1 /* 2 * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. 3 * Copyright (c) 2004 Infinicon Corporation. All rights reserved. 4 * Copyright (c) 2004 Intel Corporation. All rights reserved. 5 * Copyright (c) 2004 Topspin Corporation. All rights reserved. 6 * Copyright (c) 2004 Voltaire Corporation. All rights reserved. 7 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 8 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. 9 * 10 * This software is available to you under a choice of one of two 11 * licenses. You may choose to be licensed under the terms of the GNU 12 * General Public License (GPL) Version 2, available from the file 13 * COPYING in the main directory of this source tree, or the 14 * OpenIB.org BSD license below: 15 * 16 * Redistribution and use in source and binary forms, with or 17 * without modification, are permitted provided that the following 18 * conditions are met: 19 * 20 * - Redistributions of source code must retain the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer. 23 * 24 * - Redistributions in binary form must reproduce the above 25 * copyright notice, this list of conditions and the following 26 * disclaimer in the documentation and/or other materials 27 * provided with the distribution. 28 * 29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 30 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 31 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 32 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 33 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 34 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 35 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 36 * SOFTWARE. 37 */ 38 39 #if !defined(IB_VERBS_H) 40 #define IB_VERBS_H 41 42 #include <linux/types.h> 43 #include <linux/device.h> 44 #include <linux/mm.h> 45 #include <linux/dma-mapping.h> 46 #include <linux/kref.h> 47 #include <linux/list.h> 48 #include <linux/rwsem.h> 49 #include <linux/scatterlist.h> 50 #include <linux/workqueue.h> 51 #include <linux/socket.h> 52 #include <linux/irq_poll.h> 53 #include <uapi/linux/if_ether.h> 54 #include <net/ipv6.h> 55 #include <net/ip.h> 56 #include <linux/string.h> 57 #include <linux/slab.h> 58 #include <linux/netdevice.h> 59 60 #include <linux/if_link.h> 61 #include <linux/atomic.h> 62 #include <linux/mmu_notifier.h> 63 #include <linux/uaccess.h> 64 #include <linux/cgroup_rdma.h> 65 #include <uapi/rdma/ib_user_verbs.h> 66 67 extern struct workqueue_struct *ib_wq; 68 extern struct workqueue_struct *ib_comp_wq; 69 70 union ib_gid { 71 u8 raw[16]; 72 struct { 73 __be64 subnet_prefix; 74 __be64 interface_id; 75 } global; 76 }; 77 78 extern union ib_gid zgid; 79 80 enum ib_gid_type { 81 /* If link layer is Ethernet, this is RoCE V1 */ 82 IB_GID_TYPE_IB = 0, 83 IB_GID_TYPE_ROCE = 0, 84 IB_GID_TYPE_ROCE_UDP_ENCAP = 1, 85 IB_GID_TYPE_SIZE 86 }; 87 88 #define ROCE_V2_UDP_DPORT 4791 89 struct ib_gid_attr { 90 enum ib_gid_type gid_type; 91 struct net_device *ndev; 92 }; 93 94 enum rdma_node_type { 95 /* IB values map to NodeInfo:NodeType. */ 96 RDMA_NODE_IB_CA = 1, 97 RDMA_NODE_IB_SWITCH, 98 RDMA_NODE_IB_ROUTER, 99 RDMA_NODE_RNIC, 100 RDMA_NODE_USNIC, 101 RDMA_NODE_USNIC_UDP, 102 }; 103 104 enum { 105 /* set the local administered indication */ 106 IB_SA_WELL_KNOWN_GUID = BIT_ULL(57) | 2, 107 }; 108 109 enum rdma_transport_type { 110 RDMA_TRANSPORT_IB, 111 RDMA_TRANSPORT_IWARP, 112 RDMA_TRANSPORT_USNIC, 113 RDMA_TRANSPORT_USNIC_UDP 114 }; 115 116 enum rdma_protocol_type { 117 RDMA_PROTOCOL_IB, 118 RDMA_PROTOCOL_IBOE, 119 RDMA_PROTOCOL_IWARP, 120 RDMA_PROTOCOL_USNIC_UDP 121 }; 122 123 __attribute_const__ enum rdma_transport_type 124 rdma_node_get_transport(enum rdma_node_type node_type); 125 126 enum rdma_network_type { 127 RDMA_NETWORK_IB, 128 RDMA_NETWORK_ROCE_V1 = RDMA_NETWORK_IB, 129 RDMA_NETWORK_IPV4, 130 RDMA_NETWORK_IPV6 131 }; 132 133 static inline enum ib_gid_type ib_network_to_gid_type(enum rdma_network_type network_type) 134 { 135 if (network_type == RDMA_NETWORK_IPV4 || 136 network_type == RDMA_NETWORK_IPV6) 137 return IB_GID_TYPE_ROCE_UDP_ENCAP; 138 139 /* IB_GID_TYPE_IB same as RDMA_NETWORK_ROCE_V1 */ 140 return IB_GID_TYPE_IB; 141 } 142 143 static inline enum rdma_network_type ib_gid_to_network_type(enum ib_gid_type gid_type, 144 union ib_gid *gid) 145 { 146 if (gid_type == IB_GID_TYPE_IB) 147 return RDMA_NETWORK_IB; 148 149 if (ipv6_addr_v4mapped((struct in6_addr *)gid)) 150 return RDMA_NETWORK_IPV4; 151 else 152 return RDMA_NETWORK_IPV6; 153 } 154 155 enum rdma_link_layer { 156 IB_LINK_LAYER_UNSPECIFIED, 157 IB_LINK_LAYER_INFINIBAND, 158 IB_LINK_LAYER_ETHERNET, 159 }; 160 161 enum ib_device_cap_flags { 162 IB_DEVICE_RESIZE_MAX_WR = (1 << 0), 163 IB_DEVICE_BAD_PKEY_CNTR = (1 << 1), 164 IB_DEVICE_BAD_QKEY_CNTR = (1 << 2), 165 IB_DEVICE_RAW_MULTI = (1 << 3), 166 IB_DEVICE_AUTO_PATH_MIG = (1 << 4), 167 IB_DEVICE_CHANGE_PHY_PORT = (1 << 5), 168 IB_DEVICE_UD_AV_PORT_ENFORCE = (1 << 6), 169 IB_DEVICE_CURR_QP_STATE_MOD = (1 << 7), 170 IB_DEVICE_SHUTDOWN_PORT = (1 << 8), 171 IB_DEVICE_INIT_TYPE = (1 << 9), 172 IB_DEVICE_PORT_ACTIVE_EVENT = (1 << 10), 173 IB_DEVICE_SYS_IMAGE_GUID = (1 << 11), 174 IB_DEVICE_RC_RNR_NAK_GEN = (1 << 12), 175 IB_DEVICE_SRQ_RESIZE = (1 << 13), 176 IB_DEVICE_N_NOTIFY_CQ = (1 << 14), 177 178 /* 179 * This device supports a per-device lkey or stag that can be 180 * used without performing a memory registration for the local 181 * memory. Note that ULPs should never check this flag, but 182 * instead of use the local_dma_lkey flag in the ib_pd structure, 183 * which will always contain a usable lkey. 184 */ 185 IB_DEVICE_LOCAL_DMA_LKEY = (1 << 15), 186 IB_DEVICE_RESERVED /* old SEND_W_INV */ = (1 << 16), 187 IB_DEVICE_MEM_WINDOW = (1 << 17), 188 /* 189 * Devices should set IB_DEVICE_UD_IP_SUM if they support 190 * insertion of UDP and TCP checksum on outgoing UD IPoIB 191 * messages and can verify the validity of checksum for 192 * incoming messages. Setting this flag implies that the 193 * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode. 194 */ 195 IB_DEVICE_UD_IP_CSUM = (1 << 18), 196 IB_DEVICE_UD_TSO = (1 << 19), 197 IB_DEVICE_XRC = (1 << 20), 198 199 /* 200 * This device supports the IB "base memory management extension", 201 * which includes support for fast registrations (IB_WR_REG_MR, 202 * IB_WR_LOCAL_INV and IB_WR_SEND_WITH_INV verbs). This flag should 203 * also be set by any iWarp device which must support FRs to comply 204 * to the iWarp verbs spec. iWarp devices also support the 205 * IB_WR_RDMA_READ_WITH_INV verb for RDMA READs that invalidate the 206 * stag. 207 */ 208 IB_DEVICE_MEM_MGT_EXTENSIONS = (1 << 21), 209 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1 << 22), 210 IB_DEVICE_MEM_WINDOW_TYPE_2A = (1 << 23), 211 IB_DEVICE_MEM_WINDOW_TYPE_2B = (1 << 24), 212 IB_DEVICE_RC_IP_CSUM = (1 << 25), 213 /* Deprecated. Please use IB_RAW_PACKET_CAP_IP_CSUM. */ 214 IB_DEVICE_RAW_IP_CSUM = (1 << 26), 215 /* 216 * Devices should set IB_DEVICE_CROSS_CHANNEL if they 217 * support execution of WQEs that involve synchronization 218 * of I/O operations with single completion queue managed 219 * by hardware. 220 */ 221 IB_DEVICE_CROSS_CHANNEL = (1 << 27), 222 IB_DEVICE_MANAGED_FLOW_STEERING = (1 << 29), 223 IB_DEVICE_SIGNATURE_HANDOVER = (1 << 30), 224 IB_DEVICE_ON_DEMAND_PAGING = (1ULL << 31), 225 IB_DEVICE_SG_GAPS_REG = (1ULL << 32), 226 IB_DEVICE_VIRTUAL_FUNCTION = (1ULL << 33), 227 /* Deprecated. Please use IB_RAW_PACKET_CAP_SCATTER_FCS. */ 228 IB_DEVICE_RAW_SCATTER_FCS = (1ULL << 34), 229 IB_DEVICE_RDMA_NETDEV_OPA_VNIC = (1ULL << 35), 230 }; 231 232 enum ib_signature_prot_cap { 233 IB_PROT_T10DIF_TYPE_1 = 1, 234 IB_PROT_T10DIF_TYPE_2 = 1 << 1, 235 IB_PROT_T10DIF_TYPE_3 = 1 << 2, 236 }; 237 238 enum ib_signature_guard_cap { 239 IB_GUARD_T10DIF_CRC = 1, 240 IB_GUARD_T10DIF_CSUM = 1 << 1, 241 }; 242 243 enum ib_atomic_cap { 244 IB_ATOMIC_NONE, 245 IB_ATOMIC_HCA, 246 IB_ATOMIC_GLOB 247 }; 248 249 enum ib_odp_general_cap_bits { 250 IB_ODP_SUPPORT = 1 << 0, 251 IB_ODP_SUPPORT_IMPLICIT = 1 << 1, 252 }; 253 254 enum ib_odp_transport_cap_bits { 255 IB_ODP_SUPPORT_SEND = 1 << 0, 256 IB_ODP_SUPPORT_RECV = 1 << 1, 257 IB_ODP_SUPPORT_WRITE = 1 << 2, 258 IB_ODP_SUPPORT_READ = 1 << 3, 259 IB_ODP_SUPPORT_ATOMIC = 1 << 4, 260 }; 261 262 struct ib_odp_caps { 263 uint64_t general_caps; 264 struct { 265 uint32_t rc_odp_caps; 266 uint32_t uc_odp_caps; 267 uint32_t ud_odp_caps; 268 } per_transport_caps; 269 }; 270 271 struct ib_rss_caps { 272 /* Corresponding bit will be set if qp type from 273 * 'enum ib_qp_type' is supported, e.g. 274 * supported_qpts |= 1 << IB_QPT_UD 275 */ 276 u32 supported_qpts; 277 u32 max_rwq_indirection_tables; 278 u32 max_rwq_indirection_table_size; 279 }; 280 281 enum ib_cq_creation_flags { 282 IB_CQ_FLAGS_TIMESTAMP_COMPLETION = 1 << 0, 283 IB_CQ_FLAGS_IGNORE_OVERRUN = 1 << 1, 284 }; 285 286 struct ib_cq_init_attr { 287 unsigned int cqe; 288 int comp_vector; 289 u32 flags; 290 }; 291 292 struct ib_device_attr { 293 u64 fw_ver; 294 __be64 sys_image_guid; 295 u64 max_mr_size; 296 u64 page_size_cap; 297 u32 vendor_id; 298 u32 vendor_part_id; 299 u32 hw_ver; 300 int max_qp; 301 int max_qp_wr; 302 u64 device_cap_flags; 303 int max_sge; 304 int max_sge_rd; 305 int max_cq; 306 int max_cqe; 307 int max_mr; 308 int max_pd; 309 int max_qp_rd_atom; 310 int max_ee_rd_atom; 311 int max_res_rd_atom; 312 int max_qp_init_rd_atom; 313 int max_ee_init_rd_atom; 314 enum ib_atomic_cap atomic_cap; 315 enum ib_atomic_cap masked_atomic_cap; 316 int max_ee; 317 int max_rdd; 318 int max_mw; 319 int max_raw_ipv6_qp; 320 int max_raw_ethy_qp; 321 int max_mcast_grp; 322 int max_mcast_qp_attach; 323 int max_total_mcast_qp_attach; 324 int max_ah; 325 int max_fmr; 326 int max_map_per_fmr; 327 int max_srq; 328 int max_srq_wr; 329 int max_srq_sge; 330 unsigned int max_fast_reg_page_list_len; 331 u16 max_pkeys; 332 u8 local_ca_ack_delay; 333 int sig_prot_cap; 334 int sig_guard_cap; 335 struct ib_odp_caps odp_caps; 336 uint64_t timestamp_mask; 337 uint64_t hca_core_clock; /* in KHZ */ 338 struct ib_rss_caps rss_caps; 339 u32 max_wq_type_rq; 340 u32 raw_packet_caps; /* Use ib_raw_packet_caps enum */ 341 }; 342 343 enum ib_mtu { 344 IB_MTU_256 = 1, 345 IB_MTU_512 = 2, 346 IB_MTU_1024 = 3, 347 IB_MTU_2048 = 4, 348 IB_MTU_4096 = 5 349 }; 350 351 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu) 352 { 353 switch (mtu) { 354 case IB_MTU_256: return 256; 355 case IB_MTU_512: return 512; 356 case IB_MTU_1024: return 1024; 357 case IB_MTU_2048: return 2048; 358 case IB_MTU_4096: return 4096; 359 default: return -1; 360 } 361 } 362 363 static inline enum ib_mtu ib_mtu_int_to_enum(int mtu) 364 { 365 if (mtu >= 4096) 366 return IB_MTU_4096; 367 else if (mtu >= 2048) 368 return IB_MTU_2048; 369 else if (mtu >= 1024) 370 return IB_MTU_1024; 371 else if (mtu >= 512) 372 return IB_MTU_512; 373 else 374 return IB_MTU_256; 375 } 376 377 enum ib_port_state { 378 IB_PORT_NOP = 0, 379 IB_PORT_DOWN = 1, 380 IB_PORT_INIT = 2, 381 IB_PORT_ARMED = 3, 382 IB_PORT_ACTIVE = 4, 383 IB_PORT_ACTIVE_DEFER = 5 384 }; 385 386 enum ib_port_cap_flags { 387 IB_PORT_SM = 1 << 1, 388 IB_PORT_NOTICE_SUP = 1 << 2, 389 IB_PORT_TRAP_SUP = 1 << 3, 390 IB_PORT_OPT_IPD_SUP = 1 << 4, 391 IB_PORT_AUTO_MIGR_SUP = 1 << 5, 392 IB_PORT_SL_MAP_SUP = 1 << 6, 393 IB_PORT_MKEY_NVRAM = 1 << 7, 394 IB_PORT_PKEY_NVRAM = 1 << 8, 395 IB_PORT_LED_INFO_SUP = 1 << 9, 396 IB_PORT_SM_DISABLED = 1 << 10, 397 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11, 398 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12, 399 IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14, 400 IB_PORT_CM_SUP = 1 << 16, 401 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17, 402 IB_PORT_REINIT_SUP = 1 << 18, 403 IB_PORT_DEVICE_MGMT_SUP = 1 << 19, 404 IB_PORT_VENDOR_CLASS_SUP = 1 << 20, 405 IB_PORT_DR_NOTICE_SUP = 1 << 21, 406 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22, 407 IB_PORT_BOOT_MGMT_SUP = 1 << 23, 408 IB_PORT_LINK_LATENCY_SUP = 1 << 24, 409 IB_PORT_CLIENT_REG_SUP = 1 << 25, 410 IB_PORT_IP_BASED_GIDS = 1 << 26, 411 }; 412 413 enum ib_port_width { 414 IB_WIDTH_1X = 1, 415 IB_WIDTH_4X = 2, 416 IB_WIDTH_8X = 4, 417 IB_WIDTH_12X = 8 418 }; 419 420 static inline int ib_width_enum_to_int(enum ib_port_width width) 421 { 422 switch (width) { 423 case IB_WIDTH_1X: return 1; 424 case IB_WIDTH_4X: return 4; 425 case IB_WIDTH_8X: return 8; 426 case IB_WIDTH_12X: return 12; 427 default: return -1; 428 } 429 } 430 431 enum ib_port_speed { 432 IB_SPEED_SDR = 1, 433 IB_SPEED_DDR = 2, 434 IB_SPEED_QDR = 4, 435 IB_SPEED_FDR10 = 8, 436 IB_SPEED_FDR = 16, 437 IB_SPEED_EDR = 32, 438 IB_SPEED_HDR = 64 439 }; 440 441 /** 442 * struct rdma_hw_stats 443 * @timestamp - Used by the core code to track when the last update was 444 * @lifespan - Used by the core code to determine how old the counters 445 * should be before being updated again. Stored in jiffies, defaults 446 * to 10 milliseconds, drivers can override the default be specifying 447 * their own value during their allocation routine. 448 * @name - Array of pointers to static names used for the counters in 449 * directory. 450 * @num_counters - How many hardware counters there are. If name is 451 * shorter than this number, a kernel oops will result. Driver authors 452 * are encouraged to leave BUILD_BUG_ON(ARRAY_SIZE(@name) < num_counters) 453 * in their code to prevent this. 454 * @value - Array of u64 counters that are accessed by the sysfs code and 455 * filled in by the drivers get_stats routine 456 */ 457 struct rdma_hw_stats { 458 unsigned long timestamp; 459 unsigned long lifespan; 460 const char * const *names; 461 int num_counters; 462 u64 value[]; 463 }; 464 465 #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10 466 /** 467 * rdma_alloc_hw_stats_struct - Helper function to allocate dynamic struct 468 * for drivers. 469 * @names - Array of static const char * 470 * @num_counters - How many elements in array 471 * @lifespan - How many milliseconds between updates 472 */ 473 static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct( 474 const char * const *names, int num_counters, 475 unsigned long lifespan) 476 { 477 struct rdma_hw_stats *stats; 478 479 stats = kzalloc(sizeof(*stats) + num_counters * sizeof(u64), 480 GFP_KERNEL); 481 if (!stats) 482 return NULL; 483 stats->names = names; 484 stats->num_counters = num_counters; 485 stats->lifespan = msecs_to_jiffies(lifespan); 486 487 return stats; 488 } 489 490 491 /* Define bits for the various functionality this port needs to be supported by 492 * the core. 493 */ 494 /* Management 0x00000FFF */ 495 #define RDMA_CORE_CAP_IB_MAD 0x00000001 496 #define RDMA_CORE_CAP_IB_SMI 0x00000002 497 #define RDMA_CORE_CAP_IB_CM 0x00000004 498 #define RDMA_CORE_CAP_IW_CM 0x00000008 499 #define RDMA_CORE_CAP_IB_SA 0x00000010 500 #define RDMA_CORE_CAP_OPA_MAD 0x00000020 501 502 /* Address format 0x000FF000 */ 503 #define RDMA_CORE_CAP_AF_IB 0x00001000 504 #define RDMA_CORE_CAP_ETH_AH 0x00002000 505 #define RDMA_CORE_CAP_OPA_AH 0x00004000 506 507 /* Protocol 0xFFF00000 */ 508 #define RDMA_CORE_CAP_PROT_IB 0x00100000 509 #define RDMA_CORE_CAP_PROT_ROCE 0x00200000 510 #define RDMA_CORE_CAP_PROT_IWARP 0x00400000 511 #define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000 512 #define RDMA_CORE_CAP_PROT_RAW_PACKET 0x01000000 513 #define RDMA_CORE_CAP_PROT_USNIC 0x02000000 514 515 #define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \ 516 | RDMA_CORE_CAP_IB_MAD \ 517 | RDMA_CORE_CAP_IB_SMI \ 518 | RDMA_CORE_CAP_IB_CM \ 519 | RDMA_CORE_CAP_IB_SA \ 520 | RDMA_CORE_CAP_AF_IB) 521 #define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \ 522 | RDMA_CORE_CAP_IB_MAD \ 523 | RDMA_CORE_CAP_IB_CM \ 524 | RDMA_CORE_CAP_AF_IB \ 525 | RDMA_CORE_CAP_ETH_AH) 526 #define RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP \ 527 (RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP \ 528 | RDMA_CORE_CAP_IB_MAD \ 529 | RDMA_CORE_CAP_IB_CM \ 530 | RDMA_CORE_CAP_AF_IB \ 531 | RDMA_CORE_CAP_ETH_AH) 532 #define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \ 533 | RDMA_CORE_CAP_IW_CM) 534 #define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \ 535 | RDMA_CORE_CAP_OPA_MAD) 536 537 #define RDMA_CORE_PORT_RAW_PACKET (RDMA_CORE_CAP_PROT_RAW_PACKET) 538 539 #define RDMA_CORE_PORT_USNIC (RDMA_CORE_CAP_PROT_USNIC) 540 541 struct ib_port_attr { 542 u64 subnet_prefix; 543 enum ib_port_state state; 544 enum ib_mtu max_mtu; 545 enum ib_mtu active_mtu; 546 int gid_tbl_len; 547 u32 port_cap_flags; 548 u32 max_msg_sz; 549 u32 bad_pkey_cntr; 550 u32 qkey_viol_cntr; 551 u16 pkey_tbl_len; 552 u16 lid; 553 u16 sm_lid; 554 u8 lmc; 555 u8 max_vl_num; 556 u8 sm_sl; 557 u8 subnet_timeout; 558 u8 init_type_reply; 559 u8 active_width; 560 u8 active_speed; 561 u8 phys_state; 562 bool grh_required; 563 }; 564 565 enum ib_device_modify_flags { 566 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0, 567 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1 568 }; 569 570 #define IB_DEVICE_NODE_DESC_MAX 64 571 572 struct ib_device_modify { 573 u64 sys_image_guid; 574 char node_desc[IB_DEVICE_NODE_DESC_MAX]; 575 }; 576 577 enum ib_port_modify_flags { 578 IB_PORT_SHUTDOWN = 1, 579 IB_PORT_INIT_TYPE = (1<<2), 580 IB_PORT_RESET_QKEY_CNTR = (1<<3) 581 }; 582 583 struct ib_port_modify { 584 u32 set_port_cap_mask; 585 u32 clr_port_cap_mask; 586 u8 init_type; 587 }; 588 589 enum ib_event_type { 590 IB_EVENT_CQ_ERR, 591 IB_EVENT_QP_FATAL, 592 IB_EVENT_QP_REQ_ERR, 593 IB_EVENT_QP_ACCESS_ERR, 594 IB_EVENT_COMM_EST, 595 IB_EVENT_SQ_DRAINED, 596 IB_EVENT_PATH_MIG, 597 IB_EVENT_PATH_MIG_ERR, 598 IB_EVENT_DEVICE_FATAL, 599 IB_EVENT_PORT_ACTIVE, 600 IB_EVENT_PORT_ERR, 601 IB_EVENT_LID_CHANGE, 602 IB_EVENT_PKEY_CHANGE, 603 IB_EVENT_SM_CHANGE, 604 IB_EVENT_SRQ_ERR, 605 IB_EVENT_SRQ_LIMIT_REACHED, 606 IB_EVENT_QP_LAST_WQE_REACHED, 607 IB_EVENT_CLIENT_REREGISTER, 608 IB_EVENT_GID_CHANGE, 609 IB_EVENT_WQ_FATAL, 610 }; 611 612 const char *__attribute_const__ ib_event_msg(enum ib_event_type event); 613 614 struct ib_event { 615 struct ib_device *device; 616 union { 617 struct ib_cq *cq; 618 struct ib_qp *qp; 619 struct ib_srq *srq; 620 struct ib_wq *wq; 621 u8 port_num; 622 } element; 623 enum ib_event_type event; 624 }; 625 626 struct ib_event_handler { 627 struct ib_device *device; 628 void (*handler)(struct ib_event_handler *, struct ib_event *); 629 struct list_head list; 630 }; 631 632 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \ 633 do { \ 634 (_ptr)->device = _device; \ 635 (_ptr)->handler = _handler; \ 636 INIT_LIST_HEAD(&(_ptr)->list); \ 637 } while (0) 638 639 struct ib_global_route { 640 union ib_gid dgid; 641 u32 flow_label; 642 u8 sgid_index; 643 u8 hop_limit; 644 u8 traffic_class; 645 }; 646 647 struct ib_grh { 648 __be32 version_tclass_flow; 649 __be16 paylen; 650 u8 next_hdr; 651 u8 hop_limit; 652 union ib_gid sgid; 653 union ib_gid dgid; 654 }; 655 656 union rdma_network_hdr { 657 struct ib_grh ibgrh; 658 struct { 659 /* The IB spec states that if it's IPv4, the header 660 * is located in the last 20 bytes of the header. 661 */ 662 u8 reserved[20]; 663 struct iphdr roce4grh; 664 }; 665 }; 666 667 enum { 668 IB_MULTICAST_QPN = 0xffffff 669 }; 670 671 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF) 672 #define IB_MULTICAST_LID_BASE cpu_to_be16(0xC000) 673 674 enum ib_ah_flags { 675 IB_AH_GRH = 1 676 }; 677 678 enum ib_rate { 679 IB_RATE_PORT_CURRENT = 0, 680 IB_RATE_2_5_GBPS = 2, 681 IB_RATE_5_GBPS = 5, 682 IB_RATE_10_GBPS = 3, 683 IB_RATE_20_GBPS = 6, 684 IB_RATE_30_GBPS = 4, 685 IB_RATE_40_GBPS = 7, 686 IB_RATE_60_GBPS = 8, 687 IB_RATE_80_GBPS = 9, 688 IB_RATE_120_GBPS = 10, 689 IB_RATE_14_GBPS = 11, 690 IB_RATE_56_GBPS = 12, 691 IB_RATE_112_GBPS = 13, 692 IB_RATE_168_GBPS = 14, 693 IB_RATE_25_GBPS = 15, 694 IB_RATE_100_GBPS = 16, 695 IB_RATE_200_GBPS = 17, 696 IB_RATE_300_GBPS = 18 697 }; 698 699 /** 700 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the 701 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be 702 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec. 703 * @rate: rate to convert. 704 */ 705 __attribute_const__ int ib_rate_to_mult(enum ib_rate rate); 706 707 /** 708 * ib_rate_to_mbps - Convert the IB rate enum to Mbps. 709 * For example, IB_RATE_2_5_GBPS will be converted to 2500. 710 * @rate: rate to convert. 711 */ 712 __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate); 713 714 715 /** 716 * enum ib_mr_type - memory region type 717 * @IB_MR_TYPE_MEM_REG: memory region that is used for 718 * normal registration 719 * @IB_MR_TYPE_SIGNATURE: memory region that is used for 720 * signature operations (data-integrity 721 * capable regions) 722 * @IB_MR_TYPE_SG_GAPS: memory region that is capable to 723 * register any arbitrary sg lists (without 724 * the normal mr constraints - see 725 * ib_map_mr_sg) 726 */ 727 enum ib_mr_type { 728 IB_MR_TYPE_MEM_REG, 729 IB_MR_TYPE_SIGNATURE, 730 IB_MR_TYPE_SG_GAPS, 731 }; 732 733 /** 734 * Signature types 735 * IB_SIG_TYPE_NONE: Unprotected. 736 * IB_SIG_TYPE_T10_DIF: Type T10-DIF 737 */ 738 enum ib_signature_type { 739 IB_SIG_TYPE_NONE, 740 IB_SIG_TYPE_T10_DIF, 741 }; 742 743 /** 744 * Signature T10-DIF block-guard types 745 * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules. 746 * IB_T10DIF_CSUM: Corresponds to IP checksum rules. 747 */ 748 enum ib_t10_dif_bg_type { 749 IB_T10DIF_CRC, 750 IB_T10DIF_CSUM 751 }; 752 753 /** 754 * struct ib_t10_dif_domain - Parameters specific for T10-DIF 755 * domain. 756 * @bg_type: T10-DIF block guard type (CRC|CSUM) 757 * @pi_interval: protection information interval. 758 * @bg: seed of guard computation. 759 * @app_tag: application tag of guard block 760 * @ref_tag: initial guard block reference tag. 761 * @ref_remap: Indicate wethear the reftag increments each block 762 * @app_escape: Indicate to skip block check if apptag=0xffff 763 * @ref_escape: Indicate to skip block check if reftag=0xffffffff 764 * @apptag_check_mask: check bitmask of application tag. 765 */ 766 struct ib_t10_dif_domain { 767 enum ib_t10_dif_bg_type bg_type; 768 u16 pi_interval; 769 u16 bg; 770 u16 app_tag; 771 u32 ref_tag; 772 bool ref_remap; 773 bool app_escape; 774 bool ref_escape; 775 u16 apptag_check_mask; 776 }; 777 778 /** 779 * struct ib_sig_domain - Parameters for signature domain 780 * @sig_type: specific signauture type 781 * @sig: union of all signature domain attributes that may 782 * be used to set domain layout. 783 */ 784 struct ib_sig_domain { 785 enum ib_signature_type sig_type; 786 union { 787 struct ib_t10_dif_domain dif; 788 } sig; 789 }; 790 791 /** 792 * struct ib_sig_attrs - Parameters for signature handover operation 793 * @check_mask: bitmask for signature byte check (8 bytes) 794 * @mem: memory domain layout desciptor. 795 * @wire: wire domain layout desciptor. 796 */ 797 struct ib_sig_attrs { 798 u8 check_mask; 799 struct ib_sig_domain mem; 800 struct ib_sig_domain wire; 801 }; 802 803 enum ib_sig_err_type { 804 IB_SIG_BAD_GUARD, 805 IB_SIG_BAD_REFTAG, 806 IB_SIG_BAD_APPTAG, 807 }; 808 809 /** 810 * struct ib_sig_err - signature error descriptor 811 */ 812 struct ib_sig_err { 813 enum ib_sig_err_type err_type; 814 u32 expected; 815 u32 actual; 816 u64 sig_err_offset; 817 u32 key; 818 }; 819 820 enum ib_mr_status_check { 821 IB_MR_CHECK_SIG_STATUS = 1, 822 }; 823 824 /** 825 * struct ib_mr_status - Memory region status container 826 * 827 * @fail_status: Bitmask of MR checks status. For each 828 * failed check a corresponding status bit is set. 829 * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS 830 * failure. 831 */ 832 struct ib_mr_status { 833 u32 fail_status; 834 struct ib_sig_err sig_err; 835 }; 836 837 /** 838 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate 839 * enum. 840 * @mult: multiple to convert. 841 */ 842 __attribute_const__ enum ib_rate mult_to_ib_rate(int mult); 843 844 enum rdma_ah_attr_type { 845 RDMA_AH_ATTR_TYPE_IB, 846 RDMA_AH_ATTR_TYPE_ROCE, 847 RDMA_AH_ATTR_TYPE_OPA, 848 }; 849 850 struct ib_ah_attr { 851 u16 dlid; 852 u8 src_path_bits; 853 }; 854 855 struct roce_ah_attr { 856 u8 dmac[ETH_ALEN]; 857 }; 858 859 struct opa_ah_attr { 860 u32 dlid; 861 u8 src_path_bits; 862 }; 863 864 struct rdma_ah_attr { 865 struct ib_global_route grh; 866 u8 sl; 867 u8 static_rate; 868 u8 port_num; 869 u8 ah_flags; 870 enum rdma_ah_attr_type type; 871 union { 872 struct ib_ah_attr ib; 873 struct roce_ah_attr roce; 874 struct opa_ah_attr opa; 875 }; 876 }; 877 878 enum ib_wc_status { 879 IB_WC_SUCCESS, 880 IB_WC_LOC_LEN_ERR, 881 IB_WC_LOC_QP_OP_ERR, 882 IB_WC_LOC_EEC_OP_ERR, 883 IB_WC_LOC_PROT_ERR, 884 IB_WC_WR_FLUSH_ERR, 885 IB_WC_MW_BIND_ERR, 886 IB_WC_BAD_RESP_ERR, 887 IB_WC_LOC_ACCESS_ERR, 888 IB_WC_REM_INV_REQ_ERR, 889 IB_WC_REM_ACCESS_ERR, 890 IB_WC_REM_OP_ERR, 891 IB_WC_RETRY_EXC_ERR, 892 IB_WC_RNR_RETRY_EXC_ERR, 893 IB_WC_LOC_RDD_VIOL_ERR, 894 IB_WC_REM_INV_RD_REQ_ERR, 895 IB_WC_REM_ABORT_ERR, 896 IB_WC_INV_EECN_ERR, 897 IB_WC_INV_EEC_STATE_ERR, 898 IB_WC_FATAL_ERR, 899 IB_WC_RESP_TIMEOUT_ERR, 900 IB_WC_GENERAL_ERR 901 }; 902 903 const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status); 904 905 enum ib_wc_opcode { 906 IB_WC_SEND, 907 IB_WC_RDMA_WRITE, 908 IB_WC_RDMA_READ, 909 IB_WC_COMP_SWAP, 910 IB_WC_FETCH_ADD, 911 IB_WC_LSO, 912 IB_WC_LOCAL_INV, 913 IB_WC_REG_MR, 914 IB_WC_MASKED_COMP_SWAP, 915 IB_WC_MASKED_FETCH_ADD, 916 /* 917 * Set value of IB_WC_RECV so consumers can test if a completion is a 918 * receive by testing (opcode & IB_WC_RECV). 919 */ 920 IB_WC_RECV = 1 << 7, 921 IB_WC_RECV_RDMA_WITH_IMM 922 }; 923 924 enum ib_wc_flags { 925 IB_WC_GRH = 1, 926 IB_WC_WITH_IMM = (1<<1), 927 IB_WC_WITH_INVALIDATE = (1<<2), 928 IB_WC_IP_CSUM_OK = (1<<3), 929 IB_WC_WITH_SMAC = (1<<4), 930 IB_WC_WITH_VLAN = (1<<5), 931 IB_WC_WITH_NETWORK_HDR_TYPE = (1<<6), 932 }; 933 934 struct ib_wc { 935 union { 936 u64 wr_id; 937 struct ib_cqe *wr_cqe; 938 }; 939 enum ib_wc_status status; 940 enum ib_wc_opcode opcode; 941 u32 vendor_err; 942 u32 byte_len; 943 struct ib_qp *qp; 944 union { 945 __be32 imm_data; 946 u32 invalidate_rkey; 947 } ex; 948 u32 src_qp; 949 int wc_flags; 950 u16 pkey_index; 951 u16 slid; 952 u8 sl; 953 u8 dlid_path_bits; 954 u8 port_num; /* valid only for DR SMPs on switches */ 955 u8 smac[ETH_ALEN]; 956 u16 vlan_id; 957 u8 network_hdr_type; 958 }; 959 960 enum ib_cq_notify_flags { 961 IB_CQ_SOLICITED = 1 << 0, 962 IB_CQ_NEXT_COMP = 1 << 1, 963 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP, 964 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2, 965 }; 966 967 enum ib_srq_type { 968 IB_SRQT_BASIC, 969 IB_SRQT_XRC 970 }; 971 972 enum ib_srq_attr_mask { 973 IB_SRQ_MAX_WR = 1 << 0, 974 IB_SRQ_LIMIT = 1 << 1, 975 }; 976 977 struct ib_srq_attr { 978 u32 max_wr; 979 u32 max_sge; 980 u32 srq_limit; 981 }; 982 983 struct ib_srq_init_attr { 984 void (*event_handler)(struct ib_event *, void *); 985 void *srq_context; 986 struct ib_srq_attr attr; 987 enum ib_srq_type srq_type; 988 989 union { 990 struct { 991 struct ib_xrcd *xrcd; 992 struct ib_cq *cq; 993 } xrc; 994 } ext; 995 }; 996 997 struct ib_qp_cap { 998 u32 max_send_wr; 999 u32 max_recv_wr; 1000 u32 max_send_sge; 1001 u32 max_recv_sge; 1002 u32 max_inline_data; 1003 1004 /* 1005 * Maximum number of rdma_rw_ctx structures in flight at a time. 1006 * ib_create_qp() will calculate the right amount of neededed WRs 1007 * and MRs based on this. 1008 */ 1009 u32 max_rdma_ctxs; 1010 }; 1011 1012 enum ib_sig_type { 1013 IB_SIGNAL_ALL_WR, 1014 IB_SIGNAL_REQ_WR 1015 }; 1016 1017 enum ib_qp_type { 1018 /* 1019 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries 1020 * here (and in that order) since the MAD layer uses them as 1021 * indices into a 2-entry table. 1022 */ 1023 IB_QPT_SMI, 1024 IB_QPT_GSI, 1025 1026 IB_QPT_RC, 1027 IB_QPT_UC, 1028 IB_QPT_UD, 1029 IB_QPT_RAW_IPV6, 1030 IB_QPT_RAW_ETHERTYPE, 1031 IB_QPT_RAW_PACKET = 8, 1032 IB_QPT_XRC_INI = 9, 1033 IB_QPT_XRC_TGT, 1034 IB_QPT_MAX, 1035 /* Reserve a range for qp types internal to the low level driver. 1036 * These qp types will not be visible at the IB core layer, so the 1037 * IB_QPT_MAX usages should not be affected in the core layer 1038 */ 1039 IB_QPT_RESERVED1 = 0x1000, 1040 IB_QPT_RESERVED2, 1041 IB_QPT_RESERVED3, 1042 IB_QPT_RESERVED4, 1043 IB_QPT_RESERVED5, 1044 IB_QPT_RESERVED6, 1045 IB_QPT_RESERVED7, 1046 IB_QPT_RESERVED8, 1047 IB_QPT_RESERVED9, 1048 IB_QPT_RESERVED10, 1049 }; 1050 1051 enum ib_qp_create_flags { 1052 IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0, 1053 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1, 1054 IB_QP_CREATE_CROSS_CHANNEL = 1 << 2, 1055 IB_QP_CREATE_MANAGED_SEND = 1 << 3, 1056 IB_QP_CREATE_MANAGED_RECV = 1 << 4, 1057 IB_QP_CREATE_NETIF_QP = 1 << 5, 1058 IB_QP_CREATE_SIGNATURE_EN = 1 << 6, 1059 /* FREE = 1 << 7, */ 1060 IB_QP_CREATE_SCATTER_FCS = 1 << 8, 1061 IB_QP_CREATE_CVLAN_STRIPPING = 1 << 9, 1062 /* reserve bits 26-31 for low level drivers' internal use */ 1063 IB_QP_CREATE_RESERVED_START = 1 << 26, 1064 IB_QP_CREATE_RESERVED_END = 1 << 31, 1065 }; 1066 1067 /* 1068 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler 1069 * callback to destroy the passed in QP. 1070 */ 1071 1072 struct ib_qp_init_attr { 1073 void (*event_handler)(struct ib_event *, void *); 1074 void *qp_context; 1075 struct ib_cq *send_cq; 1076 struct ib_cq *recv_cq; 1077 struct ib_srq *srq; 1078 struct ib_xrcd *xrcd; /* XRC TGT QPs only */ 1079 struct ib_qp_cap cap; 1080 enum ib_sig_type sq_sig_type; 1081 enum ib_qp_type qp_type; 1082 enum ib_qp_create_flags create_flags; 1083 1084 /* 1085 * Only needed for special QP types, or when using the RW API. 1086 */ 1087 u8 port_num; 1088 struct ib_rwq_ind_table *rwq_ind_tbl; 1089 }; 1090 1091 struct ib_qp_open_attr { 1092 void (*event_handler)(struct ib_event *, void *); 1093 void *qp_context; 1094 u32 qp_num; 1095 enum ib_qp_type qp_type; 1096 }; 1097 1098 enum ib_rnr_timeout { 1099 IB_RNR_TIMER_655_36 = 0, 1100 IB_RNR_TIMER_000_01 = 1, 1101 IB_RNR_TIMER_000_02 = 2, 1102 IB_RNR_TIMER_000_03 = 3, 1103 IB_RNR_TIMER_000_04 = 4, 1104 IB_RNR_TIMER_000_06 = 5, 1105 IB_RNR_TIMER_000_08 = 6, 1106 IB_RNR_TIMER_000_12 = 7, 1107 IB_RNR_TIMER_000_16 = 8, 1108 IB_RNR_TIMER_000_24 = 9, 1109 IB_RNR_TIMER_000_32 = 10, 1110 IB_RNR_TIMER_000_48 = 11, 1111 IB_RNR_TIMER_000_64 = 12, 1112 IB_RNR_TIMER_000_96 = 13, 1113 IB_RNR_TIMER_001_28 = 14, 1114 IB_RNR_TIMER_001_92 = 15, 1115 IB_RNR_TIMER_002_56 = 16, 1116 IB_RNR_TIMER_003_84 = 17, 1117 IB_RNR_TIMER_005_12 = 18, 1118 IB_RNR_TIMER_007_68 = 19, 1119 IB_RNR_TIMER_010_24 = 20, 1120 IB_RNR_TIMER_015_36 = 21, 1121 IB_RNR_TIMER_020_48 = 22, 1122 IB_RNR_TIMER_030_72 = 23, 1123 IB_RNR_TIMER_040_96 = 24, 1124 IB_RNR_TIMER_061_44 = 25, 1125 IB_RNR_TIMER_081_92 = 26, 1126 IB_RNR_TIMER_122_88 = 27, 1127 IB_RNR_TIMER_163_84 = 28, 1128 IB_RNR_TIMER_245_76 = 29, 1129 IB_RNR_TIMER_327_68 = 30, 1130 IB_RNR_TIMER_491_52 = 31 1131 }; 1132 1133 enum ib_qp_attr_mask { 1134 IB_QP_STATE = 1, 1135 IB_QP_CUR_STATE = (1<<1), 1136 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2), 1137 IB_QP_ACCESS_FLAGS = (1<<3), 1138 IB_QP_PKEY_INDEX = (1<<4), 1139 IB_QP_PORT = (1<<5), 1140 IB_QP_QKEY = (1<<6), 1141 IB_QP_AV = (1<<7), 1142 IB_QP_PATH_MTU = (1<<8), 1143 IB_QP_TIMEOUT = (1<<9), 1144 IB_QP_RETRY_CNT = (1<<10), 1145 IB_QP_RNR_RETRY = (1<<11), 1146 IB_QP_RQ_PSN = (1<<12), 1147 IB_QP_MAX_QP_RD_ATOMIC = (1<<13), 1148 IB_QP_ALT_PATH = (1<<14), 1149 IB_QP_MIN_RNR_TIMER = (1<<15), 1150 IB_QP_SQ_PSN = (1<<16), 1151 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17), 1152 IB_QP_PATH_MIG_STATE = (1<<18), 1153 IB_QP_CAP = (1<<19), 1154 IB_QP_DEST_QPN = (1<<20), 1155 IB_QP_RESERVED1 = (1<<21), 1156 IB_QP_RESERVED2 = (1<<22), 1157 IB_QP_RESERVED3 = (1<<23), 1158 IB_QP_RESERVED4 = (1<<24), 1159 IB_QP_RATE_LIMIT = (1<<25), 1160 }; 1161 1162 enum ib_qp_state { 1163 IB_QPS_RESET, 1164 IB_QPS_INIT, 1165 IB_QPS_RTR, 1166 IB_QPS_RTS, 1167 IB_QPS_SQD, 1168 IB_QPS_SQE, 1169 IB_QPS_ERR 1170 }; 1171 1172 enum ib_mig_state { 1173 IB_MIG_MIGRATED, 1174 IB_MIG_REARM, 1175 IB_MIG_ARMED 1176 }; 1177 1178 enum ib_mw_type { 1179 IB_MW_TYPE_1 = 1, 1180 IB_MW_TYPE_2 = 2 1181 }; 1182 1183 struct ib_qp_attr { 1184 enum ib_qp_state qp_state; 1185 enum ib_qp_state cur_qp_state; 1186 enum ib_mtu path_mtu; 1187 enum ib_mig_state path_mig_state; 1188 u32 qkey; 1189 u32 rq_psn; 1190 u32 sq_psn; 1191 u32 dest_qp_num; 1192 int qp_access_flags; 1193 struct ib_qp_cap cap; 1194 struct rdma_ah_attr ah_attr; 1195 struct rdma_ah_attr alt_ah_attr; 1196 u16 pkey_index; 1197 u16 alt_pkey_index; 1198 u8 en_sqd_async_notify; 1199 u8 sq_draining; 1200 u8 max_rd_atomic; 1201 u8 max_dest_rd_atomic; 1202 u8 min_rnr_timer; 1203 u8 port_num; 1204 u8 timeout; 1205 u8 retry_cnt; 1206 u8 rnr_retry; 1207 u8 alt_port_num; 1208 u8 alt_timeout; 1209 u32 rate_limit; 1210 }; 1211 1212 enum ib_wr_opcode { 1213 IB_WR_RDMA_WRITE, 1214 IB_WR_RDMA_WRITE_WITH_IMM, 1215 IB_WR_SEND, 1216 IB_WR_SEND_WITH_IMM, 1217 IB_WR_RDMA_READ, 1218 IB_WR_ATOMIC_CMP_AND_SWP, 1219 IB_WR_ATOMIC_FETCH_AND_ADD, 1220 IB_WR_LSO, 1221 IB_WR_SEND_WITH_INV, 1222 IB_WR_RDMA_READ_WITH_INV, 1223 IB_WR_LOCAL_INV, 1224 IB_WR_REG_MR, 1225 IB_WR_MASKED_ATOMIC_CMP_AND_SWP, 1226 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD, 1227 IB_WR_REG_SIG_MR, 1228 /* reserve values for low level drivers' internal use. 1229 * These values will not be used at all in the ib core layer. 1230 */ 1231 IB_WR_RESERVED1 = 0xf0, 1232 IB_WR_RESERVED2, 1233 IB_WR_RESERVED3, 1234 IB_WR_RESERVED4, 1235 IB_WR_RESERVED5, 1236 IB_WR_RESERVED6, 1237 IB_WR_RESERVED7, 1238 IB_WR_RESERVED8, 1239 IB_WR_RESERVED9, 1240 IB_WR_RESERVED10, 1241 }; 1242 1243 enum ib_send_flags { 1244 IB_SEND_FENCE = 1, 1245 IB_SEND_SIGNALED = (1<<1), 1246 IB_SEND_SOLICITED = (1<<2), 1247 IB_SEND_INLINE = (1<<3), 1248 IB_SEND_IP_CSUM = (1<<4), 1249 1250 /* reserve bits 26-31 for low level drivers' internal use */ 1251 IB_SEND_RESERVED_START = (1 << 26), 1252 IB_SEND_RESERVED_END = (1 << 31), 1253 }; 1254 1255 struct ib_sge { 1256 u64 addr; 1257 u32 length; 1258 u32 lkey; 1259 }; 1260 1261 struct ib_cqe { 1262 void (*done)(struct ib_cq *cq, struct ib_wc *wc); 1263 }; 1264 1265 struct ib_send_wr { 1266 struct ib_send_wr *next; 1267 union { 1268 u64 wr_id; 1269 struct ib_cqe *wr_cqe; 1270 }; 1271 struct ib_sge *sg_list; 1272 int num_sge; 1273 enum ib_wr_opcode opcode; 1274 int send_flags; 1275 union { 1276 __be32 imm_data; 1277 u32 invalidate_rkey; 1278 } ex; 1279 }; 1280 1281 struct ib_rdma_wr { 1282 struct ib_send_wr wr; 1283 u64 remote_addr; 1284 u32 rkey; 1285 }; 1286 1287 static inline struct ib_rdma_wr *rdma_wr(struct ib_send_wr *wr) 1288 { 1289 return container_of(wr, struct ib_rdma_wr, wr); 1290 } 1291 1292 struct ib_atomic_wr { 1293 struct ib_send_wr wr; 1294 u64 remote_addr; 1295 u64 compare_add; 1296 u64 swap; 1297 u64 compare_add_mask; 1298 u64 swap_mask; 1299 u32 rkey; 1300 }; 1301 1302 static inline struct ib_atomic_wr *atomic_wr(struct ib_send_wr *wr) 1303 { 1304 return container_of(wr, struct ib_atomic_wr, wr); 1305 } 1306 1307 struct ib_ud_wr { 1308 struct ib_send_wr wr; 1309 struct ib_ah *ah; 1310 void *header; 1311 int hlen; 1312 int mss; 1313 u32 remote_qpn; 1314 u32 remote_qkey; 1315 u16 pkey_index; /* valid for GSI only */ 1316 u8 port_num; /* valid for DR SMPs on switch only */ 1317 }; 1318 1319 static inline struct ib_ud_wr *ud_wr(struct ib_send_wr *wr) 1320 { 1321 return container_of(wr, struct ib_ud_wr, wr); 1322 } 1323 1324 struct ib_reg_wr { 1325 struct ib_send_wr wr; 1326 struct ib_mr *mr; 1327 u32 key; 1328 int access; 1329 }; 1330 1331 static inline struct ib_reg_wr *reg_wr(struct ib_send_wr *wr) 1332 { 1333 return container_of(wr, struct ib_reg_wr, wr); 1334 } 1335 1336 struct ib_sig_handover_wr { 1337 struct ib_send_wr wr; 1338 struct ib_sig_attrs *sig_attrs; 1339 struct ib_mr *sig_mr; 1340 int access_flags; 1341 struct ib_sge *prot; 1342 }; 1343 1344 static inline struct ib_sig_handover_wr *sig_handover_wr(struct ib_send_wr *wr) 1345 { 1346 return container_of(wr, struct ib_sig_handover_wr, wr); 1347 } 1348 1349 struct ib_recv_wr { 1350 struct ib_recv_wr *next; 1351 union { 1352 u64 wr_id; 1353 struct ib_cqe *wr_cqe; 1354 }; 1355 struct ib_sge *sg_list; 1356 int num_sge; 1357 }; 1358 1359 enum ib_access_flags { 1360 IB_ACCESS_LOCAL_WRITE = 1, 1361 IB_ACCESS_REMOTE_WRITE = (1<<1), 1362 IB_ACCESS_REMOTE_READ = (1<<2), 1363 IB_ACCESS_REMOTE_ATOMIC = (1<<3), 1364 IB_ACCESS_MW_BIND = (1<<4), 1365 IB_ZERO_BASED = (1<<5), 1366 IB_ACCESS_ON_DEMAND = (1<<6), 1367 IB_ACCESS_HUGETLB = (1<<7), 1368 }; 1369 1370 /* 1371 * XXX: these are apparently used for ->rereg_user_mr, no idea why they 1372 * are hidden here instead of a uapi header! 1373 */ 1374 enum ib_mr_rereg_flags { 1375 IB_MR_REREG_TRANS = 1, 1376 IB_MR_REREG_PD = (1<<1), 1377 IB_MR_REREG_ACCESS = (1<<2), 1378 IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1) 1379 }; 1380 1381 struct ib_fmr_attr { 1382 int max_pages; 1383 int max_maps; 1384 u8 page_shift; 1385 }; 1386 1387 struct ib_umem; 1388 1389 enum rdma_remove_reason { 1390 /* Userspace requested uobject deletion. Call could fail */ 1391 RDMA_REMOVE_DESTROY, 1392 /* Context deletion. This call should delete the actual object itself */ 1393 RDMA_REMOVE_CLOSE, 1394 /* Driver is being hot-unplugged. This call should delete the actual object itself */ 1395 RDMA_REMOVE_DRIVER_REMOVE, 1396 /* Context is being cleaned-up, but commit was just completed */ 1397 RDMA_REMOVE_DURING_CLEANUP, 1398 }; 1399 1400 struct ib_rdmacg_object { 1401 #ifdef CONFIG_CGROUP_RDMA 1402 struct rdma_cgroup *cg; /* owner rdma cgroup */ 1403 #endif 1404 }; 1405 1406 struct ib_ucontext { 1407 struct ib_device *device; 1408 struct ib_uverbs_file *ufile; 1409 int closing; 1410 1411 /* locking the uobjects_list */ 1412 struct mutex uobjects_lock; 1413 struct list_head uobjects; 1414 /* protects cleanup process from other actions */ 1415 struct rw_semaphore cleanup_rwsem; 1416 enum rdma_remove_reason cleanup_reason; 1417 1418 struct pid *tgid; 1419 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING 1420 struct rb_root umem_tree; 1421 /* 1422 * Protects .umem_rbroot and tree, as well as odp_mrs_count and 1423 * mmu notifiers registration. 1424 */ 1425 struct rw_semaphore umem_rwsem; 1426 void (*invalidate_range)(struct ib_umem *umem, 1427 unsigned long start, unsigned long end); 1428 1429 struct mmu_notifier mn; 1430 atomic_t notifier_count; 1431 /* A list of umems that don't have private mmu notifier counters yet. */ 1432 struct list_head no_private_counters; 1433 int odp_mrs_count; 1434 #endif 1435 1436 struct ib_rdmacg_object cg_obj; 1437 }; 1438 1439 struct ib_uobject { 1440 u64 user_handle; /* handle given to us by userspace */ 1441 struct ib_ucontext *context; /* associated user context */ 1442 void *object; /* containing object */ 1443 struct list_head list; /* link to context's list */ 1444 struct ib_rdmacg_object cg_obj; /* rdmacg object */ 1445 int id; /* index into kernel idr */ 1446 struct kref ref; 1447 atomic_t usecnt; /* protects exclusive access */ 1448 struct rcu_head rcu; /* kfree_rcu() overhead */ 1449 1450 const struct uverbs_obj_type *type; 1451 }; 1452 1453 struct ib_uobject_file { 1454 struct ib_uobject uobj; 1455 /* ufile contains the lock between context release and file close */ 1456 struct ib_uverbs_file *ufile; 1457 }; 1458 1459 struct ib_udata { 1460 const void __user *inbuf; 1461 void __user *outbuf; 1462 size_t inlen; 1463 size_t outlen; 1464 }; 1465 1466 struct ib_pd { 1467 u32 local_dma_lkey; 1468 u32 flags; 1469 struct ib_device *device; 1470 struct ib_uobject *uobject; 1471 atomic_t usecnt; /* count all resources */ 1472 1473 u32 unsafe_global_rkey; 1474 1475 /* 1476 * Implementation details of the RDMA core, don't use in drivers: 1477 */ 1478 struct ib_mr *__internal_mr; 1479 }; 1480 1481 struct ib_xrcd { 1482 struct ib_device *device; 1483 atomic_t usecnt; /* count all exposed resources */ 1484 struct inode *inode; 1485 1486 struct mutex tgt_qp_mutex; 1487 struct list_head tgt_qp_list; 1488 }; 1489 1490 struct ib_ah { 1491 struct ib_device *device; 1492 struct ib_pd *pd; 1493 struct ib_uobject *uobject; 1494 enum rdma_ah_attr_type type; 1495 }; 1496 1497 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context); 1498 1499 enum ib_poll_context { 1500 IB_POLL_DIRECT, /* caller context, no hw completions */ 1501 IB_POLL_SOFTIRQ, /* poll from softirq context */ 1502 IB_POLL_WORKQUEUE, /* poll from workqueue */ 1503 }; 1504 1505 struct ib_cq { 1506 struct ib_device *device; 1507 struct ib_uobject *uobject; 1508 ib_comp_handler comp_handler; 1509 void (*event_handler)(struct ib_event *, void *); 1510 void *cq_context; 1511 int cqe; 1512 atomic_t usecnt; /* count number of work queues */ 1513 enum ib_poll_context poll_ctx; 1514 struct ib_wc *wc; 1515 union { 1516 struct irq_poll iop; 1517 struct work_struct work; 1518 }; 1519 }; 1520 1521 struct ib_srq { 1522 struct ib_device *device; 1523 struct ib_pd *pd; 1524 struct ib_uobject *uobject; 1525 void (*event_handler)(struct ib_event *, void *); 1526 void *srq_context; 1527 enum ib_srq_type srq_type; 1528 atomic_t usecnt; 1529 1530 union { 1531 struct { 1532 struct ib_xrcd *xrcd; 1533 struct ib_cq *cq; 1534 u32 srq_num; 1535 } xrc; 1536 } ext; 1537 }; 1538 1539 enum ib_raw_packet_caps { 1540 /* Strip cvlan from incoming packet and report it in the matching work 1541 * completion is supported. 1542 */ 1543 IB_RAW_PACKET_CAP_CVLAN_STRIPPING = (1 << 0), 1544 /* Scatter FCS field of an incoming packet to host memory is supported. 1545 */ 1546 IB_RAW_PACKET_CAP_SCATTER_FCS = (1 << 1), 1547 /* Checksum offloads are supported (for both send and receive). */ 1548 IB_RAW_PACKET_CAP_IP_CSUM = (1 << 2), 1549 }; 1550 1551 enum ib_wq_type { 1552 IB_WQT_RQ 1553 }; 1554 1555 enum ib_wq_state { 1556 IB_WQS_RESET, 1557 IB_WQS_RDY, 1558 IB_WQS_ERR 1559 }; 1560 1561 struct ib_wq { 1562 struct ib_device *device; 1563 struct ib_uobject *uobject; 1564 void *wq_context; 1565 void (*event_handler)(struct ib_event *, void *); 1566 struct ib_pd *pd; 1567 struct ib_cq *cq; 1568 u32 wq_num; 1569 enum ib_wq_state state; 1570 enum ib_wq_type wq_type; 1571 atomic_t usecnt; 1572 }; 1573 1574 enum ib_wq_flags { 1575 IB_WQ_FLAGS_CVLAN_STRIPPING = 1 << 0, 1576 IB_WQ_FLAGS_SCATTER_FCS = 1 << 1, 1577 }; 1578 1579 struct ib_wq_init_attr { 1580 void *wq_context; 1581 enum ib_wq_type wq_type; 1582 u32 max_wr; 1583 u32 max_sge; 1584 struct ib_cq *cq; 1585 void (*event_handler)(struct ib_event *, void *); 1586 u32 create_flags; /* Use enum ib_wq_flags */ 1587 }; 1588 1589 enum ib_wq_attr_mask { 1590 IB_WQ_STATE = 1 << 0, 1591 IB_WQ_CUR_STATE = 1 << 1, 1592 IB_WQ_FLAGS = 1 << 2, 1593 }; 1594 1595 struct ib_wq_attr { 1596 enum ib_wq_state wq_state; 1597 enum ib_wq_state curr_wq_state; 1598 u32 flags; /* Use enum ib_wq_flags */ 1599 u32 flags_mask; /* Use enum ib_wq_flags */ 1600 }; 1601 1602 struct ib_rwq_ind_table { 1603 struct ib_device *device; 1604 struct ib_uobject *uobject; 1605 atomic_t usecnt; 1606 u32 ind_tbl_num; 1607 u32 log_ind_tbl_size; 1608 struct ib_wq **ind_tbl; 1609 }; 1610 1611 struct ib_rwq_ind_table_init_attr { 1612 u32 log_ind_tbl_size; 1613 /* Each entry is a pointer to Receive Work Queue */ 1614 struct ib_wq **ind_tbl; 1615 }; 1616 1617 enum port_pkey_state { 1618 IB_PORT_PKEY_NOT_VALID = 0, 1619 IB_PORT_PKEY_VALID = 1, 1620 IB_PORT_PKEY_LISTED = 2, 1621 }; 1622 1623 struct ib_qp_security; 1624 1625 struct ib_port_pkey { 1626 enum port_pkey_state state; 1627 u16 pkey_index; 1628 u8 port_num; 1629 struct list_head qp_list; 1630 struct list_head to_error_list; 1631 struct ib_qp_security *sec; 1632 }; 1633 1634 struct ib_ports_pkeys { 1635 struct ib_port_pkey main; 1636 struct ib_port_pkey alt; 1637 }; 1638 1639 struct ib_qp_security { 1640 struct ib_qp *qp; 1641 struct ib_device *dev; 1642 /* Hold this mutex when changing port and pkey settings. */ 1643 struct mutex mutex; 1644 struct ib_ports_pkeys *ports_pkeys; 1645 /* A list of all open shared QP handles. Required to enforce security 1646 * properly for all users of a shared QP. 1647 */ 1648 struct list_head shared_qp_list; 1649 void *security; 1650 bool destroying; 1651 atomic_t error_list_count; 1652 struct completion error_complete; 1653 int error_comps_pending; 1654 }; 1655 1656 /* 1657 * @max_write_sge: Maximum SGE elements per RDMA WRITE request. 1658 * @max_read_sge: Maximum SGE elements per RDMA READ request. 1659 */ 1660 struct ib_qp { 1661 struct ib_device *device; 1662 struct ib_pd *pd; 1663 struct ib_cq *send_cq; 1664 struct ib_cq *recv_cq; 1665 spinlock_t mr_lock; 1666 int mrs_used; 1667 struct list_head rdma_mrs; 1668 struct list_head sig_mrs; 1669 struct ib_srq *srq; 1670 struct ib_xrcd *xrcd; /* XRC TGT QPs only */ 1671 struct list_head xrcd_list; 1672 1673 /* count times opened, mcast attaches, flow attaches */ 1674 atomic_t usecnt; 1675 struct list_head open_list; 1676 struct ib_qp *real_qp; 1677 struct ib_uobject *uobject; 1678 void (*event_handler)(struct ib_event *, void *); 1679 void *qp_context; 1680 u32 qp_num; 1681 u32 max_write_sge; 1682 u32 max_read_sge; 1683 enum ib_qp_type qp_type; 1684 struct ib_rwq_ind_table *rwq_ind_tbl; 1685 struct ib_qp_security *qp_sec; 1686 u8 port; 1687 }; 1688 1689 struct ib_mr { 1690 struct ib_device *device; 1691 struct ib_pd *pd; 1692 u32 lkey; 1693 u32 rkey; 1694 u64 iova; 1695 u32 length; 1696 unsigned int page_size; 1697 bool need_inval; 1698 union { 1699 struct ib_uobject *uobject; /* user */ 1700 struct list_head qp_entry; /* FR */ 1701 }; 1702 }; 1703 1704 struct ib_mw { 1705 struct ib_device *device; 1706 struct ib_pd *pd; 1707 struct ib_uobject *uobject; 1708 u32 rkey; 1709 enum ib_mw_type type; 1710 }; 1711 1712 struct ib_fmr { 1713 struct ib_device *device; 1714 struct ib_pd *pd; 1715 struct list_head list; 1716 u32 lkey; 1717 u32 rkey; 1718 }; 1719 1720 /* Supported steering options */ 1721 enum ib_flow_attr_type { 1722 /* steering according to rule specifications */ 1723 IB_FLOW_ATTR_NORMAL = 0x0, 1724 /* default unicast and multicast rule - 1725 * receive all Eth traffic which isn't steered to any QP 1726 */ 1727 IB_FLOW_ATTR_ALL_DEFAULT = 0x1, 1728 /* default multicast rule - 1729 * receive all Eth multicast traffic which isn't steered to any QP 1730 */ 1731 IB_FLOW_ATTR_MC_DEFAULT = 0x2, 1732 /* sniffer rule - receive all port traffic */ 1733 IB_FLOW_ATTR_SNIFFER = 0x3 1734 }; 1735 1736 /* Supported steering header types */ 1737 enum ib_flow_spec_type { 1738 /* L2 headers*/ 1739 IB_FLOW_SPEC_ETH = 0x20, 1740 IB_FLOW_SPEC_IB = 0x22, 1741 /* L3 header*/ 1742 IB_FLOW_SPEC_IPV4 = 0x30, 1743 IB_FLOW_SPEC_IPV6 = 0x31, 1744 /* L4 headers*/ 1745 IB_FLOW_SPEC_TCP = 0x40, 1746 IB_FLOW_SPEC_UDP = 0x41, 1747 IB_FLOW_SPEC_VXLAN_TUNNEL = 0x50, 1748 IB_FLOW_SPEC_INNER = 0x100, 1749 /* Actions */ 1750 IB_FLOW_SPEC_ACTION_TAG = 0x1000, 1751 IB_FLOW_SPEC_ACTION_DROP = 0x1001, 1752 }; 1753 #define IB_FLOW_SPEC_LAYER_MASK 0xF0 1754 #define IB_FLOW_SPEC_SUPPORT_LAYERS 8 1755 1756 /* Flow steering rule priority is set according to it's domain. 1757 * Lower domain value means higher priority. 1758 */ 1759 enum ib_flow_domain { 1760 IB_FLOW_DOMAIN_USER, 1761 IB_FLOW_DOMAIN_ETHTOOL, 1762 IB_FLOW_DOMAIN_RFS, 1763 IB_FLOW_DOMAIN_NIC, 1764 IB_FLOW_DOMAIN_NUM /* Must be last */ 1765 }; 1766 1767 enum ib_flow_flags { 1768 IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */ 1769 IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 2 /* Must be last */ 1770 }; 1771 1772 struct ib_flow_eth_filter { 1773 u8 dst_mac[6]; 1774 u8 src_mac[6]; 1775 __be16 ether_type; 1776 __be16 vlan_tag; 1777 /* Must be last */ 1778 u8 real_sz[0]; 1779 }; 1780 1781 struct ib_flow_spec_eth { 1782 u32 type; 1783 u16 size; 1784 struct ib_flow_eth_filter val; 1785 struct ib_flow_eth_filter mask; 1786 }; 1787 1788 struct ib_flow_ib_filter { 1789 __be16 dlid; 1790 __u8 sl; 1791 /* Must be last */ 1792 u8 real_sz[0]; 1793 }; 1794 1795 struct ib_flow_spec_ib { 1796 u32 type; 1797 u16 size; 1798 struct ib_flow_ib_filter val; 1799 struct ib_flow_ib_filter mask; 1800 }; 1801 1802 /* IPv4 header flags */ 1803 enum ib_ipv4_flags { 1804 IB_IPV4_DONT_FRAG = 0x2, /* Don't enable packet fragmentation */ 1805 IB_IPV4_MORE_FRAG = 0X4 /* For All fragmented packets except the 1806 last have this flag set */ 1807 }; 1808 1809 struct ib_flow_ipv4_filter { 1810 __be32 src_ip; 1811 __be32 dst_ip; 1812 u8 proto; 1813 u8 tos; 1814 u8 ttl; 1815 u8 flags; 1816 /* Must be last */ 1817 u8 real_sz[0]; 1818 }; 1819 1820 struct ib_flow_spec_ipv4 { 1821 u32 type; 1822 u16 size; 1823 struct ib_flow_ipv4_filter val; 1824 struct ib_flow_ipv4_filter mask; 1825 }; 1826 1827 struct ib_flow_ipv6_filter { 1828 u8 src_ip[16]; 1829 u8 dst_ip[16]; 1830 __be32 flow_label; 1831 u8 next_hdr; 1832 u8 traffic_class; 1833 u8 hop_limit; 1834 /* Must be last */ 1835 u8 real_sz[0]; 1836 }; 1837 1838 struct ib_flow_spec_ipv6 { 1839 u32 type; 1840 u16 size; 1841 struct ib_flow_ipv6_filter val; 1842 struct ib_flow_ipv6_filter mask; 1843 }; 1844 1845 struct ib_flow_tcp_udp_filter { 1846 __be16 dst_port; 1847 __be16 src_port; 1848 /* Must be last */ 1849 u8 real_sz[0]; 1850 }; 1851 1852 struct ib_flow_spec_tcp_udp { 1853 u32 type; 1854 u16 size; 1855 struct ib_flow_tcp_udp_filter val; 1856 struct ib_flow_tcp_udp_filter mask; 1857 }; 1858 1859 struct ib_flow_tunnel_filter { 1860 __be32 tunnel_id; 1861 u8 real_sz[0]; 1862 }; 1863 1864 /* ib_flow_spec_tunnel describes the Vxlan tunnel 1865 * the tunnel_id from val has the vni value 1866 */ 1867 struct ib_flow_spec_tunnel { 1868 u32 type; 1869 u16 size; 1870 struct ib_flow_tunnel_filter val; 1871 struct ib_flow_tunnel_filter mask; 1872 }; 1873 1874 struct ib_flow_spec_action_tag { 1875 enum ib_flow_spec_type type; 1876 u16 size; 1877 u32 tag_id; 1878 }; 1879 1880 struct ib_flow_spec_action_drop { 1881 enum ib_flow_spec_type type; 1882 u16 size; 1883 }; 1884 1885 union ib_flow_spec { 1886 struct { 1887 u32 type; 1888 u16 size; 1889 }; 1890 struct ib_flow_spec_eth eth; 1891 struct ib_flow_spec_ib ib; 1892 struct ib_flow_spec_ipv4 ipv4; 1893 struct ib_flow_spec_tcp_udp tcp_udp; 1894 struct ib_flow_spec_ipv6 ipv6; 1895 struct ib_flow_spec_tunnel tunnel; 1896 struct ib_flow_spec_action_tag flow_tag; 1897 struct ib_flow_spec_action_drop drop; 1898 }; 1899 1900 struct ib_flow_attr { 1901 enum ib_flow_attr_type type; 1902 u16 size; 1903 u16 priority; 1904 u32 flags; 1905 u8 num_of_specs; 1906 u8 port; 1907 /* Following are the optional layers according to user request 1908 * struct ib_flow_spec_xxx 1909 * struct ib_flow_spec_yyy 1910 */ 1911 }; 1912 1913 struct ib_flow { 1914 struct ib_qp *qp; 1915 struct ib_uobject *uobject; 1916 }; 1917 1918 struct ib_mad_hdr; 1919 struct ib_grh; 1920 1921 enum ib_process_mad_flags { 1922 IB_MAD_IGNORE_MKEY = 1, 1923 IB_MAD_IGNORE_BKEY = 2, 1924 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY 1925 }; 1926 1927 enum ib_mad_result { 1928 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */ 1929 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */ 1930 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */ 1931 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */ 1932 }; 1933 1934 struct ib_port_cache { 1935 u64 subnet_prefix; 1936 struct ib_pkey_cache *pkey; 1937 struct ib_gid_table *gid; 1938 u8 lmc; 1939 enum ib_port_state port_state; 1940 }; 1941 1942 struct ib_cache { 1943 rwlock_t lock; 1944 struct ib_event_handler event_handler; 1945 struct ib_port_cache *ports; 1946 }; 1947 1948 struct iw_cm_verbs; 1949 1950 struct ib_port_immutable { 1951 int pkey_tbl_len; 1952 int gid_tbl_len; 1953 u32 core_cap_flags; 1954 u32 max_mad_size; 1955 }; 1956 1957 /* rdma netdev type - specifies protocol type */ 1958 enum rdma_netdev_t { 1959 RDMA_NETDEV_OPA_VNIC, 1960 RDMA_NETDEV_IPOIB, 1961 }; 1962 1963 /** 1964 * struct rdma_netdev - rdma netdev 1965 * For cases where netstack interfacing is required. 1966 */ 1967 struct rdma_netdev { 1968 void *clnt_priv; 1969 struct ib_device *hca; 1970 u8 port_num; 1971 1972 /* cleanup function must be specified */ 1973 void (*free_rdma_netdev)(struct net_device *netdev); 1974 1975 /* control functions */ 1976 void (*set_id)(struct net_device *netdev, int id); 1977 /* send packet */ 1978 int (*send)(struct net_device *dev, struct sk_buff *skb, 1979 struct ib_ah *address, u32 dqpn); 1980 /* multicast */ 1981 int (*attach_mcast)(struct net_device *dev, struct ib_device *hca, 1982 union ib_gid *gid, u16 mlid, 1983 int set_qkey, u32 qkey); 1984 int (*detach_mcast)(struct net_device *dev, struct ib_device *hca, 1985 union ib_gid *gid, u16 mlid); 1986 }; 1987 1988 struct ib_port_pkey_list { 1989 /* Lock to hold while modifying the list. */ 1990 spinlock_t list_lock; 1991 struct list_head pkey_list; 1992 }; 1993 1994 struct ib_device { 1995 /* Do not access @dma_device directly from ULP nor from HW drivers. */ 1996 struct device *dma_device; 1997 1998 char name[IB_DEVICE_NAME_MAX]; 1999 2000 struct list_head event_handler_list; 2001 spinlock_t event_handler_lock; 2002 2003 spinlock_t client_data_lock; 2004 struct list_head core_list; 2005 /* Access to the client_data_list is protected by the client_data_lock 2006 * spinlock and the lists_rwsem read-write semaphore */ 2007 struct list_head client_data_list; 2008 2009 struct ib_cache cache; 2010 /** 2011 * port_immutable is indexed by port number 2012 */ 2013 struct ib_port_immutable *port_immutable; 2014 2015 int num_comp_vectors; 2016 2017 struct ib_port_pkey_list *port_pkey_list; 2018 2019 struct iw_cm_verbs *iwcm; 2020 2021 /** 2022 * alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the 2023 * driver initialized data. The struct is kfree()'ed by the sysfs 2024 * core when the device is removed. A lifespan of -1 in the return 2025 * struct tells the core to set a default lifespan. 2026 */ 2027 struct rdma_hw_stats *(*alloc_hw_stats)(struct ib_device *device, 2028 u8 port_num); 2029 /** 2030 * get_hw_stats - Fill in the counter value(s) in the stats struct. 2031 * @index - The index in the value array we wish to have updated, or 2032 * num_counters if we want all stats updated 2033 * Return codes - 2034 * < 0 - Error, no counters updated 2035 * index - Updated the single counter pointed to by index 2036 * num_counters - Updated all counters (will reset the timestamp 2037 * and prevent further calls for lifespan milliseconds) 2038 * Drivers are allowed to update all counters in leiu of just the 2039 * one given in index at their option 2040 */ 2041 int (*get_hw_stats)(struct ib_device *device, 2042 struct rdma_hw_stats *stats, 2043 u8 port, int index); 2044 int (*query_device)(struct ib_device *device, 2045 struct ib_device_attr *device_attr, 2046 struct ib_udata *udata); 2047 int (*query_port)(struct ib_device *device, 2048 u8 port_num, 2049 struct ib_port_attr *port_attr); 2050 enum rdma_link_layer (*get_link_layer)(struct ib_device *device, 2051 u8 port_num); 2052 /* When calling get_netdev, the HW vendor's driver should return the 2053 * net device of device @device at port @port_num or NULL if such 2054 * a net device doesn't exist. The vendor driver should call dev_hold 2055 * on this net device. The HW vendor's device driver must guarantee 2056 * that this function returns NULL before the net device reaches 2057 * NETDEV_UNREGISTER_FINAL state. 2058 */ 2059 struct net_device *(*get_netdev)(struct ib_device *device, 2060 u8 port_num); 2061 int (*query_gid)(struct ib_device *device, 2062 u8 port_num, int index, 2063 union ib_gid *gid); 2064 /* When calling add_gid, the HW vendor's driver should 2065 * add the gid of device @device at gid index @index of 2066 * port @port_num to be @gid. Meta-info of that gid (for example, 2067 * the network device related to this gid is available 2068 * at @attr. @context allows the HW vendor driver to store extra 2069 * information together with a GID entry. The HW vendor may allocate 2070 * memory to contain this information and store it in @context when a 2071 * new GID entry is written to. Params are consistent until the next 2072 * call of add_gid or delete_gid. The function should return 0 on 2073 * success or error otherwise. The function could be called 2074 * concurrently for different ports. This function is only called 2075 * when roce_gid_table is used. 2076 */ 2077 int (*add_gid)(struct ib_device *device, 2078 u8 port_num, 2079 unsigned int index, 2080 const union ib_gid *gid, 2081 const struct ib_gid_attr *attr, 2082 void **context); 2083 /* When calling del_gid, the HW vendor's driver should delete the 2084 * gid of device @device at gid index @index of port @port_num. 2085 * Upon the deletion of a GID entry, the HW vendor must free any 2086 * allocated memory. The caller will clear @context afterwards. 2087 * This function is only called when roce_gid_table is used. 2088 */ 2089 int (*del_gid)(struct ib_device *device, 2090 u8 port_num, 2091 unsigned int index, 2092 void **context); 2093 int (*query_pkey)(struct ib_device *device, 2094 u8 port_num, u16 index, u16 *pkey); 2095 int (*modify_device)(struct ib_device *device, 2096 int device_modify_mask, 2097 struct ib_device_modify *device_modify); 2098 int (*modify_port)(struct ib_device *device, 2099 u8 port_num, int port_modify_mask, 2100 struct ib_port_modify *port_modify); 2101 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device, 2102 struct ib_udata *udata); 2103 int (*dealloc_ucontext)(struct ib_ucontext *context); 2104 int (*mmap)(struct ib_ucontext *context, 2105 struct vm_area_struct *vma); 2106 struct ib_pd * (*alloc_pd)(struct ib_device *device, 2107 struct ib_ucontext *context, 2108 struct ib_udata *udata); 2109 int (*dealloc_pd)(struct ib_pd *pd); 2110 struct ib_ah * (*create_ah)(struct ib_pd *pd, 2111 struct rdma_ah_attr *ah_attr, 2112 struct ib_udata *udata); 2113 int (*modify_ah)(struct ib_ah *ah, 2114 struct rdma_ah_attr *ah_attr); 2115 int (*query_ah)(struct ib_ah *ah, 2116 struct rdma_ah_attr *ah_attr); 2117 int (*destroy_ah)(struct ib_ah *ah); 2118 struct ib_srq * (*create_srq)(struct ib_pd *pd, 2119 struct ib_srq_init_attr *srq_init_attr, 2120 struct ib_udata *udata); 2121 int (*modify_srq)(struct ib_srq *srq, 2122 struct ib_srq_attr *srq_attr, 2123 enum ib_srq_attr_mask srq_attr_mask, 2124 struct ib_udata *udata); 2125 int (*query_srq)(struct ib_srq *srq, 2126 struct ib_srq_attr *srq_attr); 2127 int (*destroy_srq)(struct ib_srq *srq); 2128 int (*post_srq_recv)(struct ib_srq *srq, 2129 struct ib_recv_wr *recv_wr, 2130 struct ib_recv_wr **bad_recv_wr); 2131 struct ib_qp * (*create_qp)(struct ib_pd *pd, 2132 struct ib_qp_init_attr *qp_init_attr, 2133 struct ib_udata *udata); 2134 int (*modify_qp)(struct ib_qp *qp, 2135 struct ib_qp_attr *qp_attr, 2136 int qp_attr_mask, 2137 struct ib_udata *udata); 2138 int (*query_qp)(struct ib_qp *qp, 2139 struct ib_qp_attr *qp_attr, 2140 int qp_attr_mask, 2141 struct ib_qp_init_attr *qp_init_attr); 2142 int (*destroy_qp)(struct ib_qp *qp); 2143 int (*post_send)(struct ib_qp *qp, 2144 struct ib_send_wr *send_wr, 2145 struct ib_send_wr **bad_send_wr); 2146 int (*post_recv)(struct ib_qp *qp, 2147 struct ib_recv_wr *recv_wr, 2148 struct ib_recv_wr **bad_recv_wr); 2149 struct ib_cq * (*create_cq)(struct ib_device *device, 2150 const struct ib_cq_init_attr *attr, 2151 struct ib_ucontext *context, 2152 struct ib_udata *udata); 2153 int (*modify_cq)(struct ib_cq *cq, u16 cq_count, 2154 u16 cq_period); 2155 int (*destroy_cq)(struct ib_cq *cq); 2156 int (*resize_cq)(struct ib_cq *cq, int cqe, 2157 struct ib_udata *udata); 2158 int (*poll_cq)(struct ib_cq *cq, int num_entries, 2159 struct ib_wc *wc); 2160 int (*peek_cq)(struct ib_cq *cq, int wc_cnt); 2161 int (*req_notify_cq)(struct ib_cq *cq, 2162 enum ib_cq_notify_flags flags); 2163 int (*req_ncomp_notif)(struct ib_cq *cq, 2164 int wc_cnt); 2165 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd, 2166 int mr_access_flags); 2167 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd, 2168 u64 start, u64 length, 2169 u64 virt_addr, 2170 int mr_access_flags, 2171 struct ib_udata *udata); 2172 int (*rereg_user_mr)(struct ib_mr *mr, 2173 int flags, 2174 u64 start, u64 length, 2175 u64 virt_addr, 2176 int mr_access_flags, 2177 struct ib_pd *pd, 2178 struct ib_udata *udata); 2179 int (*dereg_mr)(struct ib_mr *mr); 2180 struct ib_mr * (*alloc_mr)(struct ib_pd *pd, 2181 enum ib_mr_type mr_type, 2182 u32 max_num_sg); 2183 int (*map_mr_sg)(struct ib_mr *mr, 2184 struct scatterlist *sg, 2185 int sg_nents, 2186 unsigned int *sg_offset); 2187 struct ib_mw * (*alloc_mw)(struct ib_pd *pd, 2188 enum ib_mw_type type, 2189 struct ib_udata *udata); 2190 int (*dealloc_mw)(struct ib_mw *mw); 2191 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd, 2192 int mr_access_flags, 2193 struct ib_fmr_attr *fmr_attr); 2194 int (*map_phys_fmr)(struct ib_fmr *fmr, 2195 u64 *page_list, int list_len, 2196 u64 iova); 2197 int (*unmap_fmr)(struct list_head *fmr_list); 2198 int (*dealloc_fmr)(struct ib_fmr *fmr); 2199 int (*attach_mcast)(struct ib_qp *qp, 2200 union ib_gid *gid, 2201 u16 lid); 2202 int (*detach_mcast)(struct ib_qp *qp, 2203 union ib_gid *gid, 2204 u16 lid); 2205 int (*process_mad)(struct ib_device *device, 2206 int process_mad_flags, 2207 u8 port_num, 2208 const struct ib_wc *in_wc, 2209 const struct ib_grh *in_grh, 2210 const struct ib_mad_hdr *in_mad, 2211 size_t in_mad_size, 2212 struct ib_mad_hdr *out_mad, 2213 size_t *out_mad_size, 2214 u16 *out_mad_pkey_index); 2215 struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device, 2216 struct ib_ucontext *ucontext, 2217 struct ib_udata *udata); 2218 int (*dealloc_xrcd)(struct ib_xrcd *xrcd); 2219 struct ib_flow * (*create_flow)(struct ib_qp *qp, 2220 struct ib_flow_attr 2221 *flow_attr, 2222 int domain); 2223 int (*destroy_flow)(struct ib_flow *flow_id); 2224 int (*check_mr_status)(struct ib_mr *mr, u32 check_mask, 2225 struct ib_mr_status *mr_status); 2226 void (*disassociate_ucontext)(struct ib_ucontext *ibcontext); 2227 void (*drain_rq)(struct ib_qp *qp); 2228 void (*drain_sq)(struct ib_qp *qp); 2229 int (*set_vf_link_state)(struct ib_device *device, int vf, u8 port, 2230 int state); 2231 int (*get_vf_config)(struct ib_device *device, int vf, u8 port, 2232 struct ifla_vf_info *ivf); 2233 int (*get_vf_stats)(struct ib_device *device, int vf, u8 port, 2234 struct ifla_vf_stats *stats); 2235 int (*set_vf_guid)(struct ib_device *device, int vf, u8 port, u64 guid, 2236 int type); 2237 struct ib_wq * (*create_wq)(struct ib_pd *pd, 2238 struct ib_wq_init_attr *init_attr, 2239 struct ib_udata *udata); 2240 int (*destroy_wq)(struct ib_wq *wq); 2241 int (*modify_wq)(struct ib_wq *wq, 2242 struct ib_wq_attr *attr, 2243 u32 wq_attr_mask, 2244 struct ib_udata *udata); 2245 struct ib_rwq_ind_table * (*create_rwq_ind_table)(struct ib_device *device, 2246 struct ib_rwq_ind_table_init_attr *init_attr, 2247 struct ib_udata *udata); 2248 int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table); 2249 /** 2250 * rdma netdev operation 2251 * 2252 * Driver implementing alloc_rdma_netdev must return -EOPNOTSUPP if it 2253 * doesn't support the specified rdma netdev type. 2254 */ 2255 struct net_device *(*alloc_rdma_netdev)( 2256 struct ib_device *device, 2257 u8 port_num, 2258 enum rdma_netdev_t type, 2259 const char *name, 2260 unsigned char name_assign_type, 2261 void (*setup)(struct net_device *)); 2262 2263 struct module *owner; 2264 struct device dev; 2265 struct kobject *ports_parent; 2266 struct list_head port_list; 2267 2268 enum { 2269 IB_DEV_UNINITIALIZED, 2270 IB_DEV_REGISTERED, 2271 IB_DEV_UNREGISTERED 2272 } reg_state; 2273 2274 int uverbs_abi_ver; 2275 u64 uverbs_cmd_mask; 2276 u64 uverbs_ex_cmd_mask; 2277 2278 char node_desc[IB_DEVICE_NODE_DESC_MAX]; 2279 __be64 node_guid; 2280 u32 local_dma_lkey; 2281 u16 is_switch:1; 2282 u8 node_type; 2283 u8 phys_port_cnt; 2284 struct ib_device_attr attrs; 2285 struct attribute_group *hw_stats_ag; 2286 struct rdma_hw_stats *hw_stats; 2287 2288 #ifdef CONFIG_CGROUP_RDMA 2289 struct rdmacg_device cg_device; 2290 #endif 2291 2292 /** 2293 * The following mandatory functions are used only at device 2294 * registration. Keep functions such as these at the end of this 2295 * structure to avoid cache line misses when accessing struct ib_device 2296 * in fast paths. 2297 */ 2298 int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *); 2299 void (*get_dev_fw_str)(struct ib_device *, char *str, size_t str_len); 2300 }; 2301 2302 struct ib_client { 2303 char *name; 2304 void (*add) (struct ib_device *); 2305 void (*remove)(struct ib_device *, void *client_data); 2306 2307 /* Returns the net_dev belonging to this ib_client and matching the 2308 * given parameters. 2309 * @dev: An RDMA device that the net_dev use for communication. 2310 * @port: A physical port number on the RDMA device. 2311 * @pkey: P_Key that the net_dev uses if applicable. 2312 * @gid: A GID that the net_dev uses to communicate. 2313 * @addr: An IP address the net_dev is configured with. 2314 * @client_data: The device's client data set by ib_set_client_data(). 2315 * 2316 * An ib_client that implements a net_dev on top of RDMA devices 2317 * (such as IP over IB) should implement this callback, allowing the 2318 * rdma_cm module to find the right net_dev for a given request. 2319 * 2320 * The caller is responsible for calling dev_put on the returned 2321 * netdev. */ 2322 struct net_device *(*get_net_dev_by_params)( 2323 struct ib_device *dev, 2324 u8 port, 2325 u16 pkey, 2326 const union ib_gid *gid, 2327 const struct sockaddr *addr, 2328 void *client_data); 2329 struct list_head list; 2330 }; 2331 2332 struct ib_device *ib_alloc_device(size_t size); 2333 void ib_dealloc_device(struct ib_device *device); 2334 2335 void ib_get_device_fw_str(struct ib_device *device, char *str, size_t str_len); 2336 2337 int ib_register_device(struct ib_device *device, 2338 int (*port_callback)(struct ib_device *, 2339 u8, struct kobject *)); 2340 void ib_unregister_device(struct ib_device *device); 2341 2342 int ib_register_client (struct ib_client *client); 2343 void ib_unregister_client(struct ib_client *client); 2344 2345 void *ib_get_client_data(struct ib_device *device, struct ib_client *client); 2346 void ib_set_client_data(struct ib_device *device, struct ib_client *client, 2347 void *data); 2348 2349 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len) 2350 { 2351 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0; 2352 } 2353 2354 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len) 2355 { 2356 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0; 2357 } 2358 2359 static inline bool ib_is_udata_cleared(struct ib_udata *udata, 2360 size_t offset, 2361 size_t len) 2362 { 2363 const void __user *p = udata->inbuf + offset; 2364 bool ret; 2365 u8 *buf; 2366 2367 if (len > USHRT_MAX) 2368 return false; 2369 2370 buf = memdup_user(p, len); 2371 if (IS_ERR(buf)) 2372 return false; 2373 2374 ret = !memchr_inv(buf, 0, len); 2375 kfree(buf); 2376 return ret; 2377 } 2378 2379 /** 2380 * ib_modify_qp_is_ok - Check that the supplied attribute mask 2381 * contains all required attributes and no attributes not allowed for 2382 * the given QP state transition. 2383 * @cur_state: Current QP state 2384 * @next_state: Next QP state 2385 * @type: QP type 2386 * @mask: Mask of supplied QP attributes 2387 * @ll : link layer of port 2388 * 2389 * This function is a helper function that a low-level driver's 2390 * modify_qp method can use to validate the consumer's input. It 2391 * checks that cur_state and next_state are valid QP states, that a 2392 * transition from cur_state to next_state is allowed by the IB spec, 2393 * and that the attribute mask supplied is allowed for the transition. 2394 */ 2395 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, 2396 enum ib_qp_type type, enum ib_qp_attr_mask mask, 2397 enum rdma_link_layer ll); 2398 2399 int ib_register_event_handler (struct ib_event_handler *event_handler); 2400 int ib_unregister_event_handler(struct ib_event_handler *event_handler); 2401 void ib_dispatch_event(struct ib_event *event); 2402 2403 int ib_query_port(struct ib_device *device, 2404 u8 port_num, struct ib_port_attr *port_attr); 2405 2406 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, 2407 u8 port_num); 2408 2409 /** 2410 * rdma_cap_ib_switch - Check if the device is IB switch 2411 * @device: Device to check 2412 * 2413 * Device driver is responsible for setting is_switch bit on 2414 * in ib_device structure at init time. 2415 * 2416 * Return: true if the device is IB switch. 2417 */ 2418 static inline bool rdma_cap_ib_switch(const struct ib_device *device) 2419 { 2420 return device->is_switch; 2421 } 2422 2423 /** 2424 * rdma_start_port - Return the first valid port number for the device 2425 * specified 2426 * 2427 * @device: Device to be checked 2428 * 2429 * Return start port number 2430 */ 2431 static inline u8 rdma_start_port(const struct ib_device *device) 2432 { 2433 return rdma_cap_ib_switch(device) ? 0 : 1; 2434 } 2435 2436 /** 2437 * rdma_end_port - Return the last valid port number for the device 2438 * specified 2439 * 2440 * @device: Device to be checked 2441 * 2442 * Return last port number 2443 */ 2444 static inline u8 rdma_end_port(const struct ib_device *device) 2445 { 2446 return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt; 2447 } 2448 2449 static inline int rdma_is_port_valid(const struct ib_device *device, 2450 unsigned int port) 2451 { 2452 return (port >= rdma_start_port(device) && 2453 port <= rdma_end_port(device)); 2454 } 2455 2456 static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num) 2457 { 2458 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB; 2459 } 2460 2461 static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num) 2462 { 2463 return device->port_immutable[port_num].core_cap_flags & 2464 (RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP); 2465 } 2466 2467 static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, u8 port_num) 2468 { 2469 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP; 2470 } 2471 2472 static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, u8 port_num) 2473 { 2474 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE; 2475 } 2476 2477 static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num) 2478 { 2479 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP; 2480 } 2481 2482 static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num) 2483 { 2484 return rdma_protocol_ib(device, port_num) || 2485 rdma_protocol_roce(device, port_num); 2486 } 2487 2488 static inline bool rdma_protocol_raw_packet(const struct ib_device *device, u8 port_num) 2489 { 2490 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_RAW_PACKET; 2491 } 2492 2493 static inline bool rdma_protocol_usnic(const struct ib_device *device, u8 port_num) 2494 { 2495 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_USNIC; 2496 } 2497 2498 /** 2499 * rdma_cap_ib_mad - Check if the port of a device supports Infiniband 2500 * Management Datagrams. 2501 * @device: Device to check 2502 * @port_num: Port number to check 2503 * 2504 * Management Datagrams (MAD) are a required part of the InfiniBand 2505 * specification and are supported on all InfiniBand devices. A slightly 2506 * extended version are also supported on OPA interfaces. 2507 * 2508 * Return: true if the port supports sending/receiving of MAD packets. 2509 */ 2510 static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num) 2511 { 2512 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_MAD; 2513 } 2514 2515 /** 2516 * rdma_cap_opa_mad - Check if the port of device provides support for OPA 2517 * Management Datagrams. 2518 * @device: Device to check 2519 * @port_num: Port number to check 2520 * 2521 * Intel OmniPath devices extend and/or replace the InfiniBand Management 2522 * datagrams with their own versions. These OPA MADs share many but not all of 2523 * the characteristics of InfiniBand MADs. 2524 * 2525 * OPA MADs differ in the following ways: 2526 * 2527 * 1) MADs are variable size up to 2K 2528 * IBTA defined MADs remain fixed at 256 bytes 2529 * 2) OPA SMPs must carry valid PKeys 2530 * 3) OPA SMP packets are a different format 2531 * 2532 * Return: true if the port supports OPA MAD packet formats. 2533 */ 2534 static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num) 2535 { 2536 return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD) 2537 == RDMA_CORE_CAP_OPA_MAD; 2538 } 2539 2540 /** 2541 * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband 2542 * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI). 2543 * @device: Device to check 2544 * @port_num: Port number to check 2545 * 2546 * Each InfiniBand node is required to provide a Subnet Management Agent 2547 * that the subnet manager can access. Prior to the fabric being fully 2548 * configured by the subnet manager, the SMA is accessed via a well known 2549 * interface called the Subnet Management Interface (SMI). This interface 2550 * uses directed route packets to communicate with the SM to get around the 2551 * chicken and egg problem of the SM needing to know what's on the fabric 2552 * in order to configure the fabric, and needing to configure the fabric in 2553 * order to send packets to the devices on the fabric. These directed 2554 * route packets do not need the fabric fully configured in order to reach 2555 * their destination. The SMI is the only method allowed to send 2556 * directed route packets on an InfiniBand fabric. 2557 * 2558 * Return: true if the port provides an SMI. 2559 */ 2560 static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num) 2561 { 2562 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SMI; 2563 } 2564 2565 /** 2566 * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband 2567 * Communication Manager. 2568 * @device: Device to check 2569 * @port_num: Port number to check 2570 * 2571 * The InfiniBand Communication Manager is one of many pre-defined General 2572 * Service Agents (GSA) that are accessed via the General Service 2573 * Interface (GSI). It's role is to facilitate establishment of connections 2574 * between nodes as well as other management related tasks for established 2575 * connections. 2576 * 2577 * Return: true if the port supports an IB CM (this does not guarantee that 2578 * a CM is actually running however). 2579 */ 2580 static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num) 2581 { 2582 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_CM; 2583 } 2584 2585 /** 2586 * rdma_cap_iw_cm - Check if the port of device has the capability IWARP 2587 * Communication Manager. 2588 * @device: Device to check 2589 * @port_num: Port number to check 2590 * 2591 * Similar to above, but specific to iWARP connections which have a different 2592 * managment protocol than InfiniBand. 2593 * 2594 * Return: true if the port supports an iWARP CM (this does not guarantee that 2595 * a CM is actually running however). 2596 */ 2597 static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num) 2598 { 2599 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IW_CM; 2600 } 2601 2602 /** 2603 * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband 2604 * Subnet Administration. 2605 * @device: Device to check 2606 * @port_num: Port number to check 2607 * 2608 * An InfiniBand Subnet Administration (SA) service is a pre-defined General 2609 * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand 2610 * fabrics, devices should resolve routes to other hosts by contacting the 2611 * SA to query the proper route. 2612 * 2613 * Return: true if the port should act as a client to the fabric Subnet 2614 * Administration interface. This does not imply that the SA service is 2615 * running locally. 2616 */ 2617 static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num) 2618 { 2619 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SA; 2620 } 2621 2622 /** 2623 * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband 2624 * Multicast. 2625 * @device: Device to check 2626 * @port_num: Port number to check 2627 * 2628 * InfiniBand multicast registration is more complex than normal IPv4 or 2629 * IPv6 multicast registration. Each Host Channel Adapter must register 2630 * with the Subnet Manager when it wishes to join a multicast group. It 2631 * should do so only once regardless of how many queue pairs it subscribes 2632 * to this group. And it should leave the group only after all queue pairs 2633 * attached to the group have been detached. 2634 * 2635 * Return: true if the port must undertake the additional adminstrative 2636 * overhead of registering/unregistering with the SM and tracking of the 2637 * total number of queue pairs attached to the multicast group. 2638 */ 2639 static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num) 2640 { 2641 return rdma_cap_ib_sa(device, port_num); 2642 } 2643 2644 /** 2645 * rdma_cap_af_ib - Check if the port of device has the capability 2646 * Native Infiniband Address. 2647 * @device: Device to check 2648 * @port_num: Port number to check 2649 * 2650 * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default 2651 * GID. RoCE uses a different mechanism, but still generates a GID via 2652 * a prescribed mechanism and port specific data. 2653 * 2654 * Return: true if the port uses a GID address to identify devices on the 2655 * network. 2656 */ 2657 static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num) 2658 { 2659 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_AF_IB; 2660 } 2661 2662 /** 2663 * rdma_cap_eth_ah - Check if the port of device has the capability 2664 * Ethernet Address Handle. 2665 * @device: Device to check 2666 * @port_num: Port number to check 2667 * 2668 * RoCE is InfiniBand over Ethernet, and it uses a well defined technique 2669 * to fabricate GIDs over Ethernet/IP specific addresses native to the 2670 * port. Normally, packet headers are generated by the sending host 2671 * adapter, but when sending connectionless datagrams, we must manually 2672 * inject the proper headers for the fabric we are communicating over. 2673 * 2674 * Return: true if we are running as a RoCE port and must force the 2675 * addition of a Global Route Header built from our Ethernet Address 2676 * Handle into our header list for connectionless packets. 2677 */ 2678 static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num) 2679 { 2680 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_AH; 2681 } 2682 2683 /** 2684 * rdma_cap_opa_ah - Check if the port of device supports 2685 * OPA Address handles 2686 * @device: Device to check 2687 * @port_num: Port number to check 2688 * 2689 * Return: true if we are running on an OPA device which supports 2690 * the extended OPA addressing. 2691 */ 2692 static inline bool rdma_cap_opa_ah(struct ib_device *device, u8 port_num) 2693 { 2694 return (device->port_immutable[port_num].core_cap_flags & 2695 RDMA_CORE_CAP_OPA_AH) == RDMA_CORE_CAP_OPA_AH; 2696 } 2697 2698 /** 2699 * rdma_max_mad_size - Return the max MAD size required by this RDMA Port. 2700 * 2701 * @device: Device 2702 * @port_num: Port number 2703 * 2704 * This MAD size includes the MAD headers and MAD payload. No other headers 2705 * are included. 2706 * 2707 * Return the max MAD size required by the Port. Will return 0 if the port 2708 * does not support MADs 2709 */ 2710 static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num) 2711 { 2712 return device->port_immutable[port_num].max_mad_size; 2713 } 2714 2715 /** 2716 * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table 2717 * @device: Device to check 2718 * @port_num: Port number to check 2719 * 2720 * RoCE GID table mechanism manages the various GIDs for a device. 2721 * 2722 * NOTE: if allocating the port's GID table has failed, this call will still 2723 * return true, but any RoCE GID table API will fail. 2724 * 2725 * Return: true if the port uses RoCE GID table mechanism in order to manage 2726 * its GIDs. 2727 */ 2728 static inline bool rdma_cap_roce_gid_table(const struct ib_device *device, 2729 u8 port_num) 2730 { 2731 return rdma_protocol_roce(device, port_num) && 2732 device->add_gid && device->del_gid; 2733 } 2734 2735 /* 2736 * Check if the device supports READ W/ INVALIDATE. 2737 */ 2738 static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num) 2739 { 2740 /* 2741 * iWarp drivers must support READ W/ INVALIDATE. No other protocol 2742 * has support for it yet. 2743 */ 2744 return rdma_protocol_iwarp(dev, port_num); 2745 } 2746 2747 int ib_query_gid(struct ib_device *device, 2748 u8 port_num, int index, union ib_gid *gid, 2749 struct ib_gid_attr *attr); 2750 2751 int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port, 2752 int state); 2753 int ib_get_vf_config(struct ib_device *device, int vf, u8 port, 2754 struct ifla_vf_info *info); 2755 int ib_get_vf_stats(struct ib_device *device, int vf, u8 port, 2756 struct ifla_vf_stats *stats); 2757 int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, 2758 int type); 2759 2760 int ib_query_pkey(struct ib_device *device, 2761 u8 port_num, u16 index, u16 *pkey); 2762 2763 int ib_modify_device(struct ib_device *device, 2764 int device_modify_mask, 2765 struct ib_device_modify *device_modify); 2766 2767 int ib_modify_port(struct ib_device *device, 2768 u8 port_num, int port_modify_mask, 2769 struct ib_port_modify *port_modify); 2770 2771 int ib_find_gid(struct ib_device *device, union ib_gid *gid, 2772 enum ib_gid_type gid_type, struct net_device *ndev, 2773 u8 *port_num, u16 *index); 2774 2775 int ib_find_pkey(struct ib_device *device, 2776 u8 port_num, u16 pkey, u16 *index); 2777 2778 enum ib_pd_flags { 2779 /* 2780 * Create a memory registration for all memory in the system and place 2781 * the rkey for it into pd->unsafe_global_rkey. This can be used by 2782 * ULPs to avoid the overhead of dynamic MRs. 2783 * 2784 * This flag is generally considered unsafe and must only be used in 2785 * extremly trusted environments. Every use of it will log a warning 2786 * in the kernel log. 2787 */ 2788 IB_PD_UNSAFE_GLOBAL_RKEY = 0x01, 2789 }; 2790 2791 struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, 2792 const char *caller); 2793 #define ib_alloc_pd(device, flags) \ 2794 __ib_alloc_pd((device), (flags), __func__) 2795 void ib_dealloc_pd(struct ib_pd *pd); 2796 2797 /** 2798 * rdma_create_ah - Creates an address handle for the given address vector. 2799 * @pd: The protection domain associated with the address handle. 2800 * @ah_attr: The attributes of the address vector. 2801 * 2802 * The address handle is used to reference a local or global destination 2803 * in all UD QP post sends. 2804 */ 2805 struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr); 2806 2807 /** 2808 * ib_get_gids_from_rdma_hdr - Get sgid and dgid from GRH or IPv4 header 2809 * work completion. 2810 * @hdr: the L3 header to parse 2811 * @net_type: type of header to parse 2812 * @sgid: place to store source gid 2813 * @dgid: place to store destination gid 2814 */ 2815 int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, 2816 enum rdma_network_type net_type, 2817 union ib_gid *sgid, union ib_gid *dgid); 2818 2819 /** 2820 * ib_get_rdma_header_version - Get the header version 2821 * @hdr: the L3 header to parse 2822 */ 2823 int ib_get_rdma_header_version(const union rdma_network_hdr *hdr); 2824 2825 /** 2826 * ib_init_ah_from_wc - Initializes address handle attributes from a 2827 * work completion. 2828 * @device: Device on which the received message arrived. 2829 * @port_num: Port on which the received message arrived. 2830 * @wc: Work completion associated with the received message. 2831 * @grh: References the received global route header. This parameter is 2832 * ignored unless the work completion indicates that the GRH is valid. 2833 * @ah_attr: Returned attributes that can be used when creating an address 2834 * handle for replying to the message. 2835 */ 2836 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, 2837 const struct ib_wc *wc, const struct ib_grh *grh, 2838 struct rdma_ah_attr *ah_attr); 2839 2840 /** 2841 * ib_create_ah_from_wc - Creates an address handle associated with the 2842 * sender of the specified work completion. 2843 * @pd: The protection domain associated with the address handle. 2844 * @wc: Work completion information associated with a received message. 2845 * @grh: References the received global route header. This parameter is 2846 * ignored unless the work completion indicates that the GRH is valid. 2847 * @port_num: The outbound port number to associate with the address. 2848 * 2849 * The address handle is used to reference a local or global destination 2850 * in all UD QP post sends. 2851 */ 2852 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, 2853 const struct ib_grh *grh, u8 port_num); 2854 2855 /** 2856 * rdma_modify_ah - Modifies the address vector associated with an address 2857 * handle. 2858 * @ah: The address handle to modify. 2859 * @ah_attr: The new address vector attributes to associate with the 2860 * address handle. 2861 */ 2862 int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); 2863 2864 /** 2865 * rdma_query_ah - Queries the address vector associated with an address 2866 * handle. 2867 * @ah: The address handle to query. 2868 * @ah_attr: The address vector attributes associated with the address 2869 * handle. 2870 */ 2871 int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); 2872 2873 /** 2874 * rdma_destroy_ah - Destroys an address handle. 2875 * @ah: The address handle to destroy. 2876 */ 2877 int rdma_destroy_ah(struct ib_ah *ah); 2878 2879 /** 2880 * ib_create_srq - Creates a SRQ associated with the specified protection 2881 * domain. 2882 * @pd: The protection domain associated with the SRQ. 2883 * @srq_init_attr: A list of initial attributes required to create the 2884 * SRQ. If SRQ creation succeeds, then the attributes are updated to 2885 * the actual capabilities of the created SRQ. 2886 * 2887 * srq_attr->max_wr and srq_attr->max_sge are read the determine the 2888 * requested size of the SRQ, and set to the actual values allocated 2889 * on return. If ib_create_srq() succeeds, then max_wr and max_sge 2890 * will always be at least as large as the requested values. 2891 */ 2892 struct ib_srq *ib_create_srq(struct ib_pd *pd, 2893 struct ib_srq_init_attr *srq_init_attr); 2894 2895 /** 2896 * ib_modify_srq - Modifies the attributes for the specified SRQ. 2897 * @srq: The SRQ to modify. 2898 * @srq_attr: On input, specifies the SRQ attributes to modify. On output, 2899 * the current values of selected SRQ attributes are returned. 2900 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ 2901 * are being modified. 2902 * 2903 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or 2904 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when 2905 * the number of receives queued drops below the limit. 2906 */ 2907 int ib_modify_srq(struct ib_srq *srq, 2908 struct ib_srq_attr *srq_attr, 2909 enum ib_srq_attr_mask srq_attr_mask); 2910 2911 /** 2912 * ib_query_srq - Returns the attribute list and current values for the 2913 * specified SRQ. 2914 * @srq: The SRQ to query. 2915 * @srq_attr: The attributes of the specified SRQ. 2916 */ 2917 int ib_query_srq(struct ib_srq *srq, 2918 struct ib_srq_attr *srq_attr); 2919 2920 /** 2921 * ib_destroy_srq - Destroys the specified SRQ. 2922 * @srq: The SRQ to destroy. 2923 */ 2924 int ib_destroy_srq(struct ib_srq *srq); 2925 2926 /** 2927 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ. 2928 * @srq: The SRQ to post the work request on. 2929 * @recv_wr: A list of work requests to post on the receive queue. 2930 * @bad_recv_wr: On an immediate failure, this parameter will reference 2931 * the work request that failed to be posted on the QP. 2932 */ 2933 static inline int ib_post_srq_recv(struct ib_srq *srq, 2934 struct ib_recv_wr *recv_wr, 2935 struct ib_recv_wr **bad_recv_wr) 2936 { 2937 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr); 2938 } 2939 2940 /** 2941 * ib_create_qp - Creates a QP associated with the specified protection 2942 * domain. 2943 * @pd: The protection domain associated with the QP. 2944 * @qp_init_attr: A list of initial attributes required to create the 2945 * QP. If QP creation succeeds, then the attributes are updated to 2946 * the actual capabilities of the created QP. 2947 */ 2948 struct ib_qp *ib_create_qp(struct ib_pd *pd, 2949 struct ib_qp_init_attr *qp_init_attr); 2950 2951 /** 2952 * ib_modify_qp_with_udata - Modifies the attributes for the specified QP. 2953 * @qp: The QP to modify. 2954 * @attr: On input, specifies the QP attributes to modify. On output, 2955 * the current values of selected QP attributes are returned. 2956 * @attr_mask: A bit-mask used to specify which attributes of the QP 2957 * are being modified. 2958 * @udata: pointer to user's input output buffer information 2959 * are being modified. 2960 * It returns 0 on success and returns appropriate error code on error. 2961 */ 2962 int ib_modify_qp_with_udata(struct ib_qp *qp, 2963 struct ib_qp_attr *attr, 2964 int attr_mask, 2965 struct ib_udata *udata); 2966 2967 /** 2968 * ib_modify_qp - Modifies the attributes for the specified QP and then 2969 * transitions the QP to the given state. 2970 * @qp: The QP to modify. 2971 * @qp_attr: On input, specifies the QP attributes to modify. On output, 2972 * the current values of selected QP attributes are returned. 2973 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP 2974 * are being modified. 2975 */ 2976 int ib_modify_qp(struct ib_qp *qp, 2977 struct ib_qp_attr *qp_attr, 2978 int qp_attr_mask); 2979 2980 /** 2981 * ib_query_qp - Returns the attribute list and current values for the 2982 * specified QP. 2983 * @qp: The QP to query. 2984 * @qp_attr: The attributes of the specified QP. 2985 * @qp_attr_mask: A bit-mask used to select specific attributes to query. 2986 * @qp_init_attr: Additional attributes of the selected QP. 2987 * 2988 * The qp_attr_mask may be used to limit the query to gathering only the 2989 * selected attributes. 2990 */ 2991 int ib_query_qp(struct ib_qp *qp, 2992 struct ib_qp_attr *qp_attr, 2993 int qp_attr_mask, 2994 struct ib_qp_init_attr *qp_init_attr); 2995 2996 /** 2997 * ib_destroy_qp - Destroys the specified QP. 2998 * @qp: The QP to destroy. 2999 */ 3000 int ib_destroy_qp(struct ib_qp *qp); 3001 3002 /** 3003 * ib_open_qp - Obtain a reference to an existing sharable QP. 3004 * @xrcd - XRC domain 3005 * @qp_open_attr: Attributes identifying the QP to open. 3006 * 3007 * Returns a reference to a sharable QP. 3008 */ 3009 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, 3010 struct ib_qp_open_attr *qp_open_attr); 3011 3012 /** 3013 * ib_close_qp - Release an external reference to a QP. 3014 * @qp: The QP handle to release 3015 * 3016 * The opened QP handle is released by the caller. The underlying 3017 * shared QP is not destroyed until all internal references are released. 3018 */ 3019 int ib_close_qp(struct ib_qp *qp); 3020 3021 /** 3022 * ib_post_send - Posts a list of work requests to the send queue of 3023 * the specified QP. 3024 * @qp: The QP to post the work request on. 3025 * @send_wr: A list of work requests to post on the send queue. 3026 * @bad_send_wr: On an immediate failure, this parameter will reference 3027 * the work request that failed to be posted on the QP. 3028 * 3029 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate 3030 * error is returned, the QP state shall not be affected, 3031 * ib_post_send() will return an immediate error after queueing any 3032 * earlier work requests in the list. 3033 */ 3034 static inline int ib_post_send(struct ib_qp *qp, 3035 struct ib_send_wr *send_wr, 3036 struct ib_send_wr **bad_send_wr) 3037 { 3038 return qp->device->post_send(qp, send_wr, bad_send_wr); 3039 } 3040 3041 /** 3042 * ib_post_recv - Posts a list of work requests to the receive queue of 3043 * the specified QP. 3044 * @qp: The QP to post the work request on. 3045 * @recv_wr: A list of work requests to post on the receive queue. 3046 * @bad_recv_wr: On an immediate failure, this parameter will reference 3047 * the work request that failed to be posted on the QP. 3048 */ 3049 static inline int ib_post_recv(struct ib_qp *qp, 3050 struct ib_recv_wr *recv_wr, 3051 struct ib_recv_wr **bad_recv_wr) 3052 { 3053 return qp->device->post_recv(qp, recv_wr, bad_recv_wr); 3054 } 3055 3056 struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private, 3057 int nr_cqe, int comp_vector, enum ib_poll_context poll_ctx); 3058 void ib_free_cq(struct ib_cq *cq); 3059 int ib_process_cq_direct(struct ib_cq *cq, int budget); 3060 3061 /** 3062 * ib_create_cq - Creates a CQ on the specified device. 3063 * @device: The device on which to create the CQ. 3064 * @comp_handler: A user-specified callback that is invoked when a 3065 * completion event occurs on the CQ. 3066 * @event_handler: A user-specified callback that is invoked when an 3067 * asynchronous event not associated with a completion occurs on the CQ. 3068 * @cq_context: Context associated with the CQ returned to the user via 3069 * the associated completion and event handlers. 3070 * @cq_attr: The attributes the CQ should be created upon. 3071 * 3072 * Users can examine the cq structure to determine the actual CQ size. 3073 */ 3074 struct ib_cq *ib_create_cq(struct ib_device *device, 3075 ib_comp_handler comp_handler, 3076 void (*event_handler)(struct ib_event *, void *), 3077 void *cq_context, 3078 const struct ib_cq_init_attr *cq_attr); 3079 3080 /** 3081 * ib_resize_cq - Modifies the capacity of the CQ. 3082 * @cq: The CQ to resize. 3083 * @cqe: The minimum size of the CQ. 3084 * 3085 * Users can examine the cq structure to determine the actual CQ size. 3086 */ 3087 int ib_resize_cq(struct ib_cq *cq, int cqe); 3088 3089 /** 3090 * ib_modify_cq - Modifies moderation params of the CQ 3091 * @cq: The CQ to modify. 3092 * @cq_count: number of CQEs that will trigger an event 3093 * @cq_period: max period of time in usec before triggering an event 3094 * 3095 */ 3096 int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period); 3097 3098 /** 3099 * ib_destroy_cq - Destroys the specified CQ. 3100 * @cq: The CQ to destroy. 3101 */ 3102 int ib_destroy_cq(struct ib_cq *cq); 3103 3104 /** 3105 * ib_poll_cq - poll a CQ for completion(s) 3106 * @cq:the CQ being polled 3107 * @num_entries:maximum number of completions to return 3108 * @wc:array of at least @num_entries &struct ib_wc where completions 3109 * will be returned 3110 * 3111 * Poll a CQ for (possibly multiple) completions. If the return value 3112 * is < 0, an error occurred. If the return value is >= 0, it is the 3113 * number of completions returned. If the return value is 3114 * non-negative and < num_entries, then the CQ was emptied. 3115 */ 3116 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries, 3117 struct ib_wc *wc) 3118 { 3119 return cq->device->poll_cq(cq, num_entries, wc); 3120 } 3121 3122 /** 3123 * ib_peek_cq - Returns the number of unreaped completions currently 3124 * on the specified CQ. 3125 * @cq: The CQ to peek. 3126 * @wc_cnt: A minimum number of unreaped completions to check for. 3127 * 3128 * If the number of unreaped completions is greater than or equal to wc_cnt, 3129 * this function returns wc_cnt, otherwise, it returns the actual number of 3130 * unreaped completions. 3131 */ 3132 int ib_peek_cq(struct ib_cq *cq, int wc_cnt); 3133 3134 /** 3135 * ib_req_notify_cq - Request completion notification on a CQ. 3136 * @cq: The CQ to generate an event for. 3137 * @flags: 3138 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP 3139 * to request an event on the next solicited event or next work 3140 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS 3141 * may also be |ed in to request a hint about missed events, as 3142 * described below. 3143 * 3144 * Return Value: 3145 * < 0 means an error occurred while requesting notification 3146 * == 0 means notification was requested successfully, and if 3147 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events 3148 * were missed and it is safe to wait for another event. In 3149 * this case is it guaranteed that any work completions added 3150 * to the CQ since the last CQ poll will trigger a completion 3151 * notification event. 3152 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed 3153 * in. It means that the consumer must poll the CQ again to 3154 * make sure it is empty to avoid missing an event because of a 3155 * race between requesting notification and an entry being 3156 * added to the CQ. This return value means it is possible 3157 * (but not guaranteed) that a work completion has been added 3158 * to the CQ since the last poll without triggering a 3159 * completion notification event. 3160 */ 3161 static inline int ib_req_notify_cq(struct ib_cq *cq, 3162 enum ib_cq_notify_flags flags) 3163 { 3164 return cq->device->req_notify_cq(cq, flags); 3165 } 3166 3167 /** 3168 * ib_req_ncomp_notif - Request completion notification when there are 3169 * at least the specified number of unreaped completions on the CQ. 3170 * @cq: The CQ to generate an event for. 3171 * @wc_cnt: The number of unreaped completions that should be on the 3172 * CQ before an event is generated. 3173 */ 3174 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt) 3175 { 3176 return cq->device->req_ncomp_notif ? 3177 cq->device->req_ncomp_notif(cq, wc_cnt) : 3178 -ENOSYS; 3179 } 3180 3181 /** 3182 * ib_dma_mapping_error - check a DMA addr for error 3183 * @dev: The device for which the dma_addr was created 3184 * @dma_addr: The DMA address to check 3185 */ 3186 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr) 3187 { 3188 return dma_mapping_error(dev->dma_device, dma_addr); 3189 } 3190 3191 /** 3192 * ib_dma_map_single - Map a kernel virtual address to DMA address 3193 * @dev: The device for which the dma_addr is to be created 3194 * @cpu_addr: The kernel virtual address 3195 * @size: The size of the region in bytes 3196 * @direction: The direction of the DMA 3197 */ 3198 static inline u64 ib_dma_map_single(struct ib_device *dev, 3199 void *cpu_addr, size_t size, 3200 enum dma_data_direction direction) 3201 { 3202 return dma_map_single(dev->dma_device, cpu_addr, size, direction); 3203 } 3204 3205 /** 3206 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single() 3207 * @dev: The device for which the DMA address was created 3208 * @addr: The DMA address 3209 * @size: The size of the region in bytes 3210 * @direction: The direction of the DMA 3211 */ 3212 static inline void ib_dma_unmap_single(struct ib_device *dev, 3213 u64 addr, size_t size, 3214 enum dma_data_direction direction) 3215 { 3216 dma_unmap_single(dev->dma_device, addr, size, direction); 3217 } 3218 3219 /** 3220 * ib_dma_map_page - Map a physical page to DMA address 3221 * @dev: The device for which the dma_addr is to be created 3222 * @page: The page to be mapped 3223 * @offset: The offset within the page 3224 * @size: The size of the region in bytes 3225 * @direction: The direction of the DMA 3226 */ 3227 static inline u64 ib_dma_map_page(struct ib_device *dev, 3228 struct page *page, 3229 unsigned long offset, 3230 size_t size, 3231 enum dma_data_direction direction) 3232 { 3233 return dma_map_page(dev->dma_device, page, offset, size, direction); 3234 } 3235 3236 /** 3237 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page() 3238 * @dev: The device for which the DMA address was created 3239 * @addr: The DMA address 3240 * @size: The size of the region in bytes 3241 * @direction: The direction of the DMA 3242 */ 3243 static inline void ib_dma_unmap_page(struct ib_device *dev, 3244 u64 addr, size_t size, 3245 enum dma_data_direction direction) 3246 { 3247 dma_unmap_page(dev->dma_device, addr, size, direction); 3248 } 3249 3250 /** 3251 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses 3252 * @dev: The device for which the DMA addresses are to be created 3253 * @sg: The array of scatter/gather entries 3254 * @nents: The number of scatter/gather entries 3255 * @direction: The direction of the DMA 3256 */ 3257 static inline int ib_dma_map_sg(struct ib_device *dev, 3258 struct scatterlist *sg, int nents, 3259 enum dma_data_direction direction) 3260 { 3261 return dma_map_sg(dev->dma_device, sg, nents, direction); 3262 } 3263 3264 /** 3265 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses 3266 * @dev: The device for which the DMA addresses were created 3267 * @sg: The array of scatter/gather entries 3268 * @nents: The number of scatter/gather entries 3269 * @direction: The direction of the DMA 3270 */ 3271 static inline void ib_dma_unmap_sg(struct ib_device *dev, 3272 struct scatterlist *sg, int nents, 3273 enum dma_data_direction direction) 3274 { 3275 dma_unmap_sg(dev->dma_device, sg, nents, direction); 3276 } 3277 3278 static inline int ib_dma_map_sg_attrs(struct ib_device *dev, 3279 struct scatterlist *sg, int nents, 3280 enum dma_data_direction direction, 3281 unsigned long dma_attrs) 3282 { 3283 return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, 3284 dma_attrs); 3285 } 3286 3287 static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev, 3288 struct scatterlist *sg, int nents, 3289 enum dma_data_direction direction, 3290 unsigned long dma_attrs) 3291 { 3292 dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, dma_attrs); 3293 } 3294 /** 3295 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry 3296 * @dev: The device for which the DMA addresses were created 3297 * @sg: The scatter/gather entry 3298 * 3299 * Note: this function is obsolete. To do: change all occurrences of 3300 * ib_sg_dma_address() into sg_dma_address(). 3301 */ 3302 static inline u64 ib_sg_dma_address(struct ib_device *dev, 3303 struct scatterlist *sg) 3304 { 3305 return sg_dma_address(sg); 3306 } 3307 3308 /** 3309 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry 3310 * @dev: The device for which the DMA addresses were created 3311 * @sg: The scatter/gather entry 3312 * 3313 * Note: this function is obsolete. To do: change all occurrences of 3314 * ib_sg_dma_len() into sg_dma_len(). 3315 */ 3316 static inline unsigned int ib_sg_dma_len(struct ib_device *dev, 3317 struct scatterlist *sg) 3318 { 3319 return sg_dma_len(sg); 3320 } 3321 3322 /** 3323 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU 3324 * @dev: The device for which the DMA address was created 3325 * @addr: The DMA address 3326 * @size: The size of the region in bytes 3327 * @dir: The direction of the DMA 3328 */ 3329 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev, 3330 u64 addr, 3331 size_t size, 3332 enum dma_data_direction dir) 3333 { 3334 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir); 3335 } 3336 3337 /** 3338 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device 3339 * @dev: The device for which the DMA address was created 3340 * @addr: The DMA address 3341 * @size: The size of the region in bytes 3342 * @dir: The direction of the DMA 3343 */ 3344 static inline void ib_dma_sync_single_for_device(struct ib_device *dev, 3345 u64 addr, 3346 size_t size, 3347 enum dma_data_direction dir) 3348 { 3349 dma_sync_single_for_device(dev->dma_device, addr, size, dir); 3350 } 3351 3352 /** 3353 * ib_dma_alloc_coherent - Allocate memory and map it for DMA 3354 * @dev: The device for which the DMA address is requested 3355 * @size: The size of the region to allocate in bytes 3356 * @dma_handle: A pointer for returning the DMA address of the region 3357 * @flag: memory allocator flags 3358 */ 3359 static inline void *ib_dma_alloc_coherent(struct ib_device *dev, 3360 size_t size, 3361 dma_addr_t *dma_handle, 3362 gfp_t flag) 3363 { 3364 return dma_alloc_coherent(dev->dma_device, size, dma_handle, flag); 3365 } 3366 3367 /** 3368 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent() 3369 * @dev: The device for which the DMA addresses were allocated 3370 * @size: The size of the region 3371 * @cpu_addr: the address returned by ib_dma_alloc_coherent() 3372 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent() 3373 */ 3374 static inline void ib_dma_free_coherent(struct ib_device *dev, 3375 size_t size, void *cpu_addr, 3376 dma_addr_t dma_handle) 3377 { 3378 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle); 3379 } 3380 3381 /** 3382 * ib_dereg_mr - Deregisters a memory region and removes it from the 3383 * HCA translation table. 3384 * @mr: The memory region to deregister. 3385 * 3386 * This function can fail, if the memory region has memory windows bound to it. 3387 */ 3388 int ib_dereg_mr(struct ib_mr *mr); 3389 3390 struct ib_mr *ib_alloc_mr(struct ib_pd *pd, 3391 enum ib_mr_type mr_type, 3392 u32 max_num_sg); 3393 3394 /** 3395 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR 3396 * R_Key and L_Key. 3397 * @mr - struct ib_mr pointer to be updated. 3398 * @newkey - new key to be used. 3399 */ 3400 static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey) 3401 { 3402 mr->lkey = (mr->lkey & 0xffffff00) | newkey; 3403 mr->rkey = (mr->rkey & 0xffffff00) | newkey; 3404 } 3405 3406 /** 3407 * ib_inc_rkey - increments the key portion of the given rkey. Can be used 3408 * for calculating a new rkey for type 2 memory windows. 3409 * @rkey - the rkey to increment. 3410 */ 3411 static inline u32 ib_inc_rkey(u32 rkey) 3412 { 3413 const u32 mask = 0x000000ff; 3414 return ((rkey + 1) & mask) | (rkey & ~mask); 3415 } 3416 3417 /** 3418 * ib_alloc_fmr - Allocates a unmapped fast memory region. 3419 * @pd: The protection domain associated with the unmapped region. 3420 * @mr_access_flags: Specifies the memory access rights. 3421 * @fmr_attr: Attributes of the unmapped region. 3422 * 3423 * A fast memory region must be mapped before it can be used as part of 3424 * a work request. 3425 */ 3426 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, 3427 int mr_access_flags, 3428 struct ib_fmr_attr *fmr_attr); 3429 3430 /** 3431 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region. 3432 * @fmr: The fast memory region to associate with the pages. 3433 * @page_list: An array of physical pages to map to the fast memory region. 3434 * @list_len: The number of pages in page_list. 3435 * @iova: The I/O virtual address to use with the mapped region. 3436 */ 3437 static inline int ib_map_phys_fmr(struct ib_fmr *fmr, 3438 u64 *page_list, int list_len, 3439 u64 iova) 3440 { 3441 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova); 3442 } 3443 3444 /** 3445 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions. 3446 * @fmr_list: A linked list of fast memory regions to unmap. 3447 */ 3448 int ib_unmap_fmr(struct list_head *fmr_list); 3449 3450 /** 3451 * ib_dealloc_fmr - Deallocates a fast memory region. 3452 * @fmr: The fast memory region to deallocate. 3453 */ 3454 int ib_dealloc_fmr(struct ib_fmr *fmr); 3455 3456 /** 3457 * ib_attach_mcast - Attaches the specified QP to a multicast group. 3458 * @qp: QP to attach to the multicast group. The QP must be type 3459 * IB_QPT_UD. 3460 * @gid: Multicast group GID. 3461 * @lid: Multicast group LID in host byte order. 3462 * 3463 * In order to send and receive multicast packets, subnet 3464 * administration must have created the multicast group and configured 3465 * the fabric appropriately. The port associated with the specified 3466 * QP must also be a member of the multicast group. 3467 */ 3468 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); 3469 3470 /** 3471 * ib_detach_mcast - Detaches the specified QP from a multicast group. 3472 * @qp: QP to detach from the multicast group. 3473 * @gid: Multicast group GID. 3474 * @lid: Multicast group LID in host byte order. 3475 */ 3476 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); 3477 3478 /** 3479 * ib_alloc_xrcd - Allocates an XRC domain. 3480 * @device: The device on which to allocate the XRC domain. 3481 */ 3482 struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device); 3483 3484 /** 3485 * ib_dealloc_xrcd - Deallocates an XRC domain. 3486 * @xrcd: The XRC domain to deallocate. 3487 */ 3488 int ib_dealloc_xrcd(struct ib_xrcd *xrcd); 3489 3490 struct ib_flow *ib_create_flow(struct ib_qp *qp, 3491 struct ib_flow_attr *flow_attr, int domain); 3492 int ib_destroy_flow(struct ib_flow *flow_id); 3493 3494 static inline int ib_check_mr_access(int flags) 3495 { 3496 /* 3497 * Local write permission is required if remote write or 3498 * remote atomic permission is also requested. 3499 */ 3500 if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && 3501 !(flags & IB_ACCESS_LOCAL_WRITE)) 3502 return -EINVAL; 3503 3504 return 0; 3505 } 3506 3507 /** 3508 * ib_check_mr_status: lightweight check of MR status. 3509 * This routine may provide status checks on a selected 3510 * ib_mr. first use is for signature status check. 3511 * 3512 * @mr: A memory region. 3513 * @check_mask: Bitmask of which checks to perform from 3514 * ib_mr_status_check enumeration. 3515 * @mr_status: The container of relevant status checks. 3516 * failed checks will be indicated in the status bitmask 3517 * and the relevant info shall be in the error item. 3518 */ 3519 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, 3520 struct ib_mr_status *mr_status); 3521 3522 struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port, 3523 u16 pkey, const union ib_gid *gid, 3524 const struct sockaddr *addr); 3525 struct ib_wq *ib_create_wq(struct ib_pd *pd, 3526 struct ib_wq_init_attr *init_attr); 3527 int ib_destroy_wq(struct ib_wq *wq); 3528 int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *attr, 3529 u32 wq_attr_mask); 3530 struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device, 3531 struct ib_rwq_ind_table_init_attr* 3532 wq_ind_table_init_attr); 3533 int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table); 3534 3535 int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, 3536 unsigned int *sg_offset, unsigned int page_size); 3537 3538 static inline int 3539 ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, 3540 unsigned int *sg_offset, unsigned int page_size) 3541 { 3542 int n; 3543 3544 n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size); 3545 mr->iova = 0; 3546 3547 return n; 3548 } 3549 3550 int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, 3551 unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64)); 3552 3553 void ib_drain_rq(struct ib_qp *qp); 3554 void ib_drain_sq(struct ib_qp *qp); 3555 void ib_drain_qp(struct ib_qp *qp); 3556 3557 int ib_resolve_eth_dmac(struct ib_device *device, 3558 struct rdma_ah_attr *ah_attr); 3559 3560 static inline u8 *rdma_ah_retrieve_dmac(struct rdma_ah_attr *attr) 3561 { 3562 if (attr->type == RDMA_AH_ATTR_TYPE_ROCE) 3563 return attr->roce.dmac; 3564 return NULL; 3565 } 3566 3567 static inline void rdma_ah_set_dlid(struct rdma_ah_attr *attr, u32 dlid) 3568 { 3569 if (attr->type == RDMA_AH_ATTR_TYPE_IB) 3570 attr->ib.dlid = (u16)dlid; 3571 else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) 3572 attr->opa.dlid = dlid; 3573 } 3574 3575 static inline u32 rdma_ah_get_dlid(const struct rdma_ah_attr *attr) 3576 { 3577 if (attr->type == RDMA_AH_ATTR_TYPE_IB) 3578 return attr->ib.dlid; 3579 else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) 3580 return attr->opa.dlid; 3581 return 0; 3582 } 3583 3584 static inline void rdma_ah_set_sl(struct rdma_ah_attr *attr, u8 sl) 3585 { 3586 attr->sl = sl; 3587 } 3588 3589 static inline u8 rdma_ah_get_sl(const struct rdma_ah_attr *attr) 3590 { 3591 return attr->sl; 3592 } 3593 3594 static inline void rdma_ah_set_path_bits(struct rdma_ah_attr *attr, 3595 u8 src_path_bits) 3596 { 3597 if (attr->type == RDMA_AH_ATTR_TYPE_IB) 3598 attr->ib.src_path_bits = src_path_bits; 3599 else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) 3600 attr->opa.src_path_bits = src_path_bits; 3601 } 3602 3603 static inline u8 rdma_ah_get_path_bits(const struct rdma_ah_attr *attr) 3604 { 3605 if (attr->type == RDMA_AH_ATTR_TYPE_IB) 3606 return attr->ib.src_path_bits; 3607 else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) 3608 return attr->opa.src_path_bits; 3609 return 0; 3610 } 3611 3612 static inline void rdma_ah_set_port_num(struct rdma_ah_attr *attr, u8 port_num) 3613 { 3614 attr->port_num = port_num; 3615 } 3616 3617 static inline u8 rdma_ah_get_port_num(const struct rdma_ah_attr *attr) 3618 { 3619 return attr->port_num; 3620 } 3621 3622 static inline void rdma_ah_set_static_rate(struct rdma_ah_attr *attr, 3623 u8 static_rate) 3624 { 3625 attr->static_rate = static_rate; 3626 } 3627 3628 static inline u8 rdma_ah_get_static_rate(const struct rdma_ah_attr *attr) 3629 { 3630 return attr->static_rate; 3631 } 3632 3633 static inline void rdma_ah_set_ah_flags(struct rdma_ah_attr *attr, 3634 enum ib_ah_flags flag) 3635 { 3636 attr->ah_flags = flag; 3637 } 3638 3639 static inline enum ib_ah_flags 3640 rdma_ah_get_ah_flags(const struct rdma_ah_attr *attr) 3641 { 3642 return attr->ah_flags; 3643 } 3644 3645 static inline const struct ib_global_route 3646 *rdma_ah_read_grh(const struct rdma_ah_attr *attr) 3647 { 3648 return &attr->grh; 3649 } 3650 3651 /*To retrieve and modify the grh */ 3652 static inline struct ib_global_route 3653 *rdma_ah_retrieve_grh(struct rdma_ah_attr *attr) 3654 { 3655 return &attr->grh; 3656 } 3657 3658 static inline void rdma_ah_set_dgid_raw(struct rdma_ah_attr *attr, void *dgid) 3659 { 3660 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); 3661 3662 memcpy(grh->dgid.raw, dgid, sizeof(grh->dgid)); 3663 } 3664 3665 static inline void rdma_ah_set_subnet_prefix(struct rdma_ah_attr *attr, 3666 __be64 prefix) 3667 { 3668 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); 3669 3670 grh->dgid.global.subnet_prefix = prefix; 3671 } 3672 3673 static inline void rdma_ah_set_interface_id(struct rdma_ah_attr *attr, 3674 __be64 if_id) 3675 { 3676 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); 3677 3678 grh->dgid.global.interface_id = if_id; 3679 } 3680 3681 static inline void rdma_ah_set_grh(struct rdma_ah_attr *attr, 3682 union ib_gid *dgid, u32 flow_label, 3683 u8 sgid_index, u8 hop_limit, 3684 u8 traffic_class) 3685 { 3686 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); 3687 3688 attr->ah_flags = IB_AH_GRH; 3689 if (dgid) 3690 grh->dgid = *dgid; 3691 grh->flow_label = flow_label; 3692 grh->sgid_index = sgid_index; 3693 grh->hop_limit = hop_limit; 3694 grh->traffic_class = traffic_class; 3695 } 3696 3697 /*Get AH type */ 3698 static inline enum rdma_ah_attr_type rdma_ah_find_type(struct ib_device *dev, 3699 u32 port_num) 3700 { 3701 if ((rdma_protocol_roce(dev, port_num)) || 3702 (rdma_protocol_iwarp(dev, port_num))) 3703 return RDMA_AH_ATTR_TYPE_ROCE; 3704 else if ((rdma_protocol_ib(dev, port_num)) && 3705 (rdma_cap_opa_ah(dev, port_num))) 3706 return RDMA_AH_ATTR_TYPE_OPA; 3707 else 3708 return RDMA_AH_ATTR_TYPE_IB; 3709 } 3710 #endif /* IB_VERBS_H */ 3711