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GET /api/patches/1087421/?format=api
{ "id": 1087421, "url": "http://patchwork.ozlabs.org/api/patches/1087421/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20190418071108.35151-1-sasha.neftin@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": "<20190418071108.35151-1-sasha.neftin@intel.com>", "list_archive_url": null, "date": "2019-04-18T07:11:08", "name": "[v1,1/1] igc: Add flow control support", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": false, "hash": "e35b873b2232209b79473f753849a738d5cffb4b", "submitter": { "id": 69860, "url": "http://patchwork.ozlabs.org/api/people/69860/?format=api", "name": "Sasha Neftin", "email": "sasha.neftin@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/20190418071108.35151-1-sasha.neftin@intel.com/mbox/", "series": [ { "id": 103448, "url": "http://patchwork.ozlabs.org/api/series/103448/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/list/?series=103448", "date": "2019-04-18T07:11:08", "name": "[v1,1/1] igc: Add flow control support", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/103448/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/1087421/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/1087421/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=140.211.166.133; helo=hemlock.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 hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133])\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 44l9J73R5Vz9s3l\n\tfor <incoming@patchwork.ozlabs.org>;\n\tThu, 18 Apr 2019 17:11:16 +1000 (AEST)", "from localhost (localhost [127.0.0.1])\n\tby hemlock.osuosl.org (Postfix) with ESMTP id 39DA487B4F;\n\tThu, 18 Apr 2019 07:11:14 +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 F2ATvDtFPx7X; Thu, 18 Apr 2019 07:11:13 +0000 (UTC)", "from ash.osuosl.org (ash.osuosl.org [140.211.166.34])\n\tby hemlock.osuosl.org (Postfix) with ESMTP id 9707587AF4;\n\tThu, 18 Apr 2019 07:11:13 +0000 (UTC)", "from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133])\n\tby ash.osuosl.org (Postfix) with ESMTP id 4BDC61BF5E9\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tThu, 18 Apr 2019 07:11:12 +0000 (UTC)", "from localhost (localhost [127.0.0.1])\n\tby hemlock.osuosl.org (Postfix) with ESMTP id 4574C87AF4\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tThu, 18 Apr 2019 07:11:12 +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 Fo+y71huuSdD for <intel-wired-lan@lists.osuosl.org>;\n\tThu, 18 Apr 2019 07:11:11 +0000 (UTC)", "from mga17.intel.com (mga17.intel.com [192.55.52.151])\n\tby hemlock.osuosl.org (Postfix) with ESMTPS id 7FE9887A6E\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tThu, 18 Apr 2019 07:11:11 +0000 (UTC)", "from orsmga002.jf.intel.com ([10.7.209.21])\n\tby fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t18 Apr 2019 00:11:10 -0700", "from ccdlinuxdev08.iil.intel.com ([143.185.161.150])\n\tby orsmga002.jf.intel.com with ESMTP; 18 Apr 2019 00:11:09 -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", "X-IronPort-AV": "E=Sophos;i=\"5.60,365,1549958400\"; d=\"scan'208\";a=\"151851465\"", "From": "Sasha Neftin <sasha.neftin@intel.com>", "To": "intel-wired-lan@lists.osuosl.org", "Date": "Thu, 18 Apr 2019 10:11:08 +0300", "Message-Id": "<20190418071108.35151-1-sasha.neftin@intel.com>", "X-Mailer": "git-send-email 2.11.0", "Subject": "[Intel-wired-lan] [PATCH v1 1/1] igc: Add flow control support", "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>", "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 change adds flow control settings. This is required to\nenable the legacy flow control support.\n\nSigned-off-by: Sasha Neftin <sasha.neftin@intel.com>\n---\n drivers/net/ethernet/intel/igc/igc_defines.h | 3 +++\n drivers/net/ethernet/intel/igc/igc_main.c | 22 ++++++++++++++++++++++\n 2 files changed, 25 insertions(+)", "diff": "diff --git a/drivers/net/ethernet/intel/igc/igc_defines.h b/drivers/net/ethernet/intel/igc/igc_defines.h\nindex 5f6bc67cb33b..fc0ccfe38a20 100644\n--- a/drivers/net/ethernet/intel/igc/igc_defines.h\n+++ b/drivers/net/ethernet/intel/igc/igc_defines.h\n@@ -66,6 +66,9 @@\n \n #define IGC_CONNSW_AUTOSENSE_EN\t0x1\n \n+/* As per the EAS the maximum supported size is 9.5KB (9728 bytes) */\n+#define MAX_JUMBO_FRAME_SIZE\t0x2600\n+\n /* PBA constants */\n #define IGC_PBA_34K\t\t0x0022\n \ndiff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c\nindex cb8477b84d37..810d44fb77bf 100644\n--- a/drivers/net/ethernet/intel/igc/igc_main.c\n+++ b/drivers/net/ethernet/intel/igc/igc_main.c\n@@ -72,6 +72,28 @@ void igc_reset(struct igc_adapter *adapter)\n {\n \tstruct pci_dev *pdev = adapter->pdev;\n \tstruct igc_hw *hw = &adapter->hw;\n+\tstruct igc_fc_info *fc = &hw->fc;\n+\tu32 pba, hwm;\n+\n+\t/* Repartition PBA for greater than 9k mtu if required\n+\t */\n+\tpba = IGC_PBA_34K;\n+\n+\t/* flow control settings\n+\t * The high water mark must be low enough to fit one full frame\n+\t * after transmitting the pause frame. As such we must have enough\n+\t * space to allow for us to complete our current transmit and then\n+\t * receive the frame that is in progress from the link partner.\n+\t * Set it to:\n+\t * - the full Rx FIFO size minus one full Tx plus one full Rx frame\n+\t */\n+\thwm = (pba << 10) - (adapter->max_frame_size + MAX_JUMBO_FRAME_SIZE);\n+\n+\tfc->high_water = hwm & 0xFFFFFFF0;\t/* 16-byte granularity */\n+\tfc->low_water = fc->high_water - 16;\n+\tfc->pause_time = 0xFFFF;\n+\tfc->send_xon = 1;\n+\tfc->current_mode = fc->requested_mode;\n \n \thw->mac.ops.reset_hw(hw);\n \n", "prefixes": [ "v1", "1/1" ] }