Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2017 Cisco and/or its affiliates. |
| 3 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | * you may not use this file except in compliance with the License. |
| 5 | * You may obtain a copy of the License at: |
| 6 | * |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 9 | * Unless required by applicable law or agreed to in writing, software |
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | * See the License for the specific language governing permissions and |
| 13 | * limitations under the License. |
| 14 | */ |
| 15 | |
| 16 | /** Generate typed init functions for multiple hash table styles... */ |
| 17 | #include <vppinfra/bihash_16_8.h> |
| 18 | #include <vppinfra/bihash_template.h> |
| 19 | |
| 20 | #include <vppinfra/bihash_template.c> |
| 21 | |
| 22 | #undef __included_bihash_template_h__ |
| 23 | |
| 24 | #include <vppinfra/bihash_48_8.h> |
| 25 | #include <vppinfra/bihash_template.h> |
| 26 | |
| 27 | #include <vppinfra/bihash_template.c> |
| 28 | #include <vnet/session/session_lookup.h> |
| 29 | #include <vnet/session/session.h> |
| 30 | |
| 31 | static session_lookup_t session_lookup; |
| 32 | extern transport_proto_vft_t *tp_vfts; |
| 33 | |
| 34 | /* *INDENT-OFF* */ |
| 35 | /* 16 octets */ |
| 36 | typedef CLIB_PACKED (struct { |
| 37 | union |
| 38 | { |
| 39 | struct |
| 40 | { |
| 41 | ip4_address_t src; |
| 42 | ip4_address_t dst; |
| 43 | u16 src_port; |
| 44 | u16 dst_port; |
| 45 | /* align by making this 4 octets even though its a 1-bit field |
| 46 | * NOTE: avoid key overlap with other transports that use 5 tuples for |
| 47 | * session identification. |
| 48 | */ |
| 49 | u32 proto; |
| 50 | }; |
| 51 | u64 as_u64[2]; |
| 52 | }; |
| 53 | }) v4_connection_key_t; |
| 54 | |
| 55 | typedef CLIB_PACKED (struct { |
| 56 | union |
| 57 | { |
| 58 | struct |
| 59 | { |
| 60 | /* 48 octets */ |
| 61 | ip6_address_t src; |
| 62 | ip6_address_t dst; |
| 63 | u16 src_port; |
| 64 | u16 dst_port; |
| 65 | u32 proto; |
| 66 | u64 unused; |
| 67 | }; |
| 68 | u64 as_u64[6]; |
| 69 | }; |
| 70 | }) v6_connection_key_t; |
| 71 | /* *INDENT-ON* */ |
| 72 | |
| 73 | typedef clib_bihash_kv_16_8_t session_kv4_t; |
| 74 | typedef clib_bihash_kv_48_8_t session_kv6_t; |
| 75 | |
| 76 | always_inline void |
| 77 | make_v4_ss_kv (session_kv4_t * kv, ip4_address_t * lcl, ip4_address_t * rmt, |
| 78 | u16 lcl_port, u16 rmt_port, u8 proto) |
| 79 | { |
| 80 | v4_connection_key_t *key = (v4_connection_key_t *) kv->key; |
| 81 | |
| 82 | key->src.as_u32 = lcl->as_u32; |
| 83 | key->dst.as_u32 = rmt->as_u32; |
| 84 | key->src_port = lcl_port; |
| 85 | key->dst_port = rmt_port; |
| 86 | key->proto = proto; |
| 87 | |
| 88 | kv->value = ~0ULL; |
| 89 | } |
| 90 | |
| 91 | always_inline void |
| 92 | make_v4_listener_kv (session_kv4_t * kv, ip4_address_t * lcl, u16 lcl_port, |
| 93 | u8 proto) |
| 94 | { |
| 95 | v4_connection_key_t *key = (v4_connection_key_t *) kv->key; |
| 96 | |
| 97 | key->src.as_u32 = lcl->as_u32; |
| 98 | key->dst.as_u32 = 0; |
| 99 | key->src_port = lcl_port; |
| 100 | key->dst_port = 0; |
| 101 | key->proto = proto; |
| 102 | |
| 103 | kv->value = ~0ULL; |
| 104 | } |
| 105 | |
| 106 | always_inline void |
| 107 | make_v4_ss_kv_from_tc (session_kv4_t * kv, transport_connection_t * t) |
| 108 | { |
| 109 | return make_v4_ss_kv (kv, &t->lcl_ip.ip4, &t->rmt_ip.ip4, t->lcl_port, |
Florin Coras | 6881062 | 2017-07-24 17:40:28 -0700 | [diff] [blame] | 110 | t->rmt_port, t->transport_proto); |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | always_inline void |
| 114 | make_v6_ss_kv (session_kv6_t * kv, ip6_address_t * lcl, ip6_address_t * rmt, |
| 115 | u16 lcl_port, u16 rmt_port, u8 proto) |
| 116 | { |
| 117 | v6_connection_key_t *key = (v6_connection_key_t *) kv->key; |
| 118 | |
| 119 | key->src.as_u64[0] = lcl->as_u64[0]; |
| 120 | key->src.as_u64[1] = lcl->as_u64[1]; |
| 121 | key->dst.as_u64[0] = rmt->as_u64[0]; |
| 122 | key->dst.as_u64[1] = rmt->as_u64[1]; |
| 123 | key->src_port = lcl_port; |
| 124 | key->dst_port = rmt_port; |
| 125 | key->proto = proto; |
| 126 | key->unused = 0; |
| 127 | |
| 128 | kv->value = ~0ULL; |
| 129 | } |
| 130 | |
| 131 | always_inline void |
| 132 | make_v6_listener_kv (session_kv6_t * kv, ip6_address_t * lcl, u16 lcl_port, |
| 133 | u8 proto) |
| 134 | { |
| 135 | v6_connection_key_t *key = (v6_connection_key_t *) kv->key; |
| 136 | |
| 137 | key->src.as_u64[0] = lcl->as_u64[0]; |
| 138 | key->src.as_u64[1] = lcl->as_u64[1]; |
| 139 | key->dst.as_u64[0] = 0; |
| 140 | key->dst.as_u64[1] = 0; |
| 141 | key->src_port = lcl_port; |
| 142 | key->dst_port = 0; |
| 143 | key->proto = proto; |
| 144 | key->unused = 0; |
| 145 | |
| 146 | kv->value = ~0ULL; |
| 147 | } |
| 148 | |
| 149 | always_inline void |
| 150 | make_v6_ss_kv_from_tc (session_kv6_t * kv, transport_connection_t * t) |
| 151 | { |
| 152 | make_v6_ss_kv (kv, &t->lcl_ip.ip6, &t->rmt_ip.ip6, t->lcl_port, |
Florin Coras | 6881062 | 2017-07-24 17:40:28 -0700 | [diff] [blame] | 153 | t->rmt_port, t->transport_proto); |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | /* |
| 157 | * Session lookup key; (src-ip, dst-ip, src-port, dst-port, session-type) |
| 158 | * Value: (owner thread index << 32 | session_index); |
| 159 | */ |
| 160 | void |
| 161 | stream_session_table_add_for_tc (transport_connection_t * tc, u64 value) |
| 162 | { |
| 163 | session_lookup_t *sl = &session_lookup; |
| 164 | session_kv4_t kv4; |
| 165 | session_kv6_t kv6; |
| 166 | |
Florin Coras | 6881062 | 2017-07-24 17:40:28 -0700 | [diff] [blame] | 167 | if (tc->is_ip4) |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 168 | { |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 169 | make_v4_ss_kv_from_tc (&kv4, tc); |
| 170 | kv4.value = value; |
| 171 | clib_bihash_add_del_16_8 (&sl->v4_session_hash, &kv4, 1 /* is_add */ ); |
Florin Coras | 6881062 | 2017-07-24 17:40:28 -0700 | [diff] [blame] | 172 | } |
| 173 | else |
| 174 | { |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 175 | make_v6_ss_kv_from_tc (&kv6, tc); |
| 176 | kv6.value = value; |
| 177 | clib_bihash_add_del_48_8 (&sl->v6_session_hash, &kv6, 1 /* is_add */ ); |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 178 | } |
| 179 | } |
| 180 | |
| 181 | void |
| 182 | stream_session_table_add (session_manager_main_t * smm, stream_session_t * s, |
| 183 | u64 value) |
| 184 | { |
| 185 | transport_connection_t *tc; |
| 186 | |
| 187 | tc = tp_vfts[s->session_type].get_connection (s->connection_index, |
| 188 | s->thread_index); |
| 189 | stream_session_table_add_for_tc (tc, value); |
| 190 | } |
| 191 | |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 192 | int |
| 193 | stream_session_table_del_for_tc (transport_connection_t * tc) |
| 194 | { |
| 195 | session_lookup_t *sl = &session_lookup; |
| 196 | session_kv4_t kv4; |
| 197 | session_kv6_t kv6; |
Florin Coras | 6881062 | 2017-07-24 17:40:28 -0700 | [diff] [blame] | 198 | |
| 199 | if (tc->is_ip4) |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 200 | { |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 201 | make_v4_ss_kv_from_tc (&kv4, tc); |
| 202 | return clib_bihash_add_del_16_8 (&sl->v4_session_hash, &kv4, |
| 203 | 0 /* is_add */ ); |
Florin Coras | 6881062 | 2017-07-24 17:40:28 -0700 | [diff] [blame] | 204 | } |
| 205 | else |
| 206 | { |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 207 | make_v6_ss_kv_from_tc (&kv6, tc); |
| 208 | return clib_bihash_add_del_48_8 (&sl->v6_session_hash, &kv6, |
| 209 | 0 /* is_add */ ); |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | int |
| 216 | stream_session_table_del (stream_session_t * s) |
| 217 | { |
| 218 | transport_connection_t *ts; |
| 219 | ts = tp_vfts[s->session_type].get_connection (s->connection_index, |
| 220 | s->thread_index); |
| 221 | return stream_session_table_del_for_tc (ts); |
| 222 | } |
| 223 | |
Florin Coras | 6881062 | 2017-07-24 17:40:28 -0700 | [diff] [blame] | 224 | |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 225 | void |
Florin Coras | 6881062 | 2017-07-24 17:40:28 -0700 | [diff] [blame] | 226 | stream_session_half_open_table_add (transport_connection_t * tc, u64 value) |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 227 | { |
| 228 | session_lookup_t *sl = &session_lookup; |
| 229 | session_kv4_t kv4; |
| 230 | session_kv6_t kv6; |
| 231 | |
Florin Coras | 6881062 | 2017-07-24 17:40:28 -0700 | [diff] [blame] | 232 | if (tc->is_ip4) |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 233 | { |
Florin Coras | 6881062 | 2017-07-24 17:40:28 -0700 | [diff] [blame] | 234 | make_v4_ss_kv_from_tc (&kv4, tc); |
| 235 | kv4.value = value; |
| 236 | clib_bihash_add_del_16_8 (&sl->v4_half_open_hash, &kv4, |
| 237 | 1 /* is_add */ ); |
| 238 | } |
| 239 | else |
| 240 | { |
| 241 | make_v6_ss_kv_from_tc (&kv6, tc); |
| 242 | kv6.value = value; |
| 243 | clib_bihash_add_del_48_8 (&sl->v6_half_open_hash, &kv6, |
| 244 | 1 /* is_add */ ); |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | void |
| 249 | stream_session_half_open_table_del (transport_connection_t * tc) |
| 250 | { |
| 251 | session_lookup_t *sl = &session_lookup; |
| 252 | session_kv4_t kv4; |
| 253 | session_kv6_t kv6; |
| 254 | |
| 255 | if (tc->is_ip4) |
| 256 | { |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 257 | make_v4_ss_kv_from_tc (&kv4, tc); |
| 258 | clib_bihash_add_del_16_8 (&sl->v4_half_open_hash, &kv4, |
| 259 | 0 /* is_add */ ); |
Florin Coras | 6881062 | 2017-07-24 17:40:28 -0700 | [diff] [blame] | 260 | } |
| 261 | else |
| 262 | { |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 263 | make_v6_ss_kv_from_tc (&kv6, tc); |
| 264 | clib_bihash_add_del_48_8 (&sl->v6_half_open_hash, &kv6, |
| 265 | 0 /* is_add */ ); |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 266 | } |
| 267 | } |
| 268 | |
| 269 | stream_session_t * |
| 270 | stream_session_lookup_listener4 (ip4_address_t * lcl, u16 lcl_port, u8 proto) |
| 271 | { |
| 272 | session_lookup_t *sl = &session_lookup; |
| 273 | session_kv4_t kv4; |
| 274 | int rv; |
| 275 | |
| 276 | make_v4_listener_kv (&kv4, lcl, lcl_port, proto); |
| 277 | rv = clib_bihash_search_inline_16_8 (&sl->v4_session_hash, &kv4); |
| 278 | if (rv == 0) |
| 279 | return session_manager_get_listener (proto, (u32) kv4.value); |
| 280 | |
| 281 | /* Zero out the lcl ip */ |
| 282 | kv4.key[0] = 0; |
| 283 | rv = clib_bihash_search_inline_16_8 (&sl->v4_session_hash, &kv4); |
| 284 | if (rv == 0) |
| 285 | return session_manager_get_listener (proto, (u32) kv4.value); |
| 286 | |
| 287 | return 0; |
| 288 | } |
| 289 | |
| 290 | /** Looks up a session based on the 5-tuple passed as argument. |
| 291 | * |
| 292 | * First it tries to find an established session, if this fails, it tries |
| 293 | * finding a listener session if this fails, it tries a lookup with a |
| 294 | * wildcarded local source (listener bound to all interfaces) |
| 295 | */ |
| 296 | stream_session_t * |
| 297 | stream_session_lookup4 (ip4_address_t * lcl, ip4_address_t * rmt, |
| 298 | u16 lcl_port, u16 rmt_port, u8 proto) |
| 299 | { |
| 300 | session_lookup_t *sl = &session_lookup; |
| 301 | session_kv4_t kv4; |
| 302 | stream_session_t *s; |
| 303 | int rv; |
| 304 | |
| 305 | /* Lookup session amongst established ones */ |
| 306 | make_v4_ss_kv (&kv4, lcl, rmt, lcl_port, rmt_port, proto); |
| 307 | rv = clib_bihash_search_inline_16_8 (&sl->v4_session_hash, &kv4); |
| 308 | if (rv == 0) |
| 309 | return stream_session_get_from_handle (kv4.value); |
| 310 | |
| 311 | /* If nothing is found, check if any listener is available */ |
| 312 | if ((s = stream_session_lookup_listener4 (lcl, lcl_port, proto))) |
| 313 | return s; |
| 314 | |
| 315 | /* Finally, try half-open connections */ |
| 316 | rv = clib_bihash_search_inline_16_8 (&sl->v4_half_open_hash, &kv4); |
| 317 | if (rv == 0) |
| 318 | return stream_session_get_from_handle (kv4.value); |
| 319 | return 0; |
| 320 | } |
| 321 | |
| 322 | stream_session_t * |
| 323 | stream_session_lookup_listener6 (ip6_address_t * lcl, u16 lcl_port, u8 proto) |
| 324 | { |
| 325 | session_lookup_t *sl = &session_lookup; |
| 326 | session_kv6_t kv6; |
| 327 | int rv; |
| 328 | |
| 329 | make_v6_listener_kv (&kv6, lcl, lcl_port, proto); |
| 330 | rv = clib_bihash_search_inline_48_8 (&sl->v6_session_hash, &kv6); |
| 331 | if (rv == 0) |
| 332 | return session_manager_get_listener (proto, (u32) kv6.value); |
| 333 | |
| 334 | /* Zero out the lcl ip */ |
| 335 | kv6.key[0] = kv6.key[1] = 0; |
| 336 | rv = clib_bihash_search_inline_48_8 (&sl->v6_session_hash, &kv6); |
| 337 | if (rv == 0) |
| 338 | return session_manager_get_listener (proto, (u32) kv6.value); |
| 339 | |
| 340 | return 0; |
| 341 | } |
| 342 | |
| 343 | /* Looks up a session based on the 5-tuple passed as argument. |
| 344 | * First it tries to find an established session, if this fails, it tries |
| 345 | * finding a listener session if this fails, it tries a lookup with a |
| 346 | * wildcarded local source (listener bound to all interfaces) */ |
| 347 | stream_session_t * |
| 348 | stream_session_lookup6 (ip6_address_t * lcl, ip6_address_t * rmt, |
| 349 | u16 lcl_port, u16 rmt_port, u8 proto) |
| 350 | { |
| 351 | session_lookup_t *sl = &session_lookup; |
| 352 | session_kv6_t kv6; |
| 353 | stream_session_t *s; |
| 354 | int rv; |
| 355 | |
| 356 | make_v6_ss_kv (&kv6, lcl, rmt, lcl_port, rmt_port, proto); |
| 357 | rv = clib_bihash_search_inline_48_8 (&sl->v6_session_hash, &kv6); |
| 358 | if (rv == 0) |
| 359 | return stream_session_get_from_handle (kv6.value); |
| 360 | |
| 361 | /* If nothing is found, check if any listener is available */ |
| 362 | if ((s = stream_session_lookup_listener6 (lcl, lcl_port, proto))) |
| 363 | return s; |
| 364 | |
| 365 | /* Finally, try half-open connections */ |
| 366 | rv = clib_bihash_search_inline_48_8 (&sl->v6_half_open_hash, &kv6); |
| 367 | if (rv == 0) |
| 368 | return stream_session_get_from_handle (kv6.value); |
| 369 | return 0; |
| 370 | } |
| 371 | |
| 372 | stream_session_t * |
| 373 | stream_session_lookup_listener (ip46_address_t * lcl, u16 lcl_port, u8 proto) |
| 374 | { |
| 375 | switch (proto) |
| 376 | { |
| 377 | case SESSION_TYPE_IP4_UDP: |
| 378 | case SESSION_TYPE_IP4_TCP: |
| 379 | return stream_session_lookup_listener4 (&lcl->ip4, lcl_port, proto); |
| 380 | break; |
| 381 | case SESSION_TYPE_IP6_UDP: |
| 382 | case SESSION_TYPE_IP6_TCP: |
| 383 | return stream_session_lookup_listener6 (&lcl->ip6, lcl_port, proto); |
| 384 | break; |
| 385 | } |
| 386 | return 0; |
| 387 | } |
| 388 | |
| 389 | u64 |
| 390 | stream_session_half_open_lookup_handle (ip46_address_t * lcl, |
| 391 | ip46_address_t * rmt, u16 lcl_port, |
| 392 | u16 rmt_port, u8 proto) |
| 393 | { |
| 394 | session_lookup_t *sl = &session_lookup; |
| 395 | session_kv4_t kv4; |
| 396 | session_kv6_t kv6; |
| 397 | int rv; |
| 398 | |
| 399 | switch (proto) |
| 400 | { |
| 401 | case SESSION_TYPE_IP4_UDP: |
| 402 | case SESSION_TYPE_IP4_TCP: |
| 403 | make_v4_ss_kv (&kv4, &lcl->ip4, &rmt->ip4, lcl_port, rmt_port, proto); |
| 404 | rv = clib_bihash_search_inline_16_8 (&sl->v4_half_open_hash, &kv4); |
| 405 | |
| 406 | if (rv == 0) |
| 407 | return kv4.value; |
| 408 | |
| 409 | return HALF_OPEN_LOOKUP_INVALID_VALUE; |
| 410 | break; |
| 411 | case SESSION_TYPE_IP6_UDP: |
| 412 | case SESSION_TYPE_IP6_TCP: |
| 413 | make_v6_ss_kv (&kv6, &lcl->ip6, &rmt->ip6, lcl_port, rmt_port, proto); |
| 414 | rv = clib_bihash_search_inline_48_8 (&sl->v6_half_open_hash, &kv6); |
| 415 | |
| 416 | if (rv == 0) |
| 417 | return kv6.value; |
| 418 | |
| 419 | return HALF_OPEN_LOOKUP_INVALID_VALUE; |
| 420 | break; |
| 421 | } |
| 422 | return HALF_OPEN_LOOKUP_INVALID_VALUE; |
| 423 | } |
| 424 | |
| 425 | transport_connection_t * |
| 426 | stream_session_half_open_lookup (ip46_address_t * lcl, ip46_address_t * rmt, |
| 427 | u16 lcl_port, u16 rmt_port, u8 proto) |
| 428 | { |
| 429 | u64 handle; |
| 430 | handle = |
| 431 | stream_session_half_open_lookup_handle (lcl, rmt, lcl_port, rmt_port, |
| 432 | proto); |
| 433 | if (handle != HALF_OPEN_LOOKUP_INVALID_VALUE) |
| 434 | return tp_vfts[proto].get_half_open (handle & 0xFFFFFFFF); |
| 435 | return 0; |
| 436 | } |
| 437 | |
| 438 | always_inline stream_session_t * |
| 439 | stream_session_get_tsi (u64 ti_and_si, u32 thread_index) |
| 440 | { |
| 441 | ASSERT ((u32) (ti_and_si >> 32) == thread_index); |
| 442 | return pool_elt_at_index (session_manager_main.sessions[thread_index], |
| 443 | ti_and_si & 0xFFFFFFFFULL); |
| 444 | } |
| 445 | |
| 446 | transport_connection_t * |
| 447 | stream_session_lookup_transport_wt4 (ip4_address_t * lcl, ip4_address_t * rmt, |
| 448 | u16 lcl_port, u16 rmt_port, u8 proto, |
| 449 | u32 my_thread_index) |
| 450 | { |
| 451 | session_lookup_t *sl = &session_lookup; |
| 452 | session_kv4_t kv4; |
| 453 | stream_session_t *s; |
| 454 | int rv; |
| 455 | |
| 456 | /* Lookup session amongst established ones */ |
| 457 | make_v4_ss_kv (&kv4, lcl, rmt, lcl_port, rmt_port, proto); |
| 458 | rv = clib_bihash_search_inline_16_8 (&sl->v4_session_hash, &kv4); |
| 459 | if (rv == 0) |
| 460 | { |
| 461 | s = stream_session_get_tsi (kv4.value, my_thread_index); |
| 462 | return tp_vfts[s->session_type].get_connection (s->connection_index, |
| 463 | my_thread_index); |
| 464 | } |
| 465 | |
| 466 | /* If nothing is found, check if any listener is available */ |
| 467 | s = stream_session_lookup_listener4 (lcl, lcl_port, proto); |
| 468 | if (s) |
| 469 | return tp_vfts[s->session_type].get_listener (s->connection_index); |
| 470 | |
| 471 | /* Finally, try half-open connections */ |
| 472 | rv = clib_bihash_search_inline_16_8 (&sl->v4_half_open_hash, &kv4); |
| 473 | if (rv == 0) |
| 474 | return tp_vfts[proto].get_half_open (kv4.value & 0xFFFFFFFF); |
| 475 | return 0; |
| 476 | } |
| 477 | |
| 478 | transport_connection_t * |
| 479 | stream_session_lookup_transport4 (ip4_address_t * lcl, ip4_address_t * rmt, |
| 480 | u16 lcl_port, u16 rmt_port, u8 proto) |
| 481 | { |
| 482 | session_lookup_t *sl = &session_lookup; |
| 483 | session_kv4_t kv4; |
| 484 | stream_session_t *s; |
| 485 | int rv; |
| 486 | |
| 487 | /* Lookup session amongst established ones */ |
| 488 | make_v4_ss_kv (&kv4, lcl, rmt, lcl_port, rmt_port, proto); |
| 489 | rv = clib_bihash_search_inline_16_8 (&sl->v4_session_hash, &kv4); |
| 490 | if (rv == 0) |
| 491 | { |
| 492 | s = stream_session_get_from_handle (kv4.value); |
| 493 | return tp_vfts[s->session_type].get_connection (s->connection_index, |
| 494 | s->thread_index); |
| 495 | } |
| 496 | |
| 497 | /* If nothing is found, check if any listener is available */ |
| 498 | s = stream_session_lookup_listener4 (lcl, lcl_port, proto); |
| 499 | if (s) |
| 500 | return tp_vfts[s->session_type].get_listener (s->connection_index); |
| 501 | |
| 502 | /* Finally, try half-open connections */ |
| 503 | rv = clib_bihash_search_inline_16_8 (&sl->v4_half_open_hash, &kv4); |
| 504 | if (rv == 0) |
| 505 | return tp_vfts[proto].get_half_open (kv4.value & 0xFFFFFFFF); |
| 506 | return 0; |
| 507 | } |
| 508 | |
| 509 | transport_connection_t * |
| 510 | stream_session_lookup_transport_wt6 (ip6_address_t * lcl, ip6_address_t * rmt, |
| 511 | u16 lcl_port, u16 rmt_port, u8 proto, |
| 512 | u32 my_thread_index) |
| 513 | { |
| 514 | session_lookup_t *sl = &session_lookup; |
| 515 | stream_session_t *s; |
| 516 | session_kv6_t kv6; |
| 517 | int rv; |
| 518 | |
| 519 | make_v6_ss_kv (&kv6, lcl, rmt, lcl_port, rmt_port, proto); |
| 520 | rv = clib_bihash_search_inline_48_8 (&sl->v6_session_hash, &kv6); |
| 521 | if (rv == 0) |
| 522 | { |
| 523 | s = stream_session_get_tsi (kv6.value, my_thread_index); |
| 524 | return tp_vfts[s->session_type].get_connection (s->connection_index, |
| 525 | my_thread_index); |
| 526 | } |
| 527 | |
| 528 | /* If nothing is found, check if any listener is available */ |
| 529 | s = stream_session_lookup_listener6 (lcl, lcl_port, proto); |
| 530 | if (s) |
| 531 | return tp_vfts[s->session_type].get_listener (s->connection_index); |
| 532 | |
| 533 | /* Finally, try half-open connections */ |
| 534 | rv = clib_bihash_search_inline_48_8 (&sl->v6_half_open_hash, &kv6); |
| 535 | if (rv == 0) |
| 536 | return tp_vfts[proto].get_half_open (kv6.value & 0xFFFFFFFF); |
| 537 | |
| 538 | return 0; |
| 539 | } |
| 540 | |
| 541 | transport_connection_t * |
| 542 | stream_session_lookup_transport6 (ip6_address_t * lcl, ip6_address_t * rmt, |
| 543 | u16 lcl_port, u16 rmt_port, u8 proto) |
| 544 | { |
| 545 | session_lookup_t *sl = &session_lookup; |
| 546 | stream_session_t *s; |
| 547 | session_kv6_t kv6; |
| 548 | int rv; |
| 549 | |
| 550 | make_v6_ss_kv (&kv6, lcl, rmt, lcl_port, rmt_port, proto); |
| 551 | rv = clib_bihash_search_inline_48_8 (&sl->v6_session_hash, &kv6); |
| 552 | if (rv == 0) |
| 553 | { |
| 554 | s = stream_session_get_from_handle (kv6.value); |
| 555 | return tp_vfts[s->session_type].get_connection (s->connection_index, |
| 556 | s->thread_index); |
| 557 | } |
| 558 | |
| 559 | /* If nothing is found, check if any listener is available */ |
| 560 | s = stream_session_lookup_listener6 (lcl, lcl_port, proto); |
| 561 | if (s) |
| 562 | return tp_vfts[s->session_type].get_listener (s->connection_index); |
| 563 | |
| 564 | /* Finally, try half-open connections */ |
| 565 | rv = clib_bihash_search_inline_48_8 (&sl->v6_half_open_hash, &kv6); |
| 566 | if (rv == 0) |
| 567 | return tp_vfts[proto].get_half_open (kv6.value & 0xFFFFFFFF); |
| 568 | |
| 569 | return 0; |
| 570 | } |
| 571 | |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 572 | #define foreach_hash_table_parameter \ |
| 573 | _(v4,session,buckets,20000) \ |
| 574 | _(v4,session,memory,(64<<20)) \ |
| 575 | _(v6,session,buckets,20000) \ |
| 576 | _(v6,session,memory,(64<<20)) \ |
| 577 | _(v4,halfopen,buckets,20000) \ |
| 578 | _(v4,halfopen,memory,(64<<20)) \ |
| 579 | _(v6,halfopen,buckets,20000) \ |
| 580 | _(v6,halfopen,memory,(64<<20)) |
| 581 | |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 582 | void |
| 583 | session_lookup_init (void) |
| 584 | { |
| 585 | session_lookup_t *sl = &session_lookup; |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 586 | |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 587 | #define _(af,table,parm,value) \ |
| 588 | u32 configured_##af##_##table##_table_##parm = value; |
| 589 | foreach_hash_table_parameter; |
| 590 | #undef _ |
| 591 | |
| 592 | #define _(af,table,parm,value) \ |
| 593 | if (session_manager_main.configured_##af##_##table##_table_##parm) \ |
| 594 | configured_##af##_##table##_table_##parm = \ |
| 595 | session_manager_main.configured_##af##_##table##_table_##parm; |
| 596 | foreach_hash_table_parameter; |
| 597 | #undef _ |
| 598 | |
| 599 | clib_bihash_init_16_8 (&sl->v4_session_hash, "v4 session table", |
| 600 | configured_v4_session_table_buckets, |
| 601 | configured_v4_session_table_memory); |
| 602 | clib_bihash_init_48_8 (&sl->v6_session_hash, "v6 session table", |
| 603 | configured_v6_session_table_buckets, |
| 604 | configured_v6_session_table_memory); |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 605 | clib_bihash_init_16_8 (&sl->v4_half_open_hash, "v4 half-open table", |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 606 | configured_v4_halfopen_table_buckets, |
| 607 | configured_v4_halfopen_table_memory); |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 608 | clib_bihash_init_48_8 (&sl->v6_half_open_hash, "v6 half-open table", |
Florin Coras | 66b1131 | 2017-07-31 17:18:03 -0700 | [diff] [blame] | 609 | configured_v6_halfopen_table_buckets, |
| 610 | configured_v6_halfopen_table_memory); |
Florin Coras | 04e5344 | 2017-07-16 17:12:15 -0700 | [diff] [blame] | 611 | } |
| 612 | |
| 613 | /* |
| 614 | * fd.io coding-style-patch-verification: ON |
| 615 | * |
| 616 | * Local Variables: |
| 617 | * eval: (c-set-style "gnu") |
| 618 | * End: |
| 619 | */ |