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 IB_MULTICAST_QPN = 0xffffff
301 struct ib_global_route grh;
314 IB_WC_LOC_EEC_OP_ERR,
319 IB_WC_LOC_ACCESS_ERR,
320 IB_WC_REM_INV_REQ_ERR,
321 IB_WC_REM_ACCESS_ERR,
324 IB_WC_RNR_RETRY_EXC_ERR,
325 IB_WC_LOC_RDD_VIOL_ERR,
326 IB_WC_REM_INV_RD_REQ_ERR,
329 IB_WC_INV_EEC_STATE_ERR,
331 IB_WC_RESP_TIMEOUT_ERR,
343 * Set value of IB_WC_RECV so consumers can test if a completion is a
344 * receive by testing (opcode & IB_WC_RECV).
347 IB_WC_RECV_RDMA_WITH_IMM
352 IB_WC_WITH_IMM = (1<<1)
357 enum ib_wc_status status;
358 enum ib_wc_opcode opcode;
369 u8 port_num; /* valid only for DR SMPs on switches */
392 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
393 * here (and in that order) since the MAD layer uses them as
394 * indices into a 2-entry table.
406 struct ib_qp_init_attr {
407 void (*event_handler)(struct ib_event *, void *);
409 struct ib_cq *send_cq;
410 struct ib_cq *recv_cq;
412 struct ib_qp_cap cap;
413 enum ib_sig_type sq_sig_type;
414 enum ib_qp_type qp_type;
415 u8 port_num; /* special QP types only */
418 enum ib_rnr_timeout {
419 IB_RNR_TIMER_655_36 = 0,
420 IB_RNR_TIMER_000_01 = 1,
421 IB_RNR_TIMER_000_02 = 2,
422 IB_RNR_TIMER_000_03 = 3,
423 IB_RNR_TIMER_000_04 = 4,
424 IB_RNR_TIMER_000_06 = 5,
425 IB_RNR_TIMER_000_08 = 6,
426 IB_RNR_TIMER_000_12 = 7,
427 IB_RNR_TIMER_000_16 = 8,
428 IB_RNR_TIMER_000_24 = 9,
429 IB_RNR_TIMER_000_32 = 10,
430 IB_RNR_TIMER_000_48 = 11,
431 IB_RNR_TIMER_000_64 = 12,
432 IB_RNR_TIMER_000_96 = 13,
433 IB_RNR_TIMER_001_28 = 14,
434 IB_RNR_TIMER_001_92 = 15,
435 IB_RNR_TIMER_002_56 = 16,
436 IB_RNR_TIMER_003_84 = 17,
437 IB_RNR_TIMER_005_12 = 18,
438 IB_RNR_TIMER_007_68 = 19,
439 IB_RNR_TIMER_010_24 = 20,
440 IB_RNR_TIMER_015_36 = 21,
441 IB_RNR_TIMER_020_48 = 22,
442 IB_RNR_TIMER_030_72 = 23,
443 IB_RNR_TIMER_040_96 = 24,
444 IB_RNR_TIMER_061_44 = 25,
445 IB_RNR_TIMER_081_92 = 26,
446 IB_RNR_TIMER_122_88 = 27,
447 IB_RNR_TIMER_163_84 = 28,
448 IB_RNR_TIMER_245_76 = 29,
449 IB_RNR_TIMER_327_68 = 30,
450 IB_RNR_TIMER_491_52 = 31
453 enum ib_qp_attr_mask {
455 IB_QP_CUR_STATE = (1<<1),
456 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
457 IB_QP_ACCESS_FLAGS = (1<<3),
458 IB_QP_PKEY_INDEX = (1<<4),
462 IB_QP_PATH_MTU = (1<<8),
463 IB_QP_TIMEOUT = (1<<9),
464 IB_QP_RETRY_CNT = (1<<10),
465 IB_QP_RNR_RETRY = (1<<11),
466 IB_QP_RQ_PSN = (1<<12),
467 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
468 IB_QP_ALT_PATH = (1<<14),
469 IB_QP_MIN_RNR_TIMER = (1<<15),
470 IB_QP_SQ_PSN = (1<<16),
471 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
472 IB_QP_PATH_MIG_STATE = (1<<18),
474 IB_QP_DEST_QPN = (1<<20)
494 enum ib_qp_state qp_state;
495 enum ib_qp_state cur_qp_state;
496 enum ib_mtu path_mtu;
497 enum ib_mig_state path_mig_state;
503 struct ib_qp_cap cap;
504 struct ib_ah_attr ah_attr;
505 struct ib_ah_attr alt_ah_attr;
508 u8 en_sqd_async_notify;
511 u8 max_dest_rd_atomic;
523 IB_WR_RDMA_WRITE_WITH_IMM,
527 IB_WR_ATOMIC_CMP_AND_SWP,
528 IB_WR_ATOMIC_FETCH_AND_ADD
533 IB_SEND_SIGNALED = (1<<1),
534 IB_SEND_SOLICITED = (1<<2),
535 IB_SEND_INLINE = (1<<3)
545 struct ib_send_wr *next;
547 struct ib_sge *sg_list;
549 enum ib_wr_opcode opcode;
565 struct ib_mad_hdr *mad_hdr;
568 int timeout_ms; /* valid for MADs only */
569 u16 pkey_index; /* valid for GSI only */
570 u8 port_num; /* valid for DR SMPs on switch only */
576 struct ib_recv_wr *next;
578 struct ib_sge *sg_list;
582 enum ib_access_flags {
583 IB_ACCESS_LOCAL_WRITE = 1,
584 IB_ACCESS_REMOTE_WRITE = (1<<1),
585 IB_ACCESS_REMOTE_READ = (1<<2),
586 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
587 IB_ACCESS_MW_BIND = (1<<4)
597 u64 device_virt_addr;
604 enum ib_mr_rereg_flags {
605 IB_MR_REREG_TRANS = 1,
606 IB_MR_REREG_PD = (1<<1),
607 IB_MR_REREG_ACCESS = (1<<2)
626 struct ib_device *device;
627 struct list_head pd_list;
628 struct list_head mr_list;
629 struct list_head mw_list;
630 struct list_head cq_list;
631 struct list_head qp_list;
632 struct list_head srq_list;
633 struct list_head ah_list;
638 u64 user_handle; /* handle given to us by userspace */
639 struct ib_ucontext *context; /* associated user context */
640 struct list_head list; /* link to context's list */
641 u32 id; /* index into kernel idr */
645 unsigned long user_base;
646 unsigned long virt_base;
651 struct list_head chunk_list;
654 struct ib_umem_chunk {
655 struct list_head list;
658 struct scatterlist page_list[0];
668 #define IB_UMEM_MAX_PAGE_CHUNK \
669 ((PAGE_SIZE - offsetof(struct ib_umem_chunk, page_list)) / \
670 ((void *) &((struct ib_umem_chunk *) 0)->page_list[1] - \
671 (void *) &((struct ib_umem_chunk *) 0)->page_list[0]))
673 struct ib_umem_object {
674 struct ib_uobject uobject;
679 struct ib_device *device;
680 struct ib_uobject *uobject;
681 atomic_t usecnt; /* count all resources */
685 struct ib_device *device;
687 struct ib_uobject *uobject;
690 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
693 struct ib_device *device;
694 struct ib_uobject *uobject;
695 ib_comp_handler comp_handler;
696 void (*event_handler)(struct ib_event *, void *);
699 atomic_t usecnt; /* count number of work queues */
703 struct ib_device *device;
704 struct ib_uobject *uobject;
711 struct ib_device *device;
713 struct ib_cq *send_cq;
714 struct ib_cq *recv_cq;
716 struct ib_uobject *uobject;
717 void (*event_handler)(struct ib_event *, void *);
720 enum ib_qp_type qp_type;
724 struct ib_device *device;
726 struct ib_uobject *uobject;
729 atomic_t usecnt; /* count number of MWs */
733 struct ib_device *device;
735 struct ib_uobject *uobject;
740 struct ib_device *device;
742 struct list_head list;
750 enum ib_process_mad_flags {
751 IB_MAD_IGNORE_MKEY = 1,
752 IB_MAD_IGNORE_BKEY = 2,
753 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
757 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
758 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
759 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
760 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
763 #define IB_DEVICE_NAME_MAX 64
767 struct ib_event_handler event_handler;
768 struct ib_pkey_cache **pkey_cache;
769 struct ib_gid_cache **gid_cache;
773 struct device *dma_device;
775 char name[IB_DEVICE_NAME_MAX];
777 struct list_head event_handler_list;
778 spinlock_t event_handler_lock;
780 struct list_head core_list;
781 struct list_head client_data_list;
782 spinlock_t client_data_lock;
784 struct ib_cache cache;
788 int (*query_device)(struct ib_device *device,
789 struct ib_device_attr *device_attr);
790 int (*query_port)(struct ib_device *device,
792 struct ib_port_attr *port_attr);
793 int (*query_gid)(struct ib_device *device,
794 u8 port_num, int index,
796 int (*query_pkey)(struct ib_device *device,
797 u8 port_num, u16 index, u16 *pkey);
798 int (*modify_device)(struct ib_device *device,
799 int device_modify_mask,
800 struct ib_device_modify *device_modify);
801 int (*modify_port)(struct ib_device *device,
802 u8 port_num, int port_modify_mask,
803 struct ib_port_modify *port_modify);
804 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
805 struct ib_udata *udata);
806 int (*dealloc_ucontext)(struct ib_ucontext *context);
807 int (*mmap)(struct ib_ucontext *context,
808 struct vm_area_struct *vma);
809 struct ib_pd * (*alloc_pd)(struct ib_device *device,
810 struct ib_ucontext *context,
811 struct ib_udata *udata);
812 int (*dealloc_pd)(struct ib_pd *pd);
813 struct ib_ah * (*create_ah)(struct ib_pd *pd,
814 struct ib_ah_attr *ah_attr);
815 int (*modify_ah)(struct ib_ah *ah,
816 struct ib_ah_attr *ah_attr);
817 int (*query_ah)(struct ib_ah *ah,
818 struct ib_ah_attr *ah_attr);
819 int (*destroy_ah)(struct ib_ah *ah);
820 struct ib_qp * (*create_qp)(struct ib_pd *pd,
821 struct ib_qp_init_attr *qp_init_attr,
822 struct ib_udata *udata);
823 int (*modify_qp)(struct ib_qp *qp,
824 struct ib_qp_attr *qp_attr,
826 int (*query_qp)(struct ib_qp *qp,
827 struct ib_qp_attr *qp_attr,
829 struct ib_qp_init_attr *qp_init_attr);
830 int (*destroy_qp)(struct ib_qp *qp);
831 int (*post_send)(struct ib_qp *qp,
832 struct ib_send_wr *send_wr,
833 struct ib_send_wr **bad_send_wr);
834 int (*post_recv)(struct ib_qp *qp,
835 struct ib_recv_wr *recv_wr,
836 struct ib_recv_wr **bad_recv_wr);
837 struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
838 struct ib_ucontext *context,
839 struct ib_udata *udata);
840 int (*destroy_cq)(struct ib_cq *cq);
841 int (*resize_cq)(struct ib_cq *cq, int *cqe);
842 int (*poll_cq)(struct ib_cq *cq, int num_entries,
844 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
845 int (*req_notify_cq)(struct ib_cq *cq,
846 enum ib_cq_notify cq_notify);
847 int (*req_ncomp_notif)(struct ib_cq *cq,
849 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
850 int mr_access_flags);
851 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
852 struct ib_phys_buf *phys_buf_array,
856 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
857 struct ib_umem *region,
859 struct ib_udata *udata);
860 int (*query_mr)(struct ib_mr *mr,
861 struct ib_mr_attr *mr_attr);
862 int (*dereg_mr)(struct ib_mr *mr);
863 int (*rereg_phys_mr)(struct ib_mr *mr,
866 struct ib_phys_buf *phys_buf_array,
870 struct ib_mw * (*alloc_mw)(struct ib_pd *pd);
871 int (*bind_mw)(struct ib_qp *qp,
873 struct ib_mw_bind *mw_bind);
874 int (*dealloc_mw)(struct ib_mw *mw);
875 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
877 struct ib_fmr_attr *fmr_attr);
878 int (*map_phys_fmr)(struct ib_fmr *fmr,
879 u64 *page_list, int list_len,
881 int (*unmap_fmr)(struct list_head *fmr_list);
882 int (*dealloc_fmr)(struct ib_fmr *fmr);
883 int (*attach_mcast)(struct ib_qp *qp,
886 int (*detach_mcast)(struct ib_qp *qp,
889 int (*process_mad)(struct ib_device *device,
890 int process_mad_flags,
893 struct ib_grh *in_grh,
894 struct ib_mad *in_mad,
895 struct ib_mad *out_mad);
897 struct module *owner;
898 struct class_device class_dev;
899 struct kobject ports_parent;
900 struct list_head port_list;
903 IB_DEV_UNINITIALIZED,
914 void (*add) (struct ib_device *);
915 void (*remove)(struct ib_device *);
917 struct list_head list;
920 struct ib_device *ib_alloc_device(size_t size);
921 void ib_dealloc_device(struct ib_device *device);
923 int ib_register_device (struct ib_device *device);
924 void ib_unregister_device(struct ib_device *device);
926 int ib_register_client (struct ib_client *client);
927 void ib_unregister_client(struct ib_client *client);
929 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
930 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
933 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
935 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
938 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
940 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
943 int ib_register_event_handler (struct ib_event_handler *event_handler);
944 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
945 void ib_dispatch_event(struct ib_event *event);
947 int ib_query_device(struct ib_device *device,
948 struct ib_device_attr *device_attr);
950 int ib_query_port(struct ib_device *device,
951 u8 port_num, struct ib_port_attr *port_attr);
953 int ib_query_gid(struct ib_device *device,
954 u8 port_num, int index, union ib_gid *gid);
956 int ib_query_pkey(struct ib_device *device,
957 u8 port_num, u16 index, u16 *pkey);
959 int ib_modify_device(struct ib_device *device,
960 int device_modify_mask,
961 struct ib_device_modify *device_modify);
963 int ib_modify_port(struct ib_device *device,
964 u8 port_num, int port_modify_mask,
965 struct ib_port_modify *port_modify);
968 * ib_alloc_pd - Allocates an unused protection domain.
969 * @device: The device on which to allocate the protection domain.
971 * A protection domain object provides an association between QPs, shared
972 * receive queues, address handles, memory regions, and memory windows.
974 struct ib_pd *ib_alloc_pd(struct ib_device *device);
977 * ib_dealloc_pd - Deallocates a protection domain.
978 * @pd: The protection domain to deallocate.
980 int ib_dealloc_pd(struct ib_pd *pd);
983 * ib_create_ah - Creates an address handle for the given address vector.
984 * @pd: The protection domain associated with the address handle.
985 * @ah_attr: The attributes of the address vector.
987 * The address handle is used to reference a local or global destination
988 * in all UD QP post sends.
990 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
993 * ib_modify_ah - Modifies the address vector associated with an address
995 * @ah: The address handle to modify.
996 * @ah_attr: The new address vector attributes to associate with the
999 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1002 * ib_query_ah - Queries the address vector associated with an address
1004 * @ah: The address handle to query.
1005 * @ah_attr: The address vector attributes associated with the address
1008 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1011 * ib_destroy_ah - Destroys an address handle.
1012 * @ah: The address handle to destroy.
1014 int ib_destroy_ah(struct ib_ah *ah);
1017 * ib_create_qp - Creates a QP associated with the specified protection
1019 * @pd: The protection domain associated with the QP.
1020 * @qp_init_attr: A list of initial attributes required to create the QP.
1022 struct ib_qp *ib_create_qp(struct ib_pd *pd,
1023 struct ib_qp_init_attr *qp_init_attr);
1026 * ib_modify_qp - Modifies the attributes for the specified QP and then
1027 * transitions the QP to the given state.
1028 * @qp: The QP to modify.
1029 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1030 * the current values of selected QP attributes are returned.
1031 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1032 * are being modified.
1034 int ib_modify_qp(struct ib_qp *qp,
1035 struct ib_qp_attr *qp_attr,
1039 * ib_query_qp - Returns the attribute list and current values for the
1041 * @qp: The QP to query.
1042 * @qp_attr: The attributes of the specified QP.
1043 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1044 * @qp_init_attr: Additional attributes of the selected QP.
1046 * The qp_attr_mask may be used to limit the query to gathering only the
1047 * selected attributes.
1049 int ib_query_qp(struct ib_qp *qp,
1050 struct ib_qp_attr *qp_attr,
1052 struct ib_qp_init_attr *qp_init_attr);
1055 * ib_destroy_qp - Destroys the specified QP.
1056 * @qp: The QP to destroy.
1058 int ib_destroy_qp(struct ib_qp *qp);
1061 * ib_post_send - Posts a list of work requests to the send queue of
1063 * @qp: The QP to post the work request on.
1064 * @send_wr: A list of work requests to post on the send queue.
1065 * @bad_send_wr: On an immediate failure, this parameter will reference
1066 * the work request that failed to be posted on the QP.
1068 static inline int ib_post_send(struct ib_qp *qp,
1069 struct ib_send_wr *send_wr,
1070 struct ib_send_wr **bad_send_wr)
1072 return qp->device->post_send(qp, send_wr, bad_send_wr);
1076 * ib_post_recv - Posts a list of work requests to the receive queue of
1078 * @qp: The QP to post the work request on.
1079 * @recv_wr: A list of work requests to post on the receive queue.
1080 * @bad_recv_wr: On an immediate failure, this parameter will reference
1081 * the work request that failed to be posted on the QP.
1083 static inline int ib_post_recv(struct ib_qp *qp,
1084 struct ib_recv_wr *recv_wr,
1085 struct ib_recv_wr **bad_recv_wr)
1087 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
1091 * ib_create_cq - Creates a CQ on the specified device.
1092 * @device: The device on which to create the CQ.
1093 * @comp_handler: A user-specified callback that is invoked when a
1094 * completion event occurs on the CQ.
1095 * @event_handler: A user-specified callback that is invoked when an
1096 * asynchronous event not associated with a completion occurs on the CQ.
1097 * @cq_context: Context associated with the CQ returned to the user via
1098 * the associated completion and event handlers.
1099 * @cqe: The minimum size of the CQ.
1101 * Users can examine the cq structure to determine the actual CQ size.
1103 struct ib_cq *ib_create_cq(struct ib_device *device,
1104 ib_comp_handler comp_handler,
1105 void (*event_handler)(struct ib_event *, void *),
1106 void *cq_context, int cqe);
1109 * ib_resize_cq - Modifies the capacity of the CQ.
1110 * @cq: The CQ to resize.
1111 * @cqe: The minimum size of the CQ.
1113 * Users can examine the cq structure to determine the actual CQ size.
1115 int ib_resize_cq(struct ib_cq *cq, int cqe);
1118 * ib_destroy_cq - Destroys the specified CQ.
1119 * @cq: The CQ to destroy.
1121 int ib_destroy_cq(struct ib_cq *cq);
1124 * ib_poll_cq - poll a CQ for completion(s)
1125 * @cq:the CQ being polled
1126 * @num_entries:maximum number of completions to return
1127 * @wc:array of at least @num_entries &struct ib_wc where completions
1130 * Poll a CQ for (possibly multiple) completions. If the return value
1131 * is < 0, an error occurred. If the return value is >= 0, it is the
1132 * number of completions returned. If the return value is
1133 * non-negative and < num_entries, then the CQ was emptied.
1135 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
1138 return cq->device->poll_cq(cq, num_entries, wc);
1142 * ib_peek_cq - Returns the number of unreaped completions currently
1143 * on the specified CQ.
1144 * @cq: The CQ to peek.
1145 * @wc_cnt: A minimum number of unreaped completions to check for.
1147 * If the number of unreaped completions is greater than or equal to wc_cnt,
1148 * this function returns wc_cnt, otherwise, it returns the actual number of
1149 * unreaped completions.
1151 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
1154 * ib_req_notify_cq - Request completion notification on a CQ.
1155 * @cq: The CQ to generate an event for.
1156 * @cq_notify: If set to %IB_CQ_SOLICITED, completion notification will
1157 * occur on the next solicited event. If set to %IB_CQ_NEXT_COMP,
1158 * notification will occur on the next completion.
1160 static inline int ib_req_notify_cq(struct ib_cq *cq,
1161 enum ib_cq_notify cq_notify)
1163 return cq->device->req_notify_cq(cq, cq_notify);
1167 * ib_req_ncomp_notif - Request completion notification when there are
1168 * at least the specified number of unreaped completions on the CQ.
1169 * @cq: The CQ to generate an event for.
1170 * @wc_cnt: The number of unreaped completions that should be on the
1171 * CQ before an event is generated.
1173 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
1175 return cq->device->req_ncomp_notif ?
1176 cq->device->req_ncomp_notif(cq, wc_cnt) :
1181 * ib_get_dma_mr - Returns a memory region for system memory that is
1183 * @pd: The protection domain associated with the memory region.
1184 * @mr_access_flags: Specifies the memory access rights.
1186 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
1189 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
1191 * @pd: The protection domain associated assigned to the registered region.
1192 * @phys_buf_array: Specifies a list of physical buffers to use in the
1194 * @num_phys_buf: Specifies the size of the phys_buf_array.
1195 * @mr_access_flags: Specifies the memory access rights.
1196 * @iova_start: The offset of the region's starting I/O virtual address.
1198 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
1199 struct ib_phys_buf *phys_buf_array,
1201 int mr_access_flags,
1205 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
1206 * Conceptually, this call performs the functions deregister memory region
1207 * followed by register physical memory region. Where possible,
1208 * resources are reused instead of deallocated and reallocated.
1209 * @mr: The memory region to modify.
1210 * @mr_rereg_mask: A bit-mask used to indicate which of the following
1211 * properties of the memory region are being modified.
1212 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
1213 * the new protection domain to associated with the memory region,
1214 * otherwise, this parameter is ignored.
1215 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1216 * field specifies a list of physical buffers to use in the new
1217 * translation, otherwise, this parameter is ignored.
1218 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1219 * field specifies the size of the phys_buf_array, otherwise, this
1220 * parameter is ignored.
1221 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
1222 * field specifies the new memory access rights, otherwise, this
1223 * parameter is ignored.
1224 * @iova_start: The offset of the region's starting I/O virtual address.
1226 int ib_rereg_phys_mr(struct ib_mr *mr,
1229 struct ib_phys_buf *phys_buf_array,
1231 int mr_access_flags,
1235 * ib_query_mr - Retrieves information about a specific memory region.
1236 * @mr: The memory region to retrieve information about.
1237 * @mr_attr: The attributes of the specified memory region.
1239 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
1242 * ib_dereg_mr - Deregisters a memory region and removes it from the
1243 * HCA translation table.
1244 * @mr: The memory region to deregister.
1246 int ib_dereg_mr(struct ib_mr *mr);
1249 * ib_alloc_mw - Allocates a memory window.
1250 * @pd: The protection domain associated with the memory window.
1252 struct ib_mw *ib_alloc_mw(struct ib_pd *pd);
1255 * ib_bind_mw - Posts a work request to the send queue of the specified
1256 * QP, which binds the memory window to the given address range and
1257 * remote access attributes.
1258 * @qp: QP to post the bind work request on.
1259 * @mw: The memory window to bind.
1260 * @mw_bind: Specifies information about the memory window, including
1261 * its address range, remote access rights, and associated memory region.
1263 static inline int ib_bind_mw(struct ib_qp *qp,
1265 struct ib_mw_bind *mw_bind)
1267 /* XXX reference counting in corresponding MR? */
1268 return mw->device->bind_mw ?
1269 mw->device->bind_mw(qp, mw, mw_bind) :
1274 * ib_dealloc_mw - Deallocates a memory window.
1275 * @mw: The memory window to deallocate.
1277 int ib_dealloc_mw(struct ib_mw *mw);
1280 * ib_alloc_fmr - Allocates a unmapped fast memory region.
1281 * @pd: The protection domain associated with the unmapped region.
1282 * @mr_access_flags: Specifies the memory access rights.
1283 * @fmr_attr: Attributes of the unmapped region.
1285 * A fast memory region must be mapped before it can be used as part of
1288 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1289 int mr_access_flags,
1290 struct ib_fmr_attr *fmr_attr);
1293 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
1294 * @fmr: The fast memory region to associate with the pages.
1295 * @page_list: An array of physical pages to map to the fast memory region.
1296 * @list_len: The number of pages in page_list.
1297 * @iova: The I/O virtual address to use with the mapped region.
1299 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
1300 u64 *page_list, int list_len,
1303 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
1307 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
1308 * @fmr_list: A linked list of fast memory regions to unmap.
1310 int ib_unmap_fmr(struct list_head *fmr_list);
1313 * ib_dealloc_fmr - Deallocates a fast memory region.
1314 * @fmr: The fast memory region to deallocate.
1316 int ib_dealloc_fmr(struct ib_fmr *fmr);
1319 * ib_attach_mcast - Attaches the specified QP to a multicast group.
1320 * @qp: QP to attach to the multicast group. The QP must be type
1322 * @gid: Multicast group GID.
1323 * @lid: Multicast group LID in host byte order.
1325 * In order to send and receive multicast packets, subnet
1326 * administration must have created the multicast group and configured
1327 * the fabric appropriately. The port associated with the specified
1328 * QP must also be a member of the multicast group.
1330 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1333 * ib_detach_mcast - Detaches the specified QP from a multicast group.
1334 * @qp: QP to detach from the multicast group.
1335 * @gid: Multicast group GID.
1336 * @lid: Multicast group LID in host byte order.
1338 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1340 #endif /* IB_VERBS_H */