From c8de44b577eb540e8bfea55afe1d0904bb571b7a Mon Sep 17 00:00:00 2001 From: Radoslaw Tyl Date: Mon, 7 Aug 2023 14:59:40 +0200 Subject: [PATCH 1/4] iavf: do not process adminq tasks when __IAVF_IN_REMOVE_TASK is set Prevent schedule operations for adminq during device remove and when __IAVF_IN_REMOVE_TASK flag is set. Currently, the iavf_down function adds operations for adminq that shouldn't be processed when the device is in the __IAVF_REMOVE state. Reproduction: echo 4 > /sys/bus/pci/devices/0000:17:00.0/sriov_numvfs ip link set dev ens1f0 vf 0 trust on ip link set dev ens1f0 vf 1 trust on ip link set dev ens1f0 vf 2 trust on ip link set dev ens1f0 vf 3 trust on ip link set dev ens1f0 vf 0 mac 00:22:33:44:55:66 ip link set dev ens1f0 vf 1 mac 00:22:33:44:55:67 ip link set dev ens1f0 vf 2 mac 00:22:33:44:55:68 ip link set dev ens1f0 vf 3 mac 00:22:33:44:55:69 echo 0000:17:02.0 > /sys/bus/pci/devices/0000\:17\:02.0/driver/unbind echo 0000:17:02.1 > /sys/bus/pci/devices/0000\:17\:02.1/driver/unbind echo 0000:17:02.2 > /sys/bus/pci/devices/0000\:17\:02.2/driver/unbind echo 0000:17:02.3 > /sys/bus/pci/devices/0000\:17\:02.3/driver/unbind sleep 10 echo 0000:17:02.0 > /sys/bus/pci/drivers/iavf/bind echo 0000:17:02.1 > /sys/bus/pci/drivers/iavf/bind echo 0000:17:02.2 > /sys/bus/pci/drivers/iavf/bind echo 0000:17:02.3 > /sys/bus/pci/drivers/iavf/bind modprobe vfio-pci echo 8086 154c > /sys/bus/pci/drivers/vfio-pci/new_id qemu-system-x86_64 -accel kvm -m 4096 -cpu host \ -drive file=centos9.qcow2,if=none,id=virtio-disk0 \ -device virtio-blk-pci,drive=virtio-disk0,bootindex=0 -smp 4 \ -device vfio-pci,host=17:02.0 -net none \ -device vfio-pci,host=17:02.1 -net none \ -device vfio-pci,host=17:02.2 -net none \ -device vfio-pci,host=17:02.3 -net none \ -daemonize -vnc :5 Current result: There is a probability that the mac of VF in guest is inconsistent with it in host Expected result: When passthrough NIC VF to guest, the VF in guest should always get the same mac as it in host. Fixes: 14756b2ae265 ("iavf: Fix __IAVF_RESETTING state usage") Signed-off-by: Radoslaw Tyl Tested-by: Rafal Romanowski Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/iavf/iavf_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c index 7b300c86ceda7..b23ca9d801891 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_main.c +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c @@ -1421,7 +1421,8 @@ void iavf_down(struct iavf_adapter *adapter) iavf_clear_fdir_filters(adapter); iavf_clear_adv_rss_conf(adapter); - if (!(adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)) { + if (!(adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) && + !(test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section))) { /* cancel any current operation */ adapter->current_op = VIRTCHNL_OP_UNKNOWN; /* Schedule operations to close down the HW. Don't wait From ed4cad33df9e272feaa6698b33359b29c2929564 Mon Sep 17 00:00:00 2001 From: Petr Oros Date: Thu, 7 Sep 2023 17:02:50 +0200 Subject: [PATCH 2/4] iavf: add iavf_schedule_aq_request() helper Add helper for set iavf aq request AVF_FLAG_AQ_* and immediately schedule watchdog_task. Helper will be used in cases where it is necessary to run aq requests asap Signed-off-by: Petr Oros Co-developed-by: Michal Schmidt Signed-off-by: Michal Schmidt Co-developed-by: Ivan Vecera Signed-off-by: Ivan Vecera Reviewed-by: Simon Horman Tested-by: Rafal Romanowski Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/iavf/iavf.h | 2 +- drivers/net/ethernet/intel/iavf/iavf_ethtool.c | 2 +- drivers/net/ethernet/intel/iavf/iavf_main.c | 10 ++++------ 3 files changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/intel/iavf/iavf.h b/drivers/net/ethernet/intel/iavf/iavf.h index 85fba85fbb232..e110ba3461857 100644 --- a/drivers/net/ethernet/intel/iavf/iavf.h +++ b/drivers/net/ethernet/intel/iavf/iavf.h @@ -521,7 +521,7 @@ void iavf_down(struct iavf_adapter *adapter); int iavf_process_config(struct iavf_adapter *adapter); int iavf_parse_vf_resource_msg(struct iavf_adapter *adapter); void iavf_schedule_reset(struct iavf_adapter *adapter, u64 flags); -void iavf_schedule_request_stats(struct iavf_adapter *adapter); +void iavf_schedule_aq_request(struct iavf_adapter *adapter, u64 flags); void iavf_schedule_finish_config(struct iavf_adapter *adapter); void iavf_reset(struct iavf_adapter *adapter); void iavf_set_ethtool_ops(struct net_device *netdev); diff --git a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c index a34303ad057d0..90397293525f7 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c +++ b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c @@ -362,7 +362,7 @@ static void iavf_get_ethtool_stats(struct net_device *netdev, unsigned int i; /* Explicitly request stats refresh */ - iavf_schedule_request_stats(adapter); + iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_REQUEST_STATS); iavf_add_ethtool_stats(&data, adapter, iavf_gstrings_stats); diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c index b23ca9d801891..4b02a8cd77e99 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_main.c +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c @@ -314,15 +314,13 @@ void iavf_schedule_reset(struct iavf_adapter *adapter, u64 flags) } /** - * iavf_schedule_request_stats - Set the flags and schedule statistics request + * iavf_schedule_aq_request - Set the flags and schedule aq request * @adapter: board private structure - * - * Sets IAVF_FLAG_AQ_REQUEST_STATS flag so iavf_watchdog_task() will explicitly - * request and refresh ethtool stats + * @flags: requested aq flags **/ -void iavf_schedule_request_stats(struct iavf_adapter *adapter) +void iavf_schedule_aq_request(struct iavf_adapter *adapter, u64 flags) { - adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_STATS; + adapter->aq_required |= flags; mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0); } From 5f3d319a248654a805bafc9e7094bcea47dac6c7 Mon Sep 17 00:00:00 2001 From: Petr Oros Date: Thu, 7 Sep 2023 17:02:51 +0200 Subject: [PATCH 3/4] iavf: schedule a request immediately after add/delete vlan When the iavf driver wants to reconfigure the VLAN filters (iavf_add_vlan, iavf_del_vlan), it sets a flag in aq_required: adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER; or: adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER; This is later processed by the watchdog_task, but it runs periodically every 2 seconds, so it can be a long time before it processes the request. In the worst case, the interface is unable to receive traffic for more than 2 seconds for no objective reason. Fixes: 5eae00c57f5e ("i40evf: main driver core") Signed-off-by: Petr Oros Co-developed-by: Michal Schmidt Signed-off-by: Michal Schmidt Co-developed-by: Ivan Vecera Signed-off-by: Ivan Vecera Reviewed-by: Ahmed Zaki Reviewed-by: Simon Horman Tested-by: Rafal Romanowski Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/iavf/iavf_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c index 4b02a8cd77e99..6a2e6d64bc3a5 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_main.c +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c @@ -821,7 +821,7 @@ iavf_vlan_filter *iavf_add_vlan(struct iavf_adapter *adapter, list_add_tail(&f->list, &adapter->vlan_filter_list); f->state = IAVF_VLAN_ADD; adapter->num_vlan_filters++; - adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER; + iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ADD_VLAN_FILTER); } clearout: @@ -843,7 +843,7 @@ static void iavf_del_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan) f = iavf_find_vlan(adapter, vlan); if (f) { f->state = IAVF_VLAN_REMOVE; - adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER; + iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_DEL_VLAN_FILTER); } spin_unlock_bh(&adapter->mac_vlan_list_lock); From d0d362ffa33da4acdcf7aee2116ceef8c8fef658 Mon Sep 17 00:00:00 2001 From: Ivan Vecera Date: Thu, 7 Sep 2023 17:44:57 +0200 Subject: [PATCH 4/4] i40e: Fix VF VLAN offloading when port VLAN is configured If port VLAN is configured on a VF then any other VLANs on top of this VF are broken. During i40e_ndo_set_vf_port_vlan() call the i40e driver reset the VF and iavf driver asks PF (using VIRTCHNL_OP_GET_VF_RESOURCES) for VF capabilities but this reset occurs too early, prior setting of vf->info.pvid field and because this field can be zero during i40e_vc_get_vf_resources_msg() then VIRTCHNL_VF_OFFLOAD_VLAN capability is reported to iavf driver. This is wrong because iavf driver should not report VLAN offloading capability when port VLAN is configured as i40e does not support QinQ offloading. Fix the issue by moving VF reset after setting of vf->port_vlan_id field. Without this patch: $ echo 1 > /sys/class/net/enp2s0f0/device/sriov_numvfs $ ip link set enp2s0f0 vf 0 vlan 3 $ ip link set enp2s0f0v0 up $ ip link add link enp2s0f0v0 name vlan4 type vlan id 4 $ ip link set vlan4 up ... $ ethtool -k enp2s0f0v0 | grep vlan-offload rx-vlan-offload: on tx-vlan-offload: on $ dmesg -l err | grep iavf [1292500.742914] iavf 0000:02:02.0: Failed to add VLAN filter, error IAVF_ERR_INVALID_QP_ID With this patch: $ echo 1 > /sys/class/net/enp2s0f0/device/sriov_numvfs $ ip link set enp2s0f0 vf 0 vlan 3 $ ip link set enp2s0f0v0 up $ ip link add link enp2s0f0v0 name vlan4 type vlan id 4 $ ip link set vlan4 up ... $ ethtool -k enp2s0f0v0 | grep vlan-offload rx-vlan-offload: off [requested on] tx-vlan-offload: off [requested on] $ dmesg -l err | grep iavf Fixes: f9b4b6278d51 ("i40e: Reset the VF upon conflicting VLAN configuration") Signed-off-by: Ivan Vecera Reviewed-by: Jesse Brandeburg Tested-by: Rafal Romanowski Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c index 8ea1a238dcefe..d3d6415553ed6 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c @@ -4475,9 +4475,7 @@ int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id, goto error_pvid; i40e_vlan_stripping_enable(vsi); - i40e_vc_reset_vf(vf, true); - /* During reset the VF got a new VSI, so refresh a pointer. */ - vsi = pf->vsi[vf->lan_vsi_idx]; + /* Locked once because multiple functions below iterate list */ spin_lock_bh(&vsi->mac_filter_hash_lock); @@ -4563,6 +4561,10 @@ int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id, */ vf->port_vlan_id = le16_to_cpu(vsi->info.pvid); + i40e_vc_reset_vf(vf, true); + /* During reset the VF got a new VSI, so refresh a pointer. */ + vsi = pf->vsi[vf->lan_vsi_idx]; + ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni); if (ret) { dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");