diff options
Diffstat (limited to 'include/net/inet_hashtables.h')
| -rw-r--r-- | include/net/inet_hashtables.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h index 3a6c11ca421d..da9705525f15 100644 --- a/include/net/inet_hashtables.h +++ b/include/net/inet_hashtables.h @@ -14,12 +14,15 @@ #ifndef _INET_HASHTABLES_H #define _INET_HASHTABLES_H +#include <linux/interrupt.h> #include <linux/ip.h> #include <linux/list.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/types.h> +#include <net/sock.h> + /* This is for all connections with a full identity, no wildcards. * New scheme, half the table is for TIME_WAIT, the other half is * for the rest. I'll experiment with dynamic table growth later. @@ -113,6 +116,7 @@ struct inet_hashinfo { atomic_t lhash_users; wait_queue_head_t lhash_wait; spinlock_t portalloc_lock; + kmem_cache_t *bind_bucket_cachep; }; static inline int inet_ehashfn(const __u32 laddr, const __u16 lport, @@ -148,6 +152,9 @@ static inline int inet_bhashfn(const __u16 lport, const int bhash_size) return lport & (bhash_size - 1); } +extern void inet_bind_hash(struct sock *sk, struct inet_bind_bucket *tb, + const unsigned short snum); + /* These can have wildcards, don't try too hard. */ static inline int inet_lhashfn(const unsigned short num) { @@ -159,4 +166,29 @@ static inline int inet_sk_listen_hashfn(const struct sock *sk) return inet_lhashfn(inet_sk(sk)->num); } +/* Caller must disable local BH processing. */ +static inline void __inet_inherit_port(struct inet_hashinfo *table, + struct sock *sk, struct sock *child) +{ + const int bhash = inet_bhashfn(inet_sk(child)->num, table->bhash_size); + struct inet_bind_hashbucket *head = &table->bhash[bhash]; + struct inet_bind_bucket *tb; + + spin_lock(&head->lock); + tb = inet_sk(sk)->bind_hash; + sk_add_bind_node(child, &tb->owners); + inet_sk(child)->bind_hash = tb; + spin_unlock(&head->lock); +} + +static inline void inet_inherit_port(struct inet_hashinfo *table, + struct sock *sk, struct sock *child) +{ + local_bh_disable(); + __inet_inherit_port(table, sk, child); + local_bh_enable(); +} + +extern void inet_put_port(struct inet_hashinfo *table, struct sock *sk); + #endif /* _INET_HASHTABLES_H */ |