1 files changed, 2 insertions, 2 deletions

diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index b348dd70c685..c22a3780c14e 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -739,8 +739,8 @@ int dccp_invalid_packet(struct sk_buff *skb)
          * If P.type is not Data, Ack, or DataAck and P.X == 0 (the packet
          * has short sequence numbers), drop packet and return
          */
-        if (dh->dccph_type >= DCCP_PKT_DATA    &&
-            dh->dccph_type <= DCCP_PKT_DATAACK && dh->dccph_x == 0)  {
+        if ((dh->dccph_type < DCCP_PKT_DATA    ||
+            dh->dccph_type > DCCP_PKT_DATAACK) && dh->dccph_x == 0)  {
                 DCCP_WARN("P.type (%s) not Data || [Data]Ack, while P.X == 0\n",
                           dccp_packet_name(dh->dccph_type));
                 return 1;