summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--net/mac80211/rc80211_minstrel_ht.c140
-rw-r--r--net/mac80211/rc80211_minstrel_ht.h2
2 files changed, 133 insertions, 9 deletions
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index 273e63689e9a..5f27e6746762 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -333,6 +333,17 @@ minstrel_ht_get_group_idx(struct ieee80211_tx_rate *rate)
!!(rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH));
}
+/*
+ * Look up an MCS group index based on new cfg80211 rate_info.
+ */
+static int
+minstrel_ht_ri_get_group_idx(struct rate_info *rate)
+{
+ return GROUP_IDX((rate->mcs / 8) + 1,
+ !!(rate->flags & RATE_INFO_FLAGS_SHORT_GI),
+ !!(rate->bw & RATE_INFO_BW_40));
+}
+
static int
minstrel_vht_get_group_idx(struct ieee80211_tx_rate *rate)
{
@@ -342,6 +353,18 @@ minstrel_vht_get_group_idx(struct ieee80211_tx_rate *rate)
2*!!(rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH));
}
+/*
+ * Look up an MCS group index based on new cfg80211 rate_info.
+ */
+static int
+minstrel_vht_ri_get_group_idx(struct rate_info *rate)
+{
+ return VHT_GROUP_IDX(rate->nss,
+ !!(rate->flags & RATE_INFO_FLAGS_SHORT_GI),
+ !!(rate->bw & RATE_INFO_BW_40) +
+ 2*!!(rate->bw & RATE_INFO_BW_80));
+}
+
static struct minstrel_rate_stats *
minstrel_ht_get_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
struct ieee80211_tx_rate *rate)
@@ -385,6 +408,50 @@ out:
return &mi->groups[group].rates[idx];
}
+/*
+ * Get the minstrel rate statistics for specified STA and rate info.
+ */
+static struct minstrel_rate_stats *
+minstrel_ht_ri_get_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
+ struct ieee80211_rate_status *rate_status)
+{
+ int group, idx;
+ struct rate_info *rate = &rate_status->rate_idx;
+
+ if (rate->flags & RATE_INFO_FLAGS_MCS) {
+ group = minstrel_ht_ri_get_group_idx(rate);
+ idx = rate->mcs % 8;
+ goto out;
+ }
+
+ if (rate->flags & RATE_INFO_FLAGS_VHT_MCS) {
+ group = minstrel_vht_ri_get_group_idx(rate);
+ idx = rate->mcs;
+ goto out;
+ }
+
+ group = MINSTREL_CCK_GROUP;
+ for (idx = 0; idx < ARRAY_SIZE(mp->cck_rates); idx++) {
+ if (rate->legacy != minstrel_cck_bitrates[ mp->cck_rates[idx] ])
+ continue;
+
+ /* short preamble */
+ if ((mi->supported[group] & BIT(idx + 4)) &&
+ mi->use_short_preamble)
+ idx += 4;
+ goto out;
+ }
+
+ group = MINSTREL_OFDM_GROUP;
+ for (idx = 0; idx < ARRAY_SIZE(mp->ofdm_rates[0]); idx++)
+ if (rate->legacy == minstrel_ofdm_bitrates[ mp->ofdm_rates[mi->band][idx] ])
+ goto out;
+
+ idx = 0;
+out:
+ return &mi->groups[group].rates[idx];
+}
+
static inline struct minstrel_rate_stats *
minstrel_get_ratestats(struct minstrel_ht_sta *mi, int index)
{
@@ -1152,6 +1219,40 @@ minstrel_ht_txstat_valid(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
return false;
}
+/*
+ * Check whether rate_status contains valid information.
+ */
+static bool
+minstrel_ht_ri_txstat_valid(struct minstrel_priv *mp,
+ struct minstrel_ht_sta *mi,
+ struct ieee80211_rate_status *rate_status)
+{
+ int i;
+
+ if (!rate_status)
+ return false;
+ if (!rate_status->try_count)
+ return false;
+
+ if (rate_status->rate_idx.flags & RATE_INFO_FLAGS_MCS ||
+ rate_status->rate_idx.flags & RATE_INFO_FLAGS_VHT_MCS)
+ return true;
+
+ for (i = 0; i < ARRAY_SIZE(mp->cck_rates); i++) {
+ if (rate_status->rate_idx.legacy ==
+ minstrel_cck_bitrates[ mp->cck_rates[i] ])
+ return true;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(mp->ofdm_rates); i++) {
+ if (rate_status->rate_idx.legacy ==
+ minstrel_ofdm_bitrates[ mp->ofdm_rates[mi->band][i] ])
+ return true;
+ }
+
+ return false;
+}
+
static void
minstrel_downgrade_rate(struct minstrel_ht_sta *mi, u16 *idx, bool primary)
{
@@ -1217,16 +1318,34 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
mi->ampdu_packets++;
mi->ampdu_len += info->status.ampdu_len;
- last = !minstrel_ht_txstat_valid(mp, mi, &ar[0]);
- for (i = 0; !last; i++) {
- last = (i == IEEE80211_TX_MAX_RATES - 1) ||
- !minstrel_ht_txstat_valid(mp, mi, &ar[i + 1]);
+ if (st->rates && st->n_rates) {
+ last = !minstrel_ht_ri_txstat_valid(mp, mi, &(st->rates[0]));
+ for (i = 0; !last; i++) {
+ last = (i == st->n_rates - 1) ||
+ !minstrel_ht_ri_txstat_valid(mp, mi,
+ &(st->rates[i + 1]));
+
+ rate = minstrel_ht_ri_get_stats(mp, mi,
+ &(st->rates[i]));
+
+ if (last)
+ rate->success += info->status.ampdu_ack_len;
+
+ rate->attempts += st->rates[i].try_count *
+ info->status.ampdu_len;
+ }
+ } else {
+ last = !minstrel_ht_txstat_valid(mp, mi, &ar[0]);
+ for (i = 0; !last; i++) {
+ last = (i == IEEE80211_TX_MAX_RATES - 1) ||
+ !minstrel_ht_txstat_valid(mp, mi, &ar[i + 1]);
- rate = minstrel_ht_get_stats(mp, mi, &ar[i]);
- if (last)
- rate->success += info->status.ampdu_ack_len;
+ rate = minstrel_ht_get_stats(mp, mi, &ar[i]);
+ if (last)
+ rate->success += info->status.ampdu_ack_len;
- rate->attempts += ar[i].count * info->status.ampdu_len;
+ rate->attempts += ar[i].count * info->status.ampdu_len;
+ }
}
if (mp->hw->max_rates > 1) {
@@ -1583,6 +1702,7 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
u16 ht_cap = sta->deflink.ht_cap.cap;
struct ieee80211_sta_vht_cap *vht_cap = &sta->deflink.vht_cap;
const struct ieee80211_rate *ctl_rate;
+ struct sta_info *sta_info;
bool ldpc, erp;
int use_vht;
int n_supported = 0;
@@ -1701,6 +1821,10 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
n_supported++;
}
+ sta_info = container_of(sta, struct sta_info, sta);
+ mi->use_short_preamble = test_sta_flag(sta_info, WLAN_STA_SHORT_PREAMBLE) &&
+ sta_info->sdata->vif.bss_conf.use_short_preamble;
+
minstrel_ht_update_cck(mp, mi, sband, sta);
minstrel_ht_update_ofdm(mp, mi, sband, sta);
diff --git a/net/mac80211/rc80211_minstrel_ht.h b/net/mac80211/rc80211_minstrel_ht.h
index 06e7126727ad..1766ff0c78d3 100644
--- a/net/mac80211/rc80211_minstrel_ht.h
+++ b/net/mac80211/rc80211_minstrel_ht.h
@@ -180,7 +180,7 @@ struct minstrel_ht_sta {
/* tx flags to add for frames for this sta */
u32 tx_flags;
-
+ bool use_short_preamble;
u8 band;
u8 sample_seq;