Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1 | /* |
| 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 Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 18 | #include <vnet/session/stream_session.h> |
| 19 | #include <vnet/session/session_lookup.h> |
| 20 | #include <vnet/session/transport_interface.h> |
Florin Coras | 3e350af | 2017-03-30 02:54:28 -0700 | [diff] [blame] | 21 | #include <vnet/session/session_debug.h> |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 22 | #include <vnet/session/segment_manager.h> |
Florin Coras | e86a8ed | 2018-01-05 03:20:25 -0800 | [diff] [blame] | 23 | #include <svm/queue.h> |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 24 | |
| 25 | #define HALF_OPEN_LOOKUP_INVALID_VALUE ((u64)~0) |
| 26 | #define INVALID_INDEX ((u32)~0) |
Florin Coras | c3ddea8 | 2017-11-27 03:12:00 -0800 | [diff] [blame] | 27 | #define SESSION_PROXY_LISTENER_INDEX ((u32)~0 - 1) |
Florin Coras | 5fda7a3 | 2018-02-14 08:04:31 -0800 | [diff] [blame] | 28 | #define SESSION_LOCAL_HANDLE_PREFIX 0x7FFFFFFF |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 29 | |
| 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 | |
| 33 | typedef enum |
| 34 | { |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 35 | FIFO_EVENT_APP_RX, |
| 36 | FIFO_EVENT_APP_TX, |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 37 | FIFO_EVENT_TIMEOUT, |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 38 | FIFO_EVENT_DISCONNECT, |
Dave Barach | e5f1d27 | 2017-05-10 13:34:04 -0400 | [diff] [blame] | 39 | FIFO_EVENT_BUILTIN_RX, |
| 40 | FIFO_EVENT_RPC, |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame^] | 41 | } session_evt_type_t; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 42 | |
Dave Wallace | 33e002b | 2017-09-06 01:20:02 -0400 | [diff] [blame] | 43 | static inline const char * |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame^] | 44 | fifo_event_type_str (session_evt_type_t et) |
Dave Wallace | 33e002b | 2017-09-06 01:20:02 -0400 | [diff] [blame] | 45 | { |
| 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 Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame^] | 65 | typedef 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 Coras | 3e350af | 2017-03-30 02:54:28 -0700 | [diff] [blame] | 72 | #define foreach_session_input_error \ |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 73 | _(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 Coras | a332c46 | 2018-01-31 06:52:17 -0800 | [diff] [blame] | 81 | _(NO_SPACE, "Couldn't allocate a fifo pair") \ |
| 82 | _(SEG_CREATE, "Couldn't create a new segment") |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 83 | |
| 84 | typedef 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 Barach | e5f1d27 | 2017-05-10 13:34:04 -0400 | [diff] [blame] | 92 | typedef struct |
| 93 | { |
| 94 | void *fp; |
| 95 | void *arg; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame^] | 96 | } session_rpc_args_t; |
Dave Barach | e5f1d27 | 2017-05-10 13:34:04 -0400 | [diff] [blame] | 97 | |
Florin Coras | f8f516a | 2018-02-08 15:10:09 -0800 | [diff] [blame] | 98 | typedef u64 session_handle_t; |
| 99 | |
Florin Coras | 6792ec0 | 2017-03-13 03:49:51 -0700 | [diff] [blame] | 100 | /* *INDENT-OFF* */ |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame^] | 101 | typedef struct |
| 102 | { |
Florin Coras | 6792ec0 | 2017-03-13 03:49:51 -0700 | [diff] [blame] | 103 | u8 event_type; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 104 | u8 postponed; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame^] | 105 | 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 Coras | 6792ec0 | 2017-03-13 03:49:51 -0700 | [diff] [blame] | 116 | /* *INDENT-ON* */ |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 117 | |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame^] | 118 | #define SESSION_MSG_NULL { } |
| 119 | |
Florin Coras | 8e43d04 | 2018-05-04 15:46:57 -0700 | [diff] [blame] | 120 | typedef struct session_dgram_pre_hdr_ |
| 121 | { |
| 122 | u32 data_length; |
| 123 | u32 data_offset; |
| 124 | } session_dgram_pre_hdr_t; |
| 125 | |
| 126 | /* *INDENT-OFF* */ |
| 127 | typedef 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 | |
| 142 | STATIC_ASSERT (sizeof (session_dgram_hdr_t) == (SESSION_CONN_ID_LEN + 8), |
| 143 | "session conn id wrong length"); |
| 144 | |
| 145 | typedef 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 Coras | f08f26d | 2018-05-10 13:20:47 -0700 | [diff] [blame] | 160 | u16 n_segs_per_evt; |
Florin Coras | 8e43d04 | 2018-05-04 15:46:57 -0700 | [diff] [blame] | 161 | 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 Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 166 | /* Forward definition */ |
| 167 | typedef struct _session_manager_main session_manager_main_t; |
| 168 | |
| 169 | typedef int |
| 170 | (session_fifo_rx_fn) (vlib_main_t * vm, vlib_node_runtime_t * node, |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 171 | session_fifo_event_t * e0, stream_session_t * s0, |
Florin Coras | 8e43d04 | 2018-05-04 15:46:57 -0700 | [diff] [blame] | 172 | int *n_tx_pkts); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 173 | |
Florin Coras | d79b41e | 2017-03-04 05:37:52 -0800 | [diff] [blame] | 174 | extern session_fifo_rx_fn session_tx_fifo_peek_and_snd; |
| 175 | extern session_fifo_rx_fn session_tx_fifo_dequeue_and_snd; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 176 | extern session_fifo_rx_fn session_tx_fifo_dequeue_internal; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 177 | |
Florin Coras | 6534b7a | 2017-07-18 05:38:03 -0400 | [diff] [blame] | 178 | u8 session_node_lookup_fifo_event (svm_fifo_t * f, session_fifo_event_t * e); |
| 179 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 180 | struct _session_manager_main |
| 181 | { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 182 | /** Per worker thread session pools */ |
| 183 | stream_session_t **sessions; |
| 184 | |
Florin Coras | 84a30ef | 2018-01-24 10:49:23 -0800 | [diff] [blame] | 185 | /** Per worker-thread session pool peekers rw locks */ |
| 186 | clib_rwlock_t *peekers_rw_locks; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 187 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 188 | /** Per-proto, per-worker enqueue epoch counters */ |
Florin Coras | 93e6580 | 2017-11-29 00:07:11 -0500 | [diff] [blame] | 189 | u32 *current_enqueue_epoch[TRANSPORT_N_PROTO]; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 190 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 191 | /** Per-proto, per-worker thread vector of sessions to enqueue */ |
| 192 | u32 **session_to_enqueue[TRANSPORT_N_PROTO]; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 193 | |
| 194 | /** per-worker tx buffer free lists */ |
| 195 | u32 **tx_buffers; |
| 196 | |
| 197 | /** Per worker-thread vector of partially read events */ |
Dave Barach | acd2a6a | 2017-05-16 17:41:34 -0400 | [diff] [blame] | 198 | session_fifo_event_t **free_event_vector; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 199 | |
| 200 | /** per-worker active event vectors */ |
Dave Barach | acd2a6a | 2017-05-16 17:41:34 -0400 | [diff] [blame] | 201 | session_fifo_event_t **pending_event_vector; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 202 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 203 | /** per-worker postponed disconnects */ |
| 204 | session_fifo_event_t **pending_disconnects; |
| 205 | |
Florin Coras | 8e43d04 | 2018-05-04 15:46:57 -0700 | [diff] [blame] | 206 | /** per-worker session context */ |
| 207 | session_tx_context_t *ctx; |
| 208 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 209 | /** vpp fifo event queue */ |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame^] | 210 | svm_msg_q_t **vpp_event_queues; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 211 | |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 212 | /** Event queues memfd segment initialized only if so configured */ |
| 213 | ssvm_private_t evt_qs_segment; |
| 214 | |
Florin Coras | 93e6580 | 2017-11-29 00:07:11 -0500 | [diff] [blame] | 215 | /** Unique segment name counter */ |
| 216 | u32 unique_segment_name_counter; |
| 217 | |
| 218 | /** Per transport rx function that can either dequeue or peek */ |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 219 | 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 Coras | 93e6580 | 2017-11-29 00:07:11 -0500 | [diff] [blame] | 225 | |
| 226 | /** Session manager is enabled */ |
| 227 | u8 is_enabled; |
| 228 | |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 229 | /** vpp fifo event queue configured length */ |
| 230 | u32 configured_event_queue_length; |
| 231 | |
Florin Coras | 93e6580 | 2017-11-29 00:07:11 -0500 | [diff] [blame] | 232 | /* |
| 233 | * Config parameters |
| 234 | */ |
| 235 | |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 236 | /** Session ssvm segment configs*/ |
| 237 | uword session_baseva; |
Florin Coras | a332c46 | 2018-01-31 06:52:17 -0800 | [diff] [blame] | 238 | uword session_va_space_size; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 239 | u32 evt_qs_segment_size; |
| 240 | u8 evt_qs_use_memfd_seg; |
| 241 | |
| 242 | /** Session table size parameters */ |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 243 | 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 Coras | 93e6580 | 2017-11-29 00:07:11 -0500 | [diff] [blame] | 252 | /** Transport table (preallocation) size parameters */ |
| 253 | u32 local_endpoints_table_memory; |
| 254 | u32 local_endpoints_table_buckets; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 255 | |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 256 | /** Preallocate session config parameter */ |
| 257 | u32 preallocated_sessions; |
| 258 | |
Florin Coras | c1a448b | 2018-04-20 10:51:49 -0700 | [diff] [blame] | 259 | #if SESSION_DEBUG |
Florin Coras | 3e350af | 2017-03-30 02:54:28 -0700 | [diff] [blame] | 260 | /** |
| 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 Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 267 | }; |
| 268 | |
| 269 | extern session_manager_main_t session_manager_main; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 270 | extern vlib_node_registration_t session_queue_node; |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 271 | extern 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 Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 275 | |
| 276 | /* |
| 277 | * Session manager function |
| 278 | */ |
| 279 | always_inline session_manager_main_t * |
| 280 | vnet_get_session_manager_main () |
| 281 | { |
| 282 | return &session_manager_main; |
| 283 | } |
| 284 | |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 285 | always_inline u8 |
| 286 | stream_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 Barach | 52851e6 | 2017-08-07 09:35:25 -0400 | [diff] [blame] | 291 | /* || 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 Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 295 | return 0; |
| 296 | return 1; |
| 297 | } |
| 298 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 299 | stream_session_t *session_alloc (u32 thread_index); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 300 | int session_alloc_fifos (segment_manager_t * sm, stream_session_t * s); |
| 301 | void session_free (stream_session_t * s); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 302 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 303 | always_inline stream_session_t * |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 304 | session_get (u32 si, u32 thread_index) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 305 | { |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 306 | ASSERT (stream_session_is_valid (si, thread_index)); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 307 | return pool_elt_at_index (session_manager_main.sessions[thread_index], si); |
| 308 | } |
| 309 | |
| 310 | always_inline stream_session_t * |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 311 | session_get_if_valid (u64 si, u32 thread_index) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 312 | { |
| 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 Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 319 | ASSERT (stream_session_is_valid (si, thread_index)); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 320 | return pool_elt_at_index (session_manager_main.sessions[thread_index], si); |
| 321 | } |
| 322 | |
Florin Coras | f8f516a | 2018-02-08 15:10:09 -0800 | [diff] [blame] | 323 | always_inline session_handle_t |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 324 | session_handle (stream_session_t * s) |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 325 | { |
| 326 | return ((u64) s->thread_index << 32) | (u64) s->session_index; |
| 327 | } |
| 328 | |
| 329 | always_inline u32 |
Florin Coras | f8f516a | 2018-02-08 15:10:09 -0800 | [diff] [blame] | 330 | session_index_from_handle (session_handle_t handle) |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 331 | { |
| 332 | return handle & 0xFFFFFFFF; |
| 333 | } |
| 334 | |
| 335 | always_inline u32 |
Florin Coras | f8f516a | 2018-02-08 15:10:09 -0800 | [diff] [blame] | 336 | session_thread_from_handle (session_handle_t handle) |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 337 | { |
| 338 | return handle >> 32; |
| 339 | } |
| 340 | |
| 341 | always_inline void |
Florin Coras | f8f516a | 2018-02-08 15:10:09 -0800 | [diff] [blame] | 342 | session_parse_handle (session_handle_t handle, u32 * index, |
| 343 | u32 * thread_index) |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 344 | { |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 345 | *index = session_index_from_handle (handle); |
| 346 | *thread_index = session_thread_from_handle (handle); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | always_inline stream_session_t * |
Florin Coras | f8f516a | 2018-02-08 15:10:09 -0800 | [diff] [blame] | 350 | session_get_from_handle (session_handle_t handle) |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 351 | { |
| 352 | session_manager_main_t *smm = &session_manager_main; |
Florin Coras | f8f516a | 2018-02-08 15:10:09 -0800 | [diff] [blame] | 353 | 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 | |
| 358 | always_inline stream_session_t * |
| 359 | session_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 | |
| 366 | always_inline u8 |
| 367 | session_handle_is_local (session_handle_t handle) |
| 368 | { |
Florin Coras | 5fda7a3 | 2018-02-14 08:04:31 -0800 | [diff] [blame] | 369 | if ((handle >> 32) == SESSION_LOCAL_HANDLE_PREFIX) |
Florin Coras | f8f516a | 2018-02-08 15:10:09 -0800 | [diff] [blame] | 370 | return 1; |
| 371 | return 0; |
| 372 | } |
| 373 | |
| 374 | always_inline transport_proto_t |
| 375 | session_type_transport_proto (session_type_t st) |
| 376 | { |
| 377 | return (st >> 1); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 378 | } |
| 379 | |
Florin Coras | 5fda7a3 | 2018-02-14 08:04:31 -0800 | [diff] [blame] | 380 | always_inline u8 |
| 381 | session_type_is_ip4 (session_type_t st) |
| 382 | { |
| 383 | return (st & 1); |
| 384 | } |
| 385 | |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 386 | always_inline transport_proto_t |
| 387 | session_get_transport_proto (stream_session_t * s) |
| 388 | { |
| 389 | return (s->session_type >> 1); |
| 390 | } |
| 391 | |
Florin Coras | f8f516a | 2018-02-08 15:10:09 -0800 | [diff] [blame] | 392 | always_inline fib_protocol_t |
| 393 | session_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 Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 399 | always_inline session_type_t |
| 400 | session_type_from_proto_and_ip (transport_proto_t proto, u8 is_ip4) |
| 401 | { |
| 402 | return (proto << 1 | is_ip4); |
| 403 | } |
| 404 | |
Florin Coras | f8f516a | 2018-02-08 15:10:09 -0800 | [diff] [blame] | 405 | always_inline u8 |
| 406 | session_has_transport (stream_session_t * s) |
| 407 | { |
| 408 | return (session_get_transport_proto (s) != TRANSPORT_PROTO_NONE); |
| 409 | } |
| 410 | |
Florin Coras | f08f26d | 2018-05-10 13:20:47 -0700 | [diff] [blame] | 411 | transport_service_type_t session_transport_service_type (stream_session_t *); |
| 412 | transport_tx_fn_type_t session_transport_tx_fn_type (stream_session_t *); |
| 413 | u8 session_tx_is_dgram (stream_session_t * s); |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 414 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 415 | /** |
| 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 | */ |
| 425 | always_inline void |
| 426 | session_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 Coras | 84a30ef | 2018-01-24 10:49:23 -0800 | [diff] [blame] | 431 | clib_rwlock_reader_lock (&smm->peekers_rw_locks[thread_index]); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 432 | } |
| 433 | |
| 434 | always_inline void |
| 435 | session_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 Coras | 84a30ef | 2018-01-24 10:49:23 -0800 | [diff] [blame] | 440 | clib_rwlock_reader_unlock (&smm->peekers_rw_locks[thread_index]); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 441 | } |
| 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 | */ |
| 448 | always_inline stream_session_t * |
| 449 | session_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 Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 466 | always_inline u32 |
Florin Coras | d2aab83 | 2018-05-22 11:39:59 -0700 | [diff] [blame] | 467 | transport_max_rx_enqueue (transport_connection_t * tc) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 468 | { |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 469 | stream_session_t *s = session_get (tc->s_index, tc->thread_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 470 | return svm_fifo_max_enqueue (s->server_rx_fifo); |
| 471 | } |
| 472 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 473 | always_inline u32 |
Florin Coras | d2aab83 | 2018-05-22 11:39:59 -0700 | [diff] [blame] | 474 | transport_rx_fifo_size (transport_connection_t * tc) |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 475 | { |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 476 | stream_session_t *s = session_get (tc->s_index, tc->thread_index); |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 477 | return s->server_rx_fifo->nitems; |
| 478 | } |
| 479 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 480 | always_inline u32 |
Florin Coras | d2aab83 | 2018-05-22 11:39:59 -0700 | [diff] [blame] | 481 | transport_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 | |
| 487 | always_inline u32 |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 488 | session_get_index (stream_session_t * s) |
| 489 | { |
| 490 | return (s - session_manager_main.sessions[s->thread_index]); |
| 491 | } |
| 492 | |
| 493 | always_inline stream_session_t * |
| 494 | session_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 | |
| 514 | transport_connection_t *session_get_transport (stream_session_t * s); |
| 515 | |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 516 | u32 session_tx_fifo_max_dequeue (transport_connection_t * tc); |
Florin Coras | 93992a9 | 2017-05-24 18:03:56 -0700 | [diff] [blame] | 517 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 518 | int |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 519 | session_enqueue_stream_connection (transport_connection_t * tc, |
| 520 | vlib_buffer_t * b, u32 offset, |
| 521 | u8 queue_event, u8 is_in_order); |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 522 | int 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 Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 526 | int stream_session_peek_bytes (transport_connection_t * tc, u8 * buffer, |
| 527 | u32 offset, u32 max_bytes); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 528 | u32 stream_session_dequeue_drop (transport_connection_t * tc, u32 max_bytes); |
| 529 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 530 | int session_stream_connect_notify (transport_connection_t * tc, u8 is_fail); |
| 531 | int session_dgram_connect_notify (transport_connection_t * tc, |
| 532 | u32 old_thread_index, |
| 533 | stream_session_t ** new_session); |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 534 | int session_dequeue_notify (stream_session_t * s); |
Florin Coras | c28764f | 2017-04-26 00:08:42 -0700 | [diff] [blame] | 535 | void stream_session_init_fifos_pointers (transport_connection_t * tc, |
| 536 | u32 rx_pointer, u32 tx_pointer); |
Florin Coras | e69f495 | 2017-03-07 10:06:24 -0800 | [diff] [blame] | 537 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 538 | void stream_session_accept_notify (transport_connection_t * tc); |
| 539 | void stream_session_disconnect_notify (transport_connection_t * tc); |
| 540 | void stream_session_delete_notify (transport_connection_t * tc); |
| 541 | void stream_session_reset_notify (transport_connection_t * tc); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 542 | int stream_session_accept (transport_connection_t * tc, u32 listener_index, |
| 543 | u8 notify); |
| 544 | int session_open (u32 app_index, session_endpoint_t * tep, u32 opaque); |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 545 | int stream_session_listen (stream_session_t * s, session_endpoint_t * tep); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 546 | int stream_session_stop_listen (stream_session_t * s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 547 | void stream_session_disconnect (stream_session_t * s); |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 548 | void stream_session_disconnect_transport (stream_session_t * s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 549 | void stream_session_cleanup (stream_session_t * s); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame^] | 550 | int session_send_io_evt_to_thread (svm_fifo_t * f, |
| 551 | session_evt_type_t evt_type); |
| 552 | int session_send_io_evt_to_thread_custom (svm_fifo_t * f, u32 thread_index, |
| 553 | session_evt_type_t evt_type); |
| 554 | void session_send_rpc_evt_to_thread (u32 thread_index, void *fp, |
| 555 | void *rpc_args); |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 556 | ssvm_private_t *session_manager_get_evt_q_segment (void); |
Florin Coras | 3eb5062 | 2017-07-13 01:24:57 -0400 | [diff] [blame] | 557 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 558 | u8 *format_stream_session (u8 * s, va_list * args); |
Florin Coras | 3eb5062 | 2017-07-13 01:24:57 -0400 | [diff] [blame] | 559 | uword unformat_stream_session (unformat_input_t * input, va_list * args); |
| 560 | uword unformat_transport_connection (unformat_input_t * input, |
| 561 | va_list * args); |
| 562 | |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 563 | void session_register_transport (transport_proto_t transport_proto, |
| 564 | const transport_proto_vft_t * vft, u8 is_ip4, |
| 565 | u32 output_node); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 566 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 567 | clib_error_t *vnet_session_enable_disable (vlib_main_t * vm, u8 is_en); |
| 568 | |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame^] | 569 | always_inline svm_msg_q_t * |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 570 | session_manager_get_vpp_event_queue (u32 thread_index) |
| 571 | { |
| 572 | return session_manager_main.vpp_event_queues[thread_index]; |
| 573 | } |
| 574 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 575 | int session_manager_flush_enqueue_events (u8 proto, u32 thread_index); |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 576 | int session_manager_flush_all_enqueue_events (u8 transport_proto); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 577 | |
| 578 | always_inline u64 |
| 579 | listen_session_get_handle (stream_session_t * s) |
| 580 | { |
| 581 | ASSERT (s->session_state == SESSION_STATE_LISTENING); |
Florin Coras | 5c9083d | 2018-04-13 06:39:07 -0700 | [diff] [blame] | 582 | return session_handle (s); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 583 | } |
| 584 | |
| 585 | always_inline stream_session_t * |
Florin Coras | f8f516a | 2018-02-08 15:10:09 -0800 | [diff] [blame] | 586 | listen_session_get_from_handle (session_handle_t handle) |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 587 | { |
Florin Coras | 5c9083d | 2018-04-13 06:39:07 -0700 | [diff] [blame] | 588 | return session_get_from_handle (handle); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 589 | } |
| 590 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 591 | always_inline void |
Florin Coras | 5c9083d | 2018-04-13 06:39:07 -0700 | [diff] [blame] | 592 | listen_session_parse_handle (session_handle_t handle, u32 * index, |
| 593 | u32 * thread_index) |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 594 | { |
Florin Coras | 5c9083d | 2018-04-13 06:39:07 -0700 | [diff] [blame] | 595 | session_parse_handle (handle, index, thread_index); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 596 | } |
| 597 | |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 598 | always_inline stream_session_t * |
Florin Coras | 5c9083d | 2018-04-13 06:39:07 -0700 | [diff] [blame] | 599 | listen_session_new (u8 thread_index, session_type_t type) |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 600 | { |
| 601 | stream_session_t *s; |
Florin Coras | 5c9083d | 2018-04-13 06:39:07 -0700 | [diff] [blame] | 602 | s = session_alloc (thread_index); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 603 | s->session_type = type; |
| 604 | s->session_state = SESSION_STATE_LISTENING; |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 605 | return s; |
| 606 | } |
| 607 | |
| 608 | always_inline stream_session_t * |
Florin Coras | 5c9083d | 2018-04-13 06:39:07 -0700 | [diff] [blame] | 609 | listen_session_get (u32 index) |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 610 | { |
Florin Coras | 5c9083d | 2018-04-13 06:39:07 -0700 | [diff] [blame] | 611 | return session_get (index, 0); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 612 | } |
| 613 | |
| 614 | always_inline void |
| 615 | listen_session_del (stream_session_t * s) |
| 616 | { |
Florin Coras | 5c9083d | 2018-04-13 06:39:07 -0700 | [diff] [blame] | 617 | session_free (s); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 618 | } |
| 619 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 620 | transport_connection_t *listen_session_get_transport (stream_session_t * s); |
| 621 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 622 | int |
| 623 | listen_session_get_local_session_endpoint (stream_session_t * listener, |
| 624 | session_endpoint_t * sep); |
| 625 | |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 626 | void session_flush_frames_main_thread (vlib_main_t * vm); |
| 627 | |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 628 | always_inline u8 |
| 629 | session_manager_is_enabled () |
| 630 | { |
| 631 | return session_manager_main.is_enabled == 1; |
| 632 | } |
| 633 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 634 | #define session_cli_return_if_not_enabled() \ |
| 635 | do { \ |
| 636 | if (!session_manager_main.is_enabled) \ |
| 637 | return clib_error_return(0, "session layer is not enabled"); \ |
| 638 | } while (0) |
| 639 | |
Dave Barach | 2a86391 | 2017-11-28 10:11:42 -0500 | [diff] [blame] | 640 | void session_node_enable_disable (u8 is_en); |
| 641 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 642 | #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 | */ |