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(parent: ce162bf) | patch
mac80211: round IEEE80211_TX_STATUS_HEADROOM up to multiple of 4
authorFelix Fietkau <nbd@nbd.name>
Sat, 10 Feb 2018 12:20:34 +0000 (13:20 +0100)
committerJohannes Berg <johannes.berg@intel.com>
Mon, 19 Feb 2018 12:13:36 +0000 (13:13 +0100)
commit651b9920d7a694ffb1f885aef2bbb068a25d9d66
treef8ec4100dcb78aaf2345114e3c39c65737702b1atree | snapshot
parentce162bfbc0b601841886965baba14877127c7c7ccommit | diff
mac80211: round IEEE80211_TX_STATUS_HEADROOM up to multiple of 4

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>
include/net/mac80211.h diff | blob | history
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