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GET /api/patches/560304/?format=api
{ "id": 560304, "url": "http://patchwork.ozlabs.org/api/patches/560304/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/1450823114-29514-6-git-send-email-deepthi.kavalur@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": "<1450823114-29514-6-git-send-email-deepthi.kavalur@intel.com>", "list_archive_url": null, "date": "2015-12-22T22:25:07", "name": "[next,S24,05/12] i40evf: add new write-back mode", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": false, "hash": "5ea898563dc0683f50a1f05fcf3846018f60ac80", "submitter": { "id": 67654, "url": "http://patchwork.ozlabs.org/api/people/67654/?format=api", "name": "Deepthi Kavalur", "email": "deepthi.kavalur@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/1450823114-29514-6-git-send-email-deepthi.kavalur@intel.com/mbox/", "series": [], "comments": "http://patchwork.ozlabs.org/api/patches/560304/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/560304/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 hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133])\n\tby ozlabs.org (Postfix) with ESMTP id 11F28140320\n\tfor <incoming@patchwork.ozlabs.org>;\n\tWed, 23 Dec 2015 09:25:21 +1100 (AEDT)", "from localhost (localhost [127.0.0.1])\n\tby hemlock.osuosl.org (Postfix) with ESMTP id 5C83E95908;\n\tTue, 22 Dec 2015 22:25:20 +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 K343HjVeCH9v; Tue, 22 Dec 2015 22:25:18 +0000 (UTC)", "from ash.osuosl.org (ash.osuosl.org [140.211.166.34])\n\tby hemlock.osuosl.org (Postfix) with ESMTP id C94EA95902;\n\tTue, 22 Dec 2015 22:25:18 +0000 (UTC)", "from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138])\n\tby ash.osuosl.org (Postfix) with ESMTP id BE3A81C161D\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tTue, 22 Dec 2015 22:25:15 +0000 (UTC)", "from localhost (localhost [127.0.0.1])\n\tby whitealder.osuosl.org (Postfix) with ESMTP id BC37B90E1E\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tTue, 22 Dec 2015 22:25:15 +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 CqxE6PfEydwO for <intel-wired-lan@lists.osuosl.org>;\n\tTue, 22 Dec 2015 22:25:14 +0000 (UTC)", "from mga03.intel.com (mga03.intel.com [134.134.136.65])\n\tby whitealder.osuosl.org (Postfix) with ESMTP id AEAC7925BA\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tTue, 22 Dec 2015 22:25:13 +0000 (UTC)", "from orsmga002.jf.intel.com ([10.7.209.21])\n\tby orsmga103.jf.intel.com with ESMTP; 22 Dec 2015 14:25:13 -0800", "from dkavalur-mobl.amr.corp.intel.com (HELO\n\tlocalhost.localdomain.localdomain) ([134.134.176.61])\n\tby orsmga002.jf.intel.com with ESMTP; 22 Dec 2015 14:25:13 -0800" ], "X-Virus-Scanned": [ "amavisd-new at osuosl.org", "amavisd-new at osuosl.org" ], "X-Greylist": "domain auto-whitelisted by SQLgrey-1.7.6", "X-ExtLoop1": "1", "X-IronPort-AV": "E=Sophos;i=\"5.20,466,1444719600\"; d=\"scan'208\";a=\"877072055\"", "From": "Deepthi Kavalur <deepthi.kavalur@intel.com>", "To": "intel-wired-lan@lists.osuosl.org", "Date": "Tue, 22 Dec 2015 14:25:07 -0800", "Message-Id": "<1450823114-29514-6-git-send-email-deepthi.kavalur@intel.com>", "X-Mailer": "git-send-email 2.1.0", "In-Reply-To": "<1450823114-29514-1-git-send-email-deepthi.kavalur@intel.com>", "References": "<1450823114-29514-1-git-send-email-deepthi.kavalur@intel.com>", "Subject": "[Intel-wired-lan] [next PATCH S24 05/12] i40evf: add new write-back\n\tmode", "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>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "intel-wired-lan-bounces@lists.osuosl.org", "Sender": "\"Intel-wired-lan\" <intel-wired-lan-bounces@lists.osuosl.org>" }, "content": "From: Anjali Singhai Jain <anjali.singhai@intel.com>\n\nAdd write-back on interrupt throttle rate timer expiration support\nfor the i40evf driver, when running on X722 devices.\n\nSigned-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>\n---\n drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 6 ++++++\n drivers/net/ethernet/intel/i40evf/i40e_txrx.c | 16 ++++++++++++++++\n drivers/net/ethernet/intel/i40evf/i40evf_main.c | 5 +++++\n 3 files changed, 27 insertions(+)", "diff": "diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c\nindex 3cc98b0..8c02fa9 100644\n--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c\n+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c\n@@ -1222,6 +1222,12 @@ static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)\n \tif (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING)\n \t\tvfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING;\n \n+\tif (pf->flags & I40E_FLAG_WB_ON_ITR_CAPABLE) {\n+\t\tif (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)\n+\t\t\tvfres->vf_offload_flags |=\n+\t\t\t\t\tI40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;\n+\t}\n+\n \tvfres->num_vsis = num_vsis;\n \tvfres->num_queue_pairs = vf->num_queue_pairs;\n \tvfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;\ndiff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c\nindex ed4934a..0e2c627 100644\n--- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c\n+++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c\n@@ -252,6 +252,22 @@ static bool i40e_clean_tx_irq(struct i40e_ring *tx_ring, int budget)\n \ttx_ring->q_vector->tx.total_bytes += total_bytes;\n \ttx_ring->q_vector->tx.total_packets += total_packets;\n \n+\tif (tx_ring->flags & I40E_TXR_FLAGS_WB_ON_ITR) {\n+\t\tunsigned int j = 0;\n+\t\t/* check to see if there are < 4 descriptors\n+\t\t * waiting to be written back, then kick the hardware to force\n+\t\t * them to be written back in case we stay in NAPI.\n+\t\t * In this mode on X722 we do not enable Interrupt.\n+\t\t */\n+\t\tj = i40evf_get_tx_pending(tx_ring);\n+\n+\t\tif (budget &&\n+\t\t ((j / (WB_STRIDE + 1)) == 0) && (j > 0) &&\n+\t\t !test_bit(__I40E_DOWN, &tx_ring->vsi->state) &&\n+\t\t (I40E_DESC_UNUSED(tx_ring) != tx_ring->count))\n+\t\t\ttx_ring->arm_wb = true;\n+\t}\n+\n \tnetdev_tx_completed_queue(netdev_get_tx_queue(tx_ring->netdev,\n \t\t\t\t\t\t tx_ring->queue_index),\n \t\t\t\t total_packets, total_bytes);\ndiff --git a/drivers/net/ethernet/intel/i40evf/i40evf_main.c b/drivers/net/ethernet/intel/i40evf/i40evf_main.c\nindex 7bdb9f9..ab77e20 100644\n--- a/drivers/net/ethernet/intel/i40evf/i40evf_main.c\n+++ b/drivers/net/ethernet/intel/i40evf/i40evf_main.c\n@@ -2511,6 +2511,11 @@ static void i40evf_init_task(struct work_struct *work)\n \tif (adapter->vf_res->vf_offload_flags &\n \t\t I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)\n \t\tadapter->flags |= I40EVF_FLAG_WB_ON_ITR_CAPABLE;\n+\n+\tif (adapter->vf_res->vf_offload_flags &\n+\t I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)\n+\t\tadapter->flags |= I40EVF_FLAG_WB_ON_ITR_CAPABLE;\n+\n \terr = i40evf_request_misc_irq(adapter);\n \tif (err)\n \t\tgoto err_sw_init;\n", "prefixes": [ "next", "S24", "05/12" ] }