intel/i40e/i40e_virtchnl_pf.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /* Copyright(c) 2013 - 2018 Intel Corporation. */
0003
0004 #include "i40e.h"
0005
0006 /*********************notification routines***********************/
0007
0008 /**
0009  * i40e_vc_vf_broadcast
0010  * @pf: pointer to the PF structure
0011  * @v_opcode: operation code
0012  * @v_retval: return value
0013  * @msg: pointer to the msg buffer
0014  * @msglen: msg length
0015  *
0016  * send a message to all VFs on a given PF
0017  **/
0018 static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
0019                  enum virtchnl_ops v_opcode,
0020                  i40e_status v_retval, u8 *msg,
0021                  u16 msglen)
0022 {
0023     struct i40e_hw *hw = &pf->hw;
0024     struct i40e_vf *vf = pf->vf;
0025     int i;
0026
0027     for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
0028         int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
0029         /* Not all vfs are enabled so skip the ones that are not */
0030         if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
0031             !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
0032             continue;
0033
0034         /* Ignore return value on purpose - a given VF may fail, but
0035          * we need to keep going and send to all of them
0036          */
0037         i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
0038                        msg, msglen, NULL);
0039     }
0040 }
0041
0042 /**
0043  * i40e_vc_link_speed2mbps
0044  * converts i40e_aq_link_speed to integer value of Mbps
0045  * @link_speed: the speed to convert
0046  *
0047  * return the speed as direct value of Mbps.
0048  **/
0049 static u32
0050 i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)
0051 {
0052     switch (link_speed) {
0053     case I40E_LINK_SPEED_100MB:
0054         return SPEED_100;
0055     case I40E_LINK_SPEED_1GB:
0056         return SPEED_1000;
0057     case I40E_LINK_SPEED_2_5GB:
0058         return SPEED_2500;
0059     case I40E_LINK_SPEED_5GB:
0060         return SPEED_5000;
0061     case I40E_LINK_SPEED_10GB:
0062         return SPEED_10000;
0063     case I40E_LINK_SPEED_20GB:
0064         return SPEED_20000;
0065     case I40E_LINK_SPEED_25GB:
0066         return SPEED_25000;
0067     case I40E_LINK_SPEED_40GB:
0068         return SPEED_40000;
0069     case I40E_LINK_SPEED_UNKNOWN:
0070         return SPEED_UNKNOWN;
0071     }
0072     return SPEED_UNKNOWN;
0073 }
0074
0075 /**
0076  * i40e_set_vf_link_state
0077  * @vf: pointer to the VF structure
0078  * @pfe: pointer to PF event structure
0079  * @ls: pointer to link status structure
0080  *
0081  * set a link state on a single vf
0082  **/
0083 static void i40e_set_vf_link_state(struct i40e_vf *vf,
0084                    struct virtchnl_pf_event *pfe, struct i40e_link_status *ls)
0085 {
0086     u8 link_status = ls->link_info & I40E_AQ_LINK_UP;
0087
0088     if (vf->link_forced)
0089         link_status = vf->link_up;
0090
0091     if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
0092         pfe->event_data.link_event_adv.link_speed = link_status ?
0093             i40e_vc_link_speed2mbps(ls->link_speed) : 0;
0094         pfe->event_data.link_event_adv.link_status = link_status;
0095     } else {
0096         pfe->event_data.link_event.link_speed = link_status ?
0097             i40e_virtchnl_link_speed(ls->link_speed) : 0;
0098         pfe->event_data.link_event.link_status = link_status;
0099     }
0100 }
0101
0102 /**
0103  * i40e_vc_notify_vf_link_state
0104  * @vf: pointer to the VF structure
0105  *
0106  * send a link status message to a single VF
0107  **/
0108 static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
0109 {
0110     struct virtchnl_pf_event pfe;
0111     struct i40e_pf *pf = vf->pf;
0112     struct i40e_hw *hw = &pf->hw;
0113     struct i40e_link_status *ls = &pf->hw.phy.link_info;
0114     int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
0115
0116     pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
0117     pfe.severity = PF_EVENT_SEVERITY_INFO;
0118
0119     i40e_set_vf_link_state(vf, &pfe, ls);
0120
0121     i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
0122                    0, (u8 *)&pfe, sizeof(pfe), NULL);
0123 }
0124
0125 /**
0126  * i40e_vc_notify_link_state
0127  * @pf: pointer to the PF structure
0128  *
0129  * send a link status message to all VFs on a given PF
0130  **/
0131 void i40e_vc_notify_link_state(struct i40e_pf *pf)
0132 {
0133     int i;
0134
0135     for (i = 0; i < pf->num_alloc_vfs; i++)
0136         i40e_vc_notify_vf_link_state(&pf->vf[i]);
0137 }
0138
0139 /**
0140  * i40e_vc_notify_reset
0141  * @pf: pointer to the PF structure
0142  *
0143  * indicate a pending reset to all VFs on a given PF
0144  **/
0145 void i40e_vc_notify_reset(struct i40e_pf *pf)
0146 {
0147     struct virtchnl_pf_event pfe;
0148
0149     pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
0150     pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
0151     i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
0152                  (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
0153 }
0154
0155 /**
0156  * i40e_vc_notify_vf_reset
0157  * @vf: pointer to the VF structure
0158  *
0159  * indicate a pending reset to the given VF
0160  **/
0161 void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
0162 {
0163     struct virtchnl_pf_event pfe;
0164     int abs_vf_id;
0165
0166     /* validate the request */
0167     if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
0168         return;
0169
0170     /* verify if the VF is in either init or active before proceeding */
0171     if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
0172         !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
0173         return;
0174
0175     abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
0176
0177     pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
0178     pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
0179     i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
0180                    0, (u8 *)&pfe,
0181                    sizeof(struct virtchnl_pf_event), NULL);
0182 }
0183 /***********************misc routines*****************************/
0184
0185 /**
0186  * i40e_vc_reset_vf
0187  * @vf: pointer to the VF info
0188  * @notify_vf: notify vf about reset or not
0189  * Reset VF handler.
0190  **/
0191 static void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf)
0192 {
0193     struct i40e_pf *pf = vf->pf;
0194     int i;
0195
0196     if (notify_vf)
0197         i40e_vc_notify_vf_reset(vf);
0198
0199     /* We want to ensure that an actual reset occurs initiated after this
0200      * function was called. However, we do not want to wait forever, so
0201      * we'll give a reasonable time and print a message if we failed to
0202      * ensure a reset.
0203      */
0204     for (i = 0; i < 20; i++) {
0205         /* If PF is in VFs releasing state reset VF is impossible,
0206          * so leave it.
0207          */
0208         if (test_bit(__I40E_VFS_RELEASING, pf->state))
0209             return;
0210         if (i40e_reset_vf(vf, false))
0211             return;
0212         usleep_range(10000, 20000);
0213     }
0214
0215     if (notify_vf)
0216         dev_warn(&vf->pf->pdev->dev,
0217              "Failed to initiate reset for VF %d after 200 milliseconds\n",
0218              vf->vf_id);
0219     else
0220         dev_dbg(&vf->pf->pdev->dev,
0221             "Failed to initiate reset for VF %d after 200 milliseconds\n",
0222             vf->vf_id);
0223 }
0224
0225 /**
0226  * i40e_vc_isvalid_vsi_id
0227  * @vf: pointer to the VF info
0228  * @vsi_id: VF relative VSI id
0229  *
0230  * check for the valid VSI id
0231  **/
0232 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
0233 {
0234     struct i40e_pf *pf = vf->pf;
0235     struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
0236
0237     return (vsi && (vsi->vf_id == vf->vf_id));
0238 }
0239
0240 /**
0241  * i40e_vc_isvalid_queue_id
0242  * @vf: pointer to the VF info
0243  * @vsi_id: vsi id
0244  * @qid: vsi relative queue id
0245  *
0246  * check for the valid queue id
0247  **/
0248 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
0249                         u16 qid)
0250 {
0251     struct i40e_pf *pf = vf->pf;
0252     struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
0253
0254     return (vsi && (qid < vsi->alloc_queue_pairs));
0255 }
0256
0257 /**
0258  * i40e_vc_isvalid_vector_id
0259  * @vf: pointer to the VF info
0260  * @vector_id: VF relative vector id
0261  *
0262  * check for the valid vector id
0263  **/
0264 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id)
0265 {
0266     struct i40e_pf *pf = vf->pf;
0267
0268     return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
0269 }
0270
0271 /***********************vf resource mgmt routines*****************/
0272
0273 /**
0274  * i40e_vc_get_pf_queue_id
0275  * @vf: pointer to the VF info
0276  * @vsi_id: id of VSI as provided by the FW
0277  * @vsi_queue_id: vsi relative queue id
0278  *
0279  * return PF relative queue id
0280  **/
0281 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
0282                    u8 vsi_queue_id)
0283 {
0284     struct i40e_pf *pf = vf->pf;
0285     struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
0286     u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
0287
0288     if (!vsi)
0289         return pf_queue_id;
0290
0291     if (le16_to_cpu(vsi->info.mapping_flags) &
0292         I40E_AQ_VSI_QUE_MAP_NONCONTIG)
0293         pf_queue_id =
0294             le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
0295     else
0296         pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
0297                   vsi_queue_id;
0298
0299     return pf_queue_id;
0300 }
0301
0302 /**
0303  * i40e_get_real_pf_qid
0304  * @vf: pointer to the VF info
0305  * @vsi_id: vsi id
0306  * @queue_id: queue number
0307  *
0308  * wrapper function to get pf_queue_id handling ADq code as well
0309  **/
0310 static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
0311 {
0312     int i;
0313
0314     if (vf->adq_enabled) {
0315         /* Although VF considers all the queues(can be 1 to 16) as its
0316          * own but they may actually belong to different VSIs(up to 4).
0317          * We need to find which queues belongs to which VSI.
0318          */
0319         for (i = 0; i < vf->num_tc; i++) {
0320             if (queue_id < vf->ch[i].num_qps) {
0321                 vsi_id = vf->ch[i].vsi_id;
0322                 break;
0323             }
0324             /* find right queue id which is relative to a
0325              * given VSI.
0326              */
0327             queue_id -= vf->ch[i].num_qps;
0328             }
0329         }
0330
0331     return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id);
0332 }
0333
0334 /**
0335  * i40e_config_irq_link_list
0336  * @vf: pointer to the VF info
0337  * @vsi_id: id of VSI as given by the FW
0338  * @vecmap: irq map info
0339  *
0340  * configure irq link list from the map
0341  **/
0342 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
0343                       struct virtchnl_vector_map *vecmap)
0344 {
0345     unsigned long linklistmap = 0, tempmap;
0346     struct i40e_pf *pf = vf->pf;
0347     struct i40e_hw *hw = &pf->hw;
0348     u16 vsi_queue_id, pf_queue_id;
0349     enum i40e_queue_type qtype;
0350     u16 next_q, vector_id, size;
0351     u32 reg, reg_idx;
0352     u16 itr_idx = 0;
0353
0354     vector_id = vecmap->vector_id;
0355     /* setup the head */
0356     if (0 == vector_id)
0357         reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
0358     else
0359         reg_idx = I40E_VPINT_LNKLSTN(
0360              ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
0361              (vector_id - 1));
0362
0363     if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
0364         /* Special case - No queues mapped on this vector */
0365         wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
0366         goto irq_list_done;
0367     }
0368     tempmap = vecmap->rxq_map;
0369     for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
0370         linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
0371                     vsi_queue_id));
0372     }
0373
0374     tempmap = vecmap->txq_map;
0375     for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
0376         linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
0377                      vsi_queue_id + 1));
0378     }
0379
0380     size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
0381     next_q = find_first_bit(&linklistmap, size);
0382     if (unlikely(next_q == size))
0383         goto irq_list_done;
0384
0385     vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
0386     qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
0387     pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id);
0388     reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
0389
0390     wr32(hw, reg_idx, reg);
0391
0392     while (next_q < size) {
0393         switch (qtype) {
0394         case I40E_QUEUE_TYPE_RX:
0395             reg_idx = I40E_QINT_RQCTL(pf_queue_id);
0396             itr_idx = vecmap->rxitr_idx;
0397             break;
0398         case I40E_QUEUE_TYPE_TX:
0399             reg_idx = I40E_QINT_TQCTL(pf_queue_id);
0400             itr_idx = vecmap->txitr_idx;
0401             break;
0402         default:
0403             break;
0404         }
0405
0406         next_q = find_next_bit(&linklistmap, size, next_q + 1);
0407         if (next_q < size) {
0408             vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
0409             qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
0410             pf_queue_id = i40e_get_real_pf_qid(vf,
0411                                vsi_id,
0412                                vsi_queue_id);
0413         } else {
0414             pf_queue_id = I40E_QUEUE_END_OF_LIST;
0415             qtype = 0;
0416         }
0417
0418         /* format for the RQCTL & TQCTL regs is same */
0419         reg = (vector_id) |
0420             (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
0421             (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
0422             BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
0423             (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
0424         wr32(hw, reg_idx, reg);
0425     }
0426
0427     /* if the vf is running in polling mode and using interrupt zero,
0428      * need to disable auto-mask on enabling zero interrupt for VFs.
0429      */
0430     if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
0431         (vector_id == 0)) {
0432         reg = rd32(hw, I40E_GLINT_CTL);
0433         if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
0434             reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
0435             wr32(hw, I40E_GLINT_CTL, reg);
0436         }
0437     }
0438
0439 irq_list_done:
0440     i40e_flush(hw);
0441 }
0442
0443 /**
0444  * i40e_release_iwarp_qvlist
0445  * @vf: pointer to the VF.
0446  *
0447  **/
0448 static void i40e_release_iwarp_qvlist(struct i40e_vf *vf)
0449 {
0450     struct i40e_pf *pf = vf->pf;
0451     struct virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info;
0452     u32 msix_vf;
0453     u32 i;
0454
0455     if (!vf->qvlist_info)
0456         return;
0457
0458     msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
0459     for (i = 0; i < qvlist_info->num_vectors; i++) {
0460         struct virtchnl_iwarp_qv_info *qv_info;
0461         u32 next_q_index, next_q_type;
0462         struct i40e_hw *hw = &pf->hw;
0463         u32 v_idx, reg_idx, reg;
0464
0465         qv_info = &qvlist_info->qv_info[i];
0466         if (!qv_info)
0467             continue;
0468         v_idx = qv_info->v_idx;
0469         if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
0470             /* Figure out the queue after CEQ and make that the
0471              * first queue.
0472              */
0473             reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
0474             reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
0475             next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
0476                     >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
0477             next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
0478                     >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
0479
0480             reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
0481             reg = (next_q_index &
0482                    I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
0483                    (next_q_type <<
0484                    I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
0485
0486             wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
0487         }
0488     }
0489     kfree(vf->qvlist_info);
0490     vf->qvlist_info = NULL;
0491 }
0492
0493 /**
0494  * i40e_config_iwarp_qvlist
0495  * @vf: pointer to the VF info
0496  * @qvlist_info: queue and vector list
0497  *
0498  * Return 0 on success or < 0 on error
0499  **/
0500 static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
0501                     struct virtchnl_iwarp_qvlist_info *qvlist_info)
0502 {
0503     struct i40e_pf *pf = vf->pf;
0504     struct i40e_hw *hw = &pf->hw;
0505     struct virtchnl_iwarp_qv_info *qv_info;
0506     u32 v_idx, i, reg_idx, reg;
0507     u32 next_q_idx, next_q_type;
0508     u32 msix_vf;
0509     int ret = 0;
0510
0511     msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
0512
0513     if (qvlist_info->num_vectors > msix_vf) {
0514         dev_warn(&pf->pdev->dev,
0515              "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
0516              qvlist_info->num_vectors,
0517              msix_vf);
0518         ret = -EINVAL;
0519         goto err_out;
0520     }
0521
0522     kfree(vf->qvlist_info);
0523     vf->qvlist_info = kzalloc(struct_size(vf->qvlist_info, qv_info,
0524                           qvlist_info->num_vectors - 1),
0525                   GFP_KERNEL);
0526     if (!vf->qvlist_info) {
0527         ret = -ENOMEM;
0528         goto err_out;
0529     }
0530     vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
0531
0532     msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
0533     for (i = 0; i < qvlist_info->num_vectors; i++) {
0534         qv_info = &qvlist_info->qv_info[i];
0535         if (!qv_info)
0536             continue;
0537
0538         /* Validate vector id belongs to this vf */
0539         if (!i40e_vc_isvalid_vector_id(vf, qv_info->v_idx)) {
0540             ret = -EINVAL;
0541             goto err_free;
0542         }
0543
0544         v_idx = qv_info->v_idx;
0545
0546         vf->qvlist_info->qv_info[i] = *qv_info;
0547
0548         reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
0549         /* We might be sharing the interrupt, so get the first queue
0550          * index and type, push it down the list by adding the new
0551          * queue on top. Also link it with the new queue in CEQCTL.
0552          */
0553         reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
0554         next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
0555                 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
0556         next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
0557                 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
0558
0559         if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
0560             reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
0561             reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
0562             (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
0563             (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
0564             (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
0565             (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
0566             wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
0567
0568             reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
0569             reg = (qv_info->ceq_idx &
0570                    I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
0571                    (I40E_QUEUE_TYPE_PE_CEQ <<
0572                    I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
0573             wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
0574         }
0575
0576         if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
0577             reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
0578             (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
0579             (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
0580
0581             wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
0582         }
0583     }
0584
0585     return 0;
0586 err_free:
0587     kfree(vf->qvlist_info);
0588     vf->qvlist_info = NULL;
0589 err_out:
0590     return ret;
0591 }
0592
0593 /**
0594  * i40e_config_vsi_tx_queue
0595  * @vf: pointer to the VF info
0596  * @vsi_id: id of VSI as provided by the FW
0597  * @vsi_queue_id: vsi relative queue index
0598  * @info: config. info
0599  *
0600  * configure tx queue
0601  **/
0602 static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
0603                     u16 vsi_queue_id,
0604                     struct virtchnl_txq_info *info)
0605 {
0606     struct i40e_pf *pf = vf->pf;
0607     struct i40e_hw *hw = &pf->hw;
0608     struct i40e_hmc_obj_txq tx_ctx;
0609     struct i40e_vsi *vsi;
0610     u16 pf_queue_id;
0611     u32 qtx_ctl;
0612     int ret = 0;
0613
0614     if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
0615         ret = -ENOENT;
0616         goto error_context;
0617     }
0618     pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
0619     vsi = i40e_find_vsi_from_id(pf, vsi_id);
0620     if (!vsi) {
0621         ret = -ENOENT;
0622         goto error_context;
0623     }
0624
0625     /* clear the context structure first */
0626     memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
0627
0628     /* only set the required fields */
0629     tx_ctx.base = info->dma_ring_addr / 128;
0630     tx_ctx.qlen = info->ring_len;
0631     tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
0632     tx_ctx.rdylist_act = 0;
0633     tx_ctx.head_wb_ena = info->headwb_enabled;
0634     tx_ctx.head_wb_addr = info->dma_headwb_addr;
0635
0636     /* clear the context in the HMC */
0637     ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
0638     if (ret) {
0639         dev_err(&pf->pdev->dev,
0640             "Failed to clear VF LAN Tx queue context %d, error: %d\n",
0641             pf_queue_id, ret);
0642         ret = -ENOENT;
0643         goto error_context;
0644     }
0645
0646     /* set the context in the HMC */
0647     ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
0648     if (ret) {
0649         dev_err(&pf->pdev->dev,
0650             "Failed to set VF LAN Tx queue context %d error: %d\n",
0651             pf_queue_id, ret);
0652         ret = -ENOENT;
0653         goto error_context;
0654     }
0655
0656     /* associate this queue with the PCI VF function */
0657     qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
0658     qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
0659             & I40E_QTX_CTL_PF_INDX_MASK);
0660     qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
0661              << I40E_QTX_CTL_VFVM_INDX_SHIFT)
0662             & I40E_QTX_CTL_VFVM_INDX_MASK);
0663     wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
0664     i40e_flush(hw);
0665
0666 error_context:
0667     return ret;
0668 }
0669
0670 /**
0671  * i40e_config_vsi_rx_queue
0672  * @vf: pointer to the VF info
0673  * @vsi_id: id of VSI  as provided by the FW
0674  * @vsi_queue_id: vsi relative queue index
0675  * @info: config. info
0676  *
0677  * configure rx queue
0678  **/
0679 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
0680                     u16 vsi_queue_id,
0681                     struct virtchnl_rxq_info *info)
0682 {
0683     u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
0684     struct i40e_pf *pf = vf->pf;
0685     struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
0686     struct i40e_hw *hw = &pf->hw;
0687     struct i40e_hmc_obj_rxq rx_ctx;
0688     int ret = 0;
0689
0690     /* clear the context structure first */
0691     memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
0692
0693     /* only set the required fields */
0694     rx_ctx.base = info->dma_ring_addr / 128;
0695     rx_ctx.qlen = info->ring_len;
0696
0697     if (info->splithdr_enabled) {
0698         rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
0699                   I40E_RX_SPLIT_IP      |
0700                   I40E_RX_SPLIT_TCP_UDP |
0701                   I40E_RX_SPLIT_SCTP;
0702         /* header length validation */
0703         if (info->hdr_size > ((2 * 1024) - 64)) {
0704             ret = -EINVAL;
0705             goto error_param;
0706         }
0707         rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
0708
0709         /* set split mode 10b */
0710         rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
0711     }
0712
0713     /* databuffer length validation */
0714     if (info->databuffer_size > ((16 * 1024) - 128)) {
0715         ret = -EINVAL;
0716         goto error_param;
0717     }
0718     rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
0719
0720     /* max pkt. length validation */
0721     if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
0722         ret = -EINVAL;
0723         goto error_param;
0724     }
0725     rx_ctx.rxmax = info->max_pkt_size;
0726
0727     /* if port VLAN is configured increase the max packet size */
0728     if (vsi->info.pvid)
0729         rx_ctx.rxmax += VLAN_HLEN;
0730
0731     /* enable 32bytes desc always */
0732     rx_ctx.dsize = 1;
0733
0734     /* default values */
0735     rx_ctx.lrxqthresh = 1;
0736     rx_ctx.crcstrip = 1;
0737     rx_ctx.prefena = 1;
0738     rx_ctx.l2tsel = 1;
0739
0740     /* clear the context in the HMC */
0741     ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
0742     if (ret) {
0743         dev_err(&pf->pdev->dev,
0744             "Failed to clear VF LAN Rx queue context %d, error: %d\n",
0745             pf_queue_id, ret);
0746         ret = -ENOENT;
0747         goto error_param;
0748     }
0749
0750     /* set the context in the HMC */
0751     ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
0752     if (ret) {
0753         dev_err(&pf->pdev->dev,
0754             "Failed to set VF LAN Rx queue context %d error: %d\n",
0755             pf_queue_id, ret);
0756         ret = -ENOENT;
0757         goto error_param;
0758     }
0759
0760 error_param:
0761     return ret;
0762 }
0763
0764 /**
0765  * i40e_alloc_vsi_res
0766  * @vf: pointer to the VF info
0767  * @idx: VSI index, applies only for ADq mode, zero otherwise
0768  *
0769  * alloc VF vsi context & resources
0770  **/
0771 static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
0772 {
0773     struct i40e_mac_filter *f = NULL;
0774     struct i40e_pf *pf = vf->pf;
0775     struct i40e_vsi *vsi;
0776     u64 max_tx_rate = 0;
0777     int ret = 0;
0778
0779     vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, pf->vsi[pf->lan_vsi]->seid,
0780                  vf->vf_id);
0781
0782     if (!vsi) {
0783         dev_err(&pf->pdev->dev,
0784             "add vsi failed for VF %d, aq_err %d\n",
0785             vf->vf_id, pf->hw.aq.asq_last_status);
0786         ret = -ENOENT;
0787         goto error_alloc_vsi_res;
0788     }
0789
0790     if (!idx) {
0791         u64 hena = i40e_pf_get_default_rss_hena(pf);
0792         u8 broadcast[ETH_ALEN];
0793
0794         vf->lan_vsi_idx = vsi->idx;
0795         vf->lan_vsi_id = vsi->id;
0796         /* If the port VLAN has been configured and then the
0797          * VF driver was removed then the VSI port VLAN
0798          * configuration was destroyed.  Check if there is
0799          * a port VLAN and restore the VSI configuration if
0800          * needed.
0801          */
0802         if (vf->port_vlan_id)
0803             i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
0804
0805         spin_lock_bh(&vsi->mac_filter_hash_lock);
0806         if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
0807             f = i40e_add_mac_filter(vsi,
0808                         vf->default_lan_addr.addr);
0809             if (!f)
0810                 dev_info(&pf->pdev->dev,
0811                      "Could not add MAC filter %pM for VF %d\n",
0812                     vf->default_lan_addr.addr, vf->vf_id);
0813         }
0814         eth_broadcast_addr(broadcast);
0815         f = i40e_add_mac_filter(vsi, broadcast);
0816         if (!f)
0817             dev_info(&pf->pdev->dev,
0818                  "Could not allocate VF broadcast filter\n");
0819         spin_unlock_bh(&vsi->mac_filter_hash_lock);
0820         wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
0821         wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
0822         /* program mac filter only for VF VSI */
0823         ret = i40e_sync_vsi_filters(vsi);
0824         if (ret)
0825             dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
0826     }
0827
0828     /* storing VSI index and id for ADq and don't apply the mac filter */
0829     if (vf->adq_enabled) {
0830         vf->ch[idx].vsi_idx = vsi->idx;
0831         vf->ch[idx].vsi_id = vsi->id;
0832     }
0833
0834     /* Set VF bandwidth if specified */
0835     if (vf->tx_rate) {
0836         max_tx_rate = vf->tx_rate;
0837     } else if (vf->ch[idx].max_tx_rate) {
0838         max_tx_rate = vf->ch[idx].max_tx_rate;
0839     }
0840
0841     if (max_tx_rate) {
0842         max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
0843         ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
0844                           max_tx_rate, 0, NULL);
0845         if (ret)
0846             dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
0847                 vf->vf_id, ret);
0848     }
0849
0850 error_alloc_vsi_res:
0851     return ret;
0852 }
0853
0854 /**
0855  * i40e_map_pf_queues_to_vsi
0856  * @vf: pointer to the VF info
0857  *
0858  * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
0859  * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
0860  **/
0861 static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
0862 {
0863     struct i40e_pf *pf = vf->pf;
0864     struct i40e_hw *hw = &pf->hw;
0865     u32 reg, num_tc = 1; /* VF has at least one traffic class */
0866     u16 vsi_id, qps;
0867     int i, j;
0868
0869     if (vf->adq_enabled)
0870         num_tc = vf->num_tc;
0871
0872     for (i = 0; i < num_tc; i++) {
0873         if (vf->adq_enabled) {
0874             qps = vf->ch[i].num_qps;
0875             vsi_id =  vf->ch[i].vsi_id;
0876         } else {
0877             qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
0878             vsi_id = vf->lan_vsi_id;
0879         }
0880
0881         for (j = 0; j < 7; j++) {
0882             if (j * 2 >= qps) {
0883                 /* end of list */
0884                 reg = 0x07FF07FF;
0885             } else {
0886                 u16 qid = i40e_vc_get_pf_queue_id(vf,
0887                                   vsi_id,
0888                                   j * 2);
0889                 reg = qid;
0890                 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
0891                                   (j * 2) + 1);
0892                 reg |= qid << 16;
0893             }
0894             i40e_write_rx_ctl(hw,
0895                       I40E_VSILAN_QTABLE(j, vsi_id),
0896                       reg);
0897         }
0898     }
0899 }
0900
0901 /**
0902  * i40e_map_pf_to_vf_queues
0903  * @vf: pointer to the VF info
0904  *
0905  * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
0906  * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
0907  **/
0908 static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
0909 {
0910     struct i40e_pf *pf = vf->pf;
0911     struct i40e_hw *hw = &pf->hw;
0912     u32 reg, total_qps = 0;
0913     u32 qps, num_tc = 1; /* VF has at least one traffic class */
0914     u16 vsi_id, qid;
0915     int i, j;
0916
0917     if (vf->adq_enabled)
0918         num_tc = vf->num_tc;
0919
0920     for (i = 0; i < num_tc; i++) {
0921         if (vf->adq_enabled) {
0922             qps = vf->ch[i].num_qps;
0923             vsi_id =  vf->ch[i].vsi_id;
0924         } else {
0925             qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
0926             vsi_id = vf->lan_vsi_id;
0927         }
0928
0929         for (j = 0; j < qps; j++) {
0930             qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
0931
0932             reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
0933             wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
0934                  reg);
0935             total_qps++;
0936         }
0937     }
0938 }
0939
0940 /**
0941  * i40e_enable_vf_mappings
0942  * @vf: pointer to the VF info
0943  *
0944  * enable VF mappings
0945  **/
0946 static void i40e_enable_vf_mappings(struct i40e_vf *vf)
0947 {
0948     struct i40e_pf *pf = vf->pf;
0949     struct i40e_hw *hw = &pf->hw;
0950     u32 reg;
0951
0952     /* Tell the hardware we're using noncontiguous mapping. HW requires
0953      * that VF queues be mapped using this method, even when they are
0954      * contiguous in real life
0955      */
0956     i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
0957               I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
0958
0959     /* enable VF vplan_qtable mappings */
0960     reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
0961     wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
0962
0963     i40e_map_pf_to_vf_queues(vf);
0964     i40e_map_pf_queues_to_vsi(vf);
0965
0966     i40e_flush(hw);
0967 }
0968
0969 /**
0970  * i40e_disable_vf_mappings
0971  * @vf: pointer to the VF info
0972  *
0973  * disable VF mappings
0974  **/
0975 static void i40e_disable_vf_mappings(struct i40e_vf *vf)
0976 {
0977     struct i40e_pf *pf = vf->pf;
0978     struct i40e_hw *hw = &pf->hw;
0979     int i;
0980
0981     /* disable qp mappings */
0982     wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
0983     for (i = 0; i < I40E_MAX_VSI_QP; i++)
0984         wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
0985              I40E_QUEUE_END_OF_LIST);
0986     i40e_flush(hw);
0987 }
0988
0989 /**
0990  * i40e_free_vf_res
0991  * @vf: pointer to the VF info
0992  *
0993  * free VF resources
0994  **/
0995 static void i40e_free_vf_res(struct i40e_vf *vf)
0996 {
0997     struct i40e_pf *pf = vf->pf;
0998     struct i40e_hw *hw = &pf->hw;
0999     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_sync_vfr_reset
1381  * @hw: pointer to hw struct
1382  * @vf_id: VF identifier
1383  *
1384  * Before trigger hardware reset, we need to know if no other process has
1385  * reserved the hardware for any reset operations. This check is done by
1386  * examining the status of the RSTAT1 register used to signal the reset.
1387  **/
1388 static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
1389 {
1390     u32 reg;
1391     int i;
1392
1393     for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
1394         reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
1395                I40E_VFINT_ICR0_ADMINQ_MASK;
1396         if (reg)
1397             return 0;
1398
1399         usleep_range(100, 200);
1400     }
1401
1402     return -EAGAIN;
1403 }
1404
1405 /**
1406  * i40e_trigger_vf_reset
1407  * @vf: pointer to the VF structure
1408  * @flr: VFLR was issued or not
1409  *
1410  * Trigger hardware to start a reset for a particular VF. Expects the caller
1411  * to wait the proper amount of time to allow hardware to reset the VF before
1412  * it cleans up and restores VF functionality.
1413  **/
1414 static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1415 {
1416     struct i40e_pf *pf = vf->pf;
1417     struct i40e_hw *hw = &pf->hw;
1418     u32 reg, reg_idx, bit_idx;
1419     bool vf_active;
1420     u32 radq;
1421
1422     /* warn the VF */
1423     vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1424
1425     /* Disable VF's configuration API during reset. The flag is re-enabled
1426      * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1427      * It's normally disabled in i40e_free_vf_res(), but it's safer
1428      * to do it earlier to give some time to finish to any VF config
1429      * functions that may still be running at this point.
1430      */
1431     clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1432
1433     /* In the case of a VFLR, the HW has already reset the VF and we
1434      * just need to clean up, so don't hit the VFRTRIG register.
1435      */
1436     if (!flr) {
1437         /* Sync VFR reset before trigger next one */
1438         radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
1439                 I40E_VFINT_ICR0_ADMINQ_MASK;
1440         if (vf_active && !radq)
1441             /* waiting for finish reset by virtual driver */
1442             if (i40e_sync_vfr_reset(hw, vf->vf_id))
1443                 dev_info(&pf->pdev->dev,
1444                      "Reset VF %d never finished\n",
1445                 vf->vf_id);
1446
1447         /* Reset VF using VPGEN_VFRTRIG reg. It is also setting
1448          * in progress state in rstat1 register.
1449          */
1450         reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1451         reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1452         wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1453         i40e_flush(hw);
1454     }
1455     /* clear the VFLR bit in GLGEN_VFLRSTAT */
1456     reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1457     bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1458     wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1459     i40e_flush(hw);
1460
1461     if (i40e_quiesce_vf_pci(vf))
1462         dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1463             vf->vf_id);
1464 }
1465
1466 /**
1467  * i40e_cleanup_reset_vf
1468  * @vf: pointer to the VF structure
1469  *
1470  * Cleanup a VF after the hardware reset is finished. Expects the caller to
1471  * have verified whether the reset is finished properly, and ensure the
1472  * minimum amount of wait time has passed.
1473  **/
1474 static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1475 {
1476     struct i40e_pf *pf = vf->pf;
1477     struct i40e_hw *hw = &pf->hw;
1478     u32 reg;
1479
1480     /* disable promisc modes in case they were enabled */
1481     i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false);
1482
1483     /* free VF resources to begin resetting the VSI state */
1484     i40e_free_vf_res(vf);
1485
1486     /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1487      * By doing this we allow HW to access VF memory at any point. If we
1488      * did it any sooner, HW could access memory while it was being freed
1489      * in i40e_free_vf_res(), causing an IOMMU fault.
1490      *
1491      * On the other hand, this needs to be done ASAP, because the VF driver
1492      * is waiting for this to happen and may report a timeout. It's
1493      * harmless, but it gets logged into Guest OS kernel log, so best avoid
1494      * it.
1495      */
1496     reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1497     reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1498     wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1499
1500     /* reallocate VF resources to finish resetting the VSI state */
1501     if (!i40e_alloc_vf_res(vf)) {
1502         int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1503         i40e_enable_vf_mappings(vf);
1504         set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1505         clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1506         /* Do not notify the client during VF init */
1507         if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1508                     &vf->vf_states))
1509             i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1510         vf->num_vlan = 0;
1511     }
1512
1513     /* Tell the VF driver the reset is done. This needs to be done only
1514      * after VF has been fully initialized, because the VF driver may
1515      * request resources immediately after setting this flag.
1516      */
1517     wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1518 }
1519
1520 /**
1521  * i40e_reset_vf
1522  * @vf: pointer to the VF structure
1523  * @flr: VFLR was issued or not
1524  *
1525  * Returns true if the VF is in reset, resets successfully, or resets
1526  * are disabled and false otherwise.
1527  **/
1528 bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1529 {
1530     struct i40e_pf *pf = vf->pf;
1531     struct i40e_hw *hw = &pf->hw;
1532     bool rsd = false;
1533     u32 reg;
1534     int i;
1535
1536     if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state))
1537         return true;
1538
1539     /* If the VFs have been disabled, this means something else is
1540      * resetting the VF, so we shouldn't continue.
1541      */
1542     if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1543         return true;
1544
1545     i40e_trigger_vf_reset(vf, flr);
1546
1547     /* poll VPGEN_VFRSTAT reg to make sure
1548      * that reset is complete
1549      */
1550     for (i = 0; i < 10; i++) {
1551         /* VF reset requires driver to first reset the VF and then
1552          * poll the status register to make sure that the reset
1553          * completed successfully. Due to internal HW FIFO flushes,
1554          * we must wait 10ms before the register will be valid.
1555          */
1556         usleep_range(10000, 20000);
1557         reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1558         if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1559             rsd = true;
1560             break;
1561         }
1562     }
1563
1564     if (flr)
1565         usleep_range(10000, 20000);
1566
1567     if (!rsd)
1568         dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1569             vf->vf_id);
1570     usleep_range(10000, 20000);
1571
1572     /* On initial reset, we don't have any queues to disable */
1573     if (vf->lan_vsi_idx != 0)
1574         i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1575
1576     i40e_cleanup_reset_vf(vf);
1577
1578     i40e_flush(hw);
1579     clear_bit(__I40E_VF_DISABLE, pf->state);
1580
1581     return true;
1582 }
1583
1584 /**
1585  * i40e_reset_all_vfs
1586  * @pf: pointer to the PF structure
1587  * @flr: VFLR was issued or not
1588  *
1589  * Reset all allocated VFs in one go. First, tell the hardware to reset each
1590  * VF, then do all the waiting in one chunk, and finally finish restoring each
1591  * VF after the wait. This is useful during PF routines which need to reset
1592  * all VFs, as otherwise it must perform these resets in a serialized fashion.
1593  *
1594  * Returns true if any VFs were reset, and false otherwise.
1595  **/
1596 bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1597 {
1598     struct i40e_hw *hw = &pf->hw;
1599     struct i40e_vf *vf;
1600     int i, v;
1601     u32 reg;
1602
1603     /* If we don't have any VFs, then there is nothing to reset */
1604     if (!pf->num_alloc_vfs)
1605         return false;
1606
1607     /* If VFs have been disabled, there is no need to reset */
1608     if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1609         return false;
1610
1611     /* Begin reset on all VFs at once */
1612     for (v = 0; v < pf->num_alloc_vfs; v++)
1613         i40e_trigger_vf_reset(&pf->vf[v], flr);
1614
1615     /* HW requires some time to make sure it can flush the FIFO for a VF
1616      * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1617      * sequence to make sure that it has completed. We'll keep track of
1618      * the VFs using a simple iterator that increments once that VF has
1619      * finished resetting.
1620      */
1621     for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
1622         usleep_range(10000, 20000);
1623
1624         /* Check each VF in sequence, beginning with the VF to fail
1625          * the previous check.
1626          */
1627         while (v < pf->num_alloc_vfs) {
1628             vf = &pf->vf[v];
1629             reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1630             if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1631                 break;
1632
1633             /* If the current VF has finished resetting, move on
1634              * to the next VF in sequence.
1635              */
1636             v++;
1637         }
1638     }
1639
1640     if (flr)
1641         usleep_range(10000, 20000);
1642
1643     /* Display a warning if at least one VF didn't manage to reset in
1644      * time, but continue on with the operation.
1645      */
1646     if (v < pf->num_alloc_vfs)
1647         dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1648             pf->vf[v].vf_id);
1649     usleep_range(10000, 20000);
1650
1651     /* Begin disabling all the rings associated with VFs, but do not wait
1652      * between each VF.
1653      */
1654     for (v = 0; v < pf->num_alloc_vfs; v++) {
1655         /* On initial reset, we don't have any queues to disable */
1656         if (pf->vf[v].lan_vsi_idx == 0)
1657             continue;
1658
1659         i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[v].lan_vsi_idx]);
1660     }
1661
1662     /* Now that we've notified HW to disable all of the VF rings, wait
1663      * until they finish.
1664      */
1665     for (v = 0; v < pf->num_alloc_vfs; v++) {
1666         /* On initial reset, we don't have any queues to disable */
1667         if (pf->vf[v].lan_vsi_idx == 0)
1668             continue;
1669
1670         i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[v].lan_vsi_idx]);
1671     }
1672
1673     /* Hw may need up to 50ms to finish disabling the RX queues. We
1674      * minimize the wait by delaying only once for all VFs.
1675      */
1676     mdelay(50);
1677
1678     /* Finish the reset on each VF */
1679     for (v = 0; v < pf->num_alloc_vfs; v++)
1680         i40e_cleanup_reset_vf(&pf->vf[v]);
1681
1682     i40e_flush(hw);
1683     clear_bit(__I40E_VF_DISABLE, pf->state);
1684
1685     return true;
1686 }
1687
1688 /**
1689  * i40e_free_vfs
1690  * @pf: pointer to the PF structure
1691  *
1692  * free VF resources
1693  **/
1694 void i40e_free_vfs(struct i40e_pf *pf)
1695 {
1696     struct i40e_hw *hw = &pf->hw;
1697     u32 reg_idx, bit_idx;
1698     int i, tmp, vf_id;
1699
1700     if (!pf->vf)
1701         return;
1702
1703     set_bit(__I40E_VFS_RELEASING, pf->state);
1704     while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1705         usleep_range(1000, 2000);
1706
1707     i40e_notify_client_of_vf_enable(pf, 0);
1708
1709     /* Disable IOV before freeing resources. This lets any VF drivers
1710      * running in the host get themselves cleaned up before we yank
1711      * the carpet out from underneath their feet.
1712      */
1713     if (!pci_vfs_assigned(pf->pdev))
1714         pci_disable_sriov(pf->pdev);
1715     else
1716         dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1717
1718     /* Amortize wait time by stopping all VFs at the same time */
1719     for (i = 0; i < pf->num_alloc_vfs; i++) {
1720         if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1721             continue;
1722
1723         i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1724     }
1725
1726     for (i = 0; i < pf->num_alloc_vfs; i++) {
1727         if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1728             continue;
1729
1730         i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1731     }
1732
1733     /* free up VF resources */
1734     tmp = pf->num_alloc_vfs;
1735     pf->num_alloc_vfs = 0;
1736     for (i = 0; i < tmp; i++) {
1737         if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1738             i40e_free_vf_res(&pf->vf[i]);
1739         /* disable qp mappings */
1740         i40e_disable_vf_mappings(&pf->vf[i]);
1741     }
1742
1743     kfree(pf->vf);
1744     pf->vf = NULL;
1745
1746     /* This check is for when the driver is unloaded while VFs are
1747      * assigned. Setting the number of VFs to 0 through sysfs is caught
1748      * before this function ever gets called.
1749      */
1750     if (!pci_vfs_assigned(pf->pdev)) {
1751         /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1752          * work correctly when SR-IOV gets re-enabled.
1753          */
1754         for (vf_id = 0; vf_id < tmp; vf_id++) {
1755             reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1756             bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1757             wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1758         }
1759     }
1760     clear_bit(__I40E_VF_DISABLE, pf->state);
1761     clear_bit(__I40E_VFS_RELEASING, pf->state);
1762 }
1763
1764 #ifdef CONFIG_PCI_IOV
1765 /**
1766  * i40e_alloc_vfs
1767  * @pf: pointer to the PF structure
1768  * @num_alloc_vfs: number of VFs to allocate
1769  *
1770  * allocate VF resources
1771  **/
1772 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1773 {
1774     struct i40e_vf *vfs;
1775     int i, ret = 0;
1776
1777     /* Disable interrupt 0 so we don't try to handle the VFLR. */
1778     i40e_irq_dynamic_disable_icr0(pf);
1779
1780     /* Check to see if we're just allocating resources for extant VFs */
1781     if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1782         ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1783         if (ret) {
1784             pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1785             pf->num_alloc_vfs = 0;
1786             goto err_iov;
1787         }
1788     }
1789     /* allocate memory */
1790     vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1791     if (!vfs) {
1792         ret = -ENOMEM;
1793         goto err_alloc;
1794     }
1795     pf->vf = vfs;
1796
1797     /* apply default profile */
1798     for (i = 0; i < num_alloc_vfs; i++) {
1799         vfs[i].pf = pf;
1800         vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1801         vfs[i].vf_id = i;
1802
1803         /* assign default capabilities */
1804         set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1805         vfs[i].spoofchk = true;
1806
1807         set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1808
1809     }
1810     pf->num_alloc_vfs = num_alloc_vfs;
1811
1812     /* VF resources get allocated during reset */
1813     i40e_reset_all_vfs(pf, false);
1814
1815     i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1816
1817 err_alloc:
1818     if (ret)
1819         i40e_free_vfs(pf);
1820 err_iov:
1821     /* Re-enable interrupt 0. */
1822     i40e_irq_dynamic_enable_icr0(pf);
1823     return ret;
1824 }
1825
1826 #endif
1827 /**
1828  * i40e_pci_sriov_enable
1829  * @pdev: pointer to a pci_dev structure
1830  * @num_vfs: number of VFs to allocate
1831  *
1832  * Enable or change the number of VFs
1833  **/
1834 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1835 {
1836 #ifdef CONFIG_PCI_IOV
1837     struct i40e_pf *pf = pci_get_drvdata(pdev);
1838     int pre_existing_vfs = pci_num_vf(pdev);
1839     int err = 0;
1840
1841     if (test_bit(__I40E_TESTING, pf->state)) {
1842         dev_warn(&pdev->dev,
1843              "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1844         err = -EPERM;
1845         goto err_out;
1846     }
1847
1848     if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1849         i40e_free_vfs(pf);
1850     else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1851         goto out;
1852
1853     if (num_vfs > pf->num_req_vfs) {
1854         dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1855              num_vfs, pf->num_req_vfs);
1856         err = -EPERM;
1857         goto err_out;
1858     }
1859
1860     dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1861     err = i40e_alloc_vfs(pf, num_vfs);
1862     if (err) {
1863         dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1864         goto err_out;
1865     }
1866
1867 out:
1868     return num_vfs;
1869
1870 err_out:
1871     return err;
1872 #endif
1873     return 0;
1874 }
1875
1876 /**
1877  * i40e_pci_sriov_configure
1878  * @pdev: pointer to a pci_dev structure
1879  * @num_vfs: number of VFs to allocate
1880  *
1881  * Enable or change the number of VFs. Called when the user updates the number
1882  * of VFs in sysfs.
1883  **/
1884 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1885 {
1886     struct i40e_pf *pf = pci_get_drvdata(pdev);
1887     int ret = 0;
1888
1889     if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
1890         dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
1891         return -EAGAIN;
1892     }
1893
1894     if (num_vfs) {
1895         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1896             pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1897             i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1898         }
1899         ret = i40e_pci_sriov_enable(pdev, num_vfs);
1900         goto sriov_configure_out;
1901     }
1902
1903     if (!pci_vfs_assigned(pf->pdev)) {
1904         i40e_free_vfs(pf);
1905         pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1906         i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1907     } else {
1908         dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1909         ret = -EINVAL;
1910         goto sriov_configure_out;
1911     }
1912 sriov_configure_out:
1913     clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
1914     return ret;
1915 }
1916
1917 /***********************virtual channel routines******************/
1918
1919 /**
1920  * i40e_vc_send_msg_to_vf
1921  * @vf: pointer to the VF info
1922  * @v_opcode: virtual channel opcode
1923  * @v_retval: virtual channel return value
1924  * @msg: pointer to the msg buffer
1925  * @msglen: msg length
1926  *
1927  * send msg to VF
1928  **/
1929 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1930                   u32 v_retval, u8 *msg, u16 msglen)
1931 {
1932     struct i40e_pf *pf;
1933     struct i40e_hw *hw;
1934     int abs_vf_id;
1935     i40e_status aq_ret;
1936
1937     /* validate the request */
1938     if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1939         return -EINVAL;
1940
1941     pf = vf->pf;
1942     hw = &pf->hw;
1943     abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1944
1945     aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id,  v_opcode, v_retval,
1946                     msg, msglen, NULL);
1947     if (aq_ret) {
1948         dev_info(&pf->pdev->dev,
1949              "Unable to send the message to VF %d aq_err %d\n",
1950              vf->vf_id, pf->hw.aq.asq_last_status);
1951         return -EIO;
1952     }
1953
1954     return 0;
1955 }
1956
1957 /**
1958  * i40e_vc_send_resp_to_vf
1959  * @vf: pointer to the VF info
1960  * @opcode: operation code
1961  * @retval: return value
1962  *
1963  * send resp msg to VF
1964  **/
1965 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
1966                    enum virtchnl_ops opcode,
1967                    i40e_status retval)
1968 {
1969     return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
1970 }
1971
1972 /**
1973  * i40e_sync_vf_state
1974  * @vf: pointer to the VF info
1975  * @state: VF state
1976  *
1977  * Called from a VF message to synchronize the service with a potential
1978  * VF reset state
1979  **/
1980 static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state)
1981 {
1982     int i;
1983
1984     /* When handling some messages, it needs VF state to be set.
1985      * It is possible that this flag is cleared during VF reset,
1986      * so there is a need to wait until the end of the reset to
1987      * handle the request message correctly.
1988      */
1989     for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) {
1990         if (test_bit(state, &vf->vf_states))
1991             return true;
1992         usleep_range(10000, 20000);
1993     }
1994
1995     return test_bit(state, &vf->vf_states);
1996 }
1997
1998 /**
1999  * i40e_vc_get_version_msg
2000  * @vf: pointer to the VF info
2001  * @msg: pointer to the msg buffer
2002  *
2003  * called from the VF to request the API version used by the PF
2004  **/
2005 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
2006 {
2007     struct virtchnl_version_info info = {
2008         VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
2009     };
2010
2011     vf->vf_ver = *(struct virtchnl_version_info *)msg;
2012     /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
2013     if (VF_IS_V10(&vf->vf_ver))
2014         info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
2015     return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
2016                       I40E_SUCCESS, (u8 *)&info,
2017                       sizeof(struct virtchnl_version_info));
2018 }
2019
2020 /**
2021  * i40e_del_qch - delete all the additional VSIs created as a part of ADq
2022  * @vf: pointer to VF structure
2023  **/
2024 static void i40e_del_qch(struct i40e_vf *vf)
2025 {
2026     struct i40e_pf *pf = vf->pf;
2027     int i;
2028
2029     /* first element in the array belongs to primary VF VSI and we shouldn't
2030      * delete it. We should however delete the rest of the VSIs created
2031      */
2032     for (i = 1; i < vf->num_tc; i++) {
2033         if (vf->ch[i].vsi_idx) {
2034             i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
2035             vf->ch[i].vsi_idx = 0;
2036             vf->ch[i].vsi_id = 0;
2037         }
2038     }
2039 }
2040
2041 /**
2042  * i40e_vc_get_max_frame_size
2043  * @vf: pointer to the VF
2044  *
2045  * Max frame size is determined based on the current port's max frame size and
2046  * whether a port VLAN is configured on this VF. The VF is not aware whether
2047  * it's in a port VLAN so the PF needs to account for this in max frame size
2048  * checks and sending the max frame size to the VF.
2049  **/
2050 static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf)
2051 {
2052     u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size;
2053
2054     if (vf->port_vlan_id)
2055         max_frame_size -= VLAN_HLEN;
2056
2057     return max_frame_size;
2058 }
2059
2060 /**
2061  * i40e_vc_get_vf_resources_msg
2062  * @vf: pointer to the VF info
2063  * @msg: pointer to the msg buffer
2064  *
2065  * called from the VF to request its resources
2066  **/
2067 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
2068 {
2069     struct virtchnl_vf_resource *vfres = NULL;
2070     struct i40e_pf *pf = vf->pf;
2071     i40e_status aq_ret = 0;
2072     struct i40e_vsi *vsi;
2073     int num_vsis = 1;
2074     size_t len = 0;
2075     int ret;
2076
2077     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) {
2078         aq_ret = I40E_ERR_PARAM;
2079         goto err;
2080     }
2081
2082     len = struct_size(vfres, vsi_res, num_vsis);
2083     vfres = kzalloc(len, GFP_KERNEL);
2084     if (!vfres) {
2085         aq_ret = I40E_ERR_NO_MEMORY;
2086         len = 0;
2087         goto err;
2088     }
2089     if (VF_IS_V11(&vf->vf_ver))
2090         vf->driver_caps = *(u32 *)msg;
2091     else
2092         vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
2093                   VIRTCHNL_VF_OFFLOAD_RSS_REG |
2094                   VIRTCHNL_VF_OFFLOAD_VLAN;
2095
2096     vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
2097     vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
2098     vsi = pf->vsi[vf->lan_vsi_idx];
2099     if (!vsi->info.pvid)
2100         vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
2101
2102     if (i40e_vf_client_capable(pf, vf->vf_id) &&
2103         (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_IWARP)) {
2104         vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_IWARP;
2105         set_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
2106     } else {
2107         clear_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
2108     }
2109
2110     if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2111         vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
2112     } else {
2113         if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
2114             (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
2115             vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
2116         else
2117             vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
2118     }
2119
2120     if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
2121         if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
2122             vfres->vf_cap_flags |=
2123                 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
2124     }
2125
2126     if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
2127         vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
2128
2129     if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) &&
2130         (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
2131         vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
2132
2133     if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
2134         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
2135             dev_err(&pf->pdev->dev,
2136                 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
2137                  vf->vf_id);
2138             aq_ret = I40E_ERR_PARAM;
2139             goto err;
2140         }
2141         vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
2142     }
2143
2144     if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) {
2145         if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2146             vfres->vf_cap_flags |=
2147                     VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
2148     }
2149
2150     if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
2151         vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
2152
2153     if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
2154         vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
2155
2156     vfres->num_vsis = num_vsis;
2157     vfres->num_queue_pairs = vf->num_queue_pairs;
2158     vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
2159     vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
2160     vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
2161     vfres->max_mtu = i40e_vc_get_max_frame_size(vf);
2162
2163     if (vf->lan_vsi_idx) {
2164         vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
2165         vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
2166         vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
2167         /* VFs only use TC 0 */
2168         vfres->vsi_res[0].qset_handle
2169                       = le16_to_cpu(vsi->info.qs_handle[0]);
2170         if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_USO) && !vf->pf_set_mac) {
2171             i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
2172             eth_zero_addr(vf->default_lan_addr.addr);
2173         }
2174         ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
2175                 vf->default_lan_addr.addr);
2176     }
2177     set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
2178
2179 err:
2180     /* send the response back to the VF */
2181     ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
2182                      aq_ret, (u8 *)vfres, len);
2183
2184     kfree(vfres);
2185     return ret;
2186 }
2187
2188 /**
2189  * i40e_vc_config_promiscuous_mode_msg
2190  * @vf: pointer to the VF info
2191  * @msg: pointer to the msg buffer
2192  *
2193  * called from the VF to configure the promiscuous mode of
2194  * VF vsis
2195  **/
2196 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2197 {
2198     struct virtchnl_promisc_info *info =
2199         (struct virtchnl_promisc_info *)msg;
2200     struct i40e_pf *pf = vf->pf;
2201     i40e_status aq_ret = 0;
2202     bool allmulti = false;
2203     bool alluni = false;
2204
2205     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2206         aq_ret = I40E_ERR_PARAM;
2207         goto err_out;
2208     }
2209     if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2210         dev_err(&pf->pdev->dev,
2211             "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2212             vf->vf_id);
2213
2214         /* Lie to the VF on purpose, because this is an error we can
2215          * ignore. Unprivileged VF is not a virtual channel error.
2216          */
2217         aq_ret = 0;
2218         goto err_out;
2219     }
2220
2221     if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2222         aq_ret = I40E_ERR_PARAM;
2223         goto err_out;
2224     }
2225
2226     if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
2227         aq_ret = I40E_ERR_PARAM;
2228         goto err_out;
2229     }
2230
2231     /* Multicast promiscuous handling*/
2232     if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2233         allmulti = true;
2234
2235     if (info->flags & FLAG_VF_UNICAST_PROMISC)
2236         alluni = true;
2237     aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
2238                          alluni);
2239     if (aq_ret)
2240         goto err_out;
2241
2242     if (allmulti) {
2243         if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
2244                       &vf->vf_states))
2245             dev_info(&pf->pdev->dev,
2246                  "VF %d successfully set multicast promiscuous mode\n",
2247                  vf->vf_id);
2248     } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
2249                       &vf->vf_states))
2250         dev_info(&pf->pdev->dev,
2251              "VF %d successfully unset multicast promiscuous mode\n",
2252              vf->vf_id);
2253
2254     if (alluni) {
2255         if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
2256                       &vf->vf_states))
2257             dev_info(&pf->pdev->dev,
2258                  "VF %d successfully set unicast promiscuous mode\n",
2259                  vf->vf_id);
2260     } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
2261                       &vf->vf_states))
2262         dev_info(&pf->pdev->dev,
2263              "VF %d successfully unset unicast promiscuous mode\n",
2264              vf->vf_id);
2265
2266 err_out:
2267     /* send the response to the VF */
2268     return i40e_vc_send_resp_to_vf(vf,
2269                        VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2270                        aq_ret);
2271 }
2272
2273 /**
2274  * i40e_vc_config_queues_msg
2275  * @vf: pointer to the VF info
2276  * @msg: pointer to the msg buffer
2277  *
2278  * called from the VF to configure the rx/tx
2279  * queues
2280  **/
2281 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2282 {
2283     struct virtchnl_vsi_queue_config_info *qci =
2284         (struct virtchnl_vsi_queue_config_info *)msg;
2285     struct virtchnl_queue_pair_info *qpi;
2286     u16 vsi_id, vsi_queue_id = 0;
2287     struct i40e_pf *pf = vf->pf;
2288     i40e_status aq_ret = 0;
2289     int i, j = 0, idx = 0;
2290     struct i40e_vsi *vsi;
2291     u16 num_qps_all = 0;
2292
2293     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2294         aq_ret = I40E_ERR_PARAM;
2295         goto error_param;
2296     }
2297
2298     if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2299         aq_ret = I40E_ERR_PARAM;
2300         goto error_param;
2301     }
2302
2303     if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2304         aq_ret = I40E_ERR_PARAM;
2305         goto error_param;
2306     }
2307
2308     if (vf->adq_enabled) {
2309         for (i = 0; i < vf->num_tc; i++)
2310             num_qps_all += vf->ch[i].num_qps;
2311         if (num_qps_all != qci->num_queue_pairs) {
2312             aq_ret = I40E_ERR_PARAM;
2313             goto error_param;
2314         }
2315     }
2316
2317     vsi_id = qci->vsi_id;
2318
2319     for (i = 0; i < qci->num_queue_pairs; i++) {
2320         qpi = &qci->qpair[i];
2321
2322         if (!vf->adq_enabled) {
2323             if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2324                               qpi->txq.queue_id)) {
2325                 aq_ret = I40E_ERR_PARAM;
2326                 goto error_param;
2327             }
2328
2329             vsi_queue_id = qpi->txq.queue_id;
2330
2331             if (qpi->txq.vsi_id != qci->vsi_id ||
2332                 qpi->rxq.vsi_id != qci->vsi_id ||
2333                 qpi->rxq.queue_id != vsi_queue_id) {
2334                 aq_ret = I40E_ERR_PARAM;
2335                 goto error_param;
2336             }
2337         }
2338
2339         if (vf->adq_enabled) {
2340             if (idx >= ARRAY_SIZE(vf->ch)) {
2341                 aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
2342                 goto error_param;
2343             }
2344             vsi_id = vf->ch[idx].vsi_id;
2345         }
2346
2347         if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2348                          &qpi->rxq) ||
2349             i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2350                          &qpi->txq)) {
2351             aq_ret = I40E_ERR_PARAM;
2352             goto error_param;
2353         }
2354
2355         /* For ADq there can be up to 4 VSIs with max 4 queues each.
2356          * VF does not know about these additional VSIs and all
2357          * it cares is about its own queues. PF configures these queues
2358          * to its appropriate VSIs based on TC mapping
2359          */
2360         if (vf->adq_enabled) {
2361             if (idx >= ARRAY_SIZE(vf->ch)) {
2362                 aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
2363                 goto error_param;
2364             }
2365             if (j == (vf->ch[idx].num_qps - 1)) {
2366                 idx++;
2367                 j = 0; /* resetting the queue count */
2368                 vsi_queue_id = 0;
2369             } else {
2370                 j++;
2371                 vsi_queue_id++;
2372             }
2373         }
2374     }
2375     /* set vsi num_queue_pairs in use to num configured by VF */
2376     if (!vf->adq_enabled) {
2377         pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2378             qci->num_queue_pairs;
2379     } else {
2380         for (i = 0; i < vf->num_tc; i++) {
2381             vsi = pf->vsi[vf->ch[i].vsi_idx];
2382             vsi->num_queue_pairs = vf->ch[i].num_qps;
2383
2384             if (i40e_update_adq_vsi_queues(vsi, i)) {
2385                 aq_ret = I40E_ERR_CONFIG;
2386                 goto error_param;
2387             }
2388         }
2389     }
2390
2391 error_param:
2392     /* send the response to the VF */
2393     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2394                        aq_ret);
2395 }
2396
2397 /**
2398  * i40e_validate_queue_map - check queue map is valid
2399  * @vf: the VF structure pointer
2400  * @vsi_id: vsi id
2401  * @queuemap: Tx or Rx queue map
2402  *
2403  * check if Tx or Rx queue map is valid
2404  **/
2405 static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2406                    unsigned long queuemap)
2407 {
2408     u16 vsi_queue_id, queue_id;
2409
2410     for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2411         if (vf->adq_enabled) {
2412             vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2413             queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2414         } else {
2415             queue_id = vsi_queue_id;
2416         }
2417
2418         if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2419             return -EINVAL;
2420     }
2421
2422     return 0;
2423 }
2424
2425 /**
2426  * i40e_vc_config_irq_map_msg
2427  * @vf: pointer to the VF info
2428  * @msg: pointer to the msg buffer
2429  *
2430  * called from the VF to configure the irq to
2431  * queue map
2432  **/
2433 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2434 {
2435     struct virtchnl_irq_map_info *irqmap_info =
2436         (struct virtchnl_irq_map_info *)msg;
2437     struct virtchnl_vector_map *map;
2438     u16 vsi_id;
2439     i40e_status aq_ret = 0;
2440     int i;
2441
2442     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2443         aq_ret = I40E_ERR_PARAM;
2444         goto error_param;
2445     }
2446
2447     if (irqmap_info->num_vectors >
2448         vf->pf->hw.func_caps.num_msix_vectors_vf) {
2449         aq_ret = I40E_ERR_PARAM;
2450         goto error_param;
2451     }
2452
2453     for (i = 0; i < irqmap_info->num_vectors; i++) {
2454         map = &irqmap_info->vecmap[i];
2455         /* validate msg params */
2456         if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
2457             !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
2458             aq_ret = I40E_ERR_PARAM;
2459             goto error_param;
2460         }
2461         vsi_id = map->vsi_id;
2462
2463         if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2464             aq_ret = I40E_ERR_PARAM;
2465             goto error_param;
2466         }
2467
2468         if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2469             aq_ret = I40E_ERR_PARAM;
2470             goto error_param;
2471         }
2472
2473         i40e_config_irq_link_list(vf, vsi_id, map);
2474     }
2475 error_param:
2476     /* send the response to the VF */
2477     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2478                        aq_ret);
2479 }
2480
2481 /**
2482  * i40e_ctrl_vf_tx_rings
2483  * @vsi: the SRIOV VSI being configured
2484  * @q_map: bit map of the queues to be enabled
2485  * @enable: start or stop the queue
2486  **/
2487 static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2488                  bool enable)
2489 {
2490     struct i40e_pf *pf = vsi->back;
2491     int ret = 0;
2492     u16 q_id;
2493
2494     for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2495         ret = i40e_control_wait_tx_q(vsi->seid, pf,
2496                          vsi->base_queue + q_id,
2497                          false /*is xdp*/, enable);
2498         if (ret)
2499             break;
2500     }
2501     return ret;
2502 }
2503
2504 /**
2505  * i40e_ctrl_vf_rx_rings
2506  * @vsi: the SRIOV VSI being configured
2507  * @q_map: bit map of the queues to be enabled
2508  * @enable: start or stop the queue
2509  **/
2510 static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2511                  bool enable)
2512 {
2513     struct i40e_pf *pf = vsi->back;
2514     int ret = 0;
2515     u16 q_id;
2516
2517     for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2518         ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
2519                          enable);
2520         if (ret)
2521             break;
2522     }
2523     return ret;
2524 }
2525
2526 /**
2527  * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
2528  * @vqs: virtchnl_queue_select structure containing bitmaps to validate
2529  *
2530  * Returns true if validation was successful, else false.
2531  */
2532 static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
2533 {
2534     if ((!vqs->rx_queues && !vqs->tx_queues) ||
2535         vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
2536         vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
2537         return false;
2538
2539     return true;
2540 }
2541
2542 /**
2543  * i40e_vc_enable_queues_msg
2544  * @vf: pointer to the VF info
2545  * @msg: pointer to the msg buffer
2546  *
2547  * called from the VF to enable all or specific queue(s)
2548  **/
2549 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2550 {
2551     struct virtchnl_queue_select *vqs =
2552         (struct virtchnl_queue_select *)msg;
2553     struct i40e_pf *pf = vf->pf;
2554     i40e_status aq_ret = 0;
2555     int i;
2556
2557     if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2558         aq_ret = I40E_ERR_PARAM;
2559         goto error_param;
2560     }
2561
2562     if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2563         aq_ret = I40E_ERR_PARAM;
2564         goto error_param;
2565     }
2566
2567     if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2568         aq_ret = I40E_ERR_PARAM;
2569         goto error_param;
2570     }
2571
2572     /* Use the queue bit map sent by the VF */
2573     if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2574                   true)) {
2575         aq_ret = I40E_ERR_TIMEOUT;
2576         goto error_param;
2577     }
2578     if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2579                   true)) {
2580         aq_ret = I40E_ERR_TIMEOUT;
2581         goto error_param;
2582     }
2583
2584     /* need to start the rings for additional ADq VSI's as well */
2585     if (vf->adq_enabled) {
2586         /* zero belongs to LAN VSI */
2587         for (i = 1; i < vf->num_tc; i++) {
2588             if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2589                 aq_ret = I40E_ERR_TIMEOUT;
2590         }
2591     }
2592
2593 error_param:
2594     /* send the response to the VF */
2595     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2596                        aq_ret);
2597 }
2598
2599 /**
2600  * i40e_vc_disable_queues_msg
2601  * @vf: pointer to the VF info
2602  * @msg: pointer to the msg buffer
2603  *
2604  * called from the VF to disable all or specific
2605  * queue(s)
2606  **/
2607 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2608 {
2609     struct virtchnl_queue_select *vqs =
2610         (struct virtchnl_queue_select *)msg;
2611     struct i40e_pf *pf = vf->pf;
2612     i40e_status aq_ret = 0;
2613
2614     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2615         aq_ret = I40E_ERR_PARAM;
2616         goto error_param;
2617     }
2618
2619     if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2620         aq_ret = I40E_ERR_PARAM;
2621         goto error_param;
2622     }
2623
2624     if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2625         aq_ret = I40E_ERR_PARAM;
2626         goto error_param;
2627     }
2628
2629     /* Use the queue bit map sent by the VF */
2630     if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2631                   false)) {
2632         aq_ret = I40E_ERR_TIMEOUT;
2633         goto error_param;
2634     }
2635     if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2636                   false)) {
2637         aq_ret = I40E_ERR_TIMEOUT;
2638         goto error_param;
2639     }
2640 error_param:
2641     /* send the response to the VF */
2642     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2643                        aq_ret);
2644 }
2645
2646 /**
2647  * i40e_check_enough_queue - find big enough queue number
2648  * @vf: pointer to the VF info
2649  * @needed: the number of items needed
2650  *
2651  * Returns the base item index of the queue, or negative for error
2652  **/
2653 static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2654 {
2655     unsigned int  i, cur_queues, more, pool_size;
2656     struct i40e_lump_tracking *pile;
2657     struct i40e_pf *pf = vf->pf;
2658     struct i40e_vsi *vsi;
2659
2660     vsi = pf->vsi[vf->lan_vsi_idx];
2661     cur_queues = vsi->alloc_queue_pairs;
2662
2663     /* if current allocated queues are enough for need */
2664     if (cur_queues >= needed)
2665         return vsi->base_queue;
2666
2667     pile = pf->qp_pile;
2668     if (cur_queues > 0) {
2669         /* if the allocated queues are not zero
2670          * just check if there are enough queues for more
2671          * behind the allocated queues.
2672          */
2673         more = needed - cur_queues;
2674         for (i = vsi->base_queue + cur_queues;
2675             i < pile->num_entries; i++) {
2676             if (pile->list[i] & I40E_PILE_VALID_BIT)
2677                 break;
2678
2679             if (more-- == 1)
2680                 /* there is enough */
2681                 return vsi->base_queue;
2682         }
2683     }
2684
2685     pool_size = 0;
2686     for (i = 0; i < pile->num_entries; i++) {
2687         if (pile->list[i] & I40E_PILE_VALID_BIT) {
2688             pool_size = 0;
2689             continue;
2690         }
2691         if (needed <= ++pool_size)
2692             /* there is enough */
2693             return i;
2694     }
2695
2696     return -ENOMEM;
2697 }
2698
2699 /**
2700  * i40e_vc_request_queues_msg
2701  * @vf: pointer to the VF info
2702  * @msg: pointer to the msg buffer
2703  *
2704  * VFs get a default number of queues but can use this message to request a
2705  * different number.  If the request is successful, PF will reset the VF and
2706  * return 0.  If unsuccessful, PF will send message informing VF of number of
2707  * available queues and return result of sending VF a message.
2708  **/
2709 static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2710 {
2711     struct virtchnl_vf_res_request *vfres =
2712         (struct virtchnl_vf_res_request *)msg;
2713     u16 req_pairs = vfres->num_queue_pairs;
2714     u8 cur_pairs = vf->num_queue_pairs;
2715     struct i40e_pf *pf = vf->pf;
2716
2717     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
2718         return -EINVAL;
2719
2720     if (req_pairs > I40E_MAX_VF_QUEUES) {
2721         dev_err(&pf->pdev->dev,
2722             "VF %d tried to request more than %d queues.\n",
2723             vf->vf_id,
2724             I40E_MAX_VF_QUEUES);
2725         vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2726     } else if (req_pairs - cur_pairs > pf->queues_left) {
2727         dev_warn(&pf->pdev->dev,
2728              "VF %d requested %d more queues, but only %d left.\n",
2729              vf->vf_id,
2730              req_pairs - cur_pairs,
2731              pf->queues_left);
2732         vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2733     } else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
2734         dev_warn(&pf->pdev->dev,
2735              "VF %d requested %d more queues, but there is not enough for it.\n",
2736              vf->vf_id,
2737              req_pairs - cur_pairs);
2738         vfres->num_queue_pairs = cur_pairs;
2739     } else {
2740         /* successful request */
2741         vf->num_req_queues = req_pairs;
2742         i40e_vc_reset_vf(vf, true);
2743         return 0;
2744     }
2745
2746     return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2747                       (u8 *)vfres, sizeof(*vfres));
2748 }
2749
2750 /**
2751  * i40e_vc_get_stats_msg
2752  * @vf: pointer to the VF info
2753  * @msg: pointer to the msg buffer
2754  *
2755  * called from the VF to get vsi stats
2756  **/
2757 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2758 {
2759     struct virtchnl_queue_select *vqs =
2760         (struct virtchnl_queue_select *)msg;
2761     struct i40e_pf *pf = vf->pf;
2762     struct i40e_eth_stats stats;
2763     i40e_status aq_ret = 0;
2764     struct i40e_vsi *vsi;
2765
2766     memset(&stats, 0, sizeof(struct i40e_eth_stats));
2767
2768     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2769         aq_ret = I40E_ERR_PARAM;
2770         goto error_param;
2771     }
2772
2773     if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2774         aq_ret = I40E_ERR_PARAM;
2775         goto error_param;
2776     }
2777
2778     vsi = pf->vsi[vf->lan_vsi_idx];
2779     if (!vsi) {
2780         aq_ret = I40E_ERR_PARAM;
2781         goto error_param;
2782     }
2783     i40e_update_eth_stats(vsi);
2784     stats = vsi->eth_stats;
2785
2786 error_param:
2787     /* send the response back to the VF */
2788     return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2789                       (u8 *)&stats, sizeof(stats));
2790 }
2791
2792 #define I40E_MAX_MACVLAN_PER_HW 3072
2793 #define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW /   \
2794     (num_ports))
2795 /* If the VF is not trusted restrict the number of MAC/VLAN it can program
2796  * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2797  */
2798 #define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2799 #define I40E_VC_MAX_VLAN_PER_VF 16
2800
2801 #define I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(vf_num, num_ports)       \
2802 ({  typeof(vf_num) vf_num_ = (vf_num);              \
2803     typeof(num_ports) num_ports_ = (num_ports);         \
2804     ((I40E_MAX_MACVLAN_PER_PF(num_ports_) - vf_num_ *       \
2805     I40E_VC_MAX_MAC_ADDR_PER_VF) / vf_num_) +           \
2806     I40E_VC_MAX_MAC_ADDR_PER_VF; })
2807 /**
2808  * i40e_check_vf_permission
2809  * @vf: pointer to the VF info
2810  * @al: MAC address list from virtchnl
2811  *
2812  * Check that the given list of MAC addresses is allowed. Will return -EPERM
2813  * if any address in the list is not valid. Checks the following conditions:
2814  *
2815  * 1) broadcast and zero addresses are never valid
2816  * 2) unicast addresses are not allowed if the VMM has administratively set
2817  *    the VF MAC address, unless the VF is marked as privileged.
2818  * 3) There is enough space to add all the addresses.
2819  *
2820  * Note that to guarantee consistency, it is expected this function be called
2821  * while holding the mac_filter_hash_lock, as otherwise the current number of
2822  * addresses might not be accurate.
2823  **/
2824 static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2825                        struct virtchnl_ether_addr_list *al)
2826 {
2827     struct i40e_pf *pf = vf->pf;
2828     struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2829     struct i40e_hw *hw = &pf->hw;
2830     int mac2add_cnt = 0;
2831     int i;
2832
2833     for (i = 0; i < al->num_elements; i++) {
2834         struct i40e_mac_filter *f;
2835         u8 *addr = al->list[i].addr;
2836
2837         if (is_broadcast_ether_addr(addr) ||
2838             is_zero_ether_addr(addr)) {
2839             dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2840                 addr);
2841             return I40E_ERR_INVALID_MAC_ADDR;
2842         }
2843
2844         /* If the host VMM administrator has set the VF MAC address
2845          * administratively via the ndo_set_vf_mac command then deny
2846          * permission to the VF to add or delete unicast MAC addresses.
2847          * Unless the VF is privileged and then it can do whatever.
2848          * The VF may request to set the MAC address filter already
2849          * assigned to it so do not return an error in that case.
2850          */
2851         if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2852             !is_multicast_ether_addr(addr) && vf->pf_set_mac &&
2853             !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2854             dev_err(&pf->pdev->dev,
2855                 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2856             return -EPERM;
2857         }
2858
2859         /*count filters that really will be added*/
2860         f = i40e_find_mac(vsi, addr);
2861         if (!f)
2862             ++mac2add_cnt;
2863     }
2864
2865     /* If this VF is not privileged, then we can't add more than a limited
2866      * number of addresses. Check to make sure that the additions do not
2867      * push us over the limit.
2868      */
2869     if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2870         if ((i40e_count_filters(vsi) + mac2add_cnt) >
2871             I40E_VC_MAX_MAC_ADDR_PER_VF) {
2872             dev_err(&pf->pdev->dev,
2873                 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2874             return -EPERM;
2875         }
2876     /* If this VF is trusted, it can use more resources than untrusted.
2877      * However to ensure that every trusted VF has appropriate number of
2878      * resources, divide whole pool of resources per port and then across
2879      * all VFs.
2880      */
2881     } else {
2882         if ((i40e_count_filters(vsi) + mac2add_cnt) >
2883             I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs,
2884                                hw->num_ports)) {
2885             dev_err(&pf->pdev->dev,
2886                 "Cannot add more MAC addresses, trusted VF exhausted it's resources\n");
2887             return -EPERM;
2888         }
2889     }
2890     return 0;
2891 }
2892
2893 /**
2894  * i40e_vc_add_mac_addr_msg
2895  * @vf: pointer to the VF info
2896  * @msg: pointer to the msg buffer
2897  *
2898  * add guest mac address filter
2899  **/
2900 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2901 {
2902     struct virtchnl_ether_addr_list *al =
2903         (struct virtchnl_ether_addr_list *)msg;
2904     struct i40e_pf *pf = vf->pf;
2905     struct i40e_vsi *vsi = NULL;
2906     i40e_status ret = 0;
2907     int i;
2908
2909     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
2910         !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2911         ret = I40E_ERR_PARAM;
2912         goto error_param;
2913     }
2914
2915     vsi = pf->vsi[vf->lan_vsi_idx];
2916
2917     /* Lock once, because all function inside for loop accesses VSI's
2918      * MAC filter list which needs to be protected using same lock.
2919      */
2920     spin_lock_bh(&vsi->mac_filter_hash_lock);
2921
2922     ret = i40e_check_vf_permission(vf, al);
2923     if (ret) {
2924         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2925         goto error_param;
2926     }
2927
2928     /* add new addresses to the list */
2929     for (i = 0; i < al->num_elements; i++) {
2930         struct i40e_mac_filter *f;
2931
2932         f = i40e_find_mac(vsi, al->list[i].addr);
2933         if (!f) {
2934             f = i40e_add_mac_filter(vsi, al->list[i].addr);
2935
2936             if (!f) {
2937                 dev_err(&pf->pdev->dev,
2938                     "Unable to add MAC filter %pM for VF %d\n",
2939                     al->list[i].addr, vf->vf_id);
2940                 ret = I40E_ERR_PARAM;
2941                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2942                 goto error_param;
2943             }
2944             if (is_valid_ether_addr(al->list[i].addr) &&
2945                 is_zero_ether_addr(vf->default_lan_addr.addr))
2946                 ether_addr_copy(vf->default_lan_addr.addr,
2947                         al->list[i].addr);
2948         }
2949     }
2950     spin_unlock_bh(&vsi->mac_filter_hash_lock);
2951
2952     /* program the updated filter list */
2953     ret = i40e_sync_vsi_filters(vsi);
2954     if (ret)
2955         dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2956             vf->vf_id, ret);
2957
2958 error_param:
2959     /* send the response to the VF */
2960     return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
2961                       ret, NULL, 0);
2962 }
2963
2964 /**
2965  * i40e_vc_del_mac_addr_msg
2966  * @vf: pointer to the VF info
2967  * @msg: pointer to the msg buffer
2968  *
2969  * remove guest mac address filter
2970  **/
2971 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2972 {
2973     struct virtchnl_ether_addr_list *al =
2974         (struct virtchnl_ether_addr_list *)msg;
2975     bool was_unimac_deleted = false;
2976     struct i40e_pf *pf = vf->pf;
2977     struct i40e_vsi *vsi = NULL;
2978     i40e_status ret = 0;
2979     int i;
2980
2981     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
2982         !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2983         ret = I40E_ERR_PARAM;
2984         goto error_param;
2985     }
2986
2987     for (i = 0; i < al->num_elements; i++) {
2988         if (is_broadcast_ether_addr(al->list[i].addr) ||
2989             is_zero_ether_addr(al->list[i].addr)) {
2990             dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
2991                 al->list[i].addr, vf->vf_id);
2992             ret = I40E_ERR_INVALID_MAC_ADDR;
2993             goto error_param;
2994         }
2995         if (ether_addr_equal(al->list[i].addr, vf->default_lan_addr.addr))
2996             was_unimac_deleted = true;
2997     }
2998     vsi = pf->vsi[vf->lan_vsi_idx];
2999
3000     spin_lock_bh(&vsi->mac_filter_hash_lock);
3001     /* delete addresses from the list */
3002     for (i = 0; i < al->num_elements; i++)
3003         if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
3004             ret = I40E_ERR_INVALID_MAC_ADDR;
3005             spin_unlock_bh(&vsi->mac_filter_hash_lock);
3006             goto error_param;
3007         }
3008
3009     spin_unlock_bh(&vsi->mac_filter_hash_lock);
3010
3011     /* program the updated filter list */
3012     ret = i40e_sync_vsi_filters(vsi);
3013     if (ret)
3014         dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
3015             vf->vf_id, ret);
3016
3017     if (vf->trusted && was_unimac_deleted) {
3018         struct i40e_mac_filter *f;
3019         struct hlist_node *h;
3020         u8 *macaddr = NULL;
3021         int bkt;
3022
3023         /* set last unicast mac address as default */
3024         spin_lock_bh(&vsi->mac_filter_hash_lock);
3025         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3026             if (is_valid_ether_addr(f->macaddr))
3027                 macaddr = f->macaddr;
3028         }
3029         if (macaddr)
3030             ether_addr_copy(vf->default_lan_addr.addr, macaddr);
3031         spin_unlock_bh(&vsi->mac_filter_hash_lock);
3032     }
3033 error_param:
3034     /* send the response to the VF */
3035     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
3036 }
3037
3038 /**
3039  * i40e_vc_add_vlan_msg
3040  * @vf: pointer to the VF info
3041  * @msg: pointer to the msg buffer
3042  *
3043  * program guest vlan id
3044  **/
3045 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
3046 {
3047     struct virtchnl_vlan_filter_list *vfl =
3048         (struct virtchnl_vlan_filter_list *)msg;
3049     struct i40e_pf *pf = vf->pf;
3050     struct i40e_vsi *vsi = NULL;
3051     i40e_status aq_ret = 0;
3052     int i;
3053
3054     if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
3055         !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3056         dev_err(&pf->pdev->dev,
3057             "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
3058         goto error_param;
3059     }
3060     if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3061         !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3062         aq_ret = I40E_ERR_PARAM;
3063         goto error_param;
3064     }
3065
3066     for (i = 0; i < vfl->num_elements; i++) {
3067         if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3068             aq_ret = I40E_ERR_PARAM;
3069             dev_err(&pf->pdev->dev,
3070                 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3071             goto error_param;
3072         }
3073     }
3074     vsi = pf->vsi[vf->lan_vsi_idx];
3075     if (vsi->info.pvid) {
3076         aq_ret = I40E_ERR_PARAM;
3077         goto error_param;
3078     }
3079
3080     i40e_vlan_stripping_enable(vsi);
3081     for (i = 0; i < vfl->num_elements; i++) {
3082         /* add new VLAN filter */
3083         int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
3084         if (!ret)
3085             vf->num_vlan++;
3086
3087         if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3088             i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3089                                true,
3090                                vfl->vlan_id[i],
3091                                NULL);
3092         if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3093             i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3094                                true,
3095                                vfl->vlan_id[i],
3096                                NULL);
3097
3098         if (ret)
3099             dev_err(&pf->pdev->dev,
3100                 "Unable to add VLAN filter %d for VF %d, error %d\n",
3101                 vfl->vlan_id[i], vf->vf_id, ret);
3102     }
3103
3104 error_param:
3105     /* send the response to the VF */
3106     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
3107 }
3108
3109 /**
3110  * i40e_vc_remove_vlan_msg
3111  * @vf: pointer to the VF info
3112  * @msg: pointer to the msg buffer
3113  *
3114  * remove programmed guest vlan id
3115  **/
3116 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3117 {
3118     struct virtchnl_vlan_filter_list *vfl =
3119         (struct virtchnl_vlan_filter_list *)msg;
3120     struct i40e_pf *pf = vf->pf;
3121     struct i40e_vsi *vsi = NULL;
3122     i40e_status aq_ret = 0;
3123     int i;
3124
3125     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3126         !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3127         aq_ret = I40E_ERR_PARAM;
3128         goto error_param;
3129     }
3130
3131     for (i = 0; i < vfl->num_elements; i++) {
3132         if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3133             aq_ret = I40E_ERR_PARAM;
3134             goto error_param;
3135         }
3136     }
3137
3138     vsi = pf->vsi[vf->lan_vsi_idx];
3139     if (vsi->info.pvid) {
3140         if (vfl->num_elements > 1 || vfl->vlan_id[0])
3141             aq_ret = I40E_ERR_PARAM;
3142         goto error_param;
3143     }
3144
3145     for (i = 0; i < vfl->num_elements; i++) {
3146         i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
3147         vf->num_vlan--;
3148
3149         if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3150             i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3151                                false,
3152                                vfl->vlan_id[i],
3153                                NULL);
3154         if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3155             i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3156                                false,
3157                                vfl->vlan_id[i],
3158                                NULL);
3159     }
3160
3161 error_param:
3162     /* send the response to the VF */
3163     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
3164 }
3165
3166 /**
3167  * i40e_vc_iwarp_msg
3168  * @vf: pointer to the VF info
3169  * @msg: pointer to the msg buffer
3170  * @msglen: msg length
3171  *
3172  * called from the VF for the iwarp msgs
3173  **/
3174 static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3175 {
3176     struct i40e_pf *pf = vf->pf;
3177     int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3178     i40e_status aq_ret = 0;
3179
3180     if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3181         !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
3182         aq_ret = I40E_ERR_PARAM;
3183         goto error_param;
3184     }
3185
3186     i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
3187                      msg, msglen);
3188
3189 error_param:
3190     /* send the response to the VF */
3191     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_IWARP,
3192                        aq_ret);
3193 }
3194
3195 /**
3196  * i40e_vc_iwarp_qvmap_msg
3197  * @vf: pointer to the VF info
3198  * @msg: pointer to the msg buffer
3199  * @config: config qvmap or release it
3200  *
3201  * called from the VF for the iwarp msgs
3202  **/
3203 static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3204 {
3205     struct virtchnl_iwarp_qvlist_info *qvlist_info =
3206                 (struct virtchnl_iwarp_qvlist_info *)msg;
3207     i40e_status aq_ret = 0;
3208
3209     if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3210         !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
3211         aq_ret = I40E_ERR_PARAM;
3212         goto error_param;
3213     }
3214
3215     if (config) {
3216         if (i40e_config_iwarp_qvlist(vf, qvlist_info))
3217             aq_ret = I40E_ERR_PARAM;
3218     } else {
3219         i40e_release_iwarp_qvlist(vf);
3220     }
3221
3222 error_param:
3223     /* send the response to the VF */
3224     return i40e_vc_send_resp_to_vf(vf,
3225                    config ? VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP :
3226                    VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP,
3227                    aq_ret);
3228 }
3229
3230 /**
3231  * i40e_vc_config_rss_key
3232  * @vf: pointer to the VF info
3233  * @msg: pointer to the msg buffer
3234  *
3235  * Configure the VF's RSS key
3236  **/
3237 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3238 {
3239     struct virtchnl_rss_key *vrk =
3240         (struct virtchnl_rss_key *)msg;
3241     struct i40e_pf *pf = vf->pf;
3242     struct i40e_vsi *vsi = NULL;
3243     i40e_status aq_ret = 0;
3244
3245     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3246         !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
3247         vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3248         aq_ret = I40E_ERR_PARAM;
3249         goto err;
3250     }
3251
3252     vsi = pf->vsi[vf->lan_vsi_idx];
3253     aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
3254 err:
3255     /* send the response to the VF */
3256     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
3257                        aq_ret);
3258 }
3259
3260 /**
3261  * i40e_vc_config_rss_lut
3262  * @vf: pointer to the VF info
3263  * @msg: pointer to the msg buffer
3264  *
3265  * Configure the VF's RSS LUT
3266  **/
3267 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3268 {
3269     struct virtchnl_rss_lut *vrl =
3270         (struct virtchnl_rss_lut *)msg;
3271     struct i40e_pf *pf = vf->pf;
3272     struct i40e_vsi *vsi = NULL;
3273     i40e_status aq_ret = 0;
3274     u16 i;
3275
3276     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3277         !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
3278         vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3279         aq_ret = I40E_ERR_PARAM;
3280         goto err;
3281     }
3282
3283     for (i = 0; i < vrl->lut_entries; i++)
3284         if (vrl->lut[i] >= vf->num_queue_pairs) {
3285             aq_ret = I40E_ERR_PARAM;
3286             goto err;
3287         }
3288
3289     vsi = pf->vsi[vf->lan_vsi_idx];
3290     aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3291     /* send the response to the VF */
3292 err:
3293     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
3294                        aq_ret);
3295 }
3296
3297 /**
3298  * i40e_vc_get_rss_hena
3299  * @vf: pointer to the VF info
3300  * @msg: pointer to the msg buffer
3301  *
3302  * Return the RSS HENA bits allowed by the hardware
3303  **/
3304 static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
3305 {
3306     struct virtchnl_rss_hena *vrh = NULL;
3307     struct i40e_pf *pf = vf->pf;
3308     i40e_status aq_ret = 0;
3309     int len = 0;
3310
3311     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3312         aq_ret = I40E_ERR_PARAM;
3313         goto err;
3314     }
3315     len = sizeof(struct virtchnl_rss_hena);
3316
3317     vrh = kzalloc(len, GFP_KERNEL);
3318     if (!vrh) {
3319         aq_ret = I40E_ERR_NO_MEMORY;
3320         len = 0;
3321         goto err;
3322     }
3323     vrh->hena = i40e_pf_get_default_rss_hena(pf);
3324 err:
3325     /* send the response back to the VF */
3326     aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
3327                     aq_ret, (u8 *)vrh, len);
3328     kfree(vrh);
3329     return aq_ret;
3330 }
3331
3332 /**
3333  * i40e_vc_set_rss_hena
3334  * @vf: pointer to the VF info
3335  * @msg: pointer to the msg buffer
3336  *
3337  * Set the RSS HENA bits for the VF
3338  **/
3339 static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
3340 {
3341     struct virtchnl_rss_hena *vrh =
3342         (struct virtchnl_rss_hena *)msg;
3343     struct i40e_pf *pf = vf->pf;
3344     struct i40e_hw *hw = &pf->hw;
3345     i40e_status aq_ret = 0;
3346
3347     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3348         aq_ret = I40E_ERR_PARAM;
3349         goto err;
3350     }
3351     i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
3352     i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3353               (u32)(vrh->hena >> 32));
3354
3355     /* send the response to the VF */
3356 err:
3357     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
3358 }
3359
3360 /**
3361  * i40e_vc_enable_vlan_stripping
3362  * @vf: pointer to the VF info
3363  * @msg: pointer to the msg buffer
3364  *
3365  * Enable vlan header stripping for the VF
3366  **/
3367 static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3368 {
3369     i40e_status aq_ret = 0;
3370     struct i40e_vsi *vsi;
3371
3372     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3373         aq_ret = I40E_ERR_PARAM;
3374         goto err;
3375     }
3376
3377     vsi = vf->pf->vsi[vf->lan_vsi_idx];
3378     i40e_vlan_stripping_enable(vsi);
3379
3380     /* send the response to the VF */
3381 err:
3382     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3383                        aq_ret);
3384 }
3385
3386 /**
3387  * i40e_vc_disable_vlan_stripping
3388  * @vf: pointer to the VF info
3389  * @msg: pointer to the msg buffer
3390  *
3391  * Disable vlan header stripping for the VF
3392  **/
3393 static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3394 {
3395     i40e_status aq_ret = 0;
3396     struct i40e_vsi *vsi;
3397
3398     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3399         aq_ret = I40E_ERR_PARAM;
3400         goto err;
3401     }
3402
3403     vsi = vf->pf->vsi[vf->lan_vsi_idx];
3404     i40e_vlan_stripping_disable(vsi);
3405
3406     /* send the response to the VF */
3407 err:
3408     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3409                        aq_ret);
3410 }
3411
3412 /**
3413  * i40e_validate_cloud_filter
3414  * @vf: pointer to VF structure
3415  * @tc_filter: pointer to filter requested
3416  *
3417  * This function validates cloud filter programmed as TC filter for ADq
3418  **/
3419 static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3420                       struct virtchnl_filter *tc_filter)
3421 {
3422     struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3423     struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3424     struct i40e_pf *pf = vf->pf;
3425     struct i40e_vsi *vsi = NULL;
3426     struct i40e_mac_filter *f;
3427     struct hlist_node *h;
3428     bool found = false;
3429     int bkt;
3430
3431     if (!tc_filter->action) {
3432         dev_info(&pf->pdev->dev,
3433              "VF %d: Currently ADq doesn't support Drop Action\n",
3434              vf->vf_id);
3435         goto err;
3436     }
3437
3438     /* action_meta is TC number here to which the filter is applied */
3439     if (!tc_filter->action_meta ||
3440         tc_filter->action_meta > I40E_MAX_VF_VSI) {
3441         dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3442              vf->vf_id, tc_filter->action_meta);
3443         goto err;
3444     }
3445
3446     /* Check filter if it's programmed for advanced mode or basic mode.
3447      * There are two ADq modes (for VF only),
3448      * 1. Basic mode: intended to allow as many filter options as possible
3449      *        to be added to a VF in Non-trusted mode. Main goal is
3450      *        to add filters to its own MAC and VLAN id.
3451      * 2. Advanced mode: is for allowing filters to be applied other than
3452      *        its own MAC or VLAN. This mode requires the VF to be
3453      *        Trusted.
3454      */
3455     if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3456         vsi = pf->vsi[vf->lan_vsi_idx];
3457         f = i40e_find_mac(vsi, data.dst_mac);
3458
3459         if (!f) {
3460             dev_info(&pf->pdev->dev,
3461                  "Destination MAC %pM doesn't belong to VF %d\n",
3462                  data.dst_mac, vf->vf_id);
3463             goto err;
3464         }
3465
3466         if (mask.vlan_id) {
3467             hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3468                        hlist) {
3469                 if (f->vlan == ntohs(data.vlan_id)) {
3470                     found = true;
3471                     break;
3472                 }
3473             }
3474             if (!found) {
3475                 dev_info(&pf->pdev->dev,
3476                      "VF %d doesn't have any VLAN id %u\n",
3477                      vf->vf_id, ntohs(data.vlan_id));
3478                 goto err;
3479             }
3480         }
3481     } else {
3482         /* Check if VF is trusted */
3483         if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3484             dev_err(&pf->pdev->dev,
3485                 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3486                 vf->vf_id);
3487             return I40E_ERR_CONFIG;
3488         }
3489     }
3490
3491     if (mask.dst_mac[0] & data.dst_mac[0]) {
3492         if (is_broadcast_ether_addr(data.dst_mac) ||
3493             is_zero_ether_addr(data.dst_mac)) {
3494             dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3495                  vf->vf_id, data.dst_mac);
3496             goto err;
3497         }
3498     }
3499
3500     if (mask.src_mac[0] & data.src_mac[0]) {
3501         if (is_broadcast_ether_addr(data.src_mac) ||
3502             is_zero_ether_addr(data.src_mac)) {
3503             dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3504                  vf->vf_id, data.src_mac);
3505             goto err;
3506         }
3507     }
3508
3509     if (mask.dst_port & data.dst_port) {
3510         if (!data.dst_port) {
3511             dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3512                  vf->vf_id);
3513             goto err;
3514         }
3515     }
3516
3517     if (mask.src_port & data.src_port) {
3518         if (!data.src_port) {
3519             dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3520                  vf->vf_id);
3521             goto err;
3522         }
3523     }
3524
3525     if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3526         tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3527         dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3528              vf->vf_id);
3529         goto err;
3530     }
3531
3532     if (mask.vlan_id & data.vlan_id) {
3533         if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3534             dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3535                  vf->vf_id);
3536             goto err;
3537         }
3538     }
3539
3540     return I40E_SUCCESS;
3541 err:
3542     return I40E_ERR_CONFIG;
3543 }
3544
3545 /**
3546  * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3547  * @vf: pointer to the VF info
3548  * @seid: seid of the vsi it is searching for
3549  **/
3550 static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3551 {
3552     struct i40e_pf *pf = vf->pf;
3553     struct i40e_vsi *vsi = NULL;
3554     int i;
3555
3556     for (i = 0; i < vf->num_tc ; i++) {
3557         vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3558         if (vsi && vsi->seid == seid)
3559             return vsi;
3560     }
3561     return NULL;
3562 }
3563
3564 /**
3565  * i40e_del_all_cloud_filters
3566  * @vf: pointer to the VF info
3567  *
3568  * This function deletes all cloud filters
3569  **/
3570 static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3571 {
3572     struct i40e_cloud_filter *cfilter = NULL;
3573     struct i40e_pf *pf = vf->pf;
3574     struct i40e_vsi *vsi = NULL;
3575     struct hlist_node *node;
3576     int ret;
3577
3578     hlist_for_each_entry_safe(cfilter, node,
3579                   &vf->cloud_filter_list, cloud_node) {
3580         vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3581
3582         if (!vsi) {
3583             dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3584                 vf->vf_id, cfilter->seid);
3585             continue;
3586         }
3587
3588         if (cfilter->dst_port)
3589             ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3590                                 false);
3591         else
3592             ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3593         if (ret)
3594             dev_err(&pf->pdev->dev,
3595                 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3596                 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3597                 i40e_aq_str(&pf->hw,
3598                         pf->hw.aq.asq_last_status));
3599
3600         hlist_del(&cfilter->cloud_node);
3601         kfree(cfilter);
3602         vf->num_cloud_filters--;
3603     }
3604 }
3605
3606 /**
3607  * i40e_vc_del_cloud_filter
3608  * @vf: pointer to the VF info
3609  * @msg: pointer to the msg buffer
3610  *
3611  * This function deletes a cloud filter programmed as TC filter for ADq
3612  **/
3613 static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3614 {
3615     struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3616     struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3617     struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3618     struct i40e_cloud_filter cfilter, *cf = NULL;
3619     struct i40e_pf *pf = vf->pf;
3620     struct i40e_vsi *vsi = NULL;
3621     struct hlist_node *node;
3622     i40e_status aq_ret = 0;
3623     int i, ret;
3624
3625     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3626         aq_ret = I40E_ERR_PARAM;
3627         goto err;
3628     }
3629
3630     if (!vf->adq_enabled) {
3631         dev_info(&pf->pdev->dev,
3632              "VF %d: ADq not enabled, can't apply cloud filter\n",
3633              vf->vf_id);
3634         aq_ret = I40E_ERR_PARAM;
3635         goto err;
3636     }
3637
3638     if (i40e_validate_cloud_filter(vf, vcf)) {
3639         dev_info(&pf->pdev->dev,
3640              "VF %d: Invalid input, can't apply cloud filter\n",
3641              vf->vf_id);
3642         aq_ret = I40E_ERR_PARAM;
3643         goto err;
3644     }
3645
3646     memset(&cfilter, 0, sizeof(cfilter));
3647     /* parse destination mac address */
3648     for (i = 0; i < ETH_ALEN; i++)
3649         cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3650
3651     /* parse source mac address */
3652     for (i = 0; i < ETH_ALEN; i++)
3653         cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3654
3655     cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3656     cfilter.dst_port = mask.dst_port & tcf.dst_port;
3657     cfilter.src_port = mask.src_port & tcf.src_port;
3658
3659     switch (vcf->flow_type) {
3660     case VIRTCHNL_TCP_V4_FLOW:
3661         cfilter.n_proto = ETH_P_IP;
3662         if (mask.dst_ip[0] & tcf.dst_ip[0])
3663             memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3664                    ARRAY_SIZE(tcf.dst_ip));
3665         else if (mask.src_ip[0] & tcf.dst_ip[0])
3666             memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3667                    ARRAY_SIZE(tcf.dst_ip));
3668         break;
3669     case VIRTCHNL_TCP_V6_FLOW:
3670         cfilter.n_proto = ETH_P_IPV6;
3671         if (mask.dst_ip[3] & tcf.dst_ip[3])
3672             memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3673                    sizeof(cfilter.ip.v6.dst_ip6));
3674         if (mask.src_ip[3] & tcf.src_ip[3])
3675             memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3676                    sizeof(cfilter.ip.v6.src_ip6));
3677         break;
3678     default:
3679         /* TC filter can be configured based on different combinations
3680          * and in this case IP is not a part of filter config
3681          */
3682         dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3683              vf->vf_id);
3684     }
3685
3686     /* get the vsi to which the tc belongs to */
3687     vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3688     cfilter.seid = vsi->seid;
3689     cfilter.flags = vcf->field_flags;
3690
3691     /* Deleting TC filter */
3692     if (tcf.dst_port)
3693         ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3694     else
3695         ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3696     if (ret) {
3697         dev_err(&pf->pdev->dev,
3698             "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3699             vf->vf_id, i40e_stat_str(&pf->hw, ret),
3700             i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3701         goto err;
3702     }
3703
3704     hlist_for_each_entry_safe(cf, node,
3705                   &vf->cloud_filter_list, cloud_node) {
3706         if (cf->seid != cfilter.seid)
3707             continue;
3708         if (mask.dst_port)
3709             if (cfilter.dst_port != cf->dst_port)
3710                 continue;
3711         if (mask.dst_mac[0])
3712             if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3713                 continue;
3714         /* for ipv4 data to be valid, only first byte of mask is set */
3715         if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3716             if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3717                    ARRAY_SIZE(tcf.dst_ip)))
3718                 continue;
3719         /* for ipv6, mask is set for all sixteen bytes (4 words) */
3720         if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3721             if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3722                    sizeof(cfilter.ip.v6.src_ip6)))
3723                 continue;
3724         if (mask.vlan_id)
3725             if (cfilter.vlan_id != cf->vlan_id)
3726                 continue;
3727
3728         hlist_del(&cf->cloud_node);
3729         kfree(cf);
3730         vf->num_cloud_filters--;
3731     }
3732
3733 err:
3734     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3735                        aq_ret);
3736 }
3737
3738 /**
3739  * i40e_vc_add_cloud_filter
3740  * @vf: pointer to the VF info
3741  * @msg: pointer to the msg buffer
3742  *
3743  * This function adds a cloud filter programmed as TC filter for ADq
3744  **/
3745 static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3746 {
3747     struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3748     struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3749     struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3750     struct i40e_cloud_filter *cfilter = NULL;
3751     struct i40e_pf *pf = vf->pf;
3752     struct i40e_vsi *vsi = NULL;
3753     i40e_status aq_ret = 0;
3754     int i, ret;
3755
3756     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3757         aq_ret = I40E_ERR_PARAM;
3758         goto err_out;
3759     }
3760
3761     if (!vf->adq_enabled) {
3762         dev_info(&pf->pdev->dev,
3763              "VF %d: ADq is not enabled, can't apply cloud filter\n",
3764              vf->vf_id);
3765         aq_ret = I40E_ERR_PARAM;
3766         goto err_out;
3767     }
3768
3769     if (i40e_validate_cloud_filter(vf, vcf)) {
3770         dev_info(&pf->pdev->dev,
3771              "VF %d: Invalid input/s, can't apply cloud filter\n",
3772              vf->vf_id);
3773         aq_ret = I40E_ERR_PARAM;
3774         goto err_out;
3775     }
3776
3777     cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3778     if (!cfilter)
3779         return -ENOMEM;
3780
3781     /* parse destination mac address */
3782     for (i = 0; i < ETH_ALEN; i++)
3783         cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3784
3785     /* parse source mac address */
3786     for (i = 0; i < ETH_ALEN; i++)
3787         cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3788
3789     cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3790     cfilter->dst_port = mask.dst_port & tcf.dst_port;
3791     cfilter->src_port = mask.src_port & tcf.src_port;
3792
3793     switch (vcf->flow_type) {
3794     case VIRTCHNL_TCP_V4_FLOW:
3795         cfilter->n_proto = ETH_P_IP;
3796         if (mask.dst_ip[0] & tcf.dst_ip[0])
3797             memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3798                    ARRAY_SIZE(tcf.dst_ip));
3799         else if (mask.src_ip[0] & tcf.dst_ip[0])
3800             memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3801                    ARRAY_SIZE(tcf.dst_ip));
3802         break;
3803     case VIRTCHNL_TCP_V6_FLOW:
3804         cfilter->n_proto = ETH_P_IPV6;
3805         if (mask.dst_ip[3] & tcf.dst_ip[3])
3806             memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3807                    sizeof(cfilter->ip.v6.dst_ip6));
3808         if (mask.src_ip[3] & tcf.src_ip[3])
3809             memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3810                    sizeof(cfilter->ip.v6.src_ip6));
3811         break;
3812     default:
3813         /* TC filter can be configured based on different combinations
3814          * and in this case IP is not a part of filter config
3815          */
3816         dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3817              vf->vf_id);
3818     }
3819
3820     /* get the VSI to which the TC belongs to */
3821     vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3822     cfilter->seid = vsi->seid;
3823     cfilter->flags = vcf->field_flags;
3824
3825     /* Adding cloud filter programmed as TC filter */
3826     if (tcf.dst_port)
3827         ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3828     else
3829         ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3830     if (ret) {
3831         dev_err(&pf->pdev->dev,
3832             "VF %d: Failed to add cloud filter, err %s aq_err %s\n",
3833             vf->vf_id, i40e_stat_str(&pf->hw, ret),
3834             i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3835         goto err_free;
3836     }
3837
3838     INIT_HLIST_NODE(&cfilter->cloud_node);
3839     hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3840     /* release the pointer passing it to the collection */
3841     cfilter = NULL;
3842     vf->num_cloud_filters++;
3843 err_free:
3844     kfree(cfilter);
3845 err_out:
3846     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
3847                        aq_ret);
3848 }
3849
3850 /**
3851  * i40e_vc_add_qch_msg: Add queue channel and enable ADq
3852  * @vf: pointer to the VF info
3853  * @msg: pointer to the msg buffer
3854  **/
3855 static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
3856 {
3857     struct virtchnl_tc_info *tci =
3858         (struct virtchnl_tc_info *)msg;
3859     struct i40e_pf *pf = vf->pf;
3860     struct i40e_link_status *ls = &pf->hw.phy.link_info;
3861     int i, adq_request_qps = 0;
3862     i40e_status aq_ret = 0;
3863     u64 speed = 0;
3864
3865     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3866         aq_ret = I40E_ERR_PARAM;
3867         goto err;
3868     }
3869
3870     /* ADq cannot be applied if spoof check is ON */
3871     if (vf->spoofchk) {
3872         dev_err(&pf->pdev->dev,
3873             "Spoof check is ON, turn it OFF to enable ADq\n");
3874         aq_ret = I40E_ERR_PARAM;
3875         goto err;
3876     }
3877
3878     if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
3879         dev_err(&pf->pdev->dev,
3880             "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
3881             vf->vf_id);
3882         aq_ret = I40E_ERR_PARAM;
3883         goto err;
3884     }
3885
3886     /* max number of traffic classes for VF currently capped at 4 */
3887     if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
3888         dev_err(&pf->pdev->dev,
3889             "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
3890             vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
3891         aq_ret = I40E_ERR_PARAM;
3892         goto err;
3893     }
3894
3895     /* validate queues for each TC */
3896     for (i = 0; i < tci->num_tc; i++)
3897         if (!tci->list[i].count ||
3898             tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
3899             dev_err(&pf->pdev->dev,
3900                 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
3901                 vf->vf_id, i, tci->list[i].count,
3902                 I40E_DEFAULT_QUEUES_PER_VF);
3903             aq_ret = I40E_ERR_PARAM;
3904             goto err;
3905         }
3906
3907     /* need Max VF queues but already have default number of queues */
3908     adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
3909
3910     if (pf->queues_left < adq_request_qps) {
3911         dev_err(&pf->pdev->dev,
3912             "No queues left to allocate to VF %d\n",
3913             vf->vf_id);
3914         aq_ret = I40E_ERR_PARAM;
3915         goto err;
3916     } else {
3917         /* we need to allocate max VF queues to enable ADq so as to
3918          * make sure ADq enabled VF always gets back queues when it
3919          * goes through a reset.
3920          */
3921         vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
3922     }
3923
3924     /* get link speed in MB to validate rate limit */
3925     speed = i40e_vc_link_speed2mbps(ls->link_speed);
3926     if (speed == SPEED_UNKNOWN) {
3927         dev_err(&pf->pdev->dev,
3928             "Cannot detect link speed\n");
3929         aq_ret = I40E_ERR_PARAM;
3930         goto err;
3931     }
3932
3933     /* parse data from the queue channel info */
3934     vf->num_tc = tci->num_tc;
3935     for (i = 0; i < vf->num_tc; i++) {
3936         if (tci->list[i].max_tx_rate) {
3937             if (tci->list[i].max_tx_rate > speed) {
3938                 dev_err(&pf->pdev->dev,
3939                     "Invalid max tx rate %llu specified for VF %d.",
3940                     tci->list[i].max_tx_rate,
3941                     vf->vf_id);
3942                 aq_ret = I40E_ERR_PARAM;
3943                 goto err;
3944             } else {
3945                 vf->ch[i].max_tx_rate =
3946                     tci->list[i].max_tx_rate;
3947             }
3948         }
3949         vf->ch[i].num_qps = tci->list[i].count;
3950     }
3951
3952     /* set this flag only after making sure all inputs are sane */
3953     vf->adq_enabled = true;
3954
3955     /* reset the VF in order to allocate resources */
3956     i40e_vc_reset_vf(vf, true);
3957
3958     return I40E_SUCCESS;
3959
3960     /* send the response to the VF */
3961 err:
3962     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
3963                        aq_ret);
3964 }
3965
3966 /**
3967  * i40e_vc_del_qch_msg
3968  * @vf: pointer to the VF info
3969  * @msg: pointer to the msg buffer
3970  **/
3971 static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
3972 {
3973     struct i40e_pf *pf = vf->pf;
3974     i40e_status aq_ret = 0;
3975
3976     if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3977         aq_ret = I40E_ERR_PARAM;
3978         goto err;
3979     }
3980
3981     if (vf->adq_enabled) {
3982         i40e_del_all_cloud_filters(vf);
3983         i40e_del_qch(vf);
3984         vf->adq_enabled = false;
3985         vf->num_tc = 0;
3986         dev_info(&pf->pdev->dev,
3987              "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
3988              vf->vf_id);
3989     } else {
3990         dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
3991              vf->vf_id);
3992         aq_ret = I40E_ERR_PARAM;
3993     }
3994
3995     /* reset the VF in order to allocate resources */
3996     i40e_vc_reset_vf(vf, true);
3997
3998     return I40E_SUCCESS;
3999
4000 err:
4001     return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
4002                        aq_ret);
4003 }
4004
4005 /**
4006  * i40e_vc_process_vf_msg
4007  * @pf: pointer to the PF structure
4008  * @vf_id: source VF id
4009  * @v_opcode: operation code
4010  * @v_retval: unused return value code
4011  * @msg: pointer to the msg buffer
4012  * @msglen: msg length
4013  *
4014  * called from the common aeq/arq handler to
4015  * process request from VF
4016  **/
4017 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
4018                u32 __always_unused v_retval, u8 *msg, u16 msglen)
4019 {
4020     struct i40e_hw *hw = &pf->hw;
4021     int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
4022     struct i40e_vf *vf;
4023     int ret;
4024
4025     pf->vf_aq_requests++;
4026     if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
4027         return -EINVAL;
4028     vf = &(pf->vf[local_vf_id]);
4029
4030     /* Check if VF is disabled. */
4031     if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
4032         return I40E_ERR_PARAM;
4033
4034     /* perform basic checks on the msg */
4035     ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
4036
4037     if (ret) {
4038         i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
4039         dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
4040             local_vf_id, v_opcode, msglen);
4041         switch (ret) {
4042         case VIRTCHNL_STATUS_ERR_PARAM:
4043             return -EPERM;
4044         default:
4045             return -EINVAL;
4046         }
4047     }
4048
4049     switch (v_opcode) {
4050     case VIRTCHNL_OP_VERSION:
4051         ret = i40e_vc_get_version_msg(vf, msg);
4052         break;
4053     case VIRTCHNL_OP_GET_VF_RESOURCES:
4054         ret = i40e_vc_get_vf_resources_msg(vf, msg);
4055         i40e_vc_notify_vf_link_state(vf);
4056         break;
4057     case VIRTCHNL_OP_RESET_VF:
4058         i40e_vc_reset_vf(vf, false);
4059         ret = 0;
4060         break;
4061     case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4062         ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4063         break;
4064     case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4065         ret = i40e_vc_config_queues_msg(vf, msg);
4066         break;
4067     case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4068         ret = i40e_vc_config_irq_map_msg(vf, msg);
4069         break;
4070     case VIRTCHNL_OP_ENABLE_QUEUES:
4071         ret = i40e_vc_enable_queues_msg(vf, msg);
4072         i40e_vc_notify_vf_link_state(vf);
4073         break;
4074     case VIRTCHNL_OP_DISABLE_QUEUES:
4075         ret = i40e_vc_disable_queues_msg(vf, msg);
4076         break;
4077     case VIRTCHNL_OP_ADD_ETH_ADDR:
4078         ret = i40e_vc_add_mac_addr_msg(vf, msg);
4079         break;
4080     case VIRTCHNL_OP_DEL_ETH_ADDR:
4081         ret = i40e_vc_del_mac_addr_msg(vf, msg);
4082         break;
4083     case VIRTCHNL_OP_ADD_VLAN:
4084         ret = i40e_vc_add_vlan_msg(vf, msg);
4085         break;
4086     case VIRTCHNL_OP_DEL_VLAN:
4087         ret = i40e_vc_remove_vlan_msg(vf, msg);
4088         break;
4089     case VIRTCHNL_OP_GET_STATS:
4090         ret = i40e_vc_get_stats_msg(vf, msg);
4091         break;
4092     case VIRTCHNL_OP_IWARP:
4093         ret = i40e_vc_iwarp_msg(vf, msg, msglen);
4094         break;
4095     case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
4096         ret = i40e_vc_iwarp_qvmap_msg(vf, msg, true);
4097         break;
4098     case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
4099         ret = i40e_vc_iwarp_qvmap_msg(vf, msg, false);
4100         break;
4101     case VIRTCHNL_OP_CONFIG_RSS_KEY:
4102         ret = i40e_vc_config_rss_key(vf, msg);
4103         break;
4104     case VIRTCHNL_OP_CONFIG_RSS_LUT:
4105         ret = i40e_vc_config_rss_lut(vf, msg);
4106         break;
4107     case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
4108         ret = i40e_vc_get_rss_hena(vf, msg);
4109         break;
4110     case VIRTCHNL_OP_SET_RSS_HENA:
4111         ret = i40e_vc_set_rss_hena(vf, msg);
4112         break;
4113     case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4114         ret = i40e_vc_enable_vlan_stripping(vf, msg);
4115         break;
4116     case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4117         ret = i40e_vc_disable_vlan_stripping(vf, msg);
4118         break;
4119     case VIRTCHNL_OP_REQUEST_QUEUES:
4120         ret = i40e_vc_request_queues_msg(vf, msg);
4121         break;
4122     case VIRTCHNL_OP_ENABLE_CHANNELS:
4123         ret = i40e_vc_add_qch_msg(vf, msg);
4124         break;
4125     case VIRTCHNL_OP_DISABLE_CHANNELS:
4126         ret = i40e_vc_del_qch_msg(vf, msg);
4127         break;
4128     case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4129         ret = i40e_vc_add_cloud_filter(vf, msg);
4130         break;
4131     case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4132         ret = i40e_vc_del_cloud_filter(vf, msg);
4133         break;
4134     case VIRTCHNL_OP_UNKNOWN:
4135     default:
4136         dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4137             v_opcode, local_vf_id);
4138         ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
4139                           I40E_ERR_NOT_IMPLEMENTED);
4140         break;
4141     }
4142
4143     return ret;
4144 }
4145
4146 /**
4147  * i40e_vc_process_vflr_event
4148  * @pf: pointer to the PF structure
4149  *
4150  * called from the vlfr irq handler to
4151  * free up VF resources and state variables
4152  **/
4153 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4154 {
4155     struct i40e_hw *hw = &pf->hw;
4156     u32 reg, reg_idx, bit_idx;
4157     struct i40e_vf *vf;
4158     int vf_id;
4159
4160     if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4161         return 0;
4162
4163     /* Re-enable the VFLR interrupt cause here, before looking for which
4164      * VF got reset. Otherwise, if another VF gets a reset while the
4165      * first one is being processed, that interrupt will be lost, and
4166      * that VF will be stuck in reset forever.
4167      */
4168     reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4169     reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4170     wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4171     i40e_flush(hw);
4172
4173     clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4174     for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4175         reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4176         bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4177         /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4178         vf = &pf->vf[vf_id];
4179         reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4180         if (reg & BIT(bit_idx))
4181             /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4182             i40e_reset_vf(vf, true);
4183     }
4184
4185     return 0;
4186 }
4187
4188 /**
4189  * i40e_validate_vf
4190  * @pf: the physical function
4191  * @vf_id: VF identifier
4192  *
4193  * Check that the VF is enabled and the VSI exists.
4194  *
4195  * Returns 0 on success, negative on failure
4196  **/
4197 static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4198 {
4199     struct i40e_vsi *vsi;
4200     struct i40e_vf *vf;
4201     int ret = 0;
4202
4203     if (vf_id >= pf->num_alloc_vfs) {
4204         dev_err(&pf->pdev->dev,
4205             "Invalid VF Identifier %d\n", vf_id);
4206         ret = -EINVAL;
4207         goto err_out;
4208     }
4209     vf = &pf->vf[vf_id];
4210     vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
4211     if (!vsi)
4212         ret = -EINVAL;
4213 err_out:
4214     return ret;
4215 }
4216
4217 /**
4218  * i40e_ndo_set_vf_mac
4219  * @netdev: network interface device structure
4220  * @vf_id: VF identifier
4221  * @mac: mac address
4222  *
4223  * program VF mac address
4224  **/
4225 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4226 {
4227     struct i40e_netdev_priv *np = netdev_priv(netdev);
4228     struct i40e_vsi *vsi = np->vsi;
4229     struct i40e_pf *pf = vsi->back;
4230     struct i40e_mac_filter *f;
4231     struct i40e_vf *vf;
4232     int ret = 0;
4233     struct hlist_node *h;
4234     int bkt;
4235     u8 i;
4236
4237     if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4238         dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4239         return -EAGAIN;
4240     }
4241
4242     /* validate the request */
4243     ret = i40e_validate_vf(pf, vf_id);
4244     if (ret)
4245         goto error_param;
4246
4247     vf = &pf->vf[vf_id];
4248
4249     /* When the VF is resetting wait until it is done.
4250      * It can take up to 200 milliseconds,
4251      * but wait for up to 300 milliseconds to be safe.
4252      * Acquire the VSI pointer only after the VF has been
4253      * properly initialized.
4254      */
4255     for (i = 0; i < 15; i++) {
4256         if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4257             break;
4258         msleep(20);
4259     }
4260     if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4261         dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4262             vf_id);
4263         ret = -EAGAIN;
4264         goto error_param;
4265     }
4266     vsi = pf->vsi[vf->lan_vsi_idx];
4267
4268     if (is_multicast_ether_addr(mac)) {
4269         dev_err(&pf->pdev->dev,
4270             "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4271         ret = -EINVAL;
4272         goto error_param;
4273     }
4274
4275     /* Lock once because below invoked function add/del_filter requires
4276      * mac_filter_hash_lock to be held
4277      */
4278     spin_lock_bh(&vsi->mac_filter_hash_lock);
4279
4280     /* delete the temporary mac address */
4281     if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4282         i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4283
4284     /* Delete all the filters for this VSI - we're going to kill it
4285      * anyway.
4286      */
4287     hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4288         __i40e_del_filter(vsi, f);
4289
4290     spin_unlock_bh(&vsi->mac_filter_hash_lock);
4291
4292     /* program mac filter */
4293     if (i40e_sync_vsi_filters(vsi)) {
4294         dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4295         ret = -EIO;
4296         goto error_param;
4297     }
4298     ether_addr_copy(vf->default_lan_addr.addr, mac);
4299
4300     if (is_zero_ether_addr(mac)) {
4301         vf->pf_set_mac = false;
4302         dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4303     } else {
4304         vf->pf_set_mac = true;
4305         dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4306              mac, vf_id);
4307     }
4308
4309     /* Force the VF interface down so it has to bring up with new MAC
4310      * address
4311      */
4312     i40e_vc_reset_vf(vf, true);
4313     dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4314
4315 error_param:
4316     clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4317     return ret;
4318 }
4319
4320 /**
4321  * i40e_ndo_set_vf_port_vlan
4322  * @netdev: network interface device structure
4323  * @vf_id: VF identifier
4324  * @vlan_id: mac address
4325  * @qos: priority setting
4326  * @vlan_proto: vlan protocol
4327  *
4328  * program VF vlan id and/or qos
4329  **/
4330 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4331                   u16 vlan_id, u8 qos, __be16 vlan_proto)
4332 {
4333     u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4334     struct i40e_netdev_priv *np = netdev_priv(netdev);
4335     bool allmulti = false, alluni = false;
4336     struct i40e_pf *pf = np->vsi->back;
4337     struct i40e_vsi *vsi;
4338     struct i40e_vf *vf;
4339     int ret = 0;
4340
4341     if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4342         dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4343         return -EAGAIN;
4344     }
4345
4346     /* validate the request */
4347     ret = i40e_validate_vf(pf, vf_id);
4348     if (ret)
4349         goto error_pvid;
4350
4351     if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4352         dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4353         ret = -EINVAL;
4354         goto error_pvid;
4355     }
4356
4357     if (vlan_proto != htons(ETH_P_8021Q)) {
4358         dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4359         ret = -EPROTONOSUPPORT;
4360         goto error_pvid;
4361     }
4362
4363     vf = &pf->vf[vf_id];
4364     vsi = pf->vsi[vf->lan_vsi_idx];
4365     if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4366         dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4367             vf_id);
4368         ret = -EAGAIN;
4369         goto error_pvid;
4370     }
4371
4372     if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4373         /* duplicate request, so just return success */
4374         goto error_pvid;
4375
4376     i40e_vlan_stripping_enable(vsi);
4377     i40e_vc_reset_vf(vf, true);
4378     /* During reset the VF got a new VSI, so refresh a pointer. */
4379     vsi = pf->vsi[vf->lan_vsi_idx];
4380     /* Locked once because multiple functions below iterate list */
4381     spin_lock_bh(&vsi->mac_filter_hash_lock);
4382
4383     /* Check for condition where there was already a port VLAN ID
4384      * filter set and now it is being deleted by setting it to zero.
4385      * Additionally check for the condition where there was a port
4386      * VLAN but now there is a new and different port VLAN being set.
4387      * Before deleting all the old VLAN filters we must add new ones
4388      * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4389      * MAC addresses deleted.
4390      */
4391     if ((!(vlan_id || qos) ||
4392          vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4393         vsi->info.pvid) {
4394         ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4395         if (ret) {
4396             dev_info(&vsi->back->pdev->dev,
4397                  "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4398                  vsi->back->hw.aq.asq_last_status);
4399             spin_unlock_bh(&vsi->mac_filter_hash_lock);
4400             goto error_pvid;
4401         }
4402     }
4403
4404     if (vsi->info.pvid) {
4405         /* remove all filters on the old VLAN */
4406         i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4407                        VLAN_VID_MASK));
4408     }
4409
4410     spin_unlock_bh(&vsi->mac_filter_hash_lock);
4411
4412     /* disable promisc modes in case they were enabled */
4413     ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4414                           allmulti, alluni);
4415     if (ret) {
4416         dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4417         goto error_pvid;
4418     }
4419
4420     if (vlan_id || qos)
4421         ret = i40e_vsi_add_pvid(vsi, vlanprio);
4422     else
4423         i40e_vsi_remove_pvid(vsi);
4424     spin_lock_bh(&vsi->mac_filter_hash_lock);
4425
4426     if (vlan_id) {
4427         dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4428              vlan_id, qos, vf_id);
4429
4430         /* add new VLAN filter for each MAC */
4431         ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4432         if (ret) {
4433             dev_info(&vsi->back->pdev->dev,
4434                  "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4435                  vsi->back->hw.aq.asq_last_status);
4436             spin_unlock_bh(&vsi->mac_filter_hash_lock);
4437             goto error_pvid;
4438         }
4439
4440         /* remove the previously added non-VLAN MAC filters */
4441         i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4442     }
4443
4444     spin_unlock_bh(&vsi->mac_filter_hash_lock);
4445
4446     if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4447         alluni = true;
4448
4449     if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4450         allmulti = true;
4451
4452     /* Schedule the worker thread to take care of applying changes */
4453     i40e_service_event_schedule(vsi->back);
4454
4455     if (ret) {
4456         dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4457         goto error_pvid;
4458     }
4459
4460     /* The Port VLAN needs to be saved across resets the same as the
4461      * default LAN MAC address.
4462      */
4463     vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4464
4465     ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4466     if (ret) {
4467         dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4468         goto error_pvid;
4469     }
4470
4471     ret = 0;
4472
4473 error_pvid:
4474     clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4475     return ret;
4476 }
4477
4478 /**
4479  * i40e_ndo_set_vf_bw
4480  * @netdev: network interface device structure
4481  * @vf_id: VF identifier
4482  * @min_tx_rate: Minimum Tx rate
4483  * @max_tx_rate: Maximum Tx rate
4484  *
4485  * configure VF Tx rate
4486  **/
4487 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4488                int max_tx_rate)
4489 {
4490     struct i40e_netdev_priv *np = netdev_priv(netdev);
4491     struct i40e_pf *pf = np->vsi->back;
4492     struct i40e_vsi *vsi;
4493     struct i40e_vf *vf;
4494     int ret = 0;
4495
4496     if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4497         dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4498         return -EAGAIN;
4499     }
4500
4501     /* validate the request */
4502     ret = i40e_validate_vf(pf, vf_id);
4503     if (ret)
4504         goto error;
4505
4506     if (min_tx_rate) {
4507         dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4508             min_tx_rate, vf_id);
4509         ret = -EINVAL;
4510         goto error;
4511     }
4512
4513     vf = &pf->vf[vf_id];
4514     vsi = pf->vsi[vf->lan_vsi_idx];
4515     if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4516         dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4517             vf_id);
4518         ret = -EAGAIN;
4519         goto error;
4520     }
4521
4522     ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4523     if (ret)
4524         goto error;
4525
4526     vf->tx_rate = max_tx_rate;
4527 error:
4528     clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4529     return ret;
4530 }
4531
4532 /**
4533  * i40e_ndo_get_vf_config
4534  * @netdev: network interface device structure
4535  * @vf_id: VF identifier
4536  * @ivi: VF configuration structure
4537  *
4538  * return VF configuration
4539  **/
4540 int i40e_ndo_get_vf_config(struct net_device *netdev,
4541                int vf_id, struct ifla_vf_info *ivi)
4542 {
4543     struct i40e_netdev_priv *np = netdev_priv(netdev);
4544     struct i40e_vsi *vsi = np->vsi;
4545     struct i40e_pf *pf = vsi->back;
4546     struct i40e_vf *vf;
4547     int ret = 0;
4548
4549     if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4550         dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4551         return -EAGAIN;
4552     }
4553
4554     /* validate the request */
4555     ret = i40e_validate_vf(pf, vf_id);
4556     if (ret)
4557         goto error_param;
4558
4559     vf = &pf->vf[vf_id];
4560     /* first vsi is always the LAN vsi */
4561     vsi = pf->vsi[vf->lan_vsi_idx];
4562     if (!vsi) {
4563         ret = -ENOENT;
4564         goto error_param;
4565     }
4566
4567     ivi->vf = vf_id;
4568
4569     ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4570
4571     ivi->max_tx_rate = vf->tx_rate;
4572     ivi->min_tx_rate = 0;
4573     ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
4574     ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
4575            I40E_VLAN_PRIORITY_SHIFT;
4576     if (vf->link_forced == false)
4577         ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4578     else if (vf->link_up == true)
4579         ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4580     else
4581         ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4582     ivi->spoofchk = vf->spoofchk;
4583     ivi->trusted = vf->trusted;
4584     ret = 0;
4585
4586 error_param:
4587     clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4588     return ret;
4589 }
4590
4591 /**
4592  * i40e_ndo_set_vf_link_state
4593  * @netdev: network interface device structure
4594  * @vf_id: VF identifier
4595  * @link: required link state
4596  *
4597  * Set the link state of a specified VF, regardless of physical link state
4598  **/
4599 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4600 {
4601     struct i40e_netdev_priv *np = netdev_priv(netdev);
4602     struct i40e_pf *pf = np->vsi->back;
4603     struct i40e_link_status *ls = &pf->hw.phy.link_info;
4604     struct virtchnl_pf_event pfe;
4605     struct i40e_hw *hw = &pf->hw;
4606     struct i40e_vf *vf;
4607     int abs_vf_id;
4608     int ret = 0;
4609
4610     if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4611         dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4612         return -EAGAIN;
4613     }
4614
4615     /* validate the request */
4616     if (vf_id >= pf->num_alloc_vfs) {
4617         dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4618         ret = -EINVAL;
4619         goto error_out;
4620     }
4621
4622     vf = &pf->vf[vf_id];
4623     abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4624
4625     pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4626     pfe.severity = PF_EVENT_SEVERITY_INFO;
4627
4628     switch (link) {
4629     case IFLA_VF_LINK_STATE_AUTO:
4630         vf->link_forced = false;
4631         i40e_set_vf_link_state(vf, &pfe, ls);
4632         break;
4633     case IFLA_VF_LINK_STATE_ENABLE:
4634         vf->link_forced = true;
4635         vf->link_up = true;
4636         i40e_set_vf_link_state(vf, &pfe, ls);
4637         break;
4638     case IFLA_VF_LINK_STATE_DISABLE:
4639         vf->link_forced = true;
4640         vf->link_up = false;
4641         i40e_set_vf_link_state(vf, &pfe, ls);
4642         break;
4643     default:
4644         ret = -EINVAL;
4645         goto error_out;
4646     }
4647     /* Notify the VF of its new link state */
4648     i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4649                    0, (u8 *)&pfe, sizeof(pfe), NULL);
4650
4651 error_out:
4652     clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4653     return ret;
4654 }
4655
4656 /**
4657  * i40e_ndo_set_vf_spoofchk
4658  * @netdev: network interface device structure
4659  * @vf_id: VF identifier
4660  * @enable: flag to enable or disable feature
4661  *
4662  * Enable or disable VF spoof checking
4663  **/
4664 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4665 {
4666     struct i40e_netdev_priv *np = netdev_priv(netdev);
4667     struct i40e_vsi *vsi = np->vsi;
4668     struct i40e_pf *pf = vsi->back;
4669     struct i40e_vsi_context ctxt;
4670     struct i40e_hw *hw = &pf->hw;
4671     struct i40e_vf *vf;
4672     int ret = 0;
4673
4674     if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4675         dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4676         return -EAGAIN;
4677     }
4678
4679     /* validate the request */
4680     if (vf_id >= pf->num_alloc_vfs) {
4681         dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4682         ret = -EINVAL;
4683         goto out;
4684     }
4685
4686     vf = &(pf->vf[vf_id]);
4687     if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4688         dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4689             vf_id);
4690         ret = -EAGAIN;
4691         goto out;
4692     }
4693
4694     if (enable == vf->spoofchk)
4695         goto out;
4696
4697     vf->spoofchk = enable;
4698     memset(&ctxt, 0, sizeof(ctxt));
4699     ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4700     ctxt.pf_num = pf->hw.pf_id;
4701     ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4702     if (enable)
4703         ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4704                     I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4705     ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4706     if (ret) {
4707         dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4708             ret);
4709         ret = -EIO;
4710     }
4711 out:
4712     clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4713     return ret;
4714 }
4715
4716 /**
4717  * i40e_ndo_set_vf_trust
4718  * @netdev: network interface device structure of the pf
4719  * @vf_id: VF identifier
4720  * @setting: trust setting
4721  *
4722  * Enable or disable VF trust setting
4723  **/
4724 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4725 {
4726     struct i40e_netdev_priv *np = netdev_priv(netdev);
4727     struct i40e_pf *pf = np->vsi->back;
4728     struct i40e_vf *vf;
4729     int ret = 0;
4730
4731     if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4732         dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4733         return -EAGAIN;
4734     }
4735
4736     /* validate the request */
4737     if (vf_id >= pf->num_alloc_vfs) {
4738         dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4739         ret = -EINVAL;
4740         goto out;
4741     }
4742
4743     if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4744         dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4745         ret = -EINVAL;
4746         goto out;
4747     }
4748
4749     vf = &pf->vf[vf_id];
4750
4751     if (setting == vf->trusted)
4752         goto out;
4753
4754     vf->trusted = setting;
4755
4756     /* request PF to sync mac/vlan filters for the VF */
4757     set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
4758     pf->vsi[vf->lan_vsi_idx]->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
4759
4760     i40e_vc_reset_vf(vf, true);
4761     dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4762          vf_id, setting ? "" : "un");
4763
4764     if (vf->adq_enabled) {
4765         if (!vf->trusted) {
4766             dev_info(&pf->pdev->dev,
4767                  "VF %u no longer Trusted, deleting all cloud filters\n",
4768                  vf_id);
4769             i40e_del_all_cloud_filters(vf);
4770         }
4771     }
4772
4773 out:
4774     clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4775     return ret;
4776 }
4777
4778 /**
4779  * i40e_get_vf_stats - populate some stats for the VF
4780  * @netdev: the netdev of the PF
4781  * @vf_id: the host OS identifier (0-127)
4782  * @vf_stats: pointer to the OS memory to be initialized
4783  */
4784 int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4785               struct ifla_vf_stats *vf_stats)
4786 {
4787     struct i40e_netdev_priv *np = netdev_priv(netdev);
4788     struct i40e_pf *pf = np->vsi->back;
4789     struct i40e_eth_stats *stats;
4790     struct i40e_vsi *vsi;
4791     struct i40e_vf *vf;
4792
4793     /* validate the request */
4794     if (i40e_validate_vf(pf, vf_id))
4795         return -EINVAL;
4796
4797     vf = &pf->vf[vf_id];
4798     if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4799         dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
4800         return -EBUSY;
4801     }
4802
4803     vsi = pf->vsi[vf->lan_vsi_idx];
4804     if (!vsi)
4805         return -EINVAL;
4806
4807     i40e_update_eth_stats(vsi);
4808     stats = &vsi->eth_stats;
4809
4810     memset(vf_stats, 0, sizeof(*vf_stats));
4811
4812     vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
4813         stats->rx_multicast;
4814     vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
4815         stats->tx_multicast;
4816     vf_stats->rx_bytes   = stats->rx_bytes;
4817     vf_stats->tx_bytes   = stats->tx_bytes;
4818     vf_stats->broadcast  = stats->rx_broadcast;
4819     vf_stats->multicast  = stats->rx_multicast;
4820     vf_stats->rx_dropped = stats->rx_discards;
4821     vf_stats->tx_dropped = stats->tx_discards;
4822
4823     return 0;
4824 }