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mac80211: provide race-free 64-bit traffic counters

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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>
This commit is contained in:
Johannes Berg
2013-02-05 10:55:21 +01:00
parent 87f59c70ce
commit 560d268220
3 changed files with 25 additions and 14 deletions
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9
net/mac80211/sta_info.h
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@@ -333,7 +333,8 @@ struct sta_info {
unsigned long driver_buffered_tids;
/* Updated from RX path only, no locking requirements */
unsigned long rx_packets, rx_bytes;
unsigned long rx_packets;
u64 rx_bytes;
unsigned long wep_weak_iv_count;
unsigned long last_rx;
long last_connected;
@@ -353,9 +354,9 @@ struct sta_info {
unsigned int fail_avg;
/* Updated from TX path only, no locking requirements */
unsigned long tx_packets;
unsigned long tx_bytes;
unsigned long tx_fragments;
u32 tx_fragments;
u64 tx_packets[IEEE80211_NUM_ACS];
u64 tx_bytes[IEEE80211_NUM_ACS];
struct ieee80211_tx_rate last_tx_rate;
int last_rx_rate_idx;
u32 last_rx_rate_flag;