+++ /dev/null
-/*
-* Copyright (c) 2017-2019 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>
-#include <vnet/session-apps/proxy.h>
-
-proxy_main_t proxy_main;
-
-typedef struct
-{
- char uri[128];
- u32 app_index;
- u32 api_context;
-} proxy_connect_args_t;
-
-static void
-proxy_cb_fn (void *data, u32 data_len)
-{
- proxy_connect_args_t *pa = (proxy_connect_args_t *) data;
- vnet_connect_args_t a;
-
- memset (&a, 0, sizeof (a));
- a.api_context = pa->api_context;
- a.app_index = pa->app_index;
- a.uri = pa->uri;
- vnet_connect_uri (&a);
-}
-
-static void
-proxy_call_main_thread (vnet_connect_args_t * a)
-{
- if (vlib_get_thread_index () == 0)
- {
- vnet_connect_uri (a);
- }
- else
- {
- proxy_connect_args_t args;
- args.api_context = a->api_context;
- args.app_index = a->app_index;
- clib_memcpy (args.uri, a->uri, vec_len (a->uri));
- vl_api_rpc_call_main_thread (proxy_cb_fn, (u8 *) & args, sizeof (args));
- }
-}
-
-static void
-delete_proxy_session (session_t * s, int is_active_open)
-{
- proxy_main_t *pm = &proxy_main;
- proxy_session_t *ps = 0;
- vnet_disconnect_args_t _a, *a = &_a;
- session_t *active_open_session = 0;
- session_t *server_session = 0;
- uword *p;
- u64 handle;
-
- handle = session_handle (s);
-
- clib_spinlock_lock_if_init (&pm->sessions_lock);
- if (is_active_open)
- {
- active_open_session = s;
-
- p = hash_get (pm->proxy_session_by_active_open_handle, handle);
- if (p == 0)
- {
- clib_warning ("proxy session for %s handle %lld (%llx) AWOL",
- is_active_open ? "active open" : "server",
- handle, handle);
- }
- else if (!pool_is_free_index (pm->sessions, p[0]))
- {
- ps = pool_elt_at_index (pm->sessions, p[0]);
- if (ps->vpp_server_handle != ~0)
- server_session = session_get_from_handle (ps->vpp_server_handle);
- else
- server_session = 0;
- }
- }
- else
- {
- server_session = s;
-
- p = hash_get (pm->proxy_session_by_server_handle, handle);
- if (p == 0)
- {
- clib_warning ("proxy session for %s handle %lld (%llx) AWOL",
- is_active_open ? "active open" : "server",
- handle, handle);
- }
- else if (!pool_is_free_index (pm->sessions, p[0]))
- {
- ps = pool_elt_at_index (pm->sessions, p[0]);
- if (ps->vpp_active_open_handle != ~0)
- active_open_session = session_get_from_handle
- (ps->vpp_active_open_handle);
- else
- active_open_session = 0;
- }
- }
-
- if (ps)
- {
- if (CLIB_DEBUG > 0)
- clib_memset (ps, 0xFE, sizeof (*ps));
- pool_put (pm->sessions, ps);
- }
-
- clib_spinlock_unlock_if_init (&pm->sessions_lock);
-
- if (active_open_session)
- {
- a->handle = session_handle (active_open_session);
- a->app_index = pm->active_open_app_index;
- hash_unset (pm->proxy_session_by_active_open_handle,
- session_handle (active_open_session));
- vnet_disconnect_session (a);
- }
-
- if (server_session)
- {
- a->handle = session_handle (server_session);
- a->app_index = pm->server_app_index;
- hash_unset (pm->proxy_session_by_server_handle,
- session_handle (server_session));
- vnet_disconnect_session (a);
- }
-}
-
-static int
-proxy_accept_callback (session_t * s)
-{
- proxy_main_t *pm = &proxy_main;
-
- s->session_state = SESSION_STATE_READY;
-
- clib_spinlock_lock_if_init (&pm->sessions_lock);
-
- return 0;
-}
-
-static void
-proxy_disconnect_callback (session_t * s)
-{
- delete_proxy_session (s, 0 /* is_active_open */ );
-}
-
-static void
-proxy_reset_callback (session_t * s)
-{
- clib_warning ("Reset session %U", format_session, s, 2);
- delete_proxy_session (s, 0 /* is_active_open */ );
-}
-
-static int
-proxy_connected_callback (u32 app_index, u32 api_context,
- session_t * s, u8 is_fail)
-{
- clib_warning ("called...");
- return -1;
-}
-
-static int
-proxy_add_segment_callback (u32 client_index, u64 segment_handle)
-{
- clib_warning ("called...");
- return -1;
-}
-
-static int
-proxy_rx_callback (session_t * s)
-{
- u32 max_dequeue;
- int actual_transfer __attribute__ ((unused));
- svm_fifo_t *tx_fifo, *rx_fifo;
- proxy_main_t *pm = &proxy_main;
- u32 thread_index = vlib_get_thread_index ();
- vnet_connect_args_t _a, *a = &_a;
- proxy_session_t *ps;
- int proxy_index;
- uword *p;
- svm_fifo_t *active_open_tx_fifo;
-
- ASSERT (s->thread_index == thread_index);
-
- clib_spinlock_lock_if_init (&pm->sessions_lock);
- p = hash_get (pm->proxy_session_by_server_handle, session_handle (s));
-
- if (PREDICT_TRUE (p != 0))
- {
- clib_spinlock_unlock_if_init (&pm->sessions_lock);
- active_open_tx_fifo = s->rx_fifo;
-
- /*
- * Send event for active open tx fifo
- */
- if (svm_fifo_set_event (active_open_tx_fifo))
- {
- u32 ao_thread_index = active_open_tx_fifo->master_thread_index;
- u32 ao_session_index = active_open_tx_fifo->master_session_index;
- if (session_send_io_evt_to_thread_custom (&ao_session_index,
- ao_thread_index,
- SESSION_IO_EVT_TX))
- clib_warning ("failed to enqueue tx evt");
- }
- }
- else
- {
- rx_fifo = s->rx_fifo;
- tx_fifo = s->tx_fifo;
-
- ASSERT (rx_fifo->master_thread_index == thread_index);
- ASSERT (tx_fifo->master_thread_index == thread_index);
-
- max_dequeue = svm_fifo_max_dequeue_cons (s->rx_fifo);
-
- if (PREDICT_FALSE (max_dequeue == 0))
- return 0;
-
- actual_transfer = svm_fifo_peek (rx_fifo, 0 /* relative_offset */ ,
- max_dequeue, pm->rx_buf[thread_index]);
-
- /* $$$ your message in this space: parse url, etc. */
-
- clib_memset (a, 0, sizeof (*a));
-
- clib_spinlock_lock_if_init (&pm->sessions_lock);
- pool_get (pm->sessions, ps);
- clib_memset (ps, 0, sizeof (*ps));
- ps->server_rx_fifo = rx_fifo;
- ps->server_tx_fifo = tx_fifo;
- ps->vpp_server_handle = session_handle (s);
-
- proxy_index = ps - pm->sessions;
-
- hash_set (pm->proxy_session_by_server_handle, ps->vpp_server_handle,
- proxy_index);
-
- clib_spinlock_unlock_if_init (&pm->sessions_lock);
-
- a->uri = (char *) pm->client_uri;
- a->api_context = proxy_index;
- a->app_index = pm->active_open_app_index;
- proxy_call_main_thread (a);
- }
-
- return 0;
-}
-
-static session_cb_vft_t proxy_session_cb_vft = {
- .session_accept_callback = proxy_accept_callback,
- .session_disconnect_callback = proxy_disconnect_callback,
- .session_connected_callback = proxy_connected_callback,
- .add_segment_callback = proxy_add_segment_callback,
- .builtin_app_rx_callback = proxy_rx_callback,
- .session_reset_callback = proxy_reset_callback
-};
-
-static int
-active_open_connected_callback (u32 app_index, u32 opaque,
- session_t * s, u8 is_fail)
-{
- proxy_main_t *pm = &proxy_main;
- proxy_session_t *ps;
- u8 thread_index = vlib_get_thread_index ();
-
- if (is_fail)
- {
- clib_warning ("connection %d failed!", opaque);
- return 0;
- }
-
- /*
- * Setup proxy session handle.
- */
- clib_spinlock_lock_if_init (&pm->sessions_lock);
-
- ps = pool_elt_at_index (pm->sessions, opaque);
- ps->vpp_active_open_handle = session_handle (s);
-
- s->tx_fifo = ps->server_rx_fifo;
- s->rx_fifo = ps->server_tx_fifo;
-
- /*
- * Reset the active-open tx-fifo master indices so the active-open session
- * will receive data, etc.
- */
- s->tx_fifo->master_session_index = s->session_index;
- s->tx_fifo->master_thread_index = s->thread_index;
-
- /*
- * Account for the active-open session's use of the fifos
- * so they won't disappear until the last session which uses
- * them disappears
- */
- s->tx_fifo->refcnt++;
- s->rx_fifo->refcnt++;
-
- hash_set (pm->proxy_session_by_active_open_handle,
- ps->vpp_active_open_handle, opaque);
-
- clib_spinlock_unlock_if_init (&pm->sessions_lock);
-
- /*
- * Send event for active open tx fifo
- */
- ASSERT (s->thread_index == thread_index);
- if (svm_fifo_set_event (s->tx_fifo))
- session_send_io_evt_to_thread (s->tx_fifo, SESSION_IO_EVT_TX);
-
- return 0;
-}
-
-static void
-active_open_reset_callback (session_t * s)
-{
- delete_proxy_session (s, 1 /* is_active_open */ );
-}
-
-static int
-active_open_create_callback (session_t * s)
-{
- return 0;
-}
-
-static void
-active_open_disconnect_callback (session_t * s)
-{
- delete_proxy_session (s, 1 /* is_active_open */ );
-}
-
-static int
-active_open_rx_callback (session_t * s)
-{
- svm_fifo_t *proxy_tx_fifo;
-
- proxy_tx_fifo = s->rx_fifo;
-
- /*
- * Send event for server tx fifo
- */
- if (svm_fifo_set_event (proxy_tx_fifo))
- {
- u8 thread_index = proxy_tx_fifo->master_thread_index;
- u32 session_index = proxy_tx_fifo->master_session_index;
- return session_send_io_evt_to_thread_custom (&session_index,
- thread_index,
- SESSION_IO_EVT_TX);
- }
-
- return 0;
-}
-
-/* *INDENT-OFF* */
-static session_cb_vft_t active_open_clients = {
- .session_reset_callback = active_open_reset_callback,
- .session_connected_callback = active_open_connected_callback,
- .session_accept_callback = active_open_create_callback,
- .session_disconnect_callback = active_open_disconnect_callback,
- .builtin_app_rx_callback = active_open_rx_callback
-};
-/* *INDENT-ON* */
-
-
-static void
-create_api_loopbacks (vlib_main_t * vm)
-{
- proxy_main_t *pm = &proxy_main;
- api_main_t *am = &api_main;
- vl_shmem_hdr_t *shmem_hdr;
-
- shmem_hdr = am->shmem_hdr;
- pm->vl_input_queue = shmem_hdr->vl_input_queue;
- pm->server_client_index =
- vl_api_memclnt_create_internal ("proxy_server", pm->vl_input_queue);
- pm->active_open_client_index =
- vl_api_memclnt_create_internal ("proxy_active_open", pm->vl_input_queue);
-}
-
-static int
-proxy_server_attach ()
-{
- proxy_main_t *pm = &proxy_main;
- u64 options[APP_OPTIONS_N_OPTIONS];
- vnet_app_attach_args_t _a, *a = &_a;
- u32 segment_size = 512 << 20;
-
- clib_memset (a, 0, sizeof (*a));
- clib_memset (options, 0, sizeof (options));
-
- if (pm->private_segment_size)
- segment_size = pm->private_segment_size;
- a->api_client_index = pm->server_client_index;
- a->session_cb_vft = &proxy_session_cb_vft;
- a->options = options;
- a->options[APP_OPTIONS_SEGMENT_SIZE] = segment_size;
- a->options[APP_OPTIONS_RX_FIFO_SIZE] = pm->fifo_size;
- a->options[APP_OPTIONS_TX_FIFO_SIZE] = pm->fifo_size;
- a->options[APP_OPTIONS_PRIVATE_SEGMENT_COUNT] = pm->private_segment_count;
- a->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] =
- pm->prealloc_fifos ? pm->prealloc_fifos : 0;
-
- a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN;
-
- if (vnet_application_attach (a))
- {
- clib_warning ("failed to attach server");
- return -1;
- }
- pm->server_app_index = a->app_index;
-
- return 0;
-}
-
-static int
-active_open_attach (void)
-{
- proxy_main_t *pm = &proxy_main;
- vnet_app_attach_args_t _a, *a = &_a;
- u64 options[16];
-
- clib_memset (a, 0, sizeof (*a));
- clib_memset (options, 0, sizeof (options));
-
- a->api_client_index = pm->active_open_client_index;
- a->session_cb_vft = &active_open_clients;
-
- options[APP_OPTIONS_ACCEPT_COOKIE] = 0x12345678;
- options[APP_OPTIONS_SEGMENT_SIZE] = 512 << 20;
- options[APP_OPTIONS_RX_FIFO_SIZE] = pm->fifo_size;
- options[APP_OPTIONS_TX_FIFO_SIZE] = pm->fifo_size;
- options[APP_OPTIONS_PRIVATE_SEGMENT_COUNT] = pm->private_segment_count;
- options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] =
- pm->prealloc_fifos ? pm->prealloc_fifos : 0;
-
- options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN
- | APP_OPTIONS_FLAGS_IS_PROXY;
-
- a->options = options;
-
- if (vnet_application_attach (a))
- return -1;
-
- pm->active_open_app_index = a->app_index;
-
- return 0;
-}
-
-static int
-proxy_server_listen ()
-{
- proxy_main_t *pm = &proxy_main;
- vnet_listen_args_t _a, *a = &_a;
- clib_memset (a, 0, sizeof (*a));
- a->app_index = pm->server_app_index;
- a->uri = (char *) pm->server_uri;
- return vnet_bind_uri (a);
-}
-
-static int
-proxy_server_create (vlib_main_t * vm)
-{
- proxy_main_t *pm = &proxy_main;
- vlib_thread_main_t *vtm = vlib_get_thread_main ();
- u32 num_threads;
- int i;
-
- if (pm->server_client_index == (u32) ~ 0)
- create_api_loopbacks (vm);
-
- num_threads = 1 /* main thread */ + vtm->n_threads;
- vec_validate (proxy_main.server_event_queue, num_threads - 1);
- vec_validate (proxy_main.active_open_event_queue, num_threads - 1);
- vec_validate (pm->rx_buf, num_threads - 1);
-
- for (i = 0; i < num_threads; i++)
- vec_validate (pm->rx_buf[i], pm->rcv_buffer_size);
-
- if (proxy_server_attach ())
- {
- clib_warning ("failed to attach server app");
- return -1;
- }
- if (proxy_server_listen ())
- {
- clib_warning ("failed to start listening");
- return -1;
- }
- if (active_open_attach ())
- {
- clib_warning ("failed to attach active open app");
- return -1;
- }
-
- for (i = 0; i < num_threads; i++)
- {
- pm->active_open_event_queue[i] = session_main_get_vpp_event_queue (i);
-
- ASSERT (pm->active_open_event_queue[i]);
-
- pm->server_event_queue[i] = session_main_get_vpp_event_queue (i);
- }
-
- return 0;
-}
-
-static clib_error_t *
-proxy_server_create_command_fn (vlib_main_t * vm, unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- proxy_main_t *pm = &proxy_main;
- char *default_server_uri = "tcp://0.0.0.0/23";
- char *default_client_uri = "tcp://6.0.2.2/23";
- int rv;
- u64 tmp;
-
- pm->fifo_size = 64 << 10;
- pm->rcv_buffer_size = 1024;
- pm->prealloc_fifos = 0;
- pm->private_segment_count = 0;
- pm->private_segment_size = 0;
- pm->server_uri = 0;
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "fifo-size %d", &pm->fifo_size))
- pm->fifo_size <<= 10;
- else if (unformat (input, "rcv-buf-size %d", &pm->rcv_buffer_size))
- ;
- else if (unformat (input, "prealloc-fifos %d", &pm->prealloc_fifos))
- ;
- else if (unformat (input, "private-segment-count %d",
- &pm->private_segment_count))
- ;
- else if (unformat (input, "private-segment-size %U",
- unformat_memory_size, &tmp))
- {
- if (tmp >= 0x100000000ULL)
- return clib_error_return
- (0, "private segment size %lld (%llu) too large", tmp, tmp);
- pm->private_segment_size = tmp;
- }
- else if (unformat (input, "server-uri %s", &pm->server_uri))
- ;
- else if (unformat (input, "client-uri %s", &pm->client_uri))
- pm->client_uri = format (0, "%s%c", pm->client_uri, 0);
- else
- return clib_error_return (0, "unknown input `%U'",
- format_unformat_error, input);
- }
-
- if (!pm->server_uri)
- {
- clib_warning ("No server-uri provided, Using default: %s",
- default_server_uri);
- pm->server_uri = format (0, "%s%c", default_server_uri, 0);
- }
- if (!pm->client_uri)
- {
- clib_warning ("No client-uri provided, Using default: %s",
- default_client_uri);
- pm->client_uri = format (0, "%s%c", default_client_uri, 0);
- }
-
- vnet_session_enable_disable (vm, 1 /* turn on session and transport */ );
-
- rv = proxy_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 (proxy_create_command, static) =
-{
- .path = "test proxy server",
- .short_help = "test proxy server [server-uri <tcp://ip/port>]"
- "[client-uri <tcp://ip/port>][fifo-size <nn>][rcv-buf-size <nn>]"
- "[prealloc-fifos <nn>][private-segment-size <mem>]"
- "[private-segment-count <nn>]",
- .function = proxy_server_create_command_fn,
-};
-/* *INDENT-ON* */
-
-clib_error_t *
-proxy_main_init (vlib_main_t * vm)
-{
- proxy_main_t *pm = &proxy_main;
- pm->server_client_index = ~0;
- pm->active_open_client_index = ~0;
- pm->proxy_session_by_active_open_handle = hash_create (0, sizeof (uword));
- pm->proxy_session_by_server_handle = hash_create (0, sizeof (uword));
-
- return 0;
-}
-
-VLIB_INIT_FUNCTION (proxy_main_init);
-
-/*
-* fd.io coding-style-patch-verification: ON
-*
-* Local Variables:
-* eval: (c-set-style "gnu")
-* End:
-*/
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