[TCP]: SACK fastpath did override adjusted fackets_out
Do same adjustment to SACK fastpath counters provided that
they're valid.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 53232dd..20aea15 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -699,6 +699,14 @@
tp->fackets_out -= diff;
if ((int)tp->fackets_out < 0)
tp->fackets_out = 0;
+ /* SACK fastpath might overwrite it unless dealt with */
+ if (tp->fastpath_skb_hint != NULL &&
+ after(TCP_SKB_CB(tp->fastpath_skb_hint)->seq,
+ TCP_SKB_CB(skb)->seq)) {
+ tp->fastpath_cnt_hint -= diff;
+ if ((int)tp->fastpath_cnt_hint < 0)
+ tp->fastpath_cnt_hint = 0;
+ }
}
}