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
46 typedef 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 */
52 static 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
put_driver_name_print_type(struct sk_buff * msg,const char * name,enum rdma_nldev_print_type print_type)161 static 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
_rdma_nl_put_driver_u32(struct sk_buff * msg,const char * name,enum rdma_nldev_print_type print_type,u32 value)173 static 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
_rdma_nl_put_driver_u64(struct sk_buff * msg,const char * name,enum rdma_nldev_print_type print_type,u64 value)185 static 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
rdma_nl_put_driver_string(struct sk_buff * msg,const char * name,const char * str)198 int 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 }
209 EXPORT_SYMBOL(rdma_nl_put_driver_string);
210
rdma_nl_put_driver_u32(struct sk_buff * msg,const char * name,u32 value)211 int 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 }
216 EXPORT_SYMBOL(rdma_nl_put_driver_u32);
217
rdma_nl_put_driver_u32_hex(struct sk_buff * msg,const char * name,u32 value)218 int 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 }
224 EXPORT_SYMBOL(rdma_nl_put_driver_u32_hex);
225
rdma_nl_put_driver_u64(struct sk_buff * msg,const char * name,u64 value)226 int 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 }
231 EXPORT_SYMBOL(rdma_nl_put_driver_u64);
232
rdma_nl_put_driver_u64_hex(struct sk_buff * msg,const char * name,u64 value)233 int 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 }
238 EXPORT_SYMBOL(rdma_nl_put_driver_u64_hex);
239
fill_nldev_handle(struct sk_buff * msg,struct ib_device * device)240 static 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
fill_dev_info(struct sk_buff * msg,struct ib_device * device)251 static 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
fill_port_info(struct sk_buff * msg,struct ib_device * device,u32 port,const struct net * net)307 static 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
359 out:
360 if (netdev)
361 dev_put(netdev);
362 return ret;
363 }
364
fill_res_info_entry(struct sk_buff * msg,const char * name,u64 curr)365 static 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
384 err:
385 nla_nest_cancel(msg, entry_attr);
386 return -EMSGSIZE;
387 }
388
fill_res_info(struct sk_buff * msg,struct ib_device * device)389 static 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
423 err:
424 nla_nest_cancel(msg, table_attr);
425 return ret;
426 }
427
fill_res_name_pid(struct sk_buff * msg,struct rdma_restrack_entry * res)428 static 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
fill_res_qp_entry_query(struct sk_buff * msg,struct rdma_restrack_entry * res,struct ib_device * dev,struct ib_qp * qp)461 static 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
501 err: return -EMSGSIZE;
502 }
503
fill_res_qp_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)504 static 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
fill_res_qp_raw_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)533 static 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
fill_res_cm_id_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)546 static 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
595 err: return -EMSGSIZE;
596 }
597
fill_res_cq_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)598 static 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
fill_res_cq_raw_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)632 static 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
fill_res_mr_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)643 static 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
fill_res_mr_raw_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)675 static 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
fill_res_pd_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)686 static 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
714 err: return -EMSGSIZE;
715 }
716
fill_res_ctx_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)717 static 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
fill_res_range_qp_entry(struct sk_buff * msg,uint32_t min_range,uint32_t max_range)731 static 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
755 err:
756 nla_nest_cancel(msg, entry_attr);
757 return -EMSGSIZE;
758 }
759
fill_res_srq_qps(struct sk_buff * msg,struct ib_srq * srq)760 static 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
809 err_loop:
810 rdma_restrack_put(res);
811 xa_unlock(&rt->xa);
812 err:
813 nla_nest_cancel(msg, table_attr);
814 return -EMSGSIZE;
815 }
816
fill_res_srq_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)817 static 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
842 err:
843 return -EMSGSIZE;
844 }
845
fill_stat_counter_mode(struct sk_buff * msg,struct rdma_counter * counter)846 static 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
fill_stat_counter_qp_entry(struct sk_buff * msg,u32 qpn)867 static 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
881 err:
882 nla_nest_cancel(msg, entry_attr);
883 return -EMSGSIZE;
884 }
885
fill_stat_counter_qps(struct sk_buff * msg,struct rdma_counter * counter)886 static 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
916 err:
917 xa_unlock(&rt->xa);
918 nla_nest_cancel(msg, table_attr);
919 return ret;
920 }
921
rdma_nl_stat_hwcounter_entry(struct sk_buff * msg,const char * name,u64 value)922 int 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
941 err:
942 nla_nest_cancel(msg, entry_attr);
943 return -EMSGSIZE;
944 }
945 EXPORT_SYMBOL(rdma_nl_stat_hwcounter_entry);
946
fill_stat_mr_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)947 static 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
960 err:
961 return -EMSGSIZE;
962 }
963
fill_stat_counter_hwcounters(struct sk_buff * msg,struct rdma_counter * counter)964 static 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
988 err:
989 mutex_unlock(&st->lock);
990 nla_nest_cancel(msg, table_attr);
991 return -EMSGSIZE;
992 }
993
fill_res_counter_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)994 static 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
nldev_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1017 static 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
1047 err = fill_dev_info(msg, device);
1048 if (err)
1049 goto err_free;
1050
1051 nlmsg_end(msg, nlh);
1052
1053 ib_device_put(device);
1054 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1055
1056 err_free:
1057 nlmsg_free(msg);
1058 err:
1059 ib_device_put(device);
1060 return err;
1061 }
1062
nldev_set_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1063 static int nldev_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1064 struct netlink_ext_ack *extack)
1065 {
1066 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1067 struct ib_device *device;
1068 u32 index;
1069 int err;
1070
1071 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1072 nldev_policy, extack);
1073 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1074 return -EINVAL;
1075
1076 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1077 device = ib_device_get_by_index(sock_net(skb->sk), index);
1078 if (!device)
1079 return -EINVAL;
1080
1081 if (tb[RDMA_NLDEV_ATTR_DEV_NAME]) {
1082 char name[IB_DEVICE_NAME_MAX] = {};
1083
1084 nla_strscpy(name, tb[RDMA_NLDEV_ATTR_DEV_NAME],
1085 IB_DEVICE_NAME_MAX);
1086 if (strlen(name) == 0) {
1087 err = -EINVAL;
1088 goto done;
1089 }
1090 err = ib_device_rename(device, name);
1091 goto done;
1092 }
1093
1094 if (tb[RDMA_NLDEV_NET_NS_FD]) {
1095 u32 ns_fd;
1096
1097 ns_fd = nla_get_u32(tb[RDMA_NLDEV_NET_NS_FD]);
1098 err = ib_device_set_netns_put(skb, device, ns_fd);
1099 goto put_done;
1100 }
1101
1102 if (tb[RDMA_NLDEV_ATTR_DEV_DIM]) {
1103 u8 use_dim;
1104
1105 use_dim = nla_get_u8(tb[RDMA_NLDEV_ATTR_DEV_DIM]);
1106 err = ib_device_set_dim(device, use_dim);
1107 goto done;
1108 }
1109
1110 done:
1111 ib_device_put(device);
1112 put_done:
1113 return err;
1114 }
1115
_nldev_get_dumpit(struct ib_device * device,struct sk_buff * skb,struct netlink_callback * cb,unsigned int idx)1116 static int _nldev_get_dumpit(struct ib_device *device,
1117 struct sk_buff *skb,
1118 struct netlink_callback *cb,
1119 unsigned int idx)
1120 {
1121 int start = cb->args[0];
1122 struct nlmsghdr *nlh;
1123
1124 if (idx < start)
1125 return 0;
1126
1127 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
1128 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
1129 0, NLM_F_MULTI);
1130
1131 if (fill_dev_info(skb, device)) {
1132 nlmsg_cancel(skb, nlh);
1133 goto out;
1134 }
1135
1136 nlmsg_end(skb, nlh);
1137
1138 idx++;
1139
1140 out: cb->args[0] = idx;
1141 return skb->len;
1142 }
1143
nldev_get_dumpit(struct sk_buff * skb,struct netlink_callback * cb)1144 static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
1145 {
1146 /*
1147 * There is no need to take lock, because
1148 * we are relying on ib_core's locking.
1149 */
1150 return ib_enum_all_devs(_nldev_get_dumpit, skb, cb);
1151 }
1152
nldev_port_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1153 static int nldev_port_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1154 struct netlink_ext_ack *extack)
1155 {
1156 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1157 struct ib_device *device;
1158 struct sk_buff *msg;
1159 u32 index;
1160 u32 port;
1161 int err;
1162
1163 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1164 nldev_policy, extack);
1165 if (err ||
1166 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
1167 !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
1168 return -EINVAL;
1169
1170 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1171 device = ib_device_get_by_index(sock_net(skb->sk), index);
1172 if (!device)
1173 return -EINVAL;
1174
1175 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1176 if (!rdma_is_port_valid(device, port)) {
1177 err = -EINVAL;
1178 goto err;
1179 }
1180
1181 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1182 if (!msg) {
1183 err = -ENOMEM;
1184 goto err;
1185 }
1186
1187 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1188 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
1189 0, 0);
1190
1191 err = fill_port_info(msg, device, port, sock_net(skb->sk));
1192 if (err)
1193 goto err_free;
1194
1195 nlmsg_end(msg, nlh);
1196 ib_device_put(device);
1197
1198 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1199
1200 err_free:
1201 nlmsg_free(msg);
1202 err:
1203 ib_device_put(device);
1204 return err;
1205 }
1206
nldev_port_get_dumpit(struct sk_buff * skb,struct netlink_callback * cb)1207 static int nldev_port_get_dumpit(struct sk_buff *skb,
1208 struct netlink_callback *cb)
1209 {
1210 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1211 struct ib_device *device;
1212 int start = cb->args[0];
1213 struct nlmsghdr *nlh;
1214 u32 idx = 0;
1215 u32 ifindex;
1216 int err;
1217 unsigned int p;
1218
1219 err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1220 nldev_policy, NULL);
1221 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1222 return -EINVAL;
1223
1224 ifindex = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1225 device = ib_device_get_by_index(sock_net(skb->sk), ifindex);
1226 if (!device)
1227 return -EINVAL;
1228
1229 rdma_for_each_port (device, p) {
1230 /*
1231 * The dumpit function returns all information from specific
1232 * index. This specific index is taken from the netlink
1233 * messages request sent by user and it is available
1234 * in cb->args[0].
1235 *
1236 * Usually, the user doesn't fill this field and it causes
1237 * to return everything.
1238 *
1239 */
1240 if (idx < start) {
1241 idx++;
1242 continue;
1243 }
1244
1245 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid,
1246 cb->nlh->nlmsg_seq,
1247 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1248 RDMA_NLDEV_CMD_PORT_GET),
1249 0, NLM_F_MULTI);
1250
1251 if (fill_port_info(skb, device, p, sock_net(skb->sk))) {
1252 nlmsg_cancel(skb, nlh);
1253 goto out;
1254 }
1255 idx++;
1256 nlmsg_end(skb, nlh);
1257 }
1258
1259 out:
1260 ib_device_put(device);
1261 cb->args[0] = idx;
1262 return skb->len;
1263 }
1264
nldev_res_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1265 static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1266 struct netlink_ext_ack *extack)
1267 {
1268 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1269 struct ib_device *device;
1270 struct sk_buff *msg;
1271 u32 index;
1272 int ret;
1273
1274 ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1275 nldev_policy, extack);
1276 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1277 return -EINVAL;
1278
1279 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1280 device = ib_device_get_by_index(sock_net(skb->sk), index);
1281 if (!device)
1282 return -EINVAL;
1283
1284 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1285 if (!msg) {
1286 ret = -ENOMEM;
1287 goto err;
1288 }
1289
1290 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1291 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
1292 0, 0);
1293
1294 ret = fill_res_info(msg, device);
1295 if (ret)
1296 goto err_free;
1297
1298 nlmsg_end(msg, nlh);
1299 ib_device_put(device);
1300 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1301
1302 err_free:
1303 nlmsg_free(msg);
1304 err:
1305 ib_device_put(device);
1306 return ret;
1307 }
1308
_nldev_res_get_dumpit(struct ib_device * device,struct sk_buff * skb,struct netlink_callback * cb,unsigned int idx)1309 static int _nldev_res_get_dumpit(struct ib_device *device,
1310 struct sk_buff *skb,
1311 struct netlink_callback *cb,
1312 unsigned int idx)
1313 {
1314 int start = cb->args[0];
1315 struct nlmsghdr *nlh;
1316
1317 if (idx < start)
1318 return 0;
1319
1320 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
1321 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
1322 0, NLM_F_MULTI);
1323
1324 if (fill_res_info(skb, device)) {
1325 nlmsg_cancel(skb, nlh);
1326 goto out;
1327 }
1328 nlmsg_end(skb, nlh);
1329
1330 idx++;
1331
1332 out:
1333 cb->args[0] = idx;
1334 return skb->len;
1335 }
1336
nldev_res_get_dumpit(struct sk_buff * skb,struct netlink_callback * cb)1337 static int nldev_res_get_dumpit(struct sk_buff *skb,
1338 struct netlink_callback *cb)
1339 {
1340 return ib_enum_all_devs(_nldev_res_get_dumpit, skb, cb);
1341 }
1342
1343 struct nldev_fill_res_entry {
1344 enum rdma_nldev_attr nldev_attr;
1345 u8 flags;
1346 u32 entry;
1347 u32 id;
1348 };
1349
1350 enum nldev_res_flags {
1351 NLDEV_PER_DEV = 1 << 0,
1352 };
1353
1354 static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
1355 [RDMA_RESTRACK_QP] = {
1356 .nldev_attr = RDMA_NLDEV_ATTR_RES_QP,
1357 .entry = RDMA_NLDEV_ATTR_RES_QP_ENTRY,
1358 .id = RDMA_NLDEV_ATTR_RES_LQPN,
1359 },
1360 [RDMA_RESTRACK_CM_ID] = {
1361 .nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID,
1362 .entry = RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY,
1363 .id = RDMA_NLDEV_ATTR_RES_CM_IDN,
1364 },
1365 [RDMA_RESTRACK_CQ] = {
1366 .nldev_attr = RDMA_NLDEV_ATTR_RES_CQ,
1367 .flags = NLDEV_PER_DEV,
1368 .entry = RDMA_NLDEV_ATTR_RES_CQ_ENTRY,
1369 .id = RDMA_NLDEV_ATTR_RES_CQN,
1370 },
1371 [RDMA_RESTRACK_MR] = {
1372 .nldev_attr = RDMA_NLDEV_ATTR_RES_MR,
1373 .flags = NLDEV_PER_DEV,
1374 .entry = RDMA_NLDEV_ATTR_RES_MR_ENTRY,
1375 .id = RDMA_NLDEV_ATTR_RES_MRN,
1376 },
1377 [RDMA_RESTRACK_PD] = {
1378 .nldev_attr = RDMA_NLDEV_ATTR_RES_PD,
1379 .flags = NLDEV_PER_DEV,
1380 .entry = RDMA_NLDEV_ATTR_RES_PD_ENTRY,
1381 .id = RDMA_NLDEV_ATTR_RES_PDN,
1382 },
1383 [RDMA_RESTRACK_COUNTER] = {
1384 .nldev_attr = RDMA_NLDEV_ATTR_STAT_COUNTER,
1385 .entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY,
1386 .id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID,
1387 },
1388 [RDMA_RESTRACK_CTX] = {
1389 .nldev_attr = RDMA_NLDEV_ATTR_RES_CTX,
1390 .flags = NLDEV_PER_DEV,
1391 .entry = RDMA_NLDEV_ATTR_RES_CTX_ENTRY,
1392 .id = RDMA_NLDEV_ATTR_RES_CTXN,
1393 },
1394 [RDMA_RESTRACK_SRQ] = {
1395 .nldev_attr = RDMA_NLDEV_ATTR_RES_SRQ,
1396 .flags = NLDEV_PER_DEV,
1397 .entry = RDMA_NLDEV_ATTR_RES_SRQ_ENTRY,
1398 .id = RDMA_NLDEV_ATTR_RES_SRQN,
1399 },
1400
1401 };
1402
res_get_common_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack,enum rdma_restrack_type res_type,res_fill_func_t fill_func)1403 static int res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1404 struct netlink_ext_ack *extack,
1405 enum rdma_restrack_type res_type,
1406 res_fill_func_t fill_func)
1407 {
1408 const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
1409 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1410 struct rdma_restrack_entry *res;
1411 struct ib_device *device;
1412 u32 index, id, port = 0;
1413 bool has_cap_net_admin;
1414 struct sk_buff *msg;
1415 int ret;
1416
1417 ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1418 nldev_policy, extack);
1419 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !fe->id || !tb[fe->id])
1420 return -EINVAL;
1421
1422 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1423 device = ib_device_get_by_index(sock_net(skb->sk), index);
1424 if (!device)
1425 return -EINVAL;
1426
1427 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1428 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1429 if (!rdma_is_port_valid(device, port)) {
1430 ret = -EINVAL;
1431 goto err;
1432 }
1433 }
1434
1435 if ((port && fe->flags & NLDEV_PER_DEV) ||
1436 (!port && ~fe->flags & NLDEV_PER_DEV)) {
1437 ret = -EINVAL;
1438 goto err;
1439 }
1440
1441 id = nla_get_u32(tb[fe->id]);
1442 res = rdma_restrack_get_byid(device, res_type, id);
1443 if (IS_ERR(res)) {
1444 ret = PTR_ERR(res);
1445 goto err;
1446 }
1447
1448 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1449 if (!msg) {
1450 ret = -ENOMEM;
1451 goto err_get;
1452 }
1453
1454 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1455 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1456 RDMA_NL_GET_OP(nlh->nlmsg_type)),
1457 0, 0);
1458
1459 if (fill_nldev_handle(msg, device)) {
1460 ret = -EMSGSIZE;
1461 goto err_free;
1462 }
1463
1464 has_cap_net_admin = netlink_capable(skb, CAP_NET_ADMIN);
1465
1466 ret = fill_func(msg, has_cap_net_admin, res, port);
1467 if (ret)
1468 goto err_free;
1469
1470 rdma_restrack_put(res);
1471 nlmsg_end(msg, nlh);
1472 ib_device_put(device);
1473 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1474
1475 err_free:
1476 nlmsg_free(msg);
1477 err_get:
1478 rdma_restrack_put(res);
1479 err:
1480 ib_device_put(device);
1481 return ret;
1482 }
1483
res_get_common_dumpit(struct sk_buff * skb,struct netlink_callback * cb,enum rdma_restrack_type res_type,res_fill_func_t fill_func)1484 static int res_get_common_dumpit(struct sk_buff *skb,
1485 struct netlink_callback *cb,
1486 enum rdma_restrack_type res_type,
1487 res_fill_func_t fill_func)
1488 {
1489 const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
1490 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1491 struct rdma_restrack_entry *res;
1492 struct rdma_restrack_root *rt;
1493 int err, ret = 0, idx = 0;
1494 struct nlattr *table_attr;
1495 struct nlattr *entry_attr;
1496 struct ib_device *device;
1497 int start = cb->args[0];
1498 bool has_cap_net_admin;
1499 struct nlmsghdr *nlh;
1500 unsigned long id;
1501 u32 index, port = 0;
1502 bool filled = false;
1503
1504 err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1505 nldev_policy, NULL);
1506 /*
1507 * Right now, we are expecting the device index to get res information,
1508 * but it is possible to extend this code to return all devices in
1509 * one shot by checking the existence of RDMA_NLDEV_ATTR_DEV_INDEX.
1510 * if it doesn't exist, we will iterate over all devices.
1511 *
1512 * But it is not needed for now.
1513 */
1514 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1515 return -EINVAL;
1516
1517 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1518 device = ib_device_get_by_index(sock_net(skb->sk), index);
1519 if (!device)
1520 return -EINVAL;
1521
1522 /*
1523 * If no PORT_INDEX is supplied, we will return all QPs from that device
1524 */
1525 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1526 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1527 if (!rdma_is_port_valid(device, port)) {
1528 ret = -EINVAL;
1529 goto err_index;
1530 }
1531 }
1532
1533 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
1534 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1535 RDMA_NL_GET_OP(cb->nlh->nlmsg_type)),
1536 0, NLM_F_MULTI);
1537
1538 if (fill_nldev_handle(skb, device)) {
1539 ret = -EMSGSIZE;
1540 goto err;
1541 }
1542
1543 table_attr = nla_nest_start_noflag(skb, fe->nldev_attr);
1544 if (!table_attr) {
1545 ret = -EMSGSIZE;
1546 goto err;
1547 }
1548
1549 has_cap_net_admin = netlink_capable(cb->skb, CAP_NET_ADMIN);
1550
1551 rt = &device->res[res_type];
1552 xa_lock(&rt->xa);
1553 /*
1554 * FIXME: if the skip ahead is something common this loop should
1555 * use xas_for_each & xas_pause to optimize, we can have a lot of
1556 * objects.
1557 */
1558 xa_for_each(&rt->xa, id, res) {
1559 if (idx < start || !rdma_restrack_get(res))
1560 goto next;
1561
1562 xa_unlock(&rt->xa);
1563
1564 filled = true;
1565
1566 entry_attr = nla_nest_start_noflag(skb, fe->entry);
1567 if (!entry_attr) {
1568 ret = -EMSGSIZE;
1569 rdma_restrack_put(res);
1570 goto msg_full;
1571 }
1572
1573 ret = fill_func(skb, has_cap_net_admin, res, port);
1574
1575 rdma_restrack_put(res);
1576
1577 if (ret) {
1578 nla_nest_cancel(skb, entry_attr);
1579 if (ret == -EMSGSIZE)
1580 goto msg_full;
1581 if (ret == -EAGAIN)
1582 goto again;
1583 goto res_err;
1584 }
1585 nla_nest_end(skb, entry_attr);
1586 again: xa_lock(&rt->xa);
1587 next: idx++;
1588 }
1589 xa_unlock(&rt->xa);
1590
1591 msg_full:
1592 nla_nest_end(skb, table_attr);
1593 nlmsg_end(skb, nlh);
1594 cb->args[0] = idx;
1595
1596 /*
1597 * No more entries to fill, cancel the message and
1598 * return 0 to mark end of dumpit.
1599 */
1600 if (!filled)
1601 goto err;
1602
1603 ib_device_put(device);
1604 return skb->len;
1605
1606 res_err:
1607 nla_nest_cancel(skb, table_attr);
1608
1609 err:
1610 nlmsg_cancel(skb, nlh);
1611
1612 err_index:
1613 ib_device_put(device);
1614 return ret;
1615 }
1616
1617 #define RES_GET_FUNCS(name, type) \
1618 static int nldev_res_get_##name##_dumpit(struct sk_buff *skb, \
1619 struct netlink_callback *cb) \
1620 { \
1621 return res_get_common_dumpit(skb, cb, type, \
1622 fill_res_##name##_entry); \
1623 } \
1624 static int nldev_res_get_##name##_doit(struct sk_buff *skb, \
1625 struct nlmsghdr *nlh, \
1626 struct netlink_ext_ack *extack) \
1627 { \
1628 return res_get_common_doit(skb, nlh, extack, type, \
1629 fill_res_##name##_entry); \
1630 }
1631
1632 RES_GET_FUNCS(qp, RDMA_RESTRACK_QP);
1633 RES_GET_FUNCS(qp_raw, RDMA_RESTRACK_QP);
1634 RES_GET_FUNCS(cm_id, RDMA_RESTRACK_CM_ID);
1635 RES_GET_FUNCS(cq, RDMA_RESTRACK_CQ);
1636 RES_GET_FUNCS(cq_raw, RDMA_RESTRACK_CQ);
1637 RES_GET_FUNCS(pd, RDMA_RESTRACK_PD);
1638 RES_GET_FUNCS(mr, RDMA_RESTRACK_MR);
1639 RES_GET_FUNCS(mr_raw, RDMA_RESTRACK_MR);
1640 RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER);
1641 RES_GET_FUNCS(ctx, RDMA_RESTRACK_CTX);
1642 RES_GET_FUNCS(srq, RDMA_RESTRACK_SRQ);
1643
1644 static LIST_HEAD(link_ops);
1645 static DECLARE_RWSEM(link_ops_rwsem);
1646
link_ops_get(const char * type)1647 static const struct rdma_link_ops *link_ops_get(const char *type)
1648 {
1649 const struct rdma_link_ops *ops;
1650
1651 list_for_each_entry(ops, &link_ops, list) {
1652 if (!strcmp(ops->type, type))
1653 goto out;
1654 }
1655 ops = NULL;
1656 out:
1657 return ops;
1658 }
1659
rdma_link_register(struct rdma_link_ops * ops)1660 void rdma_link_register(struct rdma_link_ops *ops)
1661 {
1662 down_write(&link_ops_rwsem);
1663 if (WARN_ON_ONCE(link_ops_get(ops->type)))
1664 goto out;
1665 list_add(&ops->list, &link_ops);
1666 out:
1667 up_write(&link_ops_rwsem);
1668 }
1669 EXPORT_SYMBOL(rdma_link_register);
1670
rdma_link_unregister(struct rdma_link_ops * ops)1671 void rdma_link_unregister(struct rdma_link_ops *ops)
1672 {
1673 down_write(&link_ops_rwsem);
1674 list_del(&ops->list);
1675 up_write(&link_ops_rwsem);
1676 }
1677 EXPORT_SYMBOL(rdma_link_unregister);
1678
nldev_newlink(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1679 static int nldev_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
1680 struct netlink_ext_ack *extack)
1681 {
1682 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1683 char ibdev_name[IB_DEVICE_NAME_MAX];
1684 const struct rdma_link_ops *ops;
1685 char ndev_name[IFNAMSIZ];
1686 struct net_device *ndev;
1687 char type[IFNAMSIZ];
1688 int err;
1689
1690 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1691 nldev_policy, extack);
1692 if (err || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
1693 !tb[RDMA_NLDEV_ATTR_LINK_TYPE] || !tb[RDMA_NLDEV_ATTR_NDEV_NAME])
1694 return -EINVAL;
1695
1696 nla_strscpy(ibdev_name, tb[RDMA_NLDEV_ATTR_DEV_NAME],
1697 sizeof(ibdev_name));
1698 if (strchr(ibdev_name, '%') || strlen(ibdev_name) == 0)
1699 return -EINVAL;
1700
1701 nla_strscpy(type, tb[RDMA_NLDEV_ATTR_LINK_TYPE], sizeof(type));
1702 nla_strscpy(ndev_name, tb[RDMA_NLDEV_ATTR_NDEV_NAME],
1703 sizeof(ndev_name));
1704
1705 ndev = dev_get_by_name(sock_net(skb->sk), ndev_name);
1706 if (!ndev)
1707 return -ENODEV;
1708
1709 down_read(&link_ops_rwsem);
1710 ops = link_ops_get(type);
1711 #ifdef CONFIG_MODULES
1712 if (!ops) {
1713 up_read(&link_ops_rwsem);
1714 request_module("rdma-link-%s", type);
1715 down_read(&link_ops_rwsem);
1716 ops = link_ops_get(type);
1717 }
1718 #endif
1719 err = ops ? ops->newlink(ibdev_name, ndev) : -EINVAL;
1720 up_read(&link_ops_rwsem);
1721 dev_put(ndev);
1722
1723 return err;
1724 }
1725
nldev_dellink(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1726 static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
1727 struct netlink_ext_ack *extack)
1728 {
1729 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1730 struct ib_device *device;
1731 u32 index;
1732 int err;
1733
1734 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1735 nldev_policy, extack);
1736 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1737 return -EINVAL;
1738
1739 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1740 device = ib_device_get_by_index(sock_net(skb->sk), index);
1741 if (!device)
1742 return -EINVAL;
1743
1744 if (!(device->attrs.kernel_cap_flags & IBK_ALLOW_USER_UNREG)) {
1745 ib_device_put(device);
1746 return -EINVAL;
1747 }
1748
1749 ib_unregister_device_and_put(device);
1750 return 0;
1751 }
1752
nldev_get_chardev(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1753 static int nldev_get_chardev(struct sk_buff *skb, struct nlmsghdr *nlh,
1754 struct netlink_ext_ack *extack)
1755 {
1756 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1757 char client_name[RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE];
1758 struct ib_client_nl_info data = {};
1759 struct ib_device *ibdev = NULL;
1760 struct sk_buff *msg;
1761 u32 index;
1762 int err;
1763
1764 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy,
1765 extack);
1766 if (err || !tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE])
1767 return -EINVAL;
1768
1769 nla_strscpy(client_name, tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE],
1770 sizeof(client_name));
1771
1772 if (tb[RDMA_NLDEV_ATTR_DEV_INDEX]) {
1773 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1774 ibdev = ib_device_get_by_index(sock_net(skb->sk), index);
1775 if (!ibdev)
1776 return -EINVAL;
1777
1778 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1779 data.port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1780 if (!rdma_is_port_valid(ibdev, data.port)) {
1781 err = -EINVAL;
1782 goto out_put;
1783 }
1784 } else {
1785 data.port = -1;
1786 }
1787 } else if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1788 return -EINVAL;
1789 }
1790
1791 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1792 if (!msg) {
1793 err = -ENOMEM;
1794 goto out_put;
1795 }
1796 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1797 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1798 RDMA_NLDEV_CMD_GET_CHARDEV),
1799 0, 0);
1800
1801 data.nl_msg = msg;
1802 err = ib_get_client_nl_info(ibdev, client_name, &data);
1803 if (err)
1804 goto out_nlmsg;
1805
1806 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV,
1807 huge_encode_dev(data.cdev->devt),
1808 RDMA_NLDEV_ATTR_PAD);
1809 if (err)
1810 goto out_data;
1811 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV_ABI, data.abi,
1812 RDMA_NLDEV_ATTR_PAD);
1813 if (err)
1814 goto out_data;
1815 if (nla_put_string(msg, RDMA_NLDEV_ATTR_CHARDEV_NAME,
1816 dev_name(data.cdev))) {
1817 err = -EMSGSIZE;
1818 goto out_data;
1819 }
1820
1821 nlmsg_end(msg, nlh);
1822 put_device(data.cdev);
1823 if (ibdev)
1824 ib_device_put(ibdev);
1825 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1826
1827 out_data:
1828 put_device(data.cdev);
1829 out_nlmsg:
1830 nlmsg_free(msg);
1831 out_put:
1832 if (ibdev)
1833 ib_device_put(ibdev);
1834 return err;
1835 }
1836
nldev_sys_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1837 static int nldev_sys_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1838 struct netlink_ext_ack *extack)
1839 {
1840 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1841 struct sk_buff *msg;
1842 int err;
1843
1844 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1845 nldev_policy, extack);
1846 if (err)
1847 return err;
1848
1849 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1850 if (!msg)
1851 return -ENOMEM;
1852
1853 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1854 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1855 RDMA_NLDEV_CMD_SYS_GET),
1856 0, 0);
1857
1858 err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_NETNS_MODE,
1859 (u8)ib_devices_shared_netns);
1860 if (err) {
1861 nlmsg_free(msg);
1862 return err;
1863 }
1864
1865 /*
1866 * Copy-on-fork is supported.
1867 * See commits:
1868 * 70e806e4e645 ("mm: Do early cow for pinned pages during fork() for ptes")
1869 * 4eae4efa2c29 ("hugetlb: do early cow when page pinned on src mm")
1870 * for more details. Don't backport this without them.
1871 *
1872 * Return value ignored on purpose, assume copy-on-fork is not
1873 * supported in case of failure.
1874 */
1875 nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK, 1);
1876
1877 nlmsg_end(msg, nlh);
1878 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1879 }
1880
nldev_set_sys_set_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1881 static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1882 struct netlink_ext_ack *extack)
1883 {
1884 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1885 u8 enable;
1886 int err;
1887
1888 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1889 nldev_policy, extack);
1890 if (err || !tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE])
1891 return -EINVAL;
1892
1893 enable = nla_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]);
1894 /* Only 0 and 1 are supported */
1895 if (enable > 1)
1896 return -EINVAL;
1897
1898 err = rdma_compatdev_set(enable);
1899 return err;
1900 }
1901
nldev_stat_set_mode_doit(struct sk_buff * msg,struct netlink_ext_ack * extack,struct nlattr * tb[],struct ib_device * device,u32 port)1902 static int nldev_stat_set_mode_doit(struct sk_buff *msg,
1903 struct netlink_ext_ack *extack,
1904 struct nlattr *tb[],
1905 struct ib_device *device, u32 port)
1906 {
1907 u32 mode, mask = 0, qpn, cntn = 0;
1908 int ret;
1909
1910 /* Currently only counter for QP is supported */
1911 if (!tb[RDMA_NLDEV_ATTR_STAT_RES] ||
1912 nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP)
1913 return -EINVAL;
1914
1915 mode = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_MODE]);
1916 if (mode == RDMA_COUNTER_MODE_AUTO) {
1917 if (tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK])
1918 mask = nla_get_u32(
1919 tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]);
1920 return rdma_counter_set_auto_mode(device, port, mask, extack);
1921 }
1922
1923 if (!tb[RDMA_NLDEV_ATTR_RES_LQPN])
1924 return -EINVAL;
1925
1926 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]);
1927 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) {
1928 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);
1929 ret = rdma_counter_bind_qpn(device, port, qpn, cntn);
1930 if (ret)
1931 return ret;
1932 } else {
1933 ret = rdma_counter_bind_qpn_alloc(device, port, qpn, &cntn);
1934 if (ret)
1935 return ret;
1936 }
1937
1938 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) ||
1939 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) {
1940 ret = -EMSGSIZE;
1941 goto err_fill;
1942 }
1943
1944 return 0;
1945
1946 err_fill:
1947 rdma_counter_unbind_qpn(device, port, qpn, cntn);
1948 return ret;
1949 }
1950
nldev_stat_set_counter_dynamic_doit(struct nlattr * tb[],struct ib_device * device,u32 port)1951 static int nldev_stat_set_counter_dynamic_doit(struct nlattr *tb[],
1952 struct ib_device *device,
1953 u32 port)
1954 {
1955 struct rdma_hw_stats *stats;
1956 struct nlattr *entry_attr;
1957 unsigned long *target;
1958 int rem, i, ret = 0;
1959 u32 index;
1960
1961 stats = ib_get_hw_stats_port(device, port);
1962 if (!stats)
1963 return -EINVAL;
1964
1965 target = kcalloc(BITS_TO_LONGS(stats->num_counters),
1966 sizeof(*stats->is_disabled), GFP_KERNEL);
1967 if (!target)
1968 return -ENOMEM;
1969
1970 nla_for_each_nested(entry_attr, tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS],
1971 rem) {
1972 index = nla_get_u32(entry_attr);
1973 if ((index >= stats->num_counters) ||
1974 !(stats->descs[index].flags & IB_STAT_FLAG_OPTIONAL)) {
1975 ret = -EINVAL;
1976 goto out;
1977 }
1978
1979 set_bit(index, target);
1980 }
1981
1982 for (i = 0; i < stats->num_counters; i++) {
1983 if (!(stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL))
1984 continue;
1985
1986 ret = rdma_counter_modify(device, port, i, test_bit(i, target));
1987 if (ret)
1988 goto out;
1989 }
1990
1991 out:
1992 kfree(target);
1993 return ret;
1994 }
1995
nldev_stat_set_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1996 static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1997 struct netlink_ext_ack *extack)
1998 {
1999 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2000 struct ib_device *device;
2001 struct sk_buff *msg;
2002 u32 index, port;
2003 int ret;
2004
2005 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy,
2006 extack);
2007 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
2008 !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2009 return -EINVAL;
2010
2011 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2012 device = ib_device_get_by_index(sock_net(skb->sk), index);
2013 if (!device)
2014 return -EINVAL;
2015
2016 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2017 if (!rdma_is_port_valid(device, port)) {
2018 ret = -EINVAL;
2019 goto err_put_device;
2020 }
2021
2022 if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] &&
2023 !tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS]) {
2024 ret = -EINVAL;
2025 goto err_put_device;
2026 }
2027
2028 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2029 if (!msg) {
2030 ret = -ENOMEM;
2031 goto err_put_device;
2032 }
2033 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2034 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2035 RDMA_NLDEV_CMD_STAT_SET),
2036 0, 0);
2037 if (fill_nldev_handle(msg, device) ||
2038 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) {
2039 ret = -EMSGSIZE;
2040 goto err_free_msg;
2041 }
2042
2043 if (tb[RDMA_NLDEV_ATTR_STAT_MODE]) {
2044 ret = nldev_stat_set_mode_doit(msg, extack, tb, device, port);
2045 if (ret)
2046 goto err_free_msg;
2047 }
2048
2049 if (tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS]) {
2050 ret = nldev_stat_set_counter_dynamic_doit(tb, device, port);
2051 if (ret)
2052 goto err_free_msg;
2053 }
2054
2055 nlmsg_end(msg, nlh);
2056 ib_device_put(device);
2057 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2058
2059 err_free_msg:
2060 nlmsg_free(msg);
2061 err_put_device:
2062 ib_device_put(device);
2063 return ret;
2064 }
2065
nldev_stat_del_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)2066 static int nldev_stat_del_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
2067 struct netlink_ext_ack *extack)
2068 {
2069 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2070 struct ib_device *device;
2071 struct sk_buff *msg;
2072 u32 index, port, qpn, cntn;
2073 int ret;
2074
2075 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2076 nldev_policy, extack);
2077 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] ||
2078 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX] ||
2079 !tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID] ||
2080 !tb[RDMA_NLDEV_ATTR_RES_LQPN])
2081 return -EINVAL;
2082
2083 if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP)
2084 return -EINVAL;
2085
2086 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2087 device = ib_device_get_by_index(sock_net(skb->sk), index);
2088 if (!device)
2089 return -EINVAL;
2090
2091 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2092 if (!rdma_is_port_valid(device, port)) {
2093 ret = -EINVAL;
2094 goto err;
2095 }
2096
2097 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2098 if (!msg) {
2099 ret = -ENOMEM;
2100 goto err;
2101 }
2102 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2103 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2104 RDMA_NLDEV_CMD_STAT_SET),
2105 0, 0);
2106
2107 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);
2108 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]);
2109 if (fill_nldev_handle(msg, device) ||
2110 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) ||
2111 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) ||
2112 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) {
2113 ret = -EMSGSIZE;
2114 goto err_fill;
2115 }
2116
2117 ret = rdma_counter_unbind_qpn(device, port, qpn, cntn);
2118 if (ret)
2119 goto err_fill;
2120
2121 nlmsg_end(msg, nlh);
2122 ib_device_put(device);
2123 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2124
2125 err_fill:
2126 nlmsg_free(msg);
2127 err:
2128 ib_device_put(device);
2129 return ret;
2130 }
2131
stat_get_doit_default_counter(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack,struct nlattr * tb[])2132 static int stat_get_doit_default_counter(struct sk_buff *skb,
2133 struct nlmsghdr *nlh,
2134 struct netlink_ext_ack *extack,
2135 struct nlattr *tb[])
2136 {
2137 struct rdma_hw_stats *stats;
2138 struct nlattr *table_attr;
2139 struct ib_device *device;
2140 int ret, num_cnts, i;
2141 struct sk_buff *msg;
2142 u32 index, port;
2143 u64 v;
2144
2145 if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2146 return -EINVAL;
2147
2148 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2149 device = ib_device_get_by_index(sock_net(skb->sk), index);
2150 if (!device)
2151 return -EINVAL;
2152
2153 if (!device->ops.alloc_hw_port_stats || !device->ops.get_hw_stats) {
2154 ret = -EINVAL;
2155 goto err;
2156 }
2157
2158 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2159 stats = ib_get_hw_stats_port(device, port);
2160 if (!stats) {
2161 ret = -EINVAL;
2162 goto err;
2163 }
2164
2165 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2166 if (!msg) {
2167 ret = -ENOMEM;
2168 goto err;
2169 }
2170
2171 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2172 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2173 RDMA_NLDEV_CMD_STAT_GET),
2174 0, 0);
2175
2176 if (fill_nldev_handle(msg, device) ||
2177 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) {
2178 ret = -EMSGSIZE;
2179 goto err_msg;
2180 }
2181
2182 mutex_lock(&stats->lock);
2183
2184 num_cnts = device->ops.get_hw_stats(device, stats, port, 0);
2185 if (num_cnts < 0) {
2186 ret = -EINVAL;
2187 goto err_stats;
2188 }
2189
2190 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
2191 if (!table_attr) {
2192 ret = -EMSGSIZE;
2193 goto err_stats;
2194 }
2195 for (i = 0; i < num_cnts; i++) {
2196 if (test_bit(i, stats->is_disabled))
2197 continue;
2198
2199 v = stats->value[i] +
2200 rdma_counter_get_hwstat_value(device, port, i);
2201 if (rdma_nl_stat_hwcounter_entry(msg,
2202 stats->descs[i].name, v)) {
2203 ret = -EMSGSIZE;
2204 goto err_table;
2205 }
2206 }
2207 nla_nest_end(msg, table_attr);
2208
2209 mutex_unlock(&stats->lock);
2210 nlmsg_end(msg, nlh);
2211 ib_device_put(device);
2212 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2213
2214 err_table:
2215 nla_nest_cancel(msg, table_attr);
2216 err_stats:
2217 mutex_unlock(&stats->lock);
2218 err_msg:
2219 nlmsg_free(msg);
2220 err:
2221 ib_device_put(device);
2222 return ret;
2223 }
2224
stat_get_doit_qp(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack,struct nlattr * tb[])2225 static int stat_get_doit_qp(struct sk_buff *skb, struct nlmsghdr *nlh,
2226 struct netlink_ext_ack *extack, struct nlattr *tb[])
2227
2228 {
2229 static enum rdma_nl_counter_mode mode;
2230 static enum rdma_nl_counter_mask mask;
2231 struct ib_device *device;
2232 struct sk_buff *msg;
2233 u32 index, port;
2234 int ret;
2235
2236 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID])
2237 return nldev_res_get_counter_doit(skb, nlh, extack);
2238
2239 if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] ||
2240 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2241 return -EINVAL;
2242
2243 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2244 device = ib_device_get_by_index(sock_net(skb->sk), index);
2245 if (!device)
2246 return -EINVAL;
2247
2248 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2249 if (!rdma_is_port_valid(device, port)) {
2250 ret = -EINVAL;
2251 goto err;
2252 }
2253
2254 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2255 if (!msg) {
2256 ret = -ENOMEM;
2257 goto err;
2258 }
2259
2260 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2261 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2262 RDMA_NLDEV_CMD_STAT_GET),
2263 0, 0);
2264
2265 ret = rdma_counter_get_mode(device, port, &mode, &mask);
2266 if (ret)
2267 goto err_msg;
2268
2269 if (fill_nldev_handle(msg, device) ||
2270 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) ||
2271 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, mode)) {
2272 ret = -EMSGSIZE;
2273 goto err_msg;
2274 }
2275
2276 if ((mode == RDMA_COUNTER_MODE_AUTO) &&
2277 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, mask)) {
2278 ret = -EMSGSIZE;
2279 goto err_msg;
2280 }
2281
2282 nlmsg_end(msg, nlh);
2283 ib_device_put(device);
2284 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2285
2286 err_msg:
2287 nlmsg_free(msg);
2288 err:
2289 ib_device_put(device);
2290 return ret;
2291 }
2292
nldev_stat_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)2293 static int nldev_stat_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
2294 struct netlink_ext_ack *extack)
2295 {
2296 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2297 int ret;
2298
2299 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2300 nldev_policy, extack);
2301 if (ret)
2302 return -EINVAL;
2303
2304 if (!tb[RDMA_NLDEV_ATTR_STAT_RES])
2305 return stat_get_doit_default_counter(skb, nlh, extack, tb);
2306
2307 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) {
2308 case RDMA_NLDEV_ATTR_RES_QP:
2309 ret = stat_get_doit_qp(skb, nlh, extack, tb);
2310 break;
2311 case RDMA_NLDEV_ATTR_RES_MR:
2312 ret = res_get_common_doit(skb, nlh, extack, RDMA_RESTRACK_MR,
2313 fill_stat_mr_entry);
2314 break;
2315 default:
2316 ret = -EINVAL;
2317 break;
2318 }
2319
2320 return ret;
2321 }
2322
nldev_stat_get_dumpit(struct sk_buff * skb,struct netlink_callback * cb)2323 static int nldev_stat_get_dumpit(struct sk_buff *skb,
2324 struct netlink_callback *cb)
2325 {
2326 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2327 int ret;
2328
2329 ret = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2330 nldev_policy, NULL);
2331 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES])
2332 return -EINVAL;
2333
2334 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) {
2335 case RDMA_NLDEV_ATTR_RES_QP:
2336 ret = nldev_res_get_counter_dumpit(skb, cb);
2337 break;
2338 case RDMA_NLDEV_ATTR_RES_MR:
2339 ret = res_get_common_dumpit(skb, cb, RDMA_RESTRACK_MR,
2340 fill_stat_mr_entry);
2341 break;
2342 default:
2343 ret = -EINVAL;
2344 break;
2345 }
2346
2347 return ret;
2348 }
2349
nldev_stat_get_counter_status_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)2350 static int nldev_stat_get_counter_status_doit(struct sk_buff *skb,
2351 struct nlmsghdr *nlh,
2352 struct netlink_ext_ack *extack)
2353 {
2354 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX], *table, *entry;
2355 struct rdma_hw_stats *stats;
2356 struct ib_device *device;
2357 struct sk_buff *msg;
2358 u32 devid, port;
2359 int ret, i;
2360
2361 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2362 nldev_policy, extack);
2363 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
2364 !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2365 return -EINVAL;
2366
2367 devid = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2368 device = ib_device_get_by_index(sock_net(skb->sk), devid);
2369 if (!device)
2370 return -EINVAL;
2371
2372 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2373 if (!rdma_is_port_valid(device, port)) {
2374 ret = -EINVAL;
2375 goto err;
2376 }
2377
2378 stats = ib_get_hw_stats_port(device, port);
2379 if (!stats) {
2380 ret = -EINVAL;
2381 goto err;
2382 }
2383
2384 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2385 if (!msg) {
2386 ret = -ENOMEM;
2387 goto err;
2388 }
2389
2390 nlh = nlmsg_put(
2391 msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2392 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_STAT_GET_STATUS),
2393 0, 0);
2394
2395 ret = -EMSGSIZE;
2396 if (fill_nldev_handle(msg, device) ||
2397 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port))
2398 goto err_msg;
2399
2400 table = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
2401 if (!table)
2402 goto err_msg;
2403
2404 mutex_lock(&stats->lock);
2405 for (i = 0; i < stats->num_counters; i++) {
2406 entry = nla_nest_start(msg,
2407 RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY);
2408 if (!entry)
2409 goto err_msg_table;
2410
2411 if (nla_put_string(msg,
2412 RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME,
2413 stats->descs[i].name) ||
2414 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_INDEX, i))
2415 goto err_msg_entry;
2416
2417 if ((stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) &&
2418 (nla_put_u8(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC,
2419 !test_bit(i, stats->is_disabled))))
2420 goto err_msg_entry;
2421
2422 nla_nest_end(msg, entry);
2423 }
2424 mutex_unlock(&stats->lock);
2425
2426 nla_nest_end(msg, table);
2427 nlmsg_end(msg, nlh);
2428 ib_device_put(device);
2429 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2430
2431 err_msg_entry:
2432 nla_nest_cancel(msg, entry);
2433 err_msg_table:
2434 mutex_unlock(&stats->lock);
2435 nla_nest_cancel(msg, table);
2436 err_msg:
2437 nlmsg_free(msg);
2438 err:
2439 ib_device_put(device);
2440 return ret;
2441 }
2442
2443 static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
2444 [RDMA_NLDEV_CMD_GET] = {
2445 .doit = nldev_get_doit,
2446 .dump = nldev_get_dumpit,
2447 },
2448 [RDMA_NLDEV_CMD_GET_CHARDEV] = {
2449 .doit = nldev_get_chardev,
2450 },
2451 [RDMA_NLDEV_CMD_SET] = {
2452 .doit = nldev_set_doit,
2453 .flags = RDMA_NL_ADMIN_PERM,
2454 },
2455 [RDMA_NLDEV_CMD_NEWLINK] = {
2456 .doit = nldev_newlink,
2457 .flags = RDMA_NL_ADMIN_PERM,
2458 },
2459 [RDMA_NLDEV_CMD_DELLINK] = {
2460 .doit = nldev_dellink,
2461 .flags = RDMA_NL_ADMIN_PERM,
2462 },
2463 [RDMA_NLDEV_CMD_PORT_GET] = {
2464 .doit = nldev_port_get_doit,
2465 .dump = nldev_port_get_dumpit,
2466 },
2467 [RDMA_NLDEV_CMD_RES_GET] = {
2468 .doit = nldev_res_get_doit,
2469 .dump = nldev_res_get_dumpit,
2470 },
2471 [RDMA_NLDEV_CMD_RES_QP_GET] = {
2472 .doit = nldev_res_get_qp_doit,
2473 .dump = nldev_res_get_qp_dumpit,
2474 },
2475 [RDMA_NLDEV_CMD_RES_CM_ID_GET] = {
2476 .doit = nldev_res_get_cm_id_doit,
2477 .dump = nldev_res_get_cm_id_dumpit,
2478 },
2479 [RDMA_NLDEV_CMD_RES_CQ_GET] = {
2480 .doit = nldev_res_get_cq_doit,
2481 .dump = nldev_res_get_cq_dumpit,
2482 },
2483 [RDMA_NLDEV_CMD_RES_MR_GET] = {
2484 .doit = nldev_res_get_mr_doit,
2485 .dump = nldev_res_get_mr_dumpit,
2486 },
2487 [RDMA_NLDEV_CMD_RES_PD_GET] = {
2488 .doit = nldev_res_get_pd_doit,
2489 .dump = nldev_res_get_pd_dumpit,
2490 },
2491 [RDMA_NLDEV_CMD_RES_CTX_GET] = {
2492 .doit = nldev_res_get_ctx_doit,
2493 .dump = nldev_res_get_ctx_dumpit,
2494 },
2495 [RDMA_NLDEV_CMD_RES_SRQ_GET] = {
2496 .doit = nldev_res_get_srq_doit,
2497 .dump = nldev_res_get_srq_dumpit,
2498 },
2499 [RDMA_NLDEV_CMD_SYS_GET] = {
2500 .doit = nldev_sys_get_doit,
2501 },
2502 [RDMA_NLDEV_CMD_SYS_SET] = {
2503 .doit = nldev_set_sys_set_doit,
2504 },
2505 [RDMA_NLDEV_CMD_STAT_SET] = {
2506 .doit = nldev_stat_set_doit,
2507 .flags = RDMA_NL_ADMIN_PERM,
2508 },
2509 [RDMA_NLDEV_CMD_STAT_GET] = {
2510 .doit = nldev_stat_get_doit,
2511 .dump = nldev_stat_get_dumpit,
2512 },
2513 [RDMA_NLDEV_CMD_STAT_DEL] = {
2514 .doit = nldev_stat_del_doit,
2515 .flags = RDMA_NL_ADMIN_PERM,
2516 },
2517 [RDMA_NLDEV_CMD_RES_QP_GET_RAW] = {
2518 .doit = nldev_res_get_qp_raw_doit,
2519 .dump = nldev_res_get_qp_raw_dumpit,
2520 .flags = RDMA_NL_ADMIN_PERM,
2521 },
2522 [RDMA_NLDEV_CMD_RES_CQ_GET_RAW] = {
2523 .doit = nldev_res_get_cq_raw_doit,
2524 .dump = nldev_res_get_cq_raw_dumpit,
2525 .flags = RDMA_NL_ADMIN_PERM,
2526 },
2527 [RDMA_NLDEV_CMD_RES_MR_GET_RAW] = {
2528 .doit = nldev_res_get_mr_raw_doit,
2529 .dump = nldev_res_get_mr_raw_dumpit,
2530 .flags = RDMA_NL_ADMIN_PERM,
2531 },
2532 [RDMA_NLDEV_CMD_STAT_GET_STATUS] = {
2533 .doit = nldev_stat_get_counter_status_doit,
2534 },
2535 };
2536
nldev_init(void)2537 void __init nldev_init(void)
2538 {
2539 rdma_nl_register(RDMA_NL_NLDEV, nldev_cb_table);
2540 }
2541
nldev_exit(void)2542 void nldev_exit(void)
2543 {
2544 rdma_nl_unregister(RDMA_NL_NLDEV);
2545 }
2546
2547 MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5);
2548