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-rw-r--r--src/plugins/gre/gre_api.c218
1 files changed, 218 insertions, 0 deletions
diff --git a/src/plugins/gre/gre_api.c b/src/plugins/gre/gre_api.c
new file mode 100644
index 00000000000..f8e3ea654fc
--- /dev/null
+++ b/src/plugins/gre/gre_api.c
@@ -0,0 +1,218 @@
+/*
+ *------------------------------------------------------------------
+ * 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 <gre/gre.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/tunnel/tunnel_types_api.h>
+#include <vnet/ip/ip_types_api.h>
+
+#include <gre/gre.api_enum.h>
+#include <gre/gre.api_types.h>
+
+#define REPLY_MSG_ID_BASE gre_main.msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+static int
+gre_tunnel_type_decode (vl_api_gre_tunnel_type_t in, gre_tunnel_type_t *out)
+{
+ switch (in)
+ {
+#define _(n, v) \
+ case GRE_API_TUNNEL_TYPE_##n: \
+ *out = GRE_TUNNEL_TYPE_##n; \
+ return (0);
+ foreach_gre_tunnel_type
+#undef _
+ }
+
+ return (VNET_API_ERROR_INVALID_VALUE);
+}
+
+static vl_api_gre_tunnel_type_t
+gre_tunnel_type_encode (gre_tunnel_type_t in)
+{
+ vl_api_gre_tunnel_type_t out = GRE_API_TUNNEL_TYPE_L3;
+
+ switch (in)
+ {
+#define _(n, v) \
+ case GRE_TUNNEL_TYPE_##n: \
+ out = GRE_API_TUNNEL_TYPE_##n; \
+ break;
+ foreach_gre_tunnel_type
+#undef _
+ }
+
+ return (out);
+}
+
+static void
+vl_api_gre_tunnel_add_del_t_handler (vl_api_gre_tunnel_add_del_t *mp)
+{
+ vnet_gre_tunnel_add_del_args_t _a = {}, *a = &_a;
+ vl_api_gre_tunnel_add_del_reply_t *rmp;
+ tunnel_encap_decap_flags_t flags;
+ u32 sw_if_index = ~0;
+ ip46_type_t itype[2];
+ int rv = 0;
+
+ itype[0] = ip_address_decode (&mp->tunnel.src, &a->src);
+ itype[1] = ip_address_decode (&mp->tunnel.dst, &a->dst);
+
+ if (itype[0] != itype[1])
+ {
+ rv = VNET_API_ERROR_INVALID_PROTOCOL;
+ goto out;
+ }
+
+ if (ip46_address_is_equal (&a->src, &a->dst))
+ {
+ rv = VNET_API_ERROR_SAME_SRC_DST;
+ goto out;
+ }
+
+ rv = gre_tunnel_type_decode (mp->tunnel.type, &a->type);
+
+ if (rv)
+ goto out;
+
+ rv = tunnel_mode_decode (mp->tunnel.mode, &a->mode);
+
+ if (rv)
+ goto out;
+
+ rv = tunnel_encap_decap_flags_decode (mp->tunnel.flags, &flags);
+
+ if (rv)
+ goto out;
+
+ a->is_add = mp->is_add;
+ a->is_ipv6 = (itype[0] == IP46_TYPE_IP6);
+ a->instance = ntohl (mp->tunnel.instance);
+ a->session_id = ntohs (mp->tunnel.session_id);
+ a->outer_table_id = ntohl (mp->tunnel.outer_table_id);
+ a->flags = flags;
+
+ rv = vnet_gre_tunnel_add_del (a, &sw_if_index);
+
+out:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_GRE_TUNNEL_ADD_DEL_REPLY,
+ ({ rmp->sw_if_index = ntohl (sw_if_index); }));
+ /* *INDENT-ON* */
+}
+
+static void
+send_gre_tunnel_details (gre_tunnel_t *t, vl_api_gre_tunnel_dump_t *mp)
+{
+ vl_api_gre_tunnel_details_t *rmp;
+
+ /* *INDENT-OFF* */
+ REPLY_MACRO_DETAILS2 (
+ VL_API_GRE_TUNNEL_DETAILS, ({
+ ip_address_encode (&t->tunnel_src, IP46_TYPE_ANY, &rmp->tunnel.src);
+ ip_address_encode (&t->tunnel_dst.fp_addr, IP46_TYPE_ANY,
+ &rmp->tunnel.dst);
+
+ rmp->tunnel.outer_table_id = htonl (
+ fib_table_get_table_id (t->outer_fib_index, t->tunnel_dst.fp_proto));
+
+ rmp->tunnel.type = gre_tunnel_type_encode (t->type);
+ rmp->tunnel.mode = tunnel_mode_encode (t->mode);
+ rmp->tunnel.flags = tunnel_encap_decap_flags_encode (t->flags);
+ rmp->tunnel.instance = htonl (t->user_instance);
+ rmp->tunnel.sw_if_index = htonl (t->sw_if_index);
+ rmp->tunnel.session_id = htons (t->session_id);
+ }));
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_gre_tunnel_dump_t_handler (vl_api_gre_tunnel_dump_t *mp)
+{
+ vl_api_registration_t *reg;
+ gre_main_t *gm = &gre_main;
+ gre_tunnel_t *t;
+ u32 sw_if_index;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ 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, mp);
+ }
+ /* *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, mp);
+ }
+}
+
+/*
+ * gre_api_hookup
+ * Add vpe's API message handlers to the table.
+ * vlib has already mapped shared memory and
+ * added the client registration handlers.
+ * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
+ */
+/* API definitions */
+#include <vnet/format_fns.h>
+#include <gre/gre.api.c>
+
+static clib_error_t *
+gre_api_hookup (vlib_main_t *vm)
+{
+ /*
+ * Set up the (msg_name, crc, message-id) table
+ */
+ gre_main.msg_id_base = setup_message_id_table ();
+
+ return 0;
+}
+
+VLIB_API_INIT_FUNCTION (gre_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */