IKEv2 to plugin

for easy integration with ptoducts running their own Ike stack.
Without the VPP IKE plugin loaded, the product is free to handle
IKE packets as it pleases.

Change-Id: Id0839f4d58b797f4c2da0382eb499fc08b05f66f
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 155 insertions, 0 deletions

diff --git a/src/plugins/ikev2/ikev2_format.c b/src/plugins/ikev2/ikev2_format.c
new file mode 100644
index 00000000000..2b77d7e5945
--- /dev/null
+++ b/src/plugins/ikev2/ikev2_format.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <vnet/vnet.h>
+#include <vnet/api_errno.h>
+#include <vnet/ip/ip.h>
+#include <vnet/interface.h>
+
+#include <vnet/ipsec/ipsec.h>
+#include <plugins/ikev2/ikev2.h>
+#include <plugins/ikev2/ikev2_priv.h>
+
+u8 *
+format_ikev2_sa_transform (u8 * s, va_list * args)
+{
+  ikev2_sa_transform_t *tr = va_arg (*args, ikev2_sa_transform_t *);
+
+  if (!tr)
+    return s;
+
+  if (tr->type >= IKEV2_TRANSFORM_NUM_TYPES)
+    return s;
+
+  s = format (s, "%U:", format_ikev2_transform_type, tr->type);
+
+  switch (tr->type)
+    {
+    case IKEV2_TRANSFORM_TYPE_ENCR:
+      s = format (s, "%U", format_ikev2_transform_encr_type, tr->encr_type);
+      break;
+    case IKEV2_TRANSFORM_TYPE_PRF:
+      s = format (s, "%U", format_ikev2_transform_prf_type, tr->prf_type);
+      break;
+    case IKEV2_TRANSFORM_TYPE_INTEG:
+      s = format (s, "%U", format_ikev2_transform_integ_type, tr->integ_type);
+      break;
+    case IKEV2_TRANSFORM_TYPE_DH:
+      s = format (s, "%U", format_ikev2_transform_dh_type, tr->dh_type);
+      break;
+    case IKEV2_TRANSFORM_TYPE_ESN:
+      s = format (s, "%U", format_ikev2_transform_esn_type, tr->esn_type);
+      break;
+    default:
+      break;
+    }
+
+  if (tr->type == IKEV2_TRANSFORM_TYPE_ENCR &&
+      tr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC && tr->key_len)
+    s = format (s, "-%u", tr->key_len * 8);
+  else if (vec_len (tr->attrs) == 4 && tr->attrs[0] == 0x80
+	   && tr->attrs[1] == 0x0e)
+    s = format (s, "-%u", tr->attrs[2] * 256 + tr->attrs[3]);
+  else if (vec_len (tr->attrs))
+    s = format (s, "(unknown attr %U)", format_hex_bytes,
+		tr->attrs, vec_len (tr->attrs));
+
+  return s;
+}
+
+#define MACRO_FORMAT(lc)                                \
+u8 * format_ikev2_##lc (u8 * s, va_list * args)         \
+{                                                       \
+  u32 i = va_arg (*args, u32);                          \
+  char * t = 0;                                         \
+  switch (i) {                                          \
+        foreach_ikev2_##lc                              \
+      default:                                          \
+        return format (s, "unknown (%u)", i);           \
+    }                                                   \
+  s = format (s, "%s", t);                              \
+  return s;                                             \
+}
+
+#define MACRO_UNFORMAT(lc)                              \
+uword                                                   \
+unformat_ikev2_##lc (unformat_input_t * input,          \
+                     va_list * args)                    \
+{                                                       \
+  u32 * r = va_arg (*args, u32 *);                      \
+  if (0) ;                                              \
+  foreach_ikev2_##lc                                    \
+  else                                                  \
+    return 0;                                           \
+  return 1;                                             \
+}
+
+#define _(v,f,str) case IKEV2_AUTH_METHOD_##f: t = str; break;
+MACRO_FORMAT (auth_method)
+#undef _
+#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_AUTH_METHOD_##f;
+  MACRO_UNFORMAT (auth_method)
+#undef _
+#define _(v,f,str) case IKEV2_TRANSFORM_TYPE_##f: t = str; break;
+  MACRO_FORMAT (transform_type)
+#undef _
+#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_TYPE_##f;
+  MACRO_UNFORMAT (transform_type)
+#undef _
+#define _(v,f) case IKEV2_NOTIFY_MSG_##f: t = #f; break;
+  MACRO_FORMAT (notify_msg_type)
+#undef _
+#define _(v,f,str) case IKEV2_ID_TYPE_##f: t = str; break;
+  MACRO_FORMAT (id_type)
+#undef _
+#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_ID_TYPE_##f;
+  MACRO_UNFORMAT (id_type)
+#undef _
+#define _(v,f,str) case IKEV2_TRANSFORM_ENCR_TYPE_##f: t = str; break;
+  MACRO_FORMAT (transform_encr_type)
+#undef _
+#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_ENCR_TYPE_##f;
+  MACRO_UNFORMAT (transform_encr_type)
+#undef _
+#define _(v,f,str) case IKEV2_TRANSFORM_PRF_TYPE_##f: t = str; break;
+  MACRO_FORMAT (transform_prf_type)
+#undef _
+#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_PRF_TYPE_##f;
+  MACRO_UNFORMAT (transform_prf_type)
+#undef _
+#define _(v,f,str) case IKEV2_TRANSFORM_INTEG_TYPE_##f: t = str; break;
+  MACRO_FORMAT (transform_integ_type)
+#undef _
+#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_INTEG_TYPE_##f;
+  MACRO_UNFORMAT (transform_integ_type)
+#undef _
+#define _(v,f,str) case IKEV2_TRANSFORM_DH_TYPE_##f: t = str; break;
+  MACRO_FORMAT (transform_dh_type)
+#undef _
+#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_DH_TYPE_##f;
+  MACRO_UNFORMAT (transform_dh_type)
+#undef _
+#define _(v,f,str) case IKEV2_TRANSFORM_ESN_TYPE_##f: t = str; break;
+  MACRO_FORMAT (transform_esn_type)
+#undef _
+#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_ESN_TYPE_##f;
+  MACRO_UNFORMAT (transform_esn_type)
+#undef _
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */