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-rw-r--r--src/dpi_api.c160
1 files changed, 160 insertions, 0 deletions
diff --git a/src/dpi_api.c b/src/dpi_api.c
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+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2018 Intel, Travelping 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/interface.h>
+#include <vnet/api_errno.h>
+#include <vnet/feature/feature.h>
+#include <vnet/fib/fib_table.h>
+
+#include <vppinfra/byte_order.h>
+#include <vlibmemory/api.h>
+
+#include "dpi.h"
+
+
+#define vl_msg_id(n,h) n,
+typedef enum
+{
+#include "dpi.api.h"
+ /* We'll want to know how many messages IDs we need... */
+ VL_MSG_FIRST_AVAILABLE,
+} vl_msg_id_t;
+#undef vl_msg_id
+
+/* define message structures */
+#define vl_typedefs
+#include "dpi.api.h"
+#undef vl_typedefs
+
+/* define generated endian-swappers */
+#define vl_endianfun
+#include "dpi.api.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 "dpi.api.h"
+#undef vl_printfun
+
+/* Get the API version number */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include "dpi.api.h"
+#undef vl_api_version
+
+#define vl_msg_name_crc_list
+#include "dpi.api.h"
+#undef vl_msg_name_crc_list
+
+#define REPLY_MSG_ID_BASE dm->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+static void
+setup_message_id_table (dpi_main_t * dm, api_main_t * am)
+{
+#define _(id,n,crc) \
+ vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + dm->msg_id_base);
+ foreach_vl_msg_name_crc_dpi;
+#undef _
+}
+
+#define foreach_dpi_plugin_api_msg \
+_(DPI_FLOW_ADD_DEL, dpi_flow_add_del)
+
+
+/* API message handler */
+static void
+vl_api_dpi_flow_add_del_t_handler (vl_api_dpi_flow_add_del_t * mp)
+{
+ vl_api_dpi_flow_add_del_reply_t *rmp = NULL;
+ dpi_main_t *dm = &dpi_main;
+ int rv = 0;
+ u32 fib_index;
+ u32 flow_id = ~0;
+
+ fib_index = fib_table_find (fib_ip_proto (mp->is_ipv6), ntohl (mp->vrf_id));
+ if (fib_index == ~0)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_FIB;
+ goto out;
+ }
+
+ dpi_add_del_flow_args_t a = {
+ .is_add = mp->is_add,
+ .is_ipv6 = mp->is_ipv6,
+ .src_ip = to_ip46 (mp->is_ipv6, mp->src_ip),
+ .dst_ip = to_ip46 (mp->is_ipv6, mp->dst_ip),
+ .src_port = ntohs (mp->src_port),
+ .dst_port = ntohs (mp->dst_port),
+ .protocol = mp->protocol,
+ .fib_index = fib_index,
+ };
+
+ /* Check src ip and dst ip are different */
+ if (ip46_address_cmp (&a.dst_ip, &a.src_ip) == 0)
+ {
+ rv = VNET_API_ERROR_SAME_SRC_DST;
+ goto out;
+ }
+
+ rv = dpi_flow_add_del (&a, &flow_id);
+
+out:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2(VL_API_DPI_FLOW_ADD_DEL_REPLY,
+ ({
+ rmp->flow_id = htonl (flow_id);
+ }));
+ /* *INDENT-ON* */
+}
+
+static clib_error_t *
+dpi_api_hookup (vlib_main_t * vm)
+{
+ dpi_main_t *dm = &dpi_main;
+
+ u8 *name = format (0, "dpi_%08x%c", api_version, 0);
+ dm->msg_id_base = vl_msg_api_get_msg_ids
+ ((char *) name, VL_MSG_FIRST_AVAILABLE);
+
+#define _(N,n) \
+ vl_msg_api_set_handlers((VL_API_##N + dm->msg_id_base), \
+ #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_dpi_plugin_api_msg;
+#undef _
+
+ /* Add our API messages to the global name_crc hash table */
+ setup_message_id_table (dm, &api_main);
+
+ return 0;
+}
+
+VLIB_API_INIT_FUNCTION (dpi_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */