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1/*
2 * Copyright (c) 2017 Mellanox Technologies. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. Neither the names of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * Alternatively, this software may be distributed under the terms of the
17 * GNU General Public License ("GPL") version 2 as published by the Free
18 * Software Foundation.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <linux/module.h>
34#include <linux/pid.h>
35#include <linux/pid_namespace.h>
36#include <linux/mutex.h>
37#include <net/netlink.h>
38#include <rdma/rdma_cm.h>
39#include <rdma/rdma_netlink.h>
40
41#include "core_priv.h"
42#include "cma_priv.h"
43#include "restrack.h"
44#include "uverbs.h"
45
46typedef int (*res_fill_func_t)(struct sk_buff*, bool,
47 struct rdma_restrack_entry*, uint32_t);
48
49/*
50 * Sort array elements by the netlink attribute name
51 */
52static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
53 [RDMA_NLDEV_ATTR_CHARDEV] = { .type = NLA_U64 },
54 [RDMA_NLDEV_ATTR_CHARDEV_ABI] = { .type = NLA_U64 },
55 [RDMA_NLDEV_ATTR_CHARDEV_NAME] = { .type = NLA_NUL_STRING,
56 .len = RDMA_NLDEV_ATTR_EMPTY_STRING },
57 [RDMA_NLDEV_ATTR_CHARDEV_TYPE] = { .type = NLA_NUL_STRING,
58 .len = RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE },
59 [RDMA_NLDEV_ATTR_DEV_DIM] = { .type = NLA_U8 },
60 [RDMA_NLDEV_ATTR_DEV_INDEX] = { .type = NLA_U32 },
61 [RDMA_NLDEV_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING,
62 .len = IB_DEVICE_NAME_MAX },
63 [RDMA_NLDEV_ATTR_DEV_NODE_TYPE] = { .type = NLA_U8 },
64 [RDMA_NLDEV_ATTR_DEV_PROTOCOL] = { .type = NLA_NUL_STRING,
65 .len = RDMA_NLDEV_ATTR_EMPTY_STRING },
66 [RDMA_NLDEV_ATTR_DRIVER] = { .type = NLA_NESTED },
67 [RDMA_NLDEV_ATTR_DRIVER_ENTRY] = { .type = NLA_NESTED },
68 [RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE] = { .type = NLA_U8 },
69 [RDMA_NLDEV_ATTR_DRIVER_STRING] = { .type = NLA_NUL_STRING,
70 .len = RDMA_NLDEV_ATTR_EMPTY_STRING },
71 [RDMA_NLDEV_ATTR_DRIVER_S32] = { .type = NLA_S32 },
72 [RDMA_NLDEV_ATTR_DRIVER_S64] = { .type = NLA_S64 },
73 [RDMA_NLDEV_ATTR_DRIVER_U32] = { .type = NLA_U32 },
74 [RDMA_NLDEV_ATTR_DRIVER_U64] = { .type = NLA_U64 },
75 [RDMA_NLDEV_ATTR_FW_VERSION] = { .type = NLA_NUL_STRING,
76 .len = RDMA_NLDEV_ATTR_EMPTY_STRING },
77 [RDMA_NLDEV_ATTR_LID] = { .type = NLA_U32 },
78 [RDMA_NLDEV_ATTR_LINK_TYPE] = { .type = NLA_NUL_STRING,
79 .len = IFNAMSIZ },
80 [RDMA_NLDEV_ATTR_LMC] = { .type = NLA_U8 },
81 [RDMA_NLDEV_ATTR_NDEV_INDEX] = { .type = NLA_U32 },
82 [RDMA_NLDEV_ATTR_NDEV_NAME] = { .type = NLA_NUL_STRING,
83 .len = IFNAMSIZ },
84 [RDMA_NLDEV_ATTR_NODE_GUID] = { .type = NLA_U64 },
85 [RDMA_NLDEV_ATTR_PORT_INDEX] = { .type = NLA_U32 },
86 [RDMA_NLDEV_ATTR_PORT_PHYS_STATE] = { .type = NLA_U8 },
87 [RDMA_NLDEV_ATTR_PORT_STATE] = { .type = NLA_U8 },
88 [RDMA_NLDEV_ATTR_RES_CM_ID] = { .type = NLA_NESTED },
89 [RDMA_NLDEV_ATTR_RES_CM_IDN] = { .type = NLA_U32 },
90 [RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY] = { .type = NLA_NESTED },
91 [RDMA_NLDEV_ATTR_RES_CQ] = { .type = NLA_NESTED },
92 [RDMA_NLDEV_ATTR_RES_CQE] = { .type = NLA_U32 },
93 [RDMA_NLDEV_ATTR_RES_CQN] = { .type = NLA_U32 },
94 [RDMA_NLDEV_ATTR_RES_CQ_ENTRY] = { .type = NLA_NESTED },
95 [RDMA_NLDEV_ATTR_RES_CTX] = { .type = NLA_NESTED },
96 [RDMA_NLDEV_ATTR_RES_CTXN] = { .type = NLA_U32 },
97 [RDMA_NLDEV_ATTR_RES_CTX_ENTRY] = { .type = NLA_NESTED },
98 [RDMA_NLDEV_ATTR_RES_DST_ADDR] = {
99 .len = sizeof(struct __kernel_sockaddr_storage) },
100 [RDMA_NLDEV_ATTR_RES_IOVA] = { .type = NLA_U64 },
101 [RDMA_NLDEV_ATTR_RES_KERN_NAME] = { .type = NLA_NUL_STRING,
102 .len = RDMA_NLDEV_ATTR_EMPTY_STRING },
103 [RDMA_NLDEV_ATTR_RES_LKEY] = { .type = NLA_U32 },
104 [RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY] = { .type = NLA_U32 },
105 [RDMA_NLDEV_ATTR_RES_LQPN] = { .type = NLA_U32 },
106 [RDMA_NLDEV_ATTR_RES_MR] = { .type = NLA_NESTED },
107 [RDMA_NLDEV_ATTR_RES_MRLEN] = { .type = NLA_U64 },
108 [RDMA_NLDEV_ATTR_RES_MRN] = { .type = NLA_U32 },
109 [RDMA_NLDEV_ATTR_RES_MR_ENTRY] = { .type = NLA_NESTED },
110 [RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE] = { .type = NLA_U8 },
111 [RDMA_NLDEV_ATTR_RES_PD] = { .type = NLA_NESTED },
112 [RDMA_NLDEV_ATTR_RES_PDN] = { .type = NLA_U32 },
113 [RDMA_NLDEV_ATTR_RES_PD_ENTRY] = { .type = NLA_NESTED },
114 [RDMA_NLDEV_ATTR_RES_PID] = { .type = NLA_U32 },
115 [RDMA_NLDEV_ATTR_RES_POLL_CTX] = { .type = NLA_U8 },
116 [RDMA_NLDEV_ATTR_RES_PS] = { .type = NLA_U32 },
117 [RDMA_NLDEV_ATTR_RES_QP] = { .type = NLA_NESTED },
118 [RDMA_NLDEV_ATTR_RES_QP_ENTRY] = { .type = NLA_NESTED },
119 [RDMA_NLDEV_ATTR_RES_RAW] = { .type = NLA_BINARY },
120 [RDMA_NLDEV_ATTR_RES_RKEY] = { .type = NLA_U32 },
121 [RDMA_NLDEV_ATTR_RES_RQPN] = { .type = NLA_U32 },
122 [RDMA_NLDEV_ATTR_RES_RQ_PSN] = { .type = NLA_U32 },
123 [RDMA_NLDEV_ATTR_RES_SQ_PSN] = { .type = NLA_U32 },
124 [RDMA_NLDEV_ATTR_RES_SRC_ADDR] = {
125 .len = sizeof(struct __kernel_sockaddr_storage) },
126 [RDMA_NLDEV_ATTR_RES_STATE] = { .type = NLA_U8 },
127 [RDMA_NLDEV_ATTR_RES_SUMMARY] = { .type = NLA_NESTED },
128 [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY] = { .type = NLA_NESTED },
129 [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]= { .type = NLA_U64 },
130 [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME]= { .type = NLA_NUL_STRING,
131 .len = RDMA_NLDEV_ATTR_EMPTY_STRING },
132 [RDMA_NLDEV_ATTR_RES_TYPE] = { .type = NLA_U8 },
133 [RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]= { .type = NLA_U32 },
134 [RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 },
135 [RDMA_NLDEV_ATTR_RES_SRQ] = { .type = NLA_NESTED },
136 [RDMA_NLDEV_ATTR_RES_SRQN] = { .type = NLA_U32 },
137 [RDMA_NLDEV_ATTR_RES_SRQ_ENTRY] = { .type = NLA_NESTED },
138 [RDMA_NLDEV_ATTR_MIN_RANGE] = { .type = NLA_U32 },
139 [RDMA_NLDEV_ATTR_MAX_RANGE] = { .type = NLA_U32 },
140 [RDMA_NLDEV_ATTR_SM_LID] = { .type = NLA_U32 },
141 [RDMA_NLDEV_ATTR_SUBNET_PREFIX] = { .type = NLA_U64 },
142 [RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK] = { .type = NLA_U32 },
143 [RDMA_NLDEV_ATTR_STAT_MODE] = { .type = NLA_U32 },
144 [RDMA_NLDEV_ATTR_STAT_RES] = { .type = NLA_U32 },
145 [RDMA_NLDEV_ATTR_STAT_COUNTER] = { .type = NLA_NESTED },
146 [RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY] = { .type = NLA_NESTED },
147 [RDMA_NLDEV_ATTR_STAT_COUNTER_ID] = { .type = NLA_U32 },
148 [RDMA_NLDEV_ATTR_STAT_HWCOUNTERS] = { .type = NLA_NESTED },
149 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY] = { .type = NLA_NESTED },
150 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME] = { .type = NLA_NUL_STRING },
151 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE] = { .type = NLA_U64 },
152 [RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = { .type = NLA_U64 },
153 [RDMA_NLDEV_ATTR_UVERBS_DRIVER_ID] = { .type = NLA_U32 },
154 [RDMA_NLDEV_NET_NS_FD] = { .type = NLA_U32 },
155 [RDMA_NLDEV_SYS_ATTR_NETNS_MODE] = { .type = NLA_U8 },
156 [RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK] = { .type = NLA_U8 },
157 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_INDEX] = { .type = NLA_U32 },
158 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC] = { .type = NLA_U8 },
159};
160
161static int put_driver_name_print_type(struct sk_buff *msg, const char *name,
162 enum rdma_nldev_print_type print_type)
163{
164 if (nla_put_string(msg, RDMA_NLDEV_ATTR_DRIVER_STRING, name))
165 return -EMSGSIZE;
166 if (print_type != RDMA_NLDEV_PRINT_TYPE_UNSPEC &&
167 nla_put_u8(msg, RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE, print_type))
168 return -EMSGSIZE;
169
170 return 0;
171}
172
173static int _rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name,
174 enum rdma_nldev_print_type print_type,
175 u32 value)
176{
177 if (put_driver_name_print_type(msg, name, print_type))
178 return -EMSGSIZE;
179 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DRIVER_U32, value))
180 return -EMSGSIZE;
181
182 return 0;
183}
184
185static int _rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name,
186 enum rdma_nldev_print_type print_type,
187 u64 value)
188{
189 if (put_driver_name_print_type(msg, name, print_type))
190 return -EMSGSIZE;
191 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_DRIVER_U64, value,
192 RDMA_NLDEV_ATTR_PAD))
193 return -EMSGSIZE;
194
195 return 0;
196}
197
198int rdma_nl_put_driver_string(struct sk_buff *msg, const char *name,
199 const char *str)
200{
201 if (put_driver_name_print_type(msg, name,
202 RDMA_NLDEV_PRINT_TYPE_UNSPEC))
203 return -EMSGSIZE;
204 if (nla_put_string(msg, RDMA_NLDEV_ATTR_DRIVER_STRING, str))
205 return -EMSGSIZE;
206
207 return 0;
208}
209EXPORT_SYMBOL(rdma_nl_put_driver_string);
210
211int rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, u32 value)
212{
213 return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC,
214 value);
215}
216EXPORT_SYMBOL(rdma_nl_put_driver_u32);
217
218int rdma_nl_put_driver_u32_hex(struct sk_buff *msg, const char *name,
219 u32 value)
220{
221 return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX,
222 value);
223}
224EXPORT_SYMBOL(rdma_nl_put_driver_u32_hex);
225
226int rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, u64 value)
227{
228 return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC,
229 value);
230}
231EXPORT_SYMBOL(rdma_nl_put_driver_u64);
232
233int rdma_nl_put_driver_u64_hex(struct sk_buff *msg, const char *name, u64 value)
234{
235 return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX,
236 value);
237}
238EXPORT_SYMBOL(rdma_nl_put_driver_u64_hex);
239
240static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device)
241{
242 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index))
243 return -EMSGSIZE;
244 if (nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_NAME,
245 dev_name(&device->dev)))
246 return -EMSGSIZE;
247
248 return 0;
249}
250
251static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
252{
253 char fw[IB_FW_VERSION_NAME_MAX];
254 int ret = 0;
255 u32 port;
256
257 if (fill_nldev_handle(msg, device))
258 return -EMSGSIZE;
259
260 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, rdma_end_port(device)))
261 return -EMSGSIZE;
262
263 BUILD_BUG_ON(sizeof(device->attrs.device_cap_flags) != sizeof(u64));
264 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
265 device->attrs.device_cap_flags,
266 RDMA_NLDEV_ATTR_PAD))
267 return -EMSGSIZE;
268
269 ib_get_device_fw_str(device, fw);
270 /* Device without FW has strlen(fw) = 0 */
271 if (strlen(fw) && nla_put_string(msg, RDMA_NLDEV_ATTR_FW_VERSION, fw))
272 return -EMSGSIZE;
273
274 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_NODE_GUID,
275 be64_to_cpu(device->node_guid),
276 RDMA_NLDEV_ATTR_PAD))
277 return -EMSGSIZE;
278 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SYS_IMAGE_GUID,
279 be64_to_cpu(device->attrs.sys_image_guid),
280 RDMA_NLDEV_ATTR_PAD))
281 return -EMSGSIZE;
282 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_NODE_TYPE, device->node_type))
283 return -EMSGSIZE;
284 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, device->use_cq_dim))
285 return -EMSGSIZE;
286
287 /*
288 * Link type is determined on first port and mlx4 device
289 * which can potentially have two different link type for the same
290 * IB device is considered as better to be avoided in the future,
291 */
292 port = rdma_start_port(device);
293 if (rdma_cap_opa_mad(device, port))
294 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "opa");
295 else if (rdma_protocol_ib(device, port))
296 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "ib");
297 else if (rdma_protocol_iwarp(device, port))
298 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "iw");
299 else if (rdma_protocol_roce(device, port))
300 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "roce");
301 else if (rdma_protocol_usnic(device, port))
302 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL,
303 "usnic");
304 return ret;
305}
306
307static int fill_port_info(struct sk_buff *msg,
308 struct ib_device *device, u32 port,
309 const struct net *net)
310{
311 struct net_device *netdev = NULL;
312 struct ib_port_attr attr;
313 int ret;
314 u64 cap_flags = 0;
315
316 if (fill_nldev_handle(msg, device))
317 return -EMSGSIZE;
318
319 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port))
320 return -EMSGSIZE;
321
322 ret = ib_query_port(device, port, &attr);
323 if (ret)
324 return ret;
325
326 if (rdma_protocol_ib(device, port)) {
327 BUILD_BUG_ON((sizeof(attr.port_cap_flags) +
328 sizeof(attr.port_cap_flags2)) > sizeof(u64));
329 cap_flags = attr.port_cap_flags |
330 ((u64)attr.port_cap_flags2 << 32);
331 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
332 cap_flags, RDMA_NLDEV_ATTR_PAD))
333 return -EMSGSIZE;
334 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SUBNET_PREFIX,
335 attr.subnet_prefix, RDMA_NLDEV_ATTR_PAD))
336 return -EMSGSIZE;
337 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_LID, attr.lid))
338 return -EMSGSIZE;
339 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_SM_LID, attr.sm_lid))
340 return -EMSGSIZE;
341 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_LMC, attr.lmc))
342 return -EMSGSIZE;
343 }
344 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_STATE, attr.state))
345 return -EMSGSIZE;
346 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_PHYS_STATE, attr.phys_state))
347 return -EMSGSIZE;
348
349 netdev = ib_device_get_netdev(device, port);
350 if (netdev && net_eq(dev_net(netdev), net)) {
351 ret = nla_put_u32(msg,
352 RDMA_NLDEV_ATTR_NDEV_INDEX, netdev->ifindex);
353 if (ret)
354 goto out;
355 ret = nla_put_string(msg,
356 RDMA_NLDEV_ATTR_NDEV_NAME, netdev->name);
357 }
358
359out:
360 if (netdev)
361 dev_put(netdev);
362 return ret;
363}
364
365static int fill_res_info_entry(struct sk_buff *msg,
366 const char *name, u64 curr)
367{
368 struct nlattr *entry_attr;
369
370 entry_attr = nla_nest_start_noflag(msg,
371 RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY);
372 if (!entry_attr)
373 return -EMSGSIZE;
374
375 if (nla_put_string(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME, name))
376 goto err;
377 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR, curr,
378 RDMA_NLDEV_ATTR_PAD))
379 goto err;
380
381 nla_nest_end(msg, entry_attr);
382 return 0;
383
384err:
385 nla_nest_cancel(msg, entry_attr);
386 return -EMSGSIZE;
387}
388
389static int fill_res_info(struct sk_buff *msg, struct ib_device *device)
390{
391 static const char * const names[RDMA_RESTRACK_MAX] = {
392 [RDMA_RESTRACK_PD] = "pd",
393 [RDMA_RESTRACK_CQ] = "cq",
394 [RDMA_RESTRACK_QP] = "qp",
395 [RDMA_RESTRACK_CM_ID] = "cm_id",
396 [RDMA_RESTRACK_MR] = "mr",
397 [RDMA_RESTRACK_CTX] = "ctx",
398 [RDMA_RESTRACK_SRQ] = "srq",
399 };
400
401 struct nlattr *table_attr;
402 int ret, i, curr;
403
404 if (fill_nldev_handle(msg, device))
405 return -EMSGSIZE;
406
407 table_attr = nla_nest_start_noflag(msg, RDMA_NLDEV_ATTR_RES_SUMMARY);
408 if (!table_attr)
409 return -EMSGSIZE;
410
411 for (i = 0; i < RDMA_RESTRACK_MAX; i++) {
412 if (!names[i])
413 continue;
414 curr = rdma_restrack_count(device, i);
415 ret = fill_res_info_entry(msg, names[i], curr);
416 if (ret)
417 goto err;
418 }
419
420 nla_nest_end(msg, table_attr);
421 return 0;
422
423err:
424 nla_nest_cancel(msg, table_attr);
425 return ret;
426}
427
428static int fill_res_name_pid(struct sk_buff *msg,
429 struct rdma_restrack_entry *res)
430{
431 int err = 0;
432
433 /*
434 * For user resources, user is should read /proc/PID/comm to get the
435 * name of the task file.
436 */
437 if (rdma_is_kernel_res(res)) {
438 err = nla_put_string(msg, RDMA_NLDEV_ATTR_RES_KERN_NAME,
439 res->kern_name);
440 } else {
441 pid_t pid;
442
443 pid = task_pid_vnr(res->task);
444 /*
445 * Task is dead and in zombie state.
446 * There is no need to print PID anymore.
447 */
448 if (pid)
449 /*
450 * This part is racy, task can be killed and PID will
451 * be zero right here but it is ok, next query won't
452 * return PID. We don't promise real-time reflection
453 * of SW objects.
454 */
455 err = nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PID, pid);
456 }
457
458 return err ? -EMSGSIZE : 0;
459}
460
461static int fill_res_qp_entry_query(struct sk_buff *msg,
462 struct rdma_restrack_entry *res,
463 struct ib_device *dev,
464 struct ib_qp *qp)
465{
466 struct ib_qp_init_attr qp_init_attr;
467 struct ib_qp_attr qp_attr;
468 int ret;
469
470 ret = ib_query_qp(qp, &qp_attr, 0, &qp_init_attr);
471 if (ret)
472 return ret;
473
474 if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC) {
475 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQPN,
476 qp_attr.dest_qp_num))
477 goto err;
478 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQ_PSN,
479 qp_attr.rq_psn))
480 goto err;
481 }
482
483 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SQ_PSN, qp_attr.sq_psn))
484 goto err;
485
486 if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC ||
487 qp->qp_type == IB_QPT_XRC_INI || qp->qp_type == IB_QPT_XRC_TGT) {
488 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE,
489 qp_attr.path_mig_state))
490 goto err;
491 }
492 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, qp->qp_type))
493 goto err;
494 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, qp_attr.qp_state))
495 goto err;
496
497 if (dev->ops.fill_res_qp_entry)
498 return dev->ops.fill_res_qp_entry(msg, qp);
499 return 0;
500
501err: return -EMSGSIZE;
502}
503
504static int fill_res_qp_entry(struct sk_buff *msg, bool has_cap_net_admin,
505 struct rdma_restrack_entry *res, uint32_t port)
506{
507 struct ib_qp *qp = container_of(res, struct ib_qp, res);
508 struct ib_device *dev = qp->device;
509 int ret;
510
511 if (port && port != qp->port)
512 return -EAGAIN;
513
514 /* In create_qp() port is not set yet */
515 if (qp->port && nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, qp->port))
516 return -EMSGSIZE;
517
518 ret = nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qp->qp_num);
519 if (ret)
520 return -EMSGSIZE;
521
522 if (!rdma_is_kernel_res(res) &&
523 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, qp->pd->res.id))
524 return -EMSGSIZE;
525
526 ret = fill_res_name_pid(msg, res);
527 if (ret)
528 return -EMSGSIZE;
529
530 return fill_res_qp_entry_query(msg, res, dev, qp);
531}
532
533static int fill_res_qp_raw_entry(struct sk_buff *msg, bool has_cap_net_admin,
534 struct rdma_restrack_entry *res, uint32_t port)
535{
536 struct ib_qp *qp = container_of(res, struct ib_qp, res);
537 struct ib_device *dev = qp->device;
538
539 if (port && port != qp->port)
540 return -EAGAIN;
541 if (!dev->ops.fill_res_qp_entry_raw)
542 return -EINVAL;
543 return dev->ops.fill_res_qp_entry_raw(msg, qp);
544}
545
546static int fill_res_cm_id_entry(struct sk_buff *msg, bool has_cap_net_admin,
547 struct rdma_restrack_entry *res, uint32_t port)
548{
549 struct rdma_id_private *id_priv =
550 container_of(res, struct rdma_id_private, res);
551 struct ib_device *dev = id_priv->id.device;
552 struct rdma_cm_id *cm_id = &id_priv->id;
553
554 if (port && port != cm_id->port_num)
555 return -EAGAIN;
556
557 if (cm_id->port_num &&
558 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, cm_id->port_num))
559 goto err;
560
561 if (id_priv->qp_num) {
562 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, id_priv->qp_num))
563 goto err;
564 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, cm_id->qp_type))
565 goto err;
566 }
567
568 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PS, cm_id->ps))
569 goto err;
570
571 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, id_priv->state))
572 goto err;
573
574 if (cm_id->route.addr.src_addr.ss_family &&
575 nla_put(msg, RDMA_NLDEV_ATTR_RES_SRC_ADDR,
576 sizeof(cm_id->route.addr.src_addr),
577 &cm_id->route.addr.src_addr))
578 goto err;
579 if (cm_id->route.addr.dst_addr.ss_family &&
580 nla_put(msg, RDMA_NLDEV_ATTR_RES_DST_ADDR,
581 sizeof(cm_id->route.addr.dst_addr),
582 &cm_id->route.addr.dst_addr))
583 goto err;
584
585 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CM_IDN, res->id))
586 goto err;
587
588 if (fill_res_name_pid(msg, res))
589 goto err;
590
591 if (dev->ops.fill_res_cm_id_entry)
592 return dev->ops.fill_res_cm_id_entry(msg, cm_id);
593 return 0;
594
595err: return -EMSGSIZE;
596}
597
598static int fill_res_cq_entry(struct sk_buff *msg, bool has_cap_net_admin,
599 struct rdma_restrack_entry *res, uint32_t port)
600{
601 struct ib_cq *cq = container_of(res, struct ib_cq, res);
602 struct ib_device *dev = cq->device;
603
604 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQE, cq->cqe))
605 return -EMSGSIZE;
606 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
607 atomic_read(&cq->usecnt), RDMA_NLDEV_ATTR_PAD))
608 return -EMSGSIZE;
609
610 /* Poll context is only valid for kernel CQs */
611 if (rdma_is_kernel_res(res) &&
612 nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_POLL_CTX, cq->poll_ctx))
613 return -EMSGSIZE;
614
615 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, (cq->dim != NULL)))
616 return -EMSGSIZE;
617
618 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQN, res->id))
619 return -EMSGSIZE;
620 if (!rdma_is_kernel_res(res) &&
621 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN,
622 cq->uobject->uevent.uobject.context->res.id))
623 return -EMSGSIZE;
624
625 if (fill_res_name_pid(msg, res))
626 return -EMSGSIZE;
627
628 return (dev->ops.fill_res_cq_entry) ?
629 dev->ops.fill_res_cq_entry(msg, cq) : 0;
630}
631
632static int fill_res_cq_raw_entry(struct sk_buff *msg, bool has_cap_net_admin,
633 struct rdma_restrack_entry *res, uint32_t port)
634{
635 struct ib_cq *cq = container_of(res, struct ib_cq, res);
636 struct ib_device *dev = cq->device;
637
638 if (!dev->ops.fill_res_cq_entry_raw)
639 return -EINVAL;
640 return dev->ops.fill_res_cq_entry_raw(msg, cq);
641}
642
643static int fill_res_mr_entry(struct sk_buff *msg, bool has_cap_net_admin,
644 struct rdma_restrack_entry *res, uint32_t port)
645{
646 struct ib_mr *mr = container_of(res, struct ib_mr, res);
647 struct ib_device *dev = mr->pd->device;
648
649 if (has_cap_net_admin) {
650 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RKEY, mr->rkey))
651 return -EMSGSIZE;
652 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LKEY, mr->lkey))
653 return -EMSGSIZE;
654 }
655
656 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_MRLEN, mr->length,
657 RDMA_NLDEV_ATTR_PAD))
658 return -EMSGSIZE;
659
660 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id))
661 return -EMSGSIZE;
662
663 if (!rdma_is_kernel_res(res) &&
664 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, mr->pd->res.id))
665 return -EMSGSIZE;
666
667 if (fill_res_name_pid(msg, res))
668 return -EMSGSIZE;
669
670 return (dev->ops.fill_res_mr_entry) ?
671 dev->ops.fill_res_mr_entry(msg, mr) :
672 0;
673}
674
675static int fill_res_mr_raw_entry(struct sk_buff *msg, bool has_cap_net_admin,
676 struct rdma_restrack_entry *res, uint32_t port)
677{
678 struct ib_mr *mr = container_of(res, struct ib_mr, res);
679 struct ib_device *dev = mr->pd->device;
680
681 if (!dev->ops.fill_res_mr_entry_raw)
682 return -EINVAL;
683 return dev->ops.fill_res_mr_entry_raw(msg, mr);
684}
685
686static int fill_res_pd_entry(struct sk_buff *msg, bool has_cap_net_admin,
687 struct rdma_restrack_entry *res, uint32_t port)
688{
689 struct ib_pd *pd = container_of(res, struct ib_pd, res);
690
691 if (has_cap_net_admin) {
692 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY,
693 pd->local_dma_lkey))
694 goto err;
695 if ((pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY) &&
696 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY,
697 pd->unsafe_global_rkey))
698 goto err;
699 }
700 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
701 atomic_read(&pd->usecnt), RDMA_NLDEV_ATTR_PAD))
702 goto err;
703
704 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, res->id))
705 goto err;
706
707 if (!rdma_is_kernel_res(res) &&
708 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN,
709 pd->uobject->context->res.id))
710 goto err;
711
712 return fill_res_name_pid(msg, res);
713
714err: return -EMSGSIZE;
715}
716
717static int fill_res_ctx_entry(struct sk_buff *msg, bool has_cap_net_admin,
718 struct rdma_restrack_entry *res, uint32_t port)
719{
720 struct ib_ucontext *ctx = container_of(res, struct ib_ucontext, res);
721
722 if (rdma_is_kernel_res(res))
723 return 0;
724
725 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN, ctx->res.id))
726 return -EMSGSIZE;
727
728 return fill_res_name_pid(msg, res);
729}
730
731static int fill_res_range_qp_entry(struct sk_buff *msg, uint32_t min_range,
732 uint32_t max_range)
733{
734 struct nlattr *entry_attr;
735
736 if (!min_range)
737 return 0;
738
739 entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY);
740 if (!entry_attr)
741 return -EMSGSIZE;
742
743 if (min_range == max_range) {
744 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, min_range))
745 goto err;
746 } else {
747 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_MIN_RANGE, min_range))
748 goto err;
749 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_MAX_RANGE, max_range))
750 goto err;
751 }
752 nla_nest_end(msg, entry_attr);
753 return 0;
754
755err:
756 nla_nest_cancel(msg, entry_attr);
757 return -EMSGSIZE;
758}
759
760static int fill_res_srq_qps(struct sk_buff *msg, struct ib_srq *srq)
761{
762 uint32_t min_range = 0, prev = 0;
763 struct rdma_restrack_entry *res;
764 struct rdma_restrack_root *rt;
765 struct nlattr *table_attr;
766 struct ib_qp *qp = NULL;
767 unsigned long id = 0;
768
769 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP);
770 if (!table_attr)
771 return -EMSGSIZE;
772
773 rt = &srq->device->res[RDMA_RESTRACK_QP];
774 xa_lock(&rt->xa);
775 xa_for_each(&rt->xa, id, res) {
776 if (!rdma_restrack_get(res))
777 continue;
778
779 qp = container_of(res, struct ib_qp, res);
780 if (!qp->srq || (qp->srq->res.id != srq->res.id)) {
781 rdma_restrack_put(res);
782 continue;
783 }
784
785 if (qp->qp_num < prev)
786 /* qp_num should be ascending */
787 goto err_loop;
788
789 if (min_range == 0) {
790 min_range = qp->qp_num;
791 } else if (qp->qp_num > (prev + 1)) {
792 if (fill_res_range_qp_entry(msg, min_range, prev))
793 goto err_loop;
794
795 min_range = qp->qp_num;
796 }
797 prev = qp->qp_num;
798 rdma_restrack_put(res);
799 }
800
801 xa_unlock(&rt->xa);
802
803 if (fill_res_range_qp_entry(msg, min_range, prev))
804 goto err;
805
806 nla_nest_end(msg, table_attr);
807 return 0;
808
809err_loop:
810 rdma_restrack_put(res);
811 xa_unlock(&rt->xa);
812err:
813 nla_nest_cancel(msg, table_attr);
814 return -EMSGSIZE;
815}
816
817static int fill_res_srq_entry(struct sk_buff *msg, bool has_cap_net_admin,
818 struct rdma_restrack_entry *res, uint32_t port)
819{
820 struct ib_srq *srq = container_of(res, struct ib_srq, res);
821
822 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SRQN, srq->res.id))
823 goto err;
824
825 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, srq->srq_type))
826 goto err;
827
828 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, srq->pd->res.id))
829 goto err;
830
831 if (ib_srq_has_cq(srq->srq_type)) {
832 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQN,
833 srq->ext.cq->res.id))
834 goto err;
835 }
836
837 if (fill_res_srq_qps(msg, srq))
838 goto err;
839
840 return fill_res_name_pid(msg, res);
841
842err:
843 return -EMSGSIZE;
844}
845
846static int fill_stat_counter_mode(struct sk_buff *msg,
847 struct rdma_counter *counter)
848{
849 struct rdma_counter_mode *m = &counter->mode;
850
851 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, m->mode))
852 return -EMSGSIZE;
853
854 if (m->mode == RDMA_COUNTER_MODE_AUTO) {
855 if ((m->mask & RDMA_COUNTER_MASK_QP_TYPE) &&
856 nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, m->param.qp_type))
857 return -EMSGSIZE;
858
859 if ((m->mask & RDMA_COUNTER_MASK_PID) &&
860 fill_res_name_pid(msg, &counter->res))
861 return -EMSGSIZE;
862 }
863
864 return 0;
865}
866
867static int fill_stat_counter_qp_entry(struct sk_buff *msg, u32 qpn)
868{
869 struct nlattr *entry_attr;
870
871 entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY);
872 if (!entry_attr)
873 return -EMSGSIZE;
874
875 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn))
876 goto err;
877
878 nla_nest_end(msg, entry_attr);
879 return 0;
880
881err:
882 nla_nest_cancel(msg, entry_attr);
883 return -EMSGSIZE;
884}
885
886static int fill_stat_counter_qps(struct sk_buff *msg,
887 struct rdma_counter *counter)
888{
889 struct rdma_restrack_entry *res;
890 struct rdma_restrack_root *rt;
891 struct nlattr *table_attr;
892 struct ib_qp *qp = NULL;
893 unsigned long id = 0;
894 int ret = 0;
895
896 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP);
897 if (!table_attr)
898 return -EMSGSIZE;
899
900 rt = &counter->device->res[RDMA_RESTRACK_QP];
901 xa_lock(&rt->xa);
902 xa_for_each(&rt->xa, id, res) {
903 qp = container_of(res, struct ib_qp, res);
904 if (!qp->counter || (qp->counter->id != counter->id))
905 continue;
906
907 ret = fill_stat_counter_qp_entry(msg, qp->qp_num);
908 if (ret)
909 goto err;
910 }
911
912 xa_unlock(&rt->xa);
913 nla_nest_end(msg, table_attr);
914 return 0;
915
916err:
917 xa_unlock(&rt->xa);
918 nla_nest_cancel(msg, table_attr);
919 return ret;
920}
921
922int rdma_nl_stat_hwcounter_entry(struct sk_buff *msg, const char *name,
923 u64 value)
924{
925 struct nlattr *entry_attr;
926
927 entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY);
928 if (!entry_attr)
929 return -EMSGSIZE;
930
931 if (nla_put_string(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME,
932 name))
933 goto err;
934 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE,
935 value, RDMA_NLDEV_ATTR_PAD))
936 goto err;
937
938 nla_nest_end(msg, entry_attr);
939 return 0;
940
941err:
942 nla_nest_cancel(msg, entry_attr);
943 return -EMSGSIZE;
944}
945EXPORT_SYMBOL(rdma_nl_stat_hwcounter_entry);
946
947static int fill_stat_mr_entry(struct sk_buff *msg, bool has_cap_net_admin,
948 struct rdma_restrack_entry *res, uint32_t port)
949{
950 struct ib_mr *mr = container_of(res, struct ib_mr, res);
951 struct ib_device *dev = mr->pd->device;
952
953 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id))
954 goto err;
955
956 if (dev->ops.fill_stat_mr_entry)
957 return dev->ops.fill_stat_mr_entry(msg, mr);
958 return 0;
959
960err:
961 return -EMSGSIZE;
962}
963
964static int fill_stat_counter_hwcounters(struct sk_buff *msg,
965 struct rdma_counter *counter)
966{
967 struct rdma_hw_stats *st = counter->stats;
968 struct nlattr *table_attr;
969 int i;
970
971 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
972 if (!table_attr)
973 return -EMSGSIZE;
974
975 mutex_lock(&st->lock);
976 for (i = 0; i < st->num_counters; i++) {
977 if (test_bit(i, st->is_disabled))
978 continue;
979 if (rdma_nl_stat_hwcounter_entry(msg, st->descs[i].name,
980 st->value[i]))
981 goto err;
982 }
983 mutex_unlock(&st->lock);
984
985 nla_nest_end(msg, table_attr);
986 return 0;
987
988err:
989 mutex_unlock(&st->lock);
990 nla_nest_cancel(msg, table_attr);
991 return -EMSGSIZE;
992}
993
994static int fill_res_counter_entry(struct sk_buff *msg, bool has_cap_net_admin,
995 struct rdma_restrack_entry *res,
996 uint32_t port)
997{
998 struct rdma_counter *counter =
999 container_of(res, struct rdma_counter, res);
1000
1001 if (port && port != counter->port)
1002 return -EAGAIN;
1003
1004 /* Dump it even query failed */
1005 rdma_counter_query_stats(counter);
1006
1007 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, counter->port) ||
1008 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, counter->id) ||
1009 fill_stat_counter_mode(msg, counter) ||
1010 fill_stat_counter_qps(msg, counter) ||
1011 fill_stat_counter_hwcounters(msg, counter))
1012 return -EMSGSIZE;
1013
1014 return 0;
1015}
1016
1017static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1018 struct netlink_ext_ack *extack)
1019{
1020 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1021 struct ib_device *device;
1022 struct sk_buff *msg;
1023 u32 index;
1024 int err;
1025
1026 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1027 nldev_policy, extack);
1028 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1029 return -EINVAL;
1030
1031 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1032
1033 device = ib_device_get_by_index(sock_net(skb->sk), index);
1034 if (!device)
1035 return -EINVAL;
1036
1037 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1038 if (!msg) {
1039 err = -ENOMEM;
1040 goto err;
1041 }
1042
1043 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1044 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
1045 0, 0);
1046 if (!nlh) {
1047 err = -EMSGSIZE;
1048 goto err_free;
1049 }
1050
1051 err = fill_dev_info(msg, device);
1052 if (err)
1053 goto err_free;
1054
1055 nlmsg_end(msg, nlh);
1056
1057 ib_device_put(device);
1058 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1059
1060err_free:
1061 nlmsg_free(msg);
1062err:
1063 ib_device_put(device);
1064 return err;
1065}
1066
1067static int nldev_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1068 struct netlink_ext_ack *extack)
1069{
1070 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1071 struct ib_device *device;
1072 u32 index;
1073 int err;
1074
1075 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1076 nldev_policy, extack);
1077 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1078 return -EINVAL;
1079
1080 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1081 device = ib_device_get_by_index(sock_net(skb->sk), index);
1082 if (!device)
1083 return -EINVAL;
1084
1085 if (tb[RDMA_NLDEV_ATTR_DEV_NAME]) {
1086 char name[IB_DEVICE_NAME_MAX] = {};
1087
1088 nla_strscpy(name, tb[RDMA_NLDEV_ATTR_DEV_NAME],
1089 IB_DEVICE_NAME_MAX);
1090 if (strlen(name) == 0) {
1091 err = -EINVAL;
1092 goto done;
1093 }
1094 err = ib_device_rename(device, name);
1095 goto done;
1096 }
1097
1098 if (tb[RDMA_NLDEV_NET_NS_FD]) {
1099 u32 ns_fd;
1100
1101 ns_fd = nla_get_u32(tb[RDMA_NLDEV_NET_NS_FD]);
1102 err = ib_device_set_netns_put(skb, device, ns_fd);
1103 goto put_done;
1104 }
1105
1106 if (tb[RDMA_NLDEV_ATTR_DEV_DIM]) {
1107 u8 use_dim;
1108
1109 use_dim = nla_get_u8(tb[RDMA_NLDEV_ATTR_DEV_DIM]);
1110 err = ib_device_set_dim(device, use_dim);
1111 goto done;
1112 }
1113
1114done:
1115 ib_device_put(device);
1116put_done:
1117 return err;
1118}
1119
1120static int _nldev_get_dumpit(struct ib_device *device,
1121 struct sk_buff *skb,
1122 struct netlink_callback *cb,
1123 unsigned int idx)
1124{
1125 int start = cb->args[0];
1126 struct nlmsghdr *nlh;
1127
1128 if (idx < start)
1129 return 0;
1130
1131 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
1132 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
1133 0, NLM_F_MULTI);
1134
1135 if (!nlh || fill_dev_info(skb, device)) {
1136 nlmsg_cancel(skb, nlh);
1137 goto out;
1138 }
1139
1140 nlmsg_end(skb, nlh);
1141
1142 idx++;
1143
1144out: cb->args[0] = idx;
1145 return skb->len;
1146}
1147
1148static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
1149{
1150 /*
1151 * There is no need to take lock, because
1152 * we are relying on ib_core's locking.
1153 */
1154 return ib_enum_all_devs(_nldev_get_dumpit, skb, cb);
1155}
1156
1157static int nldev_port_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1158 struct netlink_ext_ack *extack)
1159{
1160 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1161 struct ib_device *device;
1162 struct sk_buff *msg;
1163 u32 index;
1164 u32 port;
1165 int err;
1166
1167 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1168 nldev_policy, extack);
1169 if (err ||
1170 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
1171 !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
1172 return -EINVAL;
1173
1174 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1175 device = ib_device_get_by_index(sock_net(skb->sk), index);
1176 if (!device)
1177 return -EINVAL;
1178
1179 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1180 if (!rdma_is_port_valid(device, port)) {
1181 err = -EINVAL;
1182 goto err;
1183 }
1184
1185 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1186 if (!msg) {
1187 err = -ENOMEM;
1188 goto err;
1189 }
1190
1191 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1192 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
1193 0, 0);
1194 if (!nlh) {
1195 err = -EMSGSIZE;
1196 goto err_free;
1197 }
1198
1199 err = fill_port_info(msg, device, port, sock_net(skb->sk));
1200 if (err)
1201 goto err_free;
1202
1203 nlmsg_end(msg, nlh);
1204 ib_device_put(device);
1205
1206 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1207
1208err_free:
1209 nlmsg_free(msg);
1210err:
1211 ib_device_put(device);
1212 return err;
1213}
1214
1215static int nldev_port_get_dumpit(struct sk_buff *skb,
1216 struct netlink_callback *cb)
1217{
1218 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1219 struct ib_device *device;
1220 int start = cb->args[0];
1221 struct nlmsghdr *nlh;
1222 u32 idx = 0;
1223 u32 ifindex;
1224 int err;
1225 unsigned int p;
1226
1227 err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1228 nldev_policy, NULL);
1229 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1230 return -EINVAL;
1231
1232 ifindex = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1233 device = ib_device_get_by_index(sock_net(skb->sk), ifindex);
1234 if (!device)
1235 return -EINVAL;
1236
1237 rdma_for_each_port (device, p) {
1238 /*
1239 * The dumpit function returns all information from specific
1240 * index. This specific index is taken from the netlink
1241 * messages request sent by user and it is available
1242 * in cb->args[0].
1243 *
1244 * Usually, the user doesn't fill this field and it causes
1245 * to return everything.
1246 *
1247 */
1248 if (idx < start) {
1249 idx++;
1250 continue;
1251 }
1252
1253 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid,
1254 cb->nlh->nlmsg_seq,
1255 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1256 RDMA_NLDEV_CMD_PORT_GET),
1257 0, NLM_F_MULTI);
1258
1259 if (!nlh || fill_port_info(skb, device, p, sock_net(skb->sk))) {
1260 nlmsg_cancel(skb, nlh);
1261 goto out;
1262 }
1263 idx++;
1264 nlmsg_end(skb, nlh);
1265 }
1266
1267out:
1268 ib_device_put(device);
1269 cb->args[0] = idx;
1270 return skb->len;
1271}
1272
1273static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1274 struct netlink_ext_ack *extack)
1275{
1276 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1277 struct ib_device *device;
1278 struct sk_buff *msg;
1279 u32 index;
1280 int ret;
1281
1282 ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1283 nldev_policy, extack);
1284 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1285 return -EINVAL;
1286
1287 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1288 device = ib_device_get_by_index(sock_net(skb->sk), index);
1289 if (!device)
1290 return -EINVAL;
1291
1292 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1293 if (!msg) {
1294 ret = -ENOMEM;
1295 goto err;
1296 }
1297
1298 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1299 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
1300 0, 0);
1301 if (!nlh) {
1302 ret = -EMSGSIZE;
1303 goto err_free;
1304 }
1305
1306 ret = fill_res_info(msg, device);
1307 if (ret)
1308 goto err_free;
1309
1310 nlmsg_end(msg, nlh);
1311 ib_device_put(device);
1312 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1313
1314err_free:
1315 nlmsg_free(msg);
1316err:
1317 ib_device_put(device);
1318 return ret;
1319}
1320
1321static int _nldev_res_get_dumpit(struct ib_device *device,
1322 struct sk_buff *skb,
1323 struct netlink_callback *cb,
1324 unsigned int idx)
1325{
1326 int start = cb->args[0];
1327 struct nlmsghdr *nlh;
1328
1329 if (idx < start)
1330 return 0;
1331
1332 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
1333 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
1334 0, NLM_F_MULTI);
1335
1336 if (!nlh || fill_res_info(skb, device)) {
1337 nlmsg_cancel(skb, nlh);
1338 goto out;
1339 }
1340 nlmsg_end(skb, nlh);
1341
1342 idx++;
1343
1344out:
1345 cb->args[0] = idx;
1346 return skb->len;
1347}
1348
1349static int nldev_res_get_dumpit(struct sk_buff *skb,
1350 struct netlink_callback *cb)
1351{
1352 return ib_enum_all_devs(_nldev_res_get_dumpit, skb, cb);
1353}
1354
1355struct nldev_fill_res_entry {
1356 enum rdma_nldev_attr nldev_attr;
1357 u8 flags;
1358 u32 entry;
1359 u32 id;
1360};
1361
1362enum nldev_res_flags {
1363 NLDEV_PER_DEV = 1 << 0,
1364};
1365
1366static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
1367 [RDMA_RESTRACK_QP] = {
1368 .nldev_attr = RDMA_NLDEV_ATTR_RES_QP,
1369 .entry = RDMA_NLDEV_ATTR_RES_QP_ENTRY,
1370 .id = RDMA_NLDEV_ATTR_RES_LQPN,
1371 },
1372 [RDMA_RESTRACK_CM_ID] = {
1373 .nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID,
1374 .entry = RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY,
1375 .id = RDMA_NLDEV_ATTR_RES_CM_IDN,
1376 },
1377 [RDMA_RESTRACK_CQ] = {
1378 .nldev_attr = RDMA_NLDEV_ATTR_RES_CQ,
1379 .flags = NLDEV_PER_DEV,
1380 .entry = RDMA_NLDEV_ATTR_RES_CQ_ENTRY,
1381 .id = RDMA_NLDEV_ATTR_RES_CQN,
1382 },
1383 [RDMA_RESTRACK_MR] = {
1384 .nldev_attr = RDMA_NLDEV_ATTR_RES_MR,
1385 .flags = NLDEV_PER_DEV,
1386 .entry = RDMA_NLDEV_ATTR_RES_MR_ENTRY,
1387 .id = RDMA_NLDEV_ATTR_RES_MRN,
1388 },
1389 [RDMA_RESTRACK_PD] = {
1390 .nldev_attr = RDMA_NLDEV_ATTR_RES_PD,
1391 .flags = NLDEV_PER_DEV,
1392 .entry = RDMA_NLDEV_ATTR_RES_PD_ENTRY,
1393 .id = RDMA_NLDEV_ATTR_RES_PDN,
1394 },
1395 [RDMA_RESTRACK_COUNTER] = {
1396 .nldev_attr = RDMA_NLDEV_ATTR_STAT_COUNTER,
1397 .entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY,
1398 .id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID,
1399 },
1400 [RDMA_RESTRACK_CTX] = {
1401 .nldev_attr = RDMA_NLDEV_ATTR_RES_CTX,
1402 .flags = NLDEV_PER_DEV,
1403 .entry = RDMA_NLDEV_ATTR_RES_CTX_ENTRY,
1404 .id = RDMA_NLDEV_ATTR_RES_CTXN,
1405 },
1406 [RDMA_RESTRACK_SRQ] = {
1407 .nldev_attr = RDMA_NLDEV_ATTR_RES_SRQ,
1408 .flags = NLDEV_PER_DEV,
1409 .entry = RDMA_NLDEV_ATTR_RES_SRQ_ENTRY,
1410 .id = RDMA_NLDEV_ATTR_RES_SRQN,
1411 },
1412
1413};
1414
1415static int res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1416 struct netlink_ext_ack *extack,
1417 enum rdma_restrack_type res_type,
1418 res_fill_func_t fill_func)
1419{
1420 const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
1421 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1422 struct rdma_restrack_entry *res;
1423 struct ib_device *device;
1424 u32 index, id, port = 0;
1425 bool has_cap_net_admin;
1426 struct sk_buff *msg;
1427 int ret;
1428
1429 ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1430 nldev_policy, extack);
1431 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !fe->id || !tb[fe->id])
1432 return -EINVAL;
1433
1434 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1435 device = ib_device_get_by_index(sock_net(skb->sk), index);
1436 if (!device)
1437 return -EINVAL;
1438
1439 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1440 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1441 if (!rdma_is_port_valid(device, port)) {
1442 ret = -EINVAL;
1443 goto err;
1444 }
1445 }
1446
1447 if ((port && fe->flags & NLDEV_PER_DEV) ||
1448 (!port && ~fe->flags & NLDEV_PER_DEV)) {
1449 ret = -EINVAL;
1450 goto err;
1451 }
1452
1453 id = nla_get_u32(tb[fe->id]);
1454 res = rdma_restrack_get_byid(device, res_type, id);
1455 if (IS_ERR(res)) {
1456 ret = PTR_ERR(res);
1457 goto err;
1458 }
1459
1460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1461 if (!msg) {
1462 ret = -ENOMEM;
1463 goto err_get;
1464 }
1465
1466 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1467 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1468 RDMA_NL_GET_OP(nlh->nlmsg_type)),
1469 0, 0);
1470
1471 if (!nlh || fill_nldev_handle(msg, device)) {
1472 ret = -EMSGSIZE;
1473 goto err_free;
1474 }
1475
1476 has_cap_net_admin = netlink_capable(skb, CAP_NET_ADMIN);
1477
1478 ret = fill_func(msg, has_cap_net_admin, res, port);
1479 if (ret)
1480 goto err_free;
1481
1482 rdma_restrack_put(res);
1483 nlmsg_end(msg, nlh);
1484 ib_device_put(device);
1485 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1486
1487err_free:
1488 nlmsg_free(msg);
1489err_get:
1490 rdma_restrack_put(res);
1491err:
1492 ib_device_put(device);
1493 return ret;
1494}
1495
1496static int res_get_common_dumpit(struct sk_buff *skb,
1497 struct netlink_callback *cb,
1498 enum rdma_restrack_type res_type,
1499 res_fill_func_t fill_func)
1500{
1501 const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
1502 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1503 struct rdma_restrack_entry *res;
1504 struct rdma_restrack_root *rt;
1505 int err, ret = 0, idx = 0;
1506 struct nlattr *table_attr;
1507 struct nlattr *entry_attr;
1508 struct ib_device *device;
1509 int start = cb->args[0];
1510 bool has_cap_net_admin;
1511 struct nlmsghdr *nlh;
1512 unsigned long id;
1513 u32 index, port = 0;
1514 bool filled = false;
1515
1516 err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1517 nldev_policy, NULL);
1518 /*
1519 * Right now, we are expecting the device index to get res information,
1520 * but it is possible to extend this code to return all devices in
1521 * one shot by checking the existence of RDMA_NLDEV_ATTR_DEV_INDEX.
1522 * if it doesn't exist, we will iterate over all devices.
1523 *
1524 * But it is not needed for now.
1525 */
1526 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1527 return -EINVAL;
1528
1529 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1530 device = ib_device_get_by_index(sock_net(skb->sk), index);
1531 if (!device)
1532 return -EINVAL;
1533
1534 /*
1535 * If no PORT_INDEX is supplied, we will return all QPs from that device
1536 */
1537 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1538 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1539 if (!rdma_is_port_valid(device, port)) {
1540 ret = -EINVAL;
1541 goto err_index;
1542 }
1543 }
1544
1545 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
1546 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1547 RDMA_NL_GET_OP(cb->nlh->nlmsg_type)),
1548 0, NLM_F_MULTI);
1549
1550 if (!nlh || fill_nldev_handle(skb, device)) {
1551 ret = -EMSGSIZE;
1552 goto err;
1553 }
1554
1555 table_attr = nla_nest_start_noflag(skb, fe->nldev_attr);
1556 if (!table_attr) {
1557 ret = -EMSGSIZE;
1558 goto err;
1559 }
1560
1561 has_cap_net_admin = netlink_capable(cb->skb, CAP_NET_ADMIN);
1562
1563 rt = &device->res[res_type];
1564 xa_lock(&rt->xa);
1565 /*
1566 * FIXME: if the skip ahead is something common this loop should
1567 * use xas_for_each & xas_pause to optimize, we can have a lot of
1568 * objects.
1569 */
1570 xa_for_each(&rt->xa, id, res) {
1571 if (idx < start || !rdma_restrack_get(res))
1572 goto next;
1573
1574 xa_unlock(&rt->xa);
1575
1576 filled = true;
1577
1578 entry_attr = nla_nest_start_noflag(skb, fe->entry);
1579 if (!entry_attr) {
1580 ret = -EMSGSIZE;
1581 rdma_restrack_put(res);
1582 goto msg_full;
1583 }
1584
1585 ret = fill_func(skb, has_cap_net_admin, res, port);
1586
1587 rdma_restrack_put(res);
1588
1589 if (ret) {
1590 nla_nest_cancel(skb, entry_attr);
1591 if (ret == -EMSGSIZE)
1592 goto msg_full;
1593 if (ret == -EAGAIN)
1594 goto again;
1595 goto res_err;
1596 }
1597 nla_nest_end(skb, entry_attr);
1598again: xa_lock(&rt->xa);
1599next: idx++;
1600 }
1601 xa_unlock(&rt->xa);
1602
1603msg_full:
1604 nla_nest_end(skb, table_attr);
1605 nlmsg_end(skb, nlh);
1606 cb->args[0] = idx;
1607
1608 /*
1609 * No more entries to fill, cancel the message and
1610 * return 0 to mark end of dumpit.
1611 */
1612 if (!filled)
1613 goto err;
1614
1615 ib_device_put(device);
1616 return skb->len;
1617
1618res_err:
1619 nla_nest_cancel(skb, table_attr);
1620
1621err:
1622 nlmsg_cancel(skb, nlh);
1623
1624err_index:
1625 ib_device_put(device);
1626 return ret;
1627}
1628
1629#define RES_GET_FUNCS(name, type) \
1630 static int nldev_res_get_##name##_dumpit(struct sk_buff *skb, \
1631 struct netlink_callback *cb) \
1632 { \
1633 return res_get_common_dumpit(skb, cb, type, \
1634 fill_res_##name##_entry); \
1635 } \
1636 static int nldev_res_get_##name##_doit(struct sk_buff *skb, \
1637 struct nlmsghdr *nlh, \
1638 struct netlink_ext_ack *extack) \
1639 { \
1640 return res_get_common_doit(skb, nlh, extack, type, \
1641 fill_res_##name##_entry); \
1642 }
1643
1644RES_GET_FUNCS(qp, RDMA_RESTRACK_QP);
1645RES_GET_FUNCS(qp_raw, RDMA_RESTRACK_QP);
1646RES_GET_FUNCS(cm_id, RDMA_RESTRACK_CM_ID);
1647RES_GET_FUNCS(cq, RDMA_RESTRACK_CQ);
1648RES_GET_FUNCS(cq_raw, RDMA_RESTRACK_CQ);
1649RES_GET_FUNCS(pd, RDMA_RESTRACK_PD);
1650RES_GET_FUNCS(mr, RDMA_RESTRACK_MR);
1651RES_GET_FUNCS(mr_raw, RDMA_RESTRACK_MR);
1652RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER);
1653RES_GET_FUNCS(ctx, RDMA_RESTRACK_CTX);
1654RES_GET_FUNCS(srq, RDMA_RESTRACK_SRQ);
1655
1656static LIST_HEAD(link_ops);
1657static DECLARE_RWSEM(link_ops_rwsem);
1658
1659static const struct rdma_link_ops *link_ops_get(const char *type)
1660{
1661 const struct rdma_link_ops *ops;
1662
1663 list_for_each_entry(ops, &link_ops, list) {
1664 if (!strcmp(ops->type, type))
1665 goto out;
1666 }
1667 ops = NULL;
1668out:
1669 return ops;
1670}
1671
1672void rdma_link_register(struct rdma_link_ops *ops)
1673{
1674 down_write(&link_ops_rwsem);
1675 if (WARN_ON_ONCE(link_ops_get(ops->type)))
1676 goto out;
1677 list_add(&ops->list, &link_ops);
1678out:
1679 up_write(&link_ops_rwsem);
1680}
1681EXPORT_SYMBOL(rdma_link_register);
1682
1683void rdma_link_unregister(struct rdma_link_ops *ops)
1684{
1685 down_write(&link_ops_rwsem);
1686 list_del(&ops->list);
1687 up_write(&link_ops_rwsem);
1688}
1689EXPORT_SYMBOL(rdma_link_unregister);
1690
1691static int nldev_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
1692 struct netlink_ext_ack *extack)
1693{
1694 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1695 char ibdev_name[IB_DEVICE_NAME_MAX];
1696 const struct rdma_link_ops *ops;
1697 char ndev_name[IFNAMSIZ];
1698 struct net_device *ndev;
1699 char type[IFNAMSIZ];
1700 int err;
1701
1702 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1703 nldev_policy, extack);
1704 if (err || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
1705 !tb[RDMA_NLDEV_ATTR_LINK_TYPE] || !tb[RDMA_NLDEV_ATTR_NDEV_NAME])
1706 return -EINVAL;
1707
1708 nla_strscpy(ibdev_name, tb[RDMA_NLDEV_ATTR_DEV_NAME],
1709 sizeof(ibdev_name));
1710 if (strchr(ibdev_name, '%') || strlen(ibdev_name) == 0)
1711 return -EINVAL;
1712
1713 nla_strscpy(type, tb[RDMA_NLDEV_ATTR_LINK_TYPE], sizeof(type));
1714 nla_strscpy(ndev_name, tb[RDMA_NLDEV_ATTR_NDEV_NAME],
1715 sizeof(ndev_name));
1716
1717 ndev = dev_get_by_name(sock_net(skb->sk), ndev_name);
1718 if (!ndev)
1719 return -ENODEV;
1720
1721 down_read(&link_ops_rwsem);
1722 ops = link_ops_get(type);
1723#ifdef CONFIG_MODULES
1724 if (!ops) {
1725 up_read(&link_ops_rwsem);
1726 request_module("rdma-link-%s", type);
1727 down_read(&link_ops_rwsem);
1728 ops = link_ops_get(type);
1729 }
1730#endif
1731 err = ops ? ops->newlink(ibdev_name, ndev) : -EINVAL;
1732 up_read(&link_ops_rwsem);
1733 dev_put(ndev);
1734
1735 return err;
1736}
1737
1738static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
1739 struct netlink_ext_ack *extack)
1740{
1741 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1742 struct ib_device *device;
1743 u32 index;
1744 int err;
1745
1746 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1747 nldev_policy, extack);
1748 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1749 return -EINVAL;
1750
1751 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1752 device = ib_device_get_by_index(sock_net(skb->sk), index);
1753 if (!device)
1754 return -EINVAL;
1755
1756 if (!(device->attrs.kernel_cap_flags & IBK_ALLOW_USER_UNREG)) {
1757 ib_device_put(device);
1758 return -EINVAL;
1759 }
1760
1761 ib_unregister_device_and_put(device);
1762 return 0;
1763}
1764
1765static int nldev_get_chardev(struct sk_buff *skb, struct nlmsghdr *nlh,
1766 struct netlink_ext_ack *extack)
1767{
1768 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1769 char client_name[RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE];
1770 struct ib_client_nl_info data = {};
1771 struct ib_device *ibdev = NULL;
1772 struct sk_buff *msg;
1773 u32 index;
1774 int err;
1775
1776 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy,
1777 extack);
1778 if (err || !tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE])
1779 return -EINVAL;
1780
1781 nla_strscpy(client_name, tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE],
1782 sizeof(client_name));
1783
1784 if (tb[RDMA_NLDEV_ATTR_DEV_INDEX]) {
1785 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1786 ibdev = ib_device_get_by_index(sock_net(skb->sk), index);
1787 if (!ibdev)
1788 return -EINVAL;
1789
1790 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1791 data.port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1792 if (!rdma_is_port_valid(ibdev, data.port)) {
1793 err = -EINVAL;
1794 goto out_put;
1795 }
1796 } else {
1797 data.port = -1;
1798 }
1799 } else if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1800 return -EINVAL;
1801 }
1802
1803 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1804 if (!msg) {
1805 err = -ENOMEM;
1806 goto out_put;
1807 }
1808 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1809 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1810 RDMA_NLDEV_CMD_GET_CHARDEV),
1811 0, 0);
1812 if (!nlh) {
1813 err = -EMSGSIZE;
1814 goto out_nlmsg;
1815 }
1816
1817 data.nl_msg = msg;
1818 err = ib_get_client_nl_info(ibdev, client_name, &data);
1819 if (err)
1820 goto out_nlmsg;
1821
1822 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV,
1823 huge_encode_dev(data.cdev->devt),
1824 RDMA_NLDEV_ATTR_PAD);
1825 if (err)
1826 goto out_data;
1827 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV_ABI, data.abi,
1828 RDMA_NLDEV_ATTR_PAD);
1829 if (err)
1830 goto out_data;
1831 if (nla_put_string(msg, RDMA_NLDEV_ATTR_CHARDEV_NAME,
1832 dev_name(data.cdev))) {
1833 err = -EMSGSIZE;
1834 goto out_data;
1835 }
1836
1837 nlmsg_end(msg, nlh);
1838 put_device(data.cdev);
1839 if (ibdev)
1840 ib_device_put(ibdev);
1841 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1842
1843out_data:
1844 put_device(data.cdev);
1845out_nlmsg:
1846 nlmsg_free(msg);
1847out_put:
1848 if (ibdev)
1849 ib_device_put(ibdev);
1850 return err;
1851}
1852
1853static int nldev_sys_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1854 struct netlink_ext_ack *extack)
1855{
1856 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1857 struct sk_buff *msg;
1858 int err;
1859
1860 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1861 nldev_policy, extack);
1862 if (err)
1863 return err;
1864
1865 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1866 if (!msg)
1867 return -ENOMEM;
1868
1869 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1870 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1871 RDMA_NLDEV_CMD_SYS_GET),
1872 0, 0);
1873 if (!nlh) {
1874 nlmsg_free(msg);
1875 return -EMSGSIZE;
1876 }
1877
1878 err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_NETNS_MODE,
1879 (u8)ib_devices_shared_netns);
1880 if (err) {
1881 nlmsg_free(msg);
1882 return err;
1883 }
1884
1885 /*
1886 * Copy-on-fork is supported.
1887 * See commits:
1888 * 70e806e4e645 ("mm: Do early cow for pinned pages during fork() for ptes")
1889 * 4eae4efa2c29 ("hugetlb: do early cow when page pinned on src mm")
1890 * for more details. Don't backport this without them.
1891 *
1892 * Return value ignored on purpose, assume copy-on-fork is not
1893 * supported in case of failure.
1894 */
1895 nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK, 1);
1896
1897 nlmsg_end(msg, nlh);
1898 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1899}
1900
1901static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1902 struct netlink_ext_ack *extack)
1903{
1904 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1905 u8 enable;
1906 int err;
1907
1908 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1909 nldev_policy, extack);
1910 if (err || !tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE])
1911 return -EINVAL;
1912
1913 enable = nla_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]);
1914 /* Only 0 and 1 are supported */
1915 if (enable > 1)
1916 return -EINVAL;
1917
1918 err = rdma_compatdev_set(enable);
1919 return err;
1920}
1921
1922static int nldev_stat_set_mode_doit(struct sk_buff *msg,
1923 struct netlink_ext_ack *extack,
1924 struct nlattr *tb[],
1925 struct ib_device *device, u32 port)
1926{
1927 u32 mode, mask = 0, qpn, cntn = 0;
1928 int ret;
1929
1930 /* Currently only counter for QP is supported */
1931 if (!tb[RDMA_NLDEV_ATTR_STAT_RES] ||
1932 nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP)
1933 return -EINVAL;
1934
1935 mode = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_MODE]);
1936 if (mode == RDMA_COUNTER_MODE_AUTO) {
1937 if (tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK])
1938 mask = nla_get_u32(
1939 tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]);
1940 return rdma_counter_set_auto_mode(device, port, mask, extack);
1941 }
1942
1943 if (!tb[RDMA_NLDEV_ATTR_RES_LQPN])
1944 return -EINVAL;
1945
1946 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]);
1947 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) {
1948 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);
1949 ret = rdma_counter_bind_qpn(device, port, qpn, cntn);
1950 if (ret)
1951 return ret;
1952 } else {
1953 ret = rdma_counter_bind_qpn_alloc(device, port, qpn, &cntn);
1954 if (ret)
1955 return ret;
1956 }
1957
1958 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) ||
1959 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) {
1960 ret = -EMSGSIZE;
1961 goto err_fill;
1962 }
1963
1964 return 0;
1965
1966err_fill:
1967 rdma_counter_unbind_qpn(device, port, qpn, cntn);
1968 return ret;
1969}
1970
1971static int nldev_stat_set_counter_dynamic_doit(struct nlattr *tb[],
1972 struct ib_device *device,
1973 u32 port)
1974{
1975 struct rdma_hw_stats *stats;
1976 struct nlattr *entry_attr;
1977 unsigned long *target;
1978 int rem, i, ret = 0;
1979 u32 index;
1980
1981 stats = ib_get_hw_stats_port(device, port);
1982 if (!stats)
1983 return -EINVAL;
1984
1985 target = kcalloc(BITS_TO_LONGS(stats->num_counters),
1986 sizeof(*stats->is_disabled), GFP_KERNEL);
1987 if (!target)
1988 return -ENOMEM;
1989
1990 nla_for_each_nested(entry_attr, tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS],
1991 rem) {
1992 index = nla_get_u32(entry_attr);
1993 if ((index >= stats->num_counters) ||
1994 !(stats->descs[index].flags & IB_STAT_FLAG_OPTIONAL)) {
1995 ret = -EINVAL;
1996 goto out;
1997 }
1998
1999 set_bit(index, target);
2000 }
2001
2002 for (i = 0; i < stats->num_counters; i++) {
2003 if (!(stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL))
2004 continue;
2005
2006 ret = rdma_counter_modify(device, port, i, test_bit(i, target));
2007 if (ret)
2008 goto out;
2009 }
2010
2011out:
2012 kfree(target);
2013 return ret;
2014}
2015
2016static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
2017 struct netlink_ext_ack *extack)
2018{
2019 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2020 struct ib_device *device;
2021 struct sk_buff *msg;
2022 u32 index, port;
2023 int ret;
2024
2025 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy,
2026 extack);
2027 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
2028 !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2029 return -EINVAL;
2030
2031 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2032 device = ib_device_get_by_index(sock_net(skb->sk), index);
2033 if (!device)
2034 return -EINVAL;
2035
2036 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2037 if (!rdma_is_port_valid(device, port)) {
2038 ret = -EINVAL;
2039 goto err_put_device;
2040 }
2041
2042 if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] &&
2043 !tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS]) {
2044 ret = -EINVAL;
2045 goto err_put_device;
2046 }
2047
2048 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2049 if (!msg) {
2050 ret = -ENOMEM;
2051 goto err_put_device;
2052 }
2053 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2054 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2055 RDMA_NLDEV_CMD_STAT_SET),
2056 0, 0);
2057 if (!nlh || fill_nldev_handle(msg, device) ||
2058 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) {
2059 ret = -EMSGSIZE;
2060 goto err_free_msg;
2061 }
2062
2063 if (tb[RDMA_NLDEV_ATTR_STAT_MODE]) {
2064 ret = nldev_stat_set_mode_doit(msg, extack, tb, device, port);
2065 if (ret)
2066 goto err_free_msg;
2067 }
2068
2069 if (tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS]) {
2070 ret = nldev_stat_set_counter_dynamic_doit(tb, device, port);
2071 if (ret)
2072 goto err_free_msg;
2073 }
2074
2075 nlmsg_end(msg, nlh);
2076 ib_device_put(device);
2077 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2078
2079err_free_msg:
2080 nlmsg_free(msg);
2081err_put_device:
2082 ib_device_put(device);
2083 return ret;
2084}
2085
2086static int nldev_stat_del_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
2087 struct netlink_ext_ack *extack)
2088{
2089 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2090 struct ib_device *device;
2091 struct sk_buff *msg;
2092 u32 index, port, qpn, cntn;
2093 int ret;
2094
2095 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2096 nldev_policy, extack);
2097 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] ||
2098 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX] ||
2099 !tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID] ||
2100 !tb[RDMA_NLDEV_ATTR_RES_LQPN])
2101 return -EINVAL;
2102
2103 if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP)
2104 return -EINVAL;
2105
2106 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2107 device = ib_device_get_by_index(sock_net(skb->sk), index);
2108 if (!device)
2109 return -EINVAL;
2110
2111 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2112 if (!rdma_is_port_valid(device, port)) {
2113 ret = -EINVAL;
2114 goto err;
2115 }
2116
2117 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2118 if (!msg) {
2119 ret = -ENOMEM;
2120 goto err;
2121 }
2122 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2123 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2124 RDMA_NLDEV_CMD_STAT_SET),
2125 0, 0);
2126 if (!nlh) {
2127 ret = -EMSGSIZE;
2128 goto err_fill;
2129 }
2130
2131 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);
2132 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]);
2133 if (fill_nldev_handle(msg, device) ||
2134 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) ||
2135 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) ||
2136 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) {
2137 ret = -EMSGSIZE;
2138 goto err_fill;
2139 }
2140
2141 ret = rdma_counter_unbind_qpn(device, port, qpn, cntn);
2142 if (ret)
2143 goto err_fill;
2144
2145 nlmsg_end(msg, nlh);
2146 ib_device_put(device);
2147 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2148
2149err_fill:
2150 nlmsg_free(msg);
2151err:
2152 ib_device_put(device);
2153 return ret;
2154}
2155
2156static int stat_get_doit_default_counter(struct sk_buff *skb,
2157 struct nlmsghdr *nlh,
2158 struct netlink_ext_ack *extack,
2159 struct nlattr *tb[])
2160{
2161 struct rdma_hw_stats *stats;
2162 struct nlattr *table_attr;
2163 struct ib_device *device;
2164 int ret, num_cnts, i;
2165 struct sk_buff *msg;
2166 u32 index, port;
2167 u64 v;
2168
2169 if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2170 return -EINVAL;
2171
2172 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2173 device = ib_device_get_by_index(sock_net(skb->sk), index);
2174 if (!device)
2175 return -EINVAL;
2176
2177 if (!device->ops.alloc_hw_port_stats || !device->ops.get_hw_stats) {
2178 ret = -EINVAL;
2179 goto err;
2180 }
2181
2182 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2183 stats = ib_get_hw_stats_port(device, port);
2184 if (!stats) {
2185 ret = -EINVAL;
2186 goto err;
2187 }
2188
2189 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2190 if (!msg) {
2191 ret = -ENOMEM;
2192 goto err;
2193 }
2194
2195 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2196 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2197 RDMA_NLDEV_CMD_STAT_GET),
2198 0, 0);
2199
2200 if (!nlh || fill_nldev_handle(msg, device) ||
2201 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) {
2202 ret = -EMSGSIZE;
2203 goto err_msg;
2204 }
2205
2206 mutex_lock(&stats->lock);
2207
2208 num_cnts = device->ops.get_hw_stats(device, stats, port, 0);
2209 if (num_cnts < 0) {
2210 ret = -EINVAL;
2211 goto err_stats;
2212 }
2213
2214 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
2215 if (!table_attr) {
2216 ret = -EMSGSIZE;
2217 goto err_stats;
2218 }
2219 for (i = 0; i < num_cnts; i++) {
2220 if (test_bit(i, stats->is_disabled))
2221 continue;
2222
2223 v = stats->value[i] +
2224 rdma_counter_get_hwstat_value(device, port, i);
2225 if (rdma_nl_stat_hwcounter_entry(msg,
2226 stats->descs[i].name, v)) {
2227 ret = -EMSGSIZE;
2228 goto err_table;
2229 }
2230 }
2231 nla_nest_end(msg, table_attr);
2232
2233 mutex_unlock(&stats->lock);
2234 nlmsg_end(msg, nlh);
2235 ib_device_put(device);
2236 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2237
2238err_table:
2239 nla_nest_cancel(msg, table_attr);
2240err_stats:
2241 mutex_unlock(&stats->lock);
2242err_msg:
2243 nlmsg_free(msg);
2244err:
2245 ib_device_put(device);
2246 return ret;
2247}
2248
2249static int stat_get_doit_qp(struct sk_buff *skb, struct nlmsghdr *nlh,
2250 struct netlink_ext_ack *extack, struct nlattr *tb[])
2251
2252{
2253 static enum rdma_nl_counter_mode mode;
2254 static enum rdma_nl_counter_mask mask;
2255 struct ib_device *device;
2256 struct sk_buff *msg;
2257 u32 index, port;
2258 int ret;
2259
2260 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID])
2261 return nldev_res_get_counter_doit(skb, nlh, extack);
2262
2263 if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] ||
2264 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2265 return -EINVAL;
2266
2267 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2268 device = ib_device_get_by_index(sock_net(skb->sk), index);
2269 if (!device)
2270 return -EINVAL;
2271
2272 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2273 if (!rdma_is_port_valid(device, port)) {
2274 ret = -EINVAL;
2275 goto err;
2276 }
2277
2278 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2279 if (!msg) {
2280 ret = -ENOMEM;
2281 goto err;
2282 }
2283
2284 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2285 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2286 RDMA_NLDEV_CMD_STAT_GET),
2287 0, 0);
2288 if (!nlh) {
2289 ret = -EMSGSIZE;
2290 goto err_msg;
2291 }
2292
2293 ret = rdma_counter_get_mode(device, port, &mode, &mask);
2294 if (ret)
2295 goto err_msg;
2296
2297 if (fill_nldev_handle(msg, device) ||
2298 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) ||
2299 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, mode)) {
2300 ret = -EMSGSIZE;
2301 goto err_msg;
2302 }
2303
2304 if ((mode == RDMA_COUNTER_MODE_AUTO) &&
2305 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, mask)) {
2306 ret = -EMSGSIZE;
2307 goto err_msg;
2308 }
2309
2310 nlmsg_end(msg, nlh);
2311 ib_device_put(device);
2312 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2313
2314err_msg:
2315 nlmsg_free(msg);
2316err:
2317 ib_device_put(device);
2318 return ret;
2319}
2320
2321static int nldev_stat_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
2322 struct netlink_ext_ack *extack)
2323{
2324 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2325 int ret;
2326
2327 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2328 nldev_policy, extack);
2329 if (ret)
2330 return -EINVAL;
2331
2332 if (!tb[RDMA_NLDEV_ATTR_STAT_RES])
2333 return stat_get_doit_default_counter(skb, nlh, extack, tb);
2334
2335 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) {
2336 case RDMA_NLDEV_ATTR_RES_QP:
2337 ret = stat_get_doit_qp(skb, nlh, extack, tb);
2338 break;
2339 case RDMA_NLDEV_ATTR_RES_MR:
2340 ret = res_get_common_doit(skb, nlh, extack, RDMA_RESTRACK_MR,
2341 fill_stat_mr_entry);
2342 break;
2343 default:
2344 ret = -EINVAL;
2345 break;
2346 }
2347
2348 return ret;
2349}
2350
2351static int nldev_stat_get_dumpit(struct sk_buff *skb,
2352 struct netlink_callback *cb)
2353{
2354 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2355 int ret;
2356
2357 ret = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2358 nldev_policy, NULL);
2359 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES])
2360 return -EINVAL;
2361
2362 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) {
2363 case RDMA_NLDEV_ATTR_RES_QP:
2364 ret = nldev_res_get_counter_dumpit(skb, cb);
2365 break;
2366 case RDMA_NLDEV_ATTR_RES_MR:
2367 ret = res_get_common_dumpit(skb, cb, RDMA_RESTRACK_MR,
2368 fill_stat_mr_entry);
2369 break;
2370 default:
2371 ret = -EINVAL;
2372 break;
2373 }
2374
2375 return ret;
2376}
2377
2378static int nldev_stat_get_counter_status_doit(struct sk_buff *skb,
2379 struct nlmsghdr *nlh,
2380 struct netlink_ext_ack *extack)
2381{
2382 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX], *table, *entry;
2383 struct rdma_hw_stats *stats;
2384 struct ib_device *device;
2385 struct sk_buff *msg;
2386 u32 devid, port;
2387 int ret, i;
2388
2389 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2390 nldev_policy, extack);
2391 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
2392 !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2393 return -EINVAL;
2394
2395 devid = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2396 device = ib_device_get_by_index(sock_net(skb->sk), devid);
2397 if (!device)
2398 return -EINVAL;
2399
2400 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2401 if (!rdma_is_port_valid(device, port)) {
2402 ret = -EINVAL;
2403 goto err;
2404 }
2405
2406 stats = ib_get_hw_stats_port(device, port);
2407 if (!stats) {
2408 ret = -EINVAL;
2409 goto err;
2410 }
2411
2412 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2413 if (!msg) {
2414 ret = -ENOMEM;
2415 goto err;
2416 }
2417
2418 nlh = nlmsg_put(
2419 msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2420 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_STAT_GET_STATUS),
2421 0, 0);
2422
2423 ret = -EMSGSIZE;
2424 if (!nlh || fill_nldev_handle(msg, device) ||
2425 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port))
2426 goto err_msg;
2427
2428 table = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
2429 if (!table)
2430 goto err_msg;
2431
2432 mutex_lock(&stats->lock);
2433 for (i = 0; i < stats->num_counters; i++) {
2434 entry = nla_nest_start(msg,
2435 RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY);
2436 if (!entry)
2437 goto err_msg_table;
2438
2439 if (nla_put_string(msg,
2440 RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME,
2441 stats->descs[i].name) ||
2442 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_INDEX, i))
2443 goto err_msg_entry;
2444
2445 if ((stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) &&
2446 (nla_put_u8(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC,
2447 !test_bit(i, stats->is_disabled))))
2448 goto err_msg_entry;
2449
2450 nla_nest_end(msg, entry);
2451 }
2452 mutex_unlock(&stats->lock);
2453
2454 nla_nest_end(msg, table);
2455 nlmsg_end(msg, nlh);
2456 ib_device_put(device);
2457 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2458
2459err_msg_entry:
2460 nla_nest_cancel(msg, entry);
2461err_msg_table:
2462 mutex_unlock(&stats->lock);
2463 nla_nest_cancel(msg, table);
2464err_msg:
2465 nlmsg_free(msg);
2466err:
2467 ib_device_put(device);
2468 return ret;
2469}
2470
2471static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
2472 [RDMA_NLDEV_CMD_GET] = {
2473 .doit = nldev_get_doit,
2474 .dump = nldev_get_dumpit,
2475 },
2476 [RDMA_NLDEV_CMD_GET_CHARDEV] = {
2477 .doit = nldev_get_chardev,
2478 },
2479 [RDMA_NLDEV_CMD_SET] = {
2480 .doit = nldev_set_doit,
2481 .flags = RDMA_NL_ADMIN_PERM,
2482 },
2483 [RDMA_NLDEV_CMD_NEWLINK] = {
2484 .doit = nldev_newlink,
2485 .flags = RDMA_NL_ADMIN_PERM,
2486 },
2487 [RDMA_NLDEV_CMD_DELLINK] = {
2488 .doit = nldev_dellink,
2489 .flags = RDMA_NL_ADMIN_PERM,
2490 },
2491 [RDMA_NLDEV_CMD_PORT_GET] = {
2492 .doit = nldev_port_get_doit,
2493 .dump = nldev_port_get_dumpit,
2494 },
2495 [RDMA_NLDEV_CMD_RES_GET] = {
2496 .doit = nldev_res_get_doit,
2497 .dump = nldev_res_get_dumpit,
2498 },
2499 [RDMA_NLDEV_CMD_RES_QP_GET] = {
2500 .doit = nldev_res_get_qp_doit,
2501 .dump = nldev_res_get_qp_dumpit,
2502 },
2503 [RDMA_NLDEV_CMD_RES_CM_ID_GET] = {
2504 .doit = nldev_res_get_cm_id_doit,
2505 .dump = nldev_res_get_cm_id_dumpit,
2506 },
2507 [RDMA_NLDEV_CMD_RES_CQ_GET] = {
2508 .doit = nldev_res_get_cq_doit,
2509 .dump = nldev_res_get_cq_dumpit,
2510 },
2511 [RDMA_NLDEV_CMD_RES_MR_GET] = {
2512 .doit = nldev_res_get_mr_doit,
2513 .dump = nldev_res_get_mr_dumpit,
2514 },
2515 [RDMA_NLDEV_CMD_RES_PD_GET] = {
2516 .doit = nldev_res_get_pd_doit,
2517 .dump = nldev_res_get_pd_dumpit,
2518 },
2519 [RDMA_NLDEV_CMD_RES_CTX_GET] = {
2520 .doit = nldev_res_get_ctx_doit,
2521 .dump = nldev_res_get_ctx_dumpit,
2522 },
2523 [RDMA_NLDEV_CMD_RES_SRQ_GET] = {
2524 .doit = nldev_res_get_srq_doit,
2525 .dump = nldev_res_get_srq_dumpit,
2526 },
2527 [RDMA_NLDEV_CMD_SYS_GET] = {
2528 .doit = nldev_sys_get_doit,
2529 },
2530 [RDMA_NLDEV_CMD_SYS_SET] = {
2531 .doit = nldev_set_sys_set_doit,
2532 },
2533 [RDMA_NLDEV_CMD_STAT_SET] = {
2534 .doit = nldev_stat_set_doit,
2535 .flags = RDMA_NL_ADMIN_PERM,
2536 },
2537 [RDMA_NLDEV_CMD_STAT_GET] = {
2538 .doit = nldev_stat_get_doit,
2539 .dump = nldev_stat_get_dumpit,
2540 },
2541 [RDMA_NLDEV_CMD_STAT_DEL] = {
2542 .doit = nldev_stat_del_doit,
2543 .flags = RDMA_NL_ADMIN_PERM,
2544 },
2545 [RDMA_NLDEV_CMD_RES_QP_GET_RAW] = {
2546 .doit = nldev_res_get_qp_raw_doit,
2547 .dump = nldev_res_get_qp_raw_dumpit,
2548 .flags = RDMA_NL_ADMIN_PERM,
2549 },
2550 [RDMA_NLDEV_CMD_RES_CQ_GET_RAW] = {
2551 .doit = nldev_res_get_cq_raw_doit,
2552 .dump = nldev_res_get_cq_raw_dumpit,
2553 .flags = RDMA_NL_ADMIN_PERM,
2554 },
2555 [RDMA_NLDEV_CMD_RES_MR_GET_RAW] = {
2556 .doit = nldev_res_get_mr_raw_doit,
2557 .dump = nldev_res_get_mr_raw_dumpit,
2558 .flags = RDMA_NL_ADMIN_PERM,
2559 },
2560 [RDMA_NLDEV_CMD_STAT_GET_STATUS] = {
2561 .doit = nldev_stat_get_counter_status_doit,
2562 },
2563};
2564
2565void __init nldev_init(void)
2566{
2567 rdma_nl_register(RDMA_NL_NLDEV, nldev_cb_table);
2568}
2569
2570void nldev_exit(void)
2571{
2572 rdma_nl_unregister(RDMA_NL_NLDEV);
2573}
2574
2575MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5);