X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=net%2Fipv4%2Ftcp_htcp.c;h=937549b8a9212fa6289964bde303367e2f462d74;hb=b594deb0cc54d857828d2e33b2e9d5a9f02f0e89;hp=af99776146ffc14a4f85cb08ceaaea619d7b8a90;hpb=b7e23d913aafc93fc5f119e1be17620073cc3811;p=~andy%2Flinux

diff --git a/net/ipv4/tcp_htcp.c b/net/ipv4/tcp_htcp.c
index af99776146f..937549b8a92 100644
--- a/net/ipv4/tcp_htcp.c
+++ b/net/ipv4/tcp_htcp.c
@@ -69,9 +69,12 @@ static u32 htcp_cwnd_undo(struct sock *sk)
 	const struct tcp_sock *tp = tcp_sk(sk);
 	struct htcp *ca = inet_csk_ca(sk);
 
-	ca->last_cong = ca->undo_last_cong;
-	ca->maxRTT = ca->undo_maxRTT;
-	ca->old_maxB = ca->undo_old_maxB;
+	if (ca->undo_last_cong) {
+		ca->last_cong = ca->undo_last_cong;
+		ca->maxRTT = ca->undo_maxRTT;
+		ca->old_maxB = ca->undo_old_maxB;
+		ca->undo_last_cong = 0;
+	}
 
 	return max(tp->snd_cwnd, (tp->snd_ssthresh << 7) / ca->beta);
 }
@@ -268,7 +271,10 @@ static void htcp_state(struct sock *sk, u8 new_state)
 	case TCP_CA_Open:
 		{
 			struct htcp *ca = inet_csk_ca(sk);
-			ca->last_cong = jiffies;
+			if (ca->undo_last_cong) {
+				ca->last_cong = jiffies;
+				ca->undo_last_cong = 0;
+			}
 		}
 		break;
 	case TCP_CA_CWR: