API refactoring : ipsec-gre
[vpp.git] / vnet / vnet / ipsec-gre / ipsec_gre_api.c
diff --git a/vnet/vnet/ipsec-gre/ipsec_gre_api.c b/vnet/vnet/ipsec-gre/ipsec_gre_api.c
new file mode 100644 (file)
index 0000000..a7ea149
--- /dev/null
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+/*
+ *------------------------------------------------------------------
+ * ipsec_gre_api.c - ipsec_gre api
+ *
+ * Copyright (c) 2016 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 <vlibmemory/api.h>
+
+#include <vnet/interface.h>
+#include <vnet/api_errno.h>
+#include <vnet/ipsec-gre/ipsec_gre.h>
+
+#include <vnet/vnet_msg_enum.h>
+
+#define vl_typedefs            /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
+#define vl_endianfun           /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <vnet/vnet_all_api_h.h>
+#undef vl_printfun
+
+#include <vlibapi/api_helper_macros.h>
+
+#define foreach_vpe_api_msg                             \
+_(IPSEC_GRE_ADD_DEL_TUNNEL, ipsec_gre_add_del_tunnel)                   \
+_(IPSEC_GRE_TUNNEL_DUMP, ipsec_gre_tunnel_dump)
+
+static void
+vl_api_ipsec_gre_add_del_tunnel_t_handler (vl_api_ipsec_gre_add_del_tunnel_t *
+                                          mp)
+{
+  vl_api_ipsec_gre_add_del_tunnel_reply_t *rmp;
+  int rv = 0;
+  vnet_ipsec_gre_add_del_tunnel_args_t _a, *a = &_a;
+  u32 sw_if_index = ~0;
+
+  /* Check src & dst are different */
+  if (memcmp (mp->src_address, mp->dst_address, 4) == 0)
+    {
+      rv = VNET_API_ERROR_SAME_SRC_DST;
+      goto out;
+    }
+
+  memset (a, 0, sizeof (*a));
+
+  /* ip addresses sent in network byte order */
+  clib_memcpy (&(a->src), mp->src_address, 4);
+  clib_memcpy (&(a->dst), mp->dst_address, 4);
+  a->is_add = mp->is_add;
+  a->lsa = ntohl (mp->local_sa_id);
+  a->rsa = ntohl (mp->remote_sa_id);
+
+  rv = vnet_ipsec_gre_add_del_tunnel (a, &sw_if_index);
+
+out:
+    /* *INDENT-OFF* */
+    REPLY_MACRO2(VL_API_GRE_ADD_DEL_TUNNEL_REPLY,
+    ({
+        rmp->sw_if_index = ntohl (sw_if_index);
+    }));
+    /* *INDENT-ON* */
+}
+
+static void send_ipsec_gre_tunnel_details
+  (ipsec_gre_tunnel_t * t, unix_shared_memory_queue_t * q, u32 context)
+{
+  vl_api_ipsec_gre_tunnel_details_t *rmp;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id = ntohs (VL_API_IPSEC_GRE_TUNNEL_DETAILS);
+  clib_memcpy (rmp->src_address, &(t->tunnel_src), 4);
+  clib_memcpy (rmp->dst_address, &(t->tunnel_dst), 4);
+  rmp->sw_if_index = htonl (t->sw_if_index);
+  rmp->local_sa_id = htonl (t->local_sa_id);
+  rmp->remote_sa_id = htonl (t->remote_sa_id);
+  rmp->context = context;
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void vl_api_ipsec_gre_tunnel_dump_t_handler
+  (vl_api_ipsec_gre_tunnel_dump_t * mp)
+{
+  unix_shared_memory_queue_t *q;
+  ipsec_gre_main_t *igm = &ipsec_gre_main;
+  ipsec_gre_tunnel_t *t;
+  u32 sw_if_index;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    {
+      return;
+    }
+
+  sw_if_index = ntohl (mp->sw_if_index);
+
+  if (~0 == sw_if_index)
+    {
+        /* *INDENT-OFF* */
+        pool_foreach (t, igm->tunnels,
+        ({
+            send_ipsec_gre_tunnel_details(t, q, mp->context);
+        }));
+        /* *INDENT-ON* */
+    }
+  else
+    {
+      if ((sw_if_index >= vec_len (igm->tunnel_index_by_sw_if_index)) ||
+         (~0 == igm->tunnel_index_by_sw_if_index[sw_if_index]))
+       {
+         return;
+       }
+      t = &igm->tunnels[igm->tunnel_index_by_sw_if_index[sw_if_index]];
+      send_ipsec_gre_tunnel_details (t, q, mp->context);
+    }
+}
+
+/*
+ * ipsec_gre_api_hookup
+ * Add vpe's API message handlers to the table.
+ * vlib has alread mapped shared memory and
+ * added the client registration handlers.
+ * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
+ */
+#define vl_msg_name_crc_list
+#include <vnet/vnet_all_api_h.h>
+#undef vl_msg_name_crc_list
+
+static void
+setup_message_id_table (api_main_t * am)
+{
+#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
+  foreach_vl_msg_name_crc_ipsec_gre;
+#undef _
+}
+
+static clib_error_t *
+ipsec_gre_api_hookup (vlib_main_t * vm)
+{
+  api_main_t *am = &api_main;
+
+#define _(N,n)                                                  \
+    vl_msg_api_set_handlers(VL_API_##N, #n,                     \
+                           vl_api_##n##_t_handler,              \
+                           vl_noop_handler,                     \
+                           vl_api_##n##_t_endian,               \
+                           vl_api_##n##_t_print,                \
+                           sizeof(vl_api_##n##_t), 1);
+  foreach_vpe_api_msg;
+#undef _
+
+  /*
+   * Set up the (msg_name, crc, message-id) table
+   */
+  setup_message_id_table (am);
+
+  return 0;
+}
+
+VLIB_API_INIT_FUNCTION (ipsec_gre_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */