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-rw-r--r--net/mac80211/util.c466
1 files changed, 350 insertions, 116 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 4e97b266f90..cee4884b9d0 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -43,76 +43,67 @@ const unsigned char bridge_tunnel_header[] __aligned(2) =
u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
- enum ieee80211_if_types type)
+ enum nl80211_iftype type)
{
- u16 fc;
+ __le16 fc = hdr->frame_control;
/* drop ACK/CTS frames and incorrect hdr len (ctrl) */
if (len < 16)
return NULL;
- fc = le16_to_cpu(hdr->frame_control);
-
- switch (fc & IEEE80211_FCTL_FTYPE) {
- case IEEE80211_FTYPE_DATA:
+ if (ieee80211_is_data(fc)) {
if (len < 24) /* drop incorrect hdr len (data) */
return NULL;
- switch (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
- case IEEE80211_FCTL_TODS:
- return hdr->addr1;
- case (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
+
+ if (ieee80211_has_a4(fc))
return NULL;
- case IEEE80211_FCTL_FROMDS:
+ if (ieee80211_has_tods(fc))
+ return hdr->addr1;
+ if (ieee80211_has_fromds(fc))
return hdr->addr2;
- case 0:
- return hdr->addr3;
- }
- break;
- case IEEE80211_FTYPE_MGMT:
+
+ return hdr->addr3;
+ }
+
+ if (ieee80211_is_mgmt(fc)) {
if (len < 24) /* drop incorrect hdr len (mgmt) */
return NULL;
return hdr->addr3;
- case IEEE80211_FTYPE_CTL:
- if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)
+ }
+
+ if (ieee80211_is_ctl(fc)) {
+ if(ieee80211_is_pspoll(fc))
return hdr->addr1;
- else if ((fc & IEEE80211_FCTL_STYPE) ==
- IEEE80211_STYPE_BACK_REQ) {
+
+ if (ieee80211_is_back_req(fc)) {
switch (type) {
- case IEEE80211_IF_TYPE_STA:
+ case NL80211_IFTYPE_STATION:
return hdr->addr2;
- case IEEE80211_IF_TYPE_AP:
- case IEEE80211_IF_TYPE_VLAN:
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_AP_VLAN:
return hdr->addr1;
default:
- return NULL;
+ break; /* fall through to the return */
}
}
- else
- return NULL;
}
return NULL;
}
-int ieee80211_get_hdrlen(u16 fc)
+unsigned int ieee80211_hdrlen(__le16 fc)
{
- int hdrlen = 24;
+ unsigned int hdrlen = 24;
+
+ if (ieee80211_is_data(fc)) {
+ if (ieee80211_has_a4(fc))
+ hdrlen = 30;
+ if (ieee80211_is_data_qos(fc))
+ hdrlen += IEEE80211_QOS_CTL_LEN;
+ goto out;
+ }
- switch (fc & IEEE80211_FCTL_FTYPE) {
- case IEEE80211_FTYPE_DATA:
- if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
- hdrlen = 30; /* Addr4 */
- /*
- * The QoS Control field is two bytes and its presence is
- * indicated by the IEEE80211_STYPE_QOS_DATA bit. Add 2 to
- * hdrlen if that bit is set.
- * This works by masking out the bit and shifting it to
- * bit position 1 so the result has the value 0 or 2.
- */
- hdrlen += (fc & IEEE80211_STYPE_QOS_DATA)
- >> (ilog2(IEEE80211_STYPE_QOS_DATA)-1);
- break;
- case IEEE80211_FTYPE_CTL:
+ if (ieee80211_is_ctl(fc)) {
/*
* ACK and CTS are 10 bytes, all others 16. To see how
* to get this condition consider
@@ -122,25 +113,24 @@ int ieee80211_get_hdrlen(u16 fc)
* bits that matter: ^^^ (0x00E0)
* value of those: 0b0000000011000000 (0x00C0)
*/
- if ((fc & 0xE0) == 0xC0)
+ if ((fc & cpu_to_le16(0x00E0)) == cpu_to_le16(0x00C0))
hdrlen = 10;
else
hdrlen = 16;
- break;
}
-
+out:
return hdrlen;
}
-EXPORT_SYMBOL(ieee80211_get_hdrlen);
+EXPORT_SYMBOL(ieee80211_hdrlen);
-int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
+unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
{
- const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *) skb->data;
- int hdrlen;
+ const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *)skb->data;
+ unsigned int hdrlen;
if (unlikely(skb->len < 10))
return 0;
- hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
if (unlikely(hdrlen > skb->len))
return 0;
return hdrlen;
@@ -241,16 +231,21 @@ __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
struct ieee80211_rate *rate)
{
struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+ struct ieee80211_sub_if_data *sdata;
u16 dur;
int erp;
+ bool short_preamble = false;
erp = 0;
- if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
- erp = rate->flags & IEEE80211_RATE_ERP_G;
+ if (vif) {
+ sdata = vif_to_sdata(vif);
+ short_preamble = sdata->bss_conf.use_short_preamble;
+ if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
+ erp = rate->flags & IEEE80211_RATE_ERP_G;
+ }
dur = ieee80211_frame_duration(local, frame_len, rate->bitrate, erp,
- sdata->bss_conf.use_short_preamble);
+ short_preamble);
return cpu_to_le16(dur);
}
@@ -258,22 +253,29 @@ EXPORT_SYMBOL(ieee80211_generic_frame_duration);
__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, size_t frame_len,
- const struct ieee80211_tx_control *frame_txctl)
+ const struct ieee80211_tx_info *frame_txctl)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_rate *rate;
- struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+ struct ieee80211_sub_if_data *sdata;
bool short_preamble;
int erp;
u16 dur;
+ struct ieee80211_supported_band *sband;
- short_preamble = sdata->bss_conf.use_short_preamble;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- rate = frame_txctl->rts_cts_rate;
+ short_preamble = false;
+
+ rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
erp = 0;
- if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
- erp = rate->flags & IEEE80211_RATE_ERP_G;
+ if (vif) {
+ sdata = vif_to_sdata(vif);
+ short_preamble = sdata->bss_conf.use_short_preamble;
+ if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
+ erp = rate->flags & IEEE80211_RATE_ERP_G;
+ }
/* CTS duration */
dur = ieee80211_frame_duration(local, 10, rate->bitrate,
@@ -292,26 +294,33 @@ EXPORT_SYMBOL(ieee80211_rts_duration);
__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
size_t frame_len,
- const struct ieee80211_tx_control *frame_txctl)
+ const struct ieee80211_tx_info *frame_txctl)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_rate *rate;
- struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+ struct ieee80211_sub_if_data *sdata;
bool short_preamble;
int erp;
u16 dur;
+ struct ieee80211_supported_band *sband;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- short_preamble = sdata->bss_conf.use_short_preamble;
+ short_preamble = false;
- rate = frame_txctl->rts_cts_rate;
+ rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
erp = 0;
- if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
- erp = rate->flags & IEEE80211_RATE_ERP_G;
+ if (vif) {
+ sdata = vif_to_sdata(vif);
+ short_preamble = sdata->bss_conf.use_short_preamble;
+ if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
+ erp = rate->flags & IEEE80211_RATE_ERP_G;
+ }
/* Data frame duration */
dur = ieee80211_frame_duration(local, frame_len, rate->bitrate,
erp, short_preamble);
- if (!(frame_txctl->flags & IEEE80211_TXCTL_NO_ACK)) {
+ if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
/* ACK duration */
dur += ieee80211_frame_duration(local, 10, rate->bitrate,
erp, short_preamble);
@@ -325,17 +334,11 @@ void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
{
struct ieee80211_local *local = hw_to_local(hw);
- if (test_and_clear_bit(IEEE80211_LINK_STATE_XOFF,
- &local->state[queue])) {
- if (test_bit(IEEE80211_LINK_STATE_PENDING,
- &local->state[queue]))
- tasklet_schedule(&local->tx_pending_tasklet);
- else
- if (!ieee80211_qdisc_installed(local->mdev)) {
- if (queue == 0)
- netif_wake_queue(local->mdev);
- } else
- __netif_schedule(local->mdev);
+ if (test_bit(queue, local->queues_pending)) {
+ set_bit(queue, local->queues_pending_run);
+ tasklet_schedule(&local->tx_pending_tasklet);
+ } else {
+ netif_wake_subqueue(local->mdev, queue);
}
}
EXPORT_SYMBOL(ieee80211_wake_queue);
@@ -344,38 +347,31 @@ void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
{
struct ieee80211_local *local = hw_to_local(hw);
- if (!ieee80211_qdisc_installed(local->mdev) && queue == 0)
- netif_stop_queue(local->mdev);
- set_bit(IEEE80211_LINK_STATE_XOFF, &local->state[queue]);
+ netif_stop_subqueue(local->mdev, queue);
}
EXPORT_SYMBOL(ieee80211_stop_queue);
-void ieee80211_start_queues(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- int i;
-
- for (i = 0; i < local->hw.queues; i++)
- clear_bit(IEEE80211_LINK_STATE_XOFF, &local->state[i]);
- if (!ieee80211_qdisc_installed(local->mdev))
- netif_start_queue(local->mdev);
-}
-EXPORT_SYMBOL(ieee80211_start_queues);
-
void ieee80211_stop_queues(struct ieee80211_hw *hw)
{
int i;
- for (i = 0; i < hw->queues; i++)
+ for (i = 0; i < ieee80211_num_queues(hw); i++)
ieee80211_stop_queue(hw, i);
}
EXPORT_SYMBOL(ieee80211_stop_queues);
+int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ return __netif_subqueue_stopped(local->mdev, queue);
+}
+EXPORT_SYMBOL(ieee80211_queue_stopped);
+
void ieee80211_wake_queues(struct ieee80211_hw *hw)
{
int i;
- for (i = 0; i < hw->queues; i++)
+ for (i = 0; i < hw->queues + hw->ampdu_queues; i++)
ieee80211_wake_queue(hw, i);
}
EXPORT_SYMBOL(ieee80211_wake_queues);
@@ -393,19 +389,18 @@ void ieee80211_iterate_active_interfaces(
list_for_each_entry(sdata, &local->interfaces, list) {
switch (sdata->vif.type) {
- case IEEE80211_IF_TYPE_INVALID:
- case IEEE80211_IF_TYPE_MNTR:
- case IEEE80211_IF_TYPE_VLAN:
+ case __NL80211_IFTYPE_AFTER_LAST:
+ case NL80211_IFTYPE_UNSPECIFIED:
+ case NL80211_IFTYPE_MONITOR:
+ case NL80211_IFTYPE_AP_VLAN:
continue;
- case IEEE80211_IF_TYPE_AP:
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_IBSS:
- case IEEE80211_IF_TYPE_WDS:
- case IEEE80211_IF_TYPE_MESH_POINT:
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_ADHOC:
+ case NL80211_IFTYPE_WDS:
+ case NL80211_IFTYPE_MESH_POINT:
break;
}
- if (sdata->dev == local->mdev)
- continue;
if (netif_running(sdata->dev))
iterator(data, sdata->dev->dev_addr,
&sdata->vif);
@@ -428,19 +423,18 @@ void ieee80211_iterate_active_interfaces_atomic(
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
switch (sdata->vif.type) {
- case IEEE80211_IF_TYPE_INVALID:
- case IEEE80211_IF_TYPE_MNTR:
- case IEEE80211_IF_TYPE_VLAN:
+ case __NL80211_IFTYPE_AFTER_LAST:
+ case NL80211_IFTYPE_UNSPECIFIED:
+ case NL80211_IFTYPE_MONITOR:
+ case NL80211_IFTYPE_AP_VLAN:
continue;
- case IEEE80211_IF_TYPE_AP:
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_IBSS:
- case IEEE80211_IF_TYPE_WDS:
- case IEEE80211_IF_TYPE_MESH_POINT:
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_ADHOC:
+ case NL80211_IFTYPE_WDS:
+ case NL80211_IFTYPE_MESH_POINT:
break;
}
- if (sdata->dev == local->mdev)
- continue;
if (netif_running(sdata->dev))
iterator(data, sdata->dev->dev_addr,
&sdata->vif);
@@ -449,3 +443,243 @@ void ieee80211_iterate_active_interfaces_atomic(
rcu_read_unlock();
}
EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
+
+void ieee802_11_parse_elems(u8 *start, size_t len,
+ struct ieee802_11_elems *elems)
+{
+ size_t left = len;
+ u8 *pos = start;
+
+ memset(elems, 0, sizeof(*elems));
+ elems->ie_start = start;
+ elems->total_len = len;
+
+ while (left >= 2) {
+ u8 id, elen;
+
+ id = *pos++;
+ elen = *pos++;
+ left -= 2;
+
+ if (elen > left)
+ return;
+
+ switch (id) {
+ case WLAN_EID_SSID:
+ elems->ssid = pos;
+ elems->ssid_len = elen;
+ break;
+ case WLAN_EID_SUPP_RATES:
+ elems->supp_rates = pos;
+ elems->supp_rates_len = elen;
+ break;
+ case WLAN_EID_FH_PARAMS:
+ elems->fh_params = pos;
+ elems->fh_params_len = elen;
+ break;
+ case WLAN_EID_DS_PARAMS:
+ elems->ds_params = pos;
+ elems->ds_params_len = elen;
+ break;
+ case WLAN_EID_CF_PARAMS:
+ elems->cf_params = pos;
+ elems->cf_params_len = elen;
+ break;
+ case WLAN_EID_TIM:
+ elems->tim = pos;
+ elems->tim_len = elen;
+ break;
+ case WLAN_EID_IBSS_PARAMS:
+ elems->ibss_params = pos;
+ elems->ibss_params_len = elen;
+ break;
+ case WLAN_EID_CHALLENGE:
+ elems->challenge = pos;
+ elems->challenge_len = elen;
+ break;
+ case WLAN_EID_WPA:
+ if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
+ pos[2] == 0xf2) {
+ /* Microsoft OUI (00:50:F2) */
+ if (pos[3] == 1) {
+ /* OUI Type 1 - WPA IE */
+ elems->wpa = pos;
+ elems->wpa_len = elen;
+ } else if (elen >= 5 && pos[3] == 2) {
+ if (pos[4] == 0) {
+ elems->wmm_info = pos;
+ elems->wmm_info_len = elen;
+ } else if (pos[4] == 1) {
+ elems->wmm_param = pos;
+ elems->wmm_param_len = elen;
+ }
+ }
+ }
+ break;
+ case WLAN_EID_RSN:
+ elems->rsn = pos;
+ elems->rsn_len = elen;
+ break;
+ case WLAN_EID_ERP_INFO:
+ elems->erp_info = pos;
+ elems->erp_info_len = elen;
+ break;
+ case WLAN_EID_EXT_SUPP_RATES:
+ elems->ext_supp_rates = pos;
+ elems->ext_supp_rates_len = elen;
+ break;
+ case WLAN_EID_HT_CAPABILITY:
+ if (elen >= sizeof(struct ieee80211_ht_cap))
+ elems->ht_cap_elem = (void *)pos;
+ break;
+ case WLAN_EID_HT_EXTRA_INFO:
+ if (elen >= sizeof(struct ieee80211_ht_addt_info))
+ elems->ht_info_elem = (void *)pos;
+ break;
+ case WLAN_EID_MESH_ID:
+ elems->mesh_id = pos;
+ elems->mesh_id_len = elen;
+ break;
+ case WLAN_EID_MESH_CONFIG:
+ elems->mesh_config = pos;
+ elems->mesh_config_len = elen;
+ break;
+ case WLAN_EID_PEER_LINK:
+ elems->peer_link = pos;
+ elems->peer_link_len = elen;
+ break;
+ case WLAN_EID_PREQ:
+ elems->preq = pos;
+ elems->preq_len = elen;
+ break;
+ case WLAN_EID_PREP:
+ elems->prep = pos;
+ elems->prep_len = elen;
+ break;
+ case WLAN_EID_PERR:
+ elems->perr = pos;
+ elems->perr_len = elen;
+ break;
+ case WLAN_EID_CHANNEL_SWITCH:
+ elems->ch_switch_elem = pos;
+ elems->ch_switch_elem_len = elen;
+ break;
+ case WLAN_EID_QUIET:
+ if (!elems->quiet_elem) {
+ elems->quiet_elem = pos;
+ elems->quiet_elem_len = elen;
+ }
+ elems->num_of_quiet_elem++;
+ break;
+ case WLAN_EID_COUNTRY:
+ elems->country_elem = pos;
+ elems->country_elem_len = elen;
+ break;
+ case WLAN_EID_PWR_CONSTRAINT:
+ elems->pwr_constr_elem = pos;
+ elems->pwr_constr_elem_len = elen;
+ break;
+ default:
+ break;
+ }
+
+ left -= elen;
+ pos += elen;
+ }
+}
+
+void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_tx_queue_params qparam;
+ int i;
+
+ if (!local->ops->conf_tx)
+ return;
+
+ memset(&qparam, 0, sizeof(qparam));
+
+ qparam.aifs = 2;
+
+ if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+ !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
+ qparam.cw_min = 31;
+ else
+ qparam.cw_min = 15;
+
+ qparam.cw_max = 1023;
+ qparam.txop = 0;
+
+ for (i = 0; i < local_to_hw(local)->queues; i++)
+ local->ops->conf_tx(local_to_hw(local), i, &qparam);
+}
+
+void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
+ int encrypt)
+{
+ skb->dev = sdata->local->mdev;
+ skb_set_mac_header(skb, 0);
+ skb_set_network_header(skb, 0);
+ skb_set_transport_header(skb, 0);
+
+ skb->iif = sdata->dev->ifindex;
+ skb->do_not_encrypt = !encrypt;
+
+ dev_queue_xmit(skb);
+}
+
+int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freqMHz)
+{
+ int ret = -EINVAL;
+ struct ieee80211_channel *chan;
+ struct ieee80211_local *local = sdata->local;
+
+ chan = ieee80211_get_channel(local->hw.wiphy, freqMHz);
+
+ if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) {
+ if (sdata->vif.type == NL80211_IFTYPE_ADHOC &&
+ chan->flags & IEEE80211_CHAN_NO_IBSS) {
+ printk(KERN_DEBUG "%s: IBSS not allowed on frequency "
+ "%d MHz\n", sdata->dev->name, chan->center_freq);
+ return ret;
+ }
+ local->oper_channel = chan;
+
+ if (local->sw_scanning || local->hw_scanning)
+ ret = 0;
+ else
+ ret = ieee80211_hw_config(local);
+
+ rate_control_clear(local);
+ }
+
+ return ret;
+}
+
+u64 ieee80211_mandatory_rates(struct ieee80211_local *local,
+ enum ieee80211_band band)
+{
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_rate *bitrates;
+ u64 mandatory_rates;
+ enum ieee80211_rate_flags mandatory_flag;
+ int i;
+
+ sband = local->hw.wiphy->bands[band];
+ if (!sband) {
+ WARN_ON(1);
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ }
+
+ if (band == IEEE80211_BAND_2GHZ)
+ mandatory_flag = IEEE80211_RATE_MANDATORY_B;
+ else
+ mandatory_flag = IEEE80211_RATE_MANDATORY_A;
+
+ bitrates = sband->bitrates;
+ mandatory_rates = 0;
+ for (i = 0; i < sband->n_bitrates; i++)
+ if (bitrates[i].flags & mandatory_flag)
+ mandatory_rates |= BIT(i);
+ return mandatory_rates;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-31 23:58:04 +0000