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android-kvm / linux / 11eb85ec42dc8c7a7ec519b90ccf2eeae9409de8 / . / drivers / net / ethernet / intel / ice / ice_virtchnl_pf.c
blob: edb374296d1f372ab8e638a93d1b146f98feb6d4 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2018, Intel Corporation. */
#include "ice.h"
#include "ice_base.h"
#include "ice_lib.h"
/**
* ice_validate_vf_id - helper to check if VF ID is valid
* @pf: pointer to the PF structure
* @vf_id: the ID of the VF to check
*/
static int ice_validate_vf_id(struct ice_pf *pf, int vf_id)
{
if (vf_id >= pf->num_alloc_vfs) {
dev_err(ice_pf_to_dev(pf), "Invalid VF ID: %d\n", vf_id);
return -EINVAL;
}
return 0;
}
/**
* ice_check_vf_init - helper to check if VF init complete
* @pf: pointer to the PF structure
* @vf: the pointer to the VF to check
*/
static int ice_check_vf_init(struct ice_pf *pf, struct ice_vf *vf)
{
if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
dev_err(ice_pf_to_dev(pf), "VF ID: %d in reset. Try again.\n",
vf->vf_id);
return -EBUSY;
}
return 0;
}
/**
* 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;
struct device *dev;
int first, last, v;
struct ice_hw *hw;
hw = &pf->hw;
vsi = pf->vsi[vf->lan_vsi_idx];
dev = ice_pf_to_dev(pf);
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(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(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 device *dev = ice_pf_to_dev(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(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 and set VF disable state */
ice_dis_vf_mappings(&pf->vf[i]);
set_bit(ICE_VF_STATE_DIS, pf->vf[i].vf_states);
ice_free_vf_res(&pf->vf[i]);
}
}
if (ice_sriov_free_msix_res(pf))
dev_err(dev, "Failed to free MSIX resources used by SR-IOV\n");
devm_kfree(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 device *dev;
struct ice_hw *hw;
int vf_abs_id, i;
dev = ice_pf_to_dev(pf);
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->vf_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(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 ice_hw *hw = &vsi->back->hw;
struct ice_vsi_ctx *ctxt;
enum ice_status status;
int ret = 0;
ctxt = kzalloc(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(&vsi->back->pdev->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:
kfree(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;
struct device *dev;
int status = 0;
dev = ice_pf_to_dev(pf);
/* 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(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(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(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;
struct device *dev;
int first, last, v;
struct ice_hw *hw;
u32 reg;
dev = ice_pf_to_dev(pf);
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(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(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;
struct device *dev = ice_pf_to_dev(pf);
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(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 device *dev = ice_pf_to_dev(pf);
struct ice_hw *hw = &pf->hw;
int v;
if (ice_check_avail_res(pf)) {
dev_err(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(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 device *dev = ice_pf_to_dev(pf);
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(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(dev, "Failed to free MSIX resources used by SR-IOV\n");
if (!ice_config_res_vfs(pf))
return false;
return true;
}
/**
* ice_is_vf_disabled
* @vf: pointer to the VF info
*
* Returns true if the PF or VF is disabled, false otherwise.
*/
static bool ice_is_vf_disabled(struct ice_vf *vf)
{
struct ice_pf *pf = vf->pf;
/* If the PF has been disabled, there is no need resetting VF until
* PF is active again. Similarly, 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.
*/
return (test_bit(__ICE_VF_DIS, pf->state) ||
test_bit(ICE_VF_STATE_DIS, vf->vf_states));
}
/**
* 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 device *dev;
struct ice_hw *hw;
bool rsd = false;
u8 promisc_m;
u32 reg;
int i;
dev = ice_pf_to_dev(pf);
if (ice_is_vf_disabled(vf)) {
dev_dbg(dev, "VF is already disabled, there is no need for resetting it, telling VM, all is fine %d\n",
vf->vf_id);
return true;
}
/* Set VF disable bit state here, before triggering reset */
set_bit(ICE_VF_STATE_DIS, vf->vf_states);
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(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(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;
struct ice_pf *pf;
if (!vf)
return;
pf = vf->pf;
if (ice_validate_vf_id(pf, vf->vf_id))
return;
/* Bail out if VF is in disabled state, neither initialized, nor active
* state - otherwise proceed with notifications
*/
if ((!test_bit(ICE_VF_STATE_INIT, vf->vf_states) &&
!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) ||
test_bit(ICE_VF_STATE_DIS, vf->vf_states))
return;
pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
ice_aq_send_msg_to_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 device *dev = ice_pf_to_dev(pf);
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(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(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 = ice_pf_to_dev(pf);
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 -EOPNOTSUPP;
}
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);
struct device *dev = ice_pf_to_dev(pf);
if (ice_is_safe_mode(pf)) {
dev_err(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(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_reset_vf - Perform software reset on the VF after informing the AVF
* @vf: pointer to the VF info
*/
static void ice_vc_reset_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 device *dev;
struct ice_pf *pf;
if (!vf)
return -EINVAL;
pf = vf->pf;
if (ice_validate_vf_id(pf, vf->vf_id))
return -EINVAL;
dev = ice_pf_to_dev(pf);
/* single place to detect unsuccessful return values */
if (v_retval) {
vf->num_inval_msgs++;
dev_info(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(dev,
"Number of invalid messages exceeded for VF %d\n",
vf->vf_id);
dev_err(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(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 (ice_check_vf_init(pf, vf)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
len = sizeof(struct virtchnl_vf_resource);
vfres = kzalloc(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);
/* match guest capabilities */
vf->driver_caps = vfres->vf_cap_flags;
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);
kfree(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;
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;
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_eth_stats stats = { 0 };
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;
}
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;
}
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;
/* vector_id is always 0-based for each VF, and can never be
* larger than or equal to the max allowed interrupts per VF
*/
if (!(vector_id < ICE_MAX_INTR_PER_VF) ||
!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(ice_pf_to_dev(pf),
"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;
struct device *dev;
int mac_count = 0;
int i;
dev = ice_pf_to_dev(pf);
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(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(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(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(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(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(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(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;
struct device *dev;
dev = ice_pf_to_dev(pf);
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(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(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(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_reset_vf(vf);
dev_info(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_pf *pf = ice_netdev_to_pf(netdev);
struct ice_vsi *vsi;
struct device *dev;
struct ice_vf *vf;
int ret = 0;
dev = ice_pf_to_dev(pf);
if (ice_validate_vf_id(pf, vf_id))
return -EINVAL;
if (vlan_id > ICE_MAX_VLANID || qos > 7) {
dev_err(dev, "Invalid VF Parameters\n");
return -EINVAL;
}
if (vlan_proto != htons(ETH_P_8021Q)) {
dev_err(dev, "VF VLAN protocol is not supported\n");
return -EPROTONOSUPPORT;
}
vf = &pf->vf[vf_id];
vsi = pf->vsi[vf->lan_vsi_idx];
if (ice_check_vf_init(pf, vf))
return -EBUSY;
if (le16_to_cpu(vsi->info.pvid) == vlanprio) {
/* duplicate request, so just return success */
dev_dbg(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(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_vf_vlan_offload_ena - determine if capabilities support VLAN offloads
* @caps: VF driver negotiated capabilities
*
* Return true if VIRTCHNL_VF_OFFLOAD_VLAN capability is set, else return false
*/
static bool ice_vf_vlan_offload_ena(u32 caps)
{
return !!(caps & VIRTCHNL_VF_OFFLOAD_VLAN);
}
/**
* 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 device *dev;
struct ice_hw *hw;
int status = 0;
u8 promisc_m;
int i;
dev = ice_pf_to_dev(pf);
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (!ice_vf_vlan_offload_ena(vf->driver_caps)) {
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(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(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 (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(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(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(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;
}
if (!ice_vf_vlan_offload_ena(vf->driver_caps)) {
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;
}
if (!ice_vf_vlan_offload_ena(vf->driver_caps)) {
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_vf_init_vlan_stripping - enable/disable VLAN stripping on initialization
* @vf: VF to enable/disable VLAN stripping for on initialization
*
* If the VIRTCHNL_VF_OFFLOAD_VLAN flag is set enable VLAN stripping, else if
* the flag is cleared then we want to disable stripping. For example, the flag
* will be cleared when port VLANs are configured by the administrator before
* passing the VF to the guest or if the AVF driver doesn't support VLAN
* offloads.
*/
static int ice_vf_init_vlan_stripping(struct ice_vf *vf)
{
struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];
if (!vsi)
return -EINVAL;
/* don't modify stripping if port VLAN is configured */
if (vsi->info.pvid)
return 0;
if (ice_vf_vlan_offload_ena(vf->driver_caps))
return ice_vsi_manage_vlan_stripping(vsi, true);
else
return ice_vsi_manage_vlan_stripping(vsi, false);
}
/**
* 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;
struct device *dev;
int err = 0;
dev = ice_pf_to_dev(pf);
if (ice_validate_vf_id(pf, vf_id)) {
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(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);
if (ice_vf_init_vlan_stripping(vf))
dev_err(dev,
"Failed to initialize VLAN stripping for VF %d\n",
vf->vf_id);
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(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(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_pf *pf = ice_netdev_to_pf(netdev);
struct ice_vsi *vsi;
struct ice_vf *vf;
if (ice_validate_vf_id(pf, vf_id))
return -EINVAL;
vf = &pf->vf[vf_id];
vsi = pf->vsi[vf->lan_vsi_idx];
if (ice_check_vf_init(pf, vf))
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_pf *pf = ice_netdev_to_pf(netdev);
struct ice_vsi *vsi = pf->vsi[0];
struct ice_vsi_ctx *ctx;
enum ice_status status;
struct device *dev;
struct ice_vf *vf;
int ret = 0;
dev = ice_pf_to_dev(pf);
if (ice_validate_vf_id(pf, vf_id))
return -EINVAL;
vf = &pf->vf[vf_id];
if (ice_check_vf_init(pf, vf))
return -EBUSY;
if (ena == vf->spoofchk) {
dev_dbg(dev, "VF spoofchk already %s\n",
ena ? "ON" : "OFF");
return 0;
}
ctx = kzalloc(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(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:
kfree(ctx);
return ret;
}
/**
* ice_wait_on_vf_reset
* @vf: The VF being resseting
*
* Poll to make sure a given VF is ready after reset
*/
static void ice_wait_on_vf_reset(struct ice_vf *vf)
{
int i;
for (i = 0; i < ICE_MAX_VF_RESET_WAIT; i++) {
if (test_bit(ICE_VF_STATE_INIT, vf->vf_states))
break;
msleep(20);
}
}
/**
* 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_pf *pf = ice_netdev_to_pf(netdev);
struct ice_vf *vf;
int ret = 0;
if (ice_validate_vf_id(pf, vf_id))
return -EINVAL;
vf = &pf->vf[vf_id];
/* Don't set MAC on disabled VF */
if (ice_is_vf_disabled(vf))
return -EINVAL;
/* In case VF is in reset mode, wait until it is completed. Depending
* on factors like queue disabling routine, this could take ~250ms
*/
ice_wait_on_vf_reset(vf);
if (ice_check_vf_init(pf, vf))
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_reset_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_pf *pf = ice_netdev_to_pf(netdev);
struct device *dev;
struct ice_vf *vf;
dev = ice_pf_to_dev(pf);
if (ice_validate_vf_id(pf, vf_id))
return -EINVAL;
vf = &pf->vf[vf_id];
/* Don't set Trusted Mode on disabled VF */
if (ice_is_vf_disabled(vf))
return -EINVAL;
/* In case VF is in reset mode, wait until it is completed. Depending
* on factors like queue disabling routine, this could take ~250ms
*/
ice_wait_on_vf_reset(vf);
if (ice_check_vf_init(pf, vf))
return -EBUSY;
/* Check if already trusted */
if (trusted == vf->trusted)
return 0;
vf->trusted = trusted;
ice_vc_reset_vf(vf);
dev_info(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_pf *pf = ice_netdev_to_pf(netdev);
struct virtchnl_pf_event pfe = { 0 };
struct ice_link_status *ls;
struct ice_vf *vf;
struct ice_hw *hw;
if (ice_validate_vf_id(pf, vf_id))
return -EINVAL;
vf = &pf->vf[vf_id];
hw = &pf->hw;
ls = &pf->hw.port_info->phy.link_info;
if (ice_check_vf_init(pf, vf))
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;
}
/**
* ice_get_vf_stats - populate some stats for the VF
* @netdev: the netdev of the PF
* @vf_id: the host OS identifier (0-255)
* @vf_stats: pointer to the OS memory to be initialized
*/
int ice_get_vf_stats(struct net_device *netdev, int vf_id,
struct ifla_vf_stats *vf_stats)
{
struct ice_pf *pf = ice_netdev_to_pf(netdev);
struct ice_eth_stats *stats;
struct ice_vsi *vsi;
struct ice_vf *vf;
if (ice_validate_vf_id(pf, vf_id))
return -EINVAL;
vf = &pf->vf[vf_id];
if (ice_check_vf_init(pf, vf))
return -EBUSY;
vsi = pf->vsi[vf->lan_vsi_idx];
if (!vsi)
return -EINVAL;
ice_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;
}