sys/linux/socket_netlink_generic_devlink.txt

# 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

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

devlink_handle_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_handle_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_handle_nsim
	pci	devlink_handle_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]

type msghdr_nl_devlink[CMD] msghdr_netlink[netlink_msg_t[genl_devlink_family_id, genlmsghdr_t[CMD], devlink_handle]]
sendmsg$DEVLINK_CMD_GET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink[DEVLINK_CMD_GET]], f flags[send_flags])

type msghdr_nl_devlink_reload msghdr_netlink[netlink_msg_t[genl_devlink_family_id, genlmsghdr_t[DEVLINK_CMD_RELOAD], devlink_reload]]
sendmsg$DEVLINK_CMD_RELOAD(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink_reload], f flags[send_flags])

devlink_reload_arg [
	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 {
	handle	devlink_handle
	arg	devlink_reload_arg
} [packed, align_4]

type msghdr_nl_devlink_port_get msghdr_netlink[netlink_msg_t[genl_devlink_family_id, genlmsghdr_t[DEVLINK_CMD_PORT_GET], devlink_port_get]]
sendmsg$DEVLINK_CMD_PORT_GET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink_port_get], f flags[send_flags])

devlink_port_get {
	port_handle	devlink_port_handle
} [packed, align_4]

type msghdr_nl_devlink_port_set msghdr_netlink[netlink_msg_t[genl_devlink_family_id, genlmsghdr_t[DEVLINK_CMD_PORT_SET], devlink_port_set]]
sendmsg$DEVLINK_CMD_PORT_SET(fd sock_nl_generic, msg ptr[in, msghdr_nl_devlink_port_set], f flags[send_flags])

devlink_port_set {
	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]