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Describe dummy test model. Work on OpenFlow intro.
[openvswitch]
/
lib
/
random.c
diff --git
a/lib/random.c
b/lib/random.c
index 7f892514ce09534842984cf8856698be06d7162c..3ea65d59cadf967ab5854c04969055596b116440 100644
(file)
--- a/
lib/random.c
+++ b/
lib/random.c
@@
-1,5
+1,5
@@
/*
/*
- * Copyright (c) 2008, 2009, 2010
Nicira Networks
.
+ * Copyright (c) 2008, 2009, 2010
, 2011, 2012 Nicira, Inc
.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@
-17,11
+17,13
@@
#include <config.h>
#include "random.h"
#include <config.h>
#include "random.h"
+#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <sys/time.h>
#include "entropy.h"
#include <errno.h>
#include <stdlib.h>
#include <sys/time.h>
#include "entropy.h"
+#include "timeval.h"
#include "util.h"
/* This is the 32-bit PRNG recommended in G. Marsaglia, "Xorshift RNGs",
#include "util.h"
/* This is the 32-bit PRNG recommended in G. Marsaglia, "Xorshift RNGs",
@@
-47,15
+49,20
@@
random_init(void)
struct timeval tv;
uint32_t entropy;
struct timeval tv;
uint32_t entropy;
- if (gettimeofday(&tv, NULL) < 0) {
- ovs_fatal(errno, "gettimeofday");
- }
+ xgettimeofday(&tv);
get_entropy_or_die(&entropy, 4);
seed = tv.tv_sec ^ tv.tv_usec ^ entropy;
}
}
get_entropy_or_die(&entropy, 4);
seed = tv.tv_sec ^ tv.tv_usec ^ entropy;
}
}
+void
+random_set_seed(uint32_t seed_)
+{
+ assert(seed_);
+ seed = seed_;
+}
+
void
random_bytes(void *p_, size_t n)
{
void
random_bytes(void *p_, size_t n)
{
@@
-93,6
+100,18
@@
random_uint32(void)
return random_next();
}
return random_next();
}
+uint64_t
+random_uint64(void)
+{
+ uint64_t x;
+
+ random_init();
+
+ x = random_next();
+ x |= (uint64_t) random_next() << 32;
+ return x;
+}
+
int
random_range(int max)
{
int
random_range(int max)
{