net: bridge: mcast: rename br_ip's u member to dst

Since now we have src in br_ip, u no longer makes sense so rename
it to dst. No functional changes.

v2: fix build with CONFIG_BATMAN_ADV_MCAST

CC: Marek Lindner <mareklindner@neomailbox.ch>
CC: Simon Wunderlich <sw@simonwunderlich.de>
CC: Antonio Quartulli <a@unstable.cc>
CC: Sven Eckelmann <sven@narfation.org>
CC: b.a.t.m.a.n@lists.open-mesh.org
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/if_bridge.h

@@ -25,7 +25,7 @@ struct br_ip {
 #if IS_ENABLED(CONFIG_IPV6)
 		struct in6_addr ip6;
 #endif
-	} u;
+	} dst;
 	__be16		proto;
 	__u16           vid;
 };

net/batman-adv/multicast.c

@@ -221,7 +221,7 @@ static u8 batadv_mcast_mla_rtr_flags_bridge_get(struct batadv_priv *bat_priv,
 		 * address here, only IPv6 ones
 		 */
 		if (br_ip_entry->addr.proto == htons(ETH_P_IPV6) &&
-		    ipv6_addr_is_ll_all_routers(&br_ip_entry->addr.u.ip6))
+		    ipv6_addr_is_ll_all_routers(&br_ip_entry->addr.dst.ip6))
 			flags &= ~BATADV_MCAST_WANT_NO_RTR6;
 
 		list_del(&br_ip_entry->list);
@@ -562,10 +562,10 @@ batadv_mcast_mla_softif_get(struct net_device *dev,
 static void batadv_mcast_mla_br_addr_cpy(char *dst, const struct br_ip *src)
 {
 	if (src->proto == htons(ETH_P_IP))
-		ip_eth_mc_map(src->u.ip4, dst);
+		ip_eth_mc_map(src->dst.ip4, dst);
 #if IS_ENABLED(CONFIG_IPV6)
 	else if (src->proto == htons(ETH_P_IPV6))
-		ipv6_eth_mc_map(&src->u.ip6, dst);
+		ipv6_eth_mc_map(&src->dst.ip6, dst);
 #endif
 	else
 		eth_zero_addr(dst);
@@ -609,11 +609,11 @@ static int batadv_mcast_mla_bridge_get(struct net_device *dev,
 				continue;
 
 			if (tvlv_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES &&
-			    ipv4_is_local_multicast(br_ip_entry->addr.u.ip4))
+			    ipv4_is_local_multicast(br_ip_entry->addr.dst.ip4))
 				continue;
 
 			if (!(tvlv_flags & BATADV_MCAST_WANT_NO_RTR4) &&
-			    !ipv4_is_local_multicast(br_ip_entry->addr.u.ip4))
+			    !ipv4_is_local_multicast(br_ip_entry->addr.dst.ip4))
 				continue;
 		}
 
@@ -623,11 +623,11 @@ static int batadv_mcast_mla_bridge_get(struct net_device *dev,
 				continue;
 
 			if (tvlv_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES &&
-			    ipv6_addr_is_ll_all_nodes(&br_ip_entry->addr.u.ip6))
+			    ipv6_addr_is_ll_all_nodes(&br_ip_entry->addr.dst.ip6))
 				continue;
 
 			if (!(tvlv_flags & BATADV_MCAST_WANT_NO_RTR6) &&
-			    IPV6_ADDR_MC_SCOPE(&br_ip_entry->addr.u.ip6) >
+			    IPV6_ADDR_MC_SCOPE(&br_ip_entry->addr.dst.ip6) >
 			    IPV6_ADDR_SCOPE_LINKLOCAL)
 				continue;
 		}

net/bridge/br_mdb.c

@@ -70,10 +70,10 @@ static void __mdb_entry_to_br_ip(struct br_mdb_entry *entry, struct br_ip *ip)
 	ip->vid = entry->vid;
 	ip->proto = entry->addr.proto;
 	if (ip->proto == htons(ETH_P_IP))
-		ip->u.ip4 = entry->addr.u.ip4;
+		ip->dst.ip4 = entry->addr.u.ip4;
 #if IS_ENABLED(CONFIG_IPV6)
 	else
-		ip->u.ip6 = entry->addr.u.ip6;
+		ip->dst.ip6 = entry->addr.u.ip6;
 #endif
 }
 
@@ -158,10 +158,10 @@ static int __mdb_fill_info(struct sk_buff *skb,
 	e.ifindex = ifindex;
 	e.vid = mp->addr.vid;
 	if (mp->addr.proto == htons(ETH_P_IP))
-		e.addr.u.ip4 = mp->addr.u.ip4;
+		e.addr.u.ip4 = mp->addr.dst.ip4;
 #if IS_ENABLED(CONFIG_IPV6)
 	if (mp->addr.proto == htons(ETH_P_IPV6))
-		e.addr.u.ip6 = mp->addr.u.ip6;
+		e.addr.u.ip6 = mp->addr.dst.ip6;
 #endif
 	e.addr.proto = mp->addr.proto;
 	nest_ent = nla_nest_start_noflag(skb,
@@ -474,10 +474,10 @@ static void br_mdb_switchdev_host_port(struct net_device *dev,
 	};
 
 	if (mp->addr.proto == htons(ETH_P_IP))
-		ip_eth_mc_map(mp->addr.u.ip4, mdb.addr);
+		ip_eth_mc_map(mp->addr.dst.ip4, mdb.addr);
 #if IS_ENABLED(CONFIG_IPV6)
 	else
-		ipv6_eth_mc_map(&mp->addr.u.ip6, mdb.addr);
+		ipv6_eth_mc_map(&mp->addr.dst.ip6, mdb.addr);
 #endif
 
 	mdb.obj.orig_dev = dev;
@@ -520,10 +520,10 @@ void br_mdb_notify(struct net_device *dev,
 
 	if (pg) {
 		if (mp->addr.proto == htons(ETH_P_IP))
-			ip_eth_mc_map(mp->addr.u.ip4, mdb.addr);
+			ip_eth_mc_map(mp->addr.dst.ip4, mdb.addr);
 #if IS_ENABLED(CONFIG_IPV6)
 		else
-			ipv6_eth_mc_map(&mp->addr.u.ip6, mdb.addr);
+			ipv6_eth_mc_map(&mp->addr.dst.ip6, mdb.addr);
 #endif
 		mdb.obj.orig_dev = pg->port->dev;
 		switch (type) {

net/bridge/br_multicast.c

@@ -86,7 +86,7 @@ static struct net_bridge_mdb_entry *br_mdb_ip4_get(struct net_bridge *br,
 	struct br_ip br_dst;
 
 	memset(&br_dst, 0, sizeof(br_dst));
-	br_dst.u.ip4 = dst;
+	br_dst.dst.ip4 = dst;
 	br_dst.proto = htons(ETH_P_IP);
 	br_dst.vid = vid;
 
@@ -101,7 +101,7 @@ static struct net_bridge_mdb_entry *br_mdb_ip6_get(struct net_bridge *br,
 	struct br_ip br_dst;
 
 	memset(&br_dst, 0, sizeof(br_dst));
-	br_dst.u.ip6 = *dst;
+	br_dst.dst.ip6 = *dst;
 	br_dst.proto = htons(ETH_P_IPV6);
 	br_dst.vid = vid;
 
@@ -126,11 +126,11 @@ struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
 
 	switch (skb->protocol) {
 	case htons(ETH_P_IP):
-		ip.u.ip4 = ip_hdr(skb)->daddr;
+		ip.dst.ip4 = ip_hdr(skb)->daddr;
 		break;
 #if IS_ENABLED(CONFIG_IPV6)
 	case htons(ETH_P_IPV6):
-		ip.u.ip6 = ipv6_hdr(skb)->daddr;
+		ip.dst.ip6 = ipv6_hdr(skb)->daddr;
 		break;
 #endif
 	default:
@@ -625,9 +625,9 @@ static struct sk_buff *br_multicast_alloc_query(struct net_bridge *br,
 
 	switch (group->proto) {
 	case htons(ETH_P_IP):
-		ip4_dst = ip_dst ? ip_dst->u.ip4 : htonl(INADDR_ALLHOSTS_GROUP);
+		ip4_dst = ip_dst ? ip_dst->dst.ip4 : htonl(INADDR_ALLHOSTS_GROUP);
 		return br_ip4_multicast_alloc_query(br, pg,
-						    ip4_dst, group->u.ip4,
+						    ip4_dst, group->dst.ip4,
 						    with_srcs, over_lmqt,
 						    sflag, igmp_type,
 						    need_rexmit);
@@ -636,13 +636,13 @@ static struct sk_buff *br_multicast_alloc_query(struct net_bridge *br,
 		struct in6_addr ip6_dst;
 
 		if (ip_dst)
-			ip6_dst = ip_dst->u.ip6;
+			ip6_dst = ip_dst->dst.ip6;
 		else
 			ipv6_addr_set(&ip6_dst, htonl(0xff020000), 0, 0,
 				      htonl(1));
 
 		return br_ip6_multicast_alloc_query(br, pg,
-						    &ip6_dst, &group->u.ip6,
+						    &ip6_dst, &group->dst.ip6,
 						    with_srcs, over_lmqt,
 						    sflag, igmp_type,
 						    need_rexmit);
@@ -906,7 +906,7 @@ static int br_ip4_multicast_add_group(struct net_bridge *br,
 		return 0;
 
 	memset(&br_group, 0, sizeof(br_group));
-	br_group.u.ip4 = group;
+	br_group.dst.ip4 = group;
 	br_group.proto = htons(ETH_P_IP);
 	br_group.vid = vid;
 	filter_mode = igmpv2 ? MCAST_EXCLUDE : MCAST_INCLUDE;
@@ -930,7 +930,7 @@ static int br_ip6_multicast_add_group(struct net_bridge *br,
 		return 0;
 
 	memset(&br_group, 0, sizeof(br_group));
-	br_group.u.ip6 = *group;
+	br_group.dst.ip6 = *group;
 	br_group.proto = htons(ETH_P_IPV6);
 	br_group.vid = vid;
 	filter_mode = mldv1 ? MCAST_EXCLUDE : MCAST_INCLUDE;
@@ -1079,7 +1079,7 @@ static void br_multicast_send_query(struct net_bridge *br,
 	    !br_opt_get(br, BROPT_MULTICAST_QUERIER))
 		return;
 
-	memset(&br_group.u, 0, sizeof(br_group.u));
+	memset(&br_group.dst, 0, sizeof(br_group.dst));
 
 	if (port ? (own_query == &port->ip4_own_query) :
 		   (own_query == &br->ip4_own_query)) {
@@ -2506,7 +2506,7 @@ static void br_ip4_multicast_leave_group(struct net_bridge *br,
 	own_query = port ? &port->ip4_own_query : &br->ip4_own_query;
 
 	memset(&br_group, 0, sizeof(br_group));
-	br_group.u.ip4 = group;
+	br_group.dst.ip4 = group;
 	br_group.proto = htons(ETH_P_IP);
 	br_group.vid = vid;
 
@@ -2530,7 +2530,7 @@ static void br_ip6_multicast_leave_group(struct net_bridge *br,
 	own_query = port ? &port->ip6_own_query : &br->ip6_own_query;
 
 	memset(&br_group, 0, sizeof(br_group));
-	br_group.u.ip6 = *group;
+	br_group.dst.ip6 = *group;
 	br_group.proto = htons(ETH_P_IPV6);
 	br_group.vid = vid;