Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1 | /* |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 2 | * Copyright (c) 2017-2019 Cisco and/or its affiliates. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 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 <vnet/dpo/load_balance.h> |
| 24 | #include <vnet/fib/ip4_fib.h> |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 25 | |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 26 | session_main_t session_main; |
Florin Coras | 3eb5062 | 2017-07-13 01:24:57 -0400 | [diff] [blame] | 27 | |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 28 | static inline int |
| 29 | session_send_evt_to_thread (void *data, void *args, u32 thread_index, |
| 30 | session_evt_type_t evt_type) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 31 | { |
Florin Coras | 52207f1 | 2018-07-12 14:48:06 -0700 | [diff] [blame] | 32 | session_event_t *evt; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 33 | svm_msg_q_msg_t msg; |
| 34 | svm_msg_q_t *mq; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 35 | |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 36 | mq = session_main_get_vpp_event_queue (thread_index); |
Nathan Skrzypczak | b4c6775 | 2019-06-20 09:58:37 +0200 | [diff] [blame] | 37 | if (PREDICT_FALSE (svm_msg_q_lock (mq))) |
| 38 | return -1; |
Nathan Skrzypczak | 989bc47 | 2019-11-19 16:48:58 +0100 | [diff] [blame] | 39 | if (PREDICT_FALSE (svm_msg_q_is_full (mq) |
| 40 | || svm_msg_q_ring_is_full (mq, SESSION_MQ_IO_EVT_RING))) |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 41 | { |
| 42 | svm_msg_q_unlock (mq); |
| 43 | return -2; |
| 44 | } |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 45 | switch (evt_type) |
| 46 | { |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 47 | case SESSION_CTRL_EVT_RPC: |
Nathan Skrzypczak | 1afa7af | 2019-09-13 17:14:57 +0200 | [diff] [blame] | 48 | msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING); |
| 49 | evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 50 | evt->rpc_args.fp = data; |
| 51 | evt->rpc_args.arg = args; |
| 52 | break; |
Aloys Augustin | 0c7f54d | 2019-07-03 16:59:43 +0200 | [diff] [blame] | 53 | case SESSION_IO_EVT_RX: |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 54 | case SESSION_IO_EVT_TX: |
Florin Coras | 844a36d | 2018-12-20 09:50:50 -0800 | [diff] [blame] | 55 | case SESSION_IO_EVT_TX_FLUSH: |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 56 | case SESSION_IO_EVT_BUILTIN_RX: |
Nathan Skrzypczak | 1afa7af | 2019-09-13 17:14:57 +0200 | [diff] [blame] | 57 | msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING); |
| 58 | evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg); |
Florin Coras | c0737e9 | 2019-03-04 14:19:39 -0800 | [diff] [blame] | 59 | evt->session_index = *(u32 *) data; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 60 | break; |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 61 | case SESSION_IO_EVT_BUILTIN_TX: |
| 62 | case SESSION_CTRL_EVT_CLOSE: |
Florin Coras | 73cad33 | 2019-08-28 17:12:32 -0700 | [diff] [blame] | 63 | case SESSION_CTRL_EVT_RESET: |
Nathan Skrzypczak | 1afa7af | 2019-09-13 17:14:57 +0200 | [diff] [blame] | 64 | msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING); |
| 65 | evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg); |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 66 | evt->session_handle = session_handle ((session_t *) data); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 67 | break; |
| 68 | default: |
| 69 | clib_warning ("evt unhandled!"); |
| 70 | svm_msg_q_unlock (mq); |
| 71 | return -1; |
| 72 | } |
Nathan Skrzypczak | 1afa7af | 2019-09-13 17:14:57 +0200 | [diff] [blame] | 73 | evt->event_type = evt_type; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 74 | |
Florin Coras | 52207f1 | 2018-07-12 14:48:06 -0700 | [diff] [blame] | 75 | svm_msg_q_add_and_unlock (mq, &msg); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 76 | return 0; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 77 | } |
| 78 | |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 79 | int |
| 80 | 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] | 81 | { |
Florin Coras | c0737e9 | 2019-03-04 14:19:39 -0800 | [diff] [blame] | 82 | return session_send_evt_to_thread (&f->master_session_index, 0, |
| 83 | f->master_thread_index, evt_type); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 84 | } |
| 85 | |
| 86 | int |
Florin Coras | ef91534 | 2018-09-29 10:23:06 -0700 | [diff] [blame] | 87 | session_send_io_evt_to_thread_custom (void *data, u32 thread_index, |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 88 | session_evt_type_t evt_type) |
| 89 | { |
Florin Coras | ef91534 | 2018-09-29 10:23:06 -0700 | [diff] [blame] | 90 | return session_send_evt_to_thread (data, 0, thread_index, evt_type); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 94 | session_send_ctrl_evt_to_thread (session_t * s, session_evt_type_t evt_type) |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 95 | { |
Florin Coras | 458089b | 2019-08-21 16:20:44 -0700 | [diff] [blame] | 96 | /* only events supported are disconnect and reset */ |
| 97 | ASSERT (evt_type == SESSION_CTRL_EVT_CLOSE |
| 98 | || evt_type == SESSION_CTRL_EVT_RESET); |
| 99 | return session_send_evt_to_thread (s, 0, s->thread_index, evt_type); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | void |
Nathan Skrzypczak | 60f3e65 | 2019-03-19 13:57:31 +0100 | [diff] [blame] | 103 | session_send_rpc_evt_to_thread_force (u32 thread_index, void *fp, |
| 104 | void *rpc_args) |
| 105 | { |
| 106 | session_send_evt_to_thread (fp, rpc_args, thread_index, |
| 107 | SESSION_CTRL_EVT_RPC); |
| 108 | } |
| 109 | |
| 110 | void |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 111 | session_send_rpc_evt_to_thread (u32 thread_index, void *fp, void *rpc_args) |
| 112 | { |
| 113 | if (thread_index != vlib_get_thread_index ()) |
Nathan Skrzypczak | 60f3e65 | 2019-03-19 13:57:31 +0100 | [diff] [blame] | 114 | session_send_rpc_evt_to_thread_force (thread_index, fp, rpc_args); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 115 | else |
| 116 | { |
| 117 | void (*fnp) (void *) = fp; |
| 118 | fnp (rpc_args); |
| 119 | } |
| 120 | } |
| 121 | |
Florin Coras | 26dd6de | 2019-07-23 23:54:47 -0700 | [diff] [blame] | 122 | void |
| 123 | session_add_self_custom_tx_evt (transport_connection_t * tc, u8 has_prio) |
| 124 | { |
| 125 | session_t *s; |
| 126 | |
| 127 | s = session_get (tc->s_index, tc->thread_index); |
| 128 | ASSERT (s->thread_index == vlib_get_thread_index ()); |
Florin Coras | be237bf | 2019-09-27 08:16:40 -0700 | [diff] [blame] | 129 | ASSERT (s->session_state != SESSION_STATE_TRANSPORT_DELETED); |
Florin Coras | 26dd6de | 2019-07-23 23:54:47 -0700 | [diff] [blame] | 130 | if (!(s->flags & SESSION_F_CUSTOM_TX)) |
| 131 | { |
| 132 | s->flags |= SESSION_F_CUSTOM_TX; |
Florin Coras | 6080e0d | 2020-03-13 20:39:43 +0000 | [diff] [blame] | 133 | if (svm_fifo_set_event (s->tx_fifo) |
| 134 | || transport_connection_is_descheduled (tc)) |
Florin Coras | 26dd6de | 2019-07-23 23:54:47 -0700 | [diff] [blame] | 135 | { |
| 136 | session_worker_t *wrk; |
| 137 | session_evt_elt_t *elt; |
| 138 | wrk = session_main_get_worker (tc->thread_index); |
| 139 | if (has_prio) |
| 140 | elt = session_evt_alloc_new (wrk); |
| 141 | else |
| 142 | elt = session_evt_alloc_old (wrk); |
| 143 | elt->evt.session_index = tc->s_index; |
| 144 | elt->evt.event_type = SESSION_IO_EVT_TX; |
Florin Coras | 6080e0d | 2020-03-13 20:39:43 +0000 | [diff] [blame] | 145 | tc->flags &= ~TRANSPORT_CONNECTION_F_DESCHED; |
Florin Coras | 26dd6de | 2019-07-23 23:54:47 -0700 | [diff] [blame] | 146 | } |
| 147 | } |
| 148 | } |
| 149 | |
Florin Coras | 70f879d | 2020-03-13 17:54:42 +0000 | [diff] [blame] | 150 | void |
| 151 | sesssion_reschedule_tx (transport_connection_t * tc) |
| 152 | { |
| 153 | session_worker_t *wrk = session_main_get_worker (tc->thread_index); |
| 154 | session_evt_elt_t *elt; |
| 155 | |
| 156 | ASSERT (tc->thread_index == vlib_get_thread_index ()); |
| 157 | |
| 158 | elt = session_evt_alloc_new (wrk); |
| 159 | elt->evt.session_index = tc->s_index; |
| 160 | elt->evt.event_type = SESSION_IO_EVT_TX; |
| 161 | } |
| 162 | |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 163 | static void |
Florin Coras | dfb3b87 | 2019-08-16 17:48:44 -0700 | [diff] [blame] | 164 | session_program_transport_ctrl_evt (session_t * s, session_evt_type_t evt) |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 165 | { |
| 166 | u32 thread_index = vlib_get_thread_index (); |
Florin Coras | 2062ec0 | 2019-07-15 13:15:18 -0700 | [diff] [blame] | 167 | session_evt_elt_t *elt; |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 168 | session_worker_t *wrk; |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 169 | |
| 170 | /* If we are in the handler thread, or being called with the worker barrier |
| 171 | * held, just append a new event to pending disconnects vector. */ |
| 172 | if (vlib_thread_is_main_w_barrier () || thread_index == s->thread_index) |
| 173 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 174 | wrk = session_main_get_worker (s->thread_index); |
Florin Coras | b0ffbee | 2019-07-21 19:23:46 -0700 | [diff] [blame] | 175 | elt = session_evt_alloc_ctrl (wrk); |
Florin Coras | 2062ec0 | 2019-07-15 13:15:18 -0700 | [diff] [blame] | 176 | clib_memset (&elt->evt, 0, sizeof (session_event_t)); |
| 177 | elt->evt.session_handle = session_handle (s); |
Florin Coras | dfb3b87 | 2019-08-16 17:48:44 -0700 | [diff] [blame] | 178 | elt->evt.event_type = evt; |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 179 | } |
| 180 | else |
Florin Coras | dfb3b87 | 2019-08-16 17:48:44 -0700 | [diff] [blame] | 181 | session_send_ctrl_evt_to_thread (s, evt); |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 182 | } |
| 183 | |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 184 | session_t * |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 185 | session_alloc (u32 thread_index) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 186 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 187 | session_worker_t *wrk = &session_main.wrk[thread_index]; |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 188 | session_t *s; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 189 | u8 will_expand = 0; |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 190 | pool_get_aligned_will_expand (wrk->sessions, will_expand, |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 191 | CLIB_CACHE_LINE_BYTES); |
| 192 | /* If we have peekers, let them finish */ |
Florin Coras | 84a30ef | 2018-01-24 10:49:23 -0800 | [diff] [blame] | 193 | if (PREDICT_FALSE (will_expand && vlib_num_workers ())) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 194 | { |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 195 | clib_rwlock_writer_lock (&wrk->peekers_rw_locks); |
| 196 | pool_get_aligned (wrk->sessions, s, CLIB_CACHE_LINE_BYTES); |
| 197 | clib_rwlock_writer_unlock (&wrk->peekers_rw_locks); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 198 | } |
| 199 | else |
| 200 | { |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 201 | pool_get_aligned (wrk->sessions, s, CLIB_CACHE_LINE_BYTES); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 202 | } |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 203 | clib_memset (s, 0, sizeof (*s)); |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 204 | s->session_index = s - wrk->sessions; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 205 | s->thread_index = thread_index; |
Nathan Skrzypczak | 2f0f96b | 2019-06-13 10:14:28 +0200 | [diff] [blame] | 206 | s->app_index = APP_INVALID_INDEX; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 207 | return s; |
| 208 | } |
| 209 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 210 | void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 211 | session_free (session_t * s) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 212 | { |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 213 | if (CLIB_DEBUG) |
Florin Coras | 6416e62 | 2019-04-03 17:52:43 -0700 | [diff] [blame] | 214 | { |
| 215 | u8 thread_index = s->thread_index; |
| 216 | clib_memset (s, 0xFA, sizeof (*s)); |
| 217 | pool_put (session_main.wrk[thread_index].sessions, s); |
| 218 | return; |
| 219 | } |
Florin Coras | cca9618 | 2019-07-19 07:34:13 -0700 | [diff] [blame] | 220 | SESSION_EVT (SESSION_EVT_FREE, s); |
Florin Coras | 6416e62 | 2019-04-03 17:52:43 -0700 | [diff] [blame] | 221 | pool_put (session_main.wrk[s->thread_index].sessions, s); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 222 | } |
| 223 | |
Srikanth Akula | e140d5d | 2019-11-18 11:49:58 -0800 | [diff] [blame] | 224 | u8 |
| 225 | session_is_valid (u32 si, u8 thread_index) |
| 226 | { |
| 227 | session_t *s; |
| 228 | transport_connection_t *tc; |
| 229 | |
| 230 | s = pool_elt_at_index (session_main.wrk[thread_index].sessions, si); |
| 231 | |
| 232 | if (!s) |
| 233 | return 1; |
| 234 | |
| 235 | if (s->thread_index != thread_index || s->session_index != si) |
| 236 | return 0; |
| 237 | |
| 238 | if (s->session_state == SESSION_STATE_TRANSPORT_DELETED |
| 239 | || s->session_state <= SESSION_STATE_LISTENING) |
| 240 | return 1; |
| 241 | |
| 242 | tc = session_get_transport (s); |
| 243 | if (s->connection_index != tc->c_index |
| 244 | || s->thread_index != tc->thread_index || tc->s_index != si) |
| 245 | return 0; |
| 246 | |
| 247 | return 1; |
| 248 | } |
| 249 | |
Florin Coras | 70f26d5 | 2019-07-08 11:47:18 -0700 | [diff] [blame] | 250 | static void |
| 251 | session_cleanup_notify (session_t * s, session_cleanup_ntf_t ntf) |
| 252 | { |
| 253 | app_worker_t *app_wrk; |
| 254 | |
| 255 | app_wrk = app_worker_get_if_valid (s->app_wrk_index); |
| 256 | if (!app_wrk) |
| 257 | return; |
| 258 | app_worker_cleanup_notify (app_wrk, s, ntf); |
| 259 | } |
| 260 | |
Florin Coras | eb97e5f | 2018-10-15 21:35:42 -0700 | [diff] [blame] | 261 | void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 262 | session_free_w_fifos (session_t * s) |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 263 | { |
Florin Coras | 70f26d5 | 2019-07-08 11:47:18 -0700 | [diff] [blame] | 264 | session_cleanup_notify (s, SESSION_CLEANUP_SESSION); |
Florin Coras | 19223e0 | 2019-03-03 14:56:05 -0800 | [diff] [blame] | 265 | segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo); |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 266 | session_free (s); |
| 267 | } |
| 268 | |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 269 | /** |
| 270 | * Cleans up session and lookup table. |
| 271 | * |
| 272 | * Transport connection must still be valid. |
| 273 | */ |
| 274 | static void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 275 | session_delete (session_t * s) |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 276 | { |
| 277 | int rv; |
| 278 | |
| 279 | /* Delete from the main lookup table. */ |
| 280 | if ((rv = session_lookup_del_session (s))) |
Florin Coras | d09236d | 2019-08-08 17:38:26 -0700 | [diff] [blame] | 281 | clib_warning ("session %u hash delete rv %d", s->session_index, rv); |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 282 | |
| 283 | session_free_w_fifos (s); |
| 284 | } |
| 285 | |
Andreas Schultz | 1a8c437 | 2020-03-20 09:39:59 +0100 | [diff] [blame] | 286 | session_t * |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 287 | session_alloc_for_connection (transport_connection_t * tc) |
| 288 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 289 | session_t *s; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 290 | u32 thread_index = tc->thread_index; |
| 291 | |
Florin Coras | 40903ac | 2018-06-10 14:41:23 -0700 | [diff] [blame] | 292 | ASSERT (thread_index == vlib_get_thread_index () |
| 293 | || transport_protocol_is_cl (tc->proto)); |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 294 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 295 | s = session_alloc (thread_index); |
| 296 | s->session_type = session_type_from_proto_and_ip (tc->proto, tc->is_ip4); |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 297 | s->session_state = SESSION_STATE_CLOSED; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 298 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 299 | /* Attach transport to session and vice versa */ |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 300 | s->connection_index = tc->c_index; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 301 | tc->s_index = s->session_index; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 302 | return s; |
| 303 | } |
| 304 | |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 305 | /** |
| 306 | * Discards bytes from buffer chain |
| 307 | * |
| 308 | * It discards n_bytes_to_drop starting at first buffer after chain_b |
| 309 | */ |
| 310 | always_inline void |
| 311 | session_enqueue_discard_chain_bytes (vlib_main_t * vm, vlib_buffer_t * b, |
| 312 | vlib_buffer_t ** chain_b, |
| 313 | u32 n_bytes_to_drop) |
| 314 | { |
| 315 | vlib_buffer_t *next = *chain_b; |
| 316 | u32 to_drop = n_bytes_to_drop; |
| 317 | ASSERT (b->flags & VLIB_BUFFER_NEXT_PRESENT); |
| 318 | while (to_drop && (next->flags & VLIB_BUFFER_NEXT_PRESENT)) |
| 319 | { |
| 320 | next = vlib_get_buffer (vm, next->next_buffer); |
| 321 | if (next->current_length > to_drop) |
| 322 | { |
| 323 | vlib_buffer_advance (next, to_drop); |
| 324 | to_drop = 0; |
| 325 | } |
| 326 | else |
| 327 | { |
| 328 | to_drop -= next->current_length; |
| 329 | next->current_length = 0; |
| 330 | } |
| 331 | } |
| 332 | *chain_b = next; |
| 333 | |
| 334 | if (to_drop == 0) |
| 335 | b->total_length_not_including_first_buffer -= n_bytes_to_drop; |
| 336 | } |
| 337 | |
| 338 | /** |
| 339 | * Enqueue buffer chain tail |
| 340 | */ |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 341 | always_inline int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 342 | session_enqueue_chain_tail (session_t * s, vlib_buffer_t * b, |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 343 | u32 offset, u8 is_in_order) |
| 344 | { |
| 345 | vlib_buffer_t *chain_b; |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 346 | u32 chain_bi, len, diff; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 347 | vlib_main_t *vm = vlib_get_main (); |
Florin Coras | b2215d6 | 2017-08-01 16:56:58 -0700 | [diff] [blame] | 348 | u8 *data; |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 349 | u32 written = 0; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 350 | int rv = 0; |
| 351 | |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 352 | if (is_in_order && offset) |
| 353 | { |
| 354 | diff = offset - b->current_length; |
| 355 | if (diff > b->total_length_not_including_first_buffer) |
| 356 | return 0; |
| 357 | chain_b = b; |
| 358 | session_enqueue_discard_chain_bytes (vm, b, &chain_b, diff); |
| 359 | chain_bi = vlib_get_buffer_index (vm, chain_b); |
| 360 | } |
| 361 | else |
| 362 | chain_bi = b->next_buffer; |
| 363 | |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 364 | do |
| 365 | { |
| 366 | chain_b = vlib_get_buffer (vm, chain_bi); |
| 367 | data = vlib_buffer_get_current (chain_b); |
| 368 | len = chain_b->current_length; |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 369 | if (!len) |
| 370 | continue; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 371 | if (is_in_order) |
| 372 | { |
Florin Coras | 87b15ce | 2019-04-28 21:16:30 -0700 | [diff] [blame] | 373 | rv = svm_fifo_enqueue (s->rx_fifo, len, data); |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 374 | if (rv == len) |
| 375 | { |
| 376 | written += rv; |
| 377 | } |
| 378 | else if (rv < len) |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 379 | { |
| 380 | return (rv > 0) ? (written + rv) : written; |
| 381 | } |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 382 | else if (rv > len) |
| 383 | { |
| 384 | written += rv; |
| 385 | |
| 386 | /* written more than what was left in chain */ |
| 387 | if (written > b->total_length_not_including_first_buffer) |
| 388 | return written; |
| 389 | |
| 390 | /* drop the bytes that have already been delivered */ |
| 391 | session_enqueue_discard_chain_bytes (vm, b, &chain_b, rv - len); |
| 392 | } |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 393 | } |
| 394 | else |
| 395 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 396 | rv = svm_fifo_enqueue_with_offset (s->rx_fifo, offset, len, data); |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 397 | if (rv) |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 398 | { |
| 399 | clib_warning ("failed to enqueue multi-buffer seg"); |
| 400 | return -1; |
| 401 | } |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 402 | offset += len; |
| 403 | } |
| 404 | } |
| 405 | while ((chain_bi = (chain_b->flags & VLIB_BUFFER_NEXT_PRESENT) |
| 406 | ? chain_b->next_buffer : 0)); |
| 407 | |
| 408 | if (is_in_order) |
| 409 | return written; |
| 410 | |
| 411 | return 0; |
| 412 | } |
| 413 | |
Ryujiro Shibuya | d8f48e2 | 2020-01-22 12:11:42 +0000 | [diff] [blame] | 414 | void |
| 415 | session_fifo_tuning (session_t * s, svm_fifo_t * f, |
| 416 | session_ft_action_t act, u32 len) |
| 417 | { |
| 418 | if (s->flags & SESSION_F_CUSTOM_FIFO_TUNING) |
| 419 | { |
| 420 | app_worker_t *app_wrk = app_worker_get (s->app_wrk_index); |
| 421 | app_worker_session_fifo_tuning (app_wrk, s, f, act, len); |
| 422 | if (CLIB_ASSERT_ENABLE) |
| 423 | { |
| 424 | segment_manager_t *sm; |
| 425 | sm = segment_manager_get (f->segment_manager); |
| 426 | ASSERT (f->size >= 4096); |
| 427 | ASSERT (f->size <= sm->max_fifo_size); |
| 428 | } |
| 429 | } |
| 430 | } |
| 431 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 432 | /* |
| 433 | * Enqueue data for delivery to session peer. Does not notify peer of enqueue |
| 434 | * event but on request can queue notification events for later delivery by |
| 435 | * calling stream_server_flush_enqueue_events(). |
| 436 | * |
| 437 | * @param tc Transport connection which is to be enqueued data |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 438 | * @param b Buffer to be enqueued |
| 439 | * @param offset Offset at which to start enqueueing if out-of-order |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 440 | * @param queue_event Flag to indicate if peer is to be notified or if event |
| 441 | * is to be queued. The former is useful when more data is |
| 442 | * enqueued and only one event is to be generated. |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 443 | * @param is_in_order Flag to indicate if data is in order |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 444 | * @return Number of bytes enqueued or a negative value if enqueueing failed. |
| 445 | */ |
| 446 | int |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 447 | session_enqueue_stream_connection (transport_connection_t * tc, |
| 448 | vlib_buffer_t * b, u32 offset, |
| 449 | u8 queue_event, u8 is_in_order) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 450 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 451 | session_t *s; |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 452 | int enqueued = 0, rv, in_order_off; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 453 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 454 | s = session_get (tc->s_index, tc->thread_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 455 | |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 456 | if (is_in_order) |
| 457 | { |
Florin Coras | 87b15ce | 2019-04-28 21:16:30 -0700 | [diff] [blame] | 458 | enqueued = svm_fifo_enqueue (s->rx_fifo, |
| 459 | b->current_length, |
| 460 | vlib_buffer_get_current (b)); |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 461 | if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) |
| 462 | && enqueued >= 0)) |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 463 | { |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 464 | in_order_off = enqueued > b->current_length ? enqueued : 0; |
| 465 | rv = session_enqueue_chain_tail (s, b, in_order_off, 1); |
| 466 | if (rv > 0) |
| 467 | enqueued += rv; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 468 | } |
| 469 | } |
| 470 | else |
| 471 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 472 | rv = svm_fifo_enqueue_with_offset (s->rx_fifo, offset, |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 473 | b->current_length, |
| 474 | vlib_buffer_get_current (b)); |
| 475 | if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) && !rv)) |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 476 | session_enqueue_chain_tail (s, b, offset + b->current_length, 0); |
| 477 | /* if something was enqueued, report even this as success for ooo |
| 478 | * segment handling */ |
| 479 | return rv; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 480 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 481 | |
| 482 | if (queue_event) |
| 483 | { |
| 484 | /* Queue RX event on this fifo. Eventually these will need to be flushed |
| 485 | * by calling stream_server_flush_enqueue_events () */ |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 486 | session_worker_t *wrk; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 487 | |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 488 | wrk = session_main_get_worker (s->thread_index); |
Florin Coras | d5c604d | 2019-03-18 09:06:35 -0700 | [diff] [blame] | 489 | if (!(s->flags & SESSION_F_RX_EVT)) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 490 | { |
Florin Coras | d5c604d | 2019-03-18 09:06:35 -0700 | [diff] [blame] | 491 | s->flags |= SESSION_F_RX_EVT; |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 492 | vec_add1 (wrk->session_to_enqueue[tc->proto], s->session_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 493 | } |
Ryujiro Shibuya | d8f48e2 | 2020-01-22 12:11:42 +0000 | [diff] [blame] | 494 | |
| 495 | session_fifo_tuning (s, s->rx_fifo, SESSION_FT_ACTION_ENQUEUED, 0); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 496 | } |
| 497 | |
Chris Luke | b2bcad6 | 2017-09-18 08:51:22 -0400 | [diff] [blame] | 498 | return enqueued; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 499 | } |
| 500 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 501 | int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 502 | session_enqueue_dgram_connection (session_t * s, |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 503 | session_dgram_hdr_t * hdr, |
| 504 | vlib_buffer_t * b, u8 proto, u8 queue_event) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 505 | { |
| 506 | int enqueued = 0, rv, in_order_off; |
| 507 | |
Sirshak Das | 28aa539 | 2019-02-05 01:33:33 -0600 | [diff] [blame] | 508 | ASSERT (svm_fifo_max_enqueue_prod (s->rx_fifo) |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 509 | >= b->current_length + sizeof (*hdr)); |
| 510 | |
Florin Coras | 87b15ce | 2019-04-28 21:16:30 -0700 | [diff] [blame] | 511 | svm_fifo_enqueue (s->rx_fifo, sizeof (session_dgram_hdr_t), (u8 *) hdr); |
| 512 | enqueued = svm_fifo_enqueue (s->rx_fifo, b->current_length, |
| 513 | vlib_buffer_get_current (b)); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 514 | if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) && enqueued >= 0)) |
| 515 | { |
| 516 | in_order_off = enqueued > b->current_length ? enqueued : 0; |
| 517 | rv = session_enqueue_chain_tail (s, b, in_order_off, 1); |
| 518 | if (rv > 0) |
| 519 | enqueued += rv; |
| 520 | } |
| 521 | if (queue_event) |
| 522 | { |
| 523 | /* Queue RX event on this fifo. Eventually these will need to be flushed |
| 524 | * by calling stream_server_flush_enqueue_events () */ |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 525 | session_worker_t *wrk; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 526 | |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 527 | wrk = session_main_get_worker (s->thread_index); |
Florin Coras | d5c604d | 2019-03-18 09:06:35 -0700 | [diff] [blame] | 528 | if (!(s->flags & SESSION_F_RX_EVT)) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 529 | { |
Florin Coras | d5c604d | 2019-03-18 09:06:35 -0700 | [diff] [blame] | 530 | s->flags |= SESSION_F_RX_EVT; |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 531 | vec_add1 (wrk->session_to_enqueue[proto], s->session_index); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 532 | } |
Ryujiro Shibuya | d8f48e2 | 2020-01-22 12:11:42 +0000 | [diff] [blame] | 533 | |
| 534 | session_fifo_tuning (s, s->rx_fifo, SESSION_FT_ACTION_ENQUEUED, 0); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 535 | } |
| 536 | return enqueued; |
| 537 | } |
| 538 | |
Florin Coras | 93992a9 | 2017-05-24 18:03:56 -0700 | [diff] [blame] | 539 | int |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 540 | session_tx_fifo_peek_bytes (transport_connection_t * tc, u8 * buffer, |
| 541 | u32 offset, u32 max_bytes) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 542 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 543 | session_t *s = session_get (tc->s_index, tc->thread_index); |
| 544 | return svm_fifo_peek (s->tx_fifo, offset, max_bytes, buffer); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 545 | } |
| 546 | |
| 547 | u32 |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 548 | session_tx_fifo_dequeue_drop (transport_connection_t * tc, u32 max_bytes) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 549 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 550 | session_t *s = session_get (tc->s_index, tc->thread_index); |
Vladimir Kropylev | f867cf1 | 2019-06-17 21:38:00 +0300 | [diff] [blame] | 551 | u32 rv; |
| 552 | |
| 553 | rv = svm_fifo_dequeue_drop (s->tx_fifo, max_bytes); |
Ryujiro Shibuya | d8f48e2 | 2020-01-22 12:11:42 +0000 | [diff] [blame] | 554 | session_fifo_tuning (s, s->tx_fifo, SESSION_FT_ACTION_DEQUEUED, rv); |
Florin Coras | 0e573f5 | 2019-05-07 16:28:16 -0700 | [diff] [blame] | 555 | |
Florin Coras | 2d379d8 | 2019-06-28 12:45:12 -0700 | [diff] [blame] | 556 | if (svm_fifo_needs_deq_ntf (s->tx_fifo, max_bytes)) |
Florin Coras | 0e573f5 | 2019-05-07 16:28:16 -0700 | [diff] [blame] | 557 | session_dequeue_notify (s); |
| 558 | |
Vladimir Kropylev | f867cf1 | 2019-06-17 21:38:00 +0300 | [diff] [blame] | 559 | return rv; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 560 | } |
| 561 | |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 562 | static inline int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 563 | session_notify_subscribers (u32 app_index, session_t * s, |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 564 | svm_fifo_t * f, session_evt_type_t evt_type) |
| 565 | { |
| 566 | app_worker_t *app_wrk; |
| 567 | application_t *app; |
| 568 | int i; |
| 569 | |
| 570 | app = application_get (app_index); |
| 571 | if (!app) |
| 572 | return -1; |
| 573 | |
| 574 | for (i = 0; i < f->n_subscribers; i++) |
| 575 | { |
| 576 | app_wrk = application_get_worker (app, f->subscribers[i]); |
| 577 | if (!app_wrk) |
| 578 | continue; |
| 579 | if (app_worker_lock_and_send_event (app_wrk, s, evt_type)) |
| 580 | return -1; |
| 581 | } |
| 582 | |
| 583 | return 0; |
| 584 | } |
| 585 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 586 | /** |
| 587 | * Notify session peer that new data has been enqueued. |
| 588 | * |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 589 | * @param s Stream session for which the event is to be generated. |
| 590 | * @param lock Flag to indicate if call should lock message queue. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 591 | * |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 592 | * @return 0 on success or negative number if failed to send notification. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 593 | */ |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 594 | static inline int |
Florin Coras | 653e43f | 2019-03-04 10:56:23 -0800 | [diff] [blame] | 595 | session_enqueue_notify_inline (session_t * s) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 596 | { |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 597 | app_worker_t *app_wrk; |
Aloys Augustin | b3b267c | 2019-04-09 11:25:56 +0200 | [diff] [blame] | 598 | u32 session_index; |
| 599 | u8 n_subscribers; |
| 600 | |
| 601 | session_index = s->session_index; |
| 602 | n_subscribers = svm_fifo_n_subscribers (s->rx_fifo); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 603 | |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 604 | app_wrk = app_worker_get_if_valid (s->app_wrk_index); |
| 605 | if (PREDICT_FALSE (!app_wrk)) |
Dave Barach | 818eb54 | 2017-08-02 13:56:13 -0400 | [diff] [blame] | 606 | { |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 607 | SESSION_DBG ("invalid s->app_index = %d", s->app_wrk_index); |
Dave Barach | 818eb54 | 2017-08-02 13:56:13 -0400 | [diff] [blame] | 608 | return 0; |
| 609 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 610 | |
Florin Coras | cca9618 | 2019-07-19 07:34:13 -0700 | [diff] [blame] | 611 | SESSION_EVT (SESSION_EVT_ENQ, s, svm_fifo_max_dequeue_prod (s->rx_fifo)); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 612 | |
Florin Coras | d5c604d | 2019-03-18 09:06:35 -0700 | [diff] [blame] | 613 | s->flags &= ~SESSION_F_RX_EVT; |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 614 | if (PREDICT_FALSE (app_worker_lock_and_send_event (app_wrk, s, |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 615 | SESSION_IO_EVT_RX))) |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 616 | return -1; |
| 617 | |
Aloys Augustin | b3b267c | 2019-04-09 11:25:56 +0200 | [diff] [blame] | 618 | if (PREDICT_FALSE (n_subscribers)) |
| 619 | { |
| 620 | s = session_get (session_index, vlib_get_thread_index ()); |
| 621 | return session_notify_subscribers (app_wrk->app_index, s, |
| 622 | s->rx_fifo, SESSION_IO_EVT_RX); |
| 623 | } |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 624 | |
| 625 | return 0; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 626 | } |
| 627 | |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 628 | int |
Florin Coras | 653e43f | 2019-03-04 10:56:23 -0800 | [diff] [blame] | 629 | session_enqueue_notify (session_t * s) |
| 630 | { |
| 631 | return session_enqueue_notify_inline (s); |
| 632 | } |
| 633 | |
Aloys Augustin | b339233 | 2019-08-06 16:09:01 +0200 | [diff] [blame] | 634 | static void |
| 635 | session_enqueue_notify_rpc (void *arg) |
| 636 | { |
Florin Coras | 5d8a806 | 2019-08-13 08:35:39 -0700 | [diff] [blame] | 637 | u32 session_index = pointer_to_uword (arg); |
Aloys Augustin | b339233 | 2019-08-06 16:09:01 +0200 | [diff] [blame] | 638 | session_t *s; |
| 639 | |
Florin Coras | 5d8a806 | 2019-08-13 08:35:39 -0700 | [diff] [blame] | 640 | s = session_get_if_valid (session_index, vlib_get_thread_index ()); |
Aloys Augustin | b339233 | 2019-08-06 16:09:01 +0200 | [diff] [blame] | 641 | if (!s) |
| 642 | return; |
| 643 | |
| 644 | session_enqueue_notify (s); |
| 645 | } |
| 646 | |
| 647 | /** |
| 648 | * Like session_enqueue_notify, but can be called from a thread that does not |
| 649 | * own the session. |
| 650 | */ |
| 651 | void |
| 652 | session_enqueue_notify_thread (session_handle_t sh) |
| 653 | { |
| 654 | u32 thread_index = session_thread_from_handle (sh); |
Florin Coras | 5d8a806 | 2019-08-13 08:35:39 -0700 | [diff] [blame] | 655 | u32 session_index = session_index_from_handle (sh); |
| 656 | |
| 657 | /* |
| 658 | * Pass session index (u32) as opposed to handle (u64) in case pointers |
| 659 | * are not 64-bit. |
| 660 | */ |
Aloys Augustin | b339233 | 2019-08-06 16:09:01 +0200 | [diff] [blame] | 661 | session_send_rpc_evt_to_thread (thread_index, |
Florin Coras | 5d8a806 | 2019-08-13 08:35:39 -0700 | [diff] [blame] | 662 | session_enqueue_notify_rpc, |
| 663 | uword_to_pointer (session_index, void *)); |
Aloys Augustin | b339233 | 2019-08-06 16:09:01 +0200 | [diff] [blame] | 664 | } |
| 665 | |
Florin Coras | 653e43f | 2019-03-04 10:56:23 -0800 | [diff] [blame] | 666 | int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 667 | session_dequeue_notify (session_t * s) |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 668 | { |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 669 | app_worker_t *app_wrk; |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 670 | |
Vladimir Kropylev | 5c89fbf | 2019-08-30 13:04:06 +0300 | [diff] [blame] | 671 | svm_fifo_clear_deq_ntf (s->tx_fifo); |
| 672 | |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 673 | app_wrk = app_worker_get_if_valid (s->app_wrk_index); |
| 674 | if (PREDICT_FALSE (!app_wrk)) |
Florin Coras | 208daa1 | 2018-07-02 01:30:51 -0700 | [diff] [blame] | 675 | return -1; |
| 676 | |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 677 | if (PREDICT_FALSE (app_worker_lock_and_send_event (app_wrk, s, |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 678 | SESSION_IO_EVT_TX))) |
Florin Coras | 1bcad5c | 2019-01-09 20:04:38 -0800 | [diff] [blame] | 679 | return -1; |
| 680 | |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 681 | if (PREDICT_FALSE (s->tx_fifo->n_subscribers)) |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 682 | return session_notify_subscribers (app_wrk->app_index, s, |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 683 | s->tx_fifo, SESSION_IO_EVT_TX); |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 684 | |
Florin Coras | 1bcad5c | 2019-01-09 20:04:38 -0800 | [diff] [blame] | 685 | return 0; |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 686 | } |
| 687 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 688 | /** |
| 689 | * Flushes queue of sessions that are to be notified of new data |
| 690 | * enqueued events. |
| 691 | * |
| 692 | * @param thread_index Thread index for which the flush is to be performed. |
| 693 | * @return 0 on success or a positive number indicating the number of |
| 694 | * failures due to API queue being full. |
| 695 | */ |
| 696 | int |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 697 | session_main_flush_enqueue_events (u8 transport_proto, u32 thread_index) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 698 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 699 | session_worker_t *wrk = session_main_get_worker (thread_index); |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 700 | session_t *s; |
Florin Coras | 2179513 | 2018-09-09 09:40:51 -0700 | [diff] [blame] | 701 | int i, errors = 0; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 702 | u32 *indices; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 703 | |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 704 | indices = wrk->session_to_enqueue[transport_proto]; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 705 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 706 | for (i = 0; i < vec_len (indices); i++) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 707 | { |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 708 | s = session_get_if_valid (indices[i], thread_index); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 709 | if (PREDICT_FALSE (!s)) |
| 710 | { |
| 711 | errors++; |
| 712 | continue; |
| 713 | } |
Florin Coras | 653e43f | 2019-03-04 10:56:23 -0800 | [diff] [blame] | 714 | |
Ryujiro Shibuya | d8f48e2 | 2020-01-22 12:11:42 +0000 | [diff] [blame] | 715 | session_fifo_tuning (s, s->rx_fifo, SESSION_FT_ACTION_ENQUEUED, |
| 716 | 0 /* TODO/not needed */ ); |
| 717 | |
Florin Coras | 653e43f | 2019-03-04 10:56:23 -0800 | [diff] [blame] | 718 | if (PREDICT_FALSE (session_enqueue_notify_inline (s))) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 719 | errors++; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 720 | } |
| 721 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 722 | vec_reset_length (indices); |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 723 | wrk->session_to_enqueue[transport_proto] = indices; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 724 | |
| 725 | return errors; |
| 726 | } |
| 727 | |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 728 | int |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 729 | session_main_flush_all_enqueue_events (u8 transport_proto) |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 730 | { |
| 731 | vlib_thread_main_t *vtm = vlib_get_thread_main (); |
| 732 | int i, errors = 0; |
| 733 | for (i = 0; i < 1 + vtm->n_threads; i++) |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 734 | errors += session_main_flush_enqueue_events (transport_proto, i); |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 735 | return errors; |
| 736 | } |
| 737 | |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 738 | static inline int |
Florin Coras | 00e01d3 | 2019-10-21 16:07:46 -0700 | [diff] [blame] | 739 | session_stream_connect_notify_inline (transport_connection_t * tc, |
| 740 | session_error_t err, |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 741 | session_state_t opened_state) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 742 | { |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 743 | u32 opaque = 0, new_ti, new_si; |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 744 | app_worker_t *app_wrk; |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 745 | session_t *s = 0; |
| 746 | u64 ho_handle; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 747 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 748 | /* |
| 749 | * Find connection handle and cleanup half-open table |
| 750 | */ |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 751 | ho_handle = session_lookup_half_open_handle (tc); |
| 752 | if (ho_handle == HALF_OPEN_LOOKUP_INVALID_VALUE) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 753 | { |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 754 | SESSION_DBG ("half-open was removed!"); |
Florin Coras | f03a59a | 2017-06-09 21:07:32 -0700 | [diff] [blame] | 755 | return -1; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 756 | } |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 757 | session_lookup_del_half_open (tc); |
Florin Coras | 4eeeaaf | 2017-09-05 14:03:37 -0400 | [diff] [blame] | 758 | |
Florin Coras | ab0289a | 2017-08-14 11:25:25 -0700 | [diff] [blame] | 759 | /* Get the app's index from the handle we stored when opening connection |
| 760 | * and the opaque (api_context for external apps) from transport session |
Florin Coras | 4eeeaaf | 2017-09-05 14:03:37 -0400 | [diff] [blame] | 761 | * index */ |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 762 | app_wrk = app_worker_get_if_valid (ho_handle >> 32); |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 763 | if (!app_wrk) |
Florin Coras | c87c91d | 2017-08-16 19:55:49 -0700 | [diff] [blame] | 764 | return -1; |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 765 | |
Florin Coras | ab0289a | 2017-08-14 11:25:25 -0700 | [diff] [blame] | 766 | opaque = tc->s_index; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 767 | |
Florin Coras | 00e01d3 | 2019-10-21 16:07:46 -0700 | [diff] [blame] | 768 | if (err) |
| 769 | return app_worker_connect_notify (app_wrk, s, err, opaque); |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 770 | |
| 771 | s = session_alloc_for_connection (tc); |
| 772 | s->session_state = SESSION_STATE_CONNECTING; |
| 773 | s->app_wrk_index = app_wrk->wrk_index; |
| 774 | new_si = s->session_index; |
| 775 | new_ti = s->thread_index; |
| 776 | |
Florin Coras | 00e01d3 | 2019-10-21 16:07:46 -0700 | [diff] [blame] | 777 | if ((err = app_worker_init_connected (app_wrk, s))) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 778 | { |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 779 | session_free (s); |
Florin Coras | 00e01d3 | 2019-10-21 16:07:46 -0700 | [diff] [blame] | 780 | app_worker_connect_notify (app_wrk, 0, err, opaque); |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 781 | return -1; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 782 | } |
| 783 | |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 784 | s = session_get (new_si, new_ti); |
| 785 | s->session_state = opened_state; |
| 786 | session_lookup_add_connection (tc, session_handle (s)); |
| 787 | |
Florin Coras | 00e01d3 | 2019-10-21 16:07:46 -0700 | [diff] [blame] | 788 | if (app_worker_connect_notify (app_wrk, s, SESSION_E_NONE, opaque)) |
Florin Coras | 6534b7a | 2017-07-18 05:38:03 -0400 | [diff] [blame] | 789 | { |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 790 | s = session_get (new_si, new_ti); |
| 791 | session_free_w_fifos (s); |
| 792 | return -1; |
Florin Coras | 6534b7a | 2017-07-18 05:38:03 -0400 | [diff] [blame] | 793 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 794 | |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 795 | return 0; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 796 | } |
| 797 | |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 798 | int |
Florin Coras | 00e01d3 | 2019-10-21 16:07:46 -0700 | [diff] [blame] | 799 | session_stream_connect_notify (transport_connection_t * tc, |
| 800 | session_error_t err) |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 801 | { |
Florin Coras | 00e01d3 | 2019-10-21 16:07:46 -0700 | [diff] [blame] | 802 | return session_stream_connect_notify_inline (tc, err, SESSION_STATE_READY); |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 803 | } |
| 804 | |
| 805 | int |
Florin Coras | 00e01d3 | 2019-10-21 16:07:46 -0700 | [diff] [blame] | 806 | session_ho_stream_connect_notify (transport_connection_t * tc, |
| 807 | session_error_t err) |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 808 | { |
Florin Coras | 00e01d3 | 2019-10-21 16:07:46 -0700 | [diff] [blame] | 809 | return session_stream_connect_notify_inline (tc, err, SESSION_STATE_OPENED); |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 810 | } |
| 811 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 812 | typedef struct _session_switch_pool_args |
| 813 | { |
| 814 | u32 session_index; |
| 815 | u32 thread_index; |
| 816 | u32 new_thread_index; |
| 817 | u32 new_session_index; |
| 818 | } session_switch_pool_args_t; |
| 819 | |
Florin Coras | 49568af | 2019-07-31 16:46:24 -0700 | [diff] [blame] | 820 | /** |
| 821 | * Notify old thread of the session pool switch |
| 822 | */ |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 823 | static void |
| 824 | session_switch_pool (void *cb_args) |
| 825 | { |
| 826 | session_switch_pool_args_t *args = (session_switch_pool_args_t *) cb_args; |
Florin Coras | 49568af | 2019-07-31 16:46:24 -0700 | [diff] [blame] | 827 | app_worker_t *app_wrk; |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 828 | session_t *s; |
Florin Coras | 49568af | 2019-07-31 16:46:24 -0700 | [diff] [blame] | 829 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 830 | ASSERT (args->thread_index == vlib_get_thread_index ()); |
| 831 | s = session_get (args->session_index, args->thread_index); |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 832 | s->tx_fifo->master_session_index = args->new_session_index; |
| 833 | s->tx_fifo->master_thread_index = args->new_thread_index; |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 834 | transport_cleanup (session_get_transport_proto (s), s->connection_index, |
| 835 | s->thread_index); |
Florin Coras | 49568af | 2019-07-31 16:46:24 -0700 | [diff] [blame] | 836 | |
| 837 | app_wrk = app_worker_get_if_valid (s->app_wrk_index); |
| 838 | if (app_wrk) |
| 839 | { |
| 840 | session_handle_t new_sh; |
| 841 | new_sh = session_make_handle (args->new_session_index, |
| 842 | args->new_thread_index); |
| 843 | app_worker_migrate_notify (app_wrk, s, new_sh); |
Aloys Augustin | b339233 | 2019-08-06 16:09:01 +0200 | [diff] [blame] | 844 | |
| 845 | /* Trigger app read on the new thread */ |
| 846 | session_enqueue_notify_thread (new_sh); |
Florin Coras | 49568af | 2019-07-31 16:46:24 -0700 | [diff] [blame] | 847 | } |
| 848 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 849 | session_free (s); |
| 850 | clib_mem_free (cb_args); |
| 851 | } |
| 852 | |
| 853 | /** |
| 854 | * Move dgram session to the right thread |
| 855 | */ |
| 856 | int |
| 857 | session_dgram_connect_notify (transport_connection_t * tc, |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 858 | u32 old_thread_index, session_t ** new_session) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 859 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 860 | session_t *new_s; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 861 | session_switch_pool_args_t *rpc_args; |
| 862 | |
| 863 | /* |
| 864 | * Clone half-open session to the right thread. |
| 865 | */ |
| 866 | new_s = session_clone_safe (tc->s_index, old_thread_index); |
| 867 | new_s->connection_index = tc->c_index; |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 868 | new_s->rx_fifo->master_session_index = new_s->session_index; |
| 869 | new_s->rx_fifo->master_thread_index = new_s->thread_index; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 870 | new_s->session_state = SESSION_STATE_READY; |
Nathan Skrzypczak | caa7acf | 2019-10-02 10:02:05 +0200 | [diff] [blame] | 871 | new_s->flags |= SESSION_F_IS_MIGRATING; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 872 | session_lookup_add_connection (tc, session_handle (new_s)); |
| 873 | |
| 874 | /* |
| 875 | * Ask thread owning the old session to clean it up and make us the tx |
| 876 | * fifo owner |
| 877 | */ |
| 878 | rpc_args = clib_mem_alloc (sizeof (*rpc_args)); |
| 879 | rpc_args->new_session_index = new_s->session_index; |
| 880 | rpc_args->new_thread_index = new_s->thread_index; |
| 881 | rpc_args->session_index = tc->s_index; |
| 882 | rpc_args->thread_index = old_thread_index; |
| 883 | session_send_rpc_evt_to_thread (rpc_args->thread_index, session_switch_pool, |
| 884 | rpc_args); |
| 885 | |
| 886 | tc->s_index = new_s->session_index; |
| 887 | new_s->connection_index = tc->c_index; |
| 888 | *new_session = new_s; |
| 889 | return 0; |
| 890 | } |
| 891 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 892 | /** |
| 893 | * Notification from transport that connection is being closed. |
| 894 | * |
| 895 | * A disconnect is sent to application but state is not removed. Once |
| 896 | * disconnect is acknowledged by application, session disconnect is called. |
| 897 | * Ultimately this leads to close being called on transport (passive close). |
| 898 | */ |
| 899 | void |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 900 | session_transport_closing_notify (transport_connection_t * tc) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 901 | { |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 902 | app_worker_t *app_wrk; |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 903 | session_t *s; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 904 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 905 | s = session_get (tc->s_index, tc->thread_index); |
Florin Coras | 400ded3 | 2018-10-03 01:00:57 -0700 | [diff] [blame] | 906 | if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSING) |
| 907 | return; |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 908 | s->session_state = SESSION_STATE_TRANSPORT_CLOSING; |
Florin Coras | bf7ce2c | 2019-03-06 14:44:42 -0800 | [diff] [blame] | 909 | app_wrk = app_worker_get (s->app_wrk_index); |
| 910 | app_worker_close_notify (app_wrk, s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 911 | } |
| 912 | |
| 913 | /** |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 914 | * Notification from transport that connection is being deleted |
| 915 | * |
Florin Coras | 4eeeaaf | 2017-09-05 14:03:37 -0400 | [diff] [blame] | 916 | * This removes the session if it is still valid. It should be called only on |
| 917 | * previously fully established sessions. For instance failed connects should |
| 918 | * call stream_session_connect_notify and indicate that the connect has |
| 919 | * failed. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 920 | */ |
| 921 | void |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 922 | session_transport_delete_notify (transport_connection_t * tc) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 923 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 924 | session_t *s; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 925 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 926 | /* App might've been removed already */ |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 927 | if (!(s = session_get_if_valid (tc->s_index, tc->thread_index))) |
Florin Coras | c87c91d | 2017-08-16 19:55:49 -0700 | [diff] [blame] | 928 | return; |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 929 | |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 930 | switch (s->session_state) |
| 931 | { |
Florin Coras | 222e1f41 | 2019-02-16 20:47:32 -0800 | [diff] [blame] | 932 | case SESSION_STATE_CREATED: |
| 933 | /* Session was created but accept notification was not yet sent to the |
| 934 | * app. Cleanup everything. */ |
| 935 | session_lookup_del_session (s); |
Zeyu Zhang | cbbc4a2 | 2019-10-12 14:21:59 +0800 | [diff] [blame] | 936 | segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo); |
| 937 | session_free (s); |
Florin Coras | 222e1f41 | 2019-02-16 20:47:32 -0800 | [diff] [blame] | 938 | break; |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 939 | case SESSION_STATE_ACCEPTING: |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 940 | case SESSION_STATE_TRANSPORT_CLOSING: |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 941 | case SESSION_STATE_CLOSING: |
Florin Coras | 5f06632 | 2019-07-22 19:03:03 -0700 | [diff] [blame] | 942 | case SESSION_STATE_TRANSPORT_CLOSED: |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 943 | /* If transport finishes or times out before we get a reply |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 944 | * from the app, mark transport as closed and wait for reply |
| 945 | * before removing the session. Cleanup session table in advance |
Florin Coras | a9d5bea | 2018-12-17 08:24:19 -0800 | [diff] [blame] | 946 | * because transport will soon be closed and closed sessions |
| 947 | * are assumed to have been removed from the lookup table */ |
| 948 | session_lookup_del_session (s); |
Florin Coras | 5f06632 | 2019-07-22 19:03:03 -0700 | [diff] [blame] | 949 | s->session_state = SESSION_STATE_TRANSPORT_DELETED; |
Florin Coras | 70f26d5 | 2019-07-08 11:47:18 -0700 | [diff] [blame] | 950 | session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT); |
| 951 | svm_fifo_dequeue_drop_all (s->tx_fifo); |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 952 | break; |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 953 | case SESSION_STATE_APP_CLOSED: |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 954 | /* Cleanup lookup table as transport needs to still be valid. |
| 955 | * Program transport close to ensure that all session events |
| 956 | * have been cleaned up. Once transport close is called, the |
| 957 | * session is just removed because both transport and app have |
| 958 | * confirmed the close*/ |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 959 | session_lookup_del_session (s); |
Florin Coras | 3b5e222 | 2019-10-25 16:23:39 -0700 | [diff] [blame] | 960 | s->session_state = SESSION_STATE_TRANSPORT_DELETED; |
Florin Coras | 70f26d5 | 2019-07-08 11:47:18 -0700 | [diff] [blame] | 961 | session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT); |
| 962 | svm_fifo_dequeue_drop_all (s->tx_fifo); |
Florin Coras | dfb3b87 | 2019-08-16 17:48:44 -0700 | [diff] [blame] | 963 | session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_CLOSE); |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 964 | break; |
Florin Coras | 5f06632 | 2019-07-22 19:03:03 -0700 | [diff] [blame] | 965 | case SESSION_STATE_TRANSPORT_DELETED: |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 966 | break; |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 967 | case SESSION_STATE_CLOSED: |
Florin Coras | 70f26d5 | 2019-07-08 11:47:18 -0700 | [diff] [blame] | 968 | session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT); |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 969 | session_delete (s); |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 970 | break; |
Florin Coras | c01d578 | 2018-10-17 14:53:11 -0700 | [diff] [blame] | 971 | default: |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 972 | clib_warning ("session state %u", s->session_state); |
Florin Coras | 70f26d5 | 2019-07-08 11:47:18 -0700 | [diff] [blame] | 973 | session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT); |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 974 | session_delete (s); |
Florin Coras | c01d578 | 2018-10-17 14:53:11 -0700 | [diff] [blame] | 975 | break; |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 976 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 977 | } |
| 978 | |
| 979 | /** |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 980 | * Notification from transport that it is closed |
Florin Coras | 54ddf43 | 2018-12-21 13:54:09 -0800 | [diff] [blame] | 981 | * |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 982 | * Should be called by transport, prior to calling delete notify, once it |
| 983 | * knows that no more data will be exchanged. This could serve as an |
| 984 | * early acknowledgment of an active close especially if transport delete |
| 985 | * can be delayed a long time, e.g., tcp time-wait. |
Florin Coras | 54ddf43 | 2018-12-21 13:54:09 -0800 | [diff] [blame] | 986 | */ |
| 987 | void |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 988 | session_transport_closed_notify (transport_connection_t * tc) |
Florin Coras | 54ddf43 | 2018-12-21 13:54:09 -0800 | [diff] [blame] | 989 | { |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 990 | app_worker_t *app_wrk; |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 991 | session_t *s; |
Florin Coras | 54ddf43 | 2018-12-21 13:54:09 -0800 | [diff] [blame] | 992 | |
| 993 | if (!(s = session_get_if_valid (tc->s_index, tc->thread_index))) |
| 994 | return; |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 995 | |
Florin Coras | 06a2eec | 2019-05-23 22:28:16 -0700 | [diff] [blame] | 996 | /* Transport thinks that app requested close but it actually didn't. |
| 997 | * Can happen for tcp if fin and rst are received in close succession. */ |
| 998 | if (s->session_state == SESSION_STATE_READY) |
| 999 | { |
| 1000 | session_transport_closing_notify (tc); |
| 1001 | svm_fifo_dequeue_drop_all (s->tx_fifo); |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 1002 | s->session_state = SESSION_STATE_TRANSPORT_CLOSED; |
Florin Coras | 06a2eec | 2019-05-23 22:28:16 -0700 | [diff] [blame] | 1003 | } |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 1004 | /* If app close has not been received or has not yet resulted in |
| 1005 | * a transport close, only mark the session transport as closed */ |
Florin Coras | 06a2eec | 2019-05-23 22:28:16 -0700 | [diff] [blame] | 1006 | else if (s->session_state <= SESSION_STATE_CLOSING) |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 1007 | { |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 1008 | s->session_state = SESSION_STATE_TRANSPORT_CLOSED; |
| 1009 | } |
Florin Coras | 5f06632 | 2019-07-22 19:03:03 -0700 | [diff] [blame] | 1010 | /* If app also closed, switch to closed */ |
| 1011 | else if (s->session_state == SESSION_STATE_APP_CLOSED) |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 1012 | s->session_state = SESSION_STATE_CLOSED; |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 1013 | |
| 1014 | app_wrk = app_worker_get_if_valid (s->app_wrk_index); |
| 1015 | if (app_wrk) |
| 1016 | app_worker_transport_closed_notify (app_wrk, s); |
Florin Coras | 54ddf43 | 2018-12-21 13:54:09 -0800 | [diff] [blame] | 1017 | } |
| 1018 | |
| 1019 | /** |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1020 | * Notify application that connection has been reset. |
| 1021 | */ |
| 1022 | void |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 1023 | session_transport_reset_notify (transport_connection_t * tc) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1024 | { |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1025 | app_worker_t *app_wrk; |
Florin Coras | 69b68ef | 2019-04-02 11:38:51 -0700 | [diff] [blame] | 1026 | session_t *s; |
| 1027 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1028 | s = session_get (tc->s_index, tc->thread_index); |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1029 | svm_fifo_dequeue_drop_all (s->tx_fifo); |
Florin Coras | 3c7d4f9 | 2018-12-14 11:28:43 -0800 | [diff] [blame] | 1030 | if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSING) |
| 1031 | return; |
| 1032 | s->session_state = SESSION_STATE_TRANSPORT_CLOSING; |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1033 | app_wrk = app_worker_get (s->app_wrk_index); |
Florin Coras | 69b68ef | 2019-04-02 11:38:51 -0700 | [diff] [blame] | 1034 | app_worker_reset_notify (app_wrk, s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1035 | } |
| 1036 | |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 1037 | int |
| 1038 | session_stream_accept_notify (transport_connection_t * tc) |
| 1039 | { |
| 1040 | app_worker_t *app_wrk; |
| 1041 | session_t *s; |
| 1042 | |
| 1043 | s = session_get (tc->s_index, tc->thread_index); |
| 1044 | app_wrk = app_worker_get_if_valid (s->app_wrk_index); |
| 1045 | if (!app_wrk) |
| 1046 | return -1; |
| 1047 | s->session_state = SESSION_STATE_ACCEPTING; |
Florin Coras | 4dc10a4 | 2020-02-11 05:31:49 +0000 | [diff] [blame] | 1048 | if (app_worker_accept_notify (app_wrk, s)) |
| 1049 | { |
| 1050 | /* On transport delete, no notifications should be sent. Unless, the |
| 1051 | * accept is retried and successful. */ |
| 1052 | s->session_state = SESSION_STATE_CREATED; |
| 1053 | return -1; |
| 1054 | } |
| 1055 | return 0; |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 1056 | } |
| 1057 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1058 | /** |
| 1059 | * Accept a stream session. Optionally ping the server by callback. |
| 1060 | */ |
| 1061 | int |
Florin Coras | c9940fc | 2019-02-05 20:55:11 -0800 | [diff] [blame] | 1062 | session_stream_accept (transport_connection_t * tc, u32 listener_index, |
Nathan Skrzypczak | 2f0f96b | 2019-06-13 10:14:28 +0200 | [diff] [blame] | 1063 | u32 thread_index, u8 notify) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1064 | { |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 1065 | session_t *s; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1066 | int rv; |
| 1067 | |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 1068 | s = session_alloc_for_connection (tc); |
Nathan Skrzypczak | 2f0f96b | 2019-06-13 10:14:28 +0200 | [diff] [blame] | 1069 | s->listener_handle = ((u64) thread_index << 32) | (u64) listener_index; |
Florin Coras | 222e1f41 | 2019-02-16 20:47:32 -0800 | [diff] [blame] | 1070 | s->session_state = SESSION_STATE_CREATED; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1071 | |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 1072 | if ((rv = app_worker_init_accepted (s))) |
| 1073 | return rv; |
| 1074 | |
| 1075 | session_lookup_add_connection (tc, session_handle (s)); |
| 1076 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1077 | /* Shoulder-tap the server */ |
| 1078 | if (notify) |
| 1079 | { |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 1080 | app_worker_t *app_wrk = app_worker_get (s->app_wrk_index); |
| 1081 | return app_worker_accept_notify (app_wrk, s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1082 | } |
| 1083 | |
| 1084 | return 0; |
| 1085 | } |
| 1086 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1087 | int |
Florin Coras | e759bb5 | 2020-04-08 01:55:39 +0000 | [diff] [blame] | 1088 | session_dgram_accept (transport_connection_t * tc, u32 listener_index, |
| 1089 | u32 thread_index) |
| 1090 | { |
| 1091 | app_worker_t *app_wrk; |
| 1092 | session_t *s; |
| 1093 | int rv; |
| 1094 | |
| 1095 | s = session_alloc_for_connection (tc); |
| 1096 | s->listener_handle = ((u64) thread_index << 32) | (u64) listener_index; |
| 1097 | |
| 1098 | if ((rv = app_worker_init_accepted (s))) |
| 1099 | { |
| 1100 | session_free (s); |
| 1101 | return rv; |
| 1102 | } |
| 1103 | |
| 1104 | app_wrk = app_worker_get (s->app_wrk_index); |
| 1105 | if ((rv = app_worker_accept_notify (app_wrk, s))) |
| 1106 | { |
| 1107 | session_free_w_fifos (s); |
| 1108 | return rv; |
| 1109 | } |
| 1110 | |
| 1111 | s->session_state = SESSION_STATE_READY; |
| 1112 | session_lookup_add_connection (tc, session_handle (s)); |
| 1113 | |
| 1114 | return 0; |
| 1115 | } |
| 1116 | |
| 1117 | int |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1118 | session_open_cl (u32 app_wrk_index, session_endpoint_t * rmt, u32 opaque) |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1119 | { |
| 1120 | transport_connection_t *tc; |
Florin Coras | 5665ced | 2018-10-25 18:03:45 -0700 | [diff] [blame] | 1121 | transport_endpoint_cfg_t *tep; |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1122 | app_worker_t *app_wrk; |
Aloys Augustin | 20ab31e | 2019-03-25 11:29:17 +0100 | [diff] [blame] | 1123 | session_handle_t sh; |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1124 | session_t *s; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1125 | int rv; |
| 1126 | |
Florin Coras | 5665ced | 2018-10-25 18:03:45 -0700 | [diff] [blame] | 1127 | tep = session_endpoint_to_transport_cfg (rmt); |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1128 | rv = transport_connect (rmt->transport_proto, tep); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1129 | if (rv < 0) |
| 1130 | { |
| 1131 | SESSION_DBG ("Transport failed to open connection."); |
Florin Coras | 57660d9 | 2020-04-04 22:45:34 +0000 | [diff] [blame] | 1132 | return rv; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1133 | } |
| 1134 | |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1135 | tc = transport_get_half_open (rmt->transport_proto, (u32) rv); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1136 | |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 1137 | /* For dgram type of service, allocate session and fifos now */ |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1138 | app_wrk = app_worker_get (app_wrk_index); |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 1139 | s = session_alloc_for_connection (tc); |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1140 | s->app_wrk_index = app_wrk->wrk_index; |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1141 | s->session_state = SESSION_STATE_OPENED; |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 1142 | if (app_worker_init_connected (app_wrk, s)) |
| 1143 | { |
| 1144 | session_free (s); |
| 1145 | return -1; |
| 1146 | } |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1147 | |
Aloys Augustin | 20ab31e | 2019-03-25 11:29:17 +0100 | [diff] [blame] | 1148 | sh = session_handle (s); |
| 1149 | session_lookup_add_connection (tc, sh); |
Florin Coras | 00e01d3 | 2019-10-21 16:07:46 -0700 | [diff] [blame] | 1150 | return app_worker_connect_notify (app_wrk, s, SESSION_E_NONE, opaque); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1151 | } |
| 1152 | |
| 1153 | int |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1154 | session_open_vc (u32 app_wrk_index, session_endpoint_t * rmt, u32 opaque) |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1155 | { |
| 1156 | transport_connection_t *tc; |
Florin Coras | 5665ced | 2018-10-25 18:03:45 -0700 | [diff] [blame] | 1157 | transport_endpoint_cfg_t *tep; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1158 | u64 handle; |
| 1159 | int rv; |
| 1160 | |
Florin Coras | 5665ced | 2018-10-25 18:03:45 -0700 | [diff] [blame] | 1161 | tep = session_endpoint_to_transport_cfg (rmt); |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1162 | rv = transport_connect (rmt->transport_proto, tep); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1163 | if (rv < 0) |
| 1164 | { |
| 1165 | SESSION_DBG ("Transport failed to open connection."); |
Florin Coras | 57660d9 | 2020-04-04 22:45:34 +0000 | [diff] [blame] | 1166 | return rv; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1167 | } |
| 1168 | |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1169 | tc = transport_get_half_open (rmt->transport_proto, (u32) rv); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1170 | |
| 1171 | /* If transport offers a stream service, only allocate session once the |
| 1172 | * connection has been established. |
| 1173 | * Add connection to half-open table and save app and tc index. The |
| 1174 | * latter is needed to help establish the connection while the former |
| 1175 | * is needed when the connect notify comes and we have to notify the |
| 1176 | * external app |
| 1177 | */ |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1178 | handle = (((u64) app_wrk_index) << 32) | (u64) tc->c_index; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1179 | session_lookup_add_half_open (tc, handle); |
| 1180 | |
| 1181 | /* Store api_context (opaque) for when the reply comes. Not the nicest |
| 1182 | * thing but better than allocating a separate half-open pool. |
| 1183 | */ |
| 1184 | tc->s_index = opaque; |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 1185 | if (transport_half_open_has_fifos (rmt->transport_proto)) |
| 1186 | return session_ho_stream_connect_notify (tc, 0 /* is_fail */ ); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1187 | return 0; |
| 1188 | } |
| 1189 | |
| 1190 | int |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1191 | session_open_app (u32 app_wrk_index, session_endpoint_t * rmt, u32 opaque) |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1192 | { |
Florin Coras | 5665ced | 2018-10-25 18:03:45 -0700 | [diff] [blame] | 1193 | session_endpoint_cfg_t *sep = (session_endpoint_cfg_t *) rmt; |
| 1194 | transport_endpoint_cfg_t *tep_cfg = session_endpoint_to_transport_cfg (sep); |
| 1195 | |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1196 | sep->app_wrk_index = app_wrk_index; |
Florin Coras | 8f89dd0 | 2018-03-05 16:53:07 -0800 | [diff] [blame] | 1197 | sep->opaque = opaque; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1198 | |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1199 | return transport_connect (rmt->transport_proto, tep_cfg); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1200 | } |
| 1201 | |
| 1202 | typedef int (*session_open_service_fn) (u32, session_endpoint_t *, u32); |
| 1203 | |
| 1204 | /* *INDENT-OFF* */ |
| 1205 | static session_open_service_fn session_open_srv_fns[TRANSPORT_N_SERVICES] = { |
| 1206 | session_open_vc, |
| 1207 | session_open_cl, |
| 1208 | session_open_app, |
| 1209 | }; |
| 1210 | /* *INDENT-ON* */ |
| 1211 | |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1212 | /** |
| 1213 | * Ask transport to open connection to remote transport endpoint. |
| 1214 | * |
| 1215 | * Stores handle for matching request with reply since the call can be |
| 1216 | * asynchronous. For instance, for TCP the 3-way handshake must complete |
| 1217 | * before reply comes. Session is only created once connection is established. |
| 1218 | * |
| 1219 | * @param app_index Index of the application requesting the connect |
| 1220 | * @param st Session type requested. |
| 1221 | * @param tep Remote transport endpoint |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1222 | * @param opaque Opaque data (typically, api_context) the application expects |
| 1223 | * on open completion. |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1224 | */ |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1225 | int |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1226 | session_open (u32 app_wrk_index, session_endpoint_t * rmt, u32 opaque) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1227 | { |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1228 | transport_service_type_t tst; |
| 1229 | tst = transport_protocol_service_type (rmt->transport_proto); |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1230 | return session_open_srv_fns[tst] (app_wrk_index, rmt, opaque); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1231 | } |
| 1232 | |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1233 | /** |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1234 | * Ask transport to listen on session endpoint. |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1235 | * |
| 1236 | * @param s Session for which listen will be called. Note that unlike |
| 1237 | * established sessions, listen sessions are not associated to a |
| 1238 | * thread. |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1239 | * @param sep Local endpoint to be listened on. |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1240 | */ |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1241 | int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1242 | session_listen (session_t * ls, session_endpoint_cfg_t * sep) |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1243 | { |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1244 | transport_endpoint_t *tep; |
Florin Coras | a8c3b86 | 2020-04-07 22:31:06 +0000 | [diff] [blame] | 1245 | int tc_index; |
| 1246 | u32 s_index; |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1247 | |
| 1248 | /* Transport bind/listen */ |
| 1249 | tep = session_endpoint_to_transport (sep); |
Florin Coras | 74cac88 | 2018-09-07 09:13:15 -0700 | [diff] [blame] | 1250 | s_index = ls->session_index; |
Florin Coras | d4295e6 | 2019-02-22 13:11:38 -0800 | [diff] [blame] | 1251 | tc_index = transport_start_listen (session_get_transport_proto (ls), |
| 1252 | s_index, tep); |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1253 | |
Florin Coras | a8c3b86 | 2020-04-07 22:31:06 +0000 | [diff] [blame] | 1254 | if (tc_index < 0) |
| 1255 | return tc_index; |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1256 | |
Florin Coras | d4295e6 | 2019-02-22 13:11:38 -0800 | [diff] [blame] | 1257 | /* Attach transport to session. Lookup tables are populated by the app |
| 1258 | * worker because local tables (for ct sessions) are not backed by a fib */ |
Florin Coras | 74cac88 | 2018-09-07 09:13:15 -0700 | [diff] [blame] | 1259 | ls = listen_session_get (s_index); |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1260 | ls->connection_index = tc_index; |
| 1261 | |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1262 | return 0; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1263 | } |
| 1264 | |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1265 | /** |
| 1266 | * Ask transport to stop listening on local transport endpoint. |
| 1267 | * |
| 1268 | * @param s Session to stop listening on. It must be in state LISTENING. |
| 1269 | */ |
| 1270 | int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1271 | session_stop_listen (session_t * s) |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1272 | { |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1273 | transport_proto_t tp = session_get_transport_proto (s); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1274 | transport_connection_t *tc; |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1275 | |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1276 | if (s->session_state != SESSION_STATE_LISTENING) |
Florin Coras | a8c3b86 | 2020-04-07 22:31:06 +0000 | [diff] [blame] | 1277 | return SESSION_E_NOLISTEN; |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1278 | |
| 1279 | tc = transport_get_listener (tp, s->connection_index); |
Florin Coras | a8c3b86 | 2020-04-07 22:31:06 +0000 | [diff] [blame] | 1280 | |
| 1281 | /* If no transport, assume everything was cleaned up already */ |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1282 | if (!tc) |
Florin Coras | a8c3b86 | 2020-04-07 22:31:06 +0000 | [diff] [blame] | 1283 | return SESSION_E_NONE; |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1284 | |
Nathan Skrzypczak | 2eed1a1 | 2019-07-04 14:26:21 +0200 | [diff] [blame] | 1285 | if (!(tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP)) |
| 1286 | session_lookup_del_connection (tc); |
Florin Coras | a8c3b86 | 2020-04-07 22:31:06 +0000 | [diff] [blame] | 1287 | |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1288 | transport_stop_listen (tp, s->connection_index); |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1289 | return 0; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1290 | } |
| 1291 | |
| 1292 | /** |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 1293 | * Initialize session closing procedure. |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1294 | * |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 1295 | * Request is always sent to session node to ensure that all outstanding |
| 1296 | * requests are served before transport is notified. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1297 | */ |
| 1298 | void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1299 | session_close (session_t * s) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1300 | { |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1301 | if (!s) |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 1302 | return; |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1303 | |
| 1304 | if (s->session_state >= SESSION_STATE_CLOSING) |
| 1305 | { |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 1306 | /* Session will only be removed once both app and transport |
| 1307 | * acknowledge the close */ |
Florin Coras | 5f06632 | 2019-07-22 19:03:03 -0700 | [diff] [blame] | 1308 | if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED |
| 1309 | || s->session_state == SESSION_STATE_TRANSPORT_DELETED) |
Florin Coras | dfb3b87 | 2019-08-16 17:48:44 -0700 | [diff] [blame] | 1310 | session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_CLOSE); |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1311 | return; |
| 1312 | } |
| 1313 | |
Florin Coras | b2371c2 | 2018-05-31 17:14:10 -0700 | [diff] [blame] | 1314 | s->session_state = SESSION_STATE_CLOSING; |
Florin Coras | dfb3b87 | 2019-08-16 17:48:44 -0700 | [diff] [blame] | 1315 | session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_CLOSE); |
| 1316 | } |
| 1317 | |
| 1318 | /** |
| 1319 | * Force a close without waiting for data to be flushed |
| 1320 | */ |
| 1321 | void |
| 1322 | session_reset (session_t * s) |
| 1323 | { |
| 1324 | if (s->session_state >= SESSION_STATE_CLOSING) |
| 1325 | return; |
| 1326 | /* Drop all outstanding tx data */ |
| 1327 | svm_fifo_dequeue_drop_all (s->tx_fifo); |
| 1328 | s->session_state = SESSION_STATE_CLOSING; |
| 1329 | session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_RESET); |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 1330 | } |
| 1331 | |
| 1332 | /** |
| 1333 | * Notify transport the session can be disconnected. This should eventually |
| 1334 | * result in a delete notification that allows us to cleanup session state. |
| 1335 | * Called for both active/passive disconnects. |
| 1336 | * |
| 1337 | * Must be called from the session's thread. |
| 1338 | */ |
| 1339 | void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1340 | session_transport_close (session_t * s) |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 1341 | { |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 1342 | if (s->session_state >= SESSION_STATE_APP_CLOSED) |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 1343 | { |
Florin Coras | 5f06632 | 2019-07-22 19:03:03 -0700 | [diff] [blame] | 1344 | if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED) |
| 1345 | s->session_state = SESSION_STATE_CLOSED; |
| 1346 | /* If transport is already deleted, just free the session */ |
| 1347 | else if (s->session_state >= SESSION_STATE_TRANSPORT_DELETED) |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 1348 | session_free_w_fifos (s); |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 1349 | return; |
| 1350 | } |
Florin Coras | 78cc4b0 | 2018-12-20 18:24:49 -0800 | [diff] [blame] | 1351 | |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 1352 | /* If the tx queue wasn't drained, the transport can continue to try |
| 1353 | * sending the outstanding data (in closed state it cannot). It MUST however |
| 1354 | * at one point, either after sending everything or after a timeout, call |
| 1355 | * delete notify. This will finally lead to the complete cleanup of the |
| 1356 | * session. |
Florin Coras | 78cc4b0 | 2018-12-20 18:24:49 -0800 | [diff] [blame] | 1357 | */ |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 1358 | s->session_state = SESSION_STATE_APP_CLOSED; |
Florin Coras | 78cc4b0 | 2018-12-20 18:24:49 -0800 | [diff] [blame] | 1359 | |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1360 | transport_close (session_get_transport_proto (s), s->connection_index, |
| 1361 | s->thread_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1362 | } |
| 1363 | |
| 1364 | /** |
Florin Coras | dfb3b87 | 2019-08-16 17:48:44 -0700 | [diff] [blame] | 1365 | * Force transport close |
| 1366 | */ |
| 1367 | void |
| 1368 | session_transport_reset (session_t * s) |
| 1369 | { |
| 1370 | if (s->session_state >= SESSION_STATE_APP_CLOSED) |
| 1371 | { |
| 1372 | if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED) |
| 1373 | s->session_state = SESSION_STATE_CLOSED; |
| 1374 | else if (s->session_state >= SESSION_STATE_TRANSPORT_DELETED) |
| 1375 | session_free_w_fifos (s); |
| 1376 | return; |
| 1377 | } |
| 1378 | |
| 1379 | s->session_state = SESSION_STATE_APP_CLOSED; |
| 1380 | transport_reset (session_get_transport_proto (s), s->connection_index, |
| 1381 | s->thread_index); |
| 1382 | } |
| 1383 | |
| 1384 | /** |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1385 | * Cleanup transport and session state. |
Florin Coras | d79b41e | 2017-03-04 05:37:52 -0800 | [diff] [blame] | 1386 | * |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1387 | * Notify transport of the cleanup and free the session. This should |
| 1388 | * be called only if transport reported some error and is already |
| 1389 | * closed. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1390 | */ |
| 1391 | void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1392 | session_transport_cleanup (session_t * s) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1393 | { |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1394 | /* Delete from main lookup table before we axe the the transport */ |
| 1395 | session_lookup_del_session (s); |
Florin Coras | 5afea12 | 2019-10-28 08:46:37 -0700 | [diff] [blame] | 1396 | if (s->session_state != SESSION_STATE_TRANSPORT_DELETED) |
| 1397 | transport_cleanup (session_get_transport_proto (s), s->connection_index, |
| 1398 | s->thread_index); |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1399 | /* Since we called cleanup, no delete notification will come. So, make |
| 1400 | * sure the session is properly freed. */ |
Florin Coras | d3955fb | 2019-11-29 09:31:47 -0800 | [diff] [blame] | 1401 | segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo); |
| 1402 | session_free (s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1403 | } |
| 1404 | |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1405 | /** |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1406 | * Allocate event queues in the shared-memory segment |
| 1407 | * |
| 1408 | * That can either be a newly created memfd segment, that will need to be |
| 1409 | * mapped by all stack users, or the binary api's svm region. The latter is |
| 1410 | * assumed to be already mapped. NOTE that this assumption DOES NOT hold if |
| 1411 | * api clients bootstrap shm api over sockets (i.e. use memfd segments) and |
| 1412 | * vpp uses api svm region for event queues. |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1413 | */ |
| 1414 | void |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1415 | session_vpp_event_queues_allocate (session_main_t * smm) |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1416 | { |
Florin Coras | 52207f1 | 2018-07-12 14:48:06 -0700 | [diff] [blame] | 1417 | u32 evt_q_length = 2048, evt_size = sizeof (session_event_t); |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1418 | ssvm_private_t *eqs = &smm->evt_qs_segment; |
Florin Coras | b4c1491 | 2019-02-09 13:51:25 -0800 | [diff] [blame] | 1419 | uword eqs_size = 64 << 20; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1420 | pid_t vpp_pid = getpid (); |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1421 | void *oldheap; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1422 | int i; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1423 | |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1424 | if (smm->configured_event_queue_length) |
| 1425 | evt_q_length = smm->configured_event_queue_length; |
| 1426 | |
| 1427 | if (smm->evt_qs_use_memfd_seg) |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1428 | { |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1429 | if (smm->evt_qs_segment_size) |
| 1430 | eqs_size = smm->evt_qs_segment_size; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1431 | |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1432 | eqs->ssvm_size = eqs_size; |
| 1433 | eqs->i_am_master = 1; |
| 1434 | eqs->my_pid = vpp_pid; |
| 1435 | eqs->name = format (0, "%s%c", "evt-qs-segment", 0); |
| 1436 | eqs->requested_va = smm->session_baseva; |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1437 | |
Florin Coras | 95e0ce0 | 2018-07-05 23:44:23 -0700 | [diff] [blame] | 1438 | if (ssvm_master_init (eqs, SSVM_SEGMENT_MEMFD)) |
| 1439 | { |
| 1440 | clib_warning ("failed to initialize queue segment"); |
| 1441 | return; |
| 1442 | } |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1443 | } |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1444 | |
| 1445 | if (smm->evt_qs_use_memfd_seg) |
| 1446 | oldheap = ssvm_push_heap (eqs->sh); |
| 1447 | else |
Nathan Skrzypczak | 0aa4013 | 2019-11-25 16:29:38 +0100 | [diff] [blame] | 1448 | oldheap = vl_msg_push_heap (); |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1449 | |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1450 | for (i = 0; i < vec_len (smm->wrk); i++) |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1451 | { |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 1452 | svm_msg_q_cfg_t _cfg, *cfg = &_cfg; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 1453 | svm_msg_q_ring_cfg_t rc[SESSION_MQ_N_RINGS] = { |
| 1454 | {evt_q_length, evt_size, 0} |
| 1455 | , |
Florin Coras | b4c1491 | 2019-02-09 13:51:25 -0800 | [diff] [blame] | 1456 | {evt_q_length >> 1, 256, 0} |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 1457 | }; |
| 1458 | cfg->consumer_pid = 0; |
| 1459 | cfg->n_rings = 2; |
| 1460 | cfg->q_nitems = evt_q_length; |
| 1461 | cfg->ring_cfgs = rc; |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1462 | smm->wrk[i].vpp_event_queue = svm_msg_q_alloc (cfg); |
Florin Coras | 9936831 | 2018-08-02 10:45:44 -0700 | [diff] [blame] | 1463 | if (smm->evt_qs_use_memfd_seg) |
| 1464 | { |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1465 | if (svm_msg_q_alloc_consumer_eventfd (smm->wrk[i].vpp_event_queue)) |
Florin Coras | 9936831 | 2018-08-02 10:45:44 -0700 | [diff] [blame] | 1466 | clib_warning ("eventfd returned"); |
| 1467 | } |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1468 | } |
| 1469 | |
| 1470 | if (smm->evt_qs_use_memfd_seg) |
| 1471 | ssvm_pop_heap (oldheap); |
| 1472 | else |
Nathan Skrzypczak | 0aa4013 | 2019-11-25 16:29:38 +0100 | [diff] [blame] | 1473 | vl_msg_pop_heap (oldheap); |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1474 | } |
| 1475 | |
| 1476 | ssvm_private_t * |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1477 | session_main_get_evt_q_segment (void) |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1478 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1479 | session_main_t *smm = &session_main; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1480 | if (smm->evt_qs_use_memfd_seg) |
| 1481 | return &smm->evt_qs_segment; |
| 1482 | return 0; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1483 | } |
| 1484 | |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1485 | u64 |
| 1486 | session_segment_handle (session_t * s) |
| 1487 | { |
| 1488 | svm_fifo_t *f; |
| 1489 | |
Aloys Augustin | cdb7170 | 2019-04-08 17:54:39 +0200 | [diff] [blame] | 1490 | if (!s->rx_fifo) |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1491 | return SESSION_INVALID_HANDLE; |
| 1492 | |
| 1493 | f = s->rx_fifo; |
| 1494 | return segment_manager_make_segment_handle (f->segment_manager, |
| 1495 | f->segment_index); |
| 1496 | } |
| 1497 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1498 | /* *INDENT-OFF* */ |
| 1499 | static session_fifo_rx_fn *session_tx_fns[TRANSPORT_TX_N_FNS] = { |
| 1500 | session_tx_fifo_peek_and_snd, |
| 1501 | session_tx_fifo_dequeue_and_snd, |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1502 | session_tx_fifo_dequeue_internal, |
| 1503 | session_tx_fifo_dequeue_and_snd |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1504 | }; |
| 1505 | /* *INDENT-ON* */ |
| 1506 | |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1507 | void |
| 1508 | session_register_transport (transport_proto_t transport_proto, |
| 1509 | const transport_proto_vft_t * vft, u8 is_ip4, |
| 1510 | u32 output_node) |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1511 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1512 | session_main_t *smm = &session_main; |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1513 | session_type_t session_type; |
| 1514 | u32 next_index = ~0; |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1515 | |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1516 | session_type = session_type_from_proto_and_ip (transport_proto, is_ip4); |
| 1517 | |
| 1518 | vec_validate (smm->session_type_to_next, session_type); |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1519 | vec_validate (smm->session_tx_fns, session_type); |
| 1520 | |
| 1521 | /* *INDENT-OFF* */ |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1522 | if (output_node != ~0) |
| 1523 | { |
| 1524 | foreach_vlib_main (({ |
| 1525 | next_index = vlib_node_add_next (this_vlib_main, |
| 1526 | session_queue_node.index, |
| 1527 | output_node); |
| 1528 | })); |
| 1529 | } |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1530 | /* *INDENT-ON* */ |
| 1531 | |
| 1532 | smm->session_type_to_next[session_type] = next_index; |
Nathan Skrzypczak | e971bc9 | 2019-06-19 13:42:37 +0200 | [diff] [blame] | 1533 | smm->session_tx_fns[session_type] = |
| 1534 | session_tx_fns[vft->transport_options.tx_type]; |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1535 | } |
| 1536 | |
Florin Coras | 07063b8 | 2020-03-13 04:44:51 +0000 | [diff] [blame] | 1537 | transport_proto_t |
| 1538 | session_add_transport_proto (void) |
| 1539 | { |
| 1540 | session_main_t *smm = &session_main; |
| 1541 | session_worker_t *wrk; |
| 1542 | u32 thread; |
| 1543 | |
| 1544 | smm->last_transport_proto_type += 1; |
| 1545 | |
| 1546 | for (thread = 0; thread < vec_len (smm->wrk); thread++) |
| 1547 | { |
| 1548 | wrk = session_main_get_worker (thread); |
| 1549 | vec_validate (wrk->session_to_enqueue, smm->last_transport_proto_type); |
| 1550 | } |
| 1551 | |
| 1552 | return smm->last_transport_proto_type; |
| 1553 | } |
| 1554 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1555 | transport_connection_t * |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1556 | session_get_transport (session_t * s) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1557 | { |
Florin Coras | ade70e4 | 2017-10-14 18:56:41 -0700 | [diff] [blame] | 1558 | if (s->session_state != SESSION_STATE_LISTENING) |
Florin Coras | 4edc37e | 2019-02-04 23:01:34 -0800 | [diff] [blame] | 1559 | return transport_get_connection (session_get_transport_proto (s), |
| 1560 | s->connection_index, s->thread_index); |
| 1561 | else |
| 1562 | return transport_get_listener (session_get_transport_proto (s), |
| 1563 | s->connection_index); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1564 | } |
| 1565 | |
Aloys Augustin | cdb7170 | 2019-04-08 17:54:39 +0200 | [diff] [blame] | 1566 | void |
Florin Coras | 09d18c2 | 2019-04-24 11:10:02 -0700 | [diff] [blame] | 1567 | session_get_endpoint (session_t * s, transport_endpoint_t * tep, u8 is_lcl) |
Aloys Augustin | cdb7170 | 2019-04-08 17:54:39 +0200 | [diff] [blame] | 1568 | { |
| 1569 | if (s->session_state != SESSION_STATE_LISTENING) |
| 1570 | return transport_get_endpoint (session_get_transport_proto (s), |
Florin Coras | 09d18c2 | 2019-04-24 11:10:02 -0700 | [diff] [blame] | 1571 | s->connection_index, s->thread_index, tep, |
| 1572 | is_lcl); |
Aloys Augustin | cdb7170 | 2019-04-08 17:54:39 +0200 | [diff] [blame] | 1573 | else |
| 1574 | return transport_get_listener_endpoint (session_get_transport_proto (s), |
Florin Coras | 09d18c2 | 2019-04-24 11:10:02 -0700 | [diff] [blame] | 1575 | s->connection_index, tep, is_lcl); |
Aloys Augustin | cdb7170 | 2019-04-08 17:54:39 +0200 | [diff] [blame] | 1576 | } |
| 1577 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1578 | transport_connection_t * |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1579 | listen_session_get_transport (session_t * s) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1580 | { |
Florin Coras | 4edc37e | 2019-02-04 23:01:34 -0800 | [diff] [blame] | 1581 | return transport_get_listener (session_get_transport_proto (s), |
| 1582 | s->connection_index); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1583 | } |
| 1584 | |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 1585 | void |
Florin Coras | 5484daa | 2020-03-27 23:55:06 +0000 | [diff] [blame] | 1586 | session_queue_run_on_main_thread (vlib_main_t * vm) |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 1587 | { |
| 1588 | ASSERT (vlib_get_thread_index () == 0); |
| 1589 | vlib_process_signal_event_mt (vm, session_queue_process_node.index, |
Florin Coras | 5484daa | 2020-03-27 23:55:06 +0000 | [diff] [blame] | 1590 | SESSION_Q_PROCESS_RUN_ON_MAIN, 0); |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 1591 | } |
| 1592 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1593 | static clib_error_t * |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1594 | session_manager_main_enable (vlib_main_t * vm) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1595 | { |
Florin Coras | a332c46 | 2018-01-31 06:52:17 -0800 | [diff] [blame] | 1596 | segment_manager_main_init_args_t _sm_args = { 0 }, *sm_args = &_sm_args; |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1597 | session_main_t *smm = &session_main; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1598 | vlib_thread_main_t *vtm = vlib_get_thread_main (); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1599 | u32 num_threads, preallocated_sessions_per_worker; |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1600 | session_worker_t *wrk; |
Florin Coras | d5c604d | 2019-03-18 09:06:35 -0700 | [diff] [blame] | 1601 | int i; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1602 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1603 | num_threads = 1 /* main thread */ + vtm->n_threads; |
| 1604 | |
| 1605 | if (num_threads < 1) |
| 1606 | return clib_error_return (0, "n_thread_stacks not set"); |
| 1607 | |
Florin Coras | 5f56d73 | 2018-10-30 10:21:59 -0700 | [diff] [blame] | 1608 | /* Allocate cache line aligned worker contexts */ |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1609 | vec_validate_aligned (smm->wrk, num_threads - 1, CLIB_CACHE_LINE_BYTES); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1610 | |
Dave Barach | acd2a6a | 2017-05-16 17:41:34 -0400 | [diff] [blame] | 1611 | for (i = 0; i < num_threads; i++) |
| 1612 | { |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1613 | wrk = &smm->wrk[i]; |
Florin Coras | b0ffbee | 2019-07-21 19:23:46 -0700 | [diff] [blame] | 1614 | wrk->ctrl_head = clib_llist_make_head (wrk->event_elts, evt_list); |
Florin Coras | 2062ec0 | 2019-07-15 13:15:18 -0700 | [diff] [blame] | 1615 | wrk->new_head = clib_llist_make_head (wrk->event_elts, evt_list); |
Florin Coras | 60183db | 2019-07-20 15:53:16 -0700 | [diff] [blame] | 1616 | wrk->old_head = clib_llist_make_head (wrk->event_elts, evt_list); |
Florin Coras | 60183db | 2019-07-20 15:53:16 -0700 | [diff] [blame] | 1617 | wrk->vm = vlib_mains[i]; |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1618 | wrk->last_vlib_time = vlib_time_now (vlib_mains[i]); |
Florin Coras | a8e71c8 | 2019-10-22 19:01:39 -0700 | [diff] [blame] | 1619 | wrk->last_vlib_us_time = wrk->last_vlib_time * CLIB_US_TIME_FREQ; |
Florin Coras | 07063b8 | 2020-03-13 04:44:51 +0000 | [diff] [blame] | 1620 | vec_validate (wrk->session_to_enqueue, smm->last_transport_proto_type); |
Florin Coras | d67f112 | 2018-05-21 17:47:40 -0700 | [diff] [blame] | 1621 | |
Florin Coras | 29ca16f | 2017-11-02 18:14:17 -0400 | [diff] [blame] | 1622 | if (num_threads > 1) |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1623 | clib_rwlock_init (&smm->wrk[i].peekers_rw_locks); |
Dave Barach | acd2a6a | 2017-05-16 17:41:34 -0400 | [diff] [blame] | 1624 | } |
| 1625 | |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1626 | /* Allocate vpp event queues segment and queue */ |
| 1627 | session_vpp_event_queues_allocate (smm); |
| 1628 | |
| 1629 | /* Initialize fifo segment main baseva and timeout */ |
Florin Coras | a332c46 | 2018-01-31 06:52:17 -0800 | [diff] [blame] | 1630 | sm_args->baseva = smm->session_baseva + smm->evt_qs_segment_size; |
| 1631 | sm_args->size = smm->session_va_space_size; |
| 1632 | segment_manager_main_init (sm_args); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1633 | |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1634 | /* Preallocate sessions */ |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1635 | if (smm->preallocated_sessions) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1636 | { |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1637 | if (num_threads == 1) |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1638 | { |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1639 | pool_init_fixed (smm->wrk[0].sessions, smm->preallocated_sessions); |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1640 | } |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1641 | else |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1642 | { |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1643 | int j; |
| 1644 | preallocated_sessions_per_worker = |
| 1645 | (1.1 * (f64) smm->preallocated_sessions / |
| 1646 | (f64) (num_threads - 1)); |
| 1647 | |
| 1648 | for (j = 1; j < num_threads; j++) |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1649 | { |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1650 | pool_init_fixed (smm->wrk[j].sessions, |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1651 | preallocated_sessions_per_worker); |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1652 | } |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1653 | } |
| 1654 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1655 | |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 1656 | session_lookup_init (); |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1657 | app_namespaces_init (); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1658 | transport_init (); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1659 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1660 | smm->is_enabled = 1; |
| 1661 | |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1662 | /* Enable transports */ |
| 1663 | transport_enable_disable (vm, 1); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1664 | return 0; |
| 1665 | } |
| 1666 | |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1667 | void |
| 1668 | session_node_enable_disable (u8 is_en) |
| 1669 | { |
| 1670 | u8 state = is_en ? VLIB_NODE_STATE_POLLING : VLIB_NODE_STATE_DISABLED; |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 1671 | vlib_thread_main_t *vtm = vlib_get_thread_main (); |
| 1672 | u8 have_workers = vtm->n_threads != 0; |
| 1673 | |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1674 | /* *INDENT-OFF* */ |
| 1675 | foreach_vlib_main (({ |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 1676 | if (have_workers && ii == 0) |
| 1677 | { |
| 1678 | vlib_node_set_state (this_vlib_main, session_queue_process_node.index, |
| 1679 | state); |
| 1680 | if (is_en) |
| 1681 | { |
| 1682 | vlib_node_t *n = vlib_get_node (this_vlib_main, |
| 1683 | session_queue_process_node.index); |
| 1684 | vlib_start_process (this_vlib_main, n->runtime_index); |
| 1685 | } |
| 1686 | else |
| 1687 | { |
| 1688 | vlib_process_signal_event_mt (this_vlib_main, |
| 1689 | session_queue_process_node.index, |
| 1690 | SESSION_Q_PROCESS_STOP, 0); |
| 1691 | } |
| 1692 | |
| 1693 | continue; |
| 1694 | } |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1695 | vlib_node_set_state (this_vlib_main, session_queue_node.index, |
| 1696 | state); |
| 1697 | })); |
| 1698 | /* *INDENT-ON* */ |
| 1699 | } |
| 1700 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1701 | clib_error_t * |
| 1702 | vnet_session_enable_disable (vlib_main_t * vm, u8 is_en) |
| 1703 | { |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1704 | clib_error_t *error = 0; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1705 | if (is_en) |
| 1706 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1707 | if (session_main.is_enabled) |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1708 | return 0; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1709 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1710 | error = session_manager_main_enable (vm); |
Vladimir Kropylev | a2e4451 | 2019-07-16 21:32:41 +0300 | [diff] [blame] | 1711 | session_node_enable_disable (is_en); |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1712 | } |
| 1713 | else |
| 1714 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1715 | session_main.is_enabled = 0; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1716 | session_node_enable_disable (is_en); |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1717 | } |
| 1718 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1719 | return error; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1720 | } |
| 1721 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1722 | clib_error_t * |
Florin Coras | e33c002 | 2020-04-03 17:23:42 +0000 | [diff] [blame] | 1723 | session_main_init (vlib_main_t * vm) |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1724 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1725 | session_main_t *smm = &session_main; |
Florin Coras | e33c002 | 2020-04-03 17:23:42 +0000 | [diff] [blame] | 1726 | |
| 1727 | smm->is_enabled = 0; |
| 1728 | smm->session_enable_asap = 0; |
David Johnson | d9818dd | 2018-12-14 14:53:41 -0500 | [diff] [blame] | 1729 | smm->session_baseva = HIGH_SEGMENT_BASEVA; |
Florin Coras | e33c002 | 2020-04-03 17:23:42 +0000 | [diff] [blame] | 1730 | |
David Johnson | d9818dd | 2018-12-14 14:53:41 -0500 | [diff] [blame] | 1731 | #if (HIGH_SEGMENT_BASEVA > (4ULL << 30)) |
| 1732 | smm->session_va_space_size = 128ULL << 30; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1733 | smm->evt_qs_segment_size = 64 << 20; |
David Johnson | d9818dd | 2018-12-14 14:53:41 -0500 | [diff] [blame] | 1734 | #else |
| 1735 | smm->session_va_space_size = 128 << 20; |
| 1736 | smm->evt_qs_segment_size = 1 << 20; |
| 1737 | #endif |
Florin Coras | e33c002 | 2020-04-03 17:23:42 +0000 | [diff] [blame] | 1738 | |
| 1739 | smm->last_transport_proto_type = TRANSPORT_PROTO_QUIC; |
| 1740 | |
Nathan Skrzypczak | 31bd035 | 2019-11-07 17:55:01 +0100 | [diff] [blame] | 1741 | return 0; |
| 1742 | } |
| 1743 | |
| 1744 | static clib_error_t * |
Florin Coras | e33c002 | 2020-04-03 17:23:42 +0000 | [diff] [blame] | 1745 | session_main_loop_init (vlib_main_t * vm) |
Nathan Skrzypczak | 31bd035 | 2019-11-07 17:55:01 +0100 | [diff] [blame] | 1746 | { |
| 1747 | session_main_t *smm = &session_main; |
| 1748 | if (smm->session_enable_asap) |
| 1749 | { |
| 1750 | vlib_worker_thread_barrier_sync (vm); |
| 1751 | vnet_session_enable_disable (vm, 1 /* is_en */ ); |
| 1752 | vlib_worker_thread_barrier_release (vm); |
| 1753 | } |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1754 | return 0; |
| 1755 | } |
| 1756 | |
Florin Coras | e33c002 | 2020-04-03 17:23:42 +0000 | [diff] [blame] | 1757 | VLIB_INIT_FUNCTION (session_main_init); |
| 1758 | VLIB_MAIN_LOOP_ENTER_FUNCTION (session_main_loop_init); |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1759 | |
| 1760 | static clib_error_t * |
| 1761 | session_config_fn (vlib_main_t * vm, unformat_input_t * input) |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1762 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1763 | session_main_t *smm = &session_main; |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1764 | u32 nitems; |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1765 | uword tmp; |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1766 | |
| 1767 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 1768 | { |
| 1769 | if (unformat (input, "event-queue-length %d", &nitems)) |
| 1770 | { |
| 1771 | if (nitems >= 2048) |
| 1772 | smm->configured_event_queue_length = nitems; |
| 1773 | else |
| 1774 | clib_warning ("event queue length %d too small, ignored", nitems); |
| 1775 | } |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1776 | else if (unformat (input, "preallocated-sessions %d", |
| 1777 | &smm->preallocated_sessions)) |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1778 | ; |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1779 | else if (unformat (input, "v4-session-table-buckets %d", |
| 1780 | &smm->configured_v4_session_table_buckets)) |
| 1781 | ; |
| 1782 | else if (unformat (input, "v4-halfopen-table-buckets %d", |
| 1783 | &smm->configured_v4_halfopen_table_buckets)) |
| 1784 | ; |
| 1785 | else if (unformat (input, "v6-session-table-buckets %d", |
| 1786 | &smm->configured_v6_session_table_buckets)) |
| 1787 | ; |
| 1788 | else if (unformat (input, "v6-halfopen-table-buckets %d", |
| 1789 | &smm->configured_v6_halfopen_table_buckets)) |
| 1790 | ; |
| 1791 | else if (unformat (input, "v4-session-table-memory %U", |
| 1792 | unformat_memory_size, &tmp)) |
| 1793 | { |
| 1794 | if (tmp >= 0x100000000) |
| 1795 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1796 | tmp, tmp); |
| 1797 | smm->configured_v4_session_table_memory = tmp; |
| 1798 | } |
| 1799 | else if (unformat (input, "v4-halfopen-table-memory %U", |
| 1800 | unformat_memory_size, &tmp)) |
| 1801 | { |
| 1802 | if (tmp >= 0x100000000) |
| 1803 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1804 | tmp, tmp); |
| 1805 | smm->configured_v4_halfopen_table_memory = tmp; |
| 1806 | } |
| 1807 | else if (unformat (input, "v6-session-table-memory %U", |
| 1808 | unformat_memory_size, &tmp)) |
| 1809 | { |
| 1810 | if (tmp >= 0x100000000) |
| 1811 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1812 | tmp, tmp); |
| 1813 | smm->configured_v6_session_table_memory = tmp; |
| 1814 | } |
| 1815 | else if (unformat (input, "v6-halfopen-table-memory %U", |
| 1816 | unformat_memory_size, &tmp)) |
| 1817 | { |
| 1818 | if (tmp >= 0x100000000) |
| 1819 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1820 | tmp, tmp); |
| 1821 | smm->configured_v6_halfopen_table_memory = tmp; |
| 1822 | } |
Florin Coras | 93e6580 | 2017-11-29 00:07:11 -0500 | [diff] [blame] | 1823 | else if (unformat (input, "local-endpoints-table-memory %U", |
| 1824 | unformat_memory_size, &tmp)) |
| 1825 | { |
| 1826 | if (tmp >= 0x100000000) |
| 1827 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1828 | tmp, tmp); |
| 1829 | smm->local_endpoints_table_memory = tmp; |
| 1830 | } |
| 1831 | else if (unformat (input, "local-endpoints-table-buckets %d", |
| 1832 | &smm->local_endpoints_table_buckets)) |
| 1833 | ; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1834 | else if (unformat (input, "evt_qs_memfd_seg")) |
| 1835 | smm->evt_qs_use_memfd_seg = 1; |
Florin Coras | b4c1491 | 2019-02-09 13:51:25 -0800 | [diff] [blame] | 1836 | else if (unformat (input, "evt_qs_seg_size %U", unformat_memory_size, |
| 1837 | &smm->evt_qs_segment_size)) |
| 1838 | ; |
Nathan Skrzypczak | 1292d19 | 2019-09-13 15:44:54 +0200 | [diff] [blame] | 1839 | else if (unformat (input, "enable")) |
Nathan Skrzypczak | 31bd035 | 2019-11-07 17:55:01 +0100 | [diff] [blame] | 1840 | smm->session_enable_asap = 1; |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1841 | else |
| 1842 | return clib_error_return (0, "unknown input `%U'", |
| 1843 | format_unformat_error, input); |
| 1844 | } |
| 1845 | return 0; |
| 1846 | } |
| 1847 | |
| 1848 | VLIB_CONFIG_FUNCTION (session_config_fn, "session"); |
| 1849 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1850 | /* |
| 1851 | * fd.io coding-style-patch-verification: ON |
| 1852 | * |
| 1853 | * Local Variables: |
| 1854 | * eval: (c-set-style "gnu") |
| 1855 | * End: |
| 1856 | */ |