diff options
Diffstat (limited to 'ANDROID_3.4.5/include/net/neighbour.h')
| -rw-r--r-- | ANDROID_3.4.5/include/net/neighbour.h | 407 |
1 files changed, 0 insertions, 407 deletions
diff --git a/ANDROID_3.4.5/include/net/neighbour.h b/ANDROID_3.4.5/include/net/neighbour.h deleted file mode 100644 index 34c996f4..00000000 --- a/ANDROID_3.4.5/include/net/neighbour.h +++ /dev/null @@ -1,407 +0,0 @@ -#ifndef _NET_NEIGHBOUR_H -#define _NET_NEIGHBOUR_H - -#include <linux/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 - */ - -#include <linux/atomic.h> -#include <linux/netdevice.h> -#include <linux/skbuff.h> -#include <linux/rcupdate.h> -#include <linux/seq_file.h> - -#include <linux/err.h> -#include <linux/sysctl.h> -#include <linux/workqueue.h> -#include <net/rtnetlink.h> - -/* - * NUD stands for "neighbor unreachability detection" - */ - -#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 { -#ifdef CONFIG_NET_NS - struct net *net; -#endif - struct net_device *dev; - struct neigh_parms *next; - int (*neigh_setup)(struct neighbour *); - void (*neigh_cleanup)(struct neighbour *); - struct neigh_table *tbl; - - 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_bytes; - 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; /* number 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 */ - - unsigned long unres_discards; /* number of unresolved drops */ -}; - -#define NEIGH_CACHE_STAT_INC(tbl, field) this_cpu_inc((tbl)->stats->field) - -struct neighbour { - struct neighbour __rcu *next; - struct neigh_table *tbl; - struct neigh_parms *parms; - unsigned long confirmed; - unsigned long updated; - rwlock_t lock; - atomic_t refcnt; - struct sk_buff_head arp_queue; - unsigned int arp_queue_len_bytes; - struct timer_list timer; - unsigned long used; - atomic_t probes; - __u8 flags; - __u8 nud_state; - __u8 type; - __u8 dead; - seqlock_t ha_lock; - unsigned char ha[ALIGN(MAX_ADDR_LEN, sizeof(unsigned long))]; - struct hh_cache hh; - int (*output)(struct neighbour *, struct sk_buff *); - const struct neigh_ops *ops; - struct rcu_head rcu; - struct net_device *dev; - u8 primary_key[0]; -}; - -struct neigh_ops { - int family; - void (*solicit)(struct neighbour *, struct sk_buff *); - void (*error_report)(struct neighbour *, struct sk_buff *); - int (*output)(struct neighbour *, struct sk_buff *); - int (*connected_output)(struct neighbour *, struct sk_buff *); -}; - -struct pneigh_entry { - struct pneigh_entry *next; -#ifdef CONFIG_NET_NS - struct net *net; -#endif - struct net_device *dev; - u8 flags; - u8 key[0]; -}; - -/* - * neighbour table manipulation - */ - -#define NEIGH_NUM_HASH_RND 4 - -struct neigh_hash_table { - struct neighbour __rcu **hash_buckets; - unsigned int hash_shift; - __u32 hash_rnd[NEIGH_NUM_HASH_RND]; - struct rcu_head rcu; -}; - - -struct neigh_table { - struct neigh_table *next; - int family; - int entry_size; - int key_len; - __u32 (*hash)(const void *pkey, - const struct net_device *dev, - __u32 *hash_rnd); - 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_* should follow parms without a gap! */ - int gc_interval; - int gc_thresh1; - int gc_thresh2; - int gc_thresh3; - unsigned long last_flush; - struct delayed_work gc_work; - struct timer_list proxy_timer; - struct sk_buff_head proxy_queue; - atomic_t entries; - rwlock_t lock; - unsigned long last_rand; - struct neigh_statistics __percpu *stats; - struct neigh_hash_table __rcu *nht; - struct pneigh_entry **phash_buckets; -}; - -#define NEIGH_PRIV_ALIGN sizeof(long long) - -static inline void *neighbour_priv(const struct neighbour *n) -{ - return (char *)n + ALIGN(sizeof(*n) + n->tbl->key_len, NEIGH_PRIV_ALIGN); -} - -/* 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 void neigh_table_init_no_netlink(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, - struct net *net, - 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 neighbour *neigh, struct sk_buff *skb); -extern int neigh_connected_output(struct neighbour *neigh, struct sk_buff *skb); -extern int neigh_compat_output(struct neighbour *neigh, struct sk_buff *skb); -extern int neigh_direct_output(struct neighbour *neigh, 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); - -static inline -struct net *neigh_parms_net(const struct neigh_parms *parms) -{ - return read_pnet(&parms->net); -} - -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, struct net *net, const void *key, struct net_device *dev, int creat); -extern struct pneigh_entry *__pneigh_lookup(struct neigh_table *tbl, - struct net *net, - const void *key, - struct net_device *dev); -extern int pneigh_delete(struct neigh_table *tbl, struct net *net, const void *key, struct net_device *dev); - -static inline -struct net *pneigh_net(const struct pneigh_entry *pneigh) -{ - return read_pnet(&pneigh->net); -} - -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 seq_net_private p; - struct neigh_table *tbl; - struct neigh_hash_table *nht; - 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, - char *p_name, - proc_handler *proc_handler); -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 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_event_send(struct neighbour *neigh, struct sk_buff *skb) -{ - unsigned long now = jiffies; - - if (neigh->used != now) - neigh->used = now; - if (!(neigh->nud_state&(NUD_CONNECTED|NUD_DELAY|NUD_PROBE))) - return __neigh_event_send(neigh, skb); - return 0; -} - -#ifdef CONFIG_BRIDGE_NETFILTER -static inline int neigh_hh_bridge(struct hh_cache *hh, struct sk_buff *skb) -{ - unsigned seq, hh_alen; - - do { - seq = read_seqbegin(&hh->hh_lock); - hh_alen = HH_DATA_ALIGN(ETH_HLEN); - memcpy(skb->data - hh_alen, hh->hh_data, ETH_ALEN + hh_alen - ETH_HLEN); - } while (read_seqretry(&hh->hh_lock, seq)); - return 0; -} -#endif - -static inline int neigh_hh_output(struct hh_cache *hh, struct sk_buff *skb) -{ - unsigned seq; - int hh_len; - - do { - int hh_alen; - - seq = read_seqbegin(&hh->hh_lock); - hh_len = hh->hh_len; - hh_alen = HH_DATA_ALIGN(hh_len); - memcpy(skb->data - hh_alen, hh->hh_data, hh_alen); - } while (read_seqretry(&hh->hh_lock, seq)); - - skb_push(skb, hh_len); - return dev_queue_xmit(skb); -} - -static inline int neigh_output(struct neighbour *n, struct sk_buff *skb) -{ - struct hh_cache *hh = &n->hh; - if ((n->nud_state & NUD_CONNECTED) && hh->hh_len) - return neigh_hh_output(hh, skb); - else - return n->output(n, skb); -} - -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); -} - -struct neighbour_cb { - unsigned long sched_next; - unsigned int flags; -}; - -#define LOCALLY_ENQUEUED 0x1 - -#define NEIGH_CB(skb) ((struct neighbour_cb *)(skb)->cb) - -static inline void neigh_ha_snapshot(char *dst, const struct neighbour *n, - const struct net_device *dev) -{ - unsigned int seq; - - do { - seq = read_seqbegin(&n->ha_lock); - memcpy(dst, n->ha, dev->addr_len); - } while (read_seqretry(&n->ha_lock, seq)); -} -#endif |