[PATCH AUTOSEL 5.2 033/249] ice: Fix couple of issues in ice_vsi_release
From: Sasha Levin <sashal@kernel.org>
Date: 2019-07-15 13:48:46
Also in:
lkml, stable
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Brett Creeley <redacted> [ Upstream commit aa6ccf3f2d7042f94c4e91538956ce7051e7856e ] 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 <redacted> Signed-off-by: Anirudh Venkataramanan <redacted> Tested-by: Andrew Bowers <redacted> Signed-off-by: Jeff Kirsher <redacted> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/net/ethernet/intel/ice/ice.h | 1 - drivers/net/ethernet/intel/ice/ice_lib.c | 24 ++++++++++++----------- drivers/net/ethernet/intel/ice/ice_main.c | 2 +- 3 files changed, 14 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 792e6e42030e..754c7080c3fc 100644
--- 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 fbf1eba0cc2a..f14fa51cc704 100644
--- 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 7843abf4d44d..dbf3d39ad8b1 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c@@ -1667,7 +1667,7 @@ static int ice_req_irq_msix_misc(struct ice_pf *pf) * 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;
--
2.20.1