tcp: remove one indentation level in tcp_create_openreq_child

Signed-off-by: NEric Dumazet <edumazet@google.com>
Acked-by: NYuchung Cheng <ycheng@google.com>
Acked-by: NNeal Cardwell <ncardwell@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/tcp_minisocks.c

@@ -449,119 +449,122 @@ struct sock *tcp_create_openreq_child(const struct sock *sk,
 				      struct sk_buff *skb)
 {
 	struct sock *newsk = inet_csk_clone_lock(sk, req, GFP_ATOMIC);
+	const struct inet_request_sock *ireq = inet_rsk(req);
+	struct tcp_request_sock *treq = tcp_rsk(req);
+	struct inet_connection_sock *newicsk;
+	struct tcp_sock *oldtp, *newtp;
 
-	if (newsk) {
-		const struct inet_request_sock *ireq = inet_rsk(req);
-		struct tcp_request_sock *treq = tcp_rsk(req);
-		struct inet_connection_sock *newicsk = inet_csk(newsk);
-		struct tcp_sock *newtp = tcp_sk(newsk);
-		struct tcp_sock *oldtp = tcp_sk(sk);
-
-		smc_check_reset_syn_req(oldtp, req, newtp);
-
-		/* Now setup tcp_sock */
-		newtp->pred_flags = 0;
-
-		newtp->rcv_wup = newtp->copied_seq =
-		newtp->rcv_nxt = treq->rcv_isn + 1;
-		newtp->segs_in = 1;
-
-		newtp->snd_sml = newtp->snd_una =
-		newtp->snd_nxt = newtp->snd_up = treq->snt_isn + 1;
-
-		INIT_LIST_HEAD(&newtp->tsq_node);
-		INIT_LIST_HEAD(&newtp->tsorted_sent_queue);
-
-		tcp_init_wl(newtp, treq->rcv_isn);
-
-		newtp->srtt_us = 0;
-		newtp->mdev_us = jiffies_to_usecs(TCP_TIMEOUT_INIT);
-		minmax_reset(&newtp->rtt_min, tcp_jiffies32, ~0U);
-		newicsk->icsk_rto = TCP_TIMEOUT_INIT;
-		newicsk->icsk_ack.lrcvtime = tcp_jiffies32;
-
-		newtp->packets_out = 0;
-		newtp->retrans_out = 0;
-		newtp->sacked_out = 0;
-		newtp->snd_ssthresh = TCP_INFINITE_SSTHRESH;
-		newtp->tlp_high_seq = 0;
-		newtp->lsndtime = tcp_jiffies32;
-		newsk->sk_txhash = treq->txhash;
-		newtp->last_oow_ack_time = 0;
-		newtp->total_retrans = req->num_retrans;
-
-		/* So many TCP implementations out there (incorrectly) count the
-		 * initial SYN frame in their delayed-ACK and congestion control
-		 * algorithms that we must have the following bandaid to talk
-		 * efficiently to them.  -DaveM
-		 */
-		newtp->snd_cwnd = TCP_INIT_CWND;
-		newtp->snd_cwnd_cnt = 0;
-
-		/* There's a bubble in the pipe until at least the first ACK. */
-		newtp->app_limited = ~0U;
-
-		tcp_init_xmit_timers(newsk);
-		newtp->write_seq = newtp->pushed_seq = treq->snt_isn + 1;
-
-		newtp->rx_opt.saw_tstamp = 0;
-
-		newtp->rx_opt.dsack = 0;
-		newtp->rx_opt.num_sacks = 0;
-
-		newtp->urg_data = 0;
-
-		if (sock_flag(newsk, SOCK_KEEPOPEN))
-			inet_csk_reset_keepalive_timer(newsk,
-						       keepalive_time_when(newtp));
-
-		newtp->rx_opt.tstamp_ok = ireq->tstamp_ok;
-		newtp->rx_opt.sack_ok = ireq->sack_ok;
-		newtp->window_clamp = req->rsk_window_clamp;
-		newtp->rcv_ssthresh = req->rsk_rcv_wnd;
-		newtp->rcv_wnd = req->rsk_rcv_wnd;
-		newtp->rx_opt.wscale_ok = ireq->wscale_ok;
-		if (newtp->rx_opt.wscale_ok) {
-			newtp->rx_opt.snd_wscale = ireq->snd_wscale;
-			newtp->rx_opt.rcv_wscale = ireq->rcv_wscale;
-		} else {
-			newtp->rx_opt.snd_wscale = newtp->rx_opt.rcv_wscale = 0;
-			newtp->window_clamp = min(newtp->window_clamp, 65535U);
-		}
-		newtp->snd_wnd = (ntohs(tcp_hdr(skb)->window) <<
-				  newtp->rx_opt.snd_wscale);
-		newtp->max_window = newtp->snd_wnd;
-
-		if (newtp->rx_opt.tstamp_ok) {
-			newtp->rx_opt.ts_recent = req->ts_recent;
-			newtp->rx_opt.ts_recent_stamp = get_seconds();
-			newtp->tcp_header_len = sizeof(struct tcphdr) + TCPOLEN_TSTAMP_ALIGNED;
-		} else {
-			newtp->rx_opt.ts_recent_stamp = 0;
-			newtp->tcp_header_len = sizeof(struct tcphdr);
-		}
-		newtp->tsoffset = treq->ts_off;
+	if (!newsk)
+		return NULL;
+
+	newicsk = inet_csk(newsk);
+	newtp = tcp_sk(newsk);
+	oldtp = tcp_sk(sk);
+
+	smc_check_reset_syn_req(oldtp, req, newtp);
+
+	/* Now setup tcp_sock */
+	newtp->pred_flags = 0;
+
+	newtp->rcv_wup = newtp->copied_seq =
+	newtp->rcv_nxt = treq->rcv_isn + 1;
+	newtp->segs_in = 1;
+
+	newtp->snd_sml = newtp->snd_una =
+	newtp->snd_nxt = newtp->snd_up = treq->snt_isn + 1;
+
+	INIT_LIST_HEAD(&newtp->tsq_node);
+	INIT_LIST_HEAD(&newtp->tsorted_sent_queue);
+
+	tcp_init_wl(newtp, treq->rcv_isn);
+
+	newtp->srtt_us = 0;
+	newtp->mdev_us = jiffies_to_usecs(TCP_TIMEOUT_INIT);
+	minmax_reset(&newtp->rtt_min, tcp_jiffies32, ~0U);
+	newicsk->icsk_rto = TCP_TIMEOUT_INIT;
+	newicsk->icsk_ack.lrcvtime = tcp_jiffies32;
+
+	newtp->packets_out = 0;
+	newtp->retrans_out = 0;
+	newtp->sacked_out = 0;
+	newtp->snd_ssthresh = TCP_INFINITE_SSTHRESH;
+	newtp->tlp_high_seq = 0;
+	newtp->lsndtime = tcp_jiffies32;
+	newsk->sk_txhash = treq->txhash;
+	newtp->last_oow_ack_time = 0;
+	newtp->total_retrans = req->num_retrans;
+
+	/* So many TCP implementations out there (incorrectly) count the
+	 * initial SYN frame in their delayed-ACK and congestion control
+	 * algorithms that we must have the following bandaid to talk
+	 * efficiently to them.  -DaveM
+	 */
+	newtp->snd_cwnd = TCP_INIT_CWND;
+	newtp->snd_cwnd_cnt = 0;
+
+	/* There's a bubble in the pipe until at least the first ACK. */
+	newtp->app_limited = ~0U;
+
+	tcp_init_xmit_timers(newsk);
+	newtp->write_seq = newtp->pushed_seq = treq->snt_isn + 1;
+
+	newtp->rx_opt.saw_tstamp = 0;
+
+	newtp->rx_opt.dsack = 0;
+	newtp->rx_opt.num_sacks = 0;
+
+	newtp->urg_data = 0;
+
+	if (sock_flag(newsk, SOCK_KEEPOPEN))
+		inet_csk_reset_keepalive_timer(newsk,
+					       keepalive_time_when(newtp));
+
+	newtp->rx_opt.tstamp_ok = ireq->tstamp_ok;
+	newtp->rx_opt.sack_ok = ireq->sack_ok;
+	newtp->window_clamp = req->rsk_window_clamp;
+	newtp->rcv_ssthresh = req->rsk_rcv_wnd;
+	newtp->rcv_wnd = req->rsk_rcv_wnd;
+	newtp->rx_opt.wscale_ok = ireq->wscale_ok;
+	if (newtp->rx_opt.wscale_ok) {
+		newtp->rx_opt.snd_wscale = ireq->snd_wscale;
+		newtp->rx_opt.rcv_wscale = ireq->rcv_wscale;
+	} else {
+		newtp->rx_opt.snd_wscale = newtp->rx_opt.rcv_wscale = 0;
+		newtp->window_clamp = min(newtp->window_clamp, 65535U);
+	}
+	newtp->snd_wnd = ntohs(tcp_hdr(skb)->window) << newtp->rx_opt.snd_wscale;
+	newtp->max_window = newtp->snd_wnd;
+
+	if (newtp->rx_opt.tstamp_ok) {
+		newtp->rx_opt.ts_recent = req->ts_recent;
+		newtp->rx_opt.ts_recent_stamp = get_seconds();
+		newtp->tcp_header_len = sizeof(struct tcphdr) + TCPOLEN_TSTAMP_ALIGNED;
+	} else {
+		newtp->rx_opt.ts_recent_stamp = 0;
+		newtp->tcp_header_len = sizeof(struct tcphdr);
+	}
+	newtp->tsoffset = treq->ts_off;
 #ifdef CONFIG_TCP_MD5SIG
-		newtp->md5sig_info = NULL;	/*XXX*/
-		if (newtp->af_specific->md5_lookup(sk, newsk))
-			newtp->tcp_header_len += TCPOLEN_MD5SIG_ALIGNED;
+	newtp->md5sig_info = NULL;	/*XXX*/
+	if (newtp->af_specific->md5_lookup(sk, newsk))
+		newtp->tcp_header_len += TCPOLEN_MD5SIG_ALIGNED;
 #endif
-		if (skb->len >= TCP_MSS_DEFAULT + newtp->tcp_header_len)
-			newicsk->icsk_ack.last_seg_size = skb->len - newtp->tcp_header_len;
-		newtp->rx_opt.mss_clamp = req->mss;
-		tcp_ecn_openreq_child(newtp, req);
-		newtp->fastopen_req = NULL;
-		newtp->fastopen_rsk = NULL;
-		newtp->syn_data_acked = 0;
-		newtp->rack.mstamp = 0;
-		newtp->rack.advanced = 0;
-		newtp->rack.reo_wnd_steps = 1;
-		newtp->rack.last_delivered = 0;
-		newtp->rack.reo_wnd_persist = 0;
-		newtp->rack.dsack_seen = 0;
-
-		__TCP_INC_STATS(sock_net(sk), TCP_MIB_PASSIVEOPENS);
-	}
+	if (skb->len >= TCP_MSS_DEFAULT + newtp->tcp_header_len)
+		newicsk->icsk_ack.last_seg_size = skb->len - newtp->tcp_header_len;
+	newtp->rx_opt.mss_clamp = req->mss;
+	tcp_ecn_openreq_child(newtp, req);
+	newtp->fastopen_req = NULL;
+	newtp->fastopen_rsk = NULL;
+	newtp->syn_data_acked = 0;
+	newtp->rack.mstamp = 0;
+	newtp->rack.advanced = 0;
+	newtp->rack.reo_wnd_steps = 1;
+	newtp->rack.last_delivered = 0;
+	newtp->rack.reo_wnd_persist = 0;
+	newtp->rack.dsack_seen = 0;
+
+	__TCP_INC_STATS(sock_net(sk), TCP_MIB_PASSIVEOPENS);
+
 	return newsk;
 }
 EXPORT_SYMBOL(tcp_create_openreq_child);