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 $
29 * $DragonFly: src/usr.sbin/ppp/ipcp.c,v 1.2 2003/06/17 04:30:00 dillon Exp $
32 #include <sys/param.h>
33 #include <netinet/in_systm.h>
34 #include <netinet/in.h>
35 #include <netinet/ip.h>
36 #include <arpa/inet.h>
37 #include <sys/socket.h>
39 #include <net/route.h>
71 #include "throughput.h"
72 #include "slcompress.h"
80 #include "descriptor.h"
101 #define REJECTED(p, x) ((p)->peer_reject & (1<<(x)))
102 #define issep(ch) ((ch) == ' ' || (ch) == '\t')
103 #define isip(ch) (((ch) >= '0' && (ch) <= '9') || (ch) == '.')
111 static int IpcpLayerUp(struct fsm *);
112 static void IpcpLayerDown(struct fsm *);
113 static void IpcpLayerStart(struct fsm *);
114 static void IpcpLayerFinish(struct fsm *);
115 static void IpcpInitRestartCounter(struct fsm *, int);
116 static void IpcpSendConfigReq(struct fsm *);
117 static void IpcpSentTerminateReq(struct fsm *);
118 static void IpcpSendTerminateAck(struct fsm *, u_char);
119 static void IpcpDecodeConfig(struct fsm *, u_char *, u_char *, int,
120 struct fsm_decode *);
122 static struct fsm_callbacks ipcp_Callbacks = {
127 IpcpInitRestartCounter,
129 IpcpSentTerminateReq,
130 IpcpSendTerminateAck,
132 fsm_NullRecvResetReq,
143 /* Check out the latest ``Assigned numbers'' rfc (rfc1700.txt) */
144 { 1, "IPADDRS" }, /* IP-Addresses */ /* deprecated */
145 { 2, "COMPPROTO" }, /* IP-Compression-Protocol */
146 { 3, "IPADDR" }, /* IP-Address */
147 { 129, "PRIDNS" }, /* 129: Primary DNS Server Address */
148 { 130, "PRINBNS" }, /* 130: Primary NBNS Server Address */
149 { 131, "SECDNS" }, /* 131: Secondary DNS Server Address */
150 { 132, "SECNBNS" } /* 132: Secondary NBNS Server Address */
154 for (f = 0; f < sizeof cftypes / sizeof *cftypes; f++)
155 if (cftypes[f].id == proto)
156 return cftypes[f].txt;
158 return NumStr(proto, NULL, 0);
162 ipcp_AddInOctets(struct ipcp *ipcp, int n)
164 throughput_addin(&ipcp->throughput, n);
168 ipcp_AddOutOctets(struct ipcp *ipcp, int n)
170 throughput_addout(&ipcp->throughput, n);
174 ipcp_LoadDNS(struct ipcp *ipcp)
178 ipcp->ns.dns[0].s_addr = ipcp->ns.dns[1].s_addr = INADDR_NONE;
180 if (ipcp->ns.resolv != NULL) {
181 free(ipcp->ns.resolv);
182 ipcp->ns.resolv = NULL;
184 if (ipcp->ns.resolv_nons != NULL) {
185 free(ipcp->ns.resolv_nons);
186 ipcp->ns.resolv_nons = NULL;
188 ipcp->ns.resolver = 0;
190 if ((fd = open(_PATH_RESCONF, O_RDONLY)) != -1) {
193 if (fstat(fd, &st) == 0) {
196 if ((ipcp->ns.resolv_nons = (char *)malloc(st.st_size + 1)) == NULL)
197 log_Printf(LogERROR, "Failed to malloc %lu for %s: %s\n",
198 (unsigned long)st.st_size, _PATH_RESCONF, strerror(errno));
199 else if ((ipcp->ns.resolv = (char *)malloc(st.st_size + 1)) == NULL) {
200 log_Printf(LogERROR, "Failed(2) to malloc %lu for %s: %s\n",
201 (unsigned long)st.st_size, _PATH_RESCONF, strerror(errno));
202 free(ipcp->ns.resolv_nons);
203 ipcp->ns.resolv_nons = NULL;
204 } else if ((got = read(fd, ipcp->ns.resolv, st.st_size)) != st.st_size) {
206 log_Printf(LogERROR, "Failed to read %s: %s\n",
207 _PATH_RESCONF, strerror(errno));
209 log_Printf(LogERROR, "Failed to read %s, got %lu not %lu\n",
210 _PATH_RESCONF, (unsigned long)got,
211 (unsigned long)st.st_size);
212 free(ipcp->ns.resolv_nons);
213 ipcp->ns.resolv_nons = NULL;
214 free(ipcp->ns.resolv);
215 ipcp->ns.resolv = NULL;
217 char *cp, *cp_nons, *ncp, ch;
220 ipcp->ns.resolv[st.st_size] = '\0';
221 ipcp->ns.resolver = 1;
223 cp_nons = ipcp->ns.resolv_nons;
224 cp = ipcp->ns.resolv;
227 while ((ncp = strstr(cp, "nameserver")) != NULL) {
229 memcpy(cp_nons, cp, ncp - cp);
232 if ((ncp != cp && ncp[-1] != '\n') || !issep(ncp[10])) {
233 memcpy(cp_nons, ncp, 9);
235 cp = ncp + 9; /* Can't match "nameserver" at cp... */
239 for (cp = ncp + 11; issep(*cp); cp++) /* Skip whitespace */
242 for (ncp = cp; isip(*ncp); ncp++) /* Jump over IP */
247 if (n < 2 && inet_aton(cp, ipcp->ns.dns))
251 if ((cp = strchr(ncp, '\n')) == NULL) /* Point at next line */
252 cp = ncp + strlen(ncp);
256 strcpy(cp_nons, cp); /* Copy the end - including the NUL */
257 cp_nons += strlen(cp_nons) - 1;
258 while (cp_nons >= ipcp->ns.resolv_nons && *cp_nons == '\n')
260 if (n == 2 && ipcp->ns.dns[0].s_addr == INADDR_ANY) {
261 ipcp->ns.dns[0].s_addr = ipcp->ns.dns[1].s_addr;
262 ipcp->ns.dns[1].s_addr = INADDR_ANY;
264 bundle_AdjustDNS(ipcp->fsm.bundle);
267 log_Printf(LogERROR, "Failed to stat opened %s: %s\n",
268 _PATH_RESCONF, strerror(errno));
275 ipcp_WriteDNS(struct ipcp *ipcp)
281 if (ipcp->ns.dns[0].s_addr == INADDR_ANY &&
282 ipcp->ns.dns[1].s_addr == INADDR_ANY) {
283 log_Printf(LogIPCP, "%s not modified: All nameservers NAKd\n",
288 if (ipcp->ns.dns[0].s_addr == INADDR_ANY) {
289 ipcp->ns.dns[0].s_addr = ipcp->ns.dns[1].s_addr;
290 ipcp->ns.dns[1].s_addr = INADDR_ANY;
294 if ((fp = ID0fopen(_PATH_RESCONF, "w")) != NULL) {
296 if (ipcp->ns.resolv_nons)
297 fputs(ipcp->ns.resolv_nons, fp);
298 paddr = inet_ntoa(ipcp->ns.dns[0]);
299 log_Printf(LogIPCP, "Primary nameserver set to %s\n", paddr);
300 fprintf(fp, "\nnameserver %s\n", paddr);
301 if (ipcp->ns.dns[1].s_addr != INADDR_ANY &&
302 ipcp->ns.dns[1].s_addr != INADDR_NONE &&
303 ipcp->ns.dns[1].s_addr != ipcp->ns.dns[0].s_addr) {
304 paddr = inet_ntoa(ipcp->ns.dns[1]);
305 log_Printf(LogIPCP, "Secondary nameserver set to %s\n", paddr);
306 fprintf(fp, "nameserver %s\n", paddr);
308 if (fclose(fp) == EOF) {
309 log_Printf(LogERROR, "write(): Failed updating %s: %s\n", _PATH_RESCONF,
320 ipcp_RestoreDNS(struct ipcp *ipcp)
322 if (ipcp->ns.resolver) {
327 if ((fd = ID0open(_PATH_RESCONF, O_WRONLY|O_TRUNC, 0644)) != -1) {
328 len = strlen(ipcp->ns.resolv);
329 if ((got = write(fd, ipcp->ns.resolv, len)) != len) {
331 log_Printf(LogERROR, "Failed rewriting %s: write: %s\n",
332 _PATH_RESCONF, strerror(errno));
334 log_Printf(LogERROR, "Failed rewriting %s: wrote %lu of %lu\n",
335 _PATH_RESCONF, (unsigned long)got, (unsigned long)len);
339 log_Printf(LogERROR, "Failed rewriting %s: open: %s\n", _PATH_RESCONF,
341 } else if (remove(_PATH_RESCONF) == -1)
342 log_Printf(LogERROR, "Failed removing %s: %s\n", _PATH_RESCONF,
348 ipcp_Show(struct cmdargs const *arg)
350 struct ipcp *ipcp = &arg->bundle->ncp.ipcp;
352 prompt_Printf(arg->prompt, "%s [%s]\n", ipcp->fsm.name,
353 State2Nam(ipcp->fsm.state));
354 if (ipcp->fsm.state == ST_OPENED) {
355 prompt_Printf(arg->prompt, " His side: %s, %s\n",
356 inet_ntoa(ipcp->peer_ip), vj2asc(ipcp->peer_compproto));
357 prompt_Printf(arg->prompt, " My side: %s, %s\n",
358 inet_ntoa(ipcp->my_ip), vj2asc(ipcp->my_compproto));
359 prompt_Printf(arg->prompt, " Queued packets: %lu\n",
360 (unsigned long)ipcp_QueueLen(ipcp));
363 prompt_Printf(arg->prompt, "\nDefaults:\n");
364 prompt_Printf(arg->prompt, " FSM retry = %us, max %u Config"
365 " REQ%s, %u Term REQ%s\n", ipcp->cfg.fsm.timeout,
366 ipcp->cfg.fsm.maxreq, ipcp->cfg.fsm.maxreq == 1 ? "" : "s",
367 ipcp->cfg.fsm.maxtrm, ipcp->cfg.fsm.maxtrm == 1 ? "" : "s");
368 prompt_Printf(arg->prompt, " My Address: %s\n",
369 ncprange_ntoa(&ipcp->cfg.my_range));
370 if (ipcp->cfg.HaveTriggerAddress)
371 prompt_Printf(arg->prompt, " Trigger address: %s\n",
372 inet_ntoa(ipcp->cfg.TriggerAddress));
374 prompt_Printf(arg->prompt, " VJ compression: %s (%d slots %s slot "
375 "compression)\n", command_ShowNegval(ipcp->cfg.vj.neg),
376 ipcp->cfg.vj.slots, ipcp->cfg.vj.slotcomp ? "with" : "without");
378 if (iplist_isvalid(&ipcp->cfg.peer_list))
379 prompt_Printf(arg->prompt, " His Address: %s\n",
380 ipcp->cfg.peer_list.src);
382 prompt_Printf(arg->prompt, " His Address: %s\n",
383 ncprange_ntoa(&ipcp->cfg.peer_range));
385 prompt_Printf(arg->prompt, " DNS: %s",
386 ipcp->cfg.ns.dns[0].s_addr == INADDR_NONE ?
387 "none" : inet_ntoa(ipcp->cfg.ns.dns[0]));
388 if (ipcp->cfg.ns.dns[1].s_addr != INADDR_NONE)
389 prompt_Printf(arg->prompt, ", %s",
390 inet_ntoa(ipcp->cfg.ns.dns[1]));
391 prompt_Printf(arg->prompt, ", %s\n",
392 command_ShowNegval(ipcp->cfg.ns.dns_neg));
393 prompt_Printf(arg->prompt, " Resolver DNS: %s",
394 ipcp->ns.dns[0].s_addr == INADDR_NONE ?
395 "none" : inet_ntoa(ipcp->ns.dns[0]));
396 if (ipcp->ns.dns[1].s_addr != INADDR_NONE &&
397 ipcp->ns.dns[1].s_addr != ipcp->ns.dns[0].s_addr)
398 prompt_Printf(arg->prompt, ", %s",
399 inet_ntoa(ipcp->ns.dns[1]));
400 prompt_Printf(arg->prompt, "\n NetBIOS NS: %s, ",
401 inet_ntoa(ipcp->cfg.ns.nbns[0]));
402 prompt_Printf(arg->prompt, "%s\n\n",
403 inet_ntoa(ipcp->cfg.ns.nbns[1]));
405 throughput_disp(&ipcp->throughput, arg->prompt);
411 ipcp_vjset(struct cmdargs const *arg)
413 if (arg->argc != arg->argn+2)
415 if (!strcasecmp(arg->argv[arg->argn], "slots")) {
418 slots = atoi(arg->argv[arg->argn+1]);
419 if (slots < 4 || slots > 16)
421 arg->bundle->ncp.ipcp.cfg.vj.slots = slots;
423 } else if (!strcasecmp(arg->argv[arg->argn], "slotcomp")) {
424 if (!strcasecmp(arg->argv[arg->argn+1], "on"))
425 arg->bundle->ncp.ipcp.cfg.vj.slotcomp = 1;
426 else if (!strcasecmp(arg->argv[arg->argn+1], "off"))
427 arg->bundle->ncp.ipcp.cfg.vj.slotcomp = 0;
436 ipcp_Init(struct ipcp *ipcp, struct bundle *bundle, struct link *l,
437 const struct fsm_parent *parent)
441 char name[MAXHOSTNAMELEN];
442 static const char * const timer_names[] =
443 {"IPCP restart", "IPCP openmode", "IPCP stopped"};
445 fsm_Init(&ipcp->fsm, "IPCP", PROTO_IPCP, 1, IPCP_MAXCODE, LogIPCP,
446 bundle, l, parent, &ipcp_Callbacks, timer_names);
448 ipcp->cfg.vj.slots = DEF_VJ_STATES;
449 ipcp->cfg.vj.slotcomp = 1;
450 memset(&ipcp->cfg.my_range, '\0', sizeof ipcp->cfg.my_range);
452 host.s_addr = htonl(INADDR_LOOPBACK);
453 ipcp->cfg.netmask.s_addr = INADDR_ANY;
454 if (gethostname(name, sizeof name) == 0) {
455 hp = gethostbyname(name);
456 if (hp && hp->h_addrtype == AF_INET && hp->h_length == sizeof host.s_addr)
457 memcpy(&host.s_addr, hp->h_addr, sizeof host.s_addr);
459 ncprange_setip4(&ipcp->cfg.my_range, host, ipcp->cfg.netmask);
460 ncprange_setip4(&ipcp->cfg.peer_range, ipcp->cfg.netmask, ipcp->cfg.netmask);
462 iplist_setsrc(&ipcp->cfg.peer_list, "");
463 ipcp->cfg.HaveTriggerAddress = 0;
465 ipcp->cfg.ns.dns[0].s_addr = INADDR_NONE;
466 ipcp->cfg.ns.dns[1].s_addr = INADDR_NONE;
467 ipcp->cfg.ns.dns_neg = 0;
468 ipcp->cfg.ns.nbns[0].s_addr = INADDR_ANY;
469 ipcp->cfg.ns.nbns[1].s_addr = INADDR_ANY;
471 ipcp->cfg.fsm.timeout = DEF_FSMRETRY;
472 ipcp->cfg.fsm.maxreq = DEF_FSMTRIES;
473 ipcp->cfg.fsm.maxtrm = DEF_FSMTRIES;
474 ipcp->cfg.vj.neg = NEG_ENABLED|NEG_ACCEPTED;
476 memset(&ipcp->vj, '\0', sizeof ipcp->vj);
478 ipcp->ns.resolv = NULL;
479 ipcp->ns.resolv_nons = NULL;
480 ipcp->ns.writable = 1;
483 throughput_init(&ipcp->throughput, SAMPLE_PERIOD);
484 memset(ipcp->Queue, '\0', sizeof ipcp->Queue);
485 ipcp_Setup(ipcp, INADDR_NONE);
489 ipcp_Destroy(struct ipcp *ipcp)
491 throughput_destroy(&ipcp->throughput);
493 if (ipcp->ns.resolv != NULL) {
494 free(ipcp->ns.resolv);
495 ipcp->ns.resolv = NULL;
497 if (ipcp->ns.resolv_nons != NULL) {
498 free(ipcp->ns.resolv_nons);
499 ipcp->ns.resolv_nons = NULL;
504 ipcp_SetLink(struct ipcp *ipcp, struct link *l)
510 ipcp_Setup(struct ipcp *ipcp, u_int32_t mask)
512 struct iface *iface = ipcp->fsm.bundle->iface;
513 struct ncpaddr ipaddr;
517 ipcp->fsm.open_mode = 0;
518 ipcp->ifmask.s_addr = mask == INADDR_NONE ? ipcp->cfg.netmask.s_addr : mask;
520 if (iplist_isvalid(&ipcp->cfg.peer_list)) {
521 /* Try to give the peer a previously configured IP address */
522 for (n = 0; n < iface->addrs; n++) {
523 if (!ncpaddr_getip4(&iface->addr[n].peer, &peer))
525 if ((pos = iplist_ip2pos(&ipcp->cfg.peer_list, peer)) != -1) {
526 ncpaddr_setip4(&ipaddr, iplist_setcurpos(&ipcp->cfg.peer_list, pos));
530 if (n == iface->addrs)
531 /* Ok, so none of 'em fit.... pick a random one */
532 ncpaddr_setip4(&ipaddr, iplist_setrandpos(&ipcp->cfg.peer_list));
534 ncprange_sethost(&ipcp->cfg.peer_range, &ipaddr);
539 ncprange_getip4addr(&ipcp->cfg.peer_range, &ipcp->peer_ip);
540 ipcp->peer_compproto = 0;
542 if (ipcp->cfg.HaveTriggerAddress) {
544 * Some implementations of PPP require that we send a
545 * *special* value as our address, even though the rfc specifies
546 * full negotiation (e.g. "0.0.0.0" or Not "0.0.0.0").
548 ipcp->my_ip = ipcp->cfg.TriggerAddress;
549 log_Printf(LogIPCP, "Using trigger address %s\n",
550 inet_ntoa(ipcp->cfg.TriggerAddress));
553 * Otherwise, if we've used an IP number before and it's still within
554 * the network specified on the ``set ifaddr'' line, we really
555 * want to keep that IP number so that we can keep any existing
556 * connections that are bound to that IP.
558 for (n = 0; n < iface->addrs; n++) {
559 ncprange_getaddr(&iface->addr[n].ifa, &ipaddr);
560 if (ncprange_contains(&ipcp->cfg.my_range, &ipaddr)) {
561 ncpaddr_getip4(&ipaddr, &ipcp->my_ip);
565 if (n == iface->addrs)
566 ncprange_getip4addr(&ipcp->cfg.my_range, &ipcp->my_ip);
569 if (IsEnabled(ipcp->cfg.vj.neg)
571 || (ipcp->fsm.bundle->radius.valid && ipcp->fsm.bundle->radius.vj)
574 ipcp->my_compproto = (PROTO_VJCOMP << 16) +
575 ((ipcp->cfg.vj.slots - 1) << 8) +
576 ipcp->cfg.vj.slotcomp;
578 ipcp->my_compproto = 0;
579 sl_compress_init(&ipcp->vj.cslc, ipcp->cfg.vj.slots - 1);
581 ipcp->peer_reject = 0;
584 /* Copy startup values into ipcp->ns.dns */
585 if (ipcp->cfg.ns.dns[0].s_addr != INADDR_NONE)
586 memcpy(ipcp->ns.dns, ipcp->cfg.ns.dns, sizeof ipcp->ns.dns);
590 numaddresses(struct in_addr mask)
592 u_int32_t bit, haddr;
595 haddr = ntohl(mask.s_addr);
608 ipcp_proxyarp(struct ipcp *ipcp,
609 int (*proxyfun)(struct bundle *, struct in_addr, int),
610 const struct iface_addr *addr)
612 struct bundle *bundle = ipcp->fsm.bundle;
613 struct in_addr peer, mask, ip;
616 if (!ncpaddr_getip4(&addr->peer, &peer)) {
617 log_Printf(LogERROR, "Oops, ipcp_proxyarp() called with unexpected addr\n");
621 if ((s = ID0socket(PF_INET, SOCK_DGRAM, 0)) == -1) {
622 log_Printf(LogERROR, "ipcp_proxyarp: socket: %s\n",
629 if (Enabled(bundle, OPT_PROXYALL)) {
630 ncprange_getip4mask(&addr->ifa, &mask);
631 if ((n = numaddresses(mask)) > 256) {
632 log_Printf(LogWARN, "%s: Too many addresses for proxyall\n",
633 ncprange_ntoa(&addr->ifa));
636 ip.s_addr = peer.s_addr & mask.s_addr;
638 ip.s_addr = htonl(ntohl(ip.s_addr) + 1);
642 if (!((ip.s_addr ^ peer.s_addr) & mask.s_addr)) {
643 if (!(ret = (*proxyfun)(bundle, ip, s)))
647 ip.s_addr = htonl(ntohl(ip.s_addr) + 1);
650 } else if (Enabled(bundle, OPT_PROXY))
651 ret = (*proxyfun)(bundle, peer, s);
659 ipcp_SetIPaddress(struct ipcp *ipcp, struct in_addr myaddr,
660 struct in_addr hisaddr)
662 struct bundle *bundle = ipcp->fsm.bundle;
663 struct ncpaddr myncpaddr, hisncpaddr;
664 struct ncprange myrange;
666 struct sockaddr_storage ssdst, ssgw, ssmask;
667 struct sockaddr *sadst, *sagw, *samask;
669 sadst = (struct sockaddr *)&ssdst;
670 sagw = (struct sockaddr *)&ssgw;
671 samask = (struct sockaddr *)&ssmask;
673 ncpaddr_setip4(&hisncpaddr, hisaddr);
674 ncpaddr_setip4(&myncpaddr, myaddr);
675 ncprange_sethost(&myrange, &myncpaddr);
677 mask = addr2mask(myaddr);
679 if (ipcp->ifmask.s_addr != INADDR_ANY &&
680 (ipcp->ifmask.s_addr & mask.s_addr) == mask.s_addr)
681 ncprange_setip4mask(&myrange, ipcp->ifmask);
683 if (!iface_Add(bundle->iface, &bundle->ncp, &myrange, &hisncpaddr,
684 IFACE_ADD_FIRST|IFACE_FORCE_ADD|IFACE_SYSTEM))
687 if (!Enabled(bundle, OPT_IFACEALIAS))
688 iface_Clear(bundle->iface, &bundle->ncp, AF_INET,
689 IFACE_CLEAR_ALIASES|IFACE_SYSTEM);
691 if (bundle->ncp.cfg.sendpipe > 0 || bundle->ncp.cfg.recvpipe > 0) {
692 ncprange_getsa(&myrange, &ssgw, &ssmask);
693 ncpaddr_getsa(&hisncpaddr, &ssdst);
694 rt_Update(bundle, sadst, sagw, samask);
697 if (Enabled(bundle, OPT_SROUTES))
698 route_Change(bundle, bundle->ncp.route, &myncpaddr, &hisncpaddr);
701 if (bundle->radius.valid)
702 route_Change(bundle, bundle->radius.routes, &myncpaddr, &hisncpaddr);
708 static struct in_addr
709 ChooseHisAddr(struct bundle *bundle, struct in_addr gw)
714 for (f = 0; f < bundle->ncp.ipcp.cfg.peer_list.nItems; f++) {
715 try = iplist_next(&bundle->ncp.ipcp.cfg.peer_list);
716 log_Printf(LogDEBUG, "ChooseHisAddr: Check item %ld (%s)\n",
718 if (ipcp_SetIPaddress(&bundle->ncp.ipcp, gw, try)) {
719 log_Printf(LogIPCP, "Selected IP address %s\n", inet_ntoa(try));
724 if (f == bundle->ncp.ipcp.cfg.peer_list.nItems) {
725 log_Printf(LogDEBUG, "ChooseHisAddr: All addresses in use !\n");
726 try.s_addr = INADDR_ANY;
733 IpcpInitRestartCounter(struct fsm *fp, int what)
735 /* Set fsm timer load */
736 struct ipcp *ipcp = fsm2ipcp(fp);
738 fp->FsmTimer.load = ipcp->cfg.fsm.timeout * SECTICKS;
741 fp->restart = ipcp->cfg.fsm.maxreq;
744 fp->restart = ipcp->cfg.fsm.maxtrm;
753 IpcpSendConfigReq(struct fsm *fp)
755 /* Send config REQ please */
756 struct physical *p = link2physical(fp->link);
757 struct ipcp *ipcp = fsm2ipcp(fp);
761 o = (struct fsm_opt *)buff;
763 if ((p && !physical_IsSync(p)) || !REJECTED(ipcp, TY_IPADDR)) {
764 memcpy(o->data, &ipcp->my_ip.s_addr, 4);
765 INC_FSM_OPT(TY_IPADDR, 6, o);
768 if (ipcp->my_compproto && !REJECTED(ipcp, TY_COMPPROTO)) {
769 if (ipcp->heis1172) {
770 u_int16_t proto = PROTO_VJCOMP;
772 ua_htons(&proto, o->data);
773 INC_FSM_OPT(TY_COMPPROTO, 4, o);
777 req.proto = htons(ipcp->my_compproto >> 16);
778 req.slots = (ipcp->my_compproto >> 8) & 255;
779 req.compcid = ipcp->my_compproto & 1;
780 memcpy(o->data, &req, 4);
781 INC_FSM_OPT(TY_COMPPROTO, 6, o);
785 if (IsEnabled(ipcp->cfg.ns.dns_neg)) {
786 if (!REJECTED(ipcp, TY_PRIMARY_DNS - TY_ADJUST_NS)) {
787 memcpy(o->data, &ipcp->ns.dns[0].s_addr, 4);
788 INC_FSM_OPT(TY_PRIMARY_DNS, 6, o);
791 if (!REJECTED(ipcp, TY_SECONDARY_DNS - TY_ADJUST_NS)) {
792 memcpy(o->data, &ipcp->ns.dns[1].s_addr, 4);
793 INC_FSM_OPT(TY_SECONDARY_DNS, 6, o);
797 fsm_Output(fp, CODE_CONFIGREQ, fp->reqid, buff, (u_char *)o - buff,
802 IpcpSentTerminateReq(struct fsm *fp)
804 /* Term REQ just sent by FSM */
808 IpcpSendTerminateAck(struct fsm *fp, u_char id)
810 /* Send Term ACK please */
811 fsm_Output(fp, CODE_TERMACK, id, NULL, 0, MB_IPCPOUT);
815 IpcpLayerStart(struct fsm *fp)
817 /* We're about to start up ! */
818 struct ipcp *ipcp = fsm2ipcp(fp);
820 log_Printf(LogIPCP, "%s: LayerStart.\n", fp->link->name);
821 throughput_start(&ipcp->throughput, "IPCP throughput",
822 Enabled(fp->bundle, OPT_THROUGHPUT));
823 fp->more.reqs = fp->more.naks = fp->more.rejs = ipcp->cfg.fsm.maxreq * 3;
828 IpcpLayerFinish(struct fsm *fp)
831 struct ipcp *ipcp = fsm2ipcp(fp);
833 log_Printf(LogIPCP, "%s: LayerFinish.\n", fp->link->name);
834 throughput_stop(&ipcp->throughput);
835 throughput_log(&ipcp->throughput, LogIPCP, NULL);
839 * Called from iface_Add() via ncp_IfaceAddrAdded()
842 ipcp_IfaceAddrAdded(struct ipcp *ipcp, const struct iface_addr *addr)
844 struct bundle *bundle = ipcp->fsm.bundle;
846 if (Enabled(bundle, OPT_PROXY) || Enabled(bundle, OPT_PROXYALL))
847 ipcp_proxyarp(ipcp, arp_SetProxy, addr);
851 * Called from iface_Clear() and iface_Delete() via ncp_IfaceAddrDeleted()
854 ipcp_IfaceAddrDeleted(struct ipcp *ipcp, const struct iface_addr *addr)
856 struct bundle *bundle = ipcp->fsm.bundle;
858 if (Enabled(bundle, OPT_PROXY) || Enabled(bundle, OPT_PROXYALL))
859 ipcp_proxyarp(ipcp, arp_ClearProxy, addr);
863 IpcpLayerDown(struct fsm *fp)
865 /* About to come down */
866 struct ipcp *ipcp = fsm2ipcp(fp);
867 static int recursing;
871 snprintf(addr, sizeof addr, "%s", inet_ntoa(ipcp->my_ip));
872 log_Printf(LogIPCP, "%s: LayerDown: %s\n", fp->link->name, addr);
875 radius_Account(&fp->bundle->radius, &fp->bundle->radacct,
876 fp->bundle->links, RAD_STOP, &ipcp->peer_ip, &ipcp->ifmask,
879 if (fp->bundle->radius.cfg.file && fp->bundle->radius.filterid)
880 system_Select(fp->bundle, fp->bundle->radius.filterid, LINKDOWNFILE,
885 * XXX this stuff should really live in the FSM. Our config should
886 * associate executable sections in files with events.
888 if (system_Select(fp->bundle, addr, LINKDOWNFILE, NULL, NULL) < 0) {
889 if (bundle_GetLabel(fp->bundle)) {
890 if (system_Select(fp->bundle, bundle_GetLabel(fp->bundle),
891 LINKDOWNFILE, NULL, NULL) < 0)
892 system_Select(fp->bundle, "MYADDR", LINKDOWNFILE, NULL, NULL);
894 system_Select(fp->bundle, "MYADDR", LINKDOWNFILE, NULL, NULL);
897 ipcp_Setup(ipcp, INADDR_NONE);
903 ipcp_InterfaceUp(struct ipcp *ipcp)
905 if (!ipcp_SetIPaddress(ipcp, ipcp->my_ip, ipcp->peer_ip)) {
906 log_Printf(LogERROR, "ipcp_InterfaceUp: unable to set ip address\n");
910 if (!iface_SetFlags(ipcp->fsm.bundle->iface->name, IFF_UP)) {
911 log_Printf(LogERROR, "ipcp_InterfaceUp: Can't set the IFF_UP flag on %s\n",
912 ipcp->fsm.bundle->iface->name);
917 if (ipcp->fsm.bundle->NatEnabled)
918 PacketAliasSetAddress(ipcp->my_ip);
925 IpcpLayerUp(struct fsm *fp)
928 struct ipcp *ipcp = fsm2ipcp(fp);
931 log_Printf(LogIPCP, "%s: LayerUp.\n", fp->link->name);
932 snprintf(tbuff, sizeof tbuff, "%s", inet_ntoa(ipcp->my_ip));
933 log_Printf(LogIPCP, "myaddr %s hisaddr = %s\n",
934 tbuff, inet_ntoa(ipcp->peer_ip));
936 if (ipcp->peer_compproto >> 16 == PROTO_VJCOMP)
937 sl_compress_init(&ipcp->vj.cslc, (ipcp->peer_compproto >> 8) & 255);
939 if (!ipcp_InterfaceUp(ipcp))
943 radius_Account(&fp->bundle->radius, &fp->bundle->radacct, fp->bundle->links,
944 RAD_START, &ipcp->peer_ip, &ipcp->ifmask, &ipcp->throughput);
946 if (fp->bundle->radius.cfg.file && fp->bundle->radius.filterid)
947 system_Select(fp->bundle, fp->bundle->radius.filterid, LINKUPFILE,
952 * XXX this stuff should really live in the FSM. Our config should
953 * associate executable sections in files with events.
955 if (system_Select(fp->bundle, tbuff, LINKUPFILE, NULL, NULL) < 0) {
956 if (bundle_GetLabel(fp->bundle)) {
957 if (system_Select(fp->bundle, bundle_GetLabel(fp->bundle),
958 LINKUPFILE, NULL, NULL) < 0)
959 system_Select(fp->bundle, "MYADDR", LINKUPFILE, NULL, NULL);
961 system_Select(fp->bundle, "MYADDR", LINKUPFILE, NULL, NULL);
964 fp->more.reqs = fp->more.naks = fp->more.rejs = ipcp->cfg.fsm.maxreq * 3;
965 log_DisplayPrompts();
971 ipcp_ValidateReq(struct ipcp *ipcp, struct in_addr ip, struct fsm_decode *dec)
973 struct bundle *bundle = ipcp->fsm.bundle;
974 struct iface *iface = bundle->iface;
975 struct in_addr myaddr, peer;
978 if (iplist_isvalid(&ipcp->cfg.peer_list)) {
979 ncprange_getip4addr(&ipcp->cfg.my_range, &myaddr);
980 if (ip.s_addr == INADDR_ANY ||
981 iplist_ip2pos(&ipcp->cfg.peer_list, ip) < 0 ||
982 !ipcp_SetIPaddress(ipcp, myaddr, ip)) {
983 log_Printf(LogIPCP, "%s: Address invalid or already in use\n",
986 * If we've already had a valid address configured for the peer,
987 * try NAKing with that so that we don't have to upset things
990 for (n = 0; n < iface->addrs; n++) {
991 if (!ncpaddr_getip4(&iface->addr[n].peer, &peer))
993 if (iplist_ip2pos(&ipcp->cfg.peer_list, peer) >= 0) {
994 ipcp->peer_ip = peer;
999 if (n == iface->addrs) {
1000 /* Just pick an IP number from our list */
1001 ipcp->peer_ip = ChooseHisAddr(bundle, myaddr);
1004 if (ipcp->peer_ip.s_addr == INADDR_ANY) {
1005 *dec->rejend++ = TY_IPADDR;
1007 memcpy(dec->rejend, &ip.s_addr, 4);
1010 *dec->nakend++ = TY_IPADDR;
1012 memcpy(dec->nakend, &ipcp->peer_ip.s_addr, 4);
1017 } else if (ip.s_addr == INADDR_ANY ||
1018 !ncprange_containsip4(&ipcp->cfg.peer_range, ip)) {
1020 * If the destination address is not acceptable, NAK with what we
1023 *dec->nakend++ = TY_IPADDR;
1025 for (n = 0; n < iface->addrs; n++)
1026 if (ncprange_contains(&ipcp->cfg.peer_range, &iface->addr[n].peer)) {
1027 /* We prefer the already-configured address */
1028 ncpaddr_getip4addr(&iface->addr[n].peer, (u_int32_t *)dec->nakend);
1032 if (n == iface->addrs)
1033 memcpy(dec->nakend, &ipcp->peer_ip.s_addr, 4);
1040 *dec->ackend++ = TY_IPADDR;
1042 memcpy(dec->ackend, &ip.s_addr, 4);
1047 IpcpDecodeConfig(struct fsm *fp, u_char *cp, u_char *end, int mode_type,
1048 struct fsm_decode *dec)
1050 /* Deal with incoming PROTO_IPCP */
1051 struct ncpaddr ncpaddr;
1052 struct ipcp *ipcp = fsm2ipcp(fp);
1054 u_int32_t compproto;
1055 struct compreq *pcomp;
1056 struct in_addr ipaddr, dstipaddr, have_ip;
1057 char tbuff[100], tbuff2[100];
1058 struct fsm_opt *opt, nak;
1062 while (end - cp >= sizeof(opt->hdr)) {
1063 if ((opt = fsm_readopt(&cp)) == NULL)
1066 snprintf(tbuff, sizeof tbuff, " %s[%d]", protoname(opt->hdr.id),
1069 switch (opt->hdr.id) {
1070 case TY_IPADDR: /* RFC1332 */
1071 memcpy(&ipaddr.s_addr, opt->data, 4);
1072 log_Printf(LogIPCP, "%s %s\n", tbuff, inet_ntoa(ipaddr));
1074 switch (mode_type) {
1077 ipcp_ValidateReq(ipcp, ipaddr, dec);
1081 if (ncprange_containsip4(&ipcp->cfg.my_range, ipaddr)) {
1082 /* Use address suggested by peer */
1083 snprintf(tbuff2, sizeof tbuff2, "%s changing address: %s ", tbuff,
1084 inet_ntoa(ipcp->my_ip));
1085 log_Printf(LogIPCP, "%s --> %s\n", tbuff2, inet_ntoa(ipaddr));
1086 ipcp->my_ip = ipaddr;
1087 ncpaddr_setip4(&ncpaddr, ipcp->my_ip);
1088 bundle_AdjustFilters(fp->bundle, &ncpaddr, NULL);
1090 log_Printf(log_IsKept(LogIPCP) ? LogIPCP : LogPHASE,
1091 "%s: Unacceptable address!\n", inet_ntoa(ipaddr));
1092 fsm_Close(&ipcp->fsm);
1097 ipcp->peer_reject |= (1 << opt->hdr.id);
1103 pcomp = (struct compreq *)opt->data;
1104 compproto = (ntohs(pcomp->proto) << 16) + (pcomp->slots << 8) +
1106 log_Printf(LogIPCP, "%s %s\n", tbuff, vj2asc(compproto));
1108 switch (mode_type) {
1110 if (!IsAccepted(ipcp->cfg.vj.neg))
1113 switch (opt->hdr.len) {
1114 case 4: /* RFC1172 */
1115 if (ntohs(pcomp->proto) == PROTO_VJCOMP) {
1116 log_Printf(LogWARN, "Peer is speaking RFC1172 compression "
1119 ipcp->peer_compproto = compproto;
1122 pcomp->proto = htons(PROTO_VJCOMP);
1123 nak.hdr.id = TY_COMPPROTO;
1125 memcpy(nak.data, &pcomp, 2);
1129 case 6: /* RFC1332 */
1130 if (ntohs(pcomp->proto) == PROTO_VJCOMP) {
1131 if (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 < MIN_VJ_STATES)
1167 pcomp->slots = MIN_VJ_STATES;
1168 compproto = (ntohs(pcomp->proto) << 16) + (pcomp->slots << 8) +
1172 log_Printf(LogIPCP, "%s changing compproto: %08x --> %08x\n",
1173 tbuff, ipcp->my_compproto, compproto);
1174 ipcp->my_compproto = compproto;
1178 ipcp->peer_reject |= (1 << opt->hdr.id);
1183 case TY_IPADDRS: /* RFC1172 */
1184 memcpy(&ipaddr.s_addr, opt->data, 4);
1185 memcpy(&dstipaddr.s_addr, opt->data + 4, 4);
1186 snprintf(tbuff2, sizeof tbuff2, "%s %s,", tbuff, inet_ntoa(ipaddr));
1187 log_Printf(LogIPCP, "%s %s\n", tbuff2, inet_ntoa(dstipaddr));
1189 switch (mode_type) {
1200 case TY_PRIMARY_DNS: /* DNS negotiation (rfc1877) */
1201 case TY_SECONDARY_DNS:
1202 memcpy(&ipaddr.s_addr, opt->data, 4);
1203 log_Printf(LogIPCP, "%s %s\n", tbuff, inet_ntoa(ipaddr));
1205 switch (mode_type) {
1207 if (!IsAccepted(ipcp->cfg.ns.dns_neg)) {
1208 ipcp->my_reject |= (1 << (opt->hdr.id - TY_ADJUST_NS));
1212 have_ip = ipcp->ns.dns[opt->hdr.id == TY_PRIMARY_DNS ? 0 : 1];
1214 if (opt->hdr.id == TY_PRIMARY_DNS && ipaddr.s_addr != have_ip.s_addr &&
1215 ipaddr.s_addr == ipcp->ns.dns[1].s_addr) {
1216 /* Swap 'em 'round */
1217 ipcp->ns.dns[0] = ipcp->ns.dns[1];
1218 ipcp->ns.dns[1] = have_ip;
1219 have_ip = ipcp->ns.dns[0];
1222 if (ipaddr.s_addr != have_ip.s_addr) {
1224 * The client has got the DNS stuff wrong (first request) so
1225 * we'll tell 'em how it is
1227 nak.hdr.id = opt->hdr.id;
1229 memcpy(nak.data, &have_ip.s_addr, 4);
1233 * Otherwise they have it right (this time) so we send a ack packet
1234 * back confirming it... end of story
1241 if (IsEnabled(ipcp->cfg.ns.dns_neg)) {
1243 memcpy(&ipcp->ns.dns[opt->hdr.id == TY_PRIMARY_DNS ? 0 : 1].s_addr,
1248 case MODE_REJ: /* Can't do much, stop asking */
1249 ipcp->peer_reject |= (1 << (opt->hdr.id - TY_ADJUST_NS));
1254 case TY_PRIMARY_NBNS: /* M$ NetBIOS nameserver hack (rfc1877) */
1255 case TY_SECONDARY_NBNS:
1256 memcpy(&ipaddr.s_addr, opt->data, 4);
1257 log_Printf(LogIPCP, "%s %s\n", tbuff, inet_ntoa(ipaddr));
1259 switch (mode_type) {
1262 ipcp->cfg.ns.nbns[opt->hdr.id == TY_PRIMARY_NBNS ? 0 : 1].s_addr;
1264 if (have_ip.s_addr == INADDR_ANY) {
1265 log_Printf(LogIPCP, "NBNS REQ - rejected - nbns not set\n");
1266 ipcp->my_reject |= (1 << (opt->hdr.id - TY_ADJUST_NS));
1271 if (ipaddr.s_addr != have_ip.s_addr) {
1272 nak.hdr.id = opt->hdr.id;
1274 memcpy(nak.data, &have_ip.s_addr, 4);
1281 log_Printf(LogIPCP, "MS NBNS req %d - NAK??\n", opt->hdr.id);
1285 log_Printf(LogIPCP, "MS NBNS req %d - REJ??\n", opt->hdr.id);
1291 if (mode_type != MODE_NOP) {
1292 ipcp->my_reject |= (1 << opt->hdr.id);
1300 if (ipcp->ns.writable) {
1301 log_Printf(LogDEBUG, "Updating resolver\n");
1302 if (!ipcp_WriteDNS(ipcp)) {
1303 ipcp->peer_reject |= (1 << (TY_PRIMARY_DNS - TY_ADJUST_NS));
1304 ipcp->peer_reject |= (1 << (TY_SECONDARY_DNS - TY_ADJUST_NS));
1306 bundle_AdjustDNS(fp->bundle);
1308 log_Printf(LogDEBUG, "Not updating resolver (readonly)\n");
1309 bundle_AdjustDNS(fp->bundle);
1313 if (mode_type != MODE_NOP) {
1314 if (mode_type == MODE_REQ && !ipcp->peer_req) {
1315 if (dec->rejend == dec->rej && dec->nakend == dec->nak) {
1317 * Pretend the peer has requested an IP.
1318 * We do this to ensure that we only send one NAK if the only
1319 * reason for the NAK is because the peer isn't sending a
1320 * TY_IPADDR REQ. This stops us from repeatedly trying to tell
1321 * the peer that we have to have an IP address on their end.
1325 ipaddr.s_addr = INADDR_ANY;
1326 ipcp_ValidateReq(ipcp, ipaddr, dec);
1328 fsm_opt_normalise(dec);
1332 extern struct mbuf *
1333 ipcp_Input(struct bundle *bundle, struct link *l, struct mbuf *bp)
1335 /* Got PROTO_IPCP from link */
1336 m_settype(bp, MB_IPCPIN);
1337 if (bundle_Phase(bundle) == PHASE_NETWORK)
1338 fsm_Input(&bundle->ncp.ipcp.fsm, bp);
1340 if (bundle_Phase(bundle) < PHASE_NETWORK)
1341 log_Printf(LogIPCP, "%s: Error: Unexpected IPCP in phase %s (ignored)\n",
1342 l->name, bundle_PhaseName(bundle));
1349 ipcp_UseHisIPaddr(struct bundle *bundle, struct in_addr hisaddr)
1351 struct ipcp *ipcp = &bundle->ncp.ipcp;
1352 struct in_addr myaddr;
1354 memset(&ipcp->cfg.peer_range, '\0', sizeof ipcp->cfg.peer_range);
1355 iplist_reset(&ipcp->cfg.peer_list);
1356 ipcp->peer_ip = hisaddr;
1357 ncprange_setip4host(&ipcp->cfg.peer_range, hisaddr);
1358 ncprange_getip4addr(&ipcp->cfg.my_range, &myaddr);
1360 return ipcp_SetIPaddress(ipcp, myaddr, hisaddr);
1364 ipcp_UseHisaddr(struct bundle *bundle, const char *hisaddr, int setaddr)
1366 struct in_addr myaddr;
1367 struct ncp *ncp = &bundle->ncp;
1368 struct ipcp *ipcp = &ncp->ipcp;
1369 struct ncpaddr ncpaddr;
1371 /* Use `hisaddr' for the peers address (set iface if `setaddr') */
1372 memset(&ipcp->cfg.peer_range, '\0', sizeof ipcp->cfg.peer_range);
1373 iplist_reset(&ipcp->cfg.peer_list);
1374 if (strpbrk(hisaddr, ",-")) {
1375 iplist_setsrc(&ipcp->cfg.peer_list, hisaddr);
1376 if (iplist_isvalid(&ipcp->cfg.peer_list)) {
1377 iplist_setrandpos(&ipcp->cfg.peer_list);
1378 ipcp->peer_ip = ChooseHisAddr(bundle, ipcp->my_ip);
1379 if (ipcp->peer_ip.s_addr == INADDR_ANY) {
1380 log_Printf(LogWARN, "%s: None available !\n", ipcp->cfg.peer_list.src);
1383 ncprange_setip4host(&ipcp->cfg.peer_range, ipcp->peer_ip);
1385 log_Printf(LogWARN, "%s: Invalid range !\n", hisaddr);
1388 } else if (ncprange_aton(&ipcp->cfg.peer_range, ncp, hisaddr) != 0) {
1389 if (ncprange_family(&ipcp->cfg.my_range) != AF_INET) {
1390 log_Printf(LogWARN, "%s: Not an AF_INET address !\n", hisaddr);
1393 ncprange_getip4addr(&ipcp->cfg.my_range, &myaddr);
1394 ncprange_getip4addr(&ipcp->cfg.peer_range, &ipcp->peer_ip);
1396 if (setaddr && !ipcp_SetIPaddress(ipcp, myaddr, ipcp->peer_ip))
1401 ncpaddr_setip4(&ncpaddr, ipcp->peer_ip);
1402 bundle_AdjustFilters(bundle, NULL, &ncpaddr);
1408 addr2mask(struct in_addr addr)
1410 u_int32_t haddr = ntohl(addr.s_addr);
1412 haddr = IN_CLASSA(haddr) ? IN_CLASSA_NET :
1413 IN_CLASSB(haddr) ? IN_CLASSB_NET :
1415 addr.s_addr = htonl(haddr);
1421 ipcp_QueueLen(struct ipcp *ipcp)
1427 for (q = ipcp->Queue; q < ipcp->Queue + IPCP_QUEUES(ipcp); q++)
1434 ipcp_PushPacket(struct ipcp *ipcp, struct link *l)
1436 struct bundle *bundle = ipcp->fsm.bundle;
1437 struct mqueue *queue;
1441 unsigned alivesecs = 0;
1443 if (ipcp->fsm.state != ST_OPENED)
1447 * If ccp is not open but is required, do nothing.
1449 if (l->ccp.fsm.state != ST_OPENED && ccp_Required(&l->ccp)) {
1450 log_Printf(LogPHASE, "%s: Not transmitting... waiting for CCP\n", l->name);
1454 queue = ipcp->Queue + IPCP_QUEUES(ipcp) - 1;
1457 bp = m_dequeue(queue);
1458 bp = mbuf_Read(bp, &secs, sizeof secs);
1460 m_len = m_length(bp);
1461 if (!FilterCheck(MBUF_CTOP(bp), AF_INET, &bundle->filter.alive,
1465 bundle_StartIdleTimer(bundle, secs);
1467 link_PushPacket(l, bp, bundle, 0, PROTO_IP);
1468 ipcp_AddOutOctets(ipcp, m_len);
1471 } while (queue-- != ipcp->Queue);