diff options
| author |   Dave Ertman <david.m.ertman@intel.com> | 2018-10-26 10:41:04 -0700 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2018-11-13 09:09:26 -0800 |
| commit | d09e2693b689cc82cd9bae0c4f19f5122708f83e (patch) | |
| tree | b364e7dd7c2ed13919fbf24fbc40e34512c34a86 /drivers/net/ethernet/intel/ice/ice_main.c | |
| parent | ice: Calculate guaranteed VSIs per function and use it (diff) | |
| download | linux-dev-d09e2693b689cc82cd9bae0c4f19f5122708f83e.tar.xz linux-dev-d09e2693b689cc82cd9bae0c4f19f5122708f83e.zip | |
ice: Avoid nested RTNL locking in ice_dis_vsi
ice_dis_vsi() performs an rtnl_lock() if it detects a netdev that is
running on the VSI. In cases where the RTNL lock has already been
acquired, a deadlock results. Add a boolean to pass to ice_dis_vsi to
tell it if the RTNL lock is already held.
Signed-off-by: Dave Ertman <david.m.ertman@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>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_main.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c index ea79e5e1f589..089b0f0b2e71 100644 --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -3137,8 +3137,9 @@ static void ice_vsi_release_all(struct ice_pf *pf) /** * ice_dis_vsi - pause a VSI * @vsi: the VSI being paused + * @locked: is the rtnl_lock already held */ -static void ice_dis_vsi(struct ice_vsi *vsi) +static void ice_dis_vsi(struct ice_vsi *vsi, bool locked) { if (test_bit(__ICE_DOWN, vsi->state)) return; @@ -3147,9 +3148,13 @@ static void ice_dis_vsi(struct ice_vsi *vsi) if (vsi->type == ICE_VSI_PF && vsi->netdev) { if (netif_running(vsi->netdev)) { - rtnl_lock(); - vsi->netdev->netdev_ops->ndo_stop(vsi->netdev); - rtnl_unlock(); + if (!locked) { + rtnl_lock(); + vsi->netdev->netdev_ops->ndo_stop(vsi->netdev); + rtnl_unlock(); + } else { + vsi->netdev->netdev_ops->ndo_stop(vsi->netdev); + } } else { ice_vsi_close(vsi); } @@ -3188,7 +3193,7 @@ static void ice_pf_dis_all_vsi(struct ice_pf *pf) ice_for_each_vsi(pf, v) if (pf->vsi[v]) - ice_dis_vsi(pf->vsi[v]); + ice_dis_vsi(pf->vsi[v], false); } /** |