From owner-svn-src-all@freebsd.org Wed May 29 16:01:35 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 49CED15A5F5C; Wed, 29 May 2019 16:01:35 +0000 (UTC) (envelope-from br@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 E264672C58; Wed, 29 May 2019 16:01:34 +0000 (UTC) (envelope-from br@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 BF0414089; Wed, 29 May 2019 16:01:34 +0000 (UTC) (envelope-from br@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x4TG1Y20084084; Wed, 29 May 2019 16:01:34 GMT (envelope-from br@FreeBSD.org) Received: (from br@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x4TG1YDx084083; Wed, 29 May 2019 16:01:34 GMT (envelope-from br@FreeBSD.org) Message-Id: <201905291601.x4TG1YDx084083@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: br set sender to br@FreeBSD.org using -f From: Ruslan Bukin Date: Wed, 29 May 2019 16:01:34 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r348364 - head/sys/dev/xdma X-SVN-Group: head X-SVN-Commit-Author: br X-SVN-Commit-Paths: head/sys/dev/xdma X-SVN-Commit-Revision: 348364 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: E264672C58 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.97 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.97)[-0.973,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] 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: Wed, 29 May 2019 16:01:35 -0000 Author: br Date: Wed May 29 16:01:34 2019 New Revision: 348364 URL: https://svnweb.freebsd.org/changeset/base/348364 Log: Don't copy the data from bounce buffer back to the mbuf if channel does not use bounce buffering. Sponsored by: DARPA, AFRL Modified: head/sys/dev/xdma/xdma_sg.c Modified: head/sys/dev/xdma/xdma_sg.c ============================================================================== --- head/sys/dev/xdma/xdma_sg.c Wed May 29 15:53:33 2019 (r348363) +++ head/sys/dev/xdma/xdma_sg.c Wed May 29 16:01:34 2019 (r348364) @@ -348,7 +348,8 @@ xchan_seg_done(xdma_channel_t *xchan, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(xchan->dma_tag_bufs, b->map); } else { - if (xr->req_type == XR_TYPE_MBUF && + if ((xchan->caps & XCHAN_CAP_NOBUFS) == 0 && + xr->req_type == XR_TYPE_MBUF && xr->direction == XDMA_DEV_TO_MEM) m_copyback(xr->m, 0, st->transferred, (void *)xr->buf.vaddr);