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Commit bdaae17d authored by Ilpo Järvinen's avatar Ilpo Järvinen Committed by David S. Miller
Browse files

[TCP] FRTO: Moved tcp_use_frto from tcp.h to tcp_input.c 



In addition, removed inline.

Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9ead9a1d

include/net/tcp.h

+1 −13
Original line number Diff line number Diff line
@@ -341,6 +341,7 @@ extern struct sock * tcp_check_req(struct sock *sk,struct sk_buff *skb, 
extern int			tcp_child_process(struct sock *parent,

						  struct sock *child,

						  struct sk_buff *skb);

extern int			tcp_use_frto(const struct sock *sk);

extern void			tcp_enter_frto(struct sock *sk);

extern void			tcp_enter_loss(struct sock *sk, int how);

extern void			tcp_clear_retrans(struct tcp_sock *tp);
@@ -1033,19 +1034,6 @@ static inline int tcp_paws_check(const struct tcp_options_received *rx_opt, int 


#define TCP_CHECK_TIMER(sk) do { } while (0)



static inline int tcp_use_frto(const struct sock *sk)

{

	const struct tcp_sock *tp = tcp_sk(sk);

	

	/* F-RTO must be activated in sysctl and there must be some

	 * unsent new data, and the advertised window should allow

	 * sending it.

	 */

	return (sysctl_tcp_frto && sk->sk_send_head &&

		!after(TCP_SKB_CB(sk->sk_send_head)->end_seq,

		       tp->snd_una + tp->snd_wnd));

}



static inline void tcp_mib_init(void)

{

	/* See RFC 2012 */

net/ipv4/tcp_input.c

+13 −0
Original line number Diff line number Diff line
@@ -1236,6 +1236,19 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_ 
	return flag;

}



int tcp_use_frto(const struct sock *sk)

{

	const struct tcp_sock *tp = tcp_sk(sk);



	/* F-RTO must be activated in sysctl and there must be some

	 * unsent new data, and the advertised window should allow

	 * sending it.

	 */

	return (sysctl_tcp_frto && sk->sk_send_head &&

		!after(TCP_SKB_CB(sk->sk_send_head)->end_seq,

		       tp->snd_una + tp->snd_wnd));

}



/* RTO occurred, but do not yet enter loss state. Instead, transmit two new

 * segments to see from the next ACKs whether any data was really missing.

 * If the RTO was spurious, new ACKs should arrive.