blob: 879b3823e5d1329fd40cfbdfd2709ed81af16b44 [file] [log] [blame]
Dave Barach68b0fb02017-02-28 15:15:56 -05001/*
2 * Copyright (c) 2017 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#ifndef __included_session_h__
16#define __included_session_h__
17
Florin Coras04e53442017-07-16 17:12:15 -070018#include <vnet/session/stream_session.h>
19#include <vnet/session/session_lookup.h>
20#include <vnet/session/transport_interface.h>
Florin Coras3e350af2017-03-30 02:54:28 -070021#include <vnet/session/session_debug.h>
Florin Coras6cf30ad2017-04-04 23:08:23 -070022#include <vnet/session/segment_manager.h>
Florin Corase86a8ed2018-01-05 03:20:25 -080023#include <svm/queue.h>
Dave Barach68b0fb02017-02-28 15:15:56 -050024
25#define HALF_OPEN_LOOKUP_INVALID_VALUE ((u64)~0)
26#define INVALID_INDEX ((u32)~0)
Florin Corasc3ddea82017-11-27 03:12:00 -080027#define SESSION_PROXY_LISTENER_INDEX ((u32)~0 - 1)
Florin Coras5fda7a32018-02-14 08:04:31 -080028#define SESSION_LOCAL_HANDLE_PREFIX 0x7FFFFFFF
Dave Barach68b0fb02017-02-28 15:15:56 -050029
30/* TODO decide how much since we have pre-data as well */
31#define MAX_HDRS_LEN 100 /* Max number of bytes for headers */
32
33typedef enum
34{
Florin Corasa5464812017-04-19 13:00:05 -070035 FIFO_EVENT_APP_RX,
36 FIFO_EVENT_APP_TX,
Dave Barach68b0fb02017-02-28 15:15:56 -050037 FIFO_EVENT_TIMEOUT,
Florin Corasa5464812017-04-19 13:00:05 -070038 FIFO_EVENT_DISCONNECT,
Dave Barache5f1d272017-05-10 13:34:04 -040039 FIFO_EVENT_BUILTIN_RX,
40 FIFO_EVENT_RPC,
Florin Coras3c2fed52018-07-04 04:15:05 -070041} session_evt_type_t;
Dave Barach68b0fb02017-02-28 15:15:56 -050042
Dave Wallace33e002b2017-09-06 01:20:02 -040043static inline const char *
Florin Coras3c2fed52018-07-04 04:15:05 -070044fifo_event_type_str (session_evt_type_t et)
Dave Wallace33e002b2017-09-06 01:20:02 -040045{
46 switch (et)
47 {
48 case FIFO_EVENT_APP_RX:
49 return "FIFO_EVENT_APP_RX";
50 case FIFO_EVENT_APP_TX:
51 return "FIFO_EVENT_APP_TX";
52 case FIFO_EVENT_TIMEOUT:
53 return "FIFO_EVENT_TIMEOUT";
54 case FIFO_EVENT_DISCONNECT:
55 return "FIFO_EVENT_DISCONNECT";
56 case FIFO_EVENT_BUILTIN_RX:
57 return "FIFO_EVENT_BUILTIN_RX";
58 case FIFO_EVENT_RPC:
59 return "FIFO_EVENT_RPC";
60 default:
61 return "UNKNOWN FIFO EVENT";
62 }
63}
64
Florin Coras3c2fed52018-07-04 04:15:05 -070065typedef enum
66{
67 SESSION_MQ_IO_EVT_RING,
68 SESSION_MQ_CTRL_EVT_RING,
69 SESSION_MQ_N_RINGS
70} session_mq_rings_e;
71
Florin Coras3e350af2017-03-30 02:54:28 -070072#define foreach_session_input_error \
Dave Barach68b0fb02017-02-28 15:15:56 -050073_(NO_SESSION, "No session drops") \
74_(NO_LISTENER, "No listener for dst port drops") \
75_(ENQUEUED, "Packets pushed into rx fifo") \
76_(NOT_READY, "Session not ready packets") \
77_(FIFO_FULL, "Packets dropped for lack of rx fifo space") \
78_(EVENT_FIFO_FULL, "Events not sent for lack of event fifo space") \
79_(API_QUEUE_FULL, "Sessions not created for lack of API queue space") \
80_(NEW_SEG_NO_SPACE, "Created segment, couldn't allocate a fifo pair") \
Florin Corasa332c462018-01-31 06:52:17 -080081_(NO_SPACE, "Couldn't allocate a fifo pair") \
82_(SEG_CREATE, "Couldn't create a new segment")
Dave Barach68b0fb02017-02-28 15:15:56 -050083
84typedef enum
85{
86#define _(sym,str) SESSION_ERROR_##sym,
87 foreach_session_input_error
88#undef _
89 SESSION_N_ERROR,
90} session_error_t;
91
Dave Barache5f1d272017-05-10 13:34:04 -040092typedef struct
93{
94 void *fp;
95 void *arg;
Florin Coras3c2fed52018-07-04 04:15:05 -070096} session_rpc_args_t;
Dave Barache5f1d272017-05-10 13:34:04 -040097
Florin Corasf8f516a2018-02-08 15:10:09 -080098typedef u64 session_handle_t;
99
Florin Coras6792ec02017-03-13 03:49:51 -0700100/* *INDENT-OFF* */
Florin Coras3c2fed52018-07-04 04:15:05 -0700101typedef struct
102{
Florin Coras6792ec02017-03-13 03:49:51 -0700103 u8 event_type;
Florin Coras3cbc04b2017-10-02 00:18:51 -0700104 u8 postponed;
Florin Coras3c2fed52018-07-04 04:15:05 -0700105 union
106 {
107 svm_fifo_t *fifo;
108 session_handle_t session_handle;
109 session_rpc_args_t rpc_args;
110 struct
111 {
112 u8 data[0];
113 };
114 };
115} __clib_packed session_fifo_event_t;
Florin Coras6792ec02017-03-13 03:49:51 -0700116/* *INDENT-ON* */
Dave Barach68b0fb02017-02-28 15:15:56 -0500117
Florin Coras3c2fed52018-07-04 04:15:05 -0700118#define SESSION_MSG_NULL { }
119
Florin Coras8e43d042018-05-04 15:46:57 -0700120typedef struct session_dgram_pre_hdr_
121{
122 u32 data_length;
123 u32 data_offset;
124} session_dgram_pre_hdr_t;
125
126/* *INDENT-OFF* */
127typedef CLIB_PACKED (struct session_dgram_header_
128{
129 u32 data_length;
130 u32 data_offset;
131 ip46_address_t rmt_ip;
132 ip46_address_t lcl_ip;
133 u16 rmt_port;
134 u16 lcl_port;
135 u8 is_ip4;
136}) session_dgram_hdr_t;
137/* *INDENT-ON* */
138
139#define SESSION_CONN_ID_LEN 37
140#define SESSION_CONN_HDR_LEN 45
141
142STATIC_ASSERT (sizeof (session_dgram_hdr_t) == (SESSION_CONN_ID_LEN + 8),
143 "session conn id wrong length");
144
145typedef struct session_tx_context_
146{
147 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
148 stream_session_t *s;
149 transport_proto_vft_t *transport_vft;
150 transport_connection_t *tc;
151 vlib_buffer_t *b;
152 u32 max_dequeue;
153 u32 snd_space;
154 u32 left_to_snd;
155 u32 tx_offset;
156 u32 max_len_to_snd;
157 u16 deq_per_first_buf;
158 u16 deq_per_buf;
159 u16 snd_mss;
Florin Corasf08f26d2018-05-10 13:20:47 -0700160 u16 n_segs_per_evt;
Florin Coras8e43d042018-05-04 15:46:57 -0700161 u8 n_bufs_per_seg;
162 CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
163 session_dgram_hdr_t hdr;
164} session_tx_context_t;
165
Dave Barach68b0fb02017-02-28 15:15:56 -0500166/* Forward definition */
167typedef struct _session_manager_main session_manager_main_t;
168
169typedef int
170 (session_fifo_rx_fn) (vlib_main_t * vm, vlib_node_runtime_t * node,
Dave Barach68b0fb02017-02-28 15:15:56 -0500171 session_fifo_event_t * e0, stream_session_t * s0,
Florin Coras8e43d042018-05-04 15:46:57 -0700172 int *n_tx_pkts);
Dave Barach68b0fb02017-02-28 15:15:56 -0500173
Florin Corasd79b41e2017-03-04 05:37:52 -0800174extern session_fifo_rx_fn session_tx_fifo_peek_and_snd;
175extern session_fifo_rx_fn session_tx_fifo_dequeue_and_snd;
Florin Coras371ca502018-02-21 12:07:41 -0800176extern session_fifo_rx_fn session_tx_fifo_dequeue_internal;
Dave Barach68b0fb02017-02-28 15:15:56 -0500177
Florin Coras6534b7a2017-07-18 05:38:03 -0400178u8 session_node_lookup_fifo_event (svm_fifo_t * f, session_fifo_event_t * e);
179
Dave Barach68b0fb02017-02-28 15:15:56 -0500180struct _session_manager_main
181{
Dave Barach68b0fb02017-02-28 15:15:56 -0500182 /** Per worker thread session pools */
183 stream_session_t **sessions;
184
Florin Coras84a30ef2018-01-24 10:49:23 -0800185 /** Per worker-thread session pool peekers rw locks */
186 clib_rwlock_t *peekers_rw_locks;
Florin Coras3cbc04b2017-10-02 00:18:51 -0700187
Florin Coras3cbc04b2017-10-02 00:18:51 -0700188 /** Per-proto, per-worker enqueue epoch counters */
Florin Coras93e65802017-11-29 00:07:11 -0500189 u32 *current_enqueue_epoch[TRANSPORT_N_PROTO];
Dave Barach68b0fb02017-02-28 15:15:56 -0500190
Florin Coras3cbc04b2017-10-02 00:18:51 -0700191 /** Per-proto, per-worker thread vector of sessions to enqueue */
192 u32 **session_to_enqueue[TRANSPORT_N_PROTO];
Dave Barach68b0fb02017-02-28 15:15:56 -0500193
194 /** per-worker tx buffer free lists */
195 u32 **tx_buffers;
196
197 /** Per worker-thread vector of partially read events */
Dave Barachacd2a6a2017-05-16 17:41:34 -0400198 session_fifo_event_t **free_event_vector;
Dave Barach68b0fb02017-02-28 15:15:56 -0500199
200 /** per-worker active event vectors */
Dave Barachacd2a6a2017-05-16 17:41:34 -0400201 session_fifo_event_t **pending_event_vector;
Dave Barach68b0fb02017-02-28 15:15:56 -0500202
Florin Coras3cbc04b2017-10-02 00:18:51 -0700203 /** per-worker postponed disconnects */
204 session_fifo_event_t **pending_disconnects;
205
Florin Coras8e43d042018-05-04 15:46:57 -0700206 /** per-worker session context */
207 session_tx_context_t *ctx;
208
Dave Barach68b0fb02017-02-28 15:15:56 -0500209 /** vpp fifo event queue */
Florin Coras3c2fed52018-07-04 04:15:05 -0700210 svm_msg_q_t **vpp_event_queues;
Dave Barach68b0fb02017-02-28 15:15:56 -0500211
Florin Corasb384b542018-01-15 01:08:33 -0800212 /** Event queues memfd segment initialized only if so configured */
213 ssvm_private_t evt_qs_segment;
214
Florin Coras93e65802017-11-29 00:07:11 -0500215 /** Unique segment name counter */
216 u32 unique_segment_name_counter;
217
218 /** Per transport rx function that can either dequeue or peek */
Florin Coras561af9b2017-12-09 10:19:43 -0800219 session_fifo_rx_fn **session_tx_fns;
220
221 /** Per session type output nodes. Could optimize to group nodes by
222 * fib but lookup would then require session type parsing in session node.
223 * Trade memory for speed, for now */
224 u32 *session_type_to_next;
Florin Coras93e65802017-11-29 00:07:11 -0500225
226 /** Session manager is enabled */
227 u8 is_enabled;
228
Dave Barach10d8cc62017-05-30 09:30:07 -0400229 /** vpp fifo event queue configured length */
230 u32 configured_event_queue_length;
231
Florin Coras93e65802017-11-29 00:07:11 -0500232 /*
233 * Config parameters
234 */
235
Florin Corasb384b542018-01-15 01:08:33 -0800236 /** Session ssvm segment configs*/
237 uword session_baseva;
Florin Corasa332c462018-01-31 06:52:17 -0800238 uword session_va_space_size;
Florin Corasb384b542018-01-15 01:08:33 -0800239 u32 evt_qs_segment_size;
240 u8 evt_qs_use_memfd_seg;
241
242 /** Session table size parameters */
Florin Coras66b11312017-07-31 17:18:03 -0700243 u32 configured_v4_session_table_buckets;
244 u32 configured_v4_session_table_memory;
245 u32 configured_v4_halfopen_table_buckets;
246 u32 configured_v4_halfopen_table_memory;
247 u32 configured_v6_session_table_buckets;
248 u32 configured_v6_session_table_memory;
249 u32 configured_v6_halfopen_table_buckets;
250 u32 configured_v6_halfopen_table_memory;
251
Florin Coras93e65802017-11-29 00:07:11 -0500252 /** Transport table (preallocation) size parameters */
253 u32 local_endpoints_table_memory;
254 u32 local_endpoints_table_buckets;
Florin Corase04c2992017-03-01 08:17:34 -0800255
Dave Barach2c25a622017-06-26 11:35:07 -0400256 /** Preallocate session config parameter */
257 u32 preallocated_sessions;
258
Florin Corasc1a448b2018-04-20 10:51:49 -0700259#if SESSION_DEBUG
Florin Coras3e350af2017-03-30 02:54:28 -0700260 /**
261 * last event poll time by thread
262 * Debug only. Will cause false cache-line sharing as-is
263 */
264 f64 *last_event_poll_by_thread;
265#endif
266
Dave Barach68b0fb02017-02-28 15:15:56 -0500267};
268
269extern session_manager_main_t session_manager_main;
Florin Corase04c2992017-03-01 08:17:34 -0800270extern vlib_node_registration_t session_queue_node;
Florin Corasfd542f12018-05-16 19:28:24 -0700271extern vlib_node_registration_t session_queue_process_node;
272
273#define SESSION_Q_PROCESS_FLUSH_FRAMES 1
274#define SESSION_Q_PROCESS_STOP 2
Dave Barach68b0fb02017-02-28 15:15:56 -0500275
276/*
277 * Session manager function
278 */
279always_inline session_manager_main_t *
280vnet_get_session_manager_main ()
281{
282 return &session_manager_main;
283}
284
Dave Barach2c25a622017-06-26 11:35:07 -0400285always_inline u8
286stream_session_is_valid (u32 si, u8 thread_index)
287{
288 stream_session_t *s;
289 s = pool_elt_at_index (session_manager_main.sessions[thread_index], si);
290 if (s->thread_index != thread_index || s->session_index != si
Dave Barach52851e62017-08-07 09:35:25 -0400291 /* || s->server_rx_fifo->master_session_index != si
292 || s->server_tx_fifo->master_session_index != si
293 || s->server_rx_fifo->master_thread_index != thread_index
294 || s->server_tx_fifo->master_thread_index != thread_index */ )
Dave Barach2c25a622017-06-26 11:35:07 -0400295 return 0;
296 return 1;
297}
298
Florin Coras3cbc04b2017-10-02 00:18:51 -0700299stream_session_t *session_alloc (u32 thread_index);
Florin Coras371ca502018-02-21 12:07:41 -0800300int session_alloc_fifos (segment_manager_t * sm, stream_session_t * s);
301void session_free (stream_session_t * s);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700302
Dave Barach68b0fb02017-02-28 15:15:56 -0500303always_inline stream_session_t *
Florin Corascea194d2017-10-02 00:18:51 -0700304session_get (u32 si, u32 thread_index)
Dave Barach68b0fb02017-02-28 15:15:56 -0500305{
Dave Barach2c25a622017-06-26 11:35:07 -0400306 ASSERT (stream_session_is_valid (si, thread_index));
Dave Barach68b0fb02017-02-28 15:15:56 -0500307 return pool_elt_at_index (session_manager_main.sessions[thread_index], si);
308}
309
310always_inline stream_session_t *
Florin Coras3cbc04b2017-10-02 00:18:51 -0700311session_get_if_valid (u64 si, u32 thread_index)
Dave Barach68b0fb02017-02-28 15:15:56 -0500312{
313 if (thread_index >= vec_len (session_manager_main.sessions))
314 return 0;
315
316 if (pool_is_free_index (session_manager_main.sessions[thread_index], si))
317 return 0;
318
Dave Barach2c25a622017-06-26 11:35:07 -0400319 ASSERT (stream_session_is_valid (si, thread_index));
Dave Barach68b0fb02017-02-28 15:15:56 -0500320 return pool_elt_at_index (session_manager_main.sessions[thread_index], si);
321}
322
Florin Corasf8f516a2018-02-08 15:10:09 -0800323always_inline session_handle_t
Florin Coras3cbc04b2017-10-02 00:18:51 -0700324session_handle (stream_session_t * s)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700325{
326 return ((u64) s->thread_index << 32) | (u64) s->session_index;
327}
328
329always_inline u32
Florin Corasf8f516a2018-02-08 15:10:09 -0800330session_index_from_handle (session_handle_t handle)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700331{
332 return handle & 0xFFFFFFFF;
333}
334
335always_inline u32
Florin Corasf8f516a2018-02-08 15:10:09 -0800336session_thread_from_handle (session_handle_t handle)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700337{
338 return handle >> 32;
339}
340
341always_inline void
Florin Corasf8f516a2018-02-08 15:10:09 -0800342session_parse_handle (session_handle_t handle, u32 * index,
343 u32 * thread_index)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700344{
Florin Corascea194d2017-10-02 00:18:51 -0700345 *index = session_index_from_handle (handle);
346 *thread_index = session_thread_from_handle (handle);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700347}
348
349always_inline stream_session_t *
Florin Corasf8f516a2018-02-08 15:10:09 -0800350session_get_from_handle (session_handle_t handle)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700351{
352 session_manager_main_t *smm = &session_manager_main;
Florin Corasf8f516a2018-02-08 15:10:09 -0800353 u32 session_index, thread_index;
354 session_parse_handle (handle, &session_index, &thread_index);
355 return pool_elt_at_index (smm->sessions[thread_index], session_index);
356}
357
358always_inline stream_session_t *
359session_get_from_handle_if_valid (session_handle_t handle)
360{
361 u32 session_index, thread_index;
362 session_parse_handle (handle, &session_index, &thread_index);
363 return session_get_if_valid (session_index, thread_index);
364}
365
366always_inline u8
367session_handle_is_local (session_handle_t handle)
368{
Florin Coras5fda7a32018-02-14 08:04:31 -0800369 if ((handle >> 32) == SESSION_LOCAL_HANDLE_PREFIX)
Florin Corasf8f516a2018-02-08 15:10:09 -0800370 return 1;
371 return 0;
372}
373
374always_inline transport_proto_t
375session_type_transport_proto (session_type_t st)
376{
377 return (st >> 1);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700378}
379
Florin Coras5fda7a32018-02-14 08:04:31 -0800380always_inline u8
381session_type_is_ip4 (session_type_t st)
382{
383 return (st & 1);
384}
385
Florin Coras561af9b2017-12-09 10:19:43 -0800386always_inline transport_proto_t
387session_get_transport_proto (stream_session_t * s)
388{
389 return (s->session_type >> 1);
390}
391
Florin Corasf8f516a2018-02-08 15:10:09 -0800392always_inline fib_protocol_t
393session_get_fib_proto (stream_session_t * s)
394{
395 u8 is_ip4 = s->session_type & 1;
396 return (is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6);
397}
398
Florin Coras561af9b2017-12-09 10:19:43 -0800399always_inline session_type_t
400session_type_from_proto_and_ip (transport_proto_t proto, u8 is_ip4)
401{
402 return (proto << 1 | is_ip4);
403}
404
Florin Corasf8f516a2018-02-08 15:10:09 -0800405always_inline u8
406session_has_transport (stream_session_t * s)
407{
408 return (session_get_transport_proto (s) != TRANSPORT_PROTO_NONE);
409}
410
Florin Corasf08f26d2018-05-10 13:20:47 -0700411transport_service_type_t session_transport_service_type (stream_session_t *);
412transport_tx_fn_type_t session_transport_tx_fn_type (stream_session_t *);
413u8 session_tx_is_dgram (stream_session_t * s);
Florin Coras7fb0fe12018-04-09 09:24:52 -0700414
Florin Coras3cbc04b2017-10-02 00:18:51 -0700415/**
416 * Acquires a lock that blocks a session pool from expanding.
417 *
418 * This is typically used for safely peeking into other threads'
419 * pools in order to clone elements. Lock should be dropped as soon
420 * as possible by calling @ref session_pool_remove_peeker.
421 *
422 * NOTE: Avoid using pool_elt_at_index while the lock is held because
423 * it may lead to free elt bitmap expansion/contraction!
424 */
425always_inline void
426session_pool_add_peeker (u32 thread_index)
427{
428 session_manager_main_t *smm = &session_manager_main;
429 if (thread_index == vlib_get_thread_index ())
430 return;
Florin Coras84a30ef2018-01-24 10:49:23 -0800431 clib_rwlock_reader_lock (&smm->peekers_rw_locks[thread_index]);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700432}
433
434always_inline void
435session_pool_remove_peeker (u32 thread_index)
436{
437 session_manager_main_t *smm = &session_manager_main;
438 if (thread_index == vlib_get_thread_index ())
439 return;
Florin Coras84a30ef2018-01-24 10:49:23 -0800440 clib_rwlock_reader_unlock (&smm->peekers_rw_locks[thread_index]);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700441}
442
443/**
444 * Get session from handle and 'lock' pool resize if not in same thread
445 *
446 * Caller should drop the peek 'lock' as soon as possible.
447 */
448always_inline stream_session_t *
449session_get_from_handle_safe (u64 handle)
450{
451 session_manager_main_t *smm = &session_manager_main;
452 u32 thread_index = session_thread_from_handle (handle);
453 if (thread_index == vlib_get_thread_index ())
454 {
455 return pool_elt_at_index (smm->sessions[thread_index],
456 session_index_from_handle (handle));
457 }
458 else
459 {
460 session_pool_add_peeker (thread_index);
461 /* Don't use pool_elt_at index. See @ref session_pool_add_peeker */
462 return smm->sessions[thread_index] + session_index_from_handle (handle);
463 }
464}
465
Dave Barach68b0fb02017-02-28 15:15:56 -0500466always_inline u32
Florin Corasd2aab832018-05-22 11:39:59 -0700467transport_max_rx_enqueue (transport_connection_t * tc)
Dave Barach68b0fb02017-02-28 15:15:56 -0500468{
Florin Corascea194d2017-10-02 00:18:51 -0700469 stream_session_t *s = session_get (tc->s_index, tc->thread_index);
Dave Barach68b0fb02017-02-28 15:15:56 -0500470 return svm_fifo_max_enqueue (s->server_rx_fifo);
471}
472
Florin Corase04c2992017-03-01 08:17:34 -0800473always_inline u32
Florin Corasd2aab832018-05-22 11:39:59 -0700474transport_rx_fifo_size (transport_connection_t * tc)
Florin Corase04c2992017-03-01 08:17:34 -0800475{
Florin Corascea194d2017-10-02 00:18:51 -0700476 stream_session_t *s = session_get (tc->s_index, tc->thread_index);
Florin Corase04c2992017-03-01 08:17:34 -0800477 return s->server_rx_fifo->nitems;
478}
479
Florin Coras3cbc04b2017-10-02 00:18:51 -0700480always_inline u32
Florin Corasd2aab832018-05-22 11:39:59 -0700481transport_tx_fifo_size (transport_connection_t * tc)
482{
483 stream_session_t *s = session_get (tc->s_index, tc->thread_index);
484 return s->server_tx_fifo->nitems;
485}
486
487always_inline u32
Florin Coras3cbc04b2017-10-02 00:18:51 -0700488session_get_index (stream_session_t * s)
489{
490 return (s - session_manager_main.sessions[s->thread_index]);
491}
492
493always_inline stream_session_t *
494session_clone_safe (u32 session_index, u32 thread_index)
495{
496 stream_session_t *old_s, *new_s;
497 u32 current_thread_index = vlib_get_thread_index ();
498
499 /* If during the memcpy pool is reallocated AND the memory allocator
500 * decides to give the old chunk of memory to somebody in a hurry to
501 * scribble something on it, we have a problem. So add this thread as
502 * a session pool peeker.
503 */
504 session_pool_add_peeker (thread_index);
505 new_s = session_alloc (current_thread_index);
506 old_s = session_manager_main.sessions[thread_index] + session_index;
507 clib_memcpy (new_s, old_s, sizeof (*new_s));
508 session_pool_remove_peeker (thread_index);
509 new_s->thread_index = current_thread_index;
510 new_s->session_index = session_get_index (new_s);
511 return new_s;
512}
513
514transport_connection_t *session_get_transport (stream_session_t * s);
515
Florin Coras25579b42018-06-06 17:55:02 -0700516u32 session_tx_fifo_max_dequeue (transport_connection_t * tc);
Florin Coras93992a92017-05-24 18:03:56 -0700517
Dave Barach68b0fb02017-02-28 15:15:56 -0500518int
Florin Coras3cbc04b2017-10-02 00:18:51 -0700519session_enqueue_stream_connection (transport_connection_t * tc,
520 vlib_buffer_t * b, u32 offset,
521 u8 queue_event, u8 is_in_order);
Florin Coras7fb0fe12018-04-09 09:24:52 -0700522int session_enqueue_dgram_connection (stream_session_t * s,
523 session_dgram_hdr_t * hdr,
524 vlib_buffer_t * b, u8 proto,
525 u8 queue_event);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700526int stream_session_peek_bytes (transport_connection_t * tc, u8 * buffer,
527 u32 offset, u32 max_bytes);
Dave Barach68b0fb02017-02-28 15:15:56 -0500528u32 stream_session_dequeue_drop (transport_connection_t * tc, u32 max_bytes);
529
Florin Coras3cbc04b2017-10-02 00:18:51 -0700530int session_stream_connect_notify (transport_connection_t * tc, u8 is_fail);
531int session_dgram_connect_notify (transport_connection_t * tc,
532 u32 old_thread_index,
533 stream_session_t ** new_session);
Florin Coras0d60a0f2018-06-29 02:02:08 -0700534int session_dequeue_notify (stream_session_t * s);
Florin Corasc28764f2017-04-26 00:08:42 -0700535void stream_session_init_fifos_pointers (transport_connection_t * tc,
536 u32 rx_pointer, u32 tx_pointer);
Florin Corase69f4952017-03-07 10:06:24 -0800537
Dave Barach68b0fb02017-02-28 15:15:56 -0500538void stream_session_accept_notify (transport_connection_t * tc);
539void stream_session_disconnect_notify (transport_connection_t * tc);
540void stream_session_delete_notify (transport_connection_t * tc);
541void stream_session_reset_notify (transport_connection_t * tc);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700542int stream_session_accept (transport_connection_t * tc, u32 listener_index,
543 u8 notify);
544int session_open (u32 app_index, session_endpoint_t * tep, u32 opaque);
Florin Corascea194d2017-10-02 00:18:51 -0700545int stream_session_listen (stream_session_t * s, session_endpoint_t * tep);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700546int stream_session_stop_listen (stream_session_t * s);
Dave Barach68b0fb02017-02-28 15:15:56 -0500547void stream_session_disconnect (stream_session_t * s);
Florin Coras2f8d8fa2018-01-26 06:36:04 -0800548void stream_session_disconnect_transport (stream_session_t * s);
Dave Barach68b0fb02017-02-28 15:15:56 -0500549void stream_session_cleanup (stream_session_t * s);
Florin Coras3c2fed52018-07-04 04:15:05 -0700550int session_send_io_evt_to_thread (svm_fifo_t * f,
551 session_evt_type_t evt_type);
552int session_send_io_evt_to_thread_custom (svm_fifo_t * f, u32 thread_index,
553 session_evt_type_t evt_type);
554void session_send_rpc_evt_to_thread (u32 thread_index, void *fp,
555 void *rpc_args);
Florin Corasb384b542018-01-15 01:08:33 -0800556ssvm_private_t *session_manager_get_evt_q_segment (void);
Florin Coras3eb50622017-07-13 01:24:57 -0400557
Dave Barach68b0fb02017-02-28 15:15:56 -0500558u8 *format_stream_session (u8 * s, va_list * args);
Florin Coras3eb50622017-07-13 01:24:57 -0400559uword unformat_stream_session (unformat_input_t * input, va_list * args);
560uword unformat_transport_connection (unformat_input_t * input,
561 va_list * args);
562
Florin Coras561af9b2017-12-09 10:19:43 -0800563void session_register_transport (transport_proto_t transport_proto,
564 const transport_proto_vft_t * vft, u8 is_ip4,
565 u32 output_node);
Dave Barach68b0fb02017-02-28 15:15:56 -0500566
Florin Corase04c2992017-03-01 08:17:34 -0800567clib_error_t *vnet_session_enable_disable (vlib_main_t * vm, u8 is_en);
568
Florin Coras3c2fed52018-07-04 04:15:05 -0700569always_inline svm_msg_q_t *
Florin Coras6cf30ad2017-04-04 23:08:23 -0700570session_manager_get_vpp_event_queue (u32 thread_index)
571{
572 return session_manager_main.vpp_event_queues[thread_index];
573}
574
Florin Coras3cbc04b2017-10-02 00:18:51 -0700575int session_manager_flush_enqueue_events (u8 proto, u32 thread_index);
Florin Coras7fb0fe12018-04-09 09:24:52 -0700576int session_manager_flush_all_enqueue_events (u8 transport_proto);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700577
578always_inline u64
579listen_session_get_handle (stream_session_t * s)
580{
581 ASSERT (s->session_state == SESSION_STATE_LISTENING);
Florin Coras5c9083d2018-04-13 06:39:07 -0700582 return session_handle (s);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700583}
584
585always_inline stream_session_t *
Florin Corasf8f516a2018-02-08 15:10:09 -0800586listen_session_get_from_handle (session_handle_t handle)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700587{
Florin Coras5c9083d2018-04-13 06:39:07 -0700588 return session_get_from_handle (handle);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700589}
590
Florin Coras371ca502018-02-21 12:07:41 -0800591always_inline void
Florin Coras5c9083d2018-04-13 06:39:07 -0700592listen_session_parse_handle (session_handle_t handle, u32 * index,
593 u32 * thread_index)
Florin Coras371ca502018-02-21 12:07:41 -0800594{
Florin Coras5c9083d2018-04-13 06:39:07 -0700595 session_parse_handle (handle, index, thread_index);
Florin Coras371ca502018-02-21 12:07:41 -0800596}
597
Florin Coras6cf30ad2017-04-04 23:08:23 -0700598always_inline stream_session_t *
Florin Coras5c9083d2018-04-13 06:39:07 -0700599listen_session_new (u8 thread_index, session_type_t type)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700600{
601 stream_session_t *s;
Florin Coras5c9083d2018-04-13 06:39:07 -0700602 s = session_alloc (thread_index);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700603 s->session_type = type;
604 s->session_state = SESSION_STATE_LISTENING;
Florin Coras6cf30ad2017-04-04 23:08:23 -0700605 return s;
606}
607
608always_inline stream_session_t *
Florin Coras5c9083d2018-04-13 06:39:07 -0700609listen_session_get (u32 index)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700610{
Florin Coras5c9083d2018-04-13 06:39:07 -0700611 return session_get (index, 0);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700612}
613
614always_inline void
615listen_session_del (stream_session_t * s)
616{
Florin Coras5c9083d2018-04-13 06:39:07 -0700617 session_free (s);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700618}
619
Florin Coras3cbc04b2017-10-02 00:18:51 -0700620transport_connection_t *listen_session_get_transport (stream_session_t * s);
621
Florin Corascea194d2017-10-02 00:18:51 -0700622int
623listen_session_get_local_session_endpoint (stream_session_t * listener,
624 session_endpoint_t * sep);
625
Florin Corasfd542f12018-05-16 19:28:24 -0700626void session_flush_frames_main_thread (vlib_main_t * vm);
627
Florin Coras6cf30ad2017-04-04 23:08:23 -0700628always_inline u8
629session_manager_is_enabled ()
630{
631 return session_manager_main.is_enabled == 1;
632}
633
Florin Corascea194d2017-10-02 00:18:51 -0700634#define session_cli_return_if_not_enabled() \
635do { \
636 if (!session_manager_main.is_enabled) \
637 return clib_error_return(0, "session layer is not enabled"); \
638} while (0)
639
Dave Barach2a863912017-11-28 10:11:42 -0500640void session_node_enable_disable (u8 is_en);
641
Dave Barach68b0fb02017-02-28 15:15:56 -0500642#endif /* __included_session_h__ */
643
644/*
645 * fd.io coding-style-patch-verification: ON
646 *
647 * Local Variables:
648 * eval: (c-set-style "gnu")
649 * End:
650 */