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isotptun.c: Reformat help/usage output to be compatible with help2man. 

Signed-off-by: Alexander Gerasiov <gq@debian.org>

Gbp-Pq: Name 0018-isotptun.c-Reformat-help-usage-output-to-be-compatib.patch
pull/69/head
Alexander Gerasiov 2018-02-11 19:03:05 +03:00 committed by Alexander Gerasiov
parent c61c9bc030
commit 89c66aba5f
1 changed files with 16 additions and 14 deletions
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30
isotptun.c
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@ -102,23 +102,25 @@ void perror_syslog(const char *s)
void print_usage(char *prg)
{
fprintf(stderr, "%s - IP over CAN ISO-TP (ISO15765-2) tunnel / proof-of-concept.\n", prg);
fprintf(stderr, "\nUsage: %s [options] <CAN interface>\n\n", prg);
fprintf(stderr, "This program creates a Linux tunnel netdevice 'ctunX' and transfers the\n");
fprintf(stderr, "ethernet frames inside ISO15765-2 (unreliable) datagrams on CAN.\n\n");
fprintf(stderr, "Options: -s <can_id> (source can_id. Use 8 digits for extended IDs)\n");
fprintf(stderr, " -d <can_id> (destination can_id. Use 8 digits for extended IDs)\n");
fprintf(stderr, " -n <name> (name of created IP netdevice. Default: '%s')\n", DEFAULT_NAME);
fprintf(stderr, " -x <addr>[:<rxaddr>] (extended addressing / opt. separate rxaddr)\n");
fprintf(stderr, " -L <mtu>:<tx_dl>:<tx_flags> (link layer options for CAN FD)\n");
fprintf(stderr, " -p [tx]:[rx] (set and enable tx/rx padding bytes)\n");
fprintf(stderr, " -P <mode> (check rx padding for (l)ength (c)ontent (a)ll)\n");
fprintf(stderr, " -t <time ns> (transmit time in nanosecs)\n");
fprintf(stderr, " -b <bs> (blocksize. 0 = off)\n");
fprintf(stderr, " -m <val> (STmin in ms/ns. See spec.)\n");
fprintf(stderr, " -w <num> (max. wait frame transmissions.)\n");
fprintf(stderr, " -D (daemonize to background when tun device created)\n");
fprintf(stderr, " -h (half duplex mode.)\n");
fprintf(stderr, " -v (verbose mode. Print symbols for tunneled msgs.)\n");
fprintf(stderr, "Options:\n");
fprintf(stderr, " -s <can_id> (source can_id. Use 8 digits for extended IDs)\n");
fprintf(stderr, " -d <can_id> (destination can_id. Use 8 digits for extended IDs)\n");
fprintf(stderr, " -n <name> (name of created IP netdevice. Default: '%s')\n", DEFAULT_NAME);
fprintf(stderr, " -x <addr>[:<rxaddr>] (extended addressing / opt. separate rxaddr)\n");
fprintf(stderr, " -L <mtu>:<tx_dl>:<tx_flags> (link layer options for CAN FD)\n");
fprintf(stderr, " -p [tx]:[rx] (set and enable tx/rx padding bytes)\n");
fprintf(stderr, " -P <mode> (check rx padding for (l)ength (c)ontent (a)ll)\n");
fprintf(stderr, " -t <time ns> (transmit time in nanosecs)\n");
fprintf(stderr, " -b <bs> (blocksize. 0 = off)\n");
fprintf(stderr, " -m <val> (STmin in ms/ns. See spec.)\n");
fprintf(stderr, " -w <num> (max. wait frame transmissions.)\n");
fprintf(stderr, " -D (daemonize to background when tun device created)\n");
fprintf(stderr, " -h (half duplex mode.)\n");
fprintf(stderr, " -v (verbose mode. Print symbols for tunneled msgs.)\n");
fprintf(stderr, "\nCAN IDs and addresses are given and expected in hexadecimal values.\n");
fprintf(stderr, "Use e.g. 'ifconfig ctun0 123.123.123.1 pointopoint 123.123.123.2 up'\n");
fprintf(stderr, "to create a point-to-point IP connection on CAN.\n");