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GET /api/1.1/patches/2226533/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
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{
    "id": 2226533,
    "url": "http://patchwork.ozlabs.org/api/1.1/patches/2226533/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/openvswitch/patch/20260422145231.1537664-2-david.marchand@redhat.com/",
    "project": {
        "id": 47,
        "url": "http://patchwork.ozlabs.org/api/1.1/projects/47/?format=api",
        "name": "Open vSwitch",
        "link_name": "openvswitch",
        "list_id": "ovs-dev.openvswitch.org",
        "list_email": "ovs-dev@openvswitch.org",
        "web_url": "http://openvswitch.org/",
        "scm_url": "git@github.com:openvswitch/ovs.git",
        "webscm_url": "https://github.com/openvswitch/ovs"
    },
    "msgid": "<20260422145231.1537664-2-david.marchand@redhat.com>",
    "date": "2026-04-22T14:52:30",
    "name": "[ovs-dev,v2,1/2] netdev-dpdk: Enhance logging for port hotplug.",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "375e26e050714858adf989370c4e37bb87ac9596",
    "submitter": {
        "id": 75396,
        "url": "http://patchwork.ozlabs.org/api/1.1/people/75396/?format=api",
        "name": "David Marchand",
        "email": "david.marchand@redhat.com"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/openvswitch/patch/20260422145231.1537664-2-david.marchand@redhat.com/mbox/",
    "series": [
        {
            "id": 501027,
            "url": "http://patchwork.ozlabs.org/api/1.1/series/501027/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/openvswitch/list/?series=501027",
            "date": "2026-04-22T14:52:29",
            "name": "Disable initial device probe in DPDK.",
            "version": 2,
            "mbox": "http://patchwork.ozlabs.org/series/501027/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/2226533/comments/",
    "check": "warning",
    "checks": "http://patchwork.ozlabs.org/api/patches/2226533/checks/",
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        "To": "dev@openvswitch.org",
        "Date": "Wed, 22 Apr 2026 16:52:30 +0200",
        "Message-ID": "<20260422145231.1537664-2-david.marchand@redhat.com>",
        "In-Reply-To": "<20260422145231.1537664-1-david.marchand@redhat.com>",
        "References": "<20260422145231.1537664-1-david.marchand@redhat.com>",
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        "X-Mimecast-Originator": "redhat.com",
        "Subject": "[ovs-dev] [PATCH v2 1/2] netdev-dpdk: Enhance logging for port\n hotplug.",
        "X-BeenThere": "ovs-dev@openvswitch.org",
        "X-Mailman-Version": "2.1.30",
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        "List-Id": "<ovs-dev.openvswitch.org>",
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        "From": "David Marchand via dev <ovs-dev@openvswitch.org>",
        "Reply-To": "David Marchand <david.marchand@redhat.com>",
        "Cc": "elibr@nvidia.com",
        "Content-Type": "text/plain; charset=\"us-ascii\"",
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        "Errors-To": "ovs-dev-bounces@openvswitch.org",
        "Sender": "\"dev\" <ovs-dev-bounces@openvswitch.org>"
    },
    "content": "Currently, if one incorrect mac is set, a first log with little context\nis displayed, followed by a more complete one.\n\nBesides, if no port can be identified with the passed mac, then no\nexplanation is displayed.\n\nReport some details in a single log.\n\nBefore:\nnetdev_dpdk|ERR|invalid mac: 00:00:00:00:00:\nnetdev_dpdk|WARN|Error attaching device 'class=eth,mac=00:00:00:00:00:'\n\tto DPDK\n...\nnetdev_dpdk|WARN|Error attaching device 'class=eth,mac=00:00:00:00:00:00'\n\tto DPDK\n\nAfter:\nnetdev_dpdk|WARN|Error attaching device 'class=eth,mac=00:00:00:00:00:':\n\tinvalid mac\n...\nnetdev_dpdk|WARN|Error attaching device 'class=eth,mac=00:00:00:00:00:00':\n\tunknown mac\n\nAcked-by: Eli Britstein <elibr@nvidia.com>\nAcked-by: Eelco Chaudron <echaudro@redhat.com>\nSigned-off-by: David Marchand <david.marchand@redhat.com>\n---\nChanges since v1:\n- avoided allocating memory for error strings,\n\nChanges since RFC v1:\n- removed redundant \"to DPDK\" in netdev-dpdk log messages,\n\n---\n lib/netdev-dpdk.c | 22 ++++++++++++++++------\n 1 file changed, 16 insertions(+), 6 deletions(-)",
    "diff": "diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c\nindex 90d4c2c71e..7629d0f974 100644\n--- a/lib/netdev-dpdk.c\n+++ b/lib/netdev-dpdk.c\n@@ -2030,13 +2030,15 @@ netdev_dpdk_lookup_by_port_id(dpdk_port_t port_id)\n }\n \n static dpdk_port_t\n-netdev_dpdk_get_port_by_mac(const char *mac_str)\n+netdev_dpdk_get_port_by_mac(const char *mac_str, char const **extra_err)\n {\n     dpdk_port_t port_id;\n     struct eth_addr mac, port_mac;\n \n+    *extra_err = NULL;\n+\n     if (!eth_addr_from_string(mac_str, &mac)) {\n-        VLOG_ERR(\"invalid mac: %s\", mac_str);\n+        *extra_err = \"invalid mac\";\n         return DPDK_ETH_PORT_ID_INVALID;\n     }\n \n@@ -2050,6 +2052,7 @@ netdev_dpdk_get_port_by_mac(const char *mac_str)\n         }\n     }\n \n+    *extra_err = \"unknown mac\";\n     return DPDK_ETH_PORT_ID_INVALID;\n }\n \n@@ -2086,31 +2089,38 @@ netdev_dpdk_process_devargs(struct netdev_dpdk *dev,\n     OVS_REQUIRES(dpdk_mutex)\n {\n     dpdk_port_t new_port_id;\n+    char const *extra_err = NULL;\n \n     if (strncmp(devargs, \"class=eth,mac=\", 14) == 0) {\n-        new_port_id = netdev_dpdk_get_port_by_mac(&devargs[14]);\n+        new_port_id = netdev_dpdk_get_port_by_mac(&devargs[14], &extra_err);\n     } else {\n         new_port_id = netdev_dpdk_get_port_by_devargs(devargs);\n         if (!rte_eth_dev_is_valid_port(new_port_id)) {\n+            int ret;\n+\n             /* Device not found in DPDK, attempt to attach it */\n-            if (rte_dev_probe(devargs)) {\n+            ret = rte_dev_probe(devargs);\n+            if (ret < 0) {\n                 new_port_id = DPDK_ETH_PORT_ID_INVALID;\n+                extra_err = ovs_strerror(-ret);\n             } else {\n                 new_port_id = netdev_dpdk_get_port_by_devargs(devargs);\n                 if (rte_eth_dev_is_valid_port(new_port_id)) {\n                     /* Attach successful */\n                     dev->attached = true;\n-                    VLOG_INFO(\"Device '%s' attached to DPDK\", devargs);\n+                    VLOG_INFO(\"Device '%s' attached\", devargs);\n                 } else {\n                     /* Attach unsuccessful */\n                     new_port_id = DPDK_ETH_PORT_ID_INVALID;\n+                    extra_err = \"port unknown\";\n                 }\n             }\n         }\n     }\n \n     if (new_port_id == DPDK_ETH_PORT_ID_INVALID) {\n-        VLOG_WARN_BUF(errp, \"Error attaching device '%s' to DPDK\", devargs);\n+        VLOG_WARN_BUF(errp, \"Error attaching device '%s': %s\", devargs,\n+                      extra_err ? extra_err : \"unknown error\");\n     }\n \n     return new_port_id;\n",
    "prefixes": [
        "ovs-dev",
        "v2",
        "1/2"
    ]
}