525f16040f
This is required to signal connetion setup on non-blocking sockets via becoming writable. This still allows for implicit connection setup. MFC after: 1 week
398 lines
10 KiB
C
398 lines
10 KiB
C
/*-
|
|
* Copyright (c) 1982, 1986, 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.
|
|
* 4. 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.
|
|
*
|
|
* @(#)in_proto.c 8.2 (Berkeley) 2/9/95
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_mrouting.h"
|
|
#include "opt_ipsec.h"
|
|
#include "opt_inet.h"
|
|
#include "opt_inet6.h"
|
|
#include "opt_sctp.h"
|
|
#include "opt_mpath.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/domain.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/protosw.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
/*
|
|
* While this file provides the domain and protocol switch tables for IPv4, it
|
|
* also provides the sysctl node declarations for net.inet.* often shared with
|
|
* IPv6 for common features or by upper layer protocols. In case of no IPv4
|
|
* support compile out everything but these sysctl nodes.
|
|
*/
|
|
#ifdef INET
|
|
#include <net/if.h>
|
|
#include <net/if_var.h>
|
|
#include <net/route.h>
|
|
#ifdef RADIX_MPATH
|
|
#include <net/radix_mpath.h>
|
|
#endif
|
|
#include <net/vnet.h>
|
|
#endif /* INET */
|
|
|
|
#if defined(INET) || defined(INET6)
|
|
#include <netinet/in.h>
|
|
#endif
|
|
|
|
#ifdef INET
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/in_var.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/ip_var.h>
|
|
#include <netinet/ip_icmp.h>
|
|
#include <netinet/igmp_var.h>
|
|
#include <netinet/tcp.h>
|
|
#include <netinet/tcp_timer.h>
|
|
#include <netinet/tcp_var.h>
|
|
#include <netinet/udp.h>
|
|
#include <netinet/udp_var.h>
|
|
#include <netinet/ip_encap.h>
|
|
|
|
/*
|
|
* TCP/IP protocol family: IP, ICMP, UDP, TCP.
|
|
*/
|
|
|
|
static struct pr_usrreqs nousrreqs;
|
|
|
|
#ifdef IPSEC
|
|
#include <netipsec/ipsec.h>
|
|
#endif /* IPSEC */
|
|
|
|
#ifdef SCTP
|
|
#include <netinet/in_pcb.h>
|
|
#include <netinet/sctp_pcb.h>
|
|
#include <netinet/sctp.h>
|
|
#include <netinet/sctp_var.h>
|
|
#endif /* SCTP */
|
|
|
|
FEATURE(inet, "Internet Protocol version 4");
|
|
|
|
extern struct domain inetdomain;
|
|
|
|
/* Spacer for loadable protocols. */
|
|
#define IPPROTOSPACER \
|
|
{ \
|
|
.pr_domain = &inetdomain, \
|
|
.pr_protocol = PROTO_SPACER, \
|
|
.pr_usrreqs = &nousrreqs \
|
|
}
|
|
|
|
struct protosw inetsw[] = {
|
|
{
|
|
.pr_type = 0,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_IP,
|
|
.pr_init = ip_init,
|
|
#ifdef VIMAGE
|
|
.pr_destroy = ip_destroy,
|
|
#endif
|
|
.pr_slowtimo = ip_slowtimo,
|
|
.pr_drain = ip_drain,
|
|
.pr_usrreqs = &nousrreqs
|
|
},
|
|
{
|
|
.pr_type = SOCK_DGRAM,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_UDP,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
.pr_input = udp_input,
|
|
.pr_ctlinput = udp_ctlinput,
|
|
.pr_ctloutput = udp_ctloutput,
|
|
.pr_init = udp_init,
|
|
#ifdef VIMAGE
|
|
.pr_destroy = udp_destroy,
|
|
#endif
|
|
.pr_usrreqs = &udp_usrreqs
|
|
},
|
|
{
|
|
.pr_type = SOCK_STREAM,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_TCP,
|
|
.pr_flags = PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
|
|
.pr_input = tcp_input,
|
|
.pr_ctlinput = tcp_ctlinput,
|
|
.pr_ctloutput = tcp_ctloutput,
|
|
.pr_init = tcp_init,
|
|
#ifdef VIMAGE
|
|
.pr_destroy = tcp_destroy,
|
|
#endif
|
|
.pr_slowtimo = tcp_slowtimo,
|
|
.pr_drain = tcp_drain,
|
|
.pr_usrreqs = &tcp_usrreqs
|
|
},
|
|
#ifdef SCTP
|
|
{
|
|
.pr_type = SOCK_SEQPACKET,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_SCTP,
|
|
.pr_flags = PR_WANTRCVD,
|
|
.pr_input = sctp_input,
|
|
.pr_ctlinput = sctp_ctlinput,
|
|
.pr_ctloutput = sctp_ctloutput,
|
|
.pr_init = sctp_init,
|
|
#ifdef VIMAGE
|
|
.pr_destroy = sctp_finish,
|
|
#endif
|
|
.pr_drain = sctp_drain,
|
|
.pr_usrreqs = &sctp_usrreqs
|
|
},
|
|
{
|
|
.pr_type = SOCK_STREAM,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_SCTP,
|
|
.pr_flags = PR_CONNREQUIRED|PR_WANTRCVD,
|
|
.pr_input = sctp_input,
|
|
.pr_ctlinput = sctp_ctlinput,
|
|
.pr_ctloutput = sctp_ctloutput,
|
|
.pr_drain = sctp_drain,
|
|
.pr_usrreqs = &sctp_usrreqs
|
|
},
|
|
#endif /* SCTP */
|
|
{
|
|
.pr_type = SOCK_DGRAM,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_UDPLITE,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
.pr_input = udp_input,
|
|
.pr_ctlinput = udplite_ctlinput,
|
|
.pr_ctloutput = udp_ctloutput,
|
|
.pr_init = udplite_init,
|
|
#ifdef VIMAGE
|
|
.pr_destroy = udplite_destroy,
|
|
#endif
|
|
.pr_usrreqs = &udp_usrreqs
|
|
},
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_RAW,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
.pr_input = rip_input,
|
|
.pr_ctlinput = rip_ctlinput,
|
|
.pr_ctloutput = rip_ctloutput,
|
|
.pr_usrreqs = &rip_usrreqs
|
|
},
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_ICMP,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
.pr_input = icmp_input,
|
|
.pr_ctloutput = rip_ctloutput,
|
|
.pr_usrreqs = &rip_usrreqs
|
|
},
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_IGMP,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
.pr_input = igmp_input,
|
|
.pr_ctloutput = rip_ctloutput,
|
|
.pr_fasttimo = igmp_fasttimo,
|
|
.pr_slowtimo = igmp_slowtimo,
|
|
.pr_usrreqs = &rip_usrreqs
|
|
},
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_RSVP,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
.pr_input = rsvp_input,
|
|
.pr_ctloutput = rip_ctloutput,
|
|
.pr_usrreqs = &rip_usrreqs
|
|
},
|
|
#ifdef IPSEC
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_AH,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
.pr_input = ah4_input,
|
|
.pr_ctlinput = ah4_ctlinput,
|
|
.pr_usrreqs = &nousrreqs
|
|
},
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_ESP,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
.pr_input = esp4_input,
|
|
.pr_ctlinput = esp4_ctlinput,
|
|
.pr_usrreqs = &nousrreqs
|
|
},
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_IPCOMP,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
.pr_input = ipcomp4_input,
|
|
.pr_usrreqs = &nousrreqs
|
|
},
|
|
#endif /* IPSEC */
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_IPV4,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
.pr_input = encap4_input,
|
|
.pr_ctloutput = rip_ctloutput,
|
|
.pr_init = encap_init,
|
|
.pr_usrreqs = &rip_usrreqs
|
|
},
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_MOBILE,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
.pr_input = encap4_input,
|
|
.pr_ctloutput = rip_ctloutput,
|
|
.pr_init = encap_init,
|
|
.pr_usrreqs = &rip_usrreqs
|
|
},
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_ETHERIP,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
.pr_input = encap4_input,
|
|
.pr_ctloutput = rip_ctloutput,
|
|
.pr_init = encap_init,
|
|
.pr_usrreqs = &rip_usrreqs
|
|
},
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_GRE,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
.pr_input = encap4_input,
|
|
.pr_ctloutput = rip_ctloutput,
|
|
.pr_init = encap_init,
|
|
.pr_usrreqs = &rip_usrreqs
|
|
},
|
|
# ifdef INET6
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_IPV6,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
.pr_input = encap4_input,
|
|
.pr_ctloutput = rip_ctloutput,
|
|
.pr_init = encap_init,
|
|
.pr_usrreqs = &rip_usrreqs
|
|
},
|
|
#endif
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_protocol = IPPROTO_PIM,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
.pr_input = encap4_input,
|
|
.pr_ctloutput = rip_ctloutput,
|
|
.pr_usrreqs = &rip_usrreqs
|
|
},
|
|
/* Spacer n-times for loadable protocols. */
|
|
IPPROTOSPACER,
|
|
IPPROTOSPACER,
|
|
IPPROTOSPACER,
|
|
IPPROTOSPACER,
|
|
IPPROTOSPACER,
|
|
IPPROTOSPACER,
|
|
IPPROTOSPACER,
|
|
IPPROTOSPACER,
|
|
/* raw wildcard */
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &inetdomain,
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
.pr_input = rip_input,
|
|
.pr_ctloutput = rip_ctloutput,
|
|
.pr_init = rip_init,
|
|
#ifdef VIMAGE
|
|
.pr_destroy = rip_destroy,
|
|
#endif
|
|
.pr_usrreqs = &rip_usrreqs
|
|
},
|
|
};
|
|
|
|
extern int in_inithead(void **, int);
|
|
extern int in_detachhead(void **, int);
|
|
|
|
struct domain inetdomain = {
|
|
.dom_family = AF_INET,
|
|
.dom_name = "internet",
|
|
.dom_protosw = inetsw,
|
|
.dom_protoswNPROTOSW = &inetsw[nitems(inetsw)],
|
|
#ifdef RADIX_MPATH
|
|
.dom_rtattach = rn4_mpath_inithead,
|
|
#else
|
|
.dom_rtattach = in_inithead,
|
|
#endif
|
|
#ifdef VIMAGE
|
|
.dom_rtdetach = in_detachhead,
|
|
#endif
|
|
.dom_ifattach = in_domifattach,
|
|
.dom_ifdetach = in_domifdetach
|
|
};
|
|
|
|
VNET_DOMAIN_SET(inet);
|
|
#endif /* INET */
|
|
|
|
SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0,
|
|
"Internet Family");
|
|
|
|
SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP");
|
|
SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP");
|
|
SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP");
|
|
SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP");
|
|
#ifdef SCTP
|
|
SYSCTL_NODE(_net_inet, IPPROTO_SCTP, sctp, CTLFLAG_RW, 0, "SCTP");
|
|
#endif
|
|
SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP");
|
|
#ifdef IPSEC
|
|
/* XXX no protocol # to use, pick something "reserved" */
|
|
SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC");
|
|
SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH");
|
|
SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP");
|
|
SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP");
|
|
SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP");
|
|
#endif /* IPSEC */
|
|
SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW");
|
|
SYSCTL_NODE(_net_inet, OID_AUTO, accf, CTLFLAG_RW, 0,
|
|
"Accept filters");
|