net/i40e: fix crash in close

Change the order of releasing the VSI's.
Release the VMDq VSI's first, then release the main VSI.

Fixes: 3cb446b4aeb2 ("i40e: free vmdq vsi when closing")
Cc: stable@dpdk.org
Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index a818998..0937dc4 100644 (file)
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2017 Intel Corporation. All rights reserved.
  *   All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
@@ -2072,18 +2072,17 @@ i40e_dev_close(struct rte_eth_dev *dev)
        /* shutdown and destroy the HMC */
        i40e_shutdown_lan_hmc(hw);
 
-       /* release all the existing VSIs and VEBs */
-       i40e_fdir_teardown(pf);
-       i40e_vsi_release(pf->main_vsi);
-
        for (i = 0; i < pf->nb_cfg_vmdq_vsi; i++) {
                i40e_vsi_release(pf->vmdq[i].vsi);
                pf->vmdq[i].vsi = NULL;
        }
-
        rte_free(pf->vmdq);
        pf->vmdq = NULL;
 
+       /* release all the existing VSIs and VEBs */
+       i40e_fdir_teardown(pf);
+       i40e_vsi_release(pf->main_vsi);
+
        /* shutdown the adminq */
        i40e_aq_queue_shutdown(hw, true);
        i40e_shutdown_adminq(hw);
@@ -4374,6 +4373,9 @@ i40e_vsi_release(struct i40e_vsi *vsi)
        if (!vsi)
                return I40E_SUCCESS;
 
+       if (!vsi->adapter)
+               return -EFAULT;
+
        user_param = vsi->user_param;
 
        pf = I40E_VSI_TO_PF(vsi);