--- zzzz-none-000/linux-4.4.271/net/ipv4/udp.c	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/net/ipv4/udp.c	2023-04-19 10:22:30.000000000 +0000
@@ -114,6 +114,8 @@
 #include <net/busy_poll.h>
 #include "udp_impl.h"
 
+#include <avm/pa/avm_pa.h>
+
 struct udp_table udp_table __read_mostly;
 EXPORT_SYMBOL(udp_table);
 
@@ -580,8 +582,8 @@
 	const struct iphdr *iph = ip_hdr(skb);
 
 	return __udp4_lib_lookup(dev_net(skb_dst(skb)->dev), iph->saddr, sport,
-				 iph->daddr, dport, inet_iif(skb),
-				 udptable);
+			       iph->daddr, dport, inet_iif(skb),
+			       udptable);
 }
 
 struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,
@@ -1027,7 +1029,8 @@
 		flowi4_init_output(fl4, ipc.oif, sk->sk_mark, tos,
 				   RT_SCOPE_UNIVERSE, sk->sk_protocol,
 				   flow_flags,
-				   faddr, saddr, dport, inet->inet_sport);
+				   faddr, saddr, dport, inet->inet_sport,
+				   sk->sk_uid);
 
 		if (!saddr && ipc.oif) {
 			err = l3mdev_get_saddr(net, ipc.oif, fl4);
@@ -1510,6 +1513,7 @@
 int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 {
 	struct udp_sock *up = udp_sk(sk);
+	struct net *net = dev_net(skb->dev);
 	int rc;
 	int is_udplite = IS_UDPLITE(sk);
 
@@ -1518,6 +1522,9 @@
 	 */
 	if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
 		goto drop;
+
+	avm_pa_add_local_session(AVM_PA_NET_IP_DEVINFO(net), skb, sk);
+
 	nf_reset(skb);
 
 	if (static_key_false(&udp_encap_needed) && up->encap_type) {