1// SPDX-License-Identifier: GPL-2.0 2/* 3 * KUnit tests 4 * 5 * Copyright (C) 2020, Intel Corporation 6 * Author: Mika Westerberg <mika.westerberg@linux.intel.com> 7 */ 8 9#include <kunit/test.h> 10#include <linux/idr.h> 11 12#include "tb.h" 13#include "tunnel.h" 14 15static int __ida_init(struct kunit_resource *res, void *context) 16{ 17 struct ida *ida = context; 18 19 ida_init(ida); 20 res->data = ida; 21 return 0; 22} 23 24static void __ida_destroy(struct kunit_resource *res) 25{ 26 struct ida *ida = res->data; 27 28 ida_destroy(ida); 29} 30 31static void kunit_ida_init(struct kunit *test, struct ida *ida) 32{ 33 kunit_alloc_resource(test, __ida_init, __ida_destroy, GFP_KERNEL, ida); 34} 35 36static struct tb_switch *alloc_switch(struct kunit *test, u64 route, 37 u8 upstream_port, u8 max_port_number) 38{ 39 struct tb_switch *sw; 40 size_t size; 41 int i; 42 43 sw = kunit_kzalloc(test, sizeof(*sw), GFP_KERNEL); 44 if (!sw) 45 return NULL; 46 47 sw->config.upstream_port_number = upstream_port; 48 sw->config.depth = tb_route_length(route); 49 sw->config.route_hi = upper_32_bits(route); 50 sw->config.route_lo = lower_32_bits(route); 51 sw->config.enabled = 0; 52 sw->config.max_port_number = max_port_number; 53 54 size = (sw->config.max_port_number + 1) * sizeof(*sw->ports); 55 sw->ports = kunit_kzalloc(test, size, GFP_KERNEL); 56 if (!sw->ports) 57 return NULL; 58 59 for (i = 0; i <= sw->config.max_port_number; i++) { 60 sw->ports[i].sw = sw; 61 sw->ports[i].port = i; 62 sw->ports[i].config.port_number = i; 63 if (i) { 64 kunit_ida_init(test, &sw->ports[i].in_hopids); 65 kunit_ida_init(test, &sw->ports[i].out_hopids); 66 } 67 } 68 69 return sw; 70} 71 72static struct tb_switch *alloc_host(struct kunit *test) 73{ 74 struct tb_switch *sw; 75 76 sw = alloc_switch(test, 0, 7, 13); 77 if (!sw) 78 return NULL; 79 80 sw->config.vendor_id = 0x8086; 81 sw->config.device_id = 0x9a1b; 82 83 sw->ports[0].config.type = TB_TYPE_PORT; 84 sw->ports[0].config.max_in_hop_id = 7; 85 sw->ports[0].config.max_out_hop_id = 7; 86 87 sw->ports[1].config.type = TB_TYPE_PORT; 88 sw->ports[1].config.max_in_hop_id = 19; 89 sw->ports[1].config.max_out_hop_id = 19; 90 sw->ports[1].dual_link_port = &sw->ports[2]; 91 92 sw->ports[2].config.type = TB_TYPE_PORT; 93 sw->ports[2].config.max_in_hop_id = 19; 94 sw->ports[2].config.max_out_hop_id = 19; 95 sw->ports[2].dual_link_port = &sw->ports[1]; 96 sw->ports[2].link_nr = 1; 97 98 sw->ports[3].config.type = TB_TYPE_PORT; 99 sw->ports[3].config.max_in_hop_id = 19; 100 sw->ports[3].config.max_out_hop_id = 19; 101 sw->ports[3].dual_link_port = &sw->ports[4]; 102 103 sw->ports[4].config.type = TB_TYPE_PORT; 104 sw->ports[4].config.max_in_hop_id = 19; 105 sw->ports[4].config.max_out_hop_id = 19; 106 sw->ports[4].dual_link_port = &sw->ports[3]; 107 sw->ports[4].link_nr = 1; 108 109 sw->ports[5].config.type = TB_TYPE_DP_HDMI_IN; 110 sw->ports[5].config.max_in_hop_id = 9; 111 sw->ports[5].config.max_out_hop_id = 9; 112 sw->ports[5].cap_adap = -1; 113 114 sw->ports[6].config.type = TB_TYPE_DP_HDMI_IN; 115 sw->ports[6].config.max_in_hop_id = 9; 116 sw->ports[6].config.max_out_hop_id = 9; 117 sw->ports[6].cap_adap = -1; 118 119 sw->ports[7].config.type = TB_TYPE_NHI; 120 sw->ports[7].config.max_in_hop_id = 11; 121 sw->ports[7].config.max_out_hop_id = 11; 122 123 sw->ports[8].config.type = TB_TYPE_PCIE_DOWN; 124 sw->ports[8].config.max_in_hop_id = 8; 125 sw->ports[8].config.max_out_hop_id = 8; 126 127 sw->ports[9].config.type = TB_TYPE_PCIE_DOWN; 128 sw->ports[9].config.max_in_hop_id = 8; 129 sw->ports[9].config.max_out_hop_id = 8; 130 131 sw->ports[10].disabled = true; 132 sw->ports[11].disabled = true; 133 134 sw->ports[12].config.type = TB_TYPE_USB3_DOWN; 135 sw->ports[12].config.max_in_hop_id = 8; 136 sw->ports[12].config.max_out_hop_id = 8; 137 138 sw->ports[13].config.type = TB_TYPE_USB3_DOWN; 139 sw->ports[13].config.max_in_hop_id = 8; 140 sw->ports[13].config.max_out_hop_id = 8; 141 142 return sw; 143} 144 145static struct tb_switch *alloc_dev_default(struct kunit *test, 146 struct tb_switch *parent, 147 u64 route, bool bonded) 148{ 149 struct tb_port *port, *upstream_port; 150 struct tb_switch *sw; 151 152 sw = alloc_switch(test, route, 1, 19); 153 if (!sw) 154 return NULL; 155 156 sw->config.vendor_id = 0x8086; 157 sw->config.device_id = 0x15ef; 158 159 sw->ports[0].config.type = TB_TYPE_PORT; 160 sw->ports[0].config.max_in_hop_id = 8; 161 sw->ports[0].config.max_out_hop_id = 8; 162 163 sw->ports[1].config.type = TB_TYPE_PORT; 164 sw->ports[1].config.max_in_hop_id = 19; 165 sw->ports[1].config.max_out_hop_id = 19; 166 sw->ports[1].dual_link_port = &sw->ports[2]; 167 168 sw->ports[2].config.type = TB_TYPE_PORT; 169 sw->ports[2].config.max_in_hop_id = 19; 170 sw->ports[2].config.max_out_hop_id = 19; 171 sw->ports[2].dual_link_port = &sw->ports[1]; 172 sw->ports[2].link_nr = 1; 173 174 sw->ports[3].config.type = TB_TYPE_PORT; 175 sw->ports[3].config.max_in_hop_id = 19; 176 sw->ports[3].config.max_out_hop_id = 19; 177 sw->ports[3].dual_link_port = &sw->ports[4]; 178 179 sw->ports[4].config.type = TB_TYPE_PORT; 180 sw->ports[4].config.max_in_hop_id = 19; 181 sw->ports[4].config.max_out_hop_id = 19; 182 sw->ports[4].dual_link_port = &sw->ports[3]; 183 sw->ports[4].link_nr = 1; 184 185 sw->ports[5].config.type = TB_TYPE_PORT; 186 sw->ports[5].config.max_in_hop_id = 19; 187 sw->ports[5].config.max_out_hop_id = 19; 188 sw->ports[5].dual_link_port = &sw->ports[6]; 189 190 sw->ports[6].config.type = TB_TYPE_PORT; 191 sw->ports[6].config.max_in_hop_id = 19; 192 sw->ports[6].config.max_out_hop_id = 19; 193 sw->ports[6].dual_link_port = &sw->ports[5]; 194 sw->ports[6].link_nr = 1; 195 196 sw->ports[7].config.type = TB_TYPE_PORT; 197 sw->ports[7].config.max_in_hop_id = 19; 198 sw->ports[7].config.max_out_hop_id = 19; 199 sw->ports[7].dual_link_port = &sw->ports[8]; 200 201 sw->ports[8].config.type = TB_TYPE_PORT; 202 sw->ports[8].config.max_in_hop_id = 19; 203 sw->ports[8].config.max_out_hop_id = 19; 204 sw->ports[8].dual_link_port = &sw->ports[7]; 205 sw->ports[8].link_nr = 1; 206 207 sw->ports[9].config.type = TB_TYPE_PCIE_UP; 208 sw->ports[9].config.max_in_hop_id = 8; 209 sw->ports[9].config.max_out_hop_id = 8; 210 211 sw->ports[10].config.type = TB_TYPE_PCIE_DOWN; 212 sw->ports[10].config.max_in_hop_id = 8; 213 sw->ports[10].config.max_out_hop_id = 8; 214 215 sw->ports[11].config.type = TB_TYPE_PCIE_DOWN; 216 sw->ports[11].config.max_in_hop_id = 8; 217 sw->ports[11].config.max_out_hop_id = 8; 218 219 sw->ports[12].config.type = TB_TYPE_PCIE_DOWN; 220 sw->ports[12].config.max_in_hop_id = 8; 221 sw->ports[12].config.max_out_hop_id = 8; 222 223 sw->ports[13].config.type = TB_TYPE_DP_HDMI_OUT; 224 sw->ports[13].config.max_in_hop_id = 9; 225 sw->ports[13].config.max_out_hop_id = 9; 226 sw->ports[13].cap_adap = -1; 227 228 sw->ports[14].config.type = TB_TYPE_DP_HDMI_OUT; 229 sw->ports[14].config.max_in_hop_id = 9; 230 sw->ports[14].config.max_out_hop_id = 9; 231 sw->ports[14].cap_adap = -1; 232 233 sw->ports[15].disabled = true; 234 235 sw->ports[16].config.type = TB_TYPE_USB3_UP; 236 sw->ports[16].config.max_in_hop_id = 8; 237 sw->ports[16].config.max_out_hop_id = 8; 238 239 sw->ports[17].config.type = TB_TYPE_USB3_DOWN; 240 sw->ports[17].config.max_in_hop_id = 8; 241 sw->ports[17].config.max_out_hop_id = 8; 242 243 sw->ports[18].config.type = TB_TYPE_USB3_DOWN; 244 sw->ports[18].config.max_in_hop_id = 8; 245 sw->ports[18].config.max_out_hop_id = 8; 246 247 sw->ports[19].config.type = TB_TYPE_USB3_DOWN; 248 sw->ports[19].config.max_in_hop_id = 8; 249 sw->ports[19].config.max_out_hop_id = 8; 250 251 if (!parent) 252 return sw; 253 254 /* Link them */ 255 upstream_port = tb_upstream_port(sw); 256 port = tb_port_at(route, parent); 257 port->remote = upstream_port; 258 upstream_port->remote = port; 259 if (port->dual_link_port && upstream_port->dual_link_port) { 260 port->dual_link_port->remote = upstream_port->dual_link_port; 261 upstream_port->dual_link_port->remote = port->dual_link_port; 262 263 if (bonded) { 264 /* Bonding is used */ 265 port->bonded = true; 266 port->dual_link_port->bonded = true; 267 upstream_port->bonded = true; 268 upstream_port->dual_link_port->bonded = true; 269 } 270 } 271 272 return sw; 273} 274 275static struct tb_switch *alloc_dev_with_dpin(struct kunit *test, 276 struct tb_switch *parent, 277 u64 route, bool bonded) 278{ 279 struct tb_switch *sw; 280 281 sw = alloc_dev_default(test, parent, route, bonded); 282 if (!sw) 283 return NULL; 284 285 sw->ports[13].config.type = TB_TYPE_DP_HDMI_IN; 286 sw->ports[13].config.max_in_hop_id = 9; 287 sw->ports[13].config.max_out_hop_id = 9; 288 289 sw->ports[14].config.type = TB_TYPE_DP_HDMI_IN; 290 sw->ports[14].config.max_in_hop_id = 9; 291 sw->ports[14].config.max_out_hop_id = 9; 292 293 return sw; 294} 295 296static void tb_test_path_basic(struct kunit *test) 297{ 298 struct tb_port *src_port, *dst_port, *p; 299 struct tb_switch *host; 300 301 host = alloc_host(test); 302 303 src_port = &host->ports[5]; 304 dst_port = src_port; 305 306 p = tb_next_port_on_path(src_port, dst_port, NULL); 307 KUNIT_EXPECT_PTR_EQ(test, p, dst_port); 308 309 p = tb_next_port_on_path(src_port, dst_port, p); 310 KUNIT_EXPECT_TRUE(test, !p); 311} 312 313static void tb_test_path_not_connected_walk(struct kunit *test) 314{ 315 struct tb_port *src_port, *dst_port, *p; 316 struct tb_switch *host, *dev; 317 318 host = alloc_host(test); 319 /* No connection between host and dev */ 320 dev = alloc_dev_default(test, NULL, 3, true); 321 322 src_port = &host->ports[12]; 323 dst_port = &dev->ports[16]; 324 325 p = tb_next_port_on_path(src_port, dst_port, NULL); 326 KUNIT_EXPECT_PTR_EQ(test, p, src_port); 327 328 p = tb_next_port_on_path(src_port, dst_port, p); 329 KUNIT_EXPECT_PTR_EQ(test, p, &host->ports[3]); 330 331 p = tb_next_port_on_path(src_port, dst_port, p); 332 KUNIT_EXPECT_TRUE(test, !p); 333 334 /* Other direction */ 335 336 p = tb_next_port_on_path(dst_port, src_port, NULL); 337 KUNIT_EXPECT_PTR_EQ(test, p, dst_port); 338 339 p = tb_next_port_on_path(dst_port, src_port, p); 340 KUNIT_EXPECT_PTR_EQ(test, p, &dev->ports[1]); 341 342 p = tb_next_port_on_path(dst_port, src_port, p); 343 KUNIT_EXPECT_TRUE(test, !p); 344} 345 346struct port_expectation { 347 u64 route; 348 u8 port; 349 enum tb_port_type type; 350}; 351 352static void tb_test_path_single_hop_walk(struct kunit *test) 353{ 354 /* 355 * Walks from Host PCIe downstream port to Device #1 PCIe 356 * upstream port. 357 * 358 * [Host] 359 * 1 | 360 * 1 | 361 * [Device] 362 */ 363 static const struct port_expectation test_data[] = { 364 { .route = 0x0, .port = 8, .type = TB_TYPE_PCIE_DOWN }, 365 { .route = 0x0, .port = 1, .type = TB_TYPE_PORT }, 366 { .route = 0x1, .port = 1, .type = TB_TYPE_PORT }, 367 { .route = 0x1, .port = 9, .type = TB_TYPE_PCIE_UP }, 368 }; 369 struct tb_port *src_port, *dst_port, *p; 370 struct tb_switch *host, *dev; 371 int i; 372 373 host = alloc_host(test); 374 dev = alloc_dev_default(test, host, 1, true); 375 376 src_port = &host->ports[8]; 377 dst_port = &dev->ports[9]; 378 379 /* Walk both directions */ 380 381 i = 0; 382 tb_for_each_port_on_path(src_port, dst_port, p) { 383 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 384 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 385 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 386 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 387 test_data[i].type); 388 i++; 389 } 390 391 KUNIT_EXPECT_EQ(test, i, (int)ARRAY_SIZE(test_data)); 392 393 i = ARRAY_SIZE(test_data) - 1; 394 tb_for_each_port_on_path(dst_port, src_port, p) { 395 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 396 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 397 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 398 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 399 test_data[i].type); 400 i--; 401 } 402 403 KUNIT_EXPECT_EQ(test, i, -1); 404} 405 406static void tb_test_path_daisy_chain_walk(struct kunit *test) 407{ 408 /* 409 * Walks from Host DP IN to Device #2 DP OUT. 410 * 411 * [Host] 412 * 1 | 413 * 1 | 414 * [Device #1] 415 * 3 / 416 * 1 / 417 * [Device #2] 418 */ 419 static const struct port_expectation test_data[] = { 420 { .route = 0x0, .port = 5, .type = TB_TYPE_DP_HDMI_IN }, 421 { .route = 0x0, .port = 1, .type = TB_TYPE_PORT }, 422 { .route = 0x1, .port = 1, .type = TB_TYPE_PORT }, 423 { .route = 0x1, .port = 3, .type = TB_TYPE_PORT }, 424 { .route = 0x301, .port = 1, .type = TB_TYPE_PORT }, 425 { .route = 0x301, .port = 13, .type = TB_TYPE_DP_HDMI_OUT }, 426 }; 427 struct tb_port *src_port, *dst_port, *p; 428 struct tb_switch *host, *dev1, *dev2; 429 int i; 430 431 host = alloc_host(test); 432 dev1 = alloc_dev_default(test, host, 0x1, true); 433 dev2 = alloc_dev_default(test, dev1, 0x301, true); 434 435 src_port = &host->ports[5]; 436 dst_port = &dev2->ports[13]; 437 438 /* Walk both directions */ 439 440 i = 0; 441 tb_for_each_port_on_path(src_port, dst_port, p) { 442 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 443 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 444 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 445 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 446 test_data[i].type); 447 i++; 448 } 449 450 KUNIT_EXPECT_EQ(test, i, (int)ARRAY_SIZE(test_data)); 451 452 i = ARRAY_SIZE(test_data) - 1; 453 tb_for_each_port_on_path(dst_port, src_port, p) { 454 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 455 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 456 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 457 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 458 test_data[i].type); 459 i--; 460 } 461 462 KUNIT_EXPECT_EQ(test, i, -1); 463} 464 465static void tb_test_path_simple_tree_walk(struct kunit *test) 466{ 467 /* 468 * Walks from Host DP IN to Device #3 DP OUT. 469 * 470 * [Host] 471 * 1 | 472 * 1 | 473 * [Device #1] 474 * 3 / | 5 \ 7 475 * 1 / | \ 1 476 * [Device #2] | [Device #4] 477 * | 1 478 * [Device #3] 479 */ 480 static const struct port_expectation test_data[] = { 481 { .route = 0x0, .port = 5, .type = TB_TYPE_DP_HDMI_IN }, 482 { .route = 0x0, .port = 1, .type = TB_TYPE_PORT }, 483 { .route = 0x1, .port = 1, .type = TB_TYPE_PORT }, 484 { .route = 0x1, .port = 5, .type = TB_TYPE_PORT }, 485 { .route = 0x501, .port = 1, .type = TB_TYPE_PORT }, 486 { .route = 0x501, .port = 13, .type = TB_TYPE_DP_HDMI_OUT }, 487 }; 488 struct tb_port *src_port, *dst_port, *p; 489 struct tb_switch *host, *dev1, *dev3; 490 int i; 491 492 host = alloc_host(test); 493 dev1 = alloc_dev_default(test, host, 0x1, true); 494 alloc_dev_default(test, dev1, 0x301, true); 495 dev3 = alloc_dev_default(test, dev1, 0x501, true); 496 alloc_dev_default(test, dev1, 0x701, true); 497 498 src_port = &host->ports[5]; 499 dst_port = &dev3->ports[13]; 500 501 /* Walk both directions */ 502 503 i = 0; 504 tb_for_each_port_on_path(src_port, dst_port, p) { 505 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 506 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 507 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 508 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 509 test_data[i].type); 510 i++; 511 } 512 513 KUNIT_EXPECT_EQ(test, i, (int)ARRAY_SIZE(test_data)); 514 515 i = ARRAY_SIZE(test_data) - 1; 516 tb_for_each_port_on_path(dst_port, src_port, p) { 517 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 518 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 519 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 520 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 521 test_data[i].type); 522 i--; 523 } 524 525 KUNIT_EXPECT_EQ(test, i, -1); 526} 527 528static void tb_test_path_complex_tree_walk(struct kunit *test) 529{ 530 /* 531 * Walks from Device #3 DP IN to Device #9 DP OUT. 532 * 533 * [Host] 534 * 1 | 535 * 1 | 536 * [Device #1] 537 * 3 / | 5 \ 7 538 * 1 / | \ 1 539 * [Device #2] | [Device #5] 540 * 5 | | 1 \ 7 541 * 1 | [Device #4] \ 1 542 * [Device #3] [Device #6] 543 * 3 / 544 * 1 / 545 * [Device #7] 546 * 3 / | 5 547 * 1 / | 548 * [Device #8] | 1 549 * [Device #9] 550 */ 551 static const struct port_expectation test_data[] = { 552 { .route = 0x50301, .port = 13, .type = TB_TYPE_DP_HDMI_IN }, 553 { .route = 0x50301, .port = 1, .type = TB_TYPE_PORT }, 554 { .route = 0x301, .port = 5, .type = TB_TYPE_PORT }, 555 { .route = 0x301, .port = 1, .type = TB_TYPE_PORT }, 556 { .route = 0x1, .port = 3, .type = TB_TYPE_PORT }, 557 { .route = 0x1, .port = 7, .type = TB_TYPE_PORT }, 558 { .route = 0x701, .port = 1, .type = TB_TYPE_PORT }, 559 { .route = 0x701, .port = 7, .type = TB_TYPE_PORT }, 560 { .route = 0x70701, .port = 1, .type = TB_TYPE_PORT }, 561 { .route = 0x70701, .port = 3, .type = TB_TYPE_PORT }, 562 { .route = 0x3070701, .port = 1, .type = TB_TYPE_PORT }, 563 { .route = 0x3070701, .port = 5, .type = TB_TYPE_PORT }, 564 { .route = 0x503070701, .port = 1, .type = TB_TYPE_PORT }, 565 { .route = 0x503070701, .port = 14, .type = TB_TYPE_DP_HDMI_OUT }, 566 }; 567 struct tb_switch *host, *dev1, *dev2, *dev3, *dev5, *dev6, *dev7, *dev9; 568 struct tb_port *src_port, *dst_port, *p; 569 int i; 570 571 host = alloc_host(test); 572 dev1 = alloc_dev_default(test, host, 0x1, true); 573 dev2 = alloc_dev_default(test, dev1, 0x301, true); 574 dev3 = alloc_dev_with_dpin(test, dev2, 0x50301, true); 575 alloc_dev_default(test, dev1, 0x501, true); 576 dev5 = alloc_dev_default(test, dev1, 0x701, true); 577 dev6 = alloc_dev_default(test, dev5, 0x70701, true); 578 dev7 = alloc_dev_default(test, dev6, 0x3070701, true); 579 alloc_dev_default(test, dev7, 0x303070701, true); 580 dev9 = alloc_dev_default(test, dev7, 0x503070701, true); 581 582 src_port = &dev3->ports[13]; 583 dst_port = &dev9->ports[14]; 584 585 /* Walk both directions */ 586 587 i = 0; 588 tb_for_each_port_on_path(src_port, dst_port, p) { 589 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 590 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 591 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 592 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 593 test_data[i].type); 594 i++; 595 } 596 597 KUNIT_EXPECT_EQ(test, i, (int)ARRAY_SIZE(test_data)); 598 599 i = ARRAY_SIZE(test_data) - 1; 600 tb_for_each_port_on_path(dst_port, src_port, p) { 601 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 602 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 603 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 604 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 605 test_data[i].type); 606 i--; 607 } 608 609 KUNIT_EXPECT_EQ(test, i, -1); 610} 611 612static void tb_test_path_max_length_walk(struct kunit *test) 613{ 614 struct tb_switch *host, *dev1, *dev2, *dev3, *dev4, *dev5, *dev6; 615 struct tb_switch *dev7, *dev8, *dev9, *dev10, *dev11, *dev12; 616 struct tb_port *src_port, *dst_port, *p; 617 int i; 618 619 /* 620 * Walks from Device #6 DP IN to Device #12 DP OUT. 621 * 622 * [Host] 623 * 1 / \ 3 624 * 1 / \ 1 625 * [Device #1] [Device #7] 626 * 3 | | 3 627 * 1 | | 1 628 * [Device #2] [Device #8] 629 * 3 | | 3 630 * 1 | | 1 631 * [Device #3] [Device #9] 632 * 3 | | 3 633 * 1 | | 1 634 * [Device #4] [Device #10] 635 * 3 | | 3 636 * 1 | | 1 637 * [Device #5] [Device #11] 638 * 3 | | 3 639 * 1 | | 1 640 * [Device #6] [Device #12] 641 */ 642 static const struct port_expectation test_data[] = { 643 { .route = 0x30303030301, .port = 13, .type = TB_TYPE_DP_HDMI_IN }, 644 { .route = 0x30303030301, .port = 1, .type = TB_TYPE_PORT }, 645 { .route = 0x303030301, .port = 3, .type = TB_TYPE_PORT }, 646 { .route = 0x303030301, .port = 1, .type = TB_TYPE_PORT }, 647 { .route = 0x3030301, .port = 3, .type = TB_TYPE_PORT }, 648 { .route = 0x3030301, .port = 1, .type = TB_TYPE_PORT }, 649 { .route = 0x30301, .port = 3, .type = TB_TYPE_PORT }, 650 { .route = 0x30301, .port = 1, .type = TB_TYPE_PORT }, 651 { .route = 0x301, .port = 3, .type = TB_TYPE_PORT }, 652 { .route = 0x301, .port = 1, .type = TB_TYPE_PORT }, 653 { .route = 0x1, .port = 3, .type = TB_TYPE_PORT }, 654 { .route = 0x1, .port = 1, .type = TB_TYPE_PORT }, 655 { .route = 0x0, .port = 1, .type = TB_TYPE_PORT }, 656 { .route = 0x0, .port = 3, .type = TB_TYPE_PORT }, 657 { .route = 0x3, .port = 1, .type = TB_TYPE_PORT }, 658 { .route = 0x3, .port = 3, .type = TB_TYPE_PORT }, 659 { .route = 0x303, .port = 1, .type = TB_TYPE_PORT }, 660 { .route = 0x303, .port = 3, .type = TB_TYPE_PORT }, 661 { .route = 0x30303, .port = 1, .type = TB_TYPE_PORT }, 662 { .route = 0x30303, .port = 3, .type = TB_TYPE_PORT }, 663 { .route = 0x3030303, .port = 1, .type = TB_TYPE_PORT }, 664 { .route = 0x3030303, .port = 3, .type = TB_TYPE_PORT }, 665 { .route = 0x303030303, .port = 1, .type = TB_TYPE_PORT }, 666 { .route = 0x303030303, .port = 3, .type = TB_TYPE_PORT }, 667 { .route = 0x30303030303, .port = 1, .type = TB_TYPE_PORT }, 668 { .route = 0x30303030303, .port = 13, .type = TB_TYPE_DP_HDMI_OUT }, 669 }; 670 671 host = alloc_host(test); 672 dev1 = alloc_dev_default(test, host, 0x1, true); 673 dev2 = alloc_dev_default(test, dev1, 0x301, true); 674 dev3 = alloc_dev_default(test, dev2, 0x30301, true); 675 dev4 = alloc_dev_default(test, dev3, 0x3030301, true); 676 dev5 = alloc_dev_default(test, dev4, 0x303030301, true); 677 dev6 = alloc_dev_with_dpin(test, dev5, 0x30303030301, true); 678 dev7 = alloc_dev_default(test, host, 0x3, true); 679 dev8 = alloc_dev_default(test, dev7, 0x303, true); 680 dev9 = alloc_dev_default(test, dev8, 0x30303, true); 681 dev10 = alloc_dev_default(test, dev9, 0x3030303, true); 682 dev11 = alloc_dev_default(test, dev10, 0x303030303, true); 683 dev12 = alloc_dev_default(test, dev11, 0x30303030303, true); 684 685 src_port = &dev6->ports[13]; 686 dst_port = &dev12->ports[13]; 687 688 /* Walk both directions */ 689 690 i = 0; 691 tb_for_each_port_on_path(src_port, dst_port, p) { 692 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 693 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 694 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 695 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 696 test_data[i].type); 697 i++; 698 } 699 700 KUNIT_EXPECT_EQ(test, i, (int)ARRAY_SIZE(test_data)); 701 702 i = ARRAY_SIZE(test_data) - 1; 703 tb_for_each_port_on_path(dst_port, src_port, p) { 704 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 705 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 706 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 707 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 708 test_data[i].type); 709 i--; 710 } 711 712 KUNIT_EXPECT_EQ(test, i, -1); 713} 714 715static void tb_test_path_not_connected(struct kunit *test) 716{ 717 struct tb_switch *host, *dev1, *dev2; 718 struct tb_port *down, *up; 719 struct tb_path *path; 720 721 host = alloc_host(test); 722 dev1 = alloc_dev_default(test, host, 0x3, false); 723 /* Not connected to anything */ 724 dev2 = alloc_dev_default(test, NULL, 0x303, false); 725 726 down = &dev1->ports[10]; 727 up = &dev2->ports[9]; 728 729 path = tb_path_alloc(NULL, down, 8, up, 8, 0, "PCIe Down"); 730 KUNIT_ASSERT_TRUE(test, path == NULL); 731 path = tb_path_alloc(NULL, down, 8, up, 8, 1, "PCIe Down"); 732 KUNIT_ASSERT_TRUE(test, path == NULL); 733} 734 735struct hop_expectation { 736 u64 route; 737 u8 in_port; 738 enum tb_port_type in_type; 739 u8 out_port; 740 enum tb_port_type out_type; 741}; 742 743static void tb_test_path_not_bonded_lane0(struct kunit *test) 744{ 745 /* 746 * PCIe path from host to device using lane 0. 747 * 748 * [Host] 749 * 3 |: 4 750 * 1 |: 2 751 * [Device] 752 */ 753 static const struct hop_expectation test_data[] = { 754 { 755 .route = 0x0, 756 .in_port = 9, 757 .in_type = TB_TYPE_PCIE_DOWN, 758 .out_port = 3, 759 .out_type = TB_TYPE_PORT, 760 }, 761 { 762 .route = 0x3, 763 .in_port = 1, 764 .in_type = TB_TYPE_PORT, 765 .out_port = 9, 766 .out_type = TB_TYPE_PCIE_UP, 767 }, 768 }; 769 struct tb_switch *host, *dev; 770 struct tb_port *down, *up; 771 struct tb_path *path; 772 int i; 773 774 host = alloc_host(test); 775 dev = alloc_dev_default(test, host, 0x3, false); 776 777 down = &host->ports[9]; 778 up = &dev->ports[9]; 779 780 path = tb_path_alloc(NULL, down, 8, up, 8, 0, "PCIe Down"); 781 KUNIT_ASSERT_TRUE(test, path != NULL); 782 KUNIT_ASSERT_EQ(test, path->path_length, (int)ARRAY_SIZE(test_data)); 783 for (i = 0; i < ARRAY_SIZE(test_data); i++) { 784 const struct tb_port *in_port, *out_port; 785 786 in_port = path->hops[i].in_port; 787 out_port = path->hops[i].out_port; 788 789 KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route); 790 KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port); 791 KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type, 792 test_data[i].in_type); 793 KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route); 794 KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port); 795 KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type, 796 test_data[i].out_type); 797 } 798 tb_path_free(path); 799} 800 801static void tb_test_path_not_bonded_lane1(struct kunit *test) 802{ 803 /* 804 * DP Video path from host to device using lane 1. Paths like 805 * these are only used with Thunderbolt 1 devices where lane 806 * bonding is not possible. USB4 specifically does not allow 807 * paths like this (you either use lane 0 where lane 1 is 808 * disabled or both lanes are bonded). 809 * 810 * [Host] 811 * 1 :| 2 812 * 1 :| 2 813 * [Device] 814 */ 815 static const struct hop_expectation test_data[] = { 816 { 817 .route = 0x0, 818 .in_port = 5, 819 .in_type = TB_TYPE_DP_HDMI_IN, 820 .out_port = 2, 821 .out_type = TB_TYPE_PORT, 822 }, 823 { 824 .route = 0x1, 825 .in_port = 2, 826 .in_type = TB_TYPE_PORT, 827 .out_port = 13, 828 .out_type = TB_TYPE_DP_HDMI_OUT, 829 }, 830 }; 831 struct tb_switch *host, *dev; 832 struct tb_port *in, *out; 833 struct tb_path *path; 834 int i; 835 836 host = alloc_host(test); 837 dev = alloc_dev_default(test, host, 0x1, false); 838 839 in = &host->ports[5]; 840 out = &dev->ports[13]; 841 842 path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video"); 843 KUNIT_ASSERT_TRUE(test, path != NULL); 844 KUNIT_ASSERT_EQ(test, path->path_length, (int)ARRAY_SIZE(test_data)); 845 for (i = 0; i < ARRAY_SIZE(test_data); i++) { 846 const struct tb_port *in_port, *out_port; 847 848 in_port = path->hops[i].in_port; 849 out_port = path->hops[i].out_port; 850 851 KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route); 852 KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port); 853 KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type, 854 test_data[i].in_type); 855 KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route); 856 KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port); 857 KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type, 858 test_data[i].out_type); 859 } 860 tb_path_free(path); 861} 862 863static void tb_test_path_not_bonded_lane1_chain(struct kunit *test) 864{ 865 /* 866 * DP Video path from host to device 3 using lane 1. 867 * 868 * [Host] 869 * 1 :| 2 870 * 1 :| 2 871 * [Device #1] 872 * 7 :| 8 873 * 1 :| 2 874 * [Device #2] 875 * 5 :| 6 876 * 1 :| 2 877 * [Device #3] 878 */ 879 static const struct hop_expectation test_data[] = { 880 { 881 .route = 0x0, 882 .in_port = 5, 883 .in_type = TB_TYPE_DP_HDMI_IN, 884 .out_port = 2, 885 .out_type = TB_TYPE_PORT, 886 }, 887 { 888 .route = 0x1, 889 .in_port = 2, 890 .in_type = TB_TYPE_PORT, 891 .out_port = 8, 892 .out_type = TB_TYPE_PORT, 893 }, 894 { 895 .route = 0x701, 896 .in_port = 2, 897 .in_type = TB_TYPE_PORT, 898 .out_port = 6, 899 .out_type = TB_TYPE_PORT, 900 }, 901 { 902 .route = 0x50701, 903 .in_port = 2, 904 .in_type = TB_TYPE_PORT, 905 .out_port = 13, 906 .out_type = TB_TYPE_DP_HDMI_OUT, 907 }, 908 }; 909 struct tb_switch *host, *dev1, *dev2, *dev3; 910 struct tb_port *in, *out; 911 struct tb_path *path; 912 int i; 913 914 host = alloc_host(test); 915 dev1 = alloc_dev_default(test, host, 0x1, false); 916 dev2 = alloc_dev_default(test, dev1, 0x701, false); 917 dev3 = alloc_dev_default(test, dev2, 0x50701, false); 918 919 in = &host->ports[5]; 920 out = &dev3->ports[13]; 921 922 path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video"); 923 KUNIT_ASSERT_TRUE(test, path != NULL); 924 KUNIT_ASSERT_EQ(test, path->path_length, (int)ARRAY_SIZE(test_data)); 925 for (i = 0; i < ARRAY_SIZE(test_data); i++) { 926 const struct tb_port *in_port, *out_port; 927 928 in_port = path->hops[i].in_port; 929 out_port = path->hops[i].out_port; 930 931 KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route); 932 KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port); 933 KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type, 934 test_data[i].in_type); 935 KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route); 936 KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port); 937 KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type, 938 test_data[i].out_type); 939 } 940 tb_path_free(path); 941} 942 943static void tb_test_path_not_bonded_lane1_chain_reverse(struct kunit *test) 944{ 945 /* 946 * DP Video path from device 3 to host using lane 1. 947 * 948 * [Host] 949 * 1 :| 2 950 * 1 :| 2 951 * [Device #1] 952 * 7 :| 8 953 * 1 :| 2 954 * [Device #2] 955 * 5 :| 6 956 * 1 :| 2 957 * [Device #3] 958 */ 959 static const struct hop_expectation test_data[] = { 960 { 961 .route = 0x50701, 962 .in_port = 13, 963 .in_type = TB_TYPE_DP_HDMI_IN, 964 .out_port = 2, 965 .out_type = TB_TYPE_PORT, 966 }, 967 { 968 .route = 0x701, 969 .in_port = 6, 970 .in_type = TB_TYPE_PORT, 971 .out_port = 2, 972 .out_type = TB_TYPE_PORT, 973 }, 974 { 975 .route = 0x1, 976 .in_port = 8, 977 .in_type = TB_TYPE_PORT, 978 .out_port = 2, 979 .out_type = TB_TYPE_PORT, 980 }, 981 { 982 .route = 0x0, 983 .in_port = 2, 984 .in_type = TB_TYPE_PORT, 985 .out_port = 5, 986 .out_type = TB_TYPE_DP_HDMI_IN, 987 }, 988 }; 989 struct tb_switch *host, *dev1, *dev2, *dev3; 990 struct tb_port *in, *out; 991 struct tb_path *path; 992 int i; 993 994 host = alloc_host(test); 995 dev1 = alloc_dev_default(test, host, 0x1, false); 996 dev2 = alloc_dev_default(test, dev1, 0x701, false); 997 dev3 = alloc_dev_with_dpin(test, dev2, 0x50701, false); 998 999 in = &dev3->ports[13]; 1000 out = &host->ports[5]; 1001 1002 path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video"); 1003 KUNIT_ASSERT_TRUE(test, path != NULL); 1004 KUNIT_ASSERT_EQ(test, path->path_length, (int)ARRAY_SIZE(test_data)); 1005 for (i = 0; i < ARRAY_SIZE(test_data); i++) { 1006 const struct tb_port *in_port, *out_port; 1007 1008 in_port = path->hops[i].in_port; 1009 out_port = path->hops[i].out_port; 1010 1011 KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route); 1012 KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port); 1013 KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type, 1014 test_data[i].in_type); 1015 KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route); 1016 KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port); 1017 KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type, 1018 test_data[i].out_type); 1019 } 1020 tb_path_free(path); 1021} 1022 1023static void tb_test_path_mixed_chain(struct kunit *test) 1024{ 1025 /* 1026 * DP Video path from host to device 4 where first and last link 1027 * is bonded. 1028 * 1029 * [Host] 1030 * 1 | 1031 * 1 | 1032 * [Device #1] 1033 * 7 :| 8 1034 * 1 :| 2 1035 * [Device #2] 1036 * 5 :| 6 1037 * 1 :| 2 1038 * [Device #3] 1039 * 3 | 1040 * 1 | 1041 * [Device #4] 1042 */ 1043 static const struct hop_expectation test_data[] = { 1044 { 1045 .route = 0x0, 1046 .in_port = 5, 1047 .in_type = TB_TYPE_DP_HDMI_IN, 1048 .out_port = 1, 1049 .out_type = TB_TYPE_PORT, 1050 }, 1051 { 1052 .route = 0x1, 1053 .in_port = 1, 1054 .in_type = TB_TYPE_PORT, 1055 .out_port = 8, 1056 .out_type = TB_TYPE_PORT, 1057 }, 1058 { 1059 .route = 0x701, 1060 .in_port = 2, 1061 .in_type = TB_TYPE_PORT, 1062 .out_port = 6, 1063 .out_type = TB_TYPE_PORT, 1064 }, 1065 { 1066 .route = 0x50701, 1067 .in_port = 2, 1068 .in_type = TB_TYPE_PORT, 1069 .out_port = 3, 1070 .out_type = TB_TYPE_PORT, 1071 }, 1072 { 1073 .route = 0x3050701, 1074 .in_port = 1, 1075 .in_type = TB_TYPE_PORT, 1076 .out_port = 13, 1077 .out_type = TB_TYPE_DP_HDMI_OUT, 1078 }, 1079 }; 1080 struct tb_switch *host, *dev1, *dev2, *dev3, *dev4; 1081 struct tb_port *in, *out; 1082 struct tb_path *path; 1083 int i; 1084 1085 host = alloc_host(test); 1086 dev1 = alloc_dev_default(test, host, 0x1, true); 1087 dev2 = alloc_dev_default(test, dev1, 0x701, false); 1088 dev3 = alloc_dev_default(test, dev2, 0x50701, false); 1089 dev4 = alloc_dev_default(test, dev3, 0x3050701, true); 1090 1091 in = &host->ports[5]; 1092 out = &dev4->ports[13]; 1093 1094 path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video"); 1095 KUNIT_ASSERT_TRUE(test, path != NULL); 1096 KUNIT_ASSERT_EQ(test, path->path_length, (int)ARRAY_SIZE(test_data)); 1097 for (i = 0; i < ARRAY_SIZE(test_data); i++) { 1098 const struct tb_port *in_port, *out_port; 1099 1100 in_port = path->hops[i].in_port; 1101 out_port = path->hops[i].out_port; 1102 1103 KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route); 1104 KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port); 1105 KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type, 1106 test_data[i].in_type); 1107 KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route); 1108 KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port); 1109 KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type, 1110 test_data[i].out_type); 1111 } 1112 tb_path_free(path); 1113} 1114 1115static void tb_test_path_mixed_chain_reverse(struct kunit *test) 1116{ 1117 /* 1118 * DP Video path from device 4 to host where first and last link 1119 * is bonded. 1120 * 1121 * [Host] 1122 * 1 | 1123 * 1 | 1124 * [Device #1] 1125 * 7 :| 8 1126 * 1 :| 2 1127 * [Device #2] 1128 * 5 :| 6 1129 * 1 :| 2 1130 * [Device #3] 1131 * 3 | 1132 * 1 | 1133 * [Device #4] 1134 */ 1135 static const struct hop_expectation test_data[] = { 1136 { 1137 .route = 0x3050701, 1138 .in_port = 13, 1139 .in_type = TB_TYPE_DP_HDMI_OUT, 1140 .out_port = 1, 1141 .out_type = TB_TYPE_PORT, 1142 }, 1143 { 1144 .route = 0x50701, 1145 .in_port = 3, 1146 .in_type = TB_TYPE_PORT, 1147 .out_port = 2, 1148 .out_type = TB_TYPE_PORT, 1149 }, 1150 { 1151 .route = 0x701, 1152 .in_port = 6, 1153 .in_type = TB_TYPE_PORT, 1154 .out_port = 2, 1155 .out_type = TB_TYPE_PORT, 1156 }, 1157 { 1158 .route = 0x1, 1159 .in_port = 8, 1160 .in_type = TB_TYPE_PORT, 1161 .out_port = 1, 1162 .out_type = TB_TYPE_PORT, 1163 }, 1164 { 1165 .route = 0x0, 1166 .in_port = 1, 1167 .in_type = TB_TYPE_PORT, 1168 .out_port = 5, 1169 .out_type = TB_TYPE_DP_HDMI_IN, 1170 }, 1171 }; 1172 struct tb_switch *host, *dev1, *dev2, *dev3, *dev4; 1173 struct tb_port *in, *out; 1174 struct tb_path *path; 1175 int i; 1176 1177 host = alloc_host(test); 1178 dev1 = alloc_dev_default(test, host, 0x1, true); 1179 dev2 = alloc_dev_default(test, dev1, 0x701, false); 1180 dev3 = alloc_dev_default(test, dev2, 0x50701, false); 1181 dev4 = alloc_dev_default(test, dev3, 0x3050701, true); 1182 1183 in = &dev4->ports[13]; 1184 out = &host->ports[5]; 1185 1186 path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video"); 1187 KUNIT_ASSERT_TRUE(test, path != NULL); 1188 KUNIT_ASSERT_EQ(test, path->path_length, (int)ARRAY_SIZE(test_data)); 1189 for (i = 0; i < ARRAY_SIZE(test_data); i++) { 1190 const struct tb_port *in_port, *out_port; 1191 1192 in_port = path->hops[i].in_port; 1193 out_port = path->hops[i].out_port; 1194 1195 KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route); 1196 KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port); 1197 KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type, 1198 test_data[i].in_type); 1199 KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route); 1200 KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port); 1201 KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type, 1202 test_data[i].out_type); 1203 } 1204 tb_path_free(path); 1205} 1206 1207static void tb_test_tunnel_pcie(struct kunit *test) 1208{ 1209 struct tb_switch *host, *dev1, *dev2; 1210 struct tb_tunnel *tunnel1, *tunnel2; 1211 struct tb_port *down, *up; 1212 1213 /* 1214 * Create PCIe tunnel between host and two devices. 1215 * 1216 * [Host] 1217 * 1 | 1218 * 1 | 1219 * [Device #1] 1220 * 5 | 1221 * 1 | 1222 * [Device #2] 1223 */ 1224 host = alloc_host(test); 1225 dev1 = alloc_dev_default(test, host, 0x1, true); 1226 dev2 = alloc_dev_default(test, dev1, 0x501, true); 1227 1228 down = &host->ports[8]; 1229 up = &dev1->ports[9]; 1230 tunnel1 = tb_tunnel_alloc_pci(NULL, up, down); 1231 KUNIT_ASSERT_TRUE(test, tunnel1 != NULL); 1232 KUNIT_EXPECT_EQ(test, tunnel1->type, (enum tb_tunnel_type)TB_TUNNEL_PCI); 1233 KUNIT_EXPECT_PTR_EQ(test, tunnel1->src_port, down); 1234 KUNIT_EXPECT_PTR_EQ(test, tunnel1->dst_port, up); 1235 KUNIT_ASSERT_EQ(test, tunnel1->npaths, (size_t)2); 1236 KUNIT_ASSERT_EQ(test, tunnel1->paths[0]->path_length, 2); 1237 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[0]->hops[0].in_port, down); 1238 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[0]->hops[1].out_port, up); 1239 KUNIT_ASSERT_EQ(test, tunnel1->paths[1]->path_length, 2); 1240 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[1]->hops[0].in_port, up); 1241 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[1]->hops[1].out_port, down); 1242 1243 down = &dev1->ports[10]; 1244 up = &dev2->ports[9]; 1245 tunnel2 = tb_tunnel_alloc_pci(NULL, up, down); 1246 KUNIT_ASSERT_TRUE(test, tunnel2 != NULL); 1247 KUNIT_EXPECT_EQ(test, tunnel2->type, (enum tb_tunnel_type)TB_TUNNEL_PCI); 1248 KUNIT_EXPECT_PTR_EQ(test, tunnel2->src_port, down); 1249 KUNIT_EXPECT_PTR_EQ(test, tunnel2->dst_port, up); 1250 KUNIT_ASSERT_EQ(test, tunnel2->npaths, (size_t)2); 1251 KUNIT_ASSERT_EQ(test, tunnel2->paths[0]->path_length, 2); 1252 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[0]->hops[0].in_port, down); 1253 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[0]->hops[1].out_port, up); 1254 KUNIT_ASSERT_EQ(test, tunnel2->paths[1]->path_length, 2); 1255 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[1]->hops[0].in_port, up); 1256 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[1]->hops[1].out_port, down); 1257 1258 tb_tunnel_free(tunnel2); 1259 tb_tunnel_free(tunnel1); 1260} 1261 1262static void tb_test_tunnel_dp(struct kunit *test) 1263{ 1264 struct tb_switch *host, *dev; 1265 struct tb_port *in, *out; 1266 struct tb_tunnel *tunnel; 1267 1268 /* 1269 * Create DP tunnel between Host and Device 1270 * 1271 * [Host] 1272 * 1 | 1273 * 1 | 1274 * [Device] 1275 */ 1276 host = alloc_host(test); 1277 dev = alloc_dev_default(test, host, 0x3, true); 1278 1279 in = &host->ports[5]; 1280 out = &dev->ports[13]; 1281 1282 tunnel = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 1283 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1284 KUNIT_EXPECT_EQ(test, tunnel->type, (enum tb_tunnel_type)TB_TUNNEL_DP); 1285 KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, in); 1286 KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, out); 1287 KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)3); 1288 KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 2); 1289 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, in); 1290 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[1].out_port, out); 1291 KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 2); 1292 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, in); 1293 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[1].out_port, out); 1294 KUNIT_ASSERT_EQ(test, tunnel->paths[2]->path_length, 2); 1295 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[0].in_port, out); 1296 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[1].out_port, in); 1297 tb_tunnel_free(tunnel); 1298} 1299 1300static void tb_test_tunnel_dp_chain(struct kunit *test) 1301{ 1302 struct tb_switch *host, *dev1, *dev4; 1303 struct tb_port *in, *out; 1304 struct tb_tunnel *tunnel; 1305 1306 /* 1307 * Create DP tunnel from Host DP IN to Device #4 DP OUT. 1308 * 1309 * [Host] 1310 * 1 | 1311 * 1 | 1312 * [Device #1] 1313 * 3 / | 5 \ 7 1314 * 1 / | \ 1 1315 * [Device #2] | [Device #4] 1316 * | 1 1317 * [Device #3] 1318 */ 1319 host = alloc_host(test); 1320 dev1 = alloc_dev_default(test, host, 0x1, true); 1321 alloc_dev_default(test, dev1, 0x301, true); 1322 alloc_dev_default(test, dev1, 0x501, true); 1323 dev4 = alloc_dev_default(test, dev1, 0x701, true); 1324 1325 in = &host->ports[5]; 1326 out = &dev4->ports[14]; 1327 1328 tunnel = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 1329 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1330 KUNIT_EXPECT_EQ(test, tunnel->type, (enum tb_tunnel_type)TB_TUNNEL_DP); 1331 KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, in); 1332 KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, out); 1333 KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)3); 1334 KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 3); 1335 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, in); 1336 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[2].out_port, out); 1337 KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 3); 1338 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, in); 1339 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[2].out_port, out); 1340 KUNIT_ASSERT_EQ(test, tunnel->paths[2]->path_length, 3); 1341 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[0].in_port, out); 1342 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[2].out_port, in); 1343 tb_tunnel_free(tunnel); 1344} 1345 1346static void tb_test_tunnel_dp_tree(struct kunit *test) 1347{ 1348 struct tb_switch *host, *dev1, *dev2, *dev3, *dev5; 1349 struct tb_port *in, *out; 1350 struct tb_tunnel *tunnel; 1351 1352 /* 1353 * Create DP tunnel from Device #2 DP IN to Device #5 DP OUT. 1354 * 1355 * [Host] 1356 * 3 | 1357 * 1 | 1358 * [Device #1] 1359 * 3 / | 5 \ 7 1360 * 1 / | \ 1 1361 * [Device #2] | [Device #4] 1362 * | 1 1363 * [Device #3] 1364 * | 5 1365 * | 1 1366 * [Device #5] 1367 */ 1368 host = alloc_host(test); 1369 dev1 = alloc_dev_default(test, host, 0x3, true); 1370 dev2 = alloc_dev_with_dpin(test, dev1, 0x303, true); 1371 dev3 = alloc_dev_default(test, dev1, 0x503, true); 1372 alloc_dev_default(test, dev1, 0x703, true); 1373 dev5 = alloc_dev_default(test, dev3, 0x50503, true); 1374 1375 in = &dev2->ports[13]; 1376 out = &dev5->ports[13]; 1377 1378 tunnel = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 1379 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1380 KUNIT_EXPECT_EQ(test, tunnel->type, (enum tb_tunnel_type)TB_TUNNEL_DP); 1381 KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, in); 1382 KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, out); 1383 KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)3); 1384 KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 4); 1385 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, in); 1386 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[3].out_port, out); 1387 KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 4); 1388 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, in); 1389 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[3].out_port, out); 1390 KUNIT_ASSERT_EQ(test, tunnel->paths[2]->path_length, 4); 1391 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[0].in_port, out); 1392 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[3].out_port, in); 1393 tb_tunnel_free(tunnel); 1394} 1395 1396static void tb_test_tunnel_dp_max_length(struct kunit *test) 1397{ 1398 struct tb_switch *host, *dev1, *dev2, *dev3, *dev4, *dev5, *dev6; 1399 struct tb_switch *dev7, *dev8, *dev9, *dev10, *dev11, *dev12; 1400 struct tb_port *in, *out; 1401 struct tb_tunnel *tunnel; 1402 1403 /* 1404 * Creates DP tunnel from Device #6 to Device #12. 1405 * 1406 * [Host] 1407 * 1 / \ 3 1408 * 1 / \ 1 1409 * [Device #1] [Device #7] 1410 * 3 | | 3 1411 * 1 | | 1 1412 * [Device #2] [Device #8] 1413 * 3 | | 3 1414 * 1 | | 1 1415 * [Device #3] [Device #9] 1416 * 3 | | 3 1417 * 1 | | 1 1418 * [Device #4] [Device #10] 1419 * 3 | | 3 1420 * 1 | | 1 1421 * [Device #5] [Device #11] 1422 * 3 | | 3 1423 * 1 | | 1 1424 * [Device #6] [Device #12] 1425 */ 1426 host = alloc_host(test); 1427 dev1 = alloc_dev_default(test, host, 0x1, true); 1428 dev2 = alloc_dev_default(test, dev1, 0x301, true); 1429 dev3 = alloc_dev_default(test, dev2, 0x30301, true); 1430 dev4 = alloc_dev_default(test, dev3, 0x3030301, true); 1431 dev5 = alloc_dev_default(test, dev4, 0x303030301, true); 1432 dev6 = alloc_dev_with_dpin(test, dev5, 0x30303030301, true); 1433 dev7 = alloc_dev_default(test, host, 0x3, true); 1434 dev8 = alloc_dev_default(test, dev7, 0x303, true); 1435 dev9 = alloc_dev_default(test, dev8, 0x30303, true); 1436 dev10 = alloc_dev_default(test, dev9, 0x3030303, true); 1437 dev11 = alloc_dev_default(test, dev10, 0x303030303, true); 1438 dev12 = alloc_dev_default(test, dev11, 0x30303030303, true); 1439 1440 in = &dev6->ports[13]; 1441 out = &dev12->ports[13]; 1442 1443 tunnel = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 1444 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1445 KUNIT_EXPECT_EQ(test, tunnel->type, (enum tb_tunnel_type)TB_TUNNEL_DP); 1446 KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, in); 1447 KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, out); 1448 KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)3); 1449 KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 13); 1450 /* First hop */ 1451 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, in); 1452 /* Middle */ 1453 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[6].in_port, 1454 &host->ports[1]); 1455 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[6].out_port, 1456 &host->ports[3]); 1457 /* Last */ 1458 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[12].out_port, out); 1459 KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 13); 1460 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, in); 1461 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[6].in_port, 1462 &host->ports[1]); 1463 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[6].out_port, 1464 &host->ports[3]); 1465 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[12].out_port, out); 1466 KUNIT_ASSERT_EQ(test, tunnel->paths[2]->path_length, 13); 1467 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[0].in_port, out); 1468 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[6].in_port, 1469 &host->ports[3]); 1470 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[6].out_port, 1471 &host->ports[1]); 1472 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[12].out_port, in); 1473 tb_tunnel_free(tunnel); 1474} 1475 1476static void tb_test_tunnel_usb3(struct kunit *test) 1477{ 1478 struct tb_switch *host, *dev1, *dev2; 1479 struct tb_tunnel *tunnel1, *tunnel2; 1480 struct tb_port *down, *up; 1481 1482 /* 1483 * Create USB3 tunnel between host and two devices. 1484 * 1485 * [Host] 1486 * 1 | 1487 * 1 | 1488 * [Device #1] 1489 * \ 7 1490 * \ 1 1491 * [Device #2] 1492 */ 1493 host = alloc_host(test); 1494 dev1 = alloc_dev_default(test, host, 0x1, true); 1495 dev2 = alloc_dev_default(test, dev1, 0x701, true); 1496 1497 down = &host->ports[12]; 1498 up = &dev1->ports[16]; 1499 tunnel1 = tb_tunnel_alloc_usb3(NULL, up, down, 0, 0); 1500 KUNIT_ASSERT_TRUE(test, tunnel1 != NULL); 1501 KUNIT_EXPECT_EQ(test, tunnel1->type, (enum tb_tunnel_type)TB_TUNNEL_USB3); 1502 KUNIT_EXPECT_PTR_EQ(test, tunnel1->src_port, down); 1503 KUNIT_EXPECT_PTR_EQ(test, tunnel1->dst_port, up); 1504 KUNIT_ASSERT_EQ(test, tunnel1->npaths, (size_t)2); 1505 KUNIT_ASSERT_EQ(test, tunnel1->paths[0]->path_length, 2); 1506 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[0]->hops[0].in_port, down); 1507 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[0]->hops[1].out_port, up); 1508 KUNIT_ASSERT_EQ(test, tunnel1->paths[1]->path_length, 2); 1509 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[1]->hops[0].in_port, up); 1510 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[1]->hops[1].out_port, down); 1511 1512 down = &dev1->ports[17]; 1513 up = &dev2->ports[16]; 1514 tunnel2 = tb_tunnel_alloc_usb3(NULL, up, down, 0, 0); 1515 KUNIT_ASSERT_TRUE(test, tunnel2 != NULL); 1516 KUNIT_EXPECT_EQ(test, tunnel2->type, (enum tb_tunnel_type)TB_TUNNEL_USB3); 1517 KUNIT_EXPECT_PTR_EQ(test, tunnel2->src_port, down); 1518 KUNIT_EXPECT_PTR_EQ(test, tunnel2->dst_port, up); 1519 KUNIT_ASSERT_EQ(test, tunnel2->npaths, (size_t)2); 1520 KUNIT_ASSERT_EQ(test, tunnel2->paths[0]->path_length, 2); 1521 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[0]->hops[0].in_port, down); 1522 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[0]->hops[1].out_port, up); 1523 KUNIT_ASSERT_EQ(test, tunnel2->paths[1]->path_length, 2); 1524 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[1]->hops[0].in_port, up); 1525 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[1]->hops[1].out_port, down); 1526 1527 tb_tunnel_free(tunnel2); 1528 tb_tunnel_free(tunnel1); 1529} 1530 1531static void tb_test_tunnel_port_on_path(struct kunit *test) 1532{ 1533 struct tb_switch *host, *dev1, *dev2, *dev3, *dev4, *dev5; 1534 struct tb_port *in, *out, *port; 1535 struct tb_tunnel *dp_tunnel; 1536 1537 /* 1538 * [Host] 1539 * 3 | 1540 * 1 | 1541 * [Device #1] 1542 * 3 / | 5 \ 7 1543 * 1 / | \ 1 1544 * [Device #2] | [Device #4] 1545 * | 1 1546 * [Device #3] 1547 * | 5 1548 * | 1 1549 * [Device #5] 1550 */ 1551 host = alloc_host(test); 1552 dev1 = alloc_dev_default(test, host, 0x3, true); 1553 dev2 = alloc_dev_with_dpin(test, dev1, 0x303, true); 1554 dev3 = alloc_dev_default(test, dev1, 0x503, true); 1555 dev4 = alloc_dev_default(test, dev1, 0x703, true); 1556 dev5 = alloc_dev_default(test, dev3, 0x50503, true); 1557 1558 in = &dev2->ports[13]; 1559 out = &dev5->ports[13]; 1560 1561 dp_tunnel = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 1562 KUNIT_ASSERT_TRUE(test, dp_tunnel != NULL); 1563 1564 KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, in)); 1565 KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, out)); 1566 1567 port = &host->ports[8]; 1568 KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1569 1570 port = &host->ports[3]; 1571 KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1572 1573 port = &dev1->ports[1]; 1574 KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1575 1576 port = &dev1->ports[3]; 1577 KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1578 1579 port = &dev1->ports[5]; 1580 KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1581 1582 port = &dev1->ports[7]; 1583 KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1584 1585 port = &dev3->ports[1]; 1586 KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1587 1588 port = &dev5->ports[1]; 1589 KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1590 1591 port = &dev4->ports[1]; 1592 KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1593 1594 tb_tunnel_free(dp_tunnel); 1595} 1596 1597static struct kunit_case tb_test_cases[] = { 1598 KUNIT_CASE(tb_test_path_basic), 1599 KUNIT_CASE(tb_test_path_not_connected_walk), 1600 KUNIT_CASE(tb_test_path_single_hop_walk), 1601 KUNIT_CASE(tb_test_path_daisy_chain_walk), 1602 KUNIT_CASE(tb_test_path_simple_tree_walk), 1603 KUNIT_CASE(tb_test_path_complex_tree_walk), 1604 KUNIT_CASE(tb_test_path_max_length_walk), 1605 KUNIT_CASE(tb_test_path_not_connected), 1606 KUNIT_CASE(tb_test_path_not_bonded_lane0), 1607 KUNIT_CASE(tb_test_path_not_bonded_lane1), 1608 KUNIT_CASE(tb_test_path_not_bonded_lane1_chain), 1609 KUNIT_CASE(tb_test_path_not_bonded_lane1_chain_reverse), 1610 KUNIT_CASE(tb_test_path_mixed_chain), 1611 KUNIT_CASE(tb_test_path_mixed_chain_reverse), 1612 KUNIT_CASE(tb_test_tunnel_pcie), 1613 KUNIT_CASE(tb_test_tunnel_dp), 1614 KUNIT_CASE(tb_test_tunnel_dp_chain), 1615 KUNIT_CASE(tb_test_tunnel_dp_tree), 1616 KUNIT_CASE(tb_test_tunnel_dp_max_length), 1617 KUNIT_CASE(tb_test_tunnel_port_on_path), 1618 KUNIT_CASE(tb_test_tunnel_usb3), 1619 { } 1620}; 1621 1622static struct kunit_suite tb_test_suite = { 1623 .name = "thunderbolt", 1624 .test_cases = tb_test_cases, 1625}; 1626 1627static struct kunit_suite *tb_test_suites[] = { &tb_test_suite, NULL }; 1628 1629int tb_test_init(void) 1630{ 1631 return __kunit_test_suites_init(tb_test_suites); 1632} 1633 1634void tb_test_exit(void) 1635{ 1636 return __kunit_test_suites_exit(tb_test_suites); 1637} 1638