mpls_proto.c revision 1.14
1 /* $NetBSD: mpls_proto.c,v 1.14 2014/07/09 04:54:04 rtr Exp $ */ 2 3 /* 4 * Copyright (c) 2010 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Mihai Chelaru <kefren (at) NetBSD.org> 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: mpls_proto.c,v 1.14 2014/07/09 04:54:04 rtr Exp $"); 34 35 #include "opt_inet.h" 36 #include "opt_mbuftrace.h" 37 38 #include <sys/param.h> 39 #include <sys/socket.h> 40 #include <sys/protosw.h> 41 #include <sys/domain.h> 42 #include <sys/socketvar.h> 43 #include <sys/sysctl.h> 44 45 #include <net/route.h> 46 47 #include <netmpls/mpls.h> 48 #include <netmpls/mpls_var.h> 49 50 struct ifqueue mplsintrq; 51 52 static int mpls_attach(struct socket *, int); 53 static void sysctl_net_mpls_setup(struct sysctllog **); 54 55 #ifdef MBUFTRACE 56 struct mowner mpls_owner = MOWNER_INIT("MPLS", ""); 57 #endif 58 59 int mpls_defttl = 255; 60 int mpls_mapttl_inet = 1; 61 int mpls_mapttl_inet6 = 1; 62 int mpls_icmp_respond = 0; 63 int mpls_forwarding = 0; 64 int mpls_accept = 0; 65 int mpls_mapprec_inet = 1; 66 int mpls_mapclass_inet6 = 1; 67 int mpls_rfc4182 = 1; 68 69 void mpls_init(void) 70 { 71 #ifdef MBUFTRACE 72 MOWNER_ATTACH(&mpls_owner); 73 #endif 74 memset(&mplsintrq, 0, sizeof(mplsintrq)); 75 mplsintrq.ifq_maxlen = 256; 76 77 sysctl_net_mpls_setup(NULL); 78 } 79 80 static int 81 mpls_attach(struct socket *so, int proto) 82 { 83 int error = EOPNOTSUPP; 84 85 sosetlock(so); 86 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 87 error = soreserve(so, 8192, 8192); 88 } 89 return error; 90 } 91 92 static void 93 mpls_detach(struct socket *so) 94 { 95 } 96 97 static int 98 mpls_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 99 { 100 return EOPNOTSUPP; 101 } 102 103 static int 104 mpls_stat(struct socket *so, struct stat *ub) 105 { 106 KASSERT(solocked(so)); 107 108 return EOPNOTSUPP; 109 } 110 111 static int 112 mpls_peeraddr(struct socket *so, struct mbuf *nam) 113 { 114 KASSERT(solocked(so)); 115 116 return EOPNOTSUPP; 117 } 118 119 static int 120 mpls_sockaddr(struct socket *so, struct mbuf *nam) 121 { 122 KASSERT(solocked(so)); 123 124 return EOPNOTSUPP; 125 } 126 127 static int 128 mpls_usrreq(struct socket *so, int req, struct mbuf *m, 129 struct mbuf *nam, struct mbuf *control, struct lwp *l) 130 { 131 return EOPNOTSUPP; 132 } 133 134 /* 135 * Sysctl for MPLS variables. 136 */ 137 static void 138 sysctl_net_mpls_setup(struct sysctllog **clog) 139 { 140 141 sysctl_createv(clog, 0, NULL, NULL, 142 CTLFLAG_PERMANENT, 143 CTLTYPE_NODE, "mpls", NULL, 144 NULL, 0, NULL, 0, 145 CTL_NET, PF_MPLS, CTL_EOL); 146 147 sysctl_createv(clog, 0, NULL, NULL, 148 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 149 CTLTYPE_INT, "ttl", 150 SYSCTL_DESCR("Default TTL"), 151 NULL, 0, &mpls_defttl, 0, 152 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 153 sysctl_createv(clog, 0, NULL, NULL, 154 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 155 CTLTYPE_INT, "forwarding", 156 SYSCTL_DESCR("MPLS forwarding"), 157 NULL, 0, &mpls_forwarding, 0, 158 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 159 sysctl_createv(clog, 0, NULL, NULL, 160 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 161 CTLTYPE_INT, "accept", 162 SYSCTL_DESCR("Accept MPLS Frames"), 163 NULL, 0, &mpls_accept, 0, 164 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 165 sysctl_createv(clog, 0, NULL, NULL, 166 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 167 CTLTYPE_INT, "ifq_len", 168 SYSCTL_DESCR("MPLS queue length"), 169 NULL, 0, &mplsintrq.ifq_maxlen, 0, 170 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 171 sysctl_createv(clog, 0, NULL, NULL, 172 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 173 CTLTYPE_INT, "rfc4182", 174 SYSCTL_DESCR("RFC 4182 conformance"), 175 NULL, 0, &mpls_rfc4182, 0, 176 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 177 #ifdef INET 178 sysctl_createv(clog, 0, NULL, NULL, 179 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 180 CTLTYPE_INT, "inet_mapttl", 181 SYSCTL_DESCR("Map IP TTL"), 182 NULL, 0, &mpls_mapttl_inet, 0, 183 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 184 sysctl_createv(clog, 0, NULL, NULL, 185 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 186 CTLTYPE_INT, "inet_map_prec", 187 SYSCTL_DESCR("Map IP Prec"), 188 NULL, 0, &mpls_mapprec_inet, 0, 189 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 190 sysctl_createv(clog, 0, NULL, NULL, 191 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 192 CTLTYPE_INT, "icmp_respond", 193 SYSCTL_DESCR("Emit ICMP packets on errors"), 194 NULL, 0, &mpls_icmp_respond, 0, 195 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 196 #endif 197 #ifdef INET6 198 sysctl_createv(clog, 0, NULL, NULL, 199 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 200 CTLTYPE_INT, "inet6_mapttl", 201 SYSCTL_DESCR("Map IP6 TTL"), 202 NULL, 0, &mpls_mapttl_inet6, 0, 203 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 204 sysctl_createv(clog, 0, NULL, NULL, 205 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 206 CTLTYPE_INT, "inet6_map_prec", 207 SYSCTL_DESCR("Map IP6 class"), 208 NULL, 0, &mpls_mapclass_inet6, 0, 209 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 210 #endif 211 } 212 213 DOMAIN_DEFINE(mplsdomain); 214 215 PR_WRAP_USRREQS(mpls) 216 #define mpls_attach mpls_attach_wrapper 217 #define mpls_detach mpls_detach_wrapper 218 #define mpls_ioctl mpls_ioctl_wrapper 219 #define mpls_stat mpls_stat_wrapper 220 #define mpls_peeraddr mpls_peeraddr_wrapper 221 #define mpls_sockaddr mpls_sockaddr_wrapper 222 #define mpls_usrreq mpls_usrreq_wrapper 223 224 static const struct pr_usrreqs mpls_usrreqs = { 225 .pr_attach = mpls_attach, 226 .pr_detach = mpls_detach, 227 .pr_ioctl = mpls_ioctl, 228 .pr_stat = mpls_stat, 229 .pr_peeraddr = mpls_peeraddr, 230 .pr_sockaddr = mpls_sockaddr, 231 .pr_generic = mpls_usrreq, 232 }; 233 234 const struct protosw mplssw[] = { 235 { .pr_domain = &mplsdomain, 236 .pr_init = mpls_init, 237 }, 238 { 239 .pr_type = SOCK_DGRAM, 240 .pr_domain = &mplsdomain, 241 .pr_flags = PR_ATOMIC | PR_ADDR, 242 .pr_usrreqs = &mpls_usrreqs, 243 }, 244 { 245 .pr_type = SOCK_RAW, 246 .pr_domain = &mplsdomain, 247 .pr_flags = PR_ATOMIC | PR_ADDR, 248 .pr_usrreqs = &mpls_usrreqs, 249 }, 250 }; 251 252 struct domain mplsdomain = { 253 .dom_family = PF_MPLS, 254 .dom_name = "MPLS", 255 .dom_init = NULL, 256 .dom_externalize = NULL, 257 .dom_dispose = NULL, 258 .dom_protosw = mplssw, 259 .dom_protoswNPROTOSW = &mplssw[__arraycount(mplssw)], 260 .dom_rtattach = rt_inithead, 261 .dom_rtoffset = offsetof(struct sockaddr_mpls, smpls_addr) << 3, 262 .dom_maxrtkey = sizeof(union mpls_shim), 263 .dom_ifattach = NULL, 264 .dom_ifdetach = NULL, 265 .dom_ifqueues = { &mplsintrq, NULL }, 266 .dom_link = { NULL }, 267 .dom_mowner = MOWNER_INIT("MPLS", ""), 268 .dom_sa_cmpofs = offsetof(struct sockaddr_mpls, smpls_addr), 269 .dom_sa_cmplen = sizeof(union mpls_shim), 270 .dom_rtcache = LIST_HEAD_INITIALIZER(mplsdomain.dom_rtcache) 271 }; 272
Indexes created Wed Sep 24 05:09:52 GMT 2025