Got cmm working

patches/ask/cmm/0003-cmm-ignore-non-fastpath-conntracks.patch

@@ -0,0 +1,74 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: monok8s authors <monok8s@localhost>
+Date: Mon, 11 May 2026 00:00:00 +0000
+Subject: [PATCH] cmm: ignore conntracks without fastpath metadata
+
+CMM receives conntrack notifications for the whole system conntrack table.
+On a Kubernetes node, many entries are unrelated to Comcerto/NXP fastpath:
+loopback traffic, local control-plane traffic, Cilium traffic, broadcast,
+multicast, and ordinary slow-path flows.
+
+Those entries do not necessarily carry the private fastpath attributes CMM
+expects. Treat them as non-fastpathable instead of trying to process them.
+
+---
+ cmm/src/ffcontrol.c | 31 +++++++++++++++++++++++++++++++
+ 1 file changed, 31 insertions(+)
+
+diff --git a/cmm/src/ffcontrol.c b/cmm/src/ffcontrol.c
+--- a/cmm/src/ffcontrol.c
++++ b/cmm/src/ffcontrol.c
+@@ -75,6 +75,25 @@
+ 	return 1;
+ }
+ 
++/*****************************************************************
++* cmmFcHasFastpathAttrs()
++*
++* CMM receives all conntrack notifications, including entries that
++* never passed through the Comcerto/NXP fastpath hooks. Those entries
++* do not have the private fastpath attributes needed below. Treat them
++* as ordinary slow-path conntracks and ignore them.
++******************************************************************/
++static int cmmFcHasFastpathAttrs(struct nf_conntrack *ct)
++{
++	if (!nfct_attr_is_set(ct, ATTR_ORIG_COMCERTO_FP_IIF))
++		return 0;
++
++	if (!nfct_attr_is_set(ct, ATTR_ORIG_COMCERTO_FP_IFINDEX))
++		return 0;
++
++	return 1;
++}
++
+ /*****************************************************************
+ * cmmIsConntrack4Allowed()
+ *
+@@ -92,6 +111,12 @@
+ 	sAddr = nfct_get_attr_u32(ct, ATTR_ORIG_IPV4_SRC);
+ 	dAddr = nfct_get_attr_u32(ct, ATTR_REPL_IPV4_SRC);
+ 
++	if (!cmmFcHasFastpathAttrs(ct)) {
++		cmm_print(DEBUG_INFO, "%s: conntrack has no fastpath metadata, ignored\n",
++			  __func__);
++		goto refused;
++	}
++
+ 	 /* Multicast connections are not forwarded */
+ 	 if (MULTICAST(dAddr)) {
+ 		cmm_print(DEBUG_WARNING, "%s: conntrack multicast dst:%s:%x src:%s:%x\n", __func__,
+@@ -197,6 +222,12 @@
+ 	Saddr = nfct_get_attr(ct, ATTR_ORIG_IPV6_SRC);
+ 	SaddrReply = nfct_get_attr(ct, ATTR_REPL_IPV6_SRC);
+ 
++	if (!Saddr || !SaddrReply || !cmmFcHasFastpathAttrs(ct)) {
++		cmm_print(DEBUG_INFO, "%s: conntrack has no fastpath metadata, ignored\n",
++			  __func__);
++		goto refused;
++	}
++
+ 	if ((SaddrReply[0] & ntohl(0xff000000)) == ntohl(0xff000000))
+ 	{
+ 		goto refused;
+-- 
+2.45.0