Annotation of src/usr.bin/tcpbench/tcpbench.c, Revision 1.40
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: int Sflag; /* Socket buffer size (tcp mode) */
65: u_int rflag; /* Report rate (ms) */
66: int sflag; /* True if server */
1.24 haesbaer 67: int Tflag; /* ToS if != -1 */
1.20 claudio 68: int vflag; /* Verbose */
69: int uflag; /* UDP mode */
70: kvm_t *kvmh; /* Kvm handler */
71: char **kvars; /* Kvm enabled vars */
72: u_long ktcbtab; /* Ktcb */
73: char *dummybuf; /* IO buffer */
74: size_t dummybuf_len; /* IO buffer len */
75: } tcpbench, *ptb;
1.1 djm 76:
1.33 haesbaer 77: struct tcpservsock {
78: struct event ev;
79: struct event evt;
80: int fd;
81: };
82:
1.20 claudio 83: /* stats for a single tcp connection, udp uses only one */
1.1 djm 84: struct statctx {
1.20 claudio 85: TAILQ_ENTRY(statctx) entry;
1.11 claudio 86: struct timeval t_start, t_last;
1.1 djm 87: unsigned long long bytes;
1.20 claudio 88: int fd;
89: char *buf;
90: size_t buflen;
91: struct event ev;
92: /* TCP only */
1.33 haesbaer 93: struct tcpservsock *tcp_ts;
1.20 claudio 94: u_long tcp_tcbaddr;
95: /* UDP only */
96: u_long udp_slice_pkts;
1.1 djm 97: };
98:
1.20 claudio 99: static void signal_handler(int, short, void *);
100: static void saddr_ntop(const struct sockaddr *, socklen_t, char *, size_t);
101: static void drop_gid(void);
102: static void set_slice_timer(int);
103: static void print_tcp_header(void);
104: static void kget(u_long, void *, size_t);
105: static u_long kfind_tcb(int);
106: static void kupdate_stats(u_long, struct inpcb *, struct tcpcb *,
107: struct socket *);
108: static void list_kvars(void);
109: static void check_kvar(const char *);
110: static char ** check_prepare_kvars(char *);
111: static void stats_prepare(struct statctx *);
112: static void tcp_stats_display(unsigned long long, long double, float,
113: struct statctx *, struct inpcb *, struct tcpcb *, struct socket *);
114: static void tcp_process_slice(int, short, void *);
115: static void tcp_server_handle_sc(int, short, void *);
116: static void tcp_server_accept(int, short, void *);
117: static void server_init(struct addrinfo *, struct statctx *);
118: static void client_handle_sc(int, short, void *);
1.25 haesbaer 119: static void client_init(struct addrinfo *, int, struct statctx *,
120: struct addrinfo *);
1.20 claudio 121: static int clock_gettime_tv(clockid_t, struct timeval *);
122: static void udp_server_handle_sc(int, short, void *);
123: static void udp_process_slice(int, short, void *);
1.24 haesbaer 124: static int map_tos(char *, int *);
1.11 claudio 125: /*
126: * We account the mainstats here, that is the stats
127: * for all connections, all variables starting with slice
128: * are used to account information for the timeslice
129: * between each output. Peak variables record the highest
130: * between all slices so far.
131: */
132: static struct {
133: unsigned long long slice_bytes; /* bytes for last slice */
134: long double peak_mbps; /* peak mbps so far */
135: int nconns; /* connected clients */
1.20 claudio 136: struct event timer; /* process timer */
1.11 claudio 137: } mainstats;
138:
1.20 claudio 139: /* When adding variables, also add to tcp_stats_display() */
1.1 djm 140: static const char *allowed_kvars[] = {
141: "inpcb.inp_flags",
142: "sockb.so_rcv.sb_cc",
1.26 haesbaer 143: "sockb.so_rcv.sb_hiwat",
1.19 claudio 144: "sockb.so_rcv.sb_wat",
1.1 djm 145: "sockb.so_snd.sb_cc",
1.26 haesbaer 146: "sockb.so_snd.sb_hiwat",
1.19 claudio 147: "sockb.so_snd.sb_wat",
1.26 haesbaer 148: "tcpcb.last_ack_sent",
149: "tcpcb.max_sndwnd",
150: "tcpcb.rcv_adv",
151: "tcpcb.rcv_nxt",
152: "tcpcb.rcv_scale",
153: "tcpcb.rcv_wnd",
154: "tcpcb.rfbuf_cnt",
155: "tcpcb.rfbuf_ts",
156: "tcpcb.snd_cwnd",
157: "tcpcb.snd_max",
158: "tcpcb.snd_nxt",
159: "tcpcb.snd_scale",
160: "tcpcb.snd_ssthresh",
1.1 djm 161: "tcpcb.snd_una",
162: "tcpcb.snd_wl1",
163: "tcpcb.snd_wl2",
164: "tcpcb.snd_wnd",
165: "tcpcb.t_rcvtime",
1.26 haesbaer 166: "tcpcb.t_rtseq",
167: "tcpcb.t_rttmin",
1.1 djm 168: "tcpcb.t_rtttime",
1.26 haesbaer 169: "tcpcb.t_rttvar",
1.1 djm 170: "tcpcb.t_srtt",
1.26 haesbaer 171: "tcpcb.ts_recent",
1.19 claudio 172: "tcpcb.ts_recent_age",
1.1 djm 173: NULL
174: };
175:
1.20 claudio 176: TAILQ_HEAD(, statctx) sc_queue;
1.1 djm 177:
178: static void __dead
179: usage(void)
180: {
181: fprintf(stderr,
1.6 jmc 182: "usage: tcpbench -l\n"
1.25 haesbaer 183: " tcpbench [-uv] [-B buf] [-b addr] [-k kvars] [-n connections]\n"
184: " [-p port] [-r interval] [-S space] [-T toskeyword]\n"
1.30 henning 185: " [-t secs] [-V rtable] hostname\n"
1.21 jmc 186: " tcpbench -s [-uv] [-B buf] [-k kvars] [-p port]\n"
1.24 haesbaer 187: " [-r interval] [-S space] [-T toskeyword] [-V rtable]\n");
1.1 djm 188: exit(1);
189: }
190:
191: static void
1.20 claudio 192: signal_handler(int sig, short event, void *bula)
193: {
194: /*
195: * signal handler rules don't apply, libevent decouples for us
196: */
197: switch (sig) {
198: case SIGINT:
199: case SIGTERM:
200: case SIGHUP:
201: warnx("Terminated by signal %d", sig);
202: exit(0);
203: break; /* NOTREACHED */
204: default:
205: errx(1, "unexpected signal %d", sig);
206: break; /* NOTREACHED */
207: }
208: }
209:
210: static void
1.1 djm 211: saddr_ntop(const struct sockaddr *addr, socklen_t alen, char *buf, size_t len)
212: {
213: char hbuf[NI_MAXHOST], pbuf[NI_MAXSERV];
214: int herr;
215:
1.3 djm 216: if ((herr = getnameinfo(addr, alen, hbuf, sizeof(hbuf),
217: pbuf, sizeof(pbuf), NI_NUMERICHOST|NI_NUMERICSERV)) != 0) {
1.1 djm 218: if (herr == EAI_SYSTEM)
219: err(1, "getnameinfo");
220: else
221: errx(1, "getnameinfo: %s", gai_strerror(herr));
222: }
223: snprintf(buf, len, "[%s]:%s", hbuf, pbuf);
224: }
225:
226: static void
1.20 claudio 227: drop_gid(void)
228: {
229: gid_t gid;
230:
231: gid = getgid();
232: if (setresgid(gid, gid, gid) == -1)
233: err(1, "setresgid");
234: }
235:
236: static void
237: set_slice_timer(int on)
1.11 claudio 238: {
1.20 claudio 239: struct timeval tv;
1.11 claudio 240:
1.20 claudio 241: if (ptb->rflag == 0)
1.11 claudio 242: return;
243:
1.20 claudio 244: if (on) {
245: if (evtimer_pending(&mainstats.timer, NULL))
246: return;
247: timerclear(&tv);
248: /* XXX Is there a better way to do this ? */
249: tv.tv_sec = ptb->rflag / 1000;
250: tv.tv_usec = (ptb->rflag % 1000) * 1000;
251:
252: evtimer_add(&mainstats.timer, &tv);
253: } else if (evtimer_pending(&mainstats.timer, NULL))
254: evtimer_del(&mainstats.timer);
255: }
1.11 claudio 256:
1.20 claudio 257: static int
258: clock_gettime_tv(clockid_t clock_id, struct timeval *tv)
259: {
260: struct timespec ts;
261:
262: if (clock_gettime(clock_id, &ts) == -1)
263: return (-1);
264:
265: TIMESPEC_TO_TIMEVAL(tv, &ts);
266:
267: return (0);
1.11 claudio 268: }
269:
270: static void
1.20 claudio 271: print_tcp_header(void)
1.11 claudio 272: {
273: char **kv;
1.20 claudio 274:
1.11 claudio 275: printf("%12s %14s %12s %8s ", "elapsed_ms", "bytes", "mbps",
276: "bwidth");
1.20 claudio 277: for (kv = ptb->kvars; ptb->kvars != NULL && *kv != NULL; kv++)
278: printf("%s%s", kv != ptb->kvars ? "," : "", *kv);
1.11 claudio 279: printf("\n");
280: }
281:
282: static void
1.20 claudio 283: kget(u_long addr, void *buf, size_t size)
1.1 djm 284: {
1.20 claudio 285: if (kvm_read(ptb->kvmh, addr, buf, size) != (ssize_t)size)
286: errx(1, "kvm_read: %s", kvm_geterr(ptb->kvmh));
1.1 djm 287: }
288:
289: static u_long
1.20 claudio 290: kfind_tcb(int sock)
1.1 djm 291: {
292: struct inpcbtable tcbtab;
1.40 ! tedu 293: struct inpcb *next, *prev;
1.1 djm 294: struct inpcb inpcb;
295: struct tcpcb tcpcb;
296:
297: struct sockaddr_storage me, them;
298: socklen_t melen, themlen;
299: struct sockaddr_in *in4;
300: struct sockaddr_in6 *in6;
301: char tmp1[64], tmp2[64];
1.11 claudio 302: int nretry;
1.1 djm 303:
1.11 claudio 304: nretry = 10;
1.1 djm 305: melen = themlen = sizeof(struct sockaddr_storage);
306: if (getsockname(sock, (struct sockaddr *)&me, &melen) == -1)
307: err(1, "getsockname");
308: if (getpeername(sock, (struct sockaddr *)&them, &themlen) == -1)
309: err(1, "getpeername");
310: if (me.ss_family != them.ss_family)
311: errx(1, "%s: me.ss_family != them.ss_family", __func__);
312: if (me.ss_family != AF_INET && me.ss_family != AF_INET6)
313: errx(1, "%s: unknown socket family", __func__);
1.20 claudio 314: if (ptb->vflag >= 2) {
1.1 djm 315: saddr_ntop((struct sockaddr *)&me, me.ss_len,
316: tmp1, sizeof(tmp1));
317: saddr_ntop((struct sockaddr *)&them, them.ss_len,
318: tmp2, sizeof(tmp2));
319: fprintf(stderr, "Our socket local %s remote %s\n", tmp1, tmp2);
320: }
1.20 claudio 321: if (ptb->vflag >= 2)
322: fprintf(stderr, "Using PCB table at %lu\n", ptb->ktcbtab);
1.11 claudio 323: retry:
1.20 claudio 324: kget(ptb->ktcbtab, &tcbtab, sizeof(tcbtab));
1.40 ! tedu 325: prev = NULL;
1.39 krw 326: next = TAILQ_FIRST(&tcbtab.inpt_queue);
1.1 djm 327:
1.20 claudio 328: if (ptb->vflag >= 2)
1.40 ! tedu 329: fprintf(stderr, "PCB start at %p\n", next);
! 330: while (next != NULL) {
1.20 claudio 331: if (ptb->vflag >= 2)
1.1 djm 332: fprintf(stderr, "Checking PCB %p\n", next);
1.20 claudio 333: kget((u_long)next, &inpcb, sizeof(inpcb));
1.1 djm 334: prev = next;
1.39 krw 335: next = TAILQ_NEXT(&inpcb, inp_queue);
1.1 djm 336:
337: if (me.ss_family == AF_INET) {
338: if ((inpcb.inp_flags & INP_IPV6) != 0) {
1.20 claudio 339: if (ptb->vflag >= 2)
1.1 djm 340: fprintf(stderr, "Skip: INP_IPV6");
341: continue;
342: }
1.20 claudio 343: if (ptb->vflag >= 2) {
1.1 djm 344: inet_ntop(AF_INET, &inpcb.inp_laddr,
345: tmp1, sizeof(tmp1));
346: inet_ntop(AF_INET, &inpcb.inp_faddr,
347: tmp2, sizeof(tmp2));
348: fprintf(stderr, "PCB %p local: [%s]:%d "
349: "remote: [%s]:%d\n", prev,
350: tmp1, inpcb.inp_lport,
351: tmp2, inpcb.inp_fport);
352: }
353: in4 = (struct sockaddr_in *)&me;
354: if (memcmp(&in4->sin_addr, &inpcb.inp_laddr,
355: sizeof(struct in_addr)) != 0 ||
356: in4->sin_port != inpcb.inp_lport)
357: continue;
358: in4 = (struct sockaddr_in *)&them;
359: if (memcmp(&in4->sin_addr, &inpcb.inp_faddr,
360: sizeof(struct in_addr)) != 0 ||
361: in4->sin_port != inpcb.inp_fport)
362: continue;
363: } else {
364: if ((inpcb.inp_flags & INP_IPV6) == 0)
365: continue;
1.20 claudio 366: if (ptb->vflag >= 2) {
1.1 djm 367: inet_ntop(AF_INET6, &inpcb.inp_laddr6,
368: tmp1, sizeof(tmp1));
369: inet_ntop(AF_INET6, &inpcb.inp_faddr6,
370: tmp2, sizeof(tmp2));
371: fprintf(stderr, "PCB %p local: [%s]:%d "
372: "remote: [%s]:%d\n", prev,
373: tmp1, inpcb.inp_lport,
374: tmp2, inpcb.inp_fport);
375: }
376: in6 = (struct sockaddr_in6 *)&me;
377: if (memcmp(&in6->sin6_addr, &inpcb.inp_laddr6,
378: sizeof(struct in6_addr)) != 0 ||
379: in6->sin6_port != inpcb.inp_lport)
380: continue;
381: in6 = (struct sockaddr_in6 *)&them;
382: if (memcmp(&in6->sin6_addr, &inpcb.inp_faddr6,
383: sizeof(struct in6_addr)) != 0 ||
384: in6->sin6_port != inpcb.inp_fport)
385: continue;
386: }
1.20 claudio 387: kget((u_long)inpcb.inp_ppcb, &tcpcb, sizeof(tcpcb));
1.1 djm 388: if (tcpcb.t_state != TCPS_ESTABLISHED) {
1.20 claudio 389: if (ptb->vflag >= 2)
1.1 djm 390: fprintf(stderr, "Not established\n");
391: continue;
392: }
1.20 claudio 393: if (ptb->vflag >= 2)
1.1 djm 394: fprintf(stderr, "Found PCB at %p\n", prev);
1.20 claudio 395: return ((u_long)prev);
1.1 djm 396: }
397:
398: errx(1, "No matching PCB found");
399: }
400:
401: static void
1.20 claudio 402: kupdate_stats(u_long tcbaddr, struct inpcb *inpcb,
403: struct tcpcb *tcpcb, struct socket *sockb)
1.1 djm 404: {
1.20 claudio 405: kget(tcbaddr, inpcb, sizeof(*inpcb));
406: kget((u_long)inpcb->inp_ppcb, tcpcb, sizeof(*tcpcb));
407: kget((u_long)inpcb->inp_socket, sockb, sizeof(*sockb));
1.1 djm 408: }
409:
410: static void
411: check_kvar(const char *var)
412: {
1.16 deraadt 413: u_int i;
1.1 djm 414:
415: for (i = 0; allowed_kvars[i] != NULL; i++)
416: if (strcmp(allowed_kvars[i], var) == 0)
417: return;
418: errx(1, "Unrecognised kvar: %s", var);
419: }
420:
421: static void
422: list_kvars(void)
423: {
1.16 deraadt 424: u_int i;
1.1 djm 425:
1.26 haesbaer 426: printf("Supported kernel variables:\n");
1.1 djm 427: for (i = 0; allowed_kvars[i] != NULL; i++)
1.26 haesbaer 428: printf("\t%s\n", allowed_kvars[i]);
1.1 djm 429: }
430:
431: static char **
432: check_prepare_kvars(char *list)
433: {
434: char *item, **ret = NULL;
1.16 deraadt 435: u_int n = 0;
1.1 djm 436:
437: while ((item = strsep(&list, ", \t\n")) != NULL) {
438: check_kvar(item);
439: if ((ret = realloc(ret, sizeof(*ret) * (++n + 1))) == NULL)
440: errx(1, "realloc(kvars)");
441: if ((ret[n - 1] = strdup(item)) == NULL)
442: errx(1, "strdup");
443: ret[n] = NULL;
444: }
1.20 claudio 445: return (ret);
1.1 djm 446: }
447:
448: static void
1.20 claudio 449: stats_prepare(struct statctx *sc)
1.1 djm 450: {
1.20 claudio 451: sc->buf = ptb->dummybuf;
452: sc->buflen = ptb->dummybuf_len;
453:
454: if (ptb->kvars)
455: sc->tcp_tcbaddr = kfind_tcb(sc->fd);
456: if (clock_gettime_tv(CLOCK_MONOTONIC, &sc->t_start) == -1)
457: err(1, "clock_gettime_tv");
1.1 djm 458: sc->t_last = sc->t_start;
459:
460: }
461:
462: static void
1.20 claudio 463: tcp_stats_display(unsigned long long total_elapsed, long double mbps,
1.11 claudio 464: float bwperc, struct statctx *sc, struct inpcb *inpcb,
465: struct tcpcb *tcpcb, struct socket *sockb)
466: {
467: int j;
468:
469: printf("%12llu %14llu %12.3Lf %7.2f%% ", total_elapsed, sc->bytes,
470: mbps, bwperc);
471:
1.20 claudio 472: if (ptb->kvars != NULL) {
473: kupdate_stats(sc->tcp_tcbaddr, inpcb, tcpcb,
1.11 claudio 474: sockb);
1.1 djm 475:
1.20 claudio 476: for (j = 0; ptb->kvars[j] != NULL; j++) {
1.11 claudio 477: #define S(a) #a
478: #define P(b, v, f) \
1.20 claudio 479: if (strcmp(ptb->kvars[j], S(b.v)) == 0) { \
1.11 claudio 480: printf("%s"f, j > 0 ? "," : "", b->v); \
481: continue; \
482: }
483: P(inpcb, inp_flags, "0x%08x")
484: P(sockb, so_rcv.sb_cc, "%lu")
1.26 haesbaer 485: P(sockb, so_rcv.sb_hiwat, "%lu")
1.19 claudio 486: P(sockb, so_rcv.sb_wat, "%lu")
1.11 claudio 487: P(sockb, so_snd.sb_cc, "%lu")
1.26 haesbaer 488: P(sockb, so_snd.sb_hiwat, "%lu")
1.19 claudio 489: P(sockb, so_snd.sb_wat, "%lu")
1.26 haesbaer 490: P(tcpcb, last_ack_sent, "%u")
491: P(tcpcb, max_sndwnd, "%lu")
492: P(tcpcb, rcv_adv, "%u")
493: P(tcpcb, rcv_nxt, "%u")
494: P(tcpcb, rcv_scale, "%u")
495: P(tcpcb, rcv_wnd, "%lu")
496: P(tcpcb, rfbuf_cnt, "%u")
497: P(tcpcb, rfbuf_ts, "%u")
498: P(tcpcb, snd_cwnd, "%lu")
499: P(tcpcb, snd_max, "%u")
500: P(tcpcb, snd_nxt, "%u")
501: P(tcpcb, snd_scale, "%u")
502: P(tcpcb, snd_ssthresh, "%lu")
1.11 claudio 503: P(tcpcb, snd_una, "%u")
504: P(tcpcb, snd_wl1, "%u")
505: P(tcpcb, snd_wl2, "%u")
506: P(tcpcb, snd_wnd, "%lu")
507: P(tcpcb, t_rcvtime, "%u")
1.26 haesbaer 508: P(tcpcb, t_rtseq, "%u")
509: P(tcpcb, t_rttmin, "%hu")
1.11 claudio 510: P(tcpcb, t_rtttime, "%u")
1.26 haesbaer 511: P(tcpcb, t_rttvar, "%hu")
1.11 claudio 512: P(tcpcb, t_srtt, "%hu")
1.26 haesbaer 513: P(tcpcb, ts_recent, "%u")
1.19 claudio 514: P(tcpcb, ts_recent_age, "%u")
1.11 claudio 515: #undef S
1.1 djm 516: #undef P
517: }
518: }
519: printf("\n");
520: }
521:
522: static void
1.20 claudio 523: tcp_process_slice(int fd, short event, void *bula)
1.1 djm 524: {
1.11 claudio 525: unsigned long long total_elapsed, since_last;
526: long double mbps, slice_mbps = 0;
527: float bwperc;
1.20 claudio 528: struct statctx *sc;
1.11 claudio 529: struct timeval t_cur, t_diff;
530: struct inpcb inpcb;
531: struct tcpcb tcpcb;
532: struct socket sockb;
533:
1.20 claudio 534: TAILQ_FOREACH(sc, &sc_queue, entry) {
535: if (clock_gettime_tv(CLOCK_MONOTONIC, &t_cur) == -1)
536: err(1, "clock_gettime_tv");
537: if (ptb->kvars != NULL) /* process kernel stats */
538: kupdate_stats(sc->tcp_tcbaddr, &inpcb, &tcpcb,
1.11 claudio 539: &sockb);
1.20 claudio 540:
1.11 claudio 541: timersub(&t_cur, &sc->t_start, &t_diff);
542: total_elapsed = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000;
543: timersub(&t_cur, &sc->t_last, &t_diff);
544: since_last = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000;
545: bwperc = (sc->bytes * 100.0) / mainstats.slice_bytes;
546: mbps = (sc->bytes * 8) / (since_last * 1000.0);
547: slice_mbps += mbps;
548:
1.20 claudio 549: tcp_stats_display(total_elapsed, mbps, bwperc, sc,
1.11 claudio 550: &inpcb, &tcpcb, &sockb);
551:
552: sc->t_last = t_cur;
553: sc->bytes = 0;
554: }
1.1 djm 555:
1.11 claudio 556: /* process stats for this slice */
557: if (slice_mbps > mainstats.peak_mbps)
558: mainstats.peak_mbps = slice_mbps;
1.20 claudio 559: printf("Conn: %3d Mbps: %12.3Lf Peak Mbps: %12.3Lf Avg Mbps: %12.3Lf\n",
560: mainstats.nconns, slice_mbps, mainstats.peak_mbps,
1.36 haesbaer 561: mainstats.nconns ? slice_mbps / mainstats.nconns : 0);
1.20 claudio 562: mainstats.slice_bytes = 0;
563:
564: set_slice_timer(mainstats.nconns > 0);
565: }
566:
567: static void
568: udp_process_slice(int fd, short event, void *v_sc)
569: {
570: struct statctx *sc = v_sc;
1.31 haesbaer 571: unsigned long long total_elapsed, since_last, pps;
572: long double slice_mbps;
1.20 claudio 573: struct timeval t_cur, t_diff;
574:
575: if (clock_gettime_tv(CLOCK_MONOTONIC, &t_cur) == -1)
576: err(1, "clock_gettime_tv");
577: /* Calculate pps */
578: timersub(&t_cur, &sc->t_start, &t_diff);
579: total_elapsed = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000;
580: timersub(&t_cur, &sc->t_last, &t_diff);
581: since_last = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000;
582: slice_mbps = (sc->bytes * 8) / (since_last * 1000.0);
583: pps = (sc->udp_slice_pkts * 1000) / since_last;
584: if (slice_mbps > mainstats.peak_mbps)
585: mainstats.peak_mbps = slice_mbps;
1.31 haesbaer 586: printf("Elapsed: %11llu Mbps: %11.3Lf Peak Mbps: %11.3Lf %s PPS: %7llu\n",
1.20 claudio 587: total_elapsed, slice_mbps, mainstats.peak_mbps,
588: ptb->sflag ? "Rx" : "Tx", pps);
589:
590: /* Clean up this slice time */
591: sc->t_last = t_cur;
592: sc->bytes = 0;
593: sc->udp_slice_pkts = 0;
594: set_slice_timer(1);
1.11 claudio 595: }
1.1 djm 596:
1.20 claudio 597: static void
598: udp_server_handle_sc(int fd, short event, void *v_sc)
1.11 claudio 599: {
600: ssize_t n;
1.20 claudio 601: struct statctx *sc = v_sc;
1.1 djm 602:
1.20 claudio 603: n = read(fd, ptb->dummybuf, ptb->dummybuf_len);
604: if (n == 0)
605: return;
606: else if (n == -1) {
1.34 haesbaer 607: if (errno != EINTR && errno != EWOULDBLOCK)
608: warn("fd %d read error", fd);
1.20 claudio 609: return;
610: }
1.11 claudio 611:
1.20 claudio 612: if (ptb->vflag >= 3)
613: fprintf(stderr, "read: %zd bytes\n", n);
614: /* If this was our first packet, start slice timer */
615: if (mainstats.peak_mbps == 0)
616: set_slice_timer(1);
617: /* Account packet */
618: sc->udp_slice_pkts++;
619: sc->bytes += n;
620: }
621:
622: static void
623: tcp_server_handle_sc(int fd, short event, void *v_sc)
624: {
625: struct statctx *sc = v_sc;
626: ssize_t n;
627:
628: n = read(sc->fd, sc->buf, sc->buflen);
629: if (n == -1) {
1.34 haesbaer 630: if (errno != EINTR && errno != EWOULDBLOCK)
631: warn("fd %d read error", sc->fd);
1.20 claudio 632: return;
633: } else if (n == 0) {
634: if (ptb->vflag)
635: fprintf(stderr, "%8d closed by remote end\n", sc->fd);
1.33 haesbaer 636:
637: TAILQ_REMOVE(&sc_queue, sc, entry);
638:
1.23 sthen 639: event_del(&sc->ev);
1.20 claudio 640: close(sc->fd);
1.33 haesbaer 641:
642: /* Some file descriptors are available again. */
643: if (evtimer_pending(&sc->tcp_ts->evt, NULL)) {
644: evtimer_del(&sc->tcp_ts->evt);
645: event_add(&sc->tcp_ts->ev, NULL);
646: }
647:
1.20 claudio 648: free(sc);
649: mainstats.nconns--;
650: return;
1.1 djm 651: }
1.20 claudio 652: if (ptb->vflag >= 3)
1.11 claudio 653: fprintf(stderr, "read: %zd bytes\n", n);
1.20 claudio 654: sc->bytes += n;
655: mainstats.slice_bytes += n;
656: }
1.11 claudio 657:
1.20 claudio 658: static void
1.33 haesbaer 659: tcp_server_accept(int fd, short event, void *arg)
1.20 claudio 660: {
1.33 haesbaer 661: struct tcpservsock *ts = arg;
1.20 claudio 662: int sock, r;
663: struct statctx *sc;
664: struct sockaddr_storage ss;
665: socklen_t sslen;
666: char tmp[128];
667:
668: sslen = sizeof(ss);
1.33 haesbaer 669:
670: event_add(&ts->ev, NULL);
671: if (event & EV_TIMEOUT)
672: return;
1.20 claudio 673: if ((sock = accept(fd, (struct sockaddr *)&ss, &sslen)) == -1) {
1.33 haesbaer 674: /*
675: * Pause accept if we are out of file descriptors, or
676: * libevent will haunt us here too.
677: */
678: if (errno == ENFILE || errno == EMFILE) {
679: struct timeval evtpause = { 1, 0 };
680:
681: event_del(&ts->ev);
682: evtimer_add(&ts->evt, &evtpause);
1.38 deraadt 683: } else if (errno != EWOULDBLOCK && errno != EINTR &&
684: errno != ECONNABORTED)
1.33 haesbaer 685: warn("accept");
1.20 claudio 686: return;
687: }
688: saddr_ntop((struct sockaddr *)&ss, sslen,
689: tmp, sizeof(tmp));
690: if ((r = fcntl(sock, F_GETFL, 0)) == -1)
691: err(1, "fcntl(F_GETFL)");
692: r |= O_NONBLOCK;
693: if (fcntl(sock, F_SETFL, r) == -1)
694: err(1, "fcntl(F_SETFL, O_NONBLOCK)");
1.24 haesbaer 695: if (ptb->Tflag != -1 && ss.ss_family == AF_INET) {
696: if (setsockopt(sock, IPPROTO_IP, IP_TOS,
697: &ptb->Tflag, sizeof(ptb->Tflag)))
698: err(1, "setsockopt IP_TOS");
699: }
700: if (ptb->Tflag != -1 && ss.ss_family == AF_INET6) {
701: if (setsockopt(sock, IPPROTO_IPV6, IPV6_TCLASS,
702: &ptb->Tflag, sizeof(ptb->Tflag)))
703: err(1, "setsockopt IPV6_TCLASS");
704: }
1.20 claudio 705: /* Alloc client structure and register reading callback */
706: if ((sc = calloc(1, sizeof(*sc))) == NULL)
707: err(1, "calloc");
1.33 haesbaer 708: sc->tcp_ts = ts;
1.20 claudio 709: sc->fd = sock;
710: stats_prepare(sc);
711: event_set(&sc->ev, sc->fd, EV_READ | EV_PERSIST,
712: tcp_server_handle_sc, sc);
713: event_add(&sc->ev, NULL);
714: TAILQ_INSERT_TAIL(&sc_queue, sc, entry);
715: mainstats.nconns++;
1.36 haesbaer 716: if (mainstats.nconns == 1)
717: set_slice_timer(1);
1.20 claudio 718: if (ptb->vflag)
1.28 haesbaer 719: fprintf(stderr, "Accepted connection from %s, fd = %d\n",
720: tmp, sc->fd);
1.1 djm 721: }
722:
1.20 claudio 723: static void
724: server_init(struct addrinfo *aitop, struct statctx *udp_sc)
1.1 djm 725: {
726: char tmp[128];
1.11 claudio 727: int sock, on = 1;
1.1 djm 728: struct addrinfo *ai;
1.20 claudio 729: struct event *ev;
1.33 haesbaer 730: struct tcpservsock *ts;
1.11 claudio 731: nfds_t lnfds;
1.1 djm 732:
1.11 claudio 733: lnfds = 0;
1.1 djm 734: for (ai = aitop; ai != NULL; ai = ai->ai_next) {
735: saddr_ntop(ai->ai_addr, ai->ai_addrlen, tmp, sizeof(tmp));
1.20 claudio 736: if (ptb->vflag)
737: fprintf(stderr, "Try to bind to %s\n", tmp);
1.1 djm 738: if ((sock = socket(ai->ai_family, ai->ai_socktype,
739: ai->ai_protocol)) == -1) {
740: if (ai->ai_next == NULL)
741: err(1, "socket");
1.20 claudio 742: if (ptb->vflag)
1.1 djm 743: warn("socket");
744: continue;
745: }
1.24 haesbaer 746: if (ptb->Tflag != -1 && ai->ai_family == AF_INET) {
747: if (setsockopt(sock, IPPROTO_IP, IP_TOS,
748: &ptb->Tflag, sizeof(ptb->Tflag)))
749: err(1, "setsockopt IP_TOS");
750: }
751: if (ptb->Tflag != -1 && ai->ai_family == AF_INET6) {
752: if (setsockopt(sock, IPPROTO_IPV6, IPV6_TCLASS,
753: &ptb->Tflag, sizeof(ptb->Tflag)))
754: err(1, "setsockopt IPV6_TCLASS");
755: }
1.1 djm 756: if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
757: &on, sizeof(on)) == -1)
758: warn("reuse port");
759: if (bind(sock, ai->ai_addr, ai->ai_addrlen) != 0) {
760: if (ai->ai_next == NULL)
761: err(1, "bind");
1.20 claudio 762: if (ptb->vflag)
1.1 djm 763: warn("bind");
764: close(sock);
765: continue;
766: }
1.20 claudio 767: if (ptb->Sflag) {
1.1 djm 768: if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF,
1.20 claudio 769: &ptb->Sflag, sizeof(ptb->Sflag)) == -1)
770: warn("set receive buffer size");
1.1 djm 771: }
1.20 claudio 772: if (TCP_MODE) {
773: if (listen(sock, 64) == -1) {
774: if (ai->ai_next == NULL)
775: err(1, "listen");
776: if (ptb->vflag)
777: warn("listen");
778: close(sock);
779: continue;
780: }
1.1 djm 781: }
1.33 haesbaer 782: if (UDP_MODE) {
783: if ((ev = calloc(1, sizeof(*ev))) == NULL)
784: err(1, "calloc");
1.20 claudio 785: event_set(ev, sock, EV_READ | EV_PERSIST,
786: udp_server_handle_sc, udp_sc);
1.33 haesbaer 787: event_add(ev, NULL);
788: } else {
789: if ((ts = calloc(1, sizeof(*ts))) == NULL)
790: err(1, "calloc");
791:
792: ts->fd = sock;
793: evtimer_set(&ts->evt, tcp_server_accept, ts);
794: event_set(&ts->ev, ts->fd, EV_READ,
795: tcp_server_accept, ts);
796: event_add(&ts->ev, NULL);
797: }
1.20 claudio 798: if (ptb->vflag >= 3)
799: fprintf(stderr, "bound to fd %d\n", sock);
1.11 claudio 800: lnfds++;
1.1 djm 801: }
802: freeaddrinfo(aitop);
1.11 claudio 803: if (lnfds == 0)
1.1 djm 804: errx(1, "No working listen addresses found");
1.11 claudio 805: }
806:
807: static void
1.20 claudio 808: client_handle_sc(int fd, short event, void *v_sc)
809: {
810: struct statctx *sc = v_sc;
811: ssize_t n;
1.1 djm 812:
1.20 claudio 813: if ((n = write(sc->fd, sc->buf, sc->buflen)) == -1) {
1.34 haesbaer 814: if (errno == EINTR || errno == EWOULDBLOCK ||
1.20 claudio 815: (UDP_MODE && errno == ENOBUFS))
1.34 haesbaer 816: return;
1.20 claudio 817: err(1, "write");
1.11 claudio 818: }
1.20 claudio 819: if (TCP_MODE && n == 0) {
1.28 haesbaer 820: fprintf(stderr, "Remote end closed connection");
1.20 claudio 821: exit(1);
1.1 djm 822: }
1.20 claudio 823: if (ptb->vflag >= 3)
1.28 haesbaer 824: fprintf(stderr, "write: %zd bytes\n", n);
1.20 claudio 825: sc->bytes += n;
826: mainstats.slice_bytes += n;
827: if (UDP_MODE)
828: sc->udp_slice_pkts++;
1.1 djm 829: }
830:
1.20 claudio 831: static void
1.25 haesbaer 832: client_init(struct addrinfo *aitop, int nconn, struct statctx *udp_sc,
833: struct addrinfo *aib)
1.1 djm 834: {
1.20 claudio 835: struct statctx *sc;
836: struct addrinfo *ai;
1.14 claudio 837: char tmp[128];
838: int i, r, sock;
1.1 djm 839:
1.20 claudio 840: sc = udp_sc;
1.4 henning 841: for (i = 0; i < nconn; i++) {
842: for (sock = -1, ai = aitop; ai != NULL; ai = ai->ai_next) {
843: saddr_ntop(ai->ai_addr, ai->ai_addrlen, tmp,
844: sizeof(tmp));
1.20 claudio 845: if (ptb->vflag && i == 0)
1.4 henning 846: fprintf(stderr, "Trying %s\n", tmp);
847: if ((sock = socket(ai->ai_family, ai->ai_socktype,
848: ai->ai_protocol)) == -1) {
849: if (ai->ai_next == NULL)
850: err(1, "socket");
1.20 claudio 851: if (ptb->vflag)
1.4 henning 852: warn("socket");
853: continue;
854: }
1.25 haesbaer 855: if (aib != NULL) {
856: saddr_ntop(aib->ai_addr, aib->ai_addrlen,
857: tmp, sizeof(tmp));
858: if (ptb->vflag)
859: fprintf(stderr,
860: "Try to bind to %s\n", tmp);
861: if (bind(sock, (struct sockaddr *)aib->ai_addr,
862: aib->ai_addrlen) == -1)
863: err(1, "bind");
864: }
1.24 haesbaer 865: if (ptb->Tflag != -1 && ai->ai_family == AF_INET) {
866: if (setsockopt(sock, IPPROTO_IP, IP_TOS,
867: &ptb->Tflag, sizeof(ptb->Tflag)))
868: err(1, "setsockopt IP_TOS");
869: }
870: if (ptb->Tflag != -1 && ai->ai_family == AF_INET6) {
871: if (setsockopt(sock, IPPROTO_IPV6, IPV6_TCLASS,
872: &ptb->Tflag, sizeof(ptb->Tflag)))
873: err(1, "setsockopt IPV6_TCLASS");
874: }
1.20 claudio 875: if (ptb->Sflag) {
1.4 henning 876: if (setsockopt(sock, SOL_SOCKET, SO_SNDBUF,
1.20 claudio 877: &ptb->Sflag, sizeof(ptb->Sflag)) == -1)
1.4 henning 878: warn("set TCP send buffer size");
879: }
880: if (connect(sock, ai->ai_addr, ai->ai_addrlen) != 0) {
881: if (ai->ai_next == NULL)
882: err(1, "connect");
1.20 claudio 883: if (ptb->vflag)
1.4 henning 884: warn("connect");
885: close(sock);
886: sock = -1;
887: continue;
888: }
889: break;
1.1 djm 890: }
1.4 henning 891: if (sock == -1)
892: errx(1, "No host found");
893: if ((r = fcntl(sock, F_GETFL, 0)) == -1)
894: err(1, "fcntl(F_GETFL)");
895: r |= O_NONBLOCK;
896: if (fcntl(sock, F_SETFL, r) == -1)
897: err(1, "fcntl(F_SETFL, O_NONBLOCK)");
1.20 claudio 898: /* Alloc and prepare stats */
899: if (TCP_MODE) {
900: if ((sc = calloc(1, sizeof(*sc))) == NULL)
901: err(1, "calloc");
902: }
903: sc->fd = sock;
904: stats_prepare(sc);
905: event_set(&sc->ev, sc->fd, EV_WRITE | EV_PERSIST,
906: client_handle_sc, sc);
907: event_add(&sc->ev, NULL);
908: TAILQ_INSERT_TAIL(&sc_queue, sc, entry);
909: mainstats.nconns++;
1.36 haesbaer 910: if (mainstats.nconns == 1)
911: set_slice_timer(1);
1.14 claudio 912: }
913: freeaddrinfo(aitop);
1.35 haesbaer 914: if (aib != NULL)
915: freeaddrinfo(aib);
1.14 claudio 916:
1.20 claudio 917: if (ptb->vflag && nconn > 1)
1.29 haesbaer 918: fprintf(stderr, "%d connections established\n",
919: mainstats.nconns);
1.14 claudio 920: }
921:
1.24 haesbaer 922: static int
923: map_tos(char *s, int *val)
924: {
925: /* DiffServ Codepoints and other TOS mappings */
926: const struct toskeywords {
927: const char *keyword;
928: int val;
929: } *t, toskeywords[] = {
930: { "af11", IPTOS_DSCP_AF11 },
931: { "af12", IPTOS_DSCP_AF12 },
932: { "af13", IPTOS_DSCP_AF13 },
933: { "af21", IPTOS_DSCP_AF21 },
934: { "af22", IPTOS_DSCP_AF22 },
935: { "af23", IPTOS_DSCP_AF23 },
936: { "af31", IPTOS_DSCP_AF31 },
937: { "af32", IPTOS_DSCP_AF32 },
938: { "af33", IPTOS_DSCP_AF33 },
939: { "af41", IPTOS_DSCP_AF41 },
940: { "af42", IPTOS_DSCP_AF42 },
941: { "af43", IPTOS_DSCP_AF43 },
942: { "critical", IPTOS_PREC_CRITIC_ECP },
943: { "cs0", IPTOS_DSCP_CS0 },
944: { "cs1", IPTOS_DSCP_CS1 },
945: { "cs2", IPTOS_DSCP_CS2 },
946: { "cs3", IPTOS_DSCP_CS3 },
947: { "cs4", IPTOS_DSCP_CS4 },
948: { "cs5", IPTOS_DSCP_CS5 },
949: { "cs6", IPTOS_DSCP_CS6 },
950: { "cs7", IPTOS_DSCP_CS7 },
951: { "ef", IPTOS_DSCP_EF },
952: { "inetcontrol", IPTOS_PREC_INTERNETCONTROL },
953: { "lowdelay", IPTOS_LOWDELAY },
954: { "netcontrol", IPTOS_PREC_NETCONTROL },
955: { "reliability", IPTOS_RELIABILITY },
956: { "throughput", IPTOS_THROUGHPUT },
957: { NULL, -1 },
958: };
959:
960: for (t = toskeywords; t->keyword != NULL; t++) {
961: if (strcmp(s, t->keyword) == 0) {
962: *val = t->val;
963: return (1);
964: }
965: }
966:
967: return (0);
968: }
969:
1.30 henning 970: static void
971: quit(int sig, short event, void *arg)
972: {
973: exit(0);
974: }
975:
1.1 djm 976: int
977: main(int argc, char **argv)
978: {
979: extern int optind;
980: extern char *optarg;
1.30 henning 981: struct timeval tv;
1.37 haesbaer 982: unsigned int secs, rtable;
1.1 djm 983:
984: char kerr[_POSIX2_LINE_MAX], *tmp;
1.25 haesbaer 985: struct addrinfo *aitop, *aib, hints;
1.1 djm 986: const char *errstr;
1.11 claudio 987: struct rlimit rl;
1.20 claudio 988: int ch, herr, nconn;
1.12 deraadt 989: struct nlist nl[] = { { "_tcbtable" }, { "" } };
1.25 haesbaer 990: const char *host = NULL, *port = DEFAULT_PORT, *srcbind = NULL;
1.30 henning 991: struct event ev_sigint, ev_sigterm, ev_sighup, ev_progtimer;
1.20 claudio 992: struct statctx *udp_sc = NULL;
1.1 djm 993:
1.20 claudio 994: /* Init world */
1.26 haesbaer 995: setlinebuf(stdout);
1.20 claudio 996: ptb = &tcpbench;
997: ptb->dummybuf_len = 0;
1.37 haesbaer 998: ptb->Sflag = ptb->sflag = ptb->vflag = 0;
1.20 claudio 999: ptb->kvmh = NULL;
1000: ptb->kvars = NULL;
1001: ptb->rflag = DEFAULT_STATS_INTERVAL;
1.24 haesbaer 1002: ptb->Tflag = -1;
1.20 claudio 1003: nconn = 1;
1.25 haesbaer 1004: aib = NULL;
1.30 henning 1005: secs = 0;
1.1 djm 1006:
1.30 henning 1007: while ((ch = getopt(argc, argv, "b:B:hlk:n:p:r:sS:t:T:uvV:")) != -1) {
1.1 djm 1008: switch (ch) {
1.25 haesbaer 1009: case 'b':
1010: srcbind = optarg;
1011: break;
1.1 djm 1012: case 'l':
1013: list_kvars();
1014: exit(0);
1015: case 'k':
1016: if ((tmp = strdup(optarg)) == NULL)
1017: errx(1, "strdup");
1.20 claudio 1018: ptb->kvars = check_prepare_kvars(tmp);
1.1 djm 1019: free(tmp);
1020: break;
1021: case 'r':
1.20 claudio 1022: ptb->rflag = strtonum(optarg, 0, 60 * 60 * 24 * 1000,
1.1 djm 1023: &errstr);
1024: if (errstr != NULL)
1025: errx(1, "statistics interval is %s: %s",
1026: errstr, optarg);
1027: break;
1028: case 'p':
1029: port = optarg;
1030: break;
1031: case 's':
1.20 claudio 1032: ptb->sflag = 1;
1.1 djm 1033: break;
1034: case 'S':
1.20 claudio 1035: ptb->Sflag = strtonum(optarg, 0, 1024*1024*1024,
1.1 djm 1036: &errstr);
1037: if (errstr != NULL)
1038: errx(1, "receive space interval is %s: %s",
1039: errstr, optarg);
1040: break;
1041: case 'B':
1.20 claudio 1042: ptb->dummybuf_len = strtonum(optarg, 0, 1024*1024*1024,
1.1 djm 1043: &errstr);
1044: if (errstr != NULL)
1045: errx(1, "read/write buffer size is %s: %s",
1046: errstr, optarg);
1047: break;
1048: case 'v':
1.20 claudio 1049: ptb->vflag++;
1.9 claudio 1050: break;
1051: case 'V':
1.37 haesbaer 1052: rtable = (unsigned int)strtonum(optarg, 0,
1.9 claudio 1053: RT_TABLEID_MAX, &errstr);
1054: if (errstr)
1.17 guenther 1055: errx(1, "rtable value is %s: %s",
1.9 claudio 1056: errstr, optarg);
1.37 haesbaer 1057: if (setrtable(rtable) == -1)
1058: err(1, "setrtable");
1.1 djm 1059: break;
1.4 henning 1060: case 'n':
1061: nconn = strtonum(optarg, 0, 65535, &errstr);
1062: if (errstr != NULL)
1063: errx(1, "number of connections is %s: %s",
1064: errstr, optarg);
1065: break;
1.20 claudio 1066: case 'u':
1067: ptb->uflag = 1;
1.24 haesbaer 1068: break;
1069: case 'T':
1070: if (map_tos(optarg, &ptb->Tflag))
1071: break;
1072: errstr = NULL;
1073: if (strlen(optarg) > 1 && optarg[0] == '0' &&
1074: optarg[1] == 'x')
1075: ptb->Tflag = (int)strtol(optarg, NULL, 16);
1076: else
1077: ptb->Tflag = (int)strtonum(optarg, 0, 255,
1078: &errstr);
1079: if (ptb->Tflag == -1 || ptb->Tflag > 255 || errstr)
1080: errx(1, "illegal tos value %s", optarg);
1.20 claudio 1081: break;
1.30 henning 1082: case 't':
1083: secs = strtonum(optarg, 1, UINT_MAX, &errstr);
1084: if (errstr != NULL)
1085: errx(1, "secs is %s: %s",
1086: errstr, optarg);
1087: break;
1.1 djm 1088: case 'h':
1089: default:
1090: usage();
1091: }
1092: }
1093:
1094: argv += optind;
1095: argc -= optind;
1.20 claudio 1096: if ((argc != (ptb->sflag ? 0 : 1)) ||
1097: (UDP_MODE && (ptb->kvars || nconn != 1)))
1.1 djm 1098: usage();
1.4 henning 1099:
1.20 claudio 1100: if (!ptb->sflag)
1.1 djm 1101: host = argv[0];
1.20 claudio 1102: /*
1103: * Rationale,
1104: * If TCP, use a big buffer with big reads/writes.
1105: * If UDP, use a big buffer in server and a buffer the size of a
1106: * ethernet packet.
1107: */
1108: if (!ptb->dummybuf_len) {
1109: if (ptb->sflag || TCP_MODE)
1110: ptb->dummybuf_len = DEFAULT_BUF;
1111: else
1112: ptb->dummybuf_len = DEFAULT_UDP_PKT;
1113: }
1.1 djm 1114:
1.13 claudio 1115: bzero(&hints, sizeof(hints));
1.25 haesbaer 1116: if (UDP_MODE) {
1.20 claudio 1117: hints.ai_socktype = SOCK_DGRAM;
1.25 haesbaer 1118: hints.ai_protocol = IPPROTO_UDP;
1.27 haesbaer 1119: } else {
1.20 claudio 1120: hints.ai_socktype = SOCK_STREAM;
1.25 haesbaer 1121: hints.ai_protocol = IPPROTO_TCP;
1122: }
1.20 claudio 1123: if (ptb->sflag)
1.4 henning 1124: hints.ai_flags = AI_PASSIVE;
1.25 haesbaer 1125: if (srcbind != NULL) {
1126: hints.ai_flags |= AI_NUMERICHOST;
1127: herr = getaddrinfo(srcbind, NULL, &hints, &aib);
1128: hints.ai_flags &= ~AI_NUMERICHOST;
1129: if (herr != 0) {
1130: if (herr == EAI_SYSTEM)
1131: err(1, "getaddrinfo");
1132: else
1133: errx(1, "getaddrinfo: %s", gai_strerror(herr));
1134: }
1135: }
1.13 claudio 1136: if ((herr = getaddrinfo(host, port, &hints, &aitop)) != 0) {
1137: if (herr == EAI_SYSTEM)
1138: err(1, "getaddrinfo");
1139: else
1140: errx(1, "getaddrinfo: %s", gai_strerror(herr));
1.1 djm 1141: }
1.20 claudio 1142: if (ptb->kvars) {
1143: if ((ptb->kvmh = kvm_openfiles(NULL, NULL, NULL,
1.1 djm 1144: O_RDONLY, kerr)) == NULL)
1145: errx(1, "kvm_open: %s", kerr);
1146: drop_gid();
1.20 claudio 1147: if (kvm_nlist(ptb->kvmh, nl) < 0 || nl[0].n_type == 0)
1.1 djm 1148: errx(1, "kvm: no namelist");
1.20 claudio 1149: ptb->ktcbtab = nl[0].n_value;
1.1 djm 1150: } else
1151: drop_gid();
1152:
1.11 claudio 1153: if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
1154: err(1, "getrlimit");
1155: if (rl.rlim_cur < MAX_FD)
1156: rl.rlim_cur = MAX_FD;
1157: if (setrlimit(RLIMIT_NOFILE, &rl))
1158: err(1, "setrlimit");
1159: if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
1160: err(1, "getrlimit");
1161:
1.20 claudio 1162: /* Init world */
1163: TAILQ_INIT(&sc_queue);
1164: if ((ptb->dummybuf = malloc(ptb->dummybuf_len)) == NULL)
1165: err(1, "malloc");
1166: arc4random_buf(ptb->dummybuf, ptb->dummybuf_len);
1167:
1168: /* Setup libevent and signals */
1169: event_init();
1170: signal_set(&ev_sigterm, SIGTERM, signal_handler, NULL);
1171: signal_set(&ev_sighup, SIGHUP, signal_handler, NULL);
1172: signal_set(&ev_sigint, SIGINT, signal_handler, NULL);
1173: signal_add(&ev_sigint, NULL);
1174: signal_add(&ev_sigterm, NULL);
1175: signal_add(&ev_sighup, NULL);
1176: signal(SIGPIPE, SIG_IGN);
1177:
1.27 haesbaer 1178: if (UDP_MODE) {
1179: if ((udp_sc = calloc(1, sizeof(*udp_sc))) == NULL)
1180: err(1, "calloc");
1181: udp_sc->fd = -1;
1182: stats_prepare(udp_sc);
1183: evtimer_set(&mainstats.timer, udp_process_slice, udp_sc);
1184: } else {
1.20 claudio 1185: print_tcp_header();
1186: evtimer_set(&mainstats.timer, tcp_process_slice, NULL);
1.27 haesbaer 1187: }
1.20 claudio 1188:
1.27 haesbaer 1189: if (ptb->sflag)
1.20 claudio 1190: server_init(aitop, udp_sc);
1.30 henning 1191: else {
1192: if (secs > 0) {
1193: timerclear(&tv);
1194: tv.tv_sec = secs + 1;
1195: evtimer_set(&ev_progtimer, quit, NULL);
1196: evtimer_add(&ev_progtimer, &tv);
1197: }
1.25 haesbaer 1198: client_init(aitop, nconn, udp_sc, aib);
1.30 henning 1199: }
1.20 claudio 1200:
1201: /* libevent main loop*/
1202: event_dispatch();
1.1 djm 1203:
1.20 claudio 1204: return (0);
1.1 djm 1205: }