net: bridge: mcast: prepare query reception for mcast router split

In preparation for the upcoming split of multicast router state into
their IPv4 and IPv6 variants and as the br_multicast_mark_router() will
be split for that remove the select querier wrapper and instead add
ip4 and ip6 variants for br_multicast_query_received().
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/bridge/br_multicast.c

@@ -2615,22 +2615,6 @@ static bool br_ip6_multicast_select_querier(struct net_bridge *br,
 }
 #endif
 
-static bool br_multicast_select_querier(struct net_bridge *br,
-					struct net_bridge_port *port,
-					struct br_ip *saddr)
-{
-	switch (saddr->proto) {
-	case htons(ETH_P_IP):
-		return br_ip4_multicast_select_querier(br, port, saddr->src.ip4);
-#if IS_ENABLED(CONFIG_IPV6)
-	case htons(ETH_P_IPV6):
-		return br_ip6_multicast_select_querier(br, port, &saddr->src.ip6);
-#endif
-	}
-
-	return false;
-}
-
 static void
 br_multicast_update_query_timer(struct net_bridge *br,
 				struct bridge_mcast_other_query *query,
@@ -2708,18 +2692,35 @@ static void br_multicast_mark_router(struct net_bridge *br,
 		  now + br->multicast_querier_interval);
 }
 
-static void br_multicast_query_received(struct net_bridge *br,
-					struct net_bridge_port *port,
-					struct bridge_mcast_other_query *query,
-					struct br_ip *saddr,
-					unsigned long max_delay)
+static void
+br_ip4_multicast_query_received(struct net_bridge *br,
+				struct net_bridge_port *port,
+				struct bridge_mcast_other_query *query,
+				struct br_ip *saddr,
+				unsigned long max_delay)
+{
+	if (!br_ip4_multicast_select_querier(br, port, saddr->src.ip4))
+		return;
+
+	br_multicast_update_query_timer(br, query, max_delay);
+	br_multicast_mark_router(br, port);
+}
+
+#if IS_ENABLED(CONFIG_IPV6)
+static void
+br_ip6_multicast_query_received(struct net_bridge *br,
+				struct net_bridge_port *port,
+				struct bridge_mcast_other_query *query,
+				struct br_ip *saddr,
+				unsigned long max_delay)
 {
-	if (!br_multicast_select_querier(br, port, saddr))
+	if (!br_ip6_multicast_select_querier(br, port, &saddr->src.ip6))
 		return;
 
 	br_multicast_update_query_timer(br, query, max_delay);
 	br_multicast_mark_router(br, port);
 }
+#endif
 
 static void br_ip4_multicast_query(struct net_bridge *br,
 				   struct net_bridge_port *port,
@@ -2768,8 +2769,8 @@ static void br_ip4_multicast_query(struct net_bridge *br,
 		saddr.proto = htons(ETH_P_IP);
 		saddr.src.ip4 = iph->saddr;
 
-		br_multicast_query_received(br, port, &br->ip4_other_query,
-					    &saddr, max_delay);
+		br_ip4_multicast_query_received(br, port, &br->ip4_other_query,
+						&saddr, max_delay);
 		goto out;
 	}
 
@@ -2856,8 +2857,8 @@ static int br_ip6_multicast_query(struct net_bridge *br,
 		saddr.proto = htons(ETH_P_IPV6);
 		saddr.src.ip6 = ipv6_hdr(skb)->saddr;
 
-		br_multicast_query_received(br, port, &br->ip6_other_query,
-					    &saddr, max_delay);
+		br_ip6_multicast_query_received(br, port, &br->ip6_other_query,
+						&saddr, max_delay);
 		goto out;
 	} else if (!group) {
 		goto out;