if_stf.c revision 1.5.2.7
1 1.5.2.7 bouyer /* $NetBSD: if_stf.c,v 1.5.2.7 2001/03/12 13:31:48 bouyer Exp $ */ 2 1.5.2.6 bouyer /* $KAME: if_stf.c,v 1.51 2001/01/22 07:27:16 itojun Exp $ */ 3 1.5.2.2 bouyer 4 1.5.2.2 bouyer /* 5 1.5.2.2 bouyer * Copyright (C) 2000 WIDE Project. 6 1.5.2.2 bouyer * All rights reserved. 7 1.5.2.2 bouyer * 8 1.5.2.2 bouyer * Redistribution and use in source and binary forms, with or without 9 1.5.2.2 bouyer * modification, are permitted provided that the following conditions 10 1.5.2.2 bouyer * are met: 11 1.5.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 12 1.5.2.2 bouyer * notice, this list of conditions and the following disclaimer. 13 1.5.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 14 1.5.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 15 1.5.2.2 bouyer * documentation and/or other materials provided with the distribution. 16 1.5.2.2 bouyer * 3. Neither the name of the project nor the names of its contributors 17 1.5.2.2 bouyer * may be used to endorse or promote products derived from this software 18 1.5.2.2 bouyer * without specific prior written permission. 19 1.5.2.2 bouyer * 20 1.5.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 1.5.2.2 bouyer * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 1.5.2.2 bouyer * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 1.5.2.2 bouyer * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 1.5.2.2 bouyer * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 1.5.2.2 bouyer * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 1.5.2.2 bouyer * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 1.5.2.2 bouyer * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 1.5.2.2 bouyer * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 1.5.2.2 bouyer * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 1.5.2.2 bouyer * SUCH DAMAGE. 31 1.5.2.2 bouyer */ 32 1.5.2.2 bouyer 33 1.5.2.2 bouyer /* 34 1.5.2.7 bouyer * 6to4 interface, based on RFC3056. 35 1.5.2.2 bouyer * 36 1.5.2.2 bouyer * 6to4 interface is NOT capable of link-layer (I mean, IPv4) multicasting. 37 1.5.2.2 bouyer * There is no address mapping defined from IPv6 multicast address to IPv4 38 1.5.2.2 bouyer * address. Therefore, we do not have IFF_MULTICAST on the interface. 39 1.5.2.2 bouyer * 40 1.5.2.2 bouyer * Due to the lack of address mapping for link-local addresses, we cannot 41 1.5.2.2 bouyer * throw packets toward link-local addresses (fe80::x). Also, we cannot throw 42 1.5.2.2 bouyer * packets to link-local multicast addresses (ff02::x). 43 1.5.2.2 bouyer * 44 1.5.2.2 bouyer * Here are interesting symptoms due to the lack of link-local address: 45 1.5.2.2 bouyer * 46 1.5.2.2 bouyer * Unicast routing exchange: 47 1.5.2.2 bouyer * - RIPng: Impossible. Uses link-local multicast packet toward ff02::9, 48 1.5.2.2 bouyer * and link-local addresses as nexthop. 49 1.5.2.2 bouyer * - OSPFv6: Impossible. OSPFv6 assumes that there's link-local address 50 1.5.2.2 bouyer * assigned to the link, and makes use of them. Also, HELLO packets use 51 1.5.2.2 bouyer * link-local multicast addresses (ff02::5 and ff02::6). 52 1.5.2.2 bouyer * - BGP4+: Maybe. You can only use global address as nexthop, and global 53 1.5.2.2 bouyer * address as TCP endpoint address. 54 1.5.2.2 bouyer * 55 1.5.2.2 bouyer * Multicast routing protocols: 56 1.5.2.2 bouyer * - PIM: Hello packet cannot be used to discover adjacent PIM routers. 57 1.5.2.2 bouyer * Adjacent PIM routers must be configured manually (is it really spec-wise 58 1.5.2.2 bouyer * correct thing to do?). 59 1.5.2.2 bouyer * 60 1.5.2.2 bouyer * ICMPv6: 61 1.5.2.2 bouyer * - Redirects cannot be used due to the lack of link-local address. 62 1.5.2.2 bouyer * 63 1.5.2.7 bouyer * stf interface does not have, and will not need, a link-local address. 64 1.5.2.7 bouyer * It seems to have no real benefit and does not help the above symptoms much. 65 1.5.2.7 bouyer * Even if we assign link-locals to interface, we cannot really 66 1.5.2.7 bouyer * use link-local unicast/multicast on top of 6to4 cloud (since there's no 67 1.5.2.7 bouyer * encapsulation defined for link-local address), and the above analysis does 68 1.5.2.7 bouyer * not change. RFC3056 does not mandate the assignment of link-local address 69 1.5.2.7 bouyer * either. 70 1.5.2.2 bouyer * 71 1.5.2.2 bouyer * 6to4 interface has security issues. Refer to 72 1.5.2.2 bouyer * http://playground.iijlab.net/i-d/draft-itojun-ipv6-transition-abuse-00.txt 73 1.5.2.2 bouyer * for details. The code tries to filter out some of malicious packets. 74 1.5.2.2 bouyer * Note that there is no way to be 100% secure. 75 1.5.2.2 bouyer */ 76 1.5.2.2 bouyer 77 1.5.2.2 bouyer #if defined(__FreeBSD__) && __FreeBSD__ >= 3 78 1.5.2.2 bouyer #include "opt_inet.h" 79 1.5.2.2 bouyer #include "opt_inet6.h" 80 1.5.2.2 bouyer #endif 81 1.5.2.2 bouyer #ifdef __NetBSD__ 82 1.5.2.2 bouyer #include "opt_inet.h" 83 1.5.2.2 bouyer #endif 84 1.5.2.2 bouyer 85 1.5.2.2 bouyer #include <sys/param.h> 86 1.5.2.2 bouyer #include <sys/systm.h> 87 1.5.2.2 bouyer #include <sys/socket.h> 88 1.5.2.2 bouyer #include <sys/sockio.h> 89 1.5.2.2 bouyer #include <sys/mbuf.h> 90 1.5.2.2 bouyer #include <sys/errno.h> 91 1.5.2.2 bouyer #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) 92 1.5.2.2 bouyer #include <sys/ioctl.h> 93 1.5.2.2 bouyer #endif 94 1.5.2.2 bouyer #include <sys/protosw.h> 95 1.5.2.2 bouyer #ifdef __FreeBSD__ 96 1.5.2.2 bouyer #include <sys/kernel.h> 97 1.5.2.2 bouyer #endif 98 1.5.2.2 bouyer #include <sys/queue.h> 99 1.5.2.6 bouyer #include <sys/syslog.h> 100 1.5.2.2 bouyer #include <machine/cpu.h> 101 1.5.2.2 bouyer 102 1.5.2.2 bouyer #if defined(__FreeBSD__) && __FreeBSD__ >= 3 103 1.5.2.2 bouyer #include <sys/malloc.h> 104 1.5.2.2 bouyer #endif 105 1.5.2.2 bouyer 106 1.5.2.2 bouyer #include <net/if.h> 107 1.5.2.2 bouyer #include <net/route.h> 108 1.5.2.2 bouyer #include <net/netisr.h> 109 1.5.2.2 bouyer #include <net/if_types.h> 110 1.5.2.2 bouyer #include <net/if_stf.h> 111 1.5.2.2 bouyer 112 1.5.2.2 bouyer #include <netinet/in.h> 113 1.5.2.2 bouyer #include <netinet/in_systm.h> 114 1.5.2.2 bouyer #include <netinet/ip.h> 115 1.5.2.2 bouyer #include <netinet/ip_var.h> 116 1.5.2.2 bouyer #include <netinet/in_var.h> 117 1.5.2.2 bouyer 118 1.5.2.2 bouyer #include <netinet/ip6.h> 119 1.5.2.2 bouyer #include <netinet6/ip6_var.h> 120 1.5.2.2 bouyer #include <netinet6/in6_gif.h> 121 1.5.2.2 bouyer #include <netinet6/in6_var.h> 122 1.5.2.2 bouyer #include <netinet/ip_ecn.h> 123 1.5.2.2 bouyer 124 1.5.2.2 bouyer #include <netinet/ip_encap.h> 125 1.5.2.2 bouyer 126 1.5.2.2 bouyer #include <machine/stdarg.h> 127 1.5.2.2 bouyer 128 1.5.2.2 bouyer #include <net/net_osdep.h> 129 1.5.2.2 bouyer 130 1.5.2.2 bouyer #if defined(__FreeBSD__) && __FreeBSD__ >= 4 131 1.5.2.2 bouyer #include "bpf.h" 132 1.5.2.2 bouyer #define NBPFILTER NBPF 133 1.5.2.2 bouyer #else 134 1.5.2.2 bouyer #include "bpfilter.h" 135 1.5.2.2 bouyer #endif 136 1.5.2.2 bouyer #include "stf.h" 137 1.5.2.2 bouyer #include "gif.h" /*XXX*/ 138 1.5.2.2 bouyer 139 1.5.2.2 bouyer #if NBPFILTER > 0 140 1.5.2.2 bouyer #include <net/bpf.h> 141 1.5.2.2 bouyer #endif 142 1.5.2.2 bouyer 143 1.5.2.2 bouyer #if NGIF > 0 144 1.5.2.2 bouyer #include <net/if_gif.h> 145 1.5.2.2 bouyer #endif 146 1.5.2.2 bouyer 147 1.5.2.2 bouyer #if NSTF > 0 148 1.5.2.2 bouyer 149 1.5.2.2 bouyer #define IN6_IS_ADDR_6TO4(x) (ntohs((x)->s6_addr16[0]) == 0x2002) 150 1.5.2.2 bouyer #define GET_V4(x) ((struct in_addr *)(&(x)->s6_addr16[1])) 151 1.5.2.2 bouyer 152 1.5.2.2 bouyer struct stf_softc { 153 1.5.2.2 bouyer struct ifnet sc_if; /* common area */ 154 1.5.2.2 bouyer union { 155 1.5.2.2 bouyer struct route __sc_ro4; 156 1.5.2.2 bouyer struct route_in6 __sc_ro6; /* just for safety */ 157 1.5.2.2 bouyer } __sc_ro46; 158 1.5.2.2 bouyer #define sc_ro __sc_ro46.__sc_ro4 159 1.5.2.2 bouyer const struct encaptab *encap_cookie; 160 1.5.2.2 bouyer LIST_ENTRY(stf_softc) sc_list; 161 1.5.2.2 bouyer }; 162 1.5.2.2 bouyer 163 1.5.2.2 bouyer LIST_HEAD(, stf_softc) stf_softc_list; 164 1.5.2.2 bouyer 165 1.5.2.2 bouyer int stf_clone_create __P((struct if_clone *, int)); 166 1.5.2.2 bouyer void stf_clone_destroy __P((struct ifnet *)); 167 1.5.2.2 bouyer 168 1.5.2.2 bouyer struct if_clone stf_cloner = 169 1.5.2.2 bouyer IF_CLONE_INITIALIZER("stf", stf_clone_create, stf_clone_destroy); 170 1.5.2.2 bouyer 171 1.5.2.2 bouyer #if NGIF > 0 172 1.5.2.2 bouyer extern int ip_gif_ttl; /*XXX*/ 173 1.5.2.2 bouyer #else 174 1.5.2.2 bouyer static int ip_gif_ttl = 40; /*XXX*/ 175 1.5.2.2 bouyer #endif 176 1.5.2.2 bouyer 177 1.5.2.2 bouyer extern struct protosw in_stf_protosw; 178 1.5.2.2 bouyer 179 1.5.2.2 bouyer #ifdef __FreeBSD__ 180 1.5.2.2 bouyer void stfattach __P((void *)); 181 1.5.2.2 bouyer #else 182 1.5.2.2 bouyer void stfattach __P((int)); 183 1.5.2.2 bouyer #endif 184 1.5.2.2 bouyer static int stf_encapcheck __P((const struct mbuf *, int, int, void *)); 185 1.5.2.2 bouyer static struct in6_ifaddr *stf_getsrcifa6 __P((struct ifnet *)); 186 1.5.2.2 bouyer static int stf_output __P((struct ifnet *, struct mbuf *, struct sockaddr *, 187 1.5.2.2 bouyer struct rtentry *)); 188 1.5.2.6 bouyer static int stf_checkaddr4 __P((struct stf_softc *, struct in_addr *, 189 1.5.2.6 bouyer struct ifnet *)); 190 1.5.2.6 bouyer static int stf_checkaddr6 __P((struct stf_softc *, struct in6_addr *, 191 1.5.2.6 bouyer struct ifnet *)); 192 1.5.2.2 bouyer static void stf_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *)); 193 1.5.2.2 bouyer #if defined(__FreeBSD__) && __FreeBSD__ < 3 194 1.5.2.2 bouyer static int stf_ioctl __P((struct ifnet *, int, caddr_t)); 195 1.5.2.2 bouyer #else 196 1.5.2.2 bouyer static int stf_ioctl __P((struct ifnet *, u_long, caddr_t)); 197 1.5.2.2 bouyer #endif 198 1.5.2.2 bouyer 199 1.5.2.2 bouyer /* ARGSUSED */ 200 1.5.2.2 bouyer void 201 1.5.2.2 bouyer stfattach(count) 202 1.5.2.2 bouyer int count; 203 1.5.2.2 bouyer { 204 1.5.2.2 bouyer 205 1.5.2.2 bouyer LIST_INIT(&stf_softc_list); 206 1.5.2.2 bouyer if_clone_attach(&stf_cloner); 207 1.5.2.2 bouyer } 208 1.5.2.2 bouyer 209 1.5.2.2 bouyer int 210 1.5.2.2 bouyer stf_clone_create(ifc, unit) 211 1.5.2.2 bouyer struct if_clone *ifc; 212 1.5.2.2 bouyer int unit; 213 1.5.2.2 bouyer { 214 1.5.2.2 bouyer struct stf_softc *sc; 215 1.5.2.2 bouyer 216 1.5.2.2 bouyer if (LIST_FIRST(&stf_softc_list) != NULL) { 217 1.5.2.2 bouyer /* Only one stf interface is allowed. */ 218 1.5.2.2 bouyer return (EEXIST); 219 1.5.2.2 bouyer } 220 1.5.2.2 bouyer 221 1.5.2.2 bouyer sc = malloc(sizeof(struct stf_softc), M_DEVBUF, M_WAIT); 222 1.5.2.2 bouyer bzero(sc, sizeof(struct stf_softc)); 223 1.5.2.2 bouyer 224 1.5.2.2 bouyer sprintf(sc->sc_if.if_xname, "%s%d", ifc->ifc_name, unit); 225 1.5.2.2 bouyer 226 1.5.2.2 bouyer sc->encap_cookie = encap_attach_func(AF_INET, IPPROTO_IPV6, 227 1.5.2.2 bouyer stf_encapcheck, &in_stf_protosw, sc); 228 1.5.2.2 bouyer if (sc->encap_cookie == NULL) { 229 1.5.2.2 bouyer printf("%s: unable to attach encap\n", if_name(&sc->sc_if)); 230 1.5.2.2 bouyer free(sc, M_DEVBUF); 231 1.5.2.2 bouyer return (EIO); /* XXX */ 232 1.5.2.2 bouyer } 233 1.5.2.2 bouyer 234 1.5.2.2 bouyer sc->sc_if.if_mtu = IPV6_MMTU; 235 1.5.2.2 bouyer sc->sc_if.if_flags = 0; 236 1.5.2.2 bouyer sc->sc_if.if_ioctl = stf_ioctl; 237 1.5.2.2 bouyer sc->sc_if.if_output = stf_output; 238 1.5.2.2 bouyer sc->sc_if.if_type = IFT_STF; 239 1.5.2.4 bouyer sc->sc_if.if_dlt = DLT_NULL; 240 1.5.2.2 bouyer #if defined(__FreeBSD__) && __FreeBSD__ >= 4 241 1.5.2.2 bouyer sc->sc_if.if_snd.ifq_maxlen = IFQ_MAXLEN; 242 1.5.2.2 bouyer #endif 243 1.5.2.2 bouyer if_attach(&sc->sc_if); 244 1.5.2.5 bouyer if_alloc_sadl(&sc->sc_if); 245 1.5.2.2 bouyer #if NBPFILTER > 0 246 1.5.2.2 bouyer bpfattach(&sc->sc_if, DLT_NULL, sizeof(u_int)); 247 1.5.2.2 bouyer #endif 248 1.5.2.2 bouyer LIST_INSERT_HEAD(&stf_softc_list, sc, sc_list); 249 1.5.2.2 bouyer return (0); 250 1.5.2.2 bouyer } 251 1.5.2.2 bouyer 252 1.5.2.2 bouyer void 253 1.5.2.2 bouyer stf_clone_destroy(ifp) 254 1.5.2.2 bouyer struct ifnet *ifp; 255 1.5.2.2 bouyer { 256 1.5.2.2 bouyer struct stf_softc *sc = (void *) ifp; 257 1.5.2.2 bouyer 258 1.5.2.2 bouyer LIST_REMOVE(sc, sc_list); 259 1.5.2.2 bouyer encap_detach(sc->encap_cookie); 260 1.5.2.2 bouyer #if NBPFILTER > 0 261 1.5.2.2 bouyer bpfdetach(ifp); 262 1.5.2.2 bouyer #endif 263 1.5.2.2 bouyer if_detach(ifp); 264 1.5.2.2 bouyer free(sc, M_DEVBUF); 265 1.5.2.2 bouyer } 266 1.5.2.2 bouyer 267 1.5.2.2 bouyer #ifdef __FreeBSD__ 268 1.5.2.2 bouyer PSEUDO_SET(stfattach, if_stf); 269 1.5.2.2 bouyer #endif 270 1.5.2.2 bouyer 271 1.5.2.2 bouyer static int 272 1.5.2.2 bouyer stf_encapcheck(m, off, proto, arg) 273 1.5.2.2 bouyer const struct mbuf *m; 274 1.5.2.2 bouyer int off; 275 1.5.2.2 bouyer int proto; 276 1.5.2.2 bouyer void *arg; 277 1.5.2.2 bouyer { 278 1.5.2.2 bouyer struct ip ip; 279 1.5.2.2 bouyer struct in6_ifaddr *ia6; 280 1.5.2.2 bouyer struct stf_softc *sc; 281 1.5.2.2 bouyer struct in_addr a, b; 282 1.5.2.2 bouyer 283 1.5.2.2 bouyer sc = (struct stf_softc *)arg; 284 1.5.2.2 bouyer if (sc == NULL) 285 1.5.2.2 bouyer return 0; 286 1.5.2.2 bouyer 287 1.5.2.2 bouyer if ((sc->sc_if.if_flags & IFF_UP) == 0) 288 1.5.2.2 bouyer return 0; 289 1.5.2.2 bouyer 290 1.5.2.2 bouyer if (proto != IPPROTO_IPV6) 291 1.5.2.2 bouyer return 0; 292 1.5.2.2 bouyer 293 1.5.2.2 bouyer /* LINTED const cast */ 294 1.5.2.2 bouyer m_copydata((struct mbuf *)m, 0, sizeof(ip), (caddr_t)&ip); 295 1.5.2.2 bouyer 296 1.5.2.2 bouyer if (ip.ip_v != 4) 297 1.5.2.2 bouyer return 0; 298 1.5.2.2 bouyer 299 1.5.2.2 bouyer ia6 = stf_getsrcifa6(&sc->sc_if); 300 1.5.2.2 bouyer if (ia6 == NULL) 301 1.5.2.2 bouyer return 0; 302 1.5.2.2 bouyer 303 1.5.2.2 bouyer /* 304 1.5.2.2 bouyer * check if IPv4 dst matches the IPv4 address derived from the 305 1.5.2.2 bouyer * local 6to4 address. 306 1.5.2.2 bouyer * success on: dst = 10.1.1.1, ia6->ia_addr = 2002:0a01:0101:... 307 1.5.2.2 bouyer */ 308 1.5.2.2 bouyer if (bcmp(GET_V4(&ia6->ia_addr.sin6_addr), &ip.ip_dst, 309 1.5.2.2 bouyer sizeof(ip.ip_dst)) != 0) 310 1.5.2.2 bouyer return 0; 311 1.5.2.2 bouyer 312 1.5.2.2 bouyer /* 313 1.5.2.2 bouyer * check if IPv4 src matches the IPv4 address derived from the 314 1.5.2.2 bouyer * local 6to4 address masked by prefixmask. 315 1.5.2.2 bouyer * success on: src = 10.1.1.1, ia6->ia_addr = 2002:0a00:.../24 316 1.5.2.2 bouyer * fail on: src = 10.1.1.1, ia6->ia_addr = 2002:0b00:.../24 317 1.5.2.2 bouyer */ 318 1.5.2.2 bouyer bzero(&a, sizeof(a)); 319 1.5.2.2 bouyer a.s_addr = GET_V4(&ia6->ia_addr.sin6_addr)->s_addr; 320 1.5.2.2 bouyer a.s_addr &= GET_V4(&ia6->ia_prefixmask.sin6_addr)->s_addr; 321 1.5.2.2 bouyer b = ip.ip_src; 322 1.5.2.2 bouyer b.s_addr &= GET_V4(&ia6->ia_prefixmask.sin6_addr)->s_addr; 323 1.5.2.2 bouyer if (a.s_addr != b.s_addr) 324 1.5.2.2 bouyer return 0; 325 1.5.2.2 bouyer 326 1.5.2.2 bouyer /* stf interface makes single side match only */ 327 1.5.2.2 bouyer return 32; 328 1.5.2.2 bouyer } 329 1.5.2.2 bouyer 330 1.5.2.2 bouyer static struct in6_ifaddr * 331 1.5.2.2 bouyer stf_getsrcifa6(ifp) 332 1.5.2.2 bouyer struct ifnet *ifp; 333 1.5.2.2 bouyer { 334 1.5.2.2 bouyer struct ifaddr *ia; 335 1.5.2.2 bouyer struct in_ifaddr *ia4; 336 1.5.2.2 bouyer struct sockaddr_in6 *sin6; 337 1.5.2.2 bouyer struct in_addr in; 338 1.5.2.2 bouyer 339 1.5.2.2 bouyer #if defined(__bsdi__) || (defined(__FreeBSD__) && __FreeBSD__ < 3) 340 1.5.2.2 bouyer for (ia = ifp->if_addrlist; ia; ia = ia->ifa_next) 341 1.5.2.2 bouyer #else 342 1.5.2.2 bouyer for (ia = ifp->if_addrlist.tqh_first; 343 1.5.2.2 bouyer ia; 344 1.5.2.2 bouyer ia = ia->ifa_list.tqe_next) 345 1.5.2.2 bouyer #endif 346 1.5.2.2 bouyer { 347 1.5.2.2 bouyer if (ia->ifa_addr == NULL) 348 1.5.2.2 bouyer continue; 349 1.5.2.2 bouyer if (ia->ifa_addr->sa_family != AF_INET6) 350 1.5.2.2 bouyer continue; 351 1.5.2.2 bouyer sin6 = (struct sockaddr_in6 *)ia->ifa_addr; 352 1.5.2.2 bouyer if (!IN6_IS_ADDR_6TO4(&sin6->sin6_addr)) 353 1.5.2.2 bouyer continue; 354 1.5.2.2 bouyer 355 1.5.2.2 bouyer bcopy(GET_V4(&sin6->sin6_addr), &in, sizeof(in)); 356 1.5.2.2 bouyer #ifdef __NetBSD__ 357 1.5.2.2 bouyer INADDR_TO_IA(in, ia4); 358 1.5.2.2 bouyer #else 359 1.5.2.2 bouyer #ifdef __OpenBSD__ 360 1.5.2.2 bouyer for (ia4 = in_ifaddr.tqh_first; 361 1.5.2.2 bouyer ia4; 362 1.5.2.2 bouyer ia4 = ia4->ia_list.tqe_next) 363 1.5.2.2 bouyer #elif defined(__FreeBSD__) && __FreeBSD__ >= 3 364 1.5.2.2 bouyer for (ia4 = TAILQ_FIRST(&in_ifaddrhead); 365 1.5.2.2 bouyer ia4; 366 1.5.2.2 bouyer ia4 = TAILQ_NEXT(ia4, ia_link)) 367 1.5.2.2 bouyer #else 368 1.5.2.2 bouyer for (ia4 = in_ifaddr; ia4 != NULL; ia4 = ia4->ia_next) 369 1.5.2.2 bouyer #endif 370 1.5.2.2 bouyer { 371 1.5.2.2 bouyer if (ia4->ia_addr.sin_addr.s_addr == in.s_addr) 372 1.5.2.2 bouyer break; 373 1.5.2.2 bouyer } 374 1.5.2.2 bouyer #endif 375 1.5.2.2 bouyer if (ia4 == NULL) 376 1.5.2.2 bouyer continue; 377 1.5.2.2 bouyer 378 1.5.2.2 bouyer return (struct in6_ifaddr *)ia; 379 1.5.2.2 bouyer } 380 1.5.2.2 bouyer 381 1.5.2.2 bouyer return NULL; 382 1.5.2.2 bouyer } 383 1.5.2.2 bouyer 384 1.5.2.2 bouyer static int 385 1.5.2.2 bouyer stf_output(ifp, m, dst, rt) 386 1.5.2.2 bouyer struct ifnet *ifp; 387 1.5.2.2 bouyer struct mbuf *m; 388 1.5.2.2 bouyer struct sockaddr *dst; 389 1.5.2.2 bouyer struct rtentry *rt; 390 1.5.2.2 bouyer { 391 1.5.2.2 bouyer struct stf_softc *sc; 392 1.5.2.2 bouyer struct sockaddr_in6 *dst6; 393 1.5.2.2 bouyer struct sockaddr_in *dst4; 394 1.5.2.2 bouyer u_int8_t tos; 395 1.5.2.2 bouyer struct ip *ip; 396 1.5.2.2 bouyer struct ip6_hdr *ip6; 397 1.5.2.2 bouyer struct in6_ifaddr *ia6; 398 1.5.2.2 bouyer 399 1.5.2.2 bouyer sc = (struct stf_softc*)ifp; 400 1.5.2.2 bouyer dst6 = (struct sockaddr_in6 *)dst; 401 1.5.2.2 bouyer 402 1.5.2.2 bouyer /* just in case */ 403 1.5.2.2 bouyer if ((ifp->if_flags & IFF_UP) == 0) { 404 1.5.2.2 bouyer m_freem(m); 405 1.5.2.2 bouyer return ENETDOWN; 406 1.5.2.2 bouyer } 407 1.5.2.2 bouyer 408 1.5.2.2 bouyer /* 409 1.5.2.2 bouyer * If we don't have an ip4 address that match my inner ip6 address, 410 1.5.2.2 bouyer * we shouldn't generate output. Without this check, we'll end up 411 1.5.2.2 bouyer * using wrong IPv4 source. 412 1.5.2.2 bouyer */ 413 1.5.2.2 bouyer ia6 = stf_getsrcifa6(ifp); 414 1.5.2.2 bouyer if (ia6 == NULL) { 415 1.5.2.2 bouyer m_freem(m); 416 1.5.2.2 bouyer return ENETDOWN; 417 1.5.2.2 bouyer } 418 1.5.2.2 bouyer 419 1.5.2.2 bouyer if (m->m_len < sizeof(*ip6)) { 420 1.5.2.2 bouyer m = m_pullup(m, sizeof(*ip6)); 421 1.5.2.2 bouyer if (!m) 422 1.5.2.2 bouyer return ENOBUFS; 423 1.5.2.2 bouyer } 424 1.5.2.2 bouyer ip6 = mtod(m, struct ip6_hdr *); 425 1.5.2.2 bouyer tos = (ntohl(ip6->ip6_flow) >> 20) & 0xff; 426 1.5.2.2 bouyer 427 1.5.2.2 bouyer M_PREPEND(m, sizeof(struct ip), M_DONTWAIT); 428 1.5.2.2 bouyer if (m && m->m_len < sizeof(struct ip)) 429 1.5.2.2 bouyer m = m_pullup(m, sizeof(struct ip)); 430 1.5.2.2 bouyer if (m == NULL) 431 1.5.2.2 bouyer return ENOBUFS; 432 1.5.2.2 bouyer ip = mtod(m, struct ip *); 433 1.5.2.2 bouyer 434 1.5.2.2 bouyer bzero(ip, sizeof(*ip)); 435 1.5.2.2 bouyer 436 1.5.2.2 bouyer bcopy(GET_V4(&((struct sockaddr_in6 *)&ia6->ia_addr)->sin6_addr), 437 1.5.2.2 bouyer &ip->ip_src, sizeof(ip->ip_src)); 438 1.5.2.2 bouyer bcopy(GET_V4(&dst6->sin6_addr), &ip->ip_dst, sizeof(ip->ip_dst)); 439 1.5.2.2 bouyer ip->ip_p = IPPROTO_IPV6; 440 1.5.2.2 bouyer ip->ip_ttl = ip_gif_ttl; /*XXX*/ 441 1.5.2.2 bouyer ip->ip_len = m->m_pkthdr.len; /*host order*/ 442 1.5.2.2 bouyer if (ifp->if_flags & IFF_LINK1) 443 1.5.2.2 bouyer ip_ecn_ingress(ECN_ALLOWED, &ip->ip_tos, &tos); 444 1.5.2.2 bouyer 445 1.5.2.2 bouyer dst4 = (struct sockaddr_in *)&sc->sc_ro.ro_dst; 446 1.5.2.2 bouyer if (dst4->sin_family != AF_INET || 447 1.5.2.2 bouyer bcmp(&dst4->sin_addr, &ip->ip_dst, sizeof(ip->ip_dst)) != 0) { 448 1.5.2.2 bouyer /* cache route doesn't match */ 449 1.5.2.2 bouyer dst4->sin_family = AF_INET; 450 1.5.2.2 bouyer dst4->sin_len = sizeof(struct sockaddr_in); 451 1.5.2.2 bouyer bcopy(&ip->ip_dst, &dst4->sin_addr, sizeof(dst4->sin_addr)); 452 1.5.2.2 bouyer if (sc->sc_ro.ro_rt) { 453 1.5.2.2 bouyer RTFREE(sc->sc_ro.ro_rt); 454 1.5.2.2 bouyer sc->sc_ro.ro_rt = NULL; 455 1.5.2.2 bouyer } 456 1.5.2.2 bouyer } 457 1.5.2.2 bouyer 458 1.5.2.2 bouyer if (sc->sc_ro.ro_rt == NULL) { 459 1.5.2.2 bouyer rtalloc(&sc->sc_ro); 460 1.5.2.2 bouyer if (sc->sc_ro.ro_rt == NULL) { 461 1.5.2.2 bouyer m_freem(m); 462 1.5.2.2 bouyer return ENETUNREACH; 463 1.5.2.2 bouyer } 464 1.5.2.2 bouyer } 465 1.5.2.2 bouyer 466 1.5.2.2 bouyer #ifndef __OpenBSD__ 467 1.5.2.2 bouyer return ip_output(m, NULL, &sc->sc_ro, 0, NULL); 468 1.5.2.2 bouyer #else 469 1.5.2.2 bouyer return ip_output(m, NULL, &sc->sc_ro, 0, NULL, NULL); 470 1.5.2.2 bouyer #endif 471 1.5.2.2 bouyer } 472 1.5.2.2 bouyer 473 1.5.2.2 bouyer static int 474 1.5.2.6 bouyer stf_checkaddr4(sc, in, inifp) 475 1.5.2.6 bouyer struct stf_softc *sc; 476 1.5.2.2 bouyer struct in_addr *in; 477 1.5.2.6 bouyer struct ifnet *inifp; /* incoming interface */ 478 1.5.2.2 bouyer { 479 1.5.2.2 bouyer struct in_ifaddr *ia4; 480 1.5.2.2 bouyer 481 1.5.2.2 bouyer /* 482 1.5.2.2 bouyer * reject packets with the following address: 483 1.5.2.2 bouyer * 224.0.0.0/4 0.0.0.0/8 127.0.0.0/8 255.0.0.0/8 484 1.5.2.2 bouyer */ 485 1.5.2.2 bouyer if (IN_MULTICAST(in->s_addr)) 486 1.5.2.2 bouyer return -1; 487 1.5.2.2 bouyer switch ((ntohl(in->s_addr) & 0xff000000) >> 24) { 488 1.5.2.2 bouyer case 0: case 127: case 255: 489 1.5.2.2 bouyer return -1; 490 1.5.2.2 bouyer } 491 1.5.2.2 bouyer 492 1.5.2.2 bouyer /* 493 1.5.2.2 bouyer * reject packets with broadcast 494 1.5.2.2 bouyer */ 495 1.5.2.2 bouyer #if defined(__OpenBSD__) || defined(__NetBSD__) 496 1.5.2.2 bouyer for (ia4 = in_ifaddr.tqh_first; ia4; ia4 = ia4->ia_list.tqe_next) 497 1.5.2.2 bouyer #elif defined(__FreeBSD__) && __FreeBSD__ >= 3 498 1.5.2.2 bouyer for (ia4 = TAILQ_FIRST(&in_ifaddrhead); 499 1.5.2.2 bouyer ia4; 500 1.5.2.2 bouyer ia4 = TAILQ_NEXT(ia4, ia_link)) 501 1.5.2.2 bouyer #else 502 1.5.2.2 bouyer for (ia4 = in_ifaddr; ia4 != NULL; ia4 = ia4->ia_next) 503 1.5.2.2 bouyer #endif 504 1.5.2.2 bouyer { 505 1.5.2.2 bouyer if ((ia4->ia_ifa.ifa_ifp->if_flags & IFF_BROADCAST) == 0) 506 1.5.2.2 bouyer continue; 507 1.5.2.2 bouyer if (in->s_addr == ia4->ia_broadaddr.sin_addr.s_addr) 508 1.5.2.2 bouyer return -1; 509 1.5.2.2 bouyer } 510 1.5.2.2 bouyer 511 1.5.2.2 bouyer /* 512 1.5.2.2 bouyer * perform ingress filter 513 1.5.2.2 bouyer */ 514 1.5.2.6 bouyer if (sc && (sc->sc_if.if_flags & IFF_LINK2) == 0 && inifp) { 515 1.5.2.2 bouyer struct sockaddr_in sin; 516 1.5.2.2 bouyer struct rtentry *rt; 517 1.5.2.2 bouyer 518 1.5.2.2 bouyer bzero(&sin, sizeof(sin)); 519 1.5.2.2 bouyer sin.sin_family = AF_INET; 520 1.5.2.2 bouyer sin.sin_len = sizeof(struct sockaddr_in); 521 1.5.2.2 bouyer sin.sin_addr = *in; 522 1.5.2.2 bouyer #ifdef __FreeBSD__ 523 1.5.2.2 bouyer rt = rtalloc1((struct sockaddr *)&sin, 0, 0UL); 524 1.5.2.2 bouyer #else 525 1.5.2.2 bouyer rt = rtalloc1((struct sockaddr *)&sin, 0); 526 1.5.2.2 bouyer #endif 527 1.5.2.6 bouyer if (!rt || rt->rt_ifp != inifp) { 528 1.5.2.6 bouyer #if 0 529 1.5.2.6 bouyer log(LOG_WARNING, "%s: packet from 0x%x dropped " 530 1.5.2.6 bouyer "due to ingress filter\n", if_name(&sc->sc_if), 531 1.5.2.6 bouyer (u_int32_t)ntohl(sin.sin_addr.s_addr)); 532 1.5.2.6 bouyer #endif 533 1.5.2.6 bouyer if (rt) 534 1.5.2.6 bouyer rtfree(rt); 535 1.5.2.2 bouyer return -1; 536 1.5.2.2 bouyer } 537 1.5.2.2 bouyer rtfree(rt); 538 1.5.2.2 bouyer } 539 1.5.2.2 bouyer 540 1.5.2.2 bouyer return 0; 541 1.5.2.2 bouyer } 542 1.5.2.2 bouyer 543 1.5.2.2 bouyer static int 544 1.5.2.6 bouyer stf_checkaddr6(sc, in6, inifp) 545 1.5.2.6 bouyer struct stf_softc *sc; 546 1.5.2.2 bouyer struct in6_addr *in6; 547 1.5.2.6 bouyer struct ifnet *inifp; /* incoming interface */ 548 1.5.2.2 bouyer { 549 1.5.2.2 bouyer /* 550 1.5.2.2 bouyer * check 6to4 addresses 551 1.5.2.2 bouyer */ 552 1.5.2.2 bouyer if (IN6_IS_ADDR_6TO4(in6)) 553 1.5.2.6 bouyer return stf_checkaddr4(sc, GET_V4(in6), inifp); 554 1.5.2.2 bouyer 555 1.5.2.2 bouyer /* 556 1.5.2.2 bouyer * reject anything that look suspicious. the test is implemented 557 1.5.2.2 bouyer * in ip6_input too, but we check here as well to 558 1.5.2.2 bouyer * (1) reject bad packets earlier, and 559 1.5.2.2 bouyer * (2) to be safe against future ip6_input change. 560 1.5.2.2 bouyer */ 561 1.5.2.2 bouyer if (IN6_IS_ADDR_V4COMPAT(in6) || IN6_IS_ADDR_V4MAPPED(in6)) 562 1.5.2.2 bouyer return -1; 563 1.5.2.2 bouyer 564 1.5.2.2 bouyer return 0; 565 1.5.2.2 bouyer } 566 1.5.2.2 bouyer 567 1.5.2.2 bouyer void 568 1.5.2.2 bouyer #if __STDC__ 569 1.5.2.2 bouyer in_stf_input(struct mbuf *m, ...) 570 1.5.2.2 bouyer #else 571 1.5.2.2 bouyer in_stf_input(m, va_alist) 572 1.5.2.6 bouyer struct mbuf *m; 573 1.5.2.2 bouyer #endif 574 1.5.2.2 bouyer { 575 1.5.2.2 bouyer int off, proto; 576 1.5.2.2 bouyer struct stf_softc *sc; 577 1.5.2.2 bouyer struct ip *ip; 578 1.5.2.2 bouyer struct ip6_hdr *ip6; 579 1.5.2.2 bouyer u_int8_t otos, itos; 580 1.5.2.2 bouyer int s, isr; 581 1.5.2.2 bouyer struct ifqueue *ifq = NULL; 582 1.5.2.2 bouyer struct ifnet *ifp; 583 1.5.2.2 bouyer va_list ap; 584 1.5.2.2 bouyer 585 1.5.2.2 bouyer va_start(ap, m); 586 1.5.2.2 bouyer off = va_arg(ap, int); 587 1.5.2.2 bouyer proto = va_arg(ap, int); 588 1.5.2.2 bouyer va_end(ap); 589 1.5.2.2 bouyer 590 1.5.2.2 bouyer if (proto != IPPROTO_IPV6) { 591 1.5.2.2 bouyer m_freem(m); 592 1.5.2.2 bouyer return; 593 1.5.2.2 bouyer } 594 1.5.2.2 bouyer 595 1.5.2.2 bouyer ip = mtod(m, struct ip *); 596 1.5.2.2 bouyer 597 1.5.2.2 bouyer sc = (struct stf_softc *)encap_getarg(m); 598 1.5.2.2 bouyer 599 1.5.2.2 bouyer if (sc == NULL || (sc->sc_if.if_flags & IFF_UP) == 0) { 600 1.5.2.2 bouyer m_freem(m); 601 1.5.2.2 bouyer return; 602 1.5.2.2 bouyer } 603 1.5.2.2 bouyer 604 1.5.2.2 bouyer ifp = &sc->sc_if; 605 1.5.2.2 bouyer 606 1.5.2.2 bouyer /* 607 1.5.2.2 bouyer * perform sanity check against outer src/dst. 608 1.5.2.2 bouyer * for source, perform ingress filter as well. 609 1.5.2.2 bouyer */ 610 1.5.2.6 bouyer if (stf_checkaddr4(sc, &ip->ip_dst, NULL) < 0 || 611 1.5.2.6 bouyer stf_checkaddr4(sc, &ip->ip_src, m->m_pkthdr.rcvif) < 0) { 612 1.5.2.2 bouyer m_freem(m); 613 1.5.2.2 bouyer return; 614 1.5.2.2 bouyer } 615 1.5.2.2 bouyer 616 1.5.2.2 bouyer otos = ip->ip_tos; 617 1.5.2.2 bouyer m_adj(m, off); 618 1.5.2.2 bouyer 619 1.5.2.2 bouyer if (m->m_len < sizeof(*ip6)) { 620 1.5.2.2 bouyer m = m_pullup(m, sizeof(*ip6)); 621 1.5.2.2 bouyer if (!m) 622 1.5.2.2 bouyer return; 623 1.5.2.2 bouyer } 624 1.5.2.2 bouyer ip6 = mtod(m, struct ip6_hdr *); 625 1.5.2.2 bouyer 626 1.5.2.2 bouyer /* 627 1.5.2.2 bouyer * perform sanity check against inner src/dst. 628 1.5.2.2 bouyer * for source, perform ingress filter as well. 629 1.5.2.2 bouyer */ 630 1.5.2.6 bouyer if (stf_checkaddr6(sc, &ip6->ip6_dst, NULL) < 0 || 631 1.5.2.6 bouyer stf_checkaddr6(sc, &ip6->ip6_src, m->m_pkthdr.rcvif) < 0) { 632 1.5.2.2 bouyer m_freem(m); 633 1.5.2.2 bouyer return; 634 1.5.2.2 bouyer } 635 1.5.2.2 bouyer 636 1.5.2.2 bouyer itos = (ntohl(ip6->ip6_flow) >> 20) & 0xff; 637 1.5.2.2 bouyer if ((ifp->if_flags & IFF_LINK1) != 0) 638 1.5.2.2 bouyer ip_ecn_egress(ECN_ALLOWED, &otos, &itos); 639 1.5.2.2 bouyer ip6->ip6_flow &= ~htonl(0xff << 20); 640 1.5.2.2 bouyer ip6->ip6_flow |= htonl((u_int32_t)itos << 20); 641 1.5.2.2 bouyer 642 1.5.2.2 bouyer m->m_pkthdr.rcvif = ifp; 643 1.5.2.2 bouyer 644 1.5.2.2 bouyer #if NBPFILTER > 0 645 1.5.2.2 bouyer if (ifp->if_bpf) { 646 1.5.2.2 bouyer /* 647 1.5.2.2 bouyer * We need to prepend the address family as 648 1.5.2.2 bouyer * a four byte field. Cons up a dummy header 649 1.5.2.2 bouyer * to pacify bpf. This is safe because bpf 650 1.5.2.2 bouyer * will only read from the mbuf (i.e., it won't 651 1.5.2.2 bouyer * try to free it or keep a pointer a to it). 652 1.5.2.2 bouyer */ 653 1.5.2.2 bouyer struct mbuf m0; 654 1.5.2.7 bouyer u_int32_t af = AF_INET6; 655 1.5.2.2 bouyer 656 1.5.2.2 bouyer m0.m_next = m; 657 1.5.2.2 bouyer m0.m_len = 4; 658 1.5.2.2 bouyer m0.m_data = (char *)⁡ 659 1.5.2.2 bouyer 660 1.5.2.2 bouyer #ifdef HAVE_OLD_BPF 661 1.5.2.2 bouyer bpf_mtap(ifp, &m0); 662 1.5.2.2 bouyer #else 663 1.5.2.2 bouyer bpf_mtap(ifp->if_bpf, &m0); 664 1.5.2.2 bouyer #endif 665 1.5.2.2 bouyer } 666 1.5.2.2 bouyer #endif /*NBPFILTER > 0*/ 667 1.5.2.2 bouyer 668 1.5.2.2 bouyer /* 669 1.5.2.2 bouyer * Put the packet to the network layer input queue according to the 670 1.5.2.2 bouyer * specified address family. 671 1.5.2.2 bouyer * See net/if_gif.c for possible issues with packet processing 672 1.5.2.2 bouyer * reorder due to extra queueing. 673 1.5.2.2 bouyer */ 674 1.5.2.2 bouyer ifq = &ip6intrq; 675 1.5.2.2 bouyer isr = NETISR_IPV6; 676 1.5.2.2 bouyer 677 1.5.2.2 bouyer s = splimp(); 678 1.5.2.2 bouyer if (IF_QFULL(ifq)) { 679 1.5.2.2 bouyer IF_DROP(ifq); /* update statistics */ 680 1.5.2.2 bouyer m_freem(m); 681 1.5.2.2 bouyer splx(s); 682 1.5.2.2 bouyer return; 683 1.5.2.2 bouyer } 684 1.5.2.2 bouyer IF_ENQUEUE(ifq, m); 685 1.5.2.2 bouyer schednetisr(isr); 686 1.5.2.2 bouyer ifp->if_ipackets++; 687 1.5.2.2 bouyer ifp->if_ibytes += m->m_pkthdr.len; 688 1.5.2.2 bouyer splx(s); 689 1.5.2.2 bouyer } 690 1.5.2.2 bouyer 691 1.5.2.2 bouyer /* ARGSUSED */ 692 1.5.2.2 bouyer static void 693 1.5.2.5 bouyer stf_rtrequest(cmd, rt, info) 694 1.5.2.2 bouyer int cmd; 695 1.5.2.2 bouyer struct rtentry *rt; 696 1.5.2.5 bouyer struct rt_addrinfo *info; 697 1.5.2.2 bouyer { 698 1.5.2.2 bouyer 699 1.5.2.2 bouyer if (rt) 700 1.5.2.2 bouyer rt->rt_rmx.rmx_mtu = IPV6_MMTU; 701 1.5.2.2 bouyer } 702 1.5.2.2 bouyer 703 1.5.2.2 bouyer static int 704 1.5.2.2 bouyer stf_ioctl(ifp, cmd, data) 705 1.5.2.2 bouyer struct ifnet *ifp; 706 1.5.2.2 bouyer #if defined(__FreeBSD__) && __FreeBSD__ < 3 707 1.5.2.2 bouyer int cmd; 708 1.5.2.2 bouyer #else 709 1.5.2.2 bouyer u_long cmd; 710 1.5.2.2 bouyer #endif 711 1.5.2.2 bouyer caddr_t data; 712 1.5.2.2 bouyer { 713 1.5.2.2 bouyer struct ifaddr *ifa; 714 1.5.2.2 bouyer struct ifreq *ifr; 715 1.5.2.2 bouyer struct sockaddr_in6 *sin6; 716 1.5.2.2 bouyer int error; 717 1.5.2.2 bouyer 718 1.5.2.2 bouyer error = 0; 719 1.5.2.2 bouyer switch (cmd) { 720 1.5.2.2 bouyer case SIOCSIFADDR: 721 1.5.2.2 bouyer ifa = (struct ifaddr *)data; 722 1.5.2.2 bouyer if (ifa == NULL || ifa->ifa_addr->sa_family != AF_INET6) { 723 1.5.2.2 bouyer error = EAFNOSUPPORT; 724 1.5.2.2 bouyer break; 725 1.5.2.2 bouyer } 726 1.5.2.2 bouyer sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 727 1.5.2.2 bouyer if (IN6_IS_ADDR_6TO4(&sin6->sin6_addr)) { 728 1.5.2.2 bouyer ifa->ifa_rtrequest = stf_rtrequest; 729 1.5.2.2 bouyer ifp->if_flags |= IFF_UP; 730 1.5.2.2 bouyer } else 731 1.5.2.2 bouyer error = EINVAL; 732 1.5.2.2 bouyer break; 733 1.5.2.2 bouyer 734 1.5.2.2 bouyer case SIOCADDMULTI: 735 1.5.2.2 bouyer case SIOCDELMULTI: 736 1.5.2.2 bouyer ifr = (struct ifreq *)data; 737 1.5.2.2 bouyer if (ifr && ifr->ifr_addr.sa_family == AF_INET6) 738 1.5.2.2 bouyer ; 739 1.5.2.2 bouyer else 740 1.5.2.2 bouyer error = EAFNOSUPPORT; 741 1.5.2.2 bouyer break; 742 1.5.2.2 bouyer 743 1.5.2.2 bouyer default: 744 1.5.2.2 bouyer error = EINVAL; 745 1.5.2.2 bouyer break; 746 1.5.2.2 bouyer } 747 1.5.2.2 bouyer 748 1.5.2.2 bouyer return error; 749 1.5.2.2 bouyer } 750 1.5.2.2 bouyer 751 1.5.2.2 bouyer #endif /* NSTF > 0 */ 752
Indexes created Thu Oct 16 14:10:15 GMT 2025