Damjan Marion | 38c6191 | 2023-10-17 16:06:26 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: Apache-2.0 |
| 2 | * Copyright (c) 2023 Cisco Systems, Inc. |
| 3 | */ |
| 4 | |
| 5 | #include "vppinfra/pool.h" |
| 6 | #include <vnet/vnet.h> |
| 7 | #include <vnet/ethernet/ethernet.h> |
| 8 | #include <vnet/dev/dev.h> |
| 9 | #include <vnet/dev/log.h> |
| 10 | #include <vnet/dev/counters.h> |
| 11 | |
| 12 | VLIB_REGISTER_LOG_CLASS (dev_log, static) = { |
| 13 | .class_name = "dev", |
| 14 | }; |
| 15 | |
| 16 | vnet_dev_main_t vnet_dev_main = { .next_rx_queue_thread = 1 }; |
| 17 | |
| 18 | vnet_dev_bus_t * |
| 19 | vnet_dev_find_device_bus (vlib_main_t *vm, vnet_dev_device_id_t id) |
| 20 | { |
| 21 | vnet_dev_main_t *dm = &vnet_dev_main; |
| 22 | vnet_dev_bus_t *bus; |
| 23 | |
| 24 | pool_foreach (bus, dm->buses) |
| 25 | { |
| 26 | int n = strlen (bus->registration->name); |
| 27 | int l = strlen (id); |
| 28 | int dl = strlen (VNET_DEV_DEVICE_ID_PREFIX_DELIMITER); |
| 29 | |
| 30 | if (l <= n + dl) |
| 31 | continue; |
| 32 | |
| 33 | if (strncmp (bus->registration->name, id, n)) |
| 34 | continue; |
| 35 | |
| 36 | if (strncmp (VNET_DEV_DEVICE_ID_PREFIX_DELIMITER, id + n, dl)) |
| 37 | continue; |
| 38 | |
| 39 | return bus; |
| 40 | } |
| 41 | |
| 42 | return 0; |
| 43 | } |
| 44 | |
| 45 | void * |
| 46 | vnet_dev_get_device_info (vlib_main_t *vm, vnet_dev_device_id_t id) |
| 47 | { |
| 48 | vnet_dev_bus_t *bus; |
| 49 | |
| 50 | bus = vnet_dev_find_device_bus (vm, id); |
| 51 | if (bus == 0) |
| 52 | return 0; |
| 53 | |
| 54 | return bus->ops.get_device_info (vm, id); |
| 55 | } |
| 56 | |
| 57 | vnet_dev_t * |
| 58 | vnet_dev_alloc (vlib_main_t *vm, vnet_dev_device_id_t id, |
| 59 | vnet_dev_driver_t *driver) |
| 60 | { |
| 61 | vnet_dev_main_t *dm = &vnet_dev_main; |
| 62 | vnet_dev_t *dev = 0, **devp = 0; |
| 63 | |
| 64 | dev = vnet_dev_alloc_with_data (sizeof (vnet_dev_t), |
| 65 | driver->registration->device_data_sz); |
| 66 | |
| 67 | pool_get (dm->devices, devp); |
| 68 | devp[0] = dev; |
| 69 | dev->index = devp - dm->devices; |
| 70 | dev->driver_index = driver->index; |
| 71 | dev->ops = driver->registration->ops; |
| 72 | dev->bus_index = driver->bus_index; |
| 73 | clib_memcpy (dev->device_id, id, sizeof (dev->device_id)); |
| 74 | hash_set (dm->device_index_by_id, dev->device_id, dev->index); |
| 75 | |
| 76 | if ((vnet_dev_process_create (vm, dev)) == VNET_DEV_OK) |
| 77 | return dev; |
| 78 | |
| 79 | vnet_dev_free (vm, dev); |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | vnet_dev_rv_t |
| 84 | vnet_dev_init (vlib_main_t *vm, vnet_dev_t *dev) |
| 85 | { |
| 86 | vnet_dev_main_t *dm = &vnet_dev_main; |
| 87 | vnet_dev_bus_t *bus = pool_elt_at_index (dm->buses, dev->bus_index); |
| 88 | vnet_dev_rv_t rv; |
| 89 | |
| 90 | vnet_dev_validate (vm, dev); |
| 91 | |
| 92 | if ((rv = bus->ops.device_open (vm, dev)) != VNET_DEV_OK) |
| 93 | return rv; |
| 94 | |
| 95 | if ((rv = dev->ops.alloc (vm, dev)) != VNET_DEV_OK) |
| 96 | { |
| 97 | log_err (dev, "device init failed [rv %d]", rv); |
| 98 | if (dev->ops.deinit) |
| 99 | dev->ops.deinit (vm, dev); |
| 100 | if (dev->ops.free) |
| 101 | dev->ops.free (vm, dev); |
| 102 | return rv; |
| 103 | } |
| 104 | |
| 105 | if ((rv = dev->ops.init (vm, dev)) != VNET_DEV_OK) |
| 106 | { |
| 107 | log_err (dev, "device init failed [rv %d]", rv); |
| 108 | if (dev->ops.deinit) |
| 109 | dev->ops.deinit (vm, dev); |
| 110 | if (dev->ops.free) |
| 111 | dev->ops.free (vm, dev); |
| 112 | return rv; |
| 113 | } |
| 114 | |
| 115 | dev->initialized = 1; |
| 116 | dev->not_first_init = 1; |
| 117 | return VNET_DEV_OK; |
| 118 | } |
| 119 | |
| 120 | void |
| 121 | vnet_dev_deinit (vlib_main_t *vm, vnet_dev_t *dev) |
| 122 | { |
| 123 | ASSERT (dev->initialized == 1); |
| 124 | vnet_dev_bus_t *bus; |
| 125 | |
| 126 | vnet_dev_validate (vm, dev); |
| 127 | |
| 128 | foreach_vnet_dev_port (p, dev) |
| 129 | ASSERT (p->interface_created == 0); |
| 130 | |
| 131 | if (dev->ops.deinit) |
| 132 | dev->ops.deinit (vm, dev); |
| 133 | |
| 134 | bus = vnet_dev_get_bus (dev); |
| 135 | if (bus->ops.device_close) |
| 136 | bus->ops.device_close (vm, dev); |
| 137 | |
| 138 | vnet_dev_process_quit (vm, dev); |
| 139 | |
| 140 | dev->initialized = 0; |
| 141 | } |
| 142 | |
| 143 | void |
| 144 | vnet_dev_free (vlib_main_t *vm, vnet_dev_t *dev) |
| 145 | { |
| 146 | vnet_dev_main_t *dm = &vnet_dev_main; |
| 147 | |
| 148 | vnet_dev_validate (vm, dev); |
| 149 | |
| 150 | ASSERT (dev->initialized == 0); |
| 151 | |
| 152 | foreach_vnet_dev_port (p, dev) |
| 153 | vnet_dev_port_free (vm, p); |
| 154 | |
| 155 | vec_free (dev->description); |
| 156 | pool_free (dev->ports); |
| 157 | pool_free (dev->periodic_ops); |
| 158 | hash_unset (dm->device_index_by_id, dev->device_id); |
| 159 | pool_put_index (dm->devices, dev->index); |
| 160 | } |
| 161 | |
| 162 | vnet_dev_rv_t |
| 163 | vnet_dev_reset (vlib_main_t *vm, vnet_dev_t *dev) |
| 164 | { |
| 165 | vnet_dev_rv_t rv; |
| 166 | |
| 167 | ASSERT (dev->initialized == 1); |
| 168 | vnet_dev_validate (vm, dev); |
| 169 | |
| 170 | if (dev->ops.reset == 0) |
| 171 | return VNET_DEV_ERR_NOT_SUPPORTED; |
| 172 | |
| 173 | if ((rv = dev->ops.reset (vm, dev)) != VNET_DEV_OK) |
| 174 | { |
| 175 | log_err (dev, "device reset failed [rv %d]", rv); |
| 176 | return rv; |
| 177 | } |
| 178 | |
| 179 | return VNET_DEV_OK; |
| 180 | } |
| 181 | |
| 182 | void |
| 183 | vnet_dev_detach (vlib_main_t *vm, vnet_dev_t *dev) |
| 184 | { |
| 185 | foreach_vnet_dev_port (p, dev) |
| 186 | if (p->interface_created) |
| 187 | vnet_dev_port_if_remove (vm, p); |
| 188 | vnet_dev_deinit (vm, dev); |
| 189 | vnet_dev_free (vm, dev); |
| 190 | } |
| 191 | |
| 192 | vnet_dev_rv_t |
| 193 | vnet_dev_dma_mem_alloc (vlib_main_t *vm, vnet_dev_t *dev, u32 size, u32 align, |
| 194 | void **pp) |
| 195 | { |
| 196 | vnet_dev_main_t *dm = &vnet_dev_main; |
| 197 | vnet_dev_bus_t *bus = pool_elt_at_index (dm->buses, dev->bus_index); |
| 198 | vnet_dev_rv_t rv; |
| 199 | |
| 200 | vnet_dev_validate (vm, dev); |
| 201 | |
| 202 | if (!bus->ops.dma_mem_alloc_fn) |
| 203 | return VNET_DEV_ERR_NOT_SUPPORTED; |
| 204 | |
| 205 | rv = bus->ops.dma_mem_alloc_fn (vm, dev, size, align, pp); |
| 206 | if (rv == VNET_DEV_OK) |
| 207 | log_debug (dev, "%u bytes va %p dma-addr 0x%lx numa %u align %u", size, |
| 208 | *pp, vnet_dev_get_dma_addr (vm, dev, *pp), dev->numa_node, |
| 209 | align); |
| 210 | return rv; |
| 211 | } |
| 212 | |
| 213 | void |
| 214 | vnet_dev_dma_mem_free (vlib_main_t *vm, vnet_dev_t *dev, void *p) |
| 215 | { |
| 216 | vnet_dev_main_t *dm = &vnet_dev_main; |
| 217 | vnet_dev_bus_t *bus = pool_elt_at_index (dm->buses, dev->bus_index); |
| 218 | |
| 219 | vnet_dev_validate (vm, dev); |
| 220 | |
| 221 | if (p == 0 || !bus->ops.dma_mem_free_fn) |
| 222 | return; |
| 223 | |
| 224 | return bus->ops.dma_mem_free_fn (vm, dev, p); |
| 225 | } |
| 226 | |
| 227 | clib_error_t * |
| 228 | vnet_dev_admin_up_down_fn (vnet_main_t *vnm, u32 hw_if_index, u32 flags) |
| 229 | { |
| 230 | vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index); |
| 231 | vlib_main_t *vm = vlib_get_main (); |
| 232 | vnet_dev_port_t *p = vnet_dev_get_port_from_dev_instance (hi->dev_instance); |
| 233 | vnet_dev_rv_t rv = VNET_DEV_OK; |
| 234 | u32 is_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0; |
| 235 | |
| 236 | if (is_up && p->started == 0) |
| 237 | rv = vnet_dev_process_call_port_op (vm, p, vnet_dev_port_start); |
| 238 | else if (!is_up && p->started) |
| 239 | rv = vnet_dev_process_call_port_op_no_rv (vm, p, vnet_dev_port_stop); |
| 240 | |
| 241 | if (rv != VNET_DEV_OK) |
| 242 | return clib_error_return (0, "failed to change port admin state: %U", |
| 243 | format_vnet_dev_rv, rv); |
| 244 | |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | static void |
| 249 | vnet_dev_feature_update_cb (u32 sw_if_index, u8 arc_index, u8 is_enable, |
| 250 | void *cb) |
| 251 | { |
| 252 | vlib_main_t *vm = vlib_get_main (); |
| 253 | vnet_main_t *vnm = vnet_get_main (); |
| 254 | vnet_feature_main_t *fm = &feature_main; |
| 255 | vnet_feature_config_main_t *cm; |
| 256 | vnet_dev_main_t *vdm = &vnet_dev_main; |
| 257 | vnet_dev_port_t *port; |
| 258 | vnet_hw_interface_t *hw; |
| 259 | u32 current_config_index = ~0; |
| 260 | u32 next_index = ~0; |
| 261 | int update_runtime = 0; |
| 262 | |
| 263 | if (arc_index != vdm->eth_port_rx_feature_arc_index) |
| 264 | return; |
| 265 | |
| 266 | hw = vnet_get_sup_hw_interface (vnm, sw_if_index); |
| 267 | port = vnet_dev_get_port_from_dev_instance (hw->dev_instance); |
| 268 | |
| 269 | if (port == 0 || port->intf.sw_if_index != sw_if_index) |
| 270 | return; |
| 271 | |
| 272 | if (vnet_have_features (arc_index, sw_if_index)) |
| 273 | { |
| 274 | cm = &fm->feature_config_mains[arc_index]; |
| 275 | current_config_index = |
| 276 | vec_elt (cm->config_index_by_sw_if_index, sw_if_index); |
| 277 | vnet_get_config_data (&cm->config_main, ¤t_config_index, |
| 278 | &next_index, 0); |
| 279 | if (port->intf.feature_arc == 0 || |
| 280 | port->intf.rx_next_index != next_index || |
| 281 | port->intf.current_config_index != current_config_index) |
| 282 | { |
| 283 | port->intf.current_config_index = current_config_index; |
| 284 | port->intf.rx_next_index = next_index; |
| 285 | port->intf.feature_arc_index = arc_index; |
| 286 | port->intf.feature_arc = 1; |
| 287 | update_runtime = 1; |
| 288 | } |
| 289 | } |
| 290 | else |
| 291 | { |
| 292 | if (port->intf.feature_arc) |
| 293 | { |
| 294 | port->intf.current_config_index = 0; |
| 295 | port->intf.rx_next_index = |
| 296 | port->intf.redirect_to_node ? |
| 297 | port->intf.redirect_to_node_next_index : |
| 298 | vnet_dev_default_next_index_by_port_type[port->attr.type]; |
| 299 | port->intf.feature_arc_index = 0; |
| 300 | port->intf.feature_arc = 0; |
| 301 | update_runtime = 1; |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | if (update_runtime) |
| 306 | { |
| 307 | foreach_vnet_dev_port_rx_queue (rxq, port) |
| 308 | vnet_dev_rx_queue_rt_request ( |
| 309 | vm, rxq, |
| 310 | (vnet_dev_rx_queue_rt_req_t){ .update_next_index = 1, |
| 311 | .update_feature_arc = 1 }); |
| 312 | log_debug (port->dev, "runtime update requested due to chgange in " |
| 313 | "feature arc configuration"); |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | static int |
| 318 | sort_driver_registrations (void *a0, void *a1) |
| 319 | { |
| 320 | vnet_dev_driver_registration_t **r0 = a0; |
| 321 | vnet_dev_driver_registration_t **r1 = a1; |
| 322 | |
| 323 | if (r0[0]->priority > r1[0]->priority) |
| 324 | return -1; |
| 325 | else if (r0[0]->priority < r1[0]->priority) |
| 326 | return 1; |
| 327 | |
| 328 | return 0; |
| 329 | } |
| 330 | |
| 331 | static clib_error_t * |
| 332 | vnet_dev_main_init (vlib_main_t *vm) |
| 333 | { |
| 334 | vnet_dev_main_t *dm = &vnet_dev_main; |
| 335 | vnet_dev_driver_registration_t **drv = 0; |
| 336 | u32 temp_space_sz = 0; |
| 337 | |
| 338 | dm->device_index_by_id = hash_create_string (0, sizeof (uword)); |
| 339 | |
| 340 | for (vnet_dev_bus_registration_t *r = dm->bus_registrations; r; |
| 341 | r = r->next_registration) |
| 342 | { |
| 343 | vnet_dev_bus_t *bus; |
| 344 | pool_get_zero (dm->buses, bus); |
| 345 | bus->registration = r; |
| 346 | bus->index = bus - dm->buses; |
| 347 | bus->ops = r->ops; |
| 348 | if (!r->device_data_size || |
| 349 | r->device_data_size > STRUCT_SIZE_OF (vnet_dev_t, bus_data)) |
| 350 | return clib_error_return ( |
| 351 | 0, "bus device data for bus '%s' is too big not specified", r->name); |
| 352 | |
| 353 | log_debug (0, "bus '%s' registered", r->name); |
| 354 | } |
| 355 | |
| 356 | for (vnet_dev_driver_registration_t *r = dm->driver_registrations; r; |
| 357 | r = r->next_registration) |
| 358 | vec_add1 (drv, r); |
| 359 | |
| 360 | vec_sort_with_function (drv, sort_driver_registrations); |
| 361 | |
| 362 | vec_foreach_pointer (r, drv) |
| 363 | { |
| 364 | vnet_dev_driver_t *driver; |
| 365 | vnet_dev_bus_t *bus; |
| 366 | vnet_device_class_t *dev_class; |
| 367 | int bus_index = -1; |
| 368 | |
| 369 | pool_foreach (bus, dm->buses) |
| 370 | { |
| 371 | if (strcmp (bus->registration->name, r->bus) == 0) |
| 372 | { |
| 373 | bus_index = bus->index; |
| 374 | break; |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | if (bus_index < 0) |
| 379 | return clib_error_return (0, "unknown bus '%s'", r->bus); |
| 380 | |
| 381 | pool_get_zero (dm->drivers, driver); |
| 382 | driver->registration = r; |
| 383 | driver->index = driver - dm->drivers; |
| 384 | driver->bus_index = bus_index; |
| 385 | driver->ops = r->ops; |
| 386 | dev_class = clib_mem_alloc (sizeof (vnet_device_class_t)); |
| 387 | *dev_class = (vnet_device_class_t){ |
| 388 | .name = r->name, |
| 389 | .format_device_name = format_vnet_dev_interface_name, |
| 390 | .format_device = format_vnet_dev_interface_info, |
| 391 | .admin_up_down_function = vnet_dev_admin_up_down_fn, |
| 392 | .rx_redirect_to_node = vnet_dev_set_interface_next_node, |
| 393 | .clear_counters = vnet_dev_clear_hw_interface_counters, |
| 394 | .rx_mode_change_function = vnet_dev_rx_mode_change_fn, |
| 395 | .mac_addr_change_function = vnet_dev_port_mac_change, |
| 396 | .mac_addr_add_del_function = vnet_dev_add_del_mac_address, |
| 397 | .flow_ops_function = vnet_dev_flow_ops_fn, |
| 398 | .set_rss_queues_function = vnet_dev_interface_set_rss_queues, |
| 399 | }; |
| 400 | driver->dev_class_index = vnet_register_device_class (vm, dev_class); |
| 401 | log_debug (0, "driver '%s' registered on bus '%s'", r->name, |
| 402 | bus->registration->name); |
| 403 | |
| 404 | if (temp_space_sz < r->runtime_temp_space_sz) |
| 405 | temp_space_sz = r->runtime_temp_space_sz; |
| 406 | } |
| 407 | |
| 408 | if (dm->startup_config) |
| 409 | log_debug (0, "startup config: %v", dm->startup_config); |
| 410 | |
| 411 | vec_free (drv); |
| 412 | |
| 413 | if (temp_space_sz > 0) |
| 414 | { |
| 415 | const u32 align = CLIB_CACHE_LINE_BYTES; |
| 416 | u32 sz = round_pow2 (temp_space_sz, align); |
| 417 | dm->log2_runtime_temp_space_sz = |
| 418 | get_lowest_set_bit_index (max_pow2 (sz)); |
| 419 | sz = 1 << dm->log2_runtime_temp_space_sz; |
| 420 | sz *= vlib_get_n_threads (); |
| 421 | dm->runtime_temp_spaces = clib_mem_alloc_aligned (sz, align); |
| 422 | clib_memset (dm->runtime_temp_spaces, 0, sz); |
| 423 | log_debug (0, |
| 424 | "requested %u bytes for runtime temp storage, allocated %u " |
| 425 | "per thread (total %u)", |
| 426 | temp_space_sz, 1 << dm->log2_runtime_temp_space_sz, sz); |
| 427 | } |
| 428 | |
| 429 | vnet_feature_register (vnet_dev_feature_update_cb, 0); |
| 430 | |
| 431 | return 0; |
| 432 | } |
| 433 | |
| 434 | VLIB_INIT_FUNCTION (vnet_dev_main_init); |
| 435 | |
| 436 | clib_error_t * |
| 437 | vnet_dev_num_workers_change (vlib_main_t *vm) |
| 438 | { |
| 439 | vnet_dev_main_t *dm = &vnet_dev_main; |
| 440 | |
| 441 | if (dm->log2_runtime_temp_space_sz > 0) |
| 442 | { |
| 443 | const u32 align = CLIB_CACHE_LINE_BYTES; |
| 444 | uword sz = |
| 445 | (1ULL << dm->log2_runtime_temp_space_sz) * vlib_get_n_threads (); |
| 446 | if (dm->runtime_temp_spaces) |
| 447 | clib_mem_free (dm->runtime_temp_spaces); |
| 448 | dm->runtime_temp_spaces = clib_mem_alloc_aligned (sz, align); |
| 449 | clib_memset (dm->runtime_temp_spaces, 0, sz); |
| 450 | log_debug (0, "runtime temp storage resized to %u", sz); |
| 451 | } |
| 452 | |
| 453 | return 0; |
| 454 | } |
| 455 | |
| 456 | VLIB_NUM_WORKERS_CHANGE_FN (vnet_dev_num_workers_change); |