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freebsd-skq/sys/netinet/in_proto.c
imp 7e6cabd06e Renumber copyright clause 4 
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by:	Jan Schaumann <jschauma@stevens.edu>
Pull Request:	https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00

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/*-
* 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.
* 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.
*
* @(#)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 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,
.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,
.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,
.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_LASTHDR,
.pr_input = sctp_input,
.pr_ctlinput = sctp_ctlinput,
.pr_ctloutput = sctp_ctloutput,
.pr_init = sctp_init,
.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_LASTHDR,
.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,
.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
},
{
.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,
.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");
#if defined(IPSEC) || defined(IPSEC_SUPPORT)
/* 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");
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