diff options
| author | Bob Copeland <me@bobcopeland.com> | 2015-04-13 17:26:28 -0400 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2015-04-20 13:05:29 +0200 |
| commit | 48bf6beddf455b0cb605915081f3428960a6224e (patch) | |
| tree | 98e652b5c3970a61d6dee510fca33c874370cdcf /net/mac80211/sta_info.h | |
| parent | 388f997620cb57372c494a194e9698b28cc179b8 (diff) | |
| download | linux-rt-48bf6beddf455b0cb605915081f3428960a6224e.tar.gz | |
mac80211: introduce plink lock for plink fields
The mesh plink code uses sta->lock to serialize access to the
plink state fields between the peer link state machine and the
peer link timer. Some paths (e.g. those involving
mps_qos_null_tx()) unfortunately hold this spinlock across
frame tx, which is soon to be disallowed. Add a new spinlock
just for plink access.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/sta_info.h')
| -rw-r--r-- | net/mac80211/sta_info.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index 5c164fb3f6c5..40ad52e447ec 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -299,6 +299,7 @@ struct sta_ampdu_mlme { * @tid_seq: per-TID sequence numbers for sending to this STA * @ampdu_mlme: A-MPDU state machine state * @timer_to_tid: identity mapping to ID timers + * @plink_lock: serialize access to plink fields * @llid: Local link ID * @plid: Peer link ID * @reason: Cancel reason on PLINK_HOLDING state @@ -422,9 +423,10 @@ struct sta_info { #ifdef CONFIG_MAC80211_MESH /* - * Mesh peer link attributes + * Mesh peer link attributes, protected by plink_lock. * TODO: move to a sub-structure that is referenced with pointer? */ + spinlock_t plink_lock; u16 llid; u16 plid; u16 reason; @@ -432,6 +434,7 @@ struct sta_info { enum nl80211_plink_state plink_state; u32 plink_timeout; struct timer_list plink_timer; + s64 t_offset; s64 t_offset_setpoint; /* mesh power save */ |