git commit -m "first commit for v2"
This commit is contained in:
323
Devices/Libraries/Systems/can-utils/isotpsend.c
Executable file
323
Devices/Libraries/Systems/can-utils/isotpsend.c
Executable file
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/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
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/*
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* isotpsend.c
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*
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* Copyright (c) 2008 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 <libgen.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <net/if.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <linux/can.h>
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#include <linux/can/isotp.h>
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#define NO_CAN_ID 0xFFFFFFFFU
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#define BUFSIZE 67000 /* size > 66000 kernel buf to test socket API internal checks */
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#define ZERO_STRING "ZERO"
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void print_usage(char *prg)
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{
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fprintf(stderr, "\nUsage: %s [options] <CAN interface>\n", prg);
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fprintf(stderr, "Options:\n");
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fprintf(stderr, " -s <can_id> (source can_id. Use 8 digits for extended IDs)\n");
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fprintf(stderr, " -d <can_id> (destination can_id. Use 8 digits for extended IDs)\n");
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fprintf(stderr, " -x <addr>[:<rxaddr>] (extended addressing / opt. separate rxaddr)\n");
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fprintf(stderr, " -p [tx]:[rx] (set and enable tx/rx padding bytes)\n");
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fprintf(stderr, " -P <mode> (check rx padding for (l)ength (c)ontent (a)ll)\n");
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fprintf(stderr, " -t <time ns> (frame transmit time (N_As) in nanosecs) (*)\n");
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fprintf(stderr, " -f <time ns> (ignore FC and force local tx stmin value in nanosecs)\n");
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fprintf(stderr, " -D <len> (send a fixed PDU with len bytes - no STDIN data)\n");
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fprintf(stderr, " -l <num> (send num PDUs - use 'i' for infinite loop)\n");
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fprintf(stderr, " -g <usecs> (wait given usecs before sending a PDU)\n");
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fprintf(stderr, " -b (block until the PDU transmission is completed)\n");
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fprintf(stderr, " -S (SF broadcast mode - for functional addressing)\n");
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fprintf(stderr, " -C (CF broadcast mode - no wait for flow controls)\n");
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fprintf(stderr, " -L <mtu>:<tx_dl>:<tx_flags> (link layer options for CAN FD)\n");
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fprintf(stderr, "\nCAN IDs and addresses are given and expected in hexadecimal values.\n");
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fprintf(stderr, "The pdu data is expected on STDIN in space separated ASCII hex values.\n");
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fprintf(stderr, "(*) = Use '-t %s' to set N_As to zero for Linux version 5.18+\n", ZERO_STRING);
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fprintf(stderr, "\n");
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}
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int main(int argc, char **argv)
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{
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int s;
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struct sockaddr_can addr;
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static struct can_isotp_options opts;
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static struct can_isotp_ll_options llopts;
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int opt;
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extern int optind, opterr, optopt;
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unsigned int loops = 1; /* one (== no) loop by default */
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useconds_t usecs = 0; /* wait before sending the PDU */
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__u32 force_tx_stmin = 0;
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unsigned char buf[BUFSIZE];
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int buflen = 0;
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int datalen = 0;
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int retval = 0;
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addr.can_addr.tp.tx_id = addr.can_addr.tp.rx_id = NO_CAN_ID;
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while ((opt = getopt(argc, argv, "s:d:x:p:P:t:f:D:l:g:bSCL:?")) != -1) {
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switch (opt) {
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case 's':
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addr.can_addr.tp.tx_id = strtoul(optarg, NULL, 16);
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if (strlen(optarg) > 7)
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addr.can_addr.tp.tx_id |= CAN_EFF_FLAG;
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break;
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case 'd':
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addr.can_addr.tp.rx_id = strtoul(optarg, NULL, 16);
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if (strlen(optarg) > 7)
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addr.can_addr.tp.rx_id |= CAN_EFF_FLAG;
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break;
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case 'x':
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{
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int elements = sscanf(optarg, "%hhx:%hhx",
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&opts.ext_address,
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&opts.rx_ext_address);
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if (elements == 1)
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opts.flags |= CAN_ISOTP_EXTEND_ADDR;
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else if (elements == 2)
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opts.flags |= (CAN_ISOTP_EXTEND_ADDR | CAN_ISOTP_RX_EXT_ADDR);
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else {
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printf("incorrect extended addr values '%s'.\n", optarg);
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print_usage(basename(argv[0]));
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exit(0);
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}
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break;
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}
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case 'p':
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{
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int elements = sscanf(optarg, "%hhx:%hhx",
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&opts.txpad_content,
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&opts.rxpad_content);
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if (elements == 1)
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opts.flags |= CAN_ISOTP_TX_PADDING;
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else if (elements == 2)
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opts.flags |= (CAN_ISOTP_TX_PADDING | CAN_ISOTP_RX_PADDING);
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else if (sscanf(optarg, ":%hhx", &opts.rxpad_content) == 1)
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opts.flags |= CAN_ISOTP_RX_PADDING;
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else {
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printf("incorrect padding values '%s'.\n", optarg);
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print_usage(basename(argv[0]));
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exit(0);
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}
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break;
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}
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case 'P':
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if (optarg[0] == 'l')
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opts.flags |= CAN_ISOTP_CHK_PAD_LEN;
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else if (optarg[0] == 'c')
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opts.flags |= CAN_ISOTP_CHK_PAD_DATA;
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else if (optarg[0] == 'a')
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opts.flags |= (CAN_ISOTP_CHK_PAD_LEN | CAN_ISOTP_CHK_PAD_DATA);
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else {
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printf("unknown padding check option '%c'.\n", optarg[0]);
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print_usage(basename(argv[0]));
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exit(0);
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}
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break;
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case 't':
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if (!strncmp(optarg, ZERO_STRING, strlen(ZERO_STRING)))
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opts.frame_txtime = CAN_ISOTP_FRAME_TXTIME_ZERO;
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else
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opts.frame_txtime = strtoul(optarg, NULL, 10);
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break;
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case 'f':
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opts.flags |= CAN_ISOTP_FORCE_TXSTMIN;
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force_tx_stmin = strtoul(optarg, NULL, 10);
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break;
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case 'D':
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datalen = strtoul(optarg, NULL, 10);
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if (!datalen || datalen >= BUFSIZE) {
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print_usage(basename(argv[0]));
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exit(0);
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}
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break;
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case 'l':
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if (optarg[0] == 'i') {
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loops = 0; /* infinite loop */
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} else {
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loops = strtoul(optarg, NULL, 10);
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if (!loops) {
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fprintf(stderr, "Invalid argument for option -l!\n");
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return 1;
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}
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}
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break;
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case 'g':
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usecs = strtoul(optarg, NULL, 10);
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break;
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case 'b':
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opts.flags |= CAN_ISOTP_WAIT_TX_DONE;
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break;
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case 'S':
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opts.flags |= CAN_ISOTP_SF_BROADCAST;
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break;
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case 'C':
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opts.flags |= CAN_ISOTP_CF_BROADCAST;
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break;
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case 'L':
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if (sscanf(optarg, "%hhu:%hhu:%hhu",
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&llopts.mtu,
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&llopts.tx_dl,
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&llopts.tx_flags) != 3) {
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printf("unknown link layer options '%s'.\n", optarg);
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print_usage(basename(argv[0]));
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exit(0);
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}
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break;
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case '?':
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print_usage(basename(argv[0]));
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exit(0);
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break;
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default:
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fprintf(stderr, "Unknown option %c\n", opt);
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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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#define BC_FLAGS (CAN_ISOTP_SF_BROADCAST | CAN_ISOTP_CF_BROADCAST)
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if ((argc - optind != 1) ||
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(addr.can_addr.tp.tx_id == NO_CAN_ID) ||
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((opts.flags & BC_FLAGS) == BC_FLAGS) ||
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((addr.can_addr.tp.rx_id == NO_CAN_ID) &&
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(!(opts.flags & BC_FLAGS)))) {
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print_usage(basename(argv[0]));
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exit(1);
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}
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if ((s = socket(PF_CAN, SOCK_DGRAM, CAN_ISOTP)) < 0) {
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perror("socket");
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exit(1);
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}
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if (setsockopt(s, SOL_CAN_ISOTP, CAN_ISOTP_OPTS, &opts, sizeof(opts)) < 0) {
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perror("sockopt");
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exit(1);
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}
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if (llopts.tx_dl) {
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if (setsockopt(s, SOL_CAN_ISOTP, CAN_ISOTP_LL_OPTS, &llopts, sizeof(llopts)) < 0) {
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perror("link layer sockopt");
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exit(1);
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}
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}
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if (opts.flags & CAN_ISOTP_FORCE_TXSTMIN)
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setsockopt(s, SOL_CAN_ISOTP, CAN_ISOTP_TX_STMIN, &force_tx_stmin, sizeof(force_tx_stmin));
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addr.can_family = AF_CAN;
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addr.can_ifindex = if_nametoindex(argv[optind]);
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if (!addr.can_ifindex) {
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perror("if_nametoindex");
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exit(1);
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}
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if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
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perror("bind");
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close(s);
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exit(1);
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}
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if (!datalen) {
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while (buflen < BUFSIZE && scanf("%hhx", &buf[buflen]) == 1)
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buflen++;
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} else {
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for (buflen = 0; buflen < datalen; buflen++)
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buf[buflen] = ((buflen % 0xFF) + 1) & 0xFF;
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}
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loop:
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if (usecs)
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usleep(usecs);
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retval = write(s, buf, buflen);
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if (retval < 0) {
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perror("write");
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return retval;
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}
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if (retval != buflen)
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fprintf(stderr, "wrote only %d from %d byte\n", retval, buflen);
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if (loops) {
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if (--loops)
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goto loop;
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} else {
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goto loop;
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}
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/*
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* due to a Kernel internal wait queue the PDU is sent completely
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* before close() returns.
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*/
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close(s);
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return 0;
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}
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