FD.io VPP  v19.01.2-3-gf61a1a8
Vector Packet Processing
jvpp_nsh.c
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1 /*
2  * Copyright (c) 2016 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #include <vnet/vnet.h>
17 
18 #define vl_typedefs /* define message structures */
19 #include <nsh/nsh.api.h>
20 #undef vl_typedefs
21 
22 #include <vnet/api_errno.h>
23 #include <vlibapi/api.h>
24 #include <vlibmemory/api.h>
25 
26 #if VPPJNI_DEBUG == 1
27  #define DEBUG_LOG(...) clib_warning(__VA_ARGS__)
28 #else
29  #define DEBUG_LOG(...)
30 #endif
31 
33 
34 #include "jvpp-nsh/io_fd_vpp_jvpp_nsh_JVppNshImpl.h"
35 #include "jvpp_nsh.h"
36 #include "jvpp-nsh/jvpp_nsh_gen.h"
37 
38 /*
39  * Class: io_fd_vpp_jvpp_nsh_JVppnshImpl
40  * Method: init0
41  * Signature: (JI)V
42  */
43 JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_nsh_JVppNshImpl_init0
44  (JNIEnv *env, jclass clazz, jobject callback, jlong queue_address, jint my_client_index) {
45  nsh_main_t * plugin_main = &nsh_main;
46  clib_warning ("Java_io_fd_vpp_jvpp_nsh_JVppNshImpl_init0");
47 
48  plugin_main->my_client_index = my_client_index;
49  plugin_main->vl_input_queue = (svm_queue_t *)queue_address;
50 
51  plugin_main->callbackObject = (*env)->NewGlobalRef(env, callback);
52  plugin_main->callbackClass = (jclass)(*env)->NewGlobalRef(env, (*env)->GetObjectClass(env, callback));
53 
54  // verify API has not changed since jar generation
55  #define _(N) \
56  if (get_message_id(env, #N) == 0) return;
57  foreach_supported_api_message;
58  #undef _
59 
60  #define _(N,n) \
61  vl_msg_api_set_handlers(get_message_id(env, #N), #n, \
62  vl_api_##n##_t_handler, \
63  vl_noop_handler, \
64  vl_noop_handler, \
65  vl_noop_handler, \
66  sizeof(vl_api_##n##_t), 1);
67  foreach_api_reply_handler;
68  #undef _
69 }
70 
71 JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_nsh_JVppNshImpl_close0
72 (JNIEnv *env, jclass clazz) {
73  nsh_main_t * plugin_main = &nsh_main;
74 
75  // cleanup:
76  (*env)->DeleteGlobalRef(env, plugin_main->callbackClass);
77  (*env)->DeleteGlobalRef(env, plugin_main->callbackObject);
78 
79  plugin_main->callbackClass = NULL;
80  plugin_main->callbackObject = NULL;
81 }
82 
83 /* Attach thread to JVM and cache class references when initiating JVPP ACL */
84 jint JNI_OnLoad(JavaVM *vm, void *reserved) {
85  JNIEnv* env;
86 
87  if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_8) != JNI_OK) {
88  return JNI_EVERSION;
89  }
90 
91  if (cache_class_references(env) != 0) {
92  clib_warning ("Failed to cache class references\n");
93  return JNI_ERR;
94  }
95 
96  return JNI_VERSION_1_8;
97 }
98 
99 /* Clean up cached references when disposing JVPP ACL */
100 void JNI_OnUnload(JavaVM *vm, void *reserved) {
101  JNIEnv* env;
102  if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_8) != JNI_OK) {
103  return;
104  }
105  delete_class_references(env);
106 }
JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_nsh_JVppNshImpl_close0(JNIEnv *env, jclass clazz)
Definition: jvpp_nsh.c:72
u32 my_client_index
Definition: jvpp_nsh.h:31
jobject callbackObject
Definition: jvpp_nsh.h:34
#define NULL
Definition: clib.h:58
JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_nsh_JVppNshImpl_init0(JNIEnv *env, jclass clazz, jobject callback, jlong queue_address, jint my_client_index)
Definition: jvpp_nsh.c:44
jint JNI_OnLoad(JavaVM *vm, void *reserved)
Definition: jvpp_nsh.c:84
svm_queue_t * vl_input_queue
Definition: jvpp_nsh.h:28
jclass callbackClass
Definition: jvpp_nsh.h:35
vlib_main_t * vm
Definition: buffer.c:301
#define clib_warning(format, args...)
Definition: error.h:59
void JNI_OnUnload(JavaVM *vm, void *reserved)
Definition: jvpp_nsh.c:100
struct _svm_queue svm_queue_t
nsh_main_t nsh_main
Definition: nsh.h:167