[Bridge] [net-next v4 04/11] net: bridge: mcast: prepare query reception for mcast router split

[Linus Lüssing]

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.luess...@c0d3.blue>
---
 net/bridge/br_multicast.c | 53 ++++++++++++++++++++-------------------
 1 file changed, 27 insertions(+), 26 deletions(-)

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 6fe93a3..7edbbc9 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -2615,22 +2615,6 @@ update:
 }
 #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,
@@ -2708,19 +2692,36 @@ 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_multicast_select_querier(br, port, saddr))
+       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_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,
                                   struct sk_buff *skb,
@@ -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;
-- 
2.31.0