91a7c58fce
The IB verbs objects are counted by the kernel and ib_core ensures that
deallocate PD will success so it will be called once all other objects
that depends on PD will be released. This is achieved by managing various
reference counters on such objects.
The mlx5 driver didn't follow this standard flow when allowed DEVX objects
that are not managed by ib_core to be interleaved with the ones under
ib_core responsibility.
In such interleaved scenarios deallocate command can fail and ib_core will
leave uobject in internal DB and attempt to clean it later to free
resources anyway.
This change partially restores returned value from dealloc_pd() for all
drivers, but keeping in mind that non-DEVX devices and kernel verbs paths
shouldn't fail.
Fixes: 21a428a019c9 ("RDMA: Handle PD allocations by IB/core")
Link: https://lore.kernel.org/r/20200907120921.476363-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
109 lines
4.7 KiB
C
109 lines
4.7 KiB
C
/* This file is part of the Emulex RoCE Device Driver for
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* RoCE (RDMA over Converged Ethernet) adapters.
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* Copyright (C) 2012-2015 Emulex. All rights reserved.
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* EMULEX and SLI are trademarks of Emulex.
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* www.emulex.com
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*
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* This software is available to you under a choice of one of two licenses.
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* You may choose to be licensed under the terms of the GNU General Public
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* License (GPL) Version 2, available from the file COPYING in the main
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* directory of this source tree, or the BSD license below:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Contact Information:
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* linux-drivers@emulex.com
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*
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* Emulex
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* 3333 Susan Street
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* Costa Mesa, CA 92626
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*/
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#ifndef __OCRDMA_VERBS_H__
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#define __OCRDMA_VERBS_H__
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int ocrdma_post_send(struct ib_qp *, const struct ib_send_wr *,
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const struct ib_send_wr **bad_wr);
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int ocrdma_post_recv(struct ib_qp *, const struct ib_recv_wr *,
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const struct ib_recv_wr **bad_wr);
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int ocrdma_poll_cq(struct ib_cq *, int num_entries, struct ib_wc *wc);
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int ocrdma_arm_cq(struct ib_cq *, enum ib_cq_notify_flags flags);
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int ocrdma_query_device(struct ib_device *, struct ib_device_attr *props,
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struct ib_udata *uhw);
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int ocrdma_query_port(struct ib_device *, u8 port, struct ib_port_attr *props);
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enum rdma_protocol_type
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ocrdma_query_protocol(struct ib_device *device, u8 port_num);
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void ocrdma_get_guid(struct ocrdma_dev *, u8 *guid);
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int ocrdma_query_pkey(struct ib_device *, u8 port, u16 index, u16 *pkey);
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int ocrdma_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata);
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void ocrdma_dealloc_ucontext(struct ib_ucontext *uctx);
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int ocrdma_mmap(struct ib_ucontext *, struct vm_area_struct *vma);
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int ocrdma_alloc_pd(struct ib_pd *pd, struct ib_udata *udata);
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int ocrdma_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata);
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int ocrdma_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
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struct ib_udata *udata);
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int ocrdma_resize_cq(struct ib_cq *, int cqe, struct ib_udata *);
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void ocrdma_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata);
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struct ib_qp *ocrdma_create_qp(struct ib_pd *,
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struct ib_qp_init_attr *attrs,
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struct ib_udata *);
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int _ocrdma_modify_qp(struct ib_qp *, struct ib_qp_attr *attr,
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int attr_mask);
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int ocrdma_modify_qp(struct ib_qp *, struct ib_qp_attr *attr,
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int attr_mask, struct ib_udata *udata);
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int ocrdma_query_qp(struct ib_qp *,
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struct ib_qp_attr *qp_attr,
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int qp_attr_mask, struct ib_qp_init_attr *);
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int ocrdma_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata);
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void ocrdma_del_flush_qp(struct ocrdma_qp *qp);
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int ocrdma_create_srq(struct ib_srq *srq, struct ib_srq_init_attr *attr,
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struct ib_udata *udata);
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int ocrdma_modify_srq(struct ib_srq *, struct ib_srq_attr *,
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enum ib_srq_attr_mask, struct ib_udata *);
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int ocrdma_query_srq(struct ib_srq *, struct ib_srq_attr *);
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void ocrdma_destroy_srq(struct ib_srq *ibsrq, struct ib_udata *udata);
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int ocrdma_post_srq_recv(struct ib_srq *, const struct ib_recv_wr *,
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const struct ib_recv_wr **bad_recv_wr);
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int ocrdma_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata);
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struct ib_mr *ocrdma_get_dma_mr(struct ib_pd *, int acc);
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struct ib_mr *ocrdma_reg_user_mr(struct ib_pd *, u64 start, u64 length,
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u64 virt, int acc, struct ib_udata *);
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struct ib_mr *ocrdma_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
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u32 max_num_sg);
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int ocrdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
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unsigned int *sg_offset);
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#endif /* __OCRDMA_VERBS_H__ */
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