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>
58 #include <linux/netdevice.h>
60 #include <linux/if_link.h>
61 #include <linux/atomic.h>
62 #include <linux/mmu_notifier.h>
63 #include <linux/uaccess.h>
64 #include <linux/cgroup_rdma.h>
65 #include <uapi/rdma/ib_user_verbs.h>
66 #include <rdma/restrack.h>
67 #include <uapi/rdma/rdma_user_ioctl.h>
68 #include <uapi/rdma/ib_user_ioctl_verbs.h>
70 #define IB_FW_VERSION_NAME_MAX ETHTOOL_FWVERS_LEN
72 extern struct workqueue_struct *ib_wq;
73 extern struct workqueue_struct *ib_comp_wq;
83 extern union ib_gid zgid;
86 /* If link layer is Ethernet, this is RoCE V1 */
89 IB_GID_TYPE_ROCE_UDP_ENCAP = 1,
93 #define ROCE_V2_UDP_DPORT 4791
95 struct net_device *ndev;
96 struct ib_device *device;
97 enum ib_gid_type gid_type;
102 enum rdma_node_type {
103 /* IB values map to NodeInfo:NodeType. */
113 /* set the local administered indication */
114 IB_SA_WELL_KNOWN_GUID = BIT_ULL(57) | 2,
117 enum rdma_transport_type {
119 RDMA_TRANSPORT_IWARP,
120 RDMA_TRANSPORT_USNIC,
121 RDMA_TRANSPORT_USNIC_UDP
124 enum rdma_protocol_type {
128 RDMA_PROTOCOL_USNIC_UDP
131 __attribute_const__ enum rdma_transport_type
132 rdma_node_get_transport(enum rdma_node_type node_type);
134 enum rdma_network_type {
136 RDMA_NETWORK_ROCE_V1 = RDMA_NETWORK_IB,
141 static inline enum ib_gid_type ib_network_to_gid_type(enum rdma_network_type network_type)
143 if (network_type == RDMA_NETWORK_IPV4 ||
144 network_type == RDMA_NETWORK_IPV6)
145 return IB_GID_TYPE_ROCE_UDP_ENCAP;
147 /* IB_GID_TYPE_IB same as RDMA_NETWORK_ROCE_V1 */
148 return IB_GID_TYPE_IB;
151 static inline enum rdma_network_type ib_gid_to_network_type(enum ib_gid_type gid_type,
154 if (gid_type == IB_GID_TYPE_IB)
155 return RDMA_NETWORK_IB;
157 if (ipv6_addr_v4mapped((struct in6_addr *)gid))
158 return RDMA_NETWORK_IPV4;
160 return RDMA_NETWORK_IPV6;
163 enum rdma_link_layer {
164 IB_LINK_LAYER_UNSPECIFIED,
165 IB_LINK_LAYER_INFINIBAND,
166 IB_LINK_LAYER_ETHERNET,
169 enum ib_device_cap_flags {
170 IB_DEVICE_RESIZE_MAX_WR = (1 << 0),
171 IB_DEVICE_BAD_PKEY_CNTR = (1 << 1),
172 IB_DEVICE_BAD_QKEY_CNTR = (1 << 2),
173 IB_DEVICE_RAW_MULTI = (1 << 3),
174 IB_DEVICE_AUTO_PATH_MIG = (1 << 4),
175 IB_DEVICE_CHANGE_PHY_PORT = (1 << 5),
176 IB_DEVICE_UD_AV_PORT_ENFORCE = (1 << 6),
177 IB_DEVICE_CURR_QP_STATE_MOD = (1 << 7),
178 IB_DEVICE_SHUTDOWN_PORT = (1 << 8),
179 /* Not in use, former INIT_TYPE = (1 << 9),*/
180 IB_DEVICE_PORT_ACTIVE_EVENT = (1 << 10),
181 IB_DEVICE_SYS_IMAGE_GUID = (1 << 11),
182 IB_DEVICE_RC_RNR_NAK_GEN = (1 << 12),
183 IB_DEVICE_SRQ_RESIZE = (1 << 13),
184 IB_DEVICE_N_NOTIFY_CQ = (1 << 14),
187 * This device supports a per-device lkey or stag that can be
188 * used without performing a memory registration for the local
189 * memory. Note that ULPs should never check this flag, but
190 * instead of use the local_dma_lkey flag in the ib_pd structure,
191 * which will always contain a usable lkey.
193 IB_DEVICE_LOCAL_DMA_LKEY = (1 << 15),
194 /* Reserved, old SEND_W_INV = (1 << 16),*/
195 IB_DEVICE_MEM_WINDOW = (1 << 17),
197 * Devices should set IB_DEVICE_UD_IP_SUM if they support
198 * insertion of UDP and TCP checksum on outgoing UD IPoIB
199 * messages and can verify the validity of checksum for
200 * incoming messages. Setting this flag implies that the
201 * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
203 IB_DEVICE_UD_IP_CSUM = (1 << 18),
204 IB_DEVICE_UD_TSO = (1 << 19),
205 IB_DEVICE_XRC = (1 << 20),
208 * This device supports the IB "base memory management extension",
209 * which includes support for fast registrations (IB_WR_REG_MR,
210 * IB_WR_LOCAL_INV and IB_WR_SEND_WITH_INV verbs). This flag should
211 * also be set by any iWarp device which must support FRs to comply
212 * to the iWarp verbs spec. iWarp devices also support the
213 * IB_WR_RDMA_READ_WITH_INV verb for RDMA READs that invalidate the
216 IB_DEVICE_MEM_MGT_EXTENSIONS = (1 << 21),
217 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1 << 22),
218 IB_DEVICE_MEM_WINDOW_TYPE_2A = (1 << 23),
219 IB_DEVICE_MEM_WINDOW_TYPE_2B = (1 << 24),
220 IB_DEVICE_RC_IP_CSUM = (1 << 25),
221 /* Deprecated. Please use IB_RAW_PACKET_CAP_IP_CSUM. */
222 IB_DEVICE_RAW_IP_CSUM = (1 << 26),
224 * Devices should set IB_DEVICE_CROSS_CHANNEL if they
225 * support execution of WQEs that involve synchronization
226 * of I/O operations with single completion queue managed
229 IB_DEVICE_CROSS_CHANNEL = (1 << 27),
230 IB_DEVICE_MANAGED_FLOW_STEERING = (1 << 29),
231 IB_DEVICE_SIGNATURE_HANDOVER = (1 << 30),
232 IB_DEVICE_ON_DEMAND_PAGING = (1ULL << 31),
233 IB_DEVICE_SG_GAPS_REG = (1ULL << 32),
234 IB_DEVICE_VIRTUAL_FUNCTION = (1ULL << 33),
235 /* Deprecated. Please use IB_RAW_PACKET_CAP_SCATTER_FCS. */
236 IB_DEVICE_RAW_SCATTER_FCS = (1ULL << 34),
237 IB_DEVICE_RDMA_NETDEV_OPA_VNIC = (1ULL << 35),
238 /* The device supports padding incoming writes to cacheline. */
239 IB_DEVICE_PCI_WRITE_END_PADDING = (1ULL << 36),
242 enum ib_signature_prot_cap {
243 IB_PROT_T10DIF_TYPE_1 = 1,
244 IB_PROT_T10DIF_TYPE_2 = 1 << 1,
245 IB_PROT_T10DIF_TYPE_3 = 1 << 2,
248 enum ib_signature_guard_cap {
249 IB_GUARD_T10DIF_CRC = 1,
250 IB_GUARD_T10DIF_CSUM = 1 << 1,
259 enum ib_odp_general_cap_bits {
260 IB_ODP_SUPPORT = 1 << 0,
261 IB_ODP_SUPPORT_IMPLICIT = 1 << 1,
264 enum ib_odp_transport_cap_bits {
265 IB_ODP_SUPPORT_SEND = 1 << 0,
266 IB_ODP_SUPPORT_RECV = 1 << 1,
267 IB_ODP_SUPPORT_WRITE = 1 << 2,
268 IB_ODP_SUPPORT_READ = 1 << 3,
269 IB_ODP_SUPPORT_ATOMIC = 1 << 4,
273 uint64_t general_caps;
275 uint32_t rc_odp_caps;
276 uint32_t uc_odp_caps;
277 uint32_t ud_odp_caps;
278 } per_transport_caps;
282 /* Corresponding bit will be set if qp type from
283 * 'enum ib_qp_type' is supported, e.g.
284 * supported_qpts |= 1 << IB_QPT_UD
287 u32 max_rwq_indirection_tables;
288 u32 max_rwq_indirection_table_size;
291 enum ib_tm_cap_flags {
292 /* Support tag matching on RC transport */
293 IB_TM_CAP_RC = 1 << 0,
297 /* Max size of RNDV header */
298 u32 max_rndv_hdr_size;
299 /* Max number of entries in tag matching list */
301 /* From enum ib_tm_cap_flags */
303 /* Max number of outstanding list operations */
305 /* Max number of SGE in tag matching entry */
309 struct ib_cq_init_attr {
315 enum ib_cq_attr_mask {
316 IB_CQ_MODERATE = 1 << 0,
320 u16 max_cq_moderation_count;
321 u16 max_cq_moderation_period;
324 struct ib_dm_mr_attr {
330 struct ib_dm_alloc_attr {
336 struct ib_device_attr {
338 __be64 sys_image_guid;
346 u64 device_cap_flags;
356 int max_qp_init_rd_atom;
357 int max_ee_init_rd_atom;
358 enum ib_atomic_cap atomic_cap;
359 enum ib_atomic_cap masked_atomic_cap;
366 int max_mcast_qp_attach;
367 int max_total_mcast_qp_attach;
374 unsigned int max_fast_reg_page_list_len;
376 u8 local_ca_ack_delay;
379 struct ib_odp_caps odp_caps;
380 uint64_t timestamp_mask;
381 uint64_t hca_core_clock; /* in KHZ */
382 struct ib_rss_caps rss_caps;
384 u32 raw_packet_caps; /* Use ib_raw_packet_caps enum */
385 struct ib_tm_caps tm_caps;
386 struct ib_cq_caps cq_caps;
398 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
401 case IB_MTU_256: return 256;
402 case IB_MTU_512: return 512;
403 case IB_MTU_1024: return 1024;
404 case IB_MTU_2048: return 2048;
405 case IB_MTU_4096: return 4096;
410 static inline enum ib_mtu ib_mtu_int_to_enum(int mtu)
414 else if (mtu >= 2048)
416 else if (mtu >= 1024)
430 IB_PORT_ACTIVE_DEFER = 5
433 enum ib_port_cap_flags {
435 IB_PORT_NOTICE_SUP = 1 << 2,
436 IB_PORT_TRAP_SUP = 1 << 3,
437 IB_PORT_OPT_IPD_SUP = 1 << 4,
438 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
439 IB_PORT_SL_MAP_SUP = 1 << 6,
440 IB_PORT_MKEY_NVRAM = 1 << 7,
441 IB_PORT_PKEY_NVRAM = 1 << 8,
442 IB_PORT_LED_INFO_SUP = 1 << 9,
443 IB_PORT_SM_DISABLED = 1 << 10,
444 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
445 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
446 IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14,
447 IB_PORT_CM_SUP = 1 << 16,
448 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
449 IB_PORT_REINIT_SUP = 1 << 18,
450 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
451 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
452 IB_PORT_DR_NOTICE_SUP = 1 << 21,
453 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
454 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
455 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
456 IB_PORT_CLIENT_REG_SUP = 1 << 25,
457 IB_PORT_IP_BASED_GIDS = 1 << 26,
467 static inline int ib_width_enum_to_int(enum ib_port_width width)
470 case IB_WIDTH_1X: return 1;
471 case IB_WIDTH_4X: return 4;
472 case IB_WIDTH_8X: return 8;
473 case IB_WIDTH_12X: return 12;
489 * struct rdma_hw_stats
490 * @lock - Mutex to protect parallel write access to lifespan and values
491 * of counters, which are 64bits and not guaranteeed to be written
492 * atomicaly on 32bits systems.
493 * @timestamp - Used by the core code to track when the last update was
494 * @lifespan - Used by the core code to determine how old the counters
495 * should be before being updated again. Stored in jiffies, defaults
496 * to 10 milliseconds, drivers can override the default be specifying
497 * their own value during their allocation routine.
498 * @name - Array of pointers to static names used for the counters in
500 * @num_counters - How many hardware counters there are. If name is
501 * shorter than this number, a kernel oops will result. Driver authors
502 * are encouraged to leave BUILD_BUG_ON(ARRAY_SIZE(@name) < num_counters)
503 * in their code to prevent this.
504 * @value - Array of u64 counters that are accessed by the sysfs code and
505 * filled in by the drivers get_stats routine
507 struct rdma_hw_stats {
508 struct mutex lock; /* Protect lifespan and values[] */
509 unsigned long timestamp;
510 unsigned long lifespan;
511 const char * const *names;
516 #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10
518 * rdma_alloc_hw_stats_struct - Helper function to allocate dynamic struct
520 * @names - Array of static const char *
521 * @num_counters - How many elements in array
522 * @lifespan - How many milliseconds between updates
524 static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct(
525 const char * const *names, int num_counters,
526 unsigned long lifespan)
528 struct rdma_hw_stats *stats;
530 stats = kzalloc(sizeof(*stats) + num_counters * sizeof(u64),
534 stats->names = names;
535 stats->num_counters = num_counters;
536 stats->lifespan = msecs_to_jiffies(lifespan);
542 /* Define bits for the various functionality this port needs to be supported by
545 /* Management 0x00000FFF */
546 #define RDMA_CORE_CAP_IB_MAD 0x00000001
547 #define RDMA_CORE_CAP_IB_SMI 0x00000002
548 #define RDMA_CORE_CAP_IB_CM 0x00000004
549 #define RDMA_CORE_CAP_IW_CM 0x00000008
550 #define RDMA_CORE_CAP_IB_SA 0x00000010
551 #define RDMA_CORE_CAP_OPA_MAD 0x00000020
553 /* Address format 0x000FF000 */
554 #define RDMA_CORE_CAP_AF_IB 0x00001000
555 #define RDMA_CORE_CAP_ETH_AH 0x00002000
556 #define RDMA_CORE_CAP_OPA_AH 0x00004000
558 /* Protocol 0xFFF00000 */
559 #define RDMA_CORE_CAP_PROT_IB 0x00100000
560 #define RDMA_CORE_CAP_PROT_ROCE 0x00200000
561 #define RDMA_CORE_CAP_PROT_IWARP 0x00400000
562 #define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000
563 #define RDMA_CORE_CAP_PROT_RAW_PACKET 0x01000000
564 #define RDMA_CORE_CAP_PROT_USNIC 0x02000000
566 #define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \
567 | RDMA_CORE_CAP_IB_MAD \
568 | RDMA_CORE_CAP_IB_SMI \
569 | RDMA_CORE_CAP_IB_CM \
570 | RDMA_CORE_CAP_IB_SA \
571 | RDMA_CORE_CAP_AF_IB)
572 #define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \
573 | RDMA_CORE_CAP_IB_MAD \
574 | RDMA_CORE_CAP_IB_CM \
575 | RDMA_CORE_CAP_AF_IB \
576 | RDMA_CORE_CAP_ETH_AH)
577 #define RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP \
578 (RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP \
579 | RDMA_CORE_CAP_IB_MAD \
580 | RDMA_CORE_CAP_IB_CM \
581 | RDMA_CORE_CAP_AF_IB \
582 | RDMA_CORE_CAP_ETH_AH)
583 #define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \
584 | RDMA_CORE_CAP_IW_CM)
585 #define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \
586 | RDMA_CORE_CAP_OPA_MAD)
588 #define RDMA_CORE_PORT_RAW_PACKET (RDMA_CORE_CAP_PROT_RAW_PACKET)
590 #define RDMA_CORE_PORT_USNIC (RDMA_CORE_CAP_PROT_USNIC)
592 struct ib_port_attr {
594 enum ib_port_state state;
596 enum ib_mtu active_mtu;
616 enum ib_device_modify_flags {
617 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
618 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
621 #define IB_DEVICE_NODE_DESC_MAX 64
623 struct ib_device_modify {
625 char node_desc[IB_DEVICE_NODE_DESC_MAX];
628 enum ib_port_modify_flags {
629 IB_PORT_SHUTDOWN = 1,
630 IB_PORT_INIT_TYPE = (1<<2),
631 IB_PORT_RESET_QKEY_CNTR = (1<<3),
632 IB_PORT_OPA_MASK_CHG = (1<<4)
635 struct ib_port_modify {
636 u32 set_port_cap_mask;
637 u32 clr_port_cap_mask;
645 IB_EVENT_QP_ACCESS_ERR,
649 IB_EVENT_PATH_MIG_ERR,
650 IB_EVENT_DEVICE_FATAL,
651 IB_EVENT_PORT_ACTIVE,
654 IB_EVENT_PKEY_CHANGE,
657 IB_EVENT_SRQ_LIMIT_REACHED,
658 IB_EVENT_QP_LAST_WQE_REACHED,
659 IB_EVENT_CLIENT_REREGISTER,
664 const char *__attribute_const__ ib_event_msg(enum ib_event_type event);
667 struct ib_device *device;
675 enum ib_event_type event;
678 struct ib_event_handler {
679 struct ib_device *device;
680 void (*handler)(struct ib_event_handler *, struct ib_event *);
681 struct list_head list;
684 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
686 (_ptr)->device = _device; \
687 (_ptr)->handler = _handler; \
688 INIT_LIST_HEAD(&(_ptr)->list); \
691 struct ib_global_route {
700 __be32 version_tclass_flow;
708 union rdma_network_hdr {
711 /* The IB spec states that if it's IPv4, the header
712 * is located in the last 20 bytes of the header.
715 struct iphdr roce4grh;
719 #define IB_QPN_MASK 0xFFFFFF
722 IB_MULTICAST_QPN = 0xffffff
725 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
726 #define IB_MULTICAST_LID_BASE cpu_to_be16(0xC000)
733 IB_RATE_PORT_CURRENT = 0,
734 IB_RATE_2_5_GBPS = 2,
742 IB_RATE_120_GBPS = 10,
743 IB_RATE_14_GBPS = 11,
744 IB_RATE_56_GBPS = 12,
745 IB_RATE_112_GBPS = 13,
746 IB_RATE_168_GBPS = 14,
747 IB_RATE_25_GBPS = 15,
748 IB_RATE_100_GBPS = 16,
749 IB_RATE_200_GBPS = 17,
750 IB_RATE_300_GBPS = 18
754 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
755 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
756 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
757 * @rate: rate to convert.
759 __attribute_const__ int ib_rate_to_mult(enum ib_rate rate);
762 * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
763 * For example, IB_RATE_2_5_GBPS will be converted to 2500.
764 * @rate: rate to convert.
766 __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate);
770 * enum ib_mr_type - memory region type
771 * @IB_MR_TYPE_MEM_REG: memory region that is used for
772 * normal registration
773 * @IB_MR_TYPE_SIGNATURE: memory region that is used for
774 * signature operations (data-integrity
776 * @IB_MR_TYPE_SG_GAPS: memory region that is capable to
777 * register any arbitrary sg lists (without
778 * the normal mr constraints - see
783 IB_MR_TYPE_SIGNATURE,
789 * IB_SIG_TYPE_NONE: Unprotected.
790 * IB_SIG_TYPE_T10_DIF: Type T10-DIF
792 enum ib_signature_type {
798 * Signature T10-DIF block-guard types
799 * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules.
800 * IB_T10DIF_CSUM: Corresponds to IP checksum rules.
802 enum ib_t10_dif_bg_type {
808 * struct ib_t10_dif_domain - Parameters specific for T10-DIF
810 * @bg_type: T10-DIF block guard type (CRC|CSUM)
811 * @pi_interval: protection information interval.
812 * @bg: seed of guard computation.
813 * @app_tag: application tag of guard block
814 * @ref_tag: initial guard block reference tag.
815 * @ref_remap: Indicate wethear the reftag increments each block
816 * @app_escape: Indicate to skip block check if apptag=0xffff
817 * @ref_escape: Indicate to skip block check if reftag=0xffffffff
818 * @apptag_check_mask: check bitmask of application tag.
820 struct ib_t10_dif_domain {
821 enum ib_t10_dif_bg_type bg_type;
829 u16 apptag_check_mask;
833 * struct ib_sig_domain - Parameters for signature domain
834 * @sig_type: specific signauture type
835 * @sig: union of all signature domain attributes that may
836 * be used to set domain layout.
838 struct ib_sig_domain {
839 enum ib_signature_type sig_type;
841 struct ib_t10_dif_domain dif;
846 * struct ib_sig_attrs - Parameters for signature handover operation
847 * @check_mask: bitmask for signature byte check (8 bytes)
848 * @mem: memory domain layout desciptor.
849 * @wire: wire domain layout desciptor.
851 struct ib_sig_attrs {
853 struct ib_sig_domain mem;
854 struct ib_sig_domain wire;
857 enum ib_sig_err_type {
864 * struct ib_sig_err - signature error descriptor
867 enum ib_sig_err_type err_type;
874 enum ib_mr_status_check {
875 IB_MR_CHECK_SIG_STATUS = 1,
879 * struct ib_mr_status - Memory region status container
881 * @fail_status: Bitmask of MR checks status. For each
882 * failed check a corresponding status bit is set.
883 * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS
886 struct ib_mr_status {
888 struct ib_sig_err sig_err;
892 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
894 * @mult: multiple to convert.
896 __attribute_const__ enum ib_rate mult_to_ib_rate(int mult);
898 enum rdma_ah_attr_type {
899 RDMA_AH_ATTR_TYPE_UNDEFINED,
900 RDMA_AH_ATTR_TYPE_IB,
901 RDMA_AH_ATTR_TYPE_ROCE,
902 RDMA_AH_ATTR_TYPE_OPA,
910 struct roce_ah_attr {
920 struct rdma_ah_attr {
921 struct ib_global_route grh;
926 enum rdma_ah_attr_type type;
928 struct ib_ah_attr ib;
929 struct roce_ah_attr roce;
930 struct opa_ah_attr opa;
938 IB_WC_LOC_EEC_OP_ERR,
943 IB_WC_LOC_ACCESS_ERR,
944 IB_WC_REM_INV_REQ_ERR,
945 IB_WC_REM_ACCESS_ERR,
948 IB_WC_RNR_RETRY_EXC_ERR,
949 IB_WC_LOC_RDD_VIOL_ERR,
950 IB_WC_REM_INV_RD_REQ_ERR,
953 IB_WC_INV_EEC_STATE_ERR,
955 IB_WC_RESP_TIMEOUT_ERR,
959 const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status);
970 IB_WC_MASKED_COMP_SWAP,
971 IB_WC_MASKED_FETCH_ADD,
973 * Set value of IB_WC_RECV so consumers can test if a completion is a
974 * receive by testing (opcode & IB_WC_RECV).
977 IB_WC_RECV_RDMA_WITH_IMM
982 IB_WC_WITH_IMM = (1<<1),
983 IB_WC_WITH_INVALIDATE = (1<<2),
984 IB_WC_IP_CSUM_OK = (1<<3),
985 IB_WC_WITH_SMAC = (1<<4),
986 IB_WC_WITH_VLAN = (1<<5),
987 IB_WC_WITH_NETWORK_HDR_TYPE = (1<<6),
993 struct ib_cqe *wr_cqe;
995 enum ib_wc_status status;
996 enum ib_wc_opcode opcode;
1002 u32 invalidate_rkey;
1010 u8 port_num; /* valid only for DR SMPs on switches */
1013 u8 network_hdr_type;
1016 enum ib_cq_notify_flags {
1017 IB_CQ_SOLICITED = 1 << 0,
1018 IB_CQ_NEXT_COMP = 1 << 1,
1019 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
1020 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
1029 static inline bool ib_srq_has_cq(enum ib_srq_type srq_type)
1031 return srq_type == IB_SRQT_XRC ||
1032 srq_type == IB_SRQT_TM;
1035 enum ib_srq_attr_mask {
1036 IB_SRQ_MAX_WR = 1 << 0,
1037 IB_SRQ_LIMIT = 1 << 1,
1040 struct ib_srq_attr {
1046 struct ib_srq_init_attr {
1047 void (*event_handler)(struct ib_event *, void *);
1049 struct ib_srq_attr attr;
1050 enum ib_srq_type srq_type;
1056 struct ib_xrcd *xrcd;
1071 u32 max_inline_data;
1074 * Maximum number of rdma_rw_ctx structures in flight at a time.
1075 * ib_create_qp() will calculate the right amount of neededed WRs
1076 * and MRs based on this.
1088 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
1089 * here (and in that order) since the MAD layer uses them as
1090 * indices into a 2-entry table.
1099 IB_QPT_RAW_ETHERTYPE,
1100 IB_QPT_RAW_PACKET = 8,
1104 IB_QPT_DRIVER = 0xFF,
1105 /* Reserve a range for qp types internal to the low level driver.
1106 * These qp types will not be visible at the IB core layer, so the
1107 * IB_QPT_MAX usages should not be affected in the core layer
1109 IB_QPT_RESERVED1 = 0x1000,
1121 enum ib_qp_create_flags {
1122 IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0,
1123 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
1124 IB_QP_CREATE_CROSS_CHANNEL = 1 << 2,
1125 IB_QP_CREATE_MANAGED_SEND = 1 << 3,
1126 IB_QP_CREATE_MANAGED_RECV = 1 << 4,
1127 IB_QP_CREATE_NETIF_QP = 1 << 5,
1128 IB_QP_CREATE_SIGNATURE_EN = 1 << 6,
1129 /* FREE = 1 << 7, */
1130 IB_QP_CREATE_SCATTER_FCS = 1 << 8,
1131 IB_QP_CREATE_CVLAN_STRIPPING = 1 << 9,
1132 IB_QP_CREATE_SOURCE_QPN = 1 << 10,
1133 IB_QP_CREATE_PCI_WRITE_END_PADDING = 1 << 11,
1134 /* reserve bits 26-31 for low level drivers' internal use */
1135 IB_QP_CREATE_RESERVED_START = 1 << 26,
1136 IB_QP_CREATE_RESERVED_END = 1 << 31,
1140 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
1141 * callback to destroy the passed in QP.
1144 struct ib_qp_init_attr {
1145 void (*event_handler)(struct ib_event *, void *);
1147 struct ib_cq *send_cq;
1148 struct ib_cq *recv_cq;
1150 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1151 struct ib_qp_cap cap;
1152 enum ib_sig_type sq_sig_type;
1153 enum ib_qp_type qp_type;
1154 enum ib_qp_create_flags create_flags;
1157 * Only needed for special QP types, or when using the RW API.
1160 struct ib_rwq_ind_table *rwq_ind_tbl;
1164 struct ib_qp_open_attr {
1165 void (*event_handler)(struct ib_event *, void *);
1168 enum ib_qp_type qp_type;
1171 enum ib_rnr_timeout {
1172 IB_RNR_TIMER_655_36 = 0,
1173 IB_RNR_TIMER_000_01 = 1,
1174 IB_RNR_TIMER_000_02 = 2,
1175 IB_RNR_TIMER_000_03 = 3,
1176 IB_RNR_TIMER_000_04 = 4,
1177 IB_RNR_TIMER_000_06 = 5,
1178 IB_RNR_TIMER_000_08 = 6,
1179 IB_RNR_TIMER_000_12 = 7,
1180 IB_RNR_TIMER_000_16 = 8,
1181 IB_RNR_TIMER_000_24 = 9,
1182 IB_RNR_TIMER_000_32 = 10,
1183 IB_RNR_TIMER_000_48 = 11,
1184 IB_RNR_TIMER_000_64 = 12,
1185 IB_RNR_TIMER_000_96 = 13,
1186 IB_RNR_TIMER_001_28 = 14,
1187 IB_RNR_TIMER_001_92 = 15,
1188 IB_RNR_TIMER_002_56 = 16,
1189 IB_RNR_TIMER_003_84 = 17,
1190 IB_RNR_TIMER_005_12 = 18,
1191 IB_RNR_TIMER_007_68 = 19,
1192 IB_RNR_TIMER_010_24 = 20,
1193 IB_RNR_TIMER_015_36 = 21,
1194 IB_RNR_TIMER_020_48 = 22,
1195 IB_RNR_TIMER_030_72 = 23,
1196 IB_RNR_TIMER_040_96 = 24,
1197 IB_RNR_TIMER_061_44 = 25,
1198 IB_RNR_TIMER_081_92 = 26,
1199 IB_RNR_TIMER_122_88 = 27,
1200 IB_RNR_TIMER_163_84 = 28,
1201 IB_RNR_TIMER_245_76 = 29,
1202 IB_RNR_TIMER_327_68 = 30,
1203 IB_RNR_TIMER_491_52 = 31
1206 enum ib_qp_attr_mask {
1208 IB_QP_CUR_STATE = (1<<1),
1209 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
1210 IB_QP_ACCESS_FLAGS = (1<<3),
1211 IB_QP_PKEY_INDEX = (1<<4),
1212 IB_QP_PORT = (1<<5),
1213 IB_QP_QKEY = (1<<6),
1215 IB_QP_PATH_MTU = (1<<8),
1216 IB_QP_TIMEOUT = (1<<9),
1217 IB_QP_RETRY_CNT = (1<<10),
1218 IB_QP_RNR_RETRY = (1<<11),
1219 IB_QP_RQ_PSN = (1<<12),
1220 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
1221 IB_QP_ALT_PATH = (1<<14),
1222 IB_QP_MIN_RNR_TIMER = (1<<15),
1223 IB_QP_SQ_PSN = (1<<16),
1224 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
1225 IB_QP_PATH_MIG_STATE = (1<<18),
1226 IB_QP_CAP = (1<<19),
1227 IB_QP_DEST_QPN = (1<<20),
1228 IB_QP_RESERVED1 = (1<<21),
1229 IB_QP_RESERVED2 = (1<<22),
1230 IB_QP_RESERVED3 = (1<<23),
1231 IB_QP_RESERVED4 = (1<<24),
1232 IB_QP_RATE_LIMIT = (1<<25),
1257 enum ib_qp_state qp_state;
1258 enum ib_qp_state cur_qp_state;
1259 enum ib_mtu path_mtu;
1260 enum ib_mig_state path_mig_state;
1265 int qp_access_flags;
1266 struct ib_qp_cap cap;
1267 struct rdma_ah_attr ah_attr;
1268 struct rdma_ah_attr alt_ah_attr;
1271 u8 en_sqd_async_notify;
1274 u8 max_dest_rd_atomic;
1287 IB_WR_RDMA_WRITE_WITH_IMM,
1289 IB_WR_SEND_WITH_IMM,
1291 IB_WR_ATOMIC_CMP_AND_SWP,
1292 IB_WR_ATOMIC_FETCH_AND_ADD,
1294 IB_WR_SEND_WITH_INV,
1295 IB_WR_RDMA_READ_WITH_INV,
1298 IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
1299 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
1301 /* reserve values for low level drivers' internal use.
1302 * These values will not be used at all in the ib core layer.
1304 IB_WR_RESERVED1 = 0xf0,
1316 enum ib_send_flags {
1318 IB_SEND_SIGNALED = (1<<1),
1319 IB_SEND_SOLICITED = (1<<2),
1320 IB_SEND_INLINE = (1<<3),
1321 IB_SEND_IP_CSUM = (1<<4),
1323 /* reserve bits 26-31 for low level drivers' internal use */
1324 IB_SEND_RESERVED_START = (1 << 26),
1325 IB_SEND_RESERVED_END = (1 << 31),
1335 void (*done)(struct ib_cq *cq, struct ib_wc *wc);
1339 struct ib_send_wr *next;
1342 struct ib_cqe *wr_cqe;
1344 struct ib_sge *sg_list;
1346 enum ib_wr_opcode opcode;
1350 u32 invalidate_rkey;
1355 struct ib_send_wr wr;
1360 static inline struct ib_rdma_wr *rdma_wr(struct ib_send_wr *wr)
1362 return container_of(wr, struct ib_rdma_wr, wr);
1365 struct ib_atomic_wr {
1366 struct ib_send_wr wr;
1370 u64 compare_add_mask;
1375 static inline struct ib_atomic_wr *atomic_wr(struct ib_send_wr *wr)
1377 return container_of(wr, struct ib_atomic_wr, wr);
1381 struct ib_send_wr wr;
1388 u16 pkey_index; /* valid for GSI only */
1389 u8 port_num; /* valid for DR SMPs on switch only */
1392 static inline struct ib_ud_wr *ud_wr(struct ib_send_wr *wr)
1394 return container_of(wr, struct ib_ud_wr, wr);
1398 struct ib_send_wr wr;
1404 static inline struct ib_reg_wr *reg_wr(struct ib_send_wr *wr)
1406 return container_of(wr, struct ib_reg_wr, wr);
1409 struct ib_sig_handover_wr {
1410 struct ib_send_wr wr;
1411 struct ib_sig_attrs *sig_attrs;
1412 struct ib_mr *sig_mr;
1414 struct ib_sge *prot;
1417 static inline struct ib_sig_handover_wr *sig_handover_wr(struct ib_send_wr *wr)
1419 return container_of(wr, struct ib_sig_handover_wr, wr);
1423 struct ib_recv_wr *next;
1426 struct ib_cqe *wr_cqe;
1428 struct ib_sge *sg_list;
1432 enum ib_access_flags {
1433 IB_ACCESS_LOCAL_WRITE = 1,
1434 IB_ACCESS_REMOTE_WRITE = (1<<1),
1435 IB_ACCESS_REMOTE_READ = (1<<2),
1436 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
1437 IB_ACCESS_MW_BIND = (1<<4),
1438 IB_ZERO_BASED = (1<<5),
1439 IB_ACCESS_ON_DEMAND = (1<<6),
1440 IB_ACCESS_HUGETLB = (1<<7),
1444 * XXX: these are apparently used for ->rereg_user_mr, no idea why they
1445 * are hidden here instead of a uapi header!
1447 enum ib_mr_rereg_flags {
1448 IB_MR_REREG_TRANS = 1,
1449 IB_MR_REREG_PD = (1<<1),
1450 IB_MR_REREG_ACCESS = (1<<2),
1451 IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
1454 struct ib_fmr_attr {
1462 enum rdma_remove_reason {
1463 /* Userspace requested uobject deletion. Call could fail */
1464 RDMA_REMOVE_DESTROY,
1465 /* Context deletion. This call should delete the actual object itself */
1467 /* Driver is being hot-unplugged. This call should delete the actual object itself */
1468 RDMA_REMOVE_DRIVER_REMOVE,
1469 /* Context is being cleaned-up, but commit was just completed */
1470 RDMA_REMOVE_DURING_CLEANUP,
1473 struct ib_rdmacg_object {
1474 #ifdef CONFIG_CGROUP_RDMA
1475 struct rdma_cgroup *cg; /* owner rdma cgroup */
1479 struct ib_ucontext {
1480 struct ib_device *device;
1481 struct ib_uverbs_file *ufile;
1484 /* locking the uobjects_list */
1485 struct mutex uobjects_lock;
1486 struct list_head uobjects;
1487 /* protects cleanup process from other actions */
1488 struct rw_semaphore cleanup_rwsem;
1489 enum rdma_remove_reason cleanup_reason;
1492 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1493 struct rb_root_cached umem_tree;
1495 * Protects .umem_rbroot and tree, as well as odp_mrs_count and
1496 * mmu notifiers registration.
1498 struct rw_semaphore umem_rwsem;
1499 void (*invalidate_range)(struct ib_umem *umem,
1500 unsigned long start, unsigned long end);
1502 struct mmu_notifier mn;
1503 atomic_t notifier_count;
1504 /* A list of umems that don't have private mmu notifier counters yet. */
1505 struct list_head no_private_counters;
1509 struct ib_rdmacg_object cg_obj;
1513 u64 user_handle; /* handle given to us by userspace */
1514 struct ib_ucontext *context; /* associated user context */
1515 void *object; /* containing object */
1516 struct list_head list; /* link to context's list */
1517 struct ib_rdmacg_object cg_obj; /* rdmacg object */
1518 int id; /* index into kernel idr */
1520 atomic_t usecnt; /* protects exclusive access */
1521 struct rcu_head rcu; /* kfree_rcu() overhead */
1523 const struct uverbs_obj_type *type;
1526 struct ib_uobject_file {
1527 struct ib_uobject uobj;
1528 /* ufile contains the lock between context release and file close */
1529 struct ib_uverbs_file *ufile;
1533 const void __user *inbuf;
1534 void __user *outbuf;
1542 struct ib_device *device;
1543 struct ib_uobject *uobject;
1544 atomic_t usecnt; /* count all resources */
1546 u32 unsafe_global_rkey;
1549 * Implementation details of the RDMA core, don't use in drivers:
1551 struct ib_mr *__internal_mr;
1552 struct rdma_restrack_entry res;
1556 struct ib_device *device;
1557 atomic_t usecnt; /* count all exposed resources */
1558 struct inode *inode;
1560 struct mutex tgt_qp_mutex;
1561 struct list_head tgt_qp_list;
1565 struct ib_device *device;
1567 struct ib_uobject *uobject;
1568 enum rdma_ah_attr_type type;
1571 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
1573 enum ib_poll_context {
1574 IB_POLL_DIRECT, /* caller context, no hw completions */
1575 IB_POLL_SOFTIRQ, /* poll from softirq context */
1576 IB_POLL_WORKQUEUE, /* poll from workqueue */
1580 struct ib_device *device;
1581 struct ib_uobject *uobject;
1582 ib_comp_handler comp_handler;
1583 void (*event_handler)(struct ib_event *, void *);
1586 atomic_t usecnt; /* count number of work queues */
1587 enum ib_poll_context poll_ctx;
1590 struct irq_poll iop;
1591 struct work_struct work;
1594 * Implementation details of the RDMA core, don't use in drivers:
1596 struct rdma_restrack_entry res;
1600 struct ib_device *device;
1602 struct ib_uobject *uobject;
1603 void (*event_handler)(struct ib_event *, void *);
1605 enum ib_srq_type srq_type;
1612 struct ib_xrcd *xrcd;
1619 enum ib_raw_packet_caps {
1620 /* Strip cvlan from incoming packet and report it in the matching work
1621 * completion is supported.
1623 IB_RAW_PACKET_CAP_CVLAN_STRIPPING = (1 << 0),
1624 /* Scatter FCS field of an incoming packet to host memory is supported.
1626 IB_RAW_PACKET_CAP_SCATTER_FCS = (1 << 1),
1627 /* Checksum offloads are supported (for both send and receive). */
1628 IB_RAW_PACKET_CAP_IP_CSUM = (1 << 2),
1629 /* When a packet is received for an RQ with no receive WQEs, the
1630 * packet processing is delayed.
1632 IB_RAW_PACKET_CAP_DELAY_DROP = (1 << 3),
1646 struct ib_device *device;
1647 struct ib_uobject *uobject;
1649 void (*event_handler)(struct ib_event *, void *);
1653 enum ib_wq_state state;
1654 enum ib_wq_type wq_type;
1659 IB_WQ_FLAGS_CVLAN_STRIPPING = 1 << 0,
1660 IB_WQ_FLAGS_SCATTER_FCS = 1 << 1,
1661 IB_WQ_FLAGS_DELAY_DROP = 1 << 2,
1662 IB_WQ_FLAGS_PCI_WRITE_END_PADDING = 1 << 3,
1665 struct ib_wq_init_attr {
1667 enum ib_wq_type wq_type;
1671 void (*event_handler)(struct ib_event *, void *);
1672 u32 create_flags; /* Use enum ib_wq_flags */
1675 enum ib_wq_attr_mask {
1676 IB_WQ_STATE = 1 << 0,
1677 IB_WQ_CUR_STATE = 1 << 1,
1678 IB_WQ_FLAGS = 1 << 2,
1682 enum ib_wq_state wq_state;
1683 enum ib_wq_state curr_wq_state;
1684 u32 flags; /* Use enum ib_wq_flags */
1685 u32 flags_mask; /* Use enum ib_wq_flags */
1688 struct ib_rwq_ind_table {
1689 struct ib_device *device;
1690 struct ib_uobject *uobject;
1693 u32 log_ind_tbl_size;
1694 struct ib_wq **ind_tbl;
1697 struct ib_rwq_ind_table_init_attr {
1698 u32 log_ind_tbl_size;
1699 /* Each entry is a pointer to Receive Work Queue */
1700 struct ib_wq **ind_tbl;
1703 enum port_pkey_state {
1704 IB_PORT_PKEY_NOT_VALID = 0,
1705 IB_PORT_PKEY_VALID = 1,
1706 IB_PORT_PKEY_LISTED = 2,
1709 struct ib_qp_security;
1711 struct ib_port_pkey {
1712 enum port_pkey_state state;
1715 struct list_head qp_list;
1716 struct list_head to_error_list;
1717 struct ib_qp_security *sec;
1720 struct ib_ports_pkeys {
1721 struct ib_port_pkey main;
1722 struct ib_port_pkey alt;
1725 struct ib_qp_security {
1727 struct ib_device *dev;
1728 /* Hold this mutex when changing port and pkey settings. */
1730 struct ib_ports_pkeys *ports_pkeys;
1731 /* A list of all open shared QP handles. Required to enforce security
1732 * properly for all users of a shared QP.
1734 struct list_head shared_qp_list;
1737 atomic_t error_list_count;
1738 struct completion error_complete;
1739 int error_comps_pending;
1743 * @max_write_sge: Maximum SGE elements per RDMA WRITE request.
1744 * @max_read_sge: Maximum SGE elements per RDMA READ request.
1747 struct ib_device *device;
1749 struct ib_cq *send_cq;
1750 struct ib_cq *recv_cq;
1753 struct list_head rdma_mrs;
1754 struct list_head sig_mrs;
1756 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1757 struct list_head xrcd_list;
1759 /* count times opened, mcast attaches, flow attaches */
1761 struct list_head open_list;
1762 struct ib_qp *real_qp;
1763 struct ib_uobject *uobject;
1764 void (*event_handler)(struct ib_event *, void *);
1769 enum ib_qp_type qp_type;
1770 struct ib_rwq_ind_table *rwq_ind_tbl;
1771 struct ib_qp_security *qp_sec;
1775 * Implementation details of the RDMA core, don't use in drivers:
1777 struct rdma_restrack_entry res;
1781 struct ib_device *device;
1784 struct ib_uobject *uobject;
1789 struct ib_device *device;
1795 unsigned int page_size;
1798 struct ib_uobject *uobject; /* user */
1799 struct list_head qp_entry; /* FR */
1805 * Implementation details of the RDMA core, don't use in drivers:
1807 struct rdma_restrack_entry res;
1811 struct ib_device *device;
1813 struct ib_uobject *uobject;
1815 enum ib_mw_type type;
1819 struct ib_device *device;
1821 struct list_head list;
1826 /* Supported steering options */
1827 enum ib_flow_attr_type {
1828 /* steering according to rule specifications */
1829 IB_FLOW_ATTR_NORMAL = 0x0,
1830 /* default unicast and multicast rule -
1831 * receive all Eth traffic which isn't steered to any QP
1833 IB_FLOW_ATTR_ALL_DEFAULT = 0x1,
1834 /* default multicast rule -
1835 * receive all Eth multicast traffic which isn't steered to any QP
1837 IB_FLOW_ATTR_MC_DEFAULT = 0x2,
1838 /* sniffer rule - receive all port traffic */
1839 IB_FLOW_ATTR_SNIFFER = 0x3
1842 /* Supported steering header types */
1843 enum ib_flow_spec_type {
1845 IB_FLOW_SPEC_ETH = 0x20,
1846 IB_FLOW_SPEC_IB = 0x22,
1848 IB_FLOW_SPEC_IPV4 = 0x30,
1849 IB_FLOW_SPEC_IPV6 = 0x31,
1850 IB_FLOW_SPEC_ESP = 0x34,
1852 IB_FLOW_SPEC_TCP = 0x40,
1853 IB_FLOW_SPEC_UDP = 0x41,
1854 IB_FLOW_SPEC_VXLAN_TUNNEL = 0x50,
1855 IB_FLOW_SPEC_INNER = 0x100,
1857 IB_FLOW_SPEC_ACTION_TAG = 0x1000,
1858 IB_FLOW_SPEC_ACTION_DROP = 0x1001,
1859 IB_FLOW_SPEC_ACTION_HANDLE = 0x1002,
1861 #define IB_FLOW_SPEC_LAYER_MASK 0xF0
1862 #define IB_FLOW_SPEC_SUPPORT_LAYERS 8
1864 /* Flow steering rule priority is set according to it's domain.
1865 * Lower domain value means higher priority.
1867 enum ib_flow_domain {
1868 IB_FLOW_DOMAIN_USER,
1869 IB_FLOW_DOMAIN_ETHTOOL,
1872 IB_FLOW_DOMAIN_NUM /* Must be last */
1875 enum ib_flow_flags {
1876 IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */
1877 IB_FLOW_ATTR_FLAGS_EGRESS = 1UL << 2, /* Egress flow */
1878 IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 3 /* Must be last */
1881 struct ib_flow_eth_filter {
1890 struct ib_flow_spec_eth {
1893 struct ib_flow_eth_filter val;
1894 struct ib_flow_eth_filter mask;
1897 struct ib_flow_ib_filter {
1904 struct ib_flow_spec_ib {
1907 struct ib_flow_ib_filter val;
1908 struct ib_flow_ib_filter mask;
1911 /* IPv4 header flags */
1912 enum ib_ipv4_flags {
1913 IB_IPV4_DONT_FRAG = 0x2, /* Don't enable packet fragmentation */
1914 IB_IPV4_MORE_FRAG = 0X4 /* For All fragmented packets except the
1915 last have this flag set */
1918 struct ib_flow_ipv4_filter {
1929 struct ib_flow_spec_ipv4 {
1932 struct ib_flow_ipv4_filter val;
1933 struct ib_flow_ipv4_filter mask;
1936 struct ib_flow_ipv6_filter {
1947 struct ib_flow_spec_ipv6 {
1950 struct ib_flow_ipv6_filter val;
1951 struct ib_flow_ipv6_filter mask;
1954 struct ib_flow_tcp_udp_filter {
1961 struct ib_flow_spec_tcp_udp {
1964 struct ib_flow_tcp_udp_filter val;
1965 struct ib_flow_tcp_udp_filter mask;
1968 struct ib_flow_tunnel_filter {
1973 /* ib_flow_spec_tunnel describes the Vxlan tunnel
1974 * the tunnel_id from val has the vni value
1976 struct ib_flow_spec_tunnel {
1979 struct ib_flow_tunnel_filter val;
1980 struct ib_flow_tunnel_filter mask;
1983 struct ib_flow_esp_filter {
1990 struct ib_flow_spec_esp {
1993 struct ib_flow_esp_filter val;
1994 struct ib_flow_esp_filter mask;
1997 struct ib_flow_spec_action_tag {
1998 enum ib_flow_spec_type type;
2003 struct ib_flow_spec_action_drop {
2004 enum ib_flow_spec_type type;
2008 struct ib_flow_spec_action_handle {
2009 enum ib_flow_spec_type type;
2011 struct ib_flow_action *act;
2014 union ib_flow_spec {
2019 struct ib_flow_spec_eth eth;
2020 struct ib_flow_spec_ib ib;
2021 struct ib_flow_spec_ipv4 ipv4;
2022 struct ib_flow_spec_tcp_udp tcp_udp;
2023 struct ib_flow_spec_ipv6 ipv6;
2024 struct ib_flow_spec_tunnel tunnel;
2025 struct ib_flow_spec_esp esp;
2026 struct ib_flow_spec_action_tag flow_tag;
2027 struct ib_flow_spec_action_drop drop;
2028 struct ib_flow_spec_action_handle action;
2031 struct ib_flow_attr {
2032 enum ib_flow_attr_type type;
2038 /* Following are the optional layers according to user request
2039 * struct ib_flow_spec_xxx
2040 * struct ib_flow_spec_yyy
2046 struct ib_uobject *uobject;
2049 enum ib_flow_action_type {
2050 IB_FLOW_ACTION_UNSPECIFIED,
2051 IB_FLOW_ACTION_ESP = 1,
2054 struct ib_flow_action_attrs_esp_keymats {
2055 enum ib_uverbs_flow_action_esp_keymat protocol;
2057 struct ib_uverbs_flow_action_esp_keymat_aes_gcm aes_gcm;
2061 struct ib_flow_action_attrs_esp_replays {
2062 enum ib_uverbs_flow_action_esp_replay protocol;
2064 struct ib_uverbs_flow_action_esp_replay_bmp bmp;
2068 enum ib_flow_action_attrs_esp_flags {
2069 /* All user-space flags at the top: Use enum ib_uverbs_flow_action_esp_flags
2070 * This is done in order to share the same flags between user-space and
2071 * kernel and spare an unnecessary translation.
2075 IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED = 1ULL << 32,
2076 IB_FLOW_ACTION_ESP_FLAGS_MOD_ESP_ATTRS = 1ULL << 33,
2079 struct ib_flow_spec_list {
2080 struct ib_flow_spec_list *next;
2081 union ib_flow_spec spec;
2084 struct ib_flow_action_attrs_esp {
2085 struct ib_flow_action_attrs_esp_keymats *keymat;
2086 struct ib_flow_action_attrs_esp_replays *replay;
2087 struct ib_flow_spec_list *encap;
2088 /* Used only if IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED is enabled.
2089 * Value of 0 is a valid value.
2095 /* Use enum ib_flow_action_attrs_esp_flags */
2097 u64 hard_limit_pkts;
2100 struct ib_flow_action {
2101 struct ib_device *device;
2102 struct ib_uobject *uobject;
2103 enum ib_flow_action_type type;
2110 enum ib_process_mad_flags {
2111 IB_MAD_IGNORE_MKEY = 1,
2112 IB_MAD_IGNORE_BKEY = 2,
2113 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
2116 enum ib_mad_result {
2117 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
2118 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
2119 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
2120 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
2123 struct ib_port_cache {
2125 struct ib_pkey_cache *pkey;
2126 struct ib_gid_table *gid;
2128 enum ib_port_state port_state;
2133 struct ib_event_handler event_handler;
2134 struct ib_port_cache *ports;
2139 struct ib_port_immutable {
2146 /* rdma netdev type - specifies protocol type */
2147 enum rdma_netdev_t {
2148 RDMA_NETDEV_OPA_VNIC,
2153 * struct rdma_netdev - rdma netdev
2154 * For cases where netstack interfacing is required.
2156 struct rdma_netdev {
2158 struct ib_device *hca;
2161 /* cleanup function must be specified */
2162 void (*free_rdma_netdev)(struct net_device *netdev);
2164 /* control functions */
2165 void (*set_id)(struct net_device *netdev, int id);
2167 int (*send)(struct net_device *dev, struct sk_buff *skb,
2168 struct ib_ah *address, u32 dqpn);
2170 int (*attach_mcast)(struct net_device *dev, struct ib_device *hca,
2171 union ib_gid *gid, u16 mlid,
2172 int set_qkey, u32 qkey);
2173 int (*detach_mcast)(struct net_device *dev, struct ib_device *hca,
2174 union ib_gid *gid, u16 mlid);
2177 struct ib_port_pkey_list {
2178 /* Lock to hold while modifying the list. */
2179 spinlock_t list_lock;
2180 struct list_head pkey_list;
2183 struct uverbs_attr_bundle;
2186 /* Do not access @dma_device directly from ULP nor from HW drivers. */
2187 struct device *dma_device;
2189 char name[IB_DEVICE_NAME_MAX];
2191 struct list_head event_handler_list;
2192 spinlock_t event_handler_lock;
2194 spinlock_t client_data_lock;
2195 struct list_head core_list;
2196 /* Access to the client_data_list is protected by the client_data_lock
2197 * spinlock and the lists_rwsem read-write semaphore */
2198 struct list_head client_data_list;
2200 struct ib_cache cache;
2202 * port_immutable is indexed by port number
2204 struct ib_port_immutable *port_immutable;
2206 int num_comp_vectors;
2208 struct ib_port_pkey_list *port_pkey_list;
2210 struct iw_cm_verbs *iwcm;
2213 * alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the
2214 * driver initialized data. The struct is kfree()'ed by the sysfs
2215 * core when the device is removed. A lifespan of -1 in the return
2216 * struct tells the core to set a default lifespan.
2218 struct rdma_hw_stats *(*alloc_hw_stats)(struct ib_device *device,
2221 * get_hw_stats - Fill in the counter value(s) in the stats struct.
2222 * @index - The index in the value array we wish to have updated, or
2223 * num_counters if we want all stats updated
2225 * < 0 - Error, no counters updated
2226 * index - Updated the single counter pointed to by index
2227 * num_counters - Updated all counters (will reset the timestamp
2228 * and prevent further calls for lifespan milliseconds)
2229 * Drivers are allowed to update all counters in leiu of just the
2230 * one given in index at their option
2232 int (*get_hw_stats)(struct ib_device *device,
2233 struct rdma_hw_stats *stats,
2234 u8 port, int index);
2235 int (*query_device)(struct ib_device *device,
2236 struct ib_device_attr *device_attr,
2237 struct ib_udata *udata);
2238 int (*query_port)(struct ib_device *device,
2240 struct ib_port_attr *port_attr);
2241 enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
2243 /* When calling get_netdev, the HW vendor's driver should return the
2244 * net device of device @device at port @port_num or NULL if such
2245 * a net device doesn't exist. The vendor driver should call dev_hold
2246 * on this net device. The HW vendor's device driver must guarantee
2247 * that this function returns NULL before the net device has finished
2248 * NETDEV_UNREGISTER state.
2250 struct net_device *(*get_netdev)(struct ib_device *device,
2252 /* query_gid should be return GID value for @device, when @port_num
2253 * link layer is either IB or iWarp. It is no-op if @port_num port
2254 * is RoCE link layer.
2256 int (*query_gid)(struct ib_device *device,
2257 u8 port_num, int index,
2259 /* When calling add_gid, the HW vendor's driver should add the gid
2260 * of device of port at gid index available at @attr. Meta-info of
2261 * that gid (for example, the network device related to this gid) is
2262 * available at @attr. @context allows the HW vendor driver to store
2263 * extra information together with a GID entry. The HW vendor driver may
2264 * allocate memory to contain this information and store it in @context
2265 * when a new GID entry is written to. Params are consistent until the
2266 * next call of add_gid or delete_gid. The function should return 0 on
2267 * success or error otherwise. The function could be called
2268 * concurrently for different ports. This function is only called when
2269 * roce_gid_table is used.
2271 int (*add_gid)(const union ib_gid *gid,
2272 const struct ib_gid_attr *attr,
2274 /* When calling del_gid, the HW vendor's driver should delete the
2275 * gid of device @device at gid index gid_index of port port_num
2276 * available in @attr.
2277 * Upon the deletion of a GID entry, the HW vendor must free any
2278 * allocated memory. The caller will clear @context afterwards.
2279 * This function is only called when roce_gid_table is used.
2281 int (*del_gid)(const struct ib_gid_attr *attr,
2283 int (*query_pkey)(struct ib_device *device,
2284 u8 port_num, u16 index, u16 *pkey);
2285 int (*modify_device)(struct ib_device *device,
2286 int device_modify_mask,
2287 struct ib_device_modify *device_modify);
2288 int (*modify_port)(struct ib_device *device,
2289 u8 port_num, int port_modify_mask,
2290 struct ib_port_modify *port_modify);
2291 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
2292 struct ib_udata *udata);
2293 int (*dealloc_ucontext)(struct ib_ucontext *context);
2294 int (*mmap)(struct ib_ucontext *context,
2295 struct vm_area_struct *vma);
2296 struct ib_pd * (*alloc_pd)(struct ib_device *device,
2297 struct ib_ucontext *context,
2298 struct ib_udata *udata);
2299 int (*dealloc_pd)(struct ib_pd *pd);
2300 struct ib_ah * (*create_ah)(struct ib_pd *pd,
2301 struct rdma_ah_attr *ah_attr,
2302 struct ib_udata *udata);
2303 int (*modify_ah)(struct ib_ah *ah,
2304 struct rdma_ah_attr *ah_attr);
2305 int (*query_ah)(struct ib_ah *ah,
2306 struct rdma_ah_attr *ah_attr);
2307 int (*destroy_ah)(struct ib_ah *ah);
2308 struct ib_srq * (*create_srq)(struct ib_pd *pd,
2309 struct ib_srq_init_attr *srq_init_attr,
2310 struct ib_udata *udata);
2311 int (*modify_srq)(struct ib_srq *srq,
2312 struct ib_srq_attr *srq_attr,
2313 enum ib_srq_attr_mask srq_attr_mask,
2314 struct ib_udata *udata);
2315 int (*query_srq)(struct ib_srq *srq,
2316 struct ib_srq_attr *srq_attr);
2317 int (*destroy_srq)(struct ib_srq *srq);
2318 int (*post_srq_recv)(struct ib_srq *srq,
2319 struct ib_recv_wr *recv_wr,
2320 struct ib_recv_wr **bad_recv_wr);
2321 struct ib_qp * (*create_qp)(struct ib_pd *pd,
2322 struct ib_qp_init_attr *qp_init_attr,
2323 struct ib_udata *udata);
2324 int (*modify_qp)(struct ib_qp *qp,
2325 struct ib_qp_attr *qp_attr,
2327 struct ib_udata *udata);
2328 int (*query_qp)(struct ib_qp *qp,
2329 struct ib_qp_attr *qp_attr,
2331 struct ib_qp_init_attr *qp_init_attr);
2332 int (*destroy_qp)(struct ib_qp *qp);
2333 int (*post_send)(struct ib_qp *qp,
2334 struct ib_send_wr *send_wr,
2335 struct ib_send_wr **bad_send_wr);
2336 int (*post_recv)(struct ib_qp *qp,
2337 struct ib_recv_wr *recv_wr,
2338 struct ib_recv_wr **bad_recv_wr);
2339 struct ib_cq * (*create_cq)(struct ib_device *device,
2340 const struct ib_cq_init_attr *attr,
2341 struct ib_ucontext *context,
2342 struct ib_udata *udata);
2343 int (*modify_cq)(struct ib_cq *cq, u16 cq_count,
2345 int (*destroy_cq)(struct ib_cq *cq);
2346 int (*resize_cq)(struct ib_cq *cq, int cqe,
2347 struct ib_udata *udata);
2348 int (*poll_cq)(struct ib_cq *cq, int num_entries,
2350 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
2351 int (*req_notify_cq)(struct ib_cq *cq,
2352 enum ib_cq_notify_flags flags);
2353 int (*req_ncomp_notif)(struct ib_cq *cq,
2355 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
2356 int mr_access_flags);
2357 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
2358 u64 start, u64 length,
2360 int mr_access_flags,
2361 struct ib_udata *udata);
2362 int (*rereg_user_mr)(struct ib_mr *mr,
2364 u64 start, u64 length,
2366 int mr_access_flags,
2368 struct ib_udata *udata);
2369 int (*dereg_mr)(struct ib_mr *mr);
2370 struct ib_mr * (*alloc_mr)(struct ib_pd *pd,
2371 enum ib_mr_type mr_type,
2373 int (*map_mr_sg)(struct ib_mr *mr,
2374 struct scatterlist *sg,
2376 unsigned int *sg_offset);
2377 struct ib_mw * (*alloc_mw)(struct ib_pd *pd,
2378 enum ib_mw_type type,
2379 struct ib_udata *udata);
2380 int (*dealloc_mw)(struct ib_mw *mw);
2381 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
2382 int mr_access_flags,
2383 struct ib_fmr_attr *fmr_attr);
2384 int (*map_phys_fmr)(struct ib_fmr *fmr,
2385 u64 *page_list, int list_len,
2387 int (*unmap_fmr)(struct list_head *fmr_list);
2388 int (*dealloc_fmr)(struct ib_fmr *fmr);
2389 int (*attach_mcast)(struct ib_qp *qp,
2392 int (*detach_mcast)(struct ib_qp *qp,
2395 int (*process_mad)(struct ib_device *device,
2396 int process_mad_flags,
2398 const struct ib_wc *in_wc,
2399 const struct ib_grh *in_grh,
2400 const struct ib_mad_hdr *in_mad,
2402 struct ib_mad_hdr *out_mad,
2403 size_t *out_mad_size,
2404 u16 *out_mad_pkey_index);
2405 struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device,
2406 struct ib_ucontext *ucontext,
2407 struct ib_udata *udata);
2408 int (*dealloc_xrcd)(struct ib_xrcd *xrcd);
2409 struct ib_flow * (*create_flow)(struct ib_qp *qp,
2413 int (*destroy_flow)(struct ib_flow *flow_id);
2414 int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
2415 struct ib_mr_status *mr_status);
2416 void (*disassociate_ucontext)(struct ib_ucontext *ibcontext);
2417 void (*drain_rq)(struct ib_qp *qp);
2418 void (*drain_sq)(struct ib_qp *qp);
2419 int (*set_vf_link_state)(struct ib_device *device, int vf, u8 port,
2421 int (*get_vf_config)(struct ib_device *device, int vf, u8 port,
2422 struct ifla_vf_info *ivf);
2423 int (*get_vf_stats)(struct ib_device *device, int vf, u8 port,
2424 struct ifla_vf_stats *stats);
2425 int (*set_vf_guid)(struct ib_device *device, int vf, u8 port, u64 guid,
2427 struct ib_wq * (*create_wq)(struct ib_pd *pd,
2428 struct ib_wq_init_attr *init_attr,
2429 struct ib_udata *udata);
2430 int (*destroy_wq)(struct ib_wq *wq);
2431 int (*modify_wq)(struct ib_wq *wq,
2432 struct ib_wq_attr *attr,
2434 struct ib_udata *udata);
2435 struct ib_rwq_ind_table * (*create_rwq_ind_table)(struct ib_device *device,
2436 struct ib_rwq_ind_table_init_attr *init_attr,
2437 struct ib_udata *udata);
2438 int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table);
2439 struct ib_flow_action * (*create_flow_action_esp)(struct ib_device *device,
2440 const struct ib_flow_action_attrs_esp *attr,
2441 struct uverbs_attr_bundle *attrs);
2442 int (*destroy_flow_action)(struct ib_flow_action *action);
2443 int (*modify_flow_action_esp)(struct ib_flow_action *action,
2444 const struct ib_flow_action_attrs_esp *attr,
2445 struct uverbs_attr_bundle *attrs);
2446 struct ib_dm * (*alloc_dm)(struct ib_device *device,
2447 struct ib_ucontext *context,
2448 struct ib_dm_alloc_attr *attr,
2449 struct uverbs_attr_bundle *attrs);
2450 int (*dealloc_dm)(struct ib_dm *dm);
2451 struct ib_mr * (*reg_dm_mr)(struct ib_pd *pd, struct ib_dm *dm,
2452 struct ib_dm_mr_attr *attr,
2453 struct uverbs_attr_bundle *attrs);
2455 * rdma netdev operation
2457 * Driver implementing alloc_rdma_netdev must return -EOPNOTSUPP if it
2458 * doesn't support the specified rdma netdev type.
2460 struct net_device *(*alloc_rdma_netdev)(
2461 struct ib_device *device,
2463 enum rdma_netdev_t type,
2465 unsigned char name_assign_type,
2466 void (*setup)(struct net_device *));
2468 struct module *owner;
2470 struct kobject *ports_parent;
2471 struct list_head port_list;
2474 IB_DEV_UNINITIALIZED,
2480 u64 uverbs_cmd_mask;
2481 u64 uverbs_ex_cmd_mask;
2483 char node_desc[IB_DEVICE_NODE_DESC_MAX];
2489 struct ib_device_attr attrs;
2490 struct attribute_group *hw_stats_ag;
2491 struct rdma_hw_stats *hw_stats;
2493 #ifdef CONFIG_CGROUP_RDMA
2494 struct rdmacg_device cg_device;
2499 * Implementation details of the RDMA core, don't use in drivers
2501 struct rdma_restrack_root res;
2504 * The following mandatory functions are used only at device
2505 * registration. Keep functions such as these at the end of this
2506 * structure to avoid cache line misses when accessing struct ib_device
2509 int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *);
2510 void (*get_dev_fw_str)(struct ib_device *, char *str);
2511 const struct cpumask *(*get_vector_affinity)(struct ib_device *ibdev,
2514 struct uverbs_root_spec *specs_root;
2515 enum rdma_driver_id driver_id;
2520 void (*add) (struct ib_device *);
2521 void (*remove)(struct ib_device *, void *client_data);
2523 /* Returns the net_dev belonging to this ib_client and matching the
2525 * @dev: An RDMA device that the net_dev use for communication.
2526 * @port: A physical port number on the RDMA device.
2527 * @pkey: P_Key that the net_dev uses if applicable.
2528 * @gid: A GID that the net_dev uses to communicate.
2529 * @addr: An IP address the net_dev is configured with.
2530 * @client_data: The device's client data set by ib_set_client_data().
2532 * An ib_client that implements a net_dev on top of RDMA devices
2533 * (such as IP over IB) should implement this callback, allowing the
2534 * rdma_cm module to find the right net_dev for a given request.
2536 * The caller is responsible for calling dev_put on the returned
2538 struct net_device *(*get_net_dev_by_params)(
2539 struct ib_device *dev,
2542 const union ib_gid *gid,
2543 const struct sockaddr *addr,
2545 struct list_head list;
2548 struct ib_device *ib_alloc_device(size_t size);
2549 void ib_dealloc_device(struct ib_device *device);
2551 void ib_get_device_fw_str(struct ib_device *device, char *str);
2553 int ib_register_device(struct ib_device *device,
2554 int (*port_callback)(struct ib_device *,
2555 u8, struct kobject *));
2556 void ib_unregister_device(struct ib_device *device);
2558 int ib_register_client (struct ib_client *client);
2559 void ib_unregister_client(struct ib_client *client);
2561 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
2562 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
2565 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
2567 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
2570 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
2572 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
2575 static inline bool ib_is_buffer_cleared(const void __user *p,
2581 if (len > USHRT_MAX)
2584 buf = memdup_user(p, len);
2588 ret = !memchr_inv(buf, 0, len);
2593 static inline bool ib_is_udata_cleared(struct ib_udata *udata,
2597 return ib_is_buffer_cleared(udata->inbuf + offset, len);
2601 * ib_modify_qp_is_ok - Check that the supplied attribute mask
2602 * contains all required attributes and no attributes not allowed for
2603 * the given QP state transition.
2604 * @cur_state: Current QP state
2605 * @next_state: Next QP state
2607 * @mask: Mask of supplied QP attributes
2608 * @ll : link layer of port
2610 * This function is a helper function that a low-level driver's
2611 * modify_qp method can use to validate the consumer's input. It
2612 * checks that cur_state and next_state are valid QP states, that a
2613 * transition from cur_state to next_state is allowed by the IB spec,
2614 * and that the attribute mask supplied is allowed for the transition.
2616 bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
2617 enum ib_qp_type type, enum ib_qp_attr_mask mask,
2618 enum rdma_link_layer ll);
2620 void ib_register_event_handler(struct ib_event_handler *event_handler);
2621 void ib_unregister_event_handler(struct ib_event_handler *event_handler);
2622 void ib_dispatch_event(struct ib_event *event);
2624 int ib_query_port(struct ib_device *device,
2625 u8 port_num, struct ib_port_attr *port_attr);
2627 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
2631 * rdma_cap_ib_switch - Check if the device is IB switch
2632 * @device: Device to check
2634 * Device driver is responsible for setting is_switch bit on
2635 * in ib_device structure at init time.
2637 * Return: true if the device is IB switch.
2639 static inline bool rdma_cap_ib_switch(const struct ib_device *device)
2641 return device->is_switch;
2645 * rdma_start_port - Return the first valid port number for the device
2648 * @device: Device to be checked
2650 * Return start port number
2652 static inline u8 rdma_start_port(const struct ib_device *device)
2654 return rdma_cap_ib_switch(device) ? 0 : 1;
2658 * rdma_end_port - Return the last valid port number for the device
2661 * @device: Device to be checked
2663 * Return last port number
2665 static inline u8 rdma_end_port(const struct ib_device *device)
2667 return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt;
2670 static inline int rdma_is_port_valid(const struct ib_device *device,
2673 return (port >= rdma_start_port(device) &&
2674 port <= rdma_end_port(device));
2677 static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num)
2679 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB;
2682 static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num)
2684 return device->port_immutable[port_num].core_cap_flags &
2685 (RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP);
2688 static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, u8 port_num)
2690 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
2693 static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, u8 port_num)
2695 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE;
2698 static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num)
2700 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP;
2703 static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num)
2705 return rdma_protocol_ib(device, port_num) ||
2706 rdma_protocol_roce(device, port_num);
2709 static inline bool rdma_protocol_raw_packet(const struct ib_device *device, u8 port_num)
2711 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_RAW_PACKET;
2714 static inline bool rdma_protocol_usnic(const struct ib_device *device, u8 port_num)
2716 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_USNIC;
2720 * rdma_cap_ib_mad - Check if the port of a device supports Infiniband
2721 * Management Datagrams.
2722 * @device: Device to check
2723 * @port_num: Port number to check
2725 * Management Datagrams (MAD) are a required part of the InfiniBand
2726 * specification and are supported on all InfiniBand devices. A slightly
2727 * extended version are also supported on OPA interfaces.
2729 * Return: true if the port supports sending/receiving of MAD packets.
2731 static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num)
2733 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_MAD;
2737 * rdma_cap_opa_mad - Check if the port of device provides support for OPA
2738 * Management Datagrams.
2739 * @device: Device to check
2740 * @port_num: Port number to check
2742 * Intel OmniPath devices extend and/or replace the InfiniBand Management
2743 * datagrams with their own versions. These OPA MADs share many but not all of
2744 * the characteristics of InfiniBand MADs.
2746 * OPA MADs differ in the following ways:
2748 * 1) MADs are variable size up to 2K
2749 * IBTA defined MADs remain fixed at 256 bytes
2750 * 2) OPA SMPs must carry valid PKeys
2751 * 3) OPA SMP packets are a different format
2753 * Return: true if the port supports OPA MAD packet formats.
2755 static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num)
2757 return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD)
2758 == RDMA_CORE_CAP_OPA_MAD;
2762 * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband
2763 * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI).
2764 * @device: Device to check
2765 * @port_num: Port number to check
2767 * Each InfiniBand node is required to provide a Subnet Management Agent
2768 * that the subnet manager can access. Prior to the fabric being fully
2769 * configured by the subnet manager, the SMA is accessed via a well known
2770 * interface called the Subnet Management Interface (SMI). This interface
2771 * uses directed route packets to communicate with the SM to get around the
2772 * chicken and egg problem of the SM needing to know what's on the fabric
2773 * in order to configure the fabric, and needing to configure the fabric in
2774 * order to send packets to the devices on the fabric. These directed
2775 * route packets do not need the fabric fully configured in order to reach
2776 * their destination. The SMI is the only method allowed to send
2777 * directed route packets on an InfiniBand fabric.
2779 * Return: true if the port provides an SMI.
2781 static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num)
2783 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SMI;
2787 * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband
2788 * Communication Manager.
2789 * @device: Device to check
2790 * @port_num: Port number to check
2792 * The InfiniBand Communication Manager is one of many pre-defined General
2793 * Service Agents (GSA) that are accessed via the General Service
2794 * Interface (GSI). It's role is to facilitate establishment of connections
2795 * between nodes as well as other management related tasks for established
2798 * Return: true if the port supports an IB CM (this does not guarantee that
2799 * a CM is actually running however).
2801 static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num)
2803 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_CM;
2807 * rdma_cap_iw_cm - Check if the port of device has the capability IWARP
2808 * Communication Manager.
2809 * @device: Device to check
2810 * @port_num: Port number to check
2812 * Similar to above, but specific to iWARP connections which have a different
2813 * managment protocol than InfiniBand.
2815 * Return: true if the port supports an iWARP CM (this does not guarantee that
2816 * a CM is actually running however).
2818 static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num)
2820 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IW_CM;
2824 * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband
2825 * Subnet Administration.
2826 * @device: Device to check
2827 * @port_num: Port number to check
2829 * An InfiniBand Subnet Administration (SA) service is a pre-defined General
2830 * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand
2831 * fabrics, devices should resolve routes to other hosts by contacting the
2832 * SA to query the proper route.
2834 * Return: true if the port should act as a client to the fabric Subnet
2835 * Administration interface. This does not imply that the SA service is
2838 static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num)
2840 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SA;
2844 * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband
2846 * @device: Device to check
2847 * @port_num: Port number to check
2849 * InfiniBand multicast registration is more complex than normal IPv4 or
2850 * IPv6 multicast registration. Each Host Channel Adapter must register
2851 * with the Subnet Manager when it wishes to join a multicast group. It
2852 * should do so only once regardless of how many queue pairs it subscribes
2853 * to this group. And it should leave the group only after all queue pairs
2854 * attached to the group have been detached.
2856 * Return: true if the port must undertake the additional adminstrative
2857 * overhead of registering/unregistering with the SM and tracking of the
2858 * total number of queue pairs attached to the multicast group.
2860 static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num)
2862 return rdma_cap_ib_sa(device, port_num);
2866 * rdma_cap_af_ib - Check if the port of device has the capability
2867 * Native Infiniband Address.
2868 * @device: Device to check
2869 * @port_num: Port number to check
2871 * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default
2872 * GID. RoCE uses a different mechanism, but still generates a GID via
2873 * a prescribed mechanism and port specific data.
2875 * Return: true if the port uses a GID address to identify devices on the
2878 static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num)
2880 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_AF_IB;
2884 * rdma_cap_eth_ah - Check if the port of device has the capability
2885 * Ethernet Address Handle.
2886 * @device: Device to check
2887 * @port_num: Port number to check
2889 * RoCE is InfiniBand over Ethernet, and it uses a well defined technique
2890 * to fabricate GIDs over Ethernet/IP specific addresses native to the
2891 * port. Normally, packet headers are generated by the sending host
2892 * adapter, but when sending connectionless datagrams, we must manually
2893 * inject the proper headers for the fabric we are communicating over.
2895 * Return: true if we are running as a RoCE port and must force the
2896 * addition of a Global Route Header built from our Ethernet Address
2897 * Handle into our header list for connectionless packets.
2899 static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num)
2901 return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_AH;
2905 * rdma_cap_opa_ah - Check if the port of device supports
2906 * OPA Address handles
2907 * @device: Device to check
2908 * @port_num: Port number to check
2910 * Return: true if we are running on an OPA device which supports
2911 * the extended OPA addressing.
2913 static inline bool rdma_cap_opa_ah(struct ib_device *device, u8 port_num)
2915 return (device->port_immutable[port_num].core_cap_flags &
2916 RDMA_CORE_CAP_OPA_AH) == RDMA_CORE_CAP_OPA_AH;
2920 * rdma_max_mad_size - Return the max MAD size required by this RDMA Port.
2923 * @port_num: Port number
2925 * This MAD size includes the MAD headers and MAD payload. No other headers
2928 * Return the max MAD size required by the Port. Will return 0 if the port
2929 * does not support MADs
2931 static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num)
2933 return device->port_immutable[port_num].max_mad_size;
2937 * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table
2938 * @device: Device to check
2939 * @port_num: Port number to check
2941 * RoCE GID table mechanism manages the various GIDs for a device.
2943 * NOTE: if allocating the port's GID table has failed, this call will still
2944 * return true, but any RoCE GID table API will fail.
2946 * Return: true if the port uses RoCE GID table mechanism in order to manage
2949 static inline bool rdma_cap_roce_gid_table(const struct ib_device *device,
2952 return rdma_protocol_roce(device, port_num) &&
2953 device->add_gid && device->del_gid;
2957 * Check if the device supports READ W/ INVALIDATE.
2959 static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num)
2962 * iWarp drivers must support READ W/ INVALIDATE. No other protocol
2963 * has support for it yet.
2965 return rdma_protocol_iwarp(dev, port_num);
2968 int ib_query_gid(struct ib_device *device,
2969 u8 port_num, int index, union ib_gid *gid,
2970 struct ib_gid_attr *attr);
2972 int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port,
2974 int ib_get_vf_config(struct ib_device *device, int vf, u8 port,
2975 struct ifla_vf_info *info);
2976 int ib_get_vf_stats(struct ib_device *device, int vf, u8 port,
2977 struct ifla_vf_stats *stats);
2978 int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid,
2981 int ib_query_pkey(struct ib_device *device,
2982 u8 port_num, u16 index, u16 *pkey);
2984 int ib_modify_device(struct ib_device *device,
2985 int device_modify_mask,
2986 struct ib_device_modify *device_modify);
2988 int ib_modify_port(struct ib_device *device,
2989 u8 port_num, int port_modify_mask,
2990 struct ib_port_modify *port_modify);
2992 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
2993 u8 *port_num, u16 *index);
2995 int ib_find_pkey(struct ib_device *device,
2996 u8 port_num, u16 pkey, u16 *index);
3000 * Create a memory registration for all memory in the system and place
3001 * the rkey for it into pd->unsafe_global_rkey. This can be used by
3002 * ULPs to avoid the overhead of dynamic MRs.
3004 * This flag is generally considered unsafe and must only be used in
3005 * extremly trusted environments. Every use of it will log a warning
3006 * in the kernel log.
3008 IB_PD_UNSAFE_GLOBAL_RKEY = 0x01,
3011 struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags,
3012 const char *caller);
3013 #define ib_alloc_pd(device, flags) \
3014 __ib_alloc_pd((device), (flags), KBUILD_MODNAME)
3015 void ib_dealloc_pd(struct ib_pd *pd);
3018 * rdma_create_ah - Creates an address handle for the given address vector.
3019 * @pd: The protection domain associated with the address handle.
3020 * @ah_attr: The attributes of the address vector.
3022 * The address handle is used to reference a local or global destination
3023 * in all UD QP post sends.
3025 struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr);
3028 * rdma_create_user_ah - Creates an address handle for the given address vector.
3029 * It resolves destination mac address for ah attribute of RoCE type.
3030 * @pd: The protection domain associated with the address handle.
3031 * @ah_attr: The attributes of the address vector.
3032 * @udata: pointer to user's input output buffer information need by
3035 * It returns 0 on success and returns appropriate error code on error.
3036 * The address handle is used to reference a local or global destination
3037 * in all UD QP post sends.
3039 struct ib_ah *rdma_create_user_ah(struct ib_pd *pd,
3040 struct rdma_ah_attr *ah_attr,
3041 struct ib_udata *udata);
3043 * ib_get_gids_from_rdma_hdr - Get sgid and dgid from GRH or IPv4 header
3045 * @hdr: the L3 header to parse
3046 * @net_type: type of header to parse
3047 * @sgid: place to store source gid
3048 * @dgid: place to store destination gid
3050 int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr,
3051 enum rdma_network_type net_type,
3052 union ib_gid *sgid, union ib_gid *dgid);
3055 * ib_get_rdma_header_version - Get the header version
3056 * @hdr: the L3 header to parse
3058 int ib_get_rdma_header_version(const union rdma_network_hdr *hdr);
3061 * ib_init_ah_attr_from_wc - Initializes address handle attributes from a
3063 * @device: Device on which the received message arrived.
3064 * @port_num: Port on which the received message arrived.
3065 * @wc: Work completion associated with the received message.
3066 * @grh: References the received global route header. This parameter is
3067 * ignored unless the work completion indicates that the GRH is valid.
3068 * @ah_attr: Returned attributes that can be used when creating an address
3069 * handle for replying to the message.
3071 int ib_init_ah_attr_from_wc(struct ib_device *device, u8 port_num,
3072 const struct ib_wc *wc, const struct ib_grh *grh,
3073 struct rdma_ah_attr *ah_attr);
3076 * ib_create_ah_from_wc - Creates an address handle associated with the
3077 * sender of the specified work completion.
3078 * @pd: The protection domain associated with the address handle.
3079 * @wc: Work completion information associated with a received message.
3080 * @grh: References the received global route header. This parameter is
3081 * ignored unless the work completion indicates that the GRH is valid.
3082 * @port_num: The outbound port number to associate with the address.
3084 * The address handle is used to reference a local or global destination
3085 * in all UD QP post sends.
3087 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc,
3088 const struct ib_grh *grh, u8 port_num);
3091 * rdma_modify_ah - Modifies the address vector associated with an address
3093 * @ah: The address handle to modify.
3094 * @ah_attr: The new address vector attributes to associate with the
3097 int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
3100 * rdma_query_ah - Queries the address vector associated with an address
3102 * @ah: The address handle to query.
3103 * @ah_attr: The address vector attributes associated with the address
3106 int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
3109 * rdma_destroy_ah - Destroys an address handle.
3110 * @ah: The address handle to destroy.
3112 int rdma_destroy_ah(struct ib_ah *ah);
3115 * ib_create_srq - Creates a SRQ associated with the specified protection
3117 * @pd: The protection domain associated with the SRQ.
3118 * @srq_init_attr: A list of initial attributes required to create the
3119 * SRQ. If SRQ creation succeeds, then the attributes are updated to
3120 * the actual capabilities of the created SRQ.
3122 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
3123 * requested size of the SRQ, and set to the actual values allocated
3124 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
3125 * will always be at least as large as the requested values.
3127 struct ib_srq *ib_create_srq(struct ib_pd *pd,
3128 struct ib_srq_init_attr *srq_init_attr);
3131 * ib_modify_srq - Modifies the attributes for the specified SRQ.
3132 * @srq: The SRQ to modify.
3133 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
3134 * the current values of selected SRQ attributes are returned.
3135 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
3136 * are being modified.
3138 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
3139 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
3140 * the number of receives queued drops below the limit.
3142 int ib_modify_srq(struct ib_srq *srq,
3143 struct ib_srq_attr *srq_attr,
3144 enum ib_srq_attr_mask srq_attr_mask);
3147 * ib_query_srq - Returns the attribute list and current values for the
3149 * @srq: The SRQ to query.
3150 * @srq_attr: The attributes of the specified SRQ.
3152 int ib_query_srq(struct ib_srq *srq,
3153 struct ib_srq_attr *srq_attr);
3156 * ib_destroy_srq - Destroys the specified SRQ.
3157 * @srq: The SRQ to destroy.
3159 int ib_destroy_srq(struct ib_srq *srq);
3162 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
3163 * @srq: The SRQ to post the work request on.
3164 * @recv_wr: A list of work requests to post on the receive queue.
3165 * @bad_recv_wr: On an immediate failure, this parameter will reference
3166 * the work request that failed to be posted on the QP.
3168 static inline int ib_post_srq_recv(struct ib_srq *srq,
3169 struct ib_recv_wr *recv_wr,
3170 struct ib_recv_wr **bad_recv_wr)
3172 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
3176 * ib_create_qp - Creates a QP associated with the specified protection
3178 * @pd: The protection domain associated with the QP.
3179 * @qp_init_attr: A list of initial attributes required to create the
3180 * QP. If QP creation succeeds, then the attributes are updated to
3181 * the actual capabilities of the created QP.
3183 struct ib_qp *ib_create_qp(struct ib_pd *pd,
3184 struct ib_qp_init_attr *qp_init_attr);
3187 * ib_modify_qp_with_udata - Modifies the attributes for the specified QP.
3188 * @qp: The QP to modify.
3189 * @attr: On input, specifies the QP attributes to modify. On output,
3190 * the current values of selected QP attributes are returned.
3191 * @attr_mask: A bit-mask used to specify which attributes of the QP
3192 * are being modified.
3193 * @udata: pointer to user's input output buffer information
3194 * are being modified.
3195 * It returns 0 on success and returns appropriate error code on error.
3197 int ib_modify_qp_with_udata(struct ib_qp *qp,
3198 struct ib_qp_attr *attr,
3200 struct ib_udata *udata);
3203 * ib_modify_qp - Modifies the attributes for the specified QP and then
3204 * transitions the QP to the given state.
3205 * @qp: The QP to modify.
3206 * @qp_attr: On input, specifies the QP attributes to modify. On output,
3207 * the current values of selected QP attributes are returned.
3208 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
3209 * are being modified.
3211 int ib_modify_qp(struct ib_qp *qp,
3212 struct ib_qp_attr *qp_attr,
3216 * ib_query_qp - Returns the attribute list and current values for the
3218 * @qp: The QP to query.
3219 * @qp_attr: The attributes of the specified QP.
3220 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
3221 * @qp_init_attr: Additional attributes of the selected QP.
3223 * The qp_attr_mask may be used to limit the query to gathering only the
3224 * selected attributes.
3226 int ib_query_qp(struct ib_qp *qp,
3227 struct ib_qp_attr *qp_attr,
3229 struct ib_qp_init_attr *qp_init_attr);
3232 * ib_destroy_qp - Destroys the specified QP.
3233 * @qp: The QP to destroy.
3235 int ib_destroy_qp(struct ib_qp *qp);
3238 * ib_open_qp - Obtain a reference to an existing sharable QP.
3239 * @xrcd - XRC domain
3240 * @qp_open_attr: Attributes identifying the QP to open.
3242 * Returns a reference to a sharable QP.
3244 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
3245 struct ib_qp_open_attr *qp_open_attr);
3248 * ib_close_qp - Release an external reference to a QP.
3249 * @qp: The QP handle to release
3251 * The opened QP handle is released by the caller. The underlying
3252 * shared QP is not destroyed until all internal references are released.
3254 int ib_close_qp(struct ib_qp *qp);
3257 * ib_post_send - Posts a list of work requests to the send queue of
3259 * @qp: The QP to post the work request on.
3260 * @send_wr: A list of work requests to post on the send queue.
3261 * @bad_send_wr: On an immediate failure, this parameter will reference
3262 * the work request that failed to be posted on the QP.
3264 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
3265 * error is returned, the QP state shall not be affected,
3266 * ib_post_send() will return an immediate error after queueing any
3267 * earlier work requests in the list.
3269 static inline int ib_post_send(struct ib_qp *qp,
3270 struct ib_send_wr *send_wr,
3271 struct ib_send_wr **bad_send_wr)
3273 return qp->device->post_send(qp, send_wr, bad_send_wr);
3277 * ib_post_recv - Posts a list of work requests to the receive queue of
3279 * @qp: The QP to post the work request on.
3280 * @recv_wr: A list of work requests to post on the receive queue.
3281 * @bad_recv_wr: On an immediate failure, this parameter will reference
3282 * the work request that failed to be posted on the QP.
3284 static inline int ib_post_recv(struct ib_qp *qp,
3285 struct ib_recv_wr *recv_wr,
3286 struct ib_recv_wr **bad_recv_wr)
3288 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
3291 struct ib_cq *__ib_alloc_cq(struct ib_device *dev, void *private,
3292 int nr_cqe, int comp_vector,
3293 enum ib_poll_context poll_ctx, const char *caller);
3294 #define ib_alloc_cq(device, priv, nr_cqe, comp_vect, poll_ctx) \
3295 __ib_alloc_cq((device), (priv), (nr_cqe), (comp_vect), (poll_ctx), KBUILD_MODNAME)
3297 void ib_free_cq(struct ib_cq *cq);
3298 int ib_process_cq_direct(struct ib_cq *cq, int budget);
3301 * ib_create_cq - Creates a CQ on the specified device.
3302 * @device: The device on which to create the CQ.
3303 * @comp_handler: A user-specified callback that is invoked when a
3304 * completion event occurs on the CQ.
3305 * @event_handler: A user-specified callback that is invoked when an
3306 * asynchronous event not associated with a completion occurs on the CQ.
3307 * @cq_context: Context associated with the CQ returned to the user via
3308 * the associated completion and event handlers.
3309 * @cq_attr: The attributes the CQ should be created upon.
3311 * Users can examine the cq structure to determine the actual CQ size.
3313 struct ib_cq *ib_create_cq(struct ib_device *device,
3314 ib_comp_handler comp_handler,
3315 void (*event_handler)(struct ib_event *, void *),
3317 const struct ib_cq_init_attr *cq_attr);
3320 * ib_resize_cq - Modifies the capacity of the CQ.
3321 * @cq: The CQ to resize.
3322 * @cqe: The minimum size of the CQ.
3324 * Users can examine the cq structure to determine the actual CQ size.
3326 int ib_resize_cq(struct ib_cq *cq, int cqe);
3329 * rdma_set_cq_moderation - Modifies moderation params of the CQ
3330 * @cq: The CQ to modify.
3331 * @cq_count: number of CQEs that will trigger an event
3332 * @cq_period: max period of time in usec before triggering an event
3335 int rdma_set_cq_moderation(struct ib_cq *cq, u16 cq_count, u16 cq_period);
3338 * ib_destroy_cq - Destroys the specified CQ.
3339 * @cq: The CQ to destroy.
3341 int ib_destroy_cq(struct ib_cq *cq);
3344 * ib_poll_cq - poll a CQ for completion(s)
3345 * @cq:the CQ being polled
3346 * @num_entries:maximum number of completions to return
3347 * @wc:array of at least @num_entries &struct ib_wc where completions
3350 * Poll a CQ for (possibly multiple) completions. If the return value
3351 * is < 0, an error occurred. If the return value is >= 0, it is the
3352 * number of completions returned. If the return value is
3353 * non-negative and < num_entries, then the CQ was emptied.
3355 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
3358 return cq->device->poll_cq(cq, num_entries, wc);
3362 * ib_req_notify_cq - Request completion notification on a CQ.
3363 * @cq: The CQ to generate an event for.
3365 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
3366 * to request an event on the next solicited event or next work
3367 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
3368 * may also be |ed in to request a hint about missed events, as
3372 * < 0 means an error occurred while requesting notification
3373 * == 0 means notification was requested successfully, and if
3374 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
3375 * were missed and it is safe to wait for another event. In
3376 * this case is it guaranteed that any work completions added
3377 * to the CQ since the last CQ poll will trigger a completion
3378 * notification event.
3379 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
3380 * in. It means that the consumer must poll the CQ again to
3381 * make sure it is empty to avoid missing an event because of a
3382 * race between requesting notification and an entry being
3383 * added to the CQ. This return value means it is possible
3384 * (but not guaranteed) that a work completion has been added
3385 * to the CQ since the last poll without triggering a
3386 * completion notification event.
3388 static inline int ib_req_notify_cq(struct ib_cq *cq,
3389 enum ib_cq_notify_flags flags)
3391 return cq->device->req_notify_cq(cq, flags);
3395 * ib_req_ncomp_notif - Request completion notification when there are
3396 * at least the specified number of unreaped completions on the CQ.
3397 * @cq: The CQ to generate an event for.
3398 * @wc_cnt: The number of unreaped completions that should be on the
3399 * CQ before an event is generated.
3401 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
3403 return cq->device->req_ncomp_notif ?
3404 cq->device->req_ncomp_notif(cq, wc_cnt) :
3409 * ib_dma_mapping_error - check a DMA addr for error
3410 * @dev: The device for which the dma_addr was created
3411 * @dma_addr: The DMA address to check
3413 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
3415 return dma_mapping_error(dev->dma_device, dma_addr);
3419 * ib_dma_map_single - Map a kernel virtual address to DMA address
3420 * @dev: The device for which the dma_addr is to be created
3421 * @cpu_addr: The kernel virtual address
3422 * @size: The size of the region in bytes
3423 * @direction: The direction of the DMA
3425 static inline u64 ib_dma_map_single(struct ib_device *dev,
3426 void *cpu_addr, size_t size,
3427 enum dma_data_direction direction)
3429 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
3433 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
3434 * @dev: The device for which the DMA address was created
3435 * @addr: The DMA address
3436 * @size: The size of the region in bytes
3437 * @direction: The direction of the DMA
3439 static inline void ib_dma_unmap_single(struct ib_device *dev,
3440 u64 addr, size_t size,
3441 enum dma_data_direction direction)
3443 dma_unmap_single(dev->dma_device, addr, size, direction);
3447 * ib_dma_map_page - Map a physical page to DMA address
3448 * @dev: The device for which the dma_addr is to be created
3449 * @page: The page to be mapped
3450 * @offset: The offset within the page
3451 * @size: The size of the region in bytes
3452 * @direction: The direction of the DMA
3454 static inline u64 ib_dma_map_page(struct ib_device *dev,
3456 unsigned long offset,
3458 enum dma_data_direction direction)
3460 return dma_map_page(dev->dma_device, page, offset, size, direction);
3464 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
3465 * @dev: The device for which the DMA address was created
3466 * @addr: The DMA address
3467 * @size: The size of the region in bytes
3468 * @direction: The direction of the DMA
3470 static inline void ib_dma_unmap_page(struct ib_device *dev,
3471 u64 addr, size_t size,
3472 enum dma_data_direction direction)
3474 dma_unmap_page(dev->dma_device, addr, size, direction);
3478 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
3479 * @dev: The device for which the DMA addresses are to be created
3480 * @sg: The array of scatter/gather entries
3481 * @nents: The number of scatter/gather entries
3482 * @direction: The direction of the DMA
3484 static inline int ib_dma_map_sg(struct ib_device *dev,
3485 struct scatterlist *sg, int nents,
3486 enum dma_data_direction direction)
3488 return dma_map_sg(dev->dma_device, sg, nents, direction);
3492 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
3493 * @dev: The device for which the DMA addresses were created
3494 * @sg: The array of scatter/gather entries
3495 * @nents: The number of scatter/gather entries
3496 * @direction: The direction of the DMA
3498 static inline void ib_dma_unmap_sg(struct ib_device *dev,
3499 struct scatterlist *sg, int nents,
3500 enum dma_data_direction direction)
3502 dma_unmap_sg(dev->dma_device, sg, nents, direction);
3505 static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
3506 struct scatterlist *sg, int nents,
3507 enum dma_data_direction direction,
3508 unsigned long dma_attrs)
3510 return dma_map_sg_attrs(dev->dma_device, sg, nents, direction,
3514 static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
3515 struct scatterlist *sg, int nents,
3516 enum dma_data_direction direction,
3517 unsigned long dma_attrs)
3519 dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, dma_attrs);
3522 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
3523 * @dev: The device for which the DMA addresses were created
3524 * @sg: The scatter/gather entry
3526 * Note: this function is obsolete. To do: change all occurrences of
3527 * ib_sg_dma_address() into sg_dma_address().
3529 static inline u64 ib_sg_dma_address(struct ib_device *dev,
3530 struct scatterlist *sg)
3532 return sg_dma_address(sg);
3536 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
3537 * @dev: The device for which the DMA addresses were created
3538 * @sg: The scatter/gather entry
3540 * Note: this function is obsolete. To do: change all occurrences of
3541 * ib_sg_dma_len() into sg_dma_len().
3543 static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
3544 struct scatterlist *sg)
3546 return sg_dma_len(sg);
3550 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
3551 * @dev: The device for which the DMA address was created
3552 * @addr: The DMA address
3553 * @size: The size of the region in bytes
3554 * @dir: The direction of the DMA
3556 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
3559 enum dma_data_direction dir)
3561 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
3565 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
3566 * @dev: The device for which the DMA address was created
3567 * @addr: The DMA address
3568 * @size: The size of the region in bytes
3569 * @dir: The direction of the DMA
3571 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
3574 enum dma_data_direction dir)
3576 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
3580 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
3581 * @dev: The device for which the DMA address is requested
3582 * @size: The size of the region to allocate in bytes
3583 * @dma_handle: A pointer for returning the DMA address of the region
3584 * @flag: memory allocator flags
3586 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
3588 dma_addr_t *dma_handle,
3591 return dma_alloc_coherent(dev->dma_device, size, dma_handle, flag);
3595 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
3596 * @dev: The device for which the DMA addresses were allocated
3597 * @size: The size of the region
3598 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
3599 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
3601 static inline void ib_dma_free_coherent(struct ib_device *dev,
3602 size_t size, void *cpu_addr,
3603 dma_addr_t dma_handle)
3605 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
3609 * ib_dereg_mr - Deregisters a memory region and removes it from the
3610 * HCA translation table.
3611 * @mr: The memory region to deregister.
3613 * This function can fail, if the memory region has memory windows bound to it.
3615 int ib_dereg_mr(struct ib_mr *mr);
3617 struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
3618 enum ib_mr_type mr_type,
3622 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
3624 * @mr - struct ib_mr pointer to be updated.
3625 * @newkey - new key to be used.
3627 static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey)
3629 mr->lkey = (mr->lkey & 0xffffff00) | newkey;
3630 mr->rkey = (mr->rkey & 0xffffff00) | newkey;
3634 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
3635 * for calculating a new rkey for type 2 memory windows.
3636 * @rkey - the rkey to increment.
3638 static inline u32 ib_inc_rkey(u32 rkey)
3640 const u32 mask = 0x000000ff;
3641 return ((rkey + 1) & mask) | (rkey & ~mask);
3645 * ib_alloc_fmr - Allocates a unmapped fast memory region.
3646 * @pd: The protection domain associated with the unmapped region.
3647 * @mr_access_flags: Specifies the memory access rights.
3648 * @fmr_attr: Attributes of the unmapped region.
3650 * A fast memory region must be mapped before it can be used as part of
3653 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
3654 int mr_access_flags,
3655 struct ib_fmr_attr *fmr_attr);
3658 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
3659 * @fmr: The fast memory region to associate with the pages.
3660 * @page_list: An array of physical pages to map to the fast memory region.
3661 * @list_len: The number of pages in page_list.
3662 * @iova: The I/O virtual address to use with the mapped region.
3664 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
3665 u64 *page_list, int list_len,
3668 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
3672 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
3673 * @fmr_list: A linked list of fast memory regions to unmap.
3675 int ib_unmap_fmr(struct list_head *fmr_list);
3678 * ib_dealloc_fmr - Deallocates a fast memory region.
3679 * @fmr: The fast memory region to deallocate.
3681 int ib_dealloc_fmr(struct ib_fmr *fmr);
3684 * ib_attach_mcast - Attaches the specified QP to a multicast group.
3685 * @qp: QP to attach to the multicast group. The QP must be type
3687 * @gid: Multicast group GID.
3688 * @lid: Multicast group LID in host byte order.
3690 * In order to send and receive multicast packets, subnet
3691 * administration must have created the multicast group and configured
3692 * the fabric appropriately. The port associated with the specified
3693 * QP must also be a member of the multicast group.
3695 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
3698 * ib_detach_mcast - Detaches the specified QP from a multicast group.
3699 * @qp: QP to detach from the multicast group.
3700 * @gid: Multicast group GID.
3701 * @lid: Multicast group LID in host byte order.
3703 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
3706 * ib_alloc_xrcd - Allocates an XRC domain.
3707 * @device: The device on which to allocate the XRC domain.
3708 * @caller: Module name for kernel consumers
3710 struct ib_xrcd *__ib_alloc_xrcd(struct ib_device *device, const char *caller);
3711 #define ib_alloc_xrcd(device) \
3712 __ib_alloc_xrcd((device), KBUILD_MODNAME)
3715 * ib_dealloc_xrcd - Deallocates an XRC domain.
3716 * @xrcd: The XRC domain to deallocate.
3718 int ib_dealloc_xrcd(struct ib_xrcd *xrcd);
3720 struct ib_flow *ib_create_flow(struct ib_qp *qp,
3721 struct ib_flow_attr *flow_attr, int domain);
3722 int ib_destroy_flow(struct ib_flow *flow_id);
3724 static inline int ib_check_mr_access(int flags)
3727 * Local write permission is required if remote write or
3728 * remote atomic permission is also requested.
3730 if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
3731 !(flags & IB_ACCESS_LOCAL_WRITE))
3738 * ib_check_mr_status: lightweight check of MR status.
3739 * This routine may provide status checks on a selected
3740 * ib_mr. first use is for signature status check.
3742 * @mr: A memory region.
3743 * @check_mask: Bitmask of which checks to perform from
3744 * ib_mr_status_check enumeration.
3745 * @mr_status: The container of relevant status checks.
3746 * failed checks will be indicated in the status bitmask
3747 * and the relevant info shall be in the error item.
3749 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
3750 struct ib_mr_status *mr_status);
3752 struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port,
3753 u16 pkey, const union ib_gid *gid,
3754 const struct sockaddr *addr);
3755 struct ib_wq *ib_create_wq(struct ib_pd *pd,
3756 struct ib_wq_init_attr *init_attr);
3757 int ib_destroy_wq(struct ib_wq *wq);
3758 int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *attr,
3760 struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device,
3761 struct ib_rwq_ind_table_init_attr*
3762 wq_ind_table_init_attr);
3763 int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);
3765 int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
3766 unsigned int *sg_offset, unsigned int page_size);
3769 ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
3770 unsigned int *sg_offset, unsigned int page_size)
3774 n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size);
3780 int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents,
3781 unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64));
3783 void ib_drain_rq(struct ib_qp *qp);
3784 void ib_drain_sq(struct ib_qp *qp);
3785 void ib_drain_qp(struct ib_qp *qp);
3787 int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u8 *speed, u8 *width);
3789 static inline u8 *rdma_ah_retrieve_dmac(struct rdma_ah_attr *attr)
3791 if (attr->type == RDMA_AH_ATTR_TYPE_ROCE)
3792 return attr->roce.dmac;
3796 static inline void rdma_ah_set_dlid(struct rdma_ah_attr *attr, u32 dlid)
3798 if (attr->type == RDMA_AH_ATTR_TYPE_IB)
3799 attr->ib.dlid = (u16)dlid;
3800 else if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
3801 attr->opa.dlid = dlid;
3804 static inline u32 rdma_ah_get_dlid(const struct rdma_ah_attr *attr)
3806 if (attr->type == RDMA_AH_ATTR_TYPE_IB)
3807 return attr->ib.dlid;
3808 else if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
3809 return attr->opa.dlid;
3813 static inline void rdma_ah_set_sl(struct rdma_ah_attr *attr, u8 sl)
3818 static inline u8 rdma_ah_get_sl(const struct rdma_ah_attr *attr)
3823 static inline void rdma_ah_set_path_bits(struct rdma_ah_attr *attr,
3826 if (attr->type == RDMA_AH_ATTR_TYPE_IB)
3827 attr->ib.src_path_bits = src_path_bits;
3828 else if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
3829 attr->opa.src_path_bits = src_path_bits;
3832 static inline u8 rdma_ah_get_path_bits(const struct rdma_ah_attr *attr)
3834 if (attr->type == RDMA_AH_ATTR_TYPE_IB)
3835 return attr->ib.src_path_bits;
3836 else if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
3837 return attr->opa.src_path_bits;
3841 static inline void rdma_ah_set_make_grd(struct rdma_ah_attr *attr,
3844 if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
3845 attr->opa.make_grd = make_grd;
3848 static inline bool rdma_ah_get_make_grd(const struct rdma_ah_attr *attr)
3850 if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
3851 return attr->opa.make_grd;
3855 static inline void rdma_ah_set_port_num(struct rdma_ah_attr *attr, u8 port_num)
3857 attr->port_num = port_num;
3860 static inline u8 rdma_ah_get_port_num(const struct rdma_ah_attr *attr)
3862 return attr->port_num;
3865 static inline void rdma_ah_set_static_rate(struct rdma_ah_attr *attr,
3868 attr->static_rate = static_rate;
3871 static inline u8 rdma_ah_get_static_rate(const struct rdma_ah_attr *attr)
3873 return attr->static_rate;
3876 static inline void rdma_ah_set_ah_flags(struct rdma_ah_attr *attr,
3877 enum ib_ah_flags flag)
3879 attr->ah_flags = flag;
3882 static inline enum ib_ah_flags
3883 rdma_ah_get_ah_flags(const struct rdma_ah_attr *attr)
3885 return attr->ah_flags;
3888 static inline const struct ib_global_route
3889 *rdma_ah_read_grh(const struct rdma_ah_attr *attr)
3894 /*To retrieve and modify the grh */
3895 static inline struct ib_global_route
3896 *rdma_ah_retrieve_grh(struct rdma_ah_attr *attr)
3901 static inline void rdma_ah_set_dgid_raw(struct rdma_ah_attr *attr, void *dgid)
3903 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
3905 memcpy(grh->dgid.raw, dgid, sizeof(grh->dgid));
3908 static inline void rdma_ah_set_subnet_prefix(struct rdma_ah_attr *attr,
3911 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
3913 grh->dgid.global.subnet_prefix = prefix;
3916 static inline void rdma_ah_set_interface_id(struct rdma_ah_attr *attr,
3919 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
3921 grh->dgid.global.interface_id = if_id;
3924 static inline void rdma_ah_set_grh(struct rdma_ah_attr *attr,
3925 union ib_gid *dgid, u32 flow_label,
3926 u8 sgid_index, u8 hop_limit,
3929 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
3931 attr->ah_flags = IB_AH_GRH;
3934 grh->flow_label = flow_label;
3935 grh->sgid_index = sgid_index;
3936 grh->hop_limit = hop_limit;
3937 grh->traffic_class = traffic_class;
3941 * rdma_ah_find_type - Return address handle type.
3943 * @dev: Device to be checked
3944 * @port_num: Port number
3946 static inline enum rdma_ah_attr_type rdma_ah_find_type(struct ib_device *dev,
3949 if (rdma_protocol_roce(dev, port_num))
3950 return RDMA_AH_ATTR_TYPE_ROCE;
3951 if (rdma_protocol_ib(dev, port_num)) {
3952 if (rdma_cap_opa_ah(dev, port_num))
3953 return RDMA_AH_ATTR_TYPE_OPA;
3954 return RDMA_AH_ATTR_TYPE_IB;
3957 return RDMA_AH_ATTR_TYPE_UNDEFINED;
3961 * ib_lid_cpu16 - Return lid in 16bit CPU encoding.
3962 * In the current implementation the only way to get
3963 * get the 32bit lid is from other sources for OPA.
3964 * For IB, lids will always be 16bits so cast the
3965 * value accordingly.
3969 static inline u16 ib_lid_cpu16(u32 lid)
3971 WARN_ON_ONCE(lid & 0xFFFF0000);
3976 * ib_lid_be16 - Return lid in 16bit BE encoding.
3980 static inline __be16 ib_lid_be16(u32 lid)
3982 WARN_ON_ONCE(lid & 0xFFFF0000);
3983 return cpu_to_be16((u16)lid);
3987 * ib_get_vector_affinity - Get the affinity mappings of a given completion
3989 * @device: the rdma device
3990 * @comp_vector: index of completion vector
3992 * Returns NULL on failure, otherwise a corresponding cpu map of the
3993 * completion vector (returns all-cpus map if the device driver doesn't
3994 * implement get_vector_affinity).
3996 static inline const struct cpumask *
3997 ib_get_vector_affinity(struct ib_device *device, int comp_vector)
3999 if (comp_vector < 0 || comp_vector >= device->num_comp_vectors ||
4000 !device->get_vector_affinity)
4003 return device->get_vector_affinity(device, comp_vector);
4008 * rdma_roce_rescan_device - Rescan all of the network devices in the system
4009 * and add their gids, as needed, to the relevant RoCE devices.
4011 * @device: the rdma device
4013 void rdma_roce_rescan_device(struct ib_device *ibdev);
4015 #endif /* IB_VERBS_H */