sys/freebsd/vnet.txt

# Copyright 2017 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.

include <sys/types.h>
include <sys/socket.h>
include <netinet/in.h>

syz_emit_ethernet(len len[packet], packet ptr[in, array[int8]])

resource tcp_seq_num[int32]: 0x41424344

tcp_resources {
	seq	tcp_seq_num
	ack	tcp_seq_num
}

# These pseudo syscalls read a packet from tap device and extract tcp sequence and acknowledgement numbers from it.
# They also adds the inc arguments to the returned values, this way sequence numbers get incremented.
syz_extract_tcp_res(res ptr[out, tcp_resources], seq_inc int32, ack_inc int32)
syz_extract_tcp_res$synack(res ptr[out, tcp_resources], seq_inc const[1], ack_inc const[0])

# This corresponds to LOCAL_IPV4 ("172.20.%d.170" % pid) in executor/common.h
ipv4_addr_local {
	a0	const[0xac, int8]
	a1	const[0x14, int8]
	a2	proc[0, 1, int8]
	a3	const[0xaa, int8]
} [packed]

# This corresponds to LOCAL_IPV4 ("172.20.%d.187" % pid) in executor/common.h
ipv4_addr_remote {
	a0	const[0xac, int8]
	a1	const[0x14, int8]
	a2	proc[0, 1, int8]
	a3	const[0xbb, int8]
} [packed]

ipv4_addr [
# 0.0.0.0
	empty		const[0x0, int32be]
# 172.20.%d.170
	local		ipv4_addr_local
# 172.20.%d.187
	remote		ipv4_addr_remote
# 127.0.0.1
	loopback	const[0x7f000001, int32be]
# 224.0.0.1
	multicast1	const[0xe0000001, int32be]
# 224.0.0.2
	multicast2	const[0xe0000002, int32be]
# 255.255.255.255
	broadcast	const[0xffffffff, int32be]
# random
	rand_addr	int32be
]

ipv6_addr_empty {
	a0	array[const[0x0, int8], 16]
}

# This corresponds to LOCAL_IPV6 ("fe80::%02hxaa" % pid) in executor/common.h
ipv6_addr_local {
	a0	const[0xfe, int8]
	a1	const[0x80, int8]
	a2	array[const[0x0, int8], 12]
	a3	proc[0, 1, int8]
	a4	const[0xaa, int8]
} [packed]

# This corresponds to REMOTE_IPV6 ("fe80::%02hxbb" % pid) in executor/common.h
ipv6_addr_remote {
	a0	const[0xfe, int8]
	a1	const[0x80, int8]
	a2	array[const[0x0, int8], 12]
	a3	proc[0, 1, int8]
	a4	const[0xbb, int8]
} [packed]

ipv6_addr_loopback {
	a0	const[0, int64be]
	a1	const[1, int64be]
} [packed]

ipv6_addr [
	empty		ipv6_addr_empty
	local		ipv6_addr_local
	remote		ipv6_addr_remote
	loopback	ipv6_addr_loopback
]