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iwlwifi: new debugging feature for dumping data traffic

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The traffic buffer will only beallocated and used if either bit 23
(IWL_DX_TX) or bit 24 (IWL_DL_RX) of "debug" is set;
example: "debug=0x800000" - log tx data traffic
         "debug=0x1000000" - log rx data traffic
         "debug=0x1800000" - log both tx and rx traffic

The traffic log will store the beginning portion (64 bytes)  of the
latest 256 of tx and rx packets in the round-robbin buffer for
debugging,
user can examine the log through debugfs file.

How to display the current logged tx/rx traffic and txfifo and rxfifo
read/write point:
"cat traffic_log" in /sys/kernel/debug/ieee80211/phy0/iwlagn/debug
directory

By echo "0" to traffic_log file will empty the traffic log buffer and
reset both tx and rx taffic log index to 0.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Wey-Yi Guy
2009-08-07 15:41:39 -07:00
committed by John W. Linville
parent 7aafef1c6e
commit 20594eb0da
10 changed files with 262 additions and 5 deletions
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1
drivers/net/wireless/iwlwifi/iwl-3945.c
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@@ -679,6 +679,7 @@ static void iwl3945_rx_reply_rx(struct iwl_priv *priv,
/* Set "1" to report good data frames in groups of 100 */
iwl3945_dbg_report_frame(priv, pkt, header, 1);
iwl_dbg_log_rx_data_frame(priv, le16_to_cpu(rx_hdr->len), header);
if (network_packet) {
priv->last_beacon_time = le32_to_cpu(rx_end->beacon_timestamp);