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Commit a9a6bc70 authored by Nikolay Aleksandrov's avatar Nikolay Aleksandrov Committed by David S. Miller
Browse files

bridge: netlink: add support for multicast_router 



Add IFLA_BR_MCAST_ROUTER to allow setting and retrieving
br->multicast_router when igmp snooping is enabled.

Signed-off-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 150217c6

include/uapi/linux/if_link.h

+1 −0
Original line number Diff line number Diff line
@@ -245,6 +245,7 @@ enum { 
	IFLA_BR_GC_TIMER,

	IFLA_BR_GROUP_ADDR,

	IFLA_BR_FDB_FLUSH,

	IFLA_BR_MCAST_ROUTER,

	__IFLA_BR_MAX,

};

net/bridge/br_netlink.c

+19 −0
Original line number Diff line number Diff line
@@ -767,6 +767,7 @@ static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { 
	[IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },

	[IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,

				 .len  = ETH_ALEN },

	[IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },

};



static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
@@ -862,6 +863,16 @@ static int br_changelink(struct net_device *brdev, struct nlattr *tb[], 
	if (data[IFLA_BR_FDB_FLUSH])

		br_fdb_flush(br);



#ifdef CONFIG_BRIDGE_IGMP_SNOOPING

	if (data[IFLA_BR_MCAST_ROUTER]) {

		u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);



		err = br_multicast_set_router(br, multicast_router);

		if (err)

			return err;

	}

#endif



	return 0;

}
@@ -889,6 +900,9 @@ static size_t br_get_size(const struct net_device *brdev) 
	       nla_total_size(sizeof(u64)) +    /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */

	       nla_total_size(sizeof(u64)) +    /* IFLA_BR_GC_TIMER */

	       nla_total_size(ETH_ALEN) +       /* IFLA_BR_GROUP_ADDR */

#ifdef CONFIG_BRIDGE_IGMP_SNOOPING

	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_ROUTER */

#endif

	       0;

}
@@ -945,6 +959,11 @@ static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) 
		return -EMSGSIZE;

#endif



#ifdef CONFIG_BRIDGE_IGMP_SNOOPING

	if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router))

		return -EMSGSIZE;

#endif



	return 0;

}