From owner-svn-src-all@freebsd.org Mon Sep 14 15:21:24 2015 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3B05AA038B5; Mon, 14 Sep 2015 15:21:24 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 13B4B1966; Mon, 14 Sep 2015 15:21:24 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.70]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id t8EFLNEI027098; Mon, 14 Sep 2015 15:21:23 GMT (envelope-from mav@FreeBSD.org) Received: (from mav@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id t8EFLNme027097; Mon, 14 Sep 2015 15:21:23 GMT (envelope-from mav@FreeBSD.org) Message-Id: <201509141521.t8EFLNme027097@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mav set sender to mav@FreeBSD.org using -f From: Alexander Motin Date: Mon, 14 Sep 2015 15:21:23 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r287784 - head/sys/cam/ctl X-SVN-Group: head 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: 2.1.20 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: Mon, 14 Sep 2015 15:21:24 -0000 Author: mav Date: Mon Sep 14 15:21:23 2015 New Revision: 287784 URL: https://svnweb.freebsd.org/changeset/base/287784 Log: Implement data/status aggregation for secondary HA node. For short read requests this reduces latency by 30%, reporting command completion after two interlink roundtrips instead of full three. Modified: head/sys/cam/ctl/ctl.c Modified: head/sys/cam/ctl/ctl.c ============================================================================== --- head/sys/cam/ctl/ctl.c Mon Sep 14 15:15:32 2015 (r287783) +++ head/sys/cam/ctl/ctl.c Mon Sep 14 15:21:23 2015 (r287784) @@ -978,6 +978,8 @@ ctl_isc_event_handler(ctl_ha_channel cha * when the datamove is complete. */ io->io_hdr.serializing_sc = msg->hdr.serializing_sc; + if (msg->hdr.status == CTL_SUCCESS) + io->io_hdr.status = msg->hdr.status; if (msg->dt.sg_sequence == 0) { i = msg->dt.kern_sg_entries + @@ -1060,6 +1062,8 @@ ctl_isc_event_handler(ctl_ha_channel cha memcpy(&io->scsiio.sense_data, &msg->scsi.sense_data, msg->scsi.sense_len); + if (msg->hdr.status == CTL_SUCCESS) + io->io_hdr.flags |= CTL_FLAG_STATUS_SENT; } ctl_enqueue_isc(io); break; @@ -12207,6 +12211,7 @@ ctl_datamove(union ctl_io *io) msg.hdr.original_sc = io->io_hdr.original_sc; msg.hdr.serializing_sc = io; msg.hdr.nexus = io->io_hdr.nexus; + msg.hdr.status = io->io_hdr.status; msg.dt.flags = io->io_hdr.flags; /* * We convert everything into a S/G list here. We can't @@ -12590,10 +12595,12 @@ ctl_datamove_remote_xfer(union ctl_io *i * failure. */ if ((rq == NULL) - && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) + && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE && + (io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS)) ctl_set_busy(&io->scsiio); - if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { + if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE && + (io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) { if (rq != NULL) ctl_dt_req_free(rq);