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>
44 #include <linux/dma-mapping.h>
45 #include <linux/kref.h>
46 #include <linux/list.h>
47 #include <linux/rwsem.h>
48 #include <linux/workqueue.h>
49 #include <linux/irq_poll.h>
50 #include <uapi/linux/if_ether.h>
53 #include <linux/string.h>
54 #include <linux/slab.h>
55 #include <linux/netdevice.h>
56 #include <linux/refcount.h>
57 #include <linux/if_link.h>
58 #include <linux/atomic.h>
59 #include <linux/mmu_notifier.h>
60 #include <linux/uaccess.h>
61 #include <linux/cgroup_rdma.h>
62 #include <linux/irqflags.h>
63 #include <linux/preempt.h>
64 #include <linux/dim.h>
65 #include <uapi/rdma/ib_user_verbs.h>
66 #include <rdma/rdma_counter.h>
67 #include <rdma/restrack.h>
68 #include <rdma/signature.h>
69 #include <uapi/rdma/rdma_user_ioctl.h>
70 #include <uapi/rdma/ib_user_ioctl_verbs.h>
72 #define IB_FW_VERSION_NAME_MAX ETHTOOL_FWVERS_LEN
76 struct ib_usrq_object;
79 extern struct workqueue_struct *ib_wq;
80 extern struct workqueue_struct *ib_comp_wq;
81 extern struct workqueue_struct *ib_comp_unbound_wq;
86 void ibdev_printk(const char *level, const struct ib_device *ibdev,
87 const char *format, ...);
89 void ibdev_emerg(const struct ib_device *ibdev, const char *format, ...);
91 void ibdev_alert(const struct ib_device *ibdev, const char *format, ...);
93 void ibdev_crit(const struct ib_device *ibdev, const char *format, ...);
95 void ibdev_err(const struct ib_device *ibdev, const char *format, ...);
97 void ibdev_warn(const struct ib_device *ibdev, const char *format, ...);
99 void ibdev_notice(const struct ib_device *ibdev, const char *format, ...);
100 __printf(2, 3) __cold
101 void ibdev_info(const struct ib_device *ibdev, const char *format, ...);
103 #if defined(CONFIG_DYNAMIC_DEBUG)
104 #define ibdev_dbg(__dev, format, args...) \
105 dynamic_ibdev_dbg(__dev, format, ##args)
107 __printf(2, 3) __cold
109 void ibdev_dbg(const struct ib_device *ibdev, const char *format, ...) {}
112 #define ibdev_level_ratelimited(ibdev_level, ibdev, fmt, ...) \
114 static DEFINE_RATELIMIT_STATE(_rs, \
115 DEFAULT_RATELIMIT_INTERVAL, \
116 DEFAULT_RATELIMIT_BURST); \
117 if (__ratelimit(&_rs)) \
118 ibdev_level(ibdev, fmt, ##__VA_ARGS__); \
121 #define ibdev_emerg_ratelimited(ibdev, fmt, ...) \
122 ibdev_level_ratelimited(ibdev_emerg, ibdev, fmt, ##__VA_ARGS__)
123 #define ibdev_alert_ratelimited(ibdev, fmt, ...) \
124 ibdev_level_ratelimited(ibdev_alert, ibdev, fmt, ##__VA_ARGS__)
125 #define ibdev_crit_ratelimited(ibdev, fmt, ...) \
126 ibdev_level_ratelimited(ibdev_crit, ibdev, fmt, ##__VA_ARGS__)
127 #define ibdev_err_ratelimited(ibdev, fmt, ...) \
128 ibdev_level_ratelimited(ibdev_err, ibdev, fmt, ##__VA_ARGS__)
129 #define ibdev_warn_ratelimited(ibdev, fmt, ...) \
130 ibdev_level_ratelimited(ibdev_warn, ibdev, fmt, ##__VA_ARGS__)
131 #define ibdev_notice_ratelimited(ibdev, fmt, ...) \
132 ibdev_level_ratelimited(ibdev_notice, ibdev, fmt, ##__VA_ARGS__)
133 #define ibdev_info_ratelimited(ibdev, fmt, ...) \
134 ibdev_level_ratelimited(ibdev_info, ibdev, fmt, ##__VA_ARGS__)
136 #if defined(CONFIG_DYNAMIC_DEBUG)
137 /* descriptor check is first to prevent flooding with "callbacks suppressed" */
138 #define ibdev_dbg_ratelimited(ibdev, fmt, ...) \
140 static DEFINE_RATELIMIT_STATE(_rs, \
141 DEFAULT_RATELIMIT_INTERVAL, \
142 DEFAULT_RATELIMIT_BURST); \
143 DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
144 if (DYNAMIC_DEBUG_BRANCH(descriptor) && __ratelimit(&_rs)) \
145 __dynamic_ibdev_dbg(&descriptor, ibdev, fmt, \
149 __printf(2, 3) __cold
151 void ibdev_dbg_ratelimited(const struct ib_device *ibdev, const char *format, ...) {}
157 __be64 subnet_prefix;
162 extern union ib_gid zgid;
165 /* If link layer is Ethernet, this is RoCE V1 */
167 IB_GID_TYPE_ROCE = 0,
168 IB_GID_TYPE_ROCE_UDP_ENCAP = 1,
172 #define ROCE_V2_UDP_DPORT 4791
174 struct net_device __rcu *ndev;
175 struct ib_device *device;
177 enum ib_gid_type gid_type;
183 /* set the local administered indication */
184 IB_SA_WELL_KNOWN_GUID = BIT_ULL(57) | 2,
187 enum rdma_transport_type {
189 RDMA_TRANSPORT_IWARP,
190 RDMA_TRANSPORT_USNIC,
191 RDMA_TRANSPORT_USNIC_UDP,
192 RDMA_TRANSPORT_UNSPECIFIED,
195 enum rdma_protocol_type {
199 RDMA_PROTOCOL_USNIC_UDP
202 __attribute_const__ enum rdma_transport_type
203 rdma_node_get_transport(unsigned int node_type);
205 enum rdma_network_type {
207 RDMA_NETWORK_ROCE_V1 = RDMA_NETWORK_IB,
212 static inline enum ib_gid_type ib_network_to_gid_type(enum rdma_network_type network_type)
214 if (network_type == RDMA_NETWORK_IPV4 ||
215 network_type == RDMA_NETWORK_IPV6)
216 return IB_GID_TYPE_ROCE_UDP_ENCAP;
218 /* IB_GID_TYPE_IB same as RDMA_NETWORK_ROCE_V1 */
219 return IB_GID_TYPE_IB;
222 static inline enum rdma_network_type
223 rdma_gid_attr_network_type(const struct ib_gid_attr *attr)
225 if (attr->gid_type == IB_GID_TYPE_IB)
226 return RDMA_NETWORK_IB;
228 if (ipv6_addr_v4mapped((struct in6_addr *)&attr->gid))
229 return RDMA_NETWORK_IPV4;
231 return RDMA_NETWORK_IPV6;
234 enum rdma_link_layer {
235 IB_LINK_LAYER_UNSPECIFIED,
236 IB_LINK_LAYER_INFINIBAND,
237 IB_LINK_LAYER_ETHERNET,
240 enum ib_device_cap_flags {
241 IB_DEVICE_RESIZE_MAX_WR = (1 << 0),
242 IB_DEVICE_BAD_PKEY_CNTR = (1 << 1),
243 IB_DEVICE_BAD_QKEY_CNTR = (1 << 2),
244 IB_DEVICE_RAW_MULTI = (1 << 3),
245 IB_DEVICE_AUTO_PATH_MIG = (1 << 4),
246 IB_DEVICE_CHANGE_PHY_PORT = (1 << 5),
247 IB_DEVICE_UD_AV_PORT_ENFORCE = (1 << 6),
248 IB_DEVICE_CURR_QP_STATE_MOD = (1 << 7),
249 IB_DEVICE_SHUTDOWN_PORT = (1 << 8),
250 /* Not in use, former INIT_TYPE = (1 << 9),*/
251 IB_DEVICE_PORT_ACTIVE_EVENT = (1 << 10),
252 IB_DEVICE_SYS_IMAGE_GUID = (1 << 11),
253 IB_DEVICE_RC_RNR_NAK_GEN = (1 << 12),
254 IB_DEVICE_SRQ_RESIZE = (1 << 13),
255 IB_DEVICE_N_NOTIFY_CQ = (1 << 14),
258 * This device supports a per-device lkey or stag that can be
259 * used without performing a memory registration for the local
260 * memory. Note that ULPs should never check this flag, but
261 * instead of use the local_dma_lkey flag in the ib_pd structure,
262 * which will always contain a usable lkey.
264 IB_DEVICE_LOCAL_DMA_LKEY = (1 << 15),
265 /* Reserved, old SEND_W_INV = (1 << 16),*/
266 IB_DEVICE_MEM_WINDOW = (1 << 17),
268 * Devices should set IB_DEVICE_UD_IP_SUM if they support
269 * insertion of UDP and TCP checksum on outgoing UD IPoIB
270 * messages and can verify the validity of checksum for
271 * incoming messages. Setting this flag implies that the
272 * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
274 IB_DEVICE_UD_IP_CSUM = (1 << 18),
275 IB_DEVICE_UD_TSO = (1 << 19),
276 IB_DEVICE_XRC = (1 << 20),
279 * This device supports the IB "base memory management extension",
280 * which includes support for fast registrations (IB_WR_REG_MR,
281 * IB_WR_LOCAL_INV and IB_WR_SEND_WITH_INV verbs). This flag should
282 * also be set by any iWarp device which must support FRs to comply
283 * to the iWarp verbs spec. iWarp devices also support the
284 * IB_WR_RDMA_READ_WITH_INV verb for RDMA READs that invalidate the
287 IB_DEVICE_MEM_MGT_EXTENSIONS = (1 << 21),
288 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1 << 22),
289 IB_DEVICE_MEM_WINDOW_TYPE_2A = (1 << 23),
290 IB_DEVICE_MEM_WINDOW_TYPE_2B = (1 << 24),
291 IB_DEVICE_RC_IP_CSUM = (1 << 25),
292 /* Deprecated. Please use IB_RAW_PACKET_CAP_IP_CSUM. */
293 IB_DEVICE_RAW_IP_CSUM = (1 << 26),
295 * Devices should set IB_DEVICE_CROSS_CHANNEL if they
296 * support execution of WQEs that involve synchronization
297 * of I/O operations with single completion queue managed
300 IB_DEVICE_CROSS_CHANNEL = (1 << 27),
301 IB_DEVICE_MANAGED_FLOW_STEERING = (1 << 29),
302 IB_DEVICE_INTEGRITY_HANDOVER = (1 << 30),
303 IB_DEVICE_ON_DEMAND_PAGING = (1ULL << 31),
304 IB_DEVICE_SG_GAPS_REG = (1ULL << 32),
305 IB_DEVICE_VIRTUAL_FUNCTION = (1ULL << 33),
306 /* Deprecated. Please use IB_RAW_PACKET_CAP_SCATTER_FCS. */
307 IB_DEVICE_RAW_SCATTER_FCS = (1ULL << 34),
308 IB_DEVICE_RDMA_NETDEV_OPA_VNIC = (1ULL << 35),
309 /* The device supports padding incoming writes to cacheline. */
310 IB_DEVICE_PCI_WRITE_END_PADDING = (1ULL << 36),
311 IB_DEVICE_ALLOW_USER_UNREG = (1ULL << 37),
320 enum ib_odp_general_cap_bits {
321 IB_ODP_SUPPORT = 1 << 0,
322 IB_ODP_SUPPORT_IMPLICIT = 1 << 1,
325 enum ib_odp_transport_cap_bits {
326 IB_ODP_SUPPORT_SEND = 1 << 0,
327 IB_ODP_SUPPORT_RECV = 1 << 1,
328 IB_ODP_SUPPORT_WRITE = 1 << 2,
329 IB_ODP_SUPPORT_READ = 1 << 3,
330 IB_ODP_SUPPORT_ATOMIC = 1 << 4,
331 IB_ODP_SUPPORT_SRQ_RECV = 1 << 5,
335 uint64_t general_caps;
337 uint32_t rc_odp_caps;
338 uint32_t uc_odp_caps;
339 uint32_t ud_odp_caps;
340 uint32_t xrc_odp_caps;
341 } per_transport_caps;
345 /* Corresponding bit will be set if qp type from
346 * 'enum ib_qp_type' is supported, e.g.
347 * supported_qpts |= 1 << IB_QPT_UD
350 u32 max_rwq_indirection_tables;
351 u32 max_rwq_indirection_table_size;
354 enum ib_tm_cap_flags {
355 /* Support tag matching with rendezvous offload for RC transport */
356 IB_TM_CAP_RNDV_RC = 1 << 0,
360 /* Max size of RNDV header */
361 u32 max_rndv_hdr_size;
362 /* Max number of entries in tag matching list */
364 /* From enum ib_tm_cap_flags */
366 /* Max number of outstanding list operations */
368 /* Max number of SGE in tag matching entry */
372 struct ib_cq_init_attr {
378 enum ib_cq_attr_mask {
379 IB_CQ_MODERATE = 1 << 0,
383 u16 max_cq_moderation_count;
384 u16 max_cq_moderation_period;
387 struct ib_dm_mr_attr {
393 struct ib_dm_alloc_attr {
399 struct ib_device_attr {
401 __be64 sys_image_guid;
409 u64 device_cap_flags;
420 int max_qp_init_rd_atom;
421 int max_ee_init_rd_atom;
422 enum ib_atomic_cap atomic_cap;
423 enum ib_atomic_cap masked_atomic_cap;
430 int max_mcast_qp_attach;
431 int max_total_mcast_qp_attach;
438 unsigned int max_fast_reg_page_list_len;
439 unsigned int max_pi_fast_reg_page_list_len;
441 u8 local_ca_ack_delay;
444 struct ib_odp_caps odp_caps;
445 uint64_t timestamp_mask;
446 uint64_t hca_core_clock; /* in KHZ */
447 struct ib_rss_caps rss_caps;
449 u32 raw_packet_caps; /* Use ib_raw_packet_caps enum */
450 struct ib_tm_caps tm_caps;
451 struct ib_cq_caps cq_caps;
453 /* Max entries for sgl for optimized performance per READ */
465 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
468 case IB_MTU_256: return 256;
469 case IB_MTU_512: return 512;
470 case IB_MTU_1024: return 1024;
471 case IB_MTU_2048: return 2048;
472 case IB_MTU_4096: return 4096;
477 static inline enum ib_mtu ib_mtu_int_to_enum(int mtu)
481 else if (mtu >= 2048)
483 else if (mtu >= 1024)
497 IB_PORT_ACTIVE_DEFER = 5
500 enum ib_port_phys_state {
501 IB_PORT_PHYS_STATE_SLEEP = 1,
502 IB_PORT_PHYS_STATE_POLLING = 2,
503 IB_PORT_PHYS_STATE_DISABLED = 3,
504 IB_PORT_PHYS_STATE_PORT_CONFIGURATION_TRAINING = 4,
505 IB_PORT_PHYS_STATE_LINK_UP = 5,
506 IB_PORT_PHYS_STATE_LINK_ERROR_RECOVERY = 6,
507 IB_PORT_PHYS_STATE_PHY_TEST = 7,
518 static inline int ib_width_enum_to_int(enum ib_port_width width)
521 case IB_WIDTH_1X: return 1;
522 case IB_WIDTH_2X: return 2;
523 case IB_WIDTH_4X: return 4;
524 case IB_WIDTH_8X: return 8;
525 case IB_WIDTH_12X: return 12;
541 * struct rdma_hw_stats
542 * @lock - Mutex to protect parallel write access to lifespan and values
543 * of counters, which are 64bits and not guaranteeed to be written
544 * atomicaly on 32bits systems.
545 * @timestamp - Used by the core code to track when the last update was
546 * @lifespan - Used by the core code to determine how old the counters
547 * should be before being updated again. Stored in jiffies, defaults
548 * to 10 milliseconds, drivers can override the default be specifying
549 * their own value during their allocation routine.
550 * @name - Array of pointers to static names used for the counters in
552 * @num_counters - How many hardware counters there are. If name is
553 * shorter than this number, a kernel oops will result. Driver authors
554 * are encouraged to leave BUILD_BUG_ON(ARRAY_SIZE(@name) < num_counters)
555 * in their code to prevent this.
556 * @value - Array of u64 counters that are accessed by the sysfs code and
557 * filled in by the drivers get_stats routine
559 struct rdma_hw_stats {
560 struct mutex lock; /* Protect lifespan and values[] */
561 unsigned long timestamp;
562 unsigned long lifespan;
563 const char * const *names;
568 #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10
570 * rdma_alloc_hw_stats_struct - Helper function to allocate dynamic struct
572 * @names - Array of static const char *
573 * @num_counters - How many elements in array
574 * @lifespan - How many milliseconds between updates
576 static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct(
577 const char * const *names, int num_counters,
578 unsigned long lifespan)
580 struct rdma_hw_stats *stats;
582 stats = kzalloc(sizeof(*stats) + num_counters * sizeof(u64),
586 stats->names = names;
587 stats->num_counters = num_counters;
588 stats->lifespan = msecs_to_jiffies(lifespan);
594 /* Define bits for the various functionality this port needs to be supported by
597 /* Management 0x00000FFF */
598 #define RDMA_CORE_CAP_IB_MAD 0x00000001
599 #define RDMA_CORE_CAP_IB_SMI 0x00000002
600 #define RDMA_CORE_CAP_IB_CM 0x00000004
601 #define RDMA_CORE_CAP_IW_CM 0x00000008
602 #define RDMA_CORE_CAP_IB_SA 0x00000010
603 #define RDMA_CORE_CAP_OPA_MAD 0x00000020
605 /* Address format 0x000FF000 */
606 #define RDMA_CORE_CAP_AF_IB 0x00001000
607 #define RDMA_CORE_CAP_ETH_AH 0x00002000
608 #define RDMA_CORE_CAP_OPA_AH 0x00004000
609 #define RDMA_CORE_CAP_IB_GRH_REQUIRED 0x00008000
611 /* Protocol 0xFFF00000 */
612 #define RDMA_CORE_CAP_PROT_IB 0x00100000
613 #define RDMA_CORE_CAP_PROT_ROCE 0x00200000
614 #define RDMA_CORE_CAP_PROT_IWARP 0x00400000
615 #define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000
616 #define RDMA_CORE_CAP_PROT_RAW_PACKET 0x01000000
617 #define RDMA_CORE_CAP_PROT_USNIC 0x02000000
619 #define RDMA_CORE_PORT_IB_GRH_REQUIRED (RDMA_CORE_CAP_IB_GRH_REQUIRED \
620 | RDMA_CORE_CAP_PROT_ROCE \
621 | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP)
623 #define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \
624 | RDMA_CORE_CAP_IB_MAD \
625 | RDMA_CORE_CAP_IB_SMI \
626 | RDMA_CORE_CAP_IB_CM \
627 | RDMA_CORE_CAP_IB_SA \
628 | RDMA_CORE_CAP_AF_IB)
629 #define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \
630 | RDMA_CORE_CAP_IB_MAD \
631 | RDMA_CORE_CAP_IB_CM \
632 | RDMA_CORE_CAP_AF_IB \
633 | RDMA_CORE_CAP_ETH_AH)
634 #define RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP \
635 (RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP \
636 | RDMA_CORE_CAP_IB_MAD \
637 | RDMA_CORE_CAP_IB_CM \
638 | RDMA_CORE_CAP_AF_IB \
639 | RDMA_CORE_CAP_ETH_AH)
640 #define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \
641 | RDMA_CORE_CAP_IW_CM)
642 #define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \
643 | RDMA_CORE_CAP_OPA_MAD)
645 #define RDMA_CORE_PORT_RAW_PACKET (RDMA_CORE_CAP_PROT_RAW_PACKET)
647 #define RDMA_CORE_PORT_USNIC (RDMA_CORE_CAP_PROT_USNIC)
649 struct ib_port_attr {
651 enum ib_port_state state;
653 enum ib_mtu active_mtu;
655 unsigned int ip_gids:1;
656 /* This is the value from PortInfo CapabilityMask, defined by IBA */
675 enum ib_device_modify_flags {
676 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
677 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
680 #define IB_DEVICE_NODE_DESC_MAX 64
682 struct ib_device_modify {
684 char node_desc[IB_DEVICE_NODE_DESC_MAX];
687 enum ib_port_modify_flags {
688 IB_PORT_SHUTDOWN = 1,
689 IB_PORT_INIT_TYPE = (1<<2),
690 IB_PORT_RESET_QKEY_CNTR = (1<<3),
691 IB_PORT_OPA_MASK_CHG = (1<<4)
694 struct ib_port_modify {
695 u32 set_port_cap_mask;
696 u32 clr_port_cap_mask;
704 IB_EVENT_QP_ACCESS_ERR,
708 IB_EVENT_PATH_MIG_ERR,
709 IB_EVENT_DEVICE_FATAL,
710 IB_EVENT_PORT_ACTIVE,
713 IB_EVENT_PKEY_CHANGE,
716 IB_EVENT_SRQ_LIMIT_REACHED,
717 IB_EVENT_QP_LAST_WQE_REACHED,
718 IB_EVENT_CLIENT_REREGISTER,
723 const char *__attribute_const__ ib_event_msg(enum ib_event_type event);
726 struct ib_device *device;
734 enum ib_event_type event;
737 struct ib_event_handler {
738 struct ib_device *device;
739 void (*handler)(struct ib_event_handler *, struct ib_event *);
740 struct list_head list;
743 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
745 (_ptr)->device = _device; \
746 (_ptr)->handler = _handler; \
747 INIT_LIST_HEAD(&(_ptr)->list); \
750 struct ib_global_route {
751 const struct ib_gid_attr *sgid_attr;
760 __be32 version_tclass_flow;
768 union rdma_network_hdr {
771 /* The IB spec states that if it's IPv4, the header
772 * is located in the last 20 bytes of the header.
775 struct iphdr roce4grh;
779 #define IB_QPN_MASK 0xFFFFFF
782 IB_MULTICAST_QPN = 0xffffff
785 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
786 #define IB_MULTICAST_LID_BASE cpu_to_be16(0xC000)
793 IB_RATE_PORT_CURRENT = 0,
794 IB_RATE_2_5_GBPS = 2,
802 IB_RATE_120_GBPS = 10,
803 IB_RATE_14_GBPS = 11,
804 IB_RATE_56_GBPS = 12,
805 IB_RATE_112_GBPS = 13,
806 IB_RATE_168_GBPS = 14,
807 IB_RATE_25_GBPS = 15,
808 IB_RATE_100_GBPS = 16,
809 IB_RATE_200_GBPS = 17,
810 IB_RATE_300_GBPS = 18,
811 IB_RATE_28_GBPS = 19,
812 IB_RATE_50_GBPS = 20,
813 IB_RATE_400_GBPS = 21,
814 IB_RATE_600_GBPS = 22,
818 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
819 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
820 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
821 * @rate: rate to convert.
823 __attribute_const__ int ib_rate_to_mult(enum ib_rate rate);
826 * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
827 * For example, IB_RATE_2_5_GBPS will be converted to 2500.
828 * @rate: rate to convert.
830 __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate);
834 * enum ib_mr_type - memory region type
835 * @IB_MR_TYPE_MEM_REG: memory region that is used for
836 * normal registration
837 * @IB_MR_TYPE_SG_GAPS: memory region that is capable to
838 * register any arbitrary sg lists (without
839 * the normal mr constraints - see
841 * @IB_MR_TYPE_DM: memory region that is used for device
842 * memory registration
843 * @IB_MR_TYPE_USER: memory region that is used for the user-space
845 * @IB_MR_TYPE_DMA: memory region that is used for DMA operations
846 * without address translations (VA=PA)
847 * @IB_MR_TYPE_INTEGRITY: memory region that is used for
848 * data integrity operations
856 IB_MR_TYPE_INTEGRITY,
859 enum ib_mr_status_check {
860 IB_MR_CHECK_SIG_STATUS = 1,
864 * struct ib_mr_status - Memory region status container
866 * @fail_status: Bitmask of MR checks status. For each
867 * failed check a corresponding status bit is set.
868 * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS
871 struct ib_mr_status {
873 struct ib_sig_err sig_err;
877 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
879 * @mult: multiple to convert.
881 __attribute_const__ enum ib_rate mult_to_ib_rate(int mult);
883 enum rdma_ah_attr_type {
884 RDMA_AH_ATTR_TYPE_UNDEFINED,
885 RDMA_AH_ATTR_TYPE_IB,
886 RDMA_AH_ATTR_TYPE_ROCE,
887 RDMA_AH_ATTR_TYPE_OPA,
895 struct roce_ah_attr {
905 struct rdma_ah_attr {
906 struct ib_global_route grh;
911 enum rdma_ah_attr_type type;
913 struct ib_ah_attr ib;
914 struct roce_ah_attr roce;
915 struct opa_ah_attr opa;
923 IB_WC_LOC_EEC_OP_ERR,
928 IB_WC_LOC_ACCESS_ERR,
929 IB_WC_REM_INV_REQ_ERR,
930 IB_WC_REM_ACCESS_ERR,
933 IB_WC_RNR_RETRY_EXC_ERR,
934 IB_WC_LOC_RDD_VIOL_ERR,
935 IB_WC_REM_INV_RD_REQ_ERR,
938 IB_WC_INV_EEC_STATE_ERR,
940 IB_WC_RESP_TIMEOUT_ERR,
944 const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status);
955 IB_WC_MASKED_COMP_SWAP,
956 IB_WC_MASKED_FETCH_ADD,
958 * Set value of IB_WC_RECV so consumers can test if a completion is a
959 * receive by testing (opcode & IB_WC_RECV).
962 IB_WC_RECV_RDMA_WITH_IMM
967 IB_WC_WITH_IMM = (1<<1),
968 IB_WC_WITH_INVALIDATE = (1<<2),
969 IB_WC_IP_CSUM_OK = (1<<3),
970 IB_WC_WITH_SMAC = (1<<4),
971 IB_WC_WITH_VLAN = (1<<5),
972 IB_WC_WITH_NETWORK_HDR_TYPE = (1<<6),
978 struct ib_cqe *wr_cqe;
980 enum ib_wc_status status;
981 enum ib_wc_opcode opcode;
995 u8 port_num; /* valid only for DR SMPs on switches */
1001 enum ib_cq_notify_flags {
1002 IB_CQ_SOLICITED = 1 << 0,
1003 IB_CQ_NEXT_COMP = 1 << 1,
1004 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
1005 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
1014 static inline bool ib_srq_has_cq(enum ib_srq_type srq_type)
1016 return srq_type == IB_SRQT_XRC ||
1017 srq_type == IB_SRQT_TM;
1020 enum ib_srq_attr_mask {
1021 IB_SRQ_MAX_WR = 1 << 0,
1022 IB_SRQ_LIMIT = 1 << 1,
1025 struct ib_srq_attr {
1031 struct ib_srq_init_attr {
1032 void (*event_handler)(struct ib_event *, void *);
1034 struct ib_srq_attr attr;
1035 enum ib_srq_type srq_type;
1041 struct ib_xrcd *xrcd;
1056 u32 max_inline_data;
1059 * Maximum number of rdma_rw_ctx structures in flight at a time.
1060 * ib_create_qp() will calculate the right amount of neededed WRs
1061 * and MRs based on this.
1073 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
1074 * here (and in that order) since the MAD layer uses them as
1075 * indices into a 2-entry table.
1084 IB_QPT_RAW_ETHERTYPE,
1085 IB_QPT_RAW_PACKET = 8,
1089 IB_QPT_DRIVER = 0xFF,
1090 /* Reserve a range for qp types internal to the low level driver.
1091 * These qp types will not be visible at the IB core layer, so the
1092 * IB_QPT_MAX usages should not be affected in the core layer
1094 IB_QPT_RESERVED1 = 0x1000,
1106 enum ib_qp_create_flags {
1107 IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0,
1108 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
1109 IB_QP_CREATE_CROSS_CHANNEL = 1 << 2,
1110 IB_QP_CREATE_MANAGED_SEND = 1 << 3,
1111 IB_QP_CREATE_MANAGED_RECV = 1 << 4,
1112 IB_QP_CREATE_NETIF_QP = 1 << 5,
1113 IB_QP_CREATE_INTEGRITY_EN = 1 << 6,
1114 /* FREE = 1 << 7, */
1115 IB_QP_CREATE_SCATTER_FCS = 1 << 8,
1116 IB_QP_CREATE_CVLAN_STRIPPING = 1 << 9,
1117 IB_QP_CREATE_SOURCE_QPN = 1 << 10,
1118 IB_QP_CREATE_PCI_WRITE_END_PADDING = 1 << 11,
1119 /* reserve bits 26-31 for low level drivers' internal use */
1120 IB_QP_CREATE_RESERVED_START = 1 << 26,
1121 IB_QP_CREATE_RESERVED_END = 1 << 31,
1125 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
1126 * callback to destroy the passed in QP.
1129 struct ib_qp_init_attr {
1130 /* Consumer's event_handler callback must not block */
1131 void (*event_handler)(struct ib_event *, void *);
1134 struct ib_cq *send_cq;
1135 struct ib_cq *recv_cq;
1137 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1138 struct ib_qp_cap cap;
1139 enum ib_sig_type sq_sig_type;
1140 enum ib_qp_type qp_type;
1144 * Only needed for special QP types, or when using the RW API.
1147 struct ib_rwq_ind_table *rwq_ind_tbl;
1151 struct ib_qp_open_attr {
1152 void (*event_handler)(struct ib_event *, void *);
1155 enum ib_qp_type qp_type;
1158 enum ib_rnr_timeout {
1159 IB_RNR_TIMER_655_36 = 0,
1160 IB_RNR_TIMER_000_01 = 1,
1161 IB_RNR_TIMER_000_02 = 2,
1162 IB_RNR_TIMER_000_03 = 3,
1163 IB_RNR_TIMER_000_04 = 4,
1164 IB_RNR_TIMER_000_06 = 5,
1165 IB_RNR_TIMER_000_08 = 6,
1166 IB_RNR_TIMER_000_12 = 7,
1167 IB_RNR_TIMER_000_16 = 8,
1168 IB_RNR_TIMER_000_24 = 9,
1169 IB_RNR_TIMER_000_32 = 10,
1170 IB_RNR_TIMER_000_48 = 11,
1171 IB_RNR_TIMER_000_64 = 12,
1172 IB_RNR_TIMER_000_96 = 13,
1173 IB_RNR_TIMER_001_28 = 14,
1174 IB_RNR_TIMER_001_92 = 15,
1175 IB_RNR_TIMER_002_56 = 16,
1176 IB_RNR_TIMER_003_84 = 17,
1177 IB_RNR_TIMER_005_12 = 18,
1178 IB_RNR_TIMER_007_68 = 19,
1179 IB_RNR_TIMER_010_24 = 20,
1180 IB_RNR_TIMER_015_36 = 21,
1181 IB_RNR_TIMER_020_48 = 22,
1182 IB_RNR_TIMER_030_72 = 23,
1183 IB_RNR_TIMER_040_96 = 24,
1184 IB_RNR_TIMER_061_44 = 25,
1185 IB_RNR_TIMER_081_92 = 26,
1186 IB_RNR_TIMER_122_88 = 27,
1187 IB_RNR_TIMER_163_84 = 28,
1188 IB_RNR_TIMER_245_76 = 29,
1189 IB_RNR_TIMER_327_68 = 30,
1190 IB_RNR_TIMER_491_52 = 31
1193 enum ib_qp_attr_mask {
1195 IB_QP_CUR_STATE = (1<<1),
1196 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
1197 IB_QP_ACCESS_FLAGS = (1<<3),
1198 IB_QP_PKEY_INDEX = (1<<4),
1199 IB_QP_PORT = (1<<5),
1200 IB_QP_QKEY = (1<<6),
1202 IB_QP_PATH_MTU = (1<<8),
1203 IB_QP_TIMEOUT = (1<<9),
1204 IB_QP_RETRY_CNT = (1<<10),
1205 IB_QP_RNR_RETRY = (1<<11),
1206 IB_QP_RQ_PSN = (1<<12),
1207 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
1208 IB_QP_ALT_PATH = (1<<14),
1209 IB_QP_MIN_RNR_TIMER = (1<<15),
1210 IB_QP_SQ_PSN = (1<<16),
1211 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
1212 IB_QP_PATH_MIG_STATE = (1<<18),
1213 IB_QP_CAP = (1<<19),
1214 IB_QP_DEST_QPN = (1<<20),
1215 IB_QP_RESERVED1 = (1<<21),
1216 IB_QP_RESERVED2 = (1<<22),
1217 IB_QP_RESERVED3 = (1<<23),
1218 IB_QP_RESERVED4 = (1<<24),
1219 IB_QP_RATE_LIMIT = (1<<25),
1244 enum ib_qp_state qp_state;
1245 enum ib_qp_state cur_qp_state;
1246 enum ib_mtu path_mtu;
1247 enum ib_mig_state path_mig_state;
1252 int qp_access_flags;
1253 struct ib_qp_cap cap;
1254 struct rdma_ah_attr ah_attr;
1255 struct rdma_ah_attr alt_ah_attr;
1258 u8 en_sqd_async_notify;
1261 u8 max_dest_rd_atomic;
1273 /* These are shared with userspace */
1274 IB_WR_RDMA_WRITE = IB_UVERBS_WR_RDMA_WRITE,
1275 IB_WR_RDMA_WRITE_WITH_IMM = IB_UVERBS_WR_RDMA_WRITE_WITH_IMM,
1276 IB_WR_SEND = IB_UVERBS_WR_SEND,
1277 IB_WR_SEND_WITH_IMM = IB_UVERBS_WR_SEND_WITH_IMM,
1278 IB_WR_RDMA_READ = IB_UVERBS_WR_RDMA_READ,
1279 IB_WR_ATOMIC_CMP_AND_SWP = IB_UVERBS_WR_ATOMIC_CMP_AND_SWP,
1280 IB_WR_ATOMIC_FETCH_AND_ADD = IB_UVERBS_WR_ATOMIC_FETCH_AND_ADD,
1281 IB_WR_LSO = IB_UVERBS_WR_TSO,
1282 IB_WR_SEND_WITH_INV = IB_UVERBS_WR_SEND_WITH_INV,
1283 IB_WR_RDMA_READ_WITH_INV = IB_UVERBS_WR_RDMA_READ_WITH_INV,
1284 IB_WR_LOCAL_INV = IB_UVERBS_WR_LOCAL_INV,
1285 IB_WR_MASKED_ATOMIC_CMP_AND_SWP =
1286 IB_UVERBS_WR_MASKED_ATOMIC_CMP_AND_SWP,
1287 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD =
1288 IB_UVERBS_WR_MASKED_ATOMIC_FETCH_AND_ADD,
1290 /* These are kernel only and can not be issued by userspace */
1291 IB_WR_REG_MR = 0x20,
1292 IB_WR_REG_MR_INTEGRITY,
1294 /* reserve values for low level drivers' internal use.
1295 * These values will not be used at all in the ib core layer.
1297 IB_WR_RESERVED1 = 0xf0,
1309 enum ib_send_flags {
1311 IB_SEND_SIGNALED = (1<<1),
1312 IB_SEND_SOLICITED = (1<<2),
1313 IB_SEND_INLINE = (1<<3),
1314 IB_SEND_IP_CSUM = (1<<4),
1316 /* reserve bits 26-31 for low level drivers' internal use */
1317 IB_SEND_RESERVED_START = (1 << 26),
1318 IB_SEND_RESERVED_END = (1 << 31),
1328 void (*done)(struct ib_cq *cq, struct ib_wc *wc);
1332 struct ib_send_wr *next;
1335 struct ib_cqe *wr_cqe;
1337 struct ib_sge *sg_list;
1339 enum ib_wr_opcode opcode;
1343 u32 invalidate_rkey;
1348 struct ib_send_wr wr;
1353 static inline const struct ib_rdma_wr *rdma_wr(const struct ib_send_wr *wr)
1355 return container_of(wr, struct ib_rdma_wr, wr);
1358 struct ib_atomic_wr {
1359 struct ib_send_wr wr;
1363 u64 compare_add_mask;
1368 static inline const struct ib_atomic_wr *atomic_wr(const struct ib_send_wr *wr)
1370 return container_of(wr, struct ib_atomic_wr, wr);
1374 struct ib_send_wr wr;
1381 u16 pkey_index; /* valid for GSI only */
1382 u8 port_num; /* valid for DR SMPs on switch only */
1385 static inline const struct ib_ud_wr *ud_wr(const struct ib_send_wr *wr)
1387 return container_of(wr, struct ib_ud_wr, wr);
1391 struct ib_send_wr wr;
1397 static inline const struct ib_reg_wr *reg_wr(const struct ib_send_wr *wr)
1399 return container_of(wr, struct ib_reg_wr, wr);
1403 struct ib_recv_wr *next;
1406 struct ib_cqe *wr_cqe;
1408 struct ib_sge *sg_list;
1412 enum ib_access_flags {
1413 IB_ACCESS_LOCAL_WRITE = IB_UVERBS_ACCESS_LOCAL_WRITE,
1414 IB_ACCESS_REMOTE_WRITE = IB_UVERBS_ACCESS_REMOTE_WRITE,
1415 IB_ACCESS_REMOTE_READ = IB_UVERBS_ACCESS_REMOTE_READ,
1416 IB_ACCESS_REMOTE_ATOMIC = IB_UVERBS_ACCESS_REMOTE_ATOMIC,
1417 IB_ACCESS_MW_BIND = IB_UVERBS_ACCESS_MW_BIND,
1418 IB_ZERO_BASED = IB_UVERBS_ACCESS_ZERO_BASED,
1419 IB_ACCESS_ON_DEMAND = IB_UVERBS_ACCESS_ON_DEMAND,
1420 IB_ACCESS_HUGETLB = IB_UVERBS_ACCESS_HUGETLB,
1422 IB_ACCESS_SUPPORTED = ((IB_ACCESS_HUGETLB << 1) - 1)
1426 * XXX: these are apparently used for ->rereg_user_mr, no idea why they
1427 * are hidden here instead of a uapi header!
1429 enum ib_mr_rereg_flags {
1430 IB_MR_REREG_TRANS = 1,
1431 IB_MR_REREG_PD = (1<<1),
1432 IB_MR_REREG_ACCESS = (1<<2),
1433 IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
1436 struct ib_fmr_attr {
1444 enum rdma_remove_reason {
1446 * Userspace requested uobject deletion or initial try
1447 * to remove uobject via cleanup. Call could fail
1449 RDMA_REMOVE_DESTROY,
1450 /* Context deletion. This call should delete the actual object itself */
1452 /* Driver is being hot-unplugged. This call should delete the actual object itself */
1453 RDMA_REMOVE_DRIVER_REMOVE,
1454 /* uobj is being cleaned-up before being committed */
1458 struct ib_rdmacg_object {
1459 #ifdef CONFIG_CGROUP_RDMA
1460 struct rdma_cgroup *cg; /* owner rdma cgroup */
1464 struct ib_ucontext {
1465 struct ib_device *device;
1466 struct ib_uverbs_file *ufile;
1468 * 'closing' can be read by the driver only during a destroy callback,
1469 * it is set when we are closing the file descriptor and indicates
1470 * that mm_sem may be locked.
1474 bool cleanup_retryable;
1476 struct ib_rdmacg_object cg_obj;
1478 * Implementation details of the RDMA core, don't use in drivers:
1480 struct rdma_restrack_entry res;
1481 struct xarray mmap_xa;
1485 u64 user_handle; /* handle given to us by userspace */
1486 /* ufile & ucontext owning this object */
1487 struct ib_uverbs_file *ufile;
1488 /* FIXME, save memory: ufile->context == context */
1489 struct ib_ucontext *context; /* associated user context */
1490 void *object; /* containing object */
1491 struct list_head list; /* link to context's list */
1492 struct ib_rdmacg_object cg_obj; /* rdmacg object */
1493 int id; /* index into kernel idr */
1495 atomic_t usecnt; /* protects exclusive access */
1496 struct rcu_head rcu; /* kfree_rcu() overhead */
1498 const struct uverbs_api_object *uapi_object;
1502 const void __user *inbuf;
1503 void __user *outbuf;
1511 struct ib_device *device;
1512 struct ib_uobject *uobject;
1513 atomic_t usecnt; /* count all resources */
1515 u32 unsafe_global_rkey;
1518 * Implementation details of the RDMA core, don't use in drivers:
1520 struct ib_mr *__internal_mr;
1521 struct rdma_restrack_entry res;
1525 struct ib_device *device;
1526 atomic_t usecnt; /* count all exposed resources */
1527 struct inode *inode;
1529 struct mutex tgt_qp_mutex;
1530 struct list_head tgt_qp_list;
1534 struct ib_device *device;
1536 struct ib_uobject *uobject;
1537 const struct ib_gid_attr *sgid_attr;
1538 enum rdma_ah_attr_type type;
1541 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
1543 enum ib_poll_context {
1544 IB_POLL_DIRECT, /* caller context, no hw completions */
1545 IB_POLL_SOFTIRQ, /* poll from softirq context */
1546 IB_POLL_WORKQUEUE, /* poll from workqueue */
1547 IB_POLL_UNBOUND_WORKQUEUE, /* poll from unbound workqueue */
1551 struct ib_device *device;
1552 struct ib_ucq_object *uobject;
1553 ib_comp_handler comp_handler;
1554 void (*event_handler)(struct ib_event *, void *);
1557 atomic_t usecnt; /* count number of work queues */
1558 enum ib_poll_context poll_ctx;
1561 struct irq_poll iop;
1562 struct work_struct work;
1564 struct workqueue_struct *comp_wq;
1567 /* updated only by trace points */
1572 * Implementation details of the RDMA core, don't use in drivers:
1574 struct rdma_restrack_entry res;
1578 struct ib_device *device;
1580 struct ib_usrq_object *uobject;
1581 void (*event_handler)(struct ib_event *, void *);
1583 enum ib_srq_type srq_type;
1590 struct ib_xrcd *xrcd;
1597 enum ib_raw_packet_caps {
1598 /* Strip cvlan from incoming packet and report it in the matching work
1599 * completion is supported.
1601 IB_RAW_PACKET_CAP_CVLAN_STRIPPING = (1 << 0),
1602 /* Scatter FCS field of an incoming packet to host memory is supported.
1604 IB_RAW_PACKET_CAP_SCATTER_FCS = (1 << 1),
1605 /* Checksum offloads are supported (for both send and receive). */
1606 IB_RAW_PACKET_CAP_IP_CSUM = (1 << 2),
1607 /* When a packet is received for an RQ with no receive WQEs, the
1608 * packet processing is delayed.
1610 IB_RAW_PACKET_CAP_DELAY_DROP = (1 << 3),
1624 struct ib_device *device;
1625 struct ib_uwq_object *uobject;
1627 void (*event_handler)(struct ib_event *, void *);
1631 enum ib_wq_state state;
1632 enum ib_wq_type wq_type;
1637 IB_WQ_FLAGS_CVLAN_STRIPPING = 1 << 0,
1638 IB_WQ_FLAGS_SCATTER_FCS = 1 << 1,
1639 IB_WQ_FLAGS_DELAY_DROP = 1 << 2,
1640 IB_WQ_FLAGS_PCI_WRITE_END_PADDING = 1 << 3,
1643 struct ib_wq_init_attr {
1645 enum ib_wq_type wq_type;
1649 void (*event_handler)(struct ib_event *, void *);
1650 u32 create_flags; /* Use enum ib_wq_flags */
1653 enum ib_wq_attr_mask {
1654 IB_WQ_STATE = 1 << 0,
1655 IB_WQ_CUR_STATE = 1 << 1,
1656 IB_WQ_FLAGS = 1 << 2,
1660 enum ib_wq_state wq_state;
1661 enum ib_wq_state curr_wq_state;
1662 u32 flags; /* Use enum ib_wq_flags */
1663 u32 flags_mask; /* Use enum ib_wq_flags */
1666 struct ib_rwq_ind_table {
1667 struct ib_device *device;
1668 struct ib_uobject *uobject;
1671 u32 log_ind_tbl_size;
1672 struct ib_wq **ind_tbl;
1675 struct ib_rwq_ind_table_init_attr {
1676 u32 log_ind_tbl_size;
1677 /* Each entry is a pointer to Receive Work Queue */
1678 struct ib_wq **ind_tbl;
1681 enum port_pkey_state {
1682 IB_PORT_PKEY_NOT_VALID = 0,
1683 IB_PORT_PKEY_VALID = 1,
1684 IB_PORT_PKEY_LISTED = 2,
1687 struct ib_qp_security;
1689 struct ib_port_pkey {
1690 enum port_pkey_state state;
1693 struct list_head qp_list;
1694 struct list_head to_error_list;
1695 struct ib_qp_security *sec;
1698 struct ib_ports_pkeys {
1699 struct ib_port_pkey main;
1700 struct ib_port_pkey alt;
1703 struct ib_qp_security {
1705 struct ib_device *dev;
1706 /* Hold this mutex when changing port and pkey settings. */
1708 struct ib_ports_pkeys *ports_pkeys;
1709 /* A list of all open shared QP handles. Required to enforce security
1710 * properly for all users of a shared QP.
1712 struct list_head shared_qp_list;
1715 atomic_t error_list_count;
1716 struct completion error_complete;
1717 int error_comps_pending;
1721 * @max_write_sge: Maximum SGE elements per RDMA WRITE request.
1722 * @max_read_sge: Maximum SGE elements per RDMA READ request.
1725 struct ib_device *device;
1727 struct ib_cq *send_cq;
1728 struct ib_cq *recv_cq;
1731 struct list_head rdma_mrs;
1732 struct list_head sig_mrs;
1734 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1735 struct list_head xrcd_list;
1737 /* count times opened, mcast attaches, flow attaches */
1739 struct list_head open_list;
1740 struct ib_qp *real_qp;
1741 struct ib_uqp_object *uobject;
1742 void (*event_handler)(struct ib_event *, void *);
1744 /* sgid_attrs associated with the AV's */
1745 const struct ib_gid_attr *av_sgid_attr;
1746 const struct ib_gid_attr *alt_path_sgid_attr;
1750 enum ib_qp_type qp_type;
1751 struct ib_rwq_ind_table *rwq_ind_tbl;
1752 struct ib_qp_security *qp_sec;
1757 * Implementation details of the RDMA core, don't use in drivers:
1759 struct rdma_restrack_entry res;
1761 /* The counter the qp is bind to */
1762 struct rdma_counter *counter;
1766 struct ib_device *device;
1769 struct ib_uobject *uobject;
1774 struct ib_device *device;
1780 unsigned int page_size;
1781 enum ib_mr_type type;
1784 struct ib_uobject *uobject; /* user */
1785 struct list_head qp_entry; /* FR */
1789 struct ib_sig_attrs *sig_attrs; /* only for IB_MR_TYPE_INTEGRITY MRs */
1791 * Implementation details of the RDMA core, don't use in drivers:
1793 struct rdma_restrack_entry res;
1797 struct ib_device *device;
1799 struct ib_uobject *uobject;
1801 enum ib_mw_type type;
1805 struct ib_device *device;
1807 struct list_head list;
1812 /* Supported steering options */
1813 enum ib_flow_attr_type {
1814 /* steering according to rule specifications */
1815 IB_FLOW_ATTR_NORMAL = 0x0,
1816 /* default unicast and multicast rule -
1817 * receive all Eth traffic which isn't steered to any QP
1819 IB_FLOW_ATTR_ALL_DEFAULT = 0x1,
1820 /* default multicast rule -
1821 * receive all Eth multicast traffic which isn't steered to any QP
1823 IB_FLOW_ATTR_MC_DEFAULT = 0x2,
1824 /* sniffer rule - receive all port traffic */
1825 IB_FLOW_ATTR_SNIFFER = 0x3
1828 /* Supported steering header types */
1829 enum ib_flow_spec_type {
1831 IB_FLOW_SPEC_ETH = 0x20,
1832 IB_FLOW_SPEC_IB = 0x22,
1834 IB_FLOW_SPEC_IPV4 = 0x30,
1835 IB_FLOW_SPEC_IPV6 = 0x31,
1836 IB_FLOW_SPEC_ESP = 0x34,
1838 IB_FLOW_SPEC_TCP = 0x40,
1839 IB_FLOW_SPEC_UDP = 0x41,
1840 IB_FLOW_SPEC_VXLAN_TUNNEL = 0x50,
1841 IB_FLOW_SPEC_GRE = 0x51,
1842 IB_FLOW_SPEC_MPLS = 0x60,
1843 IB_FLOW_SPEC_INNER = 0x100,
1845 IB_FLOW_SPEC_ACTION_TAG = 0x1000,
1846 IB_FLOW_SPEC_ACTION_DROP = 0x1001,
1847 IB_FLOW_SPEC_ACTION_HANDLE = 0x1002,
1848 IB_FLOW_SPEC_ACTION_COUNT = 0x1003,
1850 #define IB_FLOW_SPEC_LAYER_MASK 0xF0
1851 #define IB_FLOW_SPEC_SUPPORT_LAYERS 10
1853 /* Flow steering rule priority is set according to it's domain.
1854 * Lower domain value means higher priority.
1856 enum ib_flow_domain {
1857 IB_FLOW_DOMAIN_USER,
1858 IB_FLOW_DOMAIN_ETHTOOL,
1861 IB_FLOW_DOMAIN_NUM /* Must be last */
1864 enum ib_flow_flags {
1865 IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */
1866 IB_FLOW_ATTR_FLAGS_EGRESS = 1UL << 2, /* Egress flow */
1867 IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 3 /* Must be last */
1870 struct ib_flow_eth_filter {
1879 struct ib_flow_spec_eth {
1882 struct ib_flow_eth_filter val;
1883 struct ib_flow_eth_filter mask;
1886 struct ib_flow_ib_filter {
1893 struct ib_flow_spec_ib {
1896 struct ib_flow_ib_filter val;
1897 struct ib_flow_ib_filter mask;
1900 /* IPv4 header flags */
1901 enum ib_ipv4_flags {
1902 IB_IPV4_DONT_FRAG = 0x2, /* Don't enable packet fragmentation */
1903 IB_IPV4_MORE_FRAG = 0X4 /* For All fragmented packets except the
1904 last have this flag set */
1907 struct ib_flow_ipv4_filter {
1918 struct ib_flow_spec_ipv4 {
1921 struct ib_flow_ipv4_filter val;
1922 struct ib_flow_ipv4_filter mask;
1925 struct ib_flow_ipv6_filter {
1936 struct ib_flow_spec_ipv6 {
1939 struct ib_flow_ipv6_filter val;
1940 struct ib_flow_ipv6_filter mask;
1943 struct ib_flow_tcp_udp_filter {
1950 struct ib_flow_spec_tcp_udp {
1953 struct ib_flow_tcp_udp_filter val;
1954 struct ib_flow_tcp_udp_filter mask;
1957 struct ib_flow_tunnel_filter {
1962 /* ib_flow_spec_tunnel describes the Vxlan tunnel
1963 * the tunnel_id from val has the vni value
1965 struct ib_flow_spec_tunnel {
1968 struct ib_flow_tunnel_filter val;
1969 struct ib_flow_tunnel_filter mask;
1972 struct ib_flow_esp_filter {
1979 struct ib_flow_spec_esp {
1982 struct ib_flow_esp_filter val;
1983 struct ib_flow_esp_filter mask;
1986 struct ib_flow_gre_filter {
1987 __be16 c_ks_res0_ver;
1994 struct ib_flow_spec_gre {
1997 struct ib_flow_gre_filter val;
1998 struct ib_flow_gre_filter mask;
2001 struct ib_flow_mpls_filter {
2007 struct ib_flow_spec_mpls {
2010 struct ib_flow_mpls_filter val;
2011 struct ib_flow_mpls_filter mask;
2014 struct ib_flow_spec_action_tag {
2015 enum ib_flow_spec_type type;
2020 struct ib_flow_spec_action_drop {
2021 enum ib_flow_spec_type type;
2025 struct ib_flow_spec_action_handle {
2026 enum ib_flow_spec_type type;
2028 struct ib_flow_action *act;
2031 enum ib_counters_description {
2036 struct ib_flow_spec_action_count {
2037 enum ib_flow_spec_type type;
2039 struct ib_counters *counters;
2042 union ib_flow_spec {
2047 struct ib_flow_spec_eth eth;
2048 struct ib_flow_spec_ib ib;
2049 struct ib_flow_spec_ipv4 ipv4;
2050 struct ib_flow_spec_tcp_udp tcp_udp;
2051 struct ib_flow_spec_ipv6 ipv6;
2052 struct ib_flow_spec_tunnel tunnel;
2053 struct ib_flow_spec_esp esp;
2054 struct ib_flow_spec_gre gre;
2055 struct ib_flow_spec_mpls mpls;
2056 struct ib_flow_spec_action_tag flow_tag;
2057 struct ib_flow_spec_action_drop drop;
2058 struct ib_flow_spec_action_handle action;
2059 struct ib_flow_spec_action_count flow_count;
2062 struct ib_flow_attr {
2063 enum ib_flow_attr_type type;
2069 union ib_flow_spec flows[];
2074 struct ib_device *device;
2075 struct ib_uobject *uobject;
2078 enum ib_flow_action_type {
2079 IB_FLOW_ACTION_UNSPECIFIED,
2080 IB_FLOW_ACTION_ESP = 1,
2083 struct ib_flow_action_attrs_esp_keymats {
2084 enum ib_uverbs_flow_action_esp_keymat protocol;
2086 struct ib_uverbs_flow_action_esp_keymat_aes_gcm aes_gcm;
2090 struct ib_flow_action_attrs_esp_replays {
2091 enum ib_uverbs_flow_action_esp_replay protocol;
2093 struct ib_uverbs_flow_action_esp_replay_bmp bmp;
2097 enum ib_flow_action_attrs_esp_flags {
2098 /* All user-space flags at the top: Use enum ib_uverbs_flow_action_esp_flags
2099 * This is done in order to share the same flags between user-space and
2100 * kernel and spare an unnecessary translation.
2104 IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED = 1ULL << 32,
2105 IB_FLOW_ACTION_ESP_FLAGS_MOD_ESP_ATTRS = 1ULL << 33,
2108 struct ib_flow_spec_list {
2109 struct ib_flow_spec_list *next;
2110 union ib_flow_spec spec;
2113 struct ib_flow_action_attrs_esp {
2114 struct ib_flow_action_attrs_esp_keymats *keymat;
2115 struct ib_flow_action_attrs_esp_replays *replay;
2116 struct ib_flow_spec_list *encap;
2117 /* Used only if IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED is enabled.
2118 * Value of 0 is a valid value.
2124 /* Use enum ib_flow_action_attrs_esp_flags */
2126 u64 hard_limit_pkts;
2129 struct ib_flow_action {
2130 struct ib_device *device;
2131 struct ib_uobject *uobject;
2132 enum ib_flow_action_type type;
2139 enum ib_process_mad_flags {
2140 IB_MAD_IGNORE_MKEY = 1,
2141 IB_MAD_IGNORE_BKEY = 2,
2142 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
2145 enum ib_mad_result {
2146 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
2147 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
2148 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
2149 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
2152 struct ib_port_cache {
2154 struct ib_pkey_cache *pkey;
2155 struct ib_gid_table *gid;
2157 enum ib_port_state port_state;
2160 struct ib_port_immutable {
2167 struct ib_port_data {
2168 struct ib_device *ib_dev;
2170 struct ib_port_immutable immutable;
2172 spinlock_t pkey_list_lock;
2173 struct list_head pkey_list;
2175 struct ib_port_cache cache;
2177 spinlock_t netdev_lock;
2178 struct net_device __rcu *netdev;
2179 struct hlist_node ndev_hash_link;
2180 struct rdma_port_counter port_counter;
2181 struct rdma_hw_stats *hw_stats;
2184 /* rdma netdev type - specifies protocol type */
2185 enum rdma_netdev_t {
2186 RDMA_NETDEV_OPA_VNIC,
2191 * struct rdma_netdev - rdma netdev
2192 * For cases where netstack interfacing is required.
2194 struct rdma_netdev {
2196 struct ib_device *hca;
2200 * cleanup function must be specified.
2201 * FIXME: This is only used for OPA_VNIC and that usage should be
2204 void (*free_rdma_netdev)(struct net_device *netdev);
2206 /* control functions */
2207 void (*set_id)(struct net_device *netdev, int id);
2209 int (*send)(struct net_device *dev, struct sk_buff *skb,
2210 struct ib_ah *address, u32 dqpn);
2212 int (*attach_mcast)(struct net_device *dev, struct ib_device *hca,
2213 union ib_gid *gid, u16 mlid,
2214 int set_qkey, u32 qkey);
2215 int (*detach_mcast)(struct net_device *dev, struct ib_device *hca,
2216 union ib_gid *gid, u16 mlid);
2219 struct rdma_netdev_alloc_params {
2225 int (*initialize_rdma_netdev)(struct ib_device *device, u8 port_num,
2226 struct net_device *netdev, void *param);
2229 struct ib_odp_counters {
2231 atomic64_t invalidations;
2234 struct ib_counters {
2235 struct ib_device *device;
2236 struct ib_uobject *uobject;
2237 /* num of objects attached */
2241 struct ib_counters_read_attr {
2244 u32 flags; /* use enum ib_read_counters_flags */
2247 struct uverbs_attr_bundle;
2249 struct iw_cm_conn_param;
2251 #define INIT_RDMA_OBJ_SIZE(ib_struct, drv_struct, member) \
2252 .size_##ib_struct = \
2253 (sizeof(struct drv_struct) + \
2254 BUILD_BUG_ON_ZERO(offsetof(struct drv_struct, member)) + \
2255 BUILD_BUG_ON_ZERO( \
2256 !__same_type(((struct drv_struct *)NULL)->member, \
2259 #define rdma_zalloc_drv_obj_gfp(ib_dev, ib_type, gfp) \
2260 ((struct ib_type *)kzalloc(ib_dev->ops.size_##ib_type, gfp))
2262 #define rdma_zalloc_drv_obj(ib_dev, ib_type) \
2263 rdma_zalloc_drv_obj_gfp(ib_dev, ib_type, GFP_KERNEL)
2265 #define DECLARE_RDMA_OBJ_SIZE(ib_struct) size_t size_##ib_struct
2267 struct rdma_user_mmap_entry {
2269 struct ib_ucontext *ucontext;
2270 unsigned long start_pgoff;
2272 bool driver_removed;
2275 /* Return the offset (in bytes) the user should pass to libc's mmap() */
2277 rdma_user_mmap_get_offset(const struct rdma_user_mmap_entry *entry)
2279 return (u64)entry->start_pgoff << PAGE_SHIFT;
2283 * struct ib_device_ops - InfiniBand device operations
2284 * This structure defines all the InfiniBand device operations, providers will
2285 * need to define the supported operations, otherwise they will be set to null.
2287 struct ib_device_ops {
2288 struct module *owner;
2289 enum rdma_driver_id driver_id;
2291 unsigned int uverbs_no_driver_id_binding:1;
2293 int (*post_send)(struct ib_qp *qp, const struct ib_send_wr *send_wr,
2294 const struct ib_send_wr **bad_send_wr);
2295 int (*post_recv)(struct ib_qp *qp, const struct ib_recv_wr *recv_wr,
2296 const struct ib_recv_wr **bad_recv_wr);
2297 void (*drain_rq)(struct ib_qp *qp);
2298 void (*drain_sq)(struct ib_qp *qp);
2299 int (*poll_cq)(struct ib_cq *cq, int num_entries, struct ib_wc *wc);
2300 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
2301 int (*req_notify_cq)(struct ib_cq *cq, enum ib_cq_notify_flags flags);
2302 int (*req_ncomp_notif)(struct ib_cq *cq, int wc_cnt);
2303 int (*post_srq_recv)(struct ib_srq *srq,
2304 const struct ib_recv_wr *recv_wr,
2305 const struct ib_recv_wr **bad_recv_wr);
2306 int (*process_mad)(struct ib_device *device, int process_mad_flags,
2307 u8 port_num, const struct ib_wc *in_wc,
2308 const struct ib_grh *in_grh,
2309 const struct ib_mad *in_mad, struct ib_mad *out_mad,
2310 size_t *out_mad_size, u16 *out_mad_pkey_index);
2311 int (*query_device)(struct ib_device *device,
2312 struct ib_device_attr *device_attr,
2313 struct ib_udata *udata);
2314 int (*modify_device)(struct ib_device *device, int device_modify_mask,
2315 struct ib_device_modify *device_modify);
2316 void (*get_dev_fw_str)(struct ib_device *device, char *str);
2317 const struct cpumask *(*get_vector_affinity)(struct ib_device *ibdev,
2319 int (*query_port)(struct ib_device *device, u8 port_num,
2320 struct ib_port_attr *port_attr);
2321 int (*modify_port)(struct ib_device *device, u8 port_num,
2322 int port_modify_mask,
2323 struct ib_port_modify *port_modify);
2325 * The following mandatory functions are used only at device
2326 * registration. Keep functions such as these at the end of this
2327 * structure to avoid cache line misses when accessing struct ib_device
2330 int (*get_port_immutable)(struct ib_device *device, u8 port_num,
2331 struct ib_port_immutable *immutable);
2332 enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
2335 * When calling get_netdev, the HW vendor's driver should return the
2336 * net device of device @device at port @port_num or NULL if such
2337 * a net device doesn't exist. The vendor driver should call dev_hold
2338 * on this net device. The HW vendor's device driver must guarantee
2339 * that this function returns NULL before the net device has finished
2340 * NETDEV_UNREGISTER state.
2342 struct net_device *(*get_netdev)(struct ib_device *device, u8 port_num);
2344 * rdma netdev operation
2346 * Driver implementing alloc_rdma_netdev or rdma_netdev_get_params
2347 * must return -EOPNOTSUPP if it doesn't support the specified type.
2349 struct net_device *(*alloc_rdma_netdev)(
2350 struct ib_device *device, u8 port_num, enum rdma_netdev_t type,
2351 const char *name, unsigned char name_assign_type,
2352 void (*setup)(struct net_device *));
2354 int (*rdma_netdev_get_params)(struct ib_device *device, u8 port_num,
2355 enum rdma_netdev_t type,
2356 struct rdma_netdev_alloc_params *params);
2358 * query_gid should be return GID value for @device, when @port_num
2359 * link layer is either IB or iWarp. It is no-op if @port_num port
2360 * is RoCE link layer.
2362 int (*query_gid)(struct ib_device *device, u8 port_num, int index,
2365 * When calling add_gid, the HW vendor's driver should add the gid
2366 * of device of port at gid index available at @attr. Meta-info of
2367 * that gid (for example, the network device related to this gid) is
2368 * available at @attr. @context allows the HW vendor driver to store
2369 * extra information together with a GID entry. The HW vendor driver may
2370 * allocate memory to contain this information and store it in @context
2371 * when a new GID entry is written to. Params are consistent until the
2372 * next call of add_gid or delete_gid. The function should return 0 on
2373 * success or error otherwise. The function could be called
2374 * concurrently for different ports. This function is only called when
2375 * roce_gid_table is used.
2377 int (*add_gid)(const struct ib_gid_attr *attr, void **context);
2379 * When calling del_gid, the HW vendor's driver should delete the
2380 * gid of device @device at gid index gid_index of port port_num
2381 * available in @attr.
2382 * Upon the deletion of a GID entry, the HW vendor must free any
2383 * allocated memory. The caller will clear @context afterwards.
2384 * This function is only called when roce_gid_table is used.
2386 int (*del_gid)(const struct ib_gid_attr *attr, void **context);
2387 int (*query_pkey)(struct ib_device *device, u8 port_num, u16 index,
2389 int (*alloc_ucontext)(struct ib_ucontext *context,
2390 struct ib_udata *udata);
2391 void (*dealloc_ucontext)(struct ib_ucontext *context);
2392 int (*mmap)(struct ib_ucontext *context, struct vm_area_struct *vma);
2394 * This will be called once refcount of an entry in mmap_xa reaches
2395 * zero. The type of the memory that was mapped may differ between
2396 * entries and is opaque to the rdma_user_mmap interface.
2397 * Therefore needs to be implemented by the driver in mmap_free.
2399 void (*mmap_free)(struct rdma_user_mmap_entry *entry);
2400 void (*disassociate_ucontext)(struct ib_ucontext *ibcontext);
2401 int (*alloc_pd)(struct ib_pd *pd, struct ib_udata *udata);
2402 void (*dealloc_pd)(struct ib_pd *pd, struct ib_udata *udata);
2403 int (*create_ah)(struct ib_ah *ah, struct rdma_ah_attr *ah_attr,
2404 u32 flags, struct ib_udata *udata);
2405 int (*modify_ah)(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
2406 int (*query_ah)(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
2407 void (*destroy_ah)(struct ib_ah *ah, u32 flags);
2408 int (*create_srq)(struct ib_srq *srq,
2409 struct ib_srq_init_attr *srq_init_attr,
2410 struct ib_udata *udata);
2411 int (*modify_srq)(struct ib_srq *srq, struct ib_srq_attr *srq_attr,
2412 enum ib_srq_attr_mask srq_attr_mask,
2413 struct ib_udata *udata);
2414 int (*query_srq)(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
2415 void (*destroy_srq)(struct ib_srq *srq, struct ib_udata *udata);
2416 struct ib_qp *(*create_qp)(struct ib_pd *pd,
2417 struct ib_qp_init_attr *qp_init_attr,
2418 struct ib_udata *udata);
2419 int (*modify_qp)(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
2420 int qp_attr_mask, struct ib_udata *udata);
2421 int (*query_qp)(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
2422 int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr);
2423 int (*destroy_qp)(struct ib_qp *qp, struct ib_udata *udata);
2424 int (*create_cq)(struct ib_cq *cq, const struct ib_cq_init_attr *attr,
2425 struct ib_udata *udata);
2426 int (*modify_cq)(struct ib_cq *cq, u16 cq_count, u16 cq_period);
2427 void (*destroy_cq)(struct ib_cq *cq, struct ib_udata *udata);
2428 int (*resize_cq)(struct ib_cq *cq, int cqe, struct ib_udata *udata);
2429 struct ib_mr *(*get_dma_mr)(struct ib_pd *pd, int mr_access_flags);
2430 struct ib_mr *(*reg_user_mr)(struct ib_pd *pd, u64 start, u64 length,
2431 u64 virt_addr, int mr_access_flags,
2432 struct ib_udata *udata);
2433 int (*rereg_user_mr)(struct ib_mr *mr, int flags, u64 start, u64 length,
2434 u64 virt_addr, int mr_access_flags,
2435 struct ib_pd *pd, struct ib_udata *udata);
2436 int (*dereg_mr)(struct ib_mr *mr, struct ib_udata *udata);
2437 struct ib_mr *(*alloc_mr)(struct ib_pd *pd, enum ib_mr_type mr_type,
2438 u32 max_num_sg, struct ib_udata *udata);
2439 struct ib_mr *(*alloc_mr_integrity)(struct ib_pd *pd,
2440 u32 max_num_data_sg,
2441 u32 max_num_meta_sg);
2442 int (*advise_mr)(struct ib_pd *pd,
2443 enum ib_uverbs_advise_mr_advice advice, u32 flags,
2444 struct ib_sge *sg_list, u32 num_sge,
2445 struct uverbs_attr_bundle *attrs);
2446 int (*map_mr_sg)(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
2447 unsigned int *sg_offset);
2448 int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
2449 struct ib_mr_status *mr_status);
2450 struct ib_mw *(*alloc_mw)(struct ib_pd *pd, enum ib_mw_type type,
2451 struct ib_udata *udata);
2452 int (*dealloc_mw)(struct ib_mw *mw);
2453 struct ib_fmr *(*alloc_fmr)(struct ib_pd *pd, int mr_access_flags,
2454 struct ib_fmr_attr *fmr_attr);
2455 int (*map_phys_fmr)(struct ib_fmr *fmr, u64 *page_list, int list_len,
2457 int (*unmap_fmr)(struct list_head *fmr_list);
2458 int (*dealloc_fmr)(struct ib_fmr *fmr);
2459 int (*attach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
2460 int (*detach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
2461 struct ib_xrcd *(*alloc_xrcd)(struct ib_device *device,
2462 struct ib_udata *udata);
2463 int (*dealloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata);
2464 struct ib_flow *(*create_flow)(struct ib_qp *qp,
2465 struct ib_flow_attr *flow_attr,
2466 int domain, struct ib_udata *udata);
2467 int (*destroy_flow)(struct ib_flow *flow_id);
2468 struct ib_flow_action *(*create_flow_action_esp)(
2469 struct ib_device *device,
2470 const struct ib_flow_action_attrs_esp *attr,
2471 struct uverbs_attr_bundle *attrs);
2472 int (*destroy_flow_action)(struct ib_flow_action *action);
2473 int (*modify_flow_action_esp)(
2474 struct ib_flow_action *action,
2475 const struct ib_flow_action_attrs_esp *attr,
2476 struct uverbs_attr_bundle *attrs);
2477 int (*set_vf_link_state)(struct ib_device *device, int vf, u8 port,
2479 int (*get_vf_config)(struct ib_device *device, int vf, u8 port,
2480 struct ifla_vf_info *ivf);
2481 int (*get_vf_stats)(struct ib_device *device, int vf, u8 port,
2482 struct ifla_vf_stats *stats);
2483 int (*get_vf_guid)(struct ib_device *device, int vf, u8 port,
2484 struct ifla_vf_guid *node_guid,
2485 struct ifla_vf_guid *port_guid);
2486 int (*set_vf_guid)(struct ib_device *device, int vf, u8 port, u64 guid,
2488 struct ib_wq *(*create_wq)(struct ib_pd *pd,
2489 struct ib_wq_init_attr *init_attr,
2490 struct ib_udata *udata);
2491 void (*destroy_wq)(struct ib_wq *wq, struct ib_udata *udata);
2492 int (*modify_wq)(struct ib_wq *wq, struct ib_wq_attr *attr,
2493 u32 wq_attr_mask, struct ib_udata *udata);
2494 struct ib_rwq_ind_table *(*create_rwq_ind_table)(
2495 struct ib_device *device,
2496 struct ib_rwq_ind_table_init_attr *init_attr,
2497 struct ib_udata *udata);
2498 int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table);
2499 struct ib_dm *(*alloc_dm)(struct ib_device *device,
2500 struct ib_ucontext *context,
2501 struct ib_dm_alloc_attr *attr,
2502 struct uverbs_attr_bundle *attrs);
2503 int (*dealloc_dm)(struct ib_dm *dm, struct uverbs_attr_bundle *attrs);
2504 struct ib_mr *(*reg_dm_mr)(struct ib_pd *pd, struct ib_dm *dm,
2505 struct ib_dm_mr_attr *attr,
2506 struct uverbs_attr_bundle *attrs);
2507 struct ib_counters *(*create_counters)(
2508 struct ib_device *device, struct uverbs_attr_bundle *attrs);
2509 int (*destroy_counters)(struct ib_counters *counters);
2510 int (*read_counters)(struct ib_counters *counters,
2511 struct ib_counters_read_attr *counters_read_attr,
2512 struct uverbs_attr_bundle *attrs);
2513 int (*map_mr_sg_pi)(struct ib_mr *mr, struct scatterlist *data_sg,
2514 int data_sg_nents, unsigned int *data_sg_offset,
2515 struct scatterlist *meta_sg, int meta_sg_nents,
2516 unsigned int *meta_sg_offset);
2519 * alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the
2520 * driver initialized data. The struct is kfree()'ed by the sysfs
2521 * core when the device is removed. A lifespan of -1 in the return
2522 * struct tells the core to set a default lifespan.
2524 struct rdma_hw_stats *(*alloc_hw_stats)(struct ib_device *device,
2527 * get_hw_stats - Fill in the counter value(s) in the stats struct.
2528 * @index - The index in the value array we wish to have updated, or
2529 * num_counters if we want all stats updated
2531 * < 0 - Error, no counters updated
2532 * index - Updated the single counter pointed to by index
2533 * num_counters - Updated all counters (will reset the timestamp
2534 * and prevent further calls for lifespan milliseconds)
2535 * Drivers are allowed to update all counters in leiu of just the
2536 * one given in index at their option
2538 int (*get_hw_stats)(struct ib_device *device,
2539 struct rdma_hw_stats *stats, u8 port, int index);
2541 * This function is called once for each port when a ib device is
2544 int (*init_port)(struct ib_device *device, u8 port_num,
2545 struct kobject *port_sysfs);
2547 * Allows rdma drivers to add their own restrack attributes.
2549 int (*fill_res_entry)(struct sk_buff *msg,
2550 struct rdma_restrack_entry *entry);
2552 /* Device lifecycle callbacks */
2554 * Called after the device becomes registered, before clients are
2557 int (*enable_driver)(struct ib_device *dev);
2559 * This is called as part of ib_dealloc_device().
2561 void (*dealloc_driver)(struct ib_device *dev);
2563 /* iWarp CM callbacks */
2564 void (*iw_add_ref)(struct ib_qp *qp);
2565 void (*iw_rem_ref)(struct ib_qp *qp);
2566 struct ib_qp *(*iw_get_qp)(struct ib_device *device, int qpn);
2567 int (*iw_connect)(struct iw_cm_id *cm_id,
2568 struct iw_cm_conn_param *conn_param);
2569 int (*iw_accept)(struct iw_cm_id *cm_id,
2570 struct iw_cm_conn_param *conn_param);
2571 int (*iw_reject)(struct iw_cm_id *cm_id, const void *pdata,
2573 int (*iw_create_listen)(struct iw_cm_id *cm_id, int backlog);
2574 int (*iw_destroy_listen)(struct iw_cm_id *cm_id);
2576 * counter_bind_qp - Bind a QP to a counter.
2577 * @counter - The counter to be bound. If counter->id is zero then
2578 * the driver needs to allocate a new counter and set counter->id
2580 int (*counter_bind_qp)(struct rdma_counter *counter, struct ib_qp *qp);
2582 * counter_unbind_qp - Unbind the qp from the dynamically-allocated
2583 * counter and bind it onto the default one
2585 int (*counter_unbind_qp)(struct ib_qp *qp);
2587 * counter_dealloc -De-allocate the hw counter
2589 int (*counter_dealloc)(struct rdma_counter *counter);
2591 * counter_alloc_stats - Allocate a struct rdma_hw_stats and fill in
2592 * the driver initialized data.
2594 struct rdma_hw_stats *(*counter_alloc_stats)(
2595 struct rdma_counter *counter);
2597 * counter_update_stats - Query the stats value of this counter
2599 int (*counter_update_stats)(struct rdma_counter *counter);
2602 * Allows rdma drivers to add their own restrack attributes
2603 * dumped via 'rdma stat' iproute2 command.
2605 int (*fill_stat_entry)(struct sk_buff *msg,
2606 struct rdma_restrack_entry *entry);
2608 DECLARE_RDMA_OBJ_SIZE(ib_ah);
2609 DECLARE_RDMA_OBJ_SIZE(ib_cq);
2610 DECLARE_RDMA_OBJ_SIZE(ib_pd);
2611 DECLARE_RDMA_OBJ_SIZE(ib_srq);
2612 DECLARE_RDMA_OBJ_SIZE(ib_ucontext);
2615 struct ib_core_device {
2616 /* device must be the first element in structure until,
2617 * union of ib_core_device and device exists in ib_device.
2620 possible_net_t rdma_net;
2621 struct kobject *ports_kobj;
2622 struct list_head port_list;
2623 struct ib_device *owner; /* reach back to owner ib_device */
2626 struct rdma_restrack_root;
2628 /* Do not access @dma_device directly from ULP nor from HW drivers. */
2629 struct device *dma_device;
2630 struct ib_device_ops ops;
2631 char name[IB_DEVICE_NAME_MAX];
2632 struct rcu_head rcu_head;
2634 struct list_head event_handler_list;
2635 /* Protects event_handler_list */
2636 struct rw_semaphore event_handler_rwsem;
2638 /* Protects QP's event_handler calls and open_qp list */
2639 spinlock_t qp_open_list_lock;
2641 struct rw_semaphore client_data_rwsem;
2642 struct xarray client_data;
2643 struct mutex unregistration_lock;
2645 /* Synchronize GID, Pkey cache entries, subnet prefix, LMC */
2646 rwlock_t cache_lock;
2648 * port_data is indexed by port number
2650 struct ib_port_data *port_data;
2652 int num_comp_vectors;
2656 struct ib_core_device coredev;
2659 /* First group for device attributes,
2660 * Second group for driver provided attributes (optional).
2661 * It is NULL terminated array.
2663 const struct attribute_group *groups[3];
2665 u64 uverbs_cmd_mask;
2666 u64 uverbs_ex_cmd_mask;
2668 char node_desc[IB_DEVICE_NODE_DESC_MAX];
2672 /* Indicates kernel verbs support, should not be used in drivers */
2673 u16 kverbs_provider:1;
2674 /* CQ adaptive moderation (RDMA DIM) */
2678 struct ib_device_attr attrs;
2679 struct attribute_group *hw_stats_ag;
2680 struct rdma_hw_stats *hw_stats;
2682 #ifdef CONFIG_CGROUP_RDMA
2683 struct rdmacg_device cg_device;
2687 struct rdma_restrack_root *res;
2689 const struct uapi_definition *driver_def;
2692 * Positive refcount indicates that the device is currently
2693 * registered and cannot be unregistered.
2695 refcount_t refcount;
2696 struct completion unreg_completion;
2697 struct work_struct unregistration_work;
2699 const struct rdma_link_ops *link_ops;
2701 /* Protects compat_devs xarray modifications */
2702 struct mutex compat_devs_mutex;
2703 /* Maintains compat devices for each net namespace */
2704 struct xarray compat_devs;
2706 /* Used by iWarp CM */
2707 char iw_ifname[IFNAMSIZ];
2708 u32 iw_driver_flags;
2711 struct ib_client_nl_info;
2714 void (*add) (struct ib_device *);
2715 void (*remove)(struct ib_device *, void *client_data);
2716 void (*rename)(struct ib_device *dev, void *client_data);
2717 int (*get_nl_info)(struct ib_device *ibdev, void *client_data,
2718 struct ib_client_nl_info *res);
2719 int (*get_global_nl_info)(struct ib_client_nl_info *res);
2721 /* Returns the net_dev belonging to this ib_client and matching the
2723 * @dev: An RDMA device that the net_dev use for communication.
2724 * @port: A physical port number on the RDMA device.
2725 * @pkey: P_Key that the net_dev uses if applicable.
2726 * @gid: A GID that the net_dev uses to communicate.
2727 * @addr: An IP address the net_dev is configured with.
2728 * @client_data: The device's client data set by ib_set_client_data().
2730 * An ib_client that implements a net_dev on top of RDMA devices
2731 * (such as IP over IB) should implement this callback, allowing the
2732 * rdma_cm module to find the right net_dev for a given request.
2734 * The caller is responsible for calling dev_put on the returned
2736 struct net_device *(*get_net_dev_by_params)(
2737 struct ib_device *dev,
2740 const union ib_gid *gid,
2741 const struct sockaddr *addr,
2745 struct completion uses_zero;
2748 /* kverbs are not required by the client */
2753 * IB block DMA iterator
2755 * Iterates the DMA-mapped SGL in contiguous memory blocks aligned
2756 * to a HW supported page size.
2758 struct ib_block_iter {
2759 /* internal states */
2760 struct scatterlist *__sg; /* sg holding the current aligned block */
2761 dma_addr_t __dma_addr; /* unaligned DMA address of this block */
2762 unsigned int __sg_nents; /* number of SG entries */
2763 unsigned int __sg_advance; /* number of bytes to advance in sg in next step */
2764 unsigned int __pg_bit; /* alignment of current block */
2767 struct ib_device *_ib_alloc_device(size_t size);
2768 #define ib_alloc_device(drv_struct, member) \
2769 container_of(_ib_alloc_device(sizeof(struct drv_struct) + \
2770 BUILD_BUG_ON_ZERO(offsetof( \
2771 struct drv_struct, member))), \
2772 struct drv_struct, member)
2774 void ib_dealloc_device(struct ib_device *device);
2776 void ib_get_device_fw_str(struct ib_device *device, char *str);
2778 int ib_register_device(struct ib_device *device, const char *name);
2779 void ib_unregister_device(struct ib_device *device);
2780 void ib_unregister_driver(enum rdma_driver_id driver_id);
2781 void ib_unregister_device_and_put(struct ib_device *device);
2782 void ib_unregister_device_queued(struct ib_device *ib_dev);
2784 int ib_register_client (struct ib_client *client);
2785 void ib_unregister_client(struct ib_client *client);
2787 void __rdma_block_iter_start(struct ib_block_iter *biter,
2788 struct scatterlist *sglist,
2790 unsigned long pgsz);
2791 bool __rdma_block_iter_next(struct ib_block_iter *biter);
2794 * rdma_block_iter_dma_address - get the aligned dma address of the current
2795 * block held by the block iterator.
2796 * @biter: block iterator holding the memory block
2798 static inline dma_addr_t
2799 rdma_block_iter_dma_address(struct ib_block_iter *biter)
2801 return biter->__dma_addr & ~(BIT_ULL(biter->__pg_bit) - 1);
2805 * rdma_for_each_block - iterate over contiguous memory blocks of the sg list
2806 * @sglist: sglist to iterate over
2807 * @biter: block iterator holding the memory block
2808 * @nents: maximum number of sg entries to iterate over
2809 * @pgsz: best HW supported page size to use
2811 * Callers may use rdma_block_iter_dma_address() to get each
2812 * blocks aligned DMA address.
2814 #define rdma_for_each_block(sglist, biter, nents, pgsz) \
2815 for (__rdma_block_iter_start(biter, sglist, nents, \
2817 __rdma_block_iter_next(biter);)
2820 * ib_get_client_data - Get IB client context
2821 * @device:Device to get context for
2822 * @client:Client to get context for
2824 * ib_get_client_data() returns the client context data set with
2825 * ib_set_client_data(). This can only be called while the client is
2826 * registered to the device, once the ib_client remove() callback returns this
2829 static inline void *ib_get_client_data(struct ib_device *device,
2830 struct ib_client *client)
2832 return xa_load(&device->client_data, client->client_id);
2834 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
2836 void ib_set_device_ops(struct ib_device *device,
2837 const struct ib_device_ops *ops);
2839 int rdma_user_mmap_io(struct ib_ucontext *ucontext, struct vm_area_struct *vma,
2840 unsigned long pfn, unsigned long size, pgprot_t prot,
2841 struct rdma_user_mmap_entry *entry);
2842 int rdma_user_mmap_entry_insert(struct ib_ucontext *ucontext,
2843 struct rdma_user_mmap_entry *entry,
2845 int rdma_user_mmap_entry_insert_range(struct ib_ucontext *ucontext,
2846 struct rdma_user_mmap_entry *entry,
2847 size_t length, u32 min_pgoff,
2850 struct rdma_user_mmap_entry *
2851 rdma_user_mmap_entry_get_pgoff(struct ib_ucontext *ucontext,
2852 unsigned long pgoff);
2853 struct rdma_user_mmap_entry *
2854 rdma_user_mmap_entry_get(struct ib_ucontext *ucontext,
2855 struct vm_area_struct *vma);
2856 void rdma_user_mmap_entry_put(struct rdma_user_mmap_entry *entry);
2858 void rdma_user_mmap_entry_remove(struct rdma_user_mmap_entry *entry);
2860 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
2862 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
2865 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
2867 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
2870 static inline bool ib_is_buffer_cleared(const void __user *p,
2876 if (len > USHRT_MAX)
2879 buf = memdup_user(p, len);
2883 ret = !memchr_inv(buf, 0, len);
2888 static inline bool ib_is_udata_cleared(struct ib_udata *udata,
2892 return ib_is_buffer_cleared(udata->inbuf + offset, len);
2896 * ib_is_destroy_retryable - Check whether the uobject destruction
2898 * @ret: The initial destruction return code
2899 * @why: remove reason
2900 * @uobj: The uobject that is destroyed
2902 * This function is a helper function that IB layer and low-level drivers
2903 * can use to consider whether the destruction of the given uobject is
2905 * It checks the original return code, if it wasn't success the destruction
2906 * is retryable according to the ucontext state (i.e. cleanup_retryable) and
2907 * the remove reason. (i.e. why).
2908 * Must be called with the object locked for destroy.
2910 static inline bool ib_is_destroy_retryable(int ret, enum rdma_remove_reason why,
2911 struct ib_uobject *uobj)
2913 return ret && (why == RDMA_REMOVE_DESTROY ||
2914 uobj->context->cleanup_retryable);
2918 * ib_destroy_usecnt - Called during destruction to check the usecnt
2919 * @usecnt: The usecnt atomic
2920 * @why: remove reason
2921 * @uobj: The uobject that is destroyed
2923 * Non-zero usecnts will block destruction unless destruction was triggered by
2924 * a ucontext cleanup.
2926 static inline int ib_destroy_usecnt(atomic_t *usecnt,
2927 enum rdma_remove_reason why,
2928 struct ib_uobject *uobj)
2930 if (atomic_read(usecnt) && ib_is_destroy_retryable(-EBUSY, why, uobj))
2936 * ib_modify_qp_is_ok - Check that the supplied attribute mask
2937 * contains all required attributes and no attributes not allowed for
2938 * the given QP state transition.
2939 * @cur_state: Current QP state
2940 * @next_state: Next QP state
2942 * @mask: Mask of supplied QP attributes
2944 * This function is a helper function that a low-level driver's
2945 * modify_qp method can use to validate the consumer's input. It
2946 * checks that cur_state and next_state are valid QP states, that a
2947 * transition from cur_state to next_state is allowed by the IB spec,
2948 * and that the attribute mask supplied is allowed for the transition.
2950 bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
2951 enum ib_qp_type type, enum ib_qp_attr_mask mask);
2953 void ib_register_event_handler(struct ib_event_handler *event_handler);
2954 void ib_unregister_event_handler(struct ib_event_handler *event_handler);
2955 void ib_dispatch_event(const struct ib_event *event);
2957 int ib_query_port(struct ib_device *device,
2958 u8 port_num, struct ib_port_attr *port_attr);
2960 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
2964 * rdma_cap_ib_switch - Check if the device is IB switch
2965 * @device: Device to check
2967 * Device driver is responsible for setting is_switch bit on
2968 * in ib_device structure at init time.
2970 * Return: true if the device is IB switch.
2972 static inline bool rdma_cap_ib_switch(const struct ib_device *device)
2974 return device->is_switch;
2978 * rdma_start_port - Return the first valid port number for the device
2981 * @device: Device to be checked
2983 * Return start port number
2985 static inline u8 rdma_start_port(const struct ib_device *device)
2987 return rdma_cap_ib_switch(device) ? 0 : 1;
2991 * rdma_for_each_port - Iterate over all valid port numbers of the IB device
2992 * @device - The struct ib_device * to iterate over
2993 * @iter - The unsigned int to store the port number
2995 #define rdma_for_each_port(device, iter) \
2996 for (iter = rdma_start_port(device + BUILD_BUG_ON_ZERO(!__same_type( \
2997 unsigned int, iter))); \
2998 iter <= rdma_end_port(device); (iter)++)
3001 * rdma_end_port - Return the last valid port number for the device
3004 * @device: Device to be checked
3006 * Return last port number
3008 static inline u8 rdma_end_port(const struct ib_device *device)
3010 return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt;
3013 static inline int rdma_is_port_valid(const struct ib_device *device,
3016 return (port >= rdma_start_port(device) &&
3017 port <= rdma_end_port(device));
3020 static inline bool rdma_is_grh_required(const struct ib_device *device,
3023 return device->port_data[port_num].immutable.core_cap_flags &
3024 RDMA_CORE_PORT_IB_GRH_REQUIRED;
3027 static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num)
3029 return device->port_data[port_num].immutable.core_cap_flags &
3030 RDMA_CORE_CAP_PROT_IB;
3033 static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num)
3035 return device->port_data[port_num].immutable.core_cap_flags &
3036 (RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP);
3039 static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, u8 port_num)
3041 return device->port_data[port_num].immutable.core_cap_flags &
3042 RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
3045 static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, u8 port_num)
3047 return device->port_data[port_num].immutable.core_cap_flags &
3048 RDMA_CORE_CAP_PROT_ROCE;
3051 static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num)
3053 return device->port_data[port_num].immutable.core_cap_flags &
3054 RDMA_CORE_CAP_PROT_IWARP;
3057 static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num)
3059 return rdma_protocol_ib(device, port_num) ||
3060 rdma_protocol_roce(device, port_num);
3063 static inline bool rdma_protocol_raw_packet(const struct ib_device *device, u8 port_num)
3065 return device->port_data[port_num].immutable.core_cap_flags &
3066 RDMA_CORE_CAP_PROT_RAW_PACKET;
3069 static inline bool rdma_protocol_usnic(const struct ib_device *device, u8 port_num)
3071 return device->port_data[port_num].immutable.core_cap_flags &
3072 RDMA_CORE_CAP_PROT_USNIC;
3076 * rdma_cap_ib_mad - Check if the port of a device supports Infiniband
3077 * Management Datagrams.
3078 * @device: Device to check
3079 * @port_num: Port number to check
3081 * Management Datagrams (MAD) are a required part of the InfiniBand
3082 * specification and are supported on all InfiniBand devices. A slightly
3083 * extended version are also supported on OPA interfaces.
3085 * Return: true if the port supports sending/receiving of MAD packets.
3087 static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num)
3089 return device->port_data[port_num].immutable.core_cap_flags &
3090 RDMA_CORE_CAP_IB_MAD;
3094 * rdma_cap_opa_mad - Check if the port of device provides support for OPA
3095 * Management Datagrams.
3096 * @device: Device to check
3097 * @port_num: Port number to check
3099 * Intel OmniPath devices extend and/or replace the InfiniBand Management
3100 * datagrams with their own versions. These OPA MADs share many but not all of
3101 * the characteristics of InfiniBand MADs.
3103 * OPA MADs differ in the following ways:
3105 * 1) MADs are variable size up to 2K
3106 * IBTA defined MADs remain fixed at 256 bytes
3107 * 2) OPA SMPs must carry valid PKeys
3108 * 3) OPA SMP packets are a different format
3110 * Return: true if the port supports OPA MAD packet formats.
3112 static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num)
3114 return device->port_data[port_num].immutable.core_cap_flags &
3115 RDMA_CORE_CAP_OPA_MAD;
3119 * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband
3120 * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI).
3121 * @device: Device to check
3122 * @port_num: Port number to check
3124 * Each InfiniBand node is required to provide a Subnet Management Agent
3125 * that the subnet manager can access. Prior to the fabric being fully
3126 * configured by the subnet manager, the SMA is accessed via a well known
3127 * interface called the Subnet Management Interface (SMI). This interface
3128 * uses directed route packets to communicate with the SM to get around the
3129 * chicken and egg problem of the SM needing to know what's on the fabric
3130 * in order to configure the fabric, and needing to configure the fabric in
3131 * order to send packets to the devices on the fabric. These directed
3132 * route packets do not need the fabric fully configured in order to reach
3133 * their destination. The SMI is the only method allowed to send
3134 * directed route packets on an InfiniBand fabric.
3136 * Return: true if the port provides an SMI.
3138 static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num)
3140 return device->port_data[port_num].immutable.core_cap_flags &
3141 RDMA_CORE_CAP_IB_SMI;
3145 * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband
3146 * Communication Manager.
3147 * @device: Device to check
3148 * @port_num: Port number to check
3150 * The InfiniBand Communication Manager is one of many pre-defined General
3151 * Service Agents (GSA) that are accessed via the General Service
3152 * Interface (GSI). It's role is to facilitate establishment of connections
3153 * between nodes as well as other management related tasks for established
3156 * Return: true if the port supports an IB CM (this does not guarantee that
3157 * a CM is actually running however).
3159 static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num)
3161 return device->port_data[port_num].immutable.core_cap_flags &
3162 RDMA_CORE_CAP_IB_CM;
3166 * rdma_cap_iw_cm - Check if the port of device has the capability IWARP
3167 * Communication Manager.
3168 * @device: Device to check
3169 * @port_num: Port number to check
3171 * Similar to above, but specific to iWARP connections which have a different
3172 * managment protocol than InfiniBand.
3174 * Return: true if the port supports an iWARP CM (this does not guarantee that
3175 * a CM is actually running however).
3177 static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num)
3179 return device->port_data[port_num].immutable.core_cap_flags &
3180 RDMA_CORE_CAP_IW_CM;
3184 * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband
3185 * Subnet Administration.
3186 * @device: Device to check
3187 * @port_num: Port number to check
3189 * An InfiniBand Subnet Administration (SA) service is a pre-defined General
3190 * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand
3191 * fabrics, devices should resolve routes to other hosts by contacting the
3192 * SA to query the proper route.
3194 * Return: true if the port should act as a client to the fabric Subnet
3195 * Administration interface. This does not imply that the SA service is
3198 static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num)
3200 return device->port_data[port_num].immutable.core_cap_flags &
3201 RDMA_CORE_CAP_IB_SA;
3205 * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband
3207 * @device: Device to check
3208 * @port_num: Port number to check
3210 * InfiniBand multicast registration is more complex than normal IPv4 or
3211 * IPv6 multicast registration. Each Host Channel Adapter must register
3212 * with the Subnet Manager when it wishes to join a multicast group. It
3213 * should do so only once regardless of how many queue pairs it subscribes
3214 * to this group. And it should leave the group only after all queue pairs
3215 * attached to the group have been detached.
3217 * Return: true if the port must undertake the additional adminstrative
3218 * overhead of registering/unregistering with the SM and tracking of the
3219 * total number of queue pairs attached to the multicast group.
3221 static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num)
3223 return rdma_cap_ib_sa(device, port_num);
3227 * rdma_cap_af_ib - Check if the port of device has the capability
3228 * Native Infiniband Address.
3229 * @device: Device to check
3230 * @port_num: Port number to check
3232 * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default
3233 * GID. RoCE uses a different mechanism, but still generates a GID via
3234 * a prescribed mechanism and port specific data.
3236 * Return: true if the port uses a GID address to identify devices on the
3239 static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num)
3241 return device->port_data[port_num].immutable.core_cap_flags &
3242 RDMA_CORE_CAP_AF_IB;
3246 * rdma_cap_eth_ah - Check if the port of device has the capability
3247 * Ethernet Address Handle.
3248 * @device: Device to check
3249 * @port_num: Port number to check
3251 * RoCE is InfiniBand over Ethernet, and it uses a well defined technique
3252 * to fabricate GIDs over Ethernet/IP specific addresses native to the
3253 * port. Normally, packet headers are generated by the sending host
3254 * adapter, but when sending connectionless datagrams, we must manually
3255 * inject the proper headers for the fabric we are communicating over.
3257 * Return: true if we are running as a RoCE port and must force the
3258 * addition of a Global Route Header built from our Ethernet Address
3259 * Handle into our header list for connectionless packets.
3261 static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num)
3263 return device->port_data[port_num].immutable.core_cap_flags &
3264 RDMA_CORE_CAP_ETH_AH;
3268 * rdma_cap_opa_ah - Check if the port of device supports
3269 * OPA Address handles
3270 * @device: Device to check
3271 * @port_num: Port number to check
3273 * Return: true if we are running on an OPA device which supports
3274 * the extended OPA addressing.
3276 static inline bool rdma_cap_opa_ah(struct ib_device *device, u8 port_num)
3278 return (device->port_data[port_num].immutable.core_cap_flags &
3279 RDMA_CORE_CAP_OPA_AH) == RDMA_CORE_CAP_OPA_AH;
3283 * rdma_max_mad_size - Return the max MAD size required by this RDMA Port.
3286 * @port_num: Port number
3288 * This MAD size includes the MAD headers and MAD payload. No other headers
3291 * Return the max MAD size required by the Port. Will return 0 if the port
3292 * does not support MADs
3294 static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num)
3296 return device->port_data[port_num].immutable.max_mad_size;
3300 * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table
3301 * @device: Device to check
3302 * @port_num: Port number to check
3304 * RoCE GID table mechanism manages the various GIDs for a device.
3306 * NOTE: if allocating the port's GID table has failed, this call will still
3307 * return true, but any RoCE GID table API will fail.
3309 * Return: true if the port uses RoCE GID table mechanism in order to manage
3312 static inline bool rdma_cap_roce_gid_table(const struct ib_device *device,
3315 return rdma_protocol_roce(device, port_num) &&
3316 device->ops.add_gid && device->ops.del_gid;
3320 * Check if the device supports READ W/ INVALIDATE.
3322 static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num)
3325 * iWarp drivers must support READ W/ INVALIDATE. No other protocol
3326 * has support for it yet.
3328 return rdma_protocol_iwarp(dev, port_num);
3332 * rdma_find_pg_bit - Find page bit given address and HW supported page sizes
3335 * @pgsz_bitmap: bitmap of HW supported page sizes
3337 static inline unsigned int rdma_find_pg_bit(unsigned long addr,
3338 unsigned long pgsz_bitmap)
3340 unsigned long align;
3343 align = addr & -addr;
3345 /* Find page bit such that addr is aligned to the highest supported
3348 pgsz = pgsz_bitmap & ~(-align << 1);
3350 return __ffs(pgsz_bitmap);
3355 int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port,
3357 int ib_get_vf_config(struct ib_device *device, int vf, u8 port,
3358 struct ifla_vf_info *info);
3359 int ib_get_vf_stats(struct ib_device *device, int vf, u8 port,
3360 struct ifla_vf_stats *stats);
3361 int ib_get_vf_guid(struct ib_device *device, int vf, u8 port,
3362 struct ifla_vf_guid *node_guid,
3363 struct ifla_vf_guid *port_guid);
3364 int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid,
3367 int ib_query_pkey(struct ib_device *device,
3368 u8 port_num, u16 index, u16 *pkey);
3370 int ib_modify_device(struct ib_device *device,
3371 int device_modify_mask,
3372 struct ib_device_modify *device_modify);
3374 int ib_modify_port(struct ib_device *device,
3375 u8 port_num, int port_modify_mask,
3376 struct ib_port_modify *port_modify);
3378 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
3379 u8 *port_num, u16 *index);
3381 int ib_find_pkey(struct ib_device *device,
3382 u8 port_num, u16 pkey, u16 *index);
3386 * Create a memory registration for all memory in the system and place
3387 * the rkey for it into pd->unsafe_global_rkey. This can be used by
3388 * ULPs to avoid the overhead of dynamic MRs.
3390 * This flag is generally considered unsafe and must only be used in
3391 * extremly trusted environments. Every use of it will log a warning
3392 * in the kernel log.
3394 IB_PD_UNSAFE_GLOBAL_RKEY = 0x01,
3397 struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags,
3398 const char *caller);
3400 #define ib_alloc_pd(device, flags) \
3401 __ib_alloc_pd((device), (flags), KBUILD_MODNAME)
3404 * ib_dealloc_pd_user - Deallocate kernel/user PD
3405 * @pd: The protection domain
3406 * @udata: Valid user data or NULL for kernel objects
3408 void ib_dealloc_pd_user(struct ib_pd *pd, struct ib_udata *udata);
3411 * ib_dealloc_pd - Deallocate kernel PD
3412 * @pd: The protection domain
3414 * NOTE: for user PD use ib_dealloc_pd_user with valid udata!
3416 static inline void ib_dealloc_pd(struct ib_pd *pd)
3418 ib_dealloc_pd_user(pd, NULL);
3421 enum rdma_create_ah_flags {
3422 /* In a sleepable context */
3423 RDMA_CREATE_AH_SLEEPABLE = BIT(0),
3427 * rdma_create_ah - Creates an address handle for the given address vector.
3428 * @pd: The protection domain associated with the address handle.
3429 * @ah_attr: The attributes of the address vector.
3430 * @flags: Create address handle flags (see enum rdma_create_ah_flags).
3432 * The address handle is used to reference a local or global destination
3433 * in all UD QP post sends.
3435 struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr,
3439 * rdma_create_user_ah - Creates an address handle for the given address vector.
3440 * It resolves destination mac address for ah attribute of RoCE type.
3441 * @pd: The protection domain associated with the address handle.
3442 * @ah_attr: The attributes of the address vector.
3443 * @udata: pointer to user's input output buffer information need by
3446 * It returns 0 on success and returns appropriate error code on error.
3447 * The address handle is used to reference a local or global destination
3448 * in all UD QP post sends.
3450 struct ib_ah *rdma_create_user_ah(struct ib_pd *pd,
3451 struct rdma_ah_attr *ah_attr,
3452 struct ib_udata *udata);
3454 * ib_get_gids_from_rdma_hdr - Get sgid and dgid from GRH or IPv4 header
3456 * @hdr: the L3 header to parse
3457 * @net_type: type of header to parse
3458 * @sgid: place to store source gid
3459 * @dgid: place to store destination gid
3461 int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr,
3462 enum rdma_network_type net_type,
3463 union ib_gid *sgid, union ib_gid *dgid);
3466 * ib_get_rdma_header_version - Get the header version
3467 * @hdr: the L3 header to parse
3469 int ib_get_rdma_header_version(const union rdma_network_hdr *hdr);
3472 * ib_init_ah_attr_from_wc - Initializes address handle attributes from a
3474 * @device: Device on which the received message arrived.
3475 * @port_num: Port on which the received message arrived.
3476 * @wc: Work completion associated with the received message.
3477 * @grh: References the received global route header. This parameter is
3478 * ignored unless the work completion indicates that the GRH is valid.
3479 * @ah_attr: Returned attributes that can be used when creating an address
3480 * handle for replying to the message.
3481 * When ib_init_ah_attr_from_wc() returns success,
3482 * (a) for IB link layer it optionally contains a reference to SGID attribute
3483 * when GRH is present for IB link layer.
3484 * (b) for RoCE link layer it contains a reference to SGID attribute.
3485 * User must invoke rdma_cleanup_ah_attr_gid_attr() to release reference to SGID
3486 * attributes which are initialized using ib_init_ah_attr_from_wc().
3489 int ib_init_ah_attr_from_wc(struct ib_device *device, u8 port_num,
3490 const struct ib_wc *wc, const struct ib_grh *grh,
3491 struct rdma_ah_attr *ah_attr);
3494 * ib_create_ah_from_wc - Creates an address handle associated with the
3495 * sender of the specified work completion.
3496 * @pd: The protection domain associated with the address handle.
3497 * @wc: Work completion information associated with a received message.
3498 * @grh: References the received global route header. This parameter is
3499 * ignored unless the work completion indicates that the GRH is valid.
3500 * @port_num: The outbound port number to associate with the address.
3502 * The address handle is used to reference a local or global destination
3503 * in all UD QP post sends.
3505 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc,
3506 const struct ib_grh *grh, u8 port_num);
3509 * rdma_modify_ah - Modifies the address vector associated with an address
3511 * @ah: The address handle to modify.
3512 * @ah_attr: The new address vector attributes to associate with the
3515 int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
3518 * rdma_query_ah - Queries the address vector associated with an address
3520 * @ah: The address handle to query.
3521 * @ah_attr: The address vector attributes associated with the address
3524 int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
3526 enum rdma_destroy_ah_flags {
3527 /* In a sleepable context */
3528 RDMA_DESTROY_AH_SLEEPABLE = BIT(0),
3532 * rdma_destroy_ah_user - Destroys an address handle.
3533 * @ah: The address handle to destroy.
3534 * @flags: Destroy address handle flags (see enum rdma_destroy_ah_flags).
3535 * @udata: Valid user data or NULL for kernel objects
3537 int rdma_destroy_ah_user(struct ib_ah *ah, u32 flags, struct ib_udata *udata);
3540 * rdma_destroy_ah - Destroys an kernel address handle.
3541 * @ah: The address handle to destroy.
3542 * @flags: Destroy address handle flags (see enum rdma_destroy_ah_flags).
3544 * NOTE: for user ah use rdma_destroy_ah_user with valid udata!
3546 static inline int rdma_destroy_ah(struct ib_ah *ah, u32 flags)
3548 return rdma_destroy_ah_user(ah, flags, NULL);
3552 * ib_create_srq - Creates a SRQ associated with the specified protection
3554 * @pd: The protection domain associated with the SRQ.
3555 * @srq_init_attr: A list of initial attributes required to create the
3556 * SRQ. If SRQ creation succeeds, then the attributes are updated to
3557 * the actual capabilities of the created SRQ.
3559 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
3560 * requested size of the SRQ, and set to the actual values allocated
3561 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
3562 * will always be at least as large as the requested values.
3564 struct ib_srq *ib_create_srq(struct ib_pd *pd,
3565 struct ib_srq_init_attr *srq_init_attr);
3568 * ib_modify_srq - Modifies the attributes for the specified SRQ.
3569 * @srq: The SRQ to modify.
3570 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
3571 * the current values of selected SRQ attributes are returned.
3572 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
3573 * are being modified.
3575 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
3576 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
3577 * the number of receives queued drops below the limit.
3579 int ib_modify_srq(struct ib_srq *srq,
3580 struct ib_srq_attr *srq_attr,
3581 enum ib_srq_attr_mask srq_attr_mask);
3584 * ib_query_srq - Returns the attribute list and current values for the
3586 * @srq: The SRQ to query.
3587 * @srq_attr: The attributes of the specified SRQ.
3589 int ib_query_srq(struct ib_srq *srq,
3590 struct ib_srq_attr *srq_attr);
3593 * ib_destroy_srq_user - Destroys the specified SRQ.
3594 * @srq: The SRQ to destroy.
3595 * @udata: Valid user data or NULL for kernel objects
3597 int ib_destroy_srq_user(struct ib_srq *srq, struct ib_udata *udata);
3600 * ib_destroy_srq - Destroys the specified kernel SRQ.
3601 * @srq: The SRQ to destroy.
3603 * NOTE: for user srq use ib_destroy_srq_user with valid udata!
3605 static inline int ib_destroy_srq(struct ib_srq *srq)
3607 return ib_destroy_srq_user(srq, NULL);
3611 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
3612 * @srq: The SRQ to post the work request on.
3613 * @recv_wr: A list of work requests to post on the receive queue.
3614 * @bad_recv_wr: On an immediate failure, this parameter will reference
3615 * the work request that failed to be posted on the QP.
3617 static inline int ib_post_srq_recv(struct ib_srq *srq,
3618 const struct ib_recv_wr *recv_wr,
3619 const struct ib_recv_wr **bad_recv_wr)
3621 const struct ib_recv_wr *dummy;
3623 return srq->device->ops.post_srq_recv(srq, recv_wr,
3624 bad_recv_wr ? : &dummy);
3628 * ib_create_qp_user - Creates a QP associated with the specified protection
3630 * @pd: The protection domain associated with the QP.
3631 * @qp_init_attr: A list of initial attributes required to create the
3632 * QP. If QP creation succeeds, then the attributes are updated to
3633 * the actual capabilities of the created QP.
3634 * @udata: Valid user data or NULL for kernel objects
3636 struct ib_qp *ib_create_qp_user(struct ib_pd *pd,
3637 struct ib_qp_init_attr *qp_init_attr,
3638 struct ib_udata *udata);
3641 * ib_create_qp - Creates a kernel QP associated with the specified protection
3643 * @pd: The protection domain associated with the QP.
3644 * @qp_init_attr: A list of initial attributes required to create the
3645 * QP. If QP creation succeeds, then the attributes are updated to
3646 * the actual capabilities of the created QP.
3647 * @udata: Valid user data or NULL for kernel objects
3649 * NOTE: for user qp use ib_create_qp_user with valid udata!
3651 static inline struct ib_qp *ib_create_qp(struct ib_pd *pd,
3652 struct ib_qp_init_attr *qp_init_attr)
3654 return ib_create_qp_user(pd, qp_init_attr, NULL);
3658 * ib_modify_qp_with_udata - Modifies the attributes for the specified QP.
3659 * @qp: The QP to modify.
3660 * @attr: On input, specifies the QP attributes to modify. On output,
3661 * the current values of selected QP attributes are returned.
3662 * @attr_mask: A bit-mask used to specify which attributes of the QP
3663 * are being modified.
3664 * @udata: pointer to user's input output buffer information
3665 * are being modified.
3666 * It returns 0 on success and returns appropriate error code on error.
3668 int ib_modify_qp_with_udata(struct ib_qp *qp,
3669 struct ib_qp_attr *attr,
3671 struct ib_udata *udata);
3674 * ib_modify_qp - Modifies the attributes for the specified QP and then
3675 * transitions the QP to the given state.
3676 * @qp: The QP to modify.
3677 * @qp_attr: On input, specifies the QP attributes to modify. On output,
3678 * the current values of selected QP attributes are returned.
3679 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
3680 * are being modified.
3682 int ib_modify_qp(struct ib_qp *qp,
3683 struct ib_qp_attr *qp_attr,
3687 * ib_query_qp - Returns the attribute list and current values for the
3689 * @qp: The QP to query.
3690 * @qp_attr: The attributes of the specified QP.
3691 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
3692 * @qp_init_attr: Additional attributes of the selected QP.
3694 * The qp_attr_mask may be used to limit the query to gathering only the
3695 * selected attributes.
3697 int ib_query_qp(struct ib_qp *qp,
3698 struct ib_qp_attr *qp_attr,
3700 struct ib_qp_init_attr *qp_init_attr);
3703 * ib_destroy_qp - Destroys the specified QP.
3704 * @qp: The QP to destroy.
3705 * @udata: Valid udata or NULL for kernel objects
3707 int ib_destroy_qp_user(struct ib_qp *qp, struct ib_udata *udata);
3710 * ib_destroy_qp - Destroys the specified kernel QP.
3711 * @qp: The QP to destroy.
3713 * NOTE: for user qp use ib_destroy_qp_user with valid udata!
3715 static inline int ib_destroy_qp(struct ib_qp *qp)
3717 return ib_destroy_qp_user(qp, NULL);
3721 * ib_open_qp - Obtain a reference to an existing sharable QP.
3722 * @xrcd - XRC domain
3723 * @qp_open_attr: Attributes identifying the QP to open.
3725 * Returns a reference to a sharable QP.
3727 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
3728 struct ib_qp_open_attr *qp_open_attr);
3731 * ib_close_qp - Release an external reference to a QP.
3732 * @qp: The QP handle to release
3734 * The opened QP handle is released by the caller. The underlying
3735 * shared QP is not destroyed until all internal references are released.
3737 int ib_close_qp(struct ib_qp *qp);
3740 * ib_post_send - Posts a list of work requests to the send queue of
3742 * @qp: The QP to post the work request on.
3743 * @send_wr: A list of work requests to post on the send queue.
3744 * @bad_send_wr: On an immediate failure, this parameter will reference
3745 * the work request that failed to be posted on the QP.
3747 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
3748 * error is returned, the QP state shall not be affected,
3749 * ib_post_send() will return an immediate error after queueing any
3750 * earlier work requests in the list.
3752 static inline int ib_post_send(struct ib_qp *qp,
3753 const struct ib_send_wr *send_wr,
3754 const struct ib_send_wr **bad_send_wr)
3756 const struct ib_send_wr *dummy;
3758 return qp->device->ops.post_send(qp, send_wr, bad_send_wr ? : &dummy);
3762 * ib_post_recv - Posts a list of work requests to the receive queue of
3764 * @qp: The QP to post the work request on.
3765 * @recv_wr: A list of work requests to post on the receive queue.
3766 * @bad_recv_wr: On an immediate failure, this parameter will reference
3767 * the work request that failed to be posted on the QP.
3769 static inline int ib_post_recv(struct ib_qp *qp,
3770 const struct ib_recv_wr *recv_wr,
3771 const struct ib_recv_wr **bad_recv_wr)
3773 const struct ib_recv_wr *dummy;
3775 return qp->device->ops.post_recv(qp, recv_wr, bad_recv_wr ? : &dummy);
3778 struct ib_cq *__ib_alloc_cq_user(struct ib_device *dev, void *private,
3779 int nr_cqe, int comp_vector,
3780 enum ib_poll_context poll_ctx,
3781 const char *caller, struct ib_udata *udata);
3784 * ib_alloc_cq_user: Allocate kernel/user CQ
3785 * @dev: The IB device
3786 * @private: Private data attached to the CQE
3787 * @nr_cqe: Number of CQEs in the CQ
3788 * @comp_vector: Completion vector used for the IRQs
3789 * @poll_ctx: Context used for polling the CQ
3790 * @udata: Valid user data or NULL for kernel objects
3792 static inline struct ib_cq *ib_alloc_cq_user(struct ib_device *dev,
3793 void *private, int nr_cqe,
3795 enum ib_poll_context poll_ctx,
3796 struct ib_udata *udata)
3798 return __ib_alloc_cq_user(dev, private, nr_cqe, comp_vector, poll_ctx,
3799 KBUILD_MODNAME, udata);
3803 * ib_alloc_cq: Allocate kernel CQ
3804 * @dev: The IB device
3805 * @private: Private data attached to the CQE
3806 * @nr_cqe: Number of CQEs in the CQ
3807 * @comp_vector: Completion vector used for the IRQs
3808 * @poll_ctx: Context used for polling the CQ
3810 * NOTE: for user cq use ib_alloc_cq_user with valid udata!
3812 static inline struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private,
3813 int nr_cqe, int comp_vector,
3814 enum ib_poll_context poll_ctx)
3816 return ib_alloc_cq_user(dev, private, nr_cqe, comp_vector, poll_ctx,
3820 struct ib_cq *__ib_alloc_cq_any(struct ib_device *dev, void *private,
3821 int nr_cqe, enum ib_poll_context poll_ctx,
3822 const char *caller);
3825 * ib_alloc_cq_any: Allocate kernel CQ
3826 * @dev: The IB device
3827 * @private: Private data attached to the CQE
3828 * @nr_cqe: Number of CQEs in the CQ
3829 * @poll_ctx: Context used for polling the CQ
3831 static inline struct ib_cq *ib_alloc_cq_any(struct ib_device *dev,
3832 void *private, int nr_cqe,
3833 enum ib_poll_context poll_ctx)
3835 return __ib_alloc_cq_any(dev, private, nr_cqe, poll_ctx,
3840 * ib_free_cq_user - Free kernel/user CQ
3841 * @cq: The CQ to free
3842 * @udata: Valid user data or NULL for kernel objects
3844 void ib_free_cq_user(struct ib_cq *cq, struct ib_udata *udata);
3847 * ib_free_cq - Free kernel CQ
3848 * @cq: The CQ to free
3850 * NOTE: for user cq use ib_free_cq_user with valid udata!
3852 static inline void ib_free_cq(struct ib_cq *cq)
3854 ib_free_cq_user(cq, NULL);
3857 int ib_process_cq_direct(struct ib_cq *cq, int budget);
3860 * ib_create_cq - Creates a CQ on the specified device.
3861 * @device: The device on which to create the CQ.
3862 * @comp_handler: A user-specified callback that is invoked when a
3863 * completion event occurs on the CQ.
3864 * @event_handler: A user-specified callback that is invoked when an
3865 * asynchronous event not associated with a completion occurs on the CQ.
3866 * @cq_context: Context associated with the CQ returned to the user via
3867 * the associated completion and event handlers.
3868 * @cq_attr: The attributes the CQ should be created upon.
3870 * Users can examine the cq structure to determine the actual CQ size.
3872 struct ib_cq *__ib_create_cq(struct ib_device *device,
3873 ib_comp_handler comp_handler,
3874 void (*event_handler)(struct ib_event *, void *),
3876 const struct ib_cq_init_attr *cq_attr,
3877 const char *caller);
3878 #define ib_create_cq(device, cmp_hndlr, evt_hndlr, cq_ctxt, cq_attr) \
3879 __ib_create_cq((device), (cmp_hndlr), (evt_hndlr), (cq_ctxt), (cq_attr), KBUILD_MODNAME)
3882 * ib_resize_cq - Modifies the capacity of the CQ.
3883 * @cq: The CQ to resize.
3884 * @cqe: The minimum size of the CQ.
3886 * Users can examine the cq structure to determine the actual CQ size.
3888 int ib_resize_cq(struct ib_cq *cq, int cqe);
3891 * rdma_set_cq_moderation - Modifies moderation params of the CQ
3892 * @cq: The CQ to modify.
3893 * @cq_count: number of CQEs that will trigger an event
3894 * @cq_period: max period of time in usec before triggering an event
3897 int rdma_set_cq_moderation(struct ib_cq *cq, u16 cq_count, u16 cq_period);
3900 * ib_destroy_cq_user - Destroys the specified CQ.
3901 * @cq: The CQ to destroy.
3902 * @udata: Valid user data or NULL for kernel objects
3904 int ib_destroy_cq_user(struct ib_cq *cq, struct ib_udata *udata);
3907 * ib_destroy_cq - Destroys the specified kernel CQ.
3908 * @cq: The CQ to destroy.
3910 * NOTE: for user cq use ib_destroy_cq_user with valid udata!
3912 static inline void ib_destroy_cq(struct ib_cq *cq)
3914 ib_destroy_cq_user(cq, NULL);
3918 * ib_poll_cq - poll a CQ for completion(s)
3919 * @cq:the CQ being polled
3920 * @num_entries:maximum number of completions to return
3921 * @wc:array of at least @num_entries &struct ib_wc where completions
3924 * Poll a CQ for (possibly multiple) completions. If the return value
3925 * is < 0, an error occurred. If the return value is >= 0, it is the
3926 * number of completions returned. If the return value is
3927 * non-negative and < num_entries, then the CQ was emptied.
3929 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
3932 return cq->device->ops.poll_cq(cq, num_entries, wc);
3936 * ib_req_notify_cq - Request completion notification on a CQ.
3937 * @cq: The CQ to generate an event for.
3939 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
3940 * to request an event on the next solicited event or next work
3941 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
3942 * may also be |ed in to request a hint about missed events, as
3946 * < 0 means an error occurred while requesting notification
3947 * == 0 means notification was requested successfully, and if
3948 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
3949 * were missed and it is safe to wait for another event. In
3950 * this case is it guaranteed that any work completions added
3951 * to the CQ since the last CQ poll will trigger a completion
3952 * notification event.
3953 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
3954 * in. It means that the consumer must poll the CQ again to
3955 * make sure it is empty to avoid missing an event because of a
3956 * race between requesting notification and an entry being
3957 * added to the CQ. This return value means it is possible
3958 * (but not guaranteed) that a work completion has been added
3959 * to the CQ since the last poll without triggering a
3960 * completion notification event.
3962 static inline int ib_req_notify_cq(struct ib_cq *cq,
3963 enum ib_cq_notify_flags flags)
3965 return cq->device->ops.req_notify_cq(cq, flags);
3969 * ib_req_ncomp_notif - Request completion notification when there are
3970 * at least the specified number of unreaped completions on the CQ.
3971 * @cq: The CQ to generate an event for.
3972 * @wc_cnt: The number of unreaped completions that should be on the
3973 * CQ before an event is generated.
3975 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
3977 return cq->device->ops.req_ncomp_notif ?
3978 cq->device->ops.req_ncomp_notif(cq, wc_cnt) :
3983 * ib_dma_mapping_error - check a DMA addr for error
3984 * @dev: The device for which the dma_addr was created
3985 * @dma_addr: The DMA address to check
3987 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
3989 return dma_mapping_error(dev->dma_device, dma_addr);
3993 * ib_dma_map_single - Map a kernel virtual address to DMA address
3994 * @dev: The device for which the dma_addr is to be created
3995 * @cpu_addr: The kernel virtual address
3996 * @size: The size of the region in bytes
3997 * @direction: The direction of the DMA
3999 static inline u64 ib_dma_map_single(struct ib_device *dev,
4000 void *cpu_addr, size_t size,
4001 enum dma_data_direction direction)
4003 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
4007 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
4008 * @dev: The device for which the DMA address was created
4009 * @addr: The DMA address
4010 * @size: The size of the region in bytes
4011 * @direction: The direction of the DMA
4013 static inline void ib_dma_unmap_single(struct ib_device *dev,
4014 u64 addr, size_t size,
4015 enum dma_data_direction direction)
4017 dma_unmap_single(dev->dma_device, addr, size, direction);
4021 * ib_dma_map_page - Map a physical page to DMA address
4022 * @dev: The device for which the dma_addr is to be created
4023 * @page: The page to be mapped
4024 * @offset: The offset within the page
4025 * @size: The size of the region in bytes
4026 * @direction: The direction of the DMA
4028 static inline u64 ib_dma_map_page(struct ib_device *dev,
4030 unsigned long offset,
4032 enum dma_data_direction direction)
4034 return dma_map_page(dev->dma_device, page, offset, size, direction);
4038 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
4039 * @dev: The device for which the DMA address was created
4040 * @addr: The DMA address
4041 * @size: The size of the region in bytes
4042 * @direction: The direction of the DMA
4044 static inline void ib_dma_unmap_page(struct ib_device *dev,
4045 u64 addr, size_t size,
4046 enum dma_data_direction direction)
4048 dma_unmap_page(dev->dma_device, addr, size, direction);
4052 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
4053 * @dev: The device for which the DMA addresses are to be created
4054 * @sg: The array of scatter/gather entries
4055 * @nents: The number of scatter/gather entries
4056 * @direction: The direction of the DMA
4058 static inline int ib_dma_map_sg(struct ib_device *dev,
4059 struct scatterlist *sg, int nents,
4060 enum dma_data_direction direction)
4062 return dma_map_sg(dev->dma_device, sg, nents, direction);
4066 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
4067 * @dev: The device for which the DMA addresses were created
4068 * @sg: The array of scatter/gather entries
4069 * @nents: The number of scatter/gather entries
4070 * @direction: The direction of the DMA
4072 static inline void ib_dma_unmap_sg(struct ib_device *dev,
4073 struct scatterlist *sg, int nents,
4074 enum dma_data_direction direction)
4076 dma_unmap_sg(dev->dma_device, sg, nents, direction);
4079 static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
4080 struct scatterlist *sg, int nents,
4081 enum dma_data_direction direction,
4082 unsigned long dma_attrs)
4084 return dma_map_sg_attrs(dev->dma_device, sg, nents, direction,
4088 static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
4089 struct scatterlist *sg, int nents,
4090 enum dma_data_direction direction,
4091 unsigned long dma_attrs)
4093 dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, dma_attrs);
4097 * ib_dma_max_seg_size - Return the size limit of a single DMA transfer
4098 * @dev: The device to query
4100 * The returned value represents a size in bytes.
4102 static inline unsigned int ib_dma_max_seg_size(struct ib_device *dev)
4104 return dma_get_max_seg_size(dev->dma_device);
4108 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
4109 * @dev: The device for which the DMA address was created
4110 * @addr: The DMA address
4111 * @size: The size of the region in bytes
4112 * @dir: The direction of the DMA
4114 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
4117 enum dma_data_direction dir)
4119 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
4123 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
4124 * @dev: The device for which the DMA address was created
4125 * @addr: The DMA address
4126 * @size: The size of the region in bytes
4127 * @dir: The direction of the DMA
4129 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
4132 enum dma_data_direction dir)
4134 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
4138 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
4139 * @dev: The device for which the DMA address is requested
4140 * @size: The size of the region to allocate in bytes
4141 * @dma_handle: A pointer for returning the DMA address of the region
4142 * @flag: memory allocator flags
4144 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
4146 dma_addr_t *dma_handle,
4149 return dma_alloc_coherent(dev->dma_device, size, dma_handle, flag);
4153 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
4154 * @dev: The device for which the DMA addresses were allocated
4155 * @size: The size of the region
4156 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
4157 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
4159 static inline void ib_dma_free_coherent(struct ib_device *dev,
4160 size_t size, void *cpu_addr,
4161 dma_addr_t dma_handle)
4163 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
4167 * ib_dereg_mr_user - Deregisters a memory region and removes it from the
4168 * HCA translation table.
4169 * @mr: The memory region to deregister.
4170 * @udata: Valid user data or NULL for kernel object
4172 * This function can fail, if the memory region has memory windows bound to it.
4174 int ib_dereg_mr_user(struct ib_mr *mr, struct ib_udata *udata);
4177 * ib_dereg_mr - Deregisters a kernel memory region and removes it from the
4178 * HCA translation table.
4179 * @mr: The memory region to deregister.
4181 * This function can fail, if the memory region has memory windows bound to it.
4183 * NOTE: for user mr use ib_dereg_mr_user with valid udata!
4185 static inline int ib_dereg_mr(struct ib_mr *mr)
4187 return ib_dereg_mr_user(mr, NULL);
4190 struct ib_mr *ib_alloc_mr_user(struct ib_pd *pd, enum ib_mr_type mr_type,
4191 u32 max_num_sg, struct ib_udata *udata);
4193 static inline struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
4194 enum ib_mr_type mr_type, u32 max_num_sg)
4196 return ib_alloc_mr_user(pd, mr_type, max_num_sg, NULL);
4199 struct ib_mr *ib_alloc_mr_integrity(struct ib_pd *pd,
4200 u32 max_num_data_sg,
4201 u32 max_num_meta_sg);
4204 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
4206 * @mr - struct ib_mr pointer to be updated.
4207 * @newkey - new key to be used.
4209 static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey)
4211 mr->lkey = (mr->lkey & 0xffffff00) | newkey;
4212 mr->rkey = (mr->rkey & 0xffffff00) | newkey;
4216 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
4217 * for calculating a new rkey for type 2 memory windows.
4218 * @rkey - the rkey to increment.
4220 static inline u32 ib_inc_rkey(u32 rkey)
4222 const u32 mask = 0x000000ff;
4223 return ((rkey + 1) & mask) | (rkey & ~mask);
4227 * ib_alloc_fmr - Allocates a unmapped fast memory region.
4228 * @pd: The protection domain associated with the unmapped region.
4229 * @mr_access_flags: Specifies the memory access rights.
4230 * @fmr_attr: Attributes of the unmapped region.
4232 * A fast memory region must be mapped before it can be used as part of
4235 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
4236 int mr_access_flags,
4237 struct ib_fmr_attr *fmr_attr);
4240 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
4241 * @fmr: The fast memory region to associate with the pages.
4242 * @page_list: An array of physical pages to map to the fast memory region.
4243 * @list_len: The number of pages in page_list.
4244 * @iova: The I/O virtual address to use with the mapped region.
4246 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
4247 u64 *page_list, int list_len,
4250 return fmr->device->ops.map_phys_fmr(fmr, page_list, list_len, iova);
4254 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
4255 * @fmr_list: A linked list of fast memory regions to unmap.
4257 int ib_unmap_fmr(struct list_head *fmr_list);
4260 * ib_dealloc_fmr - Deallocates a fast memory region.
4261 * @fmr: The fast memory region to deallocate.
4263 int ib_dealloc_fmr(struct ib_fmr *fmr);
4266 * ib_attach_mcast - Attaches the specified QP to a multicast group.
4267 * @qp: QP to attach to the multicast group. The QP must be type
4269 * @gid: Multicast group GID.
4270 * @lid: Multicast group LID in host byte order.
4272 * In order to send and receive multicast packets, subnet
4273 * administration must have created the multicast group and configured
4274 * the fabric appropriately. The port associated with the specified
4275 * QP must also be a member of the multicast group.
4277 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
4280 * ib_detach_mcast - Detaches the specified QP from a multicast group.
4281 * @qp: QP to detach from the multicast group.
4282 * @gid: Multicast group GID.
4283 * @lid: Multicast group LID in host byte order.
4285 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
4288 * ib_alloc_xrcd - Allocates an XRC domain.
4289 * @device: The device on which to allocate the XRC domain.
4290 * @caller: Module name for kernel consumers
4292 struct ib_xrcd *__ib_alloc_xrcd(struct ib_device *device, const char *caller);
4293 #define ib_alloc_xrcd(device) \
4294 __ib_alloc_xrcd((device), KBUILD_MODNAME)
4297 * ib_dealloc_xrcd - Deallocates an XRC domain.
4298 * @xrcd: The XRC domain to deallocate.
4299 * @udata: Valid user data or NULL for kernel object
4301 int ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata);
4303 static inline int ib_check_mr_access(int flags)
4306 * Local write permission is required if remote write or
4307 * remote atomic permission is also requested.
4309 if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
4310 !(flags & IB_ACCESS_LOCAL_WRITE))
4316 static inline bool ib_access_writable(int access_flags)
4319 * We have writable memory backing the MR if any of the following
4320 * access flags are set. "Local write" and "remote write" obviously
4321 * require write access. "Remote atomic" can do things like fetch and
4322 * add, which will modify memory, and "MW bind" can change permissions
4323 * by binding a window.
4325 return access_flags &
4326 (IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE |
4327 IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_MW_BIND);
4331 * ib_check_mr_status: lightweight check of MR status.
4332 * This routine may provide status checks on a selected
4333 * ib_mr. first use is for signature status check.
4335 * @mr: A memory region.
4336 * @check_mask: Bitmask of which checks to perform from
4337 * ib_mr_status_check enumeration.
4338 * @mr_status: The container of relevant status checks.
4339 * failed checks will be indicated in the status bitmask
4340 * and the relevant info shall be in the error item.
4342 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
4343 struct ib_mr_status *mr_status);
4346 * ib_device_try_get: Hold a registration lock
4347 * device: The device to lock
4349 * A device under an active registration lock cannot become unregistered. It
4350 * is only possible to obtain a registration lock on a device that is fully
4351 * registered, otherwise this function returns false.
4353 * The registration lock is only necessary for actions which require the
4354 * device to still be registered. Uses that only require the device pointer to
4355 * be valid should use get_device(&ibdev->dev) to hold the memory.
4358 static inline bool ib_device_try_get(struct ib_device *dev)
4360 return refcount_inc_not_zero(&dev->refcount);
4363 void ib_device_put(struct ib_device *device);
4364 struct ib_device *ib_device_get_by_netdev(struct net_device *ndev,
4365 enum rdma_driver_id driver_id);
4366 struct ib_device *ib_device_get_by_name(const char *name,
4367 enum rdma_driver_id driver_id);
4368 struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port,
4369 u16 pkey, const union ib_gid *gid,
4370 const struct sockaddr *addr);
4371 int ib_device_set_netdev(struct ib_device *ib_dev, struct net_device *ndev,
4373 struct net_device *ib_device_netdev(struct ib_device *dev, u8 port);
4375 struct ib_wq *ib_create_wq(struct ib_pd *pd,
4376 struct ib_wq_init_attr *init_attr);
4377 int ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata);
4378 int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *attr,
4380 struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device,
4381 struct ib_rwq_ind_table_init_attr*
4382 wq_ind_table_init_attr);
4383 int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);
4385 int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
4386 unsigned int *sg_offset, unsigned int page_size);
4387 int ib_map_mr_sg_pi(struct ib_mr *mr, struct scatterlist *data_sg,
4388 int data_sg_nents, unsigned int *data_sg_offset,
4389 struct scatterlist *meta_sg, int meta_sg_nents,
4390 unsigned int *meta_sg_offset, unsigned int page_size);
4393 ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
4394 unsigned int *sg_offset, unsigned int page_size)
4398 n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size);
4404 int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents,
4405 unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64));
4407 void ib_drain_rq(struct ib_qp *qp);
4408 void ib_drain_sq(struct ib_qp *qp);
4409 void ib_drain_qp(struct ib_qp *qp);
4411 int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u8 *speed, u8 *width);
4413 static inline u8 *rdma_ah_retrieve_dmac(struct rdma_ah_attr *attr)
4415 if (attr->type == RDMA_AH_ATTR_TYPE_ROCE)
4416 return attr->roce.dmac;
4420 static inline void rdma_ah_set_dlid(struct rdma_ah_attr *attr, u32 dlid)
4422 if (attr->type == RDMA_AH_ATTR_TYPE_IB)
4423 attr->ib.dlid = (u16)dlid;
4424 else if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
4425 attr->opa.dlid = dlid;
4428 static inline u32 rdma_ah_get_dlid(const struct rdma_ah_attr *attr)
4430 if (attr->type == RDMA_AH_ATTR_TYPE_IB)
4431 return attr->ib.dlid;
4432 else if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
4433 return attr->opa.dlid;
4437 static inline void rdma_ah_set_sl(struct rdma_ah_attr *attr, u8 sl)
4442 static inline u8 rdma_ah_get_sl(const struct rdma_ah_attr *attr)
4447 static inline void rdma_ah_set_path_bits(struct rdma_ah_attr *attr,
4450 if (attr->type == RDMA_AH_ATTR_TYPE_IB)
4451 attr->ib.src_path_bits = src_path_bits;
4452 else if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
4453 attr->opa.src_path_bits = src_path_bits;
4456 static inline u8 rdma_ah_get_path_bits(const struct rdma_ah_attr *attr)
4458 if (attr->type == RDMA_AH_ATTR_TYPE_IB)
4459 return attr->ib.src_path_bits;
4460 else if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
4461 return attr->opa.src_path_bits;
4465 static inline void rdma_ah_set_make_grd(struct rdma_ah_attr *attr,
4468 if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
4469 attr->opa.make_grd = make_grd;
4472 static inline bool rdma_ah_get_make_grd(const struct rdma_ah_attr *attr)
4474 if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
4475 return attr->opa.make_grd;
4479 static inline void rdma_ah_set_port_num(struct rdma_ah_attr *attr, u8 port_num)
4481 attr->port_num = port_num;
4484 static inline u8 rdma_ah_get_port_num(const struct rdma_ah_attr *attr)
4486 return attr->port_num;
4489 static inline void rdma_ah_set_static_rate(struct rdma_ah_attr *attr,
4492 attr->static_rate = static_rate;
4495 static inline u8 rdma_ah_get_static_rate(const struct rdma_ah_attr *attr)
4497 return attr->static_rate;
4500 static inline void rdma_ah_set_ah_flags(struct rdma_ah_attr *attr,
4501 enum ib_ah_flags flag)
4503 attr->ah_flags = flag;
4506 static inline enum ib_ah_flags
4507 rdma_ah_get_ah_flags(const struct rdma_ah_attr *attr)
4509 return attr->ah_flags;
4512 static inline const struct ib_global_route
4513 *rdma_ah_read_grh(const struct rdma_ah_attr *attr)
4518 /*To retrieve and modify the grh */
4519 static inline struct ib_global_route
4520 *rdma_ah_retrieve_grh(struct rdma_ah_attr *attr)
4525 static inline void rdma_ah_set_dgid_raw(struct rdma_ah_attr *attr, void *dgid)
4527 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
4529 memcpy(grh->dgid.raw, dgid, sizeof(grh->dgid));
4532 static inline void rdma_ah_set_subnet_prefix(struct rdma_ah_attr *attr,
4535 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
4537 grh->dgid.global.subnet_prefix = prefix;
4540 static inline void rdma_ah_set_interface_id(struct rdma_ah_attr *attr,
4543 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
4545 grh->dgid.global.interface_id = if_id;
4548 static inline void rdma_ah_set_grh(struct rdma_ah_attr *attr,
4549 union ib_gid *dgid, u32 flow_label,
4550 u8 sgid_index, u8 hop_limit,
4553 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
4555 attr->ah_flags = IB_AH_GRH;
4558 grh->flow_label = flow_label;
4559 grh->sgid_index = sgid_index;
4560 grh->hop_limit = hop_limit;
4561 grh->traffic_class = traffic_class;
4562 grh->sgid_attr = NULL;
4565 void rdma_destroy_ah_attr(struct rdma_ah_attr *ah_attr);
4566 void rdma_move_grh_sgid_attr(struct rdma_ah_attr *attr, union ib_gid *dgid,
4567 u32 flow_label, u8 hop_limit, u8 traffic_class,
4568 const struct ib_gid_attr *sgid_attr);
4569 void rdma_copy_ah_attr(struct rdma_ah_attr *dest,
4570 const struct rdma_ah_attr *src);
4571 void rdma_replace_ah_attr(struct rdma_ah_attr *old,
4572 const struct rdma_ah_attr *new);
4573 void rdma_move_ah_attr(struct rdma_ah_attr *dest, struct rdma_ah_attr *src);
4576 * rdma_ah_find_type - Return address handle type.
4578 * @dev: Device to be checked
4579 * @port_num: Port number
4581 static inline enum rdma_ah_attr_type rdma_ah_find_type(struct ib_device *dev,
4584 if (rdma_protocol_roce(dev, port_num))
4585 return RDMA_AH_ATTR_TYPE_ROCE;
4586 if (rdma_protocol_ib(dev, port_num)) {
4587 if (rdma_cap_opa_ah(dev, port_num))
4588 return RDMA_AH_ATTR_TYPE_OPA;
4589 return RDMA_AH_ATTR_TYPE_IB;
4592 return RDMA_AH_ATTR_TYPE_UNDEFINED;
4596 * ib_lid_cpu16 - Return lid in 16bit CPU encoding.
4597 * In the current implementation the only way to get
4598 * get the 32bit lid is from other sources for OPA.
4599 * For IB, lids will always be 16bits so cast the
4600 * value accordingly.
4604 static inline u16 ib_lid_cpu16(u32 lid)
4606 WARN_ON_ONCE(lid & 0xFFFF0000);
4611 * ib_lid_be16 - Return lid in 16bit BE encoding.
4615 static inline __be16 ib_lid_be16(u32 lid)
4617 WARN_ON_ONCE(lid & 0xFFFF0000);
4618 return cpu_to_be16((u16)lid);
4622 * ib_get_vector_affinity - Get the affinity mappings of a given completion
4624 * @device: the rdma device
4625 * @comp_vector: index of completion vector
4627 * Returns NULL on failure, otherwise a corresponding cpu map of the
4628 * completion vector (returns all-cpus map if the device driver doesn't
4629 * implement get_vector_affinity).
4631 static inline const struct cpumask *
4632 ib_get_vector_affinity(struct ib_device *device, int comp_vector)
4634 if (comp_vector < 0 || comp_vector >= device->num_comp_vectors ||
4635 !device->ops.get_vector_affinity)
4638 return device->ops.get_vector_affinity(device, comp_vector);
4643 * rdma_roce_rescan_device - Rescan all of the network devices in the system
4644 * and add their gids, as needed, to the relevant RoCE devices.
4646 * @device: the rdma device
4648 void rdma_roce_rescan_device(struct ib_device *ibdev);
4650 struct ib_ucontext *ib_uverbs_get_ucontext_file(struct ib_uverbs_file *ufile);
4652 int uverbs_destroy_def_handler(struct uverbs_attr_bundle *attrs);
4654 struct net_device *rdma_alloc_netdev(struct ib_device *device, u8 port_num,
4655 enum rdma_netdev_t type, const char *name,
4656 unsigned char name_assign_type,
4657 void (*setup)(struct net_device *));
4659 int rdma_init_netdev(struct ib_device *device, u8 port_num,
4660 enum rdma_netdev_t type, const char *name,
4661 unsigned char name_assign_type,
4662 void (*setup)(struct net_device *),
4663 struct net_device *netdev);
4666 * rdma_set_device_sysfs_group - Set device attributes group to have
4667 * driver specific sysfs entries at
4668 * for infiniband class.
4670 * @device: device pointer for which attributes to be created
4671 * @group: Pointer to group which should be added when device
4672 * is registered with sysfs.
4673 * rdma_set_device_sysfs_group() allows existing drivers to expose one
4674 * group per device to have sysfs attributes.
4676 * NOTE: New drivers should not make use of this API; instead new device
4677 * parameter should be exposed via netlink command. This API and mechanism
4678 * exist only for existing drivers.
4681 rdma_set_device_sysfs_group(struct ib_device *dev,
4682 const struct attribute_group *group)
4684 dev->groups[1] = group;
4688 * rdma_device_to_ibdev - Get ib_device pointer from device pointer
4690 * @device: device pointer for which ib_device pointer to retrieve
4692 * rdma_device_to_ibdev() retrieves ib_device pointer from device.
4695 static inline struct ib_device *rdma_device_to_ibdev(struct device *device)
4697 struct ib_core_device *coredev =
4698 container_of(device, struct ib_core_device, dev);
4700 return coredev->owner;
4704 * rdma_device_to_drv_device - Helper macro to reach back to driver's
4705 * ib_device holder structure from device pointer.
4707 * NOTE: New drivers should not make use of this API; This API is only for
4708 * existing drivers who have exposed sysfs entries using
4709 * rdma_set_device_sysfs_group().
4711 #define rdma_device_to_drv_device(dev, drv_dev_struct, ibdev_member) \
4712 container_of(rdma_device_to_ibdev(dev), drv_dev_struct, ibdev_member)
4714 bool rdma_dev_access_netns(const struct ib_device *device,
4715 const struct net *net);
4716 #endif /* IB_VERBS_H */