1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1982, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)in_proto.c 8.2 (Berkeley) 2/9/95 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include "opt_mrouting.h" 38 #include "opt_ipsec.h" 39 #include "opt_inet.h" 40 #include "opt_inet6.h" 41 #include "opt_sctp.h" 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/malloc.h> 47 #include <sys/socket.h> 48 #include <sys/domain.h> 49 #include <sys/proc.h> 50 #include <sys/protosw.h> 51 #include <sys/queue.h> 52 #include <sys/sysctl.h> 53 54 #include <net/if.h> 55 #include <net/if_var.h> 56 #include <netinet/in.h> 57 #include <netinet/in_var.h> 58 59 /* 60 * While this file provides the domain and protocol switch tables for IPv4, it 61 * also provides the sysctl node declarations for net.inet.* often shared with 62 * IPv6 for common features or by upper layer protocols. In case of no IPv4 63 * support compile out everything but these sysctl nodes. 64 */ 65 #ifdef INET 66 /* netinet/raw_ip.c */ 67 extern struct protosw rip_protosw; 68 /* netinet/udp_usrreq.c */ 69 extern struct protosw udp_protosw, udplite_protosw; 70 /* netinet/tcp_usrreq.c */ 71 extern struct protosw tcp_protosw; 72 /* netinet/sctp_usrreq.c */ 73 extern struct protosw sctp_seqpacket_protosw, sctp_stream_protosw; 74 75 FEATURE(inet, "Internet Protocol version 4"); 76 77 struct domain inetdomain = { 78 .dom_family = AF_INET, 79 .dom_name = "internet", 80 .dom_rtattach = in_inithead, 81 #ifdef VIMAGE 82 .dom_rtdetach = in_detachhead, 83 #endif 84 .dom_ifattach = in_domifattach, 85 .dom_ifdetach = in_domifdetach, 86 .dom_nprotosw = 14, 87 .dom_protosw = { 88 &tcp_protosw, 89 &udp_protosw, 90 #ifdef SCTP 91 &sctp_seqpacket_protosw, 92 &sctp_stream_protosw, 93 #else 94 NULL, NULL, 95 #endif 96 &udplite_protosw, 97 &rip_protosw, 98 /* Spacer 8 times for loadable protocols. XXXGL: why 8? */ 99 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 100 }, 101 }; 102 103 DOMAIN_SET(inet); 104 #endif /* INET */ 105 106 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 107 "Internet Family"); 108 109 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 110 "IP"); 111 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 112 "ICMP"); 113 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 114 "UDP"); 115 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 116 "TCP"); 117 #if defined(SCTP) || defined(SCTP_SUPPORT) 118 SYSCTL_NODE(_net_inet, IPPROTO_SCTP, sctp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 119 "SCTP"); 120 #endif 121 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 122 "IGMP"); 123 #if defined(IPSEC) || defined(IPSEC_SUPPORT) 124 /* XXX no protocol # to use, pick something "reserved" */ 125 SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 126 "IPSEC"); 127 SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 128 "AH"); 129 SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 130 "ESP"); 131 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 132 "IPCOMP"); 133 SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 134 "IPIP"); 135 #endif /* IPSEC */ 136 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 137 "RAW"); 138 SYSCTL_NODE(_net_inet, OID_AUTO, accf, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 139 "Accept filters"); 140