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ath9k: Add tx-failed counter.

Browse source 
This counts any failure during getting packets into
the DMA buffers, including out-of-memory, etc.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ben Greear 2012-04-03 09:16:55 -07:00 committed by John W. Linville
parent 56dc389f76
commit a5a0bca1d8
3 changed files with 4 additions and 0 deletions
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1
drivers/net/wireless/ath/ath9k/debug.c
View file

@ -529,6 +529,7 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
PR("hw-put-tx-buf: ", puttxbuf);
PR("hw-tx-start: ", txstart);
PR("hw-tx-proc-desc: ", txprocdesc);
PR("TX-Failed: ", txfailed);
len += snprintf(buf + len, size - len,
"%s%11p%11p%10p%10p\n", "txq-memory-address:",
sc->tx.txq_map[WME_AC_BE],

2
drivers/net/wireless/ath/ath9k/debug.h
View file

@ -113,6 +113,7 @@ struct ath_interrupt_stats {
* @puttxbuf: Number of times hardware was given txbuf to write.
* @txstart: Number of times hardware was told to start tx.
* @txprocdesc: Number of times tx descriptor was processed
* @txfailed: Out-of-memory or other errors in xmit path.
*/
struct ath_tx_stats {
u32 tx_pkts_all;
@ -135,6 +136,7 @@ struct ath_tx_stats {
u32 puttxbuf;
u32 txstart;
u32 txprocdesc;
u32 txfailed;
};
/**

1
drivers/net/wireless/ath/ath9k/main.c
View file

@ -1152,6 +1152,7 @@ static void ath9k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
if (ath_tx_start(hw, skb, &txctl) != 0) {
ath_dbg(common, XMIT, "TX failed\n");
TX_STAT_INC(txctl.txq->axq_qnum, txfailed);
goto exit;
}