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GET /api/patches/1115486/?format=api
{ "id": 1115486, "url": "http://patchwork.ozlabs.org/api/patches/1115486/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/1560411450-29121-5-git-send-email-magnus.karlsson@intel.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": "<1560411450-29121-5-git-send-email-magnus.karlsson@intel.com>", "list_archive_url": null, "date": "2019-06-13T07:37:28", "name": "[bpf-next,4/6] ixgbe: add support for AF_XDP need_wakup feature", "commit_ref": null, "pull_url": null, "state": "awaiting-upstream", "archived": false, "hash": "c5c20b4b720e4e2bea738291352e7f07f08e4909", "submitter": { "id": 72726, "url": "http://patchwork.ozlabs.org/api/people/72726/?format=api", "name": "Magnus Karlsson", "email": "magnus.karlsson@intel.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/1560411450-29121-5-git-send-email-magnus.karlsson@intel.com/mbox/", "series": [ { "id": 113704, "url": "http://patchwork.ozlabs.org/api/series/113704/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/list/?series=113704", "date": "2019-06-13T07:37:25", "name": "add need_wakeup flag to the AF_XDP rings", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/113704/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/1115486/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/1115486/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<intel-wired-lan-bounces@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" ], "Authentication-Results": [ "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=osuosl.org\n\t(client-ip=140.211.166.137; helo=fraxinus.osuosl.org;\n\tenvelope-from=intel-wired-lan-bounces@osuosl.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org;\n\tdmarc=fail (p=none dis=none) header.from=intel.com" ], "Received": [ "from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 45PrF03LnCz9sBb\n\tfor <incoming@patchwork.ozlabs.org>;\n\tFri, 14 Jun 2019 03:23:47 +1000 (AEST)", "from localhost (localhost [127.0.0.1])\n\tby fraxinus.osuosl.org (Postfix) with ESMTP id 9734F85E98;\n\tThu, 13 Jun 2019 17:23:46 +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 4YvhUpTDfPYu; Thu, 13 Jun 2019 17:23:45 +0000 (UTC)", "from ash.osuosl.org (ash.osuosl.org [140.211.166.34])\n\tby fraxinus.osuosl.org (Postfix) with ESMTP id 0131A86582;\n\tThu, 13 Jun 2019 17:23:45 +0000 (UTC)", "from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133])\n\tby ash.osuosl.org (Postfix) with ESMTP id 72CBE1BF363\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tThu, 13 Jun 2019 07:38:00 +0000 (UTC)", "from localhost (localhost [127.0.0.1])\n\tby hemlock.osuosl.org (Postfix) with ESMTP id 7012787E81\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tThu, 13 Jun 2019 07:38:00 +0000 (UTC)", "from hemlock.osuosl.org ([127.0.0.1])\n\tby localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024)\n\twith ESMTP id Th-vbn5AGETO for <intel-wired-lan@lists.osuosl.org>;\n\tThu, 13 Jun 2019 07:37:59 +0000 (UTC)", "from mga11.intel.com (mga11.intel.com [192.55.52.93])\n\tby hemlock.osuosl.org (Postfix) with ESMTPS id DD03585EE8\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tThu, 13 Jun 2019 07:37:59 +0000 (UTC)", "from orsmga004.jf.intel.com ([10.7.209.38])\n\tby fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t13 Jun 2019 00:37:59 -0700", "from mkarlsso-mobl.ger.corp.intel.com (HELO VM.ger.corp.intel.com)\n\t([10.103.211.41])\n\tby orsmga004.jf.intel.com with ESMTP; 13 Jun 2019 00:37:54 -0700" ], "X-Virus-Scanned": [ "amavisd-new at osuosl.org", "amavisd-new at osuosl.org" ], "X-Greylist": "domain auto-whitelisted by SQLgrey-1.7.6", "X-Amp-Result": "SKIPPED(no attachment in message)", "X-Amp-File-Uploaded": "False", "X-ExtLoop1": "1", "From": "Magnus Karlsson <magnus.karlsson@intel.com>", "To": "magnus.karlsson@intel.com, bjorn.topel@intel.com, ast@kernel.org,\n\tdaniel@iogearbox.net, netdev@vger.kernel.org, brouer@redhat.com", "Date": "Thu, 13 Jun 2019 09:37:28 +0200", "Message-Id": "<1560411450-29121-5-git-send-email-magnus.karlsson@intel.com>", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1560411450-29121-1-git-send-email-magnus.karlsson@intel.com>", "References": "<1560411450-29121-1-git-send-email-magnus.karlsson@intel.com>", "X-Mailman-Approved-At": "Thu, 13 Jun 2019 17:23:43 +0000", "Subject": "[Intel-wired-lan] [PATCH bpf-next 4/6] ixgbe: add support for\n\tAF_XDP need_wakup feature", "X-BeenThere": "intel-wired-lan@osuosl.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "Intel Wired Ethernet Linux Kernel Driver Development\n\t<intel-wired-lan.osuosl.org>", "List-Unsubscribe": "<https://lists.osuosl.org/mailman/options/intel-wired-lan>, \n\t<mailto:intel-wired-lan-request@osuosl.org?subject=unsubscribe>", "List-Archive": "<http://lists.osuosl.org/pipermail/intel-wired-lan/>", "List-Post": "<mailto:intel-wired-lan@osuosl.org>", "List-Help": "<mailto:intel-wired-lan-request@osuosl.org?subject=help>", "List-Subscribe": "<https://lists.osuosl.org/mailman/listinfo/intel-wired-lan>, \n\t<mailto:intel-wired-lan-request@osuosl.org?subject=subscribe>", "Cc": "axboe@kernel.dk, maximmi@mellanox.com, kevin.laatz@intel.com,\n\tjakub.kicinski@netronome.com, maciejromanfijalkowski@gmail.com,\n\tbruce.richardson@intel.com, ciara.loftus@intel.com,\n\tilias.apalodimas@linaro.org, xiaolong.ye@intel.com,\n\tintel-wired-lan@lists.osuosl.org, qi.z.zhang@intel.com,\n\tmaciej.fijalkowski@intel.com, bpf@vger.kernel.org", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "intel-wired-lan-bounces@osuosl.org", "Sender": "\"Intel-wired-lan\" <intel-wired-lan-bounces@osuosl.org>" }, "content": "This patch adds support for the need_wakeup feature of AF_XDP. If the\napplication has told the kernel that it might sleep using the new bind\nflag XDP_USE_NEED_WAKEUP, the driver will then set this flag if it has\nno more buffers on the NIC Rx ring and yield to the application. For\nTx, it will set the flag if it has no outstanding Tx completion\ninterrupts and return to the application.\n\nSigned-off-by: Magnus Karlsson <magnus.karlsson@intel.com>\n---\n drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c | 16 ++++++++++++++++\n 1 file changed, 16 insertions(+)", "diff": "diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c\nindex 1a1add8..a4bb50d 100644\n--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c\n+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c\n@@ -597,6 +597,14 @@ int ixgbe_clean_rx_irq_zc(struct ixgbe_q_vector *q_vector,\n \tq_vector->rx.total_packets += total_rx_packets;\n \tq_vector->rx.total_bytes += total_rx_bytes;\n \n+\tif (xsk_umem_uses_might_sleep(rx_ring->xsk_umem)) {\n+\t\tif (failure || rx_ring->next_to_clean == rx_ring->next_to_use)\n+\t\t\txsk_set_rx_need_wakeup(rx_ring->xsk_umem);\n+\t\telse\n+\t\t\txsk_clear_rx_need_wakeup(rx_ring->xsk_umem);\n+\n+\t\treturn (int)total_rx_packets;\n+\t}\n \treturn failure ? budget : (int)total_rx_packets;\n }\n \n@@ -736,6 +744,14 @@ bool ixgbe_clean_xdp_tx_irq(struct ixgbe_q_vector *q_vector,\n \t\txsk_umem_complete_tx(umem, xsk_frames);\n \n \txmit_done = ixgbe_xmit_zc(tx_ring, q_vector->tx.work_limit);\n+\n+\tif (xsk_umem_uses_might_sleep(tx_ring->xsk_umem)) {\n+\t\tif (tx_ring->next_to_clean == tx_ring->next_to_use)\n+\t\t\txsk_set_tx_need_wakeup(tx_ring->xsk_umem);\n+\t\telse\n+\t\t\txsk_clear_tx_need_wakeup(tx_ring->xsk_umem);\n+\t}\n+\n \treturn budget > 0 && xmit_done;\n }\n \n", "prefixes": [ "bpf-next", "4/6" ] }