openwrt-xburst/package/hostapd/patches/120-wds_ap.patch

--- a/hostapd/config.c
+++ b/hostapd/config.c
@@ -1526,6 +1526,8 @@ struct hostapd_config * hostapd_config_r
 					   line, pos);
 				errors++;
 			}
+		} else if (os_strcmp(buf, "wds_sta") == 0) {
+			bss->wds_sta = atoi(pos);
 		} else if (os_strcmp(buf, "ap_max_inactivity") == 0) {
 			bss->ap_max_inactivity = atoi(pos);
 		} else if (os_strcmp(buf, "country_code") == 0) {
--- a/hostapd/config.h
+++ b/hostapd/config.h
@@ -195,6 +195,7 @@ struct hostapd_bss_config {
 	int num_accept_mac;
 	struct mac_acl_entry *deny_mac;
 	int num_deny_mac;
+	int wds_sta;
 
 	int auth_algs; /* bitfield of allowed IEEE 802.11 authentication
 			* algorithms, WPA_AUTH_ALG_{OPEN,SHARED,LEAP} */
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -1127,6 +1127,7 @@ struct wpa_driver_ops {
 			 const char *ifname, const u8 *addr);
 	int (*set_sta_vlan)(void *priv, const u8 *addr, const char *ifname,
 			    int vlan_id);
+	int (*set_wds_sta)(void *priv, const u8 *addr, int aid, int val);
 	/**
 	 * commit - Optional commit changes handler
 	 * @priv: driver private data
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -2675,7 +2675,7 @@ static void nl80211_remove_iface(struct 
 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
 				     const char *ifname,
 				     enum nl80211_iftype iftype,
-				     const u8 *addr)
+				     const u8 *addr, int wds)
 {
 	struct nl_msg *msg, *flags = NULL;
 	int ifidx;
@@ -2706,6 +2706,8 @@ static int nl80211_create_iface_once(str
 
 		if (err)
 			goto nla_put_failure;
+	} else if (wds) {
+		NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
 	}
 
 	ret = send_and_recv_msgs(drv, msg, NULL, NULL);
@@ -2736,11 +2738,11 @@ static int nl80211_create_iface_once(str
 }
 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
 				const char *ifname, enum nl80211_iftype iftype,
-				const u8 *addr)
+				const u8 *addr, int wds)
 {
 	int ret;
 
-	ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
+	ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
 
 	/* if error occured and interface exists already */
 	if (ret == -ENFILE && if_nametoindex(ifname)) {
@@ -2750,7 +2752,7 @@ static int nl80211_create_iface(struct w
 		nl80211_remove_iface(drv, if_nametoindex(ifname));
 
 		/* Try to create the interface again */
-		ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
+		ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
 	}
 
 	return ret;
@@ -2975,7 +2977,7 @@ static struct sock_filter msock_filter_i
 
 #if 0
 	/*
-	 * drop non-data frames, WDS frames
+	 * drop non-data frames
 	 */
 	/* load the lower byte of the frame control field */
 	BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
@@ -2983,13 +2985,13 @@ static struct sock_filter msock_filter_i
 	BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
 	/* drop non-data frames */
 	BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
+#endif
 	/* load the upper byte of the frame control field */
-	BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
+	BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
 	/* mask off toDS/fromDS */
 	BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
-	/* drop WDS frames */
-	BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, FAIL, 0),
-#endif
+	/* accept WDS frames */
+	BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
 
 	/*
 	 * add header length to index
@@ -3095,7 +3097,7 @@ nl80211_create_monitor_interface(struct 
 	buf[IFNAMSIZ - 1] = '\0';
 
 	drv->monitor_ifidx =
-		nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
+		nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 0);
 
 	if (drv->monitor_ifidx < 0)
 		return -1;
@@ -4064,7 +4066,7 @@ static int i802_bss_add(void *priv, cons
 	if (bss == NULL)
 		return -1;
 
-	ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
+	ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid, 0);
 	if (ifidx < 0) {
 		os_free(bss);
 		return -1;
@@ -4162,7 +4164,7 @@ static int i802_if_add(const char *iface
 		       enum hostapd_driver_if_type type, char *ifname,
 		       const u8 *addr)
 {
-	if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
+	if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr, 0) < 0)
 		return -1;
 	return 0;
 }
@@ -4208,6 +4210,22 @@ static int i802_set_sta_vlan(void *priv,
 	return -ENOBUFS;
 }
 
+static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
+{
+	struct wpa_driver_nl80211_data *drv = priv;
+	char name[16];
+
+	sprintf(name, "%s.sta%d", drv->ifname, aid);
+	if (val) {
+		if (nl80211_create_iface(priv, name, NL80211_IFTYPE_AP_VLAN, NULL, 1) < 0)
+			return -1;
+		hostapd_set_iface_flags(drv, name, 1);
+		return i802_set_sta_vlan(priv, addr, name, 0);
+	} else {
+		i802_set_sta_vlan(priv, addr, drv->ifname, 0);
+		return i802_if_remove(priv, HOSTAPD_IF_VLAN, name, NULL);
+	}
+}
 
 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
 {
@@ -4424,5 +4442,6 @@ const struct wpa_driver_ops wpa_driver_n
 	.if_update = i802_if_update,
 	.if_remove = i802_if_remove,
 	.set_sta_vlan = i802_set_sta_vlan,
+	.set_wds_sta = i802_set_wds_sta,
 #endif /* HOSTAPD */
 };
--- a/hostapd/driver_i.h
+++ b/hostapd/driver_i.h
@@ -446,6 +446,14 @@ hostapd_set_sta_vlan(const char *ifname,
 }
 
 static inline int
+hostapd_set_wds_sta(struct hostapd_data *hapd, const u8 *addr, int aid, int val)
+{
+	if (hapd->driver == NULL || hapd->driver->set_wds_sta == NULL)
+		return 0;
+	return hapd->driver->set_wds_sta(hapd->drv_priv, addr, aid, val);
+}
+
+static inline int
 hostapd_driver_commit(struct hostapd_data *hapd)
 {
 	if (hapd->driver == NULL || hapd->driver->commit == NULL)
--- a/hostapd/drv_callbacks.c
+++ b/hostapd/drv_callbacks.c
@@ -167,6 +167,7 @@ static const u8 * get_hdr_bssid(const st
 		if (len < 24)
 			return NULL;
 		switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
+		case WLAN_FC_FROMDS|WLAN_FC_TODS:
 		case WLAN_FC_TODS:
 			return hdr->addr1;
 		case WLAN_FC_FROMDS:
@@ -213,6 +214,7 @@ void hostapd_rx_from_unknown_sta(struct 
 {
 	struct sta_info *sta;
 	const u8 *addr;
+	u16 fc = le_to_host16(hdr->frame_control);
 
 	hapd = get_hapd_bssid(hapd->iface, get_hdr_bssid(hdr, len));
 	if (hapd == NULL || hapd == HAPD_BROADCAST)
@@ -231,6 +233,14 @@ void hostapd_rx_from_unknown_sta(struct 
 			hostapd_sta_deauth(
 				hapd, addr,
 				WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
+	} else {
+		if (!sta->wds_sta) {
+			if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
+			    (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
+				sta->wds_sta = 1;
+				hostapd_set_wds_sta(hapd, addr, sta->aid, 1);
+			}
+		}
 	}
 }
 
--- a/hostapd/sta_info.c
+++ b/hostapd/sta_info.c
@@ -120,6 +120,7 @@ void ap_free_sta(struct hostapd_data *ha
 
 	accounting_sta_stop(hapd, sta);
 
+	hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 0);
 	if (!ap_sta_in_other_bss(hapd, sta, WLAN_STA_ASSOC) &&
 	    !(sta->flags & WLAN_STA_PREAUTH))
 		hostapd_sta_remove(hapd, sta->addr);
--- a/hostapd/sta_info.h
+++ b/hostapd/sta_info.h
@@ -78,6 +78,7 @@ struct sta_info {
 	struct hostapd_ssid *ssid_probe; /* SSID selection based on ProbeReq */
 
 	int vlan_id;
+	int wds_sta;
 
 #ifdef CONFIG_IEEE80211N
 	struct ht_cap_ie ht_capabilities; /* IEEE 802.11n capabilities */
--- a/src/common/nl80211_copy.h
+++ b/src/common/nl80211_copy.h
@@ -584,6 +584,8 @@ enum nl80211_commands {
  *	changed then the list changed and the dump should be repeated
  *	completely from scratch.
  *
+ * @NL80211_ATTR_4ADDR: Use 4-address frames on a virtual interface
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -714,6 +716,8 @@ enum nl80211_attrs {
 
 	NL80211_ATTR_PID,
 
+	NL80211_ATTR_4ADDR,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,