diff options
author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-04-20 22:53:37 +0300 |
---|---|---|
committer | Johannes Berg <johannes.berg@intel.com> | 2015-04-24 13:25:00 +0300 |
commit | 6382246e895fa0ae5162de7c1e5566b9719bdd26 (patch) | |
tree | 6bf4000f54b57078fe9f019f2959f4a1ae66c948 /include/net | |
parent | 6e70d560ff44beddabb43d7ff39cc008e5b35536 (diff) | |
download | linux-6382246e895fa0ae5162de7c1e5566b9719bdd26.tar.xz |
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 'include/net')
-rw-r--r-- | include/net/mac80211.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 4feb74da5eaf..0c3983b74b3e 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -337,10 +337,12 @@ enum ieee80211_bss_change { * enum ieee80211_event_type - event to be notified to the low level driver * @RSSI_EVENT: AP's rssi crossed the a threshold set by the driver. * @MLME_EVENT: event related to MLME + * @BAR_RX_EVENT: a BAR was received */ enum ieee80211_event_type { RSSI_EVENT, MLME_EVENT, + BAR_RX_EVENT, }; /** @@ -400,17 +402,31 @@ struct ieee80211_mlme_event { }; /** + * struct ieee80211_ba_event - data attached for BlockAck related events + * @sta: pointer to the &ieee80211_sta to which this event relates + * @tid: the tid + * @ssn: the starting sequence number + */ +struct ieee80211_ba_event { + struct ieee80211_sta *sta; + u16 tid; + u16 ssn; +}; + +/** * struct ieee80211_event - event to be sent to the driver * @type: The event itself. See &enum ieee80211_event_type. * @rssi: relevant if &type is %RSSI_EVENT * @mlme: relevant if &type is %AUTH_EVENT - * @u: union holding the above two fields + * @ba: relevant if &type is %BAR_RX_EVENT + * @u:union holding the fields above */ struct ieee80211_event { enum ieee80211_event_type type; union { struct ieee80211_rssi_event rssi; struct ieee80211_mlme_event mlme; + struct ieee80211_ba_event ba; } u; }; @@ -3001,7 +3017,7 @@ enum ieee80211_reconfig_type { * The callback can sleep. * @event_callback: Notify driver about any event in mac80211. See * &enum ieee80211_event_type for the different types. - * The callback can sleep. + * The callback must be atomic. * * @release_buffered_frames: Release buffered frames according to the given * parameters. In the case where the driver buffers some frames for |