Commit e77b0c84 authored by Nikolay Aleksandrov's avatar Nikolay Aleksandrov Committed by David S. Miller
Browse files

net: bridge: mdb: dump host-joined entries as well 



Currently we dump only the port mdb entries but we can have host-joined
entries on the bridge itself and they should be treated as normal temp
mdbs, they're already notified:
$ bridge monitor all
[MDB]dev br0 port br0 grp ff02::8 temp

The group will not be shown in the bridge mdb output, but it takes 1 slot
and it's timing out. If it's only host-joined then the mdb show output
can even be empty.

After this patch we show the host-joined groups:
$ bridge mdb show
dev br0 port br0 grp ff02::8 temp

Signed-off-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6545916e

net/bridge/br_mdb.c

+31 −10
Original line number Diff line number Diff line
@@ -78,22 +78,35 @@ static void __mdb_entry_to_br_ip(struct br_mdb_entry *entry, struct br_ip *ip) 
}



static int __mdb_fill_info(struct sk_buff *skb,

			   struct net_bridge_mdb_entry *mp,

			   struct net_bridge_port_group *p)

{

	struct timer_list *mtimer;

	struct nlattr *nest_ent;

	struct br_mdb_entry e;

	u8 flags = 0;

	int ifindex;



	memset(&e, 0, sizeof(e));

	__mdb_entry_fill_flags(&e, p->flags);

	e.ifindex = p->port->dev->ifindex;

	e.vid = p->addr.vid;

	if (p->addr.proto == htons(ETH_P_IP))

		e.addr.u.ip4 = p->addr.u.ip4;

	if (p) {

		ifindex = p->port->dev->ifindex;

		mtimer = &p->timer;

		flags = p->flags;

	} else {

		ifindex = mp->br->dev->ifindex;

		mtimer = &mp->timer;

	}



	__mdb_entry_fill_flags(&e, flags);

	e.ifindex = ifindex;

	e.vid = mp->addr.vid;

	if (mp->addr.proto == htons(ETH_P_IP))

		e.addr.u.ip4 = mp->addr.u.ip4;

#if IS_ENABLED(CONFIG_IPV6)

	if (p->addr.proto == htons(ETH_P_IPV6))

		e.addr.u.ip6 = p->addr.u.ip6;

	if (mp->addr.proto == htons(ETH_P_IPV6))

		e.addr.u.ip6 = mp->addr.u.ip6;

#endif

	e.addr.proto = p->addr.proto;

	e.addr.proto = mp->addr.proto;

	nest_ent = nla_nest_start_noflag(skb,

					 MDBA_MDB_ENTRY_INFO);

	if (!nest_ent)
@@ -102,7 +115,7 @@ static int __mdb_fill_info(struct sk_buff *skb, 
	if (nla_put_nohdr(skb, sizeof(e), &e) ||

	    nla_put_u32(skb,

			MDBA_MDB_EATTR_TIMER,

			br_timer_value(&p->timer))) {

			br_timer_value(mtimer))) {

		nla_nest_cancel(skb, nest_ent);

		return -EMSGSIZE;

	}
@@ -139,12 +152,20 @@ static int br_mdb_fill_info(struct sk_buff *skb, struct netlink_callback *cb, 
			break;

		}



		if (mp->host_joined) {

			err = __mdb_fill_info(skb, mp, NULL);

			if (err) {

				nla_nest_cancel(skb, nest2);

				break;

			}

		}



		for (pp = &mp->ports; (p = rcu_dereference(*pp)) != NULL;

		      pp = &p->next) {

			if (!p->port)

				continue;



			err = __mdb_fill_info(skb, p);

			err = __mdb_fill_info(skb, mp, p);

			if (err) {

				nla_nest_cancel(skb, nest2);

				goto out;

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