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iwlwifi: add a mechanism to disable plcp error checking

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For some devices, especially the upcoming new devices, the plcp error
rate is different. Before the correct error rate can be determine, also
for the debugging purpose; add the mechanism to disable plcp error checking
which cause radio reset happen.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
This commit is contained in:
Wey-Yi Guy 2010-06-17 15:25:00 -07:00 committed by Reinette Chatre
parent 178d159607
commit 680788aca3
4 changed files with 15 additions and 3 deletions
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5
drivers/net/wireless/iwlwifi/iwl-3945.c
View File

@ -406,6 +406,11 @@ static bool iwl3945_good_plcp_health(struct iwl_priv *priv,
unsigned int plcp_msec;
unsigned long plcp_received_jiffies;
if (priv->cfg->plcp_delta_threshold ==
IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE) {
IWL_DEBUG_RADIO(priv, "plcp_err check disabled\n");
return rc;
}
memcpy(&current_stat, pkt->u.raw, sizeof(struct
iwl3945_notif_statistics));
/*

6
drivers/net/wireless/iwlwifi/iwl-agn-rx.c
View File

@ -166,6 +166,12 @@ bool iwl_good_plcp_health(struct iwl_priv *priv,
unsigned int plcp_msec;
unsigned long plcp_received_jiffies;
if (priv->cfg->plcp_delta_threshold ==
IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE) {
IWL_DEBUG_RADIO(priv, "plcp_err check disabled\n");
return rc;
}
/*
* check for plcp_err and trigger radio reset if it exceeds
* the plcp error threshold plcp_delta.

4
drivers/net/wireless/iwlwifi/iwl-debugfs.c
View File

@ -1430,10 +1430,10 @@ static ssize_t iwl_dbgfs_plcp_delta_write(struct file *file,
return -EFAULT;
if (sscanf(buf, "%d", &plcp) != 1)
return -EINVAL;
if ((plcp <= IWL_MAX_PLCP_ERR_THRESHOLD_MIN) ||
if ((plcp < IWL_MAX_PLCP_ERR_THRESHOLD_MIN) ||
(plcp > IWL_MAX_PLCP_ERR_THRESHOLD_MAX))
priv->cfg->plcp_delta_threshold =
IWL_MAX_PLCP_ERR_THRESHOLD_DEF;
IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE;
else
priv->cfg->plcp_delta_threshold = plcp;
return count;

3
drivers/net/wireless/iwlwifi/iwl-dev.h
View File

@ -1036,11 +1036,12 @@ struct iwl_event_log {
* This is the threshold value of plcp error rate per 100mSecs. It is
* used to set and check for the validity of plcp_delta.
*/
#define IWL_MAX_PLCP_ERR_THRESHOLD_MIN (0)
#define IWL_MAX_PLCP_ERR_THRESHOLD_MIN (1)
#define IWL_MAX_PLCP_ERR_THRESHOLD_DEF (50)
#define IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF (100)
#define IWL_MAX_PLCP_ERR_EXT_LONG_THRESHOLD_DEF (200)
#define IWL_MAX_PLCP_ERR_THRESHOLD_MAX (255)
#define IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE (0)
#define IWL_DELAY_NEXT_FORCE_RF_RESET (HZ*3)
#define IWL_DELAY_NEXT_FORCE_FW_RELOAD (HZ*5)