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authorFlorian Fainelli <f.fainelli@gmail.com>2019-02-06 20:45:35 +0300
committerDavid S. Miller <davem@davemloft.net>2019-02-07 01:16:11 +0300
commitd6abc5969463359c366d459247b90366fcd6f5c5 (patch)
treeb957d030e5c687e689f0da32c9585c81a7f6efbd /include/linux/netdevice.h
parent47b98039fb6e1b3fc7b04a86a9c8ed5bbf604103 (diff)
downloadlinux-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 'include/linux/netdevice.h')
-rw-r--r--include/linux/netdevice.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index ba57d0ba425e..1d95e634f3fe 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1188,6 +1188,10 @@ struct dev_ifalias {
* not implement this, it is assumed that the hw is not able to have
* multiple net devices on single physical port.
*
+ * int (*ndo_get_port_parent_id)(struct net_device *dev,
+ * struct netdev_phys_item_id *ppid)
+ * Called to get the parent ID of the physical port of this device.
+ *
* void (*ndo_udp_tunnel_add)(struct net_device *dev,
* struct udp_tunnel_info *ti);
* Called by UDP tunnel to notify a driver about the UDP port and socket
@@ -1412,6 +1416,8 @@ struct net_device_ops {
bool new_carrier);
int (*ndo_get_phys_port_id)(struct net_device *dev,
struct netdev_phys_item_id *ppid);
+ int (*ndo_get_port_parent_id)(struct net_device *dev,
+ struct netdev_phys_item_id *ppid);
int (*ndo_get_phys_port_name)(struct net_device *dev,
char *name, size_t len);
void (*ndo_udp_tunnel_add)(struct net_device *dev,
@@ -3651,6 +3657,9 @@ int dev_get_phys_port_id(struct net_device *dev,
struct netdev_phys_item_id *ppid);
int dev_get_phys_port_name(struct net_device *dev,
char *name, size_t len);
+int dev_get_port_parent_id(struct net_device *dev,
+ struct netdev_phys_item_id *ppid, bool recurse);
+bool netdev_port_same_parent_id(struct net_device *a, struct net_device *b);
int dev_change_proto_down(struct net_device *dev, bool proto_down);
struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev, bool *again);
struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,