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/*
*------------------------------------------------------------------
* api.c - message handler registration
*
* Copyright (c) 2010 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.
*------------------------------------------------------------------
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <signal.h>
#include <pthread.h>
#include <unistd.h>
#include <time.h>
#include <fcntl.h>
#include <string.h>
#include <vppinfra/clib.h>
#include <vppinfra/vec.h>
#include <vppinfra/hash.h>
#include <vppinfra/bitmap.h>
#include <vppinfra/fifo.h>
#include <vppinfra/time.h>
#include <vppinfra/mheap.h>
#include <vppinfra/heap.h>
#include <vppinfra/pool.h>
#include <vppinfra/format.h>
#include <vppinfra/error.h>
#include <vnet/vnet.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
#include <svm.h>
#include <svmdb.h>
#include <vpp-api/vpe_msg_enum.h>
#include <vnet/ip/ip.h>
#define f64_endian(a)
#define f64_print(a,b)
#define vl_typedefs /* define message structures */
#include <vpp-api/vpe_all_api_h.h>
#undef vl_typedefs
#define vl_endianfun /* define message structures */
#include <vpp-api/vpe_all_api_h.h>
#undef vl_endianfun
/* instantiate all the print functions we know about */
#define vl_print(handle, ...)
#define vl_printfun
#include <vpp-api/vpe_all_api_h.h>
#undef vl_printfun
vl_shmem_hdr_t *shmem_hdr;
typedef struct
{
u32 pings_sent;
u32 pings_replied;
volatile u32 signal_received;
/* convenience */
unix_shared_memory_queue_t *vl_input_queue;
u32 my_client_index;
svmdb_client_t *svmdb_client;
} test_main_t;
test_main_t test_main;
static void vl_api_control_ping_reply_t_handler
(vl_api_control_ping_reply_t * mp)
{
test_main_t *tm = &test_main;
fformat (stdout, "control ping reply from pid %d\n", ntohl (mp->vpe_pid));
tm->pings_replied++;
}
void
vlib_cli_output (struct vlib_main_t *vm, char *fmt, ...)
{
clib_warning ("BUG: vlib_cli_output callled...");
}
#define foreach_api_msg \
_(CONTROL_PING_REPLY,control_ping_reply)
void
ping (test_main_t * tm)
{
vl_api_control_ping_t *mp;
mp = vl_msg_api_alloc (sizeof (*mp));
memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = ntohs (VL_API_CONTROL_PING);
mp->client_index = tm->my_client_index;
mp->context = 0xdeadbeef;
vl_msg_api_send_shmem (tm->vl_input_queue, (u8 *) & mp);
}
static void
noop_handler (void *notused)
{
}
int
connect_to_vpe (char *name)
{
int rv = 0;
test_main_t *tm = &test_main;
api_main_t *am = &api_main;
rv = vl_client_connect_to_vlib ("/vpe-api", name, 32);
if (rv < 0)
return rv;
#define _(N,n) \
vl_msg_api_set_handlers(VL_API_##N, #n, \
vl_api_##n##_t_handler, \
noop_handler, \
vl_api_##n##_t_endian, \
vl_api_##n##_t_print, \
sizeof(vl_api_##n##_t), 1);
foreach_api_msg;
#undef _
shmem_hdr = api_main.shmem_hdr;
tm->vl_input_queue = shmem_hdr->vl_input_queue;
tm->my_client_index = am->my_client_index;
return 0;
}
int
disconnect_from_vpe (void)
{
vl_client_disconnect_from_vlib ();
return 0;
}
void
signal_handler (int signo)
{
test_main_t *tm = &test_main;
tm->signal_received = 1;
}
int
main (int argc, char **argv)
{
test_main_t *tm = &test_main;
api_main_t *am = &api_main;
u32 swt_pid = 0;
int connected = 0;
signal (SIGINT, signal_handler);
while (1)
{
if (tm->signal_received)
break;
if (am->shmem_hdr)
swt_pid = am->shmem_hdr->vl_pid;
/* If kill returns 0, the vpe-f process is alive */
if (kill (swt_pid, 0) == 0)
{
/* Try to connect */
if (connected == 0)
{
fformat (stdout, "Connect to VPE-f\n");
if (connect_to_vpe ("test_ha_client") >= 0)
{
tm->pings_sent = 0;
tm->pings_replied = 0;
connected = 1;
}
else
{
fformat (stdout, "Connect failed, sleep and retry...\n");
sleep (1);
continue;
}
}
tm->pings_sent++;
ping (tm);
sleep (1);
/* havent heard back in 3 seconds, disco / reco */
if ((tm->pings_replied + 3) <= tm->pings_sent)
{
fformat (stdout, "VPE-f pid %d not responding\n", swt_pid);
swt_pid = 0;
disconnect_from_vpe ();
connected = 0;
}
}
else
{
if (connected)
{
fformat (stdout, "VPE-f pid %d died\n", swt_pid);
swt_pid = 0;
disconnect_from_vpe ();
connected = 0;
}
sleep (1);
}
}
fformat (stdout, "Signal received, graceful exit\n");
disconnect_from_vpe ();
exit (0);
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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