ice: Fix couple of issues in ice_vsi_release

Currently the driver is calling ice_napi_del() and then
unregister_netdev(). The call to unregister_netdev() will result in a
call to ice_stop() and then ice_vsi_close(). This is where we call
napi_disable() for all the MSI-X vectors. This flow is reversed so make
the changes to ensure napi_disable() happens prior to napi_del().

Before calling napi_del() and free_netdev() make sure
unregister_netdev() was called. This is done by making sure the
__ICE_DOWN bit is set in the vsi->state for the interested VSI.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 23e30a6..b5990ba 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -451,7 +451,6 @@ int ice_set_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size);
 int ice_get_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size);
 void ice_fill_rss_lut(u8 *lut, u16 rss_table_size, u16 rss_size);
 void ice_print_link_msg(struct ice_vsi *vsi, bool isup);
-void ice_napi_del(struct ice_vsi *vsi);
 #ifdef CONFIG_DCB
 int ice_pf_ena_all_vsi(struct ice_pf *pf, bool locked);
 void ice_pf_dis_all_vsi(struct ice_pf *pf, bool locked);

diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index fbf1eba..f14fa51 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -2754,19 +2754,14 @@ int ice_vsi_release(struct ice_vsi *vsi)
 
        if (vsi->type == ICE_VSI_VF)
                vf = &pf->vf[vsi->vf_id];
-       /* do not unregister and free netdevs while driver is in the reset
-        * recovery pending state. Since reset/rebuild happens through PF
-        * service task workqueue, its not a good idea to unregister netdev
-        * that is associated to the PF that is running the work queue items
-        * currently. This is done to avoid check_flush_dependency() warning
-        * on this wq
+       /* do not unregister while driver is in the reset recovery pending
+        * state. Since reset/rebuild happens through PF service task workqueue,
+        * it's not a good idea to unregister netdev that is associated to the
+        * PF that is running the work queue items currently. This is done to
+        * avoid check_flush_dependency() warning on this wq
         */
-       if (vsi->netdev && !ice_is_reset_in_progress(pf->state)) {
-               ice_napi_del(vsi);
+       if (vsi->netdev && !ice_is_reset_in_progress(pf->state))
                unregister_netdev(vsi->netdev);
-               free_netdev(vsi->netdev);
-               vsi->netdev = NULL;
-       }
 
        if (test_bit(ICE_FLAG_RSS_ENA, pf->flags))
                ice_rss_clean(vsi);
@@ -2799,6 +2794,13 @@ int ice_vsi_release(struct ice_vsi *vsi)
        ice_rm_vsi_lan_cfg(vsi->port_info, vsi->idx);
        ice_vsi_delete(vsi);
        ice_vsi_free_q_vectors(vsi);
+
+       /* make sure unregister_netdev() was called by checking __ICE_DOWN */
+       if (vsi->netdev && test_bit(__ICE_DOWN, vsi->state)) {
+               free_netdev(vsi->netdev);
+               vsi->netdev = NULL;
+       }
+
        ice_vsi_clear_rings(vsi);
 
        ice_vsi_put_qs(vsi);

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 65def27..0a4abc2 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -1667,7 +1667,7 @@ skip_req_irq:
  * ice_napi_del - Remove NAPI handler for the VSI
  * @vsi: VSI for which NAPI handler is to be removed
  */
-void ice_napi_del(struct ice_vsi *vsi)
+static void ice_napi_del(struct ice_vsi *vsi)
 {
        int v_idx;