481d4b6e23
This patch is associated with 'https://github.com/apache/nuttx/pull/13048', so it cannot be verified separately by CI. Please help to associate and review it. Thank you! Signed-off-by: gaohedong <gaohedong@xiaomi.com>
807 lines
23 KiB
C
807 lines
23 KiB
C
/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
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/*
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* candump.c
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*
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* Copyright (c) 2002-2009 Volkswagen Group Electronic Research
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* All rights reserved.
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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. Neither the name of Volkswagen 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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* Alternatively, provided that this notice is retained in full, this
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* software may be distributed under the terms of the GNU General
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* Public License ("GPL") version 2, in which case the provisions of the
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* GPL apply INSTEAD OF those given above.
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*
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* The provided data structures and external interfaces from this code
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* are not restricted to be used by modules with a GPL compatible license.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* Send feedback to <linux-can@vger.kernel.org>
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <inttypes.h>
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#include <unistd.h>
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#include <string.h>
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#include <signal.h>
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#include <ctype.h>
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#include <libgen.h>
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#include <time.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/uio.h>
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#include <net/if.h>
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#include <nuttx/can.h>
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#include "terminal.h"
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#include "lib.h"
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/* for hardware timestamps - since Linux 2.6.30 */
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#ifndef SO_TIMESTAMPING
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#define SO_TIMESTAMPING 37
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#endif
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/* from #include <linux/net_tstamp.h> - since Linux 2.6.30 */
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#define SOF_TIMESTAMPING_SOFTWARE (1<<4)
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#define SOF_TIMESTAMPING_RX_SOFTWARE (1<<3)
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#define SOF_TIMESTAMPING_RAW_HARDWARE (1<<6)
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#define MAXSOCK 16 /* max. number of CAN interfaces given on the cmdline */
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#define MAXIFNAMES 30 /* size of receive name index to omit ioctls */
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#define MAXCOL 6 /* number of different colors for colorized output */
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#define ANYDEV "any" /* name of interface to receive from any CAN interface */
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#define ANL "\r\n" /* newline in ASC mode */
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#define SILENT_INI 42 /* detect user setting on commandline */
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#define SILENT_OFF 0 /* no silent mode */
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#define SILENT_ANI 1 /* silent mode with animation */
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#define SILENT_ON 2 /* silent mode (completely silent) */
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#define BOLD ATTBOLD
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#define RED ATTBOLD FGRED
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#define GREEN ATTBOLD FGGREEN
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#define YELLOW ATTBOLD FGYELLOW
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#define BLUE ATTBOLD FGBLUE
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#define MAGENTA ATTBOLD FGMAGENTA
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#define CYAN ATTBOLD FGCYAN
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const char col_on [MAXCOL][19] = {BLUE, RED, GREEN, BOLD, MAGENTA, CYAN};
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const char col_off [] = ATTRESET;
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static __u32 dropcnt[MAXSOCK];
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static __u32 last_dropcnt[MAXSOCK];
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static char devname[MAXIFNAMES][IFNAMSIZ+1];
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static int dindex[MAXIFNAMES];
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static int max_devname_len; /* to prevent frazzled device name output */
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const int canfd_on = 1;
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#define MAXANI 4
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const char anichar[MAXANI] = {'|', '/', '-', '\\'};
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const char extra_m_info[4][4] = {"- -", "B -", "- E", "B E"};
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static volatile int running = 1;
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static void print_usage(char *prg)
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{
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fprintf(stderr, "%s - dump CAN bus traffic.\n", prg);
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fprintf(stderr, "\nUsage: %s [options] <CAN interface>+\n", prg);
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fprintf(stderr, " (use CTRL-C to terminate %s)\n\n", prg);
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fprintf(stderr, "Options:\n");
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fprintf(stderr, " -t <type> (timestamp: (a)bsolute/(d)elta/(z)ero/(A)bsolute w date)\n");
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fprintf(stderr, " -H (read hardware timestamps instead of system timestamps)\n");
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fprintf(stderr, " -c (increment color mode level)\n");
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fprintf(stderr, " -i (binary output - may exceed 80 chars/line)\n");
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fprintf(stderr, " -a (enable additional ASCII output)\n");
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fprintf(stderr, " -S (swap byte order in printed CAN data[] - marked with '%c' )\n", SWAP_DELIMITER);
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fprintf(stderr, " -s <level> (silent mode - %d: off (default) %d: animation %d: silent)\n", SILENT_OFF, SILENT_ANI, SILENT_ON);
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fprintf(stderr, " -l (log CAN-frames into file. Sets '-s %d' by default)\n", SILENT_ON);
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fprintf(stderr, " -L (use log file format on stdout)\n");
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fprintf(stderr, " -n <count> (terminate after reception of <count> CAN frames)\n");
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fprintf(stderr, " -r <size> (set socket receive buffer to <size>)\n");
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fprintf(stderr, " -D (Don't exit if a \"detected\" can device goes down.\n");
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fprintf(stderr, " -d (monitor dropped CAN frames)\n");
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fprintf(stderr, " -e (dump CAN error frames in human-readable format)\n");
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fprintf(stderr, " -x (print extra message infos, rx/tx brs esi)\n");
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fprintf(stderr, " -T <msecs> (terminate after <msecs> without any reception)\n");
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fprintf(stderr, "\n");
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fprintf(stderr, "Up to %d CAN interfaces with optional filter sets can be specified\n", MAXSOCK);
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fprintf(stderr, "on the commandline in the form: <ifname>[,filter]*\n");
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fprintf(stderr, "\nFilters:\n");
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fprintf(stderr, " Comma separated filters can be specified for each given CAN interface:\n");
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fprintf(stderr, " <can_id>:<can_mask>\n (matches when <received_can_id> & mask == can_id & mask)\n");
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fprintf(stderr, " <can_id>~<can_mask>\n (matches when <received_can_id> & mask != can_id & mask)\n");
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fprintf(stderr, " #<error_mask>\n (set error frame filter, see include/linux/can/error.h)\n");
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fprintf(stderr, " [j|J]\n (join the given CAN filters - logical AND semantic)\n");
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fprintf(stderr, "\nCAN IDs, masks and data content are given and expected in hexadecimal values.\n");
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fprintf(stderr, "When the can_id is 8 digits long the CAN_EFF_FLAG is set for 29 bit EFF format.\n");
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fprintf(stderr, "Without any given filter all data frames are received ('0:0' default filter).\n");
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fprintf(stderr, "\nUse interface name '%s' to receive from all CAN interfaces.\n", ANYDEV);
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fprintf(stderr, "\nExamples:\n");
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fprintf(stderr, "%s -c -c -ta can0,123:7FF,400:700,#000000FF can2,400~7F0 can3 can8\n\n", prg);
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fprintf(stderr, "%s -l any,0~0,#FFFFFFFF\n (log only error frames but no(!) data frames)\n", prg);
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fprintf(stderr, "%s -l any,0:0,#FFFFFFFF\n (log error frames and also all data frames)\n", prg);
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fprintf(stderr, "%s vcan2,12345678:DFFFFFFF\n (match only for extended CAN ID 12345678)\n", prg);
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fprintf(stderr, "%s vcan2,123:7FF\n (matches CAN ID 123 - including EFF and RTR frames)\n", prg);
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fprintf(stderr, "%s vcan2,123:C00007FF\n (matches CAN ID 123 - only SFF and non-RTR frames)\n", prg);
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fprintf(stderr, "\n");
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}
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void sigterm(int signo)
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{
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running = 0;
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}
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int idx2dindex(int ifidx, int socket) {
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int i;
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struct ifreq ifr;
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for (i=0; i < MAXIFNAMES; i++) {
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if (dindex[i] == ifidx)
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return i;
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}
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/* create new interface index cache entry */
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/* remove index cache zombies first */
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for (i=0; i < MAXIFNAMES; i++) {
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if (dindex[i]) {
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ifr.ifr_ifindex = dindex[i];
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if (ioctl(socket, SIOCGIFNAME, &ifr) < 0)
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dindex[i] = 0;
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}
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}
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for (i=0; i < MAXIFNAMES; i++)
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if (!dindex[i]) /* free entry */
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break;
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if (i == MAXIFNAMES) {
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fprintf(stderr, "Interface index cache only supports %d interfaces.\n",
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MAXIFNAMES);
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exit(1);
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}
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dindex[i] = ifidx;
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ifr.ifr_ifindex = ifidx;
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if (ioctl(socket, SIOCGIFNAME, &ifr) < 0)
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perror("SIOCGIFNAME");
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if (max_devname_len < (int)strlen(ifr.ifr_name))
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max_devname_len = strlen(ifr.ifr_name);
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strlcpy(devname[i], ifr.ifr_name, sizeof(devname[i]));
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#ifdef DEBUG
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printf("new index %d (%s)\n", i, devname[i]);
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#endif
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return i;
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}
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int main(int argc, char **argv)
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{
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fd_set rdfs;
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int s[MAXSOCK];
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unsigned char timestamp = 0;
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unsigned char hwtimestamp = 0;
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unsigned char down_causes_exit = 1;
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unsigned char dropmonitor = 0;
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unsigned char extra_msg_info = 0;
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unsigned char silent = SILENT_INI;
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unsigned char silentani = 0;
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unsigned char color = 0;
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unsigned char view = 0;
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unsigned char log = 0;
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unsigned char logfrmt = 0;
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int count = 0;
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int rcvbuf_size = 0;
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int opt;
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int currmax, numfilter;
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int join_filter;
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char *ptr, *nptr;
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struct sockaddr_can addr;
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char ctrlmsg[CMSG_SPACE(sizeof(struct timeval) + 3*sizeof(struct timespec) + sizeof(__u32))];
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struct iovec iov;
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struct msghdr msg;
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struct cmsghdr *cmsg;
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struct can_filter *rfilter;
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can_err_mask_t err_mask;
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struct canfd_frame frame;
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int nbytes, i, maxdlen;
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struct ifreq ifr;
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struct timeval tv, last_tv;
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struct timeval timeout, timeout_config = { 0, 0 }, *timeout_current = NULL;
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FILE *logfile = NULL;
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#if 0 /* NuttX doesn't support these signals */
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signal(SIGTERM, sigterm);
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signal(SIGHUP, sigterm);
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#endif
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signal(SIGINT, sigterm);
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last_tv.tv_sec = 0;
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last_tv.tv_usec = 0;
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while ((opt = getopt(argc, argv, "t:HciaSs:lDdxLn:r:heT:?")) != -1) {
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switch (opt) {
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case 't':
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timestamp = optarg[0];
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if ((timestamp != 'a') && (timestamp != 'A') &&
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(timestamp != 'd') && (timestamp != 'z')) {
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fprintf(stderr, "%s: unknown timestamp mode '%c' - ignored\n",
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basename(argv[0]), optarg[0]);
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timestamp = 0;
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}
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break;
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case 'H':
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hwtimestamp = 1;
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break;
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case 'c':
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color++;
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break;
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case 'i':
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view |= CANLIB_VIEW_BINARY;
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break;
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case 'a':
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view |= CANLIB_VIEW_ASCII;
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break;
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case 'S':
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view |= CANLIB_VIEW_SWAP;
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break;
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case 'e':
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view |= CANLIB_VIEW_ERROR;
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break;
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case 's':
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silent = atoi(optarg);
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if (silent > SILENT_ON) {
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print_usage(basename(argv[0]));
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exit(1);
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}
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break;
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case 'l':
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log = 1;
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break;
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case 'D':
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down_causes_exit = 0;
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break;
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case 'd':
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dropmonitor = 1;
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break;
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case 'x':
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extra_msg_info = 1;
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break;
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case 'L':
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logfrmt = 1;
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break;
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case 'n':
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count = atoi(optarg);
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if (count < 1) {
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print_usage(basename(argv[0]));
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exit(1);
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}
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break;
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case 'r':
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rcvbuf_size = atoi(optarg);
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if (rcvbuf_size < 1) {
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print_usage(basename(argv[0]));
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exit(1);
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}
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break;
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case 'T':
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errno = 0;
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timeout_config.tv_usec = strtol(optarg, NULL, 0);
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if (errno != 0) {
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print_usage(basename(argv[0]));
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exit(1);
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}
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timeout_config.tv_sec = timeout_config.tv_usec / 1000;
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timeout_config.tv_usec = (timeout_config.tv_usec % 1000) * 1000;
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timeout_current = &timeout;
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break;
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default:
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print_usage(basename(argv[0]));
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exit(1);
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break;
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}
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}
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if (optind == argc) {
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print_usage(basename(argv[0]));
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exit(0);
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}
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if (logfrmt && view) {
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fprintf(stderr, "Log file format selected: Please disable ASCII/BINARY/SWAP options!\n");
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exit(0);
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}
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if (silent == SILENT_INI) {
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if (log) {
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fprintf(stderr, "Disabled standard output while logging.\n");
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silent = SILENT_ON; /* disable output on stdout */
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} else
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silent = SILENT_OFF; /* default output */
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}
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currmax = argc - optind; /* find real number of CAN devices */
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if (currmax > MAXSOCK) {
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fprintf(stderr, "More than %d CAN devices given on commandline!\n", MAXSOCK);
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return 1;
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}
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for (i=0; i < currmax; i++) {
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ptr = argv[optind+i];
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nptr = strchr(ptr, ',');
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#ifdef DEBUG
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printf("open %d '%s'.\n", i, ptr);
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#endif
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s[i] = socket(PF_CAN, SOCK_RAW, CAN_RAW);
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if (s[i] < 0) {
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perror("socket");
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return 1;
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}
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if (nptr)
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nbytes = nptr - ptr; /* interface name is up the first ',' */
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else
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nbytes = strlen(ptr); /* no ',' found => no filter definitions */
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if (nbytes >= IFNAMSIZ) {
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fprintf(stderr, "name of CAN device '%s' is too long!\n", ptr);
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return 1;
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}
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if (nbytes > max_devname_len)
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max_devname_len = nbytes; /* for nice printing */
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addr.can_family = AF_CAN;
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memset(&ifr.ifr_name, 0, sizeof(ifr.ifr_name));
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strncpy(ifr.ifr_name, ptr, nbytes);
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#ifdef DEBUG
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printf("using interface name '%s'.\n", ifr.ifr_name);
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#endif
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if (strcmp(ANYDEV, ifr.ifr_name)) {
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if (ioctl(s[i], SIOCGIFINDEX, &ifr) < 0) {
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perror("SIOCGIFINDEX");
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exit(1);
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}
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addr.can_ifindex = ifr.ifr_ifindex;
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} else
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addr.can_ifindex = 0; /* any can interface */
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if (nptr) {
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/* found a ',' after the interface name => check for filters */
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/* determine number of filters to alloc the filter space */
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numfilter = 0;
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ptr = nptr;
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while (ptr) {
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numfilter++;
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ptr++; /* hop behind the ',' */
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ptr = strchr(ptr, ','); /* exit condition */
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}
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rfilter = malloc(sizeof(struct can_filter) * numfilter);
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if (!rfilter) {
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fprintf(stderr, "Failed to create filter space!\n");
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return 1;
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}
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numfilter = 0;
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err_mask = 0;
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join_filter = 0;
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while (nptr) {
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ptr = nptr+1; /* hop behind the ',' */
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nptr = strchr(ptr, ','); /* update exit condition */
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if (sscanf(ptr, "%" SCNx32 ":%" SCNx32,
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&rfilter[numfilter].can_id,
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&rfilter[numfilter].can_mask) == 2) {
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rfilter[numfilter].can_mask &= ~CAN_ERR_FLAG;
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if (*(ptr+8) == ':')
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rfilter[numfilter].can_id |= CAN_EFF_FLAG;
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numfilter++;
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} else if (sscanf(ptr, "%" SCNx32 "~%" SCNx32,
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&rfilter[numfilter].can_id,
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&rfilter[numfilter].can_mask) == 2) {
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rfilter[numfilter].can_id |= CAN_INV_FILTER;
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rfilter[numfilter].can_mask &= ~CAN_ERR_FLAG;
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if (*(ptr+8) == '~')
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rfilter[numfilter].can_id |= CAN_EFF_FLAG;
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numfilter++;
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} else if (*ptr == 'j' || *ptr == 'J') {
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join_filter = 1;
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} else if (sscanf(ptr, "#%" SCNx32, &err_mask) != 1) {
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fprintf(stderr, "Error in filter option parsing: '%s'\n", ptr);
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return 1;
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}
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}
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if (err_mask)
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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;
|
|
}
|