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 /* Deprecated. Please use IB_RAW_PACKET_CAP_IP_CSUM. */
211 IB_DEVICE_RAW_IP_CSUM = (1 << 26),
213 * Devices should set IB_DEVICE_CROSS_CHANNEL if they
214 * support execution of WQEs that involve synchronization
215 * of I/O operations with single completion queue managed
218 IB_DEVICE_CROSS_CHANNEL = (1 << 27),
219 IB_DEVICE_MANAGED_FLOW_STEERING = (1 << 29),
220 IB_DEVICE_SIGNATURE_HANDOVER = (1 << 30),
221 IB_DEVICE_ON_DEMAND_PAGING = (1ULL << 31),
222 IB_DEVICE_SG_GAPS_REG = (1ULL << 32),
223 IB_DEVICE_VIRTUAL_FUNCTION = (1ULL << 33),
224 /* Deprecated. Please use IB_RAW_PACKET_CAP_SCATTER_FCS. */
225 IB_DEVICE_RAW_SCATTER_FCS = (1ULL << 34),
228 enum ib_signature_prot_cap {
229 IB_PROT_T10DIF_TYPE_1 = 1,
230 IB_PROT_T10DIF_TYPE_2 = 1 << 1,
231 IB_PROT_T10DIF_TYPE_3 = 1 << 2,
234 enum ib_signature_guard_cap {
235 IB_GUARD_T10DIF_CRC = 1,
236 IB_GUARD_T10DIF_CSUM = 1 << 1,
245 enum ib_odp_general_cap_bits {
246 IB_ODP_SUPPORT = 1 << 0,
247 IB_ODP_SUPPORT_IMPLICIT = 1 << 1,
250 enum ib_odp_transport_cap_bits {
251 IB_ODP_SUPPORT_SEND = 1 << 0,
252 IB_ODP_SUPPORT_RECV = 1 << 1,
253 IB_ODP_SUPPORT_WRITE = 1 << 2,
254 IB_ODP_SUPPORT_READ = 1 << 3,
255 IB_ODP_SUPPORT_ATOMIC = 1 << 4,
259 uint64_t general_caps;
261 uint32_t rc_odp_caps;
262 uint32_t uc_odp_caps;
263 uint32_t ud_odp_caps;
264 } per_transport_caps;
268 /* Corresponding bit will be set if qp type from
269 * 'enum ib_qp_type' is supported, e.g.
270 * supported_qpts |= 1 << IB_QPT_UD
273 u32 max_rwq_indirection_tables;
274 u32 max_rwq_indirection_table_size;
277 enum ib_cq_creation_flags {
278 IB_CQ_FLAGS_TIMESTAMP_COMPLETION = 1 << 0,
279 IB_CQ_FLAGS_IGNORE_OVERRUN = 1 << 1,
282 struct ib_cq_init_attr {
288 struct ib_device_attr {
290 __be64 sys_image_guid;
298 u64 device_cap_flags;
308 int max_qp_init_rd_atom;
309 int max_ee_init_rd_atom;
310 enum ib_atomic_cap atomic_cap;
311 enum ib_atomic_cap masked_atomic_cap;
318 int max_mcast_qp_attach;
319 int max_total_mcast_qp_attach;
326 unsigned int max_fast_reg_page_list_len;
328 u8 local_ca_ack_delay;
331 struct ib_odp_caps odp_caps;
332 uint64_t timestamp_mask;
333 uint64_t hca_core_clock; /* in KHZ */
334 struct ib_rss_caps rss_caps;
336 u32 raw_packet_caps; /* Use ib_raw_packet_caps enum */
347 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
350 case IB_MTU_256: return 256;
351 case IB_MTU_512: return 512;
352 case IB_MTU_1024: return 1024;
353 case IB_MTU_2048: return 2048;
354 case IB_MTU_4096: return 4096;
359 static inline enum ib_mtu ib_mtu_int_to_enum(int mtu)
363 else if (mtu >= 2048)
365 else if (mtu >= 1024)
379 IB_PORT_ACTIVE_DEFER = 5
382 enum ib_port_cap_flags {
384 IB_PORT_NOTICE_SUP = 1 << 2,
385 IB_PORT_TRAP_SUP = 1 << 3,
386 IB_PORT_OPT_IPD_SUP = 1 << 4,
387 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
388 IB_PORT_SL_MAP_SUP = 1 << 6,
389 IB_PORT_MKEY_NVRAM = 1 << 7,
390 IB_PORT_PKEY_NVRAM = 1 << 8,
391 IB_PORT_LED_INFO_SUP = 1 << 9,
392 IB_PORT_SM_DISABLED = 1 << 10,
393 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
394 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
395 IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14,
396 IB_PORT_CM_SUP = 1 << 16,
397 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
398 IB_PORT_REINIT_SUP = 1 << 18,
399 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
400 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
401 IB_PORT_DR_NOTICE_SUP = 1 << 21,
402 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
403 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
404 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
405 IB_PORT_CLIENT_REG_SUP = 1 << 25,
406 IB_PORT_IP_BASED_GIDS = 1 << 26,
416 static inline int ib_width_enum_to_int(enum ib_port_width width)
419 case IB_WIDTH_1X: return 1;
420 case IB_WIDTH_4X: return 4;
421 case IB_WIDTH_8X: return 8;
422 case IB_WIDTH_12X: return 12;
437 * struct rdma_hw_stats
438 * @timestamp - Used by the core code to track when the last update was
439 * @lifespan - Used by the core code to determine how old the counters
440 * should be before being updated again. Stored in jiffies, defaults
441 * to 10 milliseconds, drivers can override the default be specifying
442 * their own value during their allocation routine.
443 * @name - Array of pointers to static names used for the counters in
445 * @num_counters - How many hardware counters there are. If name is
446 * shorter than this number, a kernel oops will result. Driver authors
447 * are encouraged to leave BUILD_BUG_ON(ARRAY_SIZE(@name) < num_counters)
448 * in their code to prevent this.
449 * @value - Array of u64 counters that are accessed by the sysfs code and
450 * filled in by the drivers get_stats routine
452 struct rdma_hw_stats {
453 unsigned long timestamp;
454 unsigned long lifespan;
455 const char * const *names;
460 #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10
462 * rdma_alloc_hw_stats_struct - Helper function to allocate dynamic struct
464 * @names - Array of static const char *
465 * @num_counters - How many elements in array
466 * @lifespan - How many milliseconds between updates
468 static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct(
469 const char * const *names, int num_counters,
470 unsigned long lifespan)
472 struct rdma_hw_stats *stats;
474 stats = kzalloc(sizeof(*stats) + num_counters * sizeof(u64),
478 stats->names = names;
479 stats->num_counters = num_counters;
480 stats->lifespan = msecs_to_jiffies(lifespan);
486 /* Define bits for the various functionality this port needs to be supported by
489 /* Management 0x00000FFF */
490 #define RDMA_CORE_CAP_IB_MAD 0x00000001
491 #define RDMA_CORE_CAP_IB_SMI 0x00000002
492 #define RDMA_CORE_CAP_IB_CM 0x00000004
493 #define RDMA_CORE_CAP_IW_CM 0x00000008
494 #define RDMA_CORE_CAP_IB_SA 0x00000010
495 #define RDMA_CORE_CAP_OPA_MAD 0x00000020
497 /* Address format 0x000FF000 */
498 #define RDMA_CORE_CAP_AF_IB 0x00001000
499 #define RDMA_CORE_CAP_ETH_AH 0x00002000
501 /* Protocol 0xFFF00000 */
502 #define RDMA_CORE_CAP_PROT_IB 0x00100000
503 #define RDMA_CORE_CAP_PROT_ROCE 0x00200000
504 #define RDMA_CORE_CAP_PROT_IWARP 0x00400000
505 #define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000
506 #define RDMA_CORE_CAP_PROT_RAW_PACKET 0x01000000
507 #define RDMA_CORE_CAP_PROT_USNIC 0x02000000
509 #define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \
510 | RDMA_CORE_CAP_IB_MAD \
511 | RDMA_CORE_CAP_IB_SMI \
512 | RDMA_CORE_CAP_IB_CM \
513 | RDMA_CORE_CAP_IB_SA \
514 | RDMA_CORE_CAP_AF_IB)
515 #define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \
516 | RDMA_CORE_CAP_IB_MAD \
517 | RDMA_CORE_CAP_IB_CM \
518 | RDMA_CORE_CAP_AF_IB \
519 | RDMA_CORE_CAP_ETH_AH)
520 #define RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP \
521 (RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP \
522 | RDMA_CORE_CAP_IB_MAD \
523 | RDMA_CORE_CAP_IB_CM \
524 | RDMA_CORE_CAP_AF_IB \
525 | RDMA_CORE_CAP_ETH_AH)
526 #define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \
527 | RDMA_CORE_CAP_IW_CM)
528 #define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \
529 | RDMA_CORE_CAP_OPA_MAD)
531 #define RDMA_CORE_PORT_RAW_PACKET (RDMA_CORE_CAP_PROT_RAW_PACKET)
533 #define RDMA_CORE_PORT_USNIC (RDMA_CORE_CAP_PROT_USNIC)
535 struct ib_port_attr {
537 enum ib_port_state state;
539 enum ib_mtu active_mtu;
559 enum ib_device_modify_flags {
560 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
561 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
564 #define IB_DEVICE_NODE_DESC_MAX 64
566 struct ib_device_modify {
568 char node_desc[IB_DEVICE_NODE_DESC_MAX];
571 enum ib_port_modify_flags {
572 IB_PORT_SHUTDOWN = 1,
573 IB_PORT_INIT_TYPE = (1<<2),
574 IB_PORT_RESET_QKEY_CNTR = (1<<3)
577 struct ib_port_modify {
578 u32 set_port_cap_mask;
579 u32 clr_port_cap_mask;
587 IB_EVENT_QP_ACCESS_ERR,
591 IB_EVENT_PATH_MIG_ERR,
592 IB_EVENT_DEVICE_FATAL,
593 IB_EVENT_PORT_ACTIVE,
596 IB_EVENT_PKEY_CHANGE,
599 IB_EVENT_SRQ_LIMIT_REACHED,
600 IB_EVENT_QP_LAST_WQE_REACHED,
601 IB_EVENT_CLIENT_REREGISTER,
606 const char *__attribute_const__ ib_event_msg(enum ib_event_type event);
609 struct ib_device *device;
617 enum ib_event_type event;
620 struct ib_event_handler {
621 struct ib_device *device;
622 void (*handler)(struct ib_event_handler *, struct ib_event *);
623 struct list_head list;
626 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
628 (_ptr)->device = _device; \
629 (_ptr)->handler = _handler; \
630 INIT_LIST_HEAD(&(_ptr)->list); \
633 struct ib_global_route {
642 __be32 version_tclass_flow;
650 union rdma_network_hdr {
653 /* The IB spec states that if it's IPv4, the header
654 * is located in the last 20 bytes of the header.
657 struct iphdr roce4grh;
662 IB_MULTICAST_QPN = 0xffffff
665 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
666 #define IB_MULTICAST_LID_BASE cpu_to_be16(0xC000)
673 IB_RATE_PORT_CURRENT = 0,
674 IB_RATE_2_5_GBPS = 2,
682 IB_RATE_120_GBPS = 10,
683 IB_RATE_14_GBPS = 11,
684 IB_RATE_56_GBPS = 12,
685 IB_RATE_112_GBPS = 13,
686 IB_RATE_168_GBPS = 14,
687 IB_RATE_25_GBPS = 15,
688 IB_RATE_100_GBPS = 16,
689 IB_RATE_200_GBPS = 17,
690 IB_RATE_300_GBPS = 18
694 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
695 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
696 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
697 * @rate: rate to convert.
699 __attribute_const__ int ib_rate_to_mult(enum ib_rate rate);
702 * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
703 * For example, IB_RATE_2_5_GBPS will be converted to 2500.
704 * @rate: rate to convert.
706 __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate);
710 * enum ib_mr_type - memory region type
711 * @IB_MR_TYPE_MEM_REG: memory region that is used for
712 * normal registration
713 * @IB_MR_TYPE_SIGNATURE: memory region that is used for
714 * signature operations (data-integrity
716 * @IB_MR_TYPE_SG_GAPS: memory region that is capable to
717 * register any arbitrary sg lists (without
718 * the normal mr constraints - see
723 IB_MR_TYPE_SIGNATURE,
729 * IB_SIG_TYPE_NONE: Unprotected.
730 * IB_SIG_TYPE_T10_DIF: Type T10-DIF
732 enum ib_signature_type {
738 * Signature T10-DIF block-guard types
739 * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules.
740 * IB_T10DIF_CSUM: Corresponds to IP checksum rules.
742 enum ib_t10_dif_bg_type {
748 * struct ib_t10_dif_domain - Parameters specific for T10-DIF
750 * @bg_type: T10-DIF block guard type (CRC|CSUM)
751 * @pi_interval: protection information interval.
752 * @bg: seed of guard computation.
753 * @app_tag: application tag of guard block
754 * @ref_tag: initial guard block reference tag.
755 * @ref_remap: Indicate wethear the reftag increments each block
756 * @app_escape: Indicate to skip block check if apptag=0xffff
757 * @ref_escape: Indicate to skip block check if reftag=0xffffffff
758 * @apptag_check_mask: check bitmask of application tag.
760 struct ib_t10_dif_domain {
761 enum ib_t10_dif_bg_type bg_type;
769 u16 apptag_check_mask;
773 * struct ib_sig_domain - Parameters for signature domain
774 * @sig_type: specific signauture type
775 * @sig: union of all signature domain attributes that may
776 * be used to set domain layout.
778 struct ib_sig_domain {
779 enum ib_signature_type sig_type;
781 struct ib_t10_dif_domain dif;
786 * struct ib_sig_attrs - Parameters for signature handover operation
787 * @check_mask: bitmask for signature byte check (8 bytes)
788 * @mem: memory domain layout desciptor.
789 * @wire: wire domain layout desciptor.
791 struct ib_sig_attrs {
793 struct ib_sig_domain mem;
794 struct ib_sig_domain wire;
797 enum ib_sig_err_type {
804 * struct ib_sig_err - signature error descriptor
807 enum ib_sig_err_type err_type;
814 enum ib_mr_status_check {
815 IB_MR_CHECK_SIG_STATUS = 1,
819 * struct ib_mr_status - Memory region status container
821 * @fail_status: Bitmask of MR checks status. For each
822 * failed check a corresponding status bit is set.
823 * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS
826 struct ib_mr_status {
828 struct ib_sig_err sig_err;
832 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
834 * @mult: multiple to convert.
836 __attribute_const__ enum ib_rate mult_to_ib_rate(int mult);
839 struct ib_global_route grh;
853 IB_WC_LOC_EEC_OP_ERR,
858 IB_WC_LOC_ACCESS_ERR,
859 IB_WC_REM_INV_REQ_ERR,
860 IB_WC_REM_ACCESS_ERR,
863 IB_WC_RNR_RETRY_EXC_ERR,
864 IB_WC_LOC_RDD_VIOL_ERR,
865 IB_WC_REM_INV_RD_REQ_ERR,
868 IB_WC_INV_EEC_STATE_ERR,
870 IB_WC_RESP_TIMEOUT_ERR,
874 const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status);
885 IB_WC_MASKED_COMP_SWAP,
886 IB_WC_MASKED_FETCH_ADD,
888 * Set value of IB_WC_RECV so consumers can test if a completion is a
889 * receive by testing (opcode & IB_WC_RECV).
892 IB_WC_RECV_RDMA_WITH_IMM
897 IB_WC_WITH_IMM = (1<<1),
898 IB_WC_WITH_INVALIDATE = (1<<2),
899 IB_WC_IP_CSUM_OK = (1<<3),
900 IB_WC_WITH_SMAC = (1<<4),
901 IB_WC_WITH_VLAN = (1<<5),
902 IB_WC_WITH_NETWORK_HDR_TYPE = (1<<6),
908 struct ib_cqe *wr_cqe;
910 enum ib_wc_status status;
911 enum ib_wc_opcode opcode;
925 u8 port_num; /* valid only for DR SMPs on switches */
931 enum ib_cq_notify_flags {
932 IB_CQ_SOLICITED = 1 << 0,
933 IB_CQ_NEXT_COMP = 1 << 1,
934 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
935 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
943 enum ib_srq_attr_mask {
944 IB_SRQ_MAX_WR = 1 << 0,
945 IB_SRQ_LIMIT = 1 << 1,
954 struct ib_srq_init_attr {
955 void (*event_handler)(struct ib_event *, void *);
957 struct ib_srq_attr attr;
958 enum ib_srq_type srq_type;
962 struct ib_xrcd *xrcd;
976 * Maximum number of rdma_rw_ctx structures in flight at a time.
977 * ib_create_qp() will calculate the right amount of neededed WRs
978 * and MRs based on this.
990 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
991 * here (and in that order) since the MAD layer uses them as
992 * indices into a 2-entry table.
1001 IB_QPT_RAW_ETHERTYPE,
1002 IB_QPT_RAW_PACKET = 8,
1006 /* Reserve a range for qp types internal to the low level driver.
1007 * These qp types will not be visible at the IB core layer, so the
1008 * IB_QPT_MAX usages should not be affected in the core layer
1010 IB_QPT_RESERVED1 = 0x1000,
1022 enum ib_qp_create_flags {
1023 IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0,
1024 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
1025 IB_QP_CREATE_CROSS_CHANNEL = 1 << 2,
1026 IB_QP_CREATE_MANAGED_SEND = 1 << 3,
1027 IB_QP_CREATE_MANAGED_RECV = 1 << 4,
1028 IB_QP_CREATE_NETIF_QP = 1 << 5,
1029 IB_QP_CREATE_SIGNATURE_EN = 1 << 6,
1030 IB_QP_CREATE_USE_GFP_NOIO = 1 << 7,
1031 IB_QP_CREATE_SCATTER_FCS = 1 << 8,
1032 IB_QP_CREATE_CVLAN_STRIPPING = 1 << 9,
1033 /* reserve bits 26-31 for low level drivers' internal use */
1034 IB_QP_CREATE_RESERVED_START = 1 << 26,
1035 IB_QP_CREATE_RESERVED_END = 1 << 31,
1039 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
1040 * callback to destroy the passed in QP.
1043 struct ib_qp_init_attr {
1044 void (*event_handler)(struct ib_event *, void *);
1046 struct ib_cq *send_cq;
1047 struct ib_cq *recv_cq;
1049 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1050 struct ib_qp_cap cap;
1051 enum ib_sig_type sq_sig_type;
1052 enum ib_qp_type qp_type;
1053 enum ib_qp_create_flags create_flags;
1056 * Only needed for special QP types, or when using the RW API.
1059 struct ib_rwq_ind_table *rwq_ind_tbl;
1062 struct ib_qp_open_attr {
1063 void (*event_handler)(struct ib_event *, void *);
1066 enum ib_qp_type qp_type;
1069 enum ib_rnr_timeout {
1070 IB_RNR_TIMER_655_36 = 0,
1071 IB_RNR_TIMER_000_01 = 1,
1072 IB_RNR_TIMER_000_02 = 2,
1073 IB_RNR_TIMER_000_03 = 3,
1074 IB_RNR_TIMER_000_04 = 4,
1075 IB_RNR_TIMER_000_06 = 5,
1076 IB_RNR_TIMER_000_08 = 6,
1077 IB_RNR_TIMER_000_12 = 7,
1078 IB_RNR_TIMER_000_16 = 8,
1079 IB_RNR_TIMER_000_24 = 9,
1080 IB_RNR_TIMER_000_32 = 10,
1081 IB_RNR_TIMER_000_48 = 11,
1082 IB_RNR_TIMER_000_64 = 12,
1083 IB_RNR_TIMER_000_96 = 13,
1084 IB_RNR_TIMER_001_28 = 14,
1085 IB_RNR_TIMER_001_92 = 15,
1086 IB_RNR_TIMER_002_56 = 16,
1087 IB_RNR_TIMER_003_84 = 17,
1088 IB_RNR_TIMER_005_12 = 18,
1089 IB_RNR_TIMER_007_68 = 19,
1090 IB_RNR_TIMER_010_24 = 20,
1091 IB_RNR_TIMER_015_36 = 21,
1092 IB_RNR_TIMER_020_48 = 22,
1093 IB_RNR_TIMER_030_72 = 23,
1094 IB_RNR_TIMER_040_96 = 24,
1095 IB_RNR_TIMER_061_44 = 25,
1096 IB_RNR_TIMER_081_92 = 26,
1097 IB_RNR_TIMER_122_88 = 27,
1098 IB_RNR_TIMER_163_84 = 28,
1099 IB_RNR_TIMER_245_76 = 29,
1100 IB_RNR_TIMER_327_68 = 30,
1101 IB_RNR_TIMER_491_52 = 31
1104 enum ib_qp_attr_mask {
1106 IB_QP_CUR_STATE = (1<<1),
1107 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
1108 IB_QP_ACCESS_FLAGS = (1<<3),
1109 IB_QP_PKEY_INDEX = (1<<4),
1110 IB_QP_PORT = (1<<5),
1111 IB_QP_QKEY = (1<<6),
1113 IB_QP_PATH_MTU = (1<<8),
1114 IB_QP_TIMEOUT = (1<<9),
1115 IB_QP_RETRY_CNT = (1<<10),
1116 IB_QP_RNR_RETRY = (1<<11),
1117 IB_QP_RQ_PSN = (1<<12),
1118 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
1119 IB_QP_ALT_PATH = (1<<14),
1120 IB_QP_MIN_RNR_TIMER = (1<<15),
1121 IB_QP_SQ_PSN = (1<<16),
1122 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
1123 IB_QP_PATH_MIG_STATE = (1<<18),
1124 IB_QP_CAP = (1<<19),
1125 IB_QP_DEST_QPN = (1<<20),
1126 IB_QP_RESERVED1 = (1<<21),
1127 IB_QP_RESERVED2 = (1<<22),
1128 IB_QP_RESERVED3 = (1<<23),
1129 IB_QP_RESERVED4 = (1<<24),
1130 IB_QP_RATE_LIMIT = (1<<25),
1155 enum ib_qp_state qp_state;
1156 enum ib_qp_state cur_qp_state;
1157 enum ib_mtu path_mtu;
1158 enum ib_mig_state path_mig_state;
1163 int qp_access_flags;
1164 struct ib_qp_cap cap;
1165 struct ib_ah_attr ah_attr;
1166 struct ib_ah_attr alt_ah_attr;
1169 u8 en_sqd_async_notify;
1172 u8 max_dest_rd_atomic;
1185 IB_WR_RDMA_WRITE_WITH_IMM,
1187 IB_WR_SEND_WITH_IMM,
1189 IB_WR_ATOMIC_CMP_AND_SWP,
1190 IB_WR_ATOMIC_FETCH_AND_ADD,
1192 IB_WR_SEND_WITH_INV,
1193 IB_WR_RDMA_READ_WITH_INV,
1196 IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
1197 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
1199 /* reserve values for low level drivers' internal use.
1200 * These values will not be used at all in the ib core layer.
1202 IB_WR_RESERVED1 = 0xf0,
1214 enum ib_send_flags {
1216 IB_SEND_SIGNALED = (1<<1),
1217 IB_SEND_SOLICITED = (1<<2),
1218 IB_SEND_INLINE = (1<<3),
1219 IB_SEND_IP_CSUM = (1<<4),
1221 /* reserve bits 26-31 for low level drivers' internal use */
1222 IB_SEND_RESERVED_START = (1 << 26),
1223 IB_SEND_RESERVED_END = (1 << 31),
1233 void (*done)(struct ib_cq *cq, struct ib_wc *wc);
1237 struct ib_send_wr *next;
1240 struct ib_cqe *wr_cqe;
1242 struct ib_sge *sg_list;
1244 enum ib_wr_opcode opcode;
1248 u32 invalidate_rkey;
1253 struct ib_send_wr wr;
1258 static inline struct ib_rdma_wr *rdma_wr(struct ib_send_wr *wr)
1260 return container_of(wr, struct ib_rdma_wr, wr);
1263 struct ib_atomic_wr {
1264 struct ib_send_wr wr;
1268 u64 compare_add_mask;
1273 static inline struct ib_atomic_wr *atomic_wr(struct ib_send_wr *wr)
1275 return container_of(wr, struct ib_atomic_wr, wr);
1279 struct ib_send_wr wr;
1286 u16 pkey_index; /* valid for GSI only */
1287 u8 port_num; /* valid for DR SMPs on switch only */
1290 static inline struct ib_ud_wr *ud_wr(struct ib_send_wr *wr)
1292 return container_of(wr, struct ib_ud_wr, wr);
1296 struct ib_send_wr wr;
1302 static inline struct ib_reg_wr *reg_wr(struct ib_send_wr *wr)
1304 return container_of(wr, struct ib_reg_wr, wr);
1307 struct ib_sig_handover_wr {
1308 struct ib_send_wr wr;
1309 struct ib_sig_attrs *sig_attrs;
1310 struct ib_mr *sig_mr;
1312 struct ib_sge *prot;
1315 static inline struct ib_sig_handover_wr *sig_handover_wr(struct ib_send_wr *wr)
1317 return container_of(wr, struct ib_sig_handover_wr, wr);
1321 struct ib_recv_wr *next;
1324 struct ib_cqe *wr_cqe;
1326 struct ib_sge *sg_list;
1330 enum ib_access_flags {
1331 IB_ACCESS_LOCAL_WRITE = 1,
1332 IB_ACCESS_REMOTE_WRITE = (1<<1),
1333 IB_ACCESS_REMOTE_READ = (1<<2),
1334 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
1335 IB_ACCESS_MW_BIND = (1<<4),
1336 IB_ZERO_BASED = (1<<5),
1337 IB_ACCESS_ON_DEMAND = (1<<6),
1341 * XXX: these are apparently used for ->rereg_user_mr, no idea why they
1342 * are hidden here instead of a uapi header!
1344 enum ib_mr_rereg_flags {
1345 IB_MR_REREG_TRANS = 1,
1346 IB_MR_REREG_PD = (1<<1),
1347 IB_MR_REREG_ACCESS = (1<<2),
1348 IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
1351 struct ib_fmr_attr {
1359 struct ib_ucontext {
1360 struct ib_device *device;
1361 struct list_head pd_list;
1362 struct list_head mr_list;
1363 struct list_head mw_list;
1364 struct list_head cq_list;
1365 struct list_head qp_list;
1366 struct list_head srq_list;
1367 struct list_head ah_list;
1368 struct list_head xrcd_list;
1369 struct list_head rule_list;
1370 struct list_head wq_list;
1371 struct list_head rwq_ind_tbl_list;
1375 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1376 struct rb_root umem_tree;
1378 * Protects .umem_rbroot and tree, as well as odp_mrs_count and
1379 * mmu notifiers registration.
1381 struct rw_semaphore umem_rwsem;
1382 void (*invalidate_range)(struct ib_umem *umem,
1383 unsigned long start, unsigned long end);
1385 struct mmu_notifier mn;
1386 atomic_t notifier_count;
1387 /* A list of umems that don't have private mmu notifier counters yet. */
1388 struct list_head no_private_counters;
1394 u64 user_handle; /* handle given to us by userspace */
1395 struct ib_ucontext *context; /* associated user context */
1396 void *object; /* containing object */
1397 struct list_head list; /* link to context's list */
1398 int id; /* index into kernel idr */
1400 struct rw_semaphore mutex; /* protects .live */
1401 struct rcu_head rcu; /* kfree_rcu() overhead */
1406 const void __user *inbuf;
1407 void __user *outbuf;
1415 struct ib_device *device;
1416 struct ib_uobject *uobject;
1417 atomic_t usecnt; /* count all resources */
1419 u32 unsafe_global_rkey;
1422 * Implementation details of the RDMA core, don't use in drivers:
1424 struct ib_mr *__internal_mr;
1428 struct ib_device *device;
1429 atomic_t usecnt; /* count all exposed resources */
1430 struct inode *inode;
1432 struct mutex tgt_qp_mutex;
1433 struct list_head tgt_qp_list;
1437 struct ib_device *device;
1439 struct ib_uobject *uobject;
1442 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
1444 enum ib_poll_context {
1445 IB_POLL_DIRECT, /* caller context, no hw completions */
1446 IB_POLL_SOFTIRQ, /* poll from softirq context */
1447 IB_POLL_WORKQUEUE, /* poll from workqueue */
1451 struct ib_device *device;
1452 struct ib_uobject *uobject;
1453 ib_comp_handler comp_handler;
1454 void (*event_handler)(struct ib_event *, void *);
1457 atomic_t usecnt; /* count number of work queues */
1458 enum ib_poll_context poll_ctx;
1461 struct irq_poll iop;
1462 struct work_struct work;
1467 struct ib_device *device;
1469 struct ib_uobject *uobject;
1470 void (*event_handler)(struct ib_event *, void *);
1472 enum ib_srq_type srq_type;
1477 struct ib_xrcd *xrcd;
1484 enum ib_raw_packet_caps {
1485 /* Strip cvlan from incoming packet and report it in the matching work
1486 * completion is supported.
1488 IB_RAW_PACKET_CAP_CVLAN_STRIPPING = (1 << 0),
1489 /* Scatter FCS field of an incoming packet to host memory is supported.
1491 IB_RAW_PACKET_CAP_SCATTER_FCS = (1 << 1),
1492 /* Checksum offloads are supported (for both send and receive). */
1493 IB_RAW_PACKET_CAP_IP_CSUM = (1 << 2),
1507 struct ib_device *device;
1508 struct ib_uobject *uobject;
1510 void (*event_handler)(struct ib_event *, void *);
1514 enum ib_wq_state state;
1515 enum ib_wq_type wq_type;
1520 IB_WQ_FLAGS_CVLAN_STRIPPING = 1 << 0,
1521 IB_WQ_FLAGS_SCATTER_FCS = 1 << 1,
1524 struct ib_wq_init_attr {
1526 enum ib_wq_type wq_type;
1530 void (*event_handler)(struct ib_event *, void *);
1531 u32 create_flags; /* Use enum ib_wq_flags */
1534 enum ib_wq_attr_mask {
1535 IB_WQ_STATE = 1 << 0,
1536 IB_WQ_CUR_STATE = 1 << 1,
1537 IB_WQ_FLAGS = 1 << 2,
1541 enum ib_wq_state wq_state;
1542 enum ib_wq_state curr_wq_state;
1543 u32 flags; /* Use enum ib_wq_flags */
1544 u32 flags_mask; /* Use enum ib_wq_flags */
1547 struct ib_rwq_ind_table {
1548 struct ib_device *device;
1549 struct ib_uobject *uobject;
1552 u32 log_ind_tbl_size;
1553 struct ib_wq **ind_tbl;
1556 struct ib_rwq_ind_table_init_attr {
1557 u32 log_ind_tbl_size;
1558 /* Each entry is a pointer to Receive Work Queue */
1559 struct ib_wq **ind_tbl;
1563 * @max_write_sge: Maximum SGE elements per RDMA WRITE request.
1564 * @max_read_sge: Maximum SGE elements per RDMA READ request.
1567 struct ib_device *device;
1569 struct ib_cq *send_cq;
1570 struct ib_cq *recv_cq;
1573 struct list_head rdma_mrs;
1574 struct list_head sig_mrs;
1576 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1577 struct list_head xrcd_list;
1579 /* count times opened, mcast attaches, flow attaches */
1581 struct list_head open_list;
1582 struct ib_qp *real_qp;
1583 struct ib_uobject *uobject;
1584 void (*event_handler)(struct ib_event *, void *);
1589 enum ib_qp_type qp_type;
1590 struct ib_rwq_ind_table *rwq_ind_tbl;
1594 struct ib_device *device;
1600 unsigned int page_size;
1603 struct ib_uobject *uobject; /* user */
1604 struct list_head qp_entry; /* FR */
1609 struct ib_device *device;
1611 struct ib_uobject *uobject;
1613 enum ib_mw_type type;
1617 struct ib_device *device;
1619 struct list_head list;
1624 /* Supported steering options */
1625 enum ib_flow_attr_type {
1626 /* steering according to rule specifications */
1627 IB_FLOW_ATTR_NORMAL = 0x0,
1628 /* default unicast and multicast rule -
1629 * receive all Eth traffic which isn't steered to any QP
1631 IB_FLOW_ATTR_ALL_DEFAULT = 0x1,
1632 /* default multicast rule -
1633 * receive all Eth multicast traffic which isn't steered to any QP
1635 IB_FLOW_ATTR_MC_DEFAULT = 0x2,
1636 /* sniffer rule - receive all port traffic */
1637 IB_FLOW_ATTR_SNIFFER = 0x3
1640 /* Supported steering header types */
1641 enum ib_flow_spec_type {
1643 IB_FLOW_SPEC_ETH = 0x20,
1644 IB_FLOW_SPEC_IB = 0x22,
1646 IB_FLOW_SPEC_IPV4 = 0x30,
1647 IB_FLOW_SPEC_IPV6 = 0x31,
1649 IB_FLOW_SPEC_TCP = 0x40,
1650 IB_FLOW_SPEC_UDP = 0x41,
1651 IB_FLOW_SPEC_VXLAN_TUNNEL = 0x50,
1652 IB_FLOW_SPEC_INNER = 0x100,
1654 IB_FLOW_SPEC_ACTION_TAG = 0x1000,
1656 #define IB_FLOW_SPEC_LAYER_MASK 0xF0
1657 #define IB_FLOW_SPEC_SUPPORT_LAYERS 8
1659 /* Flow steering rule priority is set according to it's domain.
1660 * Lower domain value means higher priority.
1662 enum ib_flow_domain {
1663 IB_FLOW_DOMAIN_USER,
1664 IB_FLOW_DOMAIN_ETHTOOL,
1667 IB_FLOW_DOMAIN_NUM /* Must be last */
1670 enum ib_flow_flags {
1671 IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */
1672 IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 2 /* Must be last */
1675 struct ib_flow_eth_filter {
1684 struct ib_flow_spec_eth {
1687 struct ib_flow_eth_filter val;
1688 struct ib_flow_eth_filter mask;
1691 struct ib_flow_ib_filter {
1698 struct ib_flow_spec_ib {
1701 struct ib_flow_ib_filter val;
1702 struct ib_flow_ib_filter mask;
1705 /* IPv4 header flags */
1706 enum ib_ipv4_flags {
1707 IB_IPV4_DONT_FRAG = 0x2, /* Don't enable packet fragmentation */
1708 IB_IPV4_MORE_FRAG = 0X4 /* For All fragmented packets except the
1709 last have this flag set */
1712 struct ib_flow_ipv4_filter {
1723 struct ib_flow_spec_ipv4 {
1726 struct ib_flow_ipv4_filter val;
1727 struct ib_flow_ipv4_filter mask;
1730 struct ib_flow_ipv6_filter {
1741 struct ib_flow_spec_ipv6 {
1744 struct ib_flow_ipv6_filter val;
1745 struct ib_flow_ipv6_filter mask;
1748 struct ib_flow_tcp_udp_filter {
1755 struct ib_flow_spec_tcp_udp {
1758 struct ib_flow_tcp_udp_filter val;
1759 struct ib_flow_tcp_udp_filter mask;
1762 struct ib_flow_tunnel_filter {
1767 /* ib_flow_spec_tunnel describes the Vxlan tunnel
1768 * the tunnel_id from val has the vni value
1770 struct ib_flow_spec_tunnel {
1773 struct ib_flow_tunnel_filter val;
1774 struct ib_flow_tunnel_filter mask;
1777 struct ib_flow_spec_action_tag {
1778 enum ib_flow_spec_type type;
1783 union ib_flow_spec {
1788 struct ib_flow_spec_eth eth;
1789 struct ib_flow_spec_ib ib;
1790 struct ib_flow_spec_ipv4 ipv4;
1791 struct ib_flow_spec_tcp_udp tcp_udp;
1792 struct ib_flow_spec_ipv6 ipv6;
1793 struct ib_flow_spec_tunnel tunnel;
1794 struct ib_flow_spec_action_tag flow_tag;
1797 struct ib_flow_attr {
1798 enum ib_flow_attr_type type;
1804 /* Following are the optional layers according to user request
1805 * struct ib_flow_spec_xxx
1806 * struct ib_flow_spec_yyy
1812 struct ib_uobject *uobject;
1818 enum ib_process_mad_flags {
1819 IB_MAD_IGNORE_MKEY = 1,
1820 IB_MAD_IGNORE_BKEY = 2,
1821 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
1824 enum ib_mad_result {
1825 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
1826 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
1827 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
1828 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
1831 #define IB_DEVICE_NAME_MAX 64
1833 struct ib_port_cache {
1834 struct ib_pkey_cache *pkey;
1835 struct ib_gid_table *gid;
1837 enum ib_port_state port_state;
1842 struct ib_event_handler event_handler;
1843 struct ib_port_cache *ports;
1846 struct ib_dma_mapping_ops {
1847 int (*mapping_error)(struct ib_device *dev,
1849 u64 (*map_single)(struct ib_device *dev,
1850 void *ptr, size_t size,
1851 enum dma_data_direction direction);
1852 void (*unmap_single)(struct ib_device *dev,
1853 u64 addr, size_t size,
1854 enum dma_data_direction direction);
1855 u64 (*map_page)(struct ib_device *dev,
1856 struct page *page, unsigned long offset,
1858 enum dma_data_direction direction);
1859 void (*unmap_page)(struct ib_device *dev,
1860 u64 addr, size_t size,
1861 enum dma_data_direction direction);
1862 int (*map_sg)(struct ib_device *dev,
1863 struct scatterlist *sg, int nents,
1864 enum dma_data_direction direction);
1865 void (*unmap_sg)(struct ib_device *dev,
1866 struct scatterlist *sg, int nents,
1867 enum dma_data_direction direction);
1868 int (*map_sg_attrs)(struct ib_device *dev,
1869 struct scatterlist *sg, int nents,
1870 enum dma_data_direction direction,
1871 unsigned long attrs);
1872 void (*unmap_sg_attrs)(struct ib_device *dev,
1873 struct scatterlist *sg, int nents,
1874 enum dma_data_direction direction,
1875 unsigned long attrs);
1876 void (*sync_single_for_cpu)(struct ib_device *dev,
1879 enum dma_data_direction dir);
1880 void (*sync_single_for_device)(struct ib_device *dev,
1883 enum dma_data_direction dir);
1884 void *(*alloc_coherent)(struct ib_device *dev,
1888 void (*free_coherent)(struct ib_device *dev,
1889 size_t size, void *cpu_addr,
1895 struct ib_port_immutable {
1903 struct device *dma_device;
1905 char name[IB_DEVICE_NAME_MAX];
1907 struct list_head event_handler_list;
1908 spinlock_t event_handler_lock;
1910 spinlock_t client_data_lock;
1911 struct list_head core_list;
1912 /* Access to the client_data_list is protected by the client_data_lock
1913 * spinlock and the lists_rwsem read-write semaphore */
1914 struct list_head client_data_list;
1916 struct ib_cache cache;
1918 * port_immutable is indexed by port number
1920 struct ib_port_immutable *port_immutable;
1922 int num_comp_vectors;
1924 struct iw_cm_verbs *iwcm;
1927 * alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the
1928 * driver initialized data. The struct is kfree()'ed by the sysfs
1929 * core when the device is removed. A lifespan of -1 in the return
1930 * struct tells the core to set a default lifespan.
1932 struct rdma_hw_stats *(*alloc_hw_stats)(struct ib_device *device,
1935 * get_hw_stats - Fill in the counter value(s) in the stats struct.
1936 * @index - The index in the value array we wish to have updated, or
1937 * num_counters if we want all stats updated
1939 * < 0 - Error, no counters updated
1940 * index - Updated the single counter pointed to by index
1941 * num_counters - Updated all counters (will reset the timestamp
1942 * and prevent further calls for lifespan milliseconds)
1943 * Drivers are allowed to update all counters in leiu of just the
1944 * one given in index at their option
1946 int (*get_hw_stats)(struct ib_device *device,
1947 struct rdma_hw_stats *stats,
1948 u8 port, int index);
1949 int (*query_device)(struct ib_device *device,
1950 struct ib_device_attr *device_attr,
1951 struct ib_udata *udata);
1952 int (*query_port)(struct ib_device *device,
1954 struct ib_port_attr *port_attr);
1955 enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
1957 /* When calling get_netdev, the HW vendor's driver should return the
1958 * net device of device @device at port @port_num or NULL if such
1959 * a net device doesn't exist. The vendor driver should call dev_hold
1960 * on this net device. The HW vendor's device driver must guarantee
1961 * that this function returns NULL before the net device reaches
1962 * NETDEV_UNREGISTER_FINAL state.
1964 struct net_device *(*get_netdev)(struct ib_device *device,
1966 int (*query_gid)(struct ib_device *device,
1967 u8 port_num, int index,
1969 /* When calling add_gid, the HW vendor's driver should
1970 * add the gid of device @device at gid index @index of
1971 * port @port_num to be @gid. Meta-info of that gid (for example,
1972 * the network device related to this gid is available
1973 * at @attr. @context allows the HW vendor driver to store extra
1974 * information together with a GID entry. The HW vendor may allocate
1975 * memory to contain this information and store it in @context when a
1976 * new GID entry is written to. Params are consistent until the next
1977 * call of add_gid or delete_gid. The function should return 0 on
1978 * success or error otherwise. The function could be called
1979 * concurrently for different ports. This function is only called
1980 * when roce_gid_table is used.
1982 int (*add_gid)(struct ib_device *device,
1985 const union ib_gid *gid,
1986 const struct ib_gid_attr *attr,
1988 /* When calling del_gid, the HW vendor's driver should delete the
1989 * gid of device @device at gid index @index of port @port_num.
1990 * Upon the deletion of a GID entry, the HW vendor must free any
1991 * allocated memory. The caller will clear @context afterwards.
1992 * This function is only called when roce_gid_table is used.
1994 int (*del_gid)(struct ib_device *device,
1998 int (*query_pkey)(struct ib_device *device,
1999 u8 port_num, u16 index, u16 *pkey);
2000 int (*modify_device)(struct ib_device *device,
2001 int device_modify_mask,
2002 struct ib_device_modify *device_modify);
2003 int (*modify_port)(struct ib_device *device,
2004 u8 port_num, int port_modify_mask,
2005 struct ib_port_modify *port_modify);
2006 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
2007 struct ib_udata *udata);
2008 int (*dealloc_ucontext)(struct ib_ucontext *context);
2009 int (*mmap)(struct ib_ucontext *context,
2010 struct vm_area_struct *vma);
2011 struct ib_pd * (*alloc_pd)(struct ib_device *device,
2012 struct ib_ucontext *context,
2013 struct ib_udata *udata);
2014 int (*dealloc_pd)(struct ib_pd *pd);
2015 struct ib_ah * (*create_ah)(struct ib_pd *pd,
2016 struct ib_ah_attr *ah_attr,
2017 struct ib_udata *udata);
2018 int (*modify_ah)(struct ib_ah *ah,
2019 struct ib_ah_attr *ah_attr);
2020 int (*query_ah)(struct ib_ah *ah,
2021 struct ib_ah_attr *ah_attr);
2022 int (*destroy_ah)(struct ib_ah *ah);
2023 struct ib_srq * (*create_srq)(struct ib_pd *pd,
2024 struct ib_srq_init_attr *srq_init_attr,
2025 struct ib_udata *udata);
2026 int (*modify_srq)(struct ib_srq *srq,
2027 struct ib_srq_attr *srq_attr,
2028 enum ib_srq_attr_mask srq_attr_mask,
2029 struct ib_udata *udata);
2030 int (*query_srq)(struct ib_srq *srq,
2031 struct ib_srq_attr *srq_attr);
2032 int (*destroy_srq)(struct ib_srq *srq);
2033 int (*post_srq_recv)(struct ib_srq *srq,
2034 struct ib_recv_wr *recv_wr,
2035 struct ib_recv_wr **bad_recv_wr);
2036 struct ib_qp * (*create_qp)(struct ib_pd *pd,
2037 struct ib_qp_init_attr *qp_init_attr,
2038 struct ib_udata *udata);
2039 int (*modify_qp)(struct ib_qp *qp,
2040 struct ib_qp_attr *qp_attr,
2042 struct ib_udata *udata);
2043 int (*query_qp)(struct ib_qp *qp,
2044 struct ib_qp_attr *qp_attr,
2046 struct ib_qp_init_attr *qp_init_attr);
2047 int (*destroy_qp)(struct ib_qp *qp);
2048 int (*post_send)(struct ib_qp *qp,
2049 struct ib_send_wr *send_wr,
2050 struct ib_send_wr **bad_send_wr);
2051 int (*post_recv)(struct ib_qp *qp,
2052 struct ib_recv_wr *recv_wr,
2053 struct ib_recv_wr **bad_recv_wr);
2054 struct ib_cq * (*create_cq)(struct ib_device *device,
2055 const struct ib_cq_init_attr *attr,
2056 struct ib_ucontext *context,
2057 struct ib_udata *udata);
2058 int (*modify_cq)(struct ib_cq *cq, u16 cq_count,
2060 int (*destroy_cq)(struct ib_cq *cq);
2061 int (*resize_cq)(struct ib_cq *cq, int cqe,
2062 struct ib_udata *udata);
2063 int (*poll_cq)(struct ib_cq *cq, int num_entries,
2065 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
2066 int (*req_notify_cq)(struct ib_cq *cq,
2067 enum ib_cq_notify_flags flags);
2068 int (*req_ncomp_notif)(struct ib_cq *cq,
2070 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
2071 int mr_access_flags);
2072 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
2073 u64 start, u64 length,
2075 int mr_access_flags,
2076 struct ib_udata *udata);
2077 int (*rereg_user_mr)(struct ib_mr *mr,
2079 u64 start, u64 length,
2081 int mr_access_flags,
2083 struct ib_udata *udata);
2084 int (*dereg_mr)(struct ib_mr *mr);
2085 struct ib_mr * (*alloc_mr)(struct ib_pd *pd,
2086 enum ib_mr_type mr_type,
2088 int (*map_mr_sg)(struct ib_mr *mr,
2089 struct scatterlist *sg,
2091 unsigned int *sg_offset);
2092 struct ib_mw * (*alloc_mw)(struct ib_pd *pd,
2093 enum ib_mw_type type,
2094 struct ib_udata *udata);
2095 int (*dealloc_mw)(struct ib_mw *mw);
2096 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
2097 int mr_access_flags,
2098 struct ib_fmr_attr *fmr_attr);
2099 int (*map_phys_fmr)(struct ib_fmr *fmr,
2100 u64 *page_list, int list_len,
2102 int (*unmap_fmr)(struct list_head *fmr_list);
2103 int (*dealloc_fmr)(struct ib_fmr *fmr);
2104 int (*attach_mcast)(struct ib_qp *qp,
2107 int (*detach_mcast)(struct ib_qp *qp,
2110 int (*process_mad)(struct ib_device *device,
2111 int process_mad_flags,
2113 const struct ib_wc *in_wc,
2114 const struct ib_grh *in_grh,
2115 const struct ib_mad_hdr *in_mad,
2117 struct ib_mad_hdr *out_mad,
2118 size_t *out_mad_size,
2119 u16 *out_mad_pkey_index);
2120 struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device,
2121 struct ib_ucontext *ucontext,
2122 struct ib_udata *udata);
2123 int (*dealloc_xrcd)(struct ib_xrcd *xrcd);
2124 struct ib_flow * (*create_flow)(struct ib_qp *qp,
2128 int (*destroy_flow)(struct ib_flow *flow_id);
2129 int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
2130 struct ib_mr_status *mr_status);
2131 void (*disassociate_ucontext)(struct ib_ucontext *ibcontext);
2132 void (*drain_rq)(struct ib_qp *qp);
2133 void (*drain_sq)(struct ib_qp *qp);
2134 int (*set_vf_link_state)(struct ib_device *device, int vf, u8 port,
2136 int (*get_vf_config)(struct ib_device *device, int vf, u8 port,
2137 struct ifla_vf_info *ivf);
2138 int (*get_vf_stats)(struct ib_device *device, int vf, u8 port,
2139 struct ifla_vf_stats *stats);
2140 int (*set_vf_guid)(struct ib_device *device, int vf, u8 port, u64 guid,
2142 struct ib_wq * (*create_wq)(struct ib_pd *pd,
2143 struct ib_wq_init_attr *init_attr,
2144 struct ib_udata *udata);
2145 int (*destroy_wq)(struct ib_wq *wq);
2146 int (*modify_wq)(struct ib_wq *wq,
2147 struct ib_wq_attr *attr,
2149 struct ib_udata *udata);
2150 struct ib_rwq_ind_table * (*create_rwq_ind_table)(struct ib_device *device,
2151 struct ib_rwq_ind_table_init_attr *init_attr,
2152 struct ib_udata *udata);
2153 int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table);
2154 struct ib_dma_mapping_ops *dma_ops;
2156 struct module *owner;
2158 struct kobject *ports_parent;
2159 struct list_head port_list;
2162 IB_DEV_UNINITIALIZED,
2168 u64 uverbs_cmd_mask;
2169 u64 uverbs_ex_cmd_mask;
2171 char node_desc[IB_DEVICE_NODE_DESC_MAX];
2177 struct ib_device_attr attrs;
2178 struct attribute_group *hw_stats_ag;
2179 struct rdma_hw_stats *hw_stats;
2182 * The following mandatory functions are used only at device
2183 * registration. Keep functions such as these at the end of this
2184 * structure to avoid cache line misses when accessing struct ib_device
2187 int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *);
2188 void (*get_dev_fw_str)(struct ib_device *, char *str, size_t str_len);
2193 void (*add) (struct ib_device *);
2194 void (*remove)(struct ib_device *, void *client_data);
2196 /* Returns the net_dev belonging to this ib_client and matching the
2198 * @dev: An RDMA device that the net_dev use for communication.
2199 * @port: A physical port number on the RDMA device.
2200 * @pkey: P_Key that the net_dev uses if applicable.
2201 * @gid: A GID that the net_dev uses to communicate.
2202 * @addr: An IP address the net_dev is configured with.
2203 * @client_data: The device's client data set by ib_set_client_data().
2205 * An ib_client that implements a net_dev on top of RDMA devices
2206 * (such as IP over IB) should implement this callback, allowing the
2207 * rdma_cm module to find the right net_dev for a given request.
2209 * The caller is responsible for calling dev_put on the returned
2211 struct net_device *(*get_net_dev_by_params)(
2212 struct ib_device *dev,
2215 const union ib_gid *gid,
2216 const struct sockaddr *addr,
2218 struct list_head list;
2221 struct ib_device *ib_alloc_device(size_t size);
2222 void ib_dealloc_device(struct ib_device *device);
2224 void ib_get_device_fw_str(struct ib_device *device, char *str, size_t str_len);
2226 int ib_register_device(struct ib_device *device,
2227 int (*port_callback)(struct ib_device *,
2228 u8, struct kobject *));
2229 void ib_unregister_device(struct ib_device *device);
2231 int ib_register_client (struct ib_client *client);
2232 void ib_unregister_client(struct ib_client *client);
2234 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
2235 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
2238 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
2240 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
2243 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
2245 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
2248 static inline bool ib_is_udata_cleared(struct ib_udata *udata,
2252 const void __user *p = udata->inbuf + offset;
2256 if (len > USHRT_MAX)
2259 buf = memdup_user(p, len);
2263 ret = !memchr_inv(buf, 0, len);
2269 * ib_modify_qp_is_ok - Check that the supplied attribute mask
2270 * contains all required attributes and no attributes not allowed for
2271 * the given QP state transition.
2272 * @cur_state: Current QP state
2273 * @next_state: Next QP state
2275 * @mask: Mask of supplied QP attributes
2276 * @ll : link layer of port
2278 * This function is a helper function that a low-level driver's
2279 * modify_qp method can use to validate the consumer's input. It
2280 * checks that cur_state and next_state are valid QP states, that a
2281 * transition from cur_state to next_state is allowed by the IB spec,
2282 * and that the attribute mask supplied is allowed for the transition.
2284 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
2285 enum ib_qp_type type, enum ib_qp_attr_mask mask,
2286 enum rdma_link_layer ll);
2288 int ib_register_event_handler (struct ib_event_handler *event_handler);
2289 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
2290 void ib_dispatch_event(struct ib_event *event);
2292 int ib_query_port(struct ib_device *device,
2293 u8 port_num, struct ib_port_attr *port_attr);
2295 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
2299 * rdma_cap_ib_switch - Check if the device is IB switch
2300 * @device: Device to check
2302 * Device driver is responsible for setting is_switch bit on
2303 * in ib_device structure at init time.
2305 * Return: true if the device is IB switch.
2307 static inline bool rdma_cap_ib_switch(const struct ib_device *device)
2309 return device->is_switch;
2313 * rdma_start_port - Return the first valid port number for the device
2316 * @device: Device to be checked
2318 * Return start port number
2320 static inline u8 rdma_start_port(const struct ib_device *device)
2322 return rdma_cap_ib_switch(device) ? 0 : 1;
2326 * rdma_end_port - Return the last valid port number for the device
2329 * @device: Device to be checked
2331 * Return last port number
2333 static inline u8 rdma_end_port(const struct ib_device *device)
2335 return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt;
2338 static inline int rdma_is_port_valid(const struct ib_device *device,
2341 return (port >= rdma_start_port(device) &&
2342 port <= rdma_end_port(device));
2345 static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num)
2347 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB;
2350 static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num)
2352 return device->port_immutable[port_num].core_cap_flags &
2353 (RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP);
2356 static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, u8 port_num)
2358 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
2361 static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, u8 port_num)
2363 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE;
2366 static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num)
2368 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP;
2371 static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num)
2373 return rdma_protocol_ib(device, port_num) ||
2374 rdma_protocol_roce(device, port_num);
2377 static inline bool rdma_protocol_raw_packet(const struct ib_device *device, u8 port_num)
2379 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_RAW_PACKET;
2382 static inline bool rdma_protocol_usnic(const struct ib_device *device, u8 port_num)
2384 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_USNIC;
2388 * rdma_cap_ib_mad - Check if the port of a device supports Infiniband
2389 * Management Datagrams.
2390 * @device: Device to check
2391 * @port_num: Port number to check
2393 * Management Datagrams (MAD) are a required part of the InfiniBand
2394 * specification and are supported on all InfiniBand devices. A slightly
2395 * extended version are also supported on OPA interfaces.
2397 * Return: true if the port supports sending/receiving of MAD packets.
2399 static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num)
2401 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_MAD;
2405 * rdma_cap_opa_mad - Check if the port of device provides support for OPA
2406 * Management Datagrams.
2407 * @device: Device to check
2408 * @port_num: Port number to check
2410 * Intel OmniPath devices extend and/or replace the InfiniBand Management
2411 * datagrams with their own versions. These OPA MADs share many but not all of
2412 * the characteristics of InfiniBand MADs.
2414 * OPA MADs differ in the following ways:
2416 * 1) MADs are variable size up to 2K
2417 * IBTA defined MADs remain fixed at 256 bytes
2418 * 2) OPA SMPs must carry valid PKeys
2419 * 3) OPA SMP packets are a different format
2421 * Return: true if the port supports OPA MAD packet formats.
2423 static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num)
2425 return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD)
2426 == RDMA_CORE_CAP_OPA_MAD;
2430 * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband
2431 * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI).
2432 * @device: Device to check
2433 * @port_num: Port number to check
2435 * Each InfiniBand node is required to provide a Subnet Management Agent
2436 * that the subnet manager can access. Prior to the fabric being fully
2437 * configured by the subnet manager, the SMA is accessed via a well known
2438 * interface called the Subnet Management Interface (SMI). This interface
2439 * uses directed route packets to communicate with the SM to get around the
2440 * chicken and egg problem of the SM needing to know what's on the fabric
2441 * in order to configure the fabric, and needing to configure the fabric in
2442 * order to send packets to the devices on the fabric. These directed
2443 * route packets do not need the fabric fully configured in order to reach
2444 * their destination. The SMI is the only method allowed to send
2445 * directed route packets on an InfiniBand fabric.
2447 * Return: true if the port provides an SMI.
2449 static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num)
2451 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SMI;
2455 * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband
2456 * Communication Manager.
2457 * @device: Device to check
2458 * @port_num: Port number to check
2460 * The InfiniBand Communication Manager is one of many pre-defined General
2461 * Service Agents (GSA) that are accessed via the General Service
2462 * Interface (GSI). It's role is to facilitate establishment of connections
2463 * between nodes as well as other management related tasks for established
2466 * Return: true if the port supports an IB CM (this does not guarantee that
2467 * a CM is actually running however).
2469 static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num)
2471 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_CM;
2475 * rdma_cap_iw_cm - Check if the port of device has the capability IWARP
2476 * Communication Manager.
2477 * @device: Device to check
2478 * @port_num: Port number to check
2480 * Similar to above, but specific to iWARP connections which have a different
2481 * managment protocol than InfiniBand.
2483 * Return: true if the port supports an iWARP CM (this does not guarantee that
2484 * a CM is actually running however).
2486 static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num)
2488 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IW_CM;
2492 * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband
2493 * Subnet Administration.
2494 * @device: Device to check
2495 * @port_num: Port number to check
2497 * An InfiniBand Subnet Administration (SA) service is a pre-defined General
2498 * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand
2499 * fabrics, devices should resolve routes to other hosts by contacting the
2500 * SA to query the proper route.
2502 * Return: true if the port should act as a client to the fabric Subnet
2503 * Administration interface. This does not imply that the SA service is
2506 static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num)
2508 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SA;
2512 * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband
2514 * @device: Device to check
2515 * @port_num: Port number to check
2517 * InfiniBand multicast registration is more complex than normal IPv4 or
2518 * IPv6 multicast registration. Each Host Channel Adapter must register
2519 * with the Subnet Manager when it wishes to join a multicast group. It
2520 * should do so only once regardless of how many queue pairs it subscribes
2521 * to this group. And it should leave the group only after all queue pairs
2522 * attached to the group have been detached.
2524 * Return: true if the port must undertake the additional adminstrative
2525 * overhead of registering/unregistering with the SM and tracking of the
2526 * total number of queue pairs attached to the multicast group.
2528 static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num)
2530 return rdma_cap_ib_sa(device, port_num);
2534 * rdma_cap_af_ib - Check if the port of device has the capability
2535 * Native Infiniband Address.
2536 * @device: Device to check
2537 * @port_num: Port number to check
2539 * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default
2540 * GID. RoCE uses a different mechanism, but still generates a GID via
2541 * a prescribed mechanism and port specific data.
2543 * Return: true if the port uses a GID address to identify devices on the
2546 static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num)
2548 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_AF_IB;
2552 * rdma_cap_eth_ah - Check if the port of device has the capability
2553 * Ethernet Address Handle.
2554 * @device: Device to check
2555 * @port_num: Port number to check
2557 * RoCE is InfiniBand over Ethernet, and it uses a well defined technique
2558 * to fabricate GIDs over Ethernet/IP specific addresses native to the
2559 * port. Normally, packet headers are generated by the sending host
2560 * adapter, but when sending connectionless datagrams, we must manually
2561 * inject the proper headers for the fabric we are communicating over.
2563 * Return: true if we are running as a RoCE port and must force the
2564 * addition of a Global Route Header built from our Ethernet Address
2565 * Handle into our header list for connectionless packets.
2567 static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num)
2569 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_AH;
2573 * rdma_max_mad_size - Return the max MAD size required by this RDMA Port.
2576 * @port_num: Port number
2578 * This MAD size includes the MAD headers and MAD payload. No other headers
2581 * Return the max MAD size required by the Port. Will return 0 if the port
2582 * does not support MADs
2584 static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num)
2586 return device->port_immutable[port_num].max_mad_size;
2590 * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table
2591 * @device: Device to check
2592 * @port_num: Port number to check
2594 * RoCE GID table mechanism manages the various GIDs for a device.
2596 * NOTE: if allocating the port's GID table has failed, this call will still
2597 * return true, but any RoCE GID table API will fail.
2599 * Return: true if the port uses RoCE GID table mechanism in order to manage
2602 static inline bool rdma_cap_roce_gid_table(const struct ib_device *device,
2605 return rdma_protocol_roce(device, port_num) &&
2606 device->add_gid && device->del_gid;
2610 * Check if the device supports READ W/ INVALIDATE.
2612 static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num)
2615 * iWarp drivers must support READ W/ INVALIDATE. No other protocol
2616 * has support for it yet.
2618 return rdma_protocol_iwarp(dev, port_num);
2621 int ib_query_gid(struct ib_device *device,
2622 u8 port_num, int index, union ib_gid *gid,
2623 struct ib_gid_attr *attr);
2625 int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port,
2627 int ib_get_vf_config(struct ib_device *device, int vf, u8 port,
2628 struct ifla_vf_info *info);
2629 int ib_get_vf_stats(struct ib_device *device, int vf, u8 port,
2630 struct ifla_vf_stats *stats);
2631 int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid,
2634 int ib_query_pkey(struct ib_device *device,
2635 u8 port_num, u16 index, u16 *pkey);
2637 int ib_modify_device(struct ib_device *device,
2638 int device_modify_mask,
2639 struct ib_device_modify *device_modify);
2641 int ib_modify_port(struct ib_device *device,
2642 u8 port_num, int port_modify_mask,
2643 struct ib_port_modify *port_modify);
2645 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
2646 enum ib_gid_type gid_type, struct net_device *ndev,
2647 u8 *port_num, u16 *index);
2649 int ib_find_pkey(struct ib_device *device,
2650 u8 port_num, u16 pkey, u16 *index);
2654 * Create a memory registration for all memory in the system and place
2655 * the rkey for it into pd->unsafe_global_rkey. This can be used by
2656 * ULPs to avoid the overhead of dynamic MRs.
2658 * This flag is generally considered unsafe and must only be used in
2659 * extremly trusted environments. Every use of it will log a warning
2660 * in the kernel log.
2662 IB_PD_UNSAFE_GLOBAL_RKEY = 0x01,
2665 struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags,
2666 const char *caller);
2667 #define ib_alloc_pd(device, flags) \
2668 __ib_alloc_pd((device), (flags), __func__)
2669 void ib_dealloc_pd(struct ib_pd *pd);
2672 * ib_create_ah - Creates an address handle for the given address vector.
2673 * @pd: The protection domain associated with the address handle.
2674 * @ah_attr: The attributes of the address vector.
2676 * The address handle is used to reference a local or global destination
2677 * in all UD QP post sends.
2679 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
2682 * ib_get_gids_from_rdma_hdr - Get sgid and dgid from GRH or IPv4 header
2684 * @hdr: the L3 header to parse
2685 * @net_type: type of header to parse
2686 * @sgid: place to store source gid
2687 * @dgid: place to store destination gid
2689 int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr,
2690 enum rdma_network_type net_type,
2691 union ib_gid *sgid, union ib_gid *dgid);
2694 * ib_get_rdma_header_version - Get the header version
2695 * @hdr: the L3 header to parse
2697 int ib_get_rdma_header_version(const union rdma_network_hdr *hdr);
2700 * ib_init_ah_from_wc - Initializes address handle attributes from a
2702 * @device: Device on which the received message arrived.
2703 * @port_num: Port on which the received message arrived.
2704 * @wc: Work completion associated with the received message.
2705 * @grh: References the received global route header. This parameter is
2706 * ignored unless the work completion indicates that the GRH is valid.
2707 * @ah_attr: Returned attributes that can be used when creating an address
2708 * handle for replying to the message.
2710 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num,
2711 const struct ib_wc *wc, const struct ib_grh *grh,
2712 struct ib_ah_attr *ah_attr);
2715 * ib_create_ah_from_wc - Creates an address handle associated with the
2716 * sender of the specified work completion.
2717 * @pd: The protection domain associated with the address handle.
2718 * @wc: Work completion information associated with a received message.
2719 * @grh: References the received global route header. This parameter is
2720 * ignored unless the work completion indicates that the GRH is valid.
2721 * @port_num: The outbound port number to associate with the address.
2723 * The address handle is used to reference a local or global destination
2724 * in all UD QP post sends.
2726 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc,
2727 const struct ib_grh *grh, u8 port_num);
2730 * ib_modify_ah - Modifies the address vector associated with an address
2732 * @ah: The address handle to modify.
2733 * @ah_attr: The new address vector attributes to associate with the
2736 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
2739 * ib_query_ah - Queries the address vector associated with an address
2741 * @ah: The address handle to query.
2742 * @ah_attr: The address vector attributes associated with the address
2745 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
2748 * ib_destroy_ah - Destroys an address handle.
2749 * @ah: The address handle to destroy.
2751 int ib_destroy_ah(struct ib_ah *ah);
2754 * ib_create_srq - Creates a SRQ associated with the specified protection
2756 * @pd: The protection domain associated with the SRQ.
2757 * @srq_init_attr: A list of initial attributes required to create the
2758 * SRQ. If SRQ creation succeeds, then the attributes are updated to
2759 * the actual capabilities of the created SRQ.
2761 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
2762 * requested size of the SRQ, and set to the actual values allocated
2763 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
2764 * will always be at least as large as the requested values.
2766 struct ib_srq *ib_create_srq(struct ib_pd *pd,
2767 struct ib_srq_init_attr *srq_init_attr);
2770 * ib_modify_srq - Modifies the attributes for the specified SRQ.
2771 * @srq: The SRQ to modify.
2772 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
2773 * the current values of selected SRQ attributes are returned.
2774 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
2775 * are being modified.
2777 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
2778 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
2779 * the number of receives queued drops below the limit.
2781 int ib_modify_srq(struct ib_srq *srq,
2782 struct ib_srq_attr *srq_attr,
2783 enum ib_srq_attr_mask srq_attr_mask);
2786 * ib_query_srq - Returns the attribute list and current values for the
2788 * @srq: The SRQ to query.
2789 * @srq_attr: The attributes of the specified SRQ.
2791 int ib_query_srq(struct ib_srq *srq,
2792 struct ib_srq_attr *srq_attr);
2795 * ib_destroy_srq - Destroys the specified SRQ.
2796 * @srq: The SRQ to destroy.
2798 int ib_destroy_srq(struct ib_srq *srq);
2801 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
2802 * @srq: The SRQ to post the work request on.
2803 * @recv_wr: A list of work requests to post on the receive queue.
2804 * @bad_recv_wr: On an immediate failure, this parameter will reference
2805 * the work request that failed to be posted on the QP.
2807 static inline int ib_post_srq_recv(struct ib_srq *srq,
2808 struct ib_recv_wr *recv_wr,
2809 struct ib_recv_wr **bad_recv_wr)
2811 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
2815 * ib_create_qp - Creates a QP associated with the specified protection
2817 * @pd: The protection domain associated with the QP.
2818 * @qp_init_attr: A list of initial attributes required to create the
2819 * QP. If QP creation succeeds, then the attributes are updated to
2820 * the actual capabilities of the created QP.
2822 struct ib_qp *ib_create_qp(struct ib_pd *pd,
2823 struct ib_qp_init_attr *qp_init_attr);
2826 * ib_modify_qp - Modifies the attributes for the specified QP and then
2827 * transitions the QP to the given state.
2828 * @qp: The QP to modify.
2829 * @qp_attr: On input, specifies the QP attributes to modify. On output,
2830 * the current values of selected QP attributes are returned.
2831 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
2832 * are being modified.
2834 int ib_modify_qp(struct ib_qp *qp,
2835 struct ib_qp_attr *qp_attr,
2839 * ib_query_qp - Returns the attribute list and current values for the
2841 * @qp: The QP to query.
2842 * @qp_attr: The attributes of the specified QP.
2843 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
2844 * @qp_init_attr: Additional attributes of the selected QP.
2846 * The qp_attr_mask may be used to limit the query to gathering only the
2847 * selected attributes.
2849 int ib_query_qp(struct ib_qp *qp,
2850 struct ib_qp_attr *qp_attr,
2852 struct ib_qp_init_attr *qp_init_attr);
2855 * ib_destroy_qp - Destroys the specified QP.
2856 * @qp: The QP to destroy.
2858 int ib_destroy_qp(struct ib_qp *qp);
2861 * ib_open_qp - Obtain a reference to an existing sharable QP.
2862 * @xrcd - XRC domain
2863 * @qp_open_attr: Attributes identifying the QP to open.
2865 * Returns a reference to a sharable QP.
2867 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
2868 struct ib_qp_open_attr *qp_open_attr);
2871 * ib_close_qp - Release an external reference to a QP.
2872 * @qp: The QP handle to release
2874 * The opened QP handle is released by the caller. The underlying
2875 * shared QP is not destroyed until all internal references are released.
2877 int ib_close_qp(struct ib_qp *qp);
2880 * ib_post_send - Posts a list of work requests to the send queue of
2882 * @qp: The QP to post the work request on.
2883 * @send_wr: A list of work requests to post on the send queue.
2884 * @bad_send_wr: On an immediate failure, this parameter will reference
2885 * the work request that failed to be posted on the QP.
2887 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
2888 * error is returned, the QP state shall not be affected,
2889 * ib_post_send() will return an immediate error after queueing any
2890 * earlier work requests in the list.
2892 static inline int ib_post_send(struct ib_qp *qp,
2893 struct ib_send_wr *send_wr,
2894 struct ib_send_wr **bad_send_wr)
2896 return qp->device->post_send(qp, send_wr, bad_send_wr);
2900 * ib_post_recv - Posts a list of work requests to the receive queue of
2902 * @qp: The QP to post the work request on.
2903 * @recv_wr: A list of work requests to post on the receive queue.
2904 * @bad_recv_wr: On an immediate failure, this parameter will reference
2905 * the work request that failed to be posted on the QP.
2907 static inline int ib_post_recv(struct ib_qp *qp,
2908 struct ib_recv_wr *recv_wr,
2909 struct ib_recv_wr **bad_recv_wr)
2911 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
2914 struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private,
2915 int nr_cqe, int comp_vector, enum ib_poll_context poll_ctx);
2916 void ib_free_cq(struct ib_cq *cq);
2917 int ib_process_cq_direct(struct ib_cq *cq, int budget);
2920 * ib_create_cq - Creates a CQ on the specified device.
2921 * @device: The device on which to create the CQ.
2922 * @comp_handler: A user-specified callback that is invoked when a
2923 * completion event occurs on the CQ.
2924 * @event_handler: A user-specified callback that is invoked when an
2925 * asynchronous event not associated with a completion occurs on the CQ.
2926 * @cq_context: Context associated with the CQ returned to the user via
2927 * the associated completion and event handlers.
2928 * @cq_attr: The attributes the CQ should be created upon.
2930 * Users can examine the cq structure to determine the actual CQ size.
2932 struct ib_cq *ib_create_cq(struct ib_device *device,
2933 ib_comp_handler comp_handler,
2934 void (*event_handler)(struct ib_event *, void *),
2936 const struct ib_cq_init_attr *cq_attr);
2939 * ib_resize_cq - Modifies the capacity of the CQ.
2940 * @cq: The CQ to resize.
2941 * @cqe: The minimum size of the CQ.
2943 * Users can examine the cq structure to determine the actual CQ size.
2945 int ib_resize_cq(struct ib_cq *cq, int cqe);
2948 * ib_modify_cq - Modifies moderation params of the CQ
2949 * @cq: The CQ to modify.
2950 * @cq_count: number of CQEs that will trigger an event
2951 * @cq_period: max period of time in usec before triggering an event
2954 int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
2957 * ib_destroy_cq - Destroys the specified CQ.
2958 * @cq: The CQ to destroy.
2960 int ib_destroy_cq(struct ib_cq *cq);
2963 * ib_poll_cq - poll a CQ for completion(s)
2964 * @cq:the CQ being polled
2965 * @num_entries:maximum number of completions to return
2966 * @wc:array of at least @num_entries &struct ib_wc where completions
2969 * Poll a CQ for (possibly multiple) completions. If the return value
2970 * is < 0, an error occurred. If the return value is >= 0, it is the
2971 * number of completions returned. If the return value is
2972 * non-negative and < num_entries, then the CQ was emptied.
2974 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
2977 return cq->device->poll_cq(cq, num_entries, wc);
2981 * ib_peek_cq - Returns the number of unreaped completions currently
2982 * on the specified CQ.
2983 * @cq: The CQ to peek.
2984 * @wc_cnt: A minimum number of unreaped completions to check for.
2986 * If the number of unreaped completions is greater than or equal to wc_cnt,
2987 * this function returns wc_cnt, otherwise, it returns the actual number of
2988 * unreaped completions.
2990 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
2993 * ib_req_notify_cq - Request completion notification on a CQ.
2994 * @cq: The CQ to generate an event for.
2996 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
2997 * to request an event on the next solicited event or next work
2998 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
2999 * may also be |ed in to request a hint about missed events, as
3003 * < 0 means an error occurred while requesting notification
3004 * == 0 means notification was requested successfully, and if
3005 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
3006 * were missed and it is safe to wait for another event. In
3007 * this case is it guaranteed that any work completions added
3008 * to the CQ since the last CQ poll will trigger a completion
3009 * notification event.
3010 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
3011 * in. It means that the consumer must poll the CQ again to
3012 * make sure it is empty to avoid missing an event because of a
3013 * race between requesting notification and an entry being
3014 * added to the CQ. This return value means it is possible
3015 * (but not guaranteed) that a work completion has been added
3016 * to the CQ since the last poll without triggering a
3017 * completion notification event.
3019 static inline int ib_req_notify_cq(struct ib_cq *cq,
3020 enum ib_cq_notify_flags flags)
3022 return cq->device->req_notify_cq(cq, flags);
3026 * ib_req_ncomp_notif - Request completion notification when there are
3027 * at least the specified number of unreaped completions on the CQ.
3028 * @cq: The CQ to generate an event for.
3029 * @wc_cnt: The number of unreaped completions that should be on the
3030 * CQ before an event is generated.
3032 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
3034 return cq->device->req_ncomp_notif ?
3035 cq->device->req_ncomp_notif(cq, wc_cnt) :
3040 * ib_dma_mapping_error - check a DMA addr for error
3041 * @dev: The device for which the dma_addr was created
3042 * @dma_addr: The DMA address to check
3044 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
3047 return dev->dma_ops->mapping_error(dev, dma_addr);
3048 return dma_mapping_error(dev->dma_device, dma_addr);
3052 * ib_dma_map_single - Map a kernel virtual address to DMA address
3053 * @dev: The device for which the dma_addr is to be created
3054 * @cpu_addr: The kernel virtual address
3055 * @size: The size of the region in bytes
3056 * @direction: The direction of the DMA
3058 static inline u64 ib_dma_map_single(struct ib_device *dev,
3059 void *cpu_addr, size_t size,
3060 enum dma_data_direction direction)
3063 return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
3064 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
3068 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
3069 * @dev: The device for which the DMA address was created
3070 * @addr: The DMA address
3071 * @size: The size of the region in bytes
3072 * @direction: The direction of the DMA
3074 static inline void ib_dma_unmap_single(struct ib_device *dev,
3075 u64 addr, size_t size,
3076 enum dma_data_direction direction)
3079 dev->dma_ops->unmap_single(dev, addr, size, direction);
3081 dma_unmap_single(dev->dma_device, addr, size, direction);
3084 static inline u64 ib_dma_map_single_attrs(struct ib_device *dev,
3085 void *cpu_addr, size_t size,
3086 enum dma_data_direction direction,
3087 unsigned long dma_attrs)
3089 return dma_map_single_attrs(dev->dma_device, cpu_addr, size,
3090 direction, dma_attrs);
3093 static inline void ib_dma_unmap_single_attrs(struct ib_device *dev,
3094 u64 addr, size_t size,
3095 enum dma_data_direction direction,
3096 unsigned long dma_attrs)
3098 return dma_unmap_single_attrs(dev->dma_device, addr, size,
3099 direction, dma_attrs);
3103 * ib_dma_map_page - Map a physical page to DMA address
3104 * @dev: The device for which the dma_addr is to be created
3105 * @page: The page to be mapped
3106 * @offset: The offset within the page
3107 * @size: The size of the region in bytes
3108 * @direction: The direction of the DMA
3110 static inline u64 ib_dma_map_page(struct ib_device *dev,
3112 unsigned long offset,
3114 enum dma_data_direction direction)
3117 return dev->dma_ops->map_page(dev, page, offset, size, direction);
3118 return dma_map_page(dev->dma_device, page, offset, size, direction);
3122 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
3123 * @dev: The device for which the DMA address was created
3124 * @addr: The DMA address
3125 * @size: The size of the region in bytes
3126 * @direction: The direction of the DMA
3128 static inline void ib_dma_unmap_page(struct ib_device *dev,
3129 u64 addr, size_t size,
3130 enum dma_data_direction direction)
3133 dev->dma_ops->unmap_page(dev, addr, size, direction);
3135 dma_unmap_page(dev->dma_device, addr, size, direction);
3139 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
3140 * @dev: The device for which the DMA addresses are to be created
3141 * @sg: The array of scatter/gather entries
3142 * @nents: The number of scatter/gather entries
3143 * @direction: The direction of the DMA
3145 static inline int ib_dma_map_sg(struct ib_device *dev,
3146 struct scatterlist *sg, int nents,
3147 enum dma_data_direction direction)
3150 return dev->dma_ops->map_sg(dev, sg, nents, direction);
3151 return dma_map_sg(dev->dma_device, sg, nents, direction);
3155 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
3156 * @dev: The device for which the DMA addresses were created
3157 * @sg: The array of scatter/gather entries
3158 * @nents: The number of scatter/gather entries
3159 * @direction: The direction of the DMA
3161 static inline void ib_dma_unmap_sg(struct ib_device *dev,
3162 struct scatterlist *sg, int nents,
3163 enum dma_data_direction direction)
3166 dev->dma_ops->unmap_sg(dev, sg, nents, direction);
3168 dma_unmap_sg(dev->dma_device, sg, nents, direction);
3171 static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
3172 struct scatterlist *sg, int nents,
3173 enum dma_data_direction direction,
3174 unsigned long dma_attrs)
3177 return dev->dma_ops->map_sg_attrs(dev, sg, nents, direction,
3180 return dma_map_sg_attrs(dev->dma_device, sg, nents, direction,
3184 static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
3185 struct scatterlist *sg, int nents,
3186 enum dma_data_direction direction,
3187 unsigned long dma_attrs)
3190 return dev->dma_ops->unmap_sg_attrs(dev, sg, nents, direction,
3193 dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction,
3197 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
3198 * @dev: The device for which the DMA addresses were created
3199 * @sg: The scatter/gather entry
3201 * Note: this function is obsolete. To do: change all occurrences of
3202 * ib_sg_dma_address() into sg_dma_address().
3204 static inline u64 ib_sg_dma_address(struct ib_device *dev,
3205 struct scatterlist *sg)
3207 return sg_dma_address(sg);
3211 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
3212 * @dev: The device for which the DMA addresses were created
3213 * @sg: The scatter/gather entry
3215 * Note: this function is obsolete. To do: change all occurrences of
3216 * ib_sg_dma_len() into sg_dma_len().
3218 static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
3219 struct scatterlist *sg)
3221 return sg_dma_len(sg);
3225 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
3226 * @dev: The device for which the DMA address was created
3227 * @addr: The DMA address
3228 * @size: The size of the region in bytes
3229 * @dir: The direction of the DMA
3231 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
3234 enum dma_data_direction dir)
3237 dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
3239 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
3243 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
3244 * @dev: The device for which the DMA address was created
3245 * @addr: The DMA address
3246 * @size: The size of the region in bytes
3247 * @dir: The direction of the DMA
3249 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
3252 enum dma_data_direction dir)
3255 dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
3257 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
3261 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
3262 * @dev: The device for which the DMA address is requested
3263 * @size: The size of the region to allocate in bytes
3264 * @dma_handle: A pointer for returning the DMA address of the region
3265 * @flag: memory allocator flags
3267 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
3273 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
3278 ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
3279 *dma_handle = handle;
3285 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
3286 * @dev: The device for which the DMA addresses were allocated
3287 * @size: The size of the region
3288 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
3289 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
3291 static inline void ib_dma_free_coherent(struct ib_device *dev,
3292 size_t size, void *cpu_addr,
3296 dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
3298 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
3302 * ib_dereg_mr - Deregisters a memory region and removes it from the
3303 * HCA translation table.
3304 * @mr: The memory region to deregister.
3306 * This function can fail, if the memory region has memory windows bound to it.
3308 int ib_dereg_mr(struct ib_mr *mr);
3310 struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
3311 enum ib_mr_type mr_type,
3315 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
3317 * @mr - struct ib_mr pointer to be updated.
3318 * @newkey - new key to be used.
3320 static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey)
3322 mr->lkey = (mr->lkey & 0xffffff00) | newkey;
3323 mr->rkey = (mr->rkey & 0xffffff00) | newkey;
3327 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
3328 * for calculating a new rkey for type 2 memory windows.
3329 * @rkey - the rkey to increment.
3331 static inline u32 ib_inc_rkey(u32 rkey)
3333 const u32 mask = 0x000000ff;
3334 return ((rkey + 1) & mask) | (rkey & ~mask);
3338 * ib_alloc_fmr - Allocates a unmapped fast memory region.
3339 * @pd: The protection domain associated with the unmapped region.
3340 * @mr_access_flags: Specifies the memory access rights.
3341 * @fmr_attr: Attributes of the unmapped region.
3343 * A fast memory region must be mapped before it can be used as part of
3346 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
3347 int mr_access_flags,
3348 struct ib_fmr_attr *fmr_attr);
3351 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
3352 * @fmr: The fast memory region to associate with the pages.
3353 * @page_list: An array of physical pages to map to the fast memory region.
3354 * @list_len: The number of pages in page_list.
3355 * @iova: The I/O virtual address to use with the mapped region.
3357 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
3358 u64 *page_list, int list_len,
3361 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
3365 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
3366 * @fmr_list: A linked list of fast memory regions to unmap.
3368 int ib_unmap_fmr(struct list_head *fmr_list);
3371 * ib_dealloc_fmr - Deallocates a fast memory region.
3372 * @fmr: The fast memory region to deallocate.
3374 int ib_dealloc_fmr(struct ib_fmr *fmr);
3377 * ib_attach_mcast - Attaches the specified QP to a multicast group.
3378 * @qp: QP to attach to the multicast group. The QP must be type
3380 * @gid: Multicast group GID.
3381 * @lid: Multicast group LID in host byte order.
3383 * In order to send and receive multicast packets, subnet
3384 * administration must have created the multicast group and configured
3385 * the fabric appropriately. The port associated with the specified
3386 * QP must also be a member of the multicast group.
3388 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
3391 * ib_detach_mcast - Detaches the specified QP from a multicast group.
3392 * @qp: QP to detach from the multicast group.
3393 * @gid: Multicast group GID.
3394 * @lid: Multicast group LID in host byte order.
3396 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
3399 * ib_alloc_xrcd - Allocates an XRC domain.
3400 * @device: The device on which to allocate the XRC domain.
3402 struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device);
3405 * ib_dealloc_xrcd - Deallocates an XRC domain.
3406 * @xrcd: The XRC domain to deallocate.
3408 int ib_dealloc_xrcd(struct ib_xrcd *xrcd);
3410 struct ib_flow *ib_create_flow(struct ib_qp *qp,
3411 struct ib_flow_attr *flow_attr, int domain);
3412 int ib_destroy_flow(struct ib_flow *flow_id);
3414 static inline int ib_check_mr_access(int flags)
3417 * Local write permission is required if remote write or
3418 * remote atomic permission is also requested.
3420 if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
3421 !(flags & IB_ACCESS_LOCAL_WRITE))
3428 * ib_check_mr_status: lightweight check of MR status.
3429 * This routine may provide status checks on a selected
3430 * ib_mr. first use is for signature status check.
3432 * @mr: A memory region.
3433 * @check_mask: Bitmask of which checks to perform from
3434 * ib_mr_status_check enumeration.
3435 * @mr_status: The container of relevant status checks.
3436 * failed checks will be indicated in the status bitmask
3437 * and the relevant info shall be in the error item.
3439 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
3440 struct ib_mr_status *mr_status);
3442 struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port,
3443 u16 pkey, const union ib_gid *gid,
3444 const struct sockaddr *addr);
3445 struct ib_wq *ib_create_wq(struct ib_pd *pd,
3446 struct ib_wq_init_attr *init_attr);
3447 int ib_destroy_wq(struct ib_wq *wq);
3448 int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *attr,
3450 struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device,
3451 struct ib_rwq_ind_table_init_attr*
3452 wq_ind_table_init_attr);
3453 int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);
3455 int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
3456 unsigned int *sg_offset, unsigned int page_size);
3459 ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
3460 unsigned int *sg_offset, unsigned int page_size)
3464 n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size);
3470 int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents,
3471 unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64));
3473 void ib_drain_rq(struct ib_qp *qp);
3474 void ib_drain_sq(struct ib_qp *qp);
3475 void ib_drain_qp(struct ib_qp *qp);
3477 int ib_resolve_eth_dmac(struct ib_device *device,
3478 struct ib_ah_attr *ah_attr);
3479 #endif /* IB_VERBS_H */