aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wireless/libertas/scan.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/libertas/scan.c')
-rw-r--r--drivers/net/wireless/libertas/scan.c145
1 files changed, 67 insertions, 78 deletions
diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c
index 99f11a56d84..0598541451d 100644
--- a/drivers/net/wireless/libertas/scan.c
+++ b/drivers/net/wireless/libertas/scan.c
@@ -260,24 +260,12 @@ done:
-
/*********************************************************************/
/* */
/* Main scanning support */
/* */
/*********************************************************************/
-void lbs_scan_worker(struct work_struct *work)
-{
- struct lbs_private *priv =
- container_of(work, struct lbs_private, scan_work.work);
-
- lbs_deb_enter(LBS_DEB_SCAN);
- lbs_scan_networks(priv, NULL, 0);
- lbs_deb_leave(LBS_DEB_SCAN);
-}
-
-
/**
* @brief Create a channel list for the driver to scan based on region info
*
@@ -289,17 +277,11 @@ void lbs_scan_worker(struct work_struct *work)
*
* @param priv A pointer to struct lbs_private structure
* @param scanchanlist Output parameter: resulting channel list to scan
- * @param filteredscan Flag indicating whether or not a BSSID or SSID filter
- * is being sent in the command to firmware. Used to
- * increase the number of channels sent in a scan
- * command and to disable the firmware channel scan
- * filter.
*
* @return void
*/
static int lbs_scan_create_channel_list(struct lbs_private *priv,
- struct chanscanparamset *scanchanlist,
- uint8_t filteredscan)
+ struct chanscanparamset *scanchanlist)
{
struct region_channel *scanregion;
struct chan_freq_power *cfp;
@@ -354,9 +336,6 @@ static int lbs_scan_create_channel_list(struct lbs_private *priv,
}
chan->channumber = cfp->channel;
-
- if (filteredscan)
- chan->chanscanmode.disablechanfilt = 1;
}
}
return chanidx;
@@ -370,15 +349,14 @@ static int lbs_scan_create_channel_list(struct lbs_private *priv,
* length 06 00
* ssid 4d 4e 54 45 53 54
*/
-static int lbs_scan_add_ssid_tlv(uint8_t *tlv,
- const struct lbs_ioctl_user_scan_cfg *user_cfg)
+static int lbs_scan_add_ssid_tlv(struct lbs_private *priv, u8 *tlv)
{
struct mrvlietypes_ssidparamset *ssid_tlv = (void *)tlv;
ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
- ssid_tlv->header.len = cpu_to_le16(user_cfg->ssid_len);
- memcpy(ssid_tlv->ssid, user_cfg->ssid, user_cfg->ssid_len);
- return sizeof(ssid_tlv->header) + user_cfg->ssid_len;
+ ssid_tlv->header.len = cpu_to_le16(priv->scan_ssid_len);
+ memcpy(ssid_tlv->ssid, priv->scan_ssid, priv->scan_ssid_len);
+ return sizeof(ssid_tlv->header) + priv->scan_ssid_len;
}
@@ -461,8 +439,7 @@ static int lbs_scan_add_rates_tlv(uint8_t *tlv)
* for a bunch of channels.
*/
static int lbs_do_scan(struct lbs_private *priv, uint8_t bsstype,
- struct chanscanparamset *chan_list, int chan_count,
- const struct lbs_ioctl_user_scan_cfg *user_cfg)
+ struct chanscanparamset *chan_list, int chan_count)
{
int ret = -ENOMEM;
struct cmd_ds_802_11_scan *scan_cmd;
@@ -477,13 +454,13 @@ static int lbs_do_scan(struct lbs_private *priv, uint8_t bsstype,
goto out;
tlv = scan_cmd->tlvbuffer;
- if (user_cfg)
- memcpy(scan_cmd->bssid, user_cfg->bssid, ETH_ALEN);
+ /* TODO: do we need to scan for a specific BSSID?
+ memcpy(scan_cmd->bssid, priv->scan_bssid, ETH_ALEN); */
scan_cmd->bsstype = bsstype;
/* add TLVs */
- if (user_cfg && user_cfg->ssid_len)
- tlv += lbs_scan_add_ssid_tlv(tlv, user_cfg);
+ if (priv->scan_ssid_len)
+ tlv += lbs_scan_add_ssid_tlv(priv, tlv);
if (chan_list && chan_count)
tlv += lbs_scan_add_chanlist_tlv(tlv, chan_list, chan_count);
tlv += lbs_scan_add_rates_tlv(tlv);
@@ -516,14 +493,11 @@ out:
* update the internal driver scan table
*
* @param priv A pointer to struct lbs_private structure
- * @param puserscanin Pointer to the input configuration for the requested
- * scan.
+ * @param full_scan Do a full-scan (blocking)
*
* @return 0 or < 0 if error
*/
-int lbs_scan_networks(struct lbs_private *priv,
- const struct lbs_ioctl_user_scan_cfg *user_cfg,
- int full_scan)
+static int lbs_scan_networks(struct lbs_private *priv, int full_scan)
{
int ret = -ENOMEM;
struct chanscanparamset *chan_list;
@@ -531,7 +505,6 @@ int lbs_scan_networks(struct lbs_private *priv,
int chan_count;
uint8_t bsstype = CMD_BSS_TYPE_ANY;
int numchannels = MRVDRV_CHANNELS_PER_SCAN_CMD;
- int filteredscan = 0;
union iwreq_data wrqu;
#ifdef CONFIG_LIBERTAS_DEBUG
struct bss_descriptor *iter;
@@ -547,17 +520,16 @@ int lbs_scan_networks(struct lbs_private *priv,
if (full_scan && delayed_work_pending(&priv->scan_work))
cancel_delayed_work(&priv->scan_work);
- /* Determine same scan parameters */
+ /* User-specified bsstype or channel list
+ TODO: this can be implemented if some user-space application
+ need the feature. Formerly, it was accessible from debugfs,
+ but then nowhere used.
if (user_cfg) {
if (user_cfg->bsstype)
- bsstype = user_cfg->bsstype;
- if (!is_zero_ether_addr(user_cfg->bssid)) {
- numchannels = MRVDRV_MAX_CHANNELS_PER_SCAN;
- filteredscan = 1;
- }
- }
- lbs_deb_scan("numchannels %d, bsstype %d, filteredscan %d\n",
- numchannels, bsstype, filteredscan);
+ bsstype = user_cfg->bsstype;
+ } */
+
+ lbs_deb_scan("numchannels %d, bsstype %d\n", numchannels, bsstype);
/* Create list of channels to scan */
chan_list = kzalloc(sizeof(struct chanscanparamset) *
@@ -568,7 +540,7 @@ int lbs_scan_networks(struct lbs_private *priv,
}
/* We want to scan all channels */
- chan_count = lbs_scan_create_channel_list(priv, chan_list, filteredscan);
+ chan_count = lbs_scan_create_channel_list(priv, chan_list);
netif_stop_queue(priv->dev);
netif_carrier_off(priv->dev);
@@ -597,7 +569,7 @@ int lbs_scan_networks(struct lbs_private *priv,
lbs_deb_scan("scanning %d of %d channels\n",
to_scan, chan_count);
ret = lbs_do_scan(priv, bsstype, curr_chans,
- to_scan, user_cfg);
+ to_scan);
if (ret) {
lbs_pr_err("SCAN_CMD failed\n");
goto out2;
@@ -658,6 +630,17 @@ out:
+void lbs_scan_worker(struct work_struct *work)
+{
+ struct lbs_private *priv =
+ container_of(work, struct lbs_private, scan_work.work);
+
+ lbs_deb_enter(LBS_DEB_SCAN);
+ lbs_scan_networks(priv, 0);
+ lbs_deb_leave(LBS_DEB_SCAN);
+}
+
+
/*********************************************************************/
/* */
/* Result interpretation */
@@ -1068,7 +1051,7 @@ static struct bss_descriptor *lbs_find_best_ssid_in_list(struct lbs_private *pri
}
/**
- * @brief Find the AP with specific ssid in the scan list
+ * @brief Find the best AP
*
* Used from association worker.
*
@@ -1086,7 +1069,8 @@ int lbs_find_best_network_ssid(struct lbs_private *priv, uint8_t *out_ssid,
lbs_deb_enter(LBS_DEB_SCAN);
- lbs_scan_networks(priv, NULL, 1);
+ priv->scan_ssid_len = 0;
+ lbs_scan_networks(priv, 1);
if (priv->surpriseremoved)
goto out;
@@ -1112,29 +1096,24 @@ out:
* @param priv A pointer to struct lbs_private structure
* @param ssid A pointer to the SSID to scan for
* @param ssid_len Length of the SSID
- * @param clear_ssid Should existing scan results with this SSID
- * be cleared?
*
* @return 0-success, otherwise fail
*/
int lbs_send_specific_ssid_scan(struct lbs_private *priv, uint8_t *ssid,
- uint8_t ssid_len, uint8_t clear_ssid)
+ uint8_t ssid_len)
{
- struct lbs_ioctl_user_scan_cfg scancfg;
int ret = 0;
- lbs_deb_enter_args(LBS_DEB_SCAN, "SSID '%s', clear %d",
- escape_essid(ssid, ssid_len), clear_ssid);
+ lbs_deb_enter_args(LBS_DEB_SCAN, "SSID '%s'\n",
+ escape_essid(ssid, ssid_len));
if (!ssid_len)
goto out;
- memset(&scancfg, 0x00, sizeof(scancfg));
- memcpy(scancfg.ssid, ssid, ssid_len);
- scancfg.ssid_len = ssid_len;
- scancfg.clear_ssid = clear_ssid;
+ memcpy(priv->scan_ssid, ssid, ssid_len);
+ priv->scan_ssid_len = ssid_len;
- lbs_scan_networks(priv, &scancfg, 1);
+ lbs_scan_networks(priv, 1);
if (priv->surpriseremoved) {
ret = -1;
goto out;
@@ -1317,27 +1296,36 @@ out:
* @return 0 --success, otherwise fail
*/
int lbs_set_scan(struct net_device *dev, struct iw_request_info *info,
- struct iw_param *wrqu, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
struct lbs_private *priv = dev->priv;
+ int ret = 0;
- lbs_deb_enter(LBS_DEB_SCAN);
+ lbs_deb_enter(LBS_DEB_WEXT);
- if (!netif_running(dev))
- return -ENETDOWN;
+ if (!netif_running(dev)) {
+ ret = -ENETDOWN;
+ goto out;
+ }
/* mac80211 does this:
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->type != IEEE80211_IF_TYPE_xxx)
- return -EOPNOTSUPP;
+ if (sdata->type != IEEE80211_IF_TYPE_xxx) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+ */
if (wrqu->data.length == sizeof(struct iw_scan_req) &&
wrqu->data.flags & IW_SCAN_THIS_ESSID) {
- req = (struct iw_scan_req *)extra;
- ssid = req->essid;
- ssid_len = req->essid_len;
+ struct iw_scan_req *req = (struct iw_scan_req *)extra;
+ priv->scan_ssid_len = req->essid_len;
+ memcpy(priv->scan_ssid, req->essid, priv->scan_ssid_len);
+ lbs_deb_wext("set_scan, essid '%s'\n",
+ escape_essid(priv->scan_ssid, priv->scan_ssid_len));
+ } else {
+ priv->scan_ssid_len = 0;
}
- */
if (!delayed_work_pending(&priv->scan_work))
queue_delayed_work(priv->work_thread, &priv->scan_work,
@@ -1346,10 +1334,11 @@ int lbs_set_scan(struct net_device *dev, struct iw_request_info *info,
priv->scan_channel = -1;
if (priv->surpriseremoved)
- return -EIO;
+ ret = -EIO;
- lbs_deb_leave(LBS_DEB_SCAN);
- return 0;
+out:
+ lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", ret);
+ return ret;
}
@@ -1374,7 +1363,7 @@ int lbs_get_scan(struct net_device *dev, struct iw_request_info *info,
struct bss_descriptor *iter_bss;
struct bss_descriptor *safe;
- lbs_deb_enter(LBS_DEB_SCAN);
+ lbs_deb_enter(LBS_DEB_WEXT);
/* iwlist should wait until the current scan is finished */
if (priv->scan_channel)
@@ -1418,7 +1407,7 @@ int lbs_get_scan(struct net_device *dev, struct iw_request_info *info,
dwrq->length = (ev - extra);
dwrq->flags = 0;
- lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", err);
+ lbs_deb_leave_args(LBS_DEB_WEXT, "ret %d", err);
return err;
}