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third-party-mirror / linux-rdma / rdma-core / refs/heads/stable-v39 / . / providers / mlx5 / cq.c
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/*
* Copyright (c) 2012 Mellanox Technologies, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <util/compiler.h>
#include <util/mmio.h>
#include <infiniband/opcode.h>
#include "mlx5.h"
#include "wqe.h"
enum {
CQ_OK = 0,
CQ_EMPTY = -1,
CQ_POLL_ERR = -2,
CQ_POLL_NODATA = ENOENT
};
enum {
MLX5_CQ_MODIFY_RESEIZE = 0,
MLX5_CQ_MODIFY_MODER = 1,
MLX5_CQ_MODIFY_MAPPING = 2,
};
struct mlx5_sigerr_cqe {
uint8_t rsvd0[16];
__be32 expected_trans_sig;
__be32 actual_trans_sig;
__be32 expected_ref_tag;
__be32 actual_ref_tag;
__be16 syndrome;
uint8_t sig_type;
uint8_t domain;
__be32 mkey;
__be64 sig_err_offset;
uint8_t rsvd30[14];
uint8_t signature;
uint8_t op_own;
};
enum {
MLX5_CQE_APP_TAG_MATCHING = 1,
};
enum {
MLX5_CQE_APP_OP_TM_CONSUMED = 0x1,
MLX5_CQE_APP_OP_TM_EXPECTED = 0x2,
MLX5_CQE_APP_OP_TM_UNEXPECTED = 0x3,
MLX5_CQE_APP_OP_TM_NO_TAG = 0x4,
MLX5_CQE_APP_OP_TM_APPEND = 0x5,
MLX5_CQE_APP_OP_TM_REMOVE = 0x6,
MLX5_CQE_APP_OP_TM_NOOP = 0x7,
MLX5_CQE_APP_OP_TM_CONSUMED_SW_RDNV = 0x9,
MLX5_CQE_APP_OP_TM_CONSUMED_MSG = 0xA,
MLX5_CQE_APP_OP_TM_CONSUMED_MSG_SW_RDNV = 0xB,
MLX5_CQE_APP_OP_TM_MSG_COMPLETION_CANCELED = 0xC,
};
/* When larger messages or rendezvous transfers are involved, matching and
* data transfer completion are distinct events that generate 2 completion
* events for the same recv_wr_id.
*/
static inline bool mlx5_cqe_app_op_tm_is_complete(int op)
{
return op != MLX5_CQE_APP_OP_TM_CONSUMED &&
op != MLX5_CQE_APP_OP_TM_CONSUMED_SW_RDNV;
}
enum {
MLX5_CQ_LAZY_FLAGS =
MLX5_CQ_FLAGS_RX_CSUM_VALID |
MLX5_CQ_FLAGS_TM_SYNC_REQ |
MLX5_CQ_FLAGS_RAW_WQE
};
int mlx5_stall_num_loop = 60;
int mlx5_stall_cq_poll_min = 60;
int mlx5_stall_cq_poll_max = 100000;
int mlx5_stall_cq_inc_step = 100;
int mlx5_stall_cq_dec_step = 10;
enum {
MLX5_TM_MAX_SYNC_DIFF = 0x3fff
};
static inline uint8_t get_cqe_l3_hdr_type(struct mlx5_cqe64 *cqe)
{
return (cqe->l4_hdr_type_etc >> 2) & 0x3;
}
static void *get_buf_cqe(struct mlx5_buf *buf, int n, int cqe_sz)
{
return buf->buf + n * cqe_sz;
}
static void *get_cqe(struct mlx5_cq *cq, int n)
{
return cq->active_buf->buf + n * cq->cqe_sz;
}
static void *get_sw_cqe(struct mlx5_cq *cq, int n)
{
void *cqe = get_cqe(cq, n & cq->verbs_cq.cq.cqe);
struct mlx5_cqe64 *cqe64;
cqe64 = (cq->cqe_sz == 64) ? cqe : cqe + 64;
if (likely(mlx5dv_get_cqe_opcode(cqe64) != MLX5_CQE_INVALID) &&
!((cqe64->op_own & MLX5_CQE_OWNER_MASK) ^ !!(n & (cq->verbs_cq.cq.cqe + 1)))) {
return cqe;
} else {
return NULL;
}
}
static void *next_cqe_sw(struct mlx5_cq *cq)
{
return get_sw_cqe(cq, cq->cons_index);
}
static void update_cons_index(struct mlx5_cq *cq)
{
cq->dbrec[MLX5_CQ_SET_CI] = htobe32(cq->cons_index & 0xffffff);
}
static inline void handle_good_req(struct ibv_wc *wc, struct mlx5_cqe64 *cqe, struct mlx5_wq *wq, int idx)
{
switch (be32toh(cqe->sop_drop_qpn) >> 24) {
case MLX5_OPCODE_RDMA_WRITE_IMM:
wc->wc_flags |= IBV_WC_WITH_IMM;
SWITCH_FALLTHROUGH;
case MLX5_OPCODE_RDMA_WRITE:
wc->opcode = IBV_WC_RDMA_WRITE;
break;
case MLX5_OPCODE_SEND_IMM:
wc->wc_flags |= IBV_WC_WITH_IMM;
SWITCH_FALLTHROUGH;
case MLX5_OPCODE_SEND:
case MLX5_OPCODE_SEND_INVAL:
wc->opcode = IBV_WC_SEND;
break;
case MLX5_OPCODE_RDMA_READ:
wc->opcode = IBV_WC_RDMA_READ;
wc->byte_len = be32toh(cqe->byte_cnt);
break;
case MLX5_OPCODE_ATOMIC_CS:
wc->opcode = IBV_WC_COMP_SWAP;
wc->byte_len = 8;
break;
case MLX5_OPCODE_ATOMIC_FA:
wc->opcode = IBV_WC_FETCH_ADD;
wc->byte_len = 8;
break;
case MLX5_OPCODE_UMR:
case MLX5_OPCODE_SET_PSV:
case MLX5_OPCODE_NOP:
case MLX5_OPCODE_MMO:
wc->opcode = wq->wr_data[idx];
break;
case MLX5_OPCODE_TSO:
wc->opcode = IBV_WC_TSO;
break;
}
if (unlikely(wq->wr_data[idx] == IBV_WC_DRIVER2)) /* raw WQE */
wc->opcode = IBV_WC_DRIVER2;
}
static inline int handle_responder_lazy(struct mlx5_cq *cq, struct mlx5_cqe64 *cqe,
struct mlx5_resource *cur_rsc, struct mlx5_srq *srq)
{
uint16_t wqe_ctr;
struct mlx5_wq *wq;
struct mlx5_qp *qp = rsc_to_mqp(cur_rsc);
int err = IBV_WC_SUCCESS;
if (srq) {
wqe_ctr = be16toh(cqe->wqe_counter);
cq->verbs_cq.cq_ex.wr_id = srq->wrid[wqe_ctr];
mlx5_free_srq_wqe(srq, wqe_ctr);
if (cqe->op_own & MLX5_INLINE_SCATTER_32)
err = mlx5_copy_to_recv_srq(srq, wqe_ctr, cqe,
be32toh(cqe->byte_cnt));
else if (cqe->op_own & MLX5_INLINE_SCATTER_64)
err = mlx5_copy_to_recv_srq(srq, wqe_ctr, cqe - 1,
be32toh(cqe->byte_cnt));
} else {
if (likely(cur_rsc->type == MLX5_RSC_TYPE_QP)) {
wq = &qp->rq;
if (qp->qp_cap_cache & MLX5_RX_CSUM_VALID)
cq->flags |= MLX5_CQ_FLAGS_RX_CSUM_VALID;
} else {
wq = &(rsc_to_mrwq(cur_rsc)->rq);
}
wqe_ctr = wq->tail & (wq->wqe_cnt - 1);
cq->verbs_cq.cq_ex.wr_id = wq->wrid[wqe_ctr];
++wq->tail;
if (cqe->op_own & MLX5_INLINE_SCATTER_32)
err = mlx5_copy_to_recv_wqe(qp, wqe_ctr, cqe,
be32toh(cqe->byte_cnt));
else if (cqe->op_own & MLX5_INLINE_SCATTER_64)
err = mlx5_copy_to_recv_wqe(qp, wqe_ctr, cqe - 1,
be32toh(cqe->byte_cnt));
}
return err;
}
/* Returns IBV_WC_IP_CSUM_OK or 0 */
static inline int get_csum_ok(struct mlx5_cqe64 *cqe)
{
return (((cqe->hds_ip_ext & (MLX5_CQE_L4_OK | MLX5_CQE_L3_OK)) ==
(MLX5_CQE_L4_OK | MLX5_CQE_L3_OK)) &
(get_cqe_l3_hdr_type(cqe) == MLX5_CQE_L3_HDR_TYPE_IPV4))
<< IBV_WC_IP_CSUM_OK_SHIFT;
}
static inline int handle_responder(struct ibv_wc *wc, struct mlx5_cqe64 *cqe,
struct mlx5_resource *cur_rsc, struct mlx5_srq *srq)
{
uint16_t wqe_ctr;
struct mlx5_wq *wq;
struct mlx5_qp *qp = rsc_to_mqp(cur_rsc);
uint8_t g;
int err = 0;
wc->byte_len = be32toh(cqe->byte_cnt);
if (srq) {
wqe_ctr = be16toh(cqe->wqe_counter);
wc->wr_id = srq->wrid[wqe_ctr];
mlx5_free_srq_wqe(srq, wqe_ctr);
if (cqe->op_own & MLX5_INLINE_SCATTER_32)
err = mlx5_copy_to_recv_srq(srq, wqe_ctr, cqe,
wc->byte_len);
else if (cqe->op_own & MLX5_INLINE_SCATTER_64)
err = mlx5_copy_to_recv_srq(srq, wqe_ctr, cqe - 1,
wc->byte_len);
} else {
if (likely(cur_rsc->type == MLX5_RSC_TYPE_QP)) {
wq = &qp->rq;
if (qp->qp_cap_cache & MLX5_RX_CSUM_VALID)
wc->wc_flags |= get_csum_ok(cqe);
} else {
wq = &(rsc_to_mrwq(cur_rsc)->rq);
}
wqe_ctr = wq->tail & (wq->wqe_cnt - 1);
wc->wr_id = wq->wrid[wqe_ctr];
++wq->tail;
if (cqe->op_own & MLX5_INLINE_SCATTER_32)
err = mlx5_copy_to_recv_wqe(qp, wqe_ctr, cqe,
wc->byte_len);
else if (cqe->op_own & MLX5_INLINE_SCATTER_64)
err = mlx5_copy_to_recv_wqe(qp, wqe_ctr, cqe - 1,
wc->byte_len);
}
if (err)
return err;
switch (cqe->op_own >> 4) {
case MLX5_CQE_RESP_WR_IMM:
wc->opcode = IBV_WC_RECV_RDMA_WITH_IMM;
wc->wc_flags |= IBV_WC_WITH_IMM;
wc->imm_data = cqe->imm_inval_pkey;
break;
case MLX5_CQE_RESP_SEND:
wc->opcode = IBV_WC_RECV;
break;
case MLX5_CQE_RESP_SEND_IMM:
wc->opcode = IBV_WC_RECV;
wc->wc_flags |= IBV_WC_WITH_IMM;
wc->imm_data = cqe->imm_inval_pkey;
break;
case MLX5_CQE_RESP_SEND_INV:
wc->opcode = IBV_WC_RECV;
wc->wc_flags |= IBV_WC_WITH_INV;
wc->invalidated_rkey = be32toh(cqe->imm_inval_pkey);
break;
}
wc->slid = be16toh(cqe->slid);
wc->sl = (be32toh(cqe->flags_rqpn) >> 24) & 0xf;
wc->src_qp = be32toh(cqe->flags_rqpn) & 0xffffff;
wc->dlid_path_bits = cqe->ml_path & 0x7f;
g = (be32toh(cqe->flags_rqpn) >> 28) & 3;
wc->wc_flags |= g ? IBV_WC_GRH : 0;
wc->pkey_index = be32toh(cqe->imm_inval_pkey) & 0xffff;
return IBV_WC_SUCCESS;
}
static void dump_cqe(struct mlx5_context *mctx, void *buf)
{
__be32 *p = buf;
int i;
for (i = 0; i < 16; i += 4)
mlx5_err(mctx->dbg_fp, "%08x %08x %08x %08x\n", be32toh(p[i]), be32toh(p[i + 1]),
be32toh(p[i + 2]), be32toh(p[i + 3]));
}
static enum ibv_wc_status mlx5_handle_error_cqe(struct mlx5_err_cqe *cqe)
{
switch (cqe->syndrome) {
case MLX5_CQE_SYNDROME_LOCAL_LENGTH_ERR:
return IBV_WC_LOC_LEN_ERR;
case MLX5_CQE_SYNDROME_LOCAL_QP_OP_ERR:
return IBV_WC_LOC_QP_OP_ERR;
case MLX5_CQE_SYNDROME_LOCAL_PROT_ERR:
return IBV_WC_LOC_PROT_ERR;
case MLX5_CQE_SYNDROME_WR_FLUSH_ERR:
return IBV_WC_WR_FLUSH_ERR;
case MLX5_CQE_SYNDROME_MW_BIND_ERR:
return IBV_WC_MW_BIND_ERR;
case MLX5_CQE_SYNDROME_BAD_RESP_ERR:
return IBV_WC_BAD_RESP_ERR;
case MLX5_CQE_SYNDROME_LOCAL_ACCESS_ERR:
return IBV_WC_LOC_ACCESS_ERR;
case MLX5_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR:
return IBV_WC_REM_INV_REQ_ERR;
case MLX5_CQE_SYNDROME_REMOTE_ACCESS_ERR:
return IBV_WC_REM_ACCESS_ERR;
case MLX5_CQE_SYNDROME_REMOTE_OP_ERR:
return IBV_WC_REM_OP_ERR;
case MLX5_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR:
return IBV_WC_RETRY_EXC_ERR;
case MLX5_CQE_SYNDROME_RNR_RETRY_EXC_ERR:
return IBV_WC_RNR_RETRY_EXC_ERR;
case MLX5_CQE_SYNDROME_REMOTE_ABORTED_ERR:
return IBV_WC_REM_ABORT_ERR;
default:
return IBV_WC_GENERAL_ERR;
}
}
#if defined(__x86_64__) || defined (__i386__)
static inline unsigned long get_cycles(void)
{
uint32_t low, high;
uint64_t val;
asm volatile ("rdtsc" : "=a" (low), "=d" (high));
val = high;
val = (val << 32) | low;
return val;
}
static void mlx5_stall_poll_cq(void)
{
int i;
for (i = 0; i < mlx5_stall_num_loop; i++)
(void)get_cycles();
}
static void mlx5_stall_cycles_poll_cq(uint64_t cycles)
{
while (get_cycles() < cycles)
; /* Nothing */
}
static void mlx5_get_cycles(uint64_t *cycles)
{
*cycles = get_cycles();
}
#else
static void mlx5_stall_poll_cq(void)
{
}
static void mlx5_stall_cycles_poll_cq(uint64_t cycles)
{
}
static void mlx5_get_cycles(uint64_t *cycles)
{
}
#endif
static inline struct mlx5_qp *get_req_context(struct mlx5_context *mctx,
struct mlx5_resource **cur_rsc,
uint32_t rsn, int cqe_ver)
ALWAYS_INLINE;
static inline struct mlx5_qp *get_req_context(struct mlx5_context *mctx,
struct mlx5_resource **cur_rsc,
uint32_t rsn, int cqe_ver)
{
if (!*cur_rsc || (rsn != (*cur_rsc)->rsn))
*cur_rsc = cqe_ver ? mlx5_find_uidx(mctx, rsn) :
(struct mlx5_resource *)mlx5_find_qp(mctx, rsn);
return rsc_to_mqp(*cur_rsc);
}
static inline int get_resp_ctx_v1(struct mlx5_context *mctx,
struct mlx5_resource **cur_rsc,
struct mlx5_srq **cur_srq,
uint32_t uidx, uint8_t *is_srq)
ALWAYS_INLINE;
static inline int get_resp_ctx_v1(struct mlx5_context *mctx,
struct mlx5_resource **cur_rsc,
struct mlx5_srq **cur_srq,
uint32_t uidx, uint8_t *is_srq)
{
struct mlx5_qp *mqp;
if (!*cur_rsc || (uidx != (*cur_rsc)->rsn)) {
*cur_rsc = mlx5_find_uidx(mctx, uidx);
if (unlikely(!*cur_rsc))
return CQ_POLL_ERR;
}
switch ((*cur_rsc)->type) {
case MLX5_RSC_TYPE_QP:
mqp = rsc_to_mqp(*cur_rsc);
if (mqp->verbs_qp.qp.srq) {
*cur_srq = to_msrq(mqp->verbs_qp.qp.srq);
*is_srq = 1;
}
break;
case MLX5_RSC_TYPE_XSRQ:
*cur_srq = rsc_to_msrq(*cur_rsc);
*is_srq = 1;
break;
case MLX5_RSC_TYPE_RWQ:
break;
default:
return CQ_POLL_ERR;
}
return CQ_OK;
}
static inline int get_qp_ctx(struct mlx5_context *mctx,
struct mlx5_resource **cur_rsc,
uint32_t qpn)
ALWAYS_INLINE;
static inline int get_qp_ctx(struct mlx5_context *mctx,
struct mlx5_resource **cur_rsc,
uint32_t qpn)
{
if (!*cur_rsc || (qpn != (*cur_rsc)->rsn)) {
/*
* We do not have to take the QP table lock here,
* because CQs will be locked while QPs are removed
* from the table.
*/
*cur_rsc = (struct mlx5_resource *)mlx5_find_qp(mctx, qpn);
if (unlikely(!*cur_rsc))
return CQ_POLL_ERR;
}
return CQ_OK;
}
static inline int get_srq_ctx(struct mlx5_context *mctx,
struct mlx5_srq **cur_srq,
uint32_t srqn_uidx)
ALWAYS_INLINE;
static inline int get_srq_ctx(struct mlx5_context *mctx,
struct mlx5_srq **cur_srq,
uint32_t srqn)
{
if (!*cur_srq || (srqn != (*cur_srq)->srqn)) {
*cur_srq = mlx5_find_srq(mctx, srqn);
if (unlikely(!*cur_srq))
return CQ_POLL_ERR;
}
return CQ_OK;
}
static inline int get_cur_rsc(struct mlx5_context *mctx,
int cqe_ver,
uint32_t qpn,
uint32_t srqn_uidx,
struct mlx5_resource **cur_rsc,
struct mlx5_srq **cur_srq,
uint8_t *is_srq)
{
int err;
if (cqe_ver) {
err = get_resp_ctx_v1(mctx, cur_rsc, cur_srq, srqn_uidx,
is_srq);
} else {
if (srqn_uidx) {
*is_srq = 1;
err = get_srq_ctx(mctx, cur_srq, srqn_uidx);
} else {
err = get_qp_ctx(mctx, cur_rsc, qpn);
}
}
return err;
}
static inline int mlx5_get_next_cqe(struct mlx5_cq *cq,
struct mlx5_cqe64 **pcqe64,
void **pcqe)
ALWAYS_INLINE;
static inline int mlx5_get_next_cqe(struct mlx5_cq *cq,
struct mlx5_cqe64 **pcqe64,
void **pcqe)
{
void *cqe;
struct mlx5_cqe64 *cqe64;
cqe = next_cqe_sw(cq);
if (!cqe)
return CQ_EMPTY;
cqe64 = (cq->cqe_sz == 64) ? cqe : cqe + 64;
++cq->cons_index;
VALGRIND_MAKE_MEM_DEFINED(cqe64, sizeof *cqe64);
/*
* Make sure we read CQ entry contents after we've checked the
* ownership bit.
*/
udma_from_device_barrier();
#ifdef MLX5_DEBUG
{
struct mlx5_context *mctx = to_mctx(cq->verbs_cq.cq_ex.context);
if (mlx5_debug_mask & MLX5_DBG_CQ_CQE) {
mlx5_dbg(mctx->dbg_fp, MLX5_DBG_CQ_CQE,
"dump cqe for cqn 0x%x:\n", cq->cqn);
dump_cqe(mctx, cqe64);
}
}
#endif
*pcqe64 = cqe64;
*pcqe = cqe;
return CQ_OK;
}
static int handle_tag_matching(struct mlx5_cq *cq,
struct mlx5_cqe64 *cqe64,
struct mlx5_srq *srq)
{
FILE *fp = to_mctx(srq->vsrq.srq.context)->dbg_fp;
struct mlx5_tag_entry *tag;
struct mlx5_srq_op *op;
uint16_t wqe_ctr;
cq->verbs_cq.cq_ex.status = IBV_WC_SUCCESS;
switch (cqe64->app_op) {
case MLX5_CQE_APP_OP_TM_CONSUMED_MSG_SW_RDNV:
case MLX5_CQE_APP_OP_TM_CONSUMED_SW_RDNV:
case MLX5_CQE_APP_OP_TM_MSG_COMPLETION_CANCELED:
cq->verbs_cq.cq_ex.status = IBV_WC_TM_RNDV_INCOMPLETE;
SWITCH_FALLTHROUGH;
case MLX5_CQE_APP_OP_TM_CONSUMED_MSG:
case MLX5_CQE_APP_OP_TM_CONSUMED:
case MLX5_CQE_APP_OP_TM_EXPECTED:
mlx5_spin_lock(&srq->lock);
tag = &srq->tm_list[be16toh(cqe64->app_info)];
if (!tag->expect_cqe) {
mlx5_dbg(fp, MLX5_DBG_CQ, "got idx %d which wasn't added\n",
be16toh(cqe64->app_info));
cq->verbs_cq.cq_ex.status = IBV_WC_GENERAL_ERR;
mlx5_spin_unlock(&srq->lock);
return CQ_OK;
}
cq->verbs_cq.cq_ex.wr_id = tag->wr_id;
if (mlx5_cqe_app_op_tm_is_complete(cqe64->app_op))
mlx5_tm_release_tag(srq, tag);
/* inline scatter 32 not supported for TM */
if (cqe64->op_own & MLX5_INLINE_SCATTER_64) {
if (be32toh(cqe64->byte_cnt) > tag->size)
cq->verbs_cq.cq_ex.status = IBV_WC_LOC_LEN_ERR;
else
memcpy(tag->ptr, cqe64 - 1,
be32toh(cqe64->byte_cnt));
}
mlx5_spin_unlock(&srq->lock);
break;
case MLX5_CQE_APP_OP_TM_REMOVE:
if (!(be32toh(cqe64->tm_cqe.success) & MLX5_TMC_SUCCESS))
cq->verbs_cq.cq_ex.status = IBV_WC_TM_ERR;
SWITCH_FALLTHROUGH;
case MLX5_CQE_APP_OP_TM_APPEND:
case MLX5_CQE_APP_OP_TM_NOOP:
mlx5_spin_lock(&srq->lock);
#ifdef MLX5_DEBUG
if (srq->op_tail == srq->op_head) {
mlx5_dbg(fp, MLX5_DBG_CQ, "got unexpected list op CQE\n");
cq->verbs_cq.cq_ex.status = IBV_WC_GENERAL_ERR;
mlx5_spin_unlock(&srq->lock);
return CQ_OK;
}
#endif
op = srq->op + (srq->op_head++ &
(to_mqp(srq->cmd_qp)->sq.wqe_cnt - 1));
if (op->tag) { /* APPEND or REMOVE */
mlx5_tm_release_tag(srq, op->tag);
if (cqe64->app_op == MLX5_CQE_APP_OP_TM_REMOVE &&
cq->verbs_cq.cq_ex.status == IBV_WC_SUCCESS)
/*
* If tag entry was successfully removed we
* don't expect consumption completion for it
* anymore. Remove reports failure if tag was
* consumed meanwhile.
*/
mlx5_tm_release_tag(srq, op->tag);
if (be16toh(cqe64->tm_cqe.hw_phase_cnt) !=
op->tag->phase_cnt)
cq->flags |= MLX5_CQ_FLAGS_TM_SYNC_REQ;
}
to_mqp(srq->cmd_qp)->sq.tail = op->wqe_head + 1;
cq->verbs_cq.cq_ex.wr_id = op->wr_id;
mlx5_spin_unlock(&srq->lock);
break;
case MLX5_CQE_APP_OP_TM_UNEXPECTED:
srq->unexp_in++;
if (srq->unexp_in - srq->unexp_out > MLX5_TM_MAX_SYNC_DIFF)
cq->flags |= MLX5_CQ_FLAGS_TM_SYNC_REQ;
SWITCH_FALLTHROUGH;
case MLX5_CQE_APP_OP_TM_NO_TAG:
wqe_ctr = be16toh(cqe64->wqe_counter);
cq->verbs_cq.cq_ex.wr_id = srq->wrid[wqe_ctr];
mlx5_free_srq_wqe(srq, wqe_ctr);
if (cqe64->op_own & MLX5_INLINE_SCATTER_32)
return mlx5_copy_to_recv_srq(srq, wqe_ctr, cqe64,
be32toh(cqe64->byte_cnt));
else if (cqe64->op_own & MLX5_INLINE_SCATTER_64)
return mlx5_copy_to_recv_srq(srq, wqe_ctr, cqe64 - 1,
be32toh(cqe64->byte_cnt));
break;
#ifdef MLX5_DEBUG
default:
mlx5_dbg(fp, MLX5_DBG_CQ, "un-expected TM opcode in cqe\n");
#endif
}
return CQ_OK;
}
static inline void get_sig_err_info(struct mlx5_sigerr_cqe *cqe,
struct mlx5_sig_err *err)
{
err->syndrome = be16toh(cqe->syndrome);
err->expected = (uint64_t)be32toh(cqe->expected_trans_sig) << 32 |
be32toh(cqe->expected_ref_tag);
err->actual = (uint64_t)be32toh(cqe->actual_trans_sig) << 32 |
be32toh(cqe->actual_ref_tag);
err->offset = be64toh(cqe->sig_err_offset);
err->sig_type = cqe->sig_type & 0x7;
err->domain = cqe->domain & 0x7;
}
static inline int is_odp_pfault_err(struct mlx5_err_cqe *ecqe)
{
return ecqe->syndrome == MLX5_CQE_SYNDROME_REMOTE_ABORTED_ERR &&
ecqe->vendor_err_synd == MLX5_CQE_VENDOR_SYNDROME_ODP_PFAULT;
}
static inline int mlx5_parse_cqe(struct mlx5_cq *cq,
struct mlx5_cqe64 *cqe64,
void *cqe,
struct mlx5_resource **cur_rsc,
struct mlx5_srq **cur_srq,
struct ibv_wc *wc,
int cqe_ver, int lazy)
ALWAYS_INLINE;
static inline int mlx5_parse_cqe(struct mlx5_cq *cq,
struct mlx5_cqe64 *cqe64,
void *cqe,
struct mlx5_resource **cur_rsc,
struct mlx5_srq **cur_srq,
struct ibv_wc *wc,
int cqe_ver, int lazy)
{
struct mlx5_wq *wq;
uint16_t wqe_ctr;
uint32_t qpn;
uint32_t srqn_uidx;
int idx;
uint8_t opcode;
struct mlx5_err_cqe *ecqe;
struct mlx5_sigerr_cqe *sigerr_cqe;
struct mlx5_mkey *mkey;
int err;
struct mlx5_qp *mqp;
struct mlx5_context *mctx;
uint8_t is_srq;
again:
is_srq = 0;
err = 0;
mctx = to_mctx(cq->verbs_cq.cq.context);
qpn = be32toh(cqe64->sop_drop_qpn) & 0xffffff;
if (lazy) {
cq->cqe64 = cqe64;
cq->flags &= (~MLX5_CQ_LAZY_FLAGS);
} else {
wc->wc_flags = 0;
wc->qp_num = qpn;
}
opcode = mlx5dv_get_cqe_opcode(cqe64);
switch (opcode) {
case MLX5_CQE_REQ:
{
mqp = get_req_context(mctx, cur_rsc,
(cqe_ver ? (be32toh(cqe64->srqn_uidx) & 0xffffff) : qpn),
cqe_ver);
if (unlikely(!mqp))
return CQ_POLL_ERR;
wq = &mqp->sq;
wqe_ctr = be16toh(cqe64->wqe_counter);
idx = wqe_ctr & (wq->wqe_cnt - 1);
if (lazy) {
uint32_t wc_byte_len;
switch (be32toh(cqe64->sop_drop_qpn) >> 24) {
case MLX5_OPCODE_UMR:
case MLX5_OPCODE_SET_PSV:
case MLX5_OPCODE_NOP:
case MLX5_OPCODE_MMO:
cq->cached_opcode = wq->wr_data[idx];
break;
case MLX5_OPCODE_RDMA_READ:
wc_byte_len = be32toh(cqe64->byte_cnt);
goto scatter_out;
case MLX5_OPCODE_ATOMIC_CS:
case MLX5_OPCODE_ATOMIC_FA:
wc_byte_len = 8;
scatter_out:
if (cqe64->op_own & MLX5_INLINE_SCATTER_32)
err = mlx5_copy_to_send_wqe(
mqp, wqe_ctr, cqe, wc_byte_len);
else if (cqe64->op_own & MLX5_INLINE_SCATTER_64)
err = mlx5_copy_to_send_wqe(
mqp, wqe_ctr, cqe - 1, wc_byte_len);
break;
}
cq->verbs_cq.cq_ex.wr_id = wq->wrid[idx];
cq->verbs_cq.cq_ex.status = err;
if (unlikely(wq->wr_data[idx] == IBV_WC_DRIVER2))
cq->flags |= MLX5_CQ_FLAGS_RAW_WQE;
} else {
handle_good_req(wc, cqe64, wq, idx);
if (cqe64->op_own & MLX5_INLINE_SCATTER_32)
err = mlx5_copy_to_send_wqe(mqp, wqe_ctr, cqe,
wc->byte_len);
else if (cqe64->op_own & MLX5_INLINE_SCATTER_64)
err = mlx5_copy_to_send_wqe(
mqp, wqe_ctr, cqe - 1, wc->byte_len);
wc->wr_id = wq->wrid[idx];
wc->status = err;
}
wq->tail = wq->wqe_head[idx] + 1;
break;
}
case MLX5_CQE_RESP_WR_IMM:
case MLX5_CQE_RESP_SEND:
case MLX5_CQE_RESP_SEND_IMM:
case MLX5_CQE_RESP_SEND_INV:
srqn_uidx = be32toh(cqe64->srqn_uidx) & 0xffffff;
err = get_cur_rsc(mctx, cqe_ver, qpn, srqn_uidx, cur_rsc,
cur_srq, &is_srq);
if (unlikely(err))
return CQ_POLL_ERR;
if (lazy) {
if (likely(cqe64->app != MLX5_CQE_APP_TAG_MATCHING)) {
cq->verbs_cq.cq_ex.status = handle_responder_lazy
(cq, cqe64, *cur_rsc,
is_srq ? *cur_srq : NULL);
} else {
if (unlikely(!is_srq))
return CQ_POLL_ERR;
err = handle_tag_matching(cq, cqe64, *cur_srq);
if (unlikely(err))
return CQ_POLL_ERR;
}
} else {
wc->status = handle_responder(wc, cqe64, *cur_rsc,
is_srq ? *cur_srq : NULL);
}
break;
case MLX5_CQE_NO_PACKET:
if (unlikely(cqe64->app != MLX5_CQE_APP_TAG_MATCHING))
return CQ_POLL_ERR;
srqn_uidx = be32toh(cqe64->srqn_uidx) & 0xffffff;
err = get_cur_rsc(mctx, cqe_ver, qpn, srqn_uidx, cur_rsc,
cur_srq, &is_srq);
if (unlikely(err || !is_srq))
return CQ_POLL_ERR;
err = handle_tag_matching(cq, cqe64, *cur_srq);
if (unlikely(err))
return CQ_POLL_ERR;
break;
case MLX5_CQE_SIG_ERR:
sigerr_cqe = (struct mlx5_sigerr_cqe *)cqe64;
pthread_mutex_lock(&mctx->mkey_table_mutex);
mkey = mlx5_find_mkey(mctx, be32toh(sigerr_cqe->mkey) >> 8);
if (!mkey) {
pthread_mutex_unlock(&mctx->mkey_table_mutex);
return CQ_POLL_ERR;
}
mkey->sig->err_exists = true;
mkey->sig->err_count++;
mkey->sig->err_count_updated = true;
get_sig_err_info(sigerr_cqe, &mkey->sig->err_info);
pthread_mutex_unlock(&mctx->mkey_table_mutex);
err = mlx5_get_next_cqe(cq, &cqe64, &cqe);
/*
* CQ_POLL_NODATA indicates that CQ was not empty but the polled
* CQE was handled internally and should not processed by the
* caller.
*/
if (err == CQ_EMPTY)
return CQ_POLL_NODATA;
goto again;
case MLX5_CQE_RESIZE_CQ:
break;
case MLX5_CQE_REQ_ERR:
case MLX5_CQE_RESP_ERR:
srqn_uidx = be32toh(cqe64->srqn_uidx) & 0xffffff;
ecqe = (struct mlx5_err_cqe *)cqe64;
{
enum ibv_wc_status *pstatus = lazy ? &cq->verbs_cq.cq_ex.status : &wc->status;
*pstatus = mlx5_handle_error_cqe(ecqe);
}
if (!lazy)
wc->vendor_err = ecqe->vendor_err_synd;
if (unlikely(ecqe->syndrome != MLX5_CQE_SYNDROME_WR_FLUSH_ERR &&
ecqe->syndrome != MLX5_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR &&
!is_odp_pfault_err(ecqe))) {
mlx5_err(mctx->dbg_fp, PFX "%s: got completion with error:\n",
mctx->hostname);
dump_cqe(mctx, ecqe);
if (mlx5_freeze_on_error_cqe) {
mlx5_err(mctx->dbg_fp, PFX "freezing at poll cq...");
while (1)
sleep(10);
}
}
if (opcode == MLX5_CQE_REQ_ERR) {
mqp = get_req_context(mctx, cur_rsc,
(cqe_ver ? srqn_uidx : qpn), cqe_ver);
if (unlikely(!mqp))
return CQ_POLL_ERR;
wq = &mqp->sq;
wqe_ctr = be16toh(cqe64->wqe_counter);
idx = wqe_ctr & (wq->wqe_cnt - 1);
if (lazy)
cq->verbs_cq.cq_ex.wr_id = wq->wrid[idx];
else
wc->wr_id = wq->wrid[idx];
wq->tail = wq->wqe_head[idx] + 1;
} else {
err = get_cur_rsc(mctx, cqe_ver, qpn, srqn_uidx,
cur_rsc, cur_srq, &is_srq);
if (unlikely(err))
return CQ_POLL_ERR;
if (is_srq) {
wqe_ctr = be16toh(cqe64->wqe_counter);
if (is_odp_pfault_err(ecqe)) {
mlx5_complete_odp_fault(*cur_srq, wqe_ctr);
err = mlx5_get_next_cqe(cq, &cqe64, &cqe);
/* CQ_POLL_NODATA indicates that CQ was not empty but the polled CQE
* was handled internally and should not processed by the caller.
*/
if (err == CQ_EMPTY)
return CQ_POLL_NODATA;
goto again;
}
if (lazy)
cq->verbs_cq.cq_ex.wr_id = (*cur_srq)->wrid[wqe_ctr];
else
wc->wr_id = (*cur_srq)->wrid[wqe_ctr];
mlx5_free_srq_wqe(*cur_srq, wqe_ctr);
} else {
switch ((*cur_rsc)->type) {
case MLX5_RSC_TYPE_RWQ:
wq = &(rsc_to_mrwq(*cur_rsc)->rq);
break;
default:
wq = &(rsc_to_mqp(*cur_rsc)->rq);
break;
}
if (lazy)
cq->verbs_cq.cq_ex.wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)];
else
wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)];
++wq->tail;
}
}
break;
}
return CQ_OK;
}
static inline int mlx5_parse_lazy_cqe(struct mlx5_cq *cq,
struct mlx5_cqe64 *cqe64,
void *cqe, int cqe_ver)
ALWAYS_INLINE;
static inline int mlx5_parse_lazy_cqe(struct mlx5_cq *cq,
struct mlx5_cqe64 *cqe64,
void *cqe, int cqe_ver)
{
return mlx5_parse_cqe(cq, cqe64, cqe, &cq->cur_rsc, &cq->cur_srq, NULL, cqe_ver, 1);
}
static inline int mlx5_poll_one(struct mlx5_cq *cq,
struct mlx5_resource **cur_rsc,
struct mlx5_srq **cur_srq,
struct ibv_wc *wc, int cqe_ver)
ALWAYS_INLINE;
static inline int mlx5_poll_one(struct mlx5_cq *cq,
struct mlx5_resource **cur_rsc,
struct mlx5_srq **cur_srq,
struct ibv_wc *wc, int cqe_ver)
{
struct mlx5_cqe64 *cqe64;
void *cqe;
int err;
err = mlx5_get_next_cqe(cq, &cqe64, &cqe);
if (err == CQ_EMPTY)
return err;
return mlx5_parse_cqe(cq, cqe64, cqe, cur_rsc, cur_srq, wc, cqe_ver, 0);
}
static inline int poll_cq(struct ibv_cq *ibcq, int ne,
struct ibv_wc *wc, int cqe_ver)
ALWAYS_INLINE;
static inline int poll_cq(struct ibv_cq *ibcq, int ne,
struct ibv_wc *wc, int cqe_ver)
{
struct mlx5_cq *cq = to_mcq(ibcq);
struct mlx5_resource *rsc = NULL;
struct mlx5_srq *srq = NULL;
int npolled;
int err = CQ_OK;
if (cq->stall_enable) {
if (cq->stall_adaptive_enable) {
if (cq->stall_last_count)
mlx5_stall_cycles_poll_cq(cq->stall_last_count + cq->stall_cycles);
} else if (cq->stall_next_poll) {
cq->stall_next_poll = 0;
mlx5_stall_poll_cq();
}
}
mlx5_spin_lock(&cq->lock);
for (npolled = 0; npolled < ne; ++npolled) {
err = mlx5_poll_one(cq, &rsc, &srq, wc + npolled, cqe_ver);
if (err != CQ_OK)
break;
}
update_cons_index(cq);
mlx5_spin_unlock(&cq->lock);
if (cq->stall_enable) {
if (cq->stall_adaptive_enable) {
if (npolled == 0) {
cq->stall_cycles = max(cq->stall_cycles-mlx5_stall_cq_dec_step,
mlx5_stall_cq_poll_min);
mlx5_get_cycles(&cq->stall_last_count);
} else if (npolled < ne) {
cq->stall_cycles = min(cq->stall_cycles+mlx5_stall_cq_inc_step,
mlx5_stall_cq_poll_max);
mlx5_get_cycles(&cq->stall_last_count);
} else {
cq->stall_cycles = max(cq->stall_cycles-mlx5_stall_cq_dec_step,
mlx5_stall_cq_poll_min);
cq->stall_last_count = 0;
}
} else if (err == CQ_EMPTY) {
cq->stall_next_poll = 1;
}
}
return err == CQ_POLL_ERR ? err : npolled;
}
enum polling_mode {
POLLING_MODE_NO_STALL,
POLLING_MODE_STALL,
POLLING_MODE_STALL_ADAPTIVE
};
static inline void _mlx5_end_poll(struct ibv_cq_ex *ibcq,
int lock, enum polling_mode stall)
ALWAYS_INLINE;
static inline void _mlx5_end_poll(struct ibv_cq_ex *ibcq,
int lock, enum polling_mode stall)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
update_cons_index(cq);
if (lock)
mlx5_spin_unlock(&cq->lock);
if (stall) {
if (stall == POLLING_MODE_STALL_ADAPTIVE) {
if (!(cq->flags & MLX5_CQ_FLAGS_FOUND_CQES)) {
cq->stall_cycles = max(cq->stall_cycles - mlx5_stall_cq_dec_step,
mlx5_stall_cq_poll_min);
mlx5_get_cycles(&cq->stall_last_count);
} else if (cq->flags & MLX5_CQ_FLAGS_EMPTY_DURING_POLL) {
cq->stall_cycles = min(cq->stall_cycles + mlx5_stall_cq_inc_step,
mlx5_stall_cq_poll_max);
mlx5_get_cycles(&cq->stall_last_count);
} else {
cq->stall_cycles = max(cq->stall_cycles - mlx5_stall_cq_dec_step,
mlx5_stall_cq_poll_min);
cq->stall_last_count = 0;
}
} else if (!(cq->flags & MLX5_CQ_FLAGS_FOUND_CQES)) {
cq->stall_next_poll = 1;
}
cq->flags &= ~(MLX5_CQ_FLAGS_FOUND_CQES | MLX5_CQ_FLAGS_EMPTY_DURING_POLL);
}
}
static inline int mlx5_start_poll(struct ibv_cq_ex *ibcq, struct ibv_poll_cq_attr *attr,
int lock, enum polling_mode stall,
int cqe_version, int clock_update)
ALWAYS_INLINE;
static inline int mlx5_start_poll(struct ibv_cq_ex *ibcq, struct ibv_poll_cq_attr *attr,
int lock, enum polling_mode stall,
int cqe_version, int clock_update)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
struct mlx5_cqe64 *cqe64;
void *cqe;
int err;
if (unlikely(attr->comp_mask))
return EINVAL;
if (stall) {
if (stall == POLLING_MODE_STALL_ADAPTIVE) {
if (cq->stall_last_count)
mlx5_stall_cycles_poll_cq(cq->stall_last_count + cq->stall_cycles);
} else if (cq->stall_next_poll) {
cq->stall_next_poll = 0;
mlx5_stall_poll_cq();
}
}
if (lock)
mlx5_spin_lock(&cq->lock);
cq->cur_rsc = NULL;
cq->cur_srq = NULL;
err = mlx5_get_next_cqe(cq, &cqe64, &cqe);
if (err == CQ_EMPTY) {
if (lock)
mlx5_spin_unlock(&cq->lock);
if (stall) {
if (stall == POLLING_MODE_STALL_ADAPTIVE) {
cq->stall_cycles = max(cq->stall_cycles - mlx5_stall_cq_dec_step,
mlx5_stall_cq_poll_min);
mlx5_get_cycles(&cq->stall_last_count);
} else {
cq->stall_next_poll = 1;
}
}
return ENOENT;
}
if (stall)
cq->flags |= MLX5_CQ_FLAGS_FOUND_CQES;
err = mlx5_parse_lazy_cqe(cq, cqe64, cqe, cqe_version);
if (lock && err)
mlx5_spin_unlock(&cq->lock);
if (stall && err == CQ_POLL_ERR) {
if (stall == POLLING_MODE_STALL_ADAPTIVE) {
cq->stall_cycles = max(cq->stall_cycles - mlx5_stall_cq_dec_step,
mlx5_stall_cq_poll_min);
cq->stall_last_count = 0;
}
cq->flags &= ~(MLX5_CQ_FLAGS_FOUND_CQES);
goto out;
}
if (clock_update && !err) {
err = mlx5dv_get_clock_info(ibcq->context, &cq->last_clock_info);
if (lock && err)
mlx5_spin_unlock(&cq->lock);
}
out:
return err;
}
static inline int mlx5_next_poll(struct ibv_cq_ex *ibcq,
enum polling_mode stall, int cqe_version)
ALWAYS_INLINE;
static inline int mlx5_next_poll(struct ibv_cq_ex *ibcq,
enum polling_mode stall,
int cqe_version)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
struct mlx5_cqe64 *cqe64;
void *cqe;
int err;
err = mlx5_get_next_cqe(cq, &cqe64, &cqe);
if (err == CQ_EMPTY) {
if (stall == POLLING_MODE_STALL_ADAPTIVE)
cq->flags |= MLX5_CQ_FLAGS_EMPTY_DURING_POLL;
return ENOENT;
}
return mlx5_parse_lazy_cqe(cq, cqe64, cqe, cqe_version);
}
static inline int mlx5_next_poll_adaptive_v0(struct ibv_cq_ex *ibcq)
{
return mlx5_next_poll(ibcq, POLLING_MODE_STALL_ADAPTIVE, 0);
}
static inline int mlx5_next_poll_adaptive_v1(struct ibv_cq_ex *ibcq)
{
return mlx5_next_poll(ibcq, POLLING_MODE_STALL_ADAPTIVE, 1);
}
static inline int mlx5_next_poll_v0(struct ibv_cq_ex *ibcq)
{
return mlx5_next_poll(ibcq, 0, 0);
}
static inline int mlx5_next_poll_v1(struct ibv_cq_ex *ibcq)
{
return mlx5_next_poll(ibcq, 0, 1);
}
static inline int mlx5_start_poll_v0(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 0, 0, 0, 0);
}
static inline int mlx5_start_poll_v1(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 0, 0, 1, 0);
}
static inline int mlx5_start_poll_v0_lock(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 1, 0, 0, 0);
}
static inline int mlx5_start_poll_v1_lock(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 1, 0, 1, 0);
}
static inline int mlx5_start_poll_adaptive_stall_v0_lock(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 1, POLLING_MODE_STALL_ADAPTIVE, 0, 0);
}
static inline int mlx5_start_poll_stall_v0_lock(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 1, POLLING_MODE_STALL, 0, 0);
}
static inline int mlx5_start_poll_adaptive_stall_v1_lock(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 1, POLLING_MODE_STALL_ADAPTIVE, 1, 0);
}
static inline int mlx5_start_poll_stall_v1_lock(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 1, POLLING_MODE_STALL, 1, 0);
}
static inline int mlx5_start_poll_stall_v0(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 0, POLLING_MODE_STALL, 0, 0);
}
static inline int mlx5_start_poll_adaptive_stall_v0(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 0, POLLING_MODE_STALL_ADAPTIVE, 0, 0);
}
static inline int mlx5_start_poll_adaptive_stall_v1(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 0, POLLING_MODE_STALL_ADAPTIVE, 1, 0);
}
static inline int mlx5_start_poll_stall_v1(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 0, POLLING_MODE_STALL, 1, 0);
}
static inline int mlx5_start_poll_v0_lock_clock_update(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 1, 0, 0, 1);
}
static inline int mlx5_start_poll_v1_lock_clock_update(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 1, 0, 1, 1);
}
static inline int mlx5_start_poll_v1_clock_update(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 0, 0, 1, 1);
}
static inline int mlx5_start_poll_v0_clock_update(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 0, 0, 0, 1);
}
static inline int mlx5_start_poll_stall_v1_lock_clock_update(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 1, POLLING_MODE_STALL, 1, 1);
}
static inline int mlx5_start_poll_stall_v0_lock_clock_update(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 1, POLLING_MODE_STALL, 0, 1);
}
static inline int mlx5_start_poll_stall_v1_clock_update(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 0, POLLING_MODE_STALL, 1, 1);
}
static inline int mlx5_start_poll_stall_v0_clock_update(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 0, POLLING_MODE_STALL, 0, 1);
}
static inline int mlx5_start_poll_adaptive_stall_v0_lock_clock_update(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 1, POLLING_MODE_STALL_ADAPTIVE, 0, 1);
}
static inline int mlx5_start_poll_adaptive_stall_v1_lock_clock_update(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 1, POLLING_MODE_STALL_ADAPTIVE, 1, 1);
}
static inline int mlx5_start_poll_adaptive_stall_v0_clock_update(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 0, POLLING_MODE_STALL_ADAPTIVE, 0, 1);
}
static inline int mlx5_start_poll_adaptive_stall_v1_clock_update(struct ibv_cq_ex *ibcq,
struct ibv_poll_cq_attr *attr)
{
return mlx5_start_poll(ibcq, attr, 0, POLLING_MODE_STALL_ADAPTIVE, 1, 1);
}
static inline void mlx5_end_poll_adaptive_stall_lock(struct ibv_cq_ex *ibcq)
{
_mlx5_end_poll(ibcq, 1, POLLING_MODE_STALL_ADAPTIVE);
}
static inline void mlx5_end_poll_stall_lock(struct ibv_cq_ex *ibcq)
{
_mlx5_end_poll(ibcq, 1, POLLING_MODE_STALL);
}
static inline void mlx5_end_poll_adaptive_stall(struct ibv_cq_ex *ibcq)
{
_mlx5_end_poll(ibcq, 0, POLLING_MODE_STALL_ADAPTIVE);
}
static inline void mlx5_end_poll_stall(struct ibv_cq_ex *ibcq)
{
_mlx5_end_poll(ibcq, 0, POLLING_MODE_STALL);
}
static inline void mlx5_end_poll(struct ibv_cq_ex *ibcq)
{
_mlx5_end_poll(ibcq, 0, 0);
}
static inline void mlx5_end_poll_lock(struct ibv_cq_ex *ibcq)
{
_mlx5_end_poll(ibcq, 1, 0);
}
int mlx5_poll_cq(struct ibv_cq *ibcq, int ne, struct ibv_wc *wc)
{
return poll_cq(ibcq, ne, wc, 0);
}
int mlx5_poll_cq_v1(struct ibv_cq *ibcq, int ne, struct ibv_wc *wc)
{
return poll_cq(ibcq, ne, wc, 1);
}
static inline enum ibv_wc_opcode mlx5_cq_read_wc_opcode(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
switch (mlx5dv_get_cqe_opcode(cq->cqe64)) {
case MLX5_CQE_RESP_WR_IMM:
return IBV_WC_RECV_RDMA_WITH_IMM;
case MLX5_CQE_RESP_SEND:
case MLX5_CQE_RESP_SEND_IMM:
case MLX5_CQE_RESP_SEND_INV:
if (unlikely(cq->cqe64->app == MLX5_CQE_APP_TAG_MATCHING)) {
switch (cq->cqe64->app_op) {
case MLX5_CQE_APP_OP_TM_CONSUMED_MSG_SW_RDNV:
case MLX5_CQE_APP_OP_TM_CONSUMED_MSG:
case MLX5_CQE_APP_OP_TM_CONSUMED_SW_RDNV:
case MLX5_CQE_APP_OP_TM_EXPECTED:
case MLX5_CQE_APP_OP_TM_UNEXPECTED:
return IBV_WC_TM_RECV;
case MLX5_CQE_APP_OP_TM_NO_TAG:
return IBV_WC_TM_NO_TAG;
}
}
return IBV_WC_RECV;
case MLX5_CQE_NO_PACKET:
switch (cq->cqe64->app_op) {
case MLX5_CQE_APP_OP_TM_REMOVE:
return IBV_WC_TM_DEL;
case MLX5_CQE_APP_OP_TM_APPEND:
return IBV_WC_TM_ADD;
case MLX5_CQE_APP_OP_TM_NOOP:
return IBV_WC_TM_SYNC;
case MLX5_CQE_APP_OP_TM_CONSUMED:
return IBV_WC_TM_RECV;
}
break;
case MLX5_CQE_REQ:
if (unlikely(cq->flags & MLX5_CQ_FLAGS_RAW_WQE))
return IBV_WC_DRIVER2;
switch (be32toh(cq->cqe64->sop_drop_qpn) >> 24) {
case MLX5_OPCODE_RDMA_WRITE_IMM:
case MLX5_OPCODE_RDMA_WRITE:
return IBV_WC_RDMA_WRITE;
case MLX5_OPCODE_SEND_IMM:
case MLX5_OPCODE_SEND:
case MLX5_OPCODE_SEND_INVAL:
return IBV_WC_SEND;
case MLX5_OPCODE_RDMA_READ:
return IBV_WC_RDMA_READ;
case MLX5_OPCODE_ATOMIC_CS:
return IBV_WC_COMP_SWAP;
case MLX5_OPCODE_ATOMIC_FA:
return IBV_WC_FETCH_ADD;
case MLX5_OPCODE_UMR:
case MLX5_OPCODE_SET_PSV:
case MLX5_OPCODE_NOP:
case MLX5_OPCODE_MMO:
return cq->cached_opcode;
case MLX5_OPCODE_TSO:
return IBV_WC_TSO;
}
}
#ifdef MLX5_DEBUG
{
struct mlx5_context *ctx = to_mctx(ibcq->context);
mlx5_dbg(ctx->dbg_fp, MLX5_DBG_CQ_CQE, "un-expected opcode in cqe\n");
}
#endif
return 0;
}
static inline uint32_t mlx5_cq_read_wc_qp_num(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
return be32toh(cq->cqe64->sop_drop_qpn) & 0xffffff;
}
static inline unsigned int mlx5_cq_read_wc_flags(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
int wc_flags = 0;
if (cq->flags & MLX5_CQ_FLAGS_RX_CSUM_VALID)
wc_flags = get_csum_ok(cq->cqe64);
switch (mlx5dv_get_cqe_opcode(cq->cqe64)) {
case MLX5_CQE_RESP_WR_IMM:
case MLX5_CQE_RESP_SEND_IMM:
wc_flags |= IBV_WC_WITH_IMM;
break;
case MLX5_CQE_RESP_SEND_INV:
wc_flags |= IBV_WC_WITH_INV;
break;
}
if (cq->flags & MLX5_CQ_FLAGS_TM_SYNC_REQ)
wc_flags |= IBV_WC_TM_SYNC_REQ;
if (unlikely(cq->cqe64->app == MLX5_CQE_APP_TAG_MATCHING)) {
switch (cq->cqe64->app_op) {
case MLX5_CQE_APP_OP_TM_CONSUMED_MSG_SW_RDNV:
case MLX5_CQE_APP_OP_TM_CONSUMED_MSG:
case MLX5_CQE_APP_OP_TM_MSG_COMPLETION_CANCELED:
/* Full completion */
wc_flags |= (IBV_WC_TM_MATCH | IBV_WC_TM_DATA_VALID);
break;
case MLX5_CQE_APP_OP_TM_CONSUMED_SW_RDNV:
case MLX5_CQE_APP_OP_TM_CONSUMED: /* First completion */
wc_flags |= IBV_WC_TM_MATCH;
break;
case MLX5_CQE_APP_OP_TM_EXPECTED: /* Second completion */
wc_flags |= IBV_WC_TM_DATA_VALID;
break;
}
}
wc_flags |= ((be32toh(cq->cqe64->flags_rqpn) >> 28) & 3) ? IBV_WC_GRH : 0;
return wc_flags;
}
static inline uint32_t mlx5_cq_read_wc_byte_len(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
return be32toh(cq->cqe64->byte_cnt);
}
static inline uint32_t mlx5_cq_read_wc_vendor_err(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
struct mlx5_err_cqe *ecqe = (struct mlx5_err_cqe *)cq->cqe64;
return ecqe->vendor_err_synd;
}
static inline __be32 mlx5_cq_read_wc_imm_data(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
switch (mlx5dv_get_cqe_opcode(cq->cqe64)) {
case MLX5_CQE_RESP_SEND_INV:
/* This is returning invalidate_rkey which is in host order, see
* ibv_wc_read_invalidated_rkey
*/
return (__force __be32)be32toh(cq->cqe64->imm_inval_pkey);
default:
return cq->cqe64->imm_inval_pkey;
}
}
static inline uint32_t mlx5_cq_read_wc_slid(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
return (uint32_t)be16toh(cq->cqe64->slid);
}
static inline uint8_t mlx5_cq_read_wc_sl(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
return (be32toh(cq->cqe64->flags_rqpn) >> 24) & 0xf;
}
static inline uint32_t mlx5_cq_read_wc_src_qp(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
return be32toh(cq->cqe64->flags_rqpn) & 0xffffff;
}
static inline uint8_t mlx5_cq_read_wc_dlid_path_bits(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
return cq->cqe64->ml_path & 0x7f;
}
static inline uint64_t mlx5_cq_read_wc_completion_ts(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
return be64toh(cq->cqe64->timestamp);
}
static inline uint64_t
mlx5_cq_read_wc_completion_wallclock_ns(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
return mlx5dv_ts_to_ns(&cq->last_clock_info,
mlx5_cq_read_wc_completion_ts(ibcq));
}
static inline uint16_t mlx5_cq_read_wc_cvlan(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
return be16toh(cq->cqe64->vlan_info);
}
static inline uint32_t mlx5_cq_read_flow_tag(struct ibv_cq_ex *ibcq)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
return be32toh(cq->cqe64->sop_drop_qpn) & MLX5_FLOW_TAG_MASK;
}
static inline void mlx5_cq_read_wc_tm_info(struct ibv_cq_ex *ibcq,
struct ibv_wc_tm_info *tm_info)
{
struct mlx5_cq *cq = to_mcq(ibv_cq_ex_to_cq(ibcq));
tm_info->tag = be64toh(cq->cqe64->tmh.tag);
tm_info->priv = be32toh(cq->cqe64->tmh.app_ctx);
}
#define SINGLE_THREADED BIT(0)
#define STALL BIT(1)
#define V1 BIT(2)
#define ADAPTIVE BIT(3)
#define CLOCK_UPDATE BIT(4)
#define mlx5_start_poll_name(cqe_ver, lock, stall, adaptive, clock_update) \
mlx5_start_poll##adaptive##stall##cqe_ver##lock##clock_update
#define mlx5_next_poll_name(cqe_ver, adaptive) \
mlx5_next_poll##adaptive##cqe_ver
#define mlx5_end_poll_name(lock, stall, adaptive) \
mlx5_end_poll##adaptive##stall##lock
#define POLL_FN_ENTRY(cqe_ver, lock, stall, adaptive, clock_update) { \
.start_poll = &mlx5_start_poll_name(cqe_ver, lock, stall, adaptive, clock_update), \
.next_poll = &mlx5_next_poll_name(cqe_ver, adaptive), \
.end_poll = &mlx5_end_poll_name(lock, stall, adaptive), \
}
static const struct op
{
int (*start_poll)(struct ibv_cq_ex *ibcq, struct ibv_poll_cq_attr *attr);
int (*next_poll)(struct ibv_cq_ex *ibcq);
void (*end_poll)(struct ibv_cq_ex *ibcq);
} ops[ADAPTIVE + V1 + STALL + SINGLE_THREADED + CLOCK_UPDATE + 1] = {
[V1] = POLL_FN_ENTRY(_v1, _lock, , ,),
[0] = POLL_FN_ENTRY(_v0, _lock, , ,),
[V1 | SINGLE_THREADED] = POLL_FN_ENTRY(_v1, , , , ),
[SINGLE_THREADED] = POLL_FN_ENTRY(_v0, , , , ),
[V1 | STALL] = POLL_FN_ENTRY(_v1, _lock, _stall, , ),
[STALL] = POLL_FN_ENTRY(_v0, _lock, _stall, , ),
[V1 | SINGLE_THREADED | STALL] = POLL_FN_ENTRY(_v1, , _stall, , ),
[SINGLE_THREADED | STALL] = POLL_FN_ENTRY(_v0, , _stall, , ),
[V1 | STALL | ADAPTIVE] = POLL_FN_ENTRY(_v1, _lock, _stall, _adaptive, ),
[STALL | ADAPTIVE] = POLL_FN_ENTRY(_v0, _lock, _stall, _adaptive, ),
[V1 | SINGLE_THREADED | STALL | ADAPTIVE] = POLL_FN_ENTRY(_v1, , _stall, _adaptive, ),
[SINGLE_THREADED | STALL | ADAPTIVE] = POLL_FN_ENTRY(_v0, , _stall, _adaptive, ),
[V1 | CLOCK_UPDATE] = POLL_FN_ENTRY(_v1, _lock, , , _clock_update),
[0 | CLOCK_UPDATE] = POLL_FN_ENTRY(_v0, _lock, , , _clock_update),
[V1 | SINGLE_THREADED | CLOCK_UPDATE] = POLL_FN_ENTRY(_v1, , , , _clock_update),
[SINGLE_THREADED | CLOCK_UPDATE] = POLL_FN_ENTRY(_v0, , , , _clock_update),
[V1 | STALL | CLOCK_UPDATE] = POLL_FN_ENTRY(_v1, _lock, _stall, , _clock_update),
[STALL | CLOCK_UPDATE] = POLL_FN_ENTRY(_v0, _lock, _stall, , _clock_update),
[V1 | SINGLE_THREADED | STALL | CLOCK_UPDATE] = POLL_FN_ENTRY(_v1, , _stall, , _clock_update),
[SINGLE_THREADED | STALL | CLOCK_UPDATE] = POLL_FN_ENTRY(_v0, , _stall, , _clock_update),
[V1 | STALL | ADAPTIVE | CLOCK_UPDATE] = POLL_FN_ENTRY(_v1, _lock, _stall, _adaptive, _clock_update),
[STALL | ADAPTIVE | CLOCK_UPDATE] = POLL_FN_ENTRY(_v0, _lock, _stall, _adaptive, _clock_update),
[V1 | SINGLE_THREADED | STALL | ADAPTIVE | CLOCK_UPDATE] = POLL_FN_ENTRY(_v1, , _stall, _adaptive, _clock_update),
[SINGLE_THREADED | STALL | ADAPTIVE | CLOCK_UPDATE] = POLL_FN_ENTRY(_v0, , _stall, _adaptive, _clock_update),
};
int mlx5_cq_fill_pfns(struct mlx5_cq *cq,
const struct ibv_cq_init_attr_ex *cq_attr,
struct mlx5_context *mctx)
{
const struct op *poll_ops = &ops[((cq->stall_enable && cq->stall_adaptive_enable) ? ADAPTIVE : 0) |
(mctx->cqe_version ? V1 : 0) |
(cq->flags & MLX5_CQ_FLAGS_SINGLE_THREADED ?
SINGLE_THREADED : 0) |
(cq->stall_enable ? STALL : 0) |
((cq_attr->wc_flags & IBV_WC_EX_WITH_COMPLETION_TIMESTAMP_WALLCLOCK) ?
CLOCK_UPDATE : 0)];
cq->verbs_cq.cq_ex.start_poll = poll_ops->start_poll;
cq->verbs_cq.cq_ex.next_poll = poll_ops->next_poll;
cq->verbs_cq.cq_ex.end_poll = poll_ops->end_poll;
cq->verbs_cq.cq_ex.read_opcode = mlx5_cq_read_wc_opcode;
cq->verbs_cq.cq_ex.read_vendor_err = mlx5_cq_read_wc_vendor_err;
cq->verbs_cq.cq_ex.read_wc_flags = mlx5_cq_read_wc_flags;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_BYTE_LEN)
cq->verbs_cq.cq_ex.read_byte_len = mlx5_cq_read_wc_byte_len;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_IMM)
cq->verbs_cq.cq_ex.read_imm_data = mlx5_cq_read_wc_imm_data;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_QP_NUM)
cq->verbs_cq.cq_ex.read_qp_num = mlx5_cq_read_wc_qp_num;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_SRC_QP)
cq->verbs_cq.cq_ex.read_src_qp = mlx5_cq_read_wc_src_qp;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_SLID)
cq->verbs_cq.cq_ex.read_slid = mlx5_cq_read_wc_slid;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_SL)
cq->verbs_cq.cq_ex.read_sl = mlx5_cq_read_wc_sl;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_DLID_PATH_BITS)
cq->verbs_cq.cq_ex.read_dlid_path_bits = mlx5_cq_read_wc_dlid_path_bits;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_COMPLETION_TIMESTAMP)
cq->verbs_cq.cq_ex.read_completion_ts = mlx5_cq_read_wc_completion_ts;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_CVLAN)
cq->verbs_cq.cq_ex.read_cvlan = mlx5_cq_read_wc_cvlan;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_FLOW_TAG)
cq->verbs_cq.cq_ex.read_flow_tag = mlx5_cq_read_flow_tag;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_TM_INFO)
cq->verbs_cq.cq_ex.read_tm_info = mlx5_cq_read_wc_tm_info;
if (cq_attr->wc_flags & IBV_WC_EX_WITH_COMPLETION_TIMESTAMP_WALLCLOCK) {
if (mctx->flags & MLX5_CTX_FLAGS_REAL_TIME_TS_SUPPORTED &&
!(cq_attr->wc_flags & IBV_WC_EX_WITH_COMPLETION_TIMESTAMP))
cq->verbs_cq.cq_ex.read_completion_wallclock_ns =
mlx5_cq_read_wc_completion_ts;
else {
if (!mctx->clock_info_page)
return EOPNOTSUPP;
cq->verbs_cq.cq_ex.read_completion_wallclock_ns =
mlx5_cq_read_wc_completion_wallclock_ns;
}
}
return 0;
}
int mlx5_arm_cq(struct ibv_cq *ibvcq, int solicited)
{
struct mlx5_cq *cq = to_mcq(ibvcq);
struct mlx5_context *ctx = to_mctx(ibvcq->context);
uint64_t doorbell;
uint32_t sn;
uint32_t ci;
uint32_t cmd;
sn = cq->arm_sn & 3;
ci = cq->cons_index & 0xffffff;
cmd = solicited ? MLX5_CQ_DB_REQ_NOT_SOL : MLX5_CQ_DB_REQ_NOT;
doorbell = sn << 28 | cmd | ci;
doorbell <<= 32;
doorbell |= cq->cqn;
cq->dbrec[MLX5_CQ_ARM_DB] = htobe32(sn << 28 | cmd | ci);
/*
* Make sure that the doorbell record in host memory is
* written before ringing the doorbell via PCI WC MMIO.
*/
mmio_wc_start();
mmio_write64_be(ctx->cq_uar_reg + MLX5_CQ_DOORBELL, htobe64(doorbell));
mmio_flush_writes();
return 0;
}
void mlx5_cq_event(struct ibv_cq *cq)
{
to_mcq(cq)->arm_sn++;
}
static int is_equal_rsn(struct mlx5_cqe64 *cqe64, uint32_t rsn)
{
return rsn == (be32toh(cqe64->sop_drop_qpn) & 0xffffff);
}
static inline int is_equal_uidx(struct mlx5_cqe64 *cqe64, uint32_t uidx)
{
return uidx == (be32toh(cqe64->srqn_uidx) & 0xffffff);
}
static inline int is_responder(uint8_t opcode)
{
switch (opcode) {
case MLX5_CQE_RESP_WR_IMM:
case MLX5_CQE_RESP_SEND:
case MLX5_CQE_RESP_SEND_IMM:
case MLX5_CQE_RESP_SEND_INV:
case MLX5_CQE_RESP_ERR:
return 1;
}
return 0;
}
static inline int free_res_cqe(struct mlx5_cqe64 *cqe64, uint32_t rsn,
struct mlx5_srq *srq, int cqe_version)
{
if (cqe_version) {
if (is_equal_uidx(cqe64, rsn)) {
if (srq && is_responder(mlx5dv_get_cqe_opcode(cqe64)))
mlx5_free_srq_wqe(srq,
be16toh(cqe64->wqe_counter));
return 1;
}
} else {
if (is_equal_rsn(cqe64, rsn)) {
if (srq && (be32toh(cqe64->srqn_uidx) & 0xffffff))
mlx5_free_srq_wqe(srq,
be16toh(cqe64->wqe_counter));
return 1;
}
}
return 0;
}
void __mlx5_cq_clean(struct mlx5_cq *cq, uint32_t rsn, struct mlx5_srq *srq)
{
uint32_t prod_index;
int nfreed = 0;
struct mlx5_cqe64 *cqe64, *dest64;
void *cqe, *dest;
uint8_t owner_bit;
int cqe_version;
if (!cq || cq->flags & MLX5_CQ_FLAGS_DV_OWNED)
return;
/*
* First we need to find the current producer index, so we
* know where to start cleaning from. It doesn't matter if HW
* adds new entries after this loop -- the QP we're worried
* about is already in RESET, so the new entries won't come
* from our QP and therefore don't need to be checked.
*/
for (prod_index = cq->cons_index; get_sw_cqe(cq, prod_index); ++prod_index)
if (prod_index == cq->cons_index + cq->verbs_cq.cq.cqe)
break;
/*
* Now sweep backwards through the CQ, removing CQ entries
* that match our QP by copying older entries on top of them.
*/
cqe_version = (to_mctx(cq->verbs_cq.cq.context))->cqe_version;
while ((int) --prod_index - (int) cq->cons_index >= 0) {
cqe = get_cqe(cq, prod_index & cq->verbs_cq.cq.cqe);
cqe64 = (cq->cqe_sz == 64) ? cqe : cqe + 64;
if (free_res_cqe(cqe64, rsn, srq, cqe_version)) {
++nfreed;
} else if (nfreed) {
dest = get_cqe(cq, (prod_index + nfreed) & cq->verbs_cq.cq.cqe);
dest64 = (cq->cqe_sz == 64) ? dest : dest + 64;
owner_bit = dest64->op_own & MLX5_CQE_OWNER_MASK;
memcpy(dest, cqe, cq->cqe_sz);
dest64->op_own = owner_bit |
(dest64->op_own & ~MLX5_CQE_OWNER_MASK);
}
}
if (nfreed) {
cq->cons_index += nfreed;
/*
* Make sure update of buffer contents is done before
* updating consumer index.
*/
udma_to_device_barrier();
update_cons_index(cq);
}
}
void mlx5_cq_clean(struct mlx5_cq *cq, uint32_t qpn, struct mlx5_srq *srq)
{
mlx5_spin_lock(&cq->lock);
__mlx5_cq_clean(cq, qpn, srq);
mlx5_spin_unlock(&cq->lock);
}
static uint8_t sw_ownership_bit(int n, int nent)
{
return (n & nent) ? 1 : 0;
}
static int is_hw(uint8_t own, int n, int mask)
{
return (own & MLX5_CQE_OWNER_MASK) ^ !!(n & (mask + 1));
}
void mlx5_cq_resize_copy_cqes(struct mlx5_context *mctx, struct mlx5_cq *cq)
{
struct mlx5_cqe64 *scqe64;
struct mlx5_cqe64 *dcqe64;
void *start_cqe;
void *scqe;
void *dcqe;
int ssize;
int dsize;
int i;
uint8_t sw_own;
ssize = cq->cqe_sz;
dsize = cq->resize_cqe_sz;
i = cq->cons_index;
scqe = get_buf_cqe(cq->active_buf, i & cq->active_cqes, ssize);
scqe64 = ssize == 64 ? scqe : scqe + 64;
start_cqe = scqe;
if (is_hw(scqe64->op_own, i, cq->active_cqes)) {
mlx5_err(mctx->dbg_fp, "expected cqe in sw ownership\n");
return;
}
while ((scqe64->op_own >> 4) != MLX5_CQE_RESIZE_CQ) {
dcqe = get_buf_cqe(cq->resize_buf, (i + 1) & (cq->resize_cqes - 1), dsize);
dcqe64 = dsize == 64 ? dcqe : dcqe + 64;
sw_own = sw_ownership_bit(i + 1, cq->resize_cqes);
memcpy(dcqe, scqe, ssize);
dcqe64->op_own = (dcqe64->op_own & ~MLX5_CQE_OWNER_MASK) | sw_own;
++i;
scqe = get_buf_cqe(cq->active_buf, i & cq->active_cqes, ssize);
scqe64 = ssize == 64 ? scqe : scqe + 64;
if (is_hw(scqe64->op_own, i, cq->active_cqes)) {
mlx5_err(mctx->dbg_fp, "expected cqe in sw ownership\n");
return;
}
if (scqe == start_cqe) {
mlx5_err(mctx->dbg_fp, "resize CQ failed to get resize CQE\n");
return;
}
}
++cq->cons_index;
}
int mlx5_alloc_cq_buf(struct mlx5_context *mctx, struct mlx5_cq *cq,
struct mlx5_buf *buf, int nent, int cqe_sz)
{
struct mlx5_cqe64 *cqe;
int i;
struct mlx5_device *dev = to_mdev(mctx->ibv_ctx.context.device);
int ret;
enum mlx5_alloc_type type;
enum mlx5_alloc_type default_type = MLX5_ALLOC_TYPE_ANON;
if (mlx5_use_huge("HUGE_CQ"))
default_type = MLX5_ALLOC_TYPE_HUGE;
mlx5_get_alloc_type(mctx, cq->parent_domain,
MLX5_CQ_PREFIX, &type, default_type);
if (type == MLX5_ALLOC_TYPE_CUSTOM) {
buf->mparent_domain = to_mparent_domain(cq->parent_domain);
buf->req_alignment = dev->page_size;
buf->resource_type = MLX5DV_RES_TYPE_CQ;
}
ret = mlx5_alloc_prefered_buf(mctx, buf,
align(nent * cqe_sz, dev->page_size),
dev->page_size,
type,
MLX5_CQ_PREFIX);
if (ret)
return -1;
if (buf->type != MLX5_ALLOC_TYPE_CUSTOM)
memset(buf->buf, 0, nent * cqe_sz);
for (i = 0; i < nent; ++i) {
cqe = buf->buf + i * cqe_sz;
cqe += cqe_sz == 128 ? 1 : 0;
cqe->op_own = MLX5_CQE_INVALID << 4;
}
return 0;
}
int mlx5_free_cq_buf(struct mlx5_context *ctx, struct mlx5_buf *buf)
{
return mlx5_free_actual_buf(ctx, buf);
}