1aed3b3430
They are shared between UDP over IPv4 and over IPv6. To prevent all
possible kernel build failures wrap them in #ifdef _SYS_PROTOSW_H_.
Prompted by feedback from jhb@ and jrtc27@ on c93db4abf4.
188 lines
6.4 KiB
C
188 lines
6.4 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1982, 1986, 1989, 1993
|
|
* The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)udp_var.h 8.1 (Berkeley) 6/10/93
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _NETINET_UDP_VAR_H_
|
|
#define _NETINET_UDP_VAR_H_
|
|
|
|
#include <sys/types.h>
|
|
#include <netinet/ip_var.h>
|
|
#include <netinet/udp.h>
|
|
|
|
/*
|
|
* UDP kernel structures and variables.
|
|
*/
|
|
struct udpiphdr {
|
|
struct ipovly ui_i; /* overlaid ip structure */
|
|
struct udphdr ui_u; /* udp header */
|
|
};
|
|
#define ui_x1 ui_i.ih_x1
|
|
#define ui_v ui_i.ih_x1[0]
|
|
#define ui_pr ui_i.ih_pr
|
|
#define ui_len ui_i.ih_len
|
|
#define ui_src ui_i.ih_src
|
|
#define ui_dst ui_i.ih_dst
|
|
#define ui_sport ui_u.uh_sport
|
|
#define ui_dport ui_u.uh_dport
|
|
#define ui_ulen ui_u.uh_ulen
|
|
#define ui_sum ui_u.uh_sum
|
|
|
|
/*
|
|
* Identifiers for UDP sysctl nodes.
|
|
*/
|
|
#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
|
|
#define UDPCTL_STATS 2 /* statistics (read-only) */
|
|
#define UDPCTL_MAXDGRAM 3 /* max datagram size */
|
|
#define UDPCTL_RECVSPACE 4 /* default receive buffer space */
|
|
#define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */
|
|
|
|
/* IPsec: ESP in UDP tunneling: */
|
|
#define UF_ESPINUDP_NON_IKE 0x00000001 /* w/ non-IKE marker .. */
|
|
/* .. per draft-ietf-ipsec-nat-t-ike-0[01],
|
|
* and draft-ietf-ipsec-udp-encaps-(00/)01.txt */
|
|
#define UF_ESPINUDP 0x00000002 /* w/ non-ESP marker. */
|
|
|
|
struct udpstat {
|
|
/* input statistics: */
|
|
uint64_t udps_ipackets; /* total input packets */
|
|
uint64_t udps_hdrops; /* packet shorter than header */
|
|
uint64_t udps_badsum; /* checksum error */
|
|
uint64_t udps_nosum; /* no checksum */
|
|
uint64_t udps_badlen; /* data length larger than packet */
|
|
uint64_t udps_noport; /* no socket on port */
|
|
uint64_t udps_noportbcast; /* of above, arrived as broadcast */
|
|
uint64_t udps_fullsock; /* not delivered, input socket full */
|
|
uint64_t udpps_pcbcachemiss; /* input packets missing pcb cache */
|
|
uint64_t udpps_pcbhashmiss; /* input packets not for hashed pcb */
|
|
/* output statistics: */
|
|
uint64_t udps_opackets; /* total output packets */
|
|
uint64_t udps_fastout; /* output packets on fast path */
|
|
/* of no socket on port, arrived as multicast */
|
|
uint64_t udps_noportmcast;
|
|
uint64_t udps_filtermcast; /* blocked by multicast filter */
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
#include <netinet/in_pcb.h>
|
|
#include <sys/counter.h>
|
|
struct mbuf;
|
|
|
|
typedef bool udp_tun_func_t(struct mbuf *, int, struct inpcb *,
|
|
const struct sockaddr *, void *);
|
|
typedef union {
|
|
struct icmp *icmp;
|
|
struct ip6ctlparam *ip6cp;
|
|
} udp_tun_icmp_param_t __attribute__((__transparent_union__));
|
|
typedef void udp_tun_icmp_t(udp_tun_icmp_param_t);
|
|
|
|
/*
|
|
* UDP control block; one per udp.
|
|
*/
|
|
struct udpcb {
|
|
struct inpcb u_inpcb;
|
|
#define u_start_zero u_tun_func
|
|
#define u_zero_size (sizeof(struct udpcb) - \
|
|
offsetof(struct udpcb, u_start_zero))
|
|
udp_tun_func_t *u_tun_func; /* UDP kernel tunneling callback. */
|
|
udp_tun_icmp_t *u_icmp_func; /* UDP kernel tunneling icmp callback */
|
|
u_int u_flags; /* Generic UDP flags. */
|
|
uint16_t u_rxcslen; /* Coverage for incoming datagrams. */
|
|
uint16_t u_txcslen; /* Coverage for outgoing datagrams. */
|
|
void *u_tun_ctx; /* Tunneling callback context. */
|
|
};
|
|
|
|
#define intoudpcb(ip) __containerof((inp), struct udpcb, u_inpcb)
|
|
#define sotoudpcb(so) (intoudpcb(sotoinpcb(so)))
|
|
|
|
VNET_PCPUSTAT_DECLARE(struct udpstat, udpstat);
|
|
/*
|
|
* In-kernel consumers can use these accessor macros directly to update
|
|
* stats.
|
|
*/
|
|
#define UDPSTAT_ADD(name, val) \
|
|
VNET_PCPUSTAT_ADD(struct udpstat, udpstat, name, (val))
|
|
#define UDPSTAT_INC(name) UDPSTAT_ADD(name, 1)
|
|
|
|
/*
|
|
* Kernel module consumers must use this accessor macro.
|
|
*/
|
|
void kmod_udpstat_inc(int statnum);
|
|
#define KMOD_UDPSTAT_INC(name) \
|
|
kmod_udpstat_inc(offsetof(struct udpstat, name) / sizeof(uint64_t))
|
|
|
|
SYSCTL_DECL(_net_inet_udp);
|
|
|
|
VNET_DECLARE(struct inpcbinfo, udbinfo);
|
|
VNET_DECLARE(struct inpcbinfo, ulitecbinfo);
|
|
#define V_udbinfo VNET(udbinfo)
|
|
#define V_ulitecbinfo VNET(ulitecbinfo)
|
|
|
|
extern u_long udp_sendspace;
|
|
extern u_long udp_recvspace;
|
|
VNET_DECLARE(int, udp_cksum);
|
|
VNET_DECLARE(int, udp_blackhole);
|
|
VNET_DECLARE(bool, udp_blackhole_local);
|
|
VNET_DECLARE(int, udp_log_in_vain);
|
|
#define V_udp_cksum VNET(udp_cksum)
|
|
#define V_udp_blackhole VNET(udp_blackhole)
|
|
#define V_udp_blackhole_local VNET(udp_blackhole_local)
|
|
#define V_udp_log_in_vain VNET(udp_log_in_vain)
|
|
|
|
VNET_DECLARE(int, zero_checksum_port);
|
|
#define V_zero_checksum_port VNET(zero_checksum_port)
|
|
|
|
static __inline struct inpcbinfo *
|
|
udp_get_inpcbinfo(int protocol)
|
|
{
|
|
return (protocol == IPPROTO_UDP) ? &V_udbinfo : &V_ulitecbinfo;
|
|
}
|
|
|
|
int udp_ctloutput(struct socket *, struct sockopt *);
|
|
void udplite_input(struct mbuf *, int);
|
|
struct inpcb *udp_notify(struct inpcb *inp, int errno);
|
|
int udp_shutdown(struct socket *so);
|
|
|
|
int udp_set_kernel_tunneling(struct socket *so, udp_tun_func_t f,
|
|
udp_tun_icmp_t i, void *ctx);
|
|
|
|
#ifdef _SYS_PROTOSW_H_
|
|
pr_abort_t udp_abort;
|
|
pr_disconnect_t udp_disconnect;
|
|
pr_send_t udp_send;
|
|
#endif
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _NETINET_UDP_VAR_H_ */
|