tcp: Remove another indentation level in tcp_rcv_state_process

case TCP_SYN_RECV: can have another indentation level removed
by converting

	if (acceptable) {
		...;
	} else {
		return 1;
	}

to
	if (!acceptable)
		return 1;
	...;

Reflow code and comments to fit 80 columns.

Another pure cleanup patch.
Signed-off-by: Joe Perches <joe@perches.com>
Improved-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/tcp_input.c

@@ -5612,9 +5612,11 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 
 	switch (sk->sk_state) {
 	case TCP_SYN_RECV:
-		if (acceptable) {
-			/* Once we leave TCP_SYN_RECV, we no longer
-			 * need req so release it.
+		if (!acceptable)
+			return 1;
+
+		/* Once we leave TCP_SYN_RECV, we no longer need req
+		 * so release it.
 		 */
 		if (req) {
 			tcp_synack_rtt_meas(sk, req);
@@ -5622,9 +5624,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 
 			reqsk_fastopen_remove(sk, req, false);
 		} else {
-				/* Make sure socket is routed, for
-				 * correct metrics.
-				 */
+			/* Make sure socket is routed, for correct metrics. */
 			icsk->icsk_af_ops->rebuild_header(sk);
 			tcp_init_congestion_control(sk);
 
@@ -5636,46 +5636,38 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 		tcp_set_state(sk, TCP_ESTABLISHED);
 		sk->sk_state_change(sk);
 
-			/* Note, that this wakeup is only for marginal
-			 * crossed SYN case. Passively open sockets
-			 * are not waked up, because sk->sk_sleep ==
-			 * NULL and sk->sk_socket == NULL.
+		/* Note, that this wakeup is only for marginal crossed SYN case.
+		 * Passively open sockets are not waked up, because
+		 * sk->sk_sleep == NULL and sk->sk_socket == NULL.
 		 */
 		if (sk->sk_socket)
 			sk_wake_async(sk, SOCK_WAKE_IO, POLL_OUT);
 
 		tp->snd_una = TCP_SKB_CB(skb)->ack_seq;
-			tp->snd_wnd = ntohs(th->window) <<
-					tp->rx_opt.snd_wscale;
+		tp->snd_wnd = ntohs(th->window) << tp->rx_opt.snd_wscale;
 		tcp_init_wl(tp, TCP_SKB_CB(skb)->seq);
 
 		if (tp->rx_opt.tstamp_ok)
 			tp->advmss -= TCPOLEN_TSTAMP_ALIGNED;
 
 		if (req) {
-				/* Re-arm the timer because data may
-				 * have been sent out. This is similar
-				 * to the regular data transmission case
+			/* Re-arm the timer because data may have been sent out.
+			 * This is similar to the regular data transmission case
 			 * when new data has just been ack'ed.
 			 *
-				 * (TFO) - we could try to be more aggressive
-				 * and retransmitting any data sooner based
-				 * on when they are sent out.
+			 * (TFO) - we could try to be more aggressive and
+			 * retransmitting any data sooner based on when they
+			 * are sent out.
 			 */
 			tcp_rearm_rto(sk);
 		} else
 			tcp_init_metrics(sk);
 
-			/* Prevent spurious tcp_cwnd_restart() on
-			 * first data packet.
-			 */
+		/* Prevent spurious tcp_cwnd_restart() on first data packet */
 		tp->lsndtime = tcp_time_stamp;
 
 		tcp_initialize_rcv_mss(sk);
 		tcp_fast_path_on(tp);
-		} else {
-			return 1;
-		}
 		break;
 
 	case TCP_FIN_WAIT1: