Commit 11fc5249 authored by Wey-Yi Guy's avatar Wey-Yi Guy Committed by John W. Linville
Browse files

iwlwifi: add num_of_sos_stats to statistics counter 



When uCode detects number of beacon missed consecutively above the
internal missed beacon threshold (set by uCode), it will reset and
re-tune the radio in order to get out of bad PHY state.

This "num_of_sos_states" counter monitors number of time uCode
encounters this bad condition and has to re-tune the radio.

Signed-off-by: default avatarWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: default avatarZhu Yi <yi.zhu@intel.com>
Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent e3ef2164

drivers/net/wireless/iwlwifi/iwl-commands.h

+6 −1
Original line number Diff line number Diff line
@@ -3095,7 +3095,12 @@ struct statistics_general { 
	__le32 ttl_timestamp;

	struct statistics_div div;

	__le32 rx_enable_counter;

	__le32 reserved1;

	/*

	 * num_of_sos_states:

	 *  count the number of times we have to re-tune

	 *  in order to get out of bad PHY status

	 */

	__le32 num_of_sos_states;

	__le32 reserved2;

	__le32 reserved3;

} __attribute__ ((packed));

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

+7 −1
Original line number Diff line number Diff line
@@ -1728,7 +1728,7 @@ static ssize_t iwl_dbgfs_ucode_general_stats_read(struct file *file, 
	struct iwl_priv *priv = file->private_data;

	int pos = 0;

	char *buf;

	int bufsz = sizeof(struct statistics_general) * 8 + 250;

	int bufsz = sizeof(struct statistics_general) * 10 + 300;

	ssize_t ret;

	struct statistics_general *general, *accum_general;

	struct statistics_general *delta_general, *max_general;
@@ -1828,6 +1828,12 @@ static ssize_t iwl_dbgfs_ucode_general_stats_read(struct file *file, 
			 accum_general->rx_enable_counter,

			 delta_general->rx_enable_counter,

			 max_general->rx_enable_counter);

	pos += scnprintf(buf + pos, bufsz - pos, ucode_stats_format,

			 "num_of_sos_states:",

			 le32_to_cpu(general->num_of_sos_states),

			 accum_general->num_of_sos_states,

			 delta_general->num_of_sos_states,

			 max_general->num_of_sos_states);

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

	kfree(buf);

	return ret;

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