--- zzzz-none-000/linux-4.4.271/include/net/sock.h	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/include/net/sock.h	2023-04-19 10:22:30.000000000 +0000
@@ -241,6 +241,9 @@
 		u32		skc_tw_snd_nxt; /* struct tcp_timewait_sock */
 	};
 	/* public: */
+#ifdef CONFIG_AVM_SK_TC_INDEX
+		unsigned long           skc_tc_index;
+#endif
 };
 
 struct cg_proto;
@@ -356,6 +359,10 @@
 #define sk_flags		__sk_common.skc_flags
 #define sk_rxhash		__sk_common.skc_rxhash
 
+#ifdef CONFIG_AVM_SK_TC_INDEX
+#define sk_tc_index            __sk_common.skc_tc_index
+#endif
+
 	socket_lock_t		sk_lock;
 	struct sk_buff_head	sk_receive_queue;
 	/*
@@ -429,6 +436,7 @@
 #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO)
 	__u32			sk_cgrp_prioidx;
 #endif
+	kuid_t			sk_uid;
 	struct pid		*sk_peer_pid;
 	const struct cred	*sk_peer_cred;
 	long			sk_rcvtimeo;
@@ -1712,6 +1720,7 @@
 	sk->sk_wq = parent->wq;
 	parent->sk = sk;
 	sk_set_socket(sk, parent);
+	sk->sk_uid = SOCK_INODE(parent)->i_uid;
 	security_sock_graft(sk, parent);
 	write_unlock_bh(&sk->sk_callback_lock);
 }
@@ -1719,6 +1728,11 @@
 kuid_t sock_i_uid(struct sock *sk);
 unsigned long sock_i_ino(struct sock *sk);
 
+static inline kuid_t sock_net_uid(const struct net *net, const struct sock *sk)
+{
+	return sk ? sk->sk_uid : make_kuid(net->user_ns, 0);
+}
+
 static inline u32 net_tx_rndhash(void)
 {
 	u32 v = prandom_u32();