diff options
| -rw-r--r-- | include/net/mac80211.h | 4 | ||||
| -rw-r--r-- | net/mac80211/debugfs.c | 1 | ||||
| -rw-r--r-- | net/mac80211/rc80211_minstrel_ht.c | 25 | ||||
| -rw-r--r-- | net/mac80211/rc80211_minstrel_ht_debugfs.c | 7 |
4 files changed, 29 insertions, 8 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 5d36eacf401e..a285c2bfd14e 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -2190,6 +2190,9 @@ struct ieee80211_txq { * MMPDUs on station interfaces. This of course requires the driver to use * TXQs to start with. * + * @IEEE80211_HW_TX_STATUS_NO_AMPDU_LEN: Driver does not report accurate A-MPDU + * length in tx status information + * * @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays */ enum ieee80211_hw_flags { @@ -2238,6 +2241,7 @@ enum ieee80211_hw_flags { IEEE80211_HW_BUFF_MMPDU_TXQ, IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, IEEE80211_HW_STA_MMPDU_TXQ, + IEEE80211_HW_TX_STATUS_NO_AMPDU_LEN, /* keep last, obviously */ NUM_IEEE80211_HW_FLAGS diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index 81c5fec2eae7..343ad0a915e4 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -218,6 +218,7 @@ static const char *hw_flag_names[] = { FLAG(BUFF_MMPDU_TXQ), FLAG(SUPPORTS_VHT_EXT_NSS_BW), FLAG(STA_MMPDU_TXQ), + FLAG(TX_STATUS_NO_AMPDU_LEN), #undef FLAG }; diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c index f466ec37d161..ccaf951e4e31 100644 --- a/net/mac80211/rc80211_minstrel_ht.c +++ b/net/mac80211/rc80211_minstrel_ht.c @@ -294,6 +294,15 @@ minstrel_get_ratestats(struct minstrel_ht_sta *mi, int index) return &mi->groups[index / MCS_GROUP_RATES].rates[index % MCS_GROUP_RATES]; } +static unsigned int +minstrel_ht_avg_ampdu_len(struct minstrel_ht_sta *mi) +{ + if (!mi->avg_ampdu_len) + return AVG_AMPDU_SIZE; + + return MINSTREL_TRUNC(mi->avg_ampdu_len); +} + /* * Return current throughput based on the average A-MPDU length, taking into * account the expected number of retransmissions and their expected length @@ -309,7 +318,7 @@ minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate, return 0; if (group != MINSTREL_CCK_GROUP) - nsecs = 1000 * mi->overhead / MINSTREL_TRUNC(mi->avg_ampdu_len); + nsecs = 1000 * mi->overhead / minstrel_ht_avg_ampdu_len(mi); nsecs += minstrel_mcs_groups[group].duration[rate] << minstrel_mcs_groups[group].shift; @@ -503,8 +512,12 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi) u16 tmp_cck_tp_rate[MAX_THR_RATES], index; if (mi->ampdu_packets > 0) { - mi->avg_ampdu_len = minstrel_ewma(mi->avg_ampdu_len, - MINSTREL_FRAC(mi->ampdu_len, mi->ampdu_packets), EWMA_LEVEL); + if (!ieee80211_hw_check(mp->hw, TX_STATUS_NO_AMPDU_LEN)) + mi->avg_ampdu_len = minstrel_ewma(mi->avg_ampdu_len, + MINSTREL_FRAC(mi->ampdu_len, mi->ampdu_packets), + EWMA_LEVEL); + else + mi->avg_ampdu_len = 0; mi->ampdu_len = 0; mi->ampdu_packets = 0; } @@ -709,7 +722,9 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband, mi->ampdu_len += info->status.ampdu_len; if (!mi->sample_wait && !mi->sample_tries && mi->sample_count > 0) { - mi->sample_wait = 16 + 2 * MINSTREL_TRUNC(mi->avg_ampdu_len); + int avg_ampdu_len = minstrel_ht_avg_ampdu_len(mi); + + mi->sample_wait = 16 + 2 * avg_ampdu_len; mi->sample_tries = 1; mi->sample_count--; } @@ -777,7 +792,7 @@ minstrel_calc_retransmit(struct minstrel_priv *mp, struct minstrel_ht_sta *mi, unsigned int cw = mp->cw_min; unsigned int ctime = 0; unsigned int t_slot = 9; /* FIXME */ - unsigned int ampdu_len = MINSTREL_TRUNC(mi->avg_ampdu_len); + unsigned int ampdu_len = minstrel_ht_avg_ampdu_len(mi); unsigned int overhead = 0, overhead_rtscts = 0; mrs = minstrel_get_ratestats(mi, index); diff --git a/net/mac80211/rc80211_minstrel_ht_debugfs.c b/net/mac80211/rc80211_minstrel_ht_debugfs.c index 57820a5f2c16..31641d0b0f5c 100644 --- a/net/mac80211/rc80211_minstrel_ht_debugfs.c +++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c @@ -160,9 +160,10 @@ minstrel_ht_stats_open(struct inode *inode, struct file *file) "lookaround %d\n", max(0, (int) mi->total_packets - (int) mi->sample_packets), mi->sample_packets); - p += sprintf(p, "Average # of aggregated frames per A-MPDU: %d.%d\n", - MINSTREL_TRUNC(mi->avg_ampdu_len), - MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10); + if (mi->avg_ampdu_len) + p += sprintf(p, "Average # of aggregated frames per A-MPDU: %d.%d\n", + MINSTREL_TRUNC(mi->avg_ampdu_len), + MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10); ms->len = p - ms->buf; WARN_ON(ms->len + sizeof(*ms) > 32768); |