FD.io VPP  v17.04.2-2-ga8f93f8
Vector Packet Processing
jvpp_snat.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 #include <snat/snat_msg_enum.h>
19 #define vl_typedefs /* define message structures */
20 #include <snat/snat_all_api_h.h>
21 #undef vl_typedefs
22 
23 #include <vnet/api_errno.h>
24 #include <vlibapi/api.h>
25 #include <vlibmemory/api.h>
26 
27 #if VPPJNI_DEBUG == 1
28  #define DEBUG_LOG(...) clib_warning(__VA_ARGS__)
29 #else
30  #define DEBUG_LOG(...)
31 #endif
32 
34 
35 #include "jvpp-snat/io_fd_vpp_jvpp_snat_JVppSnatImpl.h"
36 #include "jvpp_snat.h"
37 #include "jvpp-snat/jvpp_snat_gen.h"
38 
39 /*
40  * Class: io_fd_vpp_jvpp_snat_JVppsnatImpl
41  * Method: init0
42  * Signature: (JI)V
43  */
45  (JNIEnv *env, jclass clazz, jobject callback, jlong queue_address, jint my_client_index) {
46  snat_main_t * plugin_main = &snat_main;
47  clib_warning ("Java_io_fd_vpp_jvpp_snat_JVppSnatImpl_init0");
48 
49  plugin_main->my_client_index = my_client_index;
50  plugin_main->vl_input_queue = (unix_shared_memory_queue_t *)queue_address;
51 
52  plugin_main->callbackObject = (*env)->NewGlobalRef(env, callback);
53  plugin_main->callbackClass = (jclass)(*env)->NewGlobalRef(env, (*env)->GetObjectClass(env, callback));
54 
55  // verify API has not changed since jar generation
56  #define _(N) \
57  get_message_id(env, #N);
58  foreach_supported_api_message;
59  #undef _
60 
61  #define _(N,n) \
62  vl_msg_api_set_handlers(get_message_id(env, #N), #n, \
63  vl_api_##n##_t_handler, \
64  vl_noop_handler, \
65  vl_noop_handler, \
66  vl_noop_handler, \
67  sizeof(vl_api_##n##_t), 1);
68  foreach_api_reply_handler;
69  #undef _
70 }
71 
73 (JNIEnv *env, jclass clazz) {
74  snat_main_t * plugin_main = &snat_main;
75 
76  // cleanup:
77  (*env)->DeleteGlobalRef(env, plugin_main->callbackClass);
78  (*env)->DeleteGlobalRef(env, plugin_main->callbackObject);
79 
80  plugin_main->callbackClass = NULL;
81  plugin_main->callbackObject = NULL;
82 }
83 
84 /* Attach thread to JVM and cache class references when initiating JVPP SNAT */
85 jint JNI_OnLoad(JavaVM *vm, void *reserved) {
86  JNIEnv* env;
87 
88  if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_8) != JNI_OK) {
89  return JNI_EVERSION;
90  }
91 
92  if (cache_class_references(env) != 0) {
93  clib_warning ("Failed to cache class references\n");
94  return JNI_ERR;
95  }
96 
97  return JNI_VERSION_1_8;
98 }
99 
100 /* Clean up cached references when disposing JVPP SNAT */
101 void JNI_OnUnload(JavaVM *vm, void *reserved) {
102  JNIEnv* env;
103  if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_8) != JNI_OK) {
104  return;
105  }
106  delete_class_references(env);
107 }
#define NULL
Definition: clib.h:55
jobject callbackObject
Definition: jvpp_snat.h:34
void JNI_OnUnload(JavaVM *vm, void *reserved)
Definition: jvpp_snat.c:101
JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_snat_JVppSnatImpl_init0(JNIEnv *env, jclass clazz, jobject callback, jlong queue_address, jint my_client_index)
Definition: jvpp_snat.c:45
jclass callbackClass
Definition: jvpp_snat.h:35
jint JNI_OnLoad(JavaVM *vm, void *reserved)
Definition: jvpp_snat.c:85
snat_main_t snat_main
Definition: jvpp_snat.h:39
vlib_main_t * vm
Definition: buffer.c:276
#define clib_warning(format, args...)
Definition: error.h:59
JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_snat_JVppSnatImpl_close0(JNIEnv *env, jclass clazz)
Definition: jvpp_snat.c:73
u32 my_client_index
Definition: jvpp_snat.h:31
unix_shared_memory_queue_t * vl_input_queue
Definition: jvpp_snat.h:28
struct _unix_shared_memory_queue unix_shared_memory_queue_t