next_token
len = next_token(buf);
len = next_token(&buf);
len = next_token(&buf);
unsigned long xfer_id, next_token;
next_token = (xfer->transfer_id & (MSG_TOKEN_MAX - 1));
MSG_TOKEN_MAX, next_token);
if (xfer_id != next_token)
atomic_add((int)(xfer_id - next_token), &transfer_last_id);
static u8 next_token;
client_data->response.token = next_token++;