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GET /api/patches/574127/?format=api
{ "id": 574127, "url": "http://patchwork.ozlabs.org/api/patches/574127/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/1453919610-8197-1-git-send-email-atomnuker@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": "<1453919610-8197-1-git-send-email-atomnuker@gmail.com>", "list_archive_url": null, "date": "2016-01-27T18:33:30", "name": "ixgbe: add a callback to set the maximum transmit bitrate", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": false, "hash": "844b6d6cff50e07b872d5d98a313be3ac7c6a4ba", "submitter": { "id": 68195, "url": "http://patchwork.ozlabs.org/api/people/68195/?format=api", "name": "Rostislav Pehlivanov", "email": "atomnuker@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/1453919610-8197-1-git-send-email-atomnuker@gmail.com/mbox/", "series": [], "comments": "http://patchwork.ozlabs.org/api/patches/574127/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/574127/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 fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137])\n\tby ozlabs.org (Postfix) with ESMTP id B04B3140B0E\n\tfor <incoming@patchwork.ozlabs.org>;\n\tThu, 28 Jan 2016 05:42:46 +1100 (AEDT)", "from localhost (localhost [127.0.0.1])\n\tby fraxinus.osuosl.org (Postfix) with ESMTP id E13CF8A063;\n\tWed, 27 Jan 2016 18:42:45 +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 4Pl19Vn2pXbu; 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a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;\n\th=from:to:cc:subject:date:message-id;\n\tbh=Gmtx/jescMoCpO6hO/pdwikVGtBFQgENGEP1vzV1C/s=;\n\tb=HLFLFZF2ZSd6i0IS6VgIwY/+WUO+FRYNjOYMnGeVupPIdqemd1V1a4pGSGpp+L48WM\n\tzMUC77O6dqhdhMf7yZQ9fEEKkdj6ER111PkyyUnQn4fW8RBPdYI5ef4V2EHh1EBAD9iq\n\tDRhxZKCZ+KUgS+s+q+u5nLuuFpXjIVh0iSmAaTGOXDwS3GQ78w83yHDcjsqR73boO5Cy\n\t7SPyemYeCsXq+BmnrT+snOAy9WE6F6tpgSyE+LeKIXwTlzhMSGhQ59DHe4yuP1Rj5ILc\n\tyCb0eCykOO9AdgwAPYVcPiYv7B2Kx5dRPEvNNsPQF6lOoJXGJgiywRkDlE3xmWucu4kY\n\tsqvA==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20130820;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id;\n\tbh=Gmtx/jescMoCpO6hO/pdwikVGtBFQgENGEP1vzV1C/s=;\n\tb=KPGXbvg0s5hNGQHYcWWgSVEKHNi/3xshsRhI19eSo+L9vKgtCvpP9e6hAoQlCAMDja\n\thYffi0Bi7TFdW7UnNMi1Nst4g3YRedOxvqCjvXjB1oHG9IQBwLUPBc/+XZYZ8YDtozKy\n\tUqhtYu2lYlZcGyaegyRoo5TC8lgm7p7pv3buhTq1R/ih4pRlQg3YFl9ndoTDF8U0L19j\n\tq5dORzDtWmgVLOyJlaN9l815tpOI06/uBFLddWhVlfcHmvSiuGVDWcFbL5QhKfIs1DcS\n\tsrzzRjJkSvXPD/Moioj7pH6aO7HZ3s/gaRr/dERUQMI+fsaEmkVndmbEWOrt+1vR+rdY\n\tuvtg==", "X-Gm-Message-State": "AG10YOSrR/HDMIVcoMHGUcaQZ6RDtosV9ipJKtP++hKeAQrOh+l2OHEVWZX6a/r8l1mp4A==", "X-Received": "by 10.28.211.141 with SMTP id k135mr30130054wmg.51.1453919617666;\n\tWed, 27 Jan 2016 10:33:37 -0800 (PST)", "From": "Rostislav Pehlivanov <atomnuker@gmail.com>", "To": "intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org, jeffrey.t.kirsher@intel.com,\n\tjesse.brandeburg@intel.com, shannon.nelson@intel.com", "Date": "Wed, 27 Jan 2016 18:33:30 +0000", "Message-Id": "<1453919610-8197-1-git-send-email-atomnuker@gmail.com>", "X-Mailer": "git-send-email 2.7.0", "X-Mailman-Approved-At": "Wed, 27 Jan 2016 18:42:45 +0000", "Cc": "Rostislav Pehlivanov <atomnuker@gmail.com>", "Subject": "[Intel-wired-lan] [PATCH] ixgbe: add a callback to set the maximum\n\ttransmit bitrate", "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": "This commit adds a callback which allows to adjust the maximum transmit\nbitrate the card can output. This makes it possible to get a smooth\ntraffic instead of the default burst-y behaviour when trying to output\ne.g. a video stream.\n\nMuch of the logic needed to get a correct bcnrc_val was taken from the\nixgbe_set_vf_rate_limit() function.\n\nSigned-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>\n---\n drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 31 ++++++++++++++++++++++++++\n drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 2 +-\n drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.h | 1 +\n 3 files changed, 33 insertions(+), 1 deletion(-)", "diff": "diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c\nindex c4003a8..d05455c 100644\n--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c\n+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c\n@@ -1084,6 +1084,36 @@ static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter)\n }\n \n /**\n+ * ixgbe_tx_maxrate - callback to set the maximum per-queue bitrate\n+ **/\n+static int ixgbe_tx_maxrate(struct net_device *netdev,\n+\t\t\t int queue_index, u32 maxrate)\n+{\n+\tstruct ixgbe_adapter *adapter = netdev_priv(netdev);\n+\tstruct ixgbe_hw *hw = &adapter->hw;\n+\tu32 bcnrc_val = ixgbe_link_mbps(adapter);\n+\n+\tif (!maxrate)\n+\t\treturn 0;\n+\n+\t/* Calculate the rate factor values to set */\n+\tbcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;\n+\tbcnrc_val /= maxrate;\n+\n+\t/* clear everything but the rate factor */\n+\tbcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |\n+\tIXGBE_RTTBCNRC_RF_DEC_MASK;\n+\n+\t/* enable the rate scheduler */\n+\tbcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;\n+\n+\tIXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, queue_index);\n+\tIXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);\n+\n+\treturn 0;\n+}\n+\n+/**\n * ixgbe_clean_tx_irq - Reclaim resources after transmit completes\n * @q_vector: structure containing interrupt and ring information\n * @tx_ring: tx ring to clean\n@@ -8646,6 +8676,7 @@ static const struct net_device_ops ixgbe_netdev_ops = {\n \t.ndo_set_mac_address\t= ixgbe_set_mac,\n \t.ndo_change_mtu\t\t= ixgbe_change_mtu,\n \t.ndo_tx_timeout\t\t= ixgbe_tx_timeout,\n+\t.ndo_set_tx_maxrate\t= ixgbe_tx_maxrate,\n \t.ndo_vlan_rx_add_vid\t= ixgbe_vlan_rx_add_vid,\n \t.ndo_vlan_rx_kill_vid\t= ixgbe_vlan_rx_kill_vid,\n \t.ndo_do_ioctl\t\t= ixgbe_ioctl,\ndiff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c\nindex 8025a3f..f9ca7d5 100644\n--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c\n+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c\n@@ -1395,7 +1395,7 @@ out:\n \treturn err;\n }\n \n-static int ixgbe_link_mbps(struct ixgbe_adapter *adapter)\n+int ixgbe_link_mbps(struct ixgbe_adapter *adapter)\n {\n \tswitch (adapter->link_speed) {\n \tcase IXGBE_LINK_SPEED_100_FULL:\ndiff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.h\nindex dad9257..47e65e2 100644\n--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.h\n+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.h\n@@ -44,6 +44,7 @@ void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter);\n int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int queue, u8 *mac);\n int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int queue, u16 vlan,\n \t\t\t u8 qos);\n+int ixgbe_link_mbps(struct ixgbe_adapter *adapter);\n int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,\n \t\t\tint max_tx_rate);\n int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting);\n", "prefixes": [] }