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      1 /*	$NetBSD: qdisc_fifoq.c,v 1.5 2006/10/28 11:43:02 peter Exp $	*/
      2 /*	$KAME: qdisc_fifoq.c,v 1.6 2002/11/08 06:36:18 kjc Exp $	*/
      3 /*
      4  * Copyright (C) 1999-2000
      5  *	Sony Computer Science Laboratories, Inc.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/param.h>
     30 #include <sys/ioctl.h>
     31 #include <sys/time.h>
     32 #include <sys/socket.h>
     33 #include <net/if.h>
     34 #include <netinet/in.h>
     35 #include <altq/altq.h>
     36 #include <altq/altq_fifoq.h>
     37 
     38 #include <stdio.h>
     39 #include <stdlib.h>
     40 #include <unistd.h>
     41 #include <string.h>
     42 #include <signal.h>
     43 #include <errno.h>
     44 #include <err.h>
     45 
     46 #include "altqstat.h"
     47 
     48 void
     49 fifoq_stat_loop(int fd, const char *ifname, int count, int interval)
     50 {
     51 	struct fifoq_getstats get_stats;
     52 	struct timeval cur_time, last_time;
     53 	u_int64_t last_bytes;
     54 	double sec;
     55 	int cnt = count;
     56 	sigset_t		omask;
     57 
     58 	strlcpy(get_stats.iface.fifoq_ifname, ifname,
     59 		sizeof(get_stats.iface.fifoq_ifname));
     60 
     61 	gettimeofday(&last_time, NULL);
     62 	last_time.tv_sec -= interval;
     63 	last_bytes = 0;
     64 
     65 	for (;;) {
     66 		if (ioctl(fd, FIFOQ_GETSTATS, &get_stats) < 0)
     67 			err(1, "ioctl FIFOQ_GETSTATS");
     68 
     69 		gettimeofday(&cur_time, NULL);
     70 		sec = calc_interval(&cur_time, &last_time);
     71 
     72 		printf(" q_len:%d q_limit:%d period:%u\n",
     73 		       get_stats.q_len, get_stats.q_limit, get_stats.period);
     74 		printf(" xmit:%llu pkts (%llu bytes) drop:%llu pkts (%llu bytes)\n",
     75 		       (ull)get_stats.xmit_cnt.packets,
     76 		       (ull)get_stats.xmit_cnt.bytes,
     77 		       (ull)get_stats.drop_cnt.packets,
     78 		       (ull)get_stats.drop_cnt.bytes);
     79 		printf(" throughput: %sbps\n",
     80 		       rate2str(calc_rate(get_stats.xmit_cnt.bytes,
     81 					  last_bytes, sec)));
     82 
     83 		last_bytes = get_stats.xmit_cnt.bytes;
     84 		last_time = cur_time;
     85 
     86 		if (count != 0 && --cnt == 0)
     87 			break;
     88 
     89 		/* wait for alarm signal */
     90 		if (sigprocmask(SIG_BLOCK, NULL, &omask) == 0)
     91 			sigsuspend(&omask);
     92 	}
     93 }
     94