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| author | Florian Fainelli <f.fainelli@gmail.com> | 2019-02-06 20:45:35 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-02-07 01:16:11 +0300 |
| commit | d6abc5969463359c366d459247b90366fcd6f5c5 (patch) | |
| tree | b957d030e5c687e689f0da32c9585c81a7f6efbd /net/ipv4/ipmr.c | |
| parent | 47b98039fb6e1b3fc7b04a86a9c8ed5bbf604103 (diff) | |
| download | linux-d6abc5969463359c366d459247b90366fcd6f5c5.tar.xz | |
net: Introduce ndo_get_port_parent_id()
In preparation for getting rid of switchdev_ops, create a dedicated NDO
operation for getting the port's parent identifier. There are
essentially two classes of drivers that need to implement getting the
port's parent ID which are VF/PF drivers with a built-in switch, and
pure switchdev drivers such as mlxsw, ocelot, dsa etc.
We introduce a helper function: dev_get_port_parent_id() which supports
recursion into the lower devices to obtain the first port's parent ID.
Convert the bridge, core and ipv4 multicast routing code to check for
such ndo_get_port_parent_id() and call the helper function when valid
before falling back to switchdev_port_attr_get(). This will allow us to
convert all relevant drivers in one go instead of having to implement
both switchdev_port_attr_get() and ndo_get_port_parent_id() operations,
then get rid of switchdev_port_attr_get().
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ipmr.c')
| -rw-r--r-- | net/ipv4/ipmr.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index fb99002c3d4e..c71bcc42d66d 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -837,6 +837,7 @@ static void ipmr_update_thresholds(struct mr_table *mrt, struct mr_mfc *cache, static int vif_add(struct net *net, struct mr_table *mrt, struct vifctl *vifc, int mrtsock) { + const struct net_device_ops *ops; int vifi = vifc->vifc_vifi; struct switchdev_attr attr = { .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, @@ -920,7 +921,12 @@ static int vif_add(struct net *net, struct mr_table *mrt, (VIFF_TUNNEL | VIFF_REGISTER)); attr.orig_dev = dev; - if (!switchdev_port_attr_get(dev, &attr)) { + ops = dev->netdev_ops; + if (ops->ndo_get_port_parent_id && + !dev_get_port_parent_id(dev, &attr.u.ppid, true)) { + memcpy(v->dev_parent_id.id, attr.u.ppid.id, attr.u.ppid.id_len); + v->dev_parent_id.id_len = attr.u.ppid.id_len; + } else if (!switchdev_port_attr_get(dev, &attr)) { memcpy(v->dev_parent_id.id, attr.u.ppid.id, attr.u.ppid.id_len); v->dev_parent_id.id_len = attr.u.ppid.id_len; } else { |