diff options
| author | Arik Nemtsov <arik@wizery.com> | 2011-01-31 22:29:13 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-02-03 16:44:44 -0500 |
| commit | d057e5a381cbaec5632117bf62ba49438ab16214 (patch) | |
| tree | 723bd8c982747393b3f390b2c0ea75eb0c6bb62e /net/mac80211/rx.c | |
| parent | 8fd369eeaa81d05969787c9ddf9cf3f1a8c4e084 (diff) | |
| download | kernel_samsung_smdk4412-d057e5a381cbaec5632117bf62ba49438ab16214.zip kernel_samsung_smdk4412-d057e5a381cbaec5632117bf62ba49438ab16214.tar.gz kernel_samsung_smdk4412-d057e5a381cbaec5632117bf62ba49438ab16214.tar.bz2 | |
mac80211: add HW flag for disabling auto link-PS in AP mode
When operating in AP mode the wl1271 hardware filters out null-data
packets as well as management packets. This makes it impossible for
mac80211 to monitor the PS mode by using the PM bit of incoming frames.
Implement a HW flag to indicate that mac80211 should ignore the PM bit.
In addition, expose ieee80211_sta_ps_transition() to make low-level
drivers capable of controlling PS-mode.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/rx.c')
| -rw-r--r-- | net/mac80211/rx.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 7185c93..d78d6fc 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1105,7 +1105,8 @@ static void ap_sta_ps_start(struct sta_info *sta) atomic_inc(&sdata->bss->num_sta_ps); set_sta_flags(sta, WLAN_STA_PS_STA); - drv_sta_notify(local, sdata, STA_NOTIFY_SLEEP, &sta->sta); + if (!(local->hw.flags & IEEE80211_HW_AP_LINK_PS)) + drv_sta_notify(local, sdata, STA_NOTIFY_SLEEP, &sta->sta); #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG printk(KERN_DEBUG "%s: STA %pM aid %d enters power save mode\n", sdata->name, sta->sta.addr, sta->sta.aid); @@ -1134,6 +1135,27 @@ static void ap_sta_ps_end(struct sta_info *sta) ieee80211_sta_ps_deliver_wakeup(sta); } +int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start) +{ + struct sta_info *sta_inf = container_of(sta, struct sta_info, sta); + bool in_ps; + + WARN_ON(!(sta_inf->local->hw.flags & IEEE80211_HW_AP_LINK_PS)); + + /* Don't let the same PS state be set twice */ + in_ps = test_sta_flags(sta_inf, WLAN_STA_PS_STA); + if ((start && in_ps) || (!start && !in_ps)) + return -EINVAL; + + if (start) + ap_sta_ps_start(sta_inf); + else + ap_sta_ps_end(sta_inf); + + return 0; +} +EXPORT_SYMBOL(ieee80211_sta_ps_transition); + static ieee80211_rx_result debug_noinline ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) { @@ -1178,7 +1200,8 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) * Change STA power saving mode only at the end of a frame * exchange sequence. */ - if (!ieee80211_has_morefrags(hdr->frame_control) && + if (!(sta->local->hw.flags & IEEE80211_HW_AP_LINK_PS) && + !ieee80211_has_morefrags(hdr->frame_control) && !(status->rx_flags & IEEE80211_RX_DEFERRED_RELEASE) && (rx->sdata->vif.type == NL80211_IFTYPE_AP || rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) { |