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bridge: vlan: flush the dynamically learned entries on port vlan delete

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Add a new argument to br_fdb_delete_by_port which allows to specify a
vid to match when flushing entries and use it in nbp_vlan_delete() to
flush the dynamically learned entries of the vlan/port pair when removing
a vlan from a port. Before this patch only the local mac was being
removed and the dynamically learned ones were left to expire.
Note that the do_all argument is still respected and if specified, the
vid will be ignored.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov 2015-06-23 05:28:16 -07:00 • committed by David S. Miller
parent 9aa6638216
commit 1ea2d020ba
6 changed files with 11 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
net/bridge/br_fdb.c
View file

@ -330,9 +330,11 @@ void br_fdb_flush(struct net_bridge *br)
/* Flush all entries referring to a specific port.
* if do_all is set also flush static entries
* if vid is set delete all entries that match the vlan_id
*/
void br_fdb_delete_by_port(struct net_bridge *br,
const struct net_bridge_port *p,
u16 vid,
int do_all)
{
int i;
@ -347,8 +349,9 @@ void br_fdb_delete_by_port(struct net_bridge *br,
if (f->dst != p)
continue;
if (f->is_static && !do_all)
continue;
if (!do_all)
if (f->is_static || (vid && f->vlan_id != vid))
continue;
if (f->is_local)
fdb_delete_local(br, p, f);

4
net/bridge/br_if.c
View file

@ -249,7 +249,7 @@ static void del_nbp(struct net_bridge_port *p)
list_del_rcu(&p->list);
nbp_vlan_flush(p);
br_fdb_delete_by_port(br, p, 1);
br_fdb_delete_by_port(br, p, 0, 1);
nbp_update_port_count(br);
netdev_upper_dev_unlink(dev, br->dev);
@ -278,7 +278,7 @@ void br_dev_delete(struct net_device *dev, struct list_head *head)
del_nbp(p);
}
br_fdb_delete_by_port(br, NULL, 1);
br_fdb_delete_by_port(br, NULL, 0, 1);
br_vlan_flush(br);
del_timer_sync(&br->gc_timer);

2
net/bridge/br_private.h
View file

@ -387,7 +387,7 @@ void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
void br_fdb_cleanup(unsigned long arg);
void br_fdb_delete_by_port(struct net_bridge *br,
const struct net_bridge_port *p, int do_all);
const struct net_bridge_port *p, u16 vid, int do_all);
struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
const unsigned char *addr, __u16 vid);
int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);

2
net/bridge/br_stp_if.c
View file

@ -111,7 +111,7 @@ void br_stp_disable_port(struct net_bridge_port *p)
del_timer(&p->forward_delay_timer);
del_timer(&p->hold_timer);
br_fdb_delete_by_port(br, p, 0);
br_fdb_delete_by_port(br, p, 0, 0);
br_multicast_disable_port(p);
br_configuration_update(br);

2
net/bridge/br_sysfs_if.c
View file

@ -160,7 +160,7 @@ static BRPORT_ATTR(hold_timer, S_IRUGO, show_hold_timer, NULL);
static int store_flush(struct net_bridge_port *p, unsigned long v)
{
br_fdb_delete_by_port(p->br, p, 0); // Don't delete local entry
br_fdb_delete_by_port(p->br, p, 0, 0); // Don't delete local entry
return 0;
}
static BRPORT_ATTR(flush, S_IWUSR, NULL, store_flush);

1
net/bridge/br_vlan.c
View file

@ -741,6 +741,7 @@ int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
return -EINVAL;
br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid);
br_fdb_delete_by_port(port->br, port, vid, 0);
return __vlan_del(pv, vid);
}