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-rw-r--r--src/vnet/gre/gre_api.c204
1 files changed, 204 insertions, 0 deletions
diff --git a/src/vnet/gre/gre_api.c b/src/vnet/gre/gre_api.c
new file mode 100644
index 00000000000..333838c06ad
--- /dev/null
+++ b/src/vnet/gre/gre_api.c
@@ -0,0 +1,204 @@
+/*
+ *------------------------------------------------------------------
+ * gre_api.c - 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/gre/gre.h>
+#include <vnet/fib/fib_table.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 \
+_(GRE_ADD_DEL_TUNNEL, gre_add_del_tunnel) \
+_(GRE_TUNNEL_DUMP, gre_tunnel_dump)
+
+static void vl_api_gre_add_del_tunnel_t_handler
+ (vl_api_gre_add_del_tunnel_t * mp)
+{
+ vl_api_gre_add_del_tunnel_reply_t *rmp;
+ int rv = 0;
+ vnet_gre_add_del_tunnel_args_t _a, *a = &_a;
+ u32 outer_fib_id;
+ uword *p;
+ ip4_main_t *im = &ip4_main;
+ u32 sw_if_index = ~0;
+
+ p = hash_get (im->fib_index_by_table_id, ntohl (mp->outer_fib_id));
+ if (!p)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_FIB;
+ goto out;
+ }
+ outer_fib_id = p[0];
+
+ /* Check src & dst are different */
+ if ((mp->is_ipv6 && memcmp (mp->src_address, mp->dst_address, 16) == 0) ||
+ (!mp->is_ipv6 && memcmp (mp->src_address, mp->dst_address, 4) == 0))
+ {
+ rv = VNET_API_ERROR_SAME_SRC_DST;
+ goto out;
+ }
+ memset (a, 0, sizeof (*a));
+
+ a->is_add = mp->is_add;
+ a->teb = mp->teb;
+
+ /* ip addresses sent in network byte order */
+ clib_memcpy (&(a->src), mp->src_address, 4);
+ clib_memcpy (&(a->dst), mp->dst_address, 4);
+
+ a->outer_fib_id = outer_fib_id;
+ rv = vnet_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_gre_tunnel_details
+ (gre_tunnel_t * t, unix_shared_memory_queue_t * q, u32 context)
+{
+ vl_api_gre_tunnel_details_t *rmp;
+ ip4_main_t *im = &ip4_main;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_GRE_TUNNEL_DETAILS);
+ clib_memcpy (rmp->src_address, &(t->tunnel_src), 4);
+ clib_memcpy (rmp->dst_address, &(t->tunnel_dst), 4);
+ rmp->outer_fib_id = htonl (im->fibs[t->outer_fib_index].ft_table_id);
+ rmp->teb = (GRE_TUNNEL_TYPE_TEB == t->type);
+ rmp->sw_if_index = htonl (t->sw_if_index);
+ rmp->context = context;
+
+ vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_gre_tunnel_dump_t_handler (vl_api_gre_tunnel_dump_t * mp)
+{
+ unix_shared_memory_queue_t *q;
+ gre_main_t *gm = &gre_main;
+ 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, gm->tunnels,
+ ({
+ send_gre_tunnel_details(t, q, mp->context);
+ }));
+ /* *INDENT-ON* */
+ }
+ else
+ {
+ if ((sw_if_index >= vec_len (gm->tunnel_index_by_sw_if_index)) ||
+ (~0 == gm->tunnel_index_by_sw_if_index[sw_if_index]))
+ {
+ return;
+ }
+ t = &gm->tunnels[gm->tunnel_index_by_sw_if_index[sw_if_index]];
+ send_gre_tunnel_details (t, q, mp->context);
+ }
+}
+
+/*
+ * 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_gre;
+#undef _
+}
+
+static clib_error_t *
+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 (gre_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */