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linuxdebug/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c

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// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2013 - 2018 Intel Corporation. */
#include "i40e.h"
/*********************notification routines***********************/
/**
* i40e_vc_vf_broadcast
* @pf: pointer to the PF structure
* @v_opcode: operation code
* @v_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 virtchnl_ops v_opcode,
int 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 + (int)hw->func_caps.vf_base_id;
/* Not all vfs are enabled so skip the ones that are not */
if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
!test_bit(I40E_VF_STATE_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_link_speed2mbps
* converts i40e_aq_link_speed to integer value of Mbps
* @link_speed: the speed to convert
*
* return the speed as direct value of Mbps.
**/
static u32
i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)
{
switch (link_speed) {
case I40E_LINK_SPEED_100MB:
return SPEED_100;
case I40E_LINK_SPEED_1GB:
return SPEED_1000;
case I40E_LINK_SPEED_2_5GB:
return SPEED_2500;
case I40E_LINK_SPEED_5GB:
return SPEED_5000;
case I40E_LINK_SPEED_10GB:
return SPEED_10000;
case I40E_LINK_SPEED_20GB:
return SPEED_20000;
case I40E_LINK_SPEED_25GB:
return SPEED_25000;
case I40E_LINK_SPEED_40GB:
return SPEED_40000;
case I40E_LINK_SPEED_UNKNOWN:
return SPEED_UNKNOWN;
}
return SPEED_UNKNOWN;
}
/**
* i40e_set_vf_link_state
* @vf: pointer to the VF structure
* @pfe: pointer to PF event structure
* @ls: pointer to link status structure
*
* set a link state on a single vf
**/
static void i40e_set_vf_link_state(struct i40e_vf *vf,
struct virtchnl_pf_event *pfe, struct i40e_link_status *ls)
{
u8 link_status = ls->link_info & I40E_AQ_LINK_UP;
if (vf->link_forced)
link_status = vf->link_up;
if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
pfe->event_data.link_event_adv.link_speed = link_status ?
i40e_vc_link_speed2mbps(ls->link_speed) : 0;
pfe->event_data.link_event_adv.link_status = link_status;
} else {
pfe->event_data.link_event.link_speed = link_status ?
i40e_virtchnl_link_speed(ls->link_speed) : 0;
pfe->event_data.link_event.link_status = link_status;
}
}
/**
* i40e_vc_notify_vf_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 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 + (int)hw->func_caps.vf_base_id;
pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
pfe.severity = PF_EVENT_SEVERITY_INFO;
i40e_set_vf_link_state(vf, &pfe, ls);
i40e_aq_send_msg_to_vf(hw, abs_vf_id, 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 virtchnl_pf_event pfe;
pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
(u8 *)&pfe, sizeof(struct 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 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_STATE_INIT, &vf->vf_states) &&
!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
return;
abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
0, (u8 *)&pfe,
sizeof(struct virtchnl_pf_event), NULL);
}
/***********************misc routines*****************************/
/**
* i40e_vc_reset_vf
* @vf: pointer to the VF info
* @notify_vf: notify vf about reset or not
* Reset VF handler.
**/
static void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf)
{
struct i40e_pf *pf = vf->pf;
int i;
if (notify_vf)
i40e_vc_notify_vf_reset(vf);
/* We want to ensure that an actual reset occurs initiated after this
* function was called. However, we do not want to wait forever, so
* we'll give a reasonable time and print a message if we failed to
* ensure a reset.
*/
for (i = 0; i < 20; i++) {
/* If PF is in VFs releasing state reset VF is impossible,
* so leave it.
*/
if (test_bit(__I40E_VFS_RELEASING, pf->state))
return;
if (i40e_reset_vf(vf, false))
return;
usleep_range(10000, 20000);
}
if (notify_vf)
dev_warn(&vf->pf->pdev->dev,
"Failed to initiate reset for VF %d after 200 milliseconds\n",
vf->vf_id);
else
dev_dbg(&vf->pf->pdev->dev,
"Failed to initiate reset for VF %d after 200 milliseconds\n",
vf->vf_id);
}
/**
* 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,
u16 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, u32 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_get_real_pf_qid
* @vf: pointer to the VF info
* @vsi_id: vsi id
* @queue_id: queue number
*
* wrapper function to get pf_queue_id handling ADq code as well
**/
static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
{
int i;
if (vf->adq_enabled) {
/* Although VF considers all the queues(can be 1 to 16) as its
* own but they may actually belong to different VSIs(up to 4).
* We need to find which queues belongs to which VSI.
*/
for (i = 0; i < vf->num_tc; i++) {
if (queue_id < vf->ch[i].num_qps) {
vsi_id = vf->ch[i].vsi_id;
break;
}
/* find right queue id which is relative to a
* given VSI.
*/
queue_id -= vf->ch[i].num_qps;
}
}
return i40e_vc_get_pf_queue_id(vf, vsi_id, 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 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, size;
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 |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
vsi_queue_id));
}
tempmap = vecmap->txq_map;
for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
vsi_queue_id + 1));
}
size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
next_q = find_first_bit(&linklistmap, size);
if (unlikely(next_q == size))
goto irq_list_done;
vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
pf_queue_id = i40e_get_real_pf_qid(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 < size) {
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, size, next_q + 1);
if (next_q < size) {
vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
pf_queue_id = i40e_get_real_pf_qid(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) |
BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
(itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
wr32(hw, reg_idx, reg);
}
/* if the vf is running in polling mode and using interrupt zero,
* need to disable auto-mask on enabling zero interrupt for VFs.
*/
if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
(vector_id == 0)) {
reg = rd32(hw, I40E_GLINT_CTL);
if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
wr32(hw, I40E_GLINT_CTL, reg);
}
}
irq_list_done:
i40e_flush(hw);
}
/**
* i40e_release_iwarp_qvlist
* @vf: pointer to the VF.
*
**/
static void i40e_release_iwarp_qvlist(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
struct virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info;
u32 msix_vf;
u32 i;
if (!vf->qvlist_info)
return;
msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
for (i = 0; i < qvlist_info->num_vectors; i++) {
struct virtchnl_iwarp_qv_info *qv_info;
u32 next_q_index, next_q_type;
struct i40e_hw *hw = &pf->hw;
u32 v_idx, reg_idx, reg;
qv_info = &qvlist_info->qv_info[i];
if (!qv_info)
continue;
v_idx = qv_info->v_idx;
if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
/* Figure out the queue after CEQ and make that the
* first queue.
*/
reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
>> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
>> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
reg = (next_q_index &
I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
(next_q_type <<
I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
}
}
kfree(vf->qvlist_info);
vf->qvlist_info = NULL;
}
/**
* i40e_config_iwarp_qvlist
* @vf: pointer to the VF info
* @qvlist_info: queue and vector list
*
* Return 0 on success or < 0 on error
**/
static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
struct virtchnl_iwarp_qvlist_info *qvlist_info)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
struct virtchnl_iwarp_qv_info *qv_info;
u32 v_idx, i, reg_idx, reg;
u32 next_q_idx, next_q_type;
u32 msix_vf;
int ret = 0;
msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
if (qvlist_info->num_vectors > msix_vf) {
dev_warn(&pf->pdev->dev,
"Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
qvlist_info->num_vectors,
msix_vf);
ret = -EINVAL;
goto err_out;
}
kfree(vf->qvlist_info);
vf->qvlist_info = kzalloc(struct_size(vf->qvlist_info, qv_info,
qvlist_info->num_vectors - 1),
GFP_KERNEL);
if (!vf->qvlist_info) {
ret = -ENOMEM;
goto err_out;
}
vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
for (i = 0; i < qvlist_info->num_vectors; i++) {
qv_info = &qvlist_info->qv_info[i];
if (!qv_info)
continue;
/* Validate vector id belongs to this vf */
if (!i40e_vc_isvalid_vector_id(vf, qv_info->v_idx)) {
ret = -EINVAL;
goto err_free;
}
v_idx = qv_info->v_idx;
vf->qvlist_info->qv_info[i] = *qv_info;
reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
/* We might be sharing the interrupt, so get the first queue
* index and type, push it down the list by adding the new
* queue on top. Also link it with the new queue in CEQCTL.
*/
reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
(v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
(qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
(next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
(next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
reg = (qv_info->ceq_idx &
I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
(I40E_QUEUE_TYPE_PE_CEQ <<
I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
}
if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
(v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
(qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
}
}
return 0;
err_free:
kfree(vf->qvlist_info);
vf->qvlist_info = NULL;
err_out:
return ret;
}
/**
* 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 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;
if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
ret = -ENOENT;
goto error_context;
}
pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
vsi = i40e_find_vsi_from_id(pf, vsi_id);
if (!vsi) {
ret = -ENOENT;
goto error_context;
}
/* 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 virtchnl_rxq_info *info)
{
u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
struct i40e_hw *hw = &pf->hw;
struct i40e_hmc_obj_rxq rx_ctx;
int ret = 0;
/* 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 split mode 10b */
rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
}
/* 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;
/* if port VLAN is configured increase the max packet size */
if (vsi->info.pvid)
rx_ctx.rxmax += VLAN_HLEN;
/* enable 32bytes desc always */
rx_ctx.dsize = 1;
/* default values */
rx_ctx.lrxqthresh = 1;
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
* @idx: VSI index, applies only for ADq mode, zero otherwise
*
* alloc VF vsi context & resources
**/
static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
{
struct i40e_mac_filter *f = NULL;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi;
u64 max_tx_rate = 0;
int ret = 0;
vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, 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 (!idx) {
u64 hena = i40e_pf_get_default_rss_hena(pf);
u8 broadcast[ETH_ALEN];
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);
spin_lock_bh(&vsi->mac_filter_hash_lock);
if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
f = i40e_add_mac_filter(vsi,
vf->default_lan_addr.addr);
if (!f)
dev_info(&pf->pdev->dev,
"Could not add MAC filter %pM for VF %d\n",
vf->default_lan_addr.addr, vf->vf_id);
}
eth_broadcast_addr(broadcast);
f = i40e_add_mac_filter(vsi, broadcast);
if (!f)
dev_info(&pf->pdev->dev,
"Could not allocate VF broadcast filter\n");
spin_unlock_bh(&vsi->mac_filter_hash_lock);
wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
/* program mac filter only for VF VSI */
ret = i40e_sync_vsi_filters(vsi);
if (ret)
dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
}
/* storing VSI index and id for ADq and don't apply the mac filter */
if (vf->adq_enabled) {
vf->ch[idx].vsi_idx = vsi->idx;
vf->ch[idx].vsi_id = vsi->id;
}
/* Set VF bandwidth if specified */
if (vf->tx_rate) {
max_tx_rate = vf->tx_rate;
} else if (vf->ch[idx].max_tx_rate) {
max_tx_rate = vf->ch[idx].max_tx_rate;
}
if (max_tx_rate) {
max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
max_tx_rate, 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_map_pf_queues_to_vsi
* @vf: pointer to the VF info
*
* PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
* function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
**/
static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
u32 reg, num_tc = 1; /* VF has at least one traffic class */
u16 vsi_id, qps;
int i, j;
if (vf->adq_enabled)
num_tc = vf->num_tc;
for (i = 0; i < num_tc; i++) {
if (vf->adq_enabled) {
qps = vf->ch[i].num_qps;
vsi_id = vf->ch[i].vsi_id;
} else {
qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
vsi_id = vf->lan_vsi_id;
}
for (j = 0; j < 7; j++) {
if (j * 2 >= qps) {
/* end of list */
reg = 0x07FF07FF;
} else {
u16 qid = i40e_vc_get_pf_queue_id(vf,
vsi_id,
j * 2);
reg = qid;
qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
(j * 2) + 1);
reg |= qid << 16;
}
i40e_write_rx_ctl(hw,
I40E_VSILAN_QTABLE(j, vsi_id),
reg);
}
}
}
/**
* i40e_map_pf_to_vf_queues
* @vf: pointer to the VF info
*
* PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
* function takes care of the second part VPLAN_QTABLE & completes VF mappings.
**/
static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
u32 reg, total_qps = 0;
u32 qps, num_tc = 1; /* VF has at least one traffic class */
u16 vsi_id, qid;
int i, j;
if (vf->adq_enabled)
num_tc = vf->num_tc;
for (i = 0; i < num_tc; i++) {
if (vf->adq_enabled) {
qps = vf->ch[i].num_qps;
vsi_id = vf->ch[i].vsi_id;
} else {
qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
vsi_id = vf->lan_vsi_id;
}
for (j = 0; j < qps; j++) {
qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
reg);
total_qps++;
}
}
}
/**
* 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;
/* 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
*/
i40e_write_rx_ctl(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);
i40e_map_pf_to_vf_queues(vf);
i40e_map_pf_queues_to_vsi(vf);
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, j, msix_vf;
/* Start by disabling VF's configuration API to prevent the OS from
* accessing the VF's VSI after it's freed / invalidated.
*/
clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
/* It's possible the VF had requeuested more queues than the default so
* do the accounting here when we're about to free them.
*/
if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
pf->queues_left += vf->num_queue_pairs -
I40E_DEFAULT_QUEUES_PER_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;
}
/* do the accounting and remove additional ADq VSI's */
if (vf->adq_enabled && vf->ch[0].vsi_idx) {
for (j = 0; j < vf->num_tc; j++) {
/* At this point VSI0 is already released so don't
* release it again and only clear their values in
* structure variables
*/
if (j)
i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]);
vf->ch[j].vsi_idx = 0;
vf->ch[j].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 variables keeping track of the resources */
vf->num_queue_pairs = 0;
clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
}
/**
* 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, idx;
if (vf->num_req_queues &&
vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
pf->num_vf_qps = vf->num_req_queues;
else
pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
/* allocate hw vsi context & associated resources */
ret = i40e_alloc_vsi_res(vf, 0);
if (ret)
goto error_alloc;
total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
/* allocate additional VSIs based on tc information for ADq */
if (vf->adq_enabled) {
if (pf->queues_left >=
(I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
/* TC 0 always belongs to VF VSI */
for (idx = 1; idx < vf->num_tc; idx++) {
ret = i40e_alloc_vsi_res(vf, idx);
if (ret)
goto error_alloc;
}
/* send correct number of queues */
total_queue_pairs = I40E_MAX_VF_QUEUES;
} else {
dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
vf->vf_id);
vf->adq_enabled = false;
}
}
/* We account for each VF to get a default number of queue pairs. If
* the VF has now requested more, we need to account for that to make
* certain we never request more queues than we actually have left in
* HW.
*/
if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
pf->queues_left -=
total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
if (vf->trusted)
set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
else
clear_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_STATE_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_getnum_vf_vsi_vlan_filters
* @vsi: pointer to the vsi
*
* called to get the number of VLANs offloaded on this VF
**/
static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
{
struct i40e_mac_filter *f;
u16 num_vlans = 0, bkt;
hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
num_vlans++;
}
return num_vlans;
}
/**
* i40e_getnum_vf_vsi_vlan_filters
* @vsi: pointer to the vsi
*
* wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held
**/
static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
{
int num_vlans;
spin_lock_bh(&vsi->mac_filter_hash_lock);
num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
spin_unlock_bh(&vsi->mac_filter_hash_lock);
return num_vlans;
}
/**
* i40e_get_vlan_list_sync
* @vsi: pointer to the VSI
* @num_vlans: number of VLANs in mac_filter_hash, returned to caller
* @vlan_list: list of VLANs present in mac_filter_hash, returned to caller.
* This array is allocated here, but has to be freed in caller.
*
* Called to get number of VLANs and VLAN list present in mac_filter_hash.
**/
static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans,
s16 **vlan_list)
{
struct i40e_mac_filter *f;
int i = 0;
int bkt;
spin_lock_bh(&vsi->mac_filter_hash_lock);
*num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
*vlan_list = kcalloc(*num_vlans, sizeof(**vlan_list), GFP_ATOMIC);
if (!(*vlan_list))
goto err;
hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
continue;
(*vlan_list)[i++] = f->vlan;
}
err:
spin_unlock_bh(&vsi->mac_filter_hash_lock);
}
/**
* i40e_set_vsi_promisc
* @vf: pointer to the VF struct
* @seid: VSI number
* @multi_enable: set MAC L2 layer multicast promiscuous enable/disable
* for a given VLAN
* @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable
* for a given VLAN
* @vl: List of VLANs - apply filter for given VLANs
* @num_vlans: Number of elements in @vl
**/
static int
i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable,
bool unicast_enable, s16 *vl, u16 num_vlans)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
int aq_ret, aq_tmp = 0;
int i;
/* No VLAN to set promisc on, set on VSI */
if (!num_vlans || !vl) {
aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, seid,
multi_enable,
NULL);
if (aq_ret) {
int aq_err = pf->hw.aq.asq_last_status;
dev_err(&pf->pdev->dev,
"VF %d failed to set multicast promiscuous mode err %d aq_err %s\n",
vf->vf_id,
aq_ret,
i40e_aq_str(&pf->hw, aq_err));
return aq_ret;
}
aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, seid,
unicast_enable,
NULL, true);
if (aq_ret) {
int aq_err = pf->hw.aq.asq_last_status;
dev_err(&pf->pdev->dev,
"VF %d failed to set unicast promiscuous mode err %d aq_err %s\n",
vf->vf_id,
aq_ret,
i40e_aq_str(&pf->hw, aq_err));
}
return aq_ret;
}
for (i = 0; i < num_vlans; i++) {
aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid,
multi_enable,
vl[i], NULL);
if (aq_ret) {
int aq_err = pf->hw.aq.asq_last_status;
dev_err(&pf->pdev->dev,
"VF %d failed to set multicast promiscuous mode err %d aq_err %s\n",
vf->vf_id,
aq_ret,
i40e_aq_str(&pf->hw, aq_err));
if (!aq_tmp)
aq_tmp = aq_ret;
}
aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid,
unicast_enable,
vl[i], NULL);
if (aq_ret) {
int aq_err = pf->hw.aq.asq_last_status;
dev_err(&pf->pdev->dev,
"VF %d failed to set unicast promiscuous mode err %d aq_err %s\n",
vf->vf_id,
aq_ret,
i40e_aq_str(&pf->hw, aq_err));
if (!aq_tmp)
aq_tmp = aq_ret;
}
}
if (aq_tmp)
aq_ret = aq_tmp;
return aq_ret;
}
/**
* i40e_config_vf_promiscuous_mode
* @vf: pointer to the VF info
* @vsi_id: VSI id
* @allmulti: set MAC L2 layer multicast promiscuous enable/disable
* @alluni: set MAC L2 layer unicast promiscuous enable/disable
*
* Called from the VF to configure the promiscuous mode of
* VF vsis and from the VF reset path to reset promiscuous mode.
**/
static int i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
u16 vsi_id,
bool allmulti,
bool alluni)
{
struct i40e_pf *pf = vf->pf;
int aq_ret = I40E_SUCCESS;
struct i40e_vsi *vsi;
u16 num_vlans;
s16 *vl;
vsi = i40e_find_vsi_from_id(pf, vsi_id);
if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi)
return I40E_ERR_PARAM;
if (vf->port_vlan_id) {
aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti,
alluni, &vf->port_vlan_id, 1);
return aq_ret;
} else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
i40e_get_vlan_list_sync(vsi, &num_vlans, &vl);
if (!vl)
return I40E_ERR_NO_MEMORY;
aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
vl, num_vlans);
kfree(vl);
return aq_ret;
}
/* no VLANs to set on, set on VSI */
aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
NULL, 0);
return aq_ret;
}
/**
* i40e_sync_vfr_reset
* @hw: pointer to hw struct
* @vf_id: VF identifier
*
* Before trigger hardware reset, we need to know if no other process has
* reserved the hardware for any reset operations. This check is done by
* examining the status of the RSTAT1 register used to signal the reset.
**/
static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
{
u32 reg;
int i;
for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
I40E_VFINT_ICR0_ADMINQ_MASK;
if (reg)
return 0;
usleep_range(100, 200);
}
return -EAGAIN;
}
/**
* i40e_trigger_vf_reset
* @vf: pointer to the VF structure
* @flr: VFLR was issued or not
*
* Trigger hardware to start a reset for a particular VF. Expects the caller
* to wait the proper amount of time to allow hardware to reset the VF before
* it cleans up and restores VF functionality.
**/
static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
u32 reg, reg_idx, bit_idx;
bool vf_active;
u32 radq;
/* warn the VF */
vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
/* Disable VF's configuration API during reset. The flag is re-enabled
* in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
* It's normally disabled in i40e_free_vf_res(), but it's safer
* to do it earlier to give some time to finish to any VF config
* functions that may still be running at this point.
*/
clear_bit(I40E_VF_STATE_INIT, &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) {
/* Sync VFR reset before trigger next one */
radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
I40E_VFINT_ICR0_ADMINQ_MASK;
if (vf_active && !radq)
/* waiting for finish reset by virtual driver */
if (i40e_sync_vfr_reset(hw, vf->vf_id))
dev_info(&pf->pdev->dev,
"Reset VF %d never finished\n",
vf->vf_id);
/* Reset VF using VPGEN_VFRTRIG reg. It is also setting
* in progress state in rstat1 register.
*/
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);
}
/* clear the VFLR bit in GLGEN_VFLRSTAT */
reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
i40e_flush(hw);
if (i40e_quiesce_vf_pci(vf))
dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
vf->vf_id);
}
/**
* i40e_cleanup_reset_vf
* @vf: pointer to the VF structure
*
* Cleanup a VF after the hardware reset is finished. Expects the caller to
* have verified whether the reset is finished properly, and ensure the
* minimum amount of wait time has passed.
**/
static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
u32 reg;
/* disable promisc modes in case they were enabled */
i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false);
/* free VF resources to begin resetting the VSI state */
i40e_free_vf_res(vf);
/* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
* By doing this we allow HW to access VF memory at any point. If we
* did it any sooner, HW could access memory while it was being freed
* in i40e_free_vf_res(), causing an IOMMU fault.
*
* On the other hand, this needs to be done ASAP, because the VF driver
* is waiting for this to happen and may report a timeout. It's
* harmless, but it gets logged into Guest OS kernel log, so best avoid
* it.
*/
reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
/* reallocate VF resources to finish resetting the VSI state */
if (!i40e_alloc_vf_res(vf)) {
int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
i40e_enable_vf_mappings(vf);
set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
/* Do not notify the client during VF init */
if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
&vf->vf_states))
i40e_notify_client_of_vf_reset(pf, abs_vf_id);
vf->num_vlan = 0;
}
/* Tell the VF driver the reset is done. This needs to be done only
* after VF has been fully initialized, because the VF driver may
* request resources immediately after setting this flag.
*/
wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
}
/**
* i40e_reset_vf
* @vf: pointer to the VF structure
* @flr: VFLR was issued or not
*
* Returns true if the VF is in reset, resets successfully, or resets
* are disabled and false otherwise.
**/
bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
bool rsd = false;
u32 reg;
int i;
if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state))
return true;
/* Bail out if VFs are disabled. */
if (test_bit(__I40E_VF_DISABLE, pf->state))
return true;
/* If VF is being reset already we don't need to continue. */
if (test_and_set_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
return true;
i40e_trigger_vf_reset(vf, flr);
/* 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);
usleep_range(10000, 20000);
/* On initial reset, we don't have any queues to disable */
if (vf->lan_vsi_idx != 0)
i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
i40e_cleanup_reset_vf(vf);
i40e_flush(hw);
usleep_range(20000, 40000);
clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states);
return true;
}
/**
* i40e_reset_all_vfs
* @pf: pointer to the PF structure
* @flr: VFLR was issued or not
*
* Reset all allocated VFs in one go. First, tell the hardware to reset each
* VF, then do all the waiting in one chunk, and finally finish restoring each
* VF after the wait. This is useful during PF routines which need to reset
* all VFs, as otherwise it must perform these resets in a serialized fashion.
*
* Returns true if any VFs were reset, and false otherwise.
**/
bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
{
struct i40e_hw *hw = &pf->hw;
struct i40e_vf *vf;
int i, v;
u32 reg;
/* If we don't have any VFs, then there is nothing to reset */
if (!pf->num_alloc_vfs)
return false;
/* If VFs have been disabled, there is no need to reset */
if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
return false;
/* Begin reset on all VFs at once */
for (v = 0; v < pf->num_alloc_vfs; v++) {
vf = &pf->vf[v];
/* If VF is being reset no need to trigger reset again */
if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
i40e_trigger_vf_reset(&pf->vf[v], flr);
}
/* HW requires some time to make sure it can flush the FIFO for a VF
* when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
* sequence to make sure that it has completed. We'll keep track of
* the VFs using a simple iterator that increments once that VF has
* finished resetting.
*/
for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
usleep_range(10000, 20000);
/* Check each VF in sequence, beginning with the VF to fail
* the previous check.
*/
while (v < pf->num_alloc_vfs) {
vf = &pf->vf[v];
if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) {
reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
break;
}
/* If the current VF has finished resetting, move on
* to the next VF in sequence.
*/
v++;
}
}
if (flr)
usleep_range(10000, 20000);
/* Display a warning if at least one VF didn't manage to reset in
* time, but continue on with the operation.
*/
if (v < pf->num_alloc_vfs)
dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
pf->vf[v].vf_id);
usleep_range(10000, 20000);
/* Begin disabling all the rings associated with VFs, but do not wait
* between each VF.
*/
for (v = 0; v < pf->num_alloc_vfs; v++) {
/* On initial reset, we don't have any queues to disable */
if (pf->vf[v].lan_vsi_idx == 0)
continue;
/* If VF is reset in another thread just continue */
if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
continue;
i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[v].lan_vsi_idx]);
}
/* Now that we've notified HW to disable all of the VF rings, wait
* until they finish.
*/
for (v = 0; v < pf->num_alloc_vfs; v++) {
/* On initial reset, we don't have any queues to disable */
if (pf->vf[v].lan_vsi_idx == 0)
continue;
/* If VF is reset in another thread just continue */
if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
continue;
i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[v].lan_vsi_idx]);
}
/* Hw may need up to 50ms to finish disabling the RX queues. We
* minimize the wait by delaying only once for all VFs.
*/
mdelay(50);
/* Finish the reset on each VF */
for (v = 0; v < pf->num_alloc_vfs; v++) {
/* If VF is reset in another thread just continue */
if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
continue;
i40e_cleanup_reset_vf(&pf->vf[v]);
}
i40e_flush(hw);
usleep_range(20000, 40000);
clear_bit(__I40E_VF_DISABLE, pf->state);
return true;
}
/**
* 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;
set_bit(__I40E_VFS_RELEASING, pf->state);
while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
usleep_range(1000, 2000);
i40e_notify_client_of_vf_enable(pf, 0);
/* 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");
/* Amortize wait time by stopping all VFs at the same time */
for (i = 0; i < pf->num_alloc_vfs; i++) {
if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
continue;
i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
}
for (i = 0; i < pf->num_alloc_vfs; i++) {
if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
continue;
i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
}
/* 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_STATE_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), BIT(bit_idx));
}
}
clear_bit(__I40E_VF_DISABLE, pf->state);
clear_bit(__I40E_VFS_RELEASING, 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) {
pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
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;
set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
}
pf->num_alloc_vfs = num_alloc_vfs;
/* VF resources get allocated during reset */
i40e_reset_all_vfs(pf, false);
i40e_notify_client_of_vf_enable(pf, 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;
if (test_bit(__I40E_TESTING, pf->state)) {
dev_warn(&pdev->dev,
"Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
err = -EPERM;
goto err_out;
}
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) {
dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
num_vfs, pf->num_req_vfs);
err = -EPERM;
goto err_out;
}
dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
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);
int ret = 0;
if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
return -EAGAIN;
}
if (num_vfs) {
if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
}
ret = i40e_pci_sriov_enable(pdev, num_vfs);
goto sriov_configure_out;
}
if (!pci_vfs_assigned(pf->pdev)) {
i40e_free_vfs(pf);
pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
} else {
dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
ret = -EINVAL;
goto sriov_configure_out;
}
sriov_configure_out:
clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
return ret;
}
/***********************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;
int 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;
aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
msg, msglen, NULL);
if (aq_ret) {
dev_info(&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 virtchnl_ops opcode,
int retval)
{
return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
}
/**
* i40e_sync_vf_state
* @vf: pointer to the VF info
* @state: VF state
*
* Called from a VF message to synchronize the service with a potential
* VF reset state
**/
static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state)
{
int i;
/* When handling some messages, it needs VF state to be set.
* It is possible that this flag is cleared during VF reset,
* so there is a need to wait until the end of the reset to
* handle the request message correctly.
*/
for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) {
if (test_bit(state, &vf->vf_states))
return true;
usleep_range(10000, 20000);
}
return test_bit(state, &vf->vf_states);
}
/**
* i40e_vc_get_version_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* called from the VF to request the API version used by the PF
**/
static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_version_info info = {
VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
};
vf->vf_ver = *(struct virtchnl_version_info *)msg;
/* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
if (VF_IS_V10(&vf->vf_ver))
info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
I40E_SUCCESS, (u8 *)&info,
sizeof(struct virtchnl_version_info));
}
/**
* i40e_del_qch - delete all the additional VSIs created as a part of ADq
* @vf: pointer to VF structure
**/
static void i40e_del_qch(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
int i;
/* first element in the array belongs to primary VF VSI and we shouldn't
* delete it. We should however delete the rest of the VSIs created
*/
for (i = 1; i < vf->num_tc; i++) {
if (vf->ch[i].vsi_idx) {
i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
vf->ch[i].vsi_idx = 0;
vf->ch[i].vsi_id = 0;
}
}
}
/**
* i40e_vc_get_max_frame_size
* @vf: pointer to the VF
*
* Max frame size is determined based on the current port's max frame size and
* whether a port VLAN is configured on this VF. The VF is not aware whether
* it's in a port VLAN so the PF needs to account for this in max frame size
* checks and sending the max frame size to the VF.
**/
static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf)
{
u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size;
if (vf->port_vlan_id)
max_frame_size -= VLAN_HLEN;
return max_frame_size;
}
/**
* i40e_vc_get_vf_resources_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* called from the VF to request its resources
**/
static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_vf_resource *vfres = NULL;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi;
int num_vsis = 1;
int aq_ret = 0;
size_t len = 0;
int ret;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
len = struct_size(vfres, vsi_res, num_vsis);
vfres = kzalloc(len, GFP_KERNEL);
if (!vfres) {
aq_ret = I40E_ERR_NO_MEMORY;
len = 0;
goto err;
}
if (VF_IS_V11(&vf->vf_ver))
vf->driver_caps = *(u32 *)msg;
else
vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
VIRTCHNL_VF_OFFLOAD_RSS_REG |
VIRTCHNL_VF_OFFLOAD_VLAN;
vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi->info.pvid)
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
if (i40e_vf_client_capable(pf, vf->vf_id) &&
(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_IWARP)) {
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_IWARP;
set_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
} else {
clear_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
}
if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
} else {
if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
else
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
}
if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
vfres->vf_cap_flags |=
VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
}
if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) &&
(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
if (pf->flags & I40E_FLAG_MFP_ENABLED) {
dev_err(&pf->pdev->dev,
"VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
vf->vf_id);
aq_ret = I40E_ERR_PARAM;
goto err;
}
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
}
if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) {
if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
vfres->vf_cap_flags |=
VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
}
if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
vfres->num_vsis = num_vsis;
vfres->num_queue_pairs = vf->num_queue_pairs;
vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
vfres->max_mtu = i40e_vc_get_max_frame_size(vf);
if (vf->lan_vsi_idx) {
vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
/* VFs only use TC 0 */
vfres->vsi_res[0].qset_handle
= le16_to_cpu(vsi->info.qs_handle[0]);
if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_USO) && !vf->pf_set_mac) {
i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
eth_zero_addr(vf->default_lan_addr.addr);
}
ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
vf->default_lan_addr.addr);
}
set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
err:
/* send the response back to the VF */
ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
aq_ret, (u8 *)vfres, len);
kfree(vfres);
return ret;
}
/**
* i40e_vc_config_promiscuous_mode_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* 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)
{
struct virtchnl_promisc_info *info =
(struct virtchnl_promisc_info *)msg;
struct i40e_pf *pf = vf->pf;
bool allmulti = false;
bool alluni = false;
int aq_ret = 0;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
aq_ret = I40E_ERR_PARAM;
goto err_out;
}
if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
dev_err(&pf->pdev->dev,
"Unprivileged VF %d is attempting to configure promiscuous mode\n",
vf->vf_id);
/* Lie to the VF on purpose, because this is an error we can
* ignore. Unprivileged VF is not a virtual channel error.
*/
aq_ret = 0;
goto err_out;
}
if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
aq_ret = I40E_ERR_PARAM;
goto err_out;
}
if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto err_out;
}
/* Multicast promiscuous handling*/
if (info->flags & FLAG_VF_MULTICAST_PROMISC)
allmulti = true;
if (info->flags & FLAG_VF_UNICAST_PROMISC)
alluni = true;
aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
alluni);
if (aq_ret)
goto err_out;
if (allmulti) {
if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
&vf->vf_states))
dev_info(&pf->pdev->dev,
"VF %d successfully set multicast promiscuous mode\n",
vf->vf_id);
} else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
&vf->vf_states))
dev_info(&pf->pdev->dev,
"VF %d successfully unset multicast promiscuous mode\n",
vf->vf_id);
if (alluni) {
if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
&vf->vf_states))
dev_info(&pf->pdev->dev,
"VF %d successfully set unicast promiscuous mode\n",
vf->vf_id);
} else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
&vf->vf_states))
dev_info(&pf->pdev->dev,
"VF %d successfully unset unicast promiscuous mode\n",
vf->vf_id);
err_out:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf,
VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
aq_ret);
}
/**
* i40e_vc_config_queues_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* called from the VF to configure the rx/tx
* queues
**/
static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_vsi_queue_config_info *qci =
(struct virtchnl_vsi_queue_config_info *)msg;
struct virtchnl_queue_pair_info *qpi;
u16 vsi_id, vsi_queue_id = 0;
struct i40e_pf *pf = vf->pf;
int i, j = 0, idx = 0;
struct i40e_vsi *vsi;
u16 num_qps_all = 0;
int aq_ret = 0;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (vf->adq_enabled) {
for (i = 0; i < vf->num_tc; i++)
num_qps_all += vf->ch[i].num_qps;
if (num_qps_all != qci->num_queue_pairs) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
}
vsi_id = qci->vsi_id;
for (i = 0; i < qci->num_queue_pairs; i++) {
qpi = &qci->qpair[i];
if (!vf->adq_enabled) {
if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
qpi->txq.queue_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
vsi_queue_id = qpi->txq.queue_id;
if (qpi->txq.vsi_id != qci->vsi_id ||
qpi->rxq.vsi_id != qci->vsi_id ||
qpi->rxq.queue_id != vsi_queue_id) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
}
if (vf->adq_enabled) {
if (idx >= ARRAY_SIZE(vf->ch)) {
aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
goto error_param;
}
vsi_id = vf->ch[idx].vsi_id;
}
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;
}
/* For ADq there can be up to 4 VSIs with max 4 queues each.
* VF does not know about these additional VSIs and all
* it cares is about its own queues. PF configures these queues
* to its appropriate VSIs based on TC mapping
*/
if (vf->adq_enabled) {
if (idx >= ARRAY_SIZE(vf->ch)) {
aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
goto error_param;
}
if (j == (vf->ch[idx].num_qps - 1)) {
idx++;
j = 0; /* resetting the queue count */
vsi_queue_id = 0;
} else {
j++;
vsi_queue_id++;
}
}
}
/* set vsi num_queue_pairs in use to num configured by VF */
if (!vf->adq_enabled) {
pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
qci->num_queue_pairs;
} else {
for (i = 0; i < vf->num_tc; i++) {
vsi = pf->vsi[vf->ch[i].vsi_idx];
vsi->num_queue_pairs = vf->ch[i].num_qps;
if (i40e_update_adq_vsi_queues(vsi, i)) {
aq_ret = I40E_ERR_CONFIG;
goto error_param;
}
}
}
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
aq_ret);
}
/**
* i40e_validate_queue_map - check queue map is valid
* @vf: the VF structure pointer
* @vsi_id: vsi id
* @queuemap: Tx or Rx queue map
*
* check if Tx or Rx queue map is valid
**/
static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
unsigned long queuemap)
{
u16 vsi_queue_id, queue_id;
for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
if (vf->adq_enabled) {
vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
} else {
queue_id = vsi_queue_id;
}
if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
return -EINVAL;
}
return 0;
}
/**
* i40e_vc_config_irq_map_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* 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)
{
struct virtchnl_irq_map_info *irqmap_info =
(struct virtchnl_irq_map_info *)msg;
struct virtchnl_vector_map *map;
int aq_ret = 0;
u16 vsi_id;
int i;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (irqmap_info->num_vectors >
vf->pf->hw.func_caps.num_msix_vectors_vf) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < irqmap_info->num_vectors; i++) {
map = &irqmap_info->vecmap[i];
/* validate msg params */
if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
!i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
vsi_id = map->vsi_id;
if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
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, VIRTCHNL_OP_CONFIG_IRQ_MAP,
aq_ret);
}
/**
* i40e_ctrl_vf_tx_rings
* @vsi: the SRIOV VSI being configured
* @q_map: bit map of the queues to be enabled
* @enable: start or stop the queue
**/
static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
bool enable)
{
struct i40e_pf *pf = vsi->back;
int ret = 0;
u16 q_id;
for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
ret = i40e_control_wait_tx_q(vsi->seid, pf,
vsi->base_queue + q_id,
false /*is xdp*/, enable);
if (ret)
break;
}
return ret;
}
/**
* i40e_ctrl_vf_rx_rings
* @vsi: the SRIOV VSI being configured
* @q_map: bit map of the queues to be enabled
* @enable: start or stop the queue
**/
static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
bool enable)
{
struct i40e_pf *pf = vsi->back;
int ret = 0;
u16 q_id;
for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
enable);
if (ret)
break;
}
return ret;
}
/**
* i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
* @vqs: virtchnl_queue_select structure containing bitmaps to validate
*
* Returns true if validation was successful, else false.
*/
static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
{
if ((!vqs->rx_queues && !vqs->tx_queues) ||
vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
return false;
return true;
}
/**
* i40e_vc_enable_queues_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* called from the VF to enable all or specific queue(s)
**/
static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_queue_select *vqs =
(struct virtchnl_queue_select *)msg;
struct i40e_pf *pf = vf->pf;
int aq_ret = 0;
int i;
if (!test_bit(I40E_VF_STATE_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 (!i40e_vc_validate_vqs_bitmaps(vqs)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
/* Use the queue bit map sent by the VF */
if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
true)) {
aq_ret = I40E_ERR_TIMEOUT;
goto error_param;
}
if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
true)) {
aq_ret = I40E_ERR_TIMEOUT;
goto error_param;
}
/* need to start the rings for additional ADq VSI's as well */
if (vf->adq_enabled) {
/* zero belongs to LAN VSI */
for (i = 1; i < vf->num_tc; i++) {
if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
aq_ret = I40E_ERR_TIMEOUT;
}
}
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
aq_ret);
}
/**
* i40e_vc_disable_queues_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* called from the VF to disable all or specific
* queue(s)
**/
static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_queue_select *vqs =
(struct virtchnl_queue_select *)msg;
struct i40e_pf *pf = vf->pf;
int aq_ret = 0;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
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 (!i40e_vc_validate_vqs_bitmaps(vqs)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
/* Use the queue bit map sent by the VF */
if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
false)) {
aq_ret = I40E_ERR_TIMEOUT;
goto error_param;
}
if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
false)) {
aq_ret = I40E_ERR_TIMEOUT;
goto error_param;
}
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
aq_ret);
}
/**
* i40e_check_enough_queue - find big enough queue number
* @vf: pointer to the VF info
* @needed: the number of items needed
*
* Returns the base item index of the queue, or negative for error
**/
static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
{
unsigned int i, cur_queues, more, pool_size;
struct i40e_lump_tracking *pile;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi;
vsi = pf->vsi[vf->lan_vsi_idx];
cur_queues = vsi->alloc_queue_pairs;
/* if current allocated queues are enough for need */
if (cur_queues >= needed)
return vsi->base_queue;
pile = pf->qp_pile;
if (cur_queues > 0) {
/* if the allocated queues are not zero
* just check if there are enough queues for more
* behind the allocated queues.
*/
more = needed - cur_queues;
for (i = vsi->base_queue + cur_queues;
i < pile->num_entries; i++) {
if (pile->list[i] & I40E_PILE_VALID_BIT)
break;
if (more-- == 1)
/* there is enough */
return vsi->base_queue;
}
}
pool_size = 0;
for (i = 0; i < pile->num_entries; i++) {
if (pile->list[i] & I40E_PILE_VALID_BIT) {
pool_size = 0;
continue;
}
if (needed <= ++pool_size)
/* there is enough */
return i;
}
return -ENOMEM;
}
/**
* i40e_vc_request_queues_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* VFs get a default number of queues but can use this message to request a
* different number. If the request is successful, PF will reset the VF and
* return 0. If unsuccessful, PF will send message informing VF of number of
* available queues and return result of sending VF a message.
**/
static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_vf_res_request *vfres =
(struct virtchnl_vf_res_request *)msg;
u16 req_pairs = vfres->num_queue_pairs;
u8 cur_pairs = vf->num_queue_pairs;
struct i40e_pf *pf = vf->pf;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
return -EINVAL;
if (req_pairs > I40E_MAX_VF_QUEUES) {
dev_err(&pf->pdev->dev,
"VF %d tried to request more than %d queues.\n",
vf->vf_id,
I40E_MAX_VF_QUEUES);
vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
} else if (req_pairs - cur_pairs > pf->queues_left) {
dev_warn(&pf->pdev->dev,
"VF %d requested %d more queues, but only %d left.\n",
vf->vf_id,
req_pairs - cur_pairs,
pf->queues_left);
vfres->num_queue_pairs = pf->queues_left + cur_pairs;
} else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
dev_warn(&pf->pdev->dev,
"VF %d requested %d more queues, but there is not enough for it.\n",
vf->vf_id,
req_pairs - cur_pairs);
vfres->num_queue_pairs = cur_pairs;
} else {
/* successful request */
vf->num_req_queues = req_pairs;
i40e_vc_reset_vf(vf, true);
return 0;
}
return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
(u8 *)vfres, sizeof(*vfres));
}
/**
* i40e_vc_get_stats_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* called from the VF to get vsi stats
**/
static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_queue_select *vqs =
(struct virtchnl_queue_select *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_eth_stats stats;
int aq_ret = 0;
struct i40e_vsi *vsi;
memset(&stats, 0, sizeof(struct i40e_eth_stats));
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
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, VIRTCHNL_OP_GET_STATS, aq_ret,
(u8 *)&stats, sizeof(stats));
}
#define I40E_MAX_MACVLAN_PER_HW 3072
#define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW / \
(num_ports))
/* If the VF is not trusted restrict the number of MAC/VLAN it can program
* MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
*/
#define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
#define I40E_VC_MAX_VLAN_PER_VF 16
#define I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(vf_num, num_ports) \
({ typeof(vf_num) vf_num_ = (vf_num); \
typeof(num_ports) num_ports_ = (num_ports); \
((I40E_MAX_MACVLAN_PER_PF(num_ports_) - vf_num_ * \
I40E_VC_MAX_MAC_ADDR_PER_VF) / vf_num_) + \
I40E_VC_MAX_MAC_ADDR_PER_VF; })
/**
* i40e_check_vf_permission
* @vf: pointer to the VF info
* @al: MAC address list from virtchnl
*
* Check that the given list of MAC addresses is allowed. Will return -EPERM
* if any address in the list is not valid. Checks the following conditions:
*
* 1) broadcast and zero addresses are never valid
* 2) unicast addresses are not allowed if the VMM has administratively set
* the VF MAC address, unless the VF is marked as privileged.
* 3) There is enough space to add all the addresses.
*
* Note that to guarantee consistency, it is expected this function be called
* while holding the mac_filter_hash_lock, as otherwise the current number of
* addresses might not be accurate.
**/
static inline int i40e_check_vf_permission(struct i40e_vf *vf,
struct virtchnl_ether_addr_list *al)
{
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
struct i40e_hw *hw = &pf->hw;
int mac2add_cnt = 0;
int i;
for (i = 0; i < al->num_elements; i++) {
struct i40e_mac_filter *f;
u8 *addr = al->list[i].addr;
if (is_broadcast_ether_addr(addr) ||
is_zero_ether_addr(addr)) {
dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
addr);
return I40E_ERR_INVALID_MAC_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.
* Unless the VF is privileged and then it can do whatever.
* The VF may request to set the MAC address filter already
* assigned to it so do not return an error in that case.
*/
if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
!is_multicast_ether_addr(addr) && vf->pf_set_mac &&
!ether_addr_equal(addr, vf->default_lan_addr.addr)) {
dev_err(&pf->pdev->dev,
"VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
return -EPERM;
}
/*count filters that really will be added*/
f = i40e_find_mac(vsi, addr);
if (!f)
++mac2add_cnt;
}
/* If this VF is not privileged, then we can't add more than a limited
* number of addresses. Check to make sure that the additions do not
* push us over the limit.
*/
if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
if ((i40e_count_filters(vsi) + mac2add_cnt) >
I40E_VC_MAX_MAC_ADDR_PER_VF) {
dev_err(&pf->pdev->dev,
"Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
return -EPERM;
}
/* If this VF is trusted, it can use more resources than untrusted.
* However to ensure that every trusted VF has appropriate number of
* resources, divide whole pool of resources per port and then across
* all VFs.
*/
} else {
if ((i40e_count_filters(vsi) + mac2add_cnt) >
I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs,
hw->num_ports)) {
dev_err(&pf->pdev->dev,
"Cannot add more MAC addresses, trusted VF exhausted it's resources\n");
return -EPERM;
}
}
return 0;
}
/**
* i40e_vc_add_mac_addr_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* add guest mac address filter
**/
static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_ether_addr_list *al =
(struct virtchnl_ether_addr_list *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
int ret = 0;
int i;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
!i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
ret = I40E_ERR_PARAM;
goto error_param;
}
vsi = pf->vsi[vf->lan_vsi_idx];
/* Lock once, because all function inside for loop accesses VSI's
* MAC filter list which needs to be protected using same lock.
*/
spin_lock_bh(&vsi->mac_filter_hash_lock);
ret = i40e_check_vf_permission(vf, al);
if (ret) {
spin_unlock_bh(&vsi->mac_filter_hash_lock);
goto error_param;
}
/* 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);
if (!f) {
f = i40e_add_mac_filter(vsi, al->list[i].addr);
if (!f) {
dev_err(&pf->pdev->dev,
"Unable to add MAC filter %pM for VF %d\n",
al->list[i].addr, vf->vf_id);
ret = I40E_ERR_PARAM;
spin_unlock_bh(&vsi->mac_filter_hash_lock);
goto error_param;
}
if (is_valid_ether_addr(al->list[i].addr) &&
is_zero_ether_addr(vf->default_lan_addr.addr))
ether_addr_copy(vf->default_lan_addr.addr,
al->list[i].addr);
}
}
spin_unlock_bh(&vsi->mac_filter_hash_lock);
/* program the updated filter list */
ret = i40e_sync_vsi_filters(vsi);
if (ret)
dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
vf->vf_id, ret);
error_param:
/* send the response to the VF */
return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
ret, NULL, 0);
}
/**
* i40e_vc_del_mac_addr_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* remove guest mac address filter
**/
static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_ether_addr_list *al =
(struct virtchnl_ether_addr_list *)msg;
bool was_unimac_deleted = false;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
int ret = 0;
int i;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
!i40e_vc_isvalid_vsi_id(vf, al->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 MAC addr %pM for VF %d\n",
al->list[i].addr, vf->vf_id);
ret = I40E_ERR_INVALID_MAC_ADDR;
goto error_param;
}
if (ether_addr_equal(al->list[i].addr, vf->default_lan_addr.addr))
was_unimac_deleted = true;
}
vsi = pf->vsi[vf->lan_vsi_idx];
spin_lock_bh(&vsi->mac_filter_hash_lock);
/* delete addresses from the list */
for (i = 0; i < al->num_elements; i++)
if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
ret = I40E_ERR_INVALID_MAC_ADDR;
spin_unlock_bh(&vsi->mac_filter_hash_lock);
goto error_param;
}
spin_unlock_bh(&vsi->mac_filter_hash_lock);
/* program the updated filter list */
ret = i40e_sync_vsi_filters(vsi);
if (ret)
dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
vf->vf_id, ret);
if (vf->trusted && was_unimac_deleted) {
struct i40e_mac_filter *f;
struct hlist_node *h;
u8 *macaddr = NULL;
int bkt;
/* set last unicast mac address as default */
spin_lock_bh(&vsi->mac_filter_hash_lock);
hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
if (is_valid_ether_addr(f->macaddr))
macaddr = f->macaddr;
}
if (macaddr)
ether_addr_copy(vf->default_lan_addr.addr, macaddr);
spin_unlock_bh(&vsi->mac_filter_hash_lock);
}
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
}
/**
* i40e_vc_add_vlan_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* program guest vlan id
**/
static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_vlan_filter_list *vfl =
(struct virtchnl_vlan_filter_list *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
int aq_ret = 0;
int i;
if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
dev_err(&pf->pdev->dev,
"VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
goto error_param;
}
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
!i40e_vc_isvalid_vsi_id(vf, vfl->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)
vf->num_vlan++;
if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
true,
vfl->vlan_id[i],
NULL);
if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
true,
vfl->vlan_id[i],
NULL);
if (ret)
dev_err(&pf->pdev->dev,
"Unable to add VLAN filter %d for VF %d, error %d\n",
vfl->vlan_id[i], vf->vf_id, ret);
}
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
}
/**
* i40e_vc_remove_vlan_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* remove programmed guest vlan id
**/
static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_vlan_filter_list *vfl =
(struct virtchnl_vlan_filter_list *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
int aq_ret = 0;
int i;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
!i40e_vc_isvalid_vsi_id(vf, vfl->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) {
if (vfl->num_elements > 1 || vfl->vlan_id[0])
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < vfl->num_elements; i++) {
i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
vf->num_vlan--;
if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
false,
vfl->vlan_id[i],
NULL);
if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
false,
vfl->vlan_id[i],
NULL);
}
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
}
/**
* i40e_vc_iwarp_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the VF for the iwarp msgs
**/
static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct i40e_pf *pf = vf->pf;
int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
int aq_ret = 0;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
!test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
msg, msglen);
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_IWARP,
aq_ret);
}
/**
* i40e_vc_iwarp_qvmap_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
* @config: config qvmap or release it
*
* called from the VF for the iwarp msgs
**/
static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
{
struct virtchnl_iwarp_qvlist_info *qvlist_info =
(struct virtchnl_iwarp_qvlist_info *)msg;
int aq_ret = 0;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
!test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (config) {
if (i40e_config_iwarp_qvlist(vf, qvlist_info))
aq_ret = I40E_ERR_PARAM;
} else {
i40e_release_iwarp_qvlist(vf);
}
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf,
config ? VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP :
VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP,
aq_ret);
}
/**
* i40e_vc_config_rss_key
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* Configure the VF's RSS key
**/
static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_rss_key *vrk =
(struct virtchnl_rss_key *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
int aq_ret = 0;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
!i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
vsi = pf->vsi[vf->lan_vsi_idx];
aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
err:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
aq_ret);
}
/**
* i40e_vc_config_rss_lut
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* Configure the VF's RSS LUT
**/
static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_rss_lut *vrl =
(struct virtchnl_rss_lut *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
int aq_ret = 0;
u16 i;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
!i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
for (i = 0; i < vrl->lut_entries; i++)
if (vrl->lut[i] >= vf->num_queue_pairs) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
vsi = pf->vsi[vf->lan_vsi_idx];
aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
/* send the response to the VF */
err:
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
aq_ret);
}
/**
* i40e_vc_get_rss_hena
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* Return the RSS HENA bits allowed by the hardware
**/
static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_rss_hena *vrh = NULL;
struct i40e_pf *pf = vf->pf;
int aq_ret = 0;
int len = 0;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
len = sizeof(struct virtchnl_rss_hena);
vrh = kzalloc(len, GFP_KERNEL);
if (!vrh) {
aq_ret = I40E_ERR_NO_MEMORY;
len = 0;
goto err;
}
vrh->hena = i40e_pf_get_default_rss_hena(pf);
err:
/* send the response back to the VF */
aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
aq_ret, (u8 *)vrh, len);
kfree(vrh);
return aq_ret;
}
/**
* i40e_vc_set_rss_hena
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* Set the RSS HENA bits for the VF
**/
static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_rss_hena *vrh =
(struct virtchnl_rss_hena *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
int aq_ret = 0;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
(u32)(vrh->hena >> 32));
/* send the response to the VF */
err:
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
}
/**
* i40e_vc_enable_vlan_stripping
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* Enable vlan header stripping for the VF
**/
static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
{
struct i40e_vsi *vsi;
int aq_ret = 0;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
vsi = vf->pf->vsi[vf->lan_vsi_idx];
i40e_vlan_stripping_enable(vsi);
/* send the response to the VF */
err:
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
aq_ret);
}
/**
* i40e_vc_disable_vlan_stripping
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* Disable vlan header stripping for the VF
**/
static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
{
struct i40e_vsi *vsi;
int aq_ret = 0;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
vsi = vf->pf->vsi[vf->lan_vsi_idx];
i40e_vlan_stripping_disable(vsi);
/* send the response to the VF */
err:
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
aq_ret);
}
/**
* i40e_validate_cloud_filter
* @vf: pointer to VF structure
* @tc_filter: pointer to filter requested
*
* This function validates cloud filter programmed as TC filter for ADq
**/
static int i40e_validate_cloud_filter(struct i40e_vf *vf,
struct virtchnl_filter *tc_filter)
{
struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
struct i40e_mac_filter *f;
struct hlist_node *h;
bool found = false;
int bkt;
if (!tc_filter->action) {
dev_info(&pf->pdev->dev,
"VF %d: Currently ADq doesn't support Drop Action\n",
vf->vf_id);
goto err;
}
/* action_meta is TC number here to which the filter is applied */
if (!tc_filter->action_meta ||
tc_filter->action_meta > I40E_MAX_VF_VSI) {
dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
vf->vf_id, tc_filter->action_meta);
goto err;
}
/* Check filter if it's programmed for advanced mode or basic mode.
* There are two ADq modes (for VF only),
* 1. Basic mode: intended to allow as many filter options as possible
* to be added to a VF in Non-trusted mode. Main goal is
* to add filters to its own MAC and VLAN id.
* 2. Advanced mode: is for allowing filters to be applied other than
* its own MAC or VLAN. This mode requires the VF to be
* Trusted.
*/
if (mask.dst_mac[0] && !mask.dst_ip[0]) {
vsi = pf->vsi[vf->lan_vsi_idx];
f = i40e_find_mac(vsi, data.dst_mac);
if (!f) {
dev_info(&pf->pdev->dev,
"Destination MAC %pM doesn't belong to VF %d\n",
data.dst_mac, vf->vf_id);
goto err;
}
if (mask.vlan_id) {
hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
hlist) {
if (f->vlan == ntohs(data.vlan_id)) {
found = true;
break;
}
}
if (!found) {
dev_info(&pf->pdev->dev,
"VF %d doesn't have any VLAN id %u\n",
vf->vf_id, ntohs(data.vlan_id));
goto err;
}
}
} else {
/* Check if VF is trusted */
if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
dev_err(&pf->pdev->dev,
"VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
vf->vf_id);
return I40E_ERR_CONFIG;
}
}
if (mask.dst_mac[0] & data.dst_mac[0]) {
if (is_broadcast_ether_addr(data.dst_mac) ||
is_zero_ether_addr(data.dst_mac)) {
dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
vf->vf_id, data.dst_mac);
goto err;
}
}
if (mask.src_mac[0] & data.src_mac[0]) {
if (is_broadcast_ether_addr(data.src_mac) ||
is_zero_ether_addr(data.src_mac)) {
dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
vf->vf_id, data.src_mac);
goto err;
}
}
if (mask.dst_port & data.dst_port) {
if (!data.dst_port) {
dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
vf->vf_id);
goto err;
}
}
if (mask.src_port & data.src_port) {
if (!data.src_port) {
dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
vf->vf_id);
goto err;
}
}
if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
vf->vf_id);
goto err;
}
if (mask.vlan_id & data.vlan_id) {
if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
vf->vf_id);
goto err;
}
}
return I40E_SUCCESS;
err:
return I40E_ERR_CONFIG;
}
/**
* i40e_find_vsi_from_seid - searches for the vsi with the given seid
* @vf: pointer to the VF info
* @seid: seid of the vsi it is searching for
**/
static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
{
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
int i;
for (i = 0; i < vf->num_tc ; i++) {
vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
if (vsi && vsi->seid == seid)
return vsi;
}
return NULL;
}
/**
* i40e_del_all_cloud_filters
* @vf: pointer to the VF info
*
* This function deletes all cloud filters
**/
static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
{
struct i40e_cloud_filter *cfilter = NULL;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
struct hlist_node *node;
int ret;
hlist_for_each_entry_safe(cfilter, node,
&vf->cloud_filter_list, cloud_node) {
vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
if (!vsi) {
dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
vf->vf_id, cfilter->seid);
continue;
}
if (cfilter->dst_port)
ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
false);
else
ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
if (ret)
dev_err(&pf->pdev->dev,
"VF %d: Failed to delete cloud filter, err %d aq_err %s\n",
vf->vf_id, ret,
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
hlist_del(&cfilter->cloud_node);
kfree(cfilter);
vf->num_cloud_filters--;
}
}
/**
* i40e_vc_del_cloud_filter
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* This function deletes a cloud filter programmed as TC filter for ADq
**/
static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
struct i40e_cloud_filter cfilter, *cf = NULL;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
struct hlist_node *node;
int aq_ret = 0;
int i, ret;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
if (!vf->adq_enabled) {
dev_info(&pf->pdev->dev,
"VF %d: ADq not enabled, can't apply cloud filter\n",
vf->vf_id);
aq_ret = I40E_ERR_PARAM;
goto err;
}
if (i40e_validate_cloud_filter(vf, vcf)) {
dev_info(&pf->pdev->dev,
"VF %d: Invalid input, can't apply cloud filter\n",
vf->vf_id);
aq_ret = I40E_ERR_PARAM;
goto err;
}
memset(&cfilter, 0, sizeof(cfilter));
/* parse destination mac address */
for (i = 0; i < ETH_ALEN; i++)
cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
/* parse source mac address */
for (i = 0; i < ETH_ALEN; i++)
cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
cfilter.dst_port = mask.dst_port & tcf.dst_port;
cfilter.src_port = mask.src_port & tcf.src_port;
switch (vcf->flow_type) {
case VIRTCHNL_TCP_V4_FLOW:
cfilter.n_proto = ETH_P_IP;
if (mask.dst_ip[0] & tcf.dst_ip[0])
memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
ARRAY_SIZE(tcf.dst_ip));
else if (mask.src_ip[0] & tcf.dst_ip[0])
memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
ARRAY_SIZE(tcf.dst_ip));
break;
case VIRTCHNL_TCP_V6_FLOW:
cfilter.n_proto = ETH_P_IPV6;
if (mask.dst_ip[3] & tcf.dst_ip[3])
memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
sizeof(cfilter.ip.v6.dst_ip6));
if (mask.src_ip[3] & tcf.src_ip[3])
memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
sizeof(cfilter.ip.v6.src_ip6));
break;
default:
/* TC filter can be configured based on different combinations
* and in this case IP is not a part of filter config
*/
dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
vf->vf_id);
}
/* get the vsi to which the tc belongs to */
vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
cfilter.seid = vsi->seid;
cfilter.flags = vcf->field_flags;
/* Deleting TC filter */
if (tcf.dst_port)
ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
else
ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
if (ret) {
dev_err(&pf->pdev->dev,
"VF %d: Failed to delete cloud filter, err %d aq_err %s\n",
vf->vf_id, ret,
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
goto err;
}
hlist_for_each_entry_safe(cf, node,
&vf->cloud_filter_list, cloud_node) {
if (cf->seid != cfilter.seid)
continue;
if (mask.dst_port)
if (cfilter.dst_port != cf->dst_port)
continue;
if (mask.dst_mac[0])
if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
continue;
/* for ipv4 data to be valid, only first byte of mask is set */
if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
ARRAY_SIZE(tcf.dst_ip)))
continue;
/* for ipv6, mask is set for all sixteen bytes (4 words) */
if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
sizeof(cfilter.ip.v6.src_ip6)))
continue;
if (mask.vlan_id)
if (cfilter.vlan_id != cf->vlan_id)
continue;
hlist_del(&cf->cloud_node);
kfree(cf);
vf->num_cloud_filters--;
}
err:
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
aq_ret);
}
/**
* i40e_vc_add_cloud_filter
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* This function adds a cloud filter programmed as TC filter for ADq
**/
static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
struct i40e_cloud_filter *cfilter = NULL;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
int aq_ret = 0;
int i, ret;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
aq_ret = I40E_ERR_PARAM;
goto err_out;
}
if (!vf->adq_enabled) {
dev_info(&pf->pdev->dev,
"VF %d: ADq is not enabled, can't apply cloud filter\n",
vf->vf_id);
aq_ret = I40E_ERR_PARAM;
goto err_out;
}
if (i40e_validate_cloud_filter(vf, vcf)) {
dev_info(&pf->pdev->dev,
"VF %d: Invalid input/s, can't apply cloud filter\n",
vf->vf_id);
aq_ret = I40E_ERR_PARAM;
goto err_out;
}
cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
if (!cfilter)
return -ENOMEM;
/* parse destination mac address */
for (i = 0; i < ETH_ALEN; i++)
cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
/* parse source mac address */
for (i = 0; i < ETH_ALEN; i++)
cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
cfilter->dst_port = mask.dst_port & tcf.dst_port;
cfilter->src_port = mask.src_port & tcf.src_port;
switch (vcf->flow_type) {
case VIRTCHNL_TCP_V4_FLOW:
cfilter->n_proto = ETH_P_IP;
if (mask.dst_ip[0] & tcf.dst_ip[0])
memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
ARRAY_SIZE(tcf.dst_ip));
else if (mask.src_ip[0] & tcf.dst_ip[0])
memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
ARRAY_SIZE(tcf.dst_ip));
break;
case VIRTCHNL_TCP_V6_FLOW:
cfilter->n_proto = ETH_P_IPV6;
if (mask.dst_ip[3] & tcf.dst_ip[3])
memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
sizeof(cfilter->ip.v6.dst_ip6));
if (mask.src_ip[3] & tcf.src_ip[3])
memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
sizeof(cfilter->ip.v6.src_ip6));
break;
default:
/* TC filter can be configured based on different combinations
* and in this case IP is not a part of filter config
*/
dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
vf->vf_id);
}
/* get the VSI to which the TC belongs to */
vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
cfilter->seid = vsi->seid;
cfilter->flags = vcf->field_flags;
/* Adding cloud filter programmed as TC filter */
if (tcf.dst_port)
ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
else
ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
if (ret) {
dev_err(&pf->pdev->dev,
"VF %d: Failed to add cloud filter, err %d aq_err %s\n",
vf->vf_id, ret,
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
goto err_free;
}
INIT_HLIST_NODE(&cfilter->cloud_node);
hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
/* release the pointer passing it to the collection */
cfilter = NULL;
vf->num_cloud_filters++;
err_free:
kfree(cfilter);
err_out:
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
aq_ret);
}
/**
* i40e_vc_add_qch_msg: Add queue channel and enable ADq
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
**/
static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_tc_info *tci =
(struct virtchnl_tc_info *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_link_status *ls = &pf->hw.phy.link_info;
int i, adq_request_qps = 0;
int aq_ret = 0;
u64 speed = 0;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
/* ADq cannot be applied if spoof check is ON */
if (vf->spoofchk) {
dev_err(&pf->pdev->dev,
"Spoof check is ON, turn it OFF to enable ADq\n");
aq_ret = I40E_ERR_PARAM;
goto err;
}
if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
dev_err(&pf->pdev->dev,
"VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
vf->vf_id);
aq_ret = I40E_ERR_PARAM;
goto err;
}
/* max number of traffic classes for VF currently capped at 4 */
if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
dev_err(&pf->pdev->dev,
"VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
aq_ret = I40E_ERR_PARAM;
goto err;
}
/* validate queues for each TC */
for (i = 0; i < tci->num_tc; i++)
if (!tci->list[i].count ||
tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
dev_err(&pf->pdev->dev,
"VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
vf->vf_id, i, tci->list[i].count,
I40E_DEFAULT_QUEUES_PER_VF);
aq_ret = I40E_ERR_PARAM;
goto err;
}
/* need Max VF queues but already have default number of queues */
adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
if (pf->queues_left < adq_request_qps) {
dev_err(&pf->pdev->dev,
"No queues left to allocate to VF %d\n",
vf->vf_id);
aq_ret = I40E_ERR_PARAM;
goto err;
} else {
/* we need to allocate max VF queues to enable ADq so as to
* make sure ADq enabled VF always gets back queues when it
* goes through a reset.
*/
vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
}
/* get link speed in MB to validate rate limit */
speed = i40e_vc_link_speed2mbps(ls->link_speed);
if (speed == SPEED_UNKNOWN) {
dev_err(&pf->pdev->dev,
"Cannot detect link speed\n");
aq_ret = I40E_ERR_PARAM;
goto err;
}
/* parse data from the queue channel info */
vf->num_tc = tci->num_tc;
for (i = 0; i < vf->num_tc; i++) {
if (tci->list[i].max_tx_rate) {
if (tci->list[i].max_tx_rate > speed) {
dev_err(&pf->pdev->dev,
"Invalid max tx rate %llu specified for VF %d.",
tci->list[i].max_tx_rate,
vf->vf_id);
aq_ret = I40E_ERR_PARAM;
goto err;
} else {
vf->ch[i].max_tx_rate =
tci->list[i].max_tx_rate;
}
}
vf->ch[i].num_qps = tci->list[i].count;
}
/* set this flag only after making sure all inputs are sane */
vf->adq_enabled = true;
/* reset the VF in order to allocate resources */
i40e_vc_reset_vf(vf, true);
return I40E_SUCCESS;
/* send the response to the VF */
err:
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
aq_ret);
}
/**
* i40e_vc_del_qch_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
**/
static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
{
struct i40e_pf *pf = vf->pf;
int aq_ret = 0;
if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
if (vf->adq_enabled) {
i40e_del_all_cloud_filters(vf);
i40e_del_qch(vf);
vf->adq_enabled = false;
vf->num_tc = 0;
dev_info(&pf->pdev->dev,
"Deleting Queue Channels and cloud filters for ADq on VF %d\n",
vf->vf_id);
} else {
dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
vf->vf_id);
aq_ret = I40E_ERR_PARAM;
}
/* reset the VF in order to allocate resources */
i40e_vc_reset_vf(vf, true);
return I40E_SUCCESS;
err:
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
aq_ret);
}
/**
* i40e_vc_process_vf_msg
* @pf: pointer to the PF structure
* @vf_id: source VF id
* @v_opcode: operation code
* @v_retval: unused return value code
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the common aeq/arq handler to
* process request from VF
**/
int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
u32 __always_unused v_retval, u8 *msg, u16 msglen)
{
struct i40e_hw *hw = &pf->hw;
int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
struct i40e_vf *vf;
int ret;
pf->vf_aq_requests++;
if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
return -EINVAL;
vf = &(pf->vf[local_vf_id]);
/* Check if VF is disabled. */
if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
return I40E_ERR_PARAM;
/* perform basic checks on the msg */
ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
if (ret) {
i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
local_vf_id, v_opcode, msglen);
switch (ret) {
case VIRTCHNL_STATUS_ERR_PARAM:
return -EPERM;
default:
return -EINVAL;
}
}
switch (v_opcode) {
case VIRTCHNL_OP_VERSION:
ret = i40e_vc_get_version_msg(vf, msg);
break;
case VIRTCHNL_OP_GET_VF_RESOURCES:
ret = i40e_vc_get_vf_resources_msg(vf, msg);
i40e_vc_notify_vf_link_state(vf);
break;
case VIRTCHNL_OP_RESET_VF:
i40e_vc_reset_vf(vf, false);
ret = 0;
break;
case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
break;
case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
ret = i40e_vc_config_queues_msg(vf, msg);
break;
case VIRTCHNL_OP_CONFIG_IRQ_MAP:
ret = i40e_vc_config_irq_map_msg(vf, msg);
break;
case VIRTCHNL_OP_ENABLE_QUEUES:
ret = i40e_vc_enable_queues_msg(vf, msg);
i40e_vc_notify_vf_link_state(vf);
break;
case VIRTCHNL_OP_DISABLE_QUEUES:
ret = i40e_vc_disable_queues_msg(vf, msg);
break;
case VIRTCHNL_OP_ADD_ETH_ADDR:
ret = i40e_vc_add_mac_addr_msg(vf, msg);
break;
case VIRTCHNL_OP_DEL_ETH_ADDR:
ret = i40e_vc_del_mac_addr_msg(vf, msg);
break;
case VIRTCHNL_OP_ADD_VLAN:
ret = i40e_vc_add_vlan_msg(vf, msg);
break;
case VIRTCHNL_OP_DEL_VLAN:
ret = i40e_vc_remove_vlan_msg(vf, msg);
break;
case VIRTCHNL_OP_GET_STATS:
ret = i40e_vc_get_stats_msg(vf, msg);
break;
case VIRTCHNL_OP_IWARP:
ret = i40e_vc_iwarp_msg(vf, msg, msglen);
break;
case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
ret = i40e_vc_iwarp_qvmap_msg(vf, msg, true);
break;
case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
ret = i40e_vc_iwarp_qvmap_msg(vf, msg, false);
break;
case VIRTCHNL_OP_CONFIG_RSS_KEY:
ret = i40e_vc_config_rss_key(vf, msg);
break;
case VIRTCHNL_OP_CONFIG_RSS_LUT:
ret = i40e_vc_config_rss_lut(vf, msg);
break;
case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
ret = i40e_vc_get_rss_hena(vf, msg);
break;
case VIRTCHNL_OP_SET_RSS_HENA:
ret = i40e_vc_set_rss_hena(vf, msg);
break;
case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
ret = i40e_vc_enable_vlan_stripping(vf, msg);
break;
case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
ret = i40e_vc_disable_vlan_stripping(vf, msg);
break;
case VIRTCHNL_OP_REQUEST_QUEUES:
ret = i40e_vc_request_queues_msg(vf, msg);
break;
case VIRTCHNL_OP_ENABLE_CHANNELS:
ret = i40e_vc_add_qch_msg(vf, msg);
break;
case VIRTCHNL_OP_DISABLE_CHANNELS:
ret = i40e_vc_del_qch_msg(vf, msg);
break;
case VIRTCHNL_OP_ADD_CLOUD_FILTER:
ret = i40e_vc_add_cloud_filter(vf, msg);
break;
case VIRTCHNL_OP_DEL_CLOUD_FILTER:
ret = i40e_vc_del_cloud_filter(vf, msg);
break;
case 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)
{
struct i40e_hw *hw = &pf->hw;
u32 reg, reg_idx, bit_idx;
struct i40e_vf *vf;
int vf_id;
if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
return 0;
/* Re-enable the VFLR interrupt cause here, before looking for which
* VF got reset. Otherwise, if another VF gets a reset while the
* first one is being processed, that interrupt will be lost, and
* that VF will be stuck in reset forever.
*/
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 & BIT(bit_idx))
/* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
i40e_reset_vf(vf, true);
}
return 0;
}
/**
* i40e_validate_vf
* @pf: the physical function
* @vf_id: VF identifier
*
* Check that the VF is enabled and the VSI exists.
*
* Returns 0 on success, negative on failure
**/
static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
{
struct i40e_vsi *vsi;
struct i40e_vf *vf;
int ret = 0;
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev,
"Invalid VF Identifier %d\n", vf_id);
ret = -EINVAL;
goto err_out;
}
vf = &pf->vf[vf_id];
vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
if (!vsi)
ret = -EINVAL;
err_out:
return ret;
}
/**
* 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;
struct hlist_node *h;
int bkt;
u8 i;
if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
return -EAGAIN;
}
/* validate the request */
ret = i40e_validate_vf(pf, vf_id);
if (ret)
goto error_param;
vf = &pf->vf[vf_id];
/* When the VF is resetting wait until it is done.
* It can take up to 200 milliseconds,
* but wait for up to 300 milliseconds to be safe.
* Acquire the VSI pointer only after the VF has been
* properly initialized.
*/
for (i = 0; i < 15; i++) {
if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
break;
msleep(20);
}
if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
vf_id);
ret = -EAGAIN;
goto error_param;
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (is_multicast_ether_addr(mac)) {
dev_err(&pf->pdev->dev,
"Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
ret = -EINVAL;
goto error_param;
}
/* Lock once because below invoked function add/del_filter requires
* mac_filter_hash_lock to be held
*/
spin_lock_bh(&vsi->mac_filter_hash_lock);
/* delete the temporary mac address */
if (!is_zero_ether_addr(vf->default_lan_addr.addr))
i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
/* Delete all the filters for this VSI - we're going to kill it
* anyway.
*/
hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
__i40e_del_filter(vsi, f);
spin_unlock_bh(&vsi->mac_filter_hash_lock);
/* 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);
if (is_zero_ether_addr(mac)) {
vf->pf_set_mac = false;
dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
} else {
vf->pf_set_mac = true;
dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
mac, vf_id);
}
/* Force the VF interface down so it has to bring up with new MAC
* address
*/
i40e_vc_reset_vf(vf, true);
dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
error_param:
clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
return ret;
}
/**
* i40e_ndo_set_vf_port_vlan
* @netdev: network interface device structure
* @vf_id: VF identifier
* @vlan_id: mac address
* @qos: priority setting
* @vlan_proto: vlan protocol
*
* 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, __be16 vlan_proto)
{
u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
struct i40e_netdev_priv *np = netdev_priv(netdev);
bool allmulti = false, alluni = false;
struct i40e_pf *pf = np->vsi->back;
struct i40e_vsi *vsi;
struct i40e_vf *vf;
int ret = 0;
if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
return -EAGAIN;
}
/* validate the request */
ret = i40e_validate_vf(pf, vf_id);
if (ret)
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;
}
if (vlan_proto != htons(ETH_P_8021Q)) {
dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
ret = -EPROTONOSUPPORT;
goto error_pvid;
}
vf = &pf->vf[vf_id];
vsi = pf->vsi[vf->lan_vsi_idx];
if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
vf_id);
ret = -EAGAIN;
goto error_pvid;
}
if (le16_to_cpu(vsi->info.pvid) == vlanprio)
/* duplicate request, so just return success */
goto error_pvid;
i40e_vlan_stripping_enable(vsi);
i40e_vc_reset_vf(vf, true);
/* During reset the VF got a new VSI, so refresh a pointer. */
vsi = pf->vsi[vf->lan_vsi_idx];
/* Locked once because multiple functions below iterate list */
spin_lock_bh(&vsi->mac_filter_hash_lock);
/* 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) ||
vlanprio != le16_to_cpu(vsi->info.pvid)) &&
vsi->info.pvid) {
ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
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);
spin_unlock_bh(&vsi->mac_filter_hash_lock);
goto error_pvid;
}
}
if (vsi->info.pvid) {
/* remove all filters on the old VLAN */
i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
VLAN_VID_MASK));
}
spin_unlock_bh(&vsi->mac_filter_hash_lock);
/* disable promisc modes in case they were enabled */
ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
allmulti, alluni);
if (ret) {
dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
goto error_pvid;
}
if (vlan_id || qos)
ret = i40e_vsi_add_pvid(vsi, vlanprio);
else
i40e_vsi_remove_pvid(vsi);
spin_lock_bh(&vsi->mac_filter_hash_lock);
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 for each MAC */
ret = i40e_add_vlan_all_mac(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);
spin_unlock_bh(&vsi->mac_filter_hash_lock);
goto error_pvid;
}
/* remove the previously added non-VLAN MAC filters */
i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
}
spin_unlock_bh(&vsi->mac_filter_hash_lock);
if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
alluni = true;
if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
allmulti = true;
/* Schedule the worker thread to take care of applying changes */
i40e_service_event_schedule(vsi->back);
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 = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
if (ret) {
dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
goto error_pvid;
}
ret = 0;
error_pvid:
clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
return ret;
}
/**
* i40e_ndo_set_vf_bw
* @netdev: network interface device structure
* @vf_id: VF identifier
* @min_tx_rate: Minimum Tx rate
* @max_tx_rate: Maximum 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 ret = 0;
if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
return -EAGAIN;
}
/* validate the request */
ret = i40e_validate_vf(pf, vf_id);
if (ret)
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);
ret = -EINVAL;
goto error;
}
vf = &pf->vf[vf_id];
vsi = pf->vsi[vf->lan_vsi_idx];
if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
vf_id);
ret = -EAGAIN;
goto error;
}
ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
if (ret)
goto error;
vf->tx_rate = max_tx_rate;
error:
clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
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;
if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
return -EAGAIN;
}
/* validate the request */
ret = i40e_validate_vf(pf, vf_id);
if (ret)
goto error_param;
vf = &pf->vf[vf_id];
/* first vsi is always the LAN vsi */
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi) {
ret = -ENOENT;
goto error_param;
}
ivi->vf = vf_id;
ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
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;
ivi->trusted = vf->trusted;
ret = 0;
error_param:
clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
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_link_status *ls = &pf->hw.phy.link_info;
struct virtchnl_pf_event pfe;
struct i40e_hw *hw = &pf->hw;
struct i40e_vf *vf;
int abs_vf_id;
int ret = 0;
if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
return -EAGAIN;
}
/* 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 = VIRTCHNL_EVENT_LINK_CHANGE;
pfe.severity = PF_EVENT_SEVERITY_INFO;
switch (link) {
case IFLA_VF_LINK_STATE_AUTO:
vf->link_forced = false;
i40e_set_vf_link_state(vf, &pfe, ls);
break;
case IFLA_VF_LINK_STATE_ENABLE:
vf->link_forced = true;
vf->link_up = true;
i40e_set_vf_link_state(vf, &pfe, ls);
break;
case IFLA_VF_LINK_STATE_DISABLE:
vf->link_forced = true;
vf->link_up = false;
i40e_set_vf_link_state(vf, &pfe, ls);
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, VIRTCHNL_OP_EVENT,
0, (u8 *)&pfe, sizeof(pfe), NULL);
error_out:
clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
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;
if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
return -EAGAIN;
}
/* 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 (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
vf_id);
ret = -EAGAIN;
goto out;
}
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:
clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
return ret;
}
/**
* i40e_ndo_set_vf_trust
* @netdev: network interface device structure of the pf
* @vf_id: VF identifier
* @setting: trust setting
*
* Enable or disable VF trust setting
**/
int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
struct i40e_vf *vf;
int ret = 0;
if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
return -EAGAIN;
}
/* 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;
}
if (pf->flags & I40E_FLAG_MFP_ENABLED) {
dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
ret = -EINVAL;
goto out;
}
vf = &pf->vf[vf_id];
if (setting == vf->trusted)
goto out;
vf->trusted = setting;
/* request PF to sync mac/vlan filters for the VF */
set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
pf->vsi[vf->lan_vsi_idx]->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
i40e_vc_reset_vf(vf, true);
dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
vf_id, setting ? "" : "un");
if (vf->adq_enabled) {
if (!vf->trusted) {
dev_info(&pf->pdev->dev,
"VF %u no longer Trusted, deleting all cloud filters\n",
vf_id);
i40e_del_all_cloud_filters(vf);
}
}
out:
clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
return ret;
}
/**
* i40e_get_vf_stats - populate some stats for the VF
* @netdev: the netdev of the PF
* @vf_id: the host OS identifier (0-127)
* @vf_stats: pointer to the OS memory to be initialized
*/
int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
struct ifla_vf_stats *vf_stats)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
struct i40e_eth_stats *stats;
struct i40e_vsi *vsi;
struct i40e_vf *vf;
/* validate the request */
if (i40e_validate_vf(pf, vf_id))
return -EINVAL;
vf = &pf->vf[vf_id];
if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
return -EBUSY;
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi)
return -EINVAL;
i40e_update_eth_stats(vsi);
stats = &vsi->eth_stats;
memset(vf_stats, 0, sizeof(*vf_stats));
vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
stats->rx_multicast;
vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
stats->tx_multicast;
vf_stats->rx_bytes = stats->rx_bytes;
vf_stats->tx_bytes = stats->tx_bytes;
vf_stats->broadcast = stats->rx_broadcast;
vf_stats->multicast = stats->rx_multicast;
vf_stats->rx_dropped = stats->rx_discards;
vf_stats->tx_dropped = stats->tx_discards;
return 0;
}
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