a6094d81bb
CC: stdlib/lib_srand.c "candump.c", line 231: warning #550-D: variable "ret" was set but never used
int opt, ret;
^
"candump.c", line 101: warning #550-D: variable "cmdlinename" was set but
never used
static char *cmdlinename[MAXSOCK];
^
Signed-off-by: guoshichao <guoshichao@xiaomi.com>
808 lines
23 KiB
C
808 lines
23 KiB
C
/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
|
|
/*
|
|
* candump.c
|
|
*
|
|
* Copyright (c) 2002-2009 Volkswagen Group Electronic Research
|
|
* 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. Neither the name of Volkswagen nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* Alternatively, provided that this notice is retained in full, this
|
|
* software may be distributed under the terms of the GNU General
|
|
* Public License ("GPL") version 2, in which case the provisions of the
|
|
* GPL apply INSTEAD OF those given above.
|
|
*
|
|
* The provided data structures and external interfaces from this code
|
|
* are not restricted to be used by modules with a GPL compatible license.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
|
|
* OWNER 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.
|
|
*
|
|
* Send feedback to <linux-can@vger.kernel.org>
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <inttypes.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <signal.h>
|
|
#include <ctype.h>
|
|
#include <libgen.h>
|
|
#include <time.h>
|
|
#include <errno.h>
|
|
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/uio.h>
|
|
#include <net/if.h>
|
|
|
|
#include <nuttx/can.h>
|
|
#include <netpacket/can.h>
|
|
|
|
#include "terminal.h"
|
|
#include "lib.h"
|
|
|
|
/* for hardware timestamps - since Linux 2.6.30 */
|
|
#ifndef SO_TIMESTAMPING
|
|
#define SO_TIMESTAMPING 37
|
|
#endif
|
|
|
|
/* from #include <linux/net_tstamp.h> - since Linux 2.6.30 */
|
|
#define SOF_TIMESTAMPING_SOFTWARE (1<<4)
|
|
#define SOF_TIMESTAMPING_RX_SOFTWARE (1<<3)
|
|
#define SOF_TIMESTAMPING_RAW_HARDWARE (1<<6)
|
|
|
|
#define MAXSOCK 16 /* max. number of CAN interfaces given on the cmdline */
|
|
#define MAXIFNAMES 30 /* size of receive name index to omit ioctls */
|
|
#define MAXCOL 6 /* number of different colors for colorized output */
|
|
#define ANYDEV "any" /* name of interface to receive from any CAN interface */
|
|
#define ANL "\r\n" /* newline in ASC mode */
|
|
|
|
#define SILENT_INI 42 /* detect user setting on commandline */
|
|
#define SILENT_OFF 0 /* no silent mode */
|
|
#define SILENT_ANI 1 /* silent mode with animation */
|
|
#define SILENT_ON 2 /* silent mode (completely silent) */
|
|
|
|
#define BOLD ATTBOLD
|
|
#define RED ATTBOLD FGRED
|
|
#define GREEN ATTBOLD FGGREEN
|
|
#define YELLOW ATTBOLD FGYELLOW
|
|
#define BLUE ATTBOLD FGBLUE
|
|
#define MAGENTA ATTBOLD FGMAGENTA
|
|
#define CYAN ATTBOLD FGCYAN
|
|
|
|
const char col_on [MAXCOL][19] = {BLUE, RED, GREEN, BOLD, MAGENTA, CYAN};
|
|
const char col_off [] = ATTRESET;
|
|
|
|
static __u32 dropcnt[MAXSOCK];
|
|
static __u32 last_dropcnt[MAXSOCK];
|
|
static char devname[MAXIFNAMES][IFNAMSIZ+1];
|
|
static int dindex[MAXIFNAMES];
|
|
static int max_devname_len; /* to prevent frazzled device name output */
|
|
const int canfd_on = 1;
|
|
|
|
#define MAXANI 4
|
|
const char anichar[MAXANI] = {'|', '/', '-', '\\'};
|
|
const char extra_m_info[4][4] = {"- -", "B -", "- E", "B E"};
|
|
|
|
static volatile int running = 1;
|
|
|
|
static void print_usage(char *prg)
|
|
{
|
|
fprintf(stderr, "%s - dump CAN bus traffic.\n", prg);
|
|
fprintf(stderr, "\nUsage: %s [options] <CAN interface>+\n", prg);
|
|
fprintf(stderr, " (use CTRL-C to terminate %s)\n\n", prg);
|
|
fprintf(stderr, "Options:\n");
|
|
fprintf(stderr, " -t <type> (timestamp: (a)bsolute/(d)elta/(z)ero/(A)bsolute w date)\n");
|
|
fprintf(stderr, " -H (read hardware timestamps instead of system timestamps)\n");
|
|
fprintf(stderr, " -c (increment color mode level)\n");
|
|
fprintf(stderr, " -i (binary output - may exceed 80 chars/line)\n");
|
|
fprintf(stderr, " -a (enable additional ASCII output)\n");
|
|
fprintf(stderr, " -S (swap byte order in printed CAN data[] - marked with '%c' )\n", SWAP_DELIMITER);
|
|
fprintf(stderr, " -s <level> (silent mode - %d: off (default) %d: animation %d: silent)\n", SILENT_OFF, SILENT_ANI, SILENT_ON);
|
|
fprintf(stderr, " -l (log CAN-frames into file. Sets '-s %d' by default)\n", SILENT_ON);
|
|
fprintf(stderr, " -L (use log file format on stdout)\n");
|
|
fprintf(stderr, " -n <count> (terminate after reception of <count> CAN frames)\n");
|
|
fprintf(stderr, " -r <size> (set socket receive buffer to <size>)\n");
|
|
fprintf(stderr, " -D (Don't exit if a \"detected\" can device goes down.\n");
|
|
fprintf(stderr, " -d (monitor dropped CAN frames)\n");
|
|
fprintf(stderr, " -e (dump CAN error frames in human-readable format)\n");
|
|
fprintf(stderr, " -x (print extra message infos, rx/tx brs esi)\n");
|
|
fprintf(stderr, " -T <msecs> (terminate after <msecs> without any reception)\n");
|
|
fprintf(stderr, "\n");
|
|
fprintf(stderr, "Up to %d CAN interfaces with optional filter sets can be specified\n", MAXSOCK);
|
|
fprintf(stderr, "on the commandline in the form: <ifname>[,filter]*\n");
|
|
fprintf(stderr, "\nFilters:\n");
|
|
fprintf(stderr, " Comma separated filters can be specified for each given CAN interface:\n");
|
|
fprintf(stderr, " <can_id>:<can_mask>\n (matches when <received_can_id> & mask == can_id & mask)\n");
|
|
fprintf(stderr, " <can_id>~<can_mask>\n (matches when <received_can_id> & mask != can_id & mask)\n");
|
|
fprintf(stderr, " #<error_mask>\n (set error frame filter, see include/linux/can/error.h)\n");
|
|
fprintf(stderr, " [j|J]\n (join the given CAN filters - logical AND semantic)\n");
|
|
fprintf(stderr, "\nCAN IDs, masks and data content are given and expected in hexadecimal values.\n");
|
|
fprintf(stderr, "When the can_id is 8 digits long the CAN_EFF_FLAG is set for 29 bit EFF format.\n");
|
|
fprintf(stderr, "Without any given filter all data frames are received ('0:0' default filter).\n");
|
|
fprintf(stderr, "\nUse interface name '%s' to receive from all CAN interfaces.\n", ANYDEV);
|
|
fprintf(stderr, "\nExamples:\n");
|
|
fprintf(stderr, "%s -c -c -ta can0,123:7FF,400:700,#000000FF can2,400~7F0 can3 can8\n\n", prg);
|
|
fprintf(stderr, "%s -l any,0~0,#FFFFFFFF\n (log only error frames but no(!) data frames)\n", prg);
|
|
fprintf(stderr, "%s -l any,0:0,#FFFFFFFF\n (log error frames and also all data frames)\n", prg);
|
|
fprintf(stderr, "%s vcan2,12345678:DFFFFFFF\n (match only for extended CAN ID 12345678)\n", prg);
|
|
fprintf(stderr, "%s vcan2,123:7FF\n (matches CAN ID 123 - including EFF and RTR frames)\n", prg);
|
|
fprintf(stderr, "%s vcan2,123:C00007FF\n (matches CAN ID 123 - only SFF and non-RTR frames)\n", prg);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
void sigterm(int signo)
|
|
{
|
|
running = 0;
|
|
}
|
|
|
|
int idx2dindex(int ifidx, int socket) {
|
|
|
|
int i;
|
|
struct ifreq ifr;
|
|
|
|
for (i=0; i < MAXIFNAMES; i++) {
|
|
if (dindex[i] == ifidx)
|
|
return i;
|
|
}
|
|
|
|
/* create new interface index cache entry */
|
|
|
|
/* remove index cache zombies first */
|
|
for (i=0; i < MAXIFNAMES; i++) {
|
|
if (dindex[i]) {
|
|
ifr.ifr_ifindex = dindex[i];
|
|
if (ioctl(socket, SIOCGIFNAME, &ifr) < 0)
|
|
dindex[i] = 0;
|
|
}
|
|
}
|
|
|
|
for (i=0; i < MAXIFNAMES; i++)
|
|
if (!dindex[i]) /* free entry */
|
|
break;
|
|
|
|
if (i == MAXIFNAMES) {
|
|
fprintf(stderr, "Interface index cache only supports %d interfaces.\n",
|
|
MAXIFNAMES);
|
|
exit(1);
|
|
}
|
|
|
|
dindex[i] = ifidx;
|
|
|
|
ifr.ifr_ifindex = ifidx;
|
|
if (ioctl(socket, SIOCGIFNAME, &ifr) < 0)
|
|
perror("SIOCGIFNAME");
|
|
|
|
if (max_devname_len < (int)strlen(ifr.ifr_name))
|
|
max_devname_len = strlen(ifr.ifr_name);
|
|
|
|
strlcpy(devname[i], ifr.ifr_name, sizeof(devname[i]));
|
|
|
|
#ifdef DEBUG
|
|
printf("new index %d (%s)\n", i, devname[i]);
|
|
#endif
|
|
|
|
return i;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
fd_set rdfs;
|
|
int s[MAXSOCK];
|
|
unsigned char timestamp = 0;
|
|
unsigned char hwtimestamp = 0;
|
|
unsigned char down_causes_exit = 1;
|
|
unsigned char dropmonitor = 0;
|
|
unsigned char extra_msg_info = 0;
|
|
unsigned char silent = SILENT_INI;
|
|
unsigned char silentani = 0;
|
|
unsigned char color = 0;
|
|
unsigned char view = 0;
|
|
unsigned char log = 0;
|
|
unsigned char logfrmt = 0;
|
|
int count = 0;
|
|
int rcvbuf_size = 0;
|
|
int opt;
|
|
int currmax, numfilter;
|
|
int join_filter;
|
|
char *ptr, *nptr;
|
|
struct sockaddr_can addr;
|
|
char ctrlmsg[CMSG_SPACE(sizeof(struct timeval) + 3*sizeof(struct timespec) + sizeof(__u32))];
|
|
struct iovec iov;
|
|
struct msghdr msg;
|
|
struct cmsghdr *cmsg;
|
|
struct can_filter *rfilter;
|
|
can_err_mask_t err_mask;
|
|
struct canfd_frame frame;
|
|
int nbytes, i, maxdlen;
|
|
struct ifreq ifr;
|
|
struct timeval tv, last_tv;
|
|
struct timeval timeout, timeout_config = { 0, 0 }, *timeout_current = NULL;
|
|
FILE *logfile = NULL;
|
|
|
|
#if 0 /* NuttX doesn't support these signals */
|
|
signal(SIGTERM, sigterm);
|
|
signal(SIGHUP, sigterm);
|
|
#endif
|
|
signal(SIGINT, sigterm);
|
|
|
|
last_tv.tv_sec = 0;
|
|
last_tv.tv_usec = 0;
|
|
|
|
while ((opt = getopt(argc, argv, "t:HciaSs:lDdxLn:r:heT:?")) != -1) {
|
|
switch (opt) {
|
|
case 't':
|
|
timestamp = optarg[0];
|
|
if ((timestamp != 'a') && (timestamp != 'A') &&
|
|
(timestamp != 'd') && (timestamp != 'z')) {
|
|
fprintf(stderr, "%s: unknown timestamp mode '%c' - ignored\n",
|
|
basename(argv[0]), optarg[0]);
|
|
timestamp = 0;
|
|
}
|
|
break;
|
|
|
|
case 'H':
|
|
hwtimestamp = 1;
|
|
break;
|
|
|
|
case 'c':
|
|
color++;
|
|
break;
|
|
|
|
case 'i':
|
|
view |= CANLIB_VIEW_BINARY;
|
|
break;
|
|
|
|
case 'a':
|
|
view |= CANLIB_VIEW_ASCII;
|
|
break;
|
|
|
|
case 'S':
|
|
view |= CANLIB_VIEW_SWAP;
|
|
break;
|
|
|
|
case 'e':
|
|
view |= CANLIB_VIEW_ERROR;
|
|
break;
|
|
|
|
case 's':
|
|
silent = atoi(optarg);
|
|
if (silent > SILENT_ON) {
|
|
print_usage(basename(argv[0]));
|
|
exit(1);
|
|
}
|
|
break;
|
|
|
|
case 'l':
|
|
log = 1;
|
|
break;
|
|
|
|
case 'D':
|
|
down_causes_exit = 0;
|
|
break;
|
|
|
|
case 'd':
|
|
dropmonitor = 1;
|
|
break;
|
|
|
|
case 'x':
|
|
extra_msg_info = 1;
|
|
break;
|
|
|
|
case 'L':
|
|
logfrmt = 1;
|
|
break;
|
|
|
|
case 'n':
|
|
count = atoi(optarg);
|
|
if (count < 1) {
|
|
print_usage(basename(argv[0]));
|
|
exit(1);
|
|
}
|
|
break;
|
|
|
|
case 'r':
|
|
rcvbuf_size = atoi(optarg);
|
|
if (rcvbuf_size < 1) {
|
|
print_usage(basename(argv[0]));
|
|
exit(1);
|
|
}
|
|
break;
|
|
|
|
case 'T':
|
|
errno = 0;
|
|
timeout_config.tv_usec = strtol(optarg, NULL, 0);
|
|
if (errno != 0) {
|
|
print_usage(basename(argv[0]));
|
|
exit(1);
|
|
}
|
|
timeout_config.tv_sec = timeout_config.tv_usec / 1000;
|
|
timeout_config.tv_usec = (timeout_config.tv_usec % 1000) * 1000;
|
|
timeout_current = &timeout;
|
|
break;
|
|
default:
|
|
print_usage(basename(argv[0]));
|
|
exit(1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (optind == argc) {
|
|
print_usage(basename(argv[0]));
|
|
exit(0);
|
|
}
|
|
|
|
if (logfrmt && view) {
|
|
fprintf(stderr, "Log file format selected: Please disable ASCII/BINARY/SWAP options!\n");
|
|
exit(0);
|
|
}
|
|
|
|
if (silent == SILENT_INI) {
|
|
if (log) {
|
|
fprintf(stderr, "Disabled standard output while logging.\n");
|
|
silent = SILENT_ON; /* disable output on stdout */
|
|
} else
|
|
silent = SILENT_OFF; /* default output */
|
|
}
|
|
|
|
currmax = argc - optind; /* find real number of CAN devices */
|
|
|
|
if (currmax > MAXSOCK) {
|
|
fprintf(stderr, "More than %d CAN devices given on commandline!\n", MAXSOCK);
|
|
return 1;
|
|
}
|
|
|
|
for (i=0; i < currmax; i++) {
|
|
|
|
ptr = argv[optind+i];
|
|
nptr = strchr(ptr, ',');
|
|
|
|
#ifdef DEBUG
|
|
printf("open %d '%s'.\n", i, ptr);
|
|
#endif
|
|
|
|
s[i] = socket(PF_CAN, SOCK_RAW, CAN_RAW);
|
|
if (s[i] < 0) {
|
|
perror("socket");
|
|
return 1;
|
|
}
|
|
|
|
if (nptr)
|
|
nbytes = nptr - ptr; /* interface name is up the first ',' */
|
|
else
|
|
nbytes = strlen(ptr); /* no ',' found => no filter definitions */
|
|
|
|
if (nbytes >= IFNAMSIZ) {
|
|
fprintf(stderr, "name of CAN device '%s' is too long!\n", ptr);
|
|
return 1;
|
|
}
|
|
|
|
if (nbytes > max_devname_len)
|
|
max_devname_len = nbytes; /* for nice printing */
|
|
|
|
addr.can_family = AF_CAN;
|
|
|
|
memset(&ifr.ifr_name, 0, sizeof(ifr.ifr_name));
|
|
strncpy(ifr.ifr_name, ptr, nbytes);
|
|
|
|
#ifdef DEBUG
|
|
printf("using interface name '%s'.\n", ifr.ifr_name);
|
|
#endif
|
|
|
|
if (strcmp(ANYDEV, ifr.ifr_name)) {
|
|
if (ioctl(s[i], SIOCGIFINDEX, &ifr) < 0) {
|
|
perror("SIOCGIFINDEX");
|
|
exit(1);
|
|
}
|
|
addr.can_ifindex = ifr.ifr_ifindex;
|
|
} else
|
|
addr.can_ifindex = 0; /* any can interface */
|
|
|
|
if (nptr) {
|
|
|
|
/* found a ',' after the interface name => check for filters */
|
|
|
|
/* determine number of filters to alloc the filter space */
|
|
numfilter = 0;
|
|
ptr = nptr;
|
|
while (ptr) {
|
|
numfilter++;
|
|
ptr++; /* hop behind the ',' */
|
|
ptr = strchr(ptr, ','); /* exit condition */
|
|
}
|
|
|
|
rfilter = malloc(sizeof(struct can_filter) * numfilter);
|
|
if (!rfilter) {
|
|
fprintf(stderr, "Failed to create filter space!\n");
|
|
return 1;
|
|
}
|
|
|
|
numfilter = 0;
|
|
err_mask = 0;
|
|
join_filter = 0;
|
|
|
|
while (nptr) {
|
|
|
|
ptr = nptr+1; /* hop behind the ',' */
|
|
nptr = strchr(ptr, ','); /* update exit condition */
|
|
|
|
if (sscanf(ptr, "%" SCNx32 ":%" SCNx32,
|
|
&rfilter[numfilter].can_id,
|
|
&rfilter[numfilter].can_mask) == 2) {
|
|
rfilter[numfilter].can_mask &= ~CAN_ERR_FLAG;
|
|
if (*(ptr+8) == ':')
|
|
rfilter[numfilter].can_id |= CAN_EFF_FLAG;
|
|
numfilter++;
|
|
} else if (sscanf(ptr, "%" SCNx32 "~%" SCNx32,
|
|
&rfilter[numfilter].can_id,
|
|
&rfilter[numfilter].can_mask) == 2) {
|
|
rfilter[numfilter].can_id |= CAN_INV_FILTER;
|
|
rfilter[numfilter].can_mask &= ~CAN_ERR_FLAG;
|
|
if (*(ptr+8) == '~')
|
|
rfilter[numfilter].can_id |= CAN_EFF_FLAG;
|
|
numfilter++;
|
|
} else if (*ptr == 'j' || *ptr == 'J') {
|
|
join_filter = 1;
|
|
} else if (sscanf(ptr, "#%" SCNx32, &err_mask) != 1) {
|
|
fprintf(stderr, "Error in filter option parsing: '%s'\n", ptr);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (err_mask)
|
|
setsockopt(s[i], SOL_CAN_RAW, CAN_RAW_ERR_FILTER,
|
|
&err_mask, sizeof(err_mask));
|
|
|
|
if (join_filter && setsockopt(s[i], SOL_CAN_RAW, CAN_RAW_JOIN_FILTERS,
|
|
&join_filter, sizeof(join_filter)) < 0) {
|
|
perror("setsockopt CAN_RAW_JOIN_FILTERS not supported by your Linux Kernel");
|
|
return 1;
|
|
}
|
|
|
|
if (numfilter)
|
|
setsockopt(s[i], SOL_CAN_RAW, CAN_RAW_FILTER,
|
|
rfilter, numfilter * sizeof(struct can_filter));
|
|
|
|
free(rfilter);
|
|
|
|
} /* if (nptr) */
|
|
|
|
/* try to switch the socket into CAN FD mode */
|
|
setsockopt(s[i], SOL_CAN_RAW, CAN_RAW_FD_FRAMES, &canfd_on, sizeof(canfd_on));
|
|
|
|
if (rcvbuf_size) {
|
|
|
|
int curr_rcvbuf_size;
|
|
socklen_t curr_rcvbuf_size_len = sizeof(curr_rcvbuf_size);
|
|
|
|
/* try SO_RCVBUFFORCE first, if we run with CAP_NET_ADMIN */
|
|
if (setsockopt(s[i], SOL_SOCKET, SO_RCVBUFFORCE,
|
|
&rcvbuf_size, sizeof(rcvbuf_size)) < 0) {
|
|
#ifdef DEBUG
|
|
printf("SO_RCVBUFFORCE failed so try SO_RCVBUF ...\n");
|
|
#endif
|
|
if (setsockopt(s[i], SOL_SOCKET, SO_RCVBUF,
|
|
&rcvbuf_size, sizeof(rcvbuf_size)) < 0) {
|
|
perror("setsockopt SO_RCVBUF");
|
|
return 1;
|
|
}
|
|
|
|
if (getsockopt(s[i], SOL_SOCKET, SO_RCVBUF,
|
|
&curr_rcvbuf_size, &curr_rcvbuf_size_len) < 0) {
|
|
perror("getsockopt SO_RCVBUF");
|
|
return 1;
|
|
}
|
|
|
|
/* Only print a warning the first time we detect the adjustment */
|
|
/* n.b.: The wanted size is doubled in Linux in net/sore/sock.c */
|
|
if (!i && curr_rcvbuf_size < rcvbuf_size*2)
|
|
fprintf(stderr, "The socket receive buffer size was "
|
|
"adjusted due to /proc/sys/net/core/rmem_max.\n");
|
|
}
|
|
}
|
|
|
|
if (timestamp || log || logfrmt) {
|
|
|
|
if (hwtimestamp) {
|
|
const int timestamping_flags = (SOF_TIMESTAMPING_SOFTWARE | \
|
|
SOF_TIMESTAMPING_RX_SOFTWARE | \
|
|
SOF_TIMESTAMPING_RAW_HARDWARE);
|
|
|
|
if (setsockopt(s[i], SOL_SOCKET, SO_TIMESTAMPING,
|
|
×tamping_flags, sizeof(timestamping_flags)) < 0) {
|
|
perror("setsockopt SO_TIMESTAMPING is not supported by your Linux kernel");
|
|
return 1;
|
|
}
|
|
} else {
|
|
const int timestamp_on = 1;
|
|
|
|
if (setsockopt(s[i], SOL_SOCKET, SO_TIMESTAMP,
|
|
×tamp_on, sizeof(timestamp_on)) < 0) {
|
|
perror("setsockopt SO_TIMESTAMP");
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (dropmonitor) {
|
|
|
|
const int dropmonitor_on = 1;
|
|
|
|
if (setsockopt(s[i], SOL_SOCKET, SO_RXQ_OVFL,
|
|
&dropmonitor_on, sizeof(dropmonitor_on)) < 0) {
|
|
perror("setsockopt SO_RXQ_OVFL not supported by your Linux Kernel");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (bind(s[i], (struct sockaddr *)&addr, sizeof(addr)) < 0) {
|
|
perror("bind");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (log) {
|
|
time_t currtime;
|
|
struct tm now;
|
|
char fname[83]; /* suggested by -Wformat-overflow= */
|
|
|
|
if (time(&currtime) == (time_t)-1) {
|
|
perror("time");
|
|
return 1;
|
|
}
|
|
|
|
localtime_r(&currtime, &now);
|
|
|
|
sprintf(fname, "candump-%04d-%02d-%02d_%02d%02d%02d.log",
|
|
now.tm_year + 1900,
|
|
now.tm_mon + 1,
|
|
now.tm_mday,
|
|
now.tm_hour,
|
|
now.tm_min,
|
|
now.tm_sec);
|
|
|
|
if (silent != SILENT_ON)
|
|
fprintf(stderr, "Warning: Console output active while logging!\n");
|
|
|
|
fprintf(stderr, "Enabling Logfile '%s'\n", fname);
|
|
|
|
logfile = fopen(fname, "w");
|
|
if (!logfile) {
|
|
perror("logfile");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/* these settings are static and can be held out of the hot path */
|
|
iov.iov_base = &frame;
|
|
msg.msg_name = &addr;
|
|
msg.msg_iov = &iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = &ctrlmsg;
|
|
|
|
while (running) {
|
|
|
|
FD_ZERO(&rdfs);
|
|
for (i=0; i<currmax; i++)
|
|
FD_SET(s[i], &rdfs);
|
|
|
|
if (timeout_current)
|
|
*timeout_current = timeout_config;
|
|
|
|
if ((select(s[currmax-1]+1, &rdfs, NULL, NULL, timeout_current)) <= 0) {
|
|
//perror("select");
|
|
running = 0;
|
|
continue;
|
|
}
|
|
|
|
for (i=0; i<currmax; i++) { /* check all CAN RAW sockets */
|
|
|
|
if (FD_ISSET(s[i], &rdfs)) {
|
|
|
|
int idx;
|
|
|
|
/* these settings may be modified by recvmsg() */
|
|
iov.iov_len = sizeof(frame);
|
|
msg.msg_namelen = sizeof(addr);
|
|
msg.msg_controllen = sizeof(ctrlmsg);
|
|
msg.msg_flags = 0;
|
|
|
|
nbytes = recvmsg(s[i], &msg, 0);
|
|
idx = idx2dindex(addr.can_ifindex, s[i]);
|
|
|
|
if (nbytes < 0) {
|
|
if ((errno == ENETDOWN) && !down_causes_exit) {
|
|
fprintf(stderr, "%s: interface down\n", devname[idx]);
|
|
continue;
|
|
}
|
|
perror("read");
|
|
return 1;
|
|
}
|
|
|
|
if ((size_t)nbytes == CAN_MTU)
|
|
maxdlen = CAN_MAX_DLEN;
|
|
else if ((size_t)nbytes == CANFD_MTU)
|
|
maxdlen = CANFD_MAX_DLEN;
|
|
else {
|
|
fprintf(stderr, "read: incomplete CAN frame\n");
|
|
return 1;
|
|
}
|
|
|
|
if (count && (--count == 0))
|
|
running = 0;
|
|
|
|
for (cmsg = CMSG_FIRSTHDR(&msg);
|
|
cmsg && (cmsg->cmsg_level == SOL_SOCKET);
|
|
cmsg = CMSG_NXTHDR(&msg,cmsg)) {
|
|
if (cmsg->cmsg_type == SO_TIMESTAMP) {
|
|
memcpy(&tv, CMSG_DATA(cmsg), sizeof(tv));
|
|
} else if (cmsg->cmsg_type == SO_TIMESTAMPING) {
|
|
|
|
struct timespec *stamp = (struct timespec *)CMSG_DATA(cmsg);
|
|
|
|
/*
|
|
* stamp[0] is the software timestamp
|
|
* stamp[1] is deprecated
|
|
* stamp[2] is the raw hardware timestamp
|
|
* See chapter 2.1.2 Receive timestamps in
|
|
* linux/Documentation/networking/timestamping.txt
|
|
*/
|
|
tv.tv_sec = stamp[2].tv_sec;
|
|
tv.tv_usec = stamp[2].tv_nsec/1000;
|
|
} else if (cmsg->cmsg_type == SO_RXQ_OVFL)
|
|
memcpy(&dropcnt[i], CMSG_DATA(cmsg), sizeof(__u32));
|
|
}
|
|
|
|
/* check for (unlikely) dropped frames on this specific socket */
|
|
if (dropcnt[i] != last_dropcnt[i]) {
|
|
|
|
__u32 frames = dropcnt[i] - last_dropcnt[i];
|
|
|
|
if (silent != SILENT_ON)
|
|
printf("DROPCOUNT: dropped %" PRId32 " CAN frame%s on '%s' socket (total drops %" PRId32 ")\n",
|
|
(uint32_t)frames, (frames > 1)?"s":"", devname[idx], (uint32_t)dropcnt[i]);
|
|
|
|
if (log)
|
|
fprintf(logfile, "DROPCOUNT: dropped %" PRId32 " CAN frame%s on '%s' socket (total drops %" PRId32 ")\n",
|
|
(uint32_t)frames, (frames > 1)?"s":"", devname[idx], (uint32_t)dropcnt[i]);
|
|
|
|
last_dropcnt[i] = dropcnt[i];
|
|
}
|
|
|
|
/* once we detected a EFF frame indent SFF frames accordingly */
|
|
if (frame.can_id & CAN_EFF_FLAG)
|
|
view |= CANLIB_VIEW_INDENT_SFF;
|
|
|
|
if (log) {
|
|
char buf[CL_CFSZ]; /* max length */
|
|
|
|
/* log CAN frame with absolute timestamp & device */
|
|
sprint_canframe(buf, &frame, 0, maxdlen);
|
|
fprintf(logfile, "(%010ju.%06ld) %*s %s\n",
|
|
(uintmax_t)tv.tv_sec, tv.tv_usec,
|
|
max_devname_len, devname[idx], buf);
|
|
}
|
|
|
|
if ((logfrmt) && (silent == SILENT_OFF)){
|
|
char buf[CL_CFSZ]; /* max length */
|
|
|
|
/* print CAN frame in log file style to stdout */
|
|
sprint_canframe(buf, &frame, 0, maxdlen);
|
|
printf("(%010ju.%06ld) %*s %s\n",
|
|
(uintmax_t)tv.tv_sec, tv.tv_usec,
|
|
max_devname_len, devname[idx], buf);
|
|
goto out_fflush; /* no other output to stdout */
|
|
}
|
|
|
|
if (silent != SILENT_OFF){
|
|
if (silent == SILENT_ANI) {
|
|
printf("%c\b", anichar[silentani%=MAXANI]);
|
|
silentani++;
|
|
}
|
|
goto out_fflush; /* no other output to stdout */
|
|
}
|
|
|
|
printf(" %s", (color>2)?col_on[idx%MAXCOL]:"");
|
|
|
|
switch (timestamp) {
|
|
|
|
case 'a': /* absolute with timestamp */
|
|
printf("(%010ju.%06ld) ",
|
|
(uintmax_t)tv.tv_sec, tv.tv_usec);
|
|
break;
|
|
|
|
case 'A': /* absolute with date */
|
|
{
|
|
struct tm tm;
|
|
char timestring[25];
|
|
|
|
tm = *localtime(&tv.tv_sec);
|
|
strftime(timestring, 24, "%Y-%m-%d %H:%M:%S", &tm);
|
|
printf("(%s.%06ld) ", timestring, tv.tv_usec);
|
|
}
|
|
break;
|
|
|
|
case 'd': /* delta */
|
|
case 'z': /* starting with zero */
|
|
{
|
|
struct timeval diff;
|
|
|
|
if (last_tv.tv_sec == 0) /* first init */
|
|
last_tv = tv;
|
|
diff.tv_sec = tv.tv_sec - last_tv.tv_sec;
|
|
diff.tv_usec = tv.tv_usec - last_tv.tv_usec;
|
|
if (diff.tv_usec < 0)
|
|
diff.tv_sec--, diff.tv_usec += 1000000;
|
|
if (diff.tv_sec < 0)
|
|
diff.tv_sec = diff.tv_usec = 0;
|
|
printf("(%03ju.%06ld) ",
|
|
(uintmax_t)diff.tv_sec, diff.tv_usec);
|
|
|
|
if (timestamp == 'd')
|
|
last_tv = tv; /* update for delta calculation */
|
|
}
|
|
break;
|
|
|
|
default: /* no timestamp output */
|
|
break;
|
|
}
|
|
|
|
printf(" %s", (color && (color<3))?col_on[idx%MAXCOL]:"");
|
|
printf("%*s", max_devname_len, devname[idx]);
|
|
|
|
if (extra_msg_info) {
|
|
|
|
if (msg.msg_flags & MSG_DONTROUTE)
|
|
printf (" TX %s", extra_m_info[frame.flags & 3]);
|
|
else
|
|
printf (" RX %s", extra_m_info[frame.flags & 3]);
|
|
}
|
|
|
|
printf("%s ", (color==1)?col_off:"");
|
|
|
|
fprint_long_canframe(stdout, &frame, NULL, view, maxdlen);
|
|
|
|
printf("%s", (color>1)?col_off:"");
|
|
printf("\n");
|
|
}
|
|
|
|
out_fflush:
|
|
fflush(stdout);
|
|
}
|
|
}
|
|
|
|
for (i=0; i<currmax; i++)
|
|
close(s[i]);
|
|
|
|
if (log)
|
|
fclose(logfile);
|
|
|
|
return 0;
|
|
}
|