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Commit 5b9d6b15 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by David S. Miller
Browse files

bridge: move maybe_deliver_addr() inside #ifdef 



The only caller of this new function is inside of an #ifdef checking
for CONFIG_BRIDGE_IGMP_SNOOPING, so we should move the implementation
there too, in order to avoid this harmless warning:

net/bridge/br_forward.c:177:13: error: 'maybe_deliver_addr' defined but not used [-Werror=unused-function]

Fixes: 6db6f0ea ("bridge: multicast to unicast")
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Acked-by: default avatarStephen Hemminger <stephen@networkplumber.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0901df3a

net/bridge/br_forward.c

+25 −25
Original line number Diff line number Diff line
@@ -174,31 +174,6 @@ static struct net_bridge_port *maybe_deliver( 
	return p;

}



static void maybe_deliver_addr(struct net_bridge_port *p, struct sk_buff *skb,

			       const unsigned char *addr, bool local_orig)

{

	struct net_device *dev = BR_INPUT_SKB_CB(skb)->brdev;

	const unsigned char *src = eth_hdr(skb)->h_source;



	if (!should_deliver(p, skb))

		return;



	/* Even with hairpin, no soliloquies - prevent breaking IPv6 DAD */

	if (skb->dev == p->dev && ether_addr_equal(src, addr))

		return;



	skb = skb_copy(skb, GFP_ATOMIC);

	if (!skb) {

		dev->stats.tx_dropped++;

		return;

	}



	if (!is_broadcast_ether_addr(addr))

		memcpy(eth_hdr(skb)->h_dest, addr, ETH_ALEN);



	__br_forward(p, skb, local_orig);

}



/* called under rcu_read_lock */

void br_flood(struct net_bridge *br, struct sk_buff *skb,

	      enum br_pkt_type pkt_type, bool local_rcv, bool local_orig)
@@ -245,6 +220,31 @@ void br_flood(struct net_bridge *br, struct sk_buff *skb, 
}



#ifdef CONFIG_BRIDGE_IGMP_SNOOPING

static void maybe_deliver_addr(struct net_bridge_port *p, struct sk_buff *skb,

			       const unsigned char *addr, bool local_orig)

{

	struct net_device *dev = BR_INPUT_SKB_CB(skb)->brdev;

	const unsigned char *src = eth_hdr(skb)->h_source;



	if (!should_deliver(p, skb))

		return;



	/* Even with hairpin, no soliloquies - prevent breaking IPv6 DAD */

	if (skb->dev == p->dev && ether_addr_equal(src, addr))

		return;



	skb = skb_copy(skb, GFP_ATOMIC);

	if (!skb) {

		dev->stats.tx_dropped++;

		return;

	}



	if (!is_broadcast_ether_addr(addr))

		memcpy(eth_hdr(skb)->h_dest, addr, ETH_ALEN);



	__br_forward(p, skb, local_orig);

}



/* called with rcu_read_lock */

void br_multicast_flood(struct net_bridge_mdb_entry *mdst,

			struct sk_buff *skb,