diff options
Diffstat (limited to 'net/mac80211/rc80211_minstrel_ht.c')
| -rw-r--r-- | net/mac80211/rc80211_minstrel_ht.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c index bccaf854a309..85c1e74b7714 100644 --- a/net/mac80211/rc80211_minstrel_ht.c +++ b/net/mac80211/rc80211_minstrel_ht.c @@ -22,7 +22,7 @@ #define MCS_NBITS (AVG_PKT_SIZE << 3) /* Number of symbols for a packet with (bps) bits per symbol */ -#define MCS_NSYMS(bps) ((MCS_NBITS + (bps) - 1) / (bps)) +#define MCS_NSYMS(bps) DIV_ROUND_UP(MCS_NBITS, (bps)) /* Transmission time (nanoseconds) for a packet containing (syms) symbols */ #define MCS_SYMBOL_TIME(sgi, syms) \ @@ -226,8 +226,9 @@ minstrel_ht_calc_tp(struct minstrel_ht_sta *mi, int group, int rate) nsecs = 1000 * mi->overhead / MINSTREL_TRUNC(mi->avg_ampdu_len); nsecs += minstrel_mcs_groups[group].duration[rate]; - tp = 1000000 * ((prob * 1000) / nsecs); + /* prob is scaled - see MINSTREL_FRAC above */ + tp = 1000000 * ((prob * 1000) / nsecs); mr->cur_tp = MINSTREL_TRUNC(tp); } @@ -1031,6 +1032,22 @@ minstrel_ht_free(void *priv) mac80211_minstrel.free(priv); } +static u32 minstrel_ht_get_expected_throughput(void *priv_sta) +{ + struct minstrel_ht_sta_priv *msp = priv_sta; + struct minstrel_ht_sta *mi = &msp->ht; + int i, j; + + if (!msp->is_ht) + return mac80211_minstrel.get_expected_throughput(priv_sta); + + i = mi->max_tp_rate / MCS_GROUP_RATES; + j = mi->max_tp_rate % MCS_GROUP_RATES; + + /* convert cur_tp from pkt per second in kbps */ + return mi->groups[i].rates[j].cur_tp * AVG_PKT_SIZE * 8 / 1024; +} + static const struct rate_control_ops mac80211_minstrel_ht = { .name = "minstrel_ht", .tx_status = minstrel_ht_tx_status, @@ -1045,6 +1062,7 @@ static const struct rate_control_ops mac80211_minstrel_ht = { .add_sta_debugfs = minstrel_ht_add_sta_debugfs, .remove_sta_debugfs = minstrel_ht_remove_sta_debugfs, #endif + .get_expected_throughput = minstrel_ht_get_expected_throughput, }; |