1 | /*
|
---|
2 | * TINET (TCP/IP Protocol Stack)
|
---|
3 | *
|
---|
4 | * Copyright (C) 2001-2017 by Dep. of Computer Science and Engineering
|
---|
5 | * Tomakomai National College of Technology, JAPAN
|
---|
6 | *
|
---|
7 | * ä¸è¨èä½æ¨©è
|
---|
8 | ã¯ï¼ä»¥ä¸ã® (1)ï½(4) ã®æ¡ä»¶ãï¼Free Software Foundation
|
---|
9 | * ã«ãã£ã¦å
|
---|
10 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
|
---|
11 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
|
---|
12 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
|
---|
13 | å¸ï¼ä»¥ä¸ï¼
|
---|
14 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
|
---|
15 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
|
---|
16 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
|
---|
17 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
|
---|
18 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
|
---|
19 | * ç¨ã§ããå½¢ã§åé
|
---|
20 | å¸ããå ´åã«ã¯ï¼åé
|
---|
21 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
|
---|
22 | * è
|
---|
23 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
|
---|
24 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
|
---|
25 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
|
---|
26 | * ç¨ã§ããªãå½¢ã§åé
|
---|
27 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®æ¡ä»¶ãæºãããã¨ï¼
|
---|
28 | * (a) åé
|
---|
29 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
|
---|
30 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
|
---|
31 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
|
---|
32 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
|
---|
33 | * 害ãããï¼ä¸è¨èä½æ¨©è
|
---|
34 | ããã³TOPPERSããã¸ã§ã¯ããå
|
---|
35 | 責ãããã¨ï¼
|
---|
36 | *
|
---|
37 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
|
---|
38 | ã
|
---|
39 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
|
---|
40 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
|
---|
41 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
|
---|
42 | *
|
---|
43 | * @(#) $Id: ip6_output.c 313 2017-07-23 04:50:32Z coas-nagasima $
|
---|
44 | */
|
---|
45 |
|
---|
46 | /* $FreeBSD: src/sys/netinet6/ip6_output.c,v 1.43 2002/10/31 19:45:48 ume Exp $ */
|
---|
47 | /* $KAME: ip6_output.c,v 1.279 2002/01/26 06:12:30 jinmei Exp $ */
|
---|
48 |
|
---|
49 | /*
|
---|
50 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
---|
51 | * All rights reserved.
|
---|
52 | *
|
---|
53 | * Redistribution and use in source and binary forms, with or without
|
---|
54 | * modification, are permitted provided that the following conditions
|
---|
55 | * are met:
|
---|
56 | * 1. Redistributions of source code must retain the above copyright
|
---|
57 | * notice, this list of conditions and the following disclaimer.
|
---|
58 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
59 | * notice, this list of conditions and the following disclaimer in the
|
---|
60 | * documentation and/or other materials provided with the distribution.
|
---|
61 | * 3. Neither the name of the project nor the names of its contributors
|
---|
62 | * may be used to endorse or promote products derived from this software
|
---|
63 | * without specific prior written permission.
|
---|
64 | *
|
---|
65 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
|
---|
66 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
---|
67 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
---|
68 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
|
---|
69 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
---|
70 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
---|
71 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
---|
72 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
---|
73 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
---|
74 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
---|
75 | * SUCH DAMAGE.
|
---|
76 | */
|
---|
77 |
|
---|
78 | /*
|
---|
79 | * Copyright (c) 1982, 1986, 1988, 1990, 1993
|
---|
80 | * The Regents of the University of California. All rights reserved.
|
---|
81 | *
|
---|
82 | * Redistribution and use in source and binary forms, with or without
|
---|
83 | * modification, are permitted provided that the following conditions
|
---|
84 | * are met:
|
---|
85 | * 1. Redistributions of source code must retain the above copyright
|
---|
86 | * notice, this list of conditions and the following disclaimer.
|
---|
87 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
88 | * notice, this list of conditions and the following disclaimer in the
|
---|
89 | * documentation and/or other materials provided with the distribution.
|
---|
90 | * 3. All advertising materials mentioning features or use of this software
|
---|
91 | * must display the following acknowledgement:
|
---|
92 | * This product includes software developed by the University of
|
---|
93 | * California, Berkeley and its contributors.
|
---|
94 | * 4. Neither the name of the University nor the names of its contributors
|
---|
95 | * may be used to endorse or promote products derived from this software
|
---|
96 | * without specific prior written permission.
|
---|
97 | *
|
---|
98 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
---|
99 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
---|
100 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
---|
101 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
---|
102 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
---|
103 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
---|
104 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
---|
105 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
---|
106 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
---|
107 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
---|
108 | * SUCH DAMAGE.
|
---|
109 | *
|
---|
110 | * @(#)ip_output.c 8.3 (Berkeley) 1/21/94
|
---|
111 | */
|
---|
112 |
|
---|
113 | #include <string.h>
|
---|
114 |
|
---|
115 | #ifdef TARGET_KERNEL_ASP
|
---|
116 |
|
---|
117 | #include <kernel.h>
|
---|
118 | #include <sil.h>
|
---|
119 |
|
---|
120 | #endif /* of #ifdef TARGET_KERNEL_ASP */
|
---|
121 |
|
---|
122 | #ifdef TARGET_KERNEL_JSP
|
---|
123 |
|
---|
124 | #include <s_services.h>
|
---|
125 | #include <t_services.h>
|
---|
126 |
|
---|
127 | #endif /* of #ifdef TARGET_KERNEL_JSP */
|
---|
128 |
|
---|
129 | #include <tinet_defs.h>
|
---|
130 | #include <tinet_config.h>
|
---|
131 |
|
---|
132 | #include <net/if.h>
|
---|
133 | #include <net/if_loop.h>
|
---|
134 | #include <net/if_ppp.h>
|
---|
135 | #include <net/ethernet.h>
|
---|
136 | #include <net/if_arp.h>
|
---|
137 | #include <net/ppp_ipcp.h>
|
---|
138 | #include <net/net.h>
|
---|
139 | #include <net/net_endian.h>
|
---|
140 | #include <net/net_buf.h>
|
---|
141 | #include <net/net_count.h>
|
---|
142 |
|
---|
143 | #include <netinet/in.h>
|
---|
144 | #include <netinet/in_var.h>
|
---|
145 | #include <netinet/ip.h>
|
---|
146 | #include <netinet/ip_var.h>
|
---|
147 | #include <netinet/ip_icmp.h>
|
---|
148 |
|
---|
149 | #include <netinet6/nd6.h>
|
---|
150 |
|
---|
151 | #include <net/if_var.h>
|
---|
152 |
|
---|
153 | #ifdef _IP6_CFG
|
---|
154 |
|
---|
155 | /*
|
---|
156 | * å
|
---|
157 | ¨åå¤æ°
|
---|
158 | */
|
---|
159 |
|
---|
160 | /* ãªã³ã¯ MTU */
|
---|
161 |
|
---|
162 | uint32_t linkmtu = IF_MTU;
|
---|
163 |
|
---|
164 | /*
|
---|
165 | * å±æå¤æ°
|
---|
166 | */
|
---|
167 |
|
---|
168 | #ifdef IP6_CFG_FRAGMENT
|
---|
169 |
|
---|
170 | static uint32_t ip6_id;
|
---|
171 |
|
---|
172 | #endif /* of #ifdef IP6_CFG_FRAGMENT */
|
---|
173 |
|
---|
174 | /*
|
---|
175 | * ip6_output -- IPv6 ã®åºåé¢æ°
|
---|
176 | */
|
---|
177 |
|
---|
178 | ER
|
---|
179 | ip6_output (T_NET_BUF *output, uint16_t flags, TMO tmout)
|
---|
180 | {
|
---|
181 | T_IP6_HDR *ip6h;
|
---|
182 | const T_IN6_ADDR *gw;
|
---|
183 | T_IFNET *ifp = IF_GET_IFNET();
|
---|
184 | ER error = E_OK;
|
---|
185 |
|
---|
186 | #ifdef IP6_CFG_FRAGMENT
|
---|
187 |
|
---|
188 | T_IP6_HDR *fip6h;
|
---|
189 | T_IP6_FRAG_HDR *fip6f;
|
---|
190 | T_NET_BUF *frag;
|
---|
191 | uint32_t mtu, id;
|
---|
192 | uint16_t plen, foff, flen;
|
---|
193 | uint8_t nextproto;
|
---|
194 | bool_t alwaysfrag = false;
|
---|
195 |
|
---|
196 | #endif /* of #ifdef IP6_CFG_FRAGMENT */
|
---|
197 |
|
---|
198 | ip6h = GET_IP6_HDR(output);
|
---|
199 |
|
---|
200 | NET_COUNT_IP6(net_count_ip6[NC_IP6_OUT_OCTETS],
|
---|
201 | GET_IP6_HDR_SIZE(output) + GET_IP6_SDU_SIZE(output));
|
---|
202 | NET_COUNT_IP6(net_count_ip6[NC_IP6_OUT_PACKETS], 1);
|
---|
203 | NET_COUNT_MIB(in6_ifstat.ipv6IfStatsOutRequests, 1);
|
---|
204 |
|
---|
205 | /*
|
---|
206 | * éè¤ã¢ãã¬ã¹æ¤åºè¦è«ä»¥å¤ã«ã¯ãéä¿¡å
|
---|
207 | ã¢ãã¬ã¹ã«
|
---|
208 | * ç¡æå®ãæå®ã§ããªãã
|
---|
209 | */
|
---|
210 | if (IN6_IS_ADDR_UNSPECIFIED(&ip6h->src) && (flags & IPV6_OUT_FLG_DAD) == 0) {
|
---|
211 | error = E_PAR;
|
---|
212 | goto drop;
|
---|
213 | }
|
---|
214 |
|
---|
215 | /* éä¿¡å
|
---|
216 | ã¢ãã¬ã¹ã«ã¯ãã«ããã£ã¹ãã¢ãã¬ã¹ãæå®ã§ããªãã*/
|
---|
217 | if (IN6_IS_ADDR_MULTICAST(&ip6h->src)) {
|
---|
218 | error = E_PAR;
|
---|
219 | goto drop;
|
---|
220 | }
|
---|
221 |
|
---|
222 | /*
|
---|
223 | * çµè·¯é¸æãè¡ãã
|
---|
224 | */
|
---|
225 | if ((gw = in6_rtalloc(ifp, &ip6h->dst)) == NULL) {
|
---|
226 | error = E_PAR;
|
---|
227 | goto drop;
|
---|
228 | }
|
---|
229 |
|
---|
230 | if (!IN6_IS_ADDR_MULTICAST(&ip6h->dst)) {
|
---|
231 | /* ã¦ããã£ã¹ãã¢ãã¬ã¹ã®å¦ç */
|
---|
232 | }
|
---|
233 | else {
|
---|
234 | /* ãã«ããã£ã¹ãã¢ãã¬ã¹ã®å¦ç */
|
---|
235 | NET_COUNT_MIB(in6_ifstat.ipv6IfStatsOutMcastPkts, 1);
|
---|
236 | if (flags & IPV6_OUT_FLG_HOP_LIMIT)
|
---|
237 | ip6h->hlim = IPV6_OUT_GET_HOP_LIMIT(flags);
|
---|
238 | else
|
---|
239 | ip6h->hlim = IPV6_DEFAULT_MULTICAST_HOPS;
|
---|
240 | }
|
---|
241 |
|
---|
242 | /* Traffic Class 㨠Flow Label ããµãã¼ãããªãã®ã§ 0 ã«è¨å®ããã*/
|
---|
243 | ip6h->vcf = htonl(IP6_MAKE_VCF(IPV6_VERSION, 0));
|
---|
244 |
|
---|
245 | #ifdef IP6_CFG_FRAGMENT
|
---|
246 |
|
---|
247 |
|
---|
248 | #if NUM_IN6_HOSTCACHE_ENTRY > 0
|
---|
249 |
|
---|
250 | mtu = in6_hostcache_getmtu(&ip6h->dst);
|
---|
251 |
|
---|
252 | if (0 < mtu && mtu <= IPV6_MMTU) {
|
---|
253 |
|
---|
254 | /*
|
---|
255 | * Path MTU ãç»é²ããã¦ããå ´åã
|
---|
256 | * MTU ã IPv6 MMTUï¼1280 ãªã¯ãããï¼ä»¥ä¸ã®å ´åã¯ã
|
---|
257 | * MTU ã IPv6 MMTU ã«è¨å®ãåå²ãã¦éä¿¡ããã
|
---|
258 | */
|
---|
259 | mtu = IPV6_MMTU;
|
---|
260 | alwaysfrag = true;
|
---|
261 | }
|
---|
262 | else if (mtu == 0)
|
---|
263 | mtu = linkmtu;
|
---|
264 |
|
---|
265 | #else /* of #if NUM_IN6_HOSTCACHE_ENTRY > 0 */
|
---|
266 |
|
---|
267 | mtu = linkmtu;
|
---|
268 |
|
---|
269 | #endif /* of #if NUM_IN6_HOSTCACHE_ENTRY > 0 */
|
---|
270 |
|
---|
271 | plen = ntohs(ip6h->plen);
|
---|
272 | if (plen + IP6_HDR_SIZE <= mtu && !alwaysfrag) {
|
---|
273 |
|
---|
274 | /* åå²ããå¿
|
---|
275 | è¦ããªãã¨ãã®å¦ç */
|
---|
276 | if ((error = nd6_output(ifp, output, gw, NULL, tmout)) != E_OK) {
|
---|
277 | NET_COUNT_IP6(net_count_ip6[NC_IP6_OUT_ERR_PACKETS], 1);
|
---|
278 | NET_COUNT_MIB(in6_ifstat.ipv6IfStatsOutDiscards, 1);
|
---|
279 | }
|
---|
280 | }
|
---|
281 | else {
|
---|
282 |
|
---|
283 | /* æç ID ãè¨å®ããã*/
|
---|
284 | id = ip6_id ++;
|
---|
285 |
|
---|
286 | /* MTU ã IPv6 ã®æ大ãã±ãããµã¤ãºãè¶
|
---|
287 | ããªãããã«ããã*/
|
---|
288 | if (mtu > IPV6_MAXPACKET)
|
---|
289 | mtu = IPV6_MAXPACKET;
|
---|
290 |
|
---|
291 | /*
|
---|
292 | * MTU ãããåå²ä¸è½é¨åï¼TINET-1.4 ã§ã¯ãåå²ããã以å¤ã®
|
---|
293 | * æ¡å¼µãããã®åºåã¯æªå®è£
|
---|
294 | ã®ãã 0 ãªã¯ãããï¼
|
---|
295 | * ã¨æçãããã®ãµã¤ãºãå¼ããã¨ãã8 ãªã¯ããã以ä¸ãªããã°
|
---|
296 | * åå²ãã¦éä¿¡ã§ããªãããã¨ã©ã¼ã«ããã
|
---|
297 | */
|
---|
298 | if (((mtu - sizeof(T_IP6_FRAG_HDR)) & ~7) < 8) {
|
---|
299 | error = E_PAR;
|
---|
300 | goto drop;
|
---|
301 | }
|
---|
302 |
|
---|
303 | /*
|
---|
304 | * IPv6 ãããã® next ãã£ã¼ã«ãã«è¨å®ããå¤ã¯ãæçãããã
|
---|
305 | * æçãããã® next ãã£ã¼ã«ãã«è¨å®ããå¤ã¯ã
|
---|
306 | * å
|
---|
307 | ã®ãã¼ã¿ã°ã©ã ã® next ãã£ã¼ã«ãã®å¤ã
|
---|
308 | */
|
---|
309 | nextproto = ip6h->next;
|
---|
310 | ip6h->next = IPPROTO_FRAGMENT;
|
---|
311 |
|
---|
312 | /* åå²ãã¦éä¿¡ããã*/
|
---|
313 | NET_COUNT_IP6(net_count_ip6[NC_IP6_FRAG_OUT], 1);
|
---|
314 | for (foff = 0; foff < plen; foff += flen) {
|
---|
315 |
|
---|
316 | /* æçã®é·ããè¨ç®ãã8 ãªã¯ãããå¢çã«èª¿æ´ããã*/
|
---|
317 | if (foff + (mtu - (IP6_HDR_SIZE + sizeof(T_IP6_FRAG_HDR))) < plen)
|
---|
318 | flen = (mtu - (IP6_HDR_SIZE + sizeof(T_IP6_FRAG_HDR))) >> 3 << 3;
|
---|
319 | else
|
---|
320 | flen = plen - foff;
|
---|
321 |
|
---|
322 | /* ãããã¯ã¼ã¯ãããã¡ãç²å¾ããã*/
|
---|
323 | if (tget_net_buf(&frag, flen + IF_IP6_HDR_SIZE + sizeof(T_IP6_FRAG_HDR), TMO_IP6_FRAG_GET_NET_BUF) == E_OK) {
|
---|
324 |
|
---|
325 | /* IPv6 ããããã³ãã¼ããã*/
|
---|
326 | fip6h = GET_IP6_HDR(frag);
|
---|
327 | *fip6h = *ip6h;
|
---|
328 |
|
---|
329 | /* IPv6 ããããåããã*/
|
---|
330 | fip6h->plen = htons(flen + sizeof(T_IP6_FRAG_HDR));
|
---|
331 |
|
---|
332 | /* æçããããåããã*/
|
---|
333 | fip6f = (T_IP6_FRAG_HDR *)GET_IP6_NEXT_HDR(frag);
|
---|
334 | fip6f->off_flag = htons((uint16_t)(foff & ~7));
|
---|
335 | if (foff + (mtu - (IP6_HDR_SIZE + sizeof(T_IP6_FRAG_HDR))) < plen)
|
---|
336 | fip6f->off_flag |= IP6F_MORE_FRAG;
|
---|
337 | fip6f->reserved = 0;
|
---|
338 | fip6f->ident = htonl(id);
|
---|
339 | fip6f->next = nextproto;
|
---|
340 |
|
---|
341 | /* SDU ãã³ãã¼ããã*/
|
---|
342 | memcpy((uint8_t*)(fip6f + 1), GET_IP6_NEXT_HDR(output) + foff, flen);
|
---|
343 | NET_COUNT_IP6(net_count_ip6[NC_IP6_FRAG_OUT_FRAGS], 1);
|
---|
344 | NET_COUNT_MIB(in6_ifstat.ipv6IfStatsOutFragCreates, 1);
|
---|
345 |
|
---|
346 | /* éä¿¡ããã*/
|
---|
347 | if ((error = nd6_output(ifp, frag, gw, NULL, tmout)) != E_OK) {
|
---|
348 | NET_COUNT_MIB(in6_ifstat.ipv6IfStatsOutFragFails, 1);
|
---|
349 | goto drop;
|
---|
350 | }
|
---|
351 | }
|
---|
352 | else {
|
---|
353 | /* ãããã¯ã¼ã¯ãããã¡ãç²å¾ã§ããªããã°ãéä¿¡ããããããã*/
|
---|
354 | error = E_NOMEM;
|
---|
355 | goto drop;
|
---|
356 | }
|
---|
357 | }
|
---|
358 |
|
---|
359 | /* IF ã§ãããã¯ã¼ã¯ãããã¡ãéæ¾ããªããã©ã°ããã§ãã¯ããã*/
|
---|
360 | if ((output->flags & NB_FLG_NOREL_IFOUT) == 0) {
|
---|
361 | syscall(rel_net_buf(output));
|
---|
362 | }
|
---|
363 | else
|
---|
364 | output->flags &= (uint8_t)~NB_FLG_NOREL_IFOUT;
|
---|
365 |
|
---|
366 | NET_COUNT_MIB(in6_ifstat.ipv6IfStatsOutFragOKs, 1);
|
---|
367 | }
|
---|
368 |
|
---|
369 | #else /* #ifdef IP6_CFG_FRAGMENT */
|
---|
370 |
|
---|
371 | if ((error = nd6_output(ifp, output, gw, NULL, tmout)) != E_OK) {
|
---|
372 | NET_COUNT_IP6(net_count_ip6[NC_IP6_OUT_ERR_PACKETS], 1);
|
---|
373 | NET_COUNT_MIB(in6_ifstat.ipv6IfStatsOutDiscards, 1);
|
---|
374 | }
|
---|
375 |
|
---|
376 | #endif /* #ifdef IP6_CFG_FRAGMENT */
|
---|
377 |
|
---|
378 | return error;
|
---|
379 |
|
---|
380 | drop:
|
---|
381 | /* IF ã§ãããã¯ã¼ã¯ãããã¡ãéæ¾ããªããã©ã°ããã§ãã¯ããã*/
|
---|
382 | if ((output->flags & NB_FLG_NOREL_IFOUT) == 0) {
|
---|
383 | syscall(rel_net_buf(output));
|
---|
384 | }
|
---|
385 | else
|
---|
386 | output->flags &= (uint8_t)~NB_FLG_NOREL_IFOUT;
|
---|
387 |
|
---|
388 | NET_COUNT_IP6(net_count_ip6[NC_IP6_OUT_ERR_PACKETS], 1);
|
---|
389 | NET_COUNT_MIB(in6_ifstat.ipv6IfStatsOutDiscards, 1);
|
---|
390 | return error;
|
---|
391 | }
|
---|
392 |
|
---|
393 | #endif /* of #ifdef _IP6_CFG */
|
---|