2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/param.h>
30 #include <netinet/in.h>
31 #include <netinet/in_systm.h>
32 #include <netinet/ip.h>
33 #include <arpa/inet.h>
34 #include <net/if_dl.h>
35 #include <sys/socket.h>
60 #include "throughput.h"
61 #include "slcompress.h"
70 #include "descriptor.h"
89 peerid_Init(struct peerid *peer)
91 peer->enddisc.class = 0;
92 *peer->enddisc.address = '\0';
93 peer->enddisc.len = 0;
94 *peer->authname = '\0';
98 peerid_Equal(const struct peerid *p1, const struct peerid *p2)
100 return !strcmp(p1->authname, p2->authname) &&
101 p1->enddisc.class == p2->enddisc.class &&
102 p1->enddisc.len == p2->enddisc.len &&
103 !memcmp(p1->enddisc.address, p2->enddisc.address, p1->enddisc.len);
107 inc_seq(unsigned is12bit, u_int32_t seq)
111 if (seq & 0xfffff000)
113 } else if (seq & 0xff000000)
119 isbefore(unsigned is12bit, u_int32_t seq1, u_int32_t seq2)
121 u_int32_t max = (is12bit ? 0xfff : 0xffffff) - 0x200;
124 if (seq2 < 0x200 || seq2 > seq1)
126 } else if ((seq1 > 0x200 || seq2 <= max) && seq1 < seq2)
133 mp_ReadHeader(struct mp *mp, struct mbuf *m, struct mp_header *header)
135 if (mp->local_is12bit) {
138 ua_ntohs(MBUF_CTOP(m), &val);
140 log_Printf(LogWARN, "Oops - MP header without required zero bits\n");
143 header->begin = val & 0x8000 ? 1 : 0;
144 header->end = val & 0x4000 ? 1 : 0;
145 header->seq = val & 0x0fff;
148 ua_ntohl(MBUF_CTOP(m), &header->seq);
149 if (header->seq & 0x3f000000) {
150 log_Printf(LogWARN, "Oops - MP header without required zero bits\n");
153 header->begin = header->seq & 0x80000000 ? 1 : 0;
154 header->end = header->seq & 0x40000000 ? 1 : 0;
155 header->seq &= 0x00ffffff;
161 mp_LayerStart(void *v, struct fsm *fp)
163 /* The given FSM (ccp) is about to start up ! */
167 mp_LayerUp(void *v, struct fsm *fp)
169 /* The given fsm (ccp) is now up */
173 mp_LayerDown(void *v, struct fsm *fp)
175 /* The given FSM (ccp) has been told to come down */
179 mp_LayerFinish(void *v, struct fsm *fp)
181 /* The given fsm (ccp) is now down */
182 if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE)
183 fsm_Open(fp); /* CCP goes to ST_STOPPED */
189 struct mp *mp = (struct mp *)v;
192 percent = MAX(mp->link.stats.total.in.OctetsPerSecond,
193 mp->link.stats.total.out.OctetsPerSecond) * 800 /
194 mp->bundle->bandwidth;
195 if (percent >= mp->cfg.autoload.max) {
196 log_Printf(LogDEBUG, "%d%% saturation - bring a link up ?\n", percent);
197 bundle_AutoAdjust(mp->bundle, percent, AUTO_UP);
198 } else if (percent <= mp->cfg.autoload.min) {
199 log_Printf(LogDEBUG, "%d%% saturation - bring a link down ?\n", percent);
200 bundle_AutoAdjust(mp->bundle, percent, AUTO_DOWN);
205 mp_StopAutoloadTimer(struct mp *mp)
207 throughput_stop(&mp->link.stats.total);
211 mp_CheckAutoloadTimer(struct mp *mp)
213 if (mp->link.stats.total.SamplePeriod != mp->cfg.autoload.period) {
214 throughput_destroy(&mp->link.stats.total);
215 throughput_init(&mp->link.stats.total, mp->cfg.autoload.period);
216 throughput_callback(&mp->link.stats.total, mp_UpDown, mp);
219 if (bundle_WantAutoloadTimer(mp->bundle))
220 throughput_start(&mp->link.stats.total, "MP throughput", 1);
222 mp_StopAutoloadTimer(mp);
226 mp_RestartAutoloadTimer(struct mp *mp)
228 if (mp->link.stats.total.SamplePeriod != mp->cfg.autoload.period)
229 mp_CheckAutoloadTimer(mp);
231 throughput_clear(&mp->link.stats.total, THROUGHPUT_OVERALL, NULL);
235 mp_Init(struct mp *mp, struct bundle *bundle)
237 mp->peer_is12bit = mp->local_is12bit = 0;
238 mp->peer_mrru = mp->local_mrru = 0;
240 peerid_Init(&mp->peer);
249 mp->link.type = LOGICAL_LINK;
250 mp->link.name = "mp";
251 mp->link.len = sizeof *mp;
253 mp->cfg.autoload.period = SAMPLE_PERIOD;
254 mp->cfg.autoload.min = mp->cfg.autoload.max = 0;
255 throughput_init(&mp->link.stats.total, mp->cfg.autoload.period);
256 throughput_callback(&mp->link.stats.total, mp_UpDown, mp);
257 mp->link.stats.parent = NULL;
258 mp->link.stats.gather = 0; /* Let the physical links gather stats */
259 memset(mp->link.Queue, '\0', sizeof mp->link.Queue);
260 memset(mp->link.proto_in, '\0', sizeof mp->link.proto_in);
261 memset(mp->link.proto_out, '\0', sizeof mp->link.proto_out);
263 mp->fsmp.LayerStart = mp_LayerStart;
264 mp->fsmp.LayerUp = mp_LayerUp;
265 mp->fsmp.LayerDown = mp_LayerDown;
266 mp->fsmp.LayerFinish = mp_LayerFinish;
267 mp->fsmp.object = mp;
269 mpserver_Init(&mp->server);
272 mp->cfg.shortseq = NEG_ENABLED|NEG_ACCEPTED;
273 mp->cfg.negenddisc = NEG_ENABLED|NEG_ACCEPTED;
274 mp->cfg.enddisc.class = 0;
275 *mp->cfg.enddisc.address = '\0';
276 mp->cfg.enddisc.len = 0;
278 lcp_Init(&mp->link.lcp, mp->bundle, &mp->link, NULL);
279 ccp_Init(&mp->link.ccp, mp->bundle, &mp->link, &mp->fsmp);
281 link_EmptyStack(&mp->link);
282 link_Stack(&mp->link, &protolayer);
283 link_Stack(&mp->link, &ccplayer);
284 link_Stack(&mp->link, &vjlayer);
286 link_Stack(&mp->link, &natlayer);
291 mp_Up(struct mp *mp, struct datalink *dl)
293 struct lcp *lcp = &dl->physical->link.lcp;
296 /* We're adding a link - do a last validation on our parameters */
297 if (!peerid_Equal(&dl->peer, &mp->peer)) {
298 log_Printf(LogPHASE, "%s: Inappropriate peer !\n", dl->name);
299 log_Printf(LogPHASE, " Attached to peer %s/%s\n", mp->peer.authname,
300 mp_Enddisc(mp->peer.enddisc.class, mp->peer.enddisc.address,
301 mp->peer.enddisc.len));
302 log_Printf(LogPHASE, " New link is peer %s/%s\n", dl->peer.authname,
303 mp_Enddisc(dl->peer.enddisc.class, dl->peer.enddisc.address,
304 dl->peer.enddisc.len));
307 if (mp->local_mrru != lcp->want_mrru ||
308 mp->peer_mrru != lcp->his_mrru ||
309 mp->local_is12bit != lcp->want_shortseq ||
310 mp->peer_is12bit != lcp->his_shortseq) {
311 log_Printf(LogPHASE, "%s: Invalid MRRU/SHORTSEQ MP parameters !\n",
317 /* First link in multilink mode */
319 mp->local_mrru = lcp->want_mrru;
320 mp->peer_mrru = lcp->his_mrru;
321 mp->local_is12bit = lcp->want_shortseq;
322 mp->peer_is12bit = lcp->his_shortseq;
325 throughput_destroy(&mp->link.stats.total);
326 throughput_init(&mp->link.stats.total, mp->cfg.autoload.period);
327 throughput_callback(&mp->link.stats.total, mp_UpDown, mp);
328 memset(mp->link.Queue, '\0', sizeof mp->link.Queue);
329 memset(mp->link.proto_in, '\0', sizeof mp->link.proto_in);
330 memset(mp->link.proto_out, '\0', sizeof mp->link.proto_out);
332 /* Tell the link who it belongs to */
333 dl->physical->link.stats.parent = &mp->link.stats.total;
341 * Now we create our server socket.
342 * If it already exists, join it. Otherwise, create and own it
344 switch (mpserver_Open(&mp->server, &mp->peer)) {
345 case MPSERVER_CONNECTED:
346 log_Printf(LogPHASE, "mp: Transfer link on %s\n",
347 mp->server.socket.sun_path);
348 mp->server.send.dl = dl; /* Defer 'till it's safe to send */
350 case MPSERVER_FAILED:
352 case MPSERVER_LISTENING:
353 log_Printf(LogPHASE, "mp: Listening on %s\n", mp->server.socket.sun_path);
354 log_Printf(LogPHASE, " First link: %s\n", dl->name);
356 /* Re-point our IPCP layer at our MP link */
357 ipcp_SetLink(&mp->bundle->ncp.ipcp, &mp->link);
359 /* Our lcp's already up 'cos of the NULL parent */
360 if (ccp_SetOpenMode(&mp->link.ccp)) {
361 fsm_Up(&mp->link.ccp.fsm);
362 fsm_Open(&mp->link.ccp.fsm);
374 mp_Down(struct mp *mp)
380 mp_StopAutoloadTimer(mp);
382 /* Don't want any more of these */
383 mpserver_Close(&mp->server);
385 /* CCP goes down with a bang */
386 fsm2initial(&mp->link.ccp.fsm);
388 /* Received fragments go in the bit-bucket */
390 next = mp->inbufs->m_nextpkt;
395 peerid_Init(&mp->peer);
401 mp_linkInit(struct mp_link *mplink)
404 mplink->bandwidth = 0;
408 mp_Assemble(struct mp *mp, struct mbuf *m, struct physical *p)
410 struct mp_header mh, h;
411 struct mbuf *q, *last;
415 * When `m' and `p' are NULL, it means our oldest link has gone down.
416 * We want to determine a new min, and process any intermediate stuff
420 if (m && mp_ReadHeader(mp, m, &mh) == 0) {
427 p->dl->mp.seq = mh.seq;
429 seq = mp->seq.min_in;
431 if (mp->seq.min_in == seq) {
433 * We've received new data on the link that has our min (oldest) seq.
434 * Figure out which link now has the smallest (oldest) seq.
438 mp->seq.min_in = (u_int32_t)-1;
439 for (dl = mp->bundle->links; dl; dl = dl->next)
440 if (dl->state == DATALINK_OPEN &&
441 (mp->seq.min_in == -1 ||
442 isbefore(mp->local_is12bit, dl->mp.seq, mp->seq.min_in)))
443 mp->seq.min_in = dl->mp.seq;
447 * Now process as many of our fragments as we can, adding our new
448 * fragment in as we go, and ordering with the oldest at the top of
453 seq = mp->seq.next_in;
465 mp_ReadHeader(mp, q, &h);
467 if (m && isbefore(mp->local_is12bit, mh.seq, h.seq)) {
468 /* Our received fragment fits in before this one, so link it in */
481 /* we're missing something :-( */
482 if (isbefore(mp->local_is12bit, seq, mp->seq.min_in)) {
483 /* we're never gonna get it */
486 /* Zap all older fragments */
487 while (mp->inbufs != q) {
488 log_Printf(LogDEBUG, "Drop frag\n");
489 next = mp->inbufs->m_nextpkt;
495 * Zap everything until the next `end' fragment OR just before
496 * the next `begin' fragment OR 'till seq.min_in - whichever
500 mp_ReadHeader(mp, mp->inbufs, &h);
502 /* We might be able to process this ! */
503 h.seq--; /* We're gonna look for fragment with h.seq+1 */
506 next = mp->inbufs->m_nextpkt;
507 log_Printf(LogDEBUG, "Drop frag %u\n", h.seq);
510 } while (mp->inbufs && (isbefore(mp->local_is12bit, mp->seq.min_in,
514 * Continue processing things from here.
515 * This deals with the possibility that we received a fragment
516 * on the slowest link that invalidates some of our data (because
517 * of the hole at `q'), but where there are subsequent `whole'
518 * packets that have already been received.
521 mp->seq.next_in = seq = inc_seq(mp->local_is12bit, h.seq);
525 /* we may still receive the missing fragment */
528 /* We've got something, reassemble */
529 struct mbuf **frag = &q;
535 mp->inbufs = mp->inbufs->m_nextpkt;
536 len = mp_ReadHeader(mp, *frag, &h);
539 (*frag)->m_offset += len;
540 (*frag)->m_len -= len;
541 (*frag)->m_nextpkt = NULL;
542 if (frag == &q && !h.begin) {
543 log_Printf(LogWARN, "Oops - MP frag %lu should have a begin flag\n",
547 } else if (frag != &q && h.begin) {
548 log_Printf(LogWARN, "Oops - MP frag %lu should have an end flag\n",
551 * Stuff our fragment back at the front of the queue and zap
552 * our half-assembed packet.
554 (*frag)->m_nextpkt = mp->inbufs;
560 h.end = 0; /* just in case it's a whole packet */
563 frag = &(*frag)->m_next;
564 while (*frag != NULL);
569 log_Printf(LogDEBUG, "MP: Reassembled frags %ld-%lu, length %d\n",
570 first, (u_long)h.seq, m_length(q));
571 link_PullPacket(&mp->link, MBUF_CTOP(q), q->m_len, mp->bundle);
575 mp->seq.next_in = seq = inc_seq(mp->local_is12bit, h.seq);
579 /* Look for the next fragment */
580 seq = inc_seq(mp->local_is12bit, seq);
587 /* We still have to find a home for our new fragment */
589 for (q = mp->inbufs; q; last = q, q = q->m_nextpkt) {
590 mp_ReadHeader(mp, q, &h);
591 if (isbefore(mp->local_is12bit, mh.seq, h.seq))
594 /* Our received fragment fits in here */
604 mp_Input(struct bundle *bundle, struct link *l, struct mbuf *bp)
606 struct physical *p = link2physical(l);
608 if (!bundle->ncp.mp.active)
609 /* Let someone else deal with it ! */
613 log_Printf(LogWARN, "DecodePacket: Can't do MP inside MP !\n");
616 m_settype(bp, MB_MPIN);
617 mp_Assemble(&bundle->ncp.mp, bp, p);
624 mp_Output(struct mp *mp, struct bundle *bundle, struct link *l,
625 struct mbuf *m, u_int32_t begin, u_int32_t end)
629 /* Stuff an MP header on the front of our packet and send it */
631 if (mp->peer_is12bit) {
634 val = (begin << 15) | (end << 14) | (u_int16_t)mp->out.seq;
635 ua_htons(&val, prepend);
636 m = m_prepend(m, prepend, 2, 0);
640 val = (begin << 31) | (end << 30) | (u_int32_t)mp->out.seq;
641 ua_htonl(&val, prepend);
642 m = m_prepend(m, prepend, 4, 0);
644 if (log_IsKept(LogDEBUG))
645 log_Printf(LogDEBUG, "MP[frag %d]: Send %d bytes on link `%s'\n",
646 mp->out.seq, m_length(m), l->name);
647 mp->out.seq = inc_seq(mp->peer_is12bit, mp->out.seq);
649 link_PushPacket(l, m, bundle, LINK_QUEUES(l) - 1, PROTO_MP);
653 mp_FillQueues(struct bundle *bundle)
655 struct mp *mp = &bundle->ncp.mp;
656 struct datalink *dl, *fdl;
657 size_t total, add, len;
658 int thislink, nlinks;
659 u_int32_t begin, end;
662 thislink = nlinks = 0;
663 for (fdl = NULL, dl = bundle->links; dl; dl = dl->next) {
664 /* Include non-open links here as mp->out.link will stay more correct */
666 if (thislink == mp->out.link)
682 for (dl = fdl; nlinks > 0; dl = dl->next, nlinks--, thislink++) {
688 if (dl->state != DATALINK_OPEN)
691 if (dl->physical->out)
692 /* this link has suffered a short write. Let it continue */
695 add = link_QueueLen(&dl->physical->link);
697 /* this link has got stuff already queued. Let it continue */
702 if (!link_QueueLen(&mp->link)) {
703 struct datalink *other;
707 * If there's only a single open link in our bundle and we haven't got
708 * MP level link compression, queue outbound traffic directly via that
709 * link's protocol stack rather than using the MP link. This results
710 * in the outbound traffic going out as PROTO_IP rather than PROTO_MP.
712 for (other = dl->next; other; other = other->next)
713 if (other->state == DATALINK_OPEN)
718 if (dl->physical->link.lcp.his_mru < mp->peer_mrru) {
720 * Actually, forget it. This test is done against the MRRU rather
721 * than the packet size so that we don't end up sending some data
722 * in MP fragments and some data in PROTO_IP packets. That's just
723 * too likely to upset some ppp implementations.
730 if (!ip_PushPacket(other ? &mp->link : &dl->physical->link, bundle))
731 /* Nothing else to send */
735 log_Printf(LogDEBUG, "Don't send data as PROTO_IP, MRU < MRRU\n");
737 log_Printf(LogDEBUG, "Sending data as PROTO_IP, not PROTO_MP\n");
740 add = link_QueueLen(&dl->physical->link);
742 /* this link has got stuff already queued. Let it continue */
749 m = link_Dequeue(&mp->link);
756 if (dl->state == DATALINK_OPEN) {
757 /* Write at most his_mru bytes to the physical link */
758 if (len <= dl->physical->link.lcp.his_mru) {
761 m_settype(mo, MB_MPOUT);
763 /* It's > his_mru, chop the packet (`m') into bits */
764 mo = m_get(dl->physical->link.lcp.his_mru, MB_MPOUT);
766 m = mbuf_Read(m, MBUF_CTOP(mo), mo->m_len);
768 mp_Output(mp, bundle, &dl->physical->link, mo, begin, end);
784 mp->out.link = thislink; /* Start here next time */
790 mp_SetDatalinkBandwidth(struct cmdargs const *arg)
794 if (arg->argc != arg->argn+1)
797 val = atoi(arg->argv[arg->argn]);
799 log_Printf(LogWARN, "The link bandwidth must be greater than zero\n");
802 arg->cx->mp.bandwidth = val;
804 if (arg->cx->state == DATALINK_OPEN)
805 bundle_CalculateBandwidth(arg->bundle);
811 mp_ShowStatus(struct cmdargs const *arg)
813 struct mp *mp = &arg->bundle->ncp.mp;
815 prompt_Printf(arg->prompt, "Multilink is %sactive\n", mp->active ? "" : "in");
821 prompt_Printf(arg->prompt, "Socket: %s\n",
822 mp->server.socket.sun_path);
823 for (m = mp->inbufs; m; m = m->m_nextpkt) {
827 prompt_Printf(arg->prompt, "Pending frags: %d", bufs);
830 unsigned long first, last;
832 first = mp_ReadHeader(mp, mp->inbufs, &mh) ? mh.seq : 0;
833 last = mp_ReadHeader(mp, lm, &mh) ? mh.seq : 0;
834 prompt_Printf(arg->prompt, " (Have %lu - %lu, want %lu, lowest %lu)\n",
835 first, last, (unsigned long)mp->seq.next_in,
836 (unsigned long)mp->seq.min_in);
837 prompt_Printf(arg->prompt, " First has %sbegin bit and "
838 "%send bit", mh.begin ? "" : "no ", mh.end ? "" : "no ");
840 prompt_Printf(arg->prompt, "\n");
843 prompt_Printf(arg->prompt, "\nMy Side:\n");
845 prompt_Printf(arg->prompt, " Output SEQ: %u\n", mp->out.seq);
846 prompt_Printf(arg->prompt, " MRRU: %u\n", mp->local_mrru);
847 prompt_Printf(arg->prompt, " Short Seq: %s\n",
848 mp->local_is12bit ? "on" : "off");
850 prompt_Printf(arg->prompt, " Discriminator: %s\n",
851 mp_Enddisc(mp->cfg.enddisc.class, mp->cfg.enddisc.address,
852 mp->cfg.enddisc.len));
854 prompt_Printf(arg->prompt, "\nHis Side:\n");
856 prompt_Printf(arg->prompt, " Auth Name: %s\n", mp->peer.authname);
857 prompt_Printf(arg->prompt, " Input SEQ: %u\n", mp->seq.next_in);
858 prompt_Printf(arg->prompt, " MRRU: %u\n", mp->peer_mrru);
859 prompt_Printf(arg->prompt, " Short Seq: %s\n",
860 mp->peer_is12bit ? "on" : "off");
862 prompt_Printf(arg->prompt, " Discriminator: %s\n",
863 mp_Enddisc(mp->peer.enddisc.class, mp->peer.enddisc.address,
864 mp->peer.enddisc.len));
866 prompt_Printf(arg->prompt, "\nDefaults:\n");
868 prompt_Printf(arg->prompt, " MRRU: ");
870 prompt_Printf(arg->prompt, "%d (multilink enabled)\n", mp->cfg.mrru);
872 prompt_Printf(arg->prompt, "disabled\n");
873 prompt_Printf(arg->prompt, " Short Seq: %s\n",
874 command_ShowNegval(mp->cfg.shortseq));
875 prompt_Printf(arg->prompt, " Discriminator: %s\n",
876 command_ShowNegval(mp->cfg.negenddisc));
877 prompt_Printf(arg->prompt, " AutoLoad: min %d%%, max %d%%,"
878 " period %d secs\n", mp->cfg.autoload.min,
879 mp->cfg.autoload.max, mp->cfg.autoload.period);
885 mp_Enddisc(u_char c, const char *address, int len)
887 static char result[100]; /* Used immediately after it's returned */
892 sprintf(result, "Null Class");
896 snprintf(result, sizeof result, "Local Addr: %.*s", len, address);
901 snprintf(result, sizeof result, "IP %s",
902 inet_ntoa(*(const struct in_addr *)address));
904 sprintf(result, "IP[%d] ???", len);
909 const u_char *m = (const u_char *)address;
910 snprintf(result, sizeof result, "MAC %02x:%02x:%02x:%02x:%02x:%02x",
911 m[0], m[1], m[2], m[3], m[4], m[5]);
913 sprintf(result, "MAC[%d] ???", len);
917 sprintf(result, "Magic: 0x");
918 header = strlen(result);
919 if (len > sizeof result - header - 1)
920 len = sizeof result - header - 1;
921 for (f = 0; f < len; f++)
922 sprintf(result + header + 2 * f, "%02x", address[f]);
926 snprintf(result, sizeof result, "PSN: %.*s", len, address);
930 sprintf(result, "%d: ", (int)c);
931 header = strlen(result);
932 if (len > sizeof result - header - 1)
933 len = sizeof result - header - 1;
934 for (f = 0; f < len; f++)
935 sprintf(result + header + 2 * f, "%02x", address[f]);
942 mp_SetEnddisc(struct cmdargs const *arg)
944 struct mp *mp = &arg->bundle->ncp.mp;
947 switch (bundle_Phase(arg->bundle)) {
950 case PHASE_ESTABLISH:
951 /* Make sure none of our links are DATALINK_LCP or greater */
952 if (bundle_HighestState(arg->bundle) >= DATALINK_LCP) {
953 log_Printf(LogWARN, "enddisc: Only changable before"
954 " LCP negotiations\n");
959 log_Printf(LogWARN, "enddisc: Only changable at phase DEAD/ESTABLISH\n");
963 if (arg->argc == arg->argn) {
964 mp->cfg.enddisc.class = 0;
965 *mp->cfg.enddisc.address = '\0';
966 mp->cfg.enddisc.len = 0;
967 } else if (arg->argc > arg->argn) {
968 if (!strcasecmp(arg->argv[arg->argn], "label")) {
969 mp->cfg.enddisc.class = ENDDISC_LOCAL;
970 strcpy(mp->cfg.enddisc.address, arg->bundle->cfg.label);
971 mp->cfg.enddisc.len = strlen(mp->cfg.enddisc.address);
972 } else if (!strcasecmp(arg->argv[arg->argn], "ip")) {
973 if (arg->bundle->ncp.ipcp.my_ip.s_addr == INADDR_ANY)
974 addr = arg->bundle->ncp.ipcp.cfg.my_range.ipaddr;
976 addr = arg->bundle->ncp.ipcp.my_ip;
977 memcpy(mp->cfg.enddisc.address, &addr.s_addr, sizeof addr.s_addr);
978 mp->cfg.enddisc.class = ENDDISC_IP;
979 mp->cfg.enddisc.len = sizeof arg->bundle->ncp.ipcp.my_ip.s_addr;
980 } else if (!strcasecmp(arg->argv[arg->argn], "mac")) {
981 struct sockaddr_dl hwaddr;
984 if (arg->bundle->ncp.ipcp.my_ip.s_addr == INADDR_ANY)
985 addr = arg->bundle->ncp.ipcp.cfg.my_range.ipaddr;
987 addr = arg->bundle->ncp.ipcp.my_ip;
989 s = ID0socket(AF_INET, SOCK_DGRAM, 0);
991 log_Printf(LogERROR, "set enddisc: socket(): %s\n", strerror(errno));
994 if (get_ether_addr(s, addr, &hwaddr)) {
995 mp->cfg.enddisc.class = ENDDISC_MAC;
996 memcpy(mp->cfg.enddisc.address, hwaddr.sdl_data + hwaddr.sdl_nlen,
998 mp->cfg.enddisc.len = hwaddr.sdl_alen;
1000 log_Printf(LogWARN, "set enddisc: Can't locate MAC address for %s\n",
1006 } else if (!strcasecmp(arg->argv[arg->argn], "magic")) {
1010 for (f = 0; f < 20; f += sizeof(long))
1011 *(long *)(mp->cfg.enddisc.address + f) = random();
1012 mp->cfg.enddisc.class = ENDDISC_MAGIC;
1013 mp->cfg.enddisc.len = 20;
1014 } else if (!strcasecmp(arg->argv[arg->argn], "psn")) {
1015 if (arg->argc > arg->argn+1) {
1016 mp->cfg.enddisc.class = ENDDISC_PSN;
1017 strcpy(mp->cfg.enddisc.address, arg->argv[arg->argn+1]);
1018 mp->cfg.enddisc.len = strlen(mp->cfg.enddisc.address);
1020 log_Printf(LogWARN, "PSN endpoint requires additional data\n");
1024 log_Printf(LogWARN, "%s: Unrecognised endpoint type\n",
1025 arg->argv[arg->argn]);
1034 mpserver_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e,
1037 struct mpserver *s = descriptor2mpserver(d);
1041 if (s->send.dl != NULL) {
1042 /* We've connect()ed */
1043 if (!link_QueueLen(&s->send.dl->physical->link) &&
1044 !s->send.dl->physical->out) {
1045 /* Only send if we've transmitted all our data (i.e. the ConfigAck) */
1046 result -= datalink_RemoveFromSet(s->send.dl, r, w, e);
1047 bundle_SendDatalink(s->send.dl, s->fd, &s->socket);
1051 /* Never read from a datalink that's on death row ! */
1052 result -= datalink_RemoveFromSet(s->send.dl, r, NULL, NULL);
1053 } else if (r && s->fd >= 0) {
1057 log_Printf(LogTIMER, "mp: fdset(r) %d\n", s->fd);
1064 mpserver_IsSet(struct fdescriptor *d, const fd_set *fdset)
1066 struct mpserver *s = descriptor2mpserver(d);
1067 return s->fd >= 0 && FD_ISSET(s->fd, fdset);
1071 mpserver_Read(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset)
1073 struct mpserver *s = descriptor2mpserver(d);
1075 bundle_ReceiveDatalink(bundle, s->fd);
1079 mpserver_Write(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset)
1081 /* We never want to write here ! */
1082 log_Printf(LogALERT, "mpserver_Write: Internal error: Bad call !\n");
1087 mpserver_Init(struct mpserver *s)
1089 s->desc.type = MPSERVER_DESCRIPTOR;
1090 s->desc.UpdateSet = mpserver_UpdateSet;
1091 s->desc.IsSet = mpserver_IsSet;
1092 s->desc.Read = mpserver_Read;
1093 s->desc.Write = mpserver_Write;
1096 memset(&s->socket, '\0', sizeof s->socket);
1100 mpserver_Open(struct mpserver *s, struct peerid *peer)
1106 log_Printf(LogALERT, "Internal error ! mpserver already open\n");
1110 l = snprintf(s->socket.sun_path, sizeof s->socket.sun_path, "%sppp-%s-%02x-",
1111 _PATH_VARRUN, peer->authname, peer->enddisc.class);
1113 for (f = 0; f < peer->enddisc.len && l < sizeof s->socket.sun_path - 2; f++) {
1114 snprintf(s->socket.sun_path + l, sizeof s->socket.sun_path - l,
1115 "%02x", *(u_char *)(peer->enddisc.address+f));
1119 s->socket.sun_family = AF_LOCAL;
1120 s->socket.sun_len = sizeof s->socket;
1121 s->fd = ID0socket(PF_LOCAL, SOCK_DGRAM, 0);
1123 log_Printf(LogERROR, "mpserver: socket(): %s\n", strerror(errno));
1124 return MPSERVER_FAILED;
1127 setsockopt(s->fd, SOL_SOCKET, SO_REUSEADDR, (struct sockaddr *)&s->socket,
1132 * Try to bind the socket. If we succeed we play server, if we fail
1133 * we connect() and hand the link off.
1136 if (ID0bind_un(s->fd, &s->socket) < 0) {
1137 if (errno != EADDRINUSE) {
1138 log_Printf(LogPHASE, "mpserver: can't create bundle socket %s (%s)\n",
1139 s->socket.sun_path, strerror(errno));
1143 return MPSERVER_FAILED;
1146 /* So we're the sender */
1148 if (ID0connect_un(s->fd, &s->socket) < 0) {
1149 log_Printf(LogPHASE, "mpserver: can't connect to bundle socket %s (%s)\n",
1150 s->socket.sun_path, strerror(errno));
1151 if (errno == ECONNREFUSED)
1152 log_Printf(LogPHASE, " The previous server died badly !\n");
1155 return MPSERVER_FAILED;
1158 /* Donate our link to the other guy */
1159 return MPSERVER_CONNECTED;
1162 return MPSERVER_LISTENING;
1166 mpserver_Close(struct mpserver *s)
1168 if (s->send.dl != NULL) {
1169 bundle_SendDatalink(s->send.dl, s->fd, &s->socket);
1172 } else if (s->fd >= 0) {
1174 if (ID0unlink(s->socket.sun_path) == -1)
1175 log_Printf(LogERROR, "%s: Failed to remove: %s\n", s->socket.sun_path,
1177 memset(&s->socket, '\0', sizeof s->socket);
1183 mp_LinkLost(struct mp *mp, struct datalink *dl)
1185 if (mp->seq.min_in == dl->mp.seq)
1186 /* We've lost the link that's holding everything up ! */
1187 mp_Assemble(mp, NULL, NULL);
1191 mp_DeleteQueue(struct mp *mp)
1193 link_DeleteQueue(&mp->link);