Annotation of embedaddon/mpd/src/ngfunc.c, revision 1.1.1.1
1.1 misho 1:
2: /*
3: * ngfunc.c
4: *
5: * Written by Archie Cobbs <archie@freebsd.org>
6: * Copyright (c) 1995-1999 Whistle Communications, Inc. All rights reserved.
7: * See ``COPYRIGHT.whistle''
8: *
9: * TCP MSSFIX contributed by Sergey Korolew <dsATbittu.org.ru>
10: *
11: * Routines for doing netgraph stuff
12: *
13: */
14:
15: #include "defs.h"
16: #include "ppp.h"
17: #include "bund.h"
18: #include "ngfunc.h"
19: #include "input.h"
20: #include "ccp.h"
21: #include "netgraph.h"
22: #include "command.h"
23: #include "util.h"
24:
25: #ifdef USE_NG_BPF
26: #include <net/bpf.h>
27: #endif
28: #include <arpa/inet.h>
29:
30: #include <netgraph/ng_message.h>
31:
32: #include <netgraph/ng_socket.h>
33: #include <netgraph/ng_ksocket.h>
34: #include <netgraph/ng_iface.h>
35: #ifdef USE_NG_VJC
36: #include <netgraph/ng_vjc.h>
37: #endif
38: #ifdef USE_NG_BPF
39: #include <netgraph/ng_bpf.h>
40: #endif
41: #include <netgraph/ng_tee.h>
42: #ifdef USE_NG_TCPMSS
43: #include <netgraph/ng_tcpmss.h>
44: #endif
45: #ifdef USE_NG_NETFLOW
46: #include <netgraph/netflow/ng_netflow.h>
47: #if NGM_NETFLOW_COOKIE >= 1309868867
48: #include <netgraph/netflow/netflow.h>
49: #include <netgraph/netflow/netflow_v9.h>
50: #endif
51: #endif
52: #ifdef USE_NG_PRED1
53: #include <netgraph/ng_pred1.h>
54: #endif
55:
56: #include <netinet/ip_icmp.h>
57: #include <netinet/tcp.h>
58:
59: /*
60: * DEFINITIONS
61: */
62:
63: #define TEMPHOOK "temphook"
64: #define MAX_IFACE_CREATE 128
65:
66: /* Set menu options */
67: enum {
68: SET_PEER,
69: SET_SELF,
70: SET_TIMEOUTS,
71: #if NGM_NETFLOW_COOKIE >= 1309868867
72: SET_TEMPLATE,
73: SET_MTU,
74: SET_VERSION,
75: #endif
76: SET_NODE,
77: SET_HOOK
78: };
79:
80: /*
81: * INTERNAL FUNCTIONS
82: */
83:
84: #ifdef USE_NG_NETFLOW
85: static int NetflowSetCommand(Context ctx, int ac, char *av[], void *arg);
86: #endif
87:
88: /*
89: * GLOBAL VARIABLES
90: */
91:
92: #ifdef USE_NG_NETFLOW
93: const struct cmdtab NetflowSetCmds[] = {
94: { "peer {ip} {port}", "Set export destination" ,
95: NetflowSetCommand, NULL, 2, (void *) SET_PEER },
96: { "self {ip} [{port}]", "Set export source" ,
97: NetflowSetCommand, NULL, 2, (void *) SET_SELF },
98: { "timeouts {inactive} {active}", "Set NetFlow timeouts" ,
99: NetflowSetCommand, NULL, 2, (void *) SET_TIMEOUTS },
100: #if NGM_NETFLOW_COOKIE >= 1309868867
101: { "template {time} {packets}", "Set NetFlow v9 template" ,
102: NetflowSetCommand, NULL, 2, (void *) SET_TEMPLATE },
103: { "mtu {mtu}", "Set NetFlow v9 MTU" ,
104: NetflowSetCommand, NULL, 2, (void *) SET_MTU },
105: { "version {version}", "Set version to export" ,
106: NetflowSetCommand, NULL, 2, (void *) SET_VERSION },
107: #endif
108: { "node {name}", "Set node name to use" ,
109: NetflowSetCommand, NULL, 2, (void *) SET_NODE },
110: { "hook {number}", "Set initial hook number" ,
111: NetflowSetCommand, NULL, 2, (void *) SET_HOOK },
112: { NULL },
113: };
114: #endif
115:
116: /*
117: * INTERNAL VARIABLES
118: */
119:
120: #ifdef USE_NG_TCPMSS
121: u_char gTcpMSSNode = FALSE;
122: #endif
123: #ifdef USE_NG_NETFLOW
124: u_char gNetflowNode = FALSE;
125: u_char gNetflowNodeShutdown = TRUE;
126: char gNetflowNodeName[64] = "mpd-nf";
127: ng_ID_t gNetflowNodeID = 0;
128: u_int gNetflowIface = 0;
129: struct sockaddr_storage gNetflowExport;
130: struct sockaddr_storage gNetflowSource;
131: uint32_t gNetflowInactive = 0;
132: uint32_t gNetflowActive = 0;
133: #if NGM_NETFLOW_COOKIE >= 1309868867
134: uint16_t gNetflowTime = 0;
135: uint16_t gNetflowPackets = 0;
136: uint16_t gNetflowMTU = 0;
137: u_int gNetflowVer = 5;
138: #endif
139: #endif
140:
141: static int gNgStatSock=0;
142:
143:
144: #ifdef USE_NG_NETFLOW
145: int
146: NgFuncInitGlobalNetflow(void)
147: {
148: char path[NG_PATHSIZ];
149: struct ngm_mkpeer mp;
150: struct ngm_rmhook rm;
151: struct ngm_name nm;
152: int csock;
153:
154: /* Create a netgraph socket node */
155: if (NgMkSockNode(NULL, &csock, NULL) < 0) {
156: Perror("NETFLOW: Can't create %s node", NG_SOCKET_NODE_TYPE);
157: return (-1);
158: }
159:
160: /* If node exist just get it's ID. */
161: if (gNetflowNode) {
162: snprintf(path, sizeof(path), "%s:", gNetflowNodeName);
163: gNetflowNodeID = NgGetNodeID(csock, path);
164: close(csock);
165: return (0);
166: }
167:
168: snprintf(gNetflowNodeName, sizeof(gNetflowNodeName), "mpd%d-nf", gPid);
169:
170: /* Create a global netflow node. */
171: strcpy(mp.type, NG_NETFLOW_NODE_TYPE);
172: strcpy(mp.ourhook, TEMPHOOK);
173: strcpy(mp.peerhook, NG_NETFLOW_HOOK_DATA "0");
174: if (NgSendMsg(csock, ".:",
175: NGM_GENERIC_COOKIE, NGM_MKPEER, &mp, sizeof(mp)) < 0) {
176: Perror("NETFLOW: Can't create %s node at \"%s\"->\"%s\"",
177: mp.type, ".:", mp.ourhook);
178: goto fail;
179: }
180:
181: /* Get new node ID. */
182: gNetflowNodeID = NgGetNodeID(csock, TEMPHOOK);
183:
184: /* Set the new node's name. */
185: strcpy(nm.name, gNetflowNodeName);
186: if (NgSendMsg(csock, TEMPHOOK,
187: NGM_GENERIC_COOKIE, NGM_NAME, &nm, sizeof(nm)) < 0) {
188: Perror("NETFLOW: Can't name %s node", NG_NETFLOW_NODE_TYPE);
189: goto fail;
190: }
191:
192: /* Connect ng_ksocket(4) node for export. */
193: strcpy(mp.type, NG_KSOCKET_NODE_TYPE);
194: #if NGM_NETFLOW_COOKIE >= 1309868867
195: if (gNetflowVer == 5) {
196: #endif
197: strcpy(mp.ourhook, NG_NETFLOW_HOOK_EXPORT);
198: #if NGM_NETFLOW_COOKIE >= 1309868867
199: } else {
200: strcpy(mp.ourhook, NG_NETFLOW_HOOK_EXPORT9);
201: }
202: #endif
203: if (gNetflowExport.ss_family==AF_INET6) {
204: snprintf(mp.peerhook, sizeof(mp.peerhook), "%d/%d/%d", PF_INET6, SOCK_DGRAM, IPPROTO_UDP);
205: } else {
206: snprintf(mp.peerhook, sizeof(mp.peerhook), "inet/dgram/udp");
207: }
208: snprintf(path, sizeof(path), "[%x]:", gNetflowNodeID);
209: if (NgSendMsg(csock, path,
210: NGM_GENERIC_COOKIE, NGM_MKPEER, &mp, sizeof(mp)) < 0) {
211: Perror("NETFLOW: Can't create %s node at \"%s\"->\"%s\"",
212: mp.type, path, mp.ourhook);
213: goto fail;
214: }
215:
216: /* Configure timeouts for ng_netflow(4). */
217: if (gNetflowInactive != 0 && gNetflowActive != 0) {
218: struct ng_netflow_settimeouts nf_settime;
219:
220: nf_settime.inactive_timeout = gNetflowInactive;
221: nf_settime.active_timeout = gNetflowActive;
222:
223: if (NgSendMsg(csock, path, NGM_NETFLOW_COOKIE,
224: NGM_NETFLOW_SETTIMEOUTS, &nf_settime, sizeof(nf_settime)) < 0) {
225: Perror("NETFLOW: Can't set timeouts on netflow %s node",
226: NG_NETFLOW_NODE_TYPE);
227: goto fail2;
228: }
229: }
230:
231: #if NGM_NETFLOW_COOKIE >= 1309868867
232: if (gNetflowTime != 0 && gNetflowPackets != 0) {
233: struct ng_netflow_settemplate nf_settempl;
234:
235: nf_settempl.time = gNetflowTime;
236: nf_settempl.packets = gNetflowPackets;
237: if (NgSendMsg(csock, path, NGM_NETFLOW_COOKIE,
238: NGM_NETFLOW_SETTEMPLATE, &nf_settempl, sizeof(nf_settempl)) < 0) {
239: Perror("NETFLOW: Can't set NetFlow v9 template on netflow %s node",
240: NG_NETFLOW_NODE_TYPE);
241: goto fail2;
242: }
243: }
244:
245: if (gNetflowMTU != 0) {
246: struct ng_netflow_setmtu nf_setmtu;
247:
248: nf_setmtu.mtu = gNetflowMTU;
249: if (NgSendMsg(csock, path, NGM_NETFLOW_COOKIE,
250: NGM_NETFLOW_SETMTU, &nf_setmtu, sizeof(nf_setmtu)) < 0) {
251: Perror("NETFLOW: Can't set NetFlow v9 MTU on netflow %s node",
252: NG_NETFLOW_NODE_TYPE);
253: goto fail2;
254: }
255: }
256: #endif
257:
258: /* Configure export destination and source on ng_ksocket(4). */
259: #if NGM_NETFLOW_COOKIE >= 1309868867
260: if (gNetflowVer == 5) {
261: #endif
262: strlcat(path, NG_NETFLOW_HOOK_EXPORT, sizeof(path));
263: #if NGM_NETFLOW_COOKIE >= 1309868867
264: } else {
265: strlcat(path, NG_NETFLOW_HOOK_EXPORT9, sizeof(path));
266: }
267: #endif
268: if (gNetflowSource.ss_len != 0) {
269: if (NgSendMsg(csock, path, NGM_KSOCKET_COOKIE,
270: NGM_KSOCKET_BIND, &gNetflowSource, sizeof(gNetflowSource)) < 0) {
271: Perror("NETFLOW: Can't bind export %s node", NG_KSOCKET_NODE_TYPE);
272: goto fail2;
273: }
274: }
275: if (gNetflowExport.ss_len != 0) {
276: if (NgSendMsg(csock, path, NGM_KSOCKET_COOKIE,
277: NGM_KSOCKET_CONNECT, &gNetflowExport, sizeof(gNetflowExport)) < 0) {
278: Perror("NETFLOW: Can't connect export %s node", NG_KSOCKET_NODE_TYPE);
279: goto fail2;
280: }
281: }
282:
283: /* Set the new node's name. */
284: snprintf(nm.name, sizeof(nm.name), "mpd%d-nfso", gPid);
285: if (NgSendMsg(csock, path,
286: NGM_GENERIC_COOKIE, NGM_NAME, &nm, sizeof(nm)) < 0) {
287: Perror("NETFLOW: Can't name %s node", NG_KSOCKET_NODE_TYPE);
288: goto fail2;
289: }
290:
291: /* Disconnect temporary hook. */
292: memset(&rm, 0, sizeof(rm));
293: strncpy(rm.ourhook, TEMPHOOK, sizeof(rm.ourhook));
294: if (NgSendMsg(csock, ".:",
295: NGM_GENERIC_COOKIE, NGM_RMHOOK, &rm, sizeof(rm)) < 0) {
296: Perror("can't remove hook %s", TEMPHOOK);
297: goto fail2;
298: }
299: gNetflowNode = TRUE;
300: close(csock);
301:
302: return (0);
303: fail2:
304: snprintf(path, sizeof(path), "[%x]:", gNetflowNodeID);
305: NgFuncShutdownNode(csock, "netflow", path);
306: fail:
307: gNetflowNodeID = 0;
308: close(csock);
309: return (-1);
310: }
311: #endif
312:
313: /*
314: * NgFuncCreateIface()
315: *
316: * Create a new netgraph interface.
317: */
318:
319: int
320: NgFuncCreateIface(Bund b, char *buf, int max)
321: {
322: union {
323: u_char buf[sizeof(struct ng_mesg) + sizeof(struct nodeinfo)];
324: struct ng_mesg reply;
325: } u;
326: struct nodeinfo *const ni = (struct nodeinfo *)(void *)u.reply.data;
327: struct ngm_rmhook rm;
328: struct ngm_mkpeer mp;
329: int rtn = 0;
330:
331: /* Create iface node (as a temporary peer of the socket node) */
332: strcpy(mp.type, NG_IFACE_NODE_TYPE);
333: strcpy(mp.ourhook, TEMPHOOK);
334: strcpy(mp.peerhook, NG_IFACE_HOOK_INET);
335: if (NgSendMsg(gLinksCsock, ".:",
336: NGM_GENERIC_COOKIE, NGM_MKPEER, &mp, sizeof(mp)) < 0) {
337: Log(LG_ERR, ("[%s] can't create %s node at \"%s\"->\"%s\": %s %d",
338: b->name, NG_IFACE_NODE_TYPE, ".:", mp.ourhook, strerror(errno), gLinksCsock));
339: return(-1);
340: }
341:
342: /* Get the new node's name */
343: if (NgSendMsg(gLinksCsock, TEMPHOOK,
344: NGM_GENERIC_COOKIE, NGM_NODEINFO, NULL, 0) < 0) {
345: Perror("[%s] %s", b->name, "NGM_NODEINFO");
346: rtn = -1;
347: goto done;
348: }
349: if (NgRecvMsg(gLinksCsock, &u.reply, sizeof(u), NULL) < 0) {
350: Perror("[%s] reply from %s", b->name, NG_IFACE_NODE_TYPE);
351: rtn = -1;
352: goto done;
353: }
354: strlcpy(buf, ni->name, max);
355:
356: done:
357: /* Disconnect temporary hook */
358: strcpy(rm.ourhook, TEMPHOOK);
359: if (NgSendMsg(gLinksCsock, ".:",
360: NGM_GENERIC_COOKIE, NGM_RMHOOK, &rm, sizeof(rm)) < 0) {
361: Perror("[%s] can't remove hook %s", b->name, TEMPHOOK);
362: rtn = -1;
363: }
364:
365: /* Done */
366: return(rtn);
367: }
368:
369: /*
370: * NgFuncShutdownGlobal()
371: *
372: * Shutdown nodes, that are shared between bundles.
373: */
374:
375: void
376: NgFuncShutdownGlobal(void)
377: {
378: #ifdef USE_NG_NETFLOW
379: char path[NG_PATHSIZ];
380: int csock;
381:
382: if (gNetflowNode == FALSE || gNetflowNodeShutdown==FALSE)
383: return;
384:
385: /* Create a netgraph socket node */
386: if (NgMkSockNode(NULL, &csock, NULL) < 0) {
387: Perror("NgFuncShutdownGlobal: can't create %s node", NG_SOCKET_NODE_TYPE);
388: return;
389: }
390:
391: snprintf(path, sizeof(path), "[%x]:", gNetflowNodeID);
392: NgFuncShutdownNode(csock, "netflow", path);
393:
394: close(csock);
395: #endif
396: }
397:
398: /*
399: * NgFuncShutdownNode()
400: */
401:
402: int
403: NgFuncShutdownNode(int csock, const char *label, const char *path)
404: {
405: int rtn, retry = 10, delay = 1000;
406:
407: retry:
408: if ((rtn = NgSendMsg(csock, path,
409: NGM_GENERIC_COOKIE, NGM_SHUTDOWN, NULL, 0)) < 0) {
410: if (errno == ENOBUFS && retry > 0) {
411: Log(LG_ERR, ("[%s] shutdown \"%s\": %s, retrying...",
412: label, path, strerror(errno)));
413: usleep(delay);
414: retry--;
415: delay *= 2;
416: goto retry;
417: }
418: if (errno != ENOENT) {
419: Perror("[%s] can't shutdown \"%s\"", label, path);
420: }
421: }
422: return(rtn);
423: }
424:
425: /*
426: * NgFuncSetConfig()
427: */
428:
429: void
430: NgFuncSetConfig(Bund b)
431: {
432: char path[NG_PATHSIZ];
433: snprintf(path, sizeof(path), "[%x]:", b->nodeID);
434: if (NgSendMsg(gLinksCsock, path, NGM_PPP_COOKIE,
435: NGM_PPP_SET_CONFIG, &b->pppConfig, sizeof(b->pppConfig)) < 0) {
436: Perror("[%s] can't config %s", b->name, path);
437: DoExit(EX_ERRDEAD);
438: }
439: }
440:
441: /*
442: * NgFuncSendQuery()
443: */
444:
445: int
446: NgFuncSendQuery(const char *path, int cookie, int cmd, const void *args,
447: size_t arglen, struct ng_mesg *rbuf, size_t replen, char *raddr)
448: {
449:
450: if (!gNgStatSock) {
451: char name[NG_NODESIZ];
452:
453: /* Create a netgraph socket node */
454: snprintf(name, sizeof(name), "mpd%d-stats", gPid);
455: if (NgMkSockNode(name, &gNgStatSock, NULL) < 0) {
456: Perror("NgFuncSendQuery: can't create %s node", NG_SOCKET_NODE_TYPE);
457: return(-1);
458: }
459: (void) fcntl(gNgStatSock, F_SETFD, 1);
460: }
461:
462: /* Send message */
463: if (NgSendMsg(gNgStatSock, path, cookie, cmd, args, arglen) < 0)
464: return (-1);
465:
466: /* Read message */
467: if (NgRecvMsg(gNgStatSock, rbuf, replen, raddr) < 0) {
468: Perror("NgFuncSendQuery: can't read unexpected message");
469: return (-1);
470: }
471:
472: return (0);
473: }
474:
475: /*
476: * NgFuncConnect()
477: */
478:
479: int
480: NgFuncConnect(int csock, char *label, const char *path, const char *hook,
481: const char *path2, const char *hook2)
482: {
483: struct ngm_connect cn;
484:
485: strlcpy(cn.path, path2, sizeof(cn.path));
486: strlcpy(cn.ourhook, hook, sizeof(cn.ourhook));
487: strlcpy(cn.peerhook, hook2, sizeof(cn.peerhook));
488: if (NgSendMsg(csock, path,
489: NGM_GENERIC_COOKIE, NGM_CONNECT, &cn, sizeof(cn)) < 0) {
490: Perror("[%s] can't connect \"%s\"->\"%s\" and \"%s\"->\"%s\"",
491: label, path, hook, path2, hook2);
492: return(-1);
493: }
494: return(0);
495: }
496:
497: /*
498: * NgFuncDisconnect()
499: */
500:
501: int
502: NgFuncDisconnect(int csock, char *label, const char *path, const char *hook)
503: {
504: struct ngm_rmhook rm;
505: int retry = 10, delay = 1000;
506:
507: /* Disconnect hook */
508: memset(&rm, 0, sizeof(rm));
509: strlcpy(rm.ourhook, hook, sizeof(rm.ourhook));
510: retry:
511: if (NgSendMsg(csock, path,
512: NGM_GENERIC_COOKIE, NGM_RMHOOK, &rm, sizeof(rm)) < 0) {
513: if (errno == ENOBUFS && retry > 0) {
514: Log(LG_ERR, ("[%s] remove hook %s from node \"%s\": %s, retrying...",
515: label, hook, path, strerror(errno)));
516: usleep(delay);
517: retry--;
518: delay *= 2;
519: goto retry;
520: }
521: Perror("[%s] can't remove hook %s from node \"%s\"", label, hook, path);
522: return(-1);
523: }
524: return(0);
525: }
526:
527: /*
528: * NgFuncWritePppFrame()
529: *
530: * Consumes the mbuf.
531: */
532:
533: int
534: NgFuncWritePppFrame(Bund b, int linkNum, int proto, Mbuf bp)
535: {
536: u_int16_t temp;
537:
538: /* Prepend ppp node bypass header */
539: temp = htons(linkNum);
540: bp = mbcopyback(bp, -4, &temp, 2);
541: temp = htons(proto);
542: bp = mbcopyback(bp, 2, &temp, 2);
543:
544: /* Debugging */
545: LogDumpBp(LG_FRAME, bp,
546: "[%s] xmit bypass frame link=%d proto=0x%04x",
547: b->name, (int16_t)linkNum, proto);
548:
549: if ((linkNum == NG_PPP_BUNDLE_LINKNUM && b->n_up == 0) ||
550: (linkNum != NG_PPP_BUNDLE_LINKNUM &&
551: (b->links[linkNum] == NULL ||
552: b->links[linkNum]->state != PHYS_STATE_UP))) {
553: Log(LG_FRAME, ("[%s] Bundle: No links ready to send packet", b->name));
554: mbfree(bp);
555: return (-1);
556: }
557:
558: /* Write frame */
559: return NgFuncWriteFrame(gLinksDsock, b->hook, b->name, bp);
560: }
561:
562: /*
563: * NgFuncWritePppFrameLink()
564: *
565: * Consumes the mbuf.
566: */
567:
568: int
569: NgFuncWritePppFrameLink(Link l, int proto, Mbuf bp)
570: {
571: u_int16_t temp;
572:
573: if (l->joined_bund) {
574: return (NgFuncWritePppFrame(l->bund, l->bundleIndex, proto, bp));
575: }
576:
577: /* Prepend framing */
578: temp = htons(0xff03);
579: bp = mbcopyback(bp, -4, &temp, 2);
580: temp = htons(proto);
581: bp = mbcopyback(bp, 2, &temp, 2);
582:
583: /* Debugging */
584: LogDumpBp(LG_FRAME, bp,
585: "[%s] xmit frame to link proto=0x%04x",
586: l->name, proto);
587:
588: if (l->state != PHYS_STATE_UP) {
589: Log(LG_FRAME, ("[%s] Link: Not ready to send packet", l->name));
590: mbfree(bp);
591: return (-1);
592: }
593:
594: /* Write frame */
595: return NgFuncWriteFrame(gLinksDsock, l->hook, l->name, bp);
596: }
597:
598: /*
599: * NgFuncWriteFrame()
600: *
601: * Consumes the mbuf.
602: */
603:
604: int
605: NgFuncWriteFrame(int dsock, const char *hookname, const char *label, Mbuf bp)
606: {
607: union {
608: u_char buf[sizeof(struct sockaddr_ng) + NG_HOOKSIZ];
609: struct sockaddr_ng sa_ng;
610: } u;
611: struct sockaddr_ng *ng = &u.sa_ng;
612: int rtn;
613:
614: /* Write frame */
615: if (bp == NULL)
616: return (-1);
617:
618: /* Set dest address */
619: memset(&u.buf, 0, sizeof(u.buf));
620: strlcpy(ng->sg_data, hookname, NG_HOOKSIZ);
621: ng->sg_family = AF_NETGRAPH;
622: ng->sg_len = 3 + strlen(ng->sg_data);
623:
624: rtn = sendto(dsock, MBDATAU(bp), MBLEN(bp),
625: 0, (struct sockaddr *)ng, ng->sg_len);
626:
627: /* ENOBUFS can be expected on some links, e.g., ng_pptpgre(4) */
628: if (rtn < 0 && errno != ENOBUFS) {
629: Perror("[%s] error writing len %d frame to %s",
630: label, MBLEN(bp), hookname);
631: }
632: mbfree(bp);
633: return (rtn);
634: }
635:
636: /*
637: * NgFuncClrStats()
638: *
639: * Clear link or whole bundle statistics
640: */
641:
642: int
643: NgFuncClrStats(Bund b, u_int16_t linkNum)
644: {
645: char path[NG_PATHSIZ];
646:
647: /* Get stats */
648: snprintf(path, sizeof(path), "[%x]:", b->nodeID);
649: if (NgSendMsg(gLinksCsock, path,
650: NGM_PPP_COOKIE, NGM_PPP_CLR_LINK_STATS, &linkNum, sizeof(linkNum)) < 0) {
651: Perror("[%s] can't clear stats, link=%d", b->name, linkNum);
652: return (-1);
653: }
654: return(0);
655: }
656:
657: /*
658: * NgFuncGetStats()
659: *
660: * Get link or whole bundle statistics
661: */
662:
663: int
664: NgFuncGetStats(Bund b, u_int16_t linkNum, struct ng_ppp_link_stat *statp)
665: {
666: union {
667: u_char buf[sizeof(struct ng_mesg)
668: + sizeof(struct ng_ppp_link_stat)];
669: struct ng_mesg reply;
670: } u;
671: char path[NG_PATHSIZ];
672:
673: /* Get stats */
674: snprintf(path, sizeof(path), "[%x]:", b->nodeID);
675: if (NgFuncSendQuery(path, NGM_PPP_COOKIE, NGM_PPP_GET_LINK_STATS,
676: &linkNum, sizeof(linkNum), &u.reply, sizeof(u), NULL) < 0) {
677: Perror("[%s] can't get stats, link=%d", b->name, linkNum);
678: return -1;
679: }
680: if (statp != NULL)
681: memcpy(statp, u.reply.data, sizeof(*statp));
682: return(0);
683: }
684:
685: #ifdef NG_PPP_STATS64
686: /*
687: * NgFuncGetStats64()
688: *
689: * Get 64bit link or whole bundle statistics
690: */
691:
692: int
693: NgFuncGetStats64(Bund b, u_int16_t linkNum, struct ng_ppp_link_stat64 *statp)
694: {
695: union {
696: u_char buf[sizeof(struct ng_mesg)
697: + sizeof(struct ng_ppp_link_stat64)];
698: struct ng_mesg reply;
699: } u;
700: char path[NG_PATHSIZ];
701:
702: /* Get stats */
703: snprintf(path, sizeof(path), "[%x]:", b->nodeID);
704: if (NgFuncSendQuery(path, NGM_PPP_COOKIE, NGM_PPP_GET_LINK_STATS64,
705: &linkNum, sizeof(linkNum), &u.reply, sizeof(u), NULL) < 0) {
706: Perror("[%s] can't get stats, link=%d", b->name, linkNum);
707: return -1;
708: }
709: if (statp != NULL)
710: memcpy(statp, u.reply.data, sizeof(*statp));
711: return(0);
712: }
713: #endif
714:
715: /*
716: * NgFuncErrx()
717: */
718:
719: void
720: NgFuncErrx(const char *fmt, ...)
721: {
722: char buf[100];
723: va_list args;
724:
725: va_start(args, fmt);
726: vsnprintf(buf, sizeof(buf), fmt, args);
727: va_end(args);
728: Log(LG_ERR, ("netgraph: %s", buf));
729: }
730:
731: /*
732: * NgFuncErr()
733: */
734:
735: void
736: NgFuncErr(const char *fmt, ...)
737: {
738: char buf[100];
739: va_list args;
740:
741: va_start(args, fmt);
742: vsnprintf(buf, sizeof(buf), fmt, args);
743: va_end(args);
744: Perror("netgraph: %s", buf);
745: }
746:
747: #ifdef USE_NG_NETFLOW
748: /*
749: * NetflowSetCommand()
750: */
751:
752: static int
753: NetflowSetCommand(Context ctx, int ac, char *av[], void *arg)
754: {
755: struct sockaddr_storage *sin;
756:
757: switch ((intptr_t)arg) {
758: case SET_PEER:
759: if (ac != 2)
760: return (-1);
761: if ((sin = ParseAddrPort(ac, av, ALLOW_IPV4|ALLOW_IPV6)) == NULL)
762: return (-1);
763: gNetflowExport = *sin;
764: break;
765: case SET_SELF:
766: if ((sin = ParseAddrPort(ac, av, ALLOW_IPV4|ALLOW_IPV6)) == NULL)
767: return (-1);
768: gNetflowSource = *sin;
769: break;
770: case SET_TIMEOUTS:
771: if (ac != 2)
772: return (-1);
773: if (atoi(av[0]) <= 0 || atoi(av[1]) <= 0)
774: Error("Bad netflow timeouts \"%s %s\"", av[0], av[1]);
775: gNetflowInactive = atoi(av[0]);
776: gNetflowActive = atoi(av[1]);
777: break;
778: #if NGM_NETFLOW_COOKIE >= 1309868867
779: case SET_TEMPLATE:
780: if (ac != 2)
781: return (-1);
782: /*
783: * RFC 3954 clause 7.3
784: * "Both options MUST be configurable by the user on the Exporter."
785: */
786: if (atoi(av[0]) <= 0 || atoi(av[1]) <= 0)
787: Error("Bad netflow v9 template values \"%s %s\"", av[0], av[1]);
788: gNetflowTime = atoi(av[0]); /* Default 600 */
789: gNetflowPackets = atoi(av[1]); /* Default 500 */
790: break;
791: case SET_MTU:
792: if (ac != 1)
793: return (-1);
794: if (atoi(av[0]) < MIN_MTU || atoi(av[0]) > MAX_MTU)
795: Error("Bad netflow v9 MTU \"%s\"", av[0]);
796: gNetflowMTU = atoi(av[0]); /* Default 1500 */
797: break;
798: case SET_VERSION:
799: if (ac != 1)
800: return (-1);
801: if (atoi(av[0]) != 5 && atoi(av[0]) != 9)
802: Error("Bad netflow export version \"%s\"", av[0]);
803: gNetflowVer = atoi(av[0]); /* Default 5 */
804: break;
805: #endif
806: case SET_NODE:
807: if (ac != 1)
808: return (-1);
809: if (strlen(av[0]) == 0 || strlen(av[0]) > 63)
810: Error("Bad netflow node name \"%s\"", av[0]);
811: strlcpy(gNetflowNodeName, av[0], sizeof(gNetflowNodeName));
812: gNetflowNode=TRUE;
813: gNetflowNodeShutdown=FALSE;
814: break;
815: case SET_HOOK:
816: if (ac != 1)
817: return (-1);
818: if (atoi(av[0]) <= 0)
819: Error("Bad netflow hook number \"%s\"", av[0]);
820: gNetflowIface = atoi(av[0])-1;
821: break;
822:
823: default:
824: return (-1);
825: }
826:
827: return (0);
828: }
829: #endif /* USE_NG_NETFLOW */
830:
831: ng_ID_t
832: NgGetNodeID(int csock, const char *path)
833: {
834: union {
835: u_char buf[sizeof(struct ng_mesg) + sizeof(struct nodeinfo)];
836: struct ng_mesg reply;
837: } u;
838: struct nodeinfo *const ni = (struct nodeinfo *)(void *)u.reply.data;
839:
840: if (csock < 0) {
841: if (!gNgStatSock) {
842: char name[NG_NODESIZ];
843:
844: /* Create a netgraph socket node */
845: snprintf(name, sizeof(name), "mpd%d-stats", gPid);
846: if (NgMkSockNode(name, &gNgStatSock, NULL) < 0) {
847: Perror("NgFuncSendQuery: can't create %s node", NG_SOCKET_NODE_TYPE);
848: return(-1);
849: }
850: (void) fcntl(gNgStatSock, F_SETFD, 1);
851: }
852: csock = gNgStatSock;
853: }
854:
855: if (NgSendMsg(csock, path,
856: NGM_GENERIC_COOKIE, NGM_NODEINFO, NULL, 0) < 0)
857: return (0);
858: if (NgRecvMsg(csock, &u.reply, sizeof(u), NULL) < 0)
859: return (0);
860:
861: return (ni->id);
862: }
863:
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