iwlwifi: new debugging feature for dumping data traffic
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>
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index dd66148..40a9167 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -300,7 +300,35 @@
int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
struct ieee80211_tx_queue_stats *stats);
void iwl_mac_reset_tsf(struct ieee80211_hw *hw);
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+int iwl_alloc_traffic_mem(struct iwl_priv *priv);
+void iwl_free_traffic_mem(struct iwl_priv *priv);
+void iwl_reset_traffic_log(struct iwl_priv *priv);
+void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
+ u16 length, struct ieee80211_hdr *header);
+void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
+ u16 length, struct ieee80211_hdr *header);
+#else
+static inline int iwl_alloc_traffic_mem(struct iwl_priv *priv)
+{
+ return 0;
+}
+static inline void iwl_free_traffic_mem(struct iwl_priv *priv)
+{
+}
+static inline void iwl_reset_traffic_log(struct iwl_priv *priv)
+{
+}
+static inline void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
+ u16 length, struct ieee80211_hdr *header)
+{
+}
+static inline void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
+ u16 length, struct ieee80211_hdr *header)
+{
+}
+#endif
/*****************************************************
* RX handlers.
* **************************************************/