Re: [PATCH net-next 7/7] sfc: add support for devlink port_function_hw_addr_set in ef100

[Jiri Pirko <jiri@resnulli.us>]

Thu, Jan 19, 2023 at 12:31:40PM CET, alejandro.lucero-palau@amd.com wrote:
>From: Alejandro Lucero <alejandro.lucero-palau@amd.com>
>
>Using the builtin client handle id infrastructure, this patch adds
>support for setting the mac address linked to mports in ef100. This
>implies to execute an MCDI command for giving the address to the
>firmware for the specific devlink port.
>
>Signed-off-by: Alejandro Lucero <alejandro.lucero-palau@amd.com>
>---
> drivers/net/ethernet/sfc/efx_devlink.c | 44 ++++++++++++++++++++++++++
> 1 file changed, 44 insertions(+)
>
>diff --git a/drivers/net/ethernet/sfc/efx_devlink.c b/drivers/net/ethernet/sfc/efx_devlink.c
>index 2a57c4f6d2b2..a85b2d4e54ab 100644
>--- a/drivers/net/ethernet/sfc/efx_devlink.c
>+++ b/drivers/net/ethernet/sfc/efx_devlink.c
>@@ -472,6 +472,49 @@ static int efx_devlink_port_addr_get(struct devlink_port *port, u8 *hw_addr,
> 	return rc;
> }
> 
>+static int efx_devlink_port_addr_set(struct devlink_port *port,

Similar comments here as for the _get callback: embed devlink_port
struct, use extack.


>+				     const u8 *hw_addr, int hw_addr_len,
>+				     struct netlink_ext_ack *extack)
>+{
>+	MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_CLIENT_MAC_ADDRESSES_IN_LEN(1));
>+	struct efx_devlink *devlink = devlink_priv(port->devlink);
>+	struct mae_mport_desc *mport_desc;
>+	efx_qword_t pciefn;
>+	u32 client_id;
>+	int rc;
>+
>+	mport_desc = efx_mae_get_mport(devlink->efx, port->index);
>+	if (!mport_desc)
>+		return -EINVAL;
>+
>+	if (!ef100_mport_is_vf(mport_desc))
>+		return -EPERM;
>+
>+	EFX_POPULATE_QWORD_3(pciefn,
>+			     PCIE_FUNCTION_PF, PCIE_FUNCTION_PF_NULL,
>+			     PCIE_FUNCTION_VF, mport_desc->vf_idx,
>+			     PCIE_FUNCTION_INTF, PCIE_INTERFACE_CALLER);
>+
>+	rc = efx_ef100_lookup_client_id(devlink->efx, pciefn, &client_id);
>+	if (rc) {
>+		netif_err(devlink->efx, drv, devlink->efx->net_dev,
>+			  "Failed to get client ID for port index %u, rc %d\n",
>+			  port->index, rc);
>+		return rc;
>+	}
>+
>+	MCDI_SET_DWORD(inbuf, SET_CLIENT_MAC_ADDRESSES_IN_CLIENT_HANDLE,
>+		       client_id);
>+
>+	ether_addr_copy(MCDI_PTR(inbuf, SET_CLIENT_MAC_ADDRESSES_IN_MAC_ADDRS),
>+			hw_addr);
>+
>+	rc = efx_mcdi_rpc(devlink->efx, MC_CMD_SET_CLIENT_MAC_ADDRESSES, inbuf,
>+			  sizeof(inbuf), NULL, 0, NULL);
>+
>+	return rc;
>+}
>+
> static int efx_devlink_info_get(struct devlink *devlink,
> 				struct devlink_info_req *req,
> 				struct netlink_ext_ack *extack)
>@@ -486,6 +529,7 @@ static int efx_devlink_info_get(struct devlink *devlink,
> static const struct devlink_ops sfc_devlink_ops = {
> 	.info_get			= efx_devlink_info_get,
> 	.port_function_hw_addr_get	= efx_devlink_port_addr_get,
>+	.port_function_hw_addr_set	= efx_devlink_port_addr_set,
> };
> 
> static struct devlink_port *ef100_set_devlink_port(struct efx_nic *efx, u32 idx)
>-- 
>2.17.1
>