diff options
author | Johannes Berg <johannes.berg@intel.com> | 2011-09-29 14:04:39 (GMT) |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2011-09-30 19:57:23 (GMT) |
commit | 37fbd9080088f5f98ab81a6f2ad456857971a089 (patch) | |
tree | ea0d90d7d05056abd662e69b096d1d0628126115 /net | |
parent | 40b96408831f038b1a6b45e8b22cd050f82a3896 (diff) | |
download | linux-fsl-qoriq-37fbd9080088f5f98ab81a6f2ad456857971a089.tar.xz |
mac80211: allow out-of-band EOSP notification
iwlwifi has a separate EOSP notification from
the device, and to make use of that properly
it needs to be passed to mac80211. To be able
to mix with tx_status_irqsafe and rx_irqsafe
it also needs to be an "_irqsafe" version in
the sense that it goes through the tasklet,
the actual flag clearing would be IRQ-safe
but doing it directly would cause reordering
issues.
This is needed in the case of a P2P GO going
into an absence period without transmitting
any frames that should be driver-released as
in this case there's no other way to inform
mac80211 that the service period ended. Note
that for drivers that don't use the _irqsafe
functions another version of this function
will be required.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
-rw-r--r-- | net/mac80211/driver-trace.h | 22 | ||||
-rw-r--r-- | net/mac80211/ieee80211_i.h | 5 | ||||
-rw-r--r-- | net/mac80211/main.c | 14 | ||||
-rw-r--r-- | net/mac80211/sta_info.c | 25 |
4 files changed, 66 insertions, 0 deletions
diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h index aef08969..2af4fca 100644 --- a/net/mac80211/driver-trace.h +++ b/net/mac80211/driver-trace.h @@ -1498,6 +1498,28 @@ TRACE_EVENT(api_enable_rssi_reports, ) ); +TRACE_EVENT(api_eosp, + TP_PROTO(struct ieee80211_local *local, + struct ieee80211_sta *sta), + + TP_ARGS(local, sta), + + TP_STRUCT__entry( + LOCAL_ENTRY + STA_ENTRY + ), + + TP_fast_assign( + LOCAL_ASSIGN; + STA_ASSIGN; + ), + + TP_printk( + LOCAL_PR_FMT STA_PR_FMT, + LOCAL_PR_ARG, STA_PR_FMT + ) +); + /* * Tracing for internal functions * (which may also be called in response to driver calls) diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index da32064..9fa5f8a 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -664,6 +664,11 @@ enum sdata_queue_type { enum { IEEE80211_RX_MSG = 1, IEEE80211_TX_STATUS_MSG = 2, + IEEE80211_EOSP_MSG = 3, +}; + +struct skb_eosp_msg_data { + u8 sta[ETH_ALEN], iface[ETH_ALEN]; }; enum queue_stop_reason { diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 336ceb9..17b038a 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -325,6 +325,8 @@ u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) static void ieee80211_tasklet_handler(unsigned long data) { struct ieee80211_local *local = (struct ieee80211_local *) data; + struct sta_info *sta, *tmp; + struct skb_eosp_msg_data *eosp_data; struct sk_buff *skb; while ((skb = skb_dequeue(&local->skb_queue)) || @@ -340,6 +342,18 @@ static void ieee80211_tasklet_handler(unsigned long data) skb->pkt_type = 0; ieee80211_tx_status(local_to_hw(local), skb); break; + case IEEE80211_EOSP_MSG: + eosp_data = (void *)skb->cb; + for_each_sta_info(local, eosp_data->sta, sta, tmp) { + /* skip wrong virtual interface */ + if (memcmp(eosp_data->iface, + sta->sdata->vif.addr, ETH_ALEN)) + continue; + clear_sta_flag(sta, WLAN_STA_SP); + break; + } + dev_kfree_skb(skb); + break; default: WARN(1, "mac80211: Packet is of unknown type %d\n", skb->pkt_type); diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 907b420..076593b 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -1478,6 +1478,31 @@ void ieee80211_sta_block_awake(struct ieee80211_hw *hw, } EXPORT_SYMBOL(ieee80211_sta_block_awake); +void ieee80211_sta_eosp_irqsafe(struct ieee80211_sta *pubsta) +{ + struct sta_info *sta = container_of(pubsta, struct sta_info, sta); + struct ieee80211_local *local = sta->local; + struct sk_buff *skb; + struct skb_eosp_msg_data *data; + + trace_api_eosp(local, pubsta); + + skb = alloc_skb(0, GFP_ATOMIC); + if (!skb) { + /* too bad ... but race is better than loss */ + clear_sta_flag(sta, WLAN_STA_SP); + return; + } + + data = (void *)skb->cb; + memcpy(data->sta, pubsta->addr, ETH_ALEN); + memcpy(data->iface, sta->sdata->vif.addr, ETH_ALEN); + skb->pkt_type = IEEE80211_EOSP_MSG; + skb_queue_tail(&local->skb_queue, skb); + tasklet_schedule(&local->tasklet); +} +EXPORT_SYMBOL(ieee80211_sta_eosp_irqsafe); + void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, u8 tid, bool buffered) { |