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GET /api/patches/758161/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 758161,
    "url": "http://patchwork.ozlabs.org/api/patches/758161/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20170503172904.9788-12-jacob.e.keller@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": "<20170503172904.9788-12-jacob.e.keller@intel.com>",
    "list_archive_url": null,
    "date": "2017-05-03T17:29:00",
    "name": "[v4,11/15] ixgbe: add statistic indicating number of skipped Tx timestamps",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": false,
    "hash": "2c405bb0ec31774945c51101b511d42f6485c40a",
    "submitter": {
        "id": 9784,
        "url": "http://patchwork.ozlabs.org/api/people/9784/?format=api",
        "name": "Jacob Keller",
        "email": "jacob.e.keller@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/20170503172904.9788-12-jacob.e.keller@intel.com/mbox/",
    "series": [],
    "comments": "http://patchwork.ozlabs.org/api/patches/758161/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/758161/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\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 3wJ4sJ0s6Bz9rxw\n\tfor <incoming@patchwork.ozlabs.org>;\n\tThu,  4 May 2017 03:29:24 +1000 (AEST)",
            "from localhost (localhost [127.0.0.1])\n\tby hemlock.osuosl.org (Postfix) with ESMTP id ACCE789B04;\n\tWed,  3 May 2017 17:29:22 +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 6Fk+UmkgrLyp; Wed,  3 May 2017 17:29:20 +0000 (UTC)",
            "from ash.osuosl.org (ash.osuosl.org [140.211.166.34])\n\tby hemlock.osuosl.org (Postfix) with ESMTP id 20EE289B6B;\n\tWed,  3 May 2017 17:29:19 +0000 (UTC)",
            "from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136])\n\tby ash.osuosl.org (Postfix) with ESMTP id 2A0471C0F65\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tWed,  3 May 2017 17:29:15 +0000 (UTC)",
            "from localhost (localhost [127.0.0.1])\n\tby silver.osuosl.org (Postfix) with ESMTP id 267272FC9E\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tWed,  3 May 2017 17:29:15 +0000 (UTC)",
            "from silver.osuosl.org ([127.0.0.1])\n\tby localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024)\n\twith ESMTP id LkbctDrBEkIL for <intel-wired-lan@lists.osuosl.org>;\n\tWed,  3 May 2017 17:29:14 +0000 (UTC)",
            "from mga03.intel.com (mga03.intel.com [134.134.136.65])\n\tby silver.osuosl.org (Postfix) with ESMTPS id BBB933018D\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tWed,  3 May 2017 17:29:13 +0000 (UTC)",
            "from orsmga002.jf.intel.com ([10.7.209.21])\n\tby orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t03 May 2017 10:29:12 -0700",
            "from jekeller-desk.amr.corp.intel.com (HELO\n\tjekeller-desk.jekeller.internal) ([10.166.35.158])\n\tby orsmga002.jf.intel.com with ESMTP; 03 May 2017 10:29:12 -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-ExtLoop1": "1",
        "X-IronPort-AV": "E=Sophos;i=\"5.38,284,1491289200\"; d=\"scan'208\";a=\"82071031\"",
        "From": "Jacob Keller <jacob.e.keller@intel.com>",
        "To": "Intel Wired LAN <intel-wired-lan@lists.osuosl.org>",
        "Date": "Wed,  3 May 2017 10:29:00 -0700",
        "Message-Id": "<20170503172904.9788-12-jacob.e.keller@intel.com>",
        "X-Mailer": "git-send-email 2.13.0.rc0.317.gcc792a6cad5a",
        "In-Reply-To": "<20170503172904.9788-1-jacob.e.keller@intel.com>",
        "References": "<20170503172904.9788-1-jacob.e.keller@intel.com>",
        "Cc": "Richard Cochran <richardcochran@gmail.com>",
        "Subject": "[Intel-wired-lan] [PATCH v4 11/15] ixgbe: add statistic indicating\n\tnumber of skipped Tx timestamps",
        "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": "The ixgbe driver can only handle one Tx timestamp request at a time.\nThis means it is possible for an application timestamp request to be\nignored.\n\nThere is no easy way for an administrator to determine if this occurred.\nAdd a new statistic which tracks this, tx_hwtstamp_skipped.\n\nSigned-off-by: Jacob Keller <jacob.e.keller@intel.com>\n---\n drivers/net/ethernet/intel/ixgbe/ixgbe.h         |  1 +\n drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c |  3 +++\n drivers/net/ethernet/intel/ixgbe/ixgbe_main.c    | 21 ++++++++++++---------\n 3 files changed, 16 insertions(+), 9 deletions(-)",
    "diff": "diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h\nindex 76263762bea1..eb36106218ad 100644\n--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h\n+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h\n@@ -733,6 +733,7 @@ struct ixgbe_adapter {\n \tstruct timecounter hw_tc;\n \tu32 base_incval;\n \tu32 tx_hwtstamp_timeouts;\n+\tu32 tx_hwtstamp_skipped;\n \tu32 rx_hwtstamp_cleared;\n \tvoid (*ptp_setup_sdp)(struct ixgbe_adapter *);\n \ndiff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c\nindex cced74dd5a63..0b75d304b009 100644\n--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c\n+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c\n@@ -111,6 +111,9 @@ static const struct ixgbe_stats ixgbe_gstrings_stats[] = {\n \t{\"os2bmc_tx_by_bmc\", IXGBE_STAT(stats.b2ospc)},\n \t{\"os2bmc_tx_by_host\", IXGBE_STAT(stats.o2bspc)},\n \t{\"os2bmc_rx_by_host\", IXGBE_STAT(stats.b2ogprc)},\n+\t{\"tx_hwtstamp_timeouts\", IXGBE_STAT(tx_hwtstamp_timeouts)},\n+\t{\"tx_hwtstamp_skipped\", IXGBE_STAT(tx_hwtstamp_skipped)},\n+\t{\"rx_hwtstamp_cleared\", IXGBE_STAT(rx_hwtstamp_cleared)},\n #ifdef IXGBE_FCOE\n \t{\"fcoe_bad_fccrc\", IXGBE_STAT(stats.fccrc)},\n \t{\"rx_fcoe_dropped\", IXGBE_STAT(stats.fcoerpdc)},\ndiff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c\nindex f93330bc7b97..85a10458ab59 100644\n--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c\n+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c\n@@ -8346,16 +8346,19 @@ netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,\n \tprotocol = vlan_get_protocol(skb);\n \n \tif (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&\n-\t    adapter->ptp_clock &&\n-\t    !test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS,\n-\t\t\t\t   &adapter->state)) {\n-\t\tskb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;\n-\t\ttx_flags |= IXGBE_TX_FLAGS_TSTAMP;\n+\t    adapter->ptp_clock) {\n+\t\tif (!test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS,\n+\t\t\t\t\t   &adapter->state)) {\n+\t\t\tskb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;\n+\t\t\ttx_flags |= IXGBE_TX_FLAGS_TSTAMP;\n \n-\t\t/* schedule check for Tx timestamp */\n-\t\tadapter->ptp_tx_skb = skb_get(skb);\n-\t\tadapter->ptp_tx_start = jiffies;\n-\t\tschedule_work(&adapter->ptp_tx_work);\n+\t\t\t/* schedule check for Tx timestamp */\n+\t\t\tadapter->ptp_tx_skb = skb_get(skb);\n+\t\t\tadapter->ptp_tx_start = jiffies;\n+\t\t\tschedule_work(&adapter->ptp_tx_work);\n+\t\t} else {\n+\t\t\tadapter->tx_hwtstamp_skipped++;\n+\t\t}\n \t}\n \n \tskb_tx_timestamp(skb);\n",
    "prefixes": [
        "v4",
        "11/15"
    ]
}