1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (C) 2022, Intel Corporation. */ 3 4 #include "ice_vf_lib_private.h" 5 #include "ice.h" 6 #include "ice_lib.h" 7 #include "ice_fltr.h" 8 #include "ice_virtchnl_allowlist.h" 9 10 /* Public functions which may be accessed by all driver files */ 11 12 /** 13 * ice_get_vf_by_id - Get pointer to VF by ID 14 * @pf: the PF private structure 15 * @vf_id: the VF ID to locate 16 * 17 * Locate and return a pointer to the VF structure associated with a given ID. 18 * Returns NULL if the ID does not have a valid VF structure associated with 19 * it. 20 * 21 * This function takes a reference to the VF, which must be released by 22 * calling ice_put_vf() once the caller is finished accessing the VF structure 23 * returned. 24 */ 25 struct ice_vf *ice_get_vf_by_id(struct ice_pf *pf, u16 vf_id) 26 { 27 struct ice_vf *vf; 28 29 rcu_read_lock(); 30 hash_for_each_possible_rcu(pf->vfs.table, vf, entry, vf_id) { 31 if (vf->vf_id == vf_id) { 32 struct ice_vf *found; 33 34 if (kref_get_unless_zero(&vf->refcnt)) 35 found = vf; 36 else 37 found = NULL; 38 39 rcu_read_unlock(); 40 return found; 41 } 42 } 43 rcu_read_unlock(); 44 45 return NULL; 46 } 47 48 /** 49 * ice_release_vf - Release VF associated with a refcount 50 * @ref: the kref decremented to zero 51 * 52 * Callback function for kref_put to release a VF once its reference count has 53 * hit zero. 54 */ 55 static void ice_release_vf(struct kref *ref) 56 { 57 struct ice_vf *vf = container_of(ref, struct ice_vf, refcnt); 58 59 vf->vf_ops->free(vf); 60 } 61 62 /** 63 * ice_put_vf - Release a reference to a VF 64 * @vf: the VF structure to decrease reference count on 65 * 66 * Decrease the reference count for a VF, and free the entry if it is no 67 * longer in use. 68 * 69 * This must be called after ice_get_vf_by_id() once the reference to the VF 70 * structure is no longer used. Otherwise, the VF structure will never be 71 * freed. 72 */ 73 void ice_put_vf(struct ice_vf *vf) 74 { 75 kref_put(&vf->refcnt, ice_release_vf); 76 } 77 78 /** 79 * ice_has_vfs - Return true if the PF has any associated VFs 80 * @pf: the PF private structure 81 * 82 * Return whether or not the PF has any allocated VFs. 83 * 84 * Note that this function only guarantees that there are no VFs at the point 85 * of calling it. It does not guarantee that no more VFs will be added. 86 */ 87 bool ice_has_vfs(struct ice_pf *pf) 88 { 89 /* A simple check that the hash table is not empty does not require 90 * the mutex or rcu_read_lock. 91 */ 92 return !hash_empty(pf->vfs.table); 93 } 94 95 /** 96 * ice_get_num_vfs - Get number of allocated VFs 97 * @pf: the PF private structure 98 * 99 * Return the total number of allocated VFs. NOTE: VF IDs are not guaranteed 100 * to be contiguous. Do not assume that a VF ID is guaranteed to be less than 101 * the output of this function. 102 */ 103 u16 ice_get_num_vfs(struct ice_pf *pf) 104 { 105 struct ice_vf *vf; 106 unsigned int bkt; 107 u16 num_vfs = 0; 108 109 rcu_read_lock(); 110 ice_for_each_vf_rcu(pf, bkt, vf) 111 num_vfs++; 112 rcu_read_unlock(); 113 114 return num_vfs; 115 } 116 117 /** 118 * ice_get_vf_vsi - get VF's VSI based on the stored index 119 * @vf: VF used to get VSI 120 */ 121 struct ice_vsi *ice_get_vf_vsi(struct ice_vf *vf) 122 { 123 if (vf->lan_vsi_idx == ICE_NO_VSI) 124 return NULL; 125 126 return vf->pf->vsi[vf->lan_vsi_idx]; 127 } 128 129 /** 130 * ice_is_vf_disabled 131 * @vf: pointer to the VF info 132 * 133 * If the PF has been disabled, there is no need resetting VF until PF is 134 * active again. Similarly, if the VF has been disabled, this means something 135 * else is resetting the VF, so we shouldn't continue. 136 * 137 * Returns true if the caller should consider the VF as disabled whether 138 * because that single VF is explicitly disabled or because the PF is 139 * currently disabled. 140 */ 141 bool ice_is_vf_disabled(struct ice_vf *vf) 142 { 143 struct ice_pf *pf = vf->pf; 144 145 return (test_bit(ICE_VF_DIS, pf->state) || 146 test_bit(ICE_VF_STATE_DIS, vf->vf_states)); 147 } 148 149 /** 150 * ice_wait_on_vf_reset - poll to make sure a given VF is ready after reset 151 * @vf: The VF being resseting 152 * 153 * The max poll time is about ~800ms, which is about the maximum time it takes 154 * for a VF to be reset and/or a VF driver to be removed. 155 */ 156 static void ice_wait_on_vf_reset(struct ice_vf *vf) 157 { 158 int i; 159 160 for (i = 0; i < ICE_MAX_VF_RESET_TRIES; i++) { 161 if (test_bit(ICE_VF_STATE_INIT, vf->vf_states)) 162 break; 163 msleep(ICE_MAX_VF_RESET_SLEEP_MS); 164 } 165 } 166 167 /** 168 * ice_check_vf_ready_for_cfg - check if VF is ready to be configured/queried 169 * @vf: VF to check if it's ready to be configured/queried 170 * 171 * The purpose of this function is to make sure the VF is not in reset, not 172 * disabled, and initialized so it can be configured and/or queried by a host 173 * administrator. 174 */ 175 int ice_check_vf_ready_for_cfg(struct ice_vf *vf) 176 { 177 ice_wait_on_vf_reset(vf); 178 179 if (ice_is_vf_disabled(vf)) 180 return -EINVAL; 181 182 if (ice_check_vf_init(vf)) 183 return -EBUSY; 184 185 return 0; 186 } 187 188 /** 189 * ice_trigger_vf_reset - Reset a VF on HW 190 * @vf: pointer to the VF structure 191 * @is_vflr: true if VFLR was issued, false if not 192 * @is_pfr: true if the reset was triggered due to a previous PFR 193 * 194 * Trigger hardware to start a reset for a particular VF. Expects the caller 195 * to wait the proper amount of time to allow hardware to reset the VF before 196 * it cleans up and restores VF functionality. 197 */ 198 static void ice_trigger_vf_reset(struct ice_vf *vf, bool is_vflr, bool is_pfr) 199 { 200 /* Inform VF that it is no longer active, as a warning */ 201 clear_bit(ICE_VF_STATE_ACTIVE, vf->vf_states); 202 203 /* Disable VF's configuration API during reset. The flag is re-enabled 204 * when it's safe again to access VF's VSI. 205 */ 206 clear_bit(ICE_VF_STATE_INIT, vf->vf_states); 207 208 /* VF_MBX_ARQLEN and VF_MBX_ATQLEN are cleared by PFR, so the driver 209 * needs to clear them in the case of VFR/VFLR. If this is done for 210 * PFR, it can mess up VF resets because the VF driver may already 211 * have started cleanup by the time we get here. 212 */ 213 if (!is_pfr) 214 vf->vf_ops->clear_mbx_register(vf); 215 216 vf->vf_ops->trigger_reset_register(vf, is_vflr); 217 } 218 219 static void ice_vf_clear_counters(struct ice_vf *vf) 220 { 221 struct ice_vsi *vsi = ice_get_vf_vsi(vf); 222 223 if (vsi) 224 vsi->num_vlan = 0; 225 226 vf->num_mac = 0; 227 memset(&vf->mdd_tx_events, 0, sizeof(vf->mdd_tx_events)); 228 memset(&vf->mdd_rx_events, 0, sizeof(vf->mdd_rx_events)); 229 } 230 231 /** 232 * ice_vf_pre_vsi_rebuild - tasks to be done prior to VSI rebuild 233 * @vf: VF to perform pre VSI rebuild tasks 234 * 235 * These tasks are items that don't need to be amortized since they are most 236 * likely called in a for loop with all VF(s) in the reset_all_vfs() case. 237 */ 238 static void ice_vf_pre_vsi_rebuild(struct ice_vf *vf) 239 { 240 ice_vf_clear_counters(vf); 241 vf->vf_ops->clear_reset_trigger(vf); 242 } 243 244 /** 245 * ice_vf_rebuild_vsi - rebuild the VF's VSI 246 * @vf: VF to rebuild the VSI for 247 * 248 * This is only called when all VF(s) are being reset (i.e. PCIe Reset on the 249 * host, PFR, CORER, etc.). 250 */ 251 static int ice_vf_rebuild_vsi(struct ice_vf *vf) 252 { 253 struct ice_vsi *vsi = ice_get_vf_vsi(vf); 254 struct ice_pf *pf = vf->pf; 255 256 if (WARN_ON(!vsi)) 257 return -EINVAL; 258 259 if (ice_vsi_rebuild(vsi, true)) { 260 dev_err(ice_pf_to_dev(pf), "failed to rebuild VF %d VSI\n", 261 vf->vf_id); 262 return -EIO; 263 } 264 /* vsi->idx will remain the same in this case so don't update 265 * vf->lan_vsi_idx 266 */ 267 vsi->vsi_num = ice_get_hw_vsi_num(&pf->hw, vsi->idx); 268 vf->lan_vsi_num = vsi->vsi_num; 269 270 return 0; 271 } 272 273 /** 274 * ice_is_any_vf_in_promisc - check if any VF(s) are in promiscuous mode 275 * @pf: PF structure for accessing VF(s) 276 * 277 * Return false if no VF(s) are in unicast and/or multicast promiscuous mode, 278 * else return true 279 */ 280 bool ice_is_any_vf_in_promisc(struct ice_pf *pf) 281 { 282 bool is_vf_promisc = false; 283 struct ice_vf *vf; 284 unsigned int bkt; 285 286 rcu_read_lock(); 287 ice_for_each_vf_rcu(pf, bkt, vf) { 288 /* found a VF that has promiscuous mode configured */ 289 if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) || 290 test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states)) { 291 is_vf_promisc = true; 292 break; 293 } 294 } 295 rcu_read_unlock(); 296 297 return is_vf_promisc; 298 } 299 300 /** 301 * ice_vf_set_vsi_promisc - Enable promiscuous mode for a VF VSI 302 * @vf: the VF to configure 303 * @vsi: the VF's VSI 304 * @promisc_m: the promiscuous mode to enable 305 */ 306 int 307 ice_vf_set_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m) 308 { 309 struct ice_hw *hw = &vsi->back->hw; 310 int status; 311 312 if (ice_vf_is_port_vlan_ena(vf)) 313 status = ice_fltr_set_vsi_promisc(hw, vsi->idx, promisc_m, 314 ice_vf_get_port_vlan_id(vf)); 315 else if (ice_vsi_has_non_zero_vlans(vsi)) 316 status = ice_fltr_set_vlan_vsi_promisc(hw, vsi, promisc_m); 317 else 318 status = ice_fltr_set_vsi_promisc(hw, vsi->idx, promisc_m, 0); 319 320 if (status && status != -EEXIST) { 321 dev_err(ice_pf_to_dev(vsi->back), "enable Tx/Rx filter promiscuous mode on VF-%u failed, error: %d\n", 322 vf->vf_id, status); 323 return status; 324 } 325 326 return 0; 327 } 328 329 /** 330 * ice_vf_clear_vsi_promisc - Disable promiscuous mode for a VF VSI 331 * @vf: the VF to configure 332 * @vsi: the VF's VSI 333 * @promisc_m: the promiscuous mode to disable 334 */ 335 int 336 ice_vf_clear_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m) 337 { 338 struct ice_hw *hw = &vsi->back->hw; 339 int status; 340 341 if (ice_vf_is_port_vlan_ena(vf)) 342 status = ice_fltr_clear_vsi_promisc(hw, vsi->idx, promisc_m, 343 ice_vf_get_port_vlan_id(vf)); 344 else if (ice_vsi_has_non_zero_vlans(vsi)) 345 status = ice_fltr_clear_vlan_vsi_promisc(hw, vsi, promisc_m); 346 else 347 status = ice_fltr_clear_vsi_promisc(hw, vsi->idx, promisc_m, 0); 348 349 if (status && status != -ENOENT) { 350 dev_err(ice_pf_to_dev(vsi->back), "disable Tx/Rx filter promiscuous mode on VF-%u failed, error: %d\n", 351 vf->vf_id, status); 352 return status; 353 } 354 355 return 0; 356 } 357 358 /** 359 * ice_reset_all_vfs - reset all allocated VFs in one go 360 * @pf: pointer to the PF structure 361 * 362 * Reset all VFs at once, in response to a PF or other device reset. 363 * 364 * First, tell the hardware to reset each VF, then do all the waiting in one 365 * chunk, and finally finish restoring each VF after the wait. This is useful 366 * during PF routines which need to reset all VFs, as otherwise it must perform 367 * these resets in a serialized fashion. 368 */ 369 void ice_reset_all_vfs(struct ice_pf *pf) 370 { 371 struct device *dev = ice_pf_to_dev(pf); 372 struct ice_hw *hw = &pf->hw; 373 struct ice_vf *vf; 374 unsigned int bkt; 375 376 /* If we don't have any VFs, then there is nothing to reset */ 377 if (!ice_has_vfs(pf)) 378 return; 379 380 mutex_lock(&pf->vfs.table_lock); 381 382 /* clear all malicious info if the VFs are getting reset */ 383 ice_for_each_vf(pf, bkt, vf) 384 if (ice_mbx_clear_malvf(&hw->mbx_snapshot, pf->vfs.malvfs, 385 ICE_MAX_SRIOV_VFS, vf->vf_id)) 386 dev_dbg(dev, "failed to clear malicious VF state for VF %u\n", 387 vf->vf_id); 388 389 /* If VFs have been disabled, there is no need to reset */ 390 if (test_and_set_bit(ICE_VF_DIS, pf->state)) { 391 mutex_unlock(&pf->vfs.table_lock); 392 return; 393 } 394 395 /* Begin reset on all VFs at once */ 396 ice_for_each_vf(pf, bkt, vf) 397 ice_trigger_vf_reset(vf, true, true); 398 399 /* HW requires some time to make sure it can flush the FIFO for a VF 400 * when it resets it. Now that we've triggered all of the VFs, iterate 401 * the table again and wait for each VF to complete. 402 */ 403 ice_for_each_vf(pf, bkt, vf) { 404 if (!vf->vf_ops->poll_reset_status(vf)) { 405 /* Display a warning if at least one VF didn't manage 406 * to reset in time, but continue on with the 407 * operation. 408 */ 409 dev_warn(dev, "VF %u reset check timeout\n", vf->vf_id); 410 break; 411 } 412 } 413 414 /* free VF resources to begin resetting the VSI state */ 415 ice_for_each_vf(pf, bkt, vf) { 416 mutex_lock(&vf->cfg_lock); 417 418 vf->driver_caps = 0; 419 ice_vc_set_default_allowlist(vf); 420 421 ice_vf_fdir_exit(vf); 422 ice_vf_fdir_init(vf); 423 /* clean VF control VSI when resetting VFs since it should be 424 * setup only when VF creates its first FDIR rule. 425 */ 426 if (vf->ctrl_vsi_idx != ICE_NO_VSI) 427 ice_vf_ctrl_invalidate_vsi(vf); 428 429 ice_vf_pre_vsi_rebuild(vf); 430 ice_vf_rebuild_vsi(vf); 431 vf->vf_ops->post_vsi_rebuild(vf); 432 433 mutex_unlock(&vf->cfg_lock); 434 } 435 436 if (ice_is_eswitch_mode_switchdev(pf)) 437 if (ice_eswitch_rebuild(pf)) 438 dev_warn(dev, "eswitch rebuild failed\n"); 439 440 ice_flush(hw); 441 clear_bit(ICE_VF_DIS, pf->state); 442 443 mutex_unlock(&pf->vfs.table_lock); 444 } 445 446 /** 447 * ice_notify_vf_reset - Notify VF of a reset event 448 * @vf: pointer to the VF structure 449 */ 450 static void ice_notify_vf_reset(struct ice_vf *vf) 451 { 452 struct ice_hw *hw = &vf->pf->hw; 453 struct virtchnl_pf_event pfe; 454 455 /* Bail out if VF is in disabled state, neither initialized, nor active 456 * state - otherwise proceed with notifications 457 */ 458 if ((!test_bit(ICE_VF_STATE_INIT, vf->vf_states) && 459 !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) || 460 test_bit(ICE_VF_STATE_DIS, vf->vf_states)) 461 return; 462 463 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING; 464 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM; 465 ice_aq_send_msg_to_vf(hw, vf->vf_id, VIRTCHNL_OP_EVENT, 466 VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe, sizeof(pfe), 467 NULL); 468 } 469 470 /** 471 * ice_reset_vf - Reset a particular VF 472 * @vf: pointer to the VF structure 473 * @flags: flags controlling behavior of the reset 474 * 475 * Flags: 476 * ICE_VF_RESET_VFLR - Indicates a reset is due to VFLR event 477 * ICE_VF_RESET_NOTIFY - Send VF a notification prior to reset 478 * ICE_VF_RESET_LOCK - Acquire VF cfg_lock before resetting 479 * 480 * Returns 0 if the VF is currently in reset, if resets are disabled, or if 481 * the VF resets successfully. Returns an error code if the VF fails to 482 * rebuild. 483 */ 484 int ice_reset_vf(struct ice_vf *vf, u32 flags) 485 { 486 struct ice_pf *pf = vf->pf; 487 struct ice_vsi *vsi; 488 struct device *dev; 489 struct ice_hw *hw; 490 u8 promisc_m; 491 int err = 0; 492 bool rsd; 493 494 dev = ice_pf_to_dev(pf); 495 hw = &pf->hw; 496 497 if (flags & ICE_VF_RESET_NOTIFY) 498 ice_notify_vf_reset(vf); 499 500 if (test_bit(ICE_VF_RESETS_DISABLED, pf->state)) { 501 dev_dbg(dev, "Trying to reset VF %d, but all VF resets are disabled\n", 502 vf->vf_id); 503 return 0; 504 } 505 506 if (ice_is_vf_disabled(vf)) { 507 vsi = ice_get_vf_vsi(vf); 508 if (WARN_ON(!vsi)) 509 return -EINVAL; 510 ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id); 511 ice_vsi_stop_all_rx_rings(vsi); 512 dev_dbg(dev, "VF is already disabled, there is no need for resetting it, telling VM, all is fine %d\n", 513 vf->vf_id); 514 return 0; 515 } 516 517 if (flags & ICE_VF_RESET_LOCK) 518 mutex_lock(&vf->cfg_lock); 519 else 520 lockdep_assert_held(&vf->cfg_lock); 521 522 /* Set VF disable bit state here, before triggering reset */ 523 set_bit(ICE_VF_STATE_DIS, vf->vf_states); 524 ice_trigger_vf_reset(vf, flags & ICE_VF_RESET_VFLR, false); 525 526 vsi = ice_get_vf_vsi(vf); 527 if (WARN_ON(!vsi)) { 528 err = -EIO; 529 goto out_unlock; 530 } 531 532 ice_dis_vf_qs(vf); 533 534 /* Call Disable LAN Tx queue AQ whether or not queues are 535 * enabled. This is needed for successful completion of VFR. 536 */ 537 ice_dis_vsi_txq(vsi->port_info, vsi->idx, 0, 0, NULL, NULL, 538 NULL, vf->vf_ops->reset_type, vf->vf_id, NULL); 539 540 /* poll VPGEN_VFRSTAT reg to make sure 541 * that reset is complete 542 */ 543 rsd = vf->vf_ops->poll_reset_status(vf); 544 545 /* Display a warning if VF didn't manage to reset in time, but need to 546 * continue on with the operation. 547 */ 548 if (!rsd) 549 dev_warn(dev, "VF reset check timeout on VF %d\n", vf->vf_id); 550 551 vf->driver_caps = 0; 552 ice_vc_set_default_allowlist(vf); 553 554 /* disable promiscuous modes in case they were enabled 555 * ignore any error if disabling process failed 556 */ 557 if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) || 558 test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states)) { 559 if (ice_vf_is_port_vlan_ena(vf) || vsi->num_vlan) 560 promisc_m = ICE_UCAST_VLAN_PROMISC_BITS; 561 else 562 promisc_m = ICE_UCAST_PROMISC_BITS; 563 564 if (ice_vf_clear_vsi_promisc(vf, vsi, promisc_m)) 565 dev_err(dev, "disabling promiscuous mode failed\n"); 566 } 567 568 ice_eswitch_del_vf_mac_rule(vf); 569 570 ice_vf_fdir_exit(vf); 571 ice_vf_fdir_init(vf); 572 /* clean VF control VSI when resetting VF since it should be setup 573 * only when VF creates its first FDIR rule. 574 */ 575 if (vf->ctrl_vsi_idx != ICE_NO_VSI) 576 ice_vf_ctrl_vsi_release(vf); 577 578 ice_vf_pre_vsi_rebuild(vf); 579 580 if (vf->vf_ops->vsi_rebuild(vf)) { 581 dev_err(dev, "Failed to release and setup the VF%u's VSI\n", 582 vf->vf_id); 583 err = -EFAULT; 584 goto out_unlock; 585 } 586 587 vf->vf_ops->post_vsi_rebuild(vf); 588 vsi = ice_get_vf_vsi(vf); 589 if (WARN_ON(!vsi)) { 590 err = -EINVAL; 591 goto out_unlock; 592 } 593 594 ice_eswitch_update_repr(vsi); 595 ice_eswitch_replay_vf_mac_rule(vf); 596 597 /* if the VF has been reset allow it to come up again */ 598 if (ice_mbx_clear_malvf(&hw->mbx_snapshot, pf->vfs.malvfs, 599 ICE_MAX_SRIOV_VFS, vf->vf_id)) 600 dev_dbg(dev, "failed to clear malicious VF state for VF %u\n", 601 vf->vf_id); 602 603 out_unlock: 604 if (flags & ICE_VF_RESET_LOCK) 605 mutex_unlock(&vf->cfg_lock); 606 607 return err; 608 } 609 610 /** 611 * ice_set_vf_state_qs_dis - Set VF queues state to disabled 612 * @vf: pointer to the VF structure 613 */ 614 void ice_set_vf_state_qs_dis(struct ice_vf *vf) 615 { 616 /* Clear Rx/Tx enabled queues flag */ 617 bitmap_zero(vf->txq_ena, ICE_MAX_RSS_QS_PER_VF); 618 bitmap_zero(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF); 619 clear_bit(ICE_VF_STATE_QS_ENA, vf->vf_states); 620 } 621 622 /* Private functions only accessed from other virtualization files */ 623 624 /** 625 * ice_dis_vf_qs - Disable the VF queues 626 * @vf: pointer to the VF structure 627 */ 628 void ice_dis_vf_qs(struct ice_vf *vf) 629 { 630 struct ice_vsi *vsi = ice_get_vf_vsi(vf); 631 632 if (WARN_ON(!vsi)) 633 return; 634 635 ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id); 636 ice_vsi_stop_all_rx_rings(vsi); 637 ice_set_vf_state_qs_dis(vf); 638 } 639 640 /** 641 * ice_check_vf_init - helper to check if VF init complete 642 * @vf: the pointer to the VF to check 643 */ 644 int ice_check_vf_init(struct ice_vf *vf) 645 { 646 struct ice_pf *pf = vf->pf; 647 648 if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) { 649 dev_err(ice_pf_to_dev(pf), "VF ID: %u in reset. Try again.\n", 650 vf->vf_id); 651 return -EBUSY; 652 } 653 return 0; 654 } 655 656 /** 657 * ice_vf_get_port_info - Get the VF's port info structure 658 * @vf: VF used to get the port info structure for 659 */ 660 struct ice_port_info *ice_vf_get_port_info(struct ice_vf *vf) 661 { 662 return vf->pf->hw.port_info; 663 } 664 665 /** 666 * ice_cfg_mac_antispoof - Configure MAC antispoof checking behavior 667 * @vsi: the VSI to configure 668 * @enable: whether to enable or disable the spoof checking 669 * 670 * Configure a VSI to enable (or disable) spoof checking behavior. 671 */ 672 static int ice_cfg_mac_antispoof(struct ice_vsi *vsi, bool enable) 673 { 674 struct ice_vsi_ctx *ctx; 675 int err; 676 677 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 678 if (!ctx) 679 return -ENOMEM; 680 681 ctx->info.sec_flags = vsi->info.sec_flags; 682 ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID); 683 684 if (enable) 685 ctx->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF; 686 else 687 ctx->info.sec_flags &= ~ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF; 688 689 err = ice_update_vsi(&vsi->back->hw, vsi->idx, ctx, NULL); 690 if (err) 691 dev_err(ice_pf_to_dev(vsi->back), "Failed to configure Tx MAC anti-spoof %s for VSI %d, error %d\n", 692 enable ? "ON" : "OFF", vsi->vsi_num, err); 693 else 694 vsi->info.sec_flags = ctx->info.sec_flags; 695 696 kfree(ctx); 697 698 return err; 699 } 700 701 /** 702 * ice_vsi_ena_spoofchk - enable Tx spoof checking for this VSI 703 * @vsi: VSI to enable Tx spoof checking for 704 */ 705 static int ice_vsi_ena_spoofchk(struct ice_vsi *vsi) 706 { 707 struct ice_vsi_vlan_ops *vlan_ops; 708 int err; 709 710 vlan_ops = ice_get_compat_vsi_vlan_ops(vsi); 711 712 err = vlan_ops->ena_tx_filtering(vsi); 713 if (err) 714 return err; 715 716 return ice_cfg_mac_antispoof(vsi, true); 717 } 718 719 /** 720 * ice_vsi_dis_spoofchk - disable Tx spoof checking for this VSI 721 * @vsi: VSI to disable Tx spoof checking for 722 */ 723 static int ice_vsi_dis_spoofchk(struct ice_vsi *vsi) 724 { 725 struct ice_vsi_vlan_ops *vlan_ops; 726 int err; 727 728 vlan_ops = ice_get_compat_vsi_vlan_ops(vsi); 729 730 err = vlan_ops->dis_tx_filtering(vsi); 731 if (err) 732 return err; 733 734 return ice_cfg_mac_antispoof(vsi, false); 735 } 736 737 /** 738 * ice_vsi_apply_spoofchk - Apply Tx spoof checking setting to a VSI 739 * @vsi: VSI associated to the VF 740 * @enable: whether to enable or disable the spoof checking 741 */ 742 int ice_vsi_apply_spoofchk(struct ice_vsi *vsi, bool enable) 743 { 744 int err; 745 746 if (enable) 747 err = ice_vsi_ena_spoofchk(vsi); 748 else 749 err = ice_vsi_dis_spoofchk(vsi); 750 751 return err; 752 } 753 754 /** 755 * ice_is_vf_trusted 756 * @vf: pointer to the VF info 757 */ 758 bool ice_is_vf_trusted(struct ice_vf *vf) 759 { 760 return test_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps); 761 } 762 763 /** 764 * ice_vf_has_no_qs_ena - check if the VF has any Rx or Tx queues enabled 765 * @vf: the VF to check 766 * 767 * Returns true if the VF has no Rx and no Tx queues enabled and returns false 768 * otherwise 769 */ 770 bool ice_vf_has_no_qs_ena(struct ice_vf *vf) 771 { 772 return (!bitmap_weight(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF) && 773 !bitmap_weight(vf->txq_ena, ICE_MAX_RSS_QS_PER_VF)); 774 } 775 776 /** 777 * ice_is_vf_link_up - check if the VF's link is up 778 * @vf: VF to check if link is up 779 */ 780 bool ice_is_vf_link_up(struct ice_vf *vf) 781 { 782 struct ice_port_info *pi = ice_vf_get_port_info(vf); 783 784 if (ice_check_vf_init(vf)) 785 return false; 786 787 if (ice_vf_has_no_qs_ena(vf)) 788 return false; 789 else if (vf->link_forced) 790 return vf->link_up; 791 else 792 return pi->phy.link_info.link_info & 793 ICE_AQ_LINK_UP; 794 } 795 796 /** 797 * ice_vf_set_host_trust_cfg - set trust setting based on pre-reset value 798 * @vf: VF to configure trust setting for 799 */ 800 static void ice_vf_set_host_trust_cfg(struct ice_vf *vf) 801 { 802 if (vf->trusted) 803 set_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps); 804 else 805 clear_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps); 806 } 807 808 /** 809 * ice_vf_rebuild_host_mac_cfg - add broadcast and the VF's perm_addr/LAA 810 * @vf: VF to add MAC filters for 811 * 812 * Called after a VF VSI has been re-added/rebuilt during reset. The PF driver 813 * always re-adds a broadcast filter and the VF's perm_addr/LAA after reset. 814 */ 815 static int ice_vf_rebuild_host_mac_cfg(struct ice_vf *vf) 816 { 817 struct device *dev = ice_pf_to_dev(vf->pf); 818 struct ice_vsi *vsi = ice_get_vf_vsi(vf); 819 u8 broadcast[ETH_ALEN]; 820 int status; 821 822 if (WARN_ON(!vsi)) 823 return -EINVAL; 824 825 if (ice_is_eswitch_mode_switchdev(vf->pf)) 826 return 0; 827 828 eth_broadcast_addr(broadcast); 829 status = ice_fltr_add_mac(vsi, broadcast, ICE_FWD_TO_VSI); 830 if (status) { 831 dev_err(dev, "failed to add broadcast MAC filter for VF %u, error %d\n", 832 vf->vf_id, status); 833 return status; 834 } 835 836 vf->num_mac++; 837 838 if (is_valid_ether_addr(vf->hw_lan_addr.addr)) { 839 status = ice_fltr_add_mac(vsi, vf->hw_lan_addr.addr, 840 ICE_FWD_TO_VSI); 841 if (status) { 842 dev_err(dev, "failed to add default unicast MAC filter %pM for VF %u, error %d\n", 843 &vf->hw_lan_addr.addr[0], vf->vf_id, 844 status); 845 return status; 846 } 847 vf->num_mac++; 848 849 ether_addr_copy(vf->dev_lan_addr.addr, vf->hw_lan_addr.addr); 850 } 851 852 return 0; 853 } 854 855 /** 856 * ice_vf_rebuild_host_vlan_cfg - add VLAN 0 filter or rebuild the Port VLAN 857 * @vf: VF to add MAC filters for 858 * @vsi: Pointer to VSI 859 * 860 * Called after a VF VSI has been re-added/rebuilt during reset. The PF driver 861 * always re-adds either a VLAN 0 or port VLAN based filter after reset. 862 */ 863 static int ice_vf_rebuild_host_vlan_cfg(struct ice_vf *vf, struct ice_vsi *vsi) 864 { 865 struct ice_vsi_vlan_ops *vlan_ops = ice_get_compat_vsi_vlan_ops(vsi); 866 struct device *dev = ice_pf_to_dev(vf->pf); 867 int err; 868 869 if (ice_vf_is_port_vlan_ena(vf)) { 870 err = vlan_ops->set_port_vlan(vsi, &vf->port_vlan_info); 871 if (err) { 872 dev_err(dev, "failed to configure port VLAN via VSI parameters for VF %u, error %d\n", 873 vf->vf_id, err); 874 return err; 875 } 876 877 err = vlan_ops->add_vlan(vsi, &vf->port_vlan_info); 878 } else { 879 err = ice_vsi_add_vlan_zero(vsi); 880 } 881 882 if (err) { 883 dev_err(dev, "failed to add VLAN %u filter for VF %u during VF rebuild, error %d\n", 884 ice_vf_is_port_vlan_ena(vf) ? 885 ice_vf_get_port_vlan_id(vf) : 0, vf->vf_id, err); 886 return err; 887 } 888 889 err = vlan_ops->ena_rx_filtering(vsi); 890 if (err) 891 dev_warn(dev, "failed to enable Rx VLAN filtering for VF %d VSI %d during VF rebuild, error %d\n", 892 vf->vf_id, vsi->idx, err); 893 894 return 0; 895 } 896 897 /** 898 * ice_vf_rebuild_host_tx_rate_cfg - re-apply the Tx rate limiting configuration 899 * @vf: VF to re-apply the configuration for 900 * 901 * Called after a VF VSI has been re-added/rebuild during reset. The PF driver 902 * needs to re-apply the host configured Tx rate limiting configuration. 903 */ 904 static int ice_vf_rebuild_host_tx_rate_cfg(struct ice_vf *vf) 905 { 906 struct device *dev = ice_pf_to_dev(vf->pf); 907 struct ice_vsi *vsi = ice_get_vf_vsi(vf); 908 int err; 909 910 if (WARN_ON(!vsi)) 911 return -EINVAL; 912 913 if (vf->min_tx_rate) { 914 err = ice_set_min_bw_limit(vsi, (u64)vf->min_tx_rate * 1000); 915 if (err) { 916 dev_err(dev, "failed to set min Tx rate to %d Mbps for VF %u, error %d\n", 917 vf->min_tx_rate, vf->vf_id, err); 918 return err; 919 } 920 } 921 922 if (vf->max_tx_rate) { 923 err = ice_set_max_bw_limit(vsi, (u64)vf->max_tx_rate * 1000); 924 if (err) { 925 dev_err(dev, "failed to set max Tx rate to %d Mbps for VF %u, error %d\n", 926 vf->max_tx_rate, vf->vf_id, err); 927 return err; 928 } 929 } 930 931 return 0; 932 } 933 934 /** 935 * ice_vf_rebuild_aggregator_node_cfg - rebuild aggregator node config 936 * @vsi: Pointer to VSI 937 * 938 * This function moves VSI into corresponding scheduler aggregator node 939 * based on cached value of "aggregator node info" per VSI 940 */ 941 static void ice_vf_rebuild_aggregator_node_cfg(struct ice_vsi *vsi) 942 { 943 struct ice_pf *pf = vsi->back; 944 struct device *dev; 945 int status; 946 947 if (!vsi->agg_node) 948 return; 949 950 dev = ice_pf_to_dev(pf); 951 if (vsi->agg_node->num_vsis == ICE_MAX_VSIS_IN_AGG_NODE) { 952 dev_dbg(dev, 953 "agg_id %u already has reached max_num_vsis %u\n", 954 vsi->agg_node->agg_id, vsi->agg_node->num_vsis); 955 return; 956 } 957 958 status = ice_move_vsi_to_agg(pf->hw.port_info, vsi->agg_node->agg_id, 959 vsi->idx, vsi->tc_cfg.ena_tc); 960 if (status) 961 dev_dbg(dev, "unable to move VSI idx %u into aggregator %u node", 962 vsi->idx, vsi->agg_node->agg_id); 963 else 964 vsi->agg_node->num_vsis++; 965 } 966 967 /** 968 * ice_vf_rebuild_host_cfg - host admin configuration is persistent across reset 969 * @vf: VF to rebuild host configuration on 970 */ 971 void ice_vf_rebuild_host_cfg(struct ice_vf *vf) 972 { 973 struct device *dev = ice_pf_to_dev(vf->pf); 974 struct ice_vsi *vsi = ice_get_vf_vsi(vf); 975 976 if (WARN_ON(!vsi)) 977 return; 978 979 ice_vf_set_host_trust_cfg(vf); 980 981 if (ice_vf_rebuild_host_mac_cfg(vf)) 982 dev_err(dev, "failed to rebuild default MAC configuration for VF %d\n", 983 vf->vf_id); 984 985 if (ice_vf_rebuild_host_vlan_cfg(vf, vsi)) 986 dev_err(dev, "failed to rebuild VLAN configuration for VF %u\n", 987 vf->vf_id); 988 989 if (ice_vf_rebuild_host_tx_rate_cfg(vf)) 990 dev_err(dev, "failed to rebuild Tx rate limiting configuration for VF %u\n", 991 vf->vf_id); 992 993 if (ice_vsi_apply_spoofchk(vsi, vf->spoofchk)) 994 dev_err(dev, "failed to rebuild spoofchk configuration for VF %d\n", 995 vf->vf_id); 996 997 /* rebuild aggregator node config for main VF VSI */ 998 ice_vf_rebuild_aggregator_node_cfg(vsi); 999 } 1000 1001 /** 1002 * ice_vf_ctrl_invalidate_vsi - invalidate ctrl_vsi_idx to remove VSI access 1003 * @vf: VF that control VSI is being invalidated on 1004 */ 1005 void ice_vf_ctrl_invalidate_vsi(struct ice_vf *vf) 1006 { 1007 vf->ctrl_vsi_idx = ICE_NO_VSI; 1008 } 1009 1010 /** 1011 * ice_vf_ctrl_vsi_release - invalidate the VF's control VSI after freeing it 1012 * @vf: VF that control VSI is being released on 1013 */ 1014 void ice_vf_ctrl_vsi_release(struct ice_vf *vf) 1015 { 1016 ice_vsi_release(vf->pf->vsi[vf->ctrl_vsi_idx]); 1017 ice_vf_ctrl_invalidate_vsi(vf); 1018 } 1019 1020 /** 1021 * ice_vf_ctrl_vsi_setup - Set up a VF control VSI 1022 * @vf: VF to setup control VSI for 1023 * 1024 * Returns pointer to the successfully allocated VSI struct on success, 1025 * otherwise returns NULL on failure. 1026 */ 1027 struct ice_vsi *ice_vf_ctrl_vsi_setup(struct ice_vf *vf) 1028 { 1029 struct ice_port_info *pi = ice_vf_get_port_info(vf); 1030 struct ice_pf *pf = vf->pf; 1031 struct ice_vsi *vsi; 1032 1033 vsi = ice_vsi_setup(pf, pi, ICE_VSI_CTRL, vf, NULL); 1034 if (!vsi) { 1035 dev_err(ice_pf_to_dev(pf), "Failed to create VF control VSI\n"); 1036 ice_vf_ctrl_invalidate_vsi(vf); 1037 } 1038 1039 return vsi; 1040 } 1041 1042 /** 1043 * ice_vf_invalidate_vsi - invalidate vsi_idx/vsi_num to remove VSI access 1044 * @vf: VF to remove access to VSI for 1045 */ 1046 void ice_vf_invalidate_vsi(struct ice_vf *vf) 1047 { 1048 vf->lan_vsi_idx = ICE_NO_VSI; 1049 vf->lan_vsi_num = ICE_NO_VSI; 1050 } 1051 1052 /** 1053 * ice_vf_set_initialized - VF is ready for VIRTCHNL communication 1054 * @vf: VF to set in initialized state 1055 * 1056 * After this function the VF will be ready to receive/handle the 1057 * VIRTCHNL_OP_GET_VF_RESOURCES message 1058 */ 1059 void ice_vf_set_initialized(struct ice_vf *vf) 1060 { 1061 ice_set_vf_state_qs_dis(vf); 1062 clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states); 1063 clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states); 1064 clear_bit(ICE_VF_STATE_DIS, vf->vf_states); 1065 set_bit(ICE_VF_STATE_INIT, vf->vf_states); 1066 memset(&vf->vlan_v2_caps, 0, sizeof(vf->vlan_v2_caps)); 1067 } 1068