moved Diffie-Hellman speed test to a standalone program

This reverts commit 1e6050bfae.

scripts/.gitignore

@@ -4,3 +4,4 @@ id2sql
 key2keyid
 keyid2sql
 thread_analysis
+dh_speed

scripts/Makefile.am

@@ -1,14 +1,18 @@
 INCLUDES = -I$(top_srcdir)/src/libstrongswan
 AM_CFLAGS = \
--DIPSEC_PLUGINDIR=\"${plugindir}\"
+-DIPSEC_PLUGINDIR=\"${plugindir}\" \
+-DSTRONGSWAN_CONF=\"${strongswan_conf}\"
 
-noinst_PROGRAMS = bin2array bin2sql id2sql key2keyid keyid2sql thread_analysis
+noinst_PROGRAMS = bin2array bin2sql id2sql key2keyid keyid2sql \
+	thread_analysis dh_speed
 bin2array_SOURCES = bin2array.c
 bin2sql_SOURCES = bin2sql.c
 id2sql_SOURCES = id2sql.c
 key2keyid_SOURCES = key2keyid.c
 keyid2sql_SOURCES = keyid2sql.c
 thread_analysis_SOURCES = thread_analysis.c
+dh_speed_SOURCES = dh_speed.c
 id2sql_LDADD = $(top_builddir)/src/libstrongswan/libstrongswan.la
 key2keyid_LDADD = $(top_builddir)/src/libstrongswan/libstrongswan.la
 keyid2sql_LDADD = $(top_builddir)/src/libstrongswan/libstrongswan.la
+dh_speed_LDADD = $(top_builddir)/src/libstrongswan/libstrongswan.la -lrt

scripts/dh_speed.c

@@ -0,0 +1,129 @@
+
+#include <stdio.h>
+#include <time.h>
+#include <library.h>
+#include <debug.h>
+#include <crypto/diffie_hellman.h>
+
+static void usage()
+{
+	printf("usage: dh_speed plugins rounds group1 [group2 [...]]\n");
+	exit(1);
+}
+
+struct {
+	char *name;
+	diffie_hellman_group_t group;
+} groups[] = {
+	{"modp768",		MODP_768_BIT},
+	{"modp1024",	MODP_1024_BIT},
+	{"modp1536",	MODP_1536_BIT},
+	{"modp2048",	MODP_2048_BIT},
+	{"modp3072",	MODP_3072_BIT},
+	{"modp4096",	MODP_4096_BIT},
+	{"modp6144",	MODP_6144_BIT},
+	{"modp8192",	MODP_8192_BIT},
+	{"ecp256",		ECP_256_BIT},
+	{"ecp384",		ECP_384_BIT},
+	{"ecp521",		ECP_521_BIT},
+	{"ecp192",		ECP_192_BIT},
+	{"ecp224",		ECP_224_BIT},
+};
+
+static void start_timing(struct timespec *start)
+{
+	clock_gettime(CLOCK_THREAD_CPUTIME_ID, start);
+}
+
+static double end_timing(struct timespec *start)
+{
+	struct timespec end;
+	
+	clock_gettime(CLOCK_THREAD_CPUTIME_ID, &end);
+	return (end.tv_nsec - start->tv_nsec) / 1000000000.0 +
+			(end.tv_sec - start->tv_sec) * 1.0;
+}
+
+static void run_test(diffie_hellman_group_t group, int rounds)
+{
+	diffie_hellman_t *l[rounds], *r;
+	chunk_t chunk;
+	struct timespec timing;
+	int round;
+	
+	r = lib->crypto->create_dh(lib->crypto, group);
+	if (!r)
+	{
+		printf("skipping %N, not supported\n",
+				diffie_hellman_group_names, group);
+		return;
+	}
+	
+	printf("%N:\t",
+			diffie_hellman_group_names, group);
+	
+	start_timing(&timing);
+	for (round = 0; round < rounds; round++)
+	{
+		l[round] = lib->crypto->create_dh(lib->crypto, group);
+	}
+	printf("A = g^a/s: %8.1f", rounds / end_timing(&timing));
+	
+	for (round = 0; round < rounds; round++)
+	{
+		l[round]->get_my_public_value(l[round], &chunk);
+		r->set_other_public_value(r, chunk);
+		chunk_free(&chunk);
+	}
+	
+	r->get_my_public_value(r, &chunk);
+	start_timing(&timing);
+	for (round = 0; round < rounds; round++)
+	{
+		l[round]->set_other_public_value(l[round], chunk);
+	}
+	printf(" | S = B^a/s: %8.1f\n", rounds / end_timing(&timing));
+	chunk_free(&chunk);
+	
+	for (round = 0; round < rounds; round++)
+	{
+		l[round]->destroy(l[round]);
+	}
+	r->destroy(r);
+}
+
+int main(int argc, char *argv[])
+{
+	int rounds, i, j;
+	
+	if (argc < 4)
+	{
+		usage();
+	}
+	
+	library_init(STRONGSWAN_CONF);
+	lib->plugins->load(lib->plugins, IPSEC_PLUGINDIR, argv[1]);
+	atexit(library_deinit);
+	
+	rounds = atoi(argv[2]);
+	
+	for (i = 3; i < argc; i++)
+	{
+		bool found = FALSE;
+		
+		for (j = 0; j < countof(groups); j++)
+		{
+			if (streq(groups[j].name, argv[i]))
+			{
+				run_test(groups[j].group, rounds);
+				found = TRUE;
+			}
+		}
+		if (!found)
+		{
+			printf("group %s not found\n", argv[i]);
+		}
+	}
+	return 0;
+}
+