diff options
author | Brett Creeley <brett.creeley@intel.com> | 2023-08-21 17:01:44 -0600 |
---|---|---|
committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2023-09-11 08:53:20 -0700 |
commit | 221465de6bd8090ab61267f019866e8d2dd4ea3d (patch) | |
tree | c6fec8c3ffc77c0775fbc87a15c190d1d42af337 /drivers/net/ethernet/intel/iavf/iavf_main.c | |
parent | 5ca636d927a106780451d957734f02589b972e2b (diff) |
iavf: Fix promiscuous mode configuration flow messages
Currently when configuring promiscuous mode on the AVF we detect a
change in the netdev->flags. We use IFF_PROMISC and IFF_ALLMULTI to
determine whether or not we need to request/release promiscuous mode
and/or multicast promiscuous mode. The problem is that the AQ calls for
setting/clearing promiscuous/multicast mode are treated separately. This
leads to a case where we can trigger two promiscuous mode AQ calls in
a row with the incorrect state. To fix this make a few changes.
Use IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE instead of the previous
IAVF_FLAG_AQ_[REQUEST|RELEASE]_[PROMISC|ALLMULTI] flags.
In iavf_set_rx_mode() detect if there is a change in the
netdev->flags in comparison with adapter->flags and set the
IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE aq_required bit. Then in
iavf_process_aq_command() only check for IAVF_FLAG_CONFIGURE_PROMISC_MODE
and call iavf_set_promiscuous() if it's set.
In iavf_set_promiscuous() check again to see which (if any) promiscuous
mode bits have changed when comparing the netdev->flags with the
adapter->flags. Use this to set the flags which get sent to the PF
driver.
Add a spinlock that is used for updating current_netdev_promisc_flags
and only allows one promiscuous mode AQ at a time.
[1] Fixes the fact that we will only have one AQ call in the aq_required
queue at any one time.
[2] Streamlines the change in promiscuous mode to only set one AQ
required bit.
[3] This allows us to keep track of the current state of the flags and
also makes it so we can take the most recent netdev->flags promiscuous
mode state.
[4] This fixes the problem where a change in the netdev->flags can cause
IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE to be set in iavf_set_rx_mode(),
but cleared in iavf_set_promiscuous() before the change is ever made via
AQ call.
Fixes: 47d3483988f6 ("i40evf: Add driver support for promiscuous mode")
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/iavf/iavf_main.c')
-rw-r--r-- | drivers/net/ethernet/intel/iavf/iavf_main.c | 43 |
1 files changed, 17 insertions, 26 deletions
diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c index 7b300c86ceda..36b94ee44211 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_main.c +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c @@ -1189,6 +1189,16 @@ static int iavf_addr_unsync(struct net_device *netdev, const u8 *addr) } /** + * iavf_promiscuous_mode_changed - check if promiscuous mode bits changed + * @adapter: device specific adapter + */ +bool iavf_promiscuous_mode_changed(struct iavf_adapter *adapter) +{ + return (adapter->current_netdev_promisc_flags ^ adapter->netdev->flags) & + (IFF_PROMISC | IFF_ALLMULTI); +} + +/** * iavf_set_rx_mode - NDO callback to set the netdev filters * @netdev: network interface device structure **/ @@ -1201,19 +1211,10 @@ static void iavf_set_rx_mode(struct net_device *netdev) __dev_mc_sync(netdev, iavf_addr_sync, iavf_addr_unsync); spin_unlock_bh(&adapter->mac_vlan_list_lock); - if (netdev->flags & IFF_PROMISC && - !(adapter->flags & IAVF_FLAG_PROMISC_ON)) - adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_PROMISC; - else if (!(netdev->flags & IFF_PROMISC) && - adapter->flags & IAVF_FLAG_PROMISC_ON) - adapter->aq_required |= IAVF_FLAG_AQ_RELEASE_PROMISC; - - if (netdev->flags & IFF_ALLMULTI && - !(adapter->flags & IAVF_FLAG_ALLMULTI_ON)) - adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_ALLMULTI; - else if (!(netdev->flags & IFF_ALLMULTI) && - adapter->flags & IAVF_FLAG_ALLMULTI_ON) - adapter->aq_required |= IAVF_FLAG_AQ_RELEASE_ALLMULTI; + spin_lock_bh(&adapter->current_netdev_promisc_flags_lock); + if (iavf_promiscuous_mode_changed(adapter)) + adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE; + spin_unlock_bh(&adapter->current_netdev_promisc_flags_lock); } /** @@ -2163,19 +2164,8 @@ static int iavf_process_aq_command(struct iavf_adapter *adapter) return 0; } - if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_PROMISC) { - iavf_set_promiscuous(adapter, FLAG_VF_UNICAST_PROMISC | - FLAG_VF_MULTICAST_PROMISC); - return 0; - } - - if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_ALLMULTI) { - iavf_set_promiscuous(adapter, FLAG_VF_MULTICAST_PROMISC); - return 0; - } - if ((adapter->aq_required & IAVF_FLAG_AQ_RELEASE_PROMISC) || - (adapter->aq_required & IAVF_FLAG_AQ_RELEASE_ALLMULTI)) { - iavf_set_promiscuous(adapter, 0); + if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE) { + iavf_set_promiscuous(adapter); return 0; } @@ -4971,6 +4961,7 @@ static int iavf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) spin_lock_init(&adapter->cloud_filter_list_lock); spin_lock_init(&adapter->fdir_fltr_lock); spin_lock_init(&adapter->adv_rss_lock); + spin_lock_init(&adapter->current_netdev_promisc_flags_lock); INIT_LIST_HEAD(&adapter->mac_filter_list); INIT_LIST_HEAD(&adapter->vlan_filter_list); |