From: Marcin Szycik marcin.szycik@linux.intel.com
[ Upstream commit 7598f4b40bd60e4a4280de645eb2893eea80b59d ]
Remove netdev_update_features() from iavf_adminq_task(), as it can cause deadlocks due to needing rtnl_lock. Instead use the IAVF_FLAG_SETUP_NETDEV_FEATURES flag to indicate that netdev features need to be updated in the watchdog task. iavf_set_vlan_offload_features() and iavf_set_queue_vlan_tag_loc() can be called directly from iavf_virtchnl_completion().
Suggested-by: Phani Burra phani.r.burra@intel.com Signed-off-by: Marcin Szycik marcin.szycik@linux.intel.com Reviewed-by: Alexander Lobakin alexandr.lobakin@intel.com Tested-by: Marek Szlosek marek.szlosek@intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Stable-dep-of: c2ed2403f12c ("iavf: Wait for reset in callbacks which trigger it") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/intel/iavf/iavf_main.c | 27 +++++++------------ .../net/ethernet/intel/iavf/iavf_virtchnl.c | 8 ++++++ 2 files changed, 17 insertions(+), 18 deletions(-)
diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c index 104de9a071449..68e951fe5e210 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_main.c +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c @@ -2689,6 +2689,15 @@ static void iavf_watchdog_task(struct work_struct *work) goto restart_watchdog; }
+ if ((adapter->flags & IAVF_FLAG_SETUP_NETDEV_FEATURES) && + adapter->netdev_registered && + !test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section) && + rtnl_trylock()) { + netdev_update_features(adapter->netdev); + rtnl_unlock(); + adapter->flags &= ~IAVF_FLAG_SETUP_NETDEV_FEATURES; + } + if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) iavf_change_state(adapter, __IAVF_COMM_FAILED);
@@ -3228,24 +3237,6 @@ static void iavf_adminq_task(struct work_struct *work) } while (pending); mutex_unlock(&adapter->crit_lock);
- if ((adapter->flags & IAVF_FLAG_SETUP_NETDEV_FEATURES)) { - if (adapter->netdev_registered || - !test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) { - struct net_device *netdev = adapter->netdev; - - rtnl_lock(); - netdev_update_features(netdev); - rtnl_unlock(); - /* Request VLAN offload settings */ - if (VLAN_V2_ALLOWED(adapter)) - iavf_set_vlan_offload_features - (adapter, 0, netdev->features); - - iavf_set_queue_vlan_tag_loc(adapter); - } - - adapter->flags &= ~IAVF_FLAG_SETUP_NETDEV_FEATURES; - } if ((adapter->flags & (IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED)) || adapter->state == __IAVF_RESETTING) diff --git a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c index 00dccdd290dce..07d37402a0df5 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c +++ b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c @@ -2237,6 +2237,14 @@ void iavf_virtchnl_completion(struct iavf_adapter *adapter,
iavf_process_config(adapter); adapter->flags |= IAVF_FLAG_SETUP_NETDEV_FEATURES; + + /* Request VLAN offload settings */ + if (VLAN_V2_ALLOWED(adapter)) + iavf_set_vlan_offload_features(adapter, 0, + netdev->features); + + iavf_set_queue_vlan_tag_loc(adapter); + was_mac_changed = !ether_addr_equal(netdev->dev_addr, adapter->hw.mac.addr);