2 * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2004 Infinicon Corporation. All rights reserved.
4 * Copyright (c) 2004 Intel Corporation. All rights reserved.
5 * Copyright (c) 2004 Topspin Corporation. All rights reserved.
6 * Copyright (c) 2004 Voltaire Corporation. All rights reserved.
7 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
8 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved.
10 * This software is available to you under a choice of one of two
11 * licenses. You may choose to be licensed under the terms of the GNU
12 * General Public License (GPL) Version 2, available from the file
13 * COPYING in the main directory of this source tree, or the
14 * OpenIB.org BSD license below:
16 * Redistribution and use in source and binary forms, with or
17 * without modification, are permitted provided that the following
20 * - Redistributions of source code must retain the above
21 * copyright notice, this list of conditions and the following
24 * - Redistributions in binary form must reproduce the above
25 * copyright notice, this list of conditions and the following
26 * disclaimer in the documentation and/or other materials
27 * provided with the distribution.
29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
30 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
31 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
32 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
33 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
34 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
35 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
39 #if !defined(IB_VERBS_H)
42 #include <linux/types.h>
43 #include <linux/device.h>
45 #include <linux/dma-mapping.h>
46 #include <linux/kref.h>
47 #include <linux/list.h>
48 #include <linux/rwsem.h>
49 #include <linux/scatterlist.h>
50 #include <linux/workqueue.h>
51 #include <linux/socket.h>
52 #include <linux/irq_poll.h>
53 #include <uapi/linux/if_ether.h>
56 #include <linux/string.h>
57 #include <linux/slab.h>
59 #include <linux/if_link.h>
60 #include <linux/atomic.h>
61 #include <linux/mmu_notifier.h>
62 #include <asm/uaccess.h>
64 extern struct workqueue_struct *ib_wq;
65 extern struct workqueue_struct *ib_comp_wq;
75 extern union ib_gid zgid;
78 /* If link layer is Ethernet, this is RoCE V1 */
81 IB_GID_TYPE_ROCE_UDP_ENCAP = 1,
85 #define ROCE_V2_UDP_DPORT 4791
87 enum ib_gid_type gid_type;
88 struct net_device *ndev;
92 /* IB values map to NodeInfo:NodeType. */
102 /* set the local administered indication */
103 IB_SA_WELL_KNOWN_GUID = BIT_ULL(57) | 2,
106 enum rdma_transport_type {
108 RDMA_TRANSPORT_IWARP,
109 RDMA_TRANSPORT_USNIC,
110 RDMA_TRANSPORT_USNIC_UDP
113 enum rdma_protocol_type {
117 RDMA_PROTOCOL_USNIC_UDP
120 __attribute_const__ enum rdma_transport_type
121 rdma_node_get_transport(enum rdma_node_type node_type);
123 enum rdma_network_type {
125 RDMA_NETWORK_ROCE_V1 = RDMA_NETWORK_IB,
130 static inline enum ib_gid_type ib_network_to_gid_type(enum rdma_network_type network_type)
132 if (network_type == RDMA_NETWORK_IPV4 ||
133 network_type == RDMA_NETWORK_IPV6)
134 return IB_GID_TYPE_ROCE_UDP_ENCAP;
136 /* IB_GID_TYPE_IB same as RDMA_NETWORK_ROCE_V1 */
137 return IB_GID_TYPE_IB;
140 static inline enum rdma_network_type ib_gid_to_network_type(enum ib_gid_type gid_type,
143 if (gid_type == IB_GID_TYPE_IB)
144 return RDMA_NETWORK_IB;
146 if (ipv6_addr_v4mapped((struct in6_addr *)gid))
147 return RDMA_NETWORK_IPV4;
149 return RDMA_NETWORK_IPV6;
152 enum rdma_link_layer {
153 IB_LINK_LAYER_UNSPECIFIED,
154 IB_LINK_LAYER_INFINIBAND,
155 IB_LINK_LAYER_ETHERNET,
158 enum ib_device_cap_flags {
159 IB_DEVICE_RESIZE_MAX_WR = (1 << 0),
160 IB_DEVICE_BAD_PKEY_CNTR = (1 << 1),
161 IB_DEVICE_BAD_QKEY_CNTR = (1 << 2),
162 IB_DEVICE_RAW_MULTI = (1 << 3),
163 IB_DEVICE_AUTO_PATH_MIG = (1 << 4),
164 IB_DEVICE_CHANGE_PHY_PORT = (1 << 5),
165 IB_DEVICE_UD_AV_PORT_ENFORCE = (1 << 6),
166 IB_DEVICE_CURR_QP_STATE_MOD = (1 << 7),
167 IB_DEVICE_SHUTDOWN_PORT = (1 << 8),
168 IB_DEVICE_INIT_TYPE = (1 << 9),
169 IB_DEVICE_PORT_ACTIVE_EVENT = (1 << 10),
170 IB_DEVICE_SYS_IMAGE_GUID = (1 << 11),
171 IB_DEVICE_RC_RNR_NAK_GEN = (1 << 12),
172 IB_DEVICE_SRQ_RESIZE = (1 << 13),
173 IB_DEVICE_N_NOTIFY_CQ = (1 << 14),
176 * This device supports a per-device lkey or stag that can be
177 * used without performing a memory registration for the local
178 * memory. Note that ULPs should never check this flag, but
179 * instead of use the local_dma_lkey flag in the ib_pd structure,
180 * which will always contain a usable lkey.
182 IB_DEVICE_LOCAL_DMA_LKEY = (1 << 15),
183 IB_DEVICE_RESERVED /* old SEND_W_INV */ = (1 << 16),
184 IB_DEVICE_MEM_WINDOW = (1 << 17),
186 * Devices should set IB_DEVICE_UD_IP_SUM if they support
187 * insertion of UDP and TCP checksum on outgoing UD IPoIB
188 * messages and can verify the validity of checksum for
189 * incoming messages. Setting this flag implies that the
190 * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
192 IB_DEVICE_UD_IP_CSUM = (1 << 18),
193 IB_DEVICE_UD_TSO = (1 << 19),
194 IB_DEVICE_XRC = (1 << 20),
197 * This device supports the IB "base memory management extension",
198 * which includes support for fast registrations (IB_WR_REG_MR,
199 * IB_WR_LOCAL_INV and IB_WR_SEND_WITH_INV verbs). This flag should
200 * also be set by any iWarp device which must support FRs to comply
201 * to the iWarp verbs spec. iWarp devices also support the
202 * IB_WR_RDMA_READ_WITH_INV verb for RDMA READs that invalidate the
205 IB_DEVICE_MEM_MGT_EXTENSIONS = (1 << 21),
206 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1 << 22),
207 IB_DEVICE_MEM_WINDOW_TYPE_2A = (1 << 23),
208 IB_DEVICE_MEM_WINDOW_TYPE_2B = (1 << 24),
209 IB_DEVICE_RC_IP_CSUM = (1 << 25),
210 IB_DEVICE_RAW_IP_CSUM = (1 << 26),
212 * Devices should set IB_DEVICE_CROSS_CHANNEL if they
213 * support execution of WQEs that involve synchronization
214 * of I/O operations with single completion queue managed
217 IB_DEVICE_CROSS_CHANNEL = (1 << 27),
218 IB_DEVICE_MANAGED_FLOW_STEERING = (1 << 29),
219 IB_DEVICE_SIGNATURE_HANDOVER = (1 << 30),
220 IB_DEVICE_ON_DEMAND_PAGING = (1ULL << 31),
221 IB_DEVICE_SG_GAPS_REG = (1ULL << 32),
222 IB_DEVICE_VIRTUAL_FUNCTION = (1ULL << 33),
223 IB_DEVICE_RAW_SCATTER_FCS = (1ULL << 34),
226 enum ib_signature_prot_cap {
227 IB_PROT_T10DIF_TYPE_1 = 1,
228 IB_PROT_T10DIF_TYPE_2 = 1 << 1,
229 IB_PROT_T10DIF_TYPE_3 = 1 << 2,
232 enum ib_signature_guard_cap {
233 IB_GUARD_T10DIF_CRC = 1,
234 IB_GUARD_T10DIF_CSUM = 1 << 1,
243 enum ib_odp_general_cap_bits {
244 IB_ODP_SUPPORT = 1 << 0,
247 enum ib_odp_transport_cap_bits {
248 IB_ODP_SUPPORT_SEND = 1 << 0,
249 IB_ODP_SUPPORT_RECV = 1 << 1,
250 IB_ODP_SUPPORT_WRITE = 1 << 2,
251 IB_ODP_SUPPORT_READ = 1 << 3,
252 IB_ODP_SUPPORT_ATOMIC = 1 << 4,
256 uint64_t general_caps;
258 uint32_t rc_odp_caps;
259 uint32_t uc_odp_caps;
260 uint32_t ud_odp_caps;
261 } per_transport_caps;
265 /* Corresponding bit will be set if qp type from
266 * 'enum ib_qp_type' is supported, e.g.
267 * supported_qpts |= 1 << IB_QPT_UD
270 u32 max_rwq_indirection_tables;
271 u32 max_rwq_indirection_table_size;
274 enum ib_cq_creation_flags {
275 IB_CQ_FLAGS_TIMESTAMP_COMPLETION = 1 << 0,
276 IB_CQ_FLAGS_IGNORE_OVERRUN = 1 << 1,
279 struct ib_cq_init_attr {
285 struct ib_device_attr {
287 __be64 sys_image_guid;
295 u64 device_cap_flags;
305 int max_qp_init_rd_atom;
306 int max_ee_init_rd_atom;
307 enum ib_atomic_cap atomic_cap;
308 enum ib_atomic_cap masked_atomic_cap;
315 int max_mcast_qp_attach;
316 int max_total_mcast_qp_attach;
323 unsigned int max_fast_reg_page_list_len;
325 u8 local_ca_ack_delay;
328 struct ib_odp_caps odp_caps;
329 uint64_t timestamp_mask;
330 uint64_t hca_core_clock; /* in KHZ */
331 struct ib_rss_caps rss_caps;
343 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
346 case IB_MTU_256: return 256;
347 case IB_MTU_512: return 512;
348 case IB_MTU_1024: return 1024;
349 case IB_MTU_2048: return 2048;
350 case IB_MTU_4096: return 4096;
361 IB_PORT_ACTIVE_DEFER = 5
364 enum ib_port_cap_flags {
366 IB_PORT_NOTICE_SUP = 1 << 2,
367 IB_PORT_TRAP_SUP = 1 << 3,
368 IB_PORT_OPT_IPD_SUP = 1 << 4,
369 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
370 IB_PORT_SL_MAP_SUP = 1 << 6,
371 IB_PORT_MKEY_NVRAM = 1 << 7,
372 IB_PORT_PKEY_NVRAM = 1 << 8,
373 IB_PORT_LED_INFO_SUP = 1 << 9,
374 IB_PORT_SM_DISABLED = 1 << 10,
375 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
376 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
377 IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14,
378 IB_PORT_CM_SUP = 1 << 16,
379 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
380 IB_PORT_REINIT_SUP = 1 << 18,
381 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
382 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
383 IB_PORT_DR_NOTICE_SUP = 1 << 21,
384 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
385 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
386 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
387 IB_PORT_CLIENT_REG_SUP = 1 << 25,
388 IB_PORT_IP_BASED_GIDS = 1 << 26,
398 static inline int ib_width_enum_to_int(enum ib_port_width width)
401 case IB_WIDTH_1X: return 1;
402 case IB_WIDTH_4X: return 4;
403 case IB_WIDTH_8X: return 8;
404 case IB_WIDTH_12X: return 12;
419 * struct rdma_hw_stats
420 * @timestamp - Used by the core code to track when the last update was
421 * @lifespan - Used by the core code to determine how old the counters
422 * should be before being updated again. Stored in jiffies, defaults
423 * to 10 milliseconds, drivers can override the default be specifying
424 * their own value during their allocation routine.
425 * @name - Array of pointers to static names used for the counters in
427 * @num_counters - How many hardware counters there are. If name is
428 * shorter than this number, a kernel oops will result. Driver authors
429 * are encouraged to leave BUILD_BUG_ON(ARRAY_SIZE(@name) < num_counters)
430 * in their code to prevent this.
431 * @value - Array of u64 counters that are accessed by the sysfs code and
432 * filled in by the drivers get_stats routine
434 struct rdma_hw_stats {
435 unsigned long timestamp;
436 unsigned long lifespan;
437 const char * const *names;
442 #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10
444 * rdma_alloc_hw_stats_struct - Helper function to allocate dynamic struct
446 * @names - Array of static const char *
447 * @num_counters - How many elements in array
448 * @lifespan - How many milliseconds between updates
450 static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct(
451 const char * const *names, int num_counters,
452 unsigned long lifespan)
454 struct rdma_hw_stats *stats;
456 stats = kzalloc(sizeof(*stats) + num_counters * sizeof(u64),
460 stats->names = names;
461 stats->num_counters = num_counters;
462 stats->lifespan = msecs_to_jiffies(lifespan);
468 /* Define bits for the various functionality this port needs to be supported by
471 /* Management 0x00000FFF */
472 #define RDMA_CORE_CAP_IB_MAD 0x00000001
473 #define RDMA_CORE_CAP_IB_SMI 0x00000002
474 #define RDMA_CORE_CAP_IB_CM 0x00000004
475 #define RDMA_CORE_CAP_IW_CM 0x00000008
476 #define RDMA_CORE_CAP_IB_SA 0x00000010
477 #define RDMA_CORE_CAP_OPA_MAD 0x00000020
479 /* Address format 0x000FF000 */
480 #define RDMA_CORE_CAP_AF_IB 0x00001000
481 #define RDMA_CORE_CAP_ETH_AH 0x00002000
483 /* Protocol 0xFFF00000 */
484 #define RDMA_CORE_CAP_PROT_IB 0x00100000
485 #define RDMA_CORE_CAP_PROT_ROCE 0x00200000
486 #define RDMA_CORE_CAP_PROT_IWARP 0x00400000
487 #define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000
489 #define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \
490 | RDMA_CORE_CAP_IB_MAD \
491 | RDMA_CORE_CAP_IB_SMI \
492 | RDMA_CORE_CAP_IB_CM \
493 | RDMA_CORE_CAP_IB_SA \
494 | RDMA_CORE_CAP_AF_IB)
495 #define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \
496 | RDMA_CORE_CAP_IB_MAD \
497 | RDMA_CORE_CAP_IB_CM \
498 | RDMA_CORE_CAP_AF_IB \
499 | RDMA_CORE_CAP_ETH_AH)
500 #define RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP \
501 (RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP \
502 | RDMA_CORE_CAP_IB_MAD \
503 | RDMA_CORE_CAP_IB_CM \
504 | RDMA_CORE_CAP_AF_IB \
505 | RDMA_CORE_CAP_ETH_AH)
506 #define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \
507 | RDMA_CORE_CAP_IW_CM)
508 #define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \
509 | RDMA_CORE_CAP_OPA_MAD)
511 struct ib_port_attr {
513 enum ib_port_state state;
515 enum ib_mtu active_mtu;
535 enum ib_device_modify_flags {
536 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
537 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
540 #define IB_DEVICE_NODE_DESC_MAX 64
542 struct ib_device_modify {
544 char node_desc[IB_DEVICE_NODE_DESC_MAX];
547 enum ib_port_modify_flags {
548 IB_PORT_SHUTDOWN = 1,
549 IB_PORT_INIT_TYPE = (1<<2),
550 IB_PORT_RESET_QKEY_CNTR = (1<<3)
553 struct ib_port_modify {
554 u32 set_port_cap_mask;
555 u32 clr_port_cap_mask;
563 IB_EVENT_QP_ACCESS_ERR,
567 IB_EVENT_PATH_MIG_ERR,
568 IB_EVENT_DEVICE_FATAL,
569 IB_EVENT_PORT_ACTIVE,
572 IB_EVENT_PKEY_CHANGE,
575 IB_EVENT_SRQ_LIMIT_REACHED,
576 IB_EVENT_QP_LAST_WQE_REACHED,
577 IB_EVENT_CLIENT_REREGISTER,
582 const char *__attribute_const__ ib_event_msg(enum ib_event_type event);
585 struct ib_device *device;
593 enum ib_event_type event;
596 struct ib_event_handler {
597 struct ib_device *device;
598 void (*handler)(struct ib_event_handler *, struct ib_event *);
599 struct list_head list;
602 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
604 (_ptr)->device = _device; \
605 (_ptr)->handler = _handler; \
606 INIT_LIST_HEAD(&(_ptr)->list); \
609 struct ib_global_route {
618 __be32 version_tclass_flow;
626 union rdma_network_hdr {
629 /* The IB spec states that if it's IPv4, the header
630 * is located in the last 20 bytes of the header.
633 struct iphdr roce4grh;
638 IB_MULTICAST_QPN = 0xffffff
641 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
642 #define IB_MULTICAST_LID_BASE cpu_to_be16(0xC000)
649 IB_RATE_PORT_CURRENT = 0,
650 IB_RATE_2_5_GBPS = 2,
658 IB_RATE_120_GBPS = 10,
659 IB_RATE_14_GBPS = 11,
660 IB_RATE_56_GBPS = 12,
661 IB_RATE_112_GBPS = 13,
662 IB_RATE_168_GBPS = 14,
663 IB_RATE_25_GBPS = 15,
664 IB_RATE_100_GBPS = 16,
665 IB_RATE_200_GBPS = 17,
666 IB_RATE_300_GBPS = 18
670 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
671 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
672 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
673 * @rate: rate to convert.
675 __attribute_const__ int ib_rate_to_mult(enum ib_rate rate);
678 * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
679 * For example, IB_RATE_2_5_GBPS will be converted to 2500.
680 * @rate: rate to convert.
682 __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate);
686 * enum ib_mr_type - memory region type
687 * @IB_MR_TYPE_MEM_REG: memory region that is used for
688 * normal registration
689 * @IB_MR_TYPE_SIGNATURE: memory region that is used for
690 * signature operations (data-integrity
692 * @IB_MR_TYPE_SG_GAPS: memory region that is capable to
693 * register any arbitrary sg lists (without
694 * the normal mr constraints - see
699 IB_MR_TYPE_SIGNATURE,
705 * IB_SIG_TYPE_NONE: Unprotected.
706 * IB_SIG_TYPE_T10_DIF: Type T10-DIF
708 enum ib_signature_type {
714 * Signature T10-DIF block-guard types
715 * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules.
716 * IB_T10DIF_CSUM: Corresponds to IP checksum rules.
718 enum ib_t10_dif_bg_type {
724 * struct ib_t10_dif_domain - Parameters specific for T10-DIF
726 * @bg_type: T10-DIF block guard type (CRC|CSUM)
727 * @pi_interval: protection information interval.
728 * @bg: seed of guard computation.
729 * @app_tag: application tag of guard block
730 * @ref_tag: initial guard block reference tag.
731 * @ref_remap: Indicate wethear the reftag increments each block
732 * @app_escape: Indicate to skip block check if apptag=0xffff
733 * @ref_escape: Indicate to skip block check if reftag=0xffffffff
734 * @apptag_check_mask: check bitmask of application tag.
736 struct ib_t10_dif_domain {
737 enum ib_t10_dif_bg_type bg_type;
745 u16 apptag_check_mask;
749 * struct ib_sig_domain - Parameters for signature domain
750 * @sig_type: specific signauture type
751 * @sig: union of all signature domain attributes that may
752 * be used to set domain layout.
754 struct ib_sig_domain {
755 enum ib_signature_type sig_type;
757 struct ib_t10_dif_domain dif;
762 * struct ib_sig_attrs - Parameters for signature handover operation
763 * @check_mask: bitmask for signature byte check (8 bytes)
764 * @mem: memory domain layout desciptor.
765 * @wire: wire domain layout desciptor.
767 struct ib_sig_attrs {
769 struct ib_sig_domain mem;
770 struct ib_sig_domain wire;
773 enum ib_sig_err_type {
780 * struct ib_sig_err - signature error descriptor
783 enum ib_sig_err_type err_type;
790 enum ib_mr_status_check {
791 IB_MR_CHECK_SIG_STATUS = 1,
795 * struct ib_mr_status - Memory region status container
797 * @fail_status: Bitmask of MR checks status. For each
798 * failed check a corresponding status bit is set.
799 * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS
802 struct ib_mr_status {
804 struct ib_sig_err sig_err;
808 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
810 * @mult: multiple to convert.
812 __attribute_const__ enum ib_rate mult_to_ib_rate(int mult);
815 struct ib_global_route grh;
829 IB_WC_LOC_EEC_OP_ERR,
834 IB_WC_LOC_ACCESS_ERR,
835 IB_WC_REM_INV_REQ_ERR,
836 IB_WC_REM_ACCESS_ERR,
839 IB_WC_RNR_RETRY_EXC_ERR,
840 IB_WC_LOC_RDD_VIOL_ERR,
841 IB_WC_REM_INV_RD_REQ_ERR,
844 IB_WC_INV_EEC_STATE_ERR,
846 IB_WC_RESP_TIMEOUT_ERR,
850 const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status);
861 IB_WC_MASKED_COMP_SWAP,
862 IB_WC_MASKED_FETCH_ADD,
864 * Set value of IB_WC_RECV so consumers can test if a completion is a
865 * receive by testing (opcode & IB_WC_RECV).
868 IB_WC_RECV_RDMA_WITH_IMM
873 IB_WC_WITH_IMM = (1<<1),
874 IB_WC_WITH_INVALIDATE = (1<<2),
875 IB_WC_IP_CSUM_OK = (1<<3),
876 IB_WC_WITH_SMAC = (1<<4),
877 IB_WC_WITH_VLAN = (1<<5),
878 IB_WC_WITH_NETWORK_HDR_TYPE = (1<<6),
884 struct ib_cqe *wr_cqe;
886 enum ib_wc_status status;
887 enum ib_wc_opcode opcode;
901 u8 port_num; /* valid only for DR SMPs on switches */
907 enum ib_cq_notify_flags {
908 IB_CQ_SOLICITED = 1 << 0,
909 IB_CQ_NEXT_COMP = 1 << 1,
910 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
911 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
919 enum ib_srq_attr_mask {
920 IB_SRQ_MAX_WR = 1 << 0,
921 IB_SRQ_LIMIT = 1 << 1,
930 struct ib_srq_init_attr {
931 void (*event_handler)(struct ib_event *, void *);
933 struct ib_srq_attr attr;
934 enum ib_srq_type srq_type;
938 struct ib_xrcd *xrcd;
952 * Maximum number of rdma_rw_ctx structures in flight at a time.
953 * ib_create_qp() will calculate the right amount of neededed WRs
954 * and MRs based on this.
966 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
967 * here (and in that order) since the MAD layer uses them as
968 * indices into a 2-entry table.
977 IB_QPT_RAW_ETHERTYPE,
978 IB_QPT_RAW_PACKET = 8,
982 /* Reserve a range for qp types internal to the low level driver.
983 * These qp types will not be visible at the IB core layer, so the
984 * IB_QPT_MAX usages should not be affected in the core layer
986 IB_QPT_RESERVED1 = 0x1000,
998 enum ib_qp_create_flags {
999 IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0,
1000 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
1001 IB_QP_CREATE_CROSS_CHANNEL = 1 << 2,
1002 IB_QP_CREATE_MANAGED_SEND = 1 << 3,
1003 IB_QP_CREATE_MANAGED_RECV = 1 << 4,
1004 IB_QP_CREATE_NETIF_QP = 1 << 5,
1005 IB_QP_CREATE_SIGNATURE_EN = 1 << 6,
1006 IB_QP_CREATE_USE_GFP_NOIO = 1 << 7,
1007 IB_QP_CREATE_SCATTER_FCS = 1 << 8,
1008 /* reserve bits 26-31 for low level drivers' internal use */
1009 IB_QP_CREATE_RESERVED_START = 1 << 26,
1010 IB_QP_CREATE_RESERVED_END = 1 << 31,
1014 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
1015 * callback to destroy the passed in QP.
1018 struct ib_qp_init_attr {
1019 void (*event_handler)(struct ib_event *, void *);
1021 struct ib_cq *send_cq;
1022 struct ib_cq *recv_cq;
1024 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1025 struct ib_qp_cap cap;
1026 enum ib_sig_type sq_sig_type;
1027 enum ib_qp_type qp_type;
1028 enum ib_qp_create_flags create_flags;
1031 * Only needed for special QP types, or when using the RW API.
1034 struct ib_rwq_ind_table *rwq_ind_tbl;
1037 struct ib_qp_open_attr {
1038 void (*event_handler)(struct ib_event *, void *);
1041 enum ib_qp_type qp_type;
1044 enum ib_rnr_timeout {
1045 IB_RNR_TIMER_655_36 = 0,
1046 IB_RNR_TIMER_000_01 = 1,
1047 IB_RNR_TIMER_000_02 = 2,
1048 IB_RNR_TIMER_000_03 = 3,
1049 IB_RNR_TIMER_000_04 = 4,
1050 IB_RNR_TIMER_000_06 = 5,
1051 IB_RNR_TIMER_000_08 = 6,
1052 IB_RNR_TIMER_000_12 = 7,
1053 IB_RNR_TIMER_000_16 = 8,
1054 IB_RNR_TIMER_000_24 = 9,
1055 IB_RNR_TIMER_000_32 = 10,
1056 IB_RNR_TIMER_000_48 = 11,
1057 IB_RNR_TIMER_000_64 = 12,
1058 IB_RNR_TIMER_000_96 = 13,
1059 IB_RNR_TIMER_001_28 = 14,
1060 IB_RNR_TIMER_001_92 = 15,
1061 IB_RNR_TIMER_002_56 = 16,
1062 IB_RNR_TIMER_003_84 = 17,
1063 IB_RNR_TIMER_005_12 = 18,
1064 IB_RNR_TIMER_007_68 = 19,
1065 IB_RNR_TIMER_010_24 = 20,
1066 IB_RNR_TIMER_015_36 = 21,
1067 IB_RNR_TIMER_020_48 = 22,
1068 IB_RNR_TIMER_030_72 = 23,
1069 IB_RNR_TIMER_040_96 = 24,
1070 IB_RNR_TIMER_061_44 = 25,
1071 IB_RNR_TIMER_081_92 = 26,
1072 IB_RNR_TIMER_122_88 = 27,
1073 IB_RNR_TIMER_163_84 = 28,
1074 IB_RNR_TIMER_245_76 = 29,
1075 IB_RNR_TIMER_327_68 = 30,
1076 IB_RNR_TIMER_491_52 = 31
1079 enum ib_qp_attr_mask {
1081 IB_QP_CUR_STATE = (1<<1),
1082 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
1083 IB_QP_ACCESS_FLAGS = (1<<3),
1084 IB_QP_PKEY_INDEX = (1<<4),
1085 IB_QP_PORT = (1<<5),
1086 IB_QP_QKEY = (1<<6),
1088 IB_QP_PATH_MTU = (1<<8),
1089 IB_QP_TIMEOUT = (1<<9),
1090 IB_QP_RETRY_CNT = (1<<10),
1091 IB_QP_RNR_RETRY = (1<<11),
1092 IB_QP_RQ_PSN = (1<<12),
1093 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
1094 IB_QP_ALT_PATH = (1<<14),
1095 IB_QP_MIN_RNR_TIMER = (1<<15),
1096 IB_QP_SQ_PSN = (1<<16),
1097 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
1098 IB_QP_PATH_MIG_STATE = (1<<18),
1099 IB_QP_CAP = (1<<19),
1100 IB_QP_DEST_QPN = (1<<20),
1101 IB_QP_RESERVED1 = (1<<21),
1102 IB_QP_RESERVED2 = (1<<22),
1103 IB_QP_RESERVED3 = (1<<23),
1104 IB_QP_RESERVED4 = (1<<24),
1129 enum ib_qp_state qp_state;
1130 enum ib_qp_state cur_qp_state;
1131 enum ib_mtu path_mtu;
1132 enum ib_mig_state path_mig_state;
1137 int qp_access_flags;
1138 struct ib_qp_cap cap;
1139 struct ib_ah_attr ah_attr;
1140 struct ib_ah_attr alt_ah_attr;
1143 u8 en_sqd_async_notify;
1146 u8 max_dest_rd_atomic;
1158 IB_WR_RDMA_WRITE_WITH_IMM,
1160 IB_WR_SEND_WITH_IMM,
1162 IB_WR_ATOMIC_CMP_AND_SWP,
1163 IB_WR_ATOMIC_FETCH_AND_ADD,
1165 IB_WR_SEND_WITH_INV,
1166 IB_WR_RDMA_READ_WITH_INV,
1169 IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
1170 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
1172 /* reserve values for low level drivers' internal use.
1173 * These values will not be used at all in the ib core layer.
1175 IB_WR_RESERVED1 = 0xf0,
1187 enum ib_send_flags {
1189 IB_SEND_SIGNALED = (1<<1),
1190 IB_SEND_SOLICITED = (1<<2),
1191 IB_SEND_INLINE = (1<<3),
1192 IB_SEND_IP_CSUM = (1<<4),
1194 /* reserve bits 26-31 for low level drivers' internal use */
1195 IB_SEND_RESERVED_START = (1 << 26),
1196 IB_SEND_RESERVED_END = (1 << 31),
1206 void (*done)(struct ib_cq *cq, struct ib_wc *wc);
1210 struct ib_send_wr *next;
1213 struct ib_cqe *wr_cqe;
1215 struct ib_sge *sg_list;
1217 enum ib_wr_opcode opcode;
1221 u32 invalidate_rkey;
1226 struct ib_send_wr wr;
1231 static inline struct ib_rdma_wr *rdma_wr(struct ib_send_wr *wr)
1233 return container_of(wr, struct ib_rdma_wr, wr);
1236 struct ib_atomic_wr {
1237 struct ib_send_wr wr;
1241 u64 compare_add_mask;
1246 static inline struct ib_atomic_wr *atomic_wr(struct ib_send_wr *wr)
1248 return container_of(wr, struct ib_atomic_wr, wr);
1252 struct ib_send_wr wr;
1259 u16 pkey_index; /* valid for GSI only */
1260 u8 port_num; /* valid for DR SMPs on switch only */
1263 static inline struct ib_ud_wr *ud_wr(struct ib_send_wr *wr)
1265 return container_of(wr, struct ib_ud_wr, wr);
1269 struct ib_send_wr wr;
1275 static inline struct ib_reg_wr *reg_wr(struct ib_send_wr *wr)
1277 return container_of(wr, struct ib_reg_wr, wr);
1280 struct ib_sig_handover_wr {
1281 struct ib_send_wr wr;
1282 struct ib_sig_attrs *sig_attrs;
1283 struct ib_mr *sig_mr;
1285 struct ib_sge *prot;
1288 static inline struct ib_sig_handover_wr *sig_handover_wr(struct ib_send_wr *wr)
1290 return container_of(wr, struct ib_sig_handover_wr, wr);
1294 struct ib_recv_wr *next;
1297 struct ib_cqe *wr_cqe;
1299 struct ib_sge *sg_list;
1303 enum ib_access_flags {
1304 IB_ACCESS_LOCAL_WRITE = 1,
1305 IB_ACCESS_REMOTE_WRITE = (1<<1),
1306 IB_ACCESS_REMOTE_READ = (1<<2),
1307 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
1308 IB_ACCESS_MW_BIND = (1<<4),
1309 IB_ZERO_BASED = (1<<5),
1310 IB_ACCESS_ON_DEMAND = (1<<6),
1314 * XXX: these are apparently used for ->rereg_user_mr, no idea why they
1315 * are hidden here instead of a uapi header!
1317 enum ib_mr_rereg_flags {
1318 IB_MR_REREG_TRANS = 1,
1319 IB_MR_REREG_PD = (1<<1),
1320 IB_MR_REREG_ACCESS = (1<<2),
1321 IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
1324 struct ib_fmr_attr {
1332 struct ib_ucontext {
1333 struct ib_device *device;
1334 struct list_head pd_list;
1335 struct list_head mr_list;
1336 struct list_head mw_list;
1337 struct list_head cq_list;
1338 struct list_head qp_list;
1339 struct list_head srq_list;
1340 struct list_head ah_list;
1341 struct list_head xrcd_list;
1342 struct list_head rule_list;
1343 struct list_head wq_list;
1344 struct list_head rwq_ind_tbl_list;
1348 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1349 struct rb_root umem_tree;
1351 * Protects .umem_rbroot and tree, as well as odp_mrs_count and
1352 * mmu notifiers registration.
1354 struct rw_semaphore umem_rwsem;
1355 void (*invalidate_range)(struct ib_umem *umem,
1356 unsigned long start, unsigned long end);
1358 struct mmu_notifier mn;
1359 atomic_t notifier_count;
1360 /* A list of umems that don't have private mmu notifier counters yet. */
1361 struct list_head no_private_counters;
1367 u64 user_handle; /* handle given to us by userspace */
1368 struct ib_ucontext *context; /* associated user context */
1369 void *object; /* containing object */
1370 struct list_head list; /* link to context's list */
1371 int id; /* index into kernel idr */
1373 struct rw_semaphore mutex; /* protects .live */
1374 struct rcu_head rcu; /* kfree_rcu() overhead */
1379 const void __user *inbuf;
1380 void __user *outbuf;
1388 struct ib_device *device;
1389 struct ib_uobject *uobject;
1390 atomic_t usecnt; /* count all resources */
1392 u32 unsafe_global_rkey;
1395 * Implementation details of the RDMA core, don't use in drivers:
1397 struct ib_mr *__internal_mr;
1401 struct ib_device *device;
1402 atomic_t usecnt; /* count all exposed resources */
1403 struct inode *inode;
1405 struct mutex tgt_qp_mutex;
1406 struct list_head tgt_qp_list;
1410 struct ib_device *device;
1412 struct ib_uobject *uobject;
1415 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
1417 enum ib_poll_context {
1418 IB_POLL_DIRECT, /* caller context, no hw completions */
1419 IB_POLL_SOFTIRQ, /* poll from softirq context */
1420 IB_POLL_WORKQUEUE, /* poll from workqueue */
1424 struct ib_device *device;
1425 struct ib_uobject *uobject;
1426 ib_comp_handler comp_handler;
1427 void (*event_handler)(struct ib_event *, void *);
1430 atomic_t usecnt; /* count number of work queues */
1431 enum ib_poll_context poll_ctx;
1434 struct irq_poll iop;
1435 struct work_struct work;
1440 struct ib_device *device;
1442 struct ib_uobject *uobject;
1443 void (*event_handler)(struct ib_event *, void *);
1445 enum ib_srq_type srq_type;
1450 struct ib_xrcd *xrcd;
1468 struct ib_device *device;
1469 struct ib_uobject *uobject;
1471 void (*event_handler)(struct ib_event *, void *);
1475 enum ib_wq_state state;
1476 enum ib_wq_type wq_type;
1480 struct ib_wq_init_attr {
1482 enum ib_wq_type wq_type;
1486 void (*event_handler)(struct ib_event *, void *);
1489 enum ib_wq_attr_mask {
1490 IB_WQ_STATE = 1 << 0,
1491 IB_WQ_CUR_STATE = 1 << 1,
1495 enum ib_wq_state wq_state;
1496 enum ib_wq_state curr_wq_state;
1499 struct ib_rwq_ind_table {
1500 struct ib_device *device;
1501 struct ib_uobject *uobject;
1504 u32 log_ind_tbl_size;
1505 struct ib_wq **ind_tbl;
1508 struct ib_rwq_ind_table_init_attr {
1509 u32 log_ind_tbl_size;
1510 /* Each entry is a pointer to Receive Work Queue */
1511 struct ib_wq **ind_tbl;
1515 * @max_write_sge: Maximum SGE elements per RDMA WRITE request.
1516 * @max_read_sge: Maximum SGE elements per RDMA READ request.
1519 struct ib_device *device;
1521 struct ib_cq *send_cq;
1522 struct ib_cq *recv_cq;
1525 struct list_head rdma_mrs;
1526 struct list_head sig_mrs;
1528 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1529 struct list_head xrcd_list;
1531 /* count times opened, mcast attaches, flow attaches */
1533 struct list_head open_list;
1534 struct ib_qp *real_qp;
1535 struct ib_uobject *uobject;
1536 void (*event_handler)(struct ib_event *, void *);
1541 enum ib_qp_type qp_type;
1542 struct ib_rwq_ind_table *rwq_ind_tbl;
1546 struct ib_device *device;
1552 unsigned int page_size;
1555 struct ib_uobject *uobject; /* user */
1556 struct list_head qp_entry; /* FR */
1561 struct ib_device *device;
1563 struct ib_uobject *uobject;
1565 enum ib_mw_type type;
1569 struct ib_device *device;
1571 struct list_head list;
1576 /* Supported steering options */
1577 enum ib_flow_attr_type {
1578 /* steering according to rule specifications */
1579 IB_FLOW_ATTR_NORMAL = 0x0,
1580 /* default unicast and multicast rule -
1581 * receive all Eth traffic which isn't steered to any QP
1583 IB_FLOW_ATTR_ALL_DEFAULT = 0x1,
1584 /* default multicast rule -
1585 * receive all Eth multicast traffic which isn't steered to any QP
1587 IB_FLOW_ATTR_MC_DEFAULT = 0x2,
1588 /* sniffer rule - receive all port traffic */
1589 IB_FLOW_ATTR_SNIFFER = 0x3
1592 /* Supported steering header types */
1593 enum ib_flow_spec_type {
1595 IB_FLOW_SPEC_ETH = 0x20,
1596 IB_FLOW_SPEC_IB = 0x22,
1598 IB_FLOW_SPEC_IPV4 = 0x30,
1599 IB_FLOW_SPEC_IPV6 = 0x31,
1601 IB_FLOW_SPEC_TCP = 0x40,
1602 IB_FLOW_SPEC_UDP = 0x41
1604 #define IB_FLOW_SPEC_LAYER_MASK 0xF0
1605 #define IB_FLOW_SPEC_SUPPORT_LAYERS 4
1607 /* Flow steering rule priority is set according to it's domain.
1608 * Lower domain value means higher priority.
1610 enum ib_flow_domain {
1611 IB_FLOW_DOMAIN_USER,
1612 IB_FLOW_DOMAIN_ETHTOOL,
1615 IB_FLOW_DOMAIN_NUM /* Must be last */
1618 enum ib_flow_flags {
1619 IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */
1620 IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 2 /* Must be last */
1623 struct ib_flow_eth_filter {
1632 struct ib_flow_spec_eth {
1633 enum ib_flow_spec_type type;
1635 struct ib_flow_eth_filter val;
1636 struct ib_flow_eth_filter mask;
1639 struct ib_flow_ib_filter {
1646 struct ib_flow_spec_ib {
1647 enum ib_flow_spec_type type;
1649 struct ib_flow_ib_filter val;
1650 struct ib_flow_ib_filter mask;
1653 /* IPv4 header flags */
1654 enum ib_ipv4_flags {
1655 IB_IPV4_DONT_FRAG = 0x2, /* Don't enable packet fragmentation */
1656 IB_IPV4_MORE_FRAG = 0X4 /* For All fragmented packets except the
1657 last have this flag set */
1660 struct ib_flow_ipv4_filter {
1671 struct ib_flow_spec_ipv4 {
1672 enum ib_flow_spec_type type;
1674 struct ib_flow_ipv4_filter val;
1675 struct ib_flow_ipv4_filter mask;
1678 struct ib_flow_ipv6_filter {
1689 struct ib_flow_spec_ipv6 {
1690 enum ib_flow_spec_type type;
1692 struct ib_flow_ipv6_filter val;
1693 struct ib_flow_ipv6_filter mask;
1696 struct ib_flow_tcp_udp_filter {
1703 struct ib_flow_spec_tcp_udp {
1704 enum ib_flow_spec_type type;
1706 struct ib_flow_tcp_udp_filter val;
1707 struct ib_flow_tcp_udp_filter mask;
1710 union ib_flow_spec {
1712 enum ib_flow_spec_type type;
1715 struct ib_flow_spec_eth eth;
1716 struct ib_flow_spec_ib ib;
1717 struct ib_flow_spec_ipv4 ipv4;
1718 struct ib_flow_spec_tcp_udp tcp_udp;
1719 struct ib_flow_spec_ipv6 ipv6;
1722 struct ib_flow_attr {
1723 enum ib_flow_attr_type type;
1729 /* Following are the optional layers according to user request
1730 * struct ib_flow_spec_xxx
1731 * struct ib_flow_spec_yyy
1737 struct ib_uobject *uobject;
1743 enum ib_process_mad_flags {
1744 IB_MAD_IGNORE_MKEY = 1,
1745 IB_MAD_IGNORE_BKEY = 2,
1746 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
1749 enum ib_mad_result {
1750 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
1751 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
1752 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
1753 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
1756 #define IB_DEVICE_NAME_MAX 64
1760 struct ib_event_handler event_handler;
1761 struct ib_pkey_cache **pkey_cache;
1762 struct ib_gid_table **gid_cache;
1766 struct ib_dma_mapping_ops {
1767 int (*mapping_error)(struct ib_device *dev,
1769 u64 (*map_single)(struct ib_device *dev,
1770 void *ptr, size_t size,
1771 enum dma_data_direction direction);
1772 void (*unmap_single)(struct ib_device *dev,
1773 u64 addr, size_t size,
1774 enum dma_data_direction direction);
1775 u64 (*map_page)(struct ib_device *dev,
1776 struct page *page, unsigned long offset,
1778 enum dma_data_direction direction);
1779 void (*unmap_page)(struct ib_device *dev,
1780 u64 addr, size_t size,
1781 enum dma_data_direction direction);
1782 int (*map_sg)(struct ib_device *dev,
1783 struct scatterlist *sg, int nents,
1784 enum dma_data_direction direction);
1785 void (*unmap_sg)(struct ib_device *dev,
1786 struct scatterlist *sg, int nents,
1787 enum dma_data_direction direction);
1788 int (*map_sg_attrs)(struct ib_device *dev,
1789 struct scatterlist *sg, int nents,
1790 enum dma_data_direction direction,
1791 unsigned long attrs);
1792 void (*unmap_sg_attrs)(struct ib_device *dev,
1793 struct scatterlist *sg, int nents,
1794 enum dma_data_direction direction,
1795 unsigned long attrs);
1796 void (*sync_single_for_cpu)(struct ib_device *dev,
1799 enum dma_data_direction dir);
1800 void (*sync_single_for_device)(struct ib_device *dev,
1803 enum dma_data_direction dir);
1804 void *(*alloc_coherent)(struct ib_device *dev,
1808 void (*free_coherent)(struct ib_device *dev,
1809 size_t size, void *cpu_addr,
1815 struct ib_port_immutable {
1823 struct device *dma_device;
1825 char name[IB_DEVICE_NAME_MAX];
1827 struct list_head event_handler_list;
1828 spinlock_t event_handler_lock;
1830 spinlock_t client_data_lock;
1831 struct list_head core_list;
1832 /* Access to the client_data_list is protected by the client_data_lock
1833 * spinlock and the lists_rwsem read-write semaphore */
1834 struct list_head client_data_list;
1836 struct ib_cache cache;
1838 * port_immutable is indexed by port number
1840 struct ib_port_immutable *port_immutable;
1842 int num_comp_vectors;
1844 struct iw_cm_verbs *iwcm;
1847 * alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the
1848 * driver initialized data. The struct is kfree()'ed by the sysfs
1849 * core when the device is removed. A lifespan of -1 in the return
1850 * struct tells the core to set a default lifespan.
1852 struct rdma_hw_stats *(*alloc_hw_stats)(struct ib_device *device,
1855 * get_hw_stats - Fill in the counter value(s) in the stats struct.
1856 * @index - The index in the value array we wish to have updated, or
1857 * num_counters if we want all stats updated
1859 * < 0 - Error, no counters updated
1860 * index - Updated the single counter pointed to by index
1861 * num_counters - Updated all counters (will reset the timestamp
1862 * and prevent further calls for lifespan milliseconds)
1863 * Drivers are allowed to update all counters in leiu of just the
1864 * one given in index at their option
1866 int (*get_hw_stats)(struct ib_device *device,
1867 struct rdma_hw_stats *stats,
1868 u8 port, int index);
1869 int (*query_device)(struct ib_device *device,
1870 struct ib_device_attr *device_attr,
1871 struct ib_udata *udata);
1872 int (*query_port)(struct ib_device *device,
1874 struct ib_port_attr *port_attr);
1875 enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
1877 /* When calling get_netdev, the HW vendor's driver should return the
1878 * net device of device @device at port @port_num or NULL if such
1879 * a net device doesn't exist. The vendor driver should call dev_hold
1880 * on this net device. The HW vendor's device driver must guarantee
1881 * that this function returns NULL before the net device reaches
1882 * NETDEV_UNREGISTER_FINAL state.
1884 struct net_device *(*get_netdev)(struct ib_device *device,
1886 int (*query_gid)(struct ib_device *device,
1887 u8 port_num, int index,
1889 /* When calling add_gid, the HW vendor's driver should
1890 * add the gid of device @device at gid index @index of
1891 * port @port_num to be @gid. Meta-info of that gid (for example,
1892 * the network device related to this gid is available
1893 * at @attr. @context allows the HW vendor driver to store extra
1894 * information together with a GID entry. The HW vendor may allocate
1895 * memory to contain this information and store it in @context when a
1896 * new GID entry is written to. Params are consistent until the next
1897 * call of add_gid or delete_gid. The function should return 0 on
1898 * success or error otherwise. The function could be called
1899 * concurrently for different ports. This function is only called
1900 * when roce_gid_table is used.
1902 int (*add_gid)(struct ib_device *device,
1905 const union ib_gid *gid,
1906 const struct ib_gid_attr *attr,
1908 /* When calling del_gid, the HW vendor's driver should delete the
1909 * gid of device @device at gid index @index of port @port_num.
1910 * Upon the deletion of a GID entry, the HW vendor must free any
1911 * allocated memory. The caller will clear @context afterwards.
1912 * This function is only called when roce_gid_table is used.
1914 int (*del_gid)(struct ib_device *device,
1918 int (*query_pkey)(struct ib_device *device,
1919 u8 port_num, u16 index, u16 *pkey);
1920 int (*modify_device)(struct ib_device *device,
1921 int device_modify_mask,
1922 struct ib_device_modify *device_modify);
1923 int (*modify_port)(struct ib_device *device,
1924 u8 port_num, int port_modify_mask,
1925 struct ib_port_modify *port_modify);
1926 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
1927 struct ib_udata *udata);
1928 int (*dealloc_ucontext)(struct ib_ucontext *context);
1929 int (*mmap)(struct ib_ucontext *context,
1930 struct vm_area_struct *vma);
1931 struct ib_pd * (*alloc_pd)(struct ib_device *device,
1932 struct ib_ucontext *context,
1933 struct ib_udata *udata);
1934 int (*dealloc_pd)(struct ib_pd *pd);
1935 struct ib_ah * (*create_ah)(struct ib_pd *pd,
1936 struct ib_ah_attr *ah_attr);
1937 int (*modify_ah)(struct ib_ah *ah,
1938 struct ib_ah_attr *ah_attr);
1939 int (*query_ah)(struct ib_ah *ah,
1940 struct ib_ah_attr *ah_attr);
1941 int (*destroy_ah)(struct ib_ah *ah);
1942 struct ib_srq * (*create_srq)(struct ib_pd *pd,
1943 struct ib_srq_init_attr *srq_init_attr,
1944 struct ib_udata *udata);
1945 int (*modify_srq)(struct ib_srq *srq,
1946 struct ib_srq_attr *srq_attr,
1947 enum ib_srq_attr_mask srq_attr_mask,
1948 struct ib_udata *udata);
1949 int (*query_srq)(struct ib_srq *srq,
1950 struct ib_srq_attr *srq_attr);
1951 int (*destroy_srq)(struct ib_srq *srq);
1952 int (*post_srq_recv)(struct ib_srq *srq,
1953 struct ib_recv_wr *recv_wr,
1954 struct ib_recv_wr **bad_recv_wr);
1955 struct ib_qp * (*create_qp)(struct ib_pd *pd,
1956 struct ib_qp_init_attr *qp_init_attr,
1957 struct ib_udata *udata);
1958 int (*modify_qp)(struct ib_qp *qp,
1959 struct ib_qp_attr *qp_attr,
1961 struct ib_udata *udata);
1962 int (*query_qp)(struct ib_qp *qp,
1963 struct ib_qp_attr *qp_attr,
1965 struct ib_qp_init_attr *qp_init_attr);
1966 int (*destroy_qp)(struct ib_qp *qp);
1967 int (*post_send)(struct ib_qp *qp,
1968 struct ib_send_wr *send_wr,
1969 struct ib_send_wr **bad_send_wr);
1970 int (*post_recv)(struct ib_qp *qp,
1971 struct ib_recv_wr *recv_wr,
1972 struct ib_recv_wr **bad_recv_wr);
1973 struct ib_cq * (*create_cq)(struct ib_device *device,
1974 const struct ib_cq_init_attr *attr,
1975 struct ib_ucontext *context,
1976 struct ib_udata *udata);
1977 int (*modify_cq)(struct ib_cq *cq, u16 cq_count,
1979 int (*destroy_cq)(struct ib_cq *cq);
1980 int (*resize_cq)(struct ib_cq *cq, int cqe,
1981 struct ib_udata *udata);
1982 int (*poll_cq)(struct ib_cq *cq, int num_entries,
1984 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
1985 int (*req_notify_cq)(struct ib_cq *cq,
1986 enum ib_cq_notify_flags flags);
1987 int (*req_ncomp_notif)(struct ib_cq *cq,
1989 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
1990 int mr_access_flags);
1991 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
1992 u64 start, u64 length,
1994 int mr_access_flags,
1995 struct ib_udata *udata);
1996 int (*rereg_user_mr)(struct ib_mr *mr,
1998 u64 start, u64 length,
2000 int mr_access_flags,
2002 struct ib_udata *udata);
2003 int (*dereg_mr)(struct ib_mr *mr);
2004 struct ib_mr * (*alloc_mr)(struct ib_pd *pd,
2005 enum ib_mr_type mr_type,
2007 int (*map_mr_sg)(struct ib_mr *mr,
2008 struct scatterlist *sg,
2010 unsigned int *sg_offset);
2011 struct ib_mw * (*alloc_mw)(struct ib_pd *pd,
2012 enum ib_mw_type type,
2013 struct ib_udata *udata);
2014 int (*dealloc_mw)(struct ib_mw *mw);
2015 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
2016 int mr_access_flags,
2017 struct ib_fmr_attr *fmr_attr);
2018 int (*map_phys_fmr)(struct ib_fmr *fmr,
2019 u64 *page_list, int list_len,
2021 int (*unmap_fmr)(struct list_head *fmr_list);
2022 int (*dealloc_fmr)(struct ib_fmr *fmr);
2023 int (*attach_mcast)(struct ib_qp *qp,
2026 int (*detach_mcast)(struct ib_qp *qp,
2029 int (*process_mad)(struct ib_device *device,
2030 int process_mad_flags,
2032 const struct ib_wc *in_wc,
2033 const struct ib_grh *in_grh,
2034 const struct ib_mad_hdr *in_mad,
2036 struct ib_mad_hdr *out_mad,
2037 size_t *out_mad_size,
2038 u16 *out_mad_pkey_index);
2039 struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device,
2040 struct ib_ucontext *ucontext,
2041 struct ib_udata *udata);
2042 int (*dealloc_xrcd)(struct ib_xrcd *xrcd);
2043 struct ib_flow * (*create_flow)(struct ib_qp *qp,
2047 int (*destroy_flow)(struct ib_flow *flow_id);
2048 int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
2049 struct ib_mr_status *mr_status);
2050 void (*disassociate_ucontext)(struct ib_ucontext *ibcontext);
2051 void (*drain_rq)(struct ib_qp *qp);
2052 void (*drain_sq)(struct ib_qp *qp);
2053 int (*set_vf_link_state)(struct ib_device *device, int vf, u8 port,
2055 int (*get_vf_config)(struct ib_device *device, int vf, u8 port,
2056 struct ifla_vf_info *ivf);
2057 int (*get_vf_stats)(struct ib_device *device, int vf, u8 port,
2058 struct ifla_vf_stats *stats);
2059 int (*set_vf_guid)(struct ib_device *device, int vf, u8 port, u64 guid,
2061 struct ib_wq * (*create_wq)(struct ib_pd *pd,
2062 struct ib_wq_init_attr *init_attr,
2063 struct ib_udata *udata);
2064 int (*destroy_wq)(struct ib_wq *wq);
2065 int (*modify_wq)(struct ib_wq *wq,
2066 struct ib_wq_attr *attr,
2068 struct ib_udata *udata);
2069 struct ib_rwq_ind_table * (*create_rwq_ind_table)(struct ib_device *device,
2070 struct ib_rwq_ind_table_init_attr *init_attr,
2071 struct ib_udata *udata);
2072 int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table);
2073 struct ib_dma_mapping_ops *dma_ops;
2075 struct module *owner;
2077 struct kobject *ports_parent;
2078 struct list_head port_list;
2081 IB_DEV_UNINITIALIZED,
2087 u64 uverbs_cmd_mask;
2088 u64 uverbs_ex_cmd_mask;
2090 char node_desc[IB_DEVICE_NODE_DESC_MAX];
2096 struct ib_device_attr attrs;
2097 struct attribute_group *hw_stats_ag;
2098 struct rdma_hw_stats *hw_stats;
2101 * The following mandatory functions are used only at device
2102 * registration. Keep functions such as these at the end of this
2103 * structure to avoid cache line misses when accessing struct ib_device
2106 int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *);
2107 void (*get_dev_fw_str)(struct ib_device *, char *str, size_t str_len);
2112 void (*add) (struct ib_device *);
2113 void (*remove)(struct ib_device *, void *client_data);
2115 /* Returns the net_dev belonging to this ib_client and matching the
2117 * @dev: An RDMA device that the net_dev use for communication.
2118 * @port: A physical port number on the RDMA device.
2119 * @pkey: P_Key that the net_dev uses if applicable.
2120 * @gid: A GID that the net_dev uses to communicate.
2121 * @addr: An IP address the net_dev is configured with.
2122 * @client_data: The device's client data set by ib_set_client_data().
2124 * An ib_client that implements a net_dev on top of RDMA devices
2125 * (such as IP over IB) should implement this callback, allowing the
2126 * rdma_cm module to find the right net_dev for a given request.
2128 * The caller is responsible for calling dev_put on the returned
2130 struct net_device *(*get_net_dev_by_params)(
2131 struct ib_device *dev,
2134 const union ib_gid *gid,
2135 const struct sockaddr *addr,
2137 struct list_head list;
2140 struct ib_device *ib_alloc_device(size_t size);
2141 void ib_dealloc_device(struct ib_device *device);
2143 void ib_get_device_fw_str(struct ib_device *device, char *str, size_t str_len);
2145 int ib_register_device(struct ib_device *device,
2146 int (*port_callback)(struct ib_device *,
2147 u8, struct kobject *));
2148 void ib_unregister_device(struct ib_device *device);
2150 int ib_register_client (struct ib_client *client);
2151 void ib_unregister_client(struct ib_client *client);
2153 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
2154 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
2157 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
2159 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
2162 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
2164 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
2167 static inline bool ib_is_udata_cleared(struct ib_udata *udata,
2171 const void __user *p = udata->inbuf + offset;
2175 if (len > USHRT_MAX)
2178 buf = memdup_user(p, len);
2182 ret = !memchr_inv(buf, 0, len);
2188 * ib_modify_qp_is_ok - Check that the supplied attribute mask
2189 * contains all required attributes and no attributes not allowed for
2190 * the given QP state transition.
2191 * @cur_state: Current QP state
2192 * @next_state: Next QP state
2194 * @mask: Mask of supplied QP attributes
2195 * @ll : link layer of port
2197 * This function is a helper function that a low-level driver's
2198 * modify_qp method can use to validate the consumer's input. It
2199 * checks that cur_state and next_state are valid QP states, that a
2200 * transition from cur_state to next_state is allowed by the IB spec,
2201 * and that the attribute mask supplied is allowed for the transition.
2203 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
2204 enum ib_qp_type type, enum ib_qp_attr_mask mask,
2205 enum rdma_link_layer ll);
2207 int ib_register_event_handler (struct ib_event_handler *event_handler);
2208 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
2209 void ib_dispatch_event(struct ib_event *event);
2211 int ib_query_port(struct ib_device *device,
2212 u8 port_num, struct ib_port_attr *port_attr);
2214 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
2218 * rdma_cap_ib_switch - Check if the device is IB switch
2219 * @device: Device to check
2221 * Device driver is responsible for setting is_switch bit on
2222 * in ib_device structure at init time.
2224 * Return: true if the device is IB switch.
2226 static inline bool rdma_cap_ib_switch(const struct ib_device *device)
2228 return device->is_switch;
2232 * rdma_start_port - Return the first valid port number for the device
2235 * @device: Device to be checked
2237 * Return start port number
2239 static inline u8 rdma_start_port(const struct ib_device *device)
2241 return rdma_cap_ib_switch(device) ? 0 : 1;
2245 * rdma_end_port - Return the last valid port number for the device
2248 * @device: Device to be checked
2250 * Return last port number
2252 static inline u8 rdma_end_port(const struct ib_device *device)
2254 return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt;
2257 static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num)
2259 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB;
2262 static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num)
2264 return device->port_immutable[port_num].core_cap_flags &
2265 (RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP);
2268 static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, u8 port_num)
2270 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
2273 static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, u8 port_num)
2275 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE;
2278 static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num)
2280 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP;
2283 static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num)
2285 return rdma_protocol_ib(device, port_num) ||
2286 rdma_protocol_roce(device, port_num);
2290 * rdma_cap_ib_mad - Check if the port of a device supports Infiniband
2291 * Management Datagrams.
2292 * @device: Device to check
2293 * @port_num: Port number to check
2295 * Management Datagrams (MAD) are a required part of the InfiniBand
2296 * specification and are supported on all InfiniBand devices. A slightly
2297 * extended version are also supported on OPA interfaces.
2299 * Return: true if the port supports sending/receiving of MAD packets.
2301 static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num)
2303 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_MAD;
2307 * rdma_cap_opa_mad - Check if the port of device provides support for OPA
2308 * Management Datagrams.
2309 * @device: Device to check
2310 * @port_num: Port number to check
2312 * Intel OmniPath devices extend and/or replace the InfiniBand Management
2313 * datagrams with their own versions. These OPA MADs share many but not all of
2314 * the characteristics of InfiniBand MADs.
2316 * OPA MADs differ in the following ways:
2318 * 1) MADs are variable size up to 2K
2319 * IBTA defined MADs remain fixed at 256 bytes
2320 * 2) OPA SMPs must carry valid PKeys
2321 * 3) OPA SMP packets are a different format
2323 * Return: true if the port supports OPA MAD packet formats.
2325 static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num)
2327 return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD)
2328 == RDMA_CORE_CAP_OPA_MAD;
2332 * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband
2333 * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI).
2334 * @device: Device to check
2335 * @port_num: Port number to check
2337 * Each InfiniBand node is required to provide a Subnet Management Agent
2338 * that the subnet manager can access. Prior to the fabric being fully
2339 * configured by the subnet manager, the SMA is accessed via a well known
2340 * interface called the Subnet Management Interface (SMI). This interface
2341 * uses directed route packets to communicate with the SM to get around the
2342 * chicken and egg problem of the SM needing to know what's on the fabric
2343 * in order to configure the fabric, and needing to configure the fabric in
2344 * order to send packets to the devices on the fabric. These directed
2345 * route packets do not need the fabric fully configured in order to reach
2346 * their destination. The SMI is the only method allowed to send
2347 * directed route packets on an InfiniBand fabric.
2349 * Return: true if the port provides an SMI.
2351 static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num)
2353 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SMI;
2357 * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband
2358 * Communication Manager.
2359 * @device: Device to check
2360 * @port_num: Port number to check
2362 * The InfiniBand Communication Manager is one of many pre-defined General
2363 * Service Agents (GSA) that are accessed via the General Service
2364 * Interface (GSI). It's role is to facilitate establishment of connections
2365 * between nodes as well as other management related tasks for established
2368 * Return: true if the port supports an IB CM (this does not guarantee that
2369 * a CM is actually running however).
2371 static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num)
2373 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_CM;
2377 * rdma_cap_iw_cm - Check if the port of device has the capability IWARP
2378 * Communication Manager.
2379 * @device: Device to check
2380 * @port_num: Port number to check
2382 * Similar to above, but specific to iWARP connections which have a different
2383 * managment protocol than InfiniBand.
2385 * Return: true if the port supports an iWARP CM (this does not guarantee that
2386 * a CM is actually running however).
2388 static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num)
2390 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IW_CM;
2394 * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband
2395 * Subnet Administration.
2396 * @device: Device to check
2397 * @port_num: Port number to check
2399 * An InfiniBand Subnet Administration (SA) service is a pre-defined General
2400 * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand
2401 * fabrics, devices should resolve routes to other hosts by contacting the
2402 * SA to query the proper route.
2404 * Return: true if the port should act as a client to the fabric Subnet
2405 * Administration interface. This does not imply that the SA service is
2408 static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num)
2410 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SA;
2414 * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband
2416 * @device: Device to check
2417 * @port_num: Port number to check
2419 * InfiniBand multicast registration is more complex than normal IPv4 or
2420 * IPv6 multicast registration. Each Host Channel Adapter must register
2421 * with the Subnet Manager when it wishes to join a multicast group. It
2422 * should do so only once regardless of how many queue pairs it subscribes
2423 * to this group. And it should leave the group only after all queue pairs
2424 * attached to the group have been detached.
2426 * Return: true if the port must undertake the additional adminstrative
2427 * overhead of registering/unregistering with the SM and tracking of the
2428 * total number of queue pairs attached to the multicast group.
2430 static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num)
2432 return rdma_cap_ib_sa(device, port_num);
2436 * rdma_cap_af_ib - Check if the port of device has the capability
2437 * Native Infiniband Address.
2438 * @device: Device to check
2439 * @port_num: Port number to check
2441 * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default
2442 * GID. RoCE uses a different mechanism, but still generates a GID via
2443 * a prescribed mechanism and port specific data.
2445 * Return: true if the port uses a GID address to identify devices on the
2448 static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num)
2450 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_AF_IB;
2454 * rdma_cap_eth_ah - Check if the port of device has the capability
2455 * Ethernet Address Handle.
2456 * @device: Device to check
2457 * @port_num: Port number to check
2459 * RoCE is InfiniBand over Ethernet, and it uses a well defined technique
2460 * to fabricate GIDs over Ethernet/IP specific addresses native to the
2461 * port. Normally, packet headers are generated by the sending host
2462 * adapter, but when sending connectionless datagrams, we must manually
2463 * inject the proper headers for the fabric we are communicating over.
2465 * Return: true if we are running as a RoCE port and must force the
2466 * addition of a Global Route Header built from our Ethernet Address
2467 * Handle into our header list for connectionless packets.
2469 static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num)
2471 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_AH;
2475 * rdma_max_mad_size - Return the max MAD size required by this RDMA Port.
2478 * @port_num: Port number
2480 * This MAD size includes the MAD headers and MAD payload. No other headers
2483 * Return the max MAD size required by the Port. Will return 0 if the port
2484 * does not support MADs
2486 static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num)
2488 return device->port_immutable[port_num].max_mad_size;
2492 * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table
2493 * @device: Device to check
2494 * @port_num: Port number to check
2496 * RoCE GID table mechanism manages the various GIDs for a device.
2498 * NOTE: if allocating the port's GID table has failed, this call will still
2499 * return true, but any RoCE GID table API will fail.
2501 * Return: true if the port uses RoCE GID table mechanism in order to manage
2504 static inline bool rdma_cap_roce_gid_table(const struct ib_device *device,
2507 return rdma_protocol_roce(device, port_num) &&
2508 device->add_gid && device->del_gid;
2512 * Check if the device supports READ W/ INVALIDATE.
2514 static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num)
2517 * iWarp drivers must support READ W/ INVALIDATE. No other protocol
2518 * has support for it yet.
2520 return rdma_protocol_iwarp(dev, port_num);
2523 int ib_query_gid(struct ib_device *device,
2524 u8 port_num, int index, union ib_gid *gid,
2525 struct ib_gid_attr *attr);
2527 int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port,
2529 int ib_get_vf_config(struct ib_device *device, int vf, u8 port,
2530 struct ifla_vf_info *info);
2531 int ib_get_vf_stats(struct ib_device *device, int vf, u8 port,
2532 struct ifla_vf_stats *stats);
2533 int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid,
2536 int ib_query_pkey(struct ib_device *device,
2537 u8 port_num, u16 index, u16 *pkey);
2539 int ib_modify_device(struct ib_device *device,
2540 int device_modify_mask,
2541 struct ib_device_modify *device_modify);
2543 int ib_modify_port(struct ib_device *device,
2544 u8 port_num, int port_modify_mask,
2545 struct ib_port_modify *port_modify);
2547 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
2548 enum ib_gid_type gid_type, struct net_device *ndev,
2549 u8 *port_num, u16 *index);
2551 int ib_find_pkey(struct ib_device *device,
2552 u8 port_num, u16 pkey, u16 *index);
2556 * Create a memory registration for all memory in the system and place
2557 * the rkey for it into pd->unsafe_global_rkey. This can be used by
2558 * ULPs to avoid the overhead of dynamic MRs.
2560 * This flag is generally considered unsafe and must only be used in
2561 * extremly trusted environments. Every use of it will log a warning
2562 * in the kernel log.
2564 IB_PD_UNSAFE_GLOBAL_RKEY = 0x01,
2567 struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags,
2568 const char *caller);
2569 #define ib_alloc_pd(device, flags) \
2570 __ib_alloc_pd((device), (flags), __func__)
2571 void ib_dealloc_pd(struct ib_pd *pd);
2574 * ib_create_ah - Creates an address handle for the given address vector.
2575 * @pd: The protection domain associated with the address handle.
2576 * @ah_attr: The attributes of the address vector.
2578 * The address handle is used to reference a local or global destination
2579 * in all UD QP post sends.
2581 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
2584 * ib_init_ah_from_wc - Initializes address handle attributes from a
2586 * @device: Device on which the received message arrived.
2587 * @port_num: Port on which the received message arrived.
2588 * @wc: Work completion associated with the received message.
2589 * @grh: References the received global route header. This parameter is
2590 * ignored unless the work completion indicates that the GRH is valid.
2591 * @ah_attr: Returned attributes that can be used when creating an address
2592 * handle for replying to the message.
2594 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num,
2595 const struct ib_wc *wc, const struct ib_grh *grh,
2596 struct ib_ah_attr *ah_attr);
2599 * ib_create_ah_from_wc - Creates an address handle associated with the
2600 * sender of the specified work completion.
2601 * @pd: The protection domain associated with the address handle.
2602 * @wc: Work completion information associated with a received message.
2603 * @grh: References the received global route header. This parameter is
2604 * ignored unless the work completion indicates that the GRH is valid.
2605 * @port_num: The outbound port number to associate with the address.
2607 * The address handle is used to reference a local or global destination
2608 * in all UD QP post sends.
2610 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc,
2611 const struct ib_grh *grh, u8 port_num);
2614 * ib_modify_ah - Modifies the address vector associated with an address
2616 * @ah: The address handle to modify.
2617 * @ah_attr: The new address vector attributes to associate with the
2620 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
2623 * ib_query_ah - Queries the address vector associated with an address
2625 * @ah: The address handle to query.
2626 * @ah_attr: The address vector attributes associated with the address
2629 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
2632 * ib_destroy_ah - Destroys an address handle.
2633 * @ah: The address handle to destroy.
2635 int ib_destroy_ah(struct ib_ah *ah);
2638 * ib_create_srq - Creates a SRQ associated with the specified protection
2640 * @pd: The protection domain associated with the SRQ.
2641 * @srq_init_attr: A list of initial attributes required to create the
2642 * SRQ. If SRQ creation succeeds, then the attributes are updated to
2643 * the actual capabilities of the created SRQ.
2645 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
2646 * requested size of the SRQ, and set to the actual values allocated
2647 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
2648 * will always be at least as large as the requested values.
2650 struct ib_srq *ib_create_srq(struct ib_pd *pd,
2651 struct ib_srq_init_attr *srq_init_attr);
2654 * ib_modify_srq - Modifies the attributes for the specified SRQ.
2655 * @srq: The SRQ to modify.
2656 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
2657 * the current values of selected SRQ attributes are returned.
2658 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
2659 * are being modified.
2661 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
2662 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
2663 * the number of receives queued drops below the limit.
2665 int ib_modify_srq(struct ib_srq *srq,
2666 struct ib_srq_attr *srq_attr,
2667 enum ib_srq_attr_mask srq_attr_mask);
2670 * ib_query_srq - Returns the attribute list and current values for the
2672 * @srq: The SRQ to query.
2673 * @srq_attr: The attributes of the specified SRQ.
2675 int ib_query_srq(struct ib_srq *srq,
2676 struct ib_srq_attr *srq_attr);
2679 * ib_destroy_srq - Destroys the specified SRQ.
2680 * @srq: The SRQ to destroy.
2682 int ib_destroy_srq(struct ib_srq *srq);
2685 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
2686 * @srq: The SRQ to post the work request on.
2687 * @recv_wr: A list of work requests to post on the receive queue.
2688 * @bad_recv_wr: On an immediate failure, this parameter will reference
2689 * the work request that failed to be posted on the QP.
2691 static inline int ib_post_srq_recv(struct ib_srq *srq,
2692 struct ib_recv_wr *recv_wr,
2693 struct ib_recv_wr **bad_recv_wr)
2695 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
2699 * ib_create_qp - Creates a QP associated with the specified protection
2701 * @pd: The protection domain associated with the QP.
2702 * @qp_init_attr: A list of initial attributes required to create the
2703 * QP. If QP creation succeeds, then the attributes are updated to
2704 * the actual capabilities of the created QP.
2706 struct ib_qp *ib_create_qp(struct ib_pd *pd,
2707 struct ib_qp_init_attr *qp_init_attr);
2710 * ib_modify_qp - Modifies the attributes for the specified QP and then
2711 * transitions the QP to the given state.
2712 * @qp: The QP to modify.
2713 * @qp_attr: On input, specifies the QP attributes to modify. On output,
2714 * the current values of selected QP attributes are returned.
2715 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
2716 * are being modified.
2718 int ib_modify_qp(struct ib_qp *qp,
2719 struct ib_qp_attr *qp_attr,
2723 * ib_query_qp - Returns the attribute list and current values for the
2725 * @qp: The QP to query.
2726 * @qp_attr: The attributes of the specified QP.
2727 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
2728 * @qp_init_attr: Additional attributes of the selected QP.
2730 * The qp_attr_mask may be used to limit the query to gathering only the
2731 * selected attributes.
2733 int ib_query_qp(struct ib_qp *qp,
2734 struct ib_qp_attr *qp_attr,
2736 struct ib_qp_init_attr *qp_init_attr);
2739 * ib_destroy_qp - Destroys the specified QP.
2740 * @qp: The QP to destroy.
2742 int ib_destroy_qp(struct ib_qp *qp);
2745 * ib_open_qp - Obtain a reference to an existing sharable QP.
2746 * @xrcd - XRC domain
2747 * @qp_open_attr: Attributes identifying the QP to open.
2749 * Returns a reference to a sharable QP.
2751 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
2752 struct ib_qp_open_attr *qp_open_attr);
2755 * ib_close_qp - Release an external reference to a QP.
2756 * @qp: The QP handle to release
2758 * The opened QP handle is released by the caller. The underlying
2759 * shared QP is not destroyed until all internal references are released.
2761 int ib_close_qp(struct ib_qp *qp);
2764 * ib_post_send - Posts a list of work requests to the send queue of
2766 * @qp: The QP to post the work request on.
2767 * @send_wr: A list of work requests to post on the send queue.
2768 * @bad_send_wr: On an immediate failure, this parameter will reference
2769 * the work request that failed to be posted on the QP.
2771 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
2772 * error is returned, the QP state shall not be affected,
2773 * ib_post_send() will return an immediate error after queueing any
2774 * earlier work requests in the list.
2776 static inline int ib_post_send(struct ib_qp *qp,
2777 struct ib_send_wr *send_wr,
2778 struct ib_send_wr **bad_send_wr)
2780 return qp->device->post_send(qp, send_wr, bad_send_wr);
2784 * ib_post_recv - Posts a list of work requests to the receive queue of
2786 * @qp: The QP to post the work request on.
2787 * @recv_wr: A list of work requests to post on the receive queue.
2788 * @bad_recv_wr: On an immediate failure, this parameter will reference
2789 * the work request that failed to be posted on the QP.
2791 static inline int ib_post_recv(struct ib_qp *qp,
2792 struct ib_recv_wr *recv_wr,
2793 struct ib_recv_wr **bad_recv_wr)
2795 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
2798 struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private,
2799 int nr_cqe, int comp_vector, enum ib_poll_context poll_ctx);
2800 void ib_free_cq(struct ib_cq *cq);
2801 int ib_process_cq_direct(struct ib_cq *cq, int budget);
2804 * ib_create_cq - Creates a CQ on the specified device.
2805 * @device: The device on which to create the CQ.
2806 * @comp_handler: A user-specified callback that is invoked when a
2807 * completion event occurs on the CQ.
2808 * @event_handler: A user-specified callback that is invoked when an
2809 * asynchronous event not associated with a completion occurs on the CQ.
2810 * @cq_context: Context associated with the CQ returned to the user via
2811 * the associated completion and event handlers.
2812 * @cq_attr: The attributes the CQ should be created upon.
2814 * Users can examine the cq structure to determine the actual CQ size.
2816 struct ib_cq *ib_create_cq(struct ib_device *device,
2817 ib_comp_handler comp_handler,
2818 void (*event_handler)(struct ib_event *, void *),
2820 const struct ib_cq_init_attr *cq_attr);
2823 * ib_resize_cq - Modifies the capacity of the CQ.
2824 * @cq: The CQ to resize.
2825 * @cqe: The minimum size of the CQ.
2827 * Users can examine the cq structure to determine the actual CQ size.
2829 int ib_resize_cq(struct ib_cq *cq, int cqe);
2832 * ib_modify_cq - Modifies moderation params of the CQ
2833 * @cq: The CQ to modify.
2834 * @cq_count: number of CQEs that will trigger an event
2835 * @cq_period: max period of time in usec before triggering an event
2838 int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
2841 * ib_destroy_cq - Destroys the specified CQ.
2842 * @cq: The CQ to destroy.
2844 int ib_destroy_cq(struct ib_cq *cq);
2847 * ib_poll_cq - poll a CQ for completion(s)
2848 * @cq:the CQ being polled
2849 * @num_entries:maximum number of completions to return
2850 * @wc:array of at least @num_entries &struct ib_wc where completions
2853 * Poll a CQ for (possibly multiple) completions. If the return value
2854 * is < 0, an error occurred. If the return value is >= 0, it is the
2855 * number of completions returned. If the return value is
2856 * non-negative and < num_entries, then the CQ was emptied.
2858 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
2861 return cq->device->poll_cq(cq, num_entries, wc);
2865 * ib_peek_cq - Returns the number of unreaped completions currently
2866 * on the specified CQ.
2867 * @cq: The CQ to peek.
2868 * @wc_cnt: A minimum number of unreaped completions to check for.
2870 * If the number of unreaped completions is greater than or equal to wc_cnt,
2871 * this function returns wc_cnt, otherwise, it returns the actual number of
2872 * unreaped completions.
2874 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
2877 * ib_req_notify_cq - Request completion notification on a CQ.
2878 * @cq: The CQ to generate an event for.
2880 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
2881 * to request an event on the next solicited event or next work
2882 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
2883 * may also be |ed in to request a hint about missed events, as
2887 * < 0 means an error occurred while requesting notification
2888 * == 0 means notification was requested successfully, and if
2889 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
2890 * were missed and it is safe to wait for another event. In
2891 * this case is it guaranteed that any work completions added
2892 * to the CQ since the last CQ poll will trigger a completion
2893 * notification event.
2894 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
2895 * in. It means that the consumer must poll the CQ again to
2896 * make sure it is empty to avoid missing an event because of a
2897 * race between requesting notification and an entry being
2898 * added to the CQ. This return value means it is possible
2899 * (but not guaranteed) that a work completion has been added
2900 * to the CQ since the last poll without triggering a
2901 * completion notification event.
2903 static inline int ib_req_notify_cq(struct ib_cq *cq,
2904 enum ib_cq_notify_flags flags)
2906 return cq->device->req_notify_cq(cq, flags);
2910 * ib_req_ncomp_notif - Request completion notification when there are
2911 * at least the specified number of unreaped completions on the CQ.
2912 * @cq: The CQ to generate an event for.
2913 * @wc_cnt: The number of unreaped completions that should be on the
2914 * CQ before an event is generated.
2916 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
2918 return cq->device->req_ncomp_notif ?
2919 cq->device->req_ncomp_notif(cq, wc_cnt) :
2924 * ib_dma_mapping_error - check a DMA addr for error
2925 * @dev: The device for which the dma_addr was created
2926 * @dma_addr: The DMA address to check
2928 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
2931 return dev->dma_ops->mapping_error(dev, dma_addr);
2932 return dma_mapping_error(dev->dma_device, dma_addr);
2936 * ib_dma_map_single - Map a kernel virtual address to DMA address
2937 * @dev: The device for which the dma_addr is to be created
2938 * @cpu_addr: The kernel virtual address
2939 * @size: The size of the region in bytes
2940 * @direction: The direction of the DMA
2942 static inline u64 ib_dma_map_single(struct ib_device *dev,
2943 void *cpu_addr, size_t size,
2944 enum dma_data_direction direction)
2947 return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
2948 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
2952 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
2953 * @dev: The device for which the DMA address was created
2954 * @addr: The DMA address
2955 * @size: The size of the region in bytes
2956 * @direction: The direction of the DMA
2958 static inline void ib_dma_unmap_single(struct ib_device *dev,
2959 u64 addr, size_t size,
2960 enum dma_data_direction direction)
2963 dev->dma_ops->unmap_single(dev, addr, size, direction);
2965 dma_unmap_single(dev->dma_device, addr, size, direction);
2968 static inline u64 ib_dma_map_single_attrs(struct ib_device *dev,
2969 void *cpu_addr, size_t size,
2970 enum dma_data_direction direction,
2971 unsigned long dma_attrs)
2973 return dma_map_single_attrs(dev->dma_device, cpu_addr, size,
2974 direction, dma_attrs);
2977 static inline void ib_dma_unmap_single_attrs(struct ib_device *dev,
2978 u64 addr, size_t size,
2979 enum dma_data_direction direction,
2980 unsigned long dma_attrs)
2982 return dma_unmap_single_attrs(dev->dma_device, addr, size,
2983 direction, dma_attrs);
2987 * ib_dma_map_page - Map a physical page to DMA address
2988 * @dev: The device for which the dma_addr is to be created
2989 * @page: The page to be mapped
2990 * @offset: The offset within the page
2991 * @size: The size of the region in bytes
2992 * @direction: The direction of the DMA
2994 static inline u64 ib_dma_map_page(struct ib_device *dev,
2996 unsigned long offset,
2998 enum dma_data_direction direction)
3001 return dev->dma_ops->map_page(dev, page, offset, size, direction);
3002 return dma_map_page(dev->dma_device, page, offset, size, direction);
3006 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
3007 * @dev: The device for which the DMA address was created
3008 * @addr: The DMA address
3009 * @size: The size of the region in bytes
3010 * @direction: The direction of the DMA
3012 static inline void ib_dma_unmap_page(struct ib_device *dev,
3013 u64 addr, size_t size,
3014 enum dma_data_direction direction)
3017 dev->dma_ops->unmap_page(dev, addr, size, direction);
3019 dma_unmap_page(dev->dma_device, addr, size, direction);
3023 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
3024 * @dev: The device for which the DMA addresses are to be created
3025 * @sg: The array of scatter/gather entries
3026 * @nents: The number of scatter/gather entries
3027 * @direction: The direction of the DMA
3029 static inline int ib_dma_map_sg(struct ib_device *dev,
3030 struct scatterlist *sg, int nents,
3031 enum dma_data_direction direction)
3034 return dev->dma_ops->map_sg(dev, sg, nents, direction);
3035 return dma_map_sg(dev->dma_device, sg, nents, direction);
3039 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
3040 * @dev: The device for which the DMA addresses were created
3041 * @sg: The array of scatter/gather entries
3042 * @nents: The number of scatter/gather entries
3043 * @direction: The direction of the DMA
3045 static inline void ib_dma_unmap_sg(struct ib_device *dev,
3046 struct scatterlist *sg, int nents,
3047 enum dma_data_direction direction)
3050 dev->dma_ops->unmap_sg(dev, sg, nents, direction);
3052 dma_unmap_sg(dev->dma_device, sg, nents, direction);
3055 static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
3056 struct scatterlist *sg, int nents,
3057 enum dma_data_direction direction,
3058 unsigned long dma_attrs)
3061 return dev->dma_ops->map_sg_attrs(dev, sg, nents, direction,
3064 return dma_map_sg_attrs(dev->dma_device, sg, nents, direction,
3068 static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
3069 struct scatterlist *sg, int nents,
3070 enum dma_data_direction direction,
3071 unsigned long dma_attrs)
3074 return dev->dma_ops->unmap_sg_attrs(dev, sg, nents, direction,
3077 dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction,
3081 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
3082 * @dev: The device for which the DMA addresses were created
3083 * @sg: The scatter/gather entry
3085 * Note: this function is obsolete. To do: change all occurrences of
3086 * ib_sg_dma_address() into sg_dma_address().
3088 static inline u64 ib_sg_dma_address(struct ib_device *dev,
3089 struct scatterlist *sg)
3091 return sg_dma_address(sg);
3095 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
3096 * @dev: The device for which the DMA addresses were created
3097 * @sg: The scatter/gather entry
3099 * Note: this function is obsolete. To do: change all occurrences of
3100 * ib_sg_dma_len() into sg_dma_len().
3102 static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
3103 struct scatterlist *sg)
3105 return sg_dma_len(sg);
3109 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
3110 * @dev: The device for which the DMA address was created
3111 * @addr: The DMA address
3112 * @size: The size of the region in bytes
3113 * @dir: The direction of the DMA
3115 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
3118 enum dma_data_direction dir)
3121 dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
3123 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
3127 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
3128 * @dev: The device for which the DMA address was created
3129 * @addr: The DMA address
3130 * @size: The size of the region in bytes
3131 * @dir: The direction of the DMA
3133 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
3136 enum dma_data_direction dir)
3139 dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
3141 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
3145 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
3146 * @dev: The device for which the DMA address is requested
3147 * @size: The size of the region to allocate in bytes
3148 * @dma_handle: A pointer for returning the DMA address of the region
3149 * @flag: memory allocator flags
3151 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
3157 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
3162 ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
3163 *dma_handle = handle;
3169 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
3170 * @dev: The device for which the DMA addresses were allocated
3171 * @size: The size of the region
3172 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
3173 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
3175 static inline void ib_dma_free_coherent(struct ib_device *dev,
3176 size_t size, void *cpu_addr,
3180 dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
3182 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
3186 * ib_dereg_mr - Deregisters a memory region and removes it from the
3187 * HCA translation table.
3188 * @mr: The memory region to deregister.
3190 * This function can fail, if the memory region has memory windows bound to it.
3192 int ib_dereg_mr(struct ib_mr *mr);
3194 struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
3195 enum ib_mr_type mr_type,
3199 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
3201 * @mr - struct ib_mr pointer to be updated.
3202 * @newkey - new key to be used.
3204 static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey)
3206 mr->lkey = (mr->lkey & 0xffffff00) | newkey;
3207 mr->rkey = (mr->rkey & 0xffffff00) | newkey;
3211 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
3212 * for calculating a new rkey for type 2 memory windows.
3213 * @rkey - the rkey to increment.
3215 static inline u32 ib_inc_rkey(u32 rkey)
3217 const u32 mask = 0x000000ff;
3218 return ((rkey + 1) & mask) | (rkey & ~mask);
3222 * ib_alloc_fmr - Allocates a unmapped fast memory region.
3223 * @pd: The protection domain associated with the unmapped region.
3224 * @mr_access_flags: Specifies the memory access rights.
3225 * @fmr_attr: Attributes of the unmapped region.
3227 * A fast memory region must be mapped before it can be used as part of
3230 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
3231 int mr_access_flags,
3232 struct ib_fmr_attr *fmr_attr);
3235 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
3236 * @fmr: The fast memory region to associate with the pages.
3237 * @page_list: An array of physical pages to map to the fast memory region.
3238 * @list_len: The number of pages in page_list.
3239 * @iova: The I/O virtual address to use with the mapped region.
3241 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
3242 u64 *page_list, int list_len,
3245 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
3249 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
3250 * @fmr_list: A linked list of fast memory regions to unmap.
3252 int ib_unmap_fmr(struct list_head *fmr_list);
3255 * ib_dealloc_fmr - Deallocates a fast memory region.
3256 * @fmr: The fast memory region to deallocate.
3258 int ib_dealloc_fmr(struct ib_fmr *fmr);
3261 * ib_attach_mcast - Attaches the specified QP to a multicast group.
3262 * @qp: QP to attach to the multicast group. The QP must be type
3264 * @gid: Multicast group GID.
3265 * @lid: Multicast group LID in host byte order.
3267 * In order to send and receive multicast packets, subnet
3268 * administration must have created the multicast group and configured
3269 * the fabric appropriately. The port associated with the specified
3270 * QP must also be a member of the multicast group.
3272 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
3275 * ib_detach_mcast - Detaches the specified QP from a multicast group.
3276 * @qp: QP to detach from the multicast group.
3277 * @gid: Multicast group GID.
3278 * @lid: Multicast group LID in host byte order.
3280 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
3283 * ib_alloc_xrcd - Allocates an XRC domain.
3284 * @device: The device on which to allocate the XRC domain.
3286 struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device);
3289 * ib_dealloc_xrcd - Deallocates an XRC domain.
3290 * @xrcd: The XRC domain to deallocate.
3292 int ib_dealloc_xrcd(struct ib_xrcd *xrcd);
3294 struct ib_flow *ib_create_flow(struct ib_qp *qp,
3295 struct ib_flow_attr *flow_attr, int domain);
3296 int ib_destroy_flow(struct ib_flow *flow_id);
3298 static inline int ib_check_mr_access(int flags)
3301 * Local write permission is required if remote write or
3302 * remote atomic permission is also requested.
3304 if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
3305 !(flags & IB_ACCESS_LOCAL_WRITE))
3312 * ib_check_mr_status: lightweight check of MR status.
3313 * This routine may provide status checks on a selected
3314 * ib_mr. first use is for signature status check.
3316 * @mr: A memory region.
3317 * @check_mask: Bitmask of which checks to perform from
3318 * ib_mr_status_check enumeration.
3319 * @mr_status: The container of relevant status checks.
3320 * failed checks will be indicated in the status bitmask
3321 * and the relevant info shall be in the error item.
3323 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
3324 struct ib_mr_status *mr_status);
3326 struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port,
3327 u16 pkey, const union ib_gid *gid,
3328 const struct sockaddr *addr);
3329 struct ib_wq *ib_create_wq(struct ib_pd *pd,
3330 struct ib_wq_init_attr *init_attr);
3331 int ib_destroy_wq(struct ib_wq *wq);
3332 int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *attr,
3334 struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device,
3335 struct ib_rwq_ind_table_init_attr*
3336 wq_ind_table_init_attr);
3337 int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);
3339 int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
3340 unsigned int *sg_offset, unsigned int page_size);
3343 ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
3344 unsigned int *sg_offset, unsigned int page_size)
3348 n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size);
3354 int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents,
3355 unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64));
3357 void ib_drain_rq(struct ib_qp *qp);
3358 void ib_drain_sq(struct ib_qp *qp);
3359 void ib_drain_qp(struct ib_qp *qp);
3360 #endif /* IB_VERBS_H */