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