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/*
* 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_log.h"
#include "nstack_rd_api.h"
#define DMM_VCL_ADPT_DEBUG dmm_vcl_debug
static unsigned int dmm_vcl_debug;
dmm_vcl_t g_dmm_vcl;
dmm_vcl_event_t g_dmm_vcl_event[DMM_VCL_MAX_FD_VALUE] = { 0 };
void *vpprd_table = NULL;
void *vpp_get_ip_shmem()
{
return vpprd_table;
}
void *vpphs_ep_ctl_ops(int proFD, int ctl_ops, void *pdata, void *event)
{
struct epoll_event tmpEvt;
int ret = 0;
int dmm_epfd;
g_dmm_vcl_event[proFD].pdata = pdata;
g_dmm_vcl_event[proFD].proFD = proFD;
tmpEvt.data.ptr = &g_dmm_vcl_event[proFD];
tmpEvt.events = *(int *) event;
tmpEvt.events |= (EPOLLIN | EPOLLOUT);
if (DMM_VCL_ADPT_DEBUG > 0)
NSSOC_LOGINF("DMM VCL ADPT<%d>: fd=%d,ops=%d, events=%u",
getpid(), proFD, ctl_ops, event);
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;
}
if (ret == -1)
return NULL;
return pdata;
}
#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];
dmm_vcl_event_t vcl_event = { 0 };
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)
NSSOC_LOGINF
("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);
vcl_event = *(dmm_vcl_event_t *) (events[i].data.ptr);
g_dmm_vcl_event[vcl_event.proFD].event_type = events[i].events;
g_dmm_vcl.regVal.event_cb(vcl_event.pdata, events[i].events,
EVENT_INFORM_APP);
}
}
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)
{
NSSOC_LOGINF
("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)
NSSOC_LOGINF
("DMM_VCL_ADPT<%d>: configured DMM VCL ADPT debug (%u) from "
"DMM_VCL_ENV_DEBUG ", getpid(), dmm_vcl_debug);
}
}
vpprd_table = nstack_local_rd_malloc();
if (!vpprd_table)
{
NSSOC_LOGERR("vpp_hoststack rd table create failed!");
return -1;
}
if (nstack_rd_parse("vpp_hoststack", vpprd_table))
{
NSSOC_LOGWAR("no rd data got!");
NSSOC_LOGWAR("rsocket parse rd data failed");
nstack_rd_table_clear(vpprd_table);
return -1;
}
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)
{
NSSOC_LOGINF("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)
{
NSSOC_LOGINF
("pthread_setname_np failed for dmm_vcl_epoll, rv=%d, errno:%d",
rv, errno);
}
return rv;
}
int vpp_getEvt(int fd)
{
return g_dmm_vcl_event[fd].event_type;
}
int
vpp_hoststack_stack_register(nstack_socket_ops * ops, nstack_event_ops * val,
nstack_proc_ops * fddeal)
{
#undef NSTACK_MK_DECL
#define NSTACK_MK_DECL(ret, fn, args) \
ops->pf ## fn = (typeof(((nstack_socket_ops*)0)->pf ## fn))dlsym(val->handle, # fn);
#include "declare_syscalls.h.tmpl"
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;
fddeal->module_init = dmm_vpphs_init;
fddeal->fork_init_child = dmm_vpphs_init;
fddeal->fork_free_fd = NULL;
fddeal->ep_triggle = vpphs_ep_ctl_ops;
fddeal->get_ip_shmem = vpp_get_ip_shmem;
fddeal->peak = NULL;
fddeal->ep_getEvt = vpp_getEvt;
return 0;
}
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