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isotpsend: add new options to generate PDU traffic load 

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
pull/342/head
Oliver Hartkopp 2022-02-08 20:19:36 +01:00
parent 9f9f2ff721
commit acec220189
1 changed files with 31 additions and 1 deletions
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32
isotpsend.c
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@ -71,6 +71,8 @@ void print_usage(char *prg)
fprintf(stderr, " -t <time ns> (frame transmit time (N_As) in nanosecs)\n");
fprintf(stderr, " -f <time ns> (ignore FC and force local tx stmin value in nanosecs)\n");
fprintf(stderr, " -D <len> (send a fixed PDU with len bytes - no STDIN data)\n");
fprintf(stderr, " -l <num> (send num PDUs - use 'i' for infinite loop)\n");
fprintf(stderr, " -g <usecs> (wait given usecs before sending a PDU)\n");
fprintf(stderr, " -b (block until the PDU transmission is completed)\n");
fprintf(stderr, " -S (SF broadcast mode for functional addressing)\n");
fprintf(stderr, " -L <mtu>:<tx_dl>:<tx_flags> (link layer options for CAN FD)\n");
@ -87,6 +89,8 @@ int main(int argc, char **argv)
static struct can_isotp_ll_options llopts;
int opt;
extern int optind, opterr, optopt;
unsigned int loops = 1; /* one (== no) loop by default */
useconds_t usecs = 0; /* wait before sending the PDU */
__u32 force_tx_stmin = 0;
unsigned char buf[BUFSIZE];
int buflen = 0;
@ -95,7 +99,7 @@ int main(int argc, char **argv)
addr.can_addr.tp.tx_id = addr.can_addr.tp.rx_id = NO_CAN_ID;
while ((opt = getopt(argc, argv, "s:d:x:p:P:t:f:D:bSL:?")) != -1) {
while ((opt = getopt(argc, argv, "s:d:x:p:P:t:f:D:l:g:bSL:?")) != -1) {
switch (opt) {
case 's':
addr.can_addr.tp.tx_id = strtoul(optarg, (char **)NULL, 16);
@ -178,6 +182,22 @@ int main(int argc, char **argv)
}
break;
case 'l':
if (optarg[0] == 'i') {
loops = 0; /* infinite loop */
} else {
loops = strtoul(optarg, NULL, 10);
if (!loops) {
fprintf(stderr, "Invalid argument for option -l!\n");
return 1;
}
}
break;
case 'g':
usecs = strtoul(optarg, NULL, 10);
break;
case 'b':
opts.flags |= CAN_ISOTP_WAIT_TX_DONE;
break;
@ -256,6 +276,9 @@ int main(int argc, char **argv)
buf[buflen] = ((buflen % 0xFF) + 1) & 0xFF;
}
loop:
if (usecs)
usleep(usecs);
retval = write(s, buf, buflen);
if (retval < 0) {
@ -266,6 +289,13 @@ int main(int argc, char **argv)
if (retval != buflen)
fprintf(stderr, "wrote only %d from %d byte\n", retval, buflen);
if (loops) {
if (--loops)
goto loop;
} else {
goto loop;
}
/*
* due to a Kernel internal wait queue the PDU is sent completely
* before close() returns.