From 6a4b58707903cb0901966ac8dad5d6ec7f2d432f Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 27 Oct 2008 15:10:14 +0000 Subject: uwb: target reservations shouldn't get streams The reservation owner should decide the stream index to use based on what reservations it's created. Signed-off-by: David Vrabel --- drivers/uwb/rsv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/rsv.c b/drivers/uwb/rsv.c index bae16204576..e4facae46e0 100644 --- a/drivers/uwb/rsv.c +++ b/drivers/uwb/rsv.c @@ -285,7 +285,8 @@ void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state) switch (new_state) { case UWB_RSV_STATE_NONE: uwb_drp_avail_release(rsv->rc, &rsv->mas); - uwb_rsv_put_stream(rsv); + if (uwb_rsv_is_owner(rsv)) + uwb_rsv_put_stream(rsv); uwb_rsv_state_update(rsv, UWB_RSV_STATE_NONE); uwb_rsv_callback(rsv); break; @@ -532,7 +533,6 @@ static struct uwb_rsv *uwb_rsv_new_target(struct uwb_rc *rc, rsv->target.dev = &rc->uwb_dev; rsv->type = uwb_ie_drp_type(drp_ie); rsv->stream = uwb_ie_drp_stream_index(drp_ie); - set_bit(rsv->stream, rsv->owner->streams); uwb_drp_ie_to_bm(&rsv->mas, drp_ie); /* -- cgit v1.2.3 From cae1c11414912bf77a62aebd65ced321f0b9da51 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 27 Oct 2008 15:22:46 +0000 Subject: uwb: reference count reservations Reference counting the struct uwb_rsv's is safer and easier to get right than the transferring ownership of the structures from the PAL to reservation manager. This fixes an oops in the debug PAL after a reservation timed out. Signed-off-by: David Vrabel --- drivers/uwb/rsv.c | 48 ++++++++++++++++++++++++++++++++---------------- drivers/uwb/uwb-debug.c | 13 ++++++++++--- 2 files changed, 42 insertions(+), 19 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/rsv.c b/drivers/uwb/rsv.c index e4facae46e0..bcc41a4a660 100644 --- a/drivers/uwb/rsv.c +++ b/drivers/uwb/rsv.c @@ -82,6 +82,23 @@ static void uwb_rsv_dump(struct uwb_rsv *rsv) dev_dbg(dev, "rsv %s -> %s: %s\n", owner, target, uwb_rsv_state_str(rsv->state)); } +static void uwb_rsv_release(struct kref *kref) +{ + struct uwb_rsv *rsv = container_of(kref, struct uwb_rsv, kref); + + kfree(rsv); +} + +static void uwb_rsv_get(struct uwb_rsv *rsv) +{ + kref_get(&rsv->kref); +} + +static void uwb_rsv_put(struct uwb_rsv *rsv) +{ + kref_put(&rsv->kref, uwb_rsv_release); +} + /* * Get a free stream index for a reservation. * @@ -325,6 +342,7 @@ static struct uwb_rsv *uwb_rsv_alloc(struct uwb_rc *rc) INIT_LIST_HEAD(&rsv->rc_node); INIT_LIST_HEAD(&rsv->pal_node); + kref_init(&rsv->kref); init_timer(&rsv->timer); rsv->timer.function = uwb_rsv_timer; rsv->timer.data = (unsigned long)rsv; @@ -334,14 +352,6 @@ static struct uwb_rsv *uwb_rsv_alloc(struct uwb_rc *rc) return rsv; } -static void uwb_rsv_free(struct uwb_rsv *rsv) -{ - uwb_dev_put(rsv->owner); - if (rsv->target.type == UWB_RSV_TARGET_DEV) - uwb_dev_put(rsv->target.dev); - kfree(rsv); -} - /** * uwb_rsv_create - allocate and initialize a UWB reservation structure * @rc: the radio controller @@ -375,23 +385,23 @@ void uwb_rsv_remove(struct uwb_rsv *rsv) if (rsv->state != UWB_RSV_STATE_NONE) uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE); del_timer_sync(&rsv->timer); - list_del(&rsv->rc_node); - uwb_rsv_free(rsv); + uwb_dev_put(rsv->owner); + if (rsv->target.type == UWB_RSV_TARGET_DEV) + uwb_dev_put(rsv->target.dev); + + list_del_init(&rsv->rc_node); + uwb_rsv_put(rsv); } /** * uwb_rsv_destroy - free a UWB reservation structure * @rsv: the reservation to free * - * The reservation will be terminated if it is pending or established. + * The reservation must already be terminated. */ void uwb_rsv_destroy(struct uwb_rsv *rsv) { - struct uwb_rc *rc = rsv->rc; - - mutex_lock(&rc->rsvs_mutex); - uwb_rsv_remove(rsv); - mutex_unlock(&rc->rsvs_mutex); + uwb_rsv_put(rsv); } EXPORT_SYMBOL_GPL(uwb_rsv_destroy); @@ -423,6 +433,7 @@ int uwb_rsv_establish(struct uwb_rsv *rsv) goto out; } + uwb_rsv_get(rsv); list_add_tail(&rsv->rc_node, &rc->reservations); rsv->owner = &rc->uwb_dev; uwb_dev_get(rsv->owner); @@ -478,9 +489,14 @@ EXPORT_SYMBOL_GPL(uwb_rsv_terminate); * * Reservation requests from peers are denied unless a PAL accepts it * by calling this function. + * + * The PAL call uwb_rsv_destroy() for all accepted reservations before + * calling uwb_pal_unregister(). */ void uwb_rsv_accept(struct uwb_rsv *rsv, uwb_rsv_cb_f cb, void *pal_priv) { + uwb_rsv_get(rsv); + rsv->callback = cb; rsv->pal_priv = pal_priv; rsv->state = UWB_RSV_STATE_T_ACCEPTED; diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c index 6d232c35d07..6db641e4531 100644 --- a/drivers/uwb/uwb-debug.c +++ b/drivers/uwb/uwb-debug.c @@ -104,6 +104,11 @@ static void uwb_dbg_rsv_cb(struct uwb_rsv *rsv) dev_dbg(dev, "debug: rsv %s -> %s: %s\n", owner, target, uwb_rsv_state_str(rsv->state)); + + if (rsv->state == UWB_RSV_STATE_NONE) { + list_del(&rsv->pal_node); + uwb_rsv_destroy(rsv); + } } static int cmd_rsv_establish(struct uwb_rc *rc, @@ -153,11 +158,11 @@ static int cmd_rsv_terminate(struct uwb_rc *rc, found = rsv; break; } + i++; } if (!found) return -EINVAL; - list_del(&found->pal_node); uwb_rsv_terminate(found); return 0; @@ -287,8 +292,10 @@ static void uwb_dbg_new_rsv(struct uwb_rsv *rsv) { struct uwb_rc *rc = rsv->rc; - if (rc->dbg->accept) + if (rc->dbg->accept) { + list_add_tail(&rsv->pal_node, &rc->dbg->rsvs); uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, NULL); + } } /** @@ -336,7 +343,7 @@ void uwb_dbg_del_rc(struct uwb_rc *rc) return; list_for_each_entry_safe(rsv, t, &rc->dbg->rsvs, pal_node) { - uwb_rsv_destroy(rsv); + uwb_rsv_terminate(rsv); } uwb_pal_unregister(rc, &rc->dbg->pal); -- cgit v1.2.3 From 1cde7f68ced8d10a20dd2370e9d1d22ab3c1ea5c Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 27 Oct 2008 16:48:09 +0000 Subject: uwb: order IEs by element ID ECMA-368 requires that IEs in a beacon must be sorted by element ID. Most hardware uses the ordering in the Set IE URC command so get the ordering right on the host. Also refactor the IE management code: - use uwb_ie_next() instead of uwb_ie_for_each(). - remove unnecessary functions. - API is now only uwb_rc_ie_add() and uwb_rc_ie_rm(). Signed-off-by: David Vrabel --- drivers/uwb/beacon.c | 24 +-- drivers/uwb/ie.c | 463 +++++++++++++---------------------------- drivers/uwb/lc-rc.c | 25 --- drivers/uwb/uwb-internal.h | 16 +- drivers/uwb/wlp/wlp-internal.h | 4 - 5 files changed, 170 insertions(+), 362 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/beacon.c b/drivers/uwb/beacon.c index 46b18eec502..ad823987ced 100644 --- a/drivers/uwb/beacon.c +++ b/drivers/uwb/beacon.c @@ -349,22 +349,22 @@ ssize_t uwb_bce_print_IEs(struct uwb_dev *uwb_dev, struct uwb_beca_e *bce, ssize_t result = 0; struct uwb_rc_evt_beacon *be; struct uwb_beacon_frame *bf; - struct uwb_buf_ctx ctx = { - .buf = buf, - .bytes = 0, - .size = size - }; + int ies_len; + struct uwb_ie_hdr *ies; mutex_lock(&bce->mutex); + be = bce->be; - if (be == NULL) - goto out; - bf = (void *) be->BeaconInfo; - uwb_ie_for_each(uwb_dev, uwb_ie_dump_hex, &ctx, - bf->IEData, be->wBeaconInfoLength - sizeof(*bf)); - result = ctx.bytes; -out: + if (be) { + bf = (struct uwb_beacon_frame *)bce->be->BeaconInfo; + ies_len = be->wBeaconInfoLength - sizeof(struct uwb_beacon_frame); + ies = (struct uwb_ie_hdr *)bf->IEData; + + result = uwb_ie_dump_hex(ies, ies_len, buf, size); + } + mutex_unlock(&bce->mutex); + return result; } diff --git a/drivers/uwb/ie.c b/drivers/uwb/ie.c index cf6f3d152b9..ab976686175 100644 --- a/drivers/uwb/ie.c +++ b/drivers/uwb/ie.c @@ -25,8 +25,6 @@ */ #include "uwb-internal.h" -#define D_LOCAL 0 -#include /** * uwb_ie_next - get the next IE in a buffer @@ -60,6 +58,42 @@ struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len) } EXPORT_SYMBOL_GPL(uwb_ie_next); +/** + * uwb_ie_dump_hex - print IEs to a character buffer + * @ies: the IEs to print. + * @len: length of all the IEs. + * @buf: the destination buffer. + * @size: size of @buf. + * + * Returns the number of characters written. + */ +int uwb_ie_dump_hex(const struct uwb_ie_hdr *ies, size_t len, + char *buf, size_t size) +{ + void *ptr; + const struct uwb_ie_hdr *ie; + int r = 0; + u8 *d; + + ptr = (void *)ies; + for (;;) { + ie = uwb_ie_next(&ptr, &len); + if (!ie) + break; + + r += scnprintf(buf + r, size - r, "%02x %02x", + (unsigned)ie->element_id, + (unsigned)ie->length); + d = (uint8_t *)ie + sizeof(struct uwb_ie_hdr); + while (d != ptr && r < size) + r += scnprintf(buf + r, size - r, " %02x", (unsigned)*d++); + if (r < size) + buf[r++] = '\n'; + }; + + return r; +} + /** * Get the IEs that a radio controller is sending in its beacon * @@ -70,6 +104,7 @@ EXPORT_SYMBOL_GPL(uwb_ie_next); * anything. Once done with the iedata buffer, call * uwb_rc_ie_release(iedata). Don't call kfree on it. */ +static ssize_t uwb_rc_get_ie(struct uwb_rc *uwb_rc, struct uwb_rc_evt_get_ie **pget_ie) { ssize_t result; @@ -78,148 +113,35 @@ ssize_t uwb_rc_get_ie(struct uwb_rc *uwb_rc, struct uwb_rc_evt_get_ie **pget_ie) struct uwb_rceb *reply = NULL; struct uwb_rc_evt_get_ie *get_ie; - d_fnstart(3, dev, "(%p, %p)\n", uwb_rc, pget_ie); - result = -ENOMEM; cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (cmd == NULL) - goto error_kzalloc; + return -ENOMEM; + cmd->bCommandType = UWB_RC_CET_GENERAL; cmd->wCommand = cpu_to_le16(UWB_RC_CMD_GET_IE); result = uwb_rc_vcmd(uwb_rc, "GET_IE", cmd, sizeof(*cmd), UWB_RC_CET_GENERAL, UWB_RC_CMD_GET_IE, &reply); + kfree(cmd); if (result < 0) - goto error_cmd; + return result; + get_ie = container_of(reply, struct uwb_rc_evt_get_ie, rceb); if (result < sizeof(*get_ie)) { dev_err(dev, "not enough data returned for decoding GET IE " "(%zu bytes received vs %zu needed)\n", result, sizeof(*get_ie)); - result = -EINVAL; + return -EINVAL; } else if (result < sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength)) { dev_err(dev, "not enough data returned for decoding GET IE " "payload (%zu bytes received vs %zu needed)\n", result, sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength)); - result = -EINVAL; - } else - *pget_ie = get_ie; -error_cmd: - kfree(cmd); -error_kzalloc: - d_fnend(3, dev, "(%p, %p) = %d\n", uwb_rc, pget_ie, (int)result); - return result; -} -EXPORT_SYMBOL_GPL(uwb_rc_get_ie); - - -/* - * Given a pointer to an IE, print it in ASCII/hex followed by a new line - * - * @ie_hdr: pointer to the IE header. Length is in there, and it is - * guaranteed that the ie_hdr->length bytes following it are - * safely accesible. - * - * @_data: context data passed from uwb_ie_for_each(), an struct output_ctx - */ -int uwb_ie_dump_hex(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr, - size_t offset, void *_ctx) -{ - struct uwb_buf_ctx *ctx = _ctx; - const u8 *pl = (void *)(ie_hdr + 1); - u8 pl_itr; - - ctx->bytes += scnprintf(ctx->buf + ctx->bytes, ctx->size - ctx->bytes, - "%02x %02x ", (unsigned) ie_hdr->element_id, - (unsigned) ie_hdr->length); - pl_itr = 0; - while (pl_itr < ie_hdr->length && ctx->bytes < ctx->size) - ctx->bytes += scnprintf(ctx->buf + ctx->bytes, - ctx->size - ctx->bytes, - "%02x ", (unsigned) pl[pl_itr++]); - if (ctx->bytes < ctx->size) - ctx->buf[ctx->bytes++] = '\n'; - return 0; -} -EXPORT_SYMBOL_GPL(uwb_ie_dump_hex); - - -/** - * Verify that a pointer in a buffer points to valid IE - * - * @start: pointer to start of buffer in which IE appears - * @itr: pointer to IE inside buffer that will be verified - * @top: pointer to end of buffer - * - * @returns: 0 if IE is valid, <0 otherwise - * - * Verification involves checking that the buffer can contain a - * header and the amount of data reported in the IE header can be found in - * the buffer. - */ -static -int uwb_rc_ie_verify(struct uwb_dev *uwb_dev, const void *start, - const void *itr, const void *top) -{ - struct device *dev = &uwb_dev->dev; - const struct uwb_ie_hdr *ie_hdr; - - if (top - itr < sizeof(*ie_hdr)) { - dev_err(dev, "Bad IE: no data to decode header " - "(%zu bytes left vs %zu needed) at offset %zu\n", - top - itr, sizeof(*ie_hdr), itr - start); - return -EINVAL; - } - ie_hdr = itr; - itr += sizeof(*ie_hdr); - if (top - itr < ie_hdr->length) { - dev_err(dev, "Bad IE: not enough data for payload " - "(%zu bytes left vs %zu needed) at offset %zu\n", - top - itr, (size_t)ie_hdr->length, - (void *)ie_hdr - start); return -EINVAL; } - return 0; -} - -/** - * Walk a buffer filled with consecutive IE's a buffer - * - * @uwb_dev: UWB device this IEs belong to (for err messages mainly) - * - * @fn: function to call with each IE; if it returns 0, we keep - * traversing the buffer. If it returns !0, we'll stop and return - * that value. - * - * @data: pointer passed to @fn - * - * @buf: buffer where the consecutive IEs are located - * - * @size: size of @buf - * - * Each IE is checked for basic correctness (there is space left for - * the header and the payload). If that test is failed, we stop - * processing. For every good IE, @fn is called. - */ -ssize_t uwb_ie_for_each(struct uwb_dev *uwb_dev, uwb_ie_f fn, void *data, - const void *buf, size_t size) -{ - ssize_t result = 0; - const struct uwb_ie_hdr *ie_hdr; - const void *itr = buf, *top = itr + size; - - while (itr < top) { - if (uwb_rc_ie_verify(uwb_dev, buf, itr, top) != 0) - break; - ie_hdr = itr; - itr += sizeof(*ie_hdr) + ie_hdr->length; - result = fn(uwb_dev, ie_hdr, itr - buf, data); - if (result != 0) - break; - } + *pget_ie = get_ie; return result; } -EXPORT_SYMBOL_GPL(uwb_ie_for_each); /** @@ -256,70 +178,6 @@ error_cmd: return result; } -/** - * Determine by IE id if IE is host settable - * WUSB 1.0 [8.6.2.8 Table 8.85] - * - * EXCEPTION: - * All but UWB_IE_WLP appears in Table 8.85 from WUSB 1.0. Setting this IE - * is required for the WLP substack to perform association with its WSS so - * we hope that the WUSB spec will be changed to reflect this. - */ -static -int uwb_rc_ie_is_host_settable(enum uwb_ie element_id) -{ - if (element_id == UWB_PCA_AVAILABILITY || - element_id == UWB_BP_SWITCH_IE || - element_id == UWB_MAC_CAPABILITIES_IE || - element_id == UWB_PHY_CAPABILITIES_IE || - element_id == UWB_APP_SPEC_PROBE_IE || - element_id == UWB_IDENTIFICATION_IE || - element_id == UWB_MASTER_KEY_ID_IE || - element_id == UWB_IE_WLP || - element_id == UWB_APP_SPEC_IE) - return 1; - return 0; -} - - -/** - * Extract Host Settable IEs from IE - * - * @ie_data: pointer to buffer containing all IEs - * @size: size of buffer - * - * @returns: length of buffer that only includes host settable IEs - * - * Given a buffer of IEs we move all Host Settable IEs to front of buffer - * by overwriting the IEs that are not Host Settable. - * Buffer length is adjusted accordingly. - */ -static -ssize_t uwb_rc_parse_host_settable_ie(struct uwb_dev *uwb_dev, - void *ie_data, size_t size) -{ - size_t new_len = size; - struct uwb_ie_hdr *ie_hdr; - size_t ie_length; - void *itr = ie_data, *top = itr + size; - - while (itr < top) { - if (uwb_rc_ie_verify(uwb_dev, ie_data, itr, top) != 0) - break; - ie_hdr = itr; - ie_length = sizeof(*ie_hdr) + ie_hdr->length; - if (uwb_rc_ie_is_host_settable(ie_hdr->element_id)) { - itr += ie_length; - } else { - memmove(itr, itr + ie_length, top - (itr + ie_length)); - new_len -= ie_length; - top -= ie_length; - } - } - return new_len; -} - - /* Cleanup the whole IE management subsystem */ void uwb_rc_ie_init(struct uwb_rc *uwb_rc) { @@ -328,49 +186,34 @@ void uwb_rc_ie_init(struct uwb_rc *uwb_rc) /** - * Set up cache for host settable IEs currently being transmitted + * uwb_rc_ie_setup - setup a radio controller's IE manager + * @uwb_rc: the radio controller. * - * First we just call GET-IE to get the current IEs being transmitted - * (or we workaround and pretend we did) and (because the format is - * the same) reuse that as the IE cache (with the command prefix, as - * explained in 'struct uwb_rc'). + * The current set of IEs are obtained from the hardware with a GET-IE + * command (since the radio controller is not yet beaconing this will + * be just the hardware's MAC and PHY Capability IEs). * - * @returns: size of cache created + * Returns 0 on success; -ve on an error. */ -ssize_t uwb_rc_ie_setup(struct uwb_rc *uwb_rc) +int uwb_rc_ie_setup(struct uwb_rc *uwb_rc) { - struct device *dev = &uwb_rc->uwb_dev.dev; - ssize_t result; - size_t capacity; - struct uwb_rc_evt_get_ie *ie_info; + struct uwb_rc_evt_get_ie *ie_info = NULL; + int capacity; + + capacity = uwb_rc_get_ie(uwb_rc, &ie_info); + if (capacity < 0) + return capacity; - d_fnstart(3, dev, "(%p)\n", uwb_rc); mutex_lock(&uwb_rc->ies_mutex); - result = uwb_rc_get_ie(uwb_rc, &ie_info); - if (result < 0) - goto error_get_ie; - capacity = result; - d_printf(5, dev, "Got IEs %zu bytes (%zu long at %p)\n", result, - (size_t)le16_to_cpu(ie_info->wIELength), ie_info); - - /* Remove IEs that host should not set. */ - result = uwb_rc_parse_host_settable_ie(&uwb_rc->uwb_dev, - ie_info->IEData, le16_to_cpu(ie_info->wIELength)); - if (result < 0) - goto error_parse; - d_printf(5, dev, "purged non-settable IEs to %zu bytes\n", result); - uwb_rc->ies = (void *) ie_info; + + uwb_rc->ies = (struct uwb_rc_cmd_set_ie *)ie_info; uwb_rc->ies->rccb.bCommandType = UWB_RC_CET_GENERAL; uwb_rc->ies->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_SET_IE); uwb_rc->ies_capacity = capacity; - d_printf(5, dev, "IE cache at %p %zu bytes, %zu capacity\n", - ie_info, result, capacity); - result = 0; -error_parse: -error_get_ie: + mutex_unlock(&uwb_rc->ies_mutex); - d_fnend(3, dev, "(%p) = %zu\n", uwb_rc, result); - return result; + + return 0; } @@ -383,26 +226,47 @@ void uwb_rc_ie_release(struct uwb_rc *uwb_rc) } -static -int __acc_size(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr, - size_t offset, void *_ctx) +static int uwb_rc_ie_add_one(struct uwb_rc *rc, const struct uwb_ie_hdr *new_ie) { - size_t *acc_size = _ctx; - *acc_size += sizeof(*ie_hdr) + ie_hdr->length; - d_printf(6, &uwb_dev->dev, "new acc size %zu\n", *acc_size); + struct uwb_rc_cmd_set_ie *new_ies; + void *ptr, *prev_ie; + struct uwb_ie_hdr *ie; + size_t length, new_ie_len, new_capacity, size, prev_size; + + length = le16_to_cpu(rc->ies->wIELength); + new_ie_len = sizeof(struct uwb_ie_hdr) + new_ie->length; + new_capacity = sizeof(struct uwb_rc_cmd_set_ie) + length + new_ie_len; + + if (new_capacity > rc->ies_capacity) { + new_ies = krealloc(rc->ies, new_capacity, GFP_KERNEL); + if (!new_ies) + return -ENOMEM; + rc->ies = new_ies; + } + + ptr = rc->ies->IEData; + size = length; + for (;;) { + prev_ie = ptr; + prev_size = size; + ie = uwb_ie_next(&ptr, &size); + if (!ie || ie->element_id > new_ie->element_id) + break; + } + + memmove(prev_ie + new_ie_len, prev_ie, prev_size); + memcpy(prev_ie, new_ie, new_ie_len); + rc->ies->wIELength = cpu_to_le16(length + new_ie_len); + return 0; } - /** - * Add a new IE to IEs currently being transmitted by device - * + * uwb_rc_ie_add - add new IEs to the radio controller's beacon + * @uwb_rc: the radio controller. * @ies: the buffer containing the new IE or IEs to be added to - * the device's beacon. The buffer will be verified for - * consistence (meaning the headers should be right) and - * consistent with the buffer size. - * @size: size of @ies (in bytes, total buffer size) - * @returns: 0 if ok, <0 errno code on error + * the device's beacon. + * @size: length of all the IEs. * * According to WHCI 0.95 [4.13.6] the driver will only receive the RCEB * after the device sent the first beacon that includes the IEs specified @@ -411,66 +275,40 @@ int __acc_size(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr, * we start beaconing. * * Setting an IE on the device will overwrite all current IEs in device. So - * we take the current IEs being transmitted by the device, append the + * we take the current IEs being transmitted by the device, insert the * new one, and call SET IE with all the IEs needed. * - * The local IE cache will only be updated with the new IE if SET IE - * completed successfully. + * Returns 0 on success; or -ENOMEM. */ int uwb_rc_ie_add(struct uwb_rc *uwb_rc, const struct uwb_ie_hdr *ies, size_t size) { int result = 0; - struct device *dev = &uwb_rc->uwb_dev.dev; - struct uwb_rc_cmd_set_ie *new_ies; - size_t ies_size, total_size, acc_size = 0; - - if (uwb_rc->ies == NULL) - return -ESHUTDOWN; - uwb_ie_for_each(&uwb_rc->uwb_dev, __acc_size, &acc_size, ies, size); - if (acc_size != size) { - dev_err(dev, "BUG: bad IEs, misconstructed headers " - "[%zu bytes reported vs %zu calculated]\n", - size, acc_size); - WARN_ON(1); - return -EINVAL; - } + void *ptr; + const struct uwb_ie_hdr *ie; + mutex_lock(&uwb_rc->ies_mutex); - ies_size = le16_to_cpu(uwb_rc->ies->wIELength); - total_size = sizeof(*uwb_rc->ies) + ies_size; - if (total_size + size > uwb_rc->ies_capacity) { - d_printf(4, dev, "Reallocating IE cache from %p capacity %zu " - "to capacity %zu\n", uwb_rc->ies, uwb_rc->ies_capacity, - total_size + size); - new_ies = kzalloc(total_size + size, GFP_KERNEL); - if (new_ies == NULL) { - dev_err(dev, "No memory for adding new IE\n"); - result = -ENOMEM; - goto error_alloc; - } - memcpy(new_ies, uwb_rc->ies, total_size); - uwb_rc->ies_capacity = total_size + size; - kfree(uwb_rc->ies); - uwb_rc->ies = new_ies; - d_printf(4, dev, "New IE cache at %p capacity %zu\n", - uwb_rc->ies, uwb_rc->ies_capacity); + + ptr = (void *)ies; + for (;;) { + ie = uwb_ie_next(&ptr, &size); + if (!ie) + break; + + result = uwb_rc_ie_add_one(uwb_rc, ie); + if (result < 0) + break; } - memcpy((void *)uwb_rc->ies + total_size, ies, size); - uwb_rc->ies->wIELength = cpu_to_le16(ies_size + size); - if (uwb_rc->beaconing != -1) { - result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies); - if (result < 0) { - dev_err(dev, "Cannot set new IE on device: %d\n", - result); - uwb_rc->ies->wIELength = cpu_to_le16(ies_size); + if (result >= 0) { + if (size == 0) { + if (uwb_rc->beaconing != -1) + result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies); } else - result = 0; + result = -EINVAL; } - d_printf(4, dev, "IEs now occupy %hu bytes of %zu capacity at %p\n", - le16_to_cpu(uwb_rc->ies->wIELength), uwb_rc->ies_capacity, - uwb_rc->ies); -error_alloc: + mutex_unlock(&uwb_rc->ies_mutex); + return result; } EXPORT_SYMBOL_GPL(uwb_rc_ie_add); @@ -489,53 +327,52 @@ EXPORT_SYMBOL_GPL(uwb_rc_ie_add); * beacon. We don't reallocate, we just mark the size smaller. */ static -int uwb_rc_ie_cache_rm(struct uwb_rc *uwb_rc, enum uwb_ie to_remove) +void uwb_rc_ie_cache_rm(struct uwb_rc *uwb_rc, enum uwb_ie to_remove) { - struct uwb_ie_hdr *ie_hdr; - size_t new_len = le16_to_cpu(uwb_rc->ies->wIELength); - void *itr = uwb_rc->ies->IEData; - void *top = itr + new_len; - - while (itr < top) { - ie_hdr = itr; - if (ie_hdr->element_id != to_remove) { - itr += sizeof(*ie_hdr) + ie_hdr->length; - } else { - int ie_length; - ie_length = sizeof(*ie_hdr) + ie_hdr->length; - if (top - itr != ie_length) - memmove(itr, itr + ie_length, top - itr + ie_length); - top -= ie_length; - new_len -= ie_length; + struct uwb_ie_hdr *ie; + size_t len = le16_to_cpu(uwb_rc->ies->wIELength); + void *ptr; + size_t size; + + ptr = uwb_rc->ies->IEData; + size = len; + for (;;) { + ie = uwb_ie_next(&ptr, &size); + if (!ie) + break; + if (ie->element_id == to_remove) { + len -= sizeof(struct uwb_ie_hdr) + ie->length; + memmove(ie, ptr, size); + ptr = ie; } } - uwb_rc->ies->wIELength = cpu_to_le16(new_len); - return 0; + uwb_rc->ies->wIELength = cpu_to_le16(len); } /** - * Remove an IE currently being transmitted by device + * uwb_rc_ie_rm - remove an IE from the radio controller's beacon + * @uwb_rc: the radio controller. + * @element_id: the element ID of the IE to remove. * - * @element_id: id of IE to be removed from device's beacon + * Only IEs previously added with uwb_rc_ie_add() may be removed. + * + * Returns 0 on success; or -ve the SET-IE command to the radio + * controller failed. */ int uwb_rc_ie_rm(struct uwb_rc *uwb_rc, enum uwb_ie element_id) { - struct device *dev = &uwb_rc->uwb_dev.dev; - int result; + int result = 0; - if (uwb_rc->ies == NULL) - return -ESHUTDOWN; mutex_lock(&uwb_rc->ies_mutex); - result = uwb_rc_ie_cache_rm(uwb_rc, element_id); - if (result < 0) - dev_err(dev, "Cannot remove IE from cache.\n"); - if (uwb_rc->beaconing != -1) { + + uwb_rc_ie_cache_rm(uwb_rc, element_id); + + if (uwb_rc->beaconing != -1) result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies); - if (result < 0) - dev_err(dev, "Cannot set new IE on device.\n"); - } + mutex_unlock(&uwb_rc->ies_mutex); + return result; } EXPORT_SYMBOL_GPL(uwb_rc_ie_rm); diff --git a/drivers/uwb/lc-rc.c b/drivers/uwb/lc-rc.c index ee5772f00d4..1129e8767b5 100644 --- a/drivers/uwb/lc-rc.c +++ b/drivers/uwb/lc-rc.c @@ -468,28 +468,3 @@ void uwb_rc_put(struct uwb_rc *rc) __uwb_rc_put(rc); } EXPORT_SYMBOL_GPL(uwb_rc_put); - -/* - * - * - */ -ssize_t uwb_rc_print_IEs(struct uwb_rc *uwb_rc, char *buf, size_t size) -{ - ssize_t result; - struct uwb_rc_evt_get_ie *ie_info; - struct uwb_buf_ctx ctx; - - result = uwb_rc_get_ie(uwb_rc, &ie_info); - if (result < 0) - goto error_get_ie; - ctx.buf = buf; - ctx.size = size; - ctx.bytes = 0; - uwb_ie_for_each(&uwb_rc->uwb_dev, uwb_ie_dump_hex, &ctx, - ie_info->IEData, result - sizeof(*ie_info)); - result = ctx.bytes; - kfree(ie_info); -error_get_ie: - return result; -} - diff --git a/drivers/uwb/uwb-internal.h b/drivers/uwb/uwb-internal.h index 2ad307d1296..983ebc4dd8d 100644 --- a/drivers/uwb/uwb-internal.h +++ b/drivers/uwb/uwb-internal.h @@ -66,14 +66,14 @@ extern int uwb_rc_scan(struct uwb_rc *rc, unsigned channel, enum uwb_scan_type type, unsigned bpst_offset); extern int uwb_rc_send_all_drp_ie(struct uwb_rc *rc); -extern ssize_t uwb_rc_print_IEs(struct uwb_rc *rc, char *, size_t); -extern void uwb_rc_ie_init(struct uwb_rc *); -extern void uwb_rc_ie_init(struct uwb_rc *); -extern ssize_t uwb_rc_ie_setup(struct uwb_rc *); -extern void uwb_rc_ie_release(struct uwb_rc *); -extern int uwb_rc_ie_add(struct uwb_rc *, - const struct uwb_ie_hdr *, size_t); -extern int uwb_rc_ie_rm(struct uwb_rc *, enum uwb_ie); + +void uwb_rc_ie_init(struct uwb_rc *); +int uwb_rc_ie_setup(struct uwb_rc *); +void uwb_rc_ie_release(struct uwb_rc *); +int uwb_ie_dump_hex(const struct uwb_ie_hdr *ies, size_t len, + char *buf, size_t size); +int uwb_rc_set_ie(struct uwb_rc *, struct uwb_rc_cmd_set_ie *); + extern const char *uwb_rc_strerror(unsigned code); diff --git a/drivers/uwb/wlp/wlp-internal.h b/drivers/uwb/wlp/wlp-internal.h index 1c94fabfb1a..3e8d5de7c5b 100644 --- a/drivers/uwb/wlp/wlp-internal.h +++ b/drivers/uwb/wlp/wlp-internal.h @@ -42,10 +42,6 @@ enum wlp_wss_connect { extern struct kobj_type wss_ktype; extern struct attribute_group wss_attr_group; -extern int uwb_rc_ie_add(struct uwb_rc *, const struct uwb_ie_hdr *, size_t); -extern int uwb_rc_ie_rm(struct uwb_rc *, enum uwb_ie); - - /* This should be changed to a dynamic array where entries are sorted * by eth_addr and search is done in a binary form * -- cgit v1.2.3 From 7bc914942295b1ea63635b9c1e93b023bd7d3767 Mon Sep 17 00:00:00 2001 From: Huang Weiyi Date: Fri, 31 Oct 2008 22:49:54 +0800 Subject: uwb: remove unused #include The file(s) below do not use LINUX_VERSION_CODE nor KERNEL_VERSION. drivers/uwb/drp-ie.c drivers/uwb/hwa-rc.c drivers/uwb/i1480/dfu/usb.c drivers/uwb/i1480/i1480u-wlp/lc.c drivers/uwb/i1480/i1480u-wlp/sysfs.c drivers/uwb/rsv.c drivers/uwb/whc-rc.c This patch removes the said #include . Signed-off-by: Huang Weiyi Signed-off-by: David Vrabel --- drivers/uwb/drp-ie.c | 1 - drivers/uwb/hwa-rc.c | 1 - drivers/uwb/i1480/dfu/usb.c | 1 - drivers/uwb/i1480/i1480u-wlp/lc.c | 1 - drivers/uwb/i1480/i1480u-wlp/sysfs.c | 1 - drivers/uwb/rsv.c | 1 - drivers/uwb/whc-rc.c | 1 - 7 files changed, 7 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/drp-ie.c b/drivers/uwb/drp-ie.c index 882724c5f12..75491d47806 100644 --- a/drivers/uwb/drp-ie.c +++ b/drivers/uwb/drp-ie.c @@ -16,7 +16,6 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ -#include #include #include #include diff --git a/drivers/uwb/hwa-rc.c b/drivers/uwb/hwa-rc.c index 3d26fa0f8ae..18009c99577 100644 --- a/drivers/uwb/hwa-rc.c +++ b/drivers/uwb/hwa-rc.c @@ -51,7 +51,6 @@ * * */ -#include #include #include #include diff --git a/drivers/uwb/i1480/dfu/usb.c b/drivers/uwb/i1480/dfu/usb.c index 98eeeff051a..b7ea525fc06 100644 --- a/drivers/uwb/i1480/dfu/usb.c +++ b/drivers/uwb/i1480/dfu/usb.c @@ -35,7 +35,6 @@ * the functions are i1480_usb_NAME(). */ #include -#include #include #include #include diff --git a/drivers/uwb/i1480/i1480u-wlp/lc.c b/drivers/uwb/i1480/i1480u-wlp/lc.c index 737d60cd5b7..384306c11bb 100644 --- a/drivers/uwb/i1480/i1480u-wlp/lc.c +++ b/drivers/uwb/i1480/i1480u-wlp/lc.c @@ -55,7 +55,6 @@ * is being removed. * i1480u_rm() */ -#include #include #include #include diff --git a/drivers/uwb/i1480/i1480u-wlp/sysfs.c b/drivers/uwb/i1480/i1480u-wlp/sysfs.c index a1d8ca6ac93..a92a787725f 100644 --- a/drivers/uwb/i1480/i1480u-wlp/sysfs.c +++ b/drivers/uwb/i1480/i1480u-wlp/sysfs.c @@ -226,7 +226,6 @@ ssize_t wlp_tx_inflight_store(struct i1480u_tx_inflight *inflight, * (CLASS_DEVICE_ATTR or DEVICE_ATTR) and i1480u_ATTR_NAME produces a * class_device_attr_NAME or device_attr_NAME (for group registration). */ -#include #define i1480u_SHOW(name, fn, param) \ static ssize_t i1480u_show_##name(struct device *dev, \ diff --git a/drivers/uwb/rsv.c b/drivers/uwb/rsv.c index bcc41a4a660..ce0094657d3 100644 --- a/drivers/uwb/rsv.c +++ b/drivers/uwb/rsv.c @@ -15,7 +15,6 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ -#include #include #include diff --git a/drivers/uwb/whc-rc.c b/drivers/uwb/whc-rc.c index 1711deadb11..6c454eadd30 100644 --- a/drivers/uwb/whc-rc.c +++ b/drivers/uwb/whc-rc.c @@ -39,7 +39,6 @@ * them to the hw and transfer the replies/notifications back to the * UWB stack through the UWB daemon (UWBD). */ -#include #include #include #include -- cgit v1.2.3 From ae9eba0e2744f1aa15cdc97cd39277a84723ae23 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Thu, 30 Oct 2008 20:06:16 +0100 Subject: uwb: struct device - replace bus_id with dev_name(), dev_set_name() Cc: David Vrabel Acked-by: Greg Kroah-Hartman Signed-Off-By: Kay Sievers Signed-off-by: David Vrabel --- drivers/uwb/umc-dev.c | 3 +-- drivers/uwb/whci.c | 2 +- 2 files changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/umc-dev.c b/drivers/uwb/umc-dev.c index aa44e1c1a10..53207e14cd8 100644 --- a/drivers/uwb/umc-dev.c +++ b/drivers/uwb/umc-dev.c @@ -31,8 +31,7 @@ struct umc_dev *umc_device_create(struct device *parent, int n) umc = kzalloc(sizeof(struct umc_dev), GFP_KERNEL); if (umc) { - snprintf(umc->dev.bus_id, sizeof(umc->dev.bus_id), "%s-%d", - parent->bus_id, n); + dev_set_name(&umc->dev, "%s-%d", dev_name(parent), n); umc->dev.parent = parent; umc->dev.bus = &umc_bus_type; umc->dev.release = umc_device_release; diff --git a/drivers/uwb/whci.c b/drivers/uwb/whci.c index 3df2388f908..e626467f95e 100644 --- a/drivers/uwb/whci.c +++ b/drivers/uwb/whci.c @@ -111,7 +111,7 @@ static int whci_add_cap(struct whci_card *card, int n) + UWBCAPDATA_TO_OFFSET(capdata); umc->resource.end = umc->resource.start + (n == 0 ? 0x20 : UWBCAPDATA_TO_SIZE(capdata)) - 1; - umc->resource.name = umc->dev.bus_id; + umc->resource.name = dev_name(&umc->dev); umc->resource.flags = card->pci->resource[bar].flags; umc->resource.parent = &card->pci->resource[bar]; umc->irq = card->pci->irq; -- cgit v1.2.3 From c5995bd2819dc577d0b32b26be0836d16c977e24 Mon Sep 17 00:00:00 2001 From: Stefano Panella Date: Tue, 4 Nov 2008 14:06:31 +0000 Subject: uwb: infrastructure for handling Relinquish Request IEs The structures and event handler needed to handle Relinish Request IEs received from neighbors. Nothing is done with these IEs yet. Signed-off-by: Stefano Panella Signed-off-by: David Vrabel --- drivers/uwb/Makefile | 1 + drivers/uwb/ie-rcv.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++ drivers/uwb/uwb-internal.h | 1 + drivers/uwb/uwbd.c | 4 ++++ 4 files changed, 61 insertions(+) create mode 100644 drivers/uwb/ie-rcv.c (limited to 'drivers/uwb') diff --git a/drivers/uwb/Makefile b/drivers/uwb/Makefile index 257e6908304..2b99c3e6167 100644 --- a/drivers/uwb/Makefile +++ b/drivers/uwb/Makefile @@ -13,6 +13,7 @@ uwb-objs := \ drp-ie.o \ est.o \ ie.o \ + ie-rcv.o \ lc-dev.o \ lc-rc.o \ neh.o \ diff --git a/drivers/uwb/ie-rcv.c b/drivers/uwb/ie-rcv.c new file mode 100644 index 00000000000..917e6d78a79 --- /dev/null +++ b/drivers/uwb/ie-rcv.c @@ -0,0 +1,55 @@ +/* + * Ultra Wide Band + * IE Received notification handling. + * + * Copyright (C) 2008 Cambridge Silicon Radio Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include +#include +#include +#include "uwb-internal.h" + +/* + * Process an incoming IE Received notification. + */ +int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *evt) +{ + int result = -EINVAL; + struct device *dev = &evt->rc->uwb_dev.dev; + struct uwb_rc_evt_ie_rcv *iercv; + size_t iesize; + + /* Is there enough data to decode it? */ + if (evt->notif.size < sizeof(*iercv)) { + dev_err(dev, "IE Received notification: Not enough data to " + "decode (%zu vs %zu bytes needed)\n", + evt->notif.size, sizeof(*iercv)); + goto error; + } + iercv = container_of(evt->notif.rceb, struct uwb_rc_evt_ie_rcv, rceb); + iesize = le16_to_cpu(iercv->wIELength); + + dev_dbg(dev, "IE received, element ID=%d\n", iercv->IEData[0]); + + if (iercv->IEData[0] == UWB_RELINQUISH_REQUEST_IE) { + dev_warn(dev, "unhandled Relinquish Request IE\n"); + } + + return 0; +error: + return result; +} diff --git a/drivers/uwb/uwb-internal.h b/drivers/uwb/uwb-internal.h index 983ebc4dd8d..031e8a88568 100644 --- a/drivers/uwb/uwb-internal.h +++ b/drivers/uwb/uwb-internal.h @@ -167,6 +167,7 @@ extern void uwbd_event_queue(struct uwb_event *); void uwbd_flush(struct uwb_rc *rc); /* UWB event handlers */ +extern int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *); extern int uwbd_evt_handle_rc_beacon(struct uwb_event *); extern int uwbd_evt_handle_rc_beacon_size(struct uwb_event *); extern int uwbd_evt_handle_rc_bpoie_change(struct uwb_event *); diff --git a/drivers/uwb/uwbd.c b/drivers/uwb/uwbd.c index 78908416e42..f75113571f4 100644 --- a/drivers/uwb/uwbd.c +++ b/drivers/uwb/uwbd.c @@ -104,6 +104,10 @@ struct uwbd_event { /** Table of handlers for and properties of the UWBD Radio Control Events */ static struct uwbd_event uwbd_events[] = { + [UWB_RC_EVT_IE_RCV] = { + .handler = uwbd_evt_handle_rc_ie_rcv, + .name = "IE_RECEIVED" + }, [UWB_RC_EVT_BEACON] = { .handler = uwbd_evt_handle_rc_beacon, .name = "BEACON_RECEIVED" -- cgit v1.2.3 From 6d5a681dfb583b2f1eefe7cd5505419ca2d4d6c8 Mon Sep 17 00:00:00 2001 From: Stefano Panella Date: Tue, 4 Nov 2008 14:24:57 +0000 Subject: uwb: add commands to add/remove IEs to the debug interface Add the commands UWB_DBG_CMD_IE_ADD and UWB_DBG_CMD_IE_RM to the debug interface and make them call uwb_rc_ie_add() and uwb_rc_ie_rm(). Signed-off-by: Stefano Panella Signed-off-by: David Vrabel --- drivers/uwb/uwb-debug.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c index 6db641e4531..88e6ac71381 100644 --- a/drivers/uwb/uwb-debug.c +++ b/drivers/uwb/uwb-debug.c @@ -168,6 +168,18 @@ static int cmd_rsv_terminate(struct uwb_rc *rc, return 0; } +static int cmd_ie_add(struct uwb_rc *rc, struct uwb_dbg_cmd_ie *ie_to_add) +{ + return uwb_rc_ie_add(rc, + (const struct uwb_ie_hdr *) ie_to_add->data, + ie_to_add->len); +} + +static int cmd_ie_rm(struct uwb_rc *rc, struct uwb_dbg_cmd_ie *ie_to_rm) +{ + return uwb_rc_ie_rm(rc, ie_to_rm->data[0]); +} + static int command_open(struct inode *inode, struct file *file) { file->private_data = inode->i_private; @@ -195,6 +207,12 @@ static ssize_t command_write(struct file *file, const char __user *buf, case UWB_DBG_CMD_RSV_TERMINATE: ret = cmd_rsv_terminate(rc, &cmd.rsv_terminate); break; + case UWB_DBG_CMD_IE_ADD: + ret = cmd_ie_add(rc, &cmd.ie_add); + break; + case UWB_DBG_CMD_IE_RM: + ret = cmd_ie_rm(rc, &cmd.ie_rm); + break; default: return -EINVAL; } @@ -332,7 +350,7 @@ void uwb_dbg_add_rc(struct uwb_rc *rc) } /** - * uwb_dbg_add_rc - remove a radio controller's debug interface + * uwb_dbg_del_rc - remove a radio controller's debug interface * @rc: the radio controller */ void uwb_dbg_del_rc(struct uwb_rc *rc) -- cgit v1.2.3 From fec1a5932f16c0eb1b3f5ca2e18d81d860924088 Mon Sep 17 00:00:00 2001 From: Stefano Panella Date: Tue, 4 Nov 2008 15:39:08 +0000 Subject: uwb: per-radio controller event thread and beacon cache Use an event thread per-radio controller so processing events from one radio controller doesn't delay another. A radio controller shouldn't have information on devices seen by a different radio controller (they may be on different channels) so make the beacon cache per-radio controller. Signed-off-by: Stefano Panella Signed-off-by: David Vrabel --- drivers/uwb/beacon.c | 61 ++++++++++++++--------------- drivers/uwb/driver.c | 2 - drivers/uwb/lc-rc.c | 21 ++++++---- drivers/uwb/uwb-internal.h | 20 ++-------- drivers/uwb/uwbd.c | 98 +++++++++++++++------------------------------- 5 files changed, 80 insertions(+), 122 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/beacon.c b/drivers/uwb/beacon.c index ad823987ced..d9f2a8acc59 100644 --- a/drivers/uwb/beacon.c +++ b/drivers/uwb/beacon.c @@ -168,12 +168,6 @@ out_up: * FIXME: use something faster for search than a list */ -struct uwb_beca uwb_beca = { - .list = LIST_HEAD_INIT(uwb_beca.list), - .mutex = __MUTEX_INITIALIZER(uwb_beca.mutex) -}; - - void uwb_bce_kfree(struct kref *_bce) { struct uwb_beca_e *bce = container_of(_bce, struct uwb_beca_e, refcnt); @@ -185,10 +179,11 @@ void uwb_bce_kfree(struct kref *_bce) /* Find a beacon by dev addr in the cache */ static -struct uwb_beca_e *__uwb_beca_find_bydev(const struct uwb_dev_addr *dev_addr) +struct uwb_beca_e *__uwb_beca_find_bydev(struct uwb_rc *rc, + const struct uwb_dev_addr *dev_addr) { struct uwb_beca_e *bce, *next; - list_for_each_entry_safe(bce, next, &uwb_beca.list, node) { + list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) { d_printf(6, NULL, "looking for addr %02x:%02x in %02x:%02x\n", dev_addr->data[0], dev_addr->data[1], bce->dev_addr.data[0], bce->dev_addr.data[1]); @@ -202,10 +197,11 @@ out: /* Find a beacon by dev addr in the cache */ static -struct uwb_beca_e *__uwb_beca_find_bymac(const struct uwb_mac_addr *mac_addr) +struct uwb_beca_e *__uwb_beca_find_bymac(struct uwb_rc *rc, + const struct uwb_mac_addr *mac_addr) { struct uwb_beca_e *bce, *next; - list_for_each_entry_safe(bce, next, &uwb_beca.list, node) { + list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) { if (!memcmp(bce->mac_addr, mac_addr->data, sizeof(struct uwb_mac_addr))) goto out; @@ -229,11 +225,11 @@ struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc, struct uwb_dev *found = NULL; struct uwb_beca_e *bce; - mutex_lock(&uwb_beca.mutex); - bce = __uwb_beca_find_bydev(devaddr); + mutex_lock(&rc->uwb_beca.mutex); + bce = __uwb_beca_find_bydev(rc, devaddr); if (bce) found = uwb_dev_try_get(rc, bce->uwb_dev); - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); return found; } @@ -249,11 +245,11 @@ struct uwb_dev *uwb_dev_get_by_macaddr(struct uwb_rc *rc, struct uwb_dev *found = NULL; struct uwb_beca_e *bce; - mutex_lock(&uwb_beca.mutex); - bce = __uwb_beca_find_bymac(macaddr); + mutex_lock(&rc->uwb_beca.mutex); + bce = __uwb_beca_find_bymac(rc, macaddr); if (bce) found = uwb_dev_try_get(rc, bce->uwb_dev); - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); return found; } @@ -274,7 +270,9 @@ static void uwb_beca_e_init(struct uwb_beca_e *bce) * @bf: Beacon frame (part of b, really) * @ts_jiffies: Timestamp (in jiffies) when the beacon was received */ -struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be, +static +struct uwb_beca_e *__uwb_beca_add(struct uwb_rc *rc, + struct uwb_rc_evt_beacon *be, struct uwb_beacon_frame *bf, unsigned long ts_jiffies) { @@ -286,7 +284,7 @@ struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be, uwb_beca_e_init(bce); bce->ts_jiffies = ts_jiffies; bce->uwb_dev = NULL; - list_add(&bce->node, &uwb_beca.list); + list_add(&bce->node, &rc->uwb_beca.list); return bce; } @@ -295,13 +293,13 @@ struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be, * * Remove associated devicest too. */ -void uwb_beca_purge(void) +void uwb_beca_purge(struct uwb_rc *rc) { struct uwb_beca_e *bce, *next; unsigned long expires; - mutex_lock(&uwb_beca.mutex); - list_for_each_entry_safe(bce, next, &uwb_beca.list, node) { + mutex_lock(&rc->uwb_beca.mutex); + list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) { expires = bce->ts_jiffies + msecs_to_jiffies(beacon_timeout_ms); if (time_after(jiffies, expires)) { uwbd_dev_offair(bce); @@ -309,19 +307,20 @@ void uwb_beca_purge(void) uwb_bce_put(bce); } } - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); } /* Clean up the whole beacon cache. Called on shutdown */ -void uwb_beca_release(void) +void uwb_beca_release(struct uwb_rc *rc) { struct uwb_beca_e *bce, *next; - mutex_lock(&uwb_beca.mutex); - list_for_each_entry_safe(bce, next, &uwb_beca.list, node) { + + mutex_lock(&rc->uwb_beca.mutex); + list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) { list_del(&bce->node); uwb_bce_put(bce); } - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); } static void uwb_beacon_print(struct uwb_rc *rc, struct uwb_rc_evt_beacon *be, @@ -437,18 +436,18 @@ int uwbd_evt_handle_rc_beacon(struct uwb_event *evt) if (uwb_mac_addr_bcast(&bf->Device_Identifier)) return 0; - mutex_lock(&uwb_beca.mutex); - bce = __uwb_beca_find_bymac(&bf->Device_Identifier); + mutex_lock(&rc->uwb_beca.mutex); + bce = __uwb_beca_find_bymac(rc, &bf->Device_Identifier); if (bce == NULL) { /* Not in there, a new device is pinging */ uwb_beacon_print(evt->rc, be, bf); - bce = __uwb_beca_add(be, bf, evt->ts_jiffies); + bce = __uwb_beca_add(rc, be, bf, evt->ts_jiffies); if (bce == NULL) { - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); return -ENOMEM; } } - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); mutex_lock(&bce->mutex); /* purge old beacon data */ diff --git a/drivers/uwb/driver.c b/drivers/uwb/driver.c index 521cdeb8497..f57c26580de 100644 --- a/drivers/uwb/driver.c +++ b/drivers/uwb/driver.c @@ -118,7 +118,6 @@ static int __init uwb_subsys_init(void) result = class_register(&uwb_rc_class); if (result < 0) goto error_uwb_rc_class_register; - uwbd_start(); uwb_dbg_init(); return 0; @@ -132,7 +131,6 @@ module_init(uwb_subsys_init); static void __exit uwb_subsys_exit(void) { uwb_dbg_exit(); - uwbd_stop(); class_unregister(&uwb_rc_class); uwb_est_destroy(); return; diff --git a/drivers/uwb/lc-rc.c b/drivers/uwb/lc-rc.c index 1129e8767b5..38e3d57ec8f 100644 --- a/drivers/uwb/lc-rc.c +++ b/drivers/uwb/lc-rc.c @@ -36,8 +36,6 @@ #include #include -#define D_LOCAL 1 -#include #include "uwb-internal.h" static int uwb_rc_index_match(struct device *dev, void *data) @@ -83,7 +81,6 @@ static void uwb_rc_sys_release(struct device *dev) uwb_rc_neh_destroy(rc); uwb_rc_ie_release(rc); - d_printf(1, dev, "freed uwb_rc %p\n", rc); kfree(rc); } @@ -100,6 +97,8 @@ void uwb_rc_init(struct uwb_rc *rc) rc->scan_type = UWB_SCAN_DISABLED; INIT_LIST_HEAD(&rc->notifs_chain.list); mutex_init(&rc->notifs_chain.mutex); + INIT_LIST_HEAD(&rc->uwb_beca.list); + mutex_init(&rc->uwb_beca.mutex); uwb_drp_avail_init(rc); uwb_rc_ie_init(rc); uwb_rsv_init(rc); @@ -250,6 +249,12 @@ int uwb_rc_add(struct uwb_rc *rc, struct device *parent_dev, void *priv) rc->priv = priv; + init_waitqueue_head(&rc->uwbd.wq); + INIT_LIST_HEAD(&rc->uwbd.event_list); + spin_lock_init(&rc->uwbd.event_list_lock); + + uwbd_start(rc); + result = rc->start(rc); if (result < 0) goto error_rc_start; @@ -284,7 +289,7 @@ error_sys_add: error_dev_add: error_rc_setup: rc->stop(rc); - uwbd_flush(rc); + uwbd_stop(rc); error_rc_start: return result; } @@ -315,16 +320,18 @@ void uwb_rc_rm(struct uwb_rc *rc) uwb_rc_reset(rc); rc->stop(rc); - uwbd_flush(rc); + + uwbd_stop(rc); uwb_dev_lock(&rc->uwb_dev); rc->priv = NULL; rc->cmd = NULL; uwb_dev_unlock(&rc->uwb_dev); - mutex_lock(&uwb_beca.mutex); + mutex_lock(&rc->uwb_beca.mutex); uwb_dev_for_each(rc, uwb_dev_offair_helper, NULL); __uwb_rc_sys_rm(rc); - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); + uwb_beca_release(rc); uwb_dev_rm(&rc->uwb_dev); } EXPORT_SYMBOL_GPL(uwb_rc_rm); diff --git a/drivers/uwb/uwb-internal.h b/drivers/uwb/uwb-internal.h index 031e8a88568..4c244967997 100644 --- a/drivers/uwb/uwb-internal.h +++ b/drivers/uwb/uwb-internal.h @@ -160,8 +160,8 @@ struct uwb_event { }; }; -extern void uwbd_start(void); -extern void uwbd_stop(void); +extern void uwbd_start(struct uwb_rc *rc); +extern void uwbd_stop(struct uwb_rc *rc); extern struct uwb_event *uwb_event_alloc(size_t, gfp_t gfp_mask); extern void uwbd_event_queue(struct uwb_event *); void uwbd_flush(struct uwb_rc *rc); @@ -194,15 +194,6 @@ int uwbd_evt_handle_rc_dev_addr_conflict(struct uwb_event *evt); extern unsigned long beacon_timeout_ms; -/** Beacon cache list */ -struct uwb_beca { - struct list_head list; - size_t entries; - struct mutex mutex; -}; - -extern struct uwb_beca uwb_beca; - /** * Beacon cache entry * @@ -229,9 +220,6 @@ struct uwb_beca_e { struct uwb_beacon_frame; extern ssize_t uwb_bce_print_IEs(struct uwb_dev *, struct uwb_beca_e *, char *, size_t); -extern struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *, - struct uwb_beacon_frame *, - unsigned long); extern void uwb_bce_kfree(struct kref *_bce); static inline void uwb_bce_get(struct uwb_beca_e *bce) @@ -242,8 +230,8 @@ static inline void uwb_bce_put(struct uwb_beca_e *bce) { kref_put(&bce->refcnt, uwb_bce_kfree); } -extern void uwb_beca_purge(void); -extern void uwb_beca_release(void); +extern void uwb_beca_purge(struct uwb_rc *rc); +extern void uwb_beca_release(struct uwb_rc *rc); struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc, const struct uwb_dev_addr *devaddr); diff --git a/drivers/uwb/uwbd.c b/drivers/uwb/uwbd.c index f75113571f4..ec42ce92dbc 100644 --- a/drivers/uwb/uwbd.c +++ b/drivers/uwb/uwbd.c @@ -170,8 +170,6 @@ static const struct uwbd_event uwbd_message_handlers[] = { }, }; -static DEFINE_MUTEX(uwbd_event_mutex); - /** * Handle an URC event passed to the UWB Daemon * @@ -235,19 +233,10 @@ static void uwbd_event_handle_message(struct uwb_event *evt) return; } - /* If this is a reset event we need to drop the - * uwbd_event_mutex or it deadlocks when the reset handler - * attempts to flush the uwbd events. */ - if (evt->message == UWB_EVT_MSG_RESET) - mutex_unlock(&uwbd_event_mutex); - result = uwbd_message_handlers[evt->message].handler(evt); if (result < 0) dev_err(&rc->uwb_dev.dev, "UWBD: '%s' message failed: %d\n", uwbd_message_handlers[evt->message].name, result); - - if (evt->message == UWB_EVT_MSG_RESET) - mutex_lock(&uwbd_event_mutex); } static void uwbd_event_handle(struct uwb_event *evt) @@ -275,20 +264,6 @@ static void uwbd_event_handle(struct uwb_event *evt) __uwb_rc_put(rc); /* for the __uwb_rc_get() in uwb_rc_notif_cb() */ } -/* The UWB Daemon */ - - -/** Daemon's PID: used to decide if we can queue or not */ -static int uwbd_pid; -/** Daemon's task struct for managing the kthread */ -static struct task_struct *uwbd_task; -/** Daemon's waitqueue for waiting for new events */ -static DECLARE_WAIT_QUEUE_HEAD(uwbd_wq); -/** Daemon's list of events; we queue/dequeue here */ -static struct list_head uwbd_event_list = LIST_HEAD_INIT(uwbd_event_list); -/** Daemon's list lock to protect concurent access */ -static DEFINE_SPINLOCK(uwbd_event_list_lock); - /** * UWB Daemon @@ -302,65 +277,58 @@ static DEFINE_SPINLOCK(uwbd_event_list_lock); * FIXME: should change so we don't have a 1HZ timer all the time, but * only if there are devices. */ -static int uwbd(void *unused) +static int uwbd(void *param) { + struct uwb_rc *rc = param; unsigned long flags; - struct list_head list = LIST_HEAD_INIT(list); - struct uwb_event *evt, *nxt; + struct uwb_event *evt; int should_stop = 0; + while (1) { wait_event_interruptible_timeout( - uwbd_wq, - !list_empty(&uwbd_event_list) + rc->uwbd.wq, + !list_empty(&rc->uwbd.event_list) || (should_stop = kthread_should_stop()), HZ); if (should_stop) break; try_to_freeze(); - mutex_lock(&uwbd_event_mutex); - spin_lock_irqsave(&uwbd_event_list_lock, flags); - list_splice_init(&uwbd_event_list, &list); - spin_unlock_irqrestore(&uwbd_event_list_lock, flags); - list_for_each_entry_safe(evt, nxt, &list, list_node) { + spin_lock_irqsave(&rc->uwbd.event_list_lock, flags); + if (!list_empty(&rc->uwbd.event_list)) { + evt = list_first_entry(&rc->uwbd.event_list, struct uwb_event, list_node); list_del(&evt->list_node); + } else + evt = NULL; + spin_unlock_irqrestore(&rc->uwbd.event_list_lock, flags); + + if (evt) { uwbd_event_handle(evt); kfree(evt); } - mutex_unlock(&uwbd_event_mutex); - uwb_beca_purge(); /* Purge devices that left */ + uwb_beca_purge(rc); /* Purge devices that left */ } return 0; } /** Start the UWB daemon */ -void uwbd_start(void) +void uwbd_start(struct uwb_rc *rc) { - uwbd_task = kthread_run(uwbd, NULL, "uwbd"); - if (uwbd_task == NULL) + rc->uwbd.task = kthread_run(uwbd, rc, "uwbd"); + if (rc->uwbd.task == NULL) printk(KERN_ERR "UWB: Cannot start management daemon; " "UWB won't work\n"); else - uwbd_pid = uwbd_task->pid; + rc->uwbd.pid = rc->uwbd.task->pid; } /* Stop the UWB daemon and free any unprocessed events */ -void uwbd_stop(void) +void uwbd_stop(struct uwb_rc *rc) { - unsigned long flags; - struct uwb_event *evt, *nxt; - kthread_stop(uwbd_task); - spin_lock_irqsave(&uwbd_event_list_lock, flags); - uwbd_pid = 0; - list_for_each_entry_safe(evt, nxt, &uwbd_event_list, list_node) { - if (evt->type == UWB_EVT_TYPE_NOTIF) - kfree(evt->notif.rceb); - kfree(evt); - } - spin_unlock_irqrestore(&uwbd_event_list_lock, flags); - uwb_beca_release(); + kthread_stop(rc->uwbd.task); + uwbd_flush(rc); } /* @@ -377,18 +345,20 @@ void uwbd_stop(void) */ void uwbd_event_queue(struct uwb_event *evt) { + struct uwb_rc *rc = evt->rc; unsigned long flags; - spin_lock_irqsave(&uwbd_event_list_lock, flags); - if (uwbd_pid != 0) { - list_add(&evt->list_node, &uwbd_event_list); - wake_up_all(&uwbd_wq); + + spin_lock_irqsave(&rc->uwbd.event_list_lock, flags); + if (rc->uwbd.pid != 0) { + list_add(&evt->list_node, &rc->uwbd.event_list); + wake_up_all(&rc->uwbd.wq); } else { __uwb_rc_put(evt->rc); if (evt->type == UWB_EVT_TYPE_NOTIF) kfree(evt->notif.rceb); kfree(evt); } - spin_unlock_irqrestore(&uwbd_event_list_lock, flags); + spin_unlock_irqrestore(&rc->uwbd.event_list_lock, flags); return; } @@ -396,10 +366,8 @@ void uwbd_flush(struct uwb_rc *rc) { struct uwb_event *evt, *nxt; - mutex_lock(&uwbd_event_mutex); - - spin_lock_irq(&uwbd_event_list_lock); - list_for_each_entry_safe(evt, nxt, &uwbd_event_list, list_node) { + spin_lock_irq(&rc->uwbd.event_list_lock); + list_for_each_entry_safe(evt, nxt, &rc->uwbd.event_list, list_node) { if (evt->rc == rc) { __uwb_rc_put(rc); list_del(&evt->list_node); @@ -408,7 +376,5 @@ void uwbd_flush(struct uwb_rc *rc) kfree(evt); } } - spin_unlock_irq(&uwbd_event_list_lock); - - mutex_unlock(&uwbd_event_mutex); + spin_unlock_irq(&rc->uwbd.event_list_lock); } -- cgit v1.2.3 From 307ba6dd73254fe7d2ce27db64ffd90e1bb3c6c0 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Fri, 7 Nov 2008 17:37:33 +0000 Subject: uwb: don't unbind the radio controller driver when resetting Use pre_reset and post_reset methods to avoid unbinding the radio controller driver after a uwb_rc_reset_all() call. This avoids a deadlock in uwb_rc_rm() when waiting for the uwb event thread to stop. Signed-off-by: David Vrabel --- drivers/uwb/hwa-rc.c | 22 +++++++++++++++- drivers/uwb/reset.c | 49 ++++++++++++++++++++++++++++++------ drivers/uwb/rsv.c | 29 +++++++++++++++------- drivers/uwb/umc-bus.c | 62 ++++++++++++++++++++++++++++++++-------------- drivers/uwb/uwb-internal.h | 1 + drivers/uwb/whc-rc.c | 30 ++++++++++++++++++---- 6 files changed, 151 insertions(+), 42 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/hwa-rc.c b/drivers/uwb/hwa-rc.c index 18009c99577..158e98d08af 100644 --- a/drivers/uwb/hwa-rc.c +++ b/drivers/uwb/hwa-rc.c @@ -881,6 +881,24 @@ static void hwarc_disconnect(struct usb_interface *iface) uwb_rc_put(uwb_rc); /* when creating the device, refcount = 1 */ } +static int hwarc_pre_reset(struct usb_interface *iface) +{ + struct hwarc *hwarc = usb_get_intfdata(iface); + struct uwb_rc *uwb_rc = hwarc->uwb_rc; + + uwb_rc_pre_reset(uwb_rc); + return 0; +} + +static int hwarc_post_reset(struct usb_interface *iface) +{ + struct hwarc *hwarc = usb_get_intfdata(iface); + struct uwb_rc *uwb_rc = hwarc->uwb_rc; + + uwb_rc_post_reset(uwb_rc); + return 0; +} + /** USB device ID's that we handle */ static struct usb_device_id hwarc_id_table[] = { /* D-Link DUB-1210 */ @@ -897,9 +915,11 @@ MODULE_DEVICE_TABLE(usb, hwarc_id_table); static struct usb_driver hwarc_driver = { .name = "hwa-rc", + .id_table = hwarc_id_table, .probe = hwarc_probe, .disconnect = hwarc_disconnect, - .id_table = hwarc_id_table, + .pre_reset = hwarc_pre_reset, + .post_reset = hwarc_post_reset, }; static int __init hwarc_driver_init(void) diff --git a/drivers/uwb/reset.c b/drivers/uwb/reset.c index 8de856fa795..e39b32099af 100644 --- a/drivers/uwb/reset.c +++ b/drivers/uwb/reset.c @@ -323,17 +323,16 @@ int uwbd_msg_handle_reset(struct uwb_event *evt) struct uwb_rc *rc = evt->rc; int ret; - /* Need to prevent the RC hardware module going away while in - the rc->reset() call. */ - if (!try_module_get(rc->owner)) - return 0; - dev_info(&rc->uwb_dev.dev, "resetting radio controller\n"); ret = rc->reset(rc); - if (ret) + if (ret) { dev_err(&rc->uwb_dev.dev, "failed to reset hardware: %d\n", ret); - - module_put(rc->owner); + goto error; + } + return 0; +error: + /* Nothing can be done except try the reset again. */ + uwb_rc_reset_all(rc); return ret; } @@ -360,3 +359,37 @@ void uwb_rc_reset_all(struct uwb_rc *rc) uwbd_event_queue(evt); } EXPORT_SYMBOL_GPL(uwb_rc_reset_all); + +void uwb_rc_pre_reset(struct uwb_rc *rc) +{ + rc->stop(rc); + uwbd_flush(rc); + + mutex_lock(&rc->uwb_dev.mutex); + rc->beaconing = -1; + rc->scanning = -1; + mutex_unlock(&rc->uwb_dev.mutex); + + uwb_rsv_remove_all(rc); +} +EXPORT_SYMBOL_GPL(uwb_rc_pre_reset); + +void uwb_rc_post_reset(struct uwb_rc *rc) +{ + int ret; + + ret = rc->start(rc); + if (ret) + goto error; + ret = uwb_rc_mac_addr_set(rc, &rc->uwb_dev.mac_addr); + if (ret) + goto error; + ret = uwb_rc_dev_addr_set(rc, &rc->uwb_dev.dev_addr); + if (ret) + goto error; + return; +error: + /* Nothing can be done except try the reset again. */ + uwb_rc_reset_all(rc); +} +EXPORT_SYMBOL_GPL(uwb_rc_post_reset); diff --git a/drivers/uwb/rsv.c b/drivers/uwb/rsv.c index ce0094657d3..3d76efe26ac 100644 --- a/drivers/uwb/rsv.c +++ b/drivers/uwb/rsv.c @@ -659,6 +659,25 @@ static void uwb_rsv_timer(unsigned long arg) uwb_rsv_sched_update(rsv->rc); } +/** + * uwb_rsv_remove_all - remove all reservations + * @rc: the radio controller + * + * A DRP IE update is not done. + */ +void uwb_rsv_remove_all(struct uwb_rc *rc) +{ + struct uwb_rsv *rsv, *t; + + mutex_lock(&rc->rsvs_mutex); + list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) { + uwb_rsv_remove(rsv); + } + mutex_unlock(&rc->rsvs_mutex); + + cancel_work_sync(&rc->rsv_update_work); +} + void uwb_rsv_init(struct uwb_rc *rc) { INIT_LIST_HEAD(&rc->reservations); @@ -682,14 +701,6 @@ int uwb_rsv_setup(struct uwb_rc *rc) void uwb_rsv_cleanup(struct uwb_rc *rc) { - struct uwb_rsv *rsv, *t; - - mutex_lock(&rc->rsvs_mutex); - list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) { - uwb_rsv_remove(rsv); - } - mutex_unlock(&rc->rsvs_mutex); - - cancel_work_sync(&rc->rsv_update_work); + uwb_rsv_remove_all(rc); destroy_workqueue(rc->rsv_workq); } diff --git a/drivers/uwb/umc-bus.c b/drivers/uwb/umc-bus.c index 2d8d62d9f53..5ad36164c13 100644 --- a/drivers/uwb/umc-bus.c +++ b/drivers/uwb/umc-bus.c @@ -11,23 +11,48 @@ #include #include -static int umc_bus_unbind_helper(struct device *dev, void *data) +static int umc_bus_pre_reset_helper(struct device *dev, void *data) { - struct device *parent = data; + int ret = 0; - if (dev->parent == parent && dev->driver) - device_release_driver(dev); - return 0; + if (dev->driver) { + struct umc_dev *umc = to_umc_dev(dev); + struct umc_driver *umc_drv = to_umc_driver(dev->driver); + + if (umc_drv->pre_reset) + ret = umc_drv->pre_reset(umc); + else + device_release_driver(dev); + } + return ret; +} + +static int umc_bus_post_reset_helper(struct device *dev, void *data) +{ + int ret = 0; + + if (dev->driver) { + struct umc_dev *umc = to_umc_dev(dev); + struct umc_driver *umc_drv = to_umc_driver(dev->driver); + + if (umc_drv->post_reset) + ret = umc_drv->post_reset(umc); + } else + ret = device_attach(dev); + + return ret; } /** * umc_controller_reset - reset the whole UMC controller * @umc: the UMC device for the radio controller. * - * Drivers will be unbound from all UMC devices belonging to the - * controller and then the radio controller will be rebound. The - * radio controller is expected to do a full hardware reset when it is - * probed. + * Drivers or all capabilities of the controller will have their + * pre_reset methods called or be unbound from their device. Then all + * post_reset methods will be called or the drivers will be rebound. + * + * Radio controllers must provide pre_reset and post_reset methods and + * reset the hardware in their start method. * * If this is called while a probe() or remove() is in progress it * will return -EAGAIN and not perform the reset. @@ -35,14 +60,13 @@ static int umc_bus_unbind_helper(struct device *dev, void *data) int umc_controller_reset(struct umc_dev *umc) { struct device *parent = umc->dev.parent; - int ret; + int ret = 0; - if (down_trylock(&parent->sem)) + if(down_trylock(&parent->sem)) return -EAGAIN; - bus_for_each_dev(&umc_bus_type, NULL, parent, umc_bus_unbind_helper); - ret = device_attach(&umc->dev); - if (ret == 1) - ret = 0; + ret = device_for_each_child(parent, parent, umc_bus_pre_reset_helper); + if (ret >= 0) + device_for_each_child(parent, parent, umc_bus_post_reset_helper); up(&parent->sem); return ret; @@ -75,10 +99,10 @@ static int umc_bus_rescan_helper(struct device *dev, void *data) if (!dev->driver) ret = device_attach(dev); - return ret < 0 ? ret : 0; + return ret; } -static void umc_bus_rescan(void) +static void umc_bus_rescan(struct device *parent) { int err; @@ -86,7 +110,7 @@ static void umc_bus_rescan(void) * We can't use bus_rescan_devices() here as it deadlocks when * it tries to retake the dev->parent semaphore. */ - err = bus_for_each_dev(&umc_bus_type, NULL, NULL, umc_bus_rescan_helper); + err = device_for_each_child(parent, NULL, umc_bus_rescan_helper); if (err < 0) printk(KERN_WARNING "%s: rescan of bus failed: %d\n", KBUILD_MODNAME, err); @@ -120,7 +144,7 @@ static int umc_device_probe(struct device *dev) if (err) put_device(dev); else - umc_bus_rescan(); + umc_bus_rescan(dev->parent); return err; } diff --git a/drivers/uwb/uwb-internal.h b/drivers/uwb/uwb-internal.h index 4c244967997..af95541dabc 100644 --- a/drivers/uwb/uwb-internal.h +++ b/drivers/uwb/uwb-internal.h @@ -248,6 +248,7 @@ extern struct device_attribute dev_attr_scan; void uwb_rsv_init(struct uwb_rc *rc); int uwb_rsv_setup(struct uwb_rc *rc); void uwb_rsv_cleanup(struct uwb_rc *rc); +void uwb_rsv_remove_all(struct uwb_rc *rc); void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state); void uwb_rsv_remove(struct uwb_rsv *rsv); diff --git a/drivers/uwb/whc-rc.c b/drivers/uwb/whc-rc.c index 6c454eadd30..e0d66938ccd 100644 --- a/drivers/uwb/whc-rc.c +++ b/drivers/uwb/whc-rc.c @@ -394,7 +394,7 @@ void whcrc_stop_rc(struct uwb_rc *rc) le_writel(0, whcrc->rc_base + URCCMD); whci_wait_for(&umc_dev->dev, whcrc->rc_base + URCSTS, - URCSTS_HALTED, 0, 40, "URCSTS.HALTED"); + URCSTS_HALTED, URCSTS_HALTED, 100, "URCSTS.HALTED"); } static void whcrc_init(struct whcrc *whcrc) @@ -488,6 +488,24 @@ static void whcrc_remove(struct umc_dev *umc_dev) d_printf(1, &umc_dev->dev, "freed whcrc %p\n", whcrc); } +static int whcrc_pre_reset(struct umc_dev *umc) +{ + struct whcrc *whcrc = umc_get_drvdata(umc); + struct uwb_rc *uwb_rc = whcrc->uwb_rc; + + uwb_rc_pre_reset(uwb_rc); + return 0; +} + +static int whcrc_post_reset(struct umc_dev *umc) +{ + struct whcrc *whcrc = umc_get_drvdata(umc); + struct uwb_rc *uwb_rc = whcrc->uwb_rc; + + uwb_rc_post_reset(uwb_rc); + return 0; +} + /* PCI device ID's that we handle [so it gets loaded] */ static struct pci_device_id whcrc_id_table[] = { { PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) }, @@ -496,10 +514,12 @@ static struct pci_device_id whcrc_id_table[] = { MODULE_DEVICE_TABLE(pci, whcrc_id_table); static struct umc_driver whcrc_driver = { - .name = "whc-rc", - .cap_id = UMC_CAP_ID_WHCI_RC, - .probe = whcrc_probe, - .remove = whcrc_remove, + .name = "whc-rc", + .cap_id = UMC_CAP_ID_WHCI_RC, + .probe = whcrc_probe, + .remove = whcrc_remove, + .pre_reset = whcrc_pre_reset, + .post_reset = whcrc_post_reset, }; static int __init whcrc_driver_init(void) -- cgit v1.2.3 From 58be81ed301d96045bca2b85f3b838910efcfde4 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Fri, 7 Nov 2008 18:19:19 +0000 Subject: uwb: fix races between events and neh timers Always use del_timer_sync() before freeing nehs. Destroy all nehs after stopping the radio controller and before cleaning up the reservation manager. Handle the timer running after an event has removed the neh. This fixes various oopses that may occur if a radio controller is removed while a neh timer is still active. Signed-off-by: David Vrabel --- drivers/uwb/lc-rc.c | 5 +++-- drivers/uwb/neh.c | 46 ++++++++++++++++++++++++++++++++-------------- 2 files changed, 35 insertions(+), 16 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/lc-rc.c b/drivers/uwb/lc-rc.c index 38e3d57ec8f..f00633d334d 100644 --- a/drivers/uwb/lc-rc.c +++ b/drivers/uwb/lc-rc.c @@ -79,7 +79,6 @@ static void uwb_rc_sys_release(struct device *dev) struct uwb_dev *uwb_dev = container_of(dev, struct uwb_dev, dev); struct uwb_rc *rc = container_of(uwb_dev, struct uwb_rc, uwb_dev); - uwb_rc_neh_destroy(rc); uwb_rc_ie_release(rc); kfree(rc); } @@ -311,7 +310,7 @@ void uwb_rc_rm(struct uwb_rc *rc) rc->ready = 0; uwb_dbg_del_rc(rc); - uwb_rsv_cleanup(rc); + uwb_rsv_remove_all(rc); uwb_rc_ie_rm(rc, UWB_IDENTIFICATION_IE); if (rc->beaconing >= 0) uwb_rc_beacon(rc, -1, 0); @@ -322,6 +321,7 @@ void uwb_rc_rm(struct uwb_rc *rc) rc->stop(rc); uwbd_stop(rc); + uwb_rc_neh_destroy(rc); uwb_dev_lock(&rc->uwb_dev); rc->priv = NULL; @@ -331,6 +331,7 @@ void uwb_rc_rm(struct uwb_rc *rc) uwb_dev_for_each(rc, uwb_dev_offair_helper, NULL); __uwb_rc_sys_rm(rc); mutex_unlock(&rc->uwb_beca.mutex); + uwb_rsv_cleanup(rc); uwb_beca_release(rc); uwb_dev_rm(&rc->uwb_dev); } diff --git a/drivers/uwb/neh.c b/drivers/uwb/neh.c index 9b4eb64327a..48b4ece1a62 100644 --- a/drivers/uwb/neh.c +++ b/drivers/uwb/neh.c @@ -254,7 +254,6 @@ error_kzalloc: static void __uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh) { - del_timer(&neh->timer); __uwb_rc_ctx_put(rc, neh); list_del(&neh->list_node); } @@ -275,6 +274,7 @@ void uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh) __uwb_rc_neh_rm(rc, neh); spin_unlock_irqrestore(&rc->neh_lock, flags); + del_timer_sync(&neh->timer); uwb_rc_neh_put(neh); } @@ -438,9 +438,10 @@ static void uwb_rc_neh_grok_event(struct uwb_rc *rc, struct uwb_rceb *rceb, size rceb->bEventContext, size); } else { neh = uwb_rc_neh_lookup(rc, rceb); - if (neh) + if (neh) { + del_timer_sync(&neh->timer); uwb_rc_neh_cb(neh, rceb, size); - else + } else dev_warn(dev, "event 0x%02x/%04x/%02x (%zu bytes): nobody cared\n", rceb->bEventType, le16_to_cpu(rceb->wEvent), rceb->bEventContext, size); @@ -562,16 +563,22 @@ EXPORT_SYMBOL_GPL(uwb_rc_neh_grok); */ void uwb_rc_neh_error(struct uwb_rc *rc, int error) { - struct uwb_rc_neh *neh, *next; + struct uwb_rc_neh *neh; unsigned long flags; - BUG_ON(error >= 0); - spin_lock_irqsave(&rc->neh_lock, flags); - list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) { + for (;;) { + spin_lock_irqsave(&rc->neh_lock, flags); + if (list_empty(&rc->neh_list)) { + spin_unlock_irqrestore(&rc->neh_lock, flags); + break; + } + neh = list_first_entry(&rc->neh_list, struct uwb_rc_neh, list_node); __uwb_rc_neh_rm(rc, neh); + spin_unlock_irqrestore(&rc->neh_lock, flags); + + del_timer_sync(&neh->timer); uwb_rc_neh_cb(neh, NULL, error); } - spin_unlock_irqrestore(&rc->neh_lock, flags); } EXPORT_SYMBOL_GPL(uwb_rc_neh_error); @@ -583,10 +590,14 @@ static void uwb_rc_neh_timer(unsigned long arg) unsigned long flags; spin_lock_irqsave(&rc->neh_lock, flags); - __uwb_rc_neh_rm(rc, neh); + if (neh->context) + __uwb_rc_neh_rm(rc, neh); + else + neh = NULL; spin_unlock_irqrestore(&rc->neh_lock, flags); - uwb_rc_neh_cb(neh, NULL, -ETIMEDOUT); + if (neh) + uwb_rc_neh_cb(neh, NULL, -ETIMEDOUT); } /** Initializes the @rc's neh subsystem @@ -605,12 +616,19 @@ void uwb_rc_neh_create(struct uwb_rc *rc) void uwb_rc_neh_destroy(struct uwb_rc *rc) { unsigned long flags; - struct uwb_rc_neh *neh, *next; + struct uwb_rc_neh *neh; - spin_lock_irqsave(&rc->neh_lock, flags); - list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) { + for (;;) { + spin_lock_irqsave(&rc->neh_lock, flags); + if (list_empty(&rc->neh_list)) { + spin_unlock_irqrestore(&rc->neh_lock, flags); + break; + } + neh = list_first_entry(&rc->neh_list, struct uwb_rc_neh, list_node); __uwb_rc_neh_rm(rc, neh); + spin_unlock_irqrestore(&rc->neh_lock, flags); + + del_timer_sync(&neh->timer); uwb_rc_neh_put(neh); } - spin_unlock_irqrestore(&rc->neh_lock, flags); } -- cgit v1.2.3 From e17be2b2a95b43fe0d5878adf330701bb7a77115 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 17 Nov 2008 15:24:14 +0000 Subject: uwb: add pal parameter to new reservation callback The pal parameter allows PALs to retrieve their PAL-specific data structure. Signed-off-by: David Vrabel --- drivers/uwb/rsv.c | 2 +- drivers/uwb/uwb-debug.c | 10 +++++----- 2 files changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/rsv.c b/drivers/uwb/rsv.c index 3d76efe26ac..935d5b536db 100644 --- a/drivers/uwb/rsv.c +++ b/drivers/uwb/rsv.c @@ -558,7 +558,7 @@ static struct uwb_rsv *uwb_rsv_new_target(struct uwb_rc *rc, spin_lock(&rc->pal_lock); list_for_each_entry(pal, &rc->pals, node) { if (pal->new_rsv) - pal->new_rsv(rsv); + pal->new_rsv(pal, rsv); if (rsv->state == UWB_RSV_STATE_T_ACCEPTED) break; } diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c index 88e6ac71381..217ebaac128 100644 --- a/drivers/uwb/uwb-debug.c +++ b/drivers/uwb/uwb-debug.c @@ -306,13 +306,13 @@ static struct file_operations drp_avail_fops = { .owner = THIS_MODULE, }; -static void uwb_dbg_new_rsv(struct uwb_rsv *rsv) +static void uwb_dbg_new_rsv(struct uwb_pal *pal, struct uwb_rsv *rsv) { - struct uwb_rc *rc = rsv->rc; + struct uwb_dbg *dbg = container_of(pal, struct uwb_dbg, pal); - if (rc->dbg->accept) { - list_add_tail(&rsv->pal_node, &rc->dbg->rsvs); - uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, NULL); + if (dbg->accept) { + list_add_tail(&rsv->pal_node, &dbg->rsvs); + uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, dbg); } } -- cgit v1.2.3 From 6fae35f9cea92793a98b2d9ab21235e5ae035581 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 17 Nov 2008 15:53:42 +0000 Subject: uwb: add basic radio manager The UWB radio manager coordinates the use of the radio between the PALs that may be using it. PALs request use of the radio with uwb_radio_start() and the radio manager will start beaconing if its not already doing so. When the last PAL has called uwb_radio_stop() beaconing will be stopped. In the future, the radio manager will have a more sophisticated channel selection algorithm, probably following the Channel Selection Policy from the WiMedia Alliance when it is finalized. For now, channel 9 (BG1, TFC1) is selected. The user may override the channel selected by the radio manager and may force the radio to stop beaconing. The WUSB Host Controller PAL makes use of this and there are two new debug PAL commands that can be used for testing. Signed-off-by: David Vrabel --- drivers/uwb/Makefile | 1 + drivers/uwb/beacon.c | 26 ++---- drivers/uwb/drp.c | 24 +----- drivers/uwb/lc-rc.c | 11 +-- drivers/uwb/pal.c | 20 +++-- drivers/uwb/radio.c | 202 +++++++++++++++++++++++++++++++++++++++++++++ drivers/uwb/reset.c | 6 +- drivers/uwb/rsv.c | 4 +- drivers/uwb/uwb-debug.c | 26 +++++- drivers/uwb/uwb-internal.h | 5 ++ drivers/uwb/wlp/wlp-lc.c | 5 +- 11 files changed, 261 insertions(+), 69 deletions(-) create mode 100644 drivers/uwb/radio.c (limited to 'drivers/uwb') diff --git a/drivers/uwb/Makefile b/drivers/uwb/Makefile index 2b99c3e6167..ce21a95da04 100644 --- a/drivers/uwb/Makefile +++ b/drivers/uwb/Makefile @@ -18,6 +18,7 @@ uwb-objs := \ lc-rc.o \ neh.o \ pal.o \ + radio.o \ reset.o \ rsv.o \ scan.o \ diff --git a/drivers/uwb/beacon.c b/drivers/uwb/beacon.c index d9f2a8acc59..247956098af 100644 --- a/drivers/uwb/beacon.c +++ b/drivers/uwb/beacon.c @@ -119,7 +119,6 @@ int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset) int result; struct device *dev = &rc->uwb_dev.dev; - mutex_lock(&rc->uwb_dev.mutex); if (channel < 0) channel = -1; if (channel == -1) @@ -128,7 +127,7 @@ int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset) /* channel >= 0...dah */ result = uwb_rc_start_beacon(rc, bpst_offset, channel); if (result < 0) - goto out_up; + return result; if (le16_to_cpu(rc->ies->wIELength) > 0) { result = uwb_rc_set_ie(rc, rc->ies); if (result < 0) { @@ -137,19 +136,14 @@ int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset) result = uwb_rc_stop_beacon(rc); channel = -1; bpst_offset = 0; - } else - result = 0; + } } } - if (result < 0) - goto out_up; - rc->beaconing = channel; - - uwb_notify(rc, NULL, uwb_bg_joined(rc) ? UWB_NOTIF_BG_JOIN : UWB_NOTIF_BG_LEAVE); - -out_up: - mutex_unlock(&rc->uwb_dev.mutex); + if (result >= 0) { + rc->beaconing = channel; + uwb_notify(rc, NULL, uwb_bg_joined(rc) ? UWB_NOTIF_BG_JOIN : UWB_NOTIF_BG_LEAVE); + } return result; } @@ -618,9 +612,6 @@ static ssize_t uwb_rc_beacon_show(struct device *dev, /* * Start beaconing on the specified channel, or stop beaconing. - * - * The BPST offset of when to start searching for a beacon group to - * join may be specified. */ static ssize_t uwb_rc_beacon_store(struct device *dev, struct device_attribute *attr, @@ -629,12 +620,11 @@ static ssize_t uwb_rc_beacon_store(struct device *dev, struct uwb_dev *uwb_dev = to_uwb_dev(dev); struct uwb_rc *rc = uwb_dev->rc; int channel; - unsigned bpst_offset = 0; ssize_t result = -EINVAL; - result = sscanf(buf, "%d %u\n", &channel, &bpst_offset); + result = sscanf(buf, "%d", &channel); if (result >= 1) - result = uwb_rc_beacon(rc, channel, bpst_offset); + result = uwb_radio_force_channel(rc, channel); return result < 0 ? result : size; } diff --git a/drivers/uwb/drp.c b/drivers/uwb/drp.c index c0b1e5e2bd0..fe328146adb 100644 --- a/drivers/uwb/drp.c +++ b/drivers/uwb/drp.c @@ -37,14 +37,13 @@ * * A DRP Availability IE is appended. * - * rc->uwb_dev.mutex is held + * rc->rsvs_mutex is held * * FIXME We currently ignore the returned value indicating the remaining space * in beacon. This could be used to deny reservation requests earlier if * determined that they would cause the beacon space to be exceeded. */ -static -int uwb_rc_gen_send_drp_ie(struct uwb_rc *rc) +int uwb_rc_send_all_drp_ie(struct uwb_rc *rc) { int result; struct device *dev = &rc->uwb_dev.dev; @@ -102,25 +101,6 @@ error_cmd: kfree(cmd); error: return result; - -} -/** - * Send all DRP IEs associated with this host - * - * @returns: >= 0 number of bytes still available in the beacon - * < 0 errno code on error. - * - * As per the protocol we obtain the host controller device lock to access - * bandwidth structures. - */ -int uwb_rc_send_all_drp_ie(struct uwb_rc *rc) -{ - int result; - - mutex_lock(&rc->uwb_dev.mutex); - result = uwb_rc_gen_send_drp_ie(rc); - mutex_unlock(&rc->uwb_dev.mutex); - return result; } void uwb_drp_handle_timeout(struct uwb_rsv *rsv) diff --git a/drivers/uwb/lc-rc.c b/drivers/uwb/lc-rc.c index f00633d334d..9cf21e6bb62 100644 --- a/drivers/uwb/lc-rc.c +++ b/drivers/uwb/lc-rc.c @@ -189,9 +189,9 @@ static int uwb_rc_setup(struct uwb_rc *rc) int result; struct device *dev = &rc->uwb_dev.dev; - result = uwb_rc_reset(rc); + result = uwb_radio_setup(rc); if (result < 0) { - dev_err(dev, "cannot reset UWB radio: %d\n", result); + dev_err(dev, "cannot setup UWB radio: %d\n", result); goto error; } result = uwb_rc_mac_addr_setup(rc); @@ -311,12 +311,7 @@ void uwb_rc_rm(struct uwb_rc *rc) uwb_dbg_del_rc(rc); uwb_rsv_remove_all(rc); - uwb_rc_ie_rm(rc, UWB_IDENTIFICATION_IE); - if (rc->beaconing >= 0) - uwb_rc_beacon(rc, -1, 0); - if (rc->scan_type != UWB_SCAN_DISABLED) - uwb_rc_scan(rc, rc->scanning, UWB_SCAN_DISABLED, 0); - uwb_rc_reset(rc); + uwb_radio_shutdown(rc); rc->stop(rc); diff --git a/drivers/uwb/pal.c b/drivers/uwb/pal.c index 1afb38eacb9..605765124f5 100644 --- a/drivers/uwb/pal.c +++ b/drivers/uwb/pal.c @@ -32,13 +32,13 @@ EXPORT_SYMBOL_GPL(uwb_pal_init); /** * uwb_pal_register - register a UWB PAL - * @rc: the radio controller the PAL will be using * @pal: the PAL * * The PAL must be initialized with uwb_pal_init(). */ -int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal) +int uwb_pal_register(struct uwb_pal *pal) { + struct uwb_rc *rc = pal->rc; int ret; if (pal->device) { @@ -54,9 +54,9 @@ int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal) } } - spin_lock(&rc->pal_lock); + mutex_lock(&rc->uwb_dev.mutex); list_add(&pal->node, &rc->pals); - spin_unlock(&rc->pal_lock); + mutex_unlock(&rc->uwb_dev.mutex); return 0; } @@ -64,14 +64,17 @@ EXPORT_SYMBOL_GPL(uwb_pal_register); /** * uwb_pal_register - unregister a UWB PAL - * @rc: the radio controller the PAL was using * @pal: the PAL */ -void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal) +void uwb_pal_unregister(struct uwb_pal *pal) { - spin_lock(&rc->pal_lock); + struct uwb_rc *rc = pal->rc; + + uwb_radio_stop(pal); + + mutex_lock(&rc->uwb_dev.mutex); list_del(&pal->node); - spin_unlock(&rc->pal_lock); + mutex_unlock(&rc->uwb_dev.mutex); if (pal->device) { sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name); @@ -86,6 +89,5 @@ EXPORT_SYMBOL_GPL(uwb_pal_unregister); */ void uwb_rc_pal_init(struct uwb_rc *rc) { - spin_lock_init(&rc->pal_lock); INIT_LIST_HEAD(&rc->pals); } diff --git a/drivers/uwb/radio.c b/drivers/uwb/radio.c new file mode 100644 index 00000000000..f0d55495f5e --- /dev/null +++ b/drivers/uwb/radio.c @@ -0,0 +1,202 @@ +/* + * UWB radio (channel) management. + * + * Copyright (C) 2008 Cambridge Silicon Radio Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ +#include +#include + +#include "uwb-internal.h" + + +static int uwb_radio_select_channel(struct uwb_rc *rc) +{ + /* + * Default to channel 9 (BG1, TFC1) unless the user has + * selected a specific channel or there are no active PALs. + */ + if (rc->active_pals == 0) + return -1; + if (rc->beaconing_forced) + return rc->beaconing_forced; + return 9; +} + + +/* + * Notify all active PALs that the channel has changed. + */ +static void uwb_radio_channel_changed(struct uwb_rc *rc, int channel) +{ + struct uwb_pal *pal; + + list_for_each_entry(pal, &rc->pals, node) { + if (pal->channel && channel != pal->channel) { + pal->channel = channel; + if (pal->channel_changed) + pal->channel_changed(pal, pal->channel); + } + } +} + +/* + * Change to a new channel and notify any active PALs of the new + * channel. + * + * When stopping the radio, PALs need to be notified first so they can + * terminate any active reservations. + */ +static int uwb_radio_change_channel(struct uwb_rc *rc, int channel) +{ + int ret = 0; + + if (channel == -1) + uwb_radio_channel_changed(rc, channel); + + if (channel != rc->beaconing) { + if (rc->beaconing != -1 && channel != -1) { + /* + * FIXME: should signal the channel change + * with a Channel Change IE. + */ + ret = uwb_radio_change_channel(rc, -1); + if (ret < 0) + return ret; + } + ret = uwb_rc_beacon(rc, channel, 0); + } + + if (channel != -1) + uwb_radio_channel_changed(rc, rc->beaconing); + + return ret; +} + +/** + * uwb_radio_start - request that the radio be started + * @pal: the PAL making the request. + * + * If the radio is not already active, aa suitable channel is selected + * and beacons are started. + */ +int uwb_radio_start(struct uwb_pal *pal) +{ + struct uwb_rc *rc = pal->rc; + int ret = 0; + + mutex_lock(&rc->uwb_dev.mutex); + + if (!pal->channel) { + pal->channel = -1; + rc->active_pals++; + ret = uwb_radio_change_channel(rc, uwb_radio_select_channel(rc)); + } + + mutex_unlock(&rc->uwb_dev.mutex); + return ret; +} +EXPORT_SYMBOL_GPL(uwb_radio_start); + +/** + * uwb_radio_stop - request tha the radio be stopped. + * @pal: the PAL making the request. + * + * Stops the radio if no other PAL is making use of it. + */ +void uwb_radio_stop(struct uwb_pal *pal) +{ + struct uwb_rc *rc = pal->rc; + + mutex_lock(&rc->uwb_dev.mutex); + + if (pal->channel) { + rc->active_pals--; + uwb_radio_change_channel(rc, uwb_radio_select_channel(rc)); + pal->channel = 0; + } + + mutex_unlock(&rc->uwb_dev.mutex); +} +EXPORT_SYMBOL_GPL(uwb_radio_stop); + +/* + * uwb_radio_force_channel - force a specific channel to be used + * @rc: the radio controller. + * @channel: the channel to use; -1 to force the radio to stop; 0 to + * use the default channel selection algorithm. + */ +int uwb_radio_force_channel(struct uwb_rc *rc, int channel) +{ + int ret = 0; + + mutex_lock(&rc->uwb_dev.mutex); + + rc->beaconing_forced = channel; + ret = uwb_radio_change_channel(rc, uwb_radio_select_channel(rc)); + + mutex_unlock(&rc->uwb_dev.mutex); + return ret; +} + +/* + * uwb_radio_setup - setup the radio manager + * @rc: the radio controller. + * + * The radio controller is reset to ensure it's in a known state + * before it's used. + */ +int uwb_radio_setup(struct uwb_rc *rc) +{ + return uwb_rc_reset(rc); +} + +/* + * uwb_radio_reset_state - reset any radio manager state + * @rc: the radio controller. + * + * All internal radio manager state is reset to values corresponding + * to a reset radio controller. + */ +void uwb_radio_reset_state(struct uwb_rc *rc) +{ + struct uwb_pal *pal; + + mutex_lock(&rc->uwb_dev.mutex); + + list_for_each_entry(pal, &rc->pals, node) { + if (pal->channel) { + pal->channel = -1; + if (pal->channel_changed) + pal->channel_changed(pal, -1); + } + } + + rc->beaconing = -1; + rc->scanning = -1; + + mutex_unlock(&rc->uwb_dev.mutex); +} + +/* + * uwb_radio_shutdown - shutdown the radio manager + * @rc: the radio controller. + * + * The radio controller is reset. + */ +void uwb_radio_shutdown(struct uwb_rc *rc) +{ + uwb_radio_reset_state(rc); + uwb_rc_reset(rc); +} diff --git a/drivers/uwb/reset.c b/drivers/uwb/reset.c index e39b32099af..ce8283cc809 100644 --- a/drivers/uwb/reset.c +++ b/drivers/uwb/reset.c @@ -365,11 +365,7 @@ void uwb_rc_pre_reset(struct uwb_rc *rc) rc->stop(rc); uwbd_flush(rc); - mutex_lock(&rc->uwb_dev.mutex); - rc->beaconing = -1; - rc->scanning = -1; - mutex_unlock(&rc->uwb_dev.mutex); - + uwb_radio_reset_state(rc); uwb_rsv_remove_all(rc); } EXPORT_SYMBOL_GPL(uwb_rc_pre_reset); diff --git a/drivers/uwb/rsv.c b/drivers/uwb/rsv.c index 935d5b536db..1cd84f92754 100644 --- a/drivers/uwb/rsv.c +++ b/drivers/uwb/rsv.c @@ -555,14 +555,14 @@ static struct uwb_rsv *uwb_rsv_new_target(struct uwb_rc *rc, * deny the request. */ rsv->state = UWB_RSV_STATE_T_DENIED; - spin_lock(&rc->pal_lock); + mutex_lock(&rc->uwb_dev.mutex); list_for_each_entry(pal, &rc->pals, node) { if (pal->new_rsv) pal->new_rsv(pal, rsv); if (rsv->state == UWB_RSV_STATE_T_ACCEPTED) break; } - spin_unlock(&rc->pal_lock); + mutex_unlock(&rc->uwb_dev.mutex); list_add_tail(&rsv->rc_node, &rc->reservations); state = rsv->state; diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c index 217ebaac128..0e58071a232 100644 --- a/drivers/uwb/uwb-debug.c +++ b/drivers/uwb/uwb-debug.c @@ -192,7 +192,7 @@ static ssize_t command_write(struct file *file, const char __user *buf, { struct uwb_rc *rc = file->private_data; struct uwb_dbg_cmd cmd; - int ret; + int ret = 0; if (len != sizeof(struct uwb_dbg_cmd)) return -EINVAL; @@ -213,6 +213,12 @@ static ssize_t command_write(struct file *file, const char __user *buf, case UWB_DBG_CMD_IE_RM: ret = cmd_ie_rm(rc, &cmd.ie_rm); break; + case UWB_DBG_CMD_RADIO_START: + ret = uwb_radio_start(&rc->dbg->pal); + break; + case UWB_DBG_CMD_RADIO_STOP: + uwb_radio_stop(&rc->dbg->pal); + break; default: return -EINVAL; } @@ -306,6 +312,17 @@ static struct file_operations drp_avail_fops = { .owner = THIS_MODULE, }; +static void uwb_dbg_channel_changed(struct uwb_pal *pal, int channel) +{ + struct uwb_dbg *dbg = container_of(pal, struct uwb_dbg, pal); + struct device *dev = &pal->rc->uwb_dev.dev; + + if (channel > 0) + dev_info(dev, "debug: channel %d started\n", channel); + else + dev_info(dev, "debug: channel stopped\n"); +} + static void uwb_dbg_new_rsv(struct uwb_pal *pal, struct uwb_rsv *rsv) { struct uwb_dbg *dbg = container_of(pal, struct uwb_dbg, pal); @@ -329,8 +346,11 @@ void uwb_dbg_add_rc(struct uwb_rc *rc) INIT_LIST_HEAD(&rc->dbg->rsvs); uwb_pal_init(&rc->dbg->pal); + rc->dbg->pal.rc = rc; + rc->dbg->pal.channel_changed = uwb_dbg_channel_changed; rc->dbg->pal.new_rsv = uwb_dbg_new_rsv; - uwb_pal_register(rc, &rc->dbg->pal); + uwb_pal_register(&rc->dbg->pal); + if (root_dir) { rc->dbg->root_d = debugfs_create_dir(dev_name(&rc->uwb_dev.dev), root_dir); @@ -364,7 +384,7 @@ void uwb_dbg_del_rc(struct uwb_rc *rc) uwb_rsv_terminate(rsv); } - uwb_pal_unregister(rc, &rc->dbg->pal); + uwb_pal_unregister(&rc->dbg->pal); if (root_dir) { debugfs_remove(rc->dbg->drp_avail_f); diff --git a/drivers/uwb/uwb-internal.h b/drivers/uwb/uwb-internal.h index af95541dabc..9c0cdb4ded0 100644 --- a/drivers/uwb/uwb-internal.h +++ b/drivers/uwb/uwb-internal.h @@ -238,6 +238,11 @@ struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc, struct uwb_dev *uwb_dev_get_by_macaddr(struct uwb_rc *rc, const struct uwb_mac_addr *macaddr); +int uwb_radio_setup(struct uwb_rc *rc); +void uwb_radio_reset_state(struct uwb_rc *rc); +void uwb_radio_shutdown(struct uwb_rc *rc); +int uwb_radio_force_channel(struct uwb_rc *rc, int channel); + /* -- UWB Sysfs representation */ extern struct class uwb_rc_class; extern struct device_attribute dev_attr_mac_address; diff --git a/drivers/uwb/wlp/wlp-lc.c b/drivers/uwb/wlp/wlp-lc.c index 0799402e73f..7e5eb49b03b 100644 --- a/drivers/uwb/wlp/wlp-lc.c +++ b/drivers/uwb/wlp/wlp-lc.c @@ -543,7 +543,8 @@ int wlp_setup(struct wlp *wlp, struct uwb_rc *rc) uwb_notifs_register(rc, &wlp->uwb_notifs_handler); uwb_pal_init(&wlp->pal); - result = uwb_pal_register(rc, &wlp->pal); + wlp->pal.rc = rc; + result = uwb_pal_register(&wlp->pal); if (result < 0) uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler); @@ -557,7 +558,7 @@ void wlp_remove(struct wlp *wlp) struct device *dev = &wlp->rc->uwb_dev.dev; d_fnstart(6, dev, "wlp %p\n", wlp); wlp_neighbors_release(wlp); - uwb_pal_unregister(wlp->rc, &wlp->pal); + uwb_pal_unregister(&wlp->pal); uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler); wlp_eda_release(&wlp->eda); mutex_lock(&wlp->mutex); -- cgit v1.2.3 From e8e1594c8126b1b773988fa2e3bfec76cff88336 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 17 Nov 2008 16:16:51 +0000 Subject: wlp: start/stop radio on network interface up/down Signed-off-by: David Vrabel --- drivers/uwb/i1480/i1480u-wlp/lc.c | 2 +- drivers/uwb/i1480/i1480u-wlp/netdev.c | 51 ++++++++--------------------------- drivers/uwb/uwb-debug.c | 3 --- drivers/uwb/wlp/wlp-lc.c | 14 +++++++++- 4 files changed, 25 insertions(+), 45 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/i1480/i1480u-wlp/lc.c b/drivers/uwb/i1480/i1480u-wlp/lc.c index 384306c11bb..488b2e30a0a 100644 --- a/drivers/uwb/i1480/i1480u-wlp/lc.c +++ b/drivers/uwb/i1480/i1480u-wlp/lc.c @@ -206,7 +206,7 @@ int i1480u_add(struct i1480u *i1480u, struct usb_interface *iface) wlp->fill_device_info = i1480u_fill_device_info; wlp->stop_queue = i1480u_stop_queue; wlp->start_queue = i1480u_start_queue; - result = wlp_setup(wlp, rc); + result = wlp_setup(wlp, rc, net_dev); if (result < 0) { dev_err(&iface->dev, "Cannot setup WLP\n"); goto error_wlp_setup; diff --git a/drivers/uwb/i1480/i1480u-wlp/netdev.c b/drivers/uwb/i1480/i1480u-wlp/netdev.c index 8802ac43d87..2eafb973cd0 100644 --- a/drivers/uwb/i1480/i1480u-wlp/netdev.c +++ b/drivers/uwb/i1480/i1480u-wlp/netdev.c @@ -207,6 +207,11 @@ int i1480u_open(struct net_device *net_dev) result = i1480u_rx_setup(i1480u); /* Alloc RX stuff */ if (result < 0) goto error_rx_setup; + + result = uwb_radio_start(&wlp->pal); + if (result < 0) + goto error_radio_start; + netif_wake_queue(net_dev); #ifdef i1480u_FLOW_CONTROL result = usb_submit_urb(i1480u->notif_urb, GFP_KERNEL);; @@ -215,25 +220,20 @@ int i1480u_open(struct net_device *net_dev) goto error_notif_urb_submit; } #endif - i1480u->uwb_notifs_handler.cb = i1480u_uwb_notifs_cb; - i1480u->uwb_notifs_handler.data = i1480u; - if (uwb_bg_joined(rc)) - netif_carrier_on(net_dev); - else - netif_carrier_off(net_dev); - uwb_notifs_register(rc, &i1480u->uwb_notifs_handler); /* Interface is up with an address, now we can create WSS */ result = wlp_wss_setup(net_dev, &wlp->wss); if (result < 0) { dev_err(dev, "Can't create WSS: %d. \n", result); - goto error_notif_deregister; + goto error_wss_setup; } return 0; -error_notif_deregister: - uwb_notifs_deregister(rc, &i1480u->uwb_notifs_handler); +error_wss_setup: #ifdef i1480u_FLOW_CONTROL + usb_kill_urb(i1480u->notif_urb); error_notif_urb_submit: #endif + uwb_radio_stop(&wlp->pal); +error_radio_start: netif_stop_queue(net_dev); i1480u_rx_release(i1480u); error_rx_setup: @@ -248,16 +248,15 @@ int i1480u_stop(struct net_device *net_dev) { struct i1480u *i1480u = netdev_priv(net_dev); struct wlp *wlp = &i1480u->wlp; - struct uwb_rc *rc = wlp->rc; BUG_ON(wlp->rc == NULL); wlp_wss_remove(&wlp->wss); - uwb_notifs_deregister(rc, &i1480u->uwb_notifs_handler); netif_carrier_off(net_dev); #ifdef i1480u_FLOW_CONTROL usb_kill_urb(i1480u->notif_urb); #endif netif_stop_queue(net_dev); + uwb_radio_stop(&wlp->pal); i1480u_rx_release(i1480u); i1480u_tx_release(i1480u); return 0; @@ -303,34 +302,6 @@ int i1480u_change_mtu(struct net_device *net_dev, int mtu) return 0; } - -/** - * Callback function to handle events from UWB - * When we see other devices we know the carrier is ok, - * if we are the only device in the beacon group we set the carrier - * state to off. - * */ -void i1480u_uwb_notifs_cb(void *data, struct uwb_dev *uwb_dev, - enum uwb_notifs event) -{ - struct i1480u *i1480u = data; - struct net_device *net_dev = i1480u->net_dev; - struct device *dev = &i1480u->usb_iface->dev; - switch (event) { - case UWB_NOTIF_BG_JOIN: - netif_carrier_on(net_dev); - dev_info(dev, "Link is up\n"); - break; - case UWB_NOTIF_BG_LEAVE: - netif_carrier_off(net_dev); - dev_info(dev, "Link is down\n"); - break; - default: - dev_err(dev, "don't know how to handle event %d from uwb\n", - event); - } -} - /** * Stop the network queue * diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c index 0e58071a232..e02fb83469d 100644 --- a/drivers/uwb/uwb-debug.c +++ b/drivers/uwb/uwb-debug.c @@ -33,8 +33,6 @@ #include #include -#define D_LOCAL 0 -#include #include "uwb-internal.h" @@ -314,7 +312,6 @@ static struct file_operations drp_avail_fops = { static void uwb_dbg_channel_changed(struct uwb_pal *pal, int channel) { - struct uwb_dbg *dbg = container_of(pal, struct uwb_dbg, pal); struct device *dev = &pal->rc->uwb_dev.dev; if (channel > 0) diff --git a/drivers/uwb/wlp/wlp-lc.c b/drivers/uwb/wlp/wlp-lc.c index 7e5eb49b03b..e531093c416 100644 --- a/drivers/uwb/wlp/wlp-lc.c +++ b/drivers/uwb/wlp/wlp-lc.c @@ -526,7 +526,17 @@ void wlp_uwb_notifs_cb(void *_wlp, struct uwb_dev *uwb_dev, } } -int wlp_setup(struct wlp *wlp, struct uwb_rc *rc) +static void wlp_channel_changed(struct uwb_pal *pal, int channel) +{ + struct wlp *wlp = container_of(pal, struct wlp, pal); + + if (channel < 0) + netif_carrier_off(wlp->ndev); + else + netif_carrier_on(wlp->ndev); +} + +int wlp_setup(struct wlp *wlp, struct uwb_rc *rc, struct net_device *ndev) { struct device *dev = &rc->uwb_dev.dev; int result; @@ -537,6 +547,7 @@ int wlp_setup(struct wlp *wlp, struct uwb_rc *rc) BUG_ON(wlp->stop_queue == NULL); BUG_ON(wlp->start_queue == NULL); wlp->rc = rc; + wlp->ndev = ndev; wlp_eda_init(&wlp->eda);/* Set up address cache */ wlp->uwb_notifs_handler.cb = wlp_uwb_notifs_cb; wlp->uwb_notifs_handler.data = wlp; @@ -544,6 +555,7 @@ int wlp_setup(struct wlp *wlp, struct uwb_rc *rc) uwb_pal_init(&wlp->pal); wlp->pal.rc = rc; + wlp->pal.channel_changed = wlp_channel_changed; result = uwb_pal_register(&wlp->pal); if (result < 0) uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler); -- cgit v1.2.3 From 0996e6382482ce9014787693d3884e9468153a5c Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 17 Nov 2008 16:23:22 +0000 Subject: uwb: remove unused beacon group join/leave events The UWB_NOTIF_BG_JOIN/UWB_NOTIF_BG_LEAVE events have been superceeded by the channel_changed callback in struct uwb_pal. Signed-off-by: David Vrabel --- drivers/uwb/beacon.c | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/beacon.c b/drivers/uwb/beacon.c index 247956098af..d9c60cb9499 100644 --- a/drivers/uwb/beacon.c +++ b/drivers/uwb/beacon.c @@ -140,10 +140,8 @@ int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset) } } - if (result >= 0) { + if (result >= 0) rc->beaconing = channel; - uwb_notify(rc, NULL, uwb_bg_joined(rc) ? UWB_NOTIF_BG_JOIN : UWB_NOTIF_BG_LEAVE); - } return result; } @@ -581,19 +579,6 @@ error: return result; } -/** - * uwb_bg_joined - is the RC in a beacon group? - * @rc: the radio controller - * - * Returns true if the radio controller is in a beacon group (even if - * it's the sole member). - */ -int uwb_bg_joined(struct uwb_rc *rc) -{ - return rc->beaconing != -1; -} -EXPORT_SYMBOL_GPL(uwb_bg_joined); - /* * Print beaconing state. */ -- cgit v1.2.3 From 5a4e1a795d7c5b47e94067a72db09f8cfb52bcff Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Tue, 25 Nov 2008 14:34:47 +0000 Subject: uwb: clean up whci_wait_for() timeout error message All callers of whci_wait_for() should get consistant error message if a timeout occurs. Signed-off-by: David Vrabel --- drivers/uwb/whc-rc.c | 36 ++++++------------------------------ drivers/uwb/whci.c | 4 ++-- 2 files changed, 8 insertions(+), 32 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/whc-rc.c b/drivers/uwb/whc-rc.c index e0d66938ccd..5f00386e26c 100644 --- a/drivers/uwb/whc-rc.c +++ b/drivers/uwb/whc-rc.c @@ -332,47 +332,23 @@ void whcrc_release_rc_umc(struct whcrc *whcrc) static int whcrc_start_rc(struct uwb_rc *rc) { struct whcrc *whcrc = rc->priv; - int result = 0; struct device *dev = &whcrc->umc_dev->dev; - unsigned long start, duration; /* Reset the thing */ le_writel(URCCMD_RESET, whcrc->rc_base + URCCMD); - if (d_test(3)) - start = jiffies; if (whci_wait_for(dev, whcrc->rc_base + URCCMD, URCCMD_RESET, 0, - 5000, "device to reset at init") < 0) { - result = -EBUSY; - goto error; - } else if (d_test(3)) { - duration = jiffies - start; - if (duration > msecs_to_jiffies(40)) - dev_err(dev, "Device took %ums to " - "reset. MAX expected: 40ms\n", - jiffies_to_msecs(duration)); - } + 5000, "hardware reset") < 0) + return -EBUSY; /* Set the event buffer, start the controller (enable IRQs later) */ le_writel(0, whcrc->rc_base + URCINTR); le_writel(URCCMD_RS, whcrc->rc_base + URCCMD); - result = -ETIMEDOUT; - if (d_test(3)) - start = jiffies; if (whci_wait_for(dev, whcrc->rc_base + URCSTS, URCSTS_HALTED, 0, - 5000, "device to start") < 0) - goto error; - if (d_test(3)) { - duration = jiffies - start; - if (duration > msecs_to_jiffies(40)) - dev_err(dev, "Device took %ums to start. " - "MAX expected: 40ms\n", - jiffies_to_msecs(duration)); - } + 5000, "radio controller start") < 0) + return -ETIMEDOUT; whcrc_enable_events(whcrc); - result = 0; le_writel(URCINTR_EN_ALL, whcrc->rc_base + URCINTR); -error: - return result; + return 0; } @@ -394,7 +370,7 @@ void whcrc_stop_rc(struct uwb_rc *rc) le_writel(0, whcrc->rc_base + URCCMD); whci_wait_for(&umc_dev->dev, whcrc->rc_base + URCSTS, - URCSTS_HALTED, URCSTS_HALTED, 100, "URCSTS.HALTED"); + URCSTS_HALTED, URCSTS_HALTED, 100, "radio controller stop"); } static void whcrc_init(struct whcrc *whcrc) diff --git a/drivers/uwb/whci.c b/drivers/uwb/whci.c index e626467f95e..1f8964ed988 100644 --- a/drivers/uwb/whci.c +++ b/drivers/uwb/whci.c @@ -67,11 +67,11 @@ int whci_wait_for(struct device *dev, u32 __iomem *reg, u32 mask, u32 result, val = le_readl(reg); if ((val & mask) == result) break; - msleep(10); if (t >= max_ms) { - dev_err(dev, "timed out waiting for %s ", tag); + dev_err(dev, "%s timed out\n", tag); return -ETIMEDOUT; } + msleep(10); t += 10; } return 0; -- cgit v1.2.3 From e4b49580f70380a4216ff8220c8f48a95e21c238 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Wed, 26 Nov 2008 12:47:05 +0000 Subject: uwb: fix oops in debug PAL's reservation callback Initialize pal_priv for reservations created by the debug PAL. Signed-off-by: David Vrabel --- drivers/uwb/uwb-debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c index e02fb83469d..ec1b7a403ff 100644 --- a/drivers/uwb/uwb-debug.c +++ b/drivers/uwb/uwb-debug.c @@ -122,7 +122,7 @@ static int cmd_rsv_establish(struct uwb_rc *rc, if (target == NULL) return -ENODEV; - rsv = uwb_rsv_create(rc, uwb_dbg_rsv_cb, NULL); + rsv = uwb_rsv_create(rc, uwb_dbg_rsv_cb, rc->dbg); if (rsv == NULL) { uwb_dev_put(target); return -ENOMEM; -- cgit v1.2.3 From dcc7461eef7341e84e2f7274f904ce01a43b2506 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Wed, 26 Nov 2008 13:36:59 +0000 Subject: wusb: add debug files for ASL, PZL and DI to the whci-hcd driver Add asl, pzl and di debugfs files to uwb/uwbN/wusbhc for WHCI host controller. These dump the current ASL, PZL and DI buffer. Signed-off-by: David Vrabel --- drivers/uwb/pal.c | 5 +++++ drivers/uwb/uwb-debug.c | 13 +++++++++++++ drivers/uwb/uwb-internal.h | 3 +-- 3 files changed, 19 insertions(+), 2 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/pal.c b/drivers/uwb/pal.c index 605765124f5..99a19c19909 100644 --- a/drivers/uwb/pal.c +++ b/drivers/uwb/pal.c @@ -16,6 +16,7 @@ * along with this program. If not, see . */ #include +#include #include #include "uwb-internal.h" @@ -54,6 +55,8 @@ int uwb_pal_register(struct uwb_pal *pal) } } + pal->debugfs_dir = uwb_dbg_create_pal_dir(pal); + mutex_lock(&rc->uwb_dev.mutex); list_add(&pal->node, &rc->pals); mutex_unlock(&rc->uwb_dev.mutex); @@ -76,6 +79,8 @@ void uwb_pal_unregister(struct uwb_pal *pal) list_del(&pal->node); mutex_unlock(&rc->uwb_dev.mutex); + debugfs_remove(pal->debugfs_dir); + if (pal->device) { sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name); sysfs_remove_link(&pal->device->kobj, "uwb_rc"); diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c index ec1b7a403ff..a6debb9baf3 100644 --- a/drivers/uwb/uwb-debug.c +++ b/drivers/uwb/uwb-debug.c @@ -407,3 +407,16 @@ void uwb_dbg_exit(void) { debugfs_remove(root_dir); } + +/** + * uwb_dbg_create_pal_dir - create a debugfs directory for a PAL + * @pal: The PAL. + */ +struct dentry *uwb_dbg_create_pal_dir(struct uwb_pal *pal) +{ + struct uwb_rc *rc = pal->rc; + + if (root_dir && rc->dbg && rc->dbg->root_d && pal->name) + return debugfs_create_dir(pal->name, rc->dbg->root_d); + return NULL; +} diff --git a/drivers/uwb/uwb-internal.h b/drivers/uwb/uwb-internal.h index 9c0cdb4ded0..f0f21f406bf 100644 --- a/drivers/uwb/uwb-internal.h +++ b/drivers/uwb/uwb-internal.h @@ -284,8 +284,7 @@ void uwb_dbg_init(void); void uwb_dbg_exit(void); void uwb_dbg_add_rc(struct uwb_rc *rc); void uwb_dbg_del_rc(struct uwb_rc *rc); - -/* Workarounds for version specific stuff */ +struct dentry *uwb_dbg_create_pal_dir(struct uwb_pal *pal); static inline void uwb_dev_lock(struct uwb_dev *uwb_dev) { -- cgit v1.2.3 From 5b37717a23b8e40f6cf7ad85a26ddcf41c171e2c Mon Sep 17 00:00:00 2001 From: Stefano Panella Date: Fri, 12 Dec 2008 13:00:06 +0000 Subject: uwb: improved MAS allocator and reservation conflict handling Greatly enhance the MAS allocator: - Handle row and column reservations. - Permit all the available MAS to be allocated. - Follows the WiMedia rules on MAS selection. Take appropriate action when reservation conflicts are detected. - Correctly identify which reservation wins the conflict. - Protect alien BP reservations. - If an owned reservation loses, resize/move it. - Follow the backoff procedure before requesting additional MAS. When reservations are terminated, move the remaining reservations (if necessary) so they keep following the MAS allocation rules. Signed-off-by: Stefano Panella Signed-off-by: David Vrabel --- drivers/uwb/Makefile | 1 + drivers/uwb/allocator.c | 386 +++++++++++++++++++++++++ drivers/uwb/drp-avail.c | 4 +- drivers/uwb/drp-ie.c | 160 ++++++++--- drivers/uwb/drp.c | 681 +++++++++++++++++++++++++++++++++++---------- drivers/uwb/rsv.c | 482 +++++++++++++++++++++++++------- drivers/uwb/uwb-debug.c | 49 ++-- drivers/uwb/uwb-internal.h | 80 +++++- 8 files changed, 1527 insertions(+), 316 deletions(-) create mode 100644 drivers/uwb/allocator.c (limited to 'drivers/uwb') diff --git a/drivers/uwb/Makefile b/drivers/uwb/Makefile index ce21a95da04..2f98d080fe7 100644 --- a/drivers/uwb/Makefile +++ b/drivers/uwb/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_UWB_I1480U) += i1480/ uwb-objs := \ address.o \ + allocator.o \ beacon.o \ driver.o \ drp.o \ diff --git a/drivers/uwb/allocator.c b/drivers/uwb/allocator.c new file mode 100644 index 00000000000..c8185e6b0cd --- /dev/null +++ b/drivers/uwb/allocator.c @@ -0,0 +1,386 @@ +/* + * UWB reservation management. + * + * Copyright (C) 2008 Cambridge Silicon Radio Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ +#include +#include +#include + +#include "uwb-internal.h" + +static void uwb_rsv_fill_column_alloc(struct uwb_rsv_alloc_info *ai) +{ + int col, mas, safe_mas, unsafe_mas; + unsigned char *bm = ai->bm; + struct uwb_rsv_col_info *ci = ai->ci; + unsigned char c; + + for (col = ci->csi.start_col; col < UWB_NUM_ZONES; col += ci->csi.interval) { + + safe_mas = ci->csi.safe_mas_per_col; + unsafe_mas = ci->csi.unsafe_mas_per_col; + + for (mas = 0; mas < UWB_MAS_PER_ZONE; mas++ ) { + if (bm[col * UWB_MAS_PER_ZONE + mas] == 0) { + + if (safe_mas > 0) { + safe_mas--; + c = UWB_RSV_MAS_SAFE; + } else if (unsafe_mas > 0) { + unsafe_mas--; + c = UWB_RSV_MAS_UNSAFE; + } else { + break; + } + bm[col * UWB_MAS_PER_ZONE + mas] = c; + } + } + } +} + +static void uwb_rsv_fill_row_alloc(struct uwb_rsv_alloc_info *ai) +{ + int mas, col, rows; + unsigned char *bm = ai->bm; + struct uwb_rsv_row_info *ri = &ai->ri; + unsigned char c; + + rows = 1; + c = UWB_RSV_MAS_SAFE; + for (mas = UWB_MAS_PER_ZONE - 1; mas >= 0; mas--) { + if (ri->avail[mas] == 1) { + + if (rows > ri->used_rows) { + break; + } else if (rows > 7) { + c = UWB_RSV_MAS_UNSAFE; + } + + for (col = 0; col < UWB_NUM_ZONES; col++) { + if (bm[col * UWB_NUM_ZONES + mas] != UWB_RSV_MAS_NOT_AVAIL) { + bm[col * UWB_NUM_ZONES + mas] = c; + if(c == UWB_RSV_MAS_SAFE) + ai->safe_allocated_mases++; + else + ai->unsafe_allocated_mases++; + } + } + rows++; + } + } + ai->total_allocated_mases = ai->safe_allocated_mases + ai->unsafe_allocated_mases; +} + +/* + * Find the best column set for a given availability, interval, num safe mas and + * num unsafe mas. + * + * The different sets are tried in order as shown below, depending on the interval. + * + * interval = 16 + * deep = 0 + * set 1 -> { 8 } + * deep = 1 + * set 1 -> { 4 } + * set 2 -> { 12 } + * deep = 2 + * set 1 -> { 2 } + * set 2 -> { 6 } + * set 3 -> { 10 } + * set 4 -> { 14 } + * deep = 3 + * set 1 -> { 1 } + * set 2 -> { 3 } + * set 3 -> { 5 } + * set 4 -> { 7 } + * set 5 -> { 9 } + * set 6 -> { 11 } + * set 7 -> { 13 } + * set 8 -> { 15 } + * + * interval = 8 + * deep = 0 + * set 1 -> { 4 12 } + * deep = 1 + * set 1 -> { 2 10 } + * set 2 -> { 6 14 } + * deep = 2 + * set 1 -> { 1 9 } + * set 2 -> { 3 11 } + * set 3 -> { 5 13 } + * set 4 -> { 7 15 } + * + * interval = 4 + * deep = 0 + * set 1 -> { 2 6 10 14 } + * deep = 1 + * set 1 -> { 1 5 9 13 } + * set 2 -> { 3 7 11 15 } + * + * interval = 2 + * deep = 0 + * set 1 -> { 1 3 5 7 9 11 13 15 } + */ +static int uwb_rsv_find_best_column_set(struct uwb_rsv_alloc_info *ai, int interval, + int num_safe_mas, int num_unsafe_mas) +{ + struct uwb_rsv_col_info *ci = ai->ci; + struct uwb_rsv_col_set_info *csi = &ci->csi; + struct uwb_rsv_col_set_info tmp_csi; + int deep, set, col, start_col_deep, col_start_set; + int start_col, max_mas_in_set, lowest_max_mas_in_deep; + int n_mas; + int found = UWB_RSV_ALLOC_NOT_FOUND; + + tmp_csi.start_col = 0; + start_col_deep = interval; + n_mas = num_unsafe_mas + num_safe_mas; + + for (deep = 0; ((interval >> deep) & 0x1) == 0; deep++) { + start_col_deep /= 2; + col_start_set = 0; + lowest_max_mas_in_deep = UWB_MAS_PER_ZONE; + + for (set = 1; set <= (1 << deep); set++) { + max_mas_in_set = 0; + start_col = start_col_deep + col_start_set; + for (col = start_col; col < UWB_NUM_ZONES; col += interval) { + + if (ci[col].max_avail_safe >= num_safe_mas && + ci[col].max_avail_unsafe >= n_mas) { + if (ci[col].highest_mas[n_mas] > max_mas_in_set) + max_mas_in_set = ci[col].highest_mas[n_mas]; + } else { + max_mas_in_set = 0; + break; + } + } + if ((lowest_max_mas_in_deep > max_mas_in_set) && max_mas_in_set) { + lowest_max_mas_in_deep = max_mas_in_set; + + tmp_csi.start_col = start_col; + } + col_start_set += (interval >> deep); + } + + if (lowest_max_mas_in_deep < 8) { + csi->start_col = tmp_csi.start_col; + found = UWB_RSV_ALLOC_FOUND; + break; + } else if ((lowest_max_mas_in_deep > 8) && + (lowest_max_mas_in_deep != UWB_MAS_PER_ZONE) && + (found == UWB_RSV_ALLOC_NOT_FOUND)) { + csi->start_col = tmp_csi.start_col; + found = UWB_RSV_ALLOC_FOUND; + } + } + + if (found == UWB_RSV_ALLOC_FOUND) { + csi->interval = interval; + csi->safe_mas_per_col = num_safe_mas; + csi->unsafe_mas_per_col = num_unsafe_mas; + + ai->safe_allocated_mases = (UWB_NUM_ZONES / interval) * num_safe_mas; + ai->unsafe_allocated_mases = (UWB_NUM_ZONES / interval) * num_unsafe_mas; + ai->total_allocated_mases = ai->safe_allocated_mases + ai->unsafe_allocated_mases; + ai->interval = interval; + } + return found; +} + +static void get_row_descriptors(struct uwb_rsv_alloc_info *ai) +{ + unsigned char *bm = ai->bm; + struct uwb_rsv_row_info *ri = &ai->ri; + int col, mas; + + ri->free_rows = 16; + for (mas = 0; mas < UWB_MAS_PER_ZONE; mas ++) { + ri->avail[mas] = 1; + for (col = 1; col < UWB_NUM_ZONES; col++) { + if (bm[col * UWB_NUM_ZONES + mas] == UWB_RSV_MAS_NOT_AVAIL) { + ri->free_rows--; + ri->avail[mas]=0; + break; + } + } + } +} + +static void uwb_rsv_fill_column_info(unsigned char *bm, int column, struct uwb_rsv_col_info *rci) +{ + int mas; + int block_count = 0, start_block = 0; + int previous_avail = 0; + int available = 0; + int safe_mas_in_row[UWB_MAS_PER_ZONE] = { + 8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, + }; + + rci->max_avail_safe = 0; + + for (mas = 0; mas < UWB_MAS_PER_ZONE; mas ++) { + if (!bm[column * UWB_NUM_ZONES + mas]) { + available++; + rci->max_avail_unsafe = available; + + rci->highest_mas[available] = mas; + + if (previous_avail) { + block_count++; + if ((block_count > safe_mas_in_row[start_block]) && + (!rci->max_avail_safe)) + rci->max_avail_safe = available - 1; + } else { + previous_avail = 1; + start_block = mas; + block_count = 1; + } + } else { + previous_avail = 0; + } + } + if (!rci->max_avail_safe) + rci->max_avail_safe = rci->max_avail_unsafe; +} + +static void get_column_descriptors(struct uwb_rsv_alloc_info *ai) +{ + unsigned char *bm = ai->bm; + struct uwb_rsv_col_info *ci = ai->ci; + int col; + + for (col = 1; col < UWB_NUM_ZONES; col++) { + uwb_rsv_fill_column_info(bm, col, &ci[col]); + } +} + +static int uwb_rsv_find_best_row_alloc(struct uwb_rsv_alloc_info *ai) +{ + int n_rows; + int max_rows = ai->max_mas / UWB_USABLE_MAS_PER_ROW; + int min_rows = ai->min_mas / UWB_USABLE_MAS_PER_ROW; + if (ai->min_mas % UWB_USABLE_MAS_PER_ROW) + min_rows++; + for (n_rows = max_rows; n_rows >= min_rows; n_rows--) { + if (n_rows <= ai->ri.free_rows) { + ai->ri.used_rows = n_rows; + ai->interval = 1; /* row reservation */ + uwb_rsv_fill_row_alloc(ai); + return UWB_RSV_ALLOC_FOUND; + } + } + return UWB_RSV_ALLOC_NOT_FOUND; +} + +static int uwb_rsv_find_best_col_alloc(struct uwb_rsv_alloc_info *ai, int interval) +{ + int n_safe, n_unsafe, n_mas; + int n_column = UWB_NUM_ZONES / interval; + int max_per_zone = ai->max_mas / n_column; + int min_per_zone = ai->min_mas / n_column; + + if (ai->min_mas % n_column) + min_per_zone++; + + if (min_per_zone > UWB_MAS_PER_ZONE) { + return UWB_RSV_ALLOC_NOT_FOUND; + } + + if (max_per_zone > UWB_MAS_PER_ZONE) { + max_per_zone = UWB_MAS_PER_ZONE; + } + + for (n_mas = max_per_zone; n_mas >= min_per_zone; n_mas--) { + if (uwb_rsv_find_best_column_set(ai, interval, 0, n_mas) == UWB_RSV_ALLOC_NOT_FOUND) + continue; + for (n_safe = n_mas; n_safe >= 0; n_safe--) { + n_unsafe = n_mas - n_safe; + if (uwb_rsv_find_best_column_set(ai, interval, n_safe, n_unsafe) == UWB_RSV_ALLOC_FOUND) { + uwb_rsv_fill_column_alloc(ai); + return UWB_RSV_ALLOC_FOUND; + } + } + } + return UWB_RSV_ALLOC_NOT_FOUND; +} + +int uwb_rsv_find_best_allocation(struct uwb_rsv *rsv, struct uwb_mas_bm *available, + struct uwb_mas_bm *result) +{ + struct uwb_rsv_alloc_info *ai; + int interval; + int bit_index; + + ai = kzalloc(sizeof(struct uwb_rsv_alloc_info), GFP_KERNEL); + + ai->min_mas = rsv->min_mas; + ai->max_mas = rsv->max_mas; + ai->max_interval = rsv->max_interval; + + + /* fill the not available vector from the available bm */ + for (bit_index = 0; bit_index < UWB_NUM_MAS; bit_index++) { + if (!test_bit(bit_index, available->bm)) + ai->bm[bit_index] = UWB_RSV_MAS_NOT_AVAIL; + } + + if (ai->max_interval == 1) { + get_row_descriptors(ai); + if (uwb_rsv_find_best_row_alloc(ai) == UWB_RSV_ALLOC_FOUND) + goto alloc_found; + else + goto alloc_not_found; + } + + get_column_descriptors(ai); + + for (interval = 16; interval >= 2; interval>>=1) { + if (interval > ai->max_interval) + continue; + if (uwb_rsv_find_best_col_alloc(ai, interval) == UWB_RSV_ALLOC_FOUND) + goto alloc_found; + } + + /* try row reservation if no column is found */ + get_row_descriptors(ai); + if (uwb_rsv_find_best_row_alloc(ai) == UWB_RSV_ALLOC_FOUND) + goto alloc_found; + else + goto alloc_not_found; + + alloc_found: + bitmap_zero(result->bm, UWB_NUM_MAS); + bitmap_zero(result->unsafe_bm, UWB_NUM_MAS); + /* fill the safe and unsafe bitmaps */ + for (bit_index = 0; bit_index < UWB_NUM_MAS; bit_index++) { + if (ai->bm[bit_index] == UWB_RSV_MAS_SAFE) + set_bit(bit_index, result->bm); + else if (ai->bm[bit_index] == UWB_RSV_MAS_UNSAFE) + set_bit(bit_index, result->unsafe_bm); + } + bitmap_or(result->bm, result->bm, result->unsafe_bm, UWB_NUM_MAS); + + result->safe = ai->safe_allocated_mases; + result->unsafe = ai->unsafe_allocated_mases; + + kfree(ai); + return UWB_RSV_ALLOC_FOUND; + + alloc_not_found: + kfree(ai); + return UWB_RSV_ALLOC_NOT_FOUND; +} diff --git a/drivers/uwb/drp-avail.c b/drivers/uwb/drp-avail.c index 3febd855280..40a540a5a72 100644 --- a/drivers/uwb/drp-avail.c +++ b/drivers/uwb/drp-avail.c @@ -58,7 +58,7 @@ void uwb_drp_avail_init(struct uwb_rc *rc) * * avail = global & local & pending */ -static void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail) +void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail) { bitmap_and(avail->bm, rc->drp_avail.global, rc->drp_avail.local, UWB_NUM_MAS); bitmap_and(avail->bm, avail->bm, rc->drp_avail.pending, UWB_NUM_MAS); @@ -105,6 +105,7 @@ void uwb_drp_avail_release(struct uwb_rc *rc, struct uwb_mas_bm *mas) bitmap_or(rc->drp_avail.local, rc->drp_avail.local, mas->bm, UWB_NUM_MAS); bitmap_or(rc->drp_avail.pending, rc->drp_avail.pending, mas->bm, UWB_NUM_MAS); rc->drp_avail.ie_valid = false; + uwb_rsv_handle_drp_avail_change(rc); } /** @@ -280,6 +281,7 @@ int uwbd_evt_handle_rc_drp_avail(struct uwb_event *evt) mutex_lock(&rc->rsvs_mutex); bitmap_copy(rc->drp_avail.global, bmp, UWB_NUM_MAS); rc->drp_avail.ie_valid = false; + uwb_rsv_handle_drp_avail_change(rc); mutex_unlock(&rc->rsvs_mutex); uwb_rsv_sched_update(rc); diff --git a/drivers/uwb/drp-ie.c b/drivers/uwb/drp-ie.c index 75491d47806..2840d7bf9e6 100644 --- a/drivers/uwb/drp-ie.c +++ b/drivers/uwb/drp-ie.c @@ -22,6 +22,96 @@ #include "uwb-internal.h" + +/* + * Return the reason code for a reservations's DRP IE. + */ +int uwb_rsv_reason_code(struct uwb_rsv *rsv) +{ + static const int reason_codes[] = { + [UWB_RSV_STATE_O_INITIATED] = UWB_DRP_REASON_ACCEPTED, + [UWB_RSV_STATE_O_PENDING] = UWB_DRP_REASON_ACCEPTED, + [UWB_RSV_STATE_O_MODIFIED] = UWB_DRP_REASON_MODIFIED, + [UWB_RSV_STATE_O_ESTABLISHED] = UWB_DRP_REASON_ACCEPTED, + [UWB_RSV_STATE_O_TO_BE_MOVED] = UWB_DRP_REASON_ACCEPTED, + [UWB_RSV_STATE_O_MOVE_COMBINING] = UWB_DRP_REASON_MODIFIED, + [UWB_RSV_STATE_O_MOVE_REDUCING] = UWB_DRP_REASON_MODIFIED, + [UWB_RSV_STATE_O_MOVE_EXPANDING] = UWB_DRP_REASON_ACCEPTED, + [UWB_RSV_STATE_T_ACCEPTED] = UWB_DRP_REASON_ACCEPTED, + [UWB_RSV_STATE_T_CONFLICT] = UWB_DRP_REASON_CONFLICT, + [UWB_RSV_STATE_T_PENDING] = UWB_DRP_REASON_PENDING, + [UWB_RSV_STATE_T_DENIED] = UWB_DRP_REASON_DENIED, + [UWB_RSV_STATE_T_RESIZED] = UWB_DRP_REASON_ACCEPTED, + [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = UWB_DRP_REASON_ACCEPTED, + [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = UWB_DRP_REASON_CONFLICT, + [UWB_RSV_STATE_T_EXPANDING_PENDING] = UWB_DRP_REASON_PENDING, + [UWB_RSV_STATE_T_EXPANDING_DENIED] = UWB_DRP_REASON_DENIED, + }; + + return reason_codes[rsv->state]; +} + +/* + * Return the reason code for a reservations's companion DRP IE . + */ +int uwb_rsv_companion_reason_code(struct uwb_rsv *rsv) +{ + static const int companion_reason_codes[] = { + [UWB_RSV_STATE_O_MOVE_EXPANDING] = UWB_DRP_REASON_ACCEPTED, + [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = UWB_DRP_REASON_ACCEPTED, + [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = UWB_DRP_REASON_CONFLICT, + [UWB_RSV_STATE_T_EXPANDING_PENDING] = UWB_DRP_REASON_PENDING, + [UWB_RSV_STATE_T_EXPANDING_DENIED] = UWB_DRP_REASON_DENIED, + }; + + return companion_reason_codes[rsv->state]; +} + +/* + * Return the status bit for a reservations's DRP IE. + */ +int uwb_rsv_status(struct uwb_rsv *rsv) +{ + static const int statuses[] = { + [UWB_RSV_STATE_O_INITIATED] = 0, + [UWB_RSV_STATE_O_PENDING] = 0, + [UWB_RSV_STATE_O_MODIFIED] = 1, + [UWB_RSV_STATE_O_ESTABLISHED] = 1, + [UWB_RSV_STATE_O_TO_BE_MOVED] = 0, + [UWB_RSV_STATE_O_MOVE_COMBINING] = 1, + [UWB_RSV_STATE_O_MOVE_REDUCING] = 1, + [UWB_RSV_STATE_O_MOVE_EXPANDING] = 1, + [UWB_RSV_STATE_T_ACCEPTED] = 1, + [UWB_RSV_STATE_T_CONFLICT] = 0, + [UWB_RSV_STATE_T_PENDING] = 0, + [UWB_RSV_STATE_T_DENIED] = 0, + [UWB_RSV_STATE_T_RESIZED] = 1, + [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = 1, + [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = 1, + [UWB_RSV_STATE_T_EXPANDING_PENDING] = 1, + [UWB_RSV_STATE_T_EXPANDING_DENIED] = 1, + + }; + + return statuses[rsv->state]; +} + +/* + * Return the status bit for a reservations's companion DRP IE . + */ +int uwb_rsv_companion_status(struct uwb_rsv *rsv) +{ + static const int companion_statuses[] = { + [UWB_RSV_STATE_O_MOVE_EXPANDING] = 0, + [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = 1, + [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = 0, + [UWB_RSV_STATE_T_EXPANDING_PENDING] = 0, + [UWB_RSV_STATE_T_EXPANDING_DENIED] = 0, + }; + + return companion_statuses[rsv->state]; +} + /* * Allocate a DRP IE. * @@ -33,16 +123,12 @@ static struct uwb_ie_drp *uwb_drp_ie_alloc(void) { struct uwb_ie_drp *drp_ie; - unsigned tiebreaker; drp_ie = kzalloc(sizeof(struct uwb_ie_drp) + UWB_NUM_ZONES * sizeof(struct uwb_drp_alloc), GFP_KERNEL); if (drp_ie) { drp_ie->hdr.element_id = UWB_IE_DRP; - - get_random_bytes(&tiebreaker, sizeof(unsigned)); - uwb_ie_drp_set_tiebreaker(drp_ie, tiebreaker & 1); } return drp_ie; } @@ -103,43 +189,17 @@ static void uwb_drp_ie_from_bm(struct uwb_ie_drp *drp_ie, */ int uwb_drp_ie_update(struct uwb_rsv *rsv) { - struct device *dev = &rsv->rc->uwb_dev.dev; struct uwb_ie_drp *drp_ie; - int reason_code, status; + struct uwb_rsv_move *mv; + int unsafe; - switch (rsv->state) { - case UWB_RSV_STATE_NONE: + if (rsv->state == UWB_RSV_STATE_NONE) { kfree(rsv->drp_ie); rsv->drp_ie = NULL; return 0; - case UWB_RSV_STATE_O_INITIATED: - reason_code = UWB_DRP_REASON_ACCEPTED; - status = 0; - break; - case UWB_RSV_STATE_O_PENDING: - reason_code = UWB_DRP_REASON_ACCEPTED; - status = 0; - break; - case UWB_RSV_STATE_O_MODIFIED: - reason_code = UWB_DRP_REASON_MODIFIED; - status = 1; - break; - case UWB_RSV_STATE_O_ESTABLISHED: - reason_code = UWB_DRP_REASON_ACCEPTED; - status = 1; - break; - case UWB_RSV_STATE_T_ACCEPTED: - reason_code = UWB_DRP_REASON_ACCEPTED; - status = 1; - break; - case UWB_RSV_STATE_T_DENIED: - reason_code = UWB_DRP_REASON_DENIED; - status = 0; - break; - default: - dev_dbg(dev, "rsv with unhandled state (%d)\n", rsv->state); - return -EINVAL; } + + unsafe = rsv->mas.unsafe ? 1 : 0; if (rsv->drp_ie == NULL) { rsv->drp_ie = uwb_drp_ie_alloc(); @@ -148,9 +208,11 @@ int uwb_drp_ie_update(struct uwb_rsv *rsv) } drp_ie = rsv->drp_ie; + uwb_ie_drp_set_unsafe(drp_ie, unsafe); + uwb_ie_drp_set_tiebreaker(drp_ie, rsv->tiebreaker); uwb_ie_drp_set_owner(drp_ie, uwb_rsv_is_owner(rsv)); - uwb_ie_drp_set_status(drp_ie, status); - uwb_ie_drp_set_reason_code(drp_ie, reason_code); + uwb_ie_drp_set_status(drp_ie, uwb_rsv_status(rsv)); + uwb_ie_drp_set_reason_code(drp_ie, uwb_rsv_reason_code(rsv)); uwb_ie_drp_set_stream_index(drp_ie, rsv->stream); uwb_ie_drp_set_type(drp_ie, rsv->type); @@ -168,6 +230,27 @@ int uwb_drp_ie_update(struct uwb_rsv *rsv) uwb_drp_ie_from_bm(drp_ie, &rsv->mas); + if (uwb_rsv_has_two_drp_ies(rsv)) { + mv = &rsv->mv; + if (mv->companion_drp_ie == NULL) { + mv->companion_drp_ie = uwb_drp_ie_alloc(); + if (mv->companion_drp_ie == NULL) + return -ENOMEM; + } + drp_ie = mv->companion_drp_ie; + + /* keep all the same configuration of the main drp_ie */ + memcpy(drp_ie, rsv->drp_ie, sizeof(struct uwb_ie_drp)); + + + /* FIXME: handle properly the unsafe bit */ + uwb_ie_drp_set_unsafe(drp_ie, 1); + uwb_ie_drp_set_status(drp_ie, uwb_rsv_companion_status(rsv)); + uwb_ie_drp_set_reason_code(drp_ie, uwb_rsv_companion_reason_code(rsv)); + + uwb_drp_ie_from_bm(drp_ie, &mv->companion_mas); + } + rsv->ie_valid = true; return 0; } @@ -218,6 +301,8 @@ void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie) u8 zone; u16 zone_mask; + bitmap_zero(bm->bm, UWB_NUM_MAS); + for (cnt = 0; cnt < numallocs; cnt++) { alloc = &drp_ie->allocs[cnt]; zone_bm = le16_to_cpu(alloc->zone_bm); @@ -229,3 +314,4 @@ void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie) } } } + diff --git a/drivers/uwb/drp.c b/drivers/uwb/drp.c index fe328146adb..2b4f9406789 100644 --- a/drivers/uwb/drp.c +++ b/drivers/uwb/drp.c @@ -23,6 +23,59 @@ #include #include "uwb-internal.h" + +/* DRP Conflict Actions ([ECMA-368 2nd Edition] 17.4.6) */ +enum uwb_drp_conflict_action { + /* Reservation is mantained, no action needed */ + UWB_DRP_CONFLICT_MANTAIN = 0, + + /* the device shall not transmit frames in conflicting MASs in + * the following superframe. If the device is the reservation + * target, it shall also set the Reason Code in its DRP IE to + * Conflict in its beacon in the following superframe. + */ + UWB_DRP_CONFLICT_ACT1, + + /* the device shall not set the Reservation Status bit to ONE + * and shall not transmit frames in conflicting MASs. If the + * device is the reservation target, it shall also set the + * Reason Code in its DRP IE to Conflict. + */ + UWB_DRP_CONFLICT_ACT2, + + /* the device shall not transmit frames in conflicting MASs in + * the following superframe. It shall remove the conflicting + * MASs from the reservation or set the Reservation Status to + * ZERO in its beacon in the following superframe. If the + * device is the reservation target, it shall also set the + * Reason Code in its DRP IE to Conflict. + */ + UWB_DRP_CONFLICT_ACT3, +}; + + +static void uwb_rc_set_drp_cmd_done(struct uwb_rc *rc, void *arg, + struct uwb_rceb *reply, ssize_t reply_size) +{ + struct uwb_rc_evt_set_drp_ie *r = (struct uwb_rc_evt_set_drp_ie *)reply; + + if (r != NULL) { + if (r->bResultCode != UWB_RC_RES_SUCCESS) + dev_err(&rc->uwb_dev.dev, "SET-DRP-IE failed: %s (%d)\n", + uwb_rc_strerror(r->bResultCode), r->bResultCode); + } else + dev_err(&rc->uwb_dev.dev, "SET-DRP-IE: timeout\n"); + + spin_lock(&rc->rsvs_lock); + if (rc->set_drp_ie_pending > 1) { + rc->set_drp_ie_pending = 0; + uwb_rsv_queue_update(rc); + } else { + rc->set_drp_ie_pending = 0; + } + spin_unlock(&rc->rsvs_lock); +} + /** * Construct and send the SET DRP IE * @@ -46,18 +99,23 @@ int uwb_rc_send_all_drp_ie(struct uwb_rc *rc) { int result; - struct device *dev = &rc->uwb_dev.dev; struct uwb_rc_cmd_set_drp_ie *cmd; - struct uwb_rc_evt_set_drp_ie reply; struct uwb_rsv *rsv; + struct uwb_rsv_move *mv; int num_bytes = 0; u8 *IEDataptr; result = -ENOMEM; /* First traverse all reservations to determine memory needed. */ list_for_each_entry(rsv, &rc->reservations, rc_node) { - if (rsv->drp_ie != NULL) + if (rsv->drp_ie != NULL) { num_bytes += rsv->drp_ie->hdr.length + 2; + if (uwb_rsv_has_two_drp_ies(rsv) && + (rsv->mv.companion_drp_ie != NULL)) { + mv = &rsv->mv; + num_bytes += mv->companion_drp_ie->hdr.length + 2; + } + } } num_bytes += sizeof(rc->drp_avail.ie); cmd = kzalloc(sizeof(*cmd) + num_bytes, GFP_KERNEL); @@ -68,109 +126,322 @@ int uwb_rc_send_all_drp_ie(struct uwb_rc *rc) cmd->wIELength = num_bytes; IEDataptr = (u8 *)&cmd->IEData[0]; + /* FIXME: DRV avail IE is not always needed */ + /* put DRP avail IE first */ + memcpy(IEDataptr, &rc->drp_avail.ie, sizeof(rc->drp_avail.ie)); + IEDataptr += sizeof(struct uwb_ie_drp_avail); + /* Next traverse all reservations to place IEs in allocated memory. */ list_for_each_entry(rsv, &rc->reservations, rc_node) { if (rsv->drp_ie != NULL) { memcpy(IEDataptr, rsv->drp_ie, rsv->drp_ie->hdr.length + 2); IEDataptr += rsv->drp_ie->hdr.length + 2; + + if (uwb_rsv_has_two_drp_ies(rsv) && + (rsv->mv.companion_drp_ie != NULL)) { + mv = &rsv->mv; + memcpy(IEDataptr, mv->companion_drp_ie, + mv->companion_drp_ie->hdr.length + 2); + IEDataptr += mv->companion_drp_ie->hdr.length + 2; + } } } - memcpy(IEDataptr, &rc->drp_avail.ie, sizeof(rc->drp_avail.ie)); - reply.rceb.bEventType = UWB_RC_CET_GENERAL; - reply.rceb.wEvent = UWB_RC_CMD_SET_DRP_IE; - result = uwb_rc_cmd(rc, "SET-DRP-IE", &cmd->rccb, - sizeof(*cmd) + num_bytes, &reply.rceb, - sizeof(reply)); - if (result < 0) - goto error_cmd; - result = le16_to_cpu(reply.wRemainingSpace); - if (reply.bResultCode != UWB_RC_RES_SUCCESS) { - dev_err(&rc->uwb_dev.dev, "SET-DRP-IE: command execution " - "failed: %s (%d). RemainingSpace in beacon " - "= %d\n", uwb_rc_strerror(reply.bResultCode), - reply.bResultCode, result); - result = -EIO; - } else { - dev_dbg(dev, "SET-DRP-IE sent. RemainingSpace in beacon " - "= %d.\n", result); - result = 0; - } -error_cmd: + result = uwb_rc_cmd_async(rc, "SET-DRP-IE", &cmd->rccb, sizeof(*cmd) + num_bytes, + UWB_RC_CET_GENERAL, UWB_RC_CMD_SET_DRP_IE, + uwb_rc_set_drp_cmd_done, NULL); + + rc->set_drp_ie_pending = 1; + kfree(cmd); error: return result; } -void uwb_drp_handle_timeout(struct uwb_rsv *rsv) +/* + * Evaluate the action to perform using conflict resolution rules + * + * Return a uwb_drp_conflict_action. + */ +static int evaluate_conflict_action(struct uwb_ie_drp *ext_drp_ie, int ext_beacon_slot, + struct uwb_rsv *rsv, int our_status) { - struct device *dev = &rsv->rc->uwb_dev.dev; + int our_tie_breaker = rsv->tiebreaker; + int our_type = rsv->type; + int our_beacon_slot = rsv->rc->uwb_dev.beacon_slot; + + int ext_tie_breaker = uwb_ie_drp_tiebreaker(ext_drp_ie); + int ext_status = uwb_ie_drp_status(ext_drp_ie); + int ext_type = uwb_ie_drp_type(ext_drp_ie); + + + /* [ECMA-368 2nd Edition] 17.4.6 */ + if (ext_type == UWB_DRP_TYPE_PCA && our_type == UWB_DRP_TYPE_PCA) { + return UWB_DRP_CONFLICT_MANTAIN; + } + + /* [ECMA-368 2nd Edition] 17.4.6-1 */ + if (our_type == UWB_DRP_TYPE_ALIEN_BP) { + return UWB_DRP_CONFLICT_MANTAIN; + } + + /* [ECMA-368 2nd Edition] 17.4.6-2 */ + if (ext_type == UWB_DRP_TYPE_ALIEN_BP) { + /* here we know our_type != UWB_DRP_TYPE_ALIEN_BP */ + return UWB_DRP_CONFLICT_ACT1; + } + + /* [ECMA-368 2nd Edition] 17.4.6-3 */ + if (our_status == 0 && ext_status == 1) { + return UWB_DRP_CONFLICT_ACT2; + } - dev_dbg(dev, "reservation timeout in state %s (%d)\n", - uwb_rsv_state_str(rsv->state), rsv->state); + /* [ECMA-368 2nd Edition] 17.4.6-4 */ + if (our_status == 1 && ext_status == 0) { + return UWB_DRP_CONFLICT_MANTAIN; + } - switch (rsv->state) { - case UWB_RSV_STATE_O_INITIATED: - if (rsv->is_multicast) { - uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED); - return; + /* [ECMA-368 2nd Edition] 17.4.6-5a */ + if (our_tie_breaker == ext_tie_breaker && + our_beacon_slot < ext_beacon_slot) { + return UWB_DRP_CONFLICT_MANTAIN; + } + + /* [ECMA-368 2nd Edition] 17.4.6-5b */ + if (our_tie_breaker != ext_tie_breaker && + our_beacon_slot > ext_beacon_slot) { + return UWB_DRP_CONFLICT_MANTAIN; + } + + if (our_status == 0) { + if (our_tie_breaker == ext_tie_breaker) { + /* [ECMA-368 2nd Edition] 17.4.6-6a */ + if (our_beacon_slot > ext_beacon_slot) { + return UWB_DRP_CONFLICT_ACT2; + } + } else { + /* [ECMA-368 2nd Edition] 17.4.6-6b */ + if (our_beacon_slot < ext_beacon_slot) { + return UWB_DRP_CONFLICT_ACT2; + } } - break; - case UWB_RSV_STATE_O_ESTABLISHED: - if (rsv->is_multicast) - return; - break; - default: - break; + } else { + if (our_tie_breaker == ext_tie_breaker) { + /* [ECMA-368 2nd Edition] 17.4.6-7a */ + if (our_beacon_slot > ext_beacon_slot) { + return UWB_DRP_CONFLICT_ACT3; + } + } else { + /* [ECMA-368 2nd Edition] 17.4.6-7b */ + if (our_beacon_slot < ext_beacon_slot) { + return UWB_DRP_CONFLICT_ACT3; + } + } + } + return UWB_DRP_CONFLICT_MANTAIN; +} + +static void handle_conflict_normal(struct uwb_ie_drp *drp_ie, + int ext_beacon_slot, + struct uwb_rsv *rsv, + struct uwb_mas_bm *conflicting_mas) +{ + struct uwb_rc *rc = rsv->rc; + struct uwb_rsv_move *mv = &rsv->mv; + struct uwb_drp_backoff_win *bow = &rc->bow; + int action; + + action = evaluate_conflict_action(drp_ie, ext_beacon_slot, rsv, uwb_rsv_status(rsv)); + + if (uwb_rsv_is_owner(rsv)) { + switch(action) { + case UWB_DRP_CONFLICT_ACT2: + /* try move */ + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_TO_BE_MOVED); + if (bow->can_reserve_extra_mases == false) + uwb_rsv_backoff_win_increment(rc); + + break; + case UWB_DRP_CONFLICT_ACT3: + uwb_rsv_backoff_win_increment(rc); + /* drop some mases with reason modified */ + /* put in the companion the mases to be dropped */ + bitmap_and(mv->companion_mas.bm, rsv->mas.bm, conflicting_mas->bm, UWB_NUM_MAS); + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MODIFIED); + default: + break; + } + } else { + switch(action) { + case UWB_DRP_CONFLICT_ACT2: + case UWB_DRP_CONFLICT_ACT3: + uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_CONFLICT); + default: + break; + } + + } + +} + +static void handle_conflict_expanding(struct uwb_ie_drp *drp_ie, int ext_beacon_slot, + struct uwb_rsv *rsv, bool companion_only, + struct uwb_mas_bm *conflicting_mas) +{ + struct uwb_rc *rc = rsv->rc; + struct uwb_drp_backoff_win *bow = &rc->bow; + struct uwb_rsv_move *mv = &rsv->mv; + int action; + + if (companion_only) { + /* status of companion is 0 at this point */ + action = evaluate_conflict_action(drp_ie, ext_beacon_slot, rsv, 0); + if (uwb_rsv_is_owner(rsv)) { + switch(action) { + case UWB_DRP_CONFLICT_ACT2: + case UWB_DRP_CONFLICT_ACT3: + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED); + rsv->needs_release_companion_mas = false; + if (bow->can_reserve_extra_mases == false) + uwb_rsv_backoff_win_increment(rc); + uwb_drp_avail_release(rsv->rc, &rsv->mv.companion_mas); + } + } else { /* rsv is target */ + switch(action) { + case UWB_DRP_CONFLICT_ACT2: + case UWB_DRP_CONFLICT_ACT3: + uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_EXPANDING_CONFLICT); + /* send_drp_avail_ie = true; */ + } + } + } else { /* also base part of the reservation is conflicting */ + if (uwb_rsv_is_owner(rsv)) { + uwb_rsv_backoff_win_increment(rc); + /* remove companion part */ + uwb_drp_avail_release(rsv->rc, &rsv->mv.companion_mas); + + /* drop some mases with reason modified */ + + /* put in the companion the mases to be dropped */ + bitmap_andnot(mv->companion_mas.bm, rsv->mas.bm, conflicting_mas->bm, UWB_NUM_MAS); + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MODIFIED); + } else { /* it is a target rsv */ + uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_CONFLICT); + /* send_drp_avail_ie = true; */ + } + } +} + +static void uwb_drp_handle_conflict_rsv(struct uwb_rc *rc, struct uwb_rsv *rsv, + struct uwb_rc_evt_drp *drp_evt, + struct uwb_ie_drp *drp_ie, + struct uwb_mas_bm *conflicting_mas) +{ + struct uwb_rsv_move *mv; + + /* check if the conflicting reservation has two drp_ies */ + if (uwb_rsv_has_two_drp_ies(rsv)) { + mv = &rsv->mv; + if (bitmap_intersects(rsv->mas.bm, conflicting_mas->bm, UWB_NUM_MAS)) { + handle_conflict_expanding(drp_ie, drp_evt->beacon_slot_number, + rsv, false, conflicting_mas); + } else { + if (bitmap_intersects(mv->companion_mas.bm, conflicting_mas->bm, UWB_NUM_MAS)) { + handle_conflict_expanding(drp_ie, drp_evt->beacon_slot_number, + rsv, true, conflicting_mas); + } + } + } else if (bitmap_intersects(rsv->mas.bm, conflicting_mas->bm, UWB_NUM_MAS)) { + handle_conflict_normal(drp_ie, drp_evt->beacon_slot_number, rsv, conflicting_mas); } - uwb_rsv_remove(rsv); } +static void uwb_drp_handle_all_conflict_rsv(struct uwb_rc *rc, + struct uwb_rc_evt_drp *drp_evt, + struct uwb_ie_drp *drp_ie, + struct uwb_mas_bm *conflicting_mas) +{ + struct uwb_rsv *rsv; + + list_for_each_entry(rsv, &rc->reservations, rc_node) { + uwb_drp_handle_conflict_rsv(rc, rsv, drp_evt, drp_ie, conflicting_mas); + } +} + /* * Based on the DRP IE, transition a target reservation to a new * state. */ static void uwb_drp_process_target(struct uwb_rc *rc, struct uwb_rsv *rsv, - struct uwb_ie_drp *drp_ie) + struct uwb_ie_drp *drp_ie, struct uwb_rc_evt_drp *drp_evt) { struct device *dev = &rc->uwb_dev.dev; + struct uwb_rsv_move *mv = &rsv->mv; int status; enum uwb_drp_reason reason_code; - + struct uwb_mas_bm mas; + status = uwb_ie_drp_status(drp_ie); reason_code = uwb_ie_drp_reason_code(drp_ie); + uwb_drp_ie_to_bm(&mas, drp_ie); - if (status) { - switch (reason_code) { - case UWB_DRP_REASON_ACCEPTED: - uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_ACCEPTED); - break; - case UWB_DRP_REASON_MODIFIED: - dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n", - reason_code, status); + switch (reason_code) { + case UWB_DRP_REASON_ACCEPTED: + + if (rsv->state == UWB_RSV_STATE_T_CONFLICT) { + uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_CONFLICT); break; - default: - dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n", - reason_code, status); } - } else { - switch (reason_code) { - case UWB_DRP_REASON_ACCEPTED: - /* New reservations are handled in uwb_rsv_find(). */ - break; - case UWB_DRP_REASON_DENIED: - uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE); - break; - case UWB_DRP_REASON_CONFLICT: - case UWB_DRP_REASON_MODIFIED: - dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n", - reason_code, status); + + if (rsv->state == UWB_RSV_STATE_T_EXPANDING_ACCEPTED) { + /* drp_ie is companion */ + if (!bitmap_equal(rsv->mas.bm, mas.bm, UWB_NUM_MAS)) + /* stroke companion */ + uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_EXPANDING_ACCEPTED); + } else { + if (!bitmap_equal(rsv->mas.bm, mas.bm, UWB_NUM_MAS)) { + if (uwb_drp_avail_reserve_pending(rc, &mas) == -EBUSY) { + /* FIXME: there is a conflict, find + * the conflicting reservations and + * take a sensible action. Consider + * that in drp_ie there is the + * "neighbour" */ + uwb_drp_handle_all_conflict_rsv(rc, drp_evt, drp_ie, &mas); + } else { + /* accept the extra reservation */ + bitmap_copy(mv->companion_mas.bm, mas.bm, UWB_NUM_MAS); + uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_EXPANDING_ACCEPTED); + } + } else { + if (status) { + uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_ACCEPTED); + } + } + + } + break; + + case UWB_DRP_REASON_MODIFIED: + /* check to see if we have already modified the reservation */ + if (bitmap_equal(rsv->mas.bm, mas.bm, UWB_NUM_MAS)) { + uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_ACCEPTED); break; - default: - dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n", - reason_code, status); } + + /* find if the owner wants to expand or reduce */ + if (bitmap_subset(mas.bm, rsv->mas.bm, UWB_NUM_MAS)) { + /* owner is reducing */ + bitmap_andnot(mv->companion_mas.bm, rsv->mas.bm, mas.bm, UWB_NUM_MAS); + uwb_drp_avail_release(rsv->rc, &mv->companion_mas); + } + + bitmap_copy(rsv->mas.bm, mas.bm, UWB_NUM_MAS); + uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_RESIZED); + break; + default: + dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n", + reason_code, status); } } @@ -179,23 +450,60 @@ static void uwb_drp_process_target(struct uwb_rc *rc, struct uwb_rsv *rsv, * state. */ static void uwb_drp_process_owner(struct uwb_rc *rc, struct uwb_rsv *rsv, - struct uwb_ie_drp *drp_ie) + struct uwb_dev *src, struct uwb_ie_drp *drp_ie, + struct uwb_rc_evt_drp *drp_evt) { struct device *dev = &rc->uwb_dev.dev; + struct uwb_rsv_move *mv = &rsv->mv; int status; enum uwb_drp_reason reason_code; + struct uwb_mas_bm mas; status = uwb_ie_drp_status(drp_ie); reason_code = uwb_ie_drp_reason_code(drp_ie); + uwb_drp_ie_to_bm(&mas, drp_ie); if (status) { switch (reason_code) { case UWB_DRP_REASON_ACCEPTED: - uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED); - break; - case UWB_DRP_REASON_MODIFIED: - dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n", - reason_code, status); + switch (rsv->state) { + case UWB_RSV_STATE_O_PENDING: + case UWB_RSV_STATE_O_INITIATED: + case UWB_RSV_STATE_O_ESTABLISHED: + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED); + break; + case UWB_RSV_STATE_O_MODIFIED: + if (bitmap_equal(mas.bm, rsv->mas.bm, UWB_NUM_MAS)) { + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED); + } else { + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MODIFIED); + } + break; + + case UWB_RSV_STATE_O_MOVE_REDUCING: /* shouldn' t be a problem */ + if (bitmap_equal(mas.bm, rsv->mas.bm, UWB_NUM_MAS)) { + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED); + } else { + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_REDUCING); + } + break; + case UWB_RSV_STATE_O_MOVE_EXPANDING: + if (bitmap_equal(mas.bm, mv->companion_mas.bm, UWB_NUM_MAS)) { + /* Companion reservation accepted */ + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_COMBINING); + } else { + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_EXPANDING); + } + break; + case UWB_RSV_STATE_O_MOVE_COMBINING: + if (bitmap_equal(mas.bm, rsv->mas.bm, UWB_NUM_MAS)) + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_REDUCING); + else + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_COMBINING); + break; + default: + break; + } break; default: dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n", @@ -210,9 +518,10 @@ static void uwb_drp_process_owner(struct uwb_rc *rc, struct uwb_rsv *rsv, uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE); break; case UWB_DRP_REASON_CONFLICT: - case UWB_DRP_REASON_MODIFIED: - dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n", - reason_code, status); + /* resolve the conflict */ + bitmap_complement(mas.bm, src->last_availability_bm, + UWB_NUM_MAS); + uwb_drp_handle_conflict_rsv(rc, rsv, drp_evt, drp_ie, &mas); break; default: dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n", @@ -221,12 +530,110 @@ static void uwb_drp_process_owner(struct uwb_rc *rc, struct uwb_rsv *rsv, } } +static void uwb_cnflt_alien_stroke_timer(struct uwb_cnflt_alien *cnflt) +{ + unsigned timeout_us = UWB_MAX_LOST_BEACONS * UWB_SUPERFRAME_LENGTH_US; + mod_timer(&cnflt->timer, jiffies + usecs_to_jiffies(timeout_us)); +} + +static void uwb_cnflt_update_work(struct work_struct *work) +{ + struct uwb_cnflt_alien *cnflt = container_of(work, + struct uwb_cnflt_alien, + cnflt_update_work); + struct uwb_cnflt_alien *c; + struct uwb_rc *rc = cnflt->rc; + + unsigned long delay_us = UWB_MAS_LENGTH_US * UWB_MAS_PER_ZONE; + + mutex_lock(&rc->rsvs_mutex); + + list_del(&cnflt->rc_node); + + /* update rc global conflicting alien bitmap */ + bitmap_zero(rc->cnflt_alien_bitmap.bm, UWB_NUM_MAS); + + list_for_each_entry(c, &rc->cnflt_alien_list, rc_node) { + bitmap_or(rc->cnflt_alien_bitmap.bm, rc->cnflt_alien_bitmap.bm, c->mas.bm, UWB_NUM_MAS); + } + + queue_delayed_work(rc->rsv_workq, &rc->rsv_alien_bp_work, usecs_to_jiffies(delay_us)); + + kfree(cnflt); + mutex_unlock(&rc->rsvs_mutex); +} + +static void uwb_cnflt_timer(unsigned long arg) +{ + struct uwb_cnflt_alien *cnflt = (struct uwb_cnflt_alien *)arg; + + queue_work(cnflt->rc->rsv_workq, &cnflt->cnflt_update_work); +} + /* - * Process a received DRP IE, it's either for a reservation owned by - * the RC or targeted at it (or it's for a WUSB cluster reservation). + * We have received an DRP_IE of type Alien BP and we need to make + * sure we do not transmit in conflicting MASs. */ -static void uwb_drp_process(struct uwb_rc *rc, struct uwb_dev *src, - struct uwb_ie_drp *drp_ie) +static void uwb_drp_handle_alien_drp(struct uwb_rc *rc, struct uwb_ie_drp *drp_ie) +{ + struct device *dev = &rc->uwb_dev.dev; + struct uwb_mas_bm mas; + struct uwb_cnflt_alien *cnflt; + char buf[72]; + unsigned long delay_us = UWB_MAS_LENGTH_US * UWB_MAS_PER_ZONE; + + uwb_drp_ie_to_bm(&mas, drp_ie); + bitmap_scnprintf(buf, sizeof(buf), mas.bm, UWB_NUM_MAS); + + list_for_each_entry(cnflt, &rc->cnflt_alien_list, rc_node) { + if (bitmap_equal(cnflt->mas.bm, mas.bm, UWB_NUM_MAS)) { + /* Existing alien BP reservation conflicting + * bitmap, just reset the timer */ + uwb_cnflt_alien_stroke_timer(cnflt); + return; + } + } + + /* New alien BP reservation conflicting bitmap */ + + /* alloc and initialize new uwb_cnflt_alien */ + cnflt = kzalloc(sizeof(struct uwb_cnflt_alien), GFP_KERNEL); + if (!cnflt) + dev_err(dev, "failed to alloc uwb_cnflt_alien struct\n"); + INIT_LIST_HEAD(&cnflt->rc_node); + init_timer(&cnflt->timer); + cnflt->timer.function = uwb_cnflt_timer; + cnflt->timer.data = (unsigned long)cnflt; + + cnflt->rc = rc; + INIT_WORK(&cnflt->cnflt_update_work, uwb_cnflt_update_work); + + bitmap_copy(cnflt->mas.bm, mas.bm, UWB_NUM_MAS); + + list_add_tail(&cnflt->rc_node, &rc->cnflt_alien_list); + + /* update rc global conflicting alien bitmap */ + bitmap_or(rc->cnflt_alien_bitmap.bm, rc->cnflt_alien_bitmap.bm, mas.bm, UWB_NUM_MAS); + + queue_delayed_work(rc->rsv_workq, &rc->rsv_alien_bp_work, usecs_to_jiffies(delay_us)); + + /* start the timer */ + uwb_cnflt_alien_stroke_timer(cnflt); +} + +static void uwb_drp_process_not_involved(struct uwb_rc *rc, + struct uwb_rc_evt_drp *drp_evt, + struct uwb_ie_drp *drp_ie) +{ + struct uwb_mas_bm mas; + + uwb_drp_ie_to_bm(&mas, drp_ie); + uwb_drp_handle_all_conflict_rsv(rc, drp_evt, drp_ie, &mas); +} + +static void uwb_drp_process_involved(struct uwb_rc *rc, struct uwb_dev *src, + struct uwb_rc_evt_drp *drp_evt, + struct uwb_ie_drp *drp_ie) { struct uwb_rsv *rsv; @@ -239,7 +646,7 @@ static void uwb_drp_process(struct uwb_rc *rc, struct uwb_dev *src, */ return; } - + /* * Do nothing with DRP IEs for reservations that have been * terminated. @@ -248,13 +655,43 @@ static void uwb_drp_process(struct uwb_rc *rc, struct uwb_dev *src, uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE); return; } - + if (uwb_ie_drp_owner(drp_ie)) - uwb_drp_process_target(rc, rsv, drp_ie); + uwb_drp_process_target(rc, rsv, drp_ie, drp_evt); + else + uwb_drp_process_owner(rc, rsv, src, drp_ie, drp_evt); + +} + + +static bool uwb_drp_involves_us(struct uwb_rc *rc, struct uwb_ie_drp *drp_ie) +{ + return uwb_dev_addr_cmp(&rc->uwb_dev.dev_addr, &drp_ie->dev_addr) == 0; +} + +/* + * Process a received DRP IE. + */ +static void uwb_drp_process(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt, + struct uwb_dev *src, struct uwb_ie_drp *drp_ie) +{ + if (uwb_ie_drp_type(drp_ie) == UWB_DRP_TYPE_ALIEN_BP) + uwb_drp_handle_alien_drp(rc, drp_ie); + else if (uwb_drp_involves_us(rc, drp_ie)) + uwb_drp_process_involved(rc, src, drp_evt, drp_ie); else - uwb_drp_process_owner(rc, rsv, drp_ie); + uwb_drp_process_not_involved(rc, drp_evt, drp_ie); } +/* + * Process a received DRP Availability IE + */ +static void uwb_drp_availability_process(struct uwb_rc *rc, struct uwb_dev *src, + struct uwb_ie_drp_avail *drp_availability_ie) +{ + bitmap_copy(src->last_availability_bm, + drp_availability_ie->bmp, UWB_NUM_MAS); +} /* * Process all the DRP IEs (both DRP IEs and the DRP Availability IE) @@ -276,10 +713,10 @@ void uwb_drp_process_all(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt, switch (ie_hdr->element_id) { case UWB_IE_DRP_AVAILABILITY: - /* FIXME: does something need to be done with this? */ + uwb_drp_availability_process(rc, src_dev, (struct uwb_ie_drp_avail *)ie_hdr); break; case UWB_IE_DRP: - uwb_drp_process(rc, src_dev, (struct uwb_ie_drp *)ie_hdr); + uwb_drp_process(rc, drp_evt, src_dev, (struct uwb_ie_drp *)ie_hdr); break; default: dev_warn(dev, "unexpected IE in DRP notification\n"); @@ -292,55 +729,6 @@ void uwb_drp_process_all(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt, (int)ielen); } - -/* - * Go through all the DRP IEs and find the ones that conflict with our - * reservations. - * - * FIXME: must resolve the conflict according the the rules in - * [ECMA-368]. - */ -static -void uwb_drp_process_conflict_all(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt, - size_t ielen, struct uwb_dev *src_dev) -{ - struct device *dev = &rc->uwb_dev.dev; - struct uwb_ie_hdr *ie_hdr; - struct uwb_ie_drp *drp_ie; - void *ptr; - - ptr = drp_evt->ie_data; - for (;;) { - ie_hdr = uwb_ie_next(&ptr, &ielen); - if (!ie_hdr) - break; - - drp_ie = container_of(ie_hdr, struct uwb_ie_drp, hdr); - - /* FIXME: check if this DRP IE conflicts. */ - } - - if (ielen > 0) - dev_warn(dev, "%d octets remaining in DRP notification\n", - (int)ielen); -} - - -/* - * Terminate all reservations owned by, or targeted at, 'uwb_dev'. - */ -static void uwb_drp_terminate_all(struct uwb_rc *rc, struct uwb_dev *uwb_dev) -{ - struct uwb_rsv *rsv; - - list_for_each_entry(rsv, &rc->reservations, rc_node) { - if (rsv->owner == uwb_dev - || (rsv->target.type == UWB_RSV_TARGET_DEV && rsv->target.dev == uwb_dev)) - uwb_rsv_remove(rsv); - } -} - - /** * uwbd_evt_handle_rc_drp - handle a DRP_IE event * @evt: the DRP_IE event from the radio controller @@ -381,7 +769,6 @@ int uwbd_evt_handle_rc_drp(struct uwb_event *evt) size_t ielength, bytes_left; struct uwb_dev_addr src_addr; struct uwb_dev *src_dev; - int reason; /* Is there enough data to decode the event (and any IEs in its payload)? */ @@ -417,22 +804,8 @@ int uwbd_evt_handle_rc_drp(struct uwb_event *evt) mutex_lock(&rc->rsvs_mutex); - reason = uwb_rc_evt_drp_reason(drp_evt); - - switch (reason) { - case UWB_DRP_NOTIF_DRP_IE_RCVD: - uwb_drp_process_all(rc, drp_evt, ielength, src_dev); - break; - case UWB_DRP_NOTIF_CONFLICT: - uwb_drp_process_conflict_all(rc, drp_evt, ielength, src_dev); - break; - case UWB_DRP_NOTIF_TERMINATE: - uwb_drp_terminate_all(rc, src_dev); - break; - default: - dev_warn(dev, "ignored DRP event with reason code: %d\n", reason); - break; - } + /* We do not distinguish from the reason */ + uwb_drp_process_all(rc, drp_evt, ielength, src_dev); mutex_unlock(&rc->rsvs_mutex); diff --git a/drivers/uwb/rsv.c b/drivers/uwb/rsv.c index 1cd84f92754..165aec6a8f9 100644 --- a/drivers/uwb/rsv.c +++ b/drivers/uwb/rsv.c @@ -17,20 +17,31 @@ */ #include #include +#include #include "uwb-internal.h" static void uwb_rsv_timer(unsigned long arg); static const char *rsv_states[] = { - [UWB_RSV_STATE_NONE] = "none", - [UWB_RSV_STATE_O_INITIATED] = "initiated", - [UWB_RSV_STATE_O_PENDING] = "pending", - [UWB_RSV_STATE_O_MODIFIED] = "modified", - [UWB_RSV_STATE_O_ESTABLISHED] = "established", - [UWB_RSV_STATE_T_ACCEPTED] = "accepted", - [UWB_RSV_STATE_T_DENIED] = "denied", - [UWB_RSV_STATE_T_PENDING] = "pending", + [UWB_RSV_STATE_NONE] = "none ", + [UWB_RSV_STATE_O_INITIATED] = "o initiated ", + [UWB_RSV_STATE_O_PENDING] = "o pending ", + [UWB_RSV_STATE_O_MODIFIED] = "o modified ", + [UWB_RSV_STATE_O_ESTABLISHED] = "o established ", + [UWB_RSV_STATE_O_TO_BE_MOVED] = "o to be moved ", + [UWB_RSV_STATE_O_MOVE_EXPANDING] = "o move expanding", + [UWB_RSV_STATE_O_MOVE_COMBINING] = "o move combining", + [UWB_RSV_STATE_O_MOVE_REDUCING] = "o move reducing ", + [UWB_RSV_STATE_T_ACCEPTED] = "t accepted ", + [UWB_RSV_STATE_T_CONFLICT] = "t conflict ", + [UWB_RSV_STATE_T_PENDING] = "t pending ", + [UWB_RSV_STATE_T_DENIED] = "t denied ", + [UWB_RSV_STATE_T_RESIZED] = "t resized ", + [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = "t expanding acc ", + [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = "t expanding conf", + [UWB_RSV_STATE_T_EXPANDING_PENDING] = "t expanding pend", + [UWB_RSV_STATE_T_EXPANDING_DENIED] = "t expanding den ", }; static const char *rsv_types[] = { @@ -41,6 +52,31 @@ static const char *rsv_types[] = { [UWB_DRP_TYPE_PCA] = "pca", }; +bool uwb_rsv_has_two_drp_ies(struct uwb_rsv *rsv) +{ + static const bool has_two_drp_ies[] = { + [UWB_RSV_STATE_O_INITIATED] = false, + [UWB_RSV_STATE_O_PENDING] = false, + [UWB_RSV_STATE_O_MODIFIED] = false, + [UWB_RSV_STATE_O_ESTABLISHED] = false, + [UWB_RSV_STATE_O_TO_BE_MOVED] = false, + [UWB_RSV_STATE_O_MOVE_COMBINING] = false, + [UWB_RSV_STATE_O_MOVE_REDUCING] = false, + [UWB_RSV_STATE_O_MOVE_EXPANDING] = true, + [UWB_RSV_STATE_T_ACCEPTED] = false, + [UWB_RSV_STATE_T_CONFLICT] = false, + [UWB_RSV_STATE_T_PENDING] = false, + [UWB_RSV_STATE_T_DENIED] = false, + [UWB_RSV_STATE_T_RESIZED] = false, + [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = true, + [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = true, + [UWB_RSV_STATE_T_EXPANDING_PENDING] = true, + [UWB_RSV_STATE_T_EXPANDING_DENIED] = true, + }; + + return has_two_drp_ies[rsv->state]; +} + /** * uwb_rsv_state_str - return a string for a reservation state * @state: the reservation state. @@ -65,7 +101,7 @@ const char *uwb_rsv_type_str(enum uwb_drp_type type) } EXPORT_SYMBOL_GPL(uwb_rsv_type_str); -static void uwb_rsv_dump(struct uwb_rsv *rsv) +void uwb_rsv_dump(char *text, struct uwb_rsv *rsv) { struct device *dev = &rsv->rc->uwb_dev.dev; struct uwb_dev_addr devaddr; @@ -88,12 +124,12 @@ static void uwb_rsv_release(struct kref *kref) kfree(rsv); } -static void uwb_rsv_get(struct uwb_rsv *rsv) +void uwb_rsv_get(struct uwb_rsv *rsv) { kref_get(&rsv->kref); } -static void uwb_rsv_put(struct uwb_rsv *rsv) +void uwb_rsv_put(struct uwb_rsv *rsv) { kref_put(&rsv->kref, uwb_rsv_release); } @@ -108,6 +144,7 @@ static void uwb_rsv_put(struct uwb_rsv *rsv) static int uwb_rsv_get_stream(struct uwb_rsv *rsv) { struct uwb_rc *rc = rsv->rc; + struct device *dev = &rc->uwb_dev.dev; unsigned long *streams_bm; int stream; @@ -129,12 +166,15 @@ static int uwb_rsv_get_stream(struct uwb_rsv *rsv) rsv->stream = stream; set_bit(stream, streams_bm); + dev_dbg(dev, "get stream %d\n", rsv->stream); + return 0; } static void uwb_rsv_put_stream(struct uwb_rsv *rsv) { struct uwb_rc *rc = rsv->rc; + struct device *dev = &rc->uwb_dev.dev; unsigned long *streams_bm; switch (rsv->target.type) { @@ -149,86 +189,52 @@ static void uwb_rsv_put_stream(struct uwb_rsv *rsv) } clear_bit(rsv->stream, streams_bm); + + dev_dbg(dev, "put stream %d\n", rsv->stream); } -/* - * Generate a MAS allocation with a single row component. - */ -static void uwb_rsv_gen_alloc_row(struct uwb_mas_bm *mas, - int first_mas, int mas_per_zone, - int zs, int ze) +void uwb_rsv_backoff_win_timer(unsigned long arg) { - struct uwb_mas_bm col; - int z; + struct uwb_drp_backoff_win *bow = (struct uwb_drp_backoff_win *)arg; + struct uwb_rc *rc = container_of(bow, struct uwb_rc, bow); + struct device *dev = &rc->uwb_dev.dev; - bitmap_zero(mas->bm, UWB_NUM_MAS); - bitmap_zero(col.bm, UWB_NUM_MAS); - bitmap_fill(col.bm, mas_per_zone); - bitmap_shift_left(col.bm, col.bm, first_mas + zs * UWB_MAS_PER_ZONE, UWB_NUM_MAS); - - for (z = zs; z <= ze; z++) { - bitmap_or(mas->bm, mas->bm, col.bm, UWB_NUM_MAS); - bitmap_shift_left(col.bm, col.bm, UWB_MAS_PER_ZONE, UWB_NUM_MAS); + bow->can_reserve_extra_mases = true; + if (bow->total_expired <= 4) { + bow->total_expired++; + } else { + /* after 4 backoff window has expired we can exit from + * the backoff procedure */ + bow->total_expired = 0; + bow->window = UWB_DRP_BACKOFF_WIN_MIN >> 1; } + dev_dbg(dev, "backoff_win_timer total_expired=%d, n=%d\n: ", bow->total_expired, bow->n); + + /* try to relocate all the "to be moved" relocations */ + uwb_rsv_handle_drp_avail_change(rc); } -/* - * Allocate some MAS for this reservation based on current local - * availability, the reservation parameters (max_mas, min_mas, - * sparsity), and the WiMedia rules for MAS allocations. - * - * Returns -EBUSY is insufficient free MAS are available. - * - * FIXME: to simplify this, only safe reservations with a single row - * component in zones 1 to 15 are tried (zone 0 is skipped to avoid - * problems with the MAS reserved for the BP). - * - * [ECMA-368] section B.2. - */ -static int uwb_rsv_alloc_mas(struct uwb_rsv *rsv) +void uwb_rsv_backoff_win_increment(struct uwb_rc *rc) { - static const int safe_mas_in_row[UWB_NUM_ZONES] = { - 8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, - }; - int n, r; - struct uwb_mas_bm mas; - bool found = false; + struct uwb_drp_backoff_win *bow = &rc->bow; + struct device *dev = &rc->uwb_dev.dev; + unsigned timeout_us; - /* - * Search all valid safe allocations until either: too few MAS - * are available; or the smallest allocation with sufficient - * MAS is found. - * - * The top of the zones are preferred, so space for larger - * allocations is available in the bottom of the zone (e.g., a - * 15 MAS allocation should start in row 14 leaving space for - * a 120 MAS allocation at row 0). - */ - for (n = safe_mas_in_row[0]; n >= 1; n--) { - int num_mas; + dev_dbg(dev, "backoff_win_increment: window=%d\n", bow->window); - num_mas = n * (UWB_NUM_ZONES - 1); - if (num_mas < rsv->min_mas) - break; - if (found && num_mas < rsv->max_mas) - break; + bow->can_reserve_extra_mases = false; - for (r = UWB_MAS_PER_ZONE-1; r >= 0; r--) { - if (safe_mas_in_row[r] < n) - continue; - uwb_rsv_gen_alloc_row(&mas, r, n, 1, UWB_NUM_ZONES); - if (uwb_drp_avail_reserve_pending(rsv->rc, &mas) == 0) { - found = true; - break; - } - } - } + if((bow->window << 1) == UWB_DRP_BACKOFF_WIN_MAX) + return; - if (!found) - return -EBUSY; + bow->window <<= 1; + bow->n = random32() & (bow->window - 1); + dev_dbg(dev, "new_window=%d, n=%d\n: ", bow->window, bow->n); - bitmap_copy(rsv->mas.bm, mas.bm, UWB_NUM_MAS); - return 0; + /* reset the timer associated variables */ + timeout_us = bow->n * UWB_SUPERFRAME_LENGTH_US; + bow->total_expired = 0; + mod_timer(&bow->timer, jiffies + usecs_to_jiffies(timeout_us)); } static void uwb_rsv_stroke_timer(struct uwb_rsv *rsv) @@ -241,13 +247,16 @@ static void uwb_rsv_stroke_timer(struct uwb_rsv *rsv) * received. */ if (rsv->is_multicast) { - if (rsv->state == UWB_RSV_STATE_O_INITIATED) + if (rsv->state == UWB_RSV_STATE_O_INITIATED + || rsv->state == UWB_RSV_STATE_O_MOVE_EXPANDING + || rsv->state == UWB_RSV_STATE_O_MOVE_COMBINING + || rsv->state == UWB_RSV_STATE_O_MOVE_REDUCING) sframes = 1; if (rsv->state == UWB_RSV_STATE_O_ESTABLISHED) sframes = 0; + } - rsv->expired = false; if (sframes > 0) { /* * Add an additional 2 superframes to account for the @@ -269,7 +278,7 @@ static void uwb_rsv_state_update(struct uwb_rsv *rsv, rsv->state = new_state; rsv->ie_valid = false; - uwb_rsv_dump(rsv); + uwb_rsv_dump("SU", rsv); uwb_rsv_stroke_timer(rsv); uwb_rsv_sched_update(rsv->rc); @@ -283,10 +292,17 @@ static void uwb_rsv_callback(struct uwb_rsv *rsv) void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state) { + struct uwb_rsv_move *mv = &rsv->mv; + if (rsv->state == new_state) { switch (rsv->state) { case UWB_RSV_STATE_O_ESTABLISHED: + case UWB_RSV_STATE_O_MOVE_EXPANDING: + case UWB_RSV_STATE_O_MOVE_COMBINING: + case UWB_RSV_STATE_O_MOVE_REDUCING: case UWB_RSV_STATE_T_ACCEPTED: + case UWB_RSV_STATE_T_EXPANDING_ACCEPTED: + case UWB_RSV_STATE_T_RESIZED: case UWB_RSV_STATE_NONE: uwb_rsv_stroke_timer(rsv); break; @@ -298,11 +314,10 @@ void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state) return; } + uwb_rsv_dump("SC", rsv); + switch (new_state) { case UWB_RSV_STATE_NONE: - uwb_drp_avail_release(rsv->rc, &rsv->mas); - if (uwb_rsv_is_owner(rsv)) - uwb_rsv_put_stream(rsv); uwb_rsv_state_update(rsv, UWB_RSV_STATE_NONE); uwb_rsv_callback(rsv); break; @@ -312,12 +327,45 @@ void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state) case UWB_RSV_STATE_O_PENDING: uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_PENDING); break; + case UWB_RSV_STATE_O_MODIFIED: + /* in the companion there are the MASes to drop */ + bitmap_andnot(rsv->mas.bm, rsv->mas.bm, mv->companion_mas.bm, UWB_NUM_MAS); + uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_MODIFIED); + break; case UWB_RSV_STATE_O_ESTABLISHED: + if (rsv->state == UWB_RSV_STATE_O_MODIFIED + || rsv->state == UWB_RSV_STATE_O_MOVE_REDUCING) { + uwb_drp_avail_release(rsv->rc, &mv->companion_mas); + rsv->needs_release_companion_mas = false; + } uwb_drp_avail_reserve(rsv->rc, &rsv->mas); uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_ESTABLISHED); uwb_rsv_callback(rsv); break; + case UWB_RSV_STATE_O_MOVE_EXPANDING: + rsv->needs_release_companion_mas = true; + uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_MOVE_EXPANDING); + break; + case UWB_RSV_STATE_O_MOVE_COMBINING: + rsv->needs_release_companion_mas = false; + uwb_drp_avail_reserve(rsv->rc, &mv->companion_mas); + bitmap_or(rsv->mas.bm, rsv->mas.bm, mv->companion_mas.bm, UWB_NUM_MAS); + rsv->mas.safe += mv->companion_mas.safe; + rsv->mas.unsafe += mv->companion_mas.unsafe; + uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_MOVE_COMBINING); + break; + case UWB_RSV_STATE_O_MOVE_REDUCING: + bitmap_andnot(mv->companion_mas.bm, rsv->mas.bm, mv->final_mas.bm, UWB_NUM_MAS); + rsv->needs_release_companion_mas = true; + rsv->mas.safe = mv->final_mas.safe; + rsv->mas.unsafe = mv->final_mas.unsafe; + bitmap_copy(rsv->mas.bm, mv->final_mas.bm, UWB_NUM_MAS); + bitmap_copy(rsv->mas.unsafe_bm, mv->final_mas.unsafe_bm, UWB_NUM_MAS); + uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_MOVE_REDUCING); + break; case UWB_RSV_STATE_T_ACCEPTED: + case UWB_RSV_STATE_T_RESIZED: + rsv->needs_release_companion_mas = false; uwb_drp_avail_reserve(rsv->rc, &rsv->mas); uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_ACCEPTED); uwb_rsv_callback(rsv); @@ -325,12 +373,82 @@ void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state) case UWB_RSV_STATE_T_DENIED: uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_DENIED); break; + case UWB_RSV_STATE_T_CONFLICT: + uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_CONFLICT); + break; + case UWB_RSV_STATE_T_PENDING: + uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_PENDING); + break; + case UWB_RSV_STATE_T_EXPANDING_ACCEPTED: + rsv->needs_release_companion_mas = true; + uwb_drp_avail_reserve(rsv->rc, &mv->companion_mas); + uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_EXPANDING_ACCEPTED); + break; default: dev_err(&rsv->rc->uwb_dev.dev, "unhandled state: %s (%d)\n", uwb_rsv_state_str(new_state), new_state); } } +static void uwb_rsv_handle_timeout_work(struct work_struct *work) +{ + struct uwb_rsv *rsv = container_of(work, struct uwb_rsv, + handle_timeout_work); + struct uwb_rc *rc = rsv->rc; + + mutex_lock(&rc->rsvs_mutex); + + uwb_rsv_dump("TO", rsv); + + switch (rsv->state) { + case UWB_RSV_STATE_O_INITIATED: + if (rsv->is_multicast) { + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED); + goto unlock; + } + break; + case UWB_RSV_STATE_O_MOVE_EXPANDING: + if (rsv->is_multicast) { + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_COMBINING); + goto unlock; + } + break; + case UWB_RSV_STATE_O_MOVE_COMBINING: + if (rsv->is_multicast) { + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_REDUCING); + goto unlock; + } + break; + case UWB_RSV_STATE_O_MOVE_REDUCING: + if (rsv->is_multicast) { + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED); + goto unlock; + } + break; + case UWB_RSV_STATE_O_ESTABLISHED: + if (rsv->is_multicast) + goto unlock; + break; + case UWB_RSV_STATE_T_EXPANDING_ACCEPTED: + /* + * The time out could be for the main or of the + * companion DRP, assume it's for the companion and + * drop that first. A further time out is required to + * drop the main. + */ + uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_ACCEPTED); + uwb_drp_avail_release(rsv->rc, &rsv->mv.companion_mas); + goto unlock; + default: + break; + } + + uwb_rsv_remove(rsv); + +unlock: + mutex_unlock(&rc->rsvs_mutex); +} + static struct uwb_rsv *uwb_rsv_alloc(struct uwb_rc *rc) { struct uwb_rsv *rsv; @@ -347,6 +465,7 @@ static struct uwb_rsv *uwb_rsv_alloc(struct uwb_rc *rc) rsv->timer.data = (unsigned long)rsv; rsv->rc = rc; + INIT_WORK(&rsv->handle_timeout_work, uwb_rsv_handle_timeout_work); return rsv; } @@ -381,8 +500,18 @@ EXPORT_SYMBOL_GPL(uwb_rsv_create); void uwb_rsv_remove(struct uwb_rsv *rsv) { + uwb_rsv_dump("RM", rsv); + if (rsv->state != UWB_RSV_STATE_NONE) uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE); + + if (rsv->needs_release_companion_mas) + uwb_drp_avail_release(rsv->rc, &rsv->mv.companion_mas); + uwb_drp_avail_release(rsv->rc, &rsv->mas); + + if (uwb_rsv_is_owner(rsv)) + uwb_rsv_put_stream(rsv); + del_timer_sync(&rsv->timer); uwb_dev_put(rsv->owner); if (rsv->target.type == UWB_RSV_TARGET_DEV) @@ -409,7 +538,7 @@ EXPORT_SYMBOL_GPL(uwb_rsv_destroy); * @rsv: the reservation * * The PAL should fill in @rsv's owner, target, type, max_mas, - * min_mas, sparsity and is_multicast fields. If the target is a + * min_mas, max_interval and is_multicast fields. If the target is a * uwb_dev it must be referenced. * * The reservation's callback will be called when the reservation is @@ -418,16 +547,27 @@ EXPORT_SYMBOL_GPL(uwb_rsv_destroy); int uwb_rsv_establish(struct uwb_rsv *rsv) { struct uwb_rc *rc = rsv->rc; + struct uwb_mas_bm available; int ret; mutex_lock(&rc->rsvs_mutex); - ret = uwb_rsv_get_stream(rsv); if (ret) goto out; - ret = uwb_rsv_alloc_mas(rsv); - if (ret) { + rsv->tiebreaker = random32() & 1; + /* get available mas bitmap */ + uwb_drp_available(rc, &available); + + ret = uwb_rsv_find_best_allocation(rsv, &available, &rsv->mas); + if (ret == UWB_RSV_ALLOC_NOT_FOUND) { + ret = -EBUSY; + uwb_rsv_put_stream(rsv); + goto out; + } + + ret = uwb_drp_avail_reserve_pending(rc, &rsv->mas); + if (ret != 0) { uwb_rsv_put_stream(rsv); goto out; } @@ -448,16 +588,71 @@ EXPORT_SYMBOL_GPL(uwb_rsv_establish); * @rsv: the reservation to modify * @max_mas: new maximum MAS to reserve * @min_mas: new minimum MAS to reserve - * @sparsity: new sparsity to use + * @max_interval: new max_interval to use * * FIXME: implement this once there are PALs that use it. */ -int uwb_rsv_modify(struct uwb_rsv *rsv, int max_mas, int min_mas, int sparsity) +int uwb_rsv_modify(struct uwb_rsv *rsv, int max_mas, int min_mas, int max_interval) { return -ENOSYS; } EXPORT_SYMBOL_GPL(uwb_rsv_modify); +/* + * move an already established reservation (rc->rsvs_mutex must to be + * taken when tis function is called) + */ +int uwb_rsv_try_move(struct uwb_rsv *rsv, struct uwb_mas_bm *available) +{ + struct uwb_rc *rc = rsv->rc; + struct uwb_drp_backoff_win *bow = &rc->bow; + struct device *dev = &rc->uwb_dev.dev; + struct uwb_rsv_move *mv; + int ret = 0; + + if (bow->can_reserve_extra_mases == false) + return -EBUSY; + + mv = &rsv->mv; + + if (uwb_rsv_find_best_allocation(rsv, available, &mv->final_mas) == UWB_RSV_ALLOC_FOUND) { + + if (!bitmap_equal(rsv->mas.bm, mv->final_mas.bm, UWB_NUM_MAS)) { + /* We want to move the reservation */ + bitmap_andnot(mv->companion_mas.bm, mv->final_mas.bm, rsv->mas.bm, UWB_NUM_MAS); + uwb_drp_avail_reserve_pending(rc, &mv->companion_mas); + uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_EXPANDING); + } + } else { + dev_dbg(dev, "new allocation not found\n"); + } + + return ret; +} + +/* It will try to move every reservation in state O_ESTABLISHED giving + * to the MAS allocator algorithm an availability that is the real one + * plus the allocation already established from the reservation. */ +void uwb_rsv_handle_drp_avail_change(struct uwb_rc *rc) +{ + struct uwb_drp_backoff_win *bow = &rc->bow; + struct uwb_rsv *rsv; + struct uwb_mas_bm mas; + + if (bow->can_reserve_extra_mases == false) + return; + + list_for_each_entry(rsv, &rc->reservations, rc_node) { + if (rsv->state == UWB_RSV_STATE_O_ESTABLISHED || + rsv->state == UWB_RSV_STATE_O_TO_BE_MOVED) { + uwb_drp_available(rc, &mas); + bitmap_or(mas.bm, mas.bm, rsv->mas.bm, UWB_NUM_MAS); + uwb_rsv_try_move(rsv, &mas); + } + } + +} + /** * uwb_rsv_terminate - terminate an established reservation * @rsv: the reservation to terminate @@ -546,6 +741,7 @@ static struct uwb_rsv *uwb_rsv_new_target(struct uwb_rc *rc, uwb_dev_get(rsv->owner); rsv->target.type = UWB_RSV_TARGET_DEV; rsv->target.dev = &rc->uwb_dev; + uwb_dev_get(&rc->uwb_dev); rsv->type = uwb_ie_drp_type(drp_ie); rsv->stream = uwb_ie_drp_stream_index(drp_ie); uwb_drp_ie_to_bm(&rsv->mas, drp_ie); @@ -567,11 +763,33 @@ static struct uwb_rsv *uwb_rsv_new_target(struct uwb_rc *rc, list_add_tail(&rsv->rc_node, &rc->reservations); state = rsv->state; rsv->state = UWB_RSV_STATE_NONE; - uwb_rsv_set_state(rsv, state); + + /* FIXME: do something sensible here */ + if (state == UWB_RSV_STATE_T_ACCEPTED + && uwb_drp_avail_reserve_pending(rc, &rsv->mas) == -EBUSY) { + /* FIXME: do something sensible here */ + } else { + uwb_rsv_set_state(rsv, state); + } return rsv; } +/** + * uwb_rsv_get_usable_mas - get the bitmap of the usable MAS of a reservations + * @rsv: the reservation. + * @mas: returns the available MAS. + * + * The usable MAS of a reservation may be less than the negotiated MAS + * if alien BPs are present. + */ +void uwb_rsv_get_usable_mas(struct uwb_rsv *rsv, struct uwb_mas_bm *mas) +{ + bitmap_zero(mas->bm, UWB_NUM_MAS); + bitmap_andnot(mas->bm, rsv->mas.bm, rsv->rc->cnflt_alien_bitmap.bm, UWB_NUM_MAS); +} +EXPORT_SYMBOL_GPL(uwb_rsv_get_usable_mas); + /** * uwb_rsv_find - find a reservation for a received DRP IE. * @rc: the radio controller @@ -611,8 +829,6 @@ static bool uwb_rsv_update_all(struct uwb_rc *rc) bool ie_updated = false; list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) { - if (rsv->expired) - uwb_drp_handle_timeout(rsv); if (!rsv->ie_valid) { uwb_drp_ie_update(rsv); ie_updated = true; @@ -622,9 +838,47 @@ static bool uwb_rsv_update_all(struct uwb_rc *rc) return ie_updated; } +void uwb_rsv_queue_update(struct uwb_rc *rc) +{ + unsigned long delay_us = UWB_MAS_LENGTH_US * UWB_MAS_PER_ZONE; + + queue_delayed_work(rc->rsv_workq, &rc->rsv_update_work, usecs_to_jiffies(delay_us)); +} + +/** + * uwb_rsv_sched_update - schedule an update of the DRP IEs + * @rc: the radio controller. + * + * To improve performance and ensure correctness with [ECMA-368] the + * number of SET-DRP-IE commands that are done are limited. + * + * DRP IEs update come from two sources: DRP events from the hardware + * which all occur at the beginning of the superframe ('syncronous' + * events) and reservation establishment/termination requests from + * PALs or timers ('asynchronous' events). + * + * A delayed work ensures that all the synchronous events result in + * one SET-DRP-IE command. + * + * Additional logic (the set_drp_ie_pending and rsv_updated_postponed + * flags) will prevent an asynchrous event starting a SET-DRP-IE + * command if one is currently awaiting a response. + * + * FIXME: this does leave a window where an asynchrous event can delay + * the SET-DRP-IE for a synchronous event by one superframe. + */ void uwb_rsv_sched_update(struct uwb_rc *rc) { - queue_work(rc->rsv_workq, &rc->rsv_update_work); + spin_lock(&rc->rsvs_lock); + if (!delayed_work_pending(&rc->rsv_update_work)) { + if (rc->set_drp_ie_pending > 0) { + rc->set_drp_ie_pending++; + goto unlock; + } + uwb_rsv_queue_update(rc); + } +unlock: + spin_unlock(&rc->rsvs_lock); } /* @@ -633,7 +887,8 @@ void uwb_rsv_sched_update(struct uwb_rc *rc) */ static void uwb_rsv_update_work(struct work_struct *work) { - struct uwb_rc *rc = container_of(work, struct uwb_rc, rsv_update_work); + struct uwb_rc *rc = container_of(work, struct uwb_rc, + rsv_update_work.work); bool ie_updated; mutex_lock(&rc->rsvs_mutex); @@ -645,18 +900,34 @@ static void uwb_rsv_update_work(struct work_struct *work) ie_updated = true; } - if (ie_updated) + if (ie_updated && (rc->set_drp_ie_pending == 0)) uwb_rc_send_all_drp_ie(rc); mutex_unlock(&rc->rsvs_mutex); } +static void uwb_rsv_alien_bp_work(struct work_struct *work) +{ + struct uwb_rc *rc = container_of(work, struct uwb_rc, + rsv_alien_bp_work.work); + struct uwb_rsv *rsv; + + mutex_lock(&rc->rsvs_mutex); + + list_for_each_entry(rsv, &rc->reservations, rc_node) { + if (rsv->type != UWB_DRP_TYPE_ALIEN_BP) { + rsv->callback(rsv); + } + } + + mutex_unlock(&rc->rsvs_mutex); +} + static void uwb_rsv_timer(unsigned long arg) { struct uwb_rsv *rsv = (struct uwb_rsv *)arg; - rsv->expired = true; - uwb_rsv_sched_update(rsv->rc); + queue_work(rsv->rc->rsv_workq, &rsv->handle_timeout_work); } /** @@ -673,16 +944,27 @@ void uwb_rsv_remove_all(struct uwb_rc *rc) list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) { uwb_rsv_remove(rsv); } + /* Cancel any postponed update. */ + rc->set_drp_ie_pending = 0; mutex_unlock(&rc->rsvs_mutex); - cancel_work_sync(&rc->rsv_update_work); + cancel_delayed_work_sync(&rc->rsv_update_work); } void uwb_rsv_init(struct uwb_rc *rc) { INIT_LIST_HEAD(&rc->reservations); + INIT_LIST_HEAD(&rc->cnflt_alien_list); mutex_init(&rc->rsvs_mutex); - INIT_WORK(&rc->rsv_update_work, uwb_rsv_update_work); + spin_lock_init(&rc->rsvs_lock); + INIT_DELAYED_WORK(&rc->rsv_update_work, uwb_rsv_update_work); + INIT_DELAYED_WORK(&rc->rsv_alien_bp_work, uwb_rsv_alien_bp_work); + rc->bow.can_reserve_extra_mases = true; + rc->bow.total_expired = 0; + rc->bow.window = UWB_DRP_BACKOFF_WIN_MIN >> 1; + init_timer(&rc->bow.timer); + rc->bow.timer.function = uwb_rsv_backoff_win_timer; + rc->bow.timer.data = (unsigned long)&rc->bow; bitmap_complement(rc->uwb_dev.streams, rc->uwb_dev.streams, UWB_NUM_STREAMS); } diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c index a6debb9baf3..89b2e6a7214 100644 --- a/drivers/uwb/uwb-debug.c +++ b/drivers/uwb/uwb-debug.c @@ -82,29 +82,21 @@ struct uwb_dbg { struct dentry *reservations_f; struct dentry *accept_f; struct dentry *drp_avail_f; + spinlock_t list_lock; }; static struct dentry *root_dir; static void uwb_dbg_rsv_cb(struct uwb_rsv *rsv) { - struct uwb_rc *rc = rsv->rc; - struct device *dev = &rc->uwb_dev.dev; - struct uwb_dev_addr devaddr; - char owner[UWB_ADDR_STRSIZE], target[UWB_ADDR_STRSIZE]; - - uwb_dev_addr_print(owner, sizeof(owner), &rsv->owner->dev_addr); - if (rsv->target.type == UWB_RSV_TARGET_DEV) - devaddr = rsv->target.dev->dev_addr; - else - devaddr = rsv->target.devaddr; - uwb_dev_addr_print(target, sizeof(target), &devaddr); + struct uwb_dbg *dbg = rsv->pal_priv; - dev_dbg(dev, "debug: rsv %s -> %s: %s\n", - owner, target, uwb_rsv_state_str(rsv->state)); + uwb_rsv_dump("debug", rsv); if (rsv->state == UWB_RSV_STATE_NONE) { + spin_lock(&dbg->list_lock); list_del(&rsv->pal_node); + spin_unlock(&dbg->list_lock); uwb_rsv_destroy(rsv); } } @@ -128,20 +120,21 @@ static int cmd_rsv_establish(struct uwb_rc *rc, return -ENOMEM; } - rsv->owner = &rc->uwb_dev; - rsv->target.type = UWB_RSV_TARGET_DEV; - rsv->target.dev = target; - rsv->type = cmd->type; - rsv->max_mas = cmd->max_mas; - rsv->min_mas = cmd->min_mas; - rsv->sparsity = cmd->sparsity; + rsv->target.type = UWB_RSV_TARGET_DEV; + rsv->target.dev = target; + rsv->type = cmd->type; + rsv->max_mas = cmd->max_mas; + rsv->min_mas = cmd->min_mas; + rsv->max_interval = cmd->max_interval; ret = uwb_rsv_establish(rsv); if (ret) uwb_rsv_destroy(rsv); - else + else { + spin_lock(&(rc->dbg)->list_lock); list_add_tail(&rsv->pal_node, &rc->dbg->rsvs); - + spin_unlock(&(rc->dbg)->list_lock); + } return ret; } @@ -151,17 +144,24 @@ static int cmd_rsv_terminate(struct uwb_rc *rc, struct uwb_rsv *rsv, *found = NULL; int i = 0; + spin_lock(&(rc->dbg)->list_lock); + list_for_each_entry(rsv, &rc->dbg->rsvs, pal_node) { if (i == cmd->index) { found = rsv; + uwb_rsv_get(found); break; } i++; } + + spin_unlock(&(rc->dbg)->list_lock); + if (!found) return -EINVAL; uwb_rsv_terminate(found); + uwb_rsv_put(found); return 0; } @@ -191,7 +191,7 @@ static ssize_t command_write(struct file *file, const char __user *buf, struct uwb_rc *rc = file->private_data; struct uwb_dbg_cmd cmd; int ret = 0; - + if (len != sizeof(struct uwb_dbg_cmd)) return -EINVAL; @@ -325,7 +325,9 @@ static void uwb_dbg_new_rsv(struct uwb_pal *pal, struct uwb_rsv *rsv) struct uwb_dbg *dbg = container_of(pal, struct uwb_dbg, pal); if (dbg->accept) { + spin_lock(&dbg->list_lock); list_add_tail(&rsv->pal_node, &dbg->rsvs); + spin_unlock(&dbg->list_lock); uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, dbg); } } @@ -341,6 +343,7 @@ void uwb_dbg_add_rc(struct uwb_rc *rc) return; INIT_LIST_HEAD(&rc->dbg->rsvs); + spin_lock_init(&(rc->dbg)->list_lock); uwb_pal_init(&rc->dbg->pal); rc->dbg->pal.rc = rc; diff --git a/drivers/uwb/uwb-internal.h b/drivers/uwb/uwb-internal.h index f0f21f406bf..d5bcfc1c227 100644 --- a/drivers/uwb/uwb-internal.h +++ b/drivers/uwb/uwb-internal.h @@ -92,6 +92,12 @@ extern const char *uwb_rc_strerror(unsigned code); struct uwb_rc_neh; +extern int uwb_rc_cmd_async(struct uwb_rc *rc, const char *cmd_name, + struct uwb_rccb *cmd, size_t cmd_size, + u8 expected_type, u16 expected_event, + uwb_rc_cmd_cb_f cb, void *arg); + + void uwb_rc_neh_create(struct uwb_rc *rc); void uwb_rc_neh_destroy(struct uwb_rc *rc); @@ -106,7 +112,69 @@ void uwb_rc_neh_put(struct uwb_rc_neh *neh); extern int uwb_est_create(void); extern void uwb_est_destroy(void); +/* + * UWB conflicting alien reservations + */ +struct uwb_cnflt_alien { + struct uwb_rc *rc; + struct list_head rc_node; + struct uwb_mas_bm mas; + struct timer_list timer; + struct work_struct cnflt_update_work; +}; + +enum uwb_uwb_rsv_alloc_result { + UWB_RSV_ALLOC_FOUND = 0, + UWB_RSV_ALLOC_NOT_FOUND, +}; + +enum uwb_rsv_mas_status { + UWB_RSV_MAS_NOT_AVAIL = 1, + UWB_RSV_MAS_SAFE, + UWB_RSV_MAS_UNSAFE, +}; + +struct uwb_rsv_col_set_info { + unsigned char start_col; + unsigned char interval; + unsigned char safe_mas_per_col; + unsigned char unsafe_mas_per_col; +}; + +struct uwb_rsv_col_info { + unsigned char max_avail_safe; + unsigned char max_avail_unsafe; + unsigned char highest_mas[UWB_MAS_PER_ZONE]; + struct uwb_rsv_col_set_info csi; +}; + +struct uwb_rsv_row_info { + unsigned char avail[UWB_MAS_PER_ZONE]; + unsigned char free_rows; + unsigned char used_rows; +}; + +/* + * UWB find allocation + */ +struct uwb_rsv_alloc_info { + unsigned char bm[UWB_MAS_PER_ZONE * UWB_NUM_ZONES]; + struct uwb_rsv_col_info ci[UWB_NUM_ZONES]; + struct uwb_rsv_row_info ri; + struct uwb_mas_bm *not_available; + struct uwb_mas_bm *result; + int min_mas; + int max_mas; + int max_interval; + int total_allocated_mases; + int safe_allocated_mases; + int unsafe_allocated_mases; + int interval; +}; +int uwb_rsv_find_best_allocation(struct uwb_rsv *rsv, struct uwb_mas_bm *available, + struct uwb_mas_bm *result); +void uwb_rsv_handle_drp_avail_change(struct uwb_rc *rc); /* * UWB Events & management daemon */ @@ -254,18 +322,28 @@ void uwb_rsv_init(struct uwb_rc *rc); int uwb_rsv_setup(struct uwb_rc *rc); void uwb_rsv_cleanup(struct uwb_rc *rc); void uwb_rsv_remove_all(struct uwb_rc *rc); +void uwb_rsv_get(struct uwb_rsv *rsv); +void uwb_rsv_put(struct uwb_rsv *rsv); +bool uwb_rsv_has_two_drp_ies(struct uwb_rsv *rsv); +void uwb_rsv_dump(char *text, struct uwb_rsv *rsv); +int uwb_rsv_try_move(struct uwb_rsv *rsv, struct uwb_mas_bm *available); +void uwb_rsv_backoff_win_timer(unsigned long arg); +void uwb_rsv_backoff_win_increment(struct uwb_rc *rc); +int uwb_rsv_status(struct uwb_rsv *rsv); +int uwb_rsv_companion_status(struct uwb_rsv *rsv); void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state); void uwb_rsv_remove(struct uwb_rsv *rsv); struct uwb_rsv *uwb_rsv_find(struct uwb_rc *rc, struct uwb_dev *src, struct uwb_ie_drp *drp_ie); void uwb_rsv_sched_update(struct uwb_rc *rc); +void uwb_rsv_queue_update(struct uwb_rc *rc); -void uwb_drp_handle_timeout(struct uwb_rsv *rsv); int uwb_drp_ie_update(struct uwb_rsv *rsv); void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie); void uwb_drp_avail_init(struct uwb_rc *rc); +void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail); int uwb_drp_avail_reserve_pending(struct uwb_rc *rc, struct uwb_mas_bm *mas); void uwb_drp_avail_reserve(struct uwb_rc *rc, struct uwb_mas_bm *mas); void uwb_drp_avail_release(struct uwb_rc *rc, struct uwb_mas_bm *mas); -- cgit v1.2.3 From 671e470ed04865ca148b83f46319d14547481340 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Fri, 12 Dec 2008 13:23:24 +0000 Subject: uwb: fix oops when terminating an already terminated reservation Calling uwb_rsv_terminate() on a reservation already in UWB_RSV_STATE_NONE should do nothing. Signed-off-by: David Vrabel --- drivers/uwb/rsv.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/rsv.c b/drivers/uwb/rsv.c index 165aec6a8f9..ec6eecb32f3 100644 --- a/drivers/uwb/rsv.c +++ b/drivers/uwb/rsv.c @@ -669,7 +669,8 @@ void uwb_rsv_terminate(struct uwb_rsv *rsv) mutex_lock(&rc->rsvs_mutex); - uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE); + if (rsv->state != UWB_RSV_STATE_NONE) + uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE); mutex_unlock(&rc->rsvs_mutex); } -- cgit v1.2.3 From 02f11ee181baa562df23e105ba930902f0d0b1bf Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Fri, 12 Dec 2008 13:28:48 +0000 Subject: uwb: fix memory leak in uwb_rc_notif() Don't leak memory in uwb_rc_notif() if certain non-standard events are received. Signed-off-by: David Vrabel --- drivers/uwb/neh.c | 19 +------------------ 1 file changed, 1 insertion(+), 18 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/neh.c b/drivers/uwb/neh.c index 48b4ece1a62..6df18eda1fd 100644 --- a/drivers/uwb/neh.c +++ b/drivers/uwb/neh.c @@ -349,7 +349,7 @@ struct uwb_rc_neh *uwb_rc_neh_lookup(struct uwb_rc *rc, } -/** +/* * Process notifications coming from the radio control interface * * @rc: UWB Radio Control Interface descriptor @@ -401,23 +401,6 @@ void uwb_rc_notif(struct uwb_rc *rc, struct uwb_rceb *rceb, ssize_t size) uwb_evt->notif.size = size; uwb_evt->notif.rceb = rceb; - switch (le16_to_cpu(rceb->wEvent)) { - /* Trap some vendor specific events - * - * FIXME: move this to handling in ptc-est, where we - * register a NULL event handler for these two guys - * using the Intel IDs. - */ - case 0x0103: - dev_info(dev, "FIXME: DEVICE ADD\n"); - return; - case 0x0104: - dev_info(dev, "FIXME: DEVICE RM\n"); - return; - default: - break; - } - uwbd_event_queue(uwb_evt); } -- cgit v1.2.3 From bce83697c5fe84a7a5d38c96fbbe43b4bc028c3e Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 22 Dec 2008 18:22:50 +0000 Subject: uwb: use dev_dbg() for debug messages Instead of the home-grown d_fnstart(), d_fnend() and d_printf() macros, use dev_dbg() or remove the message entirely. Signed-off-by: David Vrabel --- drivers/uwb/beacon.c | 10 +-- drivers/uwb/est.c | 14 +-- drivers/uwb/hwa-rc.c | 30 ++----- drivers/uwb/i1480/dfu/dfu.c | 10 +-- drivers/uwb/i1480/dfu/mac.c | 18 ---- drivers/uwb/i1480/dfu/usb.c | 26 ------ drivers/uwb/i1480/i1480u-wlp/rx.c | 25 ++---- drivers/uwb/i1480/i1480u-wlp/tx.c | 66 ++------------ drivers/uwb/lc-dev.c | 21 +---- drivers/uwb/neh.c | 7 -- drivers/uwb/reset.c | 2 - drivers/uwb/umc-dev.c | 8 -- drivers/uwb/uwbd.c | 74 +++++++--------- drivers/uwb/whc-rc.c | 53 ++--------- drivers/uwb/wlp/eda.c | 33 +------ drivers/uwb/wlp/messages.c | 181 ++------------------------------------ drivers/uwb/wlp/sysfs.c | 2 +- drivers/uwb/wlp/txrx.c | 37 ++------ drivers/uwb/wlp/wlp-lc.c | 61 +++---------- drivers/uwb/wlp/wss-lc.c | 130 ++++----------------------- 20 files changed, 117 insertions(+), 691 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/beacon.c b/drivers/uwb/beacon.c index d9c60cb9499..0315093e221 100644 --- a/drivers/uwb/beacon.c +++ b/drivers/uwb/beacon.c @@ -22,19 +22,16 @@ * * FIXME: docs */ - #include #include #include #include #include #include -#include "uwb-internal.h" -#define D_LOCAL 0 -#include +#include "uwb-internal.h" -/** Start Beaconing command structure */ +/* Start Beaconing command structure */ struct uwb_rc_cmd_start_beacon { struct uwb_rccb rccb; __le16 wBPSTOffset; @@ -176,9 +173,6 @@ struct uwb_beca_e *__uwb_beca_find_bydev(struct uwb_rc *rc, { struct uwb_beca_e *bce, *next; list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) { - d_printf(6, NULL, "looking for addr %02x:%02x in %02x:%02x\n", - dev_addr->data[0], dev_addr->data[1], - bce->dev_addr.data[0], bce->dev_addr.data[1]); if (!memcmp(&bce->dev_addr, dev_addr, sizeof(bce->dev_addr))) goto out; } diff --git a/drivers/uwb/est.c b/drivers/uwb/est.c index 5fe566b7c84..328fcc2b609 100644 --- a/drivers/uwb/est.c +++ b/drivers/uwb/est.c @@ -40,10 +40,8 @@ * uwb_est_get_size() */ #include -#define D_LOCAL 0 -#include -#include "uwb-internal.h" +#include "uwb-internal.h" struct uwb_est { u16 type_event_high; @@ -52,7 +50,6 @@ struct uwb_est { const struct uwb_est_entry *entry; }; - static struct uwb_est *uwb_est; static u8 uwb_est_size; static u8 uwb_est_used; @@ -440,21 +437,12 @@ ssize_t uwb_est_find_size(struct uwb_rc *rc, const struct uwb_rceb *rceb, u8 *ptr = (u8 *) rceb; read_lock_irqsave(&uwb_est_lock, flags); - d_printf(2, dev, "Size query for event 0x%02x/%04x/%02x," - " buffer size %ld\n", - (unsigned) rceb->bEventType, - (unsigned) le16_to_cpu(rceb->wEvent), - (unsigned) rceb->bEventContext, - (long) rceb_size); size = -ENOSPC; if (rceb_size < sizeof(*rceb)) goto out; event = le16_to_cpu(rceb->wEvent); type_event_high = rceb->bEventType << 8 | (event & 0xff00) >> 8; for (itr = 0; itr < uwb_est_used; itr++) { - d_printf(3, dev, "Checking EST 0x%04x/%04x/%04x\n", - uwb_est[itr].type_event_high, uwb_est[itr].vendor, - uwb_est[itr].product); if (uwb_est[itr].type_event_high != type_event_high) continue; size = uwb_est_get_size(rc, &uwb_est[itr], diff --git a/drivers/uwb/hwa-rc.c b/drivers/uwb/hwa-rc.c index 158e98d08af..559f8784acf 100644 --- a/drivers/uwb/hwa-rc.c +++ b/drivers/uwb/hwa-rc.c @@ -57,9 +57,8 @@ #include #include #include + #include "uwb-internal.h" -#define D_LOCAL 1 -#include /* The device uses commands and events from the WHCI specification, although * reporting itself as WUSB compliant. */ @@ -630,17 +629,13 @@ void hwarc_neep_cb(struct urb *urb) switch (result = urb->status) { case 0: - d_printf(3, dev, "NEEP: receive stat %d, %zu bytes\n", - urb->status, (size_t)urb->actual_length); uwb_rc_neh_grok(hwarc->uwb_rc, urb->transfer_buffer, urb->actual_length); break; case -ECONNRESET: /* Not an error, but a controlled situation; */ case -ENOENT: /* (we killed the URB)...so, no broadcast */ - d_printf(2, dev, "NEEP: URB reset/noent %d\n", urb->status); goto out; case -ESHUTDOWN: /* going away! */ - d_printf(2, dev, "NEEP: URB down %d\n", urb->status); goto out; default: /* On general errors, retry unless it gets ugly */ if (edc_inc(&hwarc->neep_edc, EDC_MAX_ERRORS, @@ -649,7 +644,6 @@ void hwarc_neep_cb(struct urb *urb) dev_err(dev, "NEEP: URB error %d\n", urb->status); } result = usb_submit_urb(urb, GFP_ATOMIC); - d_printf(3, dev, "NEEP: submit %d\n", result); if (result < 0) { dev_err(dev, "NEEP: Can't resubmit URB (%d) resetting device\n", result); @@ -758,11 +752,11 @@ static int hwarc_get_version(struct uwb_rc *rc) itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength); while (itr_size >= sizeof(*hdr)) { hdr = (struct usb_descriptor_header *) itr; - d_printf(3, dev, "Extra device descriptor: " - "type %02x/%u bytes @ %zu (%zu left)\n", - hdr->bDescriptorType, hdr->bLength, - (itr - usb_dev->rawdescriptors[actconfig_idx]), - itr_size); + dev_dbg(dev, "Extra device descriptor: " + "type %02x/%u bytes @ %zu (%zu left)\n", + hdr->bDescriptorType, hdr->bLength, + (itr - usb_dev->rawdescriptors[actconfig_idx]), + itr_size); if (hdr->bDescriptorType == USB_DT_CS_RADIO_CONTROL) goto found; itr += hdr->bLength; @@ -794,8 +788,7 @@ found: goto error; } rc->version = version; - d_printf(3, dev, "Device supports WUSB protocol version 0x%04x \n", - rc->version); + dev_dbg(dev, "Device supports WUSB protocol version 0x%04x \n", rc->version); result = 0; error: return result; @@ -876,7 +869,6 @@ static void hwarc_disconnect(struct usb_interface *iface) uwb_rc_rm(uwb_rc); usb_put_intf(hwarc->usb_iface); usb_put_dev(hwarc->usb_dev); - d_printf(1, &hwarc->usb_iface->dev, "freed hwarc %p\n", hwarc); kfree(hwarc); uwb_rc_put(uwb_rc); /* when creating the device, refcount = 1 */ } @@ -924,13 +916,7 @@ static struct usb_driver hwarc_driver = { static int __init hwarc_driver_init(void) { - int result; - result = usb_register(&hwarc_driver); - if (result < 0) - printk(KERN_ERR "HWA-RC: Cannot register USB driver: %d\n", - result); - return result; - + return usb_register(&hwarc_driver); } module_init(hwarc_driver_init); diff --git a/drivers/uwb/i1480/dfu/dfu.c b/drivers/uwb/i1480/dfu/dfu.c index 9097b3b3038..da7b1d08003 100644 --- a/drivers/uwb/i1480/dfu/dfu.c +++ b/drivers/uwb/i1480/dfu/dfu.c @@ -34,10 +34,7 @@ #include #include -#define D_LOCAL 0 -#include - -/** +/* * i1480_rceb_check - Check RCEB for expected field values * @i1480: pointer to device for which RCEB is being checked * @rceb: RCEB being checked @@ -83,7 +80,7 @@ int i1480_rceb_check(const struct i1480 *i1480, const struct uwb_rceb *rceb, EXPORT_SYMBOL_GPL(i1480_rceb_check); -/** +/* * Execute a Radio Control Command * * Command data has to be in i1480->cmd_buf. @@ -101,7 +98,6 @@ ssize_t i1480_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size, u8 expected_type = reply->bEventType; u8 context; - d_fnstart(3, i1480->dev, "(%p, %s, %zu)\n", i1480, cmd_name, cmd_size); init_completion(&i1480->evt_complete); i1480->evt_result = -EINPROGRESS; do { @@ -150,8 +146,6 @@ ssize_t i1480_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size, result = i1480_rceb_check(i1480, i1480->evt_buf, cmd_name, context, expected_type, expected_event); error: - d_fnend(3, i1480->dev, "(%p, %s, %zu) = %zd\n", - i1480, cmd_name, cmd_size, result); return result; } EXPORT_SYMBOL_GPL(i1480_cmd); diff --git a/drivers/uwb/i1480/dfu/mac.c b/drivers/uwb/i1480/dfu/mac.c index 2e4d8f07c16..694d0daf88a 100644 --- a/drivers/uwb/i1480/dfu/mac.c +++ b/drivers/uwb/i1480/dfu/mac.c @@ -31,9 +31,6 @@ #include #include "i1480-dfu.h" -#define D_LOCAL 0 -#include - /* * Descriptor for a continuous segment of MAC fw data */ @@ -184,10 +181,6 @@ ssize_t i1480_fw_cmp(struct i1480 *i1480, struct fw_hdr *hdr) } if (memcmp(i1480->cmd_buf, bin + src_itr, result)) { u8 *buf = i1480->cmd_buf; - d_printf(2, i1480->dev, - "original data @ %p + %u, %zu bytes\n", - bin, src_itr, result); - d_dump(4, i1480->dev, bin + src_itr, result); for (cnt = 0; cnt < result; cnt++) if (bin[src_itr + cnt] != buf[cnt]) { dev_err(i1480->dev, "byte failed at " @@ -224,7 +217,6 @@ int mac_fw_hdrs_push(struct i1480 *i1480, struct fw_hdr *hdr, struct fw_hdr *hdr_itr; int verif_retry_count; - d_fnstart(3, dev, "(%p, %p)\n", i1480, hdr); /* Now, header by header, push them to the hw */ for (hdr_itr = hdr; hdr_itr != NULL; hdr_itr = hdr_itr->next) { verif_retry_count = 0; @@ -264,7 +256,6 @@ retry: break; } } - d_fnend(3, dev, "(%zd)\n", result); return result; } @@ -337,11 +328,9 @@ int __mac_fw_upload(struct i1480 *i1480, const char *fw_name, const struct firmware *fw; struct fw_hdr *fw_hdrs; - d_fnstart(3, i1480->dev, "(%p, %s, %s)\n", i1480, fw_name, fw_tag); result = request_firmware(&fw, fw_name, i1480->dev); if (result < 0) /* Up to caller to complain on -ENOENT */ goto out; - d_printf(3, i1480->dev, "%s fw '%s': uploading\n", fw_tag, fw_name); result = fw_hdrs_load(i1480, &fw_hdrs, fw->data, fw->size); if (result < 0) { dev_err(i1480->dev, "%s fw '%s': failed to parse firmware " @@ -363,8 +352,6 @@ out_hdrs_release: out_release: release_firmware(fw); out: - d_fnend(3, i1480->dev, "(%p, %s, %s) = %d\n", i1480, fw_name, fw_tag, - result); return result; } @@ -433,7 +420,6 @@ int i1480_fw_is_running_q(struct i1480 *i1480) int result; u32 *val = (u32 *) i1480->cmd_buf; - d_fnstart(3, i1480->dev, "(i1480 %p)\n", i1480); for (cnt = 0; cnt < 10; cnt++) { msleep(100); result = i1480->read(i1480, 0x80080000, 4); @@ -447,7 +433,6 @@ int i1480_fw_is_running_q(struct i1480 *i1480) dev_err(i1480->dev, "Timed out waiting for fw to start\n"); result = -ETIMEDOUT; out: - d_fnend(3, i1480->dev, "(i1480 %p) = %d\n", i1480, result); return result; } @@ -467,7 +452,6 @@ int i1480_mac_fw_upload(struct i1480 *i1480) int result = 0, deprecated_name = 0; struct i1480_rceb *rcebe = (void *) i1480->evt_buf; - d_fnstart(3, i1480->dev, "(%p)\n", i1480); result = __mac_fw_upload(i1480, i1480->mac_fw_name, "MAC"); if (result == -ENOENT) { result = __mac_fw_upload(i1480, i1480->mac_fw_name_deprecate, @@ -501,7 +485,6 @@ int i1480_mac_fw_upload(struct i1480 *i1480) dev_err(i1480->dev, "MAC fw '%s': initialization event returns " "wrong size (%zu bytes vs %zu needed)\n", i1480->mac_fw_name, i1480->evt_result, sizeof(*rcebe)); - dump_bytes(i1480->dev, rcebe, min(i1480->evt_result, (ssize_t)32)); goto error_size; } result = -EIO; @@ -522,6 +505,5 @@ error_fw_not_running: error_init_timeout: error_size: error_setup: - d_fnend(3, i1480->dev, "(i1480 %p) = %d\n", i1480, result); return result; } diff --git a/drivers/uwb/i1480/dfu/usb.c b/drivers/uwb/i1480/dfu/usb.c index b7ea525fc06..686795e9719 100644 --- a/drivers/uwb/i1480/dfu/usb.c +++ b/drivers/uwb/i1480/dfu/usb.c @@ -43,10 +43,6 @@ #include #include "i1480-dfu.h" -#define D_LOCAL 0 -#include - - struct i1480_usb { struct i1480 i1480; struct usb_device *usb_dev; @@ -117,8 +113,6 @@ int i1480_usb_write(struct i1480 *i1480, u32 memory_address, struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480); size_t buffer_size, itr = 0; - d_fnstart(3, i1480->dev, "(%p, 0x%08x, %p, %zu)\n", - i1480, memory_address, buffer, size); BUG_ON(size & 0x3); /* Needs to be a multiple of 4 */ while (size > 0) { buffer_size = size < i1480->buf_size ? size : i1480->buf_size; @@ -131,16 +125,10 @@ int i1480_usb_write(struct i1480 *i1480, u32 memory_address, i1480->cmd_buf, buffer_size, 100 /* FIXME: arbitrary */); if (result < 0) break; - d_printf(3, i1480->dev, - "wrote @ 0x%08x %u bytes (of %zu bytes requested)\n", - memory_address, result, buffer_size); - d_dump(4, i1480->dev, i1480->cmd_buf, result); itr += result; memory_address += result; size -= result; } - d_fnend(3, i1480->dev, "(%p, 0x%08x, %p, %zu) = %d\n", - i1480, memory_address, buffer, size, result); return result; } @@ -165,8 +153,6 @@ int i1480_usb_read(struct i1480 *i1480, u32 addr, size_t size) size_t itr, read_size = i1480->buf_size; struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480); - d_fnstart(3, i1480->dev, "(%p, 0x%08x, %zu)\n", - i1480, addr, size); BUG_ON(size > i1480->buf_size); BUG_ON(size & 0x3); /* Needs to be a multiple of 4 */ BUG_ON(read_size > 512); @@ -200,10 +186,6 @@ int i1480_usb_read(struct i1480 *i1480, u32 addr, size_t size) } result = bytes; out: - d_fnend(3, i1480->dev, "(%p, 0x%08x, %zu) = %zd\n", - i1480, addr, size, result); - if (result > 0) - d_dump(4, i1480->dev, i1480->cmd_buf, result); return result; } @@ -259,7 +241,6 @@ int i1480_usb_wait_init_done(struct i1480 *i1480) struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480); struct usb_endpoint_descriptor *epd; - d_fnstart(3, dev, "(%p)\n", i1480); init_completion(&i1480->evt_complete); i1480->evt_result = -EINPROGRESS; epd = &i1480_usb->usb_iface->cur_altsetting->endpoint[0].desc; @@ -281,14 +262,12 @@ int i1480_usb_wait_init_done(struct i1480 *i1480) goto error_wait; } usb_kill_urb(i1480_usb->neep_urb); - d_fnend(3, dev, "(%p) = 0\n", i1480); return 0; error_wait: usb_kill_urb(i1480_usb->neep_urb); error_submit: i1480->evt_result = result; - d_fnend(3, dev, "(%p) = %d\n", i1480, result); return result; } @@ -319,7 +298,6 @@ int i1480_usb_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size) struct uwb_rccb *cmd = i1480->cmd_buf; u8 iface_no; - d_fnstart(3, dev, "(%p, %s, %zu)\n", i1480, cmd_name, cmd_size); /* Post a read on the notification & event endpoint */ iface_no = i1480_usb->usb_iface->cur_altsetting->desc.bInterfaceNumber; epd = &i1480_usb->usb_iface->cur_altsetting->endpoint[0].desc; @@ -347,15 +325,11 @@ int i1480_usb_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size) cmd_name, result); goto error_submit_ep0; } - d_fnend(3, dev, "(%p, %s, %zu) = %d\n", - i1480, cmd_name, cmd_size, result); return result; error_submit_ep0: usb_kill_urb(i1480_usb->neep_urb); error_submit_ep1: - d_fnend(3, dev, "(%p, %s, %zu) = %d\n", - i1480, cmd_name, cmd_size, result); return result; } diff --git a/drivers/uwb/i1480/i1480u-wlp/rx.c b/drivers/uwb/i1480/i1480u-wlp/rx.c index 9fc035354a7..34f4cf9a7d3 100644 --- a/drivers/uwb/i1480/i1480u-wlp/rx.c +++ b/drivers/uwb/i1480/i1480u-wlp/rx.c @@ -68,11 +68,7 @@ #include #include "i1480u-wlp.h" -#define D_LOCAL 0 -#include - - -/** +/* * Setup the RX context * * Each URB is provided with a transfer_buffer that is the data field @@ -129,7 +125,7 @@ error: } -/** Release resources associated to the rx context */ +/* Release resources associated to the rx context */ void i1480u_rx_release(struct i1480u *i1480u) { int cnt; @@ -155,7 +151,7 @@ void i1480u_rx_unlink_urbs(struct i1480u *i1480u) } } -/** Fix an out-of-sequence packet */ +/* Fix an out-of-sequence packet */ #define i1480u_fix(i1480u, msg...) \ do { \ if (printk_ratelimit()) \ @@ -166,7 +162,7 @@ do { \ } while (0) -/** Drop an out-of-sequence packet */ +/* Drop an out-of-sequence packet */ #define i1480u_drop(i1480u, msg...) \ do { \ if (printk_ratelimit()) \ @@ -177,7 +173,7 @@ do { \ -/** Finalizes setting up the SKB and delivers it +/* Finalizes setting up the SKB and delivers it * * We first pass the incoming frame to WLP substack for verification. It * may also be a WLP association frame in which case WLP will take over the @@ -192,18 +188,11 @@ void i1480u_skb_deliver(struct i1480u *i1480u) struct net_device *net_dev = i1480u->net_dev; struct device *dev = &i1480u->usb_iface->dev; - d_printf(6, dev, "RX delivered pre skb(%p), %u bytes\n", - i1480u->rx_skb, i1480u->rx_skb->len); - d_dump(7, dev, i1480u->rx_skb->data, i1480u->rx_skb->len); should_parse = wlp_receive_frame(dev, &i1480u->wlp, i1480u->rx_skb, &i1480u->rx_srcaddr); if (!should_parse) goto out; i1480u->rx_skb->protocol = eth_type_trans(i1480u->rx_skb, net_dev); - d_printf(5, dev, "RX delivered skb(%p), %u bytes\n", - i1480u->rx_skb, i1480u->rx_skb->len); - d_dump(7, dev, i1480u->rx_skb->data, - i1480u->rx_skb->len > 72 ? 72 : i1480u->rx_skb->len); i1480u->stats.rx_packets++; i1480u->stats.rx_bytes += i1480u->rx_untd_pkt_size; net_dev->last_rx = jiffies; @@ -216,7 +205,7 @@ out: } -/** +/* * Process a buffer of data received from the USB RX endpoint * * First fragment arrives with next or last fragment. All other fragments @@ -404,7 +393,7 @@ out: } -/** +/* * Called when an RX URB has finished receiving or has found some kind * of error condition. * diff --git a/drivers/uwb/i1480/i1480u-wlp/tx.c b/drivers/uwb/i1480/i1480u-wlp/tx.c index 3426bfb6824..39032cc3503 100644 --- a/drivers/uwb/i1480/i1480u-wlp/tx.c +++ b/drivers/uwb/i1480/i1480u-wlp/tx.c @@ -55,8 +55,6 @@ */ #include "i1480u-wlp.h" -#define D_LOCAL 5 -#include enum { /* This is only for Next and Last TX packets */ @@ -64,7 +62,7 @@ enum { - sizeof(struct untd_hdr_rst), }; -/** Free resources allocated to a i1480u tx context. */ +/* Free resources allocated to a i1480u tx context. */ static void i1480u_tx_free(struct i1480u_tx *wtx) { @@ -99,7 +97,7 @@ void i1480u_tx_unlink_urbs(struct i1480u *i1480u) } -/** +/* * Callback for a completed tx USB URB. * * TODO: @@ -149,8 +147,6 @@ void i1480u_tx_cb(struct urb *urb) <= i1480u->tx_inflight.threshold && netif_queue_stopped(net_dev) && i1480u->tx_inflight.threshold != 0) { - if (d_test(2) && printk_ratelimit()) - d_printf(2, dev, "Restart queue. \n"); netif_start_queue(net_dev); atomic_inc(&i1480u->tx_inflight.restart_count); } @@ -158,7 +154,7 @@ void i1480u_tx_cb(struct urb *urb) } -/** +/* * Given a buffer that doesn't fit in a single fragment, create an * scatter/gather structure for delivery to the USB pipe. * @@ -253,15 +249,11 @@ int i1480u_tx_create_n(struct i1480u_tx *wtx, struct sk_buff *skb, /* Now do each remaining fragment */ result = -EINVAL; while (pl_size_left > 0) { - d_printf(5, NULL, "ITR HDR: pl_size_left %zu buf_itr %zu\n", - pl_size_left, buf_itr - wtx->buf); if (buf_itr + sizeof(*untd_hdr_rst) - wtx->buf > wtx->buf_size) { printk(KERN_ERR "BUG: no space for header\n"); goto error_bug; } - d_printf(5, NULL, "ITR HDR 2: pl_size_left %zu buf_itr %zu\n", - pl_size_left, buf_itr - wtx->buf); untd_hdr_rst = buf_itr; buf_itr += sizeof(*untd_hdr_rst); if (pl_size_left > i1480u_MAX_PL_SIZE) { @@ -271,9 +263,6 @@ int i1480u_tx_create_n(struct i1480u_tx *wtx, struct sk_buff *skb, frg_pl_size = pl_size_left; untd_hdr_set_type(&untd_hdr_rst->hdr, i1480u_PKT_FRAG_LST); } - d_printf(5, NULL, - "ITR PL: pl_size_left %zu buf_itr %zu frg_pl_size %zu\n", - pl_size_left, buf_itr - wtx->buf, frg_pl_size); untd_hdr_set_rx_tx(&untd_hdr_rst->hdr, 0); untd_hdr_rst->hdr.len = cpu_to_le16(frg_pl_size); untd_hdr_rst->padding = 0; @@ -286,9 +275,6 @@ int i1480u_tx_create_n(struct i1480u_tx *wtx, struct sk_buff *skb, buf_itr += frg_pl_size; pl_itr += frg_pl_size; pl_size_left -= frg_pl_size; - d_printf(5, NULL, - "ITR PL 2: pl_size_left %zu buf_itr %zu frg_pl_size %zu\n", - pl_size_left, buf_itr - wtx->buf, frg_pl_size); } dev_kfree_skb_irq(skb); return 0; @@ -308,7 +294,7 @@ error_buf_alloc: } -/** +/* * Given a buffer that fits in a single fragment, fill out a @wtx * struct for transmitting it down the USB pipe. * @@ -346,7 +332,7 @@ int i1480u_tx_create_1(struct i1480u_tx *wtx, struct sk_buff *skb, } -/** +/* * Given a skb to transmit, massage it to become palatable for the TX pipe * * This will break the buffer in chunks smaller than @@ -425,7 +411,7 @@ error_wtx_alloc: return NULL; } -/** +/* * Actual fragmentation and transmission of frame * * @wlp: WLP substack data structure @@ -447,20 +433,12 @@ int i1480u_xmit_frame(struct wlp *wlp, struct sk_buff *skb, struct i1480u_tx *wtx; struct wlp_tx_hdr *wlp_tx_hdr; static unsigned char dev_bcast[2] = { 0xff, 0xff }; -#if 0 - int lockup = 50; -#endif - d_fnstart(6, dev, "(skb %p (%u), net_dev %p)\n", skb, skb->len, - net_dev); BUG_ON(i1480u->wlp.rc == NULL); if ((net_dev->flags & IFF_UP) == 0) goto out; result = -EBUSY; if (atomic_read(&i1480u->tx_inflight.count) >= i1480u->tx_inflight.max) { - if (d_test(2) && printk_ratelimit()) - d_printf(2, dev, "Max frames in flight " - "stopping queue.\n"); netif_stop_queue(net_dev); goto error_max_inflight; } @@ -489,21 +467,6 @@ int i1480u_xmit_frame(struct wlp *wlp, struct sk_buff *skb, wlp_tx_hdr_set_delivery_id_type(wlp_tx_hdr, i1480u->options.pca_base_priority); } -#if 0 - dev_info(dev, "TX delivering skb -> USB, %zu bytes\n", skb->len); - dump_bytes(dev, skb->data, skb->len > 72 ? 72 : skb->len); -#endif -#if 0 - /* simulates a device lockup after every lockup# packets */ - if (lockup && ((i1480u->stats.tx_packets + 1) % lockup) == 0) { - /* Simulate a dropped transmit interrupt */ - net_dev->trans_start = jiffies; - netif_stop_queue(net_dev); - dev_err(dev, "Simulate lockup at %ld\n", jiffies); - return result; - } -#endif - result = usb_submit_urb(wtx->urb, GFP_ATOMIC); /* Go baby */ if (result < 0) { dev_err(dev, "TX: cannot submit URB: %d\n", result); @@ -513,8 +476,6 @@ int i1480u_xmit_frame(struct wlp *wlp, struct sk_buff *skb, } atomic_inc(&i1480u->tx_inflight.count); net_dev->trans_start = jiffies; - d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len, - net_dev, result); return result; error_tx_urb_submit: @@ -522,13 +483,11 @@ error_tx_urb_submit: error_wtx_alloc: error_max_inflight: out: - d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len, - net_dev, result); return result; } -/** +/* * Transmit an skb Called when an skbuf has to be transmitted * * The skb is first passed to WLP substack to ensure this is a valid @@ -551,9 +510,6 @@ int i1480u_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev) struct device *dev = &i1480u->usb_iface->dev; struct uwb_dev_addr dst; - d_fnstart(6, dev, "(skb %p (%u), net_dev %p)\n", skb, skb->len, - net_dev); - BUG_ON(i1480u->wlp.rc == NULL); if ((net_dev->flags & IFF_UP) == 0) goto error; result = wlp_prepare_tx_frame(dev, &i1480u->wlp, skb, &dst); @@ -562,31 +518,25 @@ int i1480u_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev) "Dropping packet.\n", result); goto error; } else if (result == 1) { - d_printf(6, dev, "WLP will transmit frame. \n"); /* trans_start time will be set when WLP actually transmits * the frame */ goto out; } - d_printf(6, dev, "Transmitting frame. \n"); result = i1480u_xmit_frame(&i1480u->wlp, skb, &dst); if (result < 0) { dev_err(dev, "Frame TX failed (%d).\n", result); goto error; } - d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len, - net_dev, result); return NETDEV_TX_OK; error: dev_kfree_skb_any(skb); i1480u->stats.tx_dropped++; out: - d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len, - net_dev, result); return NETDEV_TX_OK; } -/** +/* * Called when a pkt transmission doesn't complete in a reasonable period * Device reset may sleep - do it outside of interrupt context (delayed) */ diff --git a/drivers/uwb/lc-dev.c b/drivers/uwb/lc-dev.c index 15f856c9689..f78087b8591 100644 --- a/drivers/uwb/lc-dev.c +++ b/drivers/uwb/lc-dev.c @@ -22,7 +22,6 @@ * * FIXME: docs */ - #include #include #include @@ -30,10 +29,6 @@ #include #include "uwb-internal.h" -#define D_LOCAL 1 -#include - - /* We initialize addresses to 0xff (invalid, as it is bcast) */ static inline void uwb_dev_addr_init(struct uwb_dev_addr *addr) { @@ -104,12 +99,9 @@ static void uwb_dev_sys_release(struct device *dev) { struct uwb_dev *uwb_dev = to_uwb_dev(dev); - d_fnstart(4, NULL, "(dev %p uwb_dev %p)\n", dev, uwb_dev); uwb_bce_put(uwb_dev->bce); - d_printf(0, &uwb_dev->dev, "uwb_dev %p freed\n", uwb_dev); memset(uwb_dev, 0x69, sizeof(*uwb_dev)); kfree(uwb_dev); - d_fnend(4, NULL, "(dev %p uwb_dev %p) = void\n", dev, uwb_dev); } /* @@ -275,12 +267,8 @@ static struct attribute_group *groups[] = { */ static int __uwb_dev_sys_add(struct uwb_dev *uwb_dev, struct device *parent_dev) { - int result; struct device *dev; - d_fnstart(4, NULL, "(uwb_dev %p parent_dev %p)\n", uwb_dev, parent_dev); - BUG_ON(parent_dev == NULL); - dev = &uwb_dev->dev; /* Device sysfs files are only useful for neighbor devices not local radio controllers. */ @@ -289,18 +277,14 @@ static int __uwb_dev_sys_add(struct uwb_dev *uwb_dev, struct device *parent_dev) dev->parent = parent_dev; dev_set_drvdata(dev, uwb_dev); - result = device_add(dev); - d_fnend(4, NULL, "(uwb_dev %p parent_dev %p) = %d\n", uwb_dev, parent_dev, result); - return result; + return device_add(dev); } static void __uwb_dev_sys_rm(struct uwb_dev *uwb_dev) { - d_fnstart(4, NULL, "(uwb_dev %p)\n", uwb_dev); dev_set_drvdata(&uwb_dev->dev, NULL); device_del(&uwb_dev->dev); - d_fnend(4, NULL, "(uwb_dev %p) = void\n", uwb_dev); } @@ -384,7 +368,6 @@ int __uwb_dev_offair(struct uwb_dev *uwb_dev, struct uwb_rc *rc) struct device *dev = &uwb_dev->dev; char macbuf[UWB_ADDR_STRSIZE], devbuf[UWB_ADDR_STRSIZE]; - d_fnstart(3, NULL, "(dev %p [uwb_dev %p], uwb_rc %p)\n", dev, uwb_dev, rc); uwb_mac_addr_print(macbuf, sizeof(macbuf), &uwb_dev->mac_addr); uwb_dev_addr_print(devbuf, sizeof(devbuf), &uwb_dev->dev_addr); dev_info(dev, "uwb device (mac %s dev %s) disconnected from %s %s\n", @@ -393,7 +376,7 @@ int __uwb_dev_offair(struct uwb_dev *uwb_dev, struct uwb_rc *rc) rc ? dev_name(rc->uwb_dev.dev.parent) : ""); uwb_dev_rm(uwb_dev); uwb_dev_put(uwb_dev); /* for the creation in _onair() */ - d_fnend(3, NULL, "(dev %p [uwb_dev %p], uwb_rc %p) = 0\n", dev, uwb_dev, rc); + return 0; } diff --git a/drivers/uwb/neh.c b/drivers/uwb/neh.c index 6df18eda1fd..0af8916d9be 100644 --- a/drivers/uwb/neh.c +++ b/drivers/uwb/neh.c @@ -86,8 +86,6 @@ #include #include "uwb-internal.h" -#define D_LOCAL 0 -#include /* * UWB Radio Controller Notification/Event Handle @@ -479,8 +477,6 @@ void uwb_rc_neh_grok(struct uwb_rc *rc, void *buf, size_t buf_size) size_t size, real_size, event_size; int needtofree; - d_fnstart(3, dev, "(rc %p buf %p %zu buf_size)\n", rc, buf, buf_size); - d_printf(2, dev, "groking event block: %zu bytes\n", buf_size); itr = buf; size = buf_size; while (size > 0) { @@ -528,10 +524,7 @@ void uwb_rc_neh_grok(struct uwb_rc *rc, void *buf, size_t buf_size) itr += real_size; size -= real_size; - d_printf(2, dev, "consumed %zd bytes, %zu left\n", - event_size, size); } - d_fnend(3, dev, "(rc %p buf %p %zu buf_size) = void\n", rc, buf, buf_size); } EXPORT_SYMBOL_GPL(uwb_rc_neh_grok); diff --git a/drivers/uwb/reset.c b/drivers/uwb/reset.c index ce8283cc809..70f8050221f 100644 --- a/drivers/uwb/reset.c +++ b/drivers/uwb/reset.c @@ -32,8 +32,6 @@ #include #include "uwb-internal.h" -#define D_LOCAL 0 -#include /** * Command result codes (WUSB1.0[T8-69]) diff --git a/drivers/uwb/umc-dev.c b/drivers/uwb/umc-dev.c index 53207e14cd8..1fc7d8270bb 100644 --- a/drivers/uwb/umc-dev.c +++ b/drivers/uwb/umc-dev.c @@ -7,8 +7,6 @@ */ #include #include -#define D_LOCAL 0 -#include static void umc_device_release(struct device *dev) { @@ -53,8 +51,6 @@ int umc_device_register(struct umc_dev *umc) { int err; - d_fnstart(3, &umc->dev, "(umc_dev %p)\n", umc); - err = request_resource(umc->resource.parent, &umc->resource); if (err < 0) { dev_err(&umc->dev, "can't allocate resource range " @@ -68,13 +64,11 @@ int umc_device_register(struct umc_dev *umc) err = device_register(&umc->dev); if (err < 0) goto error_device_register; - d_fnend(3, &umc->dev, "(umc_dev %p) = 0\n", umc); return 0; error_device_register: release_resource(&umc->resource); error_request_resource: - d_fnend(3, &umc->dev, "(umc_dev %p) = %d\n", umc, err); return err; } EXPORT_SYMBOL_GPL(umc_device_register); @@ -94,10 +88,8 @@ void umc_device_unregister(struct umc_dev *umc) if (!umc) return; dev = get_device(&umc->dev); - d_fnstart(3, dev, "(umc_dev %p)\n", umc); device_unregister(&umc->dev); release_resource(&umc->resource); - d_fnend(3, dev, "(umc_dev %p) = void\n", umc); put_device(dev); } EXPORT_SYMBOL_GPL(umc_device_unregister); diff --git a/drivers/uwb/uwbd.c b/drivers/uwb/uwbd.c index ec42ce92dbc..57bd6bfef37 100644 --- a/drivers/uwb/uwbd.c +++ b/drivers/uwb/uwbd.c @@ -68,17 +68,13 @@ * * Handler functions are called normally uwbd_evt_handle_*(). */ - #include #include #include -#include "uwb-internal.h" - -#define D_LOCAL 1 -#include +#include "uwb-internal.h" -/** +/* * UWBD Event handler function signature * * Return !0 if the event needs not to be freed (ie the handler @@ -101,9 +97,8 @@ struct uwbd_event { const char *name; }; -/** Table of handlers for and properties of the UWBD Radio Control Events */ -static -struct uwbd_event uwbd_events[] = { +/* Table of handlers for and properties of the UWBD Radio Control Events */ +static struct uwbd_event uwbd_urc_events[] = { [UWB_RC_EVT_IE_RCV] = { .handler = uwbd_evt_handle_rc_ie_rcv, .name = "IE_RECEIVED" @@ -146,23 +141,15 @@ struct uwbd_evt_type_handler { size_t size; }; -#define UWBD_EVT_TYPE_HANDLER(n,a) { \ - .name = (n), \ - .uwbd_events = (a), \ - .size = sizeof(a)/sizeof((a)[0]) \ -} - - -/** Table of handlers for each UWBD Event type. */ -static -struct uwbd_evt_type_handler uwbd_evt_type_handlers[] = { - [UWB_RC_CET_GENERAL] = UWBD_EVT_TYPE_HANDLER("RC", uwbd_events) +/* Table of handlers for each UWBD Event type. */ +static struct uwbd_evt_type_handler uwbd_urc_evt_type_handlers[] = { + [UWB_RC_CET_GENERAL] = { + .name = "URC", + .uwbd_events = uwbd_urc_events, + .size = ARRAY_SIZE(uwbd_urc_events), + }, }; -static const -size_t uwbd_evt_type_handlers_len = - sizeof(uwbd_evt_type_handlers) / sizeof(uwbd_evt_type_handlers[0]); - static const struct uwbd_event uwbd_message_handlers[] = { [UWB_EVT_MSG_RESET] = { .handler = uwbd_msg_handle_reset, @@ -170,7 +157,7 @@ static const struct uwbd_event uwbd_message_handlers[] = { }, }; -/** +/* * Handle an URC event passed to the UWB Daemon * * @evt: the event to handle @@ -190,6 +177,7 @@ static const struct uwbd_event uwbd_message_handlers[] = { static int uwbd_event_handle_urc(struct uwb_event *evt) { + int result = -EINVAL; struct uwbd_evt_type_handler *type_table; uwbd_evt_handler_f handler; u8 type, context; @@ -199,26 +187,24 @@ int uwbd_event_handle_urc(struct uwb_event *evt) event = le16_to_cpu(evt->notif.rceb->wEvent); context = evt->notif.rceb->bEventContext; - if (type > uwbd_evt_type_handlers_len) { - printk(KERN_ERR "UWBD: event type %u: unknown (too high)\n", type); - return -EINVAL; - } - type_table = &uwbd_evt_type_handlers[type]; - if (type_table->uwbd_events == NULL) { - printk(KERN_ERR "UWBD: event type %u: unknown\n", type); - return -EINVAL; - } - if (event > type_table->size) { - printk(KERN_ERR "UWBD: event %s[%u]: unknown (too high)\n", - type_table->name, event); - return -EINVAL; - } + if (type > ARRAY_SIZE(uwbd_urc_evt_type_handlers)) + goto out; + type_table = &uwbd_urc_evt_type_handlers[type]; + if (type_table->uwbd_events == NULL) + goto out; + if (event > type_table->size) + goto out; handler = type_table->uwbd_events[event].handler; - if (handler == NULL) { - printk(KERN_ERR "UWBD: event %s[%u]: unknown\n", type_table->name, event); - return -EINVAL; - } - return (*handler)(evt); + if (handler == NULL) + goto out; + + result = (*handler)(evt); +out: + if (result < 0) + dev_err(&evt->rc->uwb_dev.dev, + "UWBD: event 0x%02x/%04x/%02x, handling failed: %d\n", + type, event, context, result); + return result; } static void uwbd_event_handle_message(struct uwb_event *evt) diff --git a/drivers/uwb/whc-rc.c b/drivers/uwb/whc-rc.c index 5f00386e26c..19a1dd12921 100644 --- a/drivers/uwb/whc-rc.c +++ b/drivers/uwb/whc-rc.c @@ -48,10 +48,8 @@ #include #include #include -#include "uwb-internal.h" -#define D_LOCAL 0 -#include +#include "uwb-internal.h" /** * Descriptor for an instance of the UWB Radio Control Driver that @@ -97,13 +95,8 @@ static int whcrc_cmd(struct uwb_rc *uwb_rc, struct device *dev = &whcrc->umc_dev->dev; u32 urccmd; - d_fnstart(3, dev, "(%p, %p, %zu)\n", uwb_rc, cmd, cmd_size); - might_sleep(); - - if (cmd_size >= 4096) { - result = -E2BIG; - goto error; - } + if (cmd_size >= 4096) + return -EINVAL; /* * If the URC is halted, then the hardware has reset itself. @@ -114,16 +107,14 @@ static int whcrc_cmd(struct uwb_rc *uwb_rc, if (le_readl(whcrc->rc_base + URCSTS) & URCSTS_HALTED) { dev_err(dev, "requesting reset of halted radio controller\n"); uwb_rc_reset_all(uwb_rc); - result = -EIO; - goto error; + return -EIO; } result = wait_event_timeout(whcrc->cmd_wq, !(le_readl(whcrc->rc_base + URCCMD) & URCCMD_ACTIVE), HZ/2); if (result == 0) { dev_err(dev, "device is not ready to execute commands\n"); - result = -ETIMEDOUT; - goto error; + return -ETIMEDOUT; } memmove(whcrc->cmd_buf, cmd, cmd_size); @@ -136,10 +127,7 @@ static int whcrc_cmd(struct uwb_rc *uwb_rc, whcrc->rc_base + URCCMD); spin_unlock(&whcrc->irq_lock); -error: - d_fnend(3, dev, "(%p, %p, %zu) = %d\n", - uwb_rc, cmd, cmd_size, result); - return result; + return 0; } static int whcrc_reset(struct uwb_rc *rc) @@ -166,34 +154,25 @@ static int whcrc_reset(struct uwb_rc *rc) static void whcrc_enable_events(struct whcrc *whcrc) { - struct device *dev = &whcrc->umc_dev->dev; u32 urccmd; - d_fnstart(4, dev, "(whcrc %p)\n", whcrc); - le_writeq(whcrc->evt_dma_buf, whcrc->rc_base + URCEVTADDR); spin_lock(&whcrc->irq_lock); urccmd = le_readl(whcrc->rc_base + URCCMD) & ~URCCMD_ACTIVE; le_writel(urccmd | URCCMD_EARV, whcrc->rc_base + URCCMD); spin_unlock(&whcrc->irq_lock); - - d_fnend(4, dev, "(whcrc %p) = void\n", whcrc); } static void whcrc_event_work(struct work_struct *work) { struct whcrc *whcrc = container_of(work, struct whcrc, event_work); - struct device *dev = &whcrc->umc_dev->dev; size_t size; u64 urcevtaddr; urcevtaddr = le_readq(whcrc->rc_base + URCEVTADDR); size = urcevtaddr & URCEVTADDR_OFFSET_MASK; - d_printf(3, dev, "received %zu octet event\n", size); - d_dump(4, dev, whcrc->evt_buf, size > 32 ? 32 : size); - uwb_rc_neh_grok(whcrc->uwb_rc, whcrc->evt_buf, size); whcrc_enable_events(whcrc); } @@ -216,22 +195,15 @@ irqreturn_t whcrc_irq_cb(int irq, void *_whcrc) return IRQ_NONE; le_writel(urcsts & URCSTS_INT_MASK, whcrc->rc_base + URCSTS); - d_printf(4, dev, "acked 0x%08x, urcsts 0x%08x\n", - le_readl(whcrc->rc_base + URCSTS), urcsts); - if (urcsts & URCSTS_HSE) { dev_err(dev, "host system error -- hardware halted\n"); /* FIXME: do something sensible here */ goto out; } - if (urcsts & URCSTS_ER) { - d_printf(3, dev, "ER: event ready\n"); + if (urcsts & URCSTS_ER) schedule_work(&whcrc->event_work); - } - if (urcsts & URCSTS_RCI) { - d_printf(3, dev, "RCI: ready to execute another command\n"); + if (urcsts & URCSTS_RCI) wake_up_all(&whcrc->cmd_wq); - } out: return IRQ_HANDLED; } @@ -250,8 +222,7 @@ int whcrc_setup_rc_umc(struct whcrc *whcrc) whcrc->area = umc_dev->resource.start; whcrc->rc_len = umc_dev->resource.end - umc_dev->resource.start + 1; result = -EBUSY; - if (request_mem_region(whcrc->area, whcrc->rc_len, KBUILD_MODNAME) - == NULL) { + if (request_mem_region(whcrc->area, whcrc->rc_len, KBUILD_MODNAME) == NULL) { dev_err(dev, "can't request URC region (%zu bytes @ 0x%lx): %d\n", whcrc->rc_len, whcrc->area, result); goto error_request_region; @@ -286,8 +257,6 @@ int whcrc_setup_rc_umc(struct whcrc *whcrc) dev_err(dev, "Can't allocate evt transfer buffer\n"); goto error_evt_buffer; } - d_printf(3, dev, "UWB RC Interface: %zu bytes at 0x%p, irq %u\n", - whcrc->rc_len, whcrc->rc_base, umc_dev->irq); return 0; error_evt_buffer: @@ -396,7 +365,6 @@ int whcrc_probe(struct umc_dev *umc_dev) struct whcrc *whcrc; struct device *dev = &umc_dev->dev; - d_fnstart(3, dev, "(umc_dev %p)\n", umc_dev); result = -ENOMEM; uwb_rc = uwb_rc_alloc(); if (uwb_rc == NULL) { @@ -428,7 +396,6 @@ int whcrc_probe(struct umc_dev *umc_dev) if (result < 0) goto error_rc_add; umc_set_drvdata(umc_dev, whcrc); - d_fnend(3, dev, "(umc_dev %p) = 0\n", umc_dev); return 0; error_rc_add: @@ -438,7 +405,6 @@ error_setup_rc_umc: error_alloc: uwb_rc_put(uwb_rc); error_rc_alloc: - d_fnend(3, dev, "(umc_dev %p) = %d\n", umc_dev, result); return result; } @@ -461,7 +427,6 @@ static void whcrc_remove(struct umc_dev *umc_dev) whcrc_release_rc_umc(whcrc); kfree(whcrc); uwb_rc_put(uwb_rc); - d_printf(1, &umc_dev->dev, "freed whcrc %p\n", whcrc); } static int whcrc_pre_reset(struct umc_dev *umc) diff --git a/drivers/uwb/wlp/eda.c b/drivers/uwb/wlp/eda.c index cdfe8dfc434..0b4659e4bbd 100644 --- a/drivers/uwb/wlp/eda.c +++ b/drivers/uwb/wlp/eda.c @@ -51,9 +51,7 @@ * the tag and address of the transmitting neighbor. */ -#define D_LOCAL 5 #include -#include #include #include #include "wlp-internal.h" @@ -304,7 +302,6 @@ int wlp_eda_for_virtual(struct wlp_eda *eda, { int result = 0; struct wlp *wlp = container_of(eda, struct wlp, eda); - struct device *dev = &wlp->rc->uwb_dev.dev; struct wlp_eda_node *itr; unsigned long flags; int found = 0; @@ -313,40 +310,14 @@ int wlp_eda_for_virtual(struct wlp_eda *eda, list_for_each_entry(itr, &eda->cache, list_node) { if (!memcmp(itr->virt_addr, virt_addr, sizeof(itr->virt_addr))) { - d_printf(6, dev, "EDA: looking for " - "%02x:%02x:%02x:%02x:%02x:%02x hit %02x:%02x " - "wss %p tag 0x%02x state %u\n", - virt_addr[0], virt_addr[1], - virt_addr[2], virt_addr[3], - virt_addr[4], virt_addr[5], - itr->dev_addr.data[1], - itr->dev_addr.data[0], itr->wss, - itr->tag, itr->state); result = (*function)(wlp, itr, priv); *dev_addr = itr->dev_addr; found = 1; break; - } else - d_printf(6, dev, "EDA: looking for " - "%02x:%02x:%02x:%02x:%02x:%02x " - "against " - "%02x:%02x:%02x:%02x:%02x:%02x miss\n", - virt_addr[0], virt_addr[1], - virt_addr[2], virt_addr[3], - virt_addr[4], virt_addr[5], - itr->virt_addr[0], itr->virt_addr[1], - itr->virt_addr[2], itr->virt_addr[3], - itr->virt_addr[4], itr->virt_addr[5]); + } } - if (!found) { - if (printk_ratelimit()) - dev_err(dev, "EDA: Eth addr %02x:%02x:%02x" - ":%02x:%02x:%02x not found.\n", - virt_addr[0], virt_addr[1], - virt_addr[2], virt_addr[3], - virt_addr[4], virt_addr[5]); + if (!found) result = -ENODEV; - } spin_unlock_irqrestore(&eda->lock, flags); return result; } diff --git a/drivers/uwb/wlp/messages.c b/drivers/uwb/wlp/messages.c index a64cb824171..aa42fcee4c4 100644 --- a/drivers/uwb/wlp/messages.c +++ b/drivers/uwb/wlp/messages.c @@ -24,8 +24,7 @@ */ #include -#define D_LOCAL 6 -#include + #include "wlp-internal.h" static @@ -105,24 +104,18 @@ static inline void wlp_set_attr_hdr(struct wlp_attr_hdr *hdr, unsigned type, #define wlp_set(type, type_code, name) \ static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value) \ { \ - d_fnstart(6, NULL, "(attribute %p)\n", attr); \ wlp_set_attr_hdr(&attr->hdr, type_code, \ sizeof(*attr) - sizeof(struct wlp_attr_hdr)); \ attr->name = value; \ - d_dump(6, NULL, attr, sizeof(*attr)); \ - d_fnend(6, NULL, "(attribute %p)\n", attr); \ return sizeof(*attr); \ } #define wlp_pset(type, type_code, name) \ static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value) \ { \ - d_fnstart(6, NULL, "(attribute %p)\n", attr); \ wlp_set_attr_hdr(&attr->hdr, type_code, \ sizeof(*attr) - sizeof(struct wlp_attr_hdr)); \ attr->name = *value; \ - d_dump(6, NULL, attr, sizeof(*attr)); \ - d_fnend(6, NULL, "(attribute %p)\n", attr); \ return sizeof(*attr); \ } @@ -139,11 +132,8 @@ static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value) \ static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value, \ size_t len) \ { \ - d_fnstart(6, NULL, "(attribute %p)\n", attr); \ wlp_set_attr_hdr(&attr->hdr, type_code, len); \ memcpy(attr->name, value, len); \ - d_dump(6, NULL, attr, sizeof(*attr) + len); \ - d_fnend(6, NULL, "(attribute %p)\n", attr); \ return sizeof(*attr) + len; \ } @@ -182,7 +172,7 @@ static size_t wlp_set_wss_info(struct wlp_attr_wss_info *attr, size_t datalen; void *ptr = attr->wss_info; size_t used = sizeof(*attr); - d_fnstart(6, NULL, "(attribute %p)\n", attr); + datalen = sizeof(struct wlp_wss_info) + strlen(wss->name); wlp_set_attr_hdr(&attr->hdr, WLP_ATTR_WSS_INFO, datalen); used = wlp_set_wssid(ptr, &wss->wssid); @@ -190,9 +180,6 @@ static size_t wlp_set_wss_info(struct wlp_attr_wss_info *attr, used += wlp_set_accept_enrl(ptr + used, wss->accept_enroll); used += wlp_set_wss_sec_status(ptr + used, wss->secure_status); used += wlp_set_wss_bcast(ptr + used, &wss->bcast); - d_dump(6, NULL, attr, sizeof(*attr) + datalen); - d_fnend(6, NULL, "(attribute %p, used %d)\n", - attr, (int)(sizeof(*attr) + used)); return sizeof(*attr) + used; } @@ -414,7 +401,6 @@ static ssize_t wlp_get_wss_info_attrs(struct wlp *wlp, size_t used = 0; ssize_t result = -EINVAL; - d_printf(6, dev, "WLP: WSS info: Retrieving WSS name\n"); result = wlp_get_wss_name(wlp, ptr, info->name, buflen); if (result < 0) { dev_err(dev, "WLP: unable to obtain WSS name from " @@ -422,7 +408,7 @@ static ssize_t wlp_get_wss_info_attrs(struct wlp *wlp, goto error_parse; } used += result; - d_printf(6, dev, "WLP: WSS info: Retrieving accept enroll\n"); + result = wlp_get_accept_enrl(wlp, ptr + used, &info->accept_enroll, buflen - used); if (result < 0) { @@ -437,7 +423,7 @@ static ssize_t wlp_get_wss_info_attrs(struct wlp *wlp, goto error_parse; } used += result; - d_printf(6, dev, "WLP: WSS info: Retrieving secure status\n"); + result = wlp_get_wss_sec_status(wlp, ptr + used, &info->sec_status, buflen - used); if (result < 0) { @@ -452,7 +438,7 @@ static ssize_t wlp_get_wss_info_attrs(struct wlp *wlp, goto error_parse; } used += result; - d_printf(6, dev, "WLP: WSS info: Retrieving broadcast\n"); + result = wlp_get_wss_bcast(wlp, ptr + used, &info->bcast, buflen - used); if (result < 0) { @@ -530,7 +516,7 @@ static ssize_t wlp_get_wss_info(struct wlp *wlp, struct wlp_attr_wss_info *attr, len = result; used = sizeof(*attr); ptr = attr; - d_printf(6, dev, "WLP: WSS info: Retrieving WSSID\n"); + result = wlp_get_wssid(wlp, ptr + used, wssid, buflen - used); if (result < 0) { dev_err(dev, "WLP: unable to obtain WSSID from WSS info.\n"); @@ -553,8 +539,6 @@ static ssize_t wlp_get_wss_info(struct wlp *wlp, struct wlp_attr_wss_info *attr, goto out; } result = used; - d_printf(6, dev, "WLP: Successfully parsed WLP information " - "attribute. used %zu bytes\n", used); out: return result; } @@ -598,8 +582,6 @@ static ssize_t wlp_get_all_wss_info(struct wlp *wlp, struct wlp_wssid_e *wssid_e; char buf[WLP_WSS_UUID_STRSIZE]; - d_fnstart(6, dev, "wlp %p, attr %p, neighbor %p, wss %p, buflen %d \n", - wlp, attr, neighbor, wss, (int)buflen); if (buflen < 0) goto out; @@ -638,8 +620,7 @@ static ssize_t wlp_get_all_wss_info(struct wlp *wlp, wss->accept_enroll = wss_info.accept_enroll; wss->state = WLP_WSS_STATE_PART_ENROLLED; wlp_wss_uuid_print(buf, sizeof(buf), &wssid); - d_printf(2, dev, "WLP: Found WSS %s. Enrolling.\n", - buf); + dev_dbg(dev, "WLP: Found WSS %s. Enrolling.\n", buf); } else { wssid_e = wlp_create_wssid_e(wlp, neighbor); if (wssid_e == NULL) { @@ -660,9 +641,6 @@ error_parse: if (result < 0 && !enroll) /* this was a discovery */ wlp_remove_neighbor_tmp_info(neighbor); out: - d_fnend(6, dev, "wlp %p, attr %p, neighbor %p, wss %p, buflen %d, " - "result %d \n", wlp, attr, neighbor, wss, (int)buflen, - (int)result); return result; } @@ -718,7 +696,6 @@ static int wlp_build_assoc_d1(struct wlp *wlp, struct wlp_wss *wss, struct sk_buff *_skb; void *d1_itr; - d_fnstart(6, dev, "wlp %p\n", wlp); if (wlp->dev_info == NULL) { result = __wlp_setup_device_info(wlp); if (result < 0) { @@ -728,24 +705,6 @@ static int wlp_build_assoc_d1(struct wlp *wlp, struct wlp_wss *wss, } } info = wlp->dev_info; - d_printf(6, dev, "Local properties:\n" - "Device name (%d bytes): %s\n" - "Model name (%d bytes): %s\n" - "Manufacturer (%d bytes): %s\n" - "Model number (%d bytes): %s\n" - "Serial number (%d bytes): %s\n" - "Primary device type: \n" - " Category: %d \n" - " OUI: %02x:%02x:%02x \n" - " OUI Subdivision: %u \n", - (int)strlen(info->name), info->name, - (int)strlen(info->model_name), info->model_name, - (int)strlen(info->manufacturer), info->manufacturer, - (int)strlen(info->model_nr), info->model_nr, - (int)strlen(info->serial), info->serial, - info->prim_dev_type.category, - info->prim_dev_type.OUI[0], info->prim_dev_type.OUI[1], - info->prim_dev_type.OUI[2], info->prim_dev_type.OUIsubdiv); _skb = dev_alloc_skb(sizeof(*_d1) + sizeof(struct wlp_attr_uuid_e) + sizeof(struct wlp_attr_wss_sel_mthd) @@ -768,7 +727,6 @@ static int wlp_build_assoc_d1(struct wlp *wlp, struct wlp_wss *wss, goto error; } _d1 = (void *) _skb->data; - d_printf(6, dev, "D1 starts at %p \n", _d1); _d1->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID); _d1->hdr.type = WLP_FRAME_ASSOCIATION; _d1->type = WLP_ASSOC_D1; @@ -791,25 +749,8 @@ static int wlp_build_assoc_d1(struct wlp *wlp, struct wlp_wss *wss, used += wlp_set_prim_dev_type(d1_itr + used, &info->prim_dev_type); used += wlp_set_wlp_assc_err(d1_itr + used, WLP_ASSOC_ERROR_NONE); skb_put(_skb, sizeof(*_d1) + used); - d_printf(6, dev, "D1 message:\n"); - d_dump(6, dev, _d1, sizeof(*_d1) - + sizeof(struct wlp_attr_uuid_e) - + sizeof(struct wlp_attr_wss_sel_mthd) - + sizeof(struct wlp_attr_dev_name) - + strlen(info->name) - + sizeof(struct wlp_attr_manufacturer) - + strlen(info->manufacturer) - + sizeof(struct wlp_attr_model_name) - + strlen(info->model_name) - + sizeof(struct wlp_attr_model_nr) - + strlen(info->model_nr) - + sizeof(struct wlp_attr_serial) - + strlen(info->serial) - + sizeof(struct wlp_attr_prim_dev_type) - + sizeof(struct wlp_attr_wlp_assc_err)); *skb = _skb; error: - d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result); return result; } @@ -837,7 +778,6 @@ int wlp_build_assoc_d2(struct wlp *wlp, struct wlp_wss *wss, void *d2_itr; size_t mem_needed; - d_fnstart(6, dev, "wlp %p\n", wlp); if (wlp->dev_info == NULL) { result = __wlp_setup_device_info(wlp); if (result < 0) { @@ -847,24 +787,6 @@ int wlp_build_assoc_d2(struct wlp *wlp, struct wlp_wss *wss, } } info = wlp->dev_info; - d_printf(6, dev, "Local properties:\n" - "Device name (%d bytes): %s\n" - "Model name (%d bytes): %s\n" - "Manufacturer (%d bytes): %s\n" - "Model number (%d bytes): %s\n" - "Serial number (%d bytes): %s\n" - "Primary device type: \n" - " Category: %d \n" - " OUI: %02x:%02x:%02x \n" - " OUI Subdivision: %u \n", - (int)strlen(info->name), info->name, - (int)strlen(info->model_name), info->model_name, - (int)strlen(info->manufacturer), info->manufacturer, - (int)strlen(info->model_nr), info->model_nr, - (int)strlen(info->serial), info->serial, - info->prim_dev_type.category, - info->prim_dev_type.OUI[0], info->prim_dev_type.OUI[1], - info->prim_dev_type.OUI[2], info->prim_dev_type.OUIsubdiv); mem_needed = sizeof(*_d2) + sizeof(struct wlp_attr_uuid_e) + sizeof(struct wlp_attr_uuid_r) @@ -892,7 +814,6 @@ int wlp_build_assoc_d2(struct wlp *wlp, struct wlp_wss *wss, goto error; } _d2 = (void *) _skb->data; - d_printf(6, dev, "D2 starts at %p \n", _d2); _d2->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID); _d2->hdr.type = WLP_FRAME_ASSOCIATION; _d2->type = WLP_ASSOC_D2; @@ -917,11 +838,8 @@ int wlp_build_assoc_d2(struct wlp *wlp, struct wlp_wss *wss, used += wlp_set_prim_dev_type(d2_itr + used, &info->prim_dev_type); used += wlp_set_wlp_assc_err(d2_itr + used, WLP_ASSOC_ERROR_NONE); skb_put(_skb, sizeof(*_d2) + used); - d_printf(6, dev, "D2 message:\n"); - d_dump(6, dev, _d2, mem_needed); *skb = _skb; error: - d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result); return result; } @@ -947,7 +865,6 @@ int wlp_build_assoc_f0(struct wlp *wlp, struct sk_buff **skb, struct sk_buff *_skb; struct wlp_nonce tmp; - d_fnstart(6, dev, "wlp %p\n", wlp); _skb = dev_alloc_skb(sizeof(*f0)); if (_skb == NULL) { dev_err(dev, "WLP: Unable to allocate memory for F0 " @@ -955,7 +872,6 @@ int wlp_build_assoc_f0(struct wlp *wlp, struct sk_buff **skb, goto error_alloc; } f0 = (void *) _skb->data; - d_printf(6, dev, "F0 starts at %p \n", f0); f0->f0_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID); f0->f0_hdr.hdr.type = WLP_FRAME_ASSOCIATION; f0->f0_hdr.type = WLP_ASSOC_F0; @@ -969,7 +885,6 @@ int wlp_build_assoc_f0(struct wlp *wlp, struct sk_buff **skb, *skb = _skb; result = 0; error_alloc: - d_fnend(6, dev, "wlp %p, result %d \n", wlp, result); return result; } @@ -1242,12 +1157,9 @@ void wlp_handle_d1_frame(struct work_struct *ws) enum wlp_wss_sel_mthd sel_mthd = 0; struct wlp_device_info dev_info; enum wlp_assc_error assc_err; - char uuid[WLP_WSS_UUID_STRSIZE]; struct sk_buff *resp = NULL; /* Parse D1 frame */ - d_fnstart(6, dev, "WLP: handle D1 frame. wlp = %p, skb = %p\n", - wlp, skb); mutex_lock(&wss->mutex); mutex_lock(&wlp->mutex); /* to access wlp->uuid */ memset(&dev_info, 0, sizeof(dev_info)); @@ -1258,30 +1170,6 @@ void wlp_handle_d1_frame(struct work_struct *ws) kfree_skb(skb); goto out; } - wlp_wss_uuid_print(uuid, sizeof(uuid), &uuid_e); - d_printf(6, dev, "From D1 frame:\n" - "UUID-E: %s\n" - "Selection method: %d\n" - "Device name (%d bytes): %s\n" - "Model name (%d bytes): %s\n" - "Manufacturer (%d bytes): %s\n" - "Model number (%d bytes): %s\n" - "Serial number (%d bytes): %s\n" - "Primary device type: \n" - " Category: %d \n" - " OUI: %02x:%02x:%02x \n" - " OUI Subdivision: %u \n", - uuid, sel_mthd, - (int)strlen(dev_info.name), dev_info.name, - (int)strlen(dev_info.model_name), dev_info.model_name, - (int)strlen(dev_info.manufacturer), dev_info.manufacturer, - (int)strlen(dev_info.model_nr), dev_info.model_nr, - (int)strlen(dev_info.serial), dev_info.serial, - dev_info.prim_dev_type.category, - dev_info.prim_dev_type.OUI[0], - dev_info.prim_dev_type.OUI[1], - dev_info.prim_dev_type.OUI[2], - dev_info.prim_dev_type.OUIsubdiv); kfree_skb(skb); if (!wlp_uuid_is_set(&wlp->uuid)) { @@ -1316,7 +1204,6 @@ out: kfree(frame_ctx); mutex_unlock(&wlp->mutex); mutex_unlock(&wss->mutex); - d_fnend(6, dev, "WLP: handle D1 frame. wlp = %p\n", wlp); } /** @@ -1546,10 +1433,8 @@ int wlp_parse_c3c4_frame(struct wlp *wlp, struct sk_buff *skb, void *ptr = skb->data; size_t len = skb->len; size_t used; - char buf[WLP_WSS_UUID_STRSIZE]; struct wlp_frame_assoc *assoc = ptr; - d_fnstart(6, dev, "wlp %p, skb %p \n", wlp, skb); used = sizeof(*assoc); result = wlp_get_wssid(wlp, ptr + used, wssid, len - used); if (result < 0) { @@ -1572,14 +1457,7 @@ int wlp_parse_c3c4_frame(struct wlp *wlp, struct sk_buff *skb, wlp_assoc_frame_str(assoc->type)); goto error_parse; } - wlp_wss_uuid_print(buf, sizeof(buf), wssid); - d_printf(6, dev, "WLP: parsed: WSSID %s, tag 0x%02x, virt " - "%02x:%02x:%02x:%02x:%02x:%02x \n", buf, *tag, - virt_addr->data[0], virt_addr->data[1], virt_addr->data[2], - virt_addr->data[3], virt_addr->data[4], virt_addr->data[5]); - error_parse: - d_fnend(6, dev, "wlp %p, skb %p, result = %d \n", wlp, skb, result); return result; } @@ -1600,7 +1478,6 @@ int wlp_build_assoc_c1c2(struct wlp *wlp, struct wlp_wss *wss, } *c; struct sk_buff *_skb; - d_fnstart(6, dev, "wlp %p, wss %p \n", wlp, wss); _skb = dev_alloc_skb(sizeof(*c)); if (_skb == NULL) { dev_err(dev, "WLP: Unable to allocate memory for C1/C2 " @@ -1608,7 +1485,6 @@ int wlp_build_assoc_c1c2(struct wlp *wlp, struct wlp_wss *wss, goto error_alloc; } c = (void *) _skb->data; - d_printf(6, dev, "C1/C2 starts at %p \n", c); c->c_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID); c->c_hdr.hdr.type = WLP_FRAME_ASSOCIATION; c->c_hdr.type = type; @@ -1616,12 +1492,9 @@ int wlp_build_assoc_c1c2(struct wlp *wlp, struct wlp_wss *wss, wlp_set_msg_type(&c->c_hdr.msg_type, type); wlp_set_wssid(&c->wssid, &wss->wssid); skb_put(_skb, sizeof(*c)); - d_printf(6, dev, "C1/C2 message:\n"); - d_dump(6, dev, c, sizeof(*c)); *skb = _skb; result = 0; error_alloc: - d_fnend(6, dev, "wlp %p, wss %p, result %d \n", wlp, wss, result); return result; } @@ -1660,7 +1533,6 @@ int wlp_build_assoc_c3c4(struct wlp *wlp, struct wlp_wss *wss, } *c; struct sk_buff *_skb; - d_fnstart(6, dev, "wlp %p, wss %p \n", wlp, wss); _skb = dev_alloc_skb(sizeof(*c)); if (_skb == NULL) { dev_err(dev, "WLP: Unable to allocate memory for C3/C4 " @@ -1668,7 +1540,6 @@ int wlp_build_assoc_c3c4(struct wlp *wlp, struct wlp_wss *wss, goto error_alloc; } c = (void *) _skb->data; - d_printf(6, dev, "C3/C4 starts at %p \n", c); c->c_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID); c->c_hdr.hdr.type = WLP_FRAME_ASSOCIATION; c->c_hdr.type = type; @@ -1678,12 +1549,9 @@ int wlp_build_assoc_c3c4(struct wlp *wlp, struct wlp_wss *wss, wlp_set_wss_tag(&c->wss_tag, wss->tag); wlp_set_wss_virt(&c->wss_virt, &wss->virtual_addr); skb_put(_skb, sizeof(*c)); - d_printf(6, dev, "C3/C4 message:\n"); - d_dump(6, dev, c, sizeof(*c)); *skb = _skb; result = 0; error_alloc: - d_fnend(6, dev, "wlp %p, wss %p, result %d \n", wlp, wss, result); return result; } @@ -1709,10 +1577,7 @@ static int wlp_send_assoc_##type(struct wlp *wlp, struct wlp_wss *wss, \ struct device *dev = &wlp->rc->uwb_dev.dev; \ int result; \ struct sk_buff *skb = NULL; \ - d_fnstart(6, dev, "wlp %p, wss %p, neighbor: %02x:%02x\n", \ - wlp, wss, dev_addr->data[1], dev_addr->data[0]); \ - d_printf(6, dev, "WLP: Constructing %s frame. \n", \ - wlp_assoc_frame_str(id)); \ + \ /* Build the frame */ \ result = wlp_build_assoc_##type(wlp, wss, &skb); \ if (result < 0) { \ @@ -1721,9 +1586,6 @@ static int wlp_send_assoc_##type(struct wlp *wlp, struct wlp_wss *wss, \ goto error_build_assoc; \ } \ /* Send the frame */ \ - d_printf(6, dev, "Transmitting %s frame to %02x:%02x \n", \ - wlp_assoc_frame_str(id), \ - dev_addr->data[1], dev_addr->data[0]); \ BUG_ON(wlp->xmit_frame == NULL); \ result = wlp->xmit_frame(wlp, skb, dev_addr); \ if (result < 0) { \ @@ -1740,8 +1602,6 @@ error_xmit: \ /* We could try again ... */ \ dev_kfree_skb_any(skb);/*we need to free if tx fails*/ \ error_build_assoc: \ - d_fnend(6, dev, "wlp %p, wss %p, neighbor: %02x:%02x\n", \ - wlp, wss, dev_addr->data[1], dev_addr->data[0]); \ return result; \ } @@ -1794,12 +1654,9 @@ void wlp_handle_c1_frame(struct work_struct *ws) struct uwb_dev_addr *src = &frame_ctx->src; int result; struct wlp_uuid wssid; - char buf[WLP_WSS_UUID_STRSIZE]; struct sk_buff *resp = NULL; /* Parse C1 frame */ - d_fnstart(6, dev, "WLP: handle C1 frame. wlp = %p, c1 = %p\n", - wlp, c1); mutex_lock(&wss->mutex); result = wlp_get_wssid(wlp, (void *)c1 + sizeof(*c1), &wssid, len - sizeof(*c1)); @@ -1807,12 +1664,8 @@ void wlp_handle_c1_frame(struct work_struct *ws) dev_err(dev, "WLP: unable to obtain WSSID from C1 frame.\n"); goto out; } - wlp_wss_uuid_print(buf, sizeof(buf), &wssid); - d_printf(6, dev, "Received C1 frame with WSSID %s \n", buf); if (!memcmp(&wssid, &wss->wssid, sizeof(wssid)) && wss->state == WLP_WSS_STATE_ACTIVE) { - d_printf(6, dev, "WSSID from C1 frame is known locally " - "and is active\n"); /* Construct C2 frame */ result = wlp_build_assoc_c2(wlp, wss, &resp); if (result < 0) { @@ -1820,8 +1673,6 @@ void wlp_handle_c1_frame(struct work_struct *ws) goto out; } } else { - d_printf(6, dev, "WSSID from C1 frame is not known locally " - "or is not active\n"); /* Construct F0 frame */ result = wlp_build_assoc_f0(wlp, &resp, WLP_ASSOC_ERROR_INV); if (result < 0) { @@ -1830,8 +1681,6 @@ void wlp_handle_c1_frame(struct work_struct *ws) } } /* Send C2 frame */ - d_printf(6, dev, "Transmitting response (C2/F0) frame to %02x:%02x \n", - src->data[1], src->data[0]); BUG_ON(wlp->xmit_frame == NULL); result = wlp->xmit_frame(wlp, resp, src); if (result < 0) { @@ -1846,7 +1695,6 @@ out: kfree_skb(frame_ctx->skb); kfree(frame_ctx); mutex_unlock(&wss->mutex); - d_fnend(6, dev, "WLP: handle C1 frame. wlp = %p\n", wlp); } /** @@ -1868,27 +1716,20 @@ void wlp_handle_c3_frame(struct work_struct *ws) struct sk_buff *skb = frame_ctx->skb; struct uwb_dev_addr *src = &frame_ctx->src; int result; - char buf[WLP_WSS_UUID_STRSIZE]; struct sk_buff *resp = NULL; struct wlp_uuid wssid; u8 tag; struct uwb_mac_addr virt_addr; /* Parse C3 frame */ - d_fnstart(6, dev, "WLP: handle C3 frame. wlp = %p, skb = %p\n", - wlp, skb); mutex_lock(&wss->mutex); result = wlp_parse_c3c4_frame(wlp, skb, &wssid, &tag, &virt_addr); if (result < 0) { dev_err(dev, "WLP: unable to obtain values from C3 frame.\n"); goto out; } - wlp_wss_uuid_print(buf, sizeof(buf), &wssid); - d_printf(6, dev, "Received C3 frame with WSSID %s \n", buf); if (!memcmp(&wssid, &wss->wssid, sizeof(wssid)) && wss->state >= WLP_WSS_STATE_ACTIVE) { - d_printf(6, dev, "WSSID from C3 frame is known locally " - "and is active\n"); result = wlp_eda_update_node(&wlp->eda, src, wss, (void *) virt_addr.data, tag, WLP_WSS_CONNECTED); @@ -1913,8 +1754,6 @@ void wlp_handle_c3_frame(struct work_struct *ws) } } } else { - d_printf(6, dev, "WSSID from C3 frame is not known locally " - "or is not active\n"); /* Construct F0 frame */ result = wlp_build_assoc_f0(wlp, &resp, WLP_ASSOC_ERROR_INV); if (result < 0) { @@ -1923,8 +1762,6 @@ void wlp_handle_c3_frame(struct work_struct *ws) } } /* Send C4 frame */ - d_printf(6, dev, "Transmitting response (C4/F0) frame to %02x:%02x \n", - src->data[1], src->data[0]); BUG_ON(wlp->xmit_frame == NULL); result = wlp->xmit_frame(wlp, resp, src); if (result < 0) { @@ -1939,8 +1776,6 @@ out: kfree_skb(frame_ctx->skb); kfree(frame_ctx); mutex_unlock(&wss->mutex); - d_fnend(6, dev, "WLP: handle C3 frame. wlp = %p, skb = %p\n", - wlp, skb); } diff --git a/drivers/uwb/wlp/sysfs.c b/drivers/uwb/wlp/sysfs.c index 1bb9b1f97d4..0370399ff4b 100644 --- a/drivers/uwb/wlp/sysfs.c +++ b/drivers/uwb/wlp/sysfs.c @@ -23,8 +23,8 @@ * FIXME: Docs * */ - #include + #include "wlp-internal.h" static diff --git a/drivers/uwb/wlp/txrx.c b/drivers/uwb/wlp/txrx.c index c701bd1a288..cd2035768b4 100644 --- a/drivers/uwb/wlp/txrx.c +++ b/drivers/uwb/wlp/txrx.c @@ -26,12 +26,10 @@ #include #include -#define D_LOCAL 5 -#include -#include "wlp-internal.h" +#include "wlp-internal.h" -/** +/* * Direct incoming association msg to correct parsing routine * * We only expect D1, E1, C1, C3 messages as new. All other incoming @@ -48,35 +46,31 @@ void wlp_direct_assoc_frame(struct wlp *wlp, struct sk_buff *skb, struct device *dev = &wlp->rc->uwb_dev.dev; struct wlp_frame_assoc *assoc = (void *) skb->data; struct wlp_assoc_frame_ctx *frame_ctx; - d_fnstart(5, dev, "wlp %p, skb %p\n", wlp, skb); + frame_ctx = kmalloc(sizeof(*frame_ctx), GFP_ATOMIC); if (frame_ctx == NULL) { dev_err(dev, "WLP: Unable to allocate memory for association " "frame handling.\n"); kfree_skb(skb); - goto out; + return; } frame_ctx->wlp = wlp; frame_ctx->skb = skb; frame_ctx->src = *src; switch (assoc->type) { case WLP_ASSOC_D1: - d_printf(5, dev, "Received a D1 frame.\n"); INIT_WORK(&frame_ctx->ws, wlp_handle_d1_frame); schedule_work(&frame_ctx->ws); break; case WLP_ASSOC_E1: - d_printf(5, dev, "Received a E1 frame. FIXME?\n"); kfree_skb(skb); /* Temporary until we handle it */ kfree(frame_ctx); /* Temporary until we handle it */ break; case WLP_ASSOC_C1: - d_printf(5, dev, "Received a C1 frame.\n"); INIT_WORK(&frame_ctx->ws, wlp_handle_c1_frame); schedule_work(&frame_ctx->ws); break; case WLP_ASSOC_C3: - d_printf(5, dev, "Received a C3 frame.\n"); INIT_WORK(&frame_ctx->ws, wlp_handle_c3_frame); schedule_work(&frame_ctx->ws); break; @@ -87,11 +81,9 @@ void wlp_direct_assoc_frame(struct wlp *wlp, struct sk_buff *skb, kfree(frame_ctx); break; } -out: - d_fnend(5, dev, "wlp %p\n", wlp); } -/** +/* * Process incoming association frame * * Although it could be possible to deal with some incoming association @@ -112,7 +104,6 @@ void wlp_receive_assoc_frame(struct wlp *wlp, struct sk_buff *skb, struct wlp_frame_assoc *assoc = (void *) skb->data; struct wlp_session *session = wlp->session; u8 version; - d_fnstart(5, dev, "wlp %p, skb %p\n", wlp, skb); if (wlp_get_version(wlp, &assoc->version, &version, sizeof(assoc->version)) < 0) @@ -150,14 +141,12 @@ void wlp_receive_assoc_frame(struct wlp *wlp, struct sk_buff *skb, } else { wlp_direct_assoc_frame(wlp, skb, src); } - d_fnend(5, dev, "wlp %p\n", wlp); return; error: kfree_skb(skb); - d_fnend(5, dev, "wlp %p\n", wlp); } -/** +/* * Verify incoming frame is from connected neighbor, prep to pass to WLP client * * Verification proceeds according to WLP 0.99 [7.3.1]. The source address @@ -176,7 +165,6 @@ int wlp_verify_prep_rx_frame(struct wlp *wlp, struct sk_buff *skb, struct wlp_eda_node eda_entry; struct wlp_frame_std_abbrv_hdr *hdr = (void *) skb->data; - d_fnstart(6, dev, "wlp %p, skb %p \n", wlp, skb); /*verify*/ result = wlp_copy_eda_node(&wlp->eda, src, &eda_entry); if (result < 0) { @@ -207,11 +195,10 @@ int wlp_verify_prep_rx_frame(struct wlp *wlp, struct sk_buff *skb, /*prep*/ skb_pull(skb, sizeof(*hdr)); out: - d_fnend(6, dev, "wlp %p, skb %p, result = %d \n", wlp, skb, result); return result; } -/** +/* * Receive a WLP frame from device * * @returns: 1 if calling function should free the skb @@ -226,14 +213,12 @@ int wlp_receive_frame(struct device *dev, struct wlp *wlp, struct sk_buff *skb, struct wlp_frame_hdr *hdr; int result = 0; - d_fnstart(6, dev, "skb (%p), len (%u)\n", skb, len); if (len < sizeof(*hdr)) { dev_err(dev, "Not enough data to parse WLP header.\n"); result = -EINVAL; goto out; } hdr = ptr; - d_dump(6, dev, hdr, sizeof(*hdr)); if (le16_to_cpu(hdr->mux_hdr) != WLP_PROTOCOL_ID) { dev_err(dev, "Not a WLP frame type.\n"); result = -EINVAL; @@ -270,7 +255,6 @@ int wlp_receive_frame(struct device *dev, struct wlp *wlp, struct sk_buff *skb, "WLP header.\n"); goto out; } - d_printf(5, dev, "Association frame received.\n"); wlp_receive_assoc_frame(wlp, skb, src); break; default: @@ -283,13 +267,12 @@ out: kfree_skb(skb); result = 0; } - d_fnend(6, dev, "skb (%p)\n", skb); return result; } EXPORT_SYMBOL_GPL(wlp_receive_frame); -/** +/* * Verify frame from network stack, prepare for further transmission * * @skb: the socket buffer that needs to be prepared for transmission (it @@ -343,9 +326,7 @@ int wlp_prepare_tx_frame(struct device *dev, struct wlp *wlp, int result = -EINVAL; struct ethhdr *eth_hdr = (void *) skb->data; - d_fnstart(6, dev, "wlp (%p), skb (%p) \n", wlp, skb); if (is_broadcast_ether_addr(eth_hdr->h_dest)) { - d_printf(6, dev, "WLP: handling broadcast frame. \n"); result = wlp_eda_for_each(&wlp->eda, wlp_wss_send_copy, skb); if (result < 0) { if (printk_ratelimit()) @@ -357,7 +338,6 @@ int wlp_prepare_tx_frame(struct device *dev, struct wlp *wlp, result = 1; /* Frame will be transmitted by WLP. */ } else { - d_printf(6, dev, "WLP: handling unicast frame. \n"); result = wlp_eda_for_virtual(&wlp->eda, eth_hdr->h_dest, dst, wlp_wss_prep_hdr, skb); if (unlikely(result < 0)) { @@ -368,7 +348,6 @@ int wlp_prepare_tx_frame(struct device *dev, struct wlp *wlp, } } out: - d_fnend(6, dev, "wlp (%p), skb (%p). result = %d \n", wlp, skb, result); return result; } EXPORT_SYMBOL_GPL(wlp_prepare_tx_frame); diff --git a/drivers/uwb/wlp/wlp-lc.c b/drivers/uwb/wlp/wlp-lc.c index e531093c416..13db739c4e3 100644 --- a/drivers/uwb/wlp/wlp-lc.c +++ b/drivers/uwb/wlp/wlp-lc.c @@ -21,12 +21,9 @@ * * FIXME: docs */ - #include -#define D_LOCAL 6 -#include -#include "wlp-internal.h" +#include "wlp-internal.h" static void wlp_neighbor_init(struct wlp_neighbor_e *neighbor) @@ -61,11 +58,6 @@ int __wlp_alloc_device_info(struct wlp *wlp) static void __wlp_fill_device_info(struct wlp *wlp) { - struct device *dev = &wlp->rc->uwb_dev.dev; - - BUG_ON(wlp->fill_device_info == NULL); - d_printf(6, dev, "Retrieving device information " - "from device driver.\n"); wlp->fill_device_info(wlp, wlp->dev_info); } @@ -127,7 +119,7 @@ void wlp_remove_neighbor_tmp_info(struct wlp_neighbor_e *neighbor) } } -/** +/* * Populate WLP neighborhood cache with neighbor information * * A new neighbor is found. If it is discoverable then we add it to the @@ -141,10 +133,7 @@ int wlp_add_neighbor(struct wlp *wlp, struct uwb_dev *dev) int discoverable; struct wlp_neighbor_e *neighbor; - d_fnstart(6, &dev->dev, "uwb %p \n", dev); - d_printf(6, &dev->dev, "Found neighbor device %02x:%02x \n", - dev->dev_addr.data[1], dev->dev_addr.data[0]); - /** + /* * FIXME: * Use contents of WLP IE found in beacon cache to determine if * neighbor is discoverable. @@ -167,7 +156,6 @@ int wlp_add_neighbor(struct wlp *wlp, struct uwb_dev *dev) list_add(&neighbor->node, &wlp->neighbors); } error_no_mem: - d_fnend(6, &dev->dev, "uwb %p, result = %d \n", dev, result); return result; } @@ -255,8 +243,6 @@ int wlp_d1d2_exchange(struct wlp *wlp, struct wlp_neighbor_e *neighbor, dev_err(dev, "Unable to send D1 frame to neighbor " "%02x:%02x (%d)\n", dev_addr->data[1], dev_addr->data[0], result); - d_printf(6, dev, "Add placeholders into buffer next to " - "neighbor information we have (dev address).\n"); goto out; } /* Create session, wait for response */ @@ -284,8 +270,6 @@ int wlp_d1d2_exchange(struct wlp *wlp, struct wlp_neighbor_e *neighbor, /* Parse message in session->data: it will be either D2 or F0 */ skb = session.data; resp = (void *) skb->data; - d_printf(6, dev, "Received response to D1 frame. \n"); - d_dump(6, dev, skb->data, skb->len > 72 ? 72 : skb->len); if (resp->type == WLP_ASSOC_F0) { result = wlp_parse_f0(wlp, skb); @@ -337,10 +321,9 @@ int wlp_enroll_neighbor(struct wlp *wlp, struct wlp_neighbor_e *neighbor, struct device *dev = &wlp->rc->uwb_dev.dev; char buf[WLP_WSS_UUID_STRSIZE]; struct uwb_dev_addr *dev_addr = &neighbor->uwb_dev->dev_addr; + wlp_wss_uuid_print(buf, sizeof(buf), wssid); - d_fnstart(6, dev, "wlp %p, neighbor %p, wss %p, wssid %p (%s)\n", - wlp, neighbor, wss, wssid, buf); - d_printf(6, dev, "Complete me.\n"); + result = wlp_d1d2_exchange(wlp, neighbor, wss, wssid); if (result < 0) { dev_err(dev, "WLP: D1/D2 message exchange for enrollment " @@ -360,13 +343,10 @@ int wlp_enroll_neighbor(struct wlp *wlp, struct wlp_neighbor_e *neighbor, goto error; } else { wss->state = WLP_WSS_STATE_ENROLLED; - d_printf(2, dev, "WLP: Success Enrollment into unsecure WSS " - "%s using neighbor %02x:%02x. \n", buf, - dev_addr->data[1], dev_addr->data[0]); + dev_dbg(dev, "WLP: Success Enrollment into unsecure WSS " + "%s using neighbor %02x:%02x. \n", + buf, dev_addr->data[1], dev_addr->data[0]); } - - d_fnend(6, dev, "wlp %p, neighbor %p, wss %p, wssid %p (%s)\n", - wlp, neighbor, wss, wssid, buf); out: return result; error: @@ -449,7 +429,6 @@ ssize_t wlp_discover(struct wlp *wlp) int result = 0; struct device *dev = &wlp->rc->uwb_dev.dev; - d_fnstart(6, dev, "wlp %p \n", wlp); mutex_lock(&wlp->nbmutex); /* Clear current neighborhood cache. */ __wlp_neighbors_release(wlp); @@ -469,7 +448,6 @@ ssize_t wlp_discover(struct wlp *wlp) } error_dev_for_each: mutex_unlock(&wlp->nbmutex); - d_fnend(6, dev, "wlp %p \n", wlp); return result; } @@ -492,9 +470,6 @@ void wlp_uwb_notifs_cb(void *_wlp, struct uwb_dev *uwb_dev, int result; switch (event) { case UWB_NOTIF_ONAIR: - d_printf(6, dev, "UWB device %02x:%02x is onair\n", - uwb_dev->dev_addr.data[1], - uwb_dev->dev_addr.data[0]); result = wlp_eda_create_node(&wlp->eda, uwb_dev->mac_addr.data, &uwb_dev->dev_addr); @@ -505,18 +480,11 @@ void wlp_uwb_notifs_cb(void *_wlp, struct uwb_dev *uwb_dev, uwb_dev->dev_addr.data[0]); break; case UWB_NOTIF_OFFAIR: - d_printf(6, dev, "UWB device %02x:%02x is offair\n", - uwb_dev->dev_addr.data[1], - uwb_dev->dev_addr.data[0]); wlp_eda_rm_node(&wlp->eda, &uwb_dev->dev_addr); mutex_lock(&wlp->nbmutex); - list_for_each_entry_safe(neighbor, next, &wlp->neighbors, - node) { - if (neighbor->uwb_dev == uwb_dev) { - d_printf(6, dev, "Removing device from " - "neighborhood.\n"); + list_for_each_entry_safe(neighbor, next, &wlp->neighbors, node) { + if (neighbor->uwb_dev == uwb_dev) __wlp_neighbor_release(neighbor); - } } mutex_unlock(&wlp->nbmutex); break; @@ -538,14 +506,13 @@ static void wlp_channel_changed(struct uwb_pal *pal, int channel) int wlp_setup(struct wlp *wlp, struct uwb_rc *rc, struct net_device *ndev) { - struct device *dev = &rc->uwb_dev.dev; int result; - d_fnstart(6, dev, "wlp %p\n", wlp); BUG_ON(wlp->fill_device_info == NULL); BUG_ON(wlp->xmit_frame == NULL); BUG_ON(wlp->stop_queue == NULL); BUG_ON(wlp->start_queue == NULL); + wlp->rc = rc; wlp->ndev = ndev; wlp_eda_init(&wlp->eda);/* Set up address cache */ @@ -560,15 +527,12 @@ int wlp_setup(struct wlp *wlp, struct uwb_rc *rc, struct net_device *ndev) if (result < 0) uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler); - d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result); return result; } EXPORT_SYMBOL_GPL(wlp_setup); void wlp_remove(struct wlp *wlp) { - struct device *dev = &wlp->rc->uwb_dev.dev; - d_fnstart(6, dev, "wlp %p\n", wlp); wlp_neighbors_release(wlp); uwb_pal_unregister(&wlp->pal); uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler); @@ -578,9 +542,6 @@ void wlp_remove(struct wlp *wlp) kfree(wlp->dev_info); mutex_unlock(&wlp->mutex); wlp->rc = NULL; - /* We have to use NULL here because this function can be called - * when the device disappeared. */ - d_fnend(6, NULL, "wlp %p\n", wlp); } EXPORT_SYMBOL_GPL(wlp_remove); diff --git a/drivers/uwb/wlp/wss-lc.c b/drivers/uwb/wlp/wss-lc.c index 96b18c9bd6e..5913c7a5d92 100644 --- a/drivers/uwb/wlp/wss-lc.c +++ b/drivers/uwb/wlp/wss-lc.c @@ -43,14 +43,11 @@ * wlp_wss_release() * wlp_wss_reset() */ - #include /* for is_valid_ether_addr */ #include #include -#define D_LOCAL 5 -#include -#include "wlp-internal.h" +#include "wlp-internal.h" size_t wlp_wss_key_print(char *buf, size_t bufsize, u8 *key) { @@ -116,9 +113,6 @@ struct uwb_mac_addr wlp_wss_sel_bcast_addr(struct wlp_wss *wss) */ void wlp_wss_reset(struct wlp_wss *wss) { - struct wlp *wlp = container_of(wss, struct wlp, wss); - struct device *dev = &wlp->rc->uwb_dev.dev; - d_fnstart(5, dev, "wss (%p) \n", wss); memset(&wss->wssid, 0, sizeof(wss->wssid)); wss->hash = 0; memset(&wss->name[0], 0, sizeof(wss->name)); @@ -127,7 +121,6 @@ void wlp_wss_reset(struct wlp_wss *wss) memset(&wss->master_key[0], 0, sizeof(wss->master_key)); wss->tag = 0; wss->state = WLP_WSS_STATE_NONE; - d_fnend(5, dev, "wss (%p) \n", wss); } /** @@ -145,7 +138,6 @@ int wlp_wss_sysfs_add(struct wlp_wss *wss, char *wssid_str) struct device *dev = &wlp->rc->uwb_dev.dev; int result; - d_fnstart(5, dev, "wss (%p), wssid: %s\n", wss, wssid_str); result = kobject_set_name(&wss->kobj, "wss-%s", wssid_str); if (result < 0) return result; @@ -162,7 +154,6 @@ int wlp_wss_sysfs_add(struct wlp_wss *wss, char *wssid_str) result); goto error_sysfs_create_group; } - d_fnend(5, dev, "Completed. result = %d \n", result); return 0; error_sysfs_create_group: @@ -214,22 +205,14 @@ int wlp_wss_enroll_target(struct wlp_wss *wss, struct wlp_uuid *wssid, struct wlp *wlp = container_of(wss, struct wlp, wss); struct device *dev = &wlp->rc->uwb_dev.dev; struct wlp_neighbor_e *neighbor; - char buf[WLP_WSS_UUID_STRSIZE]; int result = -ENXIO; struct uwb_dev_addr *dev_addr; - wlp_wss_uuid_print(buf, sizeof(buf), wssid); - d_fnstart(5, dev, "wss %p, wssid %s, registrar %02x:%02x \n", - wss, buf, dest->data[1], dest->data[0]); mutex_lock(&wlp->nbmutex); list_for_each_entry(neighbor, &wlp->neighbors, node) { dev_addr = &neighbor->uwb_dev->dev_addr; if (!memcmp(dest, dev_addr, sizeof(*dest))) { - d_printf(5, dev, "Neighbor %02x:%02x is valid, " - "enrolling. \n", - dev_addr->data[1], dev_addr->data[0]); - result = wlp_enroll_neighbor(wlp, neighbor, wss, - wssid); + result = wlp_enroll_neighbor(wlp, neighbor, wss, wssid); break; } } @@ -237,8 +220,6 @@ int wlp_wss_enroll_target(struct wlp_wss *wss, struct wlp_uuid *wssid, dev_err(dev, "WLP: Cannot find neighbor %02x:%02x. \n", dest->data[1], dest->data[0]); mutex_unlock(&wlp->nbmutex); - d_fnend(5, dev, "wss %p, wssid %s, registrar %02x:%02x, result %d \n", - wss, buf, dest->data[1], dest->data[0], result); return result; } @@ -260,16 +241,11 @@ int wlp_wss_enroll_discovered(struct wlp_wss *wss, struct wlp_uuid *wssid) char buf[WLP_WSS_UUID_STRSIZE]; int result = -ENXIO; - wlp_wss_uuid_print(buf, sizeof(buf), wssid); - d_fnstart(5, dev, "wss %p, wssid %s \n", wss, buf); + mutex_lock(&wlp->nbmutex); list_for_each_entry(neighbor, &wlp->neighbors, node) { list_for_each_entry(wssid_e, &neighbor->wssid, node) { if (!memcmp(wssid, &wssid_e->wssid, sizeof(*wssid))) { - d_printf(5, dev, "Found WSSID %s in neighbor " - "%02x:%02x cache. \n", buf, - neighbor->uwb_dev->dev_addr.data[1], - neighbor->uwb_dev->dev_addr.data[0]); result = wlp_enroll_neighbor(wlp, neighbor, wss, wssid); if (result == 0) /* enrollment success */ @@ -279,10 +255,11 @@ int wlp_wss_enroll_discovered(struct wlp_wss *wss, struct wlp_uuid *wssid) } } out: - if (result == -ENXIO) + if (result == -ENXIO) { + wlp_wss_uuid_print(buf, sizeof(buf), wssid); dev_err(dev, "WLP: Cannot find WSSID %s in cache. \n", buf); + } mutex_unlock(&wlp->nbmutex); - d_fnend(5, dev, "wss %p, wssid %s, result %d \n", wss, buf, result); return result; } @@ -307,27 +284,22 @@ int wlp_wss_enroll(struct wlp_wss *wss, struct wlp_uuid *wssid, struct uwb_dev_addr bcast = {.data = {0xff, 0xff} }; wlp_wss_uuid_print(buf, sizeof(buf), wssid); + if (wss->state != WLP_WSS_STATE_NONE) { dev_err(dev, "WLP: Already enrolled in WSS %s.\n", buf); result = -EEXIST; goto error; } - if (!memcmp(&bcast, devaddr, sizeof(bcast))) { - d_printf(5, dev, "Request to enroll in discovered WSS " - "with WSSID %s \n", buf); + if (!memcmp(&bcast, devaddr, sizeof(bcast))) result = wlp_wss_enroll_discovered(wss, wssid); - } else { - d_printf(5, dev, "Request to enroll in WSSID %s with " - "registrar %02x:%02x\n", buf, devaddr->data[1], - devaddr->data[0]); + else result = wlp_wss_enroll_target(wss, wssid, devaddr); - } if (result < 0) { dev_err(dev, "WLP: Unable to enroll into WSS %s, result %d \n", buf, result); goto error; } - d_printf(2, dev, "Successfully enrolled into WSS %s \n", buf); + dev_dbg(dev, "Successfully enrolled into WSS %s \n", buf); result = wlp_wss_sysfs_add(wss, buf); if (result < 0) { dev_err(dev, "WLP: Unable to set up sysfs for WSS kobject.\n"); @@ -363,7 +335,6 @@ int wlp_wss_activate(struct wlp_wss *wss) u8 hash; /* only include one hash */ } ie_data; - d_fnstart(5, dev, "Activating WSS %p. \n", wss); BUG_ON(wss->state != WLP_WSS_STATE_ENROLLED); wss->hash = wlp_wss_comp_wssid_hash(&wss->wssid); wss->tag = wss->hash; @@ -382,7 +353,6 @@ int wlp_wss_activate(struct wlp_wss *wss) wss->state = WLP_WSS_STATE_ACTIVE; result = 0; error_wlp_ie: - d_fnend(5, dev, "Activating WSS %p, result = %d \n", wss, result); return result; } @@ -405,7 +375,6 @@ int wlp_wss_enroll_activate(struct wlp_wss *wss, struct wlp_uuid *wssid, int result = 0; char buf[WLP_WSS_UUID_STRSIZE]; - d_fnstart(5, dev, "Enrollment and activation requested. \n"); mutex_lock(&wss->mutex); result = wlp_wss_enroll(wss, wssid, devaddr); if (result < 0) { @@ -424,7 +393,6 @@ int wlp_wss_enroll_activate(struct wlp_wss *wss, struct wlp_uuid *wssid, error_activate: error_enroll: mutex_unlock(&wss->mutex); - d_fnend(5, dev, "Completed. result = %d \n", result); return result; } @@ -447,11 +415,9 @@ int wlp_wss_create_activate(struct wlp_wss *wss, struct wlp_uuid *wssid, struct device *dev = &wlp->rc->uwb_dev.dev; int result = 0; char buf[WLP_WSS_UUID_STRSIZE]; - d_fnstart(5, dev, "Request to create new WSS.\n"); + result = wlp_wss_uuid_print(buf, sizeof(buf), wssid); - d_printf(5, dev, "Request to create WSS: WSSID=%s, name=%s, " - "sec_status=%u, accepting enrollment=%u \n", - buf, name, sec_status, accept); + if (!mutex_trylock(&wss->mutex)) { dev_err(dev, "WLP: WLP association session in progress.\n"); return -EBUSY; @@ -498,7 +464,6 @@ int wlp_wss_create_activate(struct wlp_wss *wss, struct wlp_uuid *wssid, result = 0; out: mutex_unlock(&wss->mutex); - d_fnend(5, dev, "Completed. result = %d \n", result); return result; } @@ -520,16 +485,12 @@ int wlp_wss_is_active(struct wlp *wlp, struct wlp_wss *wss, { int result = 0; struct device *dev = &wlp->rc->uwb_dev.dev; - char buf[WLP_WSS_UUID_STRSIZE]; DECLARE_COMPLETION_ONSTACK(completion); struct wlp_session session; struct sk_buff *skb; struct wlp_frame_assoc *resp; struct wlp_uuid wssid; - wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid); - d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n", - wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]); mutex_lock(&wlp->mutex); /* Send C1 association frame */ result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_C1); @@ -565,8 +526,6 @@ int wlp_wss_is_active(struct wlp *wlp, struct wlp_wss *wss, /* Parse message in session->data: it will be either C2 or F0 */ skb = session.data; resp = (void *) skb->data; - d_printf(5, dev, "Received response to C1 frame. \n"); - d_dump(5, dev, skb->data, skb->len > 72 ? 72 : skb->len); if (resp->type == WLP_ASSOC_F0) { result = wlp_parse_f0(wlp, skb); if (result < 0) @@ -584,11 +543,9 @@ int wlp_wss_is_active(struct wlp *wlp, struct wlp_wss *wss, result = 0; goto error_resp_parse; } - if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))) { - d_printf(5, dev, "WSSID in C2 frame matches local " - "active WSS.\n"); + if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))) result = 1; - } else { + else { dev_err(dev, "WLP: Received a C2 frame without matching " "WSSID.\n"); result = 0; @@ -598,8 +555,6 @@ error_resp_parse: out: wlp->session = NULL; mutex_unlock(&wlp->mutex); - d_fnend(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n", - wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]); return result; } @@ -620,16 +575,8 @@ int wlp_wss_activate_connection(struct wlp *wlp, struct wlp_wss *wss, { struct device *dev = &wlp->rc->uwb_dev.dev; int result = 0; - char buf[WLP_WSS_UUID_STRSIZE]; - wlp_wss_uuid_print(buf, sizeof(buf), wssid); - d_fnstart(5, dev, "wlp %p, wss %p, wssid %s, tag %u, virtual " - "%02x:%02x:%02x:%02x:%02x:%02x \n", wlp, wss, buf, *tag, - virt_addr->data[0], virt_addr->data[1], virt_addr->data[2], - virt_addr->data[3], virt_addr->data[4], virt_addr->data[5]); if (!memcmp(wssid, &wss->wssid, sizeof(*wssid))) { - d_printf(5, dev, "WSSID from neighbor frame matches local " - "active WSS.\n"); /* Update EDA cache */ result = wlp_eda_update_node(&wlp->eda, dev_addr, wss, (void *) virt_addr->data, *tag, @@ -638,18 +585,9 @@ int wlp_wss_activate_connection(struct wlp *wlp, struct wlp_wss *wss, dev_err(dev, "WLP: Unable to update EDA cache " "with new connected neighbor information.\n"); } else { - dev_err(dev, "WLP: Neighbor does not have matching " - "WSSID.\n"); + dev_err(dev, "WLP: Neighbor does not have matching WSSID.\n"); result = -EINVAL; } - - d_fnend(5, dev, "wlp %p, wss %p, wssid %s, tag %u, virtual " - "%02x:%02x:%02x:%02x:%02x:%02x, result = %d \n", - wlp, wss, buf, *tag, - virt_addr->data[0], virt_addr->data[1], virt_addr->data[2], - virt_addr->data[3], virt_addr->data[4], virt_addr->data[5], - result); - return result; } @@ -665,7 +603,6 @@ int wlp_wss_connect_neighbor(struct wlp *wlp, struct wlp_wss *wss, { int result; struct device *dev = &wlp->rc->uwb_dev.dev; - char buf[WLP_WSS_UUID_STRSIZE]; struct wlp_uuid wssid; u8 tag; struct uwb_mac_addr virt_addr; @@ -674,9 +611,6 @@ int wlp_wss_connect_neighbor(struct wlp *wlp, struct wlp_wss *wss, struct wlp_frame_assoc *resp; struct sk_buff *skb; - wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid); - d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n", - wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]); mutex_lock(&wlp->mutex); /* Send C3 association frame */ result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_C3); @@ -711,8 +645,6 @@ int wlp_wss_connect_neighbor(struct wlp *wlp, struct wlp_wss *wss, /* Parse message in session->data: it will be either C4 or F0 */ skb = session.data; resp = (void *) skb->data; - d_printf(5, dev, "Received response to C3 frame. \n"); - d_dump(5, dev, skb->data, skb->len > 72 ? 72 : skb->len); if (resp->type == WLP_ASSOC_F0) { result = wlp_parse_f0(wlp, skb); if (result < 0) @@ -744,8 +676,6 @@ out: WLP_WSS_CONNECT_FAILED); wlp->session = NULL; mutex_unlock(&wlp->mutex); - d_fnend(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n", - wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]); return result; } @@ -780,12 +710,8 @@ void wlp_wss_connect_send(struct work_struct *ws) struct wlp_wss *wss = &wlp->wss; int result; struct device *dev = &wlp->rc->uwb_dev.dev; - char buf[WLP_WSS_UUID_STRSIZE]; mutex_lock(&wss->mutex); - wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid); - d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n", - wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]); if (wss->state < WLP_WSS_STATE_ACTIVE) { if (printk_ratelimit()) dev_err(dev, "WLP: Attempting to connect with " @@ -836,7 +762,6 @@ out: BUG_ON(wlp->start_queue == NULL); wlp->start_queue(wlp); mutex_unlock(&wss->mutex); - d_fnend(5, dev, "wlp %p, wss %p (wssid %s)\n", wlp, wss, buf); } /** @@ -855,7 +780,6 @@ int wlp_wss_prep_hdr(struct wlp *wlp, struct wlp_eda_node *eda_entry, struct sk_buff *skb = _skb; struct wlp_frame_std_abbrv_hdr *std_hdr; - d_fnstart(6, dev, "wlp %p \n", wlp); if (eda_entry->state == WLP_WSS_CONNECTED) { /* Add WLP header */ BUG_ON(skb_headroom(skb) < sizeof(*std_hdr)); @@ -873,7 +797,6 @@ int wlp_wss_prep_hdr(struct wlp *wlp, struct wlp_eda_node *eda_entry, dev_addr->data[0]); result = -EINVAL; } - d_fnend(6, dev, "wlp %p \n", wlp); return result; } @@ -893,16 +816,9 @@ int wlp_wss_connect_prep(struct wlp *wlp, struct wlp_eda_node *eda_entry, { int result = 0; struct device *dev = &wlp->rc->uwb_dev.dev; - struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr; - unsigned char *eth_addr = eda_entry->eth_addr; struct sk_buff *skb = _skb; struct wlp_assoc_conn_ctx *conn_ctx; - d_fnstart(5, dev, "wlp %p\n", wlp); - d_printf(5, dev, "To neighbor %02x:%02x with eth " - "%02x:%02x:%02x:%02x:%02x:%02x\n", dev_addr->data[1], - dev_addr->data[0], eth_addr[0], eth_addr[1], eth_addr[2], - eth_addr[3], eth_addr[4], eth_addr[5]); if (eda_entry->state == WLP_WSS_UNCONNECTED) { /* We don't want any more packets while we set up connection */ BUG_ON(wlp->stop_queue == NULL); @@ -929,12 +845,9 @@ int wlp_wss_connect_prep(struct wlp *wlp, struct wlp_eda_node *eda_entry, "previously. Not retrying. \n"); result = -ENONET; goto out; - } else { /* eda_entry->state == WLP_WSS_CONNECTED */ - d_printf(5, dev, "Neighbor is connected, preparing frame.\n"); + } else /* eda_entry->state == WLP_WSS_CONNECTED */ result = wlp_wss_prep_hdr(wlp, eda_entry, skb); - } out: - d_fnend(5, dev, "wlp %p, result = %d \n", wlp, result); return result; } @@ -957,8 +870,6 @@ int wlp_wss_send_copy(struct wlp *wlp, struct wlp_eda_node *eda_entry, struct sk_buff *copy; struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr; - d_fnstart(5, dev, "to neighbor %02x:%02x, skb (%p) \n", - dev_addr->data[1], dev_addr->data[0], skb); copy = skb_copy(skb, GFP_ATOMIC); if (copy == NULL) { if (printk_ratelimit()) @@ -988,8 +899,6 @@ int wlp_wss_send_copy(struct wlp *wlp, struct wlp_eda_node *eda_entry, dev_kfree_skb_irq(copy);/*we need to free if tx fails */ } out: - d_fnend(5, dev, "to neighbor %02x:%02x \n", dev_addr->data[1], - dev_addr->data[0]); return result; } @@ -1005,7 +914,7 @@ int wlp_wss_setup(struct net_device *net_dev, struct wlp_wss *wss) struct wlp *wlp = container_of(wss, struct wlp, wss); struct device *dev = &wlp->rc->uwb_dev.dev; int result = 0; - d_fnstart(5, dev, "wss (%p) \n", wss); + mutex_lock(&wss->mutex); wss->kobj.parent = &net_dev->dev.kobj; if (!is_valid_ether_addr(net_dev->dev_addr)) { @@ -1018,7 +927,6 @@ int wlp_wss_setup(struct net_device *net_dev, struct wlp_wss *wss) sizeof(wss->virtual_addr.data)); out: mutex_unlock(&wss->mutex); - d_fnend(5, dev, "wss (%p) \n", wss); return result; } EXPORT_SYMBOL_GPL(wlp_wss_setup); @@ -1035,8 +943,7 @@ EXPORT_SYMBOL_GPL(wlp_wss_setup); void wlp_wss_remove(struct wlp_wss *wss) { struct wlp *wlp = container_of(wss, struct wlp, wss); - struct device *dev = &wlp->rc->uwb_dev.dev; - d_fnstart(5, dev, "wss (%p) \n", wss); + mutex_lock(&wss->mutex); if (wss->state == WLP_WSS_STATE_ACTIVE) uwb_rc_ie_rm(wlp->rc, UWB_IE_WLP); @@ -1050,6 +957,5 @@ void wlp_wss_remove(struct wlp_wss *wss) wlp_eda_release(&wlp->eda); wlp_eda_init(&wlp->eda); mutex_unlock(&wss->mutex); - d_fnend(5, dev, "wss (%p) \n", wss); } EXPORT_SYMBOL_GPL(wlp_wss_remove); -- cgit v1.2.3 From e43ace891229607c43d35597cbba77c2e40f48d4 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 22 Dec 2008 18:27:17 +0000 Subject: uwb: use print_hex_dump() Use print_hex_dump() instead of the home-grown dump_bytes(). Signed-off-by: David Vrabel --- drivers/uwb/uwb-debug.c | 21 +-------------------- 1 file changed, 1 insertion(+), 20 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c index 89b2e6a7214..4a42993700c 100644 --- a/drivers/uwb/uwb-debug.c +++ b/drivers/uwb/uwb-debug.c @@ -4,6 +4,7 @@ * * Copyright (C) 2005-2006 Intel Corporation * Inaky Perez-Gonzalez + * Copyright (C) 2008 Cambridge Silicon Radio Ltd. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version @@ -36,26 +37,6 @@ #include "uwb-internal.h" -void dump_bytes(struct device *dev, const void *_buf, size_t rsize) -{ - const char *buf = _buf; - char line[32]; - size_t offset = 0; - int cnt, cnt2; - for (cnt = 0; cnt < rsize; cnt += 8) { - size_t rtop = rsize - cnt < 8 ? rsize - cnt : 8; - for (offset = cnt2 = 0; cnt2 < rtop; cnt2++) { - offset += scnprintf(line + offset, sizeof(line) - offset, - "%02x ", buf[cnt + cnt2] & 0xff); - } - if (dev) - dev_info(dev, "%s\n", line); - else - printk(KERN_INFO "%s\n", line); - } -} -EXPORT_SYMBOL_GPL(dump_bytes); - /* * Debug interface * -- cgit v1.2.3 From a01777ecf227de735d7e525ecda48fe74b838a17 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 22 Dec 2008 18:30:29 +0000 Subject: uwb: remove unused include/linux/uwb/debug.h Signed-off-by: David Vrabel --- drivers/uwb/address.c | 2 +- drivers/uwb/driver.c | 2 +- drivers/uwb/i1480/i1480u-wlp/lc.c | 2 +- drivers/uwb/i1480/i1480u-wlp/netdev.c | 2 +- drivers/uwb/i1480/i1480u-wlp/sysfs.c | 2 +- 5 files changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/address.c b/drivers/uwb/address.c index 1664ae5f170..ad21b1d7218 100644 --- a/drivers/uwb/address.c +++ b/drivers/uwb/address.c @@ -28,7 +28,7 @@ #include #include #include -#include + #include "uwb-internal.h" diff --git a/drivers/uwb/driver.c b/drivers/uwb/driver.c index f57c26580de..da77e41de99 100644 --- a/drivers/uwb/driver.c +++ b/drivers/uwb/driver.c @@ -53,7 +53,7 @@ #include #include #include -#include + #include "uwb-internal.h" diff --git a/drivers/uwb/i1480/i1480u-wlp/lc.c b/drivers/uwb/i1480/i1480u-wlp/lc.c index 488b2e30a0a..049c05d4cc6 100644 --- a/drivers/uwb/i1480/i1480u-wlp/lc.c +++ b/drivers/uwb/i1480/i1480u-wlp/lc.c @@ -57,7 +57,7 @@ */ #include #include -#include + #include "i1480u-wlp.h" diff --git a/drivers/uwb/i1480/i1480u-wlp/netdev.c b/drivers/uwb/i1480/i1480u-wlp/netdev.c index 2eafb973cd0..e3873ffb942 100644 --- a/drivers/uwb/i1480/i1480u-wlp/netdev.c +++ b/drivers/uwb/i1480/i1480u-wlp/netdev.c @@ -41,7 +41,7 @@ #include #include -#include + #include "i1480u-wlp.h" struct i1480u_cmd_set_ip_mas { diff --git a/drivers/uwb/i1480/i1480u-wlp/sysfs.c b/drivers/uwb/i1480/i1480u-wlp/sysfs.c index a92a787725f..4ffaf546cc6 100644 --- a/drivers/uwb/i1480/i1480u-wlp/sysfs.c +++ b/drivers/uwb/i1480/i1480u-wlp/sysfs.c @@ -25,8 +25,8 @@ #include #include -#include #include + #include "i1480u-wlp.h" -- cgit v1.2.3 From 3af373021fa32f8f787bfbdcc1a9277a287bde4e Mon Sep 17 00:00:00 2001 From: Stefano Panella Date: Tue, 23 Dec 2008 12:31:09 +0000 Subject: uwb: remove beacon cache entry after calling uwb_notify() Removing the beacon cache entry from a uwb_dev can cause an oops if the bce is released before the call to uwb_notify(). Signed-off-by: Stefano Panella Signed-off-by: David Vrabel --- drivers/uwb/beacon.c | 2 -- drivers/uwb/lc-dev.c | 2 ++ 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/uwb') diff --git a/drivers/uwb/beacon.c b/drivers/uwb/beacon.c index 0315093e221..36bc3158006 100644 --- a/drivers/uwb/beacon.c +++ b/drivers/uwb/beacon.c @@ -289,8 +289,6 @@ void uwb_beca_purge(struct uwb_rc *rc) expires = bce->ts_jiffies + msecs_to_jiffies(beacon_timeout_ms); if (time_after(jiffies, expires)) { uwbd_dev_offair(bce); - list_del(&bce->node); - uwb_bce_put(bce); } } mutex_unlock(&rc->uwb_beca.mutex); diff --git a/drivers/uwb/lc-dev.c b/drivers/uwb/lc-dev.c index f78087b8591..e9fe1bb7eb2 100644 --- a/drivers/uwb/lc-dev.c +++ b/drivers/uwb/lc-dev.c @@ -375,6 +375,8 @@ int __uwb_dev_offair(struct uwb_dev *uwb_dev, struct uwb_rc *rc) rc ? rc->uwb_dev.dev.parent->bus->name : "n/a", rc ? dev_name(rc->uwb_dev.dev.parent) : ""); uwb_dev_rm(uwb_dev); + list_del(&uwb_dev->bce->node); + uwb_bce_put(uwb_dev->bce); uwb_dev_put(uwb_dev); /* for the creation in _onair() */ return 0; -- cgit v1.2.3