X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Fnet%2Finet6_hashtables.h;h=668056b4bb0b9982b249b96bf8c33ceb5435c912;hb=7699acd1341c63fdbcfc56994fb2989ec59d2a43;hp=03df3b157960cb711bccf0d44fab11127dde1b3b;hpb=c0d6f9663b30a09ed725229b2d50391268c8538e;p=linux-2.6-omap-h63xx.git

diff --git a/include/net/inet6_hashtables.h b/include/net/inet6_hashtables.h
index 03df3b15796..668056b4bb0 100644
--- a/include/net/inet6_hashtables.h
+++ b/include/net/inet6_hashtables.h
@@ -14,93 +14,55 @@
 #ifndef _INET6_HASHTABLES_H
 #define _INET6_HASHTABLES_H
 
-#include <linux/config.h>
 
 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
 #include <linux/in6.h>
 #include <linux/ipv6.h>
 #include <linux/types.h>
+#include <linux/jhash.h>
+
+#include <net/inet_sock.h>
 
 #include <net/ipv6.h>
 
 struct inet_hashinfo;
 
 /* I have no idea if this is a good hash for v6 or not. -DaveM */
-static inline int inet6_ehashfn(const struct in6_addr *laddr, const u16 lport,
-				const struct in6_addr *faddr, const u16 fport,
-				const int ehash_size)
+static inline unsigned int inet6_ehashfn(const struct in6_addr *laddr, const u16 lport,
+				const struct in6_addr *faddr, const __be16 fport)
 {
-	int hashent = (lport ^ fport);
+	u32 ports = (lport ^ (__force u16)fport);
 
-	hashent ^= (laddr->s6_addr32[3] ^ faddr->s6_addr32[3]);
-	hashent ^= hashent >> 16;
-	hashent ^= hashent >> 8;
-	return (hashent & (ehash_size - 1));
+	return jhash_3words((__force u32)laddr->s6_addr32[3],
+			    (__force u32)faddr->s6_addr32[3],
+			    ports, inet_ehash_secret);
 }
 
-static inline int inet6_sk_ehashfn(const struct sock *sk, const int ehash_size)
+static inline int inet6_sk_ehashfn(const struct sock *sk)
 {
 	const struct inet_sock *inet = inet_sk(sk);
 	const struct ipv6_pinfo *np = inet6_sk(sk);
 	const struct in6_addr *laddr = &np->rcv_saddr;
 	const struct in6_addr *faddr = &np->daddr;
 	const __u16 lport = inet->num;
-	const __u16 fport = inet->dport;
-	return inet6_ehashfn(laddr, lport, faddr, fport, ehash_size);
+	const __be16 fport = inet->dport;
+	return inet6_ehashfn(laddr, lport, faddr, fport);
 }
 
+extern void __inet6_hash(struct inet_hashinfo *hashinfo, struct sock *sk);
+
 /*
  * Sockets in TCP_CLOSE state are _always_ taken out of the hash, so
  * we need not check it for TCP lookups anymore, thanks Alexey. -DaveM
  *
  * The sockhash lock must be held as a reader here.
  */
-static inline struct sock *
-		__inet6_lookup_established(struct inet_hashinfo *hashinfo,
+extern struct sock *__inet6_lookup_established(struct inet_hashinfo *hashinfo,
 					   const struct in6_addr *saddr,
-					   const u16 sport,
+					   const __be16 sport,
 					   const struct in6_addr *daddr,
 					   const u16 hnum,
-					   const int dif)
-{
-	struct sock *sk;
-	const struct hlist_node *node;
-	const __u32 ports = INET_COMBINED_PORTS(sport, hnum);
-	/* Optimize here for direct hit, only listening connections can
-	 * have wildcards anyways.
-	 */
-	const int hash = inet6_ehashfn(daddr, hnum, saddr, sport,
-				       hashinfo->ehash_size);
-	struct inet_ehash_bucket *head = &hashinfo->ehash[hash];
-
-	read_lock(&head->lock);
-	sk_for_each(sk, node, &head->chain) {
-		/* For IPV6 do the cheaper port and family tests first. */
-		if (INET6_MATCH(sk, saddr, daddr, ports, dif))
-			goto hit; /* You sunk my battleship! */
-	}
-	/* Must check for a TIME_WAIT'er before going to listener hash. */
-	sk_for_each(sk, node, &(head + hashinfo->ehash_size)->chain) {
-		const struct inet_timewait_sock *tw = inet_twsk(sk);
-
-		if(*((__u32 *)&(tw->tw_dport))	== ports	&&
-		   sk->sk_family		== PF_INET6) {
-			const struct tcp6_timewait_sock *tcp6tw = tcp6_twsk(sk);
-
-			if (ipv6_addr_equal(&tcp6tw->tw_v6_daddr, saddr)	&&
-			    ipv6_addr_equal(&tcp6tw->tw_v6_rcv_saddr, daddr)	&&
-			    (!sk->sk_bound_dev_if || sk->sk_bound_dev_if == dif))
-				goto hit;
-		}
-	}
-	read_unlock(&head->lock);
-	return NULL;
-
-hit:
-	sock_hold(sk);
-	read_unlock(&head->lock);
-	return sk;
-}
+					   const int dif);
 
 extern struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo,
 					  const struct in6_addr *daddr,
@@ -109,7 +71,7 @@ extern struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo,
 
 static inline struct sock *__inet6_lookup(struct inet_hashinfo *hashinfo,
 					  const struct in6_addr *saddr,
-					  const u16 sport,
+					  const __be16 sport,
 					  const struct in6_addr *daddr,
 					  const u16 hnum,
 					  const int dif)
@@ -123,8 +85,8 @@ static inline struct sock *__inet6_lookup(struct inet_hashinfo *hashinfo,
 }
 
 extern struct sock *inet6_lookup(struct inet_hashinfo *hashinfo,
-				 const struct in6_addr *saddr, const u16 sport,
-				 const struct in6_addr *daddr, const u16 dport,
+				 const struct in6_addr *saddr, const __be16 sport,
+				 const struct in6_addr *daddr, const __be16 dport,
 				 const int dif);
 #endif /* defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) */
 #endif /* _INET6_HASHTABLES_H */