mac80211: Remove unused third address from mesh address extension header.

The Mesh Control header only includes 0, 1 or 2 addresses. If there is
one address, it should be interpreted as Address 4.  If there are 2,
they are interpreted as Addresses 5 and 6 (Address 4 being the 4th
address in the 802.11 header).

The address extension used to hold up to 3 addresses instead of the current 2.
I'm not sure which draft version changed this, but it is very unlikely that it
will change again given the state of the approval process of this draft.  See
section 7.1.3.6.3 in current draft (8.0).

Also, note that the extra address that I'm removing was not being used, so this
change has no effect on over-the-air frame formats.  But I thought I better
remove it before someone does start using it.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 890dd19c2eca..b99e230fe31c 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -187,8 +187,8 @@ struct mesh_rmc {
 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
                                   const u8 *da, const u8 *sa);
 int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
-                struct ieee80211_sub_if_data *sdata, char *addr4,
-                char *addr5, char *addr6);
+                struct ieee80211_sub_if_data *sdata, char *addr4or5,
+                char *addr6);
 int mesh_rmc_check(u8 *addr, struct ieee80211s_hdr *mesh_hdr,
                 struct ieee80211_sub_if_data *sdata);
 bool mesh_matches_local(struct ieee802_11_elems *ie,