[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/include/net/neighbour.h b/ap/os/linux/linux-3.4.x/include/net/neighbour.h
new file mode 100644
index 0000000..8e626fa
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/include/net/neighbour.h
@@ -0,0 +1,407 @@
+#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, 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