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GET /api/patches/706701/?format=api
{ "id": 706701, "url": "http://patchwork.ozlabs.org/api/patches/706701/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20161217134000.31640-2-bjorn.topel@gmail.com/", "project": { "id": 46, "url": "http://patchwork.ozlabs.org/api/projects/46/?format=api", "name": "Intel Wired Ethernet development", "link_name": "intel-wired-lan", "list_id": "intel-wired-lan.osuosl.org", "list_email": "intel-wired-lan@osuosl.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20161217134000.31640-2-bjorn.topel@gmail.com>", "list_archive_url": null, "date": "2016-12-17T13:39:57", "name": "[v4,1/4] i40e: Sync DMA region prior skbuff allocation", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": false, "hash": "cfbbac1a28ab0134dbb4f90628e9100c345827bd", "submitter": { "id": 70569, "url": "http://patchwork.ozlabs.org/api/people/70569/?format=api", "name": "Björn Töpel", "email": "bjorn.topel@gmail.com" }, "delegate": { "id": 68, "url": "http://patchwork.ozlabs.org/api/users/68/?format=api", "username": "jtkirshe", "first_name": "Jeff", "last_name": "Kirsher", "email": "jeffrey.t.kirsher@intel.com" }, "mbox": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20161217134000.31640-2-bjorn.topel@gmail.com/mbox/", "series": [], "comments": "http://patchwork.ozlabs.org/api/patches/706701/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/706701/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<intel-wired-lan-bounces@lists.osuosl.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Delivered-To": [ "patchwork-incoming@bilbo.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Received": [ "from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138])\n\t(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3tgpGH5vgTz9t25\n\tfor <incoming@patchwork.ozlabs.org>;\n\tSun, 18 Dec 2016 00:40:23 +1100 (AEDT)", "from localhost (localhost [127.0.0.1])\n\tby whitealder.osuosl.org (Postfix) with ESMTP id 4F2E384D91;\n\tSat, 17 Dec 2016 13:40:22 +0000 (UTC)", "from whitealder.osuosl.org ([127.0.0.1])\n\tby localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024)\n\twith ESMTP id jAdGVE1qygWr; Sat, 17 Dec 2016 13:40:17 +0000 (UTC)", "from ash.osuosl.org (ash.osuosl.org [140.211.166.34])\n\tby whitealder.osuosl.org (Postfix) with ESMTP id 8533184D21;\n\tSat, 17 Dec 2016 13:40:16 +0000 (UTC)", "from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137])\n\tby ash.osuosl.org (Postfix) with ESMTP id 33F7A1C0F9B\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tSat, 17 Dec 2016 13:40:14 +0000 (UTC)", "from localhost (localhost [127.0.0.1])\n\tby fraxinus.osuosl.org (Postfix) with ESMTP id 3014C85BF0\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tSat, 17 Dec 2016 13:40:14 +0000 (UTC)", "from fraxinus.osuosl.org ([127.0.0.1])\n\tby localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024)\n\twith ESMTP id ec2iAOZ7j5er for <intel-wired-lan@lists.osuosl.org>;\n\tSat, 17 Dec 2016 13:40:13 +0000 (UTC)", "from mga04.intel.com (mga04.intel.com [192.55.52.120])\n\tby fraxinus.osuosl.org (Postfix) with ESMTPS id C9DEC85A7C\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tSat, 17 Dec 2016 13:40:13 +0000 (UTC)", "from fmsmga001.fm.intel.com ([10.253.24.23])\n\tby fmsmga104.fm.intel.com with ESMTP; 17 Dec 2016 05:40:13 -0800", "from jabolger-mobl1.ger.corp.intel.com (HELO\n\tbtopel-mobl1.intel.com) ([10.252.31.3])\n\tby fmsmga001.fm.intel.com with ESMTP; 17 Dec 2016 05:40:11 -0800" ], "X-Virus-Scanned": [ "amavisd-new at osuosl.org", "amavisd-new at osuosl.org" ], "X-Greylist": "from auto-whitelisted by SQLgrey-1.7.6", "X-ExtLoop1": "1", "X-IronPort-AV": "E=Sophos; i=\"5.33,363,1477983600\"; d=\"scan'208\";\n\ta=\"1083168111\"", "From": "=?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= <bjorn.topel@gmail.com>", "To": "jeffrey.t.kirsher@intel.com,\n\tintel-wired-lan@lists.osuosl.org", "Date": "Sat, 17 Dec 2016 14:39:57 +0100", "Message-Id": "<20161217134000.31640-2-bjorn.topel@gmail.com>", "X-Mailer": "git-send-email 2.9.3", "In-Reply-To": "<20161217134000.31640-1-bjorn.topel@gmail.com>", "References": "<20161217134000.31640-1-bjorn.topel@gmail.com>", "MIME-Version": "1.0", "Cc": "daniel@iogearbox.net,\n\t=?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= <bjorn.topel@intel.com>,\n\tmagnus.karlsson@intel.com", "Subject": "[Intel-wired-lan] [PATCH v4 1/4] i40e: Sync DMA region prior skbuff\n\tallocation", "X-BeenThere": "intel-wired-lan@lists.osuosl.org", "X-Mailman-Version": "2.1.18-1", "Precedence": "list", "List-Id": "Intel Wired Ethernet Linux Kernel Driver Development\n\t<intel-wired-lan.lists.osuosl.org>", "List-Unsubscribe": "<http://lists.osuosl.org/mailman/options/intel-wired-lan>, \n\t<mailto:intel-wired-lan-request@lists.osuosl.org?subject=unsubscribe>", "List-Archive": "<http://lists.osuosl.org/pipermail/intel-wired-lan/>", "List-Post": "<mailto:intel-wired-lan@lists.osuosl.org>", "List-Help": "<mailto:intel-wired-lan-request@lists.osuosl.org?subject=help>", "List-Subscribe": "<http://lists.osuosl.org/mailman/listinfo/intel-wired-lan>, \n\t<mailto:intel-wired-lan-request@lists.osuosl.org?subject=subscribe>", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "base64", "Errors-To": "intel-wired-lan-bounces@lists.osuosl.org", "Sender": "\"Intel-wired-lan\" <intel-wired-lan-bounces@lists.osuosl.org>" }, "content": "From: Björn Töpel <bjorn.topel@intel.com>\n\nThis patch prepares i40e_fetch_rx_buffer() for upcoming XDP support,\nwhere there's a need to access the device buffers prior skbuff\nallocation.\n\nSigned-off-by: Björn Töpel <bjorn.topel@intel.com>\n---\n drivers/net/ethernet/intel/i40e/i40e_txrx.c | 14 +++++++-------\n 1 file changed, 7 insertions(+), 7 deletions(-)", "diff": "diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c\nindex 9de05a0e8201..8bdc95c9e9b7 100644\n--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c\n+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c\n@@ -1646,6 +1646,13 @@ struct sk_buff *i40e_fetch_rx_buffer(struct i40e_ring *rx_ring,\n \tpage = rx_buffer->page;\n \tprefetchw(page);\n \n+\t/* we are reusing so sync this buffer for CPU use */\n+\tdma_sync_single_range_for_cpu(rx_ring->dev,\n+\t\t\t\t rx_buffer->dma,\n+\t\t\t\t rx_buffer->page_offset,\n+\t\t\t\t size,\n+\t\t\t\t DMA_FROM_DEVICE);\n+\n \tif (likely(!skb)) {\n \t\tvoid *page_addr = page_address(page) + rx_buffer->page_offset;\n \n@@ -1671,13 +1678,6 @@ struct sk_buff *i40e_fetch_rx_buffer(struct i40e_ring *rx_ring,\n \t\tprefetchw(skb->data);\n \t}\n \n-\t/* we are reusing so sync this buffer for CPU use */\n-\tdma_sync_single_range_for_cpu(rx_ring->dev,\n-\t\t\t\t rx_buffer->dma,\n-\t\t\t\t rx_buffer->page_offset,\n-\t\t\t\t size,\n-\t\t\t\t DMA_FROM_DEVICE);\n-\n \t/* pull page into skb */\n \tif (i40e_add_rx_frag(rx_ring, rx_buffer, size, skb)) {\n \t\t/* hand second half of page back to the ring */\n", "prefixes": [ "v4", "1/4" ] }