From owner-svn-src-all@freebsd.org Tue Aug 27 01:16:03 2019 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 7F8E5C2D96; Tue, 27 Aug 2019 01:16:03 +0000 (UTC) (envelope-from np@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46HWCl2pTLz48mx; Tue, 27 Aug 2019 01:16:03 +0000 (UTC) (envelope-from np@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 43690F07B; Tue, 27 Aug 2019 01:16:03 +0000 (UTC) (envelope-from np@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x7R1G3uA098316; Tue, 27 Aug 2019 01:16:03 GMT (envelope-from np@FreeBSD.org) Received: (from np@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x7R1G37I098315; Tue, 27 Aug 2019 01:16:03 GMT (envelope-from np@FreeBSD.org) Message-Id: <201908270116.x7R1G37I098315@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: np set sender to np@FreeBSD.org using -f From: Navdeep Parhar Date: Tue, 27 Aug 2019 01:16:03 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r351524 - head/sys/dev/cxgbe/tom X-SVN-Group: head X-SVN-Commit-Author: np X-SVN-Commit-Paths: head/sys/dev/cxgbe/tom X-SVN-Commit-Revision: 351524 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Aug 2019 01:16:03 -0000 Author: np Date: Tue Aug 27 01:16:02 2019 New Revision: 351524 URL: https://svnweb.freebsd.org/changeset/base/351524 Log: cxgbe/t4_tom: Limit work requests with immediate payload to a single descriptor. The per-tid tx credits are in demand during active Tx and it's best not to use too many just for payload. Sponsored by: Chelsio Communications Modified: head/sys/dev/cxgbe/tom/t4_cpl_io.c Modified: head/sys/dev/cxgbe/tom/t4_cpl_io.c ============================================================================== --- head/sys/dev/cxgbe/tom/t4_cpl_io.c Tue Aug 27 00:29:30 2019 (r351523) +++ head/sys/dev/cxgbe/tom/t4_cpl_io.c Tue Aug 27 01:16:02 2019 (r351524) @@ -540,7 +540,7 @@ t4_close_conn(struct adapter *sc, struct toepcb *toep) static inline int max_imm_payload(int tx_credits) { - const int n = 2; /* Use only up to 2 desc for imm. data WR */ + const int n = 1; /* Use no more than one desc for imm. data WR */ KASSERT(tx_credits >= 0 && tx_credits <= MAX_OFLD_TX_CREDITS,