linux-toradex.git/net/bridge/br_multicast.c, branch v4.17

net: bridge: Send notification when host join/leaves a group

2017-11-10T04:41:40+00:00

The host can join or leave a multicast group on the brX interface, as
indicated by IGMP snooping.  This is tracked within the bridge
multicast code. Send a notification when this happens, in the same way
a notification is sent when a port of the bridge joins/leaves a group
because of IGMP snooping.

Signed-off-by: Andrew Lunn 
Acked-by: Nikolay Aleksandrov 
Acked-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: bridge: Rename mglist to host_joined

2017-11-10T04:41:40+00:00

The boolean mglist indicates the host has joined a particular
multicast group on the bridge interface. It is badly named, obscuring
what is means. Rename it.

Signed-off-by: Andrew Lunn 
Acked-by: Nikolay Aleksandrov 
Acked-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: bridge: Convert timers to use timer_setup()

2017-11-03T06:42:49+00:00

switch to using the new timer_setup() and from_timer() api's.

Signed-off-by: Allen Pais 
Signed-off-by: David S. Miller

net: bridge: Export bridge multicast router state

2017-10-09T17:18:11+00:00

Add an access function that, given a bridge netdevice, returns whether the
bridge device is currently an mrouter or not. The function uses the already
existing br_multicast_is_router function to check that.

This function is needed in order to allow ports that join an already
existing bridge to know the current mrouter state of the bridge device.
Together with the bridge device mrouter ports switchdev notifications, it
is possible to have full offloading of the semantics of the bridge device
mcast router state.

Due to the fact that the bridge multicast router status can change in
packet RX path, take the multicast_router bridge spinlock to protect the
read.

Signed-off-by: Yotam Gigi 
Reviewed-by: Nogah Frankel 
Reviewed-by: Nikolay Aleksandrov 
Signed-off-by: Jiri Pirko 
Signed-off-by: David S. Miller

net: bridge: Notify on bridge device mrouter state changes

2017-10-09T17:18:11+00:00

Add the SWITCHDEV_ATTR_ID_BRIDGE_MROUTER switchdev notification type, used
to indicate whether the bridge is or isn't mrouter. Notify when the bridge
changes its state, similarly to the already existing bridged port mrouter
notifications.

The notification uses the switchdev_attr.u.mrouter boolean flag to indicate
the current bridge mrouter status. Thus, it only indicates whether the
bridge is currently used as an mrouter or not, and does not indicate the
exact mrouter state of the bridge (learning, permanent, etc.).

Signed-off-by: Yotam Gigi 
Signed-off-by: Jiri Pirko 
Signed-off-by: Nikolay Aleksandrov 
Signed-off-by: David S. Miller

bridge: Export multicast enabled state

2017-05-26T19:18:44+00:00

During enslavement to a bridge, after the CHANGEUPPER is sent, the
multicast enabled state of the bridge isn't propagated down to the
offloading driver unless it's changed.

This patch allows such drivers to query the multicast enabled state from
the bridge, so that they'll be able to correctly configure their flood
tables during port enslavement.

In case multicast is disabled, unregistered multicast packets can be
treated as broadcast and be flooded through all the bridge ports.

Signed-off-by: Ido Schimmel 
Signed-off-by: Jiri Pirko 
Reviewed-by: Nikolay Aleksandrov 
Signed-off-by: David S. Miller

bridge: implement missing ndo_uninit()

2017-04-12T02:22:44+00:00

While the bridge driver implements an ndo_init(), it was missing a
symmetric ndo_uninit(), causing the different de-initialization
operations to be scattered around its dellink() and destructor().

Implement a symmetric ndo_uninit() and remove the overlapping operations
from its dellink() and destructor().

This is a prerequisite for the next patch, as it allows us to have a
proper cleanup upon changelink() failure during the bridge's newlink().

Fixes: b6677449dff6 ("bridge: netlink: call br_changelink() during br_dev_newlink()")
Signed-off-by: Nikolay Aleksandrov 
Signed-off-by: Ido Schimmel 
Signed-off-by: David S. Miller

switchdev: bridge: Offload mc router ports

2017-02-10T16:46:39+00:00

Offload the mc router ports list, whenever it is being changed.
It is done because in some cases mc packets needs to be flooded to all
the ports in this list.

Signed-off-by: Nogah Frankel 
Signed-off-by: Yotam Gigi 
Signed-off-by: Jiri Pirko 
Acked-by: Ivan Vecera 
Signed-off-by: David S. Miller

bridge: mcast: Merge the mc router ports deletions to one function

2017-02-10T16:46:38+00:00

There are three places where a port gets deleted from the mc router port
list. This patch join the actual deletion to one function.
It will be helpful for later patch that will offload changes in the mc
router ports list.

Signed-off-by: Nogah Frankel 
Signed-off-by: Yotam Gigi 
Signed-off-by: Jiri Pirko 
Acked-by: Ivan Vecera 
Signed-off-by: David S. Miller

switchdev: bridge: Offload multicast disabled

2017-02-10T16:46:38+00:00

Offload multicast disabled flag, for more accurate mc flood behavior:
When it is on, the mdb should be ignored.
When it is off, unregistered mc packets should be flooded to mc router
ports.

Signed-off-by: Nogah Frankel 
Signed-off-by: Yotam Gigi 
Signed-off-by: Jiri Pirko 
Acked-by: Ivan Vecera 
Signed-off-by: David S. Miller