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CommitLineData
1da177e4
LT
1/*
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.
2a1d9b7f 7 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
f7c6a7b5 8 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved.
1da177e4
LT
9 *
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:
15 *
16 * Redistribution and use in source and binary forms, with or
17 * without modification, are permitted provided that the following
18 * conditions are met:
19 *
20 * - Redistributions of source code must retain the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer.
23 *
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.
28 *
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
36 * SOFTWARE.
1da177e4
LT
37 */
38
39#if !defined(IB_VERBS_H)
40#define IB_VERBS_H
41
42#include <linux/types.h>
43#include <linux/device.h>
9b513090
RC
44#include <linux/mm.h>
45#include <linux/dma-mapping.h>
459d6e2a 46#include <linux/kref.h>
bfb3ea12
DB
47#include <linux/list.h>
48#include <linux/rwsem.h>
87ae9afd 49#include <linux/scatterlist.h>
f0626710 50#include <linux/workqueue.h>
e2773c06 51
60063497 52#include <linux/atomic.h>
e2773c06 53#include <asm/uaccess.h>
1da177e4 54
f0626710
TH
55extern struct workqueue_struct *ib_wq;
56
1da177e4
LT
57union ib_gid {
58 u8 raw[16];
59 struct {
97f52eb4
SH
60 __be64 subnet_prefix;
61 __be64 interface_id;
1da177e4
LT
62 } global;
63};
64
07ebafba
TT
65enum rdma_node_type {
66 /* IB values map to NodeInfo:NodeType. */
67 RDMA_NODE_IB_CA = 1,
68 RDMA_NODE_IB_SWITCH,
69 RDMA_NODE_IB_ROUTER,
180771a3
UM
70 RDMA_NODE_RNIC,
71 RDMA_NODE_USNIC,
1da177e4
LT
72};
73
07ebafba
TT
74enum rdma_transport_type {
75 RDMA_TRANSPORT_IB,
180771a3
UM
76 RDMA_TRANSPORT_IWARP,
77 RDMA_TRANSPORT_USNIC
07ebafba
TT
78};
79
80enum rdma_transport_type
81rdma_node_get_transport(enum rdma_node_type node_type) __attribute_const__;
82
a3f5adaf
EC
83enum rdma_link_layer {
84 IB_LINK_LAYER_UNSPECIFIED,
85 IB_LINK_LAYER_INFINIBAND,
86 IB_LINK_LAYER_ETHERNET,
87};
88
1da177e4
LT
89enum ib_device_cap_flags {
90 IB_DEVICE_RESIZE_MAX_WR = 1,
91 IB_DEVICE_BAD_PKEY_CNTR = (1<<1),
92 IB_DEVICE_BAD_QKEY_CNTR = (1<<2),
93 IB_DEVICE_RAW_MULTI = (1<<3),
94 IB_DEVICE_AUTO_PATH_MIG = (1<<4),
95 IB_DEVICE_CHANGE_PHY_PORT = (1<<5),
96 IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6),
97 IB_DEVICE_CURR_QP_STATE_MOD = (1<<7),
98 IB_DEVICE_SHUTDOWN_PORT = (1<<8),
99 IB_DEVICE_INIT_TYPE = (1<<9),
100 IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10),
101 IB_DEVICE_SYS_IMAGE_GUID = (1<<11),
102 IB_DEVICE_RC_RNR_NAK_GEN = (1<<12),
103 IB_DEVICE_SRQ_RESIZE = (1<<13),
104 IB_DEVICE_N_NOTIFY_CQ = (1<<14),
96f15c03 105 IB_DEVICE_LOCAL_DMA_LKEY = (1<<15),
0f39cf3d 106 IB_DEVICE_RESERVED = (1<<16), /* old SEND_W_INV */
e0605d91
EC
107 IB_DEVICE_MEM_WINDOW = (1<<17),
108 /*
109 * Devices should set IB_DEVICE_UD_IP_SUM if they support
110 * insertion of UDP and TCP checksum on outgoing UD IPoIB
111 * messages and can verify the validity of checksum for
112 * incoming messages. Setting this flag implies that the
113 * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
114 */
115 IB_DEVICE_UD_IP_CSUM = (1<<18),
c93570f2 116 IB_DEVICE_UD_TSO = (1<<19),
59991f94 117 IB_DEVICE_XRC = (1<<20),
00f7ec36 118 IB_DEVICE_MEM_MGT_EXTENSIONS = (1<<21),
47ee1b9f 119 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1<<22),
7083e42e 120 IB_DEVICE_MEM_WINDOW_TYPE_2A = (1<<23),
319a441d
HHZ
121 IB_DEVICE_MEM_WINDOW_TYPE_2B = (1<<24),
122 IB_DEVICE_MANAGED_FLOW_STEERING = (1<<29)
1da177e4
LT
123};
124
125enum ib_atomic_cap {
126 IB_ATOMIC_NONE,
127 IB_ATOMIC_HCA,
128 IB_ATOMIC_GLOB
129};
130
131struct ib_device_attr {
132 u64 fw_ver;
97f52eb4 133 __be64 sys_image_guid;
1da177e4
LT
134 u64 max_mr_size;
135 u64 page_size_cap;
136 u32 vendor_id;
137 u32 vendor_part_id;
138 u32 hw_ver;
139 int max_qp;
140 int max_qp_wr;
141 int device_cap_flags;
142 int max_sge;
143 int max_sge_rd;
144 int max_cq;
145 int max_cqe;
146 int max_mr;
147 int max_pd;
148 int max_qp_rd_atom;
149 int max_ee_rd_atom;
150 int max_res_rd_atom;
151 int max_qp_init_rd_atom;
152 int max_ee_init_rd_atom;
153 enum ib_atomic_cap atomic_cap;
5e80ba8f 154 enum ib_atomic_cap masked_atomic_cap;
1da177e4
LT
155 int max_ee;
156 int max_rdd;
157 int max_mw;
158 int max_raw_ipv6_qp;
159 int max_raw_ethy_qp;
160 int max_mcast_grp;
161 int max_mcast_qp_attach;
162 int max_total_mcast_qp_attach;
163 int max_ah;
164 int max_fmr;
165 int max_map_per_fmr;
166 int max_srq;
167 int max_srq_wr;
168 int max_srq_sge;
00f7ec36 169 unsigned int max_fast_reg_page_list_len;
1da177e4
LT
170 u16 max_pkeys;
171 u8 local_ca_ack_delay;
172};
173
174enum ib_mtu {
175 IB_MTU_256 = 1,
176 IB_MTU_512 = 2,
177 IB_MTU_1024 = 3,
178 IB_MTU_2048 = 4,
179 IB_MTU_4096 = 5
180};
181
182static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
183{
184 switch (mtu) {
185 case IB_MTU_256: return 256;
186 case IB_MTU_512: return 512;
187 case IB_MTU_1024: return 1024;
188 case IB_MTU_2048: return 2048;
189 case IB_MTU_4096: return 4096;
190 default: return -1;
191 }
192}
193
194enum ib_port_state {
195 IB_PORT_NOP = 0,
196 IB_PORT_DOWN = 1,
197 IB_PORT_INIT = 2,
198 IB_PORT_ARMED = 3,
199 IB_PORT_ACTIVE = 4,
200 IB_PORT_ACTIVE_DEFER = 5
201};
202
203enum ib_port_cap_flags {
204 IB_PORT_SM = 1 << 1,
205 IB_PORT_NOTICE_SUP = 1 << 2,
206 IB_PORT_TRAP_SUP = 1 << 3,
207 IB_PORT_OPT_IPD_SUP = 1 << 4,
208 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
209 IB_PORT_SL_MAP_SUP = 1 << 6,
210 IB_PORT_MKEY_NVRAM = 1 << 7,
211 IB_PORT_PKEY_NVRAM = 1 << 8,
212 IB_PORT_LED_INFO_SUP = 1 << 9,
213 IB_PORT_SM_DISABLED = 1 << 10,
214 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
215 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
71eeba16 216 IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14,
1da177e4
LT
217 IB_PORT_CM_SUP = 1 << 16,
218 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
219 IB_PORT_REINIT_SUP = 1 << 18,
220 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
221 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
222 IB_PORT_DR_NOTICE_SUP = 1 << 21,
223 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
224 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
225 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
226 IB_PORT_CLIENT_REG_SUP = 1 << 25
227};
228
229enum ib_port_width {
230 IB_WIDTH_1X = 1,
231 IB_WIDTH_4X = 2,
232 IB_WIDTH_8X = 4,
233 IB_WIDTH_12X = 8
234};
235
236static inline int ib_width_enum_to_int(enum ib_port_width width)
237{
238 switch (width) {
239 case IB_WIDTH_1X: return 1;
240 case IB_WIDTH_4X: return 4;
241 case IB_WIDTH_8X: return 8;
242 case IB_WIDTH_12X: return 12;
243 default: return -1;
244 }
245}
246
2e96691c
OG
247enum ib_port_speed {
248 IB_SPEED_SDR = 1,
249 IB_SPEED_DDR = 2,
250 IB_SPEED_QDR = 4,
251 IB_SPEED_FDR10 = 8,
252 IB_SPEED_FDR = 16,
253 IB_SPEED_EDR = 32
254};
255
7f624d02
SW
256struct ib_protocol_stats {
257 /* TBD... */
258};
259
260struct iw_protocol_stats {
261 u64 ipInReceives;
262 u64 ipInHdrErrors;
263 u64 ipInTooBigErrors;
264 u64 ipInNoRoutes;
265 u64 ipInAddrErrors;
266 u64 ipInUnknownProtos;
267 u64 ipInTruncatedPkts;
268 u64 ipInDiscards;
269 u64 ipInDelivers;
270 u64 ipOutForwDatagrams;
271 u64 ipOutRequests;
272 u64 ipOutDiscards;
273 u64 ipOutNoRoutes;
274 u64 ipReasmTimeout;
275 u64 ipReasmReqds;
276 u64 ipReasmOKs;
277 u64 ipReasmFails;
278 u64 ipFragOKs;
279 u64 ipFragFails;
280 u64 ipFragCreates;
281 u64 ipInMcastPkts;
282 u64 ipOutMcastPkts;
283 u64 ipInBcastPkts;
284 u64 ipOutBcastPkts;
285
286 u64 tcpRtoAlgorithm;
287 u64 tcpRtoMin;
288 u64 tcpRtoMax;
289 u64 tcpMaxConn;
290 u64 tcpActiveOpens;
291 u64 tcpPassiveOpens;
292 u64 tcpAttemptFails;
293 u64 tcpEstabResets;
294 u64 tcpCurrEstab;
295 u64 tcpInSegs;
296 u64 tcpOutSegs;
297 u64 tcpRetransSegs;
298 u64 tcpInErrs;
299 u64 tcpOutRsts;
300};
301
302union rdma_protocol_stats {
303 struct ib_protocol_stats ib;
304 struct iw_protocol_stats iw;
305};
306
1da177e4
LT
307struct ib_port_attr {
308 enum ib_port_state state;
309 enum ib_mtu max_mtu;
310 enum ib_mtu active_mtu;
311 int gid_tbl_len;
312 u32 port_cap_flags;
313 u32 max_msg_sz;
314 u32 bad_pkey_cntr;
315 u32 qkey_viol_cntr;
316 u16 pkey_tbl_len;
317 u16 lid;
318 u16 sm_lid;
319 u8 lmc;
320 u8 max_vl_num;
321 u8 sm_sl;
322 u8 subnet_timeout;
323 u8 init_type_reply;
324 u8 active_width;
325 u8 active_speed;
326 u8 phys_state;
327};
328
329enum ib_device_modify_flags {
c5bcbbb9
RD
330 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
331 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
1da177e4
LT
332};
333
334struct ib_device_modify {
335 u64 sys_image_guid;
c5bcbbb9 336 char node_desc[64];
1da177e4
LT
337};
338
339enum ib_port_modify_flags {
340 IB_PORT_SHUTDOWN = 1,
341 IB_PORT_INIT_TYPE = (1<<2),
342 IB_PORT_RESET_QKEY_CNTR = (1<<3)
343};
344
345struct ib_port_modify {
346 u32 set_port_cap_mask;
347 u32 clr_port_cap_mask;
348 u8 init_type;
349};
350
351enum ib_event_type {
352 IB_EVENT_CQ_ERR,
353 IB_EVENT_QP_FATAL,
354 IB_EVENT_QP_REQ_ERR,
355 IB_EVENT_QP_ACCESS_ERR,
356 IB_EVENT_COMM_EST,
357 IB_EVENT_SQ_DRAINED,
358 IB_EVENT_PATH_MIG,
359 IB_EVENT_PATH_MIG_ERR,
360 IB_EVENT_DEVICE_FATAL,
361 IB_EVENT_PORT_ACTIVE,
362 IB_EVENT_PORT_ERR,
363 IB_EVENT_LID_CHANGE,
364 IB_EVENT_PKEY_CHANGE,
d41fcc67
RD
365 IB_EVENT_SM_CHANGE,
366 IB_EVENT_SRQ_ERR,
367 IB_EVENT_SRQ_LIMIT_REACHED,
63942c9a 368 IB_EVENT_QP_LAST_WQE_REACHED,
761d90ed
OG
369 IB_EVENT_CLIENT_REREGISTER,
370 IB_EVENT_GID_CHANGE,
1da177e4
LT
371};
372
373struct ib_event {
374 struct ib_device *device;
375 union {
376 struct ib_cq *cq;
377 struct ib_qp *qp;
d41fcc67 378 struct ib_srq *srq;
1da177e4
LT
379 u8 port_num;
380 } element;
381 enum ib_event_type event;
382};
383
384struct ib_event_handler {
385 struct ib_device *device;
386 void (*handler)(struct ib_event_handler *, struct ib_event *);
387 struct list_head list;
388};
389
390#define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
391 do { \
392 (_ptr)->device = _device; \
393 (_ptr)->handler = _handler; \
394 INIT_LIST_HEAD(&(_ptr)->list); \
395 } while (0)
396
397struct ib_global_route {
398 union ib_gid dgid;
399 u32 flow_label;
400 u8 sgid_index;
401 u8 hop_limit;
402 u8 traffic_class;
403};
404
513789ed 405struct ib_grh {
97f52eb4
SH
406 __be32 version_tclass_flow;
407 __be16 paylen;
513789ed
HR
408 u8 next_hdr;
409 u8 hop_limit;
410 union ib_gid sgid;
411 union ib_gid dgid;
412};
413
1da177e4
LT
414enum {
415 IB_MULTICAST_QPN = 0xffffff
416};
417
f3a7c66b 418#define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
97f52eb4 419
1da177e4
LT
420enum ib_ah_flags {
421 IB_AH_GRH = 1
422};
423
bf6a9e31
JM
424enum ib_rate {
425 IB_RATE_PORT_CURRENT = 0,
426 IB_RATE_2_5_GBPS = 2,
427 IB_RATE_5_GBPS = 5,
428 IB_RATE_10_GBPS = 3,
429 IB_RATE_20_GBPS = 6,
430 IB_RATE_30_GBPS = 4,
431 IB_RATE_40_GBPS = 7,
432 IB_RATE_60_GBPS = 8,
433 IB_RATE_80_GBPS = 9,
71eeba16
MA
434 IB_RATE_120_GBPS = 10,
435 IB_RATE_14_GBPS = 11,
436 IB_RATE_56_GBPS = 12,
437 IB_RATE_112_GBPS = 13,
438 IB_RATE_168_GBPS = 14,
439 IB_RATE_25_GBPS = 15,
440 IB_RATE_100_GBPS = 16,
441 IB_RATE_200_GBPS = 17,
442 IB_RATE_300_GBPS = 18
bf6a9e31
JM
443};
444
445/**
446 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
447 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
448 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
449 * @rate: rate to convert.
450 */
451int ib_rate_to_mult(enum ib_rate rate) __attribute_const__;
452
71eeba16
MA
453/**
454 * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
455 * For example, IB_RATE_2_5_GBPS will be converted to 2500.
456 * @rate: rate to convert.
457 */
458int ib_rate_to_mbps(enum ib_rate rate) __attribute_const__;
459
bf6a9e31
JM
460/**
461 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
462 * enum.
463 * @mult: multiple to convert.
464 */
465enum ib_rate mult_to_ib_rate(int mult) __attribute_const__;
466
1da177e4
LT
467struct ib_ah_attr {
468 struct ib_global_route grh;
469 u16 dlid;
470 u8 sl;
471 u8 src_path_bits;
472 u8 static_rate;
473 u8 ah_flags;
474 u8 port_num;
475};
476
477enum ib_wc_status {
478 IB_WC_SUCCESS,
479 IB_WC_LOC_LEN_ERR,
480 IB_WC_LOC_QP_OP_ERR,
481 IB_WC_LOC_EEC_OP_ERR,
482 IB_WC_LOC_PROT_ERR,
483 IB_WC_WR_FLUSH_ERR,
484 IB_WC_MW_BIND_ERR,
485 IB_WC_BAD_RESP_ERR,
486 IB_WC_LOC_ACCESS_ERR,
487 IB_WC_REM_INV_REQ_ERR,
488 IB_WC_REM_ACCESS_ERR,
489 IB_WC_REM_OP_ERR,
490 IB_WC_RETRY_EXC_ERR,
491 IB_WC_RNR_RETRY_EXC_ERR,
492 IB_WC_LOC_RDD_VIOL_ERR,
493 IB_WC_REM_INV_RD_REQ_ERR,
494 IB_WC_REM_ABORT_ERR,
495 IB_WC_INV_EECN_ERR,
496 IB_WC_INV_EEC_STATE_ERR,
497 IB_WC_FATAL_ERR,
498 IB_WC_RESP_TIMEOUT_ERR,
499 IB_WC_GENERAL_ERR
500};
501
502enum ib_wc_opcode {
503 IB_WC_SEND,
504 IB_WC_RDMA_WRITE,
505 IB_WC_RDMA_READ,
506 IB_WC_COMP_SWAP,
507 IB_WC_FETCH_ADD,
508 IB_WC_BIND_MW,
c93570f2 509 IB_WC_LSO,
00f7ec36
SW
510 IB_WC_LOCAL_INV,
511 IB_WC_FAST_REG_MR,
5e80ba8f
VS
512 IB_WC_MASKED_COMP_SWAP,
513 IB_WC_MASKED_FETCH_ADD,
1da177e4
LT
514/*
515 * Set value of IB_WC_RECV so consumers can test if a completion is a
516 * receive by testing (opcode & IB_WC_RECV).
517 */
518 IB_WC_RECV = 1 << 7,
519 IB_WC_RECV_RDMA_WITH_IMM
520};
521
522enum ib_wc_flags {
523 IB_WC_GRH = 1,
00f7ec36
SW
524 IB_WC_WITH_IMM = (1<<1),
525 IB_WC_WITH_INVALIDATE = (1<<2),
d927d505 526 IB_WC_IP_CSUM_OK = (1<<3),
1da177e4
LT
527};
528
529struct ib_wc {
530 u64 wr_id;
531 enum ib_wc_status status;
532 enum ib_wc_opcode opcode;
533 u32 vendor_err;
534 u32 byte_len;
062dbb69 535 struct ib_qp *qp;
00f7ec36
SW
536 union {
537 __be32 imm_data;
538 u32 invalidate_rkey;
539 } ex;
1da177e4
LT
540 u32 src_qp;
541 int wc_flags;
542 u16 pkey_index;
543 u16 slid;
544 u8 sl;
545 u8 dlid_path_bits;
546 u8 port_num; /* valid only for DR SMPs on switches */
547};
548
ed23a727
RD
549enum ib_cq_notify_flags {
550 IB_CQ_SOLICITED = 1 << 0,
551 IB_CQ_NEXT_COMP = 1 << 1,
552 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
553 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
1da177e4
LT
554};
555
96104eda 556enum ib_srq_type {
418d5130
SH
557 IB_SRQT_BASIC,
558 IB_SRQT_XRC
96104eda
SH
559};
560
d41fcc67
RD
561enum ib_srq_attr_mask {
562 IB_SRQ_MAX_WR = 1 << 0,
563 IB_SRQ_LIMIT = 1 << 1,
564};
565
566struct ib_srq_attr {
567 u32 max_wr;
568 u32 max_sge;
569 u32 srq_limit;
570};
571
572struct ib_srq_init_attr {
573 void (*event_handler)(struct ib_event *, void *);
574 void *srq_context;
575 struct ib_srq_attr attr;
96104eda 576 enum ib_srq_type srq_type;
418d5130
SH
577
578 union {
579 struct {
580 struct ib_xrcd *xrcd;
581 struct ib_cq *cq;
582 } xrc;
583 } ext;
d41fcc67
RD
584};
585
1da177e4
LT
586struct ib_qp_cap {
587 u32 max_send_wr;
588 u32 max_recv_wr;
589 u32 max_send_sge;
590 u32 max_recv_sge;
591 u32 max_inline_data;
592};
593
594enum ib_sig_type {
595 IB_SIGNAL_ALL_WR,
596 IB_SIGNAL_REQ_WR
597};
598
599enum ib_qp_type {
600 /*
601 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
602 * here (and in that order) since the MAD layer uses them as
603 * indices into a 2-entry table.
604 */
605 IB_QPT_SMI,
606 IB_QPT_GSI,
607
608 IB_QPT_RC,
609 IB_QPT_UC,
610 IB_QPT_UD,
611 IB_QPT_RAW_IPV6,
b42b63cf 612 IB_QPT_RAW_ETHERTYPE,
c938a616 613 IB_QPT_RAW_PACKET = 8,
b42b63cf
SH
614 IB_QPT_XRC_INI = 9,
615 IB_QPT_XRC_TGT,
0134f16b
JM
616 IB_QPT_MAX,
617 /* Reserve a range for qp types internal to the low level driver.
618 * These qp types will not be visible at the IB core layer, so the
619 * IB_QPT_MAX usages should not be affected in the core layer
620 */
621 IB_QPT_RESERVED1 = 0x1000,
622 IB_QPT_RESERVED2,
623 IB_QPT_RESERVED3,
624 IB_QPT_RESERVED4,
625 IB_QPT_RESERVED5,
626 IB_QPT_RESERVED6,
627 IB_QPT_RESERVED7,
628 IB_QPT_RESERVED8,
629 IB_QPT_RESERVED9,
630 IB_QPT_RESERVED10,
1da177e4
LT
631};
632
b846f25a 633enum ib_qp_create_flags {
47ee1b9f
RL
634 IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0,
635 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
90f1d1b4 636 IB_QP_CREATE_NETIF_QP = 1 << 5,
d2b57063
JM
637 /* reserve bits 26-31 for low level drivers' internal use */
638 IB_QP_CREATE_RESERVED_START = 1 << 26,
639 IB_QP_CREATE_RESERVED_END = 1 << 31,
b846f25a
EC
640};
641
73c40c61
YH
642
643/*
644 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
645 * callback to destroy the passed in QP.
646 */
647
1da177e4
LT
648struct ib_qp_init_attr {
649 void (*event_handler)(struct ib_event *, void *);
650 void *qp_context;
651 struct ib_cq *send_cq;
652 struct ib_cq *recv_cq;
653 struct ib_srq *srq;
b42b63cf 654 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1da177e4
LT
655 struct ib_qp_cap cap;
656 enum ib_sig_type sq_sig_type;
657 enum ib_qp_type qp_type;
b846f25a 658 enum ib_qp_create_flags create_flags;
1da177e4
LT
659 u8 port_num; /* special QP types only */
660};
661
0e0ec7e0
SH
662struct ib_qp_open_attr {
663 void (*event_handler)(struct ib_event *, void *);
664 void *qp_context;
665 u32 qp_num;
666 enum ib_qp_type qp_type;
667};
668
1da177e4
LT
669enum ib_rnr_timeout {
670 IB_RNR_TIMER_655_36 = 0,
671 IB_RNR_TIMER_000_01 = 1,
672 IB_RNR_TIMER_000_02 = 2,
673 IB_RNR_TIMER_000_03 = 3,
674 IB_RNR_TIMER_000_04 = 4,
675 IB_RNR_TIMER_000_06 = 5,
676 IB_RNR_TIMER_000_08 = 6,
677 IB_RNR_TIMER_000_12 = 7,
678 IB_RNR_TIMER_000_16 = 8,
679 IB_RNR_TIMER_000_24 = 9,
680 IB_RNR_TIMER_000_32 = 10,
681 IB_RNR_TIMER_000_48 = 11,
682 IB_RNR_TIMER_000_64 = 12,
683 IB_RNR_TIMER_000_96 = 13,
684 IB_RNR_TIMER_001_28 = 14,
685 IB_RNR_TIMER_001_92 = 15,
686 IB_RNR_TIMER_002_56 = 16,
687 IB_RNR_TIMER_003_84 = 17,
688 IB_RNR_TIMER_005_12 = 18,
689 IB_RNR_TIMER_007_68 = 19,
690 IB_RNR_TIMER_010_24 = 20,
691 IB_RNR_TIMER_015_36 = 21,
692 IB_RNR_TIMER_020_48 = 22,
693 IB_RNR_TIMER_030_72 = 23,
694 IB_RNR_TIMER_040_96 = 24,
695 IB_RNR_TIMER_061_44 = 25,
696 IB_RNR_TIMER_081_92 = 26,
697 IB_RNR_TIMER_122_88 = 27,
698 IB_RNR_TIMER_163_84 = 28,
699 IB_RNR_TIMER_245_76 = 29,
700 IB_RNR_TIMER_327_68 = 30,
701 IB_RNR_TIMER_491_52 = 31
702};
703
704enum ib_qp_attr_mask {
705 IB_QP_STATE = 1,
706 IB_QP_CUR_STATE = (1<<1),
707 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
708 IB_QP_ACCESS_FLAGS = (1<<3),
709 IB_QP_PKEY_INDEX = (1<<4),
710 IB_QP_PORT = (1<<5),
711 IB_QP_QKEY = (1<<6),
712 IB_QP_AV = (1<<7),
713 IB_QP_PATH_MTU = (1<<8),
714 IB_QP_TIMEOUT = (1<<9),
715 IB_QP_RETRY_CNT = (1<<10),
716 IB_QP_RNR_RETRY = (1<<11),
717 IB_QP_RQ_PSN = (1<<12),
718 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
719 IB_QP_ALT_PATH = (1<<14),
720 IB_QP_MIN_RNR_TIMER = (1<<15),
721 IB_QP_SQ_PSN = (1<<16),
722 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
723 IB_QP_PATH_MIG_STATE = (1<<18),
724 IB_QP_CAP = (1<<19),
725 IB_QP_DEST_QPN = (1<<20)
726};
727
728enum ib_qp_state {
729 IB_QPS_RESET,
730 IB_QPS_INIT,
731 IB_QPS_RTR,
732 IB_QPS_RTS,
733 IB_QPS_SQD,
734 IB_QPS_SQE,
735 IB_QPS_ERR
736};
737
738enum ib_mig_state {
739 IB_MIG_MIGRATED,
740 IB_MIG_REARM,
741 IB_MIG_ARMED
742};
743
7083e42e
SM
744enum ib_mw_type {
745 IB_MW_TYPE_1 = 1,
746 IB_MW_TYPE_2 = 2
747};
748
1da177e4
LT
749struct ib_qp_attr {
750 enum ib_qp_state qp_state;
751 enum ib_qp_state cur_qp_state;
752 enum ib_mtu path_mtu;
753 enum ib_mig_state path_mig_state;
754 u32 qkey;
755 u32 rq_psn;
756 u32 sq_psn;
757 u32 dest_qp_num;
758 int qp_access_flags;
759 struct ib_qp_cap cap;
760 struct ib_ah_attr ah_attr;
761 struct ib_ah_attr alt_ah_attr;
762 u16 pkey_index;
763 u16 alt_pkey_index;
764 u8 en_sqd_async_notify;
765 u8 sq_draining;
766 u8 max_rd_atomic;
767 u8 max_dest_rd_atomic;
768 u8 min_rnr_timer;
769 u8 port_num;
770 u8 timeout;
771 u8 retry_cnt;
772 u8 rnr_retry;
773 u8 alt_port_num;
774 u8 alt_timeout;
775};
776
777enum ib_wr_opcode {
778 IB_WR_RDMA_WRITE,
779 IB_WR_RDMA_WRITE_WITH_IMM,
780 IB_WR_SEND,
781 IB_WR_SEND_WITH_IMM,
782 IB_WR_RDMA_READ,
783 IB_WR_ATOMIC_CMP_AND_SWP,
c93570f2 784 IB_WR_ATOMIC_FETCH_AND_ADD,
0f39cf3d
RD
785 IB_WR_LSO,
786 IB_WR_SEND_WITH_INV,
00f7ec36
SW
787 IB_WR_RDMA_READ_WITH_INV,
788 IB_WR_LOCAL_INV,
789 IB_WR_FAST_REG_MR,
5e80ba8f
VS
790 IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
791 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
7083e42e 792 IB_WR_BIND_MW,
0134f16b
JM
793 /* reserve values for low level drivers' internal use.
794 * These values will not be used at all in the ib core layer.
795 */
796 IB_WR_RESERVED1 = 0xf0,
797 IB_WR_RESERVED2,
798 IB_WR_RESERVED3,
799 IB_WR_RESERVED4,
800 IB_WR_RESERVED5,
801 IB_WR_RESERVED6,
802 IB_WR_RESERVED7,
803 IB_WR_RESERVED8,
804 IB_WR_RESERVED9,
805 IB_WR_RESERVED10,
1da177e4
LT
806};
807
808enum ib_send_flags {
809 IB_SEND_FENCE = 1,
810 IB_SEND_SIGNALED = (1<<1),
811 IB_SEND_SOLICITED = (1<<2),
e0605d91 812 IB_SEND_INLINE = (1<<3),
0134f16b
JM
813 IB_SEND_IP_CSUM = (1<<4),
814
815 /* reserve bits 26-31 for low level drivers' internal use */
816 IB_SEND_RESERVED_START = (1 << 26),
817 IB_SEND_RESERVED_END = (1 << 31),
1da177e4
LT
818};
819
820struct ib_sge {
821 u64 addr;
822 u32 length;
823 u32 lkey;
824};
825
00f7ec36
SW
826struct ib_fast_reg_page_list {
827 struct ib_device *device;
828 u64 *page_list;
829 unsigned int max_page_list_len;
830};
831
7083e42e
SM
832/**
833 * struct ib_mw_bind_info - Parameters for a memory window bind operation.
834 * @mr: A memory region to bind the memory window to.
835 * @addr: The address where the memory window should begin.
836 * @length: The length of the memory window, in bytes.
837 * @mw_access_flags: Access flags from enum ib_access_flags for the window.
838 *
839 * This struct contains the shared parameters for type 1 and type 2
840 * memory window bind operations.
841 */
842struct ib_mw_bind_info {
843 struct ib_mr *mr;
844 u64 addr;
845 u64 length;
846 int mw_access_flags;
847};
848
1da177e4
LT
849struct ib_send_wr {
850 struct ib_send_wr *next;
851 u64 wr_id;
852 struct ib_sge *sg_list;
853 int num_sge;
854 enum ib_wr_opcode opcode;
855 int send_flags;
0f39cf3d
RD
856 union {
857 __be32 imm_data;
858 u32 invalidate_rkey;
859 } ex;
1da177e4
LT
860 union {
861 struct {
862 u64 remote_addr;
863 u32 rkey;
864 } rdma;
865 struct {
866 u64 remote_addr;
867 u64 compare_add;
868 u64 swap;
5e80ba8f
VS
869 u64 compare_add_mask;
870 u64 swap_mask;
1da177e4
LT
871 u32 rkey;
872 } atomic;
873 struct {
874 struct ib_ah *ah;
c93570f2
EC
875 void *header;
876 int hlen;
877 int mss;
1da177e4
LT
878 u32 remote_qpn;
879 u32 remote_qkey;
1da177e4
LT
880 u16 pkey_index; /* valid for GSI only */
881 u8 port_num; /* valid for DR SMPs on switch only */
882 } ud;
00f7ec36
SW
883 struct {
884 u64 iova_start;
885 struct ib_fast_reg_page_list *page_list;
886 unsigned int page_shift;
887 unsigned int page_list_len;
888 u32 length;
889 int access_flags;
890 u32 rkey;
891 } fast_reg;
7083e42e
SM
892 struct {
893 struct ib_mw *mw;
894 /* The new rkey for the memory window. */
895 u32 rkey;
896 struct ib_mw_bind_info bind_info;
897 } bind_mw;
1da177e4 898 } wr;
b42b63cf 899 u32 xrc_remote_srq_num; /* XRC TGT QPs only */
1da177e4
LT
900};
901
902struct ib_recv_wr {
903 struct ib_recv_wr *next;
904 u64 wr_id;
905 struct ib_sge *sg_list;
906 int num_sge;
907};
908
909enum ib_access_flags {
910 IB_ACCESS_LOCAL_WRITE = 1,
911 IB_ACCESS_REMOTE_WRITE = (1<<1),
912 IB_ACCESS_REMOTE_READ = (1<<2),
913 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
7083e42e
SM
914 IB_ACCESS_MW_BIND = (1<<4),
915 IB_ZERO_BASED = (1<<5)
1da177e4
LT
916};
917
918struct ib_phys_buf {
919 u64 addr;
920 u64 size;
921};
922
923struct ib_mr_attr {
924 struct ib_pd *pd;
925 u64 device_virt_addr;
926 u64 size;
927 int mr_access_flags;
928 u32 lkey;
929 u32 rkey;
930};
931
932enum ib_mr_rereg_flags {
933 IB_MR_REREG_TRANS = 1,
934 IB_MR_REREG_PD = (1<<1),
935 IB_MR_REREG_ACCESS = (1<<2)
936};
937
7083e42e
SM
938/**
939 * struct ib_mw_bind - Parameters for a type 1 memory window bind operation.
940 * @wr_id: Work request id.
941 * @send_flags: Flags from ib_send_flags enum.
942 * @bind_info: More parameters of the bind operation.
943 */
1da177e4 944struct ib_mw_bind {
7083e42e
SM
945 u64 wr_id;
946 int send_flags;
947 struct ib_mw_bind_info bind_info;
1da177e4
LT
948};
949
950struct ib_fmr_attr {
951 int max_pages;
952 int max_maps;
d36f34aa 953 u8 page_shift;
1da177e4
LT
954};
955
e2773c06
RD
956struct ib_ucontext {
957 struct ib_device *device;
958 struct list_head pd_list;
959 struct list_head mr_list;
960 struct list_head mw_list;
961 struct list_head cq_list;
962 struct list_head qp_list;
963 struct list_head srq_list;
964 struct list_head ah_list;
53d0bd1e 965 struct list_head xrcd_list;
436f2ad0 966 struct list_head rule_list;
f7c6a7b5 967 int closing;
e2773c06
RD
968};
969
970struct ib_uobject {
971 u64 user_handle; /* handle given to us by userspace */
972 struct ib_ucontext *context; /* associated user context */
9ead190b 973 void *object; /* containing object */
e2773c06 974 struct list_head list; /* link to context's list */
b3d636b0 975 int id; /* index into kernel idr */
9ead190b
RD
976 struct kref ref;
977 struct rw_semaphore mutex; /* protects .live */
978 int live;
e2773c06
RD
979};
980
e2773c06 981struct ib_udata {
309243ec 982 const void __user *inbuf;
e2773c06
RD
983 void __user *outbuf;
984 size_t inlen;
985 size_t outlen;
986};
987
1da177e4 988struct ib_pd {
e2773c06
RD
989 struct ib_device *device;
990 struct ib_uobject *uobject;
991 atomic_t usecnt; /* count all resources */
1da177e4
LT
992};
993
59991f94
SH
994struct ib_xrcd {
995 struct ib_device *device;
d3d72d90 996 atomic_t usecnt; /* count all exposed resources */
53d0bd1e 997 struct inode *inode;
d3d72d90
SH
998
999 struct mutex tgt_qp_mutex;
1000 struct list_head tgt_qp_list;
59991f94
SH
1001};
1002
1da177e4
LT
1003struct ib_ah {
1004 struct ib_device *device;
1005 struct ib_pd *pd;
e2773c06 1006 struct ib_uobject *uobject;
1da177e4
LT
1007};
1008
1009typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
1010
1011struct ib_cq {
e2773c06
RD
1012 struct ib_device *device;
1013 struct ib_uobject *uobject;
1014 ib_comp_handler comp_handler;
1015 void (*event_handler)(struct ib_event *, void *);
4deccd6d 1016 void *cq_context;
e2773c06
RD
1017 int cqe;
1018 atomic_t usecnt; /* count number of work queues */
1da177e4
LT
1019};
1020
1021struct ib_srq {
d41fcc67
RD
1022 struct ib_device *device;
1023 struct ib_pd *pd;
1024 struct ib_uobject *uobject;
1025 void (*event_handler)(struct ib_event *, void *);
1026 void *srq_context;
96104eda 1027 enum ib_srq_type srq_type;
1da177e4 1028 atomic_t usecnt;
418d5130
SH
1029
1030 union {
1031 struct {
1032 struct ib_xrcd *xrcd;
1033 struct ib_cq *cq;
1034 u32 srq_num;
1035 } xrc;
1036 } ext;
1da177e4
LT
1037};
1038
1039struct ib_qp {
1040 struct ib_device *device;
1041 struct ib_pd *pd;
1042 struct ib_cq *send_cq;
1043 struct ib_cq *recv_cq;
1044 struct ib_srq *srq;
b42b63cf 1045 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
d3d72d90 1046 struct list_head xrcd_list;
319a441d
HHZ
1047 /* count times opened, mcast attaches, flow attaches */
1048 atomic_t usecnt;
0e0ec7e0
SH
1049 struct list_head open_list;
1050 struct ib_qp *real_qp;
e2773c06 1051 struct ib_uobject *uobject;
1da177e4
LT
1052 void (*event_handler)(struct ib_event *, void *);
1053 void *qp_context;
1054 u32 qp_num;
1055 enum ib_qp_type qp_type;
1056};
1057
1058struct ib_mr {
e2773c06
RD
1059 struct ib_device *device;
1060 struct ib_pd *pd;
1061 struct ib_uobject *uobject;
1062 u32 lkey;
1063 u32 rkey;
1064 atomic_t usecnt; /* count number of MWs */
1da177e4
LT
1065};
1066
1067struct ib_mw {
1068 struct ib_device *device;
1069 struct ib_pd *pd;
e2773c06 1070 struct ib_uobject *uobject;
1da177e4 1071 u32 rkey;
7083e42e 1072 enum ib_mw_type type;
1da177e4
LT
1073};
1074
1075struct ib_fmr {
1076 struct ib_device *device;
1077 struct ib_pd *pd;
1078 struct list_head list;
1079 u32 lkey;
1080 u32 rkey;
1081};
1082
319a441d
HHZ
1083/* Supported steering options */
1084enum ib_flow_attr_type {
1085 /* steering according to rule specifications */
1086 IB_FLOW_ATTR_NORMAL = 0x0,
1087 /* default unicast and multicast rule -
1088 * receive all Eth traffic which isn't steered to any QP
1089 */
1090 IB_FLOW_ATTR_ALL_DEFAULT = 0x1,
1091 /* default multicast rule -
1092 * receive all Eth multicast traffic which isn't steered to any QP
1093 */
1094 IB_FLOW_ATTR_MC_DEFAULT = 0x2,
1095 /* sniffer rule - receive all port traffic */
1096 IB_FLOW_ATTR_SNIFFER = 0x3
1097};
1098
1099/* Supported steering header types */
1100enum ib_flow_spec_type {
1101 /* L2 headers*/
1102 IB_FLOW_SPEC_ETH = 0x20,
1103 /* L3 header*/
1104 IB_FLOW_SPEC_IPV4 = 0x30,
1105 /* L4 headers*/
1106 IB_FLOW_SPEC_TCP = 0x40,
1107 IB_FLOW_SPEC_UDP = 0x41
1108};
1109
22878dbc
MB
1110#define IB_FLOW_SPEC_SUPPORT_LAYERS 4
1111
319a441d
HHZ
1112/* Flow steering rule priority is set according to it's domain.
1113 * Lower domain value means higher priority.
1114 */
1115enum ib_flow_domain {
1116 IB_FLOW_DOMAIN_USER,
1117 IB_FLOW_DOMAIN_ETHTOOL,
1118 IB_FLOW_DOMAIN_RFS,
1119 IB_FLOW_DOMAIN_NIC,
1120 IB_FLOW_DOMAIN_NUM /* Must be last */
1121};
1122
1123struct ib_flow_eth_filter {
1124 u8 dst_mac[6];
1125 u8 src_mac[6];
1126 __be16 ether_type;
1127 __be16 vlan_tag;
1128};
1129
1130struct ib_flow_spec_eth {
1131 enum ib_flow_spec_type type;
1132 u16 size;
1133 struct ib_flow_eth_filter val;
1134 struct ib_flow_eth_filter mask;
1135};
1136
1137struct ib_flow_ipv4_filter {
1138 __be32 src_ip;
1139 __be32 dst_ip;
1140};
1141
1142struct ib_flow_spec_ipv4 {
1143 enum ib_flow_spec_type type;
1144 u16 size;
1145 struct ib_flow_ipv4_filter val;
1146 struct ib_flow_ipv4_filter mask;
1147};
1148
1149struct ib_flow_tcp_udp_filter {
1150 __be16 dst_port;
1151 __be16 src_port;
1152};
1153
1154struct ib_flow_spec_tcp_udp {
1155 enum ib_flow_spec_type type;
1156 u16 size;
1157 struct ib_flow_tcp_udp_filter val;
1158 struct ib_flow_tcp_udp_filter mask;
1159};
1160
1161union ib_flow_spec {
1162 struct {
1163 enum ib_flow_spec_type type;
1164 u16 size;
1165 };
1166 struct ib_flow_spec_eth eth;
1167 struct ib_flow_spec_ipv4 ipv4;
1168 struct ib_flow_spec_tcp_udp tcp_udp;
1169};
1170
1171struct ib_flow_attr {
1172 enum ib_flow_attr_type type;
1173 u16 size;
1174 u16 priority;
1175 u32 flags;
1176 u8 num_of_specs;
1177 u8 port;
1178 /* Following are the optional layers according to user request
1179 * struct ib_flow_spec_xxx
1180 * struct ib_flow_spec_yyy
1181 */
1182};
1183
1184struct ib_flow {
1185 struct ib_qp *qp;
1186 struct ib_uobject *uobject;
1187};
1188
1da177e4
LT
1189struct ib_mad;
1190struct ib_grh;
1191
1192enum ib_process_mad_flags {
1193 IB_MAD_IGNORE_MKEY = 1,
1194 IB_MAD_IGNORE_BKEY = 2,
1195 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
1196};
1197
1198enum ib_mad_result {
1199 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
1200 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
1201 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
1202 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
1203};
1204
1205#define IB_DEVICE_NAME_MAX 64
1206
1207struct ib_cache {
1208 rwlock_t lock;
1209 struct ib_event_handler event_handler;
1210 struct ib_pkey_cache **pkey_cache;
1211 struct ib_gid_cache **gid_cache;
6fb9cdbf 1212 u8 *lmc_cache;
1da177e4
LT
1213};
1214
9b513090
RC
1215struct ib_dma_mapping_ops {
1216 int (*mapping_error)(struct ib_device *dev,
1217 u64 dma_addr);
1218 u64 (*map_single)(struct ib_device *dev,
1219 void *ptr, size_t size,
1220 enum dma_data_direction direction);
1221 void (*unmap_single)(struct ib_device *dev,
1222 u64 addr, size_t size,
1223 enum dma_data_direction direction);
1224 u64 (*map_page)(struct ib_device *dev,
1225 struct page *page, unsigned long offset,
1226 size_t size,
1227 enum dma_data_direction direction);
1228 void (*unmap_page)(struct ib_device *dev,
1229 u64 addr, size_t size,
1230 enum dma_data_direction direction);
1231 int (*map_sg)(struct ib_device *dev,
1232 struct scatterlist *sg, int nents,
1233 enum dma_data_direction direction);
1234 void (*unmap_sg)(struct ib_device *dev,
1235 struct scatterlist *sg, int nents,
1236 enum dma_data_direction direction);
1237 u64 (*dma_address)(struct ib_device *dev,
1238 struct scatterlist *sg);
1239 unsigned int (*dma_len)(struct ib_device *dev,
1240 struct scatterlist *sg);
1241 void (*sync_single_for_cpu)(struct ib_device *dev,
1242 u64 dma_handle,
1243 size_t size,
4deccd6d 1244 enum dma_data_direction dir);
9b513090
RC
1245 void (*sync_single_for_device)(struct ib_device *dev,
1246 u64 dma_handle,
1247 size_t size,
1248 enum dma_data_direction dir);
1249 void *(*alloc_coherent)(struct ib_device *dev,
1250 size_t size,
1251 u64 *dma_handle,
1252 gfp_t flag);
1253 void (*free_coherent)(struct ib_device *dev,
1254 size_t size, void *cpu_addr,
1255 u64 dma_handle);
1256};
1257
07ebafba
TT
1258struct iw_cm_verbs;
1259
1da177e4
LT
1260struct ib_device {
1261 struct device *dma_device;
1262
1263 char name[IB_DEVICE_NAME_MAX];
1264
1265 struct list_head event_handler_list;
1266 spinlock_t event_handler_lock;
1267
17a55f79 1268 spinlock_t client_data_lock;
1da177e4
LT
1269 struct list_head core_list;
1270 struct list_head client_data_list;
1da177e4
LT
1271
1272 struct ib_cache cache;
5eb620c8
YE
1273 int *pkey_tbl_len;
1274 int *gid_tbl_len;
1da177e4 1275
f4fd0b22
MT
1276 int num_comp_vectors;
1277
07ebafba
TT
1278 struct iw_cm_verbs *iwcm;
1279
7f624d02
SW
1280 int (*get_protocol_stats)(struct ib_device *device,
1281 union rdma_protocol_stats *stats);
1da177e4
LT
1282 int (*query_device)(struct ib_device *device,
1283 struct ib_device_attr *device_attr);
1284 int (*query_port)(struct ib_device *device,
1285 u8 port_num,
1286 struct ib_port_attr *port_attr);
a3f5adaf
EC
1287 enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
1288 u8 port_num);
1da177e4
LT
1289 int (*query_gid)(struct ib_device *device,
1290 u8 port_num, int index,
1291 union ib_gid *gid);
1292 int (*query_pkey)(struct ib_device *device,
1293 u8 port_num, u16 index, u16 *pkey);
1294 int (*modify_device)(struct ib_device *device,
1295 int device_modify_mask,
1296 struct ib_device_modify *device_modify);
1297 int (*modify_port)(struct ib_device *device,
1298 u8 port_num, int port_modify_mask,
1299 struct ib_port_modify *port_modify);
e2773c06
RD
1300 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
1301 struct ib_udata *udata);
1302 int (*dealloc_ucontext)(struct ib_ucontext *context);
1303 int (*mmap)(struct ib_ucontext *context,
1304 struct vm_area_struct *vma);
1305 struct ib_pd * (*alloc_pd)(struct ib_device *device,
1306 struct ib_ucontext *context,
1307 struct ib_udata *udata);
1da177e4
LT
1308 int (*dealloc_pd)(struct ib_pd *pd);
1309 struct ib_ah * (*create_ah)(struct ib_pd *pd,
1310 struct ib_ah_attr *ah_attr);
1311 int (*modify_ah)(struct ib_ah *ah,
1312 struct ib_ah_attr *ah_attr);
1313 int (*query_ah)(struct ib_ah *ah,
1314 struct ib_ah_attr *ah_attr);
1315 int (*destroy_ah)(struct ib_ah *ah);
d41fcc67
RD
1316 struct ib_srq * (*create_srq)(struct ib_pd *pd,
1317 struct ib_srq_init_attr *srq_init_attr,
1318 struct ib_udata *udata);
1319 int (*modify_srq)(struct ib_srq *srq,
1320 struct ib_srq_attr *srq_attr,
9bc57e2d
RC
1321 enum ib_srq_attr_mask srq_attr_mask,
1322 struct ib_udata *udata);
d41fcc67
RD
1323 int (*query_srq)(struct ib_srq *srq,
1324 struct ib_srq_attr *srq_attr);
1325 int (*destroy_srq)(struct ib_srq *srq);
1326 int (*post_srq_recv)(struct ib_srq *srq,
1327 struct ib_recv_wr *recv_wr,
1328 struct ib_recv_wr **bad_recv_wr);
1da177e4 1329 struct ib_qp * (*create_qp)(struct ib_pd *pd,
e2773c06
RD
1330 struct ib_qp_init_attr *qp_init_attr,
1331 struct ib_udata *udata);
1da177e4
LT
1332 int (*modify_qp)(struct ib_qp *qp,
1333 struct ib_qp_attr *qp_attr,
9bc57e2d
RC
1334 int qp_attr_mask,
1335 struct ib_udata *udata);
1da177e4
LT
1336 int (*query_qp)(struct ib_qp *qp,
1337 struct ib_qp_attr *qp_attr,
1338 int qp_attr_mask,
1339 struct ib_qp_init_attr *qp_init_attr);
1340 int (*destroy_qp)(struct ib_qp *qp);
1341 int (*post_send)(struct ib_qp *qp,
1342 struct ib_send_wr *send_wr,
1343 struct ib_send_wr **bad_send_wr);
1344 int (*post_recv)(struct ib_qp *qp,
1345 struct ib_recv_wr *recv_wr,
1346 struct ib_recv_wr **bad_recv_wr);
e2773c06 1347 struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
f4fd0b22 1348 int comp_vector,
e2773c06
RD
1349 struct ib_ucontext *context,
1350 struct ib_udata *udata);
2dd57162
EC
1351 int (*modify_cq)(struct ib_cq *cq, u16 cq_count,
1352 u16 cq_period);
1da177e4 1353 int (*destroy_cq)(struct ib_cq *cq);
33b9b3ee
RD
1354 int (*resize_cq)(struct ib_cq *cq, int cqe,
1355 struct ib_udata *udata);
1da177e4
LT
1356 int (*poll_cq)(struct ib_cq *cq, int num_entries,
1357 struct ib_wc *wc);
1358 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
1359 int (*req_notify_cq)(struct ib_cq *cq,
ed23a727 1360 enum ib_cq_notify_flags flags);
1da177e4
LT
1361 int (*req_ncomp_notif)(struct ib_cq *cq,
1362 int wc_cnt);
1363 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
1364 int mr_access_flags);
1365 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
1366 struct ib_phys_buf *phys_buf_array,
1367 int num_phys_buf,
1368 int mr_access_flags,
1369 u64 *iova_start);
e2773c06 1370 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
f7c6a7b5
RD
1371 u64 start, u64 length,
1372 u64 virt_addr,
e2773c06
RD
1373 int mr_access_flags,
1374 struct ib_udata *udata);
1da177e4
LT
1375 int (*query_mr)(struct ib_mr *mr,
1376 struct ib_mr_attr *mr_attr);
1377 int (*dereg_mr)(struct ib_mr *mr);
00f7ec36
SW
1378 struct ib_mr * (*alloc_fast_reg_mr)(struct ib_pd *pd,
1379 int max_page_list_len);
1380 struct ib_fast_reg_page_list * (*alloc_fast_reg_page_list)(struct ib_device *device,
1381 int page_list_len);
1382 void (*free_fast_reg_page_list)(struct ib_fast_reg_page_list *page_list);
1da177e4
LT
1383 int (*rereg_phys_mr)(struct ib_mr *mr,
1384 int mr_rereg_mask,
1385 struct ib_pd *pd,
1386 struct ib_phys_buf *phys_buf_array,
1387 int num_phys_buf,
1388 int mr_access_flags,
1389 u64 *iova_start);
7083e42e
SM
1390 struct ib_mw * (*alloc_mw)(struct ib_pd *pd,
1391 enum ib_mw_type type);
1da177e4
LT
1392 int (*bind_mw)(struct ib_qp *qp,
1393 struct ib_mw *mw,
1394 struct ib_mw_bind *mw_bind);
1395 int (*dealloc_mw)(struct ib_mw *mw);
1396 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
1397 int mr_access_flags,
1398 struct ib_fmr_attr *fmr_attr);
1399 int (*map_phys_fmr)(struct ib_fmr *fmr,
1400 u64 *page_list, int list_len,
1401 u64 iova);
1402 int (*unmap_fmr)(struct list_head *fmr_list);
1403 int (*dealloc_fmr)(struct ib_fmr *fmr);
1404 int (*attach_mcast)(struct ib_qp *qp,
1405 union ib_gid *gid,
1406 u16 lid);
1407 int (*detach_mcast)(struct ib_qp *qp,
1408 union ib_gid *gid,
1409 u16 lid);
1410 int (*process_mad)(struct ib_device *device,
1411 int process_mad_flags,
1412 u8 port_num,
1413 struct ib_wc *in_wc,
1414 struct ib_grh *in_grh,
1415 struct ib_mad *in_mad,
1416 struct ib_mad *out_mad);
59991f94
SH
1417 struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device,
1418 struct ib_ucontext *ucontext,
1419 struct ib_udata *udata);
1420 int (*dealloc_xrcd)(struct ib_xrcd *xrcd);
319a441d
HHZ
1421 struct ib_flow * (*create_flow)(struct ib_qp *qp,
1422 struct ib_flow_attr
1423 *flow_attr,
1424 int domain);
1425 int (*destroy_flow)(struct ib_flow *flow_id);
1da177e4 1426
9b513090
RC
1427 struct ib_dma_mapping_ops *dma_ops;
1428
e2773c06 1429 struct module *owner;
f4e91eb4 1430 struct device dev;
35be0681 1431 struct kobject *ports_parent;
1da177e4
LT
1432 struct list_head port_list;
1433
1434 enum {
1435 IB_DEV_UNINITIALIZED,
1436 IB_DEV_REGISTERED,
1437 IB_DEV_UNREGISTERED
1438 } reg_state;
1439
274c0891 1440 int uverbs_abi_ver;
17a55f79 1441 u64 uverbs_cmd_mask;
f21519b2 1442 u64 uverbs_ex_cmd_mask;
274c0891 1443
c5bcbbb9 1444 char node_desc[64];
cf311cd4 1445 __be64 node_guid;
96f15c03 1446 u32 local_dma_lkey;
1da177e4
LT
1447 u8 node_type;
1448 u8 phys_port_cnt;
1449};
1450
1451struct ib_client {
1452 char *name;
1453 void (*add) (struct ib_device *);
1454 void (*remove)(struct ib_device *);
1455
1456 struct list_head list;
1457};
1458
1459struct ib_device *ib_alloc_device(size_t size);
1460void ib_dealloc_device(struct ib_device *device);
1461
9a6edb60
RC
1462int ib_register_device(struct ib_device *device,
1463 int (*port_callback)(struct ib_device *,
1464 u8, struct kobject *));
1da177e4
LT
1465void ib_unregister_device(struct ib_device *device);
1466
1467int ib_register_client (struct ib_client *client);
1468void ib_unregister_client(struct ib_client *client);
1469
1470void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
1471void ib_set_client_data(struct ib_device *device, struct ib_client *client,
1472 void *data);
1473
e2773c06
RD
1474static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
1475{
1476 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
1477}
1478
1479static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
1480{
1481 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
1482}
1483
8a51866f
RD
1484/**
1485 * ib_modify_qp_is_ok - Check that the supplied attribute mask
1486 * contains all required attributes and no attributes not allowed for
1487 * the given QP state transition.
1488 * @cur_state: Current QP state
1489 * @next_state: Next QP state
1490 * @type: QP type
1491 * @mask: Mask of supplied QP attributes
1492 *
1493 * This function is a helper function that a low-level driver's
1494 * modify_qp method can use to validate the consumer's input. It
1495 * checks that cur_state and next_state are valid QP states, that a
1496 * transition from cur_state to next_state is allowed by the IB spec,
1497 * and that the attribute mask supplied is allowed for the transition.
1498 */
1499int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
1500 enum ib_qp_type type, enum ib_qp_attr_mask mask);
1501
1da177e4
LT
1502int ib_register_event_handler (struct ib_event_handler *event_handler);
1503int ib_unregister_event_handler(struct ib_event_handler *event_handler);
1504void ib_dispatch_event(struct ib_event *event);
1505
1506int ib_query_device(struct ib_device *device,
1507 struct ib_device_attr *device_attr);
1508
1509int ib_query_port(struct ib_device *device,
1510 u8 port_num, struct ib_port_attr *port_attr);
1511
a3f5adaf
EC
1512enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
1513 u8 port_num);
1514
1da177e4
LT
1515int ib_query_gid(struct ib_device *device,
1516 u8 port_num, int index, union ib_gid *gid);
1517
1518int ib_query_pkey(struct ib_device *device,
1519 u8 port_num, u16 index, u16 *pkey);
1520
1521int ib_modify_device(struct ib_device *device,
1522 int device_modify_mask,
1523 struct ib_device_modify *device_modify);
1524
1525int ib_modify_port(struct ib_device *device,
1526 u8 port_num, int port_modify_mask,
1527 struct ib_port_modify *port_modify);
1528
5eb620c8
YE
1529int ib_find_gid(struct ib_device *device, union ib_gid *gid,
1530 u8 *port_num, u16 *index);
1531
1532int ib_find_pkey(struct ib_device *device,
1533 u8 port_num, u16 pkey, u16 *index);
1534
1da177e4
LT
1535/**
1536 * ib_alloc_pd - Allocates an unused protection domain.
1537 * @device: The device on which to allocate the protection domain.
1538 *
1539 * A protection domain object provides an association between QPs, shared
1540 * receive queues, address handles, memory regions, and memory windows.
1541 */
1542struct ib_pd *ib_alloc_pd(struct ib_device *device);
1543
1544/**
1545 * ib_dealloc_pd - Deallocates a protection domain.
1546 * @pd: The protection domain to deallocate.
1547 */
1548int ib_dealloc_pd(struct ib_pd *pd);
1549
1550/**
1551 * ib_create_ah - Creates an address handle for the given address vector.
1552 * @pd: The protection domain associated with the address handle.
1553 * @ah_attr: The attributes of the address vector.
1554 *
1555 * The address handle is used to reference a local or global destination
1556 * in all UD QP post sends.
1557 */
1558struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
1559
4e00d694
SH
1560/**
1561 * ib_init_ah_from_wc - Initializes address handle attributes from a
1562 * work completion.
1563 * @device: Device on which the received message arrived.
1564 * @port_num: Port on which the received message arrived.
1565 * @wc: Work completion associated with the received message.
1566 * @grh: References the received global route header. This parameter is
1567 * ignored unless the work completion indicates that the GRH is valid.
1568 * @ah_attr: Returned attributes that can be used when creating an address
1569 * handle for replying to the message.
1570 */
1571int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
1572 struct ib_grh *grh, struct ib_ah_attr *ah_attr);
1573
513789ed
HR
1574/**
1575 * ib_create_ah_from_wc - Creates an address handle associated with the
1576 * sender of the specified work completion.
1577 * @pd: The protection domain associated with the address handle.
1578 * @wc: Work completion information associated with a received message.
1579 * @grh: References the received global route header. This parameter is
1580 * ignored unless the work completion indicates that the GRH is valid.
1581 * @port_num: The outbound port number to associate with the address.
1582 *
1583 * The address handle is used to reference a local or global destination
1584 * in all UD QP post sends.
1585 */
1586struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
1587 struct ib_grh *grh, u8 port_num);
1588
1da177e4
LT
1589/**
1590 * ib_modify_ah - Modifies the address vector associated with an address
1591 * handle.
1592 * @ah: The address handle to modify.
1593 * @ah_attr: The new address vector attributes to associate with the
1594 * address handle.
1595 */
1596int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1597
1598/**
1599 * ib_query_ah - Queries the address vector associated with an address
1600 * handle.
1601 * @ah: The address handle to query.
1602 * @ah_attr: The address vector attributes associated with the address
1603 * handle.
1604 */
1605int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1606
1607/**
1608 * ib_destroy_ah - Destroys an address handle.
1609 * @ah: The address handle to destroy.
1610 */
1611int ib_destroy_ah(struct ib_ah *ah);
1612
d41fcc67
RD
1613/**
1614 * ib_create_srq - Creates a SRQ associated with the specified protection
1615 * domain.
1616 * @pd: The protection domain associated with the SRQ.
abb6e9ba
DB
1617 * @srq_init_attr: A list of initial attributes required to create the
1618 * SRQ. If SRQ creation succeeds, then the attributes are updated to
1619 * the actual capabilities of the created SRQ.
d41fcc67
RD
1620 *
1621 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
1622 * requested size of the SRQ, and set to the actual values allocated
1623 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
1624 * will always be at least as large as the requested values.
1625 */
1626struct ib_srq *ib_create_srq(struct ib_pd *pd,
1627 struct ib_srq_init_attr *srq_init_attr);
1628
1629/**
1630 * ib_modify_srq - Modifies the attributes for the specified SRQ.
1631 * @srq: The SRQ to modify.
1632 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
1633 * the current values of selected SRQ attributes are returned.
1634 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
1635 * are being modified.
1636 *
1637 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
1638 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
1639 * the number of receives queued drops below the limit.
1640 */
1641int ib_modify_srq(struct ib_srq *srq,
1642 struct ib_srq_attr *srq_attr,
1643 enum ib_srq_attr_mask srq_attr_mask);
1644
1645/**
1646 * ib_query_srq - Returns the attribute list and current values for the
1647 * specified SRQ.
1648 * @srq: The SRQ to query.
1649 * @srq_attr: The attributes of the specified SRQ.
1650 */
1651int ib_query_srq(struct ib_srq *srq,
1652 struct ib_srq_attr *srq_attr);
1653
1654/**
1655 * ib_destroy_srq - Destroys the specified SRQ.
1656 * @srq: The SRQ to destroy.
1657 */
1658int ib_destroy_srq(struct ib_srq *srq);
1659
1660/**
1661 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
1662 * @srq: The SRQ to post the work request on.
1663 * @recv_wr: A list of work requests to post on the receive queue.
1664 * @bad_recv_wr: On an immediate failure, this parameter will reference
1665 * the work request that failed to be posted on the QP.
1666 */
1667static inline int ib_post_srq_recv(struct ib_srq *srq,
1668 struct ib_recv_wr *recv_wr,
1669 struct ib_recv_wr **bad_recv_wr)
1670{
1671 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
1672}
1673
1da177e4
LT
1674/**
1675 * ib_create_qp - Creates a QP associated with the specified protection
1676 * domain.
1677 * @pd: The protection domain associated with the QP.
abb6e9ba
DB
1678 * @qp_init_attr: A list of initial attributes required to create the
1679 * QP. If QP creation succeeds, then the attributes are updated to
1680 * the actual capabilities of the created QP.
1da177e4
LT
1681 */
1682struct ib_qp *ib_create_qp(struct ib_pd *pd,
1683 struct ib_qp_init_attr *qp_init_attr);
1684
1685/**
1686 * ib_modify_qp - Modifies the attributes for the specified QP and then
1687 * transitions the QP to the given state.
1688 * @qp: The QP to modify.
1689 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1690 * the current values of selected QP attributes are returned.
1691 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1692 * are being modified.
1693 */
1694int ib_modify_qp(struct ib_qp *qp,
1695 struct ib_qp_attr *qp_attr,
1696 int qp_attr_mask);
1697
1698/**
1699 * ib_query_qp - Returns the attribute list and current values for the
1700 * specified QP.
1701 * @qp: The QP to query.
1702 * @qp_attr: The attributes of the specified QP.
1703 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1704 * @qp_init_attr: Additional attributes of the selected QP.
1705 *
1706 * The qp_attr_mask may be used to limit the query to gathering only the
1707 * selected attributes.
1708 */
1709int ib_query_qp(struct ib_qp *qp,
1710 struct ib_qp_attr *qp_attr,
1711 int qp_attr_mask,
1712 struct ib_qp_init_attr *qp_init_attr);
1713
1714/**
1715 * ib_destroy_qp - Destroys the specified QP.
1716 * @qp: The QP to destroy.
1717 */
1718int ib_destroy_qp(struct ib_qp *qp);
1719
d3d72d90 1720/**
0e0ec7e0
SH
1721 * ib_open_qp - Obtain a reference to an existing sharable QP.
1722 * @xrcd - XRC domain
1723 * @qp_open_attr: Attributes identifying the QP to open.
1724 *
1725 * Returns a reference to a sharable QP.
1726 */
1727struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
1728 struct ib_qp_open_attr *qp_open_attr);
1729
1730/**
1731 * ib_close_qp - Release an external reference to a QP.
d3d72d90
SH
1732 * @qp: The QP handle to release
1733 *
0e0ec7e0
SH
1734 * The opened QP handle is released by the caller. The underlying
1735 * shared QP is not destroyed until all internal references are released.
d3d72d90 1736 */
0e0ec7e0 1737int ib_close_qp(struct ib_qp *qp);
d3d72d90 1738
1da177e4
LT
1739/**
1740 * ib_post_send - Posts a list of work requests to the send queue of
1741 * the specified QP.
1742 * @qp: The QP to post the work request on.
1743 * @send_wr: A list of work requests to post on the send queue.
1744 * @bad_send_wr: On an immediate failure, this parameter will reference
1745 * the work request that failed to be posted on the QP.
55464d46
BVA
1746 *
1747 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
1748 * error is returned, the QP state shall not be affected,
1749 * ib_post_send() will return an immediate error after queueing any
1750 * earlier work requests in the list.
1da177e4
LT
1751 */
1752static inline int ib_post_send(struct ib_qp *qp,
1753 struct ib_send_wr *send_wr,
1754 struct ib_send_wr **bad_send_wr)
1755{
1756 return qp->device->post_send(qp, send_wr, bad_send_wr);
1757}
1758
1759/**
1760 * ib_post_recv - Posts a list of work requests to the receive queue of
1761 * the specified QP.
1762 * @qp: The QP to post the work request on.
1763 * @recv_wr: A list of work requests to post on the receive queue.
1764 * @bad_recv_wr: On an immediate failure, this parameter will reference
1765 * the work request that failed to be posted on the QP.
1766 */
1767static inline int ib_post_recv(struct ib_qp *qp,
1768 struct ib_recv_wr *recv_wr,
1769 struct ib_recv_wr **bad_recv_wr)
1770{
1771 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
1772}
1773
1774/**
1775 * ib_create_cq - Creates a CQ on the specified device.
1776 * @device: The device on which to create the CQ.
1777 * @comp_handler: A user-specified callback that is invoked when a
1778 * completion event occurs on the CQ.
1779 * @event_handler: A user-specified callback that is invoked when an
1780 * asynchronous event not associated with a completion occurs on the CQ.
1781 * @cq_context: Context associated with the CQ returned to the user via
1782 * the associated completion and event handlers.
1783 * @cqe: The minimum size of the CQ.
f4fd0b22
MT
1784 * @comp_vector - Completion vector used to signal completion events.
1785 * Must be >= 0 and < context->num_comp_vectors.
1da177e4
LT
1786 *
1787 * Users can examine the cq structure to determine the actual CQ size.
1788 */
1789struct ib_cq *ib_create_cq(struct ib_device *device,
1790 ib_comp_handler comp_handler,
1791 void (*event_handler)(struct ib_event *, void *),
f4fd0b22 1792 void *cq_context, int cqe, int comp_vector);
1da177e4
LT
1793
1794/**
1795 * ib_resize_cq - Modifies the capacity of the CQ.
1796 * @cq: The CQ to resize.
1797 * @cqe: The minimum size of the CQ.
1798 *
1799 * Users can examine the cq structure to determine the actual CQ size.
1800 */
1801int ib_resize_cq(struct ib_cq *cq, int cqe);
1802
2dd57162
EC
1803/**
1804 * ib_modify_cq - Modifies moderation params of the CQ
1805 * @cq: The CQ to modify.
1806 * @cq_count: number of CQEs that will trigger an event
1807 * @cq_period: max period of time in usec before triggering an event
1808 *
1809 */
1810int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
1811
1da177e4
LT
1812/**
1813 * ib_destroy_cq - Destroys the specified CQ.
1814 * @cq: The CQ to destroy.
1815 */
1816int ib_destroy_cq(struct ib_cq *cq);
1817
1818/**
1819 * ib_poll_cq - poll a CQ for completion(s)
1820 * @cq:the CQ being polled
1821 * @num_entries:maximum number of completions to return
1822 * @wc:array of at least @num_entries &struct ib_wc where completions
1823 * will be returned
1824 *
1825 * Poll a CQ for (possibly multiple) completions. If the return value
1826 * is < 0, an error occurred. If the return value is >= 0, it is the
1827 * number of completions returned. If the return value is
1828 * non-negative and < num_entries, then the CQ was emptied.
1829 */
1830static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
1831 struct ib_wc *wc)
1832{
1833 return cq->device->poll_cq(cq, num_entries, wc);
1834}
1835
1836/**
1837 * ib_peek_cq - Returns the number of unreaped completions currently
1838 * on the specified CQ.
1839 * @cq: The CQ to peek.
1840 * @wc_cnt: A minimum number of unreaped completions to check for.
1841 *
1842 * If the number of unreaped completions is greater than or equal to wc_cnt,
1843 * this function returns wc_cnt, otherwise, it returns the actual number of
1844 * unreaped completions.
1845 */
1846int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
1847
1848/**
1849 * ib_req_notify_cq - Request completion notification on a CQ.
1850 * @cq: The CQ to generate an event for.
ed23a727
RD
1851 * @flags:
1852 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
1853 * to request an event on the next solicited event or next work
1854 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
1855 * may also be |ed in to request a hint about missed events, as
1856 * described below.
1857 *
1858 * Return Value:
1859 * < 0 means an error occurred while requesting notification
1860 * == 0 means notification was requested successfully, and if
1861 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
1862 * were missed and it is safe to wait for another event. In
1863 * this case is it guaranteed that any work completions added
1864 * to the CQ since the last CQ poll will trigger a completion
1865 * notification event.
1866 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
1867 * in. It means that the consumer must poll the CQ again to
1868 * make sure it is empty to avoid missing an event because of a
1869 * race between requesting notification and an entry being
1870 * added to the CQ. This return value means it is possible
1871 * (but not guaranteed) that a work completion has been added
1872 * to the CQ since the last poll without triggering a
1873 * completion notification event.
1da177e4
LT
1874 */
1875static inline int ib_req_notify_cq(struct ib_cq *cq,
ed23a727 1876 enum ib_cq_notify_flags flags)
1da177e4 1877{
ed23a727 1878 return cq->device->req_notify_cq(cq, flags);
1da177e4
LT
1879}
1880
1881/**
1882 * ib_req_ncomp_notif - Request completion notification when there are
1883 * at least the specified number of unreaped completions on the CQ.
1884 * @cq: The CQ to generate an event for.
1885 * @wc_cnt: The number of unreaped completions that should be on the
1886 * CQ before an event is generated.
1887 */
1888static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
1889{
1890 return cq->device->req_ncomp_notif ?
1891 cq->device->req_ncomp_notif(cq, wc_cnt) :
1892 -ENOSYS;
1893}
1894
1895/**
1896 * ib_get_dma_mr - Returns a memory region for system memory that is
1897 * usable for DMA.
1898 * @pd: The protection domain associated with the memory region.
1899 * @mr_access_flags: Specifies the memory access rights.
9b513090
RC
1900 *
1901 * Note that the ib_dma_*() functions defined below must be used
1902 * to create/destroy addresses used with the Lkey or Rkey returned
1903 * by ib_get_dma_mr().
1da177e4
LT
1904 */
1905struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
1906
9b513090
RC
1907/**
1908 * ib_dma_mapping_error - check a DMA addr for error
1909 * @dev: The device for which the dma_addr was created
1910 * @dma_addr: The DMA address to check
1911 */
1912static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
1913{
d1998ef3
BC
1914 if (dev->dma_ops)
1915 return dev->dma_ops->mapping_error(dev, dma_addr);
8d8bb39b 1916 return dma_mapping_error(dev->dma_device, dma_addr);
9b513090
RC
1917}
1918
1919/**
1920 * ib_dma_map_single - Map a kernel virtual address to DMA address
1921 * @dev: The device for which the dma_addr is to be created
1922 * @cpu_addr: The kernel virtual address
1923 * @size: The size of the region in bytes
1924 * @direction: The direction of the DMA
1925 */
1926static inline u64 ib_dma_map_single(struct ib_device *dev,
1927 void *cpu_addr, size_t size,
1928 enum dma_data_direction direction)
1929{
d1998ef3
BC
1930 if (dev->dma_ops)
1931 return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
1932 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
9b513090
RC
1933}
1934
1935/**
1936 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
1937 * @dev: The device for which the DMA address was created
1938 * @addr: The DMA address
1939 * @size: The size of the region in bytes
1940 * @direction: The direction of the DMA
1941 */
1942static inline void ib_dma_unmap_single(struct ib_device *dev,
1943 u64 addr, size_t size,
1944 enum dma_data_direction direction)
1945{
d1998ef3
BC
1946 if (dev->dma_ops)
1947 dev->dma_ops->unmap_single(dev, addr, size, direction);
1948 else
9b513090
RC
1949 dma_unmap_single(dev->dma_device, addr, size, direction);
1950}
1951
cb9fbc5c
AK
1952static inline u64 ib_dma_map_single_attrs(struct ib_device *dev,
1953 void *cpu_addr, size_t size,
1954 enum dma_data_direction direction,
1955 struct dma_attrs *attrs)
1956{
1957 return dma_map_single_attrs(dev->dma_device, cpu_addr, size,
1958 direction, attrs);
1959}
1960
1961static inline void ib_dma_unmap_single_attrs(struct ib_device *dev,
1962 u64 addr, size_t size,
1963 enum dma_data_direction direction,
1964 struct dma_attrs *attrs)
1965{
1966 return dma_unmap_single_attrs(dev->dma_device, addr, size,
1967 direction, attrs);
1968}
1969
9b513090
RC
1970/**
1971 * ib_dma_map_page - Map a physical page to DMA address
1972 * @dev: The device for which the dma_addr is to be created
1973 * @page: The page to be mapped
1974 * @offset: The offset within the page
1975 * @size: The size of the region in bytes
1976 * @direction: The direction of the DMA
1977 */
1978static inline u64 ib_dma_map_page(struct ib_device *dev,
1979 struct page *page,
1980 unsigned long offset,
1981 size_t size,
1982 enum dma_data_direction direction)
1983{
d1998ef3
BC
1984 if (dev->dma_ops)
1985 return dev->dma_ops->map_page(dev, page, offset, size, direction);
1986 return dma_map_page(dev->dma_device, page, offset, size, direction);
9b513090
RC
1987}
1988
1989/**
1990 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
1991 * @dev: The device for which the DMA address was created
1992 * @addr: The DMA address
1993 * @size: The size of the region in bytes
1994 * @direction: The direction of the DMA
1995 */
1996static inline void ib_dma_unmap_page(struct ib_device *dev,
1997 u64 addr, size_t size,
1998 enum dma_data_direction direction)
1999{
d1998ef3
BC
2000 if (dev->dma_ops)
2001 dev->dma_ops->unmap_page(dev, addr, size, direction);
2002 else
9b513090
RC
2003 dma_unmap_page(dev->dma_device, addr, size, direction);
2004}
2005
2006/**
2007 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
2008 * @dev: The device for which the DMA addresses are to be created
2009 * @sg: The array of scatter/gather entries
2010 * @nents: The number of scatter/gather entries
2011 * @direction: The direction of the DMA
2012 */
2013static inline int ib_dma_map_sg(struct ib_device *dev,
2014 struct scatterlist *sg, int nents,
2015 enum dma_data_direction direction)
2016{
d1998ef3
BC
2017 if (dev->dma_ops)
2018 return dev->dma_ops->map_sg(dev, sg, nents, direction);
2019 return dma_map_sg(dev->dma_device, sg, nents, direction);
9b513090
RC
2020}
2021
2022/**
2023 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
2024 * @dev: The device for which the DMA addresses were created
2025 * @sg: The array of scatter/gather entries
2026 * @nents: The number of scatter/gather entries
2027 * @direction: The direction of the DMA
2028 */
2029static inline void ib_dma_unmap_sg(struct ib_device *dev,
2030 struct scatterlist *sg, int nents,
2031 enum dma_data_direction direction)
2032{
d1998ef3
BC
2033 if (dev->dma_ops)
2034 dev->dma_ops->unmap_sg(dev, sg, nents, direction);
2035 else
9b513090
RC
2036 dma_unmap_sg(dev->dma_device, sg, nents, direction);
2037}
2038
cb9fbc5c
AK
2039static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
2040 struct scatterlist *sg, int nents,
2041 enum dma_data_direction direction,
2042 struct dma_attrs *attrs)
2043{
2044 return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, attrs);
2045}
2046
2047static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
2048 struct scatterlist *sg, int nents,
2049 enum dma_data_direction direction,
2050 struct dma_attrs *attrs)
2051{
2052 dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, attrs);
2053}
9b513090
RC
2054/**
2055 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
2056 * @dev: The device for which the DMA addresses were created
2057 * @sg: The scatter/gather entry
2058 */
2059static inline u64 ib_sg_dma_address(struct ib_device *dev,
2060 struct scatterlist *sg)
2061{
d1998ef3
BC
2062 if (dev->dma_ops)
2063 return dev->dma_ops->dma_address(dev, sg);
2064 return sg_dma_address(sg);
9b513090
RC
2065}
2066
2067/**
2068 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
2069 * @dev: The device for which the DMA addresses were created
2070 * @sg: The scatter/gather entry
2071 */
2072static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
2073 struct scatterlist *sg)
2074{
d1998ef3
BC
2075 if (dev->dma_ops)
2076 return dev->dma_ops->dma_len(dev, sg);
2077 return sg_dma_len(sg);
9b513090
RC
2078}
2079
2080/**
2081 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
2082 * @dev: The device for which the DMA address was created
2083 * @addr: The DMA address
2084 * @size: The size of the region in bytes
2085 * @dir: The direction of the DMA
2086 */
2087static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
2088 u64 addr,
2089 size_t size,
2090 enum dma_data_direction dir)
2091{
d1998ef3
BC
2092 if (dev->dma_ops)
2093 dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
2094 else
9b513090
RC
2095 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
2096}
2097
2098/**
2099 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
2100 * @dev: The device for which the DMA address was created
2101 * @addr: The DMA address
2102 * @size: The size of the region in bytes
2103 * @dir: The direction of the DMA
2104 */
2105static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
2106 u64 addr,
2107 size_t size,
2108 enum dma_data_direction dir)
2109{
d1998ef3
BC
2110 if (dev->dma_ops)
2111 dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
2112 else
9b513090
RC
2113 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
2114}
2115
2116/**
2117 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
2118 * @dev: The device for which the DMA address is requested
2119 * @size: The size of the region to allocate in bytes
2120 * @dma_handle: A pointer for returning the DMA address of the region
2121 * @flag: memory allocator flags
2122 */
2123static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
2124 size_t size,
2125 u64 *dma_handle,
2126 gfp_t flag)
2127{
d1998ef3
BC
2128 if (dev->dma_ops)
2129 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
c59a3da1
RD
2130 else {
2131 dma_addr_t handle;
2132 void *ret;
2133
2134 ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
2135 *dma_handle = handle;
2136 return ret;
2137 }
9b513090
RC
2138}
2139
2140/**
2141 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
2142 * @dev: The device for which the DMA addresses were allocated
2143 * @size: The size of the region
2144 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
2145 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
2146 */
2147static inline void ib_dma_free_coherent(struct ib_device *dev,
2148 size_t size, void *cpu_addr,
2149 u64 dma_handle)
2150{
d1998ef3
BC
2151 if (dev->dma_ops)
2152 dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
2153 else
9b513090
RC
2154 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
2155}
2156
1da177e4
LT
2157/**
2158 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
2159 * by an HCA.
2160 * @pd: The protection domain associated assigned to the registered region.
2161 * @phys_buf_array: Specifies a list of physical buffers to use in the
2162 * memory region.
2163 * @num_phys_buf: Specifies the size of the phys_buf_array.
2164 * @mr_access_flags: Specifies the memory access rights.
2165 * @iova_start: The offset of the region's starting I/O virtual address.
2166 */
2167struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
2168 struct ib_phys_buf *phys_buf_array,
2169 int num_phys_buf,
2170 int mr_access_flags,
2171 u64 *iova_start);
2172
2173/**
2174 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
2175 * Conceptually, this call performs the functions deregister memory region
2176 * followed by register physical memory region. Where possible,
2177 * resources are reused instead of deallocated and reallocated.
2178 * @mr: The memory region to modify.
2179 * @mr_rereg_mask: A bit-mask used to indicate which of the following
2180 * properties of the memory region are being modified.
2181 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
2182 * the new protection domain to associated with the memory region,
2183 * otherwise, this parameter is ignored.
2184 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
2185 * field specifies a list of physical buffers to use in the new
2186 * translation, otherwise, this parameter is ignored.
2187 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
2188 * field specifies the size of the phys_buf_array, otherwise, this
2189 * parameter is ignored.
2190 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
2191 * field specifies the new memory access rights, otherwise, this
2192 * parameter is ignored.
2193 * @iova_start: The offset of the region's starting I/O virtual address.
2194 */
2195int ib_rereg_phys_mr(struct ib_mr *mr,
2196 int mr_rereg_mask,
2197 struct ib_pd *pd,
2198 struct ib_phys_buf *phys_buf_array,
2199 int num_phys_buf,
2200 int mr_access_flags,
2201 u64 *iova_start);
2202
2203/**
2204 * ib_query_mr - Retrieves information about a specific memory region.
2205 * @mr: The memory region to retrieve information about.
2206 * @mr_attr: The attributes of the specified memory region.
2207 */
2208int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
2209
2210/**
2211 * ib_dereg_mr - Deregisters a memory region and removes it from the
2212 * HCA translation table.
2213 * @mr: The memory region to deregister.
7083e42e
SM
2214 *
2215 * This function can fail, if the memory region has memory windows bound to it.
1da177e4
LT
2216 */
2217int ib_dereg_mr(struct ib_mr *mr);
2218
00f7ec36
SW
2219/**
2220 * ib_alloc_fast_reg_mr - Allocates memory region usable with the
2221 * IB_WR_FAST_REG_MR send work request.
2222 * @pd: The protection domain associated with the region.
2223 * @max_page_list_len: requested max physical buffer list length to be
2224 * used with fast register work requests for this MR.
2225 */
2226struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len);
2227
2228/**
2229 * ib_alloc_fast_reg_page_list - Allocates a page list array
2230 * @device - ib device pointer.
2231 * @page_list_len - size of the page list array to be allocated.
2232 *
2233 * This allocates and returns a struct ib_fast_reg_page_list * and a
2234 * page_list array that is at least page_list_len in size. The actual
2235 * size is returned in max_page_list_len. The caller is responsible
2236 * for initializing the contents of the page_list array before posting
2237 * a send work request with the IB_WC_FAST_REG_MR opcode.
2238 *
2239 * The page_list array entries must be translated using one of the
2240 * ib_dma_*() functions just like the addresses passed to
2241 * ib_map_phys_fmr(). Once the ib_post_send() is issued, the struct
2242 * ib_fast_reg_page_list must not be modified by the caller until the
2243 * IB_WC_FAST_REG_MR work request completes.
2244 */
2245struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(
2246 struct ib_device *device, int page_list_len);
2247
2248/**
2249 * ib_free_fast_reg_page_list - Deallocates a previously allocated
2250 * page list array.
2251 * @page_list - struct ib_fast_reg_page_list pointer to be deallocated.
2252 */
2253void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
2254
2255/**
2256 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
2257 * R_Key and L_Key.
2258 * @mr - struct ib_mr pointer to be updated.
2259 * @newkey - new key to be used.
2260 */
2261static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey)
2262{
2263 mr->lkey = (mr->lkey & 0xffffff00) | newkey;
2264 mr->rkey = (mr->rkey & 0xffffff00) | newkey;
2265}
2266
7083e42e
SM
2267/**
2268 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
2269 * for calculating a new rkey for type 2 memory windows.
2270 * @rkey - the rkey to increment.
2271 */
2272static inline u32 ib_inc_rkey(u32 rkey)
2273{
2274 const u32 mask = 0x000000ff;
2275 return ((rkey + 1) & mask) | (rkey & ~mask);
2276}
2277
1da177e4
LT
2278/**
2279 * ib_alloc_mw - Allocates a memory window.
2280 * @pd: The protection domain associated with the memory window.
7083e42e 2281 * @type: The type of the memory window (1 or 2).
1da177e4 2282 */
7083e42e 2283struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type);
1da177e4
LT
2284
2285/**
2286 * ib_bind_mw - Posts a work request to the send queue of the specified
2287 * QP, which binds the memory window to the given address range and
2288 * remote access attributes.
2289 * @qp: QP to post the bind work request on.
2290 * @mw: The memory window to bind.
2291 * @mw_bind: Specifies information about the memory window, including
2292 * its address range, remote access rights, and associated memory region.
7083e42e
SM
2293 *
2294 * If there is no immediate error, the function will update the rkey member
2295 * of the mw parameter to its new value. The bind operation can still fail
2296 * asynchronously.
1da177e4
LT
2297 */
2298static inline int ib_bind_mw(struct ib_qp *qp,
2299 struct ib_mw *mw,
2300 struct ib_mw_bind *mw_bind)
2301{
2302 /* XXX reference counting in corresponding MR? */
2303 return mw->device->bind_mw ?
2304 mw->device->bind_mw(qp, mw, mw_bind) :
2305 -ENOSYS;
2306}
2307
2308/**
2309 * ib_dealloc_mw - Deallocates a memory window.
2310 * @mw: The memory window to deallocate.
2311 */
2312int ib_dealloc_mw(struct ib_mw *mw);
2313
2314/**
2315 * ib_alloc_fmr - Allocates a unmapped fast memory region.
2316 * @pd: The protection domain associated with the unmapped region.
2317 * @mr_access_flags: Specifies the memory access rights.
2318 * @fmr_attr: Attributes of the unmapped region.
2319 *
2320 * A fast memory region must be mapped before it can be used as part of
2321 * a work request.
2322 */
2323struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
2324 int mr_access_flags,
2325 struct ib_fmr_attr *fmr_attr);
2326
2327/**
2328 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
2329 * @fmr: The fast memory region to associate with the pages.
2330 * @page_list: An array of physical pages to map to the fast memory region.
2331 * @list_len: The number of pages in page_list.
2332 * @iova: The I/O virtual address to use with the mapped region.
2333 */
2334static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
2335 u64 *page_list, int list_len,
2336 u64 iova)
2337{
2338 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
2339}
2340
2341/**
2342 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
2343 * @fmr_list: A linked list of fast memory regions to unmap.
2344 */
2345int ib_unmap_fmr(struct list_head *fmr_list);
2346
2347/**
2348 * ib_dealloc_fmr - Deallocates a fast memory region.
2349 * @fmr: The fast memory region to deallocate.
2350 */
2351int ib_dealloc_fmr(struct ib_fmr *fmr);
2352
2353/**
2354 * ib_attach_mcast - Attaches the specified QP to a multicast group.
2355 * @qp: QP to attach to the multicast group. The QP must be type
2356 * IB_QPT_UD.
2357 * @gid: Multicast group GID.
2358 * @lid: Multicast group LID in host byte order.
2359 *
2360 * In order to send and receive multicast packets, subnet
2361 * administration must have created the multicast group and configured
2362 * the fabric appropriately. The port associated with the specified
2363 * QP must also be a member of the multicast group.
2364 */
2365int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
2366
2367/**
2368 * ib_detach_mcast - Detaches the specified QP from a multicast group.
2369 * @qp: QP to detach from the multicast group.
2370 * @gid: Multicast group GID.
2371 * @lid: Multicast group LID in host byte order.
2372 */
2373int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
2374
59991f94
SH
2375/**
2376 * ib_alloc_xrcd - Allocates an XRC domain.
2377 * @device: The device on which to allocate the XRC domain.
2378 */
2379struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device);
2380
2381/**
2382 * ib_dealloc_xrcd - Deallocates an XRC domain.
2383 * @xrcd: The XRC domain to deallocate.
2384 */
2385int ib_dealloc_xrcd(struct ib_xrcd *xrcd);
2386
319a441d
HHZ
2387struct ib_flow *ib_create_flow(struct ib_qp *qp,
2388 struct ib_flow_attr *flow_attr, int domain);
2389int ib_destroy_flow(struct ib_flow *flow_id);
2390
1c636f80
EC
2391static inline int ib_check_mr_access(int flags)
2392{
2393 /*
2394 * Local write permission is required if remote write or
2395 * remote atomic permission is also requested.
2396 */
2397 if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
2398 !(flags & IB_ACCESS_LOCAL_WRITE))
2399 return -EINVAL;
2400
2401 return 0;
2402}
2403
1da177e4 2404#endif /* IB_VERBS_H */