forked from Minki/linux
4f8448dfe8
ib_create_ah_from_wc() doesn't create the correct return address (AH) when there is a GRH present (source & dest GIDs need to be swapped). Signed-off-by: Ralph Campbell <ralphc@pathscale.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
538 lines
12 KiB
C
538 lines
12 KiB
C
/*
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* Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
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* Copyright (c) 2004 Infinicon Corporation. All rights reserved.
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* Copyright (c) 2004 Intel Corporation. All rights reserved.
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* Copyright (c) 2004 Topspin Corporation. All rights reserved.
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* Copyright (c) 2004 Voltaire Corporation. All rights reserved.
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* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
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* Copyright (c) 2005 Cisco Systems. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* $Id: verbs.c 1349 2004-12-16 21:09:43Z roland $
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*/
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#include <linux/errno.h>
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#include <linux/err.h>
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#include <linux/string.h>
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#include <rdma/ib_verbs.h>
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#include <rdma/ib_cache.h>
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/* Protection domains */
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struct ib_pd *ib_alloc_pd(struct ib_device *device)
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{
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struct ib_pd *pd;
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pd = device->alloc_pd(device, NULL, NULL);
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if (!IS_ERR(pd)) {
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pd->device = device;
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pd->uobject = NULL;
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atomic_set(&pd->usecnt, 0);
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}
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return pd;
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}
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EXPORT_SYMBOL(ib_alloc_pd);
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int ib_dealloc_pd(struct ib_pd *pd)
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{
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if (atomic_read(&pd->usecnt))
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return -EBUSY;
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return pd->device->dealloc_pd(pd);
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}
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EXPORT_SYMBOL(ib_dealloc_pd);
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/* Address handles */
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struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
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{
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struct ib_ah *ah;
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ah = pd->device->create_ah(pd, ah_attr);
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if (!IS_ERR(ah)) {
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ah->device = pd->device;
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ah->pd = pd;
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ah->uobject = NULL;
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atomic_inc(&pd->usecnt);
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}
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return ah;
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}
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EXPORT_SYMBOL(ib_create_ah);
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struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
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struct ib_grh *grh, u8 port_num)
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{
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struct ib_ah_attr ah_attr;
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u32 flow_class;
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u16 gid_index;
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int ret;
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memset(&ah_attr, 0, sizeof ah_attr);
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ah_attr.dlid = wc->slid;
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ah_attr.sl = wc->sl;
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ah_attr.src_path_bits = wc->dlid_path_bits;
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ah_attr.port_num = port_num;
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if (wc->wc_flags & IB_WC_GRH) {
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ah_attr.ah_flags = IB_AH_GRH;
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ah_attr.grh.dgid = grh->sgid;
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ret = ib_find_cached_gid(pd->device, &grh->dgid, &port_num,
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&gid_index);
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if (ret)
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return ERR_PTR(ret);
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ah_attr.grh.sgid_index = (u8) gid_index;
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flow_class = be32_to_cpu(grh->version_tclass_flow);
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ah_attr.grh.flow_label = flow_class & 0xFFFFF;
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ah_attr.grh.traffic_class = (flow_class >> 20) & 0xFF;
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ah_attr.grh.hop_limit = grh->hop_limit;
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}
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return ib_create_ah(pd, &ah_attr);
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}
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EXPORT_SYMBOL(ib_create_ah_from_wc);
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int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
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{
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return ah->device->modify_ah ?
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ah->device->modify_ah(ah, ah_attr) :
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-ENOSYS;
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}
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EXPORT_SYMBOL(ib_modify_ah);
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int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
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{
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return ah->device->query_ah ?
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ah->device->query_ah(ah, ah_attr) :
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-ENOSYS;
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}
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EXPORT_SYMBOL(ib_query_ah);
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int ib_destroy_ah(struct ib_ah *ah)
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{
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struct ib_pd *pd;
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int ret;
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pd = ah->pd;
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ret = ah->device->destroy_ah(ah);
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if (!ret)
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atomic_dec(&pd->usecnt);
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return ret;
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}
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EXPORT_SYMBOL(ib_destroy_ah);
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/* Shared receive queues */
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struct ib_srq *ib_create_srq(struct ib_pd *pd,
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struct ib_srq_init_attr *srq_init_attr)
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{
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struct ib_srq *srq;
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if (!pd->device->create_srq)
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return ERR_PTR(-ENOSYS);
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srq = pd->device->create_srq(pd, srq_init_attr, NULL);
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if (!IS_ERR(srq)) {
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srq->device = pd->device;
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srq->pd = pd;
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srq->uobject = NULL;
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srq->event_handler = srq_init_attr->event_handler;
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srq->srq_context = srq_init_attr->srq_context;
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atomic_inc(&pd->usecnt);
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atomic_set(&srq->usecnt, 0);
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}
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return srq;
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}
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EXPORT_SYMBOL(ib_create_srq);
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int ib_modify_srq(struct ib_srq *srq,
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struct ib_srq_attr *srq_attr,
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enum ib_srq_attr_mask srq_attr_mask)
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{
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return srq->device->modify_srq(srq, srq_attr, srq_attr_mask);
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}
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EXPORT_SYMBOL(ib_modify_srq);
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int ib_query_srq(struct ib_srq *srq,
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struct ib_srq_attr *srq_attr)
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{
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return srq->device->query_srq ?
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srq->device->query_srq(srq, srq_attr) : -ENOSYS;
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}
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EXPORT_SYMBOL(ib_query_srq);
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int ib_destroy_srq(struct ib_srq *srq)
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{
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struct ib_pd *pd;
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int ret;
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if (atomic_read(&srq->usecnt))
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return -EBUSY;
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pd = srq->pd;
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ret = srq->device->destroy_srq(srq);
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if (!ret)
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atomic_dec(&pd->usecnt);
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return ret;
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}
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EXPORT_SYMBOL(ib_destroy_srq);
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/* Queue pairs */
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struct ib_qp *ib_create_qp(struct ib_pd *pd,
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struct ib_qp_init_attr *qp_init_attr)
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{
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struct ib_qp *qp;
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qp = pd->device->create_qp(pd, qp_init_attr, NULL);
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if (!IS_ERR(qp)) {
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qp->device = pd->device;
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qp->pd = pd;
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qp->send_cq = qp_init_attr->send_cq;
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qp->recv_cq = qp_init_attr->recv_cq;
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qp->srq = qp_init_attr->srq;
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qp->uobject = NULL;
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qp->event_handler = qp_init_attr->event_handler;
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qp->qp_context = qp_init_attr->qp_context;
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qp->qp_type = qp_init_attr->qp_type;
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atomic_inc(&pd->usecnt);
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atomic_inc(&qp_init_attr->send_cq->usecnt);
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atomic_inc(&qp_init_attr->recv_cq->usecnt);
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if (qp_init_attr->srq)
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atomic_inc(&qp_init_attr->srq->usecnt);
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}
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return qp;
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}
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EXPORT_SYMBOL(ib_create_qp);
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int ib_modify_qp(struct ib_qp *qp,
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struct ib_qp_attr *qp_attr,
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int qp_attr_mask)
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{
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return qp->device->modify_qp(qp, qp_attr, qp_attr_mask);
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}
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EXPORT_SYMBOL(ib_modify_qp);
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int ib_query_qp(struct ib_qp *qp,
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struct ib_qp_attr *qp_attr,
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int qp_attr_mask,
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struct ib_qp_init_attr *qp_init_attr)
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{
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return qp->device->query_qp ?
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qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) :
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-ENOSYS;
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}
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EXPORT_SYMBOL(ib_query_qp);
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int ib_destroy_qp(struct ib_qp *qp)
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{
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struct ib_pd *pd;
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struct ib_cq *scq, *rcq;
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struct ib_srq *srq;
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int ret;
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pd = qp->pd;
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scq = qp->send_cq;
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rcq = qp->recv_cq;
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srq = qp->srq;
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ret = qp->device->destroy_qp(qp);
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if (!ret) {
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atomic_dec(&pd->usecnt);
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atomic_dec(&scq->usecnt);
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atomic_dec(&rcq->usecnt);
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if (srq)
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atomic_dec(&srq->usecnt);
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}
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return ret;
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}
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EXPORT_SYMBOL(ib_destroy_qp);
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/* Completion queues */
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struct ib_cq *ib_create_cq(struct ib_device *device,
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ib_comp_handler comp_handler,
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void (*event_handler)(struct ib_event *, void *),
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void *cq_context, int cqe)
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{
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struct ib_cq *cq;
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cq = device->create_cq(device, cqe, NULL, NULL);
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if (!IS_ERR(cq)) {
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cq->device = device;
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cq->uobject = NULL;
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cq->comp_handler = comp_handler;
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cq->event_handler = event_handler;
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cq->cq_context = cq_context;
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atomic_set(&cq->usecnt, 0);
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}
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return cq;
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}
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EXPORT_SYMBOL(ib_create_cq);
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int ib_destroy_cq(struct ib_cq *cq)
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{
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if (atomic_read(&cq->usecnt))
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return -EBUSY;
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return cq->device->destroy_cq(cq);
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}
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EXPORT_SYMBOL(ib_destroy_cq);
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int ib_resize_cq(struct ib_cq *cq,
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int cqe)
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{
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return cq->device->resize_cq ?
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cq->device->resize_cq(cq, cqe) : -ENOSYS;
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}
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EXPORT_SYMBOL(ib_resize_cq);
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/* Memory regions */
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struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
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{
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struct ib_mr *mr;
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mr = pd->device->get_dma_mr(pd, mr_access_flags);
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if (!IS_ERR(mr)) {
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mr->device = pd->device;
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mr->pd = pd;
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mr->uobject = NULL;
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atomic_inc(&pd->usecnt);
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atomic_set(&mr->usecnt, 0);
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}
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return mr;
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}
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EXPORT_SYMBOL(ib_get_dma_mr);
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struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
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struct ib_phys_buf *phys_buf_array,
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int num_phys_buf,
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int mr_access_flags,
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u64 *iova_start)
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{
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struct ib_mr *mr;
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mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf,
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mr_access_flags, iova_start);
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if (!IS_ERR(mr)) {
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mr->device = pd->device;
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mr->pd = pd;
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mr->uobject = NULL;
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atomic_inc(&pd->usecnt);
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atomic_set(&mr->usecnt, 0);
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}
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return mr;
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}
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EXPORT_SYMBOL(ib_reg_phys_mr);
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int ib_rereg_phys_mr(struct ib_mr *mr,
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int mr_rereg_mask,
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struct ib_pd *pd,
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struct ib_phys_buf *phys_buf_array,
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int num_phys_buf,
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int mr_access_flags,
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u64 *iova_start)
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{
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struct ib_pd *old_pd;
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int ret;
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if (!mr->device->rereg_phys_mr)
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return -ENOSYS;
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if (atomic_read(&mr->usecnt))
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return -EBUSY;
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old_pd = mr->pd;
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ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd,
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phys_buf_array, num_phys_buf,
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mr_access_flags, iova_start);
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if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) {
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atomic_dec(&old_pd->usecnt);
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atomic_inc(&pd->usecnt);
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}
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return ret;
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}
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EXPORT_SYMBOL(ib_rereg_phys_mr);
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int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
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{
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return mr->device->query_mr ?
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mr->device->query_mr(mr, mr_attr) : -ENOSYS;
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}
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EXPORT_SYMBOL(ib_query_mr);
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int ib_dereg_mr(struct ib_mr *mr)
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{
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struct ib_pd *pd;
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int ret;
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if (atomic_read(&mr->usecnt))
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return -EBUSY;
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pd = mr->pd;
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ret = mr->device->dereg_mr(mr);
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if (!ret)
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atomic_dec(&pd->usecnt);
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return ret;
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}
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EXPORT_SYMBOL(ib_dereg_mr);
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/* Memory windows */
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struct ib_mw *ib_alloc_mw(struct ib_pd *pd)
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{
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struct ib_mw *mw;
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if (!pd->device->alloc_mw)
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return ERR_PTR(-ENOSYS);
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mw = pd->device->alloc_mw(pd);
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if (!IS_ERR(mw)) {
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mw->device = pd->device;
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mw->pd = pd;
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mw->uobject = NULL;
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atomic_inc(&pd->usecnt);
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}
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return mw;
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}
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EXPORT_SYMBOL(ib_alloc_mw);
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int ib_dealloc_mw(struct ib_mw *mw)
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{
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struct ib_pd *pd;
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int ret;
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pd = mw->pd;
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ret = mw->device->dealloc_mw(mw);
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if (!ret)
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atomic_dec(&pd->usecnt);
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return ret;
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}
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EXPORT_SYMBOL(ib_dealloc_mw);
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/* "Fast" memory regions */
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struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
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int mr_access_flags,
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struct ib_fmr_attr *fmr_attr)
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{
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struct ib_fmr *fmr;
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if (!pd->device->alloc_fmr)
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return ERR_PTR(-ENOSYS);
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fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr);
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if (!IS_ERR(fmr)) {
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fmr->device = pd->device;
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fmr->pd = pd;
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atomic_inc(&pd->usecnt);
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}
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return fmr;
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}
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EXPORT_SYMBOL(ib_alloc_fmr);
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int ib_unmap_fmr(struct list_head *fmr_list)
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{
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struct ib_fmr *fmr;
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if (list_empty(fmr_list))
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return 0;
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fmr = list_entry(fmr_list->next, struct ib_fmr, list);
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return fmr->device->unmap_fmr(fmr_list);
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}
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EXPORT_SYMBOL(ib_unmap_fmr);
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int ib_dealloc_fmr(struct ib_fmr *fmr)
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{
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struct ib_pd *pd;
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int ret;
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pd = fmr->pd;
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ret = fmr->device->dealloc_fmr(fmr);
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if (!ret)
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atomic_dec(&pd->usecnt);
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return ret;
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}
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EXPORT_SYMBOL(ib_dealloc_fmr);
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/* Multicast groups */
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int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
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{
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if (!qp->device->attach_mcast)
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return -ENOSYS;
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if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
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return -EINVAL;
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return qp->device->attach_mcast(qp, gid, lid);
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}
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EXPORT_SYMBOL(ib_attach_mcast);
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int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
|
|
{
|
|
if (!qp->device->detach_mcast)
|
|
return -ENOSYS;
|
|
if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
|
|
return -EINVAL;
|
|
|
|
return qp->device->detach_mcast(qp, gid, lid);
|
|
}
|
|
EXPORT_SYMBOL(ib_detach_mcast);
|