tcp: Remove osk from __inet_hash() arg.

__inet_hash() is called from inet_hash() and inet6_hash with osk NULL.

Let's remove the 2nd arg from __inet_hash().

Signed-off-by: Kuniyuki Iwashima <[e-mail]>
Reviewed-by: Eric Dumazet <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

include/net/inet_hashtables.h

···
 bool inet_ehash_insert(struct sock *sk, struct sock *osk, bool *found_dup_sk);
 bool inet_ehash_nolisten(struct sock *sk, struct sock *osk,
 			 bool *found_dup_sk);
-int __inet_hash(struct sock *sk, struct sock *osk);
+int __inet_hash(struct sock *sk);
 int inet_hash(struct sock *sk);
 void inet_unhash(struct sock *sk);
 

net/ipv4/inet_hashtables.c

···
 	return reuseport_alloc(sk, inet_rcv_saddr_any(sk));
 }
 
-int __inet_hash(struct sock *sk, struct sock *osk)
+int __inet_hash(struct sock *sk)
 {
 	struct inet_hashinfo *hashinfo = tcp_get_hashinfo(sk);
 	struct inet_listen_hashbucket *ilb2;
···
 
 	if (sk->sk_state != TCP_LISTEN) {
 		local_bh_disable();
-		inet_ehash_nolisten(sk, osk, NULL);
+		inet_ehash_nolisten(sk, NULL, NULL);
 		local_bh_enable();
 		return 0;
 	}
···
 	int err = 0;
 
 	if (sk->sk_state != TCP_CLOSE)
-		err = __inet_hash(sk, NULL);
+		err = __inet_hash(sk);
 
 	return err;
 }

net/ipv6/inet6_hashtables.c

···
 	int err = 0;
 
 	if (sk->sk_state != TCP_CLOSE)
-		err = __inet_hash(sk, NULL);
+		err = __inet_hash(sk);
 
 	return err;
 }