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/*
* Copyright (c) 2015-2017 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 <vnet/vnet.h>
#include <vlibmemory/api.h>
#include <vnet/session/application.h>
#include <vnet/session/application_interface.h>
typedef struct
{
u8 *rx_buf;
unix_shared_memory_queue_t **vpp_queue;
vlib_main_t *vlib_main;
} builtin_server_main_t;
builtin_server_main_t builtin_server_main;
int
builtin_session_accept_callback (stream_session_t * s)
{
builtin_server_main_t *bsm = &builtin_server_main;
clib_warning ("called...");
bsm->vpp_queue[s->thread_index] =
session_manager_get_vpp_event_queue (s->thread_index);
s->session_state = SESSION_STATE_READY;
return 0;
}
void
builtin_session_disconnect_callback (stream_session_t * s)
{
clib_warning ("called...");
vnet_disconnect_session (s->session_index, s->thread_index);
}
void
builtin_session_reset_callback (stream_session_t * s)
{
clib_warning ("called.. ");
stream_session_cleanup (s);
}
int
builtin_session_connected_callback (u32 client_index,
stream_session_t * s, u8 is_fail)
{
clib_warning ("called...");
return -1;
}
int
builtin_add_segment_callback (u32 client_index,
const u8 * seg_name, u32 seg_size)
{
clib_warning ("called...");
return -1;
}
int
builtin_redirect_connect_callback (u32 client_index, void *mp)
{
clib_warning ("called...");
return -1;
}
int
builtin_server_rx_callback (stream_session_t * s, session_fifo_event_t * e)
{
int n_written, bytes, total_copy_bytes;
int n_read;
svm_fifo_t *tx_fifo;
builtin_server_main_t *bsm = &builtin_server_main;
session_fifo_event_t evt;
static int serial_number = 0;
bytes = e->enqueue_length;
if (PREDICT_FALSE (bytes <= 0))
{
clib_warning ("bizarre rx callback: bytes %d", bytes);
return 0;
}
tx_fifo = s->server_tx_fifo;
/* Number of bytes we're going to copy */
total_copy_bytes = (bytes < (tx_fifo->nitems - tx_fifo->cursize)) ? bytes :
tx_fifo->nitems - tx_fifo->cursize;
if (PREDICT_FALSE (total_copy_bytes <= 0))
{
clib_warning ("no space in tx fifo, event had %d bytes", bytes);
return 0;
}
vec_validate (bsm->rx_buf, total_copy_bytes - 1);
_vec_len (bsm->rx_buf) = total_copy_bytes;
n_read = svm_fifo_dequeue_nowait (s->server_rx_fifo, 0, total_copy_bytes,
bsm->rx_buf);
ASSERT (n_read == total_copy_bytes);
/*
* Echo back
*/
n_written = svm_fifo_enqueue_nowait (tx_fifo, 0, n_read, bsm->rx_buf);
ASSERT (n_written == total_copy_bytes);
/* Fabricate TX event, send to vpp */
evt.fifo = tx_fifo;
evt.event_type = FIFO_EVENT_SERVER_TX;
evt.enqueue_length = total_copy_bytes;
evt.event_id = serial_number++;
unix_shared_memory_queue_add (bsm->vpp_queue[s->thread_index], (u8 *) & evt,
0 /* do wait for mutex */ );
return 0;
}
static session_cb_vft_t builtin_session_cb_vft = {
.session_accept_callback = builtin_session_accept_callback,
.session_disconnect_callback = builtin_session_disconnect_callback,
.session_connected_callback = builtin_session_connected_callback,
.add_segment_callback = builtin_add_segment_callback,
.redirect_connect_callback = builtin_redirect_connect_callback,
.builtin_server_rx_callback = builtin_server_rx_callback,
.session_reset_callback = builtin_session_reset_callback
};
static int
server_create (vlib_main_t * vm)
{
vnet_bind_args_t _a, *a = &_a;
u64 options[SESSION_OPTIONS_N_OPTIONS];
char segment_name[128];
u32 num_threads;
vlib_thread_main_t *vtm = vlib_get_thread_main ();
num_threads = 1 /* main thread */ + vtm->n_threads;
vec_validate (builtin_server_main.vpp_queue, num_threads - 1);
memset (a, 0, sizeof (*a));
memset (options, 0, sizeof (options));
a->uri = "tcp://0.0.0.0/1234";
a->api_client_index = ~0;
a->session_cb_vft = &builtin_session_cb_vft;
a->options = options;
a->options[SESSION_OPTIONS_SEGMENT_SIZE] = 256 << 10;
a->options[SESSION_OPTIONS_RX_FIFO_SIZE] = 64 << 10;
a->options[SESSION_OPTIONS_TX_FIFO_SIZE] = 64 << 10;
a->segment_name = segment_name;
a->segment_name_length = ARRAY_LEN (segment_name);
return vnet_bind_uri (a);
}
static clib_error_t *
server_create_command_fn (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
int rv;
#if 0
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "whatever %d", &whatever))
;
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
#endif
vnet_session_enable_disable (vm, 1 /* turn on TCP, etc. */ );
rv = server_create (vm);
switch (rv)
{
case 0:
break;
default:
return clib_error_return (0, "server_create returned %d", rv);
}
return 0;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (server_create_command, static) =
{
.path = "test server",
.short_help = "test server",
.function = server_create_command_fn,
};
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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