| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * net/core/devlink.c - Network physical/parent device Netlink interface |
| * |
| * Heavily inspired by net/wireless/ |
| * Copyright (c) 2016 Mellanox Technologies. All rights reserved. |
| * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> |
| */ |
| |
| #include <linux/etherdevice.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/slab.h> |
| #include <linux/gfp.h> |
| #include <linux/device.h> |
| #include <linux/list.h> |
| #include <linux/netdevice.h> |
| #include <linux/spinlock.h> |
| #include <linux/refcount.h> |
| #include <linux/workqueue.h> |
| #include <linux/u64_stats_sync.h> |
| #include <linux/timekeeping.h> |
| #include <rdma/ib_verbs.h> |
| #include <net/netlink.h> |
| #include <net/genetlink.h> |
| #include <net/rtnetlink.h> |
| #include <net/net_namespace.h> |
| #include <net/sock.h> |
| #include <net/devlink.h> |
| #define CREATE_TRACE_POINTS |
| #include <trace/events/devlink.h> |
| |
| #define DEVLINK_RELOAD_STATS_ARRAY_SIZE \ |
| (__DEVLINK_RELOAD_LIMIT_MAX * __DEVLINK_RELOAD_ACTION_MAX) |
| |
| struct devlink_dev_stats { |
| u32 reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE]; |
| u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE]; |
| }; |
| |
| struct devlink { |
| u32 index; |
| struct list_head port_list; |
| struct list_head rate_list; |
| struct list_head sb_list; |
| struct list_head dpipe_table_list; |
| struct list_head resource_list; |
| struct list_head param_list; |
| struct list_head region_list; |
| struct list_head reporter_list; |
| struct mutex reporters_lock; /* protects reporter_list */ |
| struct devlink_dpipe_headers *dpipe_headers; |
| struct list_head trap_list; |
| struct list_head trap_group_list; |
| struct list_head trap_policer_list; |
| struct list_head linecard_list; |
| struct mutex linecards_lock; /* protects linecard_list */ |
| const struct devlink_ops *ops; |
| u64 features; |
| struct xarray snapshot_ids; |
| struct devlink_dev_stats stats; |
| struct device *dev; |
| possible_net_t _net; |
| /* Serializes access to devlink instance specific objects such as |
| * port, sb, dpipe, resource, params, region, traps and more. |
| */ |
| struct mutex lock; |
| u8 reload_failed:1; |
| refcount_t refcount; |
| struct completion comp; |
| char priv[] __aligned(NETDEV_ALIGN); |
| }; |
| |
| struct devlink_linecard_ops; |
| struct devlink_linecard_type; |
| |
| struct devlink_linecard { |
| struct list_head list; |
| struct devlink *devlink; |
| unsigned int index; |
| refcount_t refcount; |
| const struct devlink_linecard_ops *ops; |
| void *priv; |
| enum devlink_linecard_state state; |
| struct mutex state_lock; /* Protects state */ |
| const char *type; |
| struct devlink_linecard_type *types; |
| unsigned int types_count; |
| }; |
| |
| /** |
| * struct devlink_resource - devlink resource |
| * @name: name of the resource |
| * @id: id, per devlink instance |
| * @size: size of the resource |
| * @size_new: updated size of the resource, reload is needed |
| * @size_valid: valid in case the total size of the resource is valid |
| * including its children |
| * @parent: parent resource |
| * @size_params: size parameters |
| * @list: parent list |
| * @resource_list: list of child resources |
| * @occ_get: occupancy getter callback |
| * @occ_get_priv: occupancy getter callback priv |
| */ |
| struct devlink_resource { |
| const char *name; |
| u64 id; |
| u64 size; |
| u64 size_new; |
| bool size_valid; |
| struct devlink_resource *parent; |
| struct devlink_resource_size_params size_params; |
| struct list_head list; |
| struct list_head resource_list; |
| devlink_resource_occ_get_t *occ_get; |
| void *occ_get_priv; |
| }; |
| |
| void *devlink_priv(struct devlink *devlink) |
| { |
| return &devlink->priv; |
| } |
| EXPORT_SYMBOL_GPL(devlink_priv); |
| |
| struct devlink *priv_to_devlink(void *priv) |
| { |
| return container_of(priv, struct devlink, priv); |
| } |
| EXPORT_SYMBOL_GPL(priv_to_devlink); |
| |
| struct device *devlink_to_dev(const struct devlink *devlink) |
| { |
| return devlink->dev; |
| } |
| EXPORT_SYMBOL_GPL(devlink_to_dev); |
| |
| static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = { |
| { |
| .name = "destination mac", |
| .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC, |
| .bitwidth = 48, |
| }, |
| }; |
| |
| struct devlink_dpipe_header devlink_dpipe_header_ethernet = { |
| .name = "ethernet", |
| .id = DEVLINK_DPIPE_HEADER_ETHERNET, |
| .fields = devlink_dpipe_fields_ethernet, |
| .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet), |
| .global = true, |
| }; |
| EXPORT_SYMBOL_GPL(devlink_dpipe_header_ethernet); |
| |
| static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = { |
| { |
| .name = "destination ip", |
| .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP, |
| .bitwidth = 32, |
| }, |
| }; |
| |
| struct devlink_dpipe_header devlink_dpipe_header_ipv4 = { |
| .name = "ipv4", |
| .id = DEVLINK_DPIPE_HEADER_IPV4, |
| .fields = devlink_dpipe_fields_ipv4, |
| .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4), |
| .global = true, |
| }; |
| EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv4); |
| |
| static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = { |
| { |
| .name = "destination ip", |
| .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP, |
| .bitwidth = 128, |
| }, |
| }; |
| |
| struct devlink_dpipe_header devlink_dpipe_header_ipv6 = { |
| .name = "ipv6", |
| .id = DEVLINK_DPIPE_HEADER_IPV6, |
| .fields = devlink_dpipe_fields_ipv6, |
| .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6), |
| .global = true, |
| }; |
| EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv6); |
| |
| EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg); |
| EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr); |
| EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report); |
| |
| static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = { |
| [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY }, |
| [DEVLINK_PORT_FN_ATTR_STATE] = |
| NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE, |
| DEVLINK_PORT_FN_STATE_ACTIVE), |
| }; |
| |
| static DEFINE_XARRAY_FLAGS(devlinks, XA_FLAGS_ALLOC); |
| #define DEVLINK_REGISTERED XA_MARK_1 |
| |
| /* devlink instances are open to the access from the user space after |
| * devlink_register() call. Such logical barrier allows us to have certain |
| * expectations related to locking. |
| * |
| * Before *_register() - we are in initialization stage and no parallel |
| * access possible to the devlink instance. All drivers perform that phase |
| * by implicitly holding device_lock. |
| * |
| * After *_register() - users and driver can access devlink instance at |
| * the same time. |
| */ |
| #define ASSERT_DEVLINK_REGISTERED(d) \ |
| WARN_ON_ONCE(!xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED)) |
| #define ASSERT_DEVLINK_NOT_REGISTERED(d) \ |
| WARN_ON_ONCE(xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED)) |
| |
| /* devlink_mutex |
| * |
| * An overall lock guarding every operation coming from userspace. |
| * It also guards devlink devices list and it is taken when |
| * driver registers/unregisters it. |
| */ |
| static DEFINE_MUTEX(devlink_mutex); |
| |
| struct net *devlink_net(const struct devlink *devlink) |
| { |
| return read_pnet(&devlink->_net); |
| } |
| EXPORT_SYMBOL_GPL(devlink_net); |
| |
| void devlink_put(struct devlink *devlink) |
| { |
| if (refcount_dec_and_test(&devlink->refcount)) |
| complete(&devlink->comp); |
| } |
| |
| struct devlink *__must_check devlink_try_get(struct devlink *devlink) |
| { |
| if (refcount_inc_not_zero(&devlink->refcount)) |
| return devlink; |
| return NULL; |
| } |
| |
| void devl_assert_locked(struct devlink *devlink) |
| { |
| lockdep_assert_held(&devlink->lock); |
| } |
| EXPORT_SYMBOL_GPL(devl_assert_locked); |
| |
| #ifdef CONFIG_LOCKDEP |
| /* For use in conjunction with LOCKDEP only e.g. rcu_dereference_protected() */ |
| bool devl_lock_is_held(struct devlink *devlink) |
| { |
| return lockdep_is_held(&devlink->lock); |
| } |
| EXPORT_SYMBOL_GPL(devl_lock_is_held); |
| #endif |
| |
| void devl_lock(struct devlink *devlink) |
| { |
| mutex_lock(&devlink->lock); |
| } |
| EXPORT_SYMBOL_GPL(devl_lock); |
| |
| void devl_unlock(struct devlink *devlink) |
| { |
| mutex_unlock(&devlink->lock); |
| } |
| EXPORT_SYMBOL_GPL(devl_unlock); |
| |
| static struct devlink *devlink_get_from_attrs(struct net *net, |
| struct nlattr **attrs) |
| { |
| struct devlink *devlink; |
| unsigned long index; |
| bool found = false; |
| char *busname; |
| char *devname; |
| |
| if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME]) |
| return ERR_PTR(-EINVAL); |
| |
| busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]); |
| devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]); |
| |
| lockdep_assert_held(&devlink_mutex); |
| |
| xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) { |
| if (strcmp(devlink->dev->bus->name, busname) == 0 && |
| strcmp(dev_name(devlink->dev), devname) == 0 && |
| net_eq(devlink_net(devlink), net)) { |
| found = true; |
| break; |
| } |
| } |
| |
| if (!found || !devlink_try_get(devlink)) |
| devlink = ERR_PTR(-ENODEV); |
| |
| return devlink; |
| } |
| |
| static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink, |
| unsigned int port_index) |
| { |
| struct devlink_port *devlink_port; |
| |
| list_for_each_entry(devlink_port, &devlink->port_list, list) { |
| if (devlink_port->index == port_index) |
| return devlink_port; |
| } |
| return NULL; |
| } |
| |
| static bool devlink_port_index_exists(struct devlink *devlink, |
| unsigned int port_index) |
| { |
| return devlink_port_get_by_index(devlink, port_index); |
| } |
| |
| static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink, |
| struct nlattr **attrs) |
| { |
| if (attrs[DEVLINK_ATTR_PORT_INDEX]) { |
| u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]); |
| struct devlink_port *devlink_port; |
| |
| devlink_port = devlink_port_get_by_index(devlink, port_index); |
| if (!devlink_port) |
| return ERR_PTR(-ENODEV); |
| return devlink_port; |
| } |
| return ERR_PTR(-EINVAL); |
| } |
| |
| static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink, |
| struct genl_info *info) |
| { |
| return devlink_port_get_from_attrs(devlink, info->attrs); |
| } |
| |
| static inline bool |
| devlink_rate_is_leaf(struct devlink_rate *devlink_rate) |
| { |
| return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF; |
| } |
| |
| static inline bool |
| devlink_rate_is_node(struct devlink_rate *devlink_rate) |
| { |
| return devlink_rate->type == DEVLINK_RATE_TYPE_NODE; |
| } |
| |
| static struct devlink_rate * |
| devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info) |
| { |
| struct devlink_rate *devlink_rate; |
| struct devlink_port *devlink_port; |
| |
| devlink_port = devlink_port_get_from_attrs(devlink, info->attrs); |
| if (IS_ERR(devlink_port)) |
| return ERR_CAST(devlink_port); |
| devlink_rate = devlink_port->devlink_rate; |
| return devlink_rate ?: ERR_PTR(-ENODEV); |
| } |
| |
| static struct devlink_rate * |
| devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name) |
| { |
| static struct devlink_rate *devlink_rate; |
| |
| list_for_each_entry(devlink_rate, &devlink->rate_list, list) { |
| if (devlink_rate_is_node(devlink_rate) && |
| !strcmp(node_name, devlink_rate->name)) |
| return devlink_rate; |
| } |
| return ERR_PTR(-ENODEV); |
| } |
| |
| static struct devlink_rate * |
| devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs) |
| { |
| const char *rate_node_name; |
| size_t len; |
| |
| if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME]) |
| return ERR_PTR(-EINVAL); |
| rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]); |
| len = strlen(rate_node_name); |
| /* Name cannot be empty or decimal number */ |
| if (!len || strspn(rate_node_name, "0123456789") == len) |
| return ERR_PTR(-EINVAL); |
| |
| return devlink_rate_node_get_by_name(devlink, rate_node_name); |
| } |
| |
| static struct devlink_rate * |
| devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info) |
| { |
| return devlink_rate_node_get_from_attrs(devlink, info->attrs); |
| } |
| |
| static struct devlink_rate * |
| devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info) |
| { |
| struct nlattr **attrs = info->attrs; |
| |
| if (attrs[DEVLINK_ATTR_PORT_INDEX]) |
| return devlink_rate_leaf_get_from_info(devlink, info); |
| else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME]) |
| return devlink_rate_node_get_from_info(devlink, info); |
| else |
| return ERR_PTR(-EINVAL); |
| } |
| |
| static struct devlink_linecard * |
| devlink_linecard_get_by_index(struct devlink *devlink, |
| unsigned int linecard_index) |
| { |
| struct devlink_linecard *devlink_linecard; |
| |
| list_for_each_entry(devlink_linecard, &devlink->linecard_list, list) { |
| if (devlink_linecard->index == linecard_index) |
| return devlink_linecard; |
| } |
| return NULL; |
| } |
| |
| static bool devlink_linecard_index_exists(struct devlink *devlink, |
| unsigned int linecard_index) |
| { |
| return devlink_linecard_get_by_index(devlink, linecard_index); |
| } |
| |
| static struct devlink_linecard * |
| devlink_linecard_get_from_attrs(struct devlink *devlink, struct nlattr **attrs) |
| { |
| if (attrs[DEVLINK_ATTR_LINECARD_INDEX]) { |
| u32 linecard_index = nla_get_u32(attrs[DEVLINK_ATTR_LINECARD_INDEX]); |
| struct devlink_linecard *linecard; |
| |
| mutex_lock(&devlink->linecards_lock); |
| linecard = devlink_linecard_get_by_index(devlink, linecard_index); |
| if (linecard) |
| refcount_inc(&linecard->refcount); |
| mutex_unlock(&devlink->linecards_lock); |
| if (!linecard) |
| return ERR_PTR(-ENODEV); |
| return linecard; |
| } |
| return ERR_PTR(-EINVAL); |
| } |
| |
| static struct devlink_linecard * |
| devlink_linecard_get_from_info(struct devlink *devlink, struct genl_info *info) |
| { |
| return devlink_linecard_get_from_attrs(devlink, info->attrs); |
| } |
| |
| static void devlink_linecard_put(struct devlink_linecard *linecard) |
| { |
| if (refcount_dec_and_test(&linecard->refcount)) { |
| mutex_destroy(&linecard->state_lock); |
| kfree(linecard); |
| } |
| } |
| |
| struct devlink_sb { |
| struct list_head list; |
| unsigned int index; |
| u32 size; |
| u16 ingress_pools_count; |
| u16 egress_pools_count; |
| u16 ingress_tc_count; |
| u16 egress_tc_count; |
| }; |
| |
| static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb) |
| { |
| return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count; |
| } |
| |
| static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink, |
| unsigned int sb_index) |
| { |
| struct devlink_sb *devlink_sb; |
| |
| list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
| if (devlink_sb->index == sb_index) |
| return devlink_sb; |
| } |
| return NULL; |
| } |
| |
| static bool devlink_sb_index_exists(struct devlink *devlink, |
| unsigned int sb_index) |
| { |
| return devlink_sb_get_by_index(devlink, sb_index); |
| } |
| |
| static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink, |
| struct nlattr **attrs) |
| { |
| if (attrs[DEVLINK_ATTR_SB_INDEX]) { |
| u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]); |
| struct devlink_sb *devlink_sb; |
| |
| devlink_sb = devlink_sb_get_by_index(devlink, sb_index); |
| if (!devlink_sb) |
| return ERR_PTR(-ENODEV); |
| return devlink_sb; |
| } |
| return ERR_PTR(-EINVAL); |
| } |
| |
| static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink, |
| struct genl_info *info) |
| { |
| return devlink_sb_get_from_attrs(devlink, info->attrs); |
| } |
| |
| static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb, |
| struct nlattr **attrs, |
| u16 *p_pool_index) |
| { |
| u16 val; |
| |
| if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX]) |
| return -EINVAL; |
| |
| val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]); |
| if (val >= devlink_sb_pool_count(devlink_sb)) |
| return -EINVAL; |
| *p_pool_index = val; |
| return 0; |
| } |
| |
| static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb, |
| struct genl_info *info, |
| u16 *p_pool_index) |
| { |
| return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs, |
| p_pool_index); |
| } |
| |
| static int |
| devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs, |
| enum devlink_sb_pool_type *p_pool_type) |
| { |
| u8 val; |
| |
| if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE]) |
| return -EINVAL; |
| |
| val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]); |
| if (val != DEVLINK_SB_POOL_TYPE_INGRESS && |
| val != DEVLINK_SB_POOL_TYPE_EGRESS) |
| return -EINVAL; |
| *p_pool_type = val; |
| return 0; |
| } |
| |
| static int |
| devlink_sb_pool_type_get_from_info(struct genl_info *info, |
| enum devlink_sb_pool_type *p_pool_type) |
| { |
| return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type); |
| } |
| |
| static int |
| devlink_sb_th_type_get_from_attrs(struct nlattr **attrs, |
| enum devlink_sb_threshold_type *p_th_type) |
| { |
| u8 val; |
| |
| if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]) |
| return -EINVAL; |
| |
| val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]); |
| if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC && |
| val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC) |
| return -EINVAL; |
| *p_th_type = val; |
| return 0; |
| } |
| |
| static int |
| devlink_sb_th_type_get_from_info(struct genl_info *info, |
| enum devlink_sb_threshold_type *p_th_type) |
| { |
| return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type); |
| } |
| |
| static int |
| devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb, |
| struct nlattr **attrs, |
| enum devlink_sb_pool_type pool_type, |
| u16 *p_tc_index) |
| { |
| u16 val; |
| |
| if (!attrs[DEVLINK_ATTR_SB_TC_INDEX]) |
| return -EINVAL; |
| |
| val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]); |
| if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS && |
| val >= devlink_sb->ingress_tc_count) |
| return -EINVAL; |
| if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS && |
| val >= devlink_sb->egress_tc_count) |
| return -EINVAL; |
| *p_tc_index = val; |
| return 0; |
| } |
| |
| static int |
| devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb, |
| struct genl_info *info, |
| enum devlink_sb_pool_type pool_type, |
| u16 *p_tc_index) |
| { |
| return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs, |
| pool_type, p_tc_index); |
| } |
| |
| struct devlink_region { |
| struct devlink *devlink; |
| struct devlink_port *port; |
| struct list_head list; |
| union { |
| const struct devlink_region_ops *ops; |
| const struct devlink_port_region_ops *port_ops; |
| }; |
| struct list_head snapshot_list; |
| u32 max_snapshots; |
| u32 cur_snapshots; |
| u64 size; |
| }; |
| |
| struct devlink_snapshot { |
| struct list_head list; |
| struct devlink_region *region; |
| u8 *data; |
| u32 id; |
| }; |
| |
| static struct devlink_region * |
| devlink_region_get_by_name(struct devlink *devlink, const char *region_name) |
| { |
| struct devlink_region *region; |
| |
| list_for_each_entry(region, &devlink->region_list, list) |
| if (!strcmp(region->ops->name, region_name)) |
| return region; |
| |
| return NULL; |
| } |
| |
| static struct devlink_region * |
| devlink_port_region_get_by_name(struct devlink_port *port, |
| const char *region_name) |
| { |
| struct devlink_region *region; |
| |
| list_for_each_entry(region, &port->region_list, list) |
| if (!strcmp(region->ops->name, region_name)) |
| return region; |
| |
| return NULL; |
| } |
| |
| static struct devlink_snapshot * |
| devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id) |
| { |
| struct devlink_snapshot *snapshot; |
| |
| list_for_each_entry(snapshot, ®ion->snapshot_list, list) |
| if (snapshot->id == id) |
| return snapshot; |
| |
| return NULL; |
| } |
| |
| #define DEVLINK_NL_FLAG_NEED_PORT BIT(0) |
| #define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1) |
| #define DEVLINK_NL_FLAG_NEED_RATE BIT(2) |
| #define DEVLINK_NL_FLAG_NEED_RATE_NODE BIT(3) |
| #define DEVLINK_NL_FLAG_NEED_LINECARD BIT(4) |
| |
| /* The per devlink instance lock is taken by default in the pre-doit |
| * operation, yet several commands do not require this. The global |
| * devlink lock is taken and protects from disruption by user-calls. |
| */ |
| #define DEVLINK_NL_FLAG_NO_LOCK BIT(5) |
| |
| static int devlink_nl_pre_doit(const struct genl_ops *ops, |
| struct sk_buff *skb, struct genl_info *info) |
| { |
| struct devlink_linecard *linecard; |
| struct devlink_port *devlink_port; |
| struct devlink *devlink; |
| int err; |
| |
| mutex_lock(&devlink_mutex); |
| devlink = devlink_get_from_attrs(genl_info_net(info), info->attrs); |
| if (IS_ERR(devlink)) { |
| mutex_unlock(&devlink_mutex); |
| return PTR_ERR(devlink); |
| } |
| if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) |
| mutex_lock(&devlink->lock); |
| info->user_ptr[0] = devlink; |
| if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) { |
| devlink_port = devlink_port_get_from_info(devlink, info); |
| if (IS_ERR(devlink_port)) { |
| err = PTR_ERR(devlink_port); |
| goto unlock; |
| } |
| info->user_ptr[1] = devlink_port; |
| } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) { |
| devlink_port = devlink_port_get_from_info(devlink, info); |
| if (!IS_ERR(devlink_port)) |
| info->user_ptr[1] = devlink_port; |
| } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE) { |
| struct devlink_rate *devlink_rate; |
| |
| devlink_rate = devlink_rate_get_from_info(devlink, info); |
| if (IS_ERR(devlink_rate)) { |
| err = PTR_ERR(devlink_rate); |
| goto unlock; |
| } |
| info->user_ptr[1] = devlink_rate; |
| } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE_NODE) { |
| struct devlink_rate *rate_node; |
| |
| rate_node = devlink_rate_node_get_from_info(devlink, info); |
| if (IS_ERR(rate_node)) { |
| err = PTR_ERR(rate_node); |
| goto unlock; |
| } |
| info->user_ptr[1] = rate_node; |
| } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) { |
| linecard = devlink_linecard_get_from_info(devlink, info); |
| if (IS_ERR(linecard)) { |
| err = PTR_ERR(linecard); |
| goto unlock; |
| } |
| info->user_ptr[1] = linecard; |
| } |
| return 0; |
| |
| unlock: |
| if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) |
| mutex_unlock(&devlink->lock); |
| devlink_put(devlink); |
| mutex_unlock(&devlink_mutex); |
| return err; |
| } |
| |
| static void devlink_nl_post_doit(const struct genl_ops *ops, |
| struct sk_buff *skb, struct genl_info *info) |
| { |
| struct devlink_linecard *linecard; |
| struct devlink *devlink; |
| |
| devlink = info->user_ptr[0]; |
| if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) { |
| linecard = info->user_ptr[1]; |
| devlink_linecard_put(linecard); |
| } |
| if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) |
| mutex_unlock(&devlink->lock); |
| devlink_put(devlink); |
| mutex_unlock(&devlink_mutex); |
| } |
| |
| static struct genl_family devlink_nl_family; |
| |
| enum devlink_multicast_groups { |
| DEVLINK_MCGRP_CONFIG, |
| }; |
| |
| static const struct genl_multicast_group devlink_nl_mcgrps[] = { |
| [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME }, |
| }; |
| |
| static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink) |
| { |
| if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name)) |
| return -EMSGSIZE; |
| if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev))) |
| return -EMSGSIZE; |
| return 0; |
| } |
| |
| struct devlink_reload_combination { |
| enum devlink_reload_action action; |
| enum devlink_reload_limit limit; |
| }; |
| |
| static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = { |
| { |
| /* can't reinitialize driver with no down time */ |
| .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT, |
| .limit = DEVLINK_RELOAD_LIMIT_NO_RESET, |
| }, |
| }; |
| |
| static bool |
| devlink_reload_combination_is_invalid(enum devlink_reload_action action, |
| enum devlink_reload_limit limit) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) |
| if (devlink_reload_invalid_combinations[i].action == action && |
| devlink_reload_invalid_combinations[i].limit == limit) |
| return true; |
| return false; |
| } |
| |
| static bool |
| devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action) |
| { |
| return test_bit(action, &devlink->ops->reload_actions); |
| } |
| |
| static bool |
| devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit) |
| { |
| return test_bit(limit, &devlink->ops->reload_limits); |
| } |
| |
| static int devlink_reload_stat_put(struct sk_buff *msg, |
| enum devlink_reload_limit limit, u32 value) |
| { |
| struct nlattr *reload_stats_entry; |
| |
| reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY); |
| if (!reload_stats_entry) |
| return -EMSGSIZE; |
| |
| if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) || |
| nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value)) |
| goto nla_put_failure; |
| nla_nest_end(msg, reload_stats_entry); |
| return 0; |
| |
| nla_put_failure: |
| nla_nest_cancel(msg, reload_stats_entry); |
| return -EMSGSIZE; |
| } |
| |
| static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote) |
| { |
| struct nlattr *reload_stats_attr, *act_info, *act_stats; |
| int i, j, stat_idx; |
| u32 value; |
| |
| if (!is_remote) |
| reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS); |
| else |
| reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS); |
| |
| if (!reload_stats_attr) |
| return -EMSGSIZE; |
| |
| for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) { |
| if ((!is_remote && |
| !devlink_reload_action_is_supported(devlink, i)) || |
| i == DEVLINK_RELOAD_ACTION_UNSPEC) |
| continue; |
| act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO); |
| if (!act_info) |
| goto nla_put_failure; |
| |
| if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i)) |
| goto action_info_nest_cancel; |
| act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS); |
| if (!act_stats) |
| goto action_info_nest_cancel; |
| |
| for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) { |
| /* Remote stats are shown even if not locally supported. |
| * Stats of actions with unspecified limit are shown |
| * though drivers don't need to register unspecified |
| * limit. |
| */ |
| if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC && |
| !devlink_reload_limit_is_supported(devlink, j)) || |
| devlink_reload_combination_is_invalid(i, j)) |
| continue; |
| |
| stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i; |
| if (!is_remote) |
| value = devlink->stats.reload_stats[stat_idx]; |
| else |
| value = devlink->stats.remote_reload_stats[stat_idx]; |
| if (devlink_reload_stat_put(msg, j, value)) |
| goto action_stats_nest_cancel; |
| } |
| nla_nest_end(msg, act_stats); |
| nla_nest_end(msg, act_info); |
| } |
| nla_nest_end(msg, reload_stats_attr); |
| return 0; |
| |
| action_stats_nest_cancel: |
| nla_nest_cancel(msg, act_stats); |
| action_info_nest_cancel: |
| nla_nest_cancel(msg, act_info); |
| nla_put_failure: |
| nla_nest_cancel(msg, reload_stats_attr); |
| return -EMSGSIZE; |
| } |
| |
| static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink, |
| enum devlink_command cmd, u32 portid, |
| u32 seq, int flags) |
| { |
| struct nlattr *dev_stats; |
| void *hdr; |
| |
| hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); |
| if (!hdr) |
| return -EMSGSIZE; |
| |
| if (devlink_nl_put_handle(msg, devlink)) |
| goto nla_put_failure; |
| if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed)) |
| goto nla_put_failure; |
| |
| dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS); |
| if (!dev_stats) |
| goto nla_put_failure; |
| |
| if (devlink_reload_stats_put(msg, devlink, false)) |
| goto dev_stats_nest_cancel; |
| if (devlink_reload_stats_put(msg, devlink, true)) |
| goto dev_stats_nest_cancel; |
| |
| nla_nest_end(msg, dev_stats); |
| genlmsg_end(msg, hdr); |
| return 0; |
| |
| dev_stats_nest_cancel: |
| nla_nest_cancel(msg, dev_stats); |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static void devlink_notify(struct devlink *devlink, enum devlink_command cmd) |
| { |
| struct sk_buff *msg; |
| int err; |
| |
| WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL); |
| WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED)); |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return; |
| |
| err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0); |
| if (err) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), |
| msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); |
| } |
| |
| static int devlink_nl_port_attrs_put(struct sk_buff *msg, |
| struct devlink_port *devlink_port) |
| { |
| struct devlink_port_attrs *attrs = &devlink_port->attrs; |
| |
| if (!devlink_port->attrs_set) |
| return 0; |
| if (attrs->lanes) { |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes)) |
| return -EMSGSIZE; |
| } |
| if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable)) |
| return -EMSGSIZE; |
| if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour)) |
| return -EMSGSIZE; |
| switch (devlink_port->attrs.flavour) { |
| case DEVLINK_PORT_FLAVOUR_PCI_PF: |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, |
| attrs->pci_pf.controller) || |
| nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf)) |
| return -EMSGSIZE; |
| if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external)) |
| return -EMSGSIZE; |
| break; |
| case DEVLINK_PORT_FLAVOUR_PCI_VF: |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, |
| attrs->pci_vf.controller) || |
| nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) || |
| nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf)) |
| return -EMSGSIZE; |
| if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external)) |
| return -EMSGSIZE; |
| break; |
| case DEVLINK_PORT_FLAVOUR_PCI_SF: |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, |
| attrs->pci_sf.controller) || |
| nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, |
| attrs->pci_sf.pf) || |
| nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER, |
| attrs->pci_sf.sf)) |
| return -EMSGSIZE; |
| break; |
| case DEVLINK_PORT_FLAVOUR_PHYSICAL: |
| case DEVLINK_PORT_FLAVOUR_CPU: |
| case DEVLINK_PORT_FLAVOUR_DSA: |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER, |
| attrs->phys.port_number)) |
| return -EMSGSIZE; |
| if (!attrs->split) |
| return 0; |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP, |
| attrs->phys.port_number)) |
| return -EMSGSIZE; |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER, |
| attrs->phys.split_subport_number)) |
| return -EMSGSIZE; |
| break; |
| default: |
| break; |
| } |
| return 0; |
| } |
| |
| static int devlink_port_fn_hw_addr_fill(const struct devlink_ops *ops, |
| struct devlink_port *port, |
| struct sk_buff *msg, |
| struct netlink_ext_ack *extack, |
| bool *msg_updated) |
| { |
| u8 hw_addr[MAX_ADDR_LEN]; |
| int hw_addr_len; |
| int err; |
| |
| if (!ops->port_function_hw_addr_get) |
| return 0; |
| |
| err = ops->port_function_hw_addr_get(port, hw_addr, &hw_addr_len, |
| extack); |
| if (err) { |
| if (err == -EOPNOTSUPP) |
| return 0; |
| return err; |
| } |
| err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr); |
| if (err) |
| return err; |
| *msg_updated = true; |
| return 0; |
| } |
| |
| static int devlink_nl_rate_fill(struct sk_buff *msg, |
| struct devlink_rate *devlink_rate, |
| enum devlink_command cmd, u32 portid, u32 seq, |
| int flags, struct netlink_ext_ack *extack) |
| { |
| struct devlink *devlink = devlink_rate->devlink; |
| void *hdr; |
| |
| hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); |
| if (!hdr) |
| return -EMSGSIZE; |
| |
| if (devlink_nl_put_handle(msg, devlink)) |
| goto nla_put_failure; |
| |
| if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type)) |
| goto nla_put_failure; |
| |
| if (devlink_rate_is_leaf(devlink_rate)) { |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, |
| devlink_rate->devlink_port->index)) |
| goto nla_put_failure; |
| } else if (devlink_rate_is_node(devlink_rate)) { |
| if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME, |
| devlink_rate->name)) |
| goto nla_put_failure; |
| } |
| |
| if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE, |
| devlink_rate->tx_share, DEVLINK_ATTR_PAD)) |
| goto nla_put_failure; |
| |
| if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX, |
| devlink_rate->tx_max, DEVLINK_ATTR_PAD)) |
| goto nla_put_failure; |
| |
| if (devlink_rate->parent) |
| if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME, |
| devlink_rate->parent->name)) |
| goto nla_put_failure; |
| |
| genlmsg_end(msg, hdr); |
| return 0; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static bool |
| devlink_port_fn_state_valid(enum devlink_port_fn_state state) |
| { |
| return state == DEVLINK_PORT_FN_STATE_INACTIVE || |
| state == DEVLINK_PORT_FN_STATE_ACTIVE; |
| } |
| |
| static bool |
| devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate) |
| { |
| return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED || |
| opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED; |
| } |
| |
| static int devlink_port_fn_state_fill(const struct devlink_ops *ops, |
| struct devlink_port *port, |
| struct sk_buff *msg, |
| struct netlink_ext_ack *extack, |
| bool *msg_updated) |
| { |
| enum devlink_port_fn_opstate opstate; |
| enum devlink_port_fn_state state; |
| int err; |
| |
| if (!ops->port_fn_state_get) |
| return 0; |
| |
| err = ops->port_fn_state_get(port, &state, &opstate, extack); |
| if (err) { |
| if (err == -EOPNOTSUPP) |
| return 0; |
| return err; |
| } |
| if (!devlink_port_fn_state_valid(state)) { |
| WARN_ON_ONCE(1); |
| NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver"); |
| return -EINVAL; |
| } |
| if (!devlink_port_fn_opstate_valid(opstate)) { |
| WARN_ON_ONCE(1); |
| NL_SET_ERR_MSG_MOD(extack, |
| "Invalid operational state read from driver"); |
| return -EINVAL; |
| } |
| if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) || |
| nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate)) |
| return -EMSGSIZE; |
| *msg_updated = true; |
| return 0; |
| } |
| |
| static int |
| devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port, |
| struct netlink_ext_ack *extack) |
| { |
| const struct devlink_ops *ops; |
| struct nlattr *function_attr; |
| bool msg_updated = false; |
| int err; |
| |
| function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION); |
| if (!function_attr) |
| return -EMSGSIZE; |
| |
| ops = port->devlink->ops; |
| err = devlink_port_fn_hw_addr_fill(ops, port, msg, extack, |
| &msg_updated); |
| if (err) |
| goto out; |
| err = devlink_port_fn_state_fill(ops, port, msg, extack, &msg_updated); |
| out: |
| if (err || !msg_updated) |
| nla_nest_cancel(msg, function_attr); |
| else |
| nla_nest_end(msg, function_attr); |
| return err; |
| } |
| |
| static int devlink_nl_port_fill(struct sk_buff *msg, |
| struct devlink_port *devlink_port, |
| enum devlink_command cmd, u32 portid, u32 seq, |
| int flags, struct netlink_ext_ack *extack) |
| { |
| struct devlink *devlink = devlink_port->devlink; |
| void *hdr; |
| |
| hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); |
| if (!hdr) |
| return -EMSGSIZE; |
| |
| if (devlink_nl_put_handle(msg, devlink)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) |
| goto nla_put_failure; |
| |
| /* Hold rtnl lock while accessing port's netdev attributes. */ |
| rtnl_lock(); |
| spin_lock_bh(&devlink_port->type_lock); |
| if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type)) |
| goto nla_put_failure_type_locked; |
| if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET && |
| nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE, |
| devlink_port->desired_type)) |
| goto nla_put_failure_type_locked; |
| if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) { |
| struct net *net = devlink_net(devlink_port->devlink); |
| struct net_device *netdev = devlink_port->type_dev; |
| |
| if (netdev && net_eq(net, dev_net(netdev)) && |
| (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX, |
| netdev->ifindex) || |
| nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME, |
| netdev->name))) |
| goto nla_put_failure_type_locked; |
| } |
| if (devlink_port->type == DEVLINK_PORT_TYPE_IB) { |
| struct ib_device *ibdev = devlink_port->type_dev; |
| |
| if (ibdev && |
| nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME, |
| ibdev->name)) |
| goto nla_put_failure_type_locked; |
| } |
| spin_unlock_bh(&devlink_port->type_lock); |
| rtnl_unlock(); |
| if (devlink_nl_port_attrs_put(msg, devlink_port)) |
| goto nla_put_failure; |
| if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack)) |
| goto nla_put_failure; |
| if (devlink_port->linecard && |
| nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX, |
| devlink_port->linecard->index)) |
| goto nla_put_failure; |
| |
| genlmsg_end(msg, hdr); |
| return 0; |
| |
| nla_put_failure_type_locked: |
| spin_unlock_bh(&devlink_port->type_lock); |
| rtnl_unlock(); |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static void devlink_port_notify(struct devlink_port *devlink_port, |
| enum devlink_command cmd) |
| { |
| struct devlink *devlink = devlink_port->devlink; |
| struct sk_buff *msg; |
| int err; |
| |
| WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL); |
| |
| if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED)) |
| return; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return; |
| |
| err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL); |
| if (err) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg, |
| 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); |
| } |
| |
| static void devlink_rate_notify(struct devlink_rate *devlink_rate, |
| enum devlink_command cmd) |
| { |
| struct devlink *devlink = devlink_rate->devlink; |
| struct sk_buff *msg; |
| int err; |
| |
| WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL); |
| |
| if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED)) |
| return; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return; |
| |
| err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL); |
| if (err) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg, |
| 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); |
| } |
| |
| static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg, |
| struct netlink_callback *cb) |
| { |
| struct devlink_rate *devlink_rate; |
| struct devlink *devlink; |
| int start = cb->args[0]; |
| unsigned long index; |
| int idx = 0; |
| int err = 0; |
| |
| mutex_lock(&devlink_mutex); |
| xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) { |
| if (!devlink_try_get(devlink)) |
| continue; |
| |
| if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) |
| goto retry; |
| |
| mutex_lock(&devlink->lock); |
| list_for_each_entry(devlink_rate, &devlink->rate_list, list) { |
| enum devlink_command cmd = DEVLINK_CMD_RATE_NEW; |
| u32 id = NETLINK_CB(cb->skb).portid; |
| |
| if (idx < start) { |
| idx++; |
| continue; |
| } |
| err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id, |
| cb->nlh->nlmsg_seq, |
| NLM_F_MULTI, NULL); |
| if (err) { |
| mutex_unlock(&devlink->lock); |
| devlink_put(devlink); |
| goto out; |
| } |
| idx++; |
| } |
| mutex_unlock(&devlink->lock); |
| retry: |
| devlink_put(devlink); |
| } |
| out: |
| mutex_unlock(&devlink_mutex); |
| if (err != -EMSGSIZE) |
| return err; |
| |
| cb->args[0] = idx; |
| return msg->len; |
| } |
| |
| static int devlink_nl_cmd_rate_get_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink_rate *devlink_rate = info->user_ptr[1]; |
| struct sk_buff *msg; |
| int err; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW, |
| info->snd_portid, info->snd_seq, 0, |
| info->extack); |
| if (err) { |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| return genlmsg_reply(msg, info); |
| } |
| |
| static bool |
| devlink_rate_is_parent_node(struct devlink_rate *devlink_rate, |
| struct devlink_rate *parent) |
| { |
| while (parent) { |
| if (parent == devlink_rate) |
| return true; |
| parent = parent->parent; |
| } |
| return false; |
| } |
| |
| static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct devlink *devlink = info->user_ptr[0]; |
| struct sk_buff *msg; |
| int err; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW, |
| info->snd_portid, info->snd_seq, 0); |
| if (err) { |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| return genlmsg_reply(msg, info); |
| } |
| |
| static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg, |
| struct netlink_callback *cb) |
| { |
| struct devlink *devlink; |
| int start = cb->args[0]; |
| unsigned long index; |
| int idx = 0; |
| int err; |
| |
| mutex_lock(&devlink_mutex); |
| xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) { |
| if (!devlink_try_get(devlink)) |
| continue; |
| |
| if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) { |
| devlink_put(devlink); |
| continue; |
| } |
| |
| if (idx < start) { |
| idx++; |
| devlink_put(devlink); |
| continue; |
| } |
| |
| err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW, |
| NETLINK_CB(cb->skb).portid, |
| cb->nlh->nlmsg_seq, NLM_F_MULTI); |
| devlink_put(devlink); |
| if (err) |
| goto out; |
| idx++; |
| } |
| out: |
| mutex_unlock(&devlink_mutex); |
| |
| cb->args[0] = idx; |
| return msg->len; |
| } |
| |
| static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink_port *devlink_port = info->user_ptr[1]; |
| struct sk_buff *msg; |
| int err; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW, |
| info->snd_portid, info->snd_seq, 0, |
| info->extack); |
| if (err) { |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| return genlmsg_reply(msg, info); |
| } |
| |
| static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg, |
| struct netlink_callback *cb) |
| { |
| struct devlink *devlink; |
| struct devlink_port *devlink_port; |
| int start = cb->args[0]; |
| unsigned long index; |
| int idx = 0; |
| int err; |
| |
| mutex_lock(&devlink_mutex); |
| xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) { |
| if (!devlink_try_get(devlink)) |
| continue; |
| |
| if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) |
| goto retry; |
| |
| mutex_lock(&devlink->lock); |
| list_for_each_entry(devlink_port, &devlink->port_list, list) { |
| if (idx < start) { |
| idx++; |
| continue; |
| } |
| err = devlink_nl_port_fill(msg, devlink_port, |
| DEVLINK_CMD_NEW, |
| NETLINK_CB(cb->skb).portid, |
| cb->nlh->nlmsg_seq, |
| NLM_F_MULTI, cb->extack); |
| if (err) { |
| mutex_unlock(&devlink->lock); |
| devlink_put(devlink); |
| goto out; |
| } |
| idx++; |
| } |
| mutex_unlock(&devlink->lock); |
| retry: |
| devlink_put(devlink); |
| } |
| out: |
| mutex_unlock(&devlink_mutex); |
| |
| cb->args[0] = idx; |
| return msg->len; |
| } |
| |
| static int devlink_port_type_set(struct devlink_port *devlink_port, |
| enum devlink_port_type port_type) |
| |
| { |
| int err; |
| |
| if (!devlink_port->devlink->ops->port_type_set) |
| return -EOPNOTSUPP; |
| |
| if (port_type == devlink_port->type) |
| return 0; |
| |
| err = devlink_port->devlink->ops->port_type_set(devlink_port, |
| port_type); |
| if (err) |
| return err; |
| |
| devlink_port->desired_type = port_type; |
| devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); |
| return 0; |
| } |
| |
| static int devlink_port_function_hw_addr_set(struct devlink_port *port, |
| const struct nlattr *attr, |
| struct netlink_ext_ack *extack) |
| { |
| const struct devlink_ops *ops = port->devlink->ops; |
| const u8 *hw_addr; |
| int hw_addr_len; |
| |
| hw_addr = nla_data(attr); |
| hw_addr_len = nla_len(attr); |
| if (hw_addr_len > MAX_ADDR_LEN) { |
| NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long"); |
| return -EINVAL; |
| } |
| if (port->type == DEVLINK_PORT_TYPE_ETH) { |
| if (hw_addr_len != ETH_ALEN) { |
| NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device"); |
| return -EINVAL; |
| } |
| if (!is_unicast_ether_addr(hw_addr)) { |
| NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported"); |
| return -EINVAL; |
| } |
| } |
| |
| if (!ops->port_function_hw_addr_set) { |
| NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes"); |
| return -EOPNOTSUPP; |
| } |
| |
| return ops->port_function_hw_addr_set(port, hw_addr, hw_addr_len, |
| extack); |
| } |
| |
| static int devlink_port_fn_state_set(struct devlink_port *port, |
| const struct nlattr *attr, |
| struct netlink_ext_ack *extack) |
| { |
| enum devlink_port_fn_state state; |
| const struct devlink_ops *ops; |
| |
| state = nla_get_u8(attr); |
| ops = port->devlink->ops; |
| if (!ops->port_fn_state_set) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Function does not support state setting"); |
| return -EOPNOTSUPP; |
| } |
| return ops->port_fn_state_set(port, state, extack); |
| } |
| |
| static int devlink_port_function_set(struct devlink_port *port, |
| const struct nlattr *attr, |
| struct netlink_ext_ack *extack) |
| { |
| struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1]; |
| int err; |
| |
| err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr, |
| devlink_function_nl_policy, extack); |
| if (err < 0) { |
| NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes"); |
| return err; |
| } |
| |
| attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR]; |
| if (attr) { |
| err = devlink_port_function_hw_addr_set(port, attr, extack); |
| if (err) |
| return err; |
| } |
| /* Keep this as the last function attribute set, so that when |
| * multiple port function attributes are set along with state, |
| * Those can be applied first before activating the state. |
| */ |
| attr = tb[DEVLINK_PORT_FN_ATTR_STATE]; |
| if (attr) |
| err = devlink_port_fn_state_set(port, attr, extack); |
| |
| if (!err) |
| devlink_port_notify(port, DEVLINK_CMD_PORT_NEW); |
| return err; |
| } |
| |
| static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink_port *devlink_port = info->user_ptr[1]; |
| int err; |
| |
| if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) { |
| enum devlink_port_type port_type; |
| |
| port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]); |
| err = devlink_port_type_set(devlink_port, port_type); |
| if (err) |
| return err; |
| } |
| |
| if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) { |
| struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION]; |
| struct netlink_ext_ack *extack = info->extack; |
| |
| err = devlink_port_function_set(devlink_port, attr, extack); |
| if (err) |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink_port *devlink_port = info->user_ptr[1]; |
| struct devlink *devlink = info->user_ptr[0]; |
| u32 count; |
| |
| if (!info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]) |
| return -EINVAL; |
| if (!devlink->ops->port_split) |
| return -EOPNOTSUPP; |
| |
| count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]); |
| |
| if (!devlink_port->attrs.splittable) { |
| /* Split ports cannot be split. */ |
| if (devlink_port->attrs.split) |
| NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further"); |
| else |
| NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split"); |
| return -EINVAL; |
| } |
| |
| if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) { |
| NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count"); |
| return -EINVAL; |
| } |
| |
| return devlink->ops->port_split(devlink, devlink_port, count, |
| info->extack); |
| } |
| |
| static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink_port *devlink_port = info->user_ptr[1]; |
| struct devlink *devlink = info->user_ptr[0]; |
| |
| if (!devlink->ops->port_unsplit) |
| return -EOPNOTSUPP; |
| return devlink->ops->port_unsplit(devlink, devlink_port, info->extack); |
| } |
| |
| static int devlink_port_new_notifiy(struct devlink *devlink, |
| unsigned int port_index, |
| struct genl_info *info) |
| { |
| struct devlink_port *devlink_port; |
| struct sk_buff *msg; |
| int err; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| mutex_lock(&devlink->lock); |
| devlink_port = devlink_port_get_by_index(devlink, port_index); |
| if (!devlink_port) { |
| err = -ENODEV; |
| goto out; |
| } |
| |
| err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW, |
| info->snd_portid, info->snd_seq, 0, NULL); |
| if (err) |
| goto out; |
| |
| err = genlmsg_reply(msg, info); |
| mutex_unlock(&devlink->lock); |
| return err; |
| |
| out: |
| mutex_unlock(&devlink->lock); |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct netlink_ext_ack *extack = info->extack; |
| struct devlink_port_new_attrs new_attrs = {}; |
| struct devlink *devlink = info->user_ptr[0]; |
| unsigned int new_port_index; |
| int err; |
| |
| if (!devlink->ops->port_new || !devlink->ops->port_del) |
| return -EOPNOTSUPP; |
| |
| if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] || |
| !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) { |
| NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified"); |
| return -EINVAL; |
| } |
| new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]); |
| new_attrs.pfnum = |
| nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]); |
| |
| if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) { |
| /* Port index of the new port being created by driver. */ |
| new_attrs.port_index = |
| nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); |
| new_attrs.port_index_valid = true; |
| } |
| if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) { |
| new_attrs.controller = |
| nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]); |
| new_attrs.controller_valid = true; |
| } |
| if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF && |
| info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) { |
| new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]); |
| new_attrs.sfnum_valid = true; |
| } |
| |
| err = devlink->ops->port_new(devlink, &new_attrs, extack, |
| &new_port_index); |
| if (err) |
| return err; |
| |
| err = devlink_port_new_notifiy(devlink, new_port_index, info); |
| if (err && err != -ENODEV) { |
| /* Fail to send the response; destroy newly created port. */ |
| devlink->ops->port_del(devlink, new_port_index, extack); |
| } |
| return err; |
| } |
| |
| static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct netlink_ext_ack *extack = info->extack; |
| struct devlink *devlink = info->user_ptr[0]; |
| unsigned int port_index; |
| |
| if (!devlink->ops->port_del) |
| return -EOPNOTSUPP; |
| |
| if (!info->attrs[DEVLINK_ATTR_PORT_INDEX]) { |
| NL_SET_ERR_MSG_MOD(extack, "Port index is not specified"); |
| return -EINVAL; |
| } |
| port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); |
| |
| return devlink->ops->port_del(devlink, port_index, extack); |
| } |
| |
| static int |
| devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate, |
| struct genl_info *info, |
| struct nlattr *nla_parent) |
| { |
| struct devlink *devlink = devlink_rate->devlink; |
| const char *parent_name = nla_data(nla_parent); |
| const struct devlink_ops *ops = devlink->ops; |
| size_t len = strlen(parent_name); |
| struct devlink_rate *parent; |
| int err = -EOPNOTSUPP; |
| |
| parent = devlink_rate->parent; |
| if (parent && len) { |
| NL_SET_ERR_MSG_MOD(info->extack, "Rate object already has parent."); |
| return -EBUSY; |
| } else if (parent && !len) { |
| if (devlink_rate_is_leaf(devlink_rate)) |
| err = ops->rate_leaf_parent_set(devlink_rate, NULL, |
| devlink_rate->priv, NULL, |
| info->extack); |
| else if (devlink_rate_is_node(devlink_rate)) |
| err = ops->rate_node_parent_set(devlink_rate, NULL, |
| devlink_rate->priv, NULL, |
| info->extack); |
| if (err) |
| return err; |
| |
| refcount_dec(&parent->refcnt); |
| devlink_rate->parent = NULL; |
| } else if (!parent && len) { |
| parent = devlink_rate_node_get_by_name(devlink, parent_name); |
| if (IS_ERR(parent)) |
| return -ENODEV; |
| |
| if (parent == devlink_rate) { |
| NL_SET_ERR_MSG_MOD(info->extack, "Parent to self is not allowed"); |
| return -EINVAL; |
| } |
| |
| if (devlink_rate_is_node(devlink_rate) && |
| devlink_rate_is_parent_node(devlink_rate, parent->parent)) { |
| NL_SET_ERR_MSG_MOD(info->extack, "Node is already a parent of parent node."); |
| return -EEXIST; |
| } |
| |
| if (devlink_rate_is_leaf(devlink_rate)) |
| err = ops->rate_leaf_parent_set(devlink_rate, parent, |
| devlink_rate->priv, parent->priv, |
| info->extack); |
| else if (devlink_rate_is_node(devlink_rate)) |
| err = ops->rate_node_parent_set(devlink_rate, parent, |
| devlink_rate->priv, parent->priv, |
| info->extack); |
| if (err) |
| return err; |
| |
| refcount_inc(&parent->refcnt); |
| devlink_rate->parent = parent; |
| } |
| |
| return 0; |
| } |
| |
| static int devlink_nl_rate_set(struct devlink_rate *devlink_rate, |
| const struct devlink_ops *ops, |
| struct genl_info *info) |
| { |
| struct nlattr *nla_parent, **attrs = info->attrs; |
| int err = -EOPNOTSUPP; |
| u64 rate; |
| |
| if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) { |
| rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]); |
| if (devlink_rate_is_leaf(devlink_rate)) |
| err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv, |
| rate, info->extack); |
| else if (devlink_rate_is_node(devlink_rate)) |
| err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv, |
| rate, info->extack); |
| if (err) |
| return err; |
| devlink_rate->tx_share = rate; |
| } |
| |
| if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) { |
| rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]); |
| if (devlink_rate_is_leaf(devlink_rate)) |
| err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv, |
| rate, info->extack); |
| else if (devlink_rate_is_node(devlink_rate)) |
| err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv, |
| rate, info->extack); |
| if (err) |
| return err; |
| devlink_rate->tx_max = rate; |
| } |
| |
| nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME]; |
| if (nla_parent) { |
| err = devlink_nl_rate_parent_node_set(devlink_rate, info, |
| nla_parent); |
| if (err) |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops, |
| struct genl_info *info, |
| enum devlink_rate_type type) |
| { |
| struct nlattr **attrs = info->attrs; |
| |
| if (type == DEVLINK_RATE_TYPE_LEAF) { |
| if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) { |
| NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the leafs"); |
| return false; |
| } |
| if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) { |
| NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the leafs"); |
| return false; |
| } |
| if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] && |
| !ops->rate_leaf_parent_set) { |
| NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the leafs"); |
| return false; |
| } |
| } else if (type == DEVLINK_RATE_TYPE_NODE) { |
| if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) { |
| NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the nodes"); |
| return false; |
| } |
| if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) { |
| NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the nodes"); |
| return false; |
| } |
| if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] && |
| !ops->rate_node_parent_set) { |
| NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the nodes"); |
| return false; |
| } |
| } else { |
| WARN(1, "Unknown type of rate object"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink_rate *devlink_rate = info->user_ptr[1]; |
| struct devlink *devlink = devlink_rate->devlink; |
| const struct devlink_ops *ops = devlink->ops; |
| int err; |
| |
| if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type)) |
| return -EOPNOTSUPP; |
| |
| err = devlink_nl_rate_set(devlink_rate, ops, info); |
| |
| if (!err) |
| devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW); |
| return err; |
| } |
| |
| static int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink *devlink = info->user_ptr[0]; |
| struct devlink_rate *rate_node; |
| const struct devlink_ops *ops; |
| int err; |
| |
| ops = devlink->ops; |
| if (!ops || !ops->rate_node_new || !ops->rate_node_del) { |
| NL_SET_ERR_MSG_MOD(info->extack, "Rate nodes aren't supported"); |
| return -EOPNOTSUPP; |
| } |
| |
| if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE)) |
| return -EOPNOTSUPP; |
| |
| rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs); |
| if (!IS_ERR(rate_node)) |
| return -EEXIST; |
| else if (rate_node == ERR_PTR(-EINVAL)) |
| return -EINVAL; |
| |
| rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL); |
| if (!rate_node) |
| return -ENOMEM; |
| |
| rate_node->devlink = devlink; |
| rate_node->type = DEVLINK_RATE_TYPE_NODE; |
| rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL); |
| if (!rate_node->name) { |
| err = -ENOMEM; |
| goto err_strdup; |
| } |
| |
| err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack); |
| if (err) |
| goto err_node_new; |
| |
| err = devlink_nl_rate_set(rate_node, ops, info); |
| if (err) |
| goto err_rate_set; |
| |
| refcount_set(&rate_node->refcnt, 1); |
| list_add(&rate_node->list, &devlink->rate_list); |
| devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW); |
| return 0; |
| |
| err_rate_set: |
| ops->rate_node_del(rate_node, rate_node->priv, info->extack); |
| err_node_new: |
| kfree(rate_node->name); |
| err_strdup: |
| kfree(rate_node); |
| return err; |
| } |
| |
| static int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink_rate *rate_node = info->user_ptr[1]; |
| struct devlink *devlink = rate_node->devlink; |
| const struct devlink_ops *ops = devlink->ops; |
| int err; |
| |
| if (refcount_read(&rate_node->refcnt) > 1) { |
| NL_SET_ERR_MSG_MOD(info->extack, "Node has children. Cannot delete node."); |
| return -EBUSY; |
| } |
| |
| devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL); |
| err = ops->rate_node_del(rate_node, rate_node->priv, info->extack); |
| if (rate_node->parent) |
| refcount_dec(&rate_node->parent->refcnt); |
| list_del(&rate_node->list); |
| kfree(rate_node->name); |
| kfree(rate_node); |
| return err; |
| } |
| |
| struct devlink_linecard_type { |
| const char *type; |
| const void *priv; |
| }; |
| |
| static int devlink_nl_linecard_fill(struct sk_buff *msg, |
| struct devlink *devlink, |
| struct devlink_linecard *linecard, |
| enum devlink_command cmd, u32 portid, |
| u32 seq, int flags, |
| struct netlink_ext_ack *extack) |
| { |
| struct devlink_linecard_type *linecard_type; |
| struct nlattr *attr; |
| void *hdr; |
| int i; |
| |
| hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); |
| if (!hdr) |
| return -EMSGSIZE; |
| |
| if (devlink_nl_put_handle(msg, devlink)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX, linecard->index)) |
| goto nla_put_failure; |
| if (nla_put_u8(msg, DEVLINK_ATTR_LINECARD_STATE, linecard->state)) |
| goto nla_put_failure; |
| if (linecard->type && |
| nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE, linecard->type)) |
| goto nla_put_failure; |
| |
| if (linecard->types_count) { |
| attr = nla_nest_start(msg, |
| DEVLINK_ATTR_LINECARD_SUPPORTED_TYPES); |
| if (!attr) |
| goto nla_put_failure; |
| for (i = 0; i < linecard->types_count; i++) { |
| linecard_type = &linecard->types[i]; |
| if (nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE, |
| linecard_type->type)) { |
| nla_nest_cancel(msg, attr); |
| goto nla_put_failure; |
| } |
| } |
| nla_nest_end(msg, attr); |
| } |
| |
| genlmsg_end(msg, hdr); |
| return 0; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static void devlink_linecard_notify(struct devlink_linecard *linecard, |
| enum devlink_command cmd) |
| { |
| struct devlink *devlink = linecard->devlink; |
| struct sk_buff *msg; |
| int err; |
| |
| WARN_ON(cmd != DEVLINK_CMD_LINECARD_NEW && |
| cmd != DEVLINK_CMD_LINECARD_DEL); |
| |
| if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED)) |
| return; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return; |
| |
| err = devlink_nl_linecard_fill(msg, devlink, linecard, cmd, 0, 0, 0, |
| NULL); |
| if (err) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), |
| msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); |
| } |
| |
| static int devlink_nl_cmd_linecard_get_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink_linecard *linecard = info->user_ptr[1]; |
| struct devlink *devlink = linecard->devlink; |
| struct sk_buff *msg; |
| int err; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| mutex_lock(&linecard->state_lock); |
| err = devlink_nl_linecard_fill(msg, devlink, linecard, |
| DEVLINK_CMD_LINECARD_NEW, |
| info->snd_portid, info->snd_seq, 0, |
| info->extack); |
| mutex_unlock(&linecard->state_lock); |
| if (err) { |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| return genlmsg_reply(msg, info); |
| } |
| |
| static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg, |
| struct netlink_callback *cb) |
| { |
| struct devlink_linecard *linecard; |
| struct devlink *devlink; |
| int start = cb->args[0]; |
| unsigned long index; |
| int idx = 0; |
| int err; |
| |
| mutex_lock(&devlink_mutex); |
| xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) { |
| if (!devlink_try_get(devlink)) |
| continue; |
| |
| if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) |
| goto retry; |
| |
| mutex_lock(&devlink->linecards_lock); |
| list_for_each_entry(linecard, &devlink->linecard_list, list) { |
| if (idx < start) { |
| idx++; |
| continue; |
| } |
| mutex_lock(&linecard->state_lock); |
| err = devlink_nl_linecard_fill(msg, devlink, linecard, |
| DEVLINK_CMD_LINECARD_NEW, |
| NETLINK_CB(cb->skb).portid, |
| cb->nlh->nlmsg_seq, |
| NLM_F_MULTI, |
| cb->extack); |
| mutex_unlock(&linecard->state_lock); |
| if (err) { |
| mutex_unlock(&devlink->linecards_lock); |
| devlink_put(devlink); |
| goto out; |
| } |
| idx++; |
| } |
| mutex_unlock(&devlink->linecards_lock); |
| retry: |
| devlink_put(devlink); |
| } |
| out: |
| mutex_unlock(&devlink_mutex); |
| |
| cb->args[0] = idx; |
| return msg->len; |
| } |
| |
| static struct devlink_linecard_type * |
| devlink_linecard_type_lookup(struct devlink_linecard *linecard, |
| const char *type) |
| { |
| struct devlink_linecard_type *linecard_type; |
| int i; |
| |
| for (i = 0; i < linecard->types_count; i++) { |
| linecard_type = &linecard->types[i]; |
| if (!strcmp(type, linecard_type->type)) |
| return linecard_type; |
| } |
| return NULL; |
| } |
| |
| static int devlink_linecard_type_set(struct devlink_linecard *linecard, |
| const char *type, |
| struct netlink_ext_ack *extack) |
| { |
| const struct devlink_linecard_ops *ops = linecard->ops; |
| struct devlink_linecard_type *linecard_type; |
| int err; |
| |
| mutex_lock(&linecard->state_lock); |
| if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) { |
| NL_SET_ERR_MSG_MOD(extack, "Line card is currently being provisioned"); |
| err = -EBUSY; |
| goto out; |
| } |
| if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) { |
| NL_SET_ERR_MSG_MOD(extack, "Line card is currently being unprovisioned"); |
| err = -EBUSY; |
| goto out; |
| } |
| |
| linecard_type = devlink_linecard_type_lookup(linecard, type); |
| if (!linecard_type) { |
| NL_SET_ERR_MSG_MOD(extack, "Unsupported line card type provided"); |
| err = -EINVAL; |
| goto out; |
| } |
| |
| if (linecard->state != DEVLINK_LINECARD_STATE_UNPROVISIONED && |
| linecard->state != DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) { |
| NL_SET_ERR_MSG_MOD(extack, "Line card already provisioned"); |
| err = -EBUSY; |
| /* Check if the line card is provisioned in the same |
| * way the user asks. In case it is, make the operation |
| * to return success. |
| */ |
| if (ops->same_provision && |
| ops->same_provision(linecard, linecard->priv, |
| linecard_type->type, |
| linecard_type->priv)) |
| err = 0; |
| goto out; |
| } |
| |
| linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING; |
| linecard->type = linecard_type->type; |
| devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| mutex_unlock(&linecard->state_lock); |
| err = ops->provision(linecard, linecard->priv, linecard_type->type, |
| linecard_type->priv, extack); |
| if (err) { |
| /* Provisioning failed. Assume the linecard is unprovisioned |
| * for future operations. |
| */ |
| mutex_lock(&linecard->state_lock); |
| linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED; |
| linecard->type = NULL; |
| devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| mutex_unlock(&linecard->state_lock); |
| } |
| return err; |
| |
| out: |
| mutex_unlock(&linecard->state_lock); |
| return err; |
| } |
| |
| static int devlink_linecard_type_unset(struct devlink_linecard *linecard, |
| struct netlink_ext_ack *extack) |
| { |
| int err; |
| |
| mutex_lock(&linecard->state_lock); |
| if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) { |
| NL_SET_ERR_MSG_MOD(extack, "Line card is currently being provisioned"); |
| err = -EBUSY; |
| goto out; |
| } |
| if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) { |
| NL_SET_ERR_MSG_MOD(extack, "Line card is currently being unprovisioned"); |
| err = -EBUSY; |
| goto out; |
| } |
| if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) { |
| linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED; |
| linecard->type = NULL; |
| devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| err = 0; |
| goto out; |
| } |
| |
| if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONED) { |
| NL_SET_ERR_MSG_MOD(extack, "Line card is not provisioned"); |
| err = 0; |
| goto out; |
| } |
| linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONING; |
| devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| mutex_unlock(&linecard->state_lock); |
| err = linecard->ops->unprovision(linecard, linecard->priv, |
| extack); |
| if (err) { |
| /* Unprovisioning failed. Assume the linecard is unprovisioned |
| * for future operations. |
| */ |
| mutex_lock(&linecard->state_lock); |
| linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED; |
| linecard->type = NULL; |
| devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| mutex_unlock(&linecard->state_lock); |
| } |
| return err; |
| |
| out: |
| mutex_unlock(&linecard->state_lock); |
| return err; |
| } |
| |
| static int devlink_nl_cmd_linecard_set_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink_linecard *linecard = info->user_ptr[1]; |
| struct netlink_ext_ack *extack = info->extack; |
| int err; |
| |
| if (info->attrs[DEVLINK_ATTR_LINECARD_TYPE]) { |
| const char *type; |
| |
| type = nla_data(info->attrs[DEVLINK_ATTR_LINECARD_TYPE]); |
| if (strcmp(type, "")) { |
| err = devlink_linecard_type_set(linecard, type, extack); |
| if (err) |
| return err; |
| } else { |
| err = devlink_linecard_type_unset(linecard, extack); |
| if (err) |
| return err; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink, |
| struct devlink_sb *devlink_sb, |
| enum devlink_command cmd, u32 portid, |
| u32 seq, int flags) |
| { |
| void *hdr; |
| |
| hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); |
| if (!hdr) |
| return -EMSGSIZE; |
| |
| if (devlink_nl_put_handle(msg, devlink)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size)) |
| goto nla_put_failure; |
| if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT, |
| devlink_sb->ingress_pools_count)) |
| goto nla_put_failure; |
| if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT, |
| devlink_sb->egress_pools_count)) |
| goto nla_put_failure; |
| if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT, |
| devlink_sb->ingress_tc_count)) |
| goto nla_put_failure; |
| if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT, |
| devlink_sb->egress_tc_count)) |
| goto nla_put_failure; |
| |
| genlmsg_end(msg, hdr); |
| return 0; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink *devlink = info->user_ptr[0]; |
| struct devlink_sb *devlink_sb; |
| struct sk_buff *msg; |
| int err; |
| |
| devlink_sb = devlink_sb_get_from_info(devlink, info); |
| if (IS_ERR(devlink_sb)) |
| return PTR_ERR(devlink_sb); |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| err = devlink_nl_sb_fill(msg, devlink, devlink_sb, |
| DEVLINK_CMD_SB_NEW, |
| info->snd_portid, info->snd_seq, 0); |
| if (err) { |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| return genlmsg_reply(msg, info); |
| } |
| |
| static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg, |
| struct netlink_callback *cb) |
| { |
| struct devlink *devlink; |
| struct devlink_sb *devlink_sb; |
| int start = cb->args[0]; |
| unsigned long index; |
| int idx = 0; |
| int err; |
| |
| mutex_lock(&devlink_mutex); |
| xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) { |
| if (!devlink_try_get(devlink)) |
| continue; |
| |
| if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) |
| goto retry; |
| |
| mutex_lock(&devlink->lock); |
| list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
| if (idx < start) { |
| idx++; |
| continue; |
| } |
| err = devlink_nl_sb_fill(msg, devlink, devlink_sb, |
| DEVLINK_CMD_SB_NEW, |
| NETLINK_CB(cb->skb).portid, |
| cb->nlh->nlmsg_seq, |
| NLM_F_MULTI); |
| if (err) { |
| mutex_unlock(&devlink->lock); |
| devlink_put(devlink); |
| goto out; |
| } |
| idx++; |
| } |
| mutex_unlock(&devlink->lock); |
| retry: |
| devlink_put(devlink); |
| } |
| out: |
| mutex_unlock(&devlink_mutex); |
| |
| cb->args[0] = idx; |
| return msg->len; |
| } |
| |
| static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink, |
| struct devlink_sb *devlink_sb, |
| u16 pool_index, enum devlink_command cmd, |
| u32 portid, u32 seq, int flags) |
| { |
| struct devlink_sb_pool_info pool_info; |
| void *hdr; |
| int err; |
| |
| err = devlink->ops->sb_pool_get(devlink, devlink_sb->index, |
| pool_index, &pool_info); |
| if (err) |
| return err; |
| |
| hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); |
| if (!hdr) |
| return -EMSGSIZE; |
| |
| if (devlink_nl_put_handle(msg, devlink)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) |
| goto nla_put_failure; |
| if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index)) |
| goto nla_put_failure; |
| if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size)) |
| goto nla_put_failure; |
| if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE, |
| pool_info.threshold_type)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE, |
| pool_info.cell_size)) |
| goto nla_put_failure; |
| |
| genlmsg_end(msg, hdr); |
| return 0; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink *devlink = info->user_ptr[0]; |
| struct devlink_sb *devlink_sb; |
| struct sk_buff *msg; |
| u16 pool_index; |
| int err; |
| |
| devlink_sb = devlink_sb_get_from_info(devlink, info); |
| if (IS_ERR(devlink_sb)) |
| return PTR_ERR(devlink_sb); |
| |
| err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
| &pool_index); |
| if (err) |
| return err; |
| |
| if (!devlink->ops->sb_pool_get) |
| return -EOPNOTSUPP; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index, |
| DEVLINK_CMD_SB_POOL_NEW, |
| info->snd_portid, info->snd_seq, 0); |
| if (err) { |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| return genlmsg_reply(msg, info); |
| } |
| |
| static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, |
| struct devlink *devlink, |
| struct devlink_sb *devlink_sb, |
| u32 portid, u32 seq) |
| { |
| u16 pool_count = devlink_sb_pool_count(devlink_sb); |
| u16 pool_index; |
| int err; |
| |
| for (pool_index = 0; pool_index < pool_count; pool_index++) { |
| if (*p_idx < start) { |
| (*p_idx)++; |
| continue; |
| } |
| err = devlink_nl_sb_pool_fill(msg, devlink, |
| devlink_sb, |
| pool_index, |
| DEVLINK_CMD_SB_POOL_NEW, |
| portid, seq, NLM_F_MULTI); |
| if (err) |
| return err; |
| (*p_idx)++; |
| } |
| return 0; |
| } |
| |
| static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg, |
| struct netlink_callback *cb) |
| { |
| struct devlink *devlink; |
| struct devlink_sb *devlink_sb; |
| int start = cb->args[0]; |
| unsigned long index; |
| int idx = 0; |
| int err = 0; |
| |
| mutex_lock(&devlink_mutex); |
| xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) { |
| if (!devlink_try_get(devlink)) |
| continue; |
| |
| if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || |
| !devlink->ops->sb_pool_get) |
| goto retry; |
| |
| mutex_lock(&devlink->lock); |
| list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
| err = __sb_pool_get_dumpit(msg, start, &idx, devlink, |
| devlink_sb, |
| NETLINK_CB(cb->skb).portid, |
| cb->nlh->nlmsg_seq); |
| if (err == -EOPNOTSUPP) { |
| err = 0; |
| } else if (err) { |
| mutex_unlock(&devlink->lock); |
| devlink_put(devlink); |
| goto out; |
| } |
| } |
| mutex_unlock(&devlink->lock); |
| retry: |
| devlink_put(devlink); |
| } |
| out: |
| mutex_unlock(&devlink_mutex); |
| |
| if (err != -EMSGSIZE) |
| return err; |
| |
| cb->args[0] = idx; |
| return msg->len; |
| } |
| |
| static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index, |
| u16 pool_index, u32 size, |
| enum devlink_sb_threshold_type threshold_type, |
| struct netlink_ext_ack *extack) |
| |
| { |
| const struct devlink_ops *ops = devlink->ops; |
| |
| if (ops->sb_pool_set) |
| return ops->sb_pool_set(devlink, sb_index, pool_index, |
| size, threshold_type, extack); |
| return -EOPNOTSUPP; |
| } |
| |
| static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink *devlink = info->user_ptr[0]; |
| enum devlink_sb_threshold_type threshold_type; |
| struct devlink_sb *devlink_sb; |
| u16 pool_index; |
| u32 size; |
| int err; |
| |
| devlink_sb = devlink_sb_get_from_info(devlink, info); |
| if (IS_ERR(devlink_sb)) |
| return PTR_ERR(devlink_sb); |
| |
| err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
| &pool_index); |
| if (err) |
| return err; |
| |
| err = devlink_sb_th_type_get_from_info(info, &threshold_type); |
| if (err) |
| return err; |
| |
| if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]) |
| return -EINVAL; |
| |
| size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]); |
| return devlink_sb_pool_set(devlink, devlink_sb->index, |
| pool_index, size, threshold_type, |
| info->extack); |
| } |
| |
| static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg, |
| struct devlink *devlink, |
| struct devlink_port *devlink_port, |
| struct devlink_sb *devlink_sb, |
| u16 pool_index, |
| enum devlink_command cmd, |
| u32 portid, u32 seq, int flags) |
| { |
| const struct devlink_ops *ops = devlink->ops; |
| u32 threshold; |
| void *hdr; |
| int err; |
| |
| err = ops->sb_port_pool_get(devlink_port, devlink_sb->index, |
| pool_index, &threshold); |
| if (err) |
| return err; |
| |
| hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); |
| if (!hdr) |
| return -EMSGSIZE; |
| |
| if (devlink_nl_put_handle(msg, devlink)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) |
| goto nla_put_failure; |
| if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold)) |
| goto nla_put_failure; |
| |
| if (ops->sb_occ_port_pool_get) { |
| u32 cur; |
| u32 max; |
| |
| err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index, |
| pool_index, &cur, &max); |
| if (err && err != -EOPNOTSUPP) |
| goto sb_occ_get_failure; |
| if (!err) { |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max)) |
| goto nla_put_failure; |
| } |
| } |
| |
| genlmsg_end(msg, hdr); |
| return 0; |
| |
| nla_put_failure: |
| err = -EMSGSIZE; |
| sb_occ_get_failure: |
| genlmsg_cancel(msg, hdr); |
| return err; |
| } |
| |
| static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink_port *devlink_port = info->user_ptr[1]; |
| struct devlink *devlink = devlink_port->devlink; |
| struct devlink_sb *devlink_sb; |
| struct sk_buff *msg; |
| u16 pool_index; |
| int err; |
| |
| devlink_sb = devlink_sb_get_from_info(devlink, info); |
| if (IS_ERR(devlink_sb)) |
| return PTR_ERR(devlink_sb); |
| |
| err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
| &pool_index); |
| if (err) |
| return err; |
| |
| if (!devlink->ops->sb_port_pool_get) |
| return -EOPNOTSUPP; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port, |
| devlink_sb, pool_index, |
| DEVLINK_CMD_SB_PORT_POOL_NEW, |
| info->snd_portid, info->snd_seq, 0); |
| if (err) { |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| return genlmsg_reply(msg, info); |
| } |
| |
| static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, |
| struct devlink *devlink, |
| struct devlink_sb *devlink_sb, |
| u32 portid, u32 seq) |
| { |
| struct devlink_port *devlink_port; |
| u16 pool_count = devlink_sb_pool_count(devlink_sb); |
| u16 pool_index; |
| int err; |
| |
| list_for_each_entry(devlink_port, &devlink->port_list, list) { |
| for (pool_index = 0; pool_index < pool_count; pool_index++) { |
| if (*p_idx < start) { |
| (*p_idx)++; |
| continue; |
| } |
| err = devlink_nl_sb_port_pool_fill(msg, devlink, |
| devlink_port, |
| devlink_sb, |
| pool_index, |
| DEVLINK_CMD_SB_PORT_POOL_NEW, |
| portid, seq, |
| NLM_F_MULTI); |
| if (err) |
| return err; |
| (*p_idx)++; |
| } |
| } |
| return 0; |
| } |
| |
| static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg, |
| struct netlink_callback *cb) |
| { |
| struct devlink *devlink; |
| struct devlink_sb *devlink_sb; |
| int start = cb->args[0]; |
| unsigned long index; |
| int idx = 0; |
| int err = 0; |
| |
| mutex_lock(&devlink_mutex); |
| xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) { |
| if (!devlink_try_get(devlink)) |
| continue; |
| |
| if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || |
| !devlink->ops->sb_port_pool_get) |
| goto retry; |
| |
| mutex_lock(&devlink->lock); |
| list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
| err = __sb_port_pool_get_dumpit(msg, start, &idx, |
| devlink, devlink_sb, |
| NETLINK_CB(cb->skb).portid, |
| cb->nlh->nlmsg_seq); |
| if (err == -EOPNOTSUPP) { |
| err = 0; |
| } else if (err) { |
| mutex_unlock(&devlink->lock); |
| devlink_put(devlink); |
| goto out; |
| } |
| } |
| mutex_unlock(&devlink->lock); |
| retry: |
| devlink_put(devlink); |
| } |
| out: |
| mutex_unlock(&devlink_mutex); |
| |
| if (err != -EMSGSIZE) |
| return err; |
| |
| cb->args[0] = idx; |
| return msg->len; |
| } |
| |
| static int devlink_sb_port_pool_set(struct devlink_port *devlink_port, |
| unsigned int sb_index, u16 pool_index, |
| u32 threshold, |
| struct netlink_ext_ack *extack) |
| |
| { |
| const struct devlink_ops *ops = devlink_port->devlink->ops; |
| |
| if (ops->sb_port_pool_set) |
| return ops->sb_port_pool_set(devlink_port, sb_index, |
| pool_index, threshold, extack); |
| return -EOPNOTSUPP; |
| } |
| |
| static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink_port *devlink_port = info->user_ptr[1]; |
| struct devlink *devlink = info->user_ptr[0]; |
| struct devlink_sb *devlink_sb; |
| u16 pool_index; |
| u32 threshold; |
| int err; |
| |
| devlink_sb = devlink_sb_get_from_info(devlink, info); |
| if (IS_ERR(devlink_sb)) |
| return PTR_ERR(devlink_sb); |
| |
| err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
| &pool_index); |
| if (err) |
| return err; |
| |
| if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD]) |
| return -EINVAL; |
| |
| threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]); |
| return devlink_sb_port_pool_set(devlink_port, devlink_sb->index, |
| pool_index, threshold, info->extack); |
| } |
| |
| static int |
| devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink, |
| struct devlink_port *devlink_port, |
| struct devlink_sb *devlink_sb, u16 tc_index, |
| enum devlink_sb_pool_type pool_type, |
| enum devlink_command cmd, |
| u32 portid, u32 seq, int flags) |
| { |
| const struct devlink_ops *ops = devlink->ops; |
| u16 pool_index; |
| u32 threshold; |
| void *hdr; |
| int err; |
| |
| err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index, |
| tc_index, pool_type, |
| &pool_index, &threshold); |
| if (err) |
| return err; |
| |
| hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); |
| if (!hdr) |
| return -EMSGSIZE; |
| |
| if (devlink_nl_put_handle(msg, devlink)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) |
| goto nla_put_failure; |
| if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index)) |
| goto nla_put_failure; |
| if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type)) |
| goto nla_put_failure; |
| if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold)) |
| goto nla_put_failure; |
| |
| if (ops->sb_occ_tc_port_bind_get) { |
| u32 cur; |
| u32 max; |
| |
| err = ops->sb_occ_tc_port_bind_get(devlink_port, |
| devlink_sb->index, |
| tc_index, pool_type, |
| &cur, &max); |
| if (err && err != -EOPNOTSUPP) |
| return err; |
| if (!err) { |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur)) |
| goto nla_put_failure; |
| if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max)) |
| goto nla_put_failure; |
| } |
| } |
| |
| genlmsg_end(msg, hdr); |
| return 0; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct devlink_port *devlink_port = info->user_ptr[1]; |
| struct devlink *devlink = devlink_port->devlink; |
| struct devlink_sb *devlink_sb; |
| struct sk_buff *msg; |
| enum devlink_sb_pool_type pool_type; |
| u16 tc_index; |
| int err; |
| |
| devlink_sb = devlink_sb_get_from_info(devlink, info); |
| if (IS_ERR(devlink_sb)) |
| return PTR_ERR(devlink_sb); |
| |
| err = devlink_sb_pool_type_get_from_info(info, &pool_type); |
| if (err) |
| return err; |
| |
| err = devlink_sb_tc_index_get_from_info(devlink_sb, info, |
| pool_type, &tc_index); |
| if (err) |
| return err; |
| |
| if (!devlink->ops->sb_tc_pool_bind_get) |
| return -EOPNOTSUPP; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port, |
| devlink_sb, tc_index, pool_type, |
| DEVLINK_CMD_SB_TC_POOL_BIND_NEW, |
| info->snd_portid, |
| info->snd_seq, 0); |
| if (err) { |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| return genlmsg_reply(msg, info); |
| } |
| |
| static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg, |
| int start, int *p_idx, |
| struct devlink *devlink, |
| struct devlink_sb *devlink_sb, |
| u32 portid, u32 seq) |
| { |
| struct devlink_port *devlink_port; |
| u16 tc_index; |
| int err; |
| |
| list_for_each_entry(devlink_port, &devlink->port_list, list) { |
| for (tc_index = 0; |
| tc_index < devlink_sb->ingress_tc_count; tc_index++) { |
| if (*p_idx < start) { |
| (*p_idx)++; |
| continue; |
| } |
| err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, |
| devlink_port, |
| devlink_sb, |
| tc_index, |
| DEVLINK_SB_POOL_TYPE_INGRESS, |
| DEVLINK_CMD_SB_TC_POOL_BIND_NEW, |
| portid, seq, |
| NLM_F_MULTI); |
| if (err) |
| return err; |
| (*p_idx)++; |
| } |
| for |