1 files changed, 74 insertions, 10 deletions

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 4286d832166f..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
@@ -603,23 +606,23 @@ static inline void skb_queue_head_init(struct sk_buff_head *list)
  */
 
 /**
- *	__skb_queue_head - queue a buffer at the list head
+ *	__skb_queue_after - queue a buffer at the list head
  *	@list: list to use
+ *	@prev: place after this buffer
  *	@newsk: buffer to queue
  *
- *	Queue a buffer at the start of a list. This function takes no locks
+ *	Queue a buffer int the middle of a list. This function takes no locks
  *	and you must therefore hold required locks before calling it.
  *
  *	A buffer cannot be placed on two lists at the same time.
  */
-extern void skb_queue_head(struct sk_buff_head *list, struct sk_buff *newsk);
-static inline void __skb_queue_head(struct sk_buff_head *list,
-				    struct sk_buff *newsk)
+static inline void __skb_queue_after(struct sk_buff_head *list,
+				     struct sk_buff *prev,
+				     struct sk_buff *newsk)
 {
-	struct sk_buff *prev, *next;
-
+	struct sk_buff *next;
 	list->qlen++;
-	prev = (struct sk_buff *)list;
+
 	next = prev->next;
 	newsk->next = next;
 	newsk->prev = prev;
@@ -627,6 +630,23 @@ static inline void __skb_queue_head(struct sk_buff_head *list,
 }
 
 /**
+ *	__skb_queue_head - queue a buffer at the list head
+ *	@list: list to use
+ *	@newsk: buffer to queue
+ *
+ *	Queue a buffer at the start of a list. This function takes no locks
+ *	and you must therefore hold required locks before calling it.
+ *
+ *	A buffer cannot be placed on two lists at the same time.
+ */
+extern void skb_queue_head(struct sk_buff_head *list, struct sk_buff *newsk);
+static inline void __skb_queue_head(struct sk_buff_head *list,
+				    struct sk_buff *newsk)
+{
+	__skb_queue_after(list, (struct sk_buff *)list, newsk);
+}
+
+/**
  *	__skb_queue_tail - queue a buffer at the list tail
  *	@list: list to use
  *	@newsk: buffer to queue
@@ -1203,6 +1223,11 @@ static inline void kunmap_skb_frag(void *vaddr)
 		     prefetch(skb->next), (skb != (struct sk_buff *)(queue));	\
 		     skb = skb->next)
 
+#define skb_queue_reverse_walk(queue, skb) \
+		for (skb = (queue)->prev;					\
+		     prefetch(skb->prev), (skb != (struct sk_buff *)(queue));	\
+		     skb = skb->prev)
+
 
 extern struct sk_buff *skb_recv_datagram(struct sock *sk, unsigned flags,
 					 int noblock, int *err);
@@ -1211,8 +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);
@@ -1280,6 +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)
 {
@@ -1291,10 +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