netdev - [PATCH net-next 2/3] sfc: implement ndo_get_phys_port

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Date:   Tue, 10 Jan 2017 16:23:56 +0000
From:   Edward Cree <ecree@...arflare.com>
To:     <linux-net-drivers@...arflare.com>, <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>
Subject: [PATCH net-next 2/3] sfc: implement ndo_get_phys_port_name

From: Bert Kenward <bkenward@...arflare.com>

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@...arflare.com>
---
 drivers/net/ethernet/sfc/efx.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index c1aefbd9..bdbacb2 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -2347,6 +2347,16 @@ 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);
@@ -2389,6 +2399,7 @@ 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