summaryrefslogtreecommitdiff
path: root/include/net
diff options
context:
space:
mode:
authorFelix Fietkau <nbd@nbd.name>2018-02-10 13:20:34 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-05-30 07:50:28 +0200
commit5f3c6add07622e31a1f2acf259d8482cb1765792 (patch)
treee3344aa83dd198f5237a356f779940a62869aad8 /include/net
parentf55ec6a8d856ffbd53e7424207e722c3c3eb5c2d (diff)
mac80211: round IEEE80211_TX_STATUS_HEADROOM up to multiple of 4
[ Upstream commit 651b9920d7a694ffb1f885aef2bbb068a25d9d66 ] This ensures that mac80211 allocated management frames are properly aligned, which makes copying them more efficient. For instance, mt76 uses iowrite32_copy to copy beacon frames to beacon template memory on the chip. Misaligned 32-bit accesses cause CPU exceptions on MIPS and should be avoided. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/mac80211.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 8fd61bc50383..920a771c710f 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -4091,7 +4091,7 @@ void ieee80211_sta_uapsd_trigger(struct ieee80211_sta *sta, u8 tid);
* The TX headroom reserved by mac80211 for its own tx_status functions.
* This is enough for the radiotap header.
*/
-#define IEEE80211_TX_STATUS_HEADROOM 14
+#define IEEE80211_TX_STATUS_HEADROOM ALIGN(14, 4)
/**
* ieee80211_sta_set_buffered - inform mac80211 about driver-buffered frames