ipsec: ipsec-tun protect

please consult the new tunnel proposal at:
  https://wiki.fd.io/view/VPP/IPSec

Type: feature

Change-Id: I52857fc92ae068b85f59be08bdbea1bd5932e291
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 114 insertions, 0 deletions

diff --git a/src/vnet/ipsec/ipsec_tun.h b/src/vnet/ipsec/ipsec_tun.h
new file mode 100644
index 00000000000..be5cef9a8fc
--- /dev/null
+++ b/src/vnet/ipsec/ipsec_tun.h
@@ -0,0 +1,114 @@
+/*
+ * ipsec_tun.h : IPSEC tunnel protection
+ *
+ * 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/ipsec/ipsec.h>
+
+typedef enum ipsec_protect_flags_t_
+{
+  IPSEC_PROTECT_L2 = (1 << 0),
+  IPSEC_PROTECT_ENCAPED = (1 << 1),
+} __clib_packed ipsec_protect_flags_t;
+
+typedef struct ipsec_ep_t_
+{
+  ip46_address_t src;
+  ip46_address_t dst;
+} ipsec_ep_t;
+
+typedef struct ipsec_tun_protect_t_
+{
+  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+  u32 itp_out_sa;
+
+  /* not using a vector since we want the memory inline
+   * with this struct */
+  u32 itp_n_sa_in;
+  u32 itp_in_sas[4];
+
+  u32 itp_sw_if_index;
+
+  ipsec_ep_t itp_crypto;
+
+  ipsec_protect_flags_t itp_flags;
+
+  ipsec_ep_t itp_tun;
+
+} ipsec_tun_protect_t;
+
+#define FOR_EACH_IPSEC_PROTECT_INPUT_SAI(_itp, _sai, body) \
+{                                                          \
+  u32 __ii;                                                \
+  for (__ii = 0; __ii < _itp->itp_n_sa_in; __ii++) {       \
+    _sai = itp->itp_in_sas[__ii];                          \
+    body;                                                  \
+  }                                                        \
+}
+#define FOR_EACH_IPSEC_PROTECT_INPUT_SA(_itp, _sa, body)   \
+{                                                          \
+  u32 __ii;                                                \
+  for (__ii = 0; __ii < _itp->itp_n_sa_in; __ii++) {       \
+    _sa = ipsec_sa_get(itp->itp_in_sas[__ii]);             \
+    body;                                                  \
+  }                                                        \
+}
+
+extern int ipsec_tun_protect_update (u32 sw_if_index, u32 sa_out,
+				     u32 sa_ins[2]);
+extern int ipsec_tun_protect_del (u32 sw_if_index);
+
+typedef walk_rc_t (*ipsec_tun_protect_walk_cb_t) (index_t itpi, void *arg);
+extern void ipsec_tun_protect_walk (ipsec_tun_protect_walk_cb_t fn,
+				    void *cttx);
+extern index_t ipsec_tun_protect_find (u32 sw_if_index);
+
+extern u8 *format_ipsec_tun_protect (u8 * s, va_list * args);
+
+// FIXME
+extern vlib_node_registration_t ipsec4_tun_input_node;
+extern vlib_node_registration_t ipsec6_tun_input_node;
+
+/*
+ * DP API
+ */
+extern ipsec_tun_protect_t *ipsec_protect_pool;
+
+typedef struct ipsec_tun_lkup_result_t_
+{
+  union
+  {
+    struct
+    {
+      u32 tun_index;
+      u32 sa_index;
+    };
+    u64 as_u64;
+  };
+} ipsec_tun_lkup_result_t;
+
+always_inline ipsec_tun_protect_t *
+ipsec_tun_protect_get (u32 index)
+{
+  return (pool_elt_at_index (ipsec_protect_pool, index));
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */