// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2016 Mellanox Technologies. All rights reserved. * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> */ #include <net/genetlink.h> #include <net/sock.h> #include "devl_internal.h" static const struct genl_multicast_group devlink_nl_mcgrps[] = { [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME }, }; static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = { [DEVLINK_ATTR_UNSPEC] = { .strict_start_type = DEVLINK_ATTR_TRAP_POLICER_ID }, [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 }, [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO, DEVLINK_PORT_TYPE_IB), [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 }, [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 }, [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 }, [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 }, [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 }, [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 }, [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 }, [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 }, [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY, DEVLINK_ESWITCH_MODE_SWITCHDEV), [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 }, [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 }, [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 }, [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64}, [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64}, [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 }, [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 }, [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 }, [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 }, [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 }, [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 }, [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 }, [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] = NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS), [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 }, [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 }, [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 }, [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 }, [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 }, [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 }, [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 }, [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 }, [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED }, [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT, DEVLINK_RELOAD_ACTION_MAX), [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK), [DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 }, [DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 }, [DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 }, [DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 }, [DEVLINK_ATTR_RATE_TYPE] = { .type = NLA_U16 }, [DEVLINK_ATTR_RATE_TX_SHARE] = { .type = NLA_U64 }, [DEVLINK_ATTR_RATE_TX_MAX] = { .type = NLA_U64 }, [DEVLINK_ATTR_RATE_NODE_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_RATE_PARENT_NODE_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_LINECARD_INDEX] = { .type = NLA_U32 }, [DEVLINK_ATTR_LINECARD_TYPE] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_SELFTESTS] = { .type = NLA_NESTED }, [DEVLINK_ATTR_RATE_TX_PRIORITY] = { .type = NLA_U32 }, [DEVLINK_ATTR_RATE_TX_WEIGHT] = { .type = NLA_U32 }, [DEVLINK_ATTR_REGION_DIRECT] = { .type = NLA_FLAG }, }; struct devlink * devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs) { struct devlink *devlink; unsigned long index; 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]); devlinks_xa_for_each_registered_get(net, index, devlink) { devl_lock(devlink); if (devl_is_registered(devlink) && strcmp(devlink->dev->bus->name, busname) == 0 && strcmp(dev_name(devlink->dev), devname) == 0) return devlink; devl_unlock(devlink); devlink_put(devlink); } return ERR_PTR(-ENODEV); } static int devlink_nl_pre_doit(const struct genl_split_ops *ops, struct sk_buff *skb, struct genl_info *info) { struct devlink_linecard *linecard; struct devlink_port *devlink_port; struct devlink *devlink; int err; devlink = devlink_get_from_attrs_lock(genl_info_net(info), info->attrs); if (IS_ERR(devlink)) return PTR_ERR(devlink); 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: devl_unlock(devlink); devlink_put(devlink); return err; } static void devlink_nl_post_doit(const struct genl_split_ops *ops, struct sk_buff *skb, struct genl_info *info) { struct devlink *devlink; devlink = info->user_ptr[0]; devl_unlock(devlink); devlink_put(devlink); } static const struct devlink_cmd *devl_cmds[] = { [DEVLINK_CMD_GET] = &devl_cmd_get, [DEVLINK_CMD_PORT_GET] = &devl_cmd_port_get, [DEVLINK_CMD_SB_GET] = &devl_cmd_sb_get, [DEVLINK_CMD_SB_POOL_GET] = &devl_cmd_sb_pool_get, [DEVLINK_CMD_SB_PORT_POOL_GET] = &devl_cmd_sb_port_pool_get, [DEVLINK_CMD_SB_TC_POOL_BIND_GET] = &devl_cmd_sb_tc_pool_bind_get, [DEVLINK_CMD_PARAM_GET] = &devl_cmd_param_get, [DEVLINK_CMD_REGION_GET] = &devl_cmd_region_get, [DEVLINK_CMD_INFO_GET] = &devl_cmd_info_get, [DEVLINK_CMD_HEALTH_REPORTER_GET] = &devl_cmd_health_reporter_get, [DEVLINK_CMD_TRAP_GET] = &devl_cmd_trap_get, [DEVLINK_CMD_TRAP_GROUP_GET] = &devl_cmd_trap_group_get, [DEVLINK_CMD_TRAP_POLICER_GET] = &devl_cmd_trap_policer_get, [DEVLINK_CMD_RATE_GET] = &devl_cmd_rate_get, [DEVLINK_CMD_LINECARD_GET] = &devl_cmd_linecard_get, [DEVLINK_CMD_SELFTESTS_GET] = &devl_cmd_selftests_get, }; int devlink_nl_instance_iter_dumpit(struct sk_buff *msg, struct netlink_callback *cb) { const struct genl_dumpit_info *info = genl_dumpit_info(cb); struct devlink_nl_dump_state *state = devlink_dump_state(cb); const struct devlink_cmd *cmd; struct devlink *devlink; int err = 0; cmd = devl_cmds[info->op.cmd]; while ((devlink = devlinks_xa_find_get(sock_net(msg->sk), &state->instance))) { devl_lock(devlink); if (devl_is_registered(devlink)) err = cmd->dump_one(msg, devlink, cb); else err = 0; devl_unlock(devlink); devlink_put(devlink); if (err) break; state->instance++; /* restart sub-object walk for the next instance */ state->idx = 0; } if (err != -EMSGSIZE) return err; return msg->len; } struct genl_family devlink_nl_family __ro_after_init = { .name = DEVLINK_GENL_NAME, .version = DEVLINK_GENL_VERSION, .maxattr = DEVLINK_ATTR_MAX, .policy = devlink_nl_policy, .netnsok = true, .parallel_ops = true, .pre_doit = devlink_nl_pre_doit, .post_doit = devlink_nl_post_doit, .module = THIS_MODULE, .small_ops = devlink_nl_ops, .n_small_ops = ARRAY_SIZE(devlink_nl_ops), .resv_start_op = DEVLINK_CMD_SELFTESTS_RUN + 1, .mcgrps = devlink_nl_mcgrps, .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps), };