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authorAmerigo Wang <amwang@redhat.com>2012-12-14 22:09:51 +0000
committerDavid S. Miller <davem@davemloft.net>2012-12-15 17:14:39 -0800
commitccb1c31a7a8744cd153a7d92b726a56b56ad61d3 (patch)
tree1c62ac2565c657155474b3e8335a13ebcc35560e /net/bridge
parent9dd9ff99532d7a7f8222fd1f0d410d91c0f15ac5 (diff)
downloadlinux-ccb1c31a7a8744cd153a7d92b726a56b56ad61d3.tar.bz2
bridge: add flags to distinguish permanent mdb entires
This patch adds a flag to each mdb entry, so that we can distinguish permanent entries with temporary entries. Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Stephen Hemminger <shemminger@vyatta.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_mdb.c9
-rw-r--r--net/bridge/br_multicast.c8
-rw-r--r--net/bridge/br_private.h4
3 files changed, 14 insertions, 7 deletions
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 6f0a2eebcb27..9cf5d2b28c76 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -83,6 +83,7 @@ static int br_mdb_fill_info(struct sk_buff *skb, struct netlink_callback *cb,
if (port) {
struct br_mdb_entry e;
e.ifindex = port->dev->ifindex;
+ e.state = p->state;
e.addr.u.ip4 = p->addr.u.ip4;
#if IS_ENABLED(CONFIG_IPV6)
e.addr.u.ip6 = p->addr.u.ip6;
@@ -253,6 +254,8 @@ static bool is_valid_mdb_entry(struct br_mdb_entry *entry)
#endif
} else
return false;
+ if (entry->state != MDB_PERMANENT && entry->state != MDB_TEMPORARY)
+ return false;
return true;
}
@@ -310,7 +313,7 @@ static int br_mdb_parse(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
- struct br_ip *group)
+ struct br_ip *group, unsigned char state)
{
struct net_bridge_mdb_entry *mp;
struct net_bridge_port_group *p;
@@ -336,7 +339,7 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
break;
}
- p = br_multicast_new_port_group(port, group, *pp);
+ p = br_multicast_new_port_group(port, group, *pp, state);
if (unlikely(!p))
return -ENOMEM;
rcu_assign_pointer(*pp, p);
@@ -373,7 +376,7 @@ static int __br_mdb_add(struct net *net, struct net_bridge *br,
#endif
spin_lock_bh(&br->multicast_lock);
- ret = br_mdb_add_group(br, p, &ip);
+ ret = br_mdb_add_group(br, p, &ip, entry->state);
spin_unlock_bh(&br->multicast_lock);
return ret;
}
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 2561af9d18a2..dce9defae3c6 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -279,7 +279,7 @@ static void br_multicast_port_group_expired(unsigned long data)
spin_lock(&br->multicast_lock);
if (!netif_running(br->dev) || timer_pending(&pg->timer) ||
- hlist_unhashed(&pg->mglist))
+ hlist_unhashed(&pg->mglist) || pg->state & MDB_PERMANENT)
goto out;
br_multicast_del_pg(br, pg);
@@ -622,7 +622,8 @@ out:
struct net_bridge_port_group *br_multicast_new_port_group(
struct net_bridge_port *port,
struct br_ip *group,
- struct net_bridge_port_group __rcu *next)
+ struct net_bridge_port_group __rcu *next,
+ unsigned char state)
{
struct net_bridge_port_group *p;
@@ -632,6 +633,7 @@ struct net_bridge_port_group *br_multicast_new_port_group(
p->addr = *group;
p->port = port;
+ p->state = state;
rcu_assign_pointer(p->next, next);
hlist_add_head(&p->mglist, &port->mglist);
setup_timer(&p->timer, br_multicast_port_group_expired,
@@ -674,7 +676,7 @@ static int br_multicast_add_group(struct net_bridge *br,
break;
}
- p = br_multicast_new_port_group(port, group, *pp);
+ p = br_multicast_new_port_group(port, group, *pp, MDB_TEMPORARY);
if (unlikely(!p))
goto err;
rcu_assign_pointer(*pp, p);
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index f21a739a6186..49b85af44016 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -83,6 +83,7 @@ struct net_bridge_port_group {
struct rcu_head rcu;
struct timer_list timer;
struct br_ip addr;
+ unsigned char state;
};
struct net_bridge_mdb_entry
@@ -443,7 +444,8 @@ extern void br_multicast_free_pg(struct rcu_head *head);
extern struct net_bridge_port_group *br_multicast_new_port_group(
struct net_bridge_port *port,
struct br_ip *group,
- struct net_bridge_port_group *next);
+ struct net_bridge_port_group *next,
+ unsigned char state);
extern void br_mdb_init(void);
extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
struct br_ip *group, int type);