--- /dev/null
+/*-
+ * Copyright (c) 2004 Robert N. M. Watson
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: src/tools/tools/netrate/netblast/netblast.c,v 1.5 2011/11/08 17:23:43 cognet Exp $
+ */
+
+#include <sys/endian.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+
+#include <netinet/in.h>
+#include <netdb.h> /* getaddrinfo */
+
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h> /* close */
+
+static void
+usage(void)
+{
+
+ fprintf(stderr, "netblast [ip] [port] [payloadsize] [duration]\n");
+ exit(-1);
+}
+
+static int global_stop_flag;
+
+static void
+signal_handler(int signum __unused)
+{
+
+ global_stop_flag = 1;
+}
+
+/*
+ * Loop that blasts packets: begin by recording time information, resetting
+ * stats. Set the interval timer for when we want to wake up. Then go.
+ * SIGALRM will set a flag indicating it's time to stop. Note that there's
+ * some overhead to the signal and timer setup, so the smaller the duration,
+ * the higher the relative overhead.
+ */
+static int
+blast_loop(int s, long duration, u_char *packet, u_int packet_len)
+{
+ struct timespec starttime, tmptime;
+ struct itimerval it;
+ u_int32_t counter;
+ int send_errors, send_calls;
+
+ if (signal(SIGALRM, signal_handler) == SIG_ERR) {
+ perror("signal");
+ return (-1);
+ }
+
+ if (clock_getres(CLOCK_REALTIME, &tmptime) == -1) {
+ perror("clock_getres");
+ return (-1);
+ }
+
+ if (clock_gettime(CLOCK_REALTIME, &starttime) == -1) {
+ perror("clock_gettime");
+ return (-1);
+ }
+
+ it.it_interval.tv_sec = 0;
+ it.it_interval.tv_usec = 0;
+ it.it_value.tv_sec = duration;
+ it.it_value.tv_usec = 0;
+
+ if (setitimer(ITIMER_REAL, &it, NULL) < 0) {
+ perror("setitimer");
+ return (-1);
+ }
+
+ send_errors = send_calls = 0;
+ counter = 0;
+ while (global_stop_flag == 0) {
+ /*
+ * We maintain and, if there's room, send a counter. Note
+ * that even if the error is purely local, we still increment
+ * the counter, so missing sequence numbers on the receive
+ * side should not be assumed to be packets lost in transit.
+ * For example, if the UDP socket gets back an ICMP from a
+ * previous send, the error will turn up the current send
+ * operation, causing the current sequence number also to be
+ * skipped.
+ */
+ if (packet_len >= 4) {
+ be32enc(packet, counter);
+ counter++;
+ }
+ if (send(s, packet, packet_len, 0) < 0)
+ send_errors++;
+ send_calls++;
+ }
+
+ if (clock_gettime(CLOCK_REALTIME, &tmptime) == -1) {
+ perror("clock_gettime");
+ return (-1);
+ }
+
+ printf("\n");
+ printf("start: %zd.%09lu\n", starttime.tv_sec,
+ starttime.tv_nsec);
+ printf("finish: %zd.%09lu\n", tmptime.tv_sec,
+ tmptime.tv_nsec);
+ printf("send calls: %d\n", send_calls);
+ printf("send errors: %d\n", send_errors);
+ printf("approx send rate: %ld\n", (send_calls - send_errors) /
+ duration);
+ printf("approx error rate: %d\n", (send_errors / send_calls));
+
+ return (0);
+}
+
+int
+main(int argc, char *argv[])
+{
+ long payloadsize, duration;
+ struct addrinfo hints, *res, *res0;
+ char *dummy, *packet;
+ int port, s, error;
+ const char *cause = NULL;
+
+ if (argc != 5)
+ usage();
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = PF_UNSPEC;
+ hints.ai_socktype = SOCK_DGRAM;
+
+ port = strtoul(argv[2], &dummy, 10);
+ if (port < 1 || port > 65535 || *dummy != '\0') {
+ fprintf(stderr, "Invalid port number: %s\n", argv[2]);
+ usage();
+ /*NOTREACHED*/
+ }
+
+ payloadsize = strtoul(argv[3], &dummy, 10);
+ if (payloadsize < 0 || *dummy != '\0')
+ usage();
+ if (payloadsize > 32768) {
+ fprintf(stderr, "payloadsize > 32768\n");
+ return (-1);
+ /*NOTREACHED*/
+ }
+
+ duration = strtoul(argv[4], &dummy, 10);
+ if (duration < 0 || *dummy != '\0') {
+ fprintf(stderr, "Invalid duration time: %s\n", argv[4]);
+ usage();
+ /*NOTREACHED*/
+ }
+
+ packet = malloc(payloadsize);
+ if (packet == NULL) {
+ perror("malloc");
+ return (-1);
+ /*NOTREACHED*/
+ }
+
+ bzero(packet, payloadsize);
+ error = getaddrinfo(argv[1],argv[2], &hints, &res0);
+ if (error) {
+ perror(gai_strerror(error));
+ return (-1);
+ /*NOTREACHED*/
+ }
+ s = -1;
+ for (res = res0; res; res = res->ai_next) {
+ s = socket(res->ai_family, res->ai_socktype, 0);
+ if (s < 0) {
+ cause = "socket";
+ continue;
+ }
+
+ if (connect(s, res->ai_addr, res->ai_addrlen) < 0) {
+ cause = "connect";
+ close(s);
+ s = -1;
+ continue;
+ }
+
+ break; /* okay we got one */
+ }
+ if (s < 0) {
+ perror(cause);
+ return (-1);
+ /*NOTREACHED*/
+ }
+
+ freeaddrinfo(res0);
+
+ return (blast_loop(s, duration, packet, payloadsize));
+
+}
projects / dragonfly.git / commitdiff