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 int 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
{
493 enum ib_port_state state
;
495 enum ib_mtu active_mtu
;
514 enum ib_device_modify_flags
{
515 IB_DEVICE_MODIFY_SYS_IMAGE_GUID
= 1 << 0,
516 IB_DEVICE_MODIFY_NODE_DESC
= 1 << 1
519 struct ib_device_modify
{
524 enum ib_port_modify_flags
{
525 IB_PORT_SHUTDOWN
= 1,
526 IB_PORT_INIT_TYPE
= (1<<2),
527 IB_PORT_RESET_QKEY_CNTR
= (1<<3)
530 struct ib_port_modify
{
531 u32 set_port_cap_mask
;
532 u32 clr_port_cap_mask
;
540 IB_EVENT_QP_ACCESS_ERR
,
544 IB_EVENT_PATH_MIG_ERR
,
545 IB_EVENT_DEVICE_FATAL
,
546 IB_EVENT_PORT_ACTIVE
,
549 IB_EVENT_PKEY_CHANGE
,
552 IB_EVENT_SRQ_LIMIT_REACHED
,
553 IB_EVENT_QP_LAST_WQE_REACHED
,
554 IB_EVENT_CLIENT_REREGISTER
,
558 const char *__attribute_const__
ib_event_msg(enum ib_event_type event
);
561 struct ib_device
*device
;
568 enum ib_event_type event
;
571 struct ib_event_handler
{
572 struct ib_device
*device
;
573 void (*handler
)(struct ib_event_handler
*, struct ib_event
*);
574 struct list_head list
;
577 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
579 (_ptr)->device = _device; \
580 (_ptr)->handler = _handler; \
581 INIT_LIST_HEAD(&(_ptr)->list); \
584 struct ib_global_route
{
593 __be32 version_tclass_flow
;
601 union rdma_network_hdr
{
604 /* The IB spec states that if it's IPv4, the header
605 * is located in the last 20 bytes of the header.
608 struct iphdr roce4grh
;
613 IB_MULTICAST_QPN
= 0xffffff
616 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
623 IB_RATE_PORT_CURRENT
= 0,
624 IB_RATE_2_5_GBPS
= 2,
632 IB_RATE_120_GBPS
= 10,
633 IB_RATE_14_GBPS
= 11,
634 IB_RATE_56_GBPS
= 12,
635 IB_RATE_112_GBPS
= 13,
636 IB_RATE_168_GBPS
= 14,
637 IB_RATE_25_GBPS
= 15,
638 IB_RATE_100_GBPS
= 16,
639 IB_RATE_200_GBPS
= 17,
640 IB_RATE_300_GBPS
= 18
644 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
645 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
646 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
647 * @rate: rate to convert.
649 __attribute_const__
int ib_rate_to_mult(enum ib_rate rate
);
652 * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
653 * For example, IB_RATE_2_5_GBPS will be converted to 2500.
654 * @rate: rate to convert.
656 __attribute_const__
int ib_rate_to_mbps(enum ib_rate rate
);
660 * enum ib_mr_type - memory region type
661 * @IB_MR_TYPE_MEM_REG: memory region that is used for
662 * normal registration
663 * @IB_MR_TYPE_SIGNATURE: memory region that is used for
664 * signature operations (data-integrity
666 * @IB_MR_TYPE_SG_GAPS: memory region that is capable to
667 * register any arbitrary sg lists (without
668 * the normal mr constraints - see
673 IB_MR_TYPE_SIGNATURE
,
679 * IB_SIG_TYPE_NONE: Unprotected.
680 * IB_SIG_TYPE_T10_DIF: Type T10-DIF
682 enum ib_signature_type
{
688 * Signature T10-DIF block-guard types
689 * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules.
690 * IB_T10DIF_CSUM: Corresponds to IP checksum rules.
692 enum ib_t10_dif_bg_type
{
698 * struct ib_t10_dif_domain - Parameters specific for T10-DIF
700 * @bg_type: T10-DIF block guard type (CRC|CSUM)
701 * @pi_interval: protection information interval.
702 * @bg: seed of guard computation.
703 * @app_tag: application tag of guard block
704 * @ref_tag: initial guard block reference tag.
705 * @ref_remap: Indicate wethear the reftag increments each block
706 * @app_escape: Indicate to skip block check if apptag=0xffff
707 * @ref_escape: Indicate to skip block check if reftag=0xffffffff
708 * @apptag_check_mask: check bitmask of application tag.
710 struct ib_t10_dif_domain
{
711 enum ib_t10_dif_bg_type bg_type
;
719 u16 apptag_check_mask
;
723 * struct ib_sig_domain - Parameters for signature domain
724 * @sig_type: specific signauture type
725 * @sig: union of all signature domain attributes that may
726 * be used to set domain layout.
728 struct ib_sig_domain
{
729 enum ib_signature_type sig_type
;
731 struct ib_t10_dif_domain dif
;
736 * struct ib_sig_attrs - Parameters for signature handover operation
737 * @check_mask: bitmask for signature byte check (8 bytes)
738 * @mem: memory domain layout desciptor.
739 * @wire: wire domain layout desciptor.
741 struct ib_sig_attrs
{
743 struct ib_sig_domain mem
;
744 struct ib_sig_domain wire
;
747 enum ib_sig_err_type
{
754 * struct ib_sig_err - signature error descriptor
757 enum ib_sig_err_type err_type
;
764 enum ib_mr_status_check
{
765 IB_MR_CHECK_SIG_STATUS
= 1,
769 * struct ib_mr_status - Memory region status container
771 * @fail_status: Bitmask of MR checks status. For each
772 * failed check a corresponding status bit is set.
773 * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS
776 struct ib_mr_status
{
778 struct ib_sig_err sig_err
;
782 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
784 * @mult: multiple to convert.
786 __attribute_const__
enum ib_rate
mult_to_ib_rate(int mult
);
789 struct ib_global_route grh
;
803 IB_WC_LOC_EEC_OP_ERR
,
808 IB_WC_LOC_ACCESS_ERR
,
809 IB_WC_REM_INV_REQ_ERR
,
810 IB_WC_REM_ACCESS_ERR
,
813 IB_WC_RNR_RETRY_EXC_ERR
,
814 IB_WC_LOC_RDD_VIOL_ERR
,
815 IB_WC_REM_INV_RD_REQ_ERR
,
818 IB_WC_INV_EEC_STATE_ERR
,
820 IB_WC_RESP_TIMEOUT_ERR
,
824 const char *__attribute_const__
ib_wc_status_msg(enum ib_wc_status status
);
835 IB_WC_MASKED_COMP_SWAP
,
836 IB_WC_MASKED_FETCH_ADD
,
838 * Set value of IB_WC_RECV so consumers can test if a completion is a
839 * receive by testing (opcode & IB_WC_RECV).
842 IB_WC_RECV_RDMA_WITH_IMM
847 IB_WC_WITH_IMM
= (1<<1),
848 IB_WC_WITH_INVALIDATE
= (1<<2),
849 IB_WC_IP_CSUM_OK
= (1<<3),
850 IB_WC_WITH_SMAC
= (1<<4),
851 IB_WC_WITH_VLAN
= (1<<5),
852 IB_WC_WITH_NETWORK_HDR_TYPE
= (1<<6),
858 struct ib_cqe
*wr_cqe
;
860 enum ib_wc_status status
;
861 enum ib_wc_opcode opcode
;
875 u8 port_num
; /* valid only for DR SMPs on switches */
881 enum ib_cq_notify_flags
{
882 IB_CQ_SOLICITED
= 1 << 0,
883 IB_CQ_NEXT_COMP
= 1 << 1,
884 IB_CQ_SOLICITED_MASK
= IB_CQ_SOLICITED
| IB_CQ_NEXT_COMP
,
885 IB_CQ_REPORT_MISSED_EVENTS
= 1 << 2,
893 enum ib_srq_attr_mask
{
894 IB_SRQ_MAX_WR
= 1 << 0,
895 IB_SRQ_LIMIT
= 1 << 1,
904 struct ib_srq_init_attr
{
905 void (*event_handler
)(struct ib_event
*, void *);
907 struct ib_srq_attr attr
;
908 enum ib_srq_type srq_type
;
912 struct ib_xrcd
*xrcd
;
933 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
934 * here (and in that order) since the MAD layer uses them as
935 * indices into a 2-entry table.
944 IB_QPT_RAW_ETHERTYPE
,
945 IB_QPT_RAW_PACKET
= 8,
949 /* Reserve a range for qp types internal to the low level driver.
950 * These qp types will not be visible at the IB core layer, so the
951 * IB_QPT_MAX usages should not be affected in the core layer
953 IB_QPT_RESERVED1
= 0x1000,
965 enum ib_qp_create_flags
{
966 IB_QP_CREATE_IPOIB_UD_LSO
= 1 << 0,
967 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK
= 1 << 1,
968 IB_QP_CREATE_CROSS_CHANNEL
= 1 << 2,
969 IB_QP_CREATE_MANAGED_SEND
= 1 << 3,
970 IB_QP_CREATE_MANAGED_RECV
= 1 << 4,
971 IB_QP_CREATE_NETIF_QP
= 1 << 5,
972 IB_QP_CREATE_SIGNATURE_EN
= 1 << 6,
973 IB_QP_CREATE_USE_GFP_NOIO
= 1 << 7,
974 /* reserve bits 26-31 for low level drivers' internal use */
975 IB_QP_CREATE_RESERVED_START
= 1 << 26,
976 IB_QP_CREATE_RESERVED_END
= 1 << 31,
980 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
981 * callback to destroy the passed in QP.
984 struct ib_qp_init_attr
{
985 void (*event_handler
)(struct ib_event
*, void *);
987 struct ib_cq
*send_cq
;
988 struct ib_cq
*recv_cq
;
990 struct ib_xrcd
*xrcd
; /* XRC TGT QPs only */
991 struct ib_qp_cap cap
;
992 enum ib_sig_type sq_sig_type
;
993 enum ib_qp_type qp_type
;
994 enum ib_qp_create_flags create_flags
;
995 u8 port_num
; /* special QP types only */
998 struct ib_qp_open_attr
{
999 void (*event_handler
)(struct ib_event
*, void *);
1002 enum ib_qp_type qp_type
;
1005 enum ib_rnr_timeout
{
1006 IB_RNR_TIMER_655_36
= 0,
1007 IB_RNR_TIMER_000_01
= 1,
1008 IB_RNR_TIMER_000_02
= 2,
1009 IB_RNR_TIMER_000_03
= 3,
1010 IB_RNR_TIMER_000_04
= 4,
1011 IB_RNR_TIMER_000_06
= 5,
1012 IB_RNR_TIMER_000_08
= 6,
1013 IB_RNR_TIMER_000_12
= 7,
1014 IB_RNR_TIMER_000_16
= 8,
1015 IB_RNR_TIMER_000_24
= 9,
1016 IB_RNR_TIMER_000_32
= 10,
1017 IB_RNR_TIMER_000_48
= 11,
1018 IB_RNR_TIMER_000_64
= 12,
1019 IB_RNR_TIMER_000_96
= 13,
1020 IB_RNR_TIMER_001_28
= 14,
1021 IB_RNR_TIMER_001_92
= 15,
1022 IB_RNR_TIMER_002_56
= 16,
1023 IB_RNR_TIMER_003_84
= 17,
1024 IB_RNR_TIMER_005_12
= 18,
1025 IB_RNR_TIMER_007_68
= 19,
1026 IB_RNR_TIMER_010_24
= 20,
1027 IB_RNR_TIMER_015_36
= 21,
1028 IB_RNR_TIMER_020_48
= 22,
1029 IB_RNR_TIMER_030_72
= 23,
1030 IB_RNR_TIMER_040_96
= 24,
1031 IB_RNR_TIMER_061_44
= 25,
1032 IB_RNR_TIMER_081_92
= 26,
1033 IB_RNR_TIMER_122_88
= 27,
1034 IB_RNR_TIMER_163_84
= 28,
1035 IB_RNR_TIMER_245_76
= 29,
1036 IB_RNR_TIMER_327_68
= 30,
1037 IB_RNR_TIMER_491_52
= 31
1040 enum ib_qp_attr_mask
{
1042 IB_QP_CUR_STATE
= (1<<1),
1043 IB_QP_EN_SQD_ASYNC_NOTIFY
= (1<<2),
1044 IB_QP_ACCESS_FLAGS
= (1<<3),
1045 IB_QP_PKEY_INDEX
= (1<<4),
1046 IB_QP_PORT
= (1<<5),
1047 IB_QP_QKEY
= (1<<6),
1049 IB_QP_PATH_MTU
= (1<<8),
1050 IB_QP_TIMEOUT
= (1<<9),
1051 IB_QP_RETRY_CNT
= (1<<10),
1052 IB_QP_RNR_RETRY
= (1<<11),
1053 IB_QP_RQ_PSN
= (1<<12),
1054 IB_QP_MAX_QP_RD_ATOMIC
= (1<<13),
1055 IB_QP_ALT_PATH
= (1<<14),
1056 IB_QP_MIN_RNR_TIMER
= (1<<15),
1057 IB_QP_SQ_PSN
= (1<<16),
1058 IB_QP_MAX_DEST_RD_ATOMIC
= (1<<17),
1059 IB_QP_PATH_MIG_STATE
= (1<<18),
1060 IB_QP_CAP
= (1<<19),
1061 IB_QP_DEST_QPN
= (1<<20),
1062 IB_QP_RESERVED1
= (1<<21),
1063 IB_QP_RESERVED2
= (1<<22),
1064 IB_QP_RESERVED3
= (1<<23),
1065 IB_QP_RESERVED4
= (1<<24),
1090 enum ib_qp_state qp_state
;
1091 enum ib_qp_state cur_qp_state
;
1092 enum ib_mtu path_mtu
;
1093 enum ib_mig_state path_mig_state
;
1098 int qp_access_flags
;
1099 struct ib_qp_cap cap
;
1100 struct ib_ah_attr ah_attr
;
1101 struct ib_ah_attr alt_ah_attr
;
1104 u8 en_sqd_async_notify
;
1107 u8 max_dest_rd_atomic
;
1119 IB_WR_RDMA_WRITE_WITH_IMM
,
1121 IB_WR_SEND_WITH_IMM
,
1123 IB_WR_ATOMIC_CMP_AND_SWP
,
1124 IB_WR_ATOMIC_FETCH_AND_ADD
,
1126 IB_WR_SEND_WITH_INV
,
1127 IB_WR_RDMA_READ_WITH_INV
,
1130 IB_WR_MASKED_ATOMIC_CMP_AND_SWP
,
1131 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD
,
1133 /* reserve values for low level drivers' internal use.
1134 * These values will not be used at all in the ib core layer.
1136 IB_WR_RESERVED1
= 0xf0,
1148 enum ib_send_flags
{
1150 IB_SEND_SIGNALED
= (1<<1),
1151 IB_SEND_SOLICITED
= (1<<2),
1152 IB_SEND_INLINE
= (1<<3),
1153 IB_SEND_IP_CSUM
= (1<<4),
1155 /* reserve bits 26-31 for low level drivers' internal use */
1156 IB_SEND_RESERVED_START
= (1 << 26),
1157 IB_SEND_RESERVED_END
= (1 << 31),
1167 void (*done
)(struct ib_cq
*cq
, struct ib_wc
*wc
);
1171 struct ib_send_wr
*next
;
1174 struct ib_cqe
*wr_cqe
;
1176 struct ib_sge
*sg_list
;
1178 enum ib_wr_opcode opcode
;
1182 u32 invalidate_rkey
;
1187 struct ib_send_wr wr
;
1192 static inline struct ib_rdma_wr
*rdma_wr(struct ib_send_wr
*wr
)
1194 return container_of(wr
, struct ib_rdma_wr
, wr
);
1197 struct ib_atomic_wr
{
1198 struct ib_send_wr wr
;
1202 u64 compare_add_mask
;
1207 static inline struct ib_atomic_wr
*atomic_wr(struct ib_send_wr
*wr
)
1209 return container_of(wr
, struct ib_atomic_wr
, wr
);
1213 struct ib_send_wr wr
;
1220 u16 pkey_index
; /* valid for GSI only */
1221 u8 port_num
; /* valid for DR SMPs on switch only */
1224 static inline struct ib_ud_wr
*ud_wr(struct ib_send_wr
*wr
)
1226 return container_of(wr
, struct ib_ud_wr
, wr
);
1230 struct ib_send_wr wr
;
1236 static inline struct ib_reg_wr
*reg_wr(struct ib_send_wr
*wr
)
1238 return container_of(wr
, struct ib_reg_wr
, wr
);
1241 struct ib_sig_handover_wr
{
1242 struct ib_send_wr wr
;
1243 struct ib_sig_attrs
*sig_attrs
;
1244 struct ib_mr
*sig_mr
;
1246 struct ib_sge
*prot
;
1249 static inline struct ib_sig_handover_wr
*sig_handover_wr(struct ib_send_wr
*wr
)
1251 return container_of(wr
, struct ib_sig_handover_wr
, wr
);
1255 struct ib_recv_wr
*next
;
1258 struct ib_cqe
*wr_cqe
;
1260 struct ib_sge
*sg_list
;
1264 enum ib_access_flags
{
1265 IB_ACCESS_LOCAL_WRITE
= 1,
1266 IB_ACCESS_REMOTE_WRITE
= (1<<1),
1267 IB_ACCESS_REMOTE_READ
= (1<<2),
1268 IB_ACCESS_REMOTE_ATOMIC
= (1<<3),
1269 IB_ACCESS_MW_BIND
= (1<<4),
1270 IB_ZERO_BASED
= (1<<5),
1271 IB_ACCESS_ON_DEMAND
= (1<<6),
1275 * XXX: these are apparently used for ->rereg_user_mr, no idea why they
1276 * are hidden here instead of a uapi header!
1278 enum ib_mr_rereg_flags
{
1279 IB_MR_REREG_TRANS
= 1,
1280 IB_MR_REREG_PD
= (1<<1),
1281 IB_MR_REREG_ACCESS
= (1<<2),
1282 IB_MR_REREG_SUPPORTED
= ((IB_MR_REREG_ACCESS
<< 1) - 1)
1285 struct ib_fmr_attr
{
1293 struct ib_ucontext
{
1294 struct ib_device
*device
;
1295 struct list_head pd_list
;
1296 struct list_head mr_list
;
1297 struct list_head mw_list
;
1298 struct list_head cq_list
;
1299 struct list_head qp_list
;
1300 struct list_head srq_list
;
1301 struct list_head ah_list
;
1302 struct list_head xrcd_list
;
1303 struct list_head rule_list
;
1307 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1308 struct rb_root umem_tree
;
1310 * Protects .umem_rbroot and tree, as well as odp_mrs_count and
1311 * mmu notifiers registration.
1313 struct rw_semaphore umem_rwsem
;
1314 void (*invalidate_range
)(struct ib_umem
*umem
,
1315 unsigned long start
, unsigned long end
);
1317 struct mmu_notifier mn
;
1318 atomic_t notifier_count
;
1319 /* A list of umems that don't have private mmu notifier counters yet. */
1320 struct list_head no_private_counters
;
1326 u64 user_handle
; /* handle given to us by userspace */
1327 struct ib_ucontext
*context
; /* associated user context */
1328 void *object
; /* containing object */
1329 struct list_head list
; /* link to context's list */
1330 int id
; /* index into kernel idr */
1332 struct rw_semaphore mutex
; /* protects .live */
1333 struct rcu_head rcu
; /* kfree_rcu() overhead */
1338 const void __user
*inbuf
;
1339 void __user
*outbuf
;
1346 struct ib_device
*device
;
1347 struct ib_uobject
*uobject
;
1348 atomic_t usecnt
; /* count all resources */
1349 struct ib_mr
*local_mr
;
1353 struct ib_device
*device
;
1354 atomic_t usecnt
; /* count all exposed resources */
1355 struct inode
*inode
;
1357 struct mutex tgt_qp_mutex
;
1358 struct list_head tgt_qp_list
;
1362 struct ib_device
*device
;
1364 struct ib_uobject
*uobject
;
1367 typedef void (*ib_comp_handler
)(struct ib_cq
*cq
, void *cq_context
);
1369 enum ib_poll_context
{
1370 IB_POLL_DIRECT
, /* caller context, no hw completions */
1371 IB_POLL_SOFTIRQ
, /* poll from softirq context */
1372 IB_POLL_WORKQUEUE
, /* poll from workqueue */
1376 struct ib_device
*device
;
1377 struct ib_uobject
*uobject
;
1378 ib_comp_handler comp_handler
;
1379 void (*event_handler
)(struct ib_event
*, void *);
1382 atomic_t usecnt
; /* count number of work queues */
1383 enum ib_poll_context poll_ctx
;
1386 struct irq_poll iop
;
1387 struct work_struct work
;
1392 struct ib_device
*device
;
1394 struct ib_uobject
*uobject
;
1395 void (*event_handler
)(struct ib_event
*, void *);
1397 enum ib_srq_type srq_type
;
1402 struct ib_xrcd
*xrcd
;
1410 struct ib_device
*device
;
1412 struct ib_cq
*send_cq
;
1413 struct ib_cq
*recv_cq
;
1415 struct ib_xrcd
*xrcd
; /* XRC TGT QPs only */
1416 struct list_head xrcd_list
;
1417 /* count times opened, mcast attaches, flow attaches */
1419 struct list_head open_list
;
1420 struct ib_qp
*real_qp
;
1421 struct ib_uobject
*uobject
;
1422 void (*event_handler
)(struct ib_event
*, void *);
1425 enum ib_qp_type qp_type
;
1429 struct ib_device
*device
;
1431 struct ib_uobject
*uobject
;
1436 unsigned int page_size
;
1440 struct ib_device
*device
;
1442 struct ib_uobject
*uobject
;
1444 enum ib_mw_type type
;
1448 struct ib_device
*device
;
1450 struct list_head list
;
1455 /* Supported steering options */
1456 enum ib_flow_attr_type
{
1457 /* steering according to rule specifications */
1458 IB_FLOW_ATTR_NORMAL
= 0x0,
1459 /* default unicast and multicast rule -
1460 * receive all Eth traffic which isn't steered to any QP
1462 IB_FLOW_ATTR_ALL_DEFAULT
= 0x1,
1463 /* default multicast rule -
1464 * receive all Eth multicast traffic which isn't steered to any QP
1466 IB_FLOW_ATTR_MC_DEFAULT
= 0x2,
1467 /* sniffer rule - receive all port traffic */
1468 IB_FLOW_ATTR_SNIFFER
= 0x3
1471 /* Supported steering header types */
1472 enum ib_flow_spec_type
{
1474 IB_FLOW_SPEC_ETH
= 0x20,
1475 IB_FLOW_SPEC_IB
= 0x22,
1477 IB_FLOW_SPEC_IPV4
= 0x30,
1479 IB_FLOW_SPEC_TCP
= 0x40,
1480 IB_FLOW_SPEC_UDP
= 0x41
1482 #define IB_FLOW_SPEC_LAYER_MASK 0xF0
1483 #define IB_FLOW_SPEC_SUPPORT_LAYERS 4
1485 /* Flow steering rule priority is set according to it's domain.
1486 * Lower domain value means higher priority.
1488 enum ib_flow_domain
{
1489 IB_FLOW_DOMAIN_USER
,
1490 IB_FLOW_DOMAIN_ETHTOOL
,
1493 IB_FLOW_DOMAIN_NUM
/* Must be last */
1496 enum ib_flow_flags
{
1497 IB_FLOW_ATTR_FLAGS_DONT_TRAP
= 1UL << 1, /* Continue match, no steal */
1498 IB_FLOW_ATTR_FLAGS_RESERVED
= 1UL << 2 /* Must be last */
1501 struct ib_flow_eth_filter
{
1508 struct ib_flow_spec_eth
{
1509 enum ib_flow_spec_type type
;
1511 struct ib_flow_eth_filter val
;
1512 struct ib_flow_eth_filter mask
;
1515 struct ib_flow_ib_filter
{
1520 struct ib_flow_spec_ib
{
1521 enum ib_flow_spec_type type
;
1523 struct ib_flow_ib_filter val
;
1524 struct ib_flow_ib_filter mask
;
1527 struct ib_flow_ipv4_filter
{
1532 struct ib_flow_spec_ipv4
{
1533 enum ib_flow_spec_type type
;
1535 struct ib_flow_ipv4_filter val
;
1536 struct ib_flow_ipv4_filter mask
;
1539 struct ib_flow_tcp_udp_filter
{
1544 struct ib_flow_spec_tcp_udp
{
1545 enum ib_flow_spec_type type
;
1547 struct ib_flow_tcp_udp_filter val
;
1548 struct ib_flow_tcp_udp_filter mask
;
1551 union ib_flow_spec
{
1553 enum ib_flow_spec_type type
;
1556 struct ib_flow_spec_eth eth
;
1557 struct ib_flow_spec_ib ib
;
1558 struct ib_flow_spec_ipv4 ipv4
;
1559 struct ib_flow_spec_tcp_udp tcp_udp
;
1562 struct ib_flow_attr
{
1563 enum ib_flow_attr_type type
;
1569 /* Following are the optional layers according to user request
1570 * struct ib_flow_spec_xxx
1571 * struct ib_flow_spec_yyy
1577 struct ib_uobject
*uobject
;
1583 enum ib_process_mad_flags
{
1584 IB_MAD_IGNORE_MKEY
= 1,
1585 IB_MAD_IGNORE_BKEY
= 2,
1586 IB_MAD_IGNORE_ALL
= IB_MAD_IGNORE_MKEY
| IB_MAD_IGNORE_BKEY
1589 enum ib_mad_result
{
1590 IB_MAD_RESULT_FAILURE
= 0, /* (!SUCCESS is the important flag) */
1591 IB_MAD_RESULT_SUCCESS
= 1 << 0, /* MAD was successfully processed */
1592 IB_MAD_RESULT_REPLY
= 1 << 1, /* Reply packet needs to be sent */
1593 IB_MAD_RESULT_CONSUMED
= 1 << 2 /* Packet consumed: stop processing */
1596 #define IB_DEVICE_NAME_MAX 64
1600 struct ib_event_handler event_handler
;
1601 struct ib_pkey_cache
**pkey_cache
;
1602 struct ib_gid_table
**gid_cache
;
1606 struct ib_dma_mapping_ops
{
1607 int (*mapping_error
)(struct ib_device
*dev
,
1609 u64 (*map_single
)(struct ib_device
*dev
,
1610 void *ptr
, size_t size
,
1611 enum dma_data_direction direction
);
1612 void (*unmap_single
)(struct ib_device
*dev
,
1613 u64 addr
, size_t size
,
1614 enum dma_data_direction direction
);
1615 u64 (*map_page
)(struct ib_device
*dev
,
1616 struct page
*page
, unsigned long offset
,
1618 enum dma_data_direction direction
);
1619 void (*unmap_page
)(struct ib_device
*dev
,
1620 u64 addr
, size_t size
,
1621 enum dma_data_direction direction
);
1622 int (*map_sg
)(struct ib_device
*dev
,
1623 struct scatterlist
*sg
, int nents
,
1624 enum dma_data_direction direction
);
1625 void (*unmap_sg
)(struct ib_device
*dev
,
1626 struct scatterlist
*sg
, int nents
,
1627 enum dma_data_direction direction
);
1628 void (*sync_single_for_cpu
)(struct ib_device
*dev
,
1631 enum dma_data_direction dir
);
1632 void (*sync_single_for_device
)(struct ib_device
*dev
,
1635 enum dma_data_direction dir
);
1636 void *(*alloc_coherent
)(struct ib_device
*dev
,
1640 void (*free_coherent
)(struct ib_device
*dev
,
1641 size_t size
, void *cpu_addr
,
1647 struct ib_port_immutable
{
1655 struct device
*dma_device
;
1657 char name
[IB_DEVICE_NAME_MAX
];
1659 struct list_head event_handler_list
;
1660 spinlock_t event_handler_lock
;
1662 spinlock_t client_data_lock
;
1663 struct list_head core_list
;
1664 /* Access to the client_data_list is protected by the client_data_lock
1665 * spinlock and the lists_rwsem read-write semaphore */
1666 struct list_head client_data_list
;
1668 struct ib_cache cache
;
1670 * port_immutable is indexed by port number
1672 struct ib_port_immutable
*port_immutable
;
1674 int num_comp_vectors
;
1676 struct iw_cm_verbs
*iwcm
;
1678 int (*get_protocol_stats
)(struct ib_device
*device
,
1679 union rdma_protocol_stats
*stats
);
1680 int (*query_device
)(struct ib_device
*device
,
1681 struct ib_device_attr
*device_attr
,
1682 struct ib_udata
*udata
);
1683 int (*query_port
)(struct ib_device
*device
,
1685 struct ib_port_attr
*port_attr
);
1686 enum rdma_link_layer (*get_link_layer
)(struct ib_device
*device
,
1688 /* When calling get_netdev, the HW vendor's driver should return the
1689 * net device of device @device at port @port_num or NULL if such
1690 * a net device doesn't exist. The vendor driver should call dev_hold
1691 * on this net device. The HW vendor's device driver must guarantee
1692 * that this function returns NULL before the net device reaches
1693 * NETDEV_UNREGISTER_FINAL state.
1695 struct net_device
*(*get_netdev
)(struct ib_device
*device
,
1697 int (*query_gid
)(struct ib_device
*device
,
1698 u8 port_num
, int index
,
1700 /* When calling add_gid, the HW vendor's driver should
1701 * add the gid of device @device at gid index @index of
1702 * port @port_num to be @gid. Meta-info of that gid (for example,
1703 * the network device related to this gid is available
1704 * at @attr. @context allows the HW vendor driver to store extra
1705 * information together with a GID entry. The HW vendor may allocate
1706 * memory to contain this information and store it in @context when a
1707 * new GID entry is written to. Params are consistent until the next
1708 * call of add_gid or delete_gid. The function should return 0 on
1709 * success or error otherwise. The function could be called
1710 * concurrently for different ports. This function is only called
1711 * when roce_gid_table is used.
1713 int (*add_gid
)(struct ib_device
*device
,
1716 const union ib_gid
*gid
,
1717 const struct ib_gid_attr
*attr
,
1719 /* When calling del_gid, the HW vendor's driver should delete the
1720 * gid of device @device at gid index @index of port @port_num.
1721 * Upon the deletion of a GID entry, the HW vendor must free any
1722 * allocated memory. The caller will clear @context afterwards.
1723 * This function is only called when roce_gid_table is used.
1725 int (*del_gid
)(struct ib_device
*device
,
1729 int (*query_pkey
)(struct ib_device
*device
,
1730 u8 port_num
, u16 index
, u16
*pkey
);
1731 int (*modify_device
)(struct ib_device
*device
,
1732 int device_modify_mask
,
1733 struct ib_device_modify
*device_modify
);
1734 int (*modify_port
)(struct ib_device
*device
,
1735 u8 port_num
, int port_modify_mask
,
1736 struct ib_port_modify
*port_modify
);
1737 struct ib_ucontext
* (*alloc_ucontext
)(struct ib_device
*device
,
1738 struct ib_udata
*udata
);
1739 int (*dealloc_ucontext
)(struct ib_ucontext
*context
);
1740 int (*mmap
)(struct ib_ucontext
*context
,
1741 struct vm_area_struct
*vma
);
1742 struct ib_pd
* (*alloc_pd
)(struct ib_device
*device
,
1743 struct ib_ucontext
*context
,
1744 struct ib_udata
*udata
);
1745 int (*dealloc_pd
)(struct ib_pd
*pd
);
1746 struct ib_ah
* (*create_ah
)(struct ib_pd
*pd
,
1747 struct ib_ah_attr
*ah_attr
);
1748 int (*modify_ah
)(struct ib_ah
*ah
,
1749 struct ib_ah_attr
*ah_attr
);
1750 int (*query_ah
)(struct ib_ah
*ah
,
1751 struct ib_ah_attr
*ah_attr
);
1752 int (*destroy_ah
)(struct ib_ah
*ah
);
1753 struct ib_srq
* (*create_srq
)(struct ib_pd
*pd
,
1754 struct ib_srq_init_attr
*srq_init_attr
,
1755 struct ib_udata
*udata
);
1756 int (*modify_srq
)(struct ib_srq
*srq
,
1757 struct ib_srq_attr
*srq_attr
,
1758 enum ib_srq_attr_mask srq_attr_mask
,
1759 struct ib_udata
*udata
);
1760 int (*query_srq
)(struct ib_srq
*srq
,
1761 struct ib_srq_attr
*srq_attr
);
1762 int (*destroy_srq
)(struct ib_srq
*srq
);
1763 int (*post_srq_recv
)(struct ib_srq
*srq
,
1764 struct ib_recv_wr
*recv_wr
,
1765 struct ib_recv_wr
**bad_recv_wr
);
1766 struct ib_qp
* (*create_qp
)(struct ib_pd
*pd
,
1767 struct ib_qp_init_attr
*qp_init_attr
,
1768 struct ib_udata
*udata
);
1769 int (*modify_qp
)(struct ib_qp
*qp
,
1770 struct ib_qp_attr
*qp_attr
,
1772 struct ib_udata
*udata
);
1773 int (*query_qp
)(struct ib_qp
*qp
,
1774 struct ib_qp_attr
*qp_attr
,
1776 struct ib_qp_init_attr
*qp_init_attr
);
1777 int (*destroy_qp
)(struct ib_qp
*qp
);
1778 int (*post_send
)(struct ib_qp
*qp
,
1779 struct ib_send_wr
*send_wr
,
1780 struct ib_send_wr
**bad_send_wr
);
1781 int (*post_recv
)(struct ib_qp
*qp
,
1782 struct ib_recv_wr
*recv_wr
,
1783 struct ib_recv_wr
**bad_recv_wr
);
1784 struct ib_cq
* (*create_cq
)(struct ib_device
*device
,
1785 const struct ib_cq_init_attr
*attr
,
1786 struct ib_ucontext
*context
,
1787 struct ib_udata
*udata
);
1788 int (*modify_cq
)(struct ib_cq
*cq
, u16 cq_count
,
1790 int (*destroy_cq
)(struct ib_cq
*cq
);
1791 int (*resize_cq
)(struct ib_cq
*cq
, int cqe
,
1792 struct ib_udata
*udata
);
1793 int (*poll_cq
)(struct ib_cq
*cq
, int num_entries
,
1795 int (*peek_cq
)(struct ib_cq
*cq
, int wc_cnt
);
1796 int (*req_notify_cq
)(struct ib_cq
*cq
,
1797 enum ib_cq_notify_flags flags
);
1798 int (*req_ncomp_notif
)(struct ib_cq
*cq
,
1800 struct ib_mr
* (*get_dma_mr
)(struct ib_pd
*pd
,
1801 int mr_access_flags
);
1802 struct ib_mr
* (*reg_user_mr
)(struct ib_pd
*pd
,
1803 u64 start
, u64 length
,
1805 int mr_access_flags
,
1806 struct ib_udata
*udata
);
1807 int (*rereg_user_mr
)(struct ib_mr
*mr
,
1809 u64 start
, u64 length
,
1811 int mr_access_flags
,
1813 struct ib_udata
*udata
);
1814 int (*dereg_mr
)(struct ib_mr
*mr
);
1815 struct ib_mr
* (*alloc_mr
)(struct ib_pd
*pd
,
1816 enum ib_mr_type mr_type
,
1818 int (*map_mr_sg
)(struct ib_mr
*mr
,
1819 struct scatterlist
*sg
,
1821 struct ib_mw
* (*alloc_mw
)(struct ib_pd
*pd
,
1822 enum ib_mw_type type
,
1823 struct ib_udata
*udata
);
1824 int (*dealloc_mw
)(struct ib_mw
*mw
);
1825 struct ib_fmr
* (*alloc_fmr
)(struct ib_pd
*pd
,
1826 int mr_access_flags
,
1827 struct ib_fmr_attr
*fmr_attr
);
1828 int (*map_phys_fmr
)(struct ib_fmr
*fmr
,
1829 u64
*page_list
, int list_len
,
1831 int (*unmap_fmr
)(struct list_head
*fmr_list
);
1832 int (*dealloc_fmr
)(struct ib_fmr
*fmr
);
1833 int (*attach_mcast
)(struct ib_qp
*qp
,
1836 int (*detach_mcast
)(struct ib_qp
*qp
,
1839 int (*process_mad
)(struct ib_device
*device
,
1840 int process_mad_flags
,
1842 const struct ib_wc
*in_wc
,
1843 const struct ib_grh
*in_grh
,
1844 const struct ib_mad_hdr
*in_mad
,
1846 struct ib_mad_hdr
*out_mad
,
1847 size_t *out_mad_size
,
1848 u16
*out_mad_pkey_index
);
1849 struct ib_xrcd
* (*alloc_xrcd
)(struct ib_device
*device
,
1850 struct ib_ucontext
*ucontext
,
1851 struct ib_udata
*udata
);
1852 int (*dealloc_xrcd
)(struct ib_xrcd
*xrcd
);
1853 struct ib_flow
* (*create_flow
)(struct ib_qp
*qp
,
1857 int (*destroy_flow
)(struct ib_flow
*flow_id
);
1858 int (*check_mr_status
)(struct ib_mr
*mr
, u32 check_mask
,
1859 struct ib_mr_status
*mr_status
);
1860 void (*disassociate_ucontext
)(struct ib_ucontext
*ibcontext
);
1861 void (*drain_rq
)(struct ib_qp
*qp
);
1862 void (*drain_sq
)(struct ib_qp
*qp
);
1864 struct ib_dma_mapping_ops
*dma_ops
;
1866 struct module
*owner
;
1868 struct kobject
*ports_parent
;
1869 struct list_head port_list
;
1872 IB_DEV_UNINITIALIZED
,
1878 u64 uverbs_cmd_mask
;
1879 u64 uverbs_ex_cmd_mask
;
1887 struct ib_device_attr attrs
;
1890 * The following mandatory functions are used only at device
1891 * registration. Keep functions such as these at the end of this
1892 * structure to avoid cache line misses when accessing struct ib_device
1895 int (*get_port_immutable
)(struct ib_device
*, u8
, struct ib_port_immutable
*);
1900 void (*add
) (struct ib_device
*);
1901 void (*remove
)(struct ib_device
*, void *client_data
);
1903 /* Returns the net_dev belonging to this ib_client and matching the
1905 * @dev: An RDMA device that the net_dev use for communication.
1906 * @port: A physical port number on the RDMA device.
1907 * @pkey: P_Key that the net_dev uses if applicable.
1908 * @gid: A GID that the net_dev uses to communicate.
1909 * @addr: An IP address the net_dev is configured with.
1910 * @client_data: The device's client data set by ib_set_client_data().
1912 * An ib_client that implements a net_dev on top of RDMA devices
1913 * (such as IP over IB) should implement this callback, allowing the
1914 * rdma_cm module to find the right net_dev for a given request.
1916 * The caller is responsible for calling dev_put on the returned
1918 struct net_device
*(*get_net_dev_by_params
)(
1919 struct ib_device
*dev
,
1922 const union ib_gid
*gid
,
1923 const struct sockaddr
*addr
,
1925 struct list_head list
;
1928 struct ib_device
*ib_alloc_device(size_t size
);
1929 void ib_dealloc_device(struct ib_device
*device
);
1931 int ib_register_device(struct ib_device
*device
,
1932 int (*port_callback
)(struct ib_device
*,
1933 u8
, struct kobject
*));
1934 void ib_unregister_device(struct ib_device
*device
);
1936 int ib_register_client (struct ib_client
*client
);
1937 void ib_unregister_client(struct ib_client
*client
);
1939 void *ib_get_client_data(struct ib_device
*device
, struct ib_client
*client
);
1940 void ib_set_client_data(struct ib_device
*device
, struct ib_client
*client
,
1943 static inline int ib_copy_from_udata(void *dest
, struct ib_udata
*udata
, size_t len
)
1945 return copy_from_user(dest
, udata
->inbuf
, len
) ? -EFAULT
: 0;
1948 static inline int ib_copy_to_udata(struct ib_udata
*udata
, void *src
, size_t len
)
1950 return copy_to_user(udata
->outbuf
, src
, len
) ? -EFAULT
: 0;
1953 static inline bool ib_is_udata_cleared(struct ib_udata
*udata
,
1957 const void __user
*p
= udata
->inbuf
+ offset
;
1961 if (len
> USHRT_MAX
)
1964 buf
= kmalloc(len
, GFP_KERNEL
);
1968 if (copy_from_user(buf
, p
, len
))
1971 ret
= !memchr_inv(buf
, 0, len
);
1979 * ib_modify_qp_is_ok - Check that the supplied attribute mask
1980 * contains all required attributes and no attributes not allowed for
1981 * the given QP state transition.
1982 * @cur_state: Current QP state
1983 * @next_state: Next QP state
1985 * @mask: Mask of supplied QP attributes
1986 * @ll : link layer of port
1988 * This function is a helper function that a low-level driver's
1989 * modify_qp method can use to validate the consumer's input. It
1990 * checks that cur_state and next_state are valid QP states, that a
1991 * transition from cur_state to next_state is allowed by the IB spec,
1992 * and that the attribute mask supplied is allowed for the transition.
1994 int ib_modify_qp_is_ok(enum ib_qp_state cur_state
, enum ib_qp_state next_state
,
1995 enum ib_qp_type type
, enum ib_qp_attr_mask mask
,
1996 enum rdma_link_layer ll
);
1998 int ib_register_event_handler (struct ib_event_handler
*event_handler
);
1999 int ib_unregister_event_handler(struct ib_event_handler
*event_handler
);
2000 void ib_dispatch_event(struct ib_event
*event
);
2002 int ib_query_port(struct ib_device
*device
,
2003 u8 port_num
, struct ib_port_attr
*port_attr
);
2005 enum rdma_link_layer
rdma_port_get_link_layer(struct ib_device
*device
,
2009 * rdma_cap_ib_switch - Check if the device is IB switch
2010 * @device: Device to check
2012 * Device driver is responsible for setting is_switch bit on
2013 * in ib_device structure at init time.
2015 * Return: true if the device is IB switch.
2017 static inline bool rdma_cap_ib_switch(const struct ib_device
*device
)
2019 return device
->is_switch
;
2023 * rdma_start_port - Return the first valid port number for the device
2026 * @device: Device to be checked
2028 * Return start port number
2030 static inline u8
rdma_start_port(const struct ib_device
*device
)
2032 return rdma_cap_ib_switch(device
) ? 0 : 1;
2036 * rdma_end_port - Return the last valid port number for the device
2039 * @device: Device to be checked
2041 * Return last port number
2043 static inline u8
rdma_end_port(const struct ib_device
*device
)
2045 return rdma_cap_ib_switch(device
) ? 0 : device
->phys_port_cnt
;
2048 static inline bool rdma_protocol_ib(const struct ib_device
*device
, u8 port_num
)
2050 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_PROT_IB
;
2053 static inline bool rdma_protocol_roce(const struct ib_device
*device
, u8 port_num
)
2055 return device
->port_immutable
[port_num
].core_cap_flags
&
2056 (RDMA_CORE_CAP_PROT_ROCE
| RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP
);
2059 static inline bool rdma_protocol_roce_udp_encap(const struct ib_device
*device
, u8 port_num
)
2061 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP
;
2064 static inline bool rdma_protocol_roce_eth_encap(const struct ib_device
*device
, u8 port_num
)
2066 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_PROT_ROCE
;
2069 static inline bool rdma_protocol_iwarp(const struct ib_device
*device
, u8 port_num
)
2071 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_PROT_IWARP
;
2074 static inline bool rdma_ib_or_roce(const struct ib_device
*device
, u8 port_num
)
2076 return rdma_protocol_ib(device
, port_num
) ||
2077 rdma_protocol_roce(device
, port_num
);
2081 * rdma_cap_ib_mad - Check if the port of a device supports Infiniband
2082 * Management Datagrams.
2083 * @device: Device to check
2084 * @port_num: Port number to check
2086 * Management Datagrams (MAD) are a required part of the InfiniBand
2087 * specification and are supported on all InfiniBand devices. A slightly
2088 * extended version are also supported on OPA interfaces.
2090 * Return: true if the port supports sending/receiving of MAD packets.
2092 static inline bool rdma_cap_ib_mad(const struct ib_device
*device
, u8 port_num
)
2094 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_IB_MAD
;
2098 * rdma_cap_opa_mad - Check if the port of device provides support for OPA
2099 * Management Datagrams.
2100 * @device: Device to check
2101 * @port_num: Port number to check
2103 * Intel OmniPath devices extend and/or replace the InfiniBand Management
2104 * datagrams with their own versions. These OPA MADs share many but not all of
2105 * the characteristics of InfiniBand MADs.
2107 * OPA MADs differ in the following ways:
2109 * 1) MADs are variable size up to 2K
2110 * IBTA defined MADs remain fixed at 256 bytes
2111 * 2) OPA SMPs must carry valid PKeys
2112 * 3) OPA SMP packets are a different format
2114 * Return: true if the port supports OPA MAD packet formats.
2116 static inline bool rdma_cap_opa_mad(struct ib_device
*device
, u8 port_num
)
2118 return (device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_OPA_MAD
)
2119 == RDMA_CORE_CAP_OPA_MAD
;
2123 * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband
2124 * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI).
2125 * @device: Device to check
2126 * @port_num: Port number to check
2128 * Each InfiniBand node is required to provide a Subnet Management Agent
2129 * that the subnet manager can access. Prior to the fabric being fully
2130 * configured by the subnet manager, the SMA is accessed via a well known
2131 * interface called the Subnet Management Interface (SMI). This interface
2132 * uses directed route packets to communicate with the SM to get around the
2133 * chicken and egg problem of the SM needing to know what's on the fabric
2134 * in order to configure the fabric, and needing to configure the fabric in
2135 * order to send packets to the devices on the fabric. These directed
2136 * route packets do not need the fabric fully configured in order to reach
2137 * their destination. The SMI is the only method allowed to send
2138 * directed route packets on an InfiniBand fabric.
2140 * Return: true if the port provides an SMI.
2142 static inline bool rdma_cap_ib_smi(const struct ib_device
*device
, u8 port_num
)
2144 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_IB_SMI
;
2148 * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband
2149 * Communication Manager.
2150 * @device: Device to check
2151 * @port_num: Port number to check
2153 * The InfiniBand Communication Manager is one of many pre-defined General
2154 * Service Agents (GSA) that are accessed via the General Service
2155 * Interface (GSI). It's role is to facilitate establishment of connections
2156 * between nodes as well as other management related tasks for established
2159 * Return: true if the port supports an IB CM (this does not guarantee that
2160 * a CM is actually running however).
2162 static inline bool rdma_cap_ib_cm(const struct ib_device
*device
, u8 port_num
)
2164 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_IB_CM
;
2168 * rdma_cap_iw_cm - Check if the port of device has the capability IWARP
2169 * Communication Manager.
2170 * @device: Device to check
2171 * @port_num: Port number to check
2173 * Similar to above, but specific to iWARP connections which have a different
2174 * managment protocol than InfiniBand.
2176 * Return: true if the port supports an iWARP CM (this does not guarantee that
2177 * a CM is actually running however).
2179 static inline bool rdma_cap_iw_cm(const struct ib_device
*device
, u8 port_num
)
2181 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_IW_CM
;
2185 * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband
2186 * Subnet Administration.
2187 * @device: Device to check
2188 * @port_num: Port number to check
2190 * An InfiniBand Subnet Administration (SA) service is a pre-defined General
2191 * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand
2192 * fabrics, devices should resolve routes to other hosts by contacting the
2193 * SA to query the proper route.
2195 * Return: true if the port should act as a client to the fabric Subnet
2196 * Administration interface. This does not imply that the SA service is
2199 static inline bool rdma_cap_ib_sa(const struct ib_device
*device
, u8 port_num
)
2201 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_IB_SA
;
2205 * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband
2207 * @device: Device to check
2208 * @port_num: Port number to check
2210 * InfiniBand multicast registration is more complex than normal IPv4 or
2211 * IPv6 multicast registration. Each Host Channel Adapter must register
2212 * with the Subnet Manager when it wishes to join a multicast group. It
2213 * should do so only once regardless of how many queue pairs it subscribes
2214 * to this group. And it should leave the group only after all queue pairs
2215 * attached to the group have been detached.
2217 * Return: true if the port must undertake the additional adminstrative
2218 * overhead of registering/unregistering with the SM and tracking of the
2219 * total number of queue pairs attached to the multicast group.
2221 static inline bool rdma_cap_ib_mcast(const struct ib_device
*device
, u8 port_num
)
2223 return rdma_cap_ib_sa(device
, port_num
);
2227 * rdma_cap_af_ib - Check if the port of device has the capability
2228 * Native Infiniband Address.
2229 * @device: Device to check
2230 * @port_num: Port number to check
2232 * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default
2233 * GID. RoCE uses a different mechanism, but still generates a GID via
2234 * a prescribed mechanism and port specific data.
2236 * Return: true if the port uses a GID address to identify devices on the
2239 static inline bool rdma_cap_af_ib(const struct ib_device
*device
, u8 port_num
)
2241 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_AF_IB
;
2245 * rdma_cap_eth_ah - Check if the port of device has the capability
2246 * Ethernet Address Handle.
2247 * @device: Device to check
2248 * @port_num: Port number to check
2250 * RoCE is InfiniBand over Ethernet, and it uses a well defined technique
2251 * to fabricate GIDs over Ethernet/IP specific addresses native to the
2252 * port. Normally, packet headers are generated by the sending host
2253 * adapter, but when sending connectionless datagrams, we must manually
2254 * inject the proper headers for the fabric we are communicating over.
2256 * Return: true if we are running as a RoCE port and must force the
2257 * addition of a Global Route Header built from our Ethernet Address
2258 * Handle into our header list for connectionless packets.
2260 static inline bool rdma_cap_eth_ah(const struct ib_device
*device
, u8 port_num
)
2262 return device
->port_immutable
[port_num
].core_cap_flags
& RDMA_CORE_CAP_ETH_AH
;
2266 * rdma_max_mad_size - Return the max MAD size required by this RDMA Port.
2269 * @port_num: Port number
2271 * This MAD size includes the MAD headers and MAD payload. No other headers
2274 * Return the max MAD size required by the Port. Will return 0 if the port
2275 * does not support MADs
2277 static inline size_t rdma_max_mad_size(const struct ib_device
*device
, u8 port_num
)
2279 return device
->port_immutable
[port_num
].max_mad_size
;
2283 * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table
2284 * @device: Device to check
2285 * @port_num: Port number to check
2287 * RoCE GID table mechanism manages the various GIDs for a device.
2289 * NOTE: if allocating the port's GID table has failed, this call will still
2290 * return true, but any RoCE GID table API will fail.
2292 * Return: true if the port uses RoCE GID table mechanism in order to manage
2295 static inline bool rdma_cap_roce_gid_table(const struct ib_device
*device
,
2298 return rdma_protocol_roce(device
, port_num
) &&
2299 device
->add_gid
&& device
->del_gid
;
2302 int ib_query_gid(struct ib_device
*device
,
2303 u8 port_num
, int index
, union ib_gid
*gid
,
2304 struct ib_gid_attr
*attr
);
2306 int ib_query_pkey(struct ib_device
*device
,
2307 u8 port_num
, u16 index
, u16
*pkey
);
2309 int ib_modify_device(struct ib_device
*device
,
2310 int device_modify_mask
,
2311 struct ib_device_modify
*device_modify
);
2313 int ib_modify_port(struct ib_device
*device
,
2314 u8 port_num
, int port_modify_mask
,
2315 struct ib_port_modify
*port_modify
);
2317 int ib_find_gid(struct ib_device
*device
, union ib_gid
*gid
,
2318 enum ib_gid_type gid_type
, struct net_device
*ndev
,
2319 u8
*port_num
, u16
*index
);
2321 int ib_find_pkey(struct ib_device
*device
,
2322 u8 port_num
, u16 pkey
, u16
*index
);
2324 struct ib_pd
*ib_alloc_pd(struct ib_device
*device
);
2326 void ib_dealloc_pd(struct ib_pd
*pd
);
2329 * ib_create_ah - Creates an address handle for the given address vector.
2330 * @pd: The protection domain associated with the address handle.
2331 * @ah_attr: The attributes of the address vector.
2333 * The address handle is used to reference a local or global destination
2334 * in all UD QP post sends.
2336 struct ib_ah
*ib_create_ah(struct ib_pd
*pd
, struct ib_ah_attr
*ah_attr
);
2339 * ib_init_ah_from_wc - Initializes address handle attributes from a
2341 * @device: Device on which the received message arrived.
2342 * @port_num: Port on which the received message arrived.
2343 * @wc: Work completion associated with the received message.
2344 * @grh: References the received global route header. This parameter is
2345 * ignored unless the work completion indicates that the GRH is valid.
2346 * @ah_attr: Returned attributes that can be used when creating an address
2347 * handle for replying to the message.
2349 int ib_init_ah_from_wc(struct ib_device
*device
, u8 port_num
,
2350 const struct ib_wc
*wc
, const struct ib_grh
*grh
,
2351 struct ib_ah_attr
*ah_attr
);
2354 * ib_create_ah_from_wc - Creates an address handle associated with the
2355 * sender of the specified work completion.
2356 * @pd: The protection domain associated with the address handle.
2357 * @wc: Work completion information associated with a received message.
2358 * @grh: References the received global route header. This parameter is
2359 * ignored unless the work completion indicates that the GRH is valid.
2360 * @port_num: The outbound port number to associate with the address.
2362 * The address handle is used to reference a local or global destination
2363 * in all UD QP post sends.
2365 struct ib_ah
*ib_create_ah_from_wc(struct ib_pd
*pd
, const struct ib_wc
*wc
,
2366 const struct ib_grh
*grh
, u8 port_num
);
2369 * ib_modify_ah - Modifies the address vector associated with an address
2371 * @ah: The address handle to modify.
2372 * @ah_attr: The new address vector attributes to associate with the
2375 int ib_modify_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
);
2378 * ib_query_ah - Queries the address vector associated with an address
2380 * @ah: The address handle to query.
2381 * @ah_attr: The address vector attributes associated with the address
2384 int ib_query_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
);
2387 * ib_destroy_ah - Destroys an address handle.
2388 * @ah: The address handle to destroy.
2390 int ib_destroy_ah(struct ib_ah
*ah
);
2393 * ib_create_srq - Creates a SRQ associated with the specified protection
2395 * @pd: The protection domain associated with the SRQ.
2396 * @srq_init_attr: A list of initial attributes required to create the
2397 * SRQ. If SRQ creation succeeds, then the attributes are updated to
2398 * the actual capabilities of the created SRQ.
2400 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
2401 * requested size of the SRQ, and set to the actual values allocated
2402 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
2403 * will always be at least as large as the requested values.
2405 struct ib_srq
*ib_create_srq(struct ib_pd
*pd
,
2406 struct ib_srq_init_attr
*srq_init_attr
);
2409 * ib_modify_srq - Modifies the attributes for the specified SRQ.
2410 * @srq: The SRQ to modify.
2411 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
2412 * the current values of selected SRQ attributes are returned.
2413 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
2414 * are being modified.
2416 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
2417 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
2418 * the number of receives queued drops below the limit.
2420 int ib_modify_srq(struct ib_srq
*srq
,
2421 struct ib_srq_attr
*srq_attr
,
2422 enum ib_srq_attr_mask srq_attr_mask
);
2425 * ib_query_srq - Returns the attribute list and current values for the
2427 * @srq: The SRQ to query.
2428 * @srq_attr: The attributes of the specified SRQ.
2430 int ib_query_srq(struct ib_srq
*srq
,
2431 struct ib_srq_attr
*srq_attr
);
2434 * ib_destroy_srq - Destroys the specified SRQ.
2435 * @srq: The SRQ to destroy.
2437 int ib_destroy_srq(struct ib_srq
*srq
);
2440 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
2441 * @srq: The SRQ to post the work request on.
2442 * @recv_wr: A list of work requests to post on the receive queue.
2443 * @bad_recv_wr: On an immediate failure, this parameter will reference
2444 * the work request that failed to be posted on the QP.
2446 static inline int ib_post_srq_recv(struct ib_srq
*srq
,
2447 struct ib_recv_wr
*recv_wr
,
2448 struct ib_recv_wr
**bad_recv_wr
)
2450 return srq
->device
->post_srq_recv(srq
, recv_wr
, bad_recv_wr
);
2454 * ib_create_qp - Creates a QP associated with the specified protection
2456 * @pd: The protection domain associated with the QP.
2457 * @qp_init_attr: A list of initial attributes required to create the
2458 * QP. If QP creation succeeds, then the attributes are updated to
2459 * the actual capabilities of the created QP.
2461 struct ib_qp
*ib_create_qp(struct ib_pd
*pd
,
2462 struct ib_qp_init_attr
*qp_init_attr
);
2465 * ib_modify_qp - Modifies the attributes for the specified QP and then
2466 * transitions the QP to the given state.
2467 * @qp: The QP to modify.
2468 * @qp_attr: On input, specifies the QP attributes to modify. On output,
2469 * the current values of selected QP attributes are returned.
2470 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
2471 * are being modified.
2473 int ib_modify_qp(struct ib_qp
*qp
,
2474 struct ib_qp_attr
*qp_attr
,
2478 * ib_query_qp - Returns the attribute list and current values for the
2480 * @qp: The QP to query.
2481 * @qp_attr: The attributes of the specified QP.
2482 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
2483 * @qp_init_attr: Additional attributes of the selected QP.
2485 * The qp_attr_mask may be used to limit the query to gathering only the
2486 * selected attributes.
2488 int ib_query_qp(struct ib_qp
*qp
,
2489 struct ib_qp_attr
*qp_attr
,
2491 struct ib_qp_init_attr
*qp_init_attr
);
2494 * ib_destroy_qp - Destroys the specified QP.
2495 * @qp: The QP to destroy.
2497 int ib_destroy_qp(struct ib_qp
*qp
);
2500 * ib_open_qp - Obtain a reference to an existing sharable QP.
2501 * @xrcd - XRC domain
2502 * @qp_open_attr: Attributes identifying the QP to open.
2504 * Returns a reference to a sharable QP.
2506 struct ib_qp
*ib_open_qp(struct ib_xrcd
*xrcd
,
2507 struct ib_qp_open_attr
*qp_open_attr
);
2510 * ib_close_qp - Release an external reference to a QP.
2511 * @qp: The QP handle to release
2513 * The opened QP handle is released by the caller. The underlying
2514 * shared QP is not destroyed until all internal references are released.
2516 int ib_close_qp(struct ib_qp
*qp
);
2519 * ib_post_send - Posts a list of work requests to the send queue of
2521 * @qp: The QP to post the work request on.
2522 * @send_wr: A list of work requests to post on the send queue.
2523 * @bad_send_wr: On an immediate failure, this parameter will reference
2524 * the work request that failed to be posted on the QP.
2526 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
2527 * error is returned, the QP state shall not be affected,
2528 * ib_post_send() will return an immediate error after queueing any
2529 * earlier work requests in the list.
2531 static inline int ib_post_send(struct ib_qp
*qp
,
2532 struct ib_send_wr
*send_wr
,
2533 struct ib_send_wr
**bad_send_wr
)
2535 return qp
->device
->post_send(qp
, send_wr
, bad_send_wr
);
2539 * ib_post_recv - Posts a list of work requests to the receive queue of
2541 * @qp: The QP to post the work request on.
2542 * @recv_wr: A list of work requests to post on the receive queue.
2543 * @bad_recv_wr: On an immediate failure, this parameter will reference
2544 * the work request that failed to be posted on the QP.
2546 static inline int ib_post_recv(struct ib_qp
*qp
,
2547 struct ib_recv_wr
*recv_wr
,
2548 struct ib_recv_wr
**bad_recv_wr
)
2550 return qp
->device
->post_recv(qp
, recv_wr
, bad_recv_wr
);
2553 struct ib_cq
*ib_alloc_cq(struct ib_device
*dev
, void *private,
2554 int nr_cqe
, int comp_vector
, enum ib_poll_context poll_ctx
);
2555 void ib_free_cq(struct ib_cq
*cq
);
2556 int ib_process_cq_direct(struct ib_cq
*cq
, int budget
);
2559 * ib_create_cq - Creates a CQ on the specified device.
2560 * @device: The device on which to create the CQ.
2561 * @comp_handler: A user-specified callback that is invoked when a
2562 * completion event occurs on the CQ.
2563 * @event_handler: A user-specified callback that is invoked when an
2564 * asynchronous event not associated with a completion occurs on the CQ.
2565 * @cq_context: Context associated with the CQ returned to the user via
2566 * the associated completion and event handlers.
2567 * @cq_attr: The attributes the CQ should be created upon.
2569 * Users can examine the cq structure to determine the actual CQ size.
2571 struct ib_cq
*ib_create_cq(struct ib_device
*device
,
2572 ib_comp_handler comp_handler
,
2573 void (*event_handler
)(struct ib_event
*, void *),
2575 const struct ib_cq_init_attr
*cq_attr
);
2578 * ib_resize_cq - Modifies the capacity of the CQ.
2579 * @cq: The CQ to resize.
2580 * @cqe: The minimum size of the CQ.
2582 * Users can examine the cq structure to determine the actual CQ size.
2584 int ib_resize_cq(struct ib_cq
*cq
, int cqe
);
2587 * ib_modify_cq - Modifies moderation params of the CQ
2588 * @cq: The CQ to modify.
2589 * @cq_count: number of CQEs that will trigger an event
2590 * @cq_period: max period of time in usec before triggering an event
2593 int ib_modify_cq(struct ib_cq
*cq
, u16 cq_count
, u16 cq_period
);
2596 * ib_destroy_cq - Destroys the specified CQ.
2597 * @cq: The CQ to destroy.
2599 int ib_destroy_cq(struct ib_cq
*cq
);
2602 * ib_poll_cq - poll a CQ for completion(s)
2603 * @cq:the CQ being polled
2604 * @num_entries:maximum number of completions to return
2605 * @wc:array of at least @num_entries &struct ib_wc where completions
2608 * Poll a CQ for (possibly multiple) completions. If the return value
2609 * is < 0, an error occurred. If the return value is >= 0, it is the
2610 * number of completions returned. If the return value is
2611 * non-negative and < num_entries, then the CQ was emptied.
2613 static inline int ib_poll_cq(struct ib_cq
*cq
, int num_entries
,
2616 return cq
->device
->poll_cq(cq
, num_entries
, wc
);
2620 * ib_peek_cq - Returns the number of unreaped completions currently
2621 * on the specified CQ.
2622 * @cq: The CQ to peek.
2623 * @wc_cnt: A minimum number of unreaped completions to check for.
2625 * If the number of unreaped completions is greater than or equal to wc_cnt,
2626 * this function returns wc_cnt, otherwise, it returns the actual number of
2627 * unreaped completions.
2629 int ib_peek_cq(struct ib_cq
*cq
, int wc_cnt
);
2632 * ib_req_notify_cq - Request completion notification on a CQ.
2633 * @cq: The CQ to generate an event for.
2635 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
2636 * to request an event on the next solicited event or next work
2637 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
2638 * may also be |ed in to request a hint about missed events, as
2642 * < 0 means an error occurred while requesting notification
2643 * == 0 means notification was requested successfully, and if
2644 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
2645 * were missed and it is safe to wait for another event. In
2646 * this case is it guaranteed that any work completions added
2647 * to the CQ since the last CQ poll will trigger a completion
2648 * notification event.
2649 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
2650 * in. It means that the consumer must poll the CQ again to
2651 * make sure it is empty to avoid missing an event because of a
2652 * race between requesting notification and an entry being
2653 * added to the CQ. This return value means it is possible
2654 * (but not guaranteed) that a work completion has been added
2655 * to the CQ since the last poll without triggering a
2656 * completion notification event.
2658 static inline int ib_req_notify_cq(struct ib_cq
*cq
,
2659 enum ib_cq_notify_flags flags
)
2661 return cq
->device
->req_notify_cq(cq
, flags
);
2665 * ib_req_ncomp_notif - Request completion notification when there are
2666 * at least the specified number of unreaped completions on the CQ.
2667 * @cq: The CQ to generate an event for.
2668 * @wc_cnt: The number of unreaped completions that should be on the
2669 * CQ before an event is generated.
2671 static inline int ib_req_ncomp_notif(struct ib_cq
*cq
, int wc_cnt
)
2673 return cq
->device
->req_ncomp_notif
?
2674 cq
->device
->req_ncomp_notif(cq
, wc_cnt
) :
2679 * ib_get_dma_mr - Returns a memory region for system memory that is
2681 * @pd: The protection domain associated with the memory region.
2682 * @mr_access_flags: Specifies the memory access rights.
2684 * Note that the ib_dma_*() functions defined below must be used
2685 * to create/destroy addresses used with the Lkey or Rkey returned
2686 * by ib_get_dma_mr().
2688 struct ib_mr
*ib_get_dma_mr(struct ib_pd
*pd
, int mr_access_flags
);
2691 * ib_dma_mapping_error - check a DMA addr for error
2692 * @dev: The device for which the dma_addr was created
2693 * @dma_addr: The DMA address to check
2695 static inline int ib_dma_mapping_error(struct ib_device
*dev
, u64 dma_addr
)
2698 return dev
->dma_ops
->mapping_error(dev
, dma_addr
);
2699 return dma_mapping_error(dev
->dma_device
, dma_addr
);
2703 * ib_dma_map_single - Map a kernel virtual address to DMA address
2704 * @dev: The device for which the dma_addr is to be created
2705 * @cpu_addr: The kernel virtual address
2706 * @size: The size of the region in bytes
2707 * @direction: The direction of the DMA
2709 static inline u64
ib_dma_map_single(struct ib_device
*dev
,
2710 void *cpu_addr
, size_t size
,
2711 enum dma_data_direction direction
)
2714 return dev
->dma_ops
->map_single(dev
, cpu_addr
, size
, direction
);
2715 return dma_map_single(dev
->dma_device
, cpu_addr
, size
, direction
);
2719 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
2720 * @dev: The device for which the DMA address was created
2721 * @addr: The DMA address
2722 * @size: The size of the region in bytes
2723 * @direction: The direction of the DMA
2725 static inline void ib_dma_unmap_single(struct ib_device
*dev
,
2726 u64 addr
, size_t size
,
2727 enum dma_data_direction direction
)
2730 dev
->dma_ops
->unmap_single(dev
, addr
, size
, direction
);
2732 dma_unmap_single(dev
->dma_device
, addr
, size
, direction
);
2735 static inline u64
ib_dma_map_single_attrs(struct ib_device
*dev
,
2736 void *cpu_addr
, size_t size
,
2737 enum dma_data_direction direction
,
2738 struct dma_attrs
*attrs
)
2740 return dma_map_single_attrs(dev
->dma_device
, cpu_addr
, size
,
2744 static inline void ib_dma_unmap_single_attrs(struct ib_device
*dev
,
2745 u64 addr
, size_t size
,
2746 enum dma_data_direction direction
,
2747 struct dma_attrs
*attrs
)
2749 return dma_unmap_single_attrs(dev
->dma_device
, addr
, size
,
2754 * ib_dma_map_page - Map a physical page to DMA address
2755 * @dev: The device for which the dma_addr is to be created
2756 * @page: The page to be mapped
2757 * @offset: The offset within the page
2758 * @size: The size of the region in bytes
2759 * @direction: The direction of the DMA
2761 static inline u64
ib_dma_map_page(struct ib_device
*dev
,
2763 unsigned long offset
,
2765 enum dma_data_direction direction
)
2768 return dev
->dma_ops
->map_page(dev
, page
, offset
, size
, direction
);
2769 return dma_map_page(dev
->dma_device
, page
, offset
, size
, direction
);
2773 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
2774 * @dev: The device for which the DMA address was created
2775 * @addr: The DMA address
2776 * @size: The size of the region in bytes
2777 * @direction: The direction of the DMA
2779 static inline void ib_dma_unmap_page(struct ib_device
*dev
,
2780 u64 addr
, size_t size
,
2781 enum dma_data_direction direction
)
2784 dev
->dma_ops
->unmap_page(dev
, addr
, size
, direction
);
2786 dma_unmap_page(dev
->dma_device
, addr
, size
, direction
);
2790 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
2791 * @dev: The device for which the DMA addresses are to be created
2792 * @sg: The array of scatter/gather entries
2793 * @nents: The number of scatter/gather entries
2794 * @direction: The direction of the DMA
2796 static inline int ib_dma_map_sg(struct ib_device
*dev
,
2797 struct scatterlist
*sg
, int nents
,
2798 enum dma_data_direction direction
)
2801 return dev
->dma_ops
->map_sg(dev
, sg
, nents
, direction
);
2802 return dma_map_sg(dev
->dma_device
, sg
, nents
, direction
);
2806 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
2807 * @dev: The device for which the DMA addresses were created
2808 * @sg: The array of scatter/gather entries
2809 * @nents: The number of scatter/gather entries
2810 * @direction: The direction of the DMA
2812 static inline void ib_dma_unmap_sg(struct ib_device
*dev
,
2813 struct scatterlist
*sg
, int nents
,
2814 enum dma_data_direction direction
)
2817 dev
->dma_ops
->unmap_sg(dev
, sg
, nents
, direction
);
2819 dma_unmap_sg(dev
->dma_device
, sg
, nents
, direction
);
2822 static inline int ib_dma_map_sg_attrs(struct ib_device
*dev
,
2823 struct scatterlist
*sg
, int nents
,
2824 enum dma_data_direction direction
,
2825 struct dma_attrs
*attrs
)
2827 return dma_map_sg_attrs(dev
->dma_device
, sg
, nents
, direction
, attrs
);
2830 static inline void ib_dma_unmap_sg_attrs(struct ib_device
*dev
,
2831 struct scatterlist
*sg
, int nents
,
2832 enum dma_data_direction direction
,
2833 struct dma_attrs
*attrs
)
2835 dma_unmap_sg_attrs(dev
->dma_device
, sg
, nents
, direction
, attrs
);
2838 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
2839 * @dev: The device for which the DMA addresses were created
2840 * @sg: The scatter/gather entry
2842 * Note: this function is obsolete. To do: change all occurrences of
2843 * ib_sg_dma_address() into sg_dma_address().
2845 static inline u64
ib_sg_dma_address(struct ib_device
*dev
,
2846 struct scatterlist
*sg
)
2848 return sg_dma_address(sg
);
2852 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
2853 * @dev: The device for which the DMA addresses were created
2854 * @sg: The scatter/gather entry
2856 * Note: this function is obsolete. To do: change all occurrences of
2857 * ib_sg_dma_len() into sg_dma_len().
2859 static inline unsigned int ib_sg_dma_len(struct ib_device
*dev
,
2860 struct scatterlist
*sg
)
2862 return sg_dma_len(sg
);
2866 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
2867 * @dev: The device for which the DMA address was created
2868 * @addr: The DMA address
2869 * @size: The size of the region in bytes
2870 * @dir: The direction of the DMA
2872 static inline void ib_dma_sync_single_for_cpu(struct ib_device
*dev
,
2875 enum dma_data_direction dir
)
2878 dev
->dma_ops
->sync_single_for_cpu(dev
, addr
, size
, dir
);
2880 dma_sync_single_for_cpu(dev
->dma_device
, addr
, size
, dir
);
2884 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
2885 * @dev: The device for which the DMA address was created
2886 * @addr: The DMA address
2887 * @size: The size of the region in bytes
2888 * @dir: The direction of the DMA
2890 static inline void ib_dma_sync_single_for_device(struct ib_device
*dev
,
2893 enum dma_data_direction dir
)
2896 dev
->dma_ops
->sync_single_for_device(dev
, addr
, size
, dir
);
2898 dma_sync_single_for_device(dev
->dma_device
, addr
, size
, dir
);
2902 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
2903 * @dev: The device for which the DMA address is requested
2904 * @size: The size of the region to allocate in bytes
2905 * @dma_handle: A pointer for returning the DMA address of the region
2906 * @flag: memory allocator flags
2908 static inline void *ib_dma_alloc_coherent(struct ib_device
*dev
,
2914 return dev
->dma_ops
->alloc_coherent(dev
, size
, dma_handle
, flag
);
2919 ret
= dma_alloc_coherent(dev
->dma_device
, size
, &handle
, flag
);
2920 *dma_handle
= handle
;
2926 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
2927 * @dev: The device for which the DMA addresses were allocated
2928 * @size: The size of the region
2929 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
2930 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
2932 static inline void ib_dma_free_coherent(struct ib_device
*dev
,
2933 size_t size
, void *cpu_addr
,
2937 dev
->dma_ops
->free_coherent(dev
, size
, cpu_addr
, dma_handle
);
2939 dma_free_coherent(dev
->dma_device
, size
, cpu_addr
, dma_handle
);
2943 * ib_dereg_mr - Deregisters a memory region and removes it from the
2944 * HCA translation table.
2945 * @mr: The memory region to deregister.
2947 * This function can fail, if the memory region has memory windows bound to it.
2949 int ib_dereg_mr(struct ib_mr
*mr
);
2951 struct ib_mr
*ib_alloc_mr(struct ib_pd
*pd
,
2952 enum ib_mr_type mr_type
,
2956 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
2958 * @mr - struct ib_mr pointer to be updated.
2959 * @newkey - new key to be used.
2961 static inline void ib_update_fast_reg_key(struct ib_mr
*mr
, u8 newkey
)
2963 mr
->lkey
= (mr
->lkey
& 0xffffff00) | newkey
;
2964 mr
->rkey
= (mr
->rkey
& 0xffffff00) | newkey
;
2968 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
2969 * for calculating a new rkey for type 2 memory windows.
2970 * @rkey - the rkey to increment.
2972 static inline u32
ib_inc_rkey(u32 rkey
)
2974 const u32 mask
= 0x000000ff;
2975 return ((rkey
+ 1) & mask
) | (rkey
& ~mask
);
2979 * ib_alloc_fmr - Allocates a unmapped fast memory region.
2980 * @pd: The protection domain associated with the unmapped region.
2981 * @mr_access_flags: Specifies the memory access rights.
2982 * @fmr_attr: Attributes of the unmapped region.
2984 * A fast memory region must be mapped before it can be used as part of
2987 struct ib_fmr
*ib_alloc_fmr(struct ib_pd
*pd
,
2988 int mr_access_flags
,
2989 struct ib_fmr_attr
*fmr_attr
);
2992 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
2993 * @fmr: The fast memory region to associate with the pages.
2994 * @page_list: An array of physical pages to map to the fast memory region.
2995 * @list_len: The number of pages in page_list.
2996 * @iova: The I/O virtual address to use with the mapped region.
2998 static inline int ib_map_phys_fmr(struct ib_fmr
*fmr
,
2999 u64
*page_list
, int list_len
,
3002 return fmr
->device
->map_phys_fmr(fmr
, page_list
, list_len
, iova
);
3006 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
3007 * @fmr_list: A linked list of fast memory regions to unmap.
3009 int ib_unmap_fmr(struct list_head
*fmr_list
);
3012 * ib_dealloc_fmr - Deallocates a fast memory region.
3013 * @fmr: The fast memory region to deallocate.
3015 int ib_dealloc_fmr(struct ib_fmr
*fmr
);
3018 * ib_attach_mcast - Attaches the specified QP to a multicast group.
3019 * @qp: QP to attach to the multicast group. The QP must be type
3021 * @gid: Multicast group GID.
3022 * @lid: Multicast group LID in host byte order.
3024 * In order to send and receive multicast packets, subnet
3025 * administration must have created the multicast group and configured
3026 * the fabric appropriately. The port associated with the specified
3027 * QP must also be a member of the multicast group.
3029 int ib_attach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
);
3032 * ib_detach_mcast - Detaches the specified QP from a multicast group.
3033 * @qp: QP to detach from the multicast group.
3034 * @gid: Multicast group GID.
3035 * @lid: Multicast group LID in host byte order.
3037 int ib_detach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
);
3040 * ib_alloc_xrcd - Allocates an XRC domain.
3041 * @device: The device on which to allocate the XRC domain.
3043 struct ib_xrcd
*ib_alloc_xrcd(struct ib_device
*device
);
3046 * ib_dealloc_xrcd - Deallocates an XRC domain.
3047 * @xrcd: The XRC domain to deallocate.
3049 int ib_dealloc_xrcd(struct ib_xrcd
*xrcd
);
3051 struct ib_flow
*ib_create_flow(struct ib_qp
*qp
,
3052 struct ib_flow_attr
*flow_attr
, int domain
);
3053 int ib_destroy_flow(struct ib_flow
*flow_id
);
3055 static inline int ib_check_mr_access(int flags
)
3058 * Local write permission is required if remote write or
3059 * remote atomic permission is also requested.
3061 if (flags
& (IB_ACCESS_REMOTE_ATOMIC
| IB_ACCESS_REMOTE_WRITE
) &&
3062 !(flags
& IB_ACCESS_LOCAL_WRITE
))
3069 * ib_check_mr_status: lightweight check of MR status.
3070 * This routine may provide status checks on a selected
3071 * ib_mr. first use is for signature status check.
3073 * @mr: A memory region.
3074 * @check_mask: Bitmask of which checks to perform from
3075 * ib_mr_status_check enumeration.
3076 * @mr_status: The container of relevant status checks.
3077 * failed checks will be indicated in the status bitmask
3078 * and the relevant info shall be in the error item.
3080 int ib_check_mr_status(struct ib_mr
*mr
, u32 check_mask
,
3081 struct ib_mr_status
*mr_status
);
3083 struct net_device
*ib_get_net_dev_by_params(struct ib_device
*dev
, u8 port
,
3084 u16 pkey
, const union ib_gid
*gid
,
3085 const struct sockaddr
*addr
);
3087 int ib_map_mr_sg(struct ib_mr
*mr
,
3088 struct scatterlist
*sg
,
3090 unsigned int page_size
);
3093 ib_map_mr_sg_zbva(struct ib_mr
*mr
,
3094 struct scatterlist
*sg
,
3096 unsigned int page_size
)
3100 n
= ib_map_mr_sg(mr
, sg
, sg_nents
, page_size
);
3106 int ib_sg_to_pages(struct ib_mr
*mr
,
3107 struct scatterlist
*sgl
,
3109 int (*set_page
)(struct ib_mr
*, u64
));
3111 void ib_drain_rq(struct ib_qp
*qp
);
3112 void ib_drain_sq(struct ib_qp
*qp
);
3113 void ib_drain_qp(struct ib_qp
*qp
);
3114 #endif /* IB_VERBS_H */