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 <linux/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),
1105 IB_QP_RATE_LIMIT = (1<<25),
1130 enum ib_qp_state qp_state;
1131 enum ib_qp_state cur_qp_state;
1132 enum ib_mtu path_mtu;
1133 enum ib_mig_state path_mig_state;
1138 int qp_access_flags;
1139 struct ib_qp_cap cap;
1140 struct ib_ah_attr ah_attr;
1141 struct ib_ah_attr alt_ah_attr;
1144 u8 en_sqd_async_notify;
1147 u8 max_dest_rd_atomic;
1160 IB_WR_RDMA_WRITE_WITH_IMM,
1162 IB_WR_SEND_WITH_IMM,
1164 IB_WR_ATOMIC_CMP_AND_SWP,
1165 IB_WR_ATOMIC_FETCH_AND_ADD,
1167 IB_WR_SEND_WITH_INV,
1168 IB_WR_RDMA_READ_WITH_INV,
1171 IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
1172 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
1174 /* reserve values for low level drivers' internal use.
1175 * These values will not be used at all in the ib core layer.
1177 IB_WR_RESERVED1 = 0xf0,
1189 enum ib_send_flags {
1191 IB_SEND_SIGNALED = (1<<1),
1192 IB_SEND_SOLICITED = (1<<2),
1193 IB_SEND_INLINE = (1<<3),
1194 IB_SEND_IP_CSUM = (1<<4),
1196 /* reserve bits 26-31 for low level drivers' internal use */
1197 IB_SEND_RESERVED_START = (1 << 26),
1198 IB_SEND_RESERVED_END = (1 << 31),
1208 void (*done)(struct ib_cq *cq, struct ib_wc *wc);
1212 struct ib_send_wr *next;
1215 struct ib_cqe *wr_cqe;
1217 struct ib_sge *sg_list;
1219 enum ib_wr_opcode opcode;
1223 u32 invalidate_rkey;
1228 struct ib_send_wr wr;
1233 static inline struct ib_rdma_wr *rdma_wr(struct ib_send_wr *wr)
1235 return container_of(wr, struct ib_rdma_wr, wr);
1238 struct ib_atomic_wr {
1239 struct ib_send_wr wr;
1243 u64 compare_add_mask;
1248 static inline struct ib_atomic_wr *atomic_wr(struct ib_send_wr *wr)
1250 return container_of(wr, struct ib_atomic_wr, wr);
1254 struct ib_send_wr wr;
1261 u16 pkey_index; /* valid for GSI only */
1262 u8 port_num; /* valid for DR SMPs on switch only */
1265 static inline struct ib_ud_wr *ud_wr(struct ib_send_wr *wr)
1267 return container_of(wr, struct ib_ud_wr, wr);
1271 struct ib_send_wr wr;
1277 static inline struct ib_reg_wr *reg_wr(struct ib_send_wr *wr)
1279 return container_of(wr, struct ib_reg_wr, wr);
1282 struct ib_sig_handover_wr {
1283 struct ib_send_wr wr;
1284 struct ib_sig_attrs *sig_attrs;
1285 struct ib_mr *sig_mr;
1287 struct ib_sge *prot;
1290 static inline struct ib_sig_handover_wr *sig_handover_wr(struct ib_send_wr *wr)
1292 return container_of(wr, struct ib_sig_handover_wr, wr);
1296 struct ib_recv_wr *next;
1299 struct ib_cqe *wr_cqe;
1301 struct ib_sge *sg_list;
1305 enum ib_access_flags {
1306 IB_ACCESS_LOCAL_WRITE = 1,
1307 IB_ACCESS_REMOTE_WRITE = (1<<1),
1308 IB_ACCESS_REMOTE_READ = (1<<2),
1309 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
1310 IB_ACCESS_MW_BIND = (1<<4),
1311 IB_ZERO_BASED = (1<<5),
1312 IB_ACCESS_ON_DEMAND = (1<<6),
1316 * XXX: these are apparently used for ->rereg_user_mr, no idea why they
1317 * are hidden here instead of a uapi header!
1319 enum ib_mr_rereg_flags {
1320 IB_MR_REREG_TRANS = 1,
1321 IB_MR_REREG_PD = (1<<1),
1322 IB_MR_REREG_ACCESS = (1<<2),
1323 IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
1326 struct ib_fmr_attr {
1334 struct ib_ucontext {
1335 struct ib_device *device;
1336 struct list_head pd_list;
1337 struct list_head mr_list;
1338 struct list_head mw_list;
1339 struct list_head cq_list;
1340 struct list_head qp_list;
1341 struct list_head srq_list;
1342 struct list_head ah_list;
1343 struct list_head xrcd_list;
1344 struct list_head rule_list;
1345 struct list_head wq_list;
1346 struct list_head rwq_ind_tbl_list;
1350 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1351 struct rb_root umem_tree;
1353 * Protects .umem_rbroot and tree, as well as odp_mrs_count and
1354 * mmu notifiers registration.
1356 struct rw_semaphore umem_rwsem;
1357 void (*invalidate_range)(struct ib_umem *umem,
1358 unsigned long start, unsigned long end);
1360 struct mmu_notifier mn;
1361 atomic_t notifier_count;
1362 /* A list of umems that don't have private mmu notifier counters yet. */
1363 struct list_head no_private_counters;
1369 u64 user_handle; /* handle given to us by userspace */
1370 struct ib_ucontext *context; /* associated user context */
1371 void *object; /* containing object */
1372 struct list_head list; /* link to context's list */
1373 int id; /* index into kernel idr */
1375 struct rw_semaphore mutex; /* protects .live */
1376 struct rcu_head rcu; /* kfree_rcu() overhead */
1381 const void __user *inbuf;
1382 void __user *outbuf;
1390 struct ib_device *device;
1391 struct ib_uobject *uobject;
1392 atomic_t usecnt; /* count all resources */
1394 u32 unsafe_global_rkey;
1397 * Implementation details of the RDMA core, don't use in drivers:
1399 struct ib_mr *__internal_mr;
1403 struct ib_device *device;
1404 atomic_t usecnt; /* count all exposed resources */
1405 struct inode *inode;
1407 struct mutex tgt_qp_mutex;
1408 struct list_head tgt_qp_list;
1412 struct ib_device *device;
1414 struct ib_uobject *uobject;
1417 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
1419 enum ib_poll_context {
1420 IB_POLL_DIRECT, /* caller context, no hw completions */
1421 IB_POLL_SOFTIRQ, /* poll from softirq context */
1422 IB_POLL_WORKQUEUE, /* poll from workqueue */
1426 struct ib_device *device;
1427 struct ib_uobject *uobject;
1428 ib_comp_handler comp_handler;
1429 void (*event_handler)(struct ib_event *, void *);
1432 atomic_t usecnt; /* count number of work queues */
1433 enum ib_poll_context poll_ctx;
1436 struct irq_poll iop;
1437 struct work_struct work;
1442 struct ib_device *device;
1444 struct ib_uobject *uobject;
1445 void (*event_handler)(struct ib_event *, void *);
1447 enum ib_srq_type srq_type;
1452 struct ib_xrcd *xrcd;
1470 struct ib_device *device;
1471 struct ib_uobject *uobject;
1473 void (*event_handler)(struct ib_event *, void *);
1477 enum ib_wq_state state;
1478 enum ib_wq_type wq_type;
1482 struct ib_wq_init_attr {
1484 enum ib_wq_type wq_type;
1488 void (*event_handler)(struct ib_event *, void *);
1491 enum ib_wq_attr_mask {
1492 IB_WQ_STATE = 1 << 0,
1493 IB_WQ_CUR_STATE = 1 << 1,
1497 enum ib_wq_state wq_state;
1498 enum ib_wq_state curr_wq_state;
1501 struct ib_rwq_ind_table {
1502 struct ib_device *device;
1503 struct ib_uobject *uobject;
1506 u32 log_ind_tbl_size;
1507 struct ib_wq **ind_tbl;
1510 struct ib_rwq_ind_table_init_attr {
1511 u32 log_ind_tbl_size;
1512 /* Each entry is a pointer to Receive Work Queue */
1513 struct ib_wq **ind_tbl;
1517 * @max_write_sge: Maximum SGE elements per RDMA WRITE request.
1518 * @max_read_sge: Maximum SGE elements per RDMA READ request.
1521 struct ib_device *device;
1523 struct ib_cq *send_cq;
1524 struct ib_cq *recv_cq;
1527 struct list_head rdma_mrs;
1528 struct list_head sig_mrs;
1530 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1531 struct list_head xrcd_list;
1533 /* count times opened, mcast attaches, flow attaches */
1535 struct list_head open_list;
1536 struct ib_qp *real_qp;
1537 struct ib_uobject *uobject;
1538 void (*event_handler)(struct ib_event *, void *);
1543 enum ib_qp_type qp_type;
1544 struct ib_rwq_ind_table *rwq_ind_tbl;
1548 struct ib_device *device;
1554 unsigned int page_size;
1557 struct ib_uobject *uobject; /* user */
1558 struct list_head qp_entry; /* FR */
1563 struct ib_device *device;
1565 struct ib_uobject *uobject;
1567 enum ib_mw_type type;
1571 struct ib_device *device;
1573 struct list_head list;
1578 /* Supported steering options */
1579 enum ib_flow_attr_type {
1580 /* steering according to rule specifications */
1581 IB_FLOW_ATTR_NORMAL = 0x0,
1582 /* default unicast and multicast rule -
1583 * receive all Eth traffic which isn't steered to any QP
1585 IB_FLOW_ATTR_ALL_DEFAULT = 0x1,
1586 /* default multicast rule -
1587 * receive all Eth multicast traffic which isn't steered to any QP
1589 IB_FLOW_ATTR_MC_DEFAULT = 0x2,
1590 /* sniffer rule - receive all port traffic */
1591 IB_FLOW_ATTR_SNIFFER = 0x3
1594 /* Supported steering header types */
1595 enum ib_flow_spec_type {
1597 IB_FLOW_SPEC_ETH = 0x20,
1598 IB_FLOW_SPEC_IB = 0x22,
1600 IB_FLOW_SPEC_IPV4 = 0x30,
1601 IB_FLOW_SPEC_IPV6 = 0x31,
1603 IB_FLOW_SPEC_TCP = 0x40,
1604 IB_FLOW_SPEC_UDP = 0x41,
1605 IB_FLOW_SPEC_VXLAN_TUNNEL = 0x50,
1606 IB_FLOW_SPEC_INNER = 0x100,
1608 #define IB_FLOW_SPEC_LAYER_MASK 0xF0
1609 #define IB_FLOW_SPEC_SUPPORT_LAYERS 8
1611 /* Flow steering rule priority is set according to it's domain.
1612 * Lower domain value means higher priority.
1614 enum ib_flow_domain {
1615 IB_FLOW_DOMAIN_USER,
1616 IB_FLOW_DOMAIN_ETHTOOL,
1619 IB_FLOW_DOMAIN_NUM /* Must be last */
1622 enum ib_flow_flags {
1623 IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */
1624 IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 2 /* Must be last */
1627 struct ib_flow_eth_filter {
1636 struct ib_flow_spec_eth {
1639 struct ib_flow_eth_filter val;
1640 struct ib_flow_eth_filter mask;
1643 struct ib_flow_ib_filter {
1650 struct ib_flow_spec_ib {
1653 struct ib_flow_ib_filter val;
1654 struct ib_flow_ib_filter mask;
1657 /* IPv4 header flags */
1658 enum ib_ipv4_flags {
1659 IB_IPV4_DONT_FRAG = 0x2, /* Don't enable packet fragmentation */
1660 IB_IPV4_MORE_FRAG = 0X4 /* For All fragmented packets except the
1661 last have this flag set */
1664 struct ib_flow_ipv4_filter {
1675 struct ib_flow_spec_ipv4 {
1678 struct ib_flow_ipv4_filter val;
1679 struct ib_flow_ipv4_filter mask;
1682 struct ib_flow_ipv6_filter {
1693 struct ib_flow_spec_ipv6 {
1696 struct ib_flow_ipv6_filter val;
1697 struct ib_flow_ipv6_filter mask;
1700 struct ib_flow_tcp_udp_filter {
1707 struct ib_flow_spec_tcp_udp {
1710 struct ib_flow_tcp_udp_filter val;
1711 struct ib_flow_tcp_udp_filter mask;
1714 struct ib_flow_tunnel_filter {
1719 /* ib_flow_spec_tunnel describes the Vxlan tunnel
1720 * the tunnel_id from val has the vni value
1722 struct ib_flow_spec_tunnel {
1725 struct ib_flow_tunnel_filter val;
1726 struct ib_flow_tunnel_filter mask;
1729 union ib_flow_spec {
1734 struct ib_flow_spec_eth eth;
1735 struct ib_flow_spec_ib ib;
1736 struct ib_flow_spec_ipv4 ipv4;
1737 struct ib_flow_spec_tcp_udp tcp_udp;
1738 struct ib_flow_spec_ipv6 ipv6;
1739 struct ib_flow_spec_tunnel tunnel;
1742 struct ib_flow_attr {
1743 enum ib_flow_attr_type type;
1749 /* Following are the optional layers according to user request
1750 * struct ib_flow_spec_xxx
1751 * struct ib_flow_spec_yyy
1757 struct ib_uobject *uobject;
1763 enum ib_process_mad_flags {
1764 IB_MAD_IGNORE_MKEY = 1,
1765 IB_MAD_IGNORE_BKEY = 2,
1766 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
1769 enum ib_mad_result {
1770 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
1771 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
1772 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
1773 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
1776 #define IB_DEVICE_NAME_MAX 64
1780 struct ib_event_handler event_handler;
1781 struct ib_pkey_cache **pkey_cache;
1782 struct ib_gid_table **gid_cache;
1784 enum ib_port_state *port_state_cache;
1787 struct ib_dma_mapping_ops {
1788 int (*mapping_error)(struct ib_device *dev,
1790 u64 (*map_single)(struct ib_device *dev,
1791 void *ptr, size_t size,
1792 enum dma_data_direction direction);
1793 void (*unmap_single)(struct ib_device *dev,
1794 u64 addr, size_t size,
1795 enum dma_data_direction direction);
1796 u64 (*map_page)(struct ib_device *dev,
1797 struct page *page, unsigned long offset,
1799 enum dma_data_direction direction);
1800 void (*unmap_page)(struct ib_device *dev,
1801 u64 addr, size_t size,
1802 enum dma_data_direction direction);
1803 int (*map_sg)(struct ib_device *dev,
1804 struct scatterlist *sg, int nents,
1805 enum dma_data_direction direction);
1806 void (*unmap_sg)(struct ib_device *dev,
1807 struct scatterlist *sg, int nents,
1808 enum dma_data_direction direction);
1809 int (*map_sg_attrs)(struct ib_device *dev,
1810 struct scatterlist *sg, int nents,
1811 enum dma_data_direction direction,
1812 unsigned long attrs);
1813 void (*unmap_sg_attrs)(struct ib_device *dev,
1814 struct scatterlist *sg, int nents,
1815 enum dma_data_direction direction,
1816 unsigned long attrs);
1817 void (*sync_single_for_cpu)(struct ib_device *dev,
1820 enum dma_data_direction dir);
1821 void (*sync_single_for_device)(struct ib_device *dev,
1824 enum dma_data_direction dir);
1825 void *(*alloc_coherent)(struct ib_device *dev,
1829 void (*free_coherent)(struct ib_device *dev,
1830 size_t size, void *cpu_addr,
1836 struct ib_port_immutable {
1844 struct device *dma_device;
1846 char name[IB_DEVICE_NAME_MAX];
1848 struct list_head event_handler_list;
1849 spinlock_t event_handler_lock;
1851 spinlock_t client_data_lock;
1852 struct list_head core_list;
1853 /* Access to the client_data_list is protected by the client_data_lock
1854 * spinlock and the lists_rwsem read-write semaphore */
1855 struct list_head client_data_list;
1857 struct ib_cache cache;
1859 * port_immutable is indexed by port number
1861 struct ib_port_immutable *port_immutable;
1863 int num_comp_vectors;
1865 struct iw_cm_verbs *iwcm;
1868 * alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the
1869 * driver initialized data. The struct is kfree()'ed by the sysfs
1870 * core when the device is removed. A lifespan of -1 in the return
1871 * struct tells the core to set a default lifespan.
1873 struct rdma_hw_stats *(*alloc_hw_stats)(struct ib_device *device,
1876 * get_hw_stats - Fill in the counter value(s) in the stats struct.
1877 * @index - The index in the value array we wish to have updated, or
1878 * num_counters if we want all stats updated
1880 * < 0 - Error, no counters updated
1881 * index - Updated the single counter pointed to by index
1882 * num_counters - Updated all counters (will reset the timestamp
1883 * and prevent further calls for lifespan milliseconds)
1884 * Drivers are allowed to update all counters in leiu of just the
1885 * one given in index at their option
1887 int (*get_hw_stats)(struct ib_device *device,
1888 struct rdma_hw_stats *stats,
1889 u8 port, int index);
1890 int (*query_device)(struct ib_device *device,
1891 struct ib_device_attr *device_attr,
1892 struct ib_udata *udata);
1893 int (*query_port)(struct ib_device *device,
1895 struct ib_port_attr *port_attr);
1896 enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
1898 /* When calling get_netdev, the HW vendor's driver should return the
1899 * net device of device @device at port @port_num or NULL if such
1900 * a net device doesn't exist. The vendor driver should call dev_hold
1901 * on this net device. The HW vendor's device driver must guarantee
1902 * that this function returns NULL before the net device reaches
1903 * NETDEV_UNREGISTER_FINAL state.
1905 struct net_device *(*get_netdev)(struct ib_device *device,
1907 int (*query_gid)(struct ib_device *device,
1908 u8 port_num, int index,
1910 /* When calling add_gid, the HW vendor's driver should
1911 * add the gid of device @device at gid index @index of
1912 * port @port_num to be @gid. Meta-info of that gid (for example,
1913 * the network device related to this gid is available
1914 * at @attr. @context allows the HW vendor driver to store extra
1915 * information together with a GID entry. The HW vendor may allocate
1916 * memory to contain this information and store it in @context when a
1917 * new GID entry is written to. Params are consistent until the next
1918 * call of add_gid or delete_gid. The function should return 0 on
1919 * success or error otherwise. The function could be called
1920 * concurrently for different ports. This function is only called
1921 * when roce_gid_table is used.
1923 int (*add_gid)(struct ib_device *device,
1926 const union ib_gid *gid,
1927 const struct ib_gid_attr *attr,
1929 /* When calling del_gid, the HW vendor's driver should delete the
1930 * gid of device @device at gid index @index of port @port_num.
1931 * Upon the deletion of a GID entry, the HW vendor must free any
1932 * allocated memory. The caller will clear @context afterwards.
1933 * This function is only called when roce_gid_table is used.
1935 int (*del_gid)(struct ib_device *device,
1939 int (*query_pkey)(struct ib_device *device,
1940 u8 port_num, u16 index, u16 *pkey);
1941 int (*modify_device)(struct ib_device *device,
1942 int device_modify_mask,
1943 struct ib_device_modify *device_modify);
1944 int (*modify_port)(struct ib_device *device,
1945 u8 port_num, int port_modify_mask,
1946 struct ib_port_modify *port_modify);
1947 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
1948 struct ib_udata *udata);
1949 int (*dealloc_ucontext)(struct ib_ucontext *context);
1950 int (*mmap)(struct ib_ucontext *context,
1951 struct vm_area_struct *vma);
1952 struct ib_pd * (*alloc_pd)(struct ib_device *device,
1953 struct ib_ucontext *context,
1954 struct ib_udata *udata);
1955 int (*dealloc_pd)(struct ib_pd *pd);
1956 struct ib_ah * (*create_ah)(struct ib_pd *pd,
1957 struct ib_ah_attr *ah_attr,
1958 struct ib_udata *udata);
1959 int (*modify_ah)(struct ib_ah *ah,
1960 struct ib_ah_attr *ah_attr);
1961 int (*query_ah)(struct ib_ah *ah,
1962 struct ib_ah_attr *ah_attr);
1963 int (*destroy_ah)(struct ib_ah *ah);
1964 struct ib_srq * (*create_srq)(struct ib_pd *pd,
1965 struct ib_srq_init_attr *srq_init_attr,
1966 struct ib_udata *udata);
1967 int (*modify_srq)(struct ib_srq *srq,
1968 struct ib_srq_attr *srq_attr,
1969 enum ib_srq_attr_mask srq_attr_mask,
1970 struct ib_udata *udata);
1971 int (*query_srq)(struct ib_srq *srq,
1972 struct ib_srq_attr *srq_attr);
1973 int (*destroy_srq)(struct ib_srq *srq);
1974 int (*post_srq_recv)(struct ib_srq *srq,
1975 struct ib_recv_wr *recv_wr,
1976 struct ib_recv_wr **bad_recv_wr);
1977 struct ib_qp * (*create_qp)(struct ib_pd *pd,
1978 struct ib_qp_init_attr *qp_init_attr,
1979 struct ib_udata *udata);
1980 int (*modify_qp)(struct ib_qp *qp,
1981 struct ib_qp_attr *qp_attr,
1983 struct ib_udata *udata);
1984 int (*query_qp)(struct ib_qp *qp,
1985 struct ib_qp_attr *qp_attr,
1987 struct ib_qp_init_attr *qp_init_attr);
1988 int (*destroy_qp)(struct ib_qp *qp);
1989 int (*post_send)(struct ib_qp *qp,
1990 struct ib_send_wr *send_wr,
1991 struct ib_send_wr **bad_send_wr);
1992 int (*post_recv)(struct ib_qp *qp,
1993 struct ib_recv_wr *recv_wr,
1994 struct ib_recv_wr **bad_recv_wr);
1995 struct ib_cq * (*create_cq)(struct ib_device *device,
1996 const struct ib_cq_init_attr *attr,
1997 struct ib_ucontext *context,
1998 struct ib_udata *udata);
1999 int (*modify_cq)(struct ib_cq *cq, u16 cq_count,
2001 int (*destroy_cq)(struct ib_cq *cq);
2002 int (*resize_cq)(struct ib_cq *cq, int cqe,
2003 struct ib_udata *udata);
2004 int (*poll_cq)(struct ib_cq *cq, int num_entries,
2006 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
2007 int (*req_notify_cq)(struct ib_cq *cq,
2008 enum ib_cq_notify_flags flags);
2009 int (*req_ncomp_notif)(struct ib_cq *cq,
2011 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
2012 int mr_access_flags);
2013 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
2014 u64 start, u64 length,
2016 int mr_access_flags,
2017 struct ib_udata *udata);
2018 int (*rereg_user_mr)(struct ib_mr *mr,
2020 u64 start, u64 length,
2022 int mr_access_flags,
2024 struct ib_udata *udata);
2025 int (*dereg_mr)(struct ib_mr *mr);
2026 struct ib_mr * (*alloc_mr)(struct ib_pd *pd,
2027 enum ib_mr_type mr_type,
2029 int (*map_mr_sg)(struct ib_mr *mr,
2030 struct scatterlist *sg,
2032 unsigned int *sg_offset);
2033 struct ib_mw * (*alloc_mw)(struct ib_pd *pd,
2034 enum ib_mw_type type,
2035 struct ib_udata *udata);
2036 int (*dealloc_mw)(struct ib_mw *mw);
2037 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
2038 int mr_access_flags,
2039 struct ib_fmr_attr *fmr_attr);
2040 int (*map_phys_fmr)(struct ib_fmr *fmr,
2041 u64 *page_list, int list_len,
2043 int (*unmap_fmr)(struct list_head *fmr_list);
2044 int (*dealloc_fmr)(struct ib_fmr *fmr);
2045 int (*attach_mcast)(struct ib_qp *qp,
2048 int (*detach_mcast)(struct ib_qp *qp,
2051 int (*process_mad)(struct ib_device *device,
2052 int process_mad_flags,
2054 const struct ib_wc *in_wc,
2055 const struct ib_grh *in_grh,
2056 const struct ib_mad_hdr *in_mad,
2058 struct ib_mad_hdr *out_mad,
2059 size_t *out_mad_size,
2060 u16 *out_mad_pkey_index);
2061 struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device,
2062 struct ib_ucontext *ucontext,
2063 struct ib_udata *udata);
2064 int (*dealloc_xrcd)(struct ib_xrcd *xrcd);
2065 struct ib_flow * (*create_flow)(struct ib_qp *qp,
2069 int (*destroy_flow)(struct ib_flow *flow_id);
2070 int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
2071 struct ib_mr_status *mr_status);
2072 void (*disassociate_ucontext)(struct ib_ucontext *ibcontext);
2073 void (*drain_rq)(struct ib_qp *qp);
2074 void (*drain_sq)(struct ib_qp *qp);
2075 int (*set_vf_link_state)(struct ib_device *device, int vf, u8 port,
2077 int (*get_vf_config)(struct ib_device *device, int vf, u8 port,
2078 struct ifla_vf_info *ivf);
2079 int (*get_vf_stats)(struct ib_device *device, int vf, u8 port,
2080 struct ifla_vf_stats *stats);
2081 int (*set_vf_guid)(struct ib_device *device, int vf, u8 port, u64 guid,
2083 struct ib_wq * (*create_wq)(struct ib_pd *pd,
2084 struct ib_wq_init_attr *init_attr,
2085 struct ib_udata *udata);
2086 int (*destroy_wq)(struct ib_wq *wq);
2087 int (*modify_wq)(struct ib_wq *wq,
2088 struct ib_wq_attr *attr,
2090 struct ib_udata *udata);
2091 struct ib_rwq_ind_table * (*create_rwq_ind_table)(struct ib_device *device,
2092 struct ib_rwq_ind_table_init_attr *init_attr,
2093 struct ib_udata *udata);
2094 int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table);
2095 struct ib_dma_mapping_ops *dma_ops;
2097 struct module *owner;
2099 struct kobject *ports_parent;
2100 struct list_head port_list;
2103 IB_DEV_UNINITIALIZED,
2109 u64 uverbs_cmd_mask;
2110 u64 uverbs_ex_cmd_mask;
2112 char node_desc[IB_DEVICE_NODE_DESC_MAX];
2118 struct ib_device_attr attrs;
2119 struct attribute_group *hw_stats_ag;
2120 struct rdma_hw_stats *hw_stats;
2123 * The following mandatory functions are used only at device
2124 * registration. Keep functions such as these at the end of this
2125 * structure to avoid cache line misses when accessing struct ib_device
2128 int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *);
2129 void (*get_dev_fw_str)(struct ib_device *, char *str, size_t str_len);
2134 void (*add) (struct ib_device *);
2135 void (*remove)(struct ib_device *, void *client_data);
2137 /* Returns the net_dev belonging to this ib_client and matching the
2139 * @dev: An RDMA device that the net_dev use for communication.
2140 * @port: A physical port number on the RDMA device.
2141 * @pkey: P_Key that the net_dev uses if applicable.
2142 * @gid: A GID that the net_dev uses to communicate.
2143 * @addr: An IP address the net_dev is configured with.
2144 * @client_data: The device's client data set by ib_set_client_data().
2146 * An ib_client that implements a net_dev on top of RDMA devices
2147 * (such as IP over IB) should implement this callback, allowing the
2148 * rdma_cm module to find the right net_dev for a given request.
2150 * The caller is responsible for calling dev_put on the returned
2152 struct net_device *(*get_net_dev_by_params)(
2153 struct ib_device *dev,
2156 const union ib_gid *gid,
2157 const struct sockaddr *addr,
2159 struct list_head list;
2162 struct ib_device *ib_alloc_device(size_t size);
2163 void ib_dealloc_device(struct ib_device *device);
2165 void ib_get_device_fw_str(struct ib_device *device, char *str, size_t str_len);
2167 int ib_register_device(struct ib_device *device,
2168 int (*port_callback)(struct ib_device *,
2169 u8, struct kobject *));
2170 void ib_unregister_device(struct ib_device *device);
2172 int ib_register_client (struct ib_client *client);
2173 void ib_unregister_client(struct ib_client *client);
2175 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
2176 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
2179 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
2181 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
2184 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
2186 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
2189 static inline bool ib_is_udata_cleared(struct ib_udata *udata,
2193 const void __user *p = udata->inbuf + offset;
2197 if (len > USHRT_MAX)
2200 buf = memdup_user(p, len);
2204 ret = !memchr_inv(buf, 0, len);
2210 * ib_modify_qp_is_ok - Check that the supplied attribute mask
2211 * contains all required attributes and no attributes not allowed for
2212 * the given QP state transition.
2213 * @cur_state: Current QP state
2214 * @next_state: Next QP state
2216 * @mask: Mask of supplied QP attributes
2217 * @ll : link layer of port
2219 * This function is a helper function that a low-level driver's
2220 * modify_qp method can use to validate the consumer's input. It
2221 * checks that cur_state and next_state are valid QP states, that a
2222 * transition from cur_state to next_state is allowed by the IB spec,
2223 * and that the attribute mask supplied is allowed for the transition.
2225 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
2226 enum ib_qp_type type, enum ib_qp_attr_mask mask,
2227 enum rdma_link_layer ll);
2229 int ib_register_event_handler (struct ib_event_handler *event_handler);
2230 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
2231 void ib_dispatch_event(struct ib_event *event);
2233 int ib_query_port(struct ib_device *device,
2234 u8 port_num, struct ib_port_attr *port_attr);
2236 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
2240 * rdma_cap_ib_switch - Check if the device is IB switch
2241 * @device: Device to check
2243 * Device driver is responsible for setting is_switch bit on
2244 * in ib_device structure at init time.
2246 * Return: true if the device is IB switch.
2248 static inline bool rdma_cap_ib_switch(const struct ib_device *device)
2250 return device->is_switch;
2254 * rdma_start_port - Return the first valid port number for the device
2257 * @device: Device to be checked
2259 * Return start port number
2261 static inline u8 rdma_start_port(const struct ib_device *device)
2263 return rdma_cap_ib_switch(device) ? 0 : 1;
2267 * rdma_end_port - Return the last valid port number for the device
2270 * @device: Device to be checked
2272 * Return last port number
2274 static inline u8 rdma_end_port(const struct ib_device *device)
2276 return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt;
2279 static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num)
2281 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB;
2284 static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num)
2286 return device->port_immutable[port_num].core_cap_flags &
2287 (RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP);
2290 static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, u8 port_num)
2292 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
2295 static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, u8 port_num)
2297 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE;
2300 static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num)
2302 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP;
2305 static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num)
2307 return rdma_protocol_ib(device, port_num) ||
2308 rdma_protocol_roce(device, port_num);
2312 * rdma_cap_ib_mad - Check if the port of a device supports Infiniband
2313 * Management Datagrams.
2314 * @device: Device to check
2315 * @port_num: Port number to check
2317 * Management Datagrams (MAD) are a required part of the InfiniBand
2318 * specification and are supported on all InfiniBand devices. A slightly
2319 * extended version are also supported on OPA interfaces.
2321 * Return: true if the port supports sending/receiving of MAD packets.
2323 static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num)
2325 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_MAD;
2329 * rdma_cap_opa_mad - Check if the port of device provides support for OPA
2330 * Management Datagrams.
2331 * @device: Device to check
2332 * @port_num: Port number to check
2334 * Intel OmniPath devices extend and/or replace the InfiniBand Management
2335 * datagrams with their own versions. These OPA MADs share many but not all of
2336 * the characteristics of InfiniBand MADs.
2338 * OPA MADs differ in the following ways:
2340 * 1) MADs are variable size up to 2K
2341 * IBTA defined MADs remain fixed at 256 bytes
2342 * 2) OPA SMPs must carry valid PKeys
2343 * 3) OPA SMP packets are a different format
2345 * Return: true if the port supports OPA MAD packet formats.
2347 static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num)
2349 return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD)
2350 == RDMA_CORE_CAP_OPA_MAD;
2354 * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband
2355 * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI).
2356 * @device: Device to check
2357 * @port_num: Port number to check
2359 * Each InfiniBand node is required to provide a Subnet Management Agent
2360 * that the subnet manager can access. Prior to the fabric being fully
2361 * configured by the subnet manager, the SMA is accessed via a well known
2362 * interface called the Subnet Management Interface (SMI). This interface
2363 * uses directed route packets to communicate with the SM to get around the
2364 * chicken and egg problem of the SM needing to know what's on the fabric
2365 * in order to configure the fabric, and needing to configure the fabric in
2366 * order to send packets to the devices on the fabric. These directed
2367 * route packets do not need the fabric fully configured in order to reach
2368 * their destination. The SMI is the only method allowed to send
2369 * directed route packets on an InfiniBand fabric.
2371 * Return: true if the port provides an SMI.
2373 static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num)
2375 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SMI;
2379 * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband
2380 * Communication Manager.
2381 * @device: Device to check
2382 * @port_num: Port number to check
2384 * The InfiniBand Communication Manager is one of many pre-defined General
2385 * Service Agents (GSA) that are accessed via the General Service
2386 * Interface (GSI). It's role is to facilitate establishment of connections
2387 * between nodes as well as other management related tasks for established
2390 * Return: true if the port supports an IB CM (this does not guarantee that
2391 * a CM is actually running however).
2393 static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num)
2395 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_CM;
2399 * rdma_cap_iw_cm - Check if the port of device has the capability IWARP
2400 * Communication Manager.
2401 * @device: Device to check
2402 * @port_num: Port number to check
2404 * Similar to above, but specific to iWARP connections which have a different
2405 * managment protocol than InfiniBand.
2407 * Return: true if the port supports an iWARP CM (this does not guarantee that
2408 * a CM is actually running however).
2410 static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num)
2412 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IW_CM;
2416 * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband
2417 * Subnet Administration.
2418 * @device: Device to check
2419 * @port_num: Port number to check
2421 * An InfiniBand Subnet Administration (SA) service is a pre-defined General
2422 * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand
2423 * fabrics, devices should resolve routes to other hosts by contacting the
2424 * SA to query the proper route.
2426 * Return: true if the port should act as a client to the fabric Subnet
2427 * Administration interface. This does not imply that the SA service is
2430 static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num)
2432 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SA;
2436 * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband
2438 * @device: Device to check
2439 * @port_num: Port number to check
2441 * InfiniBand multicast registration is more complex than normal IPv4 or
2442 * IPv6 multicast registration. Each Host Channel Adapter must register
2443 * with the Subnet Manager when it wishes to join a multicast group. It
2444 * should do so only once regardless of how many queue pairs it subscribes
2445 * to this group. And it should leave the group only after all queue pairs
2446 * attached to the group have been detached.
2448 * Return: true if the port must undertake the additional adminstrative
2449 * overhead of registering/unregistering with the SM and tracking of the
2450 * total number of queue pairs attached to the multicast group.
2452 static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num)
2454 return rdma_cap_ib_sa(device, port_num);
2458 * rdma_cap_af_ib - Check if the port of device has the capability
2459 * Native Infiniband Address.
2460 * @device: Device to check
2461 * @port_num: Port number to check
2463 * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default
2464 * GID. RoCE uses a different mechanism, but still generates a GID via
2465 * a prescribed mechanism and port specific data.
2467 * Return: true if the port uses a GID address to identify devices on the
2470 static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num)
2472 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_AF_IB;
2476 * rdma_cap_eth_ah - Check if the port of device has the capability
2477 * Ethernet Address Handle.
2478 * @device: Device to check
2479 * @port_num: Port number to check
2481 * RoCE is InfiniBand over Ethernet, and it uses a well defined technique
2482 * to fabricate GIDs over Ethernet/IP specific addresses native to the
2483 * port. Normally, packet headers are generated by the sending host
2484 * adapter, but when sending connectionless datagrams, we must manually
2485 * inject the proper headers for the fabric we are communicating over.
2487 * Return: true if we are running as a RoCE port and must force the
2488 * addition of a Global Route Header built from our Ethernet Address
2489 * Handle into our header list for connectionless packets.
2491 static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num)
2493 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_AH;
2497 * rdma_max_mad_size - Return the max MAD size required by this RDMA Port.
2500 * @port_num: Port number
2502 * This MAD size includes the MAD headers and MAD payload. No other headers
2505 * Return the max MAD size required by the Port. Will return 0 if the port
2506 * does not support MADs
2508 static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num)
2510 return device->port_immutable[port_num].max_mad_size;
2514 * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table
2515 * @device: Device to check
2516 * @port_num: Port number to check
2518 * RoCE GID table mechanism manages the various GIDs for a device.
2520 * NOTE: if allocating the port's GID table has failed, this call will still
2521 * return true, but any RoCE GID table API will fail.
2523 * Return: true if the port uses RoCE GID table mechanism in order to manage
2526 static inline bool rdma_cap_roce_gid_table(const struct ib_device *device,
2529 return rdma_protocol_roce(device, port_num) &&
2530 device->add_gid && device->del_gid;
2534 * Check if the device supports READ W/ INVALIDATE.
2536 static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num)
2539 * iWarp drivers must support READ W/ INVALIDATE. No other protocol
2540 * has support for it yet.
2542 return rdma_protocol_iwarp(dev, port_num);
2545 int ib_query_gid(struct ib_device *device,
2546 u8 port_num, int index, union ib_gid *gid,
2547 struct ib_gid_attr *attr);
2549 int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port,
2551 int ib_get_vf_config(struct ib_device *device, int vf, u8 port,
2552 struct ifla_vf_info *info);
2553 int ib_get_vf_stats(struct ib_device *device, int vf, u8 port,
2554 struct ifla_vf_stats *stats);
2555 int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid,
2558 int ib_query_pkey(struct ib_device *device,
2559 u8 port_num, u16 index, u16 *pkey);
2561 int ib_modify_device(struct ib_device *device,
2562 int device_modify_mask,
2563 struct ib_device_modify *device_modify);
2565 int ib_modify_port(struct ib_device *device,
2566 u8 port_num, int port_modify_mask,
2567 struct ib_port_modify *port_modify);
2569 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
2570 enum ib_gid_type gid_type, struct net_device *ndev,
2571 u8 *port_num, u16 *index);
2573 int ib_find_pkey(struct ib_device *device,
2574 u8 port_num, u16 pkey, u16 *index);
2578 * Create a memory registration for all memory in the system and place
2579 * the rkey for it into pd->unsafe_global_rkey. This can be used by
2580 * ULPs to avoid the overhead of dynamic MRs.
2582 * This flag is generally considered unsafe and must only be used in
2583 * extremly trusted environments. Every use of it will log a warning
2584 * in the kernel log.
2586 IB_PD_UNSAFE_GLOBAL_RKEY = 0x01,
2589 struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags,
2590 const char *caller);
2591 #define ib_alloc_pd(device, flags) \
2592 __ib_alloc_pd((device), (flags), __func__)
2593 void ib_dealloc_pd(struct ib_pd *pd);
2596 * ib_create_ah - Creates an address handle for the given address vector.
2597 * @pd: The protection domain associated with the address handle.
2598 * @ah_attr: The attributes of the address vector.
2600 * The address handle is used to reference a local or global destination
2601 * in all UD QP post sends.
2603 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
2606 * ib_get_gids_from_rdma_hdr - Get sgid and dgid from GRH or IPv4 header
2608 * @hdr: the L3 header to parse
2609 * @net_type: type of header to parse
2610 * @sgid: place to store source gid
2611 * @dgid: place to store destination gid
2613 int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr,
2614 enum rdma_network_type net_type,
2615 union ib_gid *sgid, union ib_gid *dgid);
2618 * ib_get_rdma_header_version - Get the header version
2619 * @hdr: the L3 header to parse
2621 int ib_get_rdma_header_version(const union rdma_network_hdr *hdr);
2624 * ib_init_ah_from_wc - Initializes address handle attributes from a
2626 * @device: Device on which the received message arrived.
2627 * @port_num: Port on which the received message arrived.
2628 * @wc: Work completion associated with the received message.
2629 * @grh: References the received global route header. This parameter is
2630 * ignored unless the work completion indicates that the GRH is valid.
2631 * @ah_attr: Returned attributes that can be used when creating an address
2632 * handle for replying to the message.
2634 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num,
2635 const struct ib_wc *wc, const struct ib_grh *grh,
2636 struct ib_ah_attr *ah_attr);
2639 * ib_create_ah_from_wc - Creates an address handle associated with the
2640 * sender of the specified work completion.
2641 * @pd: The protection domain associated with the address handle.
2642 * @wc: Work completion information associated with a received message.
2643 * @grh: References the received global route header. This parameter is
2644 * ignored unless the work completion indicates that the GRH is valid.
2645 * @port_num: The outbound port number to associate with the address.
2647 * The address handle is used to reference a local or global destination
2648 * in all UD QP post sends.
2650 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc,
2651 const struct ib_grh *grh, u8 port_num);
2654 * ib_modify_ah - Modifies the address vector associated with an address
2656 * @ah: The address handle to modify.
2657 * @ah_attr: The new address vector attributes to associate with the
2660 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
2663 * ib_query_ah - Queries the address vector associated with an address
2665 * @ah: The address handle to query.
2666 * @ah_attr: The address vector attributes associated with the address
2669 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
2672 * ib_destroy_ah - Destroys an address handle.
2673 * @ah: The address handle to destroy.
2675 int ib_destroy_ah(struct ib_ah *ah);
2678 * ib_create_srq - Creates a SRQ associated with the specified protection
2680 * @pd: The protection domain associated with the SRQ.
2681 * @srq_init_attr: A list of initial attributes required to create the
2682 * SRQ. If SRQ creation succeeds, then the attributes are updated to
2683 * the actual capabilities of the created SRQ.
2685 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
2686 * requested size of the SRQ, and set to the actual values allocated
2687 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
2688 * will always be at least as large as the requested values.
2690 struct ib_srq *ib_create_srq(struct ib_pd *pd,
2691 struct ib_srq_init_attr *srq_init_attr);
2694 * ib_modify_srq - Modifies the attributes for the specified SRQ.
2695 * @srq: The SRQ to modify.
2696 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
2697 * the current values of selected SRQ attributes are returned.
2698 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
2699 * are being modified.
2701 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
2702 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
2703 * the number of receives queued drops below the limit.
2705 int ib_modify_srq(struct ib_srq *srq,
2706 struct ib_srq_attr *srq_attr,
2707 enum ib_srq_attr_mask srq_attr_mask);
2710 * ib_query_srq - Returns the attribute list and current values for the
2712 * @srq: The SRQ to query.
2713 * @srq_attr: The attributes of the specified SRQ.
2715 int ib_query_srq(struct ib_srq *srq,
2716 struct ib_srq_attr *srq_attr);
2719 * ib_destroy_srq - Destroys the specified SRQ.
2720 * @srq: The SRQ to destroy.
2722 int ib_destroy_srq(struct ib_srq *srq);
2725 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
2726 * @srq: The SRQ to post the work request on.
2727 * @recv_wr: A list of work requests to post on the receive queue.
2728 * @bad_recv_wr: On an immediate failure, this parameter will reference
2729 * the work request that failed to be posted on the QP.
2731 static inline int ib_post_srq_recv(struct ib_srq *srq,
2732 struct ib_recv_wr *recv_wr,
2733 struct ib_recv_wr **bad_recv_wr)
2735 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
2739 * ib_create_qp - Creates a QP associated with the specified protection
2741 * @pd: The protection domain associated with the QP.
2742 * @qp_init_attr: A list of initial attributes required to create the
2743 * QP. If QP creation succeeds, then the attributes are updated to
2744 * the actual capabilities of the created QP.
2746 struct ib_qp *ib_create_qp(struct ib_pd *pd,
2747 struct ib_qp_init_attr *qp_init_attr);
2750 * ib_modify_qp - Modifies the attributes for the specified QP and then
2751 * transitions the QP to the given state.
2752 * @qp: The QP to modify.
2753 * @qp_attr: On input, specifies the QP attributes to modify. On output,
2754 * the current values of selected QP attributes are returned.
2755 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
2756 * are being modified.
2758 int ib_modify_qp(struct ib_qp *qp,
2759 struct ib_qp_attr *qp_attr,
2763 * ib_query_qp - Returns the attribute list and current values for the
2765 * @qp: The QP to query.
2766 * @qp_attr: The attributes of the specified QP.
2767 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
2768 * @qp_init_attr: Additional attributes of the selected QP.
2770 * The qp_attr_mask may be used to limit the query to gathering only the
2771 * selected attributes.
2773 int ib_query_qp(struct ib_qp *qp,
2774 struct ib_qp_attr *qp_attr,
2776 struct ib_qp_init_attr *qp_init_attr);
2779 * ib_destroy_qp - Destroys the specified QP.
2780 * @qp: The QP to destroy.
2782 int ib_destroy_qp(struct ib_qp *qp);
2785 * ib_open_qp - Obtain a reference to an existing sharable QP.
2786 * @xrcd - XRC domain
2787 * @qp_open_attr: Attributes identifying the QP to open.
2789 * Returns a reference to a sharable QP.
2791 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
2792 struct ib_qp_open_attr *qp_open_attr);
2795 * ib_close_qp - Release an external reference to a QP.
2796 * @qp: The QP handle to release
2798 * The opened QP handle is released by the caller. The underlying
2799 * shared QP is not destroyed until all internal references are released.
2801 int ib_close_qp(struct ib_qp *qp);
2804 * ib_post_send - Posts a list of work requests to the send queue of
2806 * @qp: The QP to post the work request on.
2807 * @send_wr: A list of work requests to post on the send queue.
2808 * @bad_send_wr: On an immediate failure, this parameter will reference
2809 * the work request that failed to be posted on the QP.
2811 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
2812 * error is returned, the QP state shall not be affected,
2813 * ib_post_send() will return an immediate error after queueing any
2814 * earlier work requests in the list.
2816 static inline int ib_post_send(struct ib_qp *qp,
2817 struct ib_send_wr *send_wr,
2818 struct ib_send_wr **bad_send_wr)
2820 return qp->device->post_send(qp, send_wr, bad_send_wr);
2824 * ib_post_recv - Posts a list of work requests to the receive queue of
2826 * @qp: The QP to post the work request on.
2827 * @recv_wr: A list of work requests to post on the receive queue.
2828 * @bad_recv_wr: On an immediate failure, this parameter will reference
2829 * the work request that failed to be posted on the QP.
2831 static inline int ib_post_recv(struct ib_qp *qp,
2832 struct ib_recv_wr *recv_wr,
2833 struct ib_recv_wr **bad_recv_wr)
2835 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
2838 struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private,
2839 int nr_cqe, int comp_vector, enum ib_poll_context poll_ctx);
2840 void ib_free_cq(struct ib_cq *cq);
2841 int ib_process_cq_direct(struct ib_cq *cq, int budget);
2844 * ib_create_cq - Creates a CQ on the specified device.
2845 * @device: The device on which to create the CQ.
2846 * @comp_handler: A user-specified callback that is invoked when a
2847 * completion event occurs on the CQ.
2848 * @event_handler: A user-specified callback that is invoked when an
2849 * asynchronous event not associated with a completion occurs on the CQ.
2850 * @cq_context: Context associated with the CQ returned to the user via
2851 * the associated completion and event handlers.
2852 * @cq_attr: The attributes the CQ should be created upon.
2854 * Users can examine the cq structure to determine the actual CQ size.
2856 struct ib_cq *ib_create_cq(struct ib_device *device,
2857 ib_comp_handler comp_handler,
2858 void (*event_handler)(struct ib_event *, void *),
2860 const struct ib_cq_init_attr *cq_attr);
2863 * ib_resize_cq - Modifies the capacity of the CQ.
2864 * @cq: The CQ to resize.
2865 * @cqe: The minimum size of the CQ.
2867 * Users can examine the cq structure to determine the actual CQ size.
2869 int ib_resize_cq(struct ib_cq *cq, int cqe);
2872 * ib_modify_cq - Modifies moderation params of the CQ
2873 * @cq: The CQ to modify.
2874 * @cq_count: number of CQEs that will trigger an event
2875 * @cq_period: max period of time in usec before triggering an event
2878 int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
2881 * ib_destroy_cq - Destroys the specified CQ.
2882 * @cq: The CQ to destroy.
2884 int ib_destroy_cq(struct ib_cq *cq);
2887 * ib_poll_cq - poll a CQ for completion(s)
2888 * @cq:the CQ being polled
2889 * @num_entries:maximum number of completions to return
2890 * @wc:array of at least @num_entries &struct ib_wc where completions
2893 * Poll a CQ for (possibly multiple) completions. If the return value
2894 * is < 0, an error occurred. If the return value is >= 0, it is the
2895 * number of completions returned. If the return value is
2896 * non-negative and < num_entries, then the CQ was emptied.
2898 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
2901 return cq->device->poll_cq(cq, num_entries, wc);
2905 * ib_peek_cq - Returns the number of unreaped completions currently
2906 * on the specified CQ.
2907 * @cq: The CQ to peek.
2908 * @wc_cnt: A minimum number of unreaped completions to check for.
2910 * If the number of unreaped completions is greater than or equal to wc_cnt,
2911 * this function returns wc_cnt, otherwise, it returns the actual number of
2912 * unreaped completions.
2914 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
2917 * ib_req_notify_cq - Request completion notification on a CQ.
2918 * @cq: The CQ to generate an event for.
2920 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
2921 * to request an event on the next solicited event or next work
2922 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
2923 * may also be |ed in to request a hint about missed events, as
2927 * < 0 means an error occurred while requesting notification
2928 * == 0 means notification was requested successfully, and if
2929 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
2930 * were missed and it is safe to wait for another event. In
2931 * this case is it guaranteed that any work completions added
2932 * to the CQ since the last CQ poll will trigger a completion
2933 * notification event.
2934 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
2935 * in. It means that the consumer must poll the CQ again to
2936 * make sure it is empty to avoid missing an event because of a
2937 * race between requesting notification and an entry being
2938 * added to the CQ. This return value means it is possible
2939 * (but not guaranteed) that a work completion has been added
2940 * to the CQ since the last poll without triggering a
2941 * completion notification event.
2943 static inline int ib_req_notify_cq(struct ib_cq *cq,
2944 enum ib_cq_notify_flags flags)
2946 return cq->device->req_notify_cq(cq, flags);
2950 * ib_req_ncomp_notif - Request completion notification when there are
2951 * at least the specified number of unreaped completions on the CQ.
2952 * @cq: The CQ to generate an event for.
2953 * @wc_cnt: The number of unreaped completions that should be on the
2954 * CQ before an event is generated.
2956 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
2958 return cq->device->req_ncomp_notif ?
2959 cq->device->req_ncomp_notif(cq, wc_cnt) :
2964 * ib_dma_mapping_error - check a DMA addr for error
2965 * @dev: The device for which the dma_addr was created
2966 * @dma_addr: The DMA address to check
2968 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
2971 return dev->dma_ops->mapping_error(dev, dma_addr);
2972 return dma_mapping_error(dev->dma_device, dma_addr);
2976 * ib_dma_map_single - Map a kernel virtual address to DMA address
2977 * @dev: The device for which the dma_addr is to be created
2978 * @cpu_addr: The kernel virtual address
2979 * @size: The size of the region in bytes
2980 * @direction: The direction of the DMA
2982 static inline u64 ib_dma_map_single(struct ib_device *dev,
2983 void *cpu_addr, size_t size,
2984 enum dma_data_direction direction)
2987 return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
2988 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
2992 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
2993 * @dev: The device for which the DMA address was created
2994 * @addr: The DMA address
2995 * @size: The size of the region in bytes
2996 * @direction: The direction of the DMA
2998 static inline void ib_dma_unmap_single(struct ib_device *dev,
2999 u64 addr, size_t size,
3000 enum dma_data_direction direction)
3003 dev->dma_ops->unmap_single(dev, addr, size, direction);
3005 dma_unmap_single(dev->dma_device, addr, size, direction);
3009 * ib_dma_map_page - Map a physical page to DMA address
3010 * @dev: The device for which the dma_addr is to be created
3011 * @page: The page to be mapped
3012 * @offset: The offset within the page
3013 * @size: The size of the region in bytes
3014 * @direction: The direction of the DMA
3016 static inline u64 ib_dma_map_page(struct ib_device *dev,
3018 unsigned long offset,
3020 enum dma_data_direction direction)
3023 return dev->dma_ops->map_page(dev, page, offset, size, direction);
3024 return dma_map_page(dev->dma_device, page, offset, size, direction);
3028 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
3029 * @dev: The device for which the DMA address was created
3030 * @addr: The DMA address
3031 * @size: The size of the region in bytes
3032 * @direction: The direction of the DMA
3034 static inline void ib_dma_unmap_page(struct ib_device *dev,
3035 u64 addr, size_t size,
3036 enum dma_data_direction direction)
3039 dev->dma_ops->unmap_page(dev, addr, size, direction);
3041 dma_unmap_page(dev->dma_device, addr, size, direction);
3045 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
3046 * @dev: The device for which the DMA addresses are to be created
3047 * @sg: The array of scatter/gather entries
3048 * @nents: The number of scatter/gather entries
3049 * @direction: The direction of the DMA
3051 static inline int ib_dma_map_sg(struct ib_device *dev,
3052 struct scatterlist *sg, int nents,
3053 enum dma_data_direction direction)
3056 return dev->dma_ops->map_sg(dev, sg, nents, direction);
3057 return dma_map_sg(dev->dma_device, sg, nents, direction);
3061 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
3062 * @dev: The device for which the DMA addresses were created
3063 * @sg: The array of scatter/gather entries
3064 * @nents: The number of scatter/gather entries
3065 * @direction: The direction of the DMA
3067 static inline void ib_dma_unmap_sg(struct ib_device *dev,
3068 struct scatterlist *sg, int nents,
3069 enum dma_data_direction direction)
3072 dev->dma_ops->unmap_sg(dev, sg, nents, direction);
3074 dma_unmap_sg(dev->dma_device, sg, nents, direction);
3077 static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
3078 struct scatterlist *sg, int nents,
3079 enum dma_data_direction direction,
3080 unsigned long dma_attrs)
3083 return dev->dma_ops->map_sg_attrs(dev, sg, nents, direction,
3086 return dma_map_sg_attrs(dev->dma_device, sg, nents, direction,
3090 static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
3091 struct scatterlist *sg, int nents,
3092 enum dma_data_direction direction,
3093 unsigned long dma_attrs)
3096 return dev->dma_ops->unmap_sg_attrs(dev, sg, nents, direction,
3099 dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction,
3103 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
3104 * @dev: The device for which the DMA addresses were created
3105 * @sg: The scatter/gather entry
3107 * Note: this function is obsolete. To do: change all occurrences of
3108 * ib_sg_dma_address() into sg_dma_address().
3110 static inline u64 ib_sg_dma_address(struct ib_device *dev,
3111 struct scatterlist *sg)
3113 return sg_dma_address(sg);
3117 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
3118 * @dev: The device for which the DMA addresses were created
3119 * @sg: The scatter/gather entry
3121 * Note: this function is obsolete. To do: change all occurrences of
3122 * ib_sg_dma_len() into sg_dma_len().
3124 static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
3125 struct scatterlist *sg)
3127 return sg_dma_len(sg);
3131 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
3132 * @dev: The device for which the DMA address was created
3133 * @addr: The DMA address
3134 * @size: The size of the region in bytes
3135 * @dir: The direction of the DMA
3137 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
3140 enum dma_data_direction dir)
3143 dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
3145 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
3149 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
3150 * @dev: The device for which the DMA address was created
3151 * @addr: The DMA address
3152 * @size: The size of the region in bytes
3153 * @dir: The direction of the DMA
3155 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
3158 enum dma_data_direction dir)
3161 dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
3163 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
3167 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
3168 * @dev: The device for which the DMA address is requested
3169 * @size: The size of the region to allocate in bytes
3170 * @dma_handle: A pointer for returning the DMA address of the region
3171 * @flag: memory allocator flags
3173 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
3179 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
3184 ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
3185 *dma_handle = handle;
3191 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
3192 * @dev: The device for which the DMA addresses were allocated
3193 * @size: The size of the region
3194 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
3195 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
3197 static inline void ib_dma_free_coherent(struct ib_device *dev,
3198 size_t size, void *cpu_addr,
3202 dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
3204 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
3208 * ib_dereg_mr - Deregisters a memory region and removes it from the
3209 * HCA translation table.
3210 * @mr: The memory region to deregister.
3212 * This function can fail, if the memory region has memory windows bound to it.
3214 int ib_dereg_mr(struct ib_mr *mr);
3216 struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
3217 enum ib_mr_type mr_type,
3221 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
3223 * @mr - struct ib_mr pointer to be updated.
3224 * @newkey - new key to be used.
3226 static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey)
3228 mr->lkey = (mr->lkey & 0xffffff00) | newkey;
3229 mr->rkey = (mr->rkey & 0xffffff00) | newkey;
3233 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
3234 * for calculating a new rkey for type 2 memory windows.
3235 * @rkey - the rkey to increment.
3237 static inline u32 ib_inc_rkey(u32 rkey)
3239 const u32 mask = 0x000000ff;
3240 return ((rkey + 1) & mask) | (rkey & ~mask);
3244 * ib_alloc_fmr - Allocates a unmapped fast memory region.
3245 * @pd: The protection domain associated with the unmapped region.
3246 * @mr_access_flags: Specifies the memory access rights.
3247 * @fmr_attr: Attributes of the unmapped region.
3249 * A fast memory region must be mapped before it can be used as part of
3252 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
3253 int mr_access_flags,
3254 struct ib_fmr_attr *fmr_attr);
3257 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
3258 * @fmr: The fast memory region to associate with the pages.
3259 * @page_list: An array of physical pages to map to the fast memory region.
3260 * @list_len: The number of pages in page_list.
3261 * @iova: The I/O virtual address to use with the mapped region.
3263 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
3264 u64 *page_list, int list_len,
3267 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
3271 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
3272 * @fmr_list: A linked list of fast memory regions to unmap.
3274 int ib_unmap_fmr(struct list_head *fmr_list);
3277 * ib_dealloc_fmr - Deallocates a fast memory region.
3278 * @fmr: The fast memory region to deallocate.
3280 int ib_dealloc_fmr(struct ib_fmr *fmr);
3283 * ib_attach_mcast - Attaches the specified QP to a multicast group.
3284 * @qp: QP to attach to the multicast group. The QP must be type
3286 * @gid: Multicast group GID.
3287 * @lid: Multicast group LID in host byte order.
3289 * In order to send and receive multicast packets, subnet
3290 * administration must have created the multicast group and configured
3291 * the fabric appropriately. The port associated with the specified
3292 * QP must also be a member of the multicast group.
3294 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
3297 * ib_detach_mcast - Detaches the specified QP from a multicast group.
3298 * @qp: QP to detach from the multicast group.
3299 * @gid: Multicast group GID.
3300 * @lid: Multicast group LID in host byte order.
3302 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
3305 * ib_alloc_xrcd - Allocates an XRC domain.
3306 * @device: The device on which to allocate the XRC domain.
3308 struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device);
3311 * ib_dealloc_xrcd - Deallocates an XRC domain.
3312 * @xrcd: The XRC domain to deallocate.
3314 int ib_dealloc_xrcd(struct ib_xrcd *xrcd);
3316 struct ib_flow *ib_create_flow(struct ib_qp *qp,
3317 struct ib_flow_attr *flow_attr, int domain);
3318 int ib_destroy_flow(struct ib_flow *flow_id);
3320 static inline int ib_check_mr_access(int flags)
3323 * Local write permission is required if remote write or
3324 * remote atomic permission is also requested.
3326 if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
3327 !(flags & IB_ACCESS_LOCAL_WRITE))
3334 * ib_check_mr_status: lightweight check of MR status.
3335 * This routine may provide status checks on a selected
3336 * ib_mr. first use is for signature status check.
3338 * @mr: A memory region.
3339 * @check_mask: Bitmask of which checks to perform from
3340 * ib_mr_status_check enumeration.
3341 * @mr_status: The container of relevant status checks.
3342 * failed checks will be indicated in the status bitmask
3343 * and the relevant info shall be in the error item.
3345 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
3346 struct ib_mr_status *mr_status);
3348 struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port,
3349 u16 pkey, const union ib_gid *gid,
3350 const struct sockaddr *addr);
3351 struct ib_wq *ib_create_wq(struct ib_pd *pd,
3352 struct ib_wq_init_attr *init_attr);
3353 int ib_destroy_wq(struct ib_wq *wq);
3354 int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *attr,
3356 struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device,
3357 struct ib_rwq_ind_table_init_attr*
3358 wq_ind_table_init_attr);
3359 int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);
3361 int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
3362 unsigned int *sg_offset, unsigned int page_size);
3365 ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
3366 unsigned int *sg_offset, unsigned int page_size)
3370 n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size);
3376 int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents,
3377 unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64));
3379 void ib_drain_rq(struct ib_qp *qp);
3380 void ib_drain_sq(struct ib_qp *qp);
3381 void ib_drain_qp(struct ib_qp *qp);
3383 int ib_resolve_eth_dmac(struct ib_device *device,
3384 struct ib_ah_attr *ah_attr);
3385 #endif /* IB_VERBS_H */