sctp: move to plugins, disabled by default

Removed sctp buffer metadata from vnet/buffer.h, added it to the
plugin. Add registration APIs for plugin-based vlib_buffer_opaque /
opaque2 decoders, used by "pcap dispatch trace ..." for display in the
wireshark dissector.

Type:refactor

Not actively maintained.

Change-Id: Ie4cb6ba66f68b3b3a7d7d2c63c917fdccf994371
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Dave Barach <dave@barachs.net>

1 files changed, 158 insertions, 0 deletions

diff --git a/src/plugins/sctp/sctp_api.c b/src/plugins/sctp/sctp_api.c
new file mode 100644
index 00000000000..7702d340aae
--- /dev/null
+++ b/src/plugins/sctp/sctp_api.c
@@ -0,0 +1,158 @@
+/*
+ *------------------------------------------------------------------
+ * sctp_api.c - sctp-layer API
+ *
+ * Copyright (c) 2018 SUSE LLC.
+ * 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 <vlib/vlib.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+
+#include <sctp/sctp.h>
+
+#include <sctp/sctp_msg_enum.h>
+
+#define vl_typedefs		/* define message structures */
+#include <sctp/sctp_all_api_h.h>
+#undef vl_typedefs
+
+#define vl_endianfun		/* define message structures */
+#include <sctp/sctp_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 <sctp/sctp_all_api_h.h>
+#undef vl_printfun
+
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <sctp/sctp_all_api_h.h>
+#undef vl_api_version
+
+#define REPLY_MSG_ID_BASE sctp_main.msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+#define foreach_sctp_plugin_api_msg					\
+_(SCTP_ADD_SRC_DST_CONNECTION, sctp_add_src_dst_connection)		\
+_(SCTP_DEL_SRC_DST_CONNECTION, sctp_del_src_dst_connection)		\
+_(SCTP_CONFIG, sctp_config)
+
+static void
+  vl_api_sctp_add_src_dst_connection_t_handler
+  (vl_api_sctp_add_src_dst_connection_t * mp)
+{
+  vlib_main_t *vm = vlib_get_main ();
+  vl_api_sctp_add_src_dst_connection_reply_t *rmp;
+  int rv;
+
+  if (mp->is_ipv6)
+    rv = sctp_sub_connection_add_ip6
+      (vm,
+       (ip6_address_t *) mp->src_address, (ip6_address_t *) mp->dst_address);
+  else
+    rv = sctp_sub_connection_add_ip4
+      (vm,
+       (ip4_address_t *) mp->src_address, (ip4_address_t *) mp->dst_address);
+
+  REPLY_MACRO (VL_API_SCTP_ADD_SRC_DST_CONNECTION_REPLY);
+}
+
+static void
+  vl_api_sctp_del_src_dst_connection_t_handler
+  (vl_api_sctp_del_src_dst_connection_t * mp)
+{
+  vl_api_sctp_del_src_dst_connection_reply_t *rmp;
+  int rv;
+
+  if (mp->is_ipv6)
+    rv = sctp_sub_connection_del_ip6
+      ((ip6_address_t *) mp->src_address, (ip6_address_t *) mp->dst_address);
+  else
+    rv = sctp_sub_connection_del_ip4
+      ((ip4_address_t *) mp->src_address, (ip4_address_t *) mp->dst_address);
+
+  REPLY_MACRO (VL_API_SCTP_ADD_SRC_DST_CONNECTION_REPLY);
+}
+
+static void
+vl_api_sctp_config_t_handler (vl_api_sctp_config_t * mp)
+{
+  sctp_user_configuration_t config;
+  vl_api_sctp_config_reply_t *rmp;
+  int rv;
+
+  config.never_delay_sack = mp->never_delay_sack;
+  config.never_bundle = mp->never_bundle;
+  rv = sctp_configure (config);
+
+  REPLY_MACRO (VL_API_SCTP_CONFIG_REPLY);
+}
+
+#define vl_msg_name_crc_list
+#include <sctp/sctp_all_api_h.h>
+#undef vl_msg_name_crc_list
+
+static void
+setup_message_id_table (sctp_main_t * sm, api_main_t * am)
+{
+#define _(id,n,crc) \
+  vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + sm->msg_id_base);
+  foreach_vl_msg_name_crc_sctp;
+#undef _
+}
+
+clib_error_t *
+sctp_plugin_api_hookup (vlib_main_t * vm)
+{
+  sctp_main_t *sm = &sctp_main;
+  api_main_t *am = &api_main;
+  u8 *name;
+
+  /* Construct the API name */
+  name = format (0, "sctp_%08x%c", api_version, 0);
+
+  /* Ask for a correctly-sized block of API message decode slots */
+  sctp_main.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 + sm->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_sctp_plugin_api_msg;
+#undef _
+
+  /*
+   * Set up the (msg_name, crc, message-id) table
+   */
+  setup_message_id_table (sm, am);
+  vec_free (name);
+
+  return 0;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */