defrag: add defrag memcap stats counter

Task OISF#5816
jufajardini · Mar 30, 2023 · b2b3306 · b2b3306
1 parent 5e1dad7
commit b2b3306
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Showing 4 changed files with 8 additions and 0 deletions.
diff --git a/etc/schema.json b/etc/schema.json
@@ -4747,6 +4747,9 @@
                         "max_frag_hits": {
                             "type": "integer"
                         },
+                        "memcap_exception_policy": {
+                            "type": "integer"
+                        },
                         "ipv4": {
                             "type": "object",
                             "properties": {

diff --git a/src/decode.c b/src/decode.c
@@ -593,6 +593,8 @@ void DecodeRegisterPerfCounters(DecodeThreadVars *dtv, ThreadVars *tv)
     dtv->counter_defrag_ipv6_reassembled = StatsRegisterCounter("defrag.ipv6.reassembled", tv);
     dtv->counter_defrag_max_hit =
         StatsRegisterCounter("defrag.max_frag_hits", tv);
+    dtv->counter_defrag_memcap_exc_policy =
+            StatsRegisterCounter("defrag.memcap_exception_policy", tv);
 
     for (int i = 0; i < DECODE_EVENT_MAX; i++) {
         BUG_ON(i != (int)DEvents[i].code);

diff --git a/src/decode.h b/src/decode.h
@@ -713,6 +713,7 @@ typedef struct DecodeThreadVars_
     uint16_t counter_defrag_ipv6_fragments;
     uint16_t counter_defrag_ipv6_reassembled;
     uint16_t counter_defrag_max_hit;
+    uint16_t counter_defrag_memcap_exc_policy;
 
     uint16_t counter_flow_memcap;
     uint16_t counter_flow_memcap_exc_policy;

diff --git a/src/defrag.c b/src/defrag.c
@@ -1043,6 +1043,8 @@ Defrag(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p)
     tracker = DefragGetTracker(tv, dtv, p);
     if (tracker == NULL) {
         StatsIncr(tv, dtv->counter_defrag_max_hit);
+        /* currently, whenever tracker is NULL, ExceptionPolicyApply has been called */
+        StatsIncr(tv, dtv->counter_defrag_memcap_exc_policy);
         return NULL;
     }