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authorFelix Fietkau <nbd@openwrt.org>2009-11-10 14:10:05 -0500
committerJohn W. Linville <linville@tuxdriver.com>2009-11-11 17:02:10 -0500
commitf14543ee4d0681df1377b976cba704557ba220d3 (patch)
treef148485869f6638030207c069742c1918647be6a /net/wireless
parent8b787643ca0a5130c647109d77fe512f89cfa611 (diff)
mac80211: implement support for 4-address frames for AP and client mode
In some situations it might be useful to run a network with an Access Point and multiple clients, but with each client bridged to a network behind it. For this to work, both the client and the AP need to transmit 4-address frames, containing both source and destination MAC addresses. With this patch, you can configure a client to communicate using only 4-address frames for data traffic. On the AP side you can enable 4-address frames for individual clients by isolating them in separate AP VLANs which are configured in 4-address mode. Such an AP VLAN will be limited to one client only, and this client will be used as the destination for all traffic on its interface, regardless of the destination MAC address in the packet headers. The advantage of this mode compared to regular WDS mode is that it's easier to configure and does not require a static list of peer MAC addresses on any side. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/util.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 3fc2df86278f..5aa39f7cf9b9 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -320,7 +320,9 @@ int ieee80211_data_to_8023(struct sk_buff *skb, u8 *addr,
320 break; 320 break;
321 case cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS): 321 case cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
322 if (unlikely(iftype != NL80211_IFTYPE_WDS && 322 if (unlikely(iftype != NL80211_IFTYPE_WDS &&
323 iftype != NL80211_IFTYPE_MESH_POINT)) 323 iftype != NL80211_IFTYPE_MESH_POINT &&
324 iftype != NL80211_IFTYPE_AP_VLAN &&
325 iftype != NL80211_IFTYPE_STATION))
324 return -1; 326 return -1;
325 if (iftype == NL80211_IFTYPE_MESH_POINT) { 327 if (iftype == NL80211_IFTYPE_MESH_POINT) {
326 struct ieee80211s_hdr *meshdr = 328 struct ieee80211s_hdr *meshdr =