}
static void
-noop_handler (void *notused)
+vl_api_memclnt_create_reply_t_handler (vl_api_memclnt_create_reply_t * mp)
{
+ serialize_main_t _sm, *sm = &_sm;
+ api_main_t *am = &api_main;
+ u8 *tblv;
+ u32 nmsgs;
+ int i;
+ u8 *name_and_crc;
+ u32 msg_index;
+
+ am->my_client_index = mp->index;
+ am->my_registration = (vl_api_registration_t *) (uword) mp->handle;
+
+ /* Clean out any previous hash table (unlikely) */
+ if (am->msg_index_by_name_and_crc)
+ {
+ int i;
+ u8 **keys = 0;
+ hash_pair_t *hp;
+ /* *INDENT-OFF* */
+ hash_foreach_pair (hp, am->msg_index_by_name_and_crc,
+ ({
+ vec_add1 (keys, (u8 *) hp->key);
+ }));
+ /* *INDENT-ON* */
+ for (i = 0; i < vec_len (keys); i++)
+ vec_free (keys[i]);
+ vec_free (keys);
+ }
+
+ am->msg_index_by_name_and_crc = hash_create_string (0, sizeof (uword));
+
+ /* Recreate the vnet-side API message handler table */
+ tblv = (u8 *) mp->message_table;
+ serialize_open_vector (sm, tblv);
+ unserialize_integer (sm, &nmsgs, sizeof (u32));
+
+ for (i = 0; i < nmsgs; i++)
+ {
+ msg_index = unserialize_likely_small_unsigned_integer (sm);
+ unserialize_cstring (sm, (char **) &name_and_crc);
+ hash_set_mem (am->msg_index_by_name_and_crc, name_and_crc, msg_index);
+ }
}
-#define foreach_api_msg \
-_(RX_THREAD_EXIT, rx_thread_exit)
+static void
+noop_handler (void *notused)
+{
+}
-static int
-connect_to_vlib_internal (char *svm_name, char *client_name,
- int rx_queue_size, int want_pthread)
+int
+vl_client_connect (const char *name, int ctx_quota, int input_queue_size)
{
+ svm_region_t *svm;
+ vl_api_memclnt_create_t *mp;
+ vl_api_memclnt_create_reply_t *rp;
+ unix_shared_memory_queue_t *vl_input_queue;
+ vl_shmem_hdr_t *shmem_hdr;
int rv = 0;
- memory_client_main_t *mm = &memory_client_main;
+ void *oldheap;
+ api_main_t *am = &api_main;
- if ((rv = vl_client_api_map (svm_name)))
+ if (am->my_registration)
+ {
+ clib_warning ("client %s already connected...", name);
+ return -1;
+ }
+
+ if (am->vlib_rp == 0)
+ {
+ clib_warning ("am->vlib_rp NULL");
+ return -1;
+ }
+
+ svm = am->vlib_rp;
+ shmem_hdr = am->shmem_hdr;
+
+ if (shmem_hdr == 0 || shmem_hdr->vl_input_queue == 0)
+ {
+ clib_warning ("shmem_hdr / input queue NULL");
+ return -1;
+ }
+
+ pthread_mutex_lock (&svm->mutex);
+ oldheap = svm_push_data_heap (svm);
+ vl_input_queue =
+ unix_shared_memory_queue_init (input_queue_size, sizeof (uword),
+ getpid (), 0);
+ pthread_mutex_unlock (&svm->mutex);
+ svm_pop_heap (oldheap);
+
+ am->my_client_index = ~0;
+ am->my_registration = 0;
+ am->vl_input_queue = vl_input_queue;
+
+ mp = vl_msg_api_alloc (sizeof (vl_api_memclnt_create_t));
+ memset (mp, 0, sizeof (*mp));
+ mp->_vl_msg_id = ntohs (VL_API_MEMCLNT_CREATE);
+ mp->ctx_quota = ctx_quota;
+ mp->input_queue = (uword) vl_input_queue;
+ strncpy ((char *) mp->name, name, sizeof (mp->name) - 1);
+
+ vl_msg_api_send_shmem (shmem_hdr->vl_input_queue, (u8 *) & mp);
+
+ while (1)
+ {
+ int qstatus;
+ struct timespec ts, tsrem;
+ int i;
+
+ /* Wait up to 10 seconds */
+ for (i = 0; i < 1000; i++)
+ {
+ qstatus = unix_shared_memory_queue_sub (vl_input_queue, (u8 *) & rp,
+ 1 /* nowait */ );
+ if (qstatus == 0)
+ goto read_one_msg;
+ ts.tv_sec = 0;
+ ts.tv_nsec = 10000 * 1000; /* 10 ms */
+ while (nanosleep (&ts, &tsrem) < 0)
+ ts = tsrem;
+ }
+ /* Timeout... */
+ clib_warning ("memclnt_create_reply timeout");
+ return -1;
+
+ read_one_msg:
+ if (ntohs (rp->_vl_msg_id) != VL_API_MEMCLNT_CREATE_REPLY)
+ {
+ clib_warning ("unexpected reply: id %d", ntohs (rp->_vl_msg_id));
+ continue;
+ }
+ rv = clib_net_to_host_u32 (rp->response);
+
+ vl_msg_api_handler ((void *) rp);
+ break;
+ }
+ return (rv);
+}
+
+static void
+vl_api_memclnt_delete_reply_t_handler (vl_api_memclnt_delete_reply_t * mp)
+{
+ void *oldheap;
+ api_main_t *am = &api_main;
+
+ pthread_mutex_lock (&am->vlib_rp->mutex);
+ oldheap = svm_push_data_heap (am->vlib_rp);
+ unix_shared_memory_queue_free (am->vl_input_queue);
+ pthread_mutex_unlock (&am->vlib_rp->mutex);
+ svm_pop_heap (oldheap);
+
+ am->my_client_index = ~0;
+ am->my_registration = 0;
+ am->vl_input_queue = 0;
+}
+
+void
+vl_client_disconnect (void)
+{
+ vl_api_memclnt_delete_t *mp;
+ vl_api_memclnt_delete_reply_t *rp;
+ unix_shared_memory_queue_t *vl_input_queue;
+ vl_shmem_hdr_t *shmem_hdr;
+ time_t begin;
+ api_main_t *am = &api_main;
+
+ ASSERT (am->vlib_rp);
+ shmem_hdr = am->shmem_hdr;
+ ASSERT (shmem_hdr && shmem_hdr->vl_input_queue);
+
+ vl_input_queue = am->vl_input_queue;
+
+ mp = vl_msg_api_alloc (sizeof (vl_api_memclnt_delete_t));
+ memset (mp, 0, sizeof (*mp));
+ mp->_vl_msg_id = ntohs (VL_API_MEMCLNT_DELETE);
+ mp->index = am->my_client_index;
+ mp->handle = (uword) am->my_registration;
+
+ vl_msg_api_send_shmem (shmem_hdr->vl_input_queue, (u8 *) & mp);
+
+ /*
+ * Have to be careful here, in case the client is disconnecting
+ * because e.g. the vlib process died, or is unresponsive.
+ */
+
+ begin = time (0);
+ while (1)
+ {
+ time_t now;
+
+ now = time (0);
+
+ if (now >= (begin + 2))
+ {
+ clib_warning ("peer unresponsive, give up");
+ am->my_client_index = ~0;
+ am->my_registration = 0;
+ am->shmem_hdr = 0;
+ break;
+ }
+ if (unix_shared_memory_queue_sub (vl_input_queue, (u8 *) & rp, 1) < 0)
+ continue;
+
+ /* drain the queue */
+ if (ntohs (rp->_vl_msg_id) != VL_API_MEMCLNT_DELETE_REPLY)
+ {
+ vl_msg_api_handler ((void *) rp);
+ continue;
+ }
+ vl_msg_api_handler ((void *) rp);
+ break;
+ }
+}
+
+#define foreach_api_msg \
+_(RX_THREAD_EXIT, rx_thread_exit) \
+_(MEMCLNT_CREATE_REPLY, memclnt_create_reply) \
+_(MEMCLNT_DELETE_REPLY, memclnt_delete_reply)
+
+
+int
+vl_client_api_map (const char *region_name)
+{
+ int rv;
+
+ if ((rv = vl_map_shmem (region_name, 0 /* is_vlib */ )) < 0)
{
- clib_warning ("vl_client_api map rv %d", rv);
return rv;
}
sizeof(vl_api_##n##_t), 1);
foreach_api_msg;
#undef _
+ return 0;
+}
+
+void
+vl_client_api_unmap (void)
+{
+ vl_unmap_shmem ();
+}
+
+static int
+connect_to_vlib_internal (const char *svm_name,
+ const 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;
+ }
if (vl_client_connect (client_name, 0 /* punt quota */ ,
rx_queue_size /* input queue */ ) < 0)
}
int
-vl_client_connect_to_vlib (char *svm_name, char *client_name,
- int rx_queue_size)
+vl_client_connect_to_vlib (const char *svm_name,
+ const 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,
+vl_client_connect_to_vlib_no_rx_pthread (const char *svm_name,
+ const char *client_name,
int rx_queue_size)
{
return connect_to_vlib_internal (svm_name, client_name, rx_queue_size,
}
u16
-vl_client_get_first_plugin_msg_id (char *plugin_name)
+vl_client_get_first_plugin_msg_id (const char *plugin_name)
{
vl_api_get_first_msg_id_t *mp;
api_main_t *am = &api_main;
Code Review / vpp.git / blobdiff