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GET /api/patches/1276673/?format=api
HTTP 200 OK
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{
    "id": 1276673,
    "url": "http://patchwork.ozlabs.org/api/patches/1276673/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20200424201623.10971-17-andre.guedes@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",
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        "scm_url": "",
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    "msgid": "<20200424201623.10971-17-andre.guedes@intel.com>",
    "list_archive_url": null,
    "date": "2020-04-24T20:16:20",
    "name": "[16/19] igc: Fix NFC rule validation",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": false,
    "hash": "9351abe0e8666f38eb3eb4fdc0254ca6781a50e7",
    "submitter": {
        "id": 72323,
        "url": "http://patchwork.ozlabs.org/api/people/72323/?format=api",
        "name": "Andre Guedes",
        "email": "andre.guedes@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/20200424201623.10971-17-andre.guedes@intel.com/mbox/",
    "series": [
        {
            "id": 172579,
            "url": "http://patchwork.ozlabs.org/api/series/172579/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/list/?series=172579",
            "date": "2020-04-24T20:16:07",
            "name": "igc: Fixes to NFC support code",
            "version": 1,
            "mbox": "http://patchwork.ozlabs.org/series/172579/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/1276673/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/1276673/checks/",
    "tags": {},
    "related": [],
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            "from orsmga001.jf.intel.com ([10.7.209.18])\n by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384;\n 24 Apr 2020 13:17:29 -0700",
            "from kleandre-mobl.amr.corp.intel.com ([10.213.164.39])\n by orsmga001.jf.intel.com with ESMTP; 24 Apr 2020 13:17:28 -0700"
        ],
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        "From": "Andre Guedes <andre.guedes@intel.com>",
        "To": "intel-wired-lan@lists.osuosl.org",
        "Date": "Fri, 24 Apr 2020 13:16:20 -0700",
        "Message-Id": "<20200424201623.10971-17-andre.guedes@intel.com>",
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        "In-Reply-To": "<20200424201623.10971-1-andre.guedes@intel.com>",
        "References": "<20200424201623.10971-1-andre.guedes@intel.com>",
        "MIME-Version": "1.0",
        "Subject": "[Intel-wired-lan] [PATCH 16/19] igc: Fix NFC rule validation",
        "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 <intel-wired-lan.osuosl.org>",
        "List-Unsubscribe": "<https://lists.osuosl.org/mailman/options/intel-wired-lan>,\n <mailto:intel-wired-lan-request@osuosl.org?subject=unsubscribe>",
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        "Sender": "\"Intel-wired-lan\" <intel-wired-lan-bounces@osuosl.org>"
    },
    "content": "If we try to overwrite an existing rule with the same filter but\ndifferent action, we get EEXIST error as shown below.\n\n$ ethtool -N eth0 flow-type ether dst <MACADDR> action 1 loc 10\n$ ethtool -N eth0 flow-type ether dst <MACADDR> action 2 loc 10\nrmgr: Cannot insert RX class rule: File exists\n\nThe second command is expected to overwrite the previous rule in location\n10 and succeed.\n\nThis patch fixes igc_ethtool_check_nfc_rule() so it also checks the\nrules location. In case they match, the rule under evaluation should not\nbe considered invalid.\n\nSigned-off-by: Andre Guedes <andre.guedes@intel.com>\n---\n drivers/net/ethernet/intel/igc/igc_ethtool.c | 7 ++++---\n 1 file changed, 4 insertions(+), 3 deletions(-)",
    "diff": "diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c b/drivers/net/ethernet/intel/igc/igc_ethtool.c\nindex de9ab3c8179a..32bc77af71dd 100644\n--- a/drivers/net/ethernet/intel/igc/igc_ethtool.c\n+++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c\n@@ -1225,8 +1225,8 @@ static void igc_ethtool_init_nfc_rule(struct igc_nfc_rule *rule,\n  * Rules with both destination and source MAC addresses are considered invalid\n  * since the driver doesn't support them.\n  *\n- * Also, if there is already another rule with the same filter, @rule is\n- * considered invalid.\n+ * Also, if there is already another rule with the same filter in a different\n+ * location, @rule is considered invalid.\n  *\n  * Context: Expects adapter->nfc_rule_lock to be held by caller.\n  *\n@@ -1252,7 +1252,8 @@ static int igc_ethtool_check_nfc_rule(struct igc_adapter *adapter,\n \n \tlist_for_each_entry(tmp, &adapter->nfc_rule_list, list) {\n \t\tif (!memcmp(&rule->filter, &tmp->filter,\n-\t\t\t    sizeof(rule->filter))) {\n+\t\t\t    sizeof(rule->filter)) &&\n+\t\t    tmp->location != rule->location) {\n \t\t\tnetdev_dbg(dev, \"Rule already exists\");\n \t\t\treturn -EEXIST;\n \t\t}\n",
    "prefixes": [
        "16/19"
    ]
}