diff options
Diffstat (limited to 'net/mac80211/mlme.c')
-rw-r--r-- | net/mac80211/mlme.c | 138 |
1 files changed, 111 insertions, 27 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 45fbb9e33746..64d92d5a7f40 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -28,8 +28,15 @@ #include "rate.h" #include "led.h" -#define IEEE80211_MAX_NULLFUNC_TRIES 2 -#define IEEE80211_MAX_PROBE_TRIES 5 +static int max_nullfunc_tries = 2; +module_param(max_nullfunc_tries, int, 0644); +MODULE_PARM_DESC(max_nullfunc_tries, + "Maximum nullfunc tx tries before disconnecting (reason 4)."); + +static int max_probe_tries = 5; +module_param(max_probe_tries, int, 0644); +MODULE_PARM_DESC(max_probe_tries, + "Maximum probe tries before disconnecting (reason 4)."); /* * Beacon loss timeout is calculated as N frames times the @@ -51,7 +58,11 @@ * a probe request because of beacon loss or for * checking the connection still works. */ -#define IEEE80211_PROBE_WAIT (HZ / 2) +static int probe_wait_ms = 500; +module_param(probe_wait_ms, int, 0644); +MODULE_PARM_DESC(probe_wait_ms, + "Maximum time(ms) to wait for probe response" + " before disconnecting (reason 4)."); /* * Weight given to the latest Beacon frame when calculating average signal @@ -134,6 +145,9 @@ void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + if (unlikely(!sdata->u.mgd.associated)) + return; + if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) return; @@ -161,6 +175,7 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, struct ieee80211_supported_band *sband; struct sta_info *sta; u32 changed = 0; + int hti_cfreq; u16 ht_opmode; bool enable_ht = true; enum nl80211_channel_type prev_chantype; @@ -174,10 +189,27 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, if (!sband->ht_cap.ht_supported) enable_ht = false; - /* check that channel matches the right operating channel */ - if (local->hw.conf.channel->center_freq != - ieee80211_channel_to_frequency(hti->control_chan)) - enable_ht = false; + if (enable_ht) { + hti_cfreq = ieee80211_channel_to_frequency(hti->control_chan, + sband->band); + /* check that channel matches the right operating channel */ + if (local->hw.conf.channel->center_freq != hti_cfreq) { + /* Some APs mess this up, evidently. + * Netgear WNDR3700 sometimes reports 4 higher than + * the actual channel, for instance. + */ + printk(KERN_DEBUG + "%s: Wrong control channel in association" + " response: configured center-freq: %d" + " hti-cfreq: %d hti->control_chan: %d" + " band: %d. Disabling HT.\n", + sdata->name, + local->hw.conf.channel->center_freq, + hti_cfreq, hti->control_chan, + sband->band); + enable_ht = false; + } + } if (enable_ht) { channel_type = NL80211_CHAN_HT20; @@ -429,7 +461,8 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, container_of((void *)bss, struct cfg80211_bss, priv); struct ieee80211_channel *new_ch; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num); + int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num, + cbss->channel->band); ASSERT_MGD_MTX(ifmgd); @@ -580,6 +613,37 @@ static void ieee80211_change_ps(struct ieee80211_local *local) } } +static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_if_managed *mgd = &sdata->u.mgd; + struct sta_info *sta = NULL; + u32 sta_flags = 0; + + if (!mgd->powersave) + return false; + + if (!mgd->associated) + return false; + + if (!mgd->associated->beacon_ies) + return false; + + if (mgd->flags & (IEEE80211_STA_BEACON_POLL | + IEEE80211_STA_CONNECTION_POLL)) + return false; + + rcu_read_lock(); + sta = sta_info_get(sdata, mgd->bssid); + if (sta) + sta_flags = get_sta_flags(sta); + rcu_read_unlock(); + + if (!(sta_flags & WLAN_STA_AUTHORIZED)) + return false; + + return true; +} + /* need to hold RTNL or interface lock */ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) { @@ -600,17 +664,21 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) list_for_each_entry(sdata, &local->interfaces, list) { if (!ieee80211_sdata_running(sdata)) continue; + if (sdata->vif.type == NL80211_IFTYPE_AP) { + /* If an AP vif is found, then disable PS + * by setting the count to zero thereby setting + * ps_sdata to NULL. + */ + count = 0; + break; + } if (sdata->vif.type != NL80211_IFTYPE_STATION) continue; found = sdata; count++; } - if (count == 1 && found->u.mgd.powersave && - found->u.mgd.associated && - found->u.mgd.associated->beacon_ies && - !(found->u.mgd.flags & (IEEE80211_STA_BEACON_POLL | - IEEE80211_STA_CONNECTION_POLL))) { + if (count == 1 && ieee80211_powersave_allowed(found)) { struct ieee80211_conf *conf = &local->hw.conf; s32 beaconint_us; @@ -700,9 +768,19 @@ void ieee80211_dynamic_ps_enable_work(struct work_struct *work) return; if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && - (!(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED))) + (!(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED))) { + netif_tx_stop_all_queues(sdata->dev); + /* + * Flush all the frames queued in the driver before + * going to power save + */ + drv_flush(local, false); ieee80211_send_nullfunc(local, sdata, 1); + /* Flush once again to get the tx status of nullfunc frame */ + drv_flush(local, false); + } + if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) || (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { @@ -710,6 +788,8 @@ void ieee80211_dynamic_ps_enable_work(struct work_struct *work) local->hw.conf.flags |= IEEE80211_CONF_PS; ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); } + + netif_tx_start_all_queues(sdata->dev); } void ieee80211_dynamic_ps_timer(unsigned long data) @@ -1089,7 +1169,7 @@ 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); + u8 unicast_limit = max(1, max_probe_tries - 3); /* * Try sending broadcast probe requests for the last three @@ -1115,7 +1195,7 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) } ifmgd->probe_send_count++; - ifmgd->probe_timeout = jiffies + IEEE80211_PROBE_WAIT; + ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); run_again(ifmgd, ifmgd->probe_timeout); } @@ -1216,7 +1296,8 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata) memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); - printk(KERN_DEBUG "Connection to AP %pM lost.\n", bssid); + printk(KERN_DEBUG "%s: Connection to AP %pM lost.\n", + sdata->name, bssid); ieee80211_set_disassoc(sdata, true, true); mutex_unlock(&ifmgd->mtx); @@ -1519,7 +1600,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, } if (elems->ds_params && elems->ds_params_len == 1) - freq = ieee80211_channel_to_frequency(elems->ds_params[0]); + freq = ieee80211_channel_to_frequency(elems->ds_params[0], + rx_status->band); else freq = rx_status->freq; @@ -1960,9 +2042,9 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) - max_tries = IEEE80211_MAX_NULLFUNC_TRIES; + max_tries = max_nullfunc_tries; else - max_tries = IEEE80211_MAX_PROBE_TRIES; + max_tries = max_probe_tries; /* ACK received for nullfunc probing frame */ if (!ifmgd->probe_send_count) @@ -1972,9 +2054,9 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) #ifdef CONFIG_MAC80211_VERBOSE_DEBUG wiphy_debug(local->hw.wiphy, "%s: No ack for nullfunc frame to" - " AP %pM, try %d\n", + " AP %pM, try %d/%i\n", sdata->name, bssid, - ifmgd->probe_send_count); + ifmgd->probe_send_count, max_tries); #endif ieee80211_mgd_probe_ap_send(sdata); } else { @@ -1994,17 +2076,17 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) "%s: Failed to send nullfunc to AP %pM" " after %dms, disconnecting.\n", sdata->name, - bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ); + bssid, probe_wait_ms); #endif ieee80211_sta_connection_lost(sdata, bssid); } else if (ifmgd->probe_send_count < max_tries) { #ifdef CONFIG_MAC80211_VERBOSE_DEBUG wiphy_debug(local->hw.wiphy, "%s: No probe response from AP %pM" - " after %dms, try %d\n", + " after %dms, try %d/%i\n", sdata->name, - bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ, - ifmgd->probe_send_count); + bssid, probe_wait_ms, + ifmgd->probe_send_count, max_tries); #endif ieee80211_mgd_probe_ap_send(sdata); } else { @@ -2016,7 +2098,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) "%s: No probe response from AP %pM" " after %dms, disconnecting.\n", sdata->name, - bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ); + bssid, probe_wait_ms); ieee80211_sta_connection_lost(sdata, bssid); } @@ -2254,6 +2336,7 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, else wk->type = IEEE80211_WORK_DIRECT_PROBE; wk->chan = req->bss->channel; + wk->chan_type = NL80211_CHAN_NO_HT; wk->sdata = sdata; wk->done = ieee80211_probe_auth_done; @@ -2403,6 +2486,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, memcpy(wk->assoc.prev_bssid, req->prev_bssid, ETH_ALEN); wk->chan = req->bss->channel; + wk->chan_type = NL80211_CHAN_NO_HT; wk->sdata = sdata; wk->done = ieee80211_assoc_done; if (!bss->dtim_period && |