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@xxxxxxxxxxxxxxx
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
---
net/mac80211/sta_info.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 62193f4..ba7ce53 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -275,7 +275,7 @@ 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;
};
--
2.2.2
--
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