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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: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Wey-Yi Guy 2010-01-15 13:43:35 -08:00 committed by John W. Linville
parent e3ef216438
commit 11fc524941
2 changed files with 13 additions and 2 deletions
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7
drivers/net/wireless/iwlwifi/iwl-commands.h
View File

@ -3095,7 +3095,12 @@ struct statistics_general {
__le32 ttl_timestamp; __le32 ttl_timestamp;
struct statistics_div div; struct statistics_div div;
__le32 rx_enable_counter; __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 reserved2;
__le32 reserved3; __le32 reserved3;
} __attribute__ ((packed)); } __attribute__ ((packed));

8
drivers/net/wireless/iwlwifi/iwl-debugfs.c
View File

@ -1728,7 +1728,7 @@ static ssize_t iwl_dbgfs_ucode_general_stats_read(struct file *file,
struct iwl_priv *priv = file->private_data; struct iwl_priv *priv = file->private_data;
int pos = 0; int pos = 0;
char *buf; char *buf;
int bufsz = sizeof(struct statistics_general) * 8 + 250; int bufsz = sizeof(struct statistics_general) * 10 + 300;
ssize_t ret; ssize_t ret;
struct statistics_general *general, *accum_general; struct statistics_general *general, *accum_general;
struct statistics_general *delta_general, *max_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, accum_general->rx_enable_counter,
delta_general->rx_enable_counter, delta_general->rx_enable_counter,
max_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); ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
kfree(buf); kfree(buf);
return ret; return ret;