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iwlwifi: mvm: rs: don't zero tx stats after idle

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Move the tx stats to the persistent area of lq_sta to
avoid them being zeroed out every time rs reinitializes
which happens after tx idle for 5 secs for example.
The automatic zeroing out made them difficult to use.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Eyal Shapira 2014-08-16 01:30:30 +03:00 • committed by Emmanuel Grumbach
parent f3bd58f486
commit f58220f6b9
2 changed files with 10 additions and 7 deletions
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10
drivers/net/wireless/iwlwifi/mvm/rs.c
View file

@ -672,8 +672,10 @@ static int rs_collect_tx_data(struct iwl_lq_sta *lq_sta,
return -EINVAL;
if (tbl->column != RS_COLUMN_INVALID) {
lq_sta->tx_stats[tbl->column][scale_index].total += attempts;
lq_sta->tx_stats[tbl->column][scale_index].success += successes;
struct lq_sta_pers *pers = &lq_sta->pers;
pers->tx_stats[tbl->column][scale_index].total += attempts;
pers->tx_stats[tbl->column][scale_index].success += successes;
}
/* Select window for current tx bit rate */
@ -3171,7 +3173,7 @@ static ssize_t rs_sta_dbgfs_drv_tx_stats_read(struct file *file,
"%s,", column_name[col]);
for (rate = 0; rate < IWL_RATE_COUNT; rate++) {
stats = &(lq_sta->tx_stats[col][rate]);
stats = &(lq_sta->pers.tx_stats[col][rate]);
pos += scnprintf(pos, endpos - pos,
"%llu/%llu,",
stats->success,
@ -3190,7 +3192,7 @@ static ssize_t rs_sta_dbgfs_drv_tx_stats_write(struct file *file,
size_t count, loff_t *ppos)
{
struct iwl_lq_sta *lq_sta = file->private_data;
memset(lq_sta->tx_stats, 0, sizeof(lq_sta->tx_stats));
memset(lq_sta->pers.tx_stats, 0, sizeof(lq_sta->pers.tx_stats));
return count;
}

7
drivers/net/wireless/iwlwifi/mvm/rs.h
View file

@ -333,8 +333,6 @@ struct iwl_lq_sta {
bool ldpc; /* LDPC Rx is supported by the STA */
enum ieee80211_band band;
struct rs_rate_stats tx_stats[RS_COLUMN_COUNT][IWL_RATE_COUNT];
/* The following are bitmaps of rates; IWL_RATE_6M_MASK, etc. */
unsigned long active_legacy_rate;
unsigned long active_siso_rate;
@ -362,11 +360,14 @@ struct iwl_lq_sta {
int tpc_reduce;
/* persistent fields - initialized only once - keep last! */
struct {
struct lq_sta_pers {
#ifdef CONFIG_MAC80211_DEBUGFS
u32 dbg_fixed_rate;
u8 dbg_fixed_txp_reduction;
#endif
u8 chains;
s8 chain_signal[IEEE80211_MAX_CHAINS];
struct rs_rate_stats tx_stats[RS_COLUMN_COUNT][IWL_RATE_COUNT];
struct iwl_mvm *drv;
} pers;
};