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nl80211: Provide access to STA TX/RX packet counters 

The TX/RX packet counters are needed to fill in RADIUS Accounting
attributes Acct-Output-Packets and Acct-Input-Packets. We already
collect the needed information, but only the TX/RX bytes were
previously exposed through nl80211. Allow applications to fetch the
packet counters, too, to provide more complete support for accounting.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jouni Malinen 2009-02-17 13:24:57 +02:00 committed by John W. Linville
parent fdbf7335ea
commit 98c8a60a04
4 changed files with 23 additions and 0 deletions
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5
include/linux/nl80211.h
View File

@ -526,6 +526,9 @@ enum nl80211_rate_info {
* @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_sta_info_txrate.
* @NL80211_STA_INFO_RX_PACKETS: total received packet (u32, from this station)
* @NL80211_STA_INFO_TX_PACKETS: total transmitted packets (u32, to this
* station)
*/
enum nl80211_sta_info {
__NL80211_STA_INFO_INVALID,
@ -537,6 +540,8 @@ enum nl80211_sta_info {
NL80211_STA_INFO_PLINK_STATE,
NL80211_STA_INFO_SIGNAL,
NL80211_STA_INFO_TX_BITRATE,
NL80211_STA_INFO_RX_PACKETS,
NL80211_STA_INFO_TX_PACKETS,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,

8
include/net/cfg80211.h
View File

@ -178,6 +178,8 @@ struct station_parameters {
* @STATION_INFO_SIGNAL: @signal filled
* @STATION_INFO_TX_BITRATE: @tx_bitrate 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
*/
enum station_info_flags {
STATION_INFO_INACTIVE_TIME = 1<<0,
@ -188,6 +190,8 @@ enum station_info_flags {
STATION_INFO_PLINK_STATE = 1<<5,
STATION_INFO_SIGNAL = 1<<6,
STATION_INFO_TX_BITRATE = 1<<7,
STATION_INFO_RX_PACKETS = 1<<8,
STATION_INFO_TX_PACKETS = 1<<9,
};
/**
@ -235,6 +239,8 @@ struct rate_info {
* @plink_state: mesh peer link state
* @signal: signal strength of last received packet in dBm
* @txrate: current unicast bitrate to this station
* @rx_packets: packets received from this station
* @tx_packets: packets transmitted to this station
*/
struct station_info {
u32 filled;
@ -246,6 +252,8 @@ struct station_info {
u8 plink_state;
s8 signal;
struct rate_info txrate;
u32 rx_packets;
u32 tx_packets;
};
/**

4
net/mac80211/cfg.c
View File

@ -341,11 +341,15 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
sinfo->filled = STATION_INFO_INACTIVE_TIME |
STATION_INFO_RX_BYTES |
STATION_INFO_TX_BYTES |
STATION_INFO_RX_PACKETS |
STATION_INFO_TX_PACKETS |
STATION_INFO_TX_BITRATE;
sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
sinfo->rx_bytes = sta->rx_bytes;
sinfo->tx_bytes = sta->tx_bytes;
sinfo->rx_packets = sta->rx_packets;
sinfo->tx_packets = sta->tx_packets;
if (sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
sinfo->filled |= STATION_INFO_SIGNAL;

6
net/wireless/nl80211.c
View File

@ -1206,6 +1206,12 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
nla_nest_end(msg, txrate);
}
if (sinfo->filled & STATION_INFO_RX_PACKETS)
NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
sinfo->rx_packets);
if (sinfo->filled & STATION_INFO_TX_PACKETS)
NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
sinfo->tx_packets);
nla_nest_end(msg, sinfoattr);
return genlmsg_end(msg, hdr);