diff --git a/Documentation/netlink/specs/devlink.yaml b/Documentation/netlink/specs/devlink.yaml index 572d83a414d0d..43067e1f63aa9 100644 --- a/Documentation/netlink/specs/devlink.yaml +++ b/Documentation/netlink/specs/devlink.yaml @@ -1484,8 +1484,8 @@ operations: dont-validate: [ strict ] flags: [ admin-perm ] do: - pre: devlink-nl-pre-doit - post: devlink-nl-post-doit + pre: devlink-nl-pre-doit-dev-lock + post: devlink-nl-post-doit-dev-lock request: attributes: - bus-name diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c index e4b25e187467a..5b1f2483a3ccf 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/pci.c +++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c @@ -130,6 +130,7 @@ struct mlxsw_pci { const struct pci_device_id *id; enum mlxsw_pci_cqe_v max_cqe_ver; /* Maximal supported CQE version */ u8 num_sdq_cqs; /* Number of CQs used for SDQs */ + bool skip_reset; }; static void mlxsw_pci_queue_tasklet_schedule(struct mlxsw_pci_queue *q) @@ -1476,11 +1477,47 @@ static int mlxsw_pci_sys_ready_wait(struct mlxsw_pci *mlxsw_pci, return -EBUSY; } -static int mlxsw_pci_sw_reset(struct mlxsw_pci *mlxsw_pci, - const struct pci_device_id *id) +static int mlxsw_pci_reset_at_pci_disable(struct mlxsw_pci *mlxsw_pci) { struct pci_dev *pdev = mlxsw_pci->pdev; char mrsr_pl[MLXSW_REG_MRSR_LEN]; + int err; + + mlxsw_reg_mrsr_pack(mrsr_pl, + MLXSW_REG_MRSR_COMMAND_RESET_AT_PCI_DISABLE); + err = mlxsw_reg_write(mlxsw_pci->core, MLXSW_REG(mrsr), mrsr_pl); + if (err) + return err; + + device_lock_assert(&pdev->dev); + + pci_cfg_access_lock(pdev); + pci_save_state(pdev); + + err = __pci_reset_function_locked(pdev); + if (err) + pci_err(pdev, "PCI function reset failed with %d\n", err); + + pci_restore_state(pdev); + pci_cfg_access_unlock(pdev); + + return err; +} + +static int mlxsw_pci_reset_sw(struct mlxsw_pci *mlxsw_pci) +{ + char mrsr_pl[MLXSW_REG_MRSR_LEN]; + + mlxsw_reg_mrsr_pack(mrsr_pl, MLXSW_REG_MRSR_COMMAND_SOFTWARE_RESET); + return mlxsw_reg_write(mlxsw_pci->core, MLXSW_REG(mrsr), mrsr_pl); +} + +static int +mlxsw_pci_reset(struct mlxsw_pci *mlxsw_pci, const struct pci_device_id *id) +{ + struct pci_dev *pdev = mlxsw_pci->pdev; + char mcam_pl[MLXSW_REG_MCAM_LEN]; + bool pci_reset_supported; u32 sys_status; int err; @@ -1491,11 +1528,27 @@ static int mlxsw_pci_sw_reset(struct mlxsw_pci *mlxsw_pci, return err; } - mlxsw_reg_mrsr_pack(mrsr_pl); - err = mlxsw_reg_write(mlxsw_pci->core, MLXSW_REG(mrsr), mrsr_pl); + /* PCI core already issued a PCI reset, do not issue another reset. */ + if (mlxsw_pci->skip_reset) + return 0; + + mlxsw_reg_mcam_pack(mcam_pl, + MLXSW_REG_MCAM_FEATURE_GROUP_ENHANCED_FEATURES); + err = mlxsw_reg_query(mlxsw_pci->core, MLXSW_REG(mcam), mcam_pl); if (err) return err; + mlxsw_reg_mcam_unpack(mcam_pl, MLXSW_REG_MCAM_PCI_RESET, + &pci_reset_supported); + + if (pci_reset_supported) { + pci_dbg(pdev, "Starting PCI reset flow\n"); + err = mlxsw_pci_reset_at_pci_disable(mlxsw_pci); + } else { + pci_dbg(pdev, "Starting software reset flow\n"); + err = mlxsw_pci_reset_sw(mlxsw_pci); + } + err = mlxsw_pci_sys_ready_wait(mlxsw_pci, id, &sys_status); if (err) { dev_err(&pdev->dev, "Failed to reach system ready status after reset. Status is 0x%x\n", @@ -1537,9 +1590,9 @@ static int mlxsw_pci_init(void *bus_priv, struct mlxsw_core *mlxsw_core, if (!mbox) return -ENOMEM; - err = mlxsw_pci_sw_reset(mlxsw_pci, mlxsw_pci->id); + err = mlxsw_pci_reset(mlxsw_pci, mlxsw_pci->id); if (err) - goto err_sw_reset; + goto err_reset; err = mlxsw_pci_alloc_irq_vectors(mlxsw_pci); if (err < 0) { @@ -1672,7 +1725,7 @@ static int mlxsw_pci_init(void *bus_priv, struct mlxsw_core *mlxsw_core, err_query_fw: mlxsw_pci_free_irq_vectors(mlxsw_pci); err_alloc_irq: -err_sw_reset: +err_reset: mbox_put: mlxsw_cmd_mbox_free(mbox); return err; @@ -2059,11 +2112,34 @@ static void mlxsw_pci_remove(struct pci_dev *pdev) kfree(mlxsw_pci); } +static void mlxsw_pci_reset_prepare(struct pci_dev *pdev) +{ + struct mlxsw_pci *mlxsw_pci = pci_get_drvdata(pdev); + + mlxsw_core_bus_device_unregister(mlxsw_pci->core, false); +} + +static void mlxsw_pci_reset_done(struct pci_dev *pdev) +{ + struct mlxsw_pci *mlxsw_pci = pci_get_drvdata(pdev); + + mlxsw_pci->skip_reset = true; + mlxsw_core_bus_device_register(&mlxsw_pci->bus_info, &mlxsw_pci_bus, + mlxsw_pci, false, NULL, NULL); + mlxsw_pci->skip_reset = false; +} + +static const struct pci_error_handlers mlxsw_pci_err_handler = { + .reset_prepare = mlxsw_pci_reset_prepare, + .reset_done = mlxsw_pci_reset_done, +}; + int mlxsw_pci_driver_register(struct pci_driver *pci_driver) { pci_driver->probe = mlxsw_pci_probe; pci_driver->remove = mlxsw_pci_remove; pci_driver->shutdown = mlxsw_pci_remove; + pci_driver->err_handler = &mlxsw_pci_err_handler; return pci_register_driver(pci_driver); } EXPORT_SYMBOL(mlxsw_pci_driver_register); diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h index 25b294fdeb3df..e26e9d06bd721 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/reg.h +++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h @@ -10122,6 +10122,15 @@ mlxsw_reg_mgir_unpack(char *payload, u32 *hw_rev, char *fw_info_psid, MLXSW_REG_DEFINE(mrsr, MLXSW_REG_MRSR_ID, MLXSW_REG_MRSR_LEN); +enum mlxsw_reg_mrsr_command { + /* Switch soft reset, does not reset PCI firmware. */ + MLXSW_REG_MRSR_COMMAND_SOFTWARE_RESET = 1, + /* Reset will be done when PCI link will be disabled. + * This command will reset PCI firmware also. + */ + MLXSW_REG_MRSR_COMMAND_RESET_AT_PCI_DISABLE = 6, +}; + /* reg_mrsr_command * Reset/shutdown command * 0 - do nothing @@ -10130,10 +10139,11 @@ MLXSW_REG_DEFINE(mrsr, MLXSW_REG_MRSR_ID, MLXSW_REG_MRSR_LEN); */ MLXSW_ITEM32(reg, mrsr, command, 0x00, 0, 4); -static inline void mlxsw_reg_mrsr_pack(char *payload) +static inline void mlxsw_reg_mrsr_pack(char *payload, + enum mlxsw_reg_mrsr_command command) { MLXSW_REG_ZERO(mrsr, payload); - mlxsw_reg_mrsr_command_set(payload, 1); + mlxsw_reg_mrsr_command_set(payload, command); } /* MLCR - Management LED Control Register @@ -10584,6 +10594,8 @@ MLXSW_ITEM32(reg, mcam, feature_group, 0x00, 16, 8); enum mlxsw_reg_mcam_mng_feature_cap_mask_bits { /* If set, MCIA supports 128 bytes payloads. Otherwise, 48 bytes. */ MLXSW_REG_MCAM_MCIA_128B = 34, + /* If set, MRSR.command=6 is supported. */ + MLXSW_REG_MCAM_PCI_RESET = 48, }; #define MLXSW_REG_BYTES_PER_DWORD 0x4 diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 55bc3576a9856..69d20d585f889 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1219,6 +1219,9 @@ static int pci_dev_wait(struct pci_dev *dev, char *reset_type, int timeout) if (delay > PCI_RESET_WAIT) pci_info(dev, "ready %dms after %s\n", delay - 1, reset_type); + else + pci_dbg(dev, "ready %dms after %s\n", delay - 1, + reset_type); return 0; } diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index ea476252280ab..d208047d1b8f2 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3786,6 +3786,19 @@ static void quirk_no_pm_reset(struct pci_dev *dev) DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset); +/* + * Spectrum-{1,2,3,4} devices report that a D3hot->D0 transition causes a reset + * (i.e., they advertise NoSoftRst-). However, this transition does not have + * any effect on the device: It continues to be operational and network ports + * remain up. Advertising this support makes it seem as if a PM reset is viable + * for these devices. Mark it as unavailable to skip it when testing reset + * methods. + */ +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcb84, quirk_no_pm_reset); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf6c, quirk_no_pm_reset); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf70, quirk_no_pm_reset); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf80, quirk_no_pm_reset); + /* * Thunderbolt controllers with broken MSI hotplug signaling: * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part diff --git a/net/devlink/core.c b/net/devlink/core.c index 6984877e9f10d..4275a2bc6d8e0 100644 --- a/net/devlink/core.c +++ b/net/devlink/core.c @@ -503,14 +503,14 @@ static void __net_exit devlink_pernet_pre_exit(struct net *net) * all devlink instances from this namespace into init_net. */ devlinks_xa_for_each_registered_get(net, index, devlink) { - devl_lock(devlink); + devl_dev_lock(devlink, true); err = 0; if (devl_is_registered(devlink)) err = devlink_reload(devlink, &init_net, DEVLINK_RELOAD_ACTION_DRIVER_REINIT, DEVLINK_RELOAD_LIMIT_UNSPEC, &actions_performed, NULL); - devl_unlock(devlink); + devl_dev_unlock(devlink, true); devlink_put(devlink); if (err && err != -EOPNOTSUPP) pr_warn("Failed to reload devlink instance into init_net\n"); diff --git a/net/devlink/dev.c b/net/devlink/dev.c index 4fc7adb326631..ea6a92f2e6a2e 100644 --- a/net/devlink/dev.c +++ b/net/devlink/dev.c @@ -4,6 +4,7 @@ * Copyright (c) 2016 Jiri Pirko */ +#include #include #include #include "devl_internal.h" @@ -433,6 +434,13 @@ int devlink_reload(struct devlink *devlink, struct net *dest_net, struct net *curr_net; int err; + /* Make sure the reload operations are invoked with the device lock + * held to allow drivers to trigger functionality that expects it + * (e.g., PCI reset) and to close possible races between these + * operations and probe/remove. + */ + device_lock_assert(devlink->dev); + memcpy(remote_reload_stats, devlink->stats.remote_reload_stats, sizeof(remote_reload_stats)); diff --git a/net/devlink/devl_internal.h b/net/devlink/devl_internal.h index 183dbe3807ab3..5ea2e2012e930 100644 --- a/net/devlink/devl_internal.h +++ b/net/devlink/devl_internal.h @@ -3,6 +3,7 @@ * Copyright (c) 2016 Jiri Pirko */ +#include #include #include #include @@ -96,6 +97,20 @@ static inline bool devl_is_registered(struct devlink *devlink) return xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED); } +static inline void devl_dev_lock(struct devlink *devlink, bool dev_lock) +{ + if (dev_lock) + device_lock(devlink->dev); + devl_lock(devlink); +} + +static inline void devl_dev_unlock(struct devlink *devlink, bool dev_lock) +{ + devl_unlock(devlink); + if (dev_lock) + device_unlock(devlink->dev); +} + typedef void devlink_rel_notify_cb_t(struct devlink *devlink, u32 obj_index); typedef void devlink_rel_cleanup_cb_t(struct devlink *devlink, u32 obj_index, u32 rel_index); @@ -111,9 +126,6 @@ int devlink_rel_devlink_handle_put(struct sk_buff *msg, struct devlink *devlink, bool *msg_updated); /* Netlink */ -#define DEVLINK_NL_FLAG_NEED_PORT BIT(0) -#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1) - enum devlink_multicast_groups { DEVLINK_MCGRP_CONFIG, }; @@ -140,7 +152,8 @@ typedef int devlink_nl_dump_one_func_t(struct sk_buff *msg, int flags); struct devlink * -devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs); +devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs, + bool dev_lock); int devlink_nl_dumpit(struct sk_buff *msg, struct netlink_callback *cb, devlink_nl_dump_one_func_t *dump_one); diff --git a/net/devlink/health.c b/net/devlink/health.c index 695df61f8ac2a..71ae121dc739d 100644 --- a/net/devlink/health.c +++ b/net/devlink/health.c @@ -1151,7 +1151,8 @@ devlink_health_reporter_get_from_cb_lock(struct netlink_callback *cb) struct nlattr **attrs = info->attrs; struct devlink *devlink; - devlink = devlink_get_from_attrs_lock(sock_net(cb->skb->sk), attrs); + devlink = devlink_get_from_attrs_lock(sock_net(cb->skb->sk), attrs, + false); if (IS_ERR(devlink)) return NULL; diff --git a/net/devlink/netlink.c b/net/devlink/netlink.c index d0b90ebc8b152..fa9afe3e6d9b2 100644 --- a/net/devlink/netlink.c +++ b/net/devlink/netlink.c @@ -9,6 +9,10 @@ #include "devl_internal.h" +#define DEVLINK_NL_FLAG_NEED_PORT BIT(0) +#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1) +#define DEVLINK_NL_FLAG_NEED_DEV_LOCK BIT(2) + static const struct genl_multicast_group devlink_nl_mcgrps[] = { [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME }, }; @@ -61,7 +65,8 @@ int devlink_nl_msg_reply_and_new(struct sk_buff **msg, struct genl_info *info) } struct devlink * -devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs) +devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs, + bool dev_lock) { struct devlink *devlink; unsigned long index; @@ -75,12 +80,12 @@ devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs) devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]); devlinks_xa_for_each_registered_get(net, index, devlink) { - devl_lock(devlink); + devl_dev_lock(devlink, dev_lock); if (devl_is_registered(devlink) && strcmp(devlink->dev->bus->name, busname) == 0 && strcmp(dev_name(devlink->dev), devname) == 0) return devlink; - devl_unlock(devlink); + devl_dev_unlock(devlink, dev_lock); devlink_put(devlink); } @@ -90,11 +95,13 @@ devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs) static int __devlink_nl_pre_doit(struct sk_buff *skb, struct genl_info *info, u8 flags) { + bool dev_lock = flags & DEVLINK_NL_FLAG_NEED_DEV_LOCK; struct devlink_port *devlink_port; struct devlink *devlink; int err; - devlink = devlink_get_from_attrs_lock(genl_info_net(info), info->attrs); + devlink = devlink_get_from_attrs_lock(genl_info_net(info), info->attrs, + dev_lock); if (IS_ERR(devlink)) return PTR_ERR(devlink); @@ -114,7 +121,7 @@ static int __devlink_nl_pre_doit(struct sk_buff *skb, struct genl_info *info, return 0; unlock: - devl_unlock(devlink); + devl_dev_unlock(devlink, dev_lock); devlink_put(devlink); return err; } @@ -131,6 +138,12 @@ int devlink_nl_pre_doit_port(const struct genl_split_ops *ops, return __devlink_nl_pre_doit(skb, info, DEVLINK_NL_FLAG_NEED_PORT); } +int devlink_nl_pre_doit_dev_lock(const struct genl_split_ops *ops, + struct sk_buff *skb, struct genl_info *info) +{ + return __devlink_nl_pre_doit(skb, info, DEVLINK_NL_FLAG_NEED_DEV_LOCK); +} + int devlink_nl_pre_doit_port_optional(const struct genl_split_ops *ops, struct sk_buff *skb, struct genl_info *info) @@ -138,16 +151,30 @@ int devlink_nl_pre_doit_port_optional(const struct genl_split_ops *ops, return __devlink_nl_pre_doit(skb, info, DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT); } -void devlink_nl_post_doit(const struct genl_split_ops *ops, - struct sk_buff *skb, struct genl_info *info) +static void __devlink_nl_post_doit(struct sk_buff *skb, struct genl_info *info, + u8 flags) { + bool dev_lock = flags & DEVLINK_NL_FLAG_NEED_DEV_LOCK; struct devlink *devlink; devlink = info->user_ptr[0]; - devl_unlock(devlink); + devl_dev_unlock(devlink, dev_lock); devlink_put(devlink); } +void devlink_nl_post_doit(const struct genl_split_ops *ops, + struct sk_buff *skb, struct genl_info *info) +{ + __devlink_nl_post_doit(skb, info, 0); +} + +void +devlink_nl_post_doit_dev_lock(const struct genl_split_ops *ops, + struct sk_buff *skb, struct genl_info *info) +{ + __devlink_nl_post_doit(skb, info, DEVLINK_NL_FLAG_NEED_DEV_LOCK); +} + static int devlink_nl_inst_single_dumpit(struct sk_buff *msg, struct netlink_callback *cb, int flags, devlink_nl_dump_one_func_t *dump_one, @@ -156,7 +183,7 @@ static int devlink_nl_inst_single_dumpit(struct sk_buff *msg, struct devlink *devlink; int err; - devlink = devlink_get_from_attrs_lock(sock_net(msg->sk), attrs); + devlink = devlink_get_from_attrs_lock(sock_net(msg->sk), attrs, false); if (IS_ERR(devlink)) return PTR_ERR(devlink); err = dump_one(msg, devlink, cb, flags | NLM_F_DUMP_FILTERED); diff --git a/net/devlink/netlink_gen.c b/net/devlink/netlink_gen.c index 788dfdc498a95..95f9b4350ab71 100644 --- a/net/devlink/netlink_gen.c +++ b/net/devlink/netlink_gen.c @@ -846,9 +846,9 @@ const struct genl_split_ops devlink_nl_ops[73] = { { .cmd = DEVLINK_CMD_RELOAD, .validate = GENL_DONT_VALIDATE_STRICT, - .pre_doit = devlink_nl_pre_doit, + .pre_doit = devlink_nl_pre_doit_dev_lock, .doit = devlink_nl_reload_doit, - .post_doit = devlink_nl_post_doit, + .post_doit = devlink_nl_post_doit_dev_lock, .policy = devlink_reload_nl_policy, .maxattr = DEVLINK_ATTR_RELOAD_LIMITS, .flags = GENL_ADMIN_PERM | GENL_CMD_CAP_DO, diff --git a/net/devlink/netlink_gen.h b/net/devlink/netlink_gen.h index 0e9e89c31c314..02f3c0bfae0ee 100644 --- a/net/devlink/netlink_gen.h +++ b/net/devlink/netlink_gen.h @@ -22,12 +22,17 @@ int devlink_nl_pre_doit(const struct genl_split_ops *ops, struct sk_buff *skb, struct genl_info *info); int devlink_nl_pre_doit_port(const struct genl_split_ops *ops, struct sk_buff *skb, struct genl_info *info); +int devlink_nl_pre_doit_dev_lock(const struct genl_split_ops *ops, + struct sk_buff *skb, struct genl_info *info); int devlink_nl_pre_doit_port_optional(const struct genl_split_ops *ops, struct sk_buff *skb, struct genl_info *info); void devlink_nl_post_doit(const struct genl_split_ops *ops, struct sk_buff *skb, struct genl_info *info); +void +devlink_nl_post_doit_dev_lock(const struct genl_split_ops *ops, + struct sk_buff *skb, struct genl_info *info); int devlink_nl_get_doit(struct sk_buff *skb, struct genl_info *info); int devlink_nl_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb); diff --git a/net/devlink/region.c b/net/devlink/region.c index 0aab7b82d6780..e3bab458db940 100644 --- a/net/devlink/region.c +++ b/net/devlink/region.c @@ -883,7 +883,8 @@ int devlink_nl_region_read_dumpit(struct sk_buff *skb, start_offset = state->start_offset; - devlink = devlink_get_from_attrs_lock(sock_net(cb->skb->sk), attrs); + devlink = devlink_get_from_attrs_lock(sock_net(cb->skb->sk), attrs, + false); if (IS_ERR(devlink)) return PTR_ERR(devlink); diff --git a/tools/testing/selftests/drivers/net/mlxsw/pci_reset.sh b/tools/testing/selftests/drivers/net/mlxsw/pci_reset.sh new file mode 100755 index 0000000000000..fe0343b95e6c0 --- /dev/null +++ b/tools/testing/selftests/drivers/net/mlxsw/pci_reset.sh @@ -0,0 +1,58 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Test that PCI reset works correctly by verifying that only the expected reset +# methods are supported and that after issuing the reset the ifindex of the +# port changes. + +lib_dir=$(dirname $0)/../../../net/forwarding + +ALL_TESTS=" + pci_reset_test +" +NUM_NETIFS=1 +source $lib_dir/lib.sh +source $lib_dir/devlink_lib.sh + +pci_reset_test() +{ + RET=0 + + local bus=$(echo $DEVLINK_DEV | cut -d '/' -f 1) + local bdf=$(echo $DEVLINK_DEV | cut -d '/' -f 2) + + if [ $bus != "pci" ]; then + check_err 1 "devlink device is not a PCI device" + log_test "pci reset" + return + fi + + if [ ! -f /sys/bus/pci/devices/$bdf/reset_method ]; then + check_err 1 "reset is not supported" + log_test "pci reset" + return + fi + + [[ $(cat /sys/bus/pci/devices/$bdf/reset_method) == "bus" ]] + check_err $? "only \"bus\" reset method should be supported" + + local ifindex_pre=$(ip -j link show dev $swp1 | jq '.[]["ifindex"]') + + echo 1 > /sys/bus/pci/devices/$bdf/reset + check_err $? "reset failed" + + # Wait for udev to rename newly created netdev. + udevadm settle + + local ifindex_post=$(ip -j link show dev $swp1 | jq '.[]["ifindex"]') + + [[ $ifindex_pre != $ifindex_post ]] + check_err $? "reset not performed" + + log_test "pci reset" +} + +swp1=${NETIFS[p1]} +tests_run + +exit $EXIT_STATUS