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 __attribute_const__ enum rdma_transport_type
84 rdma_node_get_transport(enum rdma_node_type node_type);
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),
126 IB_DEVICE_SIGNATURE_HANDOVER = (1<<30)
129 enum ib_signature_prot_cap {
130 IB_PROT_T10DIF_TYPE_1 = 1,
131 IB_PROT_T10DIF_TYPE_2 = 1 << 1,
132 IB_PROT_T10DIF_TYPE_3 = 1 << 2,
135 enum ib_signature_guard_cap {
136 IB_GUARD_T10DIF_CRC = 1,
137 IB_GUARD_T10DIF_CSUM = 1 << 1,
146 struct ib_device_attr {
148 __be64 sys_image_guid;
156 int device_cap_flags;
166 int max_qp_init_rd_atom;
167 int max_ee_init_rd_atom;
168 enum ib_atomic_cap atomic_cap;
169 enum ib_atomic_cap masked_atomic_cap;
176 int max_mcast_qp_attach;
177 int max_total_mcast_qp_attach;
184 unsigned int max_fast_reg_page_list_len;
186 u8 local_ca_ack_delay;
199 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
202 case IB_MTU_256: return 256;
203 case IB_MTU_512: return 512;
204 case IB_MTU_1024: return 1024;
205 case IB_MTU_2048: return 2048;
206 case IB_MTU_4096: return 4096;
217 IB_PORT_ACTIVE_DEFER = 5
220 enum ib_port_cap_flags {
222 IB_PORT_NOTICE_SUP = 1 << 2,
223 IB_PORT_TRAP_SUP = 1 << 3,
224 IB_PORT_OPT_IPD_SUP = 1 << 4,
225 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
226 IB_PORT_SL_MAP_SUP = 1 << 6,
227 IB_PORT_MKEY_NVRAM = 1 << 7,
228 IB_PORT_PKEY_NVRAM = 1 << 8,
229 IB_PORT_LED_INFO_SUP = 1 << 9,
230 IB_PORT_SM_DISABLED = 1 << 10,
231 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
232 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
233 IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14,
234 IB_PORT_CM_SUP = 1 << 16,
235 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
236 IB_PORT_REINIT_SUP = 1 << 18,
237 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
238 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
239 IB_PORT_DR_NOTICE_SUP = 1 << 21,
240 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
241 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
242 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
243 IB_PORT_CLIENT_REG_SUP = 1 << 25,
244 IB_PORT_IP_BASED_GIDS = 1 << 26
254 static inline int ib_width_enum_to_int(enum ib_port_width width)
257 case IB_WIDTH_1X: return 1;
258 case IB_WIDTH_4X: return 4;
259 case IB_WIDTH_8X: return 8;
260 case IB_WIDTH_12X: return 12;
274 struct ib_protocol_stats {
278 struct iw_protocol_stats {
281 u64 ipInTooBigErrors;
284 u64 ipInUnknownProtos;
285 u64 ipInTruncatedPkts;
288 u64 ipOutForwDatagrams;
320 union rdma_protocol_stats {
321 struct ib_protocol_stats ib;
322 struct iw_protocol_stats iw;
325 struct ib_port_attr {
326 enum ib_port_state state;
328 enum ib_mtu active_mtu;
347 enum ib_device_modify_flags {
348 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
349 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
352 struct ib_device_modify {
357 enum ib_port_modify_flags {
358 IB_PORT_SHUTDOWN = 1,
359 IB_PORT_INIT_TYPE = (1<<2),
360 IB_PORT_RESET_QKEY_CNTR = (1<<3)
363 struct ib_port_modify {
364 u32 set_port_cap_mask;
365 u32 clr_port_cap_mask;
373 IB_EVENT_QP_ACCESS_ERR,
377 IB_EVENT_PATH_MIG_ERR,
378 IB_EVENT_DEVICE_FATAL,
379 IB_EVENT_PORT_ACTIVE,
382 IB_EVENT_PKEY_CHANGE,
385 IB_EVENT_SRQ_LIMIT_REACHED,
386 IB_EVENT_QP_LAST_WQE_REACHED,
387 IB_EVENT_CLIENT_REREGISTER,
392 struct ib_device *device;
399 enum ib_event_type event;
402 struct ib_event_handler {
403 struct ib_device *device;
404 void (*handler)(struct ib_event_handler *, struct ib_event *);
405 struct list_head list;
408 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
410 (_ptr)->device = _device; \
411 (_ptr)->handler = _handler; \
412 INIT_LIST_HEAD(&(_ptr)->list); \
415 struct ib_global_route {
424 __be32 version_tclass_flow;
433 IB_MULTICAST_QPN = 0xffffff
436 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
443 IB_RATE_PORT_CURRENT = 0,
444 IB_RATE_2_5_GBPS = 2,
452 IB_RATE_120_GBPS = 10,
453 IB_RATE_14_GBPS = 11,
454 IB_RATE_56_GBPS = 12,
455 IB_RATE_112_GBPS = 13,
456 IB_RATE_168_GBPS = 14,
457 IB_RATE_25_GBPS = 15,
458 IB_RATE_100_GBPS = 16,
459 IB_RATE_200_GBPS = 17,
460 IB_RATE_300_GBPS = 18
464 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
465 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
466 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
467 * @rate: rate to convert.
469 __attribute_const__ int ib_rate_to_mult(enum ib_rate rate);
472 * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
473 * For example, IB_RATE_2_5_GBPS will be converted to 2500.
474 * @rate: rate to convert.
476 __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate);
478 enum ib_mr_create_flags {
479 IB_MR_SIGNATURE_EN = 1,
483 * ib_mr_init_attr - Memory region init attributes passed to routine
485 * @max_reg_descriptors: max number of registration descriptors that
486 * may be used with registration work requests.
487 * @flags: MR creation flags bit mask.
489 struct ib_mr_init_attr {
490 int max_reg_descriptors;
494 enum ib_signature_type {
499 * T10-DIF Signature types
500 * T10-DIF types are defined by SCSI
503 enum ib_t10_dif_type {
511 * Signature T10-DIF block-guard types
512 * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules.
513 * IB_T10DIF_CSUM: Corresponds to IP checksum rules.
515 enum ib_t10_dif_bg_type {
521 * struct ib_t10_dif_domain - Parameters specific for T10-DIF
523 * @type: T10-DIF type (0|1|2|3)
524 * @bg_type: T10-DIF block guard type (CRC|CSUM)
525 * @pi_interval: protection information interval.
526 * @bg: seed of guard computation.
527 * @app_tag: application tag of guard block
528 * @ref_tag: initial guard block reference tag.
529 * @type3_inc_reftag: T10-DIF type 3 does not state
530 * about the reference tag, it is the user
531 * choice to increment it or not.
533 struct ib_t10_dif_domain {
534 enum ib_t10_dif_type type;
535 enum ib_t10_dif_bg_type bg_type;
540 bool type3_inc_reftag;
544 * struct ib_sig_domain - Parameters for signature domain
545 * @sig_type: specific signauture type
546 * @sig: union of all signature domain attributes that may
547 * be used to set domain layout.
549 struct ib_sig_domain {
550 enum ib_signature_type sig_type;
552 struct ib_t10_dif_domain dif;
557 * struct ib_sig_attrs - Parameters for signature handover operation
558 * @check_mask: bitmask for signature byte check (8 bytes)
559 * @mem: memory domain layout desciptor.
560 * @wire: wire domain layout desciptor.
562 struct ib_sig_attrs {
564 struct ib_sig_domain mem;
565 struct ib_sig_domain wire;
568 enum ib_sig_err_type {
575 * struct ib_sig_err - signature error descriptor
578 enum ib_sig_err_type err_type;
585 enum ib_mr_status_check {
586 IB_MR_CHECK_SIG_STATUS = 1,
590 * struct ib_mr_status - Memory region status container
592 * @fail_status: Bitmask of MR checks status. For each
593 * failed check a corresponding status bit is set.
594 * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS
597 struct ib_mr_status {
599 struct ib_sig_err sig_err;
603 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
605 * @mult: multiple to convert.
607 __attribute_const__ enum ib_rate mult_to_ib_rate(int mult);
610 struct ib_global_route grh;
625 IB_WC_LOC_EEC_OP_ERR,
630 IB_WC_LOC_ACCESS_ERR,
631 IB_WC_REM_INV_REQ_ERR,
632 IB_WC_REM_ACCESS_ERR,
635 IB_WC_RNR_RETRY_EXC_ERR,
636 IB_WC_LOC_RDD_VIOL_ERR,
637 IB_WC_REM_INV_RD_REQ_ERR,
640 IB_WC_INV_EEC_STATE_ERR,
642 IB_WC_RESP_TIMEOUT_ERR,
656 IB_WC_MASKED_COMP_SWAP,
657 IB_WC_MASKED_FETCH_ADD,
659 * Set value of IB_WC_RECV so consumers can test if a completion is a
660 * receive by testing (opcode & IB_WC_RECV).
663 IB_WC_RECV_RDMA_WITH_IMM
668 IB_WC_WITH_IMM = (1<<1),
669 IB_WC_WITH_INVALIDATE = (1<<2),
670 IB_WC_IP_CSUM_OK = (1<<3),
671 IB_WC_WITH_SMAC = (1<<4),
672 IB_WC_WITH_VLAN = (1<<5),
677 enum ib_wc_status status;
678 enum ib_wc_opcode opcode;
692 u8 port_num; /* valid only for DR SMPs on switches */
697 enum ib_cq_notify_flags {
698 IB_CQ_SOLICITED = 1 << 0,
699 IB_CQ_NEXT_COMP = 1 << 1,
700 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
701 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
709 enum ib_srq_attr_mask {
710 IB_SRQ_MAX_WR = 1 << 0,
711 IB_SRQ_LIMIT = 1 << 1,
720 struct ib_srq_init_attr {
721 void (*event_handler)(struct ib_event *, void *);
723 struct ib_srq_attr attr;
724 enum ib_srq_type srq_type;
728 struct ib_xrcd *xrcd;
749 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
750 * here (and in that order) since the MAD layer uses them as
751 * indices into a 2-entry table.
760 IB_QPT_RAW_ETHERTYPE,
761 IB_QPT_RAW_PACKET = 8,
765 /* Reserve a range for qp types internal to the low level driver.
766 * These qp types will not be visible at the IB core layer, so the
767 * IB_QPT_MAX usages should not be affected in the core layer
769 IB_QPT_RESERVED1 = 0x1000,
781 enum ib_qp_create_flags {
782 IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0,
783 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
784 IB_QP_CREATE_NETIF_QP = 1 << 5,
785 IB_QP_CREATE_SIGNATURE_EN = 1 << 6,
786 IB_QP_CREATE_USE_GFP_NOIO = 1 << 7,
787 /* reserve bits 26-31 for low level drivers' internal use */
788 IB_QP_CREATE_RESERVED_START = 1 << 26,
789 IB_QP_CREATE_RESERVED_END = 1 << 31,
794 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
795 * callback to destroy the passed in QP.
798 struct ib_qp_init_attr {
799 void (*event_handler)(struct ib_event *, void *);
801 struct ib_cq *send_cq;
802 struct ib_cq *recv_cq;
804 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
805 struct ib_qp_cap cap;
806 enum ib_sig_type sq_sig_type;
807 enum ib_qp_type qp_type;
808 enum ib_qp_create_flags create_flags;
809 u8 port_num; /* special QP types only */
812 struct ib_qp_open_attr {
813 void (*event_handler)(struct ib_event *, void *);
816 enum ib_qp_type qp_type;
819 enum ib_rnr_timeout {
820 IB_RNR_TIMER_655_36 = 0,
821 IB_RNR_TIMER_000_01 = 1,
822 IB_RNR_TIMER_000_02 = 2,
823 IB_RNR_TIMER_000_03 = 3,
824 IB_RNR_TIMER_000_04 = 4,
825 IB_RNR_TIMER_000_06 = 5,
826 IB_RNR_TIMER_000_08 = 6,
827 IB_RNR_TIMER_000_12 = 7,
828 IB_RNR_TIMER_000_16 = 8,
829 IB_RNR_TIMER_000_24 = 9,
830 IB_RNR_TIMER_000_32 = 10,
831 IB_RNR_TIMER_000_48 = 11,
832 IB_RNR_TIMER_000_64 = 12,
833 IB_RNR_TIMER_000_96 = 13,
834 IB_RNR_TIMER_001_28 = 14,
835 IB_RNR_TIMER_001_92 = 15,
836 IB_RNR_TIMER_002_56 = 16,
837 IB_RNR_TIMER_003_84 = 17,
838 IB_RNR_TIMER_005_12 = 18,
839 IB_RNR_TIMER_007_68 = 19,
840 IB_RNR_TIMER_010_24 = 20,
841 IB_RNR_TIMER_015_36 = 21,
842 IB_RNR_TIMER_020_48 = 22,
843 IB_RNR_TIMER_030_72 = 23,
844 IB_RNR_TIMER_040_96 = 24,
845 IB_RNR_TIMER_061_44 = 25,
846 IB_RNR_TIMER_081_92 = 26,
847 IB_RNR_TIMER_122_88 = 27,
848 IB_RNR_TIMER_163_84 = 28,
849 IB_RNR_TIMER_245_76 = 29,
850 IB_RNR_TIMER_327_68 = 30,
851 IB_RNR_TIMER_491_52 = 31
854 enum ib_qp_attr_mask {
856 IB_QP_CUR_STATE = (1<<1),
857 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
858 IB_QP_ACCESS_FLAGS = (1<<3),
859 IB_QP_PKEY_INDEX = (1<<4),
863 IB_QP_PATH_MTU = (1<<8),
864 IB_QP_TIMEOUT = (1<<9),
865 IB_QP_RETRY_CNT = (1<<10),
866 IB_QP_RNR_RETRY = (1<<11),
867 IB_QP_RQ_PSN = (1<<12),
868 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
869 IB_QP_ALT_PATH = (1<<14),
870 IB_QP_MIN_RNR_TIMER = (1<<15),
871 IB_QP_SQ_PSN = (1<<16),
872 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
873 IB_QP_PATH_MIG_STATE = (1<<18),
875 IB_QP_DEST_QPN = (1<<20),
876 IB_QP_SMAC = (1<<21),
877 IB_QP_ALT_SMAC = (1<<22),
879 IB_QP_ALT_VID = (1<<24),
904 enum ib_qp_state qp_state;
905 enum ib_qp_state cur_qp_state;
906 enum ib_mtu path_mtu;
907 enum ib_mig_state path_mig_state;
913 struct ib_qp_cap cap;
914 struct ib_ah_attr ah_attr;
915 struct ib_ah_attr alt_ah_attr;
918 u8 en_sqd_async_notify;
921 u8 max_dest_rd_atomic;
930 u8 alt_smac[ETH_ALEN];
937 IB_WR_RDMA_WRITE_WITH_IMM,
941 IB_WR_ATOMIC_CMP_AND_SWP,
942 IB_WR_ATOMIC_FETCH_AND_ADD,
945 IB_WR_RDMA_READ_WITH_INV,
948 IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
949 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
952 /* reserve values for low level drivers' internal use.
953 * These values will not be used at all in the ib core layer.
955 IB_WR_RESERVED1 = 0xf0,
969 IB_SEND_SIGNALED = (1<<1),
970 IB_SEND_SOLICITED = (1<<2),
971 IB_SEND_INLINE = (1<<3),
972 IB_SEND_IP_CSUM = (1<<4),
974 /* reserve bits 26-31 for low level drivers' internal use */
975 IB_SEND_RESERVED_START = (1 << 26),
976 IB_SEND_RESERVED_END = (1 << 31),
985 struct ib_fast_reg_page_list {
986 struct ib_device *device;
988 unsigned int max_page_list_len;
992 * struct ib_mw_bind_info - Parameters for a memory window bind operation.
993 * @mr: A memory region to bind the memory window to.
994 * @addr: The address where the memory window should begin.
995 * @length: The length of the memory window, in bytes.
996 * @mw_access_flags: Access flags from enum ib_access_flags for the window.
998 * This struct contains the shared parameters for type 1 and type 2
999 * memory window bind operations.
1001 struct ib_mw_bind_info {
1005 int mw_access_flags;
1009 struct ib_send_wr *next;
1011 struct ib_sge *sg_list;
1013 enum ib_wr_opcode opcode;
1017 u32 invalidate_rkey;
1028 u64 compare_add_mask;
1039 u16 pkey_index; /* valid for GSI only */
1040 u8 port_num; /* valid for DR SMPs on switch only */
1044 struct ib_fast_reg_page_list *page_list;
1045 unsigned int page_shift;
1046 unsigned int page_list_len;
1053 /* The new rkey for the memory window. */
1055 struct ib_mw_bind_info bind_info;
1058 struct ib_sig_attrs *sig_attrs;
1059 struct ib_mr *sig_mr;
1061 struct ib_sge *prot;
1064 u32 xrc_remote_srq_num; /* XRC TGT QPs only */
1068 struct ib_recv_wr *next;
1070 struct ib_sge *sg_list;
1074 enum ib_access_flags {
1075 IB_ACCESS_LOCAL_WRITE = 1,
1076 IB_ACCESS_REMOTE_WRITE = (1<<1),
1077 IB_ACCESS_REMOTE_READ = (1<<2),
1078 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
1079 IB_ACCESS_MW_BIND = (1<<4),
1080 IB_ZERO_BASED = (1<<5)
1083 struct ib_phys_buf {
1090 u64 device_virt_addr;
1092 int mr_access_flags;
1097 enum ib_mr_rereg_flags {
1098 IB_MR_REREG_TRANS = 1,
1099 IB_MR_REREG_PD = (1<<1),
1100 IB_MR_REREG_ACCESS = (1<<2),
1101 IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
1105 * struct ib_mw_bind - Parameters for a type 1 memory window bind operation.
1106 * @wr_id: Work request id.
1107 * @send_flags: Flags from ib_send_flags enum.
1108 * @bind_info: More parameters of the bind operation.
1113 struct ib_mw_bind_info bind_info;
1116 struct ib_fmr_attr {
1122 struct ib_ucontext {
1123 struct ib_device *device;
1124 struct list_head pd_list;
1125 struct list_head mr_list;
1126 struct list_head mw_list;
1127 struct list_head cq_list;
1128 struct list_head qp_list;
1129 struct list_head srq_list;
1130 struct list_head ah_list;
1131 struct list_head xrcd_list;
1132 struct list_head rule_list;
1137 u64 user_handle; /* handle given to us by userspace */
1138 struct ib_ucontext *context; /* associated user context */
1139 void *object; /* containing object */
1140 struct list_head list; /* link to context's list */
1141 int id; /* index into kernel idr */
1143 struct rw_semaphore mutex; /* protects .live */
1148 const void __user *inbuf;
1149 void __user *outbuf;
1155 struct ib_device *device;
1156 struct ib_uobject *uobject;
1157 atomic_t usecnt; /* count all resources */
1161 struct ib_device *device;
1162 atomic_t usecnt; /* count all exposed resources */
1163 struct inode *inode;
1165 struct mutex tgt_qp_mutex;
1166 struct list_head tgt_qp_list;
1170 struct ib_device *device;
1172 struct ib_uobject *uobject;
1175 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
1178 struct ib_device *device;
1179 struct ib_uobject *uobject;
1180 ib_comp_handler comp_handler;
1181 void (*event_handler)(struct ib_event *, void *);
1184 atomic_t usecnt; /* count number of work queues */
1188 struct ib_device *device;
1190 struct ib_uobject *uobject;
1191 void (*event_handler)(struct ib_event *, void *);
1193 enum ib_srq_type srq_type;
1198 struct ib_xrcd *xrcd;
1206 struct ib_device *device;
1208 struct ib_cq *send_cq;
1209 struct ib_cq *recv_cq;
1211 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1212 struct list_head xrcd_list;
1213 /* count times opened, mcast attaches, flow attaches */
1215 struct list_head open_list;
1216 struct ib_qp *real_qp;
1217 struct ib_uobject *uobject;
1218 void (*event_handler)(struct ib_event *, void *);
1221 enum ib_qp_type qp_type;
1225 struct ib_device *device;
1227 struct ib_uobject *uobject;
1230 atomic_t usecnt; /* count number of MWs */
1234 struct ib_device *device;
1236 struct ib_uobject *uobject;
1238 enum ib_mw_type type;
1242 struct ib_device *device;
1244 struct list_head list;
1249 /* Supported steering options */
1250 enum ib_flow_attr_type {
1251 /* steering according to rule specifications */
1252 IB_FLOW_ATTR_NORMAL = 0x0,
1253 /* default unicast and multicast rule -
1254 * receive all Eth traffic which isn't steered to any QP
1256 IB_FLOW_ATTR_ALL_DEFAULT = 0x1,
1257 /* default multicast rule -
1258 * receive all Eth multicast traffic which isn't steered to any QP
1260 IB_FLOW_ATTR_MC_DEFAULT = 0x2,
1261 /* sniffer rule - receive all port traffic */
1262 IB_FLOW_ATTR_SNIFFER = 0x3
1265 /* Supported steering header types */
1266 enum ib_flow_spec_type {
1268 IB_FLOW_SPEC_ETH = 0x20,
1269 IB_FLOW_SPEC_IB = 0x22,
1271 IB_FLOW_SPEC_IPV4 = 0x30,
1273 IB_FLOW_SPEC_TCP = 0x40,
1274 IB_FLOW_SPEC_UDP = 0x41
1276 #define IB_FLOW_SPEC_LAYER_MASK 0xF0
1277 #define IB_FLOW_SPEC_SUPPORT_LAYERS 4
1279 /* Flow steering rule priority is set according to it's domain.
1280 * Lower domain value means higher priority.
1282 enum ib_flow_domain {
1283 IB_FLOW_DOMAIN_USER,
1284 IB_FLOW_DOMAIN_ETHTOOL,
1287 IB_FLOW_DOMAIN_NUM /* Must be last */
1290 struct ib_flow_eth_filter {
1297 struct ib_flow_spec_eth {
1298 enum ib_flow_spec_type type;
1300 struct ib_flow_eth_filter val;
1301 struct ib_flow_eth_filter mask;
1304 struct ib_flow_ib_filter {
1309 struct ib_flow_spec_ib {
1310 enum ib_flow_spec_type type;
1312 struct ib_flow_ib_filter val;
1313 struct ib_flow_ib_filter mask;
1316 struct ib_flow_ipv4_filter {
1321 struct ib_flow_spec_ipv4 {
1322 enum ib_flow_spec_type type;
1324 struct ib_flow_ipv4_filter val;
1325 struct ib_flow_ipv4_filter mask;
1328 struct ib_flow_tcp_udp_filter {
1333 struct ib_flow_spec_tcp_udp {
1334 enum ib_flow_spec_type type;
1336 struct ib_flow_tcp_udp_filter val;
1337 struct ib_flow_tcp_udp_filter mask;
1340 union ib_flow_spec {
1342 enum ib_flow_spec_type type;
1345 struct ib_flow_spec_eth eth;
1346 struct ib_flow_spec_ib ib;
1347 struct ib_flow_spec_ipv4 ipv4;
1348 struct ib_flow_spec_tcp_udp tcp_udp;
1351 struct ib_flow_attr {
1352 enum ib_flow_attr_type type;
1358 /* Following are the optional layers according to user request
1359 * struct ib_flow_spec_xxx
1360 * struct ib_flow_spec_yyy
1366 struct ib_uobject *uobject;
1372 enum ib_process_mad_flags {
1373 IB_MAD_IGNORE_MKEY = 1,
1374 IB_MAD_IGNORE_BKEY = 2,
1375 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
1378 enum ib_mad_result {
1379 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
1380 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
1381 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
1382 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
1385 #define IB_DEVICE_NAME_MAX 64
1389 struct ib_event_handler event_handler;
1390 struct ib_pkey_cache **pkey_cache;
1391 struct ib_gid_cache **gid_cache;
1395 struct ib_dma_mapping_ops {
1396 int (*mapping_error)(struct ib_device *dev,
1398 u64 (*map_single)(struct ib_device *dev,
1399 void *ptr, size_t size,
1400 enum dma_data_direction direction);
1401 void (*unmap_single)(struct ib_device *dev,
1402 u64 addr, size_t size,
1403 enum dma_data_direction direction);
1404 u64 (*map_page)(struct ib_device *dev,
1405 struct page *page, unsigned long offset,
1407 enum dma_data_direction direction);
1408 void (*unmap_page)(struct ib_device *dev,
1409 u64 addr, size_t size,
1410 enum dma_data_direction direction);
1411 int (*map_sg)(struct ib_device *dev,
1412 struct scatterlist *sg, int nents,
1413 enum dma_data_direction direction);
1414 void (*unmap_sg)(struct ib_device *dev,
1415 struct scatterlist *sg, int nents,
1416 enum dma_data_direction direction);
1417 void (*sync_single_for_cpu)(struct ib_device *dev,
1420 enum dma_data_direction dir);
1421 void (*sync_single_for_device)(struct ib_device *dev,
1424 enum dma_data_direction dir);
1425 void *(*alloc_coherent)(struct ib_device *dev,
1429 void (*free_coherent)(struct ib_device *dev,
1430 size_t size, void *cpu_addr,
1437 struct device *dma_device;
1439 char name[IB_DEVICE_NAME_MAX];
1441 struct list_head event_handler_list;
1442 spinlock_t event_handler_lock;
1444 spinlock_t client_data_lock;
1445 struct list_head core_list;
1446 struct list_head client_data_list;
1448 struct ib_cache cache;
1452 int num_comp_vectors;
1454 struct iw_cm_verbs *iwcm;
1456 int (*get_protocol_stats)(struct ib_device *device,
1457 union rdma_protocol_stats *stats);
1458 int (*query_device)(struct ib_device *device,
1459 struct ib_device_attr *device_attr);
1460 int (*query_port)(struct ib_device *device,
1462 struct ib_port_attr *port_attr);
1463 enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
1465 int (*query_gid)(struct ib_device *device,
1466 u8 port_num, int index,
1468 int (*query_pkey)(struct ib_device *device,
1469 u8 port_num, u16 index, u16 *pkey);
1470 int (*modify_device)(struct ib_device *device,
1471 int device_modify_mask,
1472 struct ib_device_modify *device_modify);
1473 int (*modify_port)(struct ib_device *device,
1474 u8 port_num, int port_modify_mask,
1475 struct ib_port_modify *port_modify);
1476 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
1477 struct ib_udata *udata);
1478 int (*dealloc_ucontext)(struct ib_ucontext *context);
1479 int (*mmap)(struct ib_ucontext *context,
1480 struct vm_area_struct *vma);
1481 struct ib_pd * (*alloc_pd)(struct ib_device *device,
1482 struct ib_ucontext *context,
1483 struct ib_udata *udata);
1484 int (*dealloc_pd)(struct ib_pd *pd);
1485 struct ib_ah * (*create_ah)(struct ib_pd *pd,
1486 struct ib_ah_attr *ah_attr);
1487 int (*modify_ah)(struct ib_ah *ah,
1488 struct ib_ah_attr *ah_attr);
1489 int (*query_ah)(struct ib_ah *ah,
1490 struct ib_ah_attr *ah_attr);
1491 int (*destroy_ah)(struct ib_ah *ah);
1492 struct ib_srq * (*create_srq)(struct ib_pd *pd,
1493 struct ib_srq_init_attr *srq_init_attr,
1494 struct ib_udata *udata);
1495 int (*modify_srq)(struct ib_srq *srq,
1496 struct ib_srq_attr *srq_attr,
1497 enum ib_srq_attr_mask srq_attr_mask,
1498 struct ib_udata *udata);
1499 int (*query_srq)(struct ib_srq *srq,
1500 struct ib_srq_attr *srq_attr);
1501 int (*destroy_srq)(struct ib_srq *srq);
1502 int (*post_srq_recv)(struct ib_srq *srq,
1503 struct ib_recv_wr *recv_wr,
1504 struct ib_recv_wr **bad_recv_wr);
1505 struct ib_qp * (*create_qp)(struct ib_pd *pd,
1506 struct ib_qp_init_attr *qp_init_attr,
1507 struct ib_udata *udata);
1508 int (*modify_qp)(struct ib_qp *qp,
1509 struct ib_qp_attr *qp_attr,
1511 struct ib_udata *udata);
1512 int (*query_qp)(struct ib_qp *qp,
1513 struct ib_qp_attr *qp_attr,
1515 struct ib_qp_init_attr *qp_init_attr);
1516 int (*destroy_qp)(struct ib_qp *qp);
1517 int (*post_send)(struct ib_qp *qp,
1518 struct ib_send_wr *send_wr,
1519 struct ib_send_wr **bad_send_wr);
1520 int (*post_recv)(struct ib_qp *qp,
1521 struct ib_recv_wr *recv_wr,
1522 struct ib_recv_wr **bad_recv_wr);
1523 struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
1525 struct ib_ucontext *context,
1526 struct ib_udata *udata);
1527 int (*modify_cq)(struct ib_cq *cq, u16 cq_count,
1529 int (*destroy_cq)(struct ib_cq *cq);
1530 int (*resize_cq)(struct ib_cq *cq, int cqe,
1531 struct ib_udata *udata);
1532 int (*poll_cq)(struct ib_cq *cq, int num_entries,
1534 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
1535 int (*req_notify_cq)(struct ib_cq *cq,
1536 enum ib_cq_notify_flags flags);
1537 int (*req_ncomp_notif)(struct ib_cq *cq,
1539 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
1540 int mr_access_flags);
1541 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
1542 struct ib_phys_buf *phys_buf_array,
1544 int mr_access_flags,
1546 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
1547 u64 start, u64 length,
1549 int mr_access_flags,
1550 struct ib_udata *udata);
1551 int (*rereg_user_mr)(struct ib_mr *mr,
1553 u64 start, u64 length,
1555 int mr_access_flags,
1557 struct ib_udata *udata);
1558 int (*query_mr)(struct ib_mr *mr,
1559 struct ib_mr_attr *mr_attr);
1560 int (*dereg_mr)(struct ib_mr *mr);
1561 int (*destroy_mr)(struct ib_mr *mr);
1562 struct ib_mr * (*create_mr)(struct ib_pd *pd,
1563 struct ib_mr_init_attr *mr_init_attr);
1564 struct ib_mr * (*alloc_fast_reg_mr)(struct ib_pd *pd,
1565 int max_page_list_len);
1566 struct ib_fast_reg_page_list * (*alloc_fast_reg_page_list)(struct ib_device *device,
1568 void (*free_fast_reg_page_list)(struct ib_fast_reg_page_list *page_list);
1569 int (*rereg_phys_mr)(struct ib_mr *mr,
1572 struct ib_phys_buf *phys_buf_array,
1574 int mr_access_flags,
1576 struct ib_mw * (*alloc_mw)(struct ib_pd *pd,
1577 enum ib_mw_type type);
1578 int (*bind_mw)(struct ib_qp *qp,
1580 struct ib_mw_bind *mw_bind);
1581 int (*dealloc_mw)(struct ib_mw *mw);
1582 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
1583 int mr_access_flags,
1584 struct ib_fmr_attr *fmr_attr);
1585 int (*map_phys_fmr)(struct ib_fmr *fmr,
1586 u64 *page_list, int list_len,
1588 int (*unmap_fmr)(struct list_head *fmr_list);
1589 int (*dealloc_fmr)(struct ib_fmr *fmr);
1590 int (*attach_mcast)(struct ib_qp *qp,
1593 int (*detach_mcast)(struct ib_qp *qp,
1596 int (*process_mad)(struct ib_device *device,
1597 int process_mad_flags,
1599 struct ib_wc *in_wc,
1600 struct ib_grh *in_grh,
1601 struct ib_mad *in_mad,
1602 struct ib_mad *out_mad);
1603 struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device,
1604 struct ib_ucontext *ucontext,
1605 struct ib_udata *udata);
1606 int (*dealloc_xrcd)(struct ib_xrcd *xrcd);
1607 struct ib_flow * (*create_flow)(struct ib_qp *qp,
1611 int (*destroy_flow)(struct ib_flow *flow_id);
1612 int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
1613 struct ib_mr_status *mr_status);
1615 struct ib_dma_mapping_ops *dma_ops;
1617 struct module *owner;
1619 struct kobject *ports_parent;
1620 struct list_head port_list;
1623 IB_DEV_UNINITIALIZED,
1629 u64 uverbs_cmd_mask;
1630 u64 uverbs_ex_cmd_mask;
1641 void (*add) (struct ib_device *);
1642 void (*remove)(struct ib_device *);
1644 struct list_head list;
1647 struct ib_device *ib_alloc_device(size_t size);
1648 void ib_dealloc_device(struct ib_device *device);
1650 int ib_register_device(struct ib_device *device,
1651 int (*port_callback)(struct ib_device *,
1652 u8, struct kobject *));
1653 void ib_unregister_device(struct ib_device *device);
1655 int ib_register_client (struct ib_client *client);
1656 void ib_unregister_client(struct ib_client *client);
1658 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
1659 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
1662 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
1664 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
1667 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
1669 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
1673 * ib_modify_qp_is_ok - Check that the supplied attribute mask
1674 * contains all required attributes and no attributes not allowed for
1675 * the given QP state transition.
1676 * @cur_state: Current QP state
1677 * @next_state: Next QP state
1679 * @mask: Mask of supplied QP attributes
1680 * @ll : link layer of port
1682 * This function is a helper function that a low-level driver's
1683 * modify_qp method can use to validate the consumer's input. It
1684 * checks that cur_state and next_state are valid QP states, that a
1685 * transition from cur_state to next_state is allowed by the IB spec,
1686 * and that the attribute mask supplied is allowed for the transition.
1688 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
1689 enum ib_qp_type type, enum ib_qp_attr_mask mask,
1690 enum rdma_link_layer ll);
1692 int ib_register_event_handler (struct ib_event_handler *event_handler);
1693 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
1694 void ib_dispatch_event(struct ib_event *event);
1696 int ib_query_device(struct ib_device *device,
1697 struct ib_device_attr *device_attr);
1699 int ib_query_port(struct ib_device *device,
1700 u8 port_num, struct ib_port_attr *port_attr);
1702 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
1705 int ib_query_gid(struct ib_device *device,
1706 u8 port_num, int index, union ib_gid *gid);
1708 int ib_query_pkey(struct ib_device *device,
1709 u8 port_num, u16 index, u16 *pkey);
1711 int ib_modify_device(struct ib_device *device,
1712 int device_modify_mask,
1713 struct ib_device_modify *device_modify);
1715 int ib_modify_port(struct ib_device *device,
1716 u8 port_num, int port_modify_mask,
1717 struct ib_port_modify *port_modify);
1719 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
1720 u8 *port_num, u16 *index);
1722 int ib_find_pkey(struct ib_device *device,
1723 u8 port_num, u16 pkey, u16 *index);
1726 * ib_alloc_pd - Allocates an unused protection domain.
1727 * @device: The device on which to allocate the protection domain.
1729 * A protection domain object provides an association between QPs, shared
1730 * receive queues, address handles, memory regions, and memory windows.
1732 struct ib_pd *ib_alloc_pd(struct ib_device *device);
1735 * ib_dealloc_pd - Deallocates a protection domain.
1736 * @pd: The protection domain to deallocate.
1738 int ib_dealloc_pd(struct ib_pd *pd);
1741 * ib_create_ah - Creates an address handle for the given address vector.
1742 * @pd: The protection domain associated with the address handle.
1743 * @ah_attr: The attributes of the address vector.
1745 * The address handle is used to reference a local or global destination
1746 * in all UD QP post sends.
1748 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
1751 * ib_init_ah_from_wc - Initializes address handle attributes from a
1753 * @device: Device on which the received message arrived.
1754 * @port_num: Port on which the received message arrived.
1755 * @wc: Work completion associated with the received message.
1756 * @grh: References the received global route header. This parameter is
1757 * ignored unless the work completion indicates that the GRH is valid.
1758 * @ah_attr: Returned attributes that can be used when creating an address
1759 * handle for replying to the message.
1761 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
1762 struct ib_grh *grh, struct ib_ah_attr *ah_attr);
1765 * ib_create_ah_from_wc - Creates an address handle associated with the
1766 * sender of the specified work completion.
1767 * @pd: The protection domain associated with the address handle.
1768 * @wc: Work completion information associated with a received message.
1769 * @grh: References the received global route header. This parameter is
1770 * ignored unless the work completion indicates that the GRH is valid.
1771 * @port_num: The outbound port number to associate with the address.
1773 * The address handle is used to reference a local or global destination
1774 * in all UD QP post sends.
1776 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
1777 struct ib_grh *grh, u8 port_num);
1780 * ib_modify_ah - Modifies the address vector associated with an address
1782 * @ah: The address handle to modify.
1783 * @ah_attr: The new address vector attributes to associate with the
1786 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1789 * ib_query_ah - Queries the address vector associated with an address
1791 * @ah: The address handle to query.
1792 * @ah_attr: The address vector attributes associated with the address
1795 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1798 * ib_destroy_ah - Destroys an address handle.
1799 * @ah: The address handle to destroy.
1801 int ib_destroy_ah(struct ib_ah *ah);
1804 * ib_create_srq - Creates a SRQ associated with the specified protection
1806 * @pd: The protection domain associated with the SRQ.
1807 * @srq_init_attr: A list of initial attributes required to create the
1808 * SRQ. If SRQ creation succeeds, then the attributes are updated to
1809 * the actual capabilities of the created SRQ.
1811 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
1812 * requested size of the SRQ, and set to the actual values allocated
1813 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
1814 * will always be at least as large as the requested values.
1816 struct ib_srq *ib_create_srq(struct ib_pd *pd,
1817 struct ib_srq_init_attr *srq_init_attr);
1820 * ib_modify_srq - Modifies the attributes for the specified SRQ.
1821 * @srq: The SRQ to modify.
1822 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
1823 * the current values of selected SRQ attributes are returned.
1824 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
1825 * are being modified.
1827 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
1828 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
1829 * the number of receives queued drops below the limit.
1831 int ib_modify_srq(struct ib_srq *srq,
1832 struct ib_srq_attr *srq_attr,
1833 enum ib_srq_attr_mask srq_attr_mask);
1836 * ib_query_srq - Returns the attribute list and current values for the
1838 * @srq: The SRQ to query.
1839 * @srq_attr: The attributes of the specified SRQ.
1841 int ib_query_srq(struct ib_srq *srq,
1842 struct ib_srq_attr *srq_attr);
1845 * ib_destroy_srq - Destroys the specified SRQ.
1846 * @srq: The SRQ to destroy.
1848 int ib_destroy_srq(struct ib_srq *srq);
1851 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
1852 * @srq: The SRQ to post the work request on.
1853 * @recv_wr: A list of work requests to post on the receive queue.
1854 * @bad_recv_wr: On an immediate failure, this parameter will reference
1855 * the work request that failed to be posted on the QP.
1857 static inline int ib_post_srq_recv(struct ib_srq *srq,
1858 struct ib_recv_wr *recv_wr,
1859 struct ib_recv_wr **bad_recv_wr)
1861 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
1865 * ib_create_qp - Creates a QP associated with the specified protection
1867 * @pd: The protection domain associated with the QP.
1868 * @qp_init_attr: A list of initial attributes required to create the
1869 * QP. If QP creation succeeds, then the attributes are updated to
1870 * the actual capabilities of the created QP.
1872 struct ib_qp *ib_create_qp(struct ib_pd *pd,
1873 struct ib_qp_init_attr *qp_init_attr);
1876 * ib_modify_qp - Modifies the attributes for the specified QP and then
1877 * transitions the QP to the given state.
1878 * @qp: The QP to modify.
1879 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1880 * the current values of selected QP attributes are returned.
1881 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1882 * are being modified.
1884 int ib_modify_qp(struct ib_qp *qp,
1885 struct ib_qp_attr *qp_attr,
1889 * ib_query_qp - Returns the attribute list and current values for the
1891 * @qp: The QP to query.
1892 * @qp_attr: The attributes of the specified QP.
1893 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1894 * @qp_init_attr: Additional attributes of the selected QP.
1896 * The qp_attr_mask may be used to limit the query to gathering only the
1897 * selected attributes.
1899 int ib_query_qp(struct ib_qp *qp,
1900 struct ib_qp_attr *qp_attr,
1902 struct ib_qp_init_attr *qp_init_attr);
1905 * ib_destroy_qp - Destroys the specified QP.
1906 * @qp: The QP to destroy.
1908 int ib_destroy_qp(struct ib_qp *qp);
1911 * ib_open_qp - Obtain a reference to an existing sharable QP.
1912 * @xrcd - XRC domain
1913 * @qp_open_attr: Attributes identifying the QP to open.
1915 * Returns a reference to a sharable QP.
1917 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
1918 struct ib_qp_open_attr *qp_open_attr);
1921 * ib_close_qp - Release an external reference to a QP.
1922 * @qp: The QP handle to release
1924 * The opened QP handle is released by the caller. The underlying
1925 * shared QP is not destroyed until all internal references are released.
1927 int ib_close_qp(struct ib_qp *qp);
1930 * ib_post_send - Posts a list of work requests to the send queue of
1932 * @qp: The QP to post the work request on.
1933 * @send_wr: A list of work requests to post on the send queue.
1934 * @bad_send_wr: On an immediate failure, this parameter will reference
1935 * the work request that failed to be posted on the QP.
1937 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
1938 * error is returned, the QP state shall not be affected,
1939 * ib_post_send() will return an immediate error after queueing any
1940 * earlier work requests in the list.
1942 static inline int ib_post_send(struct ib_qp *qp,
1943 struct ib_send_wr *send_wr,
1944 struct ib_send_wr **bad_send_wr)
1946 return qp->device->post_send(qp, send_wr, bad_send_wr);
1950 * ib_post_recv - Posts a list of work requests to the receive queue of
1952 * @qp: The QP to post the work request on.
1953 * @recv_wr: A list of work requests to post on the receive queue.
1954 * @bad_recv_wr: On an immediate failure, this parameter will reference
1955 * the work request that failed to be posted on the QP.
1957 static inline int ib_post_recv(struct ib_qp *qp,
1958 struct ib_recv_wr *recv_wr,
1959 struct ib_recv_wr **bad_recv_wr)
1961 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
1965 * ib_create_cq - Creates a CQ on the specified device.
1966 * @device: The device on which to create the CQ.
1967 * @comp_handler: A user-specified callback that is invoked when a
1968 * completion event occurs on the CQ.
1969 * @event_handler: A user-specified callback that is invoked when an
1970 * asynchronous event not associated with a completion occurs on the CQ.
1971 * @cq_context: Context associated with the CQ returned to the user via
1972 * the associated completion and event handlers.
1973 * @cqe: The minimum size of the CQ.
1974 * @comp_vector - Completion vector used to signal completion events.
1975 * Must be >= 0 and < context->num_comp_vectors.
1977 * Users can examine the cq structure to determine the actual CQ size.
1979 struct ib_cq *ib_create_cq(struct ib_device *device,
1980 ib_comp_handler comp_handler,
1981 void (*event_handler)(struct ib_event *, void *),
1982 void *cq_context, int cqe, int comp_vector);
1985 * ib_resize_cq - Modifies the capacity of the CQ.
1986 * @cq: The CQ to resize.
1987 * @cqe: The minimum size of the CQ.
1989 * Users can examine the cq structure to determine the actual CQ size.
1991 int ib_resize_cq(struct ib_cq *cq, int cqe);
1994 * ib_modify_cq - Modifies moderation params of the CQ
1995 * @cq: The CQ to modify.
1996 * @cq_count: number of CQEs that will trigger an event
1997 * @cq_period: max period of time in usec before triggering an event
2000 int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
2003 * ib_destroy_cq - Destroys the specified CQ.
2004 * @cq: The CQ to destroy.
2006 int ib_destroy_cq(struct ib_cq *cq);
2009 * ib_poll_cq - poll a CQ for completion(s)
2010 * @cq:the CQ being polled
2011 * @num_entries:maximum number of completions to return
2012 * @wc:array of at least @num_entries &struct ib_wc where completions
2015 * Poll a CQ for (possibly multiple) completions. If the return value
2016 * is < 0, an error occurred. If the return value is >= 0, it is the
2017 * number of completions returned. If the return value is
2018 * non-negative and < num_entries, then the CQ was emptied.
2020 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
2023 return cq->device->poll_cq(cq, num_entries, wc);
2027 * ib_peek_cq - Returns the number of unreaped completions currently
2028 * on the specified CQ.
2029 * @cq: The CQ to peek.
2030 * @wc_cnt: A minimum number of unreaped completions to check for.
2032 * If the number of unreaped completions is greater than or equal to wc_cnt,
2033 * this function returns wc_cnt, otherwise, it returns the actual number of
2034 * unreaped completions.
2036 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
2039 * ib_req_notify_cq - Request completion notification on a CQ.
2040 * @cq: The CQ to generate an event for.
2042 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
2043 * to request an event on the next solicited event or next work
2044 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
2045 * may also be |ed in to request a hint about missed events, as
2049 * < 0 means an error occurred while requesting notification
2050 * == 0 means notification was requested successfully, and if
2051 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
2052 * were missed and it is safe to wait for another event. In
2053 * this case is it guaranteed that any work completions added
2054 * to the CQ since the last CQ poll will trigger a completion
2055 * notification event.
2056 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
2057 * in. It means that the consumer must poll the CQ again to
2058 * make sure it is empty to avoid missing an event because of a
2059 * race between requesting notification and an entry being
2060 * added to the CQ. This return value means it is possible
2061 * (but not guaranteed) that a work completion has been added
2062 * to the CQ since the last poll without triggering a
2063 * completion notification event.
2065 static inline int ib_req_notify_cq(struct ib_cq *cq,
2066 enum ib_cq_notify_flags flags)
2068 return cq->device->req_notify_cq(cq, flags);
2072 * ib_req_ncomp_notif - Request completion notification when there are
2073 * at least the specified number of unreaped completions on the CQ.
2074 * @cq: The CQ to generate an event for.
2075 * @wc_cnt: The number of unreaped completions that should be on the
2076 * CQ before an event is generated.
2078 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
2080 return cq->device->req_ncomp_notif ?
2081 cq->device->req_ncomp_notif(cq, wc_cnt) :
2086 * ib_get_dma_mr - Returns a memory region for system memory that is
2088 * @pd: The protection domain associated with the memory region.
2089 * @mr_access_flags: Specifies the memory access rights.
2091 * Note that the ib_dma_*() functions defined below must be used
2092 * to create/destroy addresses used with the Lkey or Rkey returned
2093 * by ib_get_dma_mr().
2095 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
2098 * ib_dma_mapping_error - check a DMA addr for error
2099 * @dev: The device for which the dma_addr was created
2100 * @dma_addr: The DMA address to check
2102 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
2105 return dev->dma_ops->mapping_error(dev, dma_addr);
2106 return dma_mapping_error(dev->dma_device, dma_addr);
2110 * ib_dma_map_single - Map a kernel virtual address to DMA address
2111 * @dev: The device for which the dma_addr is to be created
2112 * @cpu_addr: The kernel virtual address
2113 * @size: The size of the region in bytes
2114 * @direction: The direction of the DMA
2116 static inline u64 ib_dma_map_single(struct ib_device *dev,
2117 void *cpu_addr, size_t size,
2118 enum dma_data_direction direction)
2121 return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
2122 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
2126 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
2127 * @dev: The device for which the DMA address was created
2128 * @addr: The DMA address
2129 * @size: The size of the region in bytes
2130 * @direction: The direction of the DMA
2132 static inline void ib_dma_unmap_single(struct ib_device *dev,
2133 u64 addr, size_t size,
2134 enum dma_data_direction direction)
2137 dev->dma_ops->unmap_single(dev, addr, size, direction);
2139 dma_unmap_single(dev->dma_device, addr, size, direction);
2142 static inline u64 ib_dma_map_single_attrs(struct ib_device *dev,
2143 void *cpu_addr, size_t size,
2144 enum dma_data_direction direction,
2145 struct dma_attrs *attrs)
2147 return dma_map_single_attrs(dev->dma_device, cpu_addr, size,
2151 static inline void ib_dma_unmap_single_attrs(struct ib_device *dev,
2152 u64 addr, size_t size,
2153 enum dma_data_direction direction,
2154 struct dma_attrs *attrs)
2156 return dma_unmap_single_attrs(dev->dma_device, addr, size,
2161 * ib_dma_map_page - Map a physical page to DMA address
2162 * @dev: The device for which the dma_addr is to be created
2163 * @page: The page to be mapped
2164 * @offset: The offset within the page
2165 * @size: The size of the region in bytes
2166 * @direction: The direction of the DMA
2168 static inline u64 ib_dma_map_page(struct ib_device *dev,
2170 unsigned long offset,
2172 enum dma_data_direction direction)
2175 return dev->dma_ops->map_page(dev, page, offset, size, direction);
2176 return dma_map_page(dev->dma_device, page, offset, size, direction);
2180 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
2181 * @dev: The device for which the DMA address was created
2182 * @addr: The DMA address
2183 * @size: The size of the region in bytes
2184 * @direction: The direction of the DMA
2186 static inline void ib_dma_unmap_page(struct ib_device *dev,
2187 u64 addr, size_t size,
2188 enum dma_data_direction direction)
2191 dev->dma_ops->unmap_page(dev, addr, size, direction);
2193 dma_unmap_page(dev->dma_device, addr, size, direction);
2197 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
2198 * @dev: The device for which the DMA addresses are to be created
2199 * @sg: The array of scatter/gather entries
2200 * @nents: The number of scatter/gather entries
2201 * @direction: The direction of the DMA
2203 static inline int ib_dma_map_sg(struct ib_device *dev,
2204 struct scatterlist *sg, int nents,
2205 enum dma_data_direction direction)
2208 return dev->dma_ops->map_sg(dev, sg, nents, direction);
2209 return dma_map_sg(dev->dma_device, sg, nents, direction);
2213 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
2214 * @dev: The device for which the DMA addresses were created
2215 * @sg: The array of scatter/gather entries
2216 * @nents: The number of scatter/gather entries
2217 * @direction: The direction of the DMA
2219 static inline void ib_dma_unmap_sg(struct ib_device *dev,
2220 struct scatterlist *sg, int nents,
2221 enum dma_data_direction direction)
2224 dev->dma_ops->unmap_sg(dev, sg, nents, direction);
2226 dma_unmap_sg(dev->dma_device, sg, nents, direction);
2229 static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
2230 struct scatterlist *sg, int nents,
2231 enum dma_data_direction direction,
2232 struct dma_attrs *attrs)
2234 return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, attrs);
2237 static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
2238 struct scatterlist *sg, int nents,
2239 enum dma_data_direction direction,
2240 struct dma_attrs *attrs)
2242 dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, attrs);
2245 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
2246 * @dev: The device for which the DMA addresses were created
2247 * @sg: The scatter/gather entry
2249 * Note: this function is obsolete. To do: change all occurrences of
2250 * ib_sg_dma_address() into sg_dma_address().
2252 static inline u64 ib_sg_dma_address(struct ib_device *dev,
2253 struct scatterlist *sg)
2255 return sg_dma_address(sg);
2259 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
2260 * @dev: The device for which the DMA addresses were created
2261 * @sg: The scatter/gather entry
2263 * Note: this function is obsolete. To do: change all occurrences of
2264 * ib_sg_dma_len() into sg_dma_len().
2266 static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
2267 struct scatterlist *sg)
2269 return sg_dma_len(sg);
2273 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
2274 * @dev: The device for which the DMA address was created
2275 * @addr: The DMA address
2276 * @size: The size of the region in bytes
2277 * @dir: The direction of the DMA
2279 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
2282 enum dma_data_direction dir)
2285 dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
2287 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
2291 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
2292 * @dev: The device for which the DMA address was created
2293 * @addr: The DMA address
2294 * @size: The size of the region in bytes
2295 * @dir: The direction of the DMA
2297 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
2300 enum dma_data_direction dir)
2303 dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
2305 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
2309 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
2310 * @dev: The device for which the DMA address is requested
2311 * @size: The size of the region to allocate in bytes
2312 * @dma_handle: A pointer for returning the DMA address of the region
2313 * @flag: memory allocator flags
2315 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
2321 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
2326 ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
2327 *dma_handle = handle;
2333 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
2334 * @dev: The device for which the DMA addresses were allocated
2335 * @size: The size of the region
2336 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
2337 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
2339 static inline void ib_dma_free_coherent(struct ib_device *dev,
2340 size_t size, void *cpu_addr,
2344 dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
2346 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
2350 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
2352 * @pd: The protection domain associated assigned to the registered region.
2353 * @phys_buf_array: Specifies a list of physical buffers to use in the
2355 * @num_phys_buf: Specifies the size of the phys_buf_array.
2356 * @mr_access_flags: Specifies the memory access rights.
2357 * @iova_start: The offset of the region's starting I/O virtual address.
2359 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
2360 struct ib_phys_buf *phys_buf_array,
2362 int mr_access_flags,
2366 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
2367 * Conceptually, this call performs the functions deregister memory region
2368 * followed by register physical memory region. Where possible,
2369 * resources are reused instead of deallocated and reallocated.
2370 * @mr: The memory region to modify.
2371 * @mr_rereg_mask: A bit-mask used to indicate which of the following
2372 * properties of the memory region are being modified.
2373 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
2374 * the new protection domain to associated with the memory region,
2375 * otherwise, this parameter is ignored.
2376 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
2377 * field specifies a list of physical buffers to use in the new
2378 * translation, otherwise, this parameter is ignored.
2379 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
2380 * field specifies the size of the phys_buf_array, otherwise, this
2381 * parameter is ignored.
2382 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
2383 * field specifies the new memory access rights, otherwise, this
2384 * parameter is ignored.
2385 * @iova_start: The offset of the region's starting I/O virtual address.
2387 int ib_rereg_phys_mr(struct ib_mr *mr,
2390 struct ib_phys_buf *phys_buf_array,
2392 int mr_access_flags,
2396 * ib_query_mr - Retrieves information about a specific memory region.
2397 * @mr: The memory region to retrieve information about.
2398 * @mr_attr: The attributes of the specified memory region.
2400 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
2403 * ib_dereg_mr - Deregisters a memory region and removes it from the
2404 * HCA translation table.
2405 * @mr: The memory region to deregister.
2407 * This function can fail, if the memory region has memory windows bound to it.
2409 int ib_dereg_mr(struct ib_mr *mr);
2413 * ib_create_mr - Allocates a memory region that may be used for
2414 * signature handover operations.
2415 * @pd: The protection domain associated with the region.
2416 * @mr_init_attr: memory region init attributes.
2418 struct ib_mr *ib_create_mr(struct ib_pd *pd,
2419 struct ib_mr_init_attr *mr_init_attr);
2422 * ib_destroy_mr - Destroys a memory region that was created using
2423 * ib_create_mr and removes it from HW translation tables.
2424 * @mr: The memory region to destroy.
2426 * This function can fail, if the memory region has memory windows bound to it.
2428 int ib_destroy_mr(struct ib_mr *mr);
2431 * ib_alloc_fast_reg_mr - Allocates memory region usable with the
2432 * IB_WR_FAST_REG_MR send work request.
2433 * @pd: The protection domain associated with the region.
2434 * @max_page_list_len: requested max physical buffer list length to be
2435 * used with fast register work requests for this MR.
2437 struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len);
2440 * ib_alloc_fast_reg_page_list - Allocates a page list array
2441 * @device - ib device pointer.
2442 * @page_list_len - size of the page list array to be allocated.
2444 * This allocates and returns a struct ib_fast_reg_page_list * and a
2445 * page_list array that is at least page_list_len in size. The actual
2446 * size is returned in max_page_list_len. The caller is responsible
2447 * for initializing the contents of the page_list array before posting
2448 * a send work request with the IB_WC_FAST_REG_MR opcode.
2450 * The page_list array entries must be translated using one of the
2451 * ib_dma_*() functions just like the addresses passed to
2452 * ib_map_phys_fmr(). Once the ib_post_send() is issued, the struct
2453 * ib_fast_reg_page_list must not be modified by the caller until the
2454 * IB_WC_FAST_REG_MR work request completes.
2456 struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(
2457 struct ib_device *device, int page_list_len);
2460 * ib_free_fast_reg_page_list - Deallocates a previously allocated
2462 * @page_list - struct ib_fast_reg_page_list pointer to be deallocated.
2464 void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
2467 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
2469 * @mr - struct ib_mr pointer to be updated.
2470 * @newkey - new key to be used.
2472 static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey)
2474 mr->lkey = (mr->lkey & 0xffffff00) | newkey;
2475 mr->rkey = (mr->rkey & 0xffffff00) | newkey;
2479 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
2480 * for calculating a new rkey for type 2 memory windows.
2481 * @rkey - the rkey to increment.
2483 static inline u32 ib_inc_rkey(u32 rkey)
2485 const u32 mask = 0x000000ff;
2486 return ((rkey + 1) & mask) | (rkey & ~mask);
2490 * ib_alloc_mw - Allocates a memory window.
2491 * @pd: The protection domain associated with the memory window.
2492 * @type: The type of the memory window (1 or 2).
2494 struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type);
2497 * ib_bind_mw - Posts a work request to the send queue of the specified
2498 * QP, which binds the memory window to the given address range and
2499 * remote access attributes.
2500 * @qp: QP to post the bind work request on.
2501 * @mw: The memory window to bind.
2502 * @mw_bind: Specifies information about the memory window, including
2503 * its address range, remote access rights, and associated memory region.
2505 * If there is no immediate error, the function will update the rkey member
2506 * of the mw parameter to its new value. The bind operation can still fail
2509 static inline int ib_bind_mw(struct ib_qp *qp,
2511 struct ib_mw_bind *mw_bind)
2513 /* XXX reference counting in corresponding MR? */
2514 return mw->device->bind_mw ?
2515 mw->device->bind_mw(qp, mw, mw_bind) :
2520 * ib_dealloc_mw - Deallocates a memory window.
2521 * @mw: The memory window to deallocate.
2523 int ib_dealloc_mw(struct ib_mw *mw);
2526 * ib_alloc_fmr - Allocates a unmapped fast memory region.
2527 * @pd: The protection domain associated with the unmapped region.
2528 * @mr_access_flags: Specifies the memory access rights.
2529 * @fmr_attr: Attributes of the unmapped region.
2531 * A fast memory region must be mapped before it can be used as part of
2534 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
2535 int mr_access_flags,
2536 struct ib_fmr_attr *fmr_attr);
2539 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
2540 * @fmr: The fast memory region to associate with the pages.
2541 * @page_list: An array of physical pages to map to the fast memory region.
2542 * @list_len: The number of pages in page_list.
2543 * @iova: The I/O virtual address to use with the mapped region.
2545 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
2546 u64 *page_list, int list_len,
2549 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
2553 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
2554 * @fmr_list: A linked list of fast memory regions to unmap.
2556 int ib_unmap_fmr(struct list_head *fmr_list);
2559 * ib_dealloc_fmr - Deallocates a fast memory region.
2560 * @fmr: The fast memory region to deallocate.
2562 int ib_dealloc_fmr(struct ib_fmr *fmr);
2565 * ib_attach_mcast - Attaches the specified QP to a multicast group.
2566 * @qp: QP to attach to the multicast group. The QP must be type
2568 * @gid: Multicast group GID.
2569 * @lid: Multicast group LID in host byte order.
2571 * In order to send and receive multicast packets, subnet
2572 * administration must have created the multicast group and configured
2573 * the fabric appropriately. The port associated with the specified
2574 * QP must also be a member of the multicast group.
2576 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
2579 * ib_detach_mcast - Detaches the specified QP from a multicast group.
2580 * @qp: QP to detach from the multicast group.
2581 * @gid: Multicast group GID.
2582 * @lid: Multicast group LID in host byte order.
2584 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
2587 * ib_alloc_xrcd - Allocates an XRC domain.
2588 * @device: The device on which to allocate the XRC domain.
2590 struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device);
2593 * ib_dealloc_xrcd - Deallocates an XRC domain.
2594 * @xrcd: The XRC domain to deallocate.
2596 int ib_dealloc_xrcd(struct ib_xrcd *xrcd);
2598 struct ib_flow *ib_create_flow(struct ib_qp *qp,
2599 struct ib_flow_attr *flow_attr, int domain);
2600 int ib_destroy_flow(struct ib_flow *flow_id);
2602 static inline int ib_check_mr_access(int flags)
2605 * Local write permission is required if remote write or
2606 * remote atomic permission is also requested.
2608 if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
2609 !(flags & IB_ACCESS_LOCAL_WRITE))
2616 * ib_check_mr_status: lightweight check of MR status.
2617 * This routine may provide status checks on a selected
2618 * ib_mr. first use is for signature status check.
2620 * @mr: A memory region.
2621 * @check_mask: Bitmask of which checks to perform from
2622 * ib_mr_status_check enumeration.
2623 * @mr_status: The container of relevant status checks.
2624 * failed checks will be indicated in the status bitmask
2625 * and the relevant info shall be in the error item.
2627 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
2628 struct ib_mr_status *mr_status);
2630 #endif /* IB_VERBS_H */