X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fhash.c;h=b3d91563c4b5b013c3d5077b264236401f1eba72;hb=2b459b83afe20f644f801dbdeafb750c7dade5d1;hp=63b4784fc0add651896913fed79783386c46e96c;hpb=58fda1dab104041fc693032475ec4662c1a52849;p=openvswitch

diff --git a/lib/hash.c b/lib/hash.c
index 63b4784f..b3d91563 100644
--- a/lib/hash.c
+++ b/lib/hash.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2012 Nicira Networks.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,7 +30,7 @@ hash_words(const uint32_t *p, size_t n, uint32_t basis)
         a += p[0];
         b += p[1];
         c += p[2];
-        HASH_MIX(a, b, c);
+        hash_mix(&a, &b, &c);
         n -= 3;
         p += 3;
     }
@@ -44,7 +44,7 @@ hash_words(const uint32_t *p, size_t n, uint32_t basis)
         /* fall through */
     case 1:
         a += p[0];
-        HASH_FINAL(a, b, c);
+        hash_final(&a, &b, &c);
         /* fall through */
     case 0:
         break;
@@ -52,21 +52,24 @@ hash_words(const uint32_t *p, size_t n, uint32_t basis)
     return c;
 }
 
-/* Returns the hash of the pair of aligned 32-bit words at 'p', starting from
- * 'basis'. */
+/* Returns the hash of 'a', 'b', and 'c'. */
 uint32_t
-hash_2words(const uint32_t *p, uint32_t basis)
+hash_3words(uint32_t a, uint32_t b, uint32_t c)
 {
-    uint32_t a, b, c;
-
-    a = b = c = 0xdeadbeef + (2 << 2) + basis;
-    b += p[1];
-    a += p[0];
-    HASH_FINAL(a, b, c);
-
+    a += 0xdeadbeef;
+    b += 0xdeadbeef;
+    c += 0xdeadbeef;
+    hash_final(&a, &b, &c);
     return c;
 }
 
+/* Returns the hash of 'a' and 'b'. */
+uint32_t
+hash_2words(uint32_t a, uint32_t b)
+{
+    return hash_3words(a, b, 0);
+}
+
 /* Returns the hash of the 'n' bytes at 'p', starting from 'basis'. */
 uint32_t
 hash_bytes(const void *p_, size_t n, uint32_t basis)
@@ -82,7 +85,7 @@ hash_bytes(const void *p_, size_t n, uint32_t basis)
         a += tmp[0];
         b += tmp[1];
         c += tmp[2];
-        HASH_MIX(a, b, c);
+        hash_mix(&a, &b, &c);
         n -= sizeof tmp;
         p += sizeof tmp;
     }
@@ -93,7 +96,7 @@ hash_bytes(const void *p_, size_t n, uint32_t basis)
         a += tmp[0];
         b += tmp[1];
         c += tmp[2];
-        HASH_FINAL(a, b, c);
+        hash_final(&a, &b, &c);
     }
 
     return c;