mac80211: use fixed broadcast address
The netdev broadcast address cannot change from
all-ones so there's no need to use it; we can
instead hard-code it. Since we already have an
instance in tkip.c, which will be shared if it
is marked static const, doing this reduces text
size at no data/bss cost.
The real motivation for this is, of course, the
desire to get rid of almost all uses of netdevs
in mac80211 so that auditing their use becomes
easier.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 375cecc..3466e1f 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1683,21 +1683,25 @@
/* packet from other interface */
struct mesh_path *mppath;
int is_mesh_mcast = 1;
- char *mesh_da;
+ const u8 *mesh_da;
rcu_read_lock();
if (is_multicast_ether_addr(skb->data))
/* DA TA mSA AE:SA */
mesh_da = skb->data;
else {
+ static const u8 bcast[ETH_ALEN] =
+ { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+
mppath = mpp_path_lookup(skb->data, sdata);
if (mppath) {
/* RA TA mDA mSA AE:DA SA */
mesh_da = mppath->mpp;
is_mesh_mcast = 0;
- } else
+ } else {
/* DA TA mSA AE:SA */
- mesh_da = dev->broadcast;
+ mesh_da = bcast;
+ }
}
hdrlen = ieee80211_fill_mesh_addresses(&hdr, &fc,
mesh_da, dev->dev_addr);