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authorFelix Fietkau <nbd@openwrt.org>2013-04-16 15:38:43 +0400
committerJohannes Berg <johannes.berg@intel.com>2013-04-17 01:42:30 +0400
commit991fec091061b901e4fdcc8af4fd25d24a5a7bab (patch)
treee85082dc9b42276fb9695ff02ca1461f406e4042 /net/mac80211
parent2ffbe6d333664a089f17b13aa79eefe38f794bb7 (diff)
downloadlinux-991fec091061b901e4fdcc8af4fd25d24a5a7bab.tar.xz
mac80211: fix CTS protection handling
The rates[0] CTS and RTS flags are only set after rate control has been called, so minstrel cannot use them to for setting the number of retries. This patch adds two new flags to explicitly indicate RTS/CTS use. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/rc80211_minstrel.c6
-rw-r--r--net/mac80211/tx.c8
2 files changed, 12 insertions, 2 deletions
diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c
index 1c36c9b4fa4a..eda290fb8bd2 100644
--- a/net/mac80211/rc80211_minstrel.c
+++ b/net/mac80211/rc80211_minstrel.c
@@ -209,9 +209,9 @@ minstrel_get_retry_count(struct minstrel_rate *mr,
{
unsigned int retry = mr->adjusted_retry_count;
- if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
+ if (info->control.use_rts)
retry = max(2U, min(mr->retry_count_rtscts, retry));
- else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
+ else if (info->control.use_cts_prot)
retry = max(2U, min(mr->retry_count_cts, retry));
return retry;
}
@@ -460,6 +460,8 @@ minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband,
} while ((tx_time < mp->segment_size) &&
(++mr->retry_count < mp->max_retry));
mr->adjusted_retry_count = mr->retry_count;
+ if (!(sband->bitrates[i].flags & IEEE80211_RATE_ERP_G))
+ mr->retry_count_cts = mr->retry_count;
}
for (i = n; i < sband->n_bitrates; i++) {
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 15c1b286e280..6ca857f8f424 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -656,6 +656,9 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
txrc.rts = rts = true;
}
+ info->control.use_rts = rts;
+ info->control.use_cts_prot = tx->sdata->vif.bss_conf.use_cts_prot;
+
/*
* Use short preamble if the BSS can handle it, but not for
* management frames unless we know the receiver can handle
@@ -766,6 +769,11 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
*/
if (rc_rate->flags & IEEE80211_TX_RC_MCS) {
WARN_ON(rc_rate->idx > 76);
+
+ if (!(rc_rate->flags & IEEE80211_TX_RC_USE_RTS_CTS) &&
+ tx->sdata->vif.bss_conf.use_cts_prot)
+ rc_rate->flags |=
+ IEEE80211_TX_RC_USE_CTS_PROTECT;
continue;
}