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 Cisco Systems. All rights reserved.
9 * This software is available to you under a choice of one of two
10 * licenses. You may choose to be licensed under the terms of the GNU
11 * General Public License (GPL) Version 2, available from the file
12 * COPYING in the main directory of this source tree, or the
13 * OpenIB.org BSD license below:
15 * Redistribution and use in source and binary forms, with or
16 * without modification, are permitted provided that the following
19 * - Redistributions of source code must retain the above
20 * copyright notice, this list of conditions and the following
23 * - Redistributions in binary form must reproduce the above
24 * copyright notice, this list of conditions and the following
25 * disclaimer in the documentation and/or other materials
26 * provided with the distribution.
28 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
29 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
31 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
32 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
33 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
34 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
37 * $Id: ib_verbs.h 1349 2004-12-16 21:09:43Z roland $
40 #if !defined(IB_VERBS_H)
43 #include <linux/types.h>
44 #include <linux/device.h>
46 #include <asm/atomic.h>
47 #include <asm/scatterlist.h>
48 #include <asm/uaccess.h>
64 enum ib_device_cap_flags {
65 IB_DEVICE_RESIZE_MAX_WR = 1,
66 IB_DEVICE_BAD_PKEY_CNTR = (1<<1),
67 IB_DEVICE_BAD_QKEY_CNTR = (1<<2),
68 IB_DEVICE_RAW_MULTI = (1<<3),
69 IB_DEVICE_AUTO_PATH_MIG = (1<<4),
70 IB_DEVICE_CHANGE_PHY_PORT = (1<<5),
71 IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6),
72 IB_DEVICE_CURR_QP_STATE_MOD = (1<<7),
73 IB_DEVICE_SHUTDOWN_PORT = (1<<8),
74 IB_DEVICE_INIT_TYPE = (1<<9),
75 IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10),
76 IB_DEVICE_SYS_IMAGE_GUID = (1<<11),
77 IB_DEVICE_RC_RNR_NAK_GEN = (1<<12),
78 IB_DEVICE_SRQ_RESIZE = (1<<13),
79 IB_DEVICE_N_NOTIFY_CQ = (1<<14),
88 struct ib_device_attr {
109 int max_qp_init_rd_atom;
110 int max_ee_init_rd_atom;
111 enum ib_atomic_cap atomic_cap;
118 int max_mcast_qp_attach;
119 int max_total_mcast_qp_attach;
127 u8 local_ca_ack_delay;
138 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
141 case IB_MTU_256: return 256;
142 case IB_MTU_512: return 512;
143 case IB_MTU_1024: return 1024;
144 case IB_MTU_2048: return 2048;
145 case IB_MTU_4096: return 4096;
156 IB_PORT_ACTIVE_DEFER = 5
159 enum ib_port_cap_flags {
161 IB_PORT_NOTICE_SUP = 1 << 2,
162 IB_PORT_TRAP_SUP = 1 << 3,
163 IB_PORT_OPT_IPD_SUP = 1 << 4,
164 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
165 IB_PORT_SL_MAP_SUP = 1 << 6,
166 IB_PORT_MKEY_NVRAM = 1 << 7,
167 IB_PORT_PKEY_NVRAM = 1 << 8,
168 IB_PORT_LED_INFO_SUP = 1 << 9,
169 IB_PORT_SM_DISABLED = 1 << 10,
170 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
171 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
172 IB_PORT_CM_SUP = 1 << 16,
173 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
174 IB_PORT_REINIT_SUP = 1 << 18,
175 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
176 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
177 IB_PORT_DR_NOTICE_SUP = 1 << 21,
178 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
179 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
180 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
181 IB_PORT_CLIENT_REG_SUP = 1 << 25
191 static inline int ib_width_enum_to_int(enum ib_port_width width)
194 case IB_WIDTH_1X: return 1;
195 case IB_WIDTH_4X: return 4;
196 case IB_WIDTH_8X: return 8;
197 case IB_WIDTH_12X: return 12;
202 struct ib_port_attr {
203 enum ib_port_state state;
205 enum ib_mtu active_mtu;
224 enum ib_device_modify_flags {
225 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1
228 struct ib_device_modify {
232 enum ib_port_modify_flags {
233 IB_PORT_SHUTDOWN = 1,
234 IB_PORT_INIT_TYPE = (1<<2),
235 IB_PORT_RESET_QKEY_CNTR = (1<<3)
238 struct ib_port_modify {
239 u32 set_port_cap_mask;
240 u32 clr_port_cap_mask;
248 IB_EVENT_QP_ACCESS_ERR,
252 IB_EVENT_PATH_MIG_ERR,
253 IB_EVENT_DEVICE_FATAL,
254 IB_EVENT_PORT_ACTIVE,
257 IB_EVENT_PKEY_CHANGE,
262 struct ib_device *device;
268 enum ib_event_type event;
271 struct ib_event_handler {
272 struct ib_device *device;
273 void (*handler)(struct ib_event_handler *, struct ib_event *);
274 struct list_head list;
277 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
279 (_ptr)->device = _device; \
280 (_ptr)->handler = _handler; \
281 INIT_LIST_HEAD(&(_ptr)->list); \
284 struct ib_global_route {
293 u32 version_tclass_flow;
302 IB_MULTICAST_QPN = 0xffffff
310 struct ib_global_route grh;
323 IB_WC_LOC_EEC_OP_ERR,
328 IB_WC_LOC_ACCESS_ERR,
329 IB_WC_REM_INV_REQ_ERR,
330 IB_WC_REM_ACCESS_ERR,
333 IB_WC_RNR_RETRY_EXC_ERR,
334 IB_WC_LOC_RDD_VIOL_ERR,
335 IB_WC_REM_INV_RD_REQ_ERR,
338 IB_WC_INV_EEC_STATE_ERR,
340 IB_WC_RESP_TIMEOUT_ERR,
352 * Set value of IB_WC_RECV so consumers can test if a completion is a
353 * receive by testing (opcode & IB_WC_RECV).
356 IB_WC_RECV_RDMA_WITH_IMM
361 IB_WC_WITH_IMM = (1<<1)
366 enum ib_wc_status status;
367 enum ib_wc_opcode opcode;
378 u8 port_num; /* valid only for DR SMPs on switches */
401 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
402 * here (and in that order) since the MAD layer uses them as
403 * indices into a 2-entry table.
415 struct ib_qp_init_attr {
416 void (*event_handler)(struct ib_event *, void *);
418 struct ib_cq *send_cq;
419 struct ib_cq *recv_cq;
421 struct ib_qp_cap cap;
422 enum ib_sig_type sq_sig_type;
423 enum ib_qp_type qp_type;
424 u8 port_num; /* special QP types only */
427 enum ib_rnr_timeout {
428 IB_RNR_TIMER_655_36 = 0,
429 IB_RNR_TIMER_000_01 = 1,
430 IB_RNR_TIMER_000_02 = 2,
431 IB_RNR_TIMER_000_03 = 3,
432 IB_RNR_TIMER_000_04 = 4,
433 IB_RNR_TIMER_000_06 = 5,
434 IB_RNR_TIMER_000_08 = 6,
435 IB_RNR_TIMER_000_12 = 7,
436 IB_RNR_TIMER_000_16 = 8,
437 IB_RNR_TIMER_000_24 = 9,
438 IB_RNR_TIMER_000_32 = 10,
439 IB_RNR_TIMER_000_48 = 11,
440 IB_RNR_TIMER_000_64 = 12,
441 IB_RNR_TIMER_000_96 = 13,
442 IB_RNR_TIMER_001_28 = 14,
443 IB_RNR_TIMER_001_92 = 15,
444 IB_RNR_TIMER_002_56 = 16,
445 IB_RNR_TIMER_003_84 = 17,
446 IB_RNR_TIMER_005_12 = 18,
447 IB_RNR_TIMER_007_68 = 19,
448 IB_RNR_TIMER_010_24 = 20,
449 IB_RNR_TIMER_015_36 = 21,
450 IB_RNR_TIMER_020_48 = 22,
451 IB_RNR_TIMER_030_72 = 23,
452 IB_RNR_TIMER_040_96 = 24,
453 IB_RNR_TIMER_061_44 = 25,
454 IB_RNR_TIMER_081_92 = 26,
455 IB_RNR_TIMER_122_88 = 27,
456 IB_RNR_TIMER_163_84 = 28,
457 IB_RNR_TIMER_245_76 = 29,
458 IB_RNR_TIMER_327_68 = 30,
459 IB_RNR_TIMER_491_52 = 31
462 enum ib_qp_attr_mask {
464 IB_QP_CUR_STATE = (1<<1),
465 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
466 IB_QP_ACCESS_FLAGS = (1<<3),
467 IB_QP_PKEY_INDEX = (1<<4),
471 IB_QP_PATH_MTU = (1<<8),
472 IB_QP_TIMEOUT = (1<<9),
473 IB_QP_RETRY_CNT = (1<<10),
474 IB_QP_RNR_RETRY = (1<<11),
475 IB_QP_RQ_PSN = (1<<12),
476 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
477 IB_QP_ALT_PATH = (1<<14),
478 IB_QP_MIN_RNR_TIMER = (1<<15),
479 IB_QP_SQ_PSN = (1<<16),
480 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
481 IB_QP_PATH_MIG_STATE = (1<<18),
483 IB_QP_DEST_QPN = (1<<20)
503 enum ib_qp_state qp_state;
504 enum ib_qp_state cur_qp_state;
505 enum ib_mtu path_mtu;
506 enum ib_mig_state path_mig_state;
512 struct ib_qp_cap cap;
513 struct ib_ah_attr ah_attr;
514 struct ib_ah_attr alt_ah_attr;
517 u8 en_sqd_async_notify;
520 u8 max_dest_rd_atomic;
532 IB_WR_RDMA_WRITE_WITH_IMM,
536 IB_WR_ATOMIC_CMP_AND_SWP,
537 IB_WR_ATOMIC_FETCH_AND_ADD
542 IB_SEND_SIGNALED = (1<<1),
543 IB_SEND_SOLICITED = (1<<2),
544 IB_SEND_INLINE = (1<<3)
554 struct ib_send_wr *next;
556 struct ib_sge *sg_list;
558 enum ib_wr_opcode opcode;
574 struct ib_mad_hdr *mad_hdr;
577 int timeout_ms; /* valid for MADs only */
578 int retries; /* valid for MADs only */
579 u16 pkey_index; /* valid for GSI only */
580 u8 port_num; /* valid for DR SMPs on switch only */
586 struct ib_recv_wr *next;
588 struct ib_sge *sg_list;
592 enum ib_access_flags {
593 IB_ACCESS_LOCAL_WRITE = 1,
594 IB_ACCESS_REMOTE_WRITE = (1<<1),
595 IB_ACCESS_REMOTE_READ = (1<<2),
596 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
597 IB_ACCESS_MW_BIND = (1<<4)
607 u64 device_virt_addr;
614 enum ib_mr_rereg_flags {
615 IB_MR_REREG_TRANS = 1,
616 IB_MR_REREG_PD = (1<<1),
617 IB_MR_REREG_ACCESS = (1<<2)
636 struct ib_device *device;
637 struct list_head pd_list;
638 struct list_head mr_list;
639 struct list_head mw_list;
640 struct list_head cq_list;
641 struct list_head qp_list;
642 struct list_head srq_list;
643 struct list_head ah_list;
648 u64 user_handle; /* handle given to us by userspace */
649 struct ib_ucontext *context; /* associated user context */
650 struct list_head list; /* link to context's list */
651 u32 id; /* index into kernel idr */
655 unsigned long user_base;
656 unsigned long virt_base;
661 struct list_head chunk_list;
664 struct ib_umem_chunk {
665 struct list_head list;
668 struct scatterlist page_list[0];
678 #define IB_UMEM_MAX_PAGE_CHUNK \
679 ((PAGE_SIZE - offsetof(struct ib_umem_chunk, page_list)) / \
680 ((void *) &((struct ib_umem_chunk *) 0)->page_list[1] - \
681 (void *) &((struct ib_umem_chunk *) 0)->page_list[0]))
683 struct ib_umem_object {
684 struct ib_uobject uobject;
689 struct ib_device *device;
690 struct ib_uobject *uobject;
691 atomic_t usecnt; /* count all resources */
695 struct ib_device *device;
697 struct ib_uobject *uobject;
700 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
703 struct ib_device *device;
704 struct ib_uobject *uobject;
705 ib_comp_handler comp_handler;
706 void (*event_handler)(struct ib_event *, void *);
709 atomic_t usecnt; /* count number of work queues */
713 struct ib_device *device;
714 struct ib_uobject *uobject;
721 struct ib_device *device;
723 struct ib_cq *send_cq;
724 struct ib_cq *recv_cq;
726 struct ib_uobject *uobject;
727 void (*event_handler)(struct ib_event *, void *);
730 enum ib_qp_type qp_type;
734 struct ib_device *device;
736 struct ib_uobject *uobject;
739 atomic_t usecnt; /* count number of MWs */
743 struct ib_device *device;
745 struct ib_uobject *uobject;
750 struct ib_device *device;
752 struct list_head list;
760 enum ib_process_mad_flags {
761 IB_MAD_IGNORE_MKEY = 1,
762 IB_MAD_IGNORE_BKEY = 2,
763 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
767 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
768 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
769 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
770 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
773 #define IB_DEVICE_NAME_MAX 64
777 struct ib_event_handler event_handler;
778 struct ib_pkey_cache **pkey_cache;
779 struct ib_gid_cache **gid_cache;
783 struct device *dma_device;
785 char name[IB_DEVICE_NAME_MAX];
787 struct list_head event_handler_list;
788 spinlock_t event_handler_lock;
790 struct list_head core_list;
791 struct list_head client_data_list;
792 spinlock_t client_data_lock;
794 struct ib_cache cache;
798 int (*query_device)(struct ib_device *device,
799 struct ib_device_attr *device_attr);
800 int (*query_port)(struct ib_device *device,
802 struct ib_port_attr *port_attr);
803 int (*query_gid)(struct ib_device *device,
804 u8 port_num, int index,
806 int (*query_pkey)(struct ib_device *device,
807 u8 port_num, u16 index, u16 *pkey);
808 int (*modify_device)(struct ib_device *device,
809 int device_modify_mask,
810 struct ib_device_modify *device_modify);
811 int (*modify_port)(struct ib_device *device,
812 u8 port_num, int port_modify_mask,
813 struct ib_port_modify *port_modify);
814 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
815 struct ib_udata *udata);
816 int (*dealloc_ucontext)(struct ib_ucontext *context);
817 int (*mmap)(struct ib_ucontext *context,
818 struct vm_area_struct *vma);
819 struct ib_pd * (*alloc_pd)(struct ib_device *device,
820 struct ib_ucontext *context,
821 struct ib_udata *udata);
822 int (*dealloc_pd)(struct ib_pd *pd);
823 struct ib_ah * (*create_ah)(struct ib_pd *pd,
824 struct ib_ah_attr *ah_attr);
825 int (*modify_ah)(struct ib_ah *ah,
826 struct ib_ah_attr *ah_attr);
827 int (*query_ah)(struct ib_ah *ah,
828 struct ib_ah_attr *ah_attr);
829 int (*destroy_ah)(struct ib_ah *ah);
830 struct ib_qp * (*create_qp)(struct ib_pd *pd,
831 struct ib_qp_init_attr *qp_init_attr,
832 struct ib_udata *udata);
833 int (*modify_qp)(struct ib_qp *qp,
834 struct ib_qp_attr *qp_attr,
836 int (*query_qp)(struct ib_qp *qp,
837 struct ib_qp_attr *qp_attr,
839 struct ib_qp_init_attr *qp_init_attr);
840 int (*destroy_qp)(struct ib_qp *qp);
841 int (*post_send)(struct ib_qp *qp,
842 struct ib_send_wr *send_wr,
843 struct ib_send_wr **bad_send_wr);
844 int (*post_recv)(struct ib_qp *qp,
845 struct ib_recv_wr *recv_wr,
846 struct ib_recv_wr **bad_recv_wr);
847 struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
848 struct ib_ucontext *context,
849 struct ib_udata *udata);
850 int (*destroy_cq)(struct ib_cq *cq);
851 int (*resize_cq)(struct ib_cq *cq, int *cqe);
852 int (*poll_cq)(struct ib_cq *cq, int num_entries,
854 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
855 int (*req_notify_cq)(struct ib_cq *cq,
856 enum ib_cq_notify cq_notify);
857 int (*req_ncomp_notif)(struct ib_cq *cq,
859 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
860 int mr_access_flags);
861 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
862 struct ib_phys_buf *phys_buf_array,
866 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
867 struct ib_umem *region,
869 struct ib_udata *udata);
870 int (*query_mr)(struct ib_mr *mr,
871 struct ib_mr_attr *mr_attr);
872 int (*dereg_mr)(struct ib_mr *mr);
873 int (*rereg_phys_mr)(struct ib_mr *mr,
876 struct ib_phys_buf *phys_buf_array,
880 struct ib_mw * (*alloc_mw)(struct ib_pd *pd);
881 int (*bind_mw)(struct ib_qp *qp,
883 struct ib_mw_bind *mw_bind);
884 int (*dealloc_mw)(struct ib_mw *mw);
885 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
887 struct ib_fmr_attr *fmr_attr);
888 int (*map_phys_fmr)(struct ib_fmr *fmr,
889 u64 *page_list, int list_len,
891 int (*unmap_fmr)(struct list_head *fmr_list);
892 int (*dealloc_fmr)(struct ib_fmr *fmr);
893 int (*attach_mcast)(struct ib_qp *qp,
896 int (*detach_mcast)(struct ib_qp *qp,
899 int (*process_mad)(struct ib_device *device,
900 int process_mad_flags,
903 struct ib_grh *in_grh,
904 struct ib_mad *in_mad,
905 struct ib_mad *out_mad);
907 struct module *owner;
908 struct class_device class_dev;
909 struct kobject ports_parent;
910 struct list_head port_list;
913 IB_DEV_UNINITIALIZED,
924 void (*add) (struct ib_device *);
925 void (*remove)(struct ib_device *);
927 struct list_head list;
930 struct ib_device *ib_alloc_device(size_t size);
931 void ib_dealloc_device(struct ib_device *device);
933 int ib_register_device (struct ib_device *device);
934 void ib_unregister_device(struct ib_device *device);
936 int ib_register_client (struct ib_client *client);
937 void ib_unregister_client(struct ib_client *client);
939 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
940 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
943 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
945 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
948 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
950 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
953 int ib_register_event_handler (struct ib_event_handler *event_handler);
954 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
955 void ib_dispatch_event(struct ib_event *event);
957 int ib_query_device(struct ib_device *device,
958 struct ib_device_attr *device_attr);
960 int ib_query_port(struct ib_device *device,
961 u8 port_num, struct ib_port_attr *port_attr);
963 int ib_query_gid(struct ib_device *device,
964 u8 port_num, int index, union ib_gid *gid);
966 int ib_query_pkey(struct ib_device *device,
967 u8 port_num, u16 index, u16 *pkey);
969 int ib_modify_device(struct ib_device *device,
970 int device_modify_mask,
971 struct ib_device_modify *device_modify);
973 int ib_modify_port(struct ib_device *device,
974 u8 port_num, int port_modify_mask,
975 struct ib_port_modify *port_modify);
978 * ib_alloc_pd - Allocates an unused protection domain.
979 * @device: The device on which to allocate the protection domain.
981 * A protection domain object provides an association between QPs, shared
982 * receive queues, address handles, memory regions, and memory windows.
984 struct ib_pd *ib_alloc_pd(struct ib_device *device);
987 * ib_dealloc_pd - Deallocates a protection domain.
988 * @pd: The protection domain to deallocate.
990 int ib_dealloc_pd(struct ib_pd *pd);
993 * ib_create_ah - Creates an address handle for the given address vector.
994 * @pd: The protection domain associated with the address handle.
995 * @ah_attr: The attributes of the address vector.
997 * The address handle is used to reference a local or global destination
998 * in all UD QP post sends.
1000 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
1003 * ib_create_ah_from_wc - Creates an address handle associated with the
1004 * sender of the specified work completion.
1005 * @pd: The protection domain associated with the address handle.
1006 * @wc: Work completion information associated with a received message.
1007 * @grh: References the received global route header. This parameter is
1008 * ignored unless the work completion indicates that the GRH is valid.
1009 * @port_num: The outbound port number to associate with the address.
1011 * The address handle is used to reference a local or global destination
1012 * in all UD QP post sends.
1014 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
1015 struct ib_grh *grh, u8 port_num);
1018 * ib_modify_ah - Modifies the address vector associated with an address
1020 * @ah: The address handle to modify.
1021 * @ah_attr: The new address vector attributes to associate with the
1024 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1027 * ib_query_ah - Queries the address vector associated with an address
1029 * @ah: The address handle to query.
1030 * @ah_attr: The address vector attributes associated with the address
1033 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1036 * ib_destroy_ah - Destroys an address handle.
1037 * @ah: The address handle to destroy.
1039 int ib_destroy_ah(struct ib_ah *ah);
1042 * ib_create_qp - Creates a QP associated with the specified protection
1044 * @pd: The protection domain associated with the QP.
1045 * @qp_init_attr: A list of initial attributes required to create the QP.
1047 struct ib_qp *ib_create_qp(struct ib_pd *pd,
1048 struct ib_qp_init_attr *qp_init_attr);
1051 * ib_modify_qp - Modifies the attributes for the specified QP and then
1052 * transitions the QP to the given state.
1053 * @qp: The QP to modify.
1054 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1055 * the current values of selected QP attributes are returned.
1056 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1057 * are being modified.
1059 int ib_modify_qp(struct ib_qp *qp,
1060 struct ib_qp_attr *qp_attr,
1064 * ib_query_qp - Returns the attribute list and current values for the
1066 * @qp: The QP to query.
1067 * @qp_attr: The attributes of the specified QP.
1068 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1069 * @qp_init_attr: Additional attributes of the selected QP.
1071 * The qp_attr_mask may be used to limit the query to gathering only the
1072 * selected attributes.
1074 int ib_query_qp(struct ib_qp *qp,
1075 struct ib_qp_attr *qp_attr,
1077 struct ib_qp_init_attr *qp_init_attr);
1080 * ib_destroy_qp - Destroys the specified QP.
1081 * @qp: The QP to destroy.
1083 int ib_destroy_qp(struct ib_qp *qp);
1086 * ib_post_send - Posts a list of work requests to the send queue of
1088 * @qp: The QP to post the work request on.
1089 * @send_wr: A list of work requests to post on the send queue.
1090 * @bad_send_wr: On an immediate failure, this parameter will reference
1091 * the work request that failed to be posted on the QP.
1093 static inline int ib_post_send(struct ib_qp *qp,
1094 struct ib_send_wr *send_wr,
1095 struct ib_send_wr **bad_send_wr)
1097 return qp->device->post_send(qp, send_wr, bad_send_wr);
1101 * ib_post_recv - Posts a list of work requests to the receive queue of
1103 * @qp: The QP to post the work request on.
1104 * @recv_wr: A list of work requests to post on the receive queue.
1105 * @bad_recv_wr: On an immediate failure, this parameter will reference
1106 * the work request that failed to be posted on the QP.
1108 static inline int ib_post_recv(struct ib_qp *qp,
1109 struct ib_recv_wr *recv_wr,
1110 struct ib_recv_wr **bad_recv_wr)
1112 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
1116 * ib_create_cq - Creates a CQ on the specified device.
1117 * @device: The device on which to create the CQ.
1118 * @comp_handler: A user-specified callback that is invoked when a
1119 * completion event occurs on the CQ.
1120 * @event_handler: A user-specified callback that is invoked when an
1121 * asynchronous event not associated with a completion occurs on the CQ.
1122 * @cq_context: Context associated with the CQ returned to the user via
1123 * the associated completion and event handlers.
1124 * @cqe: The minimum size of the CQ.
1126 * Users can examine the cq structure to determine the actual CQ size.
1128 struct ib_cq *ib_create_cq(struct ib_device *device,
1129 ib_comp_handler comp_handler,
1130 void (*event_handler)(struct ib_event *, void *),
1131 void *cq_context, int cqe);
1134 * ib_resize_cq - Modifies the capacity of the CQ.
1135 * @cq: The CQ to resize.
1136 * @cqe: The minimum size of the CQ.
1138 * Users can examine the cq structure to determine the actual CQ size.
1140 int ib_resize_cq(struct ib_cq *cq, int cqe);
1143 * ib_destroy_cq - Destroys the specified CQ.
1144 * @cq: The CQ to destroy.
1146 int ib_destroy_cq(struct ib_cq *cq);
1149 * ib_poll_cq - poll a CQ for completion(s)
1150 * @cq:the CQ being polled
1151 * @num_entries:maximum number of completions to return
1152 * @wc:array of at least @num_entries &struct ib_wc where completions
1155 * Poll a CQ for (possibly multiple) completions. If the return value
1156 * is < 0, an error occurred. If the return value is >= 0, it is the
1157 * number of completions returned. If the return value is
1158 * non-negative and < num_entries, then the CQ was emptied.
1160 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
1163 return cq->device->poll_cq(cq, num_entries, wc);
1167 * ib_peek_cq - Returns the number of unreaped completions currently
1168 * on the specified CQ.
1169 * @cq: The CQ to peek.
1170 * @wc_cnt: A minimum number of unreaped completions to check for.
1172 * If the number of unreaped completions is greater than or equal to wc_cnt,
1173 * this function returns wc_cnt, otherwise, it returns the actual number of
1174 * unreaped completions.
1176 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
1179 * ib_req_notify_cq - Request completion notification on a CQ.
1180 * @cq: The CQ to generate an event for.
1181 * @cq_notify: If set to %IB_CQ_SOLICITED, completion notification will
1182 * occur on the next solicited event. If set to %IB_CQ_NEXT_COMP,
1183 * notification will occur on the next completion.
1185 static inline int ib_req_notify_cq(struct ib_cq *cq,
1186 enum ib_cq_notify cq_notify)
1188 return cq->device->req_notify_cq(cq, cq_notify);
1192 * ib_req_ncomp_notif - Request completion notification when there are
1193 * at least the specified number of unreaped completions on the CQ.
1194 * @cq: The CQ to generate an event for.
1195 * @wc_cnt: The number of unreaped completions that should be on the
1196 * CQ before an event is generated.
1198 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
1200 return cq->device->req_ncomp_notif ?
1201 cq->device->req_ncomp_notif(cq, wc_cnt) :
1206 * ib_get_dma_mr - Returns a memory region for system memory that is
1208 * @pd: The protection domain associated with the memory region.
1209 * @mr_access_flags: Specifies the memory access rights.
1211 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
1214 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
1216 * @pd: The protection domain associated assigned to the registered region.
1217 * @phys_buf_array: Specifies a list of physical buffers to use in the
1219 * @num_phys_buf: Specifies the size of the phys_buf_array.
1220 * @mr_access_flags: Specifies the memory access rights.
1221 * @iova_start: The offset of the region's starting I/O virtual address.
1223 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
1224 struct ib_phys_buf *phys_buf_array,
1226 int mr_access_flags,
1230 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
1231 * Conceptually, this call performs the functions deregister memory region
1232 * followed by register physical memory region. Where possible,
1233 * resources are reused instead of deallocated and reallocated.
1234 * @mr: The memory region to modify.
1235 * @mr_rereg_mask: A bit-mask used to indicate which of the following
1236 * properties of the memory region are being modified.
1237 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
1238 * the new protection domain to associated with the memory region,
1239 * otherwise, this parameter is ignored.
1240 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1241 * field specifies a list of physical buffers to use in the new
1242 * translation, otherwise, this parameter is ignored.
1243 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1244 * field specifies the size of the phys_buf_array, otherwise, this
1245 * parameter is ignored.
1246 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
1247 * field specifies the new memory access rights, otherwise, this
1248 * parameter is ignored.
1249 * @iova_start: The offset of the region's starting I/O virtual address.
1251 int ib_rereg_phys_mr(struct ib_mr *mr,
1254 struct ib_phys_buf *phys_buf_array,
1256 int mr_access_flags,
1260 * ib_query_mr - Retrieves information about a specific memory region.
1261 * @mr: The memory region to retrieve information about.
1262 * @mr_attr: The attributes of the specified memory region.
1264 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
1267 * ib_dereg_mr - Deregisters a memory region and removes it from the
1268 * HCA translation table.
1269 * @mr: The memory region to deregister.
1271 int ib_dereg_mr(struct ib_mr *mr);
1274 * ib_alloc_mw - Allocates a memory window.
1275 * @pd: The protection domain associated with the memory window.
1277 struct ib_mw *ib_alloc_mw(struct ib_pd *pd);
1280 * ib_bind_mw - Posts a work request to the send queue of the specified
1281 * QP, which binds the memory window to the given address range and
1282 * remote access attributes.
1283 * @qp: QP to post the bind work request on.
1284 * @mw: The memory window to bind.
1285 * @mw_bind: Specifies information about the memory window, including
1286 * its address range, remote access rights, and associated memory region.
1288 static inline int ib_bind_mw(struct ib_qp *qp,
1290 struct ib_mw_bind *mw_bind)
1292 /* XXX reference counting in corresponding MR? */
1293 return mw->device->bind_mw ?
1294 mw->device->bind_mw(qp, mw, mw_bind) :
1299 * ib_dealloc_mw - Deallocates a memory window.
1300 * @mw: The memory window to deallocate.
1302 int ib_dealloc_mw(struct ib_mw *mw);
1305 * ib_alloc_fmr - Allocates a unmapped fast memory region.
1306 * @pd: The protection domain associated with the unmapped region.
1307 * @mr_access_flags: Specifies the memory access rights.
1308 * @fmr_attr: Attributes of the unmapped region.
1310 * A fast memory region must be mapped before it can be used as part of
1313 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1314 int mr_access_flags,
1315 struct ib_fmr_attr *fmr_attr);
1318 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
1319 * @fmr: The fast memory region to associate with the pages.
1320 * @page_list: An array of physical pages to map to the fast memory region.
1321 * @list_len: The number of pages in page_list.
1322 * @iova: The I/O virtual address to use with the mapped region.
1324 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
1325 u64 *page_list, int list_len,
1328 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
1332 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
1333 * @fmr_list: A linked list of fast memory regions to unmap.
1335 int ib_unmap_fmr(struct list_head *fmr_list);
1338 * ib_dealloc_fmr - Deallocates a fast memory region.
1339 * @fmr: The fast memory region to deallocate.
1341 int ib_dealloc_fmr(struct ib_fmr *fmr);
1344 * ib_attach_mcast - Attaches the specified QP to a multicast group.
1345 * @qp: QP to attach to the multicast group. The QP must be type
1347 * @gid: Multicast group GID.
1348 * @lid: Multicast group LID in host byte order.
1350 * In order to send and receive multicast packets, subnet
1351 * administration must have created the multicast group and configured
1352 * the fabric appropriately. The port associated with the specified
1353 * QP must also be a member of the multicast group.
1355 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1358 * ib_detach_mcast - Detaches the specified QP from a multicast group.
1359 * @qp: QP to detach from the multicast group.
1360 * @gid: Multicast group GID.
1361 * @lid: Multicast group LID in host byte order.
1363 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1365 #endif /* IB_VERBS_H */