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chromium / chromiumos / third_party / kernel / 9acdbf036ba70ee01ee1d4f9be3b85f6584f4e91 / . / drivers / net / ethernet / intel / i40e / i40e_virtchnl_pf.c
blob: bdb75232160008ac3a2832807a5aaa7f699c2477 [file] [log] [blame]
/*******************************************************************************
*
* Intel Ethernet Controller XL710 Family Linux Driver
* Copyright(c) 2013 - 2016 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
******************************************************************************/
#include "i40e.h"
/*********************notification routines***********************/
/**
* i40e_vc_vf_broadcast
* @pf: pointer to the PF structure
* @opcode: operation code
* @retval: return value
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* send a message to all VFs on a given PF
**/
static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
enum virtchnl_ops v_opcode,
i40e_status v_retval, u8 *msg,
u16 msglen)
{
struct i40e_hw *hw = &pf->hw;
struct i40e_vf *vf = pf->vf;
int i;
for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
int abs_vf_id = vf->vf_id + (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_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;
if (vf->link_forced) {
pfe.event_data.link_event.link_status = vf->link_up;
pfe.event_data.link_event.link_speed =
(vf->link_up ? I40E_LINK_SPEED_40GB : 0);
} else {
pfe.event_data.link_event.link_status =
ls->link_info & I40E_AQ_LINK_UP;
pfe.event_data.link_event.link_speed =
(enum virtchnl_link_speed)ls->link_speed;
}
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_disable_vf
* @pf: pointer to the PF info
* @vf: pointer to the VF info
*
* Disable the VF through a SW reset
**/
static inline void i40e_vc_disable_vf(struct i40e_pf *pf, struct i40e_vf *vf)
{
i40e_vc_notify_vf_reset(vf);
i40e_reset_vf(vf, false);
}
/**
* i40e_vc_isvalid_vsi_id
* @vf: pointer to the VF info
* @vsi_id: VF relative VSI id
*
* check for the valid VSI id
**/
static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
{
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
return (vsi && (vsi->vf_id == vf->vf_id));
}
/**
* i40e_vc_isvalid_queue_id
* @vf: pointer to the VF info
* @vsi_id: vsi id
* @qid: vsi relative queue id
*
* check for the valid queue id
**/
static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
u8 qid)
{
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
return (vsi && (qid < vsi->alloc_queue_pairs));
}
/**
* i40e_vc_isvalid_vector_id
* @vf: pointer to the VF info
* @vector_id: VF relative vector id
*
* check for the valid vector id
**/
static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id)
{
struct i40e_pf *pf = vf->pf;
return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
}
/***********************vf resource mgmt routines*****************/
/**
* i40e_vc_get_pf_queue_id
* @vf: pointer to the VF info
* @vsi_id: id of VSI as provided by the FW
* @vsi_queue_id: vsi relative queue id
*
* return PF relative queue id
**/
static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
u8 vsi_queue_id)
{
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
if (!vsi)
return pf_queue_id;
if (le16_to_cpu(vsi->info.mapping_flags) &
I40E_AQ_VSI_QUE_MAP_NONCONTIG)
pf_queue_id =
le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
else
pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
vsi_queue_id;
return pf_queue_id;
}
/**
* i40e_config_irq_link_list
* @vf: pointer to the VF info
* @vsi_id: id of VSI as given by the FW
* @vecmap: irq map info
*
* configure irq link list from the map
**/
static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
struct virtchnl_vector_map *vecmap)
{
unsigned long linklistmap = 0, tempmap;
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
u16 vsi_queue_id, pf_queue_id;
enum i40e_queue_type qtype;
u16 next_q, vector_id;
u32 reg, reg_idx;
u16 itr_idx = 0;
vector_id = vecmap->vector_id;
/* setup the head */
if (0 == vector_id)
reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
else
reg_idx = I40E_VPINT_LNKLSTN(
((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
(vector_id - 1));
if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
/* Special case - No queues mapped on this vector */
wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
goto irq_list_done;
}
tempmap = vecmap->rxq_map;
for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
linklistmap |= (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));
}
next_q = find_first_bit(&linklistmap,
(I40E_MAX_VSI_QP *
I40E_VIRTCHNL_SUPPORTED_QTYPES));
vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
wr32(hw, reg_idx, reg);
while (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
switch (qtype) {
case I40E_QUEUE_TYPE_RX:
reg_idx = I40E_QINT_RQCTL(pf_queue_id);
itr_idx = vecmap->rxitr_idx;
break;
case I40E_QUEUE_TYPE_TX:
reg_idx = I40E_QINT_TQCTL(pf_queue_id);
itr_idx = vecmap->txitr_idx;
break;
default:
break;
}
next_q = find_next_bit(&linklistmap,
(I40E_MAX_VSI_QP *
I40E_VIRTCHNL_SUPPORTED_QTYPES),
next_q + 1);
if (next_q <
(I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id,
vsi_queue_id);
} else {
pf_queue_id = I40E_QUEUE_END_OF_LIST;
qtype = 0;
}
/* format for the RQCTL & TQCTL regs is same */
reg = (vector_id) |
(qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
(pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
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, size;
size = sizeof(struct virtchnl_iwarp_qvlist_info) +
(sizeof(struct virtchnl_iwarp_qv_info) *
(qvlist_info->num_vectors - 1));
vf->qvlist_info = kzalloc(size, GFP_KERNEL);
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;
v_idx = qv_info->v_idx;
/* Validate vector id belongs to this vf */
if (!i40e_vc_isvalid_vector_id(vf, v_idx))
goto err;
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:
kfree(vf->qvlist_info);
vf->qvlist_info = NULL;
return -EINVAL;
}
/**
* 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)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
struct i40e_hmc_obj_rxq rx_ctx;
u16 pf_queue_id;
int ret = 0;
pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
/* clear the context structure first */
memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
/* only set the required fields */
rx_ctx.base = info->dma_ring_addr / 128;
rx_ctx.qlen = info->ring_len;
if (info->splithdr_enabled) {
rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
I40E_RX_SPLIT_IP |
I40E_RX_SPLIT_TCP_UDP |
I40E_RX_SPLIT_SCTP;
/* header length validation */
if (info->hdr_size > ((2 * 1024) - 64)) {
ret = -EINVAL;
goto error_param;
}
rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
/* set 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;
/* enable 32bytes desc always */
rx_ctx.dsize = 1;
/* default values */
rx_ctx.lrxqthresh = 2;
rx_ctx.crcstrip = 1;
rx_ctx.prefena = 1;
rx_ctx.l2tsel = 1;
/* clear the context in the HMC */
ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
if (ret) {
dev_err(&pf->pdev->dev,
"Failed to clear VF LAN Rx queue context %d, error: %d\n",
pf_queue_id, ret);
ret = -ENOENT;
goto error_param;
}
/* set the context in the HMC */
ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
if (ret) {
dev_err(&pf->pdev->dev,
"Failed to set VF LAN Rx queue context %d error: %d\n",
pf_queue_id, ret);
ret = -ENOENT;
goto error_param;
}
error_param:
return ret;
}
/**
* i40e_alloc_vsi_res
* @vf: pointer to the VF info
* @type: type of VSI to allocate
*
* alloc VF vsi context & resources
**/
static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type)
{
struct i40e_mac_filter *f = NULL;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi;
int ret = 0;
vsi = i40e_vsi_setup(pf, type, pf->vsi[pf->lan_vsi]->seid, vf->vf_id);
if (!vsi) {
dev_err(&pf->pdev->dev,
"add vsi failed for VF %d, aq_err %d\n",
vf->vf_id, pf->hw.aq.asq_last_status);
ret = -ENOENT;
goto error_alloc_vsi_res;
}
if (type == I40E_VSI_SRIOV) {
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 */
ret = i40e_sync_vsi_filters(vsi);
if (ret)
dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
/* Set VF bandwidth if specified */
if (vf->tx_rate) {
ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
vf->tx_rate / 50, 0, NULL);
if (ret)
dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
vf->vf_id, ret);
}
error_alloc_vsi_res:
return ret;
}
/**
* i40e_enable_vf_mappings
* @vf: pointer to the VF info
*
* enable VF mappings
**/
static void i40e_enable_vf_mappings(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
u32 reg, total_queue_pairs = 0;
int j;
/* Tell the hardware we're using noncontiguous mapping. HW requires
* that VF queues be mapped using this method, even when they are
* contiguous in real life
*/
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);
/* map PF queues to VF queues */
for (j = 0; j < pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; j++) {
u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id, j);
reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
wr32(hw, I40E_VPLAN_QTABLE(total_queue_pairs, vf->vf_id), reg);
total_queue_pairs++;
}
/* map PF queues to VSI */
for (j = 0; j < 7; j++) {
if (j * 2 >= pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs) {
reg = 0x07FF07FF; /* unused */
} else {
u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id,
j * 2);
reg = qid;
qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id,
(j * 2) + 1);
reg |= qid << 16;
}
i40e_write_rx_ctl(hw, I40E_VSILAN_QTABLE(j, vf->lan_vsi_id),
reg);
}
i40e_flush(hw);
}
/**
* i40e_disable_vf_mappings
* @vf: pointer to the VF info
*
* disable VF mappings
**/
static void i40e_disable_vf_mappings(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
int i;
/* disable qp mappings */
wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
for (i = 0; i < I40E_MAX_VSI_QP; i++)
wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
I40E_QUEUE_END_OF_LIST);
i40e_flush(hw);
}
/**
* i40e_free_vf_res
* @vf: pointer to the VF info
*
* free VF resources
**/
static void i40e_free_vf_res(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
u32 reg_idx, reg;
int i, msix_vf;
/* 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);
/* 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;
vf->num_mac = 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;
vf->vf_states = 0;
}
/**
* i40e_alloc_vf_res
* @vf: pointer to the VF info
*
* allocate VF resources
**/
static int i40e_alloc_vf_res(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
int total_queue_pairs = 0;
int ret;
/* allocate hw vsi context & associated resources */
ret = i40e_alloc_vsi_res(vf, I40E_VSI_SRIOV);
if (ret)
goto error_alloc;
total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
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_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;
/* warn the VF */
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) {
/* reset VF using VPGEN_VFRTRIG reg */
reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
i40e_flush(hw);
}
/* 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;
/* 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
*
* reset the VF
**/
void i40e_reset_vf(struct i40e_vf *vf, bool flr)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
bool rsd = false;
u32 reg;
int i;
/* If VFs have been disabled, there is no need to reset */
if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
return;
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);
clear_bit(__I40E_VF_DISABLE, pf->state);
}
/**
* 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.
**/
void 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;
/* If VFs have been disabled, there is no need to reset */
if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
return;
/* Begin reset on all VFs at once */
for (v = 0; v < pf->num_alloc_vfs; v++)
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];
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;
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;
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++)
i40e_cleanup_reset_vf(&pf->vf[v]);
i40e_flush(hw);
clear_bit(__I40E_VF_DISABLE, pf->state);
}
/**
* i40e_free_vfs
* @pf: pointer to the PF structure
*
* free VF resources
**/
void i40e_free_vfs(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
u32 reg_idx, bit_idx;
int i, tmp, vf_id;
if (!pf->vf)
return;
while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
usleep_range(1000, 2000);
i40e_notify_client_of_vf_enable(pf, 0);
/* 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]);
}
/* 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");
/* 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);
}
#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, false);
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);
if (num_vfs) {
if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
i40e_do_reset_safe(pf,
BIT_ULL(__I40E_PF_RESET_REQUESTED));
}
return i40e_pci_sriov_enable(pdev, num_vfs);
}
if (!pci_vfs_assigned(pf->pdev)) {
i40e_free_vfs(pf);
pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
i40e_do_reset_safe(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
} else {
dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
return -EINVAL;
}
return 0;
}
/***********************virtual channel routines******************/
/**
* i40e_vc_send_msg_to_vf
* @vf: pointer to the VF info
* @v_opcode: virtual channel opcode
* @v_retval: virtual channel return value
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* send msg to VF
**/
static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
u32 v_retval, u8 *msg, u16 msglen)
{
struct i40e_pf *pf;
struct i40e_hw *hw;
int abs_vf_id;
i40e_status aq_ret;
/* validate the request */
if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
return -EINVAL;
pf = vf->pf;
hw = &pf->hw;
abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
/* single place to detect unsuccessful return values */
if (v_retval) {
vf->num_invalid_msgs++;
dev_info(&pf->pdev->dev, "VF %d failed opcode %d, retval: %d\n",
vf->vf_id, v_opcode, v_retval);
if (vf->num_invalid_msgs >
I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) {
dev_err(&pf->pdev->dev,
"Number of invalid messages exceeded for VF %d\n",
vf->vf_id);
dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
}
} else {
vf->num_valid_msgs++;
/* reset the invalid counter, if a valid message is received. */
vf->num_invalid_msgs = 0;
}
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,
i40e_status retval)
{
return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
}
/**
* i40e_vc_get_version_msg
* @vf: pointer to the VF info
*
* called from the VF to request the API version used by the PF
**/
static int i40e_vc_get_version_msg(struct i40e_vf *vf, 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_vc_get_vf_resources_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the VF to request its resources
**/
static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
{
struct virtchnl_vf_resource *vfres = NULL;
struct i40e_pf *pf = vf->pf;
i40e_status aq_ret = 0;
struct i40e_vsi *vsi;
int num_vsis = 1;
int len = 0;
int ret;
if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
len = (sizeof(struct virtchnl_vf_resource) +
sizeof(struct virtchnl_vsi_resource) * 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;
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);
}
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;
}
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;
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]);
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_reset_vf_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the VF to reset itself,
* unlike other virtchnl messages, PF driver
* doesn't send the response back to the VF
**/
static void i40e_vc_reset_vf_msg(struct i40e_vf *vf)
{
if (test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
i40e_reset_vf(vf, false);
}
/**
* i40e_getnum_vf_vsi_vlan_filters
* @vsi: pointer to the vsi
*
* called to get the number of VLANs offloaded on this VF
**/
static inline int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
{
struct i40e_mac_filter *f;
int 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_vc_config_promiscuous_mode_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the VF to configure the promiscuous mode of
* VF vsis
**/
static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf,
u8 *msg, u16 msglen)
{
struct virtchnl_promisc_info *info =
(struct virtchnl_promisc_info *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
struct i40e_mac_filter *f;
i40e_status aq_ret = 0;
bool allmulti = false;
struct i40e_vsi *vsi;
bool alluni = false;
int aq_err = 0;
int bkt;
vsi = i40e_find_vsi_from_id(pf, info->vsi_id);
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
!i40e_vc_isvalid_vsi_id(vf, info->vsi_id) ||
!vsi) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
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. */
aq_ret = 0;
goto error_param;
}
/* Multicast promiscuous handling*/
if (info->flags & FLAG_VF_MULTICAST_PROMISC)
allmulti = true;
if (vf->port_vlan_id) {
aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, vsi->seid,
allmulti,
vf->port_vlan_id,
NULL);
} else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
continue;
aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw,
vsi->seid,
allmulti,
f->vlan,
NULL);
aq_err = pf->hw.aq.asq_last_status;
if (aq_ret) {
dev_err(&pf->pdev->dev,
"Could not add VLAN %d to multicast promiscuous domain err %s aq_err %s\n",
f->vlan,
i40e_stat_str(&pf->hw, aq_ret),
i40e_aq_str(&pf->hw, aq_err));
break;
}
}
} else {
aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi->seid,
allmulti, NULL);
aq_err = pf->hw.aq.asq_last_status;
if (aq_ret) {
dev_err(&pf->pdev->dev,
"VF %d failed to set multicast promiscuous mode err %s aq_err %s\n",
vf->vf_id,
i40e_stat_str(&pf->hw, aq_ret),
i40e_aq_str(&pf->hw, aq_err));
goto error_param;
}
}
if (!aq_ret) {
dev_info(&pf->pdev->dev,
"VF %d successfully set multicast promiscuous mode\n",
vf->vf_id);
if (allmulti)
set_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
else
clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
}
if (info->flags & FLAG_VF_UNICAST_PROMISC)
alluni = true;
if (vf->port_vlan_id) {
aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, vsi->seid,
alluni,
vf->port_vlan_id,
NULL);
} else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
continue;
aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw,
vsi->seid,
alluni,
f->vlan,
NULL);
aq_err = pf->hw.aq.asq_last_status;
if (aq_ret)
dev_err(&pf->pdev->dev,
"Could not add VLAN %d to Unicast promiscuous domain err %s aq_err %s\n",
f->vlan,
i40e_stat_str(&pf->hw, aq_ret),
i40e_aq_str(&pf->hw, aq_err));
}
} else {
aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, vsi->seid,
alluni, NULL,
true);
aq_err = pf->hw.aq.asq_last_status;
if (aq_ret) {
dev_err(&pf->pdev->dev,
"VF %d failed to set unicast promiscuous mode %8.8x err %s aq_err %s\n",
vf->vf_id, info->flags,
i40e_stat_str(&pf->hw, aq_ret),
i40e_aq_str(&pf->hw, aq_err));
goto error_param;
}
}
if (!aq_ret) {
dev_info(&pf->pdev->dev,
"VF %d successfully set unicast promiscuous mode\n",
vf->vf_id);
if (alluni)
set_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
else
clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
}
error_param:
/* 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
* @msglen: msg length
*
* called from the VF to configure the rx/tx
* queues
**/
static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_vsi_queue_config_info *qci =
(struct virtchnl_vsi_queue_config_info *)msg;
struct virtchnl_queue_pair_info *qpi;
struct i40e_pf *pf = vf->pf;
u16 vsi_id, vsi_queue_id;
i40e_status aq_ret = 0;
int i;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
vsi_id = qci->vsi_id;
if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < qci->num_queue_pairs; i++) {
qpi = &qci->qpair[i];
vsi_queue_id = qpi->txq.queue_id;
if ((qpi->txq.vsi_id != vsi_id) ||
(qpi->rxq.vsi_id != vsi_id) ||
(qpi->rxq.queue_id != vsi_queue_id) ||
!i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
&qpi->rxq) ||
i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
&qpi->txq)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
}
/* set vsi num_queue_pairs in use to num configured by VF */
pf->vsi[vf->lan_vsi_idx]->num_queue_pairs = qci->num_queue_pairs;
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
aq_ret);
}
/**
* i40e_vc_config_irq_map_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the VF to configure the irq to
* queue map
**/
static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_irq_map_info *irqmap_info =
(struct virtchnl_irq_map_info *)msg;
struct virtchnl_vector_map *map;
u16 vsi_id, vsi_queue_id, vector_id;
i40e_status aq_ret = 0;
unsigned long tempmap;
int i;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < irqmap_info->num_vectors; i++) {
map = &irqmap_info->vecmap[i];
vector_id = map->vector_id;
vsi_id = map->vsi_id;
/* validate msg params */
if (!i40e_vc_isvalid_vector_id(vf, vector_id) ||
!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
/* lookout for the invalid queue index */
tempmap = map->rxq_map;
for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
vsi_queue_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
}
tempmap = map->txq_map;
for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
vsi_queue_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
}
i40e_config_irq_link_list(vf, vsi_id, map);
}
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
aq_ret);
}
/**
* i40e_vc_enable_queues_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the VF to enable all or specific queue(s)
**/
static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_queue_select *vqs =
(struct virtchnl_queue_select *)msg;
struct i40e_pf *pf = vf->pf;
u16 vsi_id = vqs->vsi_id;
i40e_status aq_ret = 0;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (i40e_vsi_start_rings(pf->vsi[vf->lan_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
* @msglen: msg length
*
* called from the VF to disable all or specific
* queue(s)
**/
static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_queue_select *vqs =
(struct virtchnl_queue_select *)msg;
struct i40e_pf *pf = vf->pf;
i40e_status aq_ret = 0;
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 ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
aq_ret);
}
/**
* i40e_vc_get_stats_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the VF to get vsi stats
**/
static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_queue_select *vqs =
(struct virtchnl_queue_select *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_eth_stats stats;
i40e_status aq_ret = 0;
struct i40e_vsi *vsi;
memset(&stats, 0, sizeof(struct i40e_eth_stats));
if (!test_bit(I40E_VF_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;
}
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));
}
/* 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 8
/**
* i40e_check_vf_permission
* @vf: pointer to the VF info
* @macaddr: pointer to the MAC Address being checked
*
* Check if the VF has permission to add or delete unicast MAC address
* filters and return error code -EPERM if not. Then check if the
* address filter requested is broadcast or zero and if so return
* an invalid MAC address error code.
**/
static inline int i40e_check_vf_permission(struct i40e_vf *vf, u8 *macaddr)
{
struct i40e_pf *pf = vf->pf;
int ret = 0;
if (is_broadcast_ether_addr(macaddr) ||
is_zero_ether_addr(macaddr)) {
dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", macaddr);
ret = I40E_ERR_INVALID_MAC_ADDR;
} else if (vf->pf_set_mac && !is_multicast_ether_addr(macaddr) &&
!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
!ether_addr_equal(macaddr, vf->default_lan_addr.addr)) {
/* If the host VMM administrator has set the VF MAC address
* administratively via the ndo_set_vf_mac command then deny
* permission to the VF to add or delete unicast MAC addresses.
* 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.
*/
dev_err(&pf->pdev->dev,
"VF attempting to override administratively set MAC address, reload the VF driver to resume normal operation\n");
ret = -EPERM;
} else if ((vf->num_mac >= I40E_VC_MAX_MAC_ADDR_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 functionality\n");
ret = -EPERM;
}
return ret;
}
/**
* i40e_vc_add_mac_addr_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* add guest mac address filter
**/
static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_ether_addr_list *al =
(struct virtchnl_ether_addr_list *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
u16 vsi_id = al->vsi_id;
i40e_status ret = 0;
int i;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < al->num_elements; i++) {
ret = i40e_check_vf_permission(vf, al->list[i].addr);
if (ret)
goto error_param;
}
vsi = pf->vsi[vf->lan_vsi_idx];
/* 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);
/* 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;
} else {
vf->num_mac++;
}
}
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_resp_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
ret);
}
/**
* i40e_vc_del_mac_addr_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* remove guest mac address filter
**/
static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_ether_addr_list *al =
(struct virtchnl_ether_addr_list *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
u16 vsi_id = al->vsi_id;
i40e_status ret = 0;
int i;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < al->num_elements; i++) {
if (is_broadcast_ether_addr(al->list[i].addr) ||
is_zero_ether_addr(al->list[i].addr)) {
dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
al->list[i].addr, vf->vf_id);
ret = I40E_ERR_INVALID_MAC_ADDR;
goto error_param;
}
}
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;
} else {
vf->num_mac--;
}
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_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
* @msglen: msg length
*
* program guest vlan id
**/
static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_vlan_filter_list *vfl =
(struct virtchnl_vlan_filter_list *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
u16 vsi_id = vfl->vsi_id;
i40e_status aq_ret = 0;
int i;
if ((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, 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
* @msglen: msg length
*
* remove programmed guest vlan id
**/
static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_vlan_filter_list *vfl =
(struct virtchnl_vlan_filter_list *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
u16 vsi_id = vfl->vsi_id;
i40e_status aq_ret = 0;
int i;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < vfl->num_elements; i++) {
if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (vsi->info.pvid) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < vfl->num_elements; i++) {
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;
i40e_status 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
* @msglen: msg length
* @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, u16 msglen,
bool config)
{
struct virtchnl_iwarp_qvlist_info *qvlist_info =
(struct virtchnl_iwarp_qvlist_info *)msg;
i40e_status 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
* @msglen: msg length
*
* Configure the VF's RSS key
**/
static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_rss_key *vrk =
(struct virtchnl_rss_key *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
u16 vsi_id = vrk->vsi_id;
i40e_status aq_ret = 0;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
!i40e_vc_isvalid_vsi_id(vf, 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
* @msglen: msg length
*
* Configure the VF's RSS LUT
**/
static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_rss_lut *vrl =
(struct virtchnl_rss_lut *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
u16 vsi_id = vrl->vsi_id;
i40e_status aq_ret = 0;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
!i40e_vc_isvalid_vsi_id(vf, vsi_id) ||
(vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE)) {
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
* @msglen: msg length
*
* Return the RSS HENA bits allowed by the hardware
**/
static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_rss_hena *vrh = NULL;
struct i40e_pf *pf = vf->pf;
i40e_status aq_ret = 0;
int len = 0;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
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
* @msglen: msg length
*
* Set the RSS HENA bits for the VF
**/
static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct virtchnl_rss_hena *vrh =
(struct virtchnl_rss_hena *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
i40e_status aq_ret = 0;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
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
* @msglen: msg length
*
* Enable vlan header stripping for the VF
**/
static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg,
u16 msglen)
{
struct i40e_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];
i40e_status aq_ret = 0;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
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
* @msglen: msg length
*
* Disable vlan header stripping for the VF
**/
static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg,
u16 msglen)
{
struct i40e_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];
i40e_status aq_ret = 0;
if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
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_vc_process_vf_msg
* @pf: pointer to the PF structure
* @vf_id: source VF id
* @msg: pointer to the msg buffer
* @msglen: msg length
* @msghndl: msg handle
*
* called from the common aeq/arq handler to
* process request from VF
**/
int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
u32 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 >= 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);
/* perform additional checks specific to this driver */
if (v_opcode == VIRTCHNL_OP_CONFIG_RSS_KEY) {
struct virtchnl_rss_key *vrk = (struct virtchnl_rss_key *)msg;
if (vrk->key_len != I40E_HKEY_ARRAY_SIZE)
ret = -EINVAL;
} else if (v_opcode == VIRTCHNL_OP_CONFIG_RSS_LUT) {
struct virtchnl_rss_lut *vrl = (struct virtchnl_rss_lut *)msg;
if (vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE)
ret = -EINVAL;
}
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_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);
break;
case VIRTCHNL_OP_RESET_VF:
i40e_vc_reset_vf_msg(vf);
ret = 0;
break;
case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
ret = i40e_vc_config_promiscuous_mode_msg(vf, msg, msglen);
break;
case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
ret = i40e_vc_config_queues_msg(vf, msg, msglen);
break;
case VIRTCHNL_OP_CONFIG_IRQ_MAP:
ret = i40e_vc_config_irq_map_msg(vf, msg, msglen);
break;
case VIRTCHNL_OP_ENABLE_QUEUES:
ret = i40e_vc_enable_queues_msg(vf, msg, msglen);
i40e_vc_notify_vf_link_state(vf);
break;
case VIRTCHNL_OP_DISABLE_QUEUES:
ret = i40e_vc_disable_queues_msg(vf, msg, msglen);
break;
case VIRTCHNL_OP_ADD_ETH_ADDR:
ret = i40e_vc_add_mac_addr_msg(vf, msg, msglen);
break;
case VIRTCHNL_OP_DEL_ETH_ADDR:
ret = i40e_vc_del_mac_addr_msg(vf, msg, msglen);
break;
case VIRTCHNL_OP_ADD_VLAN:
ret = i40e_vc_add_vlan_msg(vf, msg, msglen);
break;
case VIRTCHNL_OP_DEL_VLAN:
ret = i40e_vc_remove_vlan_msg(vf, msg, msglen);
break;
case VIRTCHNL_OP_GET_STATS:
ret = i40e_vc_get_stats_msg(vf, msg, msglen);
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, msglen, true);
break;
case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
ret = i40e_vc_iwarp_qvmap_msg(vf, msg, msglen, false);
break;
case VIRTCHNL_OP_CONFIG_RSS_KEY:
ret = i40e_vc_config_rss_key(vf, msg, msglen);
break;
case VIRTCHNL_OP_CONFIG_RSS_LUT:
ret = i40e_vc_config_rss_lut(vf, msg, msglen);
break;
case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
ret = i40e_vc_get_rss_hena(vf, msg, msglen);
break;
case VIRTCHNL_OP_SET_RSS_HENA:
ret = i40e_vc_set_rss_hena(vf, msg, msglen);
break;
case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
ret = i40e_vc_enable_vlan_stripping(vf, msg, msglen);
break;
case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
ret = i40e_vc_disable_vlan_stripping(vf, msg, msglen);
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_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;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev,
"Invalid VF Identifier %d\n", vf_id);
ret = -EINVAL;
goto error_param;
}
vf = &(pf->vf[vf_id]);
vsi = pf->vsi[vf->lan_vsi_idx];
/* 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.
*/
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;
}
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 driver stop so it has to reload with new MAC address */
i40e_vc_disable_vf(pf, vf);
dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n");
error_param:
return ret;
}
/**
* i40e_ndo_set_vf_port_vlan
* @netdev: network interface device structure
* @vf_id: VF identifier
* @vlan_id: mac address
* @qos: priority setting
* @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);
struct i40e_pf *pf = np->vsi->back;
struct i40e_vsi *vsi;
struct i40e_vf *vf;
int ret = 0;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
ret = -EINVAL;
goto error_pvid;
}
if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
ret = -EINVAL;
goto error_pvid;
}
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;
/* Locked once because multiple functions below iterate list */
spin_lock_bh(&vsi->mac_filter_hash_lock);
if (le16_to_cpu(vsi->info.pvid) == 0 && i40e_is_vsi_in_vlan(vsi)) {
dev_err(&pf->pdev->dev,
"VF %d has already configured VLAN filters and the administrator is requesting a port VLAN override.\nPlease unload and reload the VF driver for this change to take effect.\n",
vf_id);
/* Administrator Error - knock the VF offline until he does
* the right thing by reconfiguring his network correctly
* and then reloading the VF driver.
*/
i40e_vc_disable_vf(pf, vf);
/* During reset the VF got a new VSI, so refresh the pointer. */
vsi = pf->vsi[vf->lan_vsi_idx];
}
/* 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);
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);
/* 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 = 0;
error_pvid:
return ret;
}
#define I40E_BW_CREDIT_DIVISOR 50 /* 50Mbps per BW credit */
#define I40E_MAX_BW_INACTIVE_ACCUM 4 /* device can accumulate 4 credits max */
/**
* i40e_ndo_set_vf_bw
* @netdev: network interface device structure
* @vf_id: VF identifier
* @tx_rate: Tx rate
*
* configure VF Tx rate
**/
int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
int max_tx_rate)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
struct i40e_vsi *vsi;
struct i40e_vf *vf;
int speed = 0;
int ret = 0;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev, "Invalid VF Identifier %d.\n", vf_id);
ret = -EINVAL;
goto error;
}
if (min_tx_rate) {
dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
min_tx_rate, vf_id);
return -EINVAL;
}
vf = &(pf->vf[vf_id]);
vsi = pf->vsi[vf->lan_vsi_idx];
if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
vf_id);
ret = -EAGAIN;
goto error;
}
switch (pf->hw.phy.link_info.link_speed) {
case I40E_LINK_SPEED_40GB:
speed = 40000;
break;
case I40E_LINK_SPEED_25GB:
speed = 25000;
break;
case I40E_LINK_SPEED_20GB:
speed = 20000;
break;
case I40E_LINK_SPEED_10GB:
speed = 10000;
break;
case I40E_LINK_SPEED_1GB:
speed = 1000;
break;
default:
break;
}
if (max_tx_rate > speed) {
dev_err(&pf->pdev->dev, "Invalid max tx rate %d specified for VF %d.\n",
max_tx_rate, vf->vf_id);
ret = -EINVAL;
goto error;
}
if ((max_tx_rate < 50) && (max_tx_rate > 0)) {
dev_warn(&pf->pdev->dev, "Setting max Tx rate to minimum usable value of 50Mbps.\n");
max_tx_rate = 50;
}
/* Tx rate credits are in values of 50Mbps, 0 is disabled*/
ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
max_tx_rate / I40E_BW_CREDIT_DIVISOR,
I40E_MAX_BW_INACTIVE_ACCUM, NULL);
if (ret) {
dev_err(&pf->pdev->dev, "Unable to set max tx rate, error code %d.\n",
ret);
ret = -EIO;
goto error;
}
vf->tx_rate = max_tx_rate;
error:
return ret;
}
/**
* i40e_ndo_get_vf_config
* @netdev: network interface device structure
* @vf_id: VF identifier
* @ivi: VF configuration structure
*
* return VF configuration
**/
int i40e_ndo_get_vf_config(struct net_device *netdev,
int vf_id, struct ifla_vf_info *ivi)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_vf *vf;
int ret = 0;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
ret = -EINVAL;
goto error_param;
}
vf = &(pf->vf[vf_id]);
/* first vsi is always the LAN vsi */
vsi = pf->vsi[vf->lan_vsi_idx];
if (!test_bit(I40E_VF_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;
}
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:
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 virtchnl_pf_event pfe;
struct i40e_hw *hw = &pf->hw;
struct i40e_vf *vf;
int abs_vf_id;
int ret = 0;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
ret = -EINVAL;
goto error_out;
}
vf = &pf->vf[vf_id];
abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
pfe.severity = PF_EVENT_SEVERITY_INFO;
switch (link) {
case IFLA_VF_LINK_STATE_AUTO:
vf->link_forced = false;
pfe.event_data.link_event.link_status =
pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
pfe.event_data.link_event.link_speed =
(enum virtchnl_link_speed)
pf->hw.phy.link_info.link_speed;
break;
case IFLA_VF_LINK_STATE_ENABLE:
vf->link_forced = true;
vf->link_up = true;
pfe.event_data.link_event.link_status = true;
pfe.event_data.link_event.link_speed = I40E_LINK_SPEED_40GB;
break;
case IFLA_VF_LINK_STATE_DISABLE:
vf->link_forced = true;
vf->link_up = false;
pfe.event_data.link_event.link_status = false;
pfe.event_data.link_event.link_speed = 0;
break;
default:
ret = -EINVAL;
goto error_out;
}
/* Notify the VF of its new link state */
i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
0, (u8 *)&pfe, sizeof(pfe), NULL);
error_out:
return ret;
}
/**
* i40e_ndo_set_vf_spoofchk
* @netdev: network interface device structure
* @vf_id: VF identifier
* @enable: flag to enable or disable feature
*
* Enable or disable VF spoof checking
**/
int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_vsi_context ctxt;
struct i40e_hw *hw = &pf->hw;
struct i40e_vf *vf;
int ret = 0;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
ret = -EINVAL;
goto out;
}
vf = &(pf->vf[vf_id]);
if (!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:
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;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
return -EINVAL;
}
if (pf->flags & I40E_FLAG_MFP_ENABLED) {
dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
return -EINVAL;
}
vf = &pf->vf[vf_id];
if (!vf)
return -EINVAL;
if (setting == vf->trusted)
goto out;
vf->trusted = setting;
i40e_vc_notify_vf_reset(vf);
i40e_reset_vf(vf, false);
dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
vf_id, setting ? "" : "un");
out:
return ret;
}