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; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 39 | if (PREDICT_FALSE (svm_msg_q_ring_is_full (mq, SESSION_MQ_IO_EVT_RING))) |
| 40 | { |
| 41 | svm_msg_q_unlock (mq); |
| 42 | return -2; |
| 43 | } |
| 44 | msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING); |
| 45 | if (PREDICT_FALSE (svm_msg_q_msg_is_invalid (&msg))) |
| 46 | { |
| 47 | svm_msg_q_unlock (mq); |
| 48 | return -2; |
| 49 | } |
Florin Coras | 52207f1 | 2018-07-12 14:48:06 -0700 | [diff] [blame] | 50 | evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 51 | evt->event_type = evt_type; |
| 52 | switch (evt_type) |
| 53 | { |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 54 | case SESSION_CTRL_EVT_RPC: |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 55 | evt->rpc_args.fp = data; |
| 56 | evt->rpc_args.arg = args; |
| 57 | break; |
Aloys Augustin | 0c7f54d | 2019-07-03 16:59:43 +0200 | [diff] [blame] | 58 | case SESSION_IO_EVT_RX: |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 59 | case SESSION_IO_EVT_TX: |
Florin Coras | 844a36d | 2018-12-20 09:50:50 -0800 | [diff] [blame] | 60 | case SESSION_IO_EVT_TX_FLUSH: |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 61 | case SESSION_IO_EVT_BUILTIN_RX: |
Florin Coras | c0737e9 | 2019-03-04 14:19:39 -0800 | [diff] [blame] | 62 | evt->session_index = *(u32 *) data; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 63 | break; |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 64 | case SESSION_IO_EVT_BUILTIN_TX: |
| 65 | case SESSION_CTRL_EVT_CLOSE: |
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 | } |
| 73 | |
Florin Coras | 52207f1 | 2018-07-12 14:48:06 -0700 | [diff] [blame] | 74 | svm_msg_q_add_and_unlock (mq, &msg); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 75 | return 0; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 76 | } |
| 77 | |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 78 | int |
| 79 | 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] | 80 | { |
Florin Coras | c0737e9 | 2019-03-04 14:19:39 -0800 | [diff] [blame] | 81 | return session_send_evt_to_thread (&f->master_session_index, 0, |
| 82 | f->master_thread_index, evt_type); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | int |
Florin Coras | ef91534 | 2018-09-29 10:23:06 -0700 | [diff] [blame] | 86 | session_send_io_evt_to_thread_custom (void *data, u32 thread_index, |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 87 | session_evt_type_t evt_type) |
| 88 | { |
Florin Coras | ef91534 | 2018-09-29 10:23:06 -0700 | [diff] [blame] | 89 | return session_send_evt_to_thread (data, 0, thread_index, evt_type); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 90 | } |
| 91 | |
| 92 | int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 93 | 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] | 94 | { |
| 95 | /* only event supported for now is disconnect */ |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 96 | ASSERT (evt_type == SESSION_CTRL_EVT_CLOSE); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 97 | return session_send_evt_to_thread (s, 0, s->thread_index, |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 98 | SESSION_CTRL_EVT_CLOSE); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | void |
Nathan Skrzypczak | 60f3e65 | 2019-03-19 13:57:31 +0100 | [diff] [blame] | 102 | session_send_rpc_evt_to_thread_force (u32 thread_index, void *fp, |
| 103 | void *rpc_args) |
| 104 | { |
| 105 | session_send_evt_to_thread (fp, rpc_args, thread_index, |
| 106 | SESSION_CTRL_EVT_RPC); |
| 107 | } |
| 108 | |
| 109 | void |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 110 | session_send_rpc_evt_to_thread (u32 thread_index, void *fp, void *rpc_args) |
| 111 | { |
| 112 | if (thread_index != vlib_get_thread_index ()) |
Nathan Skrzypczak | 60f3e65 | 2019-03-19 13:57:31 +0100 | [diff] [blame] | 113 | session_send_rpc_evt_to_thread_force (thread_index, fp, rpc_args); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 114 | else |
| 115 | { |
| 116 | void (*fnp) (void *) = fp; |
| 117 | fnp (rpc_args); |
| 118 | } |
| 119 | } |
| 120 | |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 121 | static void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 122 | session_program_transport_close (session_t * s) |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 123 | { |
| 124 | u32 thread_index = vlib_get_thread_index (); |
Florin Coras | 2062ec0 | 2019-07-15 13:15:18 -0700 | [diff] [blame] | 125 | session_evt_elt_t *elt; |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 126 | session_worker_t *wrk; |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 127 | |
| 128 | /* If we are in the handler thread, or being called with the worker barrier |
| 129 | * held, just append a new event to pending disconnects vector. */ |
| 130 | if (vlib_thread_is_main_w_barrier () || thread_index == s->thread_index) |
| 131 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 132 | wrk = session_main_get_worker (s->thread_index); |
Florin Coras | 2062ec0 | 2019-07-15 13:15:18 -0700 | [diff] [blame] | 133 | elt = session_evt_elt_alloc (wrk); |
| 134 | clib_memset (&elt->evt, 0, sizeof (session_event_t)); |
| 135 | elt->evt.session_handle = session_handle (s); |
| 136 | elt->evt.event_type = SESSION_CTRL_EVT_CLOSE; |
| 137 | session_evt_add_pending_disconnects (wrk, elt); |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 138 | } |
| 139 | else |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 140 | session_send_ctrl_evt_to_thread (s, SESSION_CTRL_EVT_CLOSE); |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 141 | } |
| 142 | |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 143 | session_t * |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 144 | session_alloc (u32 thread_index) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 145 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 146 | session_worker_t *wrk = &session_main.wrk[thread_index]; |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 147 | session_t *s; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 148 | u8 will_expand = 0; |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 149 | pool_get_aligned_will_expand (wrk->sessions, will_expand, |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 150 | CLIB_CACHE_LINE_BYTES); |
| 151 | /* If we have peekers, let them finish */ |
Florin Coras | 84a30ef | 2018-01-24 10:49:23 -0800 | [diff] [blame] | 152 | if (PREDICT_FALSE (will_expand && vlib_num_workers ())) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 153 | { |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 154 | clib_rwlock_writer_lock (&wrk->peekers_rw_locks); |
| 155 | pool_get_aligned (wrk->sessions, s, CLIB_CACHE_LINE_BYTES); |
| 156 | clib_rwlock_writer_unlock (&wrk->peekers_rw_locks); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 157 | } |
| 158 | else |
| 159 | { |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 160 | pool_get_aligned (wrk->sessions, s, CLIB_CACHE_LINE_BYTES); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 161 | } |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 162 | clib_memset (s, 0, sizeof (*s)); |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 163 | s->session_index = s - wrk->sessions; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 164 | s->thread_index = thread_index; |
Nathan Skrzypczak | 2f0f96b | 2019-06-13 10:14:28 +0200 | [diff] [blame] | 165 | s->app_index = APP_INVALID_INDEX; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 166 | return s; |
| 167 | } |
| 168 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 169 | void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 170 | session_free (session_t * s) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 171 | { |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 172 | if (CLIB_DEBUG) |
Florin Coras | 6416e62 | 2019-04-03 17:52:43 -0700 | [diff] [blame] | 173 | { |
| 174 | u8 thread_index = s->thread_index; |
| 175 | clib_memset (s, 0xFA, sizeof (*s)); |
| 176 | pool_put (session_main.wrk[thread_index].sessions, s); |
| 177 | return; |
| 178 | } |
Florin Coras | cca9618 | 2019-07-19 07:34:13 -0700 | [diff] [blame] | 179 | SESSION_EVT (SESSION_EVT_FREE, s); |
Florin Coras | 6416e62 | 2019-04-03 17:52:43 -0700 | [diff] [blame] | 180 | pool_put (session_main.wrk[s->thread_index].sessions, s); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 181 | } |
| 182 | |
Florin Coras | 70f26d5 | 2019-07-08 11:47:18 -0700 | [diff] [blame] | 183 | static void |
| 184 | session_cleanup_notify (session_t * s, session_cleanup_ntf_t ntf) |
| 185 | { |
| 186 | app_worker_t *app_wrk; |
| 187 | |
| 188 | app_wrk = app_worker_get_if_valid (s->app_wrk_index); |
| 189 | if (!app_wrk) |
| 190 | return; |
| 191 | app_worker_cleanup_notify (app_wrk, s, ntf); |
| 192 | } |
| 193 | |
Florin Coras | eb97e5f | 2018-10-15 21:35:42 -0700 | [diff] [blame] | 194 | void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 195 | session_free_w_fifos (session_t * s) |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 196 | { |
Florin Coras | 70f26d5 | 2019-07-08 11:47:18 -0700 | [diff] [blame] | 197 | session_cleanup_notify (s, SESSION_CLEANUP_SESSION); |
Florin Coras | 19223e0 | 2019-03-03 14:56:05 -0800 | [diff] [blame] | 198 | segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo); |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 199 | session_free (s); |
| 200 | } |
| 201 | |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 202 | /** |
| 203 | * Cleans up session and lookup table. |
| 204 | * |
| 205 | * Transport connection must still be valid. |
| 206 | */ |
| 207 | static void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 208 | session_delete (session_t * s) |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 209 | { |
| 210 | int rv; |
| 211 | |
| 212 | /* Delete from the main lookup table. */ |
| 213 | if ((rv = session_lookup_del_session (s))) |
| 214 | clib_warning ("hash delete error, rv %d", rv); |
| 215 | |
| 216 | session_free_w_fifos (s); |
| 217 | } |
| 218 | |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 219 | static session_t * |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 220 | session_alloc_for_connection (transport_connection_t * tc) |
| 221 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 222 | session_t *s; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 223 | u32 thread_index = tc->thread_index; |
| 224 | |
Florin Coras | 40903ac | 2018-06-10 14:41:23 -0700 | [diff] [blame] | 225 | ASSERT (thread_index == vlib_get_thread_index () |
| 226 | || transport_protocol_is_cl (tc->proto)); |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 227 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 228 | s = session_alloc (thread_index); |
| 229 | 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] | 230 | s->session_state = SESSION_STATE_CLOSED; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 231 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 232 | /* Attach transport to session and vice versa */ |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 233 | s->connection_index = tc->c_index; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 234 | tc->s_index = s->session_index; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 235 | return s; |
| 236 | } |
| 237 | |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 238 | /** |
| 239 | * Discards bytes from buffer chain |
| 240 | * |
| 241 | * It discards n_bytes_to_drop starting at first buffer after chain_b |
| 242 | */ |
| 243 | always_inline void |
| 244 | session_enqueue_discard_chain_bytes (vlib_main_t * vm, vlib_buffer_t * b, |
| 245 | vlib_buffer_t ** chain_b, |
| 246 | u32 n_bytes_to_drop) |
| 247 | { |
| 248 | vlib_buffer_t *next = *chain_b; |
| 249 | u32 to_drop = n_bytes_to_drop; |
| 250 | ASSERT (b->flags & VLIB_BUFFER_NEXT_PRESENT); |
| 251 | while (to_drop && (next->flags & VLIB_BUFFER_NEXT_PRESENT)) |
| 252 | { |
| 253 | next = vlib_get_buffer (vm, next->next_buffer); |
| 254 | if (next->current_length > to_drop) |
| 255 | { |
| 256 | vlib_buffer_advance (next, to_drop); |
| 257 | to_drop = 0; |
| 258 | } |
| 259 | else |
| 260 | { |
| 261 | to_drop -= next->current_length; |
| 262 | next->current_length = 0; |
| 263 | } |
| 264 | } |
| 265 | *chain_b = next; |
| 266 | |
| 267 | if (to_drop == 0) |
| 268 | b->total_length_not_including_first_buffer -= n_bytes_to_drop; |
| 269 | } |
| 270 | |
| 271 | /** |
| 272 | * Enqueue buffer chain tail |
| 273 | */ |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 274 | always_inline int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 275 | session_enqueue_chain_tail (session_t * s, vlib_buffer_t * b, |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 276 | u32 offset, u8 is_in_order) |
| 277 | { |
| 278 | vlib_buffer_t *chain_b; |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 279 | u32 chain_bi, len, diff; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 280 | vlib_main_t *vm = vlib_get_main (); |
Florin Coras | b2215d6 | 2017-08-01 16:56:58 -0700 | [diff] [blame] | 281 | u8 *data; |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 282 | u32 written = 0; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 283 | int rv = 0; |
| 284 | |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 285 | if (is_in_order && offset) |
| 286 | { |
| 287 | diff = offset - b->current_length; |
| 288 | if (diff > b->total_length_not_including_first_buffer) |
| 289 | return 0; |
| 290 | chain_b = b; |
| 291 | session_enqueue_discard_chain_bytes (vm, b, &chain_b, diff); |
| 292 | chain_bi = vlib_get_buffer_index (vm, chain_b); |
| 293 | } |
| 294 | else |
| 295 | chain_bi = b->next_buffer; |
| 296 | |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 297 | do |
| 298 | { |
| 299 | chain_b = vlib_get_buffer (vm, chain_bi); |
| 300 | data = vlib_buffer_get_current (chain_b); |
| 301 | len = chain_b->current_length; |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 302 | if (!len) |
| 303 | continue; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 304 | if (is_in_order) |
| 305 | { |
Florin Coras | 87b15ce | 2019-04-28 21:16:30 -0700 | [diff] [blame] | 306 | rv = svm_fifo_enqueue (s->rx_fifo, len, data); |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 307 | if (rv == len) |
| 308 | { |
| 309 | written += rv; |
| 310 | } |
| 311 | else if (rv < len) |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 312 | { |
| 313 | return (rv > 0) ? (written + rv) : written; |
| 314 | } |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 315 | else if (rv > len) |
| 316 | { |
| 317 | written += rv; |
| 318 | |
| 319 | /* written more than what was left in chain */ |
| 320 | if (written > b->total_length_not_including_first_buffer) |
| 321 | return written; |
| 322 | |
| 323 | /* drop the bytes that have already been delivered */ |
| 324 | session_enqueue_discard_chain_bytes (vm, b, &chain_b, rv - len); |
| 325 | } |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 326 | } |
| 327 | else |
| 328 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 329 | rv = svm_fifo_enqueue_with_offset (s->rx_fifo, offset, len, data); |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 330 | if (rv) |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 331 | { |
| 332 | clib_warning ("failed to enqueue multi-buffer seg"); |
| 333 | return -1; |
| 334 | } |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 335 | offset += len; |
| 336 | } |
| 337 | } |
| 338 | while ((chain_bi = (chain_b->flags & VLIB_BUFFER_NEXT_PRESENT) |
| 339 | ? chain_b->next_buffer : 0)); |
| 340 | |
| 341 | if (is_in_order) |
| 342 | return written; |
| 343 | |
| 344 | return 0; |
| 345 | } |
| 346 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 347 | /* |
| 348 | * Enqueue data for delivery to session peer. Does not notify peer of enqueue |
| 349 | * event but on request can queue notification events for later delivery by |
| 350 | * calling stream_server_flush_enqueue_events(). |
| 351 | * |
| 352 | * @param tc Transport connection which is to be enqueued data |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 353 | * @param b Buffer to be enqueued |
| 354 | * @param offset Offset at which to start enqueueing if out-of-order |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 355 | * @param queue_event Flag to indicate if peer is to be notified or if event |
| 356 | * is to be queued. The former is useful when more data is |
| 357 | * enqueued and only one event is to be generated. |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 358 | * @param is_in_order Flag to indicate if data is in order |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 359 | * @return Number of bytes enqueued or a negative value if enqueueing failed. |
| 360 | */ |
| 361 | int |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 362 | session_enqueue_stream_connection (transport_connection_t * tc, |
| 363 | vlib_buffer_t * b, u32 offset, |
| 364 | u8 queue_event, u8 is_in_order) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 365 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 366 | session_t *s; |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 367 | int enqueued = 0, rv, in_order_off; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 368 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 369 | s = session_get (tc->s_index, tc->thread_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 370 | |
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 | enqueued = svm_fifo_enqueue (s->rx_fifo, |
| 374 | b->current_length, |
| 375 | vlib_buffer_get_current (b)); |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 376 | if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) |
| 377 | && enqueued >= 0)) |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 378 | { |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 379 | in_order_off = enqueued > b->current_length ? enqueued : 0; |
| 380 | rv = session_enqueue_chain_tail (s, b, in_order_off, 1); |
| 381 | if (rv > 0) |
| 382 | enqueued += rv; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 383 | } |
| 384 | } |
| 385 | else |
| 386 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 387 | rv = svm_fifo_enqueue_with_offset (s->rx_fifo, offset, |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 388 | b->current_length, |
| 389 | vlib_buffer_get_current (b)); |
| 390 | if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) && !rv)) |
Florin Coras | 1f152cd | 2017-08-18 19:28:03 -0700 | [diff] [blame] | 391 | session_enqueue_chain_tail (s, b, offset + b->current_length, 0); |
| 392 | /* if something was enqueued, report even this as success for ooo |
| 393 | * segment handling */ |
| 394 | return rv; |
Florin Coras | f6d68ed | 2017-05-07 19:12:02 -0700 | [diff] [blame] | 395 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 396 | |
| 397 | if (queue_event) |
| 398 | { |
| 399 | /* Queue RX event on this fifo. Eventually these will need to be flushed |
| 400 | * by calling stream_server_flush_enqueue_events () */ |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 401 | session_worker_t *wrk; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 402 | |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 403 | wrk = session_main_get_worker (s->thread_index); |
Florin Coras | d5c604d | 2019-03-18 09:06:35 -0700 | [diff] [blame] | 404 | if (!(s->flags & SESSION_F_RX_EVT)) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 405 | { |
Florin Coras | d5c604d | 2019-03-18 09:06:35 -0700 | [diff] [blame] | 406 | s->flags |= SESSION_F_RX_EVT; |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 407 | vec_add1 (wrk->session_to_enqueue[tc->proto], s->session_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 408 | } |
| 409 | } |
| 410 | |
Chris Luke | b2bcad6 | 2017-09-18 08:51:22 -0400 | [diff] [blame] | 411 | return enqueued; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 412 | } |
| 413 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 414 | int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 415 | session_enqueue_dgram_connection (session_t * s, |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 416 | session_dgram_hdr_t * hdr, |
| 417 | vlib_buffer_t * b, u8 proto, u8 queue_event) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 418 | { |
| 419 | int enqueued = 0, rv, in_order_off; |
| 420 | |
Sirshak Das | 28aa539 | 2019-02-05 01:33:33 -0600 | [diff] [blame] | 421 | ASSERT (svm_fifo_max_enqueue_prod (s->rx_fifo) |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 422 | >= b->current_length + sizeof (*hdr)); |
| 423 | |
Florin Coras | 87b15ce | 2019-04-28 21:16:30 -0700 | [diff] [blame] | 424 | svm_fifo_enqueue (s->rx_fifo, sizeof (session_dgram_hdr_t), (u8 *) hdr); |
| 425 | enqueued = svm_fifo_enqueue (s->rx_fifo, b->current_length, |
| 426 | vlib_buffer_get_current (b)); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 427 | if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) && enqueued >= 0)) |
| 428 | { |
| 429 | in_order_off = enqueued > b->current_length ? enqueued : 0; |
| 430 | rv = session_enqueue_chain_tail (s, b, in_order_off, 1); |
| 431 | if (rv > 0) |
| 432 | enqueued += rv; |
| 433 | } |
| 434 | if (queue_event) |
| 435 | { |
| 436 | /* Queue RX event on this fifo. Eventually these will need to be flushed |
| 437 | * by calling stream_server_flush_enqueue_events () */ |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 438 | session_worker_t *wrk; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 439 | |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 440 | wrk = session_main_get_worker (s->thread_index); |
Florin Coras | d5c604d | 2019-03-18 09:06:35 -0700 | [diff] [blame] | 441 | if (!(s->flags & SESSION_F_RX_EVT)) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 442 | { |
Florin Coras | d5c604d | 2019-03-18 09:06:35 -0700 | [diff] [blame] | 443 | s->flags |= SESSION_F_RX_EVT; |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 444 | vec_add1 (wrk->session_to_enqueue[proto], s->session_index); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 445 | } |
| 446 | } |
| 447 | return enqueued; |
| 448 | } |
| 449 | |
Florin Coras | 93992a9 | 2017-05-24 18:03:56 -0700 | [diff] [blame] | 450 | int |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 451 | session_tx_fifo_peek_bytes (transport_connection_t * tc, u8 * buffer, |
| 452 | u32 offset, u32 max_bytes) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 453 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 454 | session_t *s = session_get (tc->s_index, tc->thread_index); |
| 455 | return svm_fifo_peek (s->tx_fifo, offset, max_bytes, buffer); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 456 | } |
| 457 | |
| 458 | u32 |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 459 | session_tx_fifo_dequeue_drop (transport_connection_t * tc, u32 max_bytes) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 460 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 461 | session_t *s = session_get (tc->s_index, tc->thread_index); |
Vladimir Kropylev | f867cf1 | 2019-06-17 21:38:00 +0300 | [diff] [blame] | 462 | u32 rv; |
| 463 | |
| 464 | rv = svm_fifo_dequeue_drop (s->tx_fifo, max_bytes); |
Florin Coras | 0e573f5 | 2019-05-07 16:28:16 -0700 | [diff] [blame] | 465 | |
Florin Coras | 2d379d8 | 2019-06-28 12:45:12 -0700 | [diff] [blame] | 466 | if (svm_fifo_needs_deq_ntf (s->tx_fifo, max_bytes)) |
Florin Coras | 0e573f5 | 2019-05-07 16:28:16 -0700 | [diff] [blame] | 467 | session_dequeue_notify (s); |
| 468 | |
Vladimir Kropylev | f867cf1 | 2019-06-17 21:38:00 +0300 | [diff] [blame] | 469 | return rv; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 470 | } |
| 471 | |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 472 | static inline int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 473 | session_notify_subscribers (u32 app_index, session_t * s, |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 474 | svm_fifo_t * f, session_evt_type_t evt_type) |
| 475 | { |
| 476 | app_worker_t *app_wrk; |
| 477 | application_t *app; |
| 478 | int i; |
| 479 | |
| 480 | app = application_get (app_index); |
| 481 | if (!app) |
| 482 | return -1; |
| 483 | |
| 484 | for (i = 0; i < f->n_subscribers; i++) |
| 485 | { |
| 486 | app_wrk = application_get_worker (app, f->subscribers[i]); |
| 487 | if (!app_wrk) |
| 488 | continue; |
| 489 | if (app_worker_lock_and_send_event (app_wrk, s, evt_type)) |
| 490 | return -1; |
| 491 | } |
| 492 | |
| 493 | return 0; |
| 494 | } |
| 495 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 496 | /** |
| 497 | * Notify session peer that new data has been enqueued. |
| 498 | * |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 499 | * @param s Stream session for which the event is to be generated. |
| 500 | * @param lock Flag to indicate if call should lock message queue. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 501 | * |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 502 | * @return 0 on success or negative number if failed to send notification. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 503 | */ |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 504 | static inline int |
Florin Coras | 653e43f | 2019-03-04 10:56:23 -0800 | [diff] [blame] | 505 | session_enqueue_notify_inline (session_t * s) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 506 | { |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 507 | app_worker_t *app_wrk; |
Aloys Augustin | b3b267c | 2019-04-09 11:25:56 +0200 | [diff] [blame] | 508 | u32 session_index; |
| 509 | u8 n_subscribers; |
| 510 | |
| 511 | session_index = s->session_index; |
| 512 | n_subscribers = svm_fifo_n_subscribers (s->rx_fifo); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 513 | |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 514 | app_wrk = app_worker_get_if_valid (s->app_wrk_index); |
| 515 | if (PREDICT_FALSE (!app_wrk)) |
Dave Barach | 818eb54 | 2017-08-02 13:56:13 -0400 | [diff] [blame] | 516 | { |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 517 | SESSION_DBG ("invalid s->app_index = %d", s->app_wrk_index); |
Dave Barach | 818eb54 | 2017-08-02 13:56:13 -0400 | [diff] [blame] | 518 | return 0; |
| 519 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 520 | |
Florin Coras | cca9618 | 2019-07-19 07:34:13 -0700 | [diff] [blame] | 521 | 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] | 522 | |
Florin Coras | d5c604d | 2019-03-18 09:06:35 -0700 | [diff] [blame] | 523 | s->flags &= ~SESSION_F_RX_EVT; |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 524 | if (PREDICT_FALSE (app_worker_lock_and_send_event (app_wrk, s, |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 525 | SESSION_IO_EVT_RX))) |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 526 | return -1; |
| 527 | |
Aloys Augustin | b3b267c | 2019-04-09 11:25:56 +0200 | [diff] [blame] | 528 | if (PREDICT_FALSE (n_subscribers)) |
| 529 | { |
| 530 | s = session_get (session_index, vlib_get_thread_index ()); |
| 531 | return session_notify_subscribers (app_wrk->app_index, s, |
| 532 | s->rx_fifo, SESSION_IO_EVT_RX); |
| 533 | } |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 534 | |
| 535 | return 0; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 536 | } |
| 537 | |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 538 | int |
Florin Coras | 653e43f | 2019-03-04 10:56:23 -0800 | [diff] [blame] | 539 | session_enqueue_notify (session_t * s) |
| 540 | { |
| 541 | return session_enqueue_notify_inline (s); |
| 542 | } |
| 543 | |
| 544 | int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 545 | session_dequeue_notify (session_t * s) |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 546 | { |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 547 | app_worker_t *app_wrk; |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 548 | |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 549 | app_wrk = app_worker_get_if_valid (s->app_wrk_index); |
| 550 | if (PREDICT_FALSE (!app_wrk)) |
Florin Coras | 208daa1 | 2018-07-02 01:30:51 -0700 | [diff] [blame] | 551 | return -1; |
| 552 | |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 553 | if (PREDICT_FALSE (app_worker_lock_and_send_event (app_wrk, s, |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 554 | SESSION_IO_EVT_TX))) |
Florin Coras | 1bcad5c | 2019-01-09 20:04:38 -0800 | [diff] [blame] | 555 | return -1; |
| 556 | |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 557 | if (PREDICT_FALSE (s->tx_fifo->n_subscribers)) |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 558 | return session_notify_subscribers (app_wrk->app_index, s, |
Florin Coras | f6c4313 | 2019-03-01 12:41:21 -0800 | [diff] [blame] | 559 | s->tx_fifo, SESSION_IO_EVT_TX); |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 560 | |
Florin Coras | 2d379d8 | 2019-06-28 12:45:12 -0700 | [diff] [blame] | 561 | svm_fifo_clear_deq_ntf (s->tx_fifo); |
Florin Coras | 72b0428 | 2019-01-14 17:23:11 -0800 | [diff] [blame] | 562 | |
Florin Coras | 1bcad5c | 2019-01-09 20:04:38 -0800 | [diff] [blame] | 563 | return 0; |
Florin Coras | 0d60a0f | 2018-06-29 02:02:08 -0700 | [diff] [blame] | 564 | } |
| 565 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 566 | /** |
| 567 | * Flushes queue of sessions that are to be notified of new data |
| 568 | * enqueued events. |
| 569 | * |
| 570 | * @param thread_index Thread index for which the flush is to be performed. |
| 571 | * @return 0 on success or a positive number indicating the number of |
| 572 | * failures due to API queue being full. |
| 573 | */ |
| 574 | int |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 575 | session_main_flush_enqueue_events (u8 transport_proto, u32 thread_index) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 576 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 577 | session_worker_t *wrk = session_main_get_worker (thread_index); |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 578 | session_t *s; |
Florin Coras | 2179513 | 2018-09-09 09:40:51 -0700 | [diff] [blame] | 579 | int i, errors = 0; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 580 | u32 *indices; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 581 | |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 582 | indices = wrk->session_to_enqueue[transport_proto]; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 583 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 584 | for (i = 0; i < vec_len (indices); i++) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 585 | { |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 586 | s = session_get_if_valid (indices[i], thread_index); |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 587 | if (PREDICT_FALSE (!s)) |
| 588 | { |
| 589 | errors++; |
| 590 | continue; |
| 591 | } |
Florin Coras | 653e43f | 2019-03-04 10:56:23 -0800 | [diff] [blame] | 592 | |
Florin Coras | 653e43f | 2019-03-04 10:56:23 -0800 | [diff] [blame] | 593 | if (PREDICT_FALSE (session_enqueue_notify_inline (s))) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 594 | errors++; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 595 | } |
| 596 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 597 | vec_reset_length (indices); |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 598 | wrk->session_to_enqueue[transport_proto] = indices; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 599 | |
| 600 | return errors; |
| 601 | } |
| 602 | |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 603 | int |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 604 | session_main_flush_all_enqueue_events (u8 transport_proto) |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 605 | { |
| 606 | vlib_thread_main_t *vtm = vlib_get_thread_main (); |
| 607 | int i, errors = 0; |
| 608 | for (i = 0; i < 1 + vtm->n_threads; i++) |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 609 | errors += session_main_flush_enqueue_events (transport_proto, i); |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 610 | return errors; |
| 611 | } |
| 612 | |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 613 | static inline int |
| 614 | session_stream_connect_notify_inline (transport_connection_t * tc, u8 is_fail, |
| 615 | session_state_t opened_state) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 616 | { |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 617 | u32 opaque = 0, new_ti, new_si; |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 618 | app_worker_t *app_wrk; |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 619 | session_t *s = 0; |
| 620 | u64 ho_handle; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 621 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 622 | /* |
| 623 | * Find connection handle and cleanup half-open table |
| 624 | */ |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 625 | ho_handle = session_lookup_half_open_handle (tc); |
| 626 | if (ho_handle == HALF_OPEN_LOOKUP_INVALID_VALUE) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 627 | { |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 628 | SESSION_DBG ("half-open was removed!"); |
Florin Coras | f03a59a | 2017-06-09 21:07:32 -0700 | [diff] [blame] | 629 | return -1; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 630 | } |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 631 | session_lookup_del_half_open (tc); |
Florin Coras | 4eeeaaf | 2017-09-05 14:03:37 -0400 | [diff] [blame] | 632 | |
Florin Coras | ab0289a | 2017-08-14 11:25:25 -0700 | [diff] [blame] | 633 | /* Get the app's index from the handle we stored when opening connection |
| 634 | * and the opaque (api_context for external apps) from transport session |
Florin Coras | 4eeeaaf | 2017-09-05 14:03:37 -0400 | [diff] [blame] | 635 | * index */ |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 636 | app_wrk = app_worker_get_if_valid (ho_handle >> 32); |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 637 | if (!app_wrk) |
Florin Coras | c87c91d | 2017-08-16 19:55:49 -0700 | [diff] [blame] | 638 | return -1; |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 639 | |
Florin Coras | ab0289a | 2017-08-14 11:25:25 -0700 | [diff] [blame] | 640 | opaque = tc->s_index; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 641 | |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 642 | if (is_fail) |
| 643 | return app_worker_connect_notify (app_wrk, s, opaque); |
| 644 | |
| 645 | s = session_alloc_for_connection (tc); |
| 646 | s->session_state = SESSION_STATE_CONNECTING; |
| 647 | s->app_wrk_index = app_wrk->wrk_index; |
| 648 | new_si = s->session_index; |
| 649 | new_ti = s->thread_index; |
| 650 | |
| 651 | if (app_worker_init_connected (app_wrk, s)) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 652 | { |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 653 | session_free (s); |
| 654 | app_worker_connect_notify (app_wrk, 0, opaque); |
| 655 | return -1; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 656 | } |
| 657 | |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 658 | s = session_get (new_si, new_ti); |
| 659 | s->session_state = opened_state; |
| 660 | session_lookup_add_connection (tc, session_handle (s)); |
| 661 | |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 662 | if (app_worker_connect_notify (app_wrk, s, opaque)) |
Florin Coras | 6534b7a | 2017-07-18 05:38:03 -0400 | [diff] [blame] | 663 | { |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 664 | s = session_get (new_si, new_ti); |
| 665 | session_free_w_fifos (s); |
| 666 | return -1; |
Florin Coras | 6534b7a | 2017-07-18 05:38:03 -0400 | [diff] [blame] | 667 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 668 | |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 669 | return 0; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 670 | } |
| 671 | |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 672 | int |
| 673 | session_stream_connect_notify (transport_connection_t * tc, u8 is_fail) |
| 674 | { |
| 675 | return session_stream_connect_notify_inline (tc, is_fail, |
| 676 | SESSION_STATE_READY); |
| 677 | } |
| 678 | |
| 679 | int |
| 680 | session_ho_stream_connect_notify (transport_connection_t * tc, u8 is_fail) |
| 681 | { |
| 682 | return session_stream_connect_notify_inline (tc, is_fail, |
| 683 | SESSION_STATE_OPENED); |
| 684 | } |
| 685 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 686 | typedef struct _session_switch_pool_args |
| 687 | { |
| 688 | u32 session_index; |
| 689 | u32 thread_index; |
| 690 | u32 new_thread_index; |
| 691 | u32 new_session_index; |
| 692 | } session_switch_pool_args_t; |
| 693 | |
| 694 | static void |
| 695 | session_switch_pool (void *cb_args) |
| 696 | { |
| 697 | session_switch_pool_args_t *args = (session_switch_pool_args_t *) cb_args; |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 698 | session_t *s; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 699 | ASSERT (args->thread_index == vlib_get_thread_index ()); |
| 700 | s = session_get (args->session_index, args->thread_index); |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 701 | s->tx_fifo->master_session_index = args->new_session_index; |
| 702 | s->tx_fifo->master_thread_index = args->new_thread_index; |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 703 | transport_cleanup (session_get_transport_proto (s), s->connection_index, |
| 704 | s->thread_index); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 705 | session_free (s); |
| 706 | clib_mem_free (cb_args); |
| 707 | } |
| 708 | |
| 709 | /** |
| 710 | * Move dgram session to the right thread |
| 711 | */ |
| 712 | int |
| 713 | session_dgram_connect_notify (transport_connection_t * tc, |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 714 | u32 old_thread_index, session_t ** new_session) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 715 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 716 | session_t *new_s; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 717 | session_switch_pool_args_t *rpc_args; |
| 718 | |
| 719 | /* |
| 720 | * Clone half-open session to the right thread. |
| 721 | */ |
| 722 | new_s = session_clone_safe (tc->s_index, old_thread_index); |
| 723 | new_s->connection_index = tc->c_index; |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 724 | new_s->rx_fifo->master_session_index = new_s->session_index; |
| 725 | new_s->rx_fifo->master_thread_index = new_s->thread_index; |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 726 | new_s->session_state = SESSION_STATE_READY; |
| 727 | session_lookup_add_connection (tc, session_handle (new_s)); |
| 728 | |
| 729 | /* |
| 730 | * Ask thread owning the old session to clean it up and make us the tx |
| 731 | * fifo owner |
| 732 | */ |
| 733 | rpc_args = clib_mem_alloc (sizeof (*rpc_args)); |
| 734 | rpc_args->new_session_index = new_s->session_index; |
| 735 | rpc_args->new_thread_index = new_s->thread_index; |
| 736 | rpc_args->session_index = tc->s_index; |
| 737 | rpc_args->thread_index = old_thread_index; |
| 738 | session_send_rpc_evt_to_thread (rpc_args->thread_index, session_switch_pool, |
| 739 | rpc_args); |
| 740 | |
| 741 | tc->s_index = new_s->session_index; |
| 742 | new_s->connection_index = tc->c_index; |
| 743 | *new_session = new_s; |
| 744 | return 0; |
| 745 | } |
| 746 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 747 | /** |
| 748 | * Notification from transport that connection is being closed. |
| 749 | * |
| 750 | * A disconnect is sent to application but state is not removed. Once |
| 751 | * disconnect is acknowledged by application, session disconnect is called. |
| 752 | * Ultimately this leads to close being called on transport (passive close). |
| 753 | */ |
| 754 | void |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 755 | session_transport_closing_notify (transport_connection_t * tc) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 756 | { |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 757 | app_worker_t *app_wrk; |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 758 | session_t *s; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 759 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 760 | s = session_get (tc->s_index, tc->thread_index); |
Florin Coras | 400ded3 | 2018-10-03 01:00:57 -0700 | [diff] [blame] | 761 | if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSING) |
| 762 | return; |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 763 | s->session_state = SESSION_STATE_TRANSPORT_CLOSING; |
Florin Coras | bf7ce2c | 2019-03-06 14:44:42 -0800 | [diff] [blame] | 764 | app_wrk = app_worker_get (s->app_wrk_index); |
| 765 | app_worker_close_notify (app_wrk, s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 766 | } |
| 767 | |
| 768 | /** |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 769 | * Notification from transport that connection is being deleted |
| 770 | * |
Florin Coras | 4eeeaaf | 2017-09-05 14:03:37 -0400 | [diff] [blame] | 771 | * This removes the session if it is still valid. It should be called only on |
| 772 | * previously fully established sessions. For instance failed connects should |
| 773 | * call stream_session_connect_notify and indicate that the connect has |
| 774 | * failed. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 775 | */ |
| 776 | void |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 777 | session_transport_delete_notify (transport_connection_t * tc) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 778 | { |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 779 | session_t *s; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 780 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 781 | /* App might've been removed already */ |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 782 | if (!(s = session_get_if_valid (tc->s_index, tc->thread_index))) |
Florin Coras | c87c91d | 2017-08-16 19:55:49 -0700 | [diff] [blame] | 783 | return; |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 784 | |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 785 | switch (s->session_state) |
| 786 | { |
Florin Coras | 222e1f41 | 2019-02-16 20:47:32 -0800 | [diff] [blame] | 787 | case SESSION_STATE_CREATED: |
| 788 | /* Session was created but accept notification was not yet sent to the |
| 789 | * app. Cleanup everything. */ |
| 790 | session_lookup_del_session (s); |
| 791 | session_free_w_fifos (s); |
| 792 | break; |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 793 | case SESSION_STATE_ACCEPTING: |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 794 | case SESSION_STATE_TRANSPORT_CLOSING: |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 795 | case SESSION_STATE_CLOSING: |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 796 | /* If transport finishes or times out before we get a reply |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 797 | * from the app, mark transport as closed and wait for reply |
| 798 | * before removing the session. Cleanup session table in advance |
Florin Coras | a9d5bea | 2018-12-17 08:24:19 -0800 | [diff] [blame] | 799 | * because transport will soon be closed and closed sessions |
| 800 | * are assumed to have been removed from the lookup table */ |
| 801 | session_lookup_del_session (s); |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 802 | s->session_state = SESSION_STATE_TRANSPORT_CLOSED; |
Florin Coras | 70f26d5 | 2019-07-08 11:47:18 -0700 | [diff] [blame] | 803 | session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT); |
| 804 | svm_fifo_dequeue_drop_all (s->tx_fifo); |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 805 | break; |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 806 | case SESSION_STATE_APP_CLOSED: |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 807 | /* Cleanup lookup table as transport needs to still be valid. |
| 808 | * Program transport close to ensure that all session events |
| 809 | * have been cleaned up. Once transport close is called, the |
| 810 | * session is just removed because both transport and app have |
| 811 | * confirmed the close*/ |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 812 | session_lookup_del_session (s); |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 813 | s->session_state = SESSION_STATE_CLOSED; |
Florin Coras | 70f26d5 | 2019-07-08 11:47:18 -0700 | [diff] [blame] | 814 | session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT); |
| 815 | svm_fifo_dequeue_drop_all (s->tx_fifo); |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 816 | session_program_transport_close (s); |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 817 | break; |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 818 | case SESSION_STATE_TRANSPORT_CLOSED: |
| 819 | break; |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 820 | case SESSION_STATE_CLOSED: |
Florin Coras | 70f26d5 | 2019-07-08 11:47:18 -0700 | [diff] [blame] | 821 | session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT); |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 822 | session_delete (s); |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 823 | break; |
Florin Coras | c01d578 | 2018-10-17 14:53:11 -0700 | [diff] [blame] | 824 | default: |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 825 | clib_warning ("session state %u", s->session_state); |
Florin Coras | 70f26d5 | 2019-07-08 11:47:18 -0700 | [diff] [blame] | 826 | session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT); |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 827 | session_delete (s); |
Florin Coras | c01d578 | 2018-10-17 14:53:11 -0700 | [diff] [blame] | 828 | break; |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 829 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 830 | } |
| 831 | |
| 832 | /** |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 833 | * Notification from transport that it is closed |
Florin Coras | 54ddf43 | 2018-12-21 13:54:09 -0800 | [diff] [blame] | 834 | * |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 835 | * Should be called by transport, prior to calling delete notify, once it |
| 836 | * knows that no more data will be exchanged. This could serve as an |
| 837 | * early acknowledgment of an active close especially if transport delete |
| 838 | * can be delayed a long time, e.g., tcp time-wait. |
Florin Coras | 54ddf43 | 2018-12-21 13:54:09 -0800 | [diff] [blame] | 839 | */ |
| 840 | void |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 841 | session_transport_closed_notify (transport_connection_t * tc) |
Florin Coras | 54ddf43 | 2018-12-21 13:54:09 -0800 | [diff] [blame] | 842 | { |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 843 | app_worker_t *app_wrk; |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 844 | session_t *s; |
Florin Coras | 54ddf43 | 2018-12-21 13:54:09 -0800 | [diff] [blame] | 845 | |
| 846 | if (!(s = session_get_if_valid (tc->s_index, tc->thread_index))) |
| 847 | return; |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 848 | |
Florin Coras | 06a2eec | 2019-05-23 22:28:16 -0700 | [diff] [blame] | 849 | /* Transport thinks that app requested close but it actually didn't. |
| 850 | * Can happen for tcp if fin and rst are received in close succession. */ |
| 851 | if (s->session_state == SESSION_STATE_READY) |
| 852 | { |
| 853 | session_transport_closing_notify (tc); |
| 854 | svm_fifo_dequeue_drop_all (s->tx_fifo); |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 855 | s->session_state = SESSION_STATE_TRANSPORT_CLOSED; |
Florin Coras | 06a2eec | 2019-05-23 22:28:16 -0700 | [diff] [blame] | 856 | } |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 857 | /* If app close has not been received or has not yet resulted in |
| 858 | * a transport close, only mark the session transport as closed */ |
Florin Coras | 06a2eec | 2019-05-23 22:28:16 -0700 | [diff] [blame] | 859 | else if (s->session_state <= SESSION_STATE_CLOSING) |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 860 | { |
| 861 | session_lookup_del_session (s); |
| 862 | s->session_state = SESSION_STATE_TRANSPORT_CLOSED; |
| 863 | } |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 864 | /* In all closing states but transport closed switch to closed */ |
| 865 | else if (s->session_state != SESSION_STATE_TRANSPORT_CLOSED) |
Florin Coras | b0f662f | 2018-12-27 14:51:46 -0800 | [diff] [blame] | 866 | s->session_state = SESSION_STATE_CLOSED; |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 867 | |
| 868 | app_wrk = app_worker_get_if_valid (s->app_wrk_index); |
| 869 | if (app_wrk) |
| 870 | app_worker_transport_closed_notify (app_wrk, s); |
Florin Coras | 54ddf43 | 2018-12-21 13:54:09 -0800 | [diff] [blame] | 871 | } |
| 872 | |
| 873 | /** |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 874 | * Notify application that connection has been reset. |
| 875 | */ |
| 876 | void |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 877 | session_transport_reset_notify (transport_connection_t * tc) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 878 | { |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 879 | app_worker_t *app_wrk; |
Florin Coras | 69b68ef | 2019-04-02 11:38:51 -0700 | [diff] [blame] | 880 | session_t *s; |
| 881 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 882 | s = session_get (tc->s_index, tc->thread_index); |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 883 | svm_fifo_dequeue_drop_all (s->tx_fifo); |
Florin Coras | 3c7d4f9 | 2018-12-14 11:28:43 -0800 | [diff] [blame] | 884 | if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSING) |
| 885 | return; |
| 886 | s->session_state = SESSION_STATE_TRANSPORT_CLOSING; |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 887 | app_wrk = app_worker_get (s->app_wrk_index); |
Florin Coras | 69b68ef | 2019-04-02 11:38:51 -0700 | [diff] [blame] | 888 | app_worker_reset_notify (app_wrk, s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 889 | } |
| 890 | |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 891 | int |
| 892 | session_stream_accept_notify (transport_connection_t * tc) |
| 893 | { |
| 894 | app_worker_t *app_wrk; |
| 895 | session_t *s; |
| 896 | |
| 897 | s = session_get (tc->s_index, tc->thread_index); |
| 898 | app_wrk = app_worker_get_if_valid (s->app_wrk_index); |
| 899 | if (!app_wrk) |
| 900 | return -1; |
| 901 | s->session_state = SESSION_STATE_ACCEPTING; |
| 902 | return app_worker_accept_notify (app_wrk, s); |
| 903 | } |
| 904 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 905 | /** |
| 906 | * Accept a stream session. Optionally ping the server by callback. |
| 907 | */ |
| 908 | int |
Florin Coras | c9940fc | 2019-02-05 20:55:11 -0800 | [diff] [blame] | 909 | session_stream_accept (transport_connection_t * tc, u32 listener_index, |
Nathan Skrzypczak | 2f0f96b | 2019-06-13 10:14:28 +0200 | [diff] [blame] | 910 | u32 thread_index, u8 notify) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 911 | { |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 912 | session_t *s; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 913 | int rv; |
| 914 | |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 915 | s = session_alloc_for_connection (tc); |
Nathan Skrzypczak | 2f0f96b | 2019-06-13 10:14:28 +0200 | [diff] [blame] | 916 | s->listener_handle = ((u64) thread_index << 32) | (u64) listener_index; |
Florin Coras | 222e1f41 | 2019-02-16 20:47:32 -0800 | [diff] [blame] | 917 | s->session_state = SESSION_STATE_CREATED; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 918 | |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 919 | if ((rv = app_worker_init_accepted (s))) |
| 920 | return rv; |
| 921 | |
| 922 | session_lookup_add_connection (tc, session_handle (s)); |
| 923 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 924 | /* Shoulder-tap the server */ |
| 925 | if (notify) |
| 926 | { |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 927 | app_worker_t *app_wrk = app_worker_get (s->app_wrk_index); |
| 928 | return app_worker_accept_notify (app_wrk, s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 929 | } |
| 930 | |
| 931 | return 0; |
| 932 | } |
| 933 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 934 | int |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 935 | 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] | 936 | { |
| 937 | transport_connection_t *tc; |
Florin Coras | 5665ced | 2018-10-25 18:03:45 -0700 | [diff] [blame] | 938 | transport_endpoint_cfg_t *tep; |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 939 | app_worker_t *app_wrk; |
Aloys Augustin | 20ab31e | 2019-03-25 11:29:17 +0100 | [diff] [blame] | 940 | session_handle_t sh; |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 941 | session_t *s; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 942 | int rv; |
| 943 | |
Florin Coras | 5665ced | 2018-10-25 18:03:45 -0700 | [diff] [blame] | 944 | tep = session_endpoint_to_transport_cfg (rmt); |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 945 | rv = transport_connect (rmt->transport_proto, tep); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 946 | if (rv < 0) |
| 947 | { |
| 948 | SESSION_DBG ("Transport failed to open connection."); |
| 949 | return VNET_API_ERROR_SESSION_CONNECT; |
| 950 | } |
| 951 | |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 952 | tc = transport_get_half_open (rmt->transport_proto, (u32) rv); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 953 | |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 954 | /* For dgram type of service, allocate session and fifos now */ |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 955 | app_wrk = app_worker_get (app_wrk_index); |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 956 | s = session_alloc_for_connection (tc); |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 957 | s->app_wrk_index = app_wrk->wrk_index; |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 958 | s->session_state = SESSION_STATE_OPENED; |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 959 | if (app_worker_init_connected (app_wrk, s)) |
| 960 | { |
| 961 | session_free (s); |
| 962 | return -1; |
| 963 | } |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 964 | |
Aloys Augustin | 20ab31e | 2019-03-25 11:29:17 +0100 | [diff] [blame] | 965 | sh = session_handle (s); |
| 966 | session_lookup_add_connection (tc, sh); |
Florin Coras | a27a46e | 2019-02-18 13:02:28 -0800 | [diff] [blame] | 967 | return app_worker_connect_notify (app_wrk, s, opaque); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 968 | } |
| 969 | |
| 970 | int |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 971 | 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] | 972 | { |
| 973 | transport_connection_t *tc; |
Florin Coras | 5665ced | 2018-10-25 18:03:45 -0700 | [diff] [blame] | 974 | transport_endpoint_cfg_t *tep; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 975 | u64 handle; |
| 976 | int rv; |
| 977 | |
Florin Coras | 5665ced | 2018-10-25 18:03:45 -0700 | [diff] [blame] | 978 | tep = session_endpoint_to_transport_cfg (rmt); |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 979 | rv = transport_connect (rmt->transport_proto, tep); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 980 | if (rv < 0) |
| 981 | { |
| 982 | SESSION_DBG ("Transport failed to open connection."); |
| 983 | return VNET_API_ERROR_SESSION_CONNECT; |
| 984 | } |
| 985 | |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 986 | tc = transport_get_half_open (rmt->transport_proto, (u32) rv); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 987 | |
| 988 | /* If transport offers a stream service, only allocate session once the |
| 989 | * connection has been established. |
| 990 | * Add connection to half-open table and save app and tc index. The |
| 991 | * latter is needed to help establish the connection while the former |
| 992 | * is needed when the connect notify comes and we have to notify the |
| 993 | * external app |
| 994 | */ |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 995 | handle = (((u64) app_wrk_index) << 32) | (u64) tc->c_index; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 996 | session_lookup_add_half_open (tc, handle); |
| 997 | |
| 998 | /* Store api_context (opaque) for when the reply comes. Not the nicest |
| 999 | * thing but better than allocating a separate half-open pool. |
| 1000 | */ |
| 1001 | tc->s_index = opaque; |
Nathan Skrzypczak | a26349d | 2019-06-26 13:53:08 +0200 | [diff] [blame] | 1002 | if (transport_half_open_has_fifos (rmt->transport_proto)) |
| 1003 | return session_ho_stream_connect_notify (tc, 0 /* is_fail */ ); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1004 | return 0; |
| 1005 | } |
| 1006 | |
| 1007 | int |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1008 | 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] | 1009 | { |
Florin Coras | 5665ced | 2018-10-25 18:03:45 -0700 | [diff] [blame] | 1010 | session_endpoint_cfg_t *sep = (session_endpoint_cfg_t *) rmt; |
| 1011 | transport_endpoint_cfg_t *tep_cfg = session_endpoint_to_transport_cfg (sep); |
| 1012 | |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1013 | sep->app_wrk_index = app_wrk_index; |
Florin Coras | 8f89dd0 | 2018-03-05 16:53:07 -0800 | [diff] [blame] | 1014 | sep->opaque = opaque; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1015 | |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1016 | return transport_connect (rmt->transport_proto, tep_cfg); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1017 | } |
| 1018 | |
| 1019 | typedef int (*session_open_service_fn) (u32, session_endpoint_t *, u32); |
| 1020 | |
| 1021 | /* *INDENT-OFF* */ |
| 1022 | static session_open_service_fn session_open_srv_fns[TRANSPORT_N_SERVICES] = { |
| 1023 | session_open_vc, |
| 1024 | session_open_cl, |
| 1025 | session_open_app, |
| 1026 | }; |
| 1027 | /* *INDENT-ON* */ |
| 1028 | |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1029 | /** |
| 1030 | * Ask transport to open connection to remote transport endpoint. |
| 1031 | * |
| 1032 | * Stores handle for matching request with reply since the call can be |
| 1033 | * asynchronous. For instance, for TCP the 3-way handshake must complete |
| 1034 | * before reply comes. Session is only created once connection is established. |
| 1035 | * |
| 1036 | * @param app_index Index of the application requesting the connect |
| 1037 | * @param st Session type requested. |
| 1038 | * @param tep Remote transport endpoint |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1039 | * @param opaque Opaque data (typically, api_context) the application expects |
| 1040 | * on open completion. |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1041 | */ |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1042 | int |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1043 | session_open (u32 app_wrk_index, session_endpoint_t * rmt, u32 opaque) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1044 | { |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1045 | transport_service_type_t tst; |
| 1046 | tst = transport_protocol_service_type (rmt->transport_proto); |
Florin Coras | 1553197 | 2018-08-12 23:50:53 -0700 | [diff] [blame] | 1047 | return session_open_srv_fns[tst] (app_wrk_index, rmt, opaque); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1048 | } |
| 1049 | |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1050 | /** |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1051 | * Ask transport to listen on session endpoint. |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1052 | * |
| 1053 | * @param s Session for which listen will be called. Note that unlike |
| 1054 | * established sessions, listen sessions are not associated to a |
| 1055 | * thread. |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1056 | * @param sep Local endpoint to be listened on. |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1057 | */ |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1058 | int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1059 | session_listen (session_t * ls, session_endpoint_cfg_t * sep) |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1060 | { |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1061 | transport_endpoint_t *tep; |
Florin Coras | 74cac88 | 2018-09-07 09:13:15 -0700 | [diff] [blame] | 1062 | u32 tc_index, s_index; |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1063 | |
| 1064 | /* Transport bind/listen */ |
| 1065 | tep = session_endpoint_to_transport (sep); |
Florin Coras | 74cac88 | 2018-09-07 09:13:15 -0700 | [diff] [blame] | 1066 | s_index = ls->session_index; |
Florin Coras | d4295e6 | 2019-02-22 13:11:38 -0800 | [diff] [blame] | 1067 | tc_index = transport_start_listen (session_get_transport_proto (ls), |
| 1068 | s_index, tep); |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1069 | |
| 1070 | if (tc_index == (u32) ~ 0) |
| 1071 | return -1; |
| 1072 | |
Florin Coras | d4295e6 | 2019-02-22 13:11:38 -0800 | [diff] [blame] | 1073 | /* Attach transport to session. Lookup tables are populated by the app |
| 1074 | * 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] | 1075 | ls = listen_session_get (s_index); |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1076 | ls->connection_index = tc_index; |
| 1077 | |
Florin Coras | ab2f6db | 2018-08-31 14:31:41 -0700 | [diff] [blame] | 1078 | return 0; |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1079 | } |
| 1080 | |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1081 | /** |
| 1082 | * Ask transport to stop listening on local transport endpoint. |
| 1083 | * |
| 1084 | * @param s Session to stop listening on. It must be in state LISTENING. |
| 1085 | */ |
| 1086 | int |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1087 | session_stop_listen (session_t * s) |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1088 | { |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1089 | transport_proto_t tp = session_get_transport_proto (s); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1090 | transport_connection_t *tc; |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1091 | |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1092 | if (s->session_state != SESSION_STATE_LISTENING) |
| 1093 | return -1; |
| 1094 | |
| 1095 | tc = transport_get_listener (tp, s->connection_index); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1096 | if (!tc) |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1097 | return VNET_API_ERROR_ADDRESS_NOT_IN_USE; |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1098 | |
Nathan Skrzypczak | 2eed1a1 | 2019-07-04 14:26:21 +0200 | [diff] [blame] | 1099 | if (!(tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP)) |
| 1100 | session_lookup_del_connection (tc); |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1101 | transport_stop_listen (tp, s->connection_index); |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1102 | return 0; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1103 | } |
| 1104 | |
| 1105 | /** |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 1106 | * Initialize session closing procedure. |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1107 | * |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 1108 | * Request is always sent to session node to ensure that all outstanding |
| 1109 | * requests are served before transport is notified. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1110 | */ |
| 1111 | void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1112 | session_close (session_t * s) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1113 | { |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1114 | if (!s) |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 1115 | return; |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1116 | |
| 1117 | if (s->session_state >= SESSION_STATE_CLOSING) |
| 1118 | { |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 1119 | /* Session will only be removed once both app and transport |
| 1120 | * acknowledge the close */ |
| 1121 | if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED) |
| 1122 | session_program_transport_close (s); |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1123 | return; |
| 1124 | } |
| 1125 | |
Florin Coras | b2371c2 | 2018-05-31 17:14:10 -0700 | [diff] [blame] | 1126 | s->session_state = SESSION_STATE_CLOSING; |
Florin Coras | 5a2ec8f | 2018-12-27 11:53:11 -0800 | [diff] [blame] | 1127 | session_program_transport_close (s); |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 1128 | } |
| 1129 | |
| 1130 | /** |
| 1131 | * Notify transport the session can be disconnected. This should eventually |
| 1132 | * result in a delete notification that allows us to cleanup session state. |
| 1133 | * Called for both active/passive disconnects. |
| 1134 | * |
| 1135 | * Must be called from the session's thread. |
| 1136 | */ |
| 1137 | void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1138 | session_transport_close (session_t * s) |
Florin Coras | 2f8d8fa | 2018-01-26 06:36:04 -0800 | [diff] [blame] | 1139 | { |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 1140 | if (s->session_state >= SESSION_STATE_APP_CLOSED) |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 1141 | { |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 1142 | /* If transport is already closed, just free the session */ |
| 1143 | if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSED) |
| 1144 | session_free_w_fifos (s); |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 1145 | return; |
| 1146 | } |
Florin Coras | 78cc4b0 | 2018-12-20 18:24:49 -0800 | [diff] [blame] | 1147 | |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 1148 | /* If the tx queue wasn't drained, the transport can continue to try |
| 1149 | * sending the outstanding data (in closed state it cannot). It MUST however |
| 1150 | * at one point, either after sending everything or after a timeout, call |
| 1151 | * delete notify. This will finally lead to the complete cleanup of the |
| 1152 | * session. |
Florin Coras | 78cc4b0 | 2018-12-20 18:24:49 -0800 | [diff] [blame] | 1153 | */ |
Florin Coras | 692b949 | 2019-07-12 15:01:53 -0700 | [diff] [blame] | 1154 | s->session_state = SESSION_STATE_APP_CLOSED; |
Florin Coras | 78cc4b0 | 2018-12-20 18:24:49 -0800 | [diff] [blame] | 1155 | |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1156 | transport_close (session_get_transport_proto (s), s->connection_index, |
| 1157 | s->thread_index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1158 | } |
| 1159 | |
| 1160 | /** |
| 1161 | * Cleanup transport and session state. |
Florin Coras | d79b41e | 2017-03-04 05:37:52 -0800 | [diff] [blame] | 1162 | * |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1163 | * Notify transport of the cleanup and free the session. This should |
| 1164 | * be called only if transport reported some error and is already |
| 1165 | * closed. |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1166 | */ |
| 1167 | void |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1168 | session_transport_cleanup (session_t * s) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1169 | { |
Florin Coras | d79b41e | 2017-03-04 05:37:52 -0800 | [diff] [blame] | 1170 | s->session_state = SESSION_STATE_CLOSED; |
| 1171 | |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1172 | /* Delete from main lookup table before we axe the the transport */ |
| 1173 | session_lookup_del_session (s); |
Florin Coras | 1ee7830 | 2019-02-05 15:51:15 -0800 | [diff] [blame] | 1174 | transport_cleanup (session_get_transport_proto (s), s->connection_index, |
| 1175 | s->thread_index); |
Florin Coras | 25579b4 | 2018-06-06 17:55:02 -0700 | [diff] [blame] | 1176 | /* Since we called cleanup, no delete notification will come. So, make |
| 1177 | * sure the session is properly freed. */ |
Florin Coras | 568ebc7 | 2018-09-18 16:12:50 -0700 | [diff] [blame] | 1178 | session_free_w_fifos (s); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1179 | } |
| 1180 | |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1181 | /** |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1182 | * Allocate event queues in the shared-memory segment |
| 1183 | * |
| 1184 | * That can either be a newly created memfd segment, that will need to be |
| 1185 | * mapped by all stack users, or the binary api's svm region. The latter is |
| 1186 | * assumed to be already mapped. NOTE that this assumption DOES NOT hold if |
| 1187 | * api clients bootstrap shm api over sockets (i.e. use memfd segments) and |
| 1188 | * vpp uses api svm region for event queues. |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1189 | */ |
| 1190 | void |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1191 | session_vpp_event_queues_allocate (session_main_t * smm) |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1192 | { |
Florin Coras | 52207f1 | 2018-07-12 14:48:06 -0700 | [diff] [blame] | 1193 | u32 evt_q_length = 2048, evt_size = sizeof (session_event_t); |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1194 | ssvm_private_t *eqs = &smm->evt_qs_segment; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1195 | api_main_t *am = &api_main; |
Florin Coras | b4c1491 | 2019-02-09 13:51:25 -0800 | [diff] [blame] | 1196 | uword eqs_size = 64 << 20; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1197 | pid_t vpp_pid = getpid (); |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1198 | void *oldheap; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1199 | int i; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1200 | |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1201 | if (smm->configured_event_queue_length) |
| 1202 | evt_q_length = smm->configured_event_queue_length; |
| 1203 | |
| 1204 | if (smm->evt_qs_use_memfd_seg) |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1205 | { |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1206 | if (smm->evt_qs_segment_size) |
| 1207 | eqs_size = smm->evt_qs_segment_size; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1208 | |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1209 | eqs->ssvm_size = eqs_size; |
| 1210 | eqs->i_am_master = 1; |
| 1211 | eqs->my_pid = vpp_pid; |
| 1212 | eqs->name = format (0, "%s%c", "evt-qs-segment", 0); |
| 1213 | eqs->requested_va = smm->session_baseva; |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1214 | |
Florin Coras | 95e0ce0 | 2018-07-05 23:44:23 -0700 | [diff] [blame] | 1215 | if (ssvm_master_init (eqs, SSVM_SEGMENT_MEMFD)) |
| 1216 | { |
| 1217 | clib_warning ("failed to initialize queue segment"); |
| 1218 | return; |
| 1219 | } |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1220 | } |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1221 | |
| 1222 | if (smm->evt_qs_use_memfd_seg) |
| 1223 | oldheap = ssvm_push_heap (eqs->sh); |
| 1224 | else |
| 1225 | oldheap = svm_push_data_heap (am->vlib_rp); |
| 1226 | |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1227 | for (i = 0; i < vec_len (smm->wrk); i++) |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1228 | { |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 1229 | svm_msg_q_cfg_t _cfg, *cfg = &_cfg; |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 1230 | svm_msg_q_ring_cfg_t rc[SESSION_MQ_N_RINGS] = { |
| 1231 | {evt_q_length, evt_size, 0} |
| 1232 | , |
Florin Coras | b4c1491 | 2019-02-09 13:51:25 -0800 | [diff] [blame] | 1233 | {evt_q_length >> 1, 256, 0} |
Florin Coras | 3c2fed5 | 2018-07-04 04:15:05 -0700 | [diff] [blame] | 1234 | }; |
| 1235 | cfg->consumer_pid = 0; |
| 1236 | cfg->n_rings = 2; |
| 1237 | cfg->q_nitems = evt_q_length; |
| 1238 | cfg->ring_cfgs = rc; |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1239 | smm->wrk[i].vpp_event_queue = svm_msg_q_alloc (cfg); |
Florin Coras | 9936831 | 2018-08-02 10:45:44 -0700 | [diff] [blame] | 1240 | if (smm->evt_qs_use_memfd_seg) |
| 1241 | { |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1242 | 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] | 1243 | clib_warning ("eventfd returned"); |
| 1244 | } |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1245 | } |
| 1246 | |
| 1247 | if (smm->evt_qs_use_memfd_seg) |
| 1248 | ssvm_pop_heap (oldheap); |
| 1249 | else |
| 1250 | svm_pop_heap (oldheap); |
| 1251 | } |
| 1252 | |
| 1253 | ssvm_private_t * |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1254 | session_main_get_evt_q_segment (void) |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1255 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1256 | session_main_t *smm = &session_main; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1257 | if (smm->evt_qs_use_memfd_seg) |
| 1258 | return &smm->evt_qs_segment; |
| 1259 | return 0; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1260 | } |
| 1261 | |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1262 | u64 |
| 1263 | session_segment_handle (session_t * s) |
| 1264 | { |
| 1265 | svm_fifo_t *f; |
| 1266 | |
Aloys Augustin | cdb7170 | 2019-04-08 17:54:39 +0200 | [diff] [blame] | 1267 | if (!s->rx_fifo) |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1268 | return SESSION_INVALID_HANDLE; |
| 1269 | |
| 1270 | f = s->rx_fifo; |
| 1271 | return segment_manager_make_segment_handle (f->segment_manager, |
| 1272 | f->segment_index); |
| 1273 | } |
| 1274 | |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1275 | /* *INDENT-OFF* */ |
| 1276 | static session_fifo_rx_fn *session_tx_fns[TRANSPORT_TX_N_FNS] = { |
| 1277 | session_tx_fifo_peek_and_snd, |
| 1278 | session_tx_fifo_dequeue_and_snd, |
Florin Coras | 7fb0fe1 | 2018-04-09 09:24:52 -0700 | [diff] [blame] | 1279 | session_tx_fifo_dequeue_internal, |
| 1280 | session_tx_fifo_dequeue_and_snd |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1281 | }; |
| 1282 | /* *INDENT-ON* */ |
| 1283 | |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1284 | /** |
| 1285 | * Initialize session layer for given transport proto and ip version |
| 1286 | * |
| 1287 | * Allocates per session type (transport proto + ip version) data structures |
| 1288 | * and adds arc from session queue node to session type output node. |
| 1289 | */ |
| 1290 | void |
| 1291 | session_register_transport (transport_proto_t transport_proto, |
| 1292 | const transport_proto_vft_t * vft, u8 is_ip4, |
| 1293 | u32 output_node) |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1294 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1295 | session_main_t *smm = &session_main; |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1296 | session_type_t session_type; |
| 1297 | u32 next_index = ~0; |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1298 | |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1299 | session_type = session_type_from_proto_and_ip (transport_proto, is_ip4); |
| 1300 | |
| 1301 | vec_validate (smm->session_type_to_next, session_type); |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1302 | vec_validate (smm->session_tx_fns, session_type); |
| 1303 | |
| 1304 | /* *INDENT-OFF* */ |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1305 | if (output_node != ~0) |
| 1306 | { |
| 1307 | foreach_vlib_main (({ |
| 1308 | next_index = vlib_node_add_next (this_vlib_main, |
| 1309 | session_queue_node.index, |
| 1310 | output_node); |
| 1311 | })); |
| 1312 | } |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1313 | /* *INDENT-ON* */ |
| 1314 | |
| 1315 | smm->session_type_to_next[session_type] = next_index; |
Nathan Skrzypczak | e971bc9 | 2019-06-19 13:42:37 +0200 | [diff] [blame] | 1316 | smm->session_tx_fns[session_type] = |
| 1317 | session_tx_fns[vft->transport_options.tx_type]; |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1318 | } |
| 1319 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1320 | transport_connection_t * |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1321 | session_get_transport (session_t * s) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1322 | { |
Florin Coras | ade70e4 | 2017-10-14 18:56:41 -0700 | [diff] [blame] | 1323 | if (s->session_state != SESSION_STATE_LISTENING) |
Florin Coras | 4edc37e | 2019-02-04 23:01:34 -0800 | [diff] [blame] | 1324 | return transport_get_connection (session_get_transport_proto (s), |
| 1325 | s->connection_index, s->thread_index); |
| 1326 | else |
| 1327 | return transport_get_listener (session_get_transport_proto (s), |
| 1328 | s->connection_index); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1329 | } |
| 1330 | |
Aloys Augustin | cdb7170 | 2019-04-08 17:54:39 +0200 | [diff] [blame] | 1331 | void |
Florin Coras | 09d18c2 | 2019-04-24 11:10:02 -0700 | [diff] [blame] | 1332 | 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] | 1333 | { |
| 1334 | if (s->session_state != SESSION_STATE_LISTENING) |
| 1335 | return transport_get_endpoint (session_get_transport_proto (s), |
Florin Coras | 09d18c2 | 2019-04-24 11:10:02 -0700 | [diff] [blame] | 1336 | s->connection_index, s->thread_index, tep, |
| 1337 | is_lcl); |
Aloys Augustin | cdb7170 | 2019-04-08 17:54:39 +0200 | [diff] [blame] | 1338 | else |
| 1339 | return transport_get_listener_endpoint (session_get_transport_proto (s), |
Florin Coras | 09d18c2 | 2019-04-24 11:10:02 -0700 | [diff] [blame] | 1340 | s->connection_index, tep, is_lcl); |
Aloys Augustin | cdb7170 | 2019-04-08 17:54:39 +0200 | [diff] [blame] | 1341 | } |
| 1342 | |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1343 | transport_connection_t * |
Florin Coras | 288eaab | 2019-02-03 15:26:14 -0800 | [diff] [blame] | 1344 | listen_session_get_transport (session_t * s) |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1345 | { |
Florin Coras | 4edc37e | 2019-02-04 23:01:34 -0800 | [diff] [blame] | 1346 | return transport_get_listener (session_get_transport_proto (s), |
| 1347 | s->connection_index); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1348 | } |
| 1349 | |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 1350 | void |
| 1351 | session_flush_frames_main_thread (vlib_main_t * vm) |
| 1352 | { |
| 1353 | ASSERT (vlib_get_thread_index () == 0); |
| 1354 | vlib_process_signal_event_mt (vm, session_queue_process_node.index, |
| 1355 | SESSION_Q_PROCESS_FLUSH_FRAMES, 0); |
| 1356 | } |
| 1357 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1358 | static clib_error_t * |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1359 | session_manager_main_enable (vlib_main_t * vm) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1360 | { |
Florin Coras | a332c46 | 2018-01-31 06:52:17 -0800 | [diff] [blame] | 1361 | 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] | 1362 | session_main_t *smm = &session_main; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1363 | vlib_thread_main_t *vtm = vlib_get_thread_main (); |
Florin Coras | 371ca50 | 2018-02-21 12:07:41 -0800 | [diff] [blame] | 1364 | u32 num_threads, preallocated_sessions_per_worker; |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1365 | session_worker_t *wrk; |
Florin Coras | d5c604d | 2019-03-18 09:06:35 -0700 | [diff] [blame] | 1366 | int i; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1367 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1368 | num_threads = 1 /* main thread */ + vtm->n_threads; |
| 1369 | |
| 1370 | if (num_threads < 1) |
| 1371 | return clib_error_return (0, "n_thread_stacks not set"); |
| 1372 | |
Florin Coras | 5f56d73 | 2018-10-30 10:21:59 -0700 | [diff] [blame] | 1373 | /* Allocate cache line aligned worker contexts */ |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1374 | vec_validate_aligned (smm->wrk, num_threads - 1, CLIB_CACHE_LINE_BYTES); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1375 | |
Dave Barach | acd2a6a | 2017-05-16 17:41:34 -0400 | [diff] [blame] | 1376 | for (i = 0; i < num_threads; i++) |
| 1377 | { |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1378 | wrk = &smm->wrk[i]; |
Florin Coras | 2062ec0 | 2019-07-15 13:15:18 -0700 | [diff] [blame] | 1379 | wrk->new_head = clib_llist_make_head (wrk->event_elts, evt_list); |
| 1380 | wrk->pending_head = clib_llist_make_head (wrk->event_elts, evt_list); |
| 1381 | wrk->postponed_head = clib_llist_make_head (wrk->event_elts, evt_list); |
| 1382 | wrk->disconnects_head = clib_llist_make_head (wrk->event_elts, |
| 1383 | evt_list); |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1384 | wrk->last_vlib_time = vlib_time_now (vlib_mains[i]); |
Florin Coras | c44a558 | 2018-11-01 16:30:54 -0700 | [diff] [blame] | 1385 | wrk->dispatch_period = 500e-6; |
Florin Coras | d67f112 | 2018-05-21 17:47:40 -0700 | [diff] [blame] | 1386 | |
Florin Coras | 29ca16f | 2017-11-02 18:14:17 -0400 | [diff] [blame] | 1387 | if (num_threads > 1) |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1388 | clib_rwlock_init (&smm->wrk[i].peekers_rw_locks); |
Dave Barach | acd2a6a | 2017-05-16 17:41:34 -0400 | [diff] [blame] | 1389 | } |
| 1390 | |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1391 | /* Allocate vpp event queues segment and queue */ |
| 1392 | session_vpp_event_queues_allocate (smm); |
| 1393 | |
| 1394 | /* Initialize fifo segment main baseva and timeout */ |
Florin Coras | a332c46 | 2018-01-31 06:52:17 -0800 | [diff] [blame] | 1395 | sm_args->baseva = smm->session_baseva + smm->evt_qs_segment_size; |
| 1396 | sm_args->size = smm->session_va_space_size; |
| 1397 | segment_manager_main_init (sm_args); |
Florin Coras | 6cf30ad | 2017-04-04 23:08:23 -0700 | [diff] [blame] | 1398 | |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1399 | /* Preallocate sessions */ |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1400 | if (smm->preallocated_sessions) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1401 | { |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1402 | if (num_threads == 1) |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1403 | { |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1404 | pool_init_fixed (smm->wrk[0].sessions, smm->preallocated_sessions); |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1405 | } |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1406 | else |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1407 | { |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1408 | int j; |
| 1409 | preallocated_sessions_per_worker = |
| 1410 | (1.1 * (f64) smm->preallocated_sessions / |
| 1411 | (f64) (num_threads - 1)); |
| 1412 | |
| 1413 | for (j = 1; j < num_threads; j++) |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1414 | { |
Florin Coras | 5a7ca7b | 2018-10-30 12:01:48 -0700 | [diff] [blame] | 1415 | pool_init_fixed (smm->wrk[j].sessions, |
Dave Barach | b7f1faa | 2017-08-29 11:43:37 -0400 | [diff] [blame] | 1416 | preallocated_sessions_per_worker); |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1417 | } |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1418 | } |
| 1419 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1420 | |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 1421 | session_lookup_init (); |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1422 | app_namespaces_init (); |
Florin Coras | 3cbc04b | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1423 | transport_init (); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1424 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1425 | smm->is_enabled = 1; |
| 1426 | |
Florin Coras | 561af9b | 2017-12-09 10:19:43 -0800 | [diff] [blame] | 1427 | /* Enable transports */ |
| 1428 | transport_enable_disable (vm, 1); |
Florin Coras | d67f112 | 2018-05-21 17:47:40 -0700 | [diff] [blame] | 1429 | transport_init_tx_pacers_period (); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1430 | return 0; |
| 1431 | } |
| 1432 | |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1433 | void |
| 1434 | session_node_enable_disable (u8 is_en) |
| 1435 | { |
| 1436 | u8 state = is_en ? VLIB_NODE_STATE_POLLING : VLIB_NODE_STATE_DISABLED; |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 1437 | vlib_thread_main_t *vtm = vlib_get_thread_main (); |
| 1438 | u8 have_workers = vtm->n_threads != 0; |
| 1439 | |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1440 | /* *INDENT-OFF* */ |
| 1441 | foreach_vlib_main (({ |
Florin Coras | fd542f1 | 2018-05-16 19:28:24 -0700 | [diff] [blame] | 1442 | if (have_workers && ii == 0) |
| 1443 | { |
| 1444 | vlib_node_set_state (this_vlib_main, session_queue_process_node.index, |
| 1445 | state); |
| 1446 | if (is_en) |
| 1447 | { |
| 1448 | vlib_node_t *n = vlib_get_node (this_vlib_main, |
| 1449 | session_queue_process_node.index); |
| 1450 | vlib_start_process (this_vlib_main, n->runtime_index); |
| 1451 | } |
| 1452 | else |
| 1453 | { |
| 1454 | vlib_process_signal_event_mt (this_vlib_main, |
| 1455 | session_queue_process_node.index, |
| 1456 | SESSION_Q_PROCESS_STOP, 0); |
| 1457 | } |
| 1458 | |
| 1459 | continue; |
| 1460 | } |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1461 | vlib_node_set_state (this_vlib_main, session_queue_node.index, |
| 1462 | state); |
| 1463 | })); |
| 1464 | /* *INDENT-ON* */ |
| 1465 | } |
| 1466 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1467 | clib_error_t * |
| 1468 | vnet_session_enable_disable (vlib_main_t * vm, u8 is_en) |
| 1469 | { |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1470 | clib_error_t *error = 0; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1471 | if (is_en) |
| 1472 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1473 | if (session_main.is_enabled) |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1474 | return 0; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1475 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1476 | error = session_manager_main_enable (vm); |
Vladimir Kropylev | a2e4451 | 2019-07-16 21:32:41 +0300 | [diff] [blame] | 1477 | session_node_enable_disable (is_en); |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1478 | } |
| 1479 | else |
| 1480 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1481 | session_main.is_enabled = 0; |
Florin Coras | a546481 | 2017-04-19 13:00:05 -0700 | [diff] [blame] | 1482 | session_node_enable_disable (is_en); |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1483 | } |
| 1484 | |
Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1485 | return error; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1486 | } |
| 1487 | |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1488 | clib_error_t * |
| 1489 | session_manager_main_init (vlib_main_t * vm) |
| 1490 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1491 | session_main_t *smm = &session_main; |
David Johnson | d9818dd | 2018-12-14 14:53:41 -0500 | [diff] [blame] | 1492 | smm->session_baseva = HIGH_SEGMENT_BASEVA; |
| 1493 | #if (HIGH_SEGMENT_BASEVA > (4ULL << 30)) |
| 1494 | smm->session_va_space_size = 128ULL << 30; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1495 | smm->evt_qs_segment_size = 64 << 20; |
David Johnson | d9818dd | 2018-12-14 14:53:41 -0500 | [diff] [blame] | 1496 | #else |
| 1497 | smm->session_va_space_size = 128 << 20; |
| 1498 | smm->evt_qs_segment_size = 1 << 20; |
| 1499 | #endif |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1500 | smm->is_enabled = 0; |
Florin Coras | e04c299 | 2017-03-01 08:17:34 -0800 | [diff] [blame] | 1501 | return 0; |
| 1502 | } |
| 1503 | |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1504 | VLIB_INIT_FUNCTION (session_manager_main_init); |
| 1505 | |
| 1506 | static clib_error_t * |
| 1507 | session_config_fn (vlib_main_t * vm, unformat_input_t * input) |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1508 | { |
Florin Coras | 31c9955 | 2019-03-01 13:00:58 -0800 | [diff] [blame] | 1509 | session_main_t *smm = &session_main; |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1510 | u32 nitems; |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1511 | uword tmp; |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1512 | |
| 1513 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 1514 | { |
| 1515 | if (unformat (input, "event-queue-length %d", &nitems)) |
| 1516 | { |
| 1517 | if (nitems >= 2048) |
| 1518 | smm->configured_event_queue_length = nitems; |
| 1519 | else |
| 1520 | clib_warning ("event queue length %d too small, ignored", nitems); |
| 1521 | } |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1522 | else if (unformat (input, "preallocated-sessions %d", |
| 1523 | &smm->preallocated_sessions)) |
Dave Barach | 2c25a62 | 2017-06-26 11:35:07 -0400 | [diff] [blame] | 1524 | ; |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 1525 | else if (unformat (input, "v4-session-table-buckets %d", |
| 1526 | &smm->configured_v4_session_table_buckets)) |
| 1527 | ; |
| 1528 | else if (unformat (input, "v4-halfopen-table-buckets %d", |
| 1529 | &smm->configured_v4_halfopen_table_buckets)) |
| 1530 | ; |
| 1531 | else if (unformat (input, "v6-session-table-buckets %d", |
| 1532 | &smm->configured_v6_session_table_buckets)) |
| 1533 | ; |
| 1534 | else if (unformat (input, "v6-halfopen-table-buckets %d", |
| 1535 | &smm->configured_v6_halfopen_table_buckets)) |
| 1536 | ; |
| 1537 | else if (unformat (input, "v4-session-table-memory %U", |
| 1538 | unformat_memory_size, &tmp)) |
| 1539 | { |
| 1540 | if (tmp >= 0x100000000) |
| 1541 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1542 | tmp, tmp); |
| 1543 | smm->configured_v4_session_table_memory = tmp; |
| 1544 | } |
| 1545 | else if (unformat (input, "v4-halfopen-table-memory %U", |
| 1546 | unformat_memory_size, &tmp)) |
| 1547 | { |
| 1548 | if (tmp >= 0x100000000) |
| 1549 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1550 | tmp, tmp); |
| 1551 | smm->configured_v4_halfopen_table_memory = tmp; |
| 1552 | } |
| 1553 | else if (unformat (input, "v6-session-table-memory %U", |
| 1554 | unformat_memory_size, &tmp)) |
| 1555 | { |
| 1556 | if (tmp >= 0x100000000) |
| 1557 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1558 | tmp, tmp); |
| 1559 | smm->configured_v6_session_table_memory = tmp; |
| 1560 | } |
| 1561 | else if (unformat (input, "v6-halfopen-table-memory %U", |
| 1562 | unformat_memory_size, &tmp)) |
| 1563 | { |
| 1564 | if (tmp >= 0x100000000) |
| 1565 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1566 | tmp, tmp); |
| 1567 | smm->configured_v6_halfopen_table_memory = tmp; |
| 1568 | } |
Florin Coras | 93e6580 | 2017-11-29 00:07:11 -0500 | [diff] [blame] | 1569 | else if (unformat (input, "local-endpoints-table-memory %U", |
| 1570 | unformat_memory_size, &tmp)) |
| 1571 | { |
| 1572 | if (tmp >= 0x100000000) |
| 1573 | return clib_error_return (0, "memory size %llx (%lld) too large", |
| 1574 | tmp, tmp); |
| 1575 | smm->local_endpoints_table_memory = tmp; |
| 1576 | } |
| 1577 | else if (unformat (input, "local-endpoints-table-buckets %d", |
| 1578 | &smm->local_endpoints_table_buckets)) |
| 1579 | ; |
Florin Coras | b384b54 | 2018-01-15 01:08:33 -0800 | [diff] [blame] | 1580 | else if (unformat (input, "evt_qs_memfd_seg")) |
| 1581 | smm->evt_qs_use_memfd_seg = 1; |
Florin Coras | b4c1491 | 2019-02-09 13:51:25 -0800 | [diff] [blame] | 1582 | else if (unformat (input, "evt_qs_seg_size %U", unformat_memory_size, |
| 1583 | &smm->evt_qs_segment_size)) |
| 1584 | ; |
Dave Barach | 10d8cc6 | 2017-05-30 09:30:07 -0400 | [diff] [blame] | 1585 | else |
| 1586 | return clib_error_return (0, "unknown input `%U'", |
| 1587 | format_unformat_error, input); |
| 1588 | } |
| 1589 | return 0; |
| 1590 | } |
| 1591 | |
| 1592 | VLIB_CONFIG_FUNCTION (session_config_fn, "session"); |
| 1593 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1594 | /* |
| 1595 | * fd.io coding-style-patch-verification: ON |
| 1596 | * |
| 1597 | * Local Variables: |
| 1598 | * eval: (c-set-style "gnu") |
| 1599 | * End: |
| 1600 | */ |