diff options
Diffstat (limited to 'drivers/net/netdevsim/dev.c')
| -rw-r--r-- | drivers/net/netdevsim/dev.c | 717 |
1 files changed, 620 insertions, 97 deletions
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c index 6189a4c0d39e..794fc0cc73b8 100644 --- a/drivers/net/netdevsim/dev.c +++ b/drivers/net/netdevsim/dev.c @@ -35,8 +35,43 @@ #include "netdevsim.h" +static unsigned int +nsim_dev_port_index(enum nsim_dev_port_type type, unsigned int port_index) +{ + switch (type) { + case NSIM_DEV_PORT_TYPE_VF: + port_index = NSIM_DEV_VF_PORT_INDEX_BASE + port_index; + break; + case NSIM_DEV_PORT_TYPE_PF: + break; + } + + return port_index; +} + +static inline unsigned int nsim_dev_port_index_to_vf_index(unsigned int port_index) +{ + return port_index - NSIM_DEV_VF_PORT_INDEX_BASE; +} + static struct dentry *nsim_dev_ddir; +unsigned int nsim_dev_get_vfs(struct nsim_dev *nsim_dev) +{ + WARN_ON(!lockdep_rtnl_is_held() && + !devl_lock_is_held(priv_to_devlink(nsim_dev))); + + return nsim_dev->nsim_bus_dev->num_vfs; +} + +static void +nsim_bus_dev_set_vfs(struct nsim_bus_dev *nsim_bus_dev, unsigned int num_vfs) +{ + rtnl_lock(); + nsim_bus_dev->num_vfs = num_vfs; + rtnl_unlock(); +} + #define NSIM_DEV_DUMMY_REGION_SIZE (1024 * 32) static int @@ -192,9 +227,82 @@ static const struct file_operations nsim_dev_trap_fa_cookie_fops = { .owner = THIS_MODULE, }; +static ssize_t nsim_bus_dev_max_vfs_read(struct file *file, char __user *data, + size_t count, loff_t *ppos) +{ + struct nsim_dev *nsim_dev = file->private_data; + char buf[11]; + ssize_t len; + + len = scnprintf(buf, sizeof(buf), "%u\n", + READ_ONCE(nsim_dev->nsim_bus_dev->max_vfs)); + + return simple_read_from_buffer(data, count, ppos, buf, len); +} + +static ssize_t nsim_bus_dev_max_vfs_write(struct file *file, + const char __user *data, + size_t count, loff_t *ppos) +{ + struct nsim_vf_config *vfconfigs; + struct nsim_dev *nsim_dev; + char buf[10]; + ssize_t ret; + u32 val; + + if (*ppos != 0) + return 0; + + if (count >= sizeof(buf)) + return -ENOSPC; + + ret = copy_from_user(buf, data, count); + if (ret) + return -EFAULT; + buf[count] = '\0'; + + ret = kstrtouint(buf, 10, &val); + if (ret) + return -EINVAL; + + /* max_vfs limited by the maximum number of provided port indexes */ + if (val > NSIM_DEV_VF_PORT_INDEX_MAX - NSIM_DEV_VF_PORT_INDEX_BASE) + return -ERANGE; + + vfconfigs = kcalloc(val, sizeof(struct nsim_vf_config), + GFP_KERNEL | __GFP_NOWARN); + if (!vfconfigs) + return -ENOMEM; + + nsim_dev = file->private_data; + devl_lock(priv_to_devlink(nsim_dev)); + /* Reject if VFs are configured */ + if (nsim_dev_get_vfs(nsim_dev)) { + ret = -EBUSY; + } else { + swap(nsim_dev->vfconfigs, vfconfigs); + WRITE_ONCE(nsim_dev->nsim_bus_dev->max_vfs, val); + *ppos += count; + ret = count; + } + devl_unlock(priv_to_devlink(nsim_dev)); + + kfree(vfconfigs); + return ret; +} + +static const struct file_operations nsim_dev_max_vfs_fops = { + .open = simple_open, + .read = nsim_bus_dev_max_vfs_read, + .write = nsim_bus_dev_max_vfs_write, + .llseek = generic_file_llseek, + .owner = THIS_MODULE, +}; + static int nsim_dev_debugfs_init(struct nsim_dev *nsim_dev) { char dev_ddir_name[sizeof(DRV_NAME) + 10]; + int err; sprintf(dev_ddir_name, DRV_NAME "%u", nsim_dev->nsim_bus_dev->dev.id); nsim_dev->ddir = debugfs_create_dir(dev_ddir_name, nsim_dev_ddir); @@ -231,30 +339,83 @@ 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); + + nsim_dev->nodes_ddir = debugfs_create_dir("rate_nodes", nsim_dev->ddir); + if (IS_ERR(nsim_dev->nodes_ddir)) { + err = PTR_ERR(nsim_dev->nodes_ddir); + goto err_out; + } + debugfs_create_bool("fail_trap_drop_counter_get", 0600, + nsim_dev->ddir, + &nsim_dev->fail_trap_drop_counter_get); nsim_udp_tunnels_debugfs_create(nsim_dev); return 0; + +err_out: + debugfs_remove_recursive(nsim_dev->ports_ddir); + debugfs_remove_recursive(nsim_dev->ddir); + return err; } static void nsim_dev_debugfs_exit(struct nsim_dev *nsim_dev) { + debugfs_remove_recursive(nsim_dev->nodes_ddir); debugfs_remove_recursive(nsim_dev->ports_ddir); debugfs_remove_recursive(nsim_dev->ddir); } +static ssize_t nsim_dev_rate_parent_read(struct file *file, + char __user *data, + size_t count, loff_t *ppos) +{ + char **name_ptr = file->private_data; + size_t len; + + if (!*name_ptr) + return 0; + + len = strlen(*name_ptr); + return simple_read_from_buffer(data, count, ppos, *name_ptr, len); +} + +static const struct file_operations nsim_dev_rate_parent_fops = { + .open = simple_open, + .read = nsim_dev_rate_parent_read, + .llseek = generic_file_llseek, + .owner = THIS_MODULE, +}; + static int nsim_dev_port_debugfs_init(struct nsim_dev *nsim_dev, struct nsim_dev_port *nsim_dev_port) { + struct nsim_bus_dev *nsim_bus_dev = nsim_dev->nsim_bus_dev; + unsigned int port_index = nsim_dev_port->port_index; char port_ddir_name[16]; char dev_link_name[32]; - sprintf(port_ddir_name, "%u", nsim_dev_port->port_index); + sprintf(port_ddir_name, "%u", port_index); nsim_dev_port->ddir = debugfs_create_dir(port_ddir_name, nsim_dev->ports_ddir); if (IS_ERR(nsim_dev_port->ddir)) return PTR_ERR(nsim_dev_port->ddir); - sprintf(dev_link_name, "../../../" DRV_NAME "%u", - nsim_dev->nsim_bus_dev->dev.id); + sprintf(dev_link_name, "../../../" DRV_NAME "%u", nsim_bus_dev->dev.id); + if (nsim_dev_port_is_vf(nsim_dev_port)) { + unsigned int vf_id = nsim_dev_port_index_to_vf_index(port_index); + + debugfs_create_u16("tx_share", 0400, nsim_dev_port->ddir, + &nsim_dev->vfconfigs[vf_id].min_tx_rate); + debugfs_create_u16("tx_max", 0400, nsim_dev_port->ddir, + &nsim_dev->vfconfigs[vf_id].max_tx_rate); + nsim_dev_port->rate_parent = debugfs_create_file("rate_parent", + 0400, + nsim_dev_port->ddir, + &nsim_dev_port->parent_name, + &nsim_dev_rate_parent_fops); + } debugfs_create_symlink("dev", nsim_dev_port->ddir, dev_link_name); return 0; @@ -275,62 +436,62 @@ static int nsim_dev_resources_register(struct devlink *devlink) int err; /* Resources for IPv4 */ - err = devlink_resource_register(devlink, "IPv4", (u64)-1, - NSIM_RESOURCE_IPV4, - DEVLINK_RESOURCE_ID_PARENT_TOP, - ¶ms); + err = devl_resource_register(devlink, "IPv4", (u64)-1, + NSIM_RESOURCE_IPV4, + DEVLINK_RESOURCE_ID_PARENT_TOP, + ¶ms); if (err) { pr_err("Failed to register IPv4 top resource\n"); goto out; } - err = devlink_resource_register(devlink, "fib", (u64)-1, - NSIM_RESOURCE_IPV4_FIB, - NSIM_RESOURCE_IPV4, ¶ms); + err = devl_resource_register(devlink, "fib", (u64)-1, + NSIM_RESOURCE_IPV4_FIB, + NSIM_RESOURCE_IPV4, ¶ms); if (err) { pr_err("Failed to register IPv4 FIB resource\n"); return err; } - err = devlink_resource_register(devlink, "fib-rules", (u64)-1, - NSIM_RESOURCE_IPV4_FIB_RULES, - NSIM_RESOURCE_IPV4, ¶ms); + err = devl_resource_register(devlink, "fib-rules", (u64)-1, + NSIM_RESOURCE_IPV4_FIB_RULES, + NSIM_RESOURCE_IPV4, ¶ms); if (err) { pr_err("Failed to register IPv4 FIB rules resource\n"); return err; } /* Resources for IPv6 */ - err = devlink_resource_register(devlink, "IPv6", (u64)-1, - NSIM_RESOURCE_IPV6, - DEVLINK_RESOURCE_ID_PARENT_TOP, - ¶ms); + err = devl_resource_register(devlink, "IPv6", (u64)-1, + NSIM_RESOURCE_IPV6, + DEVLINK_RESOURCE_ID_PARENT_TOP, + ¶ms); if (err) { pr_err("Failed to register IPv6 top resource\n"); goto out; } - err = devlink_resource_register(devlink, "fib", (u64)-1, - NSIM_RESOURCE_IPV6_FIB, - NSIM_RESOURCE_IPV6, ¶ms); + err = devl_resource_register(devlink, "fib", (u64)-1, + NSIM_RESOURCE_IPV6_FIB, + NSIM_RESOURCE_IPV6, ¶ms); if (err) { pr_err("Failed to register IPv6 FIB resource\n"); return err; } - err = devlink_resource_register(devlink, "fib-rules", (u64)-1, - NSIM_RESOURCE_IPV6_FIB_RULES, - NSIM_RESOURCE_IPV6, ¶ms); + err = devl_resource_register(devlink, "fib-rules", (u64)-1, + NSIM_RESOURCE_IPV6_FIB_RULES, + NSIM_RESOURCE_IPV6, ¶ms); if (err) { pr_err("Failed to register IPv6 FIB rules resource\n"); return err; } /* Resources for nexthops */ - err = devlink_resource_register(devlink, "nexthops", (u64)-1, - NSIM_RESOURCE_NEXTHOPS, - DEVLINK_RESOURCE_ID_PARENT_TOP, - ¶ms); + err = devl_resource_register(devlink, "nexthops", (u64)-1, + NSIM_RESOURCE_NEXTHOPS, + DEVLINK_RESOURCE_ID_PARENT_TOP, + ¶ms); out: return err; @@ -396,15 +557,82 @@ static int nsim_dev_dummy_region_init(struct nsim_dev *nsim_dev, struct devlink *devlink) { nsim_dev->dummy_region = - devlink_region_create(devlink, &dummy_region_ops, - NSIM_DEV_DUMMY_REGION_SNAPSHOT_MAX, - NSIM_DEV_DUMMY_REGION_SIZE); + devl_region_create(devlink, &dummy_region_ops, + NSIM_DEV_DUMMY_REGION_SNAPSHOT_MAX, + NSIM_DEV_DUMMY_REGION_SIZE); return PTR_ERR_OR_ZERO(nsim_dev->dummy_region); } static void nsim_dev_dummy_region_exit(struct nsim_dev *nsim_dev) { - devlink_region_destroy(nsim_dev->dummy_region); + devl_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, + struct netlink_ext_ack *extack) +{ + struct devlink *devlink = priv_to_devlink(nsim_dev); + struct nsim_dev_port *nsim_dev_port, *tmp; + + 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); + nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY; + return 0; +} + +static int nsim_esw_switchdev_enable(struct nsim_dev *nsim_dev, + struct netlink_ext_ack *extack) +{ + struct nsim_dev_port *nsim_dev_port, *tmp; + int i, err; + + for (i = 0; i < nsim_dev_get_vfs(nsim_dev); 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); + goto err_port_add_vfs; + } + } + nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_SWITCHDEV; + return 0; + +err_port_add_vfs: + 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; +} + +static int nsim_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode, + struct netlink_ext_ack *extack) +{ + struct nsim_dev *nsim_dev = devlink_priv(devlink); + + if (mode == nsim_dev->esw_mode) + return 0; + + if (mode == DEVLINK_ESWITCH_MODE_LEGACY) + return nsim_esw_legacy_enable(nsim_dev, extack); + if (mode == DEVLINK_ESWITCH_MODE_SWITCHDEV) + return nsim_esw_switchdev_enable(nsim_dev, extack); + + return -EINVAL; +} + +static int nsim_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode) +{ + struct nsim_dev *nsim_dev = devlink_priv(devlink); + + *mode = nsim_dev->esw_mode; + return 0; } struct nsim_trap_item { @@ -416,6 +644,7 @@ struct nsim_trap_data { struct delayed_work trap_report_dw; struct nsim_trap_item *trap_items_arr; u64 *trap_policers_cnt_arr; + u64 trap_pkt_cnt; struct nsim_dev *nsim_dev; spinlock_t trap_lock; /* Protects trap_items_arr */ }; @@ -603,14 +832,18 @@ static void nsim_dev_trap_report_work(struct work_struct *work) /* For each running port and enabled packet trap, generate a UDP * packet with a random 5-tuple and report it. */ - mutex_lock(&nsim_dev->port_list_lock); + if (!devl_trylock(priv_to_devlink(nsim_dev))) { + schedule_delayed_work(&nsim_dev->trap_data->trap_report_dw, 0); + return; + } + list_for_each_entry(nsim_dev_port, &nsim_dev->port_list, list) { if (!netif_running(nsim_dev_port->ns->netdev)) continue; nsim_dev_trap_report(nsim_dev_port); } - mutex_unlock(&nsim_dev->port_list_lock); + devl_unlock(priv_to_devlink(nsim_dev)); schedule_delayed_work(&nsim_dev->trap_data->trap_report_dw, msecs_to_jiffies(NSIM_TRAP_REPORT_INTERVAL_MS)); @@ -651,18 +884,18 @@ static int nsim_dev_traps_init(struct devlink *devlink) nsim_trap_data->nsim_dev = nsim_dev; nsim_dev->trap_data = nsim_trap_data; - err = devlink_trap_policers_register(devlink, nsim_trap_policers_arr, - policers_count); + err = devl_trap_policers_register(devlink, nsim_trap_policers_arr, + policers_count); if (err) goto err_trap_policers_cnt_free; - err = devlink_trap_groups_register(devlink, nsim_trap_groups_arr, - ARRAY_SIZE(nsim_trap_groups_arr)); + err = devl_trap_groups_register(devlink, nsim_trap_groups_arr, + ARRAY_SIZE(nsim_trap_groups_arr)); if (err) goto err_trap_policers_unregister; - err = devlink_traps_register(devlink, nsim_traps_arr, - ARRAY_SIZE(nsim_traps_arr), NULL); + err = devl_traps_register(devlink, nsim_traps_arr, + ARRAY_SIZE(nsim_traps_arr), NULL); if (err) goto err_trap_groups_unregister; @@ -674,11 +907,11 @@ static int nsim_dev_traps_init(struct devlink *devlink) return 0; err_trap_groups_unregister: - devlink_trap_groups_unregister(devlink, nsim_trap_groups_arr, - ARRAY_SIZE(nsim_trap_groups_arr)); + devl_trap_groups_unregister(devlink, nsim_trap_groups_arr, + ARRAY_SIZE(nsim_trap_groups_arr)); err_trap_policers_unregister: - devlink_trap_policers_unregister(devlink, nsim_trap_policers_arr, - ARRAY_SIZE(nsim_trap_policers_arr)); + devl_trap_policers_unregister(devlink, nsim_trap_policers_arr, + ARRAY_SIZE(nsim_trap_policers_arr)); err_trap_policers_cnt_free: kfree(nsim_trap_data->trap_policers_cnt_arr); err_trap_items_free: @@ -692,13 +925,14 @@ static void nsim_dev_traps_exit(struct devlink *devlink) { struct nsim_dev *nsim_dev = devlink_priv(devlink); + /* caution, trap work takes devlink lock */ cancel_delayed_work_sync(&nsim_dev->trap_data->trap_report_dw); - devlink_traps_unregister(devlink, nsim_traps_arr, - ARRAY_SIZE(nsim_traps_arr)); - devlink_trap_groups_unregister(devlink, nsim_trap_groups_arr, - ARRAY_SIZE(nsim_trap_groups_arr)); - devlink_trap_policers_unregister(devlink, nsim_trap_policers_arr, - ARRAY_SIZE(nsim_trap_policers_arr)); + devl_traps_unregister(devlink, nsim_traps_arr, + ARRAY_SIZE(nsim_traps_arr)); + devl_trap_groups_unregister(devlink, nsim_trap_groups_arr, + ARRAY_SIZE(nsim_trap_groups_arr)); + devl_trap_policers_unregister(devlink, nsim_trap_policers_arr, + ARRAY_SIZE(nsim_trap_policers_arr)); kfree(nsim_dev->trap_data->trap_policers_cnt_arr); kfree(nsim_dev->trap_data->trap_items_arr); kfree(nsim_dev->trap_data); @@ -741,6 +975,7 @@ static int nsim_dev_reload_up(struct devlink *devlink, enum devlink_reload_actio } *actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT); + return nsim_dev_reload_create(nsim_dev, extack); } @@ -748,7 +983,17 @@ static int nsim_dev_info_get(struct devlink *devlink, struct devlink_info_req *req, struct netlink_ext_ack *extack) { - return devlink_info_driver_name_put(req, DRV_NAME); + int err; + + err = devlink_info_driver_name_put(req, DRV_NAME); + if (err) + return err; + err = devlink_info_version_stored_put_ext(req, "fw.mgmt", "10.20.30", + DEVLINK_INFO_VERSION_TYPE_COMPONENT); + if (err) + return err; + return devlink_info_version_running_put_ext(req, "fw.mgmt", "10.20.30", + DEVLINK_INFO_VERSION_TYPE_COMPONENT); } #define NSIM_DEV_FLASH_SIZE 500000 @@ -892,9 +1137,191 @@ nsim_dev_devlink_trap_policer_counter_get(struct devlink *devlink, return 0; } +#define NSIM_LINK_SPEED_MAX 5000 /* Mbps */ +#define NSIM_LINK_SPEED_UNIT 125000 /* 1 Mbps given in bytes/sec to avoid + * u64 overflow during conversion from + * bytes to bits. + */ + +static int nsim_rate_bytes_to_units(char *name, u64 *rate, struct netlink_ext_ack *extack) +{ + u64 val; + u32 rem; + + val = div_u64_rem(*rate, NSIM_LINK_SPEED_UNIT, &rem); + if (rem) { + pr_err("%s rate value %lluBps not in link speed units of 1Mbps.\n", + name, *rate); + NL_SET_ERR_MSG_MOD(extack, "TX rate value not in link speed units of 1Mbps."); + return -EINVAL; + } + + if (val > NSIM_LINK_SPEED_MAX) { + pr_err("%s rate value %lluMbps exceed link maximum speed 5000Mbps.\n", + name, val); + NL_SET_ERR_MSG_MOD(extack, "TX rate value exceed link maximum speed 5000Mbps."); + return -EINVAL; + } + *rate = val; + return 0; +} + +static int nsim_leaf_tx_share_set(struct devlink_rate *devlink_rate, void *priv, + u64 tx_share, struct netlink_ext_ack *extack) +{ + struct nsim_dev_port *nsim_dev_port = priv; + struct nsim_dev *nsim_dev = nsim_dev_port->ns->nsim_dev; + int vf_id = nsim_dev_port_index_to_vf_index(nsim_dev_port->port_index); + int err; + + err = nsim_rate_bytes_to_units("tx_share", &tx_share, extack); + if (err) + return err; + + nsim_dev->vfconfigs[vf_id].min_tx_rate = tx_share; + return 0; +} + +static int nsim_leaf_tx_max_set(struct devlink_rate *devlink_rate, void *priv, + u64 tx_max, struct netlink_ext_ack *extack) +{ + struct nsim_dev_port *nsim_dev_port = priv; + struct nsim_dev *nsim_dev = nsim_dev_port->ns->nsim_dev; + int vf_id = nsim_dev_port_index_to_vf_index(nsim_dev_port->port_index); + int err; + + err = nsim_rate_bytes_to_units("tx_max", &tx_max, extack); + if (err) + return err; + + nsim_dev->vfconfigs[vf_id].max_tx_rate = tx_max; + return 0; +} + +struct nsim_rate_node { + struct dentry *ddir; + struct dentry *rate_parent; + char *parent_name; + u16 tx_share; + u16 tx_max; +}; + +static int nsim_node_tx_share_set(struct devlink_rate *devlink_rate, void *priv, + u64 tx_share, struct netlink_ext_ack *extack) +{ + struct nsim_rate_node *nsim_node = priv; + int err; + + err = nsim_rate_bytes_to_units("tx_share", &tx_share, extack); + if (err) + return err; + + nsim_node->tx_share = tx_share; + return 0; +} + +static int nsim_node_tx_max_set(struct devlink_rate *devlink_rate, void *priv, + u64 tx_max, struct netlink_ext_ack *extack) +{ + struct nsim_rate_node *nsim_node = priv; + int err; + + err = nsim_rate_bytes_to_units("tx_max", &tx_max, extack); + if (err) + return err; + + nsim_node->tx_max = tx_max; + return 0; +} + +static int nsim_rate_node_new(struct devlink_rate *node, void **priv, + struct netlink_ext_ack *extack) +{ + struct nsim_dev *nsim_dev = devlink_priv(node->devlink); + struct nsim_rate_node *nsim_node; + + if (!nsim_esw_mode_is_switchdev(nsim_dev)) { + NL_SET_ERR_MSG_MOD(extack, "Node creation allowed only in switchdev mode."); + return -EOPNOTSUPP; + } + + nsim_node = kzalloc(sizeof(*nsim_node), GFP_KERNEL); + if (!nsim_node) + return -ENOMEM; + + nsim_node->ddir = debugfs_create_dir(node->name, nsim_dev->nodes_ddir); + + debugfs_create_u16("tx_share", 0400, nsim_node->ddir, &nsim_node->tx_share); + debugfs_create_u16("tx_max", 0400, nsim_node->ddir, &nsim_node->tx_max); + nsim_node->rate_parent = debugfs_create_file("rate_parent", 0400, + nsim_node->ddir, + &nsim_node->parent_name, + &nsim_dev_rate_parent_fops); + + *priv = nsim_node; + return 0; +} + +static int nsim_rate_node_del(struct devlink_rate *node, void *priv, + struct netlink_ext_ack *extack) +{ + struct nsim_rate_node *nsim_node = priv; + + debugfs_remove(nsim_node->rate_parent); + debugfs_remove_recursive(nsim_node->ddir); + kfree(nsim_node); + return 0; +} + +static int nsim_rate_leaf_parent_set(struct devlink_rate *child, + struct devlink_rate *parent, + void *priv_child, void *priv_parent, + struct netlink_ext_ack *extack) +{ + struct nsim_dev_port *nsim_dev_port = priv_child; + + if (parent) + nsim_dev_port->parent_name = parent->name; + else + nsim_dev_port->parent_name = NULL; + return 0; +} + +static int nsim_rate_node_parent_set(struct devlink_rate *child, + struct devlink_rate *parent, + void *priv_child, void *priv_parent, + struct netlink_ext_ack *extack) +{ + struct nsim_rate_node *nsim_node = priv_child; + + if (parent) + nsim_node->parent_name = parent->name; + else + nsim_node->parent_name = NULL; + return 0; +} + +static int +nsim_dev_devlink_trap_drop_counter_get(struct devlink *devlink, + const struct devlink_trap *trap, + u64 *p_drops) +{ + struct nsim_dev *nsim_dev = devlink_priv(devlink); + u64 *cnt; + + if (nsim_dev->fail_trap_drop_counter_get) + return -EINVAL; + + cnt = &nsim_dev->trap_data->trap_pkt_cnt; + *p_drops = (*cnt)++; + + return 0; +} + static const struct devlink_ops nsim_dev_devlink_ops = { - .supported_flash_update_params = DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT | - DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK, + .eswitch_mode_set = nsim_devlink_eswitch_mode_set, + .eswitch_mode_get = nsim_devlink_eswitch_mode_get, + .supported_flash_update_params = DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK, .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT), .reload_down = nsim_dev_reload_down, .reload_up = nsim_dev_reload_up, @@ -905,12 +1332,21 @@ static const struct devlink_ops nsim_dev_devlink_ops = { .trap_group_set = nsim_dev_devlink_trap_group_set, .trap_policer_set = nsim_dev_devlink_trap_policer_set, .trap_policer_counter_get = nsim_dev_devlink_trap_policer_counter_get, + .rate_leaf_tx_share_set = nsim_leaf_tx_share_set, + .rate_leaf_tx_max_set = nsim_leaf_tx_max_set, + .rate_node_tx_share_set = nsim_node_tx_share_set, + .rate_node_tx_max_set = nsim_node_tx_max_set, + .rate_node_new = nsim_rate_node_new, + .rate_node_del = nsim_rate_node_del, + .rate_leaf_parent_set = nsim_rate_leaf_parent_set, + .rate_node_parent_set = nsim_rate_node_parent_set, + .trap_drop_counter_get = nsim_dev_devlink_trap_drop_counter_get, }; #define NSIM_DEV_MAX_MACS_DEFAULT 32 #define NSIM_DEV_TEST1_DEFAULT true -static int __nsim_dev_port_add(struct nsim_dev *nsim_dev, +static int __nsim_dev_port_add(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type, unsigned int port_index) { struct devlink_port_attrs attrs = {}; @@ -918,19 +1354,29 @@ static int __nsim_dev_port_add(struct nsim_dev *nsim_dev, struct devlink_port *devlink_port; int err; + if (type == NSIM_DEV_PORT_TYPE_VF && !nsim_dev_get_vfs(nsim_dev)) + return -EINVAL; + nsim_dev_port = kzalloc(sizeof(*nsim_dev_port), GFP_KERNEL); if (!nsim_dev_port) return -ENOMEM; - nsim_dev_port->port_index = port_index; + nsim_dev_port->port_index = nsim_dev_port_index(type, port_index); + nsim_dev_port->port_type = type; devlink_port = &nsim_dev_port->devlink_port; - attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL; - attrs.phys.port_number = port_index + 1; + if (nsim_dev_port_is_pf(nsim_dev_port)) { + attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL; + attrs.phys.port_number = port_index + 1; + } else { + attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_VF; + attrs.pci_vf.pf = 0; + attrs.pci_vf.vf = port_index; + } memcpy(attrs.switch_id.id, nsim_dev->switch_id.id, nsim_dev->switch_id.id_len); attrs.switch_id.id_len = nsim_dev->switch_id.id_len; devlink_port_attrs_set(devlink_port, &attrs); - err = devlink_port_register(priv_to_devlink(nsim_dev), devlink_port, - port_index); + err = devl_port_register(priv_to_devlink(nsim_dev), devlink_port, + nsim_dev_port->port_index); if (err) goto err_port_free; @@ -944,15 +1390,24 @@ static int __nsim_dev_port_add(struct nsim_dev *nsim_dev, goto err_port_debugfs_exit; } + if (nsim_dev_port_is_vf(nsim_dev_port)) { + err = devl_rate_leaf_create(&nsim_dev_port->devlink_port, + nsim_dev_port); + if (err) + goto err_nsim_destroy; + } + devlink_port_type_eth_set(devlink_port, nsim_dev_port->ns->netdev); list_add(&nsim_dev_port->list, &nsim_dev->port_list); return 0; +err_nsim_destroy: + nsim_destroy(nsim_dev_port->ns); err_port_debugfs_exit: nsim_dev_port_debugfs_exit(nsim_dev_port); err_dl_port_unregister: - devlink_port_unregister(devlink_port); + devl_port_unregister(devlink_port); err_port_free: kfree(nsim_dev_port); return err; @@ -963,10 +1418,12 @@ static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port) struct devlink_port *devlink_port = &nsim_dev_port->devlink_port; list_del(&nsim_dev_port->list); + if (nsim_dev_port_is_vf(nsim_dev_port)) + devl_rate_leaf_destroy(&nsim_dev_port->devlink_port); devlink_port_type_clear(devlink_port); nsim_destroy(nsim_dev_port->ns); nsim_dev_port_debugfs_exit(nsim_dev_port); - devlink_port_unregister(devlink_port); + devl_port_unregister(devlink_port); kfree(nsim_dev_port); } @@ -974,11 +1431,9 @@ static void nsim_dev_port_del_all(struct nsim_dev *nsim_dev) { struct nsim_dev_port *nsim_dev_port, *tmp; - mutex_lock(&nsim_dev->port_list_lock); list_for_each_entry_safe(nsim_dev_port, tmp, &nsim_dev->port_list, list) __nsim_dev_port_del(nsim_dev_port); - mutex_unlock(&nsim_dev->port_list_lock); } static int nsim_dev_port_add_all(struct nsim_dev *nsim_dev, @@ -987,7 +1442,7 @@ static int nsim_dev_port_add_all(struct nsim_dev *nsim_dev, int i, err; for (i = 0; i < port_count; i++) { - err = __nsim_dev_port_add(nsim_dev, i); + err = __nsim_dev_port_add(nsim_dev, NSIM_DEV_PORT_TYPE_PF, i); if (err) goto err_port_del_all; } @@ -1008,7 +1463,6 @@ static int nsim_dev_reload_create(struct nsim_dev *nsim_dev, devlink = priv_to_devlink(nsim_dev); nsim_dev = devlink_priv(devlink); INIT_LIST_HEAD(&nsim_dev->port_list); - mutex_init(&nsim_dev->port_list_lock); nsim_dev->fw_update_status = true; nsim_dev->fw_update_overwrite_mask = 0; @@ -1036,10 +1490,14 @@ static int nsim_dev_reload_create(struct nsim_dev *nsim_dev, if (err) goto err_health_exit; - err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count); + err = nsim_dev_hwstats_init(nsim_dev); if (err) goto err_psample_exit; + err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count); + if (err) + goto err_hwstats_exit; + nsim_dev->take_snapshot = debugfs_create_file("take_snapshot", 0200, nsim_dev->ddir, @@ -1047,6 +1505,8 @@ static int nsim_dev_reload_create(struct nsim_dev *nsim_dev, &nsim_dev_take_snapshot_fops); return 0; +err_hwstats_exit: + nsim_dev_hwstats_exit(nsim_dev); err_psample_exit: nsim_dev_psample_exit(nsim_dev); err_health_exit: @@ -1060,22 +1520,22 @@ err_dummy_region_exit: return err; } -int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev) +int nsim_drv_probe(struct nsim_bus_dev *nsim_bus_dev) { struct nsim_dev *nsim_dev; struct devlink *devlink; int err; - devlink = devlink_alloc(&nsim_dev_devlink_ops, sizeof(*nsim_dev)); + devlink = devlink_alloc_ns(&nsim_dev_devlink_ops, sizeof(*nsim_dev), + nsim_bus_dev->initial_net, &nsim_bus_dev->dev); if (!devlink) return -ENOMEM; - devlink_net_set(devlink, nsim_bus_dev->initial_net); + devl_lock(devlink); nsim_dev = devlink_priv(devlink); nsim_dev->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->port_list_lock); nsim_dev->fw_update_status = true; nsim_dev->fw_update_overwrite_mask = 0; nsim_dev->max_macs = NSIM_DEV_MAX_MACS_DEFAULT; @@ -1084,13 +1544,17 @@ int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev) dev_set_drvdata(&nsim_bus_dev->dev, nsim_dev); - err = nsim_dev_resources_register(devlink); - if (err) - goto err_devlink_free; + nsim_dev->vfconfigs = kcalloc(nsim_bus_dev->max_vfs, + sizeof(struct nsim_vf_config), + GFP_KERNEL | __GFP_NOWARN); + if (!nsim_dev->vfconfigs) { + err = -ENOMEM; + goto err_devlink_unlock; + } - err = devlink_register(devlink, &nsim_bus_dev->dev); + err = nsim_dev_resources_register(devlink); if (err) - goto err_resources_unregister; + goto err_vfc_free; err = devlink_params_register(devlink, nsim_devlink_params, ARRAY_SIZE(nsim_devlink_params)); @@ -1128,14 +1592,22 @@ int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev) if (err) goto err_bpf_dev_exit; - err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count); + err = nsim_dev_hwstats_init(nsim_dev); if (err) goto err_psample_exit; - devlink_params_publish(devlink); - devlink_reload_enable(devlink); + err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count); + if (err) + goto err_hwstats_exit; + + nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY; + devlink_set_features(devlink, DEVLINK_F_RELOAD); + devl_unlock(devlink); + devlink_register(devlink); return 0; +err_hwstats_exit: + nsim_dev_hwstats_exit(nsim_dev); err_psample_exit: nsim_dev_psample_exit(nsim_dev); err_bpf_dev_exit: @@ -1154,11 +1626,13 @@ err_params_unregister: devlink_params_unregister(devlink, nsim_devlink_params, ARRAY_SIZE(nsim_devlink_params)); err_dl_unregister: - devlink_unregister(devlink); -err_resources_unregister: - devlink_resources_unregister(devlink, NULL); -err_devlink_free: + devl_resources_unregister(devlink); +err_vfc_free: + kfree(nsim_dev->vfconfigs); +err_devlink_unlock: + devl_unlock(devlink); devlink_free(devlink); + dev_set_drvdata(&nsim_bus_dev->dev, NULL); return err; } @@ -1169,76 +1643,125 @@ static void nsim_dev_reload_destroy(struct nsim_dev *nsim_dev) if (devlink_is_reload_failed(devlink)) return; debugfs_remove(nsim_dev->take_snapshot); + + 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); + } + nsim_dev_port_del_all(nsim_dev); + nsim_dev_hwstats_exit(nsim_dev); nsim_dev_psample_exit(nsim_dev); nsim_dev_health_exit(nsim_dev); nsim_fib_destroy(devlink, nsim_dev->fib_data); nsim_dev_traps_exit(devlink); nsim_dev_dummy_region_exit(nsim_dev); - mutex_destroy(&nsim_dev->port_list_lock); } -void nsim_dev_remove(struct nsim_bus_dev *nsim_bus_dev) +void nsim_drv_remove(struct nsim_bus_dev *nsim_bus_dev) { struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev); struct devlink *devlink = priv_to_devlink(nsim_dev); - devlink_reload_disable(devlink); - + devlink_unregister(devlink); + devl_lock(devlink); nsim_dev_reload_destroy(nsim_dev); nsim_bpf_dev_exit(nsim_dev); nsim_dev_debugfs_exit(nsim_dev); devlink_params_unregister(devlink, nsim_devlink_params, ARRAY_SIZE(nsim_devlink_params)); - devlink_unregister(devlink); - devlink_resources_unregister(devlink, NULL); + devl_resources_unregister(devlink); + kfree(nsim_dev->vfconfigs); + devl_unlock(devlink); devlink_free(devlink); + dev_set_drvdata(&nsim_bus_dev->dev, NULL); } static struct nsim_dev_port * -__nsim_dev_port_lookup(struct nsim_dev *nsim_dev, unsigned int port_index) +__nsim_dev_port_lookup(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type, + unsigned int port_index) { struct nsim_dev_port *nsim_dev_port; + port_index = nsim_dev_port_index(type, port_index); list_for_each_entry(nsim_dev_port, &nsim_dev->port_list, list) if (nsim_dev_port->port_index == port_index) return nsim_dev_port; return NULL; } -int nsim_dev_port_add(struct nsim_bus_dev *nsim_bus_dev, +int nsim_drv_port_add(struct nsim_bus_dev *nsim_bus_dev, enum nsim_dev_port_type type, unsigned int port_index) { struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev); int err; - mutex_lock(&nsim_dev->port_list_lock); - if (__nsim_dev_port_lookup(nsim_dev, port_index)) + devl_lock(priv_to_devlink(nsim_dev)); + if (__nsim_dev_port_lookup(nsim_dev, type, port_index)) err = -EEXIST; else - err = __nsim_dev_port_add(nsim_dev, port_index); - mutex_unlock(&nsim_dev->port_list_lock); + err = __nsim_dev_port_add(nsim_dev, type, port_index); + devl_unlock(priv_to_devlink(nsim_dev)); return err; } -int nsim_dev_port_del(struct nsim_bus_dev *nsim_bus_dev, +int nsim_drv_port_del(struct nsim_bus_dev *nsim_bus_dev, enum nsim_dev_port_type type, unsigned int port_index) { struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev); struct nsim_dev_port *nsim_dev_port; int err = 0; - mutex_lock(&nsim_dev->port_list_lock); - nsim_dev_port = __nsim_dev_port_lookup(nsim_dev, port_index); + devl_lock(priv_to_devlink(nsim_dev)); + nsim_dev_port = __nsim_dev_port_lookup(nsim_dev, type, port_index); if (!nsim_dev_port) err = -ENOENT; else __nsim_dev_port_del(nsim_dev_port); - mutex_unlock(&nsim_dev->port_list_lock); + devl_unlock(priv_to_devlink(nsim_dev)); return err; } +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; + + devl_lock(devlink); + if (nsim_bus_dev->num_vfs == num_vfs) + goto exit_unlock; + if (nsim_bus_dev->num_vfs && num_vfs) { + ret = -EBUSY; + goto exit_unlock; + } + if (nsim_bus_dev->max_vfs < num_vfs) { + ret = -ENOMEM; + goto exit_unlock; + } + + nsim_bus_dev_set_vfs(nsim_bus_dev, num_vfs); + if (nsim_esw_mode_is_switchdev(nsim_dev)) { + if (num_vfs) { + ret = nsim_esw_switchdev_enable(nsim_dev, NULL); + if (ret) { + nsim_bus_dev_set_vfs(nsim_bus_dev, 0); + goto exit_unlock; + } + } else { + nsim_esw_legacy_enable(nsim_dev, NULL); + } + } + +exit_unlock: + devl_unlock(devlink); + + return ret; +} + int nsim_dev_init(void) { nsim_dev_ddir = debugfs_create_dir(DRV_NAME, NULL); |