1/*	$NetBSD: qdisc_red.c,v 1.4 2006/10/12 19:59:13 peter Exp $	*/
2/*	$KAME: qdisc_red.c,v 1.5 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_red.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
48static int avg_scale = 4096;	/* default fixed-point scale */
49
50void
51red_stat_loop(int fd, const char *ifname, int count, int interval)
52{
53	struct red_stats red_stats;
54	struct timeval cur_time, last_time;
55	u_int64_t last_bytes;
56	double sec;
57	int cnt = count;
58	sigset_t		omask;
59
60	strlcpy(red_stats.iface.red_ifname, ifname,
61		sizeof(red_stats.iface.red_ifname));
62
63	gettimeofday(&last_time, NULL);
64	last_time.tv_sec -= interval;
65	last_bytes = 0;
66
67	for (;;) {
68		if (ioctl(fd, RED_GETSTATS, &red_stats) < 0)
69			err(1, "ioctl RED_GETSTATS");
70
71		gettimeofday(&cur_time, NULL);
72		sec = calc_interval(&cur_time, &last_time);
73
74		printf(" weight:%d inv_pmax:%d qthresh:(%d,%d)\n",
75		       red_stats.weight,  red_stats.inv_pmax,
76		       red_stats.th_min,  red_stats.th_max);
77		printf(" q_len:%d (avg: %.2f), q_limit:%d\n",
78		       red_stats.q_len,
79		       ((double)red_stats.q_avg)/(double)avg_scale,
80		       red_stats.q_limit);
81		printf(" xmit:%llu pkts, drop:%llu pkts (forced: %u, early: %u)\n",
82		       (ull)red_stats.xmit_cnt.packets,
83		       (ull)red_stats.drop_cnt.packets,
84		       red_stats.drop_forced, red_stats.drop_unforced);
85		if (red_stats.marked_packets != 0)
86			printf(" marked: %u\n", red_stats.marked_packets);
87		printf(" throughput: %sbps\n",
88		       rate2str(calc_rate(red_stats.xmit_cnt.bytes,
89					  last_bytes, sec)));
90		if (red_stats.fv_alloc > 0) {
91			printf(" flowvalve: alloc:%u flows:%u\n",
92			       red_stats.fv_alloc, red_stats.fv_flows);
93			printf("  predrop:%u pass:%u escape:%u\n",
94			       red_stats.fv_predrop, red_stats.fv_pass,
95			       red_stats.fv_escape);
96		}
97		printf("\n");
98
99		last_bytes = red_stats.xmit_cnt.bytes;
100		last_time = cur_time;
101
102		if (count != 0 && --cnt == 0)
103			break;
104
105		/* wait for alarm signal */
106		if (sigprocmask(SIG_BLOCK, NULL, &omask) == 0)
107			sigsuspend(&omask);
108	}
109}
110
111int
112print_redstats(struct redstats *rp)
113{
114	printf("     RED q_avg:%.2f xmit:%llu (forced:%u early:%u marked:%u)\n",
115	       ((double)rp->q_avg)/(double)avg_scale,
116	       (ull)rp->xmit_cnt.packets,
117	       rp->drop_forced,
118	       rp->drop_unforced,
119	       rp->marked_packets);
120	return 0;
121}
122