blob: 10bae273d8534801cc4898a3988c8680d60b9dd9 [file] [log] [blame]
Dave Barach68b0fb02017-02-28 15:15:56 -05001/*
Florin Coras288eaab2019-02-03 15:26:14 -08002 * Copyright (c) 2017-2019 Cisco and/or its affiliates.
Dave Barach68b0fb02017-02-28 15:15:56 -05003 * 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 Coras2062ec02019-07-15 13:15:18 -070018#include <vppinfra/llist.h>
Florin Coras288eaab2019-02-03 15:26:14 -080019#include <vnet/session/session_types.h>
Florin Coras04e53442017-07-16 17:12:15 -070020#include <vnet/session/session_lookup.h>
Florin Coras3e350af2017-03-30 02:54:28 -070021#include <vnet/session/session_debug.h>
Florin Coras288eaab2019-02-03 15:26:14 -080022#include <svm/message_queue.h>
Florin Coras04943b42020-12-25 11:45:40 -080023#include <svm/fifo_segment.h>
Marvin Liu06542422022-08-16 06:49:09 +000024#include <vlib/dma/dma.h>
Dave Barach68b0fb02017-02-28 15:15:56 -050025
Florin Coras3e350af2017-03-30 02:54:28 -070026#define foreach_session_input_error \
Dave Barach68b0fb02017-02-28 15:15:56 -050027_(NO_SESSION, "No session drops") \
28_(NO_LISTENER, "No listener for dst port drops") \
29_(ENQUEUED, "Packets pushed into rx fifo") \
30_(NOT_READY, "Session not ready packets") \
31_(FIFO_FULL, "Packets dropped for lack of rx fifo space") \
32_(EVENT_FIFO_FULL, "Events not sent for lack of event fifo space") \
33_(API_QUEUE_FULL, "Sessions not created for lack of API queue space") \
Dave Barach68b0fb02017-02-28 15:15:56 -050034
35typedef enum
36{
37#define _(sym,str) SESSION_ERROR_##sym,
38 foreach_session_input_error
39#undef _
40 SESSION_N_ERROR,
Florin Coras00e01d32019-10-21 16:07:46 -070041} session_input_error_t;
Dave Barach68b0fb02017-02-28 15:15:56 -050042
Filip Tehlarac3c8dc2023-03-14 08:50:28 +010043typedef struct session_wrk_stats_
44{
45 u32 errors[SESSION_N_ERRORS];
46} session_wrk_stats_t;
47
Florin Coras8e43d042018-05-04 15:46:57 -070048typedef struct session_tx_context_
49{
50 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
Florin Coras288eaab2019-02-03 15:26:14 -080051 session_t *s;
Florin Coras8e43d042018-05-04 15:46:57 -070052 transport_proto_vft_t *transport_vft;
53 transport_connection_t *tc;
Florin Coras70f879d2020-03-13 17:54:42 +000054 transport_send_params_t sp;
Florin Coras8e43d042018-05-04 15:46:57 -070055 u32 max_dequeue;
Florin Coras8e43d042018-05-04 15:46:57 -070056 u32 left_to_snd;
Florin Coras8e43d042018-05-04 15:46:57 -070057 u32 max_len_to_snd;
58 u16 deq_per_first_buf;
59 u16 deq_per_buf;
Florin Corasf08f26d2018-05-10 13:20:47 -070060 u16 n_segs_per_evt;
Simon Zhangae16a982020-03-31 20:56:22 +080061 u16 n_bufs_needed;
Florin Coras8e43d042018-05-04 15:46:57 -070062 u8 n_bufs_per_seg;
63 CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
64 session_dgram_hdr_t hdr;
Florin Coras1d7a6632021-05-17 23:44:53 -070065
66 /** Vector of tx buffer free lists */
67 u32 *tx_buffers;
Florin Corasf66cc802021-04-08 19:10:07 -070068 vlib_buffer_t **transport_pending_bufs;
Florin Coras8e43d042018-05-04 15:46:57 -070069} session_tx_context_t;
70
Florin Coras2062ec02019-07-15 13:15:18 -070071typedef struct session_evt_elt
72{
73 clib_llist_anchor_t evt_list;
74 session_event_t evt;
75} session_evt_elt_t;
76
Florin Coras458089b2019-08-21 16:20:44 -070077typedef struct session_ctrl_evt_data_
78{
79 u8 data[SESSION_CTRL_MSG_MAX_SIZE];
80} session_evt_ctrl_data_t;
81
Florin Coras7da88292021-03-18 15:04:34 -070082typedef enum session_wrk_state_
83{
84 SESSION_WRK_POLLING,
85 SESSION_WRK_INTERRUPT,
86 SESSION_WRK_IDLE,
87} __clib_packed session_wrk_state_t;
88
89typedef enum session_wrk_flags_
90{
91 SESSION_WRK_F_ADAPTIVE = 1 << 0,
92} __clib_packed session_wrk_flag_t;
93
Marvin Liu06542422022-08-16 06:49:09 +000094#define DMA_TRANS_SIZE 1024
95typedef struct
96{
97 u32 *pending_tx_buffers;
98 u16 *pending_tx_nexts;
99} session_dma_transfer;
100
Florin Coras31c99552019-03-01 13:00:58 -0800101typedef struct session_worker_
Dave Barach68b0fb02017-02-28 15:15:56 -0500102{
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700103 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
Dave Barach68b0fb02017-02-28 15:15:56 -0500104
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700105 /** Worker session pool */
Florin Coras288eaab2019-02-03 15:26:14 -0800106 session_t *sessions;
Florin Coras3cbc04b2017-10-02 00:18:51 -0700107
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700108 /** vpp event message queue for worker */
109 svm_msg_q_t *vpp_event_queue;
Florin Coras8e43d042018-05-04 15:46:57 -0700110
Florin Corasd67f1122018-05-21 17:47:40 -0700111 /** vlib_time_now last time around the track */
Florin Corasa8e71c82019-10-22 19:01:39 -0700112 clib_time_type_t last_vlib_time;
113
114 /** vlib_time_now rounded to us precision and as u64 */
115 clib_us_time_t last_vlib_us_time;
Florin Corasd67f1122018-05-21 17:47:40 -0700116
Florin Coras60183db2019-07-20 15:53:16 -0700117 /** Convenience pointer to this worker's vlib_main */
118 vlib_main_t *vm;
119
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700120 /** Per-proto vector of sessions to enqueue */
Florin Coras07063b82020-03-13 04:44:51 +0000121 u32 **session_to_enqueue;
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700122
Florin Coras7da88292021-03-18 15:04:34 -0700123 /** Timerfd used to periodically signal wrk session queue node */
Florin Coras1c19aef2021-04-06 15:54:14 -0700124 int timerfd;
Florin Coras7da88292021-03-18 15:04:34 -0700125
126 /** Worker flags */
127 session_wrk_flag_t flags;
128
129 /** Worker state */
130 session_wrk_state_t state;
131
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700132 /** Context for session tx */
133 session_tx_context_t ctx;
134
Florin Coras2062ec02019-07-15 13:15:18 -0700135 /** Pool of session event list elements */
136 session_evt_elt_t *event_elts;
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700137
Florin Coras458089b2019-08-21 16:20:44 -0700138 /** Pool of ctrl events data buffers */
139 session_evt_ctrl_data_t *ctrl_evts_data;
140
Florin Corasb0ffbee2019-07-21 19:23:46 -0700141 /** Head of control events list */
142 clib_llist_index_t ctrl_head;
143
Florin Coras2062ec02019-07-15 13:15:18 -0700144 /** Head of list of elements */
145 clib_llist_index_t new_head;
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700146
Florin Coras2062ec02019-07-15 13:15:18 -0700147 /** Head of list of pending events */
Florin Coras60183db2019-07-20 15:53:16 -0700148 clib_llist_index_t old_head;
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700149
Florin Coras2a7ea2e2019-10-16 22:06:08 -0700150 /** Vector of buffers to be sent */
151 u32 *pending_tx_buffers;
152
153 /** Vector of nexts for the pending tx buffers */
154 u16 *pending_tx_nexts;
155
Florin Coras7da88292021-03-18 15:04:34 -0700156 /** Clib file for timerfd. Used only if adaptive mode is on */
157 uword timerfd_file;
158
Florin Corasaf972212021-05-05 09:54:00 -0700159 /** List of pending connects for first worker */
160 clib_llist_index_t pending_connects;
161
162 /** Flag that is set if main thread signaled to handle connects */
Florin Coras0f273392021-05-21 15:48:18 -0700163 u32 n_pending_connects;
Florin Corasaf972212021-05-05 09:54:00 -0700164
Florin Corase09bd482022-03-21 10:38:01 -0700165 /** List head for first worker evts pending handling on main */
166 clib_llist_index_t evts_pending_main;
167
Marvin Liu06542422022-08-16 06:49:09 +0000168 int config_index;
169 u8 dma_enabled;
170 session_dma_transfer *dma_trans;
171 u16 trans_head;
172 u16 trans_tail;
173 u16 trans_size;
174 u16 batch_num;
175 vlib_dma_batch_t *batch;
176
Filip Tehlarac3c8dc2023-03-14 08:50:28 +0100177 session_wrk_stats_t stats;
178
Florin Corascca96182019-07-19 07:34:13 -0700179#if SESSION_DEBUG
180 /** last event poll time by thread */
Florin Corasa8e71c82019-10-22 19:01:39 -0700181 clib_time_type_t last_event_poll;
Florin Corascca96182019-07-19 07:34:13 -0700182#endif
Florin Coras31c99552019-03-01 13:00:58 -0800183} session_worker_t;
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700184
Florin Coras60183db2019-07-20 15:53:16 -0700185typedef int (session_fifo_rx_fn) (session_worker_t * wrk,
Florin Coras1bcad5c2019-01-09 20:04:38 -0800186 vlib_node_runtime_t * node,
Florin Coras60183db2019-07-20 15:53:16 -0700187 session_evt_elt_t * e, int *n_tx_packets);
Florin Coras1bcad5c2019-01-09 20:04:38 -0800188
189extern session_fifo_rx_fn session_tx_fifo_peek_and_snd;
190extern session_fifo_rx_fn session_tx_fifo_dequeue_and_snd;
191extern session_fifo_rx_fn session_tx_fifo_dequeue_internal;
192
193u8 session_node_lookup_fifo_event (svm_fifo_t * f, session_event_t * e);
194
Florin Coras5384cca2022-01-20 18:10:26 -0800195typedef void (*session_update_time_fn) (f64 time_now, u8 thread_index);
196
Florin Coras31c99552019-03-01 13:00:58 -0800197typedef struct session_main_
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700198{
199 /** Worker contexts */
Florin Coras31c99552019-03-01 13:00:58 -0800200 session_worker_t *wrk;
Dave Barach68b0fb02017-02-28 15:15:56 -0500201
Florin Coras5384cca2022-01-20 18:10:26 -0800202 /** Vector of transport update time functions */
203 session_update_time_fn *update_time_fns;
204
Florin Coras6c10ab22020-11-08 16:50:39 -0800205 /** Event queues memfd segment */
Florin Coras8afe1b82021-11-17 23:38:54 -0800206 fifo_segment_t wrk_mqs_segment;
Florin Corasb384b542018-01-15 01:08:33 -0800207
Florin Coras93e65802017-11-29 00:07:11 -0500208 /** Unique segment name counter */
209 u32 unique_segment_name_counter;
210
211 /** Per transport rx function that can either dequeue or peek */
Florin Coras561af9b2017-12-09 10:19:43 -0800212 session_fifo_rx_fn **session_tx_fns;
213
214 /** Per session type output nodes. Could optimize to group nodes by
215 * fib but lookup would then require session type parsing in session node.
216 * Trade memory for speed, for now */
217 u32 *session_type_to_next;
Florin Coras93e65802017-11-29 00:07:11 -0500218
Florin Coras309f7aa2022-03-18 08:33:08 -0700219 /** Thread used for allocating active open connections, i.e., half-opens
220 * for transports like tcp, and sessions that will be migrated for cl
221 * transports like udp. If vpp has workers, this will be first worker. */
Florin Corasfb50bc32021-05-18 00:28:59 -0700222 u32 transport_cl_thread;
223
Florin Coras07063b82020-03-13 04:44:51 +0000224 transport_proto_t last_transport_proto_type;
225
Florin Coras53d8d4f2022-03-09 13:55:38 -0800226 /** Number of workers at pool realloc barrier */
Florin Coras5b47a6d2022-03-26 01:25:02 -0700227 volatile u32 pool_realloc_at_barrier;
228
229 /** Number of workers doing reallocs */
230 volatile u32 pool_realloc_doing_work;
Florin Coras53d8d4f2022-03-09 13:55:38 -0800231
232 /** Lock to synchronize parallel forced reallocs */
233 clib_spinlock_t pool_realloc_lock;
234
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700235 /*
236 * Config parameters
237 */
238
Florin Coras93e65802017-11-29 00:07:11 -0500239 /** Session manager is enabled */
240 u8 is_enabled;
Florin Corase10da622020-10-25 14:00:29 -0700241
242 /** Session manager initialized (not necessarily enabled) */
243 u8 is_initialized;
244
Nathan Skrzypczak31bd0352019-11-07 17:55:01 +0100245 /** Enable session manager at startup */
246 u8 session_enable_asap;
Florin Coras93e65802017-11-29 00:07:11 -0500247
Florin Corase92c9462020-11-25 08:44:16 -0800248 /** Poll session node in main thread */
249 u8 poll_main;
250
Florin Coras41d5f542021-01-15 13:49:33 -0800251 /** Allocate private rx mqs for external apps */
252 u8 use_private_rx_mqs;
253
Florin Coras7da88292021-03-18 15:04:34 -0700254 /** Do not enable session queue node adaptive mode */
255 u8 no_adaptive;
256
Dave Barach10d8cc62017-05-30 09:30:07 -0400257 /** vpp fifo event queue configured length */
Florin Coras8afe1b82021-11-17 23:38:54 -0800258 u32 configured_wrk_mq_length;
Dave Barach10d8cc62017-05-30 09:30:07 -0400259
Florin Corasb384b542018-01-15 01:08:33 -0800260 /** Session ssvm segment configs*/
Florin Coras8afe1b82021-11-17 23:38:54 -0800261 uword wrk_mqs_segment_size;
Florin Corasb384b542018-01-15 01:08:33 -0800262
Marvin Liu06542422022-08-16 06:49:09 +0000263 /** Session enable dma*/
264 u8 dma_enabled;
265
Florin Corasb384b542018-01-15 01:08:33 -0800266 /** Session table size parameters */
Florin Coras66b11312017-07-31 17:18:03 -0700267 u32 configured_v4_session_table_buckets;
268 u32 configured_v4_session_table_memory;
269 u32 configured_v4_halfopen_table_buckets;
270 u32 configured_v4_halfopen_table_memory;
271 u32 configured_v6_session_table_buckets;
272 u32 configured_v6_session_table_memory;
273 u32 configured_v6_halfopen_table_buckets;
274 u32 configured_v6_halfopen_table_memory;
275
Florin Coras93e65802017-11-29 00:07:11 -0500276 /** Transport table (preallocation) size parameters */
277 u32 local_endpoints_table_memory;
278 u32 local_endpoints_table_buckets;
Florin Corase04c2992017-03-01 08:17:34 -0800279
Dave Barach2c25a622017-06-26 11:35:07 -0400280 /** Preallocate session config parameter */
281 u32 preallocated_sessions;
282
Filip Tehlar0046e972021-06-26 22:12:08 +0000283 u16 msg_id_base;
Florin Coras31c99552019-03-01 13:00:58 -0800284} session_main_t;
Dave Barach68b0fb02017-02-28 15:15:56 -0500285
Florin Coras31c99552019-03-01 13:00:58 -0800286extern session_main_t session_main;
Florin Corase04c2992017-03-01 08:17:34 -0800287extern vlib_node_registration_t session_queue_node;
Florin Corasfd542f12018-05-16 19:28:24 -0700288extern vlib_node_registration_t session_queue_process_node;
Florin Coras653e43f2019-03-04 10:56:23 -0800289extern vlib_node_registration_t session_queue_pre_input_node;
Florin Corasfd542f12018-05-16 19:28:24 -0700290
Florin Coras5484daa2020-03-27 23:55:06 +0000291typedef enum session_q_process_evt_
292{
293 SESSION_Q_PROCESS_RUN_ON_MAIN = 1,
294 SESSION_Q_PROCESS_STOP
295} session_q_process_evt_t;
Dave Barach68b0fb02017-02-28 15:15:56 -0500296
Florin Coras07063b82020-03-13 04:44:51 +0000297#define TRANSPORT_PROTO_INVALID (session_main.last_transport_proto_type + 1)
298#define TRANSPORT_N_PROTOS (session_main.last_transport_proto_type + 1)
299
Florin Coras2062ec02019-07-15 13:15:18 -0700300static inline void
Florin Coras60183db2019-07-20 15:53:16 -0700301session_evt_add_old (session_worker_t * wrk, session_evt_elt_t * elt)
Florin Coras2062ec02019-07-15 13:15:18 -0700302{
303 clib_llist_add_tail (wrk->event_elts, evt_list, elt,
Florin Coras46b8b1a2021-05-17 19:09:33 -0700304 clib_llist_elt (wrk->event_elts, wrk->old_head));
Florin Coras2062ec02019-07-15 13:15:18 -0700305}
306
Florin Corasdd97a482019-11-02 14:32:52 -0700307static inline void
308session_evt_add_head_old (session_worker_t * wrk, session_evt_elt_t * elt)
309{
310 clib_llist_add (wrk->event_elts, evt_list, elt,
Florin Coras46b8b1a2021-05-17 19:09:33 -0700311 clib_llist_elt (wrk->event_elts, wrk->old_head));
Florin Corasdd97a482019-11-02 14:32:52 -0700312}
313
314
Florin Coras458089b2019-08-21 16:20:44 -0700315static inline u32
316session_evt_ctrl_data_alloc (session_worker_t * wrk)
317{
318 session_evt_ctrl_data_t *data;
319 pool_get (wrk->ctrl_evts_data, data);
320 return (data - wrk->ctrl_evts_data);
321}
322
Florin Corasb0ffbee2019-07-21 19:23:46 -0700323static inline session_evt_elt_t *
324session_evt_alloc_ctrl (session_worker_t * wrk)
Florin Coras2062ec02019-07-15 13:15:18 -0700325{
Florin Corasb0ffbee2019-07-21 19:23:46 -0700326 session_evt_elt_t *elt;
Florin Coras46b8b1a2021-05-17 19:09:33 -0700327 clib_llist_get (wrk->event_elts, elt);
Florin Coras2062ec02019-07-15 13:15:18 -0700328 clib_llist_add_tail (wrk->event_elts, evt_list, elt,
Florin Coras46b8b1a2021-05-17 19:09:33 -0700329 clib_llist_elt (wrk->event_elts, wrk->ctrl_head));
Florin Corasb0ffbee2019-07-21 19:23:46 -0700330 return elt;
Florin Coras2062ec02019-07-15 13:15:18 -0700331}
332
Florin Coras458089b2019-08-21 16:20:44 -0700333static inline void *
334session_evt_ctrl_data (session_worker_t * wrk, session_evt_elt_t * elt)
335{
336 return (void *) (pool_elt_at_index (wrk->ctrl_evts_data,
337 elt->evt.ctrl_data_index));
338}
339
340static inline void
341session_evt_ctrl_data_free (session_worker_t * wrk, session_evt_elt_t * elt)
342{
Florin Corasaeb7c1c2023-03-10 10:22:21 -0800343 ASSERT (elt->evt.event_type >= SESSION_CTRL_EVT_RPC);
Florin Coras458089b2019-08-21 16:20:44 -0700344 pool_put_index (wrk->ctrl_evts_data, elt->evt.ctrl_data_index);
345}
346
Florin Coras26dd6de2019-07-23 23:54:47 -0700347static inline session_evt_elt_t *
348session_evt_alloc_new (session_worker_t * wrk)
349{
350 session_evt_elt_t *elt;
Florin Coras46b8b1a2021-05-17 19:09:33 -0700351 clib_llist_get (wrk->event_elts, elt);
Florin Coras26dd6de2019-07-23 23:54:47 -0700352 clib_llist_add_tail (wrk->event_elts, evt_list, elt,
Florin Coras46b8b1a2021-05-17 19:09:33 -0700353 clib_llist_elt (wrk->event_elts, wrk->new_head));
Florin Coras26dd6de2019-07-23 23:54:47 -0700354 return elt;
355}
356
357static inline session_evt_elt_t *
358session_evt_alloc_old (session_worker_t * wrk)
359{
360 session_evt_elt_t *elt;
Florin Coras46b8b1a2021-05-17 19:09:33 -0700361 clib_llist_get (wrk->event_elts, elt);
Florin Coras26dd6de2019-07-23 23:54:47 -0700362 clib_llist_add_tail (wrk->event_elts, evt_list, elt,
Florin Coras46b8b1a2021-05-17 19:09:33 -0700363 clib_llist_elt (wrk->event_elts, wrk->old_head));
Florin Coras26dd6de2019-07-23 23:54:47 -0700364 return elt;
365}
366
Florin Coras41d5f542021-01-15 13:49:33 -0800367int session_wrk_handle_mq (session_worker_t *wrk, svm_msg_q_t *mq);
368
Florin Coras288eaab2019-02-03 15:26:14 -0800369session_t *session_alloc (u32 thread_index);
Florin Coras288eaab2019-02-03 15:26:14 -0800370void session_free (session_t * s);
371void session_free_w_fifos (session_t * s);
Florin Corasea727642021-05-07 19:39:43 -0700372void session_cleanup_half_open (session_handle_t ho_handle);
Srikanth Akulae140d5d2019-11-18 11:49:58 -0800373u8 session_is_valid (u32 si, u8 thread_index);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700374
Florin Coras288eaab2019-02-03 15:26:14 -0800375always_inline session_t *
Florin Corascea194d2017-10-02 00:18:51 -0700376session_get (u32 si, u32 thread_index)
Dave Barach68b0fb02017-02-28 15:15:56 -0500377{
Florin Coras31c99552019-03-01 13:00:58 -0800378 ASSERT (session_is_valid (si, thread_index));
379 return pool_elt_at_index (session_main.wrk[thread_index].sessions, si);
Dave Barach68b0fb02017-02-28 15:15:56 -0500380}
381
Florin Coras288eaab2019-02-03 15:26:14 -0800382always_inline session_t *
Florin Coras3cbc04b2017-10-02 00:18:51 -0700383session_get_if_valid (u64 si, u32 thread_index)
Dave Barach68b0fb02017-02-28 15:15:56 -0500384{
Florin Coras31c99552019-03-01 13:00:58 -0800385 if (thread_index >= vec_len (session_main.wrk))
Dave Barach68b0fb02017-02-28 15:15:56 -0500386 return 0;
387
Florin Coras31c99552019-03-01 13:00:58 -0800388 if (pool_is_free_index (session_main.wrk[thread_index].sessions, si))
Dave Barach68b0fb02017-02-28 15:15:56 -0500389 return 0;
390
Florin Coras31c99552019-03-01 13:00:58 -0800391 ASSERT (session_is_valid (si, thread_index));
392 return pool_elt_at_index (session_main.wrk[thread_index].sessions, si);
Dave Barach68b0fb02017-02-28 15:15:56 -0500393}
394
Florin Coras288eaab2019-02-03 15:26:14 -0800395always_inline session_t *
Florin Corasf8f516a2018-02-08 15:10:09 -0800396session_get_from_handle (session_handle_t handle)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700397{
Florin Coras31c99552019-03-01 13:00:58 -0800398 session_main_t *smm = &session_main;
Florin Corasf8f516a2018-02-08 15:10:09 -0800399 u32 session_index, thread_index;
400 session_parse_handle (handle, &session_index, &thread_index);
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700401 return pool_elt_at_index (smm->wrk[thread_index].sessions, session_index);
Florin Corasf8f516a2018-02-08 15:10:09 -0800402}
403
Florin Coras288eaab2019-02-03 15:26:14 -0800404always_inline session_t *
Florin Corasf8f516a2018-02-08 15:10:09 -0800405session_get_from_handle_if_valid (session_handle_t handle)
406{
407 u32 session_index, thread_index;
408 session_parse_handle (handle, &session_index, &thread_index);
409 return session_get_if_valid (session_index, thread_index);
410}
411
Florin Coras31c99552019-03-01 13:00:58 -0800412u64 session_segment_handle (session_t * s);
Florin Corasfa76a762018-11-29 12:40:10 -0800413
Florin Coras3cbc04b2017-10-02 00:18:51 -0700414/**
Florin Coras6bd8d3f2022-03-14 21:17:25 -0700415 * Get session from handle and avoid pool validation if no same thread
Florin Coras3cbc04b2017-10-02 00:18:51 -0700416 *
Florin Coras6bd8d3f2022-03-14 21:17:25 -0700417 * Peekers are fine because pool grows with barrier (see @ref session_alloc)
Florin Coras3cbc04b2017-10-02 00:18:51 -0700418 */
Florin Coras288eaab2019-02-03 15:26:14 -0800419always_inline session_t *
Florin Coras3cbc04b2017-10-02 00:18:51 -0700420session_get_from_handle_safe (u64 handle)
421{
Florin Coras3cbc04b2017-10-02 00:18:51 -0700422 u32 thread_index = session_thread_from_handle (handle);
Florin Coras31c99552019-03-01 13:00:58 -0800423 session_worker_t *wrk = &session_main.wrk[thread_index];
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700424
Florin Coras3cbc04b2017-10-02 00:18:51 -0700425 if (thread_index == vlib_get_thread_index ())
426 {
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700427 return pool_elt_at_index (wrk->sessions,
Florin Coras3cbc04b2017-10-02 00:18:51 -0700428 session_index_from_handle (handle));
429 }
430 else
431 {
Florin Coras6bd8d3f2022-03-14 21:17:25 -0700432 /* Don't use pool_elt_at index to avoid pool bitmap reallocs */
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700433 return wrk->sessions + session_index_from_handle (handle);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700434 }
435}
436
Florin Coras1ee78302019-02-05 15:51:15 -0800437always_inline session_t *
438session_clone_safe (u32 session_index, u32 thread_index)
439{
Florin Coras6bd8d3f2022-03-14 21:17:25 -0700440 u32 current_thread_index = vlib_get_thread_index (), new_index;
Florin Coras1ee78302019-02-05 15:51:15 -0800441 session_t *old_s, *new_s;
Florin Coras1ee78302019-02-05 15:51:15 -0800442
Florin Coras1ee78302019-02-05 15:51:15 -0800443 new_s = session_alloc (current_thread_index);
Florin Coras6bd8d3f2022-03-14 21:17:25 -0700444 new_index = new_s->session_index;
445 /* Session pools are reallocated with barrier (see @ref session_alloc) */
Florin Coras31c99552019-03-01 13:00:58 -0800446 old_s = session_main.wrk[thread_index].sessions + session_index;
Florin Coras1ee78302019-02-05 15:51:15 -0800447 clib_memcpy_fast (new_s, old_s, sizeof (*new_s));
Florin Coras1ee78302019-02-05 15:51:15 -0800448 new_s->thread_index = current_thread_index;
Florin Coras6bd8d3f2022-03-14 21:17:25 -0700449 new_s->session_index = new_index;
Florin Coras1ee78302019-02-05 15:51:15 -0800450 return new_s;
451}
452
Florin Coras89a9f612021-05-11 11:55:07 -0700453int session_open (session_endpoint_cfg_t *sep, session_handle_t *rsh);
Florin Coras1ee78302019-02-05 15:51:15 -0800454int session_listen (session_t * s, session_endpoint_cfg_t * sep);
455int session_stop_listen (session_t * s);
liuyacan534468e2021-05-09 03:50:40 +0000456void session_half_close (session_t *s);
Florin Coras1ee78302019-02-05 15:51:15 -0800457void session_close (session_t * s);
Florin Corasdfb3b872019-08-16 17:48:44 -0700458void session_reset (session_t * s);
liuyacan534468e2021-05-09 03:50:40 +0000459void session_transport_half_close (session_t *s);
Florin Coras1ee78302019-02-05 15:51:15 -0800460void session_transport_close (session_t * s);
Florin Corasdfb3b872019-08-16 17:48:44 -0700461void session_transport_reset (session_t * s);
Florin Coras1ee78302019-02-05 15:51:15 -0800462void session_transport_cleanup (session_t * s);
463int session_send_io_evt_to_thread (svm_fifo_t * f,
464 session_evt_type_t evt_type);
Florin Coras653e43f2019-03-04 10:56:23 -0800465int session_enqueue_notify (session_t * s);
Florin Coras1ee78302019-02-05 15:51:15 -0800466int session_dequeue_notify (session_t * s);
467int session_send_io_evt_to_thread_custom (void *data, u32 thread_index,
468 session_evt_type_t evt_type);
469void session_send_rpc_evt_to_thread (u32 thread_index, void *fp,
470 void *rpc_args);
Nathan Skrzypczak60f3e652019-03-19 13:57:31 +0100471void session_send_rpc_evt_to_thread_force (u32 thread_index, void *fp,
472 void *rpc_args);
Florin Coras26dd6de2019-07-23 23:54:47 -0700473void session_add_self_custom_tx_evt (transport_connection_t * tc,
474 u8 has_prio);
Florin Coras70f879d2020-03-13 17:54:42 +0000475void sesssion_reschedule_tx (transport_connection_t * tc);
Florin Coras1ee78302019-02-05 15:51:15 -0800476transport_connection_t *session_get_transport (session_t * s);
Florin Coras09d18c22019-04-24 11:10:02 -0700477void session_get_endpoint (session_t * s, transport_endpoint_t * tep,
478 u8 is_lcl);
Florin Coras04ae8272021-04-12 19:55:37 -0700479int session_transport_attribute (session_t *s, u8 is_get,
480 transport_endpt_attr_t *attr);
Florin Coras1ee78302019-02-05 15:51:15 -0800481
Florin Coras31c99552019-03-01 13:00:58 -0800482u8 *format_session (u8 * s, va_list * args);
483uword unformat_session (unformat_input_t * input, va_list * args);
Florin Coras1ee78302019-02-05 15:51:15 -0800484uword unformat_transport_connection (unformat_input_t * input,
485 va_list * args);
486
487/*
488 * Interface to transport protos
489 */
490
491int session_enqueue_stream_connection (transport_connection_t * tc,
492 vlib_buffer_t * b, u32 offset,
493 u8 queue_event, u8 is_in_order);
494int session_enqueue_dgram_connection (session_t * s,
495 session_dgram_hdr_t * hdr,
496 vlib_buffer_t * b, u8 proto,
497 u8 queue_event);
Florin Coras00e01d32019-10-21 16:07:46 -0700498int session_stream_connect_notify (transport_connection_t * tc,
499 session_error_t err);
Florin Coras1ee78302019-02-05 15:51:15 -0800500int session_dgram_connect_notify (transport_connection_t * tc,
501 u32 old_thread_index,
502 session_t ** new_session);
Florin Corasa27a46e2019-02-18 13:02:28 -0800503int session_stream_accept_notify (transport_connection_t * tc);
Florin Coras1ee78302019-02-05 15:51:15 -0800504void session_transport_closing_notify (transport_connection_t * tc);
505void session_transport_delete_notify (transport_connection_t * tc);
Florin Corasea727642021-05-07 19:39:43 -0700506void session_half_open_delete_notify (transport_connection_t *tc);
Florin Corasbab6c522021-05-13 08:36:56 -0700507void session_half_open_migrate_notify (transport_connection_t *tc);
508int session_half_open_migrated_notify (transport_connection_t *tc);
Florin Coras1ee78302019-02-05 15:51:15 -0800509void session_transport_closed_notify (transport_connection_t * tc);
510void session_transport_reset_notify (transport_connection_t * tc);
Florin Corasc9940fc2019-02-05 20:55:11 -0800511int session_stream_accept (transport_connection_t * tc, u32 listener_index,
Nathan Skrzypczak2f0f96b2019-06-13 10:14:28 +0200512 u32 thread_index, u8 notify);
Florin Corase759bb52020-04-08 01:55:39 +0000513int session_dgram_accept (transport_connection_t * tc, u32 listener_index,
514 u32 thread_index);
Florin Coras07063b82020-03-13 04:44:51 +0000515/**
516 * Initialize session layer for given transport proto and ip version
517 *
518 * Allocates per session type (transport proto + ip version) data structures
519 * and adds arc from session queue node to session type output node.
520 *
521 * @param transport_proto transport proto to be registered
522 * @param vft virtual function table for transport
523 * @param is_ip4 flag that indicates if transports uses ipv4
524 * as underlying network layer
525 * @param output_node output node for transport
526 */
Florin Coras1ee78302019-02-05 15:51:15 -0800527void session_register_transport (transport_proto_t transport_proto,
528 const transport_proto_vft_t * vft, u8 is_ip4,
529 u32 output_node);
Florin Coras07063b82020-03-13 04:44:51 +0000530transport_proto_t session_add_transport_proto (void);
Florin Coras5384cca2022-01-20 18:10:26 -0800531void session_register_update_time_fn (session_update_time_fn fn, u8 is_add);
Florin Coras31c99552019-03-01 13:00:58 -0800532int session_tx_fifo_peek_bytes (transport_connection_t * tc, u8 * buffer,
533 u32 offset, u32 max_bytes);
534u32 session_tx_fifo_dequeue_drop (transport_connection_t * tc, u32 max_bytes);
Florin Coras1ee78302019-02-05 15:51:15 -0800535
Steven Luongd810a6e2022-10-25 13:09:11 -0700536always_inline void
537session_set_state (session_t *s, session_state_t session_state)
538{
539 s->session_state = session_state;
540 SESSION_EVT (SESSION_EVT_STATE_CHANGE, s);
541}
542
Florin Coras1ee78302019-02-05 15:51:15 -0800543always_inline u32
Florin Corasd2aab832018-05-22 11:39:59 -0700544transport_max_rx_enqueue (transport_connection_t * tc)
Dave Barach68b0fb02017-02-28 15:15:56 -0500545{
Florin Coras288eaab2019-02-03 15:26:14 -0800546 session_t *s = session_get (tc->s_index, tc->thread_index);
Sirshak Das28aa5392019-02-05 01:33:33 -0600547 return svm_fifo_max_enqueue_prod (s->rx_fifo);
Dave Barach68b0fb02017-02-28 15:15:56 -0500548}
549
Florin Corase04c2992017-03-01 08:17:34 -0800550always_inline u32
Florin Coras42ceddb2018-12-12 10:56:01 -0800551transport_max_tx_dequeue (transport_connection_t * tc)
552{
Florin Coras288eaab2019-02-03 15:26:14 -0800553 session_t *s = session_get (tc->s_index, tc->thread_index);
Sirshak Das28aa5392019-02-05 01:33:33 -0600554 return svm_fifo_max_dequeue_cons (s->tx_fifo);
Florin Coras42ceddb2018-12-12 10:56:01 -0800555}
556
557always_inline u32
Florin Corasf65074e2019-03-31 17:17:11 -0700558transport_max_rx_dequeue (transport_connection_t * tc)
559{
560 session_t *s = session_get (tc->s_index, tc->thread_index);
561 return svm_fifo_max_dequeue (s->rx_fifo);
562}
563
564always_inline u32
Florin Corasd2aab832018-05-22 11:39:59 -0700565transport_rx_fifo_size (transport_connection_t * tc)
Florin Corase04c2992017-03-01 08:17:34 -0800566{
Florin Coras288eaab2019-02-03 15:26:14 -0800567 session_t *s = session_get (tc->s_index, tc->thread_index);
Florin Corasf22f4e52019-12-19 16:10:58 -0800568 return svm_fifo_size (s->rx_fifo);
Florin Corase04c2992017-03-01 08:17:34 -0800569}
570
Florin Coras3cbc04b2017-10-02 00:18:51 -0700571always_inline u32
Florin Corasd2aab832018-05-22 11:39:59 -0700572transport_tx_fifo_size (transport_connection_t * tc)
573{
Florin Coras288eaab2019-02-03 15:26:14 -0800574 session_t *s = session_get (tc->s_index, tc->thread_index);
Florin Corasf22f4e52019-12-19 16:10:58 -0800575 return svm_fifo_size (s->tx_fifo);
Florin Corasd2aab832018-05-22 11:39:59 -0700576}
577
Florin Coras7ac053b2018-11-05 15:57:21 -0800578always_inline u8
579transport_rx_fifo_has_ooo_data (transport_connection_t * tc)
580{
Florin Coras288eaab2019-02-03 15:26:14 -0800581 session_t *s = session_get (tc->c_index, tc->thread_index);
582 return svm_fifo_has_ooo_data (s->rx_fifo);
Florin Coras7ac053b2018-11-05 15:57:21 -0800583}
584
Florin Corasc8767c42023-06-27 19:45:59 -0700585always_inline u32
586transport_tx_fifo_has_dgram (transport_connection_t *tc)
587{
588 session_t *s = session_get (tc->s_index, tc->thread_index);
589 u32 max_deq = svm_fifo_max_dequeue_cons (s->tx_fifo);
590 session_dgram_pre_hdr_t phdr;
591
592 if (max_deq <= sizeof (session_dgram_hdr_t))
593 return 0;
594 svm_fifo_peek (s->tx_fifo, 0, sizeof (phdr), (u8 *) &phdr);
595 return max_deq >= phdr.data_length + sizeof (session_dgram_hdr_t);
596}
597
Florin Coras5a41fd52021-04-19 10:17:26 -0700598always_inline void
599transport_rx_fifo_req_deq_ntf (transport_connection_t *tc)
600{
601 session_t *s = session_get (tc->s_index, tc->thread_index);
602 svm_fifo_add_want_deq_ntf (s->rx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
603}
604
Florin Corasa8e71c82019-10-22 19:01:39 -0700605always_inline clib_time_type_t
Florin Corasd67f1122018-05-21 17:47:40 -0700606transport_time_now (u32 thread_index)
607{
Florin Coras31c99552019-03-01 13:00:58 -0800608 return session_main.wrk[thread_index].last_vlib_time;
Florin Corasd67f1122018-05-21 17:47:40 -0700609}
610
Florin Corasa8e71c82019-10-22 19:01:39 -0700611always_inline clib_us_time_t
612transport_us_time_now (u32 thread_index)
613{
614 return session_main.wrk[thread_index].last_vlib_us_time;
615}
616
Florin Corasa39f4722020-11-12 10:20:05 -0800617always_inline clib_time_type_t
618transport_seconds_per_loop (u32 thread_index)
619{
620 return session_main.wrk[thread_index].vm->seconds_per_loop;
621}
622
Florin Coras3ec66b02018-08-23 16:27:05 -0700623always_inline void
624transport_add_tx_event (transport_connection_t * tc)
625{
Florin Coras288eaab2019-02-03 15:26:14 -0800626 session_t *s = session_get (tc->s_index, tc->thread_index);
627 if (svm_fifo_has_event (s->tx_fifo))
Florin Coras3ec66b02018-08-23 16:27:05 -0700628 return;
Florin Corasf6c43132019-03-01 12:41:21 -0800629 session_send_io_evt_to_thread (s->tx_fifo, SESSION_IO_EVT_TX);
Florin Coras3ec66b02018-08-23 16:27:05 -0700630}
631
Florin Corasfb50bc32021-05-18 00:28:59 -0700632always_inline u32
633transport_cl_thread (void)
634{
635 return session_main.transport_cl_thread;
636}
637
Florin Coras309f7aa2022-03-18 08:33:08 -0700638always_inline u32
639session_vlib_thread_is_cl_thread (void)
640{
641 return (vlib_get_thread_index () == transport_cl_thread () ||
642 vlib_thread_is_main_w_barrier ());
643}
644
Florin Coras1ee78302019-02-05 15:51:15 -0800645/*
646 * Listen sessions
647 */
Florin Coras6cf30ad2017-04-04 23:08:23 -0700648
649always_inline u64
Florin Coras288eaab2019-02-03 15:26:14 -0800650listen_session_get_handle (session_t * s)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700651{
Aloys Augustincdb71702019-04-08 17:54:39 +0200652 ASSERT (s->session_state == SESSION_STATE_LISTENING ||
653 session_get_transport_proto (s) == TRANSPORT_PROTO_QUIC);
Florin Coras5c9083d2018-04-13 06:39:07 -0700654 return session_handle (s);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700655}
656
Florin Coras288eaab2019-02-03 15:26:14 -0800657always_inline session_t *
Florin Corasf8f516a2018-02-08 15:10:09 -0800658listen_session_get_from_handle (session_handle_t handle)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700659{
Florin Coras5c9083d2018-04-13 06:39:07 -0700660 return session_get_from_handle (handle);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700661}
662
Florin Coras371ca502018-02-21 12:07:41 -0800663always_inline void
Florin Coras5c9083d2018-04-13 06:39:07 -0700664listen_session_parse_handle (session_handle_t handle, u32 * index,
665 u32 * thread_index)
Florin Coras371ca502018-02-21 12:07:41 -0800666{
Florin Coras5c9083d2018-04-13 06:39:07 -0700667 session_parse_handle (handle, index, thread_index);
Florin Coras371ca502018-02-21 12:07:41 -0800668}
669
Florin Coras288eaab2019-02-03 15:26:14 -0800670always_inline session_t *
Florin Corasba7d8f52019-02-22 13:11:38 -0800671listen_session_alloc (u8 thread_index, session_type_t type)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700672{
Florin Coras288eaab2019-02-03 15:26:14 -0800673 session_t *s;
Florin Coras5c9083d2018-04-13 06:39:07 -0700674 s = session_alloc (thread_index);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700675 s->session_type = type;
676 s->session_state = SESSION_STATE_LISTENING;
Florin Coras6cf30ad2017-04-04 23:08:23 -0700677 return s;
678}
679
Florin Coras288eaab2019-02-03 15:26:14 -0800680always_inline session_t *
Florin Corasba7d8f52019-02-22 13:11:38 -0800681listen_session_get (u32 ls_index)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700682{
Florin Corasba7d8f52019-02-22 13:11:38 -0800683 return session_get (ls_index, 0);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700684}
685
686always_inline void
Florin Corasba7d8f52019-02-22 13:11:38 -0800687listen_session_free (session_t * s)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700688{
Florin Coras87b7e3d2020-03-27 15:06:07 +0000689 ASSERT (!s->rx_fifo);
Florin Coras5c9083d2018-04-13 06:39:07 -0700690 session_free (s);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700691}
692
Florin Corasea727642021-05-07 19:39:43 -0700693always_inline session_t *
694ho_session_alloc (void)
695{
696 session_t *s;
Florin Coras309f7aa2022-03-18 08:33:08 -0700697 ASSERT (session_vlib_thread_is_cl_thread ());
698 s = session_alloc (transport_cl_thread ());
Florin Corasea727642021-05-07 19:39:43 -0700699 s->session_state = SESSION_STATE_CONNECTING;
700 s->flags |= SESSION_F_HALF_OPEN;
701 return s;
702}
703
704always_inline session_t *
705ho_session_get (u32 ho_index)
706{
Florin Coras309f7aa2022-03-18 08:33:08 -0700707 return session_get (ho_index, transport_cl_thread ());
Florin Corasea727642021-05-07 19:39:43 -0700708}
709
710always_inline void
711ho_session_free (session_t *s)
712{
713 ASSERT (!s->rx_fifo && s->thread_index == 0);
714 session_free (s);
715}
716
Florin Coras288eaab2019-02-03 15:26:14 -0800717transport_connection_t *listen_session_get_transport (session_t * s);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700718
Florin Coras1ee78302019-02-05 15:51:15 -0800719/*
Florin Coras31c99552019-03-01 13:00:58 -0800720 * Session layer functions
Florin Coras1ee78302019-02-05 15:51:15 -0800721 */
722
Florin Coras31c99552019-03-01 13:00:58 -0800723always_inline session_main_t *
724vnet_get_session_main ()
Florin Coras1ee78302019-02-05 15:51:15 -0800725{
Florin Coras31c99552019-03-01 13:00:58 -0800726 return &session_main;
Florin Coras1ee78302019-02-05 15:51:15 -0800727}
728
Florin Coras31c99552019-03-01 13:00:58 -0800729always_inline session_worker_t *
730session_main_get_worker (u32 thread_index)
Florin Coras1ee78302019-02-05 15:51:15 -0800731{
Benoît Gannec5b0fcd2022-12-22 15:01:32 +0100732 return vec_elt_at_index (session_main.wrk, thread_index);
Florin Coras1ee78302019-02-05 15:51:15 -0800733}
734
Florin Coras5bb23ec2019-08-31 09:45:13 -0700735static inline session_worker_t *
736session_main_get_worker_if_valid (u32 thread_index)
737{
Nathan Skrzypczak901467e2019-12-04 11:02:28 +0100738 if (thread_index > vec_len (session_main.wrk))
Florin Coras5bb23ec2019-08-31 09:45:13 -0700739 return 0;
Benoît Gannec5b0fcd2022-12-22 15:01:32 +0100740 return session_main_get_worker (thread_index);
Florin Coras5bb23ec2019-08-31 09:45:13 -0700741}
742
Florin Coras1ee78302019-02-05 15:51:15 -0800743always_inline svm_msg_q_t *
Florin Coras31c99552019-03-01 13:00:58 -0800744session_main_get_vpp_event_queue (u32 thread_index)
Florin Coras1ee78302019-02-05 15:51:15 -0800745{
Benoît Gannec5b0fcd2022-12-22 15:01:32 +0100746 return session_main_get_worker (thread_index)->vpp_event_queue;
Florin Coras1ee78302019-02-05 15:51:15 -0800747}
Florin Corasfd542f12018-05-16 19:28:24 -0700748
Florin Coras6cf30ad2017-04-04 23:08:23 -0700749always_inline u8
Florin Coras31c99552019-03-01 13:00:58 -0800750session_main_is_enabled ()
Florin Coras6cf30ad2017-04-04 23:08:23 -0700751{
Florin Coras31c99552019-03-01 13:00:58 -0800752 return session_main.is_enabled == 1;
Florin Coras6cf30ad2017-04-04 23:08:23 -0700753}
754
Filip Tehlarac3c8dc2023-03-14 08:50:28 +0100755always_inline void
756session_worker_stat_error_inc (session_worker_t *wrk, int error, int value)
757{
758 if ((-(error) >= 0 && -(error) < SESSION_N_ERRORS))
759 wrk->stats.errors[-error] += value;
760 else
761 SESSION_DBG ("unknown session counter");
762}
763
764always_inline void
765session_stat_error_inc (int error, int value)
766{
767 session_worker_t *wrk;
768 wrk = session_main_get_worker (vlib_get_thread_index ());
769 session_worker_stat_error_inc (wrk, error, value);
770}
771
Florin Corascea194d2017-10-02 00:18:51 -0700772#define session_cli_return_if_not_enabled() \
773do { \
Florin Coras5bb23ec2019-08-31 09:45:13 -0700774 if (!session_main.is_enabled) \
775 return clib_error_return (0, "session layer is not enabled"); \
Florin Corascea194d2017-10-02 00:18:51 -0700776} while (0)
777
Florin Coras31c99552019-03-01 13:00:58 -0800778int session_main_flush_enqueue_events (u8 proto, u32 thread_index);
779int session_main_flush_all_enqueue_events (u8 transport_proto);
Florin Coras5484daa2020-03-27 23:55:06 +0000780void session_queue_run_on_main_thread (vlib_main_t * vm);
Florin Coras2a7ea2e2019-10-16 22:06:08 -0700781
Florin Coras5484daa2020-03-27 23:55:06 +0000782/**
783 * Add session node pending buffer with custom node
784 *
785 * @param thread_index worker thread expected to send the buffer
786 * @param bi buffer index
787 * @param next_node next node edge index for buffer. Edge to next node
788 * must exist
789 */
Florin Coras2a7ea2e2019-10-16 22:06:08 -0700790always_inline void
Florin Coras5484daa2020-03-27 23:55:06 +0000791session_add_pending_tx_buffer (u32 thread_index, u32 bi, u32 next_node)
Florin Coras2a7ea2e2019-10-16 22:06:08 -0700792{
793 session_worker_t *wrk = session_main_get_worker (thread_index);
794 vec_add1 (wrk->pending_tx_buffers, bi);
Florin Coras5484daa2020-03-27 23:55:06 +0000795 vec_add1 (wrk->pending_tx_nexts, next_node);
Florin Coras7da88292021-03-18 15:04:34 -0700796 if (PREDICT_FALSE (wrk->state == SESSION_WRK_INTERRUPT))
797 vlib_node_set_interrupt_pending (wrk->vm, session_queue_node.index);
Florin Coras2a7ea2e2019-10-16 22:06:08 -0700798}
799
Florin Coras8f10b902021-04-02 18:32:00 -0700800always_inline void
801session_wrk_update_time (session_worker_t *wrk, f64 now)
802{
803 wrk->last_vlib_time = now;
804 wrk->last_vlib_us_time = wrk->last_vlib_time * CLIB_US_TIME_FREQ;
805}
806
Florin Coras7da88292021-03-18 15:04:34 -0700807void session_wrk_enable_adaptive_mode (session_worker_t *wrk);
Florin Coras8afe1b82021-11-17 23:38:54 -0800808fifo_segment_t *session_main_get_wrk_mqs_segment (void);
Dave Barach2a863912017-11-28 10:11:42 -0500809void session_node_enable_disable (u8 is_en);
Florin Coras1ee78302019-02-05 15:51:15 -0800810clib_error_t *vnet_session_enable_disable (vlib_main_t * vm, u8 is_en);
Damjan Mariondd298e82022-10-12 16:02:18 +0200811void session_wrk_handle_evts_main_rpc (void *);
Dave Barach2a863912017-11-28 10:11:42 -0500812
Andreas Schultz1a8c4372020-03-20 09:39:59 +0100813session_t *session_alloc_for_connection (transport_connection_t * tc);
Florin Coras2c876f92021-05-10 21:12:27 -0700814session_t *session_alloc_for_half_open (transport_connection_t *tc);
Andreas Schultz1a8c4372020-03-20 09:39:59 +0100815
Florin Coras53d8d4f2022-03-09 13:55:38 -0800816typedef void (pool_safe_realloc_rpc_fn) (void *rpc_args);
817
818typedef struct
819{
820 u8 ph[STRUCT_OFFSET_OF (pool_header_t, max_elts) + 4];
821 u32 flag;
822} pool_safe_realloc_header_t;
823
824STATIC_ASSERT_SIZEOF (pool_safe_realloc_header_t, sizeof (pool_header_t));
825
826#define POOL_REALLOC_SAFE_ELT_THRESH 32
827
828#define pool_realloc_flag(PH) \
829 ((pool_safe_realloc_header_t *) pool_header (PH))->flag
830
Florin Corasd3915dc2022-03-31 15:42:17 -0700831typedef struct pool_realloc_rpc_args_
832{
833 void **pool;
834 uword elt_size;
835 uword align;
836} pool_realloc_rpc_args_t;
Florin Coras53d8d4f2022-03-09 13:55:38 -0800837
838always_inline void
Florin Corasd3915dc2022-03-31 15:42:17 -0700839pool_program_safe_realloc_rpc (void *args)
Florin Coras53d8d4f2022-03-09 13:55:38 -0800840{
Florin Corasd3915dc2022-03-31 15:42:17 -0700841 vlib_main_t *vm = vlib_get_main ();
842 u32 free_elts, max_elts, n_alloc;
843 pool_realloc_rpc_args_t *pra;
844
845 ASSERT (vlib_get_thread_index () == 0);
846 pra = (pool_realloc_rpc_args_t *) args;
847
848 vlib_worker_thread_barrier_sync (vm);
849
850 free_elts = _pool_free_elts (*pra->pool, pra->elt_size);
851 if (free_elts < POOL_REALLOC_SAFE_ELT_THRESH)
852 {
853 max_elts = _vec_max_len (*pra->pool, pra->elt_size);
854 n_alloc = clib_max (2 * max_elts, POOL_REALLOC_SAFE_ELT_THRESH);
Florin Corase8d8d472022-11-09 15:13:16 -0800855 _pool_alloc (pra->pool, n_alloc, pra->align, 0, pra->elt_size);
Florin Corasd3915dc2022-03-31 15:42:17 -0700856 }
857 pool_realloc_flag (*pra->pool) = 0;
858 clib_mem_free (args);
859
860 vlib_worker_thread_barrier_release (vm);
861}
862
863always_inline void
864pool_program_safe_realloc (void **p, u32 elt_size, u32 align)
865{
866 pool_realloc_rpc_args_t *pra;
867
Florin Coras53d8d4f2022-03-09 13:55:38 -0800868 /* Reuse pad as a realloc flag */
Florin Corasd3915dc2022-03-31 15:42:17 -0700869 if (pool_realloc_flag (*p))
Florin Coras53d8d4f2022-03-09 13:55:38 -0800870 return;
871
Florin Corasd3915dc2022-03-31 15:42:17 -0700872 pra = clib_mem_alloc (sizeof (*pra));
873 pra->pool = p;
874 pra->elt_size = elt_size;
875 pra->align = align;
876 pool_realloc_flag (*p) = 1;
877
878 session_send_rpc_evt_to_thread (0 /* thread index */,
879 pool_program_safe_realloc_rpc, pra);
Florin Coras53d8d4f2022-03-09 13:55:38 -0800880}
881
Florin Coras53d8d4f2022-03-09 13:55:38 -0800882#define pool_needs_realloc(P) \
883 ((!P) || \
884 (vec_len (pool_header (P)->free_indices) < POOL_REALLOC_SAFE_ELT_THRESH && \
885 pool_free_elts (P) < POOL_REALLOC_SAFE_ELT_THRESH))
886
Florin Corasd3915dc2022-03-31 15:42:17 -0700887#define pool_get_aligned_safe(P, E, align) \
Florin Coras53d8d4f2022-03-09 13:55:38 -0800888 do \
889 { \
Florin Coras53d8d4f2022-03-09 13:55:38 -0800890 if (PREDICT_FALSE (pool_needs_realloc (P))) \
891 { \
892 if (PREDICT_FALSE (!(P))) \
893 { \
Florin Corasd3915dc2022-03-31 15:42:17 -0700894 pool_alloc_aligned (P, POOL_REALLOC_SAFE_ELT_THRESH, align); \
Florin Coras53d8d4f2022-03-09 13:55:38 -0800895 } \
Florin Coras5b47a6d2022-03-26 01:25:02 -0700896 else if (PREDICT_FALSE (!pool_free_elts (P))) \
Florin Coras53d8d4f2022-03-09 13:55:38 -0800897 { \
Florin Coras4b208302022-03-30 13:50:19 -0700898 vlib_workers_sync (); \
Florin Coras5b47a6d2022-03-26 01:25:02 -0700899 pool_alloc_aligned (P, pool_max_len (P), align); \
Florin Coras4b208302022-03-30 13:50:19 -0700900 vlib_workers_continue (); \
Florin Coras5b47a6d2022-03-26 01:25:02 -0700901 ALWAYS_ASSERT (pool_free_elts (P) > 0); \
Florin Coras53d8d4f2022-03-09 13:55:38 -0800902 } \
903 else \
904 { \
Florin Corasd3915dc2022-03-31 15:42:17 -0700905 pool_program_safe_realloc ((void **) &(P), sizeof ((P)[0]), \
906 _vec_align (P, align)); \
Florin Coras53d8d4f2022-03-09 13:55:38 -0800907 } \
908 } \
909 pool_get_aligned (P, E, align); \
910 } \
911 while (0)
912
Dave Barach68b0fb02017-02-28 15:15:56 -0500913#endif /* __included_session_h__ */
914
915/*
916 * fd.io coding-style-patch-verification: ON
917 *
918 * Local Variables:
919 * eval: (c-set-style "gnu")
920 * End:
921 */