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{
    "id": 10146,
    "url": "http://patches.dpdk.org/api/patches/10146/?format=api",
    "web_url": "http://patches.dpdk.org/project/dpdk/patch/1453960023-31402-1-git-send-email-shaopeng.he@intel.com/",
    "project": {
        "id": 1,
        "url": "http://patches.dpdk.org/api/projects/1/?format=api",
        "name": "DPDK",
        "link_name": "dpdk",
        "list_id": "dev.dpdk.org",
        "list_email": "dev@dpdk.org",
        "web_url": "http://core.dpdk.org",
        "scm_url": "git://dpdk.org/dpdk",
        "webscm_url": "http://git.dpdk.org/dpdk",
        "list_archive_url": "https://inbox.dpdk.org/dev",
        "list_archive_url_format": "https://inbox.dpdk.org/dev/{}",
        "commit_url_format": ""
    },
    "msgid": "<1453960023-31402-1-git-send-email-shaopeng.he@intel.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/1453960023-31402-1-git-send-email-shaopeng.he@intel.com",
    "date": "2016-01-28T05:47:03",
    "name": "[dpdk-dev] fm10k: fix switch manager high CPU usage",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "20fbabd7d53a8cdf24b4dfc4a2932f3001533e29",
    "submitter": {
        "id": 226,
        "url": "http://patches.dpdk.org/api/people/226/?format=api",
        "name": "He, Shaopeng",
        "email": "shaopeng.he@intel.com"
    },
    "delegate": null,
    "mbox": "http://patches.dpdk.org/project/dpdk/patch/1453960023-31402-1-git-send-email-shaopeng.he@intel.com/mbox/",
    "series": [],
    "comments": "http://patches.dpdk.org/api/patches/10146/comments/",
    "check": "pending",
    "checks": "http://patches.dpdk.org/api/patches/10146/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
        "X-Original-To": "patchwork@dpdk.org",
        "Delivered-To": "patchwork@dpdk.org",
        "Received": [
            "from [92.243.14.124] (localhost [IPv6:::1])\n\tby dpdk.org (Postfix) with ESMTP id DD62CBDC2;\n\tThu, 28 Jan 2016 06:47:16 +0100 (CET)",
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        ],
        "X-ExtLoop1": "1",
        "X-IronPort-AV": "E=Sophos;i=\"5.22,357,1449561600\"; d=\"scan'208\";a=\"37515552\"",
        "From": "Shaopeng He <shaopeng.he@intel.com>",
        "To": "dev@dpdk.org",
        "Date": "Thu, 28 Jan 2016 13:47:03 +0800",
        "Message-Id": "<1453960023-31402-1-git-send-email-shaopeng.he@intel.com>",
        "X-Mailer": "git-send-email 1.7.4.1",
        "Subject": "[dpdk-dev] [PATCH] fm10k: fix switch manager high CPU usage",
        "X-BeenThere": "dev@dpdk.org",
        "X-Mailman-Version": "2.1.15",
        "Precedence": "list",
        "List-Id": "patches and discussions about DPDK <dev.dpdk.org>",
        "List-Unsubscribe": "<http://dpdk.org/ml/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>",
        "List-Archive": "<http://dpdk.org/ml/archives/dev/>",
        "List-Post": "<mailto:dev@dpdk.org>",
        "List-Help": "<mailto:dev-request@dpdk.org?subject=help>",
        "List-Subscribe": "<http://dpdk.org/ml/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>",
        "Errors-To": "dev-bounces@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "fm10k switch core uses source MAC + VID + SGLORT to do\nlook up in MAC table. If no match, an exception interrupt\nwill be sent to the switch manager, and cause high CPU\nusage.\nThis patch fixes this issue. A default SGLORT is assigned\nto each TX queue. This default value works for non-VMDq mode\nand current VMDq example. For advanced VMDq usage, e.g.\ndifferent source MAC address for different TX queue, FTAG\nforwarding function could be used to change this default\nSGLORT value.\n\nSigned-off-by: Shaopeng He <shaopeng.he@intel.com>\n---\n drivers/net/fm10k/fm10k_ethdev.c | 3 +++\n 1 file changed, 3 insertions(+)",
    "diff": "diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c\nindex e4aed94..f6eb05d 100644\n--- a/drivers/net/fm10k/fm10k_ethdev.c\n+++ b/drivers/net/fm10k/fm10k_ethdev.c\n@@ -675,6 +675,9 @@ fm10k_dev_tx_init(struct rte_eth_dev *dev)\n \t\tFM10K_WRITE_REG(hw, FM10K_TDBAH(i),\n \t\t\t\tbase_addr >> (CHAR_BIT * sizeof(uint32_t)));\n \t\tFM10K_WRITE_REG(hw, FM10K_TDLEN(i), size);\n+\n+\t\t/* assign default SGLORT for each TX queue */\n+\t\tFM10K_WRITE_REG(hw, FM10K_TX_SGLORT(i), hw->mac.dglort_map);\n \t}\n \n \t/* set up vector or scalar TX function as appropriate */\n",
    "prefixes": [
        "dpdk-dev"
    ]
}