bnxt_en: fix switchdev port naming for external-port-rep and vf-reps

Fix the phys_port_name for the external physical port to be in
"pA" format and that of VF-rep to be in "pCvfD" format as
suggested by Jakub Kicinski.

Fixes: c124a62ff2dd ("bnxt_en: add support for port_attr_get and get_phys_port_name")
Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -7552,11 +7552,7 @@ static int bnxt_get_phys_port_name(struct net_device *dev, char *buf,
 	if (!BNXT_PF(bp))
 		return -EOPNOTSUPP;
 
-	/* The switch-id that the pf belongs to is exported by
-	 * the switchdev ndo. This name is just to distinguish from the
-	 * vf-rep ports.
-	 */
-	rc = snprintf(buf, len, "pf%d", bp->pf.port_id);
+	rc = snprintf(buf, len, "p%d", bp->pf.port_id);
 
 	if (rc >= len)
 		return -EOPNOTSUPP;

drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c

@@ -141,9 +141,11 @@ static int bnxt_vf_rep_get_phys_port_name(struct net_device *dev, char *buf,
 					  size_t len)
 {
 	struct bnxt_vf_rep *vf_rep = netdev_priv(dev);
+	struct pci_dev *pf_pdev = vf_rep->bp->pdev;
 	int rc;
 
-	rc = snprintf(buf, len, "vfr%d", vf_rep->vf_idx);
+	rc = snprintf(buf, len, "pf%dvf%d", PCI_FUNC(pf_pdev->devfn),
+		      vf_rep->vf_idx);
 	if (rc >= len)
 		return -EOPNOTSUPP;
 	return 0;