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this was moved to usr.bin ages ago

This commit is contained in:
pooka 2011-03-21 15:47:53 +00:00
parent 3ce23e1c1e
commit 20c88ef126
1 changed files with 0 additions and 168 deletions
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168
sys/rump/net/lib/libshmif/dumpbus.c
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@ -1,168 +0,0 @@
/* $NetBSD: dumpbus.c,v 1.10 2010/11/15 22:49:33 pooka Exp $ */
/*
* Little utility to convert shmif bus traffic to a pcap file
* which can be then examined with tcpdump -r, wireshark, etc.
*/
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <assert.h>
#include <err.h>
#include <fcntl.h>
#include <pcap.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "shmifvar.h"
#include "shmif_busops.c"
static void
usage(void)
{
fprintf(stderr, "usage: a.out [-h] [-p pcapfile] buspath\n");
exit(1);
}
#define BUFSIZE 64*1024
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, pfd, i, ch;
int bonus;
char *buf;
bool hflag = false;
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)
errx(1, "%s not a shmif bus", argv[0]);
if (bmem->shm_version != SHMIF_VERSION)
errx(1, "bus vesrsion %d, program %d",
bmem->shm_version, SHMIF_VERSION);
printf("bus version %d, lock: %d, generation: %" PRIu64
", firstoff: 0x%04x, lastoff: 0x%04x\n",
bmem->shm_version, bmem->shm_lock, bmem->shm_gen,
bmem->shm_first, bmem->shm_last);
if (hflag)
exit(0);
if (pcapfile) {
struct pcap_file_header phdr;
if (strcmp(pcapfile, "-") == 0) {
pfd = STDOUT_FILENO;
} else {
pfd = open(pcapfile, O_RDWR | O_CREAT | O_TRUNC, 0777);
if (pfd == -1)
err(1, "create pcap dump");
}
memset(&phdr, 0, sizeof(phdr));
phdr.magic = 0xa1b2c3d4; /* tcpdump magic */
phdr.version_major = PCAP_VERSION_MAJOR;
phdr.version_minor = PCAP_VERSION_MINOR;
phdr.snaplen = 1518;
phdr.linktype = DLT_EN10MB;
if (write(pfd, &phdr, sizeof(phdr)) != sizeof(phdr))
err(1, "phdr write");
}
curbus = bmem->shm_first;
buslast = 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;
struct shmif_pkthdr sp;
uint32_t oldoff;
bool wrap;
wrap = false;
oldoff = curbus;
curbus = shmif_busread(bmem, &sp, oldoff, sizeof(sp), &wrap);
if (wrap)
bonus = 0;
if (sp.sp_len == 0)
continue;
printf("packet %d, offset 0x%04x, length 0x%04x, ts %d/%06d\n",
i++, curbus, sp.sp_len, sp.sp_sec, sp.sp_usec);
if (!pcapfile || sp.sp_len == 0) {
curbus = shmif_busread(bmem,
buf, curbus, sp.sp_len, &wrap);
if (wrap)
bonus = 0;
continue;
}
memset(&packhdr, 0, sizeof(packhdr));
packhdr.caplen = packhdr.len = sp.sp_len;
packhdr.ts.tv_sec = sp.sp_sec;
packhdr.ts.tv_usec = sp.sp_usec;
if (write(pfd, &packhdr, sizeof(packhdr)) != sizeof(packhdr))
err(1, "error writing packethdr");
curbus = shmif_busread(bmem, buf, curbus, sp.sp_len, &wrap);
if (write(pfd, buf, sp.sp_len) != sp.sp_len)
err(1, "write packet");
if (wrap)
bonus = 0;
}
return 0;
}