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# 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$devlink(name ptr[in, string["devlink"]]) genl_devlink_family_id
devlink_devname {
prefix stringnoz["netdevsim"]
id proc['0', 1, int8]
z const[0, int8]
} [packed]
# devlink_nl_policy in kernel
devlink_handle_nsim {
DEVLINK_ATTR_BUS_NAME nlattr[DEVLINK_ATTR_BUS_NAME, string["netdevsim"]]
DEVLINK_ATTR_DEV_NAME nlattr[DEVLINK_ATTR_DEV_NAME, devlink_devname]
} [packed, align_4]
# devlink_nl_policy in kernel
devlink_handle_pci {
DEVLINK_ATTR_BUS_NAME nlattr[DEVLINK_ATTR_BUS_NAME, string["pci"]]
# 0000:00:10.0 is a fixed pci address what is moved from initial network namespace by initialize_devlink()
DEVLINK_ATTR_DEV_NAME nlattr[DEVLINK_ATTR_DEV_NAME, string["0000:00:10.0"]]
} [packed, align_4]
devlink_handle [
nsim devlink_handle_nsim
pci devlink_handle_pci
] [varlen]
devlink_port_handle {
port_handle devlink_handle
# 0:3 is in sync with number of ports created by netdevsim_add()
DEVLINK_ATTR_PORT_INDEX nlattr[DEVLINK_ATTR_PORT_INDEX, int32[0:3]]
} [packed, align_4]
type msghdr_nl_devlink[CMD] msghdr_netlink[netlink_msg_t[genl_devlink_family_id, genlmsghdr_t[CMD], devlink_handle]]
sendmsg$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]
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