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| author | Michal Kazior <michal.kazior@tieto.com> | 2016-01-27 15:26:12 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2016-02-24 09:04:30 +0100 |
| commit | f2ac7e301ae6397669ff3f79e691942a9b5d2f39 (patch) | |
| tree | c4bc882bf5deb92283c0de07cca357bde008b402 /net/mac80211/util.c | |
| parent | dfdfc2beb0dd7e3a067d2eeacb4623cb48e77658 (diff) | |
| download | lwn-f2ac7e301ae6397669ff3f79e691942a9b5d2f39.tar.gz lwn-f2ac7e301ae6397669ff3f79e691942a9b5d2f39.zip | |
mac80211: expose txq queue depth and size to drivers
This will allow drivers to make more educated
decisions whether to defer transmission or not.
Relying on wake_tx_queue() call count implicitly
was not possible because it could be called
without queued frame count actually changing on
software tx aggregation start/stop code paths.
It was also not possible to know how long
byte-wise queue was without dequeueing.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/util.c')
| -rw-r--r-- | net/mac80211/util.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index fb90d9c5df59..091f3dd62ad1 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -3368,3 +3368,17 @@ void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata, txqi->txq.ac = IEEE80211_AC_BE; } } + +void ieee80211_txq_get_depth(struct ieee80211_txq *txq, + unsigned long *frame_cnt, + unsigned long *byte_cnt) +{ + struct txq_info *txqi = to_txq_info(txq); + + if (frame_cnt) + *frame_cnt = txqi->queue.qlen; + + if (byte_cnt) + *byte_cnt = txqi->byte_cnt; +} +EXPORT_SYMBOL(ieee80211_txq_get_depth); |