#ifndef _INET_HASHTABLES_H
#define _INET_HASHTABLES_H
-#include <linux/config.h>
#include <linux/interrupt.h>
#include <linux/ipv6.h>
rwlock_t lhash_lock ____cacheline_aligned;
atomic_t lhash_users;
wait_queue_head_t lhash_wait;
- kmem_cache_t *bind_bucket_cachep;
+ struct kmem_cache *bind_bucket_cachep;
};
static inline struct inet_ehash_bucket *inet_ehash_bucket(
}
extern struct inet_bind_bucket *
- inet_bind_bucket_create(kmem_cache_t *cachep,
+ inet_bind_bucket_create(struct kmem_cache *cachep,
struct inet_bind_hashbucket *head,
const unsigned short snum);
-extern void inet_bind_bucket_destroy(kmem_cache_t *cachep,
+extern void inet_bind_bucket_destroy(struct kmem_cache *cachep,
struct inet_bind_bucket *tb);
static inline int inet_bhashfn(const __u16 lport, const int bhash_size)
return 0;
}
-extern struct sock *__inet_lookup_listener(const struct hlist_head *head,
- const u32 daddr,
+
+extern struct sock *__inet_lookup_listener(struct inet_hashinfo *hashinfo,
+ const __be32 daddr,
const unsigned short hnum,
const int dif);
-/* Optimize the common listener case. */
-static inline struct sock *
- inet_lookup_listener(struct inet_hashinfo *hashinfo,
- const u32 daddr,
- const unsigned short hnum, const int dif)
+static inline struct sock *inet_lookup_listener(struct inet_hashinfo *hashinfo,
+ __be32 daddr, __be16 dport, int dif)
{
- struct sock *sk = NULL;
- const struct hlist_head *head;
-
- read_lock(&hashinfo->lhash_lock);
- head = &hashinfo->listening_hash[inet_lhashfn(hnum)];
- if (!hlist_empty(head)) {
- const struct inet_sock *inet = inet_sk((sk = __sk_head(head)));
-
- if (inet->num == hnum && !sk->sk_node.next &&
- inet_addr_match(sk->sk_nx_info, daddr, inet->rcv_saddr) &&
- (sk->sk_family == PF_INET || !ipv6_only_sock(sk)) &&
- !sk->sk_bound_dev_if)
- goto sherry_cache;
- sk = __inet_lookup_listener(head, daddr, hnum, dif);
- }
- if (sk) {
-sherry_cache:
- sock_hold(sk);
- }
- read_unlock(&hashinfo->lhash_lock);
- return sk;
+ return __inet_lookup_listener(hashinfo, daddr, ntohs(dport), dif);
}
/* Socket demux engine toys. */
+/* What happens here is ugly; there's a pair of adjacent fields in
+ struct inet_sock; __be16 dport followed by __u16 num. We want to
+ search by pair, so we combine the keys into a single 32bit value
+ and compare with 32bit value read from &...->dport. Let's at least
+ make sure that it's not mixed with anything else...
+ On 64bit targets we combine comparisons with pair of adjacent __be32
+ fields in the same way.
+*/
+typedef __u32 __bitwise __portpair;
#ifdef __BIG_ENDIAN
#define INET_COMBINED_PORTS(__sport, __dport) \
- (((__u32)(__sport) << 16) | (__u32)(__dport))
+ ((__force __portpair)(((__force __u32)(__be16)(__sport) << 16) | (__u32)(__dport)))
#else /* __LITTLE_ENDIAN */
#define INET_COMBINED_PORTS(__sport, __dport) \
- (((__u32)(__dport) << 16) | (__u32)(__sport))
+ ((__force __portpair)(((__u32)(__dport) << 16) | (__force __u32)(__be16)(__sport)))
#endif
#if (BITS_PER_LONG == 64)
+typedef __u64 __bitwise __addrpair;
#ifdef __BIG_ENDIAN
#define INET_ADDR_COOKIE(__name, __saddr, __daddr) \
- const __u64 __name = (((__u64)(__saddr)) << 32) | ((__u64)(__daddr));
+ const __addrpair __name = (__force __addrpair) ( \
+ (((__force __u64)(__be32)(__saddr)) << 32) | \
+ ((__force __u64)(__be32)(__daddr)));
#else /* __LITTLE_ENDIAN */
#define INET_ADDR_COOKIE(__name, __saddr, __daddr) \
- const __u64 __name = (((__u64)(__daddr)) << 32) | ((__u64)(__saddr));
+ const __addrpair __name = (__force __addrpair) ( \
+ (((__force __u64)(__be32)(__daddr)) << 32) | \
+ ((__force __u64)(__be32)(__saddr)));
#endif /* __BIG_ENDIAN */
#define INET_MATCH(__sk, __hash, __cookie, __saddr, __daddr, __ports, __dif)\
(((__sk)->sk_hash == (__hash)) && \
- ((*((__u64 *)&(inet_sk(__sk)->daddr))) == (__cookie)) && \
- ((*((__u32 *)&(inet_sk(__sk)->dport))) == (__ports)) && \
+ ((*((__addrpair *)&(inet_sk(__sk)->daddr))) == (__cookie)) && \
+ ((*((__portpair *)&(inet_sk(__sk)->dport))) == (__ports)) && \
(!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
#define INET_TW_MATCH(__sk, __hash, __cookie, __saddr, __daddr, __ports, __dif)\
(((__sk)->sk_hash == (__hash)) && \
- ((*((__u64 *)&(inet_twsk(__sk)->tw_daddr))) == (__cookie)) && \
- ((*((__u32 *)&(inet_twsk(__sk)->tw_dport))) == (__ports)) && \
+ ((*((__addrpair *)&(inet_twsk(__sk)->tw_daddr))) == (__cookie)) && \
+ ((*((__portpair *)&(inet_twsk(__sk)->tw_dport))) == (__ports)) && \
(!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
#else /* 32-bit arch */
#define INET_ADDR_COOKIE(__name, __saddr, __daddr)
(((__sk)->sk_hash == (__hash)) && \
(inet_sk(__sk)->daddr == (__saddr)) && \
(inet_sk(__sk)->rcv_saddr == (__daddr)) && \
- ((*((__u32 *)&(inet_sk(__sk)->dport))) == (__ports)) && \
+ ((*((__portpair *)&(inet_sk(__sk)->dport))) == (__ports)) && \
(!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
#define INET_TW_MATCH(__sk, __hash,__cookie, __saddr, __daddr, __ports, __dif) \
(((__sk)->sk_hash == (__hash)) && \
(inet_twsk(__sk)->tw_daddr == (__saddr)) && \
(inet_twsk(__sk)->tw_rcv_saddr == (__daddr)) && \
- ((*((__u32 *)&(inet_twsk(__sk)->tw_dport))) == (__ports)) && \
+ ((*((__portpair *)&(inet_twsk(__sk)->tw_dport))) == (__ports)) && \
(!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
#endif /* 64-bit arch */
*/
static inline struct sock *
__inet_lookup_established(struct inet_hashinfo *hashinfo,
- const u32 saddr, const u16 sport,
- const u32 daddr, const u16 hnum,
+ const __be32 saddr, const __be16 sport,
+ const __be32 daddr, const u16 hnum,
const int dif)
{
INET_ADDR_COOKIE(acookie, saddr, daddr)
- const __u32 ports = INET_COMBINED_PORTS(sport, hnum);
+ const __portpair ports = INET_COMBINED_PORTS(sport, hnum);
struct sock *sk;
const struct hlist_node *node;
/* Optimize here for direct hit, only listening connections can
goto out;
}
+static inline struct sock *
+ inet_lookup_established(struct inet_hashinfo *hashinfo,
+ const __be32 saddr, const __be16 sport,
+ const __be32 daddr, const __be16 dport,
+ const int dif)
+{
+ return __inet_lookup_established(hashinfo, saddr, sport, daddr,
+ ntohs(dport), dif);
+}
+
static inline struct sock *__inet_lookup(struct inet_hashinfo *hashinfo,
- const u32 saddr, const u16 sport,
- const u32 daddr, const u16 hnum,
+ const __be32 saddr, const __be16 sport,
+ const __be32 daddr, const __be16 dport,
const int dif)
{
+ u16 hnum = ntohs(dport);
struct sock *sk = __inet_lookup_established(hashinfo, saddr, sport, daddr,
hnum, dif);
- return sk ? : inet_lookup_listener(hashinfo, daddr, hnum, dif);
+ return sk ? : __inet_lookup_listener(hashinfo, daddr, hnum, dif);
}
static inline struct sock *inet_lookup(struct inet_hashinfo *hashinfo,
- const u32 saddr, const u16 sport,
- const u32 daddr, const u16 dport,
+ const __be32 saddr, const __be16 sport,
+ const __be32 daddr, const __be16 dport,
const int dif)
{
struct sock *sk;
local_bh_disable();
- sk = __inet_lookup(hashinfo, saddr, sport, daddr, ntohs(dport), dif);
+ sk = __inet_lookup(hashinfo, saddr, sport, daddr, dport, dif);
local_bh_enable();
return sk;
git://git.onelab.eu / linux-2.6.git / blobdiff