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 32 #include <sys/cdefs.h> 33 #include "opt_mrouting.h" 34 #include "opt_ipsec.h" 35 #include "opt_inet.h" 36 #include "opt_inet6.h" 37 #include "opt_sctp.h" 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/malloc.h> 43 #include <sys/socket.h> 44 #include <sys/domain.h> 45 #include <sys/proc.h> 46 #include <sys/protosw.h> 47 #include <sys/queue.h> 48 #include <sys/sysctl.h> 49 50 #include <net/if.h> 51 #include <net/if_var.h> 52 #include <netinet/in.h> 53 #include <netinet/in_var.h> 54 55 /* 56 * While this file provides the domain and protocol switch tables for IPv4, it 57 * also provides the sysctl node declarations for net.inet.* often shared with 58 * IPv6 for common features or by upper layer protocols. In case of no IPv4 59 * support compile out everything but these sysctl nodes. 60 */ 61 #ifdef INET 62 /* netinet/raw_ip.c */ 63 extern struct protosw rip_protosw; 64 /* netinet/udp_usrreq.c */ 65 extern struct protosw udp_protosw, udplite_protosw; 66 /* netinet/tcp_usrreq.c */ 67 extern struct protosw tcp_protosw; 68 /* netinet/sctp_usrreq.c */ 69 extern struct protosw sctp_seqpacket_protosw, sctp_stream_protosw; 70 71 FEATURE(inet, "Internet Protocol version 4"); 72 73 struct domain inetdomain = { 74 .dom_family = AF_INET, 75 .dom_name = "internet", 76 .dom_rtattach = in_inithead, 77 #ifdef VIMAGE 78 .dom_rtdetach = in_detachhead, 79 #endif 80 .dom_ifattach = in_domifattach, 81 .dom_ifdetach = in_domifdetach, 82 .dom_nprotosw = 14, 83 .dom_protosw = { 84 &tcp_protosw, 85 &udp_protosw, 86 #ifdef SCTP 87 &sctp_seqpacket_protosw, 88 &sctp_stream_protosw, 89 #else 90 NULL, NULL, 91 #endif 92 &udplite_protosw, 93 &rip_protosw, 94 /* Spacer 8 times for loadable protocols. XXXGL: why 8? */ 95 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 96 }, 97 }; 98 99 DOMAIN_SET(inet); 100 #endif /* INET */ 101 102 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 103 "Internet Family"); 104 105 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 106 "IP"); 107 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 108 "ICMP"); 109 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 110 "UDP"); 111 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 112 "TCP"); 113 #if defined(SCTP) || defined(SCTP_SUPPORT) 114 SYSCTL_NODE(_net_inet, IPPROTO_SCTP, sctp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 115 "SCTP"); 116 #endif 117 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 118 "IGMP"); 119 #if defined(IPSEC) || defined(IPSEC_SUPPORT) 120 /* XXX no protocol # to use, pick something "reserved" */ 121 SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 122 "IPSEC"); 123 SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 124 "AH"); 125 SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 126 "ESP"); 127 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 128 "IPCOMP"); 129 SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 130 "IPIP"); 131 #endif /* IPSEC */ 132 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 133 "RAW"); 134 SYSCTL_NODE(_net_inet, OID_AUTO, accf, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 135 "Accept filters"); 136