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Code Issues Releases Activity

l2ping(8) should not loose echo data if target does not responds to the ping

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Reviewed by:	imp (mentor), ru
This commit is contained in:
Maksim Yevmenkin 2004-02-17 18:37:12 +00:00
parent 01ba334c9a
commit a5066b32bc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=125943
2 changed files with 36 additions and 24 deletions
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3
usr.sbin/bluetooth/l2ping/l2ping.8
View File

@ -81,7 +81,8 @@ Example:
.Fl S Li 00:05:04:03:02:01 .
.It Fl s Ar size
Specify the number of payload bytes to be sent.
The default is 64.
The default is the minimum L2CAP MTU minus the size of the L2CAP signalling
command header (44 bytes).
The maximum size is 65531.
Use this option with caution.
Some implementations may not like large sizes and may hang or even crash.

57
usr.sbin/bluetooth/l2ping/l2ping.c
View File

@ -59,27 +59,30 @@ static char const pattern[] = "1234567890-";
int
main(int argc, char *argv[])
{
bdaddr_t src, dst;
struct hostent *he = NULL;
struct sockaddr_l2cap sa;
struct ng_btsocket_l2cap_raw_ping r;
int n, s, count, wait, flood, fail;
struct timeval a, b;
bdaddr_t src, dst;
struct hostent *he = NULL;
uint8_t *echo_data = NULL;
struct sockaddr_l2cap sa;
int32_t n, s, count, wait, flood, echo_size;
/* Set defaults */
memcpy(&src, NG_HCI_BDADDR_ANY, sizeof(src));
memcpy(&dst, NG_HCI_BDADDR_ANY, sizeof(dst));
memset(&r, 0, sizeof(r));
r.echo_data = calloc(NG_L2CAP_MAX_ECHO_SIZE, sizeof(u_int8_t));
if (r.echo_data == NULL) {
echo_data = (uint8_t *) calloc(NG_L2CAP_MAX_ECHO_SIZE, sizeof(uint8_t));
if (echo_data == NULL) {
fprintf(stderr, "Failed to allocate echo data buffer");
exit(1);
}
r.echo_size = 64; /* bytes */
count = -1; /* unlimited */
wait = 1; /* sec */
/*
* Set default echo size to the NG_L2CAP_MTU_MINIMUM minus
* the size of the L2CAP signalling command header.
*/
echo_size = NG_L2CAP_MTU_MINIMUM - sizeof(ng_l2cap_cmd_hdr_t);
count = -1; /* unimited */
wait = 1; /* sec */
flood = 0;
/* Parse command line arguments */
@ -120,12 +123,12 @@ main(int argc, char *argv[])
break;
case 's':
r.echo_size = atoi(optarg);
if ((int) r.echo_size < sizeof(int))
echo_size = atoi(optarg);
if (echo_size < sizeof(int32_t))
usage();
if (r.echo_size > NG_L2CAP_MAX_ECHO_SIZE)
r.echo_size = NG_L2CAP_MAX_ECHO_SIZE;
if (echo_size > NG_L2CAP_MAX_ECHO_SIZE)
echo_size = NG_L2CAP_MAX_ECHO_SIZE;
break;
case 'h':
@ -161,20 +164,28 @@ main(int argc, char *argv[])
"Could not connect socket, dst bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL));
/* Fill pattern */
for (n = 0; n < r.echo_size; ) {
int avail = min(r.echo_size - n, PATTERN_SIZE);
for (n = 0; n < echo_size; ) {
int32_t avail = min(echo_size - n, PATTERN_SIZE);
memcpy(r.echo_data + n, pattern, avail);
memcpy(echo_data + n, pattern, avail);
n += avail;
}
/* Start ping'ing */
for (n = 0; count == -1 || count > 0; n ++) {
struct ng_btsocket_l2cap_raw_ping r;
struct timeval a, b;
int32_t fail;
if (gettimeofday(&a, NULL) < 0)
err(5, "Could not gettimeofday(a)");
fail = 0;
*((int *)(r.echo_data)) = htonl(n);
*((int32_t *) echo_data) = htonl(n);
r.result = 0;
r.echo_size = echo_size;
r.echo_data = echo_data;
if (ioctl(s, SIOC_L2CAP_L2CA_PING, &r, sizeof(r)) < 0) {
r.result = errno;
fail = 1;
@ -193,7 +204,7 @@ main(int argc, char *argv[])
"%d bytes from %s seq_no=%d time=%.3f ms result=%#x %s\n",
r.echo_size,
bt_ntoa(&dst, NULL),
ntohl(*((int *)(r.echo_data))),
ntohl(*((int32_t *)(r.echo_data))),
tv2msec(&b), r.result,
((fail == 0)? "" : strerror(errno)));
@ -208,7 +219,7 @@ main(int argc, char *argv[])
count --;
}
free(r.echo_data);
free(echo_data);
close(s);
return (0);
@ -256,7 +267,7 @@ usage(void)
fprintf(stderr, "\t-f - No delay (soft of flood)\n");
fprintf(stderr, "\t-i wait - Delay between packets (sec)\n");
fprintf(stderr, "\t-s size - Packet size (bytes), " \
"between %d and %d\n", sizeof(int), NG_L2CAP_MAX_ECHO_SIZE);
"between %d and %d\n", sizeof(int32_t), NG_L2CAP_MAX_ECHO_SIZE);
fprintf(stderr, "\t-h - Display this message\n");
exit(255);