ipsec: Changes to make ipsec encoder/decoders reusable by the plugins

Type: fix

Signed-off-by: Prashant Maheshwari <pmahesh2@cisco.com>
Change-Id: I81b937fc8cfec36f8fb5de711ffbb02f23f3664e
Signed-off-by: Prashant Maheshwari <pmahesh2@cisco.com>

1 files changed, 177 insertions, 0 deletions

diff --git a/src/vnet/ipsec/ipsec_types_api.c b/src/vnet/ipsec/ipsec_types_api.c
new file mode 100644
index 00000000000..0c59e48c645
--- /dev/null
+++ b/src/vnet/ipsec/ipsec_types_api.c
@@ -0,0 +1,177 @@
+/*
+ * Copyright (c) 2019 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/ipsec/ipsec_types_api.h>
+#include <vlibapi/api_types.h>
+
+#define vl_typedefs		/* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
+int
+ipsec_proto_decode (vl_api_ipsec_proto_t in, ipsec_protocol_t * out)
+{
+  in = clib_net_to_host_u32 (in);
+
+  switch (in)
+    {
+    case IPSEC_API_PROTO_ESP:
+      *out = IPSEC_PROTOCOL_ESP;
+      return (0);
+    case IPSEC_API_PROTO_AH:
+      *out = IPSEC_PROTOCOL_AH;
+      return (0);
+    }
+  return (VNET_API_ERROR_INVALID_PROTOCOL);
+}
+
+vl_api_ipsec_proto_t
+ipsec_proto_encode (ipsec_protocol_t p)
+{
+  switch (p)
+    {
+    case IPSEC_PROTOCOL_ESP:
+      return clib_host_to_net_u32 (IPSEC_API_PROTO_ESP);
+    case IPSEC_PROTOCOL_AH:
+      return clib_host_to_net_u32 (IPSEC_API_PROTO_AH);
+    }
+  return (VNET_API_ERROR_UNIMPLEMENTED);
+}
+
+int
+ipsec_crypto_algo_decode (vl_api_ipsec_crypto_alg_t in,
+			  ipsec_crypto_alg_t * out)
+{
+  in = clib_net_to_host_u32 (in);
+
+  switch (in)
+    {
+#define _(v,f,s) case IPSEC_API_CRYPTO_ALG_##f: \
+      *out = IPSEC_CRYPTO_ALG_##f;              \
+      return (0);
+      foreach_ipsec_crypto_alg
+#undef _
+    }
+  return (VNET_API_ERROR_INVALID_ALGORITHM);
+}
+
+vl_api_ipsec_crypto_alg_t
+ipsec_crypto_algo_encode (ipsec_crypto_alg_t c)
+{
+  switch (c)
+    {
+#define _(v,f,s) case IPSEC_CRYPTO_ALG_##f:                     \
+      return clib_host_to_net_u32(IPSEC_API_CRYPTO_ALG_##f);
+      foreach_ipsec_crypto_alg
+#undef _
+    case IPSEC_CRYPTO_N_ALG:
+      break;
+    }
+  ASSERT (0);
+  return (VNET_API_ERROR_UNIMPLEMENTED);
+}
+
+int
+ipsec_integ_algo_decode (vl_api_ipsec_integ_alg_t in, ipsec_integ_alg_t * out)
+{
+  in = clib_net_to_host_u32 (in);
+
+  switch (in)
+    {
+#define _(v,f,s) case IPSEC_API_INTEG_ALG_##f:  \
+      *out = IPSEC_INTEG_ALG_##f;               \
+      return (0);
+      foreach_ipsec_integ_alg
+#undef _
+    }
+  return (VNET_API_ERROR_INVALID_ALGORITHM);
+}
+
+vl_api_ipsec_integ_alg_t
+ipsec_integ_algo_encode (ipsec_integ_alg_t i)
+{
+  switch (i)
+    {
+#define _(v,f,s) case IPSEC_INTEG_ALG_##f:                      \
+      return (clib_host_to_net_u32(IPSEC_API_INTEG_ALG_##f));
+      foreach_ipsec_integ_alg
+#undef _
+    case IPSEC_INTEG_N_ALG:
+      break;
+    }
+  ASSERT (0);
+  return (VNET_API_ERROR_UNIMPLEMENTED);
+}
+
+void
+ipsec_key_decode (const vl_api_key_t * key, ipsec_key_t * out)
+{
+  ipsec_mk_key (out, key->data, key->length);
+}
+
+void
+ipsec_key_encode (const ipsec_key_t * in, vl_api_key_t * out)
+{
+  out->length = in->len;
+  clib_memcpy (out->data, in->data, out->length);
+}
+
+ipsec_sa_flags_t
+ipsec_sa_flags_decode (vl_api_ipsec_sad_flags_t in)
+{
+  ipsec_sa_flags_t flags = IPSEC_SA_FLAG_NONE;
+  in = clib_net_to_host_u32 (in);
+
+  if (in & IPSEC_API_SAD_FLAG_USE_ESN)
+    flags |= IPSEC_SA_FLAG_USE_ESN;
+  if (in & IPSEC_API_SAD_FLAG_USE_ANTI_REPLAY)
+    flags |= IPSEC_SA_FLAG_USE_ANTI_REPLAY;
+  if (in & IPSEC_API_SAD_FLAG_IS_TUNNEL)
+    flags |= IPSEC_SA_FLAG_IS_TUNNEL;
+  if (in & IPSEC_API_SAD_FLAG_IS_TUNNEL_V6)
+    flags |= IPSEC_SA_FLAG_IS_TUNNEL_V6;
+  if (in & IPSEC_API_SAD_FLAG_UDP_ENCAP)
+    flags |= IPSEC_SA_FLAG_UDP_ENCAP;
+
+  return (flags);
+}
+
+vl_api_ipsec_sad_flags_t
+ipsec_sad_flags_encode (const ipsec_sa_t * sa)
+{
+  vl_api_ipsec_sad_flags_t flags = IPSEC_API_SAD_FLAG_NONE;
+
+  if (ipsec_sa_is_set_USE_ESN (sa))
+    flags |= IPSEC_API_SAD_FLAG_USE_ESN;
+  if (ipsec_sa_is_set_USE_ANTI_REPLAY (sa))
+    flags |= IPSEC_API_SAD_FLAG_USE_ANTI_REPLAY;
+  if (ipsec_sa_is_set_IS_TUNNEL (sa))
+    flags |= IPSEC_API_SAD_FLAG_IS_TUNNEL;
+  if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa))
+    flags |= IPSEC_API_SAD_FLAG_IS_TUNNEL_V6;
+  if (ipsec_sa_is_set_UDP_ENCAP (sa))
+    flags |= IPSEC_API_SAD_FLAG_UDP_ENCAP;
+
+  return clib_host_to_net_u32 (flags);
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */