in_proto.c

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    1 /*-
    2  * Copyright (c) 1982, 1986, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 4. Neither the name of the University nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      @(#)in_proto.c  8.2 (Berkeley) 2/9/95
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __FBSDID("$FreeBSD: releng/8.2/sys/netinet/in_proto.c 212482 2010-09-11 22:02:36Z will $");
   34 
   35 #include "opt_ipx.h"
   36 #include "opt_mrouting.h"
   37 #include "opt_ipsec.h"
   38 #include "opt_inet6.h"
   39 #include "opt_pf.h"
   40 #include "opt_sctp.h"
   41 #include "opt_mpath.h"
   42 
   43 #include <sys/param.h>
   44 #include <sys/systm.h>
   45 #include <sys/kernel.h>
   46 #include <sys/socket.h>
   47 #include <sys/domain.h>
   48 #include <sys/proc.h>
   49 #include <sys/protosw.h>
   50 #include <sys/queue.h>
   51 #include <sys/sysctl.h>
   52 
   53 #include <net/if.h>
   54 #include <net/route.h>
   55 #ifdef RADIX_MPATH
   56 #include <net/radix_mpath.h>
   57 #endif
   58 #include <net/vnet.h>
   59 
   60 #include <netinet/in.h>
   61 #include <netinet/in_systm.h>
   62 #include <netinet/in_var.h>
   63 #include <netinet/ip.h>
   64 #include <netinet/ip_var.h>
   65 #include <netinet/ip_icmp.h>
   66 #include <netinet/igmp_var.h>
   67 #include <netinet/tcp.h>
   68 #include <netinet/tcp_timer.h>
   69 #include <netinet/tcp_var.h>
   70 #include <netinet/udp.h>
   71 #include <netinet/udp_var.h>
   72 #include <netinet/ip_encap.h>
   73 
   74 /*
   75  * TCP/IP protocol family: IP, ICMP, UDP, TCP.
   76  */
   77 
   78 static struct pr_usrreqs nousrreqs;
   79 
   80 #ifdef IPSEC
   81 #include <netipsec/ipsec.h>
   82 #endif /* IPSEC */
   83 
   84 #ifdef SCTP
   85 #include <netinet/in_pcb.h>
   86 #include <netinet/sctp_pcb.h>
   87 #include <netinet/sctp.h>
   88 #include <netinet/sctp_var.h>
   89 #endif /* SCTP */
   90 
   91 #ifdef DEV_PFSYNC
   92 #include <net/pfvar.h>
   93 #include <net/if_pfsync.h>
   94 #endif
   95 
   96 extern  struct domain inetdomain;
   97 
   98 /* Spacer for loadable protocols. */
   99 #define IPPROTOSPACER                           \
  100 {                                               \
  101         .pr_domain =            &inetdomain,    \
  102         .pr_protocol =          PROTO_SPACER,   \
  103         .pr_usrreqs =           &nousrreqs      \
  104 }
  105 
  106 struct protosw inetsw[] = {
  107 {
  108         .pr_type =              0,
  109         .pr_domain =            &inetdomain,
  110         .pr_protocol =          IPPROTO_IP,
  111         .pr_init =              ip_init,
  112 #ifdef VIMAGE
  113         .pr_destroy =           ip_destroy,
  114 #endif
  115         .pr_slowtimo =          ip_slowtimo,
  116         .pr_drain =             ip_drain,
  117         .pr_usrreqs =           &nousrreqs
  118 },
  119 {
  120         .pr_type =              SOCK_DGRAM,
  121         .pr_domain =            &inetdomain,
  122         .pr_protocol =          IPPROTO_UDP,
  123         .pr_flags =             PR_ATOMIC|PR_ADDR,
  124         .pr_input =             udp_input,
  125         .pr_ctlinput =          udp_ctlinput,
  126         .pr_ctloutput =         udp_ctloutput,
  127         .pr_init =              udp_init,
  128 #ifdef VIMAGE
  129         .pr_destroy =           udp_destroy,
  130 #endif
  131         .pr_usrreqs =           &udp_usrreqs
  132 },
  133 {
  134         .pr_type =              SOCK_STREAM,
  135         .pr_domain =            &inetdomain,
  136         .pr_protocol =          IPPROTO_TCP,
  137         .pr_flags =             PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
  138         .pr_input =             tcp_input,
  139         .pr_ctlinput =          tcp_ctlinput,
  140         .pr_ctloutput =         tcp_ctloutput,
  141         .pr_init =              tcp_init,
  142 #ifdef VIMAGE
  143         .pr_destroy =           tcp_destroy,
  144 #endif
  145         .pr_slowtimo =          tcp_slowtimo,
  146         .pr_drain =             tcp_drain,
  147         .pr_usrreqs =           &tcp_usrreqs
  148 },
  149 #ifdef SCTP
  150 { 
  151         .pr_type =              SOCK_DGRAM,
  152         .pr_domain =            &inetdomain,
  153         .pr_protocol =          IPPROTO_SCTP,
  154         .pr_flags =             PR_WANTRCVD,
  155         .pr_input =             sctp_input,
  156         .pr_ctlinput =          sctp_ctlinput,
  157         .pr_ctloutput =         sctp_ctloutput,
  158         .pr_init =              sctp_init,
  159 #ifdef VIMAGE
  160         .pr_destroy =           sctp_finish,
  161 #endif
  162         .pr_drain =             sctp_drain,
  163         .pr_usrreqs =           &sctp_usrreqs
  164 },
  165 {
  166         .pr_type =              SOCK_SEQPACKET,
  167         .pr_domain =            &inetdomain,
  168         .pr_protocol =          IPPROTO_SCTP,
  169         .pr_flags =             PR_WANTRCVD,
  170         .pr_input =             sctp_input,
  171         .pr_ctlinput =          sctp_ctlinput,
  172         .pr_ctloutput =         sctp_ctloutput,
  173         .pr_drain =             sctp_drain,
  174         .pr_usrreqs =           &sctp_usrreqs
  175 },
  176 
  177 { 
  178         .pr_type =              SOCK_STREAM,
  179         .pr_domain =            &inetdomain,
  180         .pr_protocol =          IPPROTO_SCTP,
  181         .pr_flags =             PR_WANTRCVD,
  182         .pr_input =             sctp_input,
  183         .pr_ctlinput =          sctp_ctlinput,
  184         .pr_ctloutput =         sctp_ctloutput,
  185         .pr_drain =             sctp_drain,
  186         .pr_usrreqs =           &sctp_usrreqs
  187 },
  188 #endif /* SCTP */
  189 {
  190         .pr_type =              SOCK_RAW,
  191         .pr_domain =            &inetdomain,
  192         .pr_protocol =          IPPROTO_RAW,
  193         .pr_flags =             PR_ATOMIC|PR_ADDR,
  194         .pr_input =             rip_input,
  195         .pr_ctlinput =          rip_ctlinput,
  196         .pr_ctloutput =         rip_ctloutput,
  197         .pr_usrreqs =           &rip_usrreqs
  198 },
  199 {
  200         .pr_type =              SOCK_RAW,
  201         .pr_domain =            &inetdomain,
  202         .pr_protocol =          IPPROTO_ICMP,
  203         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  204         .pr_input =             icmp_input,
  205         .pr_ctloutput =         rip_ctloutput,
  206         .pr_usrreqs =           &rip_usrreqs
  207 },
  208 {
  209         .pr_type =              SOCK_RAW,
  210         .pr_domain =            &inetdomain,
  211         .pr_protocol =          IPPROTO_IGMP,
  212         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  213         .pr_input =             igmp_input,
  214         .pr_ctloutput =         rip_ctloutput,
  215         .pr_fasttimo =          igmp_fasttimo,
  216         .pr_slowtimo =          igmp_slowtimo,
  217         .pr_usrreqs =           &rip_usrreqs
  218 },
  219 {
  220         .pr_type =              SOCK_RAW,
  221         .pr_domain =            &inetdomain,
  222         .pr_protocol =          IPPROTO_RSVP,
  223         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  224         .pr_input =             rsvp_input,
  225         .pr_ctloutput =         rip_ctloutput,
  226         .pr_usrreqs =           &rip_usrreqs
  227 },
  228 #ifdef IPSEC
  229 {
  230         .pr_type =              SOCK_RAW,
  231         .pr_domain =            &inetdomain,
  232         .pr_protocol =          IPPROTO_AH,
  233         .pr_flags =             PR_ATOMIC|PR_ADDR,
  234         .pr_input =             ah4_input,
  235         .pr_ctlinput =          ah4_ctlinput,
  236         .pr_usrreqs =           &nousrreqs
  237 },
  238 {
  239         .pr_type =              SOCK_RAW,
  240         .pr_domain =            &inetdomain,
  241         .pr_protocol =          IPPROTO_ESP,
  242         .pr_flags =             PR_ATOMIC|PR_ADDR,
  243         .pr_input =             esp4_input,
  244         .pr_ctlinput =          esp4_ctlinput,
  245         .pr_usrreqs =           &nousrreqs
  246 },
  247 {
  248         .pr_type =              SOCK_RAW,
  249         .pr_domain =            &inetdomain,
  250         .pr_protocol =          IPPROTO_IPCOMP,
  251         .pr_flags =             PR_ATOMIC|PR_ADDR,
  252         .pr_input =             ipcomp4_input,
  253         .pr_usrreqs =           &nousrreqs
  254 },
  255 #endif /* IPSEC */
  256 {
  257         .pr_type =              SOCK_RAW,
  258         .pr_domain =            &inetdomain,
  259         .pr_protocol =          IPPROTO_IPV4,
  260         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  261         .pr_input =             encap4_input,
  262         .pr_ctloutput =         rip_ctloutput,
  263         .pr_init =              encap_init,
  264         .pr_usrreqs =           &rip_usrreqs
  265 },
  266 {
  267         .pr_type =              SOCK_RAW,
  268         .pr_domain =            &inetdomain,
  269         .pr_protocol =          IPPROTO_MOBILE,
  270         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  271         .pr_input =             encap4_input,
  272         .pr_ctloutput =         rip_ctloutput,
  273         .pr_init =              encap_init,
  274         .pr_usrreqs =           &rip_usrreqs
  275 },
  276 {
  277         .pr_type =              SOCK_RAW,
  278         .pr_domain =            &inetdomain,
  279         .pr_protocol =          IPPROTO_ETHERIP,
  280         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  281         .pr_input =             encap4_input,
  282         .pr_ctloutput =         rip_ctloutput,
  283         .pr_init =              encap_init,
  284         .pr_usrreqs =           &rip_usrreqs
  285 },
  286 {
  287         .pr_type =              SOCK_RAW,
  288         .pr_domain =            &inetdomain,
  289         .pr_protocol =          IPPROTO_GRE,
  290         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  291         .pr_input =             encap4_input,
  292         .pr_ctloutput =         rip_ctloutput,
  293         .pr_init =              encap_init,
  294         .pr_usrreqs =           &rip_usrreqs
  295 },
  296 # ifdef INET6
  297 {
  298         .pr_type =              SOCK_RAW,
  299         .pr_domain =            &inetdomain,
  300         .pr_protocol =          IPPROTO_IPV6,
  301         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  302         .pr_input =             encap4_input,
  303         .pr_ctloutput =         rip_ctloutput,
  304         .pr_init =              encap_init,
  305         .pr_usrreqs =           &rip_usrreqs
  306 },
  307 #endif
  308 {
  309         .pr_type =              SOCK_RAW,
  310         .pr_domain =            &inetdomain,
  311         .pr_protocol =          IPPROTO_PIM,
  312         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  313         .pr_input =             encap4_input,
  314         .pr_ctloutput =         rip_ctloutput,
  315         .pr_usrreqs =           &rip_usrreqs
  316 },
  317 #ifdef DEV_PFSYNC
  318 {
  319         .pr_type =              SOCK_RAW,
  320         .pr_domain =            &inetdomain,
  321         .pr_protocol =          IPPROTO_PFSYNC,
  322         .pr_flags =             PR_ATOMIC|PR_ADDR,
  323         .pr_input =             pfsync_input,
  324         .pr_ctloutput =         rip_ctloutput,
  325         .pr_usrreqs =           &rip_usrreqs
  326 },
  327 #endif  /* DEV_PFSYNC */
  328 /* Spacer n-times for loadable protocols. */
  329 IPPROTOSPACER,
  330 IPPROTOSPACER,
  331 IPPROTOSPACER,
  332 IPPROTOSPACER,
  333 IPPROTOSPACER,
  334 IPPROTOSPACER,
  335 IPPROTOSPACER,
  336 IPPROTOSPACER,
  337 /* raw wildcard */
  338 {
  339         .pr_type =              SOCK_RAW,
  340         .pr_domain =            &inetdomain,
  341         .pr_flags =             PR_ATOMIC|PR_ADDR,
  342         .pr_input =             rip_input,
  343         .pr_ctloutput =         rip_ctloutput,
  344         .pr_init =              rip_init,
  345 #ifdef VIMAGE
  346         .pr_destroy =           rip_destroy,
  347 #endif
  348         .pr_usrreqs =           &rip_usrreqs
  349 },
  350 };
  351 
  352 extern int in_inithead(void **, int);
  353 extern int in_detachhead(void **, int);
  354 
  355 struct domain inetdomain = {
  356         .dom_family =           AF_INET,
  357         .dom_name =             "internet",
  358         .dom_protosw =          inetsw,
  359         .dom_protoswNPROTOSW =  &inetsw[sizeof(inetsw)/sizeof(inetsw[0])],
  360 #ifdef RADIX_MPATH
  361         .dom_rtattach =         rn4_mpath_inithead,
  362 #else
  363         .dom_rtattach =         in_inithead,
  364 #endif
  365 #ifdef VIMAGE
  366         .dom_rtdetach =         in_detachhead,
  367 #endif
  368         .dom_rtoffset =         32,
  369         .dom_maxrtkey =         sizeof(struct sockaddr_in),
  370         .dom_ifattach =         in_domifattach,
  371         .dom_ifdetach =         in_domifdetach
  372 };
  373 
  374 VNET_DOMAIN_SET(inet);
  375 
  376 SYSCTL_NODE(_net,      PF_INET,         inet,   CTLFLAG_RW, 0,
  377         "Internet Family");
  378 
  379 SYSCTL_NODE(_net_inet, IPPROTO_IP,      ip,     CTLFLAG_RW, 0,  "IP");
  380 SYSCTL_NODE(_net_inet, IPPROTO_ICMP,    icmp,   CTLFLAG_RW, 0,  "ICMP");
  381 SYSCTL_NODE(_net_inet, IPPROTO_UDP,     udp,    CTLFLAG_RW, 0,  "UDP");
  382 SYSCTL_NODE(_net_inet, IPPROTO_TCP,     tcp,    CTLFLAG_RW, 0,  "TCP");
  383 #ifdef SCTP
  384 SYSCTL_NODE(_net_inet, IPPROTO_SCTP,    sctp,   CTLFLAG_RW, 0,  "SCTP");
  385 #endif
  386 SYSCTL_NODE(_net_inet, IPPROTO_IGMP,    igmp,   CTLFLAG_RW, 0,  "IGMP");
  387 #ifdef IPSEC
  388 /* XXX no protocol # to use, pick something "reserved" */
  389 SYSCTL_NODE(_net_inet, 253,             ipsec,  CTLFLAG_RW, 0,  "IPSEC");
  390 SYSCTL_NODE(_net_inet, IPPROTO_AH,      ah,     CTLFLAG_RW, 0,  "AH");
  391 SYSCTL_NODE(_net_inet, IPPROTO_ESP,     esp,    CTLFLAG_RW, 0,  "ESP");
  392 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP,  ipcomp, CTLFLAG_RW, 0,  "IPCOMP");
  393 SYSCTL_NODE(_net_inet, IPPROTO_IPIP,    ipip,   CTLFLAG_RW, 0,  "IPIP");
  394 #endif /* IPSEC */
  395 SYSCTL_NODE(_net_inet, IPPROTO_RAW,     raw,    CTLFLAG_RW, 0,  "RAW");
  396 #ifdef DEV_PFSYNC
  397 SYSCTL_NODE(_net_inet, IPPROTO_PFSYNC,  pfsync, CTLFLAG_RW, 0,  "PFSYNC");
  398 #endif
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FreeBSD/Linux Kernel Cross Reference sys/netinet/in_proto.c

FreeBSD/Linux Kernel Cross Reference
sys/netinet/in_proto.c
