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NetBSD/usr.sbin/trsp/trsp.c

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/* $NetBSD: trsp.c,v 1.7 2002/07/20 08:40:21 grant Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Copyright (c) 1985, 1993
* The Regents of the University of California. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT(
"@(#) Copyright (c) 1985, 1993\n\
The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)trsp.c 8.1 (Berkeley) 6/6/93";
#else
__RCSID("$NetBSD: trsp.c,v 1.7 2002/07/20 08:40:21 grant Exp $");
#endif
#endif /* not lint */
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#define PRUREQUESTS
#include <sys/protosw.h>
#include <net/route.h>
#include <net/if.h>
#define TCPSTATES
#include <netinet/tcp_fsm.h>
#define TCPTIMERS
#include <netinet/tcp_timer.h>
#include <netns/ns.h>
#include <netns/sp.h>
#include <netns/idp.h>
#include <netns/spidp.h>
#include <netns/spp_timer.h>
#include <netns/spp_var.h>
#include <netns/ns_pcb.h>
#include <netns/idp_var.h>
#define SANAMES
#include <netns/spp_debug.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include <kvm.h>
#include <nlist.h>
#include <paths.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
u_int32_t ntime;
int sflag;
int tflag;
int jflag;
int aflag;
int zflag;
struct nlist nl[] = {
#define N_SPP_DEBUG 0
{ "_spp_debug" },
#define N_SPP_DEBX 1
{ "_spp_debx" },
{ NULL },
};
struct spp_debug spp_debug[SPP_NDEBUG];
caddr_t spp_pcbs[SPP_NDEBUG];
int spp_debx;
kvm_t *kd;
int main __P((int, char *[]));
void dotrace __P((caddr_t));
int numeric __P((const void *, const void *));
void spp_trace __P((short, short, struct sppcb *, struct sppcb *,
struct spidp *, int));
void usage __P((void));
int
main(argc, argv)
int argc;
char *argv[];
{
int ch, i, npcbs = 0;
char *system, *core, *cp, errbuf[_POSIX2_LINE_MAX];
gid_t egid = getegid();
(void)setegid(getgid());
system = core = NULL;
while ((ch = getopt(argc, argv, "azstjp:N:M:")) != -1) {
switch (ch) {
case 'a':
++aflag;
break;
case 'z':
++zflag;
break;
case 's':
++sflag;
break;
case 't':
++tflag;
break;
case 'j':
++jflag;
break;
case 'p':
if (npcbs >= SPP_NDEBUG)
errx(1, "too many pcbs specified");
errno = 0;
spp_pcbs[npcbs++] = (caddr_t)strtoul(optarg, &cp, 16);
if (*cp != '\0' || errno == ERANGE)
errx(1, "invalid address: %s", optarg);
break;
case 'N':
system = optarg;
break;
case 'M':
core = optarg;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc)
usage();
/*
* Discard setgid privileges if not the running kernel so that bad
* guys can't print interesting stuff from kernel memory.
*/
if (core != NULL || system != NULL)
setgid(getgid());
else
setegid(egid);
kd = kvm_openfiles(system, core, NULL, zflag ? O_RDWR : O_RDONLY,
errbuf);
if (kd == NULL)
errx(1, "can't open kmem: %s", errbuf);
/* get rid of it now anyway */
if (core == NULL && system == NULL)
setgid(getgid());
if (kvm_nlist(kd, nl))
errx(2, "%s: no namelist", system ? system : _PATH_UNIX);
if (kvm_read(kd, nl[N_SPP_DEBX].n_value, &spp_debx,
sizeof(spp_debx)) != sizeof(spp_debx))
errx(3, "spp_debx: %s", kvm_geterr(kd));
printf("spp_debx=%d\n", spp_debx);
if (kvm_read(kd, nl[N_SPP_DEBUG].n_value, spp_debug,
sizeof(spp_debug)) != sizeof(spp_debug))
errx(3, "spp_debug: %s", kvm_geterr(kd));
/*
* Here, we just want to clear out the old trace data and start over.
*/
if (zflag) {
spp_debx = 0;
(void) memset(spp_debug, 0, sizeof(spp_debug));
if (kvm_write(kd, nl[N_SPP_DEBX].n_value, &spp_debx,
sizeof(spp_debx)) != sizeof(spp_debx))
errx(4, "write spp_debx: %s", kvm_geterr(kd));
if (kvm_write(kd, nl[N_SPP_DEBUG].n_value, spp_debug,
sizeof(spp_debug)) != sizeof(spp_debug))
errx(4, "write spp_debug: %s", kvm_geterr(kd));
exit(0);
}
/*
* If no control blocks have been specified, figure
* out how many distinct one we have and summarize
* them in spp_pcbs for sorting the trace records
* below.
*/
if (npcbs == 0) {
for (i = 0; i < SPP_NDEBUG; i++) {
struct spp_debug *sd = &spp_debug[i];
int j;
if (sd->sd_cb == 0)
continue;
for (j = 0; j < npcbs; j++)
if (spp_pcbs[j] == sd->sd_cb)
break;
if (j >= npcbs)
spp_pcbs[npcbs++] = sd->sd_cb;
}
}
qsort(spp_pcbs, npcbs, sizeof (caddr_t), numeric);
if (jflag) {
cp = "";
for (i = 0; i < npcbs; i++) {
printf("%s%lx", cp, (long)spp_pcbs[i]);
cp = ", ";
}
if (*cp)
putchar('\n');
} else {
for (i = 0; i < npcbs; i++) {
printf("\n%lx:\n", (long)spp_pcbs[i]);
dotrace(spp_pcbs[i]);
}
}
exit(0);
}
void
dotrace(sppcb)
caddr_t sppcb;
{
struct spp_debug *sd;
int i;
for (i = spp_debx % SPP_NDEBUG; i < SPP_NDEBUG; i++) {
sd = &spp_debug[i];
if (sppcb && sd->sd_cb != sppcb)
continue;
ntime = ntohl(sd->sd_time);
spp_trace(sd->sd_act, sd->sd_ostate, (struct sppcb *)sd->sd_cb,
&sd->sd_sp, &sd->sd_si, sd->sd_req);
}
for (i = 0; i < spp_debx % SPP_NDEBUG; i++) {
sd = &spp_debug[i];
if (sppcb && sd->sd_cb != sppcb)
continue;
ntime = ntohl(sd->sd_time);
spp_trace(sd->sd_act, sd->sd_ostate, (struct sppcb *)sd->sd_cb,
&sd->sd_sp, &sd->sd_si, sd->sd_req);
}
}
int
numeric(v1, v2)
const void *v1, *v2;
{
const caddr_t *c1 = v1;
const caddr_t *c2 = v2;
int rv;
if (*c1 < *c2)
rv = -1;
else if (*c1 > *c2)
rv = 1;
else
rv = 0;
return (rv);
}
void
spp_trace(act, ostate, asp, sp, si, req)
short act, ostate;
struct sppcb *asp, *sp;
struct spidp *si;
int req;
{
u_int16_t seq, ack, len, alo;
int flags;
char *cp;
if (ostate >= TCP_NSTATES)
ostate = 0;
if (act > SA_DROP)
act = SA_DROP;
printf("\n");
printf("%03d %s:%s", (ntime/10) % 1000, tcpstates[ostate],
sanames[act]);
if (si != 0) {
seq = si->si_seq;
ack = si->si_ack;
alo = si->si_alo;
len = si->si_len;
switch (act) {
case SA_RESPOND:
case SA_OUTPUT:
NTOHS(seq);
NTOHS(ack);
NTOHS(alo);
NTOHS(len);
case SA_INPUT:
case SA_DROP:
if (aflag)
printf("\n\tsna=%s\tdna=%s",
ns_ntoa(si->si_sna), ns_ntoa(si->si_dna));
printf("\n\t");
#define p1(name, f) { \
printf("%s = %x, ", name, f); \
}
p1("seq", seq);
p1("ack", ack);
p1("alo", alo);
p1("len", len);
flags = si->si_cc;
printf("flags=%x", flags);
#define pf(name, f) { \
if (flags & f) { \
printf("%s%s", cp, name); \
cp = ","; \
} \
}
if (flags) {
cp = "<";
pf("SP_SP", SP_SP);
pf("SP_SA", SP_SA);
pf("SP_OB", SP_OB);
pf("SP_EM", SP_EM);
printf(">");
}
printf(", ");
#define p2(name, f) { \
printf("%s = %x, ", name, f); \
}
p2("sid", si->si_sid);
p2("did", si->si_did);
p2("dt", si->si_dt);
printf("\n\tsna=%s\tdna=%s", ns_ntoa(si->si_sna),
ns_ntoa(si->si_dna));
}
}
if(act == SA_USER) {
printf("\treq=%s", prurequests[req&0xff]);
if ((req & 0xff) == PRU_SLOWTIMO)
printf("<%s>", tcptimers[req>>8]);
}
printf(" -> %s", tcpstates[sp->s_state]);
/* print out internal state of sp !?! */
printf("\n");
if (sp == 0)
return;
#define p3(name, f) { \
printf("%s = %x, ", name, f); \
}
if (sflag) {
printf("\t");
p3("rack", sp->s_rack);
p3("ralo", sp->s_ralo);
p3("smax", sp->s_smax);
p3("snxt", sp->s_snxt);
p3("flags", sp->s_flags);
#undef pf
#define pf(name, f) { \
if (flags & f) { \
printf("%s%s", cp, name); \
cp = ","; \
} \
}
flags = sp->s_flags;
if (flags || sp->s_oobflags) {
cp = "<";
pf("ACKNOW", SF_ACKNOW);
pf("DELACK", SF_DELACK);
pf("HI", SF_HI);
pf("HO", SF_HO);
pf("PI", SF_PI);
pf("WIN", SF_WIN);
pf("RXT", SF_RXT);
pf("RVD", SF_RVD);
flags = sp->s_oobflags;
pf("SOOB", SF_SOOB);
pf("IOOB", SF_IOOB);
printf(">");
}
}
/* print out timers? */
if (tflag) {
int i;
cp = "\t";
printf("\n\tTIMERS: ");
p3("idle", sp->s_idle);
p3("force", sp->s_force);
p3("rtseq", sp->s_rtseq);
for (i = 0; i < TCPT_NTIMERS; i++) {
if (sp->s_timer[i] == 0)
continue;
printf("%s%s=%d", cp, tcptimers[i], sp->s_timer[i]);
if (i == TCPT_REXMT)
printf(" (s_rxtshft=%d)", sp->s_rxtshift);
cp = ", ";
}
if (*cp != '\t')
putchar('\n');
}
}
void
usage()
{
fprintf(stderr, "usage: %s [-azstj] [-p hex-address]"
" [-N system] [-M core]\n", getprogname());
exit(1);
}
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