--- zzzz-none-000/linux-4.9.279/net/netfilter/nf_conntrack_netlink.c	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/net/netfilter/nf_conntrack_netlink.c	2023-02-08 11:43:43.000000000 +0000
@@ -14,6 +14,10 @@
  * This software may be used and distributed according to the terms
  * of the GNU General Public License, incorporated herein by reference.
  */
+/*
+ * Includes Intel Corporation's changes/modifications dated: 2018.
+ * Changed/modified portions - Copyright (c) 2018, Intel Corporation.
+ */
 
 #include <linux/init.h>
 #include <linux/module.h>
@@ -57,6 +61,10 @@
 #include <linux/netfilter/nfnetlink.h>
 #include <linux/netfilter/nfnetlink_conntrack.h>
 
+#ifdef CONFIG_INTEL_KERNEL_PP_DRIVER_LOCAL
+#include <linux/ti_hil.h>
+#endif /* CONFIG_INTEL_KERNEL_PP_DRIVER_LOCAL */
+
 MODULE_LICENSE("GPL");
 
 static char __initdata version[] = "0.93";
@@ -1124,9 +1132,17 @@
 		if (IS_ERR(filter))
 			return PTR_ERR(filter);
 	}
-
+#ifdef CONFIG_INTEL_KERNEL_PP_DRIVER_LOCAL
+	/* For PP on ATOM, all active PP sessions to be deleted and disable PP to
+	 * avoid any new session creation when connection tracking entry is getting
+	 * flushed. This change is specific to PP on ATOM configuration only. */
+	ti_hil_pp_event (NETFILTER_CT_FLUSH_START, (void *)NULL);
+#endif
 	nf_ct_iterate_cleanup(net, ctnetlink_filter_match, filter,
 			      portid, report);
+#ifdef CONFIG_INTEL_KERNEL_PP_DRIVER_LOCAL
+	ti_hil_pp_event (NETFILTER_CT_FLUSH_END, (void *)NULL);
+#endif
 	kfree(filter);
 
 	return 0;
@@ -1254,7 +1270,8 @@
 	if (err <= 0)
 		goto free;
 
-	err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT);
+	err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid,
+					MSG_DONTWAIT, 0);
 	if (err < 0)
 		goto out;
 
@@ -2111,7 +2128,8 @@
 	if (err <= 0)
 		goto free;
 
-	err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT);
+	err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid,
+					MSG_DONTWAIT, 0);
 	if (err < 0)
 		goto out;
 
@@ -2865,7 +2883,8 @@
 	if (err <= 0)
 		goto free;
 
-	err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid, MSG_DONTWAIT);
+	err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).portid,
+					MSG_DONTWAIT, 0);
 	if (err < 0)
 		goto out;