From sacadmin Fri Mar 6 15:04:41 2009 Received: from sac.sfbay.sun.com (localhost [127.0.0.1]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n26N4fBi029596; Fri, 6 Mar 2009 15:04:41 -0800 (PST) Received: (from meem@localhost) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8/Submit) id n26N4fcb029592; Fri, 6 Mar 2009 15:04:41 -0800 (PST) Date: Fri, 6 Mar 2009 15:04:41 -0800 (PST) From: Peter Memishian Message-Id: <200903062304.n26N4fcb029592@sac.sfbay.sun.com> To: PSARC-record@sac.sfbay.sun.com Subject: DLPI Notification Tweak [PSARC/2009/162 Self Review] Status: RO Content-Length: 560 Template Version: @(#)sac_nextcase 1.68 02/23/09 SMI This information is Copyright 2009 Sun Microsystems 1. Introduction 1.1. Project/Component Working Name: DLPI Notification Tweak 1.2. Name of Document Author/Supplier: Author: Peter Memishian 1.3 Date of This Document: 06 March, 2009 4. Technical Description See the case directory for more detail 6. Resources and Schedule 6.4. Steering Committee requested information 6.4.1. Consolidation C-team Name: ON 6.5. ARC review type: Automatic 6.6. ARC Exposure: open From peter.memishian@sun.com Fri Mar 6 15:21:16 2009 Received: from sunmail5.uk.sun.com (sunmail5.UK.Sun.COM [129.156.85.165]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n26NLFgn000737 for ; Fri, 6 Mar 2009 15:21:15 -0800 (PST) Received: from nwk-avmta-2.sfbay.sun.com (nwk-avmta-2.SFBay.Sun.COM [129.145.155.6]) by sunmail5.uk.sun.com (8.13.8+Sun/8.13.8/ENSMAIL,v2.2) with ESMTP id n26NLClk002395 for <@sunmail2sca.sfbay.sun.com:psarc-ext@sun.com>; Fri, 6 Mar 2009 23:21:14 GMT Received: from pmxchannel-daemon.nwk-avmta-2.sfbay.sun.com by nwk-avmta-2.sfbay.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0KG30082LY7EHT00@nwk-avmta-2.sfbay.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Fri, 06 Mar 2009 15:21:14 -0800 (PST) Received: from dm-eng-02.sfbay.sun.com ([129.146.11.32]) by nwk-avmta-2.sfbay.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KG300MNHY7D80A0@nwk-avmta-2.sfbay.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Fri, 06 Mar 2009 15:21:13 -0800 (PST) Received: from triplex.eng.sun.com (triplex.SFBay.Sun.COM [129.146.108.208]) by dm-eng-02.sfbay.sun.com (8.13.8+Sun/8.13.8/ENSMAIL,v2.2) with ESMTP id n26NLD7I044781; Fri, 06 Mar 2009 15:21:13 -0800 (PST) Received: from triplex.eng.sun.com (localhost [127.0.0.1] (may be forged)) by triplex.eng.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n26NLDaY028807; Fri, 06 Mar 2009 15:21:13 -0800 (PST) Received: (from meem@localhost) by triplex.eng.sun.com (8.14.3+Sun/8.14.3/Submit) id n26NLDRW028804; Fri, 06 Mar 2009 15:21:13 -0800 (PST) Date: Fri, 06 Mar 2009 15:21:13 -0800 From: Peter Memishian Subject: PSARC/2009/162 DLPI Notification Tweak To: psarc-ext@sun.com Cc: clearview-discuss@opensolaris.org Reply-to: peter.memishian@sun.com Message-id: <18865.45033.573739.854863@gargle.gargle.HOWL> MIME-version: 1.0 X-Mailer: VM 7.19 under 21.4 (patch 21) "Educational Television" XEmacs Lucid Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT X-PMX-Version: 5.4.1.325704 X-Authentication-warning: triplex.eng.sun.com: meem set sender to peter.memishian@sun.com using -f Status: RO Content-Length: 1371 This case proposes to remove the libdlpi requirement that dlpi_bind(3DLPI) be issued prior to dlpi_enabnotify(3DLPI). No other changes are proposed. Since this is a simple change with no impact on backward compatibility and an immediate need, I'm filing this as "closed approved automatic". Patch binding is requested but minor would suffice for our needs. ---8<--- When dlpi_enabnotify() was introduced as part of PSARC/2007/514, we restricted dlpi_enabnotify() to return an error if the DLPI handle was not in the DL_IDLE state. This was done because the ce(7D) and gem(7D) drivers (incorrectly) had this restriction, and we wanted to ensure that the API behavior was consistent across different drivers. However, after that case was approved, Clearview Nemo Unification and Vanity Naming (PSARC/2006/499) integrated into Solaris, shielding libdlpi consumers from this issue. Moreover, we now have commitment from the ce and gem owners to fix the drivers (as tracked by CRs 6598421 and 6809577). In short, the original restriction is no longer necessary. Further, the original restriction is now regressing performance in IPMP configurations because because recent enhancements to in.mpathd(1M) require it to use dlpi_enabnotify(), which in turn require it to use dlpi_bind() (because of this issue), which in turn disables a fastpath inside GLDv3. -- meem From carlsonj@phorcys.east.sun.com Mon Mar 9 06:10:03 2009 Received: from sunmail4.singapore.sun.com (sunmail4.Singapore.Sun.COM [129.158.71.19]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n29DA29L007229 for ; Mon, 9 Mar 2009 06:10:02 -0700 (PDT) Received: from nwk-avmta-2.sfbay.sun.com (nwk-avmta-2.SFBay.Sun.COM [129.145.155.6]) by sunmail4.singapore.sun.com (8.13.4+Sun/8.13.3/ENSMAIL,v2.2) with ESMTP id n29D9qkc003642; Mon, 9 Mar 2009 21:09:59 +0800 (SGT) Received: from pmxchannel-daemon.nwk-avmta-2.sfbay.sun.com by nwk-avmta-2.sfbay.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0KG800H0DPWK5U00@nwk-avmta-2.sfbay.sun.com>; Mon, 09 Mar 2009 06:09:56 -0700 (PDT) Received: from phorcys.east.sun.com ([129.148.174.143]) by nwk-avmta-2.sfbay.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KG8006B5PWHWLB0@nwk-avmta-2.sfbay.sun.com>; Mon, 09 Mar 2009 06:09:54 -0700 (PDT) Received: from phorcys.east.sun.com (localhost [127.0.0.1]) by phorcys.east.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n29D2EgO017126; Mon, 09 Mar 2009 09:02:14 -0400 (EDT) Received: (from carlsonj@localhost) by phorcys.east.sun.com (8.14.3+Sun/8.14.3/Submit) id n29D2EwH017123; Mon, 09 Mar 2009 09:02:14 -0400 (EDT) Date: Mon, 09 Mar 2009 09:02:14 -0400 From: James Carlson Subject: Re: PSARC/2009/162 DLPI Notification Tweak In-reply-to: <18865.45033.573739.854863@gargle.gargle.HOWL> To: Peter.Memishian@sun.com Cc: PSARC-ext@sun.com, clearview-discuss@opensolaris.org Message-id: <18869.4950.603823.97186@gargle.gargle.HOWL> MIME-version: 1.0 X-Mailer: VM 7.01 under Emacs 21.3.1 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT X-PMX-Version: 5.4.1.325704 References: <18865.45033.573739.854863@gargle.gargle.HOWL> Status: RO Content-Length: 406 Peter Memishian writes: > This case proposes to remove the libdlpi requirement that dlpi_bind(3DLPI) > be issued prior to dlpi_enabnotify(3DLPI). No other changes are proposed. +1 -- James Carlson, Solaris Networking Sun Microsystems / 35 Network Drive 71.232W Vox +1 781 442 2084 MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677