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 | * adress vector functions |
| 5 | * |
| 6 | * Authors: Hoang-Nam Nguyen <hnguyen@de.ibm.com> |
| 7 | * Khadija Souissi <souissik@de.ibm.com> |
| 8 | * Reinhard Ernst <rernst@de.ibm.com> |
| 9 | * Christoph Raisch <raisch@de.ibm.com> |
| 10 | * |
| 11 | * Copyright (c) 2005 IBM Corporation |
| 12 | * |
| 13 | * All rights reserved. |
| 14 | * |
| 15 | * This source code is distributed under a dual license of GPL v2.0 and OpenIB |
| 16 | * BSD. |
| 17 | * |
| 18 | * OpenIB BSD License |
| 19 | * |
| 20 | * Redistribution and use in source and binary forms, with or without |
| 21 | * modification, are permitted provided that the following conditions are met: |
| 22 | * |
| 23 | * Redistributions of source code must retain the above copyright notice, this |
| 24 | * list of conditions and the following disclaimer. |
| 25 | * |
| 26 | * Redistributions in binary form must reproduce the above copyright notice, |
| 27 | * this list of conditions and the following disclaimer in the documentation |
| 28 | * and/or other materials |
| 29 | * provided with the distribution. |
| 30 | * |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 32 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 33 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 34 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 35 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 36 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 37 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 38 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER |
| 39 | * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 40 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGE. |
| 42 | */ |
| 43 | |
| 44 | |
| 45 | #include <asm/current.h> |
| 46 | |
| 47 | #include "ehca_tools.h" |
| 48 | #include "ehca_iverbs.h" |
| 49 | #include "hcp_if.h" |
| 50 | |
| 51 | static struct kmem_cache *av_cache; |
| 52 | |
| 53 | struct ib_ah *ehca_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) |
| 54 | { |
| 55 | int ret; |
| 56 | struct ehca_av *av; |
| 57 | struct ehca_shca *shca = container_of(pd->device, struct ehca_shca, |
| 58 | ib_device); |
| 59 | |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 60 | av = kmem_cache_alloc(av_cache, GFP_KERNEL); |
Heiko J Schick | fab9722 | 2006-09-22 15:22:22 -0700 | [diff] [blame] | 61 | if (!av) { |
| 62 | ehca_err(pd->device, "Out of memory pd=%p ah_attr=%p", |
| 63 | pd, ah_attr); |
| 64 | return ERR_PTR(-ENOMEM); |
| 65 | } |
| 66 | |
| 67 | av->av.sl = ah_attr->sl; |
| 68 | av->av.dlid = ah_attr->dlid; |
| 69 | av->av.slid_path_bits = ah_attr->src_path_bits; |
| 70 | |
| 71 | if (ehca_static_rate < 0) { |
| 72 | int ah_mult = ib_rate_to_mult(ah_attr->static_rate); |
| 73 | int ehca_mult = |
| 74 | ib_rate_to_mult(shca->sport[ah_attr->port_num].rate ); |
| 75 | |
| 76 | if (ah_mult >= ehca_mult) |
| 77 | av->av.ipd = 0; |
| 78 | else |
| 79 | av->av.ipd = (ah_mult > 0) ? |
| 80 | ((ehca_mult - 1) / ah_mult) : 0; |
| 81 | } else |
| 82 | av->av.ipd = ehca_static_rate; |
| 83 | |
| 84 | av->av.lnh = ah_attr->ah_flags; |
| 85 | av->av.grh.word_0 = EHCA_BMASK_SET(GRH_IPVERSION_MASK, 6); |
| 86 | av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_TCLASS_MASK, |
| 87 | ah_attr->grh.traffic_class); |
| 88 | av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_FLOWLABEL_MASK, |
| 89 | ah_attr->grh.flow_label); |
| 90 | av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_HOPLIMIT_MASK, |
| 91 | ah_attr->grh.hop_limit); |
| 92 | av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_NEXTHEADER_MASK, 0x1B); |
| 93 | /* set sgid in grh.word_1 */ |
| 94 | if (ah_attr->ah_flags & IB_AH_GRH) { |
| 95 | int rc; |
| 96 | struct ib_port_attr port_attr; |
| 97 | union ib_gid gid; |
| 98 | memset(&port_attr, 0, sizeof(port_attr)); |
| 99 | rc = ehca_query_port(pd->device, ah_attr->port_num, |
| 100 | &port_attr); |
| 101 | if (rc) { /* invalid port number */ |
| 102 | ret = -EINVAL; |
| 103 | ehca_err(pd->device, "Invalid port number " |
| 104 | "ehca_query_port() returned %x " |
| 105 | "pd=%p ah_attr=%p", rc, pd, ah_attr); |
| 106 | goto create_ah_exit1; |
| 107 | } |
| 108 | memset(&gid, 0, sizeof(gid)); |
| 109 | rc = ehca_query_gid(pd->device, |
| 110 | ah_attr->port_num, |
| 111 | ah_attr->grh.sgid_index, &gid); |
| 112 | if (rc) { |
| 113 | ret = -EINVAL; |
| 114 | ehca_err(pd->device, "Failed to retrieve sgid " |
| 115 | "ehca_query_gid() returned %x " |
| 116 | "pd=%p ah_attr=%p", rc, pd, ah_attr); |
| 117 | goto create_ah_exit1; |
| 118 | } |
| 119 | memcpy(&av->av.grh.word_1, &gid, sizeof(gid)); |
| 120 | } |
Hoang-Nam Nguyen | c581211 | 2006-11-05 21:42:56 +0100 | [diff] [blame] | 121 | av->av.pmtu = EHCA_MAX_MTU; |
Heiko J Schick | fab9722 | 2006-09-22 15:22:22 -0700 | [diff] [blame] | 122 | |
| 123 | /* dgid comes in grh.word_3 */ |
| 124 | memcpy(&av->av.grh.word_3, &ah_attr->grh.dgid, |
| 125 | sizeof(ah_attr->grh.dgid)); |
| 126 | |
| 127 | return &av->ib_ah; |
| 128 | |
| 129 | create_ah_exit1: |
| 130 | kmem_cache_free(av_cache, av); |
| 131 | |
| 132 | return ERR_PTR(ret); |
| 133 | } |
| 134 | |
| 135 | int ehca_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
| 136 | { |
| 137 | struct ehca_av *av; |
| 138 | struct ehca_ud_av new_ehca_av; |
| 139 | struct ehca_pd *my_pd = container_of(ah->pd, struct ehca_pd, ib_pd); |
| 140 | u32 cur_pid = current->tgid; |
| 141 | |
| 142 | if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context && |
| 143 | my_pd->ownpid != cur_pid) { |
| 144 | ehca_err(ah->device, "Invalid caller pid=%x ownpid=%x", |
| 145 | cur_pid, my_pd->ownpid); |
| 146 | return -EINVAL; |
| 147 | } |
| 148 | |
| 149 | memset(&new_ehca_av, 0, sizeof(new_ehca_av)); |
| 150 | new_ehca_av.sl = ah_attr->sl; |
| 151 | new_ehca_av.dlid = ah_attr->dlid; |
| 152 | new_ehca_av.slid_path_bits = ah_attr->src_path_bits; |
| 153 | new_ehca_av.ipd = ah_attr->static_rate; |
| 154 | new_ehca_av.lnh = EHCA_BMASK_SET(GRH_FLAG_MASK, |
| 155 | (ah_attr->ah_flags & IB_AH_GRH) > 0); |
| 156 | new_ehca_av.grh.word_0 = EHCA_BMASK_SET(GRH_TCLASS_MASK, |
| 157 | ah_attr->grh.traffic_class); |
| 158 | new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_FLOWLABEL_MASK, |
| 159 | ah_attr->grh.flow_label); |
| 160 | new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_HOPLIMIT_MASK, |
| 161 | ah_attr->grh.hop_limit); |
| 162 | new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_NEXTHEADER_MASK, 0x1b); |
| 163 | |
| 164 | /* set sgid in grh.word_1 */ |
| 165 | if (ah_attr->ah_flags & IB_AH_GRH) { |
| 166 | int rc; |
| 167 | struct ib_port_attr port_attr; |
| 168 | union ib_gid gid; |
| 169 | memset(&port_attr, 0, sizeof(port_attr)); |
| 170 | rc = ehca_query_port(ah->device, ah_attr->port_num, |
| 171 | &port_attr); |
| 172 | if (rc) { /* invalid port number */ |
| 173 | ehca_err(ah->device, "Invalid port number " |
| 174 | "ehca_query_port() returned %x " |
| 175 | "ah=%p ah_attr=%p port_num=%x", |
| 176 | rc, ah, ah_attr, ah_attr->port_num); |
| 177 | return -EINVAL; |
| 178 | } |
| 179 | memset(&gid, 0, sizeof(gid)); |
| 180 | rc = ehca_query_gid(ah->device, |
| 181 | ah_attr->port_num, |
| 182 | ah_attr->grh.sgid_index, &gid); |
| 183 | if (rc) { |
| 184 | ehca_err(ah->device, "Failed to retrieve sgid " |
| 185 | "ehca_query_gid() returned %x " |
| 186 | "ah=%p ah_attr=%p port_num=%x " |
| 187 | "sgid_index=%x", |
| 188 | rc, ah, ah_attr, ah_attr->port_num, |
| 189 | ah_attr->grh.sgid_index); |
| 190 | return -EINVAL; |
| 191 | } |
| 192 | memcpy(&new_ehca_av.grh.word_1, &gid, sizeof(gid)); |
| 193 | } |
| 194 | |
Hoang-Nam Nguyen | c581211 | 2006-11-05 21:42:56 +0100 | [diff] [blame] | 195 | new_ehca_av.pmtu = EHCA_MAX_MTU; |
Heiko J Schick | fab9722 | 2006-09-22 15:22:22 -0700 | [diff] [blame] | 196 | |
| 197 | memcpy(&new_ehca_av.grh.word_3, &ah_attr->grh.dgid, |
| 198 | sizeof(ah_attr->grh.dgid)); |
| 199 | |
| 200 | av = container_of(ah, struct ehca_av, ib_ah); |
| 201 | av->av = new_ehca_av; |
| 202 | |
| 203 | return 0; |
| 204 | } |
| 205 | |
| 206 | int ehca_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
| 207 | { |
| 208 | struct ehca_av *av = container_of(ah, struct ehca_av, ib_ah); |
| 209 | struct ehca_pd *my_pd = container_of(ah->pd, struct ehca_pd, ib_pd); |
| 210 | u32 cur_pid = current->tgid; |
| 211 | |
| 212 | if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context && |
| 213 | my_pd->ownpid != cur_pid) { |
| 214 | ehca_err(ah->device, "Invalid caller pid=%x ownpid=%x", |
| 215 | cur_pid, my_pd->ownpid); |
| 216 | return -EINVAL; |
| 217 | } |
| 218 | |
| 219 | memcpy(&ah_attr->grh.dgid, &av->av.grh.word_3, |
| 220 | sizeof(ah_attr->grh.dgid)); |
| 221 | ah_attr->sl = av->av.sl; |
| 222 | |
| 223 | ah_attr->dlid = av->av.dlid; |
| 224 | |
| 225 | ah_attr->src_path_bits = av->av.slid_path_bits; |
| 226 | ah_attr->static_rate = av->av.ipd; |
| 227 | ah_attr->ah_flags = EHCA_BMASK_GET(GRH_FLAG_MASK, av->av.lnh); |
| 228 | ah_attr->grh.traffic_class = EHCA_BMASK_GET(GRH_TCLASS_MASK, |
| 229 | av->av.grh.word_0); |
| 230 | ah_attr->grh.hop_limit = EHCA_BMASK_GET(GRH_HOPLIMIT_MASK, |
| 231 | av->av.grh.word_0); |
| 232 | ah_attr->grh.flow_label = EHCA_BMASK_GET(GRH_FLOWLABEL_MASK, |
| 233 | av->av.grh.word_0); |
| 234 | |
| 235 | return 0; |
| 236 | } |
| 237 | |
| 238 | int ehca_destroy_ah(struct ib_ah *ah) |
| 239 | { |
| 240 | struct ehca_pd *my_pd = container_of(ah->pd, struct ehca_pd, ib_pd); |
| 241 | u32 cur_pid = current->tgid; |
| 242 | |
| 243 | if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context && |
| 244 | my_pd->ownpid != cur_pid) { |
| 245 | ehca_err(ah->device, "Invalid caller pid=%x ownpid=%x", |
| 246 | cur_pid, my_pd->ownpid); |
| 247 | return -EINVAL; |
| 248 | } |
| 249 | |
| 250 | kmem_cache_free(av_cache, container_of(ah, struct ehca_av, ib_ah)); |
| 251 | |
| 252 | return 0; |
| 253 | } |
| 254 | |
| 255 | int ehca_init_av_cache(void) |
| 256 | { |
| 257 | av_cache = kmem_cache_create("ehca_cache_av", |
| 258 | sizeof(struct ehca_av), 0, |
| 259 | SLAB_HWCACHE_ALIGN, |
| 260 | NULL, NULL); |
| 261 | if (!av_cache) |
| 262 | return -ENOMEM; |
| 263 | return 0; |
| 264 | } |
| 265 | |
| 266 | void ehca_cleanup_av_cache(void) |
| 267 | { |
| 268 | if (av_cache) |
| 269 | kmem_cache_destroy(av_cache); |
| 270 | } |