Author: jtl Date: Thu Oct 6 16:09:45 2016 New Revision: 306768 URL: https://svnweb.freebsd.org/changeset/base/306768
Log: If the new window size is less than the old window size, skip the calculations to check if we should advertise a larger window. Reviewed by: gnn MFC after: 2 weeks Sponsored by: Juniper Networks, Netflix Differential Revision: https://reviews.freebsd.org/D7076 Tested by: Limelight, Netflix Modified: head/sys/netinet/tcp_output.c Modified: head/sys/netinet/tcp_output.c ============================================================================== --- head/sys/netinet/tcp_output.c Thu Oct 6 16:00:48 2016 (r306767) +++ head/sys/netinet/tcp_output.c Thu Oct 6 16:09:45 2016 (r306768) @@ -654,10 +654,11 @@ after_sack_rexmit: oldwin = 0; /* - * If the new window size ends up being the same as the old - * size when it is scaled, then don't force a window update. + * If the new window size ends up being the same as or less + * than the old size when it is scaled, then don't force + * a window update. */ - if (oldwin >> tp->rcv_scale == (adv + oldwin) >> tp->rcv_scale) + if (oldwin >> tp->rcv_scale >= (adv + oldwin) >> tp->rcv_scale) goto dontupdate; if (adv >= (long)(2 * tp->t_maxseg) && _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
