Maemo patchset 20101501+0m5

[h-e-n] / net / mac80211 / rc80211_minstrel.c

diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c
index f6d69da..363cbba 100644 (file)
--- a/net/mac80211/rc80211_minstrel.c
+++ b/net/mac80211/rc80211_minstrel.c
@@ -179,6 +179,8 @@ minstrel_tx_status(void *priv, struct ieee80211_supported_band *sband,
 
        if (!mp->has_mrr || (ar[0].rate_idx < 0)) {
                ndx = rix_to_ndx(mi, info->tx_rate_idx);
+               if (ndx < 0)
+                       return;
                tries = info->status.retry_count + 1;
                mi->r[ndx].success += success;
                mi->r[ndx].attempts += tries;
@@ -190,6 +192,8 @@ minstrel_tx_status(void *priv, struct ieee80211_supported_band *sband,
                        break;
 
                ndx = rix_to_ndx(mi, ar[i].rate_idx);
+               if (ndx < 0)
+                       continue;
                mi->r[ndx].attempts += ar[i].limit + 1;
 
                if ((i != 3) && (ar[i + 1].rate_idx < 0))
@@ -224,7 +228,7 @@ minstrel_get_next_sample(struct minstrel_sta_info *mi)
        unsigned int sample_ndx;
        sample_ndx = SAMPLE_TBL(mi, mi->sample_idx, mi->sample_column);
        mi->sample_idx++;
-       if (mi->sample_idx > (mi->n_rates - 2)) {
+       if ((int) mi->sample_idx > (mi->n_rates - 2)) {
                mi->sample_idx = 0;
                mi->sample_column++;
                if (mi->sample_column >= SAMPLE_COLUMNS)
@@ -389,13 +393,16 @@ minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband,
 {
        struct minstrel_sta_info *mi = priv_sta;
        struct minstrel_priv *mp = priv;
-       struct minstrel_rate *mr_ctl;
+       struct ieee80211_local *local = hw_to_local(mp->hw);
+       struct ieee80211_rate *ctl_rate;
        unsigned int i, n = 0;
        unsigned int t_slot = 9; /* FIXME: get real slot time */
 
        mi->lowest_rix = rate_lowest_index(sband, sta);
-       mr_ctl = &mi->r[rix_to_ndx(mi, mi->lowest_rix)];
-       mi->sp_ack_dur = mr_ctl->ack_time;
+       ctl_rate = &sband->bitrates[mi->lowest_rix];
+       mi->sp_ack_dur = ieee80211_frame_duration(local, 10, ctl_rate->bitrate,
+                                                 !!(ctl_rate->flags &
+                                                 IEEE80211_RATE_ERP_G), 1);
 
        for (i = 0; i < sband->n_bitrates; i++) {
                struct minstrel_rate *mr = &mi->r[n];
@@ -410,8 +417,7 @@ minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband,
 
                mr->rix = i;
                mr->bitrate = sband->bitrates[i].bitrate / 5;
-               calc_rate_durations(mi, hw_to_local(mp->hw), mr,
-                               &sband->bitrates[i]);
+               calc_rate_durations(mi, local, mr, &sband->bitrates[i]);
 
                /* calculate maximum number of retransmissions before
                 * fallback (based on maximum segment size) */
@@ -467,8 +473,8 @@ minstrel_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
                return NULL;
 
        for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
-               sband = hw->wiphy->bands[hw->conf.channel->band];
-               if (sband->n_bitrates > max_rates)
+               sband = hw->wiphy->bands[i];
+               if (sband && sband->n_bitrates > max_rates)
                        max_rates = sband->n_bitrates;
        }