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GET /api/1.1/patches/2220547/?format=api
HTTP 200 OK
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{
    "id": 2220547,
    "url": "http://patchwork.ozlabs.org/api/1.1/patches/2220547/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/openvswitch/patch/a23f5fc994cc5b454acc5a57225b498d97ec5ac3.1775568640.git.tredaelli@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": "<a23f5fc994cc5b454acc5a57225b498d97ec5ac3.1775568640.git.tredaelli@redhat.com>",
    "date": "2026-04-07T13:34:26",
    "name": "[ovs-dev,v2,1/5] ofproto-dpif: Add JSON output to fdb/stats-show.",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "6b36dfe75d01a5b33e213eab4198202cd0c512aa",
    "submitter": {
        "id": 70949,
        "url": "http://patchwork.ozlabs.org/api/1.1/people/70949/?format=api",
        "name": "Timothy Redaelli",
        "email": "tredaelli@redhat.com"
    },
    "delegate": {
        "id": 75123,
        "url": "http://patchwork.ozlabs.org/api/1.1/users/75123/?format=api",
        "username": "echaudron",
        "first_name": "Eelco",
        "last_name": "Chaudron",
        "email": "echaudro@redhat.com"
    },
    "mbox": "http://patchwork.ozlabs.org/project/openvswitch/patch/a23f5fc994cc5b454acc5a57225b498d97ec5ac3.1775568640.git.tredaelli@redhat.com/mbox/",
    "series": [
        {
            "id": 498985,
            "url": "http://patchwork.ozlabs.org/api/1.1/series/498985/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/openvswitch/list/?series=498985",
            "date": "2026-04-07T13:34:24",
            "name": "Add JSON output to several ovs-appctl commands",
            "version": 2,
            "mbox": "http://patchwork.ozlabs.org/series/498985/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/2220547/comments/",
    "check": "success",
    "checks": "http://patchwork.ozlabs.org/api/patches/2220547/checks/",
    "tags": {},
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        "To": "dev@openvswitch.org",
        "Date": "Tue,  7 Apr 2026 15:34:26 +0200",
        "Message-ID": "\n <a23f5fc994cc5b454acc5a57225b498d97ec5ac3.1775568640.git.tredaelli@redhat.com>",
        "In-Reply-To": "<cover.1775568640.git.tredaelli@redhat.com>",
        "References": "<cover.1775568640.git.tredaelli@redhat.com>",
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        "X-Mimecast-Originator": "redhat.com",
        "Subject": "[ovs-dev] [PATCH v2 1/5] ofproto-dpif: Add JSON output to\n fdb/stats-show.",
        "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": "Timothy Redaelli via dev <ovs-dev@openvswitch.org>",
        "Reply-To": "Timothy Redaelli <tredaelli@redhat.com>",
        "Cc": "i.maximets@ovn.org",
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    },
    "content": "When --format json is passed to ovs-appctl, fdb/stats-show returns a\nJSON object keyed by bridge name.  Each bridge contains two sub-objects:\n\"entries\" (with \"current\", \"maximum\", and \"static\" counts) and \"events\"\n(with \"evicted\", \"expired\", \"learned\", and \"moved\" counters).\n\nThe implementation is split into separate text and JSON helper functions\nto keep the main handler simple.\n\nExample output:\n  {\"br0\": {\"entries\": {\"current\": 17, \"maximum\": 8192, \"static\": 17},\n           \"events\":  {\"evicted\": 0, \"expired\": 0,\n                       \"learned\": 17, \"moved\": 0}}}\n\nReported-at: https://issues.redhat.com/browse/FDP-2444\nSigned-off-by: Timothy Redaelli <tredaelli@redhat.com>\n---\n ofproto/ofproto-dpif.c | 87 ++++++++++++++++++++++++++++++++----------\n tests/ofproto-dpif.at  | 15 ++++++++\n 2 files changed, 81 insertions(+), 21 deletions(-)",
    "diff": "diff --git a/ofproto/ofproto-dpif.c b/ofproto/ofproto-dpif.c\nindex a02afe8ef..af77577b8 100644\n--- a/ofproto/ofproto-dpif.c\n+++ b/ofproto/ofproto-dpif.c\n@@ -6384,11 +6384,67 @@ ofproto_unixctl_fdb_stats_clear(struct unixctl_conn *conn, int argc,\n     unixctl_command_reply(conn, \"statistics successfully cleared\");\n }\n \n+static struct json *\n+ofproto_unixctl_fdb_stats_show_json(const struct ofproto_dpif *ofproto,\n+                                    const char *bridge_name)\n+{\n+    struct json *entries = json_object_create();\n+    struct json *events = json_object_create();\n+    struct json *bridge = json_object_create();\n+    struct json *json = json_object_create();\n+\n+    json_object_put(entries, \"current\",\n+                    json_integer_create(hmap_count(&ofproto->ml->table)));\n+    json_object_put(entries, \"maximum\",\n+                    json_integer_create(ofproto->ml->max_entries));\n+    json_object_put(entries, \"static\",\n+                    json_integer_create(ofproto->ml->static_entries));\n+    json_object_put(bridge, \"entries\", entries);\n+\n+    json_object_put(events, \"evicted\",\n+                    json_integer_create(ofproto->ml->total_evicted));\n+    json_object_put(events, \"expired\",\n+                    json_integer_create(ofproto->ml->total_expired));\n+    json_object_put(events, \"learned\",\n+                    json_integer_create(ofproto->ml->total_learned));\n+    json_object_put(events, \"moved\",\n+                    json_integer_create(ofproto->ml->total_moved));\n+    json_object_put(bridge, \"events\", events);\n+\n+    json_object_put(json, bridge_name, bridge);\n+    return json;\n+}\n+\n+static void\n+ofproto_unixctl_fdb_stats_show_text(const struct ofproto_dpif *ofproto,\n+                                    const char *bridge_name, struct ds *ds)\n+{\n+    ds_put_format(ds, \"Statistics for bridge \\\"%s\\\":\\n\", bridge_name);\n+    ds_put_format(ds, \"  Current/maximum MAC entries in the table: %\"\n+                  PRIuSIZE\"/%\"PRIuSIZE\"\\n\",\n+                  hmap_count(&ofproto->ml->table),\n+                  ofproto->ml->max_entries);\n+    ds_put_format(ds,\n+                  \"  Current static MAC entries in the table : %\"\n+                  PRIuSIZE\"\\n\", ofproto->ml->static_entries);\n+    ds_put_format(ds,\n+                  \"  Total number of learned MAC entries     : %\"\n+                  PRIu64\"\\n\", ofproto->ml->total_learned);\n+    ds_put_format(ds,\n+                  \"  Total number of expired MAC entries     : %\"\n+                  PRIu64\"\\n\", ofproto->ml->total_expired);\n+    ds_put_format(ds,\n+                  \"  Total number of evicted MAC entries     : %\"\n+                  PRIu64\"\\n\", ofproto->ml->total_evicted);\n+    ds_put_format(ds,\n+                  \"  Total number of port moved MAC entries  : %\"\n+                  PRIu64\"\\n\", ofproto->ml->total_moved);\n+}\n+\n static void\n ofproto_unixctl_fdb_stats_show(struct unixctl_conn *conn, int argc OVS_UNUSED,\n                                const char *argv[], void *aux OVS_UNUSED)\n {\n-    struct ds ds = DS_EMPTY_INITIALIZER;\n     const struct ofproto_dpif *ofproto;\n     ofproto = ofproto_dpif_lookup_by_name(argv[1]);\n     if (!ofproto) {\n@@ -6396,28 +6452,17 @@ ofproto_unixctl_fdb_stats_show(struct unixctl_conn *conn, int argc OVS_UNUSED,\n         return;\n     }\n \n-    ds_put_format(&ds, \"Statistics for bridge \\\"%s\\\":\\n\", argv[1]);\n     ovs_rwlock_rdlock(&ofproto->ml->rwlock);\n+    if (unixctl_command_get_output_format(conn) == UNIXCTL_OUTPUT_FMT_JSON) {\n+        struct json *json = ofproto_unixctl_fdb_stats_show_json(ofproto,\n+                                                                argv[1]);\n+        ovs_rwlock_unlock(&ofproto->ml->rwlock);\n+        unixctl_command_reply_json(conn, json);\n+        return;\n+    }\n \n-    ds_put_format(&ds, \"  Current/maximum MAC entries in the table: %\"\n-                  PRIuSIZE\"/%\"PRIuSIZE\"\\n\",\n-                  hmap_count(&ofproto->ml->table), ofproto->ml->max_entries);\n-    ds_put_format(&ds,\n-                  \"  Current static MAC entries in the table : %\"PRIuSIZE\"\\n\",\n-                  ofproto->ml->static_entries);\n-    ds_put_format(&ds,\n-                  \"  Total number of learned MAC entries     : %\"PRIu64\"\\n\",\n-                  ofproto->ml->total_learned);\n-    ds_put_format(&ds,\n-                  \"  Total number of expired MAC entries     : %\"PRIu64\"\\n\",\n-                  ofproto->ml->total_expired);\n-    ds_put_format(&ds,\n-                  \"  Total number of evicted MAC entries     : %\"PRIu64\"\\n\",\n-                  ofproto->ml->total_evicted);\n-    ds_put_format(&ds,\n-                  \"  Total number of port moved MAC entries  : %\"PRIu64\"\\n\",\n-                  ofproto->ml->total_moved);\n-\n+    struct ds ds = DS_EMPTY_INITIALIZER;\n+    ofproto_unixctl_fdb_stats_show_text(ofproto, argv[1], &ds);\n     ovs_rwlock_unlock(&ofproto->ml->rwlock);\n     unixctl_command_reply(conn, ds_cstr(&ds));\n     ds_destroy(&ds);\ndiff --git a/tests/ofproto-dpif.at b/tests/ofproto-dpif.at\nindex 39e43d376..70e28b7d9 100644\n--- a/tests/ofproto-dpif.at\n+++ b/tests/ofproto-dpif.at\n@@ -8248,6 +8248,21 @@ AT_CHECK_UNQUOTED([ovs-appctl fdb/stats-show br0 | grep static], [0], [dnl\n   Current static MAC entries in the table : 17\n ])\n \n+dnl Check JSON output.\n+AT_CHECK([ovs-appctl --format json --pretty fdb/stats-show br0], [0], [dnl\n+{\n+  \"br0\": {\n+    \"entries\": {\n+      \"current\": 17,\n+      \"maximum\": 8192,\n+      \"static\": 17},\n+    \"events\": {\n+      \"evicted\": 0,\n+      \"expired\": 0,\n+      \"learned\": 18,\n+      \"moved\": 0}}}\n+])\n+\n OVS_VSWITCHD_STOP\n AT_CLEANUP\n \n",
    "prefixes": [
        "ovs-dev",
        "v2",
        "1/5"
    ]
}