tree e3344aa83dd198f5237a356f779940a62869aad8
parent f55ec6a8d856ffbd53e7424207e722c3c3eb5c2d
author Felix Fietkau <nbd@nbd.name> 1518265234 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1527659428 +0200

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>