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testj1939: add re-bind support

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This option is needed for j1939 socket functionality test.
Binding to a socket and rebinding to the socket with e.g. a different SA
should work.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Bastian Stender <bst@pengutronix.de>
This commit is contained in:
Bastian Stender
2018-09-21 11:31:04 +02:00
committed by Oleksij Rempel
parent 0ff988eeef
commit 1ba9b86451
1 changed files with 20 additions and 2 deletions
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testj1939.c
+20 -2
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@@ -38,6 +38,7 @@ static const char help_msg[] =
" This atually receives packets\n"
" -c Issue connect()\n"
" -p=PRIO Set priority to PRIO\n"
" -b Do normal bind with SA+1 and rebind with actual SA\n"
" -n Emit 64bit NAMEs in output\n"
" -w[TIME] Return after TIME (default 1) seconds\n"
"\n"
@@ -46,7 +47,7 @@ static const char help_msg[] =
"\n"
;
static const char optstring[] = "?vs::rep:cnw::";
static const char optstring[] = "?vbs::rep:cnw::";
static void parse_canaddr(char *spec, struct sockaddr_can *paddr)
{
@@ -109,7 +110,7 @@ int main(int argc, char *argv[])
uint8_t dat[128];
int valid_peername = 0;
int todo_send = 0, todo_recv = 0, todo_echo = 0, todo_prio = -1;
int todo_connect = 0, todo_names = 0, todo_wait = 0;
int todo_connect = 0, todo_names = 0, todo_wait = 0, todo_rebind = 0;
/* argument parsing */
while ((opt = getopt(argc, argv, optstring)) != -1)
@@ -135,6 +136,9 @@ int main(int argc, char *argv[])
case 'n':
todo_names = 1;
break;
case 'b':
todo_rebind = 1;
break;
case 'w':
schedule_oneshot_itimer(strtod(optarg ?: "1", NULL));
signal(SIGALRM, onsigalrm);
@@ -152,6 +156,9 @@ int main(int argc, char *argv[])
++optind;
}
if (todo_rebind)
sockname.can_addr.j1939.addr++;
if (argv[optind]) {
if (strcmp("-", argv[optind])) {
parse_canaddr(argv[optind], &peername);
@@ -182,6 +189,17 @@ int main(int argc, char *argv[])
if (ret < 0)
error(1, errno, "bind()");
if (todo_rebind) {
/* rebind with actual SA */
sockname.can_addr.j1939.addr--;
if (verbose)
fprintf(stderr, "- bind(, %s, %zi);\n", libj1939_addr2str(&sockname), sizeof(sockname));
ret = bind(sock, (void *)&sockname, sizeof(sockname));
if (ret < 0)
error(1, errno, "re-bind()");
}
if (todo_connect) {
if (!valid_peername)
error(1, 0, "no peername supplied");