--- zzzz-none-000/linux-3.10.107/include/net/neighbour.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/include/net/neighbour.h 2021-02-04 17:41:59.000000000 +0000 @@ -21,6 +21,7 @@ #include #include #include +#include #include #include @@ -37,12 +38,37 @@ struct neighbour; +enum { + NEIGH_VAR_MCAST_PROBES, + NEIGH_VAR_UCAST_PROBES, + NEIGH_VAR_APP_PROBES, + NEIGH_VAR_MCAST_REPROBES, + NEIGH_VAR_RETRANS_TIME, + NEIGH_VAR_BASE_REACHABLE_TIME, + NEIGH_VAR_DELAY_PROBE_TIME, + NEIGH_VAR_GC_STALETIME, + NEIGH_VAR_QUEUE_LEN_BYTES, + NEIGH_VAR_PROXY_QLEN, + NEIGH_VAR_ANYCAST_DELAY, + NEIGH_VAR_PROXY_DELAY, + NEIGH_VAR_LOCKTIME, +#define NEIGH_VAR_DATA_MAX (NEIGH_VAR_LOCKTIME + 1) + /* Following are used as a second way to access one of the above */ + NEIGH_VAR_QUEUE_LEN, /* same data as NEIGH_VAR_QUEUE_LEN_BYTES */ + NEIGH_VAR_RETRANS_TIME_MS, /* same data as NEIGH_VAR_RETRANS_TIME */ + NEIGH_VAR_BASE_REACHABLE_TIME_MS, /* same data as NEIGH_VAR_BASE_REACHABLE_TIME */ + /* Following are used by "default" only */ + NEIGH_VAR_GC_INTERVAL, + NEIGH_VAR_GC_THRESH1, + NEIGH_VAR_GC_THRESH2, + NEIGH_VAR_GC_THRESH3, + NEIGH_VAR_MAX +}; + struct neigh_parms { -#ifdef CONFIG_NET_NS - struct net *net; -#endif + possible_net_t net; struct net_device *dev; - struct neigh_parms *next; + struct list_head list; int (*neigh_setup)(struct neighbour *); void (*neigh_cleanup)(struct neighbour *); struct neigh_table *tbl; @@ -53,22 +79,35 @@ 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; + int data[NEIGH_VAR_DATA_MAX]; + DECLARE_BITMAP(data_state, NEIGH_VAR_DATA_MAX); }; +static inline void neigh_var_set(struct neigh_parms *p, int index, int val) +{ + set_bit(index, p->data_state); + p->data[index] = val; +} + +#define NEIGH_VAR(p, attr) ((p)->data[NEIGH_VAR_ ## attr]) + +/* In ndo_neigh_setup, NEIGH_VAR_INIT should be used. + * In other cases, NEIGH_VAR_SET should be used. + */ +#define NEIGH_VAR_INIT(p, attr, val) (NEIGH_VAR(p, attr) = val) +#define NEIGH_VAR_SET(p, attr, val) neigh_var_set(p, NEIGH_VAR_ ## attr, val) + +static inline void neigh_parms_data_state_setall(struct neigh_parms *p) +{ + bitmap_fill(p->data_state, NEIGH_VAR_DATA_MAX); +} + +static inline void neigh_parms_data_state_cleanall(struct neigh_parms *p) +{ + bitmap_zero(p->data_state, NEIGH_VAR_DATA_MAX); +} + struct neigh_statistics { unsigned long allocs; /* number of allocated neighs */ unsigned long destroys; /* number of destroyed neighs */ @@ -86,6 +125,7 @@ unsigned long forced_gc_runs; /* number of forced GC runs */ unsigned long unres_discards; /* number of unresolved drops */ + unsigned long table_fulls; /* times even gc couldn't help */ }; #define NEIGH_CACHE_STAT_INC(tbl, field) this_cpu_inc((tbl)->stats->field) @@ -127,9 +167,7 @@ struct pneigh_entry { struct pneigh_entry *next; -#ifdef CONFIG_NET_NS - struct net *net; -#endif + possible_net_t net; struct net_device *dev; u8 flags; u8 key[0]; @@ -150,20 +188,21 @@ struct neigh_table { - struct neigh_table *next; int family; int entry_size; int key_len; + __be16 protocol; __u32 (*hash)(const void *pkey, const struct net_device *dev, __u32 *hash_rnd); + bool (*key_eq)(const struct neighbour *, const void *pkey); 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! */ + struct list_head parms_list; int gc_interval; int gc_thresh1; int gc_thresh2; @@ -180,6 +219,24 @@ struct pneigh_entry **phash_buckets; }; +enum { + NEIGH_ARP_TABLE = 0, + NEIGH_ND_TABLE = 1, + NEIGH_DN_TABLE = 2, + NEIGH_NR_TABLES, + NEIGH_LINK_TABLE = NEIGH_NR_TABLES /* Pseudo table for neigh_xmit */ +}; + +static inline int neigh_parms_family(struct neigh_parms *p) +{ + return p->tbl->family; +} + +struct neigh_mac_update { + unsigned char old_mac[ALIGN(MAX_ADDR_LEN, sizeof(unsigned long))]; + unsigned char update_mac[ALIGN(MAX_ADDR_LEN, sizeof(unsigned long))]; +}; + #define NEIGH_PRIV_ALIGN sizeof(long long) #define NEIGH_ENTRY_SIZE(size) ALIGN((size), NEIGH_PRIV_ALIGN) @@ -195,68 +252,124 @@ #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, - struct net *net, - const void *pkey); -extern struct neighbour * __neigh_create(struct neigh_table *tbl, - const void *pkey, - struct net_device *dev, - bool want_ref); + +static inline bool neigh_key_eq16(const struct neighbour *n, const void *pkey) +{ + return *(const u16 *)n->primary_key == *(const u16 *)pkey; +} + +static inline bool neigh_key_eq32(const struct neighbour *n, const void *pkey) +{ + return *(const u32 *)n->primary_key == *(const u32 *)pkey; +} + +static inline bool neigh_key_eq128(const struct neighbour *n, const void *pkey) +{ + const u32 *n32 = (const u32 *)n->primary_key; + const u32 *p32 = pkey; + + return ((n32[0] ^ net_hdr_word(&p32[0])) | + (n32[1] ^ net_hdr_word(&p32[1])) | + (n32[2] ^ net_hdr_word(&p32[2])) | + (n32[3] ^ net_hdr_word(&p32[3]))) == 0; +} + +static inline struct neighbour *___neigh_lookup_noref( + struct neigh_table *tbl, + bool (*key_eq)(const struct neighbour *n, const void *pkey), + __u32 (*hash)(const void *pkey, + const struct net_device *dev, + __u32 *hash_rnd), + const void *pkey, + struct net_device *dev) +{ + struct neigh_hash_table *nht = rcu_dereference_bh(tbl->nht); + struct neighbour *n; + u32 hash_val; + + hash_val = hash(pkey, dev, nht->hash_rnd) >> (32 - nht->hash_shift); + for (n = rcu_dereference_bh(nht->hash_buckets[hash_val]); + n != NULL; + n = rcu_dereference_bh(n->next)) { + if (n->dev == dev && key_eq(n, pkey)) + return n; + } + + return NULL; +} + +static inline struct neighbour *__neigh_lookup_noref(struct neigh_table *tbl, + const void *pkey, + struct net_device *dev) +{ + return ___neigh_lookup_noref(tbl, tbl->key_eq, tbl->hash, pkey, dev); +} + +void neigh_table_init(int index, struct neigh_table *tbl); +int neigh_table_clear(int index, struct neigh_table *tbl); +struct neighbour *neigh_lookup(struct neigh_table *tbl, const void *pkey, + struct net_device *dev); +struct neighbour *neigh_lookup_nodev(struct neigh_table *tbl, struct net *net, + const void *pkey); +struct neighbour *__neigh_create(struct neigh_table *tbl, const void *pkey, + struct net_device *dev, bool want_ref); static inline struct neighbour *neigh_create(struct neigh_table *tbl, const void *pkey, struct net_device *dev) { return __neigh_create(tbl, pkey, dev, true); } -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, +void neigh_destroy(struct neighbour *neigh); +int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb); +int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new, u32 flags); +void __neigh_set_probe_once(struct neighbour *neigh); +void neigh_changeaddr(struct neigh_table *tbl, struct net_device *dev); +int neigh_ifdown(struct neigh_table *tbl, struct net_device *dev); +int neigh_resolve_output(struct neighbour *neigh, struct sk_buff *skb); +int neigh_connected_output(struct neighbour *neigh, struct sk_buff *skb); +int neigh_direct_output(struct neighbour *neigh, struct sk_buff *skb); +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); +struct neigh_parms *neigh_parms_alloc(struct net_device *dev, + struct neigh_table *tbl); +void neigh_parms_release(struct neigh_table *tbl, struct neigh_parms *parms); static inline -struct net *neigh_parms_net(const struct neigh_parms *parms) +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); +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); +void pneigh_enqueue(struct neigh_table *tbl, struct neigh_parms *p, + struct sk_buff *skb); +struct pneigh_entry *pneigh_lookup(struct neigh_table *tbl, struct net *net, + const void *key, struct net_device *dev, + int creat); +struct pneigh_entry *__pneigh_lookup(struct neigh_table *tbl, struct net *net, + const void *key, struct net_device *dev); +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) +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 *)); +void neigh_app_ns(struct neighbour *n); +void neigh_for_each(struct neigh_table *tbl, + void (*cb)(struct neighbour *, void *), void *cookie); +void __neigh_for_each_release(struct neigh_table *tbl, + int (*cb)(struct neighbour *)); +int neigh_xmit(int fam, struct net_device *, const void *, struct sk_buff *); +void pneigh_for_each(struct neigh_table *tbl, + void (*cb)(struct pneigh_entry *)); + +extern void neigh_mac_update_register_notify(struct notifier_block *nb); +extern void neigh_mac_update_unregister_notify(struct notifier_block *nb); struct neigh_seq_state { struct seq_net_private p; @@ -270,15 +383,23 @@ #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); +void *neigh_seq_start(struct seq_file *, loff_t *, struct neigh_table *, + unsigned int); +void *neigh_seq_next(struct seq_file *, void *, loff_t *); +void neigh_seq_stop(struct seq_file *, void *); + +int neigh_proc_dointvec(struct ctl_table *ctl, int write, + void __user *buffer, size_t *lenp, loff_t *ppos); +int neigh_proc_dointvec_jiffies(struct ctl_table *ctl, int write, + void __user *buffer, + size_t *lenp, loff_t *ppos); +int neigh_proc_dointvec_ms_jiffies(struct ctl_table *ctl, int write, + void __user *buffer, + size_t *lenp, loff_t *ppos); + +int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p, + proc_handler *proc_handler); +void neigh_sysctl_unregister(struct neigh_parms *p); static inline void __neigh_parms_put(struct neigh_parms *parms) { @@ -321,7 +442,7 @@ return 0; } -#ifdef CONFIG_BRIDGE_NETFILTER +#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) static inline int neigh_hh_bridge(struct hh_cache *hh, struct sk_buff *skb) { unsigned int seq, hh_alen; @@ -400,4 +521,6 @@ memcpy(dst, n->ha, dev->addr_len); } while (read_seqretry(&n->ha_lock, seq)); } + + #endif