if (tcp_space < 0) {
tcp_space = 0;
}
- /* Imagine we have filled up tcp_space already for a socket and the scheduler
- * isn't going to run again for a while. We should write a little extra to the
- * kernel so it has some data to send between scheduling runs if it gets ACKs
- * back so it doesn't sit idle. With the suggested sock_buf_size_factor of
- * 1.0, a socket can have at most 2*cwnd data in the kernel: 1 cwnd on the
- * wire waiting for ACKs and 1 cwnd ready and waiting to be sent when those
- * ACKs come. */
+
+ /* Imagine we have filled up tcp_space already for a socket and the
+ * scheduler isn't going to run again for a while. We should write a little
+ * extra to the kernel so it has some data to send between scheduling runs
+ * if it gets ACKs back so it doesn't sit idle. With the suggested
+ * sock_buf_size_factor of 1.0, a socket can have at most 2*cwnd data in the
+ * kernel: 1 cwnd on the wire waiting for ACKs and 1 cwnd ready and waiting
+ * to be sent when those ACKs come. */
extra_space =
clamp_double_to_int64((ent->cwnd * ent->mss) * sock_buf_size_factor) -
ent->notsent;