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 | /** |
| 16 | * @file |
| 17 | * @brief Session and session manager |
| 18 | */ |
| 19 | |
| 20 | #include <vnet/session/session.h> |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 21 | #include <vnet/session/session_debug.h> |
| 22 | #include <vnet/session/application.h> |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 23 | #include <vlibmemory/api.h> |
| 24 | #include <vnet/dpo/load_balance.h> |
| 25 | #include <vnet/fib/ip4_fib.h> |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 26 | |
| 27 | session_manager_main_t session_manager_main; |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 28 | extern transport_proto_vft_t *tp_vfts; |
Florin Coras | 3eb5062 | 2017-07-13 01:24:57 -0400 | [diff] [blame] | 29 | |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 30 | static inline int |
| 31 | session_send_evt_to_thread (void *data, void *args, u32 thread_index, |
| 32 | session_evt_type_t evt_type) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 33 | { |
Florin Coras | 52207f1 | 2018-07-12 14:48:06 -0700 | [diff] [blame] | 34 | session_event_t *evt; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 35 | svm_msg_q_msg_t msg; |
| 36 | svm_msg_q_t *mq; |
Florin Coras | b2371c2 | 2018-05-31 17:14:10 -0700 | [diff] [blame] | 37 | u32 tries = 0, max_tries; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 38 | |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 39 | mq = session_manager_get_vpp_event_queue (thread_index); |
| 40 | while (svm_msg_q_try_lock (mq)) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 41 | { |
Florin Coras | b2371c2 | 2018-05-31 17:14:10 -0700 | [diff] [blame] | 42 | max_tries = vlib_get_current_process (vlib_get_main ())? 1e6 : 3; |
| 43 | if (tries++ == max_tries) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 44 | { |
| 45 | SESSION_DBG ("failed to enqueue evt"); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 46 | return -1; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 47 | } |
| 48 | } |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 49 | if (PREDICT_FALSE (svm_msg_q_ring_is_full (mq, SESSION_MQ_IO_EVT_RING))) |
| 50 | { |
| 51 | svm_msg_q_unlock (mq); |
| 52 | return -2; |
| 53 | } |
| 54 | msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING); |
| 55 | if (PREDICT_FALSE (svm_msg_q_msg_is_invalid (&msg))) |
| 56 | { |
| 57 | svm_msg_q_unlock (mq); |
| 58 | return -2; |
| 59 | } |
Florin Coras | 52207f1 | 2018-07-12 14:48:06 -0700 | [diff] [blame] | 60 | evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 61 | evt->event_type = evt_type; |
| 62 | switch (evt_type) |
| 63 | { |
| 64 | case FIFO_EVENT_RPC: |
| 65 | evt->rpc_args.fp = data; |
| 66 | evt->rpc_args.arg = args; |
| 67 | break; |
| 68 | case FIFO_EVENT_APP_TX: |
| 69 | case FIFO_EVENT_BUILTIN_RX: |
| 70 | evt->fifo = data; |
| 71 | break; |
| 72 | case FIFO_EVENT_DISCONNECT: |
| 73 | evt->session_handle = session_handle ((stream_session_t *) data); |
| 74 | break; |
| 75 | default: |
| 76 | clib_warning ("evt unhandled!"); |
| 77 | svm_msg_q_unlock (mq); |
| 78 | return -1; |
| 79 | } |
| 80 | |
Florin Coras | 52207f1 | 2018-07-12 14:48:06 -0700 | [diff] [blame] | 81 | svm_msg_q_add_and_unlock (mq, &msg); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 82 | return 0; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 83 | } |
| 84 | |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 85 | int |
| 86 | session_send_io_evt_to_thread (svm_fifo_t * f, session_evt_type_t evt_type) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 87 | { |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 88 | return session_send_evt_to_thread (f, 0, f->master_thread_index, evt_type); |
| 89 | } |
| 90 | |
| 91 | int |
| 92 | session_send_io_evt_to_thread_custom (svm_fifo_t * f, u32 thread_index, |
| 93 | session_evt_type_t evt_type) |
| 94 | { |
| 95 | return session_send_evt_to_thread (f, 0, thread_index, evt_type); |
| 96 | } |
| 97 | |
| 98 | int |
| 99 | session_send_ctrl_evt_to_thread (stream_session_t * s, |
| 100 | session_evt_type_t evt_type) |
| 101 | { |
| 102 | /* only event supported for now is disconnect */ |
| 103 | ASSERT (evt_type == FIFO_EVENT_DISCONNECT); |
| 104 | return session_send_evt_to_thread (s, 0, s->thread_index, |
| 105 | FIFO_EVENT_DISCONNECT); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | void |
| 109 | session_send_rpc_evt_to_thread (u32 thread_index, void *fp, void *rpc_args) |
| 110 | { |
| 111 | if (thread_index != vlib_get_thread_index ()) |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 112 | session_send_evt_to_thread (fp, rpc_args, thread_index, FIFO_EVENT_RPC); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 113 | else |
| 114 | { |
| 115 | void (*fnp) (void *) = fp; |
| 116 | fnp (rpc_args); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | stream_session_t * |
| 121 | session_alloc (u32 thread_index) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 122 | { |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 123 | session_manager_main_t *smm = &session_manager_main; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 124 | stream_session_t *s; |
| 125 | u8 will_expand = 0; |
| 126 | pool_get_aligned_will_expand (smm->sessions[thread_index], will_expand, |
| 127 | CLIB_CACHE_LINE_BYTES); |
| 128 | /* If we have peekers, let them finish */ |
Florin Coras | 84a30ef | 2018-01-24 10:49:23 -0800 | [diff] [blame] | 129 | if (PREDICT_FALSE (will_expand && vlib_num_workers ())) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 130 | { |
Florin Coras | 84a30ef | 2018-01-24 10:49:23 -0800 | [diff] [blame] | 131 | clib_rwlock_writer_lock (&smm->peekers_rw_locks[thread_index]); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 132 | pool_get_aligned (session_manager_main.sessions[thread_index], s, |
| 133 | CLIB_CACHE_LINE_BYTES); |
Florin Coras | 84a30ef | 2018-01-24 10:49:23 -0800 | [diff] [blame] | 134 | clib_rwlock_writer_unlock (&smm->peekers_rw_locks[thread_index]); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 135 | } |
| 136 | else |
| 137 | { |
| 138 | pool_get_aligned (session_manager_main.sessions[thread_index], s, |
| 139 | CLIB_CACHE_LINE_BYTES); |
| 140 | } |
| 141 | memset (s, 0, sizeof (*s)); |
| 142 | s->session_index = s - session_manager_main.sessions[thread_index]; |
| 143 | s->thread_index = thread_index; |
| 144 | return s; |
| 145 | } |
| 146 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 147 | void |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 148 | session_free (stream_session_t * s) |
| 149 | { |
| 150 | pool_put (session_manager_main.sessions[s->thread_index], s); |
| 151 | if (CLIB_DEBUG) |
| 152 | memset (s, 0xFA, sizeof (*s)); |
| 153 | } |
| 154 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 155 | int |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 156 | session_alloc_fifos (segment_manager_t * sm, stream_session_t * s) |
| 157 | { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 158 | svm_fifo_t *server_rx_fifo = 0, *server_tx_fifo = 0; |
| 159 | u32 fifo_segment_index; |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 160 | int rv; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 161 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 162 | if ((rv = segment_manager_alloc_session_fifos (sm, &server_rx_fifo, |
| 163 | &server_tx_fifo, |
| 164 | &fifo_segment_index))) |
| 165 | return rv; |
| 166 | /* Initialize backpointers */ |
| 167 | server_rx_fifo->master_session_index = s->session_index; |
| 168 | server_rx_fifo->master_thread_index = s->thread_index; |
| 169 | |
| 170 | server_tx_fifo->master_session_index = s->session_index; |
| 171 | server_tx_fifo->master_thread_index = s->thread_index; |
| 172 | |
| 173 | s->server_rx_fifo = server_rx_fifo; |
| 174 | s->server_tx_fifo = server_tx_fifo; |
| 175 | s->svm_segment_index = fifo_segment_index; |
| 176 | return 0; |
| 177 | } |
| 178 | |
| 179 | static stream_session_t * |
| 180 | session_alloc_for_connection (transport_connection_t * tc) |
| 181 | { |
| 182 | stream_session_t *s; |
| 183 | u32 thread_index = tc->thread_index; |
| 184 | |
Florin Coras | 40903ac | 2018-06-10 14:41:23 -0700 | [diff] [blame] | 185 | ASSERT (thread_index == vlib_get_thread_index () |
| 186 | || transport_protocol_is_cl (tc->proto)); |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 187 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 188 | s = session_alloc (thread_index); |
| 189 | s->session_type = session_type_from_proto_and_ip (tc->proto, tc->is_ip4); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 190 | s->session_state = SESSION_STATE_CONNECTING; |
Andreas Schultz | c1214bd | 2017-12-08 15:12:36 +0100 | [diff] [blame] | 191 | s->enqueue_epoch = ~0; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 192 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 193 | /* Attach transport to session and vice versa */ |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 194 | s->connection_index = tc->c_index; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 195 | tc->s_index = s->session_index; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 196 | return s; |
| 197 | } |
| 198 | |
| 199 | static int |
| 200 | session_alloc_and_init (segment_manager_t * sm, transport_connection_t * tc, |
| 201 | u8 alloc_fifos, stream_session_t ** ret_s) |
| 202 | { |
| 203 | stream_session_t *s; |
| 204 | int rv; |
| 205 | |
| 206 | s = session_alloc_for_connection (tc); |
| 207 | if (alloc_fifos && (rv = session_alloc_fifos (sm, s))) |
| 208 | { |
| 209 | session_free (s); |
Florin Coras | 29ca16f | 2017-11-02 18:14:17 -0400 | [diff] [blame] | 210 | *ret_s = 0; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 211 | return rv; |
| 212 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 213 | |
| 214 | /* Add to the main lookup table */ |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 215 | session_lookup_add_connection (tc, session_handle (s)); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 216 | |
| 217 | *ret_s = s; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 218 | return 0; |
| 219 | } |
| 220 | |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 221 | /** |
| 222 | * Discards bytes from buffer chain |
| 223 | * |
| 224 | * It discards n_bytes_to_drop starting at first buffer after chain_b |
| 225 | */ |
| 226 | always_inline void |
| 227 | session_enqueue_discard_chain_bytes (vlib_main_t * vm, vlib_buffer_t * b, |
| 228 | vlib_buffer_t ** chain_b, |
| 229 | u32 n_bytes_to_drop) |
| 230 | { |
| 231 | vlib_buffer_t *next = *chain_b; |
| 232 | u32 to_drop = n_bytes_to_drop; |
| 233 | ASSERT (b->flags & VLIB_BUFFER_NEXT_PRESENT); |
| 234 | while (to_drop && (next->flags & VLIB_BUFFER_NEXT_PRESENT)) |
| 235 | { |
| 236 | next = vlib_get_buffer (vm, next->next_buffer); |
| 237 | if (next->current_length > to_drop) |
| 238 | { |
| 239 | vlib_buffer_advance (next, to_drop); |
| 240 | to_drop = 0; |
| 241 | } |
| 242 | else |
| 243 | { |
| 244 | to_drop -= next->current_length; |
| 245 | next->current_length = 0; |
| 246 | } |
| 247 | } |
| 248 | *chain_b = next; |
| 249 | |
| 250 | if (to_drop == 0) |
| 251 | b->total_length_not_including_first_buffer -= n_bytes_to_drop; |
| 252 | } |
| 253 | |
| 254 | /** |
| 255 | * Enqueue buffer chain tail |
| 256 | */ |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 257 | always_inline int |
| 258 | session_enqueue_chain_tail (stream_session_t * s, vlib_buffer_t * b, |
| 259 | u32 offset, u8 is_in_order) |
| 260 | { |
| 261 | vlib_buffer_t *chain_b; |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 262 | u32 chain_bi, len, diff; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 263 | vlib_main_t *vm = vlib_get_main (); |
Florin Coras | b2215d6 | 2017-08-01 16:56:58 -0700 | [diff] [blame] | 264 | u8 *data; |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 265 | u32 written = 0; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 266 | int rv = 0; |
| 267 | |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 268 | if (is_in_order && offset) |
| 269 | { |
| 270 | diff = offset - b->current_length; |
| 271 | if (diff > b->total_length_not_including_first_buffer) |
| 272 | return 0; |
| 273 | chain_b = b; |
| 274 | session_enqueue_discard_chain_bytes (vm, b, &chain_b, diff); |
| 275 | chain_bi = vlib_get_buffer_index (vm, chain_b); |
| 276 | } |
| 277 | else |
| 278 | chain_bi = b->next_buffer; |
| 279 | |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 280 | do |
| 281 | { |
| 282 | chain_b = vlib_get_buffer (vm, chain_bi); |
| 283 | data = vlib_buffer_get_current (chain_b); |
| 284 | len = chain_b->current_length; |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 285 | if (!len) |
| 286 | continue; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 287 | if (is_in_order) |
| 288 | { |
| 289 | rv = svm_fifo_enqueue_nowait (s->server_rx_fifo, len, data); |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 290 | if (rv == len) |
| 291 | { |
| 292 | written += rv; |
| 293 | } |
| 294 | else if (rv < len) |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 295 | { |
| 296 | return (rv > 0) ? (written + rv) : written; |
| 297 | } |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 298 | else if (rv > len) |
| 299 | { |
| 300 | written += rv; |
| 301 | |
| 302 | /* written more than what was left in chain */ |
| 303 | if (written > b->total_length_not_including_first_buffer) |
| 304 | return written; |
| 305 | |
| 306 | /* drop the bytes that have already been delivered */ |
| 307 | session_enqueue_discard_chain_bytes (vm, b, &chain_b, rv - len); |
| 308 | } |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 309 | } |
| 310 | else |
| 311 | { |
| 312 | rv = svm_fifo_enqueue_with_offset (s->server_rx_fifo, offset, len, |
| 313 | data); |
| 314 | if (rv) |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 315 | { |
| 316 | clib_warning ("failed to enqueue multi-buffer seg"); |
| 317 | return -1; |
| 318 | } |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 319 | offset += len; |
| 320 | } |
| 321 | } |
| 322 | while ((chain_bi = (chain_b->flags & VLIB_BUFFER_NEXT_PRESENT) |
| 323 | ? chain_b->next_buffer : 0)); |
| 324 | |
| 325 | if (is_in_order) |
| 326 | return written; |
| 327 | |
| 328 | return 0; |
| 329 | } |
| 330 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 331 | /* |
| 332 | * Enqueue data for delivery to session peer. Does not notify peer of enqueue |
| 333 | * event but on request can queue notification events for later delivery by |
| 334 | * calling stream_server_flush_enqueue_events(). |
| 335 | * |
| 336 | * @param tc Transport connection which is to be enqueued data |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 337 | * @param b Buffer to be enqueued |
| 338 | * @param offset Offset at which to start enqueueing if out-of-order |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 339 | * @param queue_event Flag to indicate if peer is to be notified or if event |
| 340 | * is to be queued. The former is useful when more data is |
| 341 | * enqueued and only one event is to be generated. |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 342 | * @param is_in_order Flag to indicate if data is in order |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 343 | * @return Number of bytes enqueued or a negative value if enqueueing failed. |
| 344 | */ |
| 345 | int |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 346 | session_enqueue_stream_connection (transport_connection_t * tc, |
| 347 | vlib_buffer_t * b, u32 offset, |
| 348 | u8 queue_event, u8 is_in_order) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 349 | { |
| 350 | stream_session_t *s; |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 351 | int enqueued = 0, rv, in_order_off; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 352 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 353 | s = session_get (tc->s_index, tc->thread_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 354 | |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 355 | if (is_in_order) |
| 356 | { |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 357 | enqueued = svm_fifo_enqueue_nowait (s->server_rx_fifo, |
| 358 | b->current_length, |
| 359 | vlib_buffer_get_current (b)); |
| 360 | if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) |
| 361 | && enqueued >= 0)) |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 362 | { |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 363 | in_order_off = enqueued > b->current_length ? enqueued : 0; |
| 364 | rv = session_enqueue_chain_tail (s, b, in_order_off, 1); |
| 365 | if (rv > 0) |
| 366 | enqueued += rv; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 367 | } |
| 368 | } |
| 369 | else |
| 370 | { |
| 371 | rv = svm_fifo_enqueue_with_offset (s->server_rx_fifo, offset, |
| 372 | b->current_length, |
| 373 | vlib_buffer_get_current (b)); |
| 374 | if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) && !rv)) |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 375 | session_enqueue_chain_tail (s, b, offset + b->current_length, 0); |
| 376 | /* if something was enqueued, report even this as success for ooo |
| 377 | * segment handling */ |
| 378 | return rv; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 379 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 380 | |
| 381 | if (queue_event) |
| 382 | { |
| 383 | /* Queue RX event on this fifo. Eventually these will need to be flushed |
| 384 | * by calling stream_server_flush_enqueue_events () */ |
| 385 | session_manager_main_t *smm = vnet_get_session_manager_main (); |
| 386 | u32 thread_index = s->thread_index; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 387 | u32 enqueue_epoch = smm->current_enqueue_epoch[tc->proto][thread_index]; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 388 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 389 | if (s->enqueue_epoch != enqueue_epoch) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 390 | { |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 391 | s->enqueue_epoch = enqueue_epoch; |
| 392 | vec_add1 (smm->session_to_enqueue[tc->proto][thread_index], |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 393 | s - smm->sessions[thread_index]); |
| 394 | } |
| 395 | } |
| 396 | |
Chris Luke | b2bcad6 | 2017-09-18 08:51:22 -0400 | [diff] [blame] | 397 | return enqueued; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 398 | } |
| 399 | |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 400 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 401 | int |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 402 | session_enqueue_dgram_connection (stream_session_t * s, |
| 403 | session_dgram_hdr_t * hdr, |
| 404 | vlib_buffer_t * b, u8 proto, u8 queue_event) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 405 | { |
| 406 | int enqueued = 0, rv, in_order_off; |
| 407 | |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 408 | ASSERT (svm_fifo_max_enqueue (s->server_rx_fifo) |
| 409 | >= b->current_length + sizeof (*hdr)); |
| 410 | |
| 411 | svm_fifo_enqueue_nowait (s->server_rx_fifo, sizeof (session_dgram_hdr_t), |
| 412 | (u8 *) hdr); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 413 | enqueued = svm_fifo_enqueue_nowait (s->server_rx_fifo, b->current_length, |
| 414 | vlib_buffer_get_current (b)); |
| 415 | if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) && enqueued >= 0)) |
| 416 | { |
| 417 | in_order_off = enqueued > b->current_length ? enqueued : 0; |
| 418 | rv = session_enqueue_chain_tail (s, b, in_order_off, 1); |
| 419 | if (rv > 0) |
| 420 | enqueued += rv; |
| 421 | } |
| 422 | if (queue_event) |
| 423 | { |
| 424 | /* Queue RX event on this fifo. Eventually these will need to be flushed |
| 425 | * by calling stream_server_flush_enqueue_events () */ |
| 426 | session_manager_main_t *smm = vnet_get_session_manager_main (); |
| 427 | u32 thread_index = s->thread_index; |
| 428 | u32 enqueue_epoch = smm->current_enqueue_epoch[proto][thread_index]; |
| 429 | |
| 430 | if (s->enqueue_epoch != enqueue_epoch) |
| 431 | { |
| 432 | s->enqueue_epoch = enqueue_epoch; |
| 433 | vec_add1 (smm->session_to_enqueue[proto][thread_index], |
| 434 | s - smm->sessions[thread_index]); |
| 435 | } |
| 436 | } |
| 437 | return enqueued; |
| 438 | } |
| 439 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 440 | /** Check if we have space in rx fifo to push more bytes */ |
| 441 | u8 |
| 442 | stream_session_no_space (transport_connection_t * tc, u32 thread_index, |
| 443 | u16 data_len) |
| 444 | { |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 445 | stream_session_t *s = session_get (tc->s_index, thread_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 446 | |
| 447 | if (PREDICT_FALSE (s->session_state != SESSION_STATE_READY)) |
| 448 | return 1; |
| 449 | |
| 450 | if (data_len > svm_fifo_max_enqueue (s->server_rx_fifo)) |
| 451 | return 1; |
| 452 | |
| 453 | return 0; |
| 454 | } |
| 455 | |
| 456 | u32 |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 457 | session_tx_fifo_max_dequeue (transport_connection_t * tc) |
Florin Coras | 93992a9 | 2017-05-24 18:03:56 -0700 | [diff] [blame] | 458 | { |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 459 | stream_session_t *s = session_get (tc->s_index, tc->thread_index); |
Florin Coras | b2215d6 | 2017-08-01 16:56:58 -0700 | [diff] [blame] | 460 | if (!s->server_tx_fifo) |
Florin Coras | 93992a9 | 2017-05-24 18:03:56 -0700 | [diff] [blame] | 461 | return 0; |
| 462 | return svm_fifo_max_dequeue (s->server_tx_fifo); |
| 463 | } |
| 464 | |
| 465 | int |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 466 | stream_session_peek_bytes (transport_connection_t * tc, u8 * buffer, |
| 467 | u32 offset, u32 max_bytes) |
| 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); |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 470 | return svm_fifo_peek (s->server_tx_fifo, offset, max_bytes, buffer); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 471 | } |
| 472 | |
| 473 | u32 |
| 474 | stream_session_dequeue_drop (transport_connection_t * tc, u32 max_bytes) |
| 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 | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 477 | return svm_fifo_dequeue_drop (s->server_tx_fifo, max_bytes); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 478 | } |
| 479 | |
| 480 | /** |
| 481 | * Notify session peer that new data has been enqueued. |
| 482 | * |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 483 | * @param s Stream session for which the event is to be generated. |
| 484 | * @param lock Flag to indicate if call should lock message queue. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 485 | * |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 486 | * @return 0 on success or negative number if failed to send notification. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 487 | */ |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 488 | static inline int |
| 489 | session_enqueue_notify (stream_session_t * s, u8 lock) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 490 | { |
| 491 | application_t *app; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 492 | |
Dave Barach | 818eb54 | 2017-08-02 13:56:13 -0400 | [diff] [blame] | 493 | app = application_get_if_valid (s->app_index); |
Dave Barach | 818eb54 | 2017-08-02 13:56:13 -0400 | [diff] [blame] | 494 | if (PREDICT_FALSE (app == 0)) |
| 495 | { |
| 496 | clib_warning ("invalid s->app_index = %d", s->app_index); |
| 497 | return 0; |
| 498 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 499 | |
Florin Coras | e69f495 | 2017-03-07 10:06:24 -0800 | [diff] [blame] | 500 | /* *INDENT-OFF* */ |
Florin Coras | 6792ec0 | 2017-03-13 03:49:51 -0700 | [diff] [blame] | 501 | SESSION_EVT_DBG(SESSION_EVT_ENQ, s, ({ |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 502 | ed->data[0] = FIFO_EVENT_APP_RX; |
Florin Coras | 6792ec0 | 2017-03-13 03:49:51 -0700 | [diff] [blame] | 503 | ed->data[1] = svm_fifo_max_dequeue (s->server_rx_fifo); |
Florin Coras | e69f495 | 2017-03-07 10:06:24 -0800 | [diff] [blame] | 504 | })); |
| 505 | /* *INDENT-ON* */ |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 506 | |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 507 | if (lock) |
| 508 | return application_lock_and_send_event (app, s, FIFO_EVENT_APP_RX); |
| 509 | |
| 510 | return application_send_event (app, s, FIFO_EVENT_APP_RX); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 511 | } |
| 512 | |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 513 | int |
| 514 | session_dequeue_notify (stream_session_t * s) |
| 515 | { |
| 516 | application_t *app; |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 517 | |
Florin Coras | 208daa1 | 2018-07-02 01:30:51 -0700 | [diff] [blame] | 518 | app = application_get_if_valid (s->app_index); |
| 519 | if (PREDICT_FALSE (!app)) |
| 520 | return -1; |
| 521 | |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 522 | if (session_transport_service_type (s) == TRANSPORT_SERVICE_CL) |
| 523 | return application_lock_and_send_event (app, s, FIFO_EVENT_APP_RX); |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 524 | |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 525 | return application_send_event (app, s, FIFO_EVENT_APP_TX); |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 526 | } |
| 527 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 528 | /** |
| 529 | * Flushes queue of sessions that are to be notified of new data |
| 530 | * enqueued events. |
| 531 | * |
| 532 | * @param thread_index Thread index for which the flush is to be performed. |
| 533 | * @return 0 on success or a positive number indicating the number of |
| 534 | * failures due to API queue being full. |
| 535 | */ |
| 536 | int |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 537 | session_manager_flush_enqueue_events (u8 transport_proto, u32 thread_index) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 538 | { |
| 539 | session_manager_main_t *smm = &session_manager_main; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 540 | transport_service_type_t tp_service; |
| 541 | int i, errors = 0, lock; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 542 | stream_session_t *s; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 543 | u32 *indices; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 544 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 545 | indices = smm->session_to_enqueue[transport_proto][thread_index]; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 546 | tp_service = transport_protocol_service_type (transport_proto); |
| 547 | lock = tp_service == TRANSPORT_SERVICE_CL; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 548 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 549 | for (i = 0; i < vec_len (indices); i++) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 550 | { |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 551 | s = session_get_if_valid (indices[i], thread_index); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 552 | if (PREDICT_FALSE (!s)) |
| 553 | { |
| 554 | errors++; |
| 555 | continue; |
| 556 | } |
| 557 | if (PREDICT_FALSE (session_enqueue_notify (s, lock))) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 558 | errors++; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 559 | } |
| 560 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 561 | vec_reset_length (indices); |
| 562 | smm->session_to_enqueue[transport_proto][thread_index] = indices; |
| 563 | smm->current_enqueue_epoch[transport_proto][thread_index]++; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 564 | |
| 565 | return errors; |
| 566 | } |
| 567 | |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 568 | int |
| 569 | session_manager_flush_all_enqueue_events (u8 transport_proto) |
| 570 | { |
| 571 | vlib_thread_main_t *vtm = vlib_get_thread_main (); |
| 572 | int i, errors = 0; |
| 573 | for (i = 0; i < 1 + vtm->n_threads; i++) |
| 574 | errors += session_manager_flush_enqueue_events (transport_proto, i); |
| 575 | return errors; |
| 576 | } |
| 577 | |
Florin Coras | c28764f | 2017-04-26 00:08:42 -0700 | [diff] [blame] | 578 | /** |
| 579 | * Init fifo tail and head pointers |
| 580 | * |
| 581 | * Useful if transport uses absolute offsets for tracking ooo segments. |
| 582 | */ |
| 583 | void |
| 584 | stream_session_init_fifos_pointers (transport_connection_t * tc, |
| 585 | u32 rx_pointer, u32 tx_pointer) |
| 586 | { |
| 587 | stream_session_t *s; |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 588 | s = session_get (tc->s_index, tc->thread_index); |
Florin Coras | c28764f | 2017-04-26 00:08:42 -0700 | [diff] [blame] | 589 | svm_fifo_init_pointers (s->server_rx_fifo, rx_pointer); |
| 590 | svm_fifo_init_pointers (s->server_tx_fifo, tx_pointer); |
| 591 | } |
| 592 | |
Florin Coras | f03a59a | 2017-06-09 21:07:32 -0700 | [diff] [blame] | 593 | int |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 594 | session_stream_connect_notify (transport_connection_t * tc, u8 is_fail) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 595 | { |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 596 | u32 opaque = 0, new_ti, new_si; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 597 | stream_session_t *new_s = 0; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 598 | segment_manager_t *sm; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 599 | application_t *app; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 600 | u8 alloc_fifos; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 601 | int error = 0; |
| 602 | u64 handle; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 603 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 604 | /* |
| 605 | * Find connection handle and cleanup half-open table |
| 606 | */ |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 607 | handle = session_lookup_half_open_handle (tc); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 608 | if (handle == HALF_OPEN_LOOKUP_INVALID_VALUE) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 609 | { |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 610 | SESSION_DBG ("half-open was removed!"); |
Florin Coras | f03a59a | 2017-06-09 21:07:32 -0700 | [diff] [blame] | 611 | return -1; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 612 | } |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 613 | session_lookup_del_half_open (tc); |
Florin Coras | 4eeeaaf | 2017-09-05 14:03:37 -0400 | [diff] [blame] | 614 | |
Florin Coras | ab0289a | 2017-08-14 11:25:25 -0700 | [diff] [blame] | 615 | /* Get the app's index from the handle we stored when opening connection |
| 616 | * and the opaque (api_context for external apps) from transport session |
Florin Coras | 4eeeaaf | 2017-09-05 14:03:37 -0400 | [diff] [blame] | 617 | * index */ |
Florin Coras | c87c91d | 2017-08-16 19:55:49 -0700 | [diff] [blame] | 618 | app = application_get_if_valid (handle >> 32); |
| 619 | if (!app) |
| 620 | return -1; |
Florin Coras | ab0289a | 2017-08-14 11:25:25 -0700 | [diff] [blame] | 621 | opaque = tc->s_index; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 622 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 623 | /* |
| 624 | * Allocate new session with fifos (svm segments are allocated if needed) |
| 625 | */ |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 626 | if (!is_fail) |
| 627 | { |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 628 | sm = application_get_connect_segment_manager (app); |
Florin Coras | 7999e83 | 2017-10-31 01:51:04 -0700 | [diff] [blame] | 629 | alloc_fifos = !application_is_builtin_proxy (app); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 630 | if (session_alloc_and_init (sm, tc, alloc_fifos, &new_s)) |
Florin Coras | f03a59a | 2017-06-09 21:07:32 -0700 | [diff] [blame] | 631 | { |
| 632 | is_fail = 1; |
| 633 | error = -1; |
| 634 | } |
| 635 | else |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 636 | { |
| 637 | new_s->app_index = app->index; |
| 638 | new_si = new_s->session_index; |
| 639 | new_ti = new_s->thread_index; |
| 640 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 641 | } |
| 642 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 643 | /* |
| 644 | * Notify client application |
| 645 | */ |
Florin Coras | ab0289a | 2017-08-14 11:25:25 -0700 | [diff] [blame] | 646 | if (app->cb_fns.session_connected_callback (app->index, opaque, new_s, |
Florin Coras | 6534b7a | 2017-07-18 05:38:03 -0400 | [diff] [blame] | 647 | is_fail)) |
| 648 | { |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 649 | SESSION_DBG ("failed to notify app"); |
Florin Coras | 6534b7a | 2017-07-18 05:38:03 -0400 | [diff] [blame] | 650 | if (!is_fail) |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 651 | { |
| 652 | new_s = session_get (new_si, new_ti); |
| 653 | stream_session_disconnect_transport (new_s); |
| 654 | } |
Florin Coras | 6534b7a | 2017-07-18 05:38:03 -0400 | [diff] [blame] | 655 | } |
| 656 | else |
| 657 | { |
| 658 | if (!is_fail) |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 659 | { |
| 660 | new_s = session_get (new_si, new_ti); |
| 661 | new_s->session_state = SESSION_STATE_READY; |
| 662 | } |
Florin Coras | 6534b7a | 2017-07-18 05:38:03 -0400 | [diff] [blame] | 663 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 664 | |
Florin Coras | f03a59a | 2017-06-09 21:07:32 -0700 | [diff] [blame] | 665 | return error; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 666 | } |
| 667 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 668 | typedef struct _session_switch_pool_args |
| 669 | { |
| 670 | u32 session_index; |
| 671 | u32 thread_index; |
| 672 | u32 new_thread_index; |
| 673 | u32 new_session_index; |
| 674 | } session_switch_pool_args_t; |
| 675 | |
| 676 | static void |
| 677 | session_switch_pool (void *cb_args) |
| 678 | { |
| 679 | session_switch_pool_args_t *args = (session_switch_pool_args_t *) cb_args; |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 680 | transport_proto_t tp; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 681 | stream_session_t *s; |
| 682 | ASSERT (args->thread_index == vlib_get_thread_index ()); |
| 683 | s = session_get (args->session_index, args->thread_index); |
| 684 | s->server_tx_fifo->master_session_index = args->new_session_index; |
| 685 | s->server_tx_fifo->master_thread_index = args->new_thread_index; |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 686 | tp = session_get_transport_proto (s); |
| 687 | tp_vfts[tp].cleanup (s->connection_index, s->thread_index); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 688 | session_free (s); |
| 689 | clib_mem_free (cb_args); |
| 690 | } |
| 691 | |
| 692 | /** |
| 693 | * Move dgram session to the right thread |
| 694 | */ |
| 695 | int |
| 696 | session_dgram_connect_notify (transport_connection_t * tc, |
| 697 | u32 old_thread_index, |
| 698 | stream_session_t ** new_session) |
| 699 | { |
| 700 | stream_session_t *new_s; |
| 701 | session_switch_pool_args_t *rpc_args; |
| 702 | |
| 703 | /* |
| 704 | * Clone half-open session to the right thread. |
| 705 | */ |
| 706 | new_s = session_clone_safe (tc->s_index, old_thread_index); |
| 707 | new_s->connection_index = tc->c_index; |
| 708 | new_s->server_rx_fifo->master_session_index = new_s->session_index; |
| 709 | new_s->server_rx_fifo->master_thread_index = new_s->thread_index; |
| 710 | new_s->session_state = SESSION_STATE_READY; |
| 711 | session_lookup_add_connection (tc, session_handle (new_s)); |
| 712 | |
| 713 | /* |
| 714 | * Ask thread owning the old session to clean it up and make us the tx |
| 715 | * fifo owner |
| 716 | */ |
| 717 | rpc_args = clib_mem_alloc (sizeof (*rpc_args)); |
| 718 | rpc_args->new_session_index = new_s->session_index; |
| 719 | rpc_args->new_thread_index = new_s->thread_index; |
| 720 | rpc_args->session_index = tc->s_index; |
| 721 | rpc_args->thread_index = old_thread_index; |
| 722 | session_send_rpc_evt_to_thread (rpc_args->thread_index, session_switch_pool, |
| 723 | rpc_args); |
| 724 | |
| 725 | tc->s_index = new_s->session_index; |
| 726 | new_s->connection_index = tc->c_index; |
| 727 | *new_session = new_s; |
| 728 | return 0; |
| 729 | } |
| 730 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 731 | void |
| 732 | stream_session_accept_notify (transport_connection_t * tc) |
| 733 | { |
| 734 | application_t *server; |
| 735 | stream_session_t *s; |
| 736 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 737 | s = session_get (tc->s_index, tc->thread_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 738 | server = application_get (s->app_index); |
| 739 | server->cb_fns.session_accept_callback (s); |
| 740 | } |
| 741 | |
| 742 | /** |
| 743 | * Notification from transport that connection is being closed. |
| 744 | * |
| 745 | * A disconnect is sent to application but state is not removed. Once |
| 746 | * disconnect is acknowledged by application, session disconnect is called. |
| 747 | * Ultimately this leads to close being called on transport (passive close). |
| 748 | */ |
| 749 | void |
| 750 | stream_session_disconnect_notify (transport_connection_t * tc) |
| 751 | { |
| 752 | application_t *server; |
| 753 | stream_session_t *s; |
| 754 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 755 | s = session_get (tc->s_index, tc->thread_index); |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 756 | s->session_state = SESSION_STATE_CLOSING; |
Florin Coras | 54693d2 | 2018-07-17 10:46:29 -0700 | [diff] [blame] | 757 | server = application_get_if_valid (s->app_index); |
| 758 | if (server) |
| 759 | server->cb_fns.session_disconnect_callback (s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 760 | } |
| 761 | |
| 762 | /** |
Florin Coras | 4eeeaaf | 2017-09-05 14:03:37 -0400 | [diff] [blame] | 763 | * Cleans up session and lookup table. |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 764 | * |
| 765 | * Transport connection must still be valid. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 766 | */ |
| 767 | void |
| 768 | stream_session_delete (stream_session_t * s) |
| 769 | { |
Florin Coras | 6534b7a | 2017-07-18 05:38:03 -0400 | [diff] [blame] | 770 | int rv; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 771 | |
Florin Coras | d79b41e | 2017-03-04 05:37:52 -0800 | [diff] [blame] | 772 | /* Delete from the main lookup table. */ |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 773 | if ((rv = session_lookup_del_session (s))) |
Florin Coras | 6534b7a | 2017-07-18 05:38:03 -0400 | [diff] [blame] | 774 | clib_warning ("hash delete error, rv %d", rv); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 775 | |
| 776 | /* Cleanup fifo segments */ |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 777 | segment_manager_dealloc_fifos (s->svm_segment_index, s->server_rx_fifo, |
| 778 | s->server_tx_fifo); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 779 | session_free (s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 780 | } |
| 781 | |
| 782 | /** |
| 783 | * Notification from transport that connection is being deleted |
| 784 | * |
Florin Coras | 4eeeaaf | 2017-09-05 14:03:37 -0400 | [diff] [blame] | 785 | * This removes the session if it is still valid. It should be called only on |
| 786 | * previously fully established sessions. For instance failed connects should |
| 787 | * call stream_session_connect_notify and indicate that the connect has |
| 788 | * failed. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 789 | */ |
| 790 | void |
| 791 | stream_session_delete_notify (transport_connection_t * tc) |
| 792 | { |
| 793 | stream_session_t *s; |
| 794 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 795 | /* App might've been removed already */ |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 796 | s = session_get_if_valid (tc->s_index, tc->thread_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 797 | if (!s) |
Florin Coras | c87c91d | 2017-08-16 19:55:49 -0700 | [diff] [blame] | 798 | return; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 799 | stream_session_delete (s); |
| 800 | } |
| 801 | |
| 802 | /** |
| 803 | * Notify application that connection has been reset. |
| 804 | */ |
| 805 | void |
| 806 | stream_session_reset_notify (transport_connection_t * tc) |
| 807 | { |
| 808 | stream_session_t *s; |
| 809 | application_t *app; |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 810 | s = session_get (tc->s_index, tc->thread_index); |
Florin Coras | ca1c8f3 | 2018-05-23 21:01:30 -0700 | [diff] [blame] | 811 | s->session_state = SESSION_STATE_CLOSED; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 812 | app = application_get (s->app_index); |
| 813 | app->cb_fns.session_reset_callback (s); |
| 814 | } |
| 815 | |
| 816 | /** |
| 817 | * Accept a stream session. Optionally ping the server by callback. |
| 818 | */ |
| 819 | int |
| 820 | stream_session_accept (transport_connection_t * tc, u32 listener_index, |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 821 | u8 notify) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 822 | { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 823 | application_t *server; |
| 824 | stream_session_t *s, *listener; |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 825 | segment_manager_t *sm; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 826 | int rv; |
| 827 | |
| 828 | /* Find the server */ |
Florin Coras | 5c9083d | 2018-04-13 06:39:07 -0700 | [diff] [blame] | 829 | listener = listen_session_get (listener_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 830 | server = application_get (listener->app_index); |
| 831 | |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 832 | sm = application_get_listen_segment_manager (server, listener); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 833 | if ((rv = session_alloc_and_init (sm, tc, 1, &s))) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 834 | return rv; |
| 835 | |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 836 | s->app_index = server->index; |
| 837 | s->listener_index = listener_index; |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 838 | s->session_state = SESSION_STATE_ACCEPTING; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 839 | |
| 840 | /* Shoulder-tap the server */ |
| 841 | if (notify) |
| 842 | { |
| 843 | server->cb_fns.session_accept_callback (s); |
| 844 | } |
| 845 | |
| 846 | return 0; |
| 847 | } |
| 848 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 849 | int |
| 850 | session_open_cl (u32 app_index, session_endpoint_t * rmt, u32 opaque) |
| 851 | { |
| 852 | transport_connection_t *tc; |
| 853 | transport_endpoint_t *tep; |
| 854 | segment_manager_t *sm; |
| 855 | stream_session_t *s; |
| 856 | application_t *app; |
| 857 | int rv; |
| 858 | |
| 859 | tep = session_endpoint_to_transport (rmt); |
| 860 | rv = tp_vfts[rmt->transport_proto].open (tep); |
| 861 | if (rv < 0) |
| 862 | { |
| 863 | SESSION_DBG ("Transport failed to open connection."); |
| 864 | return VNET_API_ERROR_SESSION_CONNECT; |
| 865 | } |
| 866 | |
| 867 | tc = tp_vfts[rmt->transport_proto].get_half_open ((u32) rv); |
| 868 | |
| 869 | /* For dgram type of service, allocate session and fifos now. |
| 870 | */ |
| 871 | app = application_get (app_index); |
| 872 | sm = application_get_connect_segment_manager (app); |
| 873 | |
| 874 | if (session_alloc_and_init (sm, tc, 1, &s)) |
| 875 | return -1; |
| 876 | s->app_index = app->index; |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 877 | s->session_state = SESSION_STATE_OPENED; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 878 | |
| 879 | /* Tell the app about the new event fifo for this session */ |
| 880 | app->cb_fns.session_connected_callback (app->index, opaque, s, 0); |
| 881 | |
| 882 | return 0; |
| 883 | } |
| 884 | |
| 885 | int |
| 886 | session_open_vc (u32 app_index, session_endpoint_t * rmt, u32 opaque) |
| 887 | { |
| 888 | transport_connection_t *tc; |
| 889 | transport_endpoint_t *tep; |
| 890 | u64 handle; |
| 891 | int rv; |
| 892 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 893 | tep = session_endpoint_to_transport (rmt); |
| 894 | rv = tp_vfts[rmt->transport_proto].open (tep); |
| 895 | if (rv < 0) |
| 896 | { |
| 897 | SESSION_DBG ("Transport failed to open connection."); |
| 898 | return VNET_API_ERROR_SESSION_CONNECT; |
| 899 | } |
| 900 | |
| 901 | tc = tp_vfts[rmt->transport_proto].get_half_open ((u32) rv); |
| 902 | |
| 903 | /* If transport offers a stream service, only allocate session once the |
| 904 | * connection has been established. |
| 905 | * Add connection to half-open table and save app and tc index. The |
| 906 | * latter is needed to help establish the connection while the former |
| 907 | * is needed when the connect notify comes and we have to notify the |
| 908 | * external app |
| 909 | */ |
| 910 | handle = (((u64) app_index) << 32) | (u64) tc->c_index; |
| 911 | session_lookup_add_half_open (tc, handle); |
| 912 | |
| 913 | /* Store api_context (opaque) for when the reply comes. Not the nicest |
| 914 | * thing but better than allocating a separate half-open pool. |
| 915 | */ |
| 916 | tc->s_index = opaque; |
| 917 | return 0; |
| 918 | } |
| 919 | |
| 920 | int |
| 921 | session_open_app (u32 app_index, session_endpoint_t * rmt, u32 opaque) |
| 922 | { |
Florin Coras | 8f89dd0 | 2018-03-05 16:53:07 -0800 | [diff] [blame] | 923 | session_endpoint_extended_t *sep = (session_endpoint_extended_t *) rmt; |
| 924 | sep->app_index = app_index; |
| 925 | sep->opaque = opaque; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 926 | |
Florin Coras | 8f89dd0 | 2018-03-05 16:53:07 -0800 | [diff] [blame] | 927 | return tp_vfts[rmt->transport_proto].open ((transport_endpoint_t *) sep); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 928 | } |
| 929 | |
| 930 | typedef int (*session_open_service_fn) (u32, session_endpoint_t *, u32); |
| 931 | |
| 932 | /* *INDENT-OFF* */ |
| 933 | static session_open_service_fn session_open_srv_fns[TRANSPORT_N_SERVICES] = { |
| 934 | session_open_vc, |
| 935 | session_open_cl, |
| 936 | session_open_app, |
| 937 | }; |
| 938 | /* *INDENT-ON* */ |
| 939 | |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 940 | /** |
| 941 | * Ask transport to open connection to remote transport endpoint. |
| 942 | * |
| 943 | * Stores handle for matching request with reply since the call can be |
| 944 | * asynchronous. For instance, for TCP the 3-way handshake must complete |
| 945 | * before reply comes. Session is only created once connection is established. |
| 946 | * |
| 947 | * @param app_index Index of the application requesting the connect |
| 948 | * @param st Session type requested. |
| 949 | * @param tep Remote transport endpoint |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 950 | * @param opaque Opaque data (typically, api_context) the application expects |
| 951 | * on open completion. |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 952 | */ |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 953 | int |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 954 | session_open (u32 app_index, session_endpoint_t * rmt, u32 opaque) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 955 | { |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 956 | transport_service_type_t tst = tp_vfts[rmt->transport_proto].service_type; |
| 957 | return session_open_srv_fns[tst] (app_index, rmt, opaque); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 958 | } |
| 959 | |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 960 | int |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 961 | session_listen_vc (stream_session_t * s, session_endpoint_t * sep) |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 962 | { |
| 963 | transport_connection_t *tc; |
| 964 | u32 tci; |
| 965 | |
| 966 | /* Transport bind/listen */ |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 967 | tci = tp_vfts[sep->transport_proto].bind (s->session_index, |
| 968 | session_endpoint_to_transport |
| 969 | (sep)); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 970 | |
| 971 | if (tci == (u32) ~ 0) |
| 972 | return -1; |
| 973 | |
| 974 | /* Attach transport to session */ |
| 975 | s->connection_index = tci; |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 976 | tc = tp_vfts[sep->transport_proto].get_listener (tci); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 977 | |
| 978 | /* Weird but handle it ... */ |
| 979 | if (tc == 0) |
| 980 | return -1; |
| 981 | |
| 982 | /* Add to the main lookup table */ |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 983 | session_lookup_add_connection (tc, s->session_index); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 984 | return 0; |
| 985 | } |
| 986 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 987 | int |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 988 | session_listen_cl (stream_session_t * s, session_endpoint_t * sep) |
| 989 | { |
| 990 | transport_connection_t *tc; |
| 991 | application_t *server; |
| 992 | segment_manager_t *sm; |
| 993 | u32 tci; |
| 994 | |
| 995 | /* Transport bind/listen */ |
| 996 | tci = tp_vfts[sep->transport_proto].bind (s->session_index, |
| 997 | session_endpoint_to_transport |
| 998 | (sep)); |
| 999 | |
| 1000 | if (tci == (u32) ~ 0) |
| 1001 | return -1; |
| 1002 | |
| 1003 | /* Attach transport to session */ |
| 1004 | s->connection_index = tci; |
| 1005 | tc = tp_vfts[sep->transport_proto].get_listener (tci); |
| 1006 | |
| 1007 | /* Weird but handle it ... */ |
| 1008 | if (tc == 0) |
| 1009 | return -1; |
| 1010 | |
| 1011 | server = application_get (s->app_index); |
| 1012 | sm = application_get_listen_segment_manager (server, s); |
| 1013 | if (session_alloc_fifos (sm, s)) |
| 1014 | return -1; |
| 1015 | |
| 1016 | /* Add to the main lookup table */ |
| 1017 | session_lookup_add_connection (tc, s->session_index); |
| 1018 | return 0; |
| 1019 | } |
| 1020 | |
| 1021 | int |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1022 | session_listen_app (stream_session_t * s, session_endpoint_t * sep) |
| 1023 | { |
| 1024 | session_endpoint_extended_t esep; |
| 1025 | clib_memcpy (&esep, sep, sizeof (*sep)); |
| 1026 | esep.app_index = s->app_index; |
| 1027 | |
| 1028 | return tp_vfts[sep->transport_proto].bind (s->session_index, |
| 1029 | (transport_endpoint_t *) & esep); |
| 1030 | } |
| 1031 | |
| 1032 | typedef int (*session_listen_service_fn) (stream_session_t *, |
| 1033 | session_endpoint_t *); |
| 1034 | |
| 1035 | /* *INDENT-OFF* */ |
| 1036 | static session_listen_service_fn |
| 1037 | session_listen_srv_fns[TRANSPORT_N_SERVICES] = { |
| 1038 | session_listen_vc, |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1039 | session_listen_cl, |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1040 | session_listen_app, |
| 1041 | }; |
| 1042 | /* *INDENT-ON* */ |
| 1043 | |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1044 | /** |
| 1045 | * Ask transport to listen on local transport endpoint. |
| 1046 | * |
| 1047 | * @param s Session for which listen will be called. Note that unlike |
| 1048 | * established sessions, listen sessions are not associated to a |
| 1049 | * thread. |
| 1050 | * @param tep Local endpoint to be listened on. |
| 1051 | */ |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1052 | int |
| 1053 | stream_session_listen (stream_session_t * s, session_endpoint_t * sep) |
| 1054 | { |
| 1055 | transport_service_type_t tst = tp_vfts[sep->transport_proto].service_type; |
| 1056 | return session_listen_srv_fns[tst] (s, sep); |
| 1057 | } |
| 1058 | |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1059 | /** |
| 1060 | * Ask transport to stop listening on local transport endpoint. |
| 1061 | * |
| 1062 | * @param s Session to stop listening on. It must be in state LISTENING. |
| 1063 | */ |
| 1064 | int |
| 1065 | stream_session_stop_listen (stream_session_t * s) |
| 1066 | { |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1067 | transport_proto_t tp = session_get_transport_proto (s); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1068 | transport_connection_t *tc; |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1069 | if (s->session_state != SESSION_STATE_LISTENING) |
| 1070 | { |
| 1071 | clib_warning ("not a listening session"); |
| 1072 | return -1; |
| 1073 | } |
| 1074 | |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1075 | tc = tp_vfts[tp].get_listener (s->connection_index); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1076 | if (!tc) |
| 1077 | { |
| 1078 | clib_warning ("no transport"); |
| 1079 | return VNET_API_ERROR_ADDRESS_NOT_IN_USE; |
| 1080 | } |
| 1081 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1082 | session_lookup_del_connection (tc); |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1083 | tp_vfts[tp].unbind (s->connection_index); |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1084 | return 0; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1085 | } |
| 1086 | |
| 1087 | /** |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 1088 | * Initialize session disconnect. |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1089 | * |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 1090 | * Request is always sent to session node to ensure that all outstanding |
| 1091 | * requests are served before transport is notified. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1092 | */ |
| 1093 | void |
| 1094 | stream_session_disconnect (stream_session_t * s) |
| 1095 | { |
Florin Coras | b2371c2 | 2018-05-31 17:14:10 -0700 | [diff] [blame] | 1096 | u32 thread_index = vlib_get_thread_index (); |
| 1097 | session_manager_main_t *smm = &session_manager_main; |
Florin Coras | 52207f1 | 2018-07-12 14:48:06 -0700 | [diff] [blame] | 1098 | session_event_t *evt; |
Florin Coras | b2371c2 | 2018-05-31 17:14:10 -0700 | [diff] [blame] | 1099 | |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1100 | if (!s) |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 1101 | return; |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1102 | |
| 1103 | if (s->session_state >= SESSION_STATE_CLOSING) |
| 1104 | { |
| 1105 | /* Session already closed. Clear the tx fifo */ |
| 1106 | if (s->session_state == SESSION_STATE_CLOSED) |
| 1107 | svm_fifo_dequeue_drop_all (s->server_tx_fifo); |
| 1108 | return; |
| 1109 | } |
| 1110 | |
Florin Coras | b2371c2 | 2018-05-31 17:14:10 -0700 | [diff] [blame] | 1111 | s->session_state = SESSION_STATE_CLOSING; |
| 1112 | |
| 1113 | /* If we are in the handler thread, or being called with the worker barrier |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1114 | * held (api/cli), just append a new event to pending disconnects vector. */ |
| 1115 | if ((thread_index == 0 && !vlib_get_current_process (vlib_get_main ())) |
| 1116 | || thread_index == s->thread_index) |
Florin Coras | b2371c2 | 2018-05-31 17:14:10 -0700 | [diff] [blame] | 1117 | { |
| 1118 | ASSERT (s->thread_index == thread_index || thread_index == 0); |
| 1119 | vec_add2 (smm->pending_disconnects[s->thread_index], evt, 1); |
| 1120 | memset (evt, 0, sizeof (*evt)); |
| 1121 | evt->session_handle = session_handle (s); |
| 1122 | evt->event_type = FIFO_EVENT_DISCONNECT; |
| 1123 | } |
| 1124 | else |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 1125 | session_send_ctrl_evt_to_thread (s, FIFO_EVENT_DISCONNECT); |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 1126 | } |
| 1127 | |
| 1128 | /** |
| 1129 | * Notify transport the session can be disconnected. This should eventually |
| 1130 | * result in a delete notification that allows us to cleanup session state. |
| 1131 | * Called for both active/passive disconnects. |
| 1132 | * |
| 1133 | * Must be called from the session's thread. |
| 1134 | */ |
| 1135 | void |
| 1136 | stream_session_disconnect_transport (stream_session_t * s) |
| 1137 | { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1138 | s->session_state = SESSION_STATE_CLOSED; |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1139 | tp_vfts[session_get_transport_proto (s)].close (s->connection_index, |
| 1140 | s->thread_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1141 | } |
| 1142 | |
| 1143 | /** |
| 1144 | * Cleanup transport and session state. |
Florin Coras | d79b41e | 2017-03-04 05:37:52 -0800 | [diff] [blame] | 1145 | * |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1146 | * Notify transport of the cleanup and free the session. This should |
| 1147 | * be called only if transport reported some error and is already |
| 1148 | * closed. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1149 | */ |
| 1150 | void |
| 1151 | stream_session_cleanup (stream_session_t * s) |
| 1152 | { |
Florin Coras | d79b41e | 2017-03-04 05:37:52 -0800 | [diff] [blame] | 1153 | s->session_state = SESSION_STATE_CLOSED; |
| 1154 | |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1155 | /* Delete from main lookup table before we axe the the transport */ |
| 1156 | session_lookup_del_session (s); |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1157 | tp_vfts[session_get_transport_proto (s)].cleanup (s->connection_index, |
| 1158 | s->thread_index); |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1159 | /* Since we called cleanup, no delete notification will come. So, make |
| 1160 | * sure the session is properly freed. */ |
| 1161 | segment_manager_dealloc_fifos (s->svm_segment_index, s->server_rx_fifo, |
| 1162 | s->server_tx_fifo); |
| 1163 | session_free (s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1164 | } |
| 1165 | |
Florin Coras | f08f26d | 2018-05-10 13:20:47 -0700 | [diff] [blame] | 1166 | transport_service_type_t |
| 1167 | session_transport_service_type (stream_session_t * s) |
| 1168 | { |
| 1169 | transport_proto_t tp; |
| 1170 | tp = session_get_transport_proto (s); |
| 1171 | return transport_protocol_service_type (tp); |
| 1172 | } |
| 1173 | |
| 1174 | transport_tx_fn_type_t |
| 1175 | session_transport_tx_fn_type (stream_session_t * s) |
| 1176 | { |
| 1177 | transport_proto_t tp; |
| 1178 | tp = session_get_transport_proto (s); |
| 1179 | return transport_protocol_tx_fn_type (tp); |
| 1180 | } |
| 1181 | |
| 1182 | u8 |
| 1183 | session_tx_is_dgram (stream_session_t * s) |
| 1184 | { |
| 1185 | return (session_transport_tx_fn_type (s) == TRANSPORT_TX_DGRAM); |
| 1186 | } |
| 1187 | |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1188 | /** |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1189 | * Allocate event queues in the shared-memory segment |
| 1190 | * |
| 1191 | * That can either be a newly created memfd segment, that will need to be |
| 1192 | * mapped by all stack users, or the binary api's svm region. The latter is |
| 1193 | * assumed to be already mapped. NOTE that this assumption DOES NOT hold if |
| 1194 | * api clients bootstrap shm api over sockets (i.e. use memfd segments) and |
| 1195 | * vpp uses api svm region for event queues. |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1196 | */ |
| 1197 | void |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1198 | session_vpp_event_queues_allocate (session_manager_main_t * smm) |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1199 | { |
Florin Coras | 52207f1 | 2018-07-12 14:48:06 -0700 | [diff] [blame] | 1200 | u32 evt_q_length = 2048, evt_size = sizeof (session_event_t); |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1201 | ssvm_private_t *eqs = &smm->evt_qs_segment; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1202 | api_main_t *am = &api_main; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1203 | u64 eqs_size = 64 << 20; |
| 1204 | pid_t vpp_pid = getpid (); |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1205 | void *oldheap; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1206 | int i; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1207 | |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1208 | if (smm->configured_event_queue_length) |
| 1209 | evt_q_length = smm->configured_event_queue_length; |
| 1210 | |
| 1211 | if (smm->evt_qs_use_memfd_seg) |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1212 | { |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1213 | if (smm->evt_qs_segment_size) |
| 1214 | eqs_size = smm->evt_qs_segment_size; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1215 | |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1216 | eqs->ssvm_size = eqs_size; |
| 1217 | eqs->i_am_master = 1; |
| 1218 | eqs->my_pid = vpp_pid; |
| 1219 | eqs->name = format (0, "%s%c", "evt-qs-segment", 0); |
| 1220 | eqs->requested_va = smm->session_baseva; |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1221 | |
Florin Coras | 95e0ce0 | 2018-07-05 23:44:23 -0700 | [diff] [blame] | 1222 | if (ssvm_master_init (eqs, SSVM_SEGMENT_MEMFD)) |
| 1223 | { |
| 1224 | clib_warning ("failed to initialize queue segment"); |
| 1225 | return; |
| 1226 | } |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1227 | } |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1228 | |
| 1229 | if (smm->evt_qs_use_memfd_seg) |
| 1230 | oldheap = ssvm_push_heap (eqs->sh); |
| 1231 | else |
| 1232 | oldheap = svm_push_data_heap (am->vlib_rp); |
| 1233 | |
| 1234 | for (i = 0; i < vec_len (smm->vpp_event_queues); i++) |
| 1235 | { |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 1236 | svm_msg_q_cfg_t _cfg, *cfg = &_cfg; |
| 1237 | u32 notif_q_size = clib_max (16, evt_q_length >> 4); |
| 1238 | svm_msg_q_ring_cfg_t rc[SESSION_MQ_N_RINGS] = { |
| 1239 | {evt_q_length, evt_size, 0} |
| 1240 | , |
| 1241 | {notif_q_size, 256, 0} |
| 1242 | }; |
| 1243 | cfg->consumer_pid = 0; |
| 1244 | cfg->n_rings = 2; |
| 1245 | cfg->q_nitems = evt_q_length; |
| 1246 | cfg->ring_cfgs = rc; |
| 1247 | smm->vpp_event_queues[i] = svm_msg_q_alloc (cfg); |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1248 | } |
| 1249 | |
| 1250 | if (smm->evt_qs_use_memfd_seg) |
| 1251 | ssvm_pop_heap (oldheap); |
| 1252 | else |
| 1253 | svm_pop_heap (oldheap); |
| 1254 | } |
| 1255 | |
| 1256 | ssvm_private_t * |
| 1257 | session_manager_get_evt_q_segment (void) |
| 1258 | { |
| 1259 | session_manager_main_t *smm = &session_manager_main; |
| 1260 | if (smm->evt_qs_use_memfd_seg) |
| 1261 | return &smm->evt_qs_segment; |
| 1262 | return 0; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1263 | } |
| 1264 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1265 | /* *INDENT-OFF* */ |
| 1266 | static session_fifo_rx_fn *session_tx_fns[TRANSPORT_TX_N_FNS] = { |
| 1267 | session_tx_fifo_peek_and_snd, |
| 1268 | session_tx_fifo_dequeue_and_snd, |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1269 | session_tx_fifo_dequeue_internal, |
| 1270 | session_tx_fifo_dequeue_and_snd |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1271 | }; |
| 1272 | /* *INDENT-ON* */ |
| 1273 | |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1274 | /** |
| 1275 | * Initialize session layer for given transport proto and ip version |
| 1276 | * |
| 1277 | * Allocates per session type (transport proto + ip version) data structures |
| 1278 | * and adds arc from session queue node to session type output node. |
| 1279 | */ |
| 1280 | void |
| 1281 | session_register_transport (transport_proto_t transport_proto, |
| 1282 | const transport_proto_vft_t * vft, u8 is_ip4, |
| 1283 | u32 output_node) |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1284 | { |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1285 | session_manager_main_t *smm = &session_manager_main; |
| 1286 | session_type_t session_type; |
| 1287 | u32 next_index = ~0; |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1288 | |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1289 | session_type = session_type_from_proto_and_ip (transport_proto, is_ip4); |
| 1290 | |
| 1291 | vec_validate (smm->session_type_to_next, session_type); |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1292 | vec_validate (smm->session_tx_fns, session_type); |
| 1293 | |
| 1294 | /* *INDENT-OFF* */ |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1295 | if (output_node != ~0) |
| 1296 | { |
| 1297 | foreach_vlib_main (({ |
| 1298 | next_index = vlib_node_add_next (this_vlib_main, |
| 1299 | session_queue_node.index, |
| 1300 | output_node); |
| 1301 | })); |
| 1302 | } |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1303 | /* *INDENT-ON* */ |
| 1304 | |
| 1305 | smm->session_type_to_next[session_type] = next_index; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1306 | smm->session_tx_fns[session_type] = session_tx_fns[vft->tx_type]; |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1307 | } |
| 1308 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1309 | transport_connection_t * |
| 1310 | session_get_transport (stream_session_t * s) |
| 1311 | { |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1312 | transport_proto_t tp; |
Florin Coras | ade70e4 | 2017-10-14 18:56:41 -0700 | [diff] [blame] | 1313 | if (s->session_state != SESSION_STATE_LISTENING) |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1314 | { |
| 1315 | tp = session_get_transport_proto (s); |
| 1316 | return tp_vfts[tp].get_connection (s->connection_index, |
| 1317 | s->thread_index); |
| 1318 | } |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1319 | return 0; |
| 1320 | } |
| 1321 | |
| 1322 | transport_connection_t * |
| 1323 | listen_session_get_transport (stream_session_t * s) |
| 1324 | { |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1325 | transport_proto_t tp = session_get_transport_proto (s); |
| 1326 | return tp_vfts[tp].get_listener (s->connection_index); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1327 | } |
| 1328 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1329 | int |
| 1330 | listen_session_get_local_session_endpoint (stream_session_t * listener, |
| 1331 | session_endpoint_t * sep) |
| 1332 | { |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1333 | transport_proto_t tp = session_get_transport_proto (listener); |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1334 | transport_connection_t *tc; |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1335 | tc = tp_vfts[tp].get_listener (listener->connection_index); |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1336 | if (!tc) |
| 1337 | { |
| 1338 | clib_warning ("no transport"); |
| 1339 | return -1; |
| 1340 | } |
| 1341 | |
| 1342 | /* N.B. The ip should not be copied because this is the local endpoint */ |
| 1343 | sep->port = tc->lcl_port; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1344 | sep->transport_proto = tc->proto; |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1345 | sep->is_ip4 = tc->is_ip4; |
| 1346 | return 0; |
| 1347 | } |
| 1348 | |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 1349 | void |
| 1350 | session_flush_frames_main_thread (vlib_main_t * vm) |
| 1351 | { |
| 1352 | ASSERT (vlib_get_thread_index () == 0); |
| 1353 | vlib_process_signal_event_mt (vm, session_queue_process_node.index, |
| 1354 | SESSION_Q_PROCESS_FLUSH_FRAMES, 0); |
| 1355 | } |
| 1356 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1357 | static clib_error_t * |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1358 | session_manager_main_enable (vlib_main_t * vm) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1359 | { |
Florin Coras | a332c46 | 2018-01-31 06:52:17 -0800 | [diff] [blame] | 1360 | segment_manager_main_init_args_t _sm_args = { 0 }, *sm_args = &_sm_args; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1361 | session_manager_main_t *smm = &session_manager_main; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1362 | vlib_thread_main_t *vtm = vlib_get_thread_main (); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1363 | u32 num_threads, preallocated_sessions_per_worker; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1364 | int i, j; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1365 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1366 | num_threads = 1 /* main thread */ + vtm->n_threads; |
| 1367 | |
| 1368 | if (num_threads < 1) |
| 1369 | return clib_error_return (0, "n_thread_stacks not set"); |
| 1370 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1371 | /* configure per-thread ** vectors */ |
| 1372 | vec_validate (smm->sessions, num_threads - 1); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1373 | vec_validate (smm->tx_buffers, num_threads - 1); |
Dave Barach | acd2a6a | 2017-05-16 17:41:34 -0400 | [diff] [blame] | 1374 | vec_validate (smm->pending_event_vector, num_threads - 1); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1375 | vec_validate (smm->pending_disconnects, num_threads - 1); |
Dave Barach | acd2a6a | 2017-05-16 17:41:34 -0400 | [diff] [blame] | 1376 | vec_validate (smm->free_event_vector, num_threads - 1); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1377 | vec_validate (smm->vpp_event_queues, num_threads - 1); |
Florin Coras | 84a30ef | 2018-01-24 10:49:23 -0800 | [diff] [blame] | 1378 | vec_validate (smm->peekers_rw_locks, num_threads - 1); |
Florin Coras | 8e43d04 | 2018-05-04 15:46:57 -0700 | [diff] [blame] | 1379 | vec_validate_aligned (smm->ctx, num_threads - 1, CLIB_CACHE_LINE_BYTES); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1380 | |
| 1381 | for (i = 0; i < TRANSPORT_N_PROTO; i++) |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1382 | { |
| 1383 | vec_validate (smm->current_enqueue_epoch[i], num_threads - 1); |
| 1384 | vec_validate (smm->session_to_enqueue[i], num_threads - 1); |
| 1385 | for (j = 0; j < num_threads; j++) |
| 1386 | smm->current_enqueue_epoch[i][j] = 1; |
| 1387 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1388 | |
Dave Barach | acd2a6a | 2017-05-16 17:41:34 -0400 | [diff] [blame] | 1389 | for (i = 0; i < num_threads; i++) |
| 1390 | { |
| 1391 | vec_validate (smm->free_event_vector[i], 0); |
| 1392 | _vec_len (smm->free_event_vector[i]) = 0; |
| 1393 | vec_validate (smm->pending_event_vector[i], 0); |
| 1394 | _vec_len (smm->pending_event_vector[i]) = 0; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1395 | vec_validate (smm->pending_disconnects[i], 0); |
| 1396 | _vec_len (smm->pending_disconnects[i]) = 0; |
Florin Coras | 29ca16f | 2017-11-02 18:14:17 -0400 | [diff] [blame] | 1397 | if (num_threads > 1) |
Florin Coras | 84a30ef | 2018-01-24 10:49:23 -0800 | [diff] [blame] | 1398 | clib_rwlock_init (&smm->peekers_rw_locks[i]); |
Dave Barach | acd2a6a | 2017-05-16 17:41:34 -0400 | [diff] [blame] | 1399 | } |
| 1400 | |
Florin Coras | c1a448b | 2018-04-20 10:51:49 -0700 | [diff] [blame] | 1401 | #if SESSION_DEBUG |
Florin Coras | 3e350af | 2017-03-30 02:54:28 -0700 | [diff] [blame] | 1402 | vec_validate (smm->last_event_poll_by_thread, num_threads - 1); |
| 1403 | #endif |
| 1404 | |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1405 | /* Allocate vpp event queues segment and queue */ |
| 1406 | session_vpp_event_queues_allocate (smm); |
| 1407 | |
| 1408 | /* Initialize fifo segment main baseva and timeout */ |
Florin Coras | a332c46 | 2018-01-31 06:52:17 -0800 | [diff] [blame] | 1409 | sm_args->baseva = smm->session_baseva + smm->evt_qs_segment_size; |
| 1410 | sm_args->size = smm->session_va_space_size; |
| 1411 | segment_manager_main_init (sm_args); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1412 | |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1413 | /* Preallocate sessions */ |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1414 | if (smm->preallocated_sessions) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1415 | { |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1416 | if (num_threads == 1) |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1417 | { |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1418 | pool_init_fixed (smm->sessions[0], smm->preallocated_sessions); |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1419 | } |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1420 | else |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1421 | { |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1422 | int j; |
| 1423 | preallocated_sessions_per_worker = |
| 1424 | (1.1 * (f64) smm->preallocated_sessions / |
| 1425 | (f64) (num_threads - 1)); |
| 1426 | |
| 1427 | for (j = 1; j < num_threads; j++) |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1428 | { |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1429 | pool_init_fixed (smm->sessions[j], |
| 1430 | preallocated_sessions_per_worker); |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1431 | } |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1432 | } |
| 1433 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1434 | |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 1435 | session_lookup_init (); |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1436 | app_namespaces_init (); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1437 | transport_init (); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1438 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1439 | smm->is_enabled = 1; |
| 1440 | |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1441 | /* Enable transports */ |
| 1442 | transport_enable_disable (vm, 1); |
Florin Coras | a0b34a7 | 2017-03-07 01:20:52 -0800 | [diff] [blame] | 1443 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1444 | return 0; |
| 1445 | } |
| 1446 | |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1447 | void |
| 1448 | session_node_enable_disable (u8 is_en) |
| 1449 | { |
| 1450 | u8 state = is_en ? VLIB_NODE_STATE_POLLING : VLIB_NODE_STATE_DISABLED; |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 1451 | vlib_thread_main_t *vtm = vlib_get_thread_main (); |
| 1452 | u8 have_workers = vtm->n_threads != 0; |
| 1453 | |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1454 | /* *INDENT-OFF* */ |
| 1455 | foreach_vlib_main (({ |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 1456 | if (have_workers && ii == 0) |
| 1457 | { |
| 1458 | vlib_node_set_state (this_vlib_main, session_queue_process_node.index, |
| 1459 | state); |
| 1460 | if (is_en) |
| 1461 | { |
| 1462 | vlib_node_t *n = vlib_get_node (this_vlib_main, |
| 1463 | session_queue_process_node.index); |
| 1464 | vlib_start_process (this_vlib_main, n->runtime_index); |
| 1465 | } |
| 1466 | else |
| 1467 | { |
| 1468 | vlib_process_signal_event_mt (this_vlib_main, |
| 1469 | session_queue_process_node.index, |
| 1470 | SESSION_Q_PROCESS_STOP, 0); |
| 1471 | } |
| 1472 | |
| 1473 | continue; |
| 1474 | } |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1475 | vlib_node_set_state (this_vlib_main, session_queue_node.index, |
| 1476 | state); |
| 1477 | })); |
| 1478 | /* *INDENT-ON* */ |
| 1479 | } |
| 1480 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1481 | clib_error_t * |
| 1482 | vnet_session_enable_disable (vlib_main_t * vm, u8 is_en) |
| 1483 | { |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1484 | clib_error_t *error = 0; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1485 | if (is_en) |
| 1486 | { |
| 1487 | if (session_manager_main.is_enabled) |
| 1488 | return 0; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1489 | |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1490 | session_node_enable_disable (is_en); |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1491 | error = session_manager_main_enable (vm); |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1492 | } |
| 1493 | else |
| 1494 | { |
| 1495 | session_manager_main.is_enabled = 0; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1496 | session_node_enable_disable (is_en); |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1497 | } |
| 1498 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1499 | return error; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1500 | } |
| 1501 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1502 | clib_error_t * |
| 1503 | session_manager_main_init (vlib_main_t * vm) |
| 1504 | { |
| 1505 | session_manager_main_t *smm = &session_manager_main; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1506 | smm->session_baseva = 0x200000000ULL; |
Florin Coras | a332c46 | 2018-01-31 06:52:17 -0800 | [diff] [blame] | 1507 | smm->session_va_space_size = (u64) 128 << 30; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1508 | smm->evt_qs_segment_size = 64 << 20; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1509 | smm->is_enabled = 0; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1510 | return 0; |
| 1511 | } |
| 1512 | |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1513 | VLIB_INIT_FUNCTION (session_manager_main_init); |
| 1514 | |
| 1515 | static clib_error_t * |
| 1516 | session_config_fn (vlib_main_t * vm, unformat_input_t * input) |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1517 | { |
| 1518 | session_manager_main_t *smm = &session_manager_main; |
| 1519 | u32 nitems; |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1520 | uword tmp; |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1521 | |
| 1522 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 1523 | { |
| 1524 | if (unformat (input, "event-queue-length %d", &nitems)) |
| 1525 | { |
| 1526 | if (nitems >= 2048) |
| 1527 | smm->configured_event_queue_length = nitems; |
| 1528 | else |
| 1529 | clib_warning ("event queue length %d too small, ignored", nitems); |
| 1530 | } |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1531 | else if (unformat (input, "preallocated-sessions %d", |
| 1532 | &smm->preallocated_sessions)) |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1533 | ; |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1534 | else if (unformat (input, "v4-session-table-buckets %d", |
| 1535 | &smm->configured_v4_session_table_buckets)) |
| 1536 | ; |
| 1537 | else if (unformat (input, "v4-halfopen-table-buckets %d", |
| 1538 | &smm->configured_v4_halfopen_table_buckets)) |
| 1539 | ; |
| 1540 | else if (unformat (input, "v6-session-table-buckets %d", |
| 1541 | &smm->configured_v6_session_table_buckets)) |
| 1542 | ; |
| 1543 | else if (unformat (input, "v6-halfopen-table-buckets %d", |
| 1544 | &smm->configured_v6_halfopen_table_buckets)) |
| 1545 | ; |
| 1546 | else if (unformat (input, "v4-session-table-memory %U", |
| 1547 | unformat_memory_size, &tmp)) |
| 1548 | { |
| 1549 | if (tmp >= 0x100000000) |
| 1550 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1551 | tmp, tmp); |
| 1552 | smm->configured_v4_session_table_memory = tmp; |
| 1553 | } |
| 1554 | else if (unformat (input, "v4-halfopen-table-memory %U", |
| 1555 | unformat_memory_size, &tmp)) |
| 1556 | { |
| 1557 | if (tmp >= 0x100000000) |
| 1558 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1559 | tmp, tmp); |
| 1560 | smm->configured_v4_halfopen_table_memory = tmp; |
| 1561 | } |
| 1562 | else if (unformat (input, "v6-session-table-memory %U", |
| 1563 | unformat_memory_size, &tmp)) |
| 1564 | { |
| 1565 | if (tmp >= 0x100000000) |
| 1566 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1567 | tmp, tmp); |
| 1568 | smm->configured_v6_session_table_memory = tmp; |
| 1569 | } |
| 1570 | else if (unformat (input, "v6-halfopen-table-memory %U", |
| 1571 | unformat_memory_size, &tmp)) |
| 1572 | { |
| 1573 | if (tmp >= 0x100000000) |
| 1574 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1575 | tmp, tmp); |
| 1576 | smm->configured_v6_halfopen_table_memory = tmp; |
| 1577 | } |
Florin Coras | 93e6580 | 2017-11-29 00:07:11 -0500 | [diff] [blame] | 1578 | else if (unformat (input, "local-endpoints-table-memory %U", |
| 1579 | unformat_memory_size, &tmp)) |
| 1580 | { |
| 1581 | if (tmp >= 0x100000000) |
| 1582 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1583 | tmp, tmp); |
| 1584 | smm->local_endpoints_table_memory = tmp; |
| 1585 | } |
| 1586 | else if (unformat (input, "local-endpoints-table-buckets %d", |
| 1587 | &smm->local_endpoints_table_buckets)) |
| 1588 | ; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1589 | else if (unformat (input, "evt_qs_memfd_seg")) |
| 1590 | smm->evt_qs_use_memfd_seg = 1; |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1591 | else |
| 1592 | return clib_error_return (0, "unknown input `%U'", |
| 1593 | format_unformat_error, input); |
| 1594 | } |
| 1595 | return 0; |
| 1596 | } |
| 1597 | |
| 1598 | VLIB_CONFIG_FUNCTION (session_config_fn, "session"); |
| 1599 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1600 | /* |
| 1601 | * fd.io coding-style-patch-verification: ON |
| 1602 | * |
| 1603 | * Local Variables: |
| 1604 | * eval: (c-set-style "gnu") |
| 1605 | * End: |
| 1606 | */ |