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| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-04-20 22:53:37 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2015-04-24 12:25:00 +0200 |
| commit | 6382246e895fa0ae5162de7c1e5566b9719bdd26 (patch) | |
| tree | 6bf4000f54b57078fe9f019f2959f4a1ae66c948 /net/mac80211 | |
| parent | 6e70d560ff44beddabb43d7ff39cc008e5b35536 (diff) | |
| download | linux-stable-6382246e895fa0ae5162de7c1e5566b9719bdd26.tar.gz linux-stable-6382246e895fa0ae5162de7c1e5566b9719bdd26.tar.bz2 linux-stable-6382246e895fa0ae5162de7c1e5566b9719bdd26.zip | |
mac80211: notify the driver upon BAR Rx
When we receive a BAR, this typically means that our peer
doesn't hear our Block-Acks or that we can't hear its
frames. Either way, it is a good indication that the link
is in a bad condition. This is why it can serve as a probe
to the driver.
Use the event_callback callback for this.
Since more events with the same data will be added in the
feature, the structure that describes the data attached to
the event is called in a generic name: ieee80211_ba_event.
This also means that from now on, the event_callback can't
sleep.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/rx.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index b69a071d7679..ac6bfa999416 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -2427,6 +2427,9 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx, struct sk_buff_head *frames) struct { __le16 control, start_seq_num; } __packed bar_data; + struct ieee80211_event event = { + .type = BAR_RX_EVENT, + }; if (!rx->sta) return RX_DROP_MONITOR; @@ -2442,6 +2445,9 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx, struct sk_buff_head *frames) return RX_DROP_MONITOR; start_seq_num = le16_to_cpu(bar_data.start_seq_num) >> 4; + event.u.ba.tid = tid; + event.u.ba.ssn = start_seq_num; + event.u.ba.sta = &rx->sta->sta; /* reset session timer */ if (tid_agg_rx->timeout) @@ -2454,6 +2460,8 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx, struct sk_buff_head *frames) start_seq_num, frames); spin_unlock(&tid_agg_rx->reorder_lock); + drv_event_callback(rx->local, rx->sdata, &event); + kfree_skb(skb); return RX_QUEUED; } |