netdev - [PATCH net-next v2 12/14] sfc: set EF100 VF MAC address through representor

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Message-ID: <304963d62ed1fa5f75437d1f832830d7970f9919.1658943678.git.ecree.xilinx@gmail.com>
Date:   Wed, 27 Jul 2022 18:46:02 +0100
From:   <ecree@...inx.com>
To:     <davem@...emloft.net>, <kuba@...nel.org>, <pabeni@...hat.com>,
        <linux-net-drivers@....com>
CC:     <netdev@...r.kernel.org>, Edward Cree <ecree.xilinx@...il.com>
Subject: [PATCH net-next v2 12/14] sfc: set EF100 VF MAC address through representor

From: Edward Cree <ecree.xilinx@...il.com>

When setting the VF rep's MAC address, set the provisioned MAC address
 for the VF through MC_CMD_SET_CLIENT_MAC_ADDRESSES.

Signed-off-by: Edward Cree <ecree.xilinx@...il.com>
---
 drivers/net/ethernet/sfc/ef100_rep.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/drivers/net/ethernet/sfc/ef100_rep.c b/drivers/net/ethernet/sfc/ef100_rep.c
index ebab4579e63b..58365a4c7c6a 100644
--- a/drivers/net/ethernet/sfc/ef100_rep.c
+++ b/drivers/net/ethernet/sfc/ef100_rep.c
@@ -107,6 +107,33 @@ static int efx_ef100_rep_get_phys_port_name(struct net_device *dev,
 	return 0;
 }
 
+static int efx_ef100_rep_set_mac_address(struct net_device *net_dev, void *data)
+{
+	MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_CLIENT_MAC_ADDRESSES_IN_LEN(1));
+	struct efx_rep *efv = netdev_priv(net_dev);
+	struct efx_nic *efx = efv->parent;
+	struct sockaddr *addr = data;
+	const u8 *new_addr = addr->sa_data;
+	int rc;
+
+	if (efv->clid == CLIENT_HANDLE_NULL) {
+		netif_info(efx, drv, net_dev, "Unable to set representee MAC address (client ID is null)\n");
+	} else {
+		BUILD_BUG_ON(MC_CMD_SET_CLIENT_MAC_ADDRESSES_OUT_LEN);
+		MCDI_SET_DWORD(inbuf, SET_CLIENT_MAC_ADDRESSES_IN_CLIENT_HANDLE,
+			       efv->clid);
+		ether_addr_copy(MCDI_PTR(inbuf, SET_CLIENT_MAC_ADDRESSES_IN_MAC_ADDRS),
+				new_addr);
+		rc = efx_mcdi_rpc(efx, MC_CMD_SET_CLIENT_MAC_ADDRESSES, inbuf,
+				  sizeof(inbuf), NULL, 0, NULL);
+		if (rc)
+			return rc;
+	}
+
+	eth_hw_addr_set(net_dev, new_addr);
+	return 0;
+}
+
 static void efx_ef100_rep_get_stats64(struct net_device *dev,
 				      struct rtnl_link_stats64 *stats)
 {
@@ -126,6 +153,7 @@ static const struct net_device_ops efx_ef100_rep_netdev_ops = {
 	.ndo_start_xmit		= efx_ef100_rep_xmit,
 	.ndo_get_port_parent_id	= efx_ef100_rep_get_port_parent_id,
 	.ndo_get_phys_port_name	= efx_ef100_rep_get_phys_port_name,
+	.ndo_set_mac_address    = efx_ef100_rep_set_mac_address,
 	.ndo_get_stats64	= efx_ef100_rep_get_stats64,
 };