1 files changed, 44 insertions, 2 deletions

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index fdfb8fe8c38c..0a8ea8b35816 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -274,6 +274,9 @@ struct sk_buff {
 #if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
         __u8                    ipvs_property:1;
 #endif
+#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+        struct sk_buff          *nfct_reasm;
+#endif
 #ifdef CONFIG_BRIDGE_NETFILTER
         struct nf_bridge_info   *nf_bridge;
 #endif
@@ -1233,8 +1236,7 @@ extern unsigned int    datagram_poll(struct file *file, struct socket *sock,
 extern int             skb_copy_datagram_iovec(const struct sk_buff *from,
                                                int offset, struct iovec *to,
                                                int size);
-extern int             skb_copy_and_csum_datagram_iovec(const
-                                                        struct sk_buff *skb,
+extern int             skb_copy_and_csum_datagram_iovec(struct sk_buff *skb,
                                                         int hlen,
                                                         struct iovec *iov);
 extern void            skb_free_datagram(struct sock *sk, struct sk_buff *skb);
@@ -1302,6 +1304,30 @@ static inline void skb_set_timestamp(struct sk_buff *skb, const struct timeval *
 
 extern void __net_timestamp(struct sk_buff *skb);
 
+extern unsigned int __skb_checksum_complete(struct sk_buff *skb);
+
+/**
+ *      skb_checksum_complete - Calculate checksum of an entire packet
+ *      @skb: packet to process
+ *
+ *      This function calculates the checksum over the entire packet plus
+ *      the value of skb->csum.  The latter can be used to supply the
+ *      checksum of a pseudo header as used by TCP/UDP.  It returns the
+ *      checksum.
+ *
+ *      For protocols that contain complete checksums such as ICMP/TCP/UDP,
+ *      this function can be used to verify that checksum on received
+ *      packets.  In that case the function should return zero if the
+ *      checksum is correct.  In particular, this function will return zero
+ *      if skb->ip_summed is CHECKSUM_UNNECESSARY which indicates that the
+ *      hardware has already verified the correctness of the checksum.
+ */
+static inline unsigned int skb_checksum_complete(struct sk_buff *skb)
+{
+        return skb->ip_summed != CHECKSUM_UNNECESSARY &&
+                __skb_checksum_complete(skb);
+}
+
 #ifdef CONFIG_NETFILTER
 static inline void nf_conntrack_put(struct nf_conntrack *nfct)
 {
@@ -1313,10 +1339,26 @@ static inline void nf_conntrack_get(struct nf_conntrack *nfct)
         if (nfct)
                 atomic_inc(&nfct->use);
 }
+#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+static inline void nf_conntrack_get_reasm(struct sk_buff *skb)
+{
+        if (skb)
+                atomic_inc(&skb->users);
+}
+static inline void nf_conntrack_put_reasm(struct sk_buff *skb)
+{
+        if (skb)
+                kfree_skb(skb);
+}
+#endif
 static inline void nf_reset(struct sk_buff *skb)
 {
         nf_conntrack_put(skb->nfct);
         skb->nfct = NULL;
+#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+        nf_conntrack_put_reasm(skb->nfct_reasm);
+        skb->nfct_reasm = NULL;
+#endif
 }
 
 #ifdef CONFIG_BRIDGE_NETFILTER