[PATCH] [TCP]: Make invariant check complain about invalid sacked_out

[Ilpo Järvinen]

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

Signed-off-by: Ilpo Järvinen <[EMAIL PROTECTED]>
---
 net/ipv4/tcp_input.c |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index fef1191..f1eee2d 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2510,11 +2510,8 @@ 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;
 
-- 
1.5.0.6