svn commit: r330656 - head/sys/dev/mlx5/mlx5_en

[Hans Petter Selasky]

Author: hselasky
Date: Thu Mar  8 15:43:41 2018
New Revision: 330656
URL: https://svnweb.freebsd.org/changeset/base/330656

Log:
  Use the device unit number for naming the ifnet interface in mlx5en(4).
  
  Currently the ifnet interface is named mceX, where X is a monotonically
  incremented value. If the device is reset due to a fatal error, then the
  interface name will change.  Using the device unit number will keep the
  naming consistent across the reset logic.
  
  Submitted by:	Matthew Finlay <matt at mellanox.com>
  MFC after:	1 week
  Sponsored by:	Mellanox Technologies

Modified:
  head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c

Modified: head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c
==============================================================================
--- head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c	Thu Mar  8 15:37:09 2018	(r330655)
+++ head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c	Thu Mar  8 15:43:41 2018	(r330656)
@@ -3442,7 +3442,6 @@ mlx5e_setup_pauseframes(struct mlx5e_priv *priv)
 static void *
 mlx5e_create_ifp(struct mlx5_core_dev *mdev)
 {
-	static volatile int mlx5_en_unit;
 	struct ifnet *ifp;
 	struct mlx5e_priv *priv;
 	u8 dev_addr[ETHER_ADDR_LEN] __aligned(4);
@@ -3466,7 +3465,7 @@ mlx5e_create_ifp(struct mlx5_core_dev *mdev)
 		goto err_free_priv;
 	}
 	ifp->if_softc = priv;
-	if_initname(ifp, "mce", atomic_fetchadd_int(&mlx5_en_unit, 1));
+	if_initname(ifp, "mce", device_get_unit(mdev->pdev->dev.bsddev));
 	ifp->if_mtu = ETHERMTU;
 	ifp->if_init = mlx5e_open;
 	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;