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linux/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
Jacob Keller 5710ab7916 i40e: stop disabling VFs due to PF error responses 
The i40e_vc_send_msg_to_vf_ex (and its wrapper i40e_vc_send_msg_to_vf)
function has logic to detect "failure" responses sent to the VF. If a VF
is sent more than I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED, then the VF is
marked as disabled. In either case, a dev_info message is printed
stating that a VF opcode failed.

This logic originates from the early implementation of VF support in
commit 5c3c48ac6b ("i40e: implement virtual device interface").

That commit did not go far enough. The "logic" for this behavior seems
to be that error responses somehow indicate a malicious VF. This is not
really true. The PF might be sending an error for any number of reasons
such as lacking resources, an unsupported operation, etc. This does not
indicate a malicious VF. We already have a separate robust malicious VF
detection which relies on hardware logic to detect and prevent a variety
of behaviors.

There is no justification for this behavior in the original
implementation. In fact, a later commit 18b7af57d9 ("i40e: Lower some
message levels") reduced the opcode failure message from a dev_err to a
dev_info. In addition, recent commit 01cbf50877 ("i40e: Fix to not
show opcode msg on unsuccessful VF MAC change") changed the logic to
allow quieting it for expected failures.

That commit prevented this logic from kicking in for specific
circumstances. This change did not go far enough. The behavior is not
documented nor is it part of any requirement for our products. Other
operating systems such as the FreeBSD implementation of our driver do
not include this logic.

It is clear this check does not make sense, and causes problems which
led to ugly workarounds.

Fix this by just removing the entire logic and the need for the
i40e_vc_send_msg_to_vf_ex function.

Fixes: 01cbf50877 ("i40e: Fix to not show opcode msg on unsuccessful VF MAC change")
Fixes: 5c3c48ac6b ("i40e: implement virtual device interface")
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2022-03-08 13:31:08 -08:00

4795 lines
125 KiB
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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,
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_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 i40e_status
i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable,
bool unicast_enable, s16 *vl, u16 num_vlans)
{
i40e_status aq_ret, aq_tmp = 0;
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
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 %s aq_err %s\n",
vf->vf_id,
i40e_stat_str(&pf->hw, 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 %s aq_err %s\n",
vf->vf_id,
i40e_stat_str(&pf->hw, 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 %s aq_err %s\n",
vf->vf_id,
i40e_stat_str(&pf->hw, 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 %s aq_err %s\n",
vf->vf_id,
i40e_stat_str(&pf->hw, 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 i40e_status i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
u16 vsi_id,
bool allmulti,
bool alluni)
{
i40e_status aq_ret = I40E_SUCCESS;
struct i40e_pf *pf = vf->pf;
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;
/* If the VFs have been disabled, this means something else is
* resetting the VF, so we shouldn't continue.
*/
if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
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);
clear_bit(__I40E_VF_DISABLE, pf->state);
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++)
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);
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;
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;
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_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_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;
i40e_status aq_ret = 0;
struct i40e_vsi *vsi;
int num_vsis = 1;
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;
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_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;
i40e_status aq_ret = 0;
bool allmulti = false;
bool alluni = false;
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;
i40e_status aq_ret = 0;
int i, j = 0, idx = 0;
struct i40e_vsi *vsi;
u16 num_qps_all = 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 < I40E_MAX_VF_VSI; 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;
u16 vsi_id;
i40e_status aq_ret = 0;
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;
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;
}
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;
i40e_status 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;
i40e_status 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;
i40e_status 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;
i40e_status 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;
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, 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;
i40e_status 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;
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
* @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;
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
*
* 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;
i40e_status 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;
i40e_status 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;
i40e_status 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;
i40e_status 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)
{
i40e_status aq_ret = 0;
struct i40e_vsi *vsi;
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)
{
i40e_status aq_ret = 0;
struct i40e_vsi *vsi;
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 %s aq_err %s\n",
vf->vf_id, i40e_stat_str(&pf->hw, 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;
i40e_status 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 %s aq_err %s\n",
vf->vf_id, i40e_stat_str(&pf->hw, 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;
i40e_status 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 %s aq_err %s\n",
vf->vf_id, i40e_stat_str(&pf->hw, 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;
i40e_status 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;
i40e_status 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_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;
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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