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 <uapi/linux/if_ether.h>
53 #include <linux/atomic.h>
54 #include <asm/uaccess.h>
56 extern struct workqueue_struct
*ib_wq
;
67 /* IB values map to NodeInfo:NodeType. */
76 enum rdma_transport_type
{
80 RDMA_TRANSPORT_USNIC_UDP
83 enum rdma_transport_type
84 rdma_node_get_transport(enum rdma_node_type node_type
) __attribute_const__
;
86 enum rdma_link_layer
{
87 IB_LINK_LAYER_UNSPECIFIED
,
88 IB_LINK_LAYER_INFINIBAND
,
89 IB_LINK_LAYER_ETHERNET
,
92 enum ib_device_cap_flags
{
93 IB_DEVICE_RESIZE_MAX_WR
= 1,
94 IB_DEVICE_BAD_PKEY_CNTR
= (1<<1),
95 IB_DEVICE_BAD_QKEY_CNTR
= (1<<2),
96 IB_DEVICE_RAW_MULTI
= (1<<3),
97 IB_DEVICE_AUTO_PATH_MIG
= (1<<4),
98 IB_DEVICE_CHANGE_PHY_PORT
= (1<<5),
99 IB_DEVICE_UD_AV_PORT_ENFORCE
= (1<<6),
100 IB_DEVICE_CURR_QP_STATE_MOD
= (1<<7),
101 IB_DEVICE_SHUTDOWN_PORT
= (1<<8),
102 IB_DEVICE_INIT_TYPE
= (1<<9),
103 IB_DEVICE_PORT_ACTIVE_EVENT
= (1<<10),
104 IB_DEVICE_SYS_IMAGE_GUID
= (1<<11),
105 IB_DEVICE_RC_RNR_NAK_GEN
= (1<<12),
106 IB_DEVICE_SRQ_RESIZE
= (1<<13),
107 IB_DEVICE_N_NOTIFY_CQ
= (1<<14),
108 IB_DEVICE_LOCAL_DMA_LKEY
= (1<<15),
109 IB_DEVICE_RESERVED
= (1<<16), /* old SEND_W_INV */
110 IB_DEVICE_MEM_WINDOW
= (1<<17),
112 * Devices should set IB_DEVICE_UD_IP_SUM if they support
113 * insertion of UDP and TCP checksum on outgoing UD IPoIB
114 * messages and can verify the validity of checksum for
115 * incoming messages. Setting this flag implies that the
116 * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
118 IB_DEVICE_UD_IP_CSUM
= (1<<18),
119 IB_DEVICE_UD_TSO
= (1<<19),
120 IB_DEVICE_XRC
= (1<<20),
121 IB_DEVICE_MEM_MGT_EXTENSIONS
= (1<<21),
122 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK
= (1<<22),
123 IB_DEVICE_MEM_WINDOW_TYPE_2A
= (1<<23),
124 IB_DEVICE_MEM_WINDOW_TYPE_2B
= (1<<24),
125 IB_DEVICE_MANAGED_FLOW_STEERING
= (1<<29)
134 struct ib_device_attr
{
136 __be64 sys_image_guid
;
144 int device_cap_flags
;
154 int max_qp_init_rd_atom
;
155 int max_ee_init_rd_atom
;
156 enum ib_atomic_cap atomic_cap
;
157 enum ib_atomic_cap masked_atomic_cap
;
164 int max_mcast_qp_attach
;
165 int max_total_mcast_qp_attach
;
172 unsigned int max_fast_reg_page_list_len
;
174 u8 local_ca_ack_delay
;
185 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu
)
188 case IB_MTU_256
: return 256;
189 case IB_MTU_512
: return 512;
190 case IB_MTU_1024
: return 1024;
191 case IB_MTU_2048
: return 2048;
192 case IB_MTU_4096
: return 4096;
203 IB_PORT_ACTIVE_DEFER
= 5
206 enum ib_port_cap_flags
{
208 IB_PORT_NOTICE_SUP
= 1 << 2,
209 IB_PORT_TRAP_SUP
= 1 << 3,
210 IB_PORT_OPT_IPD_SUP
= 1 << 4,
211 IB_PORT_AUTO_MIGR_SUP
= 1 << 5,
212 IB_PORT_SL_MAP_SUP
= 1 << 6,
213 IB_PORT_MKEY_NVRAM
= 1 << 7,
214 IB_PORT_PKEY_NVRAM
= 1 << 8,
215 IB_PORT_LED_INFO_SUP
= 1 << 9,
216 IB_PORT_SM_DISABLED
= 1 << 10,
217 IB_PORT_SYS_IMAGE_GUID_SUP
= 1 << 11,
218 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP
= 1 << 12,
219 IB_PORT_EXTENDED_SPEEDS_SUP
= 1 << 14,
220 IB_PORT_CM_SUP
= 1 << 16,
221 IB_PORT_SNMP_TUNNEL_SUP
= 1 << 17,
222 IB_PORT_REINIT_SUP
= 1 << 18,
223 IB_PORT_DEVICE_MGMT_SUP
= 1 << 19,
224 IB_PORT_VENDOR_CLASS_SUP
= 1 << 20,
225 IB_PORT_DR_NOTICE_SUP
= 1 << 21,
226 IB_PORT_CAP_MASK_NOTICE_SUP
= 1 << 22,
227 IB_PORT_BOOT_MGMT_SUP
= 1 << 23,
228 IB_PORT_LINK_LATENCY_SUP
= 1 << 24,
229 IB_PORT_CLIENT_REG_SUP
= 1 << 25
239 static inline int ib_width_enum_to_int(enum ib_port_width width
)
242 case IB_WIDTH_1X
: return 1;
243 case IB_WIDTH_4X
: return 4;
244 case IB_WIDTH_8X
: return 8;
245 case IB_WIDTH_12X
: return 12;
259 struct ib_protocol_stats
{
263 struct iw_protocol_stats
{
266 u64 ipInTooBigErrors
;
269 u64 ipInUnknownProtos
;
270 u64 ipInTruncatedPkts
;
273 u64 ipOutForwDatagrams
;
305 union rdma_protocol_stats
{
306 struct ib_protocol_stats ib
;
307 struct iw_protocol_stats iw
;
310 struct ib_port_attr
{
311 enum ib_port_state state
;
313 enum ib_mtu active_mtu
;
332 enum ib_device_modify_flags
{
333 IB_DEVICE_MODIFY_SYS_IMAGE_GUID
= 1 << 0,
334 IB_DEVICE_MODIFY_NODE_DESC
= 1 << 1
337 struct ib_device_modify
{
342 enum ib_port_modify_flags
{
343 IB_PORT_SHUTDOWN
= 1,
344 IB_PORT_INIT_TYPE
= (1<<2),
345 IB_PORT_RESET_QKEY_CNTR
= (1<<3)
348 struct ib_port_modify
{
349 u32 set_port_cap_mask
;
350 u32 clr_port_cap_mask
;
358 IB_EVENT_QP_ACCESS_ERR
,
362 IB_EVENT_PATH_MIG_ERR
,
363 IB_EVENT_DEVICE_FATAL
,
364 IB_EVENT_PORT_ACTIVE
,
367 IB_EVENT_PKEY_CHANGE
,
370 IB_EVENT_SRQ_LIMIT_REACHED
,
371 IB_EVENT_QP_LAST_WQE_REACHED
,
372 IB_EVENT_CLIENT_REREGISTER
,
377 struct ib_device
*device
;
384 enum ib_event_type event
;
387 struct ib_event_handler
{
388 struct ib_device
*device
;
389 void (*handler
)(struct ib_event_handler
*, struct ib_event
*);
390 struct list_head list
;
393 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
395 (_ptr)->device = _device; \
396 (_ptr)->handler = _handler; \
397 INIT_LIST_HEAD(&(_ptr)->list); \
400 struct ib_global_route
{
409 __be32 version_tclass_flow
;
418 IB_MULTICAST_QPN
= 0xffffff
421 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
428 IB_RATE_PORT_CURRENT
= 0,
429 IB_RATE_2_5_GBPS
= 2,
437 IB_RATE_120_GBPS
= 10,
438 IB_RATE_14_GBPS
= 11,
439 IB_RATE_56_GBPS
= 12,
440 IB_RATE_112_GBPS
= 13,
441 IB_RATE_168_GBPS
= 14,
442 IB_RATE_25_GBPS
= 15,
443 IB_RATE_100_GBPS
= 16,
444 IB_RATE_200_GBPS
= 17,
445 IB_RATE_300_GBPS
= 18
449 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
450 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
451 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
452 * @rate: rate to convert.
454 int ib_rate_to_mult(enum ib_rate rate
) __attribute_const__
;
457 * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
458 * For example, IB_RATE_2_5_GBPS will be converted to 2500.
459 * @rate: rate to convert.
461 int ib_rate_to_mbps(enum ib_rate rate
) __attribute_const__
;
464 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
466 * @mult: multiple to convert.
468 enum ib_rate
mult_to_ib_rate(int mult
) __attribute_const__
;
471 struct ib_global_route grh
;
486 IB_WC_LOC_EEC_OP_ERR
,
491 IB_WC_LOC_ACCESS_ERR
,
492 IB_WC_REM_INV_REQ_ERR
,
493 IB_WC_REM_ACCESS_ERR
,
496 IB_WC_RNR_RETRY_EXC_ERR
,
497 IB_WC_LOC_RDD_VIOL_ERR
,
498 IB_WC_REM_INV_RD_REQ_ERR
,
501 IB_WC_INV_EEC_STATE_ERR
,
503 IB_WC_RESP_TIMEOUT_ERR
,
517 IB_WC_MASKED_COMP_SWAP
,
518 IB_WC_MASKED_FETCH_ADD
,
520 * Set value of IB_WC_RECV so consumers can test if a completion is a
521 * receive by testing (opcode & IB_WC_RECV).
524 IB_WC_RECV_RDMA_WITH_IMM
529 IB_WC_WITH_IMM
= (1<<1),
530 IB_WC_WITH_INVALIDATE
= (1<<2),
531 IB_WC_IP_CSUM_OK
= (1<<3),
532 IB_WC_WITH_SMAC
= (1<<4),
533 IB_WC_WITH_VLAN
= (1<<5),
538 enum ib_wc_status status
;
539 enum ib_wc_opcode opcode
;
553 u8 port_num
; /* valid only for DR SMPs on switches */
558 enum ib_cq_notify_flags
{
559 IB_CQ_SOLICITED
= 1 << 0,
560 IB_CQ_NEXT_COMP
= 1 << 1,
561 IB_CQ_SOLICITED_MASK
= IB_CQ_SOLICITED
| IB_CQ_NEXT_COMP
,
562 IB_CQ_REPORT_MISSED_EVENTS
= 1 << 2,
570 enum ib_srq_attr_mask
{
571 IB_SRQ_MAX_WR
= 1 << 0,
572 IB_SRQ_LIMIT
= 1 << 1,
581 struct ib_srq_init_attr
{
582 void (*event_handler
)(struct ib_event
*, void *);
584 struct ib_srq_attr attr
;
585 enum ib_srq_type srq_type
;
589 struct ib_xrcd
*xrcd
;
610 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
611 * here (and in that order) since the MAD layer uses them as
612 * indices into a 2-entry table.
621 IB_QPT_RAW_ETHERTYPE
,
622 IB_QPT_RAW_PACKET
= 8,
626 /* Reserve a range for qp types internal to the low level driver.
627 * These qp types will not be visible at the IB core layer, so the
628 * IB_QPT_MAX usages should not be affected in the core layer
630 IB_QPT_RESERVED1
= 0x1000,
642 enum ib_qp_create_flags
{
643 IB_QP_CREATE_IPOIB_UD_LSO
= 1 << 0,
644 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK
= 1 << 1,
645 IB_QP_CREATE_NETIF_QP
= 1 << 5,
646 /* reserve bits 26-31 for low level drivers' internal use */
647 IB_QP_CREATE_RESERVED_START
= 1 << 26,
648 IB_QP_CREATE_RESERVED_END
= 1 << 31,
653 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
654 * callback to destroy the passed in QP.
657 struct ib_qp_init_attr
{
658 void (*event_handler
)(struct ib_event
*, void *);
660 struct ib_cq
*send_cq
;
661 struct ib_cq
*recv_cq
;
663 struct ib_xrcd
*xrcd
; /* XRC TGT QPs only */
664 struct ib_qp_cap cap
;
665 enum ib_sig_type sq_sig_type
;
666 enum ib_qp_type qp_type
;
667 enum ib_qp_create_flags create_flags
;
668 u8 port_num
; /* special QP types only */
671 struct ib_qp_open_attr
{
672 void (*event_handler
)(struct ib_event
*, void *);
675 enum ib_qp_type qp_type
;
678 enum ib_rnr_timeout
{
679 IB_RNR_TIMER_655_36
= 0,
680 IB_RNR_TIMER_000_01
= 1,
681 IB_RNR_TIMER_000_02
= 2,
682 IB_RNR_TIMER_000_03
= 3,
683 IB_RNR_TIMER_000_04
= 4,
684 IB_RNR_TIMER_000_06
= 5,
685 IB_RNR_TIMER_000_08
= 6,
686 IB_RNR_TIMER_000_12
= 7,
687 IB_RNR_TIMER_000_16
= 8,
688 IB_RNR_TIMER_000_24
= 9,
689 IB_RNR_TIMER_000_32
= 10,
690 IB_RNR_TIMER_000_48
= 11,
691 IB_RNR_TIMER_000_64
= 12,
692 IB_RNR_TIMER_000_96
= 13,
693 IB_RNR_TIMER_001_28
= 14,
694 IB_RNR_TIMER_001_92
= 15,
695 IB_RNR_TIMER_002_56
= 16,
696 IB_RNR_TIMER_003_84
= 17,
697 IB_RNR_TIMER_005_12
= 18,
698 IB_RNR_TIMER_007_68
= 19,
699 IB_RNR_TIMER_010_24
= 20,
700 IB_RNR_TIMER_015_36
= 21,
701 IB_RNR_TIMER_020_48
= 22,
702 IB_RNR_TIMER_030_72
= 23,
703 IB_RNR_TIMER_040_96
= 24,
704 IB_RNR_TIMER_061_44
= 25,
705 IB_RNR_TIMER_081_92
= 26,
706 IB_RNR_TIMER_122_88
= 27,
707 IB_RNR_TIMER_163_84
= 28,
708 IB_RNR_TIMER_245_76
= 29,
709 IB_RNR_TIMER_327_68
= 30,
710 IB_RNR_TIMER_491_52
= 31
713 enum ib_qp_attr_mask
{
715 IB_QP_CUR_STATE
= (1<<1),
716 IB_QP_EN_SQD_ASYNC_NOTIFY
= (1<<2),
717 IB_QP_ACCESS_FLAGS
= (1<<3),
718 IB_QP_PKEY_INDEX
= (1<<4),
722 IB_QP_PATH_MTU
= (1<<8),
723 IB_QP_TIMEOUT
= (1<<9),
724 IB_QP_RETRY_CNT
= (1<<10),
725 IB_QP_RNR_RETRY
= (1<<11),
726 IB_QP_RQ_PSN
= (1<<12),
727 IB_QP_MAX_QP_RD_ATOMIC
= (1<<13),
728 IB_QP_ALT_PATH
= (1<<14),
729 IB_QP_MIN_RNR_TIMER
= (1<<15),
730 IB_QP_SQ_PSN
= (1<<16),
731 IB_QP_MAX_DEST_RD_ATOMIC
= (1<<17),
732 IB_QP_PATH_MIG_STATE
= (1<<18),
734 IB_QP_DEST_QPN
= (1<<20),
735 IB_QP_SMAC
= (1<<21),
736 IB_QP_ALT_SMAC
= (1<<22),
738 IB_QP_ALT_VID
= (1<<24),
763 enum ib_qp_state qp_state
;
764 enum ib_qp_state cur_qp_state
;
765 enum ib_mtu path_mtu
;
766 enum ib_mig_state path_mig_state
;
772 struct ib_qp_cap cap
;
773 struct ib_ah_attr ah_attr
;
774 struct ib_ah_attr alt_ah_attr
;
777 u8 en_sqd_async_notify
;
780 u8 max_dest_rd_atomic
;
789 u8 alt_smac
[ETH_ALEN
];
796 IB_WR_RDMA_WRITE_WITH_IMM
,
800 IB_WR_ATOMIC_CMP_AND_SWP
,
801 IB_WR_ATOMIC_FETCH_AND_ADD
,
804 IB_WR_RDMA_READ_WITH_INV
,
807 IB_WR_MASKED_ATOMIC_CMP_AND_SWP
,
808 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD
,
810 /* reserve values for low level drivers' internal use.
811 * These values will not be used at all in the ib core layer.
813 IB_WR_RESERVED1
= 0xf0,
827 IB_SEND_SIGNALED
= (1<<1),
828 IB_SEND_SOLICITED
= (1<<2),
829 IB_SEND_INLINE
= (1<<3),
830 IB_SEND_IP_CSUM
= (1<<4),
832 /* reserve bits 26-31 for low level drivers' internal use */
833 IB_SEND_RESERVED_START
= (1 << 26),
834 IB_SEND_RESERVED_END
= (1 << 31),
843 struct ib_fast_reg_page_list
{
844 struct ib_device
*device
;
846 unsigned int max_page_list_len
;
850 * struct ib_mw_bind_info - Parameters for a memory window bind operation.
851 * @mr: A memory region to bind the memory window to.
852 * @addr: The address where the memory window should begin.
853 * @length: The length of the memory window, in bytes.
854 * @mw_access_flags: Access flags from enum ib_access_flags for the window.
856 * This struct contains the shared parameters for type 1 and type 2
857 * memory window bind operations.
859 struct ib_mw_bind_info
{
867 struct ib_send_wr
*next
;
869 struct ib_sge
*sg_list
;
871 enum ib_wr_opcode opcode
;
886 u64 compare_add_mask
;
897 u16 pkey_index
; /* valid for GSI only */
898 u8 port_num
; /* valid for DR SMPs on switch only */
902 struct ib_fast_reg_page_list
*page_list
;
903 unsigned int page_shift
;
904 unsigned int page_list_len
;
911 /* The new rkey for the memory window. */
913 struct ib_mw_bind_info bind_info
;
916 u32 xrc_remote_srq_num
; /* XRC TGT QPs only */
920 struct ib_recv_wr
*next
;
922 struct ib_sge
*sg_list
;
926 enum ib_access_flags
{
927 IB_ACCESS_LOCAL_WRITE
= 1,
928 IB_ACCESS_REMOTE_WRITE
= (1<<1),
929 IB_ACCESS_REMOTE_READ
= (1<<2),
930 IB_ACCESS_REMOTE_ATOMIC
= (1<<3),
931 IB_ACCESS_MW_BIND
= (1<<4),
932 IB_ZERO_BASED
= (1<<5)
942 u64 device_virt_addr
;
949 enum ib_mr_rereg_flags
{
950 IB_MR_REREG_TRANS
= 1,
951 IB_MR_REREG_PD
= (1<<1),
952 IB_MR_REREG_ACCESS
= (1<<2)
956 * struct ib_mw_bind - Parameters for a type 1 memory window bind operation.
957 * @wr_id: Work request id.
958 * @send_flags: Flags from ib_send_flags enum.
959 * @bind_info: More parameters of the bind operation.
964 struct ib_mw_bind_info bind_info
;
974 struct ib_device
*device
;
975 struct list_head pd_list
;
976 struct list_head mr_list
;
977 struct list_head mw_list
;
978 struct list_head cq_list
;
979 struct list_head qp_list
;
980 struct list_head srq_list
;
981 struct list_head ah_list
;
982 struct list_head xrcd_list
;
983 struct list_head rule_list
;
988 u64 user_handle
; /* handle given to us by userspace */
989 struct ib_ucontext
*context
; /* associated user context */
990 void *object
; /* containing object */
991 struct list_head list
; /* link to context's list */
992 int id
; /* index into kernel idr */
994 struct rw_semaphore mutex
; /* protects .live */
999 const void __user
*inbuf
;
1000 void __user
*outbuf
;
1006 struct ib_device
*device
;
1007 struct ib_uobject
*uobject
;
1008 atomic_t usecnt
; /* count all resources */
1012 struct ib_device
*device
;
1013 atomic_t usecnt
; /* count all exposed resources */
1014 struct inode
*inode
;
1016 struct mutex tgt_qp_mutex
;
1017 struct list_head tgt_qp_list
;
1021 struct ib_device
*device
;
1023 struct ib_uobject
*uobject
;
1026 typedef void (*ib_comp_handler
)(struct ib_cq
*cq
, void *cq_context
);
1029 struct ib_device
*device
;
1030 struct ib_uobject
*uobject
;
1031 ib_comp_handler comp_handler
;
1032 void (*event_handler
)(struct ib_event
*, void *);
1035 atomic_t usecnt
; /* count number of work queues */
1039 struct ib_device
*device
;
1041 struct ib_uobject
*uobject
;
1042 void (*event_handler
)(struct ib_event
*, void *);
1044 enum ib_srq_type srq_type
;
1049 struct ib_xrcd
*xrcd
;
1057 struct ib_device
*device
;
1059 struct ib_cq
*send_cq
;
1060 struct ib_cq
*recv_cq
;
1062 struct ib_xrcd
*xrcd
; /* XRC TGT QPs only */
1063 struct list_head xrcd_list
;
1064 /* count times opened, mcast attaches, flow attaches */
1066 struct list_head open_list
;
1067 struct ib_qp
*real_qp
;
1068 struct ib_uobject
*uobject
;
1069 void (*event_handler
)(struct ib_event
*, void *);
1072 enum ib_qp_type qp_type
;
1076 struct ib_device
*device
;
1078 struct ib_uobject
*uobject
;
1081 atomic_t usecnt
; /* count number of MWs */
1085 struct ib_device
*device
;
1087 struct ib_uobject
*uobject
;
1089 enum ib_mw_type type
;
1093 struct ib_device
*device
;
1095 struct list_head list
;
1100 /* Supported steering options */
1101 enum ib_flow_attr_type
{
1102 /* steering according to rule specifications */
1103 IB_FLOW_ATTR_NORMAL
= 0x0,
1104 /* default unicast and multicast rule -
1105 * receive all Eth traffic which isn't steered to any QP
1107 IB_FLOW_ATTR_ALL_DEFAULT
= 0x1,
1108 /* default multicast rule -
1109 * receive all Eth multicast traffic which isn't steered to any QP
1111 IB_FLOW_ATTR_MC_DEFAULT
= 0x2,
1112 /* sniffer rule - receive all port traffic */
1113 IB_FLOW_ATTR_SNIFFER
= 0x3
1116 /* Supported steering header types */
1117 enum ib_flow_spec_type
{
1119 IB_FLOW_SPEC_ETH
= 0x20,
1120 IB_FLOW_SPEC_IB
= 0x22,
1122 IB_FLOW_SPEC_IPV4
= 0x30,
1124 IB_FLOW_SPEC_TCP
= 0x40,
1125 IB_FLOW_SPEC_UDP
= 0x41
1127 #define IB_FLOW_SPEC_LAYER_MASK 0xF0
1128 #define IB_FLOW_SPEC_SUPPORT_LAYERS 4
1130 /* Flow steering rule priority is set according to it's domain.
1131 * Lower domain value means higher priority.
1133 enum ib_flow_domain
{
1134 IB_FLOW_DOMAIN_USER
,
1135 IB_FLOW_DOMAIN_ETHTOOL
,
1138 IB_FLOW_DOMAIN_NUM
/* Must be last */
1141 struct ib_flow_eth_filter
{
1148 struct ib_flow_spec_eth
{
1149 enum ib_flow_spec_type type
;
1151 struct ib_flow_eth_filter val
;
1152 struct ib_flow_eth_filter mask
;
1155 struct ib_flow_ib_filter
{
1160 struct ib_flow_spec_ib
{
1161 enum ib_flow_spec_type type
;
1163 struct ib_flow_ib_filter val
;
1164 struct ib_flow_ib_filter mask
;
1167 struct ib_flow_ipv4_filter
{
1172 struct ib_flow_spec_ipv4
{
1173 enum ib_flow_spec_type type
;
1175 struct ib_flow_ipv4_filter val
;
1176 struct ib_flow_ipv4_filter mask
;
1179 struct ib_flow_tcp_udp_filter
{
1184 struct ib_flow_spec_tcp_udp
{
1185 enum ib_flow_spec_type type
;
1187 struct ib_flow_tcp_udp_filter val
;
1188 struct ib_flow_tcp_udp_filter mask
;
1191 union ib_flow_spec
{
1193 enum ib_flow_spec_type type
;
1196 struct ib_flow_spec_eth eth
;
1197 struct ib_flow_spec_ib ib
;
1198 struct ib_flow_spec_ipv4 ipv4
;
1199 struct ib_flow_spec_tcp_udp tcp_udp
;
1202 struct ib_flow_attr
{
1203 enum ib_flow_attr_type type
;
1209 /* Following are the optional layers according to user request
1210 * struct ib_flow_spec_xxx
1211 * struct ib_flow_spec_yyy
1217 struct ib_uobject
*uobject
;
1223 enum ib_process_mad_flags
{
1224 IB_MAD_IGNORE_MKEY
= 1,
1225 IB_MAD_IGNORE_BKEY
= 2,
1226 IB_MAD_IGNORE_ALL
= IB_MAD_IGNORE_MKEY
| IB_MAD_IGNORE_BKEY
1229 enum ib_mad_result
{
1230 IB_MAD_RESULT_FAILURE
= 0, /* (!SUCCESS is the important flag) */
1231 IB_MAD_RESULT_SUCCESS
= 1 << 0, /* MAD was successfully processed */
1232 IB_MAD_RESULT_REPLY
= 1 << 1, /* Reply packet needs to be sent */
1233 IB_MAD_RESULT_CONSUMED
= 1 << 2 /* Packet consumed: stop processing */
1236 #define IB_DEVICE_NAME_MAX 64
1240 struct ib_event_handler event_handler
;
1241 struct ib_pkey_cache
**pkey_cache
;
1242 struct ib_gid_cache
**gid_cache
;
1246 struct ib_dma_mapping_ops
{
1247 int (*mapping_error
)(struct ib_device
*dev
,
1249 u64 (*map_single
)(struct ib_device
*dev
,
1250 void *ptr
, size_t size
,
1251 enum dma_data_direction direction
);
1252 void (*unmap_single
)(struct ib_device
*dev
,
1253 u64 addr
, size_t size
,
1254 enum dma_data_direction direction
);
1255 u64 (*map_page
)(struct ib_device
*dev
,
1256 struct page
*page
, unsigned long offset
,
1258 enum dma_data_direction direction
);
1259 void (*unmap_page
)(struct ib_device
*dev
,
1260 u64 addr
, size_t size
,
1261 enum dma_data_direction direction
);
1262 int (*map_sg
)(struct ib_device
*dev
,
1263 struct scatterlist
*sg
, int nents
,
1264 enum dma_data_direction direction
);
1265 void (*unmap_sg
)(struct ib_device
*dev
,
1266 struct scatterlist
*sg
, int nents
,
1267 enum dma_data_direction direction
);
1268 u64 (*dma_address
)(struct ib_device
*dev
,
1269 struct scatterlist
*sg
);
1270 unsigned int (*dma_len
)(struct ib_device
*dev
,
1271 struct scatterlist
*sg
);
1272 void (*sync_single_for_cpu
)(struct ib_device
*dev
,
1275 enum dma_data_direction dir
);
1276 void (*sync_single_for_device
)(struct ib_device
*dev
,
1279 enum dma_data_direction dir
);
1280 void *(*alloc_coherent
)(struct ib_device
*dev
,
1284 void (*free_coherent
)(struct ib_device
*dev
,
1285 size_t size
, void *cpu_addr
,
1292 struct device
*dma_device
;
1294 char name
[IB_DEVICE_NAME_MAX
];
1296 struct list_head event_handler_list
;
1297 spinlock_t event_handler_lock
;
1299 spinlock_t client_data_lock
;
1300 struct list_head core_list
;
1301 struct list_head client_data_list
;
1303 struct ib_cache cache
;
1307 int num_comp_vectors
;
1309 struct iw_cm_verbs
*iwcm
;
1311 int (*get_protocol_stats
)(struct ib_device
*device
,
1312 union rdma_protocol_stats
*stats
);
1313 int (*query_device
)(struct ib_device
*device
,
1314 struct ib_device_attr
*device_attr
);
1315 int (*query_port
)(struct ib_device
*device
,
1317 struct ib_port_attr
*port_attr
);
1318 enum rdma_link_layer (*get_link_layer
)(struct ib_device
*device
,
1320 int (*query_gid
)(struct ib_device
*device
,
1321 u8 port_num
, int index
,
1323 int (*query_pkey
)(struct ib_device
*device
,
1324 u8 port_num
, u16 index
, u16
*pkey
);
1325 int (*modify_device
)(struct ib_device
*device
,
1326 int device_modify_mask
,
1327 struct ib_device_modify
*device_modify
);
1328 int (*modify_port
)(struct ib_device
*device
,
1329 u8 port_num
, int port_modify_mask
,
1330 struct ib_port_modify
*port_modify
);
1331 struct ib_ucontext
* (*alloc_ucontext
)(struct ib_device
*device
,
1332 struct ib_udata
*udata
);
1333 int (*dealloc_ucontext
)(struct ib_ucontext
*context
);
1334 int (*mmap
)(struct ib_ucontext
*context
,
1335 struct vm_area_struct
*vma
);
1336 struct ib_pd
* (*alloc_pd
)(struct ib_device
*device
,
1337 struct ib_ucontext
*context
,
1338 struct ib_udata
*udata
);
1339 int (*dealloc_pd
)(struct ib_pd
*pd
);
1340 struct ib_ah
* (*create_ah
)(struct ib_pd
*pd
,
1341 struct ib_ah_attr
*ah_attr
);
1342 int (*modify_ah
)(struct ib_ah
*ah
,
1343 struct ib_ah_attr
*ah_attr
);
1344 int (*query_ah
)(struct ib_ah
*ah
,
1345 struct ib_ah_attr
*ah_attr
);
1346 int (*destroy_ah
)(struct ib_ah
*ah
);
1347 struct ib_srq
* (*create_srq
)(struct ib_pd
*pd
,
1348 struct ib_srq_init_attr
*srq_init_attr
,
1349 struct ib_udata
*udata
);
1350 int (*modify_srq
)(struct ib_srq
*srq
,
1351 struct ib_srq_attr
*srq_attr
,
1352 enum ib_srq_attr_mask srq_attr_mask
,
1353 struct ib_udata
*udata
);
1354 int (*query_srq
)(struct ib_srq
*srq
,
1355 struct ib_srq_attr
*srq_attr
);
1356 int (*destroy_srq
)(struct ib_srq
*srq
);
1357 int (*post_srq_recv
)(struct ib_srq
*srq
,
1358 struct ib_recv_wr
*recv_wr
,
1359 struct ib_recv_wr
**bad_recv_wr
);
1360 struct ib_qp
* (*create_qp
)(struct ib_pd
*pd
,
1361 struct ib_qp_init_attr
*qp_init_attr
,
1362 struct ib_udata
*udata
);
1363 int (*modify_qp
)(struct ib_qp
*qp
,
1364 struct ib_qp_attr
*qp_attr
,
1366 struct ib_udata
*udata
);
1367 int (*query_qp
)(struct ib_qp
*qp
,
1368 struct ib_qp_attr
*qp_attr
,
1370 struct ib_qp_init_attr
*qp_init_attr
);
1371 int (*destroy_qp
)(struct ib_qp
*qp
);
1372 int (*post_send
)(struct ib_qp
*qp
,
1373 struct ib_send_wr
*send_wr
,
1374 struct ib_send_wr
**bad_send_wr
);
1375 int (*post_recv
)(struct ib_qp
*qp
,
1376 struct ib_recv_wr
*recv_wr
,
1377 struct ib_recv_wr
**bad_recv_wr
);
1378 struct ib_cq
* (*create_cq
)(struct ib_device
*device
, int cqe
,
1380 struct ib_ucontext
*context
,
1381 struct ib_udata
*udata
);
1382 int (*modify_cq
)(struct ib_cq
*cq
, u16 cq_count
,
1384 int (*destroy_cq
)(struct ib_cq
*cq
);
1385 int (*resize_cq
)(struct ib_cq
*cq
, int cqe
,
1386 struct ib_udata
*udata
);
1387 int (*poll_cq
)(struct ib_cq
*cq
, int num_entries
,
1389 int (*peek_cq
)(struct ib_cq
*cq
, int wc_cnt
);
1390 int (*req_notify_cq
)(struct ib_cq
*cq
,
1391 enum ib_cq_notify_flags flags
);
1392 int (*req_ncomp_notif
)(struct ib_cq
*cq
,
1394 struct ib_mr
* (*get_dma_mr
)(struct ib_pd
*pd
,
1395 int mr_access_flags
);
1396 struct ib_mr
* (*reg_phys_mr
)(struct ib_pd
*pd
,
1397 struct ib_phys_buf
*phys_buf_array
,
1399 int mr_access_flags
,
1401 struct ib_mr
* (*reg_user_mr
)(struct ib_pd
*pd
,
1402 u64 start
, u64 length
,
1404 int mr_access_flags
,
1405 struct ib_udata
*udata
);
1406 int (*query_mr
)(struct ib_mr
*mr
,
1407 struct ib_mr_attr
*mr_attr
);
1408 int (*dereg_mr
)(struct ib_mr
*mr
);
1409 struct ib_mr
* (*alloc_fast_reg_mr
)(struct ib_pd
*pd
,
1410 int max_page_list_len
);
1411 struct ib_fast_reg_page_list
* (*alloc_fast_reg_page_list
)(struct ib_device
*device
,
1413 void (*free_fast_reg_page_list
)(struct ib_fast_reg_page_list
*page_list
);
1414 int (*rereg_phys_mr
)(struct ib_mr
*mr
,
1417 struct ib_phys_buf
*phys_buf_array
,
1419 int mr_access_flags
,
1421 struct ib_mw
* (*alloc_mw
)(struct ib_pd
*pd
,
1422 enum ib_mw_type type
);
1423 int (*bind_mw
)(struct ib_qp
*qp
,
1425 struct ib_mw_bind
*mw_bind
);
1426 int (*dealloc_mw
)(struct ib_mw
*mw
);
1427 struct ib_fmr
* (*alloc_fmr
)(struct ib_pd
*pd
,
1428 int mr_access_flags
,
1429 struct ib_fmr_attr
*fmr_attr
);
1430 int (*map_phys_fmr
)(struct ib_fmr
*fmr
,
1431 u64
*page_list
, int list_len
,
1433 int (*unmap_fmr
)(struct list_head
*fmr_list
);
1434 int (*dealloc_fmr
)(struct ib_fmr
*fmr
);
1435 int (*attach_mcast
)(struct ib_qp
*qp
,
1438 int (*detach_mcast
)(struct ib_qp
*qp
,
1441 int (*process_mad
)(struct ib_device
*device
,
1442 int process_mad_flags
,
1444 struct ib_wc
*in_wc
,
1445 struct ib_grh
*in_grh
,
1446 struct ib_mad
*in_mad
,
1447 struct ib_mad
*out_mad
);
1448 struct ib_xrcd
* (*alloc_xrcd
)(struct ib_device
*device
,
1449 struct ib_ucontext
*ucontext
,
1450 struct ib_udata
*udata
);
1451 int (*dealloc_xrcd
)(struct ib_xrcd
*xrcd
);
1452 struct ib_flow
* (*create_flow
)(struct ib_qp
*qp
,
1456 int (*destroy_flow
)(struct ib_flow
*flow_id
);
1458 struct ib_dma_mapping_ops
*dma_ops
;
1460 struct module
*owner
;
1462 struct kobject
*ports_parent
;
1463 struct list_head port_list
;
1466 IB_DEV_UNINITIALIZED
,
1472 u64 uverbs_cmd_mask
;
1473 u64 uverbs_ex_cmd_mask
;
1484 void (*add
) (struct ib_device
*);
1485 void (*remove
)(struct ib_device
*);
1487 struct list_head list
;
1490 struct ib_device
*ib_alloc_device(size_t size
);
1491 void ib_dealloc_device(struct ib_device
*device
);
1493 int ib_register_device(struct ib_device
*device
,
1494 int (*port_callback
)(struct ib_device
*,
1495 u8
, struct kobject
*));
1496 void ib_unregister_device(struct ib_device
*device
);
1498 int ib_register_client (struct ib_client
*client
);
1499 void ib_unregister_client(struct ib_client
*client
);
1501 void *ib_get_client_data(struct ib_device
*device
, struct ib_client
*client
);
1502 void ib_set_client_data(struct ib_device
*device
, struct ib_client
*client
,
1505 static inline int ib_copy_from_udata(void *dest
, struct ib_udata
*udata
, size_t len
)
1507 return copy_from_user(dest
, udata
->inbuf
, len
) ? -EFAULT
: 0;
1510 static inline int ib_copy_to_udata(struct ib_udata
*udata
, void *src
, size_t len
)
1512 return copy_to_user(udata
->outbuf
, src
, len
) ? -EFAULT
: 0;
1516 * ib_modify_qp_is_ok - Check that the supplied attribute mask
1517 * contains all required attributes and no attributes not allowed for
1518 * the given QP state transition.
1519 * @cur_state: Current QP state
1520 * @next_state: Next QP state
1522 * @mask: Mask of supplied QP attributes
1523 * @ll : link layer of port
1525 * This function is a helper function that a low-level driver's
1526 * modify_qp method can use to validate the consumer's input. It
1527 * checks that cur_state and next_state are valid QP states, that a
1528 * transition from cur_state to next_state is allowed by the IB spec,
1529 * and that the attribute mask supplied is allowed for the transition.
1531 int ib_modify_qp_is_ok(enum ib_qp_state cur_state
, enum ib_qp_state next_state
,
1532 enum ib_qp_type type
, enum ib_qp_attr_mask mask
,
1533 enum rdma_link_layer ll
);
1535 int ib_register_event_handler (struct ib_event_handler
*event_handler
);
1536 int ib_unregister_event_handler(struct ib_event_handler
*event_handler
);
1537 void ib_dispatch_event(struct ib_event
*event
);
1539 int ib_query_device(struct ib_device
*device
,
1540 struct ib_device_attr
*device_attr
);
1542 int ib_query_port(struct ib_device
*device
,
1543 u8 port_num
, struct ib_port_attr
*port_attr
);
1545 enum rdma_link_layer
rdma_port_get_link_layer(struct ib_device
*device
,
1548 int ib_query_gid(struct ib_device
*device
,
1549 u8 port_num
, int index
, union ib_gid
*gid
);
1551 int ib_query_pkey(struct ib_device
*device
,
1552 u8 port_num
, u16 index
, u16
*pkey
);
1554 int ib_modify_device(struct ib_device
*device
,
1555 int device_modify_mask
,
1556 struct ib_device_modify
*device_modify
);
1558 int ib_modify_port(struct ib_device
*device
,
1559 u8 port_num
, int port_modify_mask
,
1560 struct ib_port_modify
*port_modify
);
1562 int ib_find_gid(struct ib_device
*device
, union ib_gid
*gid
,
1563 u8
*port_num
, u16
*index
);
1565 int ib_find_pkey(struct ib_device
*device
,
1566 u8 port_num
, u16 pkey
, u16
*index
);
1569 * ib_alloc_pd - Allocates an unused protection domain.
1570 * @device: The device on which to allocate the protection domain.
1572 * A protection domain object provides an association between QPs, shared
1573 * receive queues, address handles, memory regions, and memory windows.
1575 struct ib_pd
*ib_alloc_pd(struct ib_device
*device
);
1578 * ib_dealloc_pd - Deallocates a protection domain.
1579 * @pd: The protection domain to deallocate.
1581 int ib_dealloc_pd(struct ib_pd
*pd
);
1584 * ib_create_ah - Creates an address handle for the given address vector.
1585 * @pd: The protection domain associated with the address handle.
1586 * @ah_attr: The attributes of the address vector.
1588 * The address handle is used to reference a local or global destination
1589 * in all UD QP post sends.
1591 struct ib_ah
*ib_create_ah(struct ib_pd
*pd
, struct ib_ah_attr
*ah_attr
);
1594 * ib_init_ah_from_wc - Initializes address handle attributes from a
1596 * @device: Device on which the received message arrived.
1597 * @port_num: Port on which the received message arrived.
1598 * @wc: Work completion associated with the received message.
1599 * @grh: References the received global route header. This parameter is
1600 * ignored unless the work completion indicates that the GRH is valid.
1601 * @ah_attr: Returned attributes that can be used when creating an address
1602 * handle for replying to the message.
1604 int ib_init_ah_from_wc(struct ib_device
*device
, u8 port_num
, struct ib_wc
*wc
,
1605 struct ib_grh
*grh
, struct ib_ah_attr
*ah_attr
);
1608 * ib_create_ah_from_wc - Creates an address handle associated with the
1609 * sender of the specified work completion.
1610 * @pd: The protection domain associated with the address handle.
1611 * @wc: Work completion information associated with a received message.
1612 * @grh: References the received global route header. This parameter is
1613 * ignored unless the work completion indicates that the GRH is valid.
1614 * @port_num: The outbound port number to associate with the address.
1616 * The address handle is used to reference a local or global destination
1617 * in all UD QP post sends.
1619 struct ib_ah
*ib_create_ah_from_wc(struct ib_pd
*pd
, struct ib_wc
*wc
,
1620 struct ib_grh
*grh
, u8 port_num
);
1623 * ib_modify_ah - Modifies the address vector associated with an address
1625 * @ah: The address handle to modify.
1626 * @ah_attr: The new address vector attributes to associate with the
1629 int ib_modify_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
);
1632 * ib_query_ah - Queries the address vector associated with an address
1634 * @ah: The address handle to query.
1635 * @ah_attr: The address vector attributes associated with the address
1638 int ib_query_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
);
1641 * ib_destroy_ah - Destroys an address handle.
1642 * @ah: The address handle to destroy.
1644 int ib_destroy_ah(struct ib_ah
*ah
);
1647 * ib_create_srq - Creates a SRQ associated with the specified protection
1649 * @pd: The protection domain associated with the SRQ.
1650 * @srq_init_attr: A list of initial attributes required to create the
1651 * SRQ. If SRQ creation succeeds, then the attributes are updated to
1652 * the actual capabilities of the created SRQ.
1654 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
1655 * requested size of the SRQ, and set to the actual values allocated
1656 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
1657 * will always be at least as large as the requested values.
1659 struct ib_srq
*ib_create_srq(struct ib_pd
*pd
,
1660 struct ib_srq_init_attr
*srq_init_attr
);
1663 * ib_modify_srq - Modifies the attributes for the specified SRQ.
1664 * @srq: The SRQ to modify.
1665 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
1666 * the current values of selected SRQ attributes are returned.
1667 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
1668 * are being modified.
1670 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
1671 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
1672 * the number of receives queued drops below the limit.
1674 int ib_modify_srq(struct ib_srq
*srq
,
1675 struct ib_srq_attr
*srq_attr
,
1676 enum ib_srq_attr_mask srq_attr_mask
);
1679 * ib_query_srq - Returns the attribute list and current values for the
1681 * @srq: The SRQ to query.
1682 * @srq_attr: The attributes of the specified SRQ.
1684 int ib_query_srq(struct ib_srq
*srq
,
1685 struct ib_srq_attr
*srq_attr
);
1688 * ib_destroy_srq - Destroys the specified SRQ.
1689 * @srq: The SRQ to destroy.
1691 int ib_destroy_srq(struct ib_srq
*srq
);
1694 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
1695 * @srq: The SRQ to post the work request on.
1696 * @recv_wr: A list of work requests to post on the receive queue.
1697 * @bad_recv_wr: On an immediate failure, this parameter will reference
1698 * the work request that failed to be posted on the QP.
1700 static inline int ib_post_srq_recv(struct ib_srq
*srq
,
1701 struct ib_recv_wr
*recv_wr
,
1702 struct ib_recv_wr
**bad_recv_wr
)
1704 return srq
->device
->post_srq_recv(srq
, recv_wr
, bad_recv_wr
);
1708 * ib_create_qp - Creates a QP associated with the specified protection
1710 * @pd: The protection domain associated with the QP.
1711 * @qp_init_attr: A list of initial attributes required to create the
1712 * QP. If QP creation succeeds, then the attributes are updated to
1713 * the actual capabilities of the created QP.
1715 struct ib_qp
*ib_create_qp(struct ib_pd
*pd
,
1716 struct ib_qp_init_attr
*qp_init_attr
);
1719 * ib_modify_qp - Modifies the attributes for the specified QP and then
1720 * transitions the QP to the given state.
1721 * @qp: The QP to modify.
1722 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1723 * the current values of selected QP attributes are returned.
1724 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1725 * are being modified.
1727 int ib_modify_qp(struct ib_qp
*qp
,
1728 struct ib_qp_attr
*qp_attr
,
1732 * ib_query_qp - Returns the attribute list and current values for the
1734 * @qp: The QP to query.
1735 * @qp_attr: The attributes of the specified QP.
1736 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1737 * @qp_init_attr: Additional attributes of the selected QP.
1739 * The qp_attr_mask may be used to limit the query to gathering only the
1740 * selected attributes.
1742 int ib_query_qp(struct ib_qp
*qp
,
1743 struct ib_qp_attr
*qp_attr
,
1745 struct ib_qp_init_attr
*qp_init_attr
);
1748 * ib_destroy_qp - Destroys the specified QP.
1749 * @qp: The QP to destroy.
1751 int ib_destroy_qp(struct ib_qp
*qp
);
1754 * ib_open_qp - Obtain a reference to an existing sharable QP.
1755 * @xrcd - XRC domain
1756 * @qp_open_attr: Attributes identifying the QP to open.
1758 * Returns a reference to a sharable QP.
1760 struct ib_qp
*ib_open_qp(struct ib_xrcd
*xrcd
,
1761 struct ib_qp_open_attr
*qp_open_attr
);
1764 * ib_close_qp - Release an external reference to a QP.
1765 * @qp: The QP handle to release
1767 * The opened QP handle is released by the caller. The underlying
1768 * shared QP is not destroyed until all internal references are released.
1770 int ib_close_qp(struct ib_qp
*qp
);
1773 * ib_post_send - Posts a list of work requests to the send queue of
1775 * @qp: The QP to post the work request on.
1776 * @send_wr: A list of work requests to post on the send queue.
1777 * @bad_send_wr: On an immediate failure, this parameter will reference
1778 * the work request that failed to be posted on the QP.
1780 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
1781 * error is returned, the QP state shall not be affected,
1782 * ib_post_send() will return an immediate error after queueing any
1783 * earlier work requests in the list.
1785 static inline int ib_post_send(struct ib_qp
*qp
,
1786 struct ib_send_wr
*send_wr
,
1787 struct ib_send_wr
**bad_send_wr
)
1789 return qp
->device
->post_send(qp
, send_wr
, bad_send_wr
);
1793 * ib_post_recv - Posts a list of work requests to the receive queue of
1795 * @qp: The QP to post the work request on.
1796 * @recv_wr: A list of work requests to post on the receive queue.
1797 * @bad_recv_wr: On an immediate failure, this parameter will reference
1798 * the work request that failed to be posted on the QP.
1800 static inline int ib_post_recv(struct ib_qp
*qp
,
1801 struct ib_recv_wr
*recv_wr
,
1802 struct ib_recv_wr
**bad_recv_wr
)
1804 return qp
->device
->post_recv(qp
, recv_wr
, bad_recv_wr
);
1808 * ib_create_cq - Creates a CQ on the specified device.
1809 * @device: The device on which to create the CQ.
1810 * @comp_handler: A user-specified callback that is invoked when a
1811 * completion event occurs on the CQ.
1812 * @event_handler: A user-specified callback that is invoked when an
1813 * asynchronous event not associated with a completion occurs on the CQ.
1814 * @cq_context: Context associated with the CQ returned to the user via
1815 * the associated completion and event handlers.
1816 * @cqe: The minimum size of the CQ.
1817 * @comp_vector - Completion vector used to signal completion events.
1818 * Must be >= 0 and < context->num_comp_vectors.
1820 * Users can examine the cq structure to determine the actual CQ size.
1822 struct ib_cq
*ib_create_cq(struct ib_device
*device
,
1823 ib_comp_handler comp_handler
,
1824 void (*event_handler
)(struct ib_event
*, void *),
1825 void *cq_context
, int cqe
, int comp_vector
);
1828 * ib_resize_cq - Modifies the capacity of the CQ.
1829 * @cq: The CQ to resize.
1830 * @cqe: The minimum size of the CQ.
1832 * Users can examine the cq structure to determine the actual CQ size.
1834 int ib_resize_cq(struct ib_cq
*cq
, int cqe
);
1837 * ib_modify_cq - Modifies moderation params of the CQ
1838 * @cq: The CQ to modify.
1839 * @cq_count: number of CQEs that will trigger an event
1840 * @cq_period: max period of time in usec before triggering an event
1843 int ib_modify_cq(struct ib_cq
*cq
, u16 cq_count
, u16 cq_period
);
1846 * ib_destroy_cq - Destroys the specified CQ.
1847 * @cq: The CQ to destroy.
1849 int ib_destroy_cq(struct ib_cq
*cq
);
1852 * ib_poll_cq - poll a CQ for completion(s)
1853 * @cq:the CQ being polled
1854 * @num_entries:maximum number of completions to return
1855 * @wc:array of at least @num_entries &struct ib_wc where completions
1858 * Poll a CQ for (possibly multiple) completions. If the return value
1859 * is < 0, an error occurred. If the return value is >= 0, it is the
1860 * number of completions returned. If the return value is
1861 * non-negative and < num_entries, then the CQ was emptied.
1863 static inline int ib_poll_cq(struct ib_cq
*cq
, int num_entries
,
1866 return cq
->device
->poll_cq(cq
, num_entries
, wc
);
1870 * ib_peek_cq - Returns the number of unreaped completions currently
1871 * on the specified CQ.
1872 * @cq: The CQ to peek.
1873 * @wc_cnt: A minimum number of unreaped completions to check for.
1875 * If the number of unreaped completions is greater than or equal to wc_cnt,
1876 * this function returns wc_cnt, otherwise, it returns the actual number of
1877 * unreaped completions.
1879 int ib_peek_cq(struct ib_cq
*cq
, int wc_cnt
);
1882 * ib_req_notify_cq - Request completion notification on a CQ.
1883 * @cq: The CQ to generate an event for.
1885 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
1886 * to request an event on the next solicited event or next work
1887 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
1888 * may also be |ed in to request a hint about missed events, as
1892 * < 0 means an error occurred while requesting notification
1893 * == 0 means notification was requested successfully, and if
1894 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
1895 * were missed and it is safe to wait for another event. In
1896 * this case is it guaranteed that any work completions added
1897 * to the CQ since the last CQ poll will trigger a completion
1898 * notification event.
1899 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
1900 * in. It means that the consumer must poll the CQ again to
1901 * make sure it is empty to avoid missing an event because of a
1902 * race between requesting notification and an entry being
1903 * added to the CQ. This return value means it is possible
1904 * (but not guaranteed) that a work completion has been added
1905 * to the CQ since the last poll without triggering a
1906 * completion notification event.
1908 static inline int ib_req_notify_cq(struct ib_cq
*cq
,
1909 enum ib_cq_notify_flags flags
)
1911 return cq
->device
->req_notify_cq(cq
, flags
);
1915 * ib_req_ncomp_notif - Request completion notification when there are
1916 * at least the specified number of unreaped completions on the CQ.
1917 * @cq: The CQ to generate an event for.
1918 * @wc_cnt: The number of unreaped completions that should be on the
1919 * CQ before an event is generated.
1921 static inline int ib_req_ncomp_notif(struct ib_cq
*cq
, int wc_cnt
)
1923 return cq
->device
->req_ncomp_notif
?
1924 cq
->device
->req_ncomp_notif(cq
, wc_cnt
) :
1929 * ib_get_dma_mr - Returns a memory region for system memory that is
1931 * @pd: The protection domain associated with the memory region.
1932 * @mr_access_flags: Specifies the memory access rights.
1934 * Note that the ib_dma_*() functions defined below must be used
1935 * to create/destroy addresses used with the Lkey or Rkey returned
1936 * by ib_get_dma_mr().
1938 struct ib_mr
*ib_get_dma_mr(struct ib_pd
*pd
, int mr_access_flags
);
1941 * ib_dma_mapping_error - check a DMA addr for error
1942 * @dev: The device for which the dma_addr was created
1943 * @dma_addr: The DMA address to check
1945 static inline int ib_dma_mapping_error(struct ib_device
*dev
, u64 dma_addr
)
1948 return dev
->dma_ops
->mapping_error(dev
, dma_addr
);
1949 return dma_mapping_error(dev
->dma_device
, dma_addr
);
1953 * ib_dma_map_single - Map a kernel virtual address to DMA address
1954 * @dev: The device for which the dma_addr is to be created
1955 * @cpu_addr: The kernel virtual address
1956 * @size: The size of the region in bytes
1957 * @direction: The direction of the DMA
1959 static inline u64
ib_dma_map_single(struct ib_device
*dev
,
1960 void *cpu_addr
, size_t size
,
1961 enum dma_data_direction direction
)
1964 return dev
->dma_ops
->map_single(dev
, cpu_addr
, size
, direction
);
1965 return dma_map_single(dev
->dma_device
, cpu_addr
, size
, direction
);
1969 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
1970 * @dev: The device for which the DMA address was created
1971 * @addr: The DMA address
1972 * @size: The size of the region in bytes
1973 * @direction: The direction of the DMA
1975 static inline void ib_dma_unmap_single(struct ib_device
*dev
,
1976 u64 addr
, size_t size
,
1977 enum dma_data_direction direction
)
1980 dev
->dma_ops
->unmap_single(dev
, addr
, size
, direction
);
1982 dma_unmap_single(dev
->dma_device
, addr
, size
, direction
);
1985 static inline u64
ib_dma_map_single_attrs(struct ib_device
*dev
,
1986 void *cpu_addr
, size_t size
,
1987 enum dma_data_direction direction
,
1988 struct dma_attrs
*attrs
)
1990 return dma_map_single_attrs(dev
->dma_device
, cpu_addr
, size
,
1994 static inline void ib_dma_unmap_single_attrs(struct ib_device
*dev
,
1995 u64 addr
, size_t size
,
1996 enum dma_data_direction direction
,
1997 struct dma_attrs
*attrs
)
1999 return dma_unmap_single_attrs(dev
->dma_device
, addr
, size
,
2004 * ib_dma_map_page - Map a physical page to DMA address
2005 * @dev: The device for which the dma_addr is to be created
2006 * @page: The page to be mapped
2007 * @offset: The offset within the page
2008 * @size: The size of the region in bytes
2009 * @direction: The direction of the DMA
2011 static inline u64
ib_dma_map_page(struct ib_device
*dev
,
2013 unsigned long offset
,
2015 enum dma_data_direction direction
)
2018 return dev
->dma_ops
->map_page(dev
, page
, offset
, size
, direction
);
2019 return dma_map_page(dev
->dma_device
, page
, offset
, size
, direction
);
2023 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
2024 * @dev: The device for which the DMA address was created
2025 * @addr: The DMA address
2026 * @size: The size of the region in bytes
2027 * @direction: The direction of the DMA
2029 static inline void ib_dma_unmap_page(struct ib_device
*dev
,
2030 u64 addr
, size_t size
,
2031 enum dma_data_direction direction
)
2034 dev
->dma_ops
->unmap_page(dev
, addr
, size
, direction
);
2036 dma_unmap_page(dev
->dma_device
, addr
, size
, direction
);
2040 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
2041 * @dev: The device for which the DMA addresses are to be created
2042 * @sg: The array of scatter/gather entries
2043 * @nents: The number of scatter/gather entries
2044 * @direction: The direction of the DMA
2046 static inline int ib_dma_map_sg(struct ib_device
*dev
,
2047 struct scatterlist
*sg
, int nents
,
2048 enum dma_data_direction direction
)
2051 return dev
->dma_ops
->map_sg(dev
, sg
, nents
, direction
);
2052 return dma_map_sg(dev
->dma_device
, sg
, nents
, direction
);
2056 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
2057 * @dev: The device for which the DMA addresses were created
2058 * @sg: The array of scatter/gather entries
2059 * @nents: The number of scatter/gather entries
2060 * @direction: The direction of the DMA
2062 static inline void ib_dma_unmap_sg(struct ib_device
*dev
,
2063 struct scatterlist
*sg
, int nents
,
2064 enum dma_data_direction direction
)
2067 dev
->dma_ops
->unmap_sg(dev
, sg
, nents
, direction
);
2069 dma_unmap_sg(dev
->dma_device
, sg
, nents
, direction
);
2072 static inline int ib_dma_map_sg_attrs(struct ib_device
*dev
,
2073 struct scatterlist
*sg
, int nents
,
2074 enum dma_data_direction direction
,
2075 struct dma_attrs
*attrs
)
2077 return dma_map_sg_attrs(dev
->dma_device
, sg
, nents
, direction
, attrs
);
2080 static inline void ib_dma_unmap_sg_attrs(struct ib_device
*dev
,
2081 struct scatterlist
*sg
, int nents
,
2082 enum dma_data_direction direction
,
2083 struct dma_attrs
*attrs
)
2085 dma_unmap_sg_attrs(dev
->dma_device
, sg
, nents
, direction
, attrs
);
2088 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
2089 * @dev: The device for which the DMA addresses were created
2090 * @sg: The scatter/gather entry
2092 static inline u64
ib_sg_dma_address(struct ib_device
*dev
,
2093 struct scatterlist
*sg
)
2096 return dev
->dma_ops
->dma_address(dev
, sg
);
2097 return sg_dma_address(sg
);
2101 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
2102 * @dev: The device for which the DMA addresses were created
2103 * @sg: The scatter/gather entry
2105 static inline unsigned int ib_sg_dma_len(struct ib_device
*dev
,
2106 struct scatterlist
*sg
)
2109 return dev
->dma_ops
->dma_len(dev
, sg
);
2110 return sg_dma_len(sg
);
2114 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
2115 * @dev: The device for which the DMA address was created
2116 * @addr: The DMA address
2117 * @size: The size of the region in bytes
2118 * @dir: The direction of the DMA
2120 static inline void ib_dma_sync_single_for_cpu(struct ib_device
*dev
,
2123 enum dma_data_direction dir
)
2126 dev
->dma_ops
->sync_single_for_cpu(dev
, addr
, size
, dir
);
2128 dma_sync_single_for_cpu(dev
->dma_device
, addr
, size
, dir
);
2132 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
2133 * @dev: The device for which the DMA address was created
2134 * @addr: The DMA address
2135 * @size: The size of the region in bytes
2136 * @dir: The direction of the DMA
2138 static inline void ib_dma_sync_single_for_device(struct ib_device
*dev
,
2141 enum dma_data_direction dir
)
2144 dev
->dma_ops
->sync_single_for_device(dev
, addr
, size
, dir
);
2146 dma_sync_single_for_device(dev
->dma_device
, addr
, size
, dir
);
2150 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
2151 * @dev: The device for which the DMA address is requested
2152 * @size: The size of the region to allocate in bytes
2153 * @dma_handle: A pointer for returning the DMA address of the region
2154 * @flag: memory allocator flags
2156 static inline void *ib_dma_alloc_coherent(struct ib_device
*dev
,
2162 return dev
->dma_ops
->alloc_coherent(dev
, size
, dma_handle
, flag
);
2167 ret
= dma_alloc_coherent(dev
->dma_device
, size
, &handle
, flag
);
2168 *dma_handle
= handle
;
2174 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
2175 * @dev: The device for which the DMA addresses were allocated
2176 * @size: The size of the region
2177 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
2178 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
2180 static inline void ib_dma_free_coherent(struct ib_device
*dev
,
2181 size_t size
, void *cpu_addr
,
2185 dev
->dma_ops
->free_coherent(dev
, size
, cpu_addr
, dma_handle
);
2187 dma_free_coherent(dev
->dma_device
, size
, cpu_addr
, dma_handle
);
2191 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
2193 * @pd: The protection domain associated assigned to the registered region.
2194 * @phys_buf_array: Specifies a list of physical buffers to use in the
2196 * @num_phys_buf: Specifies the size of the phys_buf_array.
2197 * @mr_access_flags: Specifies the memory access rights.
2198 * @iova_start: The offset of the region's starting I/O virtual address.
2200 struct ib_mr
*ib_reg_phys_mr(struct ib_pd
*pd
,
2201 struct ib_phys_buf
*phys_buf_array
,
2203 int mr_access_flags
,
2207 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
2208 * Conceptually, this call performs the functions deregister memory region
2209 * followed by register physical memory region. Where possible,
2210 * resources are reused instead of deallocated and reallocated.
2211 * @mr: The memory region to modify.
2212 * @mr_rereg_mask: A bit-mask used to indicate which of the following
2213 * properties of the memory region are being modified.
2214 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
2215 * the new protection domain to associated with the memory region,
2216 * otherwise, this parameter is ignored.
2217 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
2218 * field specifies a list of physical buffers to use in the new
2219 * translation, otherwise, this parameter is ignored.
2220 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
2221 * field specifies the size of the phys_buf_array, otherwise, this
2222 * parameter is ignored.
2223 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
2224 * field specifies the new memory access rights, otherwise, this
2225 * parameter is ignored.
2226 * @iova_start: The offset of the region's starting I/O virtual address.
2228 int ib_rereg_phys_mr(struct ib_mr
*mr
,
2231 struct ib_phys_buf
*phys_buf_array
,
2233 int mr_access_flags
,
2237 * ib_query_mr - Retrieves information about a specific memory region.
2238 * @mr: The memory region to retrieve information about.
2239 * @mr_attr: The attributes of the specified memory region.
2241 int ib_query_mr(struct ib_mr
*mr
, struct ib_mr_attr
*mr_attr
);
2244 * ib_dereg_mr - Deregisters a memory region and removes it from the
2245 * HCA translation table.
2246 * @mr: The memory region to deregister.
2248 * This function can fail, if the memory region has memory windows bound to it.
2250 int ib_dereg_mr(struct ib_mr
*mr
);
2253 * ib_alloc_fast_reg_mr - Allocates memory region usable with the
2254 * IB_WR_FAST_REG_MR send work request.
2255 * @pd: The protection domain associated with the region.
2256 * @max_page_list_len: requested max physical buffer list length to be
2257 * used with fast register work requests for this MR.
2259 struct ib_mr
*ib_alloc_fast_reg_mr(struct ib_pd
*pd
, int max_page_list_len
);
2262 * ib_alloc_fast_reg_page_list - Allocates a page list array
2263 * @device - ib device pointer.
2264 * @page_list_len - size of the page list array to be allocated.
2266 * This allocates and returns a struct ib_fast_reg_page_list * and a
2267 * page_list array that is at least page_list_len in size. The actual
2268 * size is returned in max_page_list_len. The caller is responsible
2269 * for initializing the contents of the page_list array before posting
2270 * a send work request with the IB_WC_FAST_REG_MR opcode.
2272 * The page_list array entries must be translated using one of the
2273 * ib_dma_*() functions just like the addresses passed to
2274 * ib_map_phys_fmr(). Once the ib_post_send() is issued, the struct
2275 * ib_fast_reg_page_list must not be modified by the caller until the
2276 * IB_WC_FAST_REG_MR work request completes.
2278 struct ib_fast_reg_page_list
*ib_alloc_fast_reg_page_list(
2279 struct ib_device
*device
, int page_list_len
);
2282 * ib_free_fast_reg_page_list - Deallocates a previously allocated
2284 * @page_list - struct ib_fast_reg_page_list pointer to be deallocated.
2286 void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list
*page_list
);
2289 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
2291 * @mr - struct ib_mr pointer to be updated.
2292 * @newkey - new key to be used.
2294 static inline void ib_update_fast_reg_key(struct ib_mr
*mr
, u8 newkey
)
2296 mr
->lkey
= (mr
->lkey
& 0xffffff00) | newkey
;
2297 mr
->rkey
= (mr
->rkey
& 0xffffff00) | newkey
;
2301 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
2302 * for calculating a new rkey for type 2 memory windows.
2303 * @rkey - the rkey to increment.
2305 static inline u32
ib_inc_rkey(u32 rkey
)
2307 const u32 mask
= 0x000000ff;
2308 return ((rkey
+ 1) & mask
) | (rkey
& ~mask
);
2312 * ib_alloc_mw - Allocates a memory window.
2313 * @pd: The protection domain associated with the memory window.
2314 * @type: The type of the memory window (1 or 2).
2316 struct ib_mw
*ib_alloc_mw(struct ib_pd
*pd
, enum ib_mw_type type
);
2319 * ib_bind_mw - Posts a work request to the send queue of the specified
2320 * QP, which binds the memory window to the given address range and
2321 * remote access attributes.
2322 * @qp: QP to post the bind work request on.
2323 * @mw: The memory window to bind.
2324 * @mw_bind: Specifies information about the memory window, including
2325 * its address range, remote access rights, and associated memory region.
2327 * If there is no immediate error, the function will update the rkey member
2328 * of the mw parameter to its new value. The bind operation can still fail
2331 static inline int ib_bind_mw(struct ib_qp
*qp
,
2333 struct ib_mw_bind
*mw_bind
)
2335 /* XXX reference counting in corresponding MR? */
2336 return mw
->device
->bind_mw
?
2337 mw
->device
->bind_mw(qp
, mw
, mw_bind
) :
2342 * ib_dealloc_mw - Deallocates a memory window.
2343 * @mw: The memory window to deallocate.
2345 int ib_dealloc_mw(struct ib_mw
*mw
);
2348 * ib_alloc_fmr - Allocates a unmapped fast memory region.
2349 * @pd: The protection domain associated with the unmapped region.
2350 * @mr_access_flags: Specifies the memory access rights.
2351 * @fmr_attr: Attributes of the unmapped region.
2353 * A fast memory region must be mapped before it can be used as part of
2356 struct ib_fmr
*ib_alloc_fmr(struct ib_pd
*pd
,
2357 int mr_access_flags
,
2358 struct ib_fmr_attr
*fmr_attr
);
2361 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
2362 * @fmr: The fast memory region to associate with the pages.
2363 * @page_list: An array of physical pages to map to the fast memory region.
2364 * @list_len: The number of pages in page_list.
2365 * @iova: The I/O virtual address to use with the mapped region.
2367 static inline int ib_map_phys_fmr(struct ib_fmr
*fmr
,
2368 u64
*page_list
, int list_len
,
2371 return fmr
->device
->map_phys_fmr(fmr
, page_list
, list_len
, iova
);
2375 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
2376 * @fmr_list: A linked list of fast memory regions to unmap.
2378 int ib_unmap_fmr(struct list_head
*fmr_list
);
2381 * ib_dealloc_fmr - Deallocates a fast memory region.
2382 * @fmr: The fast memory region to deallocate.
2384 int ib_dealloc_fmr(struct ib_fmr
*fmr
);
2387 * ib_attach_mcast - Attaches the specified QP to a multicast group.
2388 * @qp: QP to attach to the multicast group. The QP must be type
2390 * @gid: Multicast group GID.
2391 * @lid: Multicast group LID in host byte order.
2393 * In order to send and receive multicast packets, subnet
2394 * administration must have created the multicast group and configured
2395 * the fabric appropriately. The port associated with the specified
2396 * QP must also be a member of the multicast group.
2398 int ib_attach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
);
2401 * ib_detach_mcast - Detaches the specified QP from a multicast group.
2402 * @qp: QP to detach from the multicast group.
2403 * @gid: Multicast group GID.
2404 * @lid: Multicast group LID in host byte order.
2406 int ib_detach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
);
2409 * ib_alloc_xrcd - Allocates an XRC domain.
2410 * @device: The device on which to allocate the XRC domain.
2412 struct ib_xrcd
*ib_alloc_xrcd(struct ib_device
*device
);
2415 * ib_dealloc_xrcd - Deallocates an XRC domain.
2416 * @xrcd: The XRC domain to deallocate.
2418 int ib_dealloc_xrcd(struct ib_xrcd
*xrcd
);
2420 struct ib_flow
*ib_create_flow(struct ib_qp
*qp
,
2421 struct ib_flow_attr
*flow_attr
, int domain
);
2422 int ib_destroy_flow(struct ib_flow
*flow_id
);
2424 static inline int ib_check_mr_access(int flags
)
2427 * Local write permission is required if remote write or
2428 * remote atomic permission is also requested.
2430 if (flags
& (IB_ACCESS_REMOTE_ATOMIC
| IB_ACCESS_REMOTE_WRITE
) &&
2431 !(flags
& IB_ACCESS_LOCAL_WRITE
))
2437 #endif /* IB_VERBS_H */