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
38 * $Id: ib_verbs.h 1349 2004-12-16 21:09:43Z roland $
41 #if !defined(IB_VERBS_H)
44 #include <linux/types.h>
45 #include <linux/device.h>
47 #include <linux/dma-mapping.h>
48 #include <linux/kref.h>
49 #include <linux/list.h>
50 #include <linux/rwsem.h>
51 #include <linux/scatterlist.h>
53 #include <asm/atomic.h>
54 #include <asm/uaccess.h>
65 /* IB values map to NodeInfo:NodeType. */
72 enum rdma_transport_type {
77 enum rdma_transport_type
78 rdma_node_get_transport(enum rdma_node_type node_type) __attribute_const__;
80 enum ib_device_cap_flags {
81 IB_DEVICE_RESIZE_MAX_WR = 1,
82 IB_DEVICE_BAD_PKEY_CNTR = (1<<1),
83 IB_DEVICE_BAD_QKEY_CNTR = (1<<2),
84 IB_DEVICE_RAW_MULTI = (1<<3),
85 IB_DEVICE_AUTO_PATH_MIG = (1<<4),
86 IB_DEVICE_CHANGE_PHY_PORT = (1<<5),
87 IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6),
88 IB_DEVICE_CURR_QP_STATE_MOD = (1<<7),
89 IB_DEVICE_SHUTDOWN_PORT = (1<<8),
90 IB_DEVICE_INIT_TYPE = (1<<9),
91 IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10),
92 IB_DEVICE_SYS_IMAGE_GUID = (1<<11),
93 IB_DEVICE_RC_RNR_NAK_GEN = (1<<12),
94 IB_DEVICE_SRQ_RESIZE = (1<<13),
95 IB_DEVICE_N_NOTIFY_CQ = (1<<14),
96 IB_DEVICE_ZERO_STAG = (1<<15),
97 IB_DEVICE_SEND_W_INV = (1<<16),
98 IB_DEVICE_MEM_WINDOW = (1<<17),
100 * Devices should set IB_DEVICE_UD_IP_SUM if they support
101 * insertion of UDP and TCP checksum on outgoing UD IPoIB
102 * messages and can verify the validity of checksum for
103 * incoming messages. Setting this flag implies that the
104 * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
106 IB_DEVICE_UD_IP_CSUM = (1<<18),
115 struct ib_device_attr {
117 __be64 sys_image_guid;
125 int device_cap_flags;
135 int max_qp_init_rd_atom;
136 int max_ee_init_rd_atom;
137 enum ib_atomic_cap atomic_cap;
144 int max_mcast_qp_attach;
145 int max_total_mcast_qp_attach;
153 u8 local_ca_ack_delay;
164 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
167 case IB_MTU_256: return 256;
168 case IB_MTU_512: return 512;
169 case IB_MTU_1024: return 1024;
170 case IB_MTU_2048: return 2048;
171 case IB_MTU_4096: return 4096;
182 IB_PORT_ACTIVE_DEFER = 5
185 enum ib_port_cap_flags {
187 IB_PORT_NOTICE_SUP = 1 << 2,
188 IB_PORT_TRAP_SUP = 1 << 3,
189 IB_PORT_OPT_IPD_SUP = 1 << 4,
190 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
191 IB_PORT_SL_MAP_SUP = 1 << 6,
192 IB_PORT_MKEY_NVRAM = 1 << 7,
193 IB_PORT_PKEY_NVRAM = 1 << 8,
194 IB_PORT_LED_INFO_SUP = 1 << 9,
195 IB_PORT_SM_DISABLED = 1 << 10,
196 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
197 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
198 IB_PORT_CM_SUP = 1 << 16,
199 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
200 IB_PORT_REINIT_SUP = 1 << 18,
201 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
202 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
203 IB_PORT_DR_NOTICE_SUP = 1 << 21,
204 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
205 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
206 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
207 IB_PORT_CLIENT_REG_SUP = 1 << 25
217 static inline int ib_width_enum_to_int(enum ib_port_width width)
220 case IB_WIDTH_1X: return 1;
221 case IB_WIDTH_4X: return 4;
222 case IB_WIDTH_8X: return 8;
223 case IB_WIDTH_12X: return 12;
228 struct ib_port_attr {
229 enum ib_port_state state;
231 enum ib_mtu active_mtu;
250 enum ib_device_modify_flags {
251 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
252 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
255 struct ib_device_modify {
260 enum ib_port_modify_flags {
261 IB_PORT_SHUTDOWN = 1,
262 IB_PORT_INIT_TYPE = (1<<2),
263 IB_PORT_RESET_QKEY_CNTR = (1<<3)
266 struct ib_port_modify {
267 u32 set_port_cap_mask;
268 u32 clr_port_cap_mask;
276 IB_EVENT_QP_ACCESS_ERR,
280 IB_EVENT_PATH_MIG_ERR,
281 IB_EVENT_DEVICE_FATAL,
282 IB_EVENT_PORT_ACTIVE,
285 IB_EVENT_PKEY_CHANGE,
288 IB_EVENT_SRQ_LIMIT_REACHED,
289 IB_EVENT_QP_LAST_WQE_REACHED,
290 IB_EVENT_CLIENT_REREGISTER
294 struct ib_device *device;
301 enum ib_event_type event;
304 struct ib_event_handler {
305 struct ib_device *device;
306 void (*handler)(struct ib_event_handler *, struct ib_event *);
307 struct list_head list;
310 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
312 (_ptr)->device = _device; \
313 (_ptr)->handler = _handler; \
314 INIT_LIST_HEAD(&(_ptr)->list); \
317 struct ib_global_route {
326 __be32 version_tclass_flow;
335 IB_MULTICAST_QPN = 0xffffff
338 #define IB_LID_PERMISSIVE __constant_htons(0xFFFF)
345 IB_RATE_PORT_CURRENT = 0,
346 IB_RATE_2_5_GBPS = 2,
354 IB_RATE_120_GBPS = 10
358 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
359 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
360 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
361 * @rate: rate to convert.
363 int ib_rate_to_mult(enum ib_rate rate) __attribute_const__;
366 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
368 * @mult: multiple to convert.
370 enum ib_rate mult_to_ib_rate(int mult) __attribute_const__;
373 struct ib_global_route grh;
386 IB_WC_LOC_EEC_OP_ERR,
391 IB_WC_LOC_ACCESS_ERR,
392 IB_WC_REM_INV_REQ_ERR,
393 IB_WC_REM_ACCESS_ERR,
396 IB_WC_RNR_RETRY_EXC_ERR,
397 IB_WC_LOC_RDD_VIOL_ERR,
398 IB_WC_REM_INV_RD_REQ_ERR,
401 IB_WC_INV_EEC_STATE_ERR,
403 IB_WC_RESP_TIMEOUT_ERR,
415 * Set value of IB_WC_RECV so consumers can test if a completion is a
416 * receive by testing (opcode & IB_WC_RECV).
419 IB_WC_RECV_RDMA_WITH_IMM
424 IB_WC_WITH_IMM = (1<<1)
429 enum ib_wc_status status;
430 enum ib_wc_opcode opcode;
441 u8 port_num; /* valid only for DR SMPs on switches */
445 enum ib_cq_notify_flags {
446 IB_CQ_SOLICITED = 1 << 0,
447 IB_CQ_NEXT_COMP = 1 << 1,
448 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
449 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
452 enum ib_srq_attr_mask {
453 IB_SRQ_MAX_WR = 1 << 0,
454 IB_SRQ_LIMIT = 1 << 1,
463 struct ib_srq_init_attr {
464 void (*event_handler)(struct ib_event *, void *);
466 struct ib_srq_attr attr;
484 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
485 * here (and in that order) since the MAD layer uses them as
486 * indices into a 2-entry table.
498 struct ib_qp_init_attr {
499 void (*event_handler)(struct ib_event *, void *);
501 struct ib_cq *send_cq;
502 struct ib_cq *recv_cq;
504 struct ib_qp_cap cap;
505 enum ib_sig_type sq_sig_type;
506 enum ib_qp_type qp_type;
507 u8 port_num; /* special QP types only */
510 enum ib_rnr_timeout {
511 IB_RNR_TIMER_655_36 = 0,
512 IB_RNR_TIMER_000_01 = 1,
513 IB_RNR_TIMER_000_02 = 2,
514 IB_RNR_TIMER_000_03 = 3,
515 IB_RNR_TIMER_000_04 = 4,
516 IB_RNR_TIMER_000_06 = 5,
517 IB_RNR_TIMER_000_08 = 6,
518 IB_RNR_TIMER_000_12 = 7,
519 IB_RNR_TIMER_000_16 = 8,
520 IB_RNR_TIMER_000_24 = 9,
521 IB_RNR_TIMER_000_32 = 10,
522 IB_RNR_TIMER_000_48 = 11,
523 IB_RNR_TIMER_000_64 = 12,
524 IB_RNR_TIMER_000_96 = 13,
525 IB_RNR_TIMER_001_28 = 14,
526 IB_RNR_TIMER_001_92 = 15,
527 IB_RNR_TIMER_002_56 = 16,
528 IB_RNR_TIMER_003_84 = 17,
529 IB_RNR_TIMER_005_12 = 18,
530 IB_RNR_TIMER_007_68 = 19,
531 IB_RNR_TIMER_010_24 = 20,
532 IB_RNR_TIMER_015_36 = 21,
533 IB_RNR_TIMER_020_48 = 22,
534 IB_RNR_TIMER_030_72 = 23,
535 IB_RNR_TIMER_040_96 = 24,
536 IB_RNR_TIMER_061_44 = 25,
537 IB_RNR_TIMER_081_92 = 26,
538 IB_RNR_TIMER_122_88 = 27,
539 IB_RNR_TIMER_163_84 = 28,
540 IB_RNR_TIMER_245_76 = 29,
541 IB_RNR_TIMER_327_68 = 30,
542 IB_RNR_TIMER_491_52 = 31
545 enum ib_qp_attr_mask {
547 IB_QP_CUR_STATE = (1<<1),
548 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
549 IB_QP_ACCESS_FLAGS = (1<<3),
550 IB_QP_PKEY_INDEX = (1<<4),
554 IB_QP_PATH_MTU = (1<<8),
555 IB_QP_TIMEOUT = (1<<9),
556 IB_QP_RETRY_CNT = (1<<10),
557 IB_QP_RNR_RETRY = (1<<11),
558 IB_QP_RQ_PSN = (1<<12),
559 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
560 IB_QP_ALT_PATH = (1<<14),
561 IB_QP_MIN_RNR_TIMER = (1<<15),
562 IB_QP_SQ_PSN = (1<<16),
563 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
564 IB_QP_PATH_MIG_STATE = (1<<18),
566 IB_QP_DEST_QPN = (1<<20)
586 enum ib_qp_state qp_state;
587 enum ib_qp_state cur_qp_state;
588 enum ib_mtu path_mtu;
589 enum ib_mig_state path_mig_state;
595 struct ib_qp_cap cap;
596 struct ib_ah_attr ah_attr;
597 struct ib_ah_attr alt_ah_attr;
600 u8 en_sqd_async_notify;
603 u8 max_dest_rd_atomic;
615 IB_WR_RDMA_WRITE_WITH_IMM,
619 IB_WR_ATOMIC_CMP_AND_SWP,
620 IB_WR_ATOMIC_FETCH_AND_ADD
625 IB_SEND_SIGNALED = (1<<1),
626 IB_SEND_SOLICITED = (1<<2),
627 IB_SEND_INLINE = (1<<3),
628 IB_SEND_IP_CSUM = (1<<4)
638 struct ib_send_wr *next;
640 struct ib_sge *sg_list;
642 enum ib_wr_opcode opcode;
660 u16 pkey_index; /* valid for GSI only */
661 u8 port_num; /* valid for DR SMPs on switch only */
667 struct ib_recv_wr *next;
669 struct ib_sge *sg_list;
673 enum ib_access_flags {
674 IB_ACCESS_LOCAL_WRITE = 1,
675 IB_ACCESS_REMOTE_WRITE = (1<<1),
676 IB_ACCESS_REMOTE_READ = (1<<2),
677 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
678 IB_ACCESS_MW_BIND = (1<<4)
688 u64 device_virt_addr;
695 enum ib_mr_rereg_flags {
696 IB_MR_REREG_TRANS = 1,
697 IB_MR_REREG_PD = (1<<1),
698 IB_MR_REREG_ACCESS = (1<<2)
717 struct ib_device *device;
718 struct list_head pd_list;
719 struct list_head mr_list;
720 struct list_head mw_list;
721 struct list_head cq_list;
722 struct list_head qp_list;
723 struct list_head srq_list;
724 struct list_head ah_list;
729 u64 user_handle; /* handle given to us by userspace */
730 struct ib_ucontext *context; /* associated user context */
731 void *object; /* containing object */
732 struct list_head list; /* link to context's list */
733 u32 id; /* index into kernel idr */
735 struct rw_semaphore mutex; /* protects .live */
747 struct ib_device *device;
748 struct ib_uobject *uobject;
749 atomic_t usecnt; /* count all resources */
753 struct ib_device *device;
755 struct ib_uobject *uobject;
758 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
761 struct ib_device *device;
762 struct ib_uobject *uobject;
763 ib_comp_handler comp_handler;
764 void (*event_handler)(struct ib_event *, void *);
767 atomic_t usecnt; /* count number of work queues */
771 struct ib_device *device;
773 struct ib_uobject *uobject;
774 void (*event_handler)(struct ib_event *, void *);
780 struct ib_device *device;
782 struct ib_cq *send_cq;
783 struct ib_cq *recv_cq;
785 struct ib_uobject *uobject;
786 void (*event_handler)(struct ib_event *, void *);
789 enum ib_qp_type qp_type;
793 struct ib_device *device;
795 struct ib_uobject *uobject;
798 atomic_t usecnt; /* count number of MWs */
802 struct ib_device *device;
804 struct ib_uobject *uobject;
809 struct ib_device *device;
811 struct list_head list;
819 enum ib_process_mad_flags {
820 IB_MAD_IGNORE_MKEY = 1,
821 IB_MAD_IGNORE_BKEY = 2,
822 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
826 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
827 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
828 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
829 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
832 #define IB_DEVICE_NAME_MAX 64
836 struct ib_event_handler event_handler;
837 struct ib_pkey_cache **pkey_cache;
838 struct ib_gid_cache **gid_cache;
842 struct ib_dma_mapping_ops {
843 int (*mapping_error)(struct ib_device *dev,
845 u64 (*map_single)(struct ib_device *dev,
846 void *ptr, size_t size,
847 enum dma_data_direction direction);
848 void (*unmap_single)(struct ib_device *dev,
849 u64 addr, size_t size,
850 enum dma_data_direction direction);
851 u64 (*map_page)(struct ib_device *dev,
852 struct page *page, unsigned long offset,
854 enum dma_data_direction direction);
855 void (*unmap_page)(struct ib_device *dev,
856 u64 addr, size_t size,
857 enum dma_data_direction direction);
858 int (*map_sg)(struct ib_device *dev,
859 struct scatterlist *sg, int nents,
860 enum dma_data_direction direction);
861 void (*unmap_sg)(struct ib_device *dev,
862 struct scatterlist *sg, int nents,
863 enum dma_data_direction direction);
864 u64 (*dma_address)(struct ib_device *dev,
865 struct scatterlist *sg);
866 unsigned int (*dma_len)(struct ib_device *dev,
867 struct scatterlist *sg);
868 void (*sync_single_for_cpu)(struct ib_device *dev,
871 enum dma_data_direction dir);
872 void (*sync_single_for_device)(struct ib_device *dev,
875 enum dma_data_direction dir);
876 void *(*alloc_coherent)(struct ib_device *dev,
880 void (*free_coherent)(struct ib_device *dev,
881 size_t size, void *cpu_addr,
888 struct device *dma_device;
890 char name[IB_DEVICE_NAME_MAX];
892 struct list_head event_handler_list;
893 spinlock_t event_handler_lock;
895 struct list_head core_list;
896 struct list_head client_data_list;
897 spinlock_t client_data_lock;
899 struct ib_cache cache;
905 int num_comp_vectors;
907 struct iw_cm_verbs *iwcm;
909 int (*query_device)(struct ib_device *device,
910 struct ib_device_attr *device_attr);
911 int (*query_port)(struct ib_device *device,
913 struct ib_port_attr *port_attr);
914 int (*query_gid)(struct ib_device *device,
915 u8 port_num, int index,
917 int (*query_pkey)(struct ib_device *device,
918 u8 port_num, u16 index, u16 *pkey);
919 int (*modify_device)(struct ib_device *device,
920 int device_modify_mask,
921 struct ib_device_modify *device_modify);
922 int (*modify_port)(struct ib_device *device,
923 u8 port_num, int port_modify_mask,
924 struct ib_port_modify *port_modify);
925 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
926 struct ib_udata *udata);
927 int (*dealloc_ucontext)(struct ib_ucontext *context);
928 int (*mmap)(struct ib_ucontext *context,
929 struct vm_area_struct *vma);
930 struct ib_pd * (*alloc_pd)(struct ib_device *device,
931 struct ib_ucontext *context,
932 struct ib_udata *udata);
933 int (*dealloc_pd)(struct ib_pd *pd);
934 struct ib_ah * (*create_ah)(struct ib_pd *pd,
935 struct ib_ah_attr *ah_attr);
936 int (*modify_ah)(struct ib_ah *ah,
937 struct ib_ah_attr *ah_attr);
938 int (*query_ah)(struct ib_ah *ah,
939 struct ib_ah_attr *ah_attr);
940 int (*destroy_ah)(struct ib_ah *ah);
941 struct ib_srq * (*create_srq)(struct ib_pd *pd,
942 struct ib_srq_init_attr *srq_init_attr,
943 struct ib_udata *udata);
944 int (*modify_srq)(struct ib_srq *srq,
945 struct ib_srq_attr *srq_attr,
946 enum ib_srq_attr_mask srq_attr_mask,
947 struct ib_udata *udata);
948 int (*query_srq)(struct ib_srq *srq,
949 struct ib_srq_attr *srq_attr);
950 int (*destroy_srq)(struct ib_srq *srq);
951 int (*post_srq_recv)(struct ib_srq *srq,
952 struct ib_recv_wr *recv_wr,
953 struct ib_recv_wr **bad_recv_wr);
954 struct ib_qp * (*create_qp)(struct ib_pd *pd,
955 struct ib_qp_init_attr *qp_init_attr,
956 struct ib_udata *udata);
957 int (*modify_qp)(struct ib_qp *qp,
958 struct ib_qp_attr *qp_attr,
960 struct ib_udata *udata);
961 int (*query_qp)(struct ib_qp *qp,
962 struct ib_qp_attr *qp_attr,
964 struct ib_qp_init_attr *qp_init_attr);
965 int (*destroy_qp)(struct ib_qp *qp);
966 int (*post_send)(struct ib_qp *qp,
967 struct ib_send_wr *send_wr,
968 struct ib_send_wr **bad_send_wr);
969 int (*post_recv)(struct ib_qp *qp,
970 struct ib_recv_wr *recv_wr,
971 struct ib_recv_wr **bad_recv_wr);
972 struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
974 struct ib_ucontext *context,
975 struct ib_udata *udata);
976 int (*destroy_cq)(struct ib_cq *cq);
977 int (*resize_cq)(struct ib_cq *cq, int cqe,
978 struct ib_udata *udata);
979 int (*poll_cq)(struct ib_cq *cq, int num_entries,
981 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
982 int (*req_notify_cq)(struct ib_cq *cq,
983 enum ib_cq_notify_flags flags);
984 int (*req_ncomp_notif)(struct ib_cq *cq,
986 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
987 int mr_access_flags);
988 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
989 struct ib_phys_buf *phys_buf_array,
993 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
994 u64 start, u64 length,
997 struct ib_udata *udata);
998 int (*query_mr)(struct ib_mr *mr,
999 struct ib_mr_attr *mr_attr);
1000 int (*dereg_mr)(struct ib_mr *mr);
1001 int (*rereg_phys_mr)(struct ib_mr *mr,
1004 struct ib_phys_buf *phys_buf_array,
1006 int mr_access_flags,
1008 struct ib_mw * (*alloc_mw)(struct ib_pd *pd);
1009 int (*bind_mw)(struct ib_qp *qp,
1011 struct ib_mw_bind *mw_bind);
1012 int (*dealloc_mw)(struct ib_mw *mw);
1013 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
1014 int mr_access_flags,
1015 struct ib_fmr_attr *fmr_attr);
1016 int (*map_phys_fmr)(struct ib_fmr *fmr,
1017 u64 *page_list, int list_len,
1019 int (*unmap_fmr)(struct list_head *fmr_list);
1020 int (*dealloc_fmr)(struct ib_fmr *fmr);
1021 int (*attach_mcast)(struct ib_qp *qp,
1024 int (*detach_mcast)(struct ib_qp *qp,
1027 int (*process_mad)(struct ib_device *device,
1028 int process_mad_flags,
1030 struct ib_wc *in_wc,
1031 struct ib_grh *in_grh,
1032 struct ib_mad *in_mad,
1033 struct ib_mad *out_mad);
1035 struct ib_dma_mapping_ops *dma_ops;
1037 struct module *owner;
1038 struct class_device class_dev;
1039 struct kobject *ports_parent;
1040 struct list_head port_list;
1043 IB_DEV_UNINITIALIZED,
1048 u64 uverbs_cmd_mask;
1059 void (*add) (struct ib_device *);
1060 void (*remove)(struct ib_device *);
1062 struct list_head list;
1065 struct ib_device *ib_alloc_device(size_t size);
1066 void ib_dealloc_device(struct ib_device *device);
1068 int ib_register_device (struct ib_device *device);
1069 void ib_unregister_device(struct ib_device *device);
1071 int ib_register_client (struct ib_client *client);
1072 void ib_unregister_client(struct ib_client *client);
1074 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
1075 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
1078 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
1080 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
1083 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
1085 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
1089 * ib_modify_qp_is_ok - Check that the supplied attribute mask
1090 * contains all required attributes and no attributes not allowed for
1091 * the given QP state transition.
1092 * @cur_state: Current QP state
1093 * @next_state: Next QP state
1095 * @mask: Mask of supplied QP attributes
1097 * This function is a helper function that a low-level driver's
1098 * modify_qp method can use to validate the consumer's input. It
1099 * checks that cur_state and next_state are valid QP states, that a
1100 * transition from cur_state to next_state is allowed by the IB spec,
1101 * and that the attribute mask supplied is allowed for the transition.
1103 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
1104 enum ib_qp_type type, enum ib_qp_attr_mask mask);
1106 int ib_register_event_handler (struct ib_event_handler *event_handler);
1107 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
1108 void ib_dispatch_event(struct ib_event *event);
1110 int ib_query_device(struct ib_device *device,
1111 struct ib_device_attr *device_attr);
1113 int ib_query_port(struct ib_device *device,
1114 u8 port_num, struct ib_port_attr *port_attr);
1116 int ib_query_gid(struct ib_device *device,
1117 u8 port_num, int index, union ib_gid *gid);
1119 int ib_query_pkey(struct ib_device *device,
1120 u8 port_num, u16 index, u16 *pkey);
1122 int ib_modify_device(struct ib_device *device,
1123 int device_modify_mask,
1124 struct ib_device_modify *device_modify);
1126 int ib_modify_port(struct ib_device *device,
1127 u8 port_num, int port_modify_mask,
1128 struct ib_port_modify *port_modify);
1130 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
1131 u8 *port_num, u16 *index);
1133 int ib_find_pkey(struct ib_device *device,
1134 u8 port_num, u16 pkey, u16 *index);
1137 * ib_alloc_pd - Allocates an unused protection domain.
1138 * @device: The device on which to allocate the protection domain.
1140 * A protection domain object provides an association between QPs, shared
1141 * receive queues, address handles, memory regions, and memory windows.
1143 struct ib_pd *ib_alloc_pd(struct ib_device *device);
1146 * ib_dealloc_pd - Deallocates a protection domain.
1147 * @pd: The protection domain to deallocate.
1149 int ib_dealloc_pd(struct ib_pd *pd);
1152 * ib_create_ah - Creates an address handle for the given address vector.
1153 * @pd: The protection domain associated with the address handle.
1154 * @ah_attr: The attributes of the address vector.
1156 * The address handle is used to reference a local or global destination
1157 * in all UD QP post sends.
1159 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
1162 * ib_init_ah_from_wc - Initializes address handle attributes from a
1164 * @device: Device on which the received message arrived.
1165 * @port_num: Port on which the received message arrived.
1166 * @wc: Work completion associated with the received message.
1167 * @grh: References the received global route header. This parameter is
1168 * ignored unless the work completion indicates that the GRH is valid.
1169 * @ah_attr: Returned attributes that can be used when creating an address
1170 * handle for replying to the message.
1172 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
1173 struct ib_grh *grh, struct ib_ah_attr *ah_attr);
1176 * ib_create_ah_from_wc - Creates an address handle associated with the
1177 * sender of the specified work completion.
1178 * @pd: The protection domain associated with the address handle.
1179 * @wc: Work completion information associated with a received message.
1180 * @grh: References the received global route header. This parameter is
1181 * ignored unless the work completion indicates that the GRH is valid.
1182 * @port_num: The outbound port number to associate with the address.
1184 * The address handle is used to reference a local or global destination
1185 * in all UD QP post sends.
1187 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
1188 struct ib_grh *grh, u8 port_num);
1191 * ib_modify_ah - Modifies the address vector associated with an address
1193 * @ah: The address handle to modify.
1194 * @ah_attr: The new address vector attributes to associate with the
1197 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1200 * ib_query_ah - Queries the address vector associated with an address
1202 * @ah: The address handle to query.
1203 * @ah_attr: The address vector attributes associated with the address
1206 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1209 * ib_destroy_ah - Destroys an address handle.
1210 * @ah: The address handle to destroy.
1212 int ib_destroy_ah(struct ib_ah *ah);
1215 * ib_create_srq - Creates a SRQ associated with the specified protection
1217 * @pd: The protection domain associated with the SRQ.
1218 * @srq_init_attr: A list of initial attributes required to create the
1219 * SRQ. If SRQ creation succeeds, then the attributes are updated to
1220 * the actual capabilities of the created SRQ.
1222 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
1223 * requested size of the SRQ, and set to the actual values allocated
1224 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
1225 * will always be at least as large as the requested values.
1227 struct ib_srq *ib_create_srq(struct ib_pd *pd,
1228 struct ib_srq_init_attr *srq_init_attr);
1231 * ib_modify_srq - Modifies the attributes for the specified SRQ.
1232 * @srq: The SRQ to modify.
1233 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
1234 * the current values of selected SRQ attributes are returned.
1235 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
1236 * are being modified.
1238 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
1239 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
1240 * the number of receives queued drops below the limit.
1242 int ib_modify_srq(struct ib_srq *srq,
1243 struct ib_srq_attr *srq_attr,
1244 enum ib_srq_attr_mask srq_attr_mask);
1247 * ib_query_srq - Returns the attribute list and current values for the
1249 * @srq: The SRQ to query.
1250 * @srq_attr: The attributes of the specified SRQ.
1252 int ib_query_srq(struct ib_srq *srq,
1253 struct ib_srq_attr *srq_attr);
1256 * ib_destroy_srq - Destroys the specified SRQ.
1257 * @srq: The SRQ to destroy.
1259 int ib_destroy_srq(struct ib_srq *srq);
1262 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
1263 * @srq: The SRQ to post the work request on.
1264 * @recv_wr: A list of work requests to post on the receive queue.
1265 * @bad_recv_wr: On an immediate failure, this parameter will reference
1266 * the work request that failed to be posted on the QP.
1268 static inline int ib_post_srq_recv(struct ib_srq *srq,
1269 struct ib_recv_wr *recv_wr,
1270 struct ib_recv_wr **bad_recv_wr)
1272 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
1276 * ib_create_qp - Creates a QP associated with the specified protection
1278 * @pd: The protection domain associated with the QP.
1279 * @qp_init_attr: A list of initial attributes required to create the
1280 * QP. If QP creation succeeds, then the attributes are updated to
1281 * the actual capabilities of the created QP.
1283 struct ib_qp *ib_create_qp(struct ib_pd *pd,
1284 struct ib_qp_init_attr *qp_init_attr);
1287 * ib_modify_qp - Modifies the attributes for the specified QP and then
1288 * transitions the QP to the given state.
1289 * @qp: The QP to modify.
1290 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1291 * the current values of selected QP attributes are returned.
1292 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1293 * are being modified.
1295 int ib_modify_qp(struct ib_qp *qp,
1296 struct ib_qp_attr *qp_attr,
1300 * ib_query_qp - Returns the attribute list and current values for the
1302 * @qp: The QP to query.
1303 * @qp_attr: The attributes of the specified QP.
1304 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1305 * @qp_init_attr: Additional attributes of the selected QP.
1307 * The qp_attr_mask may be used to limit the query to gathering only the
1308 * selected attributes.
1310 int ib_query_qp(struct ib_qp *qp,
1311 struct ib_qp_attr *qp_attr,
1313 struct ib_qp_init_attr *qp_init_attr);
1316 * ib_destroy_qp - Destroys the specified QP.
1317 * @qp: The QP to destroy.
1319 int ib_destroy_qp(struct ib_qp *qp);
1322 * ib_post_send - Posts a list of work requests to the send queue of
1324 * @qp: The QP to post the work request on.
1325 * @send_wr: A list of work requests to post on the send queue.
1326 * @bad_send_wr: On an immediate failure, this parameter will reference
1327 * the work request that failed to be posted on the QP.
1329 static inline int ib_post_send(struct ib_qp *qp,
1330 struct ib_send_wr *send_wr,
1331 struct ib_send_wr **bad_send_wr)
1333 return qp->device->post_send(qp, send_wr, bad_send_wr);
1337 * ib_post_recv - Posts a list of work requests to the receive queue of
1339 * @qp: The QP to post the work request on.
1340 * @recv_wr: A list of work requests to post on the receive queue.
1341 * @bad_recv_wr: On an immediate failure, this parameter will reference
1342 * the work request that failed to be posted on the QP.
1344 static inline int ib_post_recv(struct ib_qp *qp,
1345 struct ib_recv_wr *recv_wr,
1346 struct ib_recv_wr **bad_recv_wr)
1348 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
1352 * ib_create_cq - Creates a CQ on the specified device.
1353 * @device: The device on which to create the CQ.
1354 * @comp_handler: A user-specified callback that is invoked when a
1355 * completion event occurs on the CQ.
1356 * @event_handler: A user-specified callback that is invoked when an
1357 * asynchronous event not associated with a completion occurs on the CQ.
1358 * @cq_context: Context associated with the CQ returned to the user via
1359 * the associated completion and event handlers.
1360 * @cqe: The minimum size of the CQ.
1361 * @comp_vector - Completion vector used to signal completion events.
1362 * Must be >= 0 and < context->num_comp_vectors.
1364 * Users can examine the cq structure to determine the actual CQ size.
1366 struct ib_cq *ib_create_cq(struct ib_device *device,
1367 ib_comp_handler comp_handler,
1368 void (*event_handler)(struct ib_event *, void *),
1369 void *cq_context, int cqe, int comp_vector);
1372 * ib_resize_cq - Modifies the capacity of the CQ.
1373 * @cq: The CQ to resize.
1374 * @cqe: The minimum size of the CQ.
1376 * Users can examine the cq structure to determine the actual CQ size.
1378 int ib_resize_cq(struct ib_cq *cq, int cqe);
1381 * ib_destroy_cq - Destroys the specified CQ.
1382 * @cq: The CQ to destroy.
1384 int ib_destroy_cq(struct ib_cq *cq);
1387 * ib_poll_cq - poll a CQ for completion(s)
1388 * @cq:the CQ being polled
1389 * @num_entries:maximum number of completions to return
1390 * @wc:array of at least @num_entries &struct ib_wc where completions
1393 * Poll a CQ for (possibly multiple) completions. If the return value
1394 * is < 0, an error occurred. If the return value is >= 0, it is the
1395 * number of completions returned. If the return value is
1396 * non-negative and < num_entries, then the CQ was emptied.
1398 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
1401 return cq->device->poll_cq(cq, num_entries, wc);
1405 * ib_peek_cq - Returns the number of unreaped completions currently
1406 * on the specified CQ.
1407 * @cq: The CQ to peek.
1408 * @wc_cnt: A minimum number of unreaped completions to check for.
1410 * If the number of unreaped completions is greater than or equal to wc_cnt,
1411 * this function returns wc_cnt, otherwise, it returns the actual number of
1412 * unreaped completions.
1414 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
1417 * ib_req_notify_cq - Request completion notification on a CQ.
1418 * @cq: The CQ to generate an event for.
1420 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
1421 * to request an event on the next solicited event or next work
1422 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
1423 * may also be |ed in to request a hint about missed events, as
1427 * < 0 means an error occurred while requesting notification
1428 * == 0 means notification was requested successfully, and if
1429 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
1430 * were missed and it is safe to wait for another event. In
1431 * this case is it guaranteed that any work completions added
1432 * to the CQ since the last CQ poll will trigger a completion
1433 * notification event.
1434 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
1435 * in. It means that the consumer must poll the CQ again to
1436 * make sure it is empty to avoid missing an event because of a
1437 * race between requesting notification and an entry being
1438 * added to the CQ. This return value means it is possible
1439 * (but not guaranteed) that a work completion has been added
1440 * to the CQ since the last poll without triggering a
1441 * completion notification event.
1443 static inline int ib_req_notify_cq(struct ib_cq *cq,
1444 enum ib_cq_notify_flags flags)
1446 return cq->device->req_notify_cq(cq, flags);
1450 * ib_req_ncomp_notif - Request completion notification when there are
1451 * at least the specified number of unreaped completions on the CQ.
1452 * @cq: The CQ to generate an event for.
1453 * @wc_cnt: The number of unreaped completions that should be on the
1454 * CQ before an event is generated.
1456 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
1458 return cq->device->req_ncomp_notif ?
1459 cq->device->req_ncomp_notif(cq, wc_cnt) :
1464 * ib_get_dma_mr - Returns a memory region for system memory that is
1466 * @pd: The protection domain associated with the memory region.
1467 * @mr_access_flags: Specifies the memory access rights.
1469 * Note that the ib_dma_*() functions defined below must be used
1470 * to create/destroy addresses used with the Lkey or Rkey returned
1471 * by ib_get_dma_mr().
1473 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
1476 * ib_dma_mapping_error - check a DMA addr for error
1477 * @dev: The device for which the dma_addr was created
1478 * @dma_addr: The DMA address to check
1480 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
1483 return dev->dma_ops->mapping_error(dev, dma_addr);
1484 return dma_mapping_error(dma_addr);
1488 * ib_dma_map_single - Map a kernel virtual address to DMA address
1489 * @dev: The device for which the dma_addr is to be created
1490 * @cpu_addr: The kernel virtual address
1491 * @size: The size of the region in bytes
1492 * @direction: The direction of the DMA
1494 static inline u64 ib_dma_map_single(struct ib_device *dev,
1495 void *cpu_addr, size_t size,
1496 enum dma_data_direction direction)
1499 return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
1500 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
1504 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
1505 * @dev: The device for which the DMA address was created
1506 * @addr: The DMA address
1507 * @size: The size of the region in bytes
1508 * @direction: The direction of the DMA
1510 static inline void ib_dma_unmap_single(struct ib_device *dev,
1511 u64 addr, size_t size,
1512 enum dma_data_direction direction)
1515 dev->dma_ops->unmap_single(dev, addr, size, direction);
1517 dma_unmap_single(dev->dma_device, addr, size, direction);
1521 * ib_dma_map_page - Map a physical page to DMA address
1522 * @dev: The device for which the dma_addr is to be created
1523 * @page: The page to be mapped
1524 * @offset: The offset within the page
1525 * @size: The size of the region in bytes
1526 * @direction: The direction of the DMA
1528 static inline u64 ib_dma_map_page(struct ib_device *dev,
1530 unsigned long offset,
1532 enum dma_data_direction direction)
1535 return dev->dma_ops->map_page(dev, page, offset, size, direction);
1536 return dma_map_page(dev->dma_device, page, offset, size, direction);
1540 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
1541 * @dev: The device for which the DMA address was created
1542 * @addr: The DMA address
1543 * @size: The size of the region in bytes
1544 * @direction: The direction of the DMA
1546 static inline void ib_dma_unmap_page(struct ib_device *dev,
1547 u64 addr, size_t size,
1548 enum dma_data_direction direction)
1551 dev->dma_ops->unmap_page(dev, addr, size, direction);
1553 dma_unmap_page(dev->dma_device, addr, size, direction);
1557 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
1558 * @dev: The device for which the DMA addresses are to be created
1559 * @sg: The array of scatter/gather entries
1560 * @nents: The number of scatter/gather entries
1561 * @direction: The direction of the DMA
1563 static inline int ib_dma_map_sg(struct ib_device *dev,
1564 struct scatterlist *sg, int nents,
1565 enum dma_data_direction direction)
1568 return dev->dma_ops->map_sg(dev, sg, nents, direction);
1569 return dma_map_sg(dev->dma_device, sg, nents, direction);
1573 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
1574 * @dev: The device for which the DMA addresses were created
1575 * @sg: The array of scatter/gather entries
1576 * @nents: The number of scatter/gather entries
1577 * @direction: The direction of the DMA
1579 static inline void ib_dma_unmap_sg(struct ib_device *dev,
1580 struct scatterlist *sg, int nents,
1581 enum dma_data_direction direction)
1584 dev->dma_ops->unmap_sg(dev, sg, nents, direction);
1586 dma_unmap_sg(dev->dma_device, sg, nents, direction);
1590 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
1591 * @dev: The device for which the DMA addresses were created
1592 * @sg: The scatter/gather entry
1594 static inline u64 ib_sg_dma_address(struct ib_device *dev,
1595 struct scatterlist *sg)
1598 return dev->dma_ops->dma_address(dev, sg);
1599 return sg_dma_address(sg);
1603 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
1604 * @dev: The device for which the DMA addresses were created
1605 * @sg: The scatter/gather entry
1607 static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
1608 struct scatterlist *sg)
1611 return dev->dma_ops->dma_len(dev, sg);
1612 return sg_dma_len(sg);
1616 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
1617 * @dev: The device for which the DMA address was created
1618 * @addr: The DMA address
1619 * @size: The size of the region in bytes
1620 * @dir: The direction of the DMA
1622 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
1625 enum dma_data_direction dir)
1628 dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
1630 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
1634 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
1635 * @dev: The device for which the DMA address was created
1636 * @addr: The DMA address
1637 * @size: The size of the region in bytes
1638 * @dir: The direction of the DMA
1640 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
1643 enum dma_data_direction dir)
1646 dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
1648 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
1652 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
1653 * @dev: The device for which the DMA address is requested
1654 * @size: The size of the region to allocate in bytes
1655 * @dma_handle: A pointer for returning the DMA address of the region
1656 * @flag: memory allocator flags
1658 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
1664 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
1669 ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
1670 *dma_handle = handle;
1676 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
1677 * @dev: The device for which the DMA addresses were allocated
1678 * @size: The size of the region
1679 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
1680 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
1682 static inline void ib_dma_free_coherent(struct ib_device *dev,
1683 size_t size, void *cpu_addr,
1687 dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
1689 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
1693 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
1695 * @pd: The protection domain associated assigned to the registered region.
1696 * @phys_buf_array: Specifies a list of physical buffers to use in the
1698 * @num_phys_buf: Specifies the size of the phys_buf_array.
1699 * @mr_access_flags: Specifies the memory access rights.
1700 * @iova_start: The offset of the region's starting I/O virtual address.
1702 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
1703 struct ib_phys_buf *phys_buf_array,
1705 int mr_access_flags,
1709 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
1710 * Conceptually, this call performs the functions deregister memory region
1711 * followed by register physical memory region. Where possible,
1712 * resources are reused instead of deallocated and reallocated.
1713 * @mr: The memory region to modify.
1714 * @mr_rereg_mask: A bit-mask used to indicate which of the following
1715 * properties of the memory region are being modified.
1716 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
1717 * the new protection domain to associated with the memory region,
1718 * otherwise, this parameter is ignored.
1719 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1720 * field specifies a list of physical buffers to use in the new
1721 * translation, otherwise, this parameter is ignored.
1722 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1723 * field specifies the size of the phys_buf_array, otherwise, this
1724 * parameter is ignored.
1725 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
1726 * field specifies the new memory access rights, otherwise, this
1727 * parameter is ignored.
1728 * @iova_start: The offset of the region's starting I/O virtual address.
1730 int ib_rereg_phys_mr(struct ib_mr *mr,
1733 struct ib_phys_buf *phys_buf_array,
1735 int mr_access_flags,
1739 * ib_query_mr - Retrieves information about a specific memory region.
1740 * @mr: The memory region to retrieve information about.
1741 * @mr_attr: The attributes of the specified memory region.
1743 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
1746 * ib_dereg_mr - Deregisters a memory region and removes it from the
1747 * HCA translation table.
1748 * @mr: The memory region to deregister.
1750 int ib_dereg_mr(struct ib_mr *mr);
1753 * ib_alloc_mw - Allocates a memory window.
1754 * @pd: The protection domain associated with the memory window.
1756 struct ib_mw *ib_alloc_mw(struct ib_pd *pd);
1759 * ib_bind_mw - Posts a work request to the send queue of the specified
1760 * QP, which binds the memory window to the given address range and
1761 * remote access attributes.
1762 * @qp: QP to post the bind work request on.
1763 * @mw: The memory window to bind.
1764 * @mw_bind: Specifies information about the memory window, including
1765 * its address range, remote access rights, and associated memory region.
1767 static inline int ib_bind_mw(struct ib_qp *qp,
1769 struct ib_mw_bind *mw_bind)
1771 /* XXX reference counting in corresponding MR? */
1772 return mw->device->bind_mw ?
1773 mw->device->bind_mw(qp, mw, mw_bind) :
1778 * ib_dealloc_mw - Deallocates a memory window.
1779 * @mw: The memory window to deallocate.
1781 int ib_dealloc_mw(struct ib_mw *mw);
1784 * ib_alloc_fmr - Allocates a unmapped fast memory region.
1785 * @pd: The protection domain associated with the unmapped region.
1786 * @mr_access_flags: Specifies the memory access rights.
1787 * @fmr_attr: Attributes of the unmapped region.
1789 * A fast memory region must be mapped before it can be used as part of
1792 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1793 int mr_access_flags,
1794 struct ib_fmr_attr *fmr_attr);
1797 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
1798 * @fmr: The fast memory region to associate with the pages.
1799 * @page_list: An array of physical pages to map to the fast memory region.
1800 * @list_len: The number of pages in page_list.
1801 * @iova: The I/O virtual address to use with the mapped region.
1803 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
1804 u64 *page_list, int list_len,
1807 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
1811 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
1812 * @fmr_list: A linked list of fast memory regions to unmap.
1814 int ib_unmap_fmr(struct list_head *fmr_list);
1817 * ib_dealloc_fmr - Deallocates a fast memory region.
1818 * @fmr: The fast memory region to deallocate.
1820 int ib_dealloc_fmr(struct ib_fmr *fmr);
1823 * ib_attach_mcast - Attaches the specified QP to a multicast group.
1824 * @qp: QP to attach to the multicast group. The QP must be type
1826 * @gid: Multicast group GID.
1827 * @lid: Multicast group LID in host byte order.
1829 * In order to send and receive multicast packets, subnet
1830 * administration must have created the multicast group and configured
1831 * the fabric appropriately. The port associated with the specified
1832 * QP must also be a member of the multicast group.
1834 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1837 * ib_detach_mcast - Detaches the specified QP from a multicast group.
1838 * @qp: QP to detach from the multicast group.
1839 * @gid: Multicast group GID.
1840 * @lid: Multicast group LID in host byte order.
1842 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1844 #endif /* IB_VERBS_H */