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Commit 54a9aa65 authored by Wey-Yi Guy's avatar Wey-Yi Guy
Browse files

iwlagn: keep track of failure tx status 



Tx command response sent to host by uCode after completed
the transmission attempt. The status parameter indicates
whether the transmission was successful, or else why if failed.

Here we keep the counters to help understand the different failure
cases.

Signed-off-by: default avatarWey-Yi Guy <wey-yi.w.guy@intel.com>
parent 91835ba4

drivers/net/wireless/iwlwifi/iwl-1000.c

+1 −0
Original line number Diff line number Diff line
@@ -223,6 +223,7 @@ static struct iwl_lib_ops iwl1000_lib = { 
		.tx_stats_read = iwl_ucode_tx_stats_read,

		.general_stats_read = iwl_ucode_general_stats_read,

		.bt_stats_read = iwl_ucode_bt_stats_read,

		.reply_tx_error = iwl_reply_tx_error_read,

	},

	.recover_from_tx_stall = iwl_bg_monitor_recover,

	.check_plcp_health = iwl_good_plcp_health,

drivers/net/wireless/iwlwifi/iwl-4965.c

+1 −0
Original line number Diff line number Diff line
@@ -2289,6 +2289,7 @@ static struct iwl_lib_ops iwl4965_lib = { 
		.tx_stats_read = iwl_ucode_tx_stats_read,

		.general_stats_read = iwl_ucode_general_stats_read,

		.bt_stats_read = iwl_ucode_bt_stats_read,

		.reply_tx_error = iwl_reply_tx_error_read,

	},

	.recover_from_tx_stall = iwl_bg_monitor_recover,

	.check_plcp_health = iwl_good_plcp_health,

drivers/net/wireless/iwlwifi/iwl-5000.c

+2 −0
Original line number Diff line number Diff line
@@ -404,6 +404,7 @@ static struct iwl_lib_ops iwl5000_lib = { 
		.tx_stats_read = iwl_ucode_tx_stats_read,

		.general_stats_read = iwl_ucode_general_stats_read,

		.bt_stats_read = iwl_ucode_bt_stats_read,

		.reply_tx_error = iwl_reply_tx_error_read,

	},

	.recover_from_tx_stall = iwl_bg_monitor_recover,

	.check_plcp_health = iwl_good_plcp_health,
@@ -475,6 +476,7 @@ static struct iwl_lib_ops iwl5150_lib = { 
		.tx_stats_read = iwl_ucode_tx_stats_read,

		.general_stats_read = iwl_ucode_general_stats_read,

		.bt_stats_read = iwl_ucode_bt_stats_read,

		.reply_tx_error = iwl_reply_tx_error_read,

	},

	.recover_from_tx_stall = iwl_bg_monitor_recover,

	.check_plcp_health = iwl_good_plcp_health,

drivers/net/wireless/iwlwifi/iwl-6000.c

+2 −0
Original line number Diff line number Diff line
@@ -329,6 +329,7 @@ static struct iwl_lib_ops iwl6000_lib = { 
		.tx_stats_read = iwl_ucode_tx_stats_read,

		.general_stats_read = iwl_ucode_general_stats_read,

		.bt_stats_read = iwl_ucode_bt_stats_read,

		.reply_tx_error = iwl_reply_tx_error_read,

	},

	.recover_from_tx_stall = iwl_bg_monitor_recover,

	.check_plcp_health = iwl_good_plcp_health,
@@ -404,6 +405,7 @@ static struct iwl_lib_ops iwl6000g2b_lib = { 
		.tx_stats_read = iwl_ucode_tx_stats_read,

		.general_stats_read = iwl_ucode_general_stats_read,

		.bt_stats_read = iwl_ucode_bt_stats_read,

		.reply_tx_error = iwl_reply_tx_error_read,

	},

	.recover_from_tx_stall = iwl_bg_monitor_recover,

	.check_plcp_health = iwl_good_plcp_health,

drivers/net/wireless/iwlwifi/iwl-agn-debugfs.c

+97 −0
Original line number Diff line number Diff line
@@ -1011,3 +1011,100 @@ ssize_t iwl_ucode_bt_stats_read(struct file *file, 
	kfree(buf);

	return ret;

}



ssize_t iwl_reply_tx_error_read(struct file *file,

				char __user *user_buf,

				size_t count, loff_t *ppos)

{

	struct iwl_priv *priv = (struct iwl_priv *)file->private_data;

	int pos = 0;

	char *buf;

	int bufsz = (sizeof(struct reply_tx_error_statistics) * 24) + 200;

	ssize_t ret;



	if (!iwl_is_alive(priv))

		return -EAGAIN;



	buf = kzalloc(bufsz, GFP_KERNEL);

	if (!buf) {

		IWL_ERR(priv, "Can not allocate Buffer\n");

		return -ENOMEM;

	}



	pos += scnprintf(buf + pos, bufsz - pos, "Statistics_TX_Error:\n");

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_DELAY),

			 priv->_agn.reply_tx_stats.pp_delay);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_FEW_BYTES),

			 priv->_agn.reply_tx_stats.pp_few_bytes);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_BT_PRIO),

			 priv->_agn.reply_tx_stats.pp_bt_prio);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_QUIET_PERIOD),

			 priv->_agn.reply_tx_stats.pp_quiet_period);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_CALC_TTAK),

			 priv->_agn.reply_tx_stats.pp_calc_ttak);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",

			 iwl_get_tx_fail_reason(

				TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY),

			 priv->_agn.reply_tx_stats.int_crossed_retry);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_SHORT_LIMIT),

			 priv->_agn.reply_tx_stats.short_limit);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_LONG_LIMIT),

			 priv->_agn.reply_tx_stats.long_limit);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_FIFO_UNDERRUN),

			 priv->_agn.reply_tx_stats.fifo_underrun);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_DRAIN_FLOW),

			 priv->_agn.reply_tx_stats.drain_flow);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_RFKILL_FLUSH),

			 priv->_agn.reply_tx_stats.rfkill_flush);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_LIFE_EXPIRE),

			 priv->_agn.reply_tx_stats.life_expire);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_DEST_PS),

			 priv->_agn.reply_tx_stats.dest_ps);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_HOST_ABORTED),

			 priv->_agn.reply_tx_stats.host_abort);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_BT_RETRY),

			 priv->_agn.reply_tx_stats.pp_delay);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_STA_INVALID),

			 priv->_agn.reply_tx_stats.sta_invalid);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_FRAG_DROPPED),

			 priv->_agn.reply_tx_stats.frag_drop);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_TID_DISABLE),

			 priv->_agn.reply_tx_stats.tid_disable);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_FIFO_FLUSHED),

			 priv->_agn.reply_tx_stats.fifo_flush);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",

			 iwl_get_tx_fail_reason(

				TX_STATUS_FAIL_INSUFFICIENT_CF_POLL),

			 priv->_agn.reply_tx_stats.insuff_cf_poll);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",

			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_FW_DROP),

			 priv->_agn.reply_tx_stats.fail_hw_drop);

	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t%u\n",

			 iwl_get_tx_fail_reason(

				TX_STATUS_FAIL_STA_COLOR_MISMATCH_DROP),

			 priv->_agn.reply_tx_stats.sta_color_mismatch);

	pos += scnprintf(buf + pos, bufsz - pos, "UNKNOWN:\t\t\t%u\n",

			 priv->_agn.reply_tx_stats.unknown);



	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);

	kfree(buf);

	return ret;

}