diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2015-03-27 23:30:37 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2015-04-01 21:44:34 +0300 |
| commit | ba8c3d6f16a1f9305c23ac1d2fd3992508c5ac03 (patch) | |
| tree | c03bbdf0affccbd1f3a4fd0c239e59bb44f28e99 /net/mac80211/rx.c | |
| parent | cef2fc1ce4326f7f24c3cf938b94a661fbe773e3 (diff) | |
| download | linux-ba8c3d6f16a1f9305c23ac1d2fd3992508c5ac03.tar.xz | |
mac80211: add an intermediate software queue implementation
This allows drivers to request per-vif and per-sta-tid queues from which
they can pull frames. This makes it easier to keep the hardware queues
short, and to improve fairness between clients and vifs.
The task of scheduling packet transmission is left up to the driver -
queueing is controlled by mac80211. Drivers can only dequeue packets by
calling ieee80211_tx_dequeue. This makes it possible to add active queue
management later without changing drivers using this code.
This can also be used as a starting point to implement A-MSDU
aggregation in a way that does not add artificially induced latency.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[resolved minor context conflict, minor changes, endian annotations]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/rx.c')
| -rw-r--r-- | net/mac80211/rx.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 5b60bcf00ec3..bc59c8a20a39 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1184,6 +1184,7 @@ static void sta_ps_start(struct sta_info *sta) struct ieee80211_sub_if_data *sdata = sta->sdata; struct ieee80211_local *local = sdata->local; struct ps_data *ps; + int tid; if (sta->sdata->vif.type == NL80211_IFTYPE_AP || sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) @@ -1197,6 +1198,18 @@ static void sta_ps_start(struct sta_info *sta) drv_sta_notify(local, sdata, STA_NOTIFY_SLEEP, &sta->sta); ps_dbg(sdata, "STA %pM aid %d enters power save mode\n", sta->sta.addr, sta->sta.aid); + + if (!sta->sta.txq[0]) + return; + + for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { + struct txq_info *txqi = to_txq_info(sta->sta.txq[tid]); + + if (!skb_queue_len(&txqi->queue)) + set_bit(tid, &sta->txq_buffered_tids); + else + clear_bit(tid, &sta->txq_buffered_tids); + } } static void sta_ps_end(struct sta_info *sta) |