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Commit 9b2156fa authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'tcp-fixes-in-timeout-and-retransmission-accounting' 



Yuchung Cheng says:

====================
tcp: fixes in timeout and retransmission accounting

This patch set has assorted fixes of minor accounting issues in
timeout, window probe, and retransmission stats.
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents c0f53771 e1561fe2

net/ipv4/tcp_output.c

+1 −1
Original line number Diff line number Diff line
@@ -2920,7 +2920,7 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb, int segs) 
		TCP_SKB_CB(skb)->sacked |= TCPCB_EVER_RETRANS;

		trace_tcp_retransmit_skb(sk, skb);

	} else if (err != -EBUSY) {

		NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPRETRANSFAIL);

		NET_ADD_STATS(sock_net(sk), LINUX_MIB_TCPRETRANSFAIL, segs);

	}

	return err;

}

net/ipv4/tcp_timer.c

+5 −5
Original line number Diff line number Diff line
@@ -378,7 +378,7 @@ static void tcp_probe_timer(struct sock *sk) 
			return;

	}



	if (icsk->icsk_probes_out > max_probes) {

	if (icsk->icsk_probes_out >= max_probes) {

abort:		tcp_write_err(sk);

	} else {

		/* Only send another probe if we didn't close things up. */
@@ -484,11 +484,12 @@ void tcp_retransmit_timer(struct sock *sk) 
		goto out_reset_timer;

	}



	__NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPTIMEOUTS);

	if (tcp_write_timeout(sk))

		goto out;



	if (icsk->icsk_retransmits == 0) {

		int mib_idx;

		int mib_idx = 0;



		if (icsk->icsk_ca_state == TCP_CA_Recovery) {

			if (tcp_is_sack(tp))
@@ -503,9 +504,8 @@ void tcp_retransmit_timer(struct sock *sk) 
				mib_idx = LINUX_MIB_TCPSACKFAILURES;

			else

				mib_idx = LINUX_MIB_TCPRENOFAILURES;

		} else {

			mib_idx = LINUX_MIB_TCPTIMEOUTS;

		}

		if (mib_idx)

			__NET_INC_STATS(sock_net(sk), mib_idx);

	}