From owner-svn-src-head@freebsd.org Tue Sep 29 09:25:52 2020 Return-Path: Delivered-To: svn-src-head@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 E32493FB065; Tue, 29 Sep 2020 09:25:52 +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) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 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 4C0vBm5j5Hz4WGy; Tue, 29 Sep 2020 09:25:52 +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 A6B7FC4E6; Tue, 29 Sep 2020 09:25:52 +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 08T9PqqM055302; Tue, 29 Sep 2020 09:25:52 GMT (envelope-from np@FreeBSD.org) Received: (from np@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 08T9PqJP055301; Tue, 29 Sep 2020 09:25:52 GMT (envelope-from np@FreeBSD.org) Message-Id: <202009290925.08T9PqJP055301@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: np set sender to np@FreeBSD.org using -f From: Navdeep Parhar Date: Tue, 29 Sep 2020 09:25:52 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r366247 - head/sys/dev/cxgbe X-SVN-Group: head X-SVN-Commit-Author: np X-SVN-Commit-Paths: head/sys/dev/cxgbe X-SVN-Commit-Revision: 366247 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Sep 2020 09:25:53 -0000 Author: np Date: Tue Sep 29 09:25:52 2020 New Revision: 366247 URL: https://svnweb.freebsd.org/changeset/base/366247 Log: cxgbe(4): Avoid unnecessary work in the firmware during netmap tx. Bind the netmap tx queues to a special '0xff' scheduling class which makes the firmware skip some processing related to rate limiting on the outgoing traffic. Future firmwares will do this automatically. MFC after: 1 week Sponsored by: Chelsio Communications Modified: head/sys/dev/cxgbe/t4_netmap.c Modified: head/sys/dev/cxgbe/t4_netmap.c ============================================================================== --- head/sys/dev/cxgbe/t4_netmap.c Tue Sep 29 09:11:51 2020 (r366246) +++ head/sys/dev/cxgbe/t4_netmap.c Tue Sep 29 09:25:52 2020 (r366247) @@ -329,6 +329,22 @@ alloc_nm_txq_hwq(struct vi_info *vi, struct sge_nm_txq nm_txq->udb = (volatile void *)udb; } + if (sc->params.fw_vers < FW_VERSION32(1, 25, 1, 0)) { + uint32_t param, val; + + param = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DMAQ) | + V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DMAQ_EQ_SCHEDCLASS_ETH) | + V_FW_PARAMS_PARAM_YZ(nm_txq->cntxt_id); + val = 0xff; + rc = -t4_set_params(sc, sc->mbox, sc->pf, 0, 1, ¶m, &val); + if (rc != 0) { + device_printf(vi->dev, + "failed to bind netmap txq %d to class 0xff: %d\n", + nm_txq->cntxt_id, rc); + rc = 0; + } + } + return (rc); }