23dfcd7408
This gets rid of homegrown hacks and puts all probes in one place. Tested for NetBSD (build.sh + anita) and Linux (buildrump.sh)
283 lines
6.4 KiB
C
283 lines
6.4 KiB
C
/* $NetBSD: shmif_dumpbus.c,v 1.18 2014/11/04 19:05:17 pooka Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2010 Antti Kantee. 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 ``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.
|
|
*/
|
|
|
|
/*
|
|
* Convert shmif bus traffic to a pcap file which can be then
|
|
* examined with tcpdump -r, wireshark, etc.
|
|
*/
|
|
|
|
#include <rump/rumpuser_port.h>
|
|
|
|
#ifndef lint
|
|
__RCSID("$NetBSD: shmif_dumpbus.c,v 1.18 2014/11/04 19:05:17 pooka Exp $");
|
|
#endif /* !lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/stat.h>
|
|
#ifdef __NetBSD__
|
|
#include <sys/bswap.h>
|
|
#endif
|
|
|
|
#include <assert.h>
|
|
#include <err.h>
|
|
#include <fcntl.h>
|
|
#include <inttypes.h>
|
|
#include <pcap.h>
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "shmifvar.h"
|
|
|
|
__dead static void
|
|
usage(void)
|
|
{
|
|
|
|
#ifndef HAVE_GETPROGNAME
|
|
#define getprogname() "shmif_dumpbus"
|
|
#endif
|
|
|
|
fprintf(stderr, "usage: %s [-h] [-p pcapfile] buspath\n",getprogname());
|
|
exit(1);
|
|
}
|
|
|
|
#define BUFSIZE 64*1024
|
|
|
|
/*
|
|
* byte swapdom
|
|
*/
|
|
static uint32_t
|
|
swp32(uint32_t x)
|
|
{
|
|
uint32_t v;
|
|
|
|
v = (((x) & 0xff000000) >> 24) |
|
|
(((x) & 0x00ff0000) >> 8) |
|
|
(((x) & 0x0000ff00) << 8) |
|
|
(((x) & 0x000000ff) << 24);
|
|
return v;
|
|
}
|
|
|
|
static uint64_t
|
|
swp64(uint64_t x)
|
|
{
|
|
uint64_t v;
|
|
|
|
v = (((x) & 0xff00000000000000ull) >> 56) |
|
|
(((x) & 0x00ff000000000000ull) >> 40) |
|
|
(((x) & 0x0000ff0000000000ull) >> 24) |
|
|
(((x) & 0x000000ff00000000ull) >> 8) |
|
|
(((x) & 0x00000000ff000000ull) << 8) |
|
|
(((x) & 0x0000000000ff0000ull) << 24) |
|
|
(((x) & 0x000000000000ff00ull) << 40) |
|
|
(((x) & 0x00000000000000ffull) << 56);
|
|
return v;
|
|
}
|
|
|
|
#define FIXENDIAN32(x) (doswap ? swp32(x) : (x))
|
|
#define FIXENDIAN64(x) (doswap ? swp64(x) : (x))
|
|
|
|
/* compat for bus version 2 */
|
|
struct shmif_pkthdr2 {
|
|
uint32_t sp_len;
|
|
|
|
uint32_t sp_sec;
|
|
uint32_t sp_usec;
|
|
};
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
struct stat sb;
|
|
void *busmem;
|
|
const char *pcapfile = NULL;
|
|
uint32_t curbus, buslast;
|
|
struct shmif_mem *bmem;
|
|
int fd, i, ch;
|
|
int bonus;
|
|
char *buf;
|
|
bool hflag = false, doswap = false;
|
|
pcap_dumper_t *pdump;
|
|
FILE *dumploc = stdout;
|
|
int useversion;
|
|
|
|
setprogname(argv[0]);
|
|
while ((ch = getopt(argc, argv, "hp:")) != -1) {
|
|
switch (ch) {
|
|
case 'h':
|
|
hflag = true;
|
|
break;
|
|
case 'p':
|
|
pcapfile = optarg;
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc != 1)
|
|
usage();
|
|
|
|
buf = malloc(BUFSIZE);
|
|
if (buf == NULL)
|
|
err(1, "malloc");
|
|
|
|
fd = open(argv[0], O_RDONLY);
|
|
if (fd == -1)
|
|
err(1, "open bus");
|
|
|
|
if (fstat(fd, &sb) == -1)
|
|
err(1, "stat");
|
|
|
|
busmem = mmap(NULL, sb.st_size, PROT_READ, MAP_FILE|MAP_SHARED, fd, 0);
|
|
if (busmem == MAP_FAILED)
|
|
err(1, "mmap");
|
|
bmem = busmem;
|
|
|
|
if (bmem->shm_magic != SHMIF_MAGIC) {
|
|
if (bmem->shm_magic != swp32(SHMIF_MAGIC))
|
|
errx(1, "%s not a shmif bus", argv[0]);
|
|
doswap = true;
|
|
}
|
|
if (FIXENDIAN32(bmem->shm_version) != SHMIF_VERSION) {
|
|
if (FIXENDIAN32(bmem->shm_version) != 2) {
|
|
errx(1, "bus version %d, program %d",
|
|
FIXENDIAN32(bmem->shm_version), SHMIF_VERSION);
|
|
}
|
|
useversion = 2;
|
|
} else {
|
|
useversion = 3;
|
|
}
|
|
|
|
if (pcapfile && strcmp(pcapfile, "-") == 0)
|
|
dumploc = stderr;
|
|
|
|
fprintf(dumploc, "bus version %d, lock: %d, generation: %" PRIu64
|
|
", firstoff: 0x%04x, lastoff: 0x%04x\n",
|
|
FIXENDIAN32(bmem->shm_version), FIXENDIAN32(bmem->shm_lock),
|
|
FIXENDIAN64(bmem->shm_gen),
|
|
FIXENDIAN32(bmem->shm_first), FIXENDIAN32(bmem->shm_last));
|
|
|
|
if (hflag)
|
|
exit(0);
|
|
|
|
if (pcapfile) {
|
|
pcap_t *pcap = pcap_open_dead(DLT_EN10MB, 1518);
|
|
pdump = pcap_dump_open(pcap, pcapfile);
|
|
if (pdump == NULL)
|
|
err(1, "cannot open pcap dump file");
|
|
} else {
|
|
/* XXXgcc */
|
|
pdump = NULL;
|
|
}
|
|
|
|
curbus = FIXENDIAN32(bmem->shm_first);
|
|
buslast = FIXENDIAN32(bmem->shm_last);
|
|
if (curbus == BUSMEM_DATASIZE)
|
|
curbus = 0;
|
|
|
|
bonus = 0;
|
|
if (buslast < curbus)
|
|
bonus = 1;
|
|
|
|
i = 0;
|
|
|
|
while (curbus <= buslast || bonus) {
|
|
struct pcap_pkthdr packhdr;
|
|
uint32_t oldoff;
|
|
uint32_t curlen;
|
|
uint32_t sp_sec, sp_usec, sp_len;
|
|
bool wrap;
|
|
|
|
assert(curbus < sb.st_size);
|
|
|
|
wrap = false;
|
|
oldoff = curbus;
|
|
|
|
if (useversion == 3) {
|
|
struct shmif_pkthdr sp;
|
|
|
|
curbus = shmif_busread(bmem,
|
|
&sp, oldoff, sizeof(sp), &wrap);
|
|
sp_len = FIXENDIAN32(sp.sp_len);
|
|
sp_sec = FIXENDIAN32(sp.sp_sec);
|
|
sp_usec = FIXENDIAN32(sp.sp_usec);
|
|
} else {
|
|
struct shmif_pkthdr2 sp2;
|
|
|
|
curbus = shmif_busread(bmem,
|
|
&sp2, oldoff, sizeof(sp2), &wrap);
|
|
sp_len = FIXENDIAN32(sp2.sp_len);
|
|
sp_sec = FIXENDIAN32(sp2.sp_sec);
|
|
sp_usec = FIXENDIAN32(sp2.sp_usec);
|
|
}
|
|
if (wrap)
|
|
bonus = 0;
|
|
|
|
assert(curbus < sb.st_size);
|
|
curlen = sp_len;
|
|
|
|
if (curlen == 0) {
|
|
continue;
|
|
}
|
|
|
|
fprintf(dumploc, "packet %d, offset 0x%04x, length 0x%04x, "
|
|
"ts %d/%06d\n", i++, curbus, curlen,
|
|
sp_sec, sp_usec);
|
|
|
|
if (!pcapfile) {
|
|
curbus = shmif_busread(bmem,
|
|
buf, curbus, curlen, &wrap);
|
|
if (wrap)
|
|
bonus = 0;
|
|
continue;
|
|
}
|
|
|
|
memset(&packhdr, 0, sizeof(packhdr));
|
|
packhdr.caplen = packhdr.len = curlen;
|
|
packhdr.ts.tv_sec = sp_sec;
|
|
packhdr.ts.tv_usec = sp_usec;
|
|
assert(curlen <= BUFSIZE);
|
|
|
|
curbus = shmif_busread(bmem, buf, curbus, curlen, &wrap);
|
|
pcap_dump((u_char *)pdump, &packhdr, (u_char *)buf);
|
|
if (wrap)
|
|
bonus = 0;
|
|
}
|
|
|
|
if (pcapfile)
|
|
pcap_dump_close(pdump);
|
|
|
|
return 0;
|
|
}
|