superrob1500
/
mirror-linux
mirror of https://github.com/torvalds/linux
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
mirror-linux/drivers/net/ethernet/intel/ice/virt/queues.c

974 lines
27 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2022, Intel Corporation. */
#include "virtchnl.h"
#include "queues.h"
#include "ice_vf_lib_private.h"
#include "ice.h"
#include "ice_base.h"
#include "ice_lib.h"
/**
* ice_vc_get_max_frame_size - get max frame size allowed for VF
* @vf: VF used to determine max frame size
*
* Max frame size is determined based on the current port's max frame size and
* whether a port VLAN is configured on this VF. The VF is not aware whether
* it's in a port VLAN so the PF needs to account for this in max frame size
* checks and sending the max frame size to the VF.
*/
u16 ice_vc_get_max_frame_size(struct ice_vf *vf)
{
struct ice_port_info *pi = ice_vf_get_port_info(vf);
u16 max_frame_size;
max_frame_size = pi->phy.link_info.max_frame_size;
if (ice_vf_is_port_vlan_ena(vf))
max_frame_size -= VLAN_HLEN;
return max_frame_size;
}
/**
* ice_vc_isvalid_q_id
* @vsi: VSI to check queue ID against
* @qid: VSI relative queue ID
*
* check for the valid queue ID
*/
static bool ice_vc_isvalid_q_id(struct ice_vsi *vsi, u16 qid)
{
/* allocated Tx and Rx queues should be always equal for VF VSI */
return 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_E810 &&
!(ring_len % ICE_REQ_DESC_MULTIPLE));
}
/**
* ice_vf_cfg_qs_bw - Configure per queue bandwidth
* @vf: pointer to the VF info
* @num_queues: number of queues to be configured
*
* Configure per queue bandwidth.
*
* Return: 0 on success or negative error value.
*/
static int ice_vf_cfg_qs_bw(struct ice_vf *vf, u16 num_queues)
{
struct ice_hw *hw = &vf->pf->hw;
struct ice_vsi *vsi;
int ret;
u16 i;
vsi = ice_get_vf_vsi(vf);
if (!vsi)
return -EINVAL;
for (i = 0; i < num_queues; i++) {
u32 p_rate, min_rate;
u8 tc;
p_rate = vf->qs_bw[i].peak;
min_rate = vf->qs_bw[i].committed;
tc = vf->qs_bw[i].tc;
if (p_rate)
ret = ice_cfg_q_bw_lmt(hw->port_info, vsi->idx, tc,
vf->qs_bw[i].queue_id,
ICE_MAX_BW, p_rate);
else
ret = ice_cfg_q_bw_dflt_lmt(hw->port_info, vsi->idx, tc,
vf->qs_bw[i].queue_id,
ICE_MAX_BW);
if (ret)
return ret;
if (min_rate)
ret = ice_cfg_q_bw_lmt(hw->port_info, vsi->idx, tc,
vf->qs_bw[i].queue_id,
ICE_MIN_BW, min_rate);
else
ret = ice_cfg_q_bw_dflt_lmt(hw->port_info, vsi->idx, tc,
vf->qs_bw[i].queue_id,
ICE_MIN_BW);
if (ret)
return ret;
}
return 0;
}
/**
* ice_vf_cfg_q_quanta_profile - Configure quanta profile
* @vf: pointer to the VF info
* @quanta_prof_idx: pointer to the quanta profile index
* @quanta_size: quanta size to be set
*
* This function chooses available quanta profile and configures the register.
* The quanta profile is evenly divided by the number of device ports, and then
* available to the specific PF and VFs. The first profile for each PF is a
* reserved default profile. Only quanta size of the rest unused profile can be
* modified.
*
* Return: 0 on success or negative error value.
*/
static int ice_vf_cfg_q_quanta_profile(struct ice_vf *vf, u16 quanta_size,
u16 *quanta_prof_idx)
{
const u16 n_desc = calc_quanta_desc(quanta_size);
struct ice_hw *hw = &vf->pf->hw;
const u16 n_cmd = 2 * n_desc;
struct ice_pf *pf = vf->pf;
u16 per_pf, begin_id;
u8 n_used;
u32 reg;
begin_id = (GLCOMM_QUANTA_PROF_MAX_INDEX + 1) / hw->dev_caps.num_funcs *
hw->logical_pf_id;
if (quanta_size == ICE_DFLT_QUANTA) {
*quanta_prof_idx = begin_id;
} else {
per_pf = (GLCOMM_QUANTA_PROF_MAX_INDEX + 1) /
hw->dev_caps.num_funcs;
n_used = pf->num_quanta_prof_used;
if (n_used < per_pf) {
*quanta_prof_idx = begin_id + 1 + n_used;
pf->num_quanta_prof_used++;
} else {
return -EINVAL;
}
}
reg = FIELD_PREP(GLCOMM_QUANTA_PROF_QUANTA_SIZE_M, quanta_size) |
FIELD_PREP(GLCOMM_QUANTA_PROF_MAX_CMD_M, n_cmd) |
FIELD_PREP(GLCOMM_QUANTA_PROF_MAX_DESC_M, n_desc);
wr32(hw, GLCOMM_QUANTA_PROF(*quanta_prof_idx), reg);
return 0;
}
/**
* ice_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTCHNL
* @vqs: virtchnl_queue_select structure containing bitmaps to validate
*
* Return true on successful validation, else false
*/
static bool ice_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
{
if ((!vqs->rx_queues && !vqs->tx_queues) ||
vqs->rx_queues >= BIT(ICE_MAX_RSS_QS_PER_VF) ||
vqs->tx_queues >= BIT(ICE_MAX_RSS_QS_PER_VF))
return false;
return true;
}
/**
* ice_vf_ena_txq_interrupt - enable Tx queue interrupt via QINT_TQCTL
* @vsi: VSI of the VF to configure
* @q_idx: VF queue index used to determine the queue in the PF's space
*/
void ice_vf_ena_txq_interrupt(struct ice_vsi *vsi, u32 q_idx)
{
struct ice_hw *hw = &vsi->back->hw;
u32 pfq = vsi->txq_map[q_idx];
u32 reg;
reg = rd32(hw, QINT_TQCTL(pfq));
/* MSI-X index 0 in the VF's space is always for the OICR, which means
* this is most likely a poll mode VF driver, so don't enable an
* interrupt that was never configured via VIRTCHNL_OP_CONFIG_IRQ_MAP
*/
if (!(reg & QINT_TQCTL_MSIX_INDX_M))
return;
wr32(hw, QINT_TQCTL(pfq), reg | QINT_TQCTL_CAUSE_ENA_M);
}
/**
* ice_vf_ena_rxq_interrupt - enable Tx queue interrupt via QINT_RQCTL
* @vsi: VSI of the VF to configure
* @q_idx: VF queue index used to determine the queue in the PF's space
*/
void ice_vf_ena_rxq_interrupt(struct ice_vsi *vsi, u32 q_idx)
{
struct ice_hw *hw = &vsi->back->hw;
u32 pfq = vsi->rxq_map[q_idx];
u32 reg;
reg = rd32(hw, QINT_RQCTL(pfq));
/* MSI-X index 0 in the VF's space is always for the OICR, which means
* this is most likely a poll mode VF driver, so don't enable an
* interrupt that was never configured via VIRTCHNL_OP_CONFIG_IRQ_MAP
*/
if (!(reg & QINT_RQCTL_MSIX_INDX_M))
return;
wr32(hw, QINT_RQCTL(pfq), reg | QINT_RQCTL_CAUSE_ENA_M);
}
/**
* 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)
*/
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_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 (!ice_vc_validate_vqs_bitmaps(vqs)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi = ice_get_vf_vsi(vf);
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_RSS_QS_PER_VF) {
if (!ice_vc_isvalid_q_id(vsi, 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_one_rx_ring(vsi, true, vf_q_id, true)) {
dev_err(ice_pf_to_dev(vsi->back), "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;
}
ice_vf_ena_rxq_interrupt(vsi, vf_q_id);
set_bit(vf_q_id, vf->rxq_ena);
}
q_map = vqs->tx_queues;
for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) {
if (!ice_vc_isvalid_q_id(vsi, 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;
ice_vf_ena_txq_interrupt(vsi, vf_q_id);
set_bit(vf_q_id, vf->txq_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_vf_vsi_dis_single_txq - disable a single Tx queue
* @vf: VF to disable queue for
* @vsi: VSI for the VF
* @q_id: VF relative (0-based) queue ID
*
* Attempt to disable the Tx queue passed in. If the Tx queue was successfully
* disabled then clear q_id bit in the enabled queues bitmap and return
* success. Otherwise return error.
*/
int ice_vf_vsi_dis_single_txq(struct ice_vf *vf, struct ice_vsi *vsi, u16 q_id)
{
struct ice_txq_meta txq_meta = { 0 };
struct ice_tx_ring *ring;
int err;
if (!test_bit(q_id, vf->txq_ena))
dev_dbg(ice_pf_to_dev(vsi->back), "Queue %u on VSI %u is not enabled, but stopping it anyway\n",
q_id, vsi->vsi_num);
ring = vsi->tx_rings[q_id];
if (!ring)
return -EINVAL;
ice_fill_txq_meta(vsi, ring, &txq_meta);
err = ice_vsi_stop_tx_ring(vsi, ICE_NO_RESET, vf->vf_id, ring, &txq_meta);
if (err) {
dev_err(ice_pf_to_dev(vsi->back), "Failed to stop Tx ring %d on VSI %d\n",
q_id, vsi->vsi_num);
return err;
}
/* Clear enabled queues flag */
clear_bit(q_id, vf->txq_ena);
return 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)
*/
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_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 (!ice_vc_validate_vqs_bitmaps(vqs)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi = ice_get_vf_vsi(vf);
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_RSS_QS_PER_VF) {
if (!ice_vc_isvalid_q_id(vsi, vf_q_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
if (ice_vf_vsi_dis_single_txq(vf, vsi, vf_q_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
}
}
q_map = vqs->rx_queues;
/* speed up Rx queue disable by batching them if possible */
if (q_map &&
bitmap_equal(&q_map, vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF)) {
if (ice_vsi_stop_all_rx_rings(vsi)) {
dev_err(ice_pf_to_dev(vsi->back), "Failed to stop all Rx rings on VSI %d\n",
vsi->vsi_num);
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
bitmap_zero(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF);
} else if (q_map) {
for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) {
if (!ice_vc_isvalid_q_id(vsi, 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_one_rx_ring(vsi, false, vf_q_id,
true)) {
dev_err(ice_pf_to_dev(vsi->back), "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);
}
}
/* Clear enabled queues flag */
if (v_ret == VIRTCHNL_STATUS_SUCCESS && ice_vf_has_no_qs_ena(vf))
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_cfg_interrupt
* @vf: pointer to the VF info
* @vsi: the VSI being configured
* @map: vector map for mapping vectors to queues
* @q_vector: structure for interrupt vector
* configure the IRQ to queue map
*/
static enum virtchnl_status_code
ice_cfg_interrupt(struct ice_vf *vf, struct ice_vsi *vsi,
struct virtchnl_vector_map *map,
struct ice_q_vector *q_vector)
{
u16 vsi_q_id, vsi_q_id_idx;
unsigned long qmap;
q_vector->num_ring_rx = 0;
q_vector->num_ring_tx = 0;
qmap = map->rxq_map;
for_each_set_bit(vsi_q_id_idx, &qmap, ICE_MAX_RSS_QS_PER_VF) {
vsi_q_id = vsi_q_id_idx;
if (!ice_vc_isvalid_q_id(vsi, vsi_q_id))
return VIRTCHNL_STATUS_ERR_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,
q_vector->vf_reg_idx,
q_vector->rx.itr_idx);
}
qmap = map->txq_map;
for_each_set_bit(vsi_q_id_idx, &qmap, ICE_MAX_RSS_QS_PER_VF) {
vsi_q_id = vsi_q_id_idx;
if (!ice_vc_isvalid_q_id(vsi, vsi_q_id))
return VIRTCHNL_STATUS_ERR_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,
q_vector->vf_reg_idx,
q_vector->tx.itr_idx);
}
return VIRTCHNL_STATUS_SUCCESS;
}
/**
* 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
*/
int ice_vc_cfg_irq_map_msg(struct ice_vf *vf, u8 *msg)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
u16 num_q_vectors_mapped, vsi_id, vector_id;
struct virtchnl_irq_map_info *irqmap_info;
struct virtchnl_vector_map *map;
struct ice_vsi *vsi;
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) ||
vf->num_msix < num_q_vectors_mapped ||
!num_q_vectors_mapped) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto error_param;
}
vsi = ice_get_vf_vsi(vf);
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 < vf->num_msix) ||
!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 */
v_ret = ice_cfg_interrupt(vf, vsi, map, q_vector);
if (v_ret)
goto error_param;
}
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_q_bw - Configure per queue bandwidth
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer which holds the command descriptor
*
* Configure VF queues bandwidth.
*
* Return: 0 on success or negative error value.
*/
int ice_vc_cfg_q_bw(struct ice_vf *vf, u8 *msg)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_queues_bw_cfg *qbw =
(struct virtchnl_queues_bw_cfg *)msg;
struct ice_vsi *vsi;
u16 i;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) ||
!ice_vc_isvalid_vsi_id(vf, qbw->vsi_id)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
vsi = ice_get_vf_vsi(vf);
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
if (qbw->num_queues > ICE_MAX_RSS_QS_PER_VF ||
qbw->num_queues > min_t(u16, vsi->alloc_txq, vsi->alloc_rxq)) {
dev_err(ice_pf_to_dev(vf->pf), "VF-%d trying to configure more than allocated number of queues: %d\n",
vf->vf_id, min_t(u16, vsi->alloc_txq, vsi->alloc_rxq));
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
for (i = 0; i < qbw->num_queues; i++) {
if (qbw->cfg[i].shaper.peak != 0 && vf->max_tx_rate != 0 &&
qbw->cfg[i].shaper.peak > vf->max_tx_rate) {
dev_warn(ice_pf_to_dev(vf->pf), "The maximum queue %d rate limit configuration may not take effect because the maximum TX rate for VF-%d is %d\n",
qbw->cfg[i].queue_id, vf->vf_id,
vf->max_tx_rate);
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
if (qbw->cfg[i].shaper.committed != 0 && vf->min_tx_rate != 0 &&
qbw->cfg[i].shaper.committed < vf->min_tx_rate) {
dev_warn(ice_pf_to_dev(vf->pf), "The minimum queue %d rate limit configuration may not take effect because the minimum TX rate for VF-%d is %d\n",
qbw->cfg[i].queue_id, vf->vf_id,
vf->min_tx_rate);
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
if (qbw->cfg[i].queue_id > vf->num_vf_qs) {
dev_warn(ice_pf_to_dev(vf->pf), "VF-%d trying to configure invalid queue_id\n",
vf->vf_id);
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
if (qbw->cfg[i].tc >= ICE_MAX_TRAFFIC_CLASS) {
dev_warn(ice_pf_to_dev(vf->pf), "VF-%d trying to configure a traffic class higher than allowed\n",
vf->vf_id);
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
}
for (i = 0; i < qbw->num_queues; i++) {
vf->qs_bw[i].queue_id = qbw->cfg[i].queue_id;
vf->qs_bw[i].peak = qbw->cfg[i].shaper.peak;
vf->qs_bw[i].committed = qbw->cfg[i].shaper.committed;
vf->qs_bw[i].tc = qbw->cfg[i].tc;
}
if (ice_vf_cfg_qs_bw(vf, qbw->num_queues))
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
err:
/* send the response to the VF */
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_QUEUE_BW,
v_ret, NULL, 0);
}
/**
* ice_vc_cfg_q_quanta - Configure per queue quanta
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer which holds the command descriptor
*
* Configure VF queues quanta.
*
* Return: 0 on success or negative error value.
*/
int ice_vc_cfg_q_quanta(struct ice_vf *vf, u8 *msg)
{
u16 quanta_prof_id, quanta_size, start_qid, num_queues, end_qid, i;
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_quanta_cfg *qquanta =
(struct virtchnl_quanta_cfg *)msg;
struct ice_vsi *vsi;
int ret;
start_qid = qquanta->queue_select.start_queue_id;
num_queues = qquanta->queue_select.num_queues;
if (check_add_overflow(start_qid, num_queues, &end_qid)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
vsi = ice_get_vf_vsi(vf);
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
if (end_qid > ICE_MAX_RSS_QS_PER_VF ||
end_qid > min_t(u16, vsi->alloc_txq, vsi->alloc_rxq)) {
dev_err(ice_pf_to_dev(vf->pf), "VF-%d trying to configure more than allocated number of queues: %d\n",
vf->vf_id, min_t(u16, vsi->alloc_txq, vsi->alloc_rxq));
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
quanta_size = qquanta->quanta_size;
if (quanta_size > ICE_MAX_QUANTA_SIZE ||
quanta_size < ICE_MIN_QUANTA_SIZE) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
if (quanta_size % 64) {
dev_err(ice_pf_to_dev(vf->pf), "quanta size should be the product of 64\n");
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
ret = ice_vf_cfg_q_quanta_profile(vf, quanta_size,
&quanta_prof_id);
if (ret) {
v_ret = VIRTCHNL_STATUS_ERR_NOT_SUPPORTED;
goto err;
}
for (i = start_qid; i < end_qid; i++)
vsi->tx_rings[i]->quanta_prof_id = quanta_prof_id;
err:
/* send the response to the VF */
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_QUANTA,
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
*/
int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg)
{
struct virtchnl_vsi_queue_config_info *qci =
(struct virtchnl_vsi_queue_config_info *)msg;
struct virtchnl_queue_pair_info *qpi;
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
int i = -1, q_idx;
bool ena_ts;
u8 act_prt;
mutex_lock(&pf->lag_mutex);
act_prt = ice_lag_prepare_vf_reset(pf->lag);
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states))
goto error_param;
if (!ice_vc_isvalid_vsi_id(vf, qci->vsi_id))
goto error_param;
vsi = ice_get_vf_vsi(vf);
if (!vsi)
goto error_param;
if (qci->num_queue_pairs > ICE_MAX_RSS_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));
goto error_param;
}
for (i = 0; i < qci->num_queue_pairs; i++) {
if (!qci->qpair[i].rxq.crc_disable)
continue;
if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_CRC) ||
vf->vlan_strip_ena)
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(vsi, qpi->txq.queue_id)) {
goto error_param;
}
q_idx = qpi->rxq.queue_id;
/* make sure selected "q_idx" is in valid range of queues
* for selected "vsi"
*/
if (q_idx >= vsi->alloc_txq || q_idx >= vsi->alloc_rxq) {
goto error_param;
}
/* copy Tx queue info from VF into VSI */
if (qpi->txq.ring_len > 0) {
vsi->tx_rings[q_idx]->dma = qpi->txq.dma_ring_addr;
vsi->tx_rings[q_idx]->count = qpi->txq.ring_len;
/* Disable any existing queue first */
if (ice_vf_vsi_dis_single_txq(vf, vsi, q_idx))
goto error_param;
/* Configure a queue with the requested settings */
if (ice_vsi_cfg_single_txq(vsi, vsi->tx_rings, q_idx)) {
dev_warn(ice_pf_to_dev(pf), "VF-%d failed to configure TX queue %d\n",
vf->vf_id, q_idx);
goto error_param;
}
}
/* copy Rx queue info from VF into VSI */
if (qpi->rxq.ring_len > 0) {
u16 max_frame_size = ice_vc_get_max_frame_size(vf);
struct ice_rx_ring *ring = vsi->rx_rings[q_idx];
u32 rxdid;
ring->dma = qpi->rxq.dma_ring_addr;
ring->count = qpi->rxq.ring_len;
if (qpi->rxq.crc_disable)
ring->flags |= ICE_RX_FLAGS_CRC_STRIP_DIS;
else
ring->flags &= ~ICE_RX_FLAGS_CRC_STRIP_DIS;
if (qpi->rxq.databuffer_size != 0 &&
(qpi->rxq.databuffer_size > ((16 * 1024) - 128) ||
qpi->rxq.databuffer_size < 1024))
goto error_param;
ring->rx_buf_len = qpi->rxq.databuffer_size;
if (qpi->rxq.max_pkt_size > max_frame_size ||
qpi->rxq.max_pkt_size < 64)
goto error_param;
ring->max_frame = qpi->rxq.max_pkt_size;
/* add space for the port VLAN since the VF driver is
* not expected to account for it in the MTU
* calculation
*/
if (ice_vf_is_port_vlan_ena(vf))
ring->max_frame += VLAN_HLEN;
if (ice_vsi_cfg_single_rxq(vsi, q_idx)) {
dev_warn(ice_pf_to_dev(pf), "VF-%d failed to configure RX queue %d\n",
vf->vf_id, q_idx);
goto error_param;
}
/* If Rx flex desc is supported, select RXDID for Rx
* queues. Otherwise, use legacy 32byte descriptor
* format. Legacy 16byte descriptor is not supported.
* If this RXDID is selected, return error.
*/
if (vf->driver_caps &
VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC) {
rxdid = qpi->rxq.rxdid;
if (!(BIT(rxdid) & pf->supported_rxdids))
goto error_param;
} else {
rxdid = ICE_RXDID_LEGACY_1;
}
ena_ts = ((vf->driver_caps &
VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC) &&
(vf->driver_caps & VIRTCHNL_VF_CAP_PTP) &&
(qpi->rxq.flags & VIRTCHNL_PTP_RX_TSTAMP));
ice_write_qrxflxp_cntxt(&vsi->back->hw,
vsi->rxq_map[q_idx], rxdid,
ICE_RXDID_PRIO, ena_ts);
}
}
ice_lag_complete_vf_reset(pf->lag, act_prt);
mutex_unlock(&pf->lag_mutex);
/* send the response to the VF */
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
VIRTCHNL_STATUS_SUCCESS, NULL, 0);
error_param:
/* disable whatever we can */
for (; i >= 0; i--) {
if (ice_vsi_ctrl_one_rx_ring(vsi, false, i, true))
dev_err(ice_pf_to_dev(pf), "VF-%d could not disable RX queue %d\n",
vf->vf_id, i);
if (ice_vf_vsi_dis_single_txq(vf, vsi, i))
dev_err(ice_pf_to_dev(pf), "VF-%d could not disable TX queue %d\n",
vf->vf_id, i);
}
ice_lag_complete_vf_reset(pf->lag, act_prt);
mutex_unlock(&pf->lag_mutex);
/* send the response to the VF */
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
VIRTCHNL_STATUS_ERR_PARAM, NULL, 0);
}
/**
* 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.
*/
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;
struct device *dev;
u16 cur_queues;
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_RSS_QS_PER_VF) {
dev_err(dev, "VF %d tried to request more than %d queues.\n",
vf->vf_id, ICE_MAX_RSS_QS_PER_VF);
vfres->num_queue_pairs = ICE_MAX_RSS_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_RSS_QS_PER_VF);
} else {
/* request is successful, then reset VF */
vf->num_req_qs = req_queues;
ice_reset_vf(vf, ICE_VF_RESET_NOTIFY);
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));
}
Reference in New Issue View Git Blame Copy Permalink