1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/*
* Copyright (c) 2018 Huawei Technologies Co.,Ltd.
* 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.
*/
#define _GNU_SOURCE
#include <pthread.h>
#include <dlfcn.h>
#include <sys/epoll.h>
#include "dmm_vcl.h"
#include "nstack_dmm_api.h" // nstack_socket_ops*
#include <vppinfra/error.h> // clib_warning()
#define DMM_VCL_ADPT_DEBUG dmm_vcl_debug
static unsigned int dmm_vcl_debug;
dmm_vcl_t g_dmm_vcl;
unsigned int
vpphs_ep_ctl_ops (int epFD, int proFD, int ctl_ops,
struct epoll_event *events, void *pdata)
{
struct epoll_event tmpEvt;
int ret = 0;
int dmm_epfd;
tmpEvt.data.ptr = pdata;
tmpEvt.events = events->events;
if (DMM_VCL_ADPT_DEBUG > 0)
clib_warning ("DMM VCL ADPT<%d>: epfd=%d,fd=%d,ops=%d, events=%u",
getpid (), epFD, proFD, ctl_ops, events->events);
dmm_epfd = g_dmm_vcl.epfd;
switch (ctl_ops)
{
case nstack_ep_triggle_add:
ret = g_dmm_vcl.p_epoll_ctl (dmm_epfd, EPOLL_CTL_ADD, proFD, &tmpEvt);
break;
case nstack_ep_triggle_mod:
ret = g_dmm_vcl.p_epoll_ctl (dmm_epfd, EPOLL_CTL_MOD, proFD, &tmpEvt);
break;
case nstack_ep_triggle_del:
ret = g_dmm_vcl.p_epoll_ctl (dmm_epfd, EPOLL_CTL_DEL, proFD, &tmpEvt);
break;
default:
ret = -1;
break;
}
return ret;
}
/*check whether some events exist really */
unsigned int
vpphs_ep_getEvt (int epFD, int profd, unsigned int events)
{
#if 0
uint32_t revent = rr_rs_poll (proFD, epi->revents);
epi->revents = revent & epi->event.events;
#endif
return 0;
}
#define DMM_VCL_MAX_EP_EVENT 1024
static void *
dmm_vcl_epoll_thread (void *arg)
{
int num, i;
struct epoll_event events[DMM_VCL_MAX_EP_EVENT];
while (1)
{
num =
g_dmm_vcl.p_epoll_wait (g_dmm_vcl.epfd, events, DMM_VCL_MAX_EP_EVENT,
100);
for (i = 0; i < num; ++i)
{
if (DMM_VCL_ADPT_DEBUG > 0)
clib_warning
("DMM_VCL_ADPT<%d>: dmm_vcl_epoll i[%d] events=%u, epfd=%d, ptr=%d",
getpid (), i, events[i].events, events[i].data.fd,
events[i].data.ptr);
g_dmm_vcl.regVal.event_cb (events[i].data.ptr, events[i].events);
}
}
return NULL;
}
int
dmm_vpphs_init ()
{
char *env_var_str;
int rv = 0;
env_var_str = getenv (DMM_VCL_ENV_DEBUG);
if (env_var_str)
{
u32 tmp;
if (sscanf (env_var_str, "%u", &tmp) != 1)
clib_warning
("DMM_VCL_ADPT<%d>: WARNING: Invalid debug level specified "
"in the environment variable " DMM_VCL_ENV_DEBUG " (%s)!\n",
getpid (), env_var_str);
else
{
dmm_vcl_debug = tmp;
if (DMM_VCL_ADPT_DEBUG > 0)
clib_warning
("DMM_VCL_ADPT<%d>: configured DMM VCL ADPT debug (%u) from "
"DMM_VCL_ENV_DEBUG ", getpid (), dmm_vcl_debug);
}
}
g_dmm_vcl.epfd = g_dmm_vcl.p_epoll_create (1000);
if (g_dmm_vcl.epfd < 0)
return g_dmm_vcl.epfd;
rv =
pthread_create (&g_dmm_vcl.epoll_threadid, NULL, dmm_vcl_epoll_thread,
NULL);
if (rv != 0)
{
clib_warning ("dmm vcl epoll thread create fail, errno:%d!", errno);
g_dmm_vcl.p_close (g_dmm_vcl.epfd);
g_dmm_vcl.epfd = -1;
return rv;
}
rv = pthread_setname_np (g_dmm_vcl.epoll_threadid, "dmm_vcl_epoll");
if (rv != 0)
{
clib_warning
("pthread_setname_np failed for dmm_vcl_epoll, rv=%d, errno:%d",
rv, errno);
}
return rv;
}
int
vpphs_stack_register (nstack_proc_cb * ops, nstack_event_cb * val)
{
#undef NSTACK_MK_DECL
#define NSTACK_MK_DECL(ret, fn, args) \
(ops->socket_ops).pf ## fn = (typeof(((nstack_socket_ops*)0)->pf ## fn))dlsym(val->handle, # fn);
#include "declare_syscalls.h"
(ops->socket_ops).pfepoll_create = NULL;
g_dmm_vcl.p_epoll_ctl = dlsym (val->handle, "epoll_ctl");
g_dmm_vcl.p_epoll_create = dlsym (val->handle, "epoll_create1");
g_dmm_vcl.p_epoll_wait = dlsym (val->handle, "epoll_wait");
g_dmm_vcl.p_close = dlsym (val->handle, "close");
g_dmm_vcl.regVal = *val;
ops->extern_ops.module_init = dmm_vpphs_init;
ops->extern_ops.fork_init_child = NULL;
ops->extern_ops.fork_parent_fd = NULL;
ops->extern_ops.fork_child_fd = NULL;
ops->extern_ops.fork_free_fd = NULL;
ops->extern_ops.ep_ctl = vpphs_ep_ctl_ops;
ops->extern_ops.ep_getevt = vpphs_ep_getEvt;
ops->extern_ops.ep_prewait_proc = NULL;
ops->extern_ops.stack_fd_check = NULL;
ops->extern_ops.stack_alloc_fd = NULL;
ops->extern_ops.peak = NULL;
return 0;
}
|
