diff options
Diffstat (limited to 'kernel/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c')
| -rw-r--r-- | kernel/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 2402 |
1 files changed, 2402 insertions, 0 deletions
diff --git a/kernel/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/kernel/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c new file mode 100644 index 000000000..4e9376da0 --- /dev/null +++ b/kernel/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c @@ -0,0 +1,2402 @@ +/******************************************************************************* + * + * Intel Ethernet Controller XL710 Family Linux Driver + * Copyright(c) 2013 - 2015 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program. If not, see <http://www.gnu.org/licenses/>. + * + * The full GNU General Public License is included in this distribution in + * the file called "COPYING". + * + * Contact Information: + * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + ******************************************************************************/ + +#include "i40e.h" + +/*********************notification routines***********************/ + +/** + * i40e_vc_vf_broadcast + * @pf: pointer to the PF structure + * @opcode: operation code + * @retval: return value + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * send a message to all VFs on a given PF + **/ +static void i40e_vc_vf_broadcast(struct i40e_pf *pf, + enum i40e_virtchnl_ops v_opcode, + i40e_status v_retval, u8 *msg, + u16 msglen) +{ + struct i40e_hw *hw = &pf->hw; + struct i40e_vf *vf = pf->vf; + int i; + + for (i = 0; i < pf->num_alloc_vfs; i++, vf++) { + int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id; + /* Not all vfs are enabled so skip the ones that are not */ + if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states) && + !test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) + continue; + + /* Ignore return value on purpose - a given VF may fail, but + * we need to keep going and send to all of them + */ + i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval, + msg, msglen, NULL); + } +} + +/** + * i40e_vc_notify_link_state + * @vf: pointer to the VF structure + * + * send a link status message to a single VF + **/ +static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf) +{ + struct i40e_virtchnl_pf_event pfe; + struct i40e_pf *pf = vf->pf; + struct i40e_hw *hw = &pf->hw; + struct i40e_link_status *ls = &pf->hw.phy.link_info; + int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id; + + pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE; + pfe.severity = I40E_PF_EVENT_SEVERITY_INFO; + if (vf->link_forced) { + pfe.event_data.link_event.link_status = vf->link_up; + pfe.event_data.link_event.link_speed = + (vf->link_up ? I40E_LINK_SPEED_40GB : 0); + } else { + pfe.event_data.link_event.link_status = + ls->link_info & I40E_AQ_LINK_UP; + pfe.event_data.link_event.link_speed = ls->link_speed; + } + i40e_aq_send_msg_to_vf(hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT, + 0, (u8 *)&pfe, sizeof(pfe), NULL); +} + +/** + * i40e_vc_notify_link_state + * @pf: pointer to the PF structure + * + * send a link status message to all VFs on a given PF + **/ +void i40e_vc_notify_link_state(struct i40e_pf *pf) +{ + int i; + + for (i = 0; i < pf->num_alloc_vfs; i++) + i40e_vc_notify_vf_link_state(&pf->vf[i]); +} + +/** + * i40e_vc_notify_reset + * @pf: pointer to the PF structure + * + * indicate a pending reset to all VFs on a given PF + **/ +void i40e_vc_notify_reset(struct i40e_pf *pf) +{ + struct i40e_virtchnl_pf_event pfe; + + pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING; + pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM; + i40e_vc_vf_broadcast(pf, I40E_VIRTCHNL_OP_EVENT, 0, + (u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event)); +} + +/** + * i40e_vc_notify_vf_reset + * @vf: pointer to the VF structure + * + * indicate a pending reset to the given VF + **/ +void i40e_vc_notify_vf_reset(struct i40e_vf *vf) +{ + struct i40e_virtchnl_pf_event pfe; + int abs_vf_id; + + /* validate the request */ + if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs) + return; + + /* verify if the VF is in either init or active before proceeding */ + if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states) && + !test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) + return; + + abs_vf_id = vf->vf_id + vf->pf->hw.func_caps.vf_base_id; + + pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING; + pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM; + i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT, + 0, (u8 *)&pfe, + sizeof(struct i40e_virtchnl_pf_event), NULL); +} +/***********************misc routines*****************************/ + +/** + * i40e_vc_disable_vf + * @pf: pointer to the PF info + * @vf: pointer to the VF info + * + * Disable the VF through a SW reset + **/ +static inline void i40e_vc_disable_vf(struct i40e_pf *pf, struct i40e_vf *vf) +{ + struct i40e_hw *hw = &pf->hw; + u32 reg; + + reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id)); + reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK; + wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg); + i40e_flush(hw); +} + +/** + * i40e_vc_isvalid_vsi_id + * @vf: pointer to the VF info + * @vsi_id: VF relative VSI id + * + * check for the valid VSI id + **/ +static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id) +{ + struct i40e_pf *pf = vf->pf; + struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id); + + return (vsi && (vsi->vf_id == vf->vf_id)); +} + +/** + * i40e_vc_isvalid_queue_id + * @vf: pointer to the VF info + * @vsi_id: vsi id + * @qid: vsi relative queue id + * + * check for the valid queue id + **/ +static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id, + u8 qid) +{ + struct i40e_pf *pf = vf->pf; + struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id); + + return (vsi && (qid < vsi->alloc_queue_pairs)); +} + +/** + * i40e_vc_isvalid_vector_id + * @vf: pointer to the VF info + * @vector_id: VF relative vector id + * + * check for the valid vector id + **/ +static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id) +{ + struct i40e_pf *pf = vf->pf; + + return vector_id < pf->hw.func_caps.num_msix_vectors_vf; +} + +/***********************vf resource mgmt routines*****************/ + +/** + * i40e_vc_get_pf_queue_id + * @vf: pointer to the VF info + * @vsi_id: id of VSI as provided by the FW + * @vsi_queue_id: vsi relative queue id + * + * return PF relative queue id + **/ +static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id, + u8 vsi_queue_id) +{ + struct i40e_pf *pf = vf->pf; + struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id); + u16 pf_queue_id = I40E_QUEUE_END_OF_LIST; + + if (!vsi) + return pf_queue_id; + + if (le16_to_cpu(vsi->info.mapping_flags) & + I40E_AQ_VSI_QUE_MAP_NONCONTIG) + pf_queue_id = + le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]); + else + pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) + + vsi_queue_id; + + return pf_queue_id; +} + +/** + * i40e_config_irq_link_list + * @vf: pointer to the VF info + * @vsi_id: id of VSI as given by the FW + * @vecmap: irq map info + * + * configure irq link list from the map + **/ +static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id, + struct i40e_virtchnl_vector_map *vecmap) +{ + unsigned long linklistmap = 0, tempmap; + struct i40e_pf *pf = vf->pf; + struct i40e_hw *hw = &pf->hw; + u16 vsi_queue_id, pf_queue_id; + enum i40e_queue_type qtype; + u16 next_q, vector_id; + u32 reg, reg_idx; + u16 itr_idx = 0; + + vector_id = vecmap->vector_id; + /* setup the head */ + if (0 == vector_id) + reg_idx = I40E_VPINT_LNKLST0(vf->vf_id); + else + reg_idx = I40E_VPINT_LNKLSTN( + ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) + + (vector_id - 1)); + + if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) { + /* Special case - No queues mapped on this vector */ + wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK); + goto irq_list_done; + } + tempmap = vecmap->rxq_map; + for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) { + linklistmap |= (1 << + (I40E_VIRTCHNL_SUPPORTED_QTYPES * + vsi_queue_id)); + } + + tempmap = vecmap->txq_map; + for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) { + linklistmap |= (1 << + (I40E_VIRTCHNL_SUPPORTED_QTYPES * vsi_queue_id + + 1)); + } + + next_q = find_first_bit(&linklistmap, + (I40E_MAX_VSI_QP * + I40E_VIRTCHNL_SUPPORTED_QTYPES)); + vsi_queue_id = next_q/I40E_VIRTCHNL_SUPPORTED_QTYPES; + qtype = next_q%I40E_VIRTCHNL_SUPPORTED_QTYPES; + pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id); + reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id); + + wr32(hw, reg_idx, reg); + + while (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) { + switch (qtype) { + case I40E_QUEUE_TYPE_RX: + reg_idx = I40E_QINT_RQCTL(pf_queue_id); + itr_idx = vecmap->rxitr_idx; + break; + case I40E_QUEUE_TYPE_TX: + reg_idx = I40E_QINT_TQCTL(pf_queue_id); + itr_idx = vecmap->txitr_idx; + break; + default: + break; + } + + next_q = find_next_bit(&linklistmap, + (I40E_MAX_VSI_QP * + I40E_VIRTCHNL_SUPPORTED_QTYPES), + next_q + 1); + if (next_q < + (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) { + vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES; + qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES; + pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, + vsi_queue_id); + } else { + pf_queue_id = I40E_QUEUE_END_OF_LIST; + qtype = 0; + } + + /* format for the RQCTL & TQCTL regs is same */ + reg = (vector_id) | + (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) | + (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) | + (1 << I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) | + (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT); + wr32(hw, reg_idx, reg); + } + +irq_list_done: + i40e_flush(hw); +} + +/** + * i40e_config_vsi_tx_queue + * @vf: pointer to the VF info + * @vsi_id: id of VSI as provided by the FW + * @vsi_queue_id: vsi relative queue index + * @info: config. info + * + * configure tx queue + **/ +static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id, + u16 vsi_queue_id, + struct i40e_virtchnl_txq_info *info) +{ + struct i40e_pf *pf = vf->pf; + struct i40e_hw *hw = &pf->hw; + struct i40e_hmc_obj_txq tx_ctx; + struct i40e_vsi *vsi; + u16 pf_queue_id; + u32 qtx_ctl; + int ret = 0; + + pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id); + vsi = i40e_find_vsi_from_id(pf, vsi_id); + + /* clear the context structure first */ + memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq)); + + /* only set the required fields */ + tx_ctx.base = info->dma_ring_addr / 128; + tx_ctx.qlen = info->ring_len; + tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]); + tx_ctx.rdylist_act = 0; + tx_ctx.head_wb_ena = info->headwb_enabled; + tx_ctx.head_wb_addr = info->dma_headwb_addr; + + /* clear the context in the HMC */ + ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id); + if (ret) { + dev_err(&pf->pdev->dev, + "Failed to clear VF LAN Tx queue context %d, error: %d\n", + pf_queue_id, ret); + ret = -ENOENT; + goto error_context; + } + + /* set the context in the HMC */ + ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx); + if (ret) { + dev_err(&pf->pdev->dev, + "Failed to set VF LAN Tx queue context %d error: %d\n", + pf_queue_id, ret); + ret = -ENOENT; + goto error_context; + } + + /* associate this queue with the PCI VF function */ + qtx_ctl = I40E_QTX_CTL_VF_QUEUE; + qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) + & I40E_QTX_CTL_PF_INDX_MASK); + qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id) + << I40E_QTX_CTL_VFVM_INDX_SHIFT) + & I40E_QTX_CTL_VFVM_INDX_MASK); + wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl); + i40e_flush(hw); + +error_context: + return ret; +} + +/** + * i40e_config_vsi_rx_queue + * @vf: pointer to the VF info + * @vsi_id: id of VSI as provided by the FW + * @vsi_queue_id: vsi relative queue index + * @info: config. info + * + * configure rx queue + **/ +static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id, + u16 vsi_queue_id, + struct i40e_virtchnl_rxq_info *info) +{ + struct i40e_pf *pf = vf->pf; + struct i40e_hw *hw = &pf->hw; + struct i40e_hmc_obj_rxq rx_ctx; + u16 pf_queue_id; + int ret = 0; + + pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id); + + /* clear the context structure first */ + memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq)); + + /* only set the required fields */ + rx_ctx.base = info->dma_ring_addr / 128; + rx_ctx.qlen = info->ring_len; + + if (info->splithdr_enabled) { + rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 | + I40E_RX_SPLIT_IP | + I40E_RX_SPLIT_TCP_UDP | + I40E_RX_SPLIT_SCTP; + /* header length validation */ + if (info->hdr_size > ((2 * 1024) - 64)) { + ret = -EINVAL; + goto error_param; + } + rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT; + + /* set splitalways mode 10b */ + rx_ctx.dtype = 0x2; + } + + /* databuffer length validation */ + if (info->databuffer_size > ((16 * 1024) - 128)) { + ret = -EINVAL; + goto error_param; + } + rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT; + + /* max pkt. length validation */ + if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) { + ret = -EINVAL; + goto error_param; + } + rx_ctx.rxmax = info->max_pkt_size; + + /* enable 32bytes desc always */ + rx_ctx.dsize = 1; + + /* default values */ + rx_ctx.lrxqthresh = 2; + rx_ctx.crcstrip = 1; + rx_ctx.prefena = 1; + rx_ctx.l2tsel = 1; + + /* clear the context in the HMC */ + ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id); + if (ret) { + dev_err(&pf->pdev->dev, + "Failed to clear VF LAN Rx queue context %d, error: %d\n", + pf_queue_id, ret); + ret = -ENOENT; + goto error_param; + } + + /* set the context in the HMC */ + ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx); + if (ret) { + dev_err(&pf->pdev->dev, + "Failed to set VF LAN Rx queue context %d error: %d\n", + pf_queue_id, ret); + ret = -ENOENT; + goto error_param; + } + +error_param: + return ret; +} + +/** + * i40e_alloc_vsi_res + * @vf: pointer to the VF info + * @type: type of VSI to allocate + * + * alloc VF vsi context & resources + **/ +static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type) +{ + struct i40e_mac_filter *f = NULL; + struct i40e_pf *pf = vf->pf; + struct i40e_vsi *vsi; + int ret = 0; + + vsi = i40e_vsi_setup(pf, type, pf->vsi[pf->lan_vsi]->seid, vf->vf_id); + + if (!vsi) { + dev_err(&pf->pdev->dev, + "add vsi failed for VF %d, aq_err %d\n", + vf->vf_id, pf->hw.aq.asq_last_status); + ret = -ENOENT; + goto error_alloc_vsi_res; + } + if (type == I40E_VSI_SRIOV) { + u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + vf->lan_vsi_idx = vsi->idx; + vf->lan_vsi_id = vsi->id; + /* If the port VLAN has been configured and then the + * VF driver was removed then the VSI port VLAN + * configuration was destroyed. Check if there is + * a port VLAN and restore the VSI configuration if + * needed. + */ + if (vf->port_vlan_id) + i40e_vsi_add_pvid(vsi, vf->port_vlan_id); + f = i40e_add_filter(vsi, vf->default_lan_addr.addr, + vf->port_vlan_id, true, false); + if (!f) + dev_info(&pf->pdev->dev, + "Could not allocate VF MAC addr\n"); + f = i40e_add_filter(vsi, brdcast, vf->port_vlan_id, + true, false); + if (!f) + dev_info(&pf->pdev->dev, + "Could not allocate VF broadcast filter\n"); + } + + /* program mac filter */ + ret = i40e_sync_vsi_filters(vsi); + if (ret) + dev_err(&pf->pdev->dev, "Unable to program ucast filters\n"); + + /* Set VF bandwidth if specified */ + if (vf->tx_rate) { + ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid, + vf->tx_rate / 50, 0, NULL); + if (ret) + dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n", + vf->vf_id, ret); + } + +error_alloc_vsi_res: + return ret; +} + +/** + * i40e_enable_vf_mappings + * @vf: pointer to the VF info + * + * enable VF mappings + **/ +static void i40e_enable_vf_mappings(struct i40e_vf *vf) +{ + struct i40e_pf *pf = vf->pf; + struct i40e_hw *hw = &pf->hw; + u32 reg, total_queue_pairs = 0; + int j; + + /* Tell the hardware we're using noncontiguous mapping. HW requires + * that VF queues be mapped using this method, even when they are + * contiguous in real life + */ + wr32(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id), + I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK); + + /* enable VF vplan_qtable mappings */ + reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK; + wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg); + + /* map PF queues to VF queues */ + for (j = 0; j < pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; j++) { + u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id, j); + reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK); + wr32(hw, I40E_VPLAN_QTABLE(total_queue_pairs, vf->vf_id), reg); + total_queue_pairs++; + } + + /* map PF queues to VSI */ + for (j = 0; j < 7; j++) { + if (j * 2 >= pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs) { + reg = 0x07FF07FF; /* unused */ + } else { + u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id, + j * 2); + reg = qid; + qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id, + (j * 2) + 1); + reg |= qid << 16; + } + wr32(hw, I40E_VSILAN_QTABLE(j, vf->lan_vsi_id), reg); + } + + i40e_flush(hw); +} + +/** + * i40e_disable_vf_mappings + * @vf: pointer to the VF info + * + * disable VF mappings + **/ +static void i40e_disable_vf_mappings(struct i40e_vf *vf) +{ + struct i40e_pf *pf = vf->pf; + struct i40e_hw *hw = &pf->hw; + int i; + + /* disable qp mappings */ + wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0); + for (i = 0; i < I40E_MAX_VSI_QP; i++) + wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id), + I40E_QUEUE_END_OF_LIST); + i40e_flush(hw); +} + +/** + * i40e_free_vf_res + * @vf: pointer to the VF info + * + * free VF resources + **/ +static void i40e_free_vf_res(struct i40e_vf *vf) +{ + struct i40e_pf *pf = vf->pf; + struct i40e_hw *hw = &pf->hw; + u32 reg_idx, reg; + int i, msix_vf; + + /* free vsi & disconnect it from the parent uplink */ + if (vf->lan_vsi_idx) { + i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]); + vf->lan_vsi_idx = 0; + vf->lan_vsi_id = 0; + } + msix_vf = pf->hw.func_caps.num_msix_vectors_vf; + + /* disable interrupts so the VF starts in a known state */ + for (i = 0; i < msix_vf; i++) { + /* format is same for both registers */ + if (0 == i) + reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id); + else + reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) * + (vf->vf_id)) + + (i - 1)); + wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK); + i40e_flush(hw); + } + + /* clear the irq settings */ + for (i = 0; i < msix_vf; i++) { + /* format is same for both registers */ + if (0 == i) + reg_idx = I40E_VPINT_LNKLST0(vf->vf_id); + else + reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) * + (vf->vf_id)) + + (i - 1)); + reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK | + I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK); + wr32(hw, reg_idx, reg); + i40e_flush(hw); + } + /* reset some of the state varibles keeping + * track of the resources + */ + vf->num_queue_pairs = 0; + vf->vf_states = 0; +} + +/** + * i40e_alloc_vf_res + * @vf: pointer to the VF info + * + * allocate VF resources + **/ +static int i40e_alloc_vf_res(struct i40e_vf *vf) +{ + struct i40e_pf *pf = vf->pf; + int total_queue_pairs = 0; + int ret; + + /* allocate hw vsi context & associated resources */ + ret = i40e_alloc_vsi_res(vf, I40E_VSI_SRIOV); + if (ret) + goto error_alloc; + total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; + set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps); + + /* store the total qps number for the runtime + * VF req validation + */ + vf->num_queue_pairs = total_queue_pairs; + + /* VF is now completely initialized */ + set_bit(I40E_VF_STAT_INIT, &vf->vf_states); + +error_alloc: + if (ret) + i40e_free_vf_res(vf); + + return ret; +} + +#define VF_DEVICE_STATUS 0xAA +#define VF_TRANS_PENDING_MASK 0x20 +/** + * i40e_quiesce_vf_pci + * @vf: pointer to the VF structure + * + * Wait for VF PCI transactions to be cleared after reset. Returns -EIO + * if the transactions never clear. + **/ +static int i40e_quiesce_vf_pci(struct i40e_vf *vf) +{ + struct i40e_pf *pf = vf->pf; + struct i40e_hw *hw = &pf->hw; + int vf_abs_id, i; + u32 reg; + + vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id; + + wr32(hw, I40E_PF_PCI_CIAA, + VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT)); + for (i = 0; i < 100; i++) { + reg = rd32(hw, I40E_PF_PCI_CIAD); + if ((reg & VF_TRANS_PENDING_MASK) == 0) + return 0; + udelay(1); + } + return -EIO; +} + +/** + * i40e_reset_vf + * @vf: pointer to the VF structure + * @flr: VFLR was issued or not + * + * reset the VF + **/ +void i40e_reset_vf(struct i40e_vf *vf, bool flr) +{ + struct i40e_pf *pf = vf->pf; + struct i40e_hw *hw = &pf->hw; + bool rsd = false; + int i; + u32 reg; + + if (test_and_set_bit(__I40E_VF_DISABLE, &pf->state)) + return; + + /* warn the VF */ + clear_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states); + + /* In the case of a VFLR, the HW has already reset the VF and we + * just need to clean up, so don't hit the VFRTRIG register. + */ + if (!flr) { + /* reset VF using VPGEN_VFRTRIG reg */ + reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id)); + reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK; + wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg); + i40e_flush(hw); + } + + if (i40e_quiesce_vf_pci(vf)) + dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n", + vf->vf_id); + + /* poll VPGEN_VFRSTAT reg to make sure + * that reset is complete + */ + for (i = 0; i < 10; i++) { + /* VF reset requires driver to first reset the VF and then + * poll the status register to make sure that the reset + * completed successfully. Due to internal HW FIFO flushes, + * we must wait 10ms before the register will be valid. + */ + usleep_range(10000, 20000); + reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id)); + if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) { + rsd = true; + break; + } + } + + if (flr) + usleep_range(10000, 20000); + + if (!rsd) + dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n", + vf->vf_id); + wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_COMPLETED); + /* clear the reset bit in the VPGEN_VFRTRIG reg */ + reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id)); + reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK; + wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg); + + /* On initial reset, we won't have any queues */ + if (vf->lan_vsi_idx == 0) + goto complete_reset; + + i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], false); +complete_reset: + /* reallocate VF resources to reset the VSI state */ + i40e_free_vf_res(vf); + i40e_alloc_vf_res(vf); + i40e_enable_vf_mappings(vf); + set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states); + + /* tell the VF the reset is done */ + wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_VFACTIVE); + i40e_flush(hw); + clear_bit(__I40E_VF_DISABLE, &pf->state); +} + +/** + * i40e_free_vfs + * @pf: pointer to the PF structure + * + * free VF resources + **/ +void i40e_free_vfs(struct i40e_pf *pf) +{ + struct i40e_hw *hw = &pf->hw; + u32 reg_idx, bit_idx; + int i, tmp, vf_id; + + if (!pf->vf) + return; + while (test_and_set_bit(__I40E_VF_DISABLE, &pf->state)) + usleep_range(1000, 2000); + + for (i = 0; i < pf->num_alloc_vfs; i++) + if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states)) + i40e_vsi_control_rings(pf->vsi[pf->vf[i].lan_vsi_idx], + false); + + /* Disable IOV before freeing resources. This lets any VF drivers + * running in the host get themselves cleaned up before we yank + * the carpet out from underneath their feet. + */ + if (!pci_vfs_assigned(pf->pdev)) + pci_disable_sriov(pf->pdev); + else + dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n"); + + msleep(20); /* let any messages in transit get finished up */ + + /* free up VF resources */ + tmp = pf->num_alloc_vfs; + pf->num_alloc_vfs = 0; + for (i = 0; i < tmp; i++) { + if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states)) + i40e_free_vf_res(&pf->vf[i]); + /* disable qp mappings */ + i40e_disable_vf_mappings(&pf->vf[i]); + } + + kfree(pf->vf); + pf->vf = NULL; + + /* This check is for when the driver is unloaded while VFs are + * assigned. Setting the number of VFs to 0 through sysfs is caught + * before this function ever gets called. + */ + if (!pci_vfs_assigned(pf->pdev)) { + /* Acknowledge VFLR for all VFS. Without this, VFs will fail to + * work correctly when SR-IOV gets re-enabled. + */ + for (vf_id = 0; vf_id < tmp; vf_id++) { + reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32; + bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32; + wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx)); + } + } + clear_bit(__I40E_VF_DISABLE, &pf->state); +} + +#ifdef CONFIG_PCI_IOV +/** + * i40e_alloc_vfs + * @pf: pointer to the PF structure + * @num_alloc_vfs: number of VFs to allocate + * + * allocate VF resources + **/ +int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs) +{ + struct i40e_vf *vfs; + int i, ret = 0; + + /* Disable interrupt 0 so we don't try to handle the VFLR. */ + i40e_irq_dynamic_disable_icr0(pf); + + /* Check to see if we're just allocating resources for extant VFs */ + if (pci_num_vf(pf->pdev) != num_alloc_vfs) { + ret = pci_enable_sriov(pf->pdev, num_alloc_vfs); + if (ret) { + dev_err(&pf->pdev->dev, + "Failed to enable SR-IOV, error %d.\n", ret); + pf->num_alloc_vfs = 0; + goto err_iov; + } + } + /* allocate memory */ + vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL); + if (!vfs) { + ret = -ENOMEM; + goto err_alloc; + } + pf->vf = vfs; + + /* apply default profile */ + for (i = 0; i < num_alloc_vfs; i++) { + vfs[i].pf = pf; + vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB; + vfs[i].vf_id = i; + + /* assign default capabilities */ + set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps); + vfs[i].spoofchk = true; + /* VF resources get allocated during reset */ + i40e_reset_vf(&vfs[i], false); + + /* enable VF vplan_qtable mappings */ + i40e_enable_vf_mappings(&vfs[i]); + } + pf->num_alloc_vfs = num_alloc_vfs; + +err_alloc: + if (ret) + i40e_free_vfs(pf); +err_iov: + /* Re-enable interrupt 0. */ + i40e_irq_dynamic_enable_icr0(pf); + return ret; +} + +#endif +/** + * i40e_pci_sriov_enable + * @pdev: pointer to a pci_dev structure + * @num_vfs: number of VFs to allocate + * + * Enable or change the number of VFs + **/ +static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs) +{ +#ifdef CONFIG_PCI_IOV + struct i40e_pf *pf = pci_get_drvdata(pdev); + int pre_existing_vfs = pci_num_vf(pdev); + int err = 0; + + dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs); + if (pre_existing_vfs && pre_existing_vfs != num_vfs) + i40e_free_vfs(pf); + else if (pre_existing_vfs && pre_existing_vfs == num_vfs) + goto out; + + if (num_vfs > pf->num_req_vfs) { + err = -EPERM; + goto err_out; + } + + err = i40e_alloc_vfs(pf, num_vfs); + if (err) { + dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err); + goto err_out; + } + +out: + return num_vfs; + +err_out: + return err; +#endif + return 0; +} + +/** + * i40e_pci_sriov_configure + * @pdev: pointer to a pci_dev structure + * @num_vfs: number of VFs to allocate + * + * Enable or change the number of VFs. Called when the user updates the number + * of VFs in sysfs. + **/ +int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs) +{ + struct i40e_pf *pf = pci_get_drvdata(pdev); + + if (num_vfs) { + if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) { + pf->flags |= I40E_FLAG_VEB_MODE_ENABLED; + i40e_do_reset_safe(pf, + BIT_ULL(__I40E_PF_RESET_REQUESTED)); + } + return i40e_pci_sriov_enable(pdev, num_vfs); + } + + if (!pci_vfs_assigned(pf->pdev)) { + i40e_free_vfs(pf); + pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED; + i40e_do_reset_safe(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED)); + } else { + dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n"); + return -EINVAL; + } + return 0; +} + +/***********************virtual channel routines******************/ + +/** + * i40e_vc_send_msg_to_vf + * @vf: pointer to the VF info + * @v_opcode: virtual channel opcode + * @v_retval: virtual channel return value + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * send msg to VF + **/ +static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode, + u32 v_retval, u8 *msg, u16 msglen) +{ + struct i40e_pf *pf; + struct i40e_hw *hw; + int abs_vf_id; + i40e_status aq_ret; + + /* validate the request */ + if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs) + return -EINVAL; + + pf = vf->pf; + hw = &pf->hw; + abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id; + + /* single place to detect unsuccessful return values */ + if (v_retval) { + vf->num_invalid_msgs++; + dev_err(&pf->pdev->dev, "Failed opcode %d Error: %d\n", + v_opcode, v_retval); + if (vf->num_invalid_msgs > + I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) { + dev_err(&pf->pdev->dev, + "Number of invalid messages exceeded for VF %d\n", + vf->vf_id); + dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n"); + set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states); + } + } else { + vf->num_valid_msgs++; + } + + aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval, + msg, msglen, NULL); + if (aq_ret) { + dev_err(&pf->pdev->dev, + "Unable to send the message to VF %d aq_err %d\n", + vf->vf_id, pf->hw.aq.asq_last_status); + return -EIO; + } + + return 0; +} + +/** + * i40e_vc_send_resp_to_vf + * @vf: pointer to the VF info + * @opcode: operation code + * @retval: return value + * + * send resp msg to VF + **/ +static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf, + enum i40e_virtchnl_ops opcode, + i40e_status retval) +{ + return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0); +} + +/** + * i40e_vc_get_version_msg + * @vf: pointer to the VF info + * + * called from the VF to request the API version used by the PF + **/ +static int i40e_vc_get_version_msg(struct i40e_vf *vf) +{ + struct i40e_virtchnl_version_info info = { + I40E_VIRTCHNL_VERSION_MAJOR, I40E_VIRTCHNL_VERSION_MINOR + }; + + return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_VERSION, + I40E_SUCCESS, (u8 *)&info, + sizeof(struct + i40e_virtchnl_version_info)); +} + +/** + * i40e_vc_get_vf_resources_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * called from the VF to request its resources + **/ +static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf) +{ + struct i40e_virtchnl_vf_resource *vfres = NULL; + struct i40e_pf *pf = vf->pf; + i40e_status aq_ret = 0; + struct i40e_vsi *vsi; + int i = 0, len = 0; + int num_vsis = 1; + int ret; + + if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) { + aq_ret = I40E_ERR_PARAM; + goto err; + } + + len = (sizeof(struct i40e_virtchnl_vf_resource) + + sizeof(struct i40e_virtchnl_vsi_resource) * num_vsis); + + vfres = kzalloc(len, GFP_KERNEL); + if (!vfres) { + aq_ret = I40E_ERR_NO_MEMORY; + len = 0; + goto err; + } + + vfres->vf_offload_flags = I40E_VIRTCHNL_VF_OFFLOAD_L2; + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi->info.pvid) + vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_VLAN; + + vfres->num_vsis = num_vsis; + vfres->num_queue_pairs = vf->num_queue_pairs; + vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf; + if (vf->lan_vsi_idx) { + vfres->vsi_res[i].vsi_id = vf->lan_vsi_id; + vfres->vsi_res[i].vsi_type = I40E_VSI_SRIOV; + vfres->vsi_res[i].num_queue_pairs = + pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; + memcpy(vfres->vsi_res[i].default_mac_addr, + vf->default_lan_addr.addr, ETH_ALEN); + i++; + } + set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states); + +err: + /* send the response back to the VF */ + ret = i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_VF_RESOURCES, + aq_ret, (u8 *)vfres, len); + + kfree(vfres); + return ret; +} + +/** + * i40e_vc_reset_vf_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * called from the VF to reset itself, + * unlike other virtchnl messages, PF driver + * doesn't send the response back to the VF + **/ +static void i40e_vc_reset_vf_msg(struct i40e_vf *vf) +{ + if (test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) + i40e_reset_vf(vf, false); +} + +/** + * i40e_vc_config_promiscuous_mode_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * called from the VF to configure the promiscuous mode of + * VF vsis + **/ +static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, + u8 *msg, u16 msglen) +{ + struct i40e_virtchnl_promisc_info *info = + (struct i40e_virtchnl_promisc_info *)msg; + struct i40e_pf *pf = vf->pf; + struct i40e_hw *hw = &pf->hw; + struct i40e_vsi *vsi; + bool allmulti = false; + i40e_status aq_ret; + + vsi = i40e_find_vsi_from_id(pf, info->vsi_id); + if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) || + !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) || + !i40e_vc_isvalid_vsi_id(vf, info->vsi_id) || + (vsi->type != I40E_VSI_FCOE)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + if (info->flags & I40E_FLAG_VF_MULTICAST_PROMISC) + allmulti = true; + aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi->seid, + allmulti, NULL); + +error_param: + /* send the response to the VF */ + return i40e_vc_send_resp_to_vf(vf, + I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE, + aq_ret); +} + +/** + * i40e_vc_config_queues_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * called from the VF to configure the rx/tx + * queues + **/ +static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) +{ + struct i40e_virtchnl_vsi_queue_config_info *qci = + (struct i40e_virtchnl_vsi_queue_config_info *)msg; + struct i40e_virtchnl_queue_pair_info *qpi; + struct i40e_pf *pf = vf->pf; + u16 vsi_id, vsi_queue_id; + i40e_status aq_ret = 0; + int i; + + if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + vsi_id = qci->vsi_id; + if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + for (i = 0; i < qci->num_queue_pairs; i++) { + qpi = &qci->qpair[i]; + vsi_queue_id = qpi->txq.queue_id; + if ((qpi->txq.vsi_id != vsi_id) || + (qpi->rxq.vsi_id != vsi_id) || + (qpi->rxq.queue_id != vsi_queue_id) || + !i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id, + &qpi->rxq) || + i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id, + &qpi->txq)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + } + /* set vsi num_queue_pairs in use to num configured by VF */ + pf->vsi[vf->lan_vsi_idx]->num_queue_pairs = qci->num_queue_pairs; + +error_param: + /* send the response to the VF */ + return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES, + aq_ret); +} + +/** + * i40e_vc_config_irq_map_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * called from the VF to configure the irq to + * queue map + **/ +static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) +{ + struct i40e_virtchnl_irq_map_info *irqmap_info = + (struct i40e_virtchnl_irq_map_info *)msg; + struct i40e_virtchnl_vector_map *map; + u16 vsi_id, vsi_queue_id, vector_id; + i40e_status aq_ret = 0; + unsigned long tempmap; + int i; + + if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + for (i = 0; i < irqmap_info->num_vectors; i++) { + map = &irqmap_info->vecmap[i]; + + vector_id = map->vector_id; + vsi_id = map->vsi_id; + /* validate msg params */ + if (!i40e_vc_isvalid_vector_id(vf, vector_id) || + !i40e_vc_isvalid_vsi_id(vf, vsi_id)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + /* lookout for the invalid queue index */ + tempmap = map->rxq_map; + for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) { + if (!i40e_vc_isvalid_queue_id(vf, vsi_id, + vsi_queue_id)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + } + + tempmap = map->txq_map; + for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) { + if (!i40e_vc_isvalid_queue_id(vf, vsi_id, + vsi_queue_id)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + } + + i40e_config_irq_link_list(vf, vsi_id, map); + } +error_param: + /* send the response to the VF */ + return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP, + aq_ret); +} + +/** + * i40e_vc_enable_queues_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * called from the VF to enable all or specific queue(s) + **/ +static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) +{ + struct i40e_virtchnl_queue_select *vqs = + (struct i40e_virtchnl_queue_select *)msg; + struct i40e_pf *pf = vf->pf; + u16 vsi_id = vqs->vsi_id; + i40e_status aq_ret = 0; + + if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + if (i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], true)) + aq_ret = I40E_ERR_TIMEOUT; +error_param: + /* send the response to the VF */ + return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ENABLE_QUEUES, + aq_ret); +} + +/** + * i40e_vc_disable_queues_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * called from the VF to disable all or specific + * queue(s) + **/ +static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) +{ + struct i40e_virtchnl_queue_select *vqs = + (struct i40e_virtchnl_queue_select *)msg; + struct i40e_pf *pf = vf->pf; + i40e_status aq_ret = 0; + + if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + if (i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], false)) + aq_ret = I40E_ERR_TIMEOUT; + +error_param: + /* send the response to the VF */ + return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DISABLE_QUEUES, + aq_ret); +} + +/** + * i40e_vc_get_stats_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * called from the VF to get vsi stats + **/ +static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) +{ + struct i40e_virtchnl_queue_select *vqs = + (struct i40e_virtchnl_queue_select *)msg; + struct i40e_pf *pf = vf->pf; + struct i40e_eth_stats stats; + i40e_status aq_ret = 0; + struct i40e_vsi *vsi; + + memset(&stats, 0, sizeof(struct i40e_eth_stats)); + + if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + i40e_update_eth_stats(vsi); + stats = vsi->eth_stats; + +error_param: + /* send the response back to the VF */ + return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_STATS, aq_ret, + (u8 *)&stats, sizeof(stats)); +} + +/** + * i40e_check_vf_permission + * @vf: pointer to the VF info + * @macaddr: pointer to the MAC Address being checked + * + * Check if the VF has permission to add or delete unicast MAC address + * filters and return error code -EPERM if not. Then check if the + * address filter requested is broadcast or zero and if so return + * an invalid MAC address error code. + **/ +static inline int i40e_check_vf_permission(struct i40e_vf *vf, u8 *macaddr) +{ + struct i40e_pf *pf = vf->pf; + int ret = 0; + + if (is_broadcast_ether_addr(macaddr) || + is_zero_ether_addr(macaddr)) { + dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", macaddr); + ret = I40E_ERR_INVALID_MAC_ADDR; + } else if (vf->pf_set_mac && !is_multicast_ether_addr(macaddr) && + !ether_addr_equal(macaddr, vf->default_lan_addr.addr)) { + /* If the host VMM administrator has set the VF MAC address + * administratively via the ndo_set_vf_mac command then deny + * permission to the VF to add or delete unicast MAC addresses. + * The VF may request to set the MAC address filter already + * assigned to it so do not return an error in that case. + */ + dev_err(&pf->pdev->dev, + "VF attempting to override administratively set MAC address\nPlease reload the VF driver to resume normal operation\n"); + ret = -EPERM; + } + return ret; +} + +/** + * i40e_vc_add_mac_addr_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * add guest mac address filter + **/ +static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) +{ + struct i40e_virtchnl_ether_addr_list *al = + (struct i40e_virtchnl_ether_addr_list *)msg; + struct i40e_pf *pf = vf->pf; + struct i40e_vsi *vsi = NULL; + u16 vsi_id = al->vsi_id; + i40e_status ret = 0; + int i; + + if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) || + !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) || + !i40e_vc_isvalid_vsi_id(vf, vsi_id)) { + ret = I40E_ERR_PARAM; + goto error_param; + } + + for (i = 0; i < al->num_elements; i++) { + ret = i40e_check_vf_permission(vf, al->list[i].addr); + if (ret) + goto error_param; + } + vsi = pf->vsi[vf->lan_vsi_idx]; + + /* add new addresses to the list */ + for (i = 0; i < al->num_elements; i++) { + struct i40e_mac_filter *f; + + f = i40e_find_mac(vsi, al->list[i].addr, true, false); + if (!f) { + if (i40e_is_vsi_in_vlan(vsi)) + f = i40e_put_mac_in_vlan(vsi, al->list[i].addr, + true, false); + else + f = i40e_add_filter(vsi, al->list[i].addr, -1, + true, false); + } + + if (!f) { + dev_err(&pf->pdev->dev, + "Unable to add VF MAC filter\n"); + ret = I40E_ERR_PARAM; + goto error_param; + } + } + + /* program the updated filter list */ + if (i40e_sync_vsi_filters(vsi)) + dev_err(&pf->pdev->dev, "Unable to program VF MAC filters\n"); + +error_param: + /* send the response to the VF */ + return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS, + ret); +} + +/** + * i40e_vc_del_mac_addr_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * remove guest mac address filter + **/ +static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) +{ + struct i40e_virtchnl_ether_addr_list *al = + (struct i40e_virtchnl_ether_addr_list *)msg; + struct i40e_pf *pf = vf->pf; + struct i40e_vsi *vsi = NULL; + u16 vsi_id = al->vsi_id; + i40e_status ret = 0; + int i; + + if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) || + !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) || + !i40e_vc_isvalid_vsi_id(vf, vsi_id)) { + ret = I40E_ERR_PARAM; + goto error_param; + } + + for (i = 0; i < al->num_elements; i++) { + if (is_broadcast_ether_addr(al->list[i].addr) || + is_zero_ether_addr(al->list[i].addr)) { + dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", + al->list[i].addr); + ret = I40E_ERR_INVALID_MAC_ADDR; + goto error_param; + } + } + vsi = pf->vsi[vf->lan_vsi_idx]; + + /* delete addresses from the list */ + for (i = 0; i < al->num_elements; i++) + i40e_del_filter(vsi, al->list[i].addr, + I40E_VLAN_ANY, true, false); + + /* program the updated filter list */ + if (i40e_sync_vsi_filters(vsi)) + dev_err(&pf->pdev->dev, "Unable to program VF MAC filters\n"); + +error_param: + /* send the response to the VF */ + return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS, + ret); +} + +/** + * i40e_vc_add_vlan_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * program guest vlan id + **/ +static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) +{ + struct i40e_virtchnl_vlan_filter_list *vfl = + (struct i40e_virtchnl_vlan_filter_list *)msg; + struct i40e_pf *pf = vf->pf; + struct i40e_vsi *vsi = NULL; + u16 vsi_id = vfl->vsi_id; + i40e_status aq_ret = 0; + int i; + + if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) || + !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) || + !i40e_vc_isvalid_vsi_id(vf, vsi_id)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + for (i = 0; i < vfl->num_elements; i++) { + if (vfl->vlan_id[i] > I40E_MAX_VLANID) { + aq_ret = I40E_ERR_PARAM; + dev_err(&pf->pdev->dev, + "invalid VF VLAN id %d\n", vfl->vlan_id[i]); + goto error_param; + } + } + vsi = pf->vsi[vf->lan_vsi_idx]; + if (vsi->info.pvid) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + i40e_vlan_stripping_enable(vsi); + for (i = 0; i < vfl->num_elements; i++) { + /* add new VLAN filter */ + int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]); + if (ret) + dev_err(&pf->pdev->dev, + "Unable to add VF vlan filter %d, error %d\n", + vfl->vlan_id[i], ret); + } + +error_param: + /* send the response to the VF */ + return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_VLAN, aq_ret); +} + +/** + * i40e_vc_remove_vlan_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * remove programmed guest vlan id + **/ +static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen) +{ + struct i40e_virtchnl_vlan_filter_list *vfl = + (struct i40e_virtchnl_vlan_filter_list *)msg; + struct i40e_pf *pf = vf->pf; + struct i40e_vsi *vsi = NULL; + u16 vsi_id = vfl->vsi_id; + i40e_status aq_ret = 0; + int i; + + if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) || + !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) || + !i40e_vc_isvalid_vsi_id(vf, vsi_id)) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + for (i = 0; i < vfl->num_elements; i++) { + if (vfl->vlan_id[i] > I40E_MAX_VLANID) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (vsi->info.pvid) { + aq_ret = I40E_ERR_PARAM; + goto error_param; + } + + for (i = 0; i < vfl->num_elements; i++) { + int ret = i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]); + if (ret) + dev_err(&pf->pdev->dev, + "Unable to delete VF vlan filter %d, error %d\n", + vfl->vlan_id[i], ret); + } + +error_param: + /* send the response to the VF */ + return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_VLAN, aq_ret); +} + +/** + * i40e_vc_validate_vf_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @msglen: msg length + * @msghndl: msg handle + * + * validate msg + **/ +static int i40e_vc_validate_vf_msg(struct i40e_vf *vf, u32 v_opcode, + u32 v_retval, u8 *msg, u16 msglen) +{ + bool err_msg_format = false; + int valid_len; + + /* Check if VF is disabled. */ + if (test_bit(I40E_VF_STAT_DISABLED, &vf->vf_states)) + return I40E_ERR_PARAM; + + /* Validate message length. */ + switch (v_opcode) { + case I40E_VIRTCHNL_OP_VERSION: + valid_len = sizeof(struct i40e_virtchnl_version_info); + break; + case I40E_VIRTCHNL_OP_RESET_VF: + case I40E_VIRTCHNL_OP_GET_VF_RESOURCES: + valid_len = 0; + break; + case I40E_VIRTCHNL_OP_CONFIG_TX_QUEUE: + valid_len = sizeof(struct i40e_virtchnl_txq_info); + break; + case I40E_VIRTCHNL_OP_CONFIG_RX_QUEUE: + valid_len = sizeof(struct i40e_virtchnl_rxq_info); + break; + case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES: + valid_len = sizeof(struct i40e_virtchnl_vsi_queue_config_info); + if (msglen >= valid_len) { + struct i40e_virtchnl_vsi_queue_config_info *vqc = + (struct i40e_virtchnl_vsi_queue_config_info *)msg; + valid_len += (vqc->num_queue_pairs * + sizeof(struct + i40e_virtchnl_queue_pair_info)); + if (vqc->num_queue_pairs == 0) + err_msg_format = true; + } + break; + case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP: + valid_len = sizeof(struct i40e_virtchnl_irq_map_info); + if (msglen >= valid_len) { + struct i40e_virtchnl_irq_map_info *vimi = + (struct i40e_virtchnl_irq_map_info *)msg; + valid_len += (vimi->num_vectors * + sizeof(struct i40e_virtchnl_vector_map)); + if (vimi->num_vectors == 0) + err_msg_format = true; + } + break; + case I40E_VIRTCHNL_OP_ENABLE_QUEUES: + case I40E_VIRTCHNL_OP_DISABLE_QUEUES: + valid_len = sizeof(struct i40e_virtchnl_queue_select); + break; + case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS: + case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS: + valid_len = sizeof(struct i40e_virtchnl_ether_addr_list); + if (msglen >= valid_len) { + struct i40e_virtchnl_ether_addr_list *veal = + (struct i40e_virtchnl_ether_addr_list *)msg; + valid_len += veal->num_elements * + sizeof(struct i40e_virtchnl_ether_addr); + if (veal->num_elements == 0) + err_msg_format = true; + } + break; + case I40E_VIRTCHNL_OP_ADD_VLAN: + case I40E_VIRTCHNL_OP_DEL_VLAN: + valid_len = sizeof(struct i40e_virtchnl_vlan_filter_list); + if (msglen >= valid_len) { + struct i40e_virtchnl_vlan_filter_list *vfl = + (struct i40e_virtchnl_vlan_filter_list *)msg; + valid_len += vfl->num_elements * sizeof(u16); + if (vfl->num_elements == 0) + err_msg_format = true; + } + break; + case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE: + valid_len = sizeof(struct i40e_virtchnl_promisc_info); + break; + case I40E_VIRTCHNL_OP_GET_STATS: + valid_len = sizeof(struct i40e_virtchnl_queue_select); + break; + /* These are always errors coming from the VF. */ + case I40E_VIRTCHNL_OP_EVENT: + case I40E_VIRTCHNL_OP_UNKNOWN: + default: + return -EPERM; + break; + } + /* few more checks */ + if ((valid_len != msglen) || (err_msg_format)) { + i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM); + return -EINVAL; + } else { + return 0; + } +} + +/** + * i40e_vc_process_vf_msg + * @pf: pointer to the PF structure + * @vf_id: source VF id + * @msg: pointer to the msg buffer + * @msglen: msg length + * @msghndl: msg handle + * + * called from the common aeq/arq handler to + * process request from VF + **/ +int i40e_vc_process_vf_msg(struct i40e_pf *pf, u16 vf_id, u32 v_opcode, + u32 v_retval, u8 *msg, u16 msglen) +{ + struct i40e_hw *hw = &pf->hw; + unsigned int local_vf_id = vf_id - hw->func_caps.vf_base_id; + struct i40e_vf *vf; + int ret; + + pf->vf_aq_requests++; + if (local_vf_id >= pf->num_alloc_vfs) + return -EINVAL; + vf = &(pf->vf[local_vf_id]); + /* perform basic checks on the msg */ + ret = i40e_vc_validate_vf_msg(vf, v_opcode, v_retval, msg, msglen); + + if (ret) { + dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n", + local_vf_id, v_opcode, msglen); + return ret; + } + + switch (v_opcode) { + case I40E_VIRTCHNL_OP_VERSION: + ret = i40e_vc_get_version_msg(vf); + break; + case I40E_VIRTCHNL_OP_GET_VF_RESOURCES: + ret = i40e_vc_get_vf_resources_msg(vf); + break; + case I40E_VIRTCHNL_OP_RESET_VF: + i40e_vc_reset_vf_msg(vf); + ret = 0; + break; + case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE: + ret = i40e_vc_config_promiscuous_mode_msg(vf, msg, msglen); + break; + case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES: + ret = i40e_vc_config_queues_msg(vf, msg, msglen); + break; + case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP: + ret = i40e_vc_config_irq_map_msg(vf, msg, msglen); + break; + case I40E_VIRTCHNL_OP_ENABLE_QUEUES: + ret = i40e_vc_enable_queues_msg(vf, msg, msglen); + i40e_vc_notify_vf_link_state(vf); + break; + case I40E_VIRTCHNL_OP_DISABLE_QUEUES: + ret = i40e_vc_disable_queues_msg(vf, msg, msglen); + break; + case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS: + ret = i40e_vc_add_mac_addr_msg(vf, msg, msglen); + break; + case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS: + ret = i40e_vc_del_mac_addr_msg(vf, msg, msglen); + break; + case I40E_VIRTCHNL_OP_ADD_VLAN: + ret = i40e_vc_add_vlan_msg(vf, msg, msglen); + break; + case I40E_VIRTCHNL_OP_DEL_VLAN: + ret = i40e_vc_remove_vlan_msg(vf, msg, msglen); + break; + case I40E_VIRTCHNL_OP_GET_STATS: + ret = i40e_vc_get_stats_msg(vf, msg, msglen); + break; + case I40E_VIRTCHNL_OP_UNKNOWN: + default: + dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n", + v_opcode, local_vf_id); + ret = i40e_vc_send_resp_to_vf(vf, v_opcode, + I40E_ERR_NOT_IMPLEMENTED); + break; + } + + return ret; +} + +/** + * i40e_vc_process_vflr_event + * @pf: pointer to the PF structure + * + * called from the vlfr irq handler to + * free up VF resources and state variables + **/ +int i40e_vc_process_vflr_event(struct i40e_pf *pf) +{ + u32 reg, reg_idx, bit_idx, vf_id; + struct i40e_hw *hw = &pf->hw; + struct i40e_vf *vf; + + if (!test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state)) + return 0; + + /* re-enable vflr interrupt cause */ + reg = rd32(hw, I40E_PFINT_ICR0_ENA); + reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK; + wr32(hw, I40E_PFINT_ICR0_ENA, reg); + i40e_flush(hw); + + clear_bit(__I40E_VFLR_EVENT_PENDING, &pf->state); + for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) { + reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32; + bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32; + /* read GLGEN_VFLRSTAT register to find out the flr VFs */ + vf = &pf->vf[vf_id]; + reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx)); + if (reg & (1 << bit_idx)) { + /* clear the bit in GLGEN_VFLRSTAT */ + wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx)); + + if (!test_bit(__I40E_DOWN, &pf->state)) + i40e_reset_vf(vf, true); + } + } + + return 0; +} + +/** + * i40e_ndo_set_vf_mac + * @netdev: network interface device structure + * @vf_id: VF identifier + * @mac: mac address + * + * program VF mac address + **/ +int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + struct i40e_mac_filter *f; + struct i40e_vf *vf; + int ret = 0; + + /* validate the request */ + if (vf_id >= pf->num_alloc_vfs) { + dev_err(&pf->pdev->dev, + "Invalid VF Identifier %d\n", vf_id); + ret = -EINVAL; + goto error_param; + } + + vf = &(pf->vf[vf_id]); + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) { + dev_err(&pf->pdev->dev, + "Uninitialized VF %d\n", vf_id); + ret = -EINVAL; + goto error_param; + } + + if (!is_valid_ether_addr(mac)) { + dev_err(&pf->pdev->dev, + "Invalid VF ethernet address\n"); + ret = -EINVAL; + goto error_param; + } + + /* delete the temporary mac address */ + i40e_del_filter(vsi, vf->default_lan_addr.addr, vf->port_vlan_id, + true, false); + + /* Delete all the filters for this VSI - we're going to kill it + * anyway. + */ + list_for_each_entry(f, &vsi->mac_filter_list, list) + i40e_del_filter(vsi, f->macaddr, f->vlan, true, false); + + dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n", mac, vf_id); + /* program mac filter */ + if (i40e_sync_vsi_filters(vsi)) { + dev_err(&pf->pdev->dev, "Unable to program ucast filters\n"); + ret = -EIO; + goto error_param; + } + ether_addr_copy(vf->default_lan_addr.addr, mac); + vf->pf_set_mac = true; + /* Force the VF driver stop so it has to reload with new MAC address */ + i40e_vc_disable_vf(pf, vf); + dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n"); + +error_param: + return ret; +} + +/** + * i40e_ndo_set_vf_port_vlan + * @netdev: network interface device structure + * @vf_id: VF identifier + * @vlan_id: mac address + * @qos: priority setting + * + * program VF vlan id and/or qos + **/ +int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, + int vf_id, u16 vlan_id, u8 qos) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_vsi *vsi; + struct i40e_vf *vf; + int ret = 0; + + /* validate the request */ + if (vf_id >= pf->num_alloc_vfs) { + dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); + ret = -EINVAL; + goto error_pvid; + } + + if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) { + dev_err(&pf->pdev->dev, "Invalid VF Parameters\n"); + ret = -EINVAL; + goto error_pvid; + } + + vf = &(pf->vf[vf_id]); + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) { + dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id); + ret = -EINVAL; + goto error_pvid; + } + + if (vsi->info.pvid == 0 && i40e_is_vsi_in_vlan(vsi)) { + dev_err(&pf->pdev->dev, + "VF %d has already configured VLAN filters and the administrator is requesting a port VLAN override.\nPlease unload and reload the VF driver for this change to take effect.\n", + vf_id); + /* Administrator Error - knock the VF offline until he does + * the right thing by reconfiguring his network correctly + * and then reloading the VF driver. + */ + i40e_vc_disable_vf(pf, vf); + } + + /* Check for condition where there was already a port VLAN ID + * filter set and now it is being deleted by setting it to zero. + * Additionally check for the condition where there was a port + * VLAN but now there is a new and different port VLAN being set. + * Before deleting all the old VLAN filters we must add new ones + * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our + * MAC addresses deleted. + */ + if ((!(vlan_id || qos) || + (vlan_id | qos) != le16_to_cpu(vsi->info.pvid)) && + vsi->info.pvid) + ret = i40e_vsi_add_vlan(vsi, I40E_VLAN_ANY); + + if (vsi->info.pvid) { + /* kill old VLAN */ + ret = i40e_vsi_kill_vlan(vsi, (le16_to_cpu(vsi->info.pvid) & + VLAN_VID_MASK)); + if (ret) { + dev_info(&vsi->back->pdev->dev, + "remove VLAN failed, ret=%d, aq_err=%d\n", + ret, pf->hw.aq.asq_last_status); + } + } + if (vlan_id || qos) + ret = i40e_vsi_add_pvid(vsi, + vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT)); + else + i40e_vsi_remove_pvid(vsi); + + if (vlan_id) { + dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n", + vlan_id, qos, vf_id); + + /* add new VLAN filter */ + ret = i40e_vsi_add_vlan(vsi, vlan_id); + if (ret) { + dev_info(&vsi->back->pdev->dev, + "add VF VLAN failed, ret=%d aq_err=%d\n", ret, + vsi->back->hw.aq.asq_last_status); + goto error_pvid; + } + /* Kill non-vlan MAC filters - ignore error return since + * there might not be any non-vlan MAC filters. + */ + i40e_vsi_kill_vlan(vsi, I40E_VLAN_ANY); + } + + if (ret) { + dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n"); + goto error_pvid; + } + /* The Port VLAN needs to be saved across resets the same as the + * default LAN MAC address. + */ + vf->port_vlan_id = le16_to_cpu(vsi->info.pvid); + ret = 0; + +error_pvid: + return ret; +} + +#define I40E_BW_CREDIT_DIVISOR 50 /* 50Mbps per BW credit */ +#define I40E_MAX_BW_INACTIVE_ACCUM 4 /* device can accumulate 4 credits max */ +/** + * i40e_ndo_set_vf_bw + * @netdev: network interface device structure + * @vf_id: VF identifier + * @tx_rate: Tx rate + * + * configure VF Tx rate + **/ +int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate, + int max_tx_rate) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_vsi *vsi; + struct i40e_vf *vf; + int speed = 0; + int ret = 0; + + /* validate the request */ + if (vf_id >= pf->num_alloc_vfs) { + dev_err(&pf->pdev->dev, "Invalid VF Identifier %d.\n", vf_id); + ret = -EINVAL; + goto error; + } + + if (min_tx_rate) { + dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n", + min_tx_rate, vf_id); + return -EINVAL; + } + + vf = &(pf->vf[vf_id]); + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) { + dev_err(&pf->pdev->dev, "Uninitialized VF %d.\n", vf_id); + ret = -EINVAL; + goto error; + } + + switch (pf->hw.phy.link_info.link_speed) { + case I40E_LINK_SPEED_40GB: + speed = 40000; + break; + case I40E_LINK_SPEED_10GB: + speed = 10000; + break; + case I40E_LINK_SPEED_1GB: + speed = 1000; + break; + default: + break; + } + + if (max_tx_rate > speed) { + dev_err(&pf->pdev->dev, "Invalid max tx rate %d specified for VF %d.", + max_tx_rate, vf->vf_id); + ret = -EINVAL; + goto error; + } + + if ((max_tx_rate < 50) && (max_tx_rate > 0)) { + dev_warn(&pf->pdev->dev, "Setting max Tx rate to minimum usable value of 50Mbps.\n"); + max_tx_rate = 50; + } + + /* Tx rate credits are in values of 50Mbps, 0 is disabled*/ + ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid, + max_tx_rate / I40E_BW_CREDIT_DIVISOR, + I40E_MAX_BW_INACTIVE_ACCUM, NULL); + if (ret) { + dev_err(&pf->pdev->dev, "Unable to set max tx rate, error code %d.\n", + ret); + ret = -EIO; + goto error; + } + vf->tx_rate = max_tx_rate; +error: + return ret; +} + +/** + * i40e_ndo_get_vf_config + * @netdev: network interface device structure + * @vf_id: VF identifier + * @ivi: VF configuration structure + * + * return VF configuration + **/ +int i40e_ndo_get_vf_config(struct net_device *netdev, + int vf_id, struct ifla_vf_info *ivi) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + struct i40e_vf *vf; + int ret = 0; + + /* validate the request */ + if (vf_id >= pf->num_alloc_vfs) { + dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); + ret = -EINVAL; + goto error_param; + } + + vf = &(pf->vf[vf_id]); + /* first vsi is always the LAN vsi */ + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) { + dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id); + ret = -EINVAL; + goto error_param; + } + + ivi->vf = vf_id; + + memcpy(&ivi->mac, vf->default_lan_addr.addr, ETH_ALEN); + + ivi->max_tx_rate = vf->tx_rate; + ivi->min_tx_rate = 0; + ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK; + ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >> + I40E_VLAN_PRIORITY_SHIFT; + if (vf->link_forced == false) + ivi->linkstate = IFLA_VF_LINK_STATE_AUTO; + else if (vf->link_up == true) + ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE; + else + ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE; + ivi->spoofchk = vf->spoofchk; + ret = 0; + +error_param: + return ret; +} + +/** + * i40e_ndo_set_vf_link_state + * @netdev: network interface device structure + * @vf_id: VF identifier + * @link: required link state + * + * Set the link state of a specified VF, regardless of physical link state + **/ +int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_virtchnl_pf_event pfe; + struct i40e_hw *hw = &pf->hw; + struct i40e_vf *vf; + int abs_vf_id; + int ret = 0; + + /* validate the request */ + if (vf_id >= pf->num_alloc_vfs) { + dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); + ret = -EINVAL; + goto error_out; + } + + vf = &pf->vf[vf_id]; + abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id; + + pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE; + pfe.severity = I40E_PF_EVENT_SEVERITY_INFO; + + switch (link) { + case IFLA_VF_LINK_STATE_AUTO: + vf->link_forced = false; + pfe.event_data.link_event.link_status = + pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP; + pfe.event_data.link_event.link_speed = + pf->hw.phy.link_info.link_speed; + break; + case IFLA_VF_LINK_STATE_ENABLE: + vf->link_forced = true; + vf->link_up = true; + pfe.event_data.link_event.link_status = true; + pfe.event_data.link_event.link_speed = I40E_LINK_SPEED_40GB; + break; + case IFLA_VF_LINK_STATE_DISABLE: + vf->link_forced = true; + vf->link_up = false; + pfe.event_data.link_event.link_status = false; + pfe.event_data.link_event.link_speed = 0; + break; + default: + ret = -EINVAL; + goto error_out; + } + /* Notify the VF of its new link state */ + i40e_aq_send_msg_to_vf(hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT, + 0, (u8 *)&pfe, sizeof(pfe), NULL); + +error_out: + return ret; +} + +/** + * i40e_ndo_set_vf_spoofchk + * @netdev: network interface device structure + * @vf_id: VF identifier + * @enable: flag to enable or disable feature + * + * Enable or disable VF spoof checking + **/ +int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_vsi *vsi = np->vsi; + struct i40e_pf *pf = vsi->back; + struct i40e_vsi_context ctxt; + struct i40e_hw *hw = &pf->hw; + struct i40e_vf *vf; + int ret = 0; + + /* validate the request */ + if (vf_id >= pf->num_alloc_vfs) { + dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id); + ret = -EINVAL; + goto out; + } + + vf = &(pf->vf[vf_id]); + + if (enable == vf->spoofchk) + goto out; + + vf->spoofchk = enable; + memset(&ctxt, 0, sizeof(ctxt)); + ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid; + ctxt.pf_num = pf->hw.pf_id; + ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID); + if (enable) + ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK | + I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK); + ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL); + if (ret) { + dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n", + ret); + ret = -EIO; + } +out: + return ret; +} |