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bridge: add API to notify bridge driver of learned FBD on offloaded device

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When the swdev device learns a new mac/vlan on a port, it sends some async
notification to the driver and the driver installs an FDB in the device.
To give a holistic system view, the learned mac/vlan should be reflected
in the bridge's FBD table, so the user, using normal iproute2 cmds, can view
what is currently learned by the device.  This API on the bridge driver gives
a way for the swdev driver to install an FBD entry in the bridge FBD table.
(And remove one).

This is equivalent to the device running these cmds:

  bridge fdb [add|del] <mac> dev <dev> vid <vlan id> master

This patch needs some extra eyeballs for review, in paricular around the
locking and contexts.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Scott Feldman
2014-11-28 14:34:21 +01:00
committed by David S. Miller
parent 38dcf357ae
commit cf6b8e1eed
4 changed files with 111 additions and 2 deletions
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18
include/linux/if_bridge.h
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@@ -37,6 +37,24 @@ extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __use
typedef int br_should_route_hook_t(struct sk_buff *skb);
extern br_should_route_hook_t __rcu *br_should_route_hook;
#if IS_ENABLED(CONFIG_BRIDGE)
int br_fdb_external_learn_add(struct net_device *dev,
const unsigned char *addr, u16 vid);
int br_fdb_external_learn_del(struct net_device *dev,
const unsigned char *addr, u16 vid);
#else
static inline int br_fdb_external_learn_add(struct net_device *dev,
const unsigned char *addr, u16 vid)
{
return 0;
}
static inline int br_fdb_external_learn_del(struct net_device *dev,
const unsigned char *addr, u16 vid)
{
return 0;
}
#endif
#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
int br_multicast_list_adjacent(struct net_device *dev,
struct list_head *br_ip_list);