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mac80211: minstrel_ht: replace some occurences of MCS_GROUP_RATES 

Consecutive MCSes in [8*(NSS-1)->8*NSS[ have the same number NSS of
streams (except for MCS32 which is mishandled ATM).
ATM minstrel_ht uses MCS_GROUP_RATES in place of this 8 modulus.
This change replaces such occurences and by doing so allows for different
values of MCS_GROUP_RATES (e.g to cope with VHT MCS8,9).

Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Karl Beldan 2013-11-11 13:12:55 +01:00 committed by Johannes Berg
parent 21f659bf1f
commit 7a5e3fa2c8
2 changed files with 5 additions and 7 deletions
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9
net/mac80211/rc80211_minstrel_ht.c
View File

@ -135,7 +135,7 @@ minstrel_ht_update_rates(struct minstrel_priv *mp, struct minstrel_ht_sta *mi);
static int
minstrel_ht_get_group_idx(struct ieee80211_tx_rate *rate)
{
return GROUP_IDX((rate->idx / MCS_GROUP_RATES) + 1,
return GROUP_IDX((rate->idx / 8) + 1,
!!(rate->flags & IEEE80211_TX_RC_SHORT_GI),
!!(rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH));
}
@ -148,7 +148,7 @@ minstrel_ht_get_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
if (rate->flags & IEEE80211_TX_RC_MCS) {
group = minstrel_ht_get_group_idx(rate);
idx = rate->idx % MCS_GROUP_RATES;
idx = rate->idx % 8;
} else {
group = MINSTREL_CCK_GROUP;
@ -636,8 +636,7 @@ minstrel_ht_set_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
idx = mp->cck_rates[index % ARRAY_SIZE(mp->cck_rates)];
flags = 0;
} else {
idx = index % MCS_GROUP_RATES +
(group->streams - 1) * MCS_GROUP_RATES;
idx = index % MCS_GROUP_RATES + (group->streams - 1) * 8;
flags = IEEE80211_TX_RC_MCS | group->flags;
}
@ -817,7 +816,7 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
}
rate->idx = sample_idx % MCS_GROUP_RATES +
(sample_group->streams - 1) * MCS_GROUP_RATES;
(sample_group->streams - 1) * 8;
rate->flags = IEEE80211_TX_RC_MCS | sample_group->flags;
}

3
net/mac80211/rc80211_minstrel_ht_debugfs.c
View File

@ -54,8 +54,7 @@ minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
int r = bitrates[j % 4];
p += sprintf(p, " %2u.%1uM", r / 10, r % 10);
} else {
p += sprintf(p, " MCS%-2u", (mg->streams - 1) *
MCS_GROUP_RATES + j);
p += sprintf(p, " MCS%-2u", (mg->streams - 1) * 8 + j);
}
tp = mr->cur_tp / 10;