Date: Wed, 17 Oct 2018 01:49:43 +0000 (UTC) From: Navdeep Parhar <np@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r339401 - stable/11/sys/dev/cxgbe/tom Message-ID: <201810170149.w9H1nhum086066@repo.freebsd.org>
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Author: np Date: Wed Oct 17 01:49:43 2018 New Revision: 339401 URL: https://svnweb.freebsd.org/changeset/base/339401 Log: MFC r320426: cxgbe/t4_tom: Do not include space taken by the TCP timestamp option in the "effective MSS" for the connection. The chip expects it this way. Modified: stable/11/sys/dev/cxgbe/tom/t4_cpl_io.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/dev/cxgbe/tom/t4_cpl_io.c ============================================================================== --- stable/11/sys/dev/cxgbe/tom/t4_cpl_io.c Wed Oct 17 01:30:51 2018 (r339400) +++ stable/11/sys/dev/cxgbe/tom/t4_cpl_io.c Wed Oct 17 01:49:43 2018 (r339401) @@ -260,6 +260,8 @@ assign_rxopt(struct tcpcb *tp, unsigned int opt) n = sizeof(struct ip6_hdr) + sizeof(struct tcphdr); else n = sizeof(struct ip) + sizeof(struct tcphdr); + if (V_tcp_do_rfc1323) + n += TCPOLEN_TSTAMP_APPA; tp->t_maxseg = sc->params.mtus[G_TCPOPT_MSS(opt)] - n; CTR4(KTR_CXGBE, "%s: tid %d, mtu_idx %u (%u)", __func__, toep->tid,
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