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[INET]: Generalise tcp_bind_hash & tcp_inherit_port

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This required moving tcp_bucket_cachep to inet_hashinfo.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo
2005-08-09 20:07:13 -07:00
committed by David S. Miller
parent ff21d5774b
commit 2d8c4ce519
6 changed files with 81 additions and 80 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
include/net/inet_hashtables.h
View File

@@ -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 */

11
include/net/tcp.h
View File

@@ -51,14 +51,10 @@ extern struct inet_hashinfo tcp_hashinfo;
#define tcp_lhash_users (tcp_hashinfo.lhash_users)
#define tcp_lhash_wait (tcp_hashinfo.lhash_wait)
#define tcp_portalloc_lock (tcp_hashinfo.portalloc_lock)
extern kmem_cache_t *tcp_bucket_cachep;
#define tcp_bucket_cachep (tcp_hashinfo.bind_bucket_cachep)
extern int tcp_port_rover;
extern void tcp_bind_hash(struct sock *sk, struct inet_bind_bucket *tb,
unsigned short snum);
#if (BITS_PER_LONG == 64)
#define TCP_ADDRCMP_ALIGN_BYTES 8
#else
@@ -549,9 +545,6 @@ DECLARE_SNMP_STAT(struct tcp_mib, tcp_statistics);
#define TCP_ADD_STATS_BH(field, val) SNMP_ADD_STATS_BH(tcp_statistics, field, val)
#define TCP_ADD_STATS_USER(field, val) SNMP_ADD_STATS_USER(tcp_statistics, field, val)
extern void tcp_put_port(struct sock *sk);
extern void tcp_inherit_port(struct sock *sk, struct sock *child);
extern void tcp_v4_err(struct sk_buff *skb, u32);
extern void tcp_shutdown (struct sock *sk, int how);
@@ -1268,7 +1261,7 @@ static __inline__ void tcp_set_state(struct sock *sk, int state)
sk->sk_prot->unhash(sk);
if (inet_sk(sk)->bind_hash &&
!(sk->sk_userlocks & SOCK_BINDPORT_LOCK))
tcp_put_port(sk);
inet_put_port(&tcp_hashinfo, sk);
/* fall through */
default:
if (oldstate==TCP_ESTABLISHED)