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;
264 enum ib_cq_creation_flags {
265 IB_CQ_FLAGS_TIMESTAMP_COMPLETION = 1 << 0,
266 IB_CQ_FLAGS_IGNORE_OVERRUN = 1 << 1,
269 struct ib_cq_init_attr {
275 struct ib_device_attr {
277 __be64 sys_image_guid;
285 u64 device_cap_flags;
295 int max_qp_init_rd_atom;
296 int max_ee_init_rd_atom;
297 enum ib_atomic_cap atomic_cap;
298 enum ib_atomic_cap masked_atomic_cap;
305 int max_mcast_qp_attach;
306 int max_total_mcast_qp_attach;
313 unsigned int max_fast_reg_page_list_len;
315 u8 local_ca_ack_delay;
318 struct ib_odp_caps odp_caps;
319 uint64_t timestamp_mask;
320 uint64_t hca_core_clock; /* in KHZ */
331 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
334 case IB_MTU_256: return 256;
335 case IB_MTU_512: return 512;
336 case IB_MTU_1024: return 1024;
337 case IB_MTU_2048: return 2048;
338 case IB_MTU_4096: return 4096;
349 IB_PORT_ACTIVE_DEFER = 5
352 enum ib_port_cap_flags {
354 IB_PORT_NOTICE_SUP = 1 << 2,
355 IB_PORT_TRAP_SUP = 1 << 3,
356 IB_PORT_OPT_IPD_SUP = 1 << 4,
357 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
358 IB_PORT_SL_MAP_SUP = 1 << 6,
359 IB_PORT_MKEY_NVRAM = 1 << 7,
360 IB_PORT_PKEY_NVRAM = 1 << 8,
361 IB_PORT_LED_INFO_SUP = 1 << 9,
362 IB_PORT_SM_DISABLED = 1 << 10,
363 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
364 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
365 IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14,
366 IB_PORT_CM_SUP = 1 << 16,
367 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
368 IB_PORT_REINIT_SUP = 1 << 18,
369 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
370 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
371 IB_PORT_DR_NOTICE_SUP = 1 << 21,
372 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
373 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
374 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
375 IB_PORT_CLIENT_REG_SUP = 1 << 25,
376 IB_PORT_IP_BASED_GIDS = 1 << 26,
386 static inline int ib_width_enum_to_int(enum ib_port_width width)
389 case IB_WIDTH_1X: return 1;
390 case IB_WIDTH_4X: return 4;
391 case IB_WIDTH_8X: return 8;
392 case IB_WIDTH_12X: return 12;
407 * struct rdma_hw_stats
408 * @timestamp - Used by the core code to track when the last update was
409 * @lifespan - Used by the core code to determine how old the counters
410 * should be before being updated again. Stored in jiffies, defaults
411 * to 10 milliseconds, drivers can override the default be specifying
412 * their own value during their allocation routine.
413 * @name - Array of pointers to static names used for the counters in
415 * @num_counters - How many hardware counters there are. If name is
416 * shorter than this number, a kernel oops will result. Driver authors
417 * are encouraged to leave BUILD_BUG_ON(ARRAY_SIZE(@name) < num_counters)
418 * in their code to prevent this.
419 * @value - Array of u64 counters that are accessed by the sysfs code and
420 * filled in by the drivers get_stats routine
422 struct rdma_hw_stats {
423 unsigned long timestamp;
424 unsigned long lifespan;
425 const char * const *names;
430 #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10
432 * rdma_alloc_hw_stats_struct - Helper function to allocate dynamic struct
434 * @names - Array of static const char *
435 * @num_counters - How many elements in array
436 * @lifespan - How many milliseconds between updates
438 static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct(
439 const char * const *names, int num_counters,
440 unsigned long lifespan)
442 struct rdma_hw_stats *stats;
444 stats = kzalloc(sizeof(*stats) + num_counters * sizeof(u64),
448 stats->names = names;
449 stats->num_counters = num_counters;
450 stats->lifespan = msecs_to_jiffies(lifespan);
456 /* Define bits for the various functionality this port needs to be supported by
459 /* Management 0x00000FFF */
460 #define RDMA_CORE_CAP_IB_MAD 0x00000001
461 #define RDMA_CORE_CAP_IB_SMI 0x00000002
462 #define RDMA_CORE_CAP_IB_CM 0x00000004
463 #define RDMA_CORE_CAP_IW_CM 0x00000008
464 #define RDMA_CORE_CAP_IB_SA 0x00000010
465 #define RDMA_CORE_CAP_OPA_MAD 0x00000020
467 /* Address format 0x000FF000 */
468 #define RDMA_CORE_CAP_AF_IB 0x00001000
469 #define RDMA_CORE_CAP_ETH_AH 0x00002000
471 /* Protocol 0xFFF00000 */
472 #define RDMA_CORE_CAP_PROT_IB 0x00100000
473 #define RDMA_CORE_CAP_PROT_ROCE 0x00200000
474 #define RDMA_CORE_CAP_PROT_IWARP 0x00400000
475 #define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000
477 #define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \
478 | RDMA_CORE_CAP_IB_MAD \
479 | RDMA_CORE_CAP_IB_SMI \
480 | RDMA_CORE_CAP_IB_CM \
481 | RDMA_CORE_CAP_IB_SA \
482 | RDMA_CORE_CAP_AF_IB)
483 #define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \
484 | RDMA_CORE_CAP_IB_MAD \
485 | RDMA_CORE_CAP_IB_CM \
486 | RDMA_CORE_CAP_AF_IB \
487 | RDMA_CORE_CAP_ETH_AH)
488 #define RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP \
489 (RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP \
490 | RDMA_CORE_CAP_IB_MAD \
491 | RDMA_CORE_CAP_IB_CM \
492 | RDMA_CORE_CAP_AF_IB \
493 | RDMA_CORE_CAP_ETH_AH)
494 #define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \
495 | RDMA_CORE_CAP_IW_CM)
496 #define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \
497 | RDMA_CORE_CAP_OPA_MAD)
499 struct ib_port_attr {
501 enum ib_port_state state;
503 enum ib_mtu active_mtu;
523 enum ib_device_modify_flags {
524 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
525 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
528 struct ib_device_modify {
533 enum ib_port_modify_flags {
534 IB_PORT_SHUTDOWN = 1,
535 IB_PORT_INIT_TYPE = (1<<2),
536 IB_PORT_RESET_QKEY_CNTR = (1<<3)
539 struct ib_port_modify {
540 u32 set_port_cap_mask;
541 u32 clr_port_cap_mask;
549 IB_EVENT_QP_ACCESS_ERR,
553 IB_EVENT_PATH_MIG_ERR,
554 IB_EVENT_DEVICE_FATAL,
555 IB_EVENT_PORT_ACTIVE,
558 IB_EVENT_PKEY_CHANGE,
561 IB_EVENT_SRQ_LIMIT_REACHED,
562 IB_EVENT_QP_LAST_WQE_REACHED,
563 IB_EVENT_CLIENT_REREGISTER,
568 const char *__attribute_const__ ib_event_msg(enum ib_event_type event);
571 struct ib_device *device;
579 enum ib_event_type event;
582 struct ib_event_handler {
583 struct ib_device *device;
584 void (*handler)(struct ib_event_handler *, struct ib_event *);
585 struct list_head list;
588 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
590 (_ptr)->device = _device; \
591 (_ptr)->handler = _handler; \
592 INIT_LIST_HEAD(&(_ptr)->list); \
595 struct ib_global_route {
604 __be32 version_tclass_flow;
612 union rdma_network_hdr {
615 /* The IB spec states that if it's IPv4, the header
616 * is located in the last 20 bytes of the header.
619 struct iphdr roce4grh;
624 IB_MULTICAST_QPN = 0xffffff
627 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
628 #define IB_MULTICAST_LID_BASE cpu_to_be16(0xC000)
635 IB_RATE_PORT_CURRENT = 0,
636 IB_RATE_2_5_GBPS = 2,
644 IB_RATE_120_GBPS = 10,
645 IB_RATE_14_GBPS = 11,
646 IB_RATE_56_GBPS = 12,
647 IB_RATE_112_GBPS = 13,
648 IB_RATE_168_GBPS = 14,
649 IB_RATE_25_GBPS = 15,
650 IB_RATE_100_GBPS = 16,
651 IB_RATE_200_GBPS = 17,
652 IB_RATE_300_GBPS = 18
656 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
657 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
658 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
659 * @rate: rate to convert.
661 __attribute_const__ int ib_rate_to_mult(enum ib_rate rate);
664 * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
665 * For example, IB_RATE_2_5_GBPS will be converted to 2500.
666 * @rate: rate to convert.
668 __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate);
672 * enum ib_mr_type - memory region type
673 * @IB_MR_TYPE_MEM_REG: memory region that is used for
674 * normal registration
675 * @IB_MR_TYPE_SIGNATURE: memory region that is used for
676 * signature operations (data-integrity
678 * @IB_MR_TYPE_SG_GAPS: memory region that is capable to
679 * register any arbitrary sg lists (without
680 * the normal mr constraints - see
685 IB_MR_TYPE_SIGNATURE,
691 * IB_SIG_TYPE_NONE: Unprotected.
692 * IB_SIG_TYPE_T10_DIF: Type T10-DIF
694 enum ib_signature_type {
700 * Signature T10-DIF block-guard types
701 * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules.
702 * IB_T10DIF_CSUM: Corresponds to IP checksum rules.
704 enum ib_t10_dif_bg_type {
710 * struct ib_t10_dif_domain - Parameters specific for T10-DIF
712 * @bg_type: T10-DIF block guard type (CRC|CSUM)
713 * @pi_interval: protection information interval.
714 * @bg: seed of guard computation.
715 * @app_tag: application tag of guard block
716 * @ref_tag: initial guard block reference tag.
717 * @ref_remap: Indicate wethear the reftag increments each block
718 * @app_escape: Indicate to skip block check if apptag=0xffff
719 * @ref_escape: Indicate to skip block check if reftag=0xffffffff
720 * @apptag_check_mask: check bitmask of application tag.
722 struct ib_t10_dif_domain {
723 enum ib_t10_dif_bg_type bg_type;
731 u16 apptag_check_mask;
735 * struct ib_sig_domain - Parameters for signature domain
736 * @sig_type: specific signauture type
737 * @sig: union of all signature domain attributes that may
738 * be used to set domain layout.
740 struct ib_sig_domain {
741 enum ib_signature_type sig_type;
743 struct ib_t10_dif_domain dif;
748 * struct ib_sig_attrs - Parameters for signature handover operation
749 * @check_mask: bitmask for signature byte check (8 bytes)
750 * @mem: memory domain layout desciptor.
751 * @wire: wire domain layout desciptor.
753 struct ib_sig_attrs {
755 struct ib_sig_domain mem;
756 struct ib_sig_domain wire;
759 enum ib_sig_err_type {
766 * struct ib_sig_err - signature error descriptor
769 enum ib_sig_err_type err_type;
776 enum ib_mr_status_check {
777 IB_MR_CHECK_SIG_STATUS = 1,
781 * struct ib_mr_status - Memory region status container
783 * @fail_status: Bitmask of MR checks status. For each
784 * failed check a corresponding status bit is set.
785 * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS
788 struct ib_mr_status {
790 struct ib_sig_err sig_err;
794 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
796 * @mult: multiple to convert.
798 __attribute_const__ enum ib_rate mult_to_ib_rate(int mult);
801 struct ib_global_route grh;
815 IB_WC_LOC_EEC_OP_ERR,
820 IB_WC_LOC_ACCESS_ERR,
821 IB_WC_REM_INV_REQ_ERR,
822 IB_WC_REM_ACCESS_ERR,
825 IB_WC_RNR_RETRY_EXC_ERR,
826 IB_WC_LOC_RDD_VIOL_ERR,
827 IB_WC_REM_INV_RD_REQ_ERR,
830 IB_WC_INV_EEC_STATE_ERR,
832 IB_WC_RESP_TIMEOUT_ERR,
836 const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status);
847 IB_WC_MASKED_COMP_SWAP,
848 IB_WC_MASKED_FETCH_ADD,
850 * Set value of IB_WC_RECV so consumers can test if a completion is a
851 * receive by testing (opcode & IB_WC_RECV).
854 IB_WC_RECV_RDMA_WITH_IMM
859 IB_WC_WITH_IMM = (1<<1),
860 IB_WC_WITH_INVALIDATE = (1<<2),
861 IB_WC_IP_CSUM_OK = (1<<3),
862 IB_WC_WITH_SMAC = (1<<4),
863 IB_WC_WITH_VLAN = (1<<5),
864 IB_WC_WITH_NETWORK_HDR_TYPE = (1<<6),
870 struct ib_cqe *wr_cqe;
872 enum ib_wc_status status;
873 enum ib_wc_opcode opcode;
887 u8 port_num; /* valid only for DR SMPs on switches */
893 enum ib_cq_notify_flags {
894 IB_CQ_SOLICITED = 1 << 0,
895 IB_CQ_NEXT_COMP = 1 << 1,
896 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
897 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
905 enum ib_srq_attr_mask {
906 IB_SRQ_MAX_WR = 1 << 0,
907 IB_SRQ_LIMIT = 1 << 1,
916 struct ib_srq_init_attr {
917 void (*event_handler)(struct ib_event *, void *);
919 struct ib_srq_attr attr;
920 enum ib_srq_type srq_type;
924 struct ib_xrcd *xrcd;
938 * Maximum number of rdma_rw_ctx structures in flight at a time.
939 * ib_create_qp() will calculate the right amount of neededed WRs
940 * and MRs based on this.
952 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
953 * here (and in that order) since the MAD layer uses them as
954 * indices into a 2-entry table.
963 IB_QPT_RAW_ETHERTYPE,
964 IB_QPT_RAW_PACKET = 8,
968 /* Reserve a range for qp types internal to the low level driver.
969 * These qp types will not be visible at the IB core layer, so the
970 * IB_QPT_MAX usages should not be affected in the core layer
972 IB_QPT_RESERVED1 = 0x1000,
984 enum ib_qp_create_flags {
985 IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0,
986 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
987 IB_QP_CREATE_CROSS_CHANNEL = 1 << 2,
988 IB_QP_CREATE_MANAGED_SEND = 1 << 3,
989 IB_QP_CREATE_MANAGED_RECV = 1 << 4,
990 IB_QP_CREATE_NETIF_QP = 1 << 5,
991 IB_QP_CREATE_SIGNATURE_EN = 1 << 6,
992 IB_QP_CREATE_USE_GFP_NOIO = 1 << 7,
993 IB_QP_CREATE_SCATTER_FCS = 1 << 8,
994 /* reserve bits 26-31 for low level drivers' internal use */
995 IB_QP_CREATE_RESERVED_START = 1 << 26,
996 IB_QP_CREATE_RESERVED_END = 1 << 31,
1000 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
1001 * callback to destroy the passed in QP.
1004 struct ib_qp_init_attr {
1005 void (*event_handler)(struct ib_event *, void *);
1007 struct ib_cq *send_cq;
1008 struct ib_cq *recv_cq;
1010 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1011 struct ib_qp_cap cap;
1012 enum ib_sig_type sq_sig_type;
1013 enum ib_qp_type qp_type;
1014 enum ib_qp_create_flags create_flags;
1017 * Only needed for special QP types, or when using the RW API.
1020 struct ib_rwq_ind_table *rwq_ind_tbl;
1023 struct ib_qp_open_attr {
1024 void (*event_handler)(struct ib_event *, void *);
1027 enum ib_qp_type qp_type;
1030 enum ib_rnr_timeout {
1031 IB_RNR_TIMER_655_36 = 0,
1032 IB_RNR_TIMER_000_01 = 1,
1033 IB_RNR_TIMER_000_02 = 2,
1034 IB_RNR_TIMER_000_03 = 3,
1035 IB_RNR_TIMER_000_04 = 4,
1036 IB_RNR_TIMER_000_06 = 5,
1037 IB_RNR_TIMER_000_08 = 6,
1038 IB_RNR_TIMER_000_12 = 7,
1039 IB_RNR_TIMER_000_16 = 8,
1040 IB_RNR_TIMER_000_24 = 9,
1041 IB_RNR_TIMER_000_32 = 10,
1042 IB_RNR_TIMER_000_48 = 11,
1043 IB_RNR_TIMER_000_64 = 12,
1044 IB_RNR_TIMER_000_96 = 13,
1045 IB_RNR_TIMER_001_28 = 14,
1046 IB_RNR_TIMER_001_92 = 15,
1047 IB_RNR_TIMER_002_56 = 16,
1048 IB_RNR_TIMER_003_84 = 17,
1049 IB_RNR_TIMER_005_12 = 18,
1050 IB_RNR_TIMER_007_68 = 19,
1051 IB_RNR_TIMER_010_24 = 20,
1052 IB_RNR_TIMER_015_36 = 21,
1053 IB_RNR_TIMER_020_48 = 22,
1054 IB_RNR_TIMER_030_72 = 23,
1055 IB_RNR_TIMER_040_96 = 24,
1056 IB_RNR_TIMER_061_44 = 25,
1057 IB_RNR_TIMER_081_92 = 26,
1058 IB_RNR_TIMER_122_88 = 27,
1059 IB_RNR_TIMER_163_84 = 28,
1060 IB_RNR_TIMER_245_76 = 29,
1061 IB_RNR_TIMER_327_68 = 30,
1062 IB_RNR_TIMER_491_52 = 31
1065 enum ib_qp_attr_mask {
1067 IB_QP_CUR_STATE = (1<<1),
1068 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
1069 IB_QP_ACCESS_FLAGS = (1<<3),
1070 IB_QP_PKEY_INDEX = (1<<4),
1071 IB_QP_PORT = (1<<5),
1072 IB_QP_QKEY = (1<<6),
1074 IB_QP_PATH_MTU = (1<<8),
1075 IB_QP_TIMEOUT = (1<<9),
1076 IB_QP_RETRY_CNT = (1<<10),
1077 IB_QP_RNR_RETRY = (1<<11),
1078 IB_QP_RQ_PSN = (1<<12),
1079 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
1080 IB_QP_ALT_PATH = (1<<14),
1081 IB_QP_MIN_RNR_TIMER = (1<<15),
1082 IB_QP_SQ_PSN = (1<<16),
1083 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
1084 IB_QP_PATH_MIG_STATE = (1<<18),
1085 IB_QP_CAP = (1<<19),
1086 IB_QP_DEST_QPN = (1<<20),
1087 IB_QP_RESERVED1 = (1<<21),
1088 IB_QP_RESERVED2 = (1<<22),
1089 IB_QP_RESERVED3 = (1<<23),
1090 IB_QP_RESERVED4 = (1<<24),
1115 enum ib_qp_state qp_state;
1116 enum ib_qp_state cur_qp_state;
1117 enum ib_mtu path_mtu;
1118 enum ib_mig_state path_mig_state;
1123 int qp_access_flags;
1124 struct ib_qp_cap cap;
1125 struct ib_ah_attr ah_attr;
1126 struct ib_ah_attr alt_ah_attr;
1129 u8 en_sqd_async_notify;
1132 u8 max_dest_rd_atomic;
1144 IB_WR_RDMA_WRITE_WITH_IMM,
1146 IB_WR_SEND_WITH_IMM,
1148 IB_WR_ATOMIC_CMP_AND_SWP,
1149 IB_WR_ATOMIC_FETCH_AND_ADD,
1151 IB_WR_SEND_WITH_INV,
1152 IB_WR_RDMA_READ_WITH_INV,
1155 IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
1156 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
1158 /* reserve values for low level drivers' internal use.
1159 * These values will not be used at all in the ib core layer.
1161 IB_WR_RESERVED1 = 0xf0,
1173 enum ib_send_flags {
1175 IB_SEND_SIGNALED = (1<<1),
1176 IB_SEND_SOLICITED = (1<<2),
1177 IB_SEND_INLINE = (1<<3),
1178 IB_SEND_IP_CSUM = (1<<4),
1180 /* reserve bits 26-31 for low level drivers' internal use */
1181 IB_SEND_RESERVED_START = (1 << 26),
1182 IB_SEND_RESERVED_END = (1 << 31),
1192 void (*done)(struct ib_cq *cq, struct ib_wc *wc);
1196 struct ib_send_wr *next;
1199 struct ib_cqe *wr_cqe;
1201 struct ib_sge *sg_list;
1203 enum ib_wr_opcode opcode;
1207 u32 invalidate_rkey;
1212 struct ib_send_wr wr;
1217 static inline struct ib_rdma_wr *rdma_wr(struct ib_send_wr *wr)
1219 return container_of(wr, struct ib_rdma_wr, wr);
1222 struct ib_atomic_wr {
1223 struct ib_send_wr wr;
1227 u64 compare_add_mask;
1232 static inline struct ib_atomic_wr *atomic_wr(struct ib_send_wr *wr)
1234 return container_of(wr, struct ib_atomic_wr, wr);
1238 struct ib_send_wr wr;
1245 u16 pkey_index; /* valid for GSI only */
1246 u8 port_num; /* valid for DR SMPs on switch only */
1249 static inline struct ib_ud_wr *ud_wr(struct ib_send_wr *wr)
1251 return container_of(wr, struct ib_ud_wr, wr);
1255 struct ib_send_wr wr;
1261 static inline struct ib_reg_wr *reg_wr(struct ib_send_wr *wr)
1263 return container_of(wr, struct ib_reg_wr, wr);
1266 struct ib_sig_handover_wr {
1267 struct ib_send_wr wr;
1268 struct ib_sig_attrs *sig_attrs;
1269 struct ib_mr *sig_mr;
1271 struct ib_sge *prot;
1274 static inline struct ib_sig_handover_wr *sig_handover_wr(struct ib_send_wr *wr)
1276 return container_of(wr, struct ib_sig_handover_wr, wr);
1280 struct ib_recv_wr *next;
1283 struct ib_cqe *wr_cqe;
1285 struct ib_sge *sg_list;
1289 enum ib_access_flags {
1290 IB_ACCESS_LOCAL_WRITE = 1,
1291 IB_ACCESS_REMOTE_WRITE = (1<<1),
1292 IB_ACCESS_REMOTE_READ = (1<<2),
1293 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
1294 IB_ACCESS_MW_BIND = (1<<4),
1295 IB_ZERO_BASED = (1<<5),
1296 IB_ACCESS_ON_DEMAND = (1<<6),
1300 * XXX: these are apparently used for ->rereg_user_mr, no idea why they
1301 * are hidden here instead of a uapi header!
1303 enum ib_mr_rereg_flags {
1304 IB_MR_REREG_TRANS = 1,
1305 IB_MR_REREG_PD = (1<<1),
1306 IB_MR_REREG_ACCESS = (1<<2),
1307 IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
1310 struct ib_fmr_attr {
1318 struct ib_ucontext {
1319 struct ib_device *device;
1320 struct list_head pd_list;
1321 struct list_head mr_list;
1322 struct list_head mw_list;
1323 struct list_head cq_list;
1324 struct list_head qp_list;
1325 struct list_head srq_list;
1326 struct list_head ah_list;
1327 struct list_head xrcd_list;
1328 struct list_head rule_list;
1329 struct list_head wq_list;
1330 struct list_head rwq_ind_tbl_list;
1334 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1335 struct rb_root umem_tree;
1337 * Protects .umem_rbroot and tree, as well as odp_mrs_count and
1338 * mmu notifiers registration.
1340 struct rw_semaphore umem_rwsem;
1341 void (*invalidate_range)(struct ib_umem *umem,
1342 unsigned long start, unsigned long end);
1344 struct mmu_notifier mn;
1345 atomic_t notifier_count;
1346 /* A list of umems that don't have private mmu notifier counters yet. */
1347 struct list_head no_private_counters;
1353 u64 user_handle; /* handle given to us by userspace */
1354 struct ib_ucontext *context; /* associated user context */
1355 void *object; /* containing object */
1356 struct list_head list; /* link to context's list */
1357 int id; /* index into kernel idr */
1359 struct rw_semaphore mutex; /* protects .live */
1360 struct rcu_head rcu; /* kfree_rcu() overhead */
1365 const void __user *inbuf;
1366 void __user *outbuf;
1373 struct ib_device *device;
1374 struct ib_uobject *uobject;
1375 atomic_t usecnt; /* count all resources */
1376 struct ib_mr *local_mr;
1380 struct ib_device *device;
1381 atomic_t usecnt; /* count all exposed resources */
1382 struct inode *inode;
1384 struct mutex tgt_qp_mutex;
1385 struct list_head tgt_qp_list;
1389 struct ib_device *device;
1391 struct ib_uobject *uobject;
1394 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
1396 enum ib_poll_context {
1397 IB_POLL_DIRECT, /* caller context, no hw completions */
1398 IB_POLL_SOFTIRQ, /* poll from softirq context */
1399 IB_POLL_WORKQUEUE, /* poll from workqueue */
1403 struct ib_device *device;
1404 struct ib_uobject *uobject;
1405 ib_comp_handler comp_handler;
1406 void (*event_handler)(struct ib_event *, void *);
1409 atomic_t usecnt; /* count number of work queues */
1410 enum ib_poll_context poll_ctx;
1413 struct irq_poll iop;
1414 struct work_struct work;
1419 struct ib_device *device;
1421 struct ib_uobject *uobject;
1422 void (*event_handler)(struct ib_event *, void *);
1424 enum ib_srq_type srq_type;
1429 struct ib_xrcd *xrcd;
1447 struct ib_device *device;
1448 struct ib_uobject *uobject;
1450 void (*event_handler)(struct ib_event *, void *);
1454 enum ib_wq_state state;
1455 enum ib_wq_type wq_type;
1459 struct ib_wq_init_attr {
1461 enum ib_wq_type wq_type;
1465 void (*event_handler)(struct ib_event *, void *);
1468 enum ib_wq_attr_mask {
1469 IB_WQ_STATE = 1 << 0,
1470 IB_WQ_CUR_STATE = 1 << 1,
1474 enum ib_wq_state wq_state;
1475 enum ib_wq_state curr_wq_state;
1478 struct ib_rwq_ind_table {
1479 struct ib_device *device;
1480 struct ib_uobject *uobject;
1483 u32 log_ind_tbl_size;
1484 struct ib_wq **ind_tbl;
1487 struct ib_rwq_ind_table_init_attr {
1488 u32 log_ind_tbl_size;
1489 /* Each entry is a pointer to Receive Work Queue */
1490 struct ib_wq **ind_tbl;
1494 struct ib_device *device;
1496 struct ib_cq *send_cq;
1497 struct ib_cq *recv_cq;
1500 struct list_head rdma_mrs;
1501 struct list_head sig_mrs;
1503 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1504 struct list_head xrcd_list;
1506 /* count times opened, mcast attaches, flow attaches */
1508 struct list_head open_list;
1509 struct ib_qp *real_qp;
1510 struct ib_uobject *uobject;
1511 void (*event_handler)(struct ib_event *, void *);
1514 enum ib_qp_type qp_type;
1515 struct ib_rwq_ind_table *rwq_ind_tbl;
1519 struct ib_device *device;
1525 unsigned int page_size;
1528 struct ib_uobject *uobject; /* user */
1529 struct list_head qp_entry; /* FR */
1534 struct ib_device *device;
1536 struct ib_uobject *uobject;
1538 enum ib_mw_type type;
1542 struct ib_device *device;
1544 struct list_head list;
1549 /* Supported steering options */
1550 enum ib_flow_attr_type {
1551 /* steering according to rule specifications */
1552 IB_FLOW_ATTR_NORMAL = 0x0,
1553 /* default unicast and multicast rule -
1554 * receive all Eth traffic which isn't steered to any QP
1556 IB_FLOW_ATTR_ALL_DEFAULT = 0x1,
1557 /* default multicast rule -
1558 * receive all Eth multicast traffic which isn't steered to any QP
1560 IB_FLOW_ATTR_MC_DEFAULT = 0x2,
1561 /* sniffer rule - receive all port traffic */
1562 IB_FLOW_ATTR_SNIFFER = 0x3
1565 /* Supported steering header types */
1566 enum ib_flow_spec_type {
1568 IB_FLOW_SPEC_ETH = 0x20,
1569 IB_FLOW_SPEC_IB = 0x22,
1571 IB_FLOW_SPEC_IPV4 = 0x30,
1572 IB_FLOW_SPEC_IPV6 = 0x31,
1574 IB_FLOW_SPEC_TCP = 0x40,
1575 IB_FLOW_SPEC_UDP = 0x41
1577 #define IB_FLOW_SPEC_LAYER_MASK 0xF0
1578 #define IB_FLOW_SPEC_SUPPORT_LAYERS 4
1580 /* Flow steering rule priority is set according to it's domain.
1581 * Lower domain value means higher priority.
1583 enum ib_flow_domain {
1584 IB_FLOW_DOMAIN_USER,
1585 IB_FLOW_DOMAIN_ETHTOOL,
1588 IB_FLOW_DOMAIN_NUM /* Must be last */
1591 enum ib_flow_flags {
1592 IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */
1593 IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 2 /* Must be last */
1596 struct ib_flow_eth_filter {
1603 struct ib_flow_spec_eth {
1604 enum ib_flow_spec_type type;
1606 struct ib_flow_eth_filter val;
1607 struct ib_flow_eth_filter mask;
1610 struct ib_flow_ib_filter {
1615 struct ib_flow_spec_ib {
1616 enum ib_flow_spec_type type;
1618 struct ib_flow_ib_filter val;
1619 struct ib_flow_ib_filter mask;
1622 struct ib_flow_ipv4_filter {
1627 struct ib_flow_spec_ipv4 {
1628 enum ib_flow_spec_type type;
1630 struct ib_flow_ipv4_filter val;
1631 struct ib_flow_ipv4_filter mask;
1634 struct ib_flow_ipv6_filter {
1639 struct ib_flow_spec_ipv6 {
1640 enum ib_flow_spec_type type;
1642 struct ib_flow_ipv6_filter val;
1643 struct ib_flow_ipv6_filter mask;
1646 struct ib_flow_tcp_udp_filter {
1651 struct ib_flow_spec_tcp_udp {
1652 enum ib_flow_spec_type type;
1654 struct ib_flow_tcp_udp_filter val;
1655 struct ib_flow_tcp_udp_filter mask;
1658 union ib_flow_spec {
1660 enum ib_flow_spec_type type;
1663 struct ib_flow_spec_eth eth;
1664 struct ib_flow_spec_ib ib;
1665 struct ib_flow_spec_ipv4 ipv4;
1666 struct ib_flow_spec_tcp_udp tcp_udp;
1667 struct ib_flow_spec_ipv6 ipv6;
1670 struct ib_flow_attr {
1671 enum ib_flow_attr_type type;
1677 /* Following are the optional layers according to user request
1678 * struct ib_flow_spec_xxx
1679 * struct ib_flow_spec_yyy
1685 struct ib_uobject *uobject;
1691 enum ib_process_mad_flags {
1692 IB_MAD_IGNORE_MKEY = 1,
1693 IB_MAD_IGNORE_BKEY = 2,
1694 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
1697 enum ib_mad_result {
1698 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
1699 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
1700 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
1701 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
1704 #define IB_DEVICE_NAME_MAX 64
1708 struct ib_event_handler event_handler;
1709 struct ib_pkey_cache **pkey_cache;
1710 struct ib_gid_table **gid_cache;
1714 struct ib_dma_mapping_ops {
1715 int (*mapping_error)(struct ib_device *dev,
1717 u64 (*map_single)(struct ib_device *dev,
1718 void *ptr, size_t size,
1719 enum dma_data_direction direction);
1720 void (*unmap_single)(struct ib_device *dev,
1721 u64 addr, size_t size,
1722 enum dma_data_direction direction);
1723 u64 (*map_page)(struct ib_device *dev,
1724 struct page *page, unsigned long offset,
1726 enum dma_data_direction direction);
1727 void (*unmap_page)(struct ib_device *dev,
1728 u64 addr, size_t size,
1729 enum dma_data_direction direction);
1730 int (*map_sg)(struct ib_device *dev,
1731 struct scatterlist *sg, int nents,
1732 enum dma_data_direction direction);
1733 void (*unmap_sg)(struct ib_device *dev,
1734 struct scatterlist *sg, int nents,
1735 enum dma_data_direction direction);
1736 void (*sync_single_for_cpu)(struct ib_device *dev,
1739 enum dma_data_direction dir);
1740 void (*sync_single_for_device)(struct ib_device *dev,
1743 enum dma_data_direction dir);
1744 void *(*alloc_coherent)(struct ib_device *dev,
1748 void (*free_coherent)(struct ib_device *dev,
1749 size_t size, void *cpu_addr,
1755 struct ib_port_immutable {
1763 struct device *dma_device;
1765 char name[IB_DEVICE_NAME_MAX];
1767 struct list_head event_handler_list;
1768 spinlock_t event_handler_lock;
1770 spinlock_t client_data_lock;
1771 struct list_head core_list;
1772 /* Access to the client_data_list is protected by the client_data_lock
1773 * spinlock and the lists_rwsem read-write semaphore */
1774 struct list_head client_data_list;
1776 struct ib_cache cache;
1778 * port_immutable is indexed by port number
1780 struct ib_port_immutable *port_immutable;
1782 int num_comp_vectors;
1784 struct iw_cm_verbs *iwcm;
1787 * alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the
1788 * driver initialized data. The struct is kfree()'ed by the sysfs
1789 * core when the device is removed. A lifespan of -1 in the return
1790 * struct tells the core to set a default lifespan.
1792 struct rdma_hw_stats *(*alloc_hw_stats)(struct ib_device *device,
1795 * get_hw_stats - Fill in the counter value(s) in the stats struct.
1796 * @index - The index in the value array we wish to have updated, or
1797 * num_counters if we want all stats updated
1799 * < 0 - Error, no counters updated
1800 * index - Updated the single counter pointed to by index
1801 * num_counters - Updated all counters (will reset the timestamp
1802 * and prevent further calls for lifespan milliseconds)
1803 * Drivers are allowed to update all counters in leiu of just the
1804 * one given in index at their option
1806 int (*get_hw_stats)(struct ib_device *device,
1807 struct rdma_hw_stats *stats,
1808 u8 port, int index);
1809 int (*query_device)(struct ib_device *device,
1810 struct ib_device_attr *device_attr,
1811 struct ib_udata *udata);
1812 int (*query_port)(struct ib_device *device,
1814 struct ib_port_attr *port_attr);
1815 enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
1817 /* When calling get_netdev, the HW vendor's driver should return the
1818 * net device of device @device at port @port_num or NULL if such
1819 * a net device doesn't exist. The vendor driver should call dev_hold
1820 * on this net device. The HW vendor's device driver must guarantee
1821 * that this function returns NULL before the net device reaches
1822 * NETDEV_UNREGISTER_FINAL state.
1824 struct net_device *(*get_netdev)(struct ib_device *device,
1826 int (*query_gid)(struct ib_device *device,
1827 u8 port_num, int index,
1829 /* When calling add_gid, the HW vendor's driver should
1830 * add the gid of device @device at gid index @index of
1831 * port @port_num to be @gid. Meta-info of that gid (for example,
1832 * the network device related to this gid is available
1833 * at @attr. @context allows the HW vendor driver to store extra
1834 * information together with a GID entry. The HW vendor may allocate
1835 * memory to contain this information and store it in @context when a
1836 * new GID entry is written to. Params are consistent until the next
1837 * call of add_gid or delete_gid. The function should return 0 on
1838 * success or error otherwise. The function could be called
1839 * concurrently for different ports. This function is only called
1840 * when roce_gid_table is used.
1842 int (*add_gid)(struct ib_device *device,
1845 const union ib_gid *gid,
1846 const struct ib_gid_attr *attr,
1848 /* When calling del_gid, the HW vendor's driver should delete the
1849 * gid of device @device at gid index @index of port @port_num.
1850 * Upon the deletion of a GID entry, the HW vendor must free any
1851 * allocated memory. The caller will clear @context afterwards.
1852 * This function is only called when roce_gid_table is used.
1854 int (*del_gid)(struct ib_device *device,
1858 int (*query_pkey)(struct ib_device *device,
1859 u8 port_num, u16 index, u16 *pkey);
1860 int (*modify_device)(struct ib_device *device,
1861 int device_modify_mask,
1862 struct ib_device_modify *device_modify);
1863 int (*modify_port)(struct ib_device *device,
1864 u8 port_num, int port_modify_mask,
1865 struct ib_port_modify *port_modify);
1866 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
1867 struct ib_udata *udata);
1868 int (*dealloc_ucontext)(struct ib_ucontext *context);
1869 int (*mmap)(struct ib_ucontext *context,
1870 struct vm_area_struct *vma);
1871 struct ib_pd * (*alloc_pd)(struct ib_device *device,
1872 struct ib_ucontext *context,
1873 struct ib_udata *udata);
1874 int (*dealloc_pd)(struct ib_pd *pd);
1875 struct ib_ah * (*create_ah)(struct ib_pd *pd,
1876 struct ib_ah_attr *ah_attr);
1877 int (*modify_ah)(struct ib_ah *ah,
1878 struct ib_ah_attr *ah_attr);
1879 int (*query_ah)(struct ib_ah *ah,
1880 struct ib_ah_attr *ah_attr);
1881 int (*destroy_ah)(struct ib_ah *ah);
1882 struct ib_srq * (*create_srq)(struct ib_pd *pd,
1883 struct ib_srq_init_attr *srq_init_attr,
1884 struct ib_udata *udata);
1885 int (*modify_srq)(struct ib_srq *srq,
1886 struct ib_srq_attr *srq_attr,
1887 enum ib_srq_attr_mask srq_attr_mask,
1888 struct ib_udata *udata);
1889 int (*query_srq)(struct ib_srq *srq,
1890 struct ib_srq_attr *srq_attr);
1891 int (*destroy_srq)(struct ib_srq *srq);
1892 int (*post_srq_recv)(struct ib_srq *srq,
1893 struct ib_recv_wr *recv_wr,
1894 struct ib_recv_wr **bad_recv_wr);
1895 struct ib_qp * (*create_qp)(struct ib_pd *pd,
1896 struct ib_qp_init_attr *qp_init_attr,
1897 struct ib_udata *udata);
1898 int (*modify_qp)(struct ib_qp *qp,
1899 struct ib_qp_attr *qp_attr,
1901 struct ib_udata *udata);
1902 int (*query_qp)(struct ib_qp *qp,
1903 struct ib_qp_attr *qp_attr,
1905 struct ib_qp_init_attr *qp_init_attr);
1906 int (*destroy_qp)(struct ib_qp *qp);
1907 int (*post_send)(struct ib_qp *qp,
1908 struct ib_send_wr *send_wr,
1909 struct ib_send_wr **bad_send_wr);
1910 int (*post_recv)(struct ib_qp *qp,
1911 struct ib_recv_wr *recv_wr,
1912 struct ib_recv_wr **bad_recv_wr);
1913 struct ib_cq * (*create_cq)(struct ib_device *device,
1914 const struct ib_cq_init_attr *attr,
1915 struct ib_ucontext *context,
1916 struct ib_udata *udata);
1917 int (*modify_cq)(struct ib_cq *cq, u16 cq_count,
1919 int (*destroy_cq)(struct ib_cq *cq);
1920 int (*resize_cq)(struct ib_cq *cq, int cqe,
1921 struct ib_udata *udata);
1922 int (*poll_cq)(struct ib_cq *cq, int num_entries,
1924 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
1925 int (*req_notify_cq)(struct ib_cq *cq,
1926 enum ib_cq_notify_flags flags);
1927 int (*req_ncomp_notif)(struct ib_cq *cq,
1929 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
1930 int mr_access_flags);
1931 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
1932 u64 start, u64 length,
1934 int mr_access_flags,
1935 struct ib_udata *udata);
1936 int (*rereg_user_mr)(struct ib_mr *mr,
1938 u64 start, u64 length,
1940 int mr_access_flags,
1942 struct ib_udata *udata);
1943 int (*dereg_mr)(struct ib_mr *mr);
1944 struct ib_mr * (*alloc_mr)(struct ib_pd *pd,
1945 enum ib_mr_type mr_type,
1947 int (*map_mr_sg)(struct ib_mr *mr,
1948 struct scatterlist *sg,
1950 unsigned int *sg_offset);
1951 struct ib_mw * (*alloc_mw)(struct ib_pd *pd,
1952 enum ib_mw_type type,
1953 struct ib_udata *udata);
1954 int (*dealloc_mw)(struct ib_mw *mw);
1955 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
1956 int mr_access_flags,
1957 struct ib_fmr_attr *fmr_attr);
1958 int (*map_phys_fmr)(struct ib_fmr *fmr,
1959 u64 *page_list, int list_len,
1961 int (*unmap_fmr)(struct list_head *fmr_list);
1962 int (*dealloc_fmr)(struct ib_fmr *fmr);
1963 int (*attach_mcast)(struct ib_qp *qp,
1966 int (*detach_mcast)(struct ib_qp *qp,
1969 int (*process_mad)(struct ib_device *device,
1970 int process_mad_flags,
1972 const struct ib_wc *in_wc,
1973 const struct ib_grh *in_grh,
1974 const struct ib_mad_hdr *in_mad,
1976 struct ib_mad_hdr *out_mad,
1977 size_t *out_mad_size,
1978 u16 *out_mad_pkey_index);
1979 struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device,
1980 struct ib_ucontext *ucontext,
1981 struct ib_udata *udata);
1982 int (*dealloc_xrcd)(struct ib_xrcd *xrcd);
1983 struct ib_flow * (*create_flow)(struct ib_qp *qp,
1987 int (*destroy_flow)(struct ib_flow *flow_id);
1988 int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
1989 struct ib_mr_status *mr_status);
1990 void (*disassociate_ucontext)(struct ib_ucontext *ibcontext);
1991 void (*drain_rq)(struct ib_qp *qp);
1992 void (*drain_sq)(struct ib_qp *qp);
1993 int (*set_vf_link_state)(struct ib_device *device, int vf, u8 port,
1995 int (*get_vf_config)(struct ib_device *device, int vf, u8 port,
1996 struct ifla_vf_info *ivf);
1997 int (*get_vf_stats)(struct ib_device *device, int vf, u8 port,
1998 struct ifla_vf_stats *stats);
1999 int (*set_vf_guid)(struct ib_device *device, int vf, u8 port, u64 guid,
2001 struct ib_wq * (*create_wq)(struct ib_pd *pd,
2002 struct ib_wq_init_attr *init_attr,
2003 struct ib_udata *udata);
2004 int (*destroy_wq)(struct ib_wq *wq);
2005 int (*modify_wq)(struct ib_wq *wq,
2006 struct ib_wq_attr *attr,
2008 struct ib_udata *udata);
2009 struct ib_rwq_ind_table * (*create_rwq_ind_table)(struct ib_device *device,
2010 struct ib_rwq_ind_table_init_attr *init_attr,
2011 struct ib_udata *udata);
2012 int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table);
2013 struct ib_dma_mapping_ops *dma_ops;
2015 struct module *owner;
2017 struct kobject *ports_parent;
2018 struct list_head port_list;
2021 IB_DEV_UNINITIALIZED,
2027 u64 uverbs_cmd_mask;
2028 u64 uverbs_ex_cmd_mask;
2036 struct ib_device_attr attrs;
2037 struct attribute_group *hw_stats_ag;
2038 struct rdma_hw_stats *hw_stats;
2041 * The following mandatory functions are used only at device
2042 * registration. Keep functions such as these at the end of this
2043 * structure to avoid cache line misses when accessing struct ib_device
2046 int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *);
2047 void (*get_dev_fw_str)(struct ib_device *, char *str, size_t str_len);
2052 void (*add) (struct ib_device *);
2053 void (*remove)(struct ib_device *, void *client_data);
2055 /* Returns the net_dev belonging to this ib_client and matching the
2057 * @dev: An RDMA device that the net_dev use for communication.
2058 * @port: A physical port number on the RDMA device.
2059 * @pkey: P_Key that the net_dev uses if applicable.
2060 * @gid: A GID that the net_dev uses to communicate.
2061 * @addr: An IP address the net_dev is configured with.
2062 * @client_data: The device's client data set by ib_set_client_data().
2064 * An ib_client that implements a net_dev on top of RDMA devices
2065 * (such as IP over IB) should implement this callback, allowing the
2066 * rdma_cm module to find the right net_dev for a given request.
2068 * The caller is responsible for calling dev_put on the returned
2070 struct net_device *(*get_net_dev_by_params)(
2071 struct ib_device *dev,
2074 const union ib_gid *gid,
2075 const struct sockaddr *addr,
2077 struct list_head list;
2080 struct ib_device *ib_alloc_device(size_t size);
2081 void ib_dealloc_device(struct ib_device *device);
2083 void ib_get_device_fw_str(struct ib_device *device, char *str, size_t str_len);
2085 int ib_register_device(struct ib_device *device,
2086 int (*port_callback)(struct ib_device *,
2087 u8, struct kobject *));
2088 void ib_unregister_device(struct ib_device *device);
2090 int ib_register_client (struct ib_client *client);
2091 void ib_unregister_client(struct ib_client *client);
2093 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
2094 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
2097 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
2099 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
2102 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
2104 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
2107 static inline bool ib_is_udata_cleared(struct ib_udata *udata,
2111 const void __user *p = udata->inbuf + offset;
2115 if (len > USHRT_MAX)
2118 buf = kmalloc(len, GFP_KERNEL);
2122 if (copy_from_user(buf, p, len))
2125 ret = !memchr_inv(buf, 0, len);
2133 * ib_modify_qp_is_ok - Check that the supplied attribute mask
2134 * contains all required attributes and no attributes not allowed for
2135 * the given QP state transition.
2136 * @cur_state: Current QP state
2137 * @next_state: Next QP state
2139 * @mask: Mask of supplied QP attributes
2140 * @ll : link layer of port
2142 * This function is a helper function that a low-level driver's
2143 * modify_qp method can use to validate the consumer's input. It
2144 * checks that cur_state and next_state are valid QP states, that a
2145 * transition from cur_state to next_state is allowed by the IB spec,
2146 * and that the attribute mask supplied is allowed for the transition.
2148 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
2149 enum ib_qp_type type, enum ib_qp_attr_mask mask,
2150 enum rdma_link_layer ll);
2152 int ib_register_event_handler (struct ib_event_handler *event_handler);
2153 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
2154 void ib_dispatch_event(struct ib_event *event);
2156 int ib_query_port(struct ib_device *device,
2157 u8 port_num, struct ib_port_attr *port_attr);
2159 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
2163 * rdma_cap_ib_switch - Check if the device is IB switch
2164 * @device: Device to check
2166 * Device driver is responsible for setting is_switch bit on
2167 * in ib_device structure at init time.
2169 * Return: true if the device is IB switch.
2171 static inline bool rdma_cap_ib_switch(const struct ib_device *device)
2173 return device->is_switch;
2177 * rdma_start_port - Return the first valid port number for the device
2180 * @device: Device to be checked
2182 * Return start port number
2184 static inline u8 rdma_start_port(const struct ib_device *device)
2186 return rdma_cap_ib_switch(device) ? 0 : 1;
2190 * rdma_end_port - Return the last valid port number for the device
2193 * @device: Device to be checked
2195 * Return last port number
2197 static inline u8 rdma_end_port(const struct ib_device *device)
2199 return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt;
2202 static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num)
2204 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB;
2207 static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num)
2209 return device->port_immutable[port_num].core_cap_flags &
2210 (RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP);
2213 static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, u8 port_num)
2215 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
2218 static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, u8 port_num)
2220 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE;
2223 static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num)
2225 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP;
2228 static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num)
2230 return rdma_protocol_ib(device, port_num) ||
2231 rdma_protocol_roce(device, port_num);
2235 * rdma_cap_ib_mad - Check if the port of a device supports Infiniband
2236 * Management Datagrams.
2237 * @device: Device to check
2238 * @port_num: Port number to check
2240 * Management Datagrams (MAD) are a required part of the InfiniBand
2241 * specification and are supported on all InfiniBand devices. A slightly
2242 * extended version are also supported on OPA interfaces.
2244 * Return: true if the port supports sending/receiving of MAD packets.
2246 static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num)
2248 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_MAD;
2252 * rdma_cap_opa_mad - Check if the port of device provides support for OPA
2253 * Management Datagrams.
2254 * @device: Device to check
2255 * @port_num: Port number to check
2257 * Intel OmniPath devices extend and/or replace the InfiniBand Management
2258 * datagrams with their own versions. These OPA MADs share many but not all of
2259 * the characteristics of InfiniBand MADs.
2261 * OPA MADs differ in the following ways:
2263 * 1) MADs are variable size up to 2K
2264 * IBTA defined MADs remain fixed at 256 bytes
2265 * 2) OPA SMPs must carry valid PKeys
2266 * 3) OPA SMP packets are a different format
2268 * Return: true if the port supports OPA MAD packet formats.
2270 static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num)
2272 return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD)
2273 == RDMA_CORE_CAP_OPA_MAD;
2277 * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband
2278 * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI).
2279 * @device: Device to check
2280 * @port_num: Port number to check
2282 * Each InfiniBand node is required to provide a Subnet Management Agent
2283 * that the subnet manager can access. Prior to the fabric being fully
2284 * configured by the subnet manager, the SMA is accessed via a well known
2285 * interface called the Subnet Management Interface (SMI). This interface
2286 * uses directed route packets to communicate with the SM to get around the
2287 * chicken and egg problem of the SM needing to know what's on the fabric
2288 * in order to configure the fabric, and needing to configure the fabric in
2289 * order to send packets to the devices on the fabric. These directed
2290 * route packets do not need the fabric fully configured in order to reach
2291 * their destination. The SMI is the only method allowed to send
2292 * directed route packets on an InfiniBand fabric.
2294 * Return: true if the port provides an SMI.
2296 static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num)
2298 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SMI;
2302 * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband
2303 * Communication Manager.
2304 * @device: Device to check
2305 * @port_num: Port number to check
2307 * The InfiniBand Communication Manager is one of many pre-defined General
2308 * Service Agents (GSA) that are accessed via the General Service
2309 * Interface (GSI). It's role is to facilitate establishment of connections
2310 * between nodes as well as other management related tasks for established
2313 * Return: true if the port supports an IB CM (this does not guarantee that
2314 * a CM is actually running however).
2316 static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num)
2318 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_CM;
2322 * rdma_cap_iw_cm - Check if the port of device has the capability IWARP
2323 * Communication Manager.
2324 * @device: Device to check
2325 * @port_num: Port number to check
2327 * Similar to above, but specific to iWARP connections which have a different
2328 * managment protocol than InfiniBand.
2330 * Return: true if the port supports an iWARP CM (this does not guarantee that
2331 * a CM is actually running however).
2333 static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num)
2335 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IW_CM;
2339 * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband
2340 * Subnet Administration.
2341 * @device: Device to check
2342 * @port_num: Port number to check
2344 * An InfiniBand Subnet Administration (SA) service is a pre-defined General
2345 * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand
2346 * fabrics, devices should resolve routes to other hosts by contacting the
2347 * SA to query the proper route.
2349 * Return: true if the port should act as a client to the fabric Subnet
2350 * Administration interface. This does not imply that the SA service is
2353 static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num)
2355 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SA;
2359 * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband
2361 * @device: Device to check
2362 * @port_num: Port number to check
2364 * InfiniBand multicast registration is more complex than normal IPv4 or
2365 * IPv6 multicast registration. Each Host Channel Adapter must register
2366 * with the Subnet Manager when it wishes to join a multicast group. It
2367 * should do so only once regardless of how many queue pairs it subscribes
2368 * to this group. And it should leave the group only after all queue pairs
2369 * attached to the group have been detached.
2371 * Return: true if the port must undertake the additional adminstrative
2372 * overhead of registering/unregistering with the SM and tracking of the
2373 * total number of queue pairs attached to the multicast group.
2375 static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num)
2377 return rdma_cap_ib_sa(device, port_num);
2381 * rdma_cap_af_ib - Check if the port of device has the capability
2382 * Native Infiniband Address.
2383 * @device: Device to check
2384 * @port_num: Port number to check
2386 * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default
2387 * GID. RoCE uses a different mechanism, but still generates a GID via
2388 * a prescribed mechanism and port specific data.
2390 * Return: true if the port uses a GID address to identify devices on the
2393 static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num)
2395 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_AF_IB;
2399 * rdma_cap_eth_ah - Check if the port of device has the capability
2400 * Ethernet Address Handle.
2401 * @device: Device to check
2402 * @port_num: Port number to check
2404 * RoCE is InfiniBand over Ethernet, and it uses a well defined technique
2405 * to fabricate GIDs over Ethernet/IP specific addresses native to the
2406 * port. Normally, packet headers are generated by the sending host
2407 * adapter, but when sending connectionless datagrams, we must manually
2408 * inject the proper headers for the fabric we are communicating over.
2410 * Return: true if we are running as a RoCE port and must force the
2411 * addition of a Global Route Header built from our Ethernet Address
2412 * Handle into our header list for connectionless packets.
2414 static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num)
2416 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_AH;
2420 * rdma_max_mad_size - Return the max MAD size required by this RDMA Port.
2423 * @port_num: Port number
2425 * This MAD size includes the MAD headers and MAD payload. No other headers
2428 * Return the max MAD size required by the Port. Will return 0 if the port
2429 * does not support MADs
2431 static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num)
2433 return device->port_immutable[port_num].max_mad_size;
2437 * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table
2438 * @device: Device to check
2439 * @port_num: Port number to check
2441 * RoCE GID table mechanism manages the various GIDs for a device.
2443 * NOTE: if allocating the port's GID table has failed, this call will still
2444 * return true, but any RoCE GID table API will fail.
2446 * Return: true if the port uses RoCE GID table mechanism in order to manage
2449 static inline bool rdma_cap_roce_gid_table(const struct ib_device *device,
2452 return rdma_protocol_roce(device, port_num) &&
2453 device->add_gid && device->del_gid;
2457 * Check if the device supports READ W/ INVALIDATE.
2459 static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num)
2462 * iWarp drivers must support READ W/ INVALIDATE. No other protocol
2463 * has support for it yet.
2465 return rdma_protocol_iwarp(dev, port_num);
2468 int ib_query_gid(struct ib_device *device,
2469 u8 port_num, int index, union ib_gid *gid,
2470 struct ib_gid_attr *attr);
2472 int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port,
2474 int ib_get_vf_config(struct ib_device *device, int vf, u8 port,
2475 struct ifla_vf_info *info);
2476 int ib_get_vf_stats(struct ib_device *device, int vf, u8 port,
2477 struct ifla_vf_stats *stats);
2478 int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid,
2481 int ib_query_pkey(struct ib_device *device,
2482 u8 port_num, u16 index, u16 *pkey);
2484 int ib_modify_device(struct ib_device *device,
2485 int device_modify_mask,
2486 struct ib_device_modify *device_modify);
2488 int ib_modify_port(struct ib_device *device,
2489 u8 port_num, int port_modify_mask,
2490 struct ib_port_modify *port_modify);
2492 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
2493 enum ib_gid_type gid_type, struct net_device *ndev,
2494 u8 *port_num, u16 *index);
2496 int ib_find_pkey(struct ib_device *device,
2497 u8 port_num, u16 pkey, u16 *index);
2499 struct ib_pd *ib_alloc_pd(struct ib_device *device);
2501 void ib_dealloc_pd(struct ib_pd *pd);
2504 * ib_create_ah - Creates an address handle for the given address vector.
2505 * @pd: The protection domain associated with the address handle.
2506 * @ah_attr: The attributes of the address vector.
2508 * The address handle is used to reference a local or global destination
2509 * in all UD QP post sends.
2511 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
2514 * ib_init_ah_from_wc - Initializes address handle attributes from a
2516 * @device: Device on which the received message arrived.
2517 * @port_num: Port on which the received message arrived.
2518 * @wc: Work completion associated with the received message.
2519 * @grh: References the received global route header. This parameter is
2520 * ignored unless the work completion indicates that the GRH is valid.
2521 * @ah_attr: Returned attributes that can be used when creating an address
2522 * handle for replying to the message.
2524 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num,
2525 const struct ib_wc *wc, const struct ib_grh *grh,
2526 struct ib_ah_attr *ah_attr);
2529 * ib_create_ah_from_wc - Creates an address handle associated with the
2530 * sender of the specified work completion.
2531 * @pd: The protection domain associated with the address handle.
2532 * @wc: Work completion information associated with a received message.
2533 * @grh: References the received global route header. This parameter is
2534 * ignored unless the work completion indicates that the GRH is valid.
2535 * @port_num: The outbound port number to associate with the address.
2537 * The address handle is used to reference a local or global destination
2538 * in all UD QP post sends.
2540 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc,
2541 const struct ib_grh *grh, u8 port_num);
2544 * ib_modify_ah - Modifies the address vector associated with an address
2546 * @ah: The address handle to modify.
2547 * @ah_attr: The new address vector attributes to associate with the
2550 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
2553 * ib_query_ah - Queries the address vector associated with an address
2555 * @ah: The address handle to query.
2556 * @ah_attr: The address vector attributes associated with the address
2559 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
2562 * ib_destroy_ah - Destroys an address handle.
2563 * @ah: The address handle to destroy.
2565 int ib_destroy_ah(struct ib_ah *ah);
2568 * ib_create_srq - Creates a SRQ associated with the specified protection
2570 * @pd: The protection domain associated with the SRQ.
2571 * @srq_init_attr: A list of initial attributes required to create the
2572 * SRQ. If SRQ creation succeeds, then the attributes are updated to
2573 * the actual capabilities of the created SRQ.
2575 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
2576 * requested size of the SRQ, and set to the actual values allocated
2577 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
2578 * will always be at least as large as the requested values.
2580 struct ib_srq *ib_create_srq(struct ib_pd *pd,
2581 struct ib_srq_init_attr *srq_init_attr);
2584 * ib_modify_srq - Modifies the attributes for the specified SRQ.
2585 * @srq: The SRQ to modify.
2586 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
2587 * the current values of selected SRQ attributes are returned.
2588 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
2589 * are being modified.
2591 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
2592 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
2593 * the number of receives queued drops below the limit.
2595 int ib_modify_srq(struct ib_srq *srq,
2596 struct ib_srq_attr *srq_attr,
2597 enum ib_srq_attr_mask srq_attr_mask);
2600 * ib_query_srq - Returns the attribute list and current values for the
2602 * @srq: The SRQ to query.
2603 * @srq_attr: The attributes of the specified SRQ.
2605 int ib_query_srq(struct ib_srq *srq,
2606 struct ib_srq_attr *srq_attr);
2609 * ib_destroy_srq - Destroys the specified SRQ.
2610 * @srq: The SRQ to destroy.
2612 int ib_destroy_srq(struct ib_srq *srq);
2615 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
2616 * @srq: The SRQ to post the work request on.
2617 * @recv_wr: A list of work requests to post on the receive queue.
2618 * @bad_recv_wr: On an immediate failure, this parameter will reference
2619 * the work request that failed to be posted on the QP.
2621 static inline int ib_post_srq_recv(struct ib_srq *srq,
2622 struct ib_recv_wr *recv_wr,
2623 struct ib_recv_wr **bad_recv_wr)
2625 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
2629 * ib_create_qp - Creates a QP associated with the specified protection
2631 * @pd: The protection domain associated with the QP.
2632 * @qp_init_attr: A list of initial attributes required to create the
2633 * QP. If QP creation succeeds, then the attributes are updated to
2634 * the actual capabilities of the created QP.
2636 struct ib_qp *ib_create_qp(struct ib_pd *pd,
2637 struct ib_qp_init_attr *qp_init_attr);
2640 * ib_modify_qp - Modifies the attributes for the specified QP and then
2641 * transitions the QP to the given state.
2642 * @qp: The QP to modify.
2643 * @qp_attr: On input, specifies the QP attributes to modify. On output,
2644 * the current values of selected QP attributes are returned.
2645 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
2646 * are being modified.
2648 int ib_modify_qp(struct ib_qp *qp,
2649 struct ib_qp_attr *qp_attr,
2653 * ib_query_qp - Returns the attribute list and current values for the
2655 * @qp: The QP to query.
2656 * @qp_attr: The attributes of the specified QP.
2657 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
2658 * @qp_init_attr: Additional attributes of the selected QP.
2660 * The qp_attr_mask may be used to limit the query to gathering only the
2661 * selected attributes.
2663 int ib_query_qp(struct ib_qp *qp,
2664 struct ib_qp_attr *qp_attr,
2666 struct ib_qp_init_attr *qp_init_attr);
2669 * ib_destroy_qp - Destroys the specified QP.
2670 * @qp: The QP to destroy.
2672 int ib_destroy_qp(struct ib_qp *qp);
2675 * ib_open_qp - Obtain a reference to an existing sharable QP.
2676 * @xrcd - XRC domain
2677 * @qp_open_attr: Attributes identifying the QP to open.
2679 * Returns a reference to a sharable QP.
2681 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
2682 struct ib_qp_open_attr *qp_open_attr);
2685 * ib_close_qp - Release an external reference to a QP.
2686 * @qp: The QP handle to release
2688 * The opened QP handle is released by the caller. The underlying
2689 * shared QP is not destroyed until all internal references are released.
2691 int ib_close_qp(struct ib_qp *qp);
2694 * ib_post_send - Posts a list of work requests to the send queue of
2696 * @qp: The QP to post the work request on.
2697 * @send_wr: A list of work requests to post on the send queue.
2698 * @bad_send_wr: On an immediate failure, this parameter will reference
2699 * the work request that failed to be posted on the QP.
2701 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
2702 * error is returned, the QP state shall not be affected,
2703 * ib_post_send() will return an immediate error after queueing any
2704 * earlier work requests in the list.
2706 static inline int ib_post_send(struct ib_qp *qp,
2707 struct ib_send_wr *send_wr,
2708 struct ib_send_wr **bad_send_wr)
2710 return qp->device->post_send(qp, send_wr, bad_send_wr);
2714 * ib_post_recv - Posts a list of work requests to the receive queue of
2716 * @qp: The QP to post the work request on.
2717 * @recv_wr: A list of work requests to post on the receive queue.
2718 * @bad_recv_wr: On an immediate failure, this parameter will reference
2719 * the work request that failed to be posted on the QP.
2721 static inline int ib_post_recv(struct ib_qp *qp,
2722 struct ib_recv_wr *recv_wr,
2723 struct ib_recv_wr **bad_recv_wr)
2725 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
2728 struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private,
2729 int nr_cqe, int comp_vector, enum ib_poll_context poll_ctx);
2730 void ib_free_cq(struct ib_cq *cq);
2731 int ib_process_cq_direct(struct ib_cq *cq, int budget);
2734 * ib_create_cq - Creates a CQ on the specified device.
2735 * @device: The device on which to create the CQ.
2736 * @comp_handler: A user-specified callback that is invoked when a
2737 * completion event occurs on the CQ.
2738 * @event_handler: A user-specified callback that is invoked when an
2739 * asynchronous event not associated with a completion occurs on the CQ.
2740 * @cq_context: Context associated with the CQ returned to the user via
2741 * the associated completion and event handlers.
2742 * @cq_attr: The attributes the CQ should be created upon.
2744 * Users can examine the cq structure to determine the actual CQ size.
2746 struct ib_cq *ib_create_cq(struct ib_device *device,
2747 ib_comp_handler comp_handler,
2748 void (*event_handler)(struct ib_event *, void *),
2750 const struct ib_cq_init_attr *cq_attr);
2753 * ib_resize_cq - Modifies the capacity of the CQ.
2754 * @cq: The CQ to resize.
2755 * @cqe: The minimum size of the CQ.
2757 * Users can examine the cq structure to determine the actual CQ size.
2759 int ib_resize_cq(struct ib_cq *cq, int cqe);
2762 * ib_modify_cq - Modifies moderation params of the CQ
2763 * @cq: The CQ to modify.
2764 * @cq_count: number of CQEs that will trigger an event
2765 * @cq_period: max period of time in usec before triggering an event
2768 int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
2771 * ib_destroy_cq - Destroys the specified CQ.
2772 * @cq: The CQ to destroy.
2774 int ib_destroy_cq(struct ib_cq *cq);
2777 * ib_poll_cq - poll a CQ for completion(s)
2778 * @cq:the CQ being polled
2779 * @num_entries:maximum number of completions to return
2780 * @wc:array of at least @num_entries &struct ib_wc where completions
2783 * Poll a CQ for (possibly multiple) completions. If the return value
2784 * is < 0, an error occurred. If the return value is >= 0, it is the
2785 * number of completions returned. If the return value is
2786 * non-negative and < num_entries, then the CQ was emptied.
2788 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
2791 return cq->device->poll_cq(cq, num_entries, wc);
2795 * ib_peek_cq - Returns the number of unreaped completions currently
2796 * on the specified CQ.
2797 * @cq: The CQ to peek.
2798 * @wc_cnt: A minimum number of unreaped completions to check for.
2800 * If the number of unreaped completions is greater than or equal to wc_cnt,
2801 * this function returns wc_cnt, otherwise, it returns the actual number of
2802 * unreaped completions.
2804 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
2807 * ib_req_notify_cq - Request completion notification on a CQ.
2808 * @cq: The CQ to generate an event for.
2810 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
2811 * to request an event on the next solicited event or next work
2812 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
2813 * may also be |ed in to request a hint about missed events, as
2817 * < 0 means an error occurred while requesting notification
2818 * == 0 means notification was requested successfully, and if
2819 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
2820 * were missed and it is safe to wait for another event. In
2821 * this case is it guaranteed that any work completions added
2822 * to the CQ since the last CQ poll will trigger a completion
2823 * notification event.
2824 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
2825 * in. It means that the consumer must poll the CQ again to
2826 * make sure it is empty to avoid missing an event because of a
2827 * race between requesting notification and an entry being
2828 * added to the CQ. This return value means it is possible
2829 * (but not guaranteed) that a work completion has been added
2830 * to the CQ since the last poll without triggering a
2831 * completion notification event.
2833 static inline int ib_req_notify_cq(struct ib_cq *cq,
2834 enum ib_cq_notify_flags flags)
2836 return cq->device->req_notify_cq(cq, flags);
2840 * ib_req_ncomp_notif - Request completion notification when there are
2841 * at least the specified number of unreaped completions on the CQ.
2842 * @cq: The CQ to generate an event for.
2843 * @wc_cnt: The number of unreaped completions that should be on the
2844 * CQ before an event is generated.
2846 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
2848 return cq->device->req_ncomp_notif ?
2849 cq->device->req_ncomp_notif(cq, wc_cnt) :
2854 * ib_get_dma_mr - Returns a memory region for system memory that is
2856 * @pd: The protection domain associated with the memory region.
2857 * @mr_access_flags: Specifies the memory access rights.
2859 * Note that the ib_dma_*() functions defined below must be used
2860 * to create/destroy addresses used with the Lkey or Rkey returned
2861 * by ib_get_dma_mr().
2863 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
2866 * ib_dma_mapping_error - check a DMA addr for error
2867 * @dev: The device for which the dma_addr was created
2868 * @dma_addr: The DMA address to check
2870 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
2873 return dev->dma_ops->mapping_error(dev, dma_addr);
2874 return dma_mapping_error(dev->dma_device, dma_addr);
2878 * ib_dma_map_single - Map a kernel virtual address to DMA address
2879 * @dev: The device for which the dma_addr is to be created
2880 * @cpu_addr: The kernel virtual address
2881 * @size: The size of the region in bytes
2882 * @direction: The direction of the DMA
2884 static inline u64 ib_dma_map_single(struct ib_device *dev,
2885 void *cpu_addr, size_t size,
2886 enum dma_data_direction direction)
2889 return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
2890 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
2894 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
2895 * @dev: The device for which the DMA address was created
2896 * @addr: The DMA address
2897 * @size: The size of the region in bytes
2898 * @direction: The direction of the DMA
2900 static inline void ib_dma_unmap_single(struct ib_device *dev,
2901 u64 addr, size_t size,
2902 enum dma_data_direction direction)
2905 dev->dma_ops->unmap_single(dev, addr, size, direction);
2907 dma_unmap_single(dev->dma_device, addr, size, direction);
2910 static inline u64 ib_dma_map_single_attrs(struct ib_device *dev,
2911 void *cpu_addr, size_t size,
2912 enum dma_data_direction direction,
2913 unsigned long dma_attrs)
2915 return dma_map_single_attrs(dev->dma_device, cpu_addr, size,
2916 direction, dma_attrs);
2919 static inline void ib_dma_unmap_single_attrs(struct ib_device *dev,
2920 u64 addr, size_t size,
2921 enum dma_data_direction direction,
2922 unsigned long dma_attrs)
2924 return dma_unmap_single_attrs(dev->dma_device, addr, size,
2925 direction, dma_attrs);
2929 * ib_dma_map_page - Map a physical page to DMA address
2930 * @dev: The device for which the dma_addr is to be created
2931 * @page: The page to be mapped
2932 * @offset: The offset within the page
2933 * @size: The size of the region in bytes
2934 * @direction: The direction of the DMA
2936 static inline u64 ib_dma_map_page(struct ib_device *dev,
2938 unsigned long offset,
2940 enum dma_data_direction direction)
2943 return dev->dma_ops->map_page(dev, page, offset, size, direction);
2944 return dma_map_page(dev->dma_device, page, offset, size, direction);
2948 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
2949 * @dev: The device for which the DMA address was created
2950 * @addr: The DMA address
2951 * @size: The size of the region in bytes
2952 * @direction: The direction of the DMA
2954 static inline void ib_dma_unmap_page(struct ib_device *dev,
2955 u64 addr, size_t size,
2956 enum dma_data_direction direction)
2959 dev->dma_ops->unmap_page(dev, addr, size, direction);
2961 dma_unmap_page(dev->dma_device, addr, size, direction);
2965 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
2966 * @dev: The device for which the DMA addresses are to be created
2967 * @sg: The array of scatter/gather entries
2968 * @nents: The number of scatter/gather entries
2969 * @direction: The direction of the DMA
2971 static inline int ib_dma_map_sg(struct ib_device *dev,
2972 struct scatterlist *sg, int nents,
2973 enum dma_data_direction direction)
2976 return dev->dma_ops->map_sg(dev, sg, nents, direction);
2977 return dma_map_sg(dev->dma_device, sg, nents, direction);
2981 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
2982 * @dev: The device for which the DMA addresses were created
2983 * @sg: The array of scatter/gather entries
2984 * @nents: The number of scatter/gather entries
2985 * @direction: The direction of the DMA
2987 static inline void ib_dma_unmap_sg(struct ib_device *dev,
2988 struct scatterlist *sg, int nents,
2989 enum dma_data_direction direction)
2992 dev->dma_ops->unmap_sg(dev, sg, nents, direction);
2994 dma_unmap_sg(dev->dma_device, sg, nents, direction);
2997 static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
2998 struct scatterlist *sg, int nents,
2999 enum dma_data_direction direction,
3000 unsigned long dma_attrs)
3002 return dma_map_sg_attrs(dev->dma_device, sg, nents, direction,
3006 static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
3007 struct scatterlist *sg, int nents,
3008 enum dma_data_direction direction,
3009 unsigned long dma_attrs)
3011 dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, dma_attrs);
3014 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
3015 * @dev: The device for which the DMA addresses were created
3016 * @sg: The scatter/gather entry
3018 * Note: this function is obsolete. To do: change all occurrences of
3019 * ib_sg_dma_address() into sg_dma_address().
3021 static inline u64 ib_sg_dma_address(struct ib_device *dev,
3022 struct scatterlist *sg)
3024 return sg_dma_address(sg);
3028 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
3029 * @dev: The device for which the DMA addresses were created
3030 * @sg: The scatter/gather entry
3032 * Note: this function is obsolete. To do: change all occurrences of
3033 * ib_sg_dma_len() into sg_dma_len().
3035 static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
3036 struct scatterlist *sg)
3038 return sg_dma_len(sg);
3042 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
3043 * @dev: The device for which the DMA address was created
3044 * @addr: The DMA address
3045 * @size: The size of the region in bytes
3046 * @dir: The direction of the DMA
3048 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
3051 enum dma_data_direction dir)
3054 dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
3056 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
3060 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
3061 * @dev: The device for which the DMA address was created
3062 * @addr: The DMA address
3063 * @size: The size of the region in bytes
3064 * @dir: The direction of the DMA
3066 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
3069 enum dma_data_direction dir)
3072 dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
3074 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
3078 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
3079 * @dev: The device for which the DMA address is requested
3080 * @size: The size of the region to allocate in bytes
3081 * @dma_handle: A pointer for returning the DMA address of the region
3082 * @flag: memory allocator flags
3084 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
3090 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
3095 ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
3096 *dma_handle = handle;
3102 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
3103 * @dev: The device for which the DMA addresses were allocated
3104 * @size: The size of the region
3105 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
3106 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
3108 static inline void ib_dma_free_coherent(struct ib_device *dev,
3109 size_t size, void *cpu_addr,
3113 dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
3115 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
3119 * ib_dereg_mr - Deregisters a memory region and removes it from the
3120 * HCA translation table.
3121 * @mr: The memory region to deregister.
3123 * This function can fail, if the memory region has memory windows bound to it.
3125 int ib_dereg_mr(struct ib_mr *mr);
3127 struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
3128 enum ib_mr_type mr_type,
3132 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
3134 * @mr - struct ib_mr pointer to be updated.
3135 * @newkey - new key to be used.
3137 static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey)
3139 mr->lkey = (mr->lkey & 0xffffff00) | newkey;
3140 mr->rkey = (mr->rkey & 0xffffff00) | newkey;
3144 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
3145 * for calculating a new rkey for type 2 memory windows.
3146 * @rkey - the rkey to increment.
3148 static inline u32 ib_inc_rkey(u32 rkey)
3150 const u32 mask = 0x000000ff;
3151 return ((rkey + 1) & mask) | (rkey & ~mask);
3155 * ib_alloc_fmr - Allocates a unmapped fast memory region.
3156 * @pd: The protection domain associated with the unmapped region.
3157 * @mr_access_flags: Specifies the memory access rights.
3158 * @fmr_attr: Attributes of the unmapped region.
3160 * A fast memory region must be mapped before it can be used as part of
3163 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
3164 int mr_access_flags,
3165 struct ib_fmr_attr *fmr_attr);
3168 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
3169 * @fmr: The fast memory region to associate with the pages.
3170 * @page_list: An array of physical pages to map to the fast memory region.
3171 * @list_len: The number of pages in page_list.
3172 * @iova: The I/O virtual address to use with the mapped region.
3174 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
3175 u64 *page_list, int list_len,
3178 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
3182 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
3183 * @fmr_list: A linked list of fast memory regions to unmap.
3185 int ib_unmap_fmr(struct list_head *fmr_list);
3188 * ib_dealloc_fmr - Deallocates a fast memory region.
3189 * @fmr: The fast memory region to deallocate.
3191 int ib_dealloc_fmr(struct ib_fmr *fmr);
3194 * ib_attach_mcast - Attaches the specified QP to a multicast group.
3195 * @qp: QP to attach to the multicast group. The QP must be type
3197 * @gid: Multicast group GID.
3198 * @lid: Multicast group LID in host byte order.
3200 * In order to send and receive multicast packets, subnet
3201 * administration must have created the multicast group and configured
3202 * the fabric appropriately. The port associated with the specified
3203 * QP must also be a member of the multicast group.
3205 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
3208 * ib_detach_mcast - Detaches the specified QP from a multicast group.
3209 * @qp: QP to detach from the multicast group.
3210 * @gid: Multicast group GID.
3211 * @lid: Multicast group LID in host byte order.
3213 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
3216 * ib_alloc_xrcd - Allocates an XRC domain.
3217 * @device: The device on which to allocate the XRC domain.
3219 struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device);
3222 * ib_dealloc_xrcd - Deallocates an XRC domain.
3223 * @xrcd: The XRC domain to deallocate.
3225 int ib_dealloc_xrcd(struct ib_xrcd *xrcd);
3227 struct ib_flow *ib_create_flow(struct ib_qp *qp,
3228 struct ib_flow_attr *flow_attr, int domain);
3229 int ib_destroy_flow(struct ib_flow *flow_id);
3231 static inline int ib_check_mr_access(int flags)
3234 * Local write permission is required if remote write or
3235 * remote atomic permission is also requested.
3237 if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
3238 !(flags & IB_ACCESS_LOCAL_WRITE))
3245 * ib_check_mr_status: lightweight check of MR status.
3246 * This routine may provide status checks on a selected
3247 * ib_mr. first use is for signature status check.
3249 * @mr: A memory region.
3250 * @check_mask: Bitmask of which checks to perform from
3251 * ib_mr_status_check enumeration.
3252 * @mr_status: The container of relevant status checks.
3253 * failed checks will be indicated in the status bitmask
3254 * and the relevant info shall be in the error item.
3256 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
3257 struct ib_mr_status *mr_status);
3259 struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port,
3260 u16 pkey, const union ib_gid *gid,
3261 const struct sockaddr *addr);
3262 struct ib_wq *ib_create_wq(struct ib_pd *pd,
3263 struct ib_wq_init_attr *init_attr);
3264 int ib_destroy_wq(struct ib_wq *wq);
3265 int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *attr,
3267 struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device,
3268 struct ib_rwq_ind_table_init_attr*
3269 wq_ind_table_init_attr);
3270 int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);
3272 int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
3273 unsigned int *sg_offset, unsigned int page_size);
3276 ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
3277 unsigned int *sg_offset, unsigned int page_size)
3281 n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size);
3287 int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents,
3288 unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64));
3290 void ib_drain_rq(struct ib_qp *qp);
3291 void ib_drain_sq(struct ib_qp *qp);
3292 void ib_drain_qp(struct ib_qp *qp);
3293 #endif /* IB_VERBS_H */