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20#define _GNU_SOURCE
21
22#include <arpa/inet.h>
23#include <asm/types.h>
24#include <error.h>
25#include <errno.h>
26#include <inttypes.h>
27#include <linux/errqueue.h>
28#include <linux/if_ether.h>
29#include <linux/ipv6.h>
30#include <linux/net_tstamp.h>
31#include <netdb.h>
32#include <net/if.h>
33#include <netinet/in.h>
34#include <netinet/ip.h>
35#include <netinet/udp.h>
36#include <netinet/tcp.h>
37#include <netpacket/packet.h>
38#include <poll.h>
39#include <stdarg.h>
40#include <stdbool.h>
41#include <stdio.h>
42#include <stdlib.h>
43#include <string.h>
44#include <sys/ioctl.h>
45#include <sys/select.h>
46#include <sys/socket.h>
47#include <sys/time.h>
48#include <sys/types.h>
49#include <time.h>
50#include <unistd.h>
51
52
53static int cfg_proto = SOCK_STREAM;
54static int cfg_ipproto = IPPROTO_TCP;
55static int cfg_num_pkts = 4;
56static int do_ipv4 = 1;
57static int do_ipv6 = 1;
58static int cfg_payload_len = 10;
59static int cfg_poll_timeout = 100;
60static int cfg_delay_snd;
61static int cfg_delay_ack;
62static bool cfg_show_payload;
63static bool cfg_do_pktinfo;
64static bool cfg_loop_nodata;
65static bool cfg_no_delay;
66static bool cfg_use_cmsg;
67static bool cfg_use_pf_packet;
68static bool cfg_do_listen;
69static uint16_t dest_port = 9000;
70
71static struct sockaddr_in daddr;
72static struct sockaddr_in6 daddr6;
73static struct timespec ts_usr;
74
75static int saved_tskey = -1;
76static int saved_tskey_type = -1;
77
78static bool test_failed;
79
80static int64_t timespec_to_us64(struct timespec *ts)
81{
82 return ts->tv_sec * 1000 * 1000 + ts->tv_nsec / 1000;
83}
84
85static void validate_key(int tskey, int tstype)
86{
87 int stepsize;
88
89
90
91
92 if (saved_tskey == -1)
93 saved_tskey_type = tstype;
94 else if (saved_tskey_type != tstype)
95 return;
96
97 stepsize = cfg_proto == SOCK_STREAM ? cfg_payload_len : 1;
98 if (tskey != saved_tskey + stepsize) {
99 fprintf(stderr, "ERROR: key %d, expected %d\n",
100 tskey, saved_tskey + stepsize);
101 test_failed = true;
102 }
103
104 saved_tskey = tskey;
105}
106
107static void validate_timestamp(struct timespec *cur, int min_delay)
108{
109 int max_delay = min_delay + 500 ;
110 int64_t cur64, start64;
111
112 cur64 = timespec_to_us64(cur);
113 start64 = timespec_to_us64(&ts_usr);
114
115 if (cur64 < start64 + min_delay || cur64 > start64 + max_delay) {
116 fprintf(stderr, "ERROR: delay %lu expected between %d and %d\n",
117 cur64 - start64, min_delay, max_delay);
118 test_failed = true;
119 }
120}
121
122static void __print_timestamp(const char *name, struct timespec *cur,
123 uint32_t key, int payload_len)
124{
125 if (!(cur->tv_sec | cur->tv_nsec))
126 return;
127
128 fprintf(stderr, " %s: %lu s %lu us (seq=%u, len=%u)",
129 name, cur->tv_sec, cur->tv_nsec / 1000,
130 key, payload_len);
131
132 if (cur != &ts_usr)
133 fprintf(stderr, " (USR %+" PRId64 " us)",
134 timespec_to_us64(cur) - timespec_to_us64(&ts_usr));
135
136 fprintf(stderr, "\n");
137}
138
139static void print_timestamp_usr(void)
140{
141 if (clock_gettime(CLOCK_REALTIME, &ts_usr))
142 error(1, errno, "clock_gettime");
143
144 __print_timestamp(" USR", &ts_usr, 0, 0);
145}
146
147static void print_timestamp(struct scm_timestamping *tss, int tstype,
148 int tskey, int payload_len)
149{
150 const char *tsname;
151
152 validate_key(tskey, tstype);
153
154 switch (tstype) {
155 case SCM_TSTAMP_SCHED:
156 tsname = " ENQ";
157 validate_timestamp(&tss->ts[0], 0);
158 break;
159 case SCM_TSTAMP_SND:
160 tsname = " SND";
161 validate_timestamp(&tss->ts[0], cfg_delay_snd);
162 break;
163 case SCM_TSTAMP_ACK:
164 tsname = " ACK";
165 validate_timestamp(&tss->ts[0], cfg_delay_ack);
166 break;
167 default:
168 error(1, 0, "unknown timestamp type: %u",
169 tstype);
170 }
171 __print_timestamp(tsname, &tss->ts[0], tskey, payload_len);
172}
173
174
175static void print_payload(char *data, int len)
176{
177 int i;
178
179 if (!len)
180 return;
181
182 if (len > 70)
183 len = 70;
184
185 fprintf(stderr, "payload: ");
186 for (i = 0; i < len; i++)
187 fprintf(stderr, "%02hhx ", data[i]);
188 fprintf(stderr, "\n");
189}
190
191static void print_pktinfo(int family, int ifindex, void *saddr, void *daddr)
192{
193 char sa[INET6_ADDRSTRLEN], da[INET6_ADDRSTRLEN];
194
195 fprintf(stderr, " pktinfo: ifindex=%u src=%s dst=%s\n",
196 ifindex,
197 saddr ? inet_ntop(family, saddr, sa, sizeof(sa)) : "unknown",
198 daddr ? inet_ntop(family, daddr, da, sizeof(da)) : "unknown");
199}
200
201static void __poll(int fd)
202{
203 struct pollfd pollfd;
204 int ret;
205
206 memset(&pollfd, 0, sizeof(pollfd));
207 pollfd.fd = fd;
208 ret = poll(&pollfd, 1, cfg_poll_timeout);
209 if (ret != 1)
210 error(1, errno, "poll");
211}
212
213static void __recv_errmsg_cmsg(struct msghdr *msg, int payload_len)
214{
215 struct sock_extended_err *serr = NULL;
216 struct scm_timestamping *tss = NULL;
217 struct cmsghdr *cm;
218 int batch = 0;
219
220 for (cm = CMSG_FIRSTHDR(msg);
221 cm && cm->cmsg_len;
222 cm = CMSG_NXTHDR(msg, cm)) {
223 if (cm->cmsg_level == SOL_SOCKET &&
224 cm->cmsg_type == SCM_TIMESTAMPING) {
225 tss = (void *) CMSG_DATA(cm);
226 } else if ((cm->cmsg_level == SOL_IP &&
227 cm->cmsg_type == IP_RECVERR) ||
228 (cm->cmsg_level == SOL_IPV6 &&
229 cm->cmsg_type == IPV6_RECVERR) ||
230 (cm->cmsg_level == SOL_PACKET &&
231 cm->cmsg_type == PACKET_TX_TIMESTAMP)) {
232 serr = (void *) CMSG_DATA(cm);
233 if (serr->ee_errno != ENOMSG ||
234 serr->ee_origin != SO_EE_ORIGIN_TIMESTAMPING) {
235 fprintf(stderr, "unknown ip error %d %d\n",
236 serr->ee_errno,
237 serr->ee_origin);
238 serr = NULL;
239 }
240 } else if (cm->cmsg_level == SOL_IP &&
241 cm->cmsg_type == IP_PKTINFO) {
242 struct in_pktinfo *info = (void *) CMSG_DATA(cm);
243 print_pktinfo(AF_INET, info->ipi_ifindex,
244 &info->ipi_spec_dst, &info->ipi_addr);
245 } else if (cm->cmsg_level == SOL_IPV6 &&
246 cm->cmsg_type == IPV6_PKTINFO) {
247 struct in6_pktinfo *info6 = (void *) CMSG_DATA(cm);
248 print_pktinfo(AF_INET6, info6->ipi6_ifindex,
249 NULL, &info6->ipi6_addr);
250 } else
251 fprintf(stderr, "unknown cmsg %d,%d\n",
252 cm->cmsg_level, cm->cmsg_type);
253
254 if (serr && tss) {
255 print_timestamp(tss, serr->ee_info, serr->ee_data,
256 payload_len);
257 serr = NULL;
258 tss = NULL;
259 batch++;
260 }
261 }
262
263 if (batch > 1)
264 fprintf(stderr, "batched %d timestamps\n", batch);
265}
266
267static int recv_errmsg(int fd)
268{
269 static char ctrl[1024 ];
270 static struct msghdr msg;
271 struct iovec entry;
272 static char *data;
273 int ret = 0;
274
275 data = malloc(cfg_payload_len);
276 if (!data)
277 error(1, 0, "malloc");
278
279 memset(&msg, 0, sizeof(msg));
280 memset(&entry, 0, sizeof(entry));
281 memset(ctrl, 0, sizeof(ctrl));
282
283 entry.iov_base = data;
284 entry.iov_len = cfg_payload_len;
285 msg.msg_iov = &entry;
286 msg.msg_iovlen = 1;
287 msg.msg_name = NULL;
288 msg.msg_namelen = 0;
289 msg.msg_control = ctrl;
290 msg.msg_controllen = sizeof(ctrl);
291
292 ret = recvmsg(fd, &msg, MSG_ERRQUEUE);
293 if (ret == -1 && errno != EAGAIN)
294 error(1, errno, "recvmsg");
295
296 if (ret >= 0) {
297 __recv_errmsg_cmsg(&msg, ret);
298 if (cfg_show_payload)
299 print_payload(data, cfg_payload_len);
300 }
301
302 free(data);
303 return ret == -1;
304}
305
306static uint16_t get_ip_csum(const uint16_t *start, int num_words,
307 unsigned long sum)
308{
309 int i;
310
311 for (i = 0; i < num_words; i++)
312 sum += start[i];
313
314 while (sum >> 16)
315 sum = (sum & 0xFFFF) + (sum >> 16);
316
317 return ~sum;
318}
319
320static uint16_t get_udp_csum(const struct udphdr *udph, int alen)
321{
322 unsigned long pseudo_sum, csum_len;
323 const void *csum_start = udph;
324
325 pseudo_sum = htons(IPPROTO_UDP);
326 pseudo_sum += udph->len;
327
328
329 csum_start -= alen * 2;
330 csum_len = ntohs(udph->len) + alen * 2;
331
332 return get_ip_csum(csum_start, csum_len >> 1, pseudo_sum);
333}
334
335static int fill_header_ipv4(void *p)
336{
337 struct iphdr *iph = p;
338
339 memset(iph, 0, sizeof(*iph));
340
341 iph->ihl = 5;
342 iph->version = 4;
343 iph->ttl = 2;
344 iph->saddr = daddr.sin_addr.s_addr;
345 iph->daddr = daddr.sin_addr.s_addr;
346 iph->protocol = IPPROTO_UDP;
347
348
349
350 return sizeof(*iph);
351}
352
353static int fill_header_ipv6(void *p)
354{
355 struct ipv6hdr *ip6h = p;
356
357 memset(ip6h, 0, sizeof(*ip6h));
358
359 ip6h->version = 6;
360 ip6h->payload_len = htons(sizeof(struct udphdr) + cfg_payload_len);
361 ip6h->nexthdr = IPPROTO_UDP;
362 ip6h->hop_limit = 64;
363
364 ip6h->saddr = daddr6.sin6_addr;
365 ip6h->daddr = daddr6.sin6_addr;
366
367
368
369 return sizeof(*ip6h);
370}
371
372static void fill_header_udp(void *p, bool is_ipv4)
373{
374 struct udphdr *udph = p;
375
376 udph->source = ntohs(dest_port + 1);
377 udph->dest = ntohs(dest_port);
378 udph->len = ntohs(sizeof(*udph) + cfg_payload_len);
379 udph->check = 0;
380
381 udph->check = get_udp_csum(udph, is_ipv4 ? sizeof(struct in_addr) :
382 sizeof(struct in6_addr));
383}
384
385static void do_test(int family, unsigned int report_opt)
386{
387 char control[CMSG_SPACE(sizeof(uint32_t))];
388 struct sockaddr_ll laddr;
389 unsigned int sock_opt;
390 struct cmsghdr *cmsg;
391 struct msghdr msg;
392 struct iovec iov;
393 char *buf;
394 int fd, i, val = 1, total_len;
395
396 total_len = cfg_payload_len;
397 if (cfg_use_pf_packet || cfg_proto == SOCK_RAW) {
398 total_len += sizeof(struct udphdr);
399 if (cfg_use_pf_packet || cfg_ipproto == IPPROTO_RAW)
400 if (family == PF_INET)
401 total_len += sizeof(struct iphdr);
402 else
403 total_len += sizeof(struct ipv6hdr);
404
405
406
407
408
409 daddr6.sin6_port = htons(cfg_ipproto);
410 }
411
412 buf = malloc(total_len);
413 if (!buf)
414 error(1, 0, "malloc");
415
416 fd = socket(cfg_use_pf_packet ? PF_PACKET : family,
417 cfg_proto, cfg_ipproto);
418 if (fd < 0)
419 error(1, errno, "socket");
420
421
422 saved_tskey = -1;
423
424 if (cfg_proto == SOCK_STREAM) {
425 if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY,
426 (char*) &val, sizeof(val)))
427 error(1, 0, "setsockopt no nagle");
428
429 if (family == PF_INET) {
430 if (connect(fd, (void *) &daddr, sizeof(daddr)))
431 error(1, errno, "connect ipv4");
432 } else {
433 if (connect(fd, (void *) &daddr6, sizeof(daddr6)))
434 error(1, errno, "connect ipv6");
435 }
436 }
437
438 if (cfg_do_pktinfo) {
439 if (family == AF_INET6) {
440 if (setsockopt(fd, SOL_IPV6, IPV6_RECVPKTINFO,
441 &val, sizeof(val)))
442 error(1, errno, "setsockopt pktinfo ipv6");
443 } else {
444 if (setsockopt(fd, SOL_IP, IP_PKTINFO,
445 &val, sizeof(val)))
446 error(1, errno, "setsockopt pktinfo ipv4");
447 }
448 }
449
450 sock_opt = SOF_TIMESTAMPING_SOFTWARE |
451 SOF_TIMESTAMPING_OPT_CMSG |
452 SOF_TIMESTAMPING_OPT_ID;
453
454 if (!cfg_use_cmsg)
455 sock_opt |= report_opt;
456
457 if (cfg_loop_nodata)
458 sock_opt |= SOF_TIMESTAMPING_OPT_TSONLY;
459
460 if (setsockopt(fd, SOL_SOCKET, SO_TIMESTAMPING,
461 (char *) &sock_opt, sizeof(sock_opt)))
462 error(1, 0, "setsockopt timestamping");
463
464 for (i = 0; i < cfg_num_pkts; i++) {
465 memset(&msg, 0, sizeof(msg));
466 memset(buf, 'a' + i, total_len);
467
468 if (cfg_use_pf_packet || cfg_proto == SOCK_RAW) {
469 int off = 0;
470
471 if (cfg_use_pf_packet || cfg_ipproto == IPPROTO_RAW) {
472 if (family == PF_INET)
473 off = fill_header_ipv4(buf);
474 else
475 off = fill_header_ipv6(buf);
476 }
477
478 fill_header_udp(buf + off, family == PF_INET);
479 }
480
481 print_timestamp_usr();
482
483 iov.iov_base = buf;
484 iov.iov_len = total_len;
485
486 if (cfg_proto != SOCK_STREAM) {
487 if (cfg_use_pf_packet) {
488 memset(&laddr, 0, sizeof(laddr));
489
490 laddr.sll_family = AF_PACKET;
491 laddr.sll_ifindex = 1;
492 laddr.sll_protocol = htons(family == AF_INET ? ETH_P_IP : ETH_P_IPV6);
493 laddr.sll_halen = ETH_ALEN;
494
495 msg.msg_name = (void *)&laddr;
496 msg.msg_namelen = sizeof(laddr);
497 } else if (family == PF_INET) {
498 msg.msg_name = (void *)&daddr;
499 msg.msg_namelen = sizeof(daddr);
500 } else {
501 msg.msg_name = (void *)&daddr6;
502 msg.msg_namelen = sizeof(daddr6);
503 }
504 }
505
506 msg.msg_iov = &iov;
507 msg.msg_iovlen = 1;
508
509 if (cfg_use_cmsg) {
510 memset(control, 0, sizeof(control));
511
512 msg.msg_control = control;
513 msg.msg_controllen = sizeof(control);
514
515 cmsg = CMSG_FIRSTHDR(&msg);
516 cmsg->cmsg_level = SOL_SOCKET;
517 cmsg->cmsg_type = SO_TIMESTAMPING;
518 cmsg->cmsg_len = CMSG_LEN(sizeof(uint32_t));
519
520 *((uint32_t *) CMSG_DATA(cmsg)) = report_opt;
521 }
522
523 val = sendmsg(fd, &msg, 0);
524 if (val != total_len)
525 error(1, errno, "send");
526
527
528 if (!cfg_no_delay)
529 usleep(50 * 1000);
530
531 __poll(fd);
532
533 while (!recv_errmsg(fd)) {}
534 }
535
536 if (close(fd))
537 error(1, errno, "close");
538
539 free(buf);
540 usleep(100 * 1000);
541}
542
543static void __attribute__((noreturn)) usage(const char *filepath)
544{
545 fprintf(stderr, "\nUsage: %s [options] hostname\n"
546 "\nwhere options are:\n"
547 " -4: only IPv4\n"
548 " -6: only IPv6\n"
549 " -h: show this message\n"
550 " -c N: number of packets for each test\n"
551 " -C: use cmsg to set tstamp recording options\n"
552 " -D: no delay between packets\n"
553 " -F: poll() waits forever for an event\n"
554 " -I: request PKTINFO\n"
555 " -l N: send N bytes at a time\n"
556 " -L listen on hostname and port\n"
557 " -n: set no-payload option\n"
558 " -p N: connect to port N\n"
559 " -P: use PF_PACKET\n"
560 " -r: use raw\n"
561 " -R: use raw (IP_HDRINCL)\n"
562 " -u: use udp\n"
563 " -v: validate SND delay (usec)\n"
564 " -V: validate ACK delay (usec)\n"
565 " -x: show payload (up to 70 bytes)\n",
566 filepath);
567 exit(1);
568}
569
570static void parse_opt(int argc, char **argv)
571{
572 int proto_count = 0;
573 int c;
574
575 while ((c = getopt(argc, argv, "46c:CDFhIl:Lnp:PrRuv:V:x")) != -1) {
576 switch (c) {
577 case '4':
578 do_ipv6 = 0;
579 break;
580 case '6':
581 do_ipv4 = 0;
582 break;
583 case 'c':
584 cfg_num_pkts = strtoul(optarg, NULL, 10);
585 break;
586 case 'C':
587 cfg_use_cmsg = true;
588 break;
589 case 'D':
590 cfg_no_delay = true;
591 break;
592 case 'F':
593 cfg_poll_timeout = -1;
594 break;
595 case 'I':
596 cfg_do_pktinfo = true;
597 break;
598 case 'l':
599 cfg_payload_len = strtoul(optarg, NULL, 10);
600 break;
601 case 'L':
602 cfg_do_listen = true;
603 break;
604 case 'n':
605 cfg_loop_nodata = true;
606 break;
607 case 'p':
608 dest_port = strtoul(optarg, NULL, 10);
609 break;
610 case 'P':
611 proto_count++;
612 cfg_use_pf_packet = true;
613 cfg_proto = SOCK_DGRAM;
614 cfg_ipproto = 0;
615 break;
616 case 'r':
617 proto_count++;
618 cfg_proto = SOCK_RAW;
619 cfg_ipproto = IPPROTO_UDP;
620 break;
621 case 'R':
622 proto_count++;
623 cfg_proto = SOCK_RAW;
624 cfg_ipproto = IPPROTO_RAW;
625 break;
626 case 'u':
627 proto_count++;
628 cfg_proto = SOCK_DGRAM;
629 cfg_ipproto = IPPROTO_UDP;
630 break;
631 case 'v':
632 cfg_delay_snd = strtoul(optarg, NULL, 10);
633 break;
634 case 'V':
635 cfg_delay_ack = strtoul(optarg, NULL, 10);
636 break;
637 case 'x':
638 cfg_show_payload = true;
639 break;
640 case 'h':
641 default:
642 usage(argv[0]);
643 }
644 }
645
646 if (!cfg_payload_len)
647 error(1, 0, "payload may not be nonzero");
648 if (cfg_proto != SOCK_STREAM && cfg_payload_len > 1472)
649 error(1, 0, "udp packet might exceed expected MTU");
650 if (!do_ipv4 && !do_ipv6)
651 error(1, 0, "pass -4 or -6, not both");
652 if (proto_count > 1)
653 error(1, 0, "pass -P, -r, -R or -u, not multiple");
654 if (cfg_do_pktinfo && cfg_use_pf_packet)
655 error(1, 0, "cannot ask for pktinfo over pf_packet");
656
657 if (optind != argc - 1)
658 error(1, 0, "missing required hostname argument");
659}
660
661static void resolve_hostname(const char *hostname)
662{
663 struct addrinfo hints = { .ai_family = do_ipv4 ? AF_INET : AF_INET6 };
664 struct addrinfo *addrs, *cur;
665 int have_ipv4 = 0, have_ipv6 = 0;
666
667retry:
668 if (getaddrinfo(hostname, NULL, &hints, &addrs))
669 error(1, errno, "getaddrinfo");
670
671 cur = addrs;
672 while (cur && !have_ipv4 && !have_ipv6) {
673 if (!have_ipv4 && cur->ai_family == AF_INET) {
674 memcpy(&daddr, cur->ai_addr, sizeof(daddr));
675 daddr.sin_port = htons(dest_port);
676 have_ipv4 = 1;
677 }
678 else if (!have_ipv6 && cur->ai_family == AF_INET6) {
679 memcpy(&daddr6, cur->ai_addr, sizeof(daddr6));
680 daddr6.sin6_port = htons(dest_port);
681 have_ipv6 = 1;
682 }
683 cur = cur->ai_next;
684 }
685 if (addrs)
686 freeaddrinfo(addrs);
687
688 if (do_ipv6 && hints.ai_family != AF_INET6) {
689 hints.ai_family = AF_INET6;
690 goto retry;
691 }
692
693 do_ipv4 &= have_ipv4;
694 do_ipv6 &= have_ipv6;
695}
696
697static void do_listen(int family, void *addr, int alen)
698{
699 int fd, type;
700
701 type = cfg_proto == SOCK_RAW ? SOCK_DGRAM : cfg_proto;
702
703 fd = socket(family, type, 0);
704 if (fd == -1)
705 error(1, errno, "socket rx");
706
707 if (bind(fd, addr, alen))
708 error(1, errno, "bind rx");
709
710 if (type == SOCK_STREAM && listen(fd, 10))
711 error(1, errno, "listen rx");
712
713
714
715
716}
717
718static void do_main(int family)
719{
720 fprintf(stderr, "family: %s %s\n",
721 family == PF_INET ? "INET" : "INET6",
722 cfg_use_pf_packet ? "(PF_PACKET)" : "");
723
724 fprintf(stderr, "test SND\n");
725 do_test(family, SOF_TIMESTAMPING_TX_SOFTWARE);
726
727 fprintf(stderr, "test ENQ\n");
728 do_test(family, SOF_TIMESTAMPING_TX_SCHED);
729
730 fprintf(stderr, "test ENQ + SND\n");
731 do_test(family, SOF_TIMESTAMPING_TX_SCHED |
732 SOF_TIMESTAMPING_TX_SOFTWARE);
733
734 if (cfg_proto == SOCK_STREAM) {
735 fprintf(stderr, "\ntest ACK\n");
736 do_test(family, SOF_TIMESTAMPING_TX_ACK);
737
738 fprintf(stderr, "\ntest SND + ACK\n");
739 do_test(family, SOF_TIMESTAMPING_TX_SOFTWARE |
740 SOF_TIMESTAMPING_TX_ACK);
741
742 fprintf(stderr, "\ntest ENQ + SND + ACK\n");
743 do_test(family, SOF_TIMESTAMPING_TX_SCHED |
744 SOF_TIMESTAMPING_TX_SOFTWARE |
745 SOF_TIMESTAMPING_TX_ACK);
746 }
747}
748
749const char *sock_names[] = { NULL, "TCP", "UDP", "RAW" };
750
751int main(int argc, char **argv)
752{
753 if (argc == 1)
754 usage(argv[0]);
755
756 parse_opt(argc, argv);
757 resolve_hostname(argv[argc - 1]);
758
759 fprintf(stderr, "protocol: %s\n", sock_names[cfg_proto]);
760 fprintf(stderr, "payload: %u\n", cfg_payload_len);
761 fprintf(stderr, "server port: %u\n", dest_port);
762 fprintf(stderr, "\n");
763
764 if (do_ipv4) {
765 if (cfg_do_listen)
766 do_listen(PF_INET, &daddr, sizeof(daddr));
767 do_main(PF_INET);
768 }
769
770 if (do_ipv6) {
771 if (cfg_do_listen)
772 do_listen(PF_INET6, &daddr6, sizeof(daddr6));
773 do_main(PF_INET6);
774 }
775
776 return test_failed;
777}
778
