ath5k: add debugfs file frameerrors
add a debugfs file to see different RX and TX errors as reported in our status descriptors. this can help to diagnose driver problems. statistics can be cleared by writing 'clear' into the frameerrors file. example: # cat /sys/kernel/debug/ath5k/phy0/frameerrors RX --------------------- CRC 27 (11%) PHY 3 (1%) FIFO 0 (0%) decrypt 0 (0%) MIC 0 (0%) process 0 (0%) jumbo 0 (0%) [RX all 245] TX --------------------- retry 2 (9%) FIFO 0 (0%) filter 0 (0%) [TX all 21] Signed-off-by: Bruno Randolf <br1@einfach.org> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bruno Randolf
John W. Linville
Родитель
919154540a
Коммит
7644395f8d
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@ -1902,18 +1902,28 @@ ath5k_tasklet_rx(unsigned long data)
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break;
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else if (unlikely(ret)) {
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ATH5K_ERR(sc, "error in processing rx descriptor\n");
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sc->stats.rxerr_proc++;
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spin_unlock(&sc->rxbuflock);
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return;
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}
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sc->stats.rx_all_count++;
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if (unlikely(rs.rs_more)) {
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ATH5K_WARN(sc, "unsupported jumbo\n");
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sc->stats.rxerr_jumbo++;
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goto next;
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}
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if (unlikely(rs.rs_status)) {
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if (rs.rs_status & AR5K_RXERR_PHY)
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if (rs.rs_status & AR5K_RXERR_CRC)
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sc->stats.rxerr_crc++;
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if (rs.rs_status & AR5K_RXERR_FIFO)
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sc->stats.rxerr_fifo++;
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if (rs.rs_status & AR5K_RXERR_PHY) {
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sc->stats.rxerr_phy++;
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goto next;
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}
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if (rs.rs_status & AR5K_RXERR_DECRYPT) {
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/*
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* Decrypt error. If the error occurred
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@ -1925,12 +1935,14 @@ ath5k_tasklet_rx(unsigned long data)
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*
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* XXX do key cache faulting
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*/
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sc->stats.rxerr_decrypt++;
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if (rs.rs_keyix == AR5K_RXKEYIX_INVALID &&
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!(rs.rs_status & AR5K_RXERR_CRC))
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goto accept;
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}
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if (rs.rs_status & AR5K_RXERR_MIC) {
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rx_flag |= RX_FLAG_MMIC_ERROR;
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sc->stats.rxerr_mic++;
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goto accept;
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}
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@ -2056,6 +2068,7 @@ ath5k_tx_processq(struct ath5k_softc *sc, struct ath5k_txq *txq)
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break;
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}
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sc->stats.tx_all_count++;
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skb = bf->skb;
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info = IEEE80211_SKB_CB(skb);
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bf->skb = NULL;
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@ -2082,8 +2095,14 @@ ath5k_tx_processq(struct ath5k_softc *sc, struct ath5k_txq *txq)
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if (unlikely(ts.ts_status)) {
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sc->ll_stats.dot11ACKFailureCount++;
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if (ts.ts_status & AR5K_TXERR_FILT)
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if (ts.ts_status & AR5K_TXERR_FILT) {
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info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
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sc->stats.txerr_filt++;
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}
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if (ts.ts_status & AR5K_TXERR_XRETRY)
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sc->stats.txerr_retry++;
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if (ts.ts_status & AR5K_TXERR_FIFO)
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sc->stats.txerr_fifo++;
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} else {
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info->flags |= IEEE80211_TX_STAT_ACK;
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info->status.ack_signal = ts.ts_rssi;
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@ -109,6 +109,18 @@ struct ath5k_rfkill {
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struct ath5k_statistics {
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unsigned int antenna_rx[5]; /* frames count per antenna RX */
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unsigned int antenna_tx[5]; /* frames count per antenna TX */
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unsigned int rx_all_count; /* all RX frames, including errors */
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unsigned int tx_all_count; /* all TX frames, including errors */
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unsigned int rxerr_crc;
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unsigned int rxerr_phy;
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unsigned int rxerr_fifo;
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unsigned int rxerr_decrypt;
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unsigned int rxerr_mic;
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unsigned int rxerr_proc;
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unsigned int rxerr_jumbo;
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unsigned int txerr_retry;
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unsigned int txerr_fifo;
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unsigned int txerr_filt;
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};
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#if CHAN_DEBUG
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@ -465,6 +465,106 @@ static const struct file_operations fops_antenna = {
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};
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/* debugfs: frameerrors */
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static ssize_t read_file_frameerrors(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ath5k_softc *sc = file->private_data;
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struct ath5k_statistics *st = &sc->stats;
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char buf[700];
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unsigned int len = 0;
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len += snprintf(buf+len, sizeof(buf)-len,
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"RX\n---------------------\n");
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len += snprintf(buf+len, sizeof(buf)-len, "CRC\t%d\t(%d%%)\n",
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st->rxerr_crc,
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st->rx_all_count > 0 ?
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st->rxerr_crc*100/st->rx_all_count : 0);
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len += snprintf(buf+len, sizeof(buf)-len, "PHY\t%d\t(%d%%)\n",
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st->rxerr_phy,
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st->rx_all_count > 0 ?
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st->rxerr_phy*100/st->rx_all_count : 0);
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len += snprintf(buf+len, sizeof(buf)-len, "FIFO\t%d\t(%d%%)\n",
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st->rxerr_fifo,
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st->rx_all_count > 0 ?
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st->rxerr_fifo*100/st->rx_all_count : 0);
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len += snprintf(buf+len, sizeof(buf)-len, "decrypt\t%d\t(%d%%)\n",
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st->rxerr_decrypt,
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st->rx_all_count > 0 ?
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st->rxerr_decrypt*100/st->rx_all_count : 0);
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len += snprintf(buf+len, sizeof(buf)-len, "MIC\t%d\t(%d%%)\n",
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st->rxerr_mic,
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st->rx_all_count > 0 ?
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st->rxerr_mic*100/st->rx_all_count : 0);
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len += snprintf(buf+len, sizeof(buf)-len, "process\t%d\t(%d%%)\n",
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st->rxerr_proc,
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st->rx_all_count > 0 ?
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st->rxerr_proc*100/st->rx_all_count : 0);
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len += snprintf(buf+len, sizeof(buf)-len, "jumbo\t%d\t(%d%%)\n",
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st->rxerr_jumbo,
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st->rx_all_count > 0 ?
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st->rxerr_jumbo*100/st->rx_all_count : 0);
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len += snprintf(buf+len, sizeof(buf)-len, "[RX all\t%d]\n",
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st->rx_all_count);
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len += snprintf(buf+len, sizeof(buf)-len,
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"\nTX\n---------------------\n");
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len += snprintf(buf+len, sizeof(buf)-len, "retry\t%d\t(%d%%)\n",
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st->txerr_retry,
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st->tx_all_count > 0 ?
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st->txerr_retry*100/st->tx_all_count : 0);
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len += snprintf(buf+len, sizeof(buf)-len, "FIFO\t%d\t(%d%%)\n",
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st->txerr_fifo,
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st->tx_all_count > 0 ?
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st->txerr_fifo*100/st->tx_all_count : 0);
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len += snprintf(buf+len, sizeof(buf)-len, "filter\t%d\t(%d%%)\n",
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st->txerr_filt,
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st->tx_all_count > 0 ?
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st->txerr_filt*100/st->tx_all_count : 0);
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len += snprintf(buf+len, sizeof(buf)-len, "[TX all\t%d]\n",
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st->tx_all_count);
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return simple_read_from_buffer(user_buf, count, ppos, buf, len);
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}
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static ssize_t write_file_frameerrors(struct file *file,
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const char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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struct ath5k_softc *sc = file->private_data;
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struct ath5k_statistics *st = &sc->stats;
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char buf[20];
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if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
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return -EFAULT;
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if (strncmp(buf, "clear", 5) == 0) {
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st->rxerr_crc = 0;
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st->rxerr_phy = 0;
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st->rxerr_fifo = 0;
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st->rxerr_decrypt = 0;
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st->rxerr_mic = 0;
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st->rxerr_proc = 0;
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st->rxerr_jumbo = 0;
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st->rx_all_count = 0;
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st->txerr_retry = 0;
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st->txerr_fifo = 0;
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st->txerr_filt = 0;
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st->tx_all_count = 0;
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printk(KERN_INFO "ath5k debug: cleared frameerrors stats\n");
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}
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return count;
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}
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static const struct file_operations fops_frameerrors = {
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.read = read_file_frameerrors,
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.write = write_file_frameerrors,
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.open = ath5k_debugfs_open,
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.owner = THIS_MODULE,
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};
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/* init */
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void
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@ -498,6 +598,11 @@ ath5k_debug_init_device(struct ath5k_softc *sc)
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sc->debug.debugfs_antenna = debugfs_create_file("antenna",
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S_IWUSR | S_IRUSR,
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sc->debug.debugfs_phydir, sc, &fops_antenna);
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sc->debug.debugfs_frameerrors = debugfs_create_file("frameerrors",
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S_IWUSR | S_IRUSR,
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sc->debug.debugfs_phydir, sc,
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&fops_frameerrors);
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}
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void
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@ -514,6 +619,7 @@ ath5k_debug_finish_device(struct ath5k_softc *sc)
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debugfs_remove(sc->debug.debugfs_beacon);
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debugfs_remove(sc->debug.debugfs_reset);
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debugfs_remove(sc->debug.debugfs_antenna);
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debugfs_remove(sc->debug.debugfs_frameerrors);
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debugfs_remove(sc->debug.debugfs_phydir);
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}
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@ -75,6 +75,7 @@ struct ath5k_dbg_info {
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struct dentry *debugfs_beacon;
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struct dentry *debugfs_reset;
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struct dentry *debugfs_antenna;
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struct dentry *debugfs_frameerrors;
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};
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/**
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