net: bridge: remove _deliver functions and consolidate forward code

Before this patch we had two flavors of most forwarding functions -
_forward and _deliver, the difference being that the latter are used
when the packets are locally originated. Instead of all this function
pointer passing and code duplication, we can just pass a boolean noting
that the packet was locally originated and use that to perform the
necessary checks in __br_forward. This gives a minor performance
improvement but more importantly consolidates the forwarding paths.
Also add a kernel doc comment to explain the exported br_forward()'s
arguments.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 16 deletions

diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 4d6cdf459e57..b3088264f844 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -505,14 +505,12 @@ int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
 			      const unsigned char *addr, u16 vid);
 
 /* br_forward.c */
-void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb);
 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
-		bool local_rcv);
+		bool local_rcv, bool local_orig);
 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
-void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast);
-void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
-		      bool local_rcv, bool unicast);
+void br_flood(struct net_bridge *br, struct sk_buff *skb,
+	      bool unicast, bool local_rcv, bool local_orig);
 
 /* br_if.c */
 void br_port_carrier_check(struct net_bridge_port *p);
@@ -560,10 +558,8 @@ void br_multicast_init(struct net_bridge *br);
 void br_multicast_open(struct net_bridge *br);
 void br_multicast_stop(struct net_bridge *br);
 void br_multicast_dev_del(struct net_bridge *br);
-void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
-			  struct sk_buff *skb);
-void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
-			  struct sk_buff *skb, bool local_rcv);
+void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
+			struct sk_buff *skb, bool local_rcv, bool local_orig);
 int br_multicast_set_router(struct net_bridge *br, unsigned long val);
 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
 int br_multicast_toggle(struct net_bridge *br, unsigned long val);
@@ -691,28 +687,27 @@ static inline void br_multicast_dev_del(struct net_bridge *br)
 {
 }
 
-static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
-					struct sk_buff *skb)
+static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
+				      struct sk_buff *skb,
+				      bool local_rcv, bool local_orig)
 {
 }
 
-static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
-					struct sk_buff *skb,
-					bool local_rcv)
-{
-}
 static inline bool br_multicast_is_router(struct net_bridge *br)
 {
 	return 0;
 }
+
 static inline bool br_multicast_querier_exists(struct net_bridge *br,
 					       struct ethhdr *eth)
 {
 	return false;
 }
+
 static inline void br_mdb_init(void)
 {
 }
+
 static inline void br_mdb_uninit(void)
 {
 }