Commit e7395f1f authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

tcp: remove hdrlen argument from tcp_queue_rcv() 



Only one caller needs to pull TCP headers, so lets
move __skb_pull() to the caller side.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Acked-by: default avatarYuchung Cheng <ycheng@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 16e8c4ca

net/ipv4/tcp_input.c

+6 −7
Original line number Diff line number Diff line
@@ -4603,13 +4603,12 @@ end: 
	}

}



static int __must_check tcp_queue_rcv(struct sock *sk, struct sk_buff *skb, int hdrlen,

static int __must_check tcp_queue_rcv(struct sock *sk, struct sk_buff *skb,

				      bool *fragstolen)

{

	int eaten;

	struct sk_buff *tail = skb_peek_tail(&sk->sk_receive_queue);



	__skb_pull(skb, hdrlen);

	eaten = (tail &&

		 tcp_try_coalesce(sk, tail,

				  skb, fragstolen)) ? 1 : 0;
@@ -4660,7 +4659,7 @@ int tcp_send_rcvq(struct sock *sk, struct msghdr *msg, size_t size) 
	TCP_SKB_CB(skb)->end_seq = TCP_SKB_CB(skb)->seq + size;

	TCP_SKB_CB(skb)->ack_seq = tcp_sk(sk)->snd_una - 1;



	if (tcp_queue_rcv(sk, skb, 0, &fragstolen)) {

	if (tcp_queue_rcv(sk, skb, &fragstolen)) {

		WARN_ON_ONCE(fragstolen); /* should not happen */

		__kfree_skb(skb);

	}
@@ -4720,7 +4719,7 @@ queue_and_out: 
			goto drop;

		}



		eaten = tcp_queue_rcv(sk, skb, 0, &fragstolen);

		eaten = tcp_queue_rcv(sk, skb, &fragstolen);

		if (skb->len)

			tcp_event_data_recv(sk, skb);

		if (TCP_SKB_CB(skb)->tcp_flags & TCPHDR_FIN)
@@ -5596,8 +5595,8 @@ void tcp_rcv_established(struct sock *sk, struct sk_buff *skb) 
			NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPHPHITS);



			/* Bulk data transfer: receiver */

			eaten = tcp_queue_rcv(sk, skb, tcp_header_len,

					      &fragstolen);

			__skb_pull(skb, tcp_header_len);

			eaten = tcp_queue_rcv(sk, skb, &fragstolen);



			tcp_event_data_recv(sk, skb);

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