Return-path: Received: from mail.neratec.ch ([80.75.119.105]:51334 "EHLO mail.neratec.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755300Ab1JCKaM (ORCPT ); Mon, 3 Oct 2011 06:30:12 -0400 From: Zefir Kurtisi To: linux-wireless@vger.kernel.org, ath9k-devel@lists.ath9k.org Cc: kgiori@qca.qualcomm.com, rodrigue@qca.qualcomm.com, nbd@openwrt.org, Zefir Kurtisi Subject: [RFC 1/6] ath9k: add DFS statistics to debugfs Date: Mon, 3 Oct 2011 12:29:13 +0200 Message-Id: <1317637758-11907-2-git-send-email-zefir.kurtisi@neratec.com> (sfid-20111003_123020_812075_0650122A) In-Reply-To: <1317637758-11907-1-git-send-email-zefir.kurtisi@neratec.com> References: <1317637758-11907-1-git-send-email-zefir.kurtisi@neratec.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: Signed-off-by: Zefir Kurtisi --- drivers/net/wireless/ath/ath9k/debug.c | 51 ++++++++++++++++++++++++++++++++ drivers/net/wireless/ath/ath9k/debug.h | 29 ++++++++++++++++++ 2 files changed, 80 insertions(+), 0 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c index cdece82..6ad2266 100644 --- a/drivers/net/wireless/ath/ath9k/debug.c +++ b/drivers/net/wireless/ath/ath9k/debug.c @@ -89,6 +89,53 @@ static const struct file_operations fops_debug = { #endif + +#ifdef CONFIG_ATH9K_DFS + +#define DFS_STAT(s, p) \ + len += snprintf(buf + len, size - len, "%28s : %10u\n", s, \ + sc->debug.stats.dfs_stats.p); + +static ssize_t read_file_dfs(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath_softc *sc = file->private_data; + char *buf; + unsigned int len = 0, size = 8000; + ssize_t retval = 0; + + buf = kzalloc(size, GFP_KERNEL); + if (buf == NULL) + return -ENOMEM; + + DFS_STAT("DFS pulses detected ", pulses_detected); + DFS_STAT("Datalen discards ", datalen_discards); + DFS_STAT("RSSI discards ", rssi_discards); + DFS_STAT("BW info discards ", bwinfo_discards); + DFS_STAT("Primary channel pulses ", pri_phy_errors); + DFS_STAT("Secondary channel pulses", ext_phy_errors); + DFS_STAT("Dual channel pulses ", dc_phy_errors); + + if (len > size) + len = size; + + retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + + return retval; +} + + +static const struct file_operations fops_dfs_stats = { + .read = read_file_dfs, + .open = ath9k_debugfs_open, + .owner = THIS_MODULE, + .llseek = default_llseek, +}; +#endif /* CONFIG_ATH9K_DFS */ + + + #define DMA_BUF_LEN 1024 static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf, @@ -1385,6 +1432,10 @@ int ath9k_init_debug(struct ath_hw *ah) debugfs_create_u32("chanbw", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, &sc->chan_bw); +#ifdef CONFIG_ATH9K_DFS + debugfs_create_file("dfs_stats", S_IRUSR, sc->debug.debugfs_phy, sc, + &fops_dfs_stats); +#endif sc->debug.regidx = 0; return 0; } diff --git a/drivers/net/wireless/ath/ath9k/debug.h b/drivers/net/wireless/ath/ath9k/debug.h index 4a04510..3a3c3b7 100644 --- a/drivers/net/wireless/ath/ath9k/debug.h +++ b/drivers/net/wireless/ath/ath9k/debug.h @@ -25,8 +25,10 @@ struct ath_buf; #ifdef CONFIG_ATH9K_DEBUGFS #define TX_STAT_INC(q, c) sc->debug.stats.txstats[q].c++ +#define DFS_STAT_INC(sc, c) (sc->debug.stats.dfs_stats.c++) #else #define TX_STAT_INC(q, c) do { } while (0) +#define DFS_STAT_INC(sc, c) do { } while (0) #endif #ifdef CONFIG_ATH9K_DEBUGFS @@ -171,10 +173,37 @@ struct ath_rx_stats { u8 rs_antenna; }; +#ifdef CONFIG_ATH9K_DFS +/** + * struct ath_dfs_stats - DFS Statistics + * + * @pulses_detected: No. of pulses detected so far + * @datalen_discards: No. of pulses discarded due to invalid datalen + * @rssi_discards: No. of pulses discarded due to invalid RSSI + * @bwinfo_discards: No. of pulses discarded due to invalid BW info + * @pri_phy_errors: No. of pulses reported for primary channel + * @ext_phy_errors: No. of pulses reported for extension channel + * @dc_phy_errors: No. of pulses reported for primary + extension channel + */ +struct ath_dfs_stats { + u32 pulses_detected; + u32 datalen_discards; + u32 rssi_discards; + u32 bwinfo_discards; + u32 pri_phy_errors; + u32 ext_phy_errors; + u32 dc_phy_errors; +}; +#endif + + struct ath_stats { struct ath_interrupt_stats istats; struct ath_tx_stats txstats[ATH9K_NUM_TX_QUEUES]; struct ath_rx_stats rxstats; +#ifdef CONFIG_ATH9K_DFS + struct ath_dfs_stats dfs_stats; +#endif }; struct ath9k_debug { -- 1.7.4.1