Search Linux Wireless

[PATCH] mac80211: Use RCU protection in ieee80211_get_tx_rates()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Copying the rate table should be done in an RCU read-side critical
section.

Signed-off-by: Calvin Owens <jcalvinowens@xxxxxxxxx>
---
 net/mac80211/rate.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index d3f414f..090d9b0 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -538,6 +538,8 @@ static void rate_control_fill_sta_table(struct ieee80211_sta *sta,
 	struct ieee80211_sta_rates *ratetbl = NULL;
 	int i;
 
+	rcu_read_lock();
+
 	if (sta && !info->control.skip_table)
 		ratetbl = rcu_dereference(sta->rates);
 
@@ -566,6 +568,8 @@ static void rate_control_fill_sta_table(struct ieee80211_sta *sta,
 		if (rates[i].idx < 0 || !rates[i].count)
 			break;
 	}
+
+	rcu_read_unlock();
 }
 
 static void rate_control_apply_mask(struct ieee80211_sub_if_data *sdata,
-- 
1.8.2.1

--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Host AP]     [ATH6KL]     [Linux Wireless Personal Area Network]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Linux Kernel]     [IDE]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite Hiking]     [MIPS Linux]     [ARM Linux]     [Linux RAID]

  Powered by Linux