blob: d2edd54512aef049533fb675a722f13cb0d2180d [file] [log] [blame]
Florin Corasba7d8f52019-02-22 13:11:38 -08001/*
2 * Copyright (c) 2019 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include <vnet/session/application_local.h>
17#include <vnet/session/session.h>
18
Florin Coras653e43f2019-03-04 10:56:23 -080019static ct_connection_t *connections;
Florin Corasd4295e62019-02-22 13:11:38 -080020
Florin Coras653e43f2019-03-04 10:56:23 -080021static void
22ct_enable_disable_main_pre_input_node (u8 is_add)
23{
24 u32 n_conns;
25
Florin Coras6575a9a2019-04-02 17:06:05 -070026 if (!vlib_num_workers ())
27 return;
28
Florin Coras653e43f2019-03-04 10:56:23 -080029 n_conns = pool_elts (connections);
30 if (n_conns > 2)
31 return;
32
33 if (n_conns > 0 && is_add)
34 vlib_node_set_state (vlib_get_main (),
35 session_queue_pre_input_node.index,
36 VLIB_NODE_STATE_POLLING);
37 else if (n_conns == 0)
38 vlib_node_set_state (vlib_get_main (),
39 session_queue_pre_input_node.index,
40 VLIB_NODE_STATE_DISABLED);
41}
42
43static ct_connection_t *
Florin Corasd4295e62019-02-22 13:11:38 -080044ct_connection_alloc (void)
45{
46 ct_connection_t *ct;
47
48 pool_get_zero (connections, ct);
49 ct->c_c_index = ct - connections;
50 ct->c_thread_index = 0;
51 ct->client_wrk = ~0;
52 ct->server_wrk = ~0;
53 return ct;
54}
55
Florin Coras653e43f2019-03-04 10:56:23 -080056static ct_connection_t *
Florin Corasd4295e62019-02-22 13:11:38 -080057ct_connection_get (u32 ct_index)
58{
59 if (pool_is_free_index (connections, ct_index))
60 return 0;
61 return pool_elt_at_index (connections, ct_index);
Florin Corasba7d8f52019-02-22 13:11:38 -080062}
63
Florin Coras653e43f2019-03-04 10:56:23 -080064static void
Florin Corasd4295e62019-02-22 13:11:38 -080065ct_connection_free (ct_connection_t * ct)
Florin Corasba7d8f52019-02-22 13:11:38 -080066{
Florin Corasba7d8f52019-02-22 13:11:38 -080067 if (CLIB_DEBUG)
Florin Corasd4295e62019-02-22 13:11:38 -080068 memset (ct, 0xfc, sizeof (*ct));
69 pool_put (connections, ct);
Florin Corasba7d8f52019-02-22 13:11:38 -080070}
71
Florin Coras2b81e3c2019-02-27 07:55:46 -080072session_t *
73ct_session_get_peer (session_t * s)
74{
75 ct_connection_t *ct, *peer_ct;
76 ct = ct_connection_get (s->connection_index);
77 peer_ct = ct_connection_get (ct->peer_index);
78 return session_get (peer_ct->c_s_index, 0);
79}
80
Florin Corasba7d8f52019-02-22 13:11:38 -080081void
Florin Coras2b81e3c2019-02-27 07:55:46 -080082ct_session_endpoint (session_t * ll, session_endpoint_t * sep)
Florin Corasba7d8f52019-02-22 13:11:38 -080083{
Florin Corasd4295e62019-02-22 13:11:38 -080084 ct_connection_t *ct;
85 ct = (ct_connection_t *) session_get_transport (ll);
86 sep->transport_proto = ct->actual_tp;
87 sep->port = ct->c_lcl_port;
88 sep->is_ip4 = ct->c_is_ip4;
Florin Corasba7d8f52019-02-22 13:11:38 -080089}
90
Florin Corasba7d8f52019-02-22 13:11:38 -080091int
Florin Coras2b81e3c2019-02-27 07:55:46 -080092ct_session_connect_notify (session_t * ss)
Florin Corasba7d8f52019-02-22 13:11:38 -080093{
94 svm_fifo_segment_private_t *seg;
Florin Coras2b81e3c2019-02-27 07:55:46 -080095 ct_connection_t *sct, *cct;
96 app_worker_t *client_wrk;
Florin Corasba7d8f52019-02-22 13:11:38 -080097 segment_manager_t *sm;
Florin Corasba7d8f52019-02-22 13:11:38 -080098 u64 segment_handle;
Florin Coras2b81e3c2019-02-27 07:55:46 -080099 int is_fail = 0;
100 session_t *cs;
101 u32 ss_index;
Florin Corasba7d8f52019-02-22 13:11:38 -0800102
Florin Coras2b81e3c2019-02-27 07:55:46 -0800103 ss_index = ss->session_index;
104 sct = (ct_connection_t *) session_get_transport (ss);
105 client_wrk = app_worker_get (sct->client_wrk);
Florin Corasba7d8f52019-02-22 13:11:38 -0800106
Florin Coras2b81e3c2019-02-27 07:55:46 -0800107 sm = segment_manager_get (ss->rx_fifo->segment_manager);
108 seg = segment_manager_get_segment_w_lock (sm, ss->rx_fifo->segment_index);
Florin Corasba7d8f52019-02-22 13:11:38 -0800109 segment_handle = segment_manager_segment_handle (sm, seg);
Florin Coras2b81e3c2019-02-27 07:55:46 -0800110
111 if (app_worker_add_segment_notify (client_wrk, segment_handle))
Florin Corasba7d8f52019-02-22 13:11:38 -0800112 {
113 clib_warning ("failed to notify client %u of new segment",
Florin Coras2b81e3c2019-02-27 07:55:46 -0800114 sct->client_wrk);
Florin Corasba7d8f52019-02-22 13:11:38 -0800115 segment_manager_segment_reader_unlock (sm);
Florin Coras2b81e3c2019-02-27 07:55:46 -0800116 session_close (ss);
Florin Corasba7d8f52019-02-22 13:11:38 -0800117 is_fail = 1;
118 }
119 else
120 {
121 segment_manager_segment_reader_unlock (sm);
122 }
123
Florin Coras2b81e3c2019-02-27 07:55:46 -0800124 /* Alloc client session */
125 cct = ct_connection_get (sct->peer_index);
Florin Corasba7d8f52019-02-22 13:11:38 -0800126
Florin Coras2b81e3c2019-02-27 07:55:46 -0800127 cs = session_alloc (0);
128 ss = session_get (ss_index, 0);
129 cs->session_type = ss->session_type;
130 cs->connection_index = sct->c_c_index;
131 cs->listener_index = SESSION_INVALID_INDEX;
132 cs->session_state = SESSION_STATE_CONNECTING;
133 cs->app_wrk_index = client_wrk->wrk_index;
134 cs->connection_index = cct->c_c_index;
135
136 cct->c_s_index = cs->session_index;
Florin Coras653e43f2019-03-04 10:56:23 -0800137 cct->client_rx_fifo = ss->tx_fifo;
138 cct->client_tx_fifo = ss->rx_fifo;
139
140 cct->client_rx_fifo->refcnt++;
141 cct->client_tx_fifo->refcnt++;
Florin Coras2b81e3c2019-02-27 07:55:46 -0800142
143 /* This will allocate fifos for the session. They won't be used for
144 * exchanging data but they will be used to close the connection if
145 * the segment manager/worker is freed */
146 if (app_worker_init_connected (client_wrk, cs))
147 {
148 session_close (ss);
149 return -1;
150 }
151
152 if (app_worker_connect_notify (client_wrk, is_fail ? 0 : cs,
153 sct->client_opaque))
154 {
155 session_close (ss);
156 return -1;
157 }
158
159 cs = session_get (cct->c_s_index, 0);
160 cs->session_state = SESSION_STATE_READY;
161
Florin Corasba7d8f52019-02-22 13:11:38 -0800162 return 0;
163}
164
Florin Coras653e43f2019-03-04 10:56:23 -0800165static int
Florin Coras2b81e3c2019-02-27 07:55:46 -0800166ct_init_local_session (app_worker_t * client_wrk, app_worker_t * server_wrk,
167 ct_connection_t * ct, session_t * ls, session_t * ll)
Florin Corasba7d8f52019-02-22 13:11:38 -0800168{
Florin Coras653e43f2019-03-04 10:56:23 -0800169 u32 round_rx_fifo_sz, round_tx_fifo_sz, sm_index, seg_size;
170 segment_manager_properties_t *props;
Florin Corasba7d8f52019-02-22 13:11:38 -0800171 svm_fifo_segment_private_t *seg;
Florin Coras653e43f2019-03-04 10:56:23 -0800172 application_t *server;
Florin Corasba7d8f52019-02-22 13:11:38 -0800173 segment_manager_t *sm;
Florin Coras653e43f2019-03-04 10:56:23 -0800174 u32 margin = 16 << 10;
Florin Corasba7d8f52019-02-22 13:11:38 -0800175 u64 segment_handle;
Florin Coras2b81e3c2019-02-27 07:55:46 -0800176 int seg_index, rv;
Florin Corasba7d8f52019-02-22 13:11:38 -0800177
Florin Corasba7d8f52019-02-22 13:11:38 -0800178 server = application_get (server_wrk->app_index);
Florin Corasba7d8f52019-02-22 13:11:38 -0800179
180 props = application_segment_manager_properties (server);
Florin Corasba7d8f52019-02-22 13:11:38 -0800181 round_rx_fifo_sz = 1 << max_log2 (props->rx_fifo_size);
182 round_tx_fifo_sz = 1 << max_log2 (props->tx_fifo_size);
Florin Coras653e43f2019-03-04 10:56:23 -0800183 seg_size = round_rx_fifo_sz + round_tx_fifo_sz + margin;
Florin Corasba7d8f52019-02-22 13:11:38 -0800184
Florin Coras2b81e3c2019-02-27 07:55:46 -0800185 sm = app_worker_get_listen_segment_manager (server_wrk, ll);
Florin Corasba7d8f52019-02-22 13:11:38 -0800186 seg_index = segment_manager_add_segment (sm, seg_size);
187 if (seg_index < 0)
188 {
189 clib_warning ("failed to add new cut-through segment");
190 return seg_index;
191 }
192 seg = segment_manager_get_segment_w_lock (sm, seg_index);
Florin Corasba7d8f52019-02-22 13:11:38 -0800193
Florin Corasba7d8f52019-02-22 13:11:38 -0800194 rv = segment_manager_try_alloc_fifos (seg, props->rx_fifo_size,
Florin Coras2b81e3c2019-02-27 07:55:46 -0800195 props->tx_fifo_size, &ls->rx_fifo,
196 &ls->tx_fifo);
Florin Corasba7d8f52019-02-22 13:11:38 -0800197 if (rv)
198 {
199 clib_warning ("failed to add fifos in cut-through segment");
200 segment_manager_segment_reader_unlock (sm);
201 goto failed;
202 }
Florin Coras2b81e3c2019-02-27 07:55:46 -0800203
Florin Corasba7d8f52019-02-22 13:11:38 -0800204 sm_index = segment_manager_index (sm);
Florin Coras653e43f2019-03-04 10:56:23 -0800205 ls->rx_fifo->master_session_index = ls->session_index;
206 ls->tx_fifo->master_session_index = ls->session_index;
Florin Corasba7d8f52019-02-22 13:11:38 -0800207 ls->rx_fifo->segment_manager = sm_index;
208 ls->tx_fifo->segment_manager = sm_index;
209 ls->rx_fifo->segment_index = seg_index;
210 ls->tx_fifo->segment_index = seg_index;
Florin Corasba7d8f52019-02-22 13:11:38 -0800211
212 segment_handle = segment_manager_segment_handle (sm, seg);
Florin Coras2b81e3c2019-02-27 07:55:46 -0800213 if ((rv = app_worker_add_segment_notify (server_wrk, segment_handle)))
Florin Corasba7d8f52019-02-22 13:11:38 -0800214 {
215 clib_warning ("failed to notify server of new segment");
216 segment_manager_segment_reader_unlock (sm);
217 goto failed;
218 }
219 segment_manager_segment_reader_unlock (sm);
Florin Coras2b81e3c2019-02-27 07:55:46 -0800220 ct->segment_handle = segment_handle;
Florin Corasba7d8f52019-02-22 13:11:38 -0800221
222 return 0;
223
224failed:
Florin Coras2b81e3c2019-02-27 07:55:46 -0800225 segment_manager_del_segment (sm, seg);
Florin Corasba7d8f52019-02-22 13:11:38 -0800226 return rv;
227}
228
Florin Coras653e43f2019-03-04 10:56:23 -0800229static int
Florin Coras2b81e3c2019-02-27 07:55:46 -0800230ct_connect (app_worker_t * client_wrk, session_t * ll,
231 session_endpoint_cfg_t * sep)
Florin Corasba7d8f52019-02-22 13:11:38 -0800232{
Florin Coras2b81e3c2019-02-27 07:55:46 -0800233 u32 cct_index, ll_index, ll_ct_index;
234 ct_connection_t *sct, *cct, *ll_ct;
235 app_worker_t *server_wrk;
236 session_t *ss;
Florin Corasba7d8f52019-02-22 13:11:38 -0800237
Florin Coras2b81e3c2019-02-27 07:55:46 -0800238 ll_index = ll->session_index;
239 ll_ct_index = ll->connection_index;
Florin Corasba7d8f52019-02-22 13:11:38 -0800240
Florin Coras2b81e3c2019-02-27 07:55:46 -0800241 cct = ct_connection_alloc ();
242 cct_index = cct->c_c_index;
243 sct = ct_connection_alloc ();
244 ll_ct = ct_connection_get (ll_ct_index);
Florin Corasba7d8f52019-02-22 13:11:38 -0800245
Florin Coras2b81e3c2019-02-27 07:55:46 -0800246 /*
247 * Alloc and init client transport
248 */
249 cct = ct_connection_get (cct_index);
250 cct->c_thread_index = 0;
251 cct->c_rmt_port = sep->port;
252 cct->c_lcl_port = 0;
253 cct->c_is_ip4 = sep->is_ip4;
254 clib_memcpy (&cct->c_rmt_ip, &sep->ip, sizeof (sep->ip));
255 cct->actual_tp = ll_ct->actual_tp;
Florin Coras653e43f2019-03-04 10:56:23 -0800256 cct->is_client = 1;
Florin Coras2b81e3c2019-02-27 07:55:46 -0800257
258 /*
259 * Init server transport
260 */
261 sct->c_thread_index = 0;
262 sct->c_rmt_port = 0;
263 sct->c_lcl_port = ll_ct->c_lcl_port;
264 sct->c_is_ip4 = sep->is_ip4;
265 clib_memcpy (&sct->c_lcl_ip, &ll_ct->c_lcl_ip, sizeof (ll_ct->c_lcl_ip));
266 sct->client_wrk = client_wrk->wrk_index;
267 sct->c_proto = TRANSPORT_PROTO_NONE;
268 sct->client_opaque = sep->opaque;
269 sct->actual_tp = ll_ct->actual_tp;
270
271 sct->peer_index = cct->c_c_index;
272 cct->peer_index = sct->c_c_index;
273
274 /*
275 * Accept server session. Client session is created only after
276 * server confirms accept.
277 */
278 ss = session_alloc (0);
279 ll = listen_session_get (ll_index);
Florin Coras9f1a5432019-03-10 21:03:20 -0700280 ss->session_type = session_type_from_proto_and_ip (TRANSPORT_PROTO_NONE,
281 sct->c_is_ip4);
Florin Coras2b81e3c2019-02-27 07:55:46 -0800282 ss->connection_index = sct->c_c_index;
283 ss->listener_index = ll->session_index;
284 ss->session_state = SESSION_STATE_CREATED;
285
286 server_wrk = application_listener_select_worker (ll);
287 ss->app_wrk_index = server_wrk->wrk_index;
288
289 sct->c_s_index = ss->session_index;
290 sct->server_wrk = ss->app_wrk_index;
291
292 if (ct_init_local_session (client_wrk, server_wrk, sct, ss, ll))
Florin Corasba7d8f52019-02-22 13:11:38 -0800293 {
Florin Coras2b81e3c2019-02-27 07:55:46 -0800294 clib_warning ("failed");
295 ct_connection_free (sct);
296 session_free (ss);
297 return -1;
Florin Corasba7d8f52019-02-22 13:11:38 -0800298 }
299
Florin Coras2b81e3c2019-02-27 07:55:46 -0800300 ss->session_state = SESSION_STATE_ACCEPTING;
301 if (app_worker_accept_notify (server_wrk, ss))
302 {
303 clib_warning ("failed");
304 ct_connection_free (sct);
305 session_free_w_fifos (ss);
306 return -1;
307 }
308
Florin Coras2b81e3c2019-02-27 07:55:46 -0800309 cct->segment_handle = sct->segment_handle;
Florin Coras653e43f2019-03-04 10:56:23 -0800310 ct_enable_disable_main_pre_input_node (1 /* is_add */ );
Florin Corasba7d8f52019-02-22 13:11:38 -0800311 return 0;
312}
313
Florin Coras653e43f2019-03-04 10:56:23 -0800314static u32
Florin Corasd4295e62019-02-22 13:11:38 -0800315ct_start_listen (u32 app_listener_index, transport_endpoint_t * tep)
316{
317 session_endpoint_cfg_t *sep;
318 ct_connection_t *ct;
319
320 sep = (session_endpoint_cfg_t *) tep;
321 ct = ct_connection_alloc ();
322 ct->server_wrk = sep->app_wrk_index;
323 ct->c_is_ip4 = sep->is_ip4;
324 clib_memcpy (&ct->c_lcl_ip, &sep->ip, sizeof (sep->ip));
325 ct->c_lcl_port = sep->port;
326 ct->actual_tp = sep->transport_proto;
Florin Coras653e43f2019-03-04 10:56:23 -0800327 ct_enable_disable_main_pre_input_node (1 /* is_add */ );
Florin Corasd4295e62019-02-22 13:11:38 -0800328 return ct->c_c_index;
329}
330
Florin Coras653e43f2019-03-04 10:56:23 -0800331static u32
Florin Corasd4295e62019-02-22 13:11:38 -0800332ct_stop_listen (u32 ct_index)
333{
334 ct_connection_t *ct;
335 ct = ct_connection_get (ct_index);
336 ct_connection_free (ct);
Florin Coras653e43f2019-03-04 10:56:23 -0800337 ct_enable_disable_main_pre_input_node (0 /* is_add */ );
Florin Corasd4295e62019-02-22 13:11:38 -0800338 return 0;
339}
340
Florin Coras653e43f2019-03-04 10:56:23 -0800341static transport_connection_t *
Florin Corasd4295e62019-02-22 13:11:38 -0800342ct_listener_get (u32 ct_index)
343{
344 return (transport_connection_t *) ct_connection_get (ct_index);
345}
346
Florin Coras653e43f2019-03-04 10:56:23 -0800347static int
Florin Coras2b81e3c2019-02-27 07:55:46 -0800348ct_session_connect (transport_endpoint_cfg_t * tep)
349{
350 session_endpoint_cfg_t *sep_ext;
351 session_endpoint_t *sep;
352 app_worker_t *app_wrk;
353 session_handle_t lh;
354 application_t *app;
355 app_listener_t *al;
356 u32 table_index;
357 session_t *ll;
358 u8 fib_proto;
359
360 sep_ext = (session_endpoint_cfg_t *) tep;
361 sep = (session_endpoint_t *) tep;
362 app_wrk = app_worker_get (sep_ext->app_wrk_index);
363 app = application_get (app_wrk->app_index);
364
365 sep->transport_proto = sep_ext->original_tp;
366 table_index = application_local_session_table (app);
367 lh = session_lookup_local_endpoint (table_index, sep);
368 if (lh == SESSION_DROP_HANDLE)
369 return VNET_API_ERROR_APP_CONNECT_FILTERED;
370
371 if (lh == SESSION_INVALID_HANDLE)
372 goto global_scope;
373
374 ll = listen_session_get_from_handle (lh);
375 al = app_listener_get_w_session (ll);
376
377 /*
378 * Break loop if rule in local table points to connecting app. This
379 * can happen if client is a generic proxy. Route connect through
380 * global table instead.
381 */
382 if (al->app_index == app->app_index)
383 goto global_scope;
384
385 return ct_connect (app_wrk, ll, sep_ext);
386
387 /*
388 * If nothing found, check the global scope for locally attached
389 * destinations. Make sure first that we're allowed to.
390 */
391
392global_scope:
393 if (session_endpoint_is_local (sep))
394 return VNET_API_ERROR_SESSION_CONNECT;
395
396 if (!application_has_global_scope (app))
397 return VNET_API_ERROR_APP_CONNECT_SCOPE;
398
399 fib_proto = session_endpoint_fib_proto (sep);
400 table_index = application_session_table (app, fib_proto);
Florin Coras9f1a5432019-03-10 21:03:20 -0700401 ll = session_lookup_listener_wildcard (table_index, sep);
Florin Coras2b81e3c2019-02-27 07:55:46 -0800402
403 if (ll)
404 return ct_connect (app_wrk, ll, sep_ext);
405
406 /* Failed to connect but no error */
407 return 1;
408}
409
Florin Coras653e43f2019-03-04 10:56:23 -0800410static void
Florin Coras2b81e3c2019-02-27 07:55:46 -0800411ct_session_close (u32 ct_index, u32 thread_index)
412{
413 ct_connection_t *ct, *peer_ct;
Florin Coras653e43f2019-03-04 10:56:23 -0800414 app_worker_t *app_wrk;
Florin Coras2b81e3c2019-02-27 07:55:46 -0800415 session_t *s;
416
417 ct = ct_connection_get (ct_index);
418 peer_ct = ct_connection_get (ct->peer_index);
419 if (peer_ct)
420 {
421 peer_ct->peer_index = ~0;
422 session_transport_closing_notify (&peer_ct->connection);
423 }
424
425 s = session_get (ct->c_s_index, 0);
Florin Coras653e43f2019-03-04 10:56:23 -0800426 app_wrk = app_worker_get_if_valid (s->app_wrk_index);
427 if (app_wrk)
428 app_worker_del_segment_notify (app_wrk, ct->segment_handle);
Florin Coras2b81e3c2019-02-27 07:55:46 -0800429 session_free_w_fifos (s);
Florin Coras653e43f2019-03-04 10:56:23 -0800430 if (ct->is_client)
431 segment_manager_dealloc_fifos (ct->client_rx_fifo, ct->client_tx_fifo);
432
Florin Coras2b81e3c2019-02-27 07:55:46 -0800433 ct_connection_free (ct);
Florin Coras653e43f2019-03-04 10:56:23 -0800434 ct_enable_disable_main_pre_input_node (0 /* is_add */ );
Florin Coras2b81e3c2019-02-27 07:55:46 -0800435}
436
Florin Coras653e43f2019-03-04 10:56:23 -0800437static transport_connection_t *
Florin Coras2b81e3c2019-02-27 07:55:46 -0800438ct_session_get (u32 ct_index, u32 thread_index)
439{
440 return (transport_connection_t *) ct_connection_get (ct_index);
441}
442
Florin Corasd4295e62019-02-22 13:11:38 -0800443static u8 *
444format_ct_connection_id (u8 * s, va_list * args)
445{
446 ct_connection_t *ct = va_arg (*args, ct_connection_t *);
447 if (!ct)
448 return s;
449 if (ct->c_is_ip4)
450 {
451 s = format (s, "[%d:%d][CT:%U] %U:%d->%U:%d", ct->c_thread_index,
452 ct->c_s_index, format_transport_proto_short, ct->actual_tp,
453 format_ip4_address, &ct->c_lcl_ip4,
454 clib_net_to_host_u16 (ct->c_lcl_port), format_ip4_address,
455 &ct->c_rmt_ip4, clib_net_to_host_u16 (ct->c_rmt_port));
456 }
457 else
458 {
459 s = format (s, "[%d:%d][CT:%U] %U:%d->%U:%d", ct->c_thread_index,
460 ct->c_s_index, format_transport_proto_short, ct->actual_tp,
461 format_ip6_address, &ct->c_lcl_ip6,
462 clib_net_to_host_u16 (ct->c_lcl_port), format_ip6_address,
463 &ct->c_rmt_ip6, clib_net_to_host_u16 (ct->c_rmt_port));
464 }
465
466 return s;
467}
468
Florin Corasf940f8a2019-03-06 10:44:38 -0800469static int
470ct_custom_tx (void *session)
471{
472 session_t *s = (session_t *) session;
473 if (session_has_transport (s))
474 return 0;
475 return ct_session_tx (s);
476}
477
Florin Coras317b8e02019-04-17 09:57:46 -0700478static int
479ct_app_rx_evt (transport_connection_t * tc)
480{
481 ct_connection_t *ct = (ct_connection_t *) tc, *peer_ct;
482 session_t *ps;
483
484 peer_ct = ct_connection_get (ct->peer_index);
485 if (!peer_ct)
486 return -1;
487 ps = session_get (peer_ct->c_s_index, peer_ct->c_thread_index);
488 return session_dequeue_notify (ps);
489}
490
Florin Coras653e43f2019-03-04 10:56:23 -0800491static u8 *
Florin Corasd4295e62019-02-22 13:11:38 -0800492format_ct_listener (u8 * s, va_list * args)
493{
494 u32 tc_index = va_arg (*args, u32);
495 u32 __clib_unused verbose = va_arg (*args, u32);
496 ct_connection_t *ct = ct_connection_get (tc_index);
497 s = format (s, "%-50U", format_ct_connection_id, ct);
498 if (verbose)
499 s = format (s, "%-15s", "LISTEN");
500 return s;
501}
502
Florin Coras653e43f2019-03-04 10:56:23 -0800503static u8 *
Florin Coras2b81e3c2019-02-27 07:55:46 -0800504format_ct_connection (u8 * s, va_list * args)
505{
506 ct_connection_t *ct = va_arg (*args, ct_connection_t *);
507 u32 verbose = va_arg (*args, u32);
508
509 if (!ct)
510 return s;
511 s = format (s, "%-50U", format_ct_connection_id, ct);
512 if (verbose)
513 {
514 s = format (s, "%-15s", "ESTABLISHED");
515 if (verbose > 1)
516 {
517 s = format (s, "\n");
518 }
519 }
520 return s;
521}
522
Florin Coras653e43f2019-03-04 10:56:23 -0800523static u8 *
Florin Coras2b81e3c2019-02-27 07:55:46 -0800524format_ct_session (u8 * s, va_list * args)
525{
526 u32 ct_index = va_arg (*args, u32);
527 u32 __clib_unused thread_index = va_arg (*args, u32);
528 u32 verbose = va_arg (*args, u32);
529 ct_connection_t *ct;
530
531 ct = ct_connection_get (ct_index);
532 if (!ct)
533 {
534 s = format (s, "empty\n");
535 return s;
536 }
537
538 s = format (s, "%U", format_ct_connection, ct, verbose);
539 return s;
540}
541
Florin Corasd4295e62019-02-22 13:11:38 -0800542/* *INDENT-OFF* */
543const static transport_proto_vft_t cut_thru_proto = {
544 .start_listen = ct_start_listen,
545 .stop_listen = ct_stop_listen,
546 .get_listener = ct_listener_get,
Florin Coras2b81e3c2019-02-27 07:55:46 -0800547 .connect = ct_session_connect,
548 .close = ct_session_close,
549 .get_connection = ct_session_get,
Florin Corasf940f8a2019-03-06 10:44:38 -0800550 .custom_tx = ct_custom_tx,
Florin Coras317b8e02019-04-17 09:57:46 -0700551 .app_rx_evt = ct_app_rx_evt,
Florin Corasd4295e62019-02-22 13:11:38 -0800552 .tx_type = TRANSPORT_TX_INTERNAL,
553 .service_type = TRANSPORT_SERVICE_APP,
554 .format_listener = format_ct_listener,
Florin Coras2b81e3c2019-02-27 07:55:46 -0800555 .format_connection = format_ct_session,
Florin Corasd4295e62019-02-22 13:11:38 -0800556};
557/* *INDENT-ON* */
558
Florin Coras653e43f2019-03-04 10:56:23 -0800559int
560ct_session_tx (session_t * s)
561{
562 ct_connection_t *ct, *peer_ct;
563 session_t *peer_s;
564
565 ct = (ct_connection_t *) session_get_transport (s);
566 peer_ct = ct_connection_get (ct->peer_index);
567 if (!peer_ct)
568 return -1;
569 peer_s = session_get (peer_ct->c_s_index, 0);
570 if (peer_s->session_state >= SESSION_STATE_TRANSPORT_CLOSING)
571 return 0;
572 return session_enqueue_notify (peer_s);
573}
574
Florin Corasd4295e62019-02-22 13:11:38 -0800575static clib_error_t *
576ct_transport_init (vlib_main_t * vm)
577{
578 transport_register_protocol (TRANSPORT_PROTO_NONE, &cut_thru_proto,
579 FIB_PROTOCOL_IP4, ~0);
Florin Coras653e43f2019-03-04 10:56:23 -0800580 transport_register_protocol (TRANSPORT_PROTO_NONE, &cut_thru_proto,
581 FIB_PROTOCOL_IP6, ~0);
Florin Corasd4295e62019-02-22 13:11:38 -0800582 return 0;
583}
584
585VLIB_INIT_FUNCTION (ct_transport_init);
586
Florin Corasba7d8f52019-02-22 13:11:38 -0800587/*
588 * fd.io coding-style-patch-verification: ON
589 *
590 * Local Variables:
591 * eval: (c-set-style "gnu")
592 * End:
593 */