1 files changed, 97 insertions, 0 deletions
diff --git a/src/spdk/intel-ipsec-mb/snow3g_iv.c b/src/spdk/intel-ipsec-mb/snow3g_iv.c
new file mode 100644
index 000000000..d1f48881c
--- /dev/null
+++ b/src/spdk/intel-ipsec-mb/snow3g_iv.c
@@ -0,0 +1,97 @@
+/*******************************************************************************
+  Copyright (c) 2019, Intel Corporation
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+      * Redistributions of source code must retain the above copyright notice,
+        this list of conditions and the following disclaimer.
+      * Redistributions in binary form must reproduce the above copyright
+        notice, this list of conditions and the following disclaimer in the
+        documentation and/or other materials provided with the distribution.
+      * Neither the name of Intel Corporation nor the names of its contributors
+        may be used to endorse or promote products derived from this software
+        without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#include <string.h>
+
+#include "intel-ipsec-mb.h"
+#include "include/wireless_common.h"
+
+int
+snow3g_f8_iv_gen(const uint32_t count, const uint8_t bearer,
+                 const uint8_t dir, void *iv_ptr)
+{
+        uint32_t *iv32 = (uint32_t *) iv_ptr;
+
+        if (iv_ptr == NULL)
+                return -1;
+
+        /* Bearer must contain 5 bits only */
+        if (bearer >= (1<<5))
+                return -1;
+
+        /* Direction must contain 1 bit only */
+        if (dir > 1)
+                return -1;
+        /**
+         * Parameters are passed in Little Endian format
+         * and reversed to generate the IV in Big Endian format
+         */
+        /* IV[3] = BEARER || DIRECTION || 0s */
+        iv32[3] = bswap4((bearer << 27) | (dir << 26));
+
+        /* IV[2] = COUNT */
+        iv32[2] = bswap4(count);
+
+        /* IV[1] = BEARER || DIRECTION || 0s */
+        iv32[1] = iv32[3];
+
+        /* IV[0] = COUNT */
+        iv32[0] = iv32[2];
+
+        return 0;
+}
+
+int
+snow3g_f9_iv_gen(const uint32_t count, const uint32_t fresh,
+                 const uint8_t dir, void *iv_ptr)
+{
+        uint32_t *iv32 = (uint32_t *) iv_ptr;
+
+        if (iv_ptr == NULL)
+                return -1;
+
+        /* Direction must contain 1 bit only */
+        if (dir > 1)
+                return -1;
+        /**
+         * Parameters are passed in Little Endian format
+         * and reversed to generate the IV in Big Endian format
+         */
+        /* IV[3] = FRESH ^ (DIRECTION[0] << 17) */
+        iv32[3] = bswap4(fresh ^ (dir << 15));
+
+        /* IV[2] = DIRECTION[0] ^ COUNT[0-31] */
+        iv32[2] = bswap4(count ^ (dir << 31));
+
+        /* IV[1] = FRESH */
+        iv32[1] = bswap4(fresh);
+
+        /* IV[0] = COUNT */
+        iv32[0] = bswap4(count);
+
+        return 0;
+}