diff options
author | Sachin Saxena <sachin.saxena@freescale.com> | 2018-02-28 20:28:52 +0530 |
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committer | Sachin Saxena <sachin.saxena@nxp.com> | 2018-02-28 20:34:56 +0530 |
commit | 0689fce93ba269c48f83a2f70f971b3976d04c90 (patch) | |
tree | 4cc2908df3598507cc1828ac19d8c43b22450ffa /src/vnet/udp/builtin_server.c | |
parent | 746b57564deede624261ab8a96c94f562f24d22c (diff) | |
parent | d594711a5d79859a7d0bde83a516f7ab52051d9b (diff) |
Merge branch 'stable/1710' of https://gerrit.fd.io/r/vpp into 17101710
Diffstat (limited to 'src/vnet/udp/builtin_server.c')
-rw-r--r-- | src/vnet/udp/builtin_server.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/src/vnet/udp/builtin_server.c b/src/vnet/udp/builtin_server.c new file mode 100644 index 00000000..7dd03670 --- /dev/null +++ b/src/vnet/udp/builtin_server.c @@ -0,0 +1,261 @@ +/* + * Copyright (c) 2016 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. + */ + +/** @file + udp builtin server +*/ + +#include <vnet/udp/udp.h> +#include <vnet/session/session.h> +#include <vnet/session/application_interface.h> + +/** per-worker built-in server copy buffers */ +u8 **copy_buffers; + +static int +builtin_session_create_callback (stream_session_t * s) +{ + /* Simple version: declare session ready-to-go... */ + s->session_state = SESSION_STATE_READY; + return 0; +} + +static void +builtin_session_disconnect_callback (stream_session_t * s) +{ + stream_session_disconnect (s); +} + +static int +builtin_server_rx_callback (stream_session_t * s) +{ + svm_fifo_t *rx_fifo, *tx_fifo; + u32 this_transfer, max_deq, max_enq; + int actual_transfer; + u8 *my_copy_buffer; + session_fifo_event_t evt; + unix_shared_memory_queue_t *q; + + my_copy_buffer = copy_buffers[s->thread_index]; + rx_fifo = s->server_rx_fifo; + tx_fifo = s->server_tx_fifo; + + max_deq = svm_fifo_max_dequeue (rx_fifo); + max_enq = svm_fifo_max_enqueue (tx_fifo); + this_transfer = max_enq < max_deq ? max_enq : max_deq; + + vec_validate (my_copy_buffer, this_transfer - 1); + _vec_len (my_copy_buffer) = this_transfer; + + actual_transfer = svm_fifo_dequeue_nowait (rx_fifo, this_transfer, + my_copy_buffer); + ASSERT (actual_transfer == this_transfer); + actual_transfer = svm_fifo_enqueue_nowait (tx_fifo, this_transfer, + my_copy_buffer); + ASSERT (actual_transfer == this_transfer); + + copy_buffers[s->thread_index] = my_copy_buffer; + + if (svm_fifo_set_event (tx_fifo)) + { + /* Fabricate TX event, send to ourselves */ + evt.fifo = tx_fifo; + evt.event_type = FIFO_EVENT_APP_TX; + evt.event_id = 0; + q = session_manager_get_vpp_event_queue (s->thread_index); + unix_shared_memory_queue_add (q, (u8 *) & evt, + 0 /* do wait for mutex */ ); + } + + return 0; +} + +/* *INDENT-OFF* */ +static session_cb_vft_t builtin_server = { + .session_accept_callback = builtin_session_create_callback, + .session_disconnect_callback = builtin_session_disconnect_callback, + .builtin_server_rx_callback = builtin_server_rx_callback +}; +/* *INDENT-ON* */ + +static int +attach_builtin_uri_server () +{ + vnet_app_attach_args_t _a, *a = &_a; + u8 segment_name[128]; + u32 segment_name_length; + u64 options[16]; + + segment_name_length = ARRAY_LEN (segment_name); + + memset (a, 0, sizeof (*a)); + memset (options, 0, sizeof (options)); + + a->api_client_index = ~0; + a->segment_name = segment_name; + a->segment_name_length = segment_name_length; + a->session_cb_vft = &builtin_server; + + options[SESSION_OPTIONS_ACCEPT_COOKIE] = 0x12345678; + options[SESSION_OPTIONS_SEGMENT_SIZE] = (2 << 30); /*$$$$ config / arg */ + options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_BUILTIN_APP; + options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = 1024; + + a->options = options; + + return vnet_application_attach (a); +} + +static int +bind_builtin_uri_server (u8 * uri) +{ + vnet_bind_args_t _a, *a = &_a; + int rv; + + rv = attach_builtin_uri_server (); + if (rv) + return rv; + + memset (a, 0, sizeof (*a)); + a->uri = (char *) uri; + a->app_index = ~0; /* built-in server */ + + rv = vnet_bind_uri (a); + + return rv; +} + +static int +unbind_builtin_uri_server (u8 * uri) +{ + vnet_unbind_args_t _a, *a = &_a; + + a->app_index = ~0; + a->uri = (char *) uri; + + return vnet_unbind_uri (a); +} + +static clib_error_t * +builtin_server_init (vlib_main_t * vm) +{ + vlib_thread_main_t *vtm = vlib_get_thread_main (); + u32 num_threads; + + num_threads = 1 /* main thread */ + vtm->n_threads; + + vec_validate (copy_buffers, num_threads - 1); + return 0; +} + +VLIB_INIT_FUNCTION (builtin_server_init); + +static clib_error_t * +builtin_uri_bind_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + u8 *uri = 0; + int rv; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "uri %s", &uri)) + ; + else + break; + } + + if (uri == 0) + return clib_error_return (0, "uri to bind not specified..."); + + rv = bind_builtin_uri_server (uri); + + vec_free (uri); + + switch (rv) + { + case 0: + break; + + default: + return clib_error_return (0, "bind_uri_server returned %d", rv); + break; + } + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (builtin_uri_bind_command, static) = +{ + .path = "builtin uri bind", + .short_help = "builtin uri bind", + .function = builtin_uri_bind_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +builtin_uri_unbind_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + u8 *uri = 0; + int rv; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "uri %s", &uri)) + ; + else + break; + } + + if (uri == 0) + return clib_error_return (0, "uri to unbind not specified..."); + + rv = unbind_builtin_uri_server (uri); + + vec_free (uri); + + switch (rv) + { + case 0: + break; + + default: + return clib_error_return (0, "unbind_uri_server returned %d", rv); + break; + } + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (builtin_uri_unbind_command, static) = +{ + .path = "builtin uri unbind", + .short_help = "builtin uri unbind", + .function = builtin_uri_unbind_command_fn, +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |