diff -up linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-1000.c.orig linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-1000.c
--- linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-1000.c.orig 2010-03-22 16:42:34.000000000 -0400
+++ linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-1000.c 2010-03-22 16:42:57.000000000 -0400
@@ -136,7 +136,8 @@ static struct iwl_lib_ops iwl1000_lib =
.set_ct_kill = iwl1000_set_ct_threshold,
},
.recover_from_tx_stall = iwl_bg_monitor_recover,
- .recover_from_statistics = iwl_recover_from_statistics,
+ .check_plcp_health = iwl_good_plcp_health,
+ .check_ack_health = iwl_good_ack_health,
};
static struct iwl_ops iwl1000_ops = {
diff -up linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-4965.c.orig linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-4965.c
--- linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-4965.c.orig 2010-03-22 16:42:34.000000000 -0400
+++ linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-4965.c 2010-03-22 16:42:57.000000000 -0400
@@ -2340,7 +2340,7 @@ static struct iwl_lib_ops iwl4965_lib =
.temperature = iwl4965_temperature_calib,
.set_ct_kill = iwl4965_set_ct_threshold,
},
- .recover_from_statistics = iwl_recover_from_statistics,
+ .check_plcp_health = iwl_good_plcp_health,
};
static struct iwl_ops iwl4965_ops = {
diff -up linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-5000.c.orig linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-5000.c
--- linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-5000.c.orig 2010-03-22 16:42:34.000000000 -0400
+++ linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-5000.c 2010-03-22 16:42:57.000000000 -0400
@@ -1580,7 +1580,8 @@ struct iwl_lib_ops iwl5000_lib = {
.set_ct_kill = iwl5000_set_ct_threshold,
},
.recover_from_tx_stall = iwl_bg_monitor_recover,
- .recover_from_statistics = iwl_recover_from_statistics,
+ .check_plcp_health = iwl_good_plcp_health,
+ .check_ack_health = iwl_good_ack_health,
};
static struct iwl_lib_ops iwl5150_lib = {
@@ -1634,7 +1635,8 @@ static struct iwl_lib_ops iwl5150_lib =
.set_ct_kill = iwl5150_set_ct_threshold,
},
.recover_from_tx_stall = iwl_bg_monitor_recover,
- .recover_from_statistics = iwl_recover_from_statistics,
+ .check_plcp_health = iwl_good_plcp_health,
+ .check_ack_health = iwl_good_ack_health,
};
struct iwl_ops iwl5000_ops = {
diff -up linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-6000.c.orig linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-6000.c
--- linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-6000.c.orig 2010-03-22 16:42:34.000000000 -0400
+++ linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-6000.c 2010-03-22 16:42:57.000000000 -0400
@@ -138,7 +138,8 @@ static struct iwl_lib_ops iwl6000_lib =
.set_ct_kill = iwl6000_set_ct_threshold,
},
.recover_from_tx_stall = iwl_bg_monitor_recover,
- .recover_from_statistics = iwl_recover_from_statistics,
+ .check_plcp_health = iwl_good_plcp_health,
+ .check_ack_health = iwl_good_ack_health,
};
static struct iwl_hcmd_utils_ops iwl6000_hcmd_utils = {
diff -up linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-core.h.orig linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-core.h
--- linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-core.h.orig 2010-03-22 16:42:34.000000000 -0400
+++ linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-core.h 2010-03-22 16:42:57.000000000 -0400
@@ -185,8 +185,11 @@ struct iwl_lib_ops {
struct iwl_temp_ops temp_ops;
/* recover from tx queue stall */
void (*recover_from_tx_stall)(unsigned long data);
- /* recover from errors showed in statistics */
- void (*recover_from_statistics)(struct iwl_priv *priv,
+ /* check for plcp health */
+ bool (*check_plcp_health)(struct iwl_priv *priv,
+ struct iwl_rx_packet *pkt);
+ /* check for ack health */
+ bool (*check_ack_health)(struct iwl_priv *priv,
struct iwl_rx_packet *pkt);
};
@@ -401,7 +404,9 @@ int iwl_tx_queue_reclaim(struct iwl_priv
/* Handlers */
void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb);
-void iwl_recover_from_statistics(struct iwl_priv *priv,
+bool iwl_good_plcp_health(struct iwl_priv *priv,
+ struct iwl_rx_packet *pkt);
+bool iwl_good_ack_health(struct iwl_priv *priv,
struct iwl_rx_packet *pkt);
void iwl_rx_statistics(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb);
diff -up linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-rx.c.orig linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-rx.c
--- linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-rx.c.orig 2010-03-22 16:42:34.000000000 -0400
+++ linux-2.6.32.noarch/drivers/net/wireless/iwlwifi/iwl-rx.c 2010-03-22 16:45:03.000000000 -0400
@@ -555,24 +555,18 @@ static void iwl_rx_calc_noise(struct iwl
#define BA_TIMEOUT_CNT (5)
#define BA_TIMEOUT_MAX (16)
-#define PLCP_MSG "plcp_err exceeded %u, %u, %u, %u, %u, %d, %u mSecs\n"
-/*
- * This function checks for plcp error, ACK count ratios, aggregated BA
- * timeout retries.
- * - When the ACK count ratio is 0 and aggregated BA timeout retries is
- * exceeding the BA_TIMEOUT_MAX, it will recover the failure by resetting
- * the firmware.
- * - When the plcp error is exceeding the thresholds, it will reset the radio
- * to improve the throughput.
+/**
+ * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
+ *
+ * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
+ * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
+ * operation state.
*/
-void iwl_recover_from_statistics(struct iwl_priv *priv,
- struct iwl_rx_packet *pkt)
+bool iwl_good_ack_health(struct iwl_priv *priv,
+ struct iwl_rx_packet *pkt)
{
- int combined_plcp_delta;
- unsigned int plcp_msec;
- unsigned long plcp_received_jiffies;
- int actual_ack_cnt_delta;
- int expected_ack_cnt_delta;
+ bool rc = true;
+ int actual_ack_cnt_delta, expected_ack_cnt_delta;
int ba_timeout_delta;
actual_ack_cnt_delta =
@@ -594,13 +588,27 @@ void iwl_recover_from_statistics(struct
actual_ack_cnt_delta, expected_ack_cnt_delta);
IWL_DEBUG_RADIO(priv, "agg ba_timeout delta = %d\n",
ba_timeout_delta);
- if ((actual_ack_cnt_delta == 0) &&
- (ba_timeout_delta >= BA_TIMEOUT_MAX)) {
- IWL_DEBUG_RADIO(priv,
- "call iwl_force_reset(IWL_FW_RESET)\n");
- iwl_force_reset(priv, IWL_FW_RESET);
- }
+ if (!actual_ack_cnt_delta &&
+ (ba_timeout_delta >= BA_TIMEOUT_MAX))
+ rc = false;
}
+ return rc;
+}
+EXPORT_SYMBOL(iwl_good_ack_health);
+
+/**
+ * iwl_good_plcp_health - checks for plcp error.
+ *
+ * When the plcp error is exceeding the thresholds, reset the radio
+ * to improve the throughput.
+ */
+bool iwl_good_plcp_health(struct iwl_priv *priv,
+ struct iwl_rx_packet *pkt)
+{
+ bool rc = true;
+ int combined_plcp_delta;
+ unsigned int plcp_msec;
+ unsigned long plcp_received_jiffies;
/*
* check for plcp_err and trigger radio reset if it exceeds
@@ -635,7 +643,8 @@ void iwl_recover_from_statistics(struct
* combined_plcp_delta,
* plcp_msec
*/
- IWL_DEBUG_RADIO(priv, PLCP_MSG,
+ IWL_DEBUG_RADIO(priv, "plcp_err exceeded %u, "
+ "%u, %u, %u, %u, %d, %u mSecs\n",
priv->cfg->plcp_delta_threshold,
le32_to_cpu(pkt->u.stats.rx.ofdm.plcp_err),
le32_to_cpu(priv->statistics.rx.ofdm.plcp_err),
@@ -643,15 +652,42 @@ void iwl_recover_from_statistics(struct
le32_to_cpu(
priv->statistics.rx.ofdm_ht.plcp_err),
combined_plcp_delta, plcp_msec);
- /*
- * Reset the RF radio due to the high plcp
- * error rate
- */
- iwl_force_reset(priv, IWL_RF_RESET);
+ rc = false;
+ }
+ }
+ return rc;
+}
+EXPORT_SYMBOL(iwl_good_plcp_health);
+
+static void iwl_recover_from_statistics(struct iwl_priv *priv,
+ struct iwl_rx_packet *pkt)
+{
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+ if (iwl_is_associated(priv)) {
+ if (priv->cfg->ops->lib->check_ack_health) {
+ if (!priv->cfg->ops->lib->check_ack_health(
+ priv, pkt)) {
+ /*
+ * low ack count detected
+ * restart Firmware
+ */
+ IWL_ERR(priv, "low ack count detected, "
+ "restart firmware\n");
+ iwl_force_reset(priv, IWL_FW_RESET);
+ }
+ } else if (priv->cfg->ops->lib->check_plcp_health) {
+ if (!priv->cfg->ops->lib->check_plcp_health(
+ priv, pkt)) {
+ /*
+ * high plcp error detected
+ * reset Radio
+ */
+ iwl_force_reset(priv, IWL_RF_RESET);
+ }
}
}
}
-EXPORT_SYMBOL(iwl_recover_from_statistics);
void iwl_rx_statistics(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
@@ -670,8 +706,7 @@ void iwl_rx_statistics(struct iwl_priv *
STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
(pkt->u.stats.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK)));
- if (priv->cfg->ops->lib->recover_from_statistics)
- priv->cfg->ops->lib->recover_from_statistics(priv, pkt);
+ iwl_recover_from_statistics(priv, pkt);
memcpy(&priv->statistics, &pkt->u.stats, sizeof(priv->statistics));