tree 5184590de0d70625572e8a7385e30fe26e4d42e4
parent a060bbfe4ee95d115e8f9705a66894ac34e2c475
author Shanyu Zhao <shanyu.zhao@intel.com> 1272392112 -0700
committer John W. Linville <linville@tuxdriver.com> 1272398963 -0400

mac80211: fix rts threshold check

Currently whenever rts thresold is set, every packet will use RTS
protection no matter its size exceeds the threshold or not. This is
due to a bug in the rts threshold check.
	if (len > tx->local->hw.wiphy->rts_threshold) {
		txrc.rts = rts = true;
	}
Basically it is comparing an int (len) and a u32 (rts_threshold),
and the variable len is assigned as:
	len = min_t(int, tx->skb->len + FCS_LEN,
			 tx->local->hw.wiphy->frag_threshold);
However, when frag_threshold is "-1", len is always "-1", which is
0xffffffff therefore rts is always set to true.

CC: stable@kernel.org
Signed-off-by: Shanyu Zhao <shanyu.zhao@intel.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>