From d39d41fbda2ec86ea2bac27308eb4fb16ecc4702 Mon Sep 17 00:00:00 2001
From: Jan Moskyto Matejka <mq@ucw.cz>
Date: Fri, 13 May 2016 13:46:46 +0200
Subject: [PATCH] Hash: Fix of previous commit

---
 lib/hash.h     | 17 +++++++++--------
 nest/rt-attr.c |  5 +++--
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/lib/hash.h b/lib/hash.h
index b86a2eb1..c2fd8bca 100644
--- a/lib/hash.h
+++ b/lib/hash.h
@@ -178,34 +178,35 @@
 
 #define HASH_WALK_FILTER_END } while (0)
 
-typedef mem_hash_t  u64;
-
 static inline void
-mem_hash_init(mem_hash_t *h)
+mem_hash_init(u64 *h)
 {
   *h = 0x001047d54778bcafULL;
 }
 
 static inline void
-mem_hash_mix(mem_hash_t *h, void *p, int s)
+mem_hash_mix(u64 *h, void *p, int s)
 {
   const u64 multiplier = 0xb38bc09a61202731ULL;
   const char *pp = p;
   uint i;
-  for (i=0; i<s; i++)
+  for (i=0; i<s/4; i++)
+    *h = *h * multiplier + ((const u32 *)pp)[i];
+  
+  for (i=s & ~0x3; i<s; i++)
     *h = *h * multiplier + pp[i];
 }
 
 static inline uint
-mem_hash_value(mem_hash_t *h)
+mem_hash_value(u64 *h)
 {
-  return ((value >> 32) ^ (value & 0xffffffff));
+  return ((*h >> 32) ^ (*h & 0xffffffff));
 }
 
 static inline uint
 mem_hash(void *p, int s)
 {
-  static mem_hash_t h;
+  static u64 h;
   mem_hash_init(&h);
   mem_hash_mix(&h, p, s);
   return mem_hash_value(&h);
diff --git a/nest/rt-attr.c b/nest/rt-attr.c
index 62340530..6ec69a7f 100644
--- a/nest/rt-attr.c
+++ b/nest/rt-attr.c
@@ -946,9 +946,9 @@ rta_alloc_hash(void)
 static inline uint
 rta_hash(rta *a)
 {
-  mem_hash_t h;
+  u64 h;
   mem_hash_init(&h);
-#define MIX(f) mem_hash_mix(&h, &(rta->f), sizeof(rta->f));
+#define MIX(f) mem_hash_mix(&h, &(a->f), sizeof(a->f));
   MIX(src);
   MIX(hostentry);
   MIX(iface);
@@ -961,6 +961,7 @@ rta_hash(rta *a)
   MIX(dest);
   MIX(flags);
   MIX(aflags);
+#undef MIX
 
   return mem_hash_value(&h) ^ mpnh_hash(a->nexthops) ^ ea_hash(a->eattrs);
 }