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authorDave Barach <dave@barachs.net>2016-01-04 15:27:42 -0500
committerDave Barach <dave@barachs.net>2016-01-04 15:28:11 -0500
commitb852bfa18ba5875484374eea1127996b4e41ab66 (patch)
tree738a731b4adac48536b689cc1103d3f17980dba3 /build-root/emacs-lisp/plugin-test-skel.el
parent7d08f5635df5936c2db13cbf19d7e0480b171488 (diff)
Emacs-lisp scripts to generate complete vpp plugins
Change-Id: Id71147a8d5e30aadfb90dc10ea9468cf36ef23a8 Signed-off-by: Dave Barach <dave@barachs.net>
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+;;; plugin-test-skel.el - vpp-api-test plug-in skeleton
+;;;
+;;; 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.
+
+(require 'skeleton)
+
+(define-skeleton plugin-test-skel
+"Insert a plug-in vpp-api-test skeleton "
+nil
+'(if (not (boundp 'plugin-name))
+ (setq plugin-name (read-string "Plugin name: ")))
+'(setq PLUGIN-NAME (upcase plugin-name))
+"
+/*
+ * " plugin-name ".c - skeleton vpp-api-test plug-in
+ *
+ * Copyright (c) <current-year> <your-organization>
+ * 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 <vat/vat.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vlibsocket/api.h>
+#include <vppinfra/error.h>
+
+uword unformat_sw_if_index (unformat_input_t * input, va_list * args);
+
+/* Declare message IDs */
+#include <" plugin-name "/" plugin-name "_msg_enum.h>
+
+/* define message structures */
+#define vl_typedefs
+#include <" plugin-name "/" plugin-name "_all_api_h.h>
+#undef vl_typedefs
+
+/* declare message handlers for each api */
+
+#define vl_endianfun /* define message structures */
+#include <" plugin-name "/" plugin-name "_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...)
+#define vl_printfun
+#include <" plugin-name "/" plugin-name "_all_api_h.h>
+#undef vl_printfun
+
+/* Get the API version number. */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <" plugin-name "/" plugin-name "_all_api_h.h>
+#undef vl_api_version
+
+
+typedef struct {
+ /* API message ID base */
+ u16 msg_id_base;
+ vat_main_t *vat_main;
+} " plugin-name "_test_main_t;
+
+" plugin-name "_test_main_t " plugin-name "_test_main;
+
+#define foreach_standard_reply_retval_handler \\
+_(" plugin-name "_enable_disable_reply)
+
+#define _(n) \\
+ static void vl_api_##n##_t_handler \\
+ (vl_api_##n##_t * mp) \\
+ { \\
+ vat_main_t * vam = " plugin-name "_test_main.vat_main; \\
+ i32 retval = ntohl(mp->retval); \\
+ if (vam->async_mode) { \\
+ vam->async_errors += (retval < 0); \\
+ } else { \\
+ vam->retval = retval; \\
+ vam->result_ready = 1; \\
+ } \\
+ }
+foreach_standard_reply_retval_handler;
+#undef _
+
+/*
+ * Table of message reply handlers, must include boilerplate handlers
+ * we just generated
+ */
+#define foreach_vpe_api_reply_msg \\
+_(" PLUGIN-NAME "_ENABLE_DISABLE_REPLY, " plugin-name "_enable_disable_reply)
+
+
+/* M: construct, but don't yet send a message */
+
+#define M(T,t) \\
+do { \\
+ vam->result_ready = 0; \\
+ mp = vl_msg_api_alloc(sizeof(*mp)); \\
+ memset (mp, 0, sizeof (*mp)); \\
+ mp->_vl_msg_id = ntohs (VL_API_##T + sm->msg_id_base); \\
+ mp->client_index = vam->my_client_index; \\
+} while(0);
+
+#define M2(T,t,n) \\
+do { \\
+ vam->result_ready = 0; \\
+ mp = vl_msg_api_alloc(sizeof(*mp)+(n)); \\
+ memset (mp, 0, sizeof (*mp)); \\
+ mp->_vl_msg_id = ntohs (VL_API_##T + sm->msg_id_base); \\
+ mp->client_index = vam->my_client_index; \\
+} while(0);
+
+/* S: send a message */
+#define S (vl_msg_api_send_shmem (vam->vl_input_queue, (u8 *)&mp))
+
+/* W: wait for results, with timeout */
+#define W \\
+do { \\
+ timeout = vat_time_now (vam) + 1.0; \\
+ \\
+ while (vat_time_now (vam) < timeout) { \\
+ if (vam->result_ready == 1) { \\
+ return (vam->retval); \\
+ } \\
+ } \\
+ return -99; \\
+} while(0);
+
+static int api_" plugin-name "_enable_disable (vat_main_t * vam)
+{
+ " plugin-name "_test_main_t * sm = &" plugin-name "_test_main;
+ unformat_input_t * i = vam->input;
+ f64 timeout;
+ int enable_disable = 1;
+ u32 sw_if_index = ~0;
+ vl_api_" plugin-name "_enable_disable_t * mp;
+
+ /* Parse args required to build the message */
+ while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) {
+ if (unformat (i, \"%U\", unformat_sw_if_index, vam, &sw_if_index))
+ ;
+ else if (unformat (i, \"sw_if_index %d\", &sw_if_index))
+ ;
+ else if (unformat (i, \"disable\"))
+ enable_disable = 0;
+ else
+ break;
+ }
+
+ if (sw_if_index == ~0) {
+ errmsg (\"missing interface name / explicit sw_if_index number \\n\");
+ return -99;
+ }
+
+ /* Construct the API message */
+ M(" PLUGIN-NAME "_ENABLE_DISABLE, " plugin-name "_enable_disable);
+ mp->sw_if_index = ntohl (sw_if_index);
+ mp->enable_disable = enable_disable;
+
+ /* send it... */
+ S;
+
+ /* Wait for a reply... */
+ W;
+}
+
+/*
+ * List of messages that the api test plugin sends,
+ * and that the data plane plugin processes
+ */
+#define foreach_vpe_api_msg \\
+_(" plugin-name "_enable_disable, \"<intfc> [disable]\")
+
+void vat_api_hookup (vat_main_t *vam)
+{
+ " plugin-name "_test_main_t * sm = &" plugin-name "_test_main;
+ /* Hook up handlers for replies from the data plane plug-in */
+#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_vpe_api_reply_msg;
+#undef _
+
+ /* API messages we can send */
+#define _(n,h) hash_set_mem (vam->function_by_name, #n, api_##n);
+ foreach_vpe_api_msg;
+#undef _
+
+ /* Help strings */
+#define _(n,h) hash_set_mem (vam->help_by_name, #n, h);
+ foreach_vpe_api_msg;
+#undef _
+}
+
+clib_error_t * vat_plugin_register (vat_main_t *vam)
+{
+ " plugin-name "_test_main_t * sm = &" plugin-name "_test_main;
+ u8 * name;
+
+ sm->vat_main = vam;
+
+ /* Ask the vpp engine for the first assigned message-id */
+ name = format (0, \"" plugin-name "_%08x%c\", api_version, 0);
+ sm->msg_id_base = vl_client_get_first_plugin_msg_id ((char *) name);
+
+ if (sm->msg_id_base != (u16) ~0)
+ vat_api_hookup (vam);
+
+ vec_free(name);
+
+ return 0;
+}
+")