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-rw-r--r--target/linux/generic/files/crypto/ocf/ocfnull/Makefile12
-rw-r--r--target/linux/generic/files/crypto/ocf/ocfnull/ocfnull.c203
2 files changed, 215 insertions, 0 deletions
diff --git a/target/linux/generic/files/crypto/ocf/ocfnull/Makefile b/target/linux/generic/files/crypto/ocf/ocfnull/Makefile
new file mode 100644
index 000000000..044bcacb7
--- /dev/null
+++ b/target/linux/generic/files/crypto/ocf/ocfnull/Makefile
@@ -0,0 +1,12 @@
+# for SGlinux builds
+-include $(ROOTDIR)/modules/.config
+
+obj-$(CONFIG_OCF_OCFNULL) += ocfnull.o
+
+obj ?= .
+EXTRA_CFLAGS += -I$(obj)/..
+
+ifdef TOPDIR
+-include $(TOPDIR)/Rules.make
+endif
+
diff --git a/target/linux/generic/files/crypto/ocf/ocfnull/ocfnull.c b/target/linux/generic/files/crypto/ocf/ocfnull/ocfnull.c
new file mode 100644
index 000000000..a6b76cdae
--- /dev/null
+++ b/target/linux/generic/files/crypto/ocf/ocfnull/ocfnull.c
@@ -0,0 +1,203 @@
+/*
+ * An OCF module for determining the cost of crypto versus the cost of
+ * IPSec processing outside of OCF. This modules gives us the effect of
+ * zero cost encryption, of course you will need to run it at both ends
+ * since it does no crypto at all.
+ *
+ * Written by David McCullough <david_mccullough@mcafee.com>
+ * Copyright (C) 2006-2010 David McCullough
+ *
+ * LICENSE TERMS
+ *
+ * The free distribution and use of this software in both source and binary
+ * form is allowed (with or without changes) provided that:
+ *
+ * 1. distributions of this source code include the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ *
+ * 2. distributions in binary form include the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other associated materials;
+ *
+ * 3. the copyright holder's name is not used to endorse products
+ * built using this software without specific written permission.
+ *
+ * ALTERNATIVELY, provided that this notice is retained in full, this product
+ * may be distributed under the terms of the GNU General Public License (GPL),
+ * in which case the provisions of the GPL apply INSTEAD OF those given above.
+ *
+ * DISCLAIMER
+ *
+ * This software is provided 'as is' with no explicit or implied warranties
+ * in respect of its properties, including, but not limited to, correctness
+ * and/or fitness for purpose.
+ */
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/crypto.h>
+#include <linux/interrupt.h>
+
+#include <cryptodev.h>
+#include <uio.h>
+
+static int32_t null_id = -1;
+static u_int32_t null_sesnum = 0;
+
+static int null_process(device_t, struct cryptop *, int);
+static int null_newsession(device_t, u_int32_t *, struct cryptoini *);
+static int null_freesession(device_t, u_int64_t);
+
+#define debug ocfnull_debug
+int ocfnull_debug = 0;
+module_param(ocfnull_debug, int, 0644);
+MODULE_PARM_DESC(ocfnull_debug, "Enable debug");
+
+/*
+ * dummy device structure
+ */
+
+static struct {
+ softc_device_decl sc_dev;
+} nulldev;
+
+static device_method_t null_methods = {
+ /* crypto device methods */
+ DEVMETHOD(cryptodev_newsession, null_newsession),
+ DEVMETHOD(cryptodev_freesession,null_freesession),
+ DEVMETHOD(cryptodev_process, null_process),
+};
+
+/*
+ * Generate a new software session.
+ */
+static int
+null_newsession(device_t arg, u_int32_t *sid, struct cryptoini *cri)
+{
+ dprintk("%s()\n", __FUNCTION__);
+ if (sid == NULL || cri == NULL) {
+ dprintk("%s,%d - EINVAL\n", __FILE__, __LINE__);
+ return EINVAL;
+ }
+
+ if (null_sesnum == 0)
+ null_sesnum++;
+ *sid = null_sesnum++;
+ return 0;
+}
+
+
+/*
+ * Free a session.
+ */
+static int
+null_freesession(device_t arg, u_int64_t tid)
+{
+ u_int32_t sid = CRYPTO_SESID2LID(tid);
+
+ dprintk("%s()\n", __FUNCTION__);
+ if (sid > null_sesnum) {
+ dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__);
+ return EINVAL;
+ }
+
+ /* Silently accept and return */
+ if (sid == 0)
+ return 0;
+ return 0;
+}
+
+
+/*
+ * Process a request.
+ */
+static int
+null_process(device_t arg, struct cryptop *crp, int hint)
+{
+ unsigned int lid;
+
+ dprintk("%s()\n", __FUNCTION__);
+
+ /* Sanity check */
+ if (crp == NULL) {
+ dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__);
+ return EINVAL;
+ }
+
+ crp->crp_etype = 0;
+
+ if (crp->crp_desc == NULL || crp->crp_buf == NULL) {
+ dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__);
+ crp->crp_etype = EINVAL;
+ goto done;
+ }
+
+ /*
+ * find the session we are using
+ */
+
+ lid = crp->crp_sid & 0xffffffff;
+ if (lid >= null_sesnum || lid == 0) {
+ crp->crp_etype = ENOENT;
+ dprintk("%s,%d: ENOENT\n", __FILE__, __LINE__);
+ goto done;
+ }
+
+done:
+ crypto_done(crp);
+ return 0;
+}
+
+
+/*
+ * our driver startup and shutdown routines
+ */
+
+static int
+null_init(void)
+{
+ dprintk("%s(%p)\n", __FUNCTION__, null_init);
+
+ memset(&nulldev, 0, sizeof(nulldev));
+ softc_device_init(&nulldev, "ocfnull", 0, null_methods);
+
+ null_id = crypto_get_driverid(softc_get_device(&nulldev),
+ CRYPTOCAP_F_HARDWARE);
+ if (null_id < 0)
+ panic("ocfnull: crypto device cannot initialize!");
+
+#define REGISTER(alg) \
+ crypto_register(null_id,alg,0,0)
+ REGISTER(CRYPTO_DES_CBC);
+ REGISTER(CRYPTO_3DES_CBC);
+ REGISTER(CRYPTO_RIJNDAEL128_CBC);
+ REGISTER(CRYPTO_MD5);
+ REGISTER(CRYPTO_SHA1);
+ REGISTER(CRYPTO_MD5_HMAC);
+ REGISTER(CRYPTO_SHA1_HMAC);
+#undef REGISTER
+
+ return 0;
+}
+
+static void
+null_exit(void)
+{
+ dprintk("%s()\n", __FUNCTION__);
+ crypto_unregister_all(null_id);
+ null_id = -1;
+}
+
+module_init(null_init);
+module_exit(null_exit);
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("David McCullough <david_mccullough@mcafee.com>");
+MODULE_DESCRIPTION("ocfnull - claims a lot but does nothing");