linux-toradex.git/net/switchdev, branch v4.5-rc6

switchdev: Require RTNL mutex to be held when sending FDB notifications

2016-01-29T00:21:31+00:00

When switchdev drivers process FDB notifications from the underlying
device they resolve the netdev to which the entry points to and notify
the bridge using the switchdev notifier.

However, since the RTNL mutex is not held there is nothing preventing
the netdev from disappearing in the middle, which will cause
br_switchdev_event() to dereference a non-existing netdev.

Make switchdev drivers hold the lock at the beginning of the
notification processing session and release it once it ends, after
notifying the bridge.

Also, remove switchdev_mutex and fdb_lock, as they are no longer needed
when RTNL mutex is held.

Fixes: 03bf0c281234 ("switchdev: introduce switchdev notifier")
Signed-off-by: Ido Schimmel 
Signed-off-by: Jiri Pirko 
Signed-off-by: David S. Miller

switchdev: Adding MDB entry offload

2016-01-10T21:50:20+00:00

Define HW multicast entry: MAC and VID.
Using a MAC address simplifies support for both IPV4 and IPv6.

Signed-off-by: Elad Raz 
Signed-off-by: Ido Schimmel 
Signed-off-by: Jiri Pirko 
Signed-off-by: David S. Miller

switchdev: Pass original device to port netdev driver

2015-12-15T16:58:20+00:00

switchdev drivers need to know the netdev on which the switchdev op was
invoked. For example, the STP state of a VLAN interface configured on top
of a port can change while being member in a bridge. In this case, the
underlying driver should only change the STP state of that particular
VLAN and not of all the VLANs configured on the port.

However, current switchdev infrastructure only passes the port netdev down
to the driver. Solve that by passing the original device down to the
driver as part of the required switchdev object / attribute.

This doesn't entail any change in current switchdev drivers. It simply
enables those supporting stacked devices to know the originating device
and act accordingly.

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

switchdev: respect SKIP_EOPNOTSUPP flag in case there is no recursion

2015-11-03T18:39:21+00:00

Caller passing down the SKIP_EOPNOTSUPP switchdev flag expects that
-EOPNOTSUPP cannot be returned. But in case of direct op call without
recurtion, this may happen. So fix this by checking it always on the
end of __switchdev_port_attr_set function.

Fixes: 464314ea6c11 ("switchdev: skip over ports returning -EOPNOTSUPP when recursing ports")
Signed-off-by: Jiri Pirko 
Signed-off-by: David S. Miller

switchdev: fix: pass correct obj size when deferring obj add

2015-10-30T11:23:37+00:00

Fixes: 4d429c5dd ("switchdev: introduce possibility to defer obj_add/del")
Signed-off-by: Scott Feldman 
Acked-by: Jiri Pirko 
Signed-off-by: David S. Miller

switchdev: fix: erasing too much of vlan obj when handling multiple vlan specs

2015-10-30T11:23:35+00:00

When adding vlans with multiple IFLA_BRIDGE_VLAN_INFO attrs set in AFSPEC,
we would wipe the vlan obj struct after the first IFLA_BRIDGE_VLAN_INFO.
Fix this by only clearing what's necessary on each IFLA_BRIDGE_VLAN_INFO
iteration.

Fixes: 9e8f4a54 ("switchdev: push object ID back to object structure")
Signed-off-by: Scott Feldman 
Acked-by: Jiri Pirko 
Signed-off-by: David S. Miller

switchdev: Add support for flood control

2015-10-30T03:26:38+00:00

Allow devices supporting this feature to control the flooding of unknown
unicast traffic, by making switchdev infrastructure propagate this setting
to the switch driver.

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

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2015-10-20T13:08:27+00:00

Conflicts:
	drivers/net/usb/asix_common.c
	net/ipv4/inet_connection_sock.c
	net/switchdev/switchdev.c

In the inet_connection_sock.c case the request socket hashing scheme
is completely different in net-next.

The other two conflicts were overlapping changes.

Signed-off-by: David S. Miller

switchdev: assert rtnl mutex when going over lower netdevs

2015-10-15T13:09:53+00:00

netdev_for_each_lower_dev has to be called with rtnl mutex held. So
better enforce it in switchdev functions.

Signed-off-by: Jiri Pirko 
Signed-off-by: David S. Miller

switchdev: introduce possibility to defer obj_add/del

2015-10-15T13:09:49+00:00

Similar to the attr usecase, the caller knows if he is holding RTNL and is
in atomic section. So let the called to decide the correct call variant.

This allows drivers to sleep inside their ops and wait for hw to get the
operation status. Then the status is propagated into switchdev core.
This avoids silent errors in drivers.

Signed-off-by: Jiri Pirko 
Signed-off-by: David S. Miller