X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=net%2Fipv4%2Ftcp_output.c;h=20aea1595c4daab9f61991792cd56a4877180276;hb=dc690d8ef842b464f1c429a376ca16cb8dbee6ae;hp=53232dd6fb48af5a9c4f5d2373a1630936bb7980;hpb=31f6e1bd3b58c9a67e5ea0c2d372fbf5fc9e326d;p=karo-tx-linux.git

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 53232dd6fb48..20aea1595c4d 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -699,6 +699,14 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, unsigned int mss
 			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;
+			}
 		}
 	}