+++ /dev/null
-/*
- *------------------------------------------------------------------
- * memory_client.c - API message handling, client code.
- *
- * 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 <setjmp.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 <vlib/vlib.h>
-#include <vlib/unix/unix.h>
-#include <vlibmemory/api.h>
-
-#include <vlibmemory/vl_memory_msg_enum.h>
-
-#define vl_typedefs /* define message structures */
-#include <vlibmemory/vl_memory_api_h.h>
-#undef vl_typedefs
-
-#define vl_endianfun /* define message structures */
-#include <vlibmemory/vl_memory_api_h.h>
-#undef vl_endianfun
-
-/* instantiate all the print functions we know about */
-#define vl_print(handle, ...) clib_warning (__VA_ARGS__)
-#define vl_printfun
-#include <vlibmemory/vl_memory_api_h.h>
-#undef vl_printfun
-
-typedef struct
-{
- u8 rx_thread_jmpbuf_valid;
- u8 connected_to_vlib;
- jmp_buf rx_thread_jmpbuf;
- pthread_t rx_thread_handle;
- /* Plugin message base lookup scheme */
- volatile u8 first_msg_id_reply_ready;
- u16 first_msg_id_reply;
-} memory_client_main_t;
-
-memory_client_main_t memory_client_main;
-
-static void *
-rx_thread_fn (void *arg)
-{
- unix_shared_memory_queue_t *q;
- memory_client_main_t *mm = &memory_client_main;
- api_main_t *am = &api_main;
-
- q = am->vl_input_queue;
-
- /* So we can make the rx thread terminate cleanly */
- if (setjmp (mm->rx_thread_jmpbuf) == 0)
- {
- mm->rx_thread_jmpbuf_valid = 1;
- while (1)
- {
- vl_msg_api_queue_handler (q);
- }
- }
- pthread_exit (0);
-}
-
-static void
-vl_api_rx_thread_exit_t_handler (vl_api_rx_thread_exit_t * mp)
-{
- memory_client_main_t *mm = &memory_client_main;
- vl_msg_api_free (mp);
- longjmp (mm->rx_thread_jmpbuf, 1);
-}
-
-static void
-noop_handler (void *notused)
-{
-}
-
-#define foreach_api_msg \
-_(RX_THREAD_EXIT, rx_thread_exit)
-
-static int
-connect_to_vlib_internal (char *svm_name, char *client_name,
- int rx_queue_size, int want_pthread)
-{
- int rv = 0;
- memory_client_main_t *mm = &memory_client_main;
-
- if ((rv = vl_client_api_map (svm_name)))
- {
- clib_warning ("vl_client_api map rv %d", rv);
- 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 _
-
- if (vl_client_connect (client_name, 0 /* punt quota */ ,
- rx_queue_size /* input queue */ ) < 0)
- {
- vl_client_api_unmap ();
- return -1;
- }
-
- /* Start the rx queue thread */
-
- if (want_pthread)
- {
- rv = pthread_create (&mm->rx_thread_handle,
- NULL /*attr */ , rx_thread_fn, 0);
- if (rv)
- clib_warning ("pthread_create returned %d", rv);
- }
-
- mm->connected_to_vlib = 1;
- return 0;
-}
-
-int
-vl_client_connect_to_vlib (char *svm_name, char *client_name,
- int rx_queue_size)
-{
- return connect_to_vlib_internal (svm_name, client_name, rx_queue_size,
- 1 /* want pthread */ );
-}
-
-int
-vl_client_connect_to_vlib_no_rx_pthread (char *svm_name, char *client_name,
- int rx_queue_size)
-{
- return connect_to_vlib_internal (svm_name, client_name, rx_queue_size,
- 0 /* want pthread */ );
-}
-
-void
-vl_client_disconnect_from_vlib (void)
-{
- memory_client_main_t *mm = &memory_client_main;
- api_main_t *am = &api_main;
- uword junk;
-
- if (mm->rx_thread_jmpbuf_valid)
- {
- vl_api_rx_thread_exit_t *ep;
- ep = vl_msg_api_alloc (sizeof (*ep));
- ep->_vl_msg_id = ntohs (VL_API_RX_THREAD_EXIT);
- vl_msg_api_send_shmem (am->vl_input_queue, (u8 *) & ep);
- pthread_join (mm->rx_thread_handle, (void **) &junk);
- }
- if (mm->connected_to_vlib)
- {
- vl_client_disconnect ();
- vl_client_api_unmap ();
- }
- memset (mm, 0, sizeof (*mm));
-}
-
-static void vl_api_get_first_msg_id_reply_t_handler
- (vl_api_get_first_msg_id_reply_t * mp)
-{
- memory_client_main_t *mm = &memory_client_main;
- i32 retval = ntohl (mp->retval);
-
- mm->first_msg_id_reply = (retval >= 0) ? ntohs (mp->first_msg_id) : ~0;
- mm->first_msg_id_reply_ready = 1;
-}
-
-u16
-vl_client_get_first_plugin_msg_id (char *plugin_name)
-{
- vl_api_get_first_msg_id_t *mp;
- api_main_t *am = &api_main;
- memory_client_main_t *mm = &memory_client_main;
- f64 timeout;
- void *old_handler;
- clib_time_t clib_time;
- u16 rv = ~0;
-
- if (strlen (plugin_name) + 1 > sizeof (mp->name))
- return (rv);
-
- memset (&clib_time, 0, sizeof (clib_time));
- clib_time_init (&clib_time);
-
- /* Push this plugin's first_msg_id_reply handler */
- old_handler = am->msg_handlers[VL_API_GET_FIRST_MSG_ID_REPLY];
- am->msg_handlers[VL_API_GET_FIRST_MSG_ID_REPLY] = (void *)
- vl_api_get_first_msg_id_reply_t_handler;
-
- /* Ask the data-plane for the message-ID base of the indicated plugin */
- mm->first_msg_id_reply_ready = 0;
-
- mp = vl_msg_api_alloc (sizeof (*mp));
- memset (mp, 0, sizeof (*mp));
- mp->_vl_msg_id = ntohs (VL_API_GET_FIRST_MSG_ID);
- mp->client_index = am->my_client_index;
- strncpy ((char *) mp->name, plugin_name, sizeof (mp->name) - 1);
-
- vl_msg_api_send_shmem (am->shmem_hdr->vl_input_queue, (u8 *) & mp);
-
- /* Synchronously wait for the answer */
- do
- {
- timeout = clib_time_now (&clib_time) + 1.0;
-
- while (clib_time_now (&clib_time) < timeout)
- {
- if (mm->first_msg_id_reply_ready == 1)
- {
- rv = mm->first_msg_id_reply;
- goto result;
- }
- }
- /* Restore old handler */
- am->msg_handlers[VL_API_GET_FIRST_MSG_ID_REPLY] = old_handler;
-
- return rv;
- }
- while (0);
-
-result:
-
- /* Restore the old handler */
- am->msg_handlers[VL_API_GET_FIRST_MSG_ID_REPLY] = old_handler;
-
- if (rv == (u16) ~ 0)
- clib_warning ("plugin '%s' not registered", plugin_name);
-
- return rv;
-}
-
-void
-vlib_node_sync_stats (vlib_main_t * vm, vlib_node_t * n)
-{
- clib_warning ("STUB called...");
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff