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Commit 3ccd3130 authored by Ilpo Järvinen's avatar Ilpo Järvinen Committed by David S. Miller
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[TCP]: Make invariant check complain about invalid sacked_out 



Earlier resolution for NewReno's sacked_out should now keep
it small enough for this to become invariant-like check.

Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 61f1ab41

net/ipv4/tcp_input.c

+1 −4
Original line number Diff line number Diff line
@@ -2504,11 +2504,8 @@ tcp_fastretrans_alert(struct sock *sk, int pkts_acked, int flag) 
				    (tcp_fackets_out(tp) > tp->reordering));

	int fast_rexmit = 0;



	/* Some technical things:

	 * 1. Reno does not count dupacks (sacked_out) automatically. */

	if (!tp->packets_out)

	if (WARN_ON(!tp->packets_out && tp->sacked_out))

		tp->sacked_out = 0;



	if (WARN_ON(!tp->sacked_out && tp->fackets_out))

		tp->fackets_out = 0;