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jcat: add repeat support 

Add option to resend same data without closing the socket.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
pull/137/head
Oleksij Rempel 2019-05-02 08:43:08 +02:00 committed by Marc Kleine-Budde
parent edcce70373
commit 25025d05ae
1 changed files with 21 additions and 4 deletions
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25
jcat.c
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@ -48,6 +48,7 @@ struct jcat_priv {
int infile;
int outfile;
size_t max_transfer;
int repeat;
int todo_prio;
bool valid_peername;
@ -75,6 +76,7 @@ static const char help_msg[] =
" -r Receive data\n"
" -P <timeout> poll timeout in milliseconds before sending data.\n"
" With this option send() will be used with MSG_DONTWAIT flag.\n"
" -R <count> Set send repeat count. Default: 1\n"
"\n"
"Example:\n"
"jcat -i some_file_to_send can0:0x80 :0x90,0x12300\n"
@ -82,7 +84,7 @@ static const char help_msg[] =
"\n"
;
static const char optstring[] = "?i:vs:rp:P:cnw::";
static const char optstring[] = "?i:vs:rp:P:R:";
static void jcat_init_sockaddr_can(struct sockaddr_can *sac)
@ -294,7 +296,7 @@ static int jcat_recv_err(struct jcat_priv *priv)
static int jcat_send_loop(struct jcat_priv *priv, int out_fd, char *buf,
size_t buf_size)
{
ssize_t count, num_sent;
ssize_t count, num_sent = 0;
char *tmp_buf = buf;
unsigned int events = POLLOUT | POLLERR;
bool tx_done = false;
@ -445,6 +447,7 @@ static size_t jcat_get_file_size(int fd)
static int jcat_send(struct jcat_priv *priv)
{
unsigned int size = 0;
int ret, i;
if (priv->todo_filesize)
size = jcat_get_file_size(priv->infile);
@ -452,8 +455,16 @@ static int jcat_send(struct jcat_priv *priv)
if (!size)
return EXIT_FAILURE;
return jcat_sendfile(priv, priv->sock, priv->infile, NULL,
size);
for (i = 0; i < priv->repeat; i++) {
ret = jcat_sendfile(priv, priv->sock, priv->infile, NULL, size);
if (ret)
break;
if (lseek(priv->infile, 0, SEEK_SET) == -1)
error(1, errno, "%s lseek() start\n", __func__);
}
return ret;
}
static int jcat_recv_one(struct jcat_priv *priv, uint8_t *buf, size_t buf_size)
@ -593,6 +604,11 @@ static int jcat_parse_args(struct jcat_priv *priv, int argc, char *argv[])
case 'c':
priv->todo_connect = 1;
break;
case 'R':
priv->repeat = atoi(optarg);
if (priv->repeat < 1)
err(EXIT_FAILURE, "send/repeat count can't be less then 1\n");
break;
default:
fputs(help_msg, stderr);
return EXIT_FAILURE;
@ -631,6 +647,7 @@ int main(int argc, char *argv[])
priv->outfile = STDOUT_FILENO;
priv->max_transfer = J1939_MAX_ETP_PACKET_SIZE;
priv->polltimeout = 100000;
priv->repeat = 1;
jcat_init_sockaddr_can(&priv->sockname);
jcat_init_sockaddr_can(&priv->peername);