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!
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
new file mode 100644
index 0000000..4f33bbc
--- /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
+
+