diff options
| author | Felix Fietkau <nbd@nbd.name> | 2016-05-19 17:34:38 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2016-05-31 12:14:04 +0200 |
| commit | 6fe04128f158c5ad27e7504bfdf1b12e63331bc9 (patch) | |
| tree | 294d109c5107cae1833804802886c829352f7149 | |
| parent | fe7a7c57629e8dcbc0e297363a9b2366d67a6dc5 (diff) | |
| download | linux-6fe04128f158c5ad27e7504bfdf1b12e63331bc9.tar.bz2 | |
mac80211: fix fast_tx header alignment
The header field is defined as u8[] but also accessed as struct
ieee80211_hdr. Enforce an alignment of 2 to prevent unnecessary
unaligned accesses, which can be very harmful for performance on many
platforms.
Fixes: e495c24731a2 ("mac80211: extend fast-xmit for more ciphers")
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| -rw-r--r-- | net/mac80211/sta_info.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index c8b8ccc370eb..78b0ef32dddd 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -280,7 +280,7 @@ struct ieee80211_fast_tx { u8 sa_offs, da_offs, pn_offs; u8 band; u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV + - sizeof(rfc1042_header)]; + sizeof(rfc1042_header)] __aligned(2); struct rcu_head rcu_head; }; |