132 lines
4.5 KiB
C
132 lines
4.5 KiB
C
/*
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* IBM eServer eHCA Infiniband device driver for Linux on POWER
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*
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* mcast functions
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*
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* Authors: Khadija Souissi <souissik@de.ibm.com>
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* Waleri Fomin <fomin@de.ibm.com>
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* Reinhard Ernst <rernst@de.ibm.com>
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* Hoang-Nam Nguyen <hnguyen@de.ibm.com>
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* Heiko J Schick <schickhj@de.ibm.com>
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*
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* Copyright (c) 2005 IBM Corporation
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*
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* All rights reserved.
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*
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* This source code is distributed under a dual license of GPL v2.0 and OpenIB
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* BSD.
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*
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* OpenIB BSD License
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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 are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials
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* 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 OWNER 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, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/module.h>
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#include <linux/err.h>
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#include "ehca_classes.h"
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#include "ehca_tools.h"
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#include "ehca_qes.h"
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#include "ehca_iverbs.h"
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#include "hcp_if.h"
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#define MAX_MC_LID 0xFFFE
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#define MIN_MC_LID 0xC000 /* Multicast limits */
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#define EHCA_VALID_MULTICAST_GID(gid) ((gid)[0] == 0xFF)
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#define EHCA_VALID_MULTICAST_LID(lid) \
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(((lid) >= MIN_MC_LID) && ((lid) <= MAX_MC_LID))
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int ehca_attach_mcast(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
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{
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struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
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struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca,
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ib_device);
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union ib_gid my_gid;
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u64 subnet_prefix, interface_id, h_ret;
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if (ibqp->qp_type != IB_QPT_UD) {
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ehca_err(ibqp->device, "invalid qp_type=%x", ibqp->qp_type);
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return -EINVAL;
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}
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if (!(EHCA_VALID_MULTICAST_GID(gid->raw))) {
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ehca_err(ibqp->device, "invalid mulitcast gid");
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return -EINVAL;
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} else if ((lid < MIN_MC_LID) || (lid > MAX_MC_LID)) {
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ehca_err(ibqp->device, "invalid mulitcast lid=%x", lid);
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return -EINVAL;
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}
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memcpy(&my_gid.raw, gid->raw, sizeof(union ib_gid));
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subnet_prefix = be64_to_cpu(my_gid.global.subnet_prefix);
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interface_id = be64_to_cpu(my_gid.global.interface_id);
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h_ret = hipz_h_attach_mcqp(shca->ipz_hca_handle,
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my_qp->ipz_qp_handle,
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my_qp->galpas.kernel,
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lid, subnet_prefix, interface_id);
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if (h_ret != H_SUCCESS)
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ehca_err(ibqp->device,
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"ehca_qp=%p qp_num=%x hipz_h_attach_mcqp() failed "
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"h_ret=%lx", my_qp, ibqp->qp_num, h_ret);
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return ehca2ib_return_code(h_ret);
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}
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int ehca_detach_mcast(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
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{
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struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
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struct ehca_shca *shca = container_of(ibqp->pd->device,
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struct ehca_shca, ib_device);
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union ib_gid my_gid;
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u64 subnet_prefix, interface_id, h_ret;
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if (ibqp->qp_type != IB_QPT_UD) {
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ehca_err(ibqp->device, "invalid qp_type %x", ibqp->qp_type);
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return -EINVAL;
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}
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if (!(EHCA_VALID_MULTICAST_GID(gid->raw))) {
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ehca_err(ibqp->device, "invalid mulitcast gid");
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return -EINVAL;
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} else if ((lid < MIN_MC_LID) || (lid > MAX_MC_LID)) {
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ehca_err(ibqp->device, "invalid mulitcast lid=%x", lid);
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return -EINVAL;
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}
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memcpy(&my_gid.raw, gid->raw, sizeof(union ib_gid));
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subnet_prefix = be64_to_cpu(my_gid.global.subnet_prefix);
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interface_id = be64_to_cpu(my_gid.global.interface_id);
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h_ret = hipz_h_detach_mcqp(shca->ipz_hca_handle,
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my_qp->ipz_qp_handle,
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my_qp->galpas.kernel,
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lid, subnet_prefix, interface_id);
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if (h_ret != H_SUCCESS)
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ehca_err(ibqp->device,
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"ehca_qp=%p qp_num=%x hipz_h_detach_mcqp() failed "
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"h_ret=%lx", my_qp, ibqp->qp_num, h_ret);
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return ehca2ib_return_code(h_ret);
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}
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