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Date: Wed, 12 Jun 2013 03:00:42 -0500 From: Calvin Owens <jcalvinowens@...il.com> To: Johannes Berg <johannes@...solutions.net> Cc: "Luis R. Rodriguez" <mcgrof@....qualcomm.com>, "John W. Linville" <linville@...driver.com>, Felix Fietkau <nbd@...nwrt.org>, linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org, ath9k-devel@...ts.ath9k.org, netdev@...r.kernel.org, jcalvinowens@...il.com Subject: [PATCH] mac80211: Use RCU protection in ieee80211_get_tx_rates() Copying the rate table should be done in an RCU read-side critical section. Signed-off-by: Calvin Owens <jcalvinowens@...il.com> --- 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-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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