From patchwork Wed Mar 15 10:37:33 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Devesh Sharma X-Patchwork-Id: 9625233 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 82A0F60424 for ; Wed, 15 Mar 2017 10:38:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8572828558 for ; Wed, 15 Mar 2017 10:38:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7A62E285F4; Wed, 15 Mar 2017 10:38:25 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E1BE0285F5 for ; Wed, 15 Mar 2017 10:38:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752651AbdCOKiT (ORCPT ); Wed, 15 Mar 2017 06:38:19 -0400 Received: from mail-wm0-f53.google.com ([74.125.82.53]:36525 "EHLO mail-wm0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752511AbdCOKiS (ORCPT ); Wed, 15 Mar 2017 06:38:18 -0400 Received: by mail-wm0-f53.google.com with SMTP id n11so84056557wma.1 for ; Wed, 15 Mar 2017 03:38:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:subject:date:message-id:in-reply-to:references; bh=KzrBmIc4xj3/TJHH9nc2gVcgtc4rZTp3Wsy4v6uRYBg=; b=Fh8sjxyoJ3Wqd7CMD/qrVXxP47n+/33qEwt/0n7wWbanu7tcXka562SPRKYoT4FYWZ qhJPbh6koMWJPZwRcGMtGemJ9pqW/QTfU3wAGKeT11gmsdDYUSL7s+K5n3fU6/3qmbUh QG0nAI9AGinIz41HuhkI0a3dXlOzpvFuL+HbI= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references; bh=KzrBmIc4xj3/TJHH9nc2gVcgtc4rZTp3Wsy4v6uRYBg=; b=hkTa5mExDtuuOZt6P6m6ILrlKSiiwWvsiRpnVbeioxv+DbKeeh5gs5hOLD5UcQ+Nap LU3LcQdE3cMQV/3EtPJRPDoKtAyJyUXDf+um2gPiuu6wGcxsDlvmnqp5c6L/GF9pXIuH GILZdVY9QQGB8zVE++eqLsrHpP0NQHjlsZUvxkhtoli7dAGNVle9aXz8Y1S0UnnbMArl OrLGM5dj1oaYuR9Ee3VTuemJSJETna3Sk2TwnNL0Jb3ed3kggLpKwKcarMk04jCMxHg9 ep2goPlFFAnZ3zZeTVtPUnEFlWGId9NRPU76c7XJlf/3fEPf9lUvF/IlrAq3Wzz50IZ0 e9sw== X-Gm-Message-State: AFeK/H2T5XUptZ3wEioxIiwWorE51vi6Un//2D5enTY/BC5hyahY/SM1apZfrQzgbupoObFz X-Received: by 10.28.24.5 with SMTP id 5mr3663522wmy.1.1489574295960; Wed, 15 Mar 2017 03:38:15 -0700 (PDT) Received: from neo00-el73.iig.avagotech.net ([192.19.239.250]) by smtp.gmail.com with ESMTPSA id 63sm3240365wmg.22.2017.03.15.03.38.13 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 15 Mar 2017 03:38:15 -0700 (PDT) From: Devesh Sharma To: linux-rdma@vger.kernel.org Subject: [rdma-core v3 9/9] libbnxt_re: Add support for SRQ in user lib Date: Wed, 15 Mar 2017 06:37:33 -0400 Message-Id: <1489574253-20300-10-git-send-email-devesh.sharma@broadcom.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1489574253-20300-1-git-send-email-devesh.sharma@broadcom.com> References: <1489574253-20300-1-git-send-email-devesh.sharma@broadcom.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds support for shared receive queue. Following are the changes: - Add ABI for user/kernel information exchange. - Add function to handle SRQ ARMing and DB-ring. - Add function to create/destroy SRQ. - Add function to query/modify SRQ. - Add function to post RQE on a SRQ. Signed-off-by: Sriharsha Basavapatna Signed-off-by: Somnath Kotur Signed-off-by: Selvin Xavier Signed-off-by: Devesh Sharma --- providers/bnxt_re/bnxt_re-abi.h | 15 +++ providers/bnxt_re/db.c | 18 +++ providers/bnxt_re/main.h | 32 ++++- providers/bnxt_re/verbs.c | 259 ++++++++++++++++++++++++++++++++++------ 4 files changed, 286 insertions(+), 38 deletions(-) diff --git a/providers/bnxt_re/bnxt_re-abi.h b/providers/bnxt_re/bnxt_re-abi.h index 557221b..8dbb7b9 100644 --- a/providers/bnxt_re/bnxt_re-abi.h +++ b/providers/bnxt_re/bnxt_re-abi.h @@ -214,6 +214,7 @@ struct bnxt_re_mr_resp { struct ibv_reg_mr_resp resp; }; +/* CQ */ struct bnxt_re_cq_req { struct ibv_create_cq cmd; __u64 cq_va; @@ -261,6 +262,7 @@ struct bnxt_re_term_cqe { __u64 rsvd1; }; +/* QP */ struct bnxt_re_qp_req { struct ibv_create_qp cmd; __u64 qpsva; @@ -352,6 +354,19 @@ struct bnxt_re_rqe { __u64 rsvd[2]; }; +/* SRQ */ +struct bnxt_re_srq_req { + struct ibv_create_srq cmd; + __u64 srqva; + __u64 srq_handle; +}; + +struct bnxt_re_srq_resp { + struct ibv_create_srq_resp resp; + __u32 srqid; + __u32 rsvd; +}; + struct bnxt_re_srqe { __u32 srq_tag; /* 20 bits are valid */ __u32 rsvd1; diff --git a/providers/bnxt_re/db.c b/providers/bnxt_re/db.c index 6804946..3a85b2f 100644 --- a/providers/bnxt_re/db.c +++ b/providers/bnxt_re/db.c @@ -75,6 +75,24 @@ void bnxt_re_ring_sq_db(struct bnxt_re_qp *qp) bnxt_re_ring_db(qp->udpi, &hdr); } +void bnxt_re_ring_srq_db(struct bnxt_re_srq *srq) +{ + struct bnxt_re_db_hdr hdr; + + bnxt_re_init_db_hdr(&hdr, srq->srqq->tail, srq->srqid, + BNXT_RE_QUE_TYPE_SRQ); + bnxt_re_ring_db(srq->udpi, &hdr); +} + +void bnxt_re_ring_srq_arm(struct bnxt_re_srq *srq) +{ + struct bnxt_re_db_hdr hdr; + + bnxt_re_init_db_hdr(&hdr, srq->cap.srq_limit, srq->srqid, + BNXT_RE_QUE_TYPE_SRQ_ARM); + bnxt_re_ring_db(srq->udpi, &hdr); +} + void bnxt_re_ring_cq_db(struct bnxt_re_cq *cq) { struct bnxt_re_db_hdr hdr; diff --git a/providers/bnxt_re/main.h b/providers/bnxt_re/main.h index a417328..3ddffde 100644 --- a/providers/bnxt_re/main.h +++ b/providers/bnxt_re/main.h @@ -76,10 +76,6 @@ struct bnxt_re_cq { uint8_t phase; }; -struct bnxt_re_srq { - struct ibv_srq ibvsrq; -}; - struct bnxt_re_wrid { struct bnxt_re_psns *psns; uint64_t wrid; @@ -96,6 +92,16 @@ struct bnxt_re_qpcap { uint8_t sqsig; }; +struct bnxt_re_srq { + struct ibv_srq ibvsrq; + struct ibv_srq_attr cap; + struct bnxt_re_queue *srqq; + struct bnxt_re_wrid *srwrid; + struct bnxt_re_dpi *udpi; + uint32_t srqid; + uint32_t pre_count; +}; + struct bnxt_re_qp { struct ibv_qp ibvqp; struct bnxt_re_queue *sqq; @@ -151,6 +157,7 @@ struct bnxt_re_context { /* DB ring functions used internally*/ void bnxt_re_ring_rq_db(struct bnxt_re_qp *qp); void bnxt_re_ring_sq_db(struct bnxt_re_qp *qp); +void bnxt_re_ring_srq_arm(struct bnxt_re_srq *srq); void bnxt_re_ring_srq_db(struct bnxt_re_srq *srq); void bnxt_re_ring_cq_db(struct bnxt_re_cq *cq); void bnxt_re_ring_cq_arm_db(struct bnxt_re_cq *cq, uint8_t aflag); @@ -182,6 +189,11 @@ static inline struct bnxt_re_qp *to_bnxt_re_qp(struct ibv_qp *ibvqp) return container_of(ibvqp, struct bnxt_re_qp, ibvqp); } +static inline struct bnxt_re_srq *to_bnxt_re_srq(struct ibv_srq *ibvsrq) +{ + return container_of(ibvsrq, struct bnxt_re_srq, ibvsrq); +} + static inline struct bnxt_re_ah *to_bnxt_re_ah(struct ibv_ah *ibvah) { return container_of(ibvah, struct bnxt_re_ah, ibvah); @@ -211,6 +223,18 @@ static inline uint32_t bnxt_re_get_rqe_hdr_sz(void) return sizeof(struct bnxt_re_brqe) + sizeof(struct bnxt_re_rqe); } +static inline uint32_t bnxt_re_get_srqe_hdr_sz(void) +{ + return sizeof(struct bnxt_re_brqe) + sizeof(struct bnxt_re_srqe); +} + +static inline uint32_t bnxt_re_get_srqe_sz(void) +{ + return sizeof(struct bnxt_re_brqe) + + sizeof(struct bnxt_re_srqe) + + BNXT_RE_MAX_INLINE_SIZE; +} + static inline uint32_t bnxt_re_get_cqe_sz(void) { return sizeof(struct bnxt_re_req_cqe) + sizeof(struct bnxt_re_bcqe); diff --git a/providers/bnxt_re/verbs.c b/providers/bnxt_re/verbs.c index 85d77cd..dafe55b 100644 --- a/providers/bnxt_re/verbs.c +++ b/providers/bnxt_re/verbs.c @@ -339,36 +339,40 @@ static uint8_t bnxt_re_poll_scqe(struct bnxt_re_qp *qp, struct ibv_wc *ibvwc, static int bnxt_re_poll_err_rcqe(struct bnxt_re_qp *qp, struct ibv_wc *ibvwc, struct bnxt_re_bcqe *hdr, void *cqe) { - struct bnxt_re_queue *rq = qp->rqq; + struct bnxt_re_queue *rq; struct bnxt_re_wrid *rwrid; struct bnxt_re_cq *rcq; struct bnxt_re_context *cntx; - uint32_t head = rq->head; uint8_t status; rcq = to_bnxt_re_cq(qp->ibvqp.recv_cq); cntx = to_bnxt_re_context(rcq->ibvcq.context); - rwrid = &qp->rwrid[head]; + if (!qp->srq) { + rq = qp->rqq; + rwrid = &qp->rwrid[rq->head]; + } else { + rq = qp->srq->srqq; + rwrid = &qp->srq->srwrid[rq->head]; + } + status = (hdr->flg_st_typ_ph >> BNXT_RE_BCQE_STATUS_SHIFT) & BNXT_RE_BCQE_STATUS_MASK; /* skip h/w flush errors */ if (status == BNXT_RE_RSP_ST_HW_FLUSH) return 0; + ibvwc->status = bnxt_re_to_ibv_wc_status(status, false); - /* TODO: Add SRQ Processing here */ - if (qp->rqq) { - ibvwc->wr_id = rwrid->wrid; - ibvwc->qp_num = qp->qpid; - ibvwc->opcode = IBV_WC_RECV; - ibvwc->byte_len = 0; - ibvwc->wc_flags = 0; - if (qp->qptyp == IBV_QPT_UD) - ibvwc->src_qp = 0; + ibvwc->wr_id = rwrid->wrid; + ibvwc->qp_num = qp->qpid; + ibvwc->opcode = IBV_WC_RECV; + ibvwc->byte_len = 0; + ibvwc->wc_flags = 0; + if (qp->qptyp == IBV_QPT_UD) + ibvwc->src_qp = 0; + bnxt_re_incr_head(rq); - bnxt_re_incr_head(qp->rqq); - if (qp->qpst != IBV_QPS_ERR) - qp->qpst = IBV_QPS_ERR; + if (!qp->srq) { pthread_spin_lock(&cntx->fqlock); bnxt_re_fque_add_node(&rcq->rfhead, &qp->rnode); pthread_spin_unlock(&cntx->fqlock); @@ -396,14 +400,19 @@ static void bnxt_re_poll_success_rcqe(struct bnxt_re_qp *qp, struct ibv_wc *ibvwc, struct bnxt_re_bcqe *hdr, void *cqe) { - struct bnxt_re_queue *rq = qp->rqq; + struct bnxt_re_queue *rq; struct bnxt_re_wrid *rwrid; struct bnxt_re_rc_cqe *rcqe; - uint32_t head = rq->head; uint8_t flags, is_imm, is_rdma; rcqe = cqe; - rwrid = &qp->rwrid[head]; + if (!qp->srq) { + rq = qp->rqq; + rwrid = &qp->rwrid[rq->head]; + } else { + rq = qp->srq->srqq; + rwrid = &qp->srq->srwrid[rq->head]; + } ibvwc->status = IBV_WC_SUCCESS; ibvwc->wr_id = rwrid->wrid; @@ -512,9 +521,6 @@ static int bnxt_re_poll_one(struct bnxt_re_cq *cq, int nwc, struct ibv_wc *wc) qp = (struct bnxt_re_qp *)(uintptr_t)rcqe->qp_handle; if (!qp) break; /*stale cqe. should be rung.*/ - if (qp->srq) - goto bail; /*TODO: Add SRQ poll */ - pcqe = bnxt_re_poll_rcqe(qp, wc, cqe, &cnt); break; case BNXT_RE_WC_TYPE_RECV_RAW: @@ -554,7 +560,7 @@ skipp_real: if (hw_polled) bnxt_re_ring_cq_db(cq); -bail: + return dqed; } @@ -752,9 +758,7 @@ static int bnxt_re_alloc_queue_ptr(struct bnxt_re_qp *qp, qp->sqq = calloc(1, sizeof(struct bnxt_re_queue)); if (!qp->sqq) return -ENOMEM; - if (attr->srq) - qp->srq = NULL;/*TODO: to_bnxt_re_srq(attr->srq);*/ - else { + if (!attr->srq) { qp->rqq = calloc(1, sizeof(struct bnxt_re_queue)); if (!qp->rqq) { free(qp->sqq); @@ -767,10 +771,12 @@ static int bnxt_re_alloc_queue_ptr(struct bnxt_re_qp *qp, static void bnxt_re_free_queues(struct bnxt_re_qp *qp) { - if (qp->rwrid) - free(qp->rwrid); - pthread_spin_destroy(&qp->rqq->qlock); - bnxt_re_free_aligned(qp->rqq); + if (qp->rqq) { + if (qp->rwrid) + free(qp->rwrid); + pthread_spin_destroy(&qp->rqq->qlock); + bnxt_re_free_aligned(qp->rqq); + } if (qp->swrid) free(qp->swrid); @@ -881,6 +887,8 @@ struct ibv_qp *bnxt_re_create_qp(struct ibv_pd *ibvpd, qp->qpst = IBV_QPS_RESET; qp->scq = to_bnxt_re_cq(attr->send_cq); qp->rcq = to_bnxt_re_cq(attr->recv_cq); + if (attr->srq) + qp->srq = to_bnxt_re_srq(attr->srq); qp->udpi = &cntx->udpi; /* Save/return the altered Caps. */ attr->cap.max_send_wr = cap->max_swr; @@ -1319,32 +1327,215 @@ int bnxt_re_post_recv(struct ibv_qp *ibvqp, struct ibv_recv_wr *wr, return 0; } +static void bnxt_re_srq_free_queue_ptr(struct bnxt_re_srq *srq) +{ + if (srq && srq->srqq) + free(srq->srqq); + if (srq) + free(srq); +} + +static struct bnxt_re_srq *bnxt_re_srq_alloc_queue_ptr(void) +{ + struct bnxt_re_srq *srq; + + srq = calloc(1, sizeof(struct bnxt_re_srq)); + if (!srq) + return NULL; + + srq->srqq = calloc(1, sizeof(struct bnxt_re_queue)); + if (!srq->srqq) { + free(srq); + return NULL; + } + + return srq; +} + +static void bnxt_re_srq_free_queue(struct bnxt_re_srq *srq) +{ + if (srq->srwrid) + free(srq->srwrid); + pthread_spin_destroy(&srq->srqq->qlock); + bnxt_re_free_aligned(srq->srqq); +} + +static int bnxt_re_srq_alloc_queue(struct bnxt_re_srq *srq, + struct ibv_srq_init_attr *attr, + uint32_t pg_size) +{ + struct bnxt_re_queue *que; + int ret; + + que = srq->srqq; + que->depth = roundup_pow_of_two(attr->attr.max_wr + 1); + que->stride = bnxt_re_get_srqe_sz(); + ret = bnxt_re_alloc_aligned(que, pg_size); + if (ret) + goto bail; + pthread_spin_init(&que->qlock, PTHREAD_PROCESS_PRIVATE); + /* For SRQ only bnxt_re_wrid.wrid is used. */ + srq->srwrid = calloc(que->depth, sizeof(struct bnxt_re_wrid)); + if (!srq->srwrid) { + ret = -ENOMEM; + goto bail; + } + /*TODO: update actual max depth. */ + return 0; +bail: + bnxt_re_srq_free_queue(srq); + return ret; +} + struct ibv_srq *bnxt_re_create_srq(struct ibv_pd *ibvpd, struct ibv_srq_init_attr *attr) { + struct bnxt_re_srq *srq; + struct bnxt_re_srq_req cmd; + struct bnxt_re_srq_resp resp; + struct bnxt_re_context *cntx = to_bnxt_re_context(ibvpd->context); + struct bnxt_re_dev *dev = to_bnxt_re_dev(cntx->ibvctx.device); + int ret; + + /*TODO: Check max limit on queue depth and sge.*/ + srq = bnxt_re_srq_alloc_queue_ptr(); + if (!srq) + goto fail; + + if (bnxt_re_srq_alloc_queue(srq, attr, dev->pg_size)) + goto fail; + + cmd.srqva = (uintptr_t)srq->srqq->va; + cmd.srq_handle = (uintptr_t)srq; + ret = ibv_cmd_create_srq(ibvpd, &srq->ibvsrq, attr, + &cmd.cmd, sizeof(cmd), + &resp.resp, sizeof(resp)); + if (ret) + goto fail; + + srq->srqid = resp.srqid; + srq->udpi = &cntx->udpi; + srq->cap.max_wr = srq->srqq->depth; + srq->cap.max_sge = attr->attr.max_sge; + srq->cap.srq_limit = attr->attr.srq_limit; + srq->pre_count = 0; + + return &srq->ibvsrq; +fail: + bnxt_re_srq_free_queue_ptr(srq); return NULL; } int bnxt_re_modify_srq(struct ibv_srq *ibvsrq, struct ibv_srq_attr *attr, - int init_attr) + int attr_mask) { - return -ENOSYS; + struct bnxt_re_srq *srq = to_bnxt_re_srq(ibvsrq); + struct ibv_modify_srq cmd; + int status = 0; + + status = ibv_cmd_modify_srq(ibvsrq, attr, attr_mask, + &cmd, sizeof(cmd)); + if (!status && ((attr_mask & IBV_SRQ_LIMIT) && + (srq->cap.srq_limit != attr->srq_limit))) { + srq->cap.srq_limit = attr->srq_limit; + } + + return status; } int bnxt_re_destroy_srq(struct ibv_srq *ibvsrq) { - return -ENOSYS; + struct bnxt_re_srq *srq = to_bnxt_re_srq(ibvsrq); + int ret; + + ret = ibv_cmd_destroy_srq(ibvsrq); + if (ret) + return ret; + bnxt_re_srq_free_queue(srq); + bnxt_re_srq_free_queue_ptr(srq); + + return 0; } int bnxt_re_query_srq(struct ibv_srq *ibvsrq, struct ibv_srq_attr *attr) { - return -ENOSYS; + struct ibv_query_srq cmd; + int status; + + status = ibv_cmd_query_srq(ibvsrq, attr, &cmd, sizeof(cmd)); + if (status) + return status; + + return 0; +} + +static int bnxt_re_build_srqe(struct bnxt_re_srq *srq, + struct ibv_recv_wr *wr, void *srqe) +{ + struct bnxt_re_brqe *hdr = srqe; + struct bnxt_re_rqe *rwr; + struct bnxt_re_sge *sge; + struct bnxt_re_wrid *wrid; + int wqe_sz, len; + + rwr = (srqe + sizeof(struct bnxt_re_brqe)); + sge = (srqe + bnxt_re_get_srqe_hdr_sz()); + wrid = &srq->srwrid[srq->srqq->tail]; + + len = bnxt_re_build_sge(sge, wr->sg_list, wr->num_sge, false); + hdr->rsv_ws_fl_wt = BNXT_RE_WR_OPCD_RECV; + wqe_sz = wr->num_sge + (bnxt_re_get_srqe_hdr_sz() >> 4); /* 16B align */ + hdr->rsv_ws_fl_wt |= ((wqe_sz & BNXT_RE_HDR_WS_MASK) << + BNXT_RE_HDR_WS_SHIFT); + rwr->wrid = srq->srqq->tail; + + /* Fill wrid */ + wrid->wrid = wr->wr_id; + wrid->bytes = len; /* N.A. for RQE */ + wrid->sig = 0; /* N.A. for RQE */ + + return len; } int bnxt_re_post_srq_recv(struct ibv_srq *ibvsrq, struct ibv_recv_wr *wr, struct ibv_recv_wr **bad) { - return -ENOSYS; + struct bnxt_re_srq *srq = to_bnxt_re_srq(ibvsrq); + struct bnxt_re_queue *rq = srq->srqq; + void *srqe; + int ret; + + pthread_spin_lock(&rq->qlock); + while (wr) { + if (bnxt_re_is_que_full(rq) || + wr->num_sge > srq->cap.max_sge) { + *bad = wr; + pthread_spin_unlock(&rq->qlock); + return ENOMEM; + } + + srqe = (void *)(rq->va + (rq->tail * rq->stride)); + memset(srqe, 0, bnxt_re_get_srqe_sz()); + ret = bnxt_re_build_srqe(srq, wr, srqe); + if (ret < 0) { + pthread_spin_unlock(&rq->qlock); + *bad = wr; + return ENOMEM; + } + + bnxt_re_host_to_le64((uint64_t *)srqe, rq->stride); + bnxt_re_incr_tail(rq); + wr = wr->next; + bnxt_re_ring_srq_db(srq); + if ((srq->pre_count < srq->srqq->depth) && + (++srq->pre_count > srq->cap.srq_limit)) { + srq->pre_count = srq->srqq->depth; + bnxt_re_ring_srq_arm(srq); + } + } + pthread_spin_unlock(&rq->qlock); + + return 0; } struct ibv_ah *bnxt_re_create_ah(struct ibv_pd *ibvpd, struct ibv_ah_attr *attr)