2 files changed, 32 insertions, 0 deletions

diff --git a/net/packet/Kconfig b/net/packet/Kconfig
new file mode 100644
index 000000000000..34ff93ff894d
--- /dev/null
+++ b/net/packet/Kconfig
@@ -0,0 +1,26 @@
+#
+# Packet configuration
+#
+
+config PACKET
+        tristate "Packet socket"
+        ---help---
+          The Packet protocol is used by applications which communicate
+          directly with network devices without an intermediate network
+          protocol implemented in the kernel, e.g. tcpdump.  If you want them
+          to work, choose Y.
+
+          To compile this driver as a module, choose M here: the module will
+          be called af_packet.
+
+          If unsure, say Y.
+
+config PACKET_MMAP
+        bool "Packet socket: mmapped IO"
+        depends on PACKET
+        help
+          If you say Y here, the Packet protocol driver will use an IO
+          mechanism that results in faster communication.
+
+          If unsure, say N.
+
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 0269616e75a1..c9d5980aa4de 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -274,6 +274,9 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev,  struct
         dst_release(skb->dst);
         skb->dst = NULL;
 
+        /* drop conntrack reference */
+        nf_reset(skb);
+
         spkt = (struct sockaddr_pkt*)skb->cb;
 
         skb_push(skb, skb->data-skb->mac.raw);
@@ -517,6 +520,9 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev,  struct packe
         dst_release(skb->dst);
         skb->dst = NULL;
 
+        /* drop conntrack reference */
+        nf_reset(skb);
+
         spin_lock(&sk->sk_receive_queue.lock);
         po->stats.tp_packets++;
         __skb_queue_tail(&sk->sk_receive_queue, skb);