--- zzzz-none-000/linux-4.9.218/net/ipv6/tcp_ipv6.c	2020-04-02 15:20:41.000000000 +0000
+++ seale-7590ax-750/linux-4.9.218/net/ipv6/tcp_ipv6.c	2023-03-29 10:59:08.000000000 +0000
@@ -69,6 +69,8 @@
 #include <crypto/hash.h>
 #include <linux/scatterlist.h>
 
+#include <avm/pa/avm_pa.h>
+
 static void	tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb);
 static void	tcp_v6_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb,
 				      struct request_sock *req);
@@ -238,6 +240,7 @@
 	fl6.flowi6_mark = sk->sk_mark;
 	fl6.fl6_dport = usin->sin6_port;
 	fl6.fl6_sport = inet->inet_sport;
+	fl6.flowi6_uid = sk->sk_uid;
 
 	opt = rcu_dereference_protected(np->opt, lockdep_sock_is_held(sk));
 	final_p = fl6_update_dst(&fl6, opt, &final);
@@ -404,7 +407,7 @@
 		if (!sock_owned_by_user(sk))
 			tcp_v6_mtu_reduced(sk);
 		else if (!test_and_set_bit(TCP_MTU_REDUCED_DEFERRED,
-					   &tp->tsq_flags))
+					   &sk->sk_tsq_flags))
 			sock_hold(sk);
 		goto out;
 	}
@@ -835,6 +838,7 @@
 	fl6.flowi6_mark = IP6_REPLY_MARK(net, skb->mark);
 	fl6.fl6_dport = t1->dest;
 	fl6.fl6_sport = t1->source;
+	fl6.flowi6_uid = sock_net_uid(net, sk && sk_fullsock(sk) ? sk : NULL);
 	security_skb_classify_flow(skb, flowi6_to_flowi(&fl6));
 
 	/* Pass a socket to ip6_dst_lookup either it is for RST
@@ -1419,6 +1423,8 @@
 		goto no_tcp_socket;
 
 process:
+	avm_pa_add_local_session(AVM_PA_NET_IP6_DEVINFO(net), skb, sk);
+
 	if (sk->sk_state == TCP_TIME_WAIT)
 		goto do_time_wait;
 
@@ -1427,7 +1433,6 @@
 		struct sock *nsk;
 
 		sk = req->rsk_listener;
-		tcp_v6_fill_cb(skb, hdr, th);
 		if (tcp_v6_inbound_md5_hash(sk, skb)) {
 			sk_drops_add(sk, skb);
 			reqsk_put(req);
@@ -1443,6 +1448,9 @@
 		}
 		sock_hold(sk);
 		refcounted = true;
+		th = (const struct tcphdr *)skb->data;
+		hdr = ipv6_hdr(skb);
+		tcp_v6_fill_cb(skb, hdr, th);
 		nsk = tcp_check_req(sk, skb, req, false);
 		if (!nsk) {
 			reqsk_put(req);
@@ -1467,8 +1475,6 @@
 	if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
 		goto discard_and_relse;
 
-	tcp_v6_fill_cb(skb, hdr, th);
-
 	if (tcp_v6_inbound_md5_hash(sk, skb))
 		goto discard_and_relse;
 
@@ -1476,6 +1482,7 @@
 		goto discard_and_relse;
 	th = (const struct tcphdr *)skb->data;
 	hdr = ipv6_hdr(skb);
+	tcp_v6_fill_cb(skb, hdr, th);
 
 	skb->dev = NULL;