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freebsd/sys/netinet/in_proto.c
Max Laier 7c1fe95333 Commit pf version 3.5 and link additional files to the kernel build. 
Version 3.5 brings:
 - Atomic commits of ruleset changes (reduce the chance of ending up in an
   inconsistent state).
 - A 30% reduction in the size of state table entries.
 - Source-tracking (limit number of clients and states per client).
 - Sticky-address (the flexibility of round-robin with the benefits of
   source-hash).
 - Significant improvements to interface handling.
 - and many more ...
2004-06-16 23:24:02 +00:00

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7.6 KiB
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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.
* 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
* $FreeBSD$
*/
#include "opt_ipdivert.h"
#include "opt_ipx.h"
#include "opt_mrouting.h"
#include "opt_ipsec.h"
#include "opt_inet6.h"
#include "opt_pf.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/domain.h>
#include <sys/protosw.h>
#include <sys/queue.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/ip_icmp.h>
#include <netinet/ip_divert.h>
#include <netinet/igmp_var.h>
#ifdef PIM
#include <netinet/pim_var.h>
#endif
#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.
*/
#ifdef IPSEC
#include <netinet6/ipsec.h>
#include <netinet6/ah.h>
#ifdef IPSEC_ESP
#include <netinet6/esp.h>
#endif
#include <netinet6/ipcomp.h>
#endif /* IPSEC */
#ifdef FAST_IPSEC
#include <netipsec/ipsec.h>
#endif /* FAST_IPSEC */
#ifdef IPXIP
#include <netipx/ipx_ip.h>
#endif
#ifdef DEV_PFSYNC
#include <net/pfvar.h>
#include <net/if_pfsync.h>
#endif
extern struct domain inetdomain;
static struct pr_usrreqs nousrreqs;
struct protosw inetsw[] = {
{ 0, &inetdomain, 0, 0,
0, 0, 0, 0,
0,
ip_init, 0, ip_slowtimo, ip_drain,
&nousrreqs
},
{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR,
udp_input, 0, udp_ctlinput, ip_ctloutput,
0,
udp_init, 0, 0, 0,
&udp_usrreqs
},
{ SOCK_STREAM, &inetdomain, IPPROTO_TCP,
PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
tcp_input, 0, tcp_ctlinput, tcp_ctloutput,
0,
tcp_init, 0, tcp_slowtimo, tcp_drain,
&tcp_usrreqs
},
{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR,
rip_input, 0, rip_ctlinput, rip_ctloutput,
0,
0, 0, 0, 0,
&rip_usrreqs
},
{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
icmp_input, 0, 0, rip_ctloutput,
0,
0, 0, 0, 0,
&rip_usrreqs
},
{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
igmp_input, 0, 0, rip_ctloutput,
0,
igmp_init, igmp_fasttimo, igmp_slowtimo, 0,
&rip_usrreqs
},
{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
rsvp_input, 0, 0, rip_ctloutput,
0,
0, 0, 0, 0,
&rip_usrreqs
},
#ifdef IPSEC
{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
ah4_input, 0, 0, 0,
0,
0, 0, 0, 0,
&nousrreqs
},
#ifdef IPSEC_ESP
{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
esp4_input, 0, 0, 0,
0,
0, 0, 0, 0,
&nousrreqs
},
#endif
{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
ipcomp4_input, 0, 0, 0,
0,
0, 0, 0, 0,
&nousrreqs
},
#endif /* IPSEC */
#ifdef FAST_IPSEC
{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
ah4_input, 0, ah4_ctlinput, 0,
0,
0, 0, 0, 0,
&nousrreqs
},
{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
esp4_input, 0, esp4_ctlinput, 0,
0,
0, 0, 0, 0,
&nousrreqs
},
{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
ipcomp4_input, 0, 0, 0,
0,
0, 0, 0, 0,
&nousrreqs
},
#endif /* FAST_IPSEC */
{ SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
encap4_input, 0, 0, rip_ctloutput,
0,
encap_init, 0, 0, 0,
&rip_usrreqs
},
{ SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
encap4_input, 0, 0, rip_ctloutput,
0,
encap_init, 0, 0, 0,
&rip_usrreqs
},
{ SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
encap4_input, 0, 0, rip_ctloutput,
0,
encap_init, 0, 0, 0,
&rip_usrreqs
},
# ifdef INET6
{ SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
encap4_input, 0, 0, rip_ctloutput,
0,
encap_init, 0, 0, 0,
&rip_usrreqs
},
#endif
#ifdef IPDIVERT
{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR,
div_input, 0, div_ctlinput, ip_ctloutput,
0,
div_init, 0, 0, 0,
&div_usrreqs,
},
#endif
#ifdef IPXIP
{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
ipxip_input, 0, ipxip_ctlinput, 0,
0,
0, 0, 0, 0,
&rip_usrreqs
},
#endif
#ifdef PIM
{ SOCK_RAW, &inetdomain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
pim_input, 0, 0, rip_ctloutput,
0,
0, 0, 0, 0,
&rip_usrreqs
},
#endif /* PIM */
#ifdef DEV_PFSYNC
{ SOCK_RAW, &inetdomain, IPPROTO_PFSYNC, PR_ATOMIC|PR_ADDR,
pfsync_input, 0, 0, rip_ctloutput,
0,
0, 0, 0, 0,
&rip_usrreqs
},
#endif /* DEV_PFSYNC */
/* raw wildcard */
{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR,
rip_input, 0, 0, rip_ctloutput,
0,
rip_init, 0, 0, 0,
&rip_usrreqs
},
};
extern int in_inithead(void **, int);
struct domain inetdomain =
{ AF_INET, "internet", 0, 0, 0,
inetsw,
&inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
in_inithead, 32, sizeof(struct sockaddr_in)
};
DOMAIN_SET(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");
SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP");
#ifdef FAST_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");
#else
#ifdef IPSEC
SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC");
#endif /* IPSEC */
#endif /* !FAST_IPSEC */
SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW");
#ifdef IPDIVERT
SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT");
#endif
#ifdef PIM
SYSCTL_NODE(_net_inet, IPPROTO_PIM, pim, CTLFLAG_RW, 0, "PIM");
#endif
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