2 * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org>
3 * based on work by Toshiharu OHNO <tony-o@iij.ad.jp>
4 * Internet Initiative Japan, Inc (IIJ)
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * $FreeBSD: src/usr.sbin/ppp/ipcp.c,v 1.90.2.12 2002/09/28 10:16:25 brian Exp $
31 #include <sys/param.h>
32 #include <netinet/in_systm.h>
33 #include <netinet/in.h>
34 #include <netinet/ip.h>
35 #include <arpa/inet.h>
36 #include <sys/socket.h>
38 #include <net/route.h>
70 #include "throughput.h"
71 #include "slcompress.h"
79 #include "descriptor.h"
100 #define REJECTED(p, x) ((p)->peer_reject & (1<<(x)))
101 #define issep(ch) ((ch) == ' ' || (ch) == '\t')
102 #define isip(ch) (((ch) >= '0' && (ch) <= '9') || (ch) == '.')
110 static int IpcpLayerUp(struct fsm *);
111 static void IpcpLayerDown(struct fsm *);
112 static void IpcpLayerStart(struct fsm *);
113 static void IpcpLayerFinish(struct fsm *);
114 static void IpcpInitRestartCounter(struct fsm *, int);
115 static void IpcpSendConfigReq(struct fsm *);
116 static void IpcpSentTerminateReq(struct fsm *);
117 static void IpcpSendTerminateAck(struct fsm *, u_char);
118 static void IpcpDecodeConfig(struct fsm *, u_char *, u_char *, int,
119 struct fsm_decode *);
121 static struct fsm_callbacks ipcp_Callbacks = {
126 IpcpInitRestartCounter,
128 IpcpSentTerminateReq,
129 IpcpSendTerminateAck,
131 fsm_NullRecvResetReq,
142 /* Check out the latest ``Assigned numbers'' rfc (rfc1700.txt) */
143 { 1, "IPADDRS" }, /* IP-Addresses */ /* deprecated */
144 { 2, "COMPPROTO" }, /* IP-Compression-Protocol */
145 { 3, "IPADDR" }, /* IP-Address */
146 { 129, "PRIDNS" }, /* 129: Primary DNS Server Address */
147 { 130, "PRINBNS" }, /* 130: Primary NBNS Server Address */
148 { 131, "SECDNS" }, /* 131: Secondary DNS Server Address */
149 { 132, "SECNBNS" } /* 132: Secondary NBNS Server Address */
153 for (f = 0; f < sizeof cftypes / sizeof *cftypes; f++)
154 if (cftypes[f].id == proto)
155 return cftypes[f].txt;
157 return NumStr(proto, NULL, 0);
161 ipcp_AddInOctets(struct ipcp *ipcp, int n)
163 throughput_addin(&ipcp->throughput, n);
167 ipcp_AddOutOctets(struct ipcp *ipcp, int n)
169 throughput_addout(&ipcp->throughput, n);
173 ipcp_LoadDNS(struct ipcp *ipcp)
177 ipcp->ns.dns[0].s_addr = ipcp->ns.dns[1].s_addr = INADDR_NONE;
179 if (ipcp->ns.resolv != NULL) {
180 free(ipcp->ns.resolv);
181 ipcp->ns.resolv = NULL;
183 if (ipcp->ns.resolv_nons != NULL) {
184 free(ipcp->ns.resolv_nons);
185 ipcp->ns.resolv_nons = NULL;
187 ipcp->ns.resolver = 0;
189 if ((fd = open(_PATH_RESCONF, O_RDONLY)) != -1) {
192 if (fstat(fd, &st) == 0) {
195 if ((ipcp->ns.resolv_nons = (char *)malloc(st.st_size + 1)) == NULL)
196 log_Printf(LogERROR, "Failed to malloc %lu for %s: %s\n",
197 (unsigned long)st.st_size, _PATH_RESCONF, strerror(errno));
198 else if ((ipcp->ns.resolv = (char *)malloc(st.st_size + 1)) == NULL) {
199 log_Printf(LogERROR, "Failed(2) to malloc %lu for %s: %s\n",
200 (unsigned long)st.st_size, _PATH_RESCONF, strerror(errno));
201 free(ipcp->ns.resolv_nons);
202 ipcp->ns.resolv_nons = NULL;
203 } else if ((got = read(fd, ipcp->ns.resolv, st.st_size)) != st.st_size) {
205 log_Printf(LogERROR, "Failed to read %s: %s\n",
206 _PATH_RESCONF, strerror(errno));
208 log_Printf(LogERROR, "Failed to read %s, got %lu not %lu\n",
209 _PATH_RESCONF, (unsigned long)got,
210 (unsigned long)st.st_size);
211 free(ipcp->ns.resolv_nons);
212 ipcp->ns.resolv_nons = NULL;
213 free(ipcp->ns.resolv);
214 ipcp->ns.resolv = NULL;
216 char *cp, *cp_nons, *ncp, ch;
219 ipcp->ns.resolv[st.st_size] = '\0';
220 ipcp->ns.resolver = 1;
222 cp_nons = ipcp->ns.resolv_nons;
223 cp = ipcp->ns.resolv;
226 while ((ncp = strstr(cp, "nameserver")) != NULL) {
228 memcpy(cp_nons, cp, ncp - cp);
231 if ((ncp != cp && ncp[-1] != '\n') || !issep(ncp[10])) {
232 memcpy(cp_nons, ncp, 9);
234 cp = ncp + 9; /* Can't match "nameserver" at cp... */
238 for (cp = ncp + 11; issep(*cp); cp++) /* Skip whitespace */
241 for (ncp = cp; isip(*ncp); ncp++) /* Jump over IP */
246 if (n < 2 && inet_aton(cp, ipcp->ns.dns))
250 if ((cp = strchr(ncp, '\n')) == NULL) /* Point at next line */
251 cp = ncp + strlen(ncp);
255 strcpy(cp_nons, cp); /* Copy the end - including the NUL */
256 cp_nons += strlen(cp_nons) - 1;
257 while (cp_nons >= ipcp->ns.resolv_nons && *cp_nons == '\n')
259 if (n == 2 && ipcp->ns.dns[0].s_addr == INADDR_ANY) {
260 ipcp->ns.dns[0].s_addr = ipcp->ns.dns[1].s_addr;
261 ipcp->ns.dns[1].s_addr = INADDR_ANY;
263 bundle_AdjustDNS(ipcp->fsm.bundle);
266 log_Printf(LogERROR, "Failed to stat opened %s: %s\n",
267 _PATH_RESCONF, strerror(errno));
274 ipcp_WriteDNS(struct ipcp *ipcp)
280 if (ipcp->ns.dns[0].s_addr == INADDR_ANY &&
281 ipcp->ns.dns[1].s_addr == INADDR_ANY) {
282 log_Printf(LogIPCP, "%s not modified: All nameservers NAKd\n",
287 if (ipcp->ns.dns[0].s_addr == INADDR_ANY) {
288 ipcp->ns.dns[0].s_addr = ipcp->ns.dns[1].s_addr;
289 ipcp->ns.dns[1].s_addr = INADDR_ANY;
293 if ((fp = ID0fopen(_PATH_RESCONF, "w")) != NULL) {
295 if (ipcp->ns.resolv_nons)
296 fputs(ipcp->ns.resolv_nons, fp);
297 paddr = inet_ntoa(ipcp->ns.dns[0]);
298 log_Printf(LogIPCP, "Primary nameserver set to %s\n", paddr);
299 fprintf(fp, "\nnameserver %s\n", paddr);
300 if (ipcp->ns.dns[1].s_addr != INADDR_ANY &&
301 ipcp->ns.dns[1].s_addr != INADDR_NONE &&
302 ipcp->ns.dns[1].s_addr != ipcp->ns.dns[0].s_addr) {
303 paddr = inet_ntoa(ipcp->ns.dns[1]);
304 log_Printf(LogIPCP, "Secondary nameserver set to %s\n", paddr);
305 fprintf(fp, "nameserver %s\n", paddr);
307 if (fclose(fp) == EOF) {
308 log_Printf(LogERROR, "write(): Failed updating %s: %s\n", _PATH_RESCONF,
319 ipcp_RestoreDNS(struct ipcp *ipcp)
321 if (ipcp->ns.resolver) {
326 if ((fd = ID0open(_PATH_RESCONF, O_WRONLY|O_TRUNC, 0644)) != -1) {
327 len = strlen(ipcp->ns.resolv);
328 if ((got = write(fd, ipcp->ns.resolv, len)) != len) {
330 log_Printf(LogERROR, "Failed rewriting %s: write: %s\n",
331 _PATH_RESCONF, strerror(errno));
333 log_Printf(LogERROR, "Failed rewriting %s: wrote %lu of %lu\n",
334 _PATH_RESCONF, (unsigned long)got, (unsigned long)len);
338 log_Printf(LogERROR, "Failed rewriting %s: open: %s\n", _PATH_RESCONF,
340 } else if (remove(_PATH_RESCONF) == -1)
341 log_Printf(LogERROR, "Failed removing %s: %s\n", _PATH_RESCONF,
347 ipcp_Show(struct cmdargs const *arg)
349 struct ipcp *ipcp = &arg->bundle->ncp.ipcp;
351 prompt_Printf(arg->prompt, "%s [%s]\n", ipcp->fsm.name,
352 State2Nam(ipcp->fsm.state));
353 if (ipcp->fsm.state == ST_OPENED) {
354 prompt_Printf(arg->prompt, " His side: %s, %s\n",
355 inet_ntoa(ipcp->peer_ip), vj2asc(ipcp->peer_compproto));
356 prompt_Printf(arg->prompt, " My side: %s, %s\n",
357 inet_ntoa(ipcp->my_ip), vj2asc(ipcp->my_compproto));
358 prompt_Printf(arg->prompt, " Queued packets: %lu\n",
359 (unsigned long)ipcp_QueueLen(ipcp));
362 prompt_Printf(arg->prompt, "\nDefaults:\n");
363 prompt_Printf(arg->prompt, " FSM retry = %us, max %u Config"
364 " REQ%s, %u Term REQ%s\n", ipcp->cfg.fsm.timeout,
365 ipcp->cfg.fsm.maxreq, ipcp->cfg.fsm.maxreq == 1 ? "" : "s",
366 ipcp->cfg.fsm.maxtrm, ipcp->cfg.fsm.maxtrm == 1 ? "" : "s");
367 prompt_Printf(arg->prompt, " My Address: %s\n",
368 ncprange_ntoa(&ipcp->cfg.my_range));
369 if (ipcp->cfg.HaveTriggerAddress)
370 prompt_Printf(arg->prompt, " Trigger address: %s\n",
371 inet_ntoa(ipcp->cfg.TriggerAddress));
373 prompt_Printf(arg->prompt, " VJ compression: %s (%d slots %s slot "
374 "compression)\n", command_ShowNegval(ipcp->cfg.vj.neg),
375 ipcp->cfg.vj.slots, ipcp->cfg.vj.slotcomp ? "with" : "without");
377 if (iplist_isvalid(&ipcp->cfg.peer_list))
378 prompt_Printf(arg->prompt, " His Address: %s\n",
379 ipcp->cfg.peer_list.src);
381 prompt_Printf(arg->prompt, " His Address: %s\n",
382 ncprange_ntoa(&ipcp->cfg.peer_range));
384 prompt_Printf(arg->prompt, " DNS: %s",
385 ipcp->cfg.ns.dns[0].s_addr == INADDR_NONE ?
386 "none" : inet_ntoa(ipcp->cfg.ns.dns[0]));
387 if (ipcp->cfg.ns.dns[1].s_addr != INADDR_NONE)
388 prompt_Printf(arg->prompt, ", %s",
389 inet_ntoa(ipcp->cfg.ns.dns[1]));
390 prompt_Printf(arg->prompt, ", %s\n",
391 command_ShowNegval(ipcp->cfg.ns.dns_neg));
392 prompt_Printf(arg->prompt, " Resolver DNS: %s",
393 ipcp->ns.dns[0].s_addr == INADDR_NONE ?
394 "none" : inet_ntoa(ipcp->ns.dns[0]));
395 if (ipcp->ns.dns[1].s_addr != INADDR_NONE &&
396 ipcp->ns.dns[1].s_addr != ipcp->ns.dns[0].s_addr)
397 prompt_Printf(arg->prompt, ", %s",
398 inet_ntoa(ipcp->ns.dns[1]));
399 prompt_Printf(arg->prompt, "\n NetBIOS NS: %s, ",
400 inet_ntoa(ipcp->cfg.ns.nbns[0]));
401 prompt_Printf(arg->prompt, "%s\n\n",
402 inet_ntoa(ipcp->cfg.ns.nbns[1]));
404 throughput_disp(&ipcp->throughput, arg->prompt);
410 ipcp_vjset(struct cmdargs const *arg)
412 if (arg->argc != arg->argn+2)
414 if (!strcasecmp(arg->argv[arg->argn], "slots")) {
417 slots = atoi(arg->argv[arg->argn+1]);
418 if (slots < 4 || slots > 16)
420 arg->bundle->ncp.ipcp.cfg.vj.slots = slots;
422 } else if (!strcasecmp(arg->argv[arg->argn], "slotcomp")) {
423 if (!strcasecmp(arg->argv[arg->argn+1], "on"))
424 arg->bundle->ncp.ipcp.cfg.vj.slotcomp = 1;
425 else if (!strcasecmp(arg->argv[arg->argn+1], "off"))
426 arg->bundle->ncp.ipcp.cfg.vj.slotcomp = 0;
435 ipcp_Init(struct ipcp *ipcp, struct bundle *bundle, struct link *l,
436 const struct fsm_parent *parent)
440 char name[MAXHOSTNAMELEN];
441 static const char * const timer_names[] =
442 {"IPCP restart", "IPCP openmode", "IPCP stopped"};
444 fsm_Init(&ipcp->fsm, "IPCP", PROTO_IPCP, 1, IPCP_MAXCODE, LogIPCP,
445 bundle, l, parent, &ipcp_Callbacks, timer_names);
447 ipcp->cfg.vj.slots = DEF_VJ_STATES;
448 ipcp->cfg.vj.slotcomp = 1;
449 memset(&ipcp->cfg.my_range, '\0', sizeof ipcp->cfg.my_range);
451 host.s_addr = htonl(INADDR_LOOPBACK);
452 ipcp->cfg.netmask.s_addr = INADDR_ANY;
453 if (gethostname(name, sizeof name) == 0) {
454 hp = gethostbyname(name);
455 if (hp && hp->h_addrtype == AF_INET && hp->h_length == sizeof host.s_addr)
456 memcpy(&host.s_addr, hp->h_addr, sizeof host.s_addr);
458 ncprange_setip4(&ipcp->cfg.my_range, host, ipcp->cfg.netmask);
459 ncprange_setip4(&ipcp->cfg.peer_range, ipcp->cfg.netmask, ipcp->cfg.netmask);
461 iplist_setsrc(&ipcp->cfg.peer_list, "");
462 ipcp->cfg.HaveTriggerAddress = 0;
464 ipcp->cfg.ns.dns[0].s_addr = INADDR_NONE;
465 ipcp->cfg.ns.dns[1].s_addr = INADDR_NONE;
466 ipcp->cfg.ns.dns_neg = 0;
467 ipcp->cfg.ns.nbns[0].s_addr = INADDR_ANY;
468 ipcp->cfg.ns.nbns[1].s_addr = INADDR_ANY;
470 ipcp->cfg.fsm.timeout = DEF_FSMRETRY;
471 ipcp->cfg.fsm.maxreq = DEF_FSMTRIES;
472 ipcp->cfg.fsm.maxtrm = DEF_FSMTRIES;
473 ipcp->cfg.vj.neg = NEG_ENABLED|NEG_ACCEPTED;
475 memset(&ipcp->vj, '\0', sizeof ipcp->vj);
477 ipcp->ns.resolv = NULL;
478 ipcp->ns.resolv_nons = NULL;
479 ipcp->ns.writable = 1;
482 throughput_init(&ipcp->throughput, SAMPLE_PERIOD);
483 memset(ipcp->Queue, '\0', sizeof ipcp->Queue);
484 ipcp_Setup(ipcp, INADDR_NONE);
488 ipcp_Destroy(struct ipcp *ipcp)
490 throughput_destroy(&ipcp->throughput);
492 if (ipcp->ns.resolv != NULL) {
493 free(ipcp->ns.resolv);
494 ipcp->ns.resolv = NULL;
496 if (ipcp->ns.resolv_nons != NULL) {
497 free(ipcp->ns.resolv_nons);
498 ipcp->ns.resolv_nons = NULL;
503 ipcp_SetLink(struct ipcp *ipcp, struct link *l)
509 ipcp_Setup(struct ipcp *ipcp, u_int32_t mask)
511 struct iface *iface = ipcp->fsm.bundle->iface;
512 struct ncpaddr ipaddr;
516 ipcp->fsm.open_mode = 0;
517 ipcp->ifmask.s_addr = mask == INADDR_NONE ? ipcp->cfg.netmask.s_addr : mask;
519 if (iplist_isvalid(&ipcp->cfg.peer_list)) {
520 /* Try to give the peer a previously configured IP address */
521 for (n = 0; n < iface->addrs; n++) {
522 if (!ncpaddr_getip4(&iface->addr[n].peer, &peer))
524 if ((pos = iplist_ip2pos(&ipcp->cfg.peer_list, peer)) != -1) {
525 ncpaddr_setip4(&ipaddr, iplist_setcurpos(&ipcp->cfg.peer_list, pos));
529 if (n == iface->addrs)
530 /* Ok, so none of 'em fit.... pick a random one */
531 ncpaddr_setip4(&ipaddr, iplist_setrandpos(&ipcp->cfg.peer_list));
533 ncprange_sethost(&ipcp->cfg.peer_range, &ipaddr);
538 ncprange_getip4addr(&ipcp->cfg.peer_range, &ipcp->peer_ip);
539 ipcp->peer_compproto = 0;
541 if (ipcp->cfg.HaveTriggerAddress) {
543 * Some implementations of PPP require that we send a
544 * *special* value as our address, even though the rfc specifies
545 * full negotiation (e.g. "0.0.0.0" or Not "0.0.0.0").
547 ipcp->my_ip = ipcp->cfg.TriggerAddress;
548 log_Printf(LogIPCP, "Using trigger address %s\n",
549 inet_ntoa(ipcp->cfg.TriggerAddress));
552 * Otherwise, if we've used an IP number before and it's still within
553 * the network specified on the ``set ifaddr'' line, we really
554 * want to keep that IP number so that we can keep any existing
555 * connections that are bound to that IP.
557 for (n = 0; n < iface->addrs; n++) {
558 ncprange_getaddr(&iface->addr[n].ifa, &ipaddr);
559 if (ncprange_contains(&ipcp->cfg.my_range, &ipaddr)) {
560 ncpaddr_getip4(&ipaddr, &ipcp->my_ip);
564 if (n == iface->addrs)
565 ncprange_getip4addr(&ipcp->cfg.my_range, &ipcp->my_ip);
568 if (IsEnabled(ipcp->cfg.vj.neg)
570 || (ipcp->fsm.bundle->radius.valid && ipcp->fsm.bundle->radius.vj)
573 ipcp->my_compproto = (PROTO_VJCOMP << 16) +
574 ((ipcp->cfg.vj.slots - 1) << 8) +
575 ipcp->cfg.vj.slotcomp;
577 ipcp->my_compproto = 0;
578 sl_compress_init(&ipcp->vj.cslc, ipcp->cfg.vj.slots - 1);
580 ipcp->peer_reject = 0;
583 /* Copy startup values into ipcp->ns.dns */
584 if (ipcp->cfg.ns.dns[0].s_addr != INADDR_NONE)
585 memcpy(ipcp->ns.dns, ipcp->cfg.ns.dns, sizeof ipcp->ns.dns);
589 numaddresses(struct in_addr mask)
591 u_int32_t bit, haddr;
594 haddr = ntohl(mask.s_addr);
607 ipcp_proxyarp(struct ipcp *ipcp,
608 int (*proxyfun)(struct bundle *, struct in_addr, int),
609 const struct iface_addr *addr)
611 struct bundle *bundle = ipcp->fsm.bundle;
612 struct in_addr peer, mask, ip;
615 if (!ncpaddr_getip4(&addr->peer, &peer)) {
616 log_Printf(LogERROR, "Oops, ipcp_proxyarp() called with unexpected addr\n");
620 if ((s = ID0socket(PF_INET, SOCK_DGRAM, 0)) == -1) {
621 log_Printf(LogERROR, "ipcp_proxyarp: socket: %s\n",
628 if (Enabled(bundle, OPT_PROXYALL)) {
629 ncprange_getip4mask(&addr->ifa, &mask);
630 if ((n = numaddresses(mask)) > 256) {
631 log_Printf(LogWARN, "%s: Too many addresses for proxyall\n",
632 ncprange_ntoa(&addr->ifa));
635 ip.s_addr = peer.s_addr & mask.s_addr;
637 ip.s_addr = htonl(ntohl(ip.s_addr) + 1);
641 if (!((ip.s_addr ^ peer.s_addr) & mask.s_addr)) {
642 if (!(ret = (*proxyfun)(bundle, ip, s)))
646 ip.s_addr = htonl(ntohl(ip.s_addr) + 1);
649 } else if (Enabled(bundle, OPT_PROXY))
650 ret = (*proxyfun)(bundle, peer, s);
658 ipcp_SetIPaddress(struct ipcp *ipcp, struct in_addr myaddr,
659 struct in_addr hisaddr)
661 struct bundle *bundle = ipcp->fsm.bundle;
662 struct ncpaddr myncpaddr, hisncpaddr;
663 struct ncprange myrange;
665 struct sockaddr_storage ssdst, ssgw, ssmask;
666 struct sockaddr *sadst, *sagw, *samask;
668 sadst = (struct sockaddr *)&ssdst;
669 sagw = (struct sockaddr *)&ssgw;
670 samask = (struct sockaddr *)&ssmask;
672 ncpaddr_setip4(&hisncpaddr, hisaddr);
673 ncpaddr_setip4(&myncpaddr, myaddr);
674 ncprange_sethost(&myrange, &myncpaddr);
676 mask = addr2mask(myaddr);
678 if (ipcp->ifmask.s_addr != INADDR_ANY &&
679 (ipcp->ifmask.s_addr & mask.s_addr) == mask.s_addr)
680 ncprange_setip4mask(&myrange, ipcp->ifmask);
682 if (!iface_Add(bundle->iface, &bundle->ncp, &myrange, &hisncpaddr,
683 IFACE_ADD_FIRST|IFACE_FORCE_ADD|IFACE_SYSTEM))
686 if (!Enabled(bundle, OPT_IFACEALIAS))
687 iface_Clear(bundle->iface, &bundle->ncp, AF_INET,
688 IFACE_CLEAR_ALIASES|IFACE_SYSTEM);
690 if (bundle->ncp.cfg.sendpipe > 0 || bundle->ncp.cfg.recvpipe > 0) {
691 ncprange_getsa(&myrange, &ssgw, &ssmask);
692 ncpaddr_getsa(&hisncpaddr, &ssdst);
693 rt_Update(bundle, sadst, sagw, samask);
696 if (Enabled(bundle, OPT_SROUTES))
697 route_Change(bundle, bundle->ncp.route, &myncpaddr, &hisncpaddr);
700 if (bundle->radius.valid)
701 route_Change(bundle, bundle->radius.routes, &myncpaddr, &hisncpaddr);
707 static struct in_addr
708 ChooseHisAddr(struct bundle *bundle, struct in_addr gw)
713 for (f = 0; f < bundle->ncp.ipcp.cfg.peer_list.nItems; f++) {
714 try = iplist_next(&bundle->ncp.ipcp.cfg.peer_list);
715 log_Printf(LogDEBUG, "ChooseHisAddr: Check item %ld (%s)\n",
717 if (ipcp_SetIPaddress(&bundle->ncp.ipcp, gw, try)) {
718 log_Printf(LogIPCP, "Selected IP address %s\n", inet_ntoa(try));
723 if (f == bundle->ncp.ipcp.cfg.peer_list.nItems) {
724 log_Printf(LogDEBUG, "ChooseHisAddr: All addresses in use !\n");
725 try.s_addr = INADDR_ANY;
732 IpcpInitRestartCounter(struct fsm *fp, int what)
734 /* Set fsm timer load */
735 struct ipcp *ipcp = fsm2ipcp(fp);
737 fp->FsmTimer.load = ipcp->cfg.fsm.timeout * SECTICKS;
740 fp->restart = ipcp->cfg.fsm.maxreq;
743 fp->restart = ipcp->cfg.fsm.maxtrm;
752 IpcpSendConfigReq(struct fsm *fp)
754 /* Send config REQ please */
755 struct physical *p = link2physical(fp->link);
756 struct ipcp *ipcp = fsm2ipcp(fp);
760 o = (struct fsm_opt *)buff;
762 if ((p && !physical_IsSync(p)) || !REJECTED(ipcp, TY_IPADDR)) {
763 memcpy(o->data, &ipcp->my_ip.s_addr, 4);
764 INC_FSM_OPT(TY_IPADDR, 6, o);
767 if (ipcp->my_compproto && !REJECTED(ipcp, TY_COMPPROTO)) {
768 if (ipcp->heis1172) {
769 u_int16_t proto = PROTO_VJCOMP;
771 ua_htons(&proto, o->data);
772 INC_FSM_OPT(TY_COMPPROTO, 4, o);
776 req.proto = htons(ipcp->my_compproto >> 16);
777 req.slots = (ipcp->my_compproto >> 8) & 255;
778 req.compcid = ipcp->my_compproto & 1;
779 memcpy(o->data, &req, 4);
780 INC_FSM_OPT(TY_COMPPROTO, 6, o);
784 if (IsEnabled(ipcp->cfg.ns.dns_neg)) {
785 if (!REJECTED(ipcp, TY_PRIMARY_DNS - TY_ADJUST_NS)) {
786 memcpy(o->data, &ipcp->ns.dns[0].s_addr, 4);
787 INC_FSM_OPT(TY_PRIMARY_DNS, 6, o);
790 if (!REJECTED(ipcp, TY_SECONDARY_DNS - TY_ADJUST_NS)) {
791 memcpy(o->data, &ipcp->ns.dns[1].s_addr, 4);
792 INC_FSM_OPT(TY_SECONDARY_DNS, 6, o);
796 fsm_Output(fp, CODE_CONFIGREQ, fp->reqid, buff, (u_char *)o - buff,
801 IpcpSentTerminateReq(struct fsm *fp)
803 /* Term REQ just sent by FSM */
807 IpcpSendTerminateAck(struct fsm *fp, u_char id)
809 /* Send Term ACK please */
810 fsm_Output(fp, CODE_TERMACK, id, NULL, 0, MB_IPCPOUT);
814 IpcpLayerStart(struct fsm *fp)
816 /* We're about to start up ! */
817 struct ipcp *ipcp = fsm2ipcp(fp);
819 log_Printf(LogIPCP, "%s: LayerStart.\n", fp->link->name);
820 throughput_start(&ipcp->throughput, "IPCP throughput",
821 Enabled(fp->bundle, OPT_THROUGHPUT));
822 fp->more.reqs = fp->more.naks = fp->more.rejs = ipcp->cfg.fsm.maxreq * 3;
827 IpcpLayerFinish(struct fsm *fp)
830 struct ipcp *ipcp = fsm2ipcp(fp);
832 log_Printf(LogIPCP, "%s: LayerFinish.\n", fp->link->name);
833 throughput_stop(&ipcp->throughput);
834 throughput_log(&ipcp->throughput, LogIPCP, NULL);
838 * Called from iface_Add() via ncp_IfaceAddrAdded()
841 ipcp_IfaceAddrAdded(struct ipcp *ipcp, const struct iface_addr *addr)
843 struct bundle *bundle = ipcp->fsm.bundle;
845 if (Enabled(bundle, OPT_PROXY) || Enabled(bundle, OPT_PROXYALL))
846 ipcp_proxyarp(ipcp, arp_SetProxy, addr);
850 * Called from iface_Clear() and iface_Delete() via ncp_IfaceAddrDeleted()
853 ipcp_IfaceAddrDeleted(struct ipcp *ipcp, const struct iface_addr *addr)
855 struct bundle *bundle = ipcp->fsm.bundle;
857 if (Enabled(bundle, OPT_PROXY) || Enabled(bundle, OPT_PROXYALL))
858 ipcp_proxyarp(ipcp, arp_ClearProxy, addr);
862 IpcpLayerDown(struct fsm *fp)
864 /* About to come down */
865 struct ipcp *ipcp = fsm2ipcp(fp);
866 static int recursing;
870 snprintf(addr, sizeof addr, "%s", inet_ntoa(ipcp->my_ip));
871 log_Printf(LogIPCP, "%s: LayerDown: %s\n", fp->link->name, addr);
874 radius_Account(&fp->bundle->radius, &fp->bundle->radacct,
875 fp->bundle->links, RAD_STOP, &ipcp->peer_ip, &ipcp->ifmask,
878 if (fp->bundle->radius.cfg.file && fp->bundle->radius.filterid)
879 system_Select(fp->bundle, fp->bundle->radius.filterid, LINKDOWNFILE,
884 * XXX this stuff should really live in the FSM. Our config should
885 * associate executable sections in files with events.
887 if (system_Select(fp->bundle, addr, LINKDOWNFILE, NULL, NULL) < 0) {
888 if (bundle_GetLabel(fp->bundle)) {
889 if (system_Select(fp->bundle, bundle_GetLabel(fp->bundle),
890 LINKDOWNFILE, NULL, NULL) < 0)
891 system_Select(fp->bundle, "MYADDR", LINKDOWNFILE, NULL, NULL);
893 system_Select(fp->bundle, "MYADDR", LINKDOWNFILE, NULL, NULL);
896 ipcp_Setup(ipcp, INADDR_NONE);
902 ipcp_InterfaceUp(struct ipcp *ipcp)
904 if (!ipcp_SetIPaddress(ipcp, ipcp->my_ip, ipcp->peer_ip)) {
905 log_Printf(LogERROR, "ipcp_InterfaceUp: unable to set ip address\n");
909 if (!iface_SetFlags(ipcp->fsm.bundle->iface->name, IFF_UP)) {
910 log_Printf(LogERROR, "ipcp_InterfaceUp: Can't set the IFF_UP flag on %s\n",
911 ipcp->fsm.bundle->iface->name);
916 if (ipcp->fsm.bundle->NatEnabled)
917 PacketAliasSetAddress(ipcp->my_ip);
924 IpcpLayerUp(struct fsm *fp)
927 struct ipcp *ipcp = fsm2ipcp(fp);
930 log_Printf(LogIPCP, "%s: LayerUp.\n", fp->link->name);
931 snprintf(tbuff, sizeof tbuff, "%s", inet_ntoa(ipcp->my_ip));
932 log_Printf(LogIPCP, "myaddr %s hisaddr = %s\n",
933 tbuff, inet_ntoa(ipcp->peer_ip));
935 if (ipcp->peer_compproto >> 16 == PROTO_VJCOMP)
936 sl_compress_init(&ipcp->vj.cslc, (ipcp->peer_compproto >> 8) & 255);
938 if (!ipcp_InterfaceUp(ipcp))
942 radius_Account(&fp->bundle->radius, &fp->bundle->radacct, fp->bundle->links,
943 RAD_START, &ipcp->peer_ip, &ipcp->ifmask, &ipcp->throughput);
945 if (fp->bundle->radius.cfg.file && fp->bundle->radius.filterid)
946 system_Select(fp->bundle, fp->bundle->radius.filterid, LINKUPFILE,
951 * XXX this stuff should really live in the FSM. Our config should
952 * associate executable sections in files with events.
954 if (system_Select(fp->bundle, tbuff, LINKUPFILE, NULL, NULL) < 0) {
955 if (bundle_GetLabel(fp->bundle)) {
956 if (system_Select(fp->bundle, bundle_GetLabel(fp->bundle),
957 LINKUPFILE, NULL, NULL) < 0)
958 system_Select(fp->bundle, "MYADDR", LINKUPFILE, NULL, NULL);
960 system_Select(fp->bundle, "MYADDR", LINKUPFILE, NULL, NULL);
963 fp->more.reqs = fp->more.naks = fp->more.rejs = ipcp->cfg.fsm.maxreq * 3;
964 log_DisplayPrompts();
970 ipcp_ValidateReq(struct ipcp *ipcp, struct in_addr ip, struct fsm_decode *dec)
972 struct bundle *bundle = ipcp->fsm.bundle;
973 struct iface *iface = bundle->iface;
974 struct in_addr myaddr, peer;
977 if (iplist_isvalid(&ipcp->cfg.peer_list)) {
978 ncprange_getip4addr(&ipcp->cfg.my_range, &myaddr);
979 if (ip.s_addr == INADDR_ANY ||
980 iplist_ip2pos(&ipcp->cfg.peer_list, ip) < 0 ||
981 !ipcp_SetIPaddress(ipcp, myaddr, ip)) {
982 log_Printf(LogIPCP, "%s: Address invalid or already in use\n",
985 * If we've already had a valid address configured for the peer,
986 * try NAKing with that so that we don't have to upset things
989 for (n = 0; n < iface->addrs; n++) {
990 if (!ncpaddr_getip4(&iface->addr[n].peer, &peer))
992 if (iplist_ip2pos(&ipcp->cfg.peer_list, peer) >= 0) {
993 ipcp->peer_ip = peer;
998 if (n == iface->addrs) {
999 /* Just pick an IP number from our list */
1000 ipcp->peer_ip = ChooseHisAddr(bundle, myaddr);
1003 if (ipcp->peer_ip.s_addr == INADDR_ANY) {
1004 *dec->rejend++ = TY_IPADDR;
1006 memcpy(dec->rejend, &ip.s_addr, 4);
1009 *dec->nakend++ = TY_IPADDR;
1011 memcpy(dec->nakend, &ipcp->peer_ip.s_addr, 4);
1016 } else if (ip.s_addr == INADDR_ANY ||
1017 !ncprange_containsip4(&ipcp->cfg.peer_range, ip)) {
1019 * If the destination address is not acceptable, NAK with what we
1022 *dec->nakend++ = TY_IPADDR;
1024 for (n = 0; n < iface->addrs; n++)
1025 if (ncprange_contains(&ipcp->cfg.peer_range, &iface->addr[n].peer)) {
1026 /* We prefer the already-configured address */
1027 ncpaddr_getip4addr(&iface->addr[n].peer, (u_int32_t *)dec->nakend);
1031 if (n == iface->addrs)
1032 memcpy(dec->nakend, &ipcp->peer_ip.s_addr, 4);
1039 *dec->ackend++ = TY_IPADDR;
1041 memcpy(dec->ackend, &ip.s_addr, 4);
1046 IpcpDecodeConfig(struct fsm *fp, u_char *cp, u_char *end, int mode_type,
1047 struct fsm_decode *dec)
1049 /* Deal with incoming PROTO_IPCP */
1050 struct ncpaddr ncpaddr;
1051 struct ipcp *ipcp = fsm2ipcp(fp);
1053 u_int32_t compproto;
1054 struct compreq *pcomp;
1055 struct in_addr ipaddr, dstipaddr, have_ip;
1056 char tbuff[100], tbuff2[100];
1057 struct fsm_opt *opt, nak;
1061 while (end - cp >= sizeof(opt->hdr)) {
1062 if ((opt = fsm_readopt(&cp)) == NULL)
1065 snprintf(tbuff, sizeof tbuff, " %s[%d]", protoname(opt->hdr.id),
1068 switch (opt->hdr.id) {
1069 case TY_IPADDR: /* RFC1332 */
1070 memcpy(&ipaddr.s_addr, opt->data, 4);
1071 log_Printf(LogIPCP, "%s %s\n", tbuff, inet_ntoa(ipaddr));
1073 switch (mode_type) {
1076 ipcp_ValidateReq(ipcp, ipaddr, dec);
1080 if (ncprange_containsip4(&ipcp->cfg.my_range, ipaddr)) {
1081 /* Use address suggested by peer */
1082 snprintf(tbuff2, sizeof tbuff2, "%s changing address: %s ", tbuff,
1083 inet_ntoa(ipcp->my_ip));
1084 log_Printf(LogIPCP, "%s --> %s\n", tbuff2, inet_ntoa(ipaddr));
1085 ipcp->my_ip = ipaddr;
1086 ncpaddr_setip4(&ncpaddr, ipcp->my_ip);
1087 bundle_AdjustFilters(fp->bundle, &ncpaddr, NULL);
1089 log_Printf(log_IsKept(LogIPCP) ? LogIPCP : LogPHASE,
1090 "%s: Unacceptable address!\n", inet_ntoa(ipaddr));
1091 fsm_Close(&ipcp->fsm);
1096 ipcp->peer_reject |= (1 << opt->hdr.id);
1102 pcomp = (struct compreq *)opt->data;
1103 compproto = (ntohs(pcomp->proto) << 16) + (pcomp->slots << 8) +
1105 log_Printf(LogIPCP, "%s %s\n", tbuff, vj2asc(compproto));
1107 switch (mode_type) {
1109 if (!IsAccepted(ipcp->cfg.vj.neg))
1112 switch (opt->hdr.len) {
1113 case 4: /* RFC1172 */
1114 if (ntohs(pcomp->proto) == PROTO_VJCOMP) {
1115 log_Printf(LogWARN, "Peer is speaking RFC1172 compression "
1118 ipcp->peer_compproto = compproto;
1121 pcomp->proto = htons(PROTO_VJCOMP);
1122 nak.hdr.id = TY_COMPPROTO;
1124 memcpy(nak.data, &pcomp, 2);
1128 case 6: /* RFC1332 */
1129 if (ntohs(pcomp->proto) == PROTO_VJCOMP) {
1130 if (pcomp->slots <= MAX_VJ_STATES
1131 && pcomp->slots >= MIN_VJ_STATES) {
1132 /* Ok, we can do that */
1133 ipcp->peer_compproto = compproto;
1137 /* Get as close as we can to what he wants */
1139 pcomp->slots = pcomp->slots < MIN_VJ_STATES ?
1140 MIN_VJ_STATES : MAX_VJ_STATES;
1141 nak.hdr.id = TY_COMPPROTO;
1143 memcpy(nak.data, &pcomp, 2);
1147 /* What we really want */
1148 pcomp->proto = htons(PROTO_VJCOMP);
1149 pcomp->slots = DEF_VJ_STATES;
1151 nak.hdr.id = TY_COMPPROTO;
1153 memcpy(nak.data, &pcomp, sizeof pcomp);
1165 if (ntohs(pcomp->proto) == PROTO_VJCOMP) {
1166 if (pcomp->slots > MAX_VJ_STATES)
1167 pcomp->slots = MAX_VJ_STATES;
1168 else if (pcomp->slots < MIN_VJ_STATES)
1169 pcomp->slots = MIN_VJ_STATES;
1170 compproto = (ntohs(pcomp->proto) << 16) + (pcomp->slots << 8) +
1174 log_Printf(LogIPCP, "%s changing compproto: %08x --> %08x\n",
1175 tbuff, ipcp->my_compproto, compproto);
1176 ipcp->my_compproto = compproto;
1180 ipcp->peer_reject |= (1 << opt->hdr.id);
1185 case TY_IPADDRS: /* RFC1172 */
1186 memcpy(&ipaddr.s_addr, opt->data, 4);
1187 memcpy(&dstipaddr.s_addr, opt->data + 4, 4);
1188 snprintf(tbuff2, sizeof tbuff2, "%s %s,", tbuff, inet_ntoa(ipaddr));
1189 log_Printf(LogIPCP, "%s %s\n", tbuff2, inet_ntoa(dstipaddr));
1191 switch (mode_type) {
1202 case TY_PRIMARY_DNS: /* DNS negotiation (rfc1877) */
1203 case TY_SECONDARY_DNS:
1204 memcpy(&ipaddr.s_addr, opt->data, 4);
1205 log_Printf(LogIPCP, "%s %s\n", tbuff, inet_ntoa(ipaddr));
1207 switch (mode_type) {
1209 if (!IsAccepted(ipcp->cfg.ns.dns_neg)) {
1210 ipcp->my_reject |= (1 << (opt->hdr.id - TY_ADJUST_NS));
1214 have_ip = ipcp->ns.dns[opt->hdr.id == TY_PRIMARY_DNS ? 0 : 1];
1216 if (opt->hdr.id == TY_PRIMARY_DNS && ipaddr.s_addr != have_ip.s_addr &&
1217 ipaddr.s_addr == ipcp->ns.dns[1].s_addr) {
1218 /* Swap 'em 'round */
1219 ipcp->ns.dns[0] = ipcp->ns.dns[1];
1220 ipcp->ns.dns[1] = have_ip;
1221 have_ip = ipcp->ns.dns[0];
1224 if (ipaddr.s_addr != have_ip.s_addr) {
1226 * The client has got the DNS stuff wrong (first request) so
1227 * we'll tell 'em how it is
1229 nak.hdr.id = opt->hdr.id;
1231 memcpy(nak.data, &have_ip.s_addr, 4);
1235 * Otherwise they have it right (this time) so we send a ack packet
1236 * back confirming it... end of story
1243 if (IsEnabled(ipcp->cfg.ns.dns_neg)) {
1245 memcpy(&ipcp->ns.dns[opt->hdr.id == TY_PRIMARY_DNS ? 0 : 1].s_addr,
1250 case MODE_REJ: /* Can't do much, stop asking */
1251 ipcp->peer_reject |= (1 << (opt->hdr.id - TY_ADJUST_NS));
1256 case TY_PRIMARY_NBNS: /* M$ NetBIOS nameserver hack (rfc1877) */
1257 case TY_SECONDARY_NBNS:
1258 memcpy(&ipaddr.s_addr, opt->data, 4);
1259 log_Printf(LogIPCP, "%s %s\n", tbuff, inet_ntoa(ipaddr));
1261 switch (mode_type) {
1264 ipcp->cfg.ns.nbns[opt->hdr.id == TY_PRIMARY_NBNS ? 0 : 1].s_addr;
1266 if (have_ip.s_addr == INADDR_ANY) {
1267 log_Printf(LogIPCP, "NBNS REQ - rejected - nbns not set\n");
1268 ipcp->my_reject |= (1 << (opt->hdr.id - TY_ADJUST_NS));
1273 if (ipaddr.s_addr != have_ip.s_addr) {
1274 nak.hdr.id = opt->hdr.id;
1276 memcpy(nak.data, &have_ip.s_addr, 4);
1283 log_Printf(LogIPCP, "MS NBNS req %d - NAK??\n", opt->hdr.id);
1287 log_Printf(LogIPCP, "MS NBNS req %d - REJ??\n", opt->hdr.id);
1293 if (mode_type != MODE_NOP) {
1294 ipcp->my_reject |= (1 << opt->hdr.id);
1302 if (ipcp->ns.writable) {
1303 log_Printf(LogDEBUG, "Updating resolver\n");
1304 if (!ipcp_WriteDNS(ipcp)) {
1305 ipcp->peer_reject |= (1 << (TY_PRIMARY_DNS - TY_ADJUST_NS));
1306 ipcp->peer_reject |= (1 << (TY_SECONDARY_DNS - TY_ADJUST_NS));
1308 bundle_AdjustDNS(fp->bundle);
1310 log_Printf(LogDEBUG, "Not updating resolver (readonly)\n");
1311 bundle_AdjustDNS(fp->bundle);
1315 if (mode_type != MODE_NOP) {
1316 if (mode_type == MODE_REQ && !ipcp->peer_req) {
1317 if (dec->rejend == dec->rej && dec->nakend == dec->nak) {
1319 * Pretend the peer has requested an IP.
1320 * We do this to ensure that we only send one NAK if the only
1321 * reason for the NAK is because the peer isn't sending a
1322 * TY_IPADDR REQ. This stops us from repeatedly trying to tell
1323 * the peer that we have to have an IP address on their end.
1327 ipaddr.s_addr = INADDR_ANY;
1328 ipcp_ValidateReq(ipcp, ipaddr, dec);
1330 fsm_opt_normalise(dec);
1334 extern struct mbuf *
1335 ipcp_Input(struct bundle *bundle, struct link *l, struct mbuf *bp)
1337 /* Got PROTO_IPCP from link */
1338 m_settype(bp, MB_IPCPIN);
1339 if (bundle_Phase(bundle) == PHASE_NETWORK)
1340 fsm_Input(&bundle->ncp.ipcp.fsm, bp);
1342 if (bundle_Phase(bundle) < PHASE_NETWORK)
1343 log_Printf(LogIPCP, "%s: Error: Unexpected IPCP in phase %s (ignored)\n",
1344 l->name, bundle_PhaseName(bundle));
1351 ipcp_UseHisIPaddr(struct bundle *bundle, struct in_addr hisaddr)
1353 struct ipcp *ipcp = &bundle->ncp.ipcp;
1354 struct in_addr myaddr;
1356 memset(&ipcp->cfg.peer_range, '\0', sizeof ipcp->cfg.peer_range);
1357 iplist_reset(&ipcp->cfg.peer_list);
1358 ipcp->peer_ip = hisaddr;
1359 ncprange_setip4host(&ipcp->cfg.peer_range, hisaddr);
1360 ncprange_getip4addr(&ipcp->cfg.my_range, &myaddr);
1362 return ipcp_SetIPaddress(ipcp, myaddr, hisaddr);
1366 ipcp_UseHisaddr(struct bundle *bundle, const char *hisaddr, int setaddr)
1368 struct in_addr myaddr;
1369 struct ncp *ncp = &bundle->ncp;
1370 struct ipcp *ipcp = &ncp->ipcp;
1371 struct ncpaddr ncpaddr;
1373 /* Use `hisaddr' for the peers address (set iface if `setaddr') */
1374 memset(&ipcp->cfg.peer_range, '\0', sizeof ipcp->cfg.peer_range);
1375 iplist_reset(&ipcp->cfg.peer_list);
1376 if (strpbrk(hisaddr, ",-")) {
1377 iplist_setsrc(&ipcp->cfg.peer_list, hisaddr);
1378 if (iplist_isvalid(&ipcp->cfg.peer_list)) {
1379 iplist_setrandpos(&ipcp->cfg.peer_list);
1380 ipcp->peer_ip = ChooseHisAddr(bundle, ipcp->my_ip);
1381 if (ipcp->peer_ip.s_addr == INADDR_ANY) {
1382 log_Printf(LogWARN, "%s: None available !\n", ipcp->cfg.peer_list.src);
1385 ncprange_setip4host(&ipcp->cfg.peer_range, ipcp->peer_ip);
1387 log_Printf(LogWARN, "%s: Invalid range !\n", hisaddr);
1390 } else if (ncprange_aton(&ipcp->cfg.peer_range, ncp, hisaddr) != 0) {
1391 if (ncprange_family(&ipcp->cfg.my_range) != AF_INET) {
1392 log_Printf(LogWARN, "%s: Not an AF_INET address !\n", hisaddr);
1395 ncprange_getip4addr(&ipcp->cfg.my_range, &myaddr);
1396 ncprange_getip4addr(&ipcp->cfg.peer_range, &ipcp->peer_ip);
1398 if (setaddr && !ipcp_SetIPaddress(ipcp, myaddr, ipcp->peer_ip))
1403 ncpaddr_setip4(&ncpaddr, ipcp->peer_ip);
1404 bundle_AdjustFilters(bundle, NULL, &ncpaddr);
1410 addr2mask(struct in_addr addr)
1412 u_int32_t haddr = ntohl(addr.s_addr);
1414 haddr = IN_CLASSA(haddr) ? IN_CLASSA_NET :
1415 IN_CLASSB(haddr) ? IN_CLASSB_NET :
1417 addr.s_addr = htonl(haddr);
1423 ipcp_QueueLen(struct ipcp *ipcp)
1429 for (q = ipcp->Queue; q < ipcp->Queue + IPCP_QUEUES(ipcp); q++)
1436 ipcp_PushPacket(struct ipcp *ipcp, struct link *l)
1438 struct bundle *bundle = ipcp->fsm.bundle;
1439 struct mqueue *queue;
1443 unsigned alivesecs = 0;
1445 if (ipcp->fsm.state != ST_OPENED)
1449 * If ccp is not open but is required, do nothing.
1451 if (l->ccp.fsm.state != ST_OPENED && ccp_Required(&l->ccp)) {
1452 log_Printf(LogPHASE, "%s: Not transmitting... waiting for CCP\n", l->name);
1456 queue = ipcp->Queue + IPCP_QUEUES(ipcp) - 1;
1459 bp = m_dequeue(queue);
1460 bp = mbuf_Read(bp, &secs, sizeof secs);
1462 m_len = m_length(bp);
1463 if (!FilterCheck(MBUF_CTOP(bp), AF_INET, &bundle->filter.alive,
1467 bundle_StartIdleTimer(bundle, secs);
1469 link_PushPacket(l, bp, bundle, 0, PROTO_IP);
1470 ipcp_AddOutOctets(ipcp, m_len);
1473 } while (queue-- != ipcp->Queue);