From patchwork Sun Jan 14 22:35:54 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bernard Metzler X-Patchwork-Id: 10162869 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 5178460390 for ; Sun, 14 Jan 2018 22:36:29 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4151D28874 for ; Sun, 14 Jan 2018 22:36:29 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 35FDE2888E; Sun, 14 Jan 2018 22:36:29 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI 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 19B8A2887E for ; Sun, 14 Jan 2018 22:36:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752445AbeANWg0 (ORCPT ); Sun, 14 Jan 2018 17:36:26 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:43152 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751341AbeANWgY (ORCPT ); Sun, 14 Jan 2018 17:36:24 -0500 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w0EMY2Wv101647 for ; Sun, 14 Jan 2018 17:36:24 -0500 Received: from e06smtp13.uk.ibm.com (e06smtp13.uk.ibm.com [195.75.94.109]) by mx0b-001b2d01.pphosted.com with ESMTP id 2fg0fhbdf0-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Sun, 14 Jan 2018 17:36:23 -0500 Received: from localhost by e06smtp13.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Sun, 14 Jan 2018 22:36:19 -0000 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w0EMaIoU57802870; Sun, 14 Jan 2018 22:36:18 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 47EF411C052; Sun, 14 Jan 2018 22:30:05 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1EE2311C04A; Sun, 14 Jan 2018 22:30:05 +0000 (GMT) Received: from zac27.zurich.ibm.com (unknown [9.4.233.128]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Sun, 14 Jan 2018 22:30:05 +0000 (GMT) From: Bernard Metzler To: linux-rdma@vger.kernel.org Cc: Bernard Metzler Subject: [PATCH v3 04/13] SoftiWarp object management Date: Sun, 14 Jan 2018 17:35:54 -0500 X-Mailer: git-send-email 2.13.6 In-Reply-To: <20180114223603.19961-1-bmt@zurich.ibm.com> References: <20180114223603.19961-1-bmt@zurich.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18011422-0012-0000-0000-000005A39799 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18011422-0013-0000-0000-0000191F0363 Message-Id: <20180114223603.19961-5-bmt@zurich.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-01-14_14:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=4 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1801140321 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 Signed-off-by: Bernard Metzler --- drivers/infiniband/sw/siw/siw_obj.c | 338 ++++++++++++++++++++++++++++++++++++ drivers/infiniband/sw/siw/siw_obj.h | 200 +++++++++++++++++++++ 2 files changed, 538 insertions(+) create mode 100644 drivers/infiniband/sw/siw/siw_obj.c create mode 100644 drivers/infiniband/sw/siw/siw_obj.h diff --git a/drivers/infiniband/sw/siw/siw_obj.c b/drivers/infiniband/sw/siw/siw_obj.c new file mode 100644 index 000000000000..9ae05345dd64 --- /dev/null +++ b/drivers/infiniband/sw/siw/siw_obj.c @@ -0,0 +1,338 @@ +/* + * Software iWARP device driver + * + * Authors: Bernard Metzler + * + * Copyright (c) 2008-2017, IBM Corporation + * + * 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 + * 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. + * + * - Neither the name of IBM nor the names of its contributors may be + * used to endorse or promote products derived from this software without + * specific prior written permission. + * + * 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 +#include +#include + +#include "siw.h" +#include "siw_obj.h" +#include "siw_cm.h" + +void siw_objhdr_init(struct siw_objhdr *hdr) +{ + kref_init(&hdr->ref); +} + +void siw_idr_init(struct siw_device *sdev) +{ + spin_lock_init(&sdev->idr_lock); + + idr_init(&sdev->qp_idr); + idr_init(&sdev->cq_idr); + idr_init(&sdev->pd_idr); + idr_init(&sdev->mem_idr); +} + +void siw_idr_release(struct siw_device *sdev) +{ + idr_destroy(&sdev->qp_idr); + idr_destroy(&sdev->cq_idr); + idr_destroy(&sdev->pd_idr); + idr_destroy(&sdev->mem_idr); +} + +static int siw_add_obj(spinlock_t *lock, struct idr *idr, + struct siw_objhdr *obj) +{ + unsigned long flags; + int id, pre_id; + + do { + get_random_bytes(&pre_id, sizeof(pre_id)); + pre_id &= 0xffffff; + } while (pre_id == 0); +again: + spin_lock_irqsave(lock, flags); + id = idr_alloc(idr, obj, pre_id, 0xffffff - 1, GFP_KERNEL); + spin_unlock_irqrestore(lock, flags); + + if (id > 0) { + siw_objhdr_init(obj); + obj->id = id; + } else if (id == -ENOSPC && pre_id != 1) { + pre_id = 1; + goto again; + } else { + pr_warn("SIW: idr new object failed!\n"); + } + return id > 0 ? 0 : id; +} + +int siw_qp_add(struct siw_device *sdev, struct siw_qp *qp) +{ + int rv = siw_add_obj(&sdev->idr_lock, &sdev->qp_idr, &qp->hdr); + + if (!rv) { + qp->hdr.sdev = sdev; + siw_dbg_obj(qp, "new qp\n"); + } + return rv; +} + +int siw_cq_add(struct siw_device *sdev, struct siw_cq *cq) +{ + int rv = siw_add_obj(&sdev->idr_lock, &sdev->cq_idr, &cq->hdr); + + if (!rv) { + cq->hdr.sdev = sdev; + siw_dbg_obj(cq, "new cq\n"); + } + return rv; +} + +int siw_pd_add(struct siw_device *sdev, struct siw_pd *pd) +{ + int rv = siw_add_obj(&sdev->idr_lock, &sdev->pd_idr, &pd->hdr); + + if (!rv) { + pd->hdr.sdev = sdev; + siw_dbg_obj(pd, "new pd\n"); + } + return rv; +} + +/* + * Stag lookup is based on its index part only (24 bits). + * The code avoids special Stag of zero and tries to randomize + * STag values between 1 and SIW_STAG_MAX. + */ +int siw_mem_add(struct siw_device *sdev, struct siw_mem *m) +{ + unsigned long flags; + int id, pre_id; + + do { + get_random_bytes(&pre_id, sizeof(pre_id)); + pre_id &= 0xffffff; + } while (pre_id == 0); +again: + spin_lock_irqsave(&sdev->idr_lock, flags); + id = idr_alloc(&sdev->mem_idr, m, pre_id, SIW_STAG_MAX, GFP_KERNEL); + spin_unlock_irqrestore(&sdev->idr_lock, flags); + + if (id == -ENOSPC || id > SIW_STAG_MAX) { + if (pre_id == 1) { + pr_warn("SIW: idr new memory object failed!\n"); + return -ENOSPC; + } + pre_id = 1; + goto again; + } + siw_objhdr_init(&m->hdr); + m->hdr.id = id; + m->hdr.sdev = sdev; + + siw_dbg_obj(m, "new mem\n"); + + return 0; +} + +void siw_remove_obj(spinlock_t *lock, struct idr *idr, + struct siw_objhdr *hdr) +{ + unsigned long flags; + + spin_lock_irqsave(lock, flags); + idr_remove(idr, hdr->id); + spin_unlock_irqrestore(lock, flags); +} + +/********** routines to put objs back and free if no ref left *****/ + +void siw_free_cq(struct kref *ref) +{ + struct siw_cq *cq = + (container_of(container_of(ref, struct siw_objhdr, ref), + struct siw_cq, hdr)); + + siw_dbg_obj(cq, "free cq\n"); + + atomic_dec(&cq->hdr.sdev->num_cq); + if (cq->queue) + vfree(cq->queue); + kfree(cq); +} + +void siw_free_qp(struct kref *ref) +{ + struct siw_qp *qp = + container_of(container_of(ref, struct siw_objhdr, ref), + struct siw_qp, hdr); + struct siw_device *sdev = qp->hdr.sdev; + unsigned long flags; + + siw_dbg_obj(qp, "free qp\n"); + + if (qp->cep) + siw_cep_put(qp->cep); + + siw_remove_obj(&sdev->idr_lock, &sdev->qp_idr, &qp->hdr); + + spin_lock_irqsave(&sdev->idr_lock, flags); + list_del(&qp->devq); + spin_unlock_irqrestore(&sdev->idr_lock, flags); + + if (qp->sendq) + vfree(qp->sendq); + if (qp->recvq) + vfree(qp->recvq); + if (qp->irq) + vfree(qp->irq); + if (qp->orq) + vfree(qp->orq); + + siw_put_tx_cpu(qp->tx_cpu); + + atomic_dec(&sdev->num_qp); + kfree(qp); +} + +void siw_free_pd(struct kref *ref) +{ + struct siw_pd *pd = + container_of(container_of(ref, struct siw_objhdr, ref), + struct siw_pd, hdr); + + siw_dbg_obj(pd, "free pd\n"); + + atomic_dec(&pd->hdr.sdev->num_pd); + kfree(pd); +} + +void siw_free_mem(struct kref *ref) +{ + struct siw_mem *m; + struct siw_device *sdev; + + m = container_of(container_of(ref, struct siw_objhdr, ref), + struct siw_mem, hdr); + sdev = m->hdr.sdev; + + siw_dbg_obj(m, "free mem\n"); + + atomic_dec(&sdev->num_mr); + + if (SIW_MEM_IS_MW(m)) { + struct siw_mw *mw = container_of(m, struct siw_mw, mem); + + kfree_rcu(mw, rcu); + } else { + struct siw_mr *mr = container_of(m, struct siw_mr, mem); + unsigned long flags; + + siw_dbg(m->hdr.sdev, "[MEM %d]: has pbl: %s\n", + OBJ_ID(m), mr->mem.is_pbl ? "y" : "n"); + + if (mr->pd) + siw_pd_put(mr->pd); + + if (mr->mem_obj) { + if (mr->mem.is_pbl == 0) + siw_umem_release(mr->umem); + else + siw_pbl_free(mr->pbl); + + } + spin_lock_irqsave(&sdev->idr_lock, flags); + list_del(&mr->devq); + spin_unlock_irqrestore(&sdev->idr_lock, flags); + + kfree_rcu(mr, rcu); + } +} + +/***** routines for WQE handling ***/ + +void siw_wqe_put_mem(struct siw_wqe *wqe, enum siw_opcode op) +{ + switch (op) { + + case SIW_OP_SEND: + case SIW_OP_WRITE: + case SIW_OP_SEND_WITH_IMM: + case SIW_OP_SEND_REMOTE_INV: + case SIW_OP_READ: + case SIW_OP_READ_LOCAL_INV: + if (!(wqe->sqe.flags & SIW_WQE_INLINE)) + siw_unref_mem_sgl(wqe->mem, wqe->sqe.num_sge); + break; + + case SIW_OP_RECEIVE: + siw_unref_mem_sgl(wqe->mem, wqe->rqe.num_sge); + break; + + case SIW_OP_READ_RESPONSE: + siw_unref_mem_sgl(wqe->mem, 1); + break; + + default: + /* + * SIW_OP_INVAL_STAG and SIW_OP_REG_MR + * do not hold memory references + */ + break; + } +} + +int siw_invalidate_stag(struct siw_pd *pd, u32 stag) +{ + u32 stag_idx = stag >> 8; + struct siw_mem *mem = siw_mem_id2obj(pd->hdr.sdev, stag_idx); + int rv = 0; + + if (unlikely(!mem)) { + siw_dbg(pd->hdr.sdev, "stag %u unknown\n", stag_idx); + return -EINVAL; + } + if (unlikely(siw_mem2mr(mem)->pd != pd)) { + siw_dbg(pd->hdr.sdev, "pd mismatch for stag %u\n", stag_idx); + rv = -EACCES; + goto out; + } + /* + * Per RDMA verbs definition, an STag may already be in invalid + * state if invalidation is requested. So no state check here. + */ + mem->stag_valid = 0; + + siw_dbg(pd->hdr.sdev, "stag %u now valid\n", stag_idx); +out: + siw_mem_put(mem); + return rv; +} diff --git a/drivers/infiniband/sw/siw/siw_obj.h b/drivers/infiniband/sw/siw/siw_obj.h new file mode 100644 index 000000000000..c76f0f4d4b91 --- /dev/null +++ b/drivers/infiniband/sw/siw/siw_obj.h @@ -0,0 +1,200 @@ +/* + * Software iWARP device driver + * + * Authors: Bernard Metzler + * + * Copyright (c) 2008-2017, IBM Corporation + * + * 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 + * 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. + * + * - Neither the name of IBM nor the names of its contributors may be + * used to endorse or promote products derived from this software without + * specific prior written permission. + * + * 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. + */ + +#ifndef _SIW_OBJ_H +#define _SIW_OBJ_H + +#include +#include +#include +#include +#include + +#include + +#include "siw_debug.h" + +extern void siw_free_qp(struct kref *ref); +extern void siw_free_pd(struct kref *ref); +extern void siw_free_cq(struct kref *ref); +extern void siw_free_mem(struct kref *ref); + +static inline struct siw_device *siw_dev_base2siw(struct ib_device *base_dev) +{ + return container_of(base_dev, struct siw_device, base_dev); +} + +static inline struct siw_mr *siw_mr_base2siw(struct ib_mr *base_mr) +{ + return container_of(base_mr, struct siw_mr, base_mr); +} + +static inline void siw_cq_get(struct siw_cq *cq) +{ + kref_get(&cq->hdr.ref); + siw_dbg_obj(cq, "new refcount: %d\n", refcount_read(&cq->hdr.ref)); +} +static inline void siw_qp_get(struct siw_qp *qp) +{ + kref_get(&qp->hdr.ref); + siw_dbg_obj(qp, "new refcount: %d\n", refcount_read(&qp->hdr.ref)); +} + +static inline void siw_pd_get(struct siw_pd *pd) +{ + kref_get(&pd->hdr.ref); + siw_dbg_obj(pd, "new refcount: %d\n", refcount_read(&pd->hdr.ref)); +} + +static inline void siw_mem_get(struct siw_mem *mem) +{ + kref_get(&mem->hdr.ref); + siw_dbg_obj(mem, "new refcount: %d\n", refcount_read(&mem->hdr.ref)); +} + +static inline void siw_mem_put(struct siw_mem *mem) +{ + siw_dbg_obj(mem, "old refcount: %d\n", refcount_read(&mem->hdr.ref)); + kref_put(&mem->hdr.ref, siw_free_mem); +} + +static inline void siw_unref_mem_sgl(struct siw_mem **mem, + unsigned int num_sge) +{ + while (num_sge) { + if (*mem == NULL) + break; + + siw_mem_put(*mem); + *mem = NULL; + mem++; num_sge--; + } +} + +static inline struct siw_objhdr *siw_get_obj(struct idr *idr, int id) +{ + struct siw_objhdr *obj = idr_find(idr, id); + + if (obj) + kref_get(&obj->ref); + + return obj; +} + +static inline struct siw_cq *siw_cq_id2obj(struct siw_device *sdev, int id) +{ + struct siw_objhdr *obj = siw_get_obj(&sdev->cq_idr, id); + + if (obj) + return container_of(obj, struct siw_cq, hdr); + + return NULL; +} + +static inline struct siw_qp *siw_qp_id2obj(struct siw_device *sdev, int id) +{ + struct siw_objhdr *obj = siw_get_obj(&sdev->qp_idr, id); + + if (obj) + return container_of(obj, struct siw_qp, hdr); + + return NULL; +} + +static inline void siw_cq_put(struct siw_cq *cq) +{ + siw_dbg_obj(cq, "old refcount: %d\n", refcount_read(&cq->hdr.ref)); + kref_put(&cq->hdr.ref, siw_free_cq); +} + +static inline void siw_qp_put(struct siw_qp *qp) +{ + siw_dbg_obj(qp, "old refcount: %d\n", refcount_read(&qp->hdr.ref)); + kref_put(&qp->hdr.ref, siw_free_qp); +} + +static inline void siw_pd_put(struct siw_pd *pd) +{ + siw_dbg_obj(pd, "old refcount: %d\n", refcount_read(&pd->hdr.ref)); + kref_put(&pd->hdr.ref, siw_free_pd); +} + +/* + * siw_mem_id2obj() + * + * resolves memory from stag given by id. might be called from: + * o process context before sending out of sgl, or + * o in softirq when resolving target memory + */ +static inline struct siw_mem *siw_mem_id2obj(struct siw_device *sdev, int id) +{ + struct siw_objhdr *obj; + struct siw_mem *mem = NULL; + + rcu_read_lock(); + obj = siw_get_obj(&sdev->mem_idr, id); + rcu_read_unlock(); + + if (likely(obj)) { + mem = container_of(obj, struct siw_mem, hdr); + siw_dbg_obj(mem, "new refcount: %d\n", + refcount_read(&obj->ref)); + } + return mem; +} + +extern void siw_remove_obj(spinlock_t *lock, struct idr *idr, + struct siw_objhdr *hdr); + +extern void siw_objhdr_init(struct siw_objhdr *hdr); +extern void siw_idr_init(struct siw_device *dev); +extern void siw_idr_release(struct siw_device *dev); + +extern struct siw_cq *siw_cq_id2obj(struct siw_device *dev, int id); +extern struct siw_qp *siw_qp_id2obj(struct siw_device *dev, int id); +extern struct siw_mem *siw_mem_id2obj(struct siw_device *dev, int id); + +extern int siw_qp_add(struct siw_device *dev, struct siw_qp *qp); +extern int siw_cq_add(struct siw_device *dev, struct siw_cq *cq); +extern int siw_pd_add(struct siw_device *dev, struct siw_pd *pd); +extern int siw_mem_add(struct siw_device *dev, struct siw_mem *mem); + +extern struct siw_wqe *siw_freeq_wqe_get(struct siw_qp *qp); + +extern int siw_invalidate_stag(struct siw_pd *pd, u32 stag); +#endif