sfc: implement ndo_get_phys_port_name

Output is of the form p<port-number>.
Note that the port numbers don't necessarily map one-to-one to physical
 cages, partly because of 4x10G port modes on QSFP+ and partly because
 of hw/fw implementation details.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index eaae42fa109cc5e461d62f63ab883ed4219b4c42..543fa488d049ec90498e43127faf547c13d9f323 100644 (file)
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -2345,6 +2345,16 @@ int efx_get_phys_port_id(struct net_device *net_dev,
                return -EOPNOTSUPP;
 }
 
+static int efx_get_phys_port_name(struct net_device *net_dev,
+                                 char *name, size_t len)
+{
+       struct efx_nic *efx = netdev_priv(net_dev);
+
+       if (snprintf(name, len, "p%u", efx->port_num) >= len)
+               return -EINVAL;
+       return 0;
+}
+
 static int efx_vlan_rx_add_vid(struct net_device *net_dev, __be16 proto, u16 vid)
 {
        struct efx_nic *efx = netdev_priv(net_dev);
@@ -2387,6 +2397,7 @@ static const struct net_device_ops efx_netdev_ops = {
        .ndo_set_vf_link_state  = efx_sriov_set_vf_link_state,
 #endif
        .ndo_get_phys_port_id   = efx_get_phys_port_id,
+       .ndo_get_phys_port_name = efx_get_phys_port_name,
 #ifdef CONFIG_NET_POLL_CONTROLLER
        .ndo_poll_controller = efx_netpoll,
 #endif