1 /* 2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <linux/mlx5/cmd.h> 34 #include <rdma/ib_mad.h> 35 #include <rdma/ib_smi.h> 36 #include "mlx5_ib.h" 37 38 enum { 39 MLX5_IB_VENDOR_CLASS1 = 0x9, 40 MLX5_IB_VENDOR_CLASS2 = 0xa 41 }; 42 43 int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey, 44 u8 port, const struct ib_wc *in_wc, const struct ib_grh *in_grh, 45 const void *in_mad, void *response_mad) 46 { 47 u8 op_modifier = 0; 48 49 /* Key check traps can't be generated unless we have in_wc to 50 * tell us where to send the trap. 51 */ 52 if (ignore_mkey || !in_wc) 53 op_modifier |= 0x1; 54 if (ignore_bkey || !in_wc) 55 op_modifier |= 0x2; 56 57 return mlx5_core_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier, port); 58 } 59 60 int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 61 const struct ib_wc *in_wc, const struct ib_grh *in_grh, 62 const struct ib_mad_hdr *in, size_t in_mad_size, 63 struct ib_mad_hdr *out, size_t *out_mad_size, 64 u16 *out_mad_pkey_index) 65 { 66 u16 slid; 67 int err; 68 const struct ib_mad *in_mad = (const struct ib_mad *)in; 69 struct ib_mad *out_mad = (struct ib_mad *)out; 70 71 if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) || 72 *out_mad_size != sizeof(*out_mad))) 73 return IB_MAD_RESULT_FAILURE; 74 75 slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE); 76 77 if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0) 78 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 79 80 if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || 81 in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { 82 if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && 83 in_mad->mad_hdr.method != IB_MGMT_METHOD_SET && 84 in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS) 85 return IB_MAD_RESULT_SUCCESS; 86 87 /* Don't process SMInfo queries -- the SMA can't handle them. 88 */ 89 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO) 90 return IB_MAD_RESULT_SUCCESS; 91 } else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT || 92 in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS1 || 93 in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS2 || 94 in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) { 95 if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && 96 in_mad->mad_hdr.method != IB_MGMT_METHOD_SET) 97 return IB_MAD_RESULT_SUCCESS; 98 } else { 99 return IB_MAD_RESULT_SUCCESS; 100 } 101 102 err = mlx5_MAD_IFC(to_mdev(ibdev), 103 mad_flags & IB_MAD_IGNORE_MKEY, 104 mad_flags & IB_MAD_IGNORE_BKEY, 105 port_num, in_wc, in_grh, in_mad, out_mad); 106 if (err) 107 return IB_MAD_RESULT_FAILURE; 108 109 /* set return bit in status of directed route responses */ 110 if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) 111 out_mad->mad_hdr.status |= cpu_to_be16(1 << 15); 112 113 if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS) 114 /* no response for trap repress */ 115 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 116 117 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 118 } 119 120 int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port) 121 { 122 struct ib_smp *in_mad = NULL; 123 struct ib_smp *out_mad = NULL; 124 int err = -ENOMEM; 125 u16 packet_error; 126 127 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 128 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 129 if (!in_mad || !out_mad) 130 goto out; 131 132 init_query_mad(in_mad); 133 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; 134 in_mad->attr_mod = cpu_to_be32(port); 135 136 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 137 138 packet_error = be16_to_cpu(out_mad->status); 139 140 dev->mdev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ? 141 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0; 142 143 out: 144 kfree(in_mad); 145 kfree(out_mad); 146 return err; 147 } 148 149 int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev, 150 struct ib_smp *out_mad) 151 { 152 struct ib_smp *in_mad = NULL; 153 int err = -ENOMEM; 154 155 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 156 if (!in_mad) 157 return -ENOMEM; 158 159 init_query_mad(in_mad); 160 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 161 162 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, 163 out_mad); 164 165 kfree(in_mad); 166 return err; 167 } 168 169 int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev, 170 __be64 *sys_image_guid) 171 { 172 struct ib_smp *out_mad = NULL; 173 int err = -ENOMEM; 174 175 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 176 if (!out_mad) 177 return -ENOMEM; 178 179 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad); 180 if (err) 181 goto out; 182 183 memcpy(sys_image_guid, out_mad->data + 4, 8); 184 185 out: 186 kfree(out_mad); 187 188 return err; 189 } 190 191 int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev, 192 u16 *max_pkeys) 193 { 194 struct ib_smp *out_mad = NULL; 195 int err = -ENOMEM; 196 197 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 198 if (!out_mad) 199 return -ENOMEM; 200 201 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad); 202 if (err) 203 goto out; 204 205 *max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28)); 206 207 out: 208 kfree(out_mad); 209 210 return err; 211 } 212 213 int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev, 214 u32 *vendor_id) 215 { 216 struct ib_smp *out_mad = NULL; 217 int err = -ENOMEM; 218 219 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 220 if (!out_mad) 221 return -ENOMEM; 222 223 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad); 224 if (err) 225 goto out; 226 227 *vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff; 228 229 out: 230 kfree(out_mad); 231 232 return err; 233 } 234 235 int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc) 236 { 237 struct ib_smp *in_mad = NULL; 238 struct ib_smp *out_mad = NULL; 239 int err = -ENOMEM; 240 241 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 242 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 243 if (!in_mad || !out_mad) 244 goto out; 245 246 init_query_mad(in_mad); 247 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 248 249 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 250 if (err) 251 goto out; 252 253 memcpy(node_desc, out_mad->data, 64); 254 out: 255 kfree(in_mad); 256 kfree(out_mad); 257 return err; 258 } 259 260 int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid) 261 { 262 struct ib_smp *in_mad = NULL; 263 struct ib_smp *out_mad = NULL; 264 int err = -ENOMEM; 265 266 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 267 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 268 if (!in_mad || !out_mad) 269 goto out; 270 271 init_query_mad(in_mad); 272 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 273 274 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 275 if (err) 276 goto out; 277 278 memcpy(node_guid, out_mad->data + 12, 8); 279 out: 280 kfree(in_mad); 281 kfree(out_mad); 282 return err; 283 } 284 285 int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u8 port, u16 index, 286 u16 *pkey) 287 { 288 struct ib_smp *in_mad = NULL; 289 struct ib_smp *out_mad = NULL; 290 int err = -ENOMEM; 291 292 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 293 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 294 if (!in_mad || !out_mad) 295 goto out; 296 297 init_query_mad(in_mad); 298 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 299 in_mad->attr_mod = cpu_to_be32(index / 32); 300 301 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, 302 out_mad); 303 if (err) 304 goto out; 305 306 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]); 307 308 out: 309 kfree(in_mad); 310 kfree(out_mad); 311 return err; 312 } 313 314 int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index, 315 union ib_gid *gid) 316 { 317 struct ib_smp *in_mad = NULL; 318 struct ib_smp *out_mad = NULL; 319 int err = -ENOMEM; 320 321 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 322 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 323 if (!in_mad || !out_mad) 324 goto out; 325 326 init_query_mad(in_mad); 327 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 328 in_mad->attr_mod = cpu_to_be32(port); 329 330 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, 331 out_mad); 332 if (err) 333 goto out; 334 335 memcpy(gid->raw, out_mad->data + 8, 8); 336 337 init_query_mad(in_mad); 338 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 339 in_mad->attr_mod = cpu_to_be32(index / 8); 340 341 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, 342 out_mad); 343 if (err) 344 goto out; 345 346 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 347 348 out: 349 kfree(in_mad); 350 kfree(out_mad); 351 return err; 352 } 353 354 int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port, 355 struct ib_port_attr *props) 356 { 357 struct mlx5_ib_dev *dev = to_mdev(ibdev); 358 struct mlx5_core_dev *mdev = dev->mdev; 359 struct ib_smp *in_mad = NULL; 360 struct ib_smp *out_mad = NULL; 361 int ext_active_speed; 362 int err = -ENOMEM; 363 364 if (port < 1 || port > MLX5_CAP_GEN(mdev, num_ports)) { 365 mlx5_ib_warn(dev, "invalid port number %d\n", port); 366 return -EINVAL; 367 } 368 369 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 370 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 371 if (!in_mad || !out_mad) 372 goto out; 373 374 memset(props, 0, sizeof(*props)); 375 376 init_query_mad(in_mad); 377 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 378 in_mad->attr_mod = cpu_to_be32(port); 379 380 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad); 381 if (err) { 382 mlx5_ib_warn(dev, "err %d\n", err); 383 goto out; 384 } 385 386 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16)); 387 props->lmc = out_mad->data[34] & 0x7; 388 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18)); 389 props->sm_sl = out_mad->data[36] & 0xf; 390 props->state = out_mad->data[32] & 0xf; 391 props->phys_state = out_mad->data[33] >> 4; 392 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20)); 393 props->gid_tbl_len = out_mad->data[50]; 394 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg); 395 props->pkey_tbl_len = mdev->port_caps[port - 1].pkey_table_len; 396 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46)); 397 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48)); 398 props->active_width = out_mad->data[31] & 0xf; 399 props->active_speed = out_mad->data[35] >> 4; 400 props->max_mtu = out_mad->data[41] & 0xf; 401 props->active_mtu = out_mad->data[36] >> 4; 402 props->subnet_timeout = out_mad->data[51] & 0x1f; 403 props->max_vl_num = out_mad->data[37] >> 4; 404 props->init_type_reply = out_mad->data[41] >> 4; 405 406 /* Check if extended speeds (EDR/FDR/...) are supported */ 407 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 408 ext_active_speed = out_mad->data[62] >> 4; 409 410 switch (ext_active_speed) { 411 case 1: 412 props->active_speed = 16; /* FDR */ 413 break; 414 case 2: 415 props->active_speed = 32; /* EDR */ 416 break; 417 } 418 } 419 420 /* If reported active speed is QDR, check if is FDR-10 */ 421 if (props->active_speed == 4) { 422 if (mdev->port_caps[port - 1].ext_port_cap & 423 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) { 424 init_query_mad(in_mad); 425 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; 426 in_mad->attr_mod = cpu_to_be32(port); 427 428 err = mlx5_MAD_IFC(dev, 1, 1, port, 429 NULL, NULL, in_mad, out_mad); 430 if (err) 431 goto out; 432 433 /* Checking LinkSpeedActive for FDR-10 */ 434 if (out_mad->data[15] & 0x1) 435 props->active_speed = 8; 436 } 437 } 438 439 out: 440 kfree(in_mad); 441 kfree(out_mad); 442 443 return err; 444 } 445