Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 370 insertions, 0 deletions

diff --git a/include/net/neighbour.h b/include/net/neighbour.h
new file mode 100644
index 000000000000..4f33bbc21e7f
--- /dev/null
+++ b/include/net/neighbour.h
@@ -0,0 +1,370 @@
+#ifndef _NET_NEIGHBOUR_H
+#define _NET_NEIGHBOUR_H
+
+/*
+ *	Generic neighbour manipulation
+ *
+ *	Authors:
+ *	Pedro Roque		<roque@di.fc.ul.pt>
+ *	Alexey Kuznetsov	<kuznet@ms2.inr.ac.ru>
+ *
+ * 	Changes:
+ *
+ *	Harald Welte:		<laforge@gnumonks.org>
+ *		- Add neighbour cache statistics like rtstat
+ */
+
+/* The following flags & states are exported to user space,
+   so that they should be moved to include/linux/ directory.
+ */
+
+/*
+ *	Neighbor Cache Entry Flags
+ */
+
+#define NTF_PROXY	0x08	/* == ATF_PUBL */
+#define NTF_ROUTER	0x80
+
+/*
+ *	Neighbor Cache Entry States.
+ */
+
+#define NUD_INCOMPLETE	0x01
+#define NUD_REACHABLE	0x02
+#define NUD_STALE	0x04
+#define NUD_DELAY	0x08
+#define NUD_PROBE	0x10
+#define NUD_FAILED	0x20
+
+/* Dummy states */
+#define NUD_NOARP	0x40
+#define NUD_PERMANENT	0x80
+#define NUD_NONE	0x00
+
+/* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
+   and make no address resolution or NUD.
+   NUD_PERMANENT is also cannot be deleted by garbage collectors.
+ */
+
+#ifdef __KERNEL__
+
+#include <asm/atomic.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/rcupdate.h>
+#include <linux/seq_file.h>
+
+#include <linux/err.h>
+#include <linux/sysctl.h>
+
+#define NUD_IN_TIMER	(NUD_INCOMPLETE|NUD_REACHABLE|NUD_DELAY|NUD_PROBE)
+#define NUD_VALID	(NUD_PERMANENT|NUD_NOARP|NUD_REACHABLE|NUD_PROBE|NUD_STALE|NUD_DELAY)
+#define NUD_CONNECTED	(NUD_PERMANENT|NUD_NOARP|NUD_REACHABLE)
+
+struct neighbour;
+
+struct neigh_parms
+{
+	struct neigh_parms *next;
+	int	(*neigh_setup)(struct neighbour *);
+	struct neigh_table *tbl;
+	int	entries;
+	void	*priv;
+
+	void	*sysctl_table;
+
+	int dead;
+	atomic_t refcnt;
+	struct rcu_head rcu_head;
+
+	int	base_reachable_time;
+	int	retrans_time;
+	int	gc_staletime;
+	int	reachable_time;
+	int	delay_probe_time;
+
+	int	queue_len;
+	int	ucast_probes;
+	int	app_probes;
+	int	mcast_probes;
+	int	anycast_delay;
+	int	proxy_delay;
+	int	proxy_qlen;
+	int	locktime;
+};
+
+struct neigh_statistics
+{
+	unsigned long allocs;		/* number of allocated neighs */
+	unsigned long destroys;		/* number of destroyed neighs */
+	unsigned long hash_grows;	/* number of hash resizes */
+
+	unsigned long res_failed;	/* nomber of failed resolutions */
+
+	unsigned long lookups;		/* number of lookups */
+	unsigned long hits;		/* number of hits (among lookups) */
+
+	unsigned long rcv_probes_mcast;	/* number of received mcast ipv6 */
+	unsigned long rcv_probes_ucast; /* number of received ucast ipv6 */
+
+	unsigned long periodic_gc_runs;	/* number of periodic GC runs */
+	unsigned long forced_gc_runs;	/* number of forced GC runs */
+};
+
+#define NEIGH_CACHE_STAT_INC(tbl, field)				\
+	do {								\
+		preempt_disable();					\
+		(per_cpu_ptr((tbl)->stats, smp_processor_id())->field)++; \
+		preempt_enable();					\
+	} while (0)
+
+struct neighbour
+{
+	struct neighbour	*next;
+	struct neigh_table	*tbl;
+	struct neigh_parms	*parms;
+	struct net_device		*dev;
+	unsigned long		used;
+	unsigned long		confirmed;
+	unsigned long		updated;
+	__u8			flags;
+	__u8			nud_state;
+	__u8			type;
+	__u8			dead;
+	atomic_t		probes;
+	rwlock_t		lock;
+	unsigned char		ha[(MAX_ADDR_LEN+sizeof(unsigned long)-1)&~(sizeof(unsigned long)-1)];
+	struct hh_cache		*hh;
+	atomic_t		refcnt;
+	int			(*output)(struct sk_buff *skb);
+	struct sk_buff_head	arp_queue;
+	struct timer_list	timer;
+	struct neigh_ops	*ops;
+	u8			primary_key[0];
+};
+
+struct neigh_ops
+{
+	int			family;
+	void			(*destructor)(struct neighbour *);
+	void			(*solicit)(struct neighbour *, struct sk_buff*);
+	void			(*error_report)(struct neighbour *, struct sk_buff*);
+	int			(*output)(struct sk_buff*);
+	int			(*connected_output)(struct sk_buff*);
+	int			(*hh_output)(struct sk_buff*);
+	int			(*queue_xmit)(struct sk_buff*);
+};
+
+struct pneigh_entry
+{
+	struct pneigh_entry	*next;
+	struct net_device		*dev;
+	u8			key[0];
+};
+
+/*
+ *	neighbour table manipulation
+ */
+
+
+struct neigh_table
+{
+	struct neigh_table	*next;
+	int			family;
+	int			entry_size;
+	int			key_len;
+	__u32			(*hash)(const void *pkey, const struct net_device *);
+	int			(*constructor)(struct neighbour *);
+	int			(*pconstructor)(struct pneigh_entry *);
+	void			(*pdestructor)(struct pneigh_entry *);
+	void			(*proxy_redo)(struct sk_buff *skb);
+	char			*id;
+	struct neigh_parms	parms;
+	/* HACK. gc_* shoul follow parms without a gap! */
+	int			gc_interval;
+	int			gc_thresh1;
+	int			gc_thresh2;
+	int			gc_thresh3;
+	unsigned long		last_flush;
+	struct timer_list 	gc_timer;
+	struct timer_list 	proxy_timer;
+	struct sk_buff_head	proxy_queue;
+	atomic_t		entries;
+	rwlock_t		lock;
+	unsigned long		last_rand;
+	struct neigh_parms	*parms_list;
+	kmem_cache_t		*kmem_cachep;
+	struct neigh_statistics	*stats;
+	struct neighbour	**hash_buckets;
+	unsigned int		hash_mask;
+	__u32			hash_rnd;
+	unsigned int		hash_chain_gc;
+	struct pneigh_entry	**phash_buckets;
+#ifdef CONFIG_PROC_FS
+	struct proc_dir_entry	*pde;
+#endif
+};
+
+/* flags for neigh_update() */
+#define NEIGH_UPDATE_F_OVERRIDE			0x00000001
+#define NEIGH_UPDATE_F_WEAK_OVERRIDE		0x00000002
+#define NEIGH_UPDATE_F_OVERRIDE_ISROUTER	0x00000004
+#define NEIGH_UPDATE_F_ISROUTER			0x40000000
+#define NEIGH_UPDATE_F_ADMIN			0x80000000
+
+extern void			neigh_table_init(struct neigh_table *tbl);
+extern int			neigh_table_clear(struct neigh_table *tbl);
+extern struct neighbour *	neigh_lookup(struct neigh_table *tbl,
+					     const void *pkey,
+					     struct net_device *dev);
+extern struct neighbour *	neigh_lookup_nodev(struct neigh_table *tbl,
+						   const void *pkey);
+extern struct neighbour *	neigh_create(struct neigh_table *tbl,
+					     const void *pkey,
+					     struct net_device *dev);
+extern void			neigh_destroy(struct neighbour *neigh);
+extern int			__neigh_event_send(struct neighbour *neigh, struct sk_buff *skb);
+extern int			neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new, 
+					     u32 flags);
+extern void			neigh_changeaddr(struct neigh_table *tbl, struct net_device *dev);
+extern int			neigh_ifdown(struct neigh_table *tbl, struct net_device *dev);
+extern int			neigh_resolve_output(struct sk_buff *skb);
+extern int			neigh_connected_output(struct sk_buff *skb);
+extern int			neigh_compat_output(struct sk_buff *skb);
+extern struct neighbour 	*neigh_event_ns(struct neigh_table *tbl,
+						u8 *lladdr, void *saddr,
+						struct net_device *dev);
+
+extern struct neigh_parms	*neigh_parms_alloc(struct net_device *dev, struct neigh_table *tbl);
+extern void			neigh_parms_release(struct neigh_table *tbl, struct neigh_parms *parms);
+extern void			neigh_parms_destroy(struct neigh_parms *parms);
+extern unsigned long		neigh_rand_reach_time(unsigned long base);
+
+extern void			pneigh_enqueue(struct neigh_table *tbl, struct neigh_parms *p,
+					       struct sk_buff *skb);
+extern struct pneigh_entry	*pneigh_lookup(struct neigh_table *tbl, const void *key, struct net_device *dev, int creat);
+extern int			pneigh_delete(struct neigh_table *tbl, const void *key, struct net_device *dev);
+
+struct netlink_callback;
+struct nlmsghdr;
+extern int neigh_dump_info(struct sk_buff *skb, struct netlink_callback *cb);
+extern int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
+extern int neigh_delete(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
+extern void neigh_app_ns(struct neighbour *n);
+
+extern void neigh_for_each(struct neigh_table *tbl, void (*cb)(struct neighbour *, void *), void *cookie);
+extern void __neigh_for_each_release(struct neigh_table *tbl, int (*cb)(struct neighbour *));
+extern void pneigh_for_each(struct neigh_table *tbl, void (*cb)(struct pneigh_entry *));
+
+struct neigh_seq_state {
+	struct neigh_table *tbl;
+	void *(*neigh_sub_iter)(struct neigh_seq_state *state,
+				struct neighbour *n, loff_t *pos);
+	unsigned int bucket;
+	unsigned int flags;
+#define NEIGH_SEQ_NEIGH_ONLY	0x00000001
+#define NEIGH_SEQ_IS_PNEIGH	0x00000002
+#define NEIGH_SEQ_SKIP_NOARP	0x00000004
+};
+extern void *neigh_seq_start(struct seq_file *, loff_t *, struct neigh_table *, unsigned int);
+extern void *neigh_seq_next(struct seq_file *, void *, loff_t *);
+extern void neigh_seq_stop(struct seq_file *, void *);
+
+extern int			neigh_sysctl_register(struct net_device *dev, 
+						      struct neigh_parms *p,
+						      int p_id, int pdev_id,
+						      char *p_name,
+						      proc_handler *proc_handler,
+						      ctl_handler *strategy);
+extern void			neigh_sysctl_unregister(struct neigh_parms *p);
+
+static inline void __neigh_parms_put(struct neigh_parms *parms)
+{
+	atomic_dec(&parms->refcnt);
+}
+
+static inline void neigh_parms_put(struct neigh_parms *parms)
+{
+	if (atomic_dec_and_test(&parms->refcnt))
+		neigh_parms_destroy(parms);
+}
+
+static inline struct neigh_parms *neigh_parms_clone(struct neigh_parms *parms)
+{
+	atomic_inc(&parms->refcnt);
+	return parms;
+}
+
+/*
+ *	Neighbour references
+ */
+
+static inline void neigh_release(struct neighbour *neigh)
+{
+	if (atomic_dec_and_test(&neigh->refcnt))
+		neigh_destroy(neigh);
+}
+
+static inline struct neighbour * neigh_clone(struct neighbour *neigh)
+{
+	if (neigh)
+		atomic_inc(&neigh->refcnt);
+	return neigh;
+}
+
+#define neigh_hold(n)	atomic_inc(&(n)->refcnt)
+
+static inline void neigh_confirm(struct neighbour *neigh)
+{
+	if (neigh)
+		neigh->confirmed = jiffies;
+}
+
+static inline int neigh_is_connected(struct neighbour *neigh)
+{
+	return neigh->nud_state&NUD_CONNECTED;
+}
+
+static inline int neigh_is_valid(struct neighbour *neigh)
+{
+	return neigh->nud_state&NUD_VALID;
+}
+
+static inline int neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
+{
+	neigh->used = jiffies;
+	if (!(neigh->nud_state&(NUD_CONNECTED|NUD_DELAY|NUD_PROBE)))
+		return __neigh_event_send(neigh, skb);
+	return 0;
+}
+
+static inline struct neighbour *
+__neigh_lookup(struct neigh_table *tbl, const void *pkey, struct net_device *dev, int creat)
+{
+	struct neighbour *n = neigh_lookup(tbl, pkey, dev);
+
+	if (n || !creat)
+		return n;
+
+	n = neigh_create(tbl, pkey, dev);
+	return IS_ERR(n) ? NULL : n;
+}
+
+static inline struct neighbour *
+__neigh_lookup_errno(struct neigh_table *tbl, const void *pkey,
+  struct net_device *dev)
+{
+	struct neighbour *n = neigh_lookup(tbl, pkey, dev);
+
+	if (n)
+		return n;
+
+	return neigh_create(tbl, pkey, dev);
+}
+
+#define LOCALLY_ENQUEUED -2
+
+#endif
+#endif
+
+