iwlwifi: Tune radio to prevent unexpected behavior
We have seen the throughput dropped due to external noisy environment
and the radio is out of tune. There are lot of plcp errors indicating
this condition. Eventually the station can get de-authenticated by the
Access Point. By resetting and tuning the radio, the plcp errors are
reduced or eliminated and the throughput starts to rise.
To prevent unexpected behavior such as drop in throughput or deauthentication,
- The change provides the driver feature to monitor and tune the radio base on
the statistics notification from the uCode.
- It also allows the setting of the plcp error rate threshold via
the plcp_delta under debugfs interface.
Signed-off-by: Trieu 'Andrew' Nguyen <trieux.t.nguyen@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-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index aab6cf2..cbbc0e4 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -1603,6 +1603,7 @@
.led_compensation = 51,
.use_rts_for_ht = true, /* use rts/cts protection */
.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
+ .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
};
struct iwl_cfg iwl5100_bgn_cfg = {
@@ -1627,6 +1628,7 @@
.led_compensation = 51,
.use_rts_for_ht = true, /* use rts/cts protection */
.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
+ .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
};
struct iwl_cfg iwl5100_abg_cfg = {
@@ -1649,6 +1651,7 @@
.use_bsm = false,
.led_compensation = 51,
.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
+ .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
};
struct iwl_cfg iwl5100_agn_cfg = {
@@ -1673,6 +1676,7 @@
.led_compensation = 51,
.use_rts_for_ht = true, /* use rts/cts protection */
.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
+ .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
};
struct iwl_cfg iwl5350_agn_cfg = {
@@ -1697,6 +1701,7 @@
.led_compensation = 51,
.use_rts_for_ht = true, /* use rts/cts protection */
.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
+ .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
};
struct iwl_cfg iwl5150_agn_cfg = {
@@ -1721,6 +1726,7 @@
.led_compensation = 51,
.use_rts_for_ht = true, /* use rts/cts protection */
.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
+ .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
};
struct iwl_cfg iwl5150_abg_cfg = {
@@ -1743,6 +1749,7 @@
.use_bsm = false,
.led_compensation = 51,
.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
+ .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
};
MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_MAX));