package/kernel/mac80211/patches/309-mac80211-make-local-tx_headroom-a-multiple-of-4.patch

   1 From: Felix Fietkau <nbd@openwrt.org>
   2 Date: Thu, 30 Jul 2015 14:12:25 +0200
   3 Subject: [PATCH] mac80211: make local->tx_headroom a multiple of 4
   4
   5 This ensures that mac80211 generated management frames and beacons are
   6 aligned before being passed to the driver
   7
   8 Signed-off-by: Felix Fietkau <nbd@openwrt.org>
   9 ---
  10
  11 --- a/net/mac80211/main.c
  12 +++ b/net/mac80211/main.c
  13 @@ -1031,6 +1031,7 @@ int ieee80211_register_hw(struct ieee802
  14          */
  15         local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
  16                                    IEEE80211_TX_STATUS_HEADROOM);
  17 +       local->tx_headroom = ALIGN(local->tx_headroom, 4);
  18
  19         debugfs_hw_add(local);
  20