Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits)
  [IPV6]: Consolidate the ip6_pol_route_(input|output) pair
  [TCP]: Make snd_cwnd_cnt 32-bit
  [TCP]: Update the /proc/net/tcp documentation
  [NETNS]: Don't panic on creating the namespace's loopback
  [NEIGH]: Ensure that pneigh_lookup is protected with RTNL
  [INET]: kmalloc+memset -> kzalloc in frag_alloc_queue
  [ISDN]: Fix compile with CONFIG_ISDN_X25 disabled.
  [IPV6]: Replace sk_buff ** with sk_buff * in input handlers
  [SELINUX]: Update for netfilter ->hook() arg changes.
  [INET]: Consolidate the xxx_put
  [INET]: Small cleanup for xxx_put after evictor consolidation
  [INET]: Consolidate the xxx_evictor
  [INET]: Consolidate the xxx_frag_destroy
  [INET]: Consolidate xxx_the secret_rebuild
  [INET]: Consolidate the xxx_frag_kill
  [INET]: Collect common frag sysctl variables together
  [INET]: Collect frag queues management objects together
  [INET]: Move common fields from frag_queues in one place.
  [TG3]: Fix performance regression on 5705.
  [ISDN]: Remove local copy of device name to make sure renames work.
  ...

1 files changed, 60 insertions, 0 deletions

diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
new file mode 100644
index 00000000000..911c2cd0294
--- /dev/null
+++ b/include/net/inet_frag.h
@@ -0,0 +1,60 @@
+#ifndef __NET_FRAG_H__
+#define __NET_FRAG_H__
+
+struct inet_frag_queue {
+	struct hlist_node	list;
+	struct list_head	lru_list;   /* lru list member */
+	spinlock_t		lock;
+	atomic_t		refcnt;
+	struct timer_list	timer;      /* when will this queue expire? */
+	struct sk_buff		*fragments; /* list of received fragments */
+	ktime_t			stamp;
+	int			len;        /* total length of orig datagram */
+	int			meat;
+	__u8			last_in;    /* first/last segment arrived? */
+
+#define COMPLETE		4
+#define FIRST_IN		2
+#define LAST_IN			1
+};
+
+#define INETFRAGS_HASHSZ		64
+
+struct inet_frags_ctl {
+	int high_thresh;
+	int low_thresh;
+	int timeout;
+	int secret_interval;
+};
+
+struct inet_frags {
+	struct list_head	lru_list;
+	struct hlist_head	hash[INETFRAGS_HASHSZ];
+	rwlock_t		lock;
+	u32			rnd;
+	int			nqueues;
+	int			qsize;
+	atomic_t		mem;
+	struct timer_list	secret_timer;
+	struct inet_frags_ctl	*ctl;
+
+	unsigned int		(*hashfn)(struct inet_frag_queue *);
+	void			(*destructor)(struct inet_frag_queue *);
+	void			(*skb_free)(struct sk_buff *);
+};
+
+void inet_frags_init(struct inet_frags *);
+void inet_frags_fini(struct inet_frags *);
+
+void inet_frag_kill(struct inet_frag_queue *q, struct inet_frags *f);
+void inet_frag_destroy(struct inet_frag_queue *q,
+				struct inet_frags *f, int *work);
+int inet_frag_evictor(struct inet_frags *f);
+
+static inline void inet_frag_put(struct inet_frag_queue *q, struct inet_frags *f)
+{
+	if (atomic_dec_and_test(&q->refcnt))
+		inet_frag_destroy(q, f, NULL);
+}
+
+#endif