nl80211: Extend bridge add/del operations for secondary BSSes

Previously, only the main interface was added to a bridge. Extend this
to apply to all configured BSSes.

src/ap/ap_drv_ops.c

@@ -281,7 +281,7 @@ int hostapd_vlan_if_add(struct hostapd_data *hapd, const char *ifname)
 	char force_ifname[IFNAMSIZ];
 	u8 if_addr[ETH_ALEN];
 	return hostapd_if_add(hapd, WPA_IF_AP_VLAN, ifname, hapd->own_addr,
-			      NULL, NULL, force_ifname, if_addr);
+			      NULL, NULL, force_ifname, if_addr, NULL);
 }
 
 
@@ -367,12 +367,14 @@ int hostapd_set_ssid(struct hostapd_data *hapd, const u8 *buf, size_t len)
 
 int hostapd_if_add(struct hostapd_data *hapd, enum wpa_driver_if_type type,
 		   const char *ifname, const u8 *addr, void *bss_ctx,
-		   void **drv_priv, char *force_ifname, u8 *if_addr)
+		   void **drv_priv, char *force_ifname, u8 *if_addr,
+		   const char *bridge)
 {
 	if (hapd->driver == NULL || hapd->driver->if_add == NULL)
 		return -1;
 	return hapd->driver->if_add(hapd->drv_priv, type, ifname, addr,
-				    bss_ctx, drv_priv, force_ifname, if_addr);
+				    bss_ctx, drv_priv, force_ifname, if_addr,
+				    bridge);
 }
 
 

src/ap/ap_drv_ops.h

@@ -43,7 +43,8 @@ int hostapd_get_ssid(struct hostapd_data *hapd, u8 *buf, size_t len);
 int hostapd_set_ssid(struct hostapd_data *hapd, const u8 *buf, size_t len);
 int hostapd_if_add(struct hostapd_data *hapd, enum wpa_driver_if_type type,
 		   const char *ifname, const u8 *addr, void *bss_ctx,
-		   void **drv_priv, char *force_ifname, u8 *if_addr);
+		   void **drv_priv, char *force_ifname, u8 *if_addr,
+		   const char *bridge);
 int hostapd_if_remove(struct hostapd_data *hapd, enum wpa_driver_if_type type,
 		      const char *ifname);
 int hostapd_set_ieee8021x(struct hostapd_data *hapd,

src/ap/hostapd.c

@@ -510,7 +510,9 @@ static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
 		hapd->interface_added = 1;
 		if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
 				   hapd->conf->iface, hapd->own_addr, hapd,
-				   &hapd->drv_priv, force_ifname, if_addr)) {
+				   &hapd->drv_priv, force_ifname, if_addr,
+				   hapd->conf->bridge[0] ? hapd->conf->bridge :
+				   NULL)) {
 			wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
 				   MACSTR ")", MAC2STR(hapd->own_addr));
 			return -1;

src/drivers/driver.h

@@ -1604,11 +1604,13 @@ struct wpa_driver_ops {
 	 * @if_addr: Buffer for returning the allocated interface address
 	 *	(this may differ from the requested addr if the driver cannot
 	 *	change interface address)
+	 * @bridge: Bridge interface to use or %NULL if no bridge configured
 	 * Returns: 0 on success, -1 on failure
 	 */
 	int (*if_add)(void *priv, enum wpa_driver_if_type type,
 		      const char *ifname, const u8 *addr, void *bss_ctx,
-		      void **drv_priv, char *force_ifname, u8 *if_addr);
+		      void **drv_priv, char *force_ifname, u8 *if_addr,
+		      const char *bridge);
 
 	/**
 	 * if_remove - Remove a virtual interface

src/drivers/driver_nl80211.c

@@ -112,7 +112,10 @@ struct i802_bss {
 	struct i802_bss *next;
 	int ifindex;
 	char ifname[IFNAMSIZ + 1];
+	char brname[IFNAMSIZ];
 	unsigned int beacon_set:1;
+	unsigned int added_if_into_bridge:1;
+	unsigned int added_bridge:1;
 };
 
 struct wpa_driver_nl80211_data {
@@ -123,7 +126,6 @@ struct wpa_driver_nl80211_data {
 	void *ctx;
 	struct netlink_data *netlink;
 	int ioctl_sock; /* socket for ioctl() use */
-	char brname[IFNAMSIZ];
 	int ifindex;
 	int if_removed;
 	int if_disabled;
@@ -158,8 +160,6 @@ struct wpa_driver_nl80211_data {
 	int disable_11b_rates;
 
 	unsigned int pending_remain_on_chan:1;
-	unsigned int added_bridge:1;
-	unsigned int added_if_into_bridge:1;
 
 	u64 remain_on_chan_cookie;
 	u64 send_action_cookie;
@@ -2069,18 +2069,18 @@ static void wpa_driver_nl80211_deinit(void *priv)
 
 	if (drv->nl_handle_preq)
 		wpa_driver_nl80211_probe_req_report(bss, 0);
-	if (drv->added_if_into_bridge) {
-		if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
+	if (bss->added_if_into_bridge) {
+		if (linux_br_del_if(drv->ioctl_sock, bss->brname, bss->ifname)
 		    < 0)
 			wpa_printf(MSG_INFO, "nl80211: Failed to remove "
 				   "interface %s from bridge %s: %s",
-				   bss->ifname, drv->brname, strerror(errno));
+				   bss->ifname, bss->brname, strerror(errno));
 	}
-	if (drv->added_bridge) {
-		if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
+	if (bss->added_bridge) {
+		if (linux_br_del(drv->ioctl_sock, bss->brname) < 0)
 			wpa_printf(MSG_INFO, "nl80211: Failed to remove "
 				   "bridge %s: %s",
-				   drv->brname, strerror(errno));
+				   bss->brname, strerror(errno));
 	}
 
 	nl80211_remove_monitor_interface(drv);
@@ -5518,12 +5518,13 @@ static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 
 
 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
+			     struct i802_bss *bss,
 			     const char *brname, const char *ifname)
 {
 	int ifindex;
 	char in_br[IFNAMSIZ];
 
-	os_strlcpy(drv->brname, brname, IFNAMSIZ);
+	os_strlcpy(bss->brname, brname, IFNAMSIZ);
 	ifindex = if_nametoindex(brname);
 	if (ifindex == 0) {
 		/*
@@ -5536,7 +5537,7 @@ static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
 				   brname, strerror(errno));
 			return -1;
 		}
-		drv->added_bridge = 1;
+		bss->added_bridge = 1;
 		add_ifidx(drv, if_nametoindex(brname));
 	}
 
@@ -5563,7 +5564,7 @@ static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
 			   ifname, brname, strerror(errno));
 		return -1;
 	}
-	drv->added_if_into_bridge = 1;
+	bss->added_if_into_bridge = 1;
 
 	return 0;
 }
@@ -5628,7 +5629,7 @@ static void *i802_init(struct hostapd_data *hapd,
 	}
 
 	if (params->num_bridge && params->bridge[0] &&
-	    i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
+	    i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
 		goto failed;
 
 	if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
@@ -5741,7 +5742,8 @@ static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
 				     const char *ifname, const u8 *addr,
 				     void *bss_ctx, void **drv_priv,
-				     char *force_ifname, u8 *if_addr)
+				     char *force_ifname, u8 *if_addr,
+				     const char *bridge)
 {
 	struct i802_bss *bss = priv;
 	struct wpa_driver_nl80211_data *drv = bss->drv;
@@ -5806,6 +5808,15 @@ static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
 #endif /* CONFIG_P2P */
 
 #ifdef HOSTAPD
+	if (bridge &&
+	    i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
+		wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
+			   "interface %s to a bridge %s", ifname, bridge);
+		nl80211_remove_iface(drv, ifidx);
+		os_free(new_bss);
+		return -1;
+	}
+
 	if (type == WPA_IF_AP_BSS) {
 		if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
 			nl80211_remove_iface(drv, ifidx);
@@ -5838,6 +5849,23 @@ static int wpa_driver_nl80211_if_remove(void *priv,
 		   __func__, type, ifname, ifindex);
 	if (ifindex <= 0)
 		return -1;
+
+#ifdef HOSTAPD
+	if (bss->added_if_into_bridge) {
+		if (linux_br_del_if(drv->ioctl_sock, bss->brname, bss->ifname)
+		    < 0)
+			wpa_printf(MSG_INFO, "nl80211: Failed to remove "
+				   "interface %s from bridge %s: %s",
+				   bss->ifname, bss->brname, strerror(errno));
+	}
+	if (bss->added_bridge) {
+		if (linux_br_del(drv->ioctl_sock, bss->brname) < 0)
+			wpa_printf(MSG_INFO, "nl80211: Failed to remove "
+				   "bridge %s: %s",
+				   bss->brname, strerror(errno));
+	}
+#endif /* HOSTAPD */
+
 	nl80211_remove_iface(drv, ifindex);
 
 #ifdef HOSTAPD

src/drivers/driver_test.c

@@ -1064,7 +1064,8 @@ static int test_driver_bss_remove(void *priv, const char *ifname)
 static int test_driver_if_add(void *priv, enum wpa_driver_if_type type,
 			      const char *ifname, const u8 *addr,
 			      void *bss_ctx, void **drv_priv,
-			      char *force_ifname, u8 *if_addr)
+			      char *force_ifname, u8 *if_addr,
+			      const char *bridge)
 {
 	struct test_driver_bss *dbss = priv;
 	struct wpa_driver_test_data *drv = dbss->drv;

wpa_supplicant/driver_i.h

@@ -413,12 +413,12 @@ static inline int wpa_drv_if_add(struct wpa_supplicant *wpa_s,
 				 enum wpa_driver_if_type type,
 				 const char *ifname, const u8 *addr,
 				 void *bss_ctx, char *force_ifname,
-				 u8 *if_addr)
+				 u8 *if_addr, const char *bridge)
 {
 	if (wpa_s->driver->if_add)
 		return wpa_s->driver->if_add(wpa_s->drv_priv, type, ifname,
 					     addr, bss_ctx, NULL, force_ifname,
-					     if_addr);
+					     if_addr, bridge);
 	return -1;
 }
 

wpa_supplicant/p2p_supplicant.c

@@ -973,7 +973,7 @@ static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 
 	wpa_s->pending_interface_type = type;
 	if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
-			   wpa_s->pending_interface_addr) < 0) {
+			   wpa_s->pending_interface_addr, NULL) < 0) {
 		wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
 			   "interface");
 		return -1;