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cfg80211: expand per-station byte counters to 64bit 

In per-station statistics, present 32bit counters are too small
for practical purposes - with gigabit speeds, it get overlapped
every few seconds.

Expand counters in the struct station_info to be 64-bit.
Driver can still fill only 32-bit and indicate in @filled
only bits like STATION_INFO_[TR]X_BYTES; in case driver provides
full 64-bit counter, it should also set in @filled
bit STATION_INFO_[TR]RX_BYTES64

Netlink sends both 32-bit and 64-bit counters, if present, to not
break userspace.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
[change to also have 32-bit counters if driver advertises 64-bit]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Vladimir Kondratiev 2013-02-04 13:53:11 +02:00 committed by Johannes Berg
parent 682bd38b8a
commit 42745e0393
3 changed files with 25 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
include/net/cfg80211.h
View File

@ -672,8 +672,10 @@ struct station_parameters {
* @STATION_INFO_SIGNAL: @signal filled
* @STATION_INFO_TX_BITRATE: @txrate fields are filled
* (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)
* @STATION_INFO_RX_PACKETS: @rx_packets filled
* @STATION_INFO_TX_PACKETS: @tx_packets filled
* @STATION_INFO_RX_PACKETS: @rx_packets filled with 32-bit value
* @STATION_INFO_TX_PACKETS: @tx_packets filled with 32-bit value
* @STATION_INFO_RX_PACKETS64: @rx_packets filled with 64-bit value
* @STATION_INFO_TX_PACKETS64: @tx_packets filled with 64-bit value
* @STATION_INFO_TX_RETRIES: @tx_retries filled
* @STATION_INFO_TX_FAILED: @tx_failed filled
* @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled
@ -714,6 +716,8 @@ enum station_info_flags {
STATION_INFO_LOCAL_PM = 1<<21,
STATION_INFO_PEER_PM = 1<<22,
STATION_INFO_NONPEER_PM = 1<<23,
STATION_INFO_RX_BYTES64 = 1<<24,
STATION_INFO_TX_BYTES64 = 1<<25,
};
/**
@ -835,8 +839,8 @@ struct station_info {
u32 filled;
u32 connected_time;
u32 inactive_time;
u32 rx_bytes;
u32 tx_bytes;
u64 rx_bytes;
u64 tx_bytes;
u16 llid;
u16 plid;
u8 plink_state;

4
include/uapi/linux/nl80211.h
View File

@ -1857,6 +1857,8 @@ enum nl80211_sta_bss_param {
* @NL80211_STA_INFO_INACTIVE_TIME: time since last activity (u32, msecs)
* @NL80211_STA_INFO_RX_BYTES: total received bytes (u32, from this station)
* @NL80211_STA_INFO_TX_BYTES: total transmitted bytes (u32, to this station)
* @NL80211_STA_INFO_RX_BYTES64: total received bytes (u64, from this station)
* @NL80211_STA_INFO_TX_BYTES64: total transmitted bytes (u64, to this station)
* @NL80211_STA_INFO_SIGNAL: signal strength of last received PPDU (u8, dBm)
* @NL80211_STA_INFO_TX_BITRATE: current unicast tx rate, nested attribute
* containing info as possible, see &enum nl80211_rate_info
@ -1909,6 +1911,8 @@ enum nl80211_sta_info {
NL80211_STA_INFO_LOCAL_PM,
NL80211_STA_INFO_PEER_PM,
NL80211_STA_INFO_NONPEER_PM,
NL80211_STA_INFO_RX_BYTES64,
NL80211_STA_INFO_TX_BYTES64,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,

16
net/wireless/nl80211.c
View File

@ -3057,12 +3057,22 @@ static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
sinfo->inactive_time))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_RX_BYTES) &&
if ((sinfo->filled & (STATION_INFO_RX_BYTES |
STATION_INFO_RX_BYTES64)) &&
nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
(u32)sinfo->rx_bytes))
goto nla_put_failure;
if ((sinfo->filled & (STATION_INFO_TX_BYTES |
NL80211_STA_INFO_TX_BYTES64)) &&
nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
(u32)sinfo->tx_bytes))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
sinfo->rx_bytes))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_TX_BYTES) &&
nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
sinfo->tx_bytes))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_LLID) &&