Introduce a function that allows a VF to request the PF to reset itself. This is useful for example when the application detects that one of the queues have hung or any event where a reset is required and the PF is unlikely to trigger it.
Signed-off-by: Ciara Loftus <[email protected]> Signed-off-by: Timothy Miskell <[email protected]> --- drivers/net/intel/iavf/iavf.h | 2 ++ drivers/net/intel/iavf/iavf_ethdev.c | 5 ++++ drivers/net/intel/iavf/iavf_vchnl.c | 29 +++++++++++++++++++++++ drivers/net/intel/iavf/meson.build | 1 + drivers/net/intel/iavf/rte_pmd_iavf.c | 33 +++++++++++++++++++++++++++ drivers/net/intel/iavf/rte_pmd_iavf.h | 11 +++++++++ 6 files changed, 81 insertions(+) create mode 100644 drivers/net/intel/iavf/rte_pmd_iavf.c diff --git a/drivers/net/intel/iavf/iavf.h b/drivers/net/intel/iavf/iavf.h index 435902fbc2..6e7aec1bb1 100644 --- a/drivers/net/intel/iavf/iavf.h +++ b/drivers/net/intel/iavf/iavf.h @@ -565,4 +565,6 @@ void iavf_dev_watchdog_enable(struct iavf_adapter *adapter); void iavf_dev_watchdog_disable(struct iavf_adapter *adapter); void iavf_handle_hw_reset(struct rte_eth_dev *dev); void iavf_set_no_poll(struct iavf_adapter *adapter, bool link_change); +bool is_iavf_supported(struct rte_eth_dev *dev); +int iavf_request_reset(struct rte_eth_dev *dev); #endif /* _IAVF_ETHDEV_H_ */ diff --git a/drivers/net/intel/iavf/iavf_ethdev.c b/drivers/net/intel/iavf/iavf_ethdev.c index 08c814725d..996c7274ce 100644 --- a/drivers/net/intel/iavf/iavf_ethdev.c +++ b/drivers/net/intel/iavf/iavf_ethdev.c @@ -3212,6 +3212,11 @@ static struct rte_pci_driver rte_iavf_pmd = { .remove = eth_iavf_pci_remove, }; +bool is_iavf_supported(struct rte_eth_dev *dev) +{ + return !strcmp(dev->device->driver->name, rte_iavf_pmd.driver.name); +} + RTE_PMD_REGISTER_PCI(net_iavf, rte_iavf_pmd); RTE_PMD_REGISTER_PCI_TABLE(net_iavf, pci_id_iavf_map); RTE_PMD_REGISTER_KMOD_DEP(net_iavf, "* igb_uio | vfio-pci"); diff --git a/drivers/net/intel/iavf/iavf_vchnl.c b/drivers/net/intel/iavf/iavf_vchnl.c index b1b7a5bf94..65afd2c2d5 100644 --- a/drivers/net/intel/iavf/iavf_vchnl.c +++ b/drivers/net/intel/iavf/iavf_vchnl.c @@ -2271,3 +2271,32 @@ iavf_get_phc_time(struct ci_rx_queue *rxq) rte_spinlock_unlock(&vf->phc_time_aq_lock); return err; } + +int +iavf_request_reset(struct rte_eth_dev *dev) +{ + struct iavf_adapter *adapter = IAVF_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private); + struct iavf_info *vf = IAVF_DEV_PRIVATE_TO_VF(adapter); + struct iavf_cmd_info args; + int err = 0; + + args.ops = VIRTCHNL_OP_RESET_VF; + args.in_args = NULL; + args.in_args_size = 0; + args.out_buffer = vf->aq_resp; + args.out_size = IAVF_AQ_BUF_SZ; + + err = iavf_execute_vf_cmd_safe(adapter, &args, 0); + if (err) { + PMD_DRV_LOG(ERR, "Failed to execute command of VIRTCHNL_OP_RESET_VF"); + return err; + } + + PMD_DRV_LOG(DEBUG, "VF reset request sent to PF successfully"); + + vf->vf_reset = true; + iavf_set_no_poll(dev->data->dev_private, false); + iavf_dev_event_post(dev, RTE_ETH_EVENT_INTR_RESET, NULL, 0); + + return 0; +} diff --git a/drivers/net/intel/iavf/meson.build b/drivers/net/intel/iavf/meson.build index 0db94d6fe6..b39337733f 100644 --- a/drivers/net/intel/iavf/meson.build +++ b/drivers/net/intel/iavf/meson.build @@ -24,6 +24,7 @@ sources = files( 'iavf_tm.c', 'iavf_ipsec_crypto.c', 'iavf_fsub.c', + 'rte_pmd_iavf.c', ) if arch_subdir == 'x86' diff --git a/drivers/net/intel/iavf/rte_pmd_iavf.c b/drivers/net/intel/iavf/rte_pmd_iavf.c new file mode 100644 index 0000000000..4cb7fe11b8 --- /dev/null +++ b/drivers/net/intel/iavf/rte_pmd_iavf.c @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2010-2025 Intel Corporation + */ + +#include <eal_export.h> + +#include "iavf.h" +#include "rte_pmd_iavf.h" + +RTE_EXPORT_EXPERIMENTAL_SYMBOL(rte_pmd_iavf_reset, 25.11) +int +rte_pmd_iavf_reset(uint16_t port) +{ + struct rte_eth_dev *dev; + int ret; + + RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV); + + dev = &rte_eth_devices[port]; + + if (!is_iavf_supported(dev)) { + PMD_DRV_LOG(ERR, "Cannot reset VF, port %u is not an IAVF device.", port); + return -ENOTSUP; + } + + ret = iavf_request_reset(dev); + if (ret) { + PMD_DRV_LOG(ERR, "Request to reset VF failed for port %u", port); + return -1; + } + + return 0; +} diff --git a/drivers/net/intel/iavf/rte_pmd_iavf.h b/drivers/net/intel/iavf/rte_pmd_iavf.h index 56d453fc4c..1de490a977 100644 --- a/drivers/net/intel/iavf/rte_pmd_iavf.h +++ b/drivers/net/intel/iavf/rte_pmd_iavf.h @@ -95,6 +95,17 @@ extern uint64_t rte_pmd_ifd_dynflag_proto_xtr_tcp_mask; extern uint64_t rte_pmd_ifd_dynflag_proto_xtr_ip_offset_mask; extern uint64_t rte_pmd_ifd_dynflag_proto_xtr_ipsec_crypto_said_mask; +/** + * Request PF driver to initiate a PF-to-VF RESET + * + * @param port + * The port identifier of the Ethernet device. + * @return + * 0 if successful, otherwise if a failure occurs + */ +__rte_experimental +int rte_pmd_iavf_reset(uint16_t port); + /** * The mbuf dynamic field pointer for flexible descriptor's extraction metadata. */ -- 2.34.1
