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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 skel-plugin-test
"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, mp) \\
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, mp, 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(mp) (vl_msg_api_send_shmem (vam->vl_input_queue, (u8 *)&mp))
/* W: wait for results, with timeout */
#define W \\
do { \\
f64 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;
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, mp);
mp->sw_if_index = ntohl (sw_if_index);
mp->enable_disable = enable_disable;
/* send it... */
S(mp);
/* 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;
}
")
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