1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2013 - 2018 Intel Corporation. */ 3 4 #include "i40e.h" 5 #include "i40e_lan_hmc.h" 6 #include "i40e_virtchnl_pf.h" 7 8 /*********************notification routines***********************/ 9 10 /** 11 * i40e_vc_vf_broadcast 12 * @pf: pointer to the PF structure 13 * @v_opcode: operation code 14 * @v_retval: return value 15 * @msg: pointer to the msg buffer 16 * @msglen: msg length 17 * 18 * send a message to all VFs on a given PF 19 **/ i40e_vc_vf_broadcast(struct i40e_pf * pf,enum virtchnl_ops v_opcode,int v_retval,u8 * msg,u16 msglen)20 static void i40e_vc_vf_broadcast(struct i40e_pf *pf, 21 enum virtchnl_ops v_opcode, 22 int v_retval, u8 *msg, 23 u16 msglen) 24 { 25 struct i40e_hw *hw = &pf->hw; 26 struct i40e_vf *vf = pf->vf; 27 int i; 28 29 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) { 30 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id; 31 /* Not all vfs are enabled so skip the ones that are not */ 32 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) && 33 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) 34 continue; 35 36 /* Ignore return value on purpose - a given VF may fail, but 37 * we need to keep going and send to all of them 38 */ 39 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval, 40 msg, msglen, NULL); 41 } 42 } 43 44 /** 45 * i40e_vc_link_speed2mbps 46 * converts i40e_aq_link_speed to integer value of Mbps 47 * @link_speed: the speed to convert 48 * 49 * return the speed as direct value of Mbps. 50 **/ 51 static u32 i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)52 i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed) 53 { 54 switch (link_speed) { 55 case I40E_LINK_SPEED_100MB: 56 return SPEED_100; 57 case I40E_LINK_SPEED_1GB: 58 return SPEED_1000; 59 case I40E_LINK_SPEED_2_5GB: 60 return SPEED_2500; 61 case I40E_LINK_SPEED_5GB: 62 return SPEED_5000; 63 case I40E_LINK_SPEED_10GB: 64 return SPEED_10000; 65 case I40E_LINK_SPEED_20GB: 66 return SPEED_20000; 67 case I40E_LINK_SPEED_25GB: 68 return SPEED_25000; 69 case I40E_LINK_SPEED_40GB: 70 return SPEED_40000; 71 case I40E_LINK_SPEED_UNKNOWN: 72 return SPEED_UNKNOWN; 73 } 74 return SPEED_UNKNOWN; 75 } 76 77 /** 78 * i40e_set_vf_link_state 79 * @vf: pointer to the VF structure 80 * @pfe: pointer to PF event structure 81 * @ls: pointer to link status structure 82 * 83 * set a link state on a single vf 84 **/ i40e_set_vf_link_state(struct i40e_vf * vf,struct virtchnl_pf_event * pfe,struct i40e_link_status * ls)85 static void i40e_set_vf_link_state(struct i40e_vf *vf, 86 struct virtchnl_pf_event *pfe, struct i40e_link_status *ls) 87 { 88 u8 link_status = ls->link_info & I40E_AQ_LINK_UP; 89 90 if (vf->link_forced) 91 link_status = vf->link_up; 92 93 if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) { 94 pfe->event_data.link_event_adv.link_speed = link_status ? 95 i40e_vc_link_speed2mbps(ls->link_speed) : 0; 96 pfe->event_data.link_event_adv.link_status = link_status; 97 } else { 98 pfe->event_data.link_event.link_speed = link_status ? 99 i40e_virtchnl_link_speed(ls->link_speed) : 0; 100 pfe->event_data.link_event.link_status = link_status; 101 } 102 } 103 104 /** 105 * i40e_vc_notify_vf_link_state 106 * @vf: pointer to the VF structure 107 * 108 * send a link status message to a single VF 109 **/ i40e_vc_notify_vf_link_state(struct i40e_vf * vf)110 static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf) 111 { 112 struct virtchnl_pf_event pfe; 113 struct i40e_pf *pf = vf->pf; 114 struct i40e_hw *hw = &pf->hw; 115 struct i40e_link_status *ls = &pf->hw.phy.link_info; 116 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id; 117 118 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE; 119 pfe.severity = PF_EVENT_SEVERITY_INFO; 120 121 i40e_set_vf_link_state(vf, &pfe, ls); 122 123 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT, 124 0, (u8 *)&pfe, sizeof(pfe), NULL); 125 } 126 127 /** 128 * i40e_vc_notify_link_state 129 * @pf: pointer to the PF structure 130 * 131 * send a link status message to all VFs on a given PF 132 **/ i40e_vc_notify_link_state(struct i40e_pf * pf)133 void i40e_vc_notify_link_state(struct i40e_pf *pf) 134 { 135 int i; 136 137 for (i = 0; i < pf->num_alloc_vfs; i++) 138 i40e_vc_notify_vf_link_state(&pf->vf[i]); 139 } 140 141 /** 142 * i40e_vc_notify_reset 143 * @pf: pointer to the PF structure 144 * 145 * indicate a pending reset to all VFs on a given PF 146 **/ i40e_vc_notify_reset(struct i40e_pf * pf)147 void i40e_vc_notify_reset(struct i40e_pf *pf) 148 { 149 struct virtchnl_pf_event pfe; 150 151 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING; 152 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM; 153 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0, 154 (u8 *)&pfe, sizeof(struct virtchnl_pf_event)); 155 } 156 157 #ifdef CONFIG_PCI_IOV i40e_restore_all_vfs_msi_state(struct pci_dev * pdev)158 void i40e_restore_all_vfs_msi_state(struct pci_dev *pdev) 159 { 160 u16 vf_id; 161 u16 pos; 162 163 /* Continue only if this is a PF */ 164 if (!pdev->is_physfn) 165 return; 166 167 if (!pci_num_vf(pdev)) 168 return; 169 170 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); 171 if (pos) { 172 struct pci_dev *vf_dev = NULL; 173 174 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id); 175 while ((vf_dev = pci_get_device(pdev->vendor, vf_id, vf_dev))) { 176 if (vf_dev->is_virtfn && vf_dev->physfn == pdev) 177 pci_restore_msi_state(vf_dev); 178 } 179 } 180 } 181 #endif /* CONFIG_PCI_IOV */ 182 183 /** 184 * i40e_vc_notify_vf_reset 185 * @vf: pointer to the VF structure 186 * 187 * indicate a pending reset to the given VF 188 **/ i40e_vc_notify_vf_reset(struct i40e_vf * vf)189 void i40e_vc_notify_vf_reset(struct i40e_vf *vf) 190 { 191 struct virtchnl_pf_event pfe; 192 int abs_vf_id; 193 194 /* validate the request */ 195 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs) 196 return; 197 198 /* verify if the VF is in either init or active before proceeding */ 199 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) && 200 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) 201 return; 202 203 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id; 204 205 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING; 206 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM; 207 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT, 208 0, (u8 *)&pfe, 209 sizeof(struct virtchnl_pf_event), NULL); 210 } 211 /***********************misc routines*****************************/ 212 213 /** 214 * i40e_vc_reset_vf 215 * @vf: pointer to the VF info 216 * @notify_vf: notify vf about reset or not 217 * Reset VF handler. 218 **/ i40e_vc_reset_vf(struct i40e_vf * vf,bool notify_vf)219 static void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf) 220 { 221 struct i40e_pf *pf = vf->pf; 222 int i; 223 224 if (notify_vf) 225 i40e_vc_notify_vf_reset(vf); 226 227 /* We want to ensure that an actual reset occurs initiated after this 228 * function was called. However, we do not want to wait forever, so 229 * we'll give a reasonable time and print a message if we failed to 230 * ensure a reset. 231 */ 232 for (i = 0; i < 20; i++) { 233 /* If PF is in VFs releasing state reset VF is impossible, 234 * so leave it. 235 */ 236 if (test_bit(__I40E_VFS_RELEASING, pf->state)) 237 return; 238 if (i40e_reset_vf(vf, false)) 239 return; 240 usleep_range(10000, 20000); 241 } 242 243 if (notify_vf) 244 dev_warn(&vf->pf->pdev->dev, 245 "Failed to initiate reset for VF %d after 200 milliseconds\n", 246 vf->vf_id); 247 else 248 dev_dbg(&vf->pf->pdev->dev, 249 "Failed to initiate reset for VF %d after 200 milliseconds\n", 250 vf->vf_id); 251 } 252 253 /** 254 * i40e_vc_isvalid_vsi_id 255 * @vf: pointer to the VF info 256 * @vsi_id: VF relative VSI id 257 * 258 * check for the valid VSI id 259 **/ i40e_vc_isvalid_vsi_id(struct i40e_vf * vf,u16 vsi_id)260 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id) 261 { 262 struct i40e_pf *pf = vf->pf; 263 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id); 264 265 return (vsi && (vsi->vf_id == vf->vf_id)); 266 } 267 268 /** 269 * i40e_vc_isvalid_queue_id 270 * @vf: pointer to the VF info 271 * @vsi_id: vsi id 272 * @qid: vsi relative queue id 273 * 274 * check for the valid queue id 275 **/ i40e_vc_isvalid_queue_id(struct i40e_vf * vf,u16 vsi_id,u16 qid)276 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id, 277 u16 qid) 278 { 279 struct i40e_pf *pf = vf->pf; 280 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id); 281 282 return (vsi && (qid < vsi->alloc_queue_pairs)); 283 } 284 285 /** 286 * i40e_vc_isvalid_vector_id 287 * @vf: pointer to the VF info 288 * @vector_id: VF relative vector id 289 * 290 * check for the valid vector id 291 **/ i40e_vc_isvalid_vector_id(struct i40e_vf * vf,u32 vector_id)292 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id) 293 { 294 struct i40e_pf *pf = vf->pf; 295 296 return vector_id < pf->hw.func_caps.num_msix_vectors_vf; 297 } 298 299 /***********************vf resource mgmt routines*****************/ 300 301 /** 302 * i40e_vc_get_pf_queue_id 303 * @vf: pointer to the VF info 304 * @vsi_id: id of VSI as provided by the FW 305 * @vsi_queue_id: vsi relative queue id 306 * 307 * return PF relative queue id 308 **/ i40e_vc_get_pf_queue_id(struct i40e_vf * vf,u16 vsi_id,u8 vsi_queue_id)309 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id, 310 u8 vsi_queue_id) 311 { 312 struct i40e_pf *pf = vf->pf; 313 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id); 314 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST; 315 316 if (!vsi) 317 return pf_queue_id; 318 319 if (le16_to_cpu(vsi->info.mapping_flags) & 320 I40E_AQ_VSI_QUE_MAP_NONCONTIG) 321 pf_queue_id = 322 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]); 323 else 324 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) + 325 vsi_queue_id; 326 327 return pf_queue_id; 328 } 329 330 /** 331 * i40e_get_real_pf_qid 332 * @vf: pointer to the VF info 333 * @vsi_id: vsi id 334 * @queue_id: queue number 335 * 336 * wrapper function to get pf_queue_id handling ADq code as well 337 **/ i40e_get_real_pf_qid(struct i40e_vf * vf,u16 vsi_id,u16 queue_id)338 static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id) 339 { 340 int i; 341 342 if (vf->adq_enabled) { 343 /* Although VF considers all the queues(can be 1 to 16) as its 344 * own but they may actually belong to different VSIs(up to 4). 345 * We need to find which queues belongs to which VSI. 346 */ 347 for (i = 0; i < vf->num_tc; i++) { 348 if (queue_id < vf->ch[i].num_qps) { 349 vsi_id = vf->ch[i].vsi_id; 350 break; 351 } 352 /* find right queue id which is relative to a 353 * given VSI. 354 */ 355 queue_id -= vf->ch[i].num_qps; 356 } 357 } 358 359 return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id); 360 } 361 362 /** 363 * i40e_config_irq_link_list 364 * @vf: pointer to the VF info 365 * @vsi_id: id of VSI as given by the FW 366 * @vecmap: irq map info 367 * 368 * configure irq link list from the map 369 **/ i40e_config_irq_link_list(struct i40e_vf * vf,u16 vsi_id,struct virtchnl_vector_map * vecmap)370 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id, 371 struct virtchnl_vector_map *vecmap) 372 { 373 unsigned long linklistmap = 0, tempmap; 374 struct i40e_pf *pf = vf->pf; 375 struct i40e_hw *hw = &pf->hw; 376 u16 vsi_queue_id, pf_queue_id; 377 enum i40e_queue_type qtype; 378 u16 next_q, vector_id, size; 379 u32 reg, reg_idx; 380 u16 itr_idx = 0; 381 382 vector_id = vecmap->vector_id; 383 /* setup the head */ 384 if (0 == vector_id) 385 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id); 386 else 387 reg_idx = I40E_VPINT_LNKLSTN( 388 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) + 389 (vector_id - 1)); 390 391 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) { 392 /* Special case - No queues mapped on this vector */ 393 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK); 394 goto irq_list_done; 395 } 396 tempmap = vecmap->rxq_map; 397 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) { 398 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES * 399 vsi_queue_id)); 400 } 401 402 tempmap = vecmap->txq_map; 403 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) { 404 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES * 405 vsi_queue_id + 1)); 406 } 407 408 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES; 409 next_q = find_first_bit(&linklistmap, size); 410 if (unlikely(next_q == size)) 411 goto irq_list_done; 412 413 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES; 414 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES; 415 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id); 416 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id); 417 418 wr32(hw, reg_idx, reg); 419 420 while (next_q < size) { 421 switch (qtype) { 422 case I40E_QUEUE_TYPE_RX: 423 reg_idx = I40E_QINT_RQCTL(pf_queue_id); 424 itr_idx = vecmap->rxitr_idx; 425 break; 426 case I40E_QUEUE_TYPE_TX: 427 reg_idx = I40E_QINT_TQCTL(pf_queue_id); 428 itr_idx = vecmap->txitr_idx; 429 break; 430 default: 431 break; 432 } 433 434 next_q = find_next_bit(&linklistmap, size, next_q + 1); 435 if (next_q < size) { 436 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES; 437 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES; 438 pf_queue_id = i40e_get_real_pf_qid(vf, 439 vsi_id, 440 vsi_queue_id); 441 } else { 442 pf_queue_id = I40E_QUEUE_END_OF_LIST; 443 qtype = 0; 444 } 445 446 /* format for the RQCTL & TQCTL regs is same */ 447 reg = (vector_id) | 448 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) | 449 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) | 450 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) | 451 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT); 452 wr32(hw, reg_idx, reg); 453 } 454 455 /* if the vf is running in polling mode and using interrupt zero, 456 * need to disable auto-mask on enabling zero interrupt for VFs. 457 */ 458 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) && 459 (vector_id == 0)) { 460 reg = rd32(hw, I40E_GLINT_CTL); 461 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) { 462 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK; 463 wr32(hw, I40E_GLINT_CTL, reg); 464 } 465 } 466 467 irq_list_done: 468 i40e_flush(hw); 469 } 470 471 /** 472 * i40e_release_rdma_qvlist 473 * @vf: pointer to the VF. 474 * 475 **/ i40e_release_rdma_qvlist(struct i40e_vf * vf)476 static void i40e_release_rdma_qvlist(struct i40e_vf *vf) 477 { 478 struct i40e_pf *pf = vf->pf; 479 struct virtchnl_rdma_qvlist_info *qvlist_info = vf->qvlist_info; 480 u32 msix_vf; 481 u32 i; 482 483 if (!vf->qvlist_info) 484 return; 485 486 msix_vf = pf->hw.func_caps.num_msix_vectors_vf; 487 for (i = 0; i < qvlist_info->num_vectors; i++) { 488 struct virtchnl_rdma_qv_info *qv_info; 489 u32 next_q_index, next_q_type; 490 struct i40e_hw *hw = &pf->hw; 491 u32 v_idx, reg_idx, reg; 492 493 qv_info = &qvlist_info->qv_info[i]; 494 if (!qv_info) 495 continue; 496 v_idx = qv_info->v_idx; 497 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) { 498 /* Figure out the queue after CEQ and make that the 499 * first queue. 500 */ 501 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx; 502 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx)); 503 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK) 504 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT; 505 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK) 506 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT; 507 508 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1); 509 reg = (next_q_index & 510 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) | 511 (next_q_type << 512 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT); 513 514 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg); 515 } 516 } 517 kfree(vf->qvlist_info); 518 vf->qvlist_info = NULL; 519 } 520 521 /** 522 * i40e_config_rdma_qvlist 523 * @vf: pointer to the VF info 524 * @qvlist_info: queue and vector list 525 * 526 * Return 0 on success or < 0 on error 527 **/ 528 static int i40e_config_rdma_qvlist(struct i40e_vf * vf,struct virtchnl_rdma_qvlist_info * qvlist_info)529 i40e_config_rdma_qvlist(struct i40e_vf *vf, 530 struct virtchnl_rdma_qvlist_info *qvlist_info) 531 { 532 struct i40e_pf *pf = vf->pf; 533 struct i40e_hw *hw = &pf->hw; 534 struct virtchnl_rdma_qv_info *qv_info; 535 u32 v_idx, i, reg_idx, reg; 536 u32 next_q_idx, next_q_type; 537 size_t size; 538 u32 msix_vf; 539 int ret = 0; 540 541 msix_vf = pf->hw.func_caps.num_msix_vectors_vf; 542 543 if (qvlist_info->num_vectors > msix_vf) { 544 dev_warn(&pf->pdev->dev, 545 "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n", 546 qvlist_info->num_vectors, 547 msix_vf); 548 ret = -EINVAL; 549 goto err_out; 550 } 551 552 kfree(vf->qvlist_info); 553 size = virtchnl_struct_size(vf->qvlist_info, qv_info, 554 qvlist_info->num_vectors); 555 vf->qvlist_info = kzalloc(size, GFP_KERNEL); 556 if (!vf->qvlist_info) { 557 ret = -ENOMEM; 558 goto err_out; 559 } 560 vf->qvlist_info->num_vectors = qvlist_info->num_vectors; 561 562 msix_vf = pf->hw.func_caps.num_msix_vectors_vf; 563 for (i = 0; i < qvlist_info->num_vectors; i++) { 564 qv_info = &qvlist_info->qv_info[i]; 565 if (!qv_info) 566 continue; 567 568 /* Validate vector id belongs to this vf */ 569 if (!i40e_vc_isvalid_vector_id(vf, qv_info->v_idx)) { 570 ret = -EINVAL; 571 goto err_free; 572 } 573 574 v_idx = qv_info->v_idx; 575 576 vf->qvlist_info->qv_info[i] = *qv_info; 577 578 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1); 579 /* We might be sharing the interrupt, so get the first queue 580 * index and type, push it down the list by adding the new 581 * queue on top. Also link it with the new queue in CEQCTL. 582 */ 583 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx)); 584 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >> 585 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT); 586 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >> 587 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT); 588 589 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) { 590 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx; 591 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK | 592 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) | 593 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) | 594 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) | 595 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT)); 596 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg); 597 598 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1); 599 reg = (qv_info->ceq_idx & 600 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) | 601 (I40E_QUEUE_TYPE_PE_CEQ << 602 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT); 603 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg); 604 } 605 606 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) { 607 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK | 608 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) | 609 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT)); 610 611 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg); 612 } 613 } 614 615 return 0; 616 err_free: 617 kfree(vf->qvlist_info); 618 vf->qvlist_info = NULL; 619 err_out: 620 return ret; 621 } 622 623 /** 624 * i40e_config_vsi_tx_queue 625 * @vf: pointer to the VF info 626 * @vsi_id: id of VSI as provided by the FW 627 * @vsi_queue_id: vsi relative queue index 628 * @info: config. info 629 * 630 * configure tx queue 631 **/ i40e_config_vsi_tx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_txq_info * info)632 static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id, 633 u16 vsi_queue_id, 634 struct virtchnl_txq_info *info) 635 { 636 struct i40e_pf *pf = vf->pf; 637 struct i40e_hw *hw = &pf->hw; 638 struct i40e_hmc_obj_txq tx_ctx; 639 struct i40e_vsi *vsi; 640 u16 pf_queue_id; 641 u32 qtx_ctl; 642 int ret = 0; 643 644 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) { 645 ret = -ENOENT; 646 goto error_context; 647 } 648 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id); 649 vsi = i40e_find_vsi_from_id(pf, vsi_id); 650 if (!vsi) { 651 ret = -ENOENT; 652 goto error_context; 653 } 654 655 /* clear the context structure first */ 656 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq)); 657 658 /* only set the required fields */ 659 tx_ctx.base = info->dma_ring_addr / 128; 660 tx_ctx.qlen = info->ring_len; 661 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]); 662 tx_ctx.rdylist_act = 0; 663 tx_ctx.head_wb_ena = info->headwb_enabled; 664 tx_ctx.head_wb_addr = info->dma_headwb_addr; 665 666 /* clear the context in the HMC */ 667 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id); 668 if (ret) { 669 dev_err(&pf->pdev->dev, 670 "Failed to clear VF LAN Tx queue context %d, error: %d\n", 671 pf_queue_id, ret); 672 ret = -ENOENT; 673 goto error_context; 674 } 675 676 /* set the context in the HMC */ 677 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx); 678 if (ret) { 679 dev_err(&pf->pdev->dev, 680 "Failed to set VF LAN Tx queue context %d error: %d\n", 681 pf_queue_id, ret); 682 ret = -ENOENT; 683 goto error_context; 684 } 685 686 /* associate this queue with the PCI VF function */ 687 qtx_ctl = I40E_QTX_CTL_VF_QUEUE; 688 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) 689 & I40E_QTX_CTL_PF_INDX_MASK); 690 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id) 691 << I40E_QTX_CTL_VFVM_INDX_SHIFT) 692 & I40E_QTX_CTL_VFVM_INDX_MASK); 693 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl); 694 i40e_flush(hw); 695 696 error_context: 697 return ret; 698 } 699 700 /** 701 * i40e_config_vsi_rx_queue 702 * @vf: pointer to the VF info 703 * @vsi_id: id of VSI as provided by the FW 704 * @vsi_queue_id: vsi relative queue index 705 * @info: config. info 706 * 707 * configure rx queue 708 **/ i40e_config_vsi_rx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_rxq_info * info)709 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id, 710 u16 vsi_queue_id, 711 struct virtchnl_rxq_info *info) 712 { 713 u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id); 714 struct i40e_pf *pf = vf->pf; 715 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx]; 716 struct i40e_hw *hw = &pf->hw; 717 struct i40e_hmc_obj_rxq rx_ctx; 718 int ret = 0; 719 720 /* clear the context structure first */ 721 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq)); 722 723 /* only set the required fields */ 724 rx_ctx.base = info->dma_ring_addr / 128; 725 rx_ctx.qlen = info->ring_len; 726 727 if (info->splithdr_enabled) { 728 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 | 729 I40E_RX_SPLIT_IP | 730 I40E_RX_SPLIT_TCP_UDP | 731 I40E_RX_SPLIT_SCTP; 732 /* header length validation */ 733 if (info->hdr_size > ((2 * 1024) - 64)) { 734 ret = -EINVAL; 735 goto error_param; 736 } 737 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT; 738 739 /* set split mode 10b */ 740 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT; 741 } 742 743 /* databuffer length validation */ 744 if (info->databuffer_size > ((16 * 1024) - 128)) { 745 ret = -EINVAL; 746 goto error_param; 747 } 748 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT; 749 750 /* max pkt. length validation */ 751 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) { 752 ret = -EINVAL; 753 goto error_param; 754 } 755 rx_ctx.rxmax = info->max_pkt_size; 756 757 /* if port VLAN is configured increase the max packet size */ 758 if (vsi->info.pvid) 759 rx_ctx.rxmax += VLAN_HLEN; 760 761 /* enable 32bytes desc always */ 762 rx_ctx.dsize = 1; 763 764 /* default values */ 765 rx_ctx.lrxqthresh = 1; 766 rx_ctx.crcstrip = 1; 767 rx_ctx.prefena = 1; 768 rx_ctx.l2tsel = 1; 769 770 /* clear the context in the HMC */ 771 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id); 772 if (ret) { 773 dev_err(&pf->pdev->dev, 774 "Failed to clear VF LAN Rx queue context %d, error: %d\n", 775 pf_queue_id, ret); 776 ret = -ENOENT; 777 goto error_param; 778 } 779 780 /* set the context in the HMC */ 781 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx); 782 if (ret) { 783 dev_err(&pf->pdev->dev, 784 "Failed to set VF LAN Rx queue context %d error: %d\n", 785 pf_queue_id, ret); 786 ret = -ENOENT; 787 goto error_param; 788 } 789 790 error_param: 791 return ret; 792 } 793 794 /** 795 * i40e_alloc_vsi_res 796 * @vf: pointer to the VF info 797 * @idx: VSI index, applies only for ADq mode, zero otherwise 798 * 799 * alloc VF vsi context & resources 800 **/ i40e_alloc_vsi_res(struct i40e_vf * vf,u8 idx)801 static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx) 802 { 803 struct i40e_mac_filter *f = NULL; 804 struct i40e_pf *pf = vf->pf; 805 struct i40e_vsi *vsi; 806 u64 max_tx_rate = 0; 807 int ret = 0; 808 809 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, pf->vsi[pf->lan_vsi]->seid, 810 vf->vf_id); 811 812 if (!vsi) { 813 dev_err(&pf->pdev->dev, 814 "add vsi failed for VF %d, aq_err %d\n", 815 vf->vf_id, pf->hw.aq.asq_last_status); 816 ret = -ENOENT; 817 goto error_alloc_vsi_res; 818 } 819 820 if (!idx) { 821 u64 hena = i40e_pf_get_default_rss_hena(pf); 822 u8 broadcast[ETH_ALEN]; 823 824 vf->lan_vsi_idx = vsi->idx; 825 vf->lan_vsi_id = vsi->id; 826 /* If the port VLAN has been configured and then the 827 * VF driver was removed then the VSI port VLAN 828 * configuration was destroyed. Check if there is 829 * a port VLAN and restore the VSI configuration if 830 * needed. 831 */ 832 if (vf->port_vlan_id) 833 i40e_vsi_add_pvid(vsi, vf->port_vlan_id); 834 835 spin_lock_bh(&vsi->mac_filter_hash_lock); 836 if (is_valid_ether_addr(vf->default_lan_addr.addr)) { 837 f = i40e_add_mac_filter(vsi, 838 vf->default_lan_addr.addr); 839 if (!f) 840 dev_info(&pf->pdev->dev, 841 "Could not add MAC filter %pM for VF %d\n", 842 vf->default_lan_addr.addr, vf->vf_id); 843 } 844 eth_broadcast_addr(broadcast); 845 f = i40e_add_mac_filter(vsi, broadcast); 846 if (!f) 847 dev_info(&pf->pdev->dev, 848 "Could not allocate VF broadcast filter\n"); 849 spin_unlock_bh(&vsi->mac_filter_hash_lock); 850 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena); 851 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32)); 852 /* program mac filter only for VF VSI */ 853 ret = i40e_sync_vsi_filters(vsi); 854 if (ret) 855 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n"); 856 } 857 858 /* storing VSI index and id for ADq and don't apply the mac filter */ 859 if (vf->adq_enabled) { 860 vf->ch[idx].vsi_idx = vsi->idx; 861 vf->ch[idx].vsi_id = vsi->id; 862 } 863 864 /* Set VF bandwidth if specified */ 865 if (vf->tx_rate) { 866 max_tx_rate = vf->tx_rate; 867 } else if (vf->ch[idx].max_tx_rate) { 868 max_tx_rate = vf->ch[idx].max_tx_rate; 869 } 870 871 if (max_tx_rate) { 872 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR); 873 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid, 874 max_tx_rate, 0, NULL); 875 if (ret) 876 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n", 877 vf->vf_id, ret); 878 } 879 880 error_alloc_vsi_res: 881 return ret; 882 } 883 884 /** 885 * i40e_map_pf_queues_to_vsi 886 * @vf: pointer to the VF info 887 * 888 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This 889 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI. 890 **/ i40e_map_pf_queues_to_vsi(struct i40e_vf * vf)891 static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf) 892 { 893 struct i40e_pf *pf = vf->pf; 894 struct i40e_hw *hw = &pf->hw; 895 u32 reg, num_tc = 1; /* VF has at least one traffic class */ 896 u16 vsi_id, qps; 897 int i, j; 898 899 if (vf->adq_enabled) 900 num_tc = vf->num_tc; 901 902 for (i = 0; i < num_tc; i++) { 903 if (vf->adq_enabled) { 904 qps = vf->ch[i].num_qps; 905 vsi_id = vf->ch[i].vsi_id; 906 } else { 907 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; 908 vsi_id = vf->lan_vsi_id; 909 } 910 911 for (j = 0; j < 7; j++) { 912 if (j * 2 >= qps) { 913 /* end of list */ 914 reg = 0x07FF07FF; 915 } else { 916 u16 qid = i40e_vc_get_pf_queue_id(vf, 917 vsi_id, 918 j * 2); 919 reg = qid; 920 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, 921 (j * 2) + 1); 922 reg |= qid << 16; 923 } 924 i40e_write_rx_ctl(hw, 925 I40E_VSILAN_QTABLE(j, vsi_id), 926 reg); 927 } 928 } 929 } 930 931 /** 932 * i40e_map_pf_to_vf_queues 933 * @vf: pointer to the VF info 934 * 935 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This 936 * function takes care of the second part VPLAN_QTABLE & completes VF mappings. 937 **/ i40e_map_pf_to_vf_queues(struct i40e_vf * vf)938 static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf) 939 { 940 struct i40e_pf *pf = vf->pf; 941 struct i40e_hw *hw = &pf->hw; 942 u32 reg, total_qps = 0; 943 u32 qps, num_tc = 1; /* VF has at least one traffic class */ 944 u16 vsi_id, qid; 945 int i, j; 946 947 if (vf->adq_enabled) 948 num_tc = vf->num_tc; 949 950 for (i = 0; i < num_tc; i++) { 951 if (vf->adq_enabled) { 952 qps = vf->ch[i].num_qps; 953 vsi_id = vf->ch[i].vsi_id; 954 } else { 955 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; 956 vsi_id = vf->lan_vsi_id; 957 } 958 959 for (j = 0; j < qps; j++) { 960 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j); 961 962 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK); 963 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id), 964 reg); 965 total_qps++; 966 } 967 } 968 } 969 970 /** 971 * i40e_enable_vf_mappings 972 * @vf: pointer to the VF info 973 * 974 * enable VF mappings 975 **/ i40e_enable_vf_mappings(struct i40e_vf * vf)976 static void i40e_enable_vf_mappings(struct i40e_vf *vf) 977 { 978 struct i40e_pf *pf = vf->pf; 979 struct i40e_hw *hw = &pf->hw; 980 u32 reg; 981 982 /* Tell the hardware we're using noncontiguous mapping. HW requires 983 * that VF queues be mapped using this method, even when they are 984 * contiguous in real life 985 */ 986 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id), 987 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK); 988 989 /* enable VF vplan_qtable mappings */ 990 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK; 991 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg); 992 993 i40e_map_pf_to_vf_queues(vf); 994 i40e_map_pf_queues_to_vsi(vf); 995 996 i40e_flush(hw); 997 } 998 999 /** 1000 * i40e_disable_vf_mappings 1001 * @vf: pointer to the VF info 1002 * 1003 * disable VF mappings 1004 **/ i40e_disable_vf_mappings(struct i40e_vf * vf)1005 static void i40e_disable_vf_mappings(struct i40e_vf *vf) 1006 { 1007 struct i40e_pf *pf = vf->pf; 1008 struct i40e_hw *hw = &pf->hw; 1009 int i; 1010 1011 /* disable qp mappings */ 1012 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0); 1013 for (i = 0; i < I40E_MAX_VSI_QP; i++) 1014 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id), 1015 I40E_QUEUE_END_OF_LIST); 1016 i40e_flush(hw); 1017 } 1018 1019 /** 1020 * i40e_free_vf_res 1021 * @vf: pointer to the VF info 1022 * 1023 * free VF resources 1024 **/ i40e_free_vf_res(struct i40e_vf * vf)1025 static void i40e_free_vf_res(struct i40e_vf *vf) 1026 { 1027 struct i40e_pf *pf = vf->pf; 1028 struct i40e_hw *hw = &pf->hw; 1029 u32 reg_idx, reg; 1030 int i, j, msix_vf; 1031 1032 /* Start by disabling VF's configuration API to prevent the OS from 1033 * accessing the VF's VSI after it's freed / invalidated. 1034 */ 1035 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states); 1036 1037 /* It's possible the VF had requeuested more queues than the default so 1038 * do the accounting here when we're about to free them. 1039 */ 1040 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) { 1041 pf->queues_left += vf->num_queue_pairs - 1042 I40E_DEFAULT_QUEUES_PER_VF; 1043 } 1044 1045 /* free vsi & disconnect it from the parent uplink */ 1046 if (vf->lan_vsi_idx) { 1047 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]); 1048 vf->lan_vsi_idx = 0; 1049 vf->lan_vsi_id = 0; 1050 } 1051 1052 /* do the accounting and remove additional ADq VSI's */ 1053 if (vf->adq_enabled && vf->ch[0].vsi_idx) { 1054 for (j = 0; j < vf->num_tc; j++) { 1055 /* At this point VSI0 is already released so don't 1056 * release it again and only clear their values in 1057 * structure variables 1058 */ 1059 if (j) 1060 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]); 1061 vf->ch[j].vsi_idx = 0; 1062 vf->ch[j].vsi_id = 0; 1063 } 1064 } 1065 msix_vf = pf->hw.func_caps.num_msix_vectors_vf; 1066 1067 /* disable interrupts so the VF starts in a known state */ 1068 for (i = 0; i < msix_vf; i++) { 1069 /* format is same for both registers */ 1070 if (0 == i) 1071 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id); 1072 else 1073 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) * 1074 (vf->vf_id)) 1075 + (i - 1)); 1076 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK); 1077 i40e_flush(hw); 1078 } 1079 1080 /* clear the irq settings */ 1081 for (i = 0; i < msix_vf; i++) { 1082 /* format is same for both registers */ 1083 if (0 == i) 1084 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id); 1085 else 1086 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) * 1087 (vf->vf_id)) 1088 + (i - 1)); 1089 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK | 1090 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK); 1091 wr32(hw, reg_idx, reg); 1092 i40e_flush(hw); 1093 } 1094 /* reset some of the state variables keeping track of the resources */ 1095 vf->num_queue_pairs = 0; 1096 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states); 1097 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states); 1098 } 1099 1100 /** 1101 * i40e_alloc_vf_res 1102 * @vf: pointer to the VF info 1103 * 1104 * allocate VF resources 1105 **/ i40e_alloc_vf_res(struct i40e_vf * vf)1106 static int i40e_alloc_vf_res(struct i40e_vf *vf) 1107 { 1108 struct i40e_pf *pf = vf->pf; 1109 int total_queue_pairs = 0; 1110 int ret, idx; 1111 1112 if (vf->num_req_queues && 1113 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF) 1114 pf->num_vf_qps = vf->num_req_queues; 1115 else 1116 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF; 1117 1118 /* allocate hw vsi context & associated resources */ 1119 ret = i40e_alloc_vsi_res(vf, 0); 1120 if (ret) 1121 goto error_alloc; 1122 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; 1123 1124 /* allocate additional VSIs based on tc information for ADq */ 1125 if (vf->adq_enabled) { 1126 if (pf->queues_left >= 1127 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) { 1128 /* TC 0 always belongs to VF VSI */ 1129 for (idx = 1; idx < vf->num_tc; idx++) { 1130 ret = i40e_alloc_vsi_res(vf, idx); 1131 if (ret) 1132 goto error_alloc; 1133 } 1134 /* send correct number of queues */ 1135 total_queue_pairs = I40E_MAX_VF_QUEUES; 1136 } else { 1137 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n", 1138 vf->vf_id); 1139 vf->adq_enabled = false; 1140 } 1141 } 1142 1143 /* We account for each VF to get a default number of queue pairs. If 1144 * the VF has now requested more, we need to account for that to make 1145 * certain we never request more queues than we actually have left in 1146 * HW. 1147 */ 1148 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) 1149 pf->queues_left -= 1150 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF; 1151 1152 if (vf->trusted) 1153 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps); 1154 else 1155 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps); 1156 1157 /* store the total qps number for the runtime 1158 * VF req validation 1159 */ 1160 vf->num_queue_pairs = total_queue_pairs; 1161 1162 /* VF is now completely initialized */ 1163 set_bit(I40E_VF_STATE_INIT, &vf->vf_states); 1164 1165 error_alloc: 1166 if (ret) 1167 i40e_free_vf_res(vf); 1168 1169 return ret; 1170 } 1171 1172 #define VF_DEVICE_STATUS 0xAA 1173 #define VF_TRANS_PENDING_MASK 0x20 1174 /** 1175 * i40e_quiesce_vf_pci 1176 * @vf: pointer to the VF structure 1177 * 1178 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO 1179 * if the transactions never clear. 1180 **/ i40e_quiesce_vf_pci(struct i40e_vf * vf)1181 static int i40e_quiesce_vf_pci(struct i40e_vf *vf) 1182 { 1183 struct i40e_pf *pf = vf->pf; 1184 struct i40e_hw *hw = &pf->hw; 1185 int vf_abs_id, i; 1186 u32 reg; 1187 1188 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id; 1189 1190 wr32(hw, I40E_PF_PCI_CIAA, 1191 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT)); 1192 for (i = 0; i < 100; i++) { 1193 reg = rd32(hw, I40E_PF_PCI_CIAD); 1194 if ((reg & VF_TRANS_PENDING_MASK) == 0) 1195 return 0; 1196 udelay(1); 1197 } 1198 return -EIO; 1199 } 1200 1201 /** 1202 * __i40e_getnum_vf_vsi_vlan_filters 1203 * @vsi: pointer to the vsi 1204 * 1205 * called to get the number of VLANs offloaded on this VF 1206 **/ __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1207 static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi) 1208 { 1209 struct i40e_mac_filter *f; 1210 u16 num_vlans = 0, bkt; 1211 1212 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) { 1213 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID) 1214 num_vlans++; 1215 } 1216 1217 return num_vlans; 1218 } 1219 1220 /** 1221 * i40e_getnum_vf_vsi_vlan_filters 1222 * @vsi: pointer to the vsi 1223 * 1224 * wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held 1225 **/ i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1226 static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi) 1227 { 1228 int num_vlans; 1229 1230 spin_lock_bh(&vsi->mac_filter_hash_lock); 1231 num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi); 1232 spin_unlock_bh(&vsi->mac_filter_hash_lock); 1233 1234 return num_vlans; 1235 } 1236 1237 /** 1238 * i40e_get_vlan_list_sync 1239 * @vsi: pointer to the VSI 1240 * @num_vlans: number of VLANs in mac_filter_hash, returned to caller 1241 * @vlan_list: list of VLANs present in mac_filter_hash, returned to caller. 1242 * This array is allocated here, but has to be freed in caller. 1243 * 1244 * Called to get number of VLANs and VLAN list present in mac_filter_hash. 1245 **/ i40e_get_vlan_list_sync(struct i40e_vsi * vsi,u16 * num_vlans,s16 ** vlan_list)1246 static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans, 1247 s16 **vlan_list) 1248 { 1249 struct i40e_mac_filter *f; 1250 int i = 0; 1251 int bkt; 1252 1253 spin_lock_bh(&vsi->mac_filter_hash_lock); 1254 *num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi); 1255 *vlan_list = kcalloc(*num_vlans, sizeof(**vlan_list), GFP_ATOMIC); 1256 if (!(*vlan_list)) 1257 goto err; 1258 1259 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) { 1260 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID) 1261 continue; 1262 (*vlan_list)[i++] = f->vlan; 1263 } 1264 err: 1265 spin_unlock_bh(&vsi->mac_filter_hash_lock); 1266 } 1267 1268 /** 1269 * i40e_set_vsi_promisc 1270 * @vf: pointer to the VF struct 1271 * @seid: VSI number 1272 * @multi_enable: set MAC L2 layer multicast promiscuous enable/disable 1273 * for a given VLAN 1274 * @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable 1275 * for a given VLAN 1276 * @vl: List of VLANs - apply filter for given VLANs 1277 * @num_vlans: Number of elements in @vl 1278 **/ 1279 static int i40e_set_vsi_promisc(struct i40e_vf * vf,u16 seid,bool multi_enable,bool unicast_enable,s16 * vl,u16 num_vlans)1280 i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable, 1281 bool unicast_enable, s16 *vl, u16 num_vlans) 1282 { 1283 struct i40e_pf *pf = vf->pf; 1284 struct i40e_hw *hw = &pf->hw; 1285 int aq_ret, aq_tmp = 0; 1286 int i; 1287 1288 /* No VLAN to set promisc on, set on VSI */ 1289 if (!num_vlans || !vl) { 1290 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, seid, 1291 multi_enable, 1292 NULL); 1293 if (aq_ret) { 1294 int aq_err = pf->hw.aq.asq_last_status; 1295 1296 dev_err(&pf->pdev->dev, 1297 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n", 1298 vf->vf_id, 1299 ERR_PTR(aq_ret), 1300 i40e_aq_str(&pf->hw, aq_err)); 1301 1302 return aq_ret; 1303 } 1304 1305 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, seid, 1306 unicast_enable, 1307 NULL, true); 1308 1309 if (aq_ret) { 1310 int aq_err = pf->hw.aq.asq_last_status; 1311 1312 dev_err(&pf->pdev->dev, 1313 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n", 1314 vf->vf_id, 1315 ERR_PTR(aq_ret), 1316 i40e_aq_str(&pf->hw, aq_err)); 1317 } 1318 1319 return aq_ret; 1320 } 1321 1322 for (i = 0; i < num_vlans; i++) { 1323 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid, 1324 multi_enable, 1325 vl[i], NULL); 1326 if (aq_ret) { 1327 int aq_err = pf->hw.aq.asq_last_status; 1328 1329 dev_err(&pf->pdev->dev, 1330 "VF %d failed to set multicast promiscuous mode err %pe aq_err %s\n", 1331 vf->vf_id, 1332 ERR_PTR(aq_ret), 1333 i40e_aq_str(&pf->hw, aq_err)); 1334 1335 if (!aq_tmp) 1336 aq_tmp = aq_ret; 1337 } 1338 1339 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid, 1340 unicast_enable, 1341 vl[i], NULL); 1342 if (aq_ret) { 1343 int aq_err = pf->hw.aq.asq_last_status; 1344 1345 dev_err(&pf->pdev->dev, 1346 "VF %d failed to set unicast promiscuous mode err %pe aq_err %s\n", 1347 vf->vf_id, 1348 ERR_PTR(aq_ret), 1349 i40e_aq_str(&pf->hw, aq_err)); 1350 1351 if (!aq_tmp) 1352 aq_tmp = aq_ret; 1353 } 1354 } 1355 1356 if (aq_tmp) 1357 aq_ret = aq_tmp; 1358 1359 return aq_ret; 1360 } 1361 1362 /** 1363 * i40e_config_vf_promiscuous_mode 1364 * @vf: pointer to the VF info 1365 * @vsi_id: VSI id 1366 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable 1367 * @alluni: set MAC L2 layer unicast promiscuous enable/disable 1368 * 1369 * Called from the VF to configure the promiscuous mode of 1370 * VF vsis and from the VF reset path to reset promiscuous mode. 1371 **/ i40e_config_vf_promiscuous_mode(struct i40e_vf * vf,u16 vsi_id,bool allmulti,bool alluni)1372 static int i40e_config_vf_promiscuous_mode(struct i40e_vf *vf, 1373 u16 vsi_id, 1374 bool allmulti, 1375 bool alluni) 1376 { 1377 struct i40e_pf *pf = vf->pf; 1378 struct i40e_vsi *vsi; 1379 int aq_ret = 0; 1380 u16 num_vlans; 1381 s16 *vl; 1382 1383 vsi = i40e_find_vsi_from_id(pf, vsi_id); 1384 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi) 1385 return -EINVAL; 1386 1387 if (vf->port_vlan_id) { 1388 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, 1389 alluni, &vf->port_vlan_id, 1); 1390 return aq_ret; 1391 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) { 1392 i40e_get_vlan_list_sync(vsi, &num_vlans, &vl); 1393 1394 if (!vl) 1395 return -ENOMEM; 1396 1397 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni, 1398 vl, num_vlans); 1399 kfree(vl); 1400 return aq_ret; 1401 } 1402 1403 /* no VLANs to set on, set on VSI */ 1404 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni, 1405 NULL, 0); 1406 return aq_ret; 1407 } 1408 1409 /** 1410 * i40e_sync_vfr_reset 1411 * @hw: pointer to hw struct 1412 * @vf_id: VF identifier 1413 * 1414 * Before trigger hardware reset, we need to know if no other process has 1415 * reserved the hardware for any reset operations. This check is done by 1416 * examining the status of the RSTAT1 register used to signal the reset. 1417 **/ i40e_sync_vfr_reset(struct i40e_hw * hw,int vf_id)1418 static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id) 1419 { 1420 u32 reg; 1421 int i; 1422 1423 for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) { 1424 reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) & 1425 I40E_VFINT_ICR0_ADMINQ_MASK; 1426 if (reg) 1427 return 0; 1428 1429 usleep_range(100, 200); 1430 } 1431 1432 return -EAGAIN; 1433 } 1434 1435 /** 1436 * i40e_trigger_vf_reset 1437 * @vf: pointer to the VF structure 1438 * @flr: VFLR was issued or not 1439 * 1440 * Trigger hardware to start a reset for a particular VF. Expects the caller 1441 * to wait the proper amount of time to allow hardware to reset the VF before 1442 * it cleans up and restores VF functionality. 1443 **/ i40e_trigger_vf_reset(struct i40e_vf * vf,bool flr)1444 static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr) 1445 { 1446 struct i40e_pf *pf = vf->pf; 1447 struct i40e_hw *hw = &pf->hw; 1448 u32 reg, reg_idx, bit_idx; 1449 bool vf_active; 1450 u32 radq; 1451 1452 /* warn the VF */ 1453 vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states); 1454 1455 /* Disable VF's configuration API during reset. The flag is re-enabled 1456 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI. 1457 * It's normally disabled in i40e_free_vf_res(), but it's safer 1458 * to do it earlier to give some time to finish to any VF config 1459 * functions that may still be running at this point. 1460 */ 1461 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states); 1462 1463 /* In the case of a VFLR, the HW has already reset the VF and we 1464 * just need to clean up, so don't hit the VFRTRIG register. 1465 */ 1466 if (!flr) { 1467 /* Sync VFR reset before trigger next one */ 1468 radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) & 1469 I40E_VFINT_ICR0_ADMINQ_MASK; 1470 if (vf_active && !radq) 1471 /* waiting for finish reset by virtual driver */ 1472 if (i40e_sync_vfr_reset(hw, vf->vf_id)) 1473 dev_info(&pf->pdev->dev, 1474 "Reset VF %d never finished\n", 1475 vf->vf_id); 1476 1477 /* Reset VF using VPGEN_VFRTRIG reg. It is also setting 1478 * in progress state in rstat1 register. 1479 */ 1480 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id)); 1481 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK; 1482 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg); 1483 i40e_flush(hw); 1484 } 1485 /* clear the VFLR bit in GLGEN_VFLRSTAT */ 1486 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32; 1487 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32; 1488 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx)); 1489 i40e_flush(hw); 1490 1491 if (i40e_quiesce_vf_pci(vf)) 1492 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n", 1493 vf->vf_id); 1494 } 1495 1496 /** 1497 * i40e_cleanup_reset_vf 1498 * @vf: pointer to the VF structure 1499 * 1500 * Cleanup a VF after the hardware reset is finished. Expects the caller to 1501 * have verified whether the reset is finished properly, and ensure the 1502 * minimum amount of wait time has passed. 1503 **/ i40e_cleanup_reset_vf(struct i40e_vf * vf)1504 static void i40e_cleanup_reset_vf(struct i40e_vf *vf) 1505 { 1506 struct i40e_pf *pf = vf->pf; 1507 struct i40e_hw *hw = &pf->hw; 1508 u32 reg; 1509 1510 /* disable promisc modes in case they were enabled */ 1511 i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false); 1512 1513 /* free VF resources to begin resetting the VSI state */ 1514 i40e_free_vf_res(vf); 1515 1516 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg. 1517 * By doing this we allow HW to access VF memory at any point. If we 1518 * did it any sooner, HW could access memory while it was being freed 1519 * in i40e_free_vf_res(), causing an IOMMU fault. 1520 * 1521 * On the other hand, this needs to be done ASAP, because the VF driver 1522 * is waiting for this to happen and may report a timeout. It's 1523 * harmless, but it gets logged into Guest OS kernel log, so best avoid 1524 * it. 1525 */ 1526 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id)); 1527 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK; 1528 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg); 1529 1530 /* reallocate VF resources to finish resetting the VSI state */ 1531 if (!i40e_alloc_vf_res(vf)) { 1532 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id; 1533 i40e_enable_vf_mappings(vf); 1534 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states); 1535 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states); 1536 /* Do not notify the client during VF init */ 1537 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE, 1538 &vf->vf_states)) 1539 i40e_notify_client_of_vf_reset(pf, abs_vf_id); 1540 vf->num_vlan = 0; 1541 } 1542 1543 /* Tell the VF driver the reset is done. This needs to be done only 1544 * after VF has been fully initialized, because the VF driver may 1545 * request resources immediately after setting this flag. 1546 */ 1547 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE); 1548 } 1549 1550 /** 1551 * i40e_reset_vf 1552 * @vf: pointer to the VF structure 1553 * @flr: VFLR was issued or not 1554 * 1555 * Returns true if the VF is in reset, resets successfully, or resets 1556 * are disabled and false otherwise. 1557 **/ i40e_reset_vf(struct i40e_vf * vf,bool flr)1558 bool i40e_reset_vf(struct i40e_vf *vf, bool flr) 1559 { 1560 struct i40e_pf *pf = vf->pf; 1561 struct i40e_hw *hw = &pf->hw; 1562 bool rsd = false; 1563 u32 reg; 1564 int i; 1565 1566 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state)) 1567 return true; 1568 1569 /* Bail out if VFs are disabled. */ 1570 if (test_bit(__I40E_VF_DISABLE, pf->state)) 1571 return true; 1572 1573 /* If VF is being reset already we don't need to continue. */ 1574 if (test_and_set_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) 1575 return true; 1576 1577 i40e_trigger_vf_reset(vf, flr); 1578 1579 /* poll VPGEN_VFRSTAT reg to make sure 1580 * that reset is complete 1581 */ 1582 for (i = 0; i < 10; i++) { 1583 /* VF reset requires driver to first reset the VF and then 1584 * poll the status register to make sure that the reset 1585 * completed successfully. Due to internal HW FIFO flushes, 1586 * we must wait 10ms before the register will be valid. 1587 */ 1588 usleep_range(10000, 20000); 1589 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id)); 1590 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) { 1591 rsd = true; 1592 break; 1593 } 1594 } 1595 1596 if (flr) 1597 usleep_range(10000, 20000); 1598 1599 if (!rsd) 1600 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n", 1601 vf->vf_id); 1602 usleep_range(10000, 20000); 1603 1604 /* On initial reset, we don't have any queues to disable */ 1605 if (vf->lan_vsi_idx != 0) 1606 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]); 1607 1608 i40e_cleanup_reset_vf(vf); 1609 1610 i40e_flush(hw); 1611 usleep_range(20000, 40000); 1612 clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states); 1613 1614 return true; 1615 } 1616 1617 /** 1618 * i40e_reset_all_vfs 1619 * @pf: pointer to the PF structure 1620 * @flr: VFLR was issued or not 1621 * 1622 * Reset all allocated VFs in one go. First, tell the hardware to reset each 1623 * VF, then do all the waiting in one chunk, and finally finish restoring each 1624 * VF after the wait. This is useful during PF routines which need to reset 1625 * all VFs, as otherwise it must perform these resets in a serialized fashion. 1626 * 1627 * Returns true if any VFs were reset, and false otherwise. 1628 **/ i40e_reset_all_vfs(struct i40e_pf * pf,bool flr)1629 bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr) 1630 { 1631 struct i40e_hw *hw = &pf->hw; 1632 struct i40e_vf *vf; 1633 u32 reg; 1634 int i; 1635 1636 /* If we don't have any VFs, then there is nothing to reset */ 1637 if (!pf->num_alloc_vfs) 1638 return false; 1639 1640 /* If VFs have been disabled, there is no need to reset */ 1641 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state)) 1642 return false; 1643 1644 /* Begin reset on all VFs at once */ 1645 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) { 1646 /* If VF is being reset no need to trigger reset again */ 1647 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) 1648 i40e_trigger_vf_reset(vf, flr); 1649 } 1650 1651 /* HW requires some time to make sure it can flush the FIFO for a VF 1652 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in 1653 * sequence to make sure that it has completed. We'll keep track of 1654 * the VFs using a simple iterator that increments once that VF has 1655 * finished resetting. 1656 */ 1657 for (i = 0, vf = &pf->vf[0]; i < 10 && vf < &pf->vf[pf->num_alloc_vfs]; ++i) { 1658 usleep_range(10000, 20000); 1659 1660 /* Check each VF in sequence, beginning with the VF to fail 1661 * the previous check. 1662 */ 1663 while (vf < &pf->vf[pf->num_alloc_vfs]) { 1664 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) { 1665 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id)); 1666 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK)) 1667 break; 1668 } 1669 1670 /* If the current VF has finished resetting, move on 1671 * to the next VF in sequence. 1672 */ 1673 ++vf; 1674 } 1675 } 1676 1677 if (flr) 1678 usleep_range(10000, 20000); 1679 1680 /* Display a warning if at least one VF didn't manage to reset in 1681 * time, but continue on with the operation. 1682 */ 1683 if (vf < &pf->vf[pf->num_alloc_vfs]) 1684 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n", 1685 vf->vf_id); 1686 usleep_range(10000, 20000); 1687 1688 /* Begin disabling all the rings associated with VFs, but do not wait 1689 * between each VF. 1690 */ 1691 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) { 1692 /* On initial reset, we don't have any queues to disable */ 1693 if (vf->lan_vsi_idx == 0) 1694 continue; 1695 1696 /* If VF is reset in another thread just continue */ 1697 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) 1698 continue; 1699 1700 i40e_vsi_stop_rings_no_wait(pf->vsi[vf->lan_vsi_idx]); 1701 } 1702 1703 /* Now that we've notified HW to disable all of the VF rings, wait 1704 * until they finish. 1705 */ 1706 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) { 1707 /* On initial reset, we don't have any queues to disable */ 1708 if (vf->lan_vsi_idx == 0) 1709 continue; 1710 1711 /* If VF is reset in another thread just continue */ 1712 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) 1713 continue; 1714 1715 i40e_vsi_wait_queues_disabled(pf->vsi[vf->lan_vsi_idx]); 1716 } 1717 1718 /* Hw may need up to 50ms to finish disabling the RX queues. We 1719 * minimize the wait by delaying only once for all VFs. 1720 */ 1721 mdelay(50); 1722 1723 /* Finish the reset on each VF */ 1724 for (vf = &pf->vf[0]; vf < &pf->vf[pf->num_alloc_vfs]; ++vf) { 1725 /* If VF is reset in another thread just continue */ 1726 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) 1727 continue; 1728 1729 i40e_cleanup_reset_vf(vf); 1730 } 1731 1732 i40e_flush(hw); 1733 usleep_range(20000, 40000); 1734 clear_bit(__I40E_VF_DISABLE, pf->state); 1735 1736 return true; 1737 } 1738 1739 /** 1740 * i40e_free_vfs 1741 * @pf: pointer to the PF structure 1742 * 1743 * free VF resources 1744 **/ i40e_free_vfs(struct i40e_pf * pf)1745 void i40e_free_vfs(struct i40e_pf *pf) 1746 { 1747 struct i40e_hw *hw = &pf->hw; 1748 u32 reg_idx, bit_idx; 1749 int i, tmp, vf_id; 1750 1751 if (!pf->vf) 1752 return; 1753 1754 set_bit(__I40E_VFS_RELEASING, pf->state); 1755 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state)) 1756 usleep_range(1000, 2000); 1757 1758 i40e_notify_client_of_vf_enable(pf, 0); 1759 1760 /* Disable IOV before freeing resources. This lets any VF drivers 1761 * running in the host get themselves cleaned up before we yank 1762 * the carpet out from underneath their feet. 1763 */ 1764 if (!pci_vfs_assigned(pf->pdev)) 1765 pci_disable_sriov(pf->pdev); 1766 else 1767 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n"); 1768 1769 /* Amortize wait time by stopping all VFs at the same time */ 1770 for (i = 0; i < pf->num_alloc_vfs; i++) { 1771 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states)) 1772 continue; 1773 1774 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]); 1775 } 1776 1777 for (i = 0; i < pf->num_alloc_vfs; i++) { 1778 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states)) 1779 continue; 1780 1781 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]); 1782 } 1783 1784 /* free up VF resources */ 1785 tmp = pf->num_alloc_vfs; 1786 pf->num_alloc_vfs = 0; 1787 for (i = 0; i < tmp; i++) { 1788 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states)) 1789 i40e_free_vf_res(&pf->vf[i]); 1790 /* disable qp mappings */ 1791 i40e_disable_vf_mappings(&pf->vf[i]); 1792 } 1793 1794 kfree(pf->vf); 1795 pf->vf = NULL; 1796 1797 /* This check is for when the driver is unloaded while VFs are 1798 * assigned. Setting the number of VFs to 0 through sysfs is caught 1799 * before this function ever gets called. 1800 */ 1801 if (!pci_vfs_assigned(pf->pdev)) { 1802 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to 1803 * work correctly when SR-IOV gets re-enabled. 1804 */ 1805 for (vf_id = 0; vf_id < tmp; vf_id++) { 1806 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32; 1807 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32; 1808 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx)); 1809 } 1810 } 1811 clear_bit(__I40E_VF_DISABLE, pf->state); 1812 clear_bit(__I40E_VFS_RELEASING, pf->state); 1813 } 1814 1815 #ifdef CONFIG_PCI_IOV 1816 /** 1817 * i40e_alloc_vfs 1818 * @pf: pointer to the PF structure 1819 * @num_alloc_vfs: number of VFs to allocate 1820 * 1821 * allocate VF resources 1822 **/ i40e_alloc_vfs(struct i40e_pf * pf,u16 num_alloc_vfs)1823 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs) 1824 { 1825 struct i40e_vf *vfs; 1826 int i, ret = 0; 1827 1828 /* Disable interrupt 0 so we don't try to handle the VFLR. */ 1829 i40e_irq_dynamic_disable_icr0(pf); 1830 1831 /* Check to see if we're just allocating resources for extant VFs */ 1832 if (pci_num_vf(pf->pdev) != num_alloc_vfs) { 1833 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs); 1834 if (ret) { 1835 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED; 1836 pf->num_alloc_vfs = 0; 1837 goto err_iov; 1838 } 1839 } 1840 /* allocate memory */ 1841 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL); 1842 if (!vfs) { 1843 ret = -ENOMEM; 1844 goto err_alloc; 1845 } 1846 pf->vf = vfs; 1847 1848 /* apply default profile */ 1849 for (i = 0; i < num_alloc_vfs; i++) { 1850 vfs[i].pf = pf; 1851 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB; 1852 vfs[i].vf_id = i; 1853 1854 /* assign default capabilities */ 1855 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps); 1856 vfs[i].spoofchk = true; 1857 1858 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states); 1859 1860 } 1861 pf->num_alloc_vfs = num_alloc_vfs; 1862 1863 /* VF resources get allocated during reset */ 1864 i40e_reset_all_vfs(pf, false); 1865 1866 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs); 1867 1868 err_alloc: 1869 if (ret) 1870 i40e_free_vfs(pf); 1871 err_iov: 1872 /* Re-enable interrupt 0. */ 1873 i40e_irq_dynamic_enable_icr0(pf); 1874 return ret; 1875 } 1876 1877 #endif 1878 /** 1879 * i40e_pci_sriov_enable 1880 * @pdev: pointer to a pci_dev structure 1881 * @num_vfs: number of VFs to allocate 1882 * 1883 * Enable or change the number of VFs 1884 **/ i40e_pci_sriov_enable(struct pci_dev * pdev,int num_vfs)1885 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs) 1886 { 1887 #ifdef CONFIG_PCI_IOV 1888 struct i40e_pf *pf = pci_get_drvdata(pdev); 1889 int pre_existing_vfs = pci_num_vf(pdev); 1890 int err = 0; 1891 1892 if (test_bit(__I40E_TESTING, pf->state)) { 1893 dev_warn(&pdev->dev, 1894 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n"); 1895 err = -EPERM; 1896 goto err_out; 1897 } 1898 1899 if (pre_existing_vfs && pre_existing_vfs != num_vfs) 1900 i40e_free_vfs(pf); 1901 else if (pre_existing_vfs && pre_existing_vfs == num_vfs) 1902 goto out; 1903 1904 if (num_vfs > pf->num_req_vfs) { 1905 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n", 1906 num_vfs, pf->num_req_vfs); 1907 err = -EPERM; 1908 goto err_out; 1909 } 1910 1911 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs); 1912 err = i40e_alloc_vfs(pf, num_vfs); 1913 if (err) { 1914 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err); 1915 goto err_out; 1916 } 1917 1918 out: 1919 return num_vfs; 1920 1921 err_out: 1922 return err; 1923 #endif 1924 return 0; 1925 } 1926 1927 /** 1928 * i40e_pci_sriov_configure 1929 * @pdev: pointer to a pci_dev structure 1930 * @num_vfs: number of VFs to allocate 1931 * 1932 * Enable or change the number of VFs. Called when the user updates the number 1933 * of VFs in sysfs. 1934 **/ i40e_pci_sriov_configure(struct pci_dev * pdev,int num_vfs)1935 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs) 1936 { 1937 struct i40e_pf *pf = pci_get_drvdata(pdev); 1938 int ret = 0; 1939 1940 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 1941 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 1942 return -EAGAIN; 1943 } 1944 1945 if (num_vfs) { 1946 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) { 1947 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED; 1948 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG); 1949 } 1950 ret = i40e_pci_sriov_enable(pdev, num_vfs); 1951 goto sriov_configure_out; 1952 } 1953 1954 if (!pci_vfs_assigned(pf->pdev)) { 1955 i40e_free_vfs(pf); 1956 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED; 1957 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG); 1958 } else { 1959 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n"); 1960 ret = -EINVAL; 1961 goto sriov_configure_out; 1962 } 1963 sriov_configure_out: 1964 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 1965 return ret; 1966 } 1967 1968 /***********************virtual channel routines******************/ 1969 1970 /** 1971 * i40e_vc_send_msg_to_vf 1972 * @vf: pointer to the VF info 1973 * @v_opcode: virtual channel opcode 1974 * @v_retval: virtual channel return value 1975 * @msg: pointer to the msg buffer 1976 * @msglen: msg length 1977 * 1978 * send msg to VF 1979 **/ i40e_vc_send_msg_to_vf(struct i40e_vf * vf,u32 v_opcode,u32 v_retval,u8 * msg,u16 msglen)1980 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode, 1981 u32 v_retval, u8 *msg, u16 msglen) 1982 { 1983 struct i40e_pf *pf; 1984 struct i40e_hw *hw; 1985 int abs_vf_id; 1986 int aq_ret; 1987 1988 /* validate the request */ 1989 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs) 1990 return -EINVAL; 1991 1992 pf = vf->pf; 1993 hw = &pf->hw; 1994 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id; 1995 1996 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval, 1997 msg, msglen, NULL); 1998 if (aq_ret) { 1999 dev_info(&pf->pdev->dev, 2000 "Unable to send the message to VF %d aq_err %d\n", 2001 vf->vf_id, pf->hw.aq.asq_last_status); 2002 return -EIO; 2003 } 2004 2005 return 0; 2006 } 2007 2008 /** 2009 * i40e_vc_send_resp_to_vf 2010 * @vf: pointer to the VF info 2011 * @opcode: operation code 2012 * @retval: return value 2013 * 2014 * send resp msg to VF 2015 **/ i40e_vc_send_resp_to_vf(struct i40e_vf * vf,enum virtchnl_ops opcode,int retval)2016 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf, 2017 enum virtchnl_ops opcode, 2018 int retval) 2019 { 2020 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0); 2021 } 2022 2023 /** 2024 * i40e_sync_vf_state 2025 * @vf: pointer to the VF info 2026 * @state: VF state 2027 * 2028 * Called from a VF message to synchronize the service with a potential 2029 * VF reset state 2030 **/ i40e_sync_vf_state(struct i40e_vf * vf,enum i40e_vf_states state)2031 static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state) 2032 { 2033 int i; 2034 2035 /* When handling some messages, it needs VF state to be set. 2036 * It is possible that this flag is cleared during VF reset, 2037 * so there is a need to wait until the end of the reset to 2038 * handle the request message correctly. 2039 */ 2040 for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) { 2041 if (test_bit(state, &vf->vf_states)) 2042 return true; 2043 usleep_range(10000, 20000); 2044 } 2045 2046 return test_bit(state, &vf->vf_states); 2047 } 2048 2049 /** 2050 * i40e_vc_get_version_msg 2051 * @vf: pointer to the VF info 2052 * @msg: pointer to the msg buffer 2053 * 2054 * called from the VF to request the API version used by the PF 2055 **/ i40e_vc_get_version_msg(struct i40e_vf * vf,u8 * msg)2056 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg) 2057 { 2058 struct virtchnl_version_info info = { 2059 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR 2060 }; 2061 2062 vf->vf_ver = *(struct virtchnl_version_info *)msg; 2063 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */ 2064 if (VF_IS_V10(&vf->vf_ver)) 2065 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS; 2066 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION, 2067 0, (u8 *)&info, 2068 sizeof(struct virtchnl_version_info)); 2069 } 2070 2071 /** 2072 * i40e_del_qch - delete all the additional VSIs created as a part of ADq 2073 * @vf: pointer to VF structure 2074 **/ i40e_del_qch(struct i40e_vf * vf)2075 static void i40e_del_qch(struct i40e_vf *vf) 2076 { 2077 struct i40e_pf *pf = vf->pf; 2078 int i; 2079 2080 /* first element in the array belongs to primary VF VSI and we shouldn't 2081 * delete it. We should however delete the rest of the VSIs created 2082 */ 2083 for (i = 1; i < vf->num_tc; i++) { 2084 if (vf->ch[i].vsi_idx) { 2085 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]); 2086 vf->ch[i].vsi_idx = 0; 2087 vf->ch[i].vsi_id = 0; 2088 } 2089 } 2090 } 2091 2092 /** 2093 * i40e_vc_get_max_frame_size 2094 * @vf: pointer to the VF 2095 * 2096 * Max frame size is determined based on the current port's max frame size and 2097 * whether a port VLAN is configured on this VF. The VF is not aware whether 2098 * it's in a port VLAN so the PF needs to account for this in max frame size 2099 * checks and sending the max frame size to the VF. 2100 **/ i40e_vc_get_max_frame_size(struct i40e_vf * vf)2101 static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf) 2102 { 2103 u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size; 2104 2105 if (vf->port_vlan_id) 2106 max_frame_size -= VLAN_HLEN; 2107 2108 return max_frame_size; 2109 } 2110 2111 /** 2112 * i40e_vc_get_vf_resources_msg 2113 * @vf: pointer to the VF info 2114 * @msg: pointer to the msg buffer 2115 * 2116 * called from the VF to request its resources 2117 **/ i40e_vc_get_vf_resources_msg(struct i40e_vf * vf,u8 * msg)2118 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg) 2119 { 2120 struct virtchnl_vf_resource *vfres = NULL; 2121 struct i40e_pf *pf = vf->pf; 2122 struct i40e_vsi *vsi; 2123 int num_vsis = 1; 2124 int aq_ret = 0; 2125 size_t len = 0; 2126 int ret; 2127 2128 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) { 2129 aq_ret = -EINVAL; 2130 goto err; 2131 } 2132 2133 len = virtchnl_struct_size(vfres, vsi_res, num_vsis); 2134 vfres = kzalloc(len, GFP_KERNEL); 2135 if (!vfres) { 2136 aq_ret = -ENOMEM; 2137 len = 0; 2138 goto err; 2139 } 2140 if (VF_IS_V11(&vf->vf_ver)) 2141 vf->driver_caps = *(u32 *)msg; 2142 else 2143 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 | 2144 VIRTCHNL_VF_OFFLOAD_RSS_REG | 2145 VIRTCHNL_VF_OFFLOAD_VLAN; 2146 2147 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2; 2148 vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED; 2149 vsi = pf->vsi[vf->lan_vsi_idx]; 2150 if (!vsi->info.pvid) 2151 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN; 2152 2153 if (i40e_vf_client_capable(pf, vf->vf_id) && 2154 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RDMA)) { 2155 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RDMA; 2156 set_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states); 2157 } else { 2158 clear_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states); 2159 } 2160 2161 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) { 2162 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF; 2163 } else { 2164 if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) && 2165 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ)) 2166 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ; 2167 else 2168 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG; 2169 } 2170 2171 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) { 2172 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2) 2173 vfres->vf_cap_flags |= 2174 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2; 2175 } 2176 2177 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP) 2178 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP; 2179 2180 if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) && 2181 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM)) 2182 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM; 2183 2184 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) { 2185 if (pf->flags & I40E_FLAG_MFP_ENABLED) { 2186 dev_err(&pf->pdev->dev, 2187 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n", 2188 vf->vf_id); 2189 aq_ret = -EINVAL; 2190 goto err; 2191 } 2192 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING; 2193 } 2194 2195 if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) { 2196 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) 2197 vfres->vf_cap_flags |= 2198 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR; 2199 } 2200 2201 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES) 2202 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES; 2203 2204 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ) 2205 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ; 2206 2207 vfres->num_vsis = num_vsis; 2208 vfres->num_queue_pairs = vf->num_queue_pairs; 2209 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf; 2210 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE; 2211 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE; 2212 vfres->max_mtu = i40e_vc_get_max_frame_size(vf); 2213 2214 if (vf->lan_vsi_idx) { 2215 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id; 2216 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV; 2217 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs; 2218 /* VFs only use TC 0 */ 2219 vfres->vsi_res[0].qset_handle 2220 = le16_to_cpu(vsi->info.qs_handle[0]); 2221 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_USO) && !vf->pf_set_mac) { 2222 spin_lock_bh(&vsi->mac_filter_hash_lock); 2223 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr); 2224 eth_zero_addr(vf->default_lan_addr.addr); 2225 spin_unlock_bh(&vsi->mac_filter_hash_lock); 2226 } 2227 ether_addr_copy(vfres->vsi_res[0].default_mac_addr, 2228 vf->default_lan_addr.addr); 2229 } 2230 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states); 2231 2232 err: 2233 /* send the response back to the VF */ 2234 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES, 2235 aq_ret, (u8 *)vfres, len); 2236 2237 kfree(vfres); 2238 return ret; 2239 } 2240 2241 /** 2242 * i40e_vc_config_promiscuous_mode_msg 2243 * @vf: pointer to the VF info 2244 * @msg: pointer to the msg buffer 2245 * 2246 * called from the VF to configure the promiscuous mode of 2247 * VF vsis 2248 **/ i40e_vc_config_promiscuous_mode_msg(struct i40e_vf * vf,u8 * msg)2249 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg) 2250 { 2251 struct virtchnl_promisc_info *info = 2252 (struct virtchnl_promisc_info *)msg; 2253 struct i40e_pf *pf = vf->pf; 2254 bool allmulti = false; 2255 bool alluni = false; 2256 int aq_ret = 0; 2257 2258 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 2259 aq_ret = -EINVAL; 2260 goto err_out; 2261 } 2262 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) { 2263 dev_err(&pf->pdev->dev, 2264 "Unprivileged VF %d is attempting to configure promiscuous mode\n", 2265 vf->vf_id); 2266 2267 /* Lie to the VF on purpose, because this is an error we can 2268 * ignore. Unprivileged VF is not a virtual channel error. 2269 */ 2270 aq_ret = 0; 2271 goto err_out; 2272 } 2273 2274 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) { 2275 aq_ret = -EINVAL; 2276 goto err_out; 2277 } 2278 2279 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) { 2280 aq_ret = -EINVAL; 2281 goto err_out; 2282 } 2283 2284 /* Multicast promiscuous handling*/ 2285 if (info->flags & FLAG_VF_MULTICAST_PROMISC) 2286 allmulti = true; 2287 2288 if (info->flags & FLAG_VF_UNICAST_PROMISC) 2289 alluni = true; 2290 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti, 2291 alluni); 2292 if (aq_ret) 2293 goto err_out; 2294 2295 if (allmulti) { 2296 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC, 2297 &vf->vf_states)) 2298 dev_info(&pf->pdev->dev, 2299 "VF %d successfully set multicast promiscuous mode\n", 2300 vf->vf_id); 2301 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC, 2302 &vf->vf_states)) 2303 dev_info(&pf->pdev->dev, 2304 "VF %d successfully unset multicast promiscuous mode\n", 2305 vf->vf_id); 2306 2307 if (alluni) { 2308 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC, 2309 &vf->vf_states)) 2310 dev_info(&pf->pdev->dev, 2311 "VF %d successfully set unicast promiscuous mode\n", 2312 vf->vf_id); 2313 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC, 2314 &vf->vf_states)) 2315 dev_info(&pf->pdev->dev, 2316 "VF %d successfully unset unicast promiscuous mode\n", 2317 vf->vf_id); 2318 2319 err_out: 2320 /* send the response to the VF */ 2321 return i40e_vc_send_resp_to_vf(vf, 2322 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE, 2323 aq_ret); 2324 } 2325 2326 /** 2327 * i40e_vc_config_queues_msg 2328 * @vf: pointer to the VF info 2329 * @msg: pointer to the msg buffer 2330 * 2331 * called from the VF to configure the rx/tx 2332 * queues 2333 **/ i40e_vc_config_queues_msg(struct i40e_vf * vf,u8 * msg)2334 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg) 2335 { 2336 struct virtchnl_vsi_queue_config_info *qci = 2337 (struct virtchnl_vsi_queue_config_info *)msg; 2338 struct virtchnl_queue_pair_info *qpi; 2339 u16 vsi_id, vsi_queue_id = 0; 2340 struct i40e_pf *pf = vf->pf; 2341 int i, j = 0, idx = 0; 2342 struct i40e_vsi *vsi; 2343 u16 num_qps_all = 0; 2344 int aq_ret = 0; 2345 2346 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 2347 aq_ret = -EINVAL; 2348 goto error_param; 2349 } 2350 2351 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) { 2352 aq_ret = -EINVAL; 2353 goto error_param; 2354 } 2355 2356 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) { 2357 aq_ret = -EINVAL; 2358 goto error_param; 2359 } 2360 2361 if (vf->adq_enabled) { 2362 for (i = 0; i < vf->num_tc; i++) 2363 num_qps_all += vf->ch[i].num_qps; 2364 if (num_qps_all != qci->num_queue_pairs) { 2365 aq_ret = -EINVAL; 2366 goto error_param; 2367 } 2368 } 2369 2370 vsi_id = qci->vsi_id; 2371 2372 for (i = 0; i < qci->num_queue_pairs; i++) { 2373 qpi = &qci->qpair[i]; 2374 2375 if (!vf->adq_enabled) { 2376 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, 2377 qpi->txq.queue_id)) { 2378 aq_ret = -EINVAL; 2379 goto error_param; 2380 } 2381 2382 vsi_queue_id = qpi->txq.queue_id; 2383 2384 if (qpi->txq.vsi_id != qci->vsi_id || 2385 qpi->rxq.vsi_id != qci->vsi_id || 2386 qpi->rxq.queue_id != vsi_queue_id) { 2387 aq_ret = -EINVAL; 2388 goto error_param; 2389 } 2390 } 2391 2392 if (vf->adq_enabled) { 2393 if (idx >= ARRAY_SIZE(vf->ch)) { 2394 aq_ret = -ENODEV; 2395 goto error_param; 2396 } 2397 vsi_id = vf->ch[idx].vsi_id; 2398 } 2399 2400 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id, 2401 &qpi->rxq) || 2402 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id, 2403 &qpi->txq)) { 2404 aq_ret = -EINVAL; 2405 goto error_param; 2406 } 2407 2408 /* For ADq there can be up to 4 VSIs with max 4 queues each. 2409 * VF does not know about these additional VSIs and all 2410 * it cares is about its own queues. PF configures these queues 2411 * to its appropriate VSIs based on TC mapping 2412 */ 2413 if (vf->adq_enabled) { 2414 if (idx >= ARRAY_SIZE(vf->ch)) { 2415 aq_ret = -ENODEV; 2416 goto error_param; 2417 } 2418 if (j == (vf->ch[idx].num_qps - 1)) { 2419 idx++; 2420 j = 0; /* resetting the queue count */ 2421 vsi_queue_id = 0; 2422 } else { 2423 j++; 2424 vsi_queue_id++; 2425 } 2426 } 2427 } 2428 /* set vsi num_queue_pairs in use to num configured by VF */ 2429 if (!vf->adq_enabled) { 2430 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs = 2431 qci->num_queue_pairs; 2432 } else { 2433 for (i = 0; i < vf->num_tc; i++) { 2434 vsi = pf->vsi[vf->ch[i].vsi_idx]; 2435 vsi->num_queue_pairs = vf->ch[i].num_qps; 2436 2437 if (i40e_update_adq_vsi_queues(vsi, i)) { 2438 aq_ret = -EIO; 2439 goto error_param; 2440 } 2441 } 2442 } 2443 2444 error_param: 2445 /* send the response to the VF */ 2446 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES, 2447 aq_ret); 2448 } 2449 2450 /** 2451 * i40e_validate_queue_map - check queue map is valid 2452 * @vf: the VF structure pointer 2453 * @vsi_id: vsi id 2454 * @queuemap: Tx or Rx queue map 2455 * 2456 * check if Tx or Rx queue map is valid 2457 **/ i40e_validate_queue_map(struct i40e_vf * vf,u16 vsi_id,unsigned long queuemap)2458 static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id, 2459 unsigned long queuemap) 2460 { 2461 u16 vsi_queue_id, queue_id; 2462 2463 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) { 2464 if (vf->adq_enabled) { 2465 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id; 2466 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF); 2467 } else { 2468 queue_id = vsi_queue_id; 2469 } 2470 2471 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id)) 2472 return -EINVAL; 2473 } 2474 2475 return 0; 2476 } 2477 2478 /** 2479 * i40e_vc_config_irq_map_msg 2480 * @vf: pointer to the VF info 2481 * @msg: pointer to the msg buffer 2482 * 2483 * called from the VF to configure the irq to 2484 * queue map 2485 **/ i40e_vc_config_irq_map_msg(struct i40e_vf * vf,u8 * msg)2486 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg) 2487 { 2488 struct virtchnl_irq_map_info *irqmap_info = 2489 (struct virtchnl_irq_map_info *)msg; 2490 struct virtchnl_vector_map *map; 2491 int aq_ret = 0; 2492 u16 vsi_id; 2493 int i; 2494 2495 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 2496 aq_ret = -EINVAL; 2497 goto error_param; 2498 } 2499 2500 if (irqmap_info->num_vectors > 2501 vf->pf->hw.func_caps.num_msix_vectors_vf) { 2502 aq_ret = -EINVAL; 2503 goto error_param; 2504 } 2505 2506 for (i = 0; i < irqmap_info->num_vectors; i++) { 2507 map = &irqmap_info->vecmap[i]; 2508 /* validate msg params */ 2509 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) || 2510 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) { 2511 aq_ret = -EINVAL; 2512 goto error_param; 2513 } 2514 vsi_id = map->vsi_id; 2515 2516 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) { 2517 aq_ret = -EINVAL; 2518 goto error_param; 2519 } 2520 2521 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) { 2522 aq_ret = -EINVAL; 2523 goto error_param; 2524 } 2525 2526 i40e_config_irq_link_list(vf, vsi_id, map); 2527 } 2528 error_param: 2529 /* send the response to the VF */ 2530 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP, 2531 aq_ret); 2532 } 2533 2534 /** 2535 * i40e_ctrl_vf_tx_rings 2536 * @vsi: the SRIOV VSI being configured 2537 * @q_map: bit map of the queues to be enabled 2538 * @enable: start or stop the queue 2539 **/ i40e_ctrl_vf_tx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2540 static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map, 2541 bool enable) 2542 { 2543 struct i40e_pf *pf = vsi->back; 2544 int ret = 0; 2545 u16 q_id; 2546 2547 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) { 2548 ret = i40e_control_wait_tx_q(vsi->seid, pf, 2549 vsi->base_queue + q_id, 2550 false /*is xdp*/, enable); 2551 if (ret) 2552 break; 2553 } 2554 return ret; 2555 } 2556 2557 /** 2558 * i40e_ctrl_vf_rx_rings 2559 * @vsi: the SRIOV VSI being configured 2560 * @q_map: bit map of the queues to be enabled 2561 * @enable: start or stop the queue 2562 **/ i40e_ctrl_vf_rx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2563 static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map, 2564 bool enable) 2565 { 2566 struct i40e_pf *pf = vsi->back; 2567 int ret = 0; 2568 u16 q_id; 2569 2570 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) { 2571 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id, 2572 enable); 2573 if (ret) 2574 break; 2575 } 2576 return ret; 2577 } 2578 2579 /** 2580 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL 2581 * @vqs: virtchnl_queue_select structure containing bitmaps to validate 2582 * 2583 * Returns true if validation was successful, else false. 2584 */ i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select * vqs)2585 static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs) 2586 { 2587 if ((!vqs->rx_queues && !vqs->tx_queues) || 2588 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) || 2589 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES)) 2590 return false; 2591 2592 return true; 2593 } 2594 2595 /** 2596 * i40e_vc_enable_queues_msg 2597 * @vf: pointer to the VF info 2598 * @msg: pointer to the msg buffer 2599 * 2600 * called from the VF to enable all or specific queue(s) 2601 **/ i40e_vc_enable_queues_msg(struct i40e_vf * vf,u8 * msg)2602 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg) 2603 { 2604 struct virtchnl_queue_select *vqs = 2605 (struct virtchnl_queue_select *)msg; 2606 struct i40e_pf *pf = vf->pf; 2607 int aq_ret = 0; 2608 int i; 2609 2610 if (vf->is_disabled_from_host) { 2611 aq_ret = -EPERM; 2612 dev_info(&pf->pdev->dev, 2613 "Admin has disabled VF %d, will not enable queues\n", 2614 vf->vf_id); 2615 goto error_param; 2616 } 2617 2618 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) { 2619 aq_ret = -EINVAL; 2620 goto error_param; 2621 } 2622 2623 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { 2624 aq_ret = -EINVAL; 2625 goto error_param; 2626 } 2627 2628 if (!i40e_vc_validate_vqs_bitmaps(vqs)) { 2629 aq_ret = -EINVAL; 2630 goto error_param; 2631 } 2632 2633 /* Use the queue bit map sent by the VF */ 2634 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues, 2635 true)) { 2636 aq_ret = -EIO; 2637 goto error_param; 2638 } 2639 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues, 2640 true)) { 2641 aq_ret = -EIO; 2642 goto error_param; 2643 } 2644 2645 /* need to start the rings for additional ADq VSI's as well */ 2646 if (vf->adq_enabled) { 2647 /* zero belongs to LAN VSI */ 2648 for (i = 1; i < vf->num_tc; i++) { 2649 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx])) 2650 aq_ret = -EIO; 2651 } 2652 } 2653 2654 error_param: 2655 /* send the response to the VF */ 2656 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES, 2657 aq_ret); 2658 } 2659 2660 /** 2661 * i40e_vc_disable_queues_msg 2662 * @vf: pointer to the VF info 2663 * @msg: pointer to the msg buffer 2664 * 2665 * called from the VF to disable all or specific 2666 * queue(s) 2667 **/ i40e_vc_disable_queues_msg(struct i40e_vf * vf,u8 * msg)2668 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg) 2669 { 2670 struct virtchnl_queue_select *vqs = 2671 (struct virtchnl_queue_select *)msg; 2672 struct i40e_pf *pf = vf->pf; 2673 int aq_ret = 0; 2674 2675 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 2676 aq_ret = -EINVAL; 2677 goto error_param; 2678 } 2679 2680 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { 2681 aq_ret = -EINVAL; 2682 goto error_param; 2683 } 2684 2685 if (!i40e_vc_validate_vqs_bitmaps(vqs)) { 2686 aq_ret = -EINVAL; 2687 goto error_param; 2688 } 2689 2690 /* Use the queue bit map sent by the VF */ 2691 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues, 2692 false)) { 2693 aq_ret = -EIO; 2694 goto error_param; 2695 } 2696 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues, 2697 false)) { 2698 aq_ret = -EIO; 2699 goto error_param; 2700 } 2701 error_param: 2702 /* send the response to the VF */ 2703 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES, 2704 aq_ret); 2705 } 2706 2707 /** 2708 * i40e_check_enough_queue - find big enough queue number 2709 * @vf: pointer to the VF info 2710 * @needed: the number of items needed 2711 * 2712 * Returns the base item index of the queue, or negative for error 2713 **/ i40e_check_enough_queue(struct i40e_vf * vf,u16 needed)2714 static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed) 2715 { 2716 unsigned int i, cur_queues, more, pool_size; 2717 struct i40e_lump_tracking *pile; 2718 struct i40e_pf *pf = vf->pf; 2719 struct i40e_vsi *vsi; 2720 2721 vsi = pf->vsi[vf->lan_vsi_idx]; 2722 cur_queues = vsi->alloc_queue_pairs; 2723 2724 /* if current allocated queues are enough for need */ 2725 if (cur_queues >= needed) 2726 return vsi->base_queue; 2727 2728 pile = pf->qp_pile; 2729 if (cur_queues > 0) { 2730 /* if the allocated queues are not zero 2731 * just check if there are enough queues for more 2732 * behind the allocated queues. 2733 */ 2734 more = needed - cur_queues; 2735 for (i = vsi->base_queue + cur_queues; 2736 i < pile->num_entries; i++) { 2737 if (pile->list[i] & I40E_PILE_VALID_BIT) 2738 break; 2739 2740 if (more-- == 1) 2741 /* there is enough */ 2742 return vsi->base_queue; 2743 } 2744 } 2745 2746 pool_size = 0; 2747 for (i = 0; i < pile->num_entries; i++) { 2748 if (pile->list[i] & I40E_PILE_VALID_BIT) { 2749 pool_size = 0; 2750 continue; 2751 } 2752 if (needed <= ++pool_size) 2753 /* there is enough */ 2754 return i; 2755 } 2756 2757 return -ENOMEM; 2758 } 2759 2760 /** 2761 * i40e_vc_request_queues_msg 2762 * @vf: pointer to the VF info 2763 * @msg: pointer to the msg buffer 2764 * 2765 * VFs get a default number of queues but can use this message to request a 2766 * different number. If the request is successful, PF will reset the VF and 2767 * return 0. If unsuccessful, PF will send message informing VF of number of 2768 * available queues and return result of sending VF a message. 2769 **/ i40e_vc_request_queues_msg(struct i40e_vf * vf,u8 * msg)2770 static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg) 2771 { 2772 struct virtchnl_vf_res_request *vfres = 2773 (struct virtchnl_vf_res_request *)msg; 2774 u16 req_pairs = vfres->num_queue_pairs; 2775 u8 cur_pairs = vf->num_queue_pairs; 2776 struct i40e_pf *pf = vf->pf; 2777 2778 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) 2779 return -EINVAL; 2780 2781 if (req_pairs > I40E_MAX_VF_QUEUES) { 2782 dev_err(&pf->pdev->dev, 2783 "VF %d tried to request more than %d queues.\n", 2784 vf->vf_id, 2785 I40E_MAX_VF_QUEUES); 2786 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES; 2787 } else if (req_pairs - cur_pairs > pf->queues_left) { 2788 dev_warn(&pf->pdev->dev, 2789 "VF %d requested %d more queues, but only %d left.\n", 2790 vf->vf_id, 2791 req_pairs - cur_pairs, 2792 pf->queues_left); 2793 vfres->num_queue_pairs = pf->queues_left + cur_pairs; 2794 } else if (i40e_check_enough_queue(vf, req_pairs) < 0) { 2795 dev_warn(&pf->pdev->dev, 2796 "VF %d requested %d more queues, but there is not enough for it.\n", 2797 vf->vf_id, 2798 req_pairs - cur_pairs); 2799 vfres->num_queue_pairs = cur_pairs; 2800 } else { 2801 /* successful request */ 2802 vf->num_req_queues = req_pairs; 2803 i40e_vc_reset_vf(vf, true); 2804 return 0; 2805 } 2806 2807 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0, 2808 (u8 *)vfres, sizeof(*vfres)); 2809 } 2810 2811 /** 2812 * i40e_vc_get_stats_msg 2813 * @vf: pointer to the VF info 2814 * @msg: pointer to the msg buffer 2815 * 2816 * called from the VF to get vsi stats 2817 **/ i40e_vc_get_stats_msg(struct i40e_vf * vf,u8 * msg)2818 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg) 2819 { 2820 struct virtchnl_queue_select *vqs = 2821 (struct virtchnl_queue_select *)msg; 2822 struct i40e_pf *pf = vf->pf; 2823 struct i40e_eth_stats stats; 2824 int aq_ret = 0; 2825 struct i40e_vsi *vsi; 2826 2827 memset(&stats, 0, sizeof(struct i40e_eth_stats)); 2828 2829 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 2830 aq_ret = -EINVAL; 2831 goto error_param; 2832 } 2833 2834 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { 2835 aq_ret = -EINVAL; 2836 goto error_param; 2837 } 2838 2839 vsi = pf->vsi[vf->lan_vsi_idx]; 2840 if (!vsi) { 2841 aq_ret = -EINVAL; 2842 goto error_param; 2843 } 2844 i40e_update_eth_stats(vsi); 2845 stats = vsi->eth_stats; 2846 2847 error_param: 2848 /* send the response back to the VF */ 2849 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret, 2850 (u8 *)&stats, sizeof(stats)); 2851 } 2852 2853 /** 2854 * i40e_can_vf_change_mac 2855 * @vf: pointer to the VF info 2856 * 2857 * Return true if the VF is allowed to change its MAC filters, false otherwise 2858 */ i40e_can_vf_change_mac(struct i40e_vf * vf)2859 static bool i40e_can_vf_change_mac(struct i40e_vf *vf) 2860 { 2861 /* If the VF MAC address has been set administratively (via the 2862 * ndo_set_vf_mac command), then deny permission to the VF to 2863 * add/delete unicast MAC addresses, unless the VF is trusted 2864 */ 2865 if (vf->pf_set_mac && !vf->trusted) 2866 return false; 2867 2868 return true; 2869 } 2870 2871 #define I40E_MAX_MACVLAN_PER_HW 3072 2872 #define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW / \ 2873 (num_ports)) 2874 /* If the VF is not trusted restrict the number of MAC/VLAN it can program 2875 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast 2876 */ 2877 #define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1) 2878 #define I40E_VC_MAX_VLAN_PER_VF 16 2879 2880 #define I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(vf_num, num_ports) \ 2881 ({ typeof(vf_num) vf_num_ = (vf_num); \ 2882 typeof(num_ports) num_ports_ = (num_ports); \ 2883 ((I40E_MAX_MACVLAN_PER_PF(num_ports_) - vf_num_ * \ 2884 I40E_VC_MAX_MAC_ADDR_PER_VF) / vf_num_) + \ 2885 I40E_VC_MAX_MAC_ADDR_PER_VF; }) 2886 /** 2887 * i40e_check_vf_permission 2888 * @vf: pointer to the VF info 2889 * @al: MAC address list from virtchnl 2890 * 2891 * Check that the given list of MAC addresses is allowed. Will return -EPERM 2892 * if any address in the list is not valid. Checks the following conditions: 2893 * 2894 * 1) broadcast and zero addresses are never valid 2895 * 2) unicast addresses are not allowed if the VMM has administratively set 2896 * the VF MAC address, unless the VF is marked as privileged. 2897 * 3) There is enough space to add all the addresses. 2898 * 2899 * Note that to guarantee consistency, it is expected this function be called 2900 * while holding the mac_filter_hash_lock, as otherwise the current number of 2901 * addresses might not be accurate. 2902 **/ i40e_check_vf_permission(struct i40e_vf * vf,struct virtchnl_ether_addr_list * al)2903 static inline int i40e_check_vf_permission(struct i40e_vf *vf, 2904 struct virtchnl_ether_addr_list *al) 2905 { 2906 struct i40e_pf *pf = vf->pf; 2907 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx]; 2908 struct i40e_hw *hw = &pf->hw; 2909 int mac2add_cnt = 0; 2910 int i; 2911 2912 for (i = 0; i < al->num_elements; i++) { 2913 struct i40e_mac_filter *f; 2914 u8 *addr = al->list[i].addr; 2915 2916 if (is_broadcast_ether_addr(addr) || 2917 is_zero_ether_addr(addr)) { 2918 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", 2919 addr); 2920 return -EINVAL; 2921 } 2922 2923 /* If the host VMM administrator has set the VF MAC address 2924 * administratively via the ndo_set_vf_mac command then deny 2925 * permission to the VF to add or delete unicast MAC addresses. 2926 * Unless the VF is privileged and then it can do whatever. 2927 * The VF may request to set the MAC address filter already 2928 * assigned to it so do not return an error in that case. 2929 */ 2930 if (!i40e_can_vf_change_mac(vf) && 2931 !is_multicast_ether_addr(addr) && 2932 !ether_addr_equal(addr, vf->default_lan_addr.addr)) { 2933 dev_err(&pf->pdev->dev, 2934 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n"); 2935 return -EPERM; 2936 } 2937 2938 /*count filters that really will be added*/ 2939 f = i40e_find_mac(vsi, addr); 2940 if (!f) 2941 ++mac2add_cnt; 2942 } 2943 2944 /* If this VF is not privileged, then we can't add more than a limited 2945 * number of addresses. Check to make sure that the additions do not 2946 * push us over the limit. 2947 */ 2948 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) { 2949 if ((i40e_count_filters(vsi) + mac2add_cnt) > 2950 I40E_VC_MAX_MAC_ADDR_PER_VF) { 2951 dev_err(&pf->pdev->dev, 2952 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n"); 2953 return -EPERM; 2954 } 2955 /* If this VF is trusted, it can use more resources than untrusted. 2956 * However to ensure that every trusted VF has appropriate number of 2957 * resources, divide whole pool of resources per port and then across 2958 * all VFs. 2959 */ 2960 } else { 2961 if ((i40e_count_filters(vsi) + mac2add_cnt) > 2962 I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs, 2963 hw->num_ports)) { 2964 dev_err(&pf->pdev->dev, 2965 "Cannot add more MAC addresses, trusted VF exhausted it's resources\n"); 2966 return -EPERM; 2967 } 2968 } 2969 return 0; 2970 } 2971 2972 /** 2973 * i40e_vc_ether_addr_type - get type of virtchnl_ether_addr 2974 * @vc_ether_addr: used to extract the type 2975 **/ 2976 static u8 i40e_vc_ether_addr_type(struct virtchnl_ether_addr * vc_ether_addr)2977 i40e_vc_ether_addr_type(struct virtchnl_ether_addr *vc_ether_addr) 2978 { 2979 return vc_ether_addr->type & VIRTCHNL_ETHER_ADDR_TYPE_MASK; 2980 } 2981 2982 /** 2983 * i40e_is_vc_addr_legacy 2984 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type 2985 * 2986 * check if the MAC address is from an older VF 2987 **/ 2988 static bool i40e_is_vc_addr_legacy(struct virtchnl_ether_addr * vc_ether_addr)2989 i40e_is_vc_addr_legacy(struct virtchnl_ether_addr *vc_ether_addr) 2990 { 2991 return i40e_vc_ether_addr_type(vc_ether_addr) == 2992 VIRTCHNL_ETHER_ADDR_LEGACY; 2993 } 2994 2995 /** 2996 * i40e_is_vc_addr_primary 2997 * @vc_ether_addr: VIRTCHNL structure that contains MAC and type 2998 * 2999 * check if the MAC address is the VF's primary MAC 3000 * This function should only be called when the MAC address in 3001 * virtchnl_ether_addr is a valid unicast MAC 3002 **/ 3003 static bool i40e_is_vc_addr_primary(struct virtchnl_ether_addr * vc_ether_addr)3004 i40e_is_vc_addr_primary(struct virtchnl_ether_addr *vc_ether_addr) 3005 { 3006 return i40e_vc_ether_addr_type(vc_ether_addr) == 3007 VIRTCHNL_ETHER_ADDR_PRIMARY; 3008 } 3009 3010 /** 3011 * i40e_update_vf_mac_addr 3012 * @vf: VF to update 3013 * @vc_ether_addr: structure from VIRTCHNL with MAC to add 3014 * 3015 * update the VF's cached hardware MAC if allowed 3016 **/ 3017 static void i40e_update_vf_mac_addr(struct i40e_vf * vf,struct virtchnl_ether_addr * vc_ether_addr)3018 i40e_update_vf_mac_addr(struct i40e_vf *vf, 3019 struct virtchnl_ether_addr *vc_ether_addr) 3020 { 3021 u8 *mac_addr = vc_ether_addr->addr; 3022 3023 if (!is_valid_ether_addr(mac_addr)) 3024 return; 3025 3026 /* If request to add MAC filter is a primary request update its default 3027 * MAC address with the requested one. If it is a legacy request then 3028 * check if current default is empty if so update the default MAC 3029 */ 3030 if (i40e_is_vc_addr_primary(vc_ether_addr)) { 3031 ether_addr_copy(vf->default_lan_addr.addr, mac_addr); 3032 } else if (i40e_is_vc_addr_legacy(vc_ether_addr)) { 3033 if (is_zero_ether_addr(vf->default_lan_addr.addr)) 3034 ether_addr_copy(vf->default_lan_addr.addr, mac_addr); 3035 } 3036 } 3037 3038 /** 3039 * i40e_vc_add_mac_addr_msg 3040 * @vf: pointer to the VF info 3041 * @msg: pointer to the msg buffer 3042 * 3043 * add guest mac address filter 3044 **/ i40e_vc_add_mac_addr_msg(struct i40e_vf * vf,u8 * msg)3045 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg) 3046 { 3047 struct virtchnl_ether_addr_list *al = 3048 (struct virtchnl_ether_addr_list *)msg; 3049 struct i40e_pf *pf = vf->pf; 3050 struct i40e_vsi *vsi = NULL; 3051 int ret = 0; 3052 int i; 3053 3054 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) || 3055 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) { 3056 ret = -EINVAL; 3057 goto error_param; 3058 } 3059 3060 vsi = pf->vsi[vf->lan_vsi_idx]; 3061 3062 /* Lock once, because all function inside for loop accesses VSI's 3063 * MAC filter list which needs to be protected using same lock. 3064 */ 3065 spin_lock_bh(&vsi->mac_filter_hash_lock); 3066 3067 ret = i40e_check_vf_permission(vf, al); 3068 if (ret) { 3069 spin_unlock_bh(&vsi->mac_filter_hash_lock); 3070 goto error_param; 3071 } 3072 3073 /* add new addresses to the list */ 3074 for (i = 0; i < al->num_elements; i++) { 3075 struct i40e_mac_filter *f; 3076 3077 f = i40e_find_mac(vsi, al->list[i].addr); 3078 if (!f) { 3079 f = i40e_add_mac_filter(vsi, al->list[i].addr); 3080 3081 if (!f) { 3082 dev_err(&pf->pdev->dev, 3083 "Unable to add MAC filter %pM for VF %d\n", 3084 al->list[i].addr, vf->vf_id); 3085 ret = -EINVAL; 3086 spin_unlock_bh(&vsi->mac_filter_hash_lock); 3087 goto error_param; 3088 } 3089 } 3090 i40e_update_vf_mac_addr(vf, &al->list[i]); 3091 } 3092 spin_unlock_bh(&vsi->mac_filter_hash_lock); 3093 3094 /* program the updated filter list */ 3095 ret = i40e_sync_vsi_filters(vsi); 3096 if (ret) 3097 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n", 3098 vf->vf_id, ret); 3099 3100 error_param: 3101 /* send the response to the VF */ 3102 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR, 3103 ret, NULL, 0); 3104 } 3105 3106 /** 3107 * i40e_vc_del_mac_addr_msg 3108 * @vf: pointer to the VF info 3109 * @msg: pointer to the msg buffer 3110 * 3111 * remove guest mac address filter 3112 **/ i40e_vc_del_mac_addr_msg(struct i40e_vf * vf,u8 * msg)3113 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg) 3114 { 3115 struct virtchnl_ether_addr_list *al = 3116 (struct virtchnl_ether_addr_list *)msg; 3117 bool was_unimac_deleted = false; 3118 struct i40e_pf *pf = vf->pf; 3119 struct i40e_vsi *vsi = NULL; 3120 int ret = 0; 3121 int i; 3122 3123 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) || 3124 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) { 3125 ret = -EINVAL; 3126 goto error_param; 3127 } 3128 3129 for (i = 0; i < al->num_elements; i++) { 3130 if (is_broadcast_ether_addr(al->list[i].addr) || 3131 is_zero_ether_addr(al->list[i].addr)) { 3132 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n", 3133 al->list[i].addr, vf->vf_id); 3134 ret = -EINVAL; 3135 goto error_param; 3136 } 3137 } 3138 vsi = pf->vsi[vf->lan_vsi_idx]; 3139 3140 spin_lock_bh(&vsi->mac_filter_hash_lock); 3141 /* delete addresses from the list */ 3142 for (i = 0; i < al->num_elements; i++) { 3143 const u8 *addr = al->list[i].addr; 3144 3145 /* Allow to delete VF primary MAC only if it was not set 3146 * administratively by PF or if VF is trusted. 3147 */ 3148 if (ether_addr_equal(addr, vf->default_lan_addr.addr)) { 3149 if (i40e_can_vf_change_mac(vf)) 3150 was_unimac_deleted = true; 3151 else 3152 continue; 3153 } 3154 3155 if (i40e_del_mac_filter(vsi, al->list[i].addr)) { 3156 ret = -EINVAL; 3157 spin_unlock_bh(&vsi->mac_filter_hash_lock); 3158 goto error_param; 3159 } 3160 } 3161 3162 spin_unlock_bh(&vsi->mac_filter_hash_lock); 3163 3164 if (was_unimac_deleted) 3165 eth_zero_addr(vf->default_lan_addr.addr); 3166 3167 /* program the updated filter list */ 3168 ret = i40e_sync_vsi_filters(vsi); 3169 if (ret) 3170 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n", 3171 vf->vf_id, ret); 3172 3173 if (vf->trusted && was_unimac_deleted) { 3174 struct i40e_mac_filter *f; 3175 struct hlist_node *h; 3176 u8 *macaddr = NULL; 3177 int bkt; 3178 3179 /* set last unicast mac address as default */ 3180 spin_lock_bh(&vsi->mac_filter_hash_lock); 3181 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) { 3182 if (is_valid_ether_addr(f->macaddr)) 3183 macaddr = f->macaddr; 3184 } 3185 if (macaddr) 3186 ether_addr_copy(vf->default_lan_addr.addr, macaddr); 3187 spin_unlock_bh(&vsi->mac_filter_hash_lock); 3188 } 3189 error_param: 3190 /* send the response to the VF */ 3191 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret); 3192 } 3193 3194 /** 3195 * i40e_vc_add_vlan_msg 3196 * @vf: pointer to the VF info 3197 * @msg: pointer to the msg buffer 3198 * 3199 * program guest vlan id 3200 **/ i40e_vc_add_vlan_msg(struct i40e_vf * vf,u8 * msg)3201 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg) 3202 { 3203 struct virtchnl_vlan_filter_list *vfl = 3204 (struct virtchnl_vlan_filter_list *)msg; 3205 struct i40e_pf *pf = vf->pf; 3206 struct i40e_vsi *vsi = NULL; 3207 int aq_ret = 0; 3208 int i; 3209 3210 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) && 3211 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) { 3212 dev_err(&pf->pdev->dev, 3213 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n"); 3214 goto error_param; 3215 } 3216 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) || 3217 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) { 3218 aq_ret = -EINVAL; 3219 goto error_param; 3220 } 3221 3222 for (i = 0; i < vfl->num_elements; i++) { 3223 if (vfl->vlan_id[i] > I40E_MAX_VLANID) { 3224 aq_ret = -EINVAL; 3225 dev_err(&pf->pdev->dev, 3226 "invalid VF VLAN id %d\n", vfl->vlan_id[i]); 3227 goto error_param; 3228 } 3229 } 3230 vsi = pf->vsi[vf->lan_vsi_idx]; 3231 if (vsi->info.pvid) { 3232 aq_ret = -EINVAL; 3233 goto error_param; 3234 } 3235 3236 i40e_vlan_stripping_enable(vsi); 3237 for (i = 0; i < vfl->num_elements; i++) { 3238 /* add new VLAN filter */ 3239 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]); 3240 if (!ret) 3241 vf->num_vlan++; 3242 3243 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states)) 3244 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid, 3245 true, 3246 vfl->vlan_id[i], 3247 NULL); 3248 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states)) 3249 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid, 3250 true, 3251 vfl->vlan_id[i], 3252 NULL); 3253 3254 if (ret) 3255 dev_err(&pf->pdev->dev, 3256 "Unable to add VLAN filter %d for VF %d, error %d\n", 3257 vfl->vlan_id[i], vf->vf_id, ret); 3258 } 3259 3260 error_param: 3261 /* send the response to the VF */ 3262 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret); 3263 } 3264 3265 /** 3266 * i40e_vc_remove_vlan_msg 3267 * @vf: pointer to the VF info 3268 * @msg: pointer to the msg buffer 3269 * 3270 * remove programmed guest vlan id 3271 **/ i40e_vc_remove_vlan_msg(struct i40e_vf * vf,u8 * msg)3272 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg) 3273 { 3274 struct virtchnl_vlan_filter_list *vfl = 3275 (struct virtchnl_vlan_filter_list *)msg; 3276 struct i40e_pf *pf = vf->pf; 3277 struct i40e_vsi *vsi = NULL; 3278 int aq_ret = 0; 3279 int i; 3280 3281 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) || 3282 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) { 3283 aq_ret = -EINVAL; 3284 goto error_param; 3285 } 3286 3287 for (i = 0; i < vfl->num_elements; i++) { 3288 if (vfl->vlan_id[i] > I40E_MAX_VLANID) { 3289 aq_ret = -EINVAL; 3290 goto error_param; 3291 } 3292 } 3293 3294 vsi = pf->vsi[vf->lan_vsi_idx]; 3295 if (vsi->info.pvid) { 3296 if (vfl->num_elements > 1 || vfl->vlan_id[0]) 3297 aq_ret = -EINVAL; 3298 goto error_param; 3299 } 3300 3301 for (i = 0; i < vfl->num_elements; i++) { 3302 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]); 3303 vf->num_vlan--; 3304 3305 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states)) 3306 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid, 3307 false, 3308 vfl->vlan_id[i], 3309 NULL); 3310 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states)) 3311 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid, 3312 false, 3313 vfl->vlan_id[i], 3314 NULL); 3315 } 3316 3317 error_param: 3318 /* send the response to the VF */ 3319 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret); 3320 } 3321 3322 /** 3323 * i40e_vc_rdma_msg 3324 * @vf: pointer to the VF info 3325 * @msg: pointer to the msg buffer 3326 * @msglen: msg length 3327 * 3328 * called from the VF for the iwarp msgs 3329 **/ i40e_vc_rdma_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)3330 static int i40e_vc_rdma_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) 3331 { 3332 struct i40e_pf *pf = vf->pf; 3333 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id; 3334 int aq_ret = 0; 3335 3336 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) || 3337 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) { 3338 aq_ret = -EINVAL; 3339 goto error_param; 3340 } 3341 3342 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id, 3343 msg, msglen); 3344 3345 error_param: 3346 /* send the response to the VF */ 3347 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_RDMA, 3348 aq_ret); 3349 } 3350 3351 /** 3352 * i40e_vc_rdma_qvmap_msg 3353 * @vf: pointer to the VF info 3354 * @msg: pointer to the msg buffer 3355 * @config: config qvmap or release it 3356 * 3357 * called from the VF for the iwarp msgs 3358 **/ i40e_vc_rdma_qvmap_msg(struct i40e_vf * vf,u8 * msg,bool config)3359 static int i40e_vc_rdma_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config) 3360 { 3361 struct virtchnl_rdma_qvlist_info *qvlist_info = 3362 (struct virtchnl_rdma_qvlist_info *)msg; 3363 int aq_ret = 0; 3364 3365 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) || 3366 !test_bit(I40E_VF_STATE_RDMAENA, &vf->vf_states)) { 3367 aq_ret = -EINVAL; 3368 goto error_param; 3369 } 3370 3371 if (config) { 3372 if (i40e_config_rdma_qvlist(vf, qvlist_info)) 3373 aq_ret = -EINVAL; 3374 } else { 3375 i40e_release_rdma_qvlist(vf); 3376 } 3377 3378 error_param: 3379 /* send the response to the VF */ 3380 return i40e_vc_send_resp_to_vf(vf, 3381 config ? VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP : 3382 VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP, 3383 aq_ret); 3384 } 3385 3386 /** 3387 * i40e_vc_config_rss_key 3388 * @vf: pointer to the VF info 3389 * @msg: pointer to the msg buffer 3390 * 3391 * Configure the VF's RSS key 3392 **/ i40e_vc_config_rss_key(struct i40e_vf * vf,u8 * msg)3393 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg) 3394 { 3395 struct virtchnl_rss_key *vrk = 3396 (struct virtchnl_rss_key *)msg; 3397 struct i40e_pf *pf = vf->pf; 3398 struct i40e_vsi *vsi = NULL; 3399 int aq_ret = 0; 3400 3401 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) || 3402 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) || 3403 vrk->key_len != I40E_HKEY_ARRAY_SIZE) { 3404 aq_ret = -EINVAL; 3405 goto err; 3406 } 3407 3408 vsi = pf->vsi[vf->lan_vsi_idx]; 3409 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0); 3410 err: 3411 /* send the response to the VF */ 3412 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY, 3413 aq_ret); 3414 } 3415 3416 /** 3417 * i40e_vc_config_rss_lut 3418 * @vf: pointer to the VF info 3419 * @msg: pointer to the msg buffer 3420 * 3421 * Configure the VF's RSS LUT 3422 **/ i40e_vc_config_rss_lut(struct i40e_vf * vf,u8 * msg)3423 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg) 3424 { 3425 struct virtchnl_rss_lut *vrl = 3426 (struct virtchnl_rss_lut *)msg; 3427 struct i40e_pf *pf = vf->pf; 3428 struct i40e_vsi *vsi = NULL; 3429 int aq_ret = 0; 3430 u16 i; 3431 3432 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) || 3433 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) || 3434 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) { 3435 aq_ret = -EINVAL; 3436 goto err; 3437 } 3438 3439 for (i = 0; i < vrl->lut_entries; i++) 3440 if (vrl->lut[i] >= vf->num_queue_pairs) { 3441 aq_ret = -EINVAL; 3442 goto err; 3443 } 3444 3445 vsi = pf->vsi[vf->lan_vsi_idx]; 3446 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE); 3447 /* send the response to the VF */ 3448 err: 3449 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT, 3450 aq_ret); 3451 } 3452 3453 /** 3454 * i40e_vc_get_rss_hena 3455 * @vf: pointer to the VF info 3456 * @msg: pointer to the msg buffer 3457 * 3458 * Return the RSS HENA bits allowed by the hardware 3459 **/ i40e_vc_get_rss_hena(struct i40e_vf * vf,u8 * msg)3460 static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg) 3461 { 3462 struct virtchnl_rss_hena *vrh = NULL; 3463 struct i40e_pf *pf = vf->pf; 3464 int aq_ret = 0; 3465 int len = 0; 3466 3467 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3468 aq_ret = -EINVAL; 3469 goto err; 3470 } 3471 len = sizeof(struct virtchnl_rss_hena); 3472 3473 vrh = kzalloc(len, GFP_KERNEL); 3474 if (!vrh) { 3475 aq_ret = -ENOMEM; 3476 len = 0; 3477 goto err; 3478 } 3479 vrh->hena = i40e_pf_get_default_rss_hena(pf); 3480 err: 3481 /* send the response back to the VF */ 3482 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS, 3483 aq_ret, (u8 *)vrh, len); 3484 kfree(vrh); 3485 return aq_ret; 3486 } 3487 3488 /** 3489 * i40e_vc_set_rss_hena 3490 * @vf: pointer to the VF info 3491 * @msg: pointer to the msg buffer 3492 * 3493 * Set the RSS HENA bits for the VF 3494 **/ i40e_vc_set_rss_hena(struct i40e_vf * vf,u8 * msg)3495 static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg) 3496 { 3497 struct virtchnl_rss_hena *vrh = 3498 (struct virtchnl_rss_hena *)msg; 3499 struct i40e_pf *pf = vf->pf; 3500 struct i40e_hw *hw = &pf->hw; 3501 int aq_ret = 0; 3502 3503 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3504 aq_ret = -EINVAL; 3505 goto err; 3506 } 3507 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena); 3508 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id), 3509 (u32)(vrh->hena >> 32)); 3510 3511 /* send the response to the VF */ 3512 err: 3513 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret); 3514 } 3515 3516 /** 3517 * i40e_vc_enable_vlan_stripping 3518 * @vf: pointer to the VF info 3519 * @msg: pointer to the msg buffer 3520 * 3521 * Enable vlan header stripping for the VF 3522 **/ i40e_vc_enable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3523 static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg) 3524 { 3525 struct i40e_vsi *vsi; 3526 int aq_ret = 0; 3527 3528 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3529 aq_ret = -EINVAL; 3530 goto err; 3531 } 3532 3533 vsi = vf->pf->vsi[vf->lan_vsi_idx]; 3534 i40e_vlan_stripping_enable(vsi); 3535 3536 /* send the response to the VF */ 3537 err: 3538 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING, 3539 aq_ret); 3540 } 3541 3542 /** 3543 * i40e_vc_disable_vlan_stripping 3544 * @vf: pointer to the VF info 3545 * @msg: pointer to the msg buffer 3546 * 3547 * Disable vlan header stripping for the VF 3548 **/ i40e_vc_disable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3549 static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg) 3550 { 3551 struct i40e_vsi *vsi; 3552 int aq_ret = 0; 3553 3554 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3555 aq_ret = -EINVAL; 3556 goto err; 3557 } 3558 3559 vsi = vf->pf->vsi[vf->lan_vsi_idx]; 3560 i40e_vlan_stripping_disable(vsi); 3561 3562 /* send the response to the VF */ 3563 err: 3564 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING, 3565 aq_ret); 3566 } 3567 3568 /** 3569 * i40e_validate_cloud_filter 3570 * @vf: pointer to VF structure 3571 * @tc_filter: pointer to filter requested 3572 * 3573 * This function validates cloud filter programmed as TC filter for ADq 3574 **/ i40e_validate_cloud_filter(struct i40e_vf * vf,struct virtchnl_filter * tc_filter)3575 static int i40e_validate_cloud_filter(struct i40e_vf *vf, 3576 struct virtchnl_filter *tc_filter) 3577 { 3578 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec; 3579 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec; 3580 struct i40e_pf *pf = vf->pf; 3581 struct i40e_vsi *vsi = NULL; 3582 struct i40e_mac_filter *f; 3583 struct hlist_node *h; 3584 bool found = false; 3585 int bkt; 3586 3587 if (tc_filter->action != VIRTCHNL_ACTION_TC_REDIRECT) { 3588 dev_info(&pf->pdev->dev, 3589 "VF %d: ADQ doesn't support this action (%d)\n", 3590 vf->vf_id, tc_filter->action); 3591 goto err; 3592 } 3593 3594 /* action_meta is TC number here to which the filter is applied */ 3595 if (!tc_filter->action_meta || 3596 tc_filter->action_meta > vf->num_tc) { 3597 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n", 3598 vf->vf_id, tc_filter->action_meta); 3599 goto err; 3600 } 3601 3602 /* Check filter if it's programmed for advanced mode or basic mode. 3603 * There are two ADq modes (for VF only), 3604 * 1. Basic mode: intended to allow as many filter options as possible 3605 * to be added to a VF in Non-trusted mode. Main goal is 3606 * to add filters to its own MAC and VLAN id. 3607 * 2. Advanced mode: is for allowing filters to be applied other than 3608 * its own MAC or VLAN. This mode requires the VF to be 3609 * Trusted. 3610 */ 3611 if (mask.dst_mac[0] && !mask.dst_ip[0]) { 3612 vsi = pf->vsi[vf->lan_vsi_idx]; 3613 f = i40e_find_mac(vsi, data.dst_mac); 3614 3615 if (!f) { 3616 dev_info(&pf->pdev->dev, 3617 "Destination MAC %pM doesn't belong to VF %d\n", 3618 data.dst_mac, vf->vf_id); 3619 goto err; 3620 } 3621 3622 if (mask.vlan_id) { 3623 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, 3624 hlist) { 3625 if (f->vlan == ntohs(data.vlan_id)) { 3626 found = true; 3627 break; 3628 } 3629 } 3630 if (!found) { 3631 dev_info(&pf->pdev->dev, 3632 "VF %d doesn't have any VLAN id %u\n", 3633 vf->vf_id, ntohs(data.vlan_id)); 3634 goto err; 3635 } 3636 } 3637 } else { 3638 /* Check if VF is trusted */ 3639 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) { 3640 dev_err(&pf->pdev->dev, 3641 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n", 3642 vf->vf_id); 3643 return -EIO; 3644 } 3645 } 3646 3647 if (mask.dst_mac[0] & data.dst_mac[0]) { 3648 if (is_broadcast_ether_addr(data.dst_mac) || 3649 is_zero_ether_addr(data.dst_mac)) { 3650 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n", 3651 vf->vf_id, data.dst_mac); 3652 goto err; 3653 } 3654 } 3655 3656 if (mask.src_mac[0] & data.src_mac[0]) { 3657 if (is_broadcast_ether_addr(data.src_mac) || 3658 is_zero_ether_addr(data.src_mac)) { 3659 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n", 3660 vf->vf_id, data.src_mac); 3661 goto err; 3662 } 3663 } 3664 3665 if (mask.dst_port & data.dst_port) { 3666 if (!data.dst_port) { 3667 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n", 3668 vf->vf_id); 3669 goto err; 3670 } 3671 } 3672 3673 if (mask.src_port & data.src_port) { 3674 if (!data.src_port) { 3675 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n", 3676 vf->vf_id); 3677 goto err; 3678 } 3679 } 3680 3681 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW && 3682 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) { 3683 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n", 3684 vf->vf_id); 3685 goto err; 3686 } 3687 3688 if (mask.vlan_id & data.vlan_id) { 3689 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) { 3690 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n", 3691 vf->vf_id); 3692 goto err; 3693 } 3694 } 3695 3696 return 0; 3697 err: 3698 return -EIO; 3699 } 3700 3701 /** 3702 * i40e_find_vsi_from_seid - searches for the vsi with the given seid 3703 * @vf: pointer to the VF info 3704 * @seid: seid of the vsi it is searching for 3705 **/ i40e_find_vsi_from_seid(struct i40e_vf * vf,u16 seid)3706 static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid) 3707 { 3708 struct i40e_pf *pf = vf->pf; 3709 struct i40e_vsi *vsi = NULL; 3710 int i; 3711 3712 for (i = 0; i < vf->num_tc ; i++) { 3713 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id); 3714 if (vsi && vsi->seid == seid) 3715 return vsi; 3716 } 3717 return NULL; 3718 } 3719 3720 /** 3721 * i40e_del_all_cloud_filters 3722 * @vf: pointer to the VF info 3723 * 3724 * This function deletes all cloud filters 3725 **/ i40e_del_all_cloud_filters(struct i40e_vf * vf)3726 static void i40e_del_all_cloud_filters(struct i40e_vf *vf) 3727 { 3728 struct i40e_cloud_filter *cfilter = NULL; 3729 struct i40e_pf *pf = vf->pf; 3730 struct i40e_vsi *vsi = NULL; 3731 struct hlist_node *node; 3732 int ret; 3733 3734 hlist_for_each_entry_safe(cfilter, node, 3735 &vf->cloud_filter_list, cloud_node) { 3736 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid); 3737 3738 if (!vsi) { 3739 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n", 3740 vf->vf_id, cfilter->seid); 3741 continue; 3742 } 3743 3744 if (cfilter->dst_port) 3745 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, 3746 false); 3747 else 3748 ret = i40e_add_del_cloud_filter(vsi, cfilter, false); 3749 if (ret) 3750 dev_err(&pf->pdev->dev, 3751 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n", 3752 vf->vf_id, ERR_PTR(ret), 3753 i40e_aq_str(&pf->hw, 3754 pf->hw.aq.asq_last_status)); 3755 3756 hlist_del(&cfilter->cloud_node); 3757 kfree(cfilter); 3758 vf->num_cloud_filters--; 3759 } 3760 } 3761 3762 /** 3763 * i40e_vc_del_cloud_filter 3764 * @vf: pointer to the VF info 3765 * @msg: pointer to the msg buffer 3766 * 3767 * This function deletes a cloud filter programmed as TC filter for ADq 3768 **/ i40e_vc_del_cloud_filter(struct i40e_vf * vf,u8 * msg)3769 static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg) 3770 { 3771 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg; 3772 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec; 3773 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec; 3774 struct i40e_cloud_filter cfilter, *cf = NULL; 3775 struct i40e_pf *pf = vf->pf; 3776 struct i40e_vsi *vsi = NULL; 3777 struct hlist_node *node; 3778 int aq_ret = 0; 3779 int i, ret; 3780 3781 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3782 aq_ret = -EINVAL; 3783 goto err; 3784 } 3785 3786 if (!vf->adq_enabled) { 3787 dev_info(&pf->pdev->dev, 3788 "VF %d: ADq not enabled, can't apply cloud filter\n", 3789 vf->vf_id); 3790 aq_ret = -EINVAL; 3791 goto err; 3792 } 3793 3794 if (i40e_validate_cloud_filter(vf, vcf)) { 3795 dev_info(&pf->pdev->dev, 3796 "VF %d: Invalid input, can't apply cloud filter\n", 3797 vf->vf_id); 3798 aq_ret = -EINVAL; 3799 goto err; 3800 } 3801 3802 memset(&cfilter, 0, sizeof(cfilter)); 3803 /* parse destination mac address */ 3804 for (i = 0; i < ETH_ALEN; i++) 3805 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i]; 3806 3807 /* parse source mac address */ 3808 for (i = 0; i < ETH_ALEN; i++) 3809 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i]; 3810 3811 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id; 3812 cfilter.dst_port = mask.dst_port & tcf.dst_port; 3813 cfilter.src_port = mask.src_port & tcf.src_port; 3814 3815 switch (vcf->flow_type) { 3816 case VIRTCHNL_TCP_V4_FLOW: 3817 cfilter.n_proto = ETH_P_IP; 3818 if (mask.dst_ip[0] & tcf.dst_ip[0]) 3819 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip, 3820 ARRAY_SIZE(tcf.dst_ip)); 3821 else if (mask.src_ip[0] & tcf.dst_ip[0]) 3822 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip, 3823 ARRAY_SIZE(tcf.dst_ip)); 3824 break; 3825 case VIRTCHNL_TCP_V6_FLOW: 3826 cfilter.n_proto = ETH_P_IPV6; 3827 if (mask.dst_ip[3] & tcf.dst_ip[3]) 3828 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip, 3829 sizeof(cfilter.ip.v6.dst_ip6)); 3830 if (mask.src_ip[3] & tcf.src_ip[3]) 3831 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip, 3832 sizeof(cfilter.ip.v6.src_ip6)); 3833 break; 3834 default: 3835 /* TC filter can be configured based on different combinations 3836 * and in this case IP is not a part of filter config 3837 */ 3838 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n", 3839 vf->vf_id); 3840 } 3841 3842 /* get the vsi to which the tc belongs to */ 3843 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx]; 3844 cfilter.seid = vsi->seid; 3845 cfilter.flags = vcf->field_flags; 3846 3847 /* Deleting TC filter */ 3848 if (tcf.dst_port) 3849 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false); 3850 else 3851 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false); 3852 if (ret) { 3853 dev_err(&pf->pdev->dev, 3854 "VF %d: Failed to delete cloud filter, err %pe aq_err %s\n", 3855 vf->vf_id, ERR_PTR(ret), 3856 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status)); 3857 goto err; 3858 } 3859 3860 hlist_for_each_entry_safe(cf, node, 3861 &vf->cloud_filter_list, cloud_node) { 3862 if (cf->seid != cfilter.seid) 3863 continue; 3864 if (mask.dst_port) 3865 if (cfilter.dst_port != cf->dst_port) 3866 continue; 3867 if (mask.dst_mac[0]) 3868 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac)) 3869 continue; 3870 /* for ipv4 data to be valid, only first byte of mask is set */ 3871 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0]) 3872 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip, 3873 ARRAY_SIZE(tcf.dst_ip))) 3874 continue; 3875 /* for ipv6, mask is set for all sixteen bytes (4 words) */ 3876 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3]) 3877 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6, 3878 sizeof(cfilter.ip.v6.src_ip6))) 3879 continue; 3880 if (mask.vlan_id) 3881 if (cfilter.vlan_id != cf->vlan_id) 3882 continue; 3883 3884 hlist_del(&cf->cloud_node); 3885 kfree(cf); 3886 vf->num_cloud_filters--; 3887 } 3888 3889 err: 3890 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER, 3891 aq_ret); 3892 } 3893 3894 /** 3895 * i40e_vc_add_cloud_filter 3896 * @vf: pointer to the VF info 3897 * @msg: pointer to the msg buffer 3898 * 3899 * This function adds a cloud filter programmed as TC filter for ADq 3900 **/ i40e_vc_add_cloud_filter(struct i40e_vf * vf,u8 * msg)3901 static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg) 3902 { 3903 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg; 3904 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec; 3905 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec; 3906 struct i40e_cloud_filter *cfilter = NULL; 3907 struct i40e_pf *pf = vf->pf; 3908 struct i40e_vsi *vsi = NULL; 3909 int aq_ret = 0; 3910 int i; 3911 3912 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3913 aq_ret = -EINVAL; 3914 goto err_out; 3915 } 3916 3917 if (!vf->adq_enabled) { 3918 dev_info(&pf->pdev->dev, 3919 "VF %d: ADq is not enabled, can't apply cloud filter\n", 3920 vf->vf_id); 3921 aq_ret = -EINVAL; 3922 goto err_out; 3923 } 3924 3925 if (i40e_validate_cloud_filter(vf, vcf)) { 3926 dev_info(&pf->pdev->dev, 3927 "VF %d: Invalid input/s, can't apply cloud filter\n", 3928 vf->vf_id); 3929 aq_ret = -EINVAL; 3930 goto err_out; 3931 } 3932 3933 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL); 3934 if (!cfilter) { 3935 aq_ret = -ENOMEM; 3936 goto err_out; 3937 } 3938 3939 /* parse destination mac address */ 3940 for (i = 0; i < ETH_ALEN; i++) 3941 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i]; 3942 3943 /* parse source mac address */ 3944 for (i = 0; i < ETH_ALEN; i++) 3945 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i]; 3946 3947 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id; 3948 cfilter->dst_port = mask.dst_port & tcf.dst_port; 3949 cfilter->src_port = mask.src_port & tcf.src_port; 3950 3951 switch (vcf->flow_type) { 3952 case VIRTCHNL_TCP_V4_FLOW: 3953 cfilter->n_proto = ETH_P_IP; 3954 if (mask.dst_ip[0] & tcf.dst_ip[0]) 3955 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip, 3956 ARRAY_SIZE(tcf.dst_ip)); 3957 else if (mask.src_ip[0] & tcf.dst_ip[0]) 3958 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip, 3959 ARRAY_SIZE(tcf.dst_ip)); 3960 break; 3961 case VIRTCHNL_TCP_V6_FLOW: 3962 cfilter->n_proto = ETH_P_IPV6; 3963 if (mask.dst_ip[3] & tcf.dst_ip[3]) 3964 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip, 3965 sizeof(cfilter->ip.v6.dst_ip6)); 3966 if (mask.src_ip[3] & tcf.src_ip[3]) 3967 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip, 3968 sizeof(cfilter->ip.v6.src_ip6)); 3969 break; 3970 default: 3971 /* TC filter can be configured based on different combinations 3972 * and in this case IP is not a part of filter config 3973 */ 3974 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n", 3975 vf->vf_id); 3976 } 3977 3978 /* get the VSI to which the TC belongs to */ 3979 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx]; 3980 cfilter->seid = vsi->seid; 3981 cfilter->flags = vcf->field_flags; 3982 3983 /* Adding cloud filter programmed as TC filter */ 3984 if (tcf.dst_port) 3985 aq_ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true); 3986 else 3987 aq_ret = i40e_add_del_cloud_filter(vsi, cfilter, true); 3988 if (aq_ret) { 3989 dev_err(&pf->pdev->dev, 3990 "VF %d: Failed to add cloud filter, err %pe aq_err %s\n", 3991 vf->vf_id, ERR_PTR(aq_ret), 3992 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status)); 3993 goto err_free; 3994 } 3995 3996 INIT_HLIST_NODE(&cfilter->cloud_node); 3997 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list); 3998 /* release the pointer passing it to the collection */ 3999 cfilter = NULL; 4000 vf->num_cloud_filters++; 4001 err_free: 4002 kfree(cfilter); 4003 err_out: 4004 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER, 4005 aq_ret); 4006 } 4007 4008 /** 4009 * i40e_vc_add_qch_msg: Add queue channel and enable ADq 4010 * @vf: pointer to the VF info 4011 * @msg: pointer to the msg buffer 4012 **/ i40e_vc_add_qch_msg(struct i40e_vf * vf,u8 * msg)4013 static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg) 4014 { 4015 struct virtchnl_tc_info *tci = 4016 (struct virtchnl_tc_info *)msg; 4017 struct i40e_pf *pf = vf->pf; 4018 struct i40e_link_status *ls = &pf->hw.phy.link_info; 4019 int i, adq_request_qps = 0; 4020 int aq_ret = 0; 4021 u64 speed = 0; 4022 4023 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 4024 aq_ret = -EINVAL; 4025 goto err; 4026 } 4027 4028 /* ADq cannot be applied if spoof check is ON */ 4029 if (vf->spoofchk) { 4030 dev_err(&pf->pdev->dev, 4031 "Spoof check is ON, turn it OFF to enable ADq\n"); 4032 aq_ret = -EINVAL; 4033 goto err; 4034 } 4035 4036 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) { 4037 dev_err(&pf->pdev->dev, 4038 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n", 4039 vf->vf_id); 4040 aq_ret = -EINVAL; 4041 goto err; 4042 } 4043 4044 /* max number of traffic classes for VF currently capped at 4 */ 4045 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) { 4046 dev_err(&pf->pdev->dev, 4047 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n", 4048 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI); 4049 aq_ret = -EINVAL; 4050 goto err; 4051 } 4052 4053 /* validate queues for each TC */ 4054 for (i = 0; i < tci->num_tc; i++) 4055 if (!tci->list[i].count || 4056 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) { 4057 dev_err(&pf->pdev->dev, 4058 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n", 4059 vf->vf_id, i, tci->list[i].count, 4060 I40E_DEFAULT_QUEUES_PER_VF); 4061 aq_ret = -EINVAL; 4062 goto err; 4063 } 4064 4065 /* need Max VF queues but already have default number of queues */ 4066 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF; 4067 4068 if (pf->queues_left < adq_request_qps) { 4069 dev_err(&pf->pdev->dev, 4070 "No queues left to allocate to VF %d\n", 4071 vf->vf_id); 4072 aq_ret = -EINVAL; 4073 goto err; 4074 } else { 4075 /* we need to allocate max VF queues to enable ADq so as to 4076 * make sure ADq enabled VF always gets back queues when it 4077 * goes through a reset. 4078 */ 4079 vf->num_queue_pairs = I40E_MAX_VF_QUEUES; 4080 } 4081 4082 /* get link speed in MB to validate rate limit */ 4083 speed = i40e_vc_link_speed2mbps(ls->link_speed); 4084 if (speed == SPEED_UNKNOWN) { 4085 dev_err(&pf->pdev->dev, 4086 "Cannot detect link speed\n"); 4087 aq_ret = -EINVAL; 4088 goto err; 4089 } 4090 4091 /* parse data from the queue channel info */ 4092 vf->num_tc = tci->num_tc; 4093 for (i = 0; i < vf->num_tc; i++) { 4094 if (tci->list[i].max_tx_rate) { 4095 if (tci->list[i].max_tx_rate > speed) { 4096 dev_err(&pf->pdev->dev, 4097 "Invalid max tx rate %llu specified for VF %d.", 4098 tci->list[i].max_tx_rate, 4099 vf->vf_id); 4100 aq_ret = -EINVAL; 4101 goto err; 4102 } else { 4103 vf->ch[i].max_tx_rate = 4104 tci->list[i].max_tx_rate; 4105 } 4106 } 4107 vf->ch[i].num_qps = tci->list[i].count; 4108 } 4109 4110 /* set this flag only after making sure all inputs are sane */ 4111 vf->adq_enabled = true; 4112 4113 /* reset the VF in order to allocate resources */ 4114 i40e_vc_reset_vf(vf, true); 4115 4116 return 0; 4117 4118 /* send the response to the VF */ 4119 err: 4120 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS, 4121 aq_ret); 4122 } 4123 4124 /** 4125 * i40e_vc_del_qch_msg 4126 * @vf: pointer to the VF info 4127 * @msg: pointer to the msg buffer 4128 **/ i40e_vc_del_qch_msg(struct i40e_vf * vf,u8 * msg)4129 static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg) 4130 { 4131 struct i40e_pf *pf = vf->pf; 4132 int aq_ret = 0; 4133 4134 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 4135 aq_ret = -EINVAL; 4136 goto err; 4137 } 4138 4139 if (vf->adq_enabled) { 4140 i40e_del_all_cloud_filters(vf); 4141 i40e_del_qch(vf); 4142 vf->adq_enabled = false; 4143 vf->num_tc = 0; 4144 dev_info(&pf->pdev->dev, 4145 "Deleting Queue Channels and cloud filters for ADq on VF %d\n", 4146 vf->vf_id); 4147 } else { 4148 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n", 4149 vf->vf_id); 4150 aq_ret = -EINVAL; 4151 } 4152 4153 /* reset the VF in order to allocate resources */ 4154 i40e_vc_reset_vf(vf, true); 4155 4156 return 0; 4157 4158 err: 4159 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS, 4160 aq_ret); 4161 } 4162 4163 /** 4164 * i40e_vc_process_vf_msg 4165 * @pf: pointer to the PF structure 4166 * @vf_id: source VF id 4167 * @v_opcode: operation code 4168 * @v_retval: unused return value code 4169 * @msg: pointer to the msg buffer 4170 * @msglen: msg length 4171 * 4172 * called from the common aeq/arq handler to 4173 * process request from VF 4174 **/ i40e_vc_process_vf_msg(struct i40e_pf * pf,s16 vf_id,u32 v_opcode,u32 __always_unused v_retval,u8 * msg,u16 msglen)4175 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode, 4176 u32 __always_unused v_retval, u8 *msg, u16 msglen) 4177 { 4178 struct i40e_hw *hw = &pf->hw; 4179 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id; 4180 struct i40e_vf *vf; 4181 int ret; 4182 4183 pf->vf_aq_requests++; 4184 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs) 4185 return -EINVAL; 4186 vf = &(pf->vf[local_vf_id]); 4187 4188 /* Check if VF is disabled. */ 4189 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states)) 4190 return -EINVAL; 4191 4192 /* perform basic checks on the msg */ 4193 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen); 4194 4195 if (ret) { 4196 i40e_vc_send_resp_to_vf(vf, v_opcode, -EINVAL); 4197 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n", 4198 local_vf_id, v_opcode, msglen); 4199 return ret; 4200 } 4201 4202 switch (v_opcode) { 4203 case VIRTCHNL_OP_VERSION: 4204 ret = i40e_vc_get_version_msg(vf, msg); 4205 break; 4206 case VIRTCHNL_OP_GET_VF_RESOURCES: 4207 ret = i40e_vc_get_vf_resources_msg(vf, msg); 4208 i40e_vc_notify_vf_link_state(vf); 4209 break; 4210 case VIRTCHNL_OP_RESET_VF: 4211 i40e_vc_reset_vf(vf, false); 4212 ret = 0; 4213 break; 4214 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE: 4215 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg); 4216 break; 4217 case VIRTCHNL_OP_CONFIG_VSI_QUEUES: 4218 ret = i40e_vc_config_queues_msg(vf, msg); 4219 break; 4220 case VIRTCHNL_OP_CONFIG_IRQ_MAP: 4221 ret = i40e_vc_config_irq_map_msg(vf, msg); 4222 break; 4223 case VIRTCHNL_OP_ENABLE_QUEUES: 4224 ret = i40e_vc_enable_queues_msg(vf, msg); 4225 i40e_vc_notify_vf_link_state(vf); 4226 break; 4227 case VIRTCHNL_OP_DISABLE_QUEUES: 4228 ret = i40e_vc_disable_queues_msg(vf, msg); 4229 break; 4230 case VIRTCHNL_OP_ADD_ETH_ADDR: 4231 ret = i40e_vc_add_mac_addr_msg(vf, msg); 4232 break; 4233 case VIRTCHNL_OP_DEL_ETH_ADDR: 4234 ret = i40e_vc_del_mac_addr_msg(vf, msg); 4235 break; 4236 case VIRTCHNL_OP_ADD_VLAN: 4237 ret = i40e_vc_add_vlan_msg(vf, msg); 4238 break; 4239 case VIRTCHNL_OP_DEL_VLAN: 4240 ret = i40e_vc_remove_vlan_msg(vf, msg); 4241 break; 4242 case VIRTCHNL_OP_GET_STATS: 4243 ret = i40e_vc_get_stats_msg(vf, msg); 4244 break; 4245 case VIRTCHNL_OP_RDMA: 4246 ret = i40e_vc_rdma_msg(vf, msg, msglen); 4247 break; 4248 case VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP: 4249 ret = i40e_vc_rdma_qvmap_msg(vf, msg, true); 4250 break; 4251 case VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP: 4252 ret = i40e_vc_rdma_qvmap_msg(vf, msg, false); 4253 break; 4254 case VIRTCHNL_OP_CONFIG_RSS_KEY: 4255 ret = i40e_vc_config_rss_key(vf, msg); 4256 break; 4257 case VIRTCHNL_OP_CONFIG_RSS_LUT: 4258 ret = i40e_vc_config_rss_lut(vf, msg); 4259 break; 4260 case VIRTCHNL_OP_GET_RSS_HENA_CAPS: 4261 ret = i40e_vc_get_rss_hena(vf, msg); 4262 break; 4263 case VIRTCHNL_OP_SET_RSS_HENA: 4264 ret = i40e_vc_set_rss_hena(vf, msg); 4265 break; 4266 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING: 4267 ret = i40e_vc_enable_vlan_stripping(vf, msg); 4268 break; 4269 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING: 4270 ret = i40e_vc_disable_vlan_stripping(vf, msg); 4271 break; 4272 case VIRTCHNL_OP_REQUEST_QUEUES: 4273 ret = i40e_vc_request_queues_msg(vf, msg); 4274 break; 4275 case VIRTCHNL_OP_ENABLE_CHANNELS: 4276 ret = i40e_vc_add_qch_msg(vf, msg); 4277 break; 4278 case VIRTCHNL_OP_DISABLE_CHANNELS: 4279 ret = i40e_vc_del_qch_msg(vf, msg); 4280 break; 4281 case VIRTCHNL_OP_ADD_CLOUD_FILTER: 4282 ret = i40e_vc_add_cloud_filter(vf, msg); 4283 break; 4284 case VIRTCHNL_OP_DEL_CLOUD_FILTER: 4285 ret = i40e_vc_del_cloud_filter(vf, msg); 4286 break; 4287 case VIRTCHNL_OP_UNKNOWN: 4288 default: 4289 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n", 4290 v_opcode, local_vf_id); 4291 ret = i40e_vc_send_resp_to_vf(vf, v_opcode, 4292 -EOPNOTSUPP); 4293 break; 4294 } 4295 4296 return ret; 4297 } 4298 4299 /** 4300 * i40e_vc_process_vflr_event 4301 * @pf: pointer to the PF structure 4302 * 4303 * called from the vlfr irq handler to 4304 * free up VF resources and state variables 4305 **/ i40e_vc_process_vflr_event(struct i40e_pf * pf)4306 int i40e_vc_process_vflr_event(struct i40e_pf *pf) 4307 { 4308 struct i40e_hw *hw = &pf->hw; 4309 u32 reg, reg_idx, bit_idx; 4310 struct i40e_vf *vf; 4311 int vf_id; 4312 4313 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state)) 4314 return 0; 4315 4316 /* Re-enable the VFLR interrupt cause here, before looking for which 4317 * VF got reset. Otherwise, if another VF gets a reset while the 4318 * first one is being processed, that interrupt will be lost, and 4319 * that VF will be stuck in reset forever. 4320 */ 4321 reg = rd32(hw, I40E_PFINT_ICR0_ENA); 4322 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK; 4323 wr32(hw, I40E_PFINT_ICR0_ENA, reg); 4324 i40e_flush(hw); 4325 4326 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state); 4327 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) { 4328 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32; 4329 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32; 4330 /* read GLGEN_VFLRSTAT register to find out the flr VFs */ 4331 vf = &pf->vf[vf_id]; 4332 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx)); 4333 if (reg & BIT(bit_idx)) 4334 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */ 4335 i40e_reset_vf(vf, true); 4336 } 4337 4338 return 0; 4339 } 4340 4341 /** 4342 * i40e_validate_vf 4343 * @pf: the physical function 4344 * @vf_id: VF identifier 4345 * 4346 * Check that the VF is enabled and the VSI exists. 4347 * 4348 * Returns 0 on success, negative on failure 4349 **/ i40e_validate_vf(struct i40e_pf * pf,int vf_id)4350 static int i40e_validate_vf(struct i40e_pf *pf, int vf_id) 4351 { 4352 struct i40e_vsi *vsi; 4353 struct i40e_vf *vf; 4354 int ret = 0; 4355 4356 if (vf_id >= pf->num_alloc_vfs) { 4357 dev_err(&pf->pdev->dev, 4358 "Invalid VF Identifier %d\n", vf_id); 4359 ret = -EINVAL; 4360 goto err_out; 4361 } 4362 vf = &pf->vf[vf_id]; 4363 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id); 4364 if (!vsi) 4365 ret = -EINVAL; 4366 err_out: 4367 return ret; 4368 } 4369 4370 /** 4371 * i40e_check_vf_init_timeout 4372 * @vf: the virtual function 4373 * 4374 * Check that the VF's initialization was successfully done and if not 4375 * wait up to 300ms for its finish. 4376 * 4377 * Returns true when VF is initialized, false on timeout 4378 **/ i40e_check_vf_init_timeout(struct i40e_vf * vf)4379 static bool i40e_check_vf_init_timeout(struct i40e_vf *vf) 4380 { 4381 int i; 4382 4383 /* When the VF is resetting wait until it is done. 4384 * It can take up to 200 milliseconds, but wait for 4385 * up to 300 milliseconds to be safe. 4386 */ 4387 for (i = 0; i < 15; i++) { 4388 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) 4389 return true; 4390 msleep(20); 4391 } 4392 4393 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) { 4394 dev_err(&vf->pf->pdev->dev, 4395 "VF %d still in reset. Try again.\n", vf->vf_id); 4396 return false; 4397 } 4398 4399 return true; 4400 } 4401 4402 /** 4403 * i40e_ndo_set_vf_mac 4404 * @netdev: network interface device structure 4405 * @vf_id: VF identifier 4406 * @mac: mac address 4407 * 4408 * program VF mac address 4409 **/ i40e_ndo_set_vf_mac(struct net_device * netdev,int vf_id,u8 * mac)4410 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac) 4411 { 4412 struct i40e_netdev_priv *np = netdev_priv(netdev); 4413 struct i40e_vsi *vsi = np->vsi; 4414 struct i40e_pf *pf = vsi->back; 4415 struct i40e_mac_filter *f; 4416 struct i40e_vf *vf; 4417 int ret = 0; 4418 struct hlist_node *h; 4419 int bkt; 4420 4421 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4422 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4423 return -EAGAIN; 4424 } 4425 4426 /* validate the request */ 4427 ret = i40e_validate_vf(pf, vf_id); 4428 if (ret) 4429 goto error_param; 4430 4431 vf = &pf->vf[vf_id]; 4432 if (!i40e_check_vf_init_timeout(vf)) { 4433 ret = -EAGAIN; 4434 goto error_param; 4435 } 4436 vsi = pf->vsi[vf->lan_vsi_idx]; 4437 4438 if (is_multicast_ether_addr(mac)) { 4439 dev_err(&pf->pdev->dev, 4440 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id); 4441 ret = -EINVAL; 4442 goto error_param; 4443 } 4444 4445 /* Lock once because below invoked function add/del_filter requires 4446 * mac_filter_hash_lock to be held 4447 */ 4448 spin_lock_bh(&vsi->mac_filter_hash_lock); 4449 4450 /* delete the temporary mac address */ 4451 if (!is_zero_ether_addr(vf->default_lan_addr.addr)) 4452 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr); 4453 4454 /* Delete all the filters for this VSI - we're going to kill it 4455 * anyway. 4456 */ 4457 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) 4458 __i40e_del_filter(vsi, f); 4459 4460 spin_unlock_bh(&vsi->mac_filter_hash_lock); 4461 4462 /* program mac filter */ 4463 if (i40e_sync_vsi_filters(vsi)) { 4464 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n"); 4465 ret = -EIO; 4466 goto error_param; 4467 } 4468 ether_addr_copy(vf->default_lan_addr.addr, mac); 4469 4470 if (is_zero_ether_addr(mac)) { 4471 vf->pf_set_mac = false; 4472 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id); 4473 } else { 4474 vf->pf_set_mac = true; 4475 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n", 4476 mac, vf_id); 4477 } 4478 4479 /* Force the VF interface down so it has to bring up with new MAC 4480 * address 4481 */ 4482 i40e_vc_reset_vf(vf, true); 4483 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n"); 4484 4485 error_param: 4486 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4487 return ret; 4488 } 4489 4490 /** 4491 * i40e_ndo_set_vf_port_vlan 4492 * @netdev: network interface device structure 4493 * @vf_id: VF identifier 4494 * @vlan_id: mac address 4495 * @qos: priority setting 4496 * @vlan_proto: vlan protocol 4497 * 4498 * program VF vlan id and/or qos 4499 **/ i40e_ndo_set_vf_port_vlan(struct net_device * netdev,int vf_id,u16 vlan_id,u8 qos,__be16 vlan_proto)4500 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id, 4501 u16 vlan_id, u8 qos, __be16 vlan_proto) 4502 { 4503 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT); 4504 struct i40e_netdev_priv *np = netdev_priv(netdev); 4505 bool allmulti = false, alluni = false; 4506 struct i40e_pf *pf = np->vsi->back; 4507 struct i40e_vsi *vsi; 4508 struct i40e_vf *vf; 4509 int ret = 0; 4510 4511 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4512 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4513 return -EAGAIN; 4514 } 4515 4516 /* validate the request */ 4517 ret = i40e_validate_vf(pf, vf_id); 4518 if (ret) 4519 goto error_pvid; 4520 4521 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) { 4522 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n"); 4523 ret = -EINVAL; 4524 goto error_pvid; 4525 } 4526 4527 if (vlan_proto != htons(ETH_P_8021Q)) { 4528 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n"); 4529 ret = -EPROTONOSUPPORT; 4530 goto error_pvid; 4531 } 4532 4533 vf = &pf->vf[vf_id]; 4534 if (!i40e_check_vf_init_timeout(vf)) { 4535 ret = -EAGAIN; 4536 goto error_pvid; 4537 } 4538 vsi = pf->vsi[vf->lan_vsi_idx]; 4539 4540 if (le16_to_cpu(vsi->info.pvid) == vlanprio) 4541 /* duplicate request, so just return success */ 4542 goto error_pvid; 4543 4544 i40e_vlan_stripping_enable(vsi); 4545 4546 /* Locked once because multiple functions below iterate list */ 4547 spin_lock_bh(&vsi->mac_filter_hash_lock); 4548 4549 /* Check for condition where there was already a port VLAN ID 4550 * filter set and now it is being deleted by setting it to zero. 4551 * Additionally check for the condition where there was a port 4552 * VLAN but now there is a new and different port VLAN being set. 4553 * Before deleting all the old VLAN filters we must add new ones 4554 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our 4555 * MAC addresses deleted. 4556 */ 4557 if ((!(vlan_id || qos) || 4558 vlanprio != le16_to_cpu(vsi->info.pvid)) && 4559 vsi->info.pvid) { 4560 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY); 4561 if (ret) { 4562 dev_info(&vsi->back->pdev->dev, 4563 "add VF VLAN failed, ret=%d aq_err=%d\n", ret, 4564 vsi->back->hw.aq.asq_last_status); 4565 spin_unlock_bh(&vsi->mac_filter_hash_lock); 4566 goto error_pvid; 4567 } 4568 } 4569 4570 if (vsi->info.pvid) { 4571 /* remove all filters on the old VLAN */ 4572 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) & 4573 VLAN_VID_MASK)); 4574 } 4575 4576 spin_unlock_bh(&vsi->mac_filter_hash_lock); 4577 4578 /* disable promisc modes in case they were enabled */ 4579 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, 4580 allmulti, alluni); 4581 if (ret) { 4582 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n"); 4583 goto error_pvid; 4584 } 4585 4586 if (vlan_id || qos) 4587 ret = i40e_vsi_add_pvid(vsi, vlanprio); 4588 else 4589 i40e_vsi_remove_pvid(vsi); 4590 spin_lock_bh(&vsi->mac_filter_hash_lock); 4591 4592 if (vlan_id) { 4593 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n", 4594 vlan_id, qos, vf_id); 4595 4596 /* add new VLAN filter for each MAC */ 4597 ret = i40e_add_vlan_all_mac(vsi, vlan_id); 4598 if (ret) { 4599 dev_info(&vsi->back->pdev->dev, 4600 "add VF VLAN failed, ret=%d aq_err=%d\n", ret, 4601 vsi->back->hw.aq.asq_last_status); 4602 spin_unlock_bh(&vsi->mac_filter_hash_lock); 4603 goto error_pvid; 4604 } 4605 4606 /* remove the previously added non-VLAN MAC filters */ 4607 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY); 4608 } 4609 4610 spin_unlock_bh(&vsi->mac_filter_hash_lock); 4611 4612 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states)) 4613 alluni = true; 4614 4615 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states)) 4616 allmulti = true; 4617 4618 /* Schedule the worker thread to take care of applying changes */ 4619 i40e_service_event_schedule(vsi->back); 4620 4621 if (ret) { 4622 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n"); 4623 goto error_pvid; 4624 } 4625 4626 /* The Port VLAN needs to be saved across resets the same as the 4627 * default LAN MAC address. 4628 */ 4629 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid); 4630 4631 i40e_vc_reset_vf(vf, true); 4632 /* During reset the VF got a new VSI, so refresh a pointer. */ 4633 vsi = pf->vsi[vf->lan_vsi_idx]; 4634 4635 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni); 4636 if (ret) { 4637 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n"); 4638 goto error_pvid; 4639 } 4640 4641 ret = 0; 4642 4643 error_pvid: 4644 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4645 return ret; 4646 } 4647 4648 /** 4649 * i40e_ndo_set_vf_bw 4650 * @netdev: network interface device structure 4651 * @vf_id: VF identifier 4652 * @min_tx_rate: Minimum Tx rate 4653 * @max_tx_rate: Maximum Tx rate 4654 * 4655 * configure VF Tx rate 4656 **/ i40e_ndo_set_vf_bw(struct net_device * netdev,int vf_id,int min_tx_rate,int max_tx_rate)4657 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate, 4658 int max_tx_rate) 4659 { 4660 struct i40e_netdev_priv *np = netdev_priv(netdev); 4661 struct i40e_pf *pf = np->vsi->back; 4662 struct i40e_vsi *vsi; 4663 struct i40e_vf *vf; 4664 int ret = 0; 4665 4666 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4667 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4668 return -EAGAIN; 4669 } 4670 4671 /* validate the request */ 4672 ret = i40e_validate_vf(pf, vf_id); 4673 if (ret) 4674 goto error; 4675 4676 if (min_tx_rate) { 4677 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n", 4678 min_tx_rate, vf_id); 4679 ret = -EINVAL; 4680 goto error; 4681 } 4682 4683 vf = &pf->vf[vf_id]; 4684 if (!i40e_check_vf_init_timeout(vf)) { 4685 ret = -EAGAIN; 4686 goto error; 4687 } 4688 vsi = pf->vsi[vf->lan_vsi_idx]; 4689 4690 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate); 4691 if (ret) 4692 goto error; 4693 4694 vf->tx_rate = max_tx_rate; 4695 error: 4696 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4697 return ret; 4698 } 4699 4700 /** 4701 * i40e_ndo_get_vf_config 4702 * @netdev: network interface device structure 4703 * @vf_id: VF identifier 4704 * @ivi: VF configuration structure 4705 * 4706 * return VF configuration 4707 **/ i40e_ndo_get_vf_config(struct net_device * netdev,int vf_id,struct ifla_vf_info * ivi)4708 int i40e_ndo_get_vf_config(struct net_device *netdev, 4709 int vf_id, struct ifla_vf_info *ivi) 4710 { 4711 struct i40e_netdev_priv *np = netdev_priv(netdev); 4712 struct i40e_vsi *vsi = np->vsi; 4713 struct i40e_pf *pf = vsi->back; 4714 struct i40e_vf *vf; 4715 int ret = 0; 4716 4717 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4718 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4719 return -EAGAIN; 4720 } 4721 4722 /* validate the request */ 4723 ret = i40e_validate_vf(pf, vf_id); 4724 if (ret) 4725 goto error_param; 4726 4727 vf = &pf->vf[vf_id]; 4728 /* first vsi is always the LAN vsi */ 4729 vsi = pf->vsi[vf->lan_vsi_idx]; 4730 if (!vsi) { 4731 ret = -ENOENT; 4732 goto error_param; 4733 } 4734 4735 ivi->vf = vf_id; 4736 4737 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr); 4738 4739 ivi->max_tx_rate = vf->tx_rate; 4740 ivi->min_tx_rate = 0; 4741 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK; 4742 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >> 4743 I40E_VLAN_PRIORITY_SHIFT; 4744 if (vf->link_forced == false) 4745 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO; 4746 else if (vf->link_up == true) 4747 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE; 4748 else 4749 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE; 4750 ivi->spoofchk = vf->spoofchk; 4751 ivi->trusted = vf->trusted; 4752 ret = 0; 4753 4754 error_param: 4755 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4756 return ret; 4757 } 4758 4759 /** 4760 * i40e_ndo_set_vf_link_state 4761 * @netdev: network interface device structure 4762 * @vf_id: VF identifier 4763 * @link: required link state 4764 * 4765 * Set the link state of a specified VF, regardless of physical link state 4766 **/ i40e_ndo_set_vf_link_state(struct net_device * netdev,int vf_id,int link)4767 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link) 4768 { 4769 struct i40e_netdev_priv *np = netdev_priv(netdev); 4770 struct i40e_pf *pf = np->vsi->back; 4771 struct i40e_link_status *ls = &pf->hw.phy.link_info; 4772 struct virtchnl_pf_event pfe; 4773 struct i40e_hw *hw = &pf->hw; 4774 struct i40e_vsi *vsi; 4775 unsigned long q_map; 4776 struct i40e_vf *vf; 4777 int abs_vf_id; 4778 int ret = 0; 4779 int tmp; 4780 4781 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4782 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4783 return -EAGAIN; 4784 } 4785 4786 /* validate the request */ 4787 if (vf_id >= pf->num_alloc_vfs) { 4788 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); 4789 ret = -EINVAL; 4790 goto error_out; 4791 } 4792 4793 vf = &pf->vf[vf_id]; 4794 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id; 4795 4796 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE; 4797 pfe.severity = PF_EVENT_SEVERITY_INFO; 4798 4799 switch (link) { 4800 case IFLA_VF_LINK_STATE_AUTO: 4801 vf->link_forced = false; 4802 vf->is_disabled_from_host = false; 4803 /* reset needed to reinit VF resources */ 4804 i40e_vc_reset_vf(vf, true); 4805 i40e_set_vf_link_state(vf, &pfe, ls); 4806 break; 4807 case IFLA_VF_LINK_STATE_ENABLE: 4808 vf->link_forced = true; 4809 vf->link_up = true; 4810 vf->is_disabled_from_host = false; 4811 /* reset needed to reinit VF resources */ 4812 i40e_vc_reset_vf(vf, true); 4813 i40e_set_vf_link_state(vf, &pfe, ls); 4814 break; 4815 case IFLA_VF_LINK_STATE_DISABLE: 4816 vf->link_forced = true; 4817 vf->link_up = false; 4818 i40e_set_vf_link_state(vf, &pfe, ls); 4819 4820 vsi = pf->vsi[vf->lan_vsi_idx]; 4821 q_map = BIT(vsi->num_queue_pairs) - 1; 4822 4823 vf->is_disabled_from_host = true; 4824 4825 /* Try to stop both Tx&Rx rings even if one of the calls fails 4826 * to ensure we stop the rings even in case of errors. 4827 * If any of them returns with an error then the first 4828 * error that occurred will be returned. 4829 */ 4830 tmp = i40e_ctrl_vf_tx_rings(vsi, q_map, false); 4831 ret = i40e_ctrl_vf_rx_rings(vsi, q_map, false); 4832 4833 ret = tmp ? tmp : ret; 4834 break; 4835 default: 4836 ret = -EINVAL; 4837 goto error_out; 4838 } 4839 /* Notify the VF of its new link state */ 4840 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT, 4841 0, (u8 *)&pfe, sizeof(pfe), NULL); 4842 4843 error_out: 4844 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4845 return ret; 4846 } 4847 4848 /** 4849 * i40e_ndo_set_vf_spoofchk 4850 * @netdev: network interface device structure 4851 * @vf_id: VF identifier 4852 * @enable: flag to enable or disable feature 4853 * 4854 * Enable or disable VF spoof checking 4855 **/ i40e_ndo_set_vf_spoofchk(struct net_device * netdev,int vf_id,bool enable)4856 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable) 4857 { 4858 struct i40e_netdev_priv *np = netdev_priv(netdev); 4859 struct i40e_vsi *vsi = np->vsi; 4860 struct i40e_pf *pf = vsi->back; 4861 struct i40e_vsi_context ctxt; 4862 struct i40e_hw *hw = &pf->hw; 4863 struct i40e_vf *vf; 4864 int ret = 0; 4865 4866 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4867 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4868 return -EAGAIN; 4869 } 4870 4871 /* validate the request */ 4872 if (vf_id >= pf->num_alloc_vfs) { 4873 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); 4874 ret = -EINVAL; 4875 goto out; 4876 } 4877 4878 vf = &(pf->vf[vf_id]); 4879 if (!i40e_check_vf_init_timeout(vf)) { 4880 ret = -EAGAIN; 4881 goto out; 4882 } 4883 4884 if (enable == vf->spoofchk) 4885 goto out; 4886 4887 vf->spoofchk = enable; 4888 memset(&ctxt, 0, sizeof(ctxt)); 4889 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid; 4890 ctxt.pf_num = pf->hw.pf_id; 4891 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID); 4892 if (enable) 4893 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK | 4894 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK); 4895 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL); 4896 if (ret) { 4897 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n", 4898 ret); 4899 ret = -EIO; 4900 } 4901 out: 4902 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4903 return ret; 4904 } 4905 4906 /** 4907 * i40e_ndo_set_vf_trust 4908 * @netdev: network interface device structure of the pf 4909 * @vf_id: VF identifier 4910 * @setting: trust setting 4911 * 4912 * Enable or disable VF trust setting 4913 **/ i40e_ndo_set_vf_trust(struct net_device * netdev,int vf_id,bool setting)4914 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting) 4915 { 4916 struct i40e_netdev_priv *np = netdev_priv(netdev); 4917 struct i40e_pf *pf = np->vsi->back; 4918 struct i40e_vf *vf; 4919 int ret = 0; 4920 4921 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4922 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4923 return -EAGAIN; 4924 } 4925 4926 /* validate the request */ 4927 if (vf_id >= pf->num_alloc_vfs) { 4928 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); 4929 ret = -EINVAL; 4930 goto out; 4931 } 4932 4933 if (pf->flags & I40E_FLAG_MFP_ENABLED) { 4934 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n"); 4935 ret = -EINVAL; 4936 goto out; 4937 } 4938 4939 vf = &pf->vf[vf_id]; 4940 4941 if (setting == vf->trusted) 4942 goto out; 4943 4944 vf->trusted = setting; 4945 4946 /* request PF to sync mac/vlan filters for the VF */ 4947 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state); 4948 pf->vsi[vf->lan_vsi_idx]->flags |= I40E_VSI_FLAG_FILTER_CHANGED; 4949 4950 i40e_vc_reset_vf(vf, true); 4951 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n", 4952 vf_id, setting ? "" : "un"); 4953 4954 if (vf->adq_enabled) { 4955 if (!vf->trusted) { 4956 dev_info(&pf->pdev->dev, 4957 "VF %u no longer Trusted, deleting all cloud filters\n", 4958 vf_id); 4959 i40e_del_all_cloud_filters(vf); 4960 } 4961 } 4962 4963 out: 4964 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4965 return ret; 4966 } 4967 4968 /** 4969 * i40e_get_vf_stats - populate some stats for the VF 4970 * @netdev: the netdev of the PF 4971 * @vf_id: the host OS identifier (0-127) 4972 * @vf_stats: pointer to the OS memory to be initialized 4973 */ i40e_get_vf_stats(struct net_device * netdev,int vf_id,struct ifla_vf_stats * vf_stats)4974 int i40e_get_vf_stats(struct net_device *netdev, int vf_id, 4975 struct ifla_vf_stats *vf_stats) 4976 { 4977 struct i40e_netdev_priv *np = netdev_priv(netdev); 4978 struct i40e_pf *pf = np->vsi->back; 4979 struct i40e_eth_stats *stats; 4980 struct i40e_vsi *vsi; 4981 struct i40e_vf *vf; 4982 4983 /* validate the request */ 4984 if (i40e_validate_vf(pf, vf_id)) 4985 return -EINVAL; 4986 4987 vf = &pf->vf[vf_id]; 4988 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) { 4989 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id); 4990 return -EBUSY; 4991 } 4992 4993 vsi = pf->vsi[vf->lan_vsi_idx]; 4994 if (!vsi) 4995 return -EINVAL; 4996 4997 i40e_update_eth_stats(vsi); 4998 stats = &vsi->eth_stats; 4999 5000 memset(vf_stats, 0, sizeof(*vf_stats)); 5001 5002 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast + 5003 stats->rx_multicast; 5004 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast + 5005 stats->tx_multicast; 5006 vf_stats->rx_bytes = stats->rx_bytes; 5007 vf_stats->tx_bytes = stats->tx_bytes; 5008 vf_stats->broadcast = stats->rx_broadcast; 5009 vf_stats->multicast = stats->rx_multicast; 5010 vf_stats->rx_dropped = stats->rx_discards; 5011 vf_stats->tx_dropped = stats->tx_discards; 5012 5013 return 0; 5014 } 5015