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authorPetr Machata <petrm@mellanox.com>2018-05-03 14:43:46 +0200
committerDavid S. Miller <davem@davemloft.net>2018-05-03 13:46:47 -0400
commit816a3bed9549fcc0c90ba97c9077e64e734f0df6 (patch)
treeeff4b54b648c8b9d7c79d1592a4a18c9a435906f /net
parent0e913f28ba56d29c65a95ac5d46f25c42f876db0 (diff)
downloadlinux-816a3bed9549fcc0c90ba97c9077e64e734f0df6.tar.bz2
switchdev: Add fdb.added_by_user to switchdev notifications
The following patch enables sending notifications also for events on FDB entries that weren't added by the user. Give the drivers the information necessary to distinguish between the two origins of FDB entries. To maintain the current behavior, have switchdev-implementing drivers bail out on notifications about non-user-added FDB entries. In case of mlxsw driver, allow a call to mlxsw_sp_span_respin() so that SPAN over bridge catches up with the changed FDB. Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Acked-by: Ivan Vecera <ivecera@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/bridge/br_switchdev.c10
-rw-r--r--net/dsa/slave.c5
2 files changed, 11 insertions, 4 deletions
diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index ee775f4ff76c..71a03c487c4b 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -102,13 +102,15 @@ int br_switchdev_set_port_flag(struct net_bridge_port *p,
static void
br_switchdev_fdb_call_notifiers(bool adding, const unsigned char *mac,
- u16 vid, struct net_device *dev)
+ u16 vid, struct net_device *dev,
+ bool added_by_user)
{
struct switchdev_notifier_fdb_info info;
unsigned long notifier_type;
info.addr = mac;
info.vid = vid;
+ info.added_by_user = added_by_user;
notifier_type = adding ? SWITCHDEV_FDB_ADD_TO_DEVICE : SWITCHDEV_FDB_DEL_TO_DEVICE;
call_switchdev_notifiers(notifier_type, dev, &info.info);
}
@@ -123,12 +125,14 @@ br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
case RTM_DELNEIGH:
br_switchdev_fdb_call_notifiers(false, fdb->key.addr.addr,
fdb->key.vlan_id,
- fdb->dst->dev);
+ fdb->dst->dev,
+ fdb->added_by_user);
break;
case RTM_NEWNEIGH:
br_switchdev_fdb_call_notifiers(true, fdb->key.addr.addr,
fdb->key.vlan_id,
- fdb->dst->dev);
+ fdb->dst->dev,
+ fdb->added_by_user);
break;
}
}
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index f3fb3a0880b1..c287f1ef964c 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1441,6 +1441,7 @@ static int dsa_slave_switchdev_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
+ struct switchdev_notifier_fdb_info *fdb_info = ptr;
struct dsa_switchdev_event_work *switchdev_work;
if (!dsa_slave_dev_check(dev))
@@ -1458,8 +1459,10 @@ static int dsa_slave_switchdev_event(struct notifier_block *unused,
switch (event) {
case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */
case SWITCHDEV_FDB_DEL_TO_DEVICE:
+ if (!fdb_info->added_by_user)
+ break;
if (dsa_slave_switchdev_fdb_work_init(switchdev_work,
- ptr))
+ fdb_info))
goto err_fdb_work_init;
dev_hold(dev);
break;