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kernel/iwlwifi_-move-plcp-check-to...

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Backport of the following upstream commit...
commit beac5498b792ed8420885ee23e8d4f2885ee2d13
Author: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Date: Thu Mar 4 13:38:58 2010 -0800
iwlwifi: move plcp check to separated function
Move the plcp error checking into stand alone function and pointed by ops
to accommodate devices not needing this recovery.
Signed-off-by: Trieu 'Andrew' Nguyen <trieux.t.nguyen@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
diff -up linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-1000.c.orig linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-1000.c
--- linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-1000.c.orig 2010-04-13 14:40:14.000000000 -0400
+++ linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-1000.c 2010-04-13 14:40:43.000000000 -0400
@@ -139,6 +139,7 @@ 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,
};
static struct iwl_ops iwl1000_ops = {
diff -up linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-4965.c.orig linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-4965.c
--- linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-4965.c.orig 2010-04-13 14:40:14.000000000 -0400
+++ linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-4965.c 2010-04-13 14:41:23.000000000 -0400
@@ -2213,6 +2213,7 @@ 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,
};
static struct iwl_ops iwl4965_ops = {
diff -up linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-5000.c.orig linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-5000.c
--- linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-5000.c.orig 2010-04-13 14:40:14.000000000 -0400
+++ linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-5000.c 2010-04-13 14:40:43.000000000 -0400
@@ -1507,6 +1507,7 @@ 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,
};
static struct iwl_lib_ops iwl5150_lib = {
@@ -1560,6 +1561,7 @@ 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,
};
static struct iwl_ops iwl5000_ops = {
diff -up linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-6000.c.orig linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-6000.c
--- linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-6000.c.orig 2010-04-13 14:40:14.000000000 -0400
+++ linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-6000.c 2010-04-13 14:42:29.000000000 -0400
@@ -251,6 +251,7 @@ 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,
};
static struct iwl_ops iwl6000_ops = {
diff -up linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-core.h.orig linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-core.h
--- linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-core.h.orig 2010-04-13 14:40:14.000000000 -0400
+++ linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-core.h 2010-04-13 14:43:12.000000000 -0400
@@ -189,6 +189,9 @@ 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,
+ struct iwl_rx_packet *pkt);
};
struct iwl_led_ops {
@@ -432,6 +435,8 @@ 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,
+ struct iwl_rx_packet *pkt);
void iwl_rx_statistics(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb);
void iwl_reply_statistics(struct iwl_priv *priv,
diff -up linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-rx.c.orig linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-rx.c
--- linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-rx.c.orig 2010-04-13 14:40:14.000000000 -0400
+++ linux-2.6.33.noarch/drivers/net/wireless/iwlwifi/iwl-rx.c 2010-04-13 14:40:43.000000000 -0400
@@ -594,28 +594,18 @@ static void iwl_accumulative_statistics(
#define REG_RECALIB_PERIOD (60)
#define PLCP_MSG "plcp_err exceeded %u, %u, %u, %u, %u, %d, %u mSecs\n"
-void iwl_rx_statistics(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
+/*
+ * This function checks for plcp error.
+ * - When the plcp error is exceeding the thresholds, it will reset the radio
+ * to improve the throughput.
+ */
+void iwl_recover_from_statistics(struct iwl_priv *priv,
+ struct iwl_rx_packet *pkt)
{
- int change;
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
int combined_plcp_delta;
unsigned int plcp_msec;
unsigned long plcp_received_jiffies;
- IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",
- (int)sizeof(priv->statistics),
- le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
-
- change = ((priv->statistics.general.temperature !=
- pkt->u.stats.general.temperature) ||
- ((priv->statistics.flag &
- STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
- (pkt->u.stats.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK)));
-
-#ifdef CONFIG_IWLWIFI_DEBUG
- iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats);
-#endif
/*
* check for plcp_err and trigger radio reset if it exceeds
* the plcp error threshold plcp_delta.
@@ -636,11 +626,11 @@ void iwl_rx_statistics(struct iwl_priv *
le32_to_cpu(priv->statistics.rx.ofdm_ht.plcp_err));
if ((combined_plcp_delta > 0) &&
- ((combined_plcp_delta * 100) / plcp_msec) >
+ ((combined_plcp_delta * 100) / plcp_msec) >
priv->cfg->plcp_delta_threshold) {
/*
- * if plcp_err exceed the threshold, the following
- * data is printed in csv format:
+ * if plcp_err exceed the threshold,
+ * the following data is printed in csv format:
* Text: plcp_err exceeded %d,
* Received ofdm.plcp_err,
* Current ofdm.plcp_err,
@@ -655,9 +645,8 @@ void iwl_rx_statistics(struct iwl_priv *
le32_to_cpu(priv->statistics.rx.ofdm.plcp_err),
le32_to_cpu(pkt->u.stats.rx.ofdm_ht.plcp_err),
le32_to_cpu(
- priv->statistics.rx.ofdm_ht.plcp_err),
+ priv->statistics.rx.ofdm_ht.plcp_err),
combined_plcp_delta, plcp_msec);
-
/*
* Reset the RF radio due to the high plcp
* error rate
@@ -665,6 +654,31 @@ void iwl_rx_statistics(struct iwl_priv *
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)
+{
+ int change;
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+
+
+ IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",
+ (int)sizeof(priv->statistics),
+ le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
+
+ change = ((priv->statistics.general.temperature !=
+ pkt->u.stats.general.temperature) ||
+ ((priv->statistics.flag &
+ STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
+ (pkt->u.stats.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK)));
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+ iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats);
+#endif
+ if (priv->cfg->ops->lib->recover_from_statistics)
+ priv->cfg->ops->lib->recover_from_statistics(priv, pkt);
memcpy(&priv->statistics, &pkt->u.stats, sizeof(priv->statistics));
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