// 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),};