Update from upstream with manual merge of Yasunori Goto's

changes to swiotlb.c made in commit 281dd25cdc0d6903929b79183816d151ea626341
since this file has been moved from arch/ia64/lib/swiotlb.c to
lib/swiotlb.c

Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 10 insertions, 11 deletions

diff --git a/include/net/inet6_hashtables.h b/include/net/inet6_hashtables.h
index 03df3b157960..5a2beed5a770 100644
--- a/include/net/inet6_hashtables.h
+++ b/include/net/inet6_hashtables.h
@@ -26,19 +26,18 @@
 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 u16 fport)
 {
-        int hashent = (lport ^ fport);
+        unsigned int hashent = (lport ^ fport);
 
         hashent ^= (laddr->s6_addr32[3] ^ faddr->s6_addr32[3]);
         hashent ^= hashent >> 16;
         hashent ^= hashent >> 8;
-        return (hashent & (ehash_size - 1));
+        return hashent;
 }
 
-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);
@@ -46,7 +45,7 @@ static inline int inet6_sk_ehashfn(const struct sock *sk, const int ehash_size)
         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);
+        return inet6_ehashfn(laddr, lport, faddr, fport);
 }
 
 /*
@@ -69,14 +68,14 @@ static inline struct sock *
         /* 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];
+        unsigned int hash = inet6_ehashfn(daddr, hnum, saddr, sport);
+        struct inet_ehash_bucket *head = inet_ehash_bucket(hashinfo, hash);
 
+        prefetch(head->chain.first);
         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))
+                if (INET6_MATCH(sk, hash, saddr, daddr, ports, dif))
                         goto hit; /* You sunk my battleship! */
         }
         /* Must check for a TIME_WAIT'er before going to listener hash. */