diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/netdevsim/dev.c | 37 | ||||
| -rw-r--r-- | drivers/net/netdevsim/netdevsim.h | 1 |
2 files changed, 20 insertions, 18 deletions
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c index dd650d4301e5..68cd1defe990 100644 --- a/drivers/net/netdevsim/dev.c +++ b/drivers/net/netdevsim/dev.c @@ -59,7 +59,7 @@ static struct dentry *nsim_dev_ddir; unsigned int nsim_dev_get_vfs(struct nsim_dev *nsim_dev) { WARN_ON(!lockdep_rtnl_is_held() && - !lockdep_is_held(&nsim_dev->vfs_lock)); + !devl_lock_is_held(priv_to_devlink(nsim_dev))); return nsim_dev->nsim_bus_dev->num_vfs; } @@ -275,7 +275,7 @@ static ssize_t nsim_bus_dev_max_vfs_write(struct file *file, return -ENOMEM; nsim_dev = file->private_data; - mutex_lock(&nsim_dev->vfs_lock); + devl_lock(priv_to_devlink(nsim_dev)); /* Reject if VFs are configured */ if (nsim_dev_get_vfs(nsim_dev)) { ret = -EBUSY; @@ -285,7 +285,7 @@ static ssize_t nsim_bus_dev_max_vfs_write(struct file *file, *ppos += count; ret = count; } - mutex_unlock(&nsim_dev->vfs_lock); + devl_unlock(priv_to_devlink(nsim_dev)); kfree(vfconfigs); return ret; @@ -339,6 +339,7 @@ static int nsim_dev_debugfs_init(struct nsim_dev *nsim_dev) debugfs_create_bool("fail_trap_policer_counter_get", 0600, nsim_dev->ddir, &nsim_dev->fail_trap_policer_counter_get); + /* caution, dev_max_vfs write takes devlink lock */ debugfs_create_file("max_vfs", 0600, nsim_dev->ddir, nsim_dev, &nsim_dev_max_vfs_fops); @@ -567,6 +568,9 @@ static void nsim_dev_dummy_region_exit(struct nsim_dev *nsim_dev) devlink_region_destroy(nsim_dev->dummy_region); } +static int +__nsim_dev_port_add(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type, + unsigned int port_index); static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port); static int nsim_esw_legacy_enable(struct nsim_dev *nsim_dev, @@ -575,12 +579,10 @@ static int nsim_esw_legacy_enable(struct nsim_dev *nsim_dev, struct devlink *devlink = priv_to_devlink(nsim_dev); struct nsim_dev_port *nsim_dev_port, *tmp; - devlink_rate_nodes_destroy(devlink); - devl_lock(devlink); + devl_rate_nodes_destroy(devlink); list_for_each_entry_safe(nsim_dev_port, tmp, &nsim_dev->port_list, list) if (nsim_dev_port_is_vf(nsim_dev_port)) __nsim_dev_port_del(nsim_dev_port); - devl_unlock(devlink); nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY; return 0; } @@ -588,11 +590,11 @@ static int nsim_esw_legacy_enable(struct nsim_dev *nsim_dev, static int nsim_esw_switchdev_enable(struct nsim_dev *nsim_dev, struct netlink_ext_ack *extack) { - struct nsim_bus_dev *nsim_bus_dev = nsim_dev->nsim_bus_dev; + struct nsim_dev_port *nsim_dev_port, *tmp; int i, err; for (i = 0; i < nsim_dev_get_vfs(nsim_dev); i++) { - err = nsim_drv_port_add(nsim_bus_dev, NSIM_DEV_PORT_TYPE_VF, i); + err = __nsim_dev_port_add(nsim_dev, NSIM_DEV_PORT_TYPE_VF, i); if (err) { NL_SET_ERR_MSG_MOD(extack, "Failed to initialize VFs' netdevsim ports"); pr_err("Failed to initialize VF id=%d. %d.\n", i, err); @@ -603,8 +605,9 @@ static int nsim_esw_switchdev_enable(struct nsim_dev *nsim_dev, return 0; err_port_add_vfs: - for (i--; i >= 0; i--) - nsim_drv_port_del(nsim_bus_dev, NSIM_DEV_PORT_TYPE_VF, i); + list_for_each_entry_safe(nsim_dev_port, tmp, &nsim_dev->port_list, list) + if (nsim_dev_port_is_vf(nsim_dev_port)) + __nsim_dev_port_del(nsim_dev_port); return err; } @@ -614,7 +617,7 @@ static int nsim_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode, struct nsim_dev *nsim_dev = devlink_priv(devlink); int err = 0; - mutex_lock(&nsim_dev->vfs_lock); + devl_lock(devlink); if (mode == nsim_dev->esw_mode) goto unlock; @@ -626,7 +629,7 @@ static int nsim_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode, err = -EINVAL; unlock: - mutex_unlock(&nsim_dev->vfs_lock); + devl_unlock(devlink); return err; } @@ -1545,7 +1548,6 @@ int nsim_drv_probe(struct nsim_bus_dev *nsim_bus_dev) nsim_dev->switch_id.id_len = sizeof(nsim_dev->switch_id.id); get_random_bytes(nsim_dev->switch_id.id, nsim_dev->switch_id.id_len); INIT_LIST_HEAD(&nsim_dev->port_list); - mutex_init(&nsim_dev->vfs_lock); nsim_dev->fw_update_status = true; nsim_dev->fw_update_overwrite_mask = 0; nsim_dev->max_macs = NSIM_DEV_MAX_MACS_DEFAULT; @@ -1652,13 +1654,13 @@ static void nsim_dev_reload_destroy(struct nsim_dev *nsim_dev) return; debugfs_remove(nsim_dev->take_snapshot); - mutex_lock(&nsim_dev->vfs_lock); + devl_lock(devlink); if (nsim_dev_get_vfs(nsim_dev)) { nsim_bus_dev_set_vfs(nsim_dev->nsim_bus_dev, 0); if (nsim_esw_mode_is_switchdev(nsim_dev)) nsim_esw_legacy_enable(nsim_dev, NULL); } - mutex_unlock(&nsim_dev->vfs_lock); + devl_unlock(devlink); nsim_dev_port_del_all(nsim_dev); nsim_dev_hwstats_exit(nsim_dev); @@ -1736,9 +1738,10 @@ int nsim_drv_configure_vfs(struct nsim_bus_dev *nsim_bus_dev, unsigned int num_vfs) { struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev); + struct devlink *devlink = priv_to_devlink(nsim_dev); int ret = 0; - mutex_lock(&nsim_dev->vfs_lock); + devl_lock(devlink); if (nsim_bus_dev->num_vfs == num_vfs) goto exit_unlock; if (nsim_bus_dev->num_vfs && num_vfs) { @@ -1764,7 +1767,7 @@ int nsim_drv_configure_vfs(struct nsim_bus_dev *nsim_bus_dev, } exit_unlock: - mutex_unlock(&nsim_dev->vfs_lock); + devl_unlock(devlink); return ret; } diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h index 8dd6f975f32d..0b122872b2c9 100644 --- a/drivers/net/netdevsim/netdevsim.h +++ b/drivers/net/netdevsim/netdevsim.h @@ -261,7 +261,6 @@ struct nsim_dev { struct dentry *take_snapshot; struct dentry *nodes_ddir; - struct mutex vfs_lock; /* Protects vfconfigs */ struct nsim_vf_config *vfconfigs; struct bpf_offload_dev *bpf_dev; |