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mac80211: minstrel_ht: move short preamble check out of get_rate 

Test short preamble support in minstrel_ht_update_caps instead of
looking at the per-packet flag. Makes the code more efficient.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau 2016-12-14 20:46:55 +01:00 committed by Johannes Berg
parent 41d085835d
commit 782dda00ab
1 changed files with 5 additions and 17 deletions
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22
net/mac80211/rc80211_minstrel_ht.c
View File

@ -14,6 +14,7 @@
#include <linux/ieee80211.h>
#include <net/mac80211.h>
#include "rate.h"
#include "sta_info.h"
#include "rc80211_minstrel.h"
#include "rc80211_minstrel_ht.h"
@ -1048,22 +1049,6 @@ minstrel_get_sample_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
return sample_idx;
}
static void
minstrel_ht_check_cck_shortpreamble(struct minstrel_priv *mp,
struct minstrel_ht_sta *mi, bool val)
{
u8 supported = mi->supported[MINSTREL_CCK_GROUP];
if (!supported || !mi->cck_supported_short)
return;
if (supported & (mi->cck_supported_short << (val * 4)))
return;
supported ^= mi->cck_supported_short | (mi->cck_supported_short << 4);
mi->supported[MINSTREL_CCK_GROUP] = supported;
}
static void
minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
struct ieee80211_tx_rate_control *txrc)
@ -1087,7 +1072,6 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
minstrel_aggr_check(sta, txrc->skb);
info->flags |= mi->tx_flags;
minstrel_ht_check_cck_shortpreamble(mp, mi, txrc->short_preamble);
#ifdef CONFIG_MAC80211_DEBUGFS
if (mp->fixed_rate_idx != -1)
@ -1168,6 +1152,7 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_mcs_info *mcs = &sta->ht_cap.mcs;
u16 sta_cap = sta->ht_cap.cap;
struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
struct sta_info *sinfo = container_of(sta, struct sta_info, sta);
int use_vht;
int n_supported = 0;
int ack_dur;
@ -1293,6 +1278,9 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
if (!n_supported)
goto use_legacy;
if (test_sta_flag(sinfo, WLAN_STA_SHORT_PREAMBLE))
mi->cck_supported_short |= mi->cck_supported_short << 4;
/* create an initial rate table with the lowest supported rates */
minstrel_ht_update_stats(mp, mi);
minstrel_ht_update_rates(mp, mi);