Annotation of src/usr.bin/tcpbench/tcpbench.c, Revision 1.35
1.1 djm 1: /*
2: * Copyright (c) 2008 Damien Miller <djm@mindrot.org>
1.20 claudio 3: * Copyright (c) 2011 Christiano F. Haesbaert <haesbaert@haesbaert.org>
1.1 djm 4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17:
18: #include <sys/types.h>
19: #include <sys/time.h>
20: #include <sys/socket.h>
21: #include <sys/socketvar.h>
1.11 claudio 22: #include <sys/resource.h>
1.20 claudio 23: #include <sys/queue.h>
1.1 djm 24:
25: #include <net/route.h>
26:
27: #include <netinet/in.h>
28: #include <netinet/in_systm.h>
29: #include <netinet/ip.h>
30: #include <netinet/tcp.h>
31: #include <netinet/tcp_timer.h>
32: #include <netinet/tcp_fsm.h>
33: #include <netinet/in_pcb.h>
34: #include <netinet/tcp_var.h>
35:
36: #include <arpa/inet.h>
37:
38: #include <unistd.h>
39: #include <limits.h>
40: #include <stdlib.h>
41: #include <stdio.h>
42: #include <string.h>
43: #include <errno.h>
1.20 claudio 44: #include <event.h>
1.1 djm 45: #include <netdb.h>
46: #include <signal.h>
47: #include <err.h>
48: #include <fcntl.h>
49: #include <poll.h>
50:
51: #include <kvm.h>
52: #include <nlist.h>
53:
1.11 claudio 54: #define DEFAULT_PORT "12345"
55: #define DEFAULT_STATS_INTERVAL 1000 /* ms */
1.20 claudio 56: #define DEFAULT_BUF (256 * 1024)
57: #define DEFAULT_UDP_PKT (1500 - 28) /* TODO don't hardcode this */
58: #define TCP_MODE !ptb->uflag
59: #define UDP_MODE ptb->uflag
1.11 claudio 60: #define MAX_FD 1024
1.1 djm 61:
1.20 claudio 62: /* Our tcpbench globals */
63: struct {
64: u_int Vflag; /* rtableid */
65: int Sflag; /* Socket buffer size (tcp mode) */
66: u_int rflag; /* Report rate (ms) */
67: int sflag; /* True if server */
1.24 haesbaer 68: int Tflag; /* ToS if != -1 */
1.20 claudio 69: int vflag; /* Verbose */
70: int uflag; /* UDP mode */
71: kvm_t *kvmh; /* Kvm handler */
72: char **kvars; /* Kvm enabled vars */
73: u_long ktcbtab; /* Ktcb */
74: char *dummybuf; /* IO buffer */
75: size_t dummybuf_len; /* IO buffer len */
76: } tcpbench, *ptb;
1.1 djm 77:
1.33 haesbaer 78: struct tcpservsock {
79: struct event ev;
80: struct event evt;
81: int fd;
82: };
83:
1.20 claudio 84: /* stats for a single tcp connection, udp uses only one */
1.1 djm 85: struct statctx {
1.20 claudio 86: TAILQ_ENTRY(statctx) entry;
1.11 claudio 87: struct timeval t_start, t_last;
1.1 djm 88: unsigned long long bytes;
1.20 claudio 89: int fd;
90: char *buf;
91: size_t buflen;
92: struct event ev;
93: /* TCP only */
1.33 haesbaer 94: struct tcpservsock *tcp_ts;
1.20 claudio 95: u_long tcp_tcbaddr;
96: /* UDP only */
97: u_long udp_slice_pkts;
1.1 djm 98: };
99:
1.20 claudio 100: static void signal_handler(int, short, void *);
101: static void saddr_ntop(const struct sockaddr *, socklen_t, char *, size_t);
102: static void drop_gid(void);
103: static void set_slice_timer(int);
104: static void print_tcp_header(void);
105: static void kget(u_long, void *, size_t);
106: static u_long kfind_tcb(int);
107: static void kupdate_stats(u_long, struct inpcb *, struct tcpcb *,
108: struct socket *);
109: static void list_kvars(void);
110: static void check_kvar(const char *);
111: static char ** check_prepare_kvars(char *);
112: static void stats_prepare(struct statctx *);
113: static void tcp_stats_display(unsigned long long, long double, float,
114: struct statctx *, struct inpcb *, struct tcpcb *, struct socket *);
115: static void tcp_process_slice(int, short, void *);
116: static void tcp_server_handle_sc(int, short, void *);
117: static void tcp_server_accept(int, short, void *);
118: static void server_init(struct addrinfo *, struct statctx *);
119: static void client_handle_sc(int, short, void *);
1.25 haesbaer 120: static void client_init(struct addrinfo *, int, struct statctx *,
121: struct addrinfo *);
1.20 claudio 122: static int clock_gettime_tv(clockid_t, struct timeval *);
123: static void udp_server_handle_sc(int, short, void *);
124: static void udp_process_slice(int, short, void *);
1.24 haesbaer 125: static int map_tos(char *, int *);
1.11 claudio 126: /*
127: * We account the mainstats here, that is the stats
128: * for all connections, all variables starting with slice
129: * are used to account information for the timeslice
130: * between each output. Peak variables record the highest
131: * between all slices so far.
132: */
133: static struct {
134: unsigned long long slice_bytes; /* bytes for last slice */
135: long double peak_mbps; /* peak mbps so far */
136: int nconns; /* connected clients */
1.20 claudio 137: struct event timer; /* process timer */
1.11 claudio 138: } mainstats;
139:
1.20 claudio 140: /* When adding variables, also add to tcp_stats_display() */
1.1 djm 141: static const char *allowed_kvars[] = {
142: "inpcb.inp_flags",
143: "sockb.so_rcv.sb_cc",
1.26 haesbaer 144: "sockb.so_rcv.sb_hiwat",
1.19 claudio 145: "sockb.so_rcv.sb_wat",
1.1 djm 146: "sockb.so_snd.sb_cc",
1.26 haesbaer 147: "sockb.so_snd.sb_hiwat",
1.19 claudio 148: "sockb.so_snd.sb_wat",
1.26 haesbaer 149: "tcpcb.last_ack_sent",
150: "tcpcb.max_sndwnd",
151: "tcpcb.rcv_adv",
152: "tcpcb.rcv_nxt",
153: "tcpcb.rcv_scale",
154: "tcpcb.rcv_wnd",
155: "tcpcb.rfbuf_cnt",
156: "tcpcb.rfbuf_ts",
157: "tcpcb.snd_cwnd",
158: "tcpcb.snd_max",
159: "tcpcb.snd_nxt",
160: "tcpcb.snd_scale",
161: "tcpcb.snd_ssthresh",
1.1 djm 162: "tcpcb.snd_una",
163: "tcpcb.snd_wl1",
164: "tcpcb.snd_wl2",
165: "tcpcb.snd_wnd",
166: "tcpcb.t_rcvtime",
1.26 haesbaer 167: "tcpcb.t_rtseq",
168: "tcpcb.t_rttmin",
1.1 djm 169: "tcpcb.t_rtttime",
1.26 haesbaer 170: "tcpcb.t_rttvar",
1.1 djm 171: "tcpcb.t_srtt",
1.26 haesbaer 172: "tcpcb.ts_recent",
1.19 claudio 173: "tcpcb.ts_recent_age",
1.1 djm 174: NULL
175: };
176:
1.20 claudio 177: TAILQ_HEAD(, statctx) sc_queue;
1.1 djm 178:
179: static void __dead
180: usage(void)
181: {
182: fprintf(stderr,
1.6 jmc 183: "usage: tcpbench -l\n"
1.25 haesbaer 184: " tcpbench [-uv] [-B buf] [-b addr] [-k kvars] [-n connections]\n"
185: " [-p port] [-r interval] [-S space] [-T toskeyword]\n"
1.30 henning 186: " [-t secs] [-V rtable] hostname\n"
1.21 jmc 187: " tcpbench -s [-uv] [-B buf] [-k kvars] [-p port]\n"
1.24 haesbaer 188: " [-r interval] [-S space] [-T toskeyword] [-V rtable]\n");
1.1 djm 189: exit(1);
190: }
191:
192: static void
1.20 claudio 193: signal_handler(int sig, short event, void *bula)
194: {
195: /*
196: * signal handler rules don't apply, libevent decouples for us
197: */
198: switch (sig) {
199: case SIGINT:
200: case SIGTERM:
201: case SIGHUP:
202: warnx("Terminated by signal %d", sig);
203: exit(0);
204: break; /* NOTREACHED */
205: default:
206: errx(1, "unexpected signal %d", sig);
207: break; /* NOTREACHED */
208: }
209: }
210:
211: static void
1.1 djm 212: saddr_ntop(const struct sockaddr *addr, socklen_t alen, char *buf, size_t len)
213: {
214: char hbuf[NI_MAXHOST], pbuf[NI_MAXSERV];
215: int herr;
216:
1.3 djm 217: if ((herr = getnameinfo(addr, alen, hbuf, sizeof(hbuf),
218: pbuf, sizeof(pbuf), NI_NUMERICHOST|NI_NUMERICSERV)) != 0) {
1.1 djm 219: if (herr == EAI_SYSTEM)
220: err(1, "getnameinfo");
221: else
222: errx(1, "getnameinfo: %s", gai_strerror(herr));
223: }
224: snprintf(buf, len, "[%s]:%s", hbuf, pbuf);
225: }
226:
227: static void
1.20 claudio 228: drop_gid(void)
229: {
230: gid_t gid;
231:
232: gid = getgid();
233: if (setresgid(gid, gid, gid) == -1)
234: err(1, "setresgid");
235: }
236:
237: static void
238: set_slice_timer(int on)
1.11 claudio 239: {
1.20 claudio 240: struct timeval tv;
1.11 claudio 241:
1.20 claudio 242: if (ptb->rflag == 0)
1.11 claudio 243: return;
244:
1.20 claudio 245: if (on) {
246: if (evtimer_pending(&mainstats.timer, NULL))
247: return;
248: timerclear(&tv);
249: /* XXX Is there a better way to do this ? */
250: tv.tv_sec = ptb->rflag / 1000;
251: tv.tv_usec = (ptb->rflag % 1000) * 1000;
252:
253: evtimer_add(&mainstats.timer, &tv);
254: } else if (evtimer_pending(&mainstats.timer, NULL))
255: evtimer_del(&mainstats.timer);
256: }
1.11 claudio 257:
1.20 claudio 258: static int
259: clock_gettime_tv(clockid_t clock_id, struct timeval *tv)
260: {
261: struct timespec ts;
262:
263: if (clock_gettime(clock_id, &ts) == -1)
264: return (-1);
265:
266: TIMESPEC_TO_TIMEVAL(tv, &ts);
267:
268: return (0);
1.11 claudio 269: }
270:
271: static void
1.20 claudio 272: print_tcp_header(void)
1.11 claudio 273: {
274: char **kv;
1.20 claudio 275:
1.11 claudio 276: printf("%12s %14s %12s %8s ", "elapsed_ms", "bytes", "mbps",
277: "bwidth");
1.20 claudio 278: for (kv = ptb->kvars; ptb->kvars != NULL && *kv != NULL; kv++)
279: printf("%s%s", kv != ptb->kvars ? "," : "", *kv);
1.11 claudio 280: printf("\n");
281: }
282:
283: static void
1.20 claudio 284: kget(u_long addr, void *buf, size_t size)
1.1 djm 285: {
1.20 claudio 286: if (kvm_read(ptb->kvmh, addr, buf, size) != (ssize_t)size)
287: errx(1, "kvm_read: %s", kvm_geterr(ptb->kvmh));
1.1 djm 288: }
289:
290: static u_long
1.20 claudio 291: kfind_tcb(int sock)
1.1 djm 292: {
293: struct inpcbtable tcbtab;
294: struct inpcb *head, *next, *prev;
295: struct inpcb inpcb;
296: struct tcpcb tcpcb;
297:
298: struct sockaddr_storage me, them;
299: socklen_t melen, themlen;
300: struct sockaddr_in *in4;
301: struct sockaddr_in6 *in6;
302: char tmp1[64], tmp2[64];
1.11 claudio 303: int nretry;
1.1 djm 304:
1.11 claudio 305: nretry = 10;
1.1 djm 306: melen = themlen = sizeof(struct sockaddr_storage);
307: if (getsockname(sock, (struct sockaddr *)&me, &melen) == -1)
308: err(1, "getsockname");
309: if (getpeername(sock, (struct sockaddr *)&them, &themlen) == -1)
310: err(1, "getpeername");
311: if (me.ss_family != them.ss_family)
312: errx(1, "%s: me.ss_family != them.ss_family", __func__);
313: if (me.ss_family != AF_INET && me.ss_family != AF_INET6)
314: errx(1, "%s: unknown socket family", __func__);
1.20 claudio 315: if (ptb->vflag >= 2) {
1.1 djm 316: saddr_ntop((struct sockaddr *)&me, me.ss_len,
317: tmp1, sizeof(tmp1));
318: saddr_ntop((struct sockaddr *)&them, them.ss_len,
319: tmp2, sizeof(tmp2));
320: fprintf(stderr, "Our socket local %s remote %s\n", tmp1, tmp2);
321: }
1.20 claudio 322: if (ptb->vflag >= 2)
323: fprintf(stderr, "Using PCB table at %lu\n", ptb->ktcbtab);
1.11 claudio 324: retry:
1.20 claudio 325: kget(ptb->ktcbtab, &tcbtab, sizeof(tcbtab));
1.1 djm 326: prev = head = (struct inpcb *)&CIRCLEQ_FIRST(
1.20 claudio 327: &((struct inpcbtable *)ptb->ktcbtab)->inpt_queue);
1.1 djm 328: next = CIRCLEQ_FIRST(&tcbtab.inpt_queue);
329:
1.20 claudio 330: if (ptb->vflag >= 2)
1.1 djm 331: fprintf(stderr, "PCB head at %p\n", head);
332: while (next != head) {
1.20 claudio 333: if (ptb->vflag >= 2)
1.1 djm 334: fprintf(stderr, "Checking PCB %p\n", next);
1.20 claudio 335: kget((u_long)next, &inpcb, sizeof(inpcb));
1.11 claudio 336: if (CIRCLEQ_PREV(&inpcb, inp_queue) != prev) {
337: if (nretry--) {
338: warnx("pcb prev pointer insane");
339: goto retry;
1.28 haesbaer 340: } else
1.11 claudio 341: errx(1, "pcb prev pointer insane,"
342: " all attempts exausted");
343: }
1.1 djm 344: prev = next;
345: next = CIRCLEQ_NEXT(&inpcb, inp_queue);
346:
347: if (me.ss_family == AF_INET) {
348: if ((inpcb.inp_flags & INP_IPV6) != 0) {
1.20 claudio 349: if (ptb->vflag >= 2)
1.1 djm 350: fprintf(stderr, "Skip: INP_IPV6");
351: continue;
352: }
1.20 claudio 353: if (ptb->vflag >= 2) {
1.1 djm 354: inet_ntop(AF_INET, &inpcb.inp_laddr,
355: tmp1, sizeof(tmp1));
356: inet_ntop(AF_INET, &inpcb.inp_faddr,
357: tmp2, sizeof(tmp2));
358: fprintf(stderr, "PCB %p local: [%s]:%d "
359: "remote: [%s]:%d\n", prev,
360: tmp1, inpcb.inp_lport,
361: tmp2, inpcb.inp_fport);
362: }
363: in4 = (struct sockaddr_in *)&me;
364: if (memcmp(&in4->sin_addr, &inpcb.inp_laddr,
365: sizeof(struct in_addr)) != 0 ||
366: in4->sin_port != inpcb.inp_lport)
367: continue;
368: in4 = (struct sockaddr_in *)&them;
369: if (memcmp(&in4->sin_addr, &inpcb.inp_faddr,
370: sizeof(struct in_addr)) != 0 ||
371: in4->sin_port != inpcb.inp_fport)
372: continue;
373: } else {
374: if ((inpcb.inp_flags & INP_IPV6) == 0)
375: continue;
1.20 claudio 376: if (ptb->vflag >= 2) {
1.1 djm 377: inet_ntop(AF_INET6, &inpcb.inp_laddr6,
378: tmp1, sizeof(tmp1));
379: inet_ntop(AF_INET6, &inpcb.inp_faddr6,
380: tmp2, sizeof(tmp2));
381: fprintf(stderr, "PCB %p local: [%s]:%d "
382: "remote: [%s]:%d\n", prev,
383: tmp1, inpcb.inp_lport,
384: tmp2, inpcb.inp_fport);
385: }
386: in6 = (struct sockaddr_in6 *)&me;
387: if (memcmp(&in6->sin6_addr, &inpcb.inp_laddr6,
388: sizeof(struct in6_addr)) != 0 ||
389: in6->sin6_port != inpcb.inp_lport)
390: continue;
391: in6 = (struct sockaddr_in6 *)&them;
392: if (memcmp(&in6->sin6_addr, &inpcb.inp_faddr6,
393: sizeof(struct in6_addr)) != 0 ||
394: in6->sin6_port != inpcb.inp_fport)
395: continue;
396: }
1.20 claudio 397: kget((u_long)inpcb.inp_ppcb, &tcpcb, sizeof(tcpcb));
1.1 djm 398: if (tcpcb.t_state != TCPS_ESTABLISHED) {
1.20 claudio 399: if (ptb->vflag >= 2)
1.1 djm 400: fprintf(stderr, "Not established\n");
401: continue;
402: }
1.20 claudio 403: if (ptb->vflag >= 2)
1.1 djm 404: fprintf(stderr, "Found PCB at %p\n", prev);
1.20 claudio 405: return ((u_long)prev);
1.1 djm 406: }
407:
408: errx(1, "No matching PCB found");
409: }
410:
411: static void
1.20 claudio 412: kupdate_stats(u_long tcbaddr, struct inpcb *inpcb,
413: struct tcpcb *tcpcb, struct socket *sockb)
1.1 djm 414: {
1.20 claudio 415: kget(tcbaddr, inpcb, sizeof(*inpcb));
416: kget((u_long)inpcb->inp_ppcb, tcpcb, sizeof(*tcpcb));
417: kget((u_long)inpcb->inp_socket, sockb, sizeof(*sockb));
1.1 djm 418: }
419:
420: static void
421: check_kvar(const char *var)
422: {
1.16 deraadt 423: u_int i;
1.1 djm 424:
425: for (i = 0; allowed_kvars[i] != NULL; i++)
426: if (strcmp(allowed_kvars[i], var) == 0)
427: return;
428: errx(1, "Unrecognised kvar: %s", var);
429: }
430:
431: static void
432: list_kvars(void)
433: {
1.16 deraadt 434: u_int i;
1.1 djm 435:
1.26 haesbaer 436: printf("Supported kernel variables:\n");
1.1 djm 437: for (i = 0; allowed_kvars[i] != NULL; i++)
1.26 haesbaer 438: printf("\t%s\n", allowed_kvars[i]);
1.1 djm 439: }
440:
441: static char **
442: check_prepare_kvars(char *list)
443: {
444: char *item, **ret = NULL;
1.16 deraadt 445: u_int n = 0;
1.1 djm 446:
447: while ((item = strsep(&list, ", \t\n")) != NULL) {
448: check_kvar(item);
449: if ((ret = realloc(ret, sizeof(*ret) * (++n + 1))) == NULL)
450: errx(1, "realloc(kvars)");
451: if ((ret[n - 1] = strdup(item)) == NULL)
452: errx(1, "strdup");
453: ret[n] = NULL;
454: }
1.20 claudio 455: return (ret);
1.1 djm 456: }
457:
458: static void
1.20 claudio 459: stats_prepare(struct statctx *sc)
1.1 djm 460: {
1.20 claudio 461: sc->buf = ptb->dummybuf;
462: sc->buflen = ptb->dummybuf_len;
463:
464: if (ptb->kvars)
465: sc->tcp_tcbaddr = kfind_tcb(sc->fd);
466: if (clock_gettime_tv(CLOCK_MONOTONIC, &sc->t_start) == -1)
467: err(1, "clock_gettime_tv");
1.1 djm 468: sc->t_last = sc->t_start;
469:
470: }
471:
472: static void
1.20 claudio 473: tcp_stats_display(unsigned long long total_elapsed, long double mbps,
1.11 claudio 474: float bwperc, struct statctx *sc, struct inpcb *inpcb,
475: struct tcpcb *tcpcb, struct socket *sockb)
476: {
477: int j;
478:
479: printf("%12llu %14llu %12.3Lf %7.2f%% ", total_elapsed, sc->bytes,
480: mbps, bwperc);
481:
1.20 claudio 482: if (ptb->kvars != NULL) {
483: kupdate_stats(sc->tcp_tcbaddr, inpcb, tcpcb,
1.11 claudio 484: sockb);
1.1 djm 485:
1.20 claudio 486: for (j = 0; ptb->kvars[j] != NULL; j++) {
1.11 claudio 487: #define S(a) #a
488: #define P(b, v, f) \
1.20 claudio 489: if (strcmp(ptb->kvars[j], S(b.v)) == 0) { \
1.11 claudio 490: printf("%s"f, j > 0 ? "," : "", b->v); \
491: continue; \
492: }
493: P(inpcb, inp_flags, "0x%08x")
494: P(sockb, so_rcv.sb_cc, "%lu")
1.26 haesbaer 495: P(sockb, so_rcv.sb_hiwat, "%lu")
1.19 claudio 496: P(sockb, so_rcv.sb_wat, "%lu")
1.11 claudio 497: P(sockb, so_snd.sb_cc, "%lu")
1.26 haesbaer 498: P(sockb, so_snd.sb_hiwat, "%lu")
1.19 claudio 499: P(sockb, so_snd.sb_wat, "%lu")
1.26 haesbaer 500: P(tcpcb, last_ack_sent, "%u")
501: P(tcpcb, max_sndwnd, "%lu")
502: P(tcpcb, rcv_adv, "%u")
503: P(tcpcb, rcv_nxt, "%u")
504: P(tcpcb, rcv_scale, "%u")
505: P(tcpcb, rcv_wnd, "%lu")
506: P(tcpcb, rfbuf_cnt, "%u")
507: P(tcpcb, rfbuf_ts, "%u")
508: P(tcpcb, snd_cwnd, "%lu")
509: P(tcpcb, snd_max, "%u")
510: P(tcpcb, snd_nxt, "%u")
511: P(tcpcb, snd_scale, "%u")
512: P(tcpcb, snd_ssthresh, "%lu")
1.11 claudio 513: P(tcpcb, snd_una, "%u")
514: P(tcpcb, snd_wl1, "%u")
515: P(tcpcb, snd_wl2, "%u")
516: P(tcpcb, snd_wnd, "%lu")
517: P(tcpcb, t_rcvtime, "%u")
1.26 haesbaer 518: P(tcpcb, t_rtseq, "%u")
519: P(tcpcb, t_rttmin, "%hu")
1.11 claudio 520: P(tcpcb, t_rtttime, "%u")
1.26 haesbaer 521: P(tcpcb, t_rttvar, "%hu")
1.11 claudio 522: P(tcpcb, t_srtt, "%hu")
1.26 haesbaer 523: P(tcpcb, ts_recent, "%u")
1.19 claudio 524: P(tcpcb, ts_recent_age, "%u")
1.11 claudio 525: #undef S
1.1 djm 526: #undef P
527: }
528: }
529: printf("\n");
530: }
531:
532: static void
1.20 claudio 533: tcp_process_slice(int fd, short event, void *bula)
1.1 djm 534: {
1.11 claudio 535: unsigned long long total_elapsed, since_last;
536: long double mbps, slice_mbps = 0;
537: float bwperc;
1.20 claudio 538: struct statctx *sc;
1.11 claudio 539: struct timeval t_cur, t_diff;
540: struct inpcb inpcb;
541: struct tcpcb tcpcb;
542: struct socket sockb;
543:
1.20 claudio 544: TAILQ_FOREACH(sc, &sc_queue, entry) {
545: if (clock_gettime_tv(CLOCK_MONOTONIC, &t_cur) == -1)
546: err(1, "clock_gettime_tv");
547: if (ptb->kvars != NULL) /* process kernel stats */
548: kupdate_stats(sc->tcp_tcbaddr, &inpcb, &tcpcb,
1.11 claudio 549: &sockb);
1.20 claudio 550:
1.11 claudio 551: timersub(&t_cur, &sc->t_start, &t_diff);
552: total_elapsed = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000;
553: timersub(&t_cur, &sc->t_last, &t_diff);
554: since_last = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000;
555: bwperc = (sc->bytes * 100.0) / mainstats.slice_bytes;
556: mbps = (sc->bytes * 8) / (since_last * 1000.0);
557: slice_mbps += mbps;
558:
1.20 claudio 559: tcp_stats_display(total_elapsed, mbps, bwperc, sc,
1.11 claudio 560: &inpcb, &tcpcb, &sockb);
561:
562: sc->t_last = t_cur;
563: sc->bytes = 0;
564: }
1.1 djm 565:
1.11 claudio 566: /* process stats for this slice */
567: if (slice_mbps > mainstats.peak_mbps)
568: mainstats.peak_mbps = slice_mbps;
1.20 claudio 569: printf("Conn: %3d Mbps: %12.3Lf Peak Mbps: %12.3Lf Avg Mbps: %12.3Lf\n",
570: mainstats.nconns, slice_mbps, mainstats.peak_mbps,
571: slice_mbps / mainstats.nconns);
572: mainstats.slice_bytes = 0;
573:
574: set_slice_timer(mainstats.nconns > 0);
575: }
576:
577: static void
578: udp_process_slice(int fd, short event, void *v_sc)
579: {
580: struct statctx *sc = v_sc;
1.31 haesbaer 581: unsigned long long total_elapsed, since_last, pps;
582: long double slice_mbps;
1.20 claudio 583: struct timeval t_cur, t_diff;
584:
585: if (clock_gettime_tv(CLOCK_MONOTONIC, &t_cur) == -1)
586: err(1, "clock_gettime_tv");
587: /* Calculate pps */
588: timersub(&t_cur, &sc->t_start, &t_diff);
589: total_elapsed = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000;
590: timersub(&t_cur, &sc->t_last, &t_diff);
591: since_last = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000;
592: slice_mbps = (sc->bytes * 8) / (since_last * 1000.0);
593: pps = (sc->udp_slice_pkts * 1000) / since_last;
594: if (slice_mbps > mainstats.peak_mbps)
595: mainstats.peak_mbps = slice_mbps;
1.31 haesbaer 596: printf("Elapsed: %11llu Mbps: %11.3Lf Peak Mbps: %11.3Lf %s PPS: %7llu\n",
1.20 claudio 597: total_elapsed, slice_mbps, mainstats.peak_mbps,
598: ptb->sflag ? "Rx" : "Tx", pps);
599:
600: /* Clean up this slice time */
601: sc->t_last = t_cur;
602: sc->bytes = 0;
603: sc->udp_slice_pkts = 0;
604: set_slice_timer(1);
1.11 claudio 605: }
1.1 djm 606:
1.20 claudio 607: static void
608: udp_server_handle_sc(int fd, short event, void *v_sc)
1.11 claudio 609: {
610: ssize_t n;
1.20 claudio 611: struct statctx *sc = v_sc;
1.1 djm 612:
1.20 claudio 613: n = read(fd, ptb->dummybuf, ptb->dummybuf_len);
614: if (n == 0)
615: return;
616: else if (n == -1) {
1.34 haesbaer 617: if (errno != EINTR && errno != EWOULDBLOCK)
618: warn("fd %d read error", fd);
1.20 claudio 619: return;
620: }
1.11 claudio 621:
1.20 claudio 622: if (ptb->vflag >= 3)
623: fprintf(stderr, "read: %zd bytes\n", n);
624: /* If this was our first packet, start slice timer */
625: if (mainstats.peak_mbps == 0)
626: set_slice_timer(1);
627: /* Account packet */
628: sc->udp_slice_pkts++;
629: sc->bytes += n;
630: }
631:
632: static void
633: tcp_server_handle_sc(int fd, short event, void *v_sc)
634: {
635: struct statctx *sc = v_sc;
636: ssize_t n;
637:
638: n = read(sc->fd, sc->buf, sc->buflen);
639: if (n == -1) {
1.34 haesbaer 640: if (errno != EINTR && errno != EWOULDBLOCK)
641: warn("fd %d read error", sc->fd);
1.20 claudio 642: return;
643: } else if (n == 0) {
644: if (ptb->vflag)
645: fprintf(stderr, "%8d closed by remote end\n", sc->fd);
1.33 haesbaer 646:
647: TAILQ_REMOVE(&sc_queue, sc, entry);
648:
1.23 sthen 649: event_del(&sc->ev);
1.20 claudio 650: close(sc->fd);
1.33 haesbaer 651:
652: /* Some file descriptors are available again. */
653: if (evtimer_pending(&sc->tcp_ts->evt, NULL)) {
654: evtimer_del(&sc->tcp_ts->evt);
655: event_add(&sc->tcp_ts->ev, NULL);
656: }
657:
1.20 claudio 658: free(sc);
659: mainstats.nconns--;
660: set_slice_timer(mainstats.nconns > 0);
661: return;
1.1 djm 662: }
1.20 claudio 663: if (ptb->vflag >= 3)
1.11 claudio 664: fprintf(stderr, "read: %zd bytes\n", n);
1.20 claudio 665: sc->bytes += n;
666: mainstats.slice_bytes += n;
667: }
1.11 claudio 668:
1.20 claudio 669: static void
1.33 haesbaer 670: tcp_server_accept(int fd, short event, void *arg)
1.20 claudio 671: {
1.33 haesbaer 672: struct tcpservsock *ts = arg;
1.20 claudio 673: int sock, r;
674: struct statctx *sc;
675: struct sockaddr_storage ss;
676: socklen_t sslen;
677: char tmp[128];
678:
679: sslen = sizeof(ss);
1.33 haesbaer 680:
681: event_add(&ts->ev, NULL);
682: if (event & EV_TIMEOUT)
683: return;
1.20 claudio 684: if ((sock = accept(fd, (struct sockaddr *)&ss, &sslen)) == -1) {
1.33 haesbaer 685: /*
686: * Pause accept if we are out of file descriptors, or
687: * libevent will haunt us here too.
688: */
689: if (errno == ENFILE || errno == EMFILE) {
690: struct timeval evtpause = { 1, 0 };
691:
692: event_del(&ts->ev);
693: evtimer_add(&ts->evt, &evtpause);
1.34 haesbaer 694: } else if (errno != EWOULDBLOCK && errno != EINTR)
1.33 haesbaer 695: warn("accept");
1.20 claudio 696: return;
697: }
698: saddr_ntop((struct sockaddr *)&ss, sslen,
699: tmp, sizeof(tmp));
700: if ((r = fcntl(sock, F_GETFL, 0)) == -1)
701: err(1, "fcntl(F_GETFL)");
702: r |= O_NONBLOCK;
703: if (fcntl(sock, F_SETFL, r) == -1)
704: err(1, "fcntl(F_SETFL, O_NONBLOCK)");
1.24 haesbaer 705: if (ptb->Tflag != -1 && ss.ss_family == AF_INET) {
706: if (setsockopt(sock, IPPROTO_IP, IP_TOS,
707: &ptb->Tflag, sizeof(ptb->Tflag)))
708: err(1, "setsockopt IP_TOS");
709: }
710: if (ptb->Tflag != -1 && ss.ss_family == AF_INET6) {
711: if (setsockopt(sock, IPPROTO_IPV6, IPV6_TCLASS,
712: &ptb->Tflag, sizeof(ptb->Tflag)))
713: err(1, "setsockopt IPV6_TCLASS");
714: }
1.20 claudio 715: /* Alloc client structure and register reading callback */
716: if ((sc = calloc(1, sizeof(*sc))) == NULL)
717: err(1, "calloc");
1.33 haesbaer 718: sc->tcp_ts = ts;
1.20 claudio 719: sc->fd = sock;
720: stats_prepare(sc);
721: event_set(&sc->ev, sc->fd, EV_READ | EV_PERSIST,
722: tcp_server_handle_sc, sc);
723: event_add(&sc->ev, NULL);
724: TAILQ_INSERT_TAIL(&sc_queue, sc, entry);
725: mainstats.nconns++;
726: set_slice_timer(mainstats.nconns > 0);
727: if (ptb->vflag)
1.28 haesbaer 728: fprintf(stderr, "Accepted connection from %s, fd = %d\n",
729: tmp, sc->fd);
1.1 djm 730: }
731:
1.20 claudio 732: static void
733: server_init(struct addrinfo *aitop, struct statctx *udp_sc)
1.1 djm 734: {
735: char tmp[128];
1.11 claudio 736: int sock, on = 1;
1.1 djm 737: struct addrinfo *ai;
1.20 claudio 738: struct event *ev;
1.33 haesbaer 739: struct tcpservsock *ts;
1.11 claudio 740: nfds_t lnfds;
1.1 djm 741:
1.11 claudio 742: lnfds = 0;
1.1 djm 743: for (ai = aitop; ai != NULL; ai = ai->ai_next) {
744: saddr_ntop(ai->ai_addr, ai->ai_addrlen, tmp, sizeof(tmp));
1.20 claudio 745: if (ptb->vflag)
746: fprintf(stderr, "Try to bind to %s\n", tmp);
1.1 djm 747: if ((sock = socket(ai->ai_family, ai->ai_socktype,
748: ai->ai_protocol)) == -1) {
749: if (ai->ai_next == NULL)
750: err(1, "socket");
1.20 claudio 751: if (ptb->vflag)
1.1 djm 752: warn("socket");
753: continue;
754: }
1.22 mikeb 755: if (ptb->Vflag) {
756: if (setsockopt(sock, SOL_SOCKET, SO_RTABLE,
757: &ptb->Vflag, sizeof(ptb->Vflag)) == -1) {
758: if (errno == ENOPROTOOPT)
759: warn("set rtable");
760: else
761: err(1, "setsockopt SO_RTABLE");
762: }
763: }
1.24 haesbaer 764: if (ptb->Tflag != -1 && ai->ai_family == AF_INET) {
765: if (setsockopt(sock, IPPROTO_IP, IP_TOS,
766: &ptb->Tflag, sizeof(ptb->Tflag)))
767: err(1, "setsockopt IP_TOS");
768: }
769: if (ptb->Tflag != -1 && ai->ai_family == AF_INET6) {
770: if (setsockopt(sock, IPPROTO_IPV6, IPV6_TCLASS,
771: &ptb->Tflag, sizeof(ptb->Tflag)))
772: err(1, "setsockopt IPV6_TCLASS");
773: }
1.1 djm 774: if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
775: &on, sizeof(on)) == -1)
776: warn("reuse port");
777: if (bind(sock, ai->ai_addr, ai->ai_addrlen) != 0) {
778: if (ai->ai_next == NULL)
779: err(1, "bind");
1.20 claudio 780: if (ptb->vflag)
1.1 djm 781: warn("bind");
782: close(sock);
783: continue;
784: }
1.20 claudio 785: if (ptb->Sflag) {
1.1 djm 786: if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF,
1.20 claudio 787: &ptb->Sflag, sizeof(ptb->Sflag)) == -1)
788: warn("set receive buffer size");
1.1 djm 789: }
1.20 claudio 790: if (TCP_MODE) {
791: if (listen(sock, 64) == -1) {
792: if (ai->ai_next == NULL)
793: err(1, "listen");
794: if (ptb->vflag)
795: warn("listen");
796: close(sock);
797: continue;
798: }
1.1 djm 799: }
1.33 haesbaer 800: if (UDP_MODE) {
801: if ((ev = calloc(1, sizeof(*ev))) == NULL)
802: err(1, "calloc");
1.20 claudio 803: event_set(ev, sock, EV_READ | EV_PERSIST,
804: udp_server_handle_sc, udp_sc);
1.33 haesbaer 805: event_add(ev, NULL);
806: } else {
807: if ((ts = calloc(1, sizeof(*ts))) == NULL)
808: err(1, "calloc");
809:
810: ts->fd = sock;
811: evtimer_set(&ts->evt, tcp_server_accept, ts);
812: event_set(&ts->ev, ts->fd, EV_READ,
813: tcp_server_accept, ts);
814: event_add(&ts->ev, NULL);
815: }
1.20 claudio 816: if (ptb->vflag >= 3)
817: fprintf(stderr, "bound to fd %d\n", sock);
1.11 claudio 818: lnfds++;
1.1 djm 819: }
820: freeaddrinfo(aitop);
1.11 claudio 821: if (lnfds == 0)
1.1 djm 822: errx(1, "No working listen addresses found");
1.11 claudio 823: }
824:
825: static void
1.20 claudio 826: client_handle_sc(int fd, short event, void *v_sc)
827: {
828: struct statctx *sc = v_sc;
829: ssize_t n;
1.1 djm 830:
1.20 claudio 831: if ((n = write(sc->fd, sc->buf, sc->buflen)) == -1) {
1.34 haesbaer 832: if (errno == EINTR || errno == EWOULDBLOCK ||
1.20 claudio 833: (UDP_MODE && errno == ENOBUFS))
1.34 haesbaer 834: return;
1.20 claudio 835: err(1, "write");
1.11 claudio 836: }
1.20 claudio 837: if (TCP_MODE && n == 0) {
1.28 haesbaer 838: fprintf(stderr, "Remote end closed connection");
1.20 claudio 839: exit(1);
1.1 djm 840: }
1.20 claudio 841: if (ptb->vflag >= 3)
1.28 haesbaer 842: fprintf(stderr, "write: %zd bytes\n", n);
1.20 claudio 843: sc->bytes += n;
844: mainstats.slice_bytes += n;
845: if (UDP_MODE)
846: sc->udp_slice_pkts++;
1.1 djm 847: }
848:
1.20 claudio 849: static void
1.25 haesbaer 850: client_init(struct addrinfo *aitop, int nconn, struct statctx *udp_sc,
851: struct addrinfo *aib)
1.1 djm 852: {
1.20 claudio 853: struct statctx *sc;
854: struct addrinfo *ai;
1.14 claudio 855: char tmp[128];
856: int i, r, sock;
1.1 djm 857:
1.20 claudio 858: sc = udp_sc;
1.4 henning 859: for (i = 0; i < nconn; i++) {
860: for (sock = -1, ai = aitop; ai != NULL; ai = ai->ai_next) {
861: saddr_ntop(ai->ai_addr, ai->ai_addrlen, tmp,
862: sizeof(tmp));
1.20 claudio 863: if (ptb->vflag && i == 0)
1.4 henning 864: fprintf(stderr, "Trying %s\n", tmp);
865: if ((sock = socket(ai->ai_family, ai->ai_socktype,
866: ai->ai_protocol)) == -1) {
867: if (ai->ai_next == NULL)
868: err(1, "socket");
1.20 claudio 869: if (ptb->vflag)
1.4 henning 870: warn("socket");
871: continue;
872: }
1.25 haesbaer 873: if (aib != NULL) {
874: saddr_ntop(aib->ai_addr, aib->ai_addrlen,
875: tmp, sizeof(tmp));
876: if (ptb->vflag)
877: fprintf(stderr,
878: "Try to bind to %s\n", tmp);
879: if (bind(sock, (struct sockaddr *)aib->ai_addr,
880: aib->ai_addrlen) == -1)
881: err(1, "bind");
882: }
1.24 haesbaer 883: if (ptb->Tflag != -1 && ai->ai_family == AF_INET) {
884: if (setsockopt(sock, IPPROTO_IP, IP_TOS,
885: &ptb->Tflag, sizeof(ptb->Tflag)))
886: err(1, "setsockopt IP_TOS");
887: }
888: if (ptb->Tflag != -1 && ai->ai_family == AF_INET6) {
889: if (setsockopt(sock, IPPROTO_IPV6, IPV6_TCLASS,
890: &ptb->Tflag, sizeof(ptb->Tflag)))
891: err(1, "setsockopt IPV6_TCLASS");
892: }
1.22 mikeb 893: if (ptb->Vflag) {
894: if (setsockopt(sock, SOL_SOCKET, SO_RTABLE,
895: &ptb->Vflag, sizeof(ptb->Vflag)) == -1) {
896: if (errno == ENOPROTOOPT)
897: warn("set rtable");
898: else
899: err(1, "setsockopt SO_RTABLE");
900: }
901: }
1.20 claudio 902: if (ptb->Sflag) {
1.4 henning 903: if (setsockopt(sock, SOL_SOCKET, SO_SNDBUF,
1.20 claudio 904: &ptb->Sflag, sizeof(ptb->Sflag)) == -1)
1.4 henning 905: warn("set TCP send buffer size");
906: }
907: if (connect(sock, ai->ai_addr, ai->ai_addrlen) != 0) {
908: if (ai->ai_next == NULL)
909: err(1, "connect");
1.20 claudio 910: if (ptb->vflag)
1.4 henning 911: warn("connect");
912: close(sock);
913: sock = -1;
914: continue;
915: }
916: break;
1.1 djm 917: }
1.4 henning 918: if (sock == -1)
919: errx(1, "No host found");
920: if ((r = fcntl(sock, F_GETFL, 0)) == -1)
921: err(1, "fcntl(F_GETFL)");
922: r |= O_NONBLOCK;
923: if (fcntl(sock, F_SETFL, r) == -1)
924: err(1, "fcntl(F_SETFL, O_NONBLOCK)");
1.20 claudio 925: /* Alloc and prepare stats */
926: if (TCP_MODE) {
927: if ((sc = calloc(1, sizeof(*sc))) == NULL)
928: err(1, "calloc");
929: }
930: sc->fd = sock;
931: stats_prepare(sc);
932: event_set(&sc->ev, sc->fd, EV_WRITE | EV_PERSIST,
933: client_handle_sc, sc);
934: event_add(&sc->ev, NULL);
935: TAILQ_INSERT_TAIL(&sc_queue, sc, entry);
936: mainstats.nconns++;
937: set_slice_timer(mainstats.nconns > 0);
1.14 claudio 938: }
939: freeaddrinfo(aitop);
1.35 ! haesbaer 940: if (aib != NULL)
! 941: freeaddrinfo(aib);
1.14 claudio 942:
1.20 claudio 943: if (ptb->vflag && nconn > 1)
1.29 haesbaer 944: fprintf(stderr, "%d connections established\n",
945: mainstats.nconns);
1.14 claudio 946: }
947:
1.24 haesbaer 948: static int
949: map_tos(char *s, int *val)
950: {
951: /* DiffServ Codepoints and other TOS mappings */
952: const struct toskeywords {
953: const char *keyword;
954: int val;
955: } *t, toskeywords[] = {
956: { "af11", IPTOS_DSCP_AF11 },
957: { "af12", IPTOS_DSCP_AF12 },
958: { "af13", IPTOS_DSCP_AF13 },
959: { "af21", IPTOS_DSCP_AF21 },
960: { "af22", IPTOS_DSCP_AF22 },
961: { "af23", IPTOS_DSCP_AF23 },
962: { "af31", IPTOS_DSCP_AF31 },
963: { "af32", IPTOS_DSCP_AF32 },
964: { "af33", IPTOS_DSCP_AF33 },
965: { "af41", IPTOS_DSCP_AF41 },
966: { "af42", IPTOS_DSCP_AF42 },
967: { "af43", IPTOS_DSCP_AF43 },
968: { "critical", IPTOS_PREC_CRITIC_ECP },
969: { "cs0", IPTOS_DSCP_CS0 },
970: { "cs1", IPTOS_DSCP_CS1 },
971: { "cs2", IPTOS_DSCP_CS2 },
972: { "cs3", IPTOS_DSCP_CS3 },
973: { "cs4", IPTOS_DSCP_CS4 },
974: { "cs5", IPTOS_DSCP_CS5 },
975: { "cs6", IPTOS_DSCP_CS6 },
976: { "cs7", IPTOS_DSCP_CS7 },
977: { "ef", IPTOS_DSCP_EF },
978: { "inetcontrol", IPTOS_PREC_INTERNETCONTROL },
979: { "lowdelay", IPTOS_LOWDELAY },
980: { "netcontrol", IPTOS_PREC_NETCONTROL },
981: { "reliability", IPTOS_RELIABILITY },
982: { "throughput", IPTOS_THROUGHPUT },
983: { NULL, -1 },
984: };
985:
986: for (t = toskeywords; t->keyword != NULL; t++) {
987: if (strcmp(s, t->keyword) == 0) {
988: *val = t->val;
989: return (1);
990: }
991: }
992:
993: return (0);
994: }
995:
1.30 henning 996: static void
997: quit(int sig, short event, void *arg)
998: {
999: exit(0);
1000: }
1001:
1.1 djm 1002: int
1003: main(int argc, char **argv)
1004: {
1005: extern int optind;
1006: extern char *optarg;
1.30 henning 1007: struct timeval tv;
1008: unsigned int secs;
1.1 djm 1009:
1010: char kerr[_POSIX2_LINE_MAX], *tmp;
1.25 haesbaer 1011: struct addrinfo *aitop, *aib, hints;
1.1 djm 1012: const char *errstr;
1.11 claudio 1013: struct rlimit rl;
1.20 claudio 1014: int ch, herr, nconn;
1.12 deraadt 1015: struct nlist nl[] = { { "_tcbtable" }, { "" } };
1.25 haesbaer 1016: const char *host = NULL, *port = DEFAULT_PORT, *srcbind = NULL;
1.30 henning 1017: struct event ev_sigint, ev_sigterm, ev_sighup, ev_progtimer;
1.20 claudio 1018: struct statctx *udp_sc = NULL;
1.1 djm 1019:
1.20 claudio 1020: /* Init world */
1.26 haesbaer 1021: setlinebuf(stdout);
1.20 claudio 1022: ptb = &tcpbench;
1023: ptb->dummybuf_len = 0;
1024: ptb->Sflag = ptb->sflag = ptb->vflag = ptb->Vflag = 0;
1025: ptb->kvmh = NULL;
1026: ptb->kvars = NULL;
1027: ptb->rflag = DEFAULT_STATS_INTERVAL;
1.24 haesbaer 1028: ptb->Tflag = -1;
1.20 claudio 1029: nconn = 1;
1.25 haesbaer 1030: aib = NULL;
1.30 henning 1031: secs = 0;
1.1 djm 1032:
1.30 henning 1033: while ((ch = getopt(argc, argv, "b:B:hlk:n:p:r:sS:t:T:uvV:")) != -1) {
1.1 djm 1034: switch (ch) {
1.25 haesbaer 1035: case 'b':
1036: srcbind = optarg;
1037: break;
1.1 djm 1038: case 'l':
1039: list_kvars();
1040: exit(0);
1041: case 'k':
1042: if ((tmp = strdup(optarg)) == NULL)
1043: errx(1, "strdup");
1.20 claudio 1044: ptb->kvars = check_prepare_kvars(tmp);
1.1 djm 1045: free(tmp);
1046: break;
1047: case 'r':
1.20 claudio 1048: ptb->rflag = strtonum(optarg, 0, 60 * 60 * 24 * 1000,
1.1 djm 1049: &errstr);
1050: if (errstr != NULL)
1051: errx(1, "statistics interval is %s: %s",
1052: errstr, optarg);
1053: break;
1054: case 'p':
1055: port = optarg;
1056: break;
1057: case 's':
1.20 claudio 1058: ptb->sflag = 1;
1.1 djm 1059: break;
1060: case 'S':
1.20 claudio 1061: ptb->Sflag = strtonum(optarg, 0, 1024*1024*1024,
1.1 djm 1062: &errstr);
1063: if (errstr != NULL)
1064: errx(1, "receive space interval is %s: %s",
1065: errstr, optarg);
1066: break;
1067: case 'B':
1.20 claudio 1068: ptb->dummybuf_len = strtonum(optarg, 0, 1024*1024*1024,
1.1 djm 1069: &errstr);
1070: if (errstr != NULL)
1071: errx(1, "read/write buffer size is %s: %s",
1072: errstr, optarg);
1073: break;
1074: case 'v':
1.20 claudio 1075: ptb->vflag++;
1.9 claudio 1076: break;
1077: case 'V':
1.20 claudio 1078: ptb->Vflag = (unsigned int)strtonum(optarg, 0,
1.9 claudio 1079: RT_TABLEID_MAX, &errstr);
1080: if (errstr)
1.17 guenther 1081: errx(1, "rtable value is %s: %s",
1.9 claudio 1082: errstr, optarg);
1.1 djm 1083: break;
1.4 henning 1084: case 'n':
1085: nconn = strtonum(optarg, 0, 65535, &errstr);
1086: if (errstr != NULL)
1087: errx(1, "number of connections is %s: %s",
1088: errstr, optarg);
1089: break;
1.20 claudio 1090: case 'u':
1091: ptb->uflag = 1;
1.24 haesbaer 1092: break;
1093: case 'T':
1094: if (map_tos(optarg, &ptb->Tflag))
1095: break;
1096: errstr = NULL;
1097: if (strlen(optarg) > 1 && optarg[0] == '0' &&
1098: optarg[1] == 'x')
1099: ptb->Tflag = (int)strtol(optarg, NULL, 16);
1100: else
1101: ptb->Tflag = (int)strtonum(optarg, 0, 255,
1102: &errstr);
1103: if (ptb->Tflag == -1 || ptb->Tflag > 255 || errstr)
1104: errx(1, "illegal tos value %s", optarg);
1.20 claudio 1105: break;
1.30 henning 1106: case 't':
1107: secs = strtonum(optarg, 1, UINT_MAX, &errstr);
1108: if (errstr != NULL)
1109: errx(1, "secs is %s: %s",
1110: errstr, optarg);
1111: break;
1.1 djm 1112: case 'h':
1113: default:
1114: usage();
1115: }
1116: }
1117:
1118: argv += optind;
1119: argc -= optind;
1.20 claudio 1120: if ((argc != (ptb->sflag ? 0 : 1)) ||
1121: (UDP_MODE && (ptb->kvars || nconn != 1)))
1.1 djm 1122: usage();
1.4 henning 1123:
1.20 claudio 1124: if (!ptb->sflag)
1.1 djm 1125: host = argv[0];
1.20 claudio 1126: /*
1127: * Rationale,
1128: * If TCP, use a big buffer with big reads/writes.
1129: * If UDP, use a big buffer in server and a buffer the size of a
1130: * ethernet packet.
1131: */
1132: if (!ptb->dummybuf_len) {
1133: if (ptb->sflag || TCP_MODE)
1134: ptb->dummybuf_len = DEFAULT_BUF;
1135: else
1136: ptb->dummybuf_len = DEFAULT_UDP_PKT;
1137: }
1.1 djm 1138:
1.13 claudio 1139: bzero(&hints, sizeof(hints));
1.25 haesbaer 1140: if (UDP_MODE) {
1.20 claudio 1141: hints.ai_socktype = SOCK_DGRAM;
1.25 haesbaer 1142: hints.ai_protocol = IPPROTO_UDP;
1.27 haesbaer 1143: } else {
1.20 claudio 1144: hints.ai_socktype = SOCK_STREAM;
1.25 haesbaer 1145: hints.ai_protocol = IPPROTO_TCP;
1146: }
1.20 claudio 1147: if (ptb->sflag)
1.4 henning 1148: hints.ai_flags = AI_PASSIVE;
1.25 haesbaer 1149: if (srcbind != NULL) {
1150: hints.ai_flags |= AI_NUMERICHOST;
1151: herr = getaddrinfo(srcbind, NULL, &hints, &aib);
1152: hints.ai_flags &= ~AI_NUMERICHOST;
1153: if (herr != 0) {
1154: if (herr == EAI_SYSTEM)
1155: err(1, "getaddrinfo");
1156: else
1157: errx(1, "getaddrinfo: %s", gai_strerror(herr));
1158: }
1159: }
1.13 claudio 1160: if ((herr = getaddrinfo(host, port, &hints, &aitop)) != 0) {
1161: if (herr == EAI_SYSTEM)
1162: err(1, "getaddrinfo");
1163: else
1164: errx(1, "getaddrinfo: %s", gai_strerror(herr));
1.1 djm 1165: }
1.20 claudio 1166: if (ptb->kvars) {
1167: if ((ptb->kvmh = kvm_openfiles(NULL, NULL, NULL,
1.1 djm 1168: O_RDONLY, kerr)) == NULL)
1169: errx(1, "kvm_open: %s", kerr);
1170: drop_gid();
1.20 claudio 1171: if (kvm_nlist(ptb->kvmh, nl) < 0 || nl[0].n_type == 0)
1.1 djm 1172: errx(1, "kvm: no namelist");
1.20 claudio 1173: ptb->ktcbtab = nl[0].n_value;
1.1 djm 1174: } else
1175: drop_gid();
1176:
1.11 claudio 1177: if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
1178: err(1, "getrlimit");
1179: if (rl.rlim_cur < MAX_FD)
1180: rl.rlim_cur = MAX_FD;
1181: if (setrlimit(RLIMIT_NOFILE, &rl))
1182: err(1, "setrlimit");
1183: if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
1184: err(1, "getrlimit");
1185:
1.20 claudio 1186: /* Init world */
1187: TAILQ_INIT(&sc_queue);
1188: if ((ptb->dummybuf = malloc(ptb->dummybuf_len)) == NULL)
1189: err(1, "malloc");
1190: arc4random_buf(ptb->dummybuf, ptb->dummybuf_len);
1191:
1192: /* Setup libevent and signals */
1193: event_init();
1194: signal_set(&ev_sigterm, SIGTERM, signal_handler, NULL);
1195: signal_set(&ev_sighup, SIGHUP, signal_handler, NULL);
1196: signal_set(&ev_sigint, SIGINT, signal_handler, NULL);
1197: signal_add(&ev_sigint, NULL);
1198: signal_add(&ev_sigterm, NULL);
1199: signal_add(&ev_sighup, NULL);
1200: signal(SIGPIPE, SIG_IGN);
1201:
1.27 haesbaer 1202: if (UDP_MODE) {
1203: if ((udp_sc = calloc(1, sizeof(*udp_sc))) == NULL)
1204: err(1, "calloc");
1205: udp_sc->fd = -1;
1206: stats_prepare(udp_sc);
1207: evtimer_set(&mainstats.timer, udp_process_slice, udp_sc);
1208: } else {
1.20 claudio 1209: print_tcp_header();
1210: evtimer_set(&mainstats.timer, tcp_process_slice, NULL);
1.27 haesbaer 1211: }
1.20 claudio 1212:
1.27 haesbaer 1213: if (ptb->sflag)
1.20 claudio 1214: server_init(aitop, udp_sc);
1.30 henning 1215: else {
1216: if (secs > 0) {
1217: timerclear(&tv);
1218: tv.tv_sec = secs + 1;
1219: evtimer_set(&ev_progtimer, quit, NULL);
1220: evtimer_add(&ev_progtimer, &tv);
1221: }
1.25 haesbaer 1222: client_init(aitop, nconn, udp_sc, aib);
1.30 henning 1223: }
1.20 claudio 1224:
1225: /* libevent main loop*/
1226: event_dispatch();
1.1 djm 1227:
1.20 claudio 1228: return (0);
1.1 djm 1229: }
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