statd: extend mount-points + advertised pmds per interface

- Include /run and /tmp in mount-points, likely more interesting than /.
- Include advertised link modes in operational to compare with supported

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/statd/python/yanger/ietf_interfaces/ethernet.py

@@ -203,10 +203,11 @@ def link(ifname):
     if supported:
         eth["infix-ethernet-interface:supported-pmd-types"] = supported
 
-    # Suppress when advertised == supported — that's the default
-    # "advertise everything" state with no diagnostic value.
+    # Always emit when the PHY is advertising something — even when it equals
+    # the full supported set, displaying the list alongside supported is
+    # useful for "show interfaces detail" and the WebUI ethernet card.
     advertised = _ethtool_modes_to_pmd_identities(data.get("advertised-link-modes"))
-    if advertised and set(advertised) != set(supported):
+    if advertised:
         eth["auto-negotiation"]["infix-ethernet-interface:advertised-pmd-types"] = advertised
 
     speed_bps = None

src/statd/python/yanger/ietf_system.py

@@ -422,9 +422,14 @@ def add_resource_usage(out):
     except (FileNotFoundError, ValueError):
         pass
 
-    # Filesystem usage
+    # Filesystem usage.  /run and /tmp are tmpfs (RAM-backed) and easily the
+    # scarcest writable storage on small embedded boards — surface them so
+    # operators can tell when the box is about to start dropping logs or
+    # failing to spool config diffs.  / is the read-only rootfs (squashfs);
+    # always 100 % used by design but kept in the list so a flag/limit
+    # consumer can recognise it.
     filesystems = []
-    for mount in ["/", "/var", "/cfg"]:
+    for mount in ["/", "/var", "/cfg", "/run", "/tmp"]:
         try:
             result = HOST.run_multiline(["df", "-k", mount], [])
             if len(result) > 1:

test/case/statd/system/ietf-system.json

@@ -416,6 +416,18 @@
           "size": "14073",
           "used": "67",
           "available": "12860"
+        },
+        {
+          "mount-point": "/run",
+          "size": "51200",
+          "used": "128",
+          "available": "51072"
+        },
+        {
+          "mount-point": "/tmp",
+          "size": "102400",
+          "used": "240",
+          "available": "102160"
         }
       ]
     }

test/case/statd/system/operational.json

@@ -111,6 +111,18 @@
           "mount-point": "/cfg",
           "size": "14073",
           "used": "67"
+        },
+        {
+          "available": "51072",
+          "mount-point": "/run",
+          "size": "51200",
+          "used": "128"
+        },
+        {
+          "available": "102160",
+          "mount-point": "/tmp",
+          "size": "102400",
+          "used": "240"
         }
       ],
       "load-average": {

test/case/statd/system/system/run/df_-k_+run

@@ -0,0 +1,2 @@
+Filesystem           1K-blocks      Used Available Use% Mounted on
+tmpfs                    51200       128     51072   1% /run

test/case/statd/system/system/run/df_-k_+tmp

@@ -0,0 +1,2 @@
+Filesystem           1K-blocks      Used Available Use% Mounted on
+tmpfs                   102400       240    102160   1% /tmp