/* removing all acknowledged entries from ack */
bool
reliable_ack_write(struct reliable_ack *ack,
struct buffer *buf,
const struct session_id *sid, int max, bool prepend)
{
int i, j;
uint8_t n;
struct buffer sub;
n = ack->len;
if (n > max)
{
n = max;
}
sub = buf_sub(buf, ACK_SIZE(n), prepend);
if (!BDEF(&sub))
{
goto error;
}
ASSERT(buf_write(&sub, &n, sizeof(n)));
for (i = 0; i < n; ++i)
{
packet_id_type pid = ack->packet_id[i];
packet_id_type net_pid = htonpid(pid);
ASSERT(buf_write(&sub, &net_pid, sizeof(net_pid)));
dmsg(D_REL_DEBUG, "ACK write ID " packet_id_format " (ack->len=%d, n=%d)", (packet_id_print_type)pid, ack->len, n);
}
if (n)
{
ASSERT(session_id_defined(sid));
ASSERT(session_id_write(sid, &sub));
for (i = 0, j = n; j < ack->len; )
ack->packet_id[i++] = ack->packet_id[j++];
ack->len = i;
}
return true;
error:
return false;
}
/* add to extra_frame the maximum number of bytes we will need for reliable_ack_write */
void
reliable_ack_adjust_frame_parameters (struct frame* frame, int max)
{
frame_add_to_extra_frame (frame, ACK_SIZE (max));
}
