Author: hiren Date: Wed Dec 9 07:56:40 2015 New Revision: 292011 URL: https://svnweb.freebsd.org/changeset/base/292011
Log: Add an option to use rfc6675 based pipe/inflight bytes calculation in cubic. Reviewed by: gnn MFC after: 3 weeks Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D4205 Modified: head/sys/netinet/cc/cc_cubic.c Modified: head/sys/netinet/cc/cc_cubic.c ============================================================================== --- head/sys/netinet/cc/cc_cubic.c Wed Dec 9 06:59:04 2015 (r292010) +++ head/sys/netinet/cc/cc_cubic.c Wed Dec 9 07:56:40 2015 (r292011) @@ -299,8 +299,10 @@ static void cubic_post_recovery(struct cc_var *ccv) { struct cubic *cubic_data; + int pipe; cubic_data = ccv->cc_data; + pipe = 0; /* Fast convergence heuristic. */ if (cubic_data->max_cwnd < cubic_data->prev_max_cwnd) @@ -315,10 +317,13 @@ cubic_post_recovery(struct cc_var *ccv) * * XXXLAS: Find a way to do this without needing curack */ - if (SEQ_GT(ccv->curack + CCV(ccv, snd_ssthresh), - CCV(ccv, snd_max))) - CCV(ccv, snd_cwnd) = CCV(ccv, snd_max) - ccv->curack + - CCV(ccv, t_maxseg); + if (V_tcp_do_rfc6675_pipe) + pipe = tcp_compute_pipe(ccv->ccvc.tcp); + else + pipe = CCV(ccv, snd_max) - ccv->curack; + + if (pipe < CCV(ccv, snd_ssthresh)) + CCV(ccv, snd_cwnd) = pipe + CCV(ccv, t_maxseg); else /* Update cwnd based on beta and adjusted max_cwnd. */ CCV(ccv, snd_cwnd) = max(1, ((CUBIC_BETA * _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
