Clarify CAK counters (#937)

Resolves #683

release/models/macsec/openconfig-macsec.yang

@@ -18,12 +18,18 @@ module openconfig-macsec {
     "This module defines configuration and state data for
      MACsec IEEE Std 802.1AE-2018.";
 
-  oc-ext:openconfig-version "1.1.0";
+  oc-ext:openconfig-version "1.1.1";
   oc-ext:regexp-posix;
   oc-ext:catalog-organization "openconfig";
   oc-ext:origin "openconfig";
 
-  revision "2023-06-08" {
+  revision "2023-08-03" {
+    description
+      "Clarify in-cak and out-cak leaf descriptions.";
+    reference "1.1.1";
+  }
+
+revision "2023-06-08" {
     description
       "Support rx-late-pkts leaf.";
     reference "1.1.0";
@@ -190,7 +196,9 @@ module openconfig-macsec {
     leaf in-cak-mkpdu {
       type oc-yang:counter64;
       description
-        "Validated MKPDU received CAK count";
+        "Count of validated MKPDU  connectivity association key (CAK) pdus
+        received.  This counter is related to the group-cak feature in the
+        802.1X-2010 standard.";
     }
 
     leaf out-mkpdu {
@@ -208,7 +216,9 @@ module openconfig-macsec {
     leaf out-cak-mkpdu {
       type oc-yang:counter64;
       description
-        "MKPDU CAK sent count";
+        "Count of MKPDU connectivity association key (CAK) pdu's sent.
+        This counter is related to the group-cak feature in the
+        802.1X-2010 standard.";
     }
   }