# Copyright 2019 syzkaller project authors. All rights reserved.
# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.

# AF_NETLINK/NETLINK_GENERIC/devlink support.

include <linux/net.h>
include <net/netlink.h>
include <uapi/linux/netlink.h>
include <uapi/linux/genetlink.h>
include <uapi/linux/devlink.h>

resource genl_devlink_family_id[int16]
syz_genetlink_get_family_id$devlink(name ptr[in, string["devlink"]]) genl_devlink_family_id

type msghdr_nl_devlink[CMD, POLICY] msghdr_netlink[netlink_msg_t[genl_devlink_family_id, genlmsghdr_t[CMD], POLICY]]

sendmsg$DEVLINK_CMD_GET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_GET, devlink_handle]], f flags[send_flags])
sendmsg$DEVLINK_CMD_RELOAD(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_RELOAD, devlink_reload_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_PORT_GET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_PORT_GET, devlink_port_get_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_PORT_SET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_PORT_SET, devlink_port_set_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_PORT_SPLIT(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_PORT_SPLIT, devlink_port_split_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_PORT_UNSPLIT(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_PORT_UNSPLIT, devlink_port_unsplit_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_TRAP_GET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_TRAP_GET, devlink_trap_get_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_TRAP_SET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_TRAP_SET, devlink_trap_set_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_TRAP_GROUP_GET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_TRAP_GROUP_GET, devlink_trap_group_get_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_TRAP_GROUP_SET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_TRAP_GROUP_SET, devlink_trap_group_set_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_TRAP_POLICER_GET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_TRAP_POLICER_GET, devlink_trap_policer_get_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_TRAP_POLICER_SET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_TRAP_POLICER_SET, devlink_trap_policer_set_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_SB_GET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_SB_GET, devlink_sb_get_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_SB_POOL_GET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_SB_POOL_GET, devlink_sb_pool_get_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_SB_POOL_SET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_SB_POOL_SET, devlink_sb_pool_set_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_SB_PORT_POOL_GET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_SB_PORT_POOL_GET, devlink_sb_port_pool_get_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_SB_PORT_POOL_SET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_SB_PORT_POOL_SET, devlink_sb_port_pool_set_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_SB_TC_POOL_BIND_GET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_SB_TC_POOL_BIND_GET, devlink_sb_tc_pool_bind_get_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_SB_TC_POOL_BIND_SET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_SB_TC_POOL_BIND_SET, devlink_sb_tc_pool_bind_set_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_SB_OCC_SNAPSHOT(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_SB_OCC_SNAPSHOT, devlink_sb_occ_snapshot_policy]], f flags[send_flags])
sendmsg$DEVLINK_CMD_SB_OCC_MAX_CLEAR(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_SB_OCC_MAX_CLEAR, devlink_sb_occ_max_clear_policy]], f flags[send_flags])

devlink_devname {
	prefix	stringnoz["netdevsim"]
	id	proc['0', 1, int8]
	z	const[0, int8]
} [packed]

devlink_nl_policy_nsim {
	DEVLINK_ATTR_BUS_NAME	nlattr[DEVLINK_ATTR_BUS_NAME, string["netdevsim"]]
	DEVLINK_ATTR_DEV_NAME	nlattr[DEVLINK_ATTR_DEV_NAME, devlink_devname]
} [packed, align[4]]

devlink_nl_policy_pci {
	DEVLINK_ATTR_BUS_NAME	nlattr[DEVLINK_ATTR_BUS_NAME, string["pci"]]
# 0000:00:10.0 is a fixed pci address what is moved from initial network namespace by initialize_devlink()
	DEVLINK_ATTR_DEV_NAME	nlattr[DEVLINK_ATTR_DEV_NAME, string["0000:00:10.0"]]
} [packed, align[4]]

devlink_handle [
	nsim	devlink_nl_policy_nsim
	pci	devlink_nl_policy_pci
] [varlen]

devlink_port_handle {
	port_handle		devlink_handle
# 0:3 is in sync with number of ports created by netdevsim_add()
	DEVLINK_ATTR_PORT_INDEX	nlattr[DEVLINK_ATTR_PORT_INDEX, int32[0:3]]
} [packed, align[4]]

devlink_nl_policy_reload [
	DEVLINK_ATTR_NETNS_PID	nlattr[DEVLINK_ATTR_NETNS_PID, pid]
	DEVLINK_ATTR_NETNS_FD	nlattr[DEVLINK_ATTR_NETNS_FD, fd_namespace]
	DEVLINK_ATTR_NETNS_ID	nlattr[DEVLINK_ATTR_NETNS_ID, netns_id]
] [varlen]

devlink_reload_policy {
	handle	devlink_handle
	arg	devlink_nl_policy_reload
} [packed, align[4]]

devlink_port_get_policy {
	port_handle	devlink_port_handle
} [packed, align[4]]

devlink_port_set_policy {
	port_handle		devlink_port_handle
	DEVLINK_ATTR_PORT_TYPE	nlattr[DEVLINK_ATTR_PORT_TYPE, int16[DEVLINK_PORT_TYPE_NOTSET:DEVLINK_PORT_TYPE_IB]]
} [packed, align[4]]

devlink_port_split_policy {
	port_handle			devlink_port_handle
	DEVLINK_ATTR_PORT_SPLIT_COUNT	nlattr[DEVLINK_ATTR_PORT_SPLIT_COUNT, int32[0:8]]
} [packed, align[4]]

devlink_port_unsplit_policy {
	port_handle	devlink_port_handle
} [packed, align[4]]

devlink_trap_get_policy {
	dev_handle		devlink_handle
	DEVLINK_ATTR_TRAP_NAME	nlattr[DEVLINK_ATTR_TRAP_NAME, string["source_mac_is_multicast"]]
} [packed, align[4]]

devlink_trap_set_policy {
	dev_handle			devlink_handle
	DEVLINK_ATTR_TRAP_NAME		nlattr[DEVLINK_ATTR_TRAP_NAME, string["source_mac_is_multicast"]]
	DEVLINK_ATTR_TRAP_ACTION	nlattr[DEVLINK_ATTR_TRAP_ACTION, int8[DEVLINK_TRAP_ACTION_DROP:DEVLINK_TRAP_ACTION_TRAP]]
} [packed, align[4]]

# 0 stands for the only invalid policer id, the rest has no special meaning but
#  used to ease collision in policer ids between system calls. 
trap_policer_ids = 0, 1, 2, 3

devlink_trap_policer_get_policy {
	dev_handle			devlink_handle
	DEVLINK_ATTR_TRAP_POLICER_ID	nlattr[DEVLINK_ATTR_TRAP_POLICER_ID, flags[trap_policer_ids, int32]]
} [packed, align[4]]

devlink_trap_policer_set_policy {
	dev_handle			devlink_handle
	DEVLINK_ATTR_TRAP_POLICER_ID	nlattr[DEVLINK_ATTR_TRAP_POLICER_ID, flags[trap_policer_ids, int32]]
	DEVLINK_ATTR_TRAP_POLICER_RATE	nlattr[DEVLINK_ATTR_TRAP_POLICER_RATE, int64]
	DEVLINK_ATTR_TRAP_POLICER_BURST	nlattr[DEVLINK_ATTR_TRAP_POLICER_BURST, int64]
} [packed, align[4]]

devlink_trap_group_get_policy {
	dev_handle			devlink_handle
	DEVLINK_ATTR_TRAP_GROUP_NAME	nlattr[DEVLINK_ATTR_TRAP_GROUP_NAME, string["l2_drops"]]
} [packed, align[4]]

devlink_trap_group_set_policy {
	dev_handle			devlink_handle
	DEVLINK_ATTR_TRAP_GROUP_NAME	nlattr[DEVLINK_ATTR_TRAP_GROUP_NAME, string["l2_drops"]]
	DEVLINK_ATTR_TRAP_ACTION	nlattr[DEVLINK_ATTR_TRAP_ACTION, int8[DEVLINK_TRAP_ACTION_DROP:DEVLINK_TRAP_ACTION_TRAP]]
} [packed, align[4]]

devlink_sb_get_policy {
	handle			devlink_handle
	DEVLINK_ATTR_SB_INDEX	nlattr[DEVLINK_ATTR_SB_INDEX, int32]
} [packed, align[4]]

devlink_sb_pool_get_policy {
	handle				devlink_handle
	DEVLINK_ATTR_SB_INDEX		nlattr[DEVLINK_ATTR_SB_INDEX, int32]
	DEVLINK_ATTR_SB_POOL_INDEX	nlattr[DEVLINK_ATTR_SB_POOL_INDEX, int16]
} [packed, align[4]]

devlink_sb_pool_set_policy {
	handle					devlink_handle
	DEVLINK_ATTR_SB_INDEX			nlattr[DEVLINK_ATTR_SB_INDEX, int32]
	DEVLINK_ATTR_SB_POOL_INDEX		nlattr[DEVLINK_ATTR_SB_POOL_INDEX, int16]
	DEVLINK_ATTR_SB_POOL_SIZE		nlattr[DEVLINK_ATTR_SB_POOL_SIZE, int32]
	DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE	nlattr[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE, int8[DEVLINK_SB_THRESHOLD_TYPE_STATIC:DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC]]
} [packed, align[4]]

devlink_sb_port_pool_get_policy {
	port_handle			devlink_port_handle
	DEVLINK_ATTR_SB_INDEX		nlattr[DEVLINK_ATTR_SB_INDEX, int32]
	DEVLINK_ATTR_SB_POOL_INDEX	nlattr[DEVLINK_ATTR_SB_POOL_INDEX, int16]
} [packed, align[4]]

devlink_sb_port_pool_set_policy {
	port_handle			devlink_port_handle
	DEVLINK_ATTR_SB_INDEX		nlattr[DEVLINK_ATTR_SB_INDEX, int32]
	DEVLINK_ATTR_SB_POOL_INDEX	nlattr[DEVLINK_ATTR_SB_POOL_INDEX, int16]
	DEVLINK_ATTR_SB_THRESHOLD	nlattr[DEVLINK_ATTR_SB_THRESHOLD, int32]
} [packed, align[4]]

devlink_sb_tc_pool_bind_get_policy {
	port_handle			devlink_port_handle
	DEVLINK_ATTR_SB_INDEX		nlattr[DEVLINK_ATTR_SB_INDEX, int32]
	DEVLINK_ATTR_SB_TC_INDEX	nlattr[DEVLINK_ATTR_SB_TC_INDEX, int16]
	DEVLINK_ATTR_SB_POOL_TYPE	nlattr[DEVLINK_ATTR_SB_POOL_TYPE, int8[DEVLINK_SB_POOL_TYPE_INGRESS:DEVLINK_SB_POOL_TYPE_EGRESS]]
} [packed, align[4]]

devlink_sb_tc_pool_bind_set_policy {
	port_handle			devlink_port_handle
	DEVLINK_ATTR_SB_INDEX		nlattr[DEVLINK_ATTR_SB_INDEX, int32]
	DEVLINK_ATTR_SB_TC_INDEX	nlattr[DEVLINK_ATTR_SB_TC_INDEX, int16]
	DEVLINK_ATTR_SB_POOL_TYPE	nlattr[DEVLINK_ATTR_SB_POOL_TYPE, int8[DEVLINK_SB_POOL_TYPE_INGRESS:DEVLINK_SB_POOL_TYPE_EGRESS]]
	DEVLINK_ATTR_SB_POOL_INDEX	nlattr[DEVLINK_ATTR_SB_POOL_INDEX, int16]
	DEVLINK_ATTR_SB_THRESHOLD	nlattr[DEVLINK_ATTR_SB_INDEX, int32]
} [packed, align[4]]

devlink_sb_occ_snapshot_policy {
	handle			devlink_handle
	DEVLINK_ATTR_SB_INDEX	nlattr[DEVLINK_ATTR_SB_INDEX, int32]
} [packed, align[4]]

devlink_sb_occ_max_clear_policy {
	handle			devlink_handle
	DEVLINK_ATTR_SB_INDEX	nlattr[DEVLINK_ATTR_SB_INDEX, int32]
} [packed, align[4]]