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verbs.c
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verbs.c
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// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
/*
* Copyright 2019-2020 Amazon.com, Inc. or its affiliates. All rights reserved.
*/
#include <assert.h>
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <unistd.h>
#include <ccan/minmax.h>
#include <util/compiler.h>
#include <util/mmio.h>
#include <util/util.h>
#include "efa.h"
#include "efadv.h"
#include "verbs.h"
static bool is_buf_cleared(void *buf, size_t len)
{
int i;
for (i = 0; i < len; i++) {
if (((uint8_t *)buf)[i])
return false;
}
return true;
}
#define is_ext_cleared(ptr, inlen) \
is_buf_cleared(ptr + sizeof(*ptr), inlen - sizeof(*ptr))
#define is_reserved_cleared(reserved) is_buf_cleared(reserved, sizeof(reserved))
struct efa_wq_init_attr {
uint64_t db_mmap_key;
uint32_t db_off;
int cmd_fd;
int pgsz;
uint16_t sub_cq_idx;
};
int efa_query_device(struct ibv_context *ibvctx,
struct ibv_device_attr *dev_attr)
{
struct efa_context *ctx = to_efa_context(ibvctx);
struct ibv_query_device cmd;
uint8_t fw_ver[8];
int err;
err = ibv_cmd_query_device(ibvctx, dev_attr, (uint64_t *)&fw_ver,
&cmd, sizeof(cmd));
if (err)
return err;
dev_attr->max_qp_wr = min_t(int, dev_attr->max_qp_wr,
ctx->max_llq_size / sizeof(struct efa_io_tx_wqe));
snprintf(dev_attr->fw_ver, sizeof(dev_attr->fw_ver), "%u.%u.%u.%u",
fw_ver[0], fw_ver[1], fw_ver[2], fw_ver[3]);
return 0;
}
int efa_query_port(struct ibv_context *ibvctx, uint8_t port,
struct ibv_port_attr *port_attr)
{
struct ibv_query_port cmd;
return ibv_cmd_query_port(ibvctx, port, port_attr, &cmd, sizeof(cmd));
}
int efa_query_device_ex(struct ibv_context *context,
const struct ibv_query_device_ex_input *input,
struct ibv_device_attr_ex *attr,
size_t attr_size)
{
struct efa_context *ctx = to_efa_context(context);
int cmd_supp_uhw = ctx->cmds_supp_udata_mask &
EFA_USER_CMDS_SUPP_UDATA_QUERY_DEVICE;
struct ibv_device_attr *a = &attr->orig_attr;
struct efa_query_device_ex_resp resp = {};
struct ibv_query_device_ex cmd = {};
uint8_t fw_ver[8];
int err;
err = ibv_cmd_query_device_ex(
context, input, attr, attr_size, (uint64_t *)&fw_ver, &cmd,
sizeof(cmd), &resp.ibv_resp,
cmd_supp_uhw ? sizeof(resp) : sizeof(resp.ibv_resp));
if (err)
return err;
ctx->device_caps = resp.device_caps;
ctx->max_sq_wr = resp.max_sq_wr;
ctx->max_rq_wr = resp.max_rq_wr;
ctx->max_sq_sge = resp.max_sq_sge;
ctx->max_rq_sge = resp.max_rq_sge;
ctx->max_rdma_size = resp.max_rdma_size;
ctx->max_wr_rdma_sge = a->max_sge_rd;
a->max_qp_wr = min_t(int, a->max_qp_wr,
ctx->max_llq_size / sizeof(struct efa_io_tx_wqe));
snprintf(a->fw_ver, sizeof(a->fw_ver), "%u.%u.%u.%u",
fw_ver[0], fw_ver[1], fw_ver[2], fw_ver[3]);
return 0;
}
int efadv_query_device(struct ibv_context *ibvctx,
struct efadv_device_attr *attr,
uint32_t inlen)
{
struct efa_context *ctx = to_efa_context(ibvctx);
uint64_t comp_mask_out = 0;
if (!is_efa_dev(ibvctx->device))
return EOPNOTSUPP;
if (!vext_field_avail(typeof(*attr), inline_buf_size, inlen))
return EINVAL;
memset(attr, 0, inlen);
attr->max_sq_wr = ctx->max_sq_wr;
attr->max_rq_wr = ctx->max_rq_wr;
attr->max_sq_sge = ctx->max_sq_sge;
attr->max_rq_sge = ctx->max_rq_sge;
attr->inline_buf_size = ctx->inline_buf_size;
if (vext_field_avail(typeof(*attr), max_rdma_size, inlen)) {
attr->max_rdma_size = ctx->max_rdma_size;
if (is_rdma_read_cap(ctx))
attr->device_caps |= EFADV_DEVICE_ATTR_CAPS_RDMA_READ;
}
attr->comp_mask = comp_mask_out;
return 0;
}
struct ibv_pd *efa_alloc_pd(struct ibv_context *ibvctx)
{
struct efa_alloc_pd_resp resp = {};
struct ibv_alloc_pd cmd;
struct efa_pd *pd;
int err;
pd = calloc(1, sizeof(*pd));
if (!pd)
return NULL;
err = ibv_cmd_alloc_pd(ibvctx, &pd->ibvpd, &cmd, sizeof(cmd),
&resp.ibv_resp, sizeof(resp));
if (err)
goto out;
pd->pdn = resp.pdn;
return &pd->ibvpd;
out:
free(pd);
errno = err;
return NULL;
}
int efa_dealloc_pd(struct ibv_pd *ibvpd)
{
struct efa_pd *pd = to_efa_pd(ibvpd);
int err;
err = ibv_cmd_dealloc_pd(ibvpd);
if (err)
return err;
free(pd);
return 0;
}
struct ibv_mr *efa_reg_mr(struct ibv_pd *ibvpd, void *sva, size_t len,
uint64_t hca_va, int access)
{
struct ib_uverbs_reg_mr_resp resp;
struct ibv_reg_mr cmd;
struct efa_mr *mr;
int err;
mr = calloc(1, sizeof(*mr));
if (!mr)
return NULL;
err = ibv_cmd_reg_mr(ibvpd, sva, len, hca_va, access, &mr->vmr,
&cmd, sizeof(cmd), &resp, sizeof(resp));
if (err) {
free(mr);
errno = err;
return NULL;
}
return &mr->vmr.ibv_mr;
}
int efa_dereg_mr(struct verbs_mr *vmr)
{
struct efa_mr *mr = container_of(vmr, struct efa_mr, vmr);
int err;
err = ibv_cmd_dereg_mr(vmr);
if (err)
return err;
free(mr);
return 0;
}
static uint32_t efa_sub_cq_get_current_index(struct efa_sub_cq *sub_cq)
{
return sub_cq->consumed_cnt & sub_cq->qmask;
}
static int efa_cqe_is_pending(struct efa_io_cdesc_common *cqe_common,
int phase)
{
return EFA_GET(&cqe_common->flags, EFA_IO_CDESC_COMMON_PHASE) == phase;
}
static struct efa_io_cdesc_common *
efa_sub_cq_get_cqe(struct efa_sub_cq *sub_cq, int entry)
{
return (struct efa_io_cdesc_common *)(sub_cq->buf +
(entry * sub_cq->cqe_size));
}
static void efa_sub_cq_initialize(struct efa_sub_cq *sub_cq, uint8_t *buf,
int sub_cq_size, int cqe_size)
{
sub_cq->consumed_cnt = 0;
sub_cq->phase = 1;
sub_cq->buf = buf;
sub_cq->qmask = sub_cq_size - 1;
sub_cq->cqe_size = cqe_size;
sub_cq->ref_cnt = 0;
}
struct ibv_cq *efa_create_cq(struct ibv_context *ibvctx, int ncqe,
struct ibv_comp_channel *channel, int vec)
{
struct efa_context *ctx = to_efa_context(ibvctx);
struct efa_create_cq_resp resp = {};
struct efa_create_cq cmd = {};
uint16_t num_sub_cqs;
struct efa_cq *cq;
int sub_buf_size;
int sub_cq_size;
uint8_t *buf;
int err;
int i;
cq = calloc(1, sizeof(*cq) +
sizeof(*cq->sub_cq_arr) * ctx->sub_cqs_per_cq);
if (!cq)
return NULL;
num_sub_cqs = ctx->sub_cqs_per_cq;
cmd.num_sub_cqs = num_sub_cqs;
cmd.cq_entry_size = ctx->cqe_size;
ncqe = roundup_pow_of_two(ncqe);
err = ibv_cmd_create_cq(ibvctx, ncqe, channel, vec,
&cq->ibvcq, &cmd.ibv_cmd, sizeof(cmd),
&resp.ibv_resp, sizeof(resp));
if (err) {
errno = err;
goto err_free_cq;
}
sub_cq_size = cq->ibvcq.cqe;
cq->cqn = resp.cq_idx;
cq->buf_size = resp.q_mmap_size;
cq->num_sub_cqs = num_sub_cqs;
cq->cqe_size = ctx->cqe_size;
cq->buf = mmap(NULL, cq->buf_size, PROT_READ, MAP_SHARED,
ibvctx->cmd_fd, resp.q_mmap_key);
if (cq->buf == MAP_FAILED)
goto err_destroy_cq;
buf = cq->buf;
sub_buf_size = cq->cqe_size * sub_cq_size;
for (i = 0; i < num_sub_cqs; i++) {
efa_sub_cq_initialize(&cq->sub_cq_arr[i], buf, sub_cq_size,
cq->cqe_size);
buf += sub_buf_size;
}
pthread_spin_init(&cq->lock, PTHREAD_PROCESS_PRIVATE);
return &cq->ibvcq;
err_destroy_cq:
ibv_cmd_destroy_cq(&cq->ibvcq);
err_free_cq:
free(cq);
return NULL;
}
int efa_destroy_cq(struct ibv_cq *ibvcq)
{
struct efa_cq *cq = to_efa_cq(ibvcq);
int err;
munmap(cq->buf, cq->buf_size);
pthread_spin_destroy(&cq->lock);
err = ibv_cmd_destroy_cq(ibvcq);
if (err)
return err;
free(cq);
return 0;
}
static struct efa_io_cdesc_common *
cq_next_sub_cqe_get(struct efa_sub_cq *sub_cq)
{
struct efa_io_cdesc_common *cqe;
uint32_t current_index;
current_index = efa_sub_cq_get_current_index(sub_cq);
cqe = efa_sub_cq_get_cqe(sub_cq, current_index);
if (efa_cqe_is_pending(cqe, sub_cq->phase)) {
/* Do not read the rest of the completion entry before the
* phase bit has been validated.
*/
udma_from_device_barrier();
sub_cq->consumed_cnt++;
if (!efa_sub_cq_get_current_index(sub_cq))
sub_cq->phase = 1 - sub_cq->phase;
return cqe;
}
return NULL;
}
static enum ibv_wc_status to_ibv_status(enum efa_io_comp_status status)
{
switch (status) {
case EFA_IO_COMP_STATUS_OK:
return IBV_WC_SUCCESS;
case EFA_IO_COMP_STATUS_FLUSHED:
return IBV_WC_WR_FLUSH_ERR;
case EFA_IO_COMP_STATUS_LOCAL_ERROR_QP_INTERNAL_ERROR:
case EFA_IO_COMP_STATUS_LOCAL_ERROR_INVALID_OP_TYPE:
case EFA_IO_COMP_STATUS_LOCAL_ERROR_INVALID_AH:
return IBV_WC_LOC_QP_OP_ERR;
case EFA_IO_COMP_STATUS_LOCAL_ERROR_INVALID_LKEY:
return IBV_WC_LOC_PROT_ERR;
case EFA_IO_COMP_STATUS_LOCAL_ERROR_BAD_LENGTH:
return IBV_WC_LOC_LEN_ERR;
case EFA_IO_COMP_STATUS_REMOTE_ERROR_ABORT:
return IBV_WC_REM_ABORT_ERR;
case EFA_IO_COMP_STATUS_REMOTE_ERROR_RNR:
return IBV_WC_RNR_RETRY_EXC_ERR;
case EFA_IO_COMP_STATUS_REMOTE_ERROR_BAD_DEST_QPN:
return IBV_WC_REM_INV_RD_REQ_ERR;
case EFA_IO_COMP_STATUS_REMOTE_ERROR_BAD_STATUS:
return IBV_WC_BAD_RESP_ERR;
case EFA_IO_COMP_STATUS_REMOTE_ERROR_BAD_LENGTH:
return IBV_WC_REM_INV_REQ_ERR;
case EFA_IO_COMP_STATUS_REMOTE_ERROR_BAD_ADDRESS:
default:
return IBV_WC_GENERAL_ERR;
}
}
static int efa_poll_sub_cq(struct efa_cq *cq, struct efa_sub_cq *sub_cq,
struct efa_qp **cur_qp, struct ibv_wc *wc)
{
struct efa_context *ctx = to_efa_context(cq->ibvcq.context);
struct efa_io_cdesc_common *cqe;
uint32_t qpn, wrid_idx;
struct efa_wq *wq;
cqe = cq_next_sub_cqe_get(sub_cq);
if (!cqe)
return ENOMEM;
qpn = cqe->qp_num;
if (!*cur_qp || qpn != (*cur_qp)->verbs_qp.qp.qp_num) {
/* We do not have to take the QP table lock here,
* because CQs will be locked while QPs are removed
* from the table.
*/
*cur_qp = ctx->qp_table[qpn & ctx->qp_table_sz_m1];
if (!*cur_qp)
return EINVAL;
}
wrid_idx = cqe->req_id;
wc->status = to_ibv_status(cqe->status);
wc->vendor_err = cqe->status;
wc->wc_flags = 0;
wc->qp_num = qpn;
if (EFA_GET(&cqe->flags, EFA_IO_CDESC_COMMON_Q_TYPE) ==
EFA_IO_SEND_QUEUE) {
wq = &(*cur_qp)->sq.wq;
wc->opcode = IBV_WC_SEND;
} else {
struct efa_io_rx_cdesc *rcqe =
container_of(cqe, struct efa_io_rx_cdesc, common);
wq = &(*cur_qp)->rq.wq;
wc->byte_len = cqe->length;
wc->opcode = IBV_WC_RECV;
wc->src_qp = rcqe->src_qp_num;
wc->sl = 0;
wc->slid = rcqe->ah;
if (EFA_GET(&cqe->flags, EFA_IO_CDESC_COMMON_HAS_IMM)) {
wc->imm_data = htobe32(rcqe->imm);
wc->wc_flags |= IBV_WC_WITH_IMM;
}
}
pthread_spin_lock(&wq->wqlock);
wq->wrid_idx_pool_next--;
wq->wrid_idx_pool[wq->wrid_idx_pool_next] = wrid_idx;
wc->wr_id = wq->wrid[wrid_idx];
wq->wqe_completed++;
pthread_spin_unlock(&wq->wqlock);
return 0;
}
static int efa_poll_sub_cqs(struct efa_cq *cq, struct ibv_wc *wc)
{
uint16_t num_sub_cqs = cq->num_sub_cqs;
struct efa_sub_cq *sub_cq;
struct efa_qp *qp = NULL;
uint16_t sub_cq_idx;
int err = ENOMEM;
for (sub_cq_idx = 0; sub_cq_idx < num_sub_cqs; sub_cq_idx++) {
sub_cq = &cq->sub_cq_arr[cq->next_poll_idx++];
cq->next_poll_idx %= num_sub_cqs;
if (!sub_cq->ref_cnt)
continue;
err = efa_poll_sub_cq(cq, sub_cq, &qp, wc);
if (err != ENOMEM)
break;
}
return err;
}
int efa_poll_cq(struct ibv_cq *ibvcq, int nwc, struct ibv_wc *wc)
{
struct efa_cq *cq = to_efa_cq(ibvcq);
int ret = 0;
int i;
pthread_spin_lock(&cq->lock);
for (i = 0; i < nwc; i++) {
ret = efa_poll_sub_cqs(cq, &wc[i]);
if (ret) {
if (ret == ENOMEM)
ret = 0;
break;
}
}
pthread_spin_unlock(&cq->lock);
return i ?: -ret;
}
static void efa_cq_inc_ref_cnt(struct efa_cq *cq, uint8_t sub_cq_idx)
{
cq->sub_cq_arr[sub_cq_idx].ref_cnt++;
}
static void efa_cq_dec_ref_cnt(struct efa_cq *cq, uint8_t sub_cq_idx)
{
cq->sub_cq_arr[sub_cq_idx].ref_cnt--;
}
static void efa_wq_terminate(struct efa_wq *wq, int pgsz)
{
void *db_aligned;
pthread_spin_destroy(&wq->wqlock);
db_aligned = (void *)((uintptr_t)wq->db & ~(pgsz - 1));
munmap(db_aligned, pgsz);
free(wq->wrid_idx_pool);
free(wq->wrid);
}
static int efa_wq_initialize(struct efa_wq *wq, struct efa_wq_init_attr *attr)
{
uint8_t *db_base;
int err;
int i;
wq->wrid = malloc(wq->wqe_cnt * sizeof(*wq->wrid));
if (!wq->wrid)
return ENOMEM;
wq->wrid_idx_pool = malloc(wq->wqe_cnt * sizeof(uint32_t));
if (!wq->wrid_idx_pool) {
err = ENOMEM;
goto err_free_wrid;
}
db_base = mmap(NULL, attr->pgsz, PROT_WRITE, MAP_SHARED, attr->cmd_fd,
attr->db_mmap_key);
if (db_base == MAP_FAILED) {
err = errno;
goto err_free_wrid_idx_pool;
}
wq->db = (uint32_t *)(db_base + attr->db_off);
/* Initialize the wrid free indexes pool. */
for (i = 0; i < wq->wqe_cnt; i++)
wq->wrid_idx_pool[i] = i;
pthread_spin_init(&wq->wqlock, PTHREAD_PROCESS_PRIVATE);
wq->sub_cq_idx = attr->sub_cq_idx;
return 0;
err_free_wrid_idx_pool:
free(wq->wrid_idx_pool);
err_free_wrid:
free(wq->wrid);
return err;
}
static void efa_sq_terminate(struct efa_qp *qp)
{
struct efa_sq *sq = &qp->sq;
if (!sq->wq.wqe_cnt)
return;
munmap(sq->desc - sq->desc_offset, sq->desc_ring_mmap_size);
free(sq->local_queue);
efa_wq_terminate(&sq->wq, qp->page_size);
}
static int efa_sq_initialize(struct efa_qp *qp,
const struct ibv_qp_init_attr_ex *attr,
struct efa_create_qp_resp *resp)
{
struct efa_context *ctx = to_efa_context(qp->verbs_qp.qp.context);
struct efa_wq_init_attr wq_attr;
struct efa_sq *sq = &qp->sq;
size_t desc_ring_size;
int err;
if (!sq->wq.wqe_cnt)
return 0;
wq_attr = (struct efa_wq_init_attr) {
.db_mmap_key = resp->sq_db_mmap_key,
.db_off = resp->sq_db_offset,
.cmd_fd = qp->verbs_qp.qp.context->cmd_fd,
.pgsz = qp->page_size,
.sub_cq_idx = resp->send_sub_cq_idx,
};
err = efa_wq_initialize(&qp->sq.wq, &wq_attr);
if (err)
return err;
sq->desc_offset = resp->llq_desc_offset;
desc_ring_size = sq->wq.wqe_cnt * sizeof(struct efa_io_tx_wqe);
sq->desc_ring_mmap_size = align(desc_ring_size + sq->desc_offset,
qp->page_size);
sq->max_inline_data = attr->cap.max_inline_data;
sq->local_queue = malloc(desc_ring_size);
if (!sq->local_queue) {
err = ENOMEM;
goto err_terminate_wq;
}
sq->desc = mmap(NULL, sq->desc_ring_mmap_size, PROT_WRITE,
MAP_SHARED, qp->verbs_qp.qp.context->cmd_fd,
resp->llq_desc_mmap_key);
if (sq->desc == MAP_FAILED) {
err = errno;
goto err_free_local_queue;
}
sq->desc += sq->desc_offset;
sq->max_wr_rdma_sge = min_t(uint16_t, ctx->max_wr_rdma_sge,
EFA_IO_TX_DESC_NUM_RDMA_BUFS);
return 0;
err_free_local_queue:
free(sq->local_queue);
err_terminate_wq:
efa_wq_terminate(&sq->wq, qp->page_size);
return err;
}
static void efa_rq_terminate(struct efa_qp *qp)
{
struct efa_rq *rq = &qp->rq;
if (!rq->wq.wqe_cnt)
return;
munmap(rq->buf, rq->buf_size);
efa_wq_terminate(&rq->wq, qp->page_size);
}
static int efa_rq_initialize(struct efa_qp *qp, struct efa_create_qp_resp *resp)
{
struct efa_wq_init_attr wq_attr;
struct efa_rq *rq = &qp->rq;
int err;
if (!rq->wq.wqe_cnt)
return 0;
wq_attr = (struct efa_wq_init_attr) {
.db_mmap_key = resp->rq_db_mmap_key,
.db_off = resp->rq_db_offset,
.cmd_fd = qp->verbs_qp.qp.context->cmd_fd,
.pgsz = qp->page_size,
.sub_cq_idx = resp->recv_sub_cq_idx,
};
err = efa_wq_initialize(&qp->rq.wq, &wq_attr);
if (err)
return err;
rq->buf_size = resp->rq_mmap_size;
rq->buf = mmap(NULL, rq->buf_size, PROT_WRITE, MAP_SHARED,
qp->verbs_qp.qp.context->cmd_fd, resp->rq_mmap_key);
if (rq->buf == MAP_FAILED) {
err = errno;
goto err_terminate_wq;
}
return 0;
err_terminate_wq:
efa_wq_terminate(&rq->wq, qp->page_size);
return err;
}
static void efa_qp_init_indices(struct efa_qp *qp)
{
qp->sq.wq.wqe_posted = 0;
qp->sq.wq.wqe_completed = 0;
qp->sq.wq.pc = 0;
qp->sq.wq.wrid_idx_pool_next = 0;
qp->rq.wq.wqe_posted = 0;
qp->rq.wq.wqe_completed = 0;
qp->rq.wq.pc = 0;
qp->rq.wq.wrid_idx_pool_next = 0;
}
static void efa_setup_qp(struct efa_qp *qp,
struct ibv_qp_cap *cap,
size_t page_size)
{
uint16_t rq_desc_cnt;
efa_qp_init_indices(qp);
qp->sq.wq.wqe_cnt = roundup_pow_of_two(cap->max_send_wr);
qp->sq.wq.max_sge = cap->max_send_sge;
qp->sq.wq.desc_mask = qp->sq.wq.wqe_cnt - 1;
qp->rq.wq.max_sge = cap->max_recv_sge;
rq_desc_cnt = roundup_pow_of_two(cap->max_recv_sge * cap->max_recv_wr);
qp->rq.wq.desc_mask = rq_desc_cnt - 1;
qp->rq.wq.wqe_cnt = rq_desc_cnt / qp->rq.wq.max_sge;
qp->page_size = page_size;
}
static void efa_lock_cqs(struct ibv_qp *ibvqp)
{
struct efa_cq *send_cq = to_efa_cq(ibvqp->send_cq);
struct efa_cq *recv_cq = to_efa_cq(ibvqp->recv_cq);
if (recv_cq == send_cq && recv_cq) {
pthread_spin_lock(&recv_cq->lock);
} else {
if (recv_cq)
pthread_spin_lock(&recv_cq->lock);
if (send_cq)
pthread_spin_lock(&send_cq->lock);
}
}
static void efa_unlock_cqs(struct ibv_qp *ibvqp)
{
struct efa_cq *send_cq = to_efa_cq(ibvqp->send_cq);
struct efa_cq *recv_cq = to_efa_cq(ibvqp->recv_cq);
if (recv_cq == send_cq && recv_cq) {
pthread_spin_unlock(&recv_cq->lock);
} else {
if (recv_cq)
pthread_spin_unlock(&recv_cq->lock);
if (send_cq)
pthread_spin_unlock(&send_cq->lock);
}
}
static void efa_qp_fill_wr_pfns(struct ibv_qp_ex *ibvqpx,
struct ibv_qp_init_attr_ex *attr_ex);
static int efa_check_qp_attr(struct efa_context *ctx,
struct ibv_qp_init_attr_ex *attr,
struct efadv_qp_init_attr *efa_attr)
{
uint64_t supp_send_ops_mask;
uint64_t supp_ud_send_ops_mask = IBV_QP_EX_WITH_SEND |
IBV_QP_EX_WITH_SEND_WITH_IMM;
uint64_t supp_srd_send_ops_mask =
IBV_QP_EX_WITH_SEND | IBV_QP_EX_WITH_SEND_WITH_IMM |
(is_rdma_read_cap(ctx) ? IBV_QP_EX_WITH_RDMA_READ : 0);
#define EFA_CREATE_QP_SUPP_ATTR_MASK \
(IBV_QP_INIT_ATTR_PD | IBV_QP_INIT_ATTR_SEND_OPS_FLAGS)
if (attr->qp_type == IBV_QPT_DRIVER &&
efa_attr->driver_qp_type != EFADV_QP_DRIVER_TYPE_SRD)
return EOPNOTSUPP;
if (!check_comp_mask(attr->comp_mask, EFA_CREATE_QP_SUPP_ATTR_MASK))
return EOPNOTSUPP;
if (!(attr->comp_mask & IBV_QP_INIT_ATTR_PD))
return EINVAL;
if (attr->comp_mask & IBV_QP_INIT_ATTR_SEND_OPS_FLAGS) {
switch (attr->qp_type) {
case IBV_QPT_UD:
supp_send_ops_mask = supp_ud_send_ops_mask;
break;
case IBV_QPT_DRIVER:
supp_send_ops_mask = supp_srd_send_ops_mask;
break;
default:
return EOPNOTSUPP;
}
if (!check_comp_mask(attr->send_ops_flags, supp_send_ops_mask))
return EOPNOTSUPP;
}
if (!attr->recv_cq || !attr->send_cq)
return EINVAL;
if (attr->srq)
return EINVAL;
return 0;
}
static int efa_check_qp_limits(struct efa_context *ctx,
struct ibv_qp_init_attr_ex *attr)
{
if (attr->cap.max_send_sge > ctx->max_sq_sge)
return EINVAL;
if (attr->cap.max_recv_sge > ctx->max_rq_sge)
return EINVAL;
if (attr->cap.max_send_wr > ctx->max_sq_wr)
return EINVAL;
if (attr->cap.max_recv_wr > ctx->max_rq_wr)
return EINVAL;
return 0;
}
static struct ibv_qp *create_qp(struct ibv_context *ibvctx,
struct ibv_qp_init_attr_ex *attr,
struct efadv_qp_init_attr *efa_attr)
{
struct efa_context *ctx = to_efa_context(ibvctx);
struct efa_dev *dev = to_efa_dev(ibvctx->device);
struct efa_create_qp_resp resp = {};
struct efa_create_qp req = {};
struct efa_cq *send_cq;
struct efa_cq *recv_cq;
struct ibv_qp *ibvqp;
struct efa_qp *qp;
int err;
err = efa_check_qp_attr(ctx, attr, efa_attr);
if (err)
goto err_out;
err = efa_check_qp_limits(ctx, attr);
if (err)
goto err_out;
qp = calloc(1, sizeof(*qp));
if (!qp) {
err = ENOMEM;
goto err_out;
}
efa_setup_qp(qp, &attr->cap, dev->pg_sz);
attr->cap.max_send_wr = qp->sq.wq.wqe_cnt;
attr->cap.max_recv_wr = qp->rq.wq.wqe_cnt;
req.rq_ring_size = (qp->rq.wq.desc_mask + 1) *
sizeof(struct efa_io_rx_desc);
req.sq_ring_size = (attr->cap.max_send_wr) *
sizeof(struct efa_io_tx_wqe);
if (attr->qp_type == IBV_QPT_DRIVER)
req.driver_qp_type = efa_attr->driver_qp_type;
err = ibv_cmd_create_qp_ex(ibvctx, &qp->verbs_qp,
attr, &req.ibv_cmd, sizeof(req),
&resp.ibv_resp, sizeof(resp));
if (err)
goto err_free_qp;
ibvqp = &qp->verbs_qp.qp;
ibvqp->state = IBV_QPS_RESET;
qp->sq_sig_all = attr->sq_sig_all;
err = efa_rq_initialize(qp, &resp);
if (err)
goto err_destroy_qp;
err = efa_sq_initialize(qp, attr, &resp);
if (err)
goto err_terminate_rq;
pthread_spin_lock(&ctx->qp_table_lock);
ctx->qp_table[ibvqp->qp_num & ctx->qp_table_sz_m1] = qp;
pthread_spin_unlock(&ctx->qp_table_lock);
if (attr->send_cq) {
send_cq = to_efa_cq(attr->send_cq);
qp->scq = send_cq;
pthread_spin_lock(&send_cq->lock);
efa_cq_inc_ref_cnt(send_cq, resp.send_sub_cq_idx);
pthread_spin_unlock(&send_cq->lock);
}
if (attr->recv_cq) {
recv_cq = to_efa_cq(attr->recv_cq);
qp->rcq = recv_cq;
pthread_spin_lock(&recv_cq->lock);
efa_cq_inc_ref_cnt(recv_cq, resp.recv_sub_cq_idx);
pthread_spin_unlock(&recv_cq->lock);
}
if (attr->comp_mask & IBV_QP_INIT_ATTR_SEND_OPS_FLAGS) {
efa_qp_fill_wr_pfns(&qp->verbs_qp.qp_ex, attr);
qp->verbs_qp.comp_mask |= VERBS_QP_EX;
}
return ibvqp;
err_terminate_rq:
efa_rq_terminate(qp);
err_destroy_qp:
ibv_cmd_destroy_qp(ibvqp);
err_free_qp:
free(qp);
err_out:
errno = err;
return NULL;
}
struct ibv_qp *efa_create_qp(struct ibv_pd *ibvpd,
struct ibv_qp_init_attr *attr)
{
struct ibv_qp_init_attr_ex attr_ex = {};
struct ibv_qp *ibvqp;
if (attr->qp_type != IBV_QPT_UD) {
errno = EOPNOTSUPP;
return NULL;
}
memcpy(&attr_ex, attr, sizeof(*attr));
attr_ex.comp_mask = IBV_QP_INIT_ATTR_PD;
attr_ex.pd = ibvpd;
ibvqp = create_qp(ibvpd->context, &attr_ex, NULL);
if (ibvqp)
memcpy(attr, &attr_ex, sizeof(*attr));
return ibvqp;
}
struct ibv_qp *efa_create_qp_ex(struct ibv_context *ibvctx,
struct ibv_qp_init_attr_ex *attr_ex)
{
if (attr_ex->qp_type != IBV_QPT_UD) {
errno = EOPNOTSUPP;
return NULL;
}
return create_qp(ibvctx, attr_ex, NULL);
}
struct ibv_qp *efadv_create_driver_qp(struct ibv_pd *ibvpd,
struct ibv_qp_init_attr *attr,
uint32_t driver_qp_type)
{
struct ibv_qp_init_attr_ex attr_ex = {};
struct efadv_qp_init_attr efa_attr = {};
struct ibv_qp *ibvqp;
if (!is_efa_dev(ibvpd->context->device)) {
errno = EOPNOTSUPP;
return NULL;
}
if (attr->qp_type != IBV_QPT_DRIVER) {
errno = EINVAL;
return NULL;
}
memcpy(&attr_ex, attr, sizeof(*attr));
attr_ex.comp_mask = IBV_QP_INIT_ATTR_PD;
attr_ex.pd = ibvpd;
efa_attr.driver_qp_type = driver_qp_type;
ibvqp = create_qp(ibvpd->context, &attr_ex, &efa_attr);
if (ibvqp)
memcpy(attr, &attr_ex, sizeof(*attr));
return ibvqp;
}
struct ibv_qp *efadv_create_qp_ex(struct ibv_context *ibvctx,
struct ibv_qp_init_attr_ex *attr_ex,
struct efadv_qp_init_attr *efa_attr,
uint32_t inlen)
{
if (!is_efa_dev(ibvctx->device)) {
errno = EOPNOTSUPP;
return NULL;
}
if (attr_ex->qp_type != IBV_QPT_DRIVER ||
!vext_field_avail(struct efadv_qp_init_attr,
driver_qp_type, inlen) ||
efa_attr->comp_mask ||
!is_reserved_cleared(efa_attr->reserved) ||
(inlen > sizeof(efa_attr) && !is_ext_cleared(efa_attr, inlen))) {
errno = EINVAL;
return NULL;
}
return create_qp(ibvctx, attr_ex, efa_attr);
}
int efa_modify_qp(struct ibv_qp *ibvqp, struct ibv_qp_attr *attr,
int attr_mask)
{
struct efa_qp *qp = to_efa_qp(ibvqp);
struct ibv_modify_qp cmd = {};
int err;
err = ibv_cmd_modify_qp(ibvqp, attr, attr_mask, &cmd, sizeof(cmd));
if (err)
return err;
if (attr_mask & IBV_QP_STATE) {
qp->verbs_qp.qp.state = attr->qp_state;