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Commit | Line | Data |
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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> |
9268f72d | 51 | #include <linux/socket.h> |
14d3a3b2 | 52 | #include <linux/irq_poll.h> |
dd5f03be | 53 | #include <uapi/linux/if_ether.h> |
c865f246 SK |
54 | #include <net/ipv6.h> |
55 | #include <net/ip.h> | |
301a721e MB |
56 | #include <linux/string.h> |
57 | #include <linux/slab.h> | |
2fc77572 | 58 | #include <linux/netdevice.h> |
e2773c06 | 59 | |
50174a7f | 60 | #include <linux/if_link.h> |
60063497 | 61 | #include <linux/atomic.h> |
882214e2 | 62 | #include <linux/mmu_notifier.h> |
7c0f6ba6 | 63 | #include <linux/uaccess.h> |
43579b5f | 64 | #include <linux/cgroup_rdma.h> |
ea6819e1 | 65 | #include <uapi/rdma/ib_user_verbs.h> |
1da177e4 | 66 | |
9abb0d1b LR |
67 | #define IB_FW_VERSION_NAME_MAX ETHTOOL_FWVERS_LEN |
68 | ||
f0626710 | 69 | extern struct workqueue_struct *ib_wq; |
14d3a3b2 | 70 | extern struct workqueue_struct *ib_comp_wq; |
f0626710 | 71 | |
1da177e4 LT |
72 | union ib_gid { |
73 | u8 raw[16]; | |
74 | struct { | |
97f52eb4 SH |
75 | __be64 subnet_prefix; |
76 | __be64 interface_id; | |
1da177e4 LT |
77 | } global; |
78 | }; | |
79 | ||
e26be1bf MS |
80 | extern union ib_gid zgid; |
81 | ||
b39ffa1d MB |
82 | enum ib_gid_type { |
83 | /* If link layer is Ethernet, this is RoCE V1 */ | |
84 | IB_GID_TYPE_IB = 0, | |
85 | IB_GID_TYPE_ROCE = 0, | |
7766a99f | 86 | IB_GID_TYPE_ROCE_UDP_ENCAP = 1, |
b39ffa1d MB |
87 | IB_GID_TYPE_SIZE |
88 | }; | |
89 | ||
7ead4bcb | 90 | #define ROCE_V2_UDP_DPORT 4791 |
03db3a2d | 91 | struct ib_gid_attr { |
b39ffa1d | 92 | enum ib_gid_type gid_type; |
03db3a2d MB |
93 | struct net_device *ndev; |
94 | }; | |
95 | ||
07ebafba TT |
96 | enum rdma_node_type { |
97 | /* IB values map to NodeInfo:NodeType. */ | |
98 | RDMA_NODE_IB_CA = 1, | |
99 | RDMA_NODE_IB_SWITCH, | |
100 | RDMA_NODE_IB_ROUTER, | |
180771a3 UM |
101 | RDMA_NODE_RNIC, |
102 | RDMA_NODE_USNIC, | |
5db5765e | 103 | RDMA_NODE_USNIC_UDP, |
1da177e4 LT |
104 | }; |
105 | ||
a0c1b2a3 EC |
106 | enum { |
107 | /* set the local administered indication */ | |
108 | IB_SA_WELL_KNOWN_GUID = BIT_ULL(57) | 2, | |
109 | }; | |
110 | ||
07ebafba TT |
111 | enum rdma_transport_type { |
112 | RDMA_TRANSPORT_IB, | |
180771a3 | 113 | RDMA_TRANSPORT_IWARP, |
248567f7 UM |
114 | RDMA_TRANSPORT_USNIC, |
115 | RDMA_TRANSPORT_USNIC_UDP | |
07ebafba TT |
116 | }; |
117 | ||
6b90a6d6 MW |
118 | enum rdma_protocol_type { |
119 | RDMA_PROTOCOL_IB, | |
120 | RDMA_PROTOCOL_IBOE, | |
121 | RDMA_PROTOCOL_IWARP, | |
122 | RDMA_PROTOCOL_USNIC_UDP | |
123 | }; | |
124 | ||
8385fd84 RD |
125 | __attribute_const__ enum rdma_transport_type |
126 | rdma_node_get_transport(enum rdma_node_type node_type); | |
07ebafba | 127 | |
c865f246 SK |
128 | enum rdma_network_type { |
129 | RDMA_NETWORK_IB, | |
130 | RDMA_NETWORK_ROCE_V1 = RDMA_NETWORK_IB, | |
131 | RDMA_NETWORK_IPV4, | |
132 | RDMA_NETWORK_IPV6 | |
133 | }; | |
134 | ||
135 | static inline enum ib_gid_type ib_network_to_gid_type(enum rdma_network_type network_type) | |
136 | { | |
137 | if (network_type == RDMA_NETWORK_IPV4 || | |
138 | network_type == RDMA_NETWORK_IPV6) | |
139 | return IB_GID_TYPE_ROCE_UDP_ENCAP; | |
140 | ||
141 | /* IB_GID_TYPE_IB same as RDMA_NETWORK_ROCE_V1 */ | |
142 | return IB_GID_TYPE_IB; | |
143 | } | |
144 | ||
145 | static inline enum rdma_network_type ib_gid_to_network_type(enum ib_gid_type gid_type, | |
146 | union ib_gid *gid) | |
147 | { | |
148 | if (gid_type == IB_GID_TYPE_IB) | |
149 | return RDMA_NETWORK_IB; | |
150 | ||
151 | if (ipv6_addr_v4mapped((struct in6_addr *)gid)) | |
152 | return RDMA_NETWORK_IPV4; | |
153 | else | |
154 | return RDMA_NETWORK_IPV6; | |
155 | } | |
156 | ||
a3f5adaf EC |
157 | enum rdma_link_layer { |
158 | IB_LINK_LAYER_UNSPECIFIED, | |
159 | IB_LINK_LAYER_INFINIBAND, | |
160 | IB_LINK_LAYER_ETHERNET, | |
161 | }; | |
162 | ||
1da177e4 | 163 | enum ib_device_cap_flags { |
7ca0bc53 LR |
164 | IB_DEVICE_RESIZE_MAX_WR = (1 << 0), |
165 | IB_DEVICE_BAD_PKEY_CNTR = (1 << 1), | |
166 | IB_DEVICE_BAD_QKEY_CNTR = (1 << 2), | |
167 | IB_DEVICE_RAW_MULTI = (1 << 3), | |
168 | IB_DEVICE_AUTO_PATH_MIG = (1 << 4), | |
169 | IB_DEVICE_CHANGE_PHY_PORT = (1 << 5), | |
170 | IB_DEVICE_UD_AV_PORT_ENFORCE = (1 << 6), | |
171 | IB_DEVICE_CURR_QP_STATE_MOD = (1 << 7), | |
172 | IB_DEVICE_SHUTDOWN_PORT = (1 << 8), | |
173 | IB_DEVICE_INIT_TYPE = (1 << 9), | |
174 | IB_DEVICE_PORT_ACTIVE_EVENT = (1 << 10), | |
175 | IB_DEVICE_SYS_IMAGE_GUID = (1 << 11), | |
176 | IB_DEVICE_RC_RNR_NAK_GEN = (1 << 12), | |
177 | IB_DEVICE_SRQ_RESIZE = (1 << 13), | |
178 | IB_DEVICE_N_NOTIFY_CQ = (1 << 14), | |
b1adc714 CH |
179 | |
180 | /* | |
181 | * This device supports a per-device lkey or stag that can be | |
182 | * used without performing a memory registration for the local | |
183 | * memory. Note that ULPs should never check this flag, but | |
184 | * instead of use the local_dma_lkey flag in the ib_pd structure, | |
185 | * which will always contain a usable lkey. | |
186 | */ | |
7ca0bc53 LR |
187 | IB_DEVICE_LOCAL_DMA_LKEY = (1 << 15), |
188 | IB_DEVICE_RESERVED /* old SEND_W_INV */ = (1 << 16), | |
189 | IB_DEVICE_MEM_WINDOW = (1 << 17), | |
e0605d91 EC |
190 | /* |
191 | * Devices should set IB_DEVICE_UD_IP_SUM if they support | |
192 | * insertion of UDP and TCP checksum on outgoing UD IPoIB | |
193 | * messages and can verify the validity of checksum for | |
194 | * incoming messages. Setting this flag implies that the | |
195 | * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode. | |
196 | */ | |
7ca0bc53 LR |
197 | IB_DEVICE_UD_IP_CSUM = (1 << 18), |
198 | IB_DEVICE_UD_TSO = (1 << 19), | |
199 | IB_DEVICE_XRC = (1 << 20), | |
b1adc714 CH |
200 | |
201 | /* | |
202 | * This device supports the IB "base memory management extension", | |
203 | * which includes support for fast registrations (IB_WR_REG_MR, | |
204 | * IB_WR_LOCAL_INV and IB_WR_SEND_WITH_INV verbs). This flag should | |
205 | * also be set by any iWarp device which must support FRs to comply | |
206 | * to the iWarp verbs spec. iWarp devices also support the | |
207 | * IB_WR_RDMA_READ_WITH_INV verb for RDMA READs that invalidate the | |
208 | * stag. | |
209 | */ | |
7ca0bc53 LR |
210 | IB_DEVICE_MEM_MGT_EXTENSIONS = (1 << 21), |
211 | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1 << 22), | |
212 | IB_DEVICE_MEM_WINDOW_TYPE_2A = (1 << 23), | |
213 | IB_DEVICE_MEM_WINDOW_TYPE_2B = (1 << 24), | |
214 | IB_DEVICE_RC_IP_CSUM = (1 << 25), | |
ebaaee25 | 215 | /* Deprecated. Please use IB_RAW_PACKET_CAP_IP_CSUM. */ |
7ca0bc53 | 216 | IB_DEVICE_RAW_IP_CSUM = (1 << 26), |
8a06ce59 LR |
217 | /* |
218 | * Devices should set IB_DEVICE_CROSS_CHANNEL if they | |
219 | * support execution of WQEs that involve synchronization | |
220 | * of I/O operations with single completion queue managed | |
221 | * by hardware. | |
222 | */ | |
223 | IB_DEVICE_CROSS_CHANNEL = (1 << 27), | |
7ca0bc53 LR |
224 | IB_DEVICE_MANAGED_FLOW_STEERING = (1 << 29), |
225 | IB_DEVICE_SIGNATURE_HANDOVER = (1 << 30), | |
47355b3c | 226 | IB_DEVICE_ON_DEMAND_PAGING = (1ULL << 31), |
f5aa9159 | 227 | IB_DEVICE_SG_GAPS_REG = (1ULL << 32), |
c7e162a4 | 228 | IB_DEVICE_VIRTUAL_FUNCTION = (1ULL << 33), |
ebaaee25 | 229 | /* Deprecated. Please use IB_RAW_PACKET_CAP_SCATTER_FCS. */ |
c7e162a4 | 230 | IB_DEVICE_RAW_SCATTER_FCS = (1ULL << 34), |
62e45949 | 231 | IB_DEVICE_RDMA_NETDEV_OPA_VNIC = (1ULL << 35), |
1b01d335 SG |
232 | }; |
233 | ||
234 | enum ib_signature_prot_cap { | |
235 | IB_PROT_T10DIF_TYPE_1 = 1, | |
236 | IB_PROT_T10DIF_TYPE_2 = 1 << 1, | |
237 | IB_PROT_T10DIF_TYPE_3 = 1 << 2, | |
238 | }; | |
239 | ||
240 | enum ib_signature_guard_cap { | |
241 | IB_GUARD_T10DIF_CRC = 1, | |
242 | IB_GUARD_T10DIF_CSUM = 1 << 1, | |
1da177e4 LT |
243 | }; |
244 | ||
245 | enum ib_atomic_cap { | |
246 | IB_ATOMIC_NONE, | |
247 | IB_ATOMIC_HCA, | |
248 | IB_ATOMIC_GLOB | |
249 | }; | |
250 | ||
860f10a7 | 251 | enum ib_odp_general_cap_bits { |
25bf14d6 AK |
252 | IB_ODP_SUPPORT = 1 << 0, |
253 | IB_ODP_SUPPORT_IMPLICIT = 1 << 1, | |
860f10a7 SG |
254 | }; |
255 | ||
256 | enum ib_odp_transport_cap_bits { | |
257 | IB_ODP_SUPPORT_SEND = 1 << 0, | |
258 | IB_ODP_SUPPORT_RECV = 1 << 1, | |
259 | IB_ODP_SUPPORT_WRITE = 1 << 2, | |
260 | IB_ODP_SUPPORT_READ = 1 << 3, | |
261 | IB_ODP_SUPPORT_ATOMIC = 1 << 4, | |
262 | }; | |
263 | ||
264 | struct ib_odp_caps { | |
265 | uint64_t general_caps; | |
266 | struct { | |
267 | uint32_t rc_odp_caps; | |
268 | uint32_t uc_odp_caps; | |
269 | uint32_t ud_odp_caps; | |
270 | } per_transport_caps; | |
271 | }; | |
272 | ||
ccf20562 YH |
273 | struct ib_rss_caps { |
274 | /* Corresponding bit will be set if qp type from | |
275 | * 'enum ib_qp_type' is supported, e.g. | |
276 | * supported_qpts |= 1 << IB_QPT_UD | |
277 | */ | |
278 | u32 supported_qpts; | |
279 | u32 max_rwq_indirection_tables; | |
280 | u32 max_rwq_indirection_table_size; | |
281 | }; | |
282 | ||
b9926b92 MB |
283 | enum ib_cq_creation_flags { |
284 | IB_CQ_FLAGS_TIMESTAMP_COMPLETION = 1 << 0, | |
8a06ce59 | 285 | IB_CQ_FLAGS_IGNORE_OVERRUN = 1 << 1, |
b9926b92 MB |
286 | }; |
287 | ||
bcf4c1ea MB |
288 | struct ib_cq_init_attr { |
289 | unsigned int cqe; | |
290 | int comp_vector; | |
291 | u32 flags; | |
292 | }; | |
293 | ||
1da177e4 LT |
294 | struct ib_device_attr { |
295 | u64 fw_ver; | |
97f52eb4 | 296 | __be64 sys_image_guid; |
1da177e4 LT |
297 | u64 max_mr_size; |
298 | u64 page_size_cap; | |
299 | u32 vendor_id; | |
300 | u32 vendor_part_id; | |
301 | u32 hw_ver; | |
302 | int max_qp; | |
303 | int max_qp_wr; | |
fb532d6a | 304 | u64 device_cap_flags; |
1da177e4 LT |
305 | int max_sge; |
306 | int max_sge_rd; | |
307 | int max_cq; | |
308 | int max_cqe; | |
309 | int max_mr; | |
310 | int max_pd; | |
311 | int max_qp_rd_atom; | |
312 | int max_ee_rd_atom; | |
313 | int max_res_rd_atom; | |
314 | int max_qp_init_rd_atom; | |
315 | int max_ee_init_rd_atom; | |
316 | enum ib_atomic_cap atomic_cap; | |
5e80ba8f | 317 | enum ib_atomic_cap masked_atomic_cap; |
1da177e4 LT |
318 | int max_ee; |
319 | int max_rdd; | |
320 | int max_mw; | |
321 | int max_raw_ipv6_qp; | |
322 | int max_raw_ethy_qp; | |
323 | int max_mcast_grp; | |
324 | int max_mcast_qp_attach; | |
325 | int max_total_mcast_qp_attach; | |
326 | int max_ah; | |
327 | int max_fmr; | |
328 | int max_map_per_fmr; | |
329 | int max_srq; | |
330 | int max_srq_wr; | |
331 | int max_srq_sge; | |
00f7ec36 | 332 | unsigned int max_fast_reg_page_list_len; |
1da177e4 LT |
333 | u16 max_pkeys; |
334 | u8 local_ca_ack_delay; | |
1b01d335 SG |
335 | int sig_prot_cap; |
336 | int sig_guard_cap; | |
860f10a7 | 337 | struct ib_odp_caps odp_caps; |
24306dc6 MB |
338 | uint64_t timestamp_mask; |
339 | uint64_t hca_core_clock; /* in KHZ */ | |
ccf20562 YH |
340 | struct ib_rss_caps rss_caps; |
341 | u32 max_wq_type_rq; | |
ebaaee25 | 342 | u32 raw_packet_caps; /* Use ib_raw_packet_caps enum */ |
1da177e4 LT |
343 | }; |
344 | ||
345 | enum ib_mtu { | |
346 | IB_MTU_256 = 1, | |
347 | IB_MTU_512 = 2, | |
348 | IB_MTU_1024 = 3, | |
349 | IB_MTU_2048 = 4, | |
350 | IB_MTU_4096 = 5 | |
351 | }; | |
352 | ||
353 | static inline int ib_mtu_enum_to_int(enum ib_mtu mtu) | |
354 | { | |
355 | switch (mtu) { | |
356 | case IB_MTU_256: return 256; | |
357 | case IB_MTU_512: return 512; | |
358 | case IB_MTU_1024: return 1024; | |
359 | case IB_MTU_2048: return 2048; | |
360 | case IB_MTU_4096: return 4096; | |
361 | default: return -1; | |
362 | } | |
363 | } | |
364 | ||
d3f4aadd AR |
365 | static inline enum ib_mtu ib_mtu_int_to_enum(int mtu) |
366 | { | |
367 | if (mtu >= 4096) | |
368 | return IB_MTU_4096; | |
369 | else if (mtu >= 2048) | |
370 | return IB_MTU_2048; | |
371 | else if (mtu >= 1024) | |
372 | return IB_MTU_1024; | |
373 | else if (mtu >= 512) | |
374 | return IB_MTU_512; | |
375 | else | |
376 | return IB_MTU_256; | |
377 | } | |
378 | ||
1da177e4 LT |
379 | enum ib_port_state { |
380 | IB_PORT_NOP = 0, | |
381 | IB_PORT_DOWN = 1, | |
382 | IB_PORT_INIT = 2, | |
383 | IB_PORT_ARMED = 3, | |
384 | IB_PORT_ACTIVE = 4, | |
385 | IB_PORT_ACTIVE_DEFER = 5 | |
386 | }; | |
387 | ||
388 | enum ib_port_cap_flags { | |
389 | IB_PORT_SM = 1 << 1, | |
390 | IB_PORT_NOTICE_SUP = 1 << 2, | |
391 | IB_PORT_TRAP_SUP = 1 << 3, | |
392 | IB_PORT_OPT_IPD_SUP = 1 << 4, | |
393 | IB_PORT_AUTO_MIGR_SUP = 1 << 5, | |
394 | IB_PORT_SL_MAP_SUP = 1 << 6, | |
395 | IB_PORT_MKEY_NVRAM = 1 << 7, | |
396 | IB_PORT_PKEY_NVRAM = 1 << 8, | |
397 | IB_PORT_LED_INFO_SUP = 1 << 9, | |
398 | IB_PORT_SM_DISABLED = 1 << 10, | |
399 | IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11, | |
400 | IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12, | |
71eeba16 | 401 | IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14, |
1da177e4 LT |
402 | IB_PORT_CM_SUP = 1 << 16, |
403 | IB_PORT_SNMP_TUNNEL_SUP = 1 << 17, | |
404 | IB_PORT_REINIT_SUP = 1 << 18, | |
405 | IB_PORT_DEVICE_MGMT_SUP = 1 << 19, | |
406 | IB_PORT_VENDOR_CLASS_SUP = 1 << 20, | |
407 | IB_PORT_DR_NOTICE_SUP = 1 << 21, | |
408 | IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22, | |
409 | IB_PORT_BOOT_MGMT_SUP = 1 << 23, | |
410 | IB_PORT_LINK_LATENCY_SUP = 1 << 24, | |
b4a26a27 | 411 | IB_PORT_CLIENT_REG_SUP = 1 << 25, |
03db3a2d | 412 | IB_PORT_IP_BASED_GIDS = 1 << 26, |
1da177e4 LT |
413 | }; |
414 | ||
415 | enum ib_port_width { | |
416 | IB_WIDTH_1X = 1, | |
417 | IB_WIDTH_4X = 2, | |
418 | IB_WIDTH_8X = 4, | |
419 | IB_WIDTH_12X = 8 | |
420 | }; | |
421 | ||
422 | static inline int ib_width_enum_to_int(enum ib_port_width width) | |
423 | { | |
424 | switch (width) { | |
425 | case IB_WIDTH_1X: return 1; | |
426 | case IB_WIDTH_4X: return 4; | |
427 | case IB_WIDTH_8X: return 8; | |
428 | case IB_WIDTH_12X: return 12; | |
429 | default: return -1; | |
430 | } | |
431 | } | |
432 | ||
2e96691c OG |
433 | enum ib_port_speed { |
434 | IB_SPEED_SDR = 1, | |
435 | IB_SPEED_DDR = 2, | |
436 | IB_SPEED_QDR = 4, | |
437 | IB_SPEED_FDR10 = 8, | |
438 | IB_SPEED_FDR = 16, | |
12113a35 NO |
439 | IB_SPEED_EDR = 32, |
440 | IB_SPEED_HDR = 64 | |
2e96691c OG |
441 | }; |
442 | ||
b40f4757 CL |
443 | /** |
444 | * struct rdma_hw_stats | |
445 | * @timestamp - Used by the core code to track when the last update was | |
446 | * @lifespan - Used by the core code to determine how old the counters | |
447 | * should be before being updated again. Stored in jiffies, defaults | |
448 | * to 10 milliseconds, drivers can override the default be specifying | |
449 | * their own value during their allocation routine. | |
450 | * @name - Array of pointers to static names used for the counters in | |
451 | * directory. | |
452 | * @num_counters - How many hardware counters there are. If name is | |
453 | * shorter than this number, a kernel oops will result. Driver authors | |
454 | * are encouraged to leave BUILD_BUG_ON(ARRAY_SIZE(@name) < num_counters) | |
455 | * in their code to prevent this. | |
456 | * @value - Array of u64 counters that are accessed by the sysfs code and | |
457 | * filled in by the drivers get_stats routine | |
458 | */ | |
459 | struct rdma_hw_stats { | |
460 | unsigned long timestamp; | |
461 | unsigned long lifespan; | |
462 | const char * const *names; | |
463 | int num_counters; | |
464 | u64 value[]; | |
7f624d02 SW |
465 | }; |
466 | ||
b40f4757 CL |
467 | #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10 |
468 | /** | |
469 | * rdma_alloc_hw_stats_struct - Helper function to allocate dynamic struct | |
470 | * for drivers. | |
471 | * @names - Array of static const char * | |
472 | * @num_counters - How many elements in array | |
473 | * @lifespan - How many milliseconds between updates | |
474 | */ | |
475 | static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct( | |
476 | const char * const *names, int num_counters, | |
477 | unsigned long lifespan) | |
478 | { | |
479 | struct rdma_hw_stats *stats; | |
480 | ||
481 | stats = kzalloc(sizeof(*stats) + num_counters * sizeof(u64), | |
482 | GFP_KERNEL); | |
483 | if (!stats) | |
484 | return NULL; | |
485 | stats->names = names; | |
486 | stats->num_counters = num_counters; | |
487 | stats->lifespan = msecs_to_jiffies(lifespan); | |
488 | ||
489 | return stats; | |
490 | } | |
491 | ||
492 | ||
f9b22e35 IW |
493 | /* Define bits for the various functionality this port needs to be supported by |
494 | * the core. | |
495 | */ | |
496 | /* Management 0x00000FFF */ | |
497 | #define RDMA_CORE_CAP_IB_MAD 0x00000001 | |
498 | #define RDMA_CORE_CAP_IB_SMI 0x00000002 | |
499 | #define RDMA_CORE_CAP_IB_CM 0x00000004 | |
500 | #define RDMA_CORE_CAP_IW_CM 0x00000008 | |
501 | #define RDMA_CORE_CAP_IB_SA 0x00000010 | |
65995fee | 502 | #define RDMA_CORE_CAP_OPA_MAD 0x00000020 |
f9b22e35 IW |
503 | |
504 | /* Address format 0x000FF000 */ | |
505 | #define RDMA_CORE_CAP_AF_IB 0x00001000 | |
506 | #define RDMA_CORE_CAP_ETH_AH 0x00002000 | |
94d595c5 | 507 | #define RDMA_CORE_CAP_OPA_AH 0x00004000 |
f9b22e35 IW |
508 | |
509 | /* Protocol 0xFFF00000 */ | |
510 | #define RDMA_CORE_CAP_PROT_IB 0x00100000 | |
511 | #define RDMA_CORE_CAP_PROT_ROCE 0x00200000 | |
512 | #define RDMA_CORE_CAP_PROT_IWARP 0x00400000 | |
7766a99f | 513 | #define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000 |
aa773bd4 | 514 | #define RDMA_CORE_CAP_PROT_RAW_PACKET 0x01000000 |
ce1e055f | 515 | #define RDMA_CORE_CAP_PROT_USNIC 0x02000000 |
f9b22e35 IW |
516 | |
517 | #define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \ | |
518 | | RDMA_CORE_CAP_IB_MAD \ | |
519 | | RDMA_CORE_CAP_IB_SMI \ | |
520 | | RDMA_CORE_CAP_IB_CM \ | |
521 | | RDMA_CORE_CAP_IB_SA \ | |
522 | | RDMA_CORE_CAP_AF_IB) | |
523 | #define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \ | |
524 | | RDMA_CORE_CAP_IB_MAD \ | |
525 | | RDMA_CORE_CAP_IB_CM \ | |
f9b22e35 IW |
526 | | RDMA_CORE_CAP_AF_IB \ |
527 | | RDMA_CORE_CAP_ETH_AH) | |
7766a99f MB |
528 | #define RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP \ |
529 | (RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP \ | |
530 | | RDMA_CORE_CAP_IB_MAD \ | |
531 | | RDMA_CORE_CAP_IB_CM \ | |
532 | | RDMA_CORE_CAP_AF_IB \ | |
533 | | RDMA_CORE_CAP_ETH_AH) | |
f9b22e35 IW |
534 | #define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \ |
535 | | RDMA_CORE_CAP_IW_CM) | |
65995fee IW |
536 | #define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \ |
537 | | RDMA_CORE_CAP_OPA_MAD) | |
f9b22e35 | 538 | |
aa773bd4 OG |
539 | #define RDMA_CORE_PORT_RAW_PACKET (RDMA_CORE_CAP_PROT_RAW_PACKET) |
540 | ||
ce1e055f OG |
541 | #define RDMA_CORE_PORT_USNIC (RDMA_CORE_CAP_PROT_USNIC) |
542 | ||
1da177e4 | 543 | struct ib_port_attr { |
fad61ad4 | 544 | u64 subnet_prefix; |
1da177e4 LT |
545 | enum ib_port_state state; |
546 | enum ib_mtu max_mtu; | |
547 | enum ib_mtu active_mtu; | |
548 | int gid_tbl_len; | |
549 | u32 port_cap_flags; | |
550 | u32 max_msg_sz; | |
551 | u32 bad_pkey_cntr; | |
552 | u32 qkey_viol_cntr; | |
553 | u16 pkey_tbl_len; | |
db58540b | 554 | u32 sm_lid; |
582faf31 | 555 | u32 lid; |
1da177e4 LT |
556 | u8 lmc; |
557 | u8 max_vl_num; | |
558 | u8 sm_sl; | |
559 | u8 subnet_timeout; | |
560 | u8 init_type_reply; | |
561 | u8 active_width; | |
562 | u8 active_speed; | |
563 | u8 phys_state; | |
a0c1b2a3 | 564 | bool grh_required; |
1da177e4 LT |
565 | }; |
566 | ||
567 | enum ib_device_modify_flags { | |
c5bcbbb9 RD |
568 | IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0, |
569 | IB_DEVICE_MODIFY_NODE_DESC = 1 << 1 | |
1da177e4 LT |
570 | }; |
571 | ||
bd99fdea YS |
572 | #define IB_DEVICE_NODE_DESC_MAX 64 |
573 | ||
1da177e4 LT |
574 | struct ib_device_modify { |
575 | u64 sys_image_guid; | |
bd99fdea | 576 | char node_desc[IB_DEVICE_NODE_DESC_MAX]; |
1da177e4 LT |
577 | }; |
578 | ||
579 | enum ib_port_modify_flags { | |
580 | IB_PORT_SHUTDOWN = 1, | |
581 | IB_PORT_INIT_TYPE = (1<<2), | |
cb49366f VN |
582 | IB_PORT_RESET_QKEY_CNTR = (1<<3), |
583 | IB_PORT_OPA_MASK_CHG = (1<<4) | |
1da177e4 LT |
584 | }; |
585 | ||
586 | struct ib_port_modify { | |
587 | u32 set_port_cap_mask; | |
588 | u32 clr_port_cap_mask; | |
589 | u8 init_type; | |
590 | }; | |
591 | ||
592 | enum ib_event_type { | |
593 | IB_EVENT_CQ_ERR, | |
594 | IB_EVENT_QP_FATAL, | |
595 | IB_EVENT_QP_REQ_ERR, | |
596 | IB_EVENT_QP_ACCESS_ERR, | |
597 | IB_EVENT_COMM_EST, | |
598 | IB_EVENT_SQ_DRAINED, | |
599 | IB_EVENT_PATH_MIG, | |
600 | IB_EVENT_PATH_MIG_ERR, | |
601 | IB_EVENT_DEVICE_FATAL, | |
602 | IB_EVENT_PORT_ACTIVE, | |
603 | IB_EVENT_PORT_ERR, | |
604 | IB_EVENT_LID_CHANGE, | |
605 | IB_EVENT_PKEY_CHANGE, | |
d41fcc67 RD |
606 | IB_EVENT_SM_CHANGE, |
607 | IB_EVENT_SRQ_ERR, | |
608 | IB_EVENT_SRQ_LIMIT_REACHED, | |
63942c9a | 609 | IB_EVENT_QP_LAST_WQE_REACHED, |
761d90ed OG |
610 | IB_EVENT_CLIENT_REREGISTER, |
611 | IB_EVENT_GID_CHANGE, | |
f213c052 | 612 | IB_EVENT_WQ_FATAL, |
1da177e4 LT |
613 | }; |
614 | ||
db7489e0 | 615 | const char *__attribute_const__ ib_event_msg(enum ib_event_type event); |
2b1b5b60 | 616 | |
1da177e4 LT |
617 | struct ib_event { |
618 | struct ib_device *device; | |
619 | union { | |
620 | struct ib_cq *cq; | |
621 | struct ib_qp *qp; | |
d41fcc67 | 622 | struct ib_srq *srq; |
f213c052 | 623 | struct ib_wq *wq; |
1da177e4 LT |
624 | u8 port_num; |
625 | } element; | |
626 | enum ib_event_type event; | |
627 | }; | |
628 | ||
629 | struct ib_event_handler { | |
630 | struct ib_device *device; | |
631 | void (*handler)(struct ib_event_handler *, struct ib_event *); | |
632 | struct list_head list; | |
633 | }; | |
634 | ||
635 | #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \ | |
636 | do { \ | |
637 | (_ptr)->device = _device; \ | |
638 | (_ptr)->handler = _handler; \ | |
639 | INIT_LIST_HEAD(&(_ptr)->list); \ | |
640 | } while (0) | |
641 | ||
642 | struct ib_global_route { | |
643 | union ib_gid dgid; | |
644 | u32 flow_label; | |
645 | u8 sgid_index; | |
646 | u8 hop_limit; | |
647 | u8 traffic_class; | |
648 | }; | |
649 | ||
513789ed | 650 | struct ib_grh { |
97f52eb4 SH |
651 | __be32 version_tclass_flow; |
652 | __be16 paylen; | |
513789ed HR |
653 | u8 next_hdr; |
654 | u8 hop_limit; | |
655 | union ib_gid sgid; | |
656 | union ib_gid dgid; | |
657 | }; | |
658 | ||
c865f246 SK |
659 | union rdma_network_hdr { |
660 | struct ib_grh ibgrh; | |
661 | struct { | |
662 | /* The IB spec states that if it's IPv4, the header | |
663 | * is located in the last 20 bytes of the header. | |
664 | */ | |
665 | u8 reserved[20]; | |
666 | struct iphdr roce4grh; | |
667 | }; | |
668 | }; | |
669 | ||
7dafbab3 DH |
670 | #define IB_QPN_MASK 0xFFFFFF |
671 | ||
1da177e4 LT |
672 | enum { |
673 | IB_MULTICAST_QPN = 0xffffff | |
674 | }; | |
675 | ||
f3a7c66b | 676 | #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF) |
b4e64397 | 677 | #define IB_MULTICAST_LID_BASE cpu_to_be16(0xC000) |
97f52eb4 | 678 | |
1da177e4 LT |
679 | enum ib_ah_flags { |
680 | IB_AH_GRH = 1 | |
681 | }; | |
682 | ||
bf6a9e31 JM |
683 | enum ib_rate { |
684 | IB_RATE_PORT_CURRENT = 0, | |
685 | IB_RATE_2_5_GBPS = 2, | |
686 | IB_RATE_5_GBPS = 5, | |
687 | IB_RATE_10_GBPS = 3, | |
688 | IB_RATE_20_GBPS = 6, | |
689 | IB_RATE_30_GBPS = 4, | |
690 | IB_RATE_40_GBPS = 7, | |
691 | IB_RATE_60_GBPS = 8, | |
692 | IB_RATE_80_GBPS = 9, | |
71eeba16 MA |
693 | IB_RATE_120_GBPS = 10, |
694 | IB_RATE_14_GBPS = 11, | |
695 | IB_RATE_56_GBPS = 12, | |
696 | IB_RATE_112_GBPS = 13, | |
697 | IB_RATE_168_GBPS = 14, | |
698 | IB_RATE_25_GBPS = 15, | |
699 | IB_RATE_100_GBPS = 16, | |
700 | IB_RATE_200_GBPS = 17, | |
701 | IB_RATE_300_GBPS = 18 | |
bf6a9e31 JM |
702 | }; |
703 | ||
704 | /** | |
705 | * ib_rate_to_mult - Convert the IB rate enum to a multiple of the | |
706 | * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be | |
707 | * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec. | |
708 | * @rate: rate to convert. | |
709 | */ | |
8385fd84 | 710 | __attribute_const__ int ib_rate_to_mult(enum ib_rate rate); |
bf6a9e31 | 711 | |
71eeba16 MA |
712 | /** |
713 | * ib_rate_to_mbps - Convert the IB rate enum to Mbps. | |
714 | * For example, IB_RATE_2_5_GBPS will be converted to 2500. | |
715 | * @rate: rate to convert. | |
716 | */ | |
8385fd84 | 717 | __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate); |
71eeba16 | 718 | |
17cd3a2d SG |
719 | |
720 | /** | |
9bee178b SG |
721 | * enum ib_mr_type - memory region type |
722 | * @IB_MR_TYPE_MEM_REG: memory region that is used for | |
723 | * normal registration | |
724 | * @IB_MR_TYPE_SIGNATURE: memory region that is used for | |
725 | * signature operations (data-integrity | |
726 | * capable regions) | |
f5aa9159 SG |
727 | * @IB_MR_TYPE_SG_GAPS: memory region that is capable to |
728 | * register any arbitrary sg lists (without | |
729 | * the normal mr constraints - see | |
730 | * ib_map_mr_sg) | |
17cd3a2d | 731 | */ |
9bee178b SG |
732 | enum ib_mr_type { |
733 | IB_MR_TYPE_MEM_REG, | |
734 | IB_MR_TYPE_SIGNATURE, | |
f5aa9159 | 735 | IB_MR_TYPE_SG_GAPS, |
17cd3a2d SG |
736 | }; |
737 | ||
1b01d335 | 738 | /** |
78eda2bb SG |
739 | * Signature types |
740 | * IB_SIG_TYPE_NONE: Unprotected. | |
741 | * IB_SIG_TYPE_T10_DIF: Type T10-DIF | |
1b01d335 | 742 | */ |
78eda2bb SG |
743 | enum ib_signature_type { |
744 | IB_SIG_TYPE_NONE, | |
745 | IB_SIG_TYPE_T10_DIF, | |
1b01d335 SG |
746 | }; |
747 | ||
748 | /** | |
749 | * Signature T10-DIF block-guard types | |
750 | * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules. | |
751 | * IB_T10DIF_CSUM: Corresponds to IP checksum rules. | |
752 | */ | |
753 | enum ib_t10_dif_bg_type { | |
754 | IB_T10DIF_CRC, | |
755 | IB_T10DIF_CSUM | |
756 | }; | |
757 | ||
758 | /** | |
759 | * struct ib_t10_dif_domain - Parameters specific for T10-DIF | |
760 | * domain. | |
1b01d335 SG |
761 | * @bg_type: T10-DIF block guard type (CRC|CSUM) |
762 | * @pi_interval: protection information interval. | |
763 | * @bg: seed of guard computation. | |
764 | * @app_tag: application tag of guard block | |
765 | * @ref_tag: initial guard block reference tag. | |
78eda2bb SG |
766 | * @ref_remap: Indicate wethear the reftag increments each block |
767 | * @app_escape: Indicate to skip block check if apptag=0xffff | |
768 | * @ref_escape: Indicate to skip block check if reftag=0xffffffff | |
769 | * @apptag_check_mask: check bitmask of application tag. | |
1b01d335 SG |
770 | */ |
771 | struct ib_t10_dif_domain { | |
1b01d335 SG |
772 | enum ib_t10_dif_bg_type bg_type; |
773 | u16 pi_interval; | |
774 | u16 bg; | |
775 | u16 app_tag; | |
776 | u32 ref_tag; | |
78eda2bb SG |
777 | bool ref_remap; |
778 | bool app_escape; | |
779 | bool ref_escape; | |
780 | u16 apptag_check_mask; | |
1b01d335 SG |
781 | }; |
782 | ||
783 | /** | |
784 | * struct ib_sig_domain - Parameters for signature domain | |
785 | * @sig_type: specific signauture type | |
786 | * @sig: union of all signature domain attributes that may | |
787 | * be used to set domain layout. | |
788 | */ | |
789 | struct ib_sig_domain { | |
790 | enum ib_signature_type sig_type; | |
791 | union { | |
792 | struct ib_t10_dif_domain dif; | |
793 | } sig; | |
794 | }; | |
795 | ||
796 | /** | |
797 | * struct ib_sig_attrs - Parameters for signature handover operation | |
798 | * @check_mask: bitmask for signature byte check (8 bytes) | |
799 | * @mem: memory domain layout desciptor. | |
800 | * @wire: wire domain layout desciptor. | |
801 | */ | |
802 | struct ib_sig_attrs { | |
803 | u8 check_mask; | |
804 | struct ib_sig_domain mem; | |
805 | struct ib_sig_domain wire; | |
806 | }; | |
807 | ||
808 | enum ib_sig_err_type { | |
809 | IB_SIG_BAD_GUARD, | |
810 | IB_SIG_BAD_REFTAG, | |
811 | IB_SIG_BAD_APPTAG, | |
812 | }; | |
813 | ||
814 | /** | |
815 | * struct ib_sig_err - signature error descriptor | |
816 | */ | |
817 | struct ib_sig_err { | |
818 | enum ib_sig_err_type err_type; | |
819 | u32 expected; | |
820 | u32 actual; | |
821 | u64 sig_err_offset; | |
822 | u32 key; | |
823 | }; | |
824 | ||
825 | enum ib_mr_status_check { | |
826 | IB_MR_CHECK_SIG_STATUS = 1, | |
827 | }; | |
828 | ||
829 | /** | |
830 | * struct ib_mr_status - Memory region status container | |
831 | * | |
832 | * @fail_status: Bitmask of MR checks status. For each | |
833 | * failed check a corresponding status bit is set. | |
834 | * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS | |
835 | * failure. | |
836 | */ | |
837 | struct ib_mr_status { | |
838 | u32 fail_status; | |
839 | struct ib_sig_err sig_err; | |
840 | }; | |
841 | ||
bf6a9e31 JM |
842 | /** |
843 | * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate | |
844 | * enum. | |
845 | * @mult: multiple to convert. | |
846 | */ | |
8385fd84 | 847 | __attribute_const__ enum ib_rate mult_to_ib_rate(int mult); |
bf6a9e31 | 848 | |
44c58487 DC |
849 | enum rdma_ah_attr_type { |
850 | RDMA_AH_ATTR_TYPE_IB, | |
851 | RDMA_AH_ATTR_TYPE_ROCE, | |
64b4646e | 852 | RDMA_AH_ATTR_TYPE_OPA, |
44c58487 DC |
853 | }; |
854 | ||
855 | struct ib_ah_attr { | |
856 | u16 dlid; | |
857 | u8 src_path_bits; | |
858 | }; | |
859 | ||
860 | struct roce_ah_attr { | |
861 | u8 dmac[ETH_ALEN]; | |
862 | }; | |
863 | ||
64b4646e DC |
864 | struct opa_ah_attr { |
865 | u32 dlid; | |
866 | u8 src_path_bits; | |
d98bb7f7 | 867 | bool make_grd; |
64b4646e DC |
868 | }; |
869 | ||
90898850 | 870 | struct rdma_ah_attr { |
1da177e4 | 871 | struct ib_global_route grh; |
1da177e4 | 872 | u8 sl; |
1da177e4 | 873 | u8 static_rate; |
1da177e4 | 874 | u8 port_num; |
44c58487 DC |
875 | u8 ah_flags; |
876 | enum rdma_ah_attr_type type; | |
877 | union { | |
878 | struct ib_ah_attr ib; | |
879 | struct roce_ah_attr roce; | |
64b4646e | 880 | struct opa_ah_attr opa; |
44c58487 | 881 | }; |
1da177e4 LT |
882 | }; |
883 | ||
884 | enum ib_wc_status { | |
885 | IB_WC_SUCCESS, | |
886 | IB_WC_LOC_LEN_ERR, | |
887 | IB_WC_LOC_QP_OP_ERR, | |
888 | IB_WC_LOC_EEC_OP_ERR, | |
889 | IB_WC_LOC_PROT_ERR, | |
890 | IB_WC_WR_FLUSH_ERR, | |
891 | IB_WC_MW_BIND_ERR, | |
892 | IB_WC_BAD_RESP_ERR, | |
893 | IB_WC_LOC_ACCESS_ERR, | |
894 | IB_WC_REM_INV_REQ_ERR, | |
895 | IB_WC_REM_ACCESS_ERR, | |
896 | IB_WC_REM_OP_ERR, | |
897 | IB_WC_RETRY_EXC_ERR, | |
898 | IB_WC_RNR_RETRY_EXC_ERR, | |
899 | IB_WC_LOC_RDD_VIOL_ERR, | |
900 | IB_WC_REM_INV_RD_REQ_ERR, | |
901 | IB_WC_REM_ABORT_ERR, | |
902 | IB_WC_INV_EECN_ERR, | |
903 | IB_WC_INV_EEC_STATE_ERR, | |
904 | IB_WC_FATAL_ERR, | |
905 | IB_WC_RESP_TIMEOUT_ERR, | |
906 | IB_WC_GENERAL_ERR | |
907 | }; | |
908 | ||
db7489e0 | 909 | const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status); |
2b1b5b60 | 910 | |
1da177e4 LT |
911 | enum ib_wc_opcode { |
912 | IB_WC_SEND, | |
913 | IB_WC_RDMA_WRITE, | |
914 | IB_WC_RDMA_READ, | |
915 | IB_WC_COMP_SWAP, | |
916 | IB_WC_FETCH_ADD, | |
c93570f2 | 917 | IB_WC_LSO, |
00f7ec36 | 918 | IB_WC_LOCAL_INV, |
4c67e2bf | 919 | IB_WC_REG_MR, |
5e80ba8f VS |
920 | IB_WC_MASKED_COMP_SWAP, |
921 | IB_WC_MASKED_FETCH_ADD, | |
1da177e4 LT |
922 | /* |
923 | * Set value of IB_WC_RECV so consumers can test if a completion is a | |
924 | * receive by testing (opcode & IB_WC_RECV). | |
925 | */ | |
926 | IB_WC_RECV = 1 << 7, | |
927 | IB_WC_RECV_RDMA_WITH_IMM | |
928 | }; | |
929 | ||
930 | enum ib_wc_flags { | |
931 | IB_WC_GRH = 1, | |
00f7ec36 SW |
932 | IB_WC_WITH_IMM = (1<<1), |
933 | IB_WC_WITH_INVALIDATE = (1<<2), | |
d927d505 | 934 | IB_WC_IP_CSUM_OK = (1<<3), |
dd5f03be MB |
935 | IB_WC_WITH_SMAC = (1<<4), |
936 | IB_WC_WITH_VLAN = (1<<5), | |
c865f246 | 937 | IB_WC_WITH_NETWORK_HDR_TYPE = (1<<6), |
1da177e4 LT |
938 | }; |
939 | ||
940 | struct ib_wc { | |
14d3a3b2 CH |
941 | union { |
942 | u64 wr_id; | |
943 | struct ib_cqe *wr_cqe; | |
944 | }; | |
1da177e4 LT |
945 | enum ib_wc_status status; |
946 | enum ib_wc_opcode opcode; | |
947 | u32 vendor_err; | |
948 | u32 byte_len; | |
062dbb69 | 949 | struct ib_qp *qp; |
00f7ec36 SW |
950 | union { |
951 | __be32 imm_data; | |
952 | u32 invalidate_rkey; | |
953 | } ex; | |
1da177e4 LT |
954 | u32 src_qp; |
955 | int wc_flags; | |
956 | u16 pkey_index; | |
7db20ecd | 957 | u32 slid; |
1da177e4 LT |
958 | u8 sl; |
959 | u8 dlid_path_bits; | |
960 | u8 port_num; /* valid only for DR SMPs on switches */ | |
dd5f03be MB |
961 | u8 smac[ETH_ALEN]; |
962 | u16 vlan_id; | |
c865f246 | 963 | u8 network_hdr_type; |
1da177e4 LT |
964 | }; |
965 | ||
ed23a727 RD |
966 | enum ib_cq_notify_flags { |
967 | IB_CQ_SOLICITED = 1 << 0, | |
968 | IB_CQ_NEXT_COMP = 1 << 1, | |
969 | IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP, | |
970 | IB_CQ_REPORT_MISSED_EVENTS = 1 << 2, | |
1da177e4 LT |
971 | }; |
972 | ||
96104eda | 973 | enum ib_srq_type { |
418d5130 SH |
974 | IB_SRQT_BASIC, |
975 | IB_SRQT_XRC | |
96104eda SH |
976 | }; |
977 | ||
d41fcc67 RD |
978 | enum ib_srq_attr_mask { |
979 | IB_SRQ_MAX_WR = 1 << 0, | |
980 | IB_SRQ_LIMIT = 1 << 1, | |
981 | }; | |
982 | ||
983 | struct ib_srq_attr { | |
984 | u32 max_wr; | |
985 | u32 max_sge; | |
986 | u32 srq_limit; | |
987 | }; | |
988 | ||
989 | struct ib_srq_init_attr { | |
990 | void (*event_handler)(struct ib_event *, void *); | |
991 | void *srq_context; | |
992 | struct ib_srq_attr attr; | |
96104eda | 993 | enum ib_srq_type srq_type; |
418d5130 SH |
994 | |
995 | union { | |
996 | struct { | |
997 | struct ib_xrcd *xrcd; | |
998 | struct ib_cq *cq; | |
999 | } xrc; | |
1000 | } ext; | |
d41fcc67 RD |
1001 | }; |
1002 | ||
1da177e4 LT |
1003 | struct ib_qp_cap { |
1004 | u32 max_send_wr; | |
1005 | u32 max_recv_wr; | |
1006 | u32 max_send_sge; | |
1007 | u32 max_recv_sge; | |
1008 | u32 max_inline_data; | |
a060b562 CH |
1009 | |
1010 | /* | |
1011 | * Maximum number of rdma_rw_ctx structures in flight at a time. | |
1012 | * ib_create_qp() will calculate the right amount of neededed WRs | |
1013 | * and MRs based on this. | |
1014 | */ | |
1015 | u32 max_rdma_ctxs; | |
1da177e4 LT |
1016 | }; |
1017 | ||
1018 | enum ib_sig_type { | |
1019 | IB_SIGNAL_ALL_WR, | |
1020 | IB_SIGNAL_REQ_WR | |
1021 | }; | |
1022 | ||
1023 | enum ib_qp_type { | |
1024 | /* | |
1025 | * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries | |
1026 | * here (and in that order) since the MAD layer uses them as | |
1027 | * indices into a 2-entry table. | |
1028 | */ | |
1029 | IB_QPT_SMI, | |
1030 | IB_QPT_GSI, | |
1031 | ||
1032 | IB_QPT_RC, | |
1033 | IB_QPT_UC, | |
1034 | IB_QPT_UD, | |
1035 | IB_QPT_RAW_IPV6, | |
b42b63cf | 1036 | IB_QPT_RAW_ETHERTYPE, |
c938a616 | 1037 | IB_QPT_RAW_PACKET = 8, |
b42b63cf SH |
1038 | IB_QPT_XRC_INI = 9, |
1039 | IB_QPT_XRC_TGT, | |
0134f16b JM |
1040 | IB_QPT_MAX, |
1041 | /* Reserve a range for qp types internal to the low level driver. | |
1042 | * These qp types will not be visible at the IB core layer, so the | |
1043 | * IB_QPT_MAX usages should not be affected in the core layer | |
1044 | */ | |
1045 | IB_QPT_RESERVED1 = 0x1000, | |
1046 | IB_QPT_RESERVED2, | |
1047 | IB_QPT_RESERVED3, | |
1048 | IB_QPT_RESERVED4, | |
1049 | IB_QPT_RESERVED5, | |
1050 | IB_QPT_RESERVED6, | |
1051 | IB_QPT_RESERVED7, | |
1052 | IB_QPT_RESERVED8, | |
1053 | IB_QPT_RESERVED9, | |
1054 | IB_QPT_RESERVED10, | |
1da177e4 LT |
1055 | }; |
1056 | ||
b846f25a | 1057 | enum ib_qp_create_flags { |
47ee1b9f RL |
1058 | IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0, |
1059 | IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1, | |
8a06ce59 LR |
1060 | IB_QP_CREATE_CROSS_CHANNEL = 1 << 2, |
1061 | IB_QP_CREATE_MANAGED_SEND = 1 << 3, | |
1062 | IB_QP_CREATE_MANAGED_RECV = 1 << 4, | |
90f1d1b4 | 1063 | IB_QP_CREATE_NETIF_QP = 1 << 5, |
1b01d335 | 1064 | IB_QP_CREATE_SIGNATURE_EN = 1 << 6, |
7855f584 | 1065 | /* FREE = 1 << 7, */ |
b531b909 | 1066 | IB_QP_CREATE_SCATTER_FCS = 1 << 8, |
9c2b270e | 1067 | IB_QP_CREATE_CVLAN_STRIPPING = 1 << 9, |
02984cc7 | 1068 | IB_QP_CREATE_SOURCE_QPN = 1 << 10, |
d2b57063 JM |
1069 | /* reserve bits 26-31 for low level drivers' internal use */ |
1070 | IB_QP_CREATE_RESERVED_START = 1 << 26, | |
1071 | IB_QP_CREATE_RESERVED_END = 1 << 31, | |
b846f25a EC |
1072 | }; |
1073 | ||
73c40c61 YH |
1074 | /* |
1075 | * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler | |
1076 | * callback to destroy the passed in QP. | |
1077 | */ | |
1078 | ||
1da177e4 LT |
1079 | struct ib_qp_init_attr { |
1080 | void (*event_handler)(struct ib_event *, void *); | |
1081 | void *qp_context; | |
1082 | struct ib_cq *send_cq; | |
1083 | struct ib_cq *recv_cq; | |
1084 | struct ib_srq *srq; | |
b42b63cf | 1085 | struct ib_xrcd *xrcd; /* XRC TGT QPs only */ |
1da177e4 LT |
1086 | struct ib_qp_cap cap; |
1087 | enum ib_sig_type sq_sig_type; | |
1088 | enum ib_qp_type qp_type; | |
b846f25a | 1089 | enum ib_qp_create_flags create_flags; |
a060b562 CH |
1090 | |
1091 | /* | |
1092 | * Only needed for special QP types, or when using the RW API. | |
1093 | */ | |
1094 | u8 port_num; | |
a9017e23 | 1095 | struct ib_rwq_ind_table *rwq_ind_tbl; |
02984cc7 | 1096 | u32 source_qpn; |
1da177e4 LT |
1097 | }; |
1098 | ||
0e0ec7e0 SH |
1099 | struct ib_qp_open_attr { |
1100 | void (*event_handler)(struct ib_event *, void *); | |
1101 | void *qp_context; | |
1102 | u32 qp_num; | |
1103 | enum ib_qp_type qp_type; | |
1104 | }; | |
1105 | ||
1da177e4 LT |
1106 | enum ib_rnr_timeout { |
1107 | IB_RNR_TIMER_655_36 = 0, | |
1108 | IB_RNR_TIMER_000_01 = 1, | |
1109 | IB_RNR_TIMER_000_02 = 2, | |
1110 | IB_RNR_TIMER_000_03 = 3, | |
1111 | IB_RNR_TIMER_000_04 = 4, | |
1112 | IB_RNR_TIMER_000_06 = 5, | |
1113 | IB_RNR_TIMER_000_08 = 6, | |
1114 | IB_RNR_TIMER_000_12 = 7, | |
1115 | IB_RNR_TIMER_000_16 = 8, | |
1116 | IB_RNR_TIMER_000_24 = 9, | |
1117 | IB_RNR_TIMER_000_32 = 10, | |
1118 | IB_RNR_TIMER_000_48 = 11, | |
1119 | IB_RNR_TIMER_000_64 = 12, | |
1120 | IB_RNR_TIMER_000_96 = 13, | |
1121 | IB_RNR_TIMER_001_28 = 14, | |
1122 | IB_RNR_TIMER_001_92 = 15, | |
1123 | IB_RNR_TIMER_002_56 = 16, | |
1124 | IB_RNR_TIMER_003_84 = 17, | |
1125 | IB_RNR_TIMER_005_12 = 18, | |
1126 | IB_RNR_TIMER_007_68 = 19, | |
1127 | IB_RNR_TIMER_010_24 = 20, | |
1128 | IB_RNR_TIMER_015_36 = 21, | |
1129 | IB_RNR_TIMER_020_48 = 22, | |
1130 | IB_RNR_TIMER_030_72 = 23, | |
1131 | IB_RNR_TIMER_040_96 = 24, | |
1132 | IB_RNR_TIMER_061_44 = 25, | |
1133 | IB_RNR_TIMER_081_92 = 26, | |
1134 | IB_RNR_TIMER_122_88 = 27, | |
1135 | IB_RNR_TIMER_163_84 = 28, | |
1136 | IB_RNR_TIMER_245_76 = 29, | |
1137 | IB_RNR_TIMER_327_68 = 30, | |
1138 | IB_RNR_TIMER_491_52 = 31 | |
1139 | }; | |
1140 | ||
1141 | enum ib_qp_attr_mask { | |
1142 | IB_QP_STATE = 1, | |
1143 | IB_QP_CUR_STATE = (1<<1), | |
1144 | IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2), | |
1145 | IB_QP_ACCESS_FLAGS = (1<<3), | |
1146 | IB_QP_PKEY_INDEX = (1<<4), | |
1147 | IB_QP_PORT = (1<<5), | |
1148 | IB_QP_QKEY = (1<<6), | |
1149 | IB_QP_AV = (1<<7), | |
1150 | IB_QP_PATH_MTU = (1<<8), | |
1151 | IB_QP_TIMEOUT = (1<<9), | |
1152 | IB_QP_RETRY_CNT = (1<<10), | |
1153 | IB_QP_RNR_RETRY = (1<<11), | |
1154 | IB_QP_RQ_PSN = (1<<12), | |
1155 | IB_QP_MAX_QP_RD_ATOMIC = (1<<13), | |
1156 | IB_QP_ALT_PATH = (1<<14), | |
1157 | IB_QP_MIN_RNR_TIMER = (1<<15), | |
1158 | IB_QP_SQ_PSN = (1<<16), | |
1159 | IB_QP_MAX_DEST_RD_ATOMIC = (1<<17), | |
1160 | IB_QP_PATH_MIG_STATE = (1<<18), | |
1161 | IB_QP_CAP = (1<<19), | |
dd5f03be | 1162 | IB_QP_DEST_QPN = (1<<20), |
aa744cc0 MB |
1163 | IB_QP_RESERVED1 = (1<<21), |
1164 | IB_QP_RESERVED2 = (1<<22), | |
1165 | IB_QP_RESERVED3 = (1<<23), | |
1166 | IB_QP_RESERVED4 = (1<<24), | |
528e5a1b | 1167 | IB_QP_RATE_LIMIT = (1<<25), |
1da177e4 LT |
1168 | }; |
1169 | ||
1170 | enum ib_qp_state { | |
1171 | IB_QPS_RESET, | |
1172 | IB_QPS_INIT, | |
1173 | IB_QPS_RTR, | |
1174 | IB_QPS_RTS, | |
1175 | IB_QPS_SQD, | |
1176 | IB_QPS_SQE, | |
1177 | IB_QPS_ERR | |
1178 | }; | |
1179 | ||
1180 | enum ib_mig_state { | |
1181 | IB_MIG_MIGRATED, | |
1182 | IB_MIG_REARM, | |
1183 | IB_MIG_ARMED | |
1184 | }; | |
1185 | ||
7083e42e SM |
1186 | enum ib_mw_type { |
1187 | IB_MW_TYPE_1 = 1, | |
1188 | IB_MW_TYPE_2 = 2 | |
1189 | }; | |
1190 | ||
1da177e4 LT |
1191 | struct ib_qp_attr { |
1192 | enum ib_qp_state qp_state; | |
1193 | enum ib_qp_state cur_qp_state; | |
1194 | enum ib_mtu path_mtu; | |
1195 | enum ib_mig_state path_mig_state; | |
1196 | u32 qkey; | |
1197 | u32 rq_psn; | |
1198 | u32 sq_psn; | |
1199 | u32 dest_qp_num; | |
1200 | int qp_access_flags; | |
1201 | struct ib_qp_cap cap; | |
90898850 DC |
1202 | struct rdma_ah_attr ah_attr; |
1203 | struct rdma_ah_attr alt_ah_attr; | |
1da177e4 LT |
1204 | u16 pkey_index; |
1205 | u16 alt_pkey_index; | |
1206 | u8 en_sqd_async_notify; | |
1207 | u8 sq_draining; | |
1208 | u8 max_rd_atomic; | |
1209 | u8 max_dest_rd_atomic; | |
1210 | u8 min_rnr_timer; | |
1211 | u8 port_num; | |
1212 | u8 timeout; | |
1213 | u8 retry_cnt; | |
1214 | u8 rnr_retry; | |
1215 | u8 alt_port_num; | |
1216 | u8 alt_timeout; | |
528e5a1b | 1217 | u32 rate_limit; |
1da177e4 LT |
1218 | }; |
1219 | ||
1220 | enum ib_wr_opcode { | |
1221 | IB_WR_RDMA_WRITE, | |
1222 | IB_WR_RDMA_WRITE_WITH_IMM, | |
1223 | IB_WR_SEND, | |
1224 | IB_WR_SEND_WITH_IMM, | |
1225 | IB_WR_RDMA_READ, | |
1226 | IB_WR_ATOMIC_CMP_AND_SWP, | |
c93570f2 | 1227 | IB_WR_ATOMIC_FETCH_AND_ADD, |
0f39cf3d RD |
1228 | IB_WR_LSO, |
1229 | IB_WR_SEND_WITH_INV, | |
00f7ec36 SW |
1230 | IB_WR_RDMA_READ_WITH_INV, |
1231 | IB_WR_LOCAL_INV, | |
4c67e2bf | 1232 | IB_WR_REG_MR, |
5e80ba8f VS |
1233 | IB_WR_MASKED_ATOMIC_CMP_AND_SWP, |
1234 | IB_WR_MASKED_ATOMIC_FETCH_AND_ADD, | |
1b01d335 | 1235 | IB_WR_REG_SIG_MR, |
0134f16b JM |
1236 | /* reserve values for low level drivers' internal use. |
1237 | * These values will not be used at all in the ib core layer. | |
1238 | */ | |
1239 | IB_WR_RESERVED1 = 0xf0, | |
1240 | IB_WR_RESERVED2, | |
1241 | IB_WR_RESERVED3, | |
1242 | IB_WR_RESERVED4, | |
1243 | IB_WR_RESERVED5, | |
1244 | IB_WR_RESERVED6, | |
1245 | IB_WR_RESERVED7, | |
1246 | IB_WR_RESERVED8, | |
1247 | IB_WR_RESERVED9, | |
1248 | IB_WR_RESERVED10, | |
1da177e4 LT |
1249 | }; |
1250 | ||
1251 | enum ib_send_flags { | |
1252 | IB_SEND_FENCE = 1, | |
1253 | IB_SEND_SIGNALED = (1<<1), | |
1254 | IB_SEND_SOLICITED = (1<<2), | |
e0605d91 | 1255 | IB_SEND_INLINE = (1<<3), |
0134f16b JM |
1256 | IB_SEND_IP_CSUM = (1<<4), |
1257 | ||
1258 | /* reserve bits 26-31 for low level drivers' internal use */ | |
1259 | IB_SEND_RESERVED_START = (1 << 26), | |
1260 | IB_SEND_RESERVED_END = (1 << 31), | |
1da177e4 LT |
1261 | }; |
1262 | ||
1263 | struct ib_sge { | |
1264 | u64 addr; | |
1265 | u32 length; | |
1266 | u32 lkey; | |
1267 | }; | |
1268 | ||
14d3a3b2 CH |
1269 | struct ib_cqe { |
1270 | void (*done)(struct ib_cq *cq, struct ib_wc *wc); | |
1271 | }; | |
1272 | ||
1da177e4 LT |
1273 | struct ib_send_wr { |
1274 | struct ib_send_wr *next; | |
14d3a3b2 CH |
1275 | union { |
1276 | u64 wr_id; | |
1277 | struct ib_cqe *wr_cqe; | |
1278 | }; | |
1da177e4 LT |
1279 | struct ib_sge *sg_list; |
1280 | int num_sge; | |
1281 | enum ib_wr_opcode opcode; | |
1282 | int send_flags; | |
0f39cf3d RD |
1283 | union { |
1284 | __be32 imm_data; | |
1285 | u32 invalidate_rkey; | |
1286 | } ex; | |
1da177e4 LT |
1287 | }; |
1288 | ||
e622f2f4 CH |
1289 | struct ib_rdma_wr { |
1290 | struct ib_send_wr wr; | |
1291 | u64 remote_addr; | |
1292 | u32 rkey; | |
1293 | }; | |
1294 | ||
1295 | static inline struct ib_rdma_wr *rdma_wr(struct ib_send_wr *wr) | |
1296 | { | |
1297 | return container_of(wr, struct ib_rdma_wr, wr); | |
1298 | } | |
1299 | ||
1300 | struct ib_atomic_wr { | |
1301 | struct ib_send_wr wr; | |
1302 | u64 remote_addr; | |
1303 | u64 compare_add; | |
1304 | u64 swap; | |
1305 | u64 compare_add_mask; | |
1306 | u64 swap_mask; | |
1307 | u32 rkey; | |
1308 | }; | |
1309 | ||
1310 | static inline struct ib_atomic_wr *atomic_wr(struct ib_send_wr *wr) | |
1311 | { | |
1312 | return container_of(wr, struct ib_atomic_wr, wr); | |
1313 | } | |
1314 | ||
1315 | struct ib_ud_wr { | |
1316 | struct ib_send_wr wr; | |
1317 | struct ib_ah *ah; | |
1318 | void *header; | |
1319 | int hlen; | |
1320 | int mss; | |
1321 | u32 remote_qpn; | |
1322 | u32 remote_qkey; | |
1323 | u16 pkey_index; /* valid for GSI only */ | |
1324 | u8 port_num; /* valid for DR SMPs on switch only */ | |
1325 | }; | |
1326 | ||
1327 | static inline struct ib_ud_wr *ud_wr(struct ib_send_wr *wr) | |
1328 | { | |
1329 | return container_of(wr, struct ib_ud_wr, wr); | |
1330 | } | |
1331 | ||
4c67e2bf SG |
1332 | struct ib_reg_wr { |
1333 | struct ib_send_wr wr; | |
1334 | struct ib_mr *mr; | |
1335 | u32 key; | |
1336 | int access; | |
1337 | }; | |
1338 | ||
1339 | static inline struct ib_reg_wr *reg_wr(struct ib_send_wr *wr) | |
1340 | { | |
1341 | return container_of(wr, struct ib_reg_wr, wr); | |
1342 | } | |
1343 | ||
e622f2f4 CH |
1344 | struct ib_sig_handover_wr { |
1345 | struct ib_send_wr wr; | |
1346 | struct ib_sig_attrs *sig_attrs; | |
1347 | struct ib_mr *sig_mr; | |
1348 | int access_flags; | |
1349 | struct ib_sge *prot; | |
1350 | }; | |
1351 | ||
1352 | static inline struct ib_sig_handover_wr *sig_handover_wr(struct ib_send_wr *wr) | |
1353 | { | |
1354 | return container_of(wr, struct ib_sig_handover_wr, wr); | |
1355 | } | |
1356 | ||
1da177e4 LT |
1357 | struct ib_recv_wr { |
1358 | struct ib_recv_wr *next; | |
14d3a3b2 CH |
1359 | union { |
1360 | u64 wr_id; | |
1361 | struct ib_cqe *wr_cqe; | |
1362 | }; | |
1da177e4 LT |
1363 | struct ib_sge *sg_list; |
1364 | int num_sge; | |
1365 | }; | |
1366 | ||
1367 | enum ib_access_flags { | |
1368 | IB_ACCESS_LOCAL_WRITE = 1, | |
1369 | IB_ACCESS_REMOTE_WRITE = (1<<1), | |
1370 | IB_ACCESS_REMOTE_READ = (1<<2), | |
1371 | IB_ACCESS_REMOTE_ATOMIC = (1<<3), | |
7083e42e | 1372 | IB_ACCESS_MW_BIND = (1<<4), |
860f10a7 SG |
1373 | IB_ZERO_BASED = (1<<5), |
1374 | IB_ACCESS_ON_DEMAND = (1<<6), | |
0008b84e | 1375 | IB_ACCESS_HUGETLB = (1<<7), |
1da177e4 LT |
1376 | }; |
1377 | ||
b7d3e0a9 CH |
1378 | /* |
1379 | * XXX: these are apparently used for ->rereg_user_mr, no idea why they | |
1380 | * are hidden here instead of a uapi header! | |
1381 | */ | |
1da177e4 LT |
1382 | enum ib_mr_rereg_flags { |
1383 | IB_MR_REREG_TRANS = 1, | |
1384 | IB_MR_REREG_PD = (1<<1), | |
7e6edb9b MB |
1385 | IB_MR_REREG_ACCESS = (1<<2), |
1386 | IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1) | |
1da177e4 LT |
1387 | }; |
1388 | ||
1da177e4 LT |
1389 | struct ib_fmr_attr { |
1390 | int max_pages; | |
1391 | int max_maps; | |
d36f34aa | 1392 | u8 page_shift; |
1da177e4 LT |
1393 | }; |
1394 | ||
882214e2 HE |
1395 | struct ib_umem; |
1396 | ||
38321256 MB |
1397 | enum rdma_remove_reason { |
1398 | /* Userspace requested uobject deletion. Call could fail */ | |
1399 | RDMA_REMOVE_DESTROY, | |
1400 | /* Context deletion. This call should delete the actual object itself */ | |
1401 | RDMA_REMOVE_CLOSE, | |
1402 | /* Driver is being hot-unplugged. This call should delete the actual object itself */ | |
1403 | RDMA_REMOVE_DRIVER_REMOVE, | |
1404 | /* Context is being cleaned-up, but commit was just completed */ | |
1405 | RDMA_REMOVE_DURING_CLEANUP, | |
1406 | }; | |
1407 | ||
43579b5f PP |
1408 | struct ib_rdmacg_object { |
1409 | #ifdef CONFIG_CGROUP_RDMA | |
1410 | struct rdma_cgroup *cg; /* owner rdma cgroup */ | |
1411 | #endif | |
1412 | }; | |
1413 | ||
e2773c06 RD |
1414 | struct ib_ucontext { |
1415 | struct ib_device *device; | |
771addf6 | 1416 | struct ib_uverbs_file *ufile; |
f7c6a7b5 | 1417 | int closing; |
8ada2c1c | 1418 | |
38321256 MB |
1419 | /* locking the uobjects_list */ |
1420 | struct mutex uobjects_lock; | |
1421 | struct list_head uobjects; | |
1422 | /* protects cleanup process from other actions */ | |
1423 | struct rw_semaphore cleanup_rwsem; | |
1424 | enum rdma_remove_reason cleanup_reason; | |
1425 | ||
8ada2c1c | 1426 | struct pid *tgid; |
882214e2 HE |
1427 | #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING |
1428 | struct rb_root umem_tree; | |
1429 | /* | |
1430 | * Protects .umem_rbroot and tree, as well as odp_mrs_count and | |
1431 | * mmu notifiers registration. | |
1432 | */ | |
1433 | struct rw_semaphore umem_rwsem; | |
1434 | void (*invalidate_range)(struct ib_umem *umem, | |
1435 | unsigned long start, unsigned long end); | |
1436 | ||
1437 | struct mmu_notifier mn; | |
1438 | atomic_t notifier_count; | |
1439 | /* A list of umems that don't have private mmu notifier counters yet. */ | |
1440 | struct list_head no_private_counters; | |
1441 | int odp_mrs_count; | |
1442 | #endif | |
43579b5f PP |
1443 | |
1444 | struct ib_rdmacg_object cg_obj; | |
e2773c06 RD |
1445 | }; |
1446 | ||
1447 | struct ib_uobject { | |
1448 | u64 user_handle; /* handle given to us by userspace */ | |
1449 | struct ib_ucontext *context; /* associated user context */ | |
9ead190b | 1450 | void *object; /* containing object */ |
e2773c06 | 1451 | struct list_head list; /* link to context's list */ |
43579b5f | 1452 | struct ib_rdmacg_object cg_obj; /* rdmacg object */ |
b3d636b0 | 1453 | int id; /* index into kernel idr */ |
9ead190b | 1454 | struct kref ref; |
38321256 | 1455 | atomic_t usecnt; /* protects exclusive access */ |
d144da8c | 1456 | struct rcu_head rcu; /* kfree_rcu() overhead */ |
38321256 MB |
1457 | |
1458 | const struct uverbs_obj_type *type; | |
e2773c06 RD |
1459 | }; |
1460 | ||
cf8966b3 MB |
1461 | struct ib_uobject_file { |
1462 | struct ib_uobject uobj; | |
1463 | /* ufile contains the lock between context release and file close */ | |
1464 | struct ib_uverbs_file *ufile; | |
e2773c06 RD |
1465 | }; |
1466 | ||
e2773c06 | 1467 | struct ib_udata { |
309243ec | 1468 | const void __user *inbuf; |
e2773c06 RD |
1469 | void __user *outbuf; |
1470 | size_t inlen; | |
1471 | size_t outlen; | |
1472 | }; | |
1473 | ||
1da177e4 | 1474 | struct ib_pd { |
96249d70 | 1475 | u32 local_dma_lkey; |
ed082d36 | 1476 | u32 flags; |
e2773c06 RD |
1477 | struct ib_device *device; |
1478 | struct ib_uobject *uobject; | |
1479 | atomic_t usecnt; /* count all resources */ | |
50d46335 | 1480 | |
ed082d36 CH |
1481 | u32 unsafe_global_rkey; |
1482 | ||
50d46335 CH |
1483 | /* |
1484 | * Implementation details of the RDMA core, don't use in drivers: | |
1485 | */ | |
1486 | struct ib_mr *__internal_mr; | |
1da177e4 LT |
1487 | }; |
1488 | ||
59991f94 SH |
1489 | struct ib_xrcd { |
1490 | struct ib_device *device; | |
d3d72d90 | 1491 | atomic_t usecnt; /* count all exposed resources */ |
53d0bd1e | 1492 | struct inode *inode; |
d3d72d90 SH |
1493 | |
1494 | struct mutex tgt_qp_mutex; | |
1495 | struct list_head tgt_qp_list; | |
59991f94 SH |
1496 | }; |
1497 | ||
1da177e4 LT |
1498 | struct ib_ah { |
1499 | struct ib_device *device; | |
1500 | struct ib_pd *pd; | |
e2773c06 | 1501 | struct ib_uobject *uobject; |
44c58487 | 1502 | enum rdma_ah_attr_type type; |
1da177e4 LT |
1503 | }; |
1504 | ||
1505 | typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context); | |
1506 | ||
14d3a3b2 CH |
1507 | enum ib_poll_context { |
1508 | IB_POLL_DIRECT, /* caller context, no hw completions */ | |
1509 | IB_POLL_SOFTIRQ, /* poll from softirq context */ | |
1510 | IB_POLL_WORKQUEUE, /* poll from workqueue */ | |
1511 | }; | |
1512 | ||
1da177e4 | 1513 | struct ib_cq { |
e2773c06 RD |
1514 | struct ib_device *device; |
1515 | struct ib_uobject *uobject; | |
1516 | ib_comp_handler comp_handler; | |
1517 | void (*event_handler)(struct ib_event *, void *); | |
4deccd6d | 1518 | void *cq_context; |
e2773c06 RD |
1519 | int cqe; |
1520 | atomic_t usecnt; /* count number of work queues */ | |
14d3a3b2 CH |
1521 | enum ib_poll_context poll_ctx; |
1522 | struct ib_wc *wc; | |
1523 | union { | |
1524 | struct irq_poll iop; | |
1525 | struct work_struct work; | |
1526 | }; | |
1da177e4 LT |
1527 | }; |
1528 | ||
1529 | struct ib_srq { | |
d41fcc67 RD |
1530 | struct ib_device *device; |
1531 | struct ib_pd *pd; | |
1532 | struct ib_uobject *uobject; | |
1533 | void (*event_handler)(struct ib_event *, void *); | |
1534 | void *srq_context; | |
96104eda | 1535 | enum ib_srq_type srq_type; |
1da177e4 | 1536 | atomic_t usecnt; |
418d5130 SH |
1537 | |
1538 | union { | |
1539 | struct { | |
1540 | struct ib_xrcd *xrcd; | |
1541 | struct ib_cq *cq; | |
1542 | u32 srq_num; | |
1543 | } xrc; | |
1544 | } ext; | |
1da177e4 LT |
1545 | }; |
1546 | ||
ebaaee25 NO |
1547 | enum ib_raw_packet_caps { |
1548 | /* Strip cvlan from incoming packet and report it in the matching work | |
1549 | * completion is supported. | |
1550 | */ | |
1551 | IB_RAW_PACKET_CAP_CVLAN_STRIPPING = (1 << 0), | |
1552 | /* Scatter FCS field of an incoming packet to host memory is supported. | |
1553 | */ | |
1554 | IB_RAW_PACKET_CAP_SCATTER_FCS = (1 << 1), | |
1555 | /* Checksum offloads are supported (for both send and receive). */ | |
1556 | IB_RAW_PACKET_CAP_IP_CSUM = (1 << 2), | |
7d9336d8 MG |
1557 | /* When a packet is received for an RQ with no receive WQEs, the |
1558 | * packet processing is delayed. | |
1559 | */ | |
1560 | IB_RAW_PACKET_CAP_DELAY_DROP = (1 << 3), | |
ebaaee25 NO |
1561 | }; |
1562 | ||
5fd251c8 YH |
1563 | enum ib_wq_type { |
1564 | IB_WQT_RQ | |
1565 | }; | |
1566 | ||
1567 | enum ib_wq_state { | |
1568 | IB_WQS_RESET, | |
1569 | IB_WQS_RDY, | |
1570 | IB_WQS_ERR | |
1571 | }; | |
1572 | ||
1573 | struct ib_wq { | |
1574 | struct ib_device *device; | |
1575 | struct ib_uobject *uobject; | |
1576 | void *wq_context; | |
1577 | void (*event_handler)(struct ib_event *, void *); | |
1578 | struct ib_pd *pd; | |
1579 | struct ib_cq *cq; | |
1580 | u32 wq_num; | |
1581 | enum ib_wq_state state; | |
1582 | enum ib_wq_type wq_type; | |
1583 | atomic_t usecnt; | |
1584 | }; | |
1585 | ||
10bac72b NO |
1586 | enum ib_wq_flags { |
1587 | IB_WQ_FLAGS_CVLAN_STRIPPING = 1 << 0, | |
27b0df11 | 1588 | IB_WQ_FLAGS_SCATTER_FCS = 1 << 1, |
7d9336d8 | 1589 | IB_WQ_FLAGS_DELAY_DROP = 1 << 2, |
10bac72b NO |
1590 | }; |
1591 | ||
5fd251c8 YH |
1592 | struct ib_wq_init_attr { |
1593 | void *wq_context; | |
1594 | enum ib_wq_type wq_type; | |
1595 | u32 max_wr; | |
1596 | u32 max_sge; | |
1597 | struct ib_cq *cq; | |
1598 | void (*event_handler)(struct ib_event *, void *); | |
10bac72b | 1599 | u32 create_flags; /* Use enum ib_wq_flags */ |
5fd251c8 YH |
1600 | }; |
1601 | ||
1602 | enum ib_wq_attr_mask { | |
10bac72b NO |
1603 | IB_WQ_STATE = 1 << 0, |
1604 | IB_WQ_CUR_STATE = 1 << 1, | |
1605 | IB_WQ_FLAGS = 1 << 2, | |
5fd251c8 YH |
1606 | }; |
1607 | ||
1608 | struct ib_wq_attr { | |
1609 | enum ib_wq_state wq_state; | |
1610 | enum ib_wq_state curr_wq_state; | |
10bac72b NO |
1611 | u32 flags; /* Use enum ib_wq_flags */ |
1612 | u32 flags_mask; /* Use enum ib_wq_flags */ | |
5fd251c8 YH |
1613 | }; |
1614 | ||
6d39786b YH |
1615 | struct ib_rwq_ind_table { |
1616 | struct ib_device *device; | |
1617 | struct ib_uobject *uobject; | |
1618 | atomic_t usecnt; | |
1619 | u32 ind_tbl_num; | |
1620 | u32 log_ind_tbl_size; | |
1621 | struct ib_wq **ind_tbl; | |
1622 | }; | |
1623 | ||
1624 | struct ib_rwq_ind_table_init_attr { | |
1625 | u32 log_ind_tbl_size; | |
1626 | /* Each entry is a pointer to Receive Work Queue */ | |
1627 | struct ib_wq **ind_tbl; | |
1628 | }; | |
1629 | ||
d291f1a6 DJ |
1630 | enum port_pkey_state { |
1631 | IB_PORT_PKEY_NOT_VALID = 0, | |
1632 | IB_PORT_PKEY_VALID = 1, | |
1633 | IB_PORT_PKEY_LISTED = 2, | |
1634 | }; | |
1635 | ||
1636 | struct ib_qp_security; | |
1637 | ||
1638 | struct ib_port_pkey { | |
1639 | enum port_pkey_state state; | |
1640 | u16 pkey_index; | |
1641 | u8 port_num; | |
1642 | struct list_head qp_list; | |
1643 | struct list_head to_error_list; | |
1644 | struct ib_qp_security *sec; | |
1645 | }; | |
1646 | ||
1647 | struct ib_ports_pkeys { | |
1648 | struct ib_port_pkey main; | |
1649 | struct ib_port_pkey alt; | |
1650 | }; | |
1651 | ||
1652 | struct ib_qp_security { | |
1653 | struct ib_qp *qp; | |
1654 | struct ib_device *dev; | |
1655 | /* Hold this mutex when changing port and pkey settings. */ | |
1656 | struct mutex mutex; | |
1657 | struct ib_ports_pkeys *ports_pkeys; | |
1658 | /* A list of all open shared QP handles. Required to enforce security | |
1659 | * properly for all users of a shared QP. | |
1660 | */ | |
1661 | struct list_head shared_qp_list; | |
1662 | void *security; | |
1663 | bool destroying; | |
1664 | atomic_t error_list_count; | |
1665 | struct completion error_complete; | |
1666 | int error_comps_pending; | |
1667 | }; | |
1668 | ||
632bc3f6 BVA |
1669 | /* |
1670 | * @max_write_sge: Maximum SGE elements per RDMA WRITE request. | |
1671 | * @max_read_sge: Maximum SGE elements per RDMA READ request. | |
1672 | */ | |
1da177e4 LT |
1673 | struct ib_qp { |
1674 | struct ib_device *device; | |
1675 | struct ib_pd *pd; | |
1676 | struct ib_cq *send_cq; | |
1677 | struct ib_cq *recv_cq; | |
fffb0383 CH |
1678 | spinlock_t mr_lock; |
1679 | int mrs_used; | |
a060b562 | 1680 | struct list_head rdma_mrs; |
0e353e34 | 1681 | struct list_head sig_mrs; |
1da177e4 | 1682 | struct ib_srq *srq; |
b42b63cf | 1683 | struct ib_xrcd *xrcd; /* XRC TGT QPs only */ |
d3d72d90 | 1684 | struct list_head xrcd_list; |
fffb0383 | 1685 | |
319a441d HHZ |
1686 | /* count times opened, mcast attaches, flow attaches */ |
1687 | atomic_t usecnt; | |
0e0ec7e0 SH |
1688 | struct list_head open_list; |
1689 | struct ib_qp *real_qp; | |
e2773c06 | 1690 | struct ib_uobject *uobject; |
1da177e4 LT |
1691 | void (*event_handler)(struct ib_event *, void *); |
1692 | void *qp_context; | |
1693 | u32 qp_num; | |
632bc3f6 BVA |
1694 | u32 max_write_sge; |
1695 | u32 max_read_sge; | |
1da177e4 | 1696 | enum ib_qp_type qp_type; |
a9017e23 | 1697 | struct ib_rwq_ind_table *rwq_ind_tbl; |
d291f1a6 | 1698 | struct ib_qp_security *qp_sec; |
498ca3c8 | 1699 | u8 port; |
1da177e4 LT |
1700 | }; |
1701 | ||
1702 | struct ib_mr { | |
e2773c06 RD |
1703 | struct ib_device *device; |
1704 | struct ib_pd *pd; | |
e2773c06 RD |
1705 | u32 lkey; |
1706 | u32 rkey; | |
4c67e2bf SG |
1707 | u64 iova; |
1708 | u32 length; | |
1709 | unsigned int page_size; | |
d4a85c30 | 1710 | bool need_inval; |
fffb0383 CH |
1711 | union { |
1712 | struct ib_uobject *uobject; /* user */ | |
1713 | struct list_head qp_entry; /* FR */ | |
1714 | }; | |
1da177e4 LT |
1715 | }; |
1716 | ||
1717 | struct ib_mw { | |
1718 | struct ib_device *device; | |
1719 | struct ib_pd *pd; | |
e2773c06 | 1720 | struct ib_uobject *uobject; |
1da177e4 | 1721 | u32 rkey; |
7083e42e | 1722 | enum ib_mw_type type; |
1da177e4 LT |
1723 | }; |
1724 | ||
1725 | struct ib_fmr { | |
1726 | struct ib_device *device; | |
1727 | struct ib_pd *pd; | |
1728 | struct list_head list; | |
1729 | u32 lkey; | |
1730 | u32 rkey; | |
1731 | }; | |
1732 | ||
319a441d HHZ |
1733 | /* Supported steering options */ |
1734 | enum ib_flow_attr_type { | |
1735 | /* steering according to rule specifications */ | |
1736 | IB_FLOW_ATTR_NORMAL = 0x0, | |
1737 | /* default unicast and multicast rule - | |
1738 | * receive all Eth traffic which isn't steered to any QP | |
1739 | */ | |
1740 | IB_FLOW_ATTR_ALL_DEFAULT = 0x1, | |
1741 | /* default multicast rule - | |
1742 | * receive all Eth multicast traffic which isn't steered to any QP | |
1743 | */ | |
1744 | IB_FLOW_ATTR_MC_DEFAULT = 0x2, | |
1745 | /* sniffer rule - receive all port traffic */ | |
1746 | IB_FLOW_ATTR_SNIFFER = 0x3 | |
1747 | }; | |
1748 | ||
1749 | /* Supported steering header types */ | |
1750 | enum ib_flow_spec_type { | |
1751 | /* L2 headers*/ | |
76bd23b3 MR |
1752 | IB_FLOW_SPEC_ETH = 0x20, |
1753 | IB_FLOW_SPEC_IB = 0x22, | |
319a441d | 1754 | /* L3 header*/ |
76bd23b3 MR |
1755 | IB_FLOW_SPEC_IPV4 = 0x30, |
1756 | IB_FLOW_SPEC_IPV6 = 0x31, | |
319a441d | 1757 | /* L4 headers*/ |
76bd23b3 MR |
1758 | IB_FLOW_SPEC_TCP = 0x40, |
1759 | IB_FLOW_SPEC_UDP = 0x41, | |
0dbf3332 | 1760 | IB_FLOW_SPEC_VXLAN_TUNNEL = 0x50, |
fbf46860 | 1761 | IB_FLOW_SPEC_INNER = 0x100, |
460d0198 MR |
1762 | /* Actions */ |
1763 | IB_FLOW_SPEC_ACTION_TAG = 0x1000, | |
483a3966 | 1764 | IB_FLOW_SPEC_ACTION_DROP = 0x1001, |
319a441d | 1765 | }; |
240ae00e | 1766 | #define IB_FLOW_SPEC_LAYER_MASK 0xF0 |
fbf46860 | 1767 | #define IB_FLOW_SPEC_SUPPORT_LAYERS 8 |
22878dbc | 1768 | |
319a441d HHZ |
1769 | /* Flow steering rule priority is set according to it's domain. |
1770 | * Lower domain value means higher priority. | |
1771 | */ | |
1772 | enum ib_flow_domain { | |
1773 | IB_FLOW_DOMAIN_USER, | |
1774 | IB_FLOW_DOMAIN_ETHTOOL, | |
1775 | IB_FLOW_DOMAIN_RFS, | |
1776 | IB_FLOW_DOMAIN_NIC, | |
1777 | IB_FLOW_DOMAIN_NUM /* Must be last */ | |
1778 | }; | |
1779 | ||
a3100a78 MV |
1780 | enum ib_flow_flags { |
1781 | IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */ | |
1782 | IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 2 /* Must be last */ | |
1783 | }; | |
1784 | ||
319a441d HHZ |
1785 | struct ib_flow_eth_filter { |
1786 | u8 dst_mac[6]; | |
1787 | u8 src_mac[6]; | |
1788 | __be16 ether_type; | |
1789 | __be16 vlan_tag; | |
15dfbd6b MG |
1790 | /* Must be last */ |
1791 | u8 real_sz[0]; | |
319a441d HHZ |
1792 | }; |
1793 | ||
1794 | struct ib_flow_spec_eth { | |
fbf46860 | 1795 | u32 type; |
319a441d HHZ |
1796 | u16 size; |
1797 | struct ib_flow_eth_filter val; | |
1798 | struct ib_flow_eth_filter mask; | |
1799 | }; | |
1800 | ||
240ae00e MB |
1801 | struct ib_flow_ib_filter { |
1802 | __be16 dlid; | |
1803 | __u8 sl; | |
15dfbd6b MG |
1804 | /* Must be last */ |
1805 | u8 real_sz[0]; | |
240ae00e MB |
1806 | }; |
1807 | ||
1808 | struct ib_flow_spec_ib { | |
fbf46860 | 1809 | u32 type; |
240ae00e MB |
1810 | u16 size; |
1811 | struct ib_flow_ib_filter val; | |
1812 | struct ib_flow_ib_filter mask; | |
1813 | }; | |
1814 | ||
989a3a8f MG |
1815 | /* IPv4 header flags */ |
1816 | enum ib_ipv4_flags { | |
1817 | IB_IPV4_DONT_FRAG = 0x2, /* Don't enable packet fragmentation */ | |
1818 | IB_IPV4_MORE_FRAG = 0X4 /* For All fragmented packets except the | |
1819 | last have this flag set */ | |
1820 | }; | |
1821 | ||
319a441d HHZ |
1822 | struct ib_flow_ipv4_filter { |
1823 | __be32 src_ip; | |
1824 | __be32 dst_ip; | |
989a3a8f MG |
1825 | u8 proto; |
1826 | u8 tos; | |
1827 | u8 ttl; | |
1828 | u8 flags; | |
15dfbd6b MG |
1829 | /* Must be last */ |
1830 | u8 real_sz[0]; | |
319a441d HHZ |
1831 | }; |
1832 | ||
1833 | struct ib_flow_spec_ipv4 { | |
fbf46860 | 1834 | u32 type; |
319a441d HHZ |
1835 | u16 size; |
1836 | struct ib_flow_ipv4_filter val; | |
1837 | struct ib_flow_ipv4_filter mask; | |
1838 | }; | |
1839 | ||
4c2aae71 MG |
1840 | struct ib_flow_ipv6_filter { |
1841 | u8 src_ip[16]; | |
1842 | u8 dst_ip[16]; | |
a72c6a2b MG |
1843 | __be32 flow_label; |
1844 | u8 next_hdr; | |
1845 | u8 traffic_class; | |
1846 | u8 hop_limit; | |
15dfbd6b MG |
1847 | /* Must be last */ |
1848 | u8 real_sz[0]; | |
4c2aae71 MG |
1849 | }; |
1850 | ||
1851 | struct ib_flow_spec_ipv6 { | |
fbf46860 | 1852 | u32 type; |
4c2aae71 MG |
1853 | u16 size; |
1854 | struct ib_flow_ipv6_filter val; | |
1855 | struct ib_flow_ipv6_filter mask; | |
1856 | }; | |
1857 | ||
319a441d HHZ |
1858 | struct ib_flow_tcp_udp_filter { |
1859 | __be16 dst_port; | |
1860 | __be16 src_port; | |
15dfbd6b MG |
1861 | /* Must be last */ |
1862 | u8 real_sz[0]; | |
319a441d HHZ |
1863 | }; |
1864 | ||
1865 | struct ib_flow_spec_tcp_udp { | |
fbf46860 | 1866 | u32 type; |
319a441d HHZ |
1867 | u16 size; |
1868 | struct ib_flow_tcp_udp_filter val; | |
1869 | struct ib_flow_tcp_udp_filter mask; | |
1870 | }; | |
1871 | ||
0dbf3332 MR |
1872 | struct ib_flow_tunnel_filter { |
1873 | __be32 tunnel_id; | |
1874 | u8 real_sz[0]; | |
1875 | }; | |
1876 | ||
1877 | /* ib_flow_spec_tunnel describes the Vxlan tunnel | |
1878 | * the tunnel_id from val has the vni value | |
1879 | */ | |
1880 | struct ib_flow_spec_tunnel { | |
fbf46860 | 1881 | u32 type; |
0dbf3332 MR |
1882 | u16 size; |
1883 | struct ib_flow_tunnel_filter val; | |
1884 | struct ib_flow_tunnel_filter mask; | |
1885 | }; | |
1886 | ||
460d0198 MR |
1887 | struct ib_flow_spec_action_tag { |
1888 | enum ib_flow_spec_type type; | |
1889 | u16 size; | |
1890 | u32 tag_id; | |
1891 | }; | |
1892 | ||
483a3966 SS |
1893 | struct ib_flow_spec_action_drop { |
1894 | enum ib_flow_spec_type type; | |
1895 | u16 size; | |
1896 | }; | |
1897 | ||
319a441d HHZ |
1898 | union ib_flow_spec { |
1899 | struct { | |
fbf46860 | 1900 | u32 type; |
319a441d HHZ |
1901 | u16 size; |
1902 | }; | |
1903 | struct ib_flow_spec_eth eth; | |
240ae00e | 1904 | struct ib_flow_spec_ib ib; |
319a441d HHZ |
1905 | struct ib_flow_spec_ipv4 ipv4; |
1906 | struct ib_flow_spec_tcp_udp tcp_udp; | |
4c2aae71 | 1907 | struct ib_flow_spec_ipv6 ipv6; |
0dbf3332 | 1908 | struct ib_flow_spec_tunnel tunnel; |
460d0198 | 1909 | struct ib_flow_spec_action_tag flow_tag; |
483a3966 | 1910 | struct ib_flow_spec_action_drop drop; |
319a441d HHZ |
1911 | }; |
1912 | ||
1913 | struct ib_flow_attr { | |
1914 | enum ib_flow_attr_type type; | |
1915 | u16 size; | |
1916 | u16 priority; | |
1917 | u32 flags; | |
1918 | u8 num_of_specs; | |
1919 | u8 port; | |
1920 | /* Following are the optional layers according to user request | |
1921 | * struct ib_flow_spec_xxx | |
1922 | * struct ib_flow_spec_yyy | |
1923 | */ | |
1924 | }; | |
1925 | ||
1926 | struct ib_flow { | |
1927 | struct ib_qp *qp; | |
1928 | struct ib_uobject *uobject; | |
1929 | }; | |
1930 | ||
4cd7c947 | 1931 | struct ib_mad_hdr; |
1da177e4 LT |
1932 | struct ib_grh; |
1933 | ||
1934 | enum ib_process_mad_flags { | |
1935 | IB_MAD_IGNORE_MKEY = 1, | |
1936 | IB_MAD_IGNORE_BKEY = 2, | |
1937 | IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY | |
1938 | }; | |
1939 | ||
1940 | enum ib_mad_result { | |
1941 | IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */ | |
1942 | IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */ | |
1943 | IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */ | |
1944 | IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */ | |
1945 | }; | |
1946 | ||
21d6454a | 1947 | struct ib_port_cache { |
883c71fe | 1948 | u64 subnet_prefix; |
21d6454a JW |
1949 | struct ib_pkey_cache *pkey; |
1950 | struct ib_gid_table *gid; | |
1951 | u8 lmc; | |
1952 | enum ib_port_state port_state; | |
1953 | }; | |
1954 | ||
1da177e4 LT |
1955 | struct ib_cache { |
1956 | rwlock_t lock; | |
1957 | struct ib_event_handler event_handler; | |
21d6454a | 1958 | struct ib_port_cache *ports; |
1da177e4 LT |
1959 | }; |
1960 | ||
07ebafba TT |
1961 | struct iw_cm_verbs; |
1962 | ||
7738613e IW |
1963 | struct ib_port_immutable { |
1964 | int pkey_tbl_len; | |
1965 | int gid_tbl_len; | |
f9b22e35 | 1966 | u32 core_cap_flags; |
337877a4 | 1967 | u32 max_mad_size; |
7738613e IW |
1968 | }; |
1969 | ||
2fc77572 VN |
1970 | /* rdma netdev type - specifies protocol type */ |
1971 | enum rdma_netdev_t { | |
f0ad83ac NV |
1972 | RDMA_NETDEV_OPA_VNIC, |
1973 | RDMA_NETDEV_IPOIB, | |
2fc77572 VN |
1974 | }; |
1975 | ||
1976 | /** | |
1977 | * struct rdma_netdev - rdma netdev | |
1978 | * For cases where netstack interfacing is required. | |
1979 | */ | |
1980 | struct rdma_netdev { | |
1981 | void *clnt_priv; | |
1982 | struct ib_device *hca; | |
1983 | u8 port_num; | |
1984 | ||
8e959601 NV |
1985 | /* cleanup function must be specified */ |
1986 | void (*free_rdma_netdev)(struct net_device *netdev); | |
1987 | ||
2fc77572 VN |
1988 | /* control functions */ |
1989 | void (*set_id)(struct net_device *netdev, int id); | |
f0ad83ac NV |
1990 | /* send packet */ |
1991 | int (*send)(struct net_device *dev, struct sk_buff *skb, | |
1992 | struct ib_ah *address, u32 dqpn); | |
1993 | /* multicast */ | |
1994 | int (*attach_mcast)(struct net_device *dev, struct ib_device *hca, | |
1995 | union ib_gid *gid, u16 mlid, | |
1996 | int set_qkey, u32 qkey); | |
1997 | int (*detach_mcast)(struct net_device *dev, struct ib_device *hca, | |
1998 | union ib_gid *gid, u16 mlid); | |
2fc77572 VN |
1999 | }; |
2000 | ||
d291f1a6 DJ |
2001 | struct ib_port_pkey_list { |
2002 | /* Lock to hold while modifying the list. */ | |
2003 | spinlock_t list_lock; | |
2004 | struct list_head pkey_list; | |
2005 | }; | |
2006 | ||
1da177e4 | 2007 | struct ib_device { |
0957c29f BVA |
2008 | /* Do not access @dma_device directly from ULP nor from HW drivers. */ |
2009 | struct device *dma_device; | |
2010 | ||
1da177e4 LT |
2011 | char name[IB_DEVICE_NAME_MAX]; |
2012 | ||
2013 | struct list_head event_handler_list; | |
2014 | spinlock_t event_handler_lock; | |
2015 | ||
17a55f79 | 2016 | spinlock_t client_data_lock; |
1da177e4 | 2017 | struct list_head core_list; |
7c1eb45a HE |
2018 | /* Access to the client_data_list is protected by the client_data_lock |
2019 | * spinlock and the lists_rwsem read-write semaphore */ | |
1da177e4 | 2020 | struct list_head client_data_list; |
1da177e4 LT |
2021 | |
2022 | struct ib_cache cache; | |
7738613e IW |
2023 | /** |
2024 | * port_immutable is indexed by port number | |
2025 | */ | |
2026 | struct ib_port_immutable *port_immutable; | |
1da177e4 | 2027 | |
f4fd0b22 MT |
2028 | int num_comp_vectors; |
2029 | ||
d291f1a6 DJ |
2030 | struct ib_port_pkey_list *port_pkey_list; |
2031 | ||
07ebafba TT |
2032 | struct iw_cm_verbs *iwcm; |
2033 | ||
b40f4757 CL |
2034 | /** |
2035 | * alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the | |
2036 | * driver initialized data. The struct is kfree()'ed by the sysfs | |
2037 | * core when the device is removed. A lifespan of -1 in the return | |
2038 | * struct tells the core to set a default lifespan. | |
2039 | */ | |
2040 | struct rdma_hw_stats *(*alloc_hw_stats)(struct ib_device *device, | |
2041 | u8 port_num); | |
2042 | /** | |
2043 | * get_hw_stats - Fill in the counter value(s) in the stats struct. | |
2044 | * @index - The index in the value array we wish to have updated, or | |
2045 | * num_counters if we want all stats updated | |
2046 | * Return codes - | |
2047 | * < 0 - Error, no counters updated | |
2048 | * index - Updated the single counter pointed to by index | |
2049 | * num_counters - Updated all counters (will reset the timestamp | |
2050 | * and prevent further calls for lifespan milliseconds) | |
2051 | * Drivers are allowed to update all counters in leiu of just the | |
2052 | * one given in index at their option | |
2053 | */ | |
2054 | int (*get_hw_stats)(struct ib_device *device, | |
2055 | struct rdma_hw_stats *stats, | |
2056 | u8 port, int index); | |
1da177e4 | 2057 | int (*query_device)(struct ib_device *device, |
2528e33e MB |
2058 | struct ib_device_attr *device_attr, |
2059 | struct ib_udata *udata); | |
1da177e4 LT |
2060 | int (*query_port)(struct ib_device *device, |
2061 | u8 port_num, | |
2062 | struct ib_port_attr *port_attr); | |
a3f5adaf EC |
2063 | enum rdma_link_layer (*get_link_layer)(struct ib_device *device, |
2064 | u8 port_num); | |
03db3a2d MB |
2065 | /* When calling get_netdev, the HW vendor's driver should return the |
2066 | * net device of device @device at port @port_num or NULL if such | |
2067 | * a net device doesn't exist. The vendor driver should call dev_hold | |
2068 | * on this net device. The HW vendor's device driver must guarantee | |
2069 | * that this function returns NULL before the net device reaches | |
2070 | * NETDEV_UNREGISTER_FINAL state. | |
2071 | */ | |
2072 | struct net_device *(*get_netdev)(struct ib_device *device, | |
2073 | u8 port_num); | |
1da177e4 LT |
2074 | int (*query_gid)(struct ib_device *device, |
2075 | u8 port_num, int index, | |
2076 | union ib_gid *gid); | |
03db3a2d MB |
2077 | /* When calling add_gid, the HW vendor's driver should |
2078 | * add the gid of device @device at gid index @index of | |
2079 | * port @port_num to be @gid. Meta-info of that gid (for example, | |
2080 | * the network device related to this gid is available | |
2081 | * at @attr. @context allows the HW vendor driver to store extra | |
2082 | * information together with a GID entry. The HW vendor may allocate | |
2083 | * memory to contain this information and store it in @context when a | |
2084 | * new GID entry is written to. Params are consistent until the next | |
2085 | * call of add_gid or delete_gid. The function should return 0 on | |
2086 | * success or error otherwise. The function could be called | |
2087 | * concurrently for different ports. This function is only called | |
2088 | * when roce_gid_table is used. | |
2089 | */ | |
2090 | int (*add_gid)(struct ib_device *device, | |
2091 | u8 port_num, | |
2092 | unsigned int index, | |
2093 | const union ib_gid *gid, | |
2094 | const struct ib_gid_attr *attr, | |
2095 | void **context); | |
2096 | /* When calling del_gid, the HW vendor's driver should delete the | |
2097 | * gid of device @device at gid index @index of port @port_num. | |
2098 | * Upon the deletion of a GID entry, the HW vendor must free any | |
2099 | * allocated memory. The caller will clear @context afterwards. | |
2100 | * This function is only called when roce_gid_table is used. | |
2101 | */ | |
2102 | int (*del_gid)(struct ib_device *device, | |
2103 | u8 port_num, | |
2104 | unsigned int index, | |
2105 | void **context); | |
1da177e4 LT |
2106 | int (*query_pkey)(struct ib_device *device, |
2107 | u8 port_num, u16 index, u16 *pkey); | |
2108 | int (*modify_device)(struct ib_device *device, | |
2109 | int device_modify_mask, | |
2110 | struct ib_device_modify *device_modify); | |
2111 | int (*modify_port)(struct ib_device *device, | |
2112 | u8 port_num, int port_modify_mask, | |
2113 | struct ib_port_modify *port_modify); | |
e2773c06 RD |
2114 | struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device, |
2115 | struct ib_udata *udata); | |
2116 | int (*dealloc_ucontext)(struct ib_ucontext *context); | |
2117 | int (*mmap)(struct ib_ucontext *context, | |
2118 | struct vm_area_struct *vma); | |
2119 | struct ib_pd * (*alloc_pd)(struct ib_device *device, | |
2120 | struct ib_ucontext *context, | |
2121 | struct ib_udata *udata); | |
1da177e4 LT |
2122 | int (*dealloc_pd)(struct ib_pd *pd); |
2123 | struct ib_ah * (*create_ah)(struct ib_pd *pd, | |
90898850 | 2124 | struct rdma_ah_attr *ah_attr, |
477864c8 | 2125 | struct ib_udata *udata); |
1da177e4 | 2126 | int (*modify_ah)(struct ib_ah *ah, |
90898850 | 2127 | struct rdma_ah_attr *ah_attr); |
1da177e4 | 2128 | int (*query_ah)(struct ib_ah *ah, |
90898850 | 2129 | struct rdma_ah_attr *ah_attr); |
1da177e4 | 2130 | int (*destroy_ah)(struct ib_ah *ah); |
d41fcc67 RD |
2131 | struct ib_srq * (*create_srq)(struct ib_pd *pd, |
2132 | struct ib_srq_init_attr *srq_init_attr, | |
2133 | struct ib_udata *udata); | |
2134 | int (*modify_srq)(struct ib_srq *srq, | |
2135 | struct ib_srq_attr *srq_attr, | |
9bc57e2d RC |
2136 | enum ib_srq_attr_mask srq_attr_mask, |
2137 | struct ib_udata *udata); | |
d41fcc67 RD |
2138 | int (*query_srq)(struct ib_srq *srq, |
2139 | struct ib_srq_attr *srq_attr); | |
2140 | int (*destroy_srq)(struct ib_srq *srq); | |
2141 | int (*post_srq_recv)(struct ib_srq *srq, | |
2142 | struct ib_recv_wr *recv_wr, | |
2143 | struct ib_recv_wr **bad_recv_wr); | |
1da177e4 | 2144 | struct ib_qp * (*create_qp)(struct ib_pd *pd, |
e2773c06 RD |
2145 | struct ib_qp_init_attr *qp_init_attr, |
2146 | struct ib_udata *udata); | |
1da177e4 LT |
2147 | int (*modify_qp)(struct ib_qp *qp, |
2148 | struct ib_qp_attr *qp_attr, | |
9bc57e2d RC |
2149 | int qp_attr_mask, |
2150 | struct ib_udata *udata); | |
1da177e4 LT |
2151 | int (*query_qp)(struct ib_qp *qp, |
2152 | struct ib_qp_attr *qp_attr, | |
2153 | int qp_attr_mask, | |
2154 | struct ib_qp_init_attr *qp_init_attr); | |
2155 | int (*destroy_qp)(struct ib_qp *qp); | |
2156 | int (*post_send)(struct ib_qp *qp, | |
2157 | struct ib_send_wr *send_wr, | |
2158 | struct ib_send_wr **bad_send_wr); | |
2159 | int (*post_recv)(struct ib_qp *qp, | |
2160 | struct ib_recv_wr *recv_wr, | |
2161 | struct ib_recv_wr **bad_recv_wr); | |
bcf4c1ea MB |
2162 | struct ib_cq * (*create_cq)(struct ib_device *device, |
2163 | const struct ib_cq_init_attr *attr, | |
e2773c06 RD |
2164 | struct ib_ucontext *context, |
2165 | struct ib_udata *udata); | |
2dd57162 EC |
2166 | int (*modify_cq)(struct ib_cq *cq, u16 cq_count, |
2167 | u16 cq_period); | |
1da177e4 | 2168 | int (*destroy_cq)(struct ib_cq *cq); |
33b9b3ee RD |
2169 | int (*resize_cq)(struct ib_cq *cq, int cqe, |
2170 | struct ib_udata *udata); | |
1da177e4 LT |
2171 | int (*poll_cq)(struct ib_cq *cq, int num_entries, |
2172 | struct ib_wc *wc); | |
2173 | int (*peek_cq)(struct ib_cq *cq, int wc_cnt); | |
2174 | int (*req_notify_cq)(struct ib_cq *cq, | |
ed23a727 | 2175 | enum ib_cq_notify_flags flags); |
1da177e4 LT |
2176 | int (*req_ncomp_notif)(struct ib_cq *cq, |
2177 | int wc_cnt); | |
2178 | struct ib_mr * (*get_dma_mr)(struct ib_pd *pd, | |
2179 | int mr_access_flags); | |
e2773c06 | 2180 | struct ib_mr * (*reg_user_mr)(struct ib_pd *pd, |
f7c6a7b5 RD |
2181 | u64 start, u64 length, |
2182 | u64 virt_addr, | |
e2773c06 RD |
2183 | int mr_access_flags, |
2184 | struct ib_udata *udata); | |
7e6edb9b MB |
2185 | int (*rereg_user_mr)(struct ib_mr *mr, |
2186 | int flags, | |
2187 | u64 start, u64 length, | |
2188 | u64 virt_addr, | |
2189 | int mr_access_flags, | |
2190 | struct ib_pd *pd, | |
2191 | struct ib_udata *udata); | |
1da177e4 | 2192 | int (*dereg_mr)(struct ib_mr *mr); |
9bee178b SG |
2193 | struct ib_mr * (*alloc_mr)(struct ib_pd *pd, |
2194 | enum ib_mr_type mr_type, | |
2195 | u32 max_num_sg); | |
4c67e2bf SG |
2196 | int (*map_mr_sg)(struct ib_mr *mr, |
2197 | struct scatterlist *sg, | |
ff2ba993 | 2198 | int sg_nents, |
9aa8b321 | 2199 | unsigned int *sg_offset); |
7083e42e | 2200 | struct ib_mw * (*alloc_mw)(struct ib_pd *pd, |
b2a239df MB |
2201 | enum ib_mw_type type, |
2202 | struct ib_udata *udata); | |
1da177e4 LT |
2203 | int (*dealloc_mw)(struct ib_mw *mw); |
2204 | struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd, | |
2205 | int mr_access_flags, | |
2206 | struct ib_fmr_attr *fmr_attr); | |
2207 | int (*map_phys_fmr)(struct ib_fmr *fmr, | |
2208 | u64 *page_list, int list_len, | |
2209 | u64 iova); | |
2210 | int (*unmap_fmr)(struct list_head *fmr_list); | |
2211 | int (*dealloc_fmr)(struct ib_fmr *fmr); | |
2212 | int (*attach_mcast)(struct ib_qp *qp, | |
2213 | union ib_gid *gid, | |
2214 | u16 lid); | |
2215 | int (*detach_mcast)(struct ib_qp *qp, | |
2216 | union ib_gid *gid, | |
2217 | u16 lid); | |
2218 | int (*process_mad)(struct ib_device *device, | |
2219 | int process_mad_flags, | |
2220 | u8 port_num, | |
a97e2d86 IW |
2221 | const struct ib_wc *in_wc, |
2222 | const struct ib_grh *in_grh, | |
4cd7c947 IW |
2223 | const struct ib_mad_hdr *in_mad, |
2224 | size_t in_mad_size, | |
2225 | struct ib_mad_hdr *out_mad, | |
2226 | size_t *out_mad_size, | |
2227 | u16 *out_mad_pkey_index); | |
59991f94 SH |
2228 | struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device, |
2229 | struct ib_ucontext *ucontext, | |
2230 | struct ib_udata *udata); | |
2231 | int (*dealloc_xrcd)(struct ib_xrcd *xrcd); | |
319a441d HHZ |
2232 | struct ib_flow * (*create_flow)(struct ib_qp *qp, |
2233 | struct ib_flow_attr | |
2234 | *flow_attr, | |
2235 | int domain); | |
2236 | int (*destroy_flow)(struct ib_flow *flow_id); | |
1b01d335 SG |
2237 | int (*check_mr_status)(struct ib_mr *mr, u32 check_mask, |
2238 | struct ib_mr_status *mr_status); | |
036b1063 | 2239 | void (*disassociate_ucontext)(struct ib_ucontext *ibcontext); |
765d6774 SW |
2240 | void (*drain_rq)(struct ib_qp *qp); |
2241 | void (*drain_sq)(struct ib_qp *qp); | |
50174a7f EC |
2242 | int (*set_vf_link_state)(struct ib_device *device, int vf, u8 port, |
2243 | int state); | |
2244 | int (*get_vf_config)(struct ib_device *device, int vf, u8 port, | |
2245 | struct ifla_vf_info *ivf); | |
2246 | int (*get_vf_stats)(struct ib_device *device, int vf, u8 port, | |
2247 | struct ifla_vf_stats *stats); | |
2248 | int (*set_vf_guid)(struct ib_device *device, int vf, u8 port, u64 guid, | |
2249 | int type); | |
5fd251c8 YH |
2250 | struct ib_wq * (*create_wq)(struct ib_pd *pd, |
2251 | struct ib_wq_init_attr *init_attr, | |
2252 | struct ib_udata *udata); | |
2253 | int (*destroy_wq)(struct ib_wq *wq); | |
2254 | int (*modify_wq)(struct ib_wq *wq, | |
2255 | struct ib_wq_attr *attr, | |
2256 | u32 wq_attr_mask, | |
2257 | struct ib_udata *udata); | |
6d39786b YH |
2258 | struct ib_rwq_ind_table * (*create_rwq_ind_table)(struct ib_device *device, |
2259 | struct ib_rwq_ind_table_init_attr *init_attr, | |
2260 | struct ib_udata *udata); | |
2261 | int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table); | |
2fc77572 | 2262 | /** |
8e959601 | 2263 | * rdma netdev operation |
2fc77572 VN |
2264 | * |
2265 | * Driver implementing alloc_rdma_netdev must return -EOPNOTSUPP if it | |
2266 | * doesn't support the specified rdma netdev type. | |
2267 | */ | |
2268 | struct net_device *(*alloc_rdma_netdev)( | |
2269 | struct ib_device *device, | |
2270 | u8 port_num, | |
2271 | enum rdma_netdev_t type, | |
2272 | const char *name, | |
2273 | unsigned char name_assign_type, | |
2274 | void (*setup)(struct net_device *)); | |
9b513090 | 2275 | |
e2773c06 | 2276 | struct module *owner; |
f4e91eb4 | 2277 | struct device dev; |
35be0681 | 2278 | struct kobject *ports_parent; |
1da177e4 LT |
2279 | struct list_head port_list; |
2280 | ||
2281 | enum { | |
2282 | IB_DEV_UNINITIALIZED, | |
2283 | IB_DEV_REGISTERED, | |
2284 | IB_DEV_UNREGISTERED | |
2285 | } reg_state; | |
2286 | ||
274c0891 | 2287 | int uverbs_abi_ver; |
17a55f79 | 2288 | u64 uverbs_cmd_mask; |
f21519b2 | 2289 | u64 uverbs_ex_cmd_mask; |
274c0891 | 2290 | |
bd99fdea | 2291 | char node_desc[IB_DEVICE_NODE_DESC_MAX]; |
cf311cd4 | 2292 | __be64 node_guid; |
96f15c03 | 2293 | u32 local_dma_lkey; |
4139032b | 2294 | u16 is_switch:1; |
1da177e4 LT |
2295 | u8 node_type; |
2296 | u8 phys_port_cnt; | |
3e153a93 | 2297 | struct ib_device_attr attrs; |
b40f4757 CL |
2298 | struct attribute_group *hw_stats_ag; |
2299 | struct rdma_hw_stats *hw_stats; | |
7738613e | 2300 | |
43579b5f PP |
2301 | #ifdef CONFIG_CGROUP_RDMA |
2302 | struct rdmacg_device cg_device; | |
2303 | #endif | |
2304 | ||
ecc82c53 LR |
2305 | u32 index; |
2306 | ||
7738613e IW |
2307 | /** |
2308 | * The following mandatory functions are used only at device | |
2309 | * registration. Keep functions such as these at the end of this | |
2310 | * structure to avoid cache line misses when accessing struct ib_device | |
2311 | * in fast paths. | |
2312 | */ | |
2313 | int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *); | |
9abb0d1b | 2314 | void (*get_dev_fw_str)(struct ib_device *, char *str); |
c66cd353 SG |
2315 | const struct cpumask *(*get_vector_affinity)(struct ib_device *ibdev, |
2316 | int comp_vector); | |
1da177e4 LT |
2317 | }; |
2318 | ||
2319 | struct ib_client { | |
2320 | char *name; | |
2321 | void (*add) (struct ib_device *); | |
7c1eb45a | 2322 | void (*remove)(struct ib_device *, void *client_data); |
1da177e4 | 2323 | |
9268f72d YK |
2324 | /* Returns the net_dev belonging to this ib_client and matching the |
2325 | * given parameters. | |
2326 | * @dev: An RDMA device that the net_dev use for communication. | |
2327 | * @port: A physical port number on the RDMA device. | |
2328 | * @pkey: P_Key that the net_dev uses if applicable. | |
2329 | * @gid: A GID that the net_dev uses to communicate. | |
2330 | * @addr: An IP address the net_dev is configured with. | |
2331 | * @client_data: The device's client data set by ib_set_client_data(). | |
2332 | * | |
2333 | * An ib_client that implements a net_dev on top of RDMA devices | |
2334 | * (such as IP over IB) should implement this callback, allowing the | |
2335 | * rdma_cm module to find the right net_dev for a given request. | |
2336 | * | |
2337 | * The caller is responsible for calling dev_put on the returned | |
2338 | * netdev. */ | |
2339 | struct net_device *(*get_net_dev_by_params)( | |
2340 | struct ib_device *dev, | |
2341 | u8 port, | |
2342 | u16 pkey, | |
2343 | const union ib_gid *gid, | |
2344 | const struct sockaddr *addr, | |
2345 | void *client_data); | |
1da177e4 LT |
2346 | struct list_head list; |
2347 | }; | |
2348 | ||
2349 | struct ib_device *ib_alloc_device(size_t size); | |
2350 | void ib_dealloc_device(struct ib_device *device); | |
2351 | ||
9abb0d1b | 2352 | void ib_get_device_fw_str(struct ib_device *device, char *str); |
5fa76c20 | 2353 | |
9a6edb60 RC |
2354 | int ib_register_device(struct ib_device *device, |
2355 | int (*port_callback)(struct ib_device *, | |
2356 | u8, struct kobject *)); | |
1da177e4 LT |
2357 | void ib_unregister_device(struct ib_device *device); |
2358 | ||
2359 | int ib_register_client (struct ib_client *client); | |
2360 | void ib_unregister_client(struct ib_client *client); | |
2361 | ||
2362 | void *ib_get_client_data(struct ib_device *device, struct ib_client *client); | |
2363 | void ib_set_client_data(struct ib_device *device, struct ib_client *client, | |
2364 | void *data); | |
2365 | ||
e2773c06 RD |
2366 | static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len) |
2367 | { | |
2368 | return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0; | |
2369 | } | |
2370 | ||
2371 | static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len) | |
2372 | { | |
43c61165 | 2373 | return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0; |
e2773c06 RD |
2374 | } |
2375 | ||
301a721e MB |
2376 | static inline bool ib_is_udata_cleared(struct ib_udata *udata, |
2377 | size_t offset, | |
2378 | size_t len) | |
2379 | { | |
2380 | const void __user *p = udata->inbuf + offset; | |
92d27ae6 | 2381 | bool ret; |
301a721e MB |
2382 | u8 *buf; |
2383 | ||
2384 | if (len > USHRT_MAX) | |
2385 | return false; | |
2386 | ||
92d27ae6 ME |
2387 | buf = memdup_user(p, len); |
2388 | if (IS_ERR(buf)) | |
301a721e MB |
2389 | return false; |
2390 | ||
301a721e | 2391 | ret = !memchr_inv(buf, 0, len); |
301a721e MB |
2392 | kfree(buf); |
2393 | return ret; | |
2394 | } | |
2395 | ||
8a51866f RD |
2396 | /** |
2397 | * ib_modify_qp_is_ok - Check that the supplied attribute mask | |
2398 | * contains all required attributes and no attributes not allowed for | |
2399 | * the given QP state transition. | |
2400 | * @cur_state: Current QP state | |
2401 | * @next_state: Next QP state | |
2402 | * @type: QP type | |
2403 | * @mask: Mask of supplied QP attributes | |
dd5f03be | 2404 | * @ll : link layer of port |
8a51866f RD |
2405 | * |
2406 | * This function is a helper function that a low-level driver's | |
2407 | * modify_qp method can use to validate the consumer's input. It | |
2408 | * checks that cur_state and next_state are valid QP states, that a | |
2409 | * transition from cur_state to next_state is allowed by the IB spec, | |
2410 | * and that the attribute mask supplied is allowed for the transition. | |
2411 | */ | |
2412 | int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, | |
dd5f03be MB |
2413 | enum ib_qp_type type, enum ib_qp_attr_mask mask, |
2414 | enum rdma_link_layer ll); | |
8a51866f | 2415 | |
1da177e4 LT |
2416 | int ib_register_event_handler (struct ib_event_handler *event_handler); |
2417 | int ib_unregister_event_handler(struct ib_event_handler *event_handler); | |
2418 | void ib_dispatch_event(struct ib_event *event); | |
2419 | ||
1da177e4 LT |
2420 | int ib_query_port(struct ib_device *device, |
2421 | u8 port_num, struct ib_port_attr *port_attr); | |
2422 | ||
a3f5adaf EC |
2423 | enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, |
2424 | u8 port_num); | |
2425 | ||
4139032b HR |
2426 | /** |
2427 | * rdma_cap_ib_switch - Check if the device is IB switch | |
2428 | * @device: Device to check | |
2429 | * | |
2430 | * Device driver is responsible for setting is_switch bit on | |
2431 | * in ib_device structure at init time. | |
2432 | * | |
2433 | * Return: true if the device is IB switch. | |
2434 | */ | |
2435 | static inline bool rdma_cap_ib_switch(const struct ib_device *device) | |
2436 | { | |
2437 | return device->is_switch; | |
2438 | } | |
2439 | ||
0cf18d77 IW |
2440 | /** |
2441 | * rdma_start_port - Return the first valid port number for the device | |
2442 | * specified | |
2443 | * | |
2444 | * @device: Device to be checked | |
2445 | * | |
2446 | * Return start port number | |
2447 | */ | |
2448 | static inline u8 rdma_start_port(const struct ib_device *device) | |
2449 | { | |
4139032b | 2450 | return rdma_cap_ib_switch(device) ? 0 : 1; |
0cf18d77 IW |
2451 | } |
2452 | ||
2453 | /** | |
2454 | * rdma_end_port - Return the last valid port number for the device | |
2455 | * specified | |
2456 | * | |
2457 | * @device: Device to be checked | |
2458 | * | |
2459 | * Return last port number | |
2460 | */ | |
2461 | static inline u8 rdma_end_port(const struct ib_device *device) | |
2462 | { | |
4139032b | 2463 | return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt; |
0cf18d77 IW |
2464 | } |
2465 | ||
24dc831b YS |
2466 | static inline int rdma_is_port_valid(const struct ib_device *device, |
2467 | unsigned int port) | |
2468 | { | |
2469 | return (port >= rdma_start_port(device) && | |
2470 | port <= rdma_end_port(device)); | |
2471 | } | |
2472 | ||
5ede9289 | 2473 | static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num) |
de66be94 | 2474 | { |
f9b22e35 | 2475 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB; |
de66be94 MW |
2476 | } |
2477 | ||
5ede9289 | 2478 | static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num) |
7766a99f MB |
2479 | { |
2480 | return device->port_immutable[port_num].core_cap_flags & | |
2481 | (RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP); | |
2482 | } | |
2483 | ||
2484 | static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, u8 port_num) | |
2485 | { | |
2486 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP; | |
2487 | } | |
2488 | ||
2489 | static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, u8 port_num) | |
de66be94 | 2490 | { |
f9b22e35 | 2491 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE; |
de66be94 MW |
2492 | } |
2493 | ||
5ede9289 | 2494 | static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num) |
de66be94 | 2495 | { |
f9b22e35 | 2496 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP; |
de66be94 MW |
2497 | } |
2498 | ||
5ede9289 | 2499 | static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num) |
de66be94 | 2500 | { |
7766a99f MB |
2501 | return rdma_protocol_ib(device, port_num) || |
2502 | rdma_protocol_roce(device, port_num); | |
de66be94 MW |
2503 | } |
2504 | ||
aa773bd4 OG |
2505 | static inline bool rdma_protocol_raw_packet(const struct ib_device *device, u8 port_num) |
2506 | { | |
2507 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_RAW_PACKET; | |
2508 | } | |
2509 | ||
ce1e055f OG |
2510 | static inline bool rdma_protocol_usnic(const struct ib_device *device, u8 port_num) |
2511 | { | |
2512 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_USNIC; | |
2513 | } | |
2514 | ||
c757dea8 | 2515 | /** |
296ec009 | 2516 | * rdma_cap_ib_mad - Check if the port of a device supports Infiniband |
c757dea8 | 2517 | * Management Datagrams. |
296ec009 MW |
2518 | * @device: Device to check |
2519 | * @port_num: Port number to check | |
c757dea8 | 2520 | * |
296ec009 MW |
2521 | * Management Datagrams (MAD) are a required part of the InfiniBand |
2522 | * specification and are supported on all InfiniBand devices. A slightly | |
2523 | * extended version are also supported on OPA interfaces. | |
c757dea8 | 2524 | * |
296ec009 | 2525 | * Return: true if the port supports sending/receiving of MAD packets. |
c757dea8 | 2526 | */ |
5ede9289 | 2527 | static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num) |
c757dea8 | 2528 | { |
f9b22e35 | 2529 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_MAD; |
c757dea8 MW |
2530 | } |
2531 | ||
65995fee IW |
2532 | /** |
2533 | * rdma_cap_opa_mad - Check if the port of device provides support for OPA | |
2534 | * Management Datagrams. | |
2535 | * @device: Device to check | |
2536 | * @port_num: Port number to check | |
2537 | * | |
2538 | * Intel OmniPath devices extend and/or replace the InfiniBand Management | |
2539 | * datagrams with their own versions. These OPA MADs share many but not all of | |
2540 | * the characteristics of InfiniBand MADs. | |
2541 | * | |
2542 | * OPA MADs differ in the following ways: | |
2543 | * | |
2544 | * 1) MADs are variable size up to 2K | |
2545 | * IBTA defined MADs remain fixed at 256 bytes | |
2546 | * 2) OPA SMPs must carry valid PKeys | |
2547 | * 3) OPA SMP packets are a different format | |
2548 | * | |
2549 | * Return: true if the port supports OPA MAD packet formats. | |
2550 | */ | |
2551 | static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num) | |
2552 | { | |
2553 | return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD) | |
2554 | == RDMA_CORE_CAP_OPA_MAD; | |
2555 | } | |
2556 | ||
29541e3a | 2557 | /** |
296ec009 MW |
2558 | * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband |
2559 | * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI). | |
2560 | * @device: Device to check | |
2561 | * @port_num: Port number to check | |
29541e3a | 2562 | * |
296ec009 MW |
2563 | * Each InfiniBand node is required to provide a Subnet Management Agent |
2564 | * that the subnet manager can access. Prior to the fabric being fully | |
2565 | * configured by the subnet manager, the SMA is accessed via a well known | |
2566 | * interface called the Subnet Management Interface (SMI). This interface | |
2567 | * uses directed route packets to communicate with the SM to get around the | |
2568 | * chicken and egg problem of the SM needing to know what's on the fabric | |
2569 | * in order to configure the fabric, and needing to configure the fabric in | |
2570 | * order to send packets to the devices on the fabric. These directed | |
2571 | * route packets do not need the fabric fully configured in order to reach | |
2572 | * their destination. The SMI is the only method allowed to send | |
2573 | * directed route packets on an InfiniBand fabric. | |
29541e3a | 2574 | * |
296ec009 | 2575 | * Return: true if the port provides an SMI. |
29541e3a | 2576 | */ |
5ede9289 | 2577 | static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num) |
29541e3a | 2578 | { |
f9b22e35 | 2579 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SMI; |
29541e3a MW |
2580 | } |
2581 | ||
72219cea MW |
2582 | /** |
2583 | * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband | |
2584 | * Communication Manager. | |
296ec009 MW |
2585 | * @device: Device to check |
2586 | * @port_num: Port number to check | |
72219cea | 2587 | * |
296ec009 MW |
2588 | * The InfiniBand Communication Manager is one of many pre-defined General |
2589 | * Service Agents (GSA) that are accessed via the General Service | |
2590 | * Interface (GSI). It's role is to facilitate establishment of connections | |
2591 | * between nodes as well as other management related tasks for established | |
2592 | * connections. | |
72219cea | 2593 | * |
296ec009 MW |
2594 | * Return: true if the port supports an IB CM (this does not guarantee that |
2595 | * a CM is actually running however). | |
72219cea | 2596 | */ |
5ede9289 | 2597 | static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num) |
72219cea | 2598 | { |
f9b22e35 | 2599 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_CM; |
72219cea MW |
2600 | } |
2601 | ||
04215330 MW |
2602 | /** |
2603 | * rdma_cap_iw_cm - Check if the port of device has the capability IWARP | |
2604 | * Communication Manager. | |
296ec009 MW |
2605 | * @device: Device to check |
2606 | * @port_num: Port number to check | |
04215330 | 2607 | * |
296ec009 MW |
2608 | * Similar to above, but specific to iWARP connections which have a different |
2609 | * managment protocol than InfiniBand. | |
04215330 | 2610 | * |
296ec009 MW |
2611 | * Return: true if the port supports an iWARP CM (this does not guarantee that |
2612 | * a CM is actually running however). | |
04215330 | 2613 | */ |
5ede9289 | 2614 | static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num) |
04215330 | 2615 | { |
f9b22e35 | 2616 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IW_CM; |
04215330 MW |
2617 | } |
2618 | ||
fe53ba2f MW |
2619 | /** |
2620 | * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband | |
2621 | * Subnet Administration. | |
296ec009 MW |
2622 | * @device: Device to check |
2623 | * @port_num: Port number to check | |
fe53ba2f | 2624 | * |
296ec009 MW |
2625 | * An InfiniBand Subnet Administration (SA) service is a pre-defined General |
2626 | * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand | |
2627 | * fabrics, devices should resolve routes to other hosts by contacting the | |
2628 | * SA to query the proper route. | |
fe53ba2f | 2629 | * |
296ec009 MW |
2630 | * Return: true if the port should act as a client to the fabric Subnet |
2631 | * Administration interface. This does not imply that the SA service is | |
2632 | * running locally. | |
fe53ba2f | 2633 | */ |
5ede9289 | 2634 | static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num) |
fe53ba2f | 2635 | { |
f9b22e35 | 2636 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SA; |
fe53ba2f MW |
2637 | } |
2638 | ||
a31ad3b0 MW |
2639 | /** |
2640 | * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband | |
2641 | * Multicast. | |
296ec009 MW |
2642 | * @device: Device to check |
2643 | * @port_num: Port number to check | |
a31ad3b0 | 2644 | * |
296ec009 MW |
2645 | * InfiniBand multicast registration is more complex than normal IPv4 or |
2646 | * IPv6 multicast registration. Each Host Channel Adapter must register | |
2647 | * with the Subnet Manager when it wishes to join a multicast group. It | |
2648 | * should do so only once regardless of how many queue pairs it subscribes | |
2649 | * to this group. And it should leave the group only after all queue pairs | |
2650 | * attached to the group have been detached. | |
a31ad3b0 | 2651 | * |
296ec009 MW |
2652 | * Return: true if the port must undertake the additional adminstrative |
2653 | * overhead of registering/unregistering with the SM and tracking of the | |
2654 | * total number of queue pairs attached to the multicast group. | |
a31ad3b0 | 2655 | */ |
5ede9289 | 2656 | static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num) |
a31ad3b0 MW |
2657 | { |
2658 | return rdma_cap_ib_sa(device, port_num); | |
2659 | } | |
2660 | ||
30a74ef4 MW |
2661 | /** |
2662 | * rdma_cap_af_ib - Check if the port of device has the capability | |
2663 | * Native Infiniband Address. | |
296ec009 MW |
2664 | * @device: Device to check |
2665 | * @port_num: Port number to check | |
30a74ef4 | 2666 | * |
296ec009 MW |
2667 | * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default |
2668 | * GID. RoCE uses a different mechanism, but still generates a GID via | |
2669 | * a prescribed mechanism and port specific data. | |
30a74ef4 | 2670 | * |
296ec009 MW |
2671 | * Return: true if the port uses a GID address to identify devices on the |
2672 | * network. | |
30a74ef4 | 2673 | */ |
5ede9289 | 2674 | static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num) |
30a74ef4 | 2675 | { |
f9b22e35 | 2676 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_AF_IB; |
30a74ef4 MW |
2677 | } |
2678 | ||
227128fc MW |
2679 | /** |
2680 | * rdma_cap_eth_ah - Check if the port of device has the capability | |
296ec009 MW |
2681 | * Ethernet Address Handle. |
2682 | * @device: Device to check | |
2683 | * @port_num: Port number to check | |
227128fc | 2684 | * |
296ec009 MW |
2685 | * RoCE is InfiniBand over Ethernet, and it uses a well defined technique |
2686 | * to fabricate GIDs over Ethernet/IP specific addresses native to the | |
2687 | * port. Normally, packet headers are generated by the sending host | |
2688 | * adapter, but when sending connectionless datagrams, we must manually | |
2689 | * inject the proper headers for the fabric we are communicating over. | |
227128fc | 2690 | * |
296ec009 MW |
2691 | * Return: true if we are running as a RoCE port and must force the |
2692 | * addition of a Global Route Header built from our Ethernet Address | |
2693 | * Handle into our header list for connectionless packets. | |
227128fc | 2694 | */ |
5ede9289 | 2695 | static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num) |
227128fc | 2696 | { |
f9b22e35 | 2697 | return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_AH; |
227128fc MW |
2698 | } |
2699 | ||
94d595c5 DC |
2700 | /** |
2701 | * rdma_cap_opa_ah - Check if the port of device supports | |
2702 | * OPA Address handles | |
2703 | * @device: Device to check | |
2704 | * @port_num: Port number to check | |
2705 | * | |
2706 | * Return: true if we are running on an OPA device which supports | |
2707 | * the extended OPA addressing. | |
2708 | */ | |
2709 | static inline bool rdma_cap_opa_ah(struct ib_device *device, u8 port_num) | |
2710 | { | |
2711 | return (device->port_immutable[port_num].core_cap_flags & | |
2712 | RDMA_CORE_CAP_OPA_AH) == RDMA_CORE_CAP_OPA_AH; | |
2713 | } | |
2714 | ||
337877a4 IW |
2715 | /** |
2716 | * rdma_max_mad_size - Return the max MAD size required by this RDMA Port. | |
2717 | * | |
2718 | * @device: Device | |
2719 | * @port_num: Port number | |
2720 | * | |
2721 | * This MAD size includes the MAD headers and MAD payload. No other headers | |
2722 | * are included. | |
2723 | * | |
2724 | * Return the max MAD size required by the Port. Will return 0 if the port | |
2725 | * does not support MADs | |
2726 | */ | |
2727 | static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num) | |
2728 | { | |
2729 | return device->port_immutable[port_num].max_mad_size; | |
2730 | } | |
2731 | ||
03db3a2d MB |
2732 | /** |
2733 | * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table | |
2734 | * @device: Device to check | |
2735 | * @port_num: Port number to check | |
2736 | * | |
2737 | * RoCE GID table mechanism manages the various GIDs for a device. | |
2738 | * | |
2739 | * NOTE: if allocating the port's GID table has failed, this call will still | |
2740 | * return true, but any RoCE GID table API will fail. | |
2741 | * | |
2742 | * Return: true if the port uses RoCE GID table mechanism in order to manage | |
2743 | * its GIDs. | |
2744 | */ | |
2745 | static inline bool rdma_cap_roce_gid_table(const struct ib_device *device, | |
2746 | u8 port_num) | |
2747 | { | |
2748 | return rdma_protocol_roce(device, port_num) && | |
2749 | device->add_gid && device->del_gid; | |
2750 | } | |
2751 | ||
002516ed CH |
2752 | /* |
2753 | * Check if the device supports READ W/ INVALIDATE. | |
2754 | */ | |
2755 | static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num) | |
2756 | { | |
2757 | /* | |
2758 | * iWarp drivers must support READ W/ INVALIDATE. No other protocol | |
2759 | * has support for it yet. | |
2760 | */ | |
2761 | return rdma_protocol_iwarp(dev, port_num); | |
2762 | } | |
2763 | ||
1da177e4 | 2764 | int ib_query_gid(struct ib_device *device, |
55ee3ab2 MB |
2765 | u8 port_num, int index, union ib_gid *gid, |
2766 | struct ib_gid_attr *attr); | |
1da177e4 | 2767 | |
50174a7f EC |
2768 | int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port, |
2769 | int state); | |
2770 | int ib_get_vf_config(struct ib_device *device, int vf, u8 port, | |
2771 | struct ifla_vf_info *info); | |
2772 | int ib_get_vf_stats(struct ib_device *device, int vf, u8 port, | |
2773 | struct ifla_vf_stats *stats); | |
2774 | int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, | |
2775 | int type); | |
2776 | ||
1da177e4 LT |
2777 | int ib_query_pkey(struct ib_device *device, |
2778 | u8 port_num, u16 index, u16 *pkey); | |
2779 | ||
2780 | int ib_modify_device(struct ib_device *device, | |
2781 | int device_modify_mask, | |
2782 | struct ib_device_modify *device_modify); | |
2783 | ||
2784 | int ib_modify_port(struct ib_device *device, | |
2785 | u8 port_num, int port_modify_mask, | |
2786 | struct ib_port_modify *port_modify); | |
2787 | ||
5eb620c8 | 2788 | int ib_find_gid(struct ib_device *device, union ib_gid *gid, |
b39ffa1d MB |
2789 | enum ib_gid_type gid_type, struct net_device *ndev, |
2790 | u8 *port_num, u16 *index); | |
5eb620c8 YE |
2791 | |
2792 | int ib_find_pkey(struct ib_device *device, | |
2793 | u8 port_num, u16 pkey, u16 *index); | |
2794 | ||
ed082d36 CH |
2795 | enum ib_pd_flags { |
2796 | /* | |
2797 | * Create a memory registration for all memory in the system and place | |
2798 | * the rkey for it into pd->unsafe_global_rkey. This can be used by | |
2799 | * ULPs to avoid the overhead of dynamic MRs. | |
2800 | * | |
2801 | * This flag is generally considered unsafe and must only be used in | |
2802 | * extremly trusted environments. Every use of it will log a warning | |
2803 | * in the kernel log. | |
2804 | */ | |
2805 | IB_PD_UNSAFE_GLOBAL_RKEY = 0x01, | |
2806 | }; | |
1da177e4 | 2807 | |
ed082d36 CH |
2808 | struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, |
2809 | const char *caller); | |
2810 | #define ib_alloc_pd(device, flags) \ | |
2811 | __ib_alloc_pd((device), (flags), __func__) | |
7dd78647 | 2812 | void ib_dealloc_pd(struct ib_pd *pd); |
1da177e4 LT |
2813 | |
2814 | /** | |
0a18cfe4 | 2815 | * rdma_create_ah - Creates an address handle for the given address vector. |
1da177e4 LT |
2816 | * @pd: The protection domain associated with the address handle. |
2817 | * @ah_attr: The attributes of the address vector. | |
2818 | * | |
2819 | * The address handle is used to reference a local or global destination | |
2820 | * in all UD QP post sends. | |
2821 | */ | |
0a18cfe4 | 2822 | struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr); |
1da177e4 | 2823 | |
850d8fd7 MS |
2824 | /** |
2825 | * ib_get_gids_from_rdma_hdr - Get sgid and dgid from GRH or IPv4 header | |
2826 | * work completion. | |
2827 | * @hdr: the L3 header to parse | |
2828 | * @net_type: type of header to parse | |
2829 | * @sgid: place to store source gid | |
2830 | * @dgid: place to store destination gid | |
2831 | */ | |
2832 | int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, | |
2833 | enum rdma_network_type net_type, | |
2834 | union ib_gid *sgid, union ib_gid *dgid); | |
2835 | ||
2836 | /** | |
2837 | * ib_get_rdma_header_version - Get the header version | |
2838 | * @hdr: the L3 header to parse | |
2839 | */ | |
2840 | int ib_get_rdma_header_version(const union rdma_network_hdr *hdr); | |
2841 | ||
4e00d694 SH |
2842 | /** |
2843 | * ib_init_ah_from_wc - Initializes address handle attributes from a | |
2844 | * work completion. | |
2845 | * @device: Device on which the received message arrived. | |
2846 | * @port_num: Port on which the received message arrived. | |
2847 | * @wc: Work completion associated with the received message. | |
2848 | * @grh: References the received global route header. This parameter is | |
2849 | * ignored unless the work completion indicates that the GRH is valid. | |
2850 | * @ah_attr: Returned attributes that can be used when creating an address | |
2851 | * handle for replying to the message. | |
2852 | */ | |
73cdaaee IW |
2853 | int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, |
2854 | const struct ib_wc *wc, const struct ib_grh *grh, | |
90898850 | 2855 | struct rdma_ah_attr *ah_attr); |
4e00d694 | 2856 | |
513789ed HR |
2857 | /** |
2858 | * ib_create_ah_from_wc - Creates an address handle associated with the | |
2859 | * sender of the specified work completion. | |
2860 | * @pd: The protection domain associated with the address handle. | |
2861 | * @wc: Work completion information associated with a received message. | |
2862 | * @grh: References the received global route header. This parameter is | |
2863 | * ignored unless the work completion indicates that the GRH is valid. | |
2864 | * @port_num: The outbound port number to associate with the address. | |
2865 | * | |
2866 | * The address handle is used to reference a local or global destination | |
2867 | * in all UD QP post sends. | |
2868 | */ | |
73cdaaee IW |
2869 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, |
2870 | const struct ib_grh *grh, u8 port_num); | |
513789ed | 2871 | |
1da177e4 | 2872 | /** |
67b985b6 | 2873 | * rdma_modify_ah - Modifies the address vector associated with an address |
1da177e4 LT |
2874 | * handle. |
2875 | * @ah: The address handle to modify. | |
2876 | * @ah_attr: The new address vector attributes to associate with the | |
2877 | * address handle. | |
2878 | */ | |
67b985b6 | 2879 | int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |
1da177e4 LT |
2880 | |
2881 | /** | |
bfbfd661 | 2882 | * rdma_query_ah - Queries the address vector associated with an address |
1da177e4 LT |
2883 | * handle. |
2884 | * @ah: The address handle to query. | |
2885 | * @ah_attr: The address vector attributes associated with the address | |
2886 | * handle. | |
2887 | */ | |
bfbfd661 | 2888 | int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |
1da177e4 LT |
2889 | |
2890 | /** | |
36523159 | 2891 | * rdma_destroy_ah - Destroys an address handle. |
1da177e4 LT |
2892 | * @ah: The address handle to destroy. |
2893 | */ | |
36523159 | 2894 | int rdma_destroy_ah(struct ib_ah *ah); |
1da177e4 | 2895 | |
d41fcc67 RD |
2896 | /** |
2897 | * ib_create_srq - Creates a SRQ associated with the specified protection | |
2898 | * domain. | |
2899 | * @pd: The protection domain associated with the SRQ. | |
abb6e9ba DB |
2900 | * @srq_init_attr: A list of initial attributes required to create the |
2901 | * SRQ. If SRQ creation succeeds, then the attributes are updated to | |
2902 | * the actual capabilities of the created SRQ. | |
d41fcc67 RD |
2903 | * |
2904 | * srq_attr->max_wr and srq_attr->max_sge are read the determine the | |
2905 | * requested size of the SRQ, and set to the actual values allocated | |
2906 | * on return. If ib_create_srq() succeeds, then max_wr and max_sge | |
2907 | * will always be at least as large as the requested values. | |
2908 | */ | |
2909 | struct ib_srq *ib_create_srq(struct ib_pd *pd, | |
2910 | struct ib_srq_init_attr *srq_init_attr); | |
2911 | ||
2912 | /** | |
2913 | * ib_modify_srq - Modifies the attributes for the specified SRQ. | |
2914 | * @srq: The SRQ to modify. | |
2915 | * @srq_attr: On input, specifies the SRQ attributes to modify. On output, | |
2916 | * the current values of selected SRQ attributes are returned. | |
2917 | * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ | |
2918 | * are being modified. | |
2919 | * | |
2920 | * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or | |
2921 | * IB_SRQ_LIMIT to set the SRQ's limit and request notification when | |
2922 | * the number of receives queued drops below the limit. | |
2923 | */ | |
2924 | int ib_modify_srq(struct ib_srq *srq, | |
2925 | struct ib_srq_attr *srq_attr, | |
2926 | enum ib_srq_attr_mask srq_attr_mask); | |
2927 | ||
2928 | /** | |
2929 | * ib_query_srq - Returns the attribute list and current values for the | |
2930 | * specified SRQ. | |
2931 | * @srq: The SRQ to query. | |
2932 | * @srq_attr: The attributes of the specified SRQ. | |
2933 | */ | |
2934 | int ib_query_srq(struct ib_srq *srq, | |
2935 | struct ib_srq_attr *srq_attr); | |
2936 | ||
2937 | /** | |
2938 | * ib_destroy_srq - Destroys the specified SRQ. | |
2939 | * @srq: The SRQ to destroy. | |
2940 | */ | |
2941 | int ib_destroy_srq(struct ib_srq *srq); | |
2942 | ||
2943 | /** | |
2944 | * ib_post_srq_recv - Posts a list of work requests to the specified SRQ. | |
2945 | * @srq: The SRQ to post the work request on. | |
2946 | * @recv_wr: A list of work requests to post on the receive queue. | |
2947 | * @bad_recv_wr: On an immediate failure, this parameter will reference | |
2948 | * the work request that failed to be posted on the QP. | |
2949 | */ | |
2950 | static inline int ib_post_srq_recv(struct ib_srq *srq, | |
2951 | struct ib_recv_wr *recv_wr, | |
2952 | struct ib_recv_wr **bad_recv_wr) | |
2953 | { | |
2954 | return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr); | |
2955 | } | |
2956 | ||
1da177e4 LT |
2957 | /** |
2958 | * ib_create_qp - Creates a QP associated with the specified protection | |
2959 | * domain. | |
2960 | * @pd: The protection domain associated with the QP. | |
abb6e9ba DB |
2961 | * @qp_init_attr: A list of initial attributes required to create the |
2962 | * QP. If QP creation succeeds, then the attributes are updated to | |
2963 | * the actual capabilities of the created QP. | |
1da177e4 LT |
2964 | */ |
2965 | struct ib_qp *ib_create_qp(struct ib_pd *pd, | |
2966 | struct ib_qp_init_attr *qp_init_attr); | |
2967 | ||
a512c2fb PP |
2968 | /** |
2969 | * ib_modify_qp_with_udata - Modifies the attributes for the specified QP. | |
2970 | * @qp: The QP to modify. | |
2971 | * @attr: On input, specifies the QP attributes to modify. On output, | |
2972 | * the current values of selected QP attributes are returned. | |
2973 | * @attr_mask: A bit-mask used to specify which attributes of the QP | |
2974 | * are being modified. | |
2975 | * @udata: pointer to user's input output buffer information | |
2976 | * are being modified. | |
2977 | * It returns 0 on success and returns appropriate error code on error. | |
2978 | */ | |
2979 | int ib_modify_qp_with_udata(struct ib_qp *qp, | |
2980 | struct ib_qp_attr *attr, | |
2981 | int attr_mask, | |
2982 | struct ib_udata *udata); | |
2983 | ||
1da177e4 LT |
2984 | /** |
2985 | * ib_modify_qp - Modifies the attributes for the specified QP and then | |
2986 | * transitions the QP to the given state. | |
2987 | * @qp: The QP to modify. | |
2988 | * @qp_attr: On input, specifies the QP attributes to modify. On output, | |
2989 | * the current values of selected QP attributes are returned. | |
2990 | * @qp_attr_mask: A bit-mask used to specify which attributes of the QP | |
2991 | * are being modified. | |
2992 | */ | |
2993 | int ib_modify_qp(struct ib_qp *qp, | |
2994 | struct ib_qp_attr *qp_attr, | |
2995 | int qp_attr_mask); | |
2996 | ||
2997 | /** | |
2998 | * ib_query_qp - Returns the attribute list and current values for the | |
2999 | * specified QP. | |
3000 | * @qp: The QP to query. | |
3001 | * @qp_attr: The attributes of the specified QP. | |
3002 | * @qp_attr_mask: A bit-mask used to select specific attributes to query. | |
3003 | * @qp_init_attr: Additional attributes of the selected QP. | |
3004 | * | |
3005 | * The qp_attr_mask may be used to limit the query to gathering only the | |
3006 | * selected attributes. | |
3007 | */ | |
3008 | int ib_query_qp(struct ib_qp *qp, | |
3009 | struct ib_qp_attr *qp_attr, | |
3010 | int qp_attr_mask, | |
3011 | struct ib_qp_init_attr *qp_init_attr); | |
3012 | ||
3013 | /** | |
3014 | * ib_destroy_qp - Destroys the specified QP. | |
3015 | * @qp: The QP to destroy. | |
3016 | */ | |
3017 | int ib_destroy_qp(struct ib_qp *qp); | |
3018 | ||
d3d72d90 | 3019 | /** |
0e0ec7e0 SH |
3020 | * ib_open_qp - Obtain a reference to an existing sharable QP. |
3021 | * @xrcd - XRC domain | |
3022 | * @qp_open_attr: Attributes identifying the QP to open. | |
3023 | * | |
3024 | * Returns a reference to a sharable QP. | |
3025 | */ | |
3026 | struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, | |
3027 | struct ib_qp_open_attr *qp_open_attr); | |
3028 | ||
3029 | /** | |
3030 | * ib_close_qp - Release an external reference to a QP. | |
d3d72d90 SH |
3031 | * @qp: The QP handle to release |
3032 | * | |
0e0ec7e0 SH |
3033 | * The opened QP handle is released by the caller. The underlying |
3034 | * shared QP is not destroyed until all internal references are released. | |
d3d72d90 | 3035 | */ |
0e0ec7e0 | 3036 | int ib_close_qp(struct ib_qp *qp); |
d3d72d90 | 3037 | |
1da177e4 LT |
3038 | /** |
3039 | * ib_post_send - Posts a list of work requests to the send queue of | |
3040 | * the specified QP. | |
3041 | * @qp: The QP to post the work request on. | |
3042 | * @send_wr: A list of work requests to post on the send queue. | |
3043 | * @bad_send_wr: On an immediate failure, this parameter will reference | |
3044 | * the work request that failed to be posted on the QP. | |
55464d46 BVA |
3045 | * |
3046 | * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate | |
3047 | * error is returned, the QP state shall not be affected, | |
3048 | * ib_post_send() will return an immediate error after queueing any | |
3049 | * earlier work requests in the list. | |
1da177e4 LT |
3050 | */ |
3051 | static inline int ib_post_send(struct ib_qp *qp, | |
3052 | struct ib_send_wr *send_wr, | |
3053 | struct ib_send_wr **bad_send_wr) | |
3054 | { | |
3055 | return qp->device->post_send(qp, send_wr, bad_send_wr); | |
3056 | } | |
3057 | ||
3058 | /** | |
3059 | * ib_post_recv - Posts a list of work requests to the receive queue of | |
3060 | * the specified QP. | |
3061 | * @qp: The QP to post the work request on. | |
3062 | * @recv_wr: A list of work requests to post on the receive queue. | |
3063 | * @bad_recv_wr: On an immediate failure, this parameter will reference | |
3064 | * the work request that failed to be posted on the QP. | |
3065 | */ | |
3066 | static inline int ib_post_recv(struct ib_qp *qp, | |
3067 | struct ib_recv_wr *recv_wr, | |
3068 | struct ib_recv_wr **bad_recv_wr) | |
3069 | { | |
3070 | return qp->device->post_recv(qp, recv_wr, bad_recv_wr); | |
3071 | } | |
3072 | ||
14d3a3b2 CH |
3073 | struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private, |
3074 | int nr_cqe, int comp_vector, enum ib_poll_context poll_ctx); | |
3075 | void ib_free_cq(struct ib_cq *cq); | |
3076 | int ib_process_cq_direct(struct ib_cq *cq, int budget); | |
3077 | ||
1da177e4 LT |
3078 | /** |
3079 | * ib_create_cq - Creates a CQ on the specified device. | |
3080 | * @device: The device on which to create the CQ. | |
3081 | * @comp_handler: A user-specified callback that is invoked when a | |
3082 | * completion event occurs on the CQ. | |
3083 | * @event_handler: A user-specified callback that is invoked when an | |
3084 | * asynchronous event not associated with a completion occurs on the CQ. | |
3085 | * @cq_context: Context associated with the CQ returned to the user via | |
3086 | * the associated completion and event handlers. | |
8e37210b | 3087 | * @cq_attr: The attributes the CQ should be created upon. |
1da177e4 LT |
3088 | * |
3089 | * Users can examine the cq structure to determine the actual CQ size. | |
3090 | */ | |
3091 | struct ib_cq *ib_create_cq(struct ib_device *device, | |
3092 | ib_comp_handler comp_handler, | |
3093 | void (*event_handler)(struct ib_event *, void *), | |
8e37210b MB |
3094 | void *cq_context, |
3095 | const struct ib_cq_init_attr *cq_attr); | |
1da177e4 LT |
3096 | |
3097 | /** | |
3098 | * ib_resize_cq - Modifies the capacity of the CQ. | |
3099 | * @cq: The CQ to resize. | |
3100 | * @cqe: The minimum size of the CQ. | |
3101 | * | |
3102 | * Users can examine the cq structure to determine the actual CQ size. | |
3103 | */ | |
3104 | int ib_resize_cq(struct ib_cq *cq, int cqe); | |
3105 | ||
2dd57162 EC |
3106 | /** |
3107 | * ib_modify_cq - Modifies moderation params of the CQ | |
3108 | * @cq: The CQ to modify. | |
3109 | * @cq_count: number of CQEs that will trigger an event | |
3110 | * @cq_period: max period of time in usec before triggering an event | |
3111 | * | |
3112 | */ | |
3113 | int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period); | |
3114 | ||
1da177e4 LT |
3115 | /** |
3116 | * ib_destroy_cq - Destroys the specified CQ. | |
3117 | * @cq: The CQ to destroy. | |
3118 | */ | |
3119 | int ib_destroy_cq(struct ib_cq *cq); | |
3120 | ||
3121 | /** | |
3122 | * ib_poll_cq - poll a CQ for completion(s) | |
3123 | * @cq:the CQ being polled | |
3124 | * @num_entries:maximum number of completions to return | |
3125 | * @wc:array of at least @num_entries &struct ib_wc where completions | |
3126 | * will be returned | |
3127 | * | |
3128 | * Poll a CQ for (possibly multiple) completions. If the return value | |
3129 | * is < 0, an error occurred. If the return value is >= 0, it is the | |
3130 | * number of completions returned. If the return value is | |
3131 | * non-negative and < num_entries, then the CQ was emptied. | |
3132 | */ | |
3133 | static inline int ib_poll_cq(struct ib_cq *cq, int num_entries, | |
3134 | struct ib_wc *wc) | |
3135 | { | |
3136 | return cq->device->poll_cq(cq, num_entries, wc); | |
3137 | } | |
3138 | ||
3139 | /** | |
3140 | * ib_peek_cq - Returns the number of unreaped completions currently | |
3141 | * on the specified CQ. | |
3142 | * @cq: The CQ to peek. | |
3143 | * @wc_cnt: A minimum number of unreaped completions to check for. | |
3144 | * | |
3145 | * If the number of unreaped completions is greater than or equal to wc_cnt, | |
3146 | * this function returns wc_cnt, otherwise, it returns the actual number of | |
3147 | * unreaped completions. | |
3148 | */ | |
3149 | int ib_peek_cq(struct ib_cq *cq, int wc_cnt); | |
3150 | ||
3151 | /** | |
3152 | * ib_req_notify_cq - Request completion notification on a CQ. | |
3153 | * @cq: The CQ to generate an event for. | |
ed23a727 RD |
3154 | * @flags: |
3155 | * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP | |
3156 | * to request an event on the next solicited event or next work | |
3157 | * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS | |
3158 | * may also be |ed in to request a hint about missed events, as | |
3159 | * described below. | |
3160 | * | |
3161 | * Return Value: | |
3162 | * < 0 means an error occurred while requesting notification | |
3163 | * == 0 means notification was requested successfully, and if | |
3164 | * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events | |
3165 | * were missed and it is safe to wait for another event. In | |
3166 | * this case is it guaranteed that any work completions added | |
3167 | * to the CQ since the last CQ poll will trigger a completion | |
3168 | * notification event. | |
3169 | * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed | |
3170 | * in. It means that the consumer must poll the CQ again to | |
3171 | * make sure it is empty to avoid missing an event because of a | |
3172 | * race between requesting notification and an entry being | |
3173 | * added to the CQ. This return value means it is possible | |
3174 | * (but not guaranteed) that a work completion has been added | |
3175 | * to the CQ since the last poll without triggering a | |
3176 | * completion notification event. | |
1da177e4 LT |
3177 | */ |
3178 | static inline int ib_req_notify_cq(struct ib_cq *cq, | |
ed23a727 | 3179 | enum ib_cq_notify_flags flags) |
1da177e4 | 3180 | { |
ed23a727 | 3181 | return cq->device->req_notify_cq(cq, flags); |
1da177e4 LT |
3182 | } |
3183 | ||
3184 | /** | |
3185 | * ib_req_ncomp_notif - Request completion notification when there are | |
3186 | * at least the specified number of unreaped completions on the CQ. | |
3187 | * @cq: The CQ to generate an event for. | |
3188 | * @wc_cnt: The number of unreaped completions that should be on the | |
3189 | * CQ before an event is generated. | |
3190 | */ | |
3191 | static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt) | |
3192 | { | |
3193 | return cq->device->req_ncomp_notif ? | |
3194 | cq->device->req_ncomp_notif(cq, wc_cnt) : | |
3195 | -ENOSYS; | |
3196 | } | |
3197 | ||
9b513090 RC |
3198 | /** |
3199 | * ib_dma_mapping_error - check a DMA addr for error | |
3200 | * @dev: The device for which the dma_addr was created | |
3201 | * @dma_addr: The DMA address to check | |
3202 | */ | |
3203 | static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr) | |
3204 | { | |
0957c29f | 3205 | return dma_mapping_error(dev->dma_device, dma_addr); |
9b513090 RC |
3206 | } |
3207 | ||
3208 | /** | |
3209 | * ib_dma_map_single - Map a kernel virtual address to DMA address | |
3210 | * @dev: The device for which the dma_addr is to be created | |
3211 | * @cpu_addr: The kernel virtual address | |
3212 | * @size: The size of the region in bytes | |
3213 | * @direction: The direction of the DMA | |
3214 | */ | |
3215 | static inline u64 ib_dma_map_single(struct ib_device *dev, | |
3216 | void *cpu_addr, size_t size, | |
3217 | enum dma_data_direction direction) | |
3218 | { | |
0957c29f | 3219 | return dma_map_single(dev->dma_device, cpu_addr, size, direction); |
9b513090 RC |
3220 | } |
3221 | ||
3222 | /** | |
3223 | * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single() | |
3224 | * @dev: The device for which the DMA address was created | |
3225 | * @addr: The DMA address | |
3226 | * @size: The size of the region in bytes | |
3227 | * @direction: The direction of the DMA | |
3228 | */ | |
3229 | static inline void ib_dma_unmap_single(struct ib_device *dev, | |
3230 | u64 addr, size_t size, | |
3231 | enum dma_data_direction direction) | |
3232 | { | |
0957c29f | 3233 | dma_unmap_single(dev->dma_device, addr, size, direction); |
cb9fbc5c AK |
3234 | } |
3235 | ||
9b513090 RC |
3236 | /** |
3237 | * ib_dma_map_page - Map a physical page to DMA address | |
3238 | * @dev: The device for which the dma_addr is to be created | |
3239 | * @page: The page to be mapped | |
3240 | * @offset: The offset within the page | |
3241 | * @size: The size of the region in bytes | |
3242 | * @direction: The direction of the DMA | |
3243 | */ | |
3244 | static inline u64 ib_dma_map_page(struct ib_device *dev, | |
3245 | struct page *page, | |
3246 | unsigned long offset, | |
3247 | size_t size, | |
3248 | enum dma_data_direction direction) | |
3249 | { | |
0957c29f | 3250 | return dma_map_page(dev->dma_device, page, offset, size, direction); |
9b513090 RC |
3251 | } |
3252 | ||
3253 | /** | |
3254 | * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page() | |
3255 | * @dev: The device for which the DMA address was created | |
3256 | * @addr: The DMA address | |
3257 | * @size: The size of the region in bytes | |
3258 | * @direction: The direction of the DMA | |
3259 | */ | |
3260 | static inline void ib_dma_unmap_page(struct ib_device *dev, | |
3261 | u64 addr, size_t size, | |
3262 | enum dma_data_direction direction) | |
3263 | { | |
0957c29f | 3264 | dma_unmap_page(dev->dma_device, addr, size, direction); |
9b513090 RC |
3265 | } |
3266 | ||
3267 | /** | |
3268 | * ib_dma_map_sg - Map a scatter/gather list to DMA addresses | |
3269 | * @dev: The device for which the DMA addresses are to be created | |
3270 | * @sg: The array of scatter/gather entries | |
3271 | * @nents: The number of scatter/gather entries | |
3272 | * @direction: The direction of the DMA | |
3273 | */ | |
3274 | static inline int ib_dma_map_sg(struct ib_device *dev, | |
3275 | struct scatterlist *sg, int nents, | |
3276 | enum dma_data_direction direction) | |
3277 | { | |
0957c29f | 3278 | return dma_map_sg(dev->dma_device, sg, nents, direction); |
9b513090 RC |
3279 | } |
3280 | ||
3281 | /** | |
3282 | * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses | |
3283 | * @dev: The device for which the DMA addresses were created | |
3284 | * @sg: The array of scatter/gather entries | |
3285 | * @nents: The number of scatter/gather entries | |
3286 | * @direction: The direction of the DMA | |
3287 | */ | |
3288 | static inline void ib_dma_unmap_sg(struct ib_device *dev, | |
3289 | struct scatterlist *sg, int nents, | |
3290 | enum dma_data_direction direction) | |
3291 | { | |
0957c29f | 3292 | dma_unmap_sg(dev->dma_device, sg, nents, direction); |
9b513090 RC |
3293 | } |
3294 | ||
cb9fbc5c AK |
3295 | static inline int ib_dma_map_sg_attrs(struct ib_device *dev, |
3296 | struct scatterlist *sg, int nents, | |
3297 | enum dma_data_direction direction, | |
00085f1e | 3298 | unsigned long dma_attrs) |
cb9fbc5c | 3299 | { |
0957c29f BVA |
3300 | return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, |
3301 | dma_attrs); | |
cb9fbc5c AK |
3302 | } |
3303 | ||
3304 | static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev, | |
3305 | struct scatterlist *sg, int nents, | |
3306 | enum dma_data_direction direction, | |
00085f1e | 3307 | unsigned long dma_attrs) |
cb9fbc5c | 3308 | { |
0957c29f | 3309 | dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, dma_attrs); |
cb9fbc5c | 3310 | } |
9b513090 RC |
3311 | /** |
3312 | * ib_sg_dma_address - Return the DMA address from a scatter/gather entry | |
3313 | * @dev: The device for which the DMA addresses were created | |
3314 | * @sg: The scatter/gather entry | |
ea58a595 MM |
3315 | * |
3316 | * Note: this function is obsolete. To do: change all occurrences of | |
3317 | * ib_sg_dma_address() into sg_dma_address(). | |
9b513090 RC |
3318 | */ |
3319 | static inline u64 ib_sg_dma_address(struct ib_device *dev, | |
3320 | struct scatterlist *sg) | |
3321 | { | |
d1998ef3 | 3322 | return sg_dma_address(sg); |
9b513090 RC |
3323 | } |
3324 | ||
3325 | /** | |
3326 | * ib_sg_dma_len - Return the DMA length from a scatter/gather entry | |
3327 | * @dev: The device for which the DMA addresses were created | |
3328 | * @sg: The scatter/gather entry | |
ea58a595 MM |
3329 | * |
3330 | * Note: this function is obsolete. To do: change all occurrences of | |
3331 | * ib_sg_dma_len() into sg_dma_len(). | |
9b513090 RC |
3332 | */ |
3333 | static inline unsigned int ib_sg_dma_len(struct ib_device *dev, | |
3334 | struct scatterlist *sg) | |
3335 | { | |
d1998ef3 | 3336 | return sg_dma_len(sg); |
9b513090 RC |
3337 | } |
3338 | ||
3339 | /** | |
3340 | * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU | |
3341 | * @dev: The device for which the DMA address was created | |
3342 | * @addr: The DMA address | |
3343 | * @size: The size of the region in bytes | |
3344 | * @dir: The direction of the DMA | |
3345 | */ | |
3346 | static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev, | |
3347 | u64 addr, | |
3348 | size_t size, | |
3349 | enum dma_data_direction dir) | |
3350 | { | |
0957c29f | 3351 | dma_sync_single_for_cpu(dev->dma_device, addr, size, dir); |
9b513090 RC |
3352 | } |
3353 | ||
3354 | /** | |
3355 | * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device | |
3356 | * @dev: The device for which the DMA address was created | |
3357 | * @addr: The DMA address | |
3358 | * @size: The size of the region in bytes | |
3359 | * @dir: The direction of the DMA | |
3360 | */ | |
3361 | static inline void ib_dma_sync_single_for_device(struct ib_device *dev, | |
3362 | u64 addr, | |
3363 | size_t size, | |
3364 | enum dma_data_direction dir) | |
3365 | { | |
0957c29f | 3366 | dma_sync_single_for_device(dev->dma_device, addr, size, dir); |
9b513090 RC |
3367 | } |
3368 | ||
3369 | /** | |
3370 | * ib_dma_alloc_coherent - Allocate memory and map it for DMA | |
3371 | * @dev: The device for which the DMA address is requested | |
3372 | * @size: The size of the region to allocate in bytes | |
3373 | * @dma_handle: A pointer for returning the DMA address of the region | |
3374 | * @flag: memory allocator flags | |
3375 | */ | |
3376 | static inline void *ib_dma_alloc_coherent(struct ib_device *dev, | |
3377 | size_t size, | |
d43dbacf | 3378 | dma_addr_t *dma_handle, |
9b513090 RC |
3379 | gfp_t flag) |
3380 | { | |
0957c29f | 3381 | return dma_alloc_coherent(dev->dma_device, size, dma_handle, flag); |
9b513090 RC |
3382 | } |
3383 | ||
3384 | /** | |
3385 | * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent() | |
3386 | * @dev: The device for which the DMA addresses were allocated | |
3387 | * @size: The size of the region | |
3388 | * @cpu_addr: the address returned by ib_dma_alloc_coherent() | |
3389 | * @dma_handle: the DMA address returned by ib_dma_alloc_coherent() | |
3390 | */ | |
3391 | static inline void ib_dma_free_coherent(struct ib_device *dev, | |
3392 | size_t size, void *cpu_addr, | |
d43dbacf | 3393 | dma_addr_t dma_handle) |
9b513090 | 3394 | { |
0957c29f | 3395 | dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle); |
9b513090 RC |
3396 | } |
3397 | ||
1da177e4 LT |
3398 | /** |
3399 | * ib_dereg_mr - Deregisters a memory region and removes it from the | |
3400 | * HCA translation table. | |
3401 | * @mr: The memory region to deregister. | |
7083e42e SM |
3402 | * |
3403 | * This function can fail, if the memory region has memory windows bound to it. | |
1da177e4 LT |
3404 | */ |
3405 | int ib_dereg_mr(struct ib_mr *mr); | |
3406 | ||
9bee178b SG |
3407 | struct ib_mr *ib_alloc_mr(struct ib_pd *pd, |
3408 | enum ib_mr_type mr_type, | |
3409 | u32 max_num_sg); | |
00f7ec36 | 3410 | |
00f7ec36 SW |
3411 | /** |
3412 | * ib_update_fast_reg_key - updates the key portion of the fast_reg MR | |
3413 | * R_Key and L_Key. | |
3414 | * @mr - struct ib_mr pointer to be updated. | |
3415 | * @newkey - new key to be used. | |
3416 | */ | |
3417 | static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey) | |
3418 | { | |
3419 | mr->lkey = (mr->lkey & 0xffffff00) | newkey; | |
3420 | mr->rkey = (mr->rkey & 0xffffff00) | newkey; | |
3421 | } | |
3422 | ||
7083e42e SM |
3423 | /** |
3424 | * ib_inc_rkey - increments the key portion of the given rkey. Can be used | |
3425 | * for calculating a new rkey for type 2 memory windows. | |
3426 | * @rkey - the rkey to increment. | |
3427 | */ | |
3428 | static inline u32 ib_inc_rkey(u32 rkey) | |
3429 | { | |
3430 | const u32 mask = 0x000000ff; | |
3431 | return ((rkey + 1) & mask) | (rkey & ~mask); | |
3432 | } | |
3433 | ||
1da177e4 LT |
3434 | /** |
3435 | * ib_alloc_fmr - Allocates a unmapped fast memory region. | |
3436 | * @pd: The protection domain associated with the unmapped region. | |
3437 | * @mr_access_flags: Specifies the memory access rights. | |
3438 | * @fmr_attr: Attributes of the unmapped region. | |
3439 | * | |
3440 | * A fast memory region must be mapped before it can be used as part of | |
3441 | * a work request. | |
3442 | */ | |
3443 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, | |
3444 | int mr_access_flags, | |
3445 | struct ib_fmr_attr *fmr_attr); | |
3446 | ||
3447 | /** | |
3448 | * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region. | |
3449 | * @fmr: The fast memory region to associate with the pages. | |
3450 | * @page_list: An array of physical pages to map to the fast memory region. | |
3451 | * @list_len: The number of pages in page_list. | |
3452 | * @iova: The I/O virtual address to use with the mapped region. | |
3453 | */ | |
3454 | static inline int ib_map_phys_fmr(struct ib_fmr *fmr, | |
3455 | u64 *page_list, int list_len, | |
3456 | u64 iova) | |
3457 | { | |
3458 | return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova); | |
3459 | } | |
3460 | ||
3461 | /** | |
3462 | * ib_unmap_fmr - Removes the mapping from a list of fast memory regions. | |
3463 | * @fmr_list: A linked list of fast memory regions to unmap. | |
3464 | */ | |
3465 | int ib_unmap_fmr(struct list_head *fmr_list); | |
3466 | ||
3467 | /** | |
3468 | * ib_dealloc_fmr - Deallocates a fast memory region. | |
3469 | * @fmr: The fast memory region to deallocate. | |
3470 | */ | |
3471 | int ib_dealloc_fmr(struct ib_fmr *fmr); | |
3472 | ||
3473 | /** | |
3474 | * ib_attach_mcast - Attaches the specified QP to a multicast group. | |
3475 | * @qp: QP to attach to the multicast group. The QP must be type | |
3476 | * IB_QPT_UD. | |
3477 | * @gid: Multicast group GID. | |
3478 | * @lid: Multicast group LID in host byte order. | |
3479 | * | |
3480 | * In order to send and receive multicast packets, subnet | |
3481 | * administration must have created the multicast group and configured | |
3482 | * the fabric appropriately. The port associated with the specified | |
3483 | * QP must also be a member of the multicast group. | |
3484 | */ | |
3485 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); | |
3486 | ||
3487 | /** | |
3488 | * ib_detach_mcast - Detaches the specified QP from a multicast group. | |
3489 | * @qp: QP to detach from the multicast group. | |
3490 | * @gid: Multicast group GID. | |
3491 | * @lid: Multicast group LID in host byte order. | |
3492 | */ | |
3493 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); | |
3494 | ||
59991f94 SH |
3495 | /** |
3496 | * ib_alloc_xrcd - Allocates an XRC domain. | |
3497 | * @device: The device on which to allocate the XRC domain. | |
3498 | */ | |
3499 | struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device); | |
3500 | ||
3501 | /** | |
3502 | * ib_dealloc_xrcd - Deallocates an XRC domain. | |
3503 | * @xrcd: The XRC domain to deallocate. | |
3504 | */ | |
3505 | int ib_dealloc_xrcd(struct ib_xrcd *xrcd); | |
3506 | ||
319a441d HHZ |
3507 | struct ib_flow *ib_create_flow(struct ib_qp *qp, |
3508 | struct ib_flow_attr *flow_attr, int domain); | |
3509 | int ib_destroy_flow(struct ib_flow *flow_id); | |
3510 | ||
1c636f80 EC |
3511 | static inline int ib_check_mr_access(int flags) |
3512 | { | |
3513 | /* | |
3514 | * Local write permission is required if remote write or | |
3515 | * remote atomic permission is also requested. | |
3516 | */ | |
3517 | if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && | |
3518 | !(flags & IB_ACCESS_LOCAL_WRITE)) | |
3519 | return -EINVAL; | |
3520 | ||
3521 | return 0; | |
3522 | } | |
3523 | ||
1b01d335 SG |
3524 | /** |
3525 | * ib_check_mr_status: lightweight check of MR status. | |
3526 | * This routine may provide status checks on a selected | |
3527 | * ib_mr. first use is for signature status check. | |
3528 | * | |
3529 | * @mr: A memory region. | |
3530 | * @check_mask: Bitmask of which checks to perform from | |
3531 | * ib_mr_status_check enumeration. | |
3532 | * @mr_status: The container of relevant status checks. | |
3533 | * failed checks will be indicated in the status bitmask | |
3534 | * and the relevant info shall be in the error item. | |
3535 | */ | |
3536 | int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, | |
3537 | struct ib_mr_status *mr_status); | |
3538 | ||
9268f72d YK |
3539 | struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port, |
3540 | u16 pkey, const union ib_gid *gid, | |
3541 | const struct sockaddr *addr); | |
5fd251c8 YH |
3542 | struct ib_wq *ib_create_wq(struct ib_pd *pd, |
3543 | struct ib_wq_init_attr *init_attr); | |
3544 | int ib_destroy_wq(struct ib_wq *wq); | |
3545 | int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *attr, | |
3546 | u32 wq_attr_mask); | |
6d39786b YH |
3547 | struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device, |
3548 | struct ib_rwq_ind_table_init_attr* | |
3549 | wq_ind_table_init_attr); | |
3550 | int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table); | |
9268f72d | 3551 | |
ff2ba993 | 3552 | int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, |
9aa8b321 | 3553 | unsigned int *sg_offset, unsigned int page_size); |
4c67e2bf SG |
3554 | |
3555 | static inline int | |
ff2ba993 | 3556 | ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, |
9aa8b321 | 3557 | unsigned int *sg_offset, unsigned int page_size) |
4c67e2bf SG |
3558 | { |
3559 | int n; | |
3560 | ||
ff2ba993 | 3561 | n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size); |
4c67e2bf SG |
3562 | mr->iova = 0; |
3563 | ||
3564 | return n; | |
3565 | } | |
3566 | ||
ff2ba993 | 3567 | int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, |
9aa8b321 | 3568 | unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64)); |
4c67e2bf | 3569 | |
765d6774 SW |
3570 | void ib_drain_rq(struct ib_qp *qp); |
3571 | void ib_drain_sq(struct ib_qp *qp); | |
3572 | void ib_drain_qp(struct ib_qp *qp); | |
850d8fd7 | 3573 | |
c90ea9d8 | 3574 | int ib_resolve_eth_dmac(struct ib_device *device, |
90898850 | 3575 | struct rdma_ah_attr *ah_attr); |
d4186194 | 3576 | int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u8 *speed, u8 *width); |
2224c47a DC |
3577 | |
3578 | static inline u8 *rdma_ah_retrieve_dmac(struct rdma_ah_attr *attr) | |
3579 | { | |
44c58487 DC |
3580 | if (attr->type == RDMA_AH_ATTR_TYPE_ROCE) |
3581 | return attr->roce.dmac; | |
3582 | return NULL; | |
2224c47a DC |
3583 | } |
3584 | ||
64b4646e | 3585 | static inline void rdma_ah_set_dlid(struct rdma_ah_attr *attr, u32 dlid) |
2224c47a | 3586 | { |
44c58487 | 3587 | if (attr->type == RDMA_AH_ATTR_TYPE_IB) |
64b4646e DC |
3588 | attr->ib.dlid = (u16)dlid; |
3589 | else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) | |
3590 | attr->opa.dlid = dlid; | |
2224c47a DC |
3591 | } |
3592 | ||
64b4646e | 3593 | static inline u32 rdma_ah_get_dlid(const struct rdma_ah_attr *attr) |
2224c47a | 3594 | { |
44c58487 DC |
3595 | if (attr->type == RDMA_AH_ATTR_TYPE_IB) |
3596 | return attr->ib.dlid; | |
64b4646e DC |
3597 | else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
3598 | return attr->opa.dlid; | |
44c58487 | 3599 | return 0; |
2224c47a DC |
3600 | } |
3601 | ||
3602 | static inline void rdma_ah_set_sl(struct rdma_ah_attr *attr, u8 sl) | |
3603 | { | |
3604 | attr->sl = sl; | |
3605 | } | |
3606 | ||
3607 | static inline u8 rdma_ah_get_sl(const struct rdma_ah_attr *attr) | |
3608 | { | |
3609 | return attr->sl; | |
3610 | } | |
3611 | ||
3612 | static inline void rdma_ah_set_path_bits(struct rdma_ah_attr *attr, | |
3613 | u8 src_path_bits) | |
3614 | { | |
44c58487 DC |
3615 | if (attr->type == RDMA_AH_ATTR_TYPE_IB) |
3616 | attr->ib.src_path_bits = src_path_bits; | |
64b4646e DC |
3617 | else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
3618 | attr->opa.src_path_bits = src_path_bits; | |
2224c47a DC |
3619 | } |
3620 | ||
3621 | static inline u8 rdma_ah_get_path_bits(const struct rdma_ah_attr *attr) | |
3622 | { | |
44c58487 DC |
3623 | if (attr->type == RDMA_AH_ATTR_TYPE_IB) |
3624 | return attr->ib.src_path_bits; | |
64b4646e DC |
3625 | else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
3626 | return attr->opa.src_path_bits; | |
44c58487 | 3627 | return 0; |
2224c47a DC |
3628 | } |
3629 | ||
d98bb7f7 DH |
3630 | static inline void rdma_ah_set_make_grd(struct rdma_ah_attr *attr, |
3631 | bool make_grd) | |
3632 | { | |
3633 | if (attr->type == RDMA_AH_ATTR_TYPE_OPA) | |
3634 | attr->opa.make_grd = make_grd; | |
3635 | } | |
3636 | ||
3637 | static inline bool rdma_ah_get_make_grd(const struct rdma_ah_attr *attr) | |
3638 | { | |
3639 | if (attr->type == RDMA_AH_ATTR_TYPE_OPA) | |
3640 | return attr->opa.make_grd; | |
3641 | return false; | |
3642 | } | |
3643 | ||
2224c47a DC |
3644 | static inline void rdma_ah_set_port_num(struct rdma_ah_attr *attr, u8 port_num) |
3645 | { | |
3646 | attr->port_num = port_num; | |
3647 | } | |
3648 | ||
3649 | static inline u8 rdma_ah_get_port_num(const struct rdma_ah_attr *attr) | |
3650 | { | |
3651 | return attr->port_num; | |
3652 | } | |
3653 | ||
3654 | static inline void rdma_ah_set_static_rate(struct rdma_ah_attr *attr, | |
3655 | u8 static_rate) | |
3656 | { | |
3657 | attr->static_rate = static_rate; | |
3658 | } | |
3659 | ||
3660 | static inline u8 rdma_ah_get_static_rate(const struct rdma_ah_attr *attr) | |
3661 | { | |
3662 | return attr->static_rate; | |
3663 | } | |
3664 | ||
3665 | static inline void rdma_ah_set_ah_flags(struct rdma_ah_attr *attr, | |
3666 | enum ib_ah_flags flag) | |
3667 | { | |
3668 | attr->ah_flags = flag; | |
3669 | } | |
3670 | ||
3671 | static inline enum ib_ah_flags | |
3672 | rdma_ah_get_ah_flags(const struct rdma_ah_attr *attr) | |
3673 | { | |
3674 | return attr->ah_flags; | |
3675 | } | |
3676 | ||
3677 | static inline const struct ib_global_route | |
3678 | *rdma_ah_read_grh(const struct rdma_ah_attr *attr) | |
3679 | { | |
3680 | return &attr->grh; | |
3681 | } | |
3682 | ||
3683 | /*To retrieve and modify the grh */ | |
3684 | static inline struct ib_global_route | |
3685 | *rdma_ah_retrieve_grh(struct rdma_ah_attr *attr) | |
3686 | { | |
3687 | return &attr->grh; | |
3688 | } | |
3689 | ||
3690 | static inline void rdma_ah_set_dgid_raw(struct rdma_ah_attr *attr, void *dgid) | |
3691 | { | |
3692 | struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); | |
3693 | ||
3694 | memcpy(grh->dgid.raw, dgid, sizeof(grh->dgid)); | |
3695 | } | |
3696 | ||
3697 | static inline void rdma_ah_set_subnet_prefix(struct rdma_ah_attr *attr, | |
3698 | __be64 prefix) | |
3699 | { | |
3700 | struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); | |
3701 | ||
3702 | grh->dgid.global.subnet_prefix = prefix; | |
3703 | } | |
3704 | ||
3705 | static inline void rdma_ah_set_interface_id(struct rdma_ah_attr *attr, | |
3706 | __be64 if_id) | |
3707 | { | |
3708 | struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); | |
3709 | ||
3710 | grh->dgid.global.interface_id = if_id; | |
3711 | } | |
3712 | ||
3713 | static inline void rdma_ah_set_grh(struct rdma_ah_attr *attr, | |
3714 | union ib_gid *dgid, u32 flow_label, | |
3715 | u8 sgid_index, u8 hop_limit, | |
3716 | u8 traffic_class) | |
3717 | { | |
3718 | struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); | |
3719 | ||
3720 | attr->ah_flags = IB_AH_GRH; | |
3721 | if (dgid) | |
3722 | grh->dgid = *dgid; | |
3723 | grh->flow_label = flow_label; | |
3724 | grh->sgid_index = sgid_index; | |
3725 | grh->hop_limit = hop_limit; | |
3726 | grh->traffic_class = traffic_class; | |
3727 | } | |
44c58487 DC |
3728 | |
3729 | /*Get AH type */ | |
3730 | static inline enum rdma_ah_attr_type rdma_ah_find_type(struct ib_device *dev, | |
3731 | u32 port_num) | |
3732 | { | |
3733 | if ((rdma_protocol_roce(dev, port_num)) || | |
3734 | (rdma_protocol_iwarp(dev, port_num))) | |
3735 | return RDMA_AH_ATTR_TYPE_ROCE; | |
64b4646e DC |
3736 | else if ((rdma_protocol_ib(dev, port_num)) && |
3737 | (rdma_cap_opa_ah(dev, port_num))) | |
3738 | return RDMA_AH_ATTR_TYPE_OPA; | |
44c58487 DC |
3739 | else |
3740 | return RDMA_AH_ATTR_TYPE_IB; | |
3741 | } | |
7db20ecd | 3742 | |
62ede777 HD |
3743 | /** |
3744 | * ib_lid_cpu16 - Return lid in 16bit CPU encoding. | |
3745 | * In the current implementation the only way to get | |
3746 | * get the 32bit lid is from other sources for OPA. | |
3747 | * For IB, lids will always be 16bits so cast the | |
3748 | * value accordingly. | |
3749 | * | |
3750 | * @lid: A 32bit LID | |
3751 | */ | |
3752 | static inline u16 ib_lid_cpu16(u32 lid) | |
7db20ecd | 3753 | { |
62ede777 HD |
3754 | WARN_ON_ONCE(lid & 0xFFFF0000); |
3755 | return (u16)lid; | |
7db20ecd HD |
3756 | } |
3757 | ||
62ede777 HD |
3758 | /** |
3759 | * ib_lid_be16 - Return lid in 16bit BE encoding. | |
3760 | * | |
3761 | * @lid: A 32bit LID | |
3762 | */ | |
3763 | static inline __be16 ib_lid_be16(u32 lid) | |
7db20ecd | 3764 | { |
62ede777 HD |
3765 | WARN_ON_ONCE(lid & 0xFFFF0000); |
3766 | return cpu_to_be16((u16)lid); | |
7db20ecd | 3767 | } |
32043830 | 3768 | |
c66cd353 SG |
3769 | /** |
3770 | * ib_get_vector_affinity - Get the affinity mappings of a given completion | |
3771 | * vector | |
3772 | * @device: the rdma device | |
3773 | * @comp_vector: index of completion vector | |
3774 | * | |
3775 | * Returns NULL on failure, otherwise a corresponding cpu map of the | |
3776 | * completion vector (returns all-cpus map if the device driver doesn't | |
3777 | * implement get_vector_affinity). | |
3778 | */ | |
3779 | static inline const struct cpumask * | |
3780 | ib_get_vector_affinity(struct ib_device *device, int comp_vector) | |
3781 | { | |
3782 | if (comp_vector < 0 || comp_vector >= device->num_comp_vectors || | |
3783 | !device->get_vector_affinity) | |
3784 | return NULL; | |
3785 | ||
3786 | return device->get_vector_affinity(device, comp_vector); | |
3787 | ||
3788 | } | |
3789 | ||
1da177e4 | 3790 | #endif /* IB_VERBS_H */ |