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linux/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
Tony Nguyen 462acf6aca ice: Enable DDP package download 
Attempt to request an optional device-specific DDP package file
(one with the PCIe Device Serial Number in its name so that different DDP
package files can be used on different devices). If the optional package
file exists, download it to the device. If not, download the default
package file.

Log an appropriate message based on whether or not a DDP package
file exists and the return code from the attempt to download it to the
device.  If the download fails and there is not already a package file on
the device, go into "Safe Mode" where some features are not supported.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-09-12 11:37:38 -07:00

3276 lines
88 KiB
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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2018, Intel Corporation. */
#include "ice.h"
#include "ice_lib.h"
/**
* ice_err_to_virt err - translate errors for VF return code
* @ice_err: error return code
*/
static enum virtchnl_status_code ice_err_to_virt_err(enum ice_status ice_err)
{
switch (ice_err) {
case ICE_SUCCESS:
return VIRTCHNL_STATUS_SUCCESS;
case ICE_ERR_BAD_PTR:
case ICE_ERR_INVAL_SIZE:
case ICE_ERR_DEVICE_NOT_SUPPORTED:
case ICE_ERR_PARAM:
case ICE_ERR_CFG:
return VIRTCHNL_STATUS_ERR_PARAM;
case ICE_ERR_NO_MEMORY:
return VIRTCHNL_STATUS_ERR_NO_MEMORY;
case ICE_ERR_NOT_READY:
case ICE_ERR_RESET_FAILED:
case ICE_ERR_FW_API_VER:
case ICE_ERR_AQ_ERROR:
case ICE_ERR_AQ_TIMEOUT:
case ICE_ERR_AQ_FULL:
case ICE_ERR_AQ_NO_WORK:
case ICE_ERR_AQ_EMPTY:
return VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
default:
return VIRTCHNL_STATUS_ERR_NOT_SUPPORTED;
}
}
/**
* ice_vc_vf_broadcast - Broadcast a message to all VFs on PF
* @pf: pointer to the PF structure
* @v_opcode: operation code
* @v_retval: return value
* @msg: pointer to the msg buffer
* @msglen: msg length
*/
static void
ice_vc_vf_broadcast(struct ice_pf *pf, enum virtchnl_ops v_opcode,
enum virtchnl_status_code v_retval, u8 *msg, u16 msglen)
{
struct ice_hw *hw = &pf->hw;
struct ice_vf *vf = pf->vf;
int i;
for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
/* Not all vfs are enabled so skip the ones that are not */
if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states) &&
!test_bit(ICE_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
*/
ice_aq_send_msg_to_vf(hw, vf->vf_id, v_opcode, v_retval, msg,
msglen, NULL);
}
}
/**
* ice_set_pfe_link - Set the link speed/status of the virtchnl_pf_event
* @vf: pointer to the VF structure
* @pfe: pointer to the virtchnl_pf_event to set link speed/status for
* @ice_link_speed: link speed specified by ICE_AQ_LINK_SPEED_*
* @link_up: whether or not to set the link up/down
*/
static void
ice_set_pfe_link(struct ice_vf *vf, struct virtchnl_pf_event *pfe,
int ice_link_speed, bool link_up)
{
if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
pfe->event_data.link_event_adv.link_status = link_up;
/* Speed in Mbps */
pfe->event_data.link_event_adv.link_speed =
ice_conv_link_speed_to_virtchnl(true, ice_link_speed);
} else {
pfe->event_data.link_event.link_status = link_up;
/* Legacy method for virtchnl link speeds */
pfe->event_data.link_event.link_speed =
(enum virtchnl_link_speed)
ice_conv_link_speed_to_virtchnl(false, ice_link_speed);
}
}
/**
* ice_set_pfe_link_forced - Force the virtchnl_pf_event link speed/status
* @vf: pointer to the VF structure
* @pfe: pointer to the virtchnl_pf_event to set link speed/status for
* @link_up: whether or not to set the link up/down
*/
static void
ice_set_pfe_link_forced(struct ice_vf *vf, struct virtchnl_pf_event *pfe,
bool link_up)
{
u16 link_speed;
if (link_up)
link_speed = ICE_AQ_LINK_SPEED_100GB;
else
link_speed = ICE_AQ_LINK_SPEED_UNKNOWN;
ice_set_pfe_link(vf, pfe, link_speed, link_up);
}
/**
* ice_vc_notify_vf_link_state - Inform a VF of link status
* @vf: pointer to the VF structure
*
* send a link status message to a single VF
*/
static void ice_vc_notify_vf_link_state(struct ice_vf *vf)
{
struct virtchnl_pf_event pfe = { 0 };
struct ice_link_status *ls;
struct ice_pf *pf = vf->pf;
struct ice_hw *hw;
hw = &pf->hw;
ls = &hw->port_info->phy.link_info;
pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
pfe.severity = PF_EVENT_SEVERITY_INFO;
/* Always report link is down if the VF queues aren't enabled */
if (!vf->num_qs_ena)
ice_set_pfe_link(vf, &pfe, ICE_AQ_LINK_SPEED_UNKNOWN, false);
else if (vf->link_forced)
ice_set_pfe_link_forced(vf, &pfe, vf->link_up);
else
ice_set_pfe_link(vf, &pfe, ls->link_speed, ls->link_info &
ICE_AQ_LINK_UP);
ice_aq_send_msg_to_vf(hw, vf->vf_id, VIRTCHNL_OP_EVENT,
VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe,
sizeof(pfe), NULL);
}
/**
* ice_free_vf_res - Free a VF's resources
* @vf: pointer to the VF info
*/
static void ice_free_vf_res(struct ice_vf *vf)
{
struct ice_pf *pf = vf->pf;
int i, last_vector_idx;
/* First, disable VF's configuration API to prevent OS from
* accessing the VF's VSI after it's freed or invalidated.
*/
clear_bit(ICE_VF_STATE_INIT, vf->vf_states);
/* free VSI and disconnect it from the parent uplink */
if (vf->lan_vsi_idx) {
ice_vsi_release(pf->vsi[vf->lan_vsi_idx]);
vf->lan_vsi_idx = 0;
vf->lan_vsi_num = 0;
vf->num_mac = 0;
}
last_vector_idx = vf->first_vector_idx + pf->num_vf_msix - 1;
/* Disable interrupts so that VF starts in a known state */
for (i = vf->first_vector_idx; i <= last_vector_idx; i++) {
wr32(&pf->hw, GLINT_DYN_CTL(i), GLINT_DYN_CTL_CLEARPBA_M);
ice_flush(&pf->hw);
}
/* reset some of the state variables keeping track of the resources */
clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states);
clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states);
}
/**
* ice_dis_vf_mappings
* @vf: pointer to the VF structure
*/
static void ice_dis_vf_mappings(struct ice_vf *vf)
{
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
int first, last, v;
struct ice_hw *hw;
hw = &pf->hw;
vsi = pf->vsi[vf->lan_vsi_idx];
wr32(hw, VPINT_ALLOC(vf->vf_id), 0);
wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), 0);
first = vf->first_vector_idx;
last = first + pf->num_vf_msix - 1;
for (v = first; v <= last; v++) {
u32 reg;
reg = (((1 << GLINT_VECT2FUNC_IS_PF_S) &
GLINT_VECT2FUNC_IS_PF_M) |
((hw->pf_id << GLINT_VECT2FUNC_PF_NUM_S) &
GLINT_VECT2FUNC_PF_NUM_M));
wr32(hw, GLINT_VECT2FUNC(v), reg);
}
if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG)
wr32(hw, VPLAN_TX_QBASE(vf->vf_id), 0);
else
dev_err(&pf->pdev->dev,
"Scattered mode for VF Tx queues is not yet implemented\n");
if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG)
wr32(hw, VPLAN_RX_QBASE(vf->vf_id), 0);
else
dev_err(&pf->pdev->dev,
"Scattered mode for VF Rx queues is not yet implemented\n");
}
/**
* ice_sriov_free_msix_res - Reset/free any used MSIX resources
* @pf: pointer to the PF structure
*
* If MSIX entries from the pf->irq_tracker were needed then we need to
* reset the irq_tracker->end and give back the entries we needed to
* num_avail_sw_msix.
*
* If no MSIX entries were taken from the pf->irq_tracker then just clear
* the pf->sriov_base_vector.
*
* Returns 0 on success, and -EINVAL on error.
*/
static int ice_sriov_free_msix_res(struct ice_pf *pf)
{
struct ice_res_tracker *res;
if (!pf)
return -EINVAL;
res = pf->irq_tracker;
if (!res)
return -EINVAL;
/* give back irq_tracker resources used */
if (pf->sriov_base_vector < res->num_entries) {
res->end = res->num_entries;
pf->num_avail_sw_msix +=
res->num_entries - pf->sriov_base_vector;
}
pf->sriov_base_vector = 0;
return 0;
}
/**
* ice_set_vf_state_qs_dis - Set VF queues state to disabled
* @vf: pointer to the VF structure
*/
void ice_set_vf_state_qs_dis(struct ice_vf *vf)
{
/* Clear Rx/Tx enabled queues flag */
bitmap_zero(vf->txq_ena, ICE_MAX_BASE_QS_PER_VF);
bitmap_zero(vf->rxq_ena, ICE_MAX_BASE_QS_PER_VF);
vf->num_qs_ena = 0;
clear_bit(ICE_VF_STATE_QS_ENA, vf->vf_states);
}
/**
* ice_dis_vf_qs - Disable the VF queues
* @vf: pointer to the VF structure
*/
static void ice_dis_vf_qs(struct ice_vf *vf)
{
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
vsi = pf->vsi[vf->lan_vsi_idx];
ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id);
ice_vsi_stop_rx_rings(vsi);
ice_set_vf_state_qs_dis(vf);
}
/**
* ice_free_vfs - Free all VFs
* @pf: pointer to the PF structure
*/
void ice_free_vfs(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
int tmp, i;
if (!pf->vf)
return;
while (test_and_set_bit(__ICE_VF_DIS, pf->state))
usleep_range(1000, 2000);
/* Avoid wait time by stopping all VFs at the same time */
for (i = 0; i < pf->num_alloc_vfs; i++)
if (test_bit(ICE_VF_STATE_QS_ENA, pf->vf[i].vf_states))
ice_dis_vf_qs(&pf->vf[i]);
/* 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");
tmp = pf->num_alloc_vfs;
pf->num_vf_qps = 0;
pf->num_alloc_vfs = 0;
for (i = 0; i < tmp; i++) {
if (test_bit(ICE_VF_STATE_INIT, pf->vf[i].vf_states)) {
/* disable VF qp mappings */
ice_dis_vf_mappings(&pf->vf[i]);
ice_free_vf_res(&pf->vf[i]);
}
}
if (ice_sriov_free_msix_res(pf))
dev_err(&pf->pdev->dev,
"Failed to free MSIX resources used by SR-IOV\n");
devm_kfree(&pf->pdev->dev, 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)) {
int vf_id;
/* 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++) {
u32 reg_idx, bit_idx;
reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
}
}
clear_bit(__ICE_VF_DIS, pf->state);
clear_bit(ICE_FLAG_SRIOV_ENA, pf->flags);
}
/**
* ice_trigger_vf_reset - Reset a VF on HW
* @vf: pointer to the VF structure
* @is_vflr: true if VFLR was issued, false if not
* @is_pfr: true if the reset was triggered due to a previous PFR
*
* 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 ice_trigger_vf_reset(struct ice_vf *vf, bool is_vflr, bool is_pfr)
{
struct ice_pf *pf = vf->pf;
u32 reg, reg_idx, bit_idx;
struct ice_hw *hw;
int vf_abs_id, i;
hw = &pf->hw;
vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
/* Inform VF that it is no longer active, as a warning */
clear_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);
/* Disable VF's configuration API during reset. The flag is re-enabled
* in ice_alloc_vf_res(), when it's safe again to access VF's VSI.
* It's normally disabled in ice_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(ICE_VF_STATE_INIT, vf->vf_states);
/* VF_MBX_ARQLEN is cleared by PFR, so the driver needs to clear it
* in the case of VFR. If this is done for PFR, it can mess up VF
* resets because the VF driver may already have started cleanup
* by the time we get here.
*/
if (!is_pfr)
wr32(hw, VF_MBX_ARQLEN(vf_abs_id), 0);
/* 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 (!is_vflr) {
/* reset VF using VPGEN_VFRTRIG reg */
reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id));
reg |= VPGEN_VFRTRIG_VFSWR_M;
wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg);
}
/* clear the VFLR bit in GLGEN_VFLRSTAT */
reg_idx = (vf_abs_id) / 32;
bit_idx = (vf_abs_id) % 32;
wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
ice_flush(hw);
wr32(hw, PF_PCI_CIAA,
VF_DEVICE_STATUS | (vf_abs_id << PF_PCI_CIAA_VF_NUM_S));
for (i = 0; i < ICE_PCI_CIAD_WAIT_COUNT; i++) {
reg = rd32(hw, PF_PCI_CIAD);
/* no transactions pending so stop polling */
if ((reg & VF_TRANS_PENDING_M) == 0)
break;
dev_err(&pf->pdev->dev,
"VF %d PCI transactions stuck\n", vf->vf_id);
udelay(ICE_PCI_CIAD_WAIT_DELAY_US);
}
}
/**
* ice_vsi_set_pvid_fill_ctxt - Set VSI ctxt for add PVID
* @ctxt: the VSI ctxt to fill
* @vid: the VLAN ID to set as a PVID
*/
static void ice_vsi_set_pvid_fill_ctxt(struct ice_vsi_ctx *ctxt, u16 vid)
{
ctxt->info.vlan_flags = (ICE_AQ_VSI_VLAN_MODE_UNTAGGED |
ICE_AQ_VSI_PVLAN_INSERT_PVID |
ICE_AQ_VSI_VLAN_EMOD_STR);
ctxt->info.pvid = cpu_to_le16(vid);
ctxt->info.sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
ICE_AQ_VSI_PROP_SW_VALID);
}
/**
* ice_vsi_kill_pvid_fill_ctxt - Set VSI ctx for remove PVID
* @ctxt: the VSI ctxt to fill
*/
static void ice_vsi_kill_pvid_fill_ctxt(struct ice_vsi_ctx *ctxt)
{
ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_EMOD_NOTHING;
ctxt->info.vlan_flags |= ICE_AQ_VSI_VLAN_MODE_ALL;
ctxt->info.sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
ICE_AQ_VSI_PROP_SW_VALID);
}
/**
* ice_vsi_manage_pvid - Enable or disable port VLAN for VSI
* @vsi: the VSI to update
* @vid: the VLAN ID to set as a PVID
* @enable: true for enable PVID false for disable
*/
static int ice_vsi_manage_pvid(struct ice_vsi *vsi, u16 vid, bool enable)
{
struct device *dev = &vsi->back->pdev->dev;
struct ice_hw *hw = &vsi->back->hw;
struct ice_vsi_ctx *ctxt;
enum ice_status status;
int ret = 0;
ctxt = devm_kzalloc(dev, sizeof(*ctxt), GFP_KERNEL);
if (!ctxt)
return -ENOMEM;
ctxt->info = vsi->info;
if (enable)
ice_vsi_set_pvid_fill_ctxt(ctxt, vid);
else
ice_vsi_kill_pvid_fill_ctxt(ctxt);
status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
if (status) {
dev_info(dev, "update VSI for port VLAN failed, err %d aq_err %d\n",
status, hw->adminq.sq_last_status);
ret = -EIO;
goto out;
}
vsi->info = ctxt->info;
out:
devm_kfree(dev, ctxt);
return ret;
}
/**
* ice_vf_vsi_setup - Set up a VF VSI
* @pf: board private structure
* @pi: pointer to the port_info instance
* @vf_id: defines VF ID to which this VSI connects.
*
* Returns pointer to the successfully allocated VSI struct on success,
* otherwise returns NULL on failure.
*/
static struct ice_vsi *
ice_vf_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi, u16 vf_id)
{
return ice_vsi_setup(pf, pi, ICE_VSI_VF, vf_id);
}
/**
* ice_calc_vf_first_vector_idx - Calculate MSIX vector index in the PF space
* @pf: pointer to PF structure
* @vf: pointer to VF that the first MSIX vector index is being calculated for
*
* This returns the first MSIX vector index in PF space that is used by this VF.
* This index is used when accessing PF relative registers such as
* GLINT_VECT2FUNC and GLINT_DYN_CTL.
* This will always be the OICR index in the AVF driver so any functionality
* using vf->first_vector_idx for queue configuration will have to increment by
* 1 to avoid meddling with the OICR index.
*/
static int ice_calc_vf_first_vector_idx(struct ice_pf *pf, struct ice_vf *vf)
{
return pf->sriov_base_vector + vf->vf_id * pf->num_vf_msix;
}
/**
* ice_alloc_vsi_res - Setup VF VSI and its resources
* @vf: pointer to the VF structure
*
* Returns 0 on success, negative value on failure
*/
static int ice_alloc_vsi_res(struct ice_vf *vf)
{
struct ice_pf *pf = vf->pf;
LIST_HEAD(tmp_add_list);
u8 broadcast[ETH_ALEN];
struct ice_vsi *vsi;
int status = 0;
/* first vector index is the VFs OICR index */
vf->first_vector_idx = ice_calc_vf_first_vector_idx(pf, vf);
vsi = ice_vf_vsi_setup(pf, pf->hw.port_info, vf->vf_id);
if (!vsi) {
dev_err(&pf->pdev->dev, "Failed to create VF VSI\n");
return -ENOMEM;
}
vf->lan_vsi_idx = vsi->idx;
vf->lan_vsi_num = vsi->vsi_num;
/* Check if port VLAN exist before, and restore it accordingly */
if (vf->port_vlan_id) {
ice_vsi_manage_pvid(vsi, vf->port_vlan_id, true);
ice_vsi_add_vlan(vsi, vf->port_vlan_id & ICE_VLAN_M);
}
eth_broadcast_addr(broadcast);
status = ice_add_mac_to_list(vsi, &tmp_add_list, broadcast);
if (status)
goto ice_alloc_vsi_res_exit;
if (is_valid_ether_addr(vf->dflt_lan_addr.addr)) {
status = ice_add_mac_to_list(vsi, &tmp_add_list,
vf->dflt_lan_addr.addr);
if (status)
goto ice_alloc_vsi_res_exit;
}
status = ice_add_mac(&pf->hw, &tmp_add_list);
if (status)
dev_err(&pf->pdev->dev,
"could not add mac filters error %d\n", status);
else
vf->num_mac = 1;
/* Clear this bit after VF initialization since we shouldn't reclaim
* and reassign interrupts for synchronous or asynchronous VFR events.
* We don't want to reconfigure interrupts since AVF driver doesn't
* expect vector assignment to be changed unless there is a request for
* more vectors.
*/
ice_alloc_vsi_res_exit:
ice_free_fltr_list(&pf->pdev->dev, &tmp_add_list);
return status;
}
/**
* ice_alloc_vf_res - Allocate VF resources
* @vf: pointer to the VF structure
*/
static int ice_alloc_vf_res(struct ice_vf *vf)
{
struct ice_pf *pf = vf->pf;
int tx_rx_queue_left;
int status;
/* Update number of VF queues, in case VF had requested for queue
* changes
*/
tx_rx_queue_left = min_t(int, ice_get_avail_txq_count(pf),
ice_get_avail_rxq_count(pf));
tx_rx_queue_left += ICE_DFLT_QS_PER_VF;
if (vf->num_req_qs && vf->num_req_qs <= tx_rx_queue_left &&
vf->num_req_qs != vf->num_vf_qs)
vf->num_vf_qs = vf->num_req_qs;
/* setup VF VSI and necessary resources */
status = ice_alloc_vsi_res(vf);
if (status)
goto ice_alloc_vf_res_exit;
if (vf->trusted)
set_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
else
clear_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
/* VF is now completely initialized */
set_bit(ICE_VF_STATE_INIT, vf->vf_states);
return status;
ice_alloc_vf_res_exit:
ice_free_vf_res(vf);
return status;
}
/**
* ice_ena_vf_mappings
* @vf: pointer to the VF structure
*
* Enable VF vectors and queues allocation by writing the details into
* respective registers.
*/
static void ice_ena_vf_mappings(struct ice_vf *vf)
{
int abs_vf_id, abs_first, abs_last;
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
int first, last, v;
struct ice_hw *hw;
u32 reg;
hw = &pf->hw;
vsi = pf->vsi[vf->lan_vsi_idx];
first = vf->first_vector_idx;
last = (first + pf->num_vf_msix) - 1;
abs_first = first + pf->hw.func_caps.common_cap.msix_vector_first_id;
abs_last = (abs_first + pf->num_vf_msix) - 1;
abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
/* VF Vector allocation */
reg = (((abs_first << VPINT_ALLOC_FIRST_S) & VPINT_ALLOC_FIRST_M) |
((abs_last << VPINT_ALLOC_LAST_S) & VPINT_ALLOC_LAST_M) |
VPINT_ALLOC_VALID_M);
wr32(hw, VPINT_ALLOC(vf->vf_id), reg);
reg = (((abs_first << VPINT_ALLOC_PCI_FIRST_S)
& VPINT_ALLOC_PCI_FIRST_M) |
((abs_last << VPINT_ALLOC_PCI_LAST_S) & VPINT_ALLOC_PCI_LAST_M) |
VPINT_ALLOC_PCI_VALID_M);
wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), reg);
/* map the interrupts to its functions */
for (v = first; v <= last; v++) {
reg = (((abs_vf_id << GLINT_VECT2FUNC_VF_NUM_S) &
GLINT_VECT2FUNC_VF_NUM_M) |
((hw->pf_id << GLINT_VECT2FUNC_PF_NUM_S) &
GLINT_VECT2FUNC_PF_NUM_M));
wr32(hw, GLINT_VECT2FUNC(v), reg);
}
/* Map mailbox interrupt. We put an explicit 0 here to remind us that
* VF admin queue interrupts will go to VF MSI-X vector 0.
*/
wr32(hw, VPINT_MBX_CTL(abs_vf_id), VPINT_MBX_CTL_CAUSE_ENA_M | 0);
/* set regardless of mapping mode */
wr32(hw, VPLAN_TXQ_MAPENA(vf->vf_id), VPLAN_TXQ_MAPENA_TX_ENA_M);
/* VF Tx queues allocation */
if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG) {
/* set the VF PF Tx queue range
* VFNUMQ value should be set to (number of queues - 1). A value
* of 0 means 1 queue and a value of 255 means 256 queues
*/
reg = (((vsi->txq_map[0] << VPLAN_TX_QBASE_VFFIRSTQ_S) &
VPLAN_TX_QBASE_VFFIRSTQ_M) |
(((vsi->alloc_txq - 1) << VPLAN_TX_QBASE_VFNUMQ_S) &
VPLAN_TX_QBASE_VFNUMQ_M));
wr32(hw, VPLAN_TX_QBASE(vf->vf_id), reg);
} else {
dev_err(&pf->pdev->dev,
"Scattered mode for VF Tx queues is not yet implemented\n");
}
/* set regardless of mapping mode */
wr32(hw, VPLAN_RXQ_MAPENA(vf->vf_id), VPLAN_RXQ_MAPENA_RX_ENA_M);
/* VF Rx queues allocation */
if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG) {
/* set the VF PF Rx queue range
* VFNUMQ value should be set to (number of queues - 1). A value
* of 0 means 1 queue and a value of 255 means 256 queues
*/
reg = (((vsi->rxq_map[0] << VPLAN_RX_QBASE_VFFIRSTQ_S) &
VPLAN_RX_QBASE_VFFIRSTQ_M) |
(((vsi->alloc_txq - 1) << VPLAN_RX_QBASE_VFNUMQ_S) &
VPLAN_RX_QBASE_VFNUMQ_M));
wr32(hw, VPLAN_RX_QBASE(vf->vf_id), reg);
} else {
dev_err(&pf->pdev->dev,
"Scattered mode for VF Rx queues is not yet implemented\n");
}
}
/**
* ice_determine_res
* @pf: pointer to the PF structure
* @avail_res: available resources in the PF structure
* @max_res: maximum resources that can be given per VF
* @min_res: minimum resources that can be given per VF
*
* Returns non-zero value if resources (queues/vectors) are available or
* returns zero if PF cannot accommodate for all num_alloc_vfs.
*/
static int
ice_determine_res(struct ice_pf *pf, u16 avail_res, u16 max_res, u16 min_res)
{
bool checked_min_res = false;
int res;
/* start by checking if PF can assign max number of resources for
* all num_alloc_vfs.
* if yes, return number per VF
* If no, divide by 2 and roundup, check again
* repeat the loop till we reach a point where even minimum resources
* are not available, in that case return 0
*/
res = max_res;
while ((res >= min_res) && !checked_min_res) {
int num_all_res;
num_all_res = pf->num_alloc_vfs * res;
if (num_all_res <= avail_res)
return res;
if (res == min_res)
checked_min_res = true;
res = DIV_ROUND_UP(res, 2);
}
return 0;
}
/**
* ice_calc_vf_reg_idx - Calculate the VF's register index in the PF space
* @vf: VF to calculate the register index for
* @q_vector: a q_vector associated to the VF
*/
int ice_calc_vf_reg_idx(struct ice_vf *vf, struct ice_q_vector *q_vector)
{
struct ice_pf *pf;
if (!vf || !q_vector)
return -EINVAL;
pf = vf->pf;
/* always add one to account for the OICR being the first MSIX */
return pf->sriov_base_vector + pf->num_vf_msix * vf->vf_id +
q_vector->v_idx + 1;
}
/**
* ice_get_max_valid_res_idx - Get the max valid resource index
* @res: pointer to the resource to find the max valid index for
*
* Start from the end of the ice_res_tracker and return right when we find the
* first res->list entry with the ICE_RES_VALID_BIT set. This function is only
* valid for SR-IOV because it is the only consumer that manipulates the
* res->end and this is always called when res->end is set to res->num_entries.
*/
static int ice_get_max_valid_res_idx(struct ice_res_tracker *res)
{
int i;
if (!res)
return -EINVAL;
for (i = res->num_entries - 1; i >= 0; i--)
if (res->list[i] & ICE_RES_VALID_BIT)
return i;
return 0;
}
/**
* ice_sriov_set_msix_res - Set any used MSIX resources
* @pf: pointer to PF structure
* @num_msix_needed: number of MSIX vectors needed for all SR-IOV VFs
*
* This function allows SR-IOV resources to be taken from the end of the PF's
* allowed HW MSIX vectors so in many cases the irq_tracker will not
* be needed. In these cases we just set the pf->sriov_base_vector and return
* success.
*
* If SR-IOV needs to use any pf->irq_tracker entries it updates the
* irq_tracker->end based on the first entry needed for SR-IOV. This makes it
* so any calls to ice_get_res() using the irq_tracker will not try to use
* resources at or beyond the newly set value.
*
* Return 0 on success, and -EINVAL when there are not enough MSIX vectors in
* in the PF's space available for SR-IOV.
*/
static int ice_sriov_set_msix_res(struct ice_pf *pf, u16 num_msix_needed)
{
int max_valid_res_idx = ice_get_max_valid_res_idx(pf->irq_tracker);
u16 pf_total_msix_vectors =
pf->hw.func_caps.common_cap.num_msix_vectors;
struct ice_res_tracker *res = pf->irq_tracker;
int sriov_base_vector;
if (max_valid_res_idx < 0)
return max_valid_res_idx;
sriov_base_vector = pf_total_msix_vectors - num_msix_needed;
/* make sure we only grab irq_tracker entries from the list end and
* that we have enough available MSIX vectors
*/
if (sriov_base_vector <= max_valid_res_idx)
return -EINVAL;
pf->sriov_base_vector = sriov_base_vector;
/* dip into irq_tracker entries and update used resources */
if (num_msix_needed > (pf_total_msix_vectors - res->num_entries)) {
pf->num_avail_sw_msix -=
res->num_entries - pf->sriov_base_vector;
res->end = pf->sriov_base_vector;
}
return 0;
}
/**
* ice_check_avail_res - check if vectors and queues are available
* @pf: pointer to the PF structure
*
* This function is where we calculate actual number of resources for VF VSIs,
* we don't reserve ahead of time during probe. Returns success if vectors and
* queues resources are available, otherwise returns error code
*/
static int ice_check_avail_res(struct ice_pf *pf)
{
int max_valid_res_idx = ice_get_max_valid_res_idx(pf->irq_tracker);
u16 num_msix, num_txq, num_rxq, num_avail_msix;
if (!pf->num_alloc_vfs || max_valid_res_idx < 0)
return -EINVAL;
/* add 1 to max_valid_res_idx to account for it being 0-based */
num_avail_msix = pf->hw.func_caps.common_cap.num_msix_vectors -
(max_valid_res_idx + 1);
/* Grab from HW interrupts common pool
* Note: By the time the user decides it needs more vectors in a VF
* its already too late since one must decide this prior to creating the
* VF interface. So the best we can do is take a guess as to what the
* user might want.
*
* We have two policies for vector allocation:
* 1. if num_alloc_vfs is from 1 to 16, then we consider this as small
* number of NFV VFs used for NFV appliances, since this is a special
* case, we try to assign maximum vectors per VF (65) as much as
* possible, based on determine_resources algorithm.
* 2. if num_alloc_vfs is from 17 to 256, then its large number of
* regular VFs which are not used for any special purpose. Hence try to
* grab default interrupt vectors (5 as supported by AVF driver).
*/
if (pf->num_alloc_vfs <= 16) {
num_msix = ice_determine_res(pf, num_avail_msix,
ICE_MAX_INTR_PER_VF,
ICE_MIN_INTR_PER_VF);
} else if (pf->num_alloc_vfs <= ICE_MAX_VF_COUNT) {
num_msix = ice_determine_res(pf, num_avail_msix,
ICE_DFLT_INTR_PER_VF,
ICE_MIN_INTR_PER_VF);
} else {
dev_err(&pf->pdev->dev,
"Number of VFs %d exceeds max VF count %d\n",
pf->num_alloc_vfs, ICE_MAX_VF_COUNT);
return -EIO;
}
if (!num_msix)
return -EIO;
/* Grab from the common pool
* start by requesting Default queues (4 as supported by AVF driver),
* Note that, the main difference between queues and vectors is, latter
* can only be reserved at init time but queues can be requested by VF
* at runtime through Virtchnl, that is the reason we start by reserving
* few queues.
*/
num_txq = ice_determine_res(pf, ice_get_avail_txq_count(pf),
ICE_DFLT_QS_PER_VF, ICE_MIN_QS_PER_VF);
num_rxq = ice_determine_res(pf, ice_get_avail_rxq_count(pf),
ICE_DFLT_QS_PER_VF, ICE_MIN_QS_PER_VF);
if (!num_txq || !num_rxq)
return -EIO;
if (ice_sriov_set_msix_res(pf, num_msix * pf->num_alloc_vfs))
return -EINVAL;
/* since AVF driver works with only queue pairs which means, it expects
* to have equal number of Rx and Tx queues, so take the minimum of
* available Tx or Rx queues
*/
pf->num_vf_qps = min_t(int, num_txq, num_rxq);
pf->num_vf_msix = num_msix;
return 0;
}
/**
* ice_cleanup_and_realloc_vf - Clean up VF and reallocate resources after reset
* @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. Reallocate VF resources back to make
* VF state active
*/
static void ice_cleanup_and_realloc_vf(struct ice_vf *vf)
{
struct ice_pf *pf = vf->pf;
struct ice_hw *hw;
u32 reg;
hw = &pf->hw;
/* PF software completes the flow by notifying VF that reset flow is
* completed. This is done by enabling hardware by clearing the reset
* bit in the VPGEN_VFRTRIG reg and setting VFR_STATE in the VFGEN_RSTAT
* register to VFR completed (done at the end of this function)
* 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 ice_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, VPGEN_VFRTRIG(vf->vf_id));
reg &= ~VPGEN_VFRTRIG_VFSWR_M;
wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg);
/* reallocate VF resources to finish resetting the VSI state */
if (!ice_alloc_vf_res(vf)) {
ice_ena_vf_mappings(vf);
set_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);
clear_bit(ICE_VF_STATE_DIS, vf->vf_states);
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, VFGEN_RSTAT(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
}
/**
* ice_vf_set_vsi_promisc - set given VF VSI to given promiscuous mode(s)
* @vf: pointer to the VF info
* @vsi: the VSI being configured
* @promisc_m: mask of promiscuous config bits
* @rm_promisc: promisc flag request from the VF to remove or add filter
*
* This function configures VF VSI promiscuous mode, based on the VF requests,
* for Unicast, Multicast and VLAN
*/
static enum ice_status
ice_vf_set_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m,
bool rm_promisc)
{
struct ice_pf *pf = vf->pf;
enum ice_status status = 0;
struct ice_hw *hw;
hw = &pf->hw;
if (vf->num_vlan) {
status = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_m,
rm_promisc);
} else if (vf->port_vlan_id) {
if (rm_promisc)
status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
vf->port_vlan_id);
else
status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
vf->port_vlan_id);
} else {
if (rm_promisc)
status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
0);
else
status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
0);
}
return status;
}
/**
* ice_config_res_vfs - Finalize allocation of VFs resources in one go
* @pf: pointer to the PF structure
*
* This function is being called as last part of resetting all VFs, or when
* configuring VFs for the first time, where there is no resource to be freed
* Returns true if resources were properly allocated for all VFs, and false
* otherwise.
*/
static bool ice_config_res_vfs(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
int v;
if (ice_check_avail_res(pf)) {
dev_err(&pf->pdev->dev,
"Cannot allocate VF resources, try with fewer number of VFs\n");
return false;
}
/* rearm global interrupts */
if (test_and_clear_bit(__ICE_OICR_INTR_DIS, pf->state))
ice_irq_dynamic_ena(hw, NULL, NULL);
/* Finish resetting each VF and allocate resources */
for (v = 0; v < pf->num_alloc_vfs; v++) {
struct ice_vf *vf = &pf->vf[v];
vf->num_vf_qs = pf->num_vf_qps;
dev_dbg(&pf->pdev->dev,
"VF-id %d has %d queues configured\n",
vf->vf_id, vf->num_vf_qs);
ice_cleanup_and_realloc_vf(vf);
}
ice_flush(hw);
clear_bit(__ICE_VF_DIS, pf->state);
return true;
}
/**
* ice_reset_all_vfs - reset all allocated VFs in one go
* @pf: pointer to the PF structure
* @is_vflr: true if VFLR was issued, false if not
*
* 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 ice_reset_all_vfs(struct ice_pf *pf, bool is_vflr)
{
struct ice_hw *hw = &pf->hw;
struct ice_vf *vf;
int v, i;
/* 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(__ICE_VF_DIS, pf->state))
return false;
/* Begin reset on all VFs at once */
for (v = 0; v < pf->num_alloc_vfs; v++)
ice_trigger_vf_reset(&pf->vf[v], is_vflr, true);
for (v = 0; v < pf->num_alloc_vfs; v++) {
struct ice_vsi *vsi;
vf = &pf->vf[v];
vsi = pf->vsi[vf->lan_vsi_idx];
if (test_bit(ICE_VF_STATE_QS_ENA, vf->vf_states))
ice_dis_vf_qs(vf);
ice_dis_vsi_txq(vsi->port_info, vsi->idx, 0, 0, NULL, NULL,
NULL, ICE_VF_RESET, vf->vf_id, NULL);
}
/* 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++) {
/* Check each VF in sequence */
while (v < pf->num_alloc_vfs) {
u32 reg;
vf = &pf->vf[v];
reg = rd32(hw, VPGEN_VFRSTAT(vf->vf_id));
if (!(reg & VPGEN_VFRSTAT_VFRD_M)) {
/* only delay if the check failed */
usleep_range(10, 20);
break;
}
/* If the current VF has finished resetting, move on
* to the next VF in sequence.
*/
v++;
}
}
/* 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_warn(&pf->pdev->dev, "VF reset check timeout\n");
/* free VF resources to begin resetting the VSI state */
for (v = 0; v < pf->num_alloc_vfs; v++) {
vf = &pf->vf[v];
ice_free_vf_res(vf);
/* Free VF queues as well, and reallocate later.
* If a given VF has different number of queues
* configured, the request for update will come
* via mailbox communication.
*/
vf->num_vf_qs = 0;
}
if (ice_sriov_free_msix_res(pf))
dev_err(&pf->pdev->dev,
"Failed to free MSIX resources used by SR-IOV\n");
if (!ice_config_res_vfs(pf))
return false;
return true;
}
/**
* ice_reset_vf - Reset a particular VF
* @vf: pointer to the VF structure
* @is_vflr: true if VFLR was issued, false if not
*
* Returns true if the VF is reset, false otherwise.
*/
static bool ice_reset_vf(struct ice_vf *vf, bool is_vflr)
{
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
struct ice_hw *hw;
bool rsd = false;
u8 promisc_m;
u32 reg;
int i;
/* If the PF has been disabled, there is no need resetting VF until
* PF is active again.
*/
if (test_bit(__ICE_VF_DIS, pf->state))
return false;
/* If the VF has been disabled, this means something else is
* resetting the VF, so we shouldn't continue. Otherwise, set
* disable VF state bit for actual reset, and continue.
*/
if (test_and_set_bit(ICE_VF_STATE_DIS, vf->vf_states))
return false;
ice_trigger_vf_reset(vf, is_vflr, false);
vsi = pf->vsi[vf->lan_vsi_idx];
if (test_bit(ICE_VF_STATE_QS_ENA, vf->vf_states))
ice_dis_vf_qs(vf);
/* Call Disable LAN Tx queue AQ whether or not queues are
* enabled. This is needed for successful completion of VFR.
*/
ice_dis_vsi_txq(vsi->port_info, vsi->idx, 0, 0, NULL, NULL,
NULL, ICE_VF_RESET, vf->vf_id, NULL);
hw = &pf->hw;
/* 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.
*/
reg = rd32(hw, VPGEN_VFRSTAT(vf->vf_id));
if (reg & VPGEN_VFRSTAT_VFRD_M) {
rsd = true;
break;
}
/* only sleep if the reset is not done */
usleep_range(10, 20);
}
/* Display a warning if VF didn't manage to reset in time, but need to
* continue on with the operation.
*/
if (!rsd)
dev_warn(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
vf->vf_id);
/* disable promiscuous modes in case they were enabled
* ignore any error if disabling process failed
*/
if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) ||
test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states)) {
if (vf->port_vlan_id || vf->num_vlan)
promisc_m = ICE_UCAST_VLAN_PROMISC_BITS;
else
promisc_m = ICE_UCAST_PROMISC_BITS;
vsi = pf->vsi[vf->lan_vsi_idx];
if (ice_vf_set_vsi_promisc(vf, vsi, promisc_m, true))
dev_err(&pf->pdev->dev, "disabling promiscuous mode failed\n");
}
/* free VF resources to begin resetting the VSI state */
ice_free_vf_res(vf);
ice_cleanup_and_realloc_vf(vf);
ice_flush(hw);
return true;
}
/**
* ice_vc_notify_link_state - Inform all VFs on a PF of link status
* @pf: pointer to the PF structure
*/
void ice_vc_notify_link_state(struct ice_pf *pf)
{
int i;
for (i = 0; i < pf->num_alloc_vfs; i++)
ice_vc_notify_vf_link_state(&pf->vf[i]);
}
/**
* ice_vc_notify_reset - Send pending reset message to all VFs
* @pf: pointer to the PF structure
*
* indicate a pending reset to all VFs on a given PF
*/
void ice_vc_notify_reset(struct ice_pf *pf)
{
struct virtchnl_pf_event pfe;
if (!pf->num_alloc_vfs)
return;
pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
ice_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, VIRTCHNL_STATUS_SUCCESS,
(u8 *)&pfe, sizeof(struct virtchnl_pf_event));
}
/**
* ice_vc_notify_vf_reset - Notify VF of a reset event
* @vf: pointer to the VF structure
*/
static void ice_vc_notify_vf_reset(struct ice_vf *vf)
{
struct virtchnl_pf_event pfe;
/* 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(ICE_VF_STATE_INIT, vf->vf_states) &&
!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states))
return;
pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
ice_aq_send_msg_to_vf(&vf->pf->hw, vf->vf_id, VIRTCHNL_OP_EVENT,
VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe, sizeof(pfe),
NULL);
}
/**
* ice_alloc_vfs - Allocate and set up VFs resources
* @pf: pointer to the PF structure
* @num_alloc_vfs: number of VFs to allocate
*/
static int ice_alloc_vfs(struct ice_pf *pf, u16 num_alloc_vfs)
{
struct ice_hw *hw = &pf->hw;
struct ice_vf *vfs;
int i, ret;
/* Disable global interrupt 0 so we don't try to handle the VFLR. */
wr32(hw, GLINT_DYN_CTL(pf->oicr_idx),
ICE_ITR_NONE << GLINT_DYN_CTL_ITR_INDX_S);
set_bit(__ICE_OICR_INTR_DIS, pf->state);
ice_flush(hw);
ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
if (ret) {
pf->num_alloc_vfs = 0;
goto err_unroll_intr;
}
/* allocate memory */
vfs = devm_kcalloc(&pf->pdev->dev, num_alloc_vfs, sizeof(*vfs),
GFP_KERNEL);
if (!vfs) {
ret = -ENOMEM;
goto err_pci_disable_sriov;
}
pf->vf = vfs;
/* apply default profile */
for (i = 0; i < num_alloc_vfs; i++) {
vfs[i].pf = pf;
vfs[i].vf_sw_id = pf->first_sw;
vfs[i].vf_id = i;
/* assign default capabilities */
set_bit(ICE_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
vfs[i].spoofchk = true;
}
pf->num_alloc_vfs = num_alloc_vfs;
/* VF resources get allocated with initialization */
if (!ice_config_res_vfs(pf)) {
ret = -EIO;
goto err_unroll_sriov;
}
return ret;
err_unroll_sriov:
pf->vf = NULL;
devm_kfree(&pf->pdev->dev, vfs);
vfs = NULL;
pf->num_alloc_vfs = 0;
err_pci_disable_sriov:
pci_disable_sriov(pf->pdev);
err_unroll_intr:
/* rearm interrupts here */
ice_irq_dynamic_ena(hw, NULL, NULL);
clear_bit(__ICE_OICR_INTR_DIS, pf->state);
return ret;
}
/**
* ice_pf_state_is_nominal - checks the PF for nominal state
* @pf: pointer to PF to check
*
* Check the PF's state for a collection of bits that would indicate
* the PF is in a state that would inhibit normal operation for
* driver functionality.
*
* Returns true if PF is in a nominal state.
* Returns false otherwise
*/
static bool ice_pf_state_is_nominal(struct ice_pf *pf)
{
DECLARE_BITMAP(check_bits, __ICE_STATE_NBITS) = { 0 };
if (!pf)
return false;
bitmap_set(check_bits, 0, __ICE_STATE_NOMINAL_CHECK_BITS);
if (bitmap_intersects(pf->state, check_bits, __ICE_STATE_NBITS))
return false;
return true;
}
/**
* ice_pci_sriov_ena - Enable or change number of VFs
* @pf: pointer to the PF structure
* @num_vfs: number of VFs to allocate
*/
static int ice_pci_sriov_ena(struct ice_pf *pf, int num_vfs)
{
int pre_existing_vfs = pci_num_vf(pf->pdev);
struct device *dev = &pf->pdev->dev;
int err;
if (!ice_pf_state_is_nominal(pf)) {
dev_err(dev, "Cannot enable SR-IOV, device not ready\n");
return -EBUSY;
}
if (!test_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags)) {
dev_err(dev, "This device is not capable of SR-IOV\n");
return -ENODEV;
}
if (pre_existing_vfs && pre_existing_vfs != num_vfs)
ice_free_vfs(pf);
else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
return num_vfs;
if (num_vfs > pf->num_vfs_supported) {
dev_err(dev, "Can't enable %d VFs, max VFs supported is %d\n",
num_vfs, pf->num_vfs_supported);
return -ENOTSUPP;
}
dev_info(dev, "Allocating %d VFs\n", num_vfs);
err = ice_alloc_vfs(pf, num_vfs);
if (err) {
dev_err(dev, "Failed to enable SR-IOV: %d\n", err);
return err;
}
set_bit(ICE_FLAG_SRIOV_ENA, pf->flags);
return num_vfs;
}
/**
* ice_sriov_configure - Enable or change number of VFs via sysfs
* @pdev: pointer to a pci_dev structure
* @num_vfs: number of VFs to allocate
*
* This function is called when the user updates the number of VFs in sysfs.
*/
int ice_sriov_configure(struct pci_dev *pdev, int num_vfs)
{
struct ice_pf *pf = pci_get_drvdata(pdev);
if (ice_is_safe_mode(pf)) {
dev_err(&pf->pdev->dev,
"SR-IOV cannot be configured - Device is in Safe Mode\n");
return -EOPNOTSUPP;
}
if (num_vfs)
return ice_pci_sriov_ena(pf, num_vfs);
if (!pci_vfs_assigned(pdev)) {
ice_free_vfs(pf);
} else {
dev_err(&pf->pdev->dev,
"can't free VFs because some are assigned to VMs.\n");
return -EBUSY;
}
return 0;
}
/**
* ice_process_vflr_event - Free VF resources via IRQ calls
* @pf: pointer to the PF structure
*
* called from the VFLR IRQ handler to
* free up VF resources and state variables
*/
void ice_process_vflr_event(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
int vf_id;
u32 reg;
if (!test_and_clear_bit(__ICE_VFLR_EVENT_PENDING, pf->state) ||
!pf->num_alloc_vfs)
return;
for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
struct ice_vf *vf = &pf->vf[vf_id];
u32 reg_idx, bit_idx;
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 */
reg = rd32(hw, GLGEN_VFLRSTAT(reg_idx));
if (reg & BIT(bit_idx))
/* GLGEN_VFLRSTAT bit will be cleared in ice_reset_vf */
ice_reset_vf(vf, true);
}
}
/**
* ice_vc_dis_vf - Disable a given VF via SW reset
* @vf: pointer to the VF info
*
* Disable the VF through a SW reset
*/
static void ice_vc_dis_vf(struct ice_vf *vf)
{
ice_vc_notify_vf_reset(vf);
ice_reset_vf(vf, false);
}
/**
* ice_vc_send_msg_to_vf - Send message 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
ice_vc_send_msg_to_vf(struct ice_vf *vf, u32 v_opcode,
enum virtchnl_status_code v_retval, u8 *msg, u16 msglen)
{
enum ice_status aq_ret;
struct ice_pf *pf;
/* validate the request */
if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
return -EINVAL;
pf = vf->pf;
/* single place to detect unsuccessful return values */
if (v_retval) {
vf->num_inval_msgs++;
dev_info(&pf->pdev->dev, "VF %d failed opcode %d, retval: %d\n",
vf->vf_id, v_opcode, v_retval);
if (vf->num_inval_msgs > ICE_DFLT_NUM_INVAL_MSGS_ALLOWED) {
dev_err(&pf->pdev->dev,
"Number of invalid messages exceeded for VF %d\n",
vf->vf_id);
dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
set_bit(ICE_VF_STATE_DIS, vf->vf_states);
return -EIO;
}
} else {
vf->num_valid_msgs++;
/* reset the invalid counter, if a valid message is received. */
vf->num_inval_msgs = 0;
}
aq_ret = ice_aq_send_msg_to_vf(&pf->hw, vf->vf_id, v_opcode, v_retval,
msg, msglen, NULL);
if (aq_ret && pf->hw.mailboxq.sq_last_status != ICE_AQ_RC_ENOSYS) {
dev_info(&pf->pdev->dev,
"Unable to send the message to VF %d ret %d aq_err %d\n",
vf->vf_id, aq_ret, pf->hw.mailboxq.sq_last_status);
return -EIO;
}
return 0;
}
/**
* ice_vc_get_ver_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 ice_vc_get_ver_msg(struct ice_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 ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
VIRTCHNL_STATUS_SUCCESS, (u8 *)&info,
sizeof(struct virtchnl_version_info));
}
/**
* ice_vc_get_vf_res_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* called from the VF to request its resources
*/
static int ice_vc_get_vf_res_msg(struct ice_vf *vf, u8 *msg)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_vf_resource *vfres = NULL;
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
int len = 0;
int ret;
if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
len = sizeof(struct virtchnl_vf_resource);
vfres = devm_kzalloc(&pf->pdev->dev, len, GFP_KERNEL);
if (!vfres) {
v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
len = 0;
goto err;
}
if (VF_IS_V11(&vf->vf_ver))
vf->driver_caps = *(u32 *)msg;
else
vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
VIRTCHNL_VF_OFFLOAD_RSS_REG |
VIRTCHNL_VF_OFFLOAD_VLAN;
vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
if (!vsi->info.pvid)
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
} else {
if (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 (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 (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)
vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
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_CAP_ADV_LINK_SPEED)
vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
vfres->num_vsis = 1;
/* Tx and Rx queue are equal for VF */
vfres->num_queue_pairs = vsi->num_txq;
vfres->max_vectors = pf->num_vf_msix;
vfres->rss_key_size = ICE_VSIQF_HKEY_ARRAY_SIZE;
vfres->rss_lut_size = ICE_VSIQF_HLUT_ARRAY_SIZE;
vfres->vsi_res[0].vsi_id = vf->lan_vsi_num;
vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
vfres->vsi_res[0].num_queue_pairs = vsi->num_txq;
ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
vf->dflt_lan_addr.addr);
set_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);
err:
/* send the response back to the VF */
ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES, v_ret,
(u8 *)vfres, len);
devm_kfree(&pf->pdev->dev, vfres);
return ret;
}
/**
* ice_vc_reset_vf_msg
* @vf: pointer to the VF info
*
* called from the VF to reset itself,
* unlike other virtchnl messages, PF driver
* doesn't send the response back to the VF
*/
static void ice_vc_reset_vf_msg(struct ice_vf *vf)
{
if (test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states))
ice_reset_vf(vf, false);
}
/**
* ice_find_vsi_from_id
* @pf: the PF structure to search for the VSI
* @id: ID of the VSI it is searching for
*
* searches for the VSI with the given ID
*/
static struct ice_vsi *ice_find_vsi_from_id(struct ice_pf *pf, u16 id)
{
int i;
ice_for_each_vsi(pf, i)
if (pf->vsi[i] && pf->vsi[i]->vsi_num == id)
return pf->vsi[i];
return NULL;
}
/**
* ice_vc_isvalid_vsi_id
* @vf: pointer to the VF info
* @vsi_id: VF relative VSI ID
*
* check for the valid VSI ID
*/
static bool ice_vc_isvalid_vsi_id(struct ice_vf *vf, u16 vsi_id)
{
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
vsi = ice_find_vsi_from_id(pf, vsi_id);
return (vsi && (vsi->vf_id == vf->vf_id));
}
/**
* ice_vc_isvalid_q_id
* @vf: pointer to the VF info
* @vsi_id: VSI ID
* @qid: VSI relative queue ID
*
* check for the valid queue ID
*/
static bool ice_vc_isvalid_q_id(struct ice_vf *vf, u16 vsi_id, u8 qid)
{
struct ice_vsi *vsi = ice_find_vsi_from_id(vf->pf, vsi_id);
/* allocated Tx and Rx queues should be always equal for VF VSI */
return (vsi && (qid < vsi->alloc_txq));
}
/**
* ice_vc_isvalid_ring_len
* @ring_len: length of ring
*
* check for the valid ring count, should be multiple of ICE_REQ_DESC_MULTIPLE
* or zero
*/
static bool ice_vc_isvalid_ring_len(u16 ring_len)
{
return ring_len == 0 ||
(ring_len >= ICE_MIN_NUM_DESC &&
ring_len <= ICE_MAX_NUM_DESC &&
!(ring_len % ICE_REQ_DESC_MULTIPLE));
}
/**
* ice_vc_config_rss_key
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* Configure the VF's RSS key
*/
static int ice_vc_config_rss_key(struct ice_vf *vf, u8 *msg)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_rss_key *vrk =
(struct virtchnl_rss_key *)msg;
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi = NULL;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (!ice_vc_isvalid_vsi_id(vf, vrk->vsi_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (vrk->key_len != ICE_VSIQF_HKEY_ARRAY_SIZE) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (ice_set_rss(vsi, vrk->key, NULL, 0))
v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
error_param:
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY, v_ret,
NULL, 0);
}
/**
* ice_vc_config_rss_lut
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* Configure the VF's RSS LUT
*/
static int ice_vc_config_rss_lut(struct ice_vf *vf, u8 *msg)
{
struct virtchnl_rss_lut *vrl = (struct virtchnl_rss_lut *)msg;
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi = NULL;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (!ice_vc_isvalid_vsi_id(vf, vrl->vsi_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (vrl->lut_entries != ICE_VSIQF_HLUT_ARRAY_SIZE) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (ice_set_rss(vsi, NULL, vrl->lut, ICE_VSIQF_HLUT_ARRAY_SIZE))
v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
error_param:
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT, v_ret,
NULL, 0);
}
/**
* ice_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 ice_vc_get_stats_msg(struct ice_vf *vf, u8 *msg)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_queue_select *vqs =
(struct virtchnl_queue_select *)msg;
struct ice_pf *pf = vf->pf;
struct ice_eth_stats stats;
struct ice_vsi *vsi;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
memset(&stats, 0, sizeof(struct ice_eth_stats));
ice_update_eth_stats(vsi);
stats = vsi->eth_stats;
error_param:
/* send the response to the VF */
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, v_ret,
(u8 *)&stats, sizeof(stats));
}
/**
* ice_vc_ena_qs_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 ice_vc_ena_qs_msg(struct ice_vf *vf, u8 *msg)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_queue_select *vqs =
(struct virtchnl_queue_select *)msg;
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
unsigned long q_map;
u16 vf_q_id;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (!vqs->rx_queues && !vqs->tx_queues) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (vqs->rx_queues > ICE_MAX_BASE_QS_PER_VF ||
vqs->tx_queues > ICE_MAX_BASE_QS_PER_VF) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
/* Enable only Rx rings, Tx rings were enabled by the FW when the
* Tx queue group list was configured and the context bits were
* programmed using ice_vsi_cfg_txqs
*/
q_map = vqs->rx_queues;
for_each_set_bit(vf_q_id, &q_map, ICE_MAX_BASE_QS_PER_VF) {
if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
/* Skip queue if enabled */
if (test_bit(vf_q_id, vf->rxq_ena))
continue;
if (ice_vsi_ctrl_rx_ring(vsi, true, vf_q_id)) {
dev_err(&vsi->back->pdev->dev,
"Failed to enable Rx ring %d on VSI %d\n",
vf_q_id, vsi->vsi_num);
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
set_bit(vf_q_id, vf->rxq_ena);
vf->num_qs_ena++;
}
vsi = pf->vsi[vf->lan_vsi_idx];
q_map = vqs->tx_queues;
for_each_set_bit(vf_q_id, &q_map, ICE_MAX_BASE_QS_PER_VF) {
if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
/* Skip queue if enabled */
if (test_bit(vf_q_id, vf->txq_ena))
continue;
set_bit(vf_q_id, vf->txq_ena);
vf->num_qs_ena++;
}
/* Set flag to indicate that queues are enabled */
if (v_ret == VIRTCHNL_STATUS_SUCCESS)
set_bit(ICE_VF_STATE_QS_ENA, vf->vf_states);
error_param:
/* send the response to the VF */
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES, v_ret,
NULL, 0);
}
/**
* ice_vc_dis_qs_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 ice_vc_dis_qs_msg(struct ice_vf *vf, u8 *msg)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_queue_select *vqs =
(struct virtchnl_queue_select *)msg;
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
unsigned long q_map;
u16 vf_q_id;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) &&
!test_bit(ICE_VF_STATE_QS_ENA, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (!vqs->rx_queues && !vqs->tx_queues) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (vqs->rx_queues > ICE_MAX_BASE_QS_PER_VF ||
vqs->tx_queues > ICE_MAX_BASE_QS_PER_VF) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (vqs->tx_queues) {
q_map = vqs->tx_queues;
for_each_set_bit(vf_q_id, &q_map, ICE_MAX_BASE_QS_PER_VF) {
struct ice_ring *ring = vsi->tx_rings[vf_q_id];
struct ice_txq_meta txq_meta = { 0 };
if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
/* Skip queue if not enabled */
if (!test_bit(vf_q_id, vf->txq_ena))
continue;
ice_fill_txq_meta(vsi, ring, &txq_meta);
if (ice_vsi_stop_tx_ring(vsi, ICE_NO_RESET, vf->vf_id,
ring, &txq_meta)) {
dev_err(&vsi->back->pdev->dev,
"Failed to stop Tx ring %d on VSI %d\n",
vf_q_id, vsi->vsi_num);
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
/* Clear enabled queues flag */
clear_bit(vf_q_id, vf->txq_ena);
vf->num_qs_ena--;
}
}
if (vqs->rx_queues) {
q_map = vqs->rx_queues;
for_each_set_bit(vf_q_id, &q_map, ICE_MAX_BASE_QS_PER_VF) {
if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
/* Skip queue if not enabled */
if (!test_bit(vf_q_id, vf->rxq_ena))
continue;
if (ice_vsi_ctrl_rx_ring(vsi, false, vf_q_id)) {
dev_err(&vsi->back->pdev->dev,
"Failed to stop Rx ring %d on VSI %d\n",
vf_q_id, vsi->vsi_num);
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
/* Clear enabled queues flag */
clear_bit(vf_q_id, vf->rxq_ena);
vf->num_qs_ena--;
}
}
/* Clear enabled queues flag */
if (v_ret == VIRTCHNL_STATUS_SUCCESS && !vf->num_qs_ena)
clear_bit(ICE_VF_STATE_QS_ENA, vf->vf_states);
error_param:
/* send the response to the VF */
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES, v_ret,
NULL, 0);
}
/**
* ice_vc_cfg_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 ice_vc_cfg_irq_map_msg(struct ice_vf *vf, u8 *msg)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_irq_map_info *irqmap_info;
u16 vsi_id, vsi_q_id, vector_id;
struct virtchnl_vector_map *map;
struct ice_pf *pf = vf->pf;
u16 num_q_vectors_mapped;
struct ice_vsi *vsi;
unsigned long qmap;
int i;
irqmap_info = (struct virtchnl_irq_map_info *)msg;
num_q_vectors_mapped = irqmap_info->num_vectors;
/* Check to make sure number of VF vectors mapped is not greater than
* number of VF vectors originally allocated, and check that
* there is actually at least a single VF queue vector mapped
*/
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) ||
pf->num_vf_msix < num_q_vectors_mapped ||
!irqmap_info->num_vectors) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
for (i = 0; i < num_q_vectors_mapped; i++) {
struct ice_q_vector *q_vector;
map = &irqmap_info->vecmap[i];
vector_id = map->vector_id;
vsi_id = map->vsi_id;
/* validate msg params */
if (!(vector_id < pf->hw.func_caps.common_cap
.num_msix_vectors) || !ice_vc_isvalid_vsi_id(vf, vsi_id) ||
(!vector_id && (map->rxq_map || map->txq_map))) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
/* No need to map VF miscellaneous or rogue vector */
if (!vector_id)
continue;
/* Subtract non queue vector from vector_id passed by VF
* to get actual number of VSI queue vector array index
*/
q_vector = vsi->q_vectors[vector_id - ICE_NONQ_VECS_VF];
if (!q_vector) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
/* lookout for the invalid queue index */
qmap = map->rxq_map;
q_vector->num_ring_rx = 0;
for_each_set_bit(vsi_q_id, &qmap, ICE_MAX_BASE_QS_PER_VF) {
if (!ice_vc_isvalid_q_id(vf, vsi_id, vsi_q_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
q_vector->num_ring_rx++;
q_vector->rx.itr_idx = map->rxitr_idx;
vsi->rx_rings[vsi_q_id]->q_vector = q_vector;
ice_cfg_rxq_interrupt(vsi, vsi_q_id, vector_id,
q_vector->rx.itr_idx);
}
qmap = map->txq_map;
q_vector->num_ring_tx = 0;
for_each_set_bit(vsi_q_id, &qmap, ICE_MAX_BASE_QS_PER_VF) {
if (!ice_vc_isvalid_q_id(vf, vsi_id, vsi_q_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
q_vector->num_ring_tx++;
q_vector->tx.itr_idx = map->txitr_idx;
vsi->tx_rings[vsi_q_id]->q_vector = q_vector;
ice_cfg_txq_interrupt(vsi, vsi_q_id, vector_id,
q_vector->tx.itr_idx);
}
}
error_param:
/* send the response to the VF */
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP, v_ret,
NULL, 0);
}
/**
* ice_vc_cfg_qs_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 ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_vsi_queue_config_info *qci =
(struct virtchnl_vsi_queue_config_info *)msg;
struct virtchnl_queue_pair_info *qpi;
u16 num_rxq = 0, num_txq = 0;
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
int i;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (!ice_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (qci->num_queue_pairs > ICE_MAX_BASE_QS_PER_VF ||
qci->num_queue_pairs > min_t(u16, vsi->alloc_txq, vsi->alloc_rxq)) {
dev_err(&pf->pdev->dev,
"VF-%d requesting more than supported number of queues: %d\n",
vf->vf_id, min_t(u16, vsi->alloc_txq, vsi->alloc_rxq));
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
for (i = 0; i < qci->num_queue_pairs; i++) {
qpi = &qci->qpair[i];
if (qpi->txq.vsi_id != qci->vsi_id ||
qpi->rxq.vsi_id != qci->vsi_id ||
qpi->rxq.queue_id != qpi->txq.queue_id ||
qpi->txq.headwb_enabled ||
!ice_vc_isvalid_ring_len(qpi->txq.ring_len) ||
!ice_vc_isvalid_ring_len(qpi->rxq.ring_len) ||
!ice_vc_isvalid_q_id(vf, qci->vsi_id, qpi->txq.queue_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
/* copy Tx queue info from VF into VSI */
if (qpi->txq.ring_len > 0) {
num_txq++;
vsi->tx_rings[i]->dma = qpi->txq.dma_ring_addr;
vsi->tx_rings[i]->count = qpi->txq.ring_len;
}
/* copy Rx queue info from VF into VSI */
if (qpi->rxq.ring_len > 0) {
num_rxq++;
vsi->rx_rings[i]->dma = qpi->rxq.dma_ring_addr;
vsi->rx_rings[i]->count = qpi->rxq.ring_len;
if (qpi->rxq.databuffer_size != 0 &&
(qpi->rxq.databuffer_size > ((16 * 1024) - 128) ||
qpi->rxq.databuffer_size < 1024)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi->rx_buf_len = qpi->rxq.databuffer_size;
vsi->rx_rings[i]->rx_buf_len = vsi->rx_buf_len;
if (qpi->rxq.max_pkt_size >= (16 * 1024) ||
qpi->rxq.max_pkt_size < 64) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
}
vsi->max_frame = qpi->rxq.max_pkt_size;
}
/* VF can request to configure less than allocated queues
* or default allocated queues. So update the VSI with new number
*/
vsi->num_txq = num_txq;
vsi->num_rxq = num_rxq;
/* All queues of VF VSI are in TC 0 */
vsi->tc_cfg.tc_info[0].qcount_tx = num_txq;
vsi->tc_cfg.tc_info[0].qcount_rx = num_rxq;
if (ice_vsi_cfg_lan_txqs(vsi) || ice_vsi_cfg_rxqs(vsi))
v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
error_param:
/* send the response to the VF */
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES, v_ret,
NULL, 0);
}
/**
* ice_is_vf_trusted
* @vf: pointer to the VF info
*/
static bool ice_is_vf_trusted(struct ice_vf *vf)
{
return test_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
}
/**
* ice_can_vf_change_mac
* @vf: pointer to the VF info
*
* Return true if the VF is allowed to change its MAC filters, false otherwise
*/
static bool ice_can_vf_change_mac(struct ice_vf *vf)
{
/* If the VF MAC address has been set administratively (via the
* ndo_set_vf_mac command), then deny permission to the VF to
* add/delete unicast MAC addresses, unless the VF is trusted
*/
if (vf->pf_set_mac && !ice_is_vf_trusted(vf))
return false;
return true;
}
/**
* ice_vc_handle_mac_addr_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
* @set: true if MAC filters are being set, false otherwise
*
* add guest MAC address filter
*/
static int
ice_vc_handle_mac_addr_msg(struct ice_vf *vf, u8 *msg, bool set)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_ether_addr_list *al =
(struct virtchnl_ether_addr_list *)msg;
struct ice_pf *pf = vf->pf;
enum virtchnl_ops vc_op;
enum ice_status status;
struct ice_vsi *vsi;
int mac_count = 0;
int i;
if (set)
vc_op = VIRTCHNL_OP_ADD_ETH_ADDR;
else
vc_op = VIRTCHNL_OP_DEL_ETH_ADDR;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) ||
!ice_vc_isvalid_vsi_id(vf, al->vsi_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto handle_mac_exit;
}
if (set && !ice_is_vf_trusted(vf) &&
(vf->num_mac + al->num_elements) > ICE_MAX_MACADDR_PER_VF) {
dev_err(&pf->pdev->dev,
"Can't add more MAC addresses, because VF-%d is not trusted, switch the VF to trusted mode in order to add more functionalities\n",
vf->vf_id);
/* There is no need to let VF know about not being trusted
* to add more MAC addr, so we can just return success message.
*/
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto handle_mac_exit;
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto handle_mac_exit;
}
for (i = 0; i < al->num_elements; i++) {
u8 *maddr = al->list[i].addr;
if (ether_addr_equal(maddr, vf->dflt_lan_addr.addr) ||
is_broadcast_ether_addr(maddr)) {
if (set) {
/* VF is trying to add filters that the PF
* already added. Just continue.
*/
dev_info(&pf->pdev->dev,
"MAC %pM already set for VF %d\n",
maddr, vf->vf_id);
continue;
} else {
/* VF can't remove dflt_lan_addr/bcast MAC */
dev_err(&pf->pdev->dev,
"VF can't remove default MAC address or MAC %pM programmed by PF for VF %d\n",
maddr, vf->vf_id);
continue;
}
}
/* check for the invalid cases and bail if necessary */
if (is_zero_ether_addr(maddr)) {
dev_err(&pf->pdev->dev,
"invalid MAC %pM provided for VF %d\n",
maddr, vf->vf_id);
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto handle_mac_exit;
}
if (is_unicast_ether_addr(maddr) &&
!ice_can_vf_change_mac(vf)) {
dev_err(&pf->pdev->dev,
"can't change unicast MAC for untrusted VF %d\n",
vf->vf_id);
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto handle_mac_exit;
}
/* program the updated filter list */
status = ice_vsi_cfg_mac_fltr(vsi, maddr, set);
if (status == ICE_ERR_DOES_NOT_EXIST ||
status == ICE_ERR_ALREADY_EXISTS) {
dev_info(&pf->pdev->dev,
"can't %s MAC filters %pM for VF %d, error %d\n",
set ? "add" : "remove", maddr, vf->vf_id,
status);
} else if (status) {
dev_err(&pf->pdev->dev,
"can't %s MAC filters for VF %d, error %d\n",
set ? "add" : "remove", vf->vf_id, status);
v_ret = ice_err_to_virt_err(status);
goto handle_mac_exit;
}
mac_count++;
}
/* Track number of MAC filters programmed for the VF VSI */
if (set)
vf->num_mac += mac_count;
else
vf->num_mac -= mac_count;
handle_mac_exit:
/* send the response to the VF */
return ice_vc_send_msg_to_vf(vf, vc_op, v_ret, NULL, 0);
}
/**
* ice_vc_add_mac_addr_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* add guest MAC address filter
*/
static int ice_vc_add_mac_addr_msg(struct ice_vf *vf, u8 *msg)
{
return ice_vc_handle_mac_addr_msg(vf, msg, true);
}
/**
* ice_vc_del_mac_addr_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* remove guest MAC address filter
*/
static int ice_vc_del_mac_addr_msg(struct ice_vf *vf, u8 *msg)
{
return ice_vc_handle_mac_addr_msg(vf, msg, false);
}
/**
* ice_vc_request_qs_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 queue pairs via virtchnl message response to VF.
*/
static int ice_vc_request_qs_msg(struct ice_vf *vf, u8 *msg)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_vf_res_request *vfres =
(struct virtchnl_vf_res_request *)msg;
u16 req_queues = vfres->num_queue_pairs;
struct ice_pf *pf = vf->pf;
u16 max_allowed_vf_queues;
u16 tx_rx_queue_left;
u16 cur_queues;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
cur_queues = vf->num_vf_qs;
tx_rx_queue_left = min_t(u16, ice_get_avail_txq_count(pf),
ice_get_avail_rxq_count(pf));
max_allowed_vf_queues = tx_rx_queue_left + cur_queues;
if (!req_queues) {
dev_err(&pf->pdev->dev,
"VF %d tried to request 0 queues. Ignoring.\n",
vf->vf_id);
} else if (req_queues > ICE_MAX_BASE_QS_PER_VF) {
dev_err(&pf->pdev->dev,
"VF %d tried to request more than %d queues.\n",
vf->vf_id, ICE_MAX_BASE_QS_PER_VF);
vfres->num_queue_pairs = ICE_MAX_BASE_QS_PER_VF;
} else if (req_queues > cur_queues &&
req_queues - cur_queues > tx_rx_queue_left) {
dev_warn(&pf->pdev->dev,
"VF %d requested %u more queues, but only %u left.\n",
vf->vf_id, req_queues - cur_queues, tx_rx_queue_left);
vfres->num_queue_pairs = min_t(u16, max_allowed_vf_queues,
ICE_MAX_BASE_QS_PER_VF);
} else {
/* request is successful, then reset VF */
vf->num_req_qs = req_queues;
ice_vc_dis_vf(vf);
dev_info(&pf->pdev->dev,
"VF %d granted request of %u queues.\n",
vf->vf_id, req_queues);
return 0;
}
error_param:
/* send the response to the VF */
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES,
v_ret, (u8 *)vfres, sizeof(*vfres));
}
/**
* ice_set_vf_port_vlan
* @netdev: network interface device structure
* @vf_id: VF identifier
* @vlan_id: VLAN ID being set
* @qos: priority setting
* @vlan_proto: VLAN protocol
*
* program VF Port VLAN ID and/or QoS
*/
int
ice_set_vf_port_vlan(struct net_device *netdev, int vf_id, u16 vlan_id, u8 qos,
__be16 vlan_proto)
{
u16 vlanprio = vlan_id | (qos << ICE_VLAN_PRIORITY_S);
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_pf *pf = np->vsi->back;
struct ice_vsi *vsi;
struct ice_vf *vf;
int ret = 0;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev, "invalid VF id: %d\n", vf_id);
return -EINVAL;
}
if (vlan_id > ICE_MAX_VLANID || qos > 7) {
dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
return -EINVAL;
}
if (vlan_proto != htons(ETH_P_8021Q)) {
dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
return -EPROTONOSUPPORT;
}
vf = &pf->vf[vf_id];
vsi = pf->vsi[vf->lan_vsi_idx];
if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
return -EBUSY;
}
if (le16_to_cpu(vsi->info.pvid) == vlanprio) {
/* duplicate request, so just return success */
dev_info(&pf->pdev->dev,
"Duplicate pvid %d request\n", vlanprio);
return ret;
}
/* If PVID, then remove all filters on the old VLAN */
if (vsi->info.pvid)
ice_vsi_kill_vlan(vsi, (le16_to_cpu(vsi->info.pvid) &
VLAN_VID_MASK));
if (vlan_id || qos) {
ret = ice_vsi_manage_pvid(vsi, vlanprio, true);
if (ret)
goto error_set_pvid;
} else {
ice_vsi_manage_pvid(vsi, 0, false);
vsi->info.pvid = 0;
}
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 = ice_vsi_add_vlan(vsi, vlan_id);
if (ret)
goto error_set_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);
error_set_pvid:
return ret;
}
/**
* ice_vc_process_vlan_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
* @add_v: Add VLAN if true, otherwise delete VLAN
*
* Process virtchnl op to add or remove programmed guest VLAN ID
*/
static int ice_vc_process_vlan_msg(struct ice_vf *vf, u8 *msg, bool add_v)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_vlan_filter_list *vfl =
(struct virtchnl_vlan_filter_list *)msg;
struct ice_pf *pf = vf->pf;
bool vlan_promisc = false;
struct ice_vsi *vsi;
struct ice_hw *hw;
int status = 0;
u8 promisc_m;
int i;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (!ice_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (add_v && !ice_is_vf_trusted(vf) &&
vf->num_vlan >= ICE_MAX_VLAN_PER_VF) {
dev_info(&pf->pdev->dev,
"VF-%d is not trusted, switch the VF to trusted mode, in order to add more VLAN addresses\n",
vf->vf_id);
/* There is no need to let VF know about being not trusted,
* so we can just return success message here
*/
goto error_param;
}
for (i = 0; i < vfl->num_elements; i++) {
if (vfl->vlan_id[i] > ICE_MAX_VLANID) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
dev_err(&pf->pdev->dev,
"invalid VF VLAN id %d\n", vfl->vlan_id[i]);
goto error_param;
}
}
hw = &pf->hw;
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (vsi->info.pvid) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (ice_vsi_manage_vlan_stripping(vsi, add_v)) {
dev_err(&pf->pdev->dev,
"%sable VLAN stripping failed for VSI %i\n",
add_v ? "en" : "dis", vsi->vsi_num);
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) ||
test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states))
vlan_promisc = true;
if (add_v) {
for (i = 0; i < vfl->num_elements; i++) {
u16 vid = vfl->vlan_id[i];
if (!ice_is_vf_trusted(vf) &&
vf->num_vlan >= ICE_MAX_VLAN_PER_VF) {
dev_info(&pf->pdev->dev,
"VF-%d is not trusted, switch the VF to trusted mode, in order to add more VLAN addresses\n",
vf->vf_id);
/* There is no need to let VF know about being
* not trusted, so we can just return success
* message here as well.
*/
goto error_param;
}
if (ice_vsi_add_vlan(vsi, vid)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vf->num_vlan++;
/* Enable VLAN pruning when VLAN is added */
if (!vlan_promisc) {
status = ice_cfg_vlan_pruning(vsi, true, false);
if (status) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
dev_err(&pf->pdev->dev,
"Enable VLAN pruning on VLAN ID: %d failed error-%d\n",
vid, status);
goto error_param;
}
} else {
/* Enable Ucast/Mcast VLAN promiscuous mode */
promisc_m = ICE_PROMISC_VLAN_TX |
ICE_PROMISC_VLAN_RX;
status = ice_set_vsi_promisc(hw, vsi->idx,
promisc_m, vid);
if (status) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
dev_err(&pf->pdev->dev,
"Enable Unicast/multicast promiscuous mode on VLAN ID:%d failed error-%d\n",
vid, status);
}
}
}
} else {
/* In case of non_trusted VF, number of VLAN elements passed
* to PF for removal might be greater than number of VLANs
* filter programmed for that VF - So, use actual number of
* VLANS added earlier with add VLAN opcode. In order to avoid
* removing VLAN that doesn't exist, which result to sending
* erroneous failed message back to the VF
*/
int num_vf_vlan;
num_vf_vlan = vf->num_vlan;
for (i = 0; i < vfl->num_elements && i < num_vf_vlan; i++) {
u16 vid = vfl->vlan_id[i];
/* Make sure ice_vsi_kill_vlan is successful before
* updating VLAN information
*/
if (ice_vsi_kill_vlan(vsi, vid)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vf->num_vlan--;
/* Disable VLAN pruning when the last VLAN is removed */
if (!vf->num_vlan)
ice_cfg_vlan_pruning(vsi, false, false);
/* Disable Unicast/Multicast VLAN promiscuous mode */
if (vlan_promisc) {
promisc_m = ICE_PROMISC_VLAN_TX |
ICE_PROMISC_VLAN_RX;
ice_clear_vsi_promisc(hw, vsi->idx,
promisc_m, vid);
}
}
}
error_param:
/* send the response to the VF */
if (add_v)
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, v_ret,
NULL, 0);
else
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, v_ret,
NULL, 0);
}
/**
* ice_vc_add_vlan_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* Add and program guest VLAN ID
*/
static int ice_vc_add_vlan_msg(struct ice_vf *vf, u8 *msg)
{
return ice_vc_process_vlan_msg(vf, msg, true);
}
/**
* ice_vc_remove_vlan_msg
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*
* remove programmed guest VLAN ID
*/
static int ice_vc_remove_vlan_msg(struct ice_vf *vf, u8 *msg)
{
return ice_vc_process_vlan_msg(vf, msg, false);
}
/**
* ice_vc_ena_vlan_stripping
* @vf: pointer to the VF info
*
* Enable VLAN header stripping for a given VF
*/
static int ice_vc_ena_vlan_stripping(struct ice_vf *vf)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (ice_vsi_manage_vlan_stripping(vsi, true))
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
error_param:
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
v_ret, NULL, 0);
}
/**
* ice_vc_dis_vlan_stripping
* @vf: pointer to the VF info
*
* Disable VLAN header stripping for a given VF
*/
static int ice_vc_dis_vlan_stripping(struct ice_vf *vf)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (ice_vsi_manage_vlan_stripping(vsi, false))
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
error_param:
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
v_ret, NULL, 0);
}
/**
* ice_vc_process_vf_msg - Process request from VF
* @pf: pointer to the PF structure
* @event: pointer to the AQ event
*
* called from the common asq/arq handler to
* process request from VF
*/
void ice_vc_process_vf_msg(struct ice_pf *pf, struct ice_rq_event_info *event)
{
u32 v_opcode = le32_to_cpu(event->desc.cookie_high);
s16 vf_id = le16_to_cpu(event->desc.retval);
u16 msglen = event->msg_len;
u8 *msg = event->msg_buf;
struct ice_vf *vf = NULL;
int err = 0;
if (vf_id >= pf->num_alloc_vfs) {
err = -EINVAL;
goto error_handler;
}
vf = &pf->vf[vf_id];
/* Check if VF is disabled. */
if (test_bit(ICE_VF_STATE_DIS, vf->vf_states)) {
err = -EPERM;
goto error_handler;
}
/* Perform basic checks on the msg */
err = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
if (err) {
if (err == VIRTCHNL_STATUS_ERR_PARAM)
err = -EPERM;
else
err = -EINVAL;
}
error_handler:
if (err) {
ice_vc_send_msg_to_vf(vf, v_opcode, VIRTCHNL_STATUS_ERR_PARAM,
NULL, 0);
dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d, error %d\n",
vf_id, v_opcode, msglen, err);
return;
}
switch (v_opcode) {
case VIRTCHNL_OP_VERSION:
err = ice_vc_get_ver_msg(vf, msg);
break;
case VIRTCHNL_OP_GET_VF_RESOURCES:
err = ice_vc_get_vf_res_msg(vf, msg);
ice_vc_notify_vf_link_state(vf);
break;
case VIRTCHNL_OP_RESET_VF:
ice_vc_reset_vf_msg(vf);
break;
case VIRTCHNL_OP_ADD_ETH_ADDR:
err = ice_vc_add_mac_addr_msg(vf, msg);
break;
case VIRTCHNL_OP_DEL_ETH_ADDR:
err = ice_vc_del_mac_addr_msg(vf, msg);
break;
case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
err = ice_vc_cfg_qs_msg(vf, msg);
break;
case VIRTCHNL_OP_ENABLE_QUEUES:
err = ice_vc_ena_qs_msg(vf, msg);
ice_vc_notify_vf_link_state(vf);
break;
case VIRTCHNL_OP_DISABLE_QUEUES:
err = ice_vc_dis_qs_msg(vf, msg);
break;
case VIRTCHNL_OP_REQUEST_QUEUES:
err = ice_vc_request_qs_msg(vf, msg);
break;
case VIRTCHNL_OP_CONFIG_IRQ_MAP:
err = ice_vc_cfg_irq_map_msg(vf, msg);
break;
case VIRTCHNL_OP_CONFIG_RSS_KEY:
err = ice_vc_config_rss_key(vf, msg);
break;
case VIRTCHNL_OP_CONFIG_RSS_LUT:
err = ice_vc_config_rss_lut(vf, msg);
break;
case VIRTCHNL_OP_GET_STATS:
err = ice_vc_get_stats_msg(vf, msg);
break;
case VIRTCHNL_OP_ADD_VLAN:
err = ice_vc_add_vlan_msg(vf, msg);
break;
case VIRTCHNL_OP_DEL_VLAN:
err = ice_vc_remove_vlan_msg(vf, msg);
break;
case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
err = ice_vc_ena_vlan_stripping(vf);
break;
case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
err = ice_vc_dis_vlan_stripping(vf);
break;
case VIRTCHNL_OP_UNKNOWN:
default:
dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
v_opcode, vf_id);
err = ice_vc_send_msg_to_vf(vf, v_opcode,
VIRTCHNL_STATUS_ERR_NOT_SUPPORTED,
NULL, 0);
break;
}
if (err) {
/* Helper function cares less about error return values here
* as it is busy with pending work.
*/
dev_info(&pf->pdev->dev,
"PF failed to honor VF %d, opcode %d, error %d\n",
vf_id, v_opcode, err);
}
}
/**
* ice_get_vf_cfg
* @netdev: network interface device structure
* @vf_id: VF identifier
* @ivi: VF configuration structure
*
* return VF configuration
*/
int
ice_get_vf_cfg(struct net_device *netdev, int vf_id, struct ifla_vf_info *ivi)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
struct ice_vf *vf;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
netdev_err(netdev, "invalid VF id: %d\n", vf_id);
return -EINVAL;
}
vf = &pf->vf[vf_id];
vsi = pf->vsi[vf->lan_vsi_idx];
if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
netdev_err(netdev, "VF %d in reset. Try again.\n", vf_id);
return -EBUSY;
}
ivi->vf = vf_id;
ether_addr_copy(ivi->mac, vf->dflt_lan_addr.addr);
/* VF configuration for VLAN and applicable QoS */
ivi->vlan = le16_to_cpu(vsi->info.pvid) & ICE_VLAN_M;
ivi->qos = (le16_to_cpu(vsi->info.pvid) & ICE_PRIORITY_M) >>
ICE_VLAN_PRIORITY_S;
ivi->trusted = vf->trusted;
ivi->spoofchk = vf->spoofchk;
if (!vf->link_forced)
ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
else if (vf->link_up)
ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
else
ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
ivi->max_tx_rate = vf->tx_rate;
ivi->min_tx_rate = 0;
return 0;
}
/**
* ice_set_vf_spoofchk
* @netdev: network interface device structure
* @vf_id: VF identifier
* @ena: flag to enable or disable feature
*
* Enable or disable VF spoof checking
*/
int ice_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool ena)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
struct ice_vsi_ctx *ctx;
enum ice_status status;
struct ice_vf *vf;
int ret = 0;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
netdev_err(netdev, "invalid VF id: %d\n", vf_id);
return -EINVAL;
}
vf = &pf->vf[vf_id];
if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
netdev_err(netdev, "VF %d in reset. Try again.\n", vf_id);
return -EBUSY;
}
if (ena == vf->spoofchk) {
dev_dbg(&pf->pdev->dev, "VF spoofchk already %s\n",
ena ? "ON" : "OFF");
return 0;
}
ctx = devm_kzalloc(&pf->pdev->dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);
if (ena) {
ctx->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF;
ctx->info.sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_PRUNE_EN_M;
}
status = ice_update_vsi(&pf->hw, vsi->idx, ctx, NULL);
if (status) {
dev_dbg(&pf->pdev->dev,
"Error %d, failed to update VSI* parameters\n", status);
ret = -EIO;
goto out;
}
vf->spoofchk = ena;
vsi->info.sec_flags = ctx->info.sec_flags;
vsi->info.sw_flags2 = ctx->info.sw_flags2;
out:
devm_kfree(&pf->pdev->dev, ctx);
return ret;
}
/**
* ice_set_vf_mac
* @netdev: network interface device structure
* @vf_id: VF identifier
* @mac: MAC address
*
* program VF MAC address
*/
int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
struct ice_vf *vf;
int ret = 0;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
netdev_err(netdev, "invalid VF id: %d\n", vf_id);
return -EINVAL;
}
vf = &pf->vf[vf_id];
if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
netdev_err(netdev, "VF %d in reset. Try again.\n", vf_id);
return -EBUSY;
}
if (is_zero_ether_addr(mac) || is_multicast_ether_addr(mac)) {
netdev_err(netdev, "%pM not a valid unicast address\n", mac);
return -EINVAL;
}
/* copy MAC into dflt_lan_addr and trigger a VF reset. The reset
* flow will use the updated dflt_lan_addr and add a MAC filter
* using ice_add_mac. Also set pf_set_mac to indicate that the PF has
* set the MAC address for this VF.
*/
ether_addr_copy(vf->dflt_lan_addr.addr, mac);
vf->pf_set_mac = true;
netdev_info(netdev,
"MAC on VF %d set to %pM. VF driver will be reinitialized\n",
vf_id, mac);
ice_vc_dis_vf(vf);
return ret;
}
/**
* ice_set_vf_trust
* @netdev: network interface device structure
* @vf_id: VF identifier
* @trusted: Boolean value to enable/disable trusted VF
*
* Enable or disable a given VF as trusted
*/
int ice_set_vf_trust(struct net_device *netdev, int vf_id, bool trusted)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
struct ice_vf *vf;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev, "invalid VF id: %d\n", vf_id);
return -EINVAL;
}
vf = &pf->vf[vf_id];
if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
return -EBUSY;
}
/* Check if already trusted */
if (trusted == vf->trusted)
return 0;
vf->trusted = trusted;
ice_vc_dis_vf(vf);
dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
vf_id, trusted ? "" : "un");
return 0;
}
/**
* ice_set_vf_link_state
* @netdev: network interface device structure
* @vf_id: VF identifier
* @link_state: required link state
*
* Set VF's link state, irrespective of physical link state status
*/
int ice_set_vf_link_state(struct net_device *netdev, int vf_id, int link_state)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_pf *pf = np->vsi->back;
struct virtchnl_pf_event pfe = { 0 };
struct ice_link_status *ls;
struct ice_vf *vf;
struct ice_hw *hw;
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
return -EINVAL;
}
vf = &pf->vf[vf_id];
hw = &pf->hw;
ls = &pf->hw.port_info->phy.link_info;
if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
dev_err(&pf->pdev->dev, "vf %d in reset. Try again.\n", vf_id);
return -EBUSY;
}
pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
pfe.severity = PF_EVENT_SEVERITY_INFO;
switch (link_state) {
case IFLA_VF_LINK_STATE_AUTO:
vf->link_forced = false;
vf->link_up = ls->link_info & ICE_AQ_LINK_UP;
break;
case IFLA_VF_LINK_STATE_ENABLE:
vf->link_forced = true;
vf->link_up = true;
break;
case IFLA_VF_LINK_STATE_DISABLE:
vf->link_forced = true;
vf->link_up = false;
break;
default:
return -EINVAL;
}
if (vf->link_forced)
ice_set_pfe_link_forced(vf, &pfe, vf->link_up);
else
ice_set_pfe_link(vf, &pfe, ls->link_speed, vf->link_up);
/* Notify the VF of its new link state */
ice_aq_send_msg_to_vf(hw, vf->vf_id, VIRTCHNL_OP_EVENT,
VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe,
sizeof(pfe), NULL);
return 0;
}
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