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.
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:
16 * Redistribution and use in source and binary forms, with or
17 * without modification, are permitted provided that the following
20 * - Redistributions of source code must retain the above
21 * copyright notice, this list of conditions and the following
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.
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
39 #if !defined(IB_VERBS_H)
42 #include <linux/types.h>
43 #include <linux/device.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>
56 #include <linux/string.h>
57 #include <linux/slab.h>
59 #include <linux/if_link.h>
60 #include <linux/atomic.h>
61 #include <linux/mmu_notifier.h>
62 #include <asm/uaccess.h>
64 extern struct workqueue_struct *ib_wq;
65 extern struct workqueue_struct *ib_comp_wq;
75 extern union ib_gid zgid;
78 /* If link layer is Ethernet, this is RoCE V1 */
81 IB_GID_TYPE_ROCE_UDP_ENCAP = 1,
85 #define ROCE_V2_UDP_DPORT 4791
87 enum ib_gid_type gid_type;
88 struct net_device *ndev;
92 /* IB values map to NodeInfo:NodeType. */
102 /* set the local administered indication */
103 IB_SA_WELL_KNOWN_GUID = BIT_ULL(57) | 2,
106 enum rdma_transport_type {
108 RDMA_TRANSPORT_IWARP,
109 RDMA_TRANSPORT_USNIC,
110 RDMA_TRANSPORT_USNIC_UDP
113 enum rdma_protocol_type {
117 RDMA_PROTOCOL_USNIC_UDP
120 __attribute_const__ enum rdma_transport_type
121 rdma_node_get_transport(enum rdma_node_type node_type);
123 enum rdma_network_type {
125 RDMA_NETWORK_ROCE_V1 = RDMA_NETWORK_IB,
130 static inline enum ib_gid_type ib_network_to_gid_type(enum rdma_network_type network_type)
132 if (network_type == RDMA_NETWORK_IPV4 ||
133 network_type == RDMA_NETWORK_IPV6)
134 return IB_GID_TYPE_ROCE_UDP_ENCAP;
136 /* IB_GID_TYPE_IB same as RDMA_NETWORK_ROCE_V1 */
137 return IB_GID_TYPE_IB;
140 static inline enum rdma_network_type ib_gid_to_network_type(enum ib_gid_type gid_type,
143 if (gid_type == IB_GID_TYPE_IB)
144 return RDMA_NETWORK_IB;
146 if (ipv6_addr_v4mapped((struct in6_addr *)gid))
147 return RDMA_NETWORK_IPV4;
149 return RDMA_NETWORK_IPV6;
152 enum rdma_link_layer {
153 IB_LINK_LAYER_UNSPECIFIED,
154 IB_LINK_LAYER_INFINIBAND,
155 IB_LINK_LAYER_ETHERNET,
158 enum ib_device_cap_flags {
159 IB_DEVICE_RESIZE_MAX_WR = (1 << 0),
160 IB_DEVICE_BAD_PKEY_CNTR = (1 << 1),
161 IB_DEVICE_BAD_QKEY_CNTR = (1 << 2),
162 IB_DEVICE_RAW_MULTI = (1 << 3),
163 IB_DEVICE_AUTO_PATH_MIG = (1 << 4),
164 IB_DEVICE_CHANGE_PHY_PORT = (1 << 5),
165 IB_DEVICE_UD_AV_PORT_ENFORCE = (1 << 6),
166 IB_DEVICE_CURR_QP_STATE_MOD = (1 << 7),
167 IB_DEVICE_SHUTDOWN_PORT = (1 << 8),
168 IB_DEVICE_INIT_TYPE = (1 << 9),
169 IB_DEVICE_PORT_ACTIVE_EVENT = (1 << 10),
170 IB_DEVICE_SYS_IMAGE_GUID = (1 << 11),
171 IB_DEVICE_RC_RNR_NAK_GEN = (1 << 12),
172 IB_DEVICE_SRQ_RESIZE = (1 << 13),
173 IB_DEVICE_N_NOTIFY_CQ = (1 << 14),
176 * This device supports a per-device lkey or stag that can be
177 * used without performing a memory registration for the local
178 * memory. Note that ULPs should never check this flag, but
179 * instead of use the local_dma_lkey flag in the ib_pd structure,
180 * which will always contain a usable lkey.
182 IB_DEVICE_LOCAL_DMA_LKEY = (1 << 15),
183 IB_DEVICE_RESERVED /* old SEND_W_INV */ = (1 << 16),
184 IB_DEVICE_MEM_WINDOW = (1 << 17),
186 * Devices should set IB_DEVICE_UD_IP_SUM if they support
187 * insertion of UDP and TCP checksum on outgoing UD IPoIB
188 * messages and can verify the validity of checksum for
189 * incoming messages. Setting this flag implies that the
190 * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
192 IB_DEVICE_UD_IP_CSUM = (1 << 18),
193 IB_DEVICE_UD_TSO = (1 << 19),
194 IB_DEVICE_XRC = (1 << 20),
197 * This device supports the IB "base memory management extension",
198 * which includes support for fast registrations (IB_WR_REG_MR,
199 * IB_WR_LOCAL_INV and IB_WR_SEND_WITH_INV verbs). This flag should
200 * also be set by any iWarp device which must support FRs to comply
201 * to the iWarp verbs spec. iWarp devices also support the
202 * IB_WR_RDMA_READ_WITH_INV verb for RDMA READs that invalidate the
205 IB_DEVICE_MEM_MGT_EXTENSIONS = (1 << 21),
206 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1 << 22),
207 IB_DEVICE_MEM_WINDOW_TYPE_2A = (1 << 23),
208 IB_DEVICE_MEM_WINDOW_TYPE_2B = (1 << 24),
209 IB_DEVICE_RC_IP_CSUM = (1 << 25),
210 IB_DEVICE_RAW_IP_CSUM = (1 << 26),
212 * Devices should set IB_DEVICE_CROSS_CHANNEL if they
213 * support execution of WQEs that involve synchronization
214 * of I/O operations with single completion queue managed
217 IB_DEVICE_CROSS_CHANNEL = (1 << 27),
218 IB_DEVICE_MANAGED_FLOW_STEERING = (1 << 29),
219 IB_DEVICE_SIGNATURE_HANDOVER = (1 << 30),
220 IB_DEVICE_ON_DEMAND_PAGING = (1ULL << 31),
221 IB_DEVICE_SG_GAPS_REG = (1ULL << 32),
222 IB_DEVICE_VIRTUAL_FUNCTION = (1ULL << 33),
223 IB_DEVICE_RAW_SCATTER_FCS = (1ULL << 34),
226 enum ib_signature_prot_cap {
227 IB_PROT_T10DIF_TYPE_1 = 1,
228 IB_PROT_T10DIF_TYPE_2 = 1 << 1,
229 IB_PROT_T10DIF_TYPE_3 = 1 << 2,
232 enum ib_signature_guard_cap {
233 IB_GUARD_T10DIF_CRC = 1,
234 IB_GUARD_T10DIF_CSUM = 1 << 1,
243 enum ib_odp_general_cap_bits {
244 IB_ODP_SUPPORT = 1 << 0,
247 enum ib_odp_transport_cap_bits {
248 IB_ODP_SUPPORT_SEND = 1 << 0,
249 IB_ODP_SUPPORT_RECV = 1 << 1,
250 IB_ODP_SUPPORT_WRITE = 1 << 2,
251 IB_ODP_SUPPORT_READ = 1 << 3,
252 IB_ODP_SUPPORT_ATOMIC = 1 << 4,
256 uint64_t general_caps;
258 uint32_t rc_odp_caps;
259 uint32_t uc_odp_caps;
260 uint32_t ud_odp_caps;
261 } per_transport_caps;
264 enum ib_cq_creation_flags {
265 IB_CQ_FLAGS_TIMESTAMP_COMPLETION = 1 << 0,
266 IB_CQ_FLAGS_IGNORE_OVERRUN = 1 << 1,
269 struct ib_cq_init_attr {
275 struct ib_device_attr {
277 __be64 sys_image_guid;
285 u64 device_cap_flags;
295 int max_qp_init_rd_atom;
296 int max_ee_init_rd_atom;
297 enum ib_atomic_cap atomic_cap;
298 enum ib_atomic_cap masked_atomic_cap;
305 int max_mcast_qp_attach;
306 int max_total_mcast_qp_attach;
313 unsigned int max_fast_reg_page_list_len;
315 u8 local_ca_ack_delay;
318 struct ib_odp_caps odp_caps;
319 uint64_t timestamp_mask;
320 uint64_t hca_core_clock; /* in KHZ */
331 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
334 case IB_MTU_256: return 256;
335 case IB_MTU_512: return 512;
336 case IB_MTU_1024: return 1024;
337 case IB_MTU_2048: return 2048;
338 case IB_MTU_4096: return 4096;
349 IB_PORT_ACTIVE_DEFER = 5
352 enum ib_port_cap_flags {
354 IB_PORT_NOTICE_SUP = 1 << 2,
355 IB_PORT_TRAP_SUP = 1 << 3,
356 IB_PORT_OPT_IPD_SUP = 1 << 4,
357 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
358 IB_PORT_SL_MAP_SUP = 1 << 6,
359 IB_PORT_MKEY_NVRAM = 1 << 7,
360 IB_PORT_PKEY_NVRAM = 1 << 8,
361 IB_PORT_LED_INFO_SUP = 1 << 9,
362 IB_PORT_SM_DISABLED = 1 << 10,
363 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
364 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
365 IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14,
366 IB_PORT_CM_SUP = 1 << 16,
367 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
368 IB_PORT_REINIT_SUP = 1 << 18,
369 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
370 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
371 IB_PORT_DR_NOTICE_SUP = 1 << 21,
372 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
373 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
374 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
375 IB_PORT_CLIENT_REG_SUP = 1 << 25,
376 IB_PORT_IP_BASED_GIDS = 1 << 26,
386 static inline int ib_width_enum_to_int(enum ib_port_width width)
389 case IB_WIDTH_1X: return 1;
390 case IB_WIDTH_4X: return 4;
391 case IB_WIDTH_8X: return 8;
392 case IB_WIDTH_12X: return 12;
407 * struct rdma_hw_stats
408 * @timestamp - Used by the core code to track when the last update was
409 * @lifespan - Used by the core code to determine how old the counters
410 * should be before being updated again. Stored in jiffies, defaults
411 * to 10 milliseconds, drivers can override the default be specifying
412 * their own value during their allocation routine.
413 * @name - Array of pointers to static names used for the counters in
415 * @num_counters - How many hardware counters there are. If name is
416 * shorter than this number, a kernel oops will result. Driver authors
417 * are encouraged to leave BUILD_BUG_ON(ARRAY_SIZE(@name) < num_counters)
418 * in their code to prevent this.
419 * @value - Array of u64 counters that are accessed by the sysfs code and
420 * filled in by the drivers get_stats routine
422 struct rdma_hw_stats {
423 unsigned long timestamp;
424 unsigned long lifespan;
425 const char * const *names;
430 #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10
432 * rdma_alloc_hw_stats_struct - Helper function to allocate dynamic struct
434 * @names - Array of static const char *
435 * @num_counters - How many elements in array
436 * @lifespan - How many milliseconds between updates
438 static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct(
439 const char * const *names, int num_counters,
440 unsigned long lifespan)
442 struct rdma_hw_stats *stats;
444 stats = kzalloc(sizeof(*stats) + num_counters * sizeof(u64),
448 stats->names = names;
449 stats->num_counters = num_counters;
450 stats->lifespan = msecs_to_jiffies(lifespan);
456 /* Define bits for the various functionality this port needs to be supported by
459 /* Management 0x00000FFF */
460 #define RDMA_CORE_CAP_IB_MAD 0x00000001
461 #define RDMA_CORE_CAP_IB_SMI 0x00000002
462 #define RDMA_CORE_CAP_IB_CM 0x00000004
463 #define RDMA_CORE_CAP_IW_CM 0x00000008
464 #define RDMA_CORE_CAP_IB_SA 0x00000010
465 #define RDMA_CORE_CAP_OPA_MAD 0x00000020
467 /* Address format 0x000FF000 */
468 #define RDMA_CORE_CAP_AF_IB 0x00001000
469 #define RDMA_CORE_CAP_ETH_AH 0x00002000
471 /* Protocol 0xFFF00000 */
472 #define RDMA_CORE_CAP_PROT_IB 0x00100000
473 #define RDMA_CORE_CAP_PROT_ROCE 0x00200000
474 #define RDMA_CORE_CAP_PROT_IWARP 0x00400000
475 #define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000
477 #define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \
478 | RDMA_CORE_CAP_IB_MAD \
479 | RDMA_CORE_CAP_IB_SMI \
480 | RDMA_CORE_CAP_IB_CM \
481 | RDMA_CORE_CAP_IB_SA \
482 | RDMA_CORE_CAP_AF_IB)
483 #define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \
484 | RDMA_CORE_CAP_IB_MAD \
485 | RDMA_CORE_CAP_IB_CM \
486 | RDMA_CORE_CAP_AF_IB \
487 | RDMA_CORE_CAP_ETH_AH)
488 #define RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP \
489 (RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP \
490 | RDMA_CORE_CAP_IB_MAD \
491 | RDMA_CORE_CAP_IB_CM \
492 | RDMA_CORE_CAP_AF_IB \
493 | RDMA_CORE_CAP_ETH_AH)
494 #define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \
495 | RDMA_CORE_CAP_IW_CM)
496 #define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \
497 | RDMA_CORE_CAP_OPA_MAD)
499 struct ib_port_attr {
501 enum ib_port_state state;
503 enum ib_mtu active_mtu;
523 enum ib_device_modify_flags {
524 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
525 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
528 struct ib_device_modify {
533 enum ib_port_modify_flags {
534 IB_PORT_SHUTDOWN = 1,
535 IB_PORT_INIT_TYPE = (1<<2),
536 IB_PORT_RESET_QKEY_CNTR = (1<<3)
539 struct ib_port_modify {
540 u32 set_port_cap_mask;
541 u32 clr_port_cap_mask;
549 IB_EVENT_QP_ACCESS_ERR,
553 IB_EVENT_PATH_MIG_ERR,
554 IB_EVENT_DEVICE_FATAL,
555 IB_EVENT_PORT_ACTIVE,
558 IB_EVENT_PKEY_CHANGE,
561 IB_EVENT_SRQ_LIMIT_REACHED,
562 IB_EVENT_QP_LAST_WQE_REACHED,
563 IB_EVENT_CLIENT_REREGISTER,
567 const char *__attribute_const__ ib_event_msg(enum ib_event_type event);
570 struct ib_device *device;
577 enum ib_event_type event;
580 struct ib_event_handler {
581 struct ib_device *device;
582 void (*handler)(struct ib_event_handler *, struct ib_event *);
583 struct list_head list;
586 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
588 (_ptr)->device = _device; \
589 (_ptr)->handler = _handler; \
590 INIT_LIST_HEAD(&(_ptr)->list); \
593 struct ib_global_route {
602 __be32 version_tclass_flow;
610 union rdma_network_hdr {
613 /* The IB spec states that if it's IPv4, the header
614 * is located in the last 20 bytes of the header.
617 struct iphdr roce4grh;
622 IB_MULTICAST_QPN = 0xffffff
625 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
626 #define IB_MULTICAST_LID_BASE cpu_to_be16(0xC000)
633 IB_RATE_PORT_CURRENT = 0,
634 IB_RATE_2_5_GBPS = 2,
642 IB_RATE_120_GBPS = 10,
643 IB_RATE_14_GBPS = 11,
644 IB_RATE_56_GBPS = 12,
645 IB_RATE_112_GBPS = 13,
646 IB_RATE_168_GBPS = 14,
647 IB_RATE_25_GBPS = 15,
648 IB_RATE_100_GBPS = 16,
649 IB_RATE_200_GBPS = 17,
650 IB_RATE_300_GBPS = 18
654 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
655 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
656 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
657 * @rate: rate to convert.
659 __attribute_const__ int ib_rate_to_mult(enum ib_rate rate);
662 * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
663 * For example, IB_RATE_2_5_GBPS will be converted to 2500.
664 * @rate: rate to convert.
666 __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate);
670 * enum ib_mr_type - memory region type
671 * @IB_MR_TYPE_MEM_REG: memory region that is used for
672 * normal registration
673 * @IB_MR_TYPE_SIGNATURE: memory region that is used for
674 * signature operations (data-integrity
676 * @IB_MR_TYPE_SG_GAPS: memory region that is capable to
677 * register any arbitrary sg lists (without
678 * the normal mr constraints - see
683 IB_MR_TYPE_SIGNATURE,
689 * IB_SIG_TYPE_NONE: Unprotected.
690 * IB_SIG_TYPE_T10_DIF: Type T10-DIF
692 enum ib_signature_type {
698 * Signature T10-DIF block-guard types
699 * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules.
700 * IB_T10DIF_CSUM: Corresponds to IP checksum rules.
702 enum ib_t10_dif_bg_type {
708 * struct ib_t10_dif_domain - Parameters specific for T10-DIF
710 * @bg_type: T10-DIF block guard type (CRC|CSUM)
711 * @pi_interval: protection information interval.
712 * @bg: seed of guard computation.
713 * @app_tag: application tag of guard block
714 * @ref_tag: initial guard block reference tag.
715 * @ref_remap: Indicate wethear the reftag increments each block
716 * @app_escape: Indicate to skip block check if apptag=0xffff
717 * @ref_escape: Indicate to skip block check if reftag=0xffffffff
718 * @apptag_check_mask: check bitmask of application tag.
720 struct ib_t10_dif_domain {
721 enum ib_t10_dif_bg_type bg_type;
729 u16 apptag_check_mask;
733 * struct ib_sig_domain - Parameters for signature domain
734 * @sig_type: specific signauture type
735 * @sig: union of all signature domain attributes that may
736 * be used to set domain layout.
738 struct ib_sig_domain {
739 enum ib_signature_type sig_type;
741 struct ib_t10_dif_domain dif;
746 * struct ib_sig_attrs - Parameters for signature handover operation
747 * @check_mask: bitmask for signature byte check (8 bytes)
748 * @mem: memory domain layout desciptor.
749 * @wire: wire domain layout desciptor.
751 struct ib_sig_attrs {
753 struct ib_sig_domain mem;
754 struct ib_sig_domain wire;
757 enum ib_sig_err_type {
764 * struct ib_sig_err - signature error descriptor
767 enum ib_sig_err_type err_type;
774 enum ib_mr_status_check {
775 IB_MR_CHECK_SIG_STATUS = 1,
779 * struct ib_mr_status - Memory region status container
781 * @fail_status: Bitmask of MR checks status. For each
782 * failed check a corresponding status bit is set.
783 * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS
786 struct ib_mr_status {
788 struct ib_sig_err sig_err;
792 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
794 * @mult: multiple to convert.
796 __attribute_const__ enum ib_rate mult_to_ib_rate(int mult);
799 struct ib_global_route grh;
813 IB_WC_LOC_EEC_OP_ERR,
818 IB_WC_LOC_ACCESS_ERR,
819 IB_WC_REM_INV_REQ_ERR,
820 IB_WC_REM_ACCESS_ERR,
823 IB_WC_RNR_RETRY_EXC_ERR,
824 IB_WC_LOC_RDD_VIOL_ERR,
825 IB_WC_REM_INV_RD_REQ_ERR,
828 IB_WC_INV_EEC_STATE_ERR,
830 IB_WC_RESP_TIMEOUT_ERR,
834 const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status);
845 IB_WC_MASKED_COMP_SWAP,
846 IB_WC_MASKED_FETCH_ADD,
848 * Set value of IB_WC_RECV so consumers can test if a completion is a
849 * receive by testing (opcode & IB_WC_RECV).
852 IB_WC_RECV_RDMA_WITH_IMM
857 IB_WC_WITH_IMM = (1<<1),
858 IB_WC_WITH_INVALIDATE = (1<<2),
859 IB_WC_IP_CSUM_OK = (1<<3),
860 IB_WC_WITH_SMAC = (1<<4),
861 IB_WC_WITH_VLAN = (1<<5),
862 IB_WC_WITH_NETWORK_HDR_TYPE = (1<<6),
868 struct ib_cqe *wr_cqe;
870 enum ib_wc_status status;
871 enum ib_wc_opcode opcode;
885 u8 port_num; /* valid only for DR SMPs on switches */
891 enum ib_cq_notify_flags {
892 IB_CQ_SOLICITED = 1 << 0,
893 IB_CQ_NEXT_COMP = 1 << 1,
894 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
895 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
903 enum ib_srq_attr_mask {
904 IB_SRQ_MAX_WR = 1 << 0,
905 IB_SRQ_LIMIT = 1 << 1,
914 struct ib_srq_init_attr {
915 void (*event_handler)(struct ib_event *, void *);
917 struct ib_srq_attr attr;
918 enum ib_srq_type srq_type;
922 struct ib_xrcd *xrcd;
936 * Maximum number of rdma_rw_ctx structures in flight at a time.
937 * ib_create_qp() will calculate the right amount of neededed WRs
938 * and MRs based on this.
950 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
951 * here (and in that order) since the MAD layer uses them as
952 * indices into a 2-entry table.
961 IB_QPT_RAW_ETHERTYPE,
962 IB_QPT_RAW_PACKET = 8,
966 /* Reserve a range for qp types internal to the low level driver.
967 * These qp types will not be visible at the IB core layer, so the
968 * IB_QPT_MAX usages should not be affected in the core layer
970 IB_QPT_RESERVED1 = 0x1000,
982 enum ib_qp_create_flags {
983 IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0,
984 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
985 IB_QP_CREATE_CROSS_CHANNEL = 1 << 2,
986 IB_QP_CREATE_MANAGED_SEND = 1 << 3,
987 IB_QP_CREATE_MANAGED_RECV = 1 << 4,
988 IB_QP_CREATE_NETIF_QP = 1 << 5,
989 IB_QP_CREATE_SIGNATURE_EN = 1 << 6,
990 IB_QP_CREATE_USE_GFP_NOIO = 1 << 7,
991 IB_QP_CREATE_SCATTER_FCS = 1 << 8,
992 /* reserve bits 26-31 for low level drivers' internal use */
993 IB_QP_CREATE_RESERVED_START = 1 << 26,
994 IB_QP_CREATE_RESERVED_END = 1 << 31,
998 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
999 * callback to destroy the passed in QP.
1002 struct ib_qp_init_attr {
1003 void (*event_handler)(struct ib_event *, void *);
1005 struct ib_cq *send_cq;
1006 struct ib_cq *recv_cq;
1008 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1009 struct ib_qp_cap cap;
1010 enum ib_sig_type sq_sig_type;
1011 enum ib_qp_type qp_type;
1012 enum ib_qp_create_flags create_flags;
1015 * Only needed for special QP types, or when using the RW API.
1020 struct ib_qp_open_attr {
1021 void (*event_handler)(struct ib_event *, void *);
1024 enum ib_qp_type qp_type;
1027 enum ib_rnr_timeout {
1028 IB_RNR_TIMER_655_36 = 0,
1029 IB_RNR_TIMER_000_01 = 1,
1030 IB_RNR_TIMER_000_02 = 2,
1031 IB_RNR_TIMER_000_03 = 3,
1032 IB_RNR_TIMER_000_04 = 4,
1033 IB_RNR_TIMER_000_06 = 5,
1034 IB_RNR_TIMER_000_08 = 6,
1035 IB_RNR_TIMER_000_12 = 7,
1036 IB_RNR_TIMER_000_16 = 8,
1037 IB_RNR_TIMER_000_24 = 9,
1038 IB_RNR_TIMER_000_32 = 10,
1039 IB_RNR_TIMER_000_48 = 11,
1040 IB_RNR_TIMER_000_64 = 12,
1041 IB_RNR_TIMER_000_96 = 13,
1042 IB_RNR_TIMER_001_28 = 14,
1043 IB_RNR_TIMER_001_92 = 15,
1044 IB_RNR_TIMER_002_56 = 16,
1045 IB_RNR_TIMER_003_84 = 17,
1046 IB_RNR_TIMER_005_12 = 18,
1047 IB_RNR_TIMER_007_68 = 19,
1048 IB_RNR_TIMER_010_24 = 20,
1049 IB_RNR_TIMER_015_36 = 21,
1050 IB_RNR_TIMER_020_48 = 22,
1051 IB_RNR_TIMER_030_72 = 23,
1052 IB_RNR_TIMER_040_96 = 24,
1053 IB_RNR_TIMER_061_44 = 25,
1054 IB_RNR_TIMER_081_92 = 26,
1055 IB_RNR_TIMER_122_88 = 27,
1056 IB_RNR_TIMER_163_84 = 28,
1057 IB_RNR_TIMER_245_76 = 29,
1058 IB_RNR_TIMER_327_68 = 30,
1059 IB_RNR_TIMER_491_52 = 31
1062 enum ib_qp_attr_mask {
1064 IB_QP_CUR_STATE = (1<<1),
1065 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
1066 IB_QP_ACCESS_FLAGS = (1<<3),
1067 IB_QP_PKEY_INDEX = (1<<4),
1068 IB_QP_PORT = (1<<5),
1069 IB_QP_QKEY = (1<<6),
1071 IB_QP_PATH_MTU = (1<<8),
1072 IB_QP_TIMEOUT = (1<<9),
1073 IB_QP_RETRY_CNT = (1<<10),
1074 IB_QP_RNR_RETRY = (1<<11),
1075 IB_QP_RQ_PSN = (1<<12),
1076 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
1077 IB_QP_ALT_PATH = (1<<14),
1078 IB_QP_MIN_RNR_TIMER = (1<<15),
1079 IB_QP_SQ_PSN = (1<<16),
1080 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
1081 IB_QP_PATH_MIG_STATE = (1<<18),
1082 IB_QP_CAP = (1<<19),
1083 IB_QP_DEST_QPN = (1<<20),
1084 IB_QP_RESERVED1 = (1<<21),
1085 IB_QP_RESERVED2 = (1<<22),
1086 IB_QP_RESERVED3 = (1<<23),
1087 IB_QP_RESERVED4 = (1<<24),
1112 enum ib_qp_state qp_state;
1113 enum ib_qp_state cur_qp_state;
1114 enum ib_mtu path_mtu;
1115 enum ib_mig_state path_mig_state;
1120 int qp_access_flags;
1121 struct ib_qp_cap cap;
1122 struct ib_ah_attr ah_attr;
1123 struct ib_ah_attr alt_ah_attr;
1126 u8 en_sqd_async_notify;
1129 u8 max_dest_rd_atomic;
1141 IB_WR_RDMA_WRITE_WITH_IMM,
1143 IB_WR_SEND_WITH_IMM,
1145 IB_WR_ATOMIC_CMP_AND_SWP,
1146 IB_WR_ATOMIC_FETCH_AND_ADD,
1148 IB_WR_SEND_WITH_INV,
1149 IB_WR_RDMA_READ_WITH_INV,
1152 IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
1153 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
1155 /* reserve values for low level drivers' internal use.
1156 * These values will not be used at all in the ib core layer.
1158 IB_WR_RESERVED1 = 0xf0,
1170 enum ib_send_flags {
1172 IB_SEND_SIGNALED = (1<<1),
1173 IB_SEND_SOLICITED = (1<<2),
1174 IB_SEND_INLINE = (1<<3),
1175 IB_SEND_IP_CSUM = (1<<4),
1177 /* reserve bits 26-31 for low level drivers' internal use */
1178 IB_SEND_RESERVED_START = (1 << 26),
1179 IB_SEND_RESERVED_END = (1 << 31),
1189 void (*done)(struct ib_cq *cq, struct ib_wc *wc);
1193 struct ib_send_wr *next;
1196 struct ib_cqe *wr_cqe;
1198 struct ib_sge *sg_list;
1200 enum ib_wr_opcode opcode;
1204 u32 invalidate_rkey;
1209 struct ib_send_wr wr;
1214 static inline struct ib_rdma_wr *rdma_wr(struct ib_send_wr *wr)
1216 return container_of(wr, struct ib_rdma_wr, wr);
1219 struct ib_atomic_wr {
1220 struct ib_send_wr wr;
1224 u64 compare_add_mask;
1229 static inline struct ib_atomic_wr *atomic_wr(struct ib_send_wr *wr)
1231 return container_of(wr, struct ib_atomic_wr, wr);
1235 struct ib_send_wr wr;
1242 u16 pkey_index; /* valid for GSI only */
1243 u8 port_num; /* valid for DR SMPs on switch only */
1246 static inline struct ib_ud_wr *ud_wr(struct ib_send_wr *wr)
1248 return container_of(wr, struct ib_ud_wr, wr);
1252 struct ib_send_wr wr;
1258 static inline struct ib_reg_wr *reg_wr(struct ib_send_wr *wr)
1260 return container_of(wr, struct ib_reg_wr, wr);
1263 struct ib_sig_handover_wr {
1264 struct ib_send_wr wr;
1265 struct ib_sig_attrs *sig_attrs;
1266 struct ib_mr *sig_mr;
1268 struct ib_sge *prot;
1271 static inline struct ib_sig_handover_wr *sig_handover_wr(struct ib_send_wr *wr)
1273 return container_of(wr, struct ib_sig_handover_wr, wr);
1277 struct ib_recv_wr *next;
1280 struct ib_cqe *wr_cqe;
1282 struct ib_sge *sg_list;
1286 enum ib_access_flags {
1287 IB_ACCESS_LOCAL_WRITE = 1,
1288 IB_ACCESS_REMOTE_WRITE = (1<<1),
1289 IB_ACCESS_REMOTE_READ = (1<<2),
1290 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
1291 IB_ACCESS_MW_BIND = (1<<4),
1292 IB_ZERO_BASED = (1<<5),
1293 IB_ACCESS_ON_DEMAND = (1<<6),
1297 * XXX: these are apparently used for ->rereg_user_mr, no idea why they
1298 * are hidden here instead of a uapi header!
1300 enum ib_mr_rereg_flags {
1301 IB_MR_REREG_TRANS = 1,
1302 IB_MR_REREG_PD = (1<<1),
1303 IB_MR_REREG_ACCESS = (1<<2),
1304 IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
1307 struct ib_fmr_attr {
1315 struct ib_ucontext {
1316 struct ib_device *device;
1317 struct list_head pd_list;
1318 struct list_head mr_list;
1319 struct list_head mw_list;
1320 struct list_head cq_list;
1321 struct list_head qp_list;
1322 struct list_head srq_list;
1323 struct list_head ah_list;
1324 struct list_head xrcd_list;
1325 struct list_head rule_list;
1329 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1330 struct rb_root umem_tree;
1332 * Protects .umem_rbroot and tree, as well as odp_mrs_count and
1333 * mmu notifiers registration.
1335 struct rw_semaphore umem_rwsem;
1336 void (*invalidate_range)(struct ib_umem *umem,
1337 unsigned long start, unsigned long end);
1339 struct mmu_notifier mn;
1340 atomic_t notifier_count;
1341 /* A list of umems that don't have private mmu notifier counters yet. */
1342 struct list_head no_private_counters;
1348 u64 user_handle; /* handle given to us by userspace */
1349 struct ib_ucontext *context; /* associated user context */
1350 void *object; /* containing object */
1351 struct list_head list; /* link to context's list */
1352 int id; /* index into kernel idr */
1354 struct rw_semaphore mutex; /* protects .live */
1355 struct rcu_head rcu; /* kfree_rcu() overhead */
1360 const void __user *inbuf;
1361 void __user *outbuf;
1368 struct ib_device *device;
1369 struct ib_uobject *uobject;
1370 atomic_t usecnt; /* count all resources */
1371 struct ib_mr *local_mr;
1375 struct ib_device *device;
1376 atomic_t usecnt; /* count all exposed resources */
1377 struct inode *inode;
1379 struct mutex tgt_qp_mutex;
1380 struct list_head tgt_qp_list;
1384 struct ib_device *device;
1386 struct ib_uobject *uobject;
1389 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
1391 enum ib_poll_context {
1392 IB_POLL_DIRECT, /* caller context, no hw completions */
1393 IB_POLL_SOFTIRQ, /* poll from softirq context */
1394 IB_POLL_WORKQUEUE, /* poll from workqueue */
1398 struct ib_device *device;
1399 struct ib_uobject *uobject;
1400 ib_comp_handler comp_handler;
1401 void (*event_handler)(struct ib_event *, void *);
1404 atomic_t usecnt; /* count number of work queues */
1405 enum ib_poll_context poll_ctx;
1408 struct irq_poll iop;
1409 struct work_struct work;
1414 struct ib_device *device;
1416 struct ib_uobject *uobject;
1417 void (*event_handler)(struct ib_event *, void *);
1419 enum ib_srq_type srq_type;
1424 struct ib_xrcd *xrcd;
1432 struct ib_device *device;
1434 struct ib_cq *send_cq;
1435 struct ib_cq *recv_cq;
1438 struct list_head rdma_mrs;
1439 struct list_head sig_mrs;
1441 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1442 struct list_head xrcd_list;
1444 /* count times opened, mcast attaches, flow attaches */
1446 struct list_head open_list;
1447 struct ib_qp *real_qp;
1448 struct ib_uobject *uobject;
1449 void (*event_handler)(struct ib_event *, void *);
1452 enum ib_qp_type qp_type;
1456 struct ib_device *device;
1462 unsigned int page_size;
1465 struct ib_uobject *uobject; /* user */
1466 struct list_head qp_entry; /* FR */
1471 struct ib_device *device;
1473 struct ib_uobject *uobject;
1475 enum ib_mw_type type;
1479 struct ib_device *device;
1481 struct list_head list;
1486 /* Supported steering options */
1487 enum ib_flow_attr_type {
1488 /* steering according to rule specifications */
1489 IB_FLOW_ATTR_NORMAL = 0x0,
1490 /* default unicast and multicast rule -
1491 * receive all Eth traffic which isn't steered to any QP
1493 IB_FLOW_ATTR_ALL_DEFAULT = 0x1,
1494 /* default multicast rule -
1495 * receive all Eth multicast traffic which isn't steered to any QP
1497 IB_FLOW_ATTR_MC_DEFAULT = 0x2,
1498 /* sniffer rule - receive all port traffic */
1499 IB_FLOW_ATTR_SNIFFER = 0x3
1502 /* Supported steering header types */
1503 enum ib_flow_spec_type {
1505 IB_FLOW_SPEC_ETH = 0x20,
1506 IB_FLOW_SPEC_IB = 0x22,
1508 IB_FLOW_SPEC_IPV4 = 0x30,
1510 IB_FLOW_SPEC_TCP = 0x40,
1511 IB_FLOW_SPEC_UDP = 0x41
1513 #define IB_FLOW_SPEC_LAYER_MASK 0xF0
1514 #define IB_FLOW_SPEC_SUPPORT_LAYERS 4
1516 /* Flow steering rule priority is set according to it's domain.
1517 * Lower domain value means higher priority.
1519 enum ib_flow_domain {
1520 IB_FLOW_DOMAIN_USER,
1521 IB_FLOW_DOMAIN_ETHTOOL,
1524 IB_FLOW_DOMAIN_NUM /* Must be last */
1527 enum ib_flow_flags {
1528 IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */
1529 IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 2 /* Must be last */
1532 struct ib_flow_eth_filter {
1539 struct ib_flow_spec_eth {
1540 enum ib_flow_spec_type type;
1542 struct ib_flow_eth_filter val;
1543 struct ib_flow_eth_filter mask;
1546 struct ib_flow_ib_filter {
1551 struct ib_flow_spec_ib {
1552 enum ib_flow_spec_type type;
1554 struct ib_flow_ib_filter val;
1555 struct ib_flow_ib_filter mask;
1558 struct ib_flow_ipv4_filter {
1563 struct ib_flow_spec_ipv4 {
1564 enum ib_flow_spec_type type;
1566 struct ib_flow_ipv4_filter val;
1567 struct ib_flow_ipv4_filter mask;
1570 struct ib_flow_tcp_udp_filter {
1575 struct ib_flow_spec_tcp_udp {
1576 enum ib_flow_spec_type type;
1578 struct ib_flow_tcp_udp_filter val;
1579 struct ib_flow_tcp_udp_filter mask;
1582 union ib_flow_spec {
1584 enum ib_flow_spec_type type;
1587 struct ib_flow_spec_eth eth;
1588 struct ib_flow_spec_ib ib;
1589 struct ib_flow_spec_ipv4 ipv4;
1590 struct ib_flow_spec_tcp_udp tcp_udp;
1593 struct ib_flow_attr {
1594 enum ib_flow_attr_type type;
1600 /* Following are the optional layers according to user request
1601 * struct ib_flow_spec_xxx
1602 * struct ib_flow_spec_yyy
1608 struct ib_uobject *uobject;
1614 enum ib_process_mad_flags {
1615 IB_MAD_IGNORE_MKEY = 1,
1616 IB_MAD_IGNORE_BKEY = 2,
1617 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
1620 enum ib_mad_result {
1621 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
1622 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
1623 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
1624 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
1627 #define IB_DEVICE_NAME_MAX 64
1631 struct ib_event_handler event_handler;
1632 struct ib_pkey_cache **pkey_cache;
1633 struct ib_gid_table **gid_cache;
1637 struct ib_dma_mapping_ops {
1638 int (*mapping_error)(struct ib_device *dev,
1640 u64 (*map_single)(struct ib_device *dev,
1641 void *ptr, size_t size,
1642 enum dma_data_direction direction);
1643 void (*unmap_single)(struct ib_device *dev,
1644 u64 addr, size_t size,
1645 enum dma_data_direction direction);
1646 u64 (*map_page)(struct ib_device *dev,
1647 struct page *page, unsigned long offset,
1649 enum dma_data_direction direction);
1650 void (*unmap_page)(struct ib_device *dev,
1651 u64 addr, size_t size,
1652 enum dma_data_direction direction);
1653 int (*map_sg)(struct ib_device *dev,
1654 struct scatterlist *sg, int nents,
1655 enum dma_data_direction direction);
1656 void (*unmap_sg)(struct ib_device *dev,
1657 struct scatterlist *sg, int nents,
1658 enum dma_data_direction direction);
1659 void (*sync_single_for_cpu)(struct ib_device *dev,
1662 enum dma_data_direction dir);
1663 void (*sync_single_for_device)(struct ib_device *dev,
1666 enum dma_data_direction dir);
1667 void *(*alloc_coherent)(struct ib_device *dev,
1671 void (*free_coherent)(struct ib_device *dev,
1672 size_t size, void *cpu_addr,
1678 struct ib_port_immutable {
1686 struct device *dma_device;
1688 char name[IB_DEVICE_NAME_MAX];
1690 struct list_head event_handler_list;
1691 spinlock_t event_handler_lock;
1693 spinlock_t client_data_lock;
1694 struct list_head core_list;
1695 /* Access to the client_data_list is protected by the client_data_lock
1696 * spinlock and the lists_rwsem read-write semaphore */
1697 struct list_head client_data_list;
1699 struct ib_cache cache;
1701 * port_immutable is indexed by port number
1703 struct ib_port_immutable *port_immutable;
1705 int num_comp_vectors;
1707 struct iw_cm_verbs *iwcm;
1710 * alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the
1711 * driver initialized data. The struct is kfree()'ed by the sysfs
1712 * core when the device is removed. A lifespan of -1 in the return
1713 * struct tells the core to set a default lifespan.
1715 struct rdma_hw_stats *(*alloc_hw_stats)(struct ib_device *device,
1718 * get_hw_stats - Fill in the counter value(s) in the stats struct.
1719 * @index - The index in the value array we wish to have updated, or
1720 * num_counters if we want all stats updated
1722 * < 0 - Error, no counters updated
1723 * index - Updated the single counter pointed to by index
1724 * num_counters - Updated all counters (will reset the timestamp
1725 * and prevent further calls for lifespan milliseconds)
1726 * Drivers are allowed to update all counters in leiu of just the
1727 * one given in index at their option
1729 int (*get_hw_stats)(struct ib_device *device,
1730 struct rdma_hw_stats *stats,
1731 u8 port, int index);
1732 int (*query_device)(struct ib_device *device,
1733 struct ib_device_attr *device_attr,
1734 struct ib_udata *udata);
1735 int (*query_port)(struct ib_device *device,
1737 struct ib_port_attr *port_attr);
1738 enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
1740 /* When calling get_netdev, the HW vendor's driver should return the
1741 * net device of device @device at port @port_num or NULL if such
1742 * a net device doesn't exist. The vendor driver should call dev_hold
1743 * on this net device. The HW vendor's device driver must guarantee
1744 * that this function returns NULL before the net device reaches
1745 * NETDEV_UNREGISTER_FINAL state.
1747 struct net_device *(*get_netdev)(struct ib_device *device,
1749 int (*query_gid)(struct ib_device *device,
1750 u8 port_num, int index,
1752 /* When calling add_gid, the HW vendor's driver should
1753 * add the gid of device @device at gid index @index of
1754 * port @port_num to be @gid. Meta-info of that gid (for example,
1755 * the network device related to this gid is available
1756 * at @attr. @context allows the HW vendor driver to store extra
1757 * information together with a GID entry. The HW vendor may allocate
1758 * memory to contain this information and store it in @context when a
1759 * new GID entry is written to. Params are consistent until the next
1760 * call of add_gid or delete_gid. The function should return 0 on
1761 * success or error otherwise. The function could be called
1762 * concurrently for different ports. This function is only called
1763 * when roce_gid_table is used.
1765 int (*add_gid)(struct ib_device *device,
1768 const union ib_gid *gid,
1769 const struct ib_gid_attr *attr,
1771 /* When calling del_gid, the HW vendor's driver should delete the
1772 * gid of device @device at gid index @index of port @port_num.
1773 * Upon the deletion of a GID entry, the HW vendor must free any
1774 * allocated memory. The caller will clear @context afterwards.
1775 * This function is only called when roce_gid_table is used.
1777 int (*del_gid)(struct ib_device *device,
1781 int (*query_pkey)(struct ib_device *device,
1782 u8 port_num, u16 index, u16 *pkey);
1783 int (*modify_device)(struct ib_device *device,
1784 int device_modify_mask,
1785 struct ib_device_modify *device_modify);
1786 int (*modify_port)(struct ib_device *device,
1787 u8 port_num, int port_modify_mask,
1788 struct ib_port_modify *port_modify);
1789 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
1790 struct ib_udata *udata);
1791 int (*dealloc_ucontext)(struct ib_ucontext *context);
1792 int (*mmap)(struct ib_ucontext *context,
1793 struct vm_area_struct *vma);
1794 struct ib_pd * (*alloc_pd)(struct ib_device *device,
1795 struct ib_ucontext *context,
1796 struct ib_udata *udata);
1797 int (*dealloc_pd)(struct ib_pd *pd);
1798 struct ib_ah * (*create_ah)(struct ib_pd *pd,
1799 struct ib_ah_attr *ah_attr);
1800 int (*modify_ah)(struct ib_ah *ah,
1801 struct ib_ah_attr *ah_attr);
1802 int (*query_ah)(struct ib_ah *ah,
1803 struct ib_ah_attr *ah_attr);
1804 int (*destroy_ah)(struct ib_ah *ah);
1805 struct ib_srq * (*create_srq)(struct ib_pd *pd,
1806 struct ib_srq_init_attr *srq_init_attr,
1807 struct ib_udata *udata);
1808 int (*modify_srq)(struct ib_srq *srq,
1809 struct ib_srq_attr *srq_attr,
1810 enum ib_srq_attr_mask srq_attr_mask,
1811 struct ib_udata *udata);
1812 int (*query_srq)(struct ib_srq *srq,
1813 struct ib_srq_attr *srq_attr);
1814 int (*destroy_srq)(struct ib_srq *srq);
1815 int (*post_srq_recv)(struct ib_srq *srq,
1816 struct ib_recv_wr *recv_wr,
1817 struct ib_recv_wr **bad_recv_wr);
1818 struct ib_qp * (*create_qp)(struct ib_pd *pd,
1819 struct ib_qp_init_attr *qp_init_attr,
1820 struct ib_udata *udata);
1821 int (*modify_qp)(struct ib_qp *qp,
1822 struct ib_qp_attr *qp_attr,
1824 struct ib_udata *udata);
1825 int (*query_qp)(struct ib_qp *qp,
1826 struct ib_qp_attr *qp_attr,
1828 struct ib_qp_init_attr *qp_init_attr);
1829 int (*destroy_qp)(struct ib_qp *qp);
1830 int (*post_send)(struct ib_qp *qp,
1831 struct ib_send_wr *send_wr,
1832 struct ib_send_wr **bad_send_wr);
1833 int (*post_recv)(struct ib_qp *qp,
1834 struct ib_recv_wr *recv_wr,
1835 struct ib_recv_wr **bad_recv_wr);
1836 struct ib_cq * (*create_cq)(struct ib_device *device,
1837 const struct ib_cq_init_attr *attr,
1838 struct ib_ucontext *context,
1839 struct ib_udata *udata);
1840 int (*modify_cq)(struct ib_cq *cq, u16 cq_count,
1842 int (*destroy_cq)(struct ib_cq *cq);
1843 int (*resize_cq)(struct ib_cq *cq, int cqe,
1844 struct ib_udata *udata);
1845 int (*poll_cq)(struct ib_cq *cq, int num_entries,
1847 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
1848 int (*req_notify_cq)(struct ib_cq *cq,
1849 enum ib_cq_notify_flags flags);
1850 int (*req_ncomp_notif)(struct ib_cq *cq,
1852 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
1853 int mr_access_flags);
1854 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
1855 u64 start, u64 length,
1857 int mr_access_flags,
1858 struct ib_udata *udata);
1859 int (*rereg_user_mr)(struct ib_mr *mr,
1861 u64 start, u64 length,
1863 int mr_access_flags,
1865 struct ib_udata *udata);
1866 int (*dereg_mr)(struct ib_mr *mr);
1867 struct ib_mr * (*alloc_mr)(struct ib_pd *pd,
1868 enum ib_mr_type mr_type,
1870 int (*map_mr_sg)(struct ib_mr *mr,
1871 struct scatterlist *sg,
1873 unsigned int *sg_offset);
1874 struct ib_mw * (*alloc_mw)(struct ib_pd *pd,
1875 enum ib_mw_type type,
1876 struct ib_udata *udata);
1877 int (*dealloc_mw)(struct ib_mw *mw);
1878 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
1879 int mr_access_flags,
1880 struct ib_fmr_attr *fmr_attr);
1881 int (*map_phys_fmr)(struct ib_fmr *fmr,
1882 u64 *page_list, int list_len,
1884 int (*unmap_fmr)(struct list_head *fmr_list);
1885 int (*dealloc_fmr)(struct ib_fmr *fmr);
1886 int (*attach_mcast)(struct ib_qp *qp,
1889 int (*detach_mcast)(struct ib_qp *qp,
1892 int (*process_mad)(struct ib_device *device,
1893 int process_mad_flags,
1895 const struct ib_wc *in_wc,
1896 const struct ib_grh *in_grh,
1897 const struct ib_mad_hdr *in_mad,
1899 struct ib_mad_hdr *out_mad,
1900 size_t *out_mad_size,
1901 u16 *out_mad_pkey_index);
1902 struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device,
1903 struct ib_ucontext *ucontext,
1904 struct ib_udata *udata);
1905 int (*dealloc_xrcd)(struct ib_xrcd *xrcd);
1906 struct ib_flow * (*create_flow)(struct ib_qp *qp,
1910 int (*destroy_flow)(struct ib_flow *flow_id);
1911 int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
1912 struct ib_mr_status *mr_status);
1913 void (*disassociate_ucontext)(struct ib_ucontext *ibcontext);
1914 void (*drain_rq)(struct ib_qp *qp);
1915 void (*drain_sq)(struct ib_qp *qp);
1916 int (*set_vf_link_state)(struct ib_device *device, int vf, u8 port,
1918 int (*get_vf_config)(struct ib_device *device, int vf, u8 port,
1919 struct ifla_vf_info *ivf);
1920 int (*get_vf_stats)(struct ib_device *device, int vf, u8 port,
1921 struct ifla_vf_stats *stats);
1922 int (*set_vf_guid)(struct ib_device *device, int vf, u8 port, u64 guid,
1925 struct ib_dma_mapping_ops *dma_ops;
1927 struct module *owner;
1929 struct kobject *ports_parent;
1930 struct list_head port_list;
1933 IB_DEV_UNINITIALIZED,
1939 u64 uverbs_cmd_mask;
1940 u64 uverbs_ex_cmd_mask;
1948 struct ib_device_attr attrs;
1949 struct attribute_group *hw_stats_ag;
1950 struct rdma_hw_stats *hw_stats;
1953 * The following mandatory functions are used only at device
1954 * registration. Keep functions such as these at the end of this
1955 * structure to avoid cache line misses when accessing struct ib_device
1958 int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *);
1963 void (*add) (struct ib_device *);
1964 void (*remove)(struct ib_device *, void *client_data);
1966 /* Returns the net_dev belonging to this ib_client and matching the
1968 * @dev: An RDMA device that the net_dev use for communication.
1969 * @port: A physical port number on the RDMA device.
1970 * @pkey: P_Key that the net_dev uses if applicable.
1971 * @gid: A GID that the net_dev uses to communicate.
1972 * @addr: An IP address the net_dev is configured with.
1973 * @client_data: The device's client data set by ib_set_client_data().
1975 * An ib_client that implements a net_dev on top of RDMA devices
1976 * (such as IP over IB) should implement this callback, allowing the
1977 * rdma_cm module to find the right net_dev for a given request.
1979 * The caller is responsible for calling dev_put on the returned
1981 struct net_device *(*get_net_dev_by_params)(
1982 struct ib_device *dev,
1985 const union ib_gid *gid,
1986 const struct sockaddr *addr,
1988 struct list_head list;
1991 struct ib_device *ib_alloc_device(size_t size);
1992 void ib_dealloc_device(struct ib_device *device);
1994 int ib_register_device(struct ib_device *device,
1995 int (*port_callback)(struct ib_device *,
1996 u8, struct kobject *));
1997 void ib_unregister_device(struct ib_device *device);
1999 int ib_register_client (struct ib_client *client);
2000 void ib_unregister_client(struct ib_client *client);
2002 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
2003 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
2006 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
2008 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
2011 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
2013 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
2016 static inline bool ib_is_udata_cleared(struct ib_udata *udata,
2020 const void __user *p = udata->inbuf + offset;
2024 if (len > USHRT_MAX)
2027 buf = kmalloc(len, GFP_KERNEL);
2031 if (copy_from_user(buf, p, len))
2034 ret = !memchr_inv(buf, 0, len);
2042 * ib_modify_qp_is_ok - Check that the supplied attribute mask
2043 * contains all required attributes and no attributes not allowed for
2044 * the given QP state transition.
2045 * @cur_state: Current QP state
2046 * @next_state: Next QP state
2048 * @mask: Mask of supplied QP attributes
2049 * @ll : link layer of port
2051 * This function is a helper function that a low-level driver's
2052 * modify_qp method can use to validate the consumer's input. It
2053 * checks that cur_state and next_state are valid QP states, that a
2054 * transition from cur_state to next_state is allowed by the IB spec,
2055 * and that the attribute mask supplied is allowed for the transition.
2057 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
2058 enum ib_qp_type type, enum ib_qp_attr_mask mask,
2059 enum rdma_link_layer ll);
2061 int ib_register_event_handler (struct ib_event_handler *event_handler);
2062 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
2063 void ib_dispatch_event(struct ib_event *event);
2065 int ib_query_port(struct ib_device *device,
2066 u8 port_num, struct ib_port_attr *port_attr);
2068 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
2072 * rdma_cap_ib_switch - Check if the device is IB switch
2073 * @device: Device to check
2075 * Device driver is responsible for setting is_switch bit on
2076 * in ib_device structure at init time.
2078 * Return: true if the device is IB switch.
2080 static inline bool rdma_cap_ib_switch(const struct ib_device *device)
2082 return device->is_switch;
2086 * rdma_start_port - Return the first valid port number for the device
2089 * @device: Device to be checked
2091 * Return start port number
2093 static inline u8 rdma_start_port(const struct ib_device *device)
2095 return rdma_cap_ib_switch(device) ? 0 : 1;
2099 * rdma_end_port - Return the last valid port number for the device
2102 * @device: Device to be checked
2104 * Return last port number
2106 static inline u8 rdma_end_port(const struct ib_device *device)
2108 return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt;
2111 static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num)
2113 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB;
2116 static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num)
2118 return device->port_immutable[port_num].core_cap_flags &
2119 (RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP);
2122 static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, u8 port_num)
2124 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
2127 static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, u8 port_num)
2129 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE;
2132 static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num)
2134 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP;
2137 static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num)
2139 return rdma_protocol_ib(device, port_num) ||
2140 rdma_protocol_roce(device, port_num);
2144 * rdma_cap_ib_mad - Check if the port of a device supports Infiniband
2145 * Management Datagrams.
2146 * @device: Device to check
2147 * @port_num: Port number to check
2149 * Management Datagrams (MAD) are a required part of the InfiniBand
2150 * specification and are supported on all InfiniBand devices. A slightly
2151 * extended version are also supported on OPA interfaces.
2153 * Return: true if the port supports sending/receiving of MAD packets.
2155 static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num)
2157 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_MAD;
2161 * rdma_cap_opa_mad - Check if the port of device provides support for OPA
2162 * Management Datagrams.
2163 * @device: Device to check
2164 * @port_num: Port number to check
2166 * Intel OmniPath devices extend and/or replace the InfiniBand Management
2167 * datagrams with their own versions. These OPA MADs share many but not all of
2168 * the characteristics of InfiniBand MADs.
2170 * OPA MADs differ in the following ways:
2172 * 1) MADs are variable size up to 2K
2173 * IBTA defined MADs remain fixed at 256 bytes
2174 * 2) OPA SMPs must carry valid PKeys
2175 * 3) OPA SMP packets are a different format
2177 * Return: true if the port supports OPA MAD packet formats.
2179 static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num)
2181 return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD)
2182 == RDMA_CORE_CAP_OPA_MAD;
2186 * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband
2187 * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI).
2188 * @device: Device to check
2189 * @port_num: Port number to check
2191 * Each InfiniBand node is required to provide a Subnet Management Agent
2192 * that the subnet manager can access. Prior to the fabric being fully
2193 * configured by the subnet manager, the SMA is accessed via a well known
2194 * interface called the Subnet Management Interface (SMI). This interface
2195 * uses directed route packets to communicate with the SM to get around the
2196 * chicken and egg problem of the SM needing to know what's on the fabric
2197 * in order to configure the fabric, and needing to configure the fabric in
2198 * order to send packets to the devices on the fabric. These directed
2199 * route packets do not need the fabric fully configured in order to reach
2200 * their destination. The SMI is the only method allowed to send
2201 * directed route packets on an InfiniBand fabric.
2203 * Return: true if the port provides an SMI.
2205 static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num)
2207 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SMI;
2211 * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband
2212 * Communication Manager.
2213 * @device: Device to check
2214 * @port_num: Port number to check
2216 * The InfiniBand Communication Manager is one of many pre-defined General
2217 * Service Agents (GSA) that are accessed via the General Service
2218 * Interface (GSI). It's role is to facilitate establishment of connections
2219 * between nodes as well as other management related tasks for established
2222 * Return: true if the port supports an IB CM (this does not guarantee that
2223 * a CM is actually running however).
2225 static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num)
2227 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_CM;
2231 * rdma_cap_iw_cm - Check if the port of device has the capability IWARP
2232 * Communication Manager.
2233 * @device: Device to check
2234 * @port_num: Port number to check
2236 * Similar to above, but specific to iWARP connections which have a different
2237 * managment protocol than InfiniBand.
2239 * Return: true if the port supports an iWARP CM (this does not guarantee that
2240 * a CM is actually running however).
2242 static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num)
2244 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IW_CM;
2248 * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband
2249 * Subnet Administration.
2250 * @device: Device to check
2251 * @port_num: Port number to check
2253 * An InfiniBand Subnet Administration (SA) service is a pre-defined General
2254 * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand
2255 * fabrics, devices should resolve routes to other hosts by contacting the
2256 * SA to query the proper route.
2258 * Return: true if the port should act as a client to the fabric Subnet
2259 * Administration interface. This does not imply that the SA service is
2262 static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num)
2264 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SA;
2268 * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband
2270 * @device: Device to check
2271 * @port_num: Port number to check
2273 * InfiniBand multicast registration is more complex than normal IPv4 or
2274 * IPv6 multicast registration. Each Host Channel Adapter must register
2275 * with the Subnet Manager when it wishes to join a multicast group. It
2276 * should do so only once regardless of how many queue pairs it subscribes
2277 * to this group. And it should leave the group only after all queue pairs
2278 * attached to the group have been detached.
2280 * Return: true if the port must undertake the additional adminstrative
2281 * overhead of registering/unregistering with the SM and tracking of the
2282 * total number of queue pairs attached to the multicast group.
2284 static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num)
2286 return rdma_cap_ib_sa(device, port_num);
2290 * rdma_cap_af_ib - Check if the port of device has the capability
2291 * Native Infiniband Address.
2292 * @device: Device to check
2293 * @port_num: Port number to check
2295 * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default
2296 * GID. RoCE uses a different mechanism, but still generates a GID via
2297 * a prescribed mechanism and port specific data.
2299 * Return: true if the port uses a GID address to identify devices on the
2302 static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num)
2304 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_AF_IB;
2308 * rdma_cap_eth_ah - Check if the port of device has the capability
2309 * Ethernet Address Handle.
2310 * @device: Device to check
2311 * @port_num: Port number to check
2313 * RoCE is InfiniBand over Ethernet, and it uses a well defined technique
2314 * to fabricate GIDs over Ethernet/IP specific addresses native to the
2315 * port. Normally, packet headers are generated by the sending host
2316 * adapter, but when sending connectionless datagrams, we must manually
2317 * inject the proper headers for the fabric we are communicating over.
2319 * Return: true if we are running as a RoCE port and must force the
2320 * addition of a Global Route Header built from our Ethernet Address
2321 * Handle into our header list for connectionless packets.
2323 static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num)
2325 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_AH;
2329 * rdma_max_mad_size - Return the max MAD size required by this RDMA Port.
2332 * @port_num: Port number
2334 * This MAD size includes the MAD headers and MAD payload. No other headers
2337 * Return the max MAD size required by the Port. Will return 0 if the port
2338 * does not support MADs
2340 static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num)
2342 return device->port_immutable[port_num].max_mad_size;
2346 * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table
2347 * @device: Device to check
2348 * @port_num: Port number to check
2350 * RoCE GID table mechanism manages the various GIDs for a device.
2352 * NOTE: if allocating the port's GID table has failed, this call will still
2353 * return true, but any RoCE GID table API will fail.
2355 * Return: true if the port uses RoCE GID table mechanism in order to manage
2358 static inline bool rdma_cap_roce_gid_table(const struct ib_device *device,
2361 return rdma_protocol_roce(device, port_num) &&
2362 device->add_gid && device->del_gid;
2366 * Check if the device supports READ W/ INVALIDATE.
2368 static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num)
2371 * iWarp drivers must support READ W/ INVALIDATE. No other protocol
2372 * has support for it yet.
2374 return rdma_protocol_iwarp(dev, port_num);
2377 int ib_query_gid(struct ib_device *device,
2378 u8 port_num, int index, union ib_gid *gid,
2379 struct ib_gid_attr *attr);
2381 int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port,
2383 int ib_get_vf_config(struct ib_device *device, int vf, u8 port,
2384 struct ifla_vf_info *info);
2385 int ib_get_vf_stats(struct ib_device *device, int vf, u8 port,
2386 struct ifla_vf_stats *stats);
2387 int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid,
2390 int ib_query_pkey(struct ib_device *device,
2391 u8 port_num, u16 index, u16 *pkey);
2393 int ib_modify_device(struct ib_device *device,
2394 int device_modify_mask,
2395 struct ib_device_modify *device_modify);
2397 int ib_modify_port(struct ib_device *device,
2398 u8 port_num, int port_modify_mask,
2399 struct ib_port_modify *port_modify);
2401 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
2402 enum ib_gid_type gid_type, struct net_device *ndev,
2403 u8 *port_num, u16 *index);
2405 int ib_find_pkey(struct ib_device *device,
2406 u8 port_num, u16 pkey, u16 *index);
2408 struct ib_pd *ib_alloc_pd(struct ib_device *device);
2410 void ib_dealloc_pd(struct ib_pd *pd);
2413 * ib_create_ah - Creates an address handle for the given address vector.
2414 * @pd: The protection domain associated with the address handle.
2415 * @ah_attr: The attributes of the address vector.
2417 * The address handle is used to reference a local or global destination
2418 * in all UD QP post sends.
2420 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
2423 * ib_init_ah_from_wc - Initializes address handle attributes from a
2425 * @device: Device on which the received message arrived.
2426 * @port_num: Port on which the received message arrived.
2427 * @wc: Work completion associated with the received message.
2428 * @grh: References the received global route header. This parameter is
2429 * ignored unless the work completion indicates that the GRH is valid.
2430 * @ah_attr: Returned attributes that can be used when creating an address
2431 * handle for replying to the message.
2433 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num,
2434 const struct ib_wc *wc, const struct ib_grh *grh,
2435 struct ib_ah_attr *ah_attr);
2438 * ib_create_ah_from_wc - Creates an address handle associated with the
2439 * sender of the specified work completion.
2440 * @pd: The protection domain associated with the address handle.
2441 * @wc: Work completion information associated with a received message.
2442 * @grh: References the received global route header. This parameter is
2443 * ignored unless the work completion indicates that the GRH is valid.
2444 * @port_num: The outbound port number to associate with the address.
2446 * The address handle is used to reference a local or global destination
2447 * in all UD QP post sends.
2449 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc,
2450 const struct ib_grh *grh, u8 port_num);
2453 * ib_modify_ah - Modifies the address vector associated with an address
2455 * @ah: The address handle to modify.
2456 * @ah_attr: The new address vector attributes to associate with the
2459 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
2462 * ib_query_ah - Queries the address vector associated with an address
2464 * @ah: The address handle to query.
2465 * @ah_attr: The address vector attributes associated with the address
2468 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
2471 * ib_destroy_ah - Destroys an address handle.
2472 * @ah: The address handle to destroy.
2474 int ib_destroy_ah(struct ib_ah *ah);
2477 * ib_create_srq - Creates a SRQ associated with the specified protection
2479 * @pd: The protection domain associated with the SRQ.
2480 * @srq_init_attr: A list of initial attributes required to create the
2481 * SRQ. If SRQ creation succeeds, then the attributes are updated to
2482 * the actual capabilities of the created SRQ.
2484 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
2485 * requested size of the SRQ, and set to the actual values allocated
2486 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
2487 * will always be at least as large as the requested values.
2489 struct ib_srq *ib_create_srq(struct ib_pd *pd,
2490 struct ib_srq_init_attr *srq_init_attr);
2493 * ib_modify_srq - Modifies the attributes for the specified SRQ.
2494 * @srq: The SRQ to modify.
2495 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
2496 * the current values of selected SRQ attributes are returned.
2497 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
2498 * are being modified.
2500 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
2501 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
2502 * the number of receives queued drops below the limit.
2504 int ib_modify_srq(struct ib_srq *srq,
2505 struct ib_srq_attr *srq_attr,
2506 enum ib_srq_attr_mask srq_attr_mask);
2509 * ib_query_srq - Returns the attribute list and current values for the
2511 * @srq: The SRQ to query.
2512 * @srq_attr: The attributes of the specified SRQ.
2514 int ib_query_srq(struct ib_srq *srq,
2515 struct ib_srq_attr *srq_attr);
2518 * ib_destroy_srq - Destroys the specified SRQ.
2519 * @srq: The SRQ to destroy.
2521 int ib_destroy_srq(struct ib_srq *srq);
2524 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
2525 * @srq: The SRQ to post the work request on.
2526 * @recv_wr: A list of work requests to post on the receive queue.
2527 * @bad_recv_wr: On an immediate failure, this parameter will reference
2528 * the work request that failed to be posted on the QP.
2530 static inline int ib_post_srq_recv(struct ib_srq *srq,
2531 struct ib_recv_wr *recv_wr,
2532 struct ib_recv_wr **bad_recv_wr)
2534 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
2538 * ib_create_qp - Creates a QP associated with the specified protection
2540 * @pd: The protection domain associated with the QP.
2541 * @qp_init_attr: A list of initial attributes required to create the
2542 * QP. If QP creation succeeds, then the attributes are updated to
2543 * the actual capabilities of the created QP.
2545 struct ib_qp *ib_create_qp(struct ib_pd *pd,
2546 struct ib_qp_init_attr *qp_init_attr);
2549 * ib_modify_qp - Modifies the attributes for the specified QP and then
2550 * transitions the QP to the given state.
2551 * @qp: The QP to modify.
2552 * @qp_attr: On input, specifies the QP attributes to modify. On output,
2553 * the current values of selected QP attributes are returned.
2554 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
2555 * are being modified.
2557 int ib_modify_qp(struct ib_qp *qp,
2558 struct ib_qp_attr *qp_attr,
2562 * ib_query_qp - Returns the attribute list and current values for the
2564 * @qp: The QP to query.
2565 * @qp_attr: The attributes of the specified QP.
2566 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
2567 * @qp_init_attr: Additional attributes of the selected QP.
2569 * The qp_attr_mask may be used to limit the query to gathering only the
2570 * selected attributes.
2572 int ib_query_qp(struct ib_qp *qp,
2573 struct ib_qp_attr *qp_attr,
2575 struct ib_qp_init_attr *qp_init_attr);
2578 * ib_destroy_qp - Destroys the specified QP.
2579 * @qp: The QP to destroy.
2581 int ib_destroy_qp(struct ib_qp *qp);
2584 * ib_open_qp - Obtain a reference to an existing sharable QP.
2585 * @xrcd - XRC domain
2586 * @qp_open_attr: Attributes identifying the QP to open.
2588 * Returns a reference to a sharable QP.
2590 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
2591 struct ib_qp_open_attr *qp_open_attr);
2594 * ib_close_qp - Release an external reference to a QP.
2595 * @qp: The QP handle to release
2597 * The opened QP handle is released by the caller. The underlying
2598 * shared QP is not destroyed until all internal references are released.
2600 int ib_close_qp(struct ib_qp *qp);
2603 * ib_post_send - Posts a list of work requests to the send queue of
2605 * @qp: The QP to post the work request on.
2606 * @send_wr: A list of work requests to post on the send queue.
2607 * @bad_send_wr: On an immediate failure, this parameter will reference
2608 * the work request that failed to be posted on the QP.
2610 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
2611 * error is returned, the QP state shall not be affected,
2612 * ib_post_send() will return an immediate error after queueing any
2613 * earlier work requests in the list.
2615 static inline int ib_post_send(struct ib_qp *qp,
2616 struct ib_send_wr *send_wr,
2617 struct ib_send_wr **bad_send_wr)
2619 return qp->device->post_send(qp, send_wr, bad_send_wr);
2623 * ib_post_recv - Posts a list of work requests to the receive queue of
2625 * @qp: The QP to post the work request on.
2626 * @recv_wr: A list of work requests to post on the receive queue.
2627 * @bad_recv_wr: On an immediate failure, this parameter will reference
2628 * the work request that failed to be posted on the QP.
2630 static inline int ib_post_recv(struct ib_qp *qp,
2631 struct ib_recv_wr *recv_wr,
2632 struct ib_recv_wr **bad_recv_wr)
2634 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
2637 struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private,
2638 int nr_cqe, int comp_vector, enum ib_poll_context poll_ctx);
2639 void ib_free_cq(struct ib_cq *cq);
2640 int ib_process_cq_direct(struct ib_cq *cq, int budget);
2643 * ib_create_cq - Creates a CQ on the specified device.
2644 * @device: The device on which to create the CQ.
2645 * @comp_handler: A user-specified callback that is invoked when a
2646 * completion event occurs on the CQ.
2647 * @event_handler: A user-specified callback that is invoked when an
2648 * asynchronous event not associated with a completion occurs on the CQ.
2649 * @cq_context: Context associated with the CQ returned to the user via
2650 * the associated completion and event handlers.
2651 * @cq_attr: The attributes the CQ should be created upon.
2653 * Users can examine the cq structure to determine the actual CQ size.
2655 struct ib_cq *ib_create_cq(struct ib_device *device,
2656 ib_comp_handler comp_handler,
2657 void (*event_handler)(struct ib_event *, void *),
2659 const struct ib_cq_init_attr *cq_attr);
2662 * ib_resize_cq - Modifies the capacity of the CQ.
2663 * @cq: The CQ to resize.
2664 * @cqe: The minimum size of the CQ.
2666 * Users can examine the cq structure to determine the actual CQ size.
2668 int ib_resize_cq(struct ib_cq *cq, int cqe);
2671 * ib_modify_cq - Modifies moderation params of the CQ
2672 * @cq: The CQ to modify.
2673 * @cq_count: number of CQEs that will trigger an event
2674 * @cq_period: max period of time in usec before triggering an event
2677 int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
2680 * ib_destroy_cq - Destroys the specified CQ.
2681 * @cq: The CQ to destroy.
2683 int ib_destroy_cq(struct ib_cq *cq);
2686 * ib_poll_cq - poll a CQ for completion(s)
2687 * @cq:the CQ being polled
2688 * @num_entries:maximum number of completions to return
2689 * @wc:array of at least @num_entries &struct ib_wc where completions
2692 * Poll a CQ for (possibly multiple) completions. If the return value
2693 * is < 0, an error occurred. If the return value is >= 0, it is the
2694 * number of completions returned. If the return value is
2695 * non-negative and < num_entries, then the CQ was emptied.
2697 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
2700 return cq->device->poll_cq(cq, num_entries, wc);
2704 * ib_peek_cq - Returns the number of unreaped completions currently
2705 * on the specified CQ.
2706 * @cq: The CQ to peek.
2707 * @wc_cnt: A minimum number of unreaped completions to check for.
2709 * If the number of unreaped completions is greater than or equal to wc_cnt,
2710 * this function returns wc_cnt, otherwise, it returns the actual number of
2711 * unreaped completions.
2713 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
2716 * ib_req_notify_cq - Request completion notification on a CQ.
2717 * @cq: The CQ to generate an event for.
2719 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
2720 * to request an event on the next solicited event or next work
2721 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
2722 * may also be |ed in to request a hint about missed events, as
2726 * < 0 means an error occurred while requesting notification
2727 * == 0 means notification was requested successfully, and if
2728 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
2729 * were missed and it is safe to wait for another event. In
2730 * this case is it guaranteed that any work completions added
2731 * to the CQ since the last CQ poll will trigger a completion
2732 * notification event.
2733 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
2734 * in. It means that the consumer must poll the CQ again to
2735 * make sure it is empty to avoid missing an event because of a
2736 * race between requesting notification and an entry being
2737 * added to the CQ. This return value means it is possible
2738 * (but not guaranteed) that a work completion has been added
2739 * to the CQ since the last poll without triggering a
2740 * completion notification event.
2742 static inline int ib_req_notify_cq(struct ib_cq *cq,
2743 enum ib_cq_notify_flags flags)
2745 return cq->device->req_notify_cq(cq, flags);
2749 * ib_req_ncomp_notif - Request completion notification when there are
2750 * at least the specified number of unreaped completions on the CQ.
2751 * @cq: The CQ to generate an event for.
2752 * @wc_cnt: The number of unreaped completions that should be on the
2753 * CQ before an event is generated.
2755 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
2757 return cq->device->req_ncomp_notif ?
2758 cq->device->req_ncomp_notif(cq, wc_cnt) :
2763 * ib_get_dma_mr - Returns a memory region for system memory that is
2765 * @pd: The protection domain associated with the memory region.
2766 * @mr_access_flags: Specifies the memory access rights.
2768 * Note that the ib_dma_*() functions defined below must be used
2769 * to create/destroy addresses used with the Lkey or Rkey returned
2770 * by ib_get_dma_mr().
2772 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
2775 * ib_dma_mapping_error - check a DMA addr for error
2776 * @dev: The device for which the dma_addr was created
2777 * @dma_addr: The DMA address to check
2779 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
2782 return dev->dma_ops->mapping_error(dev, dma_addr);
2783 return dma_mapping_error(dev->dma_device, dma_addr);
2787 * ib_dma_map_single - Map a kernel virtual address to DMA address
2788 * @dev: The device for which the dma_addr is to be created
2789 * @cpu_addr: The kernel virtual address
2790 * @size: The size of the region in bytes
2791 * @direction: The direction of the DMA
2793 static inline u64 ib_dma_map_single(struct ib_device *dev,
2794 void *cpu_addr, size_t size,
2795 enum dma_data_direction direction)
2798 return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
2799 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
2803 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
2804 * @dev: The device for which the DMA address was created
2805 * @addr: The DMA address
2806 * @size: The size of the region in bytes
2807 * @direction: The direction of the DMA
2809 static inline void ib_dma_unmap_single(struct ib_device *dev,
2810 u64 addr, size_t size,
2811 enum dma_data_direction direction)
2814 dev->dma_ops->unmap_single(dev, addr, size, direction);
2816 dma_unmap_single(dev->dma_device, addr, size, direction);
2819 static inline u64 ib_dma_map_single_attrs(struct ib_device *dev,
2820 void *cpu_addr, size_t size,
2821 enum dma_data_direction direction,
2822 unsigned long dma_attrs)
2824 return dma_map_single_attrs(dev->dma_device, cpu_addr, size,
2825 direction, dma_attrs);
2828 static inline void ib_dma_unmap_single_attrs(struct ib_device *dev,
2829 u64 addr, size_t size,
2830 enum dma_data_direction direction,
2831 unsigned long dma_attrs)
2833 return dma_unmap_single_attrs(dev->dma_device, addr, size,
2834 direction, dma_attrs);
2838 * ib_dma_map_page - Map a physical page to DMA address
2839 * @dev: The device for which the dma_addr is to be created
2840 * @page: The page to be mapped
2841 * @offset: The offset within the page
2842 * @size: The size of the region in bytes
2843 * @direction: The direction of the DMA
2845 static inline u64 ib_dma_map_page(struct ib_device *dev,
2847 unsigned long offset,
2849 enum dma_data_direction direction)
2852 return dev->dma_ops->map_page(dev, page, offset, size, direction);
2853 return dma_map_page(dev->dma_device, page, offset, size, direction);
2857 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
2858 * @dev: The device for which the DMA address was created
2859 * @addr: The DMA address
2860 * @size: The size of the region in bytes
2861 * @direction: The direction of the DMA
2863 static inline void ib_dma_unmap_page(struct ib_device *dev,
2864 u64 addr, size_t size,
2865 enum dma_data_direction direction)
2868 dev->dma_ops->unmap_page(dev, addr, size, direction);
2870 dma_unmap_page(dev->dma_device, addr, size, direction);
2874 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
2875 * @dev: The device for which the DMA addresses are to be created
2876 * @sg: The array of scatter/gather entries
2877 * @nents: The number of scatter/gather entries
2878 * @direction: The direction of the DMA
2880 static inline int ib_dma_map_sg(struct ib_device *dev,
2881 struct scatterlist *sg, int nents,
2882 enum dma_data_direction direction)
2885 return dev->dma_ops->map_sg(dev, sg, nents, direction);
2886 return dma_map_sg(dev->dma_device, sg, nents, direction);
2890 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
2891 * @dev: The device for which the DMA addresses were created
2892 * @sg: The array of scatter/gather entries
2893 * @nents: The number of scatter/gather entries
2894 * @direction: The direction of the DMA
2896 static inline void ib_dma_unmap_sg(struct ib_device *dev,
2897 struct scatterlist *sg, int nents,
2898 enum dma_data_direction direction)
2901 dev->dma_ops->unmap_sg(dev, sg, nents, direction);
2903 dma_unmap_sg(dev->dma_device, sg, nents, direction);
2906 static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
2907 struct scatterlist *sg, int nents,
2908 enum dma_data_direction direction,
2909 unsigned long dma_attrs)
2911 return dma_map_sg_attrs(dev->dma_device, sg, nents, direction,
2915 static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
2916 struct scatterlist *sg, int nents,
2917 enum dma_data_direction direction,
2918 unsigned long dma_attrs)
2920 dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, dma_attrs);
2923 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
2924 * @dev: The device for which the DMA addresses were created
2925 * @sg: The scatter/gather entry
2927 * Note: this function is obsolete. To do: change all occurrences of
2928 * ib_sg_dma_address() into sg_dma_address().
2930 static inline u64 ib_sg_dma_address(struct ib_device *dev,
2931 struct scatterlist *sg)
2933 return sg_dma_address(sg);
2937 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
2938 * @dev: The device for which the DMA addresses were created
2939 * @sg: The scatter/gather entry
2941 * Note: this function is obsolete. To do: change all occurrences of
2942 * ib_sg_dma_len() into sg_dma_len().
2944 static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
2945 struct scatterlist *sg)
2947 return sg_dma_len(sg);
2951 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
2952 * @dev: The device for which the DMA address was created
2953 * @addr: The DMA address
2954 * @size: The size of the region in bytes
2955 * @dir: The direction of the DMA
2957 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
2960 enum dma_data_direction dir)
2963 dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
2965 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
2969 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
2970 * @dev: The device for which the DMA address was created
2971 * @addr: The DMA address
2972 * @size: The size of the region in bytes
2973 * @dir: The direction of the DMA
2975 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
2978 enum dma_data_direction dir)
2981 dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
2983 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
2987 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
2988 * @dev: The device for which the DMA address is requested
2989 * @size: The size of the region to allocate in bytes
2990 * @dma_handle: A pointer for returning the DMA address of the region
2991 * @flag: memory allocator flags
2993 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
2999 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
3004 ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
3005 *dma_handle = handle;
3011 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
3012 * @dev: The device for which the DMA addresses were allocated
3013 * @size: The size of the region
3014 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
3015 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
3017 static inline void ib_dma_free_coherent(struct ib_device *dev,
3018 size_t size, void *cpu_addr,
3022 dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
3024 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
3028 * ib_dereg_mr - Deregisters a memory region and removes it from the
3029 * HCA translation table.
3030 * @mr: The memory region to deregister.
3032 * This function can fail, if the memory region has memory windows bound to it.
3034 int ib_dereg_mr(struct ib_mr *mr);
3036 struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
3037 enum ib_mr_type mr_type,
3041 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
3043 * @mr - struct ib_mr pointer to be updated.
3044 * @newkey - new key to be used.
3046 static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey)
3048 mr->lkey = (mr->lkey & 0xffffff00) | newkey;
3049 mr->rkey = (mr->rkey & 0xffffff00) | newkey;
3053 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
3054 * for calculating a new rkey for type 2 memory windows.
3055 * @rkey - the rkey to increment.
3057 static inline u32 ib_inc_rkey(u32 rkey)
3059 const u32 mask = 0x000000ff;
3060 return ((rkey + 1) & mask) | (rkey & ~mask);
3064 * ib_alloc_fmr - Allocates a unmapped fast memory region.
3065 * @pd: The protection domain associated with the unmapped region.
3066 * @mr_access_flags: Specifies the memory access rights.
3067 * @fmr_attr: Attributes of the unmapped region.
3069 * A fast memory region must be mapped before it can be used as part of
3072 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
3073 int mr_access_flags,
3074 struct ib_fmr_attr *fmr_attr);
3077 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
3078 * @fmr: The fast memory region to associate with the pages.
3079 * @page_list: An array of physical pages to map to the fast memory region.
3080 * @list_len: The number of pages in page_list.
3081 * @iova: The I/O virtual address to use with the mapped region.
3083 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
3084 u64 *page_list, int list_len,
3087 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
3091 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
3092 * @fmr_list: A linked list of fast memory regions to unmap.
3094 int ib_unmap_fmr(struct list_head *fmr_list);
3097 * ib_dealloc_fmr - Deallocates a fast memory region.
3098 * @fmr: The fast memory region to deallocate.
3100 int ib_dealloc_fmr(struct ib_fmr *fmr);
3103 * ib_attach_mcast - Attaches the specified QP to a multicast group.
3104 * @qp: QP to attach to the multicast group. The QP must be type
3106 * @gid: Multicast group GID.
3107 * @lid: Multicast group LID in host byte order.
3109 * In order to send and receive multicast packets, subnet
3110 * administration must have created the multicast group and configured
3111 * the fabric appropriately. The port associated with the specified
3112 * QP must also be a member of the multicast group.
3114 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
3117 * ib_detach_mcast - Detaches the specified QP from a multicast group.
3118 * @qp: QP to detach from the multicast group.
3119 * @gid: Multicast group GID.
3120 * @lid: Multicast group LID in host byte order.
3122 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
3125 * ib_alloc_xrcd - Allocates an XRC domain.
3126 * @device: The device on which to allocate the XRC domain.
3128 struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device);
3131 * ib_dealloc_xrcd - Deallocates an XRC domain.
3132 * @xrcd: The XRC domain to deallocate.
3134 int ib_dealloc_xrcd(struct ib_xrcd *xrcd);
3136 struct ib_flow *ib_create_flow(struct ib_qp *qp,
3137 struct ib_flow_attr *flow_attr, int domain);
3138 int ib_destroy_flow(struct ib_flow *flow_id);
3140 static inline int ib_check_mr_access(int flags)
3143 * Local write permission is required if remote write or
3144 * remote atomic permission is also requested.
3146 if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
3147 !(flags & IB_ACCESS_LOCAL_WRITE))
3154 * ib_check_mr_status: lightweight check of MR status.
3155 * This routine may provide status checks on a selected
3156 * ib_mr. first use is for signature status check.
3158 * @mr: A memory region.
3159 * @check_mask: Bitmask of which checks to perform from
3160 * ib_mr_status_check enumeration.
3161 * @mr_status: The container of relevant status checks.
3162 * failed checks will be indicated in the status bitmask
3163 * and the relevant info shall be in the error item.
3165 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
3166 struct ib_mr_status *mr_status);
3168 struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port,
3169 u16 pkey, const union ib_gid *gid,
3170 const struct sockaddr *addr);
3172 int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
3173 unsigned int *sg_offset, unsigned int page_size);
3176 ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
3177 unsigned int *sg_offset, unsigned int page_size)
3181 n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size);
3187 int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents,
3188 unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64));
3190 void ib_drain_rq(struct ib_qp *qp);
3191 void ib_drain_sq(struct ib_qp *qp);
3192 void ib_drain_qp(struct ib_qp *qp);
3193 #endif /* IB_VERBS_H */