diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2013-02-05 10:55:21 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-03-07 14:32:18 +0100 |
| commit | 560d268220d3416a2d473bcc906ea2ccbf51e4ec (patch) | |
| tree | 4cc83a5346d70fc14ec1874d9ad5c9714b64a0a0 /net/mac80211/tx.c | |
| parent | 87f59c70ce6d1abeaaf97594835be29f746b81a0 (diff) | |
mac80211: provide race-free 64-bit traffic counters
Make the TX bytes/packets counters race-free by keeping
them per AC so concurrent TX on queues can't cause lost
or wrong updates. This works since each station belongs
to a single interface. While at it also make the bytes
counters 64-bit.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/tx.c')
| -rw-r--r-- | net/mac80211/tx.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 8914d2d2881a..3fcdf2118101 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -991,15 +991,18 @@ static ieee80211_tx_result debug_noinline ieee80211_tx_h_stats(struct ieee80211_tx_data *tx) { struct sk_buff *skb; + int ac = -1; if (!tx->sta) return TX_CONTINUE; - tx->sta->tx_packets++; skb_queue_walk(&tx->skbs, skb) { + ac = skb_get_queue_mapping(skb); tx->sta->tx_fragments++; - tx->sta->tx_bytes += skb->len; + tx->sta->tx_bytes[ac] += skb->len; } + if (ac >= 0) + tx->sta->tx_packets[ac]++; return TX_CONTINUE; } |