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-rw-r--r--include/net/netfilter/nf_conntrack.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index c7c42e7acc31..5d4f8e586e32 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -307,6 +307,12 @@ static inline int nf_ct_is_untracked(const struct nf_conn *ct)
return test_bit(IPS_UNTRACKED_BIT, &ct->status);
}
+/* Packet is received from loopback */
+static inline bool nf_is_loopback_packet(const struct sk_buff *skb)
+{
+ return skb->dev && skb->skb_iif && skb->dev->flags & IFF_LOOPBACK;
+}
+
extern int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp);
extern unsigned int nf_conntrack_htable_size;
extern unsigned int nf_conntrack_max;