sfc: Store vf_index in nic_data for Ef10.

Added function efx_ef10_get_vf_index to store the vf_index
in nic_data during probe

vf_index is needed in future patches to access a particular
VF in the VF data structure.

Moved efx_ef10_probe_pf and efx_ef10_probe_vf in order to
used efx_ef10_remove

Signed-off-by: Shradha Shah <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/sfc/ef10.c

···
 	return 0;
 }
 
+#ifdef CONFIG_SFC_SRIOV
+static int efx_ef10_get_vf_index(struct efx_nic *efx)
+{
+	MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_FUNCTION_INFO_OUT_LEN);
+	struct efx_ef10_nic_data *nic_data = efx->nic_data;
+	size_t outlen;
+	int rc;
+
+	rc = efx_mcdi_rpc(efx, MC_CMD_GET_FUNCTION_INFO, NULL, 0, outbuf,
+			  sizeof(outbuf), &outlen);
+	if (rc)
+		return rc;
+	if (outlen < sizeof(outbuf))
+		return -EIO;
+
+	nic_data->vf_index = MCDI_DWORD(outbuf, GET_FUNCTION_INFO_OUT_VF);
+	return 0;
+}
+#endif
+
 static int efx_ef10_init_datapath_caps(struct efx_nic *efx)
 {
 	MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_CAPABILITIES_OUT_LEN);
···
 	efx->nic_data = NULL;
 	return rc;
 }
-
-static int efx_ef10_probe_pf(struct efx_nic *efx)
-{
-	return efx_ef10_probe(efx);
-}
-
-#ifdef CONFIG_SFC_SRIOV
-static int efx_ef10_probe_vf(struct efx_nic *efx)
-{
-	return efx_ef10_probe(efx);
-}
-#else
-static int efx_ef10_probe_vf(struct efx_nic *efx __attribute__ ((unused)))
-{
-	return 0;
-}
-#endif
 
 static int efx_ef10_free_vis(struct efx_nic *efx)
 {
···
 	efx_nic_free_buffer(efx, &nic_data->mcdi_buf);
 	kfree(nic_data);
 }
+
+static int efx_ef10_probe_pf(struct efx_nic *efx)
+{
+	return efx_ef10_probe(efx);
+}
+
+#ifdef CONFIG_SFC_SRIOV
+static int efx_ef10_probe_vf(struct efx_nic *efx)
+{
+	int rc;
+
+	rc = efx_ef10_probe(efx);
+	if (rc)
+		return rc;
+
+	rc = efx_ef10_get_vf_index(efx);
+	if (rc)
+		goto fail;
+
+	return 0;
+
+fail:
+	efx_ef10_remove(efx);
+	return rc;
+}
+#else
+static int efx_ef10_probe_vf(struct efx_nic *efx __attribute__ ((unused)))
+{
+	return 0;
+}
+#endif
 
 static int efx_ef10_alloc_vis(struct efx_nic *efx,
 			      unsigned int min_vis, unsigned int max_vis)

drivers/net/ethernet/sfc/nic.h

···
 	bool must_probe_vswitching;
 	unsigned int pf_index;
 #ifdef CONFIG_SFC_SRIOV
+	unsigned int vf_index;
 	struct ef10_vf *vf;
 #endif
 	u8 vport_mac[ETH_ALEN];