1/* 2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 12 unchanged lines hidden (view full) --- 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * |
29 * $FreeBSD: head/sys/netinet6/in6_gif.c 55009 1999-12-22 19:13:38Z shin $ |
30 */ 31 32/* 33 * in6_gif.c 34 */ 35 36#include "opt_inet.h" 37 --- 12 unchanged lines hidden (view full) --- 50#include <netinet/in_systm.h> 51#ifdef INET 52#include <netinet/ip.h> 53#endif 54#include <netinet6/ip6.h> 55#include <netinet6/ip6_var.h> 56#include <netinet6/in6_gif.h> 57#include <netinet6/ip6.h> |
58#include <netinet/ip_ecn.h> 59#include <netinet6/ip6_ecn.h> |
60 61#include <net/if_gif.h> 62 63#include <net/net_osdep.h> 64 65int 66in6_gif_output(ifp, family, m, rt) 67 struct ifnet *ifp; 68 int family; /* family of the packet to be encapsulate. */ 69 struct mbuf *m; 70 struct rtentry *rt; 71{ 72 struct gif_softc *sc = (struct gif_softc*)ifp; 73 struct sockaddr_in6 *dst = (struct sockaddr_in6 *)&sc->gif_ro6.ro_dst; 74 struct sockaddr_in6 *sin6_src = (struct sockaddr_in6 *)sc->gif_psrc; 75 struct sockaddr_in6 *sin6_dst = (struct sockaddr_in6 *)sc->gif_pdst; 76 struct ip6_hdr *ip6; 77 int proto; |
78 u_int8_t itos, otos; |
79 80 if (sin6_src == NULL || sin6_dst == NULL || 81 sin6_src->sin6_family != AF_INET6 || 82 sin6_dst->sin6_family != AF_INET6) { 83 m_freem(m); 84 return EAFNOSUPPORT; 85 } 86 --- 5 unchanged lines hidden (view full) --- 92 93 proto = IPPROTO_IPV4; 94 if (m->m_len < sizeof(*ip)) { 95 m = m_pullup(m, sizeof(*ip)); 96 if (!m) 97 return ENOBUFS; 98 } 99 ip = mtod(m, struct ip *); |
100 itos = ip->ip_tos; |
101 break; 102 } 103#endif 104 case AF_INET6: 105 { 106 struct ip6_hdr *ip6; 107 proto = IPPROTO_IPV6; 108 if (m->m_len < sizeof(*ip6)) { 109 m = m_pullup(m, sizeof(*ip6)); 110 if (!m) 111 return ENOBUFS; 112 } 113 ip6 = mtod(m, struct ip6_hdr *); |
114 itos = (ntohl(ip6->ip6_flow) >> 20) & 0xff; |
115 break; 116 } 117 default: 118#ifdef DIAGNOSTIC 119 printf("in6_gif_output: warning: unknown family %d passed\n", 120 family); 121#endif 122 m_freem(m); --- 30 unchanged lines hidden (view full) --- 153 /* bidirectional configured tunnel mode */ 154 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6_dst->sin6_addr)) 155 ip6->ip6_dst = sin6_dst->sin6_addr; 156 else { 157 m_freem(m); 158 return ENETUNREACH; 159 } 160 } |
161 if (ifp->if_flags & IFF_LINK1) { 162 otos = 0; 163 ip_ecn_ingress(ECN_ALLOWED, &otos, &itos); 164 ip6->ip6_flow |= htonl((u_int32_t)otos << 20); 165 } |
166 167 if (dst->sin6_family != sin6_dst->sin6_family || 168 !IN6_ARE_ADDR_EQUAL(&dst->sin6_addr, &sin6_dst->sin6_addr)) { 169 /* cache route doesn't match */ 170 bzero(dst, sizeof(*dst)); 171 dst->sin6_family = sin6_dst->sin6_family; 172 dst->sin6_len = sizeof(struct sockaddr_in6); 173 dst->sin6_addr = sin6_dst->sin6_addr; --- 6 unchanged lines hidden (view full) --- 180 if (sc->gif_ro6.ro_rt == NULL) { 181 rtalloc((struct route *)&sc->gif_ro6); 182 if (sc->gif_ro6.ro_rt == NULL) { 183 m_freem(m); 184 return ENETUNREACH; 185 } 186 } 187 |
188 return(ip6_output(m, 0, &sc->gif_ro6, 0, 0, NULL)); 189} 190 191int in6_gif_input(mp, offp, proto) 192 struct mbuf **mp; 193 int *offp, proto; 194{ 195 struct mbuf *m = *mp; 196 struct gif_softc *sc; 197 struct ifnet *gifp = NULL; 198 struct ip6_hdr *ip6; 199 int i; 200 int af = 0; |
201 u_int32_t otos; |
202 203 ip6 = mtod(m, struct ip6_hdr *); 204 205#define satoin6(sa) (((struct sockaddr_in6 *)(sa))->sin6_addr) 206 for (i = 0, sc = gif; i < ngif; i++, sc++) { 207 if (sc->gif_psrc == NULL || 208 sc->gif_pdst == NULL || 209 sc->gif_psrc->sa_family != AF_INET6 || --- 15 unchanged lines hidden (view full) --- 225 } 226 } 227 228 if (gifp == NULL) { 229 m_freem(m); 230 ip6stat.ip6s_nogif++; 231 return IPPROTO_DONE; 232 } |
233 234 otos = ip6->ip6_flow; |
235 m_adj(m, *offp); 236 237 switch (proto) { 238#ifdef INET 239 case IPPROTO_IPV4: 240 { 241 struct ip *ip; |
242 u_int8_t otos8; |
243 af = AF_INET; |
244 otos8 = (ntohl(otos) >> 20) & 0xff; |
245 if (m->m_len < sizeof(*ip)) { 246 m = m_pullup(m, sizeof(*ip)); 247 if (!m) 248 return IPPROTO_DONE; 249 } 250 ip = mtod(m, struct ip *); |
251 if (gifp->if_flags & IFF_LINK1) 252 ip_ecn_egress(ECN_ALLOWED, &otos8, &ip->ip_tos); |
253 break; 254 } 255#endif /* INET */ 256 case IPPROTO_IPV6: 257 { 258 struct ip6_hdr *ip6; 259 af = AF_INET6; 260 if (m->m_len < sizeof(*ip6)) { 261 m = m_pullup(m, sizeof(*ip6)); 262 if (!m) 263 return IPPROTO_DONE; 264 } 265 ip6 = mtod(m, struct ip6_hdr *); |
266 if (gifp->if_flags & IFF_LINK1) 267 ip6_ecn_egress(ECN_ALLOWED, &otos, &ip6->ip6_flow); |
268 break; 269 } 270 default: 271 ip6stat.ip6s_nogif++; 272 m_freem(m); 273 return IPPROTO_DONE; 274 } 275 276 gif_input(m, af, gifp); 277 return IPPROTO_DONE; 278} |