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/atomic.h>
60 #include <linux/mmu_notifier.h>
61 #include <asm/uaccess.h>
63 extern struct workqueue_struct
*ib_wq
;
64 extern struct workqueue_struct
*ib_comp_wq
;
74 extern union ib_gid zgid
;
77 /* If link layer is Ethernet, this is RoCE V1 */
80 IB_GID_TYPE_ROCE_UDP_ENCAP
= 1,
84 #define ROCE_V2_UDP_DPORT 4791
86 enum ib_gid_type gid_type
;
87 struct net_device
*ndev
;
91 /* IB values map to NodeInfo:NodeType. */
100 enum rdma_transport_type
{
102 RDMA_TRANSPORT_IWARP
,
103 RDMA_TRANSPORT_USNIC
,
104 RDMA_TRANSPORT_USNIC_UDP
107 enum rdma_protocol_type
{
111 RDMA_PROTOCOL_USNIC_UDP
114 __attribute_const__
enum rdma_transport_type
115 rdma_node_get_transport(enum rdma_node_type node_type
);
117 enum rdma_network_type
{
119 RDMA_NETWORK_ROCE_V1
= RDMA_NETWORK_IB
,
124 static inline enum ib_gid_type
ib_network_to_gid_type(enum rdma_network_type network_type
)
126 if (network_type
== RDMA_NETWORK_IPV4
||
127 network_type
== RDMA_NETWORK_IPV6
)
128 return IB_GID_TYPE_ROCE_UDP_ENCAP
;
130 /* IB_GID_TYPE_IB same as RDMA_NETWORK_ROCE_V1 */
131 return IB_GID_TYPE_IB
;
134 static inline enum rdma_network_type
ib_gid_to_network_type(enum ib_gid_type gid_type
,
137 if (gid_type
== IB_GID_TYPE_IB
)
138 return RDMA_NETWORK_IB
;
140 if (ipv6_addr_v4mapped((struct in6_addr
*)gid
))
141 return RDMA_NETWORK_IPV4
;
143 return RDMA_NETWORK_IPV6
;
146 enum rdma_link_layer
{
147 IB_LINK_LAYER_UNSPECIFIED
,
148 IB_LINK_LAYER_INFINIBAND
,
149 IB_LINK_LAYER_ETHERNET
,
152 enum ib_device_cap_flags
{
153 IB_DEVICE_RESIZE_MAX_WR
= (1 << 0),
154 IB_DEVICE_BAD_PKEY_CNTR
= (1 << 1),
155 IB_DEVICE_BAD_QKEY_CNTR
= (1 << 2),
156 IB_DEVICE_RAW_MULTI
= (1 << 3),
157 IB_DEVICE_AUTO_PATH_MIG
= (1 << 4),
158 IB_DEVICE_CHANGE_PHY_PORT
= (1 << 5),
159 IB_DEVICE_UD_AV_PORT_ENFORCE
= (1 << 6),
160 IB_DEVICE_CURR_QP_STATE_MOD
= (1 << 7),
161 IB_DEVICE_SHUTDOWN_PORT
= (1 << 8),
162 IB_DEVICE_INIT_TYPE
= (1 << 9),
163 IB_DEVICE_PORT_ACTIVE_EVENT
= (1 << 10),
164 IB_DEVICE_SYS_IMAGE_GUID
= (1 << 11),
165 IB_DEVICE_RC_RNR_NAK_GEN
= (1 << 12),
166 IB_DEVICE_SRQ_RESIZE
= (1 << 13),
167 IB_DEVICE_N_NOTIFY_CQ
= (1 << 14),
170 * This device supports a per-device lkey or stag that can be
171 * used without performing a memory registration for the local
172 * memory. Note that ULPs should never check this flag, but
173 * instead of use the local_dma_lkey flag in the ib_pd structure,
174 * which will always contain a usable lkey.
176 IB_DEVICE_LOCAL_DMA_LKEY
= (1 << 15),
177 IB_DEVICE_RESERVED
/* old SEND_W_INV */ = (1 << 16),
178 IB_DEVICE_MEM_WINDOW
= (1 << 17),
180 * Devices should set IB_DEVICE_UD_IP_SUM if they support
181 * insertion of UDP and TCP checksum on outgoing UD IPoIB
182 * messages and can verify the validity of checksum for
183 * incoming messages. Setting this flag implies that the
184 * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
186 IB_DEVICE_UD_IP_CSUM
= (1 << 18),
187 IB_DEVICE_UD_TSO
= (1 << 19),
188 IB_DEVICE_XRC
= (1 << 20),
191 * This device supports the IB "base memory management extension",
192 * which includes support for fast registrations (IB_WR_REG_MR,
193 * IB_WR_LOCAL_INV and IB_WR_SEND_WITH_INV verbs). This flag should
194 * also be set by any iWarp device which must support FRs to comply
195 * to the iWarp verbs spec. iWarp devices also support the
196 * IB_WR_RDMA_READ_WITH_INV verb for RDMA READs that invalidate the
199 IB_DEVICE_MEM_MGT_EXTENSIONS
= (1 << 21),
200 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK
= (1 << 22),
201 IB_DEVICE_MEM_WINDOW_TYPE_2A
= (1 << 23),
202 IB_DEVICE_MEM_WINDOW_TYPE_2B
= (1 << 24),
203 IB_DEVICE_RC_IP_CSUM
= (1 << 25),
204 IB_DEVICE_RAW_IP_CSUM
= (1 << 26),
206 * Devices should set IB_DEVICE_CROSS_CHANNEL if they
207 * support execution of WQEs that involve synchronization
208 * of I/O operations with single completion queue managed
211 IB_DEVICE_CROSS_CHANNEL
= (1 << 27),
212 IB_DEVICE_MANAGED_FLOW_STEERING
= (1 << 29),
213 IB_DEVICE_SIGNATURE_HANDOVER
= (1 << 30),
214 IB_DEVICE_ON_DEMAND_PAGING
= (1 << 31),
215 IB_DEVICE_SG_GAPS_REG
= (1ULL << 32),
218 enum ib_signature_prot_cap
{
219 IB_PROT_T10DIF_TYPE_1
= 1,
220 IB_PROT_T10DIF_TYPE_2
= 1 << 1,
221 IB_PROT_T10DIF_TYPE_3
= 1 << 2,
224 enum ib_signature_guard_cap
{
225 IB_GUARD_T10DIF_CRC
= 1,
226 IB_GUARD_T10DIF_CSUM
= 1 << 1,
235 enum ib_odp_general_cap_bits
{
236 IB_ODP_SUPPORT
= 1 << 0,
239 enum ib_odp_transport_cap_bits
{
240 IB_ODP_SUPPORT_SEND
= 1 << 0,
241 IB_ODP_SUPPORT_RECV
= 1 << 1,
242 IB_ODP_SUPPORT_WRITE
= 1 << 2,
243 IB_ODP_SUPPORT_READ
= 1 << 3,
244 IB_ODP_SUPPORT_ATOMIC
= 1 << 4,
248 uint64_t general_caps
;
250 uint32_t rc_odp_caps
;
251 uint32_t uc_odp_caps
;
252 uint32_t ud_odp_caps
;
253 } per_transport_caps
;
256 enum ib_cq_creation_flags
{
257 IB_CQ_FLAGS_TIMESTAMP_COMPLETION
= 1 << 0,
258 IB_CQ_FLAGS_IGNORE_OVERRUN
= 1 << 1,
261 struct ib_cq_init_attr
{
267 struct ib_device_attr
{
269 __be64 sys_image_guid
;
277 u64 device_cap_flags
;
287 int max_qp_init_rd_atom
;
288 int max_ee_init_rd_atom
;
289 enum ib_atomic_cap atomic_cap
;
290 enum ib_atomic_cap masked_atomic_cap
;
297 int max_mcast_qp_attach
;
298 int max_total_mcast_qp_attach
;
305 unsigned int max_fast_reg_page_list_len
;
307 u8 local_ca_ack_delay
;
310 struct ib_odp_caps odp_caps
;
311 uint64_t timestamp_mask
;
312 uint64_t hca_core_clock
; /* in KHZ */
323 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu
)
326 case IB_MTU_256
: return 256;
327 case IB_MTU_512
: return 512;
328 case IB_MTU_1024
: return 1024;
329 case IB_MTU_2048
: return 2048;
330 case IB_MTU_4096
: return 4096;
341 IB_PORT_ACTIVE_DEFER
= 5
344 enum ib_port_cap_flags
{
346 IB_PORT_NOTICE_SUP
= 1 << 2,
347 IB_PORT_TRAP_SUP
= 1 << 3,
348 IB_PORT_OPT_IPD_SUP
= 1 << 4,
349 IB_PORT_AUTO_MIGR_SUP
= 1 << 5,
350 IB_PORT_SL_MAP_SUP
= 1 << 6,
351 IB_PORT_MKEY_NVRAM
= 1 << 7,
352 IB_PORT_PKEY_NVRAM
= 1 << 8,
353 IB_PORT_LED_INFO_SUP
= 1 << 9,
354 IB_PORT_SM_DISABLED
= 1 << 10,
355 IB_PORT_SYS_IMAGE_GUID_SUP
= 1 << 11,
356 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP
= 1 << 12,
357 IB_PORT_EXTENDED_SPEEDS_SUP
= 1 << 14,
358 IB_PORT_CM_SUP
= 1 << 16,
359 IB_PORT_SNMP_TUNNEL_SUP
= 1 << 17,
360 IB_PORT_REINIT_SUP
= 1 << 18,
361 IB_PORT_DEVICE_MGMT_SUP
= 1 << 19,
362 IB_PORT_VENDOR_CLASS_SUP
= 1 << 20,
363 IB_PORT_DR_NOTICE_SUP
= 1 << 21,
364 IB_PORT_CAP_MASK_NOTICE_SUP
= 1 << 22,
365 IB_PORT_BOOT_MGMT_SUP
= 1 << 23,
366 IB_PORT_LINK_LATENCY_SUP
= 1 << 24,
367 IB_PORT_CLIENT_REG_SUP
= 1 << 25,
368 IB_PORT_IP_BASED_GIDS
= 1 << 26,
378 static inline int ib_width_enum_to_int(enum ib_port_width width
)
381 case IB_WIDTH_1X
: return 1;
382 case IB_WIDTH_4X
: return 4;
383 case IB_WIDTH_8X
: return 8;
384 case IB_WIDTH_12X
: return 12;
398 struct ib_protocol_stats
{
402 struct iw_protocol_stats
{
405 u64 ipInTooBigErrors
;
408 u64 ipInUnknownProtos
;
409 u64 ipInTruncatedPkts
;
412 u64 ipOutForwDatagrams
;
444 union rdma_protocol_stats
{
445 struct ib_protocol_stats ib
;
446 struct iw_protocol_stats iw
;
449 /* Define bits for the various functionality this port needs to be supported by
452 /* Management 0x00000FFF */
453 #define RDMA_CORE_CAP_IB_MAD 0x00000001
454 #define RDMA_CORE_CAP_IB_SMI 0x00000002
455 #define RDMA_CORE_CAP_IB_CM 0x00000004
456 #define RDMA_CORE_CAP_IW_CM 0x00000008
457 #define RDMA_CORE_CAP_IB_SA 0x00000010
458 #define RDMA_CORE_CAP_OPA_MAD 0x00000020
460 /* Address format 0x000FF000 */
461 #define RDMA_CORE_CAP_AF_IB 0x00001000
462 #define RDMA_CORE_CAP_ETH_AH 0x00002000
464 /* Protocol 0xFFF00000 */
465 #define RDMA_CORE_CAP_PROT_IB 0x00100000
466 #define RDMA_CORE_CAP_PROT_ROCE 0x00200000
467 #define RDMA_CORE_CAP_PROT_IWARP 0x00400000
468 #define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000
470 #define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \
471 | RDMA_CORE_CAP_IB_MAD \
472 | RDMA_CORE_CAP_IB_SMI \
473 | RDMA_CORE_CAP_IB_CM \
474 | RDMA_CORE_CAP_IB_SA \
475 | RDMA_CORE_CAP_AF_IB)
476 #define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \
477 | RDMA_CORE_CAP_IB_MAD \
478 | RDMA_CORE_CAP_IB_CM \
479 | RDMA_CORE_CAP_AF_IB \
480 | RDMA_CORE_CAP_ETH_AH)
481 #define RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP \
482 (RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP \
483 | RDMA_CORE_CAP_IB_MAD \
484 | RDMA_CORE_CAP_IB_CM \
485 | RDMA_CORE_CAP_AF_IB \
486 | RDMA_CORE_CAP_ETH_AH)
487 #define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \
488 | RDMA_CORE_CAP_IW_CM)
489 #define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \
490 | RDMA_CORE_CAP_OPA_MAD)
492 struct ib_port_attr
{
494 enum ib_port_state state
;
496 enum ib_mtu active_mtu
;
515 enum ib_device_modify_flags
{
516 IB_DEVICE_MODIFY_SYS_IMAGE_GUID
= 1 << 0,
517 IB_DEVICE_MODIFY_NODE_DESC
= 1 << 1
520 struct ib_device_modify
{
525 enum ib_port_modify_flags
{
526 IB_PORT_SHUTDOWN
= 1,
527 IB_PORT_INIT_TYPE
= (1<<2),
528 IB_PORT_RESET_QKEY_CNTR
= (1<<3)
531 struct ib_port_modify
{
532 u32 set_port_cap_mask
;
533 u32 clr_port_cap_mask
;
541 IB_EVENT_QP_ACCESS_ERR
,
545 IB_EVENT_PATH_MIG_ERR
,
546 IB_EVENT_DEVICE_FATAL
,
547 IB_EVENT_PORT_ACTIVE
,
550 IB_EVENT_PKEY_CHANGE
,
553 IB_EVENT_SRQ_LIMIT_REACHED
,
554 IB_EVENT_QP_LAST_WQE_REACHED
,
555 IB_EVENT_CLIENT_REREGISTER
,
559 const char *__attribute_const__
ib_event_msg(enum ib_event_type event
);
562 struct ib_device
*device
;
569 enum ib_event_type event
;
572 struct ib_event_handler
{
573 struct ib_device
*device
;
574 void (*handler
)(struct ib_event_handler
*, struct ib_event
*);
575 struct list_head list
;
578 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
580 (_ptr)->device = _device; \
581 (_ptr)->handler = _handler; \
582 INIT_LIST_HEAD(&(_ptr)->list); \
585 struct ib_global_route
{
594 __be32 version_tclass_flow
;
602 union rdma_network_hdr
{
605 /* The IB spec states that if it's IPv4, the header
606 * is located in the last 20 bytes of the header.
609 struct iphdr roce4grh
;
614 IB_MULTICAST_QPN
= 0xffffff
617 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
624 IB_RATE_PORT_CURRENT
= 0,
625 IB_RATE_2_5_GBPS
= 2,
633 IB_RATE_120_GBPS
= 10,
634 IB_RATE_14_GBPS
= 11,
635 IB_RATE_56_GBPS
= 12,
636 IB_RATE_112_GBPS
= 13,
637 IB_RATE_168_GBPS
= 14,
638 IB_RATE_25_GBPS
= 15,
639 IB_RATE_100_GBPS
= 16,
640 IB_RATE_200_GBPS
= 17,
641 IB_RATE_300_GBPS
= 18
645 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
646 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
647 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
648 * @rate: rate to convert.
650 __attribute_const__
int ib_rate_to_mult(enum ib_rate rate
);
653 * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
654 * For example, IB_RATE_2_5_GBPS will be converted to 2500.
655 * @rate: rate to convert.
657 __attribute_const__
int ib_rate_to_mbps(enum ib_rate rate
);
661 * enum ib_mr_type - memory region type
662 * @IB_MR_TYPE_MEM_REG: memory region that is used for
663 * normal registration
664 * @IB_MR_TYPE_SIGNATURE: memory region that is used for
665 * signature operations (data-integrity
667 * @IB_MR_TYPE_SG_GAPS: memory region that is capable to
668 * register any arbitrary sg lists (without
669 * the normal mr constraints - see
674 IB_MR_TYPE_SIGNATURE
,
680 * IB_SIG_TYPE_NONE: Unprotected.
681 * IB_SIG_TYPE_T10_DIF: Type T10-DIF
683 enum ib_signature_type
{
689 * Signature T10-DIF block-guard types
690 * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules.
691 * IB_T10DIF_CSUM: Corresponds to IP checksum rules.
693 enum ib_t10_dif_bg_type
{
699 * struct ib_t10_dif_domain - Parameters specific for T10-DIF
701 * @bg_type: T10-DIF block guard type (CRC|CSUM)
702 * @pi_interval: protection information interval.
703 * @bg: seed of guard computation.
704 * @app_tag: application tag of guard block
705 * @ref_tag: initial guard block reference tag.
706 * @ref_remap: Indicate wethear the reftag increments each block
707 * @app_escape: Indicate to skip block check if apptag=0xffff
708 * @ref_escape: Indicate to skip block check if reftag=0xffffffff
709 * @apptag_check_mask: check bitmask of application tag.
711 struct ib_t10_dif_domain
{
712 enum ib_t10_dif_bg_type bg_type
;
720 u16 apptag_check_mask
;
724 * struct ib_sig_domain - Parameters for signature domain
725 * @sig_type: specific signauture type
726 * @sig: union of all signature domain attributes that may
727 * be used to set domain layout.
729 struct ib_sig_domain
{
730 enum ib_signature_type sig_type
;
732 struct ib_t10_dif_domain dif
;
737 * struct ib_sig_attrs - Parameters for signature handover operation
738 * @check_mask: bitmask for signature byte check (8 bytes)
739 * @mem: memory domain layout desciptor.
740 * @wire: wire domain layout desciptor.
742 struct ib_sig_attrs
{
744 struct ib_sig_domain mem
;
745 struct ib_sig_domain wire
;
748 enum ib_sig_err_type
{
755 * struct ib_sig_err - signature error descriptor
758 enum ib_sig_err_type err_type
;
765 enum ib_mr_status_check
{
766 IB_MR_CHECK_SIG_STATUS
= 1,
770 * struct ib_mr_status - Memory region status container
772 * @fail_status: Bitmask of MR checks status. For each
773 * failed check a corresponding status bit is set.
774 * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS
777 struct ib_mr_status
{
779 struct ib_sig_err sig_err
;
783 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
785 * @mult: multiple to convert.
787 __attribute_const__
enum ib_rate
mult_to_ib_rate(int mult
);
790 struct ib_global_route grh
;
804 IB_WC_LOC_EEC_OP_ERR
,
809 IB_WC_LOC_ACCESS_ERR
,
810 IB_WC_REM_INV_REQ_ERR
,
811 IB_WC_REM_ACCESS_ERR
,
814 IB_WC_RNR_RETRY_EXC_ERR
,
815 IB_WC_LOC_RDD_VIOL_ERR
,
816 IB_WC_REM_INV_RD_REQ_ERR
,
819 IB_WC_INV_EEC_STATE_ERR
,
821 IB_WC_RESP_TIMEOUT_ERR
,
825 const char *__attribute_const__
ib_wc_status_msg(enum ib_wc_status status
);
836 IB_WC_MASKED_COMP_SWAP
,
837 IB_WC_MASKED_FETCH_ADD
,
839 * Set value of IB_WC_RECV so consumers can test if a completion is a
840 * receive by testing (opcode & IB_WC_RECV).
843 IB_WC_RECV_RDMA_WITH_IMM
848 IB_WC_WITH_IMM
= (1<<1),
849 IB_WC_WITH_INVALIDATE
= (1<<2),
850 IB_WC_IP_CSUM_OK
= (1<<3),
851 IB_WC_WITH_SMAC
= (1<<4),
852 IB_WC_WITH_VLAN
= (1<<5),
853 IB_WC_WITH_NETWORK_HDR_TYPE
= (1<<6),
859 struct ib_cqe
*wr_cqe
;
861 enum ib_wc_status status
;
862 enum ib_wc_opcode opcode
;
876 u8 port_num
; /* valid only for DR SMPs on switches */
882 enum ib_cq_notify_flags
{
883 IB_CQ_SOLICITED
= 1 << 0,
884 IB_CQ_NEXT_COMP
= 1 << 1,
885 IB_CQ_SOLICITED_MASK
= IB_CQ_SOLICITED
| IB_CQ_NEXT_COMP
,
886 IB_CQ_REPORT_MISSED_EVENTS
= 1 << 2,
894 enum ib_srq_attr_mask
{
895 IB_SRQ_MAX_WR
= 1 << 0,
896 IB_SRQ_LIMIT
= 1 << 1,
905 struct ib_srq_init_attr
{
906 void (*event_handler
)(struct ib_event
*, void *);
908 struct ib_srq_attr attr
;
909 enum ib_srq_type srq_type
;
913 struct ib_xrcd
*xrcd
;
934 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
935 * here (and in that order) since the MAD layer uses them as
936 * indices into a 2-entry table.
945 IB_QPT_RAW_ETHERTYPE
,
946 IB_QPT_RAW_PACKET
= 8,
950 /* Reserve a range for qp types internal to the low level driver.
951 * These qp types will not be visible at the IB core layer, so the
952 * IB_QPT_MAX usages should not be affected in the core layer
954 IB_QPT_RESERVED1
= 0x1000,
966 enum ib_qp_create_flags
{
967 IB_QP_CREATE_IPOIB_UD_LSO
= 1 << 0,
968 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK
= 1 << 1,
969 IB_QP_CREATE_CROSS_CHANNEL
= 1 << 2,
970 IB_QP_CREATE_MANAGED_SEND
= 1 << 3,
971 IB_QP_CREATE_MANAGED_RECV
= 1 << 4,
972 IB_QP_CREATE_NETIF_QP
= 1 << 5,
973 IB_QP_CREATE_SIGNATURE_EN
= 1 << 6,
974 IB_QP_CREATE_USE_GFP_NOIO
= 1 << 7,
975 /* reserve bits 26-31 for low level drivers' internal use */
976 IB_QP_CREATE_RESERVED_START
= 1 << 26,
977 IB_QP_CREATE_RESERVED_END
= 1 << 31,
981 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
982 * callback to destroy the passed in QP.
985 struct ib_qp_init_attr
{
986 void (*event_handler
)(struct ib_event
*, void *);
988 struct ib_cq
*send_cq
;
989 struct ib_cq
*recv_cq
;
991 struct ib_xrcd
*xrcd
; /* XRC TGT QPs only */
992 struct ib_qp_cap cap
;
993 enum ib_sig_type sq_sig_type
;
994 enum ib_qp_type qp_type
;
995 enum ib_qp_create_flags create_flags
;
996 u8 port_num
; /* special QP types only */
999 struct ib_qp_open_attr
{
1000 void (*event_handler
)(struct ib_event
*, void *);
1003 enum ib_qp_type qp_type
;
1006 enum ib_rnr_timeout
{
1007 IB_RNR_TIMER_655_36
= 0,
1008 IB_RNR_TIMER_000_01
= 1,
1009 IB_RNR_TIMER_000_02
= 2,
1010 IB_RNR_TIMER_000_03
= 3,
1011 IB_RNR_TIMER_000_04
= 4,
1012 IB_RNR_TIMER_000_06
= 5,
1013 IB_RNR_TIMER_000_08
= 6,
1014 IB_RNR_TIMER_000_12
= 7,
1015 IB_RNR_TIMER_000_16
= 8,
1016 IB_RNR_TIMER_000_24
= 9,
1017 IB_RNR_TIMER_000_32
= 10,
1018 IB_RNR_TIMER_000_48
= 11,
1019 IB_RNR_TIMER_000_64
= 12,
1020 IB_RNR_TIMER_000_96
= 13,
1021 IB_RNR_TIMER_001_28
= 14,
1022 IB_RNR_TIMER_001_92
= 15,
1023 IB_RNR_TIMER_002_56
= 16,
1024 IB_RNR_TIMER_003_84
= 17,
1025 IB_RNR_TIMER_005_12
= 18,
1026 IB_RNR_TIMER_007_68
= 19,
1027 IB_RNR_TIMER_010_24
= 20,
1028 IB_RNR_TIMER_015_36
= 21,
1029 IB_RNR_TIMER_020_48
= 22,
1030 IB_RNR_TIMER_030_72
= 23,
1031 IB_RNR_TIMER_040_96
= 24,
1032 IB_RNR_TIMER_061_44
= 25,
1033 IB_RNR_TIMER_081_92
= 26,
1034 IB_RNR_TIMER_122_88
= 27,
1035 IB_RNR_TIMER_163_84
= 28,
1036 IB_RNR_TIMER_245_76
= 29,
1037 IB_RNR_TIMER_327_68
= 30,
1038 IB_RNR_TIMER_491_52
= 31
1041 enum ib_qp_attr_mask
{
1043 IB_QP_CUR_STATE
= (1<<1),
1044 IB_QP_EN_SQD_ASYNC_NOTIFY
= (1<<2),
1045 IB_QP_ACCESS_FLAGS
= (1<<3),
1046 IB_QP_PKEY_INDEX
= (1<<4),
1047 IB_QP_PORT
= (1<<5),
1048 IB_QP_QKEY
= (1<<6),
1050 IB_QP_PATH_MTU
= (1<<8),
1051 IB_QP_TIMEOUT
= (1<<9),
1052 IB_QP_RETRY_CNT
= (1<<10),
1053 IB_QP_RNR_RETRY
= (1<<11),
1054 IB_QP_RQ_PSN
= (1<<12),
1055 IB_QP_MAX_QP_RD_ATOMIC
= (1<<13),
1056 IB_QP_ALT_PATH
= (1<<14),
1057 IB_QP_MIN_RNR_TIMER
= (1<<15),
1058 IB_QP_SQ_PSN
= (1<<16),
1059 IB_QP_MAX_DEST_RD_ATOMIC
= (1<<17),
1060 IB_QP_PATH_MIG_STATE
= (1<<18),
1061 IB_QP_CAP
= (1<<19),
1062 IB_QP_DEST_QPN
= (1<<20),
1063 IB_QP_RESERVED1
= (1<<21),
1064 IB_QP_RESERVED2
= (1<<22),
1065 IB_QP_RESERVED3
= (1<<23),
1066 IB_QP_RESERVED4
= (1<<24),
1091 enum ib_qp_state qp_state
;
1092 enum ib_qp_state cur_qp_state
;
1093 enum ib_mtu path_mtu
;
1094 enum ib_mig_state path_mig_state
;
1099 int qp_access_flags
;
1100 struct ib_qp_cap cap
;
1101 struct ib_ah_attr ah_attr
;
1102 struct ib_ah_attr alt_ah_attr
;
1105 u8 en_sqd_async_notify
;
1108 u8 max_dest_rd_atomic
;
1120 IB_WR_RDMA_WRITE_WITH_IMM
,
1122 IB_WR_SEND_WITH_IMM
,
1124 IB_WR_ATOMIC_CMP_AND_SWP
,
1125 IB_WR_ATOMIC_FETCH_AND_ADD
,
1127 IB_WR_SEND_WITH_INV
,
1128 IB_WR_RDMA_READ_WITH_INV
,
1131 IB_WR_MASKED_ATOMIC_CMP_AND_SWP
,
1132 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD
,
1134 /* reserve values for low level drivers' internal use.
1135 * These values will not be used at all in the ib core layer.
1137 IB_WR_RESERVED1
= 0xf0,
1149 enum ib_send_flags
{
1151 IB_SEND_SIGNALED
= (1<<1),
1152 IB_SEND_SOLICITED
= (1<<2),
1153 IB_SEND_INLINE
= (1<<3),
1154 IB_SEND_IP_CSUM
= (1<<4),
1156 /* reserve bits 26-31 for low level drivers' internal use */
1157 IB_SEND_RESERVED_START
= (1 << 26),
1158 IB_SEND_RESERVED_END
= (1 << 31),
1168 void (*done
)(struct ib_cq
*cq
, struct ib_wc
*wc
);
1172 struct ib_send_wr
*next
;
1175 struct ib_cqe
*wr_cqe
;
1177 struct ib_sge
*sg_list
;
1179 enum ib_wr_opcode opcode
;
1183 u32 invalidate_rkey
;
1188 struct ib_send_wr wr
;
1193 static inline struct ib_rdma_wr
*rdma_wr(struct ib_send_wr
*wr
)
1195 return container_of(wr
, struct ib_rdma_wr
, wr
);
1198 struct ib_atomic_wr
{
1199 struct ib_send_wr wr
;
1203 u64 compare_add_mask
;
1208 static inline struct ib_atomic_wr
*atomic_wr(struct ib_send_wr
*wr
)
1210 return container_of(wr
, struct ib_atomic_wr
, wr
);
1214 struct ib_send_wr wr
;
1221 u16 pkey_index
; /* valid for GSI only */
1222 u8 port_num
; /* valid for DR SMPs on switch only */
1225 static inline struct ib_ud_wr
*ud_wr(struct ib_send_wr
*wr
)
1227 return container_of(wr
, struct ib_ud_wr
, wr
);
1231 struct ib_send_wr wr
;
1237 static inline struct ib_reg_wr
*reg_wr(struct ib_send_wr
*wr
)
1239 return container_of(wr
, struct ib_reg_wr
, wr
);
1242 struct ib_sig_handover_wr
{
1243 struct ib_send_wr wr
;
1244 struct ib_sig_attrs
*sig_attrs
;
1245 struct ib_mr
*sig_mr
;
1247 struct ib_sge
*prot
;
1250 static inline struct ib_sig_handover_wr
*sig_handover_wr(struct ib_send_wr
*wr
)
1252 return container_of(wr
, struct ib_sig_handover_wr
, wr
);
1256 struct ib_recv_wr
*next
;
1259 struct ib_cqe
*wr_cqe
;
1261 struct ib_sge
*sg_list
;
1265 enum ib_access_flags
{
1266 IB_ACCESS_LOCAL_WRITE
= 1,
1267 IB_ACCESS_REMOTE_WRITE
= (1<<1),
1268 IB_ACCESS_REMOTE_READ
= (1<<2),
1269 IB_ACCESS_REMOTE_ATOMIC
= (1<<3),
1270 IB_ACCESS_MW_BIND
= (1<<4),
1271 IB_ZERO_BASED
= (1<<5),
1272 IB_ACCESS_ON_DEMAND
= (1<<6),
1276 * XXX: these are apparently used for ->rereg_user_mr, no idea why they
1277 * are hidden here instead of a uapi header!
1279 enum ib_mr_rereg_flags
{
1280 IB_MR_REREG_TRANS
= 1,
1281 IB_MR_REREG_PD
= (1<<1),
1282 IB_MR_REREG_ACCESS
= (1<<2),
1283 IB_MR_REREG_SUPPORTED
= ((IB_MR_REREG_ACCESS
<< 1) - 1)
1286 struct ib_fmr_attr
{
1294 struct ib_ucontext
{
1295 struct ib_device
*device
;
1296 struct list_head pd_list
;
1297 struct list_head mr_list
;
1298 struct list_head mw_list
;
1299 struct list_head cq_list
;
1300 struct list_head qp_list
;
1301 struct list_head srq_list
;
1302 struct list_head ah_list
;
1303 struct list_head xrcd_list
;
1304 struct list_head rule_list
;
1308 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1309 struct rb_root umem_tree
;
1311 * Protects .umem_rbroot and tree, as well as odp_mrs_count and
1312 * mmu notifiers registration.
1314 struct rw_semaphore umem_rwsem
;
1315 void (*invalidate_range
)(struct ib_umem
*umem
,
1316 unsigned long start
, unsigned long end
);
1318 struct mmu_notifier mn
;
1319 atomic_t notifier_count
;
1320 /* A list of umems that don't have private mmu notifier counters yet. */
1321 struct list_head no_private_counters
;
1327 u64 user_handle
; /* handle given to us by userspace */
1328 struct ib_ucontext
*context
; /* associated user context */
1329 void *object
; /* containing object */
1330 struct list_head list
; /* link to context's list */
1331 int id
; /* index into kernel idr */
1333 struct rw_semaphore mutex
; /* protects .live */
1334 struct rcu_head rcu
; /* kfree_rcu() overhead */
1339 const void __user
*inbuf
;
1340 void __user
*outbuf
;
1347 struct ib_device
*device
;
1348 struct ib_uobject
*uobject
;
1349 atomic_t usecnt
; /* count all resources */
1350 struct ib_mr
*local_mr
;
1354 struct ib_device
*device
;
1355 atomic_t usecnt
; /* count all exposed resources */
1356 struct inode
*inode
;
1358 struct mutex tgt_qp_mutex
;
1359 struct list_head tgt_qp_list
;
1363 struct ib_device
*device
;
1365 struct ib_uobject
*uobject
;
1368 typedef void (*ib_comp_handler
)(struct ib_cq
*cq
, void *cq_context
);
1370 enum ib_poll_context
{
1371 IB_POLL_DIRECT
, /* caller context, no hw completions */
1372 IB_POLL_SOFTIRQ
, /* poll from softirq context */
1373 IB_POLL_WORKQUEUE
, /* poll from workqueue */
1377 struct ib_device
*device
;
1378 struct ib_uobject
*uobject
;
1379 ib_comp_handler comp_handler
;
1380 void (*event_handler
)(struct ib_event
*, void *);
1383 atomic_t usecnt
; /* count number of work queues */
1384 enum ib_poll_context poll_ctx
;
1387 struct irq_poll iop
;
1388 struct work_struct work
;
1393 struct ib_device
*device
;
1395 struct ib_uobject
*uobject
;
1396 void (*event_handler
)(struct ib_event
*, void *);
1398 enum ib_srq_type srq_type
;
1403 struct ib_xrcd
*xrcd
;
1411 struct ib_device
*device
;
1413 struct ib_cq
*send_cq
;
1414 struct ib_cq
*recv_cq
;
1416 struct ib_xrcd
*xrcd
; /* XRC TGT QPs only */
1417 struct list_head xrcd_list
;
1418 /* count times opened, mcast attaches, flow attaches */
1420 struct list_head open_list
;
1421 struct ib_qp
*real_qp
;
1422 struct ib_uobject
*uobject
;
1423 void (*event_handler
)(struct ib_event
*, void *);
1426 enum ib_qp_type qp_type
;
1430 struct ib_device
*device
;
1432 struct ib_uobject
*uobject
;
1437 unsigned int page_size
;
1441 struct ib_device
*device
;
1443 struct ib_uobject
*uobject
;
1445 enum ib_mw_type type
;
1449 struct ib_device
*device
;
1451 struct list_head list
;
1456 /* Supported steering options */
1457 enum ib_flow_attr_type
{
1458 /* steering according to rule specifications */
1459 IB_FLOW_ATTR_NORMAL
= 0x0,
1460 /* default unicast and multicast rule -
1461 * receive all Eth traffic which isn't steered to any QP
1463 IB_FLOW_ATTR_ALL_DEFAULT
= 0x1,
1464 /* default multicast rule -
1465 * receive all Eth multicast traffic which isn't steered to any QP
1467 IB_FLOW_ATTR_MC_DEFAULT
= 0x2,
1468 /* sniffer rule - receive all port traffic */
1469 IB_FLOW_ATTR_SNIFFER
= 0x3
1472 /* Supported steering header types */
1473 enum ib_flow_spec_type
{
1475 IB_FLOW_SPEC_ETH
= 0x20,
1476 IB_FLOW_SPEC_IB
= 0x22,
1478 IB_FLOW_SPEC_IPV4
= 0x30,
1480 IB_FLOW_SPEC_TCP
= 0x40,
1481 IB_FLOW_SPEC_UDP
= 0x41
1483 #define IB_FLOW_SPEC_LAYER_MASK 0xF0
1484 #define IB_FLOW_SPEC_SUPPORT_LAYERS 4
1486 /* Flow steering rule priority is set according to it's domain.
1487 * Lower domain value means higher priority.
1489 enum ib_flow_domain
{
1490 IB_FLOW_DOMAIN_USER
,
1491 IB_FLOW_DOMAIN_ETHTOOL
,
1494 IB_FLOW_DOMAIN_NUM
/* Must be last */
1497 enum ib_flow_flags
{
1498 IB_FLOW_ATTR_FLAGS_DONT_TRAP
= 1UL << 1, /* Continue match, no steal */
1499 IB_FLOW_ATTR_FLAGS_RESERVED
= 1UL << 2 /* Must be last */
1502 struct ib_flow_eth_filter
{
1509 struct ib_flow_spec_eth
{
1510 enum ib_flow_spec_type type
;
1512 struct ib_flow_eth_filter val
;
1513 struct ib_flow_eth_filter mask
;
1516 struct ib_flow_ib_filter
{
1521 struct ib_flow_spec_ib
{
1522 enum ib_flow_spec_type type
;
1524 struct ib_flow_ib_filter val
;
1525 struct ib_flow_ib_filter mask
;
1528 struct ib_flow_ipv4_filter
{
1533 struct ib_flow_spec_ipv4
{
1534 enum ib_flow_spec_type type
;
1536 struct ib_flow_ipv4_filter val
;
1537 struct ib_flow_ipv4_filter mask
;
1540 struct ib_flow_tcp_udp_filter
{
1545 struct ib_flow_spec_tcp_udp
{
1546 enum ib_flow_spec_type type
;
1548 struct ib_flow_tcp_udp_filter val
;
1549 struct ib_flow_tcp_udp_filter mask
;
1552 union ib_flow_spec
{
1554 enum ib_flow_spec_type type
;
1557 struct ib_flow_spec_eth eth
;
1558 struct ib_flow_spec_ib ib
;
1559 struct ib_flow_spec_ipv4 ipv4
;
1560 struct ib_flow_spec_tcp_udp tcp_udp
;
1563 struct ib_flow_attr
{
1564 enum ib_flow_attr_type type
;
1570 /* Following are the optional layers according to user request
1571 * struct ib_flow_spec_xxx
1572 * struct ib_flow_spec_yyy
1578 struct ib_uobject
*uobject
;
1584 enum ib_process_mad_flags
{
1585 IB_MAD_IGNORE_MKEY
= 1,
1586 IB_MAD_IGNORE_BKEY
= 2,
1587 IB_MAD_IGNORE_ALL
= IB_MAD_IGNORE_MKEY
| IB_MAD_IGNORE_BKEY
1590 enum ib_mad_result
{
1591 IB_MAD_RESULT_FAILURE
= 0, /* (!SUCCESS is the important flag) */
1592 IB_MAD_RESULT_SUCCESS
= 1 << 0, /* MAD was successfully processed */
1593 IB_MAD_RESULT_REPLY
= 1 << 1, /* Reply packet needs to be sent */
1594 IB_MAD_RESULT_CONSUMED
= 1 << 2 /* Packet consumed: stop processing */
1597 #define IB_DEVICE_NAME_MAX 64
1601 struct ib_event_handler event_handler
;
1602 struct ib_pkey_cache
**pkey_cache
;
1603 struct ib_gid_table
**gid_cache
;
1607 struct ib_dma_mapping_ops
{
1608 int (*mapping_error
)(struct ib_device
*dev
,
1610 u64 (*map_single
)(struct ib_device
*dev
,
1611 void *ptr
, size_t size
,
1612 enum dma_data_direction direction
);
1613 void (*unmap_single
)(struct ib_device
*dev
,
1614 u64 addr
, size_t size
,
1615 enum dma_data_direction direction
);
1616 u64 (*map_page
)(struct ib_device
*dev
,
1617 struct page
*page
, unsigned long offset
,
1619 enum dma_data_direction direction
);
1620 void (*unmap_page
)(struct ib_device
*dev
,
1621 u64 addr
, size_t size
,
1622 enum dma_data_direction direction
);
1623 int (*map_sg
)(struct ib_device
*dev
,
1624 struct scatterlist
*sg
, int nents
,
1625 enum dma_data_direction direction
);
1626 void (*unmap_sg
)(struct ib_device
*dev
,
1627 struct scatterlist
*sg
, int nents
,
1628 enum dma_data_direction direction
);
1629 void (*sync_single_for_cpu
)(struct ib_device
*dev
,
1632 enum dma_data_direction dir
);
1633 void (*sync_single_for_device
)(struct ib_device
*dev
,
1636 enum dma_data_direction dir
);
1637 void *(*alloc_coherent
)(struct ib_device
*dev
,
1641 void (*free_coherent
)(struct ib_device
*dev
,
1642 size_t size
, void *cpu_addr
,
1648 struct ib_port_immutable
{
1656 struct device
*dma_device
;
1658 char name
[IB_DEVICE_NAME_MAX
];
1660 struct list_head event_handler_list
;
1661 spinlock_t event_handler_lock
;
1663 spinlock_t client_data_lock
;
1664 struct list_head core_list
;
1665 /* Access to the client_data_list is protected by the client_data_lock
1666 * spinlock and the lists_rwsem read-write semaphore */
1667 struct list_head client_data_list
;
1669 struct ib_cache cache
;
1671 * port_immutable is indexed by port number
1673 struct ib_port_immutable
*port_immutable
;
1675 int num_comp_vectors
;
1677 struct iw_cm_verbs
*iwcm
;
1679 int (*get_protocol_stats
)(struct ib_device
*device
,
1680 union rdma_protocol_stats
*stats
);
1681 int (*query_device
)(struct ib_device
*device
,
1682 struct ib_device_attr
*device_attr
,
1683 struct ib_udata
*udata
);
1684 int (*query_port
)(struct ib_device
*device
,
1686 struct ib_port_attr
*port_attr
);
1687 enum rdma_link_layer (*get_link_layer
)(struct ib_device
*device
,
1689 /* When calling get_netdev, the HW vendor's driver should return the
1690 * net device of device @device at port @port_num or NULL if such
1691 * a net device doesn't exist. The vendor driver should call dev_hold
1692 * on this net device. The HW vendor's device driver must guarantee
1693 * that this function returns NULL before the net device reaches
1694 * NETDEV_UNREGISTER_FINAL state.
1696 struct net_device
*(*get_netdev
)(struct ib_device
*device
,
1698 int (*query_gid
)(struct ib_device
*device
,
1699 u8 port_num
, int index
,
1701 /* When calling add_gid, the HW vendor's driver should
1702 * add the gid of device @device at gid index @index of
1703 * port @port_num to be @gid. Meta-info of that gid (for example,
1704 * the network device related to this gid is available
1705 * at @attr. @context allows the HW vendor driver to store extra
1706 * information together with a GID entry. The HW vendor may allocate
1707 * memory to contain this information and store it in @context when a
1708 * new GID entry is written to. Params are consistent until the next
1709 * call of add_gid or delete_gid. The function should return 0 on
1710 * success or error otherwise. The function could be called
1711 * concurrently for different ports. This function is only called
1712 * when roce_gid_table is used.
1714 int (*add_gid
)(struct ib_device
*device
,
1717 const union ib_gid
*gid
,
1718 const struct ib_gid_attr
*attr
,
1720 /* When calling del_gid, the HW vendor's driver should delete the
1721 * gid of device @device at gid index @index of port @port_num.
1722 * Upon the deletion of a GID entry, the HW vendor must free any
1723 * allocated memory. The caller will clear @context afterwards.
1724 * This function is only called when roce_gid_table is used.
1726 int (*del_gid
)(struct ib_device
*device
,
1730 int (*query_pkey
)(struct ib_device
*device
,
1731 u8 port_num
, u16 index
, u16
*pkey
);
1732 int (*modify_device
)(struct ib_device
*device
,
1733 int device_modify_mask
,
1734 struct ib_device_modify
*device_modify
);
1735 int (*modify_port
)(struct ib_device
*device
,
1736 u8 port_num
, int port_modify_mask
,
1737 struct ib_port_modify
*port_modify
);
1738 struct ib_ucontext
* (*alloc_ucontext
)(struct ib_device
*device
,
1739 struct ib_udata
*udata
);
1740 int (*dealloc_ucontext
)(struct ib_ucontext
*context
);
1741 int (*mmap
)(struct ib_ucontext
*context
,
1742 struct vm_area_struct
*vma
);
1743 struct ib_pd
* (*alloc_pd
)(struct ib_device
*device
,
1744 struct ib_ucontext
*context
,
1745 struct ib_udata
*udata
);
1746 int (*dealloc_pd
)(struct ib_pd
*pd
);
1747 struct ib_ah
* (*create_ah
)(struct ib_pd
*pd
,
1748 struct ib_ah_attr
*ah_attr
);
1749 int (*modify_ah
)(struct ib_ah
*ah
,
1750 struct ib_ah_attr
*ah_attr
);
1751 int (*query_ah
)(struct ib_ah
*ah
,
1752 struct ib_ah_attr
*ah_attr
);
1753 int (*destroy_ah
)(struct ib_ah
*ah
);
1754 struct ib_srq
* (*create_srq
)(struct ib_pd
*pd
,
1755 struct ib_srq_init_attr
*srq_init_attr
,
1756 struct ib_udata
*udata
);
1757 int (*modify_srq
)(struct ib_srq
*srq
,
1758 struct ib_srq_attr
*srq_attr
,
1759 enum ib_srq_attr_mask srq_attr_mask
,
1760 struct ib_udata
*udata
);
1761 int (*query_srq
)(struct ib_srq
*srq
,
1762 struct ib_srq_attr
*srq_attr
);
1763 int (*destroy_srq
)(struct ib_srq
*srq
);
1764 int (*post_srq_recv
)(struct ib_srq
*srq
,
1765 struct ib_recv_wr
*recv_wr
,
1766 struct ib_recv_wr
**bad_recv_wr
);
1767 struct ib_qp
* (*create_qp
)(struct ib_pd
*pd
,
1768 struct ib_qp_init_attr
*qp_init_attr
,
1769 struct ib_udata
*udata
);
1770 int (*modify_qp
)(struct ib_qp
*qp
,
1771 struct ib_qp_attr
*qp_attr
,
1773 struct ib_udata
*udata
);
1774 int (*query_qp
)(struct ib_qp
*qp
,
1775 struct ib_qp_attr
*qp_attr
,
1777 struct ib_qp_init_attr
*qp_init_attr
);
1778 int (*destroy_qp
)(struct ib_qp
*qp
);
1779 int (*post_send
)(struct ib_qp
*qp
,
1780 struct ib_send_wr
*send_wr
,
1781 struct ib_send_wr
**bad_send_wr
);
1782 int (*post_recv
)(struct ib_qp
*qp
,
1783 struct ib_recv_wr
*recv_wr
,
1784 struct ib_recv_wr
**bad_recv_wr
);
1785 struct ib_cq
* (*create_cq
)(struct ib_device
*device
,
1786 const struct ib_cq_init_attr
*attr
,
1787 struct ib_ucontext
*context
,
1788 struct ib_udata
*udata
);
1789 int (*modify_cq
)(struct ib_cq
*cq
, u16 cq_count
,
1791 int (*destroy_cq
)(struct ib_cq
*cq
);
1792 int (*resize_cq
)(struct ib_cq
*cq
, int cqe
,
1793 struct ib_udata
*udata
);
1794 int (*poll_cq
)(struct ib_cq
*cq
, int num_entries
,
1796 int (*peek_cq
)(struct ib_cq
*cq
, int wc_cnt
);
1797 int (*req_notify_cq
)(struct ib_cq
*cq
,
1798 enum ib_cq_notify_flags flags
);
1799 int (*req_ncomp_notif
)(struct ib_cq
*cq
,
1801 struct ib_mr
* (*get_dma_mr
)(struct ib_pd
*pd
,
1802 int mr_access_flags
);
1803 struct ib_mr
* (*reg_user_mr
)(struct ib_pd
*pd
,
1804 u64 start
, u64 length
,
1806 int mr_access_flags
,
1807 struct ib_udata
*udata
);
1808 int (*rereg_user_mr
)(struct ib_mr
*mr
,
1810 u64 start
, u64 length
,
1812 int mr_access_flags
,
1814 struct ib_udata
*udata
);
1815 int (*dereg_mr
)(struct ib_mr
*mr
);
1816 struct ib_mr
* (*alloc_mr
)(struct ib_pd
*pd
,
1817 enum ib_mr_type mr_type
,
1819 int (*map_mr_sg
)(struct ib_mr
*mr
,
1820 struct scatterlist
*sg
,
1822 struct ib_mw
* (*alloc_mw
)(struct ib_pd
*pd
,
1823 enum ib_mw_type type
,
1824 struct ib_udata
*udata
);
1825 int (*dealloc_mw
)(struct ib_mw
*mw
);
1826 struct ib_fmr
* (*alloc_fmr
)(struct ib_pd
*pd
,
1827 int mr_access_flags
,
1828 struct ib_fmr_attr
*fmr_attr
);
1829 int (*map_phys_fmr
)(struct ib_fmr
*fmr
,
1830 u64
*page_list
, int list_len
,
1832 int (*unmap_fmr
)(struct list_head
*fmr_list
);
1833 int (*dealloc_fmr
)(struct ib_fmr
*fmr
);
1834 int (*attach_mcast
)(struct ib_qp
*qp
,
1837 int (*detach_mcast
)(struct ib_qp
*qp
,
1840 int (*process_mad
)(struct ib_device
*device
,
1841 int process_mad_flags
,
1843 const struct ib_wc
*in_wc
,
1844 const struct ib_grh
*in_grh
,
1845 const struct ib_mad_hdr
*in_mad
,
1847 struct ib_mad_hdr
*out_mad
,
1848 size_t *out_mad_size
,
1849 u16
*out_mad_pkey_index
);
1850 struct ib_xrcd
* (*alloc_xrcd
)(struct ib_device
*device
,
1851 struct ib_ucontext
*ucontext
,
1852 struct ib_udata
*udata
);
1853 int (*dealloc_xrcd
)(struct ib_xrcd
*xrcd
);
1854 struct ib_flow
* (*create_flow
)(struct ib_qp
*qp
,
1858 int (*destroy_flow
)(struct ib_flow
*flow_id
);
1859 int (*check_mr_status
)(struct ib_mr
*mr
, u32 check_mask
,
1860 struct ib_mr_status
*mr_status
);
1861 void (*disassociate_ucontext
)(struct ib_ucontext
*ibcontext
);
1862 void (*drain_rq
)(struct ib_qp
*qp
);
1863 void (*drain_sq
)(struct ib_qp
*qp
);
1865 struct ib_dma_mapping_ops
*dma_ops
;
1867 struct module
*owner
;
1869 struct kobject
*ports_parent
;
1870 struct list_head port_list
;
1873 IB_DEV_UNINITIALIZED
,
1879 u64 uverbs_cmd_mask
;
1880 u64 uverbs_ex_cmd_mask
;
1888 struct ib_device_attr attrs
;
1891 * The following mandatory functions are used only at device
1892 * registration. Keep functions such as these at the end of this
1893 * structure to avoid cache line misses when accessing struct ib_device
1896 int (*get_port_immutable
)(struct ib_device
*, u8
, struct ib_port_immutable
*);
1901 void (*add
) (struct ib_device
*);
1902 void (*remove
)(struct ib_device
*, void *client_data
);
1904 /* Returns the net_dev belonging to this ib_client and matching the
1906 * @dev: An RDMA device that the net_dev use for communication.
1907 * @port: A physical port number on the RDMA device.
1908 * @pkey: P_Key that the net_dev uses if applicable.
1909 * @gid: A GID that the net_dev uses to communicate.
1910 * @addr: An IP address the net_dev is configured with.
1911 * @client_data: The device's client data set by ib_set_client_data().
1913 * An ib_client that implements a net_dev on top of RDMA devices
1914 * (such as IP over IB) should implement this callback, allowing the
1915 * rdma_cm module to find the right net_dev for a given request.
1917 * The caller is responsible for calling dev_put on the returned
1919 struct net_device
*(*get_net_dev_by_params
)(
1920 struct ib_device
*dev
,
1923 const union ib_gid
*gid
,
1924 const struct sockaddr
*addr
,
1926 struct list_head list
;
1929 struct ib_device
*ib_alloc_device(size_t size
);
1930 void ib_dealloc_device(struct ib_device
*device
);
1932 int ib_register_device(struct ib_device
*device
,
1933 int (*port_callback
)(struct ib_device
*,
1934 u8
, struct kobject
*));
1935 void ib_unregister_device(struct ib_device
*device
);
1937 int ib_register_client (struct ib_client
*client
);
1938 void ib_unregister_client(struct ib_client
*client
);
1940 void *ib_get_client_data(struct ib_device
*device
, struct ib_client
*client
);
1941 void ib_set_client_data(struct ib_device
*device
, struct ib_client
*client
,
1944 static inline int ib_copy_from_udata(void *dest
, struct ib_udata
*udata
, size_t len
)
1946 return copy_from_user(dest
, udata
->inbuf
, len
) ? -EFAULT
: 0;
1949 static inline int ib_copy_to_udata(struct ib_udata
*udata
, void *src
, size_t len
)
1951 return copy_to_user(udata
->outbuf
, src
, len
) ? -EFAULT
: 0;
1954 static inline bool ib_is_udata_cleared(struct ib_udata
*udata
,
1958 const void __user
*p
= udata
->inbuf
+ offset
;
1962 if (len
> USHRT_MAX
)
1965 buf
= kmalloc(len
, GFP_KERNEL
);
1969 if (copy_from_user(buf
, p
, len
))
1972 ret
= !memchr_inv(buf
, 0, len
);
1980 * ib_modify_qp_is_ok - Check that the supplied attribute mask
1981 * contains all required attributes and no attributes not allowed for
1982 * the given QP state transition.
1983 * @cur_state: Current QP state
1984 * @next_state: Next QP state
1986 * @mask: Mask of supplied QP attributes
1987 * @ll : link layer of port
1989 * This function is a helper function that a low-level driver's
1990 * modify_qp method can use to validate the consumer's input. It
1991 * checks that cur_state and next_state are valid QP states, that a
1992 * transition from cur_state to next_state is allowed by the IB spec,
1993 * and that the attribute mask supplied is allowed for the transition.
1995 int ib_modify_qp_is_ok(enum ib_qp_state cur_state
, enum ib_qp_state next_state
,
1996 enum ib_qp_type type
, enum ib_qp_attr_mask mask
,
1997 enum rdma_link_layer ll
);
1999 int ib_register_event_handler (struct ib_event_handler
*event_handler
);
2000 int ib_unregister_event_handler(struct ib_event_handler
*event_handler
);
2001 void ib_dispatch_event(struct ib_event
*event
);
2003 int ib_query_port(struct ib_device
*device
,
2004 u8 port_num
, struct ib_port_attr
*port_attr
);
2006 enum rdma_link_layer
rdma_port_get_link_layer(struct ib_device
*device
,
2010 * rdma_cap_ib_switch - Check if the device is IB switch
2011 * @device: Device to check
2013 * Device driver is responsible for setting is_switch bit on
2014 * in ib_device structure at init time.
2016 * Return: true if the device is IB switch.
2018 static inline bool rdma_cap_ib_switch(const struct ib_device
*device
)
2020 return device
->is_switch
;
2024 * rdma_start_port - Return the first valid port number for the device
2027 * @device: Device to be checked
2029 * Return start port number
2031 static inline u8
rdma_start_port(const struct ib_device
*device
)
2033 return rdma_cap_ib_switch(device
) ? 0 : 1;
2037 * rdma_end_port - Return the last valid port number for the device
2040 * @device: Device to be checked
2042 * Return last port number
2044 static inline u8
rdma_end_port(const struct ib_device
*device
)
2046 return rdma_cap_ib_switch(device
) ? 0 : device
->phys_port_cnt
;
2049 static inline bool rdma_protocol_ib(const struct ib_device
*device
, u8 port_num
)
2051 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_PROT_IB
;
2054 static inline bool rdma_protocol_roce(const struct ib_device
*device
, u8 port_num
)
2056 return device
->port_immutable
[port_num
].core_cap_flags
&
2057 (RDMA_CORE_CAP_PROT_ROCE
| RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP
);
2060 static inline bool rdma_protocol_roce_udp_encap(const struct ib_device
*device
, u8 port_num
)
2062 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP
;
2065 static inline bool rdma_protocol_roce_eth_encap(const struct ib_device
*device
, u8 port_num
)
2067 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_PROT_ROCE
;
2070 static inline bool rdma_protocol_iwarp(const struct ib_device
*device
, u8 port_num
)
2072 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_PROT_IWARP
;
2075 static inline bool rdma_ib_or_roce(const struct ib_device
*device
, u8 port_num
)
2077 return rdma_protocol_ib(device
, port_num
) ||
2078 rdma_protocol_roce(device
, port_num
);
2082 * rdma_cap_ib_mad - Check if the port of a device supports Infiniband
2083 * Management Datagrams.
2084 * @device: Device to check
2085 * @port_num: Port number to check
2087 * Management Datagrams (MAD) are a required part of the InfiniBand
2088 * specification and are supported on all InfiniBand devices. A slightly
2089 * extended version are also supported on OPA interfaces.
2091 * Return: true if the port supports sending/receiving of MAD packets.
2093 static inline bool rdma_cap_ib_mad(const struct ib_device
*device
, u8 port_num
)
2095 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_IB_MAD
;
2099 * rdma_cap_opa_mad - Check if the port of device provides support for OPA
2100 * Management Datagrams.
2101 * @device: Device to check
2102 * @port_num: Port number to check
2104 * Intel OmniPath devices extend and/or replace the InfiniBand Management
2105 * datagrams with their own versions. These OPA MADs share many but not all of
2106 * the characteristics of InfiniBand MADs.
2108 * OPA MADs differ in the following ways:
2110 * 1) MADs are variable size up to 2K
2111 * IBTA defined MADs remain fixed at 256 bytes
2112 * 2) OPA SMPs must carry valid PKeys
2113 * 3) OPA SMP packets are a different format
2115 * Return: true if the port supports OPA MAD packet formats.
2117 static inline bool rdma_cap_opa_mad(struct ib_device
*device
, u8 port_num
)
2119 return (device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_OPA_MAD
)
2120 == RDMA_CORE_CAP_OPA_MAD
;
2124 * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband
2125 * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI).
2126 * @device: Device to check
2127 * @port_num: Port number to check
2129 * Each InfiniBand node is required to provide a Subnet Management Agent
2130 * that the subnet manager can access. Prior to the fabric being fully
2131 * configured by the subnet manager, the SMA is accessed via a well known
2132 * interface called the Subnet Management Interface (SMI). This interface
2133 * uses directed route packets to communicate with the SM to get around the
2134 * chicken and egg problem of the SM needing to know what's on the fabric
2135 * in order to configure the fabric, and needing to configure the fabric in
2136 * order to send packets to the devices on the fabric. These directed
2137 * route packets do not need the fabric fully configured in order to reach
2138 * their destination. The SMI is the only method allowed to send
2139 * directed route packets on an InfiniBand fabric.
2141 * Return: true if the port provides an SMI.
2143 static inline bool rdma_cap_ib_smi(const struct ib_device
*device
, u8 port_num
)
2145 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_IB_SMI
;
2149 * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband
2150 * Communication Manager.
2151 * @device: Device to check
2152 * @port_num: Port number to check
2154 * The InfiniBand Communication Manager is one of many pre-defined General
2155 * Service Agents (GSA) that are accessed via the General Service
2156 * Interface (GSI). It's role is to facilitate establishment of connections
2157 * between nodes as well as other management related tasks for established
2160 * Return: true if the port supports an IB CM (this does not guarantee that
2161 * a CM is actually running however).
2163 static inline bool rdma_cap_ib_cm(const struct ib_device
*device
, u8 port_num
)
2165 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_IB_CM
;
2169 * rdma_cap_iw_cm - Check if the port of device has the capability IWARP
2170 * Communication Manager.
2171 * @device: Device to check
2172 * @port_num: Port number to check
2174 * Similar to above, but specific to iWARP connections which have a different
2175 * managment protocol than InfiniBand.
2177 * Return: true if the port supports an iWARP CM (this does not guarantee that
2178 * a CM is actually running however).
2180 static inline bool rdma_cap_iw_cm(const struct ib_device
*device
, u8 port_num
)
2182 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_IW_CM
;
2186 * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband
2187 * Subnet Administration.
2188 * @device: Device to check
2189 * @port_num: Port number to check
2191 * An InfiniBand Subnet Administration (SA) service is a pre-defined General
2192 * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand
2193 * fabrics, devices should resolve routes to other hosts by contacting the
2194 * SA to query the proper route.
2196 * Return: true if the port should act as a client to the fabric Subnet
2197 * Administration interface. This does not imply that the SA service is
2200 static inline bool rdma_cap_ib_sa(const struct ib_device
*device
, u8 port_num
)
2202 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_IB_SA
;
2206 * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband
2208 * @device: Device to check
2209 * @port_num: Port number to check
2211 * InfiniBand multicast registration is more complex than normal IPv4 or
2212 * IPv6 multicast registration. Each Host Channel Adapter must register
2213 * with the Subnet Manager when it wishes to join a multicast group. It
2214 * should do so only once regardless of how many queue pairs it subscribes
2215 * to this group. And it should leave the group only after all queue pairs
2216 * attached to the group have been detached.
2218 * Return: true if the port must undertake the additional adminstrative
2219 * overhead of registering/unregistering with the SM and tracking of the
2220 * total number of queue pairs attached to the multicast group.
2222 static inline bool rdma_cap_ib_mcast(const struct ib_device
*device
, u8 port_num
)
2224 return rdma_cap_ib_sa(device
, port_num
);
2228 * rdma_cap_af_ib - Check if the port of device has the capability
2229 * Native Infiniband Address.
2230 * @device: Device to check
2231 * @port_num: Port number to check
2233 * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default
2234 * GID. RoCE uses a different mechanism, but still generates a GID via
2235 * a prescribed mechanism and port specific data.
2237 * Return: true if the port uses a GID address to identify devices on the
2240 static inline bool rdma_cap_af_ib(const struct ib_device
*device
, u8 port_num
)
2242 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_AF_IB
;
2246 * rdma_cap_eth_ah - Check if the port of device has the capability
2247 * Ethernet Address Handle.
2248 * @device: Device to check
2249 * @port_num: Port number to check
2251 * RoCE is InfiniBand over Ethernet, and it uses a well defined technique
2252 * to fabricate GIDs over Ethernet/IP specific addresses native to the
2253 * port. Normally, packet headers are generated by the sending host
2254 * adapter, but when sending connectionless datagrams, we must manually
2255 * inject the proper headers for the fabric we are communicating over.
2257 * Return: true if we are running as a RoCE port and must force the
2258 * addition of a Global Route Header built from our Ethernet Address
2259 * Handle into our header list for connectionless packets.
2261 static inline bool rdma_cap_eth_ah(const struct ib_device
*device
, u8 port_num
)
2263 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_ETH_AH
;
2267 * rdma_max_mad_size - Return the max MAD size required by this RDMA Port.
2270 * @port_num: Port number
2272 * This MAD size includes the MAD headers and MAD payload. No other headers
2275 * Return the max MAD size required by the Port. Will return 0 if the port
2276 * does not support MADs
2278 static inline size_t rdma_max_mad_size(const struct ib_device
*device
, u8 port_num
)
2280 return device
->port_immutable
[port_num
].max_mad_size
;
2284 * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table
2285 * @device: Device to check
2286 * @port_num: Port number to check
2288 * RoCE GID table mechanism manages the various GIDs for a device.
2290 * NOTE: if allocating the port's GID table has failed, this call will still
2291 * return true, but any RoCE GID table API will fail.
2293 * Return: true if the port uses RoCE GID table mechanism in order to manage
2296 static inline bool rdma_cap_roce_gid_table(const struct ib_device
*device
,
2299 return rdma_protocol_roce(device
, port_num
) &&
2300 device
->add_gid
&& device
->del_gid
;
2303 int ib_query_gid(struct ib_device
*device
,
2304 u8 port_num
, int index
, union ib_gid
*gid
,
2305 struct ib_gid_attr
*attr
);
2307 int ib_query_pkey(struct ib_device
*device
,
2308 u8 port_num
, u16 index
, u16
*pkey
);
2310 int ib_modify_device(struct ib_device
*device
,
2311 int device_modify_mask
,
2312 struct ib_device_modify
*device_modify
);
2314 int ib_modify_port(struct ib_device
*device
,
2315 u8 port_num
, int port_modify_mask
,
2316 struct ib_port_modify
*port_modify
);
2318 int ib_find_gid(struct ib_device
*device
, union ib_gid
*gid
,
2319 enum ib_gid_type gid_type
, struct net_device
*ndev
,
2320 u8
*port_num
, u16
*index
);
2322 int ib_find_pkey(struct ib_device
*device
,
2323 u8 port_num
, u16 pkey
, u16
*index
);
2325 struct ib_pd
*ib_alloc_pd(struct ib_device
*device
);
2327 void ib_dealloc_pd(struct ib_pd
*pd
);
2330 * ib_create_ah - Creates an address handle for the given address vector.
2331 * @pd: The protection domain associated with the address handle.
2332 * @ah_attr: The attributes of the address vector.
2334 * The address handle is used to reference a local or global destination
2335 * in all UD QP post sends.
2337 struct ib_ah
*ib_create_ah(struct ib_pd
*pd
, struct ib_ah_attr
*ah_attr
);
2340 * ib_init_ah_from_wc - Initializes address handle attributes from a
2342 * @device: Device on which the received message arrived.
2343 * @port_num: Port on which the received message arrived.
2344 * @wc: Work completion associated with the received message.
2345 * @grh: References the received global route header. This parameter is
2346 * ignored unless the work completion indicates that the GRH is valid.
2347 * @ah_attr: Returned attributes that can be used when creating an address
2348 * handle for replying to the message.
2350 int ib_init_ah_from_wc(struct ib_device
*device
, u8 port_num
,
2351 const struct ib_wc
*wc
, const struct ib_grh
*grh
,
2352 struct ib_ah_attr
*ah_attr
);
2355 * ib_create_ah_from_wc - Creates an address handle associated with the
2356 * sender of the specified work completion.
2357 * @pd: The protection domain associated with the address handle.
2358 * @wc: Work completion information associated with a received message.
2359 * @grh: References the received global route header. This parameter is
2360 * ignored unless the work completion indicates that the GRH is valid.
2361 * @port_num: The outbound port number to associate with the address.
2363 * The address handle is used to reference a local or global destination
2364 * in all UD QP post sends.
2366 struct ib_ah
*ib_create_ah_from_wc(struct ib_pd
*pd
, const struct ib_wc
*wc
,
2367 const struct ib_grh
*grh
, u8 port_num
);
2370 * ib_modify_ah - Modifies the address vector associated with an address
2372 * @ah: The address handle to modify.
2373 * @ah_attr: The new address vector attributes to associate with the
2376 int ib_modify_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
);
2379 * ib_query_ah - Queries the address vector associated with an address
2381 * @ah: The address handle to query.
2382 * @ah_attr: The address vector attributes associated with the address
2385 int ib_query_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
);
2388 * ib_destroy_ah - Destroys an address handle.
2389 * @ah: The address handle to destroy.
2391 int ib_destroy_ah(struct ib_ah
*ah
);
2394 * ib_create_srq - Creates a SRQ associated with the specified protection
2396 * @pd: The protection domain associated with the SRQ.
2397 * @srq_init_attr: A list of initial attributes required to create the
2398 * SRQ. If SRQ creation succeeds, then the attributes are updated to
2399 * the actual capabilities of the created SRQ.
2401 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
2402 * requested size of the SRQ, and set to the actual values allocated
2403 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
2404 * will always be at least as large as the requested values.
2406 struct ib_srq
*ib_create_srq(struct ib_pd
*pd
,
2407 struct ib_srq_init_attr
*srq_init_attr
);
2410 * ib_modify_srq - Modifies the attributes for the specified SRQ.
2411 * @srq: The SRQ to modify.
2412 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
2413 * the current values of selected SRQ attributes are returned.
2414 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
2415 * are being modified.
2417 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
2418 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
2419 * the number of receives queued drops below the limit.
2421 int ib_modify_srq(struct ib_srq
*srq
,
2422 struct ib_srq_attr
*srq_attr
,
2423 enum ib_srq_attr_mask srq_attr_mask
);
2426 * ib_query_srq - Returns the attribute list and current values for the
2428 * @srq: The SRQ to query.
2429 * @srq_attr: The attributes of the specified SRQ.
2431 int ib_query_srq(struct ib_srq
*srq
,
2432 struct ib_srq_attr
*srq_attr
);
2435 * ib_destroy_srq - Destroys the specified SRQ.
2436 * @srq: The SRQ to destroy.
2438 int ib_destroy_srq(struct ib_srq
*srq
);
2441 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
2442 * @srq: The SRQ to post the work request on.
2443 * @recv_wr: A list of work requests to post on the receive queue.
2444 * @bad_recv_wr: On an immediate failure, this parameter will reference
2445 * the work request that failed to be posted on the QP.
2447 static inline int ib_post_srq_recv(struct ib_srq
*srq
,
2448 struct ib_recv_wr
*recv_wr
,
2449 struct ib_recv_wr
**bad_recv_wr
)
2451 return srq
->device
->post_srq_recv(srq
, recv_wr
, bad_recv_wr
);
2455 * ib_create_qp - Creates a QP associated with the specified protection
2457 * @pd: The protection domain associated with the QP.
2458 * @qp_init_attr: A list of initial attributes required to create the
2459 * QP. If QP creation succeeds, then the attributes are updated to
2460 * the actual capabilities of the created QP.
2462 struct ib_qp
*ib_create_qp(struct ib_pd
*pd
,
2463 struct ib_qp_init_attr
*qp_init_attr
);
2466 * ib_modify_qp - Modifies the attributes for the specified QP and then
2467 * transitions the QP to the given state.
2468 * @qp: The QP to modify.
2469 * @qp_attr: On input, specifies the QP attributes to modify. On output,
2470 * the current values of selected QP attributes are returned.
2471 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
2472 * are being modified.
2474 int ib_modify_qp(struct ib_qp
*qp
,
2475 struct ib_qp_attr
*qp_attr
,
2479 * ib_query_qp - Returns the attribute list and current values for the
2481 * @qp: The QP to query.
2482 * @qp_attr: The attributes of the specified QP.
2483 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
2484 * @qp_init_attr: Additional attributes of the selected QP.
2486 * The qp_attr_mask may be used to limit the query to gathering only the
2487 * selected attributes.
2489 int ib_query_qp(struct ib_qp
*qp
,
2490 struct ib_qp_attr
*qp_attr
,
2492 struct ib_qp_init_attr
*qp_init_attr
);
2495 * ib_destroy_qp - Destroys the specified QP.
2496 * @qp: The QP to destroy.
2498 int ib_destroy_qp(struct ib_qp
*qp
);
2501 * ib_open_qp - Obtain a reference to an existing sharable QP.
2502 * @xrcd - XRC domain
2503 * @qp_open_attr: Attributes identifying the QP to open.
2505 * Returns a reference to a sharable QP.
2507 struct ib_qp
*ib_open_qp(struct ib_xrcd
*xrcd
,
2508 struct ib_qp_open_attr
*qp_open_attr
);
2511 * ib_close_qp - Release an external reference to a QP.
2512 * @qp: The QP handle to release
2514 * The opened QP handle is released by the caller. The underlying
2515 * shared QP is not destroyed until all internal references are released.
2517 int ib_close_qp(struct ib_qp
*qp
);
2520 * ib_post_send - Posts a list of work requests to the send queue of
2522 * @qp: The QP to post the work request on.
2523 * @send_wr: A list of work requests to post on the send queue.
2524 * @bad_send_wr: On an immediate failure, this parameter will reference
2525 * the work request that failed to be posted on the QP.
2527 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
2528 * error is returned, the QP state shall not be affected,
2529 * ib_post_send() will return an immediate error after queueing any
2530 * earlier work requests in the list.
2532 static inline int ib_post_send(struct ib_qp
*qp
,
2533 struct ib_send_wr
*send_wr
,
2534 struct ib_send_wr
**bad_send_wr
)
2536 return qp
->device
->post_send(qp
, send_wr
, bad_send_wr
);
2540 * ib_post_recv - Posts a list of work requests to the receive queue of
2542 * @qp: The QP to post the work request on.
2543 * @recv_wr: A list of work requests to post on the receive queue.
2544 * @bad_recv_wr: On an immediate failure, this parameter will reference
2545 * the work request that failed to be posted on the QP.
2547 static inline int ib_post_recv(struct ib_qp
*qp
,
2548 struct ib_recv_wr
*recv_wr
,
2549 struct ib_recv_wr
**bad_recv_wr
)
2551 return qp
->device
->post_recv(qp
, recv_wr
, bad_recv_wr
);
2554 struct ib_cq
*ib_alloc_cq(struct ib_device
*dev
, void *private,
2555 int nr_cqe
, int comp_vector
, enum ib_poll_context poll_ctx
);
2556 void ib_free_cq(struct ib_cq
*cq
);
2557 int ib_process_cq_direct(struct ib_cq
*cq
, int budget
);
2560 * ib_create_cq - Creates a CQ on the specified device.
2561 * @device: The device on which to create the CQ.
2562 * @comp_handler: A user-specified callback that is invoked when a
2563 * completion event occurs on the CQ.
2564 * @event_handler: A user-specified callback that is invoked when an
2565 * asynchronous event not associated with a completion occurs on the CQ.
2566 * @cq_context: Context associated with the CQ returned to the user via
2567 * the associated completion and event handlers.
2568 * @cq_attr: The attributes the CQ should be created upon.
2570 * Users can examine the cq structure to determine the actual CQ size.
2572 struct ib_cq
*ib_create_cq(struct ib_device
*device
,
2573 ib_comp_handler comp_handler
,
2574 void (*event_handler
)(struct ib_event
*, void *),
2576 const struct ib_cq_init_attr
*cq_attr
);
2579 * ib_resize_cq - Modifies the capacity of the CQ.
2580 * @cq: The CQ to resize.
2581 * @cqe: The minimum size of the CQ.
2583 * Users can examine the cq structure to determine the actual CQ size.
2585 int ib_resize_cq(struct ib_cq
*cq
, int cqe
);
2588 * ib_modify_cq - Modifies moderation params of the CQ
2589 * @cq: The CQ to modify.
2590 * @cq_count: number of CQEs that will trigger an event
2591 * @cq_period: max period of time in usec before triggering an event
2594 int ib_modify_cq(struct ib_cq
*cq
, u16 cq_count
, u16 cq_period
);
2597 * ib_destroy_cq - Destroys the specified CQ.
2598 * @cq: The CQ to destroy.
2600 int ib_destroy_cq(struct ib_cq
*cq
);
2603 * ib_poll_cq - poll a CQ for completion(s)
2604 * @cq:the CQ being polled
2605 * @num_entries:maximum number of completions to return
2606 * @wc:array of at least @num_entries &struct ib_wc where completions
2609 * Poll a CQ for (possibly multiple) completions. If the return value
2610 * is < 0, an error occurred. If the return value is >= 0, it is the
2611 * number of completions returned. If the return value is
2612 * non-negative and < num_entries, then the CQ was emptied.
2614 static inline int ib_poll_cq(struct ib_cq
*cq
, int num_entries
,
2617 return cq
->device
->poll_cq(cq
, num_entries
, wc
);
2621 * ib_peek_cq - Returns the number of unreaped completions currently
2622 * on the specified CQ.
2623 * @cq: The CQ to peek.
2624 * @wc_cnt: A minimum number of unreaped completions to check for.
2626 * If the number of unreaped completions is greater than or equal to wc_cnt,
2627 * this function returns wc_cnt, otherwise, it returns the actual number of
2628 * unreaped completions.
2630 int ib_peek_cq(struct ib_cq
*cq
, int wc_cnt
);
2633 * ib_req_notify_cq - Request completion notification on a CQ.
2634 * @cq: The CQ to generate an event for.
2636 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
2637 * to request an event on the next solicited event or next work
2638 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
2639 * may also be |ed in to request a hint about missed events, as
2643 * < 0 means an error occurred while requesting notification
2644 * == 0 means notification was requested successfully, and if
2645 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
2646 * were missed and it is safe to wait for another event. In
2647 * this case is it guaranteed that any work completions added
2648 * to the CQ since the last CQ poll will trigger a completion
2649 * notification event.
2650 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
2651 * in. It means that the consumer must poll the CQ again to
2652 * make sure it is empty to avoid missing an event because of a
2653 * race between requesting notification and an entry being
2654 * added to the CQ. This return value means it is possible
2655 * (but not guaranteed) that a work completion has been added
2656 * to the CQ since the last poll without triggering a
2657 * completion notification event.
2659 static inline int ib_req_notify_cq(struct ib_cq
*cq
,
2660 enum ib_cq_notify_flags flags
)
2662 return cq
->device
->req_notify_cq(cq
, flags
);
2666 * ib_req_ncomp_notif - Request completion notification when there are
2667 * at least the specified number of unreaped completions on the CQ.
2668 * @cq: The CQ to generate an event for.
2669 * @wc_cnt: The number of unreaped completions that should be on the
2670 * CQ before an event is generated.
2672 static inline int ib_req_ncomp_notif(struct ib_cq
*cq
, int wc_cnt
)
2674 return cq
->device
->req_ncomp_notif
?
2675 cq
->device
->req_ncomp_notif(cq
, wc_cnt
) :
2680 * ib_get_dma_mr - Returns a memory region for system memory that is
2682 * @pd: The protection domain associated with the memory region.
2683 * @mr_access_flags: Specifies the memory access rights.
2685 * Note that the ib_dma_*() functions defined below must be used
2686 * to create/destroy addresses used with the Lkey or Rkey returned
2687 * by ib_get_dma_mr().
2689 struct ib_mr
*ib_get_dma_mr(struct ib_pd
*pd
, int mr_access_flags
);
2692 * ib_dma_mapping_error - check a DMA addr for error
2693 * @dev: The device for which the dma_addr was created
2694 * @dma_addr: The DMA address to check
2696 static inline int ib_dma_mapping_error(struct ib_device
*dev
, u64 dma_addr
)
2699 return dev
->dma_ops
->mapping_error(dev
, dma_addr
);
2700 return dma_mapping_error(dev
->dma_device
, dma_addr
);
2704 * ib_dma_map_single - Map a kernel virtual address to DMA address
2705 * @dev: The device for which the dma_addr is to be created
2706 * @cpu_addr: The kernel virtual address
2707 * @size: The size of the region in bytes
2708 * @direction: The direction of the DMA
2710 static inline u64
ib_dma_map_single(struct ib_device
*dev
,
2711 void *cpu_addr
, size_t size
,
2712 enum dma_data_direction direction
)
2715 return dev
->dma_ops
->map_single(dev
, cpu_addr
, size
, direction
);
2716 return dma_map_single(dev
->dma_device
, cpu_addr
, size
, direction
);
2720 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
2721 * @dev: The device for which the DMA address was created
2722 * @addr: The DMA address
2723 * @size: The size of the region in bytes
2724 * @direction: The direction of the DMA
2726 static inline void ib_dma_unmap_single(struct ib_device
*dev
,
2727 u64 addr
, size_t size
,
2728 enum dma_data_direction direction
)
2731 dev
->dma_ops
->unmap_single(dev
, addr
, size
, direction
);
2733 dma_unmap_single(dev
->dma_device
, addr
, size
, direction
);
2736 static inline u64
ib_dma_map_single_attrs(struct ib_device
*dev
,
2737 void *cpu_addr
, size_t size
,
2738 enum dma_data_direction direction
,
2739 struct dma_attrs
*attrs
)
2741 return dma_map_single_attrs(dev
->dma_device
, cpu_addr
, size
,
2745 static inline void ib_dma_unmap_single_attrs(struct ib_device
*dev
,
2746 u64 addr
, size_t size
,
2747 enum dma_data_direction direction
,
2748 struct dma_attrs
*attrs
)
2750 return dma_unmap_single_attrs(dev
->dma_device
, addr
, size
,
2755 * ib_dma_map_page - Map a physical page to DMA address
2756 * @dev: The device for which the dma_addr is to be created
2757 * @page: The page to be mapped
2758 * @offset: The offset within the page
2759 * @size: The size of the region in bytes
2760 * @direction: The direction of the DMA
2762 static inline u64
ib_dma_map_page(struct ib_device
*dev
,
2764 unsigned long offset
,
2766 enum dma_data_direction direction
)
2769 return dev
->dma_ops
->map_page(dev
, page
, offset
, size
, direction
);
2770 return dma_map_page(dev
->dma_device
, page
, offset
, size
, direction
);
2774 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
2775 * @dev: The device for which the DMA address was created
2776 * @addr: The DMA address
2777 * @size: The size of the region in bytes
2778 * @direction: The direction of the DMA
2780 static inline void ib_dma_unmap_page(struct ib_device
*dev
,
2781 u64 addr
, size_t size
,
2782 enum dma_data_direction direction
)
2785 dev
->dma_ops
->unmap_page(dev
, addr
, size
, direction
);
2787 dma_unmap_page(dev
->dma_device
, addr
, size
, direction
);
2791 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
2792 * @dev: The device for which the DMA addresses are to be created
2793 * @sg: The array of scatter/gather entries
2794 * @nents: The number of scatter/gather entries
2795 * @direction: The direction of the DMA
2797 static inline int ib_dma_map_sg(struct ib_device
*dev
,
2798 struct scatterlist
*sg
, int nents
,
2799 enum dma_data_direction direction
)
2802 return dev
->dma_ops
->map_sg(dev
, sg
, nents
, direction
);
2803 return dma_map_sg(dev
->dma_device
, sg
, nents
, direction
);
2807 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
2808 * @dev: The device for which the DMA addresses were created
2809 * @sg: The array of scatter/gather entries
2810 * @nents: The number of scatter/gather entries
2811 * @direction: The direction of the DMA
2813 static inline void ib_dma_unmap_sg(struct ib_device
*dev
,
2814 struct scatterlist
*sg
, int nents
,
2815 enum dma_data_direction direction
)
2818 dev
->dma_ops
->unmap_sg(dev
, sg
, nents
, direction
);
2820 dma_unmap_sg(dev
->dma_device
, sg
, nents
, direction
);
2823 static inline int ib_dma_map_sg_attrs(struct ib_device
*dev
,
2824 struct scatterlist
*sg
, int nents
,
2825 enum dma_data_direction direction
,
2826 struct dma_attrs
*attrs
)
2828 return dma_map_sg_attrs(dev
->dma_device
, sg
, nents
, direction
, attrs
);
2831 static inline void ib_dma_unmap_sg_attrs(struct ib_device
*dev
,
2832 struct scatterlist
*sg
, int nents
,
2833 enum dma_data_direction direction
,
2834 struct dma_attrs
*attrs
)
2836 dma_unmap_sg_attrs(dev
->dma_device
, sg
, nents
, direction
, attrs
);
2839 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
2840 * @dev: The device for which the DMA addresses were created
2841 * @sg: The scatter/gather entry
2843 * Note: this function is obsolete. To do: change all occurrences of
2844 * ib_sg_dma_address() into sg_dma_address().
2846 static inline u64
ib_sg_dma_address(struct ib_device
*dev
,
2847 struct scatterlist
*sg
)
2849 return sg_dma_address(sg
);
2853 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
2854 * @dev: The device for which the DMA addresses were created
2855 * @sg: The scatter/gather entry
2857 * Note: this function is obsolete. To do: change all occurrences of
2858 * ib_sg_dma_len() into sg_dma_len().
2860 static inline unsigned int ib_sg_dma_len(struct ib_device
*dev
,
2861 struct scatterlist
*sg
)
2863 return sg_dma_len(sg
);
2867 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
2868 * @dev: The device for which the DMA address was created
2869 * @addr: The DMA address
2870 * @size: The size of the region in bytes
2871 * @dir: The direction of the DMA
2873 static inline void ib_dma_sync_single_for_cpu(struct ib_device
*dev
,
2876 enum dma_data_direction dir
)
2879 dev
->dma_ops
->sync_single_for_cpu(dev
, addr
, size
, dir
);
2881 dma_sync_single_for_cpu(dev
->dma_device
, addr
, size
, dir
);
2885 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
2886 * @dev: The device for which the DMA address was created
2887 * @addr: The DMA address
2888 * @size: The size of the region in bytes
2889 * @dir: The direction of the DMA
2891 static inline void ib_dma_sync_single_for_device(struct ib_device
*dev
,
2894 enum dma_data_direction dir
)
2897 dev
->dma_ops
->sync_single_for_device(dev
, addr
, size
, dir
);
2899 dma_sync_single_for_device(dev
->dma_device
, addr
, size
, dir
);
2903 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
2904 * @dev: The device for which the DMA address is requested
2905 * @size: The size of the region to allocate in bytes
2906 * @dma_handle: A pointer for returning the DMA address of the region
2907 * @flag: memory allocator flags
2909 static inline void *ib_dma_alloc_coherent(struct ib_device
*dev
,
2915 return dev
->dma_ops
->alloc_coherent(dev
, size
, dma_handle
, flag
);
2920 ret
= dma_alloc_coherent(dev
->dma_device
, size
, &handle
, flag
);
2921 *dma_handle
= handle
;
2927 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
2928 * @dev: The device for which the DMA addresses were allocated
2929 * @size: The size of the region
2930 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
2931 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
2933 static inline void ib_dma_free_coherent(struct ib_device
*dev
,
2934 size_t size
, void *cpu_addr
,
2938 dev
->dma_ops
->free_coherent(dev
, size
, cpu_addr
, dma_handle
);
2940 dma_free_coherent(dev
->dma_device
, size
, cpu_addr
, dma_handle
);
2944 * ib_dereg_mr - Deregisters a memory region and removes it from the
2945 * HCA translation table.
2946 * @mr: The memory region to deregister.
2948 * This function can fail, if the memory region has memory windows bound to it.
2950 int ib_dereg_mr(struct ib_mr
*mr
);
2952 struct ib_mr
*ib_alloc_mr(struct ib_pd
*pd
,
2953 enum ib_mr_type mr_type
,
2957 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
2959 * @mr - struct ib_mr pointer to be updated.
2960 * @newkey - new key to be used.
2962 static inline void ib_update_fast_reg_key(struct ib_mr
*mr
, u8 newkey
)
2964 mr
->lkey
= (mr
->lkey
& 0xffffff00) | newkey
;
2965 mr
->rkey
= (mr
->rkey
& 0xffffff00) | newkey
;
2969 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
2970 * for calculating a new rkey for type 2 memory windows.
2971 * @rkey - the rkey to increment.
2973 static inline u32
ib_inc_rkey(u32 rkey
)
2975 const u32 mask
= 0x000000ff;
2976 return ((rkey
+ 1) & mask
) | (rkey
& ~mask
);
2980 * ib_alloc_fmr - Allocates a unmapped fast memory region.
2981 * @pd: The protection domain associated with the unmapped region.
2982 * @mr_access_flags: Specifies the memory access rights.
2983 * @fmr_attr: Attributes of the unmapped region.
2985 * A fast memory region must be mapped before it can be used as part of
2988 struct ib_fmr
*ib_alloc_fmr(struct ib_pd
*pd
,
2989 int mr_access_flags
,
2990 struct ib_fmr_attr
*fmr_attr
);
2993 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
2994 * @fmr: The fast memory region to associate with the pages.
2995 * @page_list: An array of physical pages to map to the fast memory region.
2996 * @list_len: The number of pages in page_list.
2997 * @iova: The I/O virtual address to use with the mapped region.
2999 static inline int ib_map_phys_fmr(struct ib_fmr
*fmr
,
3000 u64
*page_list
, int list_len
,
3003 return fmr
->device
->map_phys_fmr(fmr
, page_list
, list_len
, iova
);
3007 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
3008 * @fmr_list: A linked list of fast memory regions to unmap.
3010 int ib_unmap_fmr(struct list_head
*fmr_list
);
3013 * ib_dealloc_fmr - Deallocates a fast memory region.
3014 * @fmr: The fast memory region to deallocate.
3016 int ib_dealloc_fmr(struct ib_fmr
*fmr
);
3019 * ib_attach_mcast - Attaches the specified QP to a multicast group.
3020 * @qp: QP to attach to the multicast group. The QP must be type
3022 * @gid: Multicast group GID.
3023 * @lid: Multicast group LID in host byte order.
3025 * In order to send and receive multicast packets, subnet
3026 * administration must have created the multicast group and configured
3027 * the fabric appropriately. The port associated with the specified
3028 * QP must also be a member of the multicast group.
3030 int ib_attach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
);
3033 * ib_detach_mcast - Detaches the specified QP from a multicast group.
3034 * @qp: QP to detach from the multicast group.
3035 * @gid: Multicast group GID.
3036 * @lid: Multicast group LID in host byte order.
3038 int ib_detach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
);
3041 * ib_alloc_xrcd - Allocates an XRC domain.
3042 * @device: The device on which to allocate the XRC domain.
3044 struct ib_xrcd
*ib_alloc_xrcd(struct ib_device
*device
);
3047 * ib_dealloc_xrcd - Deallocates an XRC domain.
3048 * @xrcd: The XRC domain to deallocate.
3050 int ib_dealloc_xrcd(struct ib_xrcd
*xrcd
);
3052 struct ib_flow
*ib_create_flow(struct ib_qp
*qp
,
3053 struct ib_flow_attr
*flow_attr
, int domain
);
3054 int ib_destroy_flow(struct ib_flow
*flow_id
);
3056 static inline int ib_check_mr_access(int flags
)
3059 * Local write permission is required if remote write or
3060 * remote atomic permission is also requested.
3062 if (flags
& (IB_ACCESS_REMOTE_ATOMIC
| IB_ACCESS_REMOTE_WRITE
) &&
3063 !(flags
& IB_ACCESS_LOCAL_WRITE
))
3070 * ib_check_mr_status: lightweight check of MR status.
3071 * This routine may provide status checks on a selected
3072 * ib_mr. first use is for signature status check.
3074 * @mr: A memory region.
3075 * @check_mask: Bitmask of which checks to perform from
3076 * ib_mr_status_check enumeration.
3077 * @mr_status: The container of relevant status checks.
3078 * failed checks will be indicated in the status bitmask
3079 * and the relevant info shall be in the error item.
3081 int ib_check_mr_status(struct ib_mr
*mr
, u32 check_mask
,
3082 struct ib_mr_status
*mr_status
);
3084 struct net_device
*ib_get_net_dev_by_params(struct ib_device
*dev
, u8 port
,
3085 u16 pkey
, const union ib_gid
*gid
,
3086 const struct sockaddr
*addr
);
3088 int ib_map_mr_sg(struct ib_mr
*mr
,
3089 struct scatterlist
*sg
,
3091 unsigned int page_size
);
3094 ib_map_mr_sg_zbva(struct ib_mr
*mr
,
3095 struct scatterlist
*sg
,
3097 unsigned int page_size
)
3101 n
= ib_map_mr_sg(mr
, sg
, sg_nents
, page_size
);
3107 int ib_sg_to_pages(struct ib_mr
*mr
,
3108 struct scatterlist
*sgl
,
3110 int (*set_page
)(struct ib_mr
*, u64
));
3112 void ib_drain_rq(struct ib_qp
*qp
);
3113 void ib_drain_sq(struct ib_qp
*qp
);
3114 void ib_drain_qp(struct ib_qp
*qp
);
3115 #endif /* IB_VERBS_H */