diff options
Diffstat (limited to 'net/mac80211/work.c')
| -rw-r--r-- | net/mac80211/work.c | 122 |
1 files changed, 103 insertions, 19 deletions
diff --git a/net/mac80211/work.c b/net/mac80211/work.c index 36305e0d06e..e73c8cae036 100644 --- a/net/mac80211/work.c +++ b/net/mac80211/work.c @@ -30,7 +30,6 @@ #define IEEE80211_AUTH_MAX_TRIES 3 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) #define IEEE80211_ASSOC_MAX_TRIES 3 -#define IEEE80211_MAX_PROBE_TRIES 5 enum work_action { WORK_ACT_MISMATCH, @@ -126,12 +125,6 @@ static void ieee80211_add_ht_ie(struct sk_buff *skb, const u8 *ht_info_ie, /* determine capability flags */ - if (ieee80211_disable_40mhz_24ghz && - sband->band == IEEE80211_BAND_2GHZ) { - cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; - cap &= ~IEEE80211_HT_CAP_SGI_40; - } - switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: if (flags & IEEE80211_CHAN_NO_HT40PLUS) { @@ -874,6 +867,44 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local, kfree_skb(skb); } +static bool ieee80211_work_ct_coexists(enum nl80211_channel_type wk_ct, + enum nl80211_channel_type oper_ct) +{ + switch (wk_ct) { + case NL80211_CHAN_NO_HT: + return true; + case NL80211_CHAN_HT20: + if (oper_ct != NL80211_CHAN_NO_HT) + return true; + return false; + case NL80211_CHAN_HT40MINUS: + case NL80211_CHAN_HT40PLUS: + return (wk_ct == oper_ct); + } + WARN_ON(1); /* shouldn't get here */ + return false; +} + +static enum nl80211_channel_type +ieee80211_calc_ct(enum nl80211_channel_type wk_ct, + enum nl80211_channel_type oper_ct) +{ + switch (wk_ct) { + case NL80211_CHAN_NO_HT: + return oper_ct; + case NL80211_CHAN_HT20: + if (oper_ct != NL80211_CHAN_NO_HT) + return oper_ct; + return wk_ct; + case NL80211_CHAN_HT40MINUS: + case NL80211_CHAN_HT40PLUS: + return wk_ct; + } + WARN_ON(1); /* shouldn't get here */ + return wk_ct; +} + + static void ieee80211_work_timer(unsigned long data) { struct ieee80211_local *local = (void *) data; @@ -924,18 +955,52 @@ static void ieee80211_work_work(struct work_struct *work) } if (!started && !local->tmp_channel) { + bool on_oper_chan; + bool tmp_chan_changed = false; + bool on_oper_chan2; + enum nl80211_channel_type wk_ct; + on_oper_chan = ieee80211_cfg_on_oper_channel(local); + + /* Work with existing channel type if possible. */ + wk_ct = wk->chan_type; + if (wk->chan == local->hw.conf.channel) + wk_ct = ieee80211_calc_ct(wk->chan_type, + local->hw.conf.channel_type); + + if (local->tmp_channel) + if ((local->tmp_channel != wk->chan) || + (local->tmp_channel_type != wk_ct)) + tmp_chan_changed = true; + + local->tmp_channel = wk->chan; + local->tmp_channel_type = wk_ct; /* - * TODO: could optimize this by leaving the - * station vifs in awake mode if they - * happen to be on the same channel as - * the requested channel + * Leave the station vifs in awake mode if they + * happen to be on the same channel as + * the requested channel. */ - ieee80211_offchannel_stop_beaconing(local); - ieee80211_offchannel_stop_station(local); + on_oper_chan2 = ieee80211_cfg_on_oper_channel(local); + if (on_oper_chan != on_oper_chan2) { + if (on_oper_chan2) { + /* going off oper channel, PS too */ + ieee80211_offchannel_stop_vifs(local, + true); + ieee80211_hw_config(local, 0); + } else { + /* going on channel, but leave PS + * off-channel. */ + ieee80211_hw_config(local, 0); + ieee80211_offchannel_return(local, + true, + false); + } + } else if (tmp_chan_changed) + /* Still off-channel, but on some other + * channel, so update hardware. + * PS should already be off-channel. + */ + ieee80211_hw_config(local, 0); - local->tmp_channel = wk->chan; - local->tmp_channel_type = wk->chan_type; - ieee80211_hw_config(local, 0); started = true; wk->timeout = jiffies; } @@ -1005,15 +1070,34 @@ static void ieee80211_work_work(struct work_struct *work) continue; if (wk->chan != local->tmp_channel) continue; - if (wk->chan_type != local->tmp_channel_type) + if (ieee80211_work_ct_coexists(wk->chan_type, + local->tmp_channel_type)) continue; remain_off_channel = true; } if (!remain_off_channel && local->tmp_channel) { + bool on_oper_chan = ieee80211_cfg_on_oper_channel(local); local->tmp_channel = NULL; - ieee80211_hw_config(local, 0); - ieee80211_offchannel_return(local, true); + /* If tmp_channel wasn't operating channel, then + * we need to go back on-channel. + * NOTE: If we can ever be here while scannning, + * or if the hw_config() channel config logic changes, + * then we may need to do a more thorough check to see if + * we still need to do a hardware config. Currently, + * we cannot be here while scanning, however. + */ + if (ieee80211_cfg_on_oper_channel(local) && !on_oper_chan) + ieee80211_hw_config(local, 0); + + /* At the least, we need to disable offchannel_ps, + * so just go ahead and run the entire offchannel + * return logic here. We *could* skip enabling + * beaconing if we were already on-oper-channel + * as a future optimization. + */ + ieee80211_offchannel_return(local, true, true); + /* give connection some time to breathe */ run_again(local, jiffies + HZ/2); } |