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 -EINVAL;
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 0;
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
898 rt = &counter->device->res[RDMA_RESTRACK_QP];
899 xa_lock(&rt->xa);
900 xa_for_each(&rt->xa, id, res) {
901 qp = container_of(res, struct ib_qp, res);
902 if (!qp->counter || (qp->counter->id != counter->id))
903 continue;
904
905 ret = fill_stat_counter_qp_entry(msg, qp->qp_num);
906 if (ret)
907 goto err;
908 }
909
910 xa_unlock(&rt->xa);
911 nla_nest_end(msg, table_attr);
912 return 0;
913
914 err:
915 xa_unlock(&rt->xa);
916 nla_nest_cancel(msg, table_attr);
917 return ret;
918 }
919
rdma_nl_stat_hwcounter_entry(struct sk_buff * msg,const char * name,u64 value)920 int rdma_nl_stat_hwcounter_entry(struct sk_buff *msg, const char *name,
921 u64 value)
922 {
923 struct nlattr *entry_attr;
924
925 entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY);
926 if (!entry_attr)
927 return -EMSGSIZE;
928
929 if (nla_put_string(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME,
930 name))
931 goto err;
932 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE,
933 value, RDMA_NLDEV_ATTR_PAD))
934 goto err;
935
936 nla_nest_end(msg, entry_attr);
937 return 0;
938
939 err:
940 nla_nest_cancel(msg, entry_attr);
941 return -EMSGSIZE;
942 }
943 EXPORT_SYMBOL(rdma_nl_stat_hwcounter_entry);
944
fill_stat_mr_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)945 static int fill_stat_mr_entry(struct sk_buff *msg, bool has_cap_net_admin,
946 struct rdma_restrack_entry *res, uint32_t port)
947 {
948 struct ib_mr *mr = container_of(res, struct ib_mr, res);
949 struct ib_device *dev = mr->pd->device;
950
951 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id))
952 goto err;
953
954 if (dev->ops.fill_stat_mr_entry)
955 return dev->ops.fill_stat_mr_entry(msg, mr);
956 return 0;
957
958 err:
959 return -EMSGSIZE;
960 }
961
fill_stat_counter_hwcounters(struct sk_buff * msg,struct rdma_counter * counter)962 static int fill_stat_counter_hwcounters(struct sk_buff *msg,
963 struct rdma_counter *counter)
964 {
965 struct rdma_hw_stats *st = counter->stats;
966 struct nlattr *table_attr;
967 int i;
968
969 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
970 if (!table_attr)
971 return -EMSGSIZE;
972
973 mutex_lock(&st->lock);
974 for (i = 0; i < st->num_counters; i++) {
975 if (test_bit(i, st->is_disabled))
976 continue;
977 if (rdma_nl_stat_hwcounter_entry(msg, st->descs[i].name,
978 st->value[i]))
979 goto err;
980 }
981 mutex_unlock(&st->lock);
982
983 nla_nest_end(msg, table_attr);
984 return 0;
985
986 err:
987 mutex_unlock(&st->lock);
988 nla_nest_cancel(msg, table_attr);
989 return -EMSGSIZE;
990 }
991
fill_res_counter_entry(struct sk_buff * msg,bool has_cap_net_admin,struct rdma_restrack_entry * res,uint32_t port)992 static int fill_res_counter_entry(struct sk_buff *msg, bool has_cap_net_admin,
993 struct rdma_restrack_entry *res,
994 uint32_t port)
995 {
996 struct rdma_counter *counter =
997 container_of(res, struct rdma_counter, res);
998
999 if (port && port != counter->port)
1000 return -EAGAIN;
1001
1002 /* Dump it even query failed */
1003 rdma_counter_query_stats(counter);
1004
1005 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, counter->port) ||
1006 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, counter->id) ||
1007 fill_stat_counter_mode(msg, counter) ||
1008 fill_stat_counter_qps(msg, counter) ||
1009 fill_stat_counter_hwcounters(msg, counter))
1010 return -EMSGSIZE;
1011
1012 return 0;
1013 }
1014
nldev_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1015 static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1016 struct netlink_ext_ack *extack)
1017 {
1018 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1019 struct ib_device *device;
1020 struct sk_buff *msg;
1021 u32 index;
1022 int err;
1023
1024 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1025 nldev_policy, extack);
1026 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1027 return -EINVAL;
1028
1029 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1030
1031 device = ib_device_get_by_index(sock_net(skb->sk), index);
1032 if (!device)
1033 return -EINVAL;
1034
1035 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1036 if (!msg) {
1037 err = -ENOMEM;
1038 goto err;
1039 }
1040
1041 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1042 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
1043 0, 0);
1044
1045 err = fill_dev_info(msg, device);
1046 if (err)
1047 goto err_free;
1048
1049 nlmsg_end(msg, nlh);
1050
1051 ib_device_put(device);
1052 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1053
1054 err_free:
1055 nlmsg_free(msg);
1056 err:
1057 ib_device_put(device);
1058 return err;
1059 }
1060
nldev_set_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1061 static int nldev_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1062 struct netlink_ext_ack *extack)
1063 {
1064 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1065 struct ib_device *device;
1066 u32 index;
1067 int err;
1068
1069 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1070 nldev_policy, extack);
1071 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1072 return -EINVAL;
1073
1074 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1075 device = ib_device_get_by_index(sock_net(skb->sk), index);
1076 if (!device)
1077 return -EINVAL;
1078
1079 if (tb[RDMA_NLDEV_ATTR_DEV_NAME]) {
1080 char name[IB_DEVICE_NAME_MAX] = {};
1081
1082 nla_strscpy(name, tb[RDMA_NLDEV_ATTR_DEV_NAME],
1083 IB_DEVICE_NAME_MAX);
1084 if (strlen(name) == 0) {
1085 err = -EINVAL;
1086 goto done;
1087 }
1088 err = ib_device_rename(device, name);
1089 goto done;
1090 }
1091
1092 if (tb[RDMA_NLDEV_NET_NS_FD]) {
1093 u32 ns_fd;
1094
1095 ns_fd = nla_get_u32(tb[RDMA_NLDEV_NET_NS_FD]);
1096 err = ib_device_set_netns_put(skb, device, ns_fd);
1097 goto put_done;
1098 }
1099
1100 if (tb[RDMA_NLDEV_ATTR_DEV_DIM]) {
1101 u8 use_dim;
1102
1103 use_dim = nla_get_u8(tb[RDMA_NLDEV_ATTR_DEV_DIM]);
1104 err = ib_device_set_dim(device, use_dim);
1105 goto done;
1106 }
1107
1108 done:
1109 ib_device_put(device);
1110 put_done:
1111 return err;
1112 }
1113
_nldev_get_dumpit(struct ib_device * device,struct sk_buff * skb,struct netlink_callback * cb,unsigned int idx)1114 static int _nldev_get_dumpit(struct ib_device *device,
1115 struct sk_buff *skb,
1116 struct netlink_callback *cb,
1117 unsigned int idx)
1118 {
1119 int start = cb->args[0];
1120 struct nlmsghdr *nlh;
1121
1122 if (idx < start)
1123 return 0;
1124
1125 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
1126 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
1127 0, NLM_F_MULTI);
1128
1129 if (fill_dev_info(skb, device)) {
1130 nlmsg_cancel(skb, nlh);
1131 goto out;
1132 }
1133
1134 nlmsg_end(skb, nlh);
1135
1136 idx++;
1137
1138 out: cb->args[0] = idx;
1139 return skb->len;
1140 }
1141
nldev_get_dumpit(struct sk_buff * skb,struct netlink_callback * cb)1142 static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
1143 {
1144 /*
1145 * There is no need to take lock, because
1146 * we are relying on ib_core's locking.
1147 */
1148 return ib_enum_all_devs(_nldev_get_dumpit, skb, cb);
1149 }
1150
nldev_port_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1151 static int nldev_port_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1152 struct netlink_ext_ack *extack)
1153 {
1154 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1155 struct ib_device *device;
1156 struct sk_buff *msg;
1157 u32 index;
1158 u32 port;
1159 int err;
1160
1161 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1162 nldev_policy, extack);
1163 if (err ||
1164 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
1165 !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
1166 return -EINVAL;
1167
1168 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1169 device = ib_device_get_by_index(sock_net(skb->sk), index);
1170 if (!device)
1171 return -EINVAL;
1172
1173 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1174 if (!rdma_is_port_valid(device, port)) {
1175 err = -EINVAL;
1176 goto err;
1177 }
1178
1179 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1180 if (!msg) {
1181 err = -ENOMEM;
1182 goto err;
1183 }
1184
1185 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1186 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
1187 0, 0);
1188
1189 err = fill_port_info(msg, device, port, sock_net(skb->sk));
1190 if (err)
1191 goto err_free;
1192
1193 nlmsg_end(msg, nlh);
1194 ib_device_put(device);
1195
1196 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1197
1198 err_free:
1199 nlmsg_free(msg);
1200 err:
1201 ib_device_put(device);
1202 return err;
1203 }
1204
nldev_port_get_dumpit(struct sk_buff * skb,struct netlink_callback * cb)1205 static int nldev_port_get_dumpit(struct sk_buff *skb,
1206 struct netlink_callback *cb)
1207 {
1208 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1209 struct ib_device *device;
1210 int start = cb->args[0];
1211 struct nlmsghdr *nlh;
1212 u32 idx = 0;
1213 u32 ifindex;
1214 int err;
1215 unsigned int p;
1216
1217 err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1218 nldev_policy, NULL);
1219 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1220 return -EINVAL;
1221
1222 ifindex = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1223 device = ib_device_get_by_index(sock_net(skb->sk), ifindex);
1224 if (!device)
1225 return -EINVAL;
1226
1227 rdma_for_each_port (device, p) {
1228 /*
1229 * The dumpit function returns all information from specific
1230 * index. This specific index is taken from the netlink
1231 * messages request sent by user and it is available
1232 * in cb->args[0].
1233 *
1234 * Usually, the user doesn't fill this field and it causes
1235 * to return everything.
1236 *
1237 */
1238 if (idx < start) {
1239 idx++;
1240 continue;
1241 }
1242
1243 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid,
1244 cb->nlh->nlmsg_seq,
1245 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1246 RDMA_NLDEV_CMD_PORT_GET),
1247 0, NLM_F_MULTI);
1248
1249 if (fill_port_info(skb, device, p, sock_net(skb->sk))) {
1250 nlmsg_cancel(skb, nlh);
1251 goto out;
1252 }
1253 idx++;
1254 nlmsg_end(skb, nlh);
1255 }
1256
1257 out:
1258 ib_device_put(device);
1259 cb->args[0] = idx;
1260 return skb->len;
1261 }
1262
nldev_res_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1263 static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1264 struct netlink_ext_ack *extack)
1265 {
1266 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1267 struct ib_device *device;
1268 struct sk_buff *msg;
1269 u32 index;
1270 int ret;
1271
1272 ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1273 nldev_policy, extack);
1274 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1275 return -EINVAL;
1276
1277 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1278 device = ib_device_get_by_index(sock_net(skb->sk), index);
1279 if (!device)
1280 return -EINVAL;
1281
1282 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1283 if (!msg) {
1284 ret = -ENOMEM;
1285 goto err;
1286 }
1287
1288 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1289 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
1290 0, 0);
1291
1292 ret = fill_res_info(msg, device);
1293 if (ret)
1294 goto err_free;
1295
1296 nlmsg_end(msg, nlh);
1297 ib_device_put(device);
1298 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1299
1300 err_free:
1301 nlmsg_free(msg);
1302 err:
1303 ib_device_put(device);
1304 return ret;
1305 }
1306
_nldev_res_get_dumpit(struct ib_device * device,struct sk_buff * skb,struct netlink_callback * cb,unsigned int idx)1307 static int _nldev_res_get_dumpit(struct ib_device *device,
1308 struct sk_buff *skb,
1309 struct netlink_callback *cb,
1310 unsigned int idx)
1311 {
1312 int start = cb->args[0];
1313 struct nlmsghdr *nlh;
1314
1315 if (idx < start)
1316 return 0;
1317
1318 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
1319 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
1320 0, NLM_F_MULTI);
1321
1322 if (fill_res_info(skb, device)) {
1323 nlmsg_cancel(skb, nlh);
1324 goto out;
1325 }
1326 nlmsg_end(skb, nlh);
1327
1328 idx++;
1329
1330 out:
1331 cb->args[0] = idx;
1332 return skb->len;
1333 }
1334
nldev_res_get_dumpit(struct sk_buff * skb,struct netlink_callback * cb)1335 static int nldev_res_get_dumpit(struct sk_buff *skb,
1336 struct netlink_callback *cb)
1337 {
1338 return ib_enum_all_devs(_nldev_res_get_dumpit, skb, cb);
1339 }
1340
1341 struct nldev_fill_res_entry {
1342 enum rdma_nldev_attr nldev_attr;
1343 u8 flags;
1344 u32 entry;
1345 u32 id;
1346 };
1347
1348 enum nldev_res_flags {
1349 NLDEV_PER_DEV = 1 << 0,
1350 };
1351
1352 static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
1353 [RDMA_RESTRACK_QP] = {
1354 .nldev_attr = RDMA_NLDEV_ATTR_RES_QP,
1355 .entry = RDMA_NLDEV_ATTR_RES_QP_ENTRY,
1356 .id = RDMA_NLDEV_ATTR_RES_LQPN,
1357 },
1358 [RDMA_RESTRACK_CM_ID] = {
1359 .nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID,
1360 .entry = RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY,
1361 .id = RDMA_NLDEV_ATTR_RES_CM_IDN,
1362 },
1363 [RDMA_RESTRACK_CQ] = {
1364 .nldev_attr = RDMA_NLDEV_ATTR_RES_CQ,
1365 .flags = NLDEV_PER_DEV,
1366 .entry = RDMA_NLDEV_ATTR_RES_CQ_ENTRY,
1367 .id = RDMA_NLDEV_ATTR_RES_CQN,
1368 },
1369 [RDMA_RESTRACK_MR] = {
1370 .nldev_attr = RDMA_NLDEV_ATTR_RES_MR,
1371 .flags = NLDEV_PER_DEV,
1372 .entry = RDMA_NLDEV_ATTR_RES_MR_ENTRY,
1373 .id = RDMA_NLDEV_ATTR_RES_MRN,
1374 },
1375 [RDMA_RESTRACK_PD] = {
1376 .nldev_attr = RDMA_NLDEV_ATTR_RES_PD,
1377 .flags = NLDEV_PER_DEV,
1378 .entry = RDMA_NLDEV_ATTR_RES_PD_ENTRY,
1379 .id = RDMA_NLDEV_ATTR_RES_PDN,
1380 },
1381 [RDMA_RESTRACK_COUNTER] = {
1382 .nldev_attr = RDMA_NLDEV_ATTR_STAT_COUNTER,
1383 .entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY,
1384 .id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID,
1385 },
1386 [RDMA_RESTRACK_CTX] = {
1387 .nldev_attr = RDMA_NLDEV_ATTR_RES_CTX,
1388 .flags = NLDEV_PER_DEV,
1389 .entry = RDMA_NLDEV_ATTR_RES_CTX_ENTRY,
1390 .id = RDMA_NLDEV_ATTR_RES_CTXN,
1391 },
1392 [RDMA_RESTRACK_SRQ] = {
1393 .nldev_attr = RDMA_NLDEV_ATTR_RES_SRQ,
1394 .flags = NLDEV_PER_DEV,
1395 .entry = RDMA_NLDEV_ATTR_RES_SRQ_ENTRY,
1396 .id = RDMA_NLDEV_ATTR_RES_SRQN,
1397 },
1398
1399 };
1400
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)1401 static int res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1402 struct netlink_ext_ack *extack,
1403 enum rdma_restrack_type res_type,
1404 res_fill_func_t fill_func)
1405 {
1406 const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
1407 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1408 struct rdma_restrack_entry *res;
1409 struct ib_device *device;
1410 u32 index, id, port = 0;
1411 bool has_cap_net_admin;
1412 struct sk_buff *msg;
1413 int ret;
1414
1415 ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1416 nldev_policy, extack);
1417 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !fe->id || !tb[fe->id])
1418 return -EINVAL;
1419
1420 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1421 device = ib_device_get_by_index(sock_net(skb->sk), index);
1422 if (!device)
1423 return -EINVAL;
1424
1425 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1426 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1427 if (!rdma_is_port_valid(device, port)) {
1428 ret = -EINVAL;
1429 goto err;
1430 }
1431 }
1432
1433 if ((port && fe->flags & NLDEV_PER_DEV) ||
1434 (!port && ~fe->flags & NLDEV_PER_DEV)) {
1435 ret = -EINVAL;
1436 goto err;
1437 }
1438
1439 id = nla_get_u32(tb[fe->id]);
1440 res = rdma_restrack_get_byid(device, res_type, id);
1441 if (IS_ERR(res)) {
1442 ret = PTR_ERR(res);
1443 goto err;
1444 }
1445
1446 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1447 if (!msg) {
1448 ret = -ENOMEM;
1449 goto err_get;
1450 }
1451
1452 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1453 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1454 RDMA_NL_GET_OP(nlh->nlmsg_type)),
1455 0, 0);
1456
1457 if (fill_nldev_handle(msg, device)) {
1458 ret = -EMSGSIZE;
1459 goto err_free;
1460 }
1461
1462 has_cap_net_admin = netlink_capable(skb, CAP_NET_ADMIN);
1463
1464 ret = fill_func(msg, has_cap_net_admin, res, port);
1465 if (ret)
1466 goto err_free;
1467
1468 rdma_restrack_put(res);
1469 nlmsg_end(msg, nlh);
1470 ib_device_put(device);
1471 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1472
1473 err_free:
1474 nlmsg_free(msg);
1475 err_get:
1476 rdma_restrack_put(res);
1477 err:
1478 ib_device_put(device);
1479 return ret;
1480 }
1481
res_get_common_dumpit(struct sk_buff * skb,struct netlink_callback * cb,enum rdma_restrack_type res_type,res_fill_func_t fill_func)1482 static int res_get_common_dumpit(struct sk_buff *skb,
1483 struct netlink_callback *cb,
1484 enum rdma_restrack_type res_type,
1485 res_fill_func_t fill_func)
1486 {
1487 const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
1488 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1489 struct rdma_restrack_entry *res;
1490 struct rdma_restrack_root *rt;
1491 int err, ret = 0, idx = 0;
1492 struct nlattr *table_attr;
1493 struct nlattr *entry_attr;
1494 struct ib_device *device;
1495 int start = cb->args[0];
1496 bool has_cap_net_admin;
1497 struct nlmsghdr *nlh;
1498 unsigned long id;
1499 u32 index, port = 0;
1500 bool filled = false;
1501
1502 err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1503 nldev_policy, NULL);
1504 /*
1505 * Right now, we are expecting the device index to get res information,
1506 * but it is possible to extend this code to return all devices in
1507 * one shot by checking the existence of RDMA_NLDEV_ATTR_DEV_INDEX.
1508 * if it doesn't exist, we will iterate over all devices.
1509 *
1510 * But it is not needed for now.
1511 */
1512 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1513 return -EINVAL;
1514
1515 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1516 device = ib_device_get_by_index(sock_net(skb->sk), index);
1517 if (!device)
1518 return -EINVAL;
1519
1520 /*
1521 * If no PORT_INDEX is supplied, we will return all QPs from that device
1522 */
1523 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1524 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1525 if (!rdma_is_port_valid(device, port)) {
1526 ret = -EINVAL;
1527 goto err_index;
1528 }
1529 }
1530
1531 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
1532 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1533 RDMA_NL_GET_OP(cb->nlh->nlmsg_type)),
1534 0, NLM_F_MULTI);
1535
1536 if (fill_nldev_handle(skb, device)) {
1537 ret = -EMSGSIZE;
1538 goto err;
1539 }
1540
1541 table_attr = nla_nest_start_noflag(skb, fe->nldev_attr);
1542 if (!table_attr) {
1543 ret = -EMSGSIZE;
1544 goto err;
1545 }
1546
1547 has_cap_net_admin = netlink_capable(cb->skb, CAP_NET_ADMIN);
1548
1549 rt = &device->res[res_type];
1550 xa_lock(&rt->xa);
1551 /*
1552 * FIXME: if the skip ahead is something common this loop should
1553 * use xas_for_each & xas_pause to optimize, we can have a lot of
1554 * objects.
1555 */
1556 xa_for_each(&rt->xa, id, res) {
1557 if (idx < start || !rdma_restrack_get(res))
1558 goto next;
1559
1560 xa_unlock(&rt->xa);
1561
1562 filled = true;
1563
1564 entry_attr = nla_nest_start_noflag(skb, fe->entry);
1565 if (!entry_attr) {
1566 ret = -EMSGSIZE;
1567 rdma_restrack_put(res);
1568 goto msg_full;
1569 }
1570
1571 ret = fill_func(skb, has_cap_net_admin, res, port);
1572
1573 rdma_restrack_put(res);
1574
1575 if (ret) {
1576 nla_nest_cancel(skb, entry_attr);
1577 if (ret == -EMSGSIZE)
1578 goto msg_full;
1579 if (ret == -EAGAIN)
1580 goto again;
1581 goto res_err;
1582 }
1583 nla_nest_end(skb, entry_attr);
1584 again: xa_lock(&rt->xa);
1585 next: idx++;
1586 }
1587 xa_unlock(&rt->xa);
1588
1589 msg_full:
1590 nla_nest_end(skb, table_attr);
1591 nlmsg_end(skb, nlh);
1592 cb->args[0] = idx;
1593
1594 /*
1595 * No more entries to fill, cancel the message and
1596 * return 0 to mark end of dumpit.
1597 */
1598 if (!filled)
1599 goto err;
1600
1601 ib_device_put(device);
1602 return skb->len;
1603
1604 res_err:
1605 nla_nest_cancel(skb, table_attr);
1606
1607 err:
1608 nlmsg_cancel(skb, nlh);
1609
1610 err_index:
1611 ib_device_put(device);
1612 return ret;
1613 }
1614
1615 #define RES_GET_FUNCS(name, type) \
1616 static int nldev_res_get_##name##_dumpit(struct sk_buff *skb, \
1617 struct netlink_callback *cb) \
1618 { \
1619 return res_get_common_dumpit(skb, cb, type, \
1620 fill_res_##name##_entry); \
1621 } \
1622 static int nldev_res_get_##name##_doit(struct sk_buff *skb, \
1623 struct nlmsghdr *nlh, \
1624 struct netlink_ext_ack *extack) \
1625 { \
1626 return res_get_common_doit(skb, nlh, extack, type, \
1627 fill_res_##name##_entry); \
1628 }
1629
1630 RES_GET_FUNCS(qp, RDMA_RESTRACK_QP);
1631 RES_GET_FUNCS(qp_raw, RDMA_RESTRACK_QP);
1632 RES_GET_FUNCS(cm_id, RDMA_RESTRACK_CM_ID);
1633 RES_GET_FUNCS(cq, RDMA_RESTRACK_CQ);
1634 RES_GET_FUNCS(cq_raw, RDMA_RESTRACK_CQ);
1635 RES_GET_FUNCS(pd, RDMA_RESTRACK_PD);
1636 RES_GET_FUNCS(mr, RDMA_RESTRACK_MR);
1637 RES_GET_FUNCS(mr_raw, RDMA_RESTRACK_MR);
1638 RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER);
1639 RES_GET_FUNCS(ctx, RDMA_RESTRACK_CTX);
1640 RES_GET_FUNCS(srq, RDMA_RESTRACK_SRQ);
1641
1642 static LIST_HEAD(link_ops);
1643 static DECLARE_RWSEM(link_ops_rwsem);
1644
link_ops_get(const char * type)1645 static const struct rdma_link_ops *link_ops_get(const char *type)
1646 {
1647 const struct rdma_link_ops *ops;
1648
1649 list_for_each_entry(ops, &link_ops, list) {
1650 if (!strcmp(ops->type, type))
1651 goto out;
1652 }
1653 ops = NULL;
1654 out:
1655 return ops;
1656 }
1657
rdma_link_register(struct rdma_link_ops * ops)1658 void rdma_link_register(struct rdma_link_ops *ops)
1659 {
1660 down_write(&link_ops_rwsem);
1661 if (WARN_ON_ONCE(link_ops_get(ops->type)))
1662 goto out;
1663 list_add(&ops->list, &link_ops);
1664 out:
1665 up_write(&link_ops_rwsem);
1666 }
1667 EXPORT_SYMBOL(rdma_link_register);
1668
rdma_link_unregister(struct rdma_link_ops * ops)1669 void rdma_link_unregister(struct rdma_link_ops *ops)
1670 {
1671 down_write(&link_ops_rwsem);
1672 list_del(&ops->list);
1673 up_write(&link_ops_rwsem);
1674 }
1675 EXPORT_SYMBOL(rdma_link_unregister);
1676
nldev_newlink(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1677 static int nldev_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
1678 struct netlink_ext_ack *extack)
1679 {
1680 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1681 char ibdev_name[IB_DEVICE_NAME_MAX];
1682 const struct rdma_link_ops *ops;
1683 char ndev_name[IFNAMSIZ];
1684 struct net_device *ndev;
1685 char type[IFNAMSIZ];
1686 int err;
1687
1688 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1689 nldev_policy, extack);
1690 if (err || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
1691 !tb[RDMA_NLDEV_ATTR_LINK_TYPE] || !tb[RDMA_NLDEV_ATTR_NDEV_NAME])
1692 return -EINVAL;
1693
1694 nla_strscpy(ibdev_name, tb[RDMA_NLDEV_ATTR_DEV_NAME],
1695 sizeof(ibdev_name));
1696 if (strchr(ibdev_name, '%') || strlen(ibdev_name) == 0)
1697 return -EINVAL;
1698
1699 nla_strscpy(type, tb[RDMA_NLDEV_ATTR_LINK_TYPE], sizeof(type));
1700 nla_strscpy(ndev_name, tb[RDMA_NLDEV_ATTR_NDEV_NAME],
1701 sizeof(ndev_name));
1702
1703 ndev = dev_get_by_name(sock_net(skb->sk), ndev_name);
1704 if (!ndev)
1705 return -ENODEV;
1706
1707 down_read(&link_ops_rwsem);
1708 ops = link_ops_get(type);
1709 #ifdef CONFIG_MODULES
1710 if (!ops) {
1711 up_read(&link_ops_rwsem);
1712 request_module("rdma-link-%s", type);
1713 down_read(&link_ops_rwsem);
1714 ops = link_ops_get(type);
1715 }
1716 #endif
1717 err = ops ? ops->newlink(ibdev_name, ndev) : -EINVAL;
1718 up_read(&link_ops_rwsem);
1719 dev_put(ndev);
1720
1721 return err;
1722 }
1723
nldev_dellink(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1724 static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
1725 struct netlink_ext_ack *extack)
1726 {
1727 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1728 struct ib_device *device;
1729 u32 index;
1730 int err;
1731
1732 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1733 nldev_policy, extack);
1734 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1735 return -EINVAL;
1736
1737 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1738 device = ib_device_get_by_index(sock_net(skb->sk), index);
1739 if (!device)
1740 return -EINVAL;
1741
1742 if (!(device->attrs.kernel_cap_flags & IBK_ALLOW_USER_UNREG)) {
1743 ib_device_put(device);
1744 return -EINVAL;
1745 }
1746
1747 ib_unregister_device_and_put(device);
1748 return 0;
1749 }
1750
nldev_get_chardev(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1751 static int nldev_get_chardev(struct sk_buff *skb, struct nlmsghdr *nlh,
1752 struct netlink_ext_ack *extack)
1753 {
1754 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1755 char client_name[RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE];
1756 struct ib_client_nl_info data = {};
1757 struct ib_device *ibdev = NULL;
1758 struct sk_buff *msg;
1759 u32 index;
1760 int err;
1761
1762 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy,
1763 extack);
1764 if (err || !tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE])
1765 return -EINVAL;
1766
1767 nla_strscpy(client_name, tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE],
1768 sizeof(client_name));
1769
1770 if (tb[RDMA_NLDEV_ATTR_DEV_INDEX]) {
1771 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1772 ibdev = ib_device_get_by_index(sock_net(skb->sk), index);
1773 if (!ibdev)
1774 return -EINVAL;
1775
1776 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1777 data.port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1778 if (!rdma_is_port_valid(ibdev, data.port)) {
1779 err = -EINVAL;
1780 goto out_put;
1781 }
1782 } else {
1783 data.port = -1;
1784 }
1785 } else if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1786 return -EINVAL;
1787 }
1788
1789 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1790 if (!msg) {
1791 err = -ENOMEM;
1792 goto out_put;
1793 }
1794 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1795 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1796 RDMA_NLDEV_CMD_GET_CHARDEV),
1797 0, 0);
1798
1799 data.nl_msg = msg;
1800 err = ib_get_client_nl_info(ibdev, client_name, &data);
1801 if (err)
1802 goto out_nlmsg;
1803
1804 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV,
1805 huge_encode_dev(data.cdev->devt),
1806 RDMA_NLDEV_ATTR_PAD);
1807 if (err)
1808 goto out_data;
1809 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV_ABI, data.abi,
1810 RDMA_NLDEV_ATTR_PAD);
1811 if (err)
1812 goto out_data;
1813 if (nla_put_string(msg, RDMA_NLDEV_ATTR_CHARDEV_NAME,
1814 dev_name(data.cdev))) {
1815 err = -EMSGSIZE;
1816 goto out_data;
1817 }
1818
1819 nlmsg_end(msg, nlh);
1820 put_device(data.cdev);
1821 if (ibdev)
1822 ib_device_put(ibdev);
1823 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1824
1825 out_data:
1826 put_device(data.cdev);
1827 out_nlmsg:
1828 nlmsg_free(msg);
1829 out_put:
1830 if (ibdev)
1831 ib_device_put(ibdev);
1832 return err;
1833 }
1834
nldev_sys_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1835 static int nldev_sys_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1836 struct netlink_ext_ack *extack)
1837 {
1838 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1839 struct sk_buff *msg;
1840 int err;
1841
1842 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1843 nldev_policy, extack);
1844 if (err)
1845 return err;
1846
1847 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1848 if (!msg)
1849 return -ENOMEM;
1850
1851 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1852 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1853 RDMA_NLDEV_CMD_SYS_GET),
1854 0, 0);
1855
1856 err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_NETNS_MODE,
1857 (u8)ib_devices_shared_netns);
1858 if (err) {
1859 nlmsg_free(msg);
1860 return err;
1861 }
1862
1863 /*
1864 * Copy-on-fork is supported.
1865 * See commits:
1866 * 70e806e4e645 ("mm: Do early cow for pinned pages during fork() for ptes")
1867 * 4eae4efa2c29 ("hugetlb: do early cow when page pinned on src mm")
1868 * for more details. Don't backport this without them.
1869 *
1870 * Return value ignored on purpose, assume copy-on-fork is not
1871 * supported in case of failure.
1872 */
1873 nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK, 1);
1874
1875 nlmsg_end(msg, nlh);
1876 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1877 }
1878
nldev_set_sys_set_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1879 static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1880 struct netlink_ext_ack *extack)
1881 {
1882 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1883 u8 enable;
1884 int err;
1885
1886 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1887 nldev_policy, extack);
1888 if (err || !tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE])
1889 return -EINVAL;
1890
1891 enable = nla_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]);
1892 /* Only 0 and 1 are supported */
1893 if (enable > 1)
1894 return -EINVAL;
1895
1896 err = rdma_compatdev_set(enable);
1897 return err;
1898 }
1899
nldev_stat_set_mode_doit(struct sk_buff * msg,struct netlink_ext_ack * extack,struct nlattr * tb[],struct ib_device * device,u32 port)1900 static int nldev_stat_set_mode_doit(struct sk_buff *msg,
1901 struct netlink_ext_ack *extack,
1902 struct nlattr *tb[],
1903 struct ib_device *device, u32 port)
1904 {
1905 u32 mode, mask = 0, qpn, cntn = 0;
1906 int ret;
1907
1908 /* Currently only counter for QP is supported */
1909 if (!tb[RDMA_NLDEV_ATTR_STAT_RES] ||
1910 nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP)
1911 return -EINVAL;
1912
1913 mode = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_MODE]);
1914 if (mode == RDMA_COUNTER_MODE_AUTO) {
1915 if (tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK])
1916 mask = nla_get_u32(
1917 tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]);
1918 return rdma_counter_set_auto_mode(device, port, mask, extack);
1919 }
1920
1921 if (!tb[RDMA_NLDEV_ATTR_RES_LQPN])
1922 return -EINVAL;
1923
1924 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]);
1925 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) {
1926 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);
1927 ret = rdma_counter_bind_qpn(device, port, qpn, cntn);
1928 if (ret)
1929 return ret;
1930 } else {
1931 ret = rdma_counter_bind_qpn_alloc(device, port, qpn, &cntn);
1932 if (ret)
1933 return ret;
1934 }
1935
1936 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) ||
1937 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) {
1938 ret = -EMSGSIZE;
1939 goto err_fill;
1940 }
1941
1942 return 0;
1943
1944 err_fill:
1945 rdma_counter_unbind_qpn(device, port, qpn, cntn);
1946 return ret;
1947 }
1948
nldev_stat_set_counter_dynamic_doit(struct nlattr * tb[],struct ib_device * device,u32 port)1949 static int nldev_stat_set_counter_dynamic_doit(struct nlattr *tb[],
1950 struct ib_device *device,
1951 u32 port)
1952 {
1953 struct rdma_hw_stats *stats;
1954 struct nlattr *entry_attr;
1955 unsigned long *target;
1956 int rem, i, ret = 0;
1957 u32 index;
1958
1959 stats = ib_get_hw_stats_port(device, port);
1960 if (!stats)
1961 return -EINVAL;
1962
1963 target = kcalloc(BITS_TO_LONGS(stats->num_counters),
1964 sizeof(*stats->is_disabled), GFP_KERNEL);
1965 if (!target)
1966 return -ENOMEM;
1967
1968 nla_for_each_nested(entry_attr, tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS],
1969 rem) {
1970 index = nla_get_u32(entry_attr);
1971 if ((index >= stats->num_counters) ||
1972 !(stats->descs[index].flags & IB_STAT_FLAG_OPTIONAL)) {
1973 ret = -EINVAL;
1974 goto out;
1975 }
1976
1977 set_bit(index, target);
1978 }
1979
1980 for (i = 0; i < stats->num_counters; i++) {
1981 if (!(stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL))
1982 continue;
1983
1984 ret = rdma_counter_modify(device, port, i, test_bit(i, target));
1985 if (ret)
1986 goto out;
1987 }
1988
1989 out:
1990 kfree(target);
1991 return ret;
1992 }
1993
nldev_stat_set_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1994 static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1995 struct netlink_ext_ack *extack)
1996 {
1997 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1998 struct ib_device *device;
1999 struct sk_buff *msg;
2000 u32 index, port;
2001 int ret;
2002
2003 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy,
2004 extack);
2005 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
2006 !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2007 return -EINVAL;
2008
2009 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2010 device = ib_device_get_by_index(sock_net(skb->sk), index);
2011 if (!device)
2012 return -EINVAL;
2013
2014 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2015 if (!rdma_is_port_valid(device, port)) {
2016 ret = -EINVAL;
2017 goto err_put_device;
2018 }
2019
2020 if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] &&
2021 !tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS]) {
2022 ret = -EINVAL;
2023 goto err_put_device;
2024 }
2025
2026 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2027 if (!msg) {
2028 ret = -ENOMEM;
2029 goto err_put_device;
2030 }
2031 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2032 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2033 RDMA_NLDEV_CMD_STAT_SET),
2034 0, 0);
2035 if (fill_nldev_handle(msg, device) ||
2036 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) {
2037 ret = -EMSGSIZE;
2038 goto err_free_msg;
2039 }
2040
2041 if (tb[RDMA_NLDEV_ATTR_STAT_MODE]) {
2042 ret = nldev_stat_set_mode_doit(msg, extack, tb, device, port);
2043 if (ret)
2044 goto err_free_msg;
2045 }
2046
2047 if (tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS]) {
2048 ret = nldev_stat_set_counter_dynamic_doit(tb, device, port);
2049 if (ret)
2050 goto err_free_msg;
2051 }
2052
2053 nlmsg_end(msg, nlh);
2054 ib_device_put(device);
2055 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2056
2057 err_free_msg:
2058 nlmsg_free(msg);
2059 err_put_device:
2060 ib_device_put(device);
2061 return ret;
2062 }
2063
nldev_stat_del_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)2064 static int nldev_stat_del_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
2065 struct netlink_ext_ack *extack)
2066 {
2067 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2068 struct ib_device *device;
2069 struct sk_buff *msg;
2070 u32 index, port, qpn, cntn;
2071 int ret;
2072
2073 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2074 nldev_policy, extack);
2075 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] ||
2076 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX] ||
2077 !tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID] ||
2078 !tb[RDMA_NLDEV_ATTR_RES_LQPN])
2079 return -EINVAL;
2080
2081 if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP)
2082 return -EINVAL;
2083
2084 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2085 device = ib_device_get_by_index(sock_net(skb->sk), index);
2086 if (!device)
2087 return -EINVAL;
2088
2089 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2090 if (!rdma_is_port_valid(device, port)) {
2091 ret = -EINVAL;
2092 goto err;
2093 }
2094
2095 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2096 if (!msg) {
2097 ret = -ENOMEM;
2098 goto err;
2099 }
2100 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2101 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2102 RDMA_NLDEV_CMD_STAT_SET),
2103 0, 0);
2104
2105 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);
2106 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]);
2107 if (fill_nldev_handle(msg, device) ||
2108 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) ||
2109 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) ||
2110 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) {
2111 ret = -EMSGSIZE;
2112 goto err_fill;
2113 }
2114
2115 ret = rdma_counter_unbind_qpn(device, port, qpn, cntn);
2116 if (ret)
2117 goto err_fill;
2118
2119 nlmsg_end(msg, nlh);
2120 ib_device_put(device);
2121 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2122
2123 err_fill:
2124 nlmsg_free(msg);
2125 err:
2126 ib_device_put(device);
2127 return ret;
2128 }
2129
stat_get_doit_default_counter(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack,struct nlattr * tb[])2130 static int stat_get_doit_default_counter(struct sk_buff *skb,
2131 struct nlmsghdr *nlh,
2132 struct netlink_ext_ack *extack,
2133 struct nlattr *tb[])
2134 {
2135 struct rdma_hw_stats *stats;
2136 struct nlattr *table_attr;
2137 struct ib_device *device;
2138 int ret, num_cnts, i;
2139 struct sk_buff *msg;
2140 u32 index, port;
2141 u64 v;
2142
2143 if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2144 return -EINVAL;
2145
2146 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2147 device = ib_device_get_by_index(sock_net(skb->sk), index);
2148 if (!device)
2149 return -EINVAL;
2150
2151 if (!device->ops.alloc_hw_port_stats || !device->ops.get_hw_stats) {
2152 ret = -EINVAL;
2153 goto err;
2154 }
2155
2156 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2157 stats = ib_get_hw_stats_port(device, port);
2158 if (!stats) {
2159 ret = -EINVAL;
2160 goto err;
2161 }
2162
2163 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2164 if (!msg) {
2165 ret = -ENOMEM;
2166 goto err;
2167 }
2168
2169 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2170 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2171 RDMA_NLDEV_CMD_STAT_GET),
2172 0, 0);
2173
2174 if (fill_nldev_handle(msg, device) ||
2175 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) {
2176 ret = -EMSGSIZE;
2177 goto err_msg;
2178 }
2179
2180 mutex_lock(&stats->lock);
2181
2182 num_cnts = device->ops.get_hw_stats(device, stats, port, 0);
2183 if (num_cnts < 0) {
2184 ret = -EINVAL;
2185 goto err_stats;
2186 }
2187
2188 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
2189 if (!table_attr) {
2190 ret = -EMSGSIZE;
2191 goto err_stats;
2192 }
2193 for (i = 0; i < num_cnts; i++) {
2194 if (test_bit(i, stats->is_disabled))
2195 continue;
2196
2197 v = stats->value[i] +
2198 rdma_counter_get_hwstat_value(device, port, i);
2199 if (rdma_nl_stat_hwcounter_entry(msg,
2200 stats->descs[i].name, v)) {
2201 ret = -EMSGSIZE;
2202 goto err_table;
2203 }
2204 }
2205 nla_nest_end(msg, table_attr);
2206
2207 mutex_unlock(&stats->lock);
2208 nlmsg_end(msg, nlh);
2209 ib_device_put(device);
2210 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2211
2212 err_table:
2213 nla_nest_cancel(msg, table_attr);
2214 err_stats:
2215 mutex_unlock(&stats->lock);
2216 err_msg:
2217 nlmsg_free(msg);
2218 err:
2219 ib_device_put(device);
2220 return ret;
2221 }
2222
stat_get_doit_qp(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack,struct nlattr * tb[])2223 static int stat_get_doit_qp(struct sk_buff *skb, struct nlmsghdr *nlh,
2224 struct netlink_ext_ack *extack, struct nlattr *tb[])
2225
2226 {
2227 static enum rdma_nl_counter_mode mode;
2228 static enum rdma_nl_counter_mask mask;
2229 struct ib_device *device;
2230 struct sk_buff *msg;
2231 u32 index, port;
2232 int ret;
2233
2234 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID])
2235 return nldev_res_get_counter_doit(skb, nlh, extack);
2236
2237 if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] ||
2238 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2239 return -EINVAL;
2240
2241 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2242 device = ib_device_get_by_index(sock_net(skb->sk), index);
2243 if (!device)
2244 return -EINVAL;
2245
2246 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2247 if (!rdma_is_port_valid(device, port)) {
2248 ret = -EINVAL;
2249 goto err;
2250 }
2251
2252 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2253 if (!msg) {
2254 ret = -ENOMEM;
2255 goto err;
2256 }
2257
2258 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2259 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2260 RDMA_NLDEV_CMD_STAT_GET),
2261 0, 0);
2262
2263 ret = rdma_counter_get_mode(device, port, &mode, &mask);
2264 if (ret)
2265 goto err_msg;
2266
2267 if (fill_nldev_handle(msg, device) ||
2268 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) ||
2269 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, mode)) {
2270 ret = -EMSGSIZE;
2271 goto err_msg;
2272 }
2273
2274 if ((mode == RDMA_COUNTER_MODE_AUTO) &&
2275 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, mask)) {
2276 ret = -EMSGSIZE;
2277 goto err_msg;
2278 }
2279
2280 nlmsg_end(msg, nlh);
2281 ib_device_put(device);
2282 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2283
2284 err_msg:
2285 nlmsg_free(msg);
2286 err:
2287 ib_device_put(device);
2288 return ret;
2289 }
2290
nldev_stat_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)2291 static int nldev_stat_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
2292 struct netlink_ext_ack *extack)
2293 {
2294 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2295 int ret;
2296
2297 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2298 nldev_policy, extack);
2299 if (ret)
2300 return -EINVAL;
2301
2302 if (!tb[RDMA_NLDEV_ATTR_STAT_RES])
2303 return stat_get_doit_default_counter(skb, nlh, extack, tb);
2304
2305 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) {
2306 case RDMA_NLDEV_ATTR_RES_QP:
2307 ret = stat_get_doit_qp(skb, nlh, extack, tb);
2308 break;
2309 case RDMA_NLDEV_ATTR_RES_MR:
2310 ret = res_get_common_doit(skb, nlh, extack, RDMA_RESTRACK_MR,
2311 fill_stat_mr_entry);
2312 break;
2313 default:
2314 ret = -EINVAL;
2315 break;
2316 }
2317
2318 return ret;
2319 }
2320
nldev_stat_get_dumpit(struct sk_buff * skb,struct netlink_callback * cb)2321 static int nldev_stat_get_dumpit(struct sk_buff *skb,
2322 struct netlink_callback *cb)
2323 {
2324 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2325 int ret;
2326
2327 ret = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2328 nldev_policy, NULL);
2329 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES])
2330 return -EINVAL;
2331
2332 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) {
2333 case RDMA_NLDEV_ATTR_RES_QP:
2334 ret = nldev_res_get_counter_dumpit(skb, cb);
2335 break;
2336 case RDMA_NLDEV_ATTR_RES_MR:
2337 ret = res_get_common_dumpit(skb, cb, RDMA_RESTRACK_MR,
2338 fill_stat_mr_entry);
2339 break;
2340 default:
2341 ret = -EINVAL;
2342 break;
2343 }
2344
2345 return ret;
2346 }
2347
nldev_stat_get_counter_status_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)2348 static int nldev_stat_get_counter_status_doit(struct sk_buff *skb,
2349 struct nlmsghdr *nlh,
2350 struct netlink_ext_ack *extack)
2351 {
2352 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX], *table, *entry;
2353 struct rdma_hw_stats *stats;
2354 struct ib_device *device;
2355 struct sk_buff *msg;
2356 u32 devid, port;
2357 int ret, i;
2358
2359 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2360 nldev_policy, extack);
2361 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
2362 !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2363 return -EINVAL;
2364
2365 devid = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2366 device = ib_device_get_by_index(sock_net(skb->sk), devid);
2367 if (!device)
2368 return -EINVAL;
2369
2370 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2371 if (!rdma_is_port_valid(device, port)) {
2372 ret = -EINVAL;
2373 goto err;
2374 }
2375
2376 stats = ib_get_hw_stats_port(device, port);
2377 if (!stats) {
2378 ret = -EINVAL;
2379 goto err;
2380 }
2381
2382 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2383 if (!msg) {
2384 ret = -ENOMEM;
2385 goto err;
2386 }
2387
2388 nlh = nlmsg_put(
2389 msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2390 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_STAT_GET_STATUS),
2391 0, 0);
2392
2393 ret = -EMSGSIZE;
2394 if (fill_nldev_handle(msg, device) ||
2395 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port))
2396 goto err_msg;
2397
2398 table = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
2399 if (!table)
2400 goto err_msg;
2401
2402 mutex_lock(&stats->lock);
2403 for (i = 0; i < stats->num_counters; i++) {
2404 entry = nla_nest_start(msg,
2405 RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY);
2406 if (!entry)
2407 goto err_msg_table;
2408
2409 if (nla_put_string(msg,
2410 RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME,
2411 stats->descs[i].name) ||
2412 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_INDEX, i))
2413 goto err_msg_entry;
2414
2415 if ((stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) &&
2416 (nla_put_u8(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC,
2417 !test_bit(i, stats->is_disabled))))
2418 goto err_msg_entry;
2419
2420 nla_nest_end(msg, entry);
2421 }
2422 mutex_unlock(&stats->lock);
2423
2424 nla_nest_end(msg, table);
2425 nlmsg_end(msg, nlh);
2426 ib_device_put(device);
2427 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2428
2429 err_msg_entry:
2430 nla_nest_cancel(msg, entry);
2431 err_msg_table:
2432 mutex_unlock(&stats->lock);
2433 nla_nest_cancel(msg, table);
2434 err_msg:
2435 nlmsg_free(msg);
2436 err:
2437 ib_device_put(device);
2438 return ret;
2439 }
2440
2441 static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
2442 [RDMA_NLDEV_CMD_GET] = {
2443 .doit = nldev_get_doit,
2444 .dump = nldev_get_dumpit,
2445 },
2446 [RDMA_NLDEV_CMD_GET_CHARDEV] = {
2447 .doit = nldev_get_chardev,
2448 },
2449 [RDMA_NLDEV_CMD_SET] = {
2450 .doit = nldev_set_doit,
2451 .flags = RDMA_NL_ADMIN_PERM,
2452 },
2453 [RDMA_NLDEV_CMD_NEWLINK] = {
2454 .doit = nldev_newlink,
2455 .flags = RDMA_NL_ADMIN_PERM,
2456 },
2457 [RDMA_NLDEV_CMD_DELLINK] = {
2458 .doit = nldev_dellink,
2459 .flags = RDMA_NL_ADMIN_PERM,
2460 },
2461 [RDMA_NLDEV_CMD_PORT_GET] = {
2462 .doit = nldev_port_get_doit,
2463 .dump = nldev_port_get_dumpit,
2464 },
2465 [RDMA_NLDEV_CMD_RES_GET] = {
2466 .doit = nldev_res_get_doit,
2467 .dump = nldev_res_get_dumpit,
2468 },
2469 [RDMA_NLDEV_CMD_RES_QP_GET] = {
2470 .doit = nldev_res_get_qp_doit,
2471 .dump = nldev_res_get_qp_dumpit,
2472 },
2473 [RDMA_NLDEV_CMD_RES_CM_ID_GET] = {
2474 .doit = nldev_res_get_cm_id_doit,
2475 .dump = nldev_res_get_cm_id_dumpit,
2476 },
2477 [RDMA_NLDEV_CMD_RES_CQ_GET] = {
2478 .doit = nldev_res_get_cq_doit,
2479 .dump = nldev_res_get_cq_dumpit,
2480 },
2481 [RDMA_NLDEV_CMD_RES_MR_GET] = {
2482 .doit = nldev_res_get_mr_doit,
2483 .dump = nldev_res_get_mr_dumpit,
2484 },
2485 [RDMA_NLDEV_CMD_RES_PD_GET] = {
2486 .doit = nldev_res_get_pd_doit,
2487 .dump = nldev_res_get_pd_dumpit,
2488 },
2489 [RDMA_NLDEV_CMD_RES_CTX_GET] = {
2490 .doit = nldev_res_get_ctx_doit,
2491 .dump = nldev_res_get_ctx_dumpit,
2492 },
2493 [RDMA_NLDEV_CMD_RES_SRQ_GET] = {
2494 .doit = nldev_res_get_srq_doit,
2495 .dump = nldev_res_get_srq_dumpit,
2496 },
2497 [RDMA_NLDEV_CMD_SYS_GET] = {
2498 .doit = nldev_sys_get_doit,
2499 },
2500 [RDMA_NLDEV_CMD_SYS_SET] = {
2501 .doit = nldev_set_sys_set_doit,
2502 },
2503 [RDMA_NLDEV_CMD_STAT_SET] = {
2504 .doit = nldev_stat_set_doit,
2505 .flags = RDMA_NL_ADMIN_PERM,
2506 },
2507 [RDMA_NLDEV_CMD_STAT_GET] = {
2508 .doit = nldev_stat_get_doit,
2509 .dump = nldev_stat_get_dumpit,
2510 },
2511 [RDMA_NLDEV_CMD_STAT_DEL] = {
2512 .doit = nldev_stat_del_doit,
2513 .flags = RDMA_NL_ADMIN_PERM,
2514 },
2515 [RDMA_NLDEV_CMD_RES_QP_GET_RAW] = {
2516 .doit = nldev_res_get_qp_raw_doit,
2517 .dump = nldev_res_get_qp_raw_dumpit,
2518 .flags = RDMA_NL_ADMIN_PERM,
2519 },
2520 [RDMA_NLDEV_CMD_RES_CQ_GET_RAW] = {
2521 .doit = nldev_res_get_cq_raw_doit,
2522 .dump = nldev_res_get_cq_raw_dumpit,
2523 .flags = RDMA_NL_ADMIN_PERM,
2524 },
2525 [RDMA_NLDEV_CMD_RES_MR_GET_RAW] = {
2526 .doit = nldev_res_get_mr_raw_doit,
2527 .dump = nldev_res_get_mr_raw_dumpit,
2528 .flags = RDMA_NL_ADMIN_PERM,
2529 },
2530 [RDMA_NLDEV_CMD_STAT_GET_STATUS] = {
2531 .doit = nldev_stat_get_counter_status_doit,
2532 },
2533 };
2534
nldev_init(void)2535 void __init nldev_init(void)
2536 {
2537 rdma_nl_register(RDMA_NL_NLDEV, nldev_cb_table);
2538 }
2539
nldev_exit(void)2540 void __exit nldev_exit(void)
2541 {
2542 rdma_nl_unregister(RDMA_NL_NLDEV);
2543 }
2544
2545 MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5);
2546