summaryrefslogtreecommitdiff
path: root/net/mac80211/mlme.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/mac80211/mlme.c')
-rw-r--r--net/mac80211/mlme.c173
1 files changed, 116 insertions, 57 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index b6c163ac22da..a3a9421555af 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -54,6 +54,12 @@
*/
#define IEEE80211_SIGNAL_AVE_WEIGHT 3
+/*
+ * How many Beacon frames need to have been used in average signal strength
+ * before starting to indicate signal change events.
+ */
+#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
+
#define TMR_RUNNING_TIMER 0
#define TMR_RUNNING_CHANSW 1
@@ -86,7 +92,7 @@ enum rx_mgmt_action {
/* utils */
static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd)
{
- WARN_ON(!mutex_is_locked(&ifmgd->mtx));
+ lockdep_assert_held(&ifmgd->mtx);
}
/*
@@ -109,7 +115,7 @@ static void run_again(struct ieee80211_if_managed *ifmgd,
mod_timer(&ifmgd->timer, timeout);
}
-static void mod_beacon_timer(struct ieee80211_sub_if_data *sdata)
+void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
{
if (sdata->local->hw.flags & IEEE80211_HW_BEACON_FILTER)
return;
@@ -118,6 +124,19 @@ static void mod_beacon_timer(struct ieee80211_sub_if_data *sdata)
round_jiffies_up(jiffies + IEEE80211_BEACON_LOSS_TIME));
}
+void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+
+ if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
+ return;
+
+ mod_timer(&sdata->u.mgd.conn_mon_timer,
+ round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
+
+ ifmgd->probe_send_count = 0;
+}
+
static int ecw2cw(int ecw)
{
return (1 << ecw) - 1;
@@ -778,16 +797,17 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
params.uapsd = uapsd;
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
- "cWmin=%d cWmax=%d txop=%d uapsd=%d\n",
- wiphy_name(local->hw.wiphy), queue, aci, acm,
- params.aifs, params.cw_min, params.cw_max, params.txop,
- params.uapsd);
+ wiphy_debug(local->hw.wiphy,
+ "WMM queue=%d aci=%d acm=%d aifs=%d "
+ "cWmin=%d cWmax=%d txop=%d uapsd=%d\n",
+ queue, aci, acm,
+ params.aifs, params.cw_min, params.cw_max,
+ params.txop, params.uapsd);
#endif
if (drv_conf_tx(local, queue, &params))
- printk(KERN_DEBUG "%s: failed to set TX queue "
- "parameters for queue %d\n",
- wiphy_name(local->hw.wiphy), queue);
+ wiphy_debug(local->hw.wiphy,
+ "failed to set TX queue parameters for queue %d\n",
+ queue);
}
/* enable WMM or activate new settings */
@@ -860,14 +880,6 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL |
IEEE80211_STA_BEACON_POLL);
- /*
- * Always handle WMM once after association regardless
- * of the first value the AP uses. Setting -1 here has
- * that effect because the AP values is an unsigned
- * 4-bit value.
- */
- sdata->u.mgd.wmm_last_param_set = -1;
-
ieee80211_led_assoc(local, 1);
if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD)
@@ -901,7 +913,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
mutex_lock(&local->iflist_mtx);
ieee80211_recalc_ps(local, -1);
- ieee80211_recalc_smps(local, sdata);
+ ieee80211_recalc_smps(local);
mutex_unlock(&local->iflist_mtx);
netif_tx_start_all_queues(sdata->dev);
@@ -909,7 +921,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
}
static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
- bool remove_sta)
+ bool remove_sta, bool tx)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
@@ -948,7 +960,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
sta = sta_info_get(sdata, bssid);
if (sta) {
set_sta_flags(sta, WLAN_STA_BLOCK_BA);
- ieee80211_sta_tear_down_BA_sessions(sta);
+ ieee80211_sta_tear_down_BA_sessions(sta, tx);
}
mutex_unlock(&local->sta_mtx);
@@ -990,6 +1002,11 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
if (remove_sta)
sta_info_destroy_addr(sdata, bssid);
+
+ del_timer_sync(&sdata->u.mgd.conn_mon_timer);
+ del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
+ del_timer_sync(&sdata->u.mgd.timer);
+ del_timer_sync(&sdata->u.mgd.chswitch_timer);
}
void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
@@ -1006,21 +1023,26 @@ void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
if (is_multicast_ether_addr(hdr->addr1))
return;
- if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
- return;
-
- mod_timer(&sdata->u.mgd.conn_mon_timer,
- round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
+ ieee80211_sta_reset_conn_monitor(sdata);
}
static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
const u8 *ssid;
+ u8 *dst = ifmgd->associated->bssid;
+ u8 unicast_limit = max(1, IEEE80211_MAX_PROBE_TRIES - 3);
+
+ /*
+ * Try sending broadcast probe requests for the last three
+ * probe requests after the first ones failed since some
+ * buggy APs only support broadcast probe requests.
+ */
+ if (ifmgd->probe_send_count >= unicast_limit)
+ dst = NULL;
ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
- ieee80211_send_probe_req(sdata, ifmgd->associated->bssid,
- ssid + 2, ssid[1], NULL, 0);
+ ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid[1], NULL, 0);
ifmgd->probe_send_count++;
ifmgd->probe_timeout = jiffies + IEEE80211_PROBE_WAIT;
@@ -1102,9 +1124,12 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
printk(KERN_DEBUG "Connection to AP %pM lost.\n", bssid);
- ieee80211_set_disassoc(sdata, true);
- ieee80211_recalc_idle(local);
+ ieee80211_set_disassoc(sdata, true, true);
mutex_unlock(&ifmgd->mtx);
+
+ mutex_lock(&local->mtx);
+ ieee80211_recalc_idle(local);
+ mutex_unlock(&local->mtx);
/*
* must be outside lock due to cfg80211,
* but that's not a problem.
@@ -1172,8 +1197,10 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
printk(KERN_DEBUG "%s: deauthenticated from %pM (Reason: %u)\n",
sdata->name, bssid, reason_code);
- ieee80211_set_disassoc(sdata, true);
+ ieee80211_set_disassoc(sdata, true, false);
+ mutex_lock(&sdata->local->mtx);
ieee80211_recalc_idle(sdata->local);
+ mutex_unlock(&sdata->local->mtx);
return RX_MGMT_CFG80211_DEAUTH;
}
@@ -1202,8 +1229,10 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
printk(KERN_DEBUG "%s: disassociated from %pM (Reason: %u)\n",
sdata->name, mgmt->sa, reason_code);
- ieee80211_set_disassoc(sdata, true);
+ ieee80211_set_disassoc(sdata, true, false);
+ mutex_lock(&sdata->local->mtx);
ieee80211_recalc_idle(sdata->local);
+ mutex_unlock(&sdata->local->mtx);
return RX_MGMT_CFG80211_DISASSOC;
}
@@ -1262,7 +1291,7 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
rates = 0;
basic_rates = 0;
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ sband = local->hw.wiphy->bands[wk->chan->band];
for (i = 0; i < elems.supp_rates_len; i++) {
int rate = (elems.supp_rates[i] & 0x7f) * 5;
@@ -1298,11 +1327,11 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
}
}
- sta->sta.supp_rates[local->hw.conf.channel->band] = rates;
+ sta->sta.supp_rates[wk->chan->band] = rates;
sdata->vif.bss_conf.basic_rates = basic_rates;
/* cf. IEEE 802.11 9.2.12 */
- if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+ if (wk->chan->band == IEEE80211_BAND_2GHZ &&
have_higher_than_11mbit)
sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
else
@@ -1330,6 +1359,14 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
return false;
}
+ /*
+ * Always handle WMM once after association regardless
+ * of the first value the AP uses. Setting -1 here has
+ * that effect because the AP values is an unsigned
+ * 4-bit value.
+ */
+ ifmgd->wmm_last_param_set = -1;
+
if (elems.wmm_param)
ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
elems.wmm_param_len);
@@ -1362,7 +1399,7 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
* Also start the timer that will detect beacon loss.
*/
ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
- mod_beacon_timer(sdata);
+ ieee80211_sta_reset_beacon_monitor(sdata);
return true;
}
@@ -1465,7 +1502,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
* we have or will be receiving any beacons or data, so let's
* schedule the timers again, just in case.
*/
- mod_beacon_timer(sdata);
+ ieee80211_sta_reset_beacon_monitor(sdata);
mod_timer(&ifmgd->conn_mon_timer,
round_jiffies_up(jiffies +
@@ -1540,15 +1577,18 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
ifmgd->last_beacon_signal = rx_status->signal;
if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
- ifmgd->ave_beacon_signal = rx_status->signal;
+ ifmgd->ave_beacon_signal = rx_status->signal * 16;
ifmgd->last_cqm_event_signal = 0;
+ ifmgd->count_beacon_signal = 1;
} else {
ifmgd->ave_beacon_signal =
(IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
(16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
ifmgd->ave_beacon_signal) / 16;
+ ifmgd->count_beacon_signal++;
}
if (bss_conf->cqm_rssi_thold &&
+ ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
int sig = ifmgd->ave_beacon_signal / 16;
int last_event = ifmgd->last_cqm_event_signal;
@@ -1588,7 +1628,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
* Push the beacon loss detection into the future since
* we are processing a beacon from the AP just now.
*/
- mod_beacon_timer(sdata);
+ ieee80211_sta_reset_beacon_monitor(sdata);
ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
@@ -1599,7 +1639,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
directed_tim = ieee80211_check_tim(elems.tim, elems.tim_len,
ifmgd->aid);
- if (ncrc != ifmgd->beacon_crc) {
+ if (ncrc != ifmgd->beacon_crc || !ifmgd->beacon_crc_valid) {
ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems,
true);
@@ -1630,9 +1670,10 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
}
}
- if (ncrc == ifmgd->beacon_crc)
+ if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
return;
ifmgd->beacon_crc = ncrc;
+ ifmgd->beacon_crc_valid = true;
if (elems.erp_info && elems.erp_info_len >= 1) {
erp_valid = true;
@@ -1751,7 +1792,7 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
struct ieee80211_local *local = sdata->local;
struct ieee80211_work *wk;
- mutex_lock(&local->work_mtx);
+ mutex_lock(&local->mtx);
list_for_each_entry(wk, &local->work_list, list) {
if (wk->sdata != sdata)
continue;
@@ -1783,7 +1824,7 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
free_work(wk);
break;
}
- mutex_unlock(&local->work_mtx);
+ mutex_unlock(&local->mtx);
cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
}
@@ -1823,10 +1864,12 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
else if (ifmgd->probe_send_count < IEEE80211_MAX_PROBE_TRIES) {
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "No probe response from AP %pM"
- " after %dms, try %d\n", bssid,
- (1000 * IEEE80211_PROBE_WAIT)/HZ,
- ifmgd->probe_send_count);
+ wiphy_debug(local->hw.wiphy,
+ "%s: No probe response from AP %pM"
+ " after %dms, try %d\n",
+ sdata->name,
+ bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ,
+ ifmgd->probe_send_count);
#endif
ieee80211_mgd_probe_ap_send(sdata);
} else {
@@ -1836,12 +1879,16 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
*/
ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
IEEE80211_STA_BEACON_POLL);
- printk(KERN_DEBUG "No probe response from AP %pM"
- " after %dms, disconnecting.\n",
- bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ);
- ieee80211_set_disassoc(sdata, true);
- ieee80211_recalc_idle(local);
+ wiphy_debug(local->hw.wiphy,
+ "%s: No probe response from AP %pM"
+ " after %dms, disconnecting.\n",
+ sdata->name,
+ bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ);
+ ieee80211_set_disassoc(sdata, true, true);
mutex_unlock(&ifmgd->mtx);
+ mutex_lock(&local->mtx);
+ ieee80211_recalc_idle(local);
+ mutex_unlock(&local->mtx);
/*
* must be outside lock due to cfg80211,
* but that's not a problem.
@@ -1917,6 +1964,8 @@ void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata)
* time -- the code here is properly synchronised.
*/
+ cancel_work_sync(&ifmgd->request_smps_work);
+
cancel_work_sync(&ifmgd->beacon_connection_loss_work);
if (del_timer_sync(&ifmgd->timer))
set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running);
@@ -1952,6 +2001,7 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
INIT_WORK(&ifmgd->beacon_connection_loss_work,
ieee80211_beacon_connection_loss_work);
+ INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_work);
setup_timer(&ifmgd->timer, ieee80211_sta_timer,
(unsigned long) sdata);
setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
@@ -2158,7 +2208,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
}
/* Trying to reassociate - clear previous association state */
- ieee80211_set_disassoc(sdata, true);
+ ieee80211_set_disassoc(sdata, true, false);
}
mutex_unlock(&ifmgd->mtx);
@@ -2169,6 +2219,8 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
ifmgd->flags &= ~IEEE80211_STA_DISABLE_11N;
ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
+ ifmgd->beacon_crc_valid = false;
+
for (i = 0; i < req->crypto.n_ciphers_pairwise; i++)
if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
@@ -2249,6 +2301,9 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
else
ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
+ sdata->control_port_protocol = req->crypto.control_port_ethertype;
+ sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
+
ieee80211_add_work(wk);
return 0;
}
@@ -2267,7 +2322,7 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
memcpy(bssid, req->bss->bssid, ETH_ALEN);
if (ifmgd->associated == req->bss) {
- ieee80211_set_disassoc(sdata, false);
+ ieee80211_set_disassoc(sdata, false, true);
mutex_unlock(&ifmgd->mtx);
assoc_bss = true;
} else {
@@ -2275,7 +2330,7 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
mutex_unlock(&ifmgd->mtx);
- mutex_lock(&local->work_mtx);
+ mutex_lock(&local->mtx);
list_for_each_entry(wk, &local->work_list, list) {
if (wk->sdata != sdata)
continue;
@@ -2294,7 +2349,7 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
free_work(wk);
break;
}
- mutex_unlock(&local->work_mtx);
+ mutex_unlock(&local->mtx);
/*
* If somebody requests authentication and we haven't
@@ -2319,7 +2374,9 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
if (assoc_bss)
sta_info_destroy_addr(sdata, bssid);
+ mutex_lock(&sdata->local->mtx);
ieee80211_recalc_idle(sdata->local);
+ mutex_unlock(&sdata->local->mtx);
return 0;
}
@@ -2348,7 +2405,7 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
sdata->name, req->bss->bssid, req->reason_code);
memcpy(bssid, req->bss->bssid, ETH_ALEN);
- ieee80211_set_disassoc(sdata, false);
+ ieee80211_set_disassoc(sdata, false, true);
mutex_unlock(&ifmgd->mtx);
@@ -2357,7 +2414,9 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
cookie, !req->local_state_change);
sta_info_destroy_addr(sdata, bssid);
+ mutex_lock(&sdata->local->mtx);
ieee80211_recalc_idle(sdata->local);
+ mutex_unlock(&sdata->local->mtx);
return 0;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-22 11:55:25 +0300