sfc_ef100: read pf_index at probe time

We'll need it later, for VF representors.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/sfc/ef100_nic.c

@@ -1096,6 +1096,10 @@ static int ef100_probe_main(struct efx_nic *efx)
 	if (rc)
 		goto fail;
 
+	rc = efx_get_pf_index(efx, &nic_data->pf_index);
+	if (rc)
+		goto fail;
+
 	rc = efx_ef100_init_datapath_caps(efx);
 	if (rc < 0)
 		goto fail;

drivers/net/ethernet/sfc/ef100_nic.h

@@ -63,6 +63,7 @@ struct ef100_nic_data {
 	u32 datapath_caps;
 	u32 datapath_caps2;
 	u32 datapath_caps3;
+	unsigned int pf_index;
 	u16 warm_boot_count;
 	u8 port_id[ETH_ALEN];
 	DECLARE_BITMAP(evq_phases, EFX_MAX_CHANNELS);