1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB 2 /* 3 * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved. 4 */ 5 6 #include <rdma/ib_user_verbs.h> 7 #include <rdma/ib_verbs.h> 8 #include <rdma/uverbs_types.h> 9 #include <rdma/uverbs_ioctl.h> 10 #include <rdma/mlx5_user_ioctl_cmds.h> 11 #include <rdma/mlx5_user_ioctl_verbs.h> 12 #include <rdma/ib_umem.h> 13 #include <rdma/uverbs_std_types.h> 14 #include <linux/mlx5/driver.h> 15 #include <linux/mlx5/fs.h> 16 #include "mlx5_ib.h" 17 #include "devx.h" 18 #include "qp.h" 19 #include <linux/xarray.h> 20 21 #define UVERBS_MODULE_NAME mlx5_ib 22 #include <rdma/uverbs_named_ioctl.h> 23 24 static void dispatch_event_fd(struct list_head *fd_list, const void *data); 25 26 enum devx_obj_flags { 27 DEVX_OBJ_FLAGS_INDIRECT_MKEY = 1 << 0, 28 DEVX_OBJ_FLAGS_DCT = 1 << 1, 29 DEVX_OBJ_FLAGS_CQ = 1 << 2, 30 }; 31 32 struct devx_async_data { 33 struct mlx5_ib_dev *mdev; 34 struct list_head list; 35 struct devx_async_cmd_event_file *ev_file; 36 struct mlx5_async_work cb_work; 37 u16 cmd_out_len; 38 /* must be last field in this structure */ 39 struct mlx5_ib_uapi_devx_async_cmd_hdr hdr; 40 }; 41 42 struct devx_async_event_data { 43 struct list_head list; /* headed in ev_file->event_list */ 44 struct mlx5_ib_uapi_devx_async_event_hdr hdr; 45 }; 46 47 /* first level XA value data structure */ 48 struct devx_event { 49 struct xarray object_ids; /* second XA level, Key = object id */ 50 struct list_head unaffiliated_list; 51 }; 52 53 /* second level XA value data structure */ 54 struct devx_obj_event { 55 struct rcu_head rcu; 56 struct list_head obj_sub_list; 57 }; 58 59 struct devx_event_subscription { 60 struct list_head file_list; /* headed in ev_file-> 61 * subscribed_events_list 62 */ 63 struct list_head xa_list; /* headed in devx_event->unaffiliated_list or 64 * devx_obj_event->obj_sub_list 65 */ 66 struct list_head obj_list; /* headed in devx_object */ 67 struct list_head event_list; /* headed in ev_file->event_list or in 68 * temp list via subscription 69 */ 70 71 u8 is_cleaned:1; 72 u32 xa_key_level1; 73 u32 xa_key_level2; 74 struct rcu_head rcu; 75 u64 cookie; 76 struct devx_async_event_file *ev_file; 77 struct eventfd_ctx *eventfd; 78 }; 79 80 struct devx_async_event_file { 81 struct ib_uobject uobj; 82 /* Head of events that are subscribed to this FD */ 83 struct list_head subscribed_events_list; 84 spinlock_t lock; 85 wait_queue_head_t poll_wait; 86 struct list_head event_list; 87 struct mlx5_ib_dev *dev; 88 u8 omit_data:1; 89 u8 is_overflow_err:1; 90 u8 is_destroyed:1; 91 }; 92 93 struct devx_umem { 94 struct mlx5_core_dev *mdev; 95 struct ib_umem *umem; 96 u32 dinlen; 97 u32 dinbox[MLX5_ST_SZ_DW(destroy_umem_in)]; 98 }; 99 100 struct devx_umem_reg_cmd { 101 void *in; 102 u32 inlen; 103 u32 out[MLX5_ST_SZ_DW(create_umem_out)]; 104 }; 105 106 static struct mlx5_ib_ucontext * 107 devx_ufile2uctx(const struct uverbs_attr_bundle *attrs) 108 { 109 return to_mucontext(ib_uverbs_get_ucontext(attrs)); 110 } 111 112 int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user) 113 { 114 u32 in[MLX5_ST_SZ_DW(create_uctx_in)] = {}; 115 u32 out[MLX5_ST_SZ_DW(create_uctx_out)] = {}; 116 void *uctx; 117 int err; 118 u16 uid; 119 u32 cap = 0; 120 121 /* 0 means not supported */ 122 if (!MLX5_CAP_GEN(dev->mdev, log_max_uctx)) 123 return -EINVAL; 124 125 uctx = MLX5_ADDR_OF(create_uctx_in, in, uctx); 126 if (is_user && capable(CAP_NET_RAW) && 127 (MLX5_CAP_GEN(dev->mdev, uctx_cap) & MLX5_UCTX_CAP_RAW_TX)) 128 cap |= MLX5_UCTX_CAP_RAW_TX; 129 if (is_user && capable(CAP_SYS_RAWIO) && 130 (MLX5_CAP_GEN(dev->mdev, uctx_cap) & 131 MLX5_UCTX_CAP_INTERNAL_DEV_RES)) 132 cap |= MLX5_UCTX_CAP_INTERNAL_DEV_RES; 133 134 MLX5_SET(create_uctx_in, in, opcode, MLX5_CMD_OP_CREATE_UCTX); 135 MLX5_SET(uctx, uctx, cap, cap); 136 137 err = mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out)); 138 if (err) 139 return err; 140 141 uid = MLX5_GET(create_uctx_out, out, uid); 142 return uid; 143 } 144 145 void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid) 146 { 147 u32 in[MLX5_ST_SZ_DW(destroy_uctx_in)] = {}; 148 u32 out[MLX5_ST_SZ_DW(destroy_uctx_out)] = {}; 149 150 MLX5_SET(destroy_uctx_in, in, opcode, MLX5_CMD_OP_DESTROY_UCTX); 151 MLX5_SET(destroy_uctx_in, in, uid, uid); 152 153 mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out)); 154 } 155 156 static bool is_legacy_unaffiliated_event_num(u16 event_num) 157 { 158 switch (event_num) { 159 case MLX5_EVENT_TYPE_PORT_CHANGE: 160 return true; 161 default: 162 return false; 163 } 164 } 165 166 static bool is_legacy_obj_event_num(u16 event_num) 167 { 168 switch (event_num) { 169 case MLX5_EVENT_TYPE_PATH_MIG: 170 case MLX5_EVENT_TYPE_COMM_EST: 171 case MLX5_EVENT_TYPE_SQ_DRAINED: 172 case MLX5_EVENT_TYPE_SRQ_LAST_WQE: 173 case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT: 174 case MLX5_EVENT_TYPE_CQ_ERROR: 175 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: 176 case MLX5_EVENT_TYPE_PATH_MIG_FAILED: 177 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: 178 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: 179 case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR: 180 case MLX5_EVENT_TYPE_DCT_DRAINED: 181 case MLX5_EVENT_TYPE_COMP: 182 case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION: 183 case MLX5_EVENT_TYPE_XRQ_ERROR: 184 return true; 185 default: 186 return false; 187 } 188 } 189 190 static u16 get_legacy_obj_type(u16 opcode) 191 { 192 switch (opcode) { 193 case MLX5_CMD_OP_CREATE_RQ: 194 return MLX5_EVENT_QUEUE_TYPE_RQ; 195 case MLX5_CMD_OP_CREATE_QP: 196 return MLX5_EVENT_QUEUE_TYPE_QP; 197 case MLX5_CMD_OP_CREATE_SQ: 198 return MLX5_EVENT_QUEUE_TYPE_SQ; 199 case MLX5_CMD_OP_CREATE_DCT: 200 return MLX5_EVENT_QUEUE_TYPE_DCT; 201 default: 202 return 0; 203 } 204 } 205 206 static u16 get_dec_obj_type(struct devx_obj *obj, u16 event_num) 207 { 208 u16 opcode; 209 210 opcode = (obj->obj_id >> 32) & 0xffff; 211 212 if (is_legacy_obj_event_num(event_num)) 213 return get_legacy_obj_type(opcode); 214 215 switch (opcode) { 216 case MLX5_CMD_OP_CREATE_GENERAL_OBJECT: 217 return (obj->obj_id >> 48); 218 case MLX5_CMD_OP_CREATE_RQ: 219 return MLX5_OBJ_TYPE_RQ; 220 case MLX5_CMD_OP_CREATE_QP: 221 return MLX5_OBJ_TYPE_QP; 222 case MLX5_CMD_OP_CREATE_SQ: 223 return MLX5_OBJ_TYPE_SQ; 224 case MLX5_CMD_OP_CREATE_DCT: 225 return MLX5_OBJ_TYPE_DCT; 226 case MLX5_CMD_OP_CREATE_TIR: 227 return MLX5_OBJ_TYPE_TIR; 228 case MLX5_CMD_OP_CREATE_TIS: 229 return MLX5_OBJ_TYPE_TIS; 230 case MLX5_CMD_OP_CREATE_PSV: 231 return MLX5_OBJ_TYPE_PSV; 232 case MLX5_OBJ_TYPE_MKEY: 233 return MLX5_OBJ_TYPE_MKEY; 234 case MLX5_CMD_OP_CREATE_RMP: 235 return MLX5_OBJ_TYPE_RMP; 236 case MLX5_CMD_OP_CREATE_XRC_SRQ: 237 return MLX5_OBJ_TYPE_XRC_SRQ; 238 case MLX5_CMD_OP_CREATE_XRQ: 239 return MLX5_OBJ_TYPE_XRQ; 240 case MLX5_CMD_OP_CREATE_RQT: 241 return MLX5_OBJ_TYPE_RQT; 242 case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: 243 return MLX5_OBJ_TYPE_FLOW_COUNTER; 244 case MLX5_CMD_OP_CREATE_CQ: 245 return MLX5_OBJ_TYPE_CQ; 246 default: 247 return 0; 248 } 249 } 250 251 static u16 get_event_obj_type(unsigned long event_type, struct mlx5_eqe *eqe) 252 { 253 switch (event_type) { 254 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: 255 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: 256 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: 257 case MLX5_EVENT_TYPE_SRQ_LAST_WQE: 258 case MLX5_EVENT_TYPE_PATH_MIG: 259 case MLX5_EVENT_TYPE_PATH_MIG_FAILED: 260 case MLX5_EVENT_TYPE_COMM_EST: 261 case MLX5_EVENT_TYPE_SQ_DRAINED: 262 case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT: 263 case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR: 264 return eqe->data.qp_srq.type; 265 case MLX5_EVENT_TYPE_CQ_ERROR: 266 case MLX5_EVENT_TYPE_XRQ_ERROR: 267 return 0; 268 case MLX5_EVENT_TYPE_DCT_DRAINED: 269 case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION: 270 return MLX5_EVENT_QUEUE_TYPE_DCT; 271 default: 272 return MLX5_GET(affiliated_event_header, &eqe->data, obj_type); 273 } 274 } 275 276 static u32 get_dec_obj_id(u64 obj_id) 277 { 278 return (obj_id & 0xffffffff); 279 } 280 281 /* 282 * As the obj_id in the firmware is not globally unique the object type 283 * must be considered upon checking for a valid object id. 284 * For that the opcode of the creator command is encoded as part of the obj_id. 285 */ 286 static u64 get_enc_obj_id(u32 opcode, u32 obj_id) 287 { 288 return ((u64)opcode << 32) | obj_id; 289 } 290 291 static u32 devx_get_created_obj_id(const void *in, const void *out, u16 opcode) 292 { 293 switch (opcode) { 294 case MLX5_CMD_OP_CREATE_GENERAL_OBJECT: 295 return MLX5_GET(general_obj_out_cmd_hdr, out, obj_id); 296 case MLX5_CMD_OP_CREATE_UMEM: 297 return MLX5_GET(create_umem_out, out, umem_id); 298 case MLX5_CMD_OP_CREATE_MKEY: 299 return MLX5_GET(create_mkey_out, out, mkey_index); 300 case MLX5_CMD_OP_CREATE_CQ: 301 return MLX5_GET(create_cq_out, out, cqn); 302 case MLX5_CMD_OP_ALLOC_PD: 303 return MLX5_GET(alloc_pd_out, out, pd); 304 case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN: 305 return MLX5_GET(alloc_transport_domain_out, out, 306 transport_domain); 307 case MLX5_CMD_OP_CREATE_RMP: 308 return MLX5_GET(create_rmp_out, out, rmpn); 309 case MLX5_CMD_OP_CREATE_SQ: 310 return MLX5_GET(create_sq_out, out, sqn); 311 case MLX5_CMD_OP_CREATE_RQ: 312 return MLX5_GET(create_rq_out, out, rqn); 313 case MLX5_CMD_OP_CREATE_RQT: 314 return MLX5_GET(create_rqt_out, out, rqtn); 315 case MLX5_CMD_OP_CREATE_TIR: 316 return MLX5_GET(create_tir_out, out, tirn); 317 case MLX5_CMD_OP_CREATE_TIS: 318 return MLX5_GET(create_tis_out, out, tisn); 319 case MLX5_CMD_OP_ALLOC_Q_COUNTER: 320 return MLX5_GET(alloc_q_counter_out, out, counter_set_id); 321 case MLX5_CMD_OP_CREATE_FLOW_TABLE: 322 return MLX5_GET(create_flow_table_out, out, table_id); 323 case MLX5_CMD_OP_CREATE_FLOW_GROUP: 324 return MLX5_GET(create_flow_group_out, out, group_id); 325 case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: 326 return MLX5_GET(set_fte_in, in, flow_index); 327 case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: 328 return MLX5_GET(alloc_flow_counter_out, out, flow_counter_id); 329 case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT: 330 return MLX5_GET(alloc_packet_reformat_context_out, out, 331 packet_reformat_id); 332 case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT: 333 return MLX5_GET(alloc_modify_header_context_out, out, 334 modify_header_id); 335 case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT: 336 return MLX5_GET(create_scheduling_element_out, out, 337 scheduling_element_id); 338 case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: 339 return MLX5_GET(add_vxlan_udp_dport_in, in, vxlan_udp_port); 340 case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: 341 return MLX5_GET(set_l2_table_entry_in, in, table_index); 342 case MLX5_CMD_OP_CREATE_QP: 343 return MLX5_GET(create_qp_out, out, qpn); 344 case MLX5_CMD_OP_CREATE_SRQ: 345 return MLX5_GET(create_srq_out, out, srqn); 346 case MLX5_CMD_OP_CREATE_XRC_SRQ: 347 return MLX5_GET(create_xrc_srq_out, out, xrc_srqn); 348 case MLX5_CMD_OP_CREATE_DCT: 349 return MLX5_GET(create_dct_out, out, dctn); 350 case MLX5_CMD_OP_CREATE_XRQ: 351 return MLX5_GET(create_xrq_out, out, xrqn); 352 case MLX5_CMD_OP_ATTACH_TO_MCG: 353 return MLX5_GET(attach_to_mcg_in, in, qpn); 354 case MLX5_CMD_OP_ALLOC_XRCD: 355 return MLX5_GET(alloc_xrcd_out, out, xrcd); 356 case MLX5_CMD_OP_CREATE_PSV: 357 return MLX5_GET(create_psv_out, out, psv0_index); 358 default: 359 /* The entry must match to one of the devx_is_obj_create_cmd */ 360 WARN_ON(true); 361 return 0; 362 } 363 } 364 365 static u64 devx_get_obj_id(const void *in) 366 { 367 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); 368 u64 obj_id; 369 370 switch (opcode) { 371 case MLX5_CMD_OP_MODIFY_GENERAL_OBJECT: 372 case MLX5_CMD_OP_QUERY_GENERAL_OBJECT: 373 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_GENERAL_OBJECT | 374 MLX5_GET(general_obj_in_cmd_hdr, in, 375 obj_type) << 16, 376 MLX5_GET(general_obj_in_cmd_hdr, in, 377 obj_id)); 378 break; 379 case MLX5_CMD_OP_QUERY_MKEY: 380 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_MKEY, 381 MLX5_GET(query_mkey_in, in, 382 mkey_index)); 383 break; 384 case MLX5_CMD_OP_QUERY_CQ: 385 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ, 386 MLX5_GET(query_cq_in, in, cqn)); 387 break; 388 case MLX5_CMD_OP_MODIFY_CQ: 389 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ, 390 MLX5_GET(modify_cq_in, in, cqn)); 391 break; 392 case MLX5_CMD_OP_QUERY_SQ: 393 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ, 394 MLX5_GET(query_sq_in, in, sqn)); 395 break; 396 case MLX5_CMD_OP_MODIFY_SQ: 397 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ, 398 MLX5_GET(modify_sq_in, in, sqn)); 399 break; 400 case MLX5_CMD_OP_QUERY_RQ: 401 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, 402 MLX5_GET(query_rq_in, in, rqn)); 403 break; 404 case MLX5_CMD_OP_MODIFY_RQ: 405 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, 406 MLX5_GET(modify_rq_in, in, rqn)); 407 break; 408 case MLX5_CMD_OP_QUERY_RMP: 409 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RMP, 410 MLX5_GET(query_rmp_in, in, rmpn)); 411 break; 412 case MLX5_CMD_OP_MODIFY_RMP: 413 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RMP, 414 MLX5_GET(modify_rmp_in, in, rmpn)); 415 break; 416 case MLX5_CMD_OP_QUERY_RQT: 417 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT, 418 MLX5_GET(query_rqt_in, in, rqtn)); 419 break; 420 case MLX5_CMD_OP_MODIFY_RQT: 421 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT, 422 MLX5_GET(modify_rqt_in, in, rqtn)); 423 break; 424 case MLX5_CMD_OP_QUERY_TIR: 425 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR, 426 MLX5_GET(query_tir_in, in, tirn)); 427 break; 428 case MLX5_CMD_OP_MODIFY_TIR: 429 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR, 430 MLX5_GET(modify_tir_in, in, tirn)); 431 break; 432 case MLX5_CMD_OP_QUERY_TIS: 433 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS, 434 MLX5_GET(query_tis_in, in, tisn)); 435 break; 436 case MLX5_CMD_OP_MODIFY_TIS: 437 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS, 438 MLX5_GET(modify_tis_in, in, tisn)); 439 break; 440 case MLX5_CMD_OP_QUERY_FLOW_TABLE: 441 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_TABLE, 442 MLX5_GET(query_flow_table_in, in, 443 table_id)); 444 break; 445 case MLX5_CMD_OP_MODIFY_FLOW_TABLE: 446 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_TABLE, 447 MLX5_GET(modify_flow_table_in, in, 448 table_id)); 449 break; 450 case MLX5_CMD_OP_QUERY_FLOW_GROUP: 451 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_GROUP, 452 MLX5_GET(query_flow_group_in, in, 453 group_id)); 454 break; 455 case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY: 456 obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY, 457 MLX5_GET(query_fte_in, in, 458 flow_index)); 459 break; 460 case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: 461 obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY, 462 MLX5_GET(set_fte_in, in, flow_index)); 463 break; 464 case MLX5_CMD_OP_QUERY_Q_COUNTER: 465 obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_Q_COUNTER, 466 MLX5_GET(query_q_counter_in, in, 467 counter_set_id)); 468 break; 469 case MLX5_CMD_OP_QUERY_FLOW_COUNTER: 470 obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_FLOW_COUNTER, 471 MLX5_GET(query_flow_counter_in, in, 472 flow_counter_id)); 473 break; 474 case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT: 475 obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT, 476 MLX5_GET(query_modify_header_context_in, 477 in, modify_header_id)); 478 break; 479 case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT: 480 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT, 481 MLX5_GET(query_scheduling_element_in, 482 in, scheduling_element_id)); 483 break; 484 case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT: 485 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT, 486 MLX5_GET(modify_scheduling_element_in, 487 in, scheduling_element_id)); 488 break; 489 case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: 490 obj_id = get_enc_obj_id(MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT, 491 MLX5_GET(add_vxlan_udp_dport_in, in, 492 vxlan_udp_port)); 493 break; 494 case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY: 495 obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_L2_TABLE_ENTRY, 496 MLX5_GET(query_l2_table_entry_in, in, 497 table_index)); 498 break; 499 case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: 500 obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_L2_TABLE_ENTRY, 501 MLX5_GET(set_l2_table_entry_in, in, 502 table_index)); 503 break; 504 case MLX5_CMD_OP_QUERY_QP: 505 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, 506 MLX5_GET(query_qp_in, in, qpn)); 507 break; 508 case MLX5_CMD_OP_RST2INIT_QP: 509 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, 510 MLX5_GET(rst2init_qp_in, in, qpn)); 511 break; 512 case MLX5_CMD_OP_INIT2INIT_QP: 513 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, 514 MLX5_GET(init2init_qp_in, in, qpn)); 515 break; 516 case MLX5_CMD_OP_INIT2RTR_QP: 517 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, 518 MLX5_GET(init2rtr_qp_in, in, qpn)); 519 break; 520 case MLX5_CMD_OP_RTR2RTS_QP: 521 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, 522 MLX5_GET(rtr2rts_qp_in, in, qpn)); 523 break; 524 case MLX5_CMD_OP_RTS2RTS_QP: 525 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, 526 MLX5_GET(rts2rts_qp_in, in, qpn)); 527 break; 528 case MLX5_CMD_OP_SQERR2RTS_QP: 529 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, 530 MLX5_GET(sqerr2rts_qp_in, in, qpn)); 531 break; 532 case MLX5_CMD_OP_2ERR_QP: 533 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, 534 MLX5_GET(qp_2err_in, in, qpn)); 535 break; 536 case MLX5_CMD_OP_2RST_QP: 537 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, 538 MLX5_GET(qp_2rst_in, in, qpn)); 539 break; 540 case MLX5_CMD_OP_QUERY_DCT: 541 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT, 542 MLX5_GET(query_dct_in, in, dctn)); 543 break; 544 case MLX5_CMD_OP_QUERY_XRQ: 545 case MLX5_CMD_OP_QUERY_XRQ_DC_PARAMS_ENTRY: 546 case MLX5_CMD_OP_QUERY_XRQ_ERROR_PARAMS: 547 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRQ, 548 MLX5_GET(query_xrq_in, in, xrqn)); 549 break; 550 case MLX5_CMD_OP_QUERY_XRC_SRQ: 551 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRC_SRQ, 552 MLX5_GET(query_xrc_srq_in, in, 553 xrc_srqn)); 554 break; 555 case MLX5_CMD_OP_ARM_XRC_SRQ: 556 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRC_SRQ, 557 MLX5_GET(arm_xrc_srq_in, in, xrc_srqn)); 558 break; 559 case MLX5_CMD_OP_QUERY_SRQ: 560 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SRQ, 561 MLX5_GET(query_srq_in, in, srqn)); 562 break; 563 case MLX5_CMD_OP_ARM_RQ: 564 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, 565 MLX5_GET(arm_rq_in, in, srq_number)); 566 break; 567 case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION: 568 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT, 569 MLX5_GET(drain_dct_in, in, dctn)); 570 break; 571 case MLX5_CMD_OP_ARM_XRQ: 572 case MLX5_CMD_OP_SET_XRQ_DC_PARAMS_ENTRY: 573 case MLX5_CMD_OP_RELEASE_XRQ_ERROR: 574 case MLX5_CMD_OP_MODIFY_XRQ: 575 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRQ, 576 MLX5_GET(arm_xrq_in, in, xrqn)); 577 break; 578 case MLX5_CMD_OP_QUERY_PACKET_REFORMAT_CONTEXT: 579 obj_id = get_enc_obj_id 580 (MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT, 581 MLX5_GET(query_packet_reformat_context_in, 582 in, packet_reformat_id)); 583 break; 584 default: 585 obj_id = 0; 586 } 587 588 return obj_id; 589 } 590 591 static bool devx_is_valid_obj_id(struct uverbs_attr_bundle *attrs, 592 struct ib_uobject *uobj, const void *in) 593 { 594 struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata); 595 u64 obj_id = devx_get_obj_id(in); 596 597 if (!obj_id) 598 return false; 599 600 switch (uobj_get_object_id(uobj)) { 601 case UVERBS_OBJECT_CQ: 602 return get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ, 603 to_mcq(uobj->object)->mcq.cqn) == 604 obj_id; 605 606 case UVERBS_OBJECT_SRQ: 607 { 608 struct mlx5_core_srq *srq = &(to_msrq(uobj->object)->msrq); 609 u16 opcode; 610 611 switch (srq->common.res) { 612 case MLX5_RES_XSRQ: 613 opcode = MLX5_CMD_OP_CREATE_XRC_SRQ; 614 break; 615 case MLX5_RES_XRQ: 616 opcode = MLX5_CMD_OP_CREATE_XRQ; 617 break; 618 default: 619 if (!dev->mdev->issi) 620 opcode = MLX5_CMD_OP_CREATE_SRQ; 621 else 622 opcode = MLX5_CMD_OP_CREATE_RMP; 623 } 624 625 return get_enc_obj_id(opcode, 626 to_msrq(uobj->object)->msrq.srqn) == 627 obj_id; 628 } 629 630 case UVERBS_OBJECT_QP: 631 { 632 struct mlx5_ib_qp *qp = to_mqp(uobj->object); 633 634 if (qp->type == IB_QPT_RAW_PACKET || 635 (qp->flags & IB_QP_CREATE_SOURCE_QPN)) { 636 struct mlx5_ib_raw_packet_qp *raw_packet_qp = 637 &qp->raw_packet_qp; 638 struct mlx5_ib_rq *rq = &raw_packet_qp->rq; 639 struct mlx5_ib_sq *sq = &raw_packet_qp->sq; 640 641 return (get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, 642 rq->base.mqp.qpn) == obj_id || 643 get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ, 644 sq->base.mqp.qpn) == obj_id || 645 get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR, 646 rq->tirn) == obj_id || 647 get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS, 648 sq->tisn) == obj_id); 649 } 650 651 if (qp->type == MLX5_IB_QPT_DCT) 652 return get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT, 653 qp->dct.mdct.mqp.qpn) == obj_id; 654 return get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, 655 qp->ibqp.qp_num) == obj_id; 656 } 657 658 case UVERBS_OBJECT_WQ: 659 return get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, 660 to_mrwq(uobj->object)->core_qp.qpn) == 661 obj_id; 662 663 case UVERBS_OBJECT_RWQ_IND_TBL: 664 return get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT, 665 to_mrwq_ind_table(uobj->object)->rqtn) == 666 obj_id; 667 668 case MLX5_IB_OBJECT_DEVX_OBJ: 669 { 670 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); 671 struct devx_obj *devx_uobj = uobj->object; 672 673 if (opcode == MLX5_CMD_OP_QUERY_FLOW_COUNTER && 674 devx_uobj->flow_counter_bulk_size) { 675 u64 end; 676 677 end = devx_uobj->obj_id + 678 devx_uobj->flow_counter_bulk_size; 679 return devx_uobj->obj_id <= obj_id && end > obj_id; 680 } 681 682 return devx_uobj->obj_id == obj_id; 683 } 684 685 default: 686 return false; 687 } 688 } 689 690 static void devx_set_umem_valid(const void *in) 691 { 692 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); 693 694 switch (opcode) { 695 case MLX5_CMD_OP_CREATE_MKEY: 696 MLX5_SET(create_mkey_in, in, mkey_umem_valid, 1); 697 break; 698 case MLX5_CMD_OP_CREATE_CQ: 699 { 700 void *cqc; 701 702 MLX5_SET(create_cq_in, in, cq_umem_valid, 1); 703 cqc = MLX5_ADDR_OF(create_cq_in, in, cq_context); 704 MLX5_SET(cqc, cqc, dbr_umem_valid, 1); 705 break; 706 } 707 case MLX5_CMD_OP_CREATE_QP: 708 { 709 void *qpc; 710 711 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc); 712 MLX5_SET(qpc, qpc, dbr_umem_valid, 1); 713 MLX5_SET(create_qp_in, in, wq_umem_valid, 1); 714 break; 715 } 716 717 case MLX5_CMD_OP_CREATE_RQ: 718 { 719 void *rqc, *wq; 720 721 rqc = MLX5_ADDR_OF(create_rq_in, in, ctx); 722 wq = MLX5_ADDR_OF(rqc, rqc, wq); 723 MLX5_SET(wq, wq, dbr_umem_valid, 1); 724 MLX5_SET(wq, wq, wq_umem_valid, 1); 725 break; 726 } 727 728 case MLX5_CMD_OP_CREATE_SQ: 729 { 730 void *sqc, *wq; 731 732 sqc = MLX5_ADDR_OF(create_sq_in, in, ctx); 733 wq = MLX5_ADDR_OF(sqc, sqc, wq); 734 MLX5_SET(wq, wq, dbr_umem_valid, 1); 735 MLX5_SET(wq, wq, wq_umem_valid, 1); 736 break; 737 } 738 739 case MLX5_CMD_OP_MODIFY_CQ: 740 MLX5_SET(modify_cq_in, in, cq_umem_valid, 1); 741 break; 742 743 case MLX5_CMD_OP_CREATE_RMP: 744 { 745 void *rmpc, *wq; 746 747 rmpc = MLX5_ADDR_OF(create_rmp_in, in, ctx); 748 wq = MLX5_ADDR_OF(rmpc, rmpc, wq); 749 MLX5_SET(wq, wq, dbr_umem_valid, 1); 750 MLX5_SET(wq, wq, wq_umem_valid, 1); 751 break; 752 } 753 754 case MLX5_CMD_OP_CREATE_XRQ: 755 { 756 void *xrqc, *wq; 757 758 xrqc = MLX5_ADDR_OF(create_xrq_in, in, xrq_context); 759 wq = MLX5_ADDR_OF(xrqc, xrqc, wq); 760 MLX5_SET(wq, wq, dbr_umem_valid, 1); 761 MLX5_SET(wq, wq, wq_umem_valid, 1); 762 break; 763 } 764 765 case MLX5_CMD_OP_CREATE_XRC_SRQ: 766 { 767 void *xrc_srqc; 768 769 MLX5_SET(create_xrc_srq_in, in, xrc_srq_umem_valid, 1); 770 xrc_srqc = MLX5_ADDR_OF(create_xrc_srq_in, in, 771 xrc_srq_context_entry); 772 MLX5_SET(xrc_srqc, xrc_srqc, dbr_umem_valid, 1); 773 break; 774 } 775 776 default: 777 return; 778 } 779 } 780 781 static bool devx_is_obj_create_cmd(const void *in, u16 *opcode) 782 { 783 *opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); 784 785 switch (*opcode) { 786 case MLX5_CMD_OP_CREATE_GENERAL_OBJECT: 787 case MLX5_CMD_OP_CREATE_MKEY: 788 case MLX5_CMD_OP_CREATE_CQ: 789 case MLX5_CMD_OP_ALLOC_PD: 790 case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN: 791 case MLX5_CMD_OP_CREATE_RMP: 792 case MLX5_CMD_OP_CREATE_SQ: 793 case MLX5_CMD_OP_CREATE_RQ: 794 case MLX5_CMD_OP_CREATE_RQT: 795 case MLX5_CMD_OP_CREATE_TIR: 796 case MLX5_CMD_OP_CREATE_TIS: 797 case MLX5_CMD_OP_ALLOC_Q_COUNTER: 798 case MLX5_CMD_OP_CREATE_FLOW_TABLE: 799 case MLX5_CMD_OP_CREATE_FLOW_GROUP: 800 case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: 801 case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT: 802 case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT: 803 case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT: 804 case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: 805 case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: 806 case MLX5_CMD_OP_CREATE_QP: 807 case MLX5_CMD_OP_CREATE_SRQ: 808 case MLX5_CMD_OP_CREATE_XRC_SRQ: 809 case MLX5_CMD_OP_CREATE_DCT: 810 case MLX5_CMD_OP_CREATE_XRQ: 811 case MLX5_CMD_OP_ATTACH_TO_MCG: 812 case MLX5_CMD_OP_ALLOC_XRCD: 813 return true; 814 case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: 815 { 816 u16 op_mod = MLX5_GET(set_fte_in, in, op_mod); 817 if (op_mod == 0) 818 return true; 819 return false; 820 } 821 case MLX5_CMD_OP_CREATE_PSV: 822 { 823 u8 num_psv = MLX5_GET(create_psv_in, in, num_psv); 824 825 if (num_psv == 1) 826 return true; 827 return false; 828 } 829 default: 830 return false; 831 } 832 } 833 834 static bool devx_is_obj_modify_cmd(const void *in) 835 { 836 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); 837 838 switch (opcode) { 839 case MLX5_CMD_OP_MODIFY_GENERAL_OBJECT: 840 case MLX5_CMD_OP_MODIFY_CQ: 841 case MLX5_CMD_OP_MODIFY_RMP: 842 case MLX5_CMD_OP_MODIFY_SQ: 843 case MLX5_CMD_OP_MODIFY_RQ: 844 case MLX5_CMD_OP_MODIFY_RQT: 845 case MLX5_CMD_OP_MODIFY_TIR: 846 case MLX5_CMD_OP_MODIFY_TIS: 847 case MLX5_CMD_OP_MODIFY_FLOW_TABLE: 848 case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT: 849 case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: 850 case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: 851 case MLX5_CMD_OP_RST2INIT_QP: 852 case MLX5_CMD_OP_INIT2RTR_QP: 853 case MLX5_CMD_OP_INIT2INIT_QP: 854 case MLX5_CMD_OP_RTR2RTS_QP: 855 case MLX5_CMD_OP_RTS2RTS_QP: 856 case MLX5_CMD_OP_SQERR2RTS_QP: 857 case MLX5_CMD_OP_2ERR_QP: 858 case MLX5_CMD_OP_2RST_QP: 859 case MLX5_CMD_OP_ARM_XRC_SRQ: 860 case MLX5_CMD_OP_ARM_RQ: 861 case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION: 862 case MLX5_CMD_OP_ARM_XRQ: 863 case MLX5_CMD_OP_SET_XRQ_DC_PARAMS_ENTRY: 864 case MLX5_CMD_OP_RELEASE_XRQ_ERROR: 865 case MLX5_CMD_OP_MODIFY_XRQ: 866 return true; 867 case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: 868 { 869 u16 op_mod = MLX5_GET(set_fte_in, in, op_mod); 870 871 if (op_mod == 1) 872 return true; 873 return false; 874 } 875 default: 876 return false; 877 } 878 } 879 880 static bool devx_is_obj_query_cmd(const void *in) 881 { 882 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); 883 884 switch (opcode) { 885 case MLX5_CMD_OP_QUERY_GENERAL_OBJECT: 886 case MLX5_CMD_OP_QUERY_MKEY: 887 case MLX5_CMD_OP_QUERY_CQ: 888 case MLX5_CMD_OP_QUERY_RMP: 889 case MLX5_CMD_OP_QUERY_SQ: 890 case MLX5_CMD_OP_QUERY_RQ: 891 case MLX5_CMD_OP_QUERY_RQT: 892 case MLX5_CMD_OP_QUERY_TIR: 893 case MLX5_CMD_OP_QUERY_TIS: 894 case MLX5_CMD_OP_QUERY_Q_COUNTER: 895 case MLX5_CMD_OP_QUERY_FLOW_TABLE: 896 case MLX5_CMD_OP_QUERY_FLOW_GROUP: 897 case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY: 898 case MLX5_CMD_OP_QUERY_FLOW_COUNTER: 899 case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT: 900 case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT: 901 case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY: 902 case MLX5_CMD_OP_QUERY_QP: 903 case MLX5_CMD_OP_QUERY_SRQ: 904 case MLX5_CMD_OP_QUERY_XRC_SRQ: 905 case MLX5_CMD_OP_QUERY_DCT: 906 case MLX5_CMD_OP_QUERY_XRQ: 907 case MLX5_CMD_OP_QUERY_XRQ_DC_PARAMS_ENTRY: 908 case MLX5_CMD_OP_QUERY_XRQ_ERROR_PARAMS: 909 case MLX5_CMD_OP_QUERY_PACKET_REFORMAT_CONTEXT: 910 return true; 911 default: 912 return false; 913 } 914 } 915 916 static bool devx_is_whitelist_cmd(void *in) 917 { 918 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); 919 920 switch (opcode) { 921 case MLX5_CMD_OP_QUERY_HCA_CAP: 922 case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT: 923 case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT: 924 case MLX5_CMD_OP_QUERY_ESW_FUNCTIONS: 925 return true; 926 default: 927 return false; 928 } 929 } 930 931 static int devx_get_uid(struct mlx5_ib_ucontext *c, void *cmd_in) 932 { 933 if (devx_is_whitelist_cmd(cmd_in)) { 934 struct mlx5_ib_dev *dev; 935 936 if (c->devx_uid) 937 return c->devx_uid; 938 939 dev = to_mdev(c->ibucontext.device); 940 if (dev->devx_whitelist_uid) 941 return dev->devx_whitelist_uid; 942 943 return -EOPNOTSUPP; 944 } 945 946 if (!c->devx_uid) 947 return -EINVAL; 948 949 return c->devx_uid; 950 } 951 952 static bool devx_is_general_cmd(void *in, struct mlx5_ib_dev *dev) 953 { 954 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); 955 956 /* Pass all cmds for vhca_tunnel as general, tracking is done in FW */ 957 if ((MLX5_CAP_GEN_64(dev->mdev, vhca_tunnel_commands) && 958 MLX5_GET(general_obj_in_cmd_hdr, in, vhca_tunnel_id)) || 959 (opcode >= MLX5_CMD_OP_GENERAL_START && 960 opcode < MLX5_CMD_OP_GENERAL_END)) 961 return true; 962 963 switch (opcode) { 964 case MLX5_CMD_OP_QUERY_HCA_CAP: 965 case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT: 966 case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT: 967 case MLX5_CMD_OP_QUERY_VPORT_STATE: 968 case MLX5_CMD_OP_QUERY_ADAPTER: 969 case MLX5_CMD_OP_QUERY_ISSI: 970 case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT: 971 case MLX5_CMD_OP_QUERY_ROCE_ADDRESS: 972 case MLX5_CMD_OP_QUERY_VNIC_ENV: 973 case MLX5_CMD_OP_QUERY_VPORT_COUNTER: 974 case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG: 975 case MLX5_CMD_OP_NOP: 976 case MLX5_CMD_OP_QUERY_CONG_STATUS: 977 case MLX5_CMD_OP_QUERY_CONG_PARAMS: 978 case MLX5_CMD_OP_QUERY_CONG_STATISTICS: 979 case MLX5_CMD_OP_QUERY_LAG: 980 case MLX5_CMD_OP_QUERY_ESW_FUNCTIONS: 981 return true; 982 default: 983 return false; 984 } 985 } 986 987 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_EQN)( 988 struct uverbs_attr_bundle *attrs) 989 { 990 struct mlx5_ib_ucontext *c; 991 struct mlx5_ib_dev *dev; 992 int user_vector; 993 int dev_eqn; 994 int err; 995 996 if (uverbs_copy_from(&user_vector, attrs, 997 MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC)) 998 return -EFAULT; 999 1000 c = devx_ufile2uctx(attrs); 1001 if (IS_ERR(c)) 1002 return PTR_ERR(c); 1003 dev = to_mdev(c->ibucontext.device); 1004 1005 err = mlx5_comp_eqn_get(dev->mdev, user_vector, &dev_eqn); 1006 if (err < 0) 1007 return err; 1008 1009 if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN, 1010 &dev_eqn, sizeof(dev_eqn))) 1011 return -EFAULT; 1012 1013 return 0; 1014 } 1015 1016 /* 1017 *Security note: 1018 * The hardware protection mechanism works like this: Each device object that 1019 * is subject to UAR doorbells (QP/SQ/CQ) gets a UAR ID (called uar_page in 1020 * the device specification manual) upon its creation. Then upon doorbell, 1021 * hardware fetches the object context for which the doorbell was rang, and 1022 * validates that the UAR through which the DB was rang matches the UAR ID 1023 * of the object. 1024 * If no match the doorbell is silently ignored by the hardware. Of course, 1025 * the user cannot ring a doorbell on a UAR that was not mapped to it. 1026 * Now in devx, as the devx kernel does not manipulate the QP/SQ/CQ command 1027 * mailboxes (except tagging them with UID), we expose to the user its UAR 1028 * ID, so it can embed it in these objects in the expected specification 1029 * format. So the only thing the user can do is hurt itself by creating a 1030 * QP/SQ/CQ with a UAR ID other than his, and then in this case other users 1031 * may ring a doorbell on its objects. 1032 * The consequence of that will be that another user can schedule a QP/SQ 1033 * of the buggy user for execution (just insert it to the hardware schedule 1034 * queue or arm its CQ for event generation), no further harm is expected. 1035 */ 1036 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_UAR)( 1037 struct uverbs_attr_bundle *attrs) 1038 { 1039 struct mlx5_ib_ucontext *c; 1040 struct mlx5_ib_dev *dev; 1041 u32 user_idx; 1042 s32 dev_idx; 1043 1044 c = devx_ufile2uctx(attrs); 1045 if (IS_ERR(c)) 1046 return PTR_ERR(c); 1047 dev = to_mdev(c->ibucontext.device); 1048 1049 if (uverbs_copy_from(&user_idx, attrs, 1050 MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX)) 1051 return -EFAULT; 1052 1053 dev_idx = bfregn_to_uar_index(dev, &c->bfregi, user_idx, true); 1054 if (dev_idx < 0) 1055 return dev_idx; 1056 1057 if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX, 1058 &dev_idx, sizeof(dev_idx))) 1059 return -EFAULT; 1060 1061 return 0; 1062 } 1063 1064 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OTHER)( 1065 struct uverbs_attr_bundle *attrs) 1066 { 1067 struct mlx5_ib_ucontext *c; 1068 struct mlx5_ib_dev *dev; 1069 void *cmd_in = uverbs_attr_get_alloced_ptr( 1070 attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN); 1071 int cmd_out_len = uverbs_attr_get_len(attrs, 1072 MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT); 1073 void *cmd_out; 1074 int err, err2; 1075 int uid; 1076 1077 c = devx_ufile2uctx(attrs); 1078 if (IS_ERR(c)) 1079 return PTR_ERR(c); 1080 dev = to_mdev(c->ibucontext.device); 1081 1082 uid = devx_get_uid(c, cmd_in); 1083 if (uid < 0) 1084 return uid; 1085 1086 /* Only white list of some general HCA commands are allowed for this method. */ 1087 if (!devx_is_general_cmd(cmd_in, dev)) 1088 return -EINVAL; 1089 1090 cmd_out = uverbs_zalloc(attrs, cmd_out_len); 1091 if (IS_ERR(cmd_out)) 1092 return PTR_ERR(cmd_out); 1093 1094 MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); 1095 err = mlx5_cmd_do(dev->mdev, cmd_in, 1096 uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN), 1097 cmd_out, cmd_out_len); 1098 if (err && err != -EREMOTEIO) 1099 return err; 1100 1101 err2 = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT, cmd_out, 1102 cmd_out_len); 1103 1104 return err2 ?: err; 1105 } 1106 1107 static void devx_obj_build_destroy_cmd(void *in, void *out, void *din, 1108 u32 *dinlen, 1109 u32 *obj_id) 1110 { 1111 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); 1112 u16 uid = MLX5_GET(general_obj_in_cmd_hdr, in, uid); 1113 1114 *obj_id = devx_get_created_obj_id(in, out, opcode); 1115 *dinlen = MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr); 1116 MLX5_SET(general_obj_in_cmd_hdr, din, uid, uid); 1117 1118 switch (opcode) { 1119 case MLX5_CMD_OP_CREATE_GENERAL_OBJECT: 1120 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT); 1121 MLX5_SET(general_obj_in_cmd_hdr, din, obj_id, *obj_id); 1122 MLX5_SET(general_obj_in_cmd_hdr, din, obj_type, 1123 MLX5_GET(general_obj_in_cmd_hdr, in, obj_type)); 1124 break; 1125 1126 case MLX5_CMD_OP_CREATE_UMEM: 1127 MLX5_SET(destroy_umem_in, din, opcode, 1128 MLX5_CMD_OP_DESTROY_UMEM); 1129 MLX5_SET(destroy_umem_in, din, umem_id, *obj_id); 1130 break; 1131 case MLX5_CMD_OP_CREATE_MKEY: 1132 MLX5_SET(destroy_mkey_in, din, opcode, 1133 MLX5_CMD_OP_DESTROY_MKEY); 1134 MLX5_SET(destroy_mkey_in, din, mkey_index, *obj_id); 1135 break; 1136 case MLX5_CMD_OP_CREATE_CQ: 1137 MLX5_SET(destroy_cq_in, din, opcode, MLX5_CMD_OP_DESTROY_CQ); 1138 MLX5_SET(destroy_cq_in, din, cqn, *obj_id); 1139 break; 1140 case MLX5_CMD_OP_ALLOC_PD: 1141 MLX5_SET(dealloc_pd_in, din, opcode, MLX5_CMD_OP_DEALLOC_PD); 1142 MLX5_SET(dealloc_pd_in, din, pd, *obj_id); 1143 break; 1144 case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN: 1145 MLX5_SET(dealloc_transport_domain_in, din, opcode, 1146 MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN); 1147 MLX5_SET(dealloc_transport_domain_in, din, transport_domain, 1148 *obj_id); 1149 break; 1150 case MLX5_CMD_OP_CREATE_RMP: 1151 MLX5_SET(destroy_rmp_in, din, opcode, MLX5_CMD_OP_DESTROY_RMP); 1152 MLX5_SET(destroy_rmp_in, din, rmpn, *obj_id); 1153 break; 1154 case MLX5_CMD_OP_CREATE_SQ: 1155 MLX5_SET(destroy_sq_in, din, opcode, MLX5_CMD_OP_DESTROY_SQ); 1156 MLX5_SET(destroy_sq_in, din, sqn, *obj_id); 1157 break; 1158 case MLX5_CMD_OP_CREATE_RQ: 1159 MLX5_SET(destroy_rq_in, din, opcode, MLX5_CMD_OP_DESTROY_RQ); 1160 MLX5_SET(destroy_rq_in, din, rqn, *obj_id); 1161 break; 1162 case MLX5_CMD_OP_CREATE_RQT: 1163 MLX5_SET(destroy_rqt_in, din, opcode, MLX5_CMD_OP_DESTROY_RQT); 1164 MLX5_SET(destroy_rqt_in, din, rqtn, *obj_id); 1165 break; 1166 case MLX5_CMD_OP_CREATE_TIR: 1167 MLX5_SET(destroy_tir_in, din, opcode, MLX5_CMD_OP_DESTROY_TIR); 1168 MLX5_SET(destroy_tir_in, din, tirn, *obj_id); 1169 break; 1170 case MLX5_CMD_OP_CREATE_TIS: 1171 MLX5_SET(destroy_tis_in, din, opcode, MLX5_CMD_OP_DESTROY_TIS); 1172 MLX5_SET(destroy_tis_in, din, tisn, *obj_id); 1173 break; 1174 case MLX5_CMD_OP_ALLOC_Q_COUNTER: 1175 MLX5_SET(dealloc_q_counter_in, din, opcode, 1176 MLX5_CMD_OP_DEALLOC_Q_COUNTER); 1177 MLX5_SET(dealloc_q_counter_in, din, counter_set_id, *obj_id); 1178 break; 1179 case MLX5_CMD_OP_CREATE_FLOW_TABLE: 1180 *dinlen = MLX5_ST_SZ_BYTES(destroy_flow_table_in); 1181 MLX5_SET(destroy_flow_table_in, din, other_vport, 1182 MLX5_GET(create_flow_table_in, in, other_vport)); 1183 MLX5_SET(destroy_flow_table_in, din, vport_number, 1184 MLX5_GET(create_flow_table_in, in, vport_number)); 1185 MLX5_SET(destroy_flow_table_in, din, table_type, 1186 MLX5_GET(create_flow_table_in, in, table_type)); 1187 MLX5_SET(destroy_flow_table_in, din, table_id, *obj_id); 1188 MLX5_SET(destroy_flow_table_in, din, opcode, 1189 MLX5_CMD_OP_DESTROY_FLOW_TABLE); 1190 break; 1191 case MLX5_CMD_OP_CREATE_FLOW_GROUP: 1192 *dinlen = MLX5_ST_SZ_BYTES(destroy_flow_group_in); 1193 MLX5_SET(destroy_flow_group_in, din, other_vport, 1194 MLX5_GET(create_flow_group_in, in, other_vport)); 1195 MLX5_SET(destroy_flow_group_in, din, vport_number, 1196 MLX5_GET(create_flow_group_in, in, vport_number)); 1197 MLX5_SET(destroy_flow_group_in, din, table_type, 1198 MLX5_GET(create_flow_group_in, in, table_type)); 1199 MLX5_SET(destroy_flow_group_in, din, table_id, 1200 MLX5_GET(create_flow_group_in, in, table_id)); 1201 MLX5_SET(destroy_flow_group_in, din, group_id, *obj_id); 1202 MLX5_SET(destroy_flow_group_in, din, opcode, 1203 MLX5_CMD_OP_DESTROY_FLOW_GROUP); 1204 break; 1205 case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: 1206 *dinlen = MLX5_ST_SZ_BYTES(delete_fte_in); 1207 MLX5_SET(delete_fte_in, din, other_vport, 1208 MLX5_GET(set_fte_in, in, other_vport)); 1209 MLX5_SET(delete_fte_in, din, vport_number, 1210 MLX5_GET(set_fte_in, in, vport_number)); 1211 MLX5_SET(delete_fte_in, din, table_type, 1212 MLX5_GET(set_fte_in, in, table_type)); 1213 MLX5_SET(delete_fte_in, din, table_id, 1214 MLX5_GET(set_fte_in, in, table_id)); 1215 MLX5_SET(delete_fte_in, din, flow_index, *obj_id); 1216 MLX5_SET(delete_fte_in, din, opcode, 1217 MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY); 1218 break; 1219 case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: 1220 MLX5_SET(dealloc_flow_counter_in, din, opcode, 1221 MLX5_CMD_OP_DEALLOC_FLOW_COUNTER); 1222 MLX5_SET(dealloc_flow_counter_in, din, flow_counter_id, 1223 *obj_id); 1224 break; 1225 case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT: 1226 MLX5_SET(dealloc_packet_reformat_context_in, din, opcode, 1227 MLX5_CMD_OP_DEALLOC_PACKET_REFORMAT_CONTEXT); 1228 MLX5_SET(dealloc_packet_reformat_context_in, din, 1229 packet_reformat_id, *obj_id); 1230 break; 1231 case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT: 1232 MLX5_SET(dealloc_modify_header_context_in, din, opcode, 1233 MLX5_CMD_OP_DEALLOC_MODIFY_HEADER_CONTEXT); 1234 MLX5_SET(dealloc_modify_header_context_in, din, 1235 modify_header_id, *obj_id); 1236 break; 1237 case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT: 1238 *dinlen = MLX5_ST_SZ_BYTES(destroy_scheduling_element_in); 1239 MLX5_SET(destroy_scheduling_element_in, din, 1240 scheduling_hierarchy, 1241 MLX5_GET(create_scheduling_element_in, in, 1242 scheduling_hierarchy)); 1243 MLX5_SET(destroy_scheduling_element_in, din, 1244 scheduling_element_id, *obj_id); 1245 MLX5_SET(destroy_scheduling_element_in, din, opcode, 1246 MLX5_CMD_OP_DESTROY_SCHEDULING_ELEMENT); 1247 break; 1248 case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: 1249 *dinlen = MLX5_ST_SZ_BYTES(delete_vxlan_udp_dport_in); 1250 MLX5_SET(delete_vxlan_udp_dport_in, din, vxlan_udp_port, *obj_id); 1251 MLX5_SET(delete_vxlan_udp_dport_in, din, opcode, 1252 MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT); 1253 break; 1254 case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: 1255 *dinlen = MLX5_ST_SZ_BYTES(delete_l2_table_entry_in); 1256 MLX5_SET(delete_l2_table_entry_in, din, table_index, *obj_id); 1257 MLX5_SET(delete_l2_table_entry_in, din, opcode, 1258 MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY); 1259 break; 1260 case MLX5_CMD_OP_CREATE_QP: 1261 MLX5_SET(destroy_qp_in, din, opcode, MLX5_CMD_OP_DESTROY_QP); 1262 MLX5_SET(destroy_qp_in, din, qpn, *obj_id); 1263 break; 1264 case MLX5_CMD_OP_CREATE_SRQ: 1265 MLX5_SET(destroy_srq_in, din, opcode, MLX5_CMD_OP_DESTROY_SRQ); 1266 MLX5_SET(destroy_srq_in, din, srqn, *obj_id); 1267 break; 1268 case MLX5_CMD_OP_CREATE_XRC_SRQ: 1269 MLX5_SET(destroy_xrc_srq_in, din, opcode, 1270 MLX5_CMD_OP_DESTROY_XRC_SRQ); 1271 MLX5_SET(destroy_xrc_srq_in, din, xrc_srqn, *obj_id); 1272 break; 1273 case MLX5_CMD_OP_CREATE_DCT: 1274 MLX5_SET(destroy_dct_in, din, opcode, MLX5_CMD_OP_DESTROY_DCT); 1275 MLX5_SET(destroy_dct_in, din, dctn, *obj_id); 1276 break; 1277 case MLX5_CMD_OP_CREATE_XRQ: 1278 MLX5_SET(destroy_xrq_in, din, opcode, MLX5_CMD_OP_DESTROY_XRQ); 1279 MLX5_SET(destroy_xrq_in, din, xrqn, *obj_id); 1280 break; 1281 case MLX5_CMD_OP_ATTACH_TO_MCG: 1282 *dinlen = MLX5_ST_SZ_BYTES(detach_from_mcg_in); 1283 MLX5_SET(detach_from_mcg_in, din, qpn, 1284 MLX5_GET(attach_to_mcg_in, in, qpn)); 1285 memcpy(MLX5_ADDR_OF(detach_from_mcg_in, din, multicast_gid), 1286 MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid), 1287 MLX5_FLD_SZ_BYTES(attach_to_mcg_in, multicast_gid)); 1288 MLX5_SET(detach_from_mcg_in, din, opcode, 1289 MLX5_CMD_OP_DETACH_FROM_MCG); 1290 MLX5_SET(detach_from_mcg_in, din, qpn, *obj_id); 1291 break; 1292 case MLX5_CMD_OP_ALLOC_XRCD: 1293 MLX5_SET(dealloc_xrcd_in, din, opcode, 1294 MLX5_CMD_OP_DEALLOC_XRCD); 1295 MLX5_SET(dealloc_xrcd_in, din, xrcd, *obj_id); 1296 break; 1297 case MLX5_CMD_OP_CREATE_PSV: 1298 MLX5_SET(destroy_psv_in, din, opcode, 1299 MLX5_CMD_OP_DESTROY_PSV); 1300 MLX5_SET(destroy_psv_in, din, psvn, *obj_id); 1301 break; 1302 default: 1303 /* The entry must match to one of the devx_is_obj_create_cmd */ 1304 WARN_ON(true); 1305 break; 1306 } 1307 } 1308 1309 static int devx_handle_mkey_indirect(struct devx_obj *obj, 1310 struct mlx5_ib_dev *dev, 1311 void *in, void *out) 1312 { 1313 struct mlx5_ib_mkey *mkey = &obj->mkey; 1314 void *mkc; 1315 u8 key; 1316 1317 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); 1318 key = MLX5_GET(mkc, mkc, mkey_7_0); 1319 mkey->key = mlx5_idx_to_mkey( 1320 MLX5_GET(create_mkey_out, out, mkey_index)) | key; 1321 mkey->type = MLX5_MKEY_INDIRECT_DEVX; 1322 mkey->ndescs = MLX5_GET(mkc, mkc, translations_octword_size); 1323 init_waitqueue_head(&mkey->wait); 1324 1325 return mlx5r_store_odp_mkey(dev, mkey); 1326 } 1327 1328 static int devx_handle_mkey_create(struct mlx5_ib_dev *dev, 1329 struct devx_obj *obj, 1330 void *in, int in_len) 1331 { 1332 int min_len = MLX5_BYTE_OFF(create_mkey_in, memory_key_mkey_entry) + 1333 MLX5_FLD_SZ_BYTES(create_mkey_in, 1334 memory_key_mkey_entry); 1335 void *mkc; 1336 u8 access_mode; 1337 1338 if (in_len < min_len) 1339 return -EINVAL; 1340 1341 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); 1342 1343 access_mode = MLX5_GET(mkc, mkc, access_mode_1_0); 1344 access_mode |= MLX5_GET(mkc, mkc, access_mode_4_2) << 2; 1345 1346 if (access_mode == MLX5_MKC_ACCESS_MODE_KLMS || 1347 access_mode == MLX5_MKC_ACCESS_MODE_KSM) { 1348 if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING)) 1349 obj->flags |= DEVX_OBJ_FLAGS_INDIRECT_MKEY; 1350 return 0; 1351 } 1352 1353 MLX5_SET(create_mkey_in, in, mkey_umem_valid, 1); 1354 return 0; 1355 } 1356 1357 static void devx_cleanup_subscription(struct mlx5_ib_dev *dev, 1358 struct devx_event_subscription *sub) 1359 { 1360 struct devx_event *event; 1361 struct devx_obj_event *xa_val_level2; 1362 1363 if (sub->is_cleaned) 1364 return; 1365 1366 sub->is_cleaned = 1; 1367 list_del_rcu(&sub->xa_list); 1368 1369 if (list_empty(&sub->obj_list)) 1370 return; 1371 1372 list_del_rcu(&sub->obj_list); 1373 /* check whether key level 1 for this obj_sub_list is empty */ 1374 event = xa_load(&dev->devx_event_table.event_xa, 1375 sub->xa_key_level1); 1376 WARN_ON(!event); 1377 1378 xa_val_level2 = xa_load(&event->object_ids, sub->xa_key_level2); 1379 if (list_empty(&xa_val_level2->obj_sub_list)) { 1380 xa_erase(&event->object_ids, 1381 sub->xa_key_level2); 1382 kfree_rcu(xa_val_level2, rcu); 1383 } 1384 } 1385 1386 static int devx_obj_cleanup(struct ib_uobject *uobject, 1387 enum rdma_remove_reason why, 1388 struct uverbs_attr_bundle *attrs) 1389 { 1390 u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)]; 1391 struct mlx5_devx_event_table *devx_event_table; 1392 struct devx_obj *obj = uobject->object; 1393 struct devx_event_subscription *sub_entry, *tmp; 1394 struct mlx5_ib_dev *dev; 1395 int ret; 1396 1397 dev = mlx5_udata_to_mdev(&attrs->driver_udata); 1398 if (obj->flags & DEVX_OBJ_FLAGS_INDIRECT_MKEY && 1399 xa_erase(&obj->ib_dev->odp_mkeys, 1400 mlx5_base_mkey(obj->mkey.key))) 1401 /* 1402 * The pagefault_single_data_segment() does commands against 1403 * the mmkey, we must wait for that to stop before freeing the 1404 * mkey, as another allocation could get the same mkey #. 1405 */ 1406 mlx5r_deref_wait_odp_mkey(&obj->mkey); 1407 1408 if (obj->flags & DEVX_OBJ_FLAGS_DCT) 1409 ret = mlx5_core_destroy_dct(obj->ib_dev, &obj->core_dct); 1410 else if (obj->flags & DEVX_OBJ_FLAGS_CQ) 1411 ret = mlx5_core_destroy_cq(obj->ib_dev->mdev, &obj->core_cq); 1412 else 1413 ret = mlx5_cmd_exec(obj->ib_dev->mdev, obj->dinbox, 1414 obj->dinlen, out, sizeof(out)); 1415 if (ret) 1416 return ret; 1417 1418 devx_event_table = &dev->devx_event_table; 1419 1420 mutex_lock(&devx_event_table->event_xa_lock); 1421 list_for_each_entry_safe(sub_entry, tmp, &obj->event_sub, obj_list) 1422 devx_cleanup_subscription(dev, sub_entry); 1423 mutex_unlock(&devx_event_table->event_xa_lock); 1424 1425 kfree(obj); 1426 return ret; 1427 } 1428 1429 static void devx_cq_comp(struct mlx5_core_cq *mcq, struct mlx5_eqe *eqe) 1430 { 1431 struct devx_obj *obj = container_of(mcq, struct devx_obj, core_cq); 1432 struct mlx5_devx_event_table *table; 1433 struct devx_event *event; 1434 struct devx_obj_event *obj_event; 1435 u32 obj_id = mcq->cqn; 1436 1437 table = &obj->ib_dev->devx_event_table; 1438 rcu_read_lock(); 1439 event = xa_load(&table->event_xa, MLX5_EVENT_TYPE_COMP); 1440 if (!event) 1441 goto out; 1442 1443 obj_event = xa_load(&event->object_ids, obj_id); 1444 if (!obj_event) 1445 goto out; 1446 1447 dispatch_event_fd(&obj_event->obj_sub_list, eqe); 1448 out: 1449 rcu_read_unlock(); 1450 } 1451 1452 static bool is_apu_cq(struct mlx5_ib_dev *dev, const void *in) 1453 { 1454 if (!MLX5_CAP_GEN(dev->mdev, apu) || 1455 !MLX5_GET(cqc, MLX5_ADDR_OF(create_cq_in, in, cq_context), apu_cq)) 1456 return false; 1457 1458 return true; 1459 } 1460 1461 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_CREATE)( 1462 struct uverbs_attr_bundle *attrs) 1463 { 1464 void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN); 1465 int cmd_out_len = uverbs_attr_get_len(attrs, 1466 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT); 1467 int cmd_in_len = uverbs_attr_get_len(attrs, 1468 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN); 1469 void *cmd_out; 1470 struct ib_uobject *uobj = uverbs_attr_get_uobject( 1471 attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE); 1472 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( 1473 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); 1474 struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); 1475 u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)]; 1476 struct devx_obj *obj; 1477 u16 obj_type = 0; 1478 int err, err2 = 0; 1479 int uid; 1480 u32 obj_id; 1481 u16 opcode; 1482 1483 if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id)) 1484 return -EINVAL; 1485 1486 uid = devx_get_uid(c, cmd_in); 1487 if (uid < 0) 1488 return uid; 1489 1490 if (!devx_is_obj_create_cmd(cmd_in, &opcode)) 1491 return -EINVAL; 1492 1493 cmd_out = uverbs_zalloc(attrs, cmd_out_len); 1494 if (IS_ERR(cmd_out)) 1495 return PTR_ERR(cmd_out); 1496 1497 obj = kzalloc(sizeof(struct devx_obj), GFP_KERNEL); 1498 if (!obj) 1499 return -ENOMEM; 1500 1501 MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); 1502 if (opcode == MLX5_CMD_OP_CREATE_MKEY) { 1503 err = devx_handle_mkey_create(dev, obj, cmd_in, cmd_in_len); 1504 if (err) 1505 goto obj_free; 1506 } else { 1507 devx_set_umem_valid(cmd_in); 1508 } 1509 1510 if (opcode == MLX5_CMD_OP_CREATE_DCT) { 1511 obj->flags |= DEVX_OBJ_FLAGS_DCT; 1512 err = mlx5_core_create_dct(dev, &obj->core_dct, cmd_in, 1513 cmd_in_len, cmd_out, cmd_out_len); 1514 } else if (opcode == MLX5_CMD_OP_CREATE_CQ && 1515 !is_apu_cq(dev, cmd_in)) { 1516 obj->flags |= DEVX_OBJ_FLAGS_CQ; 1517 obj->core_cq.comp = devx_cq_comp; 1518 err = mlx5_create_cq(dev->mdev, &obj->core_cq, 1519 cmd_in, cmd_in_len, cmd_out, 1520 cmd_out_len); 1521 } else { 1522 err = mlx5_cmd_do(dev->mdev, cmd_in, cmd_in_len, 1523 cmd_out, cmd_out_len); 1524 } 1525 1526 if (err == -EREMOTEIO) 1527 err2 = uverbs_copy_to(attrs, 1528 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, 1529 cmd_out, cmd_out_len); 1530 if (err) 1531 goto obj_free; 1532 1533 if (opcode == MLX5_CMD_OP_ALLOC_FLOW_COUNTER) { 1534 u32 bulk = MLX5_GET(alloc_flow_counter_in, 1535 cmd_in, 1536 flow_counter_bulk_log_size); 1537 1538 if (bulk) 1539 bulk = 1 << bulk; 1540 else 1541 bulk = 128UL * MLX5_GET(alloc_flow_counter_in, 1542 cmd_in, 1543 flow_counter_bulk); 1544 obj->flow_counter_bulk_size = bulk; 1545 } 1546 1547 uobj->object = obj; 1548 INIT_LIST_HEAD(&obj->event_sub); 1549 obj->ib_dev = dev; 1550 devx_obj_build_destroy_cmd(cmd_in, cmd_out, obj->dinbox, &obj->dinlen, 1551 &obj_id); 1552 WARN_ON(obj->dinlen > MLX5_MAX_DESTROY_INBOX_SIZE_DW * sizeof(u32)); 1553 1554 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, cmd_out, cmd_out_len); 1555 if (err) 1556 goto obj_destroy; 1557 1558 if (opcode == MLX5_CMD_OP_CREATE_GENERAL_OBJECT) 1559 obj_type = MLX5_GET(general_obj_in_cmd_hdr, cmd_in, obj_type); 1560 obj->obj_id = get_enc_obj_id(opcode | obj_type << 16, obj_id); 1561 1562 if (obj->flags & DEVX_OBJ_FLAGS_INDIRECT_MKEY) { 1563 err = devx_handle_mkey_indirect(obj, dev, cmd_in, cmd_out); 1564 if (err) 1565 goto obj_destroy; 1566 } 1567 return 0; 1568 1569 obj_destroy: 1570 if (obj->flags & DEVX_OBJ_FLAGS_DCT) 1571 mlx5_core_destroy_dct(obj->ib_dev, &obj->core_dct); 1572 else if (obj->flags & DEVX_OBJ_FLAGS_CQ) 1573 mlx5_core_destroy_cq(obj->ib_dev->mdev, &obj->core_cq); 1574 else 1575 mlx5_cmd_exec(obj->ib_dev->mdev, obj->dinbox, obj->dinlen, out, 1576 sizeof(out)); 1577 obj_free: 1578 kfree(obj); 1579 return err2 ?: err; 1580 } 1581 1582 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_MODIFY)( 1583 struct uverbs_attr_bundle *attrs) 1584 { 1585 void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN); 1586 int cmd_out_len = uverbs_attr_get_len(attrs, 1587 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT); 1588 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, 1589 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE); 1590 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( 1591 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); 1592 struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device); 1593 void *cmd_out; 1594 int err, err2; 1595 int uid; 1596 1597 if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id)) 1598 return -EINVAL; 1599 1600 uid = devx_get_uid(c, cmd_in); 1601 if (uid < 0) 1602 return uid; 1603 1604 if (!devx_is_obj_modify_cmd(cmd_in)) 1605 return -EINVAL; 1606 1607 if (!devx_is_valid_obj_id(attrs, uobj, cmd_in)) 1608 return -EINVAL; 1609 1610 cmd_out = uverbs_zalloc(attrs, cmd_out_len); 1611 if (IS_ERR(cmd_out)) 1612 return PTR_ERR(cmd_out); 1613 1614 MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); 1615 devx_set_umem_valid(cmd_in); 1616 1617 err = mlx5_cmd_do(mdev->mdev, cmd_in, 1618 uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN), 1619 cmd_out, cmd_out_len); 1620 if (err && err != -EREMOTEIO) 1621 return err; 1622 1623 err2 = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT, 1624 cmd_out, cmd_out_len); 1625 1626 return err2 ?: err; 1627 } 1628 1629 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_QUERY)( 1630 struct uverbs_attr_bundle *attrs) 1631 { 1632 void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN); 1633 int cmd_out_len = uverbs_attr_get_len(attrs, 1634 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT); 1635 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, 1636 MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE); 1637 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( 1638 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); 1639 void *cmd_out; 1640 int err, err2; 1641 int uid; 1642 struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device); 1643 1644 if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id)) 1645 return -EINVAL; 1646 1647 uid = devx_get_uid(c, cmd_in); 1648 if (uid < 0) 1649 return uid; 1650 1651 if (!devx_is_obj_query_cmd(cmd_in)) 1652 return -EINVAL; 1653 1654 if (!devx_is_valid_obj_id(attrs, uobj, cmd_in)) 1655 return -EINVAL; 1656 1657 cmd_out = uverbs_zalloc(attrs, cmd_out_len); 1658 if (IS_ERR(cmd_out)) 1659 return PTR_ERR(cmd_out); 1660 1661 MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); 1662 err = mlx5_cmd_do(mdev->mdev, cmd_in, 1663 uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN), 1664 cmd_out, cmd_out_len); 1665 if (err && err != -EREMOTEIO) 1666 return err; 1667 1668 err2 = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT, 1669 cmd_out, cmd_out_len); 1670 1671 return err2 ?: err; 1672 } 1673 1674 struct devx_async_event_queue { 1675 spinlock_t lock; 1676 wait_queue_head_t poll_wait; 1677 struct list_head event_list; 1678 atomic_t bytes_in_use; 1679 u8 is_destroyed:1; 1680 }; 1681 1682 struct devx_async_cmd_event_file { 1683 struct ib_uobject uobj; 1684 struct devx_async_event_queue ev_queue; 1685 struct mlx5_async_ctx async_ctx; 1686 }; 1687 1688 static void devx_init_event_queue(struct devx_async_event_queue *ev_queue) 1689 { 1690 spin_lock_init(&ev_queue->lock); 1691 INIT_LIST_HEAD(&ev_queue->event_list); 1692 init_waitqueue_head(&ev_queue->poll_wait); 1693 atomic_set(&ev_queue->bytes_in_use, 0); 1694 ev_queue->is_destroyed = 0; 1695 } 1696 1697 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC)( 1698 struct uverbs_attr_bundle *attrs) 1699 { 1700 struct devx_async_cmd_event_file *ev_file; 1701 1702 struct ib_uobject *uobj = uverbs_attr_get_uobject( 1703 attrs, MLX5_IB_ATTR_DEVX_ASYNC_CMD_FD_ALLOC_HANDLE); 1704 struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata); 1705 1706 ev_file = container_of(uobj, struct devx_async_cmd_event_file, 1707 uobj); 1708 devx_init_event_queue(&ev_file->ev_queue); 1709 mlx5_cmd_init_async_ctx(mdev->mdev, &ev_file->async_ctx); 1710 return 0; 1711 } 1712 1713 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC)( 1714 struct uverbs_attr_bundle *attrs) 1715 { 1716 struct ib_uobject *uobj = uverbs_attr_get_uobject( 1717 attrs, MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE); 1718 struct devx_async_event_file *ev_file; 1719 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( 1720 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); 1721 struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); 1722 u32 flags; 1723 int err; 1724 1725 err = uverbs_get_flags32(&flags, attrs, 1726 MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS, 1727 MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA); 1728 1729 if (err) 1730 return err; 1731 1732 ev_file = container_of(uobj, struct devx_async_event_file, 1733 uobj); 1734 spin_lock_init(&ev_file->lock); 1735 INIT_LIST_HEAD(&ev_file->event_list); 1736 init_waitqueue_head(&ev_file->poll_wait); 1737 if (flags & MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA) 1738 ev_file->omit_data = 1; 1739 INIT_LIST_HEAD(&ev_file->subscribed_events_list); 1740 ev_file->dev = dev; 1741 get_device(&dev->ib_dev.dev); 1742 return 0; 1743 } 1744 1745 static void devx_query_callback(int status, struct mlx5_async_work *context) 1746 { 1747 struct devx_async_data *async_data = 1748 container_of(context, struct devx_async_data, cb_work); 1749 struct devx_async_cmd_event_file *ev_file = async_data->ev_file; 1750 struct devx_async_event_queue *ev_queue = &ev_file->ev_queue; 1751 unsigned long flags; 1752 1753 /* 1754 * Note that if the struct devx_async_cmd_event_file uobj begins to be 1755 * destroyed it will block at mlx5_cmd_cleanup_async_ctx() until this 1756 * routine returns, ensuring that it always remains valid here. 1757 */ 1758 spin_lock_irqsave(&ev_queue->lock, flags); 1759 list_add_tail(&async_data->list, &ev_queue->event_list); 1760 spin_unlock_irqrestore(&ev_queue->lock, flags); 1761 1762 wake_up_interruptible(&ev_queue->poll_wait); 1763 } 1764 1765 #define MAX_ASYNC_BYTES_IN_USE (1024 * 1024) /* 1MB */ 1766 1767 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY)( 1768 struct uverbs_attr_bundle *attrs) 1769 { 1770 void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, 1771 MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_CMD_IN); 1772 struct ib_uobject *uobj = uverbs_attr_get_uobject( 1773 attrs, 1774 MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_HANDLE); 1775 u16 cmd_out_len; 1776 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( 1777 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); 1778 struct ib_uobject *fd_uobj; 1779 int err; 1780 int uid; 1781 struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device); 1782 struct devx_async_cmd_event_file *ev_file; 1783 struct devx_async_data *async_data; 1784 1785 if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id)) 1786 return -EINVAL; 1787 1788 uid = devx_get_uid(c, cmd_in); 1789 if (uid < 0) 1790 return uid; 1791 1792 if (!devx_is_obj_query_cmd(cmd_in)) 1793 return -EINVAL; 1794 1795 err = uverbs_get_const(&cmd_out_len, attrs, 1796 MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_OUT_LEN); 1797 if (err) 1798 return err; 1799 1800 if (!devx_is_valid_obj_id(attrs, uobj, cmd_in)) 1801 return -EINVAL; 1802 1803 fd_uobj = uverbs_attr_get_uobject(attrs, 1804 MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_FD); 1805 if (IS_ERR(fd_uobj)) 1806 return PTR_ERR(fd_uobj); 1807 1808 ev_file = container_of(fd_uobj, struct devx_async_cmd_event_file, 1809 uobj); 1810 1811 if (atomic_add_return(cmd_out_len, &ev_file->ev_queue.bytes_in_use) > 1812 MAX_ASYNC_BYTES_IN_USE) { 1813 atomic_sub(cmd_out_len, &ev_file->ev_queue.bytes_in_use); 1814 return -EAGAIN; 1815 } 1816 1817 async_data = kvzalloc(struct_size(async_data, hdr.out_data, 1818 cmd_out_len), GFP_KERNEL); 1819 if (!async_data) { 1820 err = -ENOMEM; 1821 goto sub_bytes; 1822 } 1823 1824 err = uverbs_copy_from(&async_data->hdr.wr_id, attrs, 1825 MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_WR_ID); 1826 if (err) 1827 goto free_async; 1828 1829 async_data->cmd_out_len = cmd_out_len; 1830 async_data->mdev = mdev; 1831 async_data->ev_file = ev_file; 1832 1833 MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); 1834 err = mlx5_cmd_exec_cb(&ev_file->async_ctx, cmd_in, 1835 uverbs_attr_get_len(attrs, 1836 MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_CMD_IN), 1837 async_data->hdr.out_data, 1838 async_data->cmd_out_len, 1839 devx_query_callback, &async_data->cb_work); 1840 1841 if (err) 1842 goto free_async; 1843 1844 return 0; 1845 1846 free_async: 1847 kvfree(async_data); 1848 sub_bytes: 1849 atomic_sub(cmd_out_len, &ev_file->ev_queue.bytes_in_use); 1850 return err; 1851 } 1852 1853 static void 1854 subscribe_event_xa_dealloc(struct mlx5_devx_event_table *devx_event_table, 1855 u32 key_level1, 1856 bool is_level2, 1857 u32 key_level2) 1858 { 1859 struct devx_event *event; 1860 struct devx_obj_event *xa_val_level2; 1861 1862 /* Level 1 is valid for future use, no need to free */ 1863 if (!is_level2) 1864 return; 1865 1866 event = xa_load(&devx_event_table->event_xa, key_level1); 1867 WARN_ON(!event); 1868 1869 xa_val_level2 = xa_load(&event->object_ids, 1870 key_level2); 1871 if (list_empty(&xa_val_level2->obj_sub_list)) { 1872 xa_erase(&event->object_ids, 1873 key_level2); 1874 kfree_rcu(xa_val_level2, rcu); 1875 } 1876 } 1877 1878 static int 1879 subscribe_event_xa_alloc(struct mlx5_devx_event_table *devx_event_table, 1880 u32 key_level1, 1881 bool is_level2, 1882 u32 key_level2) 1883 { 1884 struct devx_obj_event *obj_event; 1885 struct devx_event *event; 1886 int err; 1887 1888 event = xa_load(&devx_event_table->event_xa, key_level1); 1889 if (!event) { 1890 event = kzalloc(sizeof(*event), GFP_KERNEL); 1891 if (!event) 1892 return -ENOMEM; 1893 1894 INIT_LIST_HEAD(&event->unaffiliated_list); 1895 xa_init(&event->object_ids); 1896 1897 err = xa_insert(&devx_event_table->event_xa, 1898 key_level1, 1899 event, 1900 GFP_KERNEL); 1901 if (err) { 1902 kfree(event); 1903 return err; 1904 } 1905 } 1906 1907 if (!is_level2) 1908 return 0; 1909 1910 obj_event = xa_load(&event->object_ids, key_level2); 1911 if (!obj_event) { 1912 obj_event = kzalloc(sizeof(*obj_event), GFP_KERNEL); 1913 if (!obj_event) 1914 /* Level1 is valid for future use, no need to free */ 1915 return -ENOMEM; 1916 1917 err = xa_insert(&event->object_ids, 1918 key_level2, 1919 obj_event, 1920 GFP_KERNEL); 1921 if (err) { 1922 kfree(obj_event); 1923 return err; 1924 } 1925 INIT_LIST_HEAD(&obj_event->obj_sub_list); 1926 } 1927 1928 return 0; 1929 } 1930 1931 static bool is_valid_events_legacy(int num_events, u16 *event_type_num_list, 1932 struct devx_obj *obj) 1933 { 1934 int i; 1935 1936 for (i = 0; i < num_events; i++) { 1937 if (obj) { 1938 if (!is_legacy_obj_event_num(event_type_num_list[i])) 1939 return false; 1940 } else if (!is_legacy_unaffiliated_event_num( 1941 event_type_num_list[i])) { 1942 return false; 1943 } 1944 } 1945 1946 return true; 1947 } 1948 1949 #define MAX_SUPP_EVENT_NUM 255 1950 static bool is_valid_events(struct mlx5_core_dev *dev, 1951 int num_events, u16 *event_type_num_list, 1952 struct devx_obj *obj) 1953 { 1954 __be64 *aff_events; 1955 __be64 *unaff_events; 1956 int mask_entry; 1957 int mask_bit; 1958 int i; 1959 1960 if (MLX5_CAP_GEN(dev, event_cap)) { 1961 aff_events = MLX5_CAP_DEV_EVENT(dev, 1962 user_affiliated_events); 1963 unaff_events = MLX5_CAP_DEV_EVENT(dev, 1964 user_unaffiliated_events); 1965 } else { 1966 return is_valid_events_legacy(num_events, event_type_num_list, 1967 obj); 1968 } 1969 1970 for (i = 0; i < num_events; i++) { 1971 if (event_type_num_list[i] > MAX_SUPP_EVENT_NUM) 1972 return false; 1973 1974 mask_entry = event_type_num_list[i] / 64; 1975 mask_bit = event_type_num_list[i] % 64; 1976 1977 if (obj) { 1978 /* CQ completion */ 1979 if (event_type_num_list[i] == 0) 1980 continue; 1981 1982 if (!(be64_to_cpu(aff_events[mask_entry]) & 1983 (1ull << mask_bit))) 1984 return false; 1985 1986 continue; 1987 } 1988 1989 if (!(be64_to_cpu(unaff_events[mask_entry]) & 1990 (1ull << mask_bit))) 1991 return false; 1992 } 1993 1994 return true; 1995 } 1996 1997 #define MAX_NUM_EVENTS 16 1998 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT)( 1999 struct uverbs_attr_bundle *attrs) 2000 { 2001 struct ib_uobject *devx_uobj = uverbs_attr_get_uobject( 2002 attrs, 2003 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_OBJ_HANDLE); 2004 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( 2005 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); 2006 struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); 2007 struct ib_uobject *fd_uobj; 2008 struct devx_obj *obj = NULL; 2009 struct devx_async_event_file *ev_file; 2010 struct mlx5_devx_event_table *devx_event_table = &dev->devx_event_table; 2011 u16 *event_type_num_list; 2012 struct devx_event_subscription *event_sub, *tmp_sub; 2013 struct list_head sub_list; 2014 int redirect_fd; 2015 bool use_eventfd = false; 2016 int num_events; 2017 u16 obj_type = 0; 2018 u64 cookie = 0; 2019 u32 obj_id = 0; 2020 int err; 2021 int i; 2022 2023 if (!c->devx_uid) 2024 return -EINVAL; 2025 2026 if (!IS_ERR(devx_uobj)) { 2027 obj = (struct devx_obj *)devx_uobj->object; 2028 if (obj) 2029 obj_id = get_dec_obj_id(obj->obj_id); 2030 } 2031 2032 fd_uobj = uverbs_attr_get_uobject(attrs, 2033 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_HANDLE); 2034 if (IS_ERR(fd_uobj)) 2035 return PTR_ERR(fd_uobj); 2036 2037 ev_file = container_of(fd_uobj, struct devx_async_event_file, 2038 uobj); 2039 2040 if (uverbs_attr_is_valid(attrs, 2041 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM)) { 2042 err = uverbs_copy_from(&redirect_fd, attrs, 2043 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM); 2044 if (err) 2045 return err; 2046 2047 use_eventfd = true; 2048 } 2049 2050 if (uverbs_attr_is_valid(attrs, 2051 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE)) { 2052 if (use_eventfd) 2053 return -EINVAL; 2054 2055 err = uverbs_copy_from(&cookie, attrs, 2056 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE); 2057 if (err) 2058 return err; 2059 } 2060 2061 num_events = uverbs_attr_ptr_get_array_size( 2062 attrs, MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST, 2063 sizeof(u16)); 2064 2065 if (num_events < 0) 2066 return num_events; 2067 2068 if (num_events > MAX_NUM_EVENTS) 2069 return -EINVAL; 2070 2071 event_type_num_list = uverbs_attr_get_alloced_ptr(attrs, 2072 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST); 2073 2074 if (!is_valid_events(dev->mdev, num_events, event_type_num_list, obj)) 2075 return -EINVAL; 2076 2077 INIT_LIST_HEAD(&sub_list); 2078 2079 /* Protect from concurrent subscriptions to same XA entries to allow 2080 * both to succeed 2081 */ 2082 mutex_lock(&devx_event_table->event_xa_lock); 2083 for (i = 0; i < num_events; i++) { 2084 u32 key_level1; 2085 2086 if (obj) 2087 obj_type = get_dec_obj_type(obj, 2088 event_type_num_list[i]); 2089 key_level1 = event_type_num_list[i] | obj_type << 16; 2090 2091 err = subscribe_event_xa_alloc(devx_event_table, 2092 key_level1, 2093 obj, 2094 obj_id); 2095 if (err) 2096 goto err; 2097 2098 event_sub = kzalloc(sizeof(*event_sub), GFP_KERNEL); 2099 if (!event_sub) { 2100 err = -ENOMEM; 2101 goto err; 2102 } 2103 2104 list_add_tail(&event_sub->event_list, &sub_list); 2105 uverbs_uobject_get(&ev_file->uobj); 2106 if (use_eventfd) { 2107 event_sub->eventfd = 2108 eventfd_ctx_fdget(redirect_fd); 2109 2110 if (IS_ERR(event_sub->eventfd)) { 2111 err = PTR_ERR(event_sub->eventfd); 2112 event_sub->eventfd = NULL; 2113 goto err; 2114 } 2115 } 2116 2117 event_sub->cookie = cookie; 2118 event_sub->ev_file = ev_file; 2119 /* May be needed upon cleanup the devx object/subscription */ 2120 event_sub->xa_key_level1 = key_level1; 2121 event_sub->xa_key_level2 = obj_id; 2122 INIT_LIST_HEAD(&event_sub->obj_list); 2123 } 2124 2125 /* Once all the allocations and the XA data insertions were done we 2126 * can go ahead and add all the subscriptions to the relevant lists 2127 * without concern of a failure. 2128 */ 2129 list_for_each_entry_safe(event_sub, tmp_sub, &sub_list, event_list) { 2130 struct devx_event *event; 2131 struct devx_obj_event *obj_event; 2132 2133 list_del_init(&event_sub->event_list); 2134 2135 spin_lock_irq(&ev_file->lock); 2136 list_add_tail_rcu(&event_sub->file_list, 2137 &ev_file->subscribed_events_list); 2138 spin_unlock_irq(&ev_file->lock); 2139 2140 event = xa_load(&devx_event_table->event_xa, 2141 event_sub->xa_key_level1); 2142 WARN_ON(!event); 2143 2144 if (!obj) { 2145 list_add_tail_rcu(&event_sub->xa_list, 2146 &event->unaffiliated_list); 2147 continue; 2148 } 2149 2150 obj_event = xa_load(&event->object_ids, obj_id); 2151 WARN_ON(!obj_event); 2152 list_add_tail_rcu(&event_sub->xa_list, 2153 &obj_event->obj_sub_list); 2154 list_add_tail_rcu(&event_sub->obj_list, 2155 &obj->event_sub); 2156 } 2157 2158 mutex_unlock(&devx_event_table->event_xa_lock); 2159 return 0; 2160 2161 err: 2162 list_for_each_entry_safe(event_sub, tmp_sub, &sub_list, event_list) { 2163 list_del(&event_sub->event_list); 2164 2165 subscribe_event_xa_dealloc(devx_event_table, 2166 event_sub->xa_key_level1, 2167 obj, 2168 obj_id); 2169 2170 if (event_sub->eventfd) 2171 eventfd_ctx_put(event_sub->eventfd); 2172 uverbs_uobject_put(&event_sub->ev_file->uobj); 2173 kfree(event_sub); 2174 } 2175 2176 mutex_unlock(&devx_event_table->event_xa_lock); 2177 return err; 2178 } 2179 2180 static int devx_umem_get(struct mlx5_ib_dev *dev, struct ib_ucontext *ucontext, 2181 struct uverbs_attr_bundle *attrs, 2182 struct devx_umem *obj, u32 access_flags) 2183 { 2184 u64 addr; 2185 size_t size; 2186 int err; 2187 2188 if (uverbs_copy_from(&addr, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR) || 2189 uverbs_copy_from(&size, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_LEN)) 2190 return -EFAULT; 2191 2192 err = ib_check_mr_access(&dev->ib_dev, access_flags); 2193 if (err) 2194 return err; 2195 2196 if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_DMABUF_FD)) { 2197 struct ib_umem_dmabuf *umem_dmabuf; 2198 int dmabuf_fd; 2199 2200 err = uverbs_get_raw_fd(&dmabuf_fd, attrs, 2201 MLX5_IB_ATTR_DEVX_UMEM_REG_DMABUF_FD); 2202 if (err) 2203 return -EFAULT; 2204 2205 umem_dmabuf = ib_umem_dmabuf_get_pinned( 2206 &dev->ib_dev, addr, size, dmabuf_fd, access_flags); 2207 if (IS_ERR(umem_dmabuf)) 2208 return PTR_ERR(umem_dmabuf); 2209 obj->umem = &umem_dmabuf->umem; 2210 } else { 2211 obj->umem = ib_umem_get(&dev->ib_dev, addr, size, access_flags); 2212 if (IS_ERR(obj->umem)) 2213 return PTR_ERR(obj->umem); 2214 } 2215 return 0; 2216 } 2217 2218 static unsigned int devx_umem_find_best_pgsize(struct ib_umem *umem, 2219 unsigned long pgsz_bitmap) 2220 { 2221 unsigned long page_size; 2222 2223 /* Don't bother checking larger page sizes as offset must be zero and 2224 * total DEVX umem length must be equal to total umem length. 2225 */ 2226 pgsz_bitmap &= GENMASK_ULL(max_t(u64, order_base_2(umem->length), 2227 PAGE_SHIFT), 2228 MLX5_ADAPTER_PAGE_SHIFT); 2229 if (!pgsz_bitmap) 2230 return 0; 2231 2232 page_size = ib_umem_find_best_pgoff(umem, pgsz_bitmap, U64_MAX); 2233 if (!page_size) 2234 return 0; 2235 2236 /* If the page_size is less than the CPU page size then we can use the 2237 * offset and create a umem which is a subset of the page list. 2238 * For larger page sizes we can't be sure the DMA list reflects the 2239 * VA so we must ensure that the umem extent is exactly equal to the 2240 * page list. Reduce the page size until one of these cases is true. 2241 */ 2242 while ((ib_umem_dma_offset(umem, page_size) != 0 || 2243 (umem->length % page_size) != 0) && 2244 page_size > PAGE_SIZE) 2245 page_size /= 2; 2246 2247 return page_size; 2248 } 2249 2250 static int devx_umem_reg_cmd_alloc(struct mlx5_ib_dev *dev, 2251 struct uverbs_attr_bundle *attrs, 2252 struct devx_umem *obj, 2253 struct devx_umem_reg_cmd *cmd, 2254 int access) 2255 { 2256 unsigned long pgsz_bitmap; 2257 unsigned int page_size; 2258 __be64 *mtt; 2259 void *umem; 2260 int ret; 2261 2262 /* 2263 * If the user does not pass in pgsz_bitmap then the user promises not 2264 * to use umem_offset!=0 in any commands that allocate on top of the 2265 * umem. 2266 * 2267 * If the user wants to use a umem_offset then it must pass in 2268 * pgsz_bitmap which guides the maximum page size and thus maximum 2269 * object alignment inside the umem. See the PRM. 2270 * 2271 * Users are not allowed to use IOVA here, mkeys are not supported on 2272 * umem. 2273 */ 2274 ret = uverbs_get_const_default(&pgsz_bitmap, attrs, 2275 MLX5_IB_ATTR_DEVX_UMEM_REG_PGSZ_BITMAP, 2276 GENMASK_ULL(63, 2277 min(PAGE_SHIFT, MLX5_ADAPTER_PAGE_SHIFT))); 2278 if (ret) 2279 return ret; 2280 2281 page_size = devx_umem_find_best_pgsize(obj->umem, pgsz_bitmap); 2282 if (!page_size) 2283 return -EINVAL; 2284 2285 cmd->inlen = MLX5_ST_SZ_BYTES(create_umem_in) + 2286 (MLX5_ST_SZ_BYTES(mtt) * 2287 ib_umem_num_dma_blocks(obj->umem, page_size)); 2288 cmd->in = uverbs_zalloc(attrs, cmd->inlen); 2289 if (IS_ERR(cmd->in)) 2290 return PTR_ERR(cmd->in); 2291 2292 umem = MLX5_ADDR_OF(create_umem_in, cmd->in, umem); 2293 mtt = (__be64 *)MLX5_ADDR_OF(umem, umem, mtt); 2294 2295 MLX5_SET(create_umem_in, cmd->in, opcode, MLX5_CMD_OP_CREATE_UMEM); 2296 MLX5_SET64(umem, umem, num_of_mtt, 2297 ib_umem_num_dma_blocks(obj->umem, page_size)); 2298 MLX5_SET(umem, umem, log_page_size, 2299 order_base_2(page_size) - MLX5_ADAPTER_PAGE_SHIFT); 2300 MLX5_SET(umem, umem, page_offset, 2301 ib_umem_dma_offset(obj->umem, page_size)); 2302 2303 if (mlx5_umem_needs_ats(dev, obj->umem, access)) 2304 MLX5_SET(umem, umem, ats, 1); 2305 2306 mlx5_ib_populate_pas(obj->umem, page_size, mtt, 2307 (obj->umem->writable ? MLX5_IB_MTT_WRITE : 0) | 2308 MLX5_IB_MTT_READ); 2309 return 0; 2310 } 2311 2312 static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_UMEM_REG)( 2313 struct uverbs_attr_bundle *attrs) 2314 { 2315 struct devx_umem_reg_cmd cmd; 2316 struct devx_umem *obj; 2317 struct ib_uobject *uobj = uverbs_attr_get_uobject( 2318 attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE); 2319 u32 obj_id; 2320 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( 2321 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); 2322 struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); 2323 int access_flags; 2324 int err; 2325 2326 if (!c->devx_uid) 2327 return -EINVAL; 2328 2329 err = uverbs_get_flags32(&access_flags, attrs, 2330 MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS, 2331 IB_ACCESS_LOCAL_WRITE | 2332 IB_ACCESS_REMOTE_WRITE | 2333 IB_ACCESS_REMOTE_READ | 2334 IB_ACCESS_RELAXED_ORDERING); 2335 if (err) 2336 return err; 2337 2338 obj = kzalloc(sizeof(struct devx_umem), GFP_KERNEL); 2339 if (!obj) 2340 return -ENOMEM; 2341 2342 err = devx_umem_get(dev, &c->ibucontext, attrs, obj, access_flags); 2343 if (err) 2344 goto err_obj_free; 2345 2346 err = devx_umem_reg_cmd_alloc(dev, attrs, obj, &cmd, access_flags); 2347 if (err) 2348 goto err_umem_release; 2349 2350 MLX5_SET(create_umem_in, cmd.in, uid, c->devx_uid); 2351 err = mlx5_cmd_exec(dev->mdev, cmd.in, cmd.inlen, cmd.out, 2352 sizeof(cmd.out)); 2353 if (err) 2354 goto err_umem_release; 2355 2356 obj->mdev = dev->mdev; 2357 uobj->object = obj; 2358 devx_obj_build_destroy_cmd(cmd.in, cmd.out, obj->dinbox, &obj->dinlen, &obj_id); 2359 uverbs_finalize_uobj_create(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE); 2360 2361 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, &obj_id, 2362 sizeof(obj_id)); 2363 return err; 2364 2365 err_umem_release: 2366 ib_umem_release(obj->umem); 2367 err_obj_free: 2368 kfree(obj); 2369 return err; 2370 } 2371 2372 static int devx_umem_cleanup(struct ib_uobject *uobject, 2373 enum rdma_remove_reason why, 2374 struct uverbs_attr_bundle *attrs) 2375 { 2376 struct devx_umem *obj = uobject->object; 2377 u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)]; 2378 int err; 2379 2380 err = mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out)); 2381 if (err) 2382 return err; 2383 2384 ib_umem_release(obj->umem); 2385 kfree(obj); 2386 return 0; 2387 } 2388 2389 static bool is_unaffiliated_event(struct mlx5_core_dev *dev, 2390 unsigned long event_type) 2391 { 2392 __be64 *unaff_events; 2393 int mask_entry; 2394 int mask_bit; 2395 2396 if (!MLX5_CAP_GEN(dev, event_cap)) 2397 return is_legacy_unaffiliated_event_num(event_type); 2398 2399 unaff_events = MLX5_CAP_DEV_EVENT(dev, 2400 user_unaffiliated_events); 2401 WARN_ON(event_type > MAX_SUPP_EVENT_NUM); 2402 2403 mask_entry = event_type / 64; 2404 mask_bit = event_type % 64; 2405 2406 if (!(be64_to_cpu(unaff_events[mask_entry]) & (1ull << mask_bit))) 2407 return false; 2408 2409 return true; 2410 } 2411 2412 static u32 devx_get_obj_id_from_event(unsigned long event_type, void *data) 2413 { 2414 struct mlx5_eqe *eqe = data; 2415 u32 obj_id = 0; 2416 2417 switch (event_type) { 2418 case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR: 2419 case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT: 2420 case MLX5_EVENT_TYPE_PATH_MIG: 2421 case MLX5_EVENT_TYPE_COMM_EST: 2422 case MLX5_EVENT_TYPE_SQ_DRAINED: 2423 case MLX5_EVENT_TYPE_SRQ_LAST_WQE: 2424 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: 2425 case MLX5_EVENT_TYPE_PATH_MIG_FAILED: 2426 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: 2427 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: 2428 obj_id = be32_to_cpu(eqe->data.qp_srq.qp_srq_n) & 0xffffff; 2429 break; 2430 case MLX5_EVENT_TYPE_XRQ_ERROR: 2431 obj_id = be32_to_cpu(eqe->data.xrq_err.type_xrqn) & 0xffffff; 2432 break; 2433 case MLX5_EVENT_TYPE_DCT_DRAINED: 2434 case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION: 2435 obj_id = be32_to_cpu(eqe->data.dct.dctn) & 0xffffff; 2436 break; 2437 case MLX5_EVENT_TYPE_CQ_ERROR: 2438 obj_id = be32_to_cpu(eqe->data.cq_err.cqn) & 0xffffff; 2439 break; 2440 default: 2441 obj_id = MLX5_GET(affiliated_event_header, &eqe->data, obj_id); 2442 break; 2443 } 2444 2445 return obj_id; 2446 } 2447 2448 static int deliver_event(struct devx_event_subscription *event_sub, 2449 const void *data) 2450 { 2451 struct devx_async_event_file *ev_file; 2452 struct devx_async_event_data *event_data; 2453 unsigned long flags; 2454 2455 ev_file = event_sub->ev_file; 2456 2457 if (ev_file->omit_data) { 2458 spin_lock_irqsave(&ev_file->lock, flags); 2459 if (!list_empty(&event_sub->event_list) || 2460 ev_file->is_destroyed) { 2461 spin_unlock_irqrestore(&ev_file->lock, flags); 2462 return 0; 2463 } 2464 2465 list_add_tail(&event_sub->event_list, &ev_file->event_list); 2466 spin_unlock_irqrestore(&ev_file->lock, flags); 2467 wake_up_interruptible(&ev_file->poll_wait); 2468 return 0; 2469 } 2470 2471 event_data = kzalloc(sizeof(*event_data) + sizeof(struct mlx5_eqe), 2472 GFP_ATOMIC); 2473 if (!event_data) { 2474 spin_lock_irqsave(&ev_file->lock, flags); 2475 ev_file->is_overflow_err = 1; 2476 spin_unlock_irqrestore(&ev_file->lock, flags); 2477 return -ENOMEM; 2478 } 2479 2480 event_data->hdr.cookie = event_sub->cookie; 2481 memcpy(event_data->hdr.out_data, data, sizeof(struct mlx5_eqe)); 2482 2483 spin_lock_irqsave(&ev_file->lock, flags); 2484 if (!ev_file->is_destroyed) 2485 list_add_tail(&event_data->list, &ev_file->event_list); 2486 else 2487 kfree(event_data); 2488 spin_unlock_irqrestore(&ev_file->lock, flags); 2489 wake_up_interruptible(&ev_file->poll_wait); 2490 2491 return 0; 2492 } 2493 2494 static void dispatch_event_fd(struct list_head *fd_list, 2495 const void *data) 2496 { 2497 struct devx_event_subscription *item; 2498 2499 list_for_each_entry_rcu(item, fd_list, xa_list) { 2500 if (item->eventfd) 2501 eventfd_signal(item->eventfd); 2502 else 2503 deliver_event(item, data); 2504 } 2505 } 2506 2507 static int devx_event_notifier(struct notifier_block *nb, 2508 unsigned long event_type, void *data) 2509 { 2510 struct mlx5_devx_event_table *table; 2511 struct mlx5_ib_dev *dev; 2512 struct devx_event *event; 2513 struct devx_obj_event *obj_event; 2514 u16 obj_type = 0; 2515 bool is_unaffiliated; 2516 u32 obj_id; 2517 2518 /* Explicit filtering to kernel events which may occur frequently */ 2519 if (event_type == MLX5_EVENT_TYPE_CMD || 2520 event_type == MLX5_EVENT_TYPE_PAGE_REQUEST) 2521 return NOTIFY_OK; 2522 2523 table = container_of(nb, struct mlx5_devx_event_table, devx_nb.nb); 2524 dev = container_of(table, struct mlx5_ib_dev, devx_event_table); 2525 is_unaffiliated = is_unaffiliated_event(dev->mdev, event_type); 2526 2527 if (!is_unaffiliated) 2528 obj_type = get_event_obj_type(event_type, data); 2529 2530 rcu_read_lock(); 2531 event = xa_load(&table->event_xa, event_type | (obj_type << 16)); 2532 if (!event) { 2533 rcu_read_unlock(); 2534 return NOTIFY_DONE; 2535 } 2536 2537 if (is_unaffiliated) { 2538 dispatch_event_fd(&event->unaffiliated_list, data); 2539 rcu_read_unlock(); 2540 return NOTIFY_OK; 2541 } 2542 2543 obj_id = devx_get_obj_id_from_event(event_type, data); 2544 obj_event = xa_load(&event->object_ids, obj_id); 2545 if (!obj_event) { 2546 rcu_read_unlock(); 2547 return NOTIFY_DONE; 2548 } 2549 2550 dispatch_event_fd(&obj_event->obj_sub_list, data); 2551 2552 rcu_read_unlock(); 2553 return NOTIFY_OK; 2554 } 2555 2556 int mlx5_ib_devx_init(struct mlx5_ib_dev *dev) 2557 { 2558 struct mlx5_devx_event_table *table = &dev->devx_event_table; 2559 int uid; 2560 2561 uid = mlx5_ib_devx_create(dev, false); 2562 if (uid > 0) { 2563 dev->devx_whitelist_uid = uid; 2564 xa_init(&table->event_xa); 2565 mutex_init(&table->event_xa_lock); 2566 MLX5_NB_INIT(&table->devx_nb, devx_event_notifier, NOTIFY_ANY); 2567 mlx5_eq_notifier_register(dev->mdev, &table->devx_nb); 2568 } 2569 2570 return 0; 2571 } 2572 2573 void mlx5_ib_devx_cleanup(struct mlx5_ib_dev *dev) 2574 { 2575 struct mlx5_devx_event_table *table = &dev->devx_event_table; 2576 struct devx_event_subscription *sub, *tmp; 2577 struct devx_event *event; 2578 void *entry; 2579 unsigned long id; 2580 2581 if (dev->devx_whitelist_uid) { 2582 mlx5_eq_notifier_unregister(dev->mdev, &table->devx_nb); 2583 mutex_lock(&dev->devx_event_table.event_xa_lock); 2584 xa_for_each(&table->event_xa, id, entry) { 2585 event = entry; 2586 list_for_each_entry_safe( 2587 sub, tmp, &event->unaffiliated_list, xa_list) 2588 devx_cleanup_subscription(dev, sub); 2589 kfree(entry); 2590 } 2591 mutex_unlock(&dev->devx_event_table.event_xa_lock); 2592 xa_destroy(&table->event_xa); 2593 2594 mlx5_ib_devx_destroy(dev, dev->devx_whitelist_uid); 2595 } 2596 } 2597 2598 static ssize_t devx_async_cmd_event_read(struct file *filp, char __user *buf, 2599 size_t count, loff_t *pos) 2600 { 2601 struct devx_async_cmd_event_file *comp_ev_file = filp->private_data; 2602 struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue; 2603 struct devx_async_data *event; 2604 int ret = 0; 2605 size_t eventsz; 2606 2607 spin_lock_irq(&ev_queue->lock); 2608 2609 while (list_empty(&ev_queue->event_list)) { 2610 spin_unlock_irq(&ev_queue->lock); 2611 2612 if (filp->f_flags & O_NONBLOCK) 2613 return -EAGAIN; 2614 2615 if (wait_event_interruptible( 2616 ev_queue->poll_wait, 2617 (!list_empty(&ev_queue->event_list) || 2618 ev_queue->is_destroyed))) { 2619 return -ERESTARTSYS; 2620 } 2621 2622 spin_lock_irq(&ev_queue->lock); 2623 if (ev_queue->is_destroyed) { 2624 spin_unlock_irq(&ev_queue->lock); 2625 return -EIO; 2626 } 2627 } 2628 2629 event = list_entry(ev_queue->event_list.next, 2630 struct devx_async_data, list); 2631 eventsz = event->cmd_out_len + 2632 sizeof(struct mlx5_ib_uapi_devx_async_cmd_hdr); 2633 2634 if (eventsz > count) { 2635 spin_unlock_irq(&ev_queue->lock); 2636 return -ENOSPC; 2637 } 2638 2639 list_del(ev_queue->event_list.next); 2640 spin_unlock_irq(&ev_queue->lock); 2641 2642 if (copy_to_user(buf, &event->hdr, eventsz)) 2643 ret = -EFAULT; 2644 else 2645 ret = eventsz; 2646 2647 atomic_sub(event->cmd_out_len, &ev_queue->bytes_in_use); 2648 kvfree(event); 2649 return ret; 2650 } 2651 2652 static __poll_t devx_async_cmd_event_poll(struct file *filp, 2653 struct poll_table_struct *wait) 2654 { 2655 struct devx_async_cmd_event_file *comp_ev_file = filp->private_data; 2656 struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue; 2657 __poll_t pollflags = 0; 2658 2659 poll_wait(filp, &ev_queue->poll_wait, wait); 2660 2661 spin_lock_irq(&ev_queue->lock); 2662 if (ev_queue->is_destroyed) 2663 pollflags = EPOLLIN | EPOLLRDNORM | EPOLLRDHUP; 2664 else if (!list_empty(&ev_queue->event_list)) 2665 pollflags = EPOLLIN | EPOLLRDNORM; 2666 spin_unlock_irq(&ev_queue->lock); 2667 2668 return pollflags; 2669 } 2670 2671 static const struct file_operations devx_async_cmd_event_fops = { 2672 .owner = THIS_MODULE, 2673 .read = devx_async_cmd_event_read, 2674 .poll = devx_async_cmd_event_poll, 2675 .release = uverbs_uobject_fd_release, 2676 .llseek = no_llseek, 2677 }; 2678 2679 static ssize_t devx_async_event_read(struct file *filp, char __user *buf, 2680 size_t count, loff_t *pos) 2681 { 2682 struct devx_async_event_file *ev_file = filp->private_data; 2683 struct devx_event_subscription *event_sub; 2684 struct devx_async_event_data *event; 2685 int ret = 0; 2686 size_t eventsz; 2687 bool omit_data; 2688 void *event_data; 2689 2690 omit_data = ev_file->omit_data; 2691 2692 spin_lock_irq(&ev_file->lock); 2693 2694 if (ev_file->is_overflow_err) { 2695 ev_file->is_overflow_err = 0; 2696 spin_unlock_irq(&ev_file->lock); 2697 return -EOVERFLOW; 2698 } 2699 2700 2701 while (list_empty(&ev_file->event_list)) { 2702 spin_unlock_irq(&ev_file->lock); 2703 2704 if (filp->f_flags & O_NONBLOCK) 2705 return -EAGAIN; 2706 2707 if (wait_event_interruptible(ev_file->poll_wait, 2708 (!list_empty(&ev_file->event_list) || 2709 ev_file->is_destroyed))) { 2710 return -ERESTARTSYS; 2711 } 2712 2713 spin_lock_irq(&ev_file->lock); 2714 if (ev_file->is_destroyed) { 2715 spin_unlock_irq(&ev_file->lock); 2716 return -EIO; 2717 } 2718 } 2719 2720 if (omit_data) { 2721 event_sub = list_first_entry(&ev_file->event_list, 2722 struct devx_event_subscription, 2723 event_list); 2724 eventsz = sizeof(event_sub->cookie); 2725 event_data = &event_sub->cookie; 2726 } else { 2727 event = list_first_entry(&ev_file->event_list, 2728 struct devx_async_event_data, list); 2729 eventsz = sizeof(struct mlx5_eqe) + 2730 sizeof(struct mlx5_ib_uapi_devx_async_event_hdr); 2731 event_data = &event->hdr; 2732 } 2733 2734 if (eventsz > count) { 2735 spin_unlock_irq(&ev_file->lock); 2736 return -EINVAL; 2737 } 2738 2739 if (omit_data) 2740 list_del_init(&event_sub->event_list); 2741 else 2742 list_del(&event->list); 2743 2744 spin_unlock_irq(&ev_file->lock); 2745 2746 if (copy_to_user(buf, event_data, eventsz)) 2747 /* This points to an application issue, not a kernel concern */ 2748 ret = -EFAULT; 2749 else 2750 ret = eventsz; 2751 2752 if (!omit_data) 2753 kfree(event); 2754 return ret; 2755 } 2756 2757 static __poll_t devx_async_event_poll(struct file *filp, 2758 struct poll_table_struct *wait) 2759 { 2760 struct devx_async_event_file *ev_file = filp->private_data; 2761 __poll_t pollflags = 0; 2762 2763 poll_wait(filp, &ev_file->poll_wait, wait); 2764 2765 spin_lock_irq(&ev_file->lock); 2766 if (ev_file->is_destroyed) 2767 pollflags = EPOLLIN | EPOLLRDNORM | EPOLLRDHUP; 2768 else if (!list_empty(&ev_file->event_list)) 2769 pollflags = EPOLLIN | EPOLLRDNORM; 2770 spin_unlock_irq(&ev_file->lock); 2771 2772 return pollflags; 2773 } 2774 2775 static void devx_free_subscription(struct rcu_head *rcu) 2776 { 2777 struct devx_event_subscription *event_sub = 2778 container_of(rcu, struct devx_event_subscription, rcu); 2779 2780 if (event_sub->eventfd) 2781 eventfd_ctx_put(event_sub->eventfd); 2782 uverbs_uobject_put(&event_sub->ev_file->uobj); 2783 kfree(event_sub); 2784 } 2785 2786 static const struct file_operations devx_async_event_fops = { 2787 .owner = THIS_MODULE, 2788 .read = devx_async_event_read, 2789 .poll = devx_async_event_poll, 2790 .release = uverbs_uobject_fd_release, 2791 .llseek = no_llseek, 2792 }; 2793 2794 static void devx_async_cmd_event_destroy_uobj(struct ib_uobject *uobj, 2795 enum rdma_remove_reason why) 2796 { 2797 struct devx_async_cmd_event_file *comp_ev_file = 2798 container_of(uobj, struct devx_async_cmd_event_file, 2799 uobj); 2800 struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue; 2801 struct devx_async_data *entry, *tmp; 2802 2803 spin_lock_irq(&ev_queue->lock); 2804 ev_queue->is_destroyed = 1; 2805 spin_unlock_irq(&ev_queue->lock); 2806 wake_up_interruptible(&ev_queue->poll_wait); 2807 2808 mlx5_cmd_cleanup_async_ctx(&comp_ev_file->async_ctx); 2809 2810 spin_lock_irq(&comp_ev_file->ev_queue.lock); 2811 list_for_each_entry_safe(entry, tmp, 2812 &comp_ev_file->ev_queue.event_list, list) { 2813 list_del(&entry->list); 2814 kvfree(entry); 2815 } 2816 spin_unlock_irq(&comp_ev_file->ev_queue.lock); 2817 }; 2818 2819 static void devx_async_event_destroy_uobj(struct ib_uobject *uobj, 2820 enum rdma_remove_reason why) 2821 { 2822 struct devx_async_event_file *ev_file = 2823 container_of(uobj, struct devx_async_event_file, 2824 uobj); 2825 struct devx_event_subscription *event_sub, *event_sub_tmp; 2826 struct mlx5_ib_dev *dev = ev_file->dev; 2827 2828 spin_lock_irq(&ev_file->lock); 2829 ev_file->is_destroyed = 1; 2830 2831 /* free the pending events allocation */ 2832 if (ev_file->omit_data) { 2833 struct devx_event_subscription *event_sub, *tmp; 2834 2835 list_for_each_entry_safe(event_sub, tmp, &ev_file->event_list, 2836 event_list) 2837 list_del_init(&event_sub->event_list); 2838 2839 } else { 2840 struct devx_async_event_data *entry, *tmp; 2841 2842 list_for_each_entry_safe(entry, tmp, &ev_file->event_list, 2843 list) { 2844 list_del(&entry->list); 2845 kfree(entry); 2846 } 2847 } 2848 2849 spin_unlock_irq(&ev_file->lock); 2850 wake_up_interruptible(&ev_file->poll_wait); 2851 2852 mutex_lock(&dev->devx_event_table.event_xa_lock); 2853 /* delete the subscriptions which are related to this FD */ 2854 list_for_each_entry_safe(event_sub, event_sub_tmp, 2855 &ev_file->subscribed_events_list, file_list) { 2856 devx_cleanup_subscription(dev, event_sub); 2857 list_del_rcu(&event_sub->file_list); 2858 /* subscription may not be used by the read API any more */ 2859 call_rcu(&event_sub->rcu, devx_free_subscription); 2860 } 2861 mutex_unlock(&dev->devx_event_table.event_xa_lock); 2862 2863 put_device(&dev->ib_dev.dev); 2864 }; 2865 2866 DECLARE_UVERBS_NAMED_METHOD( 2867 MLX5_IB_METHOD_DEVX_UMEM_REG, 2868 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE, 2869 MLX5_IB_OBJECT_DEVX_UMEM, 2870 UVERBS_ACCESS_NEW, 2871 UA_MANDATORY), 2872 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR, 2873 UVERBS_ATTR_TYPE(u64), 2874 UA_MANDATORY), 2875 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_LEN, 2876 UVERBS_ATTR_TYPE(u64), 2877 UA_MANDATORY), 2878 UVERBS_ATTR_RAW_FD(MLX5_IB_ATTR_DEVX_UMEM_REG_DMABUF_FD, 2879 UA_OPTIONAL), 2880 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS, 2881 enum ib_access_flags), 2882 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_PGSZ_BITMAP, 2883 u64), 2884 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, 2885 UVERBS_ATTR_TYPE(u32), 2886 UA_MANDATORY)); 2887 2888 DECLARE_UVERBS_NAMED_METHOD_DESTROY( 2889 MLX5_IB_METHOD_DEVX_UMEM_DEREG, 2890 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_DEREG_HANDLE, 2891 MLX5_IB_OBJECT_DEVX_UMEM, 2892 UVERBS_ACCESS_DESTROY, 2893 UA_MANDATORY)); 2894 2895 DECLARE_UVERBS_NAMED_METHOD( 2896 MLX5_IB_METHOD_DEVX_QUERY_EQN, 2897 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC, 2898 UVERBS_ATTR_TYPE(u32), 2899 UA_MANDATORY), 2900 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN, 2901 UVERBS_ATTR_TYPE(u32), 2902 UA_MANDATORY)); 2903 2904 DECLARE_UVERBS_NAMED_METHOD( 2905 MLX5_IB_METHOD_DEVX_QUERY_UAR, 2906 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX, 2907 UVERBS_ATTR_TYPE(u32), 2908 UA_MANDATORY), 2909 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX, 2910 UVERBS_ATTR_TYPE(u32), 2911 UA_MANDATORY)); 2912 2913 DECLARE_UVERBS_NAMED_METHOD( 2914 MLX5_IB_METHOD_DEVX_OTHER, 2915 UVERBS_ATTR_PTR_IN( 2916 MLX5_IB_ATTR_DEVX_OTHER_CMD_IN, 2917 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), 2918 UA_MANDATORY, 2919 UA_ALLOC_AND_COPY), 2920 UVERBS_ATTR_PTR_OUT( 2921 MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT, 2922 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)), 2923 UA_MANDATORY)); 2924 2925 DECLARE_UVERBS_NAMED_METHOD( 2926 MLX5_IB_METHOD_DEVX_OBJ_CREATE, 2927 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE, 2928 MLX5_IB_OBJECT_DEVX_OBJ, 2929 UVERBS_ACCESS_NEW, 2930 UA_MANDATORY), 2931 UVERBS_ATTR_PTR_IN( 2932 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN, 2933 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), 2934 UA_MANDATORY, 2935 UA_ALLOC_AND_COPY), 2936 UVERBS_ATTR_PTR_OUT( 2937 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, 2938 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)), 2939 UA_MANDATORY)); 2940 2941 DECLARE_UVERBS_NAMED_METHOD_DESTROY( 2942 MLX5_IB_METHOD_DEVX_OBJ_DESTROY, 2943 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_DESTROY_HANDLE, 2944 MLX5_IB_OBJECT_DEVX_OBJ, 2945 UVERBS_ACCESS_DESTROY, 2946 UA_MANDATORY)); 2947 2948 DECLARE_UVERBS_NAMED_METHOD( 2949 MLX5_IB_METHOD_DEVX_OBJ_MODIFY, 2950 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE, 2951 UVERBS_IDR_ANY_OBJECT, 2952 UVERBS_ACCESS_WRITE, 2953 UA_MANDATORY), 2954 UVERBS_ATTR_PTR_IN( 2955 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN, 2956 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), 2957 UA_MANDATORY, 2958 UA_ALLOC_AND_COPY), 2959 UVERBS_ATTR_PTR_OUT( 2960 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT, 2961 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)), 2962 UA_MANDATORY)); 2963 2964 DECLARE_UVERBS_NAMED_METHOD( 2965 MLX5_IB_METHOD_DEVX_OBJ_QUERY, 2966 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE, 2967 UVERBS_IDR_ANY_OBJECT, 2968 UVERBS_ACCESS_READ, 2969 UA_MANDATORY), 2970 UVERBS_ATTR_PTR_IN( 2971 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN, 2972 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), 2973 UA_MANDATORY, 2974 UA_ALLOC_AND_COPY), 2975 UVERBS_ATTR_PTR_OUT( 2976 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT, 2977 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)), 2978 UA_MANDATORY)); 2979 2980 DECLARE_UVERBS_NAMED_METHOD( 2981 MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY, 2982 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE, 2983 UVERBS_IDR_ANY_OBJECT, 2984 UVERBS_ACCESS_READ, 2985 UA_MANDATORY), 2986 UVERBS_ATTR_PTR_IN( 2987 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN, 2988 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), 2989 UA_MANDATORY, 2990 UA_ALLOC_AND_COPY), 2991 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_OUT_LEN, 2992 u16, UA_MANDATORY), 2993 UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_FD, 2994 MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, 2995 UVERBS_ACCESS_READ, 2996 UA_MANDATORY), 2997 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_WR_ID, 2998 UVERBS_ATTR_TYPE(u64), 2999 UA_MANDATORY)); 3000 3001 DECLARE_UVERBS_NAMED_METHOD( 3002 MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT, 3003 UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_HANDLE, 3004 MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, 3005 UVERBS_ACCESS_READ, 3006 UA_MANDATORY), 3007 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_OBJ_HANDLE, 3008 MLX5_IB_OBJECT_DEVX_OBJ, 3009 UVERBS_ACCESS_READ, 3010 UA_OPTIONAL), 3011 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST, 3012 UVERBS_ATTR_MIN_SIZE(sizeof(u16)), 3013 UA_MANDATORY, 3014 UA_ALLOC_AND_COPY), 3015 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE, 3016 UVERBS_ATTR_TYPE(u64), 3017 UA_OPTIONAL), 3018 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM, 3019 UVERBS_ATTR_TYPE(u32), 3020 UA_OPTIONAL)); 3021 3022 DECLARE_UVERBS_GLOBAL_METHODS(MLX5_IB_OBJECT_DEVX, 3023 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OTHER), 3024 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_UAR), 3025 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_EQN), 3026 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT)); 3027 3028 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ, 3029 UVERBS_TYPE_ALLOC_IDR(devx_obj_cleanup), 3030 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_CREATE), 3031 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_DESTROY), 3032 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_MODIFY), 3033 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_QUERY), 3034 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY)); 3035 3036 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM, 3037 UVERBS_TYPE_ALLOC_IDR(devx_umem_cleanup), 3038 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_REG), 3039 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_DEREG)); 3040 3041 3042 DECLARE_UVERBS_NAMED_METHOD( 3043 MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC, 3044 UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_ASYNC_CMD_FD_ALLOC_HANDLE, 3045 MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, 3046 UVERBS_ACCESS_NEW, 3047 UA_MANDATORY)); 3048 3049 DECLARE_UVERBS_NAMED_OBJECT( 3050 MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, 3051 UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_cmd_event_file), 3052 devx_async_cmd_event_destroy_uobj, 3053 &devx_async_cmd_event_fops, "[devx_async_cmd]", 3054 O_RDONLY), 3055 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC)); 3056 3057 DECLARE_UVERBS_NAMED_METHOD( 3058 MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC, 3059 UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE, 3060 MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, 3061 UVERBS_ACCESS_NEW, 3062 UA_MANDATORY), 3063 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS, 3064 enum mlx5_ib_uapi_devx_create_event_channel_flags, 3065 UA_MANDATORY)); 3066 3067 DECLARE_UVERBS_NAMED_OBJECT( 3068 MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, 3069 UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_event_file), 3070 devx_async_event_destroy_uobj, 3071 &devx_async_event_fops, "[devx_async_event]", 3072 O_RDONLY), 3073 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC)); 3074 3075 static bool devx_is_supported(struct ib_device *device) 3076 { 3077 struct mlx5_ib_dev *dev = to_mdev(device); 3078 3079 return MLX5_CAP_GEN(dev->mdev, log_max_uctx); 3080 } 3081 3082 const struct uapi_definition mlx5_ib_devx_defs[] = { 3083 UAPI_DEF_CHAIN_OBJ_TREE_NAMED( 3084 MLX5_IB_OBJECT_DEVX, 3085 UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), 3086 UAPI_DEF_CHAIN_OBJ_TREE_NAMED( 3087 MLX5_IB_OBJECT_DEVX_OBJ, 3088 UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), 3089 UAPI_DEF_CHAIN_OBJ_TREE_NAMED( 3090 MLX5_IB_OBJECT_DEVX_UMEM, 3091 UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), 3092 UAPI_DEF_CHAIN_OBJ_TREE_NAMED( 3093 MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, 3094 UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), 3095 UAPI_DEF_CHAIN_OBJ_TREE_NAMED( 3096 MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, 3097 UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), 3098 {}, 3099 }; 3100