sys/linux/socket_inet_udp.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.

# AF_INET and AF_INET6: UDP support

include <asm/ioctls.h>
include <linux/udp.h>
include <uapi/linux/sockios.h>

resource sock_udp[sock_in]

udp_pair {
	f0	sock_udp
	f1	sock_udp
}

socket$inet_udp(domain const[AF_INET], type const[SOCK_DGRAM], proto const[0]) sock_udp
socket$inet_udplite(domain const[AF_INET], type const[SOCK_DGRAM], proto const[IPPROTO_UDPLITE]) sock_udp
socketpair$inet_udp(domain const[AF_INET], type const[SOCK_DGRAM], proto const[0], fds ptr[out, udp_pair])
socketpair$inet_udplite(domain const[AF_INET], type const[SOCK_DGRAM], proto const[IPPROTO_UDPLITE], fds ptr[out, udp_pair])

resource sock_udp6[sock_in6]

udp6_pair {
	f0	sock_udp6
	f1	sock_udp6
}

socket$inet6_udp(domain const[AF_INET6], type const[SOCK_DGRAM], proto const[0]) sock_udp6
socket$inet6_udplite(domain const[AF_INET6], type const[SOCK_DGRAM], proto const[IPPROTO_UDPLITE]) sock_udp6
socketpair$inet6_udp(domain const[AF_INET6], type const[SOCK_DGRAM], proto const[0], fds ptr[out, udp6_pair])
socketpair$inet6_udplite(domain const[AF_INET6], type const[SOCK_DGRAM], proto const[IPPROTO_UDPLITE], fds ptr[out, udp6_pair])

# Generic UDP socket options

udp_option_types_int = UDP_CORK, UDP_NO_CHECK6_TX, UDP_NO_CHECK6_RX, UDP_SEGMENT, UDPLITE_SEND_CSCOV, UDPLITE_RECV_CSCOV

getsockopt$inet_udp_int(fd sock_udp, level const[IPPROTO_UDP], optname flags[udp_option_types_int], optval ptr[out, int32], optlen ptr[inout, len[optval, int32]])
setsockopt$inet_udp_int(fd sock_udp, level const[IPPROTO_UDP], optname flags[udp_option_types_int], optval ptr[in, int32], optlen len[optval])
getsockopt$inet6_udp_int(fd sock_udp6, level const[IPPROTO_UDP], optname flags[udp_option_types_int], optval ptr[out, int32], optlen ptr[inout, len[optval, int32]])
setsockopt$inet6_udp_int(fd sock_udp6, level const[IPPROTO_UDP], optname flags[udp_option_types_int], optval ptr[in, int32], optlen len[optval])

# Specific UDP socket options

udp_encap_option_values = UDP_ENCAP_ESPINUDP_NON_IKE, UDP_ENCAP_ESPINUDP, UDP_ENCAP_L2TPINUDP, UDP_ENCAP_GTP0, UDP_ENCAP_GTP1U

setsockopt$inet_udp_encap(fd sock_udp, level const[IPPROTO_UDP], optname const[UDP_ENCAP], optval ptr[in, flags[udp_encap_option_values, int32]], optlen len[optval])
setsockopt$inet6_udp_encap(fd sock_udp6, level const[IPPROTO_UDP], optname const[UDP_ENCAP], optval ptr[in, flags[udp_encap_option_values, int32]], optlen len[optval])

# UDP ioctls

ioctl$sock_inet_udp_SIOCINQ(fd sock_udp, cmd const[SIOCINQ], arg ptr[out, int32])
ioctl$sock_inet6_udp_SIOCINQ(fd sock_udp6, cmd const[SIOCINQ], arg ptr[out, int32])

ioctl$sock_inet_udp_SIOCOUTQ(fd sock_udp, cmd const[SIOCOUTQ], arg ptr[out, int32])
ioctl$sock_inet6_udp_SIOCOUTQ(fd sock_udp6, cmd const[SIOCOUTQ], arg ptr[out, int32])

define UDPLITE_SEND_CSCOV	10
define UDPLITE_RECV_CSCOV	11