2 * Copyright (c) 2001 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
26 * $FreeBSD: src/usr.sbin/ppp/ncp.c,v 1.5.2.1 2002/09/01 02:12:29 brian Exp $
29 #include <sys/param.h>
30 #include <netinet/in_systm.h>
31 #include <netinet/in.h>
32 #include <netinet/ip.h>
33 #include <sys/socket.h>
34 #include <net/route.h>
52 #include "throughput.h"
53 #include "slcompress.h"
60 #include "descriptor.h"
82 static u_short default_urgent_tcp_ports[] = {
92 static u_short default_urgent_udp_ports[] = { };
94 #define NDEFTCPPORTS \
95 (sizeof default_urgent_tcp_ports / sizeof default_urgent_tcp_ports[0])
96 #define NDEFUDPPORTS \
97 (sizeof default_urgent_udp_ports / sizeof default_urgent_udp_ports[0])
100 ncp_Init(struct ncp *ncp, struct bundle *bundle)
105 ncp->cfg.urgent.tcp.nports = ncp->cfg.urgent.tcp.maxports = NDEFTCPPORTS;
106 ncp->cfg.urgent.tcp.port = (u_short *)malloc(NDEFTCPPORTS * sizeof(u_short));
107 memcpy(ncp->cfg.urgent.tcp.port, default_urgent_tcp_ports,
108 NDEFTCPPORTS * sizeof(u_short));
109 ncp->cfg.urgent.tos = 1;
111 ncp->cfg.urgent.udp.nports = ncp->cfg.urgent.udp.maxports = NDEFUDPPORTS;
112 ncp->cfg.urgent.udp.port = (u_short *)malloc(NDEFUDPPORTS * sizeof(u_short));
113 memcpy(ncp->cfg.urgent.udp.port, default_urgent_udp_ports,
114 NDEFUDPPORTS * sizeof(u_short));
117 mp_Init(&ncp->mp, bundle);
119 /* Send over the first physical link by default */
120 ipcp_Init(&ncp->ipcp, bundle, &bundle->links->physical->link,
123 ipv6cp_Init(&ncp->ipv6cp, bundle, &bundle->links->physical->link,
129 ncp_Destroy(struct ncp *ncp)
131 ipcp_Destroy(&ncp->ipcp);
133 ipv6cp_Destroy(&ncp->ipv6cp);
136 if (ncp->cfg.urgent.tcp.maxports) {
137 ncp->cfg.urgent.tcp.nports = ncp->cfg.urgent.tcp.maxports = 0;
138 free(ncp->cfg.urgent.tcp.port);
139 ncp->cfg.urgent.tcp.port = NULL;
141 if (ncp->cfg.urgent.udp.maxports) {
142 ncp->cfg.urgent.udp.nports = ncp->cfg.urgent.udp.maxports = 0;
143 free(ncp->cfg.urgent.udp.port);
144 ncp->cfg.urgent.udp.port = NULL;
149 ncp_fsmStart(struct ncp *ncp, struct bundle *bundle)
154 if (Enabled(bundle, OPT_IPCP)) {
156 fsm_Up(&ncp->ipcp.fsm);
157 fsm_Open(&ncp->ipcp.fsm);
162 if (Enabled(bundle, OPT_IPV6CP)) {
163 fsm_Up(&ncp->ipv6cp.fsm);
164 fsm_Open(&ncp->ipv6cp.fsm);
173 ncp_IfaceAddrAdded(struct ncp *ncp, const struct iface_addr *addr)
175 switch (ncprange_family(&addr->ifa)) {
177 ipcp_IfaceAddrAdded(&ncp->ipcp, addr);
181 ipv6cp_IfaceAddrAdded(&ncp->ipv6cp, addr);
188 ncp_IfaceAddrDeleted(struct ncp *ncp, const struct iface_addr *addr)
190 if (ncprange_family(&addr->ifa) == AF_INET)
191 ipcp_IfaceAddrDeleted(&ncp->ipcp, addr);
195 ncp_SetLink(struct ncp *ncp, struct link *l)
197 ipcp_SetLink(&ncp->ipcp, l);
199 ipv6cp_SetLink(&ncp->ipv6cp, l);
204 * Enqueue a packet of the given address family. Nothing will make it
205 * down to the physical link level 'till ncp_FillPhysicalQueues() is used.
208 ncp_Enqueue(struct ncp *ncp, int af, int pri, char *ptr, int count)
211 struct ipv6cp *ipv6cp = &ncp->ipv6cp;
213 struct ipcp *ipcp = &ncp->ipcp;
217 * We allocate an extra 6 bytes, four at the front and two at the end.
218 * This is an optimisation so that we need to do less work in
219 * m_prepend() in acf_LayerPush() and proto_LayerPush() and
220 * appending in hdlc_LayerPush().
225 if (pri < 0 || pri >= IPCP_QUEUES(ipcp)) {
226 log_Printf(LogERROR, "Can't store in ip queue %d\n", pri);
230 bp = m_get(count + 6, MB_IPOUT);
233 memcpy(MBUF_CTOP(bp), ptr, count);
234 m_enqueue(ipcp->Queue + pri, bp);
239 if (pri < 0 || pri >= IPV6CP_QUEUES(ipcp)) {
240 log_Printf(LogERROR, "Can't store in ipv6 queue %d\n", pri);
244 bp = m_get(count + 6, MB_IPOUT);
247 memcpy(MBUF_CTOP(bp), ptr, count);
248 m_enqueue(ipv6cp->Queue + pri, bp);
253 log_Printf(LogERROR, "Can't enqueue protocol family %d\n", af);
258 * How many packets are queued to go out ?
261 ncp_QueueLen(struct ncp *ncp)
265 result = ipcp_QueueLen(&ncp->ipcp);
267 result += ipv6cp_QueueLen(&ncp->ipv6cp);
269 result += mp_QueueLen(&ncp->mp); /* Usually empty */
275 * Ditch all queued packets. This is usually done after our choked timer
276 * has fired - which happens because we couldn't send any traffic over
277 * any links for some time.
280 ncp_DeleteQueues(struct ncp *ncp)
283 struct ipv6cp *ipv6cp = &ncp->ipv6cp;
285 struct ipcp *ipcp = &ncp->ipcp;
286 struct mp *mp = &ncp->mp;
289 for (q = ipcp->Queue; q < ipcp->Queue + IPCP_QUEUES(ipcp); q++)
291 m_freem(m_dequeue(q));
294 for (q = ipv6cp->Queue; q < ipv6cp->Queue + IPV6CP_QUEUES(ipv6cp); q++)
296 m_freem(m_dequeue(q));
299 link_DeleteQueue(&mp->link); /* Usually empty anyway */
303 * Arrange that each of our links has at least one packet. We keep the
304 * number of packets queued at the link level to a minimum so that the
305 * loss of a link in multi-link mode results in the minimum number of
309 ncp_FillPhysicalQueues(struct ncp *ncp, struct bundle *bundle)
313 if (bundle->ncp.mp.active)
314 total = mp_FillPhysicalQueues(bundle);
319 for (total = 0, dl = bundle->links; dl; dl = dl->next)
320 if (dl->state == DATALINK_OPEN) {
321 add = link_QueueLen(&dl->physical->link);
322 if (add == 0 && dl->physical->out == NULL)
323 add = ncp_PushPacket(ncp, &ncp->afq, &dl->physical->link);
328 return total + ncp_QueueLen(&bundle->ncp);
332 * Push a packet into the given link. ``af'' is used as a persistent record
333 * of what is to be pushed next, coming either from mp->out or ncp->afq.
336 ncp_PushPacket(struct ncp *ncp, int *af, struct link *l)
338 struct bundle *bundle = l->lcp.fsm.bundle;
342 if (*af == AF_INET) {
343 if ((res = ipcp_PushPacket(&bundle->ncp.ipcp, l)))
346 res = ipv6cp_PushPacket(&bundle->ncp.ipv6cp, l);
348 if ((res = ipv6cp_PushPacket(&bundle->ncp.ipv6cp, l)))
351 res = ipcp_PushPacket(&bundle->ncp.ipcp, l);
354 res = ipcp_PushPacket(&bundle->ncp.ipcp, l);
361 ncp_IsUrgentPort(struct port_range *range, u_short src, u_short dst)
365 for (f = 0; f < range->nports; f++)
366 if (range->port[f] == src || range->port[f] == dst)
373 ncp_AddUrgentPort(struct port_range *range, u_short port)
378 if (range->nports == range->maxports) {
379 range->maxports += 10;
380 newport = (u_short *)realloc(range->port,
381 range->maxports * sizeof(u_short));
382 if (newport == NULL) {
383 log_Printf(LogERROR, "ncp_AddUrgentPort: realloc: %s\n",
385 range->maxports -= 10;
388 range->port = newport;
391 for (p = 0; p < range->nports; p++)
392 if (range->port[p] == port) {
393 log_Printf(LogWARN, "%u: Port already set to urgent\n", port);
395 } else if (range->port[p] > port) {
396 memmove(range->port + p + 1, range->port + p,
397 (range->nports - p) * sizeof(u_short));
398 range->port[p] = port;
403 if (p == range->nports)
404 range->port[range->nports++] = port;
408 ncp_RemoveUrgentPort(struct port_range *range, u_short port)
412 for (p = 0; p < range->nports; p++)
413 if (range->port[p] == port) {
414 if (p != range->nports - 1)
415 memmove(range->port + p, range->port + p + 1,
416 (range->nports - p - 1) * sizeof(u_short));
421 if (p == range->nports)
422 log_Printf(LogWARN, "%u: Port not set to urgent\n", port);
426 ncp_ClearUrgentPorts(struct port_range *range)
432 ncp_Show(struct cmdargs const *arg)
434 struct ncp *ncp = &arg->bundle->ncp;
438 prompt_Printf(arg->prompt, "Next queued AF: %s\n",
439 ncp->afq == AF_INET6 ? "inet6" : "inet");
443 prompt_Printf(arg->prompt, "\n");
444 route_ShowSticky(arg->prompt, ncp->route, "Sticky routes", 1);
447 prompt_Printf(arg->prompt, "\nDefaults:\n");
448 prompt_Printf(arg->prompt, " sendpipe: ");
449 if (ncp->cfg.sendpipe > 0)
450 prompt_Printf(arg->prompt, "%-20ld\n", ncp->cfg.sendpipe);
452 prompt_Printf(arg->prompt, "unspecified\n");
453 prompt_Printf(arg->prompt, " recvpipe: ");
454 if (ncp->cfg.recvpipe > 0)
455 prompt_Printf(arg->prompt, "%ld\n", ncp->cfg.recvpipe);
457 prompt_Printf(arg->prompt, "unspecified\n");
459 prompt_Printf(arg->prompt, "\n Urgent ports\n");
460 prompt_Printf(arg->prompt, " TCP: ");
461 if (ncp->cfg.urgent.tcp.nports == 0)
462 prompt_Printf(arg->prompt, "none");
464 for (p = 0; p < ncp->cfg.urgent.tcp.nports; p++) {
466 prompt_Printf(arg->prompt, ", ");
467 prompt_Printf(arg->prompt, "%u", ncp->cfg.urgent.tcp.port[p]);
470 prompt_Printf(arg->prompt, "\n UDP: ");
471 if (ncp->cfg.urgent.udp.nports == 0)
472 prompt_Printf(arg->prompt, "none");
474 for (p = 0; p < ncp->cfg.urgent.udp.nports; p++) {
476 prompt_Printf(arg->prompt, ", ");
477 prompt_Printf(arg->prompt, "%u", ncp->cfg.urgent.udp.port[p]);
479 prompt_Printf(arg->prompt, "\n TOS: %s\n\n",
480 ncp->cfg.urgent.tos ? "yes" : "no");
486 ncp_LayersOpen(struct ncp *ncp)
490 n = !!(ncp->ipcp.fsm.state == ST_OPENED);
492 n += !!(ncp->ipv6cp.fsm.state == ST_OPENED);
499 ncp_LayersUnfinished(struct ncp *ncp)
503 if (ncp->ipcp.fsm.state > ST_CLOSED ||
504 ncp->ipcp.fsm.state == ST_STARTING)
508 if (ncp->ipv6cp.fsm.state > ST_CLOSED ||
509 ncp->ipv6cp.fsm.state == ST_STARTING)
517 ncp_Close(struct ncp *ncp)
519 if (ncp->ipcp.fsm.state > ST_CLOSED ||
520 ncp->ipcp.fsm.state == ST_STARTING)
521 fsm_Close(&ncp->ipcp.fsm);
524 if (ncp->ipv6cp.fsm.state > ST_CLOSED ||
525 ncp->ipv6cp.fsm.state == ST_STARTING)
526 fsm_Close(&ncp->ipv6cp.fsm);
531 ncp2initial(struct ncp *ncp)
533 fsm2initial(&ncp->ipcp.fsm);
535 fsm2initial(&ncp->ipv6cp.fsm);