1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2013 - 2018 Intel Corporation. */ 3 4 #include "i40e.h" 5 6 /*********************notification routines***********************/ 7 8 /** 9 * i40e_vc_vf_broadcast 10 * @pf: pointer to the PF structure 11 * @v_opcode: operation code 12 * @v_retval: return value 13 * @msg: pointer to the msg buffer 14 * @msglen: msg length 15 * 16 * send a message to all VFs on a given PF 17 **/ 18 static void i40e_vc_vf_broadcast(struct i40e_pf *pf, 19 enum virtchnl_ops v_opcode, 20 i40e_status v_retval, u8 *msg, 21 u16 msglen) 22 { 23 struct i40e_hw *hw = &pf->hw; 24 struct i40e_vf *vf = pf->vf; 25 int i; 26 27 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) { 28 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id; 29 /* Not all vfs are enabled so skip the ones that are not */ 30 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) && 31 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) 32 continue; 33 34 /* Ignore return value on purpose - a given VF may fail, but 35 * we need to keep going and send to all of them 36 */ 37 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval, 38 msg, msglen, NULL); 39 } 40 } 41 42 /** 43 * i40e_vc_link_speed2mbps 44 * converts i40e_aq_link_speed to integer value of Mbps 45 * @link_speed: the speed to convert 46 * 47 * return the speed as direct value of Mbps. 48 **/ 49 static u32 50 i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed) 51 { 52 switch (link_speed) { 53 case I40E_LINK_SPEED_100MB: 54 return SPEED_100; 55 case I40E_LINK_SPEED_1GB: 56 return SPEED_1000; 57 case I40E_LINK_SPEED_2_5GB: 58 return SPEED_2500; 59 case I40E_LINK_SPEED_5GB: 60 return SPEED_5000; 61 case I40E_LINK_SPEED_10GB: 62 return SPEED_10000; 63 case I40E_LINK_SPEED_20GB: 64 return SPEED_20000; 65 case I40E_LINK_SPEED_25GB: 66 return SPEED_25000; 67 case I40E_LINK_SPEED_40GB: 68 return SPEED_40000; 69 case I40E_LINK_SPEED_UNKNOWN: 70 return SPEED_UNKNOWN; 71 } 72 return SPEED_UNKNOWN; 73 } 74 75 /** 76 * i40e_set_vf_link_state 77 * @vf: pointer to the VF structure 78 * @pfe: pointer to PF event structure 79 * @ls: pointer to link status structure 80 * 81 * set a link state on a single vf 82 **/ 83 static void i40e_set_vf_link_state(struct i40e_vf *vf, 84 struct virtchnl_pf_event *pfe, struct i40e_link_status *ls) 85 { 86 u8 link_status = ls->link_info & I40E_AQ_LINK_UP; 87 88 if (vf->link_forced) 89 link_status = vf->link_up; 90 91 if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) { 92 pfe->event_data.link_event_adv.link_speed = link_status ? 93 i40e_vc_link_speed2mbps(ls->link_speed) : 0; 94 pfe->event_data.link_event_adv.link_status = link_status; 95 } else { 96 pfe->event_data.link_event.link_speed = link_status ? 97 i40e_virtchnl_link_speed(ls->link_speed) : 0; 98 pfe->event_data.link_event.link_status = link_status; 99 } 100 } 101 102 /** 103 * i40e_vc_notify_vf_link_state 104 * @vf: pointer to the VF structure 105 * 106 * send a link status message to a single VF 107 **/ 108 static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf) 109 { 110 struct virtchnl_pf_event pfe; 111 struct i40e_pf *pf = vf->pf; 112 struct i40e_hw *hw = &pf->hw; 113 struct i40e_link_status *ls = &pf->hw.phy.link_info; 114 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id; 115 116 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE; 117 pfe.severity = PF_EVENT_SEVERITY_INFO; 118 119 i40e_set_vf_link_state(vf, &pfe, ls); 120 121 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT, 122 0, (u8 *)&pfe, sizeof(pfe), NULL); 123 } 124 125 /** 126 * i40e_vc_notify_link_state 127 * @pf: pointer to the PF structure 128 * 129 * send a link status message to all VFs on a given PF 130 **/ 131 void i40e_vc_notify_link_state(struct i40e_pf *pf) 132 { 133 int i; 134 135 for (i = 0; i < pf->num_alloc_vfs; i++) 136 i40e_vc_notify_vf_link_state(&pf->vf[i]); 137 } 138 139 /** 140 * i40e_vc_notify_reset 141 * @pf: pointer to the PF structure 142 * 143 * indicate a pending reset to all VFs on a given PF 144 **/ 145 void i40e_vc_notify_reset(struct i40e_pf *pf) 146 { 147 struct virtchnl_pf_event pfe; 148 149 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING; 150 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM; 151 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0, 152 (u8 *)&pfe, sizeof(struct virtchnl_pf_event)); 153 } 154 155 /** 156 * i40e_vc_notify_vf_reset 157 * @vf: pointer to the VF structure 158 * 159 * indicate a pending reset to the given VF 160 **/ 161 void i40e_vc_notify_vf_reset(struct i40e_vf *vf) 162 { 163 struct virtchnl_pf_event pfe; 164 int abs_vf_id; 165 166 /* validate the request */ 167 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs) 168 return; 169 170 /* verify if the VF is in either init or active before proceeding */ 171 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) && 172 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) 173 return; 174 175 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id; 176 177 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING; 178 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM; 179 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT, 180 0, (u8 *)&pfe, 181 sizeof(struct virtchnl_pf_event), NULL); 182 } 183 /***********************misc routines*****************************/ 184 185 /** 186 * i40e_vc_reset_vf 187 * @vf: pointer to the VF info 188 * @notify_vf: notify vf about reset or not 189 * Reset VF handler. 190 **/ 191 static void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf) 192 { 193 struct i40e_pf *pf = vf->pf; 194 int i; 195 196 if (notify_vf) 197 i40e_vc_notify_vf_reset(vf); 198 199 /* We want to ensure that an actual reset occurs initiated after this 200 * function was called. However, we do not want to wait forever, so 201 * we'll give a reasonable time and print a message if we failed to 202 * ensure a reset. 203 */ 204 for (i = 0; i < 20; i++) { 205 /* If PF is in VFs releasing state reset VF is impossible, 206 * so leave it. 207 */ 208 if (test_bit(__I40E_VFS_RELEASING, pf->state)) 209 return; 210 if (i40e_reset_vf(vf, false)) 211 return; 212 usleep_range(10000, 20000); 213 } 214 215 if (notify_vf) 216 dev_warn(&vf->pf->pdev->dev, 217 "Failed to initiate reset for VF %d after 200 milliseconds\n", 218 vf->vf_id); 219 else 220 dev_dbg(&vf->pf->pdev->dev, 221 "Failed to initiate reset for VF %d after 200 milliseconds\n", 222 vf->vf_id); 223 } 224 225 /** 226 * i40e_vc_isvalid_vsi_id 227 * @vf: pointer to the VF info 228 * @vsi_id: VF relative VSI id 229 * 230 * check for the valid VSI id 231 **/ 232 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id) 233 { 234 struct i40e_pf *pf = vf->pf; 235 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id); 236 237 return (vsi && (vsi->vf_id == vf->vf_id)); 238 } 239 240 /** 241 * i40e_vc_isvalid_queue_id 242 * @vf: pointer to the VF info 243 * @vsi_id: vsi id 244 * @qid: vsi relative queue id 245 * 246 * check for the valid queue id 247 **/ 248 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id, 249 u16 qid) 250 { 251 struct i40e_pf *pf = vf->pf; 252 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id); 253 254 return (vsi && (qid < vsi->alloc_queue_pairs)); 255 } 256 257 /** 258 * i40e_vc_isvalid_vector_id 259 * @vf: pointer to the VF info 260 * @vector_id: VF relative vector id 261 * 262 * check for the valid vector id 263 **/ 264 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id) 265 { 266 struct i40e_pf *pf = vf->pf; 267 268 return vector_id < pf->hw.func_caps.num_msix_vectors_vf; 269 } 270 271 /***********************vf resource mgmt routines*****************/ 272 273 /** 274 * i40e_vc_get_pf_queue_id 275 * @vf: pointer to the VF info 276 * @vsi_id: id of VSI as provided by the FW 277 * @vsi_queue_id: vsi relative queue id 278 * 279 * return PF relative queue id 280 **/ 281 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id, 282 u8 vsi_queue_id) 283 { 284 struct i40e_pf *pf = vf->pf; 285 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id); 286 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST; 287 288 if (!vsi) 289 return pf_queue_id; 290 291 if (le16_to_cpu(vsi->info.mapping_flags) & 292 I40E_AQ_VSI_QUE_MAP_NONCONTIG) 293 pf_queue_id = 294 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]); 295 else 296 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) + 297 vsi_queue_id; 298 299 return pf_queue_id; 300 } 301 302 /** 303 * i40e_get_real_pf_qid 304 * @vf: pointer to the VF info 305 * @vsi_id: vsi id 306 * @queue_id: queue number 307 * 308 * wrapper function to get pf_queue_id handling ADq code as well 309 **/ 310 static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id) 311 { 312 int i; 313 314 if (vf->adq_enabled) { 315 /* Although VF considers all the queues(can be 1 to 16) as its 316 * own but they may actually belong to different VSIs(up to 4). 317 * We need to find which queues belongs to which VSI. 318 */ 319 for (i = 0; i < vf->num_tc; i++) { 320 if (queue_id < vf->ch[i].num_qps) { 321 vsi_id = vf->ch[i].vsi_id; 322 break; 323 } 324 /* find right queue id which is relative to a 325 * given VSI. 326 */ 327 queue_id -= vf->ch[i].num_qps; 328 } 329 } 330 331 return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id); 332 } 333 334 /** 335 * i40e_config_irq_link_list 336 * @vf: pointer to the VF info 337 * @vsi_id: id of VSI as given by the FW 338 * @vecmap: irq map info 339 * 340 * configure irq link list from the map 341 **/ 342 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id, 343 struct virtchnl_vector_map *vecmap) 344 { 345 unsigned long linklistmap = 0, tempmap; 346 struct i40e_pf *pf = vf->pf; 347 struct i40e_hw *hw = &pf->hw; 348 u16 vsi_queue_id, pf_queue_id; 349 enum i40e_queue_type qtype; 350 u16 next_q, vector_id, size; 351 u32 reg, reg_idx; 352 u16 itr_idx = 0; 353 354 vector_id = vecmap->vector_id; 355 /* setup the head */ 356 if (0 == vector_id) 357 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id); 358 else 359 reg_idx = I40E_VPINT_LNKLSTN( 360 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) + 361 (vector_id - 1)); 362 363 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) { 364 /* Special case - No queues mapped on this vector */ 365 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK); 366 goto irq_list_done; 367 } 368 tempmap = vecmap->rxq_map; 369 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) { 370 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES * 371 vsi_queue_id)); 372 } 373 374 tempmap = vecmap->txq_map; 375 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) { 376 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES * 377 vsi_queue_id + 1)); 378 } 379 380 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES; 381 next_q = find_first_bit(&linklistmap, size); 382 if (unlikely(next_q == size)) 383 goto irq_list_done; 384 385 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES; 386 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES; 387 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id); 388 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id); 389 390 wr32(hw, reg_idx, reg); 391 392 while (next_q < size) { 393 switch (qtype) { 394 case I40E_QUEUE_TYPE_RX: 395 reg_idx = I40E_QINT_RQCTL(pf_queue_id); 396 itr_idx = vecmap->rxitr_idx; 397 break; 398 case I40E_QUEUE_TYPE_TX: 399 reg_idx = I40E_QINT_TQCTL(pf_queue_id); 400 itr_idx = vecmap->txitr_idx; 401 break; 402 default: 403 break; 404 } 405 406 next_q = find_next_bit(&linklistmap, size, next_q + 1); 407 if (next_q < size) { 408 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES; 409 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES; 410 pf_queue_id = i40e_get_real_pf_qid(vf, 411 vsi_id, 412 vsi_queue_id); 413 } else { 414 pf_queue_id = I40E_QUEUE_END_OF_LIST; 415 qtype = 0; 416 } 417 418 /* format for the RQCTL & TQCTL regs is same */ 419 reg = (vector_id) | 420 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) | 421 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) | 422 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) | 423 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT); 424 wr32(hw, reg_idx, reg); 425 } 426 427 /* if the vf is running in polling mode and using interrupt zero, 428 * need to disable auto-mask on enabling zero interrupt for VFs. 429 */ 430 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) && 431 (vector_id == 0)) { 432 reg = rd32(hw, I40E_GLINT_CTL); 433 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) { 434 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK; 435 wr32(hw, I40E_GLINT_CTL, reg); 436 } 437 } 438 439 irq_list_done: 440 i40e_flush(hw); 441 } 442 443 /** 444 * i40e_release_iwarp_qvlist 445 * @vf: pointer to the VF. 446 * 447 **/ 448 static void i40e_release_iwarp_qvlist(struct i40e_vf *vf) 449 { 450 struct i40e_pf *pf = vf->pf; 451 struct virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info; 452 u32 msix_vf; 453 u32 i; 454 455 if (!vf->qvlist_info) 456 return; 457 458 msix_vf = pf->hw.func_caps.num_msix_vectors_vf; 459 for (i = 0; i < qvlist_info->num_vectors; i++) { 460 struct virtchnl_iwarp_qv_info *qv_info; 461 u32 next_q_index, next_q_type; 462 struct i40e_hw *hw = &pf->hw; 463 u32 v_idx, reg_idx, reg; 464 465 qv_info = &qvlist_info->qv_info[i]; 466 if (!qv_info) 467 continue; 468 v_idx = qv_info->v_idx; 469 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) { 470 /* Figure out the queue after CEQ and make that the 471 * first queue. 472 */ 473 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx; 474 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx)); 475 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK) 476 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT; 477 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK) 478 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT; 479 480 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1); 481 reg = (next_q_index & 482 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) | 483 (next_q_type << 484 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT); 485 486 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg); 487 } 488 } 489 kfree(vf->qvlist_info); 490 vf->qvlist_info = NULL; 491 } 492 493 /** 494 * i40e_config_iwarp_qvlist 495 * @vf: pointer to the VF info 496 * @qvlist_info: queue and vector list 497 * 498 * Return 0 on success or < 0 on error 499 **/ 500 static int i40e_config_iwarp_qvlist(struct i40e_vf *vf, 501 struct virtchnl_iwarp_qvlist_info *qvlist_info) 502 { 503 struct i40e_pf *pf = vf->pf; 504 struct i40e_hw *hw = &pf->hw; 505 struct virtchnl_iwarp_qv_info *qv_info; 506 u32 v_idx, i, reg_idx, reg; 507 u32 next_q_idx, next_q_type; 508 u32 msix_vf; 509 int ret = 0; 510 511 msix_vf = pf->hw.func_caps.num_msix_vectors_vf; 512 513 if (qvlist_info->num_vectors > msix_vf) { 514 dev_warn(&pf->pdev->dev, 515 "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n", 516 qvlist_info->num_vectors, 517 msix_vf); 518 ret = -EINVAL; 519 goto err_out; 520 } 521 522 kfree(vf->qvlist_info); 523 vf->qvlist_info = kzalloc(struct_size(vf->qvlist_info, qv_info, 524 qvlist_info->num_vectors - 1), 525 GFP_KERNEL); 526 if (!vf->qvlist_info) { 527 ret = -ENOMEM; 528 goto err_out; 529 } 530 vf->qvlist_info->num_vectors = qvlist_info->num_vectors; 531 532 msix_vf = pf->hw.func_caps.num_msix_vectors_vf; 533 for (i = 0; i < qvlist_info->num_vectors; i++) { 534 qv_info = &qvlist_info->qv_info[i]; 535 if (!qv_info) 536 continue; 537 538 /* Validate vector id belongs to this vf */ 539 if (!i40e_vc_isvalid_vector_id(vf, qv_info->v_idx)) { 540 ret = -EINVAL; 541 goto err_free; 542 } 543 544 v_idx = qv_info->v_idx; 545 546 vf->qvlist_info->qv_info[i] = *qv_info; 547 548 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1); 549 /* We might be sharing the interrupt, so get the first queue 550 * index and type, push it down the list by adding the new 551 * queue on top. Also link it with the new queue in CEQCTL. 552 */ 553 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx)); 554 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >> 555 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT); 556 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >> 557 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT); 558 559 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) { 560 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx; 561 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK | 562 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) | 563 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) | 564 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) | 565 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT)); 566 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg); 567 568 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1); 569 reg = (qv_info->ceq_idx & 570 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) | 571 (I40E_QUEUE_TYPE_PE_CEQ << 572 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT); 573 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg); 574 } 575 576 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) { 577 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK | 578 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) | 579 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT)); 580 581 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg); 582 } 583 } 584 585 return 0; 586 err_free: 587 kfree(vf->qvlist_info); 588 vf->qvlist_info = NULL; 589 err_out: 590 return ret; 591 } 592 593 /** 594 * i40e_config_vsi_tx_queue 595 * @vf: pointer to the VF info 596 * @vsi_id: id of VSI as provided by the FW 597 * @vsi_queue_id: vsi relative queue index 598 * @info: config. info 599 * 600 * configure tx queue 601 **/ 602 static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id, 603 u16 vsi_queue_id, 604 struct virtchnl_txq_info *info) 605 { 606 struct i40e_pf *pf = vf->pf; 607 struct i40e_hw *hw = &pf->hw; 608 struct i40e_hmc_obj_txq tx_ctx; 609 struct i40e_vsi *vsi; 610 u16 pf_queue_id; 611 u32 qtx_ctl; 612 int ret = 0; 613 614 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) { 615 ret = -ENOENT; 616 goto error_context; 617 } 618 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id); 619 vsi = i40e_find_vsi_from_id(pf, vsi_id); 620 if (!vsi) { 621 ret = -ENOENT; 622 goto error_context; 623 } 624 625 /* clear the context structure first */ 626 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq)); 627 628 /* only set the required fields */ 629 tx_ctx.base = info->dma_ring_addr / 128; 630 tx_ctx.qlen = info->ring_len; 631 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]); 632 tx_ctx.rdylist_act = 0; 633 tx_ctx.head_wb_ena = info->headwb_enabled; 634 tx_ctx.head_wb_addr = info->dma_headwb_addr; 635 636 /* clear the context in the HMC */ 637 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id); 638 if (ret) { 639 dev_err(&pf->pdev->dev, 640 "Failed to clear VF LAN Tx queue context %d, error: %d\n", 641 pf_queue_id, ret); 642 ret = -ENOENT; 643 goto error_context; 644 } 645 646 /* set the context in the HMC */ 647 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx); 648 if (ret) { 649 dev_err(&pf->pdev->dev, 650 "Failed to set VF LAN Tx queue context %d error: %d\n", 651 pf_queue_id, ret); 652 ret = -ENOENT; 653 goto error_context; 654 } 655 656 /* associate this queue with the PCI VF function */ 657 qtx_ctl = I40E_QTX_CTL_VF_QUEUE; 658 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) 659 & I40E_QTX_CTL_PF_INDX_MASK); 660 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id) 661 << I40E_QTX_CTL_VFVM_INDX_SHIFT) 662 & I40E_QTX_CTL_VFVM_INDX_MASK); 663 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl); 664 i40e_flush(hw); 665 666 error_context: 667 return ret; 668 } 669 670 /** 671 * i40e_config_vsi_rx_queue 672 * @vf: pointer to the VF info 673 * @vsi_id: id of VSI as provided by the FW 674 * @vsi_queue_id: vsi relative queue index 675 * @info: config. info 676 * 677 * configure rx queue 678 **/ 679 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id, 680 u16 vsi_queue_id, 681 struct virtchnl_rxq_info *info) 682 { 683 u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id); 684 struct i40e_pf *pf = vf->pf; 685 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx]; 686 struct i40e_hw *hw = &pf->hw; 687 struct i40e_hmc_obj_rxq rx_ctx; 688 int ret = 0; 689 690 /* clear the context structure first */ 691 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq)); 692 693 /* only set the required fields */ 694 rx_ctx.base = info->dma_ring_addr / 128; 695 rx_ctx.qlen = info->ring_len; 696 697 if (info->splithdr_enabled) { 698 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 | 699 I40E_RX_SPLIT_IP | 700 I40E_RX_SPLIT_TCP_UDP | 701 I40E_RX_SPLIT_SCTP; 702 /* header length validation */ 703 if (info->hdr_size > ((2 * 1024) - 64)) { 704 ret = -EINVAL; 705 goto error_param; 706 } 707 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT; 708 709 /* set split mode 10b */ 710 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT; 711 } 712 713 /* databuffer length validation */ 714 if (info->databuffer_size > ((16 * 1024) - 128)) { 715 ret = -EINVAL; 716 goto error_param; 717 } 718 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT; 719 720 /* max pkt. length validation */ 721 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) { 722 ret = -EINVAL; 723 goto error_param; 724 } 725 rx_ctx.rxmax = info->max_pkt_size; 726 727 /* if port VLAN is configured increase the max packet size */ 728 if (vsi->info.pvid) 729 rx_ctx.rxmax += VLAN_HLEN; 730 731 /* enable 32bytes desc always */ 732 rx_ctx.dsize = 1; 733 734 /* default values */ 735 rx_ctx.lrxqthresh = 1; 736 rx_ctx.crcstrip = 1; 737 rx_ctx.prefena = 1; 738 rx_ctx.l2tsel = 1; 739 740 /* clear the context in the HMC */ 741 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id); 742 if (ret) { 743 dev_err(&pf->pdev->dev, 744 "Failed to clear VF LAN Rx queue context %d, error: %d\n", 745 pf_queue_id, ret); 746 ret = -ENOENT; 747 goto error_param; 748 } 749 750 /* set the context in the HMC */ 751 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx); 752 if (ret) { 753 dev_err(&pf->pdev->dev, 754 "Failed to set VF LAN Rx queue context %d error: %d\n", 755 pf_queue_id, ret); 756 ret = -ENOENT; 757 goto error_param; 758 } 759 760 error_param: 761 return ret; 762 } 763 764 /** 765 * i40e_alloc_vsi_res 766 * @vf: pointer to the VF info 767 * @idx: VSI index, applies only for ADq mode, zero otherwise 768 * 769 * alloc VF vsi context & resources 770 **/ 771 static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx) 772 { 773 struct i40e_mac_filter *f = NULL; 774 struct i40e_pf *pf = vf->pf; 775 struct i40e_vsi *vsi; 776 u64 max_tx_rate = 0; 777 int ret = 0; 778 779 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, pf->vsi[pf->lan_vsi]->seid, 780 vf->vf_id); 781 782 if (!vsi) { 783 dev_err(&pf->pdev->dev, 784 "add vsi failed for VF %d, aq_err %d\n", 785 vf->vf_id, pf->hw.aq.asq_last_status); 786 ret = -ENOENT; 787 goto error_alloc_vsi_res; 788 } 789 790 if (!idx) { 791 u64 hena = i40e_pf_get_default_rss_hena(pf); 792 u8 broadcast[ETH_ALEN]; 793 794 vf->lan_vsi_idx = vsi->idx; 795 vf->lan_vsi_id = vsi->id; 796 /* If the port VLAN has been configured and then the 797 * VF driver was removed then the VSI port VLAN 798 * configuration was destroyed. Check if there is 799 * a port VLAN and restore the VSI configuration if 800 * needed. 801 */ 802 if (vf->port_vlan_id) 803 i40e_vsi_add_pvid(vsi, vf->port_vlan_id); 804 805 spin_lock_bh(&vsi->mac_filter_hash_lock); 806 if (is_valid_ether_addr(vf->default_lan_addr.addr)) { 807 f = i40e_add_mac_filter(vsi, 808 vf->default_lan_addr.addr); 809 if (!f) 810 dev_info(&pf->pdev->dev, 811 "Could not add MAC filter %pM for VF %d\n", 812 vf->default_lan_addr.addr, vf->vf_id); 813 } 814 eth_broadcast_addr(broadcast); 815 f = i40e_add_mac_filter(vsi, broadcast); 816 if (!f) 817 dev_info(&pf->pdev->dev, 818 "Could not allocate VF broadcast filter\n"); 819 spin_unlock_bh(&vsi->mac_filter_hash_lock); 820 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena); 821 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32)); 822 /* program mac filter only for VF VSI */ 823 ret = i40e_sync_vsi_filters(vsi); 824 if (ret) 825 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n"); 826 } 827 828 /* storing VSI index and id for ADq and don't apply the mac filter */ 829 if (vf->adq_enabled) { 830 vf->ch[idx].vsi_idx = vsi->idx; 831 vf->ch[idx].vsi_id = vsi->id; 832 } 833 834 /* Set VF bandwidth if specified */ 835 if (vf->tx_rate) { 836 max_tx_rate = vf->tx_rate; 837 } else if (vf->ch[idx].max_tx_rate) { 838 max_tx_rate = vf->ch[idx].max_tx_rate; 839 } 840 841 if (max_tx_rate) { 842 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR); 843 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid, 844 max_tx_rate, 0, NULL); 845 if (ret) 846 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n", 847 vf->vf_id, ret); 848 } 849 850 error_alloc_vsi_res: 851 return ret; 852 } 853 854 /** 855 * i40e_map_pf_queues_to_vsi 856 * @vf: pointer to the VF info 857 * 858 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This 859 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI. 860 **/ 861 static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf) 862 { 863 struct i40e_pf *pf = vf->pf; 864 struct i40e_hw *hw = &pf->hw; 865 u32 reg, num_tc = 1; /* VF has at least one traffic class */ 866 u16 vsi_id, qps; 867 int i, j; 868 869 if (vf->adq_enabled) 870 num_tc = vf->num_tc; 871 872 for (i = 0; i < num_tc; i++) { 873 if (vf->adq_enabled) { 874 qps = vf->ch[i].num_qps; 875 vsi_id = vf->ch[i].vsi_id; 876 } else { 877 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; 878 vsi_id = vf->lan_vsi_id; 879 } 880 881 for (j = 0; j < 7; j++) { 882 if (j * 2 >= qps) { 883 /* end of list */ 884 reg = 0x07FF07FF; 885 } else { 886 u16 qid = i40e_vc_get_pf_queue_id(vf, 887 vsi_id, 888 j * 2); 889 reg = qid; 890 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, 891 (j * 2) + 1); 892 reg |= qid << 16; 893 } 894 i40e_write_rx_ctl(hw, 895 I40E_VSILAN_QTABLE(j, vsi_id), 896 reg); 897 } 898 } 899 } 900 901 /** 902 * i40e_map_pf_to_vf_queues 903 * @vf: pointer to the VF info 904 * 905 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This 906 * function takes care of the second part VPLAN_QTABLE & completes VF mappings. 907 **/ 908 static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf) 909 { 910 struct i40e_pf *pf = vf->pf; 911 struct i40e_hw *hw = &pf->hw; 912 u32 reg, total_qps = 0; 913 u32 qps, num_tc = 1; /* VF has at least one traffic class */ 914 u16 vsi_id, qid; 915 int i, j; 916 917 if (vf->adq_enabled) 918 num_tc = vf->num_tc; 919 920 for (i = 0; i < num_tc; i++) { 921 if (vf->adq_enabled) { 922 qps = vf->ch[i].num_qps; 923 vsi_id = vf->ch[i].vsi_id; 924 } else { 925 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; 926 vsi_id = vf->lan_vsi_id; 927 } 928 929 for (j = 0; j < qps; j++) { 930 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j); 931 932 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK); 933 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id), 934 reg); 935 total_qps++; 936 } 937 } 938 } 939 940 /** 941 * i40e_enable_vf_mappings 942 * @vf: pointer to the VF info 943 * 944 * enable VF mappings 945 **/ 946 static void i40e_enable_vf_mappings(struct i40e_vf *vf) 947 { 948 struct i40e_pf *pf = vf->pf; 949 struct i40e_hw *hw = &pf->hw; 950 u32 reg; 951 952 /* Tell the hardware we're using noncontiguous mapping. HW requires 953 * that VF queues be mapped using this method, even when they are 954 * contiguous in real life 955 */ 956 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id), 957 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK); 958 959 /* enable VF vplan_qtable mappings */ 960 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK; 961 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg); 962 963 i40e_map_pf_to_vf_queues(vf); 964 i40e_map_pf_queues_to_vsi(vf); 965 966 i40e_flush(hw); 967 } 968 969 /** 970 * i40e_disable_vf_mappings 971 * @vf: pointer to the VF info 972 * 973 * disable VF mappings 974 **/ 975 static void i40e_disable_vf_mappings(struct i40e_vf *vf) 976 { 977 struct i40e_pf *pf = vf->pf; 978 struct i40e_hw *hw = &pf->hw; 979 int i; 980 981 /* disable qp mappings */ 982 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0); 983 for (i = 0; i < I40E_MAX_VSI_QP; i++) 984 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id), 985 I40E_QUEUE_END_OF_LIST); 986 i40e_flush(hw); 987 } 988 989 /** 990 * i40e_free_vf_res 991 * @vf: pointer to the VF info 992 * 993 * free VF resources 994 **/ 995 static void i40e_free_vf_res(struct i40e_vf *vf) 996 { 997 struct i40e_pf *pf = vf->pf; 998 struct i40e_hw *hw = &pf->hw; 999 u32 reg_idx, reg; 1000 int i, j, msix_vf; 1001 1002 /* Start by disabling VF's configuration API to prevent the OS from 1003 * accessing the VF's VSI after it's freed / invalidated. 1004 */ 1005 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states); 1006 1007 /* It's possible the VF had requeuested more queues than the default so 1008 * do the accounting here when we're about to free them. 1009 */ 1010 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) { 1011 pf->queues_left += vf->num_queue_pairs - 1012 I40E_DEFAULT_QUEUES_PER_VF; 1013 } 1014 1015 /* free vsi & disconnect it from the parent uplink */ 1016 if (vf->lan_vsi_idx) { 1017 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]); 1018 vf->lan_vsi_idx = 0; 1019 vf->lan_vsi_id = 0; 1020 } 1021 1022 /* do the accounting and remove additional ADq VSI's */ 1023 if (vf->adq_enabled && vf->ch[0].vsi_idx) { 1024 for (j = 0; j < vf->num_tc; j++) { 1025 /* At this point VSI0 is already released so don't 1026 * release it again and only clear their values in 1027 * structure variables 1028 */ 1029 if (j) 1030 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]); 1031 vf->ch[j].vsi_idx = 0; 1032 vf->ch[j].vsi_id = 0; 1033 } 1034 } 1035 msix_vf = pf->hw.func_caps.num_msix_vectors_vf; 1036 1037 /* disable interrupts so the VF starts in a known state */ 1038 for (i = 0; i < msix_vf; i++) { 1039 /* format is same for both registers */ 1040 if (0 == i) 1041 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id); 1042 else 1043 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) * 1044 (vf->vf_id)) 1045 + (i - 1)); 1046 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK); 1047 i40e_flush(hw); 1048 } 1049 1050 /* clear the irq settings */ 1051 for (i = 0; i < msix_vf; i++) { 1052 /* format is same for both registers */ 1053 if (0 == i) 1054 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id); 1055 else 1056 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) * 1057 (vf->vf_id)) 1058 + (i - 1)); 1059 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK | 1060 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK); 1061 wr32(hw, reg_idx, reg); 1062 i40e_flush(hw); 1063 } 1064 /* reset some of the state variables keeping track of the resources */ 1065 vf->num_queue_pairs = 0; 1066 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states); 1067 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states); 1068 } 1069 1070 /** 1071 * i40e_alloc_vf_res 1072 * @vf: pointer to the VF info 1073 * 1074 * allocate VF resources 1075 **/ 1076 static int i40e_alloc_vf_res(struct i40e_vf *vf) 1077 { 1078 struct i40e_pf *pf = vf->pf; 1079 int total_queue_pairs = 0; 1080 int ret, idx; 1081 1082 if (vf->num_req_queues && 1083 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF) 1084 pf->num_vf_qps = vf->num_req_queues; 1085 else 1086 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF; 1087 1088 /* allocate hw vsi context & associated resources */ 1089 ret = i40e_alloc_vsi_res(vf, 0); 1090 if (ret) 1091 goto error_alloc; 1092 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; 1093 1094 /* allocate additional VSIs based on tc information for ADq */ 1095 if (vf->adq_enabled) { 1096 if (pf->queues_left >= 1097 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) { 1098 /* TC 0 always belongs to VF VSI */ 1099 for (idx = 1; idx < vf->num_tc; idx++) { 1100 ret = i40e_alloc_vsi_res(vf, idx); 1101 if (ret) 1102 goto error_alloc; 1103 } 1104 /* send correct number of queues */ 1105 total_queue_pairs = I40E_MAX_VF_QUEUES; 1106 } else { 1107 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n", 1108 vf->vf_id); 1109 vf->adq_enabled = false; 1110 } 1111 } 1112 1113 /* We account for each VF to get a default number of queue pairs. If 1114 * the VF has now requested more, we need to account for that to make 1115 * certain we never request more queues than we actually have left in 1116 * HW. 1117 */ 1118 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) 1119 pf->queues_left -= 1120 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF; 1121 1122 if (vf->trusted) 1123 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps); 1124 else 1125 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps); 1126 1127 /* store the total qps number for the runtime 1128 * VF req validation 1129 */ 1130 vf->num_queue_pairs = total_queue_pairs; 1131 1132 /* VF is now completely initialized */ 1133 set_bit(I40E_VF_STATE_INIT, &vf->vf_states); 1134 1135 error_alloc: 1136 if (ret) 1137 i40e_free_vf_res(vf); 1138 1139 return ret; 1140 } 1141 1142 #define VF_DEVICE_STATUS 0xAA 1143 #define VF_TRANS_PENDING_MASK 0x20 1144 /** 1145 * i40e_quiesce_vf_pci 1146 * @vf: pointer to the VF structure 1147 * 1148 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO 1149 * if the transactions never clear. 1150 **/ 1151 static int i40e_quiesce_vf_pci(struct i40e_vf *vf) 1152 { 1153 struct i40e_pf *pf = vf->pf; 1154 struct i40e_hw *hw = &pf->hw; 1155 int vf_abs_id, i; 1156 u32 reg; 1157 1158 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id; 1159 1160 wr32(hw, I40E_PF_PCI_CIAA, 1161 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT)); 1162 for (i = 0; i < 100; i++) { 1163 reg = rd32(hw, I40E_PF_PCI_CIAD); 1164 if ((reg & VF_TRANS_PENDING_MASK) == 0) 1165 return 0; 1166 udelay(1); 1167 } 1168 return -EIO; 1169 } 1170 1171 /** 1172 * __i40e_getnum_vf_vsi_vlan_filters 1173 * @vsi: pointer to the vsi 1174 * 1175 * called to get the number of VLANs offloaded on this VF 1176 **/ 1177 static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi) 1178 { 1179 struct i40e_mac_filter *f; 1180 u16 num_vlans = 0, bkt; 1181 1182 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) { 1183 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID) 1184 num_vlans++; 1185 } 1186 1187 return num_vlans; 1188 } 1189 1190 /** 1191 * i40e_getnum_vf_vsi_vlan_filters 1192 * @vsi: pointer to the vsi 1193 * 1194 * wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held 1195 **/ 1196 static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi) 1197 { 1198 int num_vlans; 1199 1200 spin_lock_bh(&vsi->mac_filter_hash_lock); 1201 num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi); 1202 spin_unlock_bh(&vsi->mac_filter_hash_lock); 1203 1204 return num_vlans; 1205 } 1206 1207 /** 1208 * i40e_get_vlan_list_sync 1209 * @vsi: pointer to the VSI 1210 * @num_vlans: number of VLANs in mac_filter_hash, returned to caller 1211 * @vlan_list: list of VLANs present in mac_filter_hash, returned to caller. 1212 * This array is allocated here, but has to be freed in caller. 1213 * 1214 * Called to get number of VLANs and VLAN list present in mac_filter_hash. 1215 **/ 1216 static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans, 1217 s16 **vlan_list) 1218 { 1219 struct i40e_mac_filter *f; 1220 int i = 0; 1221 int bkt; 1222 1223 spin_lock_bh(&vsi->mac_filter_hash_lock); 1224 *num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi); 1225 *vlan_list = kcalloc(*num_vlans, sizeof(**vlan_list), GFP_ATOMIC); 1226 if (!(*vlan_list)) 1227 goto err; 1228 1229 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) { 1230 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID) 1231 continue; 1232 (*vlan_list)[i++] = f->vlan; 1233 } 1234 err: 1235 spin_unlock_bh(&vsi->mac_filter_hash_lock); 1236 } 1237 1238 /** 1239 * i40e_set_vsi_promisc 1240 * @vf: pointer to the VF struct 1241 * @seid: VSI number 1242 * @multi_enable: set MAC L2 layer multicast promiscuous enable/disable 1243 * for a given VLAN 1244 * @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable 1245 * for a given VLAN 1246 * @vl: List of VLANs - apply filter for given VLANs 1247 * @num_vlans: Number of elements in @vl 1248 **/ 1249 static i40e_status 1250 i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable, 1251 bool unicast_enable, s16 *vl, u16 num_vlans) 1252 { 1253 i40e_status aq_ret, aq_tmp = 0; 1254 struct i40e_pf *pf = vf->pf; 1255 struct i40e_hw *hw = &pf->hw; 1256 int i; 1257 1258 /* No VLAN to set promisc on, set on VSI */ 1259 if (!num_vlans || !vl) { 1260 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, seid, 1261 multi_enable, 1262 NULL); 1263 if (aq_ret) { 1264 int aq_err = pf->hw.aq.asq_last_status; 1265 1266 dev_err(&pf->pdev->dev, 1267 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n", 1268 vf->vf_id, 1269 i40e_stat_str(&pf->hw, aq_ret), 1270 i40e_aq_str(&pf->hw, aq_err)); 1271 1272 return aq_ret; 1273 } 1274 1275 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, seid, 1276 unicast_enable, 1277 NULL, true); 1278 1279 if (aq_ret) { 1280 int aq_err = pf->hw.aq.asq_last_status; 1281 1282 dev_err(&pf->pdev->dev, 1283 "VF %d failed to set unicast promiscuous mode err %s aq_err %s\n", 1284 vf->vf_id, 1285 i40e_stat_str(&pf->hw, aq_ret), 1286 i40e_aq_str(&pf->hw, aq_err)); 1287 } 1288 1289 return aq_ret; 1290 } 1291 1292 for (i = 0; i < num_vlans; i++) { 1293 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid, 1294 multi_enable, 1295 vl[i], NULL); 1296 if (aq_ret) { 1297 int aq_err = pf->hw.aq.asq_last_status; 1298 1299 dev_err(&pf->pdev->dev, 1300 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n", 1301 vf->vf_id, 1302 i40e_stat_str(&pf->hw, aq_ret), 1303 i40e_aq_str(&pf->hw, aq_err)); 1304 1305 if (!aq_tmp) 1306 aq_tmp = aq_ret; 1307 } 1308 1309 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid, 1310 unicast_enable, 1311 vl[i], NULL); 1312 if (aq_ret) { 1313 int aq_err = pf->hw.aq.asq_last_status; 1314 1315 dev_err(&pf->pdev->dev, 1316 "VF %d failed to set unicast promiscuous mode err %s aq_err %s\n", 1317 vf->vf_id, 1318 i40e_stat_str(&pf->hw, aq_ret), 1319 i40e_aq_str(&pf->hw, aq_err)); 1320 1321 if (!aq_tmp) 1322 aq_tmp = aq_ret; 1323 } 1324 } 1325 1326 if (aq_tmp) 1327 aq_ret = aq_tmp; 1328 1329 return aq_ret; 1330 } 1331 1332 /** 1333 * i40e_config_vf_promiscuous_mode 1334 * @vf: pointer to the VF info 1335 * @vsi_id: VSI id 1336 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable 1337 * @alluni: set MAC L2 layer unicast promiscuous enable/disable 1338 * 1339 * Called from the VF to configure the promiscuous mode of 1340 * VF vsis and from the VF reset path to reset promiscuous mode. 1341 **/ 1342 static i40e_status i40e_config_vf_promiscuous_mode(struct i40e_vf *vf, 1343 u16 vsi_id, 1344 bool allmulti, 1345 bool alluni) 1346 { 1347 i40e_status aq_ret = I40E_SUCCESS; 1348 struct i40e_pf *pf = vf->pf; 1349 struct i40e_vsi *vsi; 1350 u16 num_vlans; 1351 s16 *vl; 1352 1353 vsi = i40e_find_vsi_from_id(pf, vsi_id); 1354 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi) 1355 return I40E_ERR_PARAM; 1356 1357 if (vf->port_vlan_id) { 1358 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, 1359 alluni, &vf->port_vlan_id, 1); 1360 return aq_ret; 1361 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) { 1362 i40e_get_vlan_list_sync(vsi, &num_vlans, &vl); 1363 1364 if (!vl) 1365 return I40E_ERR_NO_MEMORY; 1366 1367 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni, 1368 vl, num_vlans); 1369 kfree(vl); 1370 return aq_ret; 1371 } 1372 1373 /* no VLANs to set on, set on VSI */ 1374 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni, 1375 NULL, 0); 1376 return aq_ret; 1377 } 1378 1379 /** 1380 * i40e_trigger_vf_reset 1381 * @vf: pointer to the VF structure 1382 * @flr: VFLR was issued or not 1383 * 1384 * Trigger hardware to start a reset for a particular VF. Expects the caller 1385 * to wait the proper amount of time to allow hardware to reset the VF before 1386 * it cleans up and restores VF functionality. 1387 **/ 1388 static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr) 1389 { 1390 struct i40e_pf *pf = vf->pf; 1391 struct i40e_hw *hw = &pf->hw; 1392 u32 reg, reg_idx, bit_idx; 1393 1394 /* warn the VF */ 1395 clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states); 1396 1397 /* Disable VF's configuration API during reset. The flag is re-enabled 1398 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI. 1399 * It's normally disabled in i40e_free_vf_res(), but it's safer 1400 * to do it earlier to give some time to finish to any VF config 1401 * functions that may still be running at this point. 1402 */ 1403 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states); 1404 1405 /* In the case of a VFLR, the HW has already reset the VF and we 1406 * just need to clean up, so don't hit the VFRTRIG register. 1407 */ 1408 if (!flr) { 1409 /* reset VF using VPGEN_VFRTRIG reg */ 1410 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id)); 1411 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK; 1412 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg); 1413 i40e_flush(hw); 1414 } 1415 /* clear the VFLR bit in GLGEN_VFLRSTAT */ 1416 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32; 1417 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32; 1418 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx)); 1419 i40e_flush(hw); 1420 1421 if (i40e_quiesce_vf_pci(vf)) 1422 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n", 1423 vf->vf_id); 1424 } 1425 1426 /** 1427 * i40e_cleanup_reset_vf 1428 * @vf: pointer to the VF structure 1429 * 1430 * Cleanup a VF after the hardware reset is finished. Expects the caller to 1431 * have verified whether the reset is finished properly, and ensure the 1432 * minimum amount of wait time has passed. 1433 **/ 1434 static void i40e_cleanup_reset_vf(struct i40e_vf *vf) 1435 { 1436 struct i40e_pf *pf = vf->pf; 1437 struct i40e_hw *hw = &pf->hw; 1438 u32 reg; 1439 1440 /* disable promisc modes in case they were enabled */ 1441 i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false); 1442 1443 /* free VF resources to begin resetting the VSI state */ 1444 i40e_free_vf_res(vf); 1445 1446 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg. 1447 * By doing this we allow HW to access VF memory at any point. If we 1448 * did it any sooner, HW could access memory while it was being freed 1449 * in i40e_free_vf_res(), causing an IOMMU fault. 1450 * 1451 * On the other hand, this needs to be done ASAP, because the VF driver 1452 * is waiting for this to happen and may report a timeout. It's 1453 * harmless, but it gets logged into Guest OS kernel log, so best avoid 1454 * it. 1455 */ 1456 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id)); 1457 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK; 1458 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg); 1459 1460 /* reallocate VF resources to finish resetting the VSI state */ 1461 if (!i40e_alloc_vf_res(vf)) { 1462 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id; 1463 i40e_enable_vf_mappings(vf); 1464 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states); 1465 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states); 1466 /* Do not notify the client during VF init */ 1467 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE, 1468 &vf->vf_states)) 1469 i40e_notify_client_of_vf_reset(pf, abs_vf_id); 1470 vf->num_vlan = 0; 1471 } 1472 1473 /* Tell the VF driver the reset is done. This needs to be done only 1474 * after VF has been fully initialized, because the VF driver may 1475 * request resources immediately after setting this flag. 1476 */ 1477 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE); 1478 } 1479 1480 /** 1481 * i40e_reset_vf 1482 * @vf: pointer to the VF structure 1483 * @flr: VFLR was issued or not 1484 * 1485 * Returns true if the VF is in reset, resets successfully, or resets 1486 * are disabled and false otherwise. 1487 **/ 1488 bool i40e_reset_vf(struct i40e_vf *vf, bool flr) 1489 { 1490 struct i40e_pf *pf = vf->pf; 1491 struct i40e_hw *hw = &pf->hw; 1492 bool rsd = false; 1493 u32 reg; 1494 int i; 1495 1496 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state)) 1497 return true; 1498 1499 /* If the VFs have been disabled, this means something else is 1500 * resetting the VF, so we shouldn't continue. 1501 */ 1502 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state)) 1503 return true; 1504 1505 i40e_trigger_vf_reset(vf, flr); 1506 1507 /* poll VPGEN_VFRSTAT reg to make sure 1508 * that reset is complete 1509 */ 1510 for (i = 0; i < 10; i++) { 1511 /* VF reset requires driver to first reset the VF and then 1512 * poll the status register to make sure that the reset 1513 * completed successfully. Due to internal HW FIFO flushes, 1514 * we must wait 10ms before the register will be valid. 1515 */ 1516 usleep_range(10000, 20000); 1517 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id)); 1518 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) { 1519 rsd = true; 1520 break; 1521 } 1522 } 1523 1524 if (flr) 1525 usleep_range(10000, 20000); 1526 1527 if (!rsd) 1528 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n", 1529 vf->vf_id); 1530 usleep_range(10000, 20000); 1531 1532 /* On initial reset, we don't have any queues to disable */ 1533 if (vf->lan_vsi_idx != 0) 1534 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]); 1535 1536 i40e_cleanup_reset_vf(vf); 1537 1538 i40e_flush(hw); 1539 clear_bit(__I40E_VF_DISABLE, pf->state); 1540 1541 return true; 1542 } 1543 1544 /** 1545 * i40e_reset_all_vfs 1546 * @pf: pointer to the PF structure 1547 * @flr: VFLR was issued or not 1548 * 1549 * Reset all allocated VFs in one go. First, tell the hardware to reset each 1550 * VF, then do all the waiting in one chunk, and finally finish restoring each 1551 * VF after the wait. This is useful during PF routines which need to reset 1552 * all VFs, as otherwise it must perform these resets in a serialized fashion. 1553 * 1554 * Returns true if any VFs were reset, and false otherwise. 1555 **/ 1556 bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr) 1557 { 1558 struct i40e_hw *hw = &pf->hw; 1559 struct i40e_vf *vf; 1560 int i, v; 1561 u32 reg; 1562 1563 /* If we don't have any VFs, then there is nothing to reset */ 1564 if (!pf->num_alloc_vfs) 1565 return false; 1566 1567 /* If VFs have been disabled, there is no need to reset */ 1568 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state)) 1569 return false; 1570 1571 /* Begin reset on all VFs at once */ 1572 for (v = 0; v < pf->num_alloc_vfs; v++) 1573 i40e_trigger_vf_reset(&pf->vf[v], flr); 1574 1575 /* HW requires some time to make sure it can flush the FIFO for a VF 1576 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in 1577 * sequence to make sure that it has completed. We'll keep track of 1578 * the VFs using a simple iterator that increments once that VF has 1579 * finished resetting. 1580 */ 1581 for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) { 1582 usleep_range(10000, 20000); 1583 1584 /* Check each VF in sequence, beginning with the VF to fail 1585 * the previous check. 1586 */ 1587 while (v < pf->num_alloc_vfs) { 1588 vf = &pf->vf[v]; 1589 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id)); 1590 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK)) 1591 break; 1592 1593 /* If the current VF has finished resetting, move on 1594 * to the next VF in sequence. 1595 */ 1596 v++; 1597 } 1598 } 1599 1600 if (flr) 1601 usleep_range(10000, 20000); 1602 1603 /* Display a warning if at least one VF didn't manage to reset in 1604 * time, but continue on with the operation. 1605 */ 1606 if (v < pf->num_alloc_vfs) 1607 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n", 1608 pf->vf[v].vf_id); 1609 usleep_range(10000, 20000); 1610 1611 /* Begin disabling all the rings associated with VFs, but do not wait 1612 * between each VF. 1613 */ 1614 for (v = 0; v < pf->num_alloc_vfs; v++) { 1615 /* On initial reset, we don't have any queues to disable */ 1616 if (pf->vf[v].lan_vsi_idx == 0) 1617 continue; 1618 1619 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[v].lan_vsi_idx]); 1620 } 1621 1622 /* Now that we've notified HW to disable all of the VF rings, wait 1623 * until they finish. 1624 */ 1625 for (v = 0; v < pf->num_alloc_vfs; v++) { 1626 /* On initial reset, we don't have any queues to disable */ 1627 if (pf->vf[v].lan_vsi_idx == 0) 1628 continue; 1629 1630 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[v].lan_vsi_idx]); 1631 } 1632 1633 /* Hw may need up to 50ms to finish disabling the RX queues. We 1634 * minimize the wait by delaying only once for all VFs. 1635 */ 1636 mdelay(50); 1637 1638 /* Finish the reset on each VF */ 1639 for (v = 0; v < pf->num_alloc_vfs; v++) 1640 i40e_cleanup_reset_vf(&pf->vf[v]); 1641 1642 i40e_flush(hw); 1643 clear_bit(__I40E_VF_DISABLE, pf->state); 1644 1645 return true; 1646 } 1647 1648 /** 1649 * i40e_free_vfs 1650 * @pf: pointer to the PF structure 1651 * 1652 * free VF resources 1653 **/ 1654 void i40e_free_vfs(struct i40e_pf *pf) 1655 { 1656 struct i40e_hw *hw = &pf->hw; 1657 u32 reg_idx, bit_idx; 1658 int i, tmp, vf_id; 1659 1660 if (!pf->vf) 1661 return; 1662 1663 set_bit(__I40E_VFS_RELEASING, pf->state); 1664 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state)) 1665 usleep_range(1000, 2000); 1666 1667 i40e_notify_client_of_vf_enable(pf, 0); 1668 1669 /* Disable IOV before freeing resources. This lets any VF drivers 1670 * running in the host get themselves cleaned up before we yank 1671 * the carpet out from underneath their feet. 1672 */ 1673 if (!pci_vfs_assigned(pf->pdev)) 1674 pci_disable_sriov(pf->pdev); 1675 else 1676 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n"); 1677 1678 /* Amortize wait time by stopping all VFs at the same time */ 1679 for (i = 0; i < pf->num_alloc_vfs; i++) { 1680 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states)) 1681 continue; 1682 1683 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]); 1684 } 1685 1686 for (i = 0; i < pf->num_alloc_vfs; i++) { 1687 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states)) 1688 continue; 1689 1690 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]); 1691 } 1692 1693 /* free up VF resources */ 1694 tmp = pf->num_alloc_vfs; 1695 pf->num_alloc_vfs = 0; 1696 for (i = 0; i < tmp; i++) { 1697 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states)) 1698 i40e_free_vf_res(&pf->vf[i]); 1699 /* disable qp mappings */ 1700 i40e_disable_vf_mappings(&pf->vf[i]); 1701 } 1702 1703 kfree(pf->vf); 1704 pf->vf = NULL; 1705 1706 /* This check is for when the driver is unloaded while VFs are 1707 * assigned. Setting the number of VFs to 0 through sysfs is caught 1708 * before this function ever gets called. 1709 */ 1710 if (!pci_vfs_assigned(pf->pdev)) { 1711 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to 1712 * work correctly when SR-IOV gets re-enabled. 1713 */ 1714 for (vf_id = 0; vf_id < tmp; vf_id++) { 1715 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32; 1716 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32; 1717 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx)); 1718 } 1719 } 1720 clear_bit(__I40E_VF_DISABLE, pf->state); 1721 clear_bit(__I40E_VFS_RELEASING, pf->state); 1722 } 1723 1724 #ifdef CONFIG_PCI_IOV 1725 /** 1726 * i40e_alloc_vfs 1727 * @pf: pointer to the PF structure 1728 * @num_alloc_vfs: number of VFs to allocate 1729 * 1730 * allocate VF resources 1731 **/ 1732 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs) 1733 { 1734 struct i40e_vf *vfs; 1735 int i, ret = 0; 1736 1737 /* Disable interrupt 0 so we don't try to handle the VFLR. */ 1738 i40e_irq_dynamic_disable_icr0(pf); 1739 1740 /* Check to see if we're just allocating resources for extant VFs */ 1741 if (pci_num_vf(pf->pdev) != num_alloc_vfs) { 1742 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs); 1743 if (ret) { 1744 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED; 1745 pf->num_alloc_vfs = 0; 1746 goto err_iov; 1747 } 1748 } 1749 /* allocate memory */ 1750 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL); 1751 if (!vfs) { 1752 ret = -ENOMEM; 1753 goto err_alloc; 1754 } 1755 pf->vf = vfs; 1756 1757 /* apply default profile */ 1758 for (i = 0; i < num_alloc_vfs; i++) { 1759 vfs[i].pf = pf; 1760 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB; 1761 vfs[i].vf_id = i; 1762 1763 /* assign default capabilities */ 1764 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps); 1765 vfs[i].spoofchk = true; 1766 1767 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states); 1768 1769 } 1770 pf->num_alloc_vfs = num_alloc_vfs; 1771 1772 /* VF resources get allocated during reset */ 1773 i40e_reset_all_vfs(pf, false); 1774 1775 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs); 1776 1777 err_alloc: 1778 if (ret) 1779 i40e_free_vfs(pf); 1780 err_iov: 1781 /* Re-enable interrupt 0. */ 1782 i40e_irq_dynamic_enable_icr0(pf); 1783 return ret; 1784 } 1785 1786 #endif 1787 /** 1788 * i40e_pci_sriov_enable 1789 * @pdev: pointer to a pci_dev structure 1790 * @num_vfs: number of VFs to allocate 1791 * 1792 * Enable or change the number of VFs 1793 **/ 1794 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs) 1795 { 1796 #ifdef CONFIG_PCI_IOV 1797 struct i40e_pf *pf = pci_get_drvdata(pdev); 1798 int pre_existing_vfs = pci_num_vf(pdev); 1799 int err = 0; 1800 1801 if (test_bit(__I40E_TESTING, pf->state)) { 1802 dev_warn(&pdev->dev, 1803 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n"); 1804 err = -EPERM; 1805 goto err_out; 1806 } 1807 1808 if (pre_existing_vfs && pre_existing_vfs != num_vfs) 1809 i40e_free_vfs(pf); 1810 else if (pre_existing_vfs && pre_existing_vfs == num_vfs) 1811 goto out; 1812 1813 if (num_vfs > pf->num_req_vfs) { 1814 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n", 1815 num_vfs, pf->num_req_vfs); 1816 err = -EPERM; 1817 goto err_out; 1818 } 1819 1820 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs); 1821 err = i40e_alloc_vfs(pf, num_vfs); 1822 if (err) { 1823 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err); 1824 goto err_out; 1825 } 1826 1827 out: 1828 return num_vfs; 1829 1830 err_out: 1831 return err; 1832 #endif 1833 return 0; 1834 } 1835 1836 /** 1837 * i40e_pci_sriov_configure 1838 * @pdev: pointer to a pci_dev structure 1839 * @num_vfs: number of VFs to allocate 1840 * 1841 * Enable or change the number of VFs. Called when the user updates the number 1842 * of VFs in sysfs. 1843 **/ 1844 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs) 1845 { 1846 struct i40e_pf *pf = pci_get_drvdata(pdev); 1847 int ret = 0; 1848 1849 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 1850 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 1851 return -EAGAIN; 1852 } 1853 1854 if (num_vfs) { 1855 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) { 1856 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED; 1857 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG); 1858 } 1859 ret = i40e_pci_sriov_enable(pdev, num_vfs); 1860 goto sriov_configure_out; 1861 } 1862 1863 if (!pci_vfs_assigned(pf->pdev)) { 1864 i40e_free_vfs(pf); 1865 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED; 1866 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG); 1867 } else { 1868 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n"); 1869 ret = -EINVAL; 1870 goto sriov_configure_out; 1871 } 1872 sriov_configure_out: 1873 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 1874 return ret; 1875 } 1876 1877 /***********************virtual channel routines******************/ 1878 1879 /** 1880 * i40e_vc_send_msg_to_vf 1881 * @vf: pointer to the VF info 1882 * @v_opcode: virtual channel opcode 1883 * @v_retval: virtual channel return value 1884 * @msg: pointer to the msg buffer 1885 * @msglen: msg length 1886 * 1887 * send msg to VF 1888 **/ 1889 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode, 1890 u32 v_retval, u8 *msg, u16 msglen) 1891 { 1892 struct i40e_pf *pf; 1893 struct i40e_hw *hw; 1894 int abs_vf_id; 1895 i40e_status aq_ret; 1896 1897 /* validate the request */ 1898 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs) 1899 return -EINVAL; 1900 1901 pf = vf->pf; 1902 hw = &pf->hw; 1903 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id; 1904 1905 /* single place to detect unsuccessful return values */ 1906 if (v_retval) { 1907 vf->num_invalid_msgs++; 1908 dev_info(&pf->pdev->dev, "VF %d failed opcode %d, retval: %d\n", 1909 vf->vf_id, v_opcode, v_retval); 1910 if (vf->num_invalid_msgs > 1911 I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) { 1912 dev_err(&pf->pdev->dev, 1913 "Number of invalid messages exceeded for VF %d\n", 1914 vf->vf_id); 1915 dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n"); 1916 set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states); 1917 } 1918 } else { 1919 vf->num_valid_msgs++; 1920 /* reset the invalid counter, if a valid message is received. */ 1921 vf->num_invalid_msgs = 0; 1922 } 1923 1924 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval, 1925 msg, msglen, NULL); 1926 if (aq_ret) { 1927 dev_info(&pf->pdev->dev, 1928 "Unable to send the message to VF %d aq_err %d\n", 1929 vf->vf_id, pf->hw.aq.asq_last_status); 1930 return -EIO; 1931 } 1932 1933 return 0; 1934 } 1935 1936 /** 1937 * i40e_vc_send_resp_to_vf 1938 * @vf: pointer to the VF info 1939 * @opcode: operation code 1940 * @retval: return value 1941 * 1942 * send resp msg to VF 1943 **/ 1944 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf, 1945 enum virtchnl_ops opcode, 1946 i40e_status retval) 1947 { 1948 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0); 1949 } 1950 1951 /** 1952 * i40e_sync_vf_state 1953 * @vf: pointer to the VF info 1954 * @state: VF state 1955 * 1956 * Called from a VF message to synchronize the service with a potential 1957 * VF reset state 1958 **/ 1959 static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state) 1960 { 1961 int i; 1962 1963 /* When handling some messages, it needs VF state to be set. 1964 * It is possible that this flag is cleared during VF reset, 1965 * so there is a need to wait until the end of the reset to 1966 * handle the request message correctly. 1967 */ 1968 for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) { 1969 if (test_bit(state, &vf->vf_states)) 1970 return true; 1971 usleep_range(10000, 20000); 1972 } 1973 1974 return test_bit(state, &vf->vf_states); 1975 } 1976 1977 /** 1978 * i40e_vc_get_version_msg 1979 * @vf: pointer to the VF info 1980 * @msg: pointer to the msg buffer 1981 * 1982 * called from the VF to request the API version used by the PF 1983 **/ 1984 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg) 1985 { 1986 struct virtchnl_version_info info = { 1987 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR 1988 }; 1989 1990 vf->vf_ver = *(struct virtchnl_version_info *)msg; 1991 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */ 1992 if (VF_IS_V10(&vf->vf_ver)) 1993 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS; 1994 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION, 1995 I40E_SUCCESS, (u8 *)&info, 1996 sizeof(struct virtchnl_version_info)); 1997 } 1998 1999 /** 2000 * i40e_del_qch - delete all the additional VSIs created as a part of ADq 2001 * @vf: pointer to VF structure 2002 **/ 2003 static void i40e_del_qch(struct i40e_vf *vf) 2004 { 2005 struct i40e_pf *pf = vf->pf; 2006 int i; 2007 2008 /* first element in the array belongs to primary VF VSI and we shouldn't 2009 * delete it. We should however delete the rest of the VSIs created 2010 */ 2011 for (i = 1; i < vf->num_tc; i++) { 2012 if (vf->ch[i].vsi_idx) { 2013 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]); 2014 vf->ch[i].vsi_idx = 0; 2015 vf->ch[i].vsi_id = 0; 2016 } 2017 } 2018 } 2019 2020 /** 2021 * i40e_vc_get_vf_resources_msg 2022 * @vf: pointer to the VF info 2023 * @msg: pointer to the msg buffer 2024 * 2025 * called from the VF to request its resources 2026 **/ 2027 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg) 2028 { 2029 struct virtchnl_vf_resource *vfres = NULL; 2030 struct i40e_pf *pf = vf->pf; 2031 i40e_status aq_ret = 0; 2032 struct i40e_vsi *vsi; 2033 int num_vsis = 1; 2034 size_t len = 0; 2035 int ret; 2036 2037 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) { 2038 aq_ret = I40E_ERR_PARAM; 2039 goto err; 2040 } 2041 2042 len = struct_size(vfres, vsi_res, num_vsis); 2043 vfres = kzalloc(len, GFP_KERNEL); 2044 if (!vfres) { 2045 aq_ret = I40E_ERR_NO_MEMORY; 2046 len = 0; 2047 goto err; 2048 } 2049 if (VF_IS_V11(&vf->vf_ver)) 2050 vf->driver_caps = *(u32 *)msg; 2051 else 2052 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 | 2053 VIRTCHNL_VF_OFFLOAD_RSS_REG | 2054 VIRTCHNL_VF_OFFLOAD_VLAN; 2055 2056 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2; 2057 vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED; 2058 vsi = pf->vsi[vf->lan_vsi_idx]; 2059 if (!vsi->info.pvid) 2060 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN; 2061 2062 if (i40e_vf_client_capable(pf, vf->vf_id) && 2063 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_IWARP)) { 2064 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_IWARP; 2065 set_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states); 2066 } else { 2067 clear_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states); 2068 } 2069 2070 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) { 2071 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF; 2072 } else { 2073 if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) && 2074 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ)) 2075 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ; 2076 else 2077 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG; 2078 } 2079 2080 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) { 2081 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2) 2082 vfres->vf_cap_flags |= 2083 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2; 2084 } 2085 2086 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP) 2087 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP; 2088 2089 if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) && 2090 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM)) 2091 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM; 2092 2093 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) { 2094 if (pf->flags & I40E_FLAG_MFP_ENABLED) { 2095 dev_err(&pf->pdev->dev, 2096 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n", 2097 vf->vf_id); 2098 aq_ret = I40E_ERR_PARAM; 2099 goto err; 2100 } 2101 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING; 2102 } 2103 2104 if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) { 2105 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) 2106 vfres->vf_cap_flags |= 2107 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR; 2108 } 2109 2110 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES) 2111 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES; 2112 2113 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ) 2114 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ; 2115 2116 vfres->num_vsis = num_vsis; 2117 vfres->num_queue_pairs = vf->num_queue_pairs; 2118 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf; 2119 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE; 2120 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE; 2121 2122 if (vf->lan_vsi_idx) { 2123 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id; 2124 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV; 2125 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs; 2126 /* VFs only use TC 0 */ 2127 vfres->vsi_res[0].qset_handle 2128 = le16_to_cpu(vsi->info.qs_handle[0]); 2129 ether_addr_copy(vfres->vsi_res[0].default_mac_addr, 2130 vf->default_lan_addr.addr); 2131 } 2132 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states); 2133 2134 err: 2135 /* send the response back to the VF */ 2136 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES, 2137 aq_ret, (u8 *)vfres, len); 2138 2139 kfree(vfres); 2140 return ret; 2141 } 2142 2143 /** 2144 * i40e_vc_config_promiscuous_mode_msg 2145 * @vf: pointer to the VF info 2146 * @msg: pointer to the msg buffer 2147 * 2148 * called from the VF to configure the promiscuous mode of 2149 * VF vsis 2150 **/ 2151 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg) 2152 { 2153 struct virtchnl_promisc_info *info = 2154 (struct virtchnl_promisc_info *)msg; 2155 struct i40e_pf *pf = vf->pf; 2156 i40e_status aq_ret = 0; 2157 bool allmulti = false; 2158 bool alluni = false; 2159 2160 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 2161 aq_ret = I40E_ERR_PARAM; 2162 goto err_out; 2163 } 2164 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) { 2165 dev_err(&pf->pdev->dev, 2166 "Unprivileged VF %d is attempting to configure promiscuous mode\n", 2167 vf->vf_id); 2168 2169 /* Lie to the VF on purpose, because this is an error we can 2170 * ignore. Unprivileged VF is not a virtual channel error. 2171 */ 2172 aq_ret = 0; 2173 goto err_out; 2174 } 2175 2176 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) { 2177 aq_ret = I40E_ERR_PARAM; 2178 goto err_out; 2179 } 2180 2181 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) { 2182 aq_ret = I40E_ERR_PARAM; 2183 goto err_out; 2184 } 2185 2186 /* Multicast promiscuous handling*/ 2187 if (info->flags & FLAG_VF_MULTICAST_PROMISC) 2188 allmulti = true; 2189 2190 if (info->flags & FLAG_VF_UNICAST_PROMISC) 2191 alluni = true; 2192 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti, 2193 alluni); 2194 if (aq_ret) 2195 goto err_out; 2196 2197 if (allmulti) { 2198 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC, 2199 &vf->vf_states)) 2200 dev_info(&pf->pdev->dev, 2201 "VF %d successfully set multicast promiscuous mode\n", 2202 vf->vf_id); 2203 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC, 2204 &vf->vf_states)) 2205 dev_info(&pf->pdev->dev, 2206 "VF %d successfully unset multicast promiscuous mode\n", 2207 vf->vf_id); 2208 2209 if (alluni) { 2210 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC, 2211 &vf->vf_states)) 2212 dev_info(&pf->pdev->dev, 2213 "VF %d successfully set unicast promiscuous mode\n", 2214 vf->vf_id); 2215 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC, 2216 &vf->vf_states)) 2217 dev_info(&pf->pdev->dev, 2218 "VF %d successfully unset unicast promiscuous mode\n", 2219 vf->vf_id); 2220 2221 err_out: 2222 /* send the response to the VF */ 2223 return i40e_vc_send_resp_to_vf(vf, 2224 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE, 2225 aq_ret); 2226 } 2227 2228 /** 2229 * i40e_vc_config_queues_msg 2230 * @vf: pointer to the VF info 2231 * @msg: pointer to the msg buffer 2232 * 2233 * called from the VF to configure the rx/tx 2234 * queues 2235 **/ 2236 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg) 2237 { 2238 struct virtchnl_vsi_queue_config_info *qci = 2239 (struct virtchnl_vsi_queue_config_info *)msg; 2240 struct virtchnl_queue_pair_info *qpi; 2241 u16 vsi_id, vsi_queue_id = 0; 2242 struct i40e_pf *pf = vf->pf; 2243 i40e_status aq_ret = 0; 2244 int i, j = 0, idx = 0; 2245 struct i40e_vsi *vsi; 2246 u16 num_qps_all = 0; 2247 2248 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 2249 aq_ret = I40E_ERR_PARAM; 2250 goto error_param; 2251 } 2252 2253 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) { 2254 aq_ret = I40E_ERR_PARAM; 2255 goto error_param; 2256 } 2257 2258 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) { 2259 aq_ret = I40E_ERR_PARAM; 2260 goto error_param; 2261 } 2262 2263 if (vf->adq_enabled) { 2264 for (i = 0; i < I40E_MAX_VF_VSI; i++) 2265 num_qps_all += vf->ch[i].num_qps; 2266 if (num_qps_all != qci->num_queue_pairs) { 2267 aq_ret = I40E_ERR_PARAM; 2268 goto error_param; 2269 } 2270 } 2271 2272 vsi_id = qci->vsi_id; 2273 2274 for (i = 0; i < qci->num_queue_pairs; i++) { 2275 qpi = &qci->qpair[i]; 2276 2277 if (!vf->adq_enabled) { 2278 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, 2279 qpi->txq.queue_id)) { 2280 aq_ret = I40E_ERR_PARAM; 2281 goto error_param; 2282 } 2283 2284 vsi_queue_id = qpi->txq.queue_id; 2285 2286 if (qpi->txq.vsi_id != qci->vsi_id || 2287 qpi->rxq.vsi_id != qci->vsi_id || 2288 qpi->rxq.queue_id != vsi_queue_id) { 2289 aq_ret = I40E_ERR_PARAM; 2290 goto error_param; 2291 } 2292 } 2293 2294 if (vf->adq_enabled) { 2295 if (idx >= ARRAY_SIZE(vf->ch)) { 2296 aq_ret = I40E_ERR_NO_AVAILABLE_VSI; 2297 goto error_param; 2298 } 2299 vsi_id = vf->ch[idx].vsi_id; 2300 } 2301 2302 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id, 2303 &qpi->rxq) || 2304 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id, 2305 &qpi->txq)) { 2306 aq_ret = I40E_ERR_PARAM; 2307 goto error_param; 2308 } 2309 2310 /* For ADq there can be up to 4 VSIs with max 4 queues each. 2311 * VF does not know about these additional VSIs and all 2312 * it cares is about its own queues. PF configures these queues 2313 * to its appropriate VSIs based on TC mapping 2314 */ 2315 if (vf->adq_enabled) { 2316 if (idx >= ARRAY_SIZE(vf->ch)) { 2317 aq_ret = I40E_ERR_NO_AVAILABLE_VSI; 2318 goto error_param; 2319 } 2320 if (j == (vf->ch[idx].num_qps - 1)) { 2321 idx++; 2322 j = 0; /* resetting the queue count */ 2323 vsi_queue_id = 0; 2324 } else { 2325 j++; 2326 vsi_queue_id++; 2327 } 2328 } 2329 } 2330 /* set vsi num_queue_pairs in use to num configured by VF */ 2331 if (!vf->adq_enabled) { 2332 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs = 2333 qci->num_queue_pairs; 2334 } else { 2335 for (i = 0; i < vf->num_tc; i++) { 2336 vsi = pf->vsi[vf->ch[i].vsi_idx]; 2337 vsi->num_queue_pairs = vf->ch[i].num_qps; 2338 2339 if (i40e_update_adq_vsi_queues(vsi, i)) { 2340 aq_ret = I40E_ERR_CONFIG; 2341 goto error_param; 2342 } 2343 } 2344 } 2345 2346 error_param: 2347 /* send the response to the VF */ 2348 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES, 2349 aq_ret); 2350 } 2351 2352 /** 2353 * i40e_validate_queue_map - check queue map is valid 2354 * @vf: the VF structure pointer 2355 * @vsi_id: vsi id 2356 * @queuemap: Tx or Rx queue map 2357 * 2358 * check if Tx or Rx queue map is valid 2359 **/ 2360 static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id, 2361 unsigned long queuemap) 2362 { 2363 u16 vsi_queue_id, queue_id; 2364 2365 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) { 2366 if (vf->adq_enabled) { 2367 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id; 2368 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF); 2369 } else { 2370 queue_id = vsi_queue_id; 2371 } 2372 2373 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id)) 2374 return -EINVAL; 2375 } 2376 2377 return 0; 2378 } 2379 2380 /** 2381 * i40e_vc_config_irq_map_msg 2382 * @vf: pointer to the VF info 2383 * @msg: pointer to the msg buffer 2384 * 2385 * called from the VF to configure the irq to 2386 * queue map 2387 **/ 2388 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg) 2389 { 2390 struct virtchnl_irq_map_info *irqmap_info = 2391 (struct virtchnl_irq_map_info *)msg; 2392 struct virtchnl_vector_map *map; 2393 u16 vsi_id; 2394 i40e_status aq_ret = 0; 2395 int i; 2396 2397 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 2398 aq_ret = I40E_ERR_PARAM; 2399 goto error_param; 2400 } 2401 2402 if (irqmap_info->num_vectors > 2403 vf->pf->hw.func_caps.num_msix_vectors_vf) { 2404 aq_ret = I40E_ERR_PARAM; 2405 goto error_param; 2406 } 2407 2408 for (i = 0; i < irqmap_info->num_vectors; i++) { 2409 map = &irqmap_info->vecmap[i]; 2410 /* validate msg params */ 2411 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) || 2412 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) { 2413 aq_ret = I40E_ERR_PARAM; 2414 goto error_param; 2415 } 2416 vsi_id = map->vsi_id; 2417 2418 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) { 2419 aq_ret = I40E_ERR_PARAM; 2420 goto error_param; 2421 } 2422 2423 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) { 2424 aq_ret = I40E_ERR_PARAM; 2425 goto error_param; 2426 } 2427 2428 i40e_config_irq_link_list(vf, vsi_id, map); 2429 } 2430 error_param: 2431 /* send the response to the VF */ 2432 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP, 2433 aq_ret); 2434 } 2435 2436 /** 2437 * i40e_ctrl_vf_tx_rings 2438 * @vsi: the SRIOV VSI being configured 2439 * @q_map: bit map of the queues to be enabled 2440 * @enable: start or stop the queue 2441 **/ 2442 static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map, 2443 bool enable) 2444 { 2445 struct i40e_pf *pf = vsi->back; 2446 int ret = 0; 2447 u16 q_id; 2448 2449 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) { 2450 ret = i40e_control_wait_tx_q(vsi->seid, pf, 2451 vsi->base_queue + q_id, 2452 false /*is xdp*/, enable); 2453 if (ret) 2454 break; 2455 } 2456 return ret; 2457 } 2458 2459 /** 2460 * i40e_ctrl_vf_rx_rings 2461 * @vsi: the SRIOV VSI being configured 2462 * @q_map: bit map of the queues to be enabled 2463 * @enable: start or stop the queue 2464 **/ 2465 static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map, 2466 bool enable) 2467 { 2468 struct i40e_pf *pf = vsi->back; 2469 int ret = 0; 2470 u16 q_id; 2471 2472 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) { 2473 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id, 2474 enable); 2475 if (ret) 2476 break; 2477 } 2478 return ret; 2479 } 2480 2481 /** 2482 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL 2483 * @vqs: virtchnl_queue_select structure containing bitmaps to validate 2484 * 2485 * Returns true if validation was successful, else false. 2486 */ 2487 static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs) 2488 { 2489 if ((!vqs->rx_queues && !vqs->tx_queues) || 2490 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) || 2491 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES)) 2492 return false; 2493 2494 return true; 2495 } 2496 2497 /** 2498 * i40e_vc_enable_queues_msg 2499 * @vf: pointer to the VF info 2500 * @msg: pointer to the msg buffer 2501 * 2502 * called from the VF to enable all or specific queue(s) 2503 **/ 2504 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg) 2505 { 2506 struct virtchnl_queue_select *vqs = 2507 (struct virtchnl_queue_select *)msg; 2508 struct i40e_pf *pf = vf->pf; 2509 i40e_status aq_ret = 0; 2510 int i; 2511 2512 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) { 2513 aq_ret = I40E_ERR_PARAM; 2514 goto error_param; 2515 } 2516 2517 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { 2518 aq_ret = I40E_ERR_PARAM; 2519 goto error_param; 2520 } 2521 2522 if (!i40e_vc_validate_vqs_bitmaps(vqs)) { 2523 aq_ret = I40E_ERR_PARAM; 2524 goto error_param; 2525 } 2526 2527 /* Use the queue bit map sent by the VF */ 2528 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues, 2529 true)) { 2530 aq_ret = I40E_ERR_TIMEOUT; 2531 goto error_param; 2532 } 2533 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues, 2534 true)) { 2535 aq_ret = I40E_ERR_TIMEOUT; 2536 goto error_param; 2537 } 2538 2539 /* need to start the rings for additional ADq VSI's as well */ 2540 if (vf->adq_enabled) { 2541 /* zero belongs to LAN VSI */ 2542 for (i = 1; i < vf->num_tc; i++) { 2543 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx])) 2544 aq_ret = I40E_ERR_TIMEOUT; 2545 } 2546 } 2547 2548 error_param: 2549 /* send the response to the VF */ 2550 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES, 2551 aq_ret); 2552 } 2553 2554 /** 2555 * i40e_vc_disable_queues_msg 2556 * @vf: pointer to the VF info 2557 * @msg: pointer to the msg buffer 2558 * 2559 * called from the VF to disable all or specific 2560 * queue(s) 2561 **/ 2562 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg) 2563 { 2564 struct virtchnl_queue_select *vqs = 2565 (struct virtchnl_queue_select *)msg; 2566 struct i40e_pf *pf = vf->pf; 2567 i40e_status aq_ret = 0; 2568 2569 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 2570 aq_ret = I40E_ERR_PARAM; 2571 goto error_param; 2572 } 2573 2574 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { 2575 aq_ret = I40E_ERR_PARAM; 2576 goto error_param; 2577 } 2578 2579 if (!i40e_vc_validate_vqs_bitmaps(vqs)) { 2580 aq_ret = I40E_ERR_PARAM; 2581 goto error_param; 2582 } 2583 2584 /* Use the queue bit map sent by the VF */ 2585 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues, 2586 false)) { 2587 aq_ret = I40E_ERR_TIMEOUT; 2588 goto error_param; 2589 } 2590 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues, 2591 false)) { 2592 aq_ret = I40E_ERR_TIMEOUT; 2593 goto error_param; 2594 } 2595 error_param: 2596 /* send the response to the VF */ 2597 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES, 2598 aq_ret); 2599 } 2600 2601 /** 2602 * i40e_vc_request_queues_msg 2603 * @vf: pointer to the VF info 2604 * @msg: pointer to the msg buffer 2605 * 2606 * VFs get a default number of queues but can use this message to request a 2607 * different number. If the request is successful, PF will reset the VF and 2608 * return 0. If unsuccessful, PF will send message informing VF of number of 2609 * available queues and return result of sending VF a message. 2610 **/ 2611 static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg) 2612 { 2613 struct virtchnl_vf_res_request *vfres = 2614 (struct virtchnl_vf_res_request *)msg; 2615 u16 req_pairs = vfres->num_queue_pairs; 2616 u8 cur_pairs = vf->num_queue_pairs; 2617 struct i40e_pf *pf = vf->pf; 2618 2619 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) 2620 return -EINVAL; 2621 2622 if (req_pairs > I40E_MAX_VF_QUEUES) { 2623 dev_err(&pf->pdev->dev, 2624 "VF %d tried to request more than %d queues.\n", 2625 vf->vf_id, 2626 I40E_MAX_VF_QUEUES); 2627 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES; 2628 } else if (req_pairs - cur_pairs > pf->queues_left) { 2629 dev_warn(&pf->pdev->dev, 2630 "VF %d requested %d more queues, but only %d left.\n", 2631 vf->vf_id, 2632 req_pairs - cur_pairs, 2633 pf->queues_left); 2634 vfres->num_queue_pairs = pf->queues_left + cur_pairs; 2635 } else { 2636 /* successful request */ 2637 vf->num_req_queues = req_pairs; 2638 i40e_vc_reset_vf(vf, true); 2639 return 0; 2640 } 2641 2642 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0, 2643 (u8 *)vfres, sizeof(*vfres)); 2644 } 2645 2646 /** 2647 * i40e_vc_get_stats_msg 2648 * @vf: pointer to the VF info 2649 * @msg: pointer to the msg buffer 2650 * 2651 * called from the VF to get vsi stats 2652 **/ 2653 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg) 2654 { 2655 struct virtchnl_queue_select *vqs = 2656 (struct virtchnl_queue_select *)msg; 2657 struct i40e_pf *pf = vf->pf; 2658 struct i40e_eth_stats stats; 2659 i40e_status aq_ret = 0; 2660 struct i40e_vsi *vsi; 2661 2662 memset(&stats, 0, sizeof(struct i40e_eth_stats)); 2663 2664 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 2665 aq_ret = I40E_ERR_PARAM; 2666 goto error_param; 2667 } 2668 2669 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { 2670 aq_ret = I40E_ERR_PARAM; 2671 goto error_param; 2672 } 2673 2674 vsi = pf->vsi[vf->lan_vsi_idx]; 2675 if (!vsi) { 2676 aq_ret = I40E_ERR_PARAM; 2677 goto error_param; 2678 } 2679 i40e_update_eth_stats(vsi); 2680 stats = vsi->eth_stats; 2681 2682 error_param: 2683 /* send the response back to the VF */ 2684 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret, 2685 (u8 *)&stats, sizeof(stats)); 2686 } 2687 2688 /* If the VF is not trusted restrict the number of MAC/VLAN it can program 2689 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast 2690 */ 2691 #define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1) 2692 #define I40E_VC_MAX_VLAN_PER_VF 16 2693 2694 /** 2695 * i40e_check_vf_permission 2696 * @vf: pointer to the VF info 2697 * @al: MAC address list from virtchnl 2698 * 2699 * Check that the given list of MAC addresses is allowed. Will return -EPERM 2700 * if any address in the list is not valid. Checks the following conditions: 2701 * 2702 * 1) broadcast and zero addresses are never valid 2703 * 2) unicast addresses are not allowed if the VMM has administratively set 2704 * the VF MAC address, unless the VF is marked as privileged. 2705 * 3) There is enough space to add all the addresses. 2706 * 2707 * Note that to guarantee consistency, it is expected this function be called 2708 * while holding the mac_filter_hash_lock, as otherwise the current number of 2709 * addresses might not be accurate. 2710 **/ 2711 static inline int i40e_check_vf_permission(struct i40e_vf *vf, 2712 struct virtchnl_ether_addr_list *al) 2713 { 2714 struct i40e_pf *pf = vf->pf; 2715 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx]; 2716 int mac2add_cnt = 0; 2717 int i; 2718 2719 for (i = 0; i < al->num_elements; i++) { 2720 struct i40e_mac_filter *f; 2721 u8 *addr = al->list[i].addr; 2722 2723 if (is_broadcast_ether_addr(addr) || 2724 is_zero_ether_addr(addr)) { 2725 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", 2726 addr); 2727 return I40E_ERR_INVALID_MAC_ADDR; 2728 } 2729 2730 /* If the host VMM administrator has set the VF MAC address 2731 * administratively via the ndo_set_vf_mac command then deny 2732 * permission to the VF to add or delete unicast MAC addresses. 2733 * Unless the VF is privileged and then it can do whatever. 2734 * The VF may request to set the MAC address filter already 2735 * assigned to it so do not return an error in that case. 2736 */ 2737 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) && 2738 !is_multicast_ether_addr(addr) && vf->pf_set_mac && 2739 !ether_addr_equal(addr, vf->default_lan_addr.addr)) { 2740 dev_err(&pf->pdev->dev, 2741 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n"); 2742 return -EPERM; 2743 } 2744 2745 /*count filters that really will be added*/ 2746 f = i40e_find_mac(vsi, addr); 2747 if (!f) 2748 ++mac2add_cnt; 2749 } 2750 2751 /* If this VF is not privileged, then we can't add more than a limited 2752 * number of addresses. Check to make sure that the additions do not 2753 * push us over the limit. 2754 */ 2755 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) && 2756 (i40e_count_filters(vsi) + mac2add_cnt) > 2757 I40E_VC_MAX_MAC_ADDR_PER_VF) { 2758 dev_err(&pf->pdev->dev, 2759 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n"); 2760 return -EPERM; 2761 } 2762 return 0; 2763 } 2764 2765 /** 2766 * i40e_vc_add_mac_addr_msg 2767 * @vf: pointer to the VF info 2768 * @msg: pointer to the msg buffer 2769 * 2770 * add guest mac address filter 2771 **/ 2772 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg) 2773 { 2774 struct virtchnl_ether_addr_list *al = 2775 (struct virtchnl_ether_addr_list *)msg; 2776 struct i40e_pf *pf = vf->pf; 2777 struct i40e_vsi *vsi = NULL; 2778 i40e_status ret = 0; 2779 int i; 2780 2781 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) || 2782 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) { 2783 ret = I40E_ERR_PARAM; 2784 goto error_param; 2785 } 2786 2787 vsi = pf->vsi[vf->lan_vsi_idx]; 2788 2789 /* Lock once, because all function inside for loop accesses VSI's 2790 * MAC filter list which needs to be protected using same lock. 2791 */ 2792 spin_lock_bh(&vsi->mac_filter_hash_lock); 2793 2794 ret = i40e_check_vf_permission(vf, al); 2795 if (ret) { 2796 spin_unlock_bh(&vsi->mac_filter_hash_lock); 2797 goto error_param; 2798 } 2799 2800 /* add new addresses to the list */ 2801 for (i = 0; i < al->num_elements; i++) { 2802 struct i40e_mac_filter *f; 2803 2804 f = i40e_find_mac(vsi, al->list[i].addr); 2805 if (!f) { 2806 f = i40e_add_mac_filter(vsi, al->list[i].addr); 2807 2808 if (!f) { 2809 dev_err(&pf->pdev->dev, 2810 "Unable to add MAC filter %pM for VF %d\n", 2811 al->list[i].addr, vf->vf_id); 2812 ret = I40E_ERR_PARAM; 2813 spin_unlock_bh(&vsi->mac_filter_hash_lock); 2814 goto error_param; 2815 } 2816 if (is_valid_ether_addr(al->list[i].addr) && 2817 is_zero_ether_addr(vf->default_lan_addr.addr)) 2818 ether_addr_copy(vf->default_lan_addr.addr, 2819 al->list[i].addr); 2820 } 2821 } 2822 spin_unlock_bh(&vsi->mac_filter_hash_lock); 2823 2824 /* program the updated filter list */ 2825 ret = i40e_sync_vsi_filters(vsi); 2826 if (ret) 2827 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n", 2828 vf->vf_id, ret); 2829 2830 error_param: 2831 /* send the response to the VF */ 2832 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR, 2833 ret); 2834 } 2835 2836 /** 2837 * i40e_vc_del_mac_addr_msg 2838 * @vf: pointer to the VF info 2839 * @msg: pointer to the msg buffer 2840 * 2841 * remove guest mac address filter 2842 **/ 2843 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg) 2844 { 2845 struct virtchnl_ether_addr_list *al = 2846 (struct virtchnl_ether_addr_list *)msg; 2847 bool was_unimac_deleted = false; 2848 struct i40e_pf *pf = vf->pf; 2849 struct i40e_vsi *vsi = NULL; 2850 i40e_status ret = 0; 2851 int i; 2852 2853 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) || 2854 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) { 2855 ret = I40E_ERR_PARAM; 2856 goto error_param; 2857 } 2858 2859 for (i = 0; i < al->num_elements; i++) { 2860 if (is_broadcast_ether_addr(al->list[i].addr) || 2861 is_zero_ether_addr(al->list[i].addr)) { 2862 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n", 2863 al->list[i].addr, vf->vf_id); 2864 ret = I40E_ERR_INVALID_MAC_ADDR; 2865 goto error_param; 2866 } 2867 if (ether_addr_equal(al->list[i].addr, vf->default_lan_addr.addr)) 2868 was_unimac_deleted = true; 2869 } 2870 vsi = pf->vsi[vf->lan_vsi_idx]; 2871 2872 spin_lock_bh(&vsi->mac_filter_hash_lock); 2873 /* delete addresses from the list */ 2874 for (i = 0; i < al->num_elements; i++) 2875 if (i40e_del_mac_filter(vsi, al->list[i].addr)) { 2876 ret = I40E_ERR_INVALID_MAC_ADDR; 2877 spin_unlock_bh(&vsi->mac_filter_hash_lock); 2878 goto error_param; 2879 } 2880 2881 spin_unlock_bh(&vsi->mac_filter_hash_lock); 2882 2883 /* program the updated filter list */ 2884 ret = i40e_sync_vsi_filters(vsi); 2885 if (ret) 2886 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n", 2887 vf->vf_id, ret); 2888 2889 if (vf->trusted && was_unimac_deleted) { 2890 struct i40e_mac_filter *f; 2891 struct hlist_node *h; 2892 u8 *macaddr = NULL; 2893 int bkt; 2894 2895 /* set last unicast mac address as default */ 2896 spin_lock_bh(&vsi->mac_filter_hash_lock); 2897 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) { 2898 if (is_valid_ether_addr(f->macaddr)) 2899 macaddr = f->macaddr; 2900 } 2901 if (macaddr) 2902 ether_addr_copy(vf->default_lan_addr.addr, macaddr); 2903 spin_unlock_bh(&vsi->mac_filter_hash_lock); 2904 } 2905 error_param: 2906 /* send the response to the VF */ 2907 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret); 2908 } 2909 2910 /** 2911 * i40e_vc_add_vlan_msg 2912 * @vf: pointer to the VF info 2913 * @msg: pointer to the msg buffer 2914 * 2915 * program guest vlan id 2916 **/ 2917 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg) 2918 { 2919 struct virtchnl_vlan_filter_list *vfl = 2920 (struct virtchnl_vlan_filter_list *)msg; 2921 struct i40e_pf *pf = vf->pf; 2922 struct i40e_vsi *vsi = NULL; 2923 i40e_status aq_ret = 0; 2924 int i; 2925 2926 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) && 2927 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) { 2928 dev_err(&pf->pdev->dev, 2929 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n"); 2930 goto error_param; 2931 } 2932 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) || 2933 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) { 2934 aq_ret = I40E_ERR_PARAM; 2935 goto error_param; 2936 } 2937 2938 for (i = 0; i < vfl->num_elements; i++) { 2939 if (vfl->vlan_id[i] > I40E_MAX_VLANID) { 2940 aq_ret = I40E_ERR_PARAM; 2941 dev_err(&pf->pdev->dev, 2942 "invalid VF VLAN id %d\n", vfl->vlan_id[i]); 2943 goto error_param; 2944 } 2945 } 2946 vsi = pf->vsi[vf->lan_vsi_idx]; 2947 if (vsi->info.pvid) { 2948 aq_ret = I40E_ERR_PARAM; 2949 goto error_param; 2950 } 2951 2952 i40e_vlan_stripping_enable(vsi); 2953 for (i = 0; i < vfl->num_elements; i++) { 2954 /* add new VLAN filter */ 2955 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]); 2956 if (!ret) 2957 vf->num_vlan++; 2958 2959 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states)) 2960 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid, 2961 true, 2962 vfl->vlan_id[i], 2963 NULL); 2964 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states)) 2965 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid, 2966 true, 2967 vfl->vlan_id[i], 2968 NULL); 2969 2970 if (ret) 2971 dev_err(&pf->pdev->dev, 2972 "Unable to add VLAN filter %d for VF %d, error %d\n", 2973 vfl->vlan_id[i], vf->vf_id, ret); 2974 } 2975 2976 error_param: 2977 /* send the response to the VF */ 2978 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret); 2979 } 2980 2981 /** 2982 * i40e_vc_remove_vlan_msg 2983 * @vf: pointer to the VF info 2984 * @msg: pointer to the msg buffer 2985 * 2986 * remove programmed guest vlan id 2987 **/ 2988 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg) 2989 { 2990 struct virtchnl_vlan_filter_list *vfl = 2991 (struct virtchnl_vlan_filter_list *)msg; 2992 struct i40e_pf *pf = vf->pf; 2993 struct i40e_vsi *vsi = NULL; 2994 i40e_status aq_ret = 0; 2995 int i; 2996 2997 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) || 2998 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) { 2999 aq_ret = I40E_ERR_PARAM; 3000 goto error_param; 3001 } 3002 3003 for (i = 0; i < vfl->num_elements; i++) { 3004 if (vfl->vlan_id[i] > I40E_MAX_VLANID) { 3005 aq_ret = I40E_ERR_PARAM; 3006 goto error_param; 3007 } 3008 } 3009 3010 vsi = pf->vsi[vf->lan_vsi_idx]; 3011 if (vsi->info.pvid) { 3012 if (vfl->num_elements > 1 || vfl->vlan_id[0]) 3013 aq_ret = I40E_ERR_PARAM; 3014 goto error_param; 3015 } 3016 3017 for (i = 0; i < vfl->num_elements; i++) { 3018 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]); 3019 vf->num_vlan--; 3020 3021 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states)) 3022 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid, 3023 false, 3024 vfl->vlan_id[i], 3025 NULL); 3026 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states)) 3027 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid, 3028 false, 3029 vfl->vlan_id[i], 3030 NULL); 3031 } 3032 3033 error_param: 3034 /* send the response to the VF */ 3035 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret); 3036 } 3037 3038 /** 3039 * i40e_vc_iwarp_msg 3040 * @vf: pointer to the VF info 3041 * @msg: pointer to the msg buffer 3042 * @msglen: msg length 3043 * 3044 * called from the VF for the iwarp msgs 3045 **/ 3046 static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) 3047 { 3048 struct i40e_pf *pf = vf->pf; 3049 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id; 3050 i40e_status aq_ret = 0; 3051 3052 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) || 3053 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) { 3054 aq_ret = I40E_ERR_PARAM; 3055 goto error_param; 3056 } 3057 3058 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id, 3059 msg, msglen); 3060 3061 error_param: 3062 /* send the response to the VF */ 3063 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_IWARP, 3064 aq_ret); 3065 } 3066 3067 /** 3068 * i40e_vc_iwarp_qvmap_msg 3069 * @vf: pointer to the VF info 3070 * @msg: pointer to the msg buffer 3071 * @config: config qvmap or release it 3072 * 3073 * called from the VF for the iwarp msgs 3074 **/ 3075 static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config) 3076 { 3077 struct virtchnl_iwarp_qvlist_info *qvlist_info = 3078 (struct virtchnl_iwarp_qvlist_info *)msg; 3079 i40e_status aq_ret = 0; 3080 3081 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) || 3082 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) { 3083 aq_ret = I40E_ERR_PARAM; 3084 goto error_param; 3085 } 3086 3087 if (config) { 3088 if (i40e_config_iwarp_qvlist(vf, qvlist_info)) 3089 aq_ret = I40E_ERR_PARAM; 3090 } else { 3091 i40e_release_iwarp_qvlist(vf); 3092 } 3093 3094 error_param: 3095 /* send the response to the VF */ 3096 return i40e_vc_send_resp_to_vf(vf, 3097 config ? VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP : 3098 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP, 3099 aq_ret); 3100 } 3101 3102 /** 3103 * i40e_vc_config_rss_key 3104 * @vf: pointer to the VF info 3105 * @msg: pointer to the msg buffer 3106 * 3107 * Configure the VF's RSS key 3108 **/ 3109 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg) 3110 { 3111 struct virtchnl_rss_key *vrk = 3112 (struct virtchnl_rss_key *)msg; 3113 struct i40e_pf *pf = vf->pf; 3114 struct i40e_vsi *vsi = NULL; 3115 i40e_status aq_ret = 0; 3116 3117 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) || 3118 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) || 3119 vrk->key_len != I40E_HKEY_ARRAY_SIZE) { 3120 aq_ret = I40E_ERR_PARAM; 3121 goto err; 3122 } 3123 3124 vsi = pf->vsi[vf->lan_vsi_idx]; 3125 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0); 3126 err: 3127 /* send the response to the VF */ 3128 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY, 3129 aq_ret); 3130 } 3131 3132 /** 3133 * i40e_vc_config_rss_lut 3134 * @vf: pointer to the VF info 3135 * @msg: pointer to the msg buffer 3136 * 3137 * Configure the VF's RSS LUT 3138 **/ 3139 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg) 3140 { 3141 struct virtchnl_rss_lut *vrl = 3142 (struct virtchnl_rss_lut *)msg; 3143 struct i40e_pf *pf = vf->pf; 3144 struct i40e_vsi *vsi = NULL; 3145 i40e_status aq_ret = 0; 3146 u16 i; 3147 3148 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) || 3149 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) || 3150 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) { 3151 aq_ret = I40E_ERR_PARAM; 3152 goto err; 3153 } 3154 3155 for (i = 0; i < vrl->lut_entries; i++) 3156 if (vrl->lut[i] >= vf->num_queue_pairs) { 3157 aq_ret = I40E_ERR_PARAM; 3158 goto err; 3159 } 3160 3161 vsi = pf->vsi[vf->lan_vsi_idx]; 3162 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE); 3163 /* send the response to the VF */ 3164 err: 3165 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT, 3166 aq_ret); 3167 } 3168 3169 /** 3170 * i40e_vc_get_rss_hena 3171 * @vf: pointer to the VF info 3172 * @msg: pointer to the msg buffer 3173 * 3174 * Return the RSS HENA bits allowed by the hardware 3175 **/ 3176 static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg) 3177 { 3178 struct virtchnl_rss_hena *vrh = NULL; 3179 struct i40e_pf *pf = vf->pf; 3180 i40e_status aq_ret = 0; 3181 int len = 0; 3182 3183 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3184 aq_ret = I40E_ERR_PARAM; 3185 goto err; 3186 } 3187 len = sizeof(struct virtchnl_rss_hena); 3188 3189 vrh = kzalloc(len, GFP_KERNEL); 3190 if (!vrh) { 3191 aq_ret = I40E_ERR_NO_MEMORY; 3192 len = 0; 3193 goto err; 3194 } 3195 vrh->hena = i40e_pf_get_default_rss_hena(pf); 3196 err: 3197 /* send the response back to the VF */ 3198 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS, 3199 aq_ret, (u8 *)vrh, len); 3200 kfree(vrh); 3201 return aq_ret; 3202 } 3203 3204 /** 3205 * i40e_vc_set_rss_hena 3206 * @vf: pointer to the VF info 3207 * @msg: pointer to the msg buffer 3208 * 3209 * Set the RSS HENA bits for the VF 3210 **/ 3211 static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg) 3212 { 3213 struct virtchnl_rss_hena *vrh = 3214 (struct virtchnl_rss_hena *)msg; 3215 struct i40e_pf *pf = vf->pf; 3216 struct i40e_hw *hw = &pf->hw; 3217 i40e_status aq_ret = 0; 3218 3219 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3220 aq_ret = I40E_ERR_PARAM; 3221 goto err; 3222 } 3223 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena); 3224 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id), 3225 (u32)(vrh->hena >> 32)); 3226 3227 /* send the response to the VF */ 3228 err: 3229 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret); 3230 } 3231 3232 /** 3233 * i40e_vc_enable_vlan_stripping 3234 * @vf: pointer to the VF info 3235 * @msg: pointer to the msg buffer 3236 * 3237 * Enable vlan header stripping for the VF 3238 **/ 3239 static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg) 3240 { 3241 i40e_status aq_ret = 0; 3242 struct i40e_vsi *vsi; 3243 3244 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3245 aq_ret = I40E_ERR_PARAM; 3246 goto err; 3247 } 3248 3249 vsi = vf->pf->vsi[vf->lan_vsi_idx]; 3250 i40e_vlan_stripping_enable(vsi); 3251 3252 /* send the response to the VF */ 3253 err: 3254 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING, 3255 aq_ret); 3256 } 3257 3258 /** 3259 * i40e_vc_disable_vlan_stripping 3260 * @vf: pointer to the VF info 3261 * @msg: pointer to the msg buffer 3262 * 3263 * Disable vlan header stripping for the VF 3264 **/ 3265 static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg) 3266 { 3267 i40e_status aq_ret = 0; 3268 struct i40e_vsi *vsi; 3269 3270 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3271 aq_ret = I40E_ERR_PARAM; 3272 goto err; 3273 } 3274 3275 vsi = vf->pf->vsi[vf->lan_vsi_idx]; 3276 i40e_vlan_stripping_disable(vsi); 3277 3278 /* send the response to the VF */ 3279 err: 3280 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING, 3281 aq_ret); 3282 } 3283 3284 /** 3285 * i40e_validate_cloud_filter 3286 * @vf: pointer to VF structure 3287 * @tc_filter: pointer to filter requested 3288 * 3289 * This function validates cloud filter programmed as TC filter for ADq 3290 **/ 3291 static int i40e_validate_cloud_filter(struct i40e_vf *vf, 3292 struct virtchnl_filter *tc_filter) 3293 { 3294 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec; 3295 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec; 3296 struct i40e_pf *pf = vf->pf; 3297 struct i40e_vsi *vsi = NULL; 3298 struct i40e_mac_filter *f; 3299 struct hlist_node *h; 3300 bool found = false; 3301 int bkt; 3302 3303 if (!tc_filter->action) { 3304 dev_info(&pf->pdev->dev, 3305 "VF %d: Currently ADq doesn't support Drop Action\n", 3306 vf->vf_id); 3307 goto err; 3308 } 3309 3310 /* action_meta is TC number here to which the filter is applied */ 3311 if (!tc_filter->action_meta || 3312 tc_filter->action_meta > I40E_MAX_VF_VSI) { 3313 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n", 3314 vf->vf_id, tc_filter->action_meta); 3315 goto err; 3316 } 3317 3318 /* Check filter if it's programmed for advanced mode or basic mode. 3319 * There are two ADq modes (for VF only), 3320 * 1. Basic mode: intended to allow as many filter options as possible 3321 * to be added to a VF in Non-trusted mode. Main goal is 3322 * to add filters to its own MAC and VLAN id. 3323 * 2. Advanced mode: is for allowing filters to be applied other than 3324 * its own MAC or VLAN. This mode requires the VF to be 3325 * Trusted. 3326 */ 3327 if (mask.dst_mac[0] && !mask.dst_ip[0]) { 3328 vsi = pf->vsi[vf->lan_vsi_idx]; 3329 f = i40e_find_mac(vsi, data.dst_mac); 3330 3331 if (!f) { 3332 dev_info(&pf->pdev->dev, 3333 "Destination MAC %pM doesn't belong to VF %d\n", 3334 data.dst_mac, vf->vf_id); 3335 goto err; 3336 } 3337 3338 if (mask.vlan_id) { 3339 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, 3340 hlist) { 3341 if (f->vlan == ntohs(data.vlan_id)) { 3342 found = true; 3343 break; 3344 } 3345 } 3346 if (!found) { 3347 dev_info(&pf->pdev->dev, 3348 "VF %d doesn't have any VLAN id %u\n", 3349 vf->vf_id, ntohs(data.vlan_id)); 3350 goto err; 3351 } 3352 } 3353 } else { 3354 /* Check if VF is trusted */ 3355 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) { 3356 dev_err(&pf->pdev->dev, 3357 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n", 3358 vf->vf_id); 3359 return I40E_ERR_CONFIG; 3360 } 3361 } 3362 3363 if (mask.dst_mac[0] & data.dst_mac[0]) { 3364 if (is_broadcast_ether_addr(data.dst_mac) || 3365 is_zero_ether_addr(data.dst_mac)) { 3366 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n", 3367 vf->vf_id, data.dst_mac); 3368 goto err; 3369 } 3370 } 3371 3372 if (mask.src_mac[0] & data.src_mac[0]) { 3373 if (is_broadcast_ether_addr(data.src_mac) || 3374 is_zero_ether_addr(data.src_mac)) { 3375 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n", 3376 vf->vf_id, data.src_mac); 3377 goto err; 3378 } 3379 } 3380 3381 if (mask.dst_port & data.dst_port) { 3382 if (!data.dst_port) { 3383 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n", 3384 vf->vf_id); 3385 goto err; 3386 } 3387 } 3388 3389 if (mask.src_port & data.src_port) { 3390 if (!data.src_port) { 3391 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n", 3392 vf->vf_id); 3393 goto err; 3394 } 3395 } 3396 3397 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW && 3398 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) { 3399 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n", 3400 vf->vf_id); 3401 goto err; 3402 } 3403 3404 if (mask.vlan_id & data.vlan_id) { 3405 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) { 3406 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n", 3407 vf->vf_id); 3408 goto err; 3409 } 3410 } 3411 3412 return I40E_SUCCESS; 3413 err: 3414 return I40E_ERR_CONFIG; 3415 } 3416 3417 /** 3418 * i40e_find_vsi_from_seid - searches for the vsi with the given seid 3419 * @vf: pointer to the VF info 3420 * @seid: seid of the vsi it is searching for 3421 **/ 3422 static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid) 3423 { 3424 struct i40e_pf *pf = vf->pf; 3425 struct i40e_vsi *vsi = NULL; 3426 int i; 3427 3428 for (i = 0; i < vf->num_tc ; i++) { 3429 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id); 3430 if (vsi && vsi->seid == seid) 3431 return vsi; 3432 } 3433 return NULL; 3434 } 3435 3436 /** 3437 * i40e_del_all_cloud_filters 3438 * @vf: pointer to the VF info 3439 * 3440 * This function deletes all cloud filters 3441 **/ 3442 static void i40e_del_all_cloud_filters(struct i40e_vf *vf) 3443 { 3444 struct i40e_cloud_filter *cfilter = NULL; 3445 struct i40e_pf *pf = vf->pf; 3446 struct i40e_vsi *vsi = NULL; 3447 struct hlist_node *node; 3448 int ret; 3449 3450 hlist_for_each_entry_safe(cfilter, node, 3451 &vf->cloud_filter_list, cloud_node) { 3452 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid); 3453 3454 if (!vsi) { 3455 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n", 3456 vf->vf_id, cfilter->seid); 3457 continue; 3458 } 3459 3460 if (cfilter->dst_port) 3461 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, 3462 false); 3463 else 3464 ret = i40e_add_del_cloud_filter(vsi, cfilter, false); 3465 if (ret) 3466 dev_err(&pf->pdev->dev, 3467 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n", 3468 vf->vf_id, i40e_stat_str(&pf->hw, ret), 3469 i40e_aq_str(&pf->hw, 3470 pf->hw.aq.asq_last_status)); 3471 3472 hlist_del(&cfilter->cloud_node); 3473 kfree(cfilter); 3474 vf->num_cloud_filters--; 3475 } 3476 } 3477 3478 /** 3479 * i40e_vc_del_cloud_filter 3480 * @vf: pointer to the VF info 3481 * @msg: pointer to the msg buffer 3482 * 3483 * This function deletes a cloud filter programmed as TC filter for ADq 3484 **/ 3485 static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg) 3486 { 3487 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg; 3488 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec; 3489 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec; 3490 struct i40e_cloud_filter cfilter, *cf = NULL; 3491 struct i40e_pf *pf = vf->pf; 3492 struct i40e_vsi *vsi = NULL; 3493 struct hlist_node *node; 3494 i40e_status aq_ret = 0; 3495 int i, ret; 3496 3497 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3498 aq_ret = I40E_ERR_PARAM; 3499 goto err; 3500 } 3501 3502 if (!vf->adq_enabled) { 3503 dev_info(&pf->pdev->dev, 3504 "VF %d: ADq not enabled, can't apply cloud filter\n", 3505 vf->vf_id); 3506 aq_ret = I40E_ERR_PARAM; 3507 goto err; 3508 } 3509 3510 if (i40e_validate_cloud_filter(vf, vcf)) { 3511 dev_info(&pf->pdev->dev, 3512 "VF %d: Invalid input, can't apply cloud filter\n", 3513 vf->vf_id); 3514 aq_ret = I40E_ERR_PARAM; 3515 goto err; 3516 } 3517 3518 memset(&cfilter, 0, sizeof(cfilter)); 3519 /* parse destination mac address */ 3520 for (i = 0; i < ETH_ALEN; i++) 3521 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i]; 3522 3523 /* parse source mac address */ 3524 for (i = 0; i < ETH_ALEN; i++) 3525 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i]; 3526 3527 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id; 3528 cfilter.dst_port = mask.dst_port & tcf.dst_port; 3529 cfilter.src_port = mask.src_port & tcf.src_port; 3530 3531 switch (vcf->flow_type) { 3532 case VIRTCHNL_TCP_V4_FLOW: 3533 cfilter.n_proto = ETH_P_IP; 3534 if (mask.dst_ip[0] & tcf.dst_ip[0]) 3535 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip, 3536 ARRAY_SIZE(tcf.dst_ip)); 3537 else if (mask.src_ip[0] & tcf.dst_ip[0]) 3538 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip, 3539 ARRAY_SIZE(tcf.dst_ip)); 3540 break; 3541 case VIRTCHNL_TCP_V6_FLOW: 3542 cfilter.n_proto = ETH_P_IPV6; 3543 if (mask.dst_ip[3] & tcf.dst_ip[3]) 3544 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip, 3545 sizeof(cfilter.ip.v6.dst_ip6)); 3546 if (mask.src_ip[3] & tcf.src_ip[3]) 3547 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip, 3548 sizeof(cfilter.ip.v6.src_ip6)); 3549 break; 3550 default: 3551 /* TC filter can be configured based on different combinations 3552 * and in this case IP is not a part of filter config 3553 */ 3554 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n", 3555 vf->vf_id); 3556 } 3557 3558 /* get the vsi to which the tc belongs to */ 3559 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx]; 3560 cfilter.seid = vsi->seid; 3561 cfilter.flags = vcf->field_flags; 3562 3563 /* Deleting TC filter */ 3564 if (tcf.dst_port) 3565 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false); 3566 else 3567 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false); 3568 if (ret) { 3569 dev_err(&pf->pdev->dev, 3570 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n", 3571 vf->vf_id, i40e_stat_str(&pf->hw, ret), 3572 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status)); 3573 goto err; 3574 } 3575 3576 hlist_for_each_entry_safe(cf, node, 3577 &vf->cloud_filter_list, cloud_node) { 3578 if (cf->seid != cfilter.seid) 3579 continue; 3580 if (mask.dst_port) 3581 if (cfilter.dst_port != cf->dst_port) 3582 continue; 3583 if (mask.dst_mac[0]) 3584 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac)) 3585 continue; 3586 /* for ipv4 data to be valid, only first byte of mask is set */ 3587 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0]) 3588 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip, 3589 ARRAY_SIZE(tcf.dst_ip))) 3590 continue; 3591 /* for ipv6, mask is set for all sixteen bytes (4 words) */ 3592 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3]) 3593 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6, 3594 sizeof(cfilter.ip.v6.src_ip6))) 3595 continue; 3596 if (mask.vlan_id) 3597 if (cfilter.vlan_id != cf->vlan_id) 3598 continue; 3599 3600 hlist_del(&cf->cloud_node); 3601 kfree(cf); 3602 vf->num_cloud_filters--; 3603 } 3604 3605 err: 3606 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER, 3607 aq_ret); 3608 } 3609 3610 /** 3611 * i40e_vc_add_cloud_filter 3612 * @vf: pointer to the VF info 3613 * @msg: pointer to the msg buffer 3614 * 3615 * This function adds a cloud filter programmed as TC filter for ADq 3616 **/ 3617 static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg) 3618 { 3619 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg; 3620 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec; 3621 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec; 3622 struct i40e_cloud_filter *cfilter = NULL; 3623 struct i40e_pf *pf = vf->pf; 3624 struct i40e_vsi *vsi = NULL; 3625 i40e_status aq_ret = 0; 3626 int i, ret; 3627 3628 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3629 aq_ret = I40E_ERR_PARAM; 3630 goto err_out; 3631 } 3632 3633 if (!vf->adq_enabled) { 3634 dev_info(&pf->pdev->dev, 3635 "VF %d: ADq is not enabled, can't apply cloud filter\n", 3636 vf->vf_id); 3637 aq_ret = I40E_ERR_PARAM; 3638 goto err_out; 3639 } 3640 3641 if (i40e_validate_cloud_filter(vf, vcf)) { 3642 dev_info(&pf->pdev->dev, 3643 "VF %d: Invalid input/s, can't apply cloud filter\n", 3644 vf->vf_id); 3645 aq_ret = I40E_ERR_PARAM; 3646 goto err_out; 3647 } 3648 3649 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL); 3650 if (!cfilter) 3651 return -ENOMEM; 3652 3653 /* parse destination mac address */ 3654 for (i = 0; i < ETH_ALEN; i++) 3655 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i]; 3656 3657 /* parse source mac address */ 3658 for (i = 0; i < ETH_ALEN; i++) 3659 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i]; 3660 3661 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id; 3662 cfilter->dst_port = mask.dst_port & tcf.dst_port; 3663 cfilter->src_port = mask.src_port & tcf.src_port; 3664 3665 switch (vcf->flow_type) { 3666 case VIRTCHNL_TCP_V4_FLOW: 3667 cfilter->n_proto = ETH_P_IP; 3668 if (mask.dst_ip[0] & tcf.dst_ip[0]) 3669 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip, 3670 ARRAY_SIZE(tcf.dst_ip)); 3671 else if (mask.src_ip[0] & tcf.dst_ip[0]) 3672 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip, 3673 ARRAY_SIZE(tcf.dst_ip)); 3674 break; 3675 case VIRTCHNL_TCP_V6_FLOW: 3676 cfilter->n_proto = ETH_P_IPV6; 3677 if (mask.dst_ip[3] & tcf.dst_ip[3]) 3678 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip, 3679 sizeof(cfilter->ip.v6.dst_ip6)); 3680 if (mask.src_ip[3] & tcf.src_ip[3]) 3681 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip, 3682 sizeof(cfilter->ip.v6.src_ip6)); 3683 break; 3684 default: 3685 /* TC filter can be configured based on different combinations 3686 * and in this case IP is not a part of filter config 3687 */ 3688 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n", 3689 vf->vf_id); 3690 } 3691 3692 /* get the VSI to which the TC belongs to */ 3693 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx]; 3694 cfilter->seid = vsi->seid; 3695 cfilter->flags = vcf->field_flags; 3696 3697 /* Adding cloud filter programmed as TC filter */ 3698 if (tcf.dst_port) 3699 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true); 3700 else 3701 ret = i40e_add_del_cloud_filter(vsi, cfilter, true); 3702 if (ret) { 3703 dev_err(&pf->pdev->dev, 3704 "VF %d: Failed to add cloud filter, err %s aq_err %s\n", 3705 vf->vf_id, i40e_stat_str(&pf->hw, ret), 3706 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status)); 3707 goto err_free; 3708 } 3709 3710 INIT_HLIST_NODE(&cfilter->cloud_node); 3711 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list); 3712 /* release the pointer passing it to the collection */ 3713 cfilter = NULL; 3714 vf->num_cloud_filters++; 3715 err_free: 3716 kfree(cfilter); 3717 err_out: 3718 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER, 3719 aq_ret); 3720 } 3721 3722 /** 3723 * i40e_vc_add_qch_msg: Add queue channel and enable ADq 3724 * @vf: pointer to the VF info 3725 * @msg: pointer to the msg buffer 3726 **/ 3727 static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg) 3728 { 3729 struct virtchnl_tc_info *tci = 3730 (struct virtchnl_tc_info *)msg; 3731 struct i40e_pf *pf = vf->pf; 3732 struct i40e_link_status *ls = &pf->hw.phy.link_info; 3733 int i, adq_request_qps = 0; 3734 i40e_status aq_ret = 0; 3735 u64 speed = 0; 3736 3737 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3738 aq_ret = I40E_ERR_PARAM; 3739 goto err; 3740 } 3741 3742 /* ADq cannot be applied if spoof check is ON */ 3743 if (vf->spoofchk) { 3744 dev_err(&pf->pdev->dev, 3745 "Spoof check is ON, turn it OFF to enable ADq\n"); 3746 aq_ret = I40E_ERR_PARAM; 3747 goto err; 3748 } 3749 3750 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) { 3751 dev_err(&pf->pdev->dev, 3752 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n", 3753 vf->vf_id); 3754 aq_ret = I40E_ERR_PARAM; 3755 goto err; 3756 } 3757 3758 /* max number of traffic classes for VF currently capped at 4 */ 3759 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) { 3760 dev_err(&pf->pdev->dev, 3761 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n", 3762 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI); 3763 aq_ret = I40E_ERR_PARAM; 3764 goto err; 3765 } 3766 3767 /* validate queues for each TC */ 3768 for (i = 0; i < tci->num_tc; i++) 3769 if (!tci->list[i].count || 3770 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) { 3771 dev_err(&pf->pdev->dev, 3772 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n", 3773 vf->vf_id, i, tci->list[i].count, 3774 I40E_DEFAULT_QUEUES_PER_VF); 3775 aq_ret = I40E_ERR_PARAM; 3776 goto err; 3777 } 3778 3779 /* need Max VF queues but already have default number of queues */ 3780 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF; 3781 3782 if (pf->queues_left < adq_request_qps) { 3783 dev_err(&pf->pdev->dev, 3784 "No queues left to allocate to VF %d\n", 3785 vf->vf_id); 3786 aq_ret = I40E_ERR_PARAM; 3787 goto err; 3788 } else { 3789 /* we need to allocate max VF queues to enable ADq so as to 3790 * make sure ADq enabled VF always gets back queues when it 3791 * goes through a reset. 3792 */ 3793 vf->num_queue_pairs = I40E_MAX_VF_QUEUES; 3794 } 3795 3796 /* get link speed in MB to validate rate limit */ 3797 speed = i40e_vc_link_speed2mbps(ls->link_speed); 3798 if (speed == SPEED_UNKNOWN) { 3799 dev_err(&pf->pdev->dev, 3800 "Cannot detect link speed\n"); 3801 aq_ret = I40E_ERR_PARAM; 3802 goto err; 3803 } 3804 3805 /* parse data from the queue channel info */ 3806 vf->num_tc = tci->num_tc; 3807 for (i = 0; i < vf->num_tc; i++) { 3808 if (tci->list[i].max_tx_rate) { 3809 if (tci->list[i].max_tx_rate > speed) { 3810 dev_err(&pf->pdev->dev, 3811 "Invalid max tx rate %llu specified for VF %d.", 3812 tci->list[i].max_tx_rate, 3813 vf->vf_id); 3814 aq_ret = I40E_ERR_PARAM; 3815 goto err; 3816 } else { 3817 vf->ch[i].max_tx_rate = 3818 tci->list[i].max_tx_rate; 3819 } 3820 } 3821 vf->ch[i].num_qps = tci->list[i].count; 3822 } 3823 3824 /* set this flag only after making sure all inputs are sane */ 3825 vf->adq_enabled = true; 3826 3827 /* reset the VF in order to allocate resources */ 3828 i40e_vc_reset_vf(vf, true); 3829 3830 return I40E_SUCCESS; 3831 3832 /* send the response to the VF */ 3833 err: 3834 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS, 3835 aq_ret); 3836 } 3837 3838 /** 3839 * i40e_vc_del_qch_msg 3840 * @vf: pointer to the VF info 3841 * @msg: pointer to the msg buffer 3842 **/ 3843 static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg) 3844 { 3845 struct i40e_pf *pf = vf->pf; 3846 i40e_status aq_ret = 0; 3847 3848 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) { 3849 aq_ret = I40E_ERR_PARAM; 3850 goto err; 3851 } 3852 3853 if (vf->adq_enabled) { 3854 i40e_del_all_cloud_filters(vf); 3855 i40e_del_qch(vf); 3856 vf->adq_enabled = false; 3857 vf->num_tc = 0; 3858 dev_info(&pf->pdev->dev, 3859 "Deleting Queue Channels and cloud filters for ADq on VF %d\n", 3860 vf->vf_id); 3861 } else { 3862 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n", 3863 vf->vf_id); 3864 aq_ret = I40E_ERR_PARAM; 3865 } 3866 3867 /* reset the VF in order to allocate resources */ 3868 i40e_vc_reset_vf(vf, true); 3869 3870 return I40E_SUCCESS; 3871 3872 err: 3873 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS, 3874 aq_ret); 3875 } 3876 3877 /** 3878 * i40e_vc_process_vf_msg 3879 * @pf: pointer to the PF structure 3880 * @vf_id: source VF id 3881 * @v_opcode: operation code 3882 * @v_retval: unused return value code 3883 * @msg: pointer to the msg buffer 3884 * @msglen: msg length 3885 * 3886 * called from the common aeq/arq handler to 3887 * process request from VF 3888 **/ 3889 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode, 3890 u32 __always_unused v_retval, u8 *msg, u16 msglen) 3891 { 3892 struct i40e_hw *hw = &pf->hw; 3893 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id; 3894 struct i40e_vf *vf; 3895 int ret; 3896 3897 pf->vf_aq_requests++; 3898 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs) 3899 return -EINVAL; 3900 vf = &(pf->vf[local_vf_id]); 3901 3902 /* Check if VF is disabled. */ 3903 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states)) 3904 return I40E_ERR_PARAM; 3905 3906 /* perform basic checks on the msg */ 3907 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen); 3908 3909 if (ret) { 3910 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM); 3911 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n", 3912 local_vf_id, v_opcode, msglen); 3913 switch (ret) { 3914 case VIRTCHNL_STATUS_ERR_PARAM: 3915 return -EPERM; 3916 default: 3917 return -EINVAL; 3918 } 3919 } 3920 3921 switch (v_opcode) { 3922 case VIRTCHNL_OP_VERSION: 3923 ret = i40e_vc_get_version_msg(vf, msg); 3924 break; 3925 case VIRTCHNL_OP_GET_VF_RESOURCES: 3926 ret = i40e_vc_get_vf_resources_msg(vf, msg); 3927 i40e_vc_notify_vf_link_state(vf); 3928 break; 3929 case VIRTCHNL_OP_RESET_VF: 3930 i40e_vc_reset_vf(vf, false); 3931 ret = 0; 3932 break; 3933 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE: 3934 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg); 3935 break; 3936 case VIRTCHNL_OP_CONFIG_VSI_QUEUES: 3937 ret = i40e_vc_config_queues_msg(vf, msg); 3938 break; 3939 case VIRTCHNL_OP_CONFIG_IRQ_MAP: 3940 ret = i40e_vc_config_irq_map_msg(vf, msg); 3941 break; 3942 case VIRTCHNL_OP_ENABLE_QUEUES: 3943 ret = i40e_vc_enable_queues_msg(vf, msg); 3944 i40e_vc_notify_vf_link_state(vf); 3945 break; 3946 case VIRTCHNL_OP_DISABLE_QUEUES: 3947 ret = i40e_vc_disable_queues_msg(vf, msg); 3948 break; 3949 case VIRTCHNL_OP_ADD_ETH_ADDR: 3950 ret = i40e_vc_add_mac_addr_msg(vf, msg); 3951 break; 3952 case VIRTCHNL_OP_DEL_ETH_ADDR: 3953 ret = i40e_vc_del_mac_addr_msg(vf, msg); 3954 break; 3955 case VIRTCHNL_OP_ADD_VLAN: 3956 ret = i40e_vc_add_vlan_msg(vf, msg); 3957 break; 3958 case VIRTCHNL_OP_DEL_VLAN: 3959 ret = i40e_vc_remove_vlan_msg(vf, msg); 3960 break; 3961 case VIRTCHNL_OP_GET_STATS: 3962 ret = i40e_vc_get_stats_msg(vf, msg); 3963 break; 3964 case VIRTCHNL_OP_IWARP: 3965 ret = i40e_vc_iwarp_msg(vf, msg, msglen); 3966 break; 3967 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP: 3968 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, true); 3969 break; 3970 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP: 3971 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, false); 3972 break; 3973 case VIRTCHNL_OP_CONFIG_RSS_KEY: 3974 ret = i40e_vc_config_rss_key(vf, msg); 3975 break; 3976 case VIRTCHNL_OP_CONFIG_RSS_LUT: 3977 ret = i40e_vc_config_rss_lut(vf, msg); 3978 break; 3979 case VIRTCHNL_OP_GET_RSS_HENA_CAPS: 3980 ret = i40e_vc_get_rss_hena(vf, msg); 3981 break; 3982 case VIRTCHNL_OP_SET_RSS_HENA: 3983 ret = i40e_vc_set_rss_hena(vf, msg); 3984 break; 3985 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING: 3986 ret = i40e_vc_enable_vlan_stripping(vf, msg); 3987 break; 3988 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING: 3989 ret = i40e_vc_disable_vlan_stripping(vf, msg); 3990 break; 3991 case VIRTCHNL_OP_REQUEST_QUEUES: 3992 ret = i40e_vc_request_queues_msg(vf, msg); 3993 break; 3994 case VIRTCHNL_OP_ENABLE_CHANNELS: 3995 ret = i40e_vc_add_qch_msg(vf, msg); 3996 break; 3997 case VIRTCHNL_OP_DISABLE_CHANNELS: 3998 ret = i40e_vc_del_qch_msg(vf, msg); 3999 break; 4000 case VIRTCHNL_OP_ADD_CLOUD_FILTER: 4001 ret = i40e_vc_add_cloud_filter(vf, msg); 4002 break; 4003 case VIRTCHNL_OP_DEL_CLOUD_FILTER: 4004 ret = i40e_vc_del_cloud_filter(vf, msg); 4005 break; 4006 case VIRTCHNL_OP_UNKNOWN: 4007 default: 4008 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n", 4009 v_opcode, local_vf_id); 4010 ret = i40e_vc_send_resp_to_vf(vf, v_opcode, 4011 I40E_ERR_NOT_IMPLEMENTED); 4012 break; 4013 } 4014 4015 return ret; 4016 } 4017 4018 /** 4019 * i40e_vc_process_vflr_event 4020 * @pf: pointer to the PF structure 4021 * 4022 * called from the vlfr irq handler to 4023 * free up VF resources and state variables 4024 **/ 4025 int i40e_vc_process_vflr_event(struct i40e_pf *pf) 4026 { 4027 struct i40e_hw *hw = &pf->hw; 4028 u32 reg, reg_idx, bit_idx; 4029 struct i40e_vf *vf; 4030 int vf_id; 4031 4032 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state)) 4033 return 0; 4034 4035 /* Re-enable the VFLR interrupt cause here, before looking for which 4036 * VF got reset. Otherwise, if another VF gets a reset while the 4037 * first one is being processed, that interrupt will be lost, and 4038 * that VF will be stuck in reset forever. 4039 */ 4040 reg = rd32(hw, I40E_PFINT_ICR0_ENA); 4041 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK; 4042 wr32(hw, I40E_PFINT_ICR0_ENA, reg); 4043 i40e_flush(hw); 4044 4045 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state); 4046 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) { 4047 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32; 4048 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32; 4049 /* read GLGEN_VFLRSTAT register to find out the flr VFs */ 4050 vf = &pf->vf[vf_id]; 4051 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx)); 4052 if (reg & BIT(bit_idx)) 4053 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */ 4054 i40e_reset_vf(vf, true); 4055 } 4056 4057 return 0; 4058 } 4059 4060 /** 4061 * i40e_validate_vf 4062 * @pf: the physical function 4063 * @vf_id: VF identifier 4064 * 4065 * Check that the VF is enabled and the VSI exists. 4066 * 4067 * Returns 0 on success, negative on failure 4068 **/ 4069 static int i40e_validate_vf(struct i40e_pf *pf, int vf_id) 4070 { 4071 struct i40e_vsi *vsi; 4072 struct i40e_vf *vf; 4073 int ret = 0; 4074 4075 if (vf_id >= pf->num_alloc_vfs) { 4076 dev_err(&pf->pdev->dev, 4077 "Invalid VF Identifier %d\n", vf_id); 4078 ret = -EINVAL; 4079 goto err_out; 4080 } 4081 vf = &pf->vf[vf_id]; 4082 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id); 4083 if (!vsi) 4084 ret = -EINVAL; 4085 err_out: 4086 return ret; 4087 } 4088 4089 /** 4090 * i40e_ndo_set_vf_mac 4091 * @netdev: network interface device structure 4092 * @vf_id: VF identifier 4093 * @mac: mac address 4094 * 4095 * program VF mac address 4096 **/ 4097 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac) 4098 { 4099 struct i40e_netdev_priv *np = netdev_priv(netdev); 4100 struct i40e_vsi *vsi = np->vsi; 4101 struct i40e_pf *pf = vsi->back; 4102 struct i40e_mac_filter *f; 4103 struct i40e_vf *vf; 4104 int ret = 0; 4105 struct hlist_node *h; 4106 int bkt; 4107 u8 i; 4108 4109 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4110 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4111 return -EAGAIN; 4112 } 4113 4114 /* validate the request */ 4115 ret = i40e_validate_vf(pf, vf_id); 4116 if (ret) 4117 goto error_param; 4118 4119 vf = &pf->vf[vf_id]; 4120 4121 /* When the VF is resetting wait until it is done. 4122 * It can take up to 200 milliseconds, 4123 * but wait for up to 300 milliseconds to be safe. 4124 * Acquire the VSI pointer only after the VF has been 4125 * properly initialized. 4126 */ 4127 for (i = 0; i < 15; i++) { 4128 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) 4129 break; 4130 msleep(20); 4131 } 4132 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) { 4133 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n", 4134 vf_id); 4135 ret = -EAGAIN; 4136 goto error_param; 4137 } 4138 vsi = pf->vsi[vf->lan_vsi_idx]; 4139 4140 if (is_multicast_ether_addr(mac)) { 4141 dev_err(&pf->pdev->dev, 4142 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id); 4143 ret = -EINVAL; 4144 goto error_param; 4145 } 4146 4147 /* Lock once because below invoked function add/del_filter requires 4148 * mac_filter_hash_lock to be held 4149 */ 4150 spin_lock_bh(&vsi->mac_filter_hash_lock); 4151 4152 /* delete the temporary mac address */ 4153 if (!is_zero_ether_addr(vf->default_lan_addr.addr)) 4154 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr); 4155 4156 /* Delete all the filters for this VSI - we're going to kill it 4157 * anyway. 4158 */ 4159 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) 4160 __i40e_del_filter(vsi, f); 4161 4162 spin_unlock_bh(&vsi->mac_filter_hash_lock); 4163 4164 /* program mac filter */ 4165 if (i40e_sync_vsi_filters(vsi)) { 4166 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n"); 4167 ret = -EIO; 4168 goto error_param; 4169 } 4170 ether_addr_copy(vf->default_lan_addr.addr, mac); 4171 4172 if (is_zero_ether_addr(mac)) { 4173 vf->pf_set_mac = false; 4174 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id); 4175 } else { 4176 vf->pf_set_mac = true; 4177 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n", 4178 mac, vf_id); 4179 } 4180 4181 /* Force the VF interface down so it has to bring up with new MAC 4182 * address 4183 */ 4184 i40e_vc_reset_vf(vf, true); 4185 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n"); 4186 4187 error_param: 4188 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4189 return ret; 4190 } 4191 4192 /** 4193 * i40e_ndo_set_vf_port_vlan 4194 * @netdev: network interface device structure 4195 * @vf_id: VF identifier 4196 * @vlan_id: mac address 4197 * @qos: priority setting 4198 * @vlan_proto: vlan protocol 4199 * 4200 * program VF vlan id and/or qos 4201 **/ 4202 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id, 4203 u16 vlan_id, u8 qos, __be16 vlan_proto) 4204 { 4205 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT); 4206 struct i40e_netdev_priv *np = netdev_priv(netdev); 4207 bool allmulti = false, alluni = false; 4208 struct i40e_pf *pf = np->vsi->back; 4209 struct i40e_vsi *vsi; 4210 struct i40e_vf *vf; 4211 int ret = 0; 4212 4213 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4214 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4215 return -EAGAIN; 4216 } 4217 4218 /* validate the request */ 4219 ret = i40e_validate_vf(pf, vf_id); 4220 if (ret) 4221 goto error_pvid; 4222 4223 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) { 4224 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n"); 4225 ret = -EINVAL; 4226 goto error_pvid; 4227 } 4228 4229 if (vlan_proto != htons(ETH_P_8021Q)) { 4230 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n"); 4231 ret = -EPROTONOSUPPORT; 4232 goto error_pvid; 4233 } 4234 4235 vf = &pf->vf[vf_id]; 4236 vsi = pf->vsi[vf->lan_vsi_idx]; 4237 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) { 4238 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n", 4239 vf_id); 4240 ret = -EAGAIN; 4241 goto error_pvid; 4242 } 4243 4244 if (le16_to_cpu(vsi->info.pvid) == vlanprio) 4245 /* duplicate request, so just return success */ 4246 goto error_pvid; 4247 4248 i40e_vc_reset_vf(vf, true); 4249 /* During reset the VF got a new VSI, so refresh a pointer. */ 4250 vsi = pf->vsi[vf->lan_vsi_idx]; 4251 /* Locked once because multiple functions below iterate list */ 4252 spin_lock_bh(&vsi->mac_filter_hash_lock); 4253 4254 /* Check for condition where there was already a port VLAN ID 4255 * filter set and now it is being deleted by setting it to zero. 4256 * Additionally check for the condition where there was a port 4257 * VLAN but now there is a new and different port VLAN being set. 4258 * Before deleting all the old VLAN filters we must add new ones 4259 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our 4260 * MAC addresses deleted. 4261 */ 4262 if ((!(vlan_id || qos) || 4263 vlanprio != le16_to_cpu(vsi->info.pvid)) && 4264 vsi->info.pvid) { 4265 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY); 4266 if (ret) { 4267 dev_info(&vsi->back->pdev->dev, 4268 "add VF VLAN failed, ret=%d aq_err=%d\n", ret, 4269 vsi->back->hw.aq.asq_last_status); 4270 spin_unlock_bh(&vsi->mac_filter_hash_lock); 4271 goto error_pvid; 4272 } 4273 } 4274 4275 if (vsi->info.pvid) { 4276 /* remove all filters on the old VLAN */ 4277 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) & 4278 VLAN_VID_MASK)); 4279 } 4280 4281 spin_unlock_bh(&vsi->mac_filter_hash_lock); 4282 4283 /* disable promisc modes in case they were enabled */ 4284 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, 4285 allmulti, alluni); 4286 if (ret) { 4287 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n"); 4288 goto error_pvid; 4289 } 4290 4291 if (vlan_id || qos) 4292 ret = i40e_vsi_add_pvid(vsi, vlanprio); 4293 else 4294 i40e_vsi_remove_pvid(vsi); 4295 spin_lock_bh(&vsi->mac_filter_hash_lock); 4296 4297 if (vlan_id) { 4298 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n", 4299 vlan_id, qos, vf_id); 4300 4301 /* add new VLAN filter for each MAC */ 4302 ret = i40e_add_vlan_all_mac(vsi, vlan_id); 4303 if (ret) { 4304 dev_info(&vsi->back->pdev->dev, 4305 "add VF VLAN failed, ret=%d aq_err=%d\n", ret, 4306 vsi->back->hw.aq.asq_last_status); 4307 spin_unlock_bh(&vsi->mac_filter_hash_lock); 4308 goto error_pvid; 4309 } 4310 4311 /* remove the previously added non-VLAN MAC filters */ 4312 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY); 4313 } 4314 4315 spin_unlock_bh(&vsi->mac_filter_hash_lock); 4316 4317 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states)) 4318 alluni = true; 4319 4320 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states)) 4321 allmulti = true; 4322 4323 /* Schedule the worker thread to take care of applying changes */ 4324 i40e_service_event_schedule(vsi->back); 4325 4326 if (ret) { 4327 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n"); 4328 goto error_pvid; 4329 } 4330 4331 /* The Port VLAN needs to be saved across resets the same as the 4332 * default LAN MAC address. 4333 */ 4334 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid); 4335 4336 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni); 4337 if (ret) { 4338 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n"); 4339 goto error_pvid; 4340 } 4341 4342 ret = 0; 4343 4344 error_pvid: 4345 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4346 return ret; 4347 } 4348 4349 /** 4350 * i40e_ndo_set_vf_bw 4351 * @netdev: network interface device structure 4352 * @vf_id: VF identifier 4353 * @min_tx_rate: Minimum Tx rate 4354 * @max_tx_rate: Maximum Tx rate 4355 * 4356 * configure VF Tx rate 4357 **/ 4358 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate, 4359 int max_tx_rate) 4360 { 4361 struct i40e_netdev_priv *np = netdev_priv(netdev); 4362 struct i40e_pf *pf = np->vsi->back; 4363 struct i40e_vsi *vsi; 4364 struct i40e_vf *vf; 4365 int ret = 0; 4366 4367 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4368 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4369 return -EAGAIN; 4370 } 4371 4372 /* validate the request */ 4373 ret = i40e_validate_vf(pf, vf_id); 4374 if (ret) 4375 goto error; 4376 4377 if (min_tx_rate) { 4378 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n", 4379 min_tx_rate, vf_id); 4380 ret = -EINVAL; 4381 goto error; 4382 } 4383 4384 vf = &pf->vf[vf_id]; 4385 vsi = pf->vsi[vf->lan_vsi_idx]; 4386 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) { 4387 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n", 4388 vf_id); 4389 ret = -EAGAIN; 4390 goto error; 4391 } 4392 4393 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate); 4394 if (ret) 4395 goto error; 4396 4397 vf->tx_rate = max_tx_rate; 4398 error: 4399 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4400 return ret; 4401 } 4402 4403 /** 4404 * i40e_ndo_get_vf_config 4405 * @netdev: network interface device structure 4406 * @vf_id: VF identifier 4407 * @ivi: VF configuration structure 4408 * 4409 * return VF configuration 4410 **/ 4411 int i40e_ndo_get_vf_config(struct net_device *netdev, 4412 int vf_id, struct ifla_vf_info *ivi) 4413 { 4414 struct i40e_netdev_priv *np = netdev_priv(netdev); 4415 struct i40e_vsi *vsi = np->vsi; 4416 struct i40e_pf *pf = vsi->back; 4417 struct i40e_vf *vf; 4418 int ret = 0; 4419 4420 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4421 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4422 return -EAGAIN; 4423 } 4424 4425 /* validate the request */ 4426 ret = i40e_validate_vf(pf, vf_id); 4427 if (ret) 4428 goto error_param; 4429 4430 vf = &pf->vf[vf_id]; 4431 /* first vsi is always the LAN vsi */ 4432 vsi = pf->vsi[vf->lan_vsi_idx]; 4433 if (!vsi) { 4434 ret = -ENOENT; 4435 goto error_param; 4436 } 4437 4438 ivi->vf = vf_id; 4439 4440 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr); 4441 4442 ivi->max_tx_rate = vf->tx_rate; 4443 ivi->min_tx_rate = 0; 4444 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK; 4445 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >> 4446 I40E_VLAN_PRIORITY_SHIFT; 4447 if (vf->link_forced == false) 4448 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO; 4449 else if (vf->link_up == true) 4450 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE; 4451 else 4452 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE; 4453 ivi->spoofchk = vf->spoofchk; 4454 ivi->trusted = vf->trusted; 4455 ret = 0; 4456 4457 error_param: 4458 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4459 return ret; 4460 } 4461 4462 /** 4463 * i40e_ndo_set_vf_link_state 4464 * @netdev: network interface device structure 4465 * @vf_id: VF identifier 4466 * @link: required link state 4467 * 4468 * Set the link state of a specified VF, regardless of physical link state 4469 **/ 4470 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link) 4471 { 4472 struct i40e_netdev_priv *np = netdev_priv(netdev); 4473 struct i40e_pf *pf = np->vsi->back; 4474 struct i40e_link_status *ls = &pf->hw.phy.link_info; 4475 struct virtchnl_pf_event pfe; 4476 struct i40e_hw *hw = &pf->hw; 4477 struct i40e_vf *vf; 4478 int abs_vf_id; 4479 int ret = 0; 4480 4481 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4482 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4483 return -EAGAIN; 4484 } 4485 4486 /* validate the request */ 4487 if (vf_id >= pf->num_alloc_vfs) { 4488 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); 4489 ret = -EINVAL; 4490 goto error_out; 4491 } 4492 4493 vf = &pf->vf[vf_id]; 4494 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id; 4495 4496 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE; 4497 pfe.severity = PF_EVENT_SEVERITY_INFO; 4498 4499 switch (link) { 4500 case IFLA_VF_LINK_STATE_AUTO: 4501 vf->link_forced = false; 4502 i40e_set_vf_link_state(vf, &pfe, ls); 4503 break; 4504 case IFLA_VF_LINK_STATE_ENABLE: 4505 vf->link_forced = true; 4506 vf->link_up = true; 4507 i40e_set_vf_link_state(vf, &pfe, ls); 4508 break; 4509 case IFLA_VF_LINK_STATE_DISABLE: 4510 vf->link_forced = true; 4511 vf->link_up = false; 4512 i40e_set_vf_link_state(vf, &pfe, ls); 4513 break; 4514 default: 4515 ret = -EINVAL; 4516 goto error_out; 4517 } 4518 /* Notify the VF of its new link state */ 4519 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT, 4520 0, (u8 *)&pfe, sizeof(pfe), NULL); 4521 4522 error_out: 4523 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4524 return ret; 4525 } 4526 4527 /** 4528 * i40e_ndo_set_vf_spoofchk 4529 * @netdev: network interface device structure 4530 * @vf_id: VF identifier 4531 * @enable: flag to enable or disable feature 4532 * 4533 * Enable or disable VF spoof checking 4534 **/ 4535 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable) 4536 { 4537 struct i40e_netdev_priv *np = netdev_priv(netdev); 4538 struct i40e_vsi *vsi = np->vsi; 4539 struct i40e_pf *pf = vsi->back; 4540 struct i40e_vsi_context ctxt; 4541 struct i40e_hw *hw = &pf->hw; 4542 struct i40e_vf *vf; 4543 int ret = 0; 4544 4545 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4546 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4547 return -EAGAIN; 4548 } 4549 4550 /* validate the request */ 4551 if (vf_id >= pf->num_alloc_vfs) { 4552 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); 4553 ret = -EINVAL; 4554 goto out; 4555 } 4556 4557 vf = &(pf->vf[vf_id]); 4558 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) { 4559 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n", 4560 vf_id); 4561 ret = -EAGAIN; 4562 goto out; 4563 } 4564 4565 if (enable == vf->spoofchk) 4566 goto out; 4567 4568 vf->spoofchk = enable; 4569 memset(&ctxt, 0, sizeof(ctxt)); 4570 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid; 4571 ctxt.pf_num = pf->hw.pf_id; 4572 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID); 4573 if (enable) 4574 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK | 4575 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK); 4576 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL); 4577 if (ret) { 4578 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n", 4579 ret); 4580 ret = -EIO; 4581 } 4582 out: 4583 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4584 return ret; 4585 } 4586 4587 /** 4588 * i40e_ndo_set_vf_trust 4589 * @netdev: network interface device structure of the pf 4590 * @vf_id: VF identifier 4591 * @setting: trust setting 4592 * 4593 * Enable or disable VF trust setting 4594 **/ 4595 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting) 4596 { 4597 struct i40e_netdev_priv *np = netdev_priv(netdev); 4598 struct i40e_pf *pf = np->vsi->back; 4599 struct i40e_vf *vf; 4600 int ret = 0; 4601 4602 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) { 4603 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n"); 4604 return -EAGAIN; 4605 } 4606 4607 /* validate the request */ 4608 if (vf_id >= pf->num_alloc_vfs) { 4609 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); 4610 ret = -EINVAL; 4611 goto out; 4612 } 4613 4614 if (pf->flags & I40E_FLAG_MFP_ENABLED) { 4615 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n"); 4616 ret = -EINVAL; 4617 goto out; 4618 } 4619 4620 vf = &pf->vf[vf_id]; 4621 4622 if (setting == vf->trusted) 4623 goto out; 4624 4625 vf->trusted = setting; 4626 i40e_vc_reset_vf(vf, true); 4627 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n", 4628 vf_id, setting ? "" : "un"); 4629 4630 if (vf->adq_enabled) { 4631 if (!vf->trusted) { 4632 dev_info(&pf->pdev->dev, 4633 "VF %u no longer Trusted, deleting all cloud filters\n", 4634 vf_id); 4635 i40e_del_all_cloud_filters(vf); 4636 } 4637 } 4638 4639 out: 4640 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state); 4641 return ret; 4642 } 4643 4644 /** 4645 * i40e_get_vf_stats - populate some stats for the VF 4646 * @netdev: the netdev of the PF 4647 * @vf_id: the host OS identifier (0-127) 4648 * @vf_stats: pointer to the OS memory to be initialized 4649 */ 4650 int i40e_get_vf_stats(struct net_device *netdev, int vf_id, 4651 struct ifla_vf_stats *vf_stats) 4652 { 4653 struct i40e_netdev_priv *np = netdev_priv(netdev); 4654 struct i40e_pf *pf = np->vsi->back; 4655 struct i40e_eth_stats *stats; 4656 struct i40e_vsi *vsi; 4657 struct i40e_vf *vf; 4658 4659 /* validate the request */ 4660 if (i40e_validate_vf(pf, vf_id)) 4661 return -EINVAL; 4662 4663 vf = &pf->vf[vf_id]; 4664 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) { 4665 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id); 4666 return -EBUSY; 4667 } 4668 4669 vsi = pf->vsi[vf->lan_vsi_idx]; 4670 if (!vsi) 4671 return -EINVAL; 4672 4673 i40e_update_eth_stats(vsi); 4674 stats = &vsi->eth_stats; 4675 4676 memset(vf_stats, 0, sizeof(*vf_stats)); 4677 4678 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast + 4679 stats->rx_multicast; 4680 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast + 4681 stats->tx_multicast; 4682 vf_stats->rx_bytes = stats->rx_bytes; 4683 vf_stats->tx_bytes = stats->tx_bytes; 4684 vf_stats->broadcast = stats->rx_broadcast; 4685 vf_stats->multicast = stats->rx_multicast; 4686 vf_stats->rx_dropped = stats->rx_discards; 4687 vf_stats->tx_dropped = stats->tx_discards; 4688 4689 return 0; 4690 } 4691