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 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 <asm/atomic.h>
48 #include <asm/scatterlist.h>
49 #include <asm/uaccess.h>
60 /* IB values map to NodeInfo:NodeType. */
67 enum rdma_transport_type {
72 enum rdma_transport_type
73 rdma_node_get_transport(enum rdma_node_type node_type) __attribute_const__;
75 enum ib_device_cap_flags {
76 IB_DEVICE_RESIZE_MAX_WR = 1,
77 IB_DEVICE_BAD_PKEY_CNTR = (1<<1),
78 IB_DEVICE_BAD_QKEY_CNTR = (1<<2),
79 IB_DEVICE_RAW_MULTI = (1<<3),
80 IB_DEVICE_AUTO_PATH_MIG = (1<<4),
81 IB_DEVICE_CHANGE_PHY_PORT = (1<<5),
82 IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6),
83 IB_DEVICE_CURR_QP_STATE_MOD = (1<<7),
84 IB_DEVICE_SHUTDOWN_PORT = (1<<8),
85 IB_DEVICE_INIT_TYPE = (1<<9),
86 IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10),
87 IB_DEVICE_SYS_IMAGE_GUID = (1<<11),
88 IB_DEVICE_RC_RNR_NAK_GEN = (1<<12),
89 IB_DEVICE_SRQ_RESIZE = (1<<13),
90 IB_DEVICE_N_NOTIFY_CQ = (1<<14),
91 IB_DEVICE_ZERO_STAG = (1<<15),
92 IB_DEVICE_SEND_W_INV = (1<<16),
93 IB_DEVICE_MEM_WINDOW = (1<<17)
102 struct ib_device_attr {
104 __be64 sys_image_guid;
112 int device_cap_flags;
122 int max_qp_init_rd_atom;
123 int max_ee_init_rd_atom;
124 enum ib_atomic_cap atomic_cap;
131 int max_mcast_qp_attach;
132 int max_total_mcast_qp_attach;
140 u8 local_ca_ack_delay;
151 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
154 case IB_MTU_256: return 256;
155 case IB_MTU_512: return 512;
156 case IB_MTU_1024: return 1024;
157 case IB_MTU_2048: return 2048;
158 case IB_MTU_4096: return 4096;
169 IB_PORT_ACTIVE_DEFER = 5
172 enum ib_port_cap_flags {
174 IB_PORT_NOTICE_SUP = 1 << 2,
175 IB_PORT_TRAP_SUP = 1 << 3,
176 IB_PORT_OPT_IPD_SUP = 1 << 4,
177 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
178 IB_PORT_SL_MAP_SUP = 1 << 6,
179 IB_PORT_MKEY_NVRAM = 1 << 7,
180 IB_PORT_PKEY_NVRAM = 1 << 8,
181 IB_PORT_LED_INFO_SUP = 1 << 9,
182 IB_PORT_SM_DISABLED = 1 << 10,
183 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
184 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
185 IB_PORT_CM_SUP = 1 << 16,
186 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
187 IB_PORT_REINIT_SUP = 1 << 18,
188 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
189 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
190 IB_PORT_DR_NOTICE_SUP = 1 << 21,
191 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
192 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
193 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
194 IB_PORT_CLIENT_REG_SUP = 1 << 25
204 static inline int ib_width_enum_to_int(enum ib_port_width width)
207 case IB_WIDTH_1X: return 1;
208 case IB_WIDTH_4X: return 4;
209 case IB_WIDTH_8X: return 8;
210 case IB_WIDTH_12X: return 12;
215 struct ib_port_attr {
216 enum ib_port_state state;
218 enum ib_mtu active_mtu;
237 enum ib_device_modify_flags {
238 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
239 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
242 struct ib_device_modify {
247 enum ib_port_modify_flags {
248 IB_PORT_SHUTDOWN = 1,
249 IB_PORT_INIT_TYPE = (1<<2),
250 IB_PORT_RESET_QKEY_CNTR = (1<<3)
253 struct ib_port_modify {
254 u32 set_port_cap_mask;
255 u32 clr_port_cap_mask;
263 IB_EVENT_QP_ACCESS_ERR,
267 IB_EVENT_PATH_MIG_ERR,
268 IB_EVENT_DEVICE_FATAL,
269 IB_EVENT_PORT_ACTIVE,
272 IB_EVENT_PKEY_CHANGE,
275 IB_EVENT_SRQ_LIMIT_REACHED,
276 IB_EVENT_QP_LAST_WQE_REACHED,
277 IB_EVENT_CLIENT_REREGISTER
281 struct ib_device *device;
288 enum ib_event_type event;
291 struct ib_event_handler {
292 struct ib_device *device;
293 void (*handler)(struct ib_event_handler *, struct ib_event *);
294 struct list_head list;
297 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
299 (_ptr)->device = _device; \
300 (_ptr)->handler = _handler; \
301 INIT_LIST_HEAD(&(_ptr)->list); \
304 struct ib_global_route {
313 __be32 version_tclass_flow;
322 IB_MULTICAST_QPN = 0xffffff
325 #define IB_LID_PERMISSIVE __constant_htons(0xFFFF)
332 IB_RATE_PORT_CURRENT = 0,
333 IB_RATE_2_5_GBPS = 2,
341 IB_RATE_120_GBPS = 10
345 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
346 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
347 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
348 * @rate: rate to convert.
350 int ib_rate_to_mult(enum ib_rate rate) __attribute_const__;
353 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
355 * @mult: multiple to convert.
357 enum ib_rate mult_to_ib_rate(int mult) __attribute_const__;
360 struct ib_global_route grh;
373 IB_WC_LOC_EEC_OP_ERR,
378 IB_WC_LOC_ACCESS_ERR,
379 IB_WC_REM_INV_REQ_ERR,
380 IB_WC_REM_ACCESS_ERR,
383 IB_WC_RNR_RETRY_EXC_ERR,
384 IB_WC_LOC_RDD_VIOL_ERR,
385 IB_WC_REM_INV_RD_REQ_ERR,
388 IB_WC_INV_EEC_STATE_ERR,
390 IB_WC_RESP_TIMEOUT_ERR,
402 * Set value of IB_WC_RECV so consumers can test if a completion is a
403 * receive by testing (opcode & IB_WC_RECV).
406 IB_WC_RECV_RDMA_WITH_IMM
411 IB_WC_WITH_IMM = (1<<1)
416 enum ib_wc_status status;
417 enum ib_wc_opcode opcode;
428 u8 port_num; /* valid only for DR SMPs on switches */
436 enum ib_srq_attr_mask {
437 IB_SRQ_MAX_WR = 1 << 0,
438 IB_SRQ_LIMIT = 1 << 1,
447 struct ib_srq_init_attr {
448 void (*event_handler)(struct ib_event *, void *);
450 struct ib_srq_attr attr;
468 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
469 * here (and in that order) since the MAD layer uses them as
470 * indices into a 2-entry table.
482 struct ib_qp_init_attr {
483 void (*event_handler)(struct ib_event *, void *);
485 struct ib_cq *send_cq;
486 struct ib_cq *recv_cq;
488 struct ib_qp_cap cap;
489 enum ib_sig_type sq_sig_type;
490 enum ib_qp_type qp_type;
491 u8 port_num; /* special QP types only */
494 enum ib_rnr_timeout {
495 IB_RNR_TIMER_655_36 = 0,
496 IB_RNR_TIMER_000_01 = 1,
497 IB_RNR_TIMER_000_02 = 2,
498 IB_RNR_TIMER_000_03 = 3,
499 IB_RNR_TIMER_000_04 = 4,
500 IB_RNR_TIMER_000_06 = 5,
501 IB_RNR_TIMER_000_08 = 6,
502 IB_RNR_TIMER_000_12 = 7,
503 IB_RNR_TIMER_000_16 = 8,
504 IB_RNR_TIMER_000_24 = 9,
505 IB_RNR_TIMER_000_32 = 10,
506 IB_RNR_TIMER_000_48 = 11,
507 IB_RNR_TIMER_000_64 = 12,
508 IB_RNR_TIMER_000_96 = 13,
509 IB_RNR_TIMER_001_28 = 14,
510 IB_RNR_TIMER_001_92 = 15,
511 IB_RNR_TIMER_002_56 = 16,
512 IB_RNR_TIMER_003_84 = 17,
513 IB_RNR_TIMER_005_12 = 18,
514 IB_RNR_TIMER_007_68 = 19,
515 IB_RNR_TIMER_010_24 = 20,
516 IB_RNR_TIMER_015_36 = 21,
517 IB_RNR_TIMER_020_48 = 22,
518 IB_RNR_TIMER_030_72 = 23,
519 IB_RNR_TIMER_040_96 = 24,
520 IB_RNR_TIMER_061_44 = 25,
521 IB_RNR_TIMER_081_92 = 26,
522 IB_RNR_TIMER_122_88 = 27,
523 IB_RNR_TIMER_163_84 = 28,
524 IB_RNR_TIMER_245_76 = 29,
525 IB_RNR_TIMER_327_68 = 30,
526 IB_RNR_TIMER_491_52 = 31
529 enum ib_qp_attr_mask {
531 IB_QP_CUR_STATE = (1<<1),
532 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
533 IB_QP_ACCESS_FLAGS = (1<<3),
534 IB_QP_PKEY_INDEX = (1<<4),
538 IB_QP_PATH_MTU = (1<<8),
539 IB_QP_TIMEOUT = (1<<9),
540 IB_QP_RETRY_CNT = (1<<10),
541 IB_QP_RNR_RETRY = (1<<11),
542 IB_QP_RQ_PSN = (1<<12),
543 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
544 IB_QP_ALT_PATH = (1<<14),
545 IB_QP_MIN_RNR_TIMER = (1<<15),
546 IB_QP_SQ_PSN = (1<<16),
547 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
548 IB_QP_PATH_MIG_STATE = (1<<18),
550 IB_QP_DEST_QPN = (1<<20)
570 enum ib_qp_state qp_state;
571 enum ib_qp_state cur_qp_state;
572 enum ib_mtu path_mtu;
573 enum ib_mig_state path_mig_state;
579 struct ib_qp_cap cap;
580 struct ib_ah_attr ah_attr;
581 struct ib_ah_attr alt_ah_attr;
584 u8 en_sqd_async_notify;
587 u8 max_dest_rd_atomic;
599 IB_WR_RDMA_WRITE_WITH_IMM,
603 IB_WR_ATOMIC_CMP_AND_SWP,
604 IB_WR_ATOMIC_FETCH_AND_ADD
609 IB_SEND_SIGNALED = (1<<1),
610 IB_SEND_SOLICITED = (1<<2),
611 IB_SEND_INLINE = (1<<3)
621 struct ib_send_wr *next;
623 struct ib_sge *sg_list;
625 enum ib_wr_opcode opcode;
643 u16 pkey_index; /* valid for GSI only */
644 u8 port_num; /* valid for DR SMPs on switch only */
650 struct ib_recv_wr *next;
652 struct ib_sge *sg_list;
656 enum ib_access_flags {
657 IB_ACCESS_LOCAL_WRITE = 1,
658 IB_ACCESS_REMOTE_WRITE = (1<<1),
659 IB_ACCESS_REMOTE_READ = (1<<2),
660 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
661 IB_ACCESS_MW_BIND = (1<<4)
671 u64 device_virt_addr;
678 enum ib_mr_rereg_flags {
679 IB_MR_REREG_TRANS = 1,
680 IB_MR_REREG_PD = (1<<1),
681 IB_MR_REREG_ACCESS = (1<<2)
700 struct ib_device *device;
701 struct list_head pd_list;
702 struct list_head mr_list;
703 struct list_head mw_list;
704 struct list_head cq_list;
705 struct list_head qp_list;
706 struct list_head srq_list;
707 struct list_head ah_list;
711 u64 user_handle; /* handle given to us by userspace */
712 struct ib_ucontext *context; /* associated user context */
713 void *object; /* containing object */
714 struct list_head list; /* link to context's list */
715 u32 id; /* index into kernel idr */
717 struct rw_semaphore mutex; /* protects .live */
722 unsigned long user_base;
723 unsigned long virt_base;
728 struct list_head chunk_list;
731 struct ib_umem_chunk {
732 struct list_head list;
735 struct scatterlist page_list[0];
745 #define IB_UMEM_MAX_PAGE_CHUNK \
746 ((PAGE_SIZE - offsetof(struct ib_umem_chunk, page_list)) / \
747 ((void *) &((struct ib_umem_chunk *) 0)->page_list[1] - \
748 (void *) &((struct ib_umem_chunk *) 0)->page_list[0]))
750 struct ib_umem_object {
751 struct ib_uobject uobject;
756 struct ib_device *device;
757 struct ib_uobject *uobject;
758 atomic_t usecnt; /* count all resources */
762 struct ib_device *device;
764 struct ib_uobject *uobject;
767 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
770 struct ib_device *device;
771 struct ib_uobject *uobject;
772 ib_comp_handler comp_handler;
773 void (*event_handler)(struct ib_event *, void *);
776 atomic_t usecnt; /* count number of work queues */
780 struct ib_device *device;
782 struct ib_uobject *uobject;
783 void (*event_handler)(struct ib_event *, void *);
789 struct ib_device *device;
791 struct ib_cq *send_cq;
792 struct ib_cq *recv_cq;
794 struct ib_uobject *uobject;
795 void (*event_handler)(struct ib_event *, void *);
798 enum ib_qp_type qp_type;
802 struct ib_device *device;
804 struct ib_uobject *uobject;
807 atomic_t usecnt; /* count number of MWs */
811 struct ib_device *device;
813 struct ib_uobject *uobject;
818 struct ib_device *device;
820 struct list_head list;
828 enum ib_process_mad_flags {
829 IB_MAD_IGNORE_MKEY = 1,
830 IB_MAD_IGNORE_BKEY = 2,
831 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
835 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
836 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
837 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
838 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
841 #define IB_DEVICE_NAME_MAX 64
845 struct ib_event_handler event_handler;
846 struct ib_pkey_cache **pkey_cache;
847 struct ib_gid_cache **gid_cache;
854 struct device *dma_device;
856 char name[IB_DEVICE_NAME_MAX];
858 struct list_head event_handler_list;
859 spinlock_t event_handler_lock;
861 struct list_head core_list;
862 struct list_head client_data_list;
863 spinlock_t client_data_lock;
865 struct ib_cache cache;
869 struct iw_cm_verbs *iwcm;
871 int (*query_device)(struct ib_device *device,
872 struct ib_device_attr *device_attr);
873 int (*query_port)(struct ib_device *device,
875 struct ib_port_attr *port_attr);
876 int (*query_gid)(struct ib_device *device,
877 u8 port_num, int index,
879 int (*query_pkey)(struct ib_device *device,
880 u8 port_num, u16 index, u16 *pkey);
881 int (*modify_device)(struct ib_device *device,
882 int device_modify_mask,
883 struct ib_device_modify *device_modify);
884 int (*modify_port)(struct ib_device *device,
885 u8 port_num, int port_modify_mask,
886 struct ib_port_modify *port_modify);
887 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
888 struct ib_udata *udata);
889 int (*dealloc_ucontext)(struct ib_ucontext *context);
890 int (*mmap)(struct ib_ucontext *context,
891 struct vm_area_struct *vma);
892 struct ib_pd * (*alloc_pd)(struct ib_device *device,
893 struct ib_ucontext *context,
894 struct ib_udata *udata);
895 int (*dealloc_pd)(struct ib_pd *pd);
896 struct ib_ah * (*create_ah)(struct ib_pd *pd,
897 struct ib_ah_attr *ah_attr);
898 int (*modify_ah)(struct ib_ah *ah,
899 struct ib_ah_attr *ah_attr);
900 int (*query_ah)(struct ib_ah *ah,
901 struct ib_ah_attr *ah_attr);
902 int (*destroy_ah)(struct ib_ah *ah);
903 struct ib_srq * (*create_srq)(struct ib_pd *pd,
904 struct ib_srq_init_attr *srq_init_attr,
905 struct ib_udata *udata);
906 int (*modify_srq)(struct ib_srq *srq,
907 struct ib_srq_attr *srq_attr,
908 enum ib_srq_attr_mask srq_attr_mask,
909 struct ib_udata *udata);
910 int (*query_srq)(struct ib_srq *srq,
911 struct ib_srq_attr *srq_attr);
912 int (*destroy_srq)(struct ib_srq *srq);
913 int (*post_srq_recv)(struct ib_srq *srq,
914 struct ib_recv_wr *recv_wr,
915 struct ib_recv_wr **bad_recv_wr);
916 struct ib_qp * (*create_qp)(struct ib_pd *pd,
917 struct ib_qp_init_attr *qp_init_attr,
918 struct ib_udata *udata);
919 int (*modify_qp)(struct ib_qp *qp,
920 struct ib_qp_attr *qp_attr,
922 struct ib_udata *udata);
923 int (*query_qp)(struct ib_qp *qp,
924 struct ib_qp_attr *qp_attr,
926 struct ib_qp_init_attr *qp_init_attr);
927 int (*destroy_qp)(struct ib_qp *qp);
928 int (*post_send)(struct ib_qp *qp,
929 struct ib_send_wr *send_wr,
930 struct ib_send_wr **bad_send_wr);
931 int (*post_recv)(struct ib_qp *qp,
932 struct ib_recv_wr *recv_wr,
933 struct ib_recv_wr **bad_recv_wr);
934 struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
935 struct ib_ucontext *context,
936 struct ib_udata *udata);
937 int (*destroy_cq)(struct ib_cq *cq);
938 int (*resize_cq)(struct ib_cq *cq, int cqe,
939 struct ib_udata *udata);
940 int (*poll_cq)(struct ib_cq *cq, int num_entries,
942 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
943 int (*req_notify_cq)(struct ib_cq *cq,
944 enum ib_cq_notify cq_notify);
945 int (*req_ncomp_notif)(struct ib_cq *cq,
947 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
948 int mr_access_flags);
949 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
950 struct ib_phys_buf *phys_buf_array,
954 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
955 struct ib_umem *region,
957 struct ib_udata *udata);
958 int (*query_mr)(struct ib_mr *mr,
959 struct ib_mr_attr *mr_attr);
960 int (*dereg_mr)(struct ib_mr *mr);
961 int (*rereg_phys_mr)(struct ib_mr *mr,
964 struct ib_phys_buf *phys_buf_array,
968 struct ib_mw * (*alloc_mw)(struct ib_pd *pd);
969 int (*bind_mw)(struct ib_qp *qp,
971 struct ib_mw_bind *mw_bind);
972 int (*dealloc_mw)(struct ib_mw *mw);
973 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
975 struct ib_fmr_attr *fmr_attr);
976 int (*map_phys_fmr)(struct ib_fmr *fmr,
977 u64 *page_list, int list_len,
979 int (*unmap_fmr)(struct list_head *fmr_list);
980 int (*dealloc_fmr)(struct ib_fmr *fmr);
981 int (*attach_mcast)(struct ib_qp *qp,
984 int (*detach_mcast)(struct ib_qp *qp,
987 int (*process_mad)(struct ib_device *device,
988 int process_mad_flags,
991 struct ib_grh *in_grh,
992 struct ib_mad *in_mad,
993 struct ib_mad *out_mad);
995 struct module *owner;
996 struct class_device class_dev;
997 struct kobject ports_parent;
998 struct list_head port_list;
1001 IB_DEV_UNINITIALIZED,
1006 u64 uverbs_cmd_mask;
1017 void (*add) (struct ib_device *);
1018 void (*remove)(struct ib_device *);
1020 struct list_head list;
1023 struct ib_device *ib_alloc_device(size_t size);
1024 void ib_dealloc_device(struct ib_device *device);
1026 int ib_register_device (struct ib_device *device);
1027 void ib_unregister_device(struct ib_device *device);
1029 int ib_register_client (struct ib_client *client);
1030 void ib_unregister_client(struct ib_client *client);
1032 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
1033 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
1036 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
1038 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
1041 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
1043 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
1047 * ib_modify_qp_is_ok - Check that the supplied attribute mask
1048 * contains all required attributes and no attributes not allowed for
1049 * the given QP state transition.
1050 * @cur_state: Current QP state
1051 * @next_state: Next QP state
1053 * @mask: Mask of supplied QP attributes
1055 * This function is a helper function that a low-level driver's
1056 * modify_qp method can use to validate the consumer's input. It
1057 * checks that cur_state and next_state are valid QP states, that a
1058 * transition from cur_state to next_state is allowed by the IB spec,
1059 * and that the attribute mask supplied is allowed for the transition.
1061 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
1062 enum ib_qp_type type, enum ib_qp_attr_mask mask);
1064 int ib_register_event_handler (struct ib_event_handler *event_handler);
1065 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
1066 void ib_dispatch_event(struct ib_event *event);
1068 int ib_query_device(struct ib_device *device,
1069 struct ib_device_attr *device_attr);
1071 int ib_query_port(struct ib_device *device,
1072 u8 port_num, struct ib_port_attr *port_attr);
1074 int ib_query_gid(struct ib_device *device,
1075 u8 port_num, int index, union ib_gid *gid);
1077 int ib_query_pkey(struct ib_device *device,
1078 u8 port_num, u16 index, u16 *pkey);
1080 int ib_modify_device(struct ib_device *device,
1081 int device_modify_mask,
1082 struct ib_device_modify *device_modify);
1084 int ib_modify_port(struct ib_device *device,
1085 u8 port_num, int port_modify_mask,
1086 struct ib_port_modify *port_modify);
1089 * ib_alloc_pd - Allocates an unused protection domain.
1090 * @device: The device on which to allocate the protection domain.
1092 * A protection domain object provides an association between QPs, shared
1093 * receive queues, address handles, memory regions, and memory windows.
1095 struct ib_pd *ib_alloc_pd(struct ib_device *device);
1098 * ib_dealloc_pd - Deallocates a protection domain.
1099 * @pd: The protection domain to deallocate.
1101 int ib_dealloc_pd(struct ib_pd *pd);
1104 * ib_create_ah - Creates an address handle for the given address vector.
1105 * @pd: The protection domain associated with the address handle.
1106 * @ah_attr: The attributes of the address vector.
1108 * The address handle is used to reference a local or global destination
1109 * in all UD QP post sends.
1111 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
1114 * ib_init_ah_from_wc - Initializes address handle attributes from a
1116 * @device: Device on which the received message arrived.
1117 * @port_num: Port on which the received message arrived.
1118 * @wc: Work completion associated with the received message.
1119 * @grh: References the received global route header. This parameter is
1120 * ignored unless the work completion indicates that the GRH is valid.
1121 * @ah_attr: Returned attributes that can be used when creating an address
1122 * handle for replying to the message.
1124 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
1125 struct ib_grh *grh, struct ib_ah_attr *ah_attr);
1128 * ib_create_ah_from_wc - Creates an address handle associated with the
1129 * sender of the specified work completion.
1130 * @pd: The protection domain associated with the address handle.
1131 * @wc: Work completion information associated with a received message.
1132 * @grh: References the received global route header. This parameter is
1133 * ignored unless the work completion indicates that the GRH is valid.
1134 * @port_num: The outbound port number to associate with the address.
1136 * The address handle is used to reference a local or global destination
1137 * in all UD QP post sends.
1139 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
1140 struct ib_grh *grh, u8 port_num);
1143 * ib_modify_ah - Modifies the address vector associated with an address
1145 * @ah: The address handle to modify.
1146 * @ah_attr: The new address vector attributes to associate with the
1149 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1152 * ib_query_ah - Queries the address vector associated with an address
1154 * @ah: The address handle to query.
1155 * @ah_attr: The address vector attributes associated with the address
1158 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1161 * ib_destroy_ah - Destroys an address handle.
1162 * @ah: The address handle to destroy.
1164 int ib_destroy_ah(struct ib_ah *ah);
1167 * ib_create_srq - Creates a SRQ associated with the specified protection
1169 * @pd: The protection domain associated with the SRQ.
1170 * @srq_init_attr: A list of initial attributes required to create the
1171 * SRQ. If SRQ creation succeeds, then the attributes are updated to
1172 * the actual capabilities of the created SRQ.
1174 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
1175 * requested size of the SRQ, and set to the actual values allocated
1176 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
1177 * will always be at least as large as the requested values.
1179 struct ib_srq *ib_create_srq(struct ib_pd *pd,
1180 struct ib_srq_init_attr *srq_init_attr);
1183 * ib_modify_srq - Modifies the attributes for the specified SRQ.
1184 * @srq: The SRQ to modify.
1185 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
1186 * the current values of selected SRQ attributes are returned.
1187 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
1188 * are being modified.
1190 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
1191 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
1192 * the number of receives queued drops below the limit.
1194 int ib_modify_srq(struct ib_srq *srq,
1195 struct ib_srq_attr *srq_attr,
1196 enum ib_srq_attr_mask srq_attr_mask);
1199 * ib_query_srq - Returns the attribute list and current values for the
1201 * @srq: The SRQ to query.
1202 * @srq_attr: The attributes of the specified SRQ.
1204 int ib_query_srq(struct ib_srq *srq,
1205 struct ib_srq_attr *srq_attr);
1208 * ib_destroy_srq - Destroys the specified SRQ.
1209 * @srq: The SRQ to destroy.
1211 int ib_destroy_srq(struct ib_srq *srq);
1214 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
1215 * @srq: The SRQ to post the work request on.
1216 * @recv_wr: A list of work requests to post on the receive queue.
1217 * @bad_recv_wr: On an immediate failure, this parameter will reference
1218 * the work request that failed to be posted on the QP.
1220 static inline int ib_post_srq_recv(struct ib_srq *srq,
1221 struct ib_recv_wr *recv_wr,
1222 struct ib_recv_wr **bad_recv_wr)
1224 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
1228 * ib_create_qp - Creates a QP associated with the specified protection
1230 * @pd: The protection domain associated with the QP.
1231 * @qp_init_attr: A list of initial attributes required to create the
1232 * QP. If QP creation succeeds, then the attributes are updated to
1233 * the actual capabilities of the created QP.
1235 struct ib_qp *ib_create_qp(struct ib_pd *pd,
1236 struct ib_qp_init_attr *qp_init_attr);
1239 * ib_modify_qp - Modifies the attributes for the specified QP and then
1240 * transitions the QP to the given state.
1241 * @qp: The QP to modify.
1242 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1243 * the current values of selected QP attributes are returned.
1244 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1245 * are being modified.
1247 int ib_modify_qp(struct ib_qp *qp,
1248 struct ib_qp_attr *qp_attr,
1252 * ib_query_qp - Returns the attribute list and current values for the
1254 * @qp: The QP to query.
1255 * @qp_attr: The attributes of the specified QP.
1256 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1257 * @qp_init_attr: Additional attributes of the selected QP.
1259 * The qp_attr_mask may be used to limit the query to gathering only the
1260 * selected attributes.
1262 int ib_query_qp(struct ib_qp *qp,
1263 struct ib_qp_attr *qp_attr,
1265 struct ib_qp_init_attr *qp_init_attr);
1268 * ib_destroy_qp - Destroys the specified QP.
1269 * @qp: The QP to destroy.
1271 int ib_destroy_qp(struct ib_qp *qp);
1274 * ib_post_send - Posts a list of work requests to the send queue of
1276 * @qp: The QP to post the work request on.
1277 * @send_wr: A list of work requests to post on the send queue.
1278 * @bad_send_wr: On an immediate failure, this parameter will reference
1279 * the work request that failed to be posted on the QP.
1281 static inline int ib_post_send(struct ib_qp *qp,
1282 struct ib_send_wr *send_wr,
1283 struct ib_send_wr **bad_send_wr)
1285 return qp->device->post_send(qp, send_wr, bad_send_wr);
1289 * ib_post_recv - Posts a list of work requests to the receive queue of
1291 * @qp: The QP to post the work request on.
1292 * @recv_wr: A list of work requests to post on the receive queue.
1293 * @bad_recv_wr: On an immediate failure, this parameter will reference
1294 * the work request that failed to be posted on the QP.
1296 static inline int ib_post_recv(struct ib_qp *qp,
1297 struct ib_recv_wr *recv_wr,
1298 struct ib_recv_wr **bad_recv_wr)
1300 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
1304 * ib_create_cq - Creates a CQ on the specified device.
1305 * @device: The device on which to create the CQ.
1306 * @comp_handler: A user-specified callback that is invoked when a
1307 * completion event occurs on the CQ.
1308 * @event_handler: A user-specified callback that is invoked when an
1309 * asynchronous event not associated with a completion occurs on the CQ.
1310 * @cq_context: Context associated with the CQ returned to the user via
1311 * the associated completion and event handlers.
1312 * @cqe: The minimum size of the CQ.
1314 * Users can examine the cq structure to determine the actual CQ size.
1316 struct ib_cq *ib_create_cq(struct ib_device *device,
1317 ib_comp_handler comp_handler,
1318 void (*event_handler)(struct ib_event *, void *),
1319 void *cq_context, int cqe);
1322 * ib_resize_cq - Modifies the capacity of the CQ.
1323 * @cq: The CQ to resize.
1324 * @cqe: The minimum size of the CQ.
1326 * Users can examine the cq structure to determine the actual CQ size.
1328 int ib_resize_cq(struct ib_cq *cq, int cqe);
1331 * ib_destroy_cq - Destroys the specified CQ.
1332 * @cq: The CQ to destroy.
1334 int ib_destroy_cq(struct ib_cq *cq);
1337 * ib_poll_cq - poll a CQ for completion(s)
1338 * @cq:the CQ being polled
1339 * @num_entries:maximum number of completions to return
1340 * @wc:array of at least @num_entries &struct ib_wc where completions
1343 * Poll a CQ for (possibly multiple) completions. If the return value
1344 * is < 0, an error occurred. If the return value is >= 0, it is the
1345 * number of completions returned. If the return value is
1346 * non-negative and < num_entries, then the CQ was emptied.
1348 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
1351 return cq->device->poll_cq(cq, num_entries, wc);
1355 * ib_peek_cq - Returns the number of unreaped completions currently
1356 * on the specified CQ.
1357 * @cq: The CQ to peek.
1358 * @wc_cnt: A minimum number of unreaped completions to check for.
1360 * If the number of unreaped completions is greater than or equal to wc_cnt,
1361 * this function returns wc_cnt, otherwise, it returns the actual number of
1362 * unreaped completions.
1364 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
1367 * ib_req_notify_cq - Request completion notification on a CQ.
1368 * @cq: The CQ to generate an event for.
1369 * @cq_notify: If set to %IB_CQ_SOLICITED, completion notification will
1370 * occur on the next solicited event. If set to %IB_CQ_NEXT_COMP,
1371 * notification will occur on the next completion.
1373 static inline int ib_req_notify_cq(struct ib_cq *cq,
1374 enum ib_cq_notify cq_notify)
1376 return cq->device->req_notify_cq(cq, cq_notify);
1380 * ib_req_ncomp_notif - Request completion notification when there are
1381 * at least the specified number of unreaped completions on the CQ.
1382 * @cq: The CQ to generate an event for.
1383 * @wc_cnt: The number of unreaped completions that should be on the
1384 * CQ before an event is generated.
1386 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
1388 return cq->device->req_ncomp_notif ?
1389 cq->device->req_ncomp_notif(cq, wc_cnt) :
1394 * ib_get_dma_mr - Returns a memory region for system memory that is
1396 * @pd: The protection domain associated with the memory region.
1397 * @mr_access_flags: Specifies the memory access rights.
1399 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
1402 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
1404 * @pd: The protection domain associated assigned to the registered region.
1405 * @phys_buf_array: Specifies a list of physical buffers to use in the
1407 * @num_phys_buf: Specifies the size of the phys_buf_array.
1408 * @mr_access_flags: Specifies the memory access rights.
1409 * @iova_start: The offset of the region's starting I/O virtual address.
1411 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
1412 struct ib_phys_buf *phys_buf_array,
1414 int mr_access_flags,
1418 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
1419 * Conceptually, this call performs the functions deregister memory region
1420 * followed by register physical memory region. Where possible,
1421 * resources are reused instead of deallocated and reallocated.
1422 * @mr: The memory region to modify.
1423 * @mr_rereg_mask: A bit-mask used to indicate which of the following
1424 * properties of the memory region are being modified.
1425 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
1426 * the new protection domain to associated with the memory region,
1427 * otherwise, this parameter is ignored.
1428 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1429 * field specifies a list of physical buffers to use in the new
1430 * translation, otherwise, this parameter is ignored.
1431 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1432 * field specifies the size of the phys_buf_array, otherwise, this
1433 * parameter is ignored.
1434 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
1435 * field specifies the new memory access rights, otherwise, this
1436 * parameter is ignored.
1437 * @iova_start: The offset of the region's starting I/O virtual address.
1439 int ib_rereg_phys_mr(struct ib_mr *mr,
1442 struct ib_phys_buf *phys_buf_array,
1444 int mr_access_flags,
1448 * ib_query_mr - Retrieves information about a specific memory region.
1449 * @mr: The memory region to retrieve information about.
1450 * @mr_attr: The attributes of the specified memory region.
1452 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
1455 * ib_dereg_mr - Deregisters a memory region and removes it from the
1456 * HCA translation table.
1457 * @mr: The memory region to deregister.
1459 int ib_dereg_mr(struct ib_mr *mr);
1462 * ib_alloc_mw - Allocates a memory window.
1463 * @pd: The protection domain associated with the memory window.
1465 struct ib_mw *ib_alloc_mw(struct ib_pd *pd);
1468 * ib_bind_mw - Posts a work request to the send queue of the specified
1469 * QP, which binds the memory window to the given address range and
1470 * remote access attributes.
1471 * @qp: QP to post the bind work request on.
1472 * @mw: The memory window to bind.
1473 * @mw_bind: Specifies information about the memory window, including
1474 * its address range, remote access rights, and associated memory region.
1476 static inline int ib_bind_mw(struct ib_qp *qp,
1478 struct ib_mw_bind *mw_bind)
1480 /* XXX reference counting in corresponding MR? */
1481 return mw->device->bind_mw ?
1482 mw->device->bind_mw(qp, mw, mw_bind) :
1487 * ib_dealloc_mw - Deallocates a memory window.
1488 * @mw: The memory window to deallocate.
1490 int ib_dealloc_mw(struct ib_mw *mw);
1493 * ib_alloc_fmr - Allocates a unmapped fast memory region.
1494 * @pd: The protection domain associated with the unmapped region.
1495 * @mr_access_flags: Specifies the memory access rights.
1496 * @fmr_attr: Attributes of the unmapped region.
1498 * A fast memory region must be mapped before it can be used as part of
1501 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1502 int mr_access_flags,
1503 struct ib_fmr_attr *fmr_attr);
1506 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
1507 * @fmr: The fast memory region to associate with the pages.
1508 * @page_list: An array of physical pages to map to the fast memory region.
1509 * @list_len: The number of pages in page_list.
1510 * @iova: The I/O virtual address to use with the mapped region.
1512 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
1513 u64 *page_list, int list_len,
1516 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
1520 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
1521 * @fmr_list: A linked list of fast memory regions to unmap.
1523 int ib_unmap_fmr(struct list_head *fmr_list);
1526 * ib_dealloc_fmr - Deallocates a fast memory region.
1527 * @fmr: The fast memory region to deallocate.
1529 int ib_dealloc_fmr(struct ib_fmr *fmr);
1532 * ib_attach_mcast - Attaches the specified QP to a multicast group.
1533 * @qp: QP to attach to the multicast group. The QP must be type
1535 * @gid: Multicast group GID.
1536 * @lid: Multicast group LID in host byte order.
1538 * In order to send and receive multicast packets, subnet
1539 * administration must have created the multicast group and configured
1540 * the fabric appropriately. The port associated with the specified
1541 * QP must also be a member of the multicast group.
1543 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1546 * ib_detach_mcast - Detaches the specified QP from a multicast group.
1547 * @qp: QP to detach from the multicast group.
1548 * @gid: Multicast group GID.
1549 * @lid: Multicast group LID in host byte order.
1551 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1553 #endif /* IB_VERBS_H */