From: Thomas Higdon <t...@fb.com> Date: Fri, 13 Sep 2019 23:23:34 +0000
> For receive-heavy cases on the server-side, we want to track the > connection quality for individual client IPs. This counter, similar to > the existing system-wide TCPOFOQueue counter in /proc/net/netstat, > tracks out-of-order packet reception. By providing this counter in > TCP_INFO, it will allow understanding to what degree receive-heavy > sockets are experiencing out-of-order delivery and packet drops > indicating congestion. > > Please note that this is similar to the counter in NetBSD TCP_INFO, and > has the same name. > > Also note that we avoid increasing the size of the tcp_sock struct by > taking advantage of a hole. > > Signed-off-by: Thomas Higdon <t...@fb.com> Applied.
