Heiko J Schick | fab9722 | 2006-09-22 15:22:22 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * IBM eServer eHCA Infiniband device driver for Linux on POWER |
| 3 | * |
| 4 | * mcast functions |
| 5 | * |
| 6 | * Authors: Khadija Souissi <souissik@de.ibm.com> |
| 7 | * Waleri Fomin <fomin@de.ibm.com> |
| 8 | * Reinhard Ernst <rernst@de.ibm.com> |
| 9 | * Hoang-Nam Nguyen <hnguyen@de.ibm.com> |
| 10 | * Heiko J Schick <schickhj@de.ibm.com> |
| 11 | * |
| 12 | * Copyright (c) 2005 IBM Corporation |
| 13 | * |
| 14 | * All rights reserved. |
| 15 | * |
| 16 | * This source code is distributed under a dual license of GPL v2.0 and OpenIB |
| 17 | * BSD. |
| 18 | * |
| 19 | * OpenIB BSD License |
| 20 | * |
| 21 | * Redistribution and use in source and binary forms, with or without |
| 22 | * modification, are permitted provided that the following conditions are met: |
| 23 | * |
| 24 | * Redistributions of source code must retain the above copyright notice, this |
| 25 | * list of conditions and the following disclaimer. |
| 26 | * |
| 27 | * Redistributions in binary form must reproduce the above copyright notice, |
| 28 | * this list of conditions and the following disclaimer in the documentation |
| 29 | * and/or other materials |
| 30 | * provided with the distribution. |
| 31 | * |
| 32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 33 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 34 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 35 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 36 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 37 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 38 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 39 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER |
| 40 | * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 41 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 42 | * POSSIBILITY OF SUCH DAMAGE. |
| 43 | */ |
| 44 | |
| 45 | #include <linux/module.h> |
| 46 | #include <linux/err.h> |
| 47 | #include "ehca_classes.h" |
| 48 | #include "ehca_tools.h" |
| 49 | #include "ehca_qes.h" |
| 50 | #include "ehca_iverbs.h" |
| 51 | #include "hcp_if.h" |
| 52 | |
| 53 | #define MAX_MC_LID 0xFFFE |
| 54 | #define MIN_MC_LID 0xC000 /* Multicast limits */ |
| 55 | #define EHCA_VALID_MULTICAST_GID(gid) ((gid)[0] == 0xFF) |
| 56 | #define EHCA_VALID_MULTICAST_LID(lid) \ |
| 57 | (((lid) >= MIN_MC_LID) && ((lid) <= MAX_MC_LID)) |
| 58 | |
| 59 | int ehca_attach_mcast(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) |
| 60 | { |
| 61 | struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp); |
| 62 | struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca, |
| 63 | ib_device); |
| 64 | union ib_gid my_gid; |
| 65 | u64 subnet_prefix, interface_id, h_ret; |
| 66 | |
| 67 | if (ibqp->qp_type != IB_QPT_UD) { |
| 68 | ehca_err(ibqp->device, "invalid qp_type=%x", ibqp->qp_type); |
| 69 | return -EINVAL; |
| 70 | } |
| 71 | |
| 72 | if (!(EHCA_VALID_MULTICAST_GID(gid->raw))) { |
| 73 | ehca_err(ibqp->device, "invalid mulitcast gid"); |
| 74 | return -EINVAL; |
| 75 | } else if ((lid < MIN_MC_LID) || (lid > MAX_MC_LID)) { |
| 76 | ehca_err(ibqp->device, "invalid mulitcast lid=%x", lid); |
| 77 | return -EINVAL; |
| 78 | } |
| 79 | |
| 80 | memcpy(&my_gid.raw, gid->raw, sizeof(union ib_gid)); |
| 81 | |
| 82 | subnet_prefix = be64_to_cpu(my_gid.global.subnet_prefix); |
| 83 | interface_id = be64_to_cpu(my_gid.global.interface_id); |
| 84 | h_ret = hipz_h_attach_mcqp(shca->ipz_hca_handle, |
| 85 | my_qp->ipz_qp_handle, |
| 86 | my_qp->galpas.kernel, |
| 87 | lid, subnet_prefix, interface_id); |
| 88 | if (h_ret != H_SUCCESS) |
| 89 | ehca_err(ibqp->device, |
| 90 | "ehca_qp=%p qp_num=%x hipz_h_attach_mcqp() failed " |
| 91 | "h_ret=%lx", my_qp, ibqp->qp_num, h_ret); |
| 92 | |
| 93 | return ehca2ib_return_code(h_ret); |
| 94 | } |
| 95 | |
| 96 | int ehca_detach_mcast(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) |
| 97 | { |
| 98 | struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp); |
| 99 | struct ehca_shca *shca = container_of(ibqp->pd->device, |
| 100 | struct ehca_shca, ib_device); |
| 101 | union ib_gid my_gid; |
| 102 | u64 subnet_prefix, interface_id, h_ret; |
| 103 | |
| 104 | if (ibqp->qp_type != IB_QPT_UD) { |
| 105 | ehca_err(ibqp->device, "invalid qp_type %x", ibqp->qp_type); |
| 106 | return -EINVAL; |
| 107 | } |
| 108 | |
| 109 | if (!(EHCA_VALID_MULTICAST_GID(gid->raw))) { |
| 110 | ehca_err(ibqp->device, "invalid mulitcast gid"); |
| 111 | return -EINVAL; |
| 112 | } else if ((lid < MIN_MC_LID) || (lid > MAX_MC_LID)) { |
| 113 | ehca_err(ibqp->device, "invalid mulitcast lid=%x", lid); |
| 114 | return -EINVAL; |
| 115 | } |
| 116 | |
| 117 | memcpy(&my_gid.raw, gid->raw, sizeof(union ib_gid)); |
| 118 | |
| 119 | subnet_prefix = be64_to_cpu(my_gid.global.subnet_prefix); |
| 120 | interface_id = be64_to_cpu(my_gid.global.interface_id); |
| 121 | h_ret = hipz_h_detach_mcqp(shca->ipz_hca_handle, |
| 122 | my_qp->ipz_qp_handle, |
| 123 | my_qp->galpas.kernel, |
| 124 | lid, subnet_prefix, interface_id); |
| 125 | if (h_ret != H_SUCCESS) |
| 126 | ehca_err(ibqp->device, |
| 127 | "ehca_qp=%p qp_num=%x hipz_h_detach_mcqp() failed " |
| 128 | "h_ret=%lx", my_qp, ibqp->qp_num, h_ret); |
| 129 | |
| 130 | return ehca2ib_return_code(h_ret); |
| 131 | } |