1567c937e2
Adjust ssthresh in after_idle to the maximum of the prior ssthresh, or 3/4 of the prior cwnd. See RFC2861 section 2 for an in depth explanation for the rationale around this. As newreno is the default "fall-through" reaction, most tcp variants will benefit from this. Reviewed by: tuexen MFC after: 2 weeks Sponsored by: NetApp, Inc. Differential Revision: https://reviews.freebsd.org/D22438