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netstat: New command - Almost completely compiles
Currently disable in Makefile until all builds. Adding it so others can assist in debugging issues.
This commit is contained in:
Joel Sherrill
391
freebsd-userspace/commands/usr.bin/netstat/mroute.c
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391
freebsd-userspace/commands/usr.bin/netstat/mroute.c
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@@ -0,0 +1,391 @@
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/*-
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* Copyright (c) 1989 Stephen Deering
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Stephen Deering of Stanford University.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)mroute.c 8.2 (Berkeley) 4/28/95
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Print multicast routing structures and statistics.
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*
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* MROUTING 1.0
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*/
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sysctl.h>
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#ifdef __rtems__
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#include <freebsd/sys/protosw.h>
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#else
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#include <sys/protosw.h>
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#endif
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#ifdef __rtems__
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#include <freebsd/sys/mbuf.h>
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#else
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#include <sys/mbuf.h>
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#endif
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#include <sys/time.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/igmp.h>
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#include <net/route.h>
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#define _KERNEL 1
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#ifdef __rtems__
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#include <freebsd/netinet/ip_mroute.h>
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#else
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#include <netinet/ip_mroute.h>
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#endif
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#undef _KERNEL
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#include <err.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "netstat.h"
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static void print_bw_meter(struct bw_meter *, int *);
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static void print_mfc(struct mfc *, int, int *);
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static void
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print_bw_meter(struct bw_meter *bw_meter, int *banner_printed)
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{
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char s0[256], s1[256], s2[256], s3[256];
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struct timeval now, end, delta;
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gettimeofday(&now, NULL);
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if (! *banner_printed) {
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printf(" Bandwidth Meters\n");
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printf(" %-30s", "Measured(Start|Packets|Bytes)");
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printf(" %s", "Type");
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printf(" %-30s", "Thresh(Interval|Packets|Bytes)");
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printf(" Remain");
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printf("\n");
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*banner_printed = 1;
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}
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/* The measured values */
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if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
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sprintf(s1, "%ju", (uintmax_t)bw_meter->bm_measured.b_packets);
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else
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sprintf(s1, "?");
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if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
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sprintf(s2, "%ju", (uintmax_t)bw_meter->bm_measured.b_bytes);
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else
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sprintf(s2, "?");
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sprintf(s0, "%lu.%lu|%s|%s",
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(u_long)bw_meter->bm_start_time.tv_sec,
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(u_long)bw_meter->bm_start_time.tv_usec,
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s1, s2);
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printf(" %-30s", s0);
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/* The type of entry */
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sprintf(s0, "%s", "?");
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if (bw_meter->bm_flags & BW_METER_GEQ)
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sprintf(s0, "%s", ">=");
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else if (bw_meter->bm_flags & BW_METER_LEQ)
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sprintf(s0, "%s", "<=");
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printf(" %-3s", s0);
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/* The threshold values */
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if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
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sprintf(s1, "%ju", (uintmax_t)bw_meter->bm_threshold.b_packets);
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else
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sprintf(s1, "?");
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if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
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sprintf(s2, "%ju", (uintmax_t)bw_meter->bm_threshold.b_bytes);
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else
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sprintf(s2, "?");
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sprintf(s0, "%lu.%lu|%s|%s",
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(u_long)bw_meter->bm_threshold.b_time.tv_sec,
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(u_long)bw_meter->bm_threshold.b_time.tv_usec,
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s1, s2);
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printf(" %-30s", s0);
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/* Remaining time */
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timeradd(&bw_meter->bm_start_time,
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&bw_meter->bm_threshold.b_time, &end);
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if (timercmp(&now, &end, <=)) {
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timersub(&end, &now, &delta);
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sprintf(s3, "%lu.%lu",
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(u_long)delta.tv_sec,
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(u_long)delta.tv_usec);
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} else {
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/* Negative time */
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timersub(&now, &end, &delta);
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sprintf(s3, "-%lu.%lu",
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(u_long)delta.tv_sec,
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(u_long)delta.tv_usec);
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}
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printf(" %s", s3);
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printf("\n");
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}
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static void
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print_mfc(struct mfc *m, int maxvif, int *banner_printed)
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{
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struct bw_meter bw_meter, *bwm;
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int bw_banner_printed;
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int error;
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vifi_t vifi;
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bw_banner_printed = 0;
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if (! *banner_printed) {
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printf("\nIPv4 Multicast Forwarding Table\n"
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" Origin Group "
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" Packets In-Vif Out-Vifs:Ttls\n");
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*banner_printed = 1;
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}
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printf(" %-15.15s", routename(m->mfc_origin.s_addr));
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printf(" %-15.15s", routename(m->mfc_mcastgrp.s_addr));
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printf(" %9lu", m->mfc_pkt_cnt);
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printf(" %3d ", m->mfc_parent);
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for (vifi = 0; vifi <= maxvif; vifi++) {
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if (m->mfc_ttls[vifi] > 0)
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printf(" %u:%u", vifi, m->mfc_ttls[vifi]);
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}
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printf("\n");
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/*
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* XXX We break the rules and try to use KVM to read the
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* bandwidth meters, they are not retrievable via sysctl yet.
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*/
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bwm = m->mfc_bw_meter;
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while (bwm != NULL) {
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error = kread((u_long)bwm, (char *)&bw_meter,
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sizeof(bw_meter));
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if (error)
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break;
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print_bw_meter(&bw_meter, &bw_banner_printed);
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bwm = bw_meter.bm_mfc_next;
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}
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}
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void
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mroutepr(u_long pmfchashtbl, u_long pmfctablesize, u_long pviftbl)
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{
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struct vif viftable[MAXVIFS];
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struct vif *v;
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struct mfc *m;
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int banner_printed;
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int saved_numeric_addr;
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size_t len;
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vifi_t vifi, maxvif;
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saved_numeric_addr = numeric_addr;
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numeric_addr = 1;
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/*
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* TODO:
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* The VIF table will move to hanging off the struct if_info for
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* each IPv4 configured interface. Currently it is statically
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* allocated, and retrieved either using KVM or an opaque SYSCTL.
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*
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* This can't happen until the API documented in multicast(4)
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* is itself refactored. The historical reason why VIFs use
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* a separate ifindex space is entirely due to the legacy
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* capability of the MROUTING code to create IPIP tunnels on
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* the fly to support DVMRP. When gif(4) became available, this
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* functionality was deprecated, as PIM does not use it.
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*/
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maxvif = 0;
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len = sizeof(viftable);
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if (live) {
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if (sysctlbyname("net.inet.ip.viftable", viftable, &len, NULL,
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0) < 0) {
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warn("sysctl: net.inet.ip.viftable");
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return;
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}
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} else
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kread(pviftbl, (char *)viftable, sizeof(viftable));
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banner_printed = 0;
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for (vifi = 0, v = viftable; vifi < MAXVIFS; ++vifi, ++v) {
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if (v->v_lcl_addr.s_addr == 0)
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continue;
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maxvif = vifi;
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if (!banner_printed) {
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printf("\nIPv4 Virtual Interface Table\n"
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" Vif Thresh Local-Address "
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"Remote-Address Pkts-In Pkts-Out\n");
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banner_printed = 1;
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}
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printf(" %2u %6u %-15.15s",
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/* opposite math of add_vif() */
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vifi, v->v_threshold,
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routename(v->v_lcl_addr.s_addr));
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printf(" %-15.15s", (v->v_flags & VIFF_TUNNEL) ?
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routename(v->v_rmt_addr.s_addr) : "");
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printf(" %9lu %9lu\n", v->v_pkt_in, v->v_pkt_out);
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}
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if (!banner_printed)
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printf("\nIPv4 Virtual Interface Table is empty\n");
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banner_printed = 0;
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/*
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* TODO:
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* The MFC table will move into the AF_INET radix trie in future.
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* In 8.x, it becomes a dynamically allocated structure referenced
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* by a hashed LIST, allowing more than 256 entries w/o kernel tuning.
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*
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* If retrieved via opaque SYSCTL, the kernel will coalesce it into
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* a static table for us.
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* If retrieved via KVM, the hash list pointers must be followed.
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*/
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if (live) {
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struct mfc *mfctable;
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len = 0;
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if (sysctlbyname("net.inet.ip.mfctable", NULL, &len, NULL,
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0) < 0) {
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warn("sysctl: net.inet.ip.mfctable");
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return;
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}
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mfctable = malloc(len);
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if (mfctable == NULL) {
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warnx("malloc %lu bytes", (u_long)len);
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return;
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}
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if (sysctlbyname("net.inet.ip.mfctable", mfctable, &len, NULL,
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0) < 0) {
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free(mfctable);
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warn("sysctl: net.inet.ip.mfctable");
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return;
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}
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m = mfctable;
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while (len >= sizeof(*m)) {
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print_mfc(m++, maxvif, &banner_printed);
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len -= sizeof(*m);
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}
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if (len != 0)
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warnx("print_mfc: %lu trailing bytes", (u_long)len);
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free(mfctable);
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} else {
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LIST_HEAD(, mfc) *mfchashtbl;
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u_long i, mfctablesize;
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struct mfc mfc;
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int error;
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error = kread(pmfctablesize, (char *)&mfctablesize,
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sizeof(u_long));
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if (error) {
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warn("kread: mfctablesize");
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return;
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}
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len = sizeof(*mfchashtbl) * mfctablesize;
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mfchashtbl = malloc(len);
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if (mfchashtbl == NULL) {
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warnx("malloc %lu bytes", (u_long)len);
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return;
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}
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kread(pmfchashtbl, (char *)&mfchashtbl, len);
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for (i = 0; i < mfctablesize; i++) {
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LIST_FOREACH(m, &mfchashtbl[i], mfc_hash) {
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kread((u_long)m, (char *)&mfc, sizeof(mfc));
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print_mfc(m, maxvif, &banner_printed);
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}
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}
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free(mfchashtbl);
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}
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if (!banner_printed)
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printf("\nIPv4 Multicast Forwarding Table is empty\n");
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printf("\n");
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numeric_addr = saved_numeric_addr;
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}
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void
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mrt_stats(u_long mstaddr)
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{
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struct mrtstat mrtstat;
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size_t len = sizeof mrtstat;
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if (live) {
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if (sysctlbyname("net.inet.ip.mrtstat", &mrtstat, &len, NULL,
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0) < 0) {
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warn("sysctl: net.inet.ip.mrtstat");
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return;
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}
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} else
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kread(mstaddr, (char *)&mrtstat, sizeof(mrtstat));
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printf("IPv4 multicast forwarding:\n");
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#define p(f, m) if (mrtstat.f || sflag <= 1) \
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printf(m, mrtstat.f, plural(mrtstat.f))
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#define p2(f, m) if (mrtstat.f || sflag <= 1) \
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printf(m, mrtstat.f, plurales(mrtstat.f))
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p(mrts_mfc_lookups, "\t%lu multicast forwarding cache lookup%s\n");
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p2(mrts_mfc_misses, "\t%lu multicast forwarding cache miss%s\n");
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p(mrts_upcalls, "\t%lu upcall%s to multicast routing daemon\n");
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p(mrts_upq_ovflw, "\t%lu upcall queue overflow%s\n");
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p(mrts_upq_sockfull,
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"\t%lu upcall%s dropped due to full socket buffer\n");
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p(mrts_cache_cleanups, "\t%lu cache cleanup%s\n");
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p(mrts_no_route, "\t%lu datagram%s with no route for origin\n");
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p(mrts_bad_tunnel, "\t%lu datagram%s arrived with bad tunneling\n");
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p(mrts_cant_tunnel, "\t%lu datagram%s could not be tunneled\n");
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p(mrts_wrong_if, "\t%lu datagram%s arrived on wrong interface\n");
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p(mrts_drop_sel, "\t%lu datagram%s selectively dropped\n");
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p(mrts_q_overflow, "\t%lu datagram%s dropped due to queue overflow\n");
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p(mrts_pkt2large, "\t%lu datagram%s dropped for being too large\n");
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#undef p2
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#undef p
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}
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