numam-dpdk/drivers/net/mlx5/mlx5_devx.c

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2020 Mellanox Technologies, Ltd
*/
#include <stddef.h>
#include <errno.h>
#include <stdbool.h>
#include <string.h>
#include <stdint.h>
#include <sys/queue.h>
#include <rte_malloc.h>
#include <rte_common.h>
#include <rte_eal_paging.h>
#include <mlx5_glue.h>
#include <mlx5_devx_cmds.h>
#include <mlx5_common_devx.h>
#include <mlx5_malloc.h>
#include "mlx5.h"
#include "mlx5_common_os.h"
#include "mlx5_rxtx.h"
#include "mlx5_utils.h"
#include "mlx5_devx.h"
#include "mlx5_flow.h"
#include "mlx5_flow_os.h"
/**
* Modify RQ vlan stripping offload
*
* @param rxq_obj
* Rx queue object.
*
* @return
* 0 on success, non-0 otherwise
*/
static int
mlx5_rxq_obj_modify_rq_vlan_strip(struct mlx5_rxq_obj *rxq_obj, int on)
{
struct mlx5_devx_modify_rq_attr rq_attr;
memset(&rq_attr, 0, sizeof(rq_attr));
rq_attr.rq_state = MLX5_RQC_STATE_RDY;
rq_attr.state = MLX5_RQC_STATE_RDY;
rq_attr.vsd = (on ? 0 : 1);
rq_attr.modify_bitmask = MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_VSD;
return mlx5_devx_cmd_modify_rq(rxq_obj->rq_obj.rq, &rq_attr);
}
/**
* Modify RQ using DevX API.
*
* @param rxq_obj
* DevX Rx queue object.
* @param type
* Type of change queue state.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_devx_modify_rq(struct mlx5_rxq_obj *rxq_obj, uint8_t type)
{
struct mlx5_devx_modify_rq_attr rq_attr;
memset(&rq_attr, 0, sizeof(rq_attr));
switch (type) {
case MLX5_RXQ_MOD_ERR2RST:
rq_attr.rq_state = MLX5_RQC_STATE_ERR;
rq_attr.state = MLX5_RQC_STATE_RST;
break;
case MLX5_RXQ_MOD_RST2RDY:
rq_attr.rq_state = MLX5_RQC_STATE_RST;
rq_attr.state = MLX5_RQC_STATE_RDY;
break;
case MLX5_RXQ_MOD_RDY2ERR:
rq_attr.rq_state = MLX5_RQC_STATE_RDY;
rq_attr.state = MLX5_RQC_STATE_ERR;
break;
case MLX5_RXQ_MOD_RDY2RST:
rq_attr.rq_state = MLX5_RQC_STATE_RDY;
rq_attr.state = MLX5_RQC_STATE_RST;
break;
default:
break;
}
return mlx5_devx_cmd_modify_rq(rxq_obj->rq_obj.rq, &rq_attr);
}
/**
* Modify SQ using DevX API.
*
* @param txq_obj
* DevX Tx queue object.
* @param type
* Type of change queue state.
* @param dev_port
* Unnecessary.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_devx_modify_sq(struct mlx5_txq_obj *obj, enum mlx5_txq_modify_type type,
uint8_t dev_port)
{
struct mlx5_devx_modify_sq_attr msq_attr = { 0 };
int ret;
if (type != MLX5_TXQ_MOD_RST2RDY) {
/* Change queue state to reset. */
if (type == MLX5_TXQ_MOD_ERR2RDY)
msq_attr.sq_state = MLX5_SQC_STATE_ERR;
else
msq_attr.sq_state = MLX5_SQC_STATE_RDY;
msq_attr.state = MLX5_SQC_STATE_RST;
ret = mlx5_devx_cmd_modify_sq(obj->sq_obj.sq, &msq_attr);
if (ret) {
DRV_LOG(ERR, "Cannot change the Tx SQ state to RESET"
" %s", strerror(errno));
rte_errno = errno;
return ret;
}
}
if (type != MLX5_TXQ_MOD_RDY2RST) {
/* Change queue state to ready. */
msq_attr.sq_state = MLX5_SQC_STATE_RST;
msq_attr.state = MLX5_SQC_STATE_RDY;
ret = mlx5_devx_cmd_modify_sq(obj->sq_obj.sq, &msq_attr);
if (ret) {
DRV_LOG(ERR, "Cannot change the Tx SQ state to READY"
" %s", strerror(errno));
rte_errno = errno;
return ret;
}
}
/*
* The dev_port variable is relevant only in Verbs API, and there is a
* pointer that points to this function and a parallel function in verbs
* intermittently, so they should have the same parameters.
*/
(void)dev_port;
return 0;
}
/**
* Destroy the Rx queue DevX object.
*
* @param rxq_obj
* Rxq object to destroy.
*/
static void
mlx5_rxq_release_devx_resources(struct mlx5_rxq_obj *rxq_obj)
{
mlx5_devx_rq_destroy(&rxq_obj->rq_obj);
memset(&rxq_obj->rq_obj, 0, sizeof(rxq_obj->rq_obj));
mlx5_devx_cq_destroy(&rxq_obj->cq_obj);
memset(&rxq_obj->cq_obj, 0, sizeof(rxq_obj->cq_obj));
}
/**
* Release an Rx DevX queue object.
*
* @param rxq_obj
* DevX Rx queue object.
*/
static void
mlx5_rxq_devx_obj_release(struct mlx5_rxq_obj *rxq_obj)
{
MLX5_ASSERT(rxq_obj);
if (rxq_obj->rxq_ctrl->type == MLX5_RXQ_TYPE_HAIRPIN) {
MLX5_ASSERT(rxq_obj->rq);
mlx5_devx_modify_rq(rxq_obj, MLX5_RXQ_MOD_RDY2RST);
claim_zero(mlx5_devx_cmd_destroy(rxq_obj->rq));
} else {
MLX5_ASSERT(rxq_obj->cq_obj.cq);
MLX5_ASSERT(rxq_obj->rq_obj.rq);
mlx5_rxq_release_devx_resources(rxq_obj);
if (rxq_obj->devx_channel)
mlx5_os_devx_destroy_event_channel
(rxq_obj->devx_channel);
}
}
/**
* Get event for an Rx DevX queue object.
*
* @param rxq_obj
* DevX Rx queue object.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_rx_devx_get_event(struct mlx5_rxq_obj *rxq_obj)
{
#ifdef HAVE_IBV_DEVX_EVENT
union {
struct mlx5dv_devx_async_event_hdr event_resp;
uint8_t buf[sizeof(struct mlx5dv_devx_async_event_hdr) + 128];
} out;
int ret = mlx5_glue->devx_get_event(rxq_obj->devx_channel,
&out.event_resp,
sizeof(out.buf));
if (ret < 0) {
rte_errno = errno;
return -rte_errno;
}
if (out.event_resp.cookie != (uint64_t)(uintptr_t)rxq_obj->cq_obj.cq) {
rte_errno = EINVAL;
return -rte_errno;
}
return 0;
#else
(void)rxq_obj;
rte_errno = ENOTSUP;
return -rte_errno;
#endif /* HAVE_IBV_DEVX_EVENT */
}
/**
* Create a RQ object using DevX.
*
* @param dev
* Pointer to Ethernet device.
* @param idx
* Queue index in DPDK Rx queue array.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_rxq_create_devx_rq_resources(struct rte_eth_dev *dev, uint16_t idx)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
struct mlx5_rxq_ctrl *rxq_ctrl =
container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
struct mlx5_devx_create_rq_attr rq_attr = { 0 };
uint16_t log_desc_n = rxq_data->elts_n - rxq_data->sges_n;
uint32_t wqe_size, log_wqe_size;
/* Fill RQ attributes. */
rq_attr.mem_rq_type = MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE;
rq_attr.flush_in_error_en = 1;
rq_attr.vsd = (rxq_data->vlan_strip) ? 0 : 1;
rq_attr.cqn = rxq_ctrl->obj->cq_obj.cq->id;
rq_attr.scatter_fcs = (rxq_data->crc_present) ? 1 : 0;
/* Fill WQ attributes for this RQ. */
if (mlx5_rxq_mprq_enabled(rxq_data)) {
rq_attr.wq_attr.wq_type = MLX5_WQ_TYPE_CYCLIC_STRIDING_RQ;
/*
* Number of strides in each WQE:
* 512*2^single_wqe_log_num_of_strides.
*/
rq_attr.wq_attr.single_wqe_log_num_of_strides =
rxq_data->strd_num_n -
MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES;
/* Stride size = (2^single_stride_log_num_of_bytes)*64B. */
rq_attr.wq_attr.single_stride_log_num_of_bytes =
rxq_data->strd_sz_n -
MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES;
wqe_size = sizeof(struct mlx5_wqe_mprq);
} else {
rq_attr.wq_attr.wq_type = MLX5_WQ_TYPE_CYCLIC;
wqe_size = sizeof(struct mlx5_wqe_data_seg);
}
log_wqe_size = log2above(wqe_size) + rxq_data->sges_n;
wqe_size = 1 << log_wqe_size; /* round up power of two.*/
rq_attr.wq_attr.log_wq_stride = log_wqe_size;
rq_attr.wq_attr.log_wq_sz = log_desc_n;
rq_attr.wq_attr.end_padding_mode = priv->config.hw_padding ?
MLX5_WQ_END_PAD_MODE_ALIGN :
MLX5_WQ_END_PAD_MODE_NONE;
rq_attr.wq_attr.pd = priv->sh->pdn;
/* Create RQ using DevX API. */
return mlx5_devx_rq_create(priv->sh->ctx, &rxq_ctrl->obj->rq_obj,
wqe_size, log_desc_n, &rq_attr,
rxq_ctrl->socket);
}
/**
* Create a DevX CQ object for an Rx queue.
*
* @param dev
* Pointer to Ethernet device.
* @param idx
* Queue index in DPDK Rx queue array.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_rxq_create_devx_cq_resources(struct rte_eth_dev *dev, uint16_t idx)
{
struct mlx5_devx_cq *cq_obj = 0;
struct mlx5_devx_cq_attr cq_attr = { 0 };
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_dev_ctx_shared *sh = priv->sh;
struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
struct mlx5_rxq_ctrl *rxq_ctrl =
container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
unsigned int cqe_n = mlx5_rxq_cqe_num(rxq_data);
uint32_t log_cqe_n;
uint16_t event_nums[1] = { 0 };
int ret = 0;
if (priv->config.cqe_comp && !rxq_data->hw_timestamp &&
!rxq_data->lro) {
cq_attr.cqe_comp_en = 1u;
rxq_data->mcqe_format = priv->config.cqe_comp_fmt;
rxq_data->byte_mask = UINT32_MAX;
switch (priv->config.cqe_comp_fmt) {
case MLX5_CQE_RESP_FORMAT_HASH:
/* fallthrough */
case MLX5_CQE_RESP_FORMAT_CSUM:
/*
* Select CSUM miniCQE format only for non-vectorized
* MPRQ Rx burst, use HASH miniCQE format for others.
*/
if (mlx5_rxq_check_vec_support(rxq_data) < 0 &&
mlx5_rxq_mprq_enabled(rxq_data))
cq_attr.mini_cqe_res_format =
MLX5_CQE_RESP_FORMAT_CSUM_STRIDX;
else
cq_attr.mini_cqe_res_format =
MLX5_CQE_RESP_FORMAT_HASH;
rxq_data->mcqe_format = cq_attr.mini_cqe_res_format;
break;
case MLX5_CQE_RESP_FORMAT_FTAG_STRIDX:
rxq_data->byte_mask = MLX5_LEN_WITH_MARK_MASK;
/* fallthrough */
case MLX5_CQE_RESP_FORMAT_CSUM_STRIDX:
cq_attr.mini_cqe_res_format = priv->config.cqe_comp_fmt;
break;
case MLX5_CQE_RESP_FORMAT_L34H_STRIDX:
cq_attr.mini_cqe_res_format = 0;
cq_attr.mini_cqe_res_format_ext = 1;
break;
}
DRV_LOG(DEBUG,
"Port %u Rx CQE compression is enabled, format %d.",
dev->data->port_id, priv->config.cqe_comp_fmt);
/*
* For vectorized Rx, it must not be doubled in order to
* make cq_ci and rq_ci aligned.
*/
if (mlx5_rxq_check_vec_support(rxq_data) < 0)
cqe_n *= 2;
} else if (priv->config.cqe_comp && rxq_data->hw_timestamp) {
DRV_LOG(DEBUG,
"Port %u Rx CQE compression is disabled for HW"
" timestamp.",
dev->data->port_id);
} else if (priv->config.cqe_comp && rxq_data->lro) {
DRV_LOG(DEBUG,
"Port %u Rx CQE compression is disabled for LRO.",
dev->data->port_id);
}
cq_attr.uar_page_id = mlx5_os_get_devx_uar_page_id(sh->devx_rx_uar);
log_cqe_n = log2above(cqe_n);
/* Create CQ using DevX API. */
ret = mlx5_devx_cq_create(sh->ctx, &rxq_ctrl->obj->cq_obj, log_cqe_n,
&cq_attr, sh->numa_node);
if (ret)
return ret;
cq_obj = &rxq_ctrl->obj->cq_obj;
rxq_data->cqes = (volatile struct mlx5_cqe (*)[])
(uintptr_t)cq_obj->cqes;
rxq_data->cq_db = cq_obj->db_rec;
rxq_data->cq_uar = mlx5_os_get_devx_uar_base_addr(sh->devx_rx_uar);
rxq_data->cqe_n = log_cqe_n;
rxq_data->cqn = cq_obj->cq->id;
if (rxq_ctrl->obj->devx_channel) {
ret = mlx5_os_devx_subscribe_devx_event
(rxq_ctrl->obj->devx_channel,
cq_obj->cq->obj,
sizeof(event_nums),
event_nums,
(uint64_t)(uintptr_t)cq_obj->cq);
if (ret) {
DRV_LOG(ERR, "Fail to subscribe CQ to event channel.");
ret = errno;
mlx5_devx_cq_destroy(cq_obj);
memset(cq_obj, 0, sizeof(*cq_obj));
rte_errno = ret;
return -ret;
}
}
return 0;
}
/**
* Create the Rx hairpin queue object.
*
* @param dev
* Pointer to Ethernet device.
* @param idx
* Queue index in DPDK Rx queue array.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_rxq_obj_hairpin_new(struct rte_eth_dev *dev, uint16_t idx)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
struct mlx5_rxq_ctrl *rxq_ctrl =
container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
struct mlx5_devx_create_rq_attr attr = { 0 };
struct mlx5_rxq_obj *tmpl = rxq_ctrl->obj;
uint32_t max_wq_data;
MLX5_ASSERT(rxq_data);
MLX5_ASSERT(tmpl);
tmpl->rxq_ctrl = rxq_ctrl;
attr.hairpin = 1;
max_wq_data = priv->config.hca_attr.log_max_hairpin_wq_data_sz;
/* Jumbo frames > 9KB should be supported, and more packets. */
if (priv->config.log_hp_size != (uint32_t)MLX5_ARG_UNSET) {
if (priv->config.log_hp_size > max_wq_data) {
DRV_LOG(ERR, "Total data size %u power of 2 is "
"too large for hairpin.",
priv->config.log_hp_size);
rte_errno = ERANGE;
return -rte_errno;
}
attr.wq_attr.log_hairpin_data_sz = priv->config.log_hp_size;
} else {
attr.wq_attr.log_hairpin_data_sz =
(max_wq_data < MLX5_HAIRPIN_JUMBO_LOG_SIZE) ?
max_wq_data : MLX5_HAIRPIN_JUMBO_LOG_SIZE;
}
/* Set the packets number to the maximum value for performance. */
attr.wq_attr.log_hairpin_num_packets =
attr.wq_attr.log_hairpin_data_sz -
MLX5_HAIRPIN_QUEUE_STRIDE;
tmpl->rq = mlx5_devx_cmd_create_rq(priv->sh->ctx, &attr,
rxq_ctrl->socket);
if (!tmpl->rq) {
DRV_LOG(ERR,
"Port %u Rx hairpin queue %u can't create rq object.",
dev->data->port_id, idx);
rte_errno = errno;
return -rte_errno;
}
dev->data->rx_queue_state[idx] = RTE_ETH_QUEUE_STATE_HAIRPIN;
return 0;
}
/**
* Create the Rx queue DevX object.
*
* @param dev
* Pointer to Ethernet device.
* @param idx
* Queue index in DPDK Rx queue array.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_rxq_devx_obj_new(struct rte_eth_dev *dev, uint16_t idx)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
struct mlx5_rxq_ctrl *rxq_ctrl =
container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
struct mlx5_rxq_obj *tmpl = rxq_ctrl->obj;
int ret = 0;
MLX5_ASSERT(rxq_data);
MLX5_ASSERT(tmpl);
if (rxq_ctrl->type == MLX5_RXQ_TYPE_HAIRPIN)
return mlx5_rxq_obj_hairpin_new(dev, idx);
tmpl->rxq_ctrl = rxq_ctrl;
if (rxq_ctrl->irq) {
int devx_ev_flag =
MLX5DV_DEVX_CREATE_EVENT_CHANNEL_FLAGS_OMIT_EV_DATA;
tmpl->devx_channel = mlx5_os_devx_create_event_channel
(priv->sh->ctx,
devx_ev_flag);
if (!tmpl->devx_channel) {
rte_errno = errno;
DRV_LOG(ERR, "Failed to create event channel %d.",
rte_errno);
goto error;
}
tmpl->fd = mlx5_os_get_devx_channel_fd(tmpl->devx_channel);
}
/* Create CQ using DevX API. */
ret = mlx5_rxq_create_devx_cq_resources(dev, idx);
if (ret) {
DRV_LOG(ERR, "Failed to create CQ.");
goto error;
}
/* Create RQ using DevX API. */
ret = mlx5_rxq_create_devx_rq_resources(dev, idx);
if (ret) {
DRV_LOG(ERR, "Port %u Rx queue %u RQ creation failure.",
dev->data->port_id, idx);
rte_errno = ENOMEM;
goto error;
}
/* Change queue state to ready. */
ret = mlx5_devx_modify_rq(tmpl, MLX5_RXQ_MOD_RST2RDY);
if (ret)
goto error;
rxq_data->wqes = (void *)(uintptr_t)tmpl->rq_obj.umem_buf;
rxq_data->rq_db = (uint32_t *)(uintptr_t)tmpl->rq_obj.db_rec;
rxq_data->cq_arm_sn = 0;
rxq_data->cq_ci = 0;
mlx5_rxq_initialize(rxq_data);
dev->data->rx_queue_state[idx] = RTE_ETH_QUEUE_STATE_STARTED;
rxq_ctrl->wqn = tmpl->rq_obj.rq->id;
return 0;
error:
ret = rte_errno; /* Save rte_errno before cleanup. */
mlx5_rxq_devx_obj_release(tmpl);
rte_errno = ret; /* Restore rte_errno. */
return -rte_errno;
}
/**
* Prepare RQT attribute structure for DevX RQT API.
*
* @param dev
* Pointer to Ethernet device.
* @param log_n
* Log of number of queues in the array.
* @param ind_tbl
* DevX indirection table object.
*
* @return
* The RQT attr object initialized, NULL otherwise and rte_errno is set.
*/
static struct mlx5_devx_rqt_attr *
mlx5_devx_ind_table_create_rqt_attr(struct rte_eth_dev *dev,
const unsigned int log_n,
const uint16_t *queues,
const uint32_t queues_n)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_devx_rqt_attr *rqt_attr = NULL;
const unsigned int rqt_n = 1 << log_n;
unsigned int i, j;
rqt_attr = mlx5_malloc(MLX5_MEM_ZERO, sizeof(*rqt_attr) +
rqt_n * sizeof(uint32_t), 0, SOCKET_ID_ANY);
if (!rqt_attr) {
DRV_LOG(ERR, "Port %u cannot allocate RQT resources.",
dev->data->port_id);
rte_errno = ENOMEM;
return NULL;
}
rqt_attr->rqt_max_size = priv->config.ind_table_max_size;
rqt_attr->rqt_actual_size = rqt_n;
for (i = 0; i != queues_n; ++i) {
struct mlx5_rxq_data *rxq = (*priv->rxqs)[queues[i]];
struct mlx5_rxq_ctrl *rxq_ctrl =
container_of(rxq, struct mlx5_rxq_ctrl, rxq);
rqt_attr->rq_list[i] = rxq_ctrl->obj->rq_obj.rq->id;
}
MLX5_ASSERT(i > 0);
for (j = 0; i != rqt_n; ++j, ++i)
rqt_attr->rq_list[i] = rqt_attr->rq_list[j];
return rqt_attr;
}
/**
* Create RQT using DevX API as a filed of indirection table.
*
* @param dev
* Pointer to Ethernet device.
* @param log_n
* Log of number of queues in the array.
* @param ind_tbl
* DevX indirection table object.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_devx_ind_table_new(struct rte_eth_dev *dev, const unsigned int log_n,
struct mlx5_ind_table_obj *ind_tbl)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_devx_rqt_attr *rqt_attr = NULL;
MLX5_ASSERT(ind_tbl);
rqt_attr = mlx5_devx_ind_table_create_rqt_attr(dev, log_n,
ind_tbl->queues,
ind_tbl->queues_n);
if (!rqt_attr)
return -rte_errno;
ind_tbl->rqt = mlx5_devx_cmd_create_rqt(priv->sh->ctx, rqt_attr);
mlx5_free(rqt_attr);
if (!ind_tbl->rqt) {
DRV_LOG(ERR, "Port %u cannot create DevX RQT.",
dev->data->port_id);
rte_errno = errno;
return -rte_errno;
}
return 0;
}
/**
* Modify RQT using DevX API as a filed of indirection table.
*
* @param dev
* Pointer to Ethernet device.
* @param log_n
* Log of number of queues in the array.
* @param ind_tbl
* DevX indirection table object.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_devx_ind_table_modify(struct rte_eth_dev *dev, const unsigned int log_n,
const uint16_t *queues, const uint32_t queues_n,
struct mlx5_ind_table_obj *ind_tbl)
{
int ret = 0;
struct mlx5_devx_rqt_attr *rqt_attr = NULL;
MLX5_ASSERT(ind_tbl);
rqt_attr = mlx5_devx_ind_table_create_rqt_attr(dev, log_n,
queues,
queues_n);
if (!rqt_attr)
return -rte_errno;
ret = mlx5_devx_cmd_modify_rqt(ind_tbl->rqt, rqt_attr);
mlx5_free(rqt_attr);
if (ret)
DRV_LOG(ERR, "Port %u cannot modify DevX RQT.",
dev->data->port_id);
return ret;
}
/**
* Destroy the DevX RQT object.
*
* @param ind_table
* Indirection table to release.
*/
static void
mlx5_devx_ind_table_destroy(struct mlx5_ind_table_obj *ind_tbl)
{
claim_zero(mlx5_devx_cmd_destroy(ind_tbl->rqt));
}
/**
* Set TIR attribute struct with relevant input values.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] rss_key
* RSS key for the Rx hash queue.
* @param[in] hash_fields
* Verbs protocol hash field to make the RSS on.
* @param[in] ind_tbl
* Indirection table for TIR.
* @param[in] tunnel
* Tunnel type.
* @param[out] tir_attr
* Parameters structure for TIR creation/modification.
*
* @return
* The Verbs/DevX object initialised index, 0 otherwise and rte_errno is set.
*/
static void
mlx5_devx_tir_attr_set(struct rte_eth_dev *dev, const uint8_t *rss_key,
uint64_t hash_fields,
const struct mlx5_ind_table_obj *ind_tbl,
int tunnel, struct mlx5_devx_tir_attr *tir_attr)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[ind_tbl->queues[0]];
struct mlx5_rxq_ctrl *rxq_ctrl =
container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
enum mlx5_rxq_type rxq_obj_type = rxq_ctrl->type;
bool lro = true;
uint32_t i;
/* Enable TIR LRO only if all the queues were configured for. */
for (i = 0; i < ind_tbl->queues_n; ++i) {
if (!(*priv->rxqs)[ind_tbl->queues[i]]->lro) {
lro = false;
break;
}
}
memset(tir_attr, 0, sizeof(*tir_attr));
tir_attr->disp_type = MLX5_TIRC_DISP_TYPE_INDIRECT;
tir_attr->rx_hash_fn = MLX5_RX_HASH_FN_TOEPLITZ;
tir_attr->tunneled_offload_en = !!tunnel;
/* If needed, translate hash_fields bitmap to PRM format. */
if (hash_fields) {
struct mlx5_rx_hash_field_select *rx_hash_field_select =
#ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
hash_fields & IBV_RX_HASH_INNER ?
&tir_attr->rx_hash_field_selector_inner :
#endif
&tir_attr->rx_hash_field_selector_outer;
/* 1 bit: 0: IPv4, 1: IPv6. */
rx_hash_field_select->l3_prot_type =
!!(hash_fields & MLX5_IPV6_IBV_RX_HASH);
/* 1 bit: 0: TCP, 1: UDP. */
rx_hash_field_select->l4_prot_type =
!!(hash_fields & MLX5_UDP_IBV_RX_HASH);
/* Bitmask which sets which fields to use in RX Hash. */
rx_hash_field_select->selected_fields =
((!!(hash_fields & MLX5_L3_SRC_IBV_RX_HASH)) <<
MLX5_RX_HASH_FIELD_SELECT_SELECTED_FIELDS_SRC_IP) |
(!!(hash_fields & MLX5_L3_DST_IBV_RX_HASH)) <<
MLX5_RX_HASH_FIELD_SELECT_SELECTED_FIELDS_DST_IP |
(!!(hash_fields & MLX5_L4_SRC_IBV_RX_HASH)) <<
MLX5_RX_HASH_FIELD_SELECT_SELECTED_FIELDS_L4_SPORT |
(!!(hash_fields & MLX5_L4_DST_IBV_RX_HASH)) <<
MLX5_RX_HASH_FIELD_SELECT_SELECTED_FIELDS_L4_DPORT;
}
if (rxq_obj_type == MLX5_RXQ_TYPE_HAIRPIN)
tir_attr->transport_domain = priv->sh->td->id;
else
tir_attr->transport_domain = priv->sh->tdn;
memcpy(tir_attr->rx_hash_toeplitz_key, rss_key, MLX5_RSS_HASH_KEY_LEN);
tir_attr->indirect_table = ind_tbl->rqt->id;
if (dev->data->dev_conf.lpbk_mode)
tir_attr->self_lb_block =
MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
if (lro) {
tir_attr->lro_timeout_period_usecs = priv->config.lro.timeout;
tir_attr->lro_max_msg_sz = priv->max_lro_msg_size;
tir_attr->lro_enable_mask =
MLX5_TIRC_LRO_ENABLE_MASK_IPV4_LRO |
MLX5_TIRC_LRO_ENABLE_MASK_IPV6_LRO;
}
}
/**
* Create an Rx Hash queue.
*
* @param dev
* Pointer to Ethernet device.
* @param hrxq
* Pointer to Rx Hash queue.
* @param tunnel
* Tunnel type.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_devx_hrxq_new(struct rte_eth_dev *dev, struct mlx5_hrxq *hrxq,
int tunnel __rte_unused)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_devx_tir_attr tir_attr = {0};
int err;
mlx5_devx_tir_attr_set(dev, hrxq->rss_key, hrxq->hash_fields,
hrxq->ind_table, tunnel, &tir_attr);
hrxq->tir = mlx5_devx_cmd_create_tir(priv->sh->ctx, &tir_attr);
if (!hrxq->tir) {
DRV_LOG(ERR, "Port %u cannot create DevX TIR.",
dev->data->port_id);
rte_errno = errno;
goto error;
}
#if defined(HAVE_IBV_FLOW_DV_SUPPORT) || !defined(HAVE_INFINIBAND_VERBS_H)
if (mlx5_flow_os_create_flow_action_dest_devx_tir(hrxq->tir,
&hrxq->action)) {
rte_errno = errno;
goto error;
}
#endif
return 0;
error:
err = rte_errno; /* Save rte_errno before cleanup. */
if (hrxq->tir)
claim_zero(mlx5_devx_cmd_destroy(hrxq->tir));
rte_errno = err; /* Restore rte_errno. */
return -rte_errno;
}
/**
* Destroy a DevX TIR object.
*
* @param hrxq
* Hash Rx queue to release its tir.
*/
static void
mlx5_devx_tir_destroy(struct mlx5_hrxq *hrxq)
{
claim_zero(mlx5_devx_cmd_destroy(hrxq->tir));
}
/**
* Modify an Rx Hash queue configuration.
*
* @param dev
* Pointer to Ethernet device.
* @param hrxq
* Hash Rx queue to modify.
* @param rss_key
* RSS key for the Rx hash queue.
* @param hash_fields
* Verbs protocol hash field to make the RSS on.
* @param[in] ind_tbl
* Indirection table for TIR.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_devx_hrxq_modify(struct rte_eth_dev *dev, struct mlx5_hrxq *hrxq,
const uint8_t *rss_key,
uint64_t hash_fields,
const struct mlx5_ind_table_obj *ind_tbl)
{
struct mlx5_devx_modify_tir_attr modify_tir = {0};
/*
* untested for modification fields:
* - rx_hash_symmetric not set in hrxq_new(),
* - rx_hash_fn set hard-coded in hrxq_new(),
* - lro_xxx not set after rxq setup
*/
if (ind_tbl != hrxq->ind_table)
modify_tir.modify_bitmask |=
MLX5_MODIFY_TIR_IN_MODIFY_BITMASK_INDIRECT_TABLE;
if (hash_fields != hrxq->hash_fields ||
memcmp(hrxq->rss_key, rss_key, MLX5_RSS_HASH_KEY_LEN))
modify_tir.modify_bitmask |=
MLX5_MODIFY_TIR_IN_MODIFY_BITMASK_HASH;
mlx5_devx_tir_attr_set(dev, rss_key, hash_fields, ind_tbl,
0, /* N/A - tunnel modification unsupported */
&modify_tir.tir);
modify_tir.tirn = hrxq->tir->id;
if (mlx5_devx_cmd_modify_tir(hrxq->tir, &modify_tir)) {
DRV_LOG(ERR, "port %u cannot modify DevX TIR",
dev->data->port_id);
rte_errno = errno;
return -rte_errno;
}
return 0;
}
/**
* Create a DevX drop action for Rx Hash queue.
*
* @param dev
* Pointer to Ethernet device.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_devx_drop_action_create(struct rte_eth_dev *dev)
{
(void)dev;
DRV_LOG(ERR, "DevX drop action is not supported yet.");
rte_errno = ENOTSUP;
return -rte_errno;
}
/**
* Release a drop hash Rx queue.
*
* @param dev
* Pointer to Ethernet device.
*/
static void
mlx5_devx_drop_action_destroy(struct rte_eth_dev *dev)
{
(void)dev;
DRV_LOG(ERR, "DevX drop action is not supported yet.");
rte_errno = ENOTSUP;
}
/**
* Create the Tx hairpin queue object.
*
* @param dev
* Pointer to Ethernet device.
* @param idx
* Queue index in DPDK Tx queue array.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_txq_obj_hairpin_new(struct rte_eth_dev *dev, uint16_t idx)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_txq_data *txq_data = (*priv->txqs)[idx];
struct mlx5_txq_ctrl *txq_ctrl =
container_of(txq_data, struct mlx5_txq_ctrl, txq);
struct mlx5_devx_create_sq_attr attr = { 0 };
struct mlx5_txq_obj *tmpl = txq_ctrl->obj;
uint32_t max_wq_data;
MLX5_ASSERT(txq_data);
MLX5_ASSERT(tmpl);
tmpl->txq_ctrl = txq_ctrl;
attr.hairpin = 1;
attr.tis_lst_sz = 1;
max_wq_data = priv->config.hca_attr.log_max_hairpin_wq_data_sz;
/* Jumbo frames > 9KB should be supported, and more packets. */
if (priv->config.log_hp_size != (uint32_t)MLX5_ARG_UNSET) {
if (priv->config.log_hp_size > max_wq_data) {
DRV_LOG(ERR, "Total data size %u power of 2 is "
"too large for hairpin.",
priv->config.log_hp_size);
rte_errno = ERANGE;
return -rte_errno;
}
attr.wq_attr.log_hairpin_data_sz = priv->config.log_hp_size;
} else {
attr.wq_attr.log_hairpin_data_sz =
(max_wq_data < MLX5_HAIRPIN_JUMBO_LOG_SIZE) ?
max_wq_data : MLX5_HAIRPIN_JUMBO_LOG_SIZE;
}
/* Set the packets number to the maximum value for performance. */
attr.wq_attr.log_hairpin_num_packets =
attr.wq_attr.log_hairpin_data_sz -
MLX5_HAIRPIN_QUEUE_STRIDE;
attr.tis_num = priv->sh->tis->id;
tmpl->sq = mlx5_devx_cmd_create_sq(priv->sh->ctx, &attr);
if (!tmpl->sq) {
DRV_LOG(ERR,
"Port %u tx hairpin queue %u can't create SQ object.",
dev->data->port_id, idx);
rte_errno = errno;
return -rte_errno;
}
return 0;
}
#if defined(HAVE_MLX5DV_DEVX_UAR_OFFSET) || !defined(HAVE_INFINIBAND_VERBS_H)
/**
* Destroy the Tx queue DevX object.
*
* @param txq_obj
* Txq object to destroy.
*/
static void
mlx5_txq_release_devx_resources(struct mlx5_txq_obj *txq_obj)
{
mlx5_devx_sq_destroy(&txq_obj->sq_obj);
memset(&txq_obj->sq_obj, 0, sizeof(txq_obj->sq_obj));
mlx5_devx_cq_destroy(&txq_obj->cq_obj);
memset(&txq_obj->cq_obj, 0, sizeof(txq_obj->cq_obj));
}
/**
* Create a SQ object and its resources using DevX.
*
* @param dev
* Pointer to Ethernet device.
* @param idx
* Queue index in DPDK Tx queue array.
* @param[in] log_desc_n
* Log of number of descriptors in queue.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_txq_create_devx_sq_resources(struct rte_eth_dev *dev, uint16_t idx,
uint16_t log_desc_n)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_txq_data *txq_data = (*priv->txqs)[idx];
struct mlx5_txq_ctrl *txq_ctrl =
container_of(txq_data, struct mlx5_txq_ctrl, txq);
struct mlx5_txq_obj *txq_obj = txq_ctrl->obj;
struct mlx5_devx_create_sq_attr sq_attr = {
.flush_in_error_en = 1,
.allow_multi_pkt_send_wqe = !!priv->config.mps,
.min_wqe_inline_mode = priv->config.hca_attr.vport_inline_mode,
.allow_swp = !!priv->config.swp,
.cqn = txq_obj->cq_obj.cq->id,
.tis_lst_sz = 1,
.tis_num = priv->sh->tis->id,
.wq_attr = (struct mlx5_devx_wq_attr){
.pd = priv->sh->pdn,
.uar_page =
mlx5_os_get_devx_uar_page_id(priv->sh->tx_uar),
},
};
/* Create Send Queue object with DevX. */
return mlx5_devx_sq_create(priv->sh->ctx, &txq_obj->sq_obj, log_desc_n,
&sq_attr, priv->sh->numa_node);
}
#endif
/**
* Create the Tx queue DevX object.
*
* @param dev
* Pointer to Ethernet device.
* @param idx
* Queue index in DPDK Tx queue array.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_txq_devx_obj_new(struct rte_eth_dev *dev, uint16_t idx)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_txq_data *txq_data = (*priv->txqs)[idx];
struct mlx5_txq_ctrl *txq_ctrl =
container_of(txq_data, struct mlx5_txq_ctrl, txq);
if (txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN)
return mlx5_txq_obj_hairpin_new(dev, idx);
#if !defined(HAVE_MLX5DV_DEVX_UAR_OFFSET) && defined(HAVE_INFINIBAND_VERBS_H)
DRV_LOG(ERR, "Port %u Tx queue %u cannot create with DevX, no UAR.",
dev->data->port_id, idx);
rte_errno = ENOMEM;
return -rte_errno;
#else
struct mlx5_dev_ctx_shared *sh = priv->sh;
struct mlx5_txq_obj *txq_obj = txq_ctrl->obj;
struct mlx5_devx_cq_attr cq_attr = {
.uar_page_id = mlx5_os_get_devx_uar_page_id(sh->tx_uar),
};
void *reg_addr;
uint32_t cqe_n, log_desc_n;
uint32_t wqe_n, wqe_size;
int ret = 0;
MLX5_ASSERT(txq_data);
MLX5_ASSERT(txq_obj);
txq_obj->txq_ctrl = txq_ctrl;
txq_obj->dev = dev;
cqe_n = (1UL << txq_data->elts_n) / MLX5_TX_COMP_THRESH +
1 + MLX5_TX_COMP_THRESH_INLINE_DIV;
log_desc_n = log2above(cqe_n);
cqe_n = 1UL << log_desc_n;
if (cqe_n > UINT16_MAX) {
DRV_LOG(ERR, "Port %u Tx queue %u requests to many CQEs %u.",
dev->data->port_id, txq_data->idx, cqe_n);
rte_errno = EINVAL;
return 0;
}
/* Create completion queue object with DevX. */
ret = mlx5_devx_cq_create(sh->ctx, &txq_obj->cq_obj, log_desc_n,
&cq_attr, priv->sh->numa_node);
if (ret) {
DRV_LOG(ERR, "Port %u Tx queue %u CQ creation failure.",
dev->data->port_id, idx);
goto error;
}
txq_data->cqe_n = log_desc_n;
txq_data->cqe_s = cqe_n;
txq_data->cqe_m = txq_data->cqe_s - 1;
txq_data->cqes = txq_obj->cq_obj.cqes;
txq_data->cq_ci = 0;
txq_data->cq_pi = 0;
txq_data->cq_db = txq_obj->cq_obj.db_rec;
*txq_data->cq_db = 0;
/*
* Adjust the amount of WQEs depending on inline settings.
* The number of descriptors should be enough to handle
* the specified number of packets. If queue is being created
* with Verbs the rdma-core does queue size adjustment
* internally in the mlx5_calc_sq_size(), we do the same
* for the queue being created with DevX at this point.
*/
wqe_size = txq_data->tso_en ?
RTE_ALIGN(txq_ctrl->max_tso_header, MLX5_WSEG_SIZE) : 0;
wqe_size += sizeof(struct mlx5_wqe_cseg) +
sizeof(struct mlx5_wqe_eseg) +
sizeof(struct mlx5_wqe_dseg);
if (txq_data->inlen_send)
wqe_size = RTE_MAX(wqe_size, sizeof(struct mlx5_wqe_cseg) +
sizeof(struct mlx5_wqe_eseg) +
RTE_ALIGN(txq_data->inlen_send +
sizeof(uint32_t),
MLX5_WSEG_SIZE));
wqe_size = RTE_ALIGN(wqe_size, MLX5_WQE_SIZE) / MLX5_WQE_SIZE;
/* Create Send Queue object with DevX. */
wqe_n = RTE_MIN((1UL << txq_data->elts_n) * wqe_size,
(uint32_t)priv->sh->device_attr.max_qp_wr);
log_desc_n = log2above(wqe_n);
ret = mlx5_txq_create_devx_sq_resources(dev, idx, log_desc_n);
if (ret) {
DRV_LOG(ERR, "Port %u Tx queue %u SQ creation failure.",
dev->data->port_id, idx);
rte_errno = errno;
goto error;
}
/* Create the Work Queue. */
txq_data->wqe_n = log_desc_n;
txq_data->wqe_s = 1 << txq_data->wqe_n;
txq_data->wqe_m = txq_data->wqe_s - 1;
txq_data->wqes = (struct mlx5_wqe *)(uintptr_t)txq_obj->sq_obj.wqes;
txq_data->wqes_end = txq_data->wqes + txq_data->wqe_s;
txq_data->wqe_ci = 0;
txq_data->wqe_pi = 0;
txq_data->wqe_comp = 0;
txq_data->wqe_thres = txq_data->wqe_s / MLX5_TX_COMP_THRESH_INLINE_DIV;
txq_data->qp_db = txq_obj->sq_obj.db_rec;
*txq_data->qp_db = 0;
txq_data->qp_num_8s = txq_obj->sq_obj.sq->id << 8;
/* Change Send Queue state to Ready-to-Send. */
ret = mlx5_devx_modify_sq(txq_obj, MLX5_TXQ_MOD_RST2RDY, 0);
if (ret) {
rte_errno = errno;
DRV_LOG(ERR,
"Port %u Tx queue %u SQ state to SQC_STATE_RDY failed.",
dev->data->port_id, idx);
goto error;
}
#ifdef HAVE_IBV_FLOW_DV_SUPPORT
/*
* If using DevX need to query and store TIS transport domain value.
* This is done once per port.
* Will use this value on Rx, when creating matching TIR.
*/
if (!priv->sh->tdn)
priv->sh->tdn = priv->sh->td->id;
#endif
MLX5_ASSERT(sh->tx_uar);
reg_addr = mlx5_os_get_devx_uar_reg_addr(sh->tx_uar);
MLX5_ASSERT(reg_addr);
txq_ctrl->bf_reg = reg_addr;
txq_ctrl->uar_mmap_offset =
mlx5_os_get_devx_uar_mmap_offset(sh->tx_uar);
txq_uar_init(txq_ctrl);
dev->data->tx_queue_state[idx] = RTE_ETH_QUEUE_STATE_STARTED;
return 0;
error:
ret = rte_errno; /* Save rte_errno before cleanup. */
mlx5_txq_release_devx_resources(txq_obj);
rte_errno = ret; /* Restore rte_errno. */
return -rte_errno;
#endif
}
/**
* Release an Tx DevX queue object.
*
* @param txq_obj
* DevX Tx queue object.
*/
void
mlx5_txq_devx_obj_release(struct mlx5_txq_obj *txq_obj)
{
MLX5_ASSERT(txq_obj);
if (txq_obj->txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN) {
if (txq_obj->tis)
claim_zero(mlx5_devx_cmd_destroy(txq_obj->tis));
#if defined(HAVE_MLX5DV_DEVX_UAR_OFFSET) || !defined(HAVE_INFINIBAND_VERBS_H)
} else {
mlx5_txq_release_devx_resources(txq_obj);
#endif
}
}
struct mlx5_obj_ops devx_obj_ops = {
.rxq_obj_modify_vlan_strip = mlx5_rxq_obj_modify_rq_vlan_strip,
.rxq_obj_new = mlx5_rxq_devx_obj_new,
.rxq_event_get = mlx5_rx_devx_get_event,
.rxq_obj_modify = mlx5_devx_modify_rq,
.rxq_obj_release = mlx5_rxq_devx_obj_release,
.ind_table_new = mlx5_devx_ind_table_new,
.ind_table_modify = mlx5_devx_ind_table_modify,
.ind_table_destroy = mlx5_devx_ind_table_destroy,
.hrxq_new = mlx5_devx_hrxq_new,
.hrxq_destroy = mlx5_devx_tir_destroy,
.hrxq_modify = mlx5_devx_hrxq_modify,
.drop_action_create = mlx5_devx_drop_action_create,
.drop_action_destroy = mlx5_devx_drop_action_destroy,
.txq_obj_new = mlx5_txq_devx_obj_new,
.txq_obj_modify = mlx5_devx_modify_sq,
.txq_obj_release = mlx5_txq_devx_obj_release,
};