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net/devlink: Support setting hardware address of port function

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PCI PF and VF devlink port can manage the function represented by a
devlink port.

Allow users to set port function's hardware address.

Example of a PCI VF port which supports a port function:
$ devlink port show pci/0000:06:00.0/2
pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0 vfnum 1
  function:
    hw_addr 00:00:00:00:00:00

$ devlink port function set pci/0000:06:00.0/2 hw_addr 00:11:22:33:44:55

$ devlink port show pci/0000:06:00.0/2
pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0 vfnum 1
  function:
    hw_addr 00:11:22:33:44:55

Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Parav Pandit
2020-06-19 03:32:49 +00:00
committed by David S. Miller
parent 2a916ecc40
commit a1e8ae907c
2 changed files with 86 additions and 0 deletions
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10
include/net/devlink.h
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@@ -1119,6 +1119,16 @@ struct devlink_ops {
int (*port_function_hw_addr_get)(struct devlink *devlink, struct devlink_port *port,
u8 *hw_addr, int *hw_addr_len,
struct netlink_ext_ack *extack);
/**
* @port_function_hw_addr_set: Port function's hardware address set function.
*
* Should be used by device drivers to set the hardware address of a function managed
* by the devlink port. Driver should return -EOPNOTSUPP if it doesn't support port
* function handling for a particular port.
*/
int (*port_function_hw_addr_set)(struct devlink *devlink, struct devlink_port *port,
const u8 *hw_addr, int hw_addr_len,
struct netlink_ext_ack *extack);
};
static inline void *devlink_priv(struct devlink *devlink)