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 	if (!nlh) {
1047 		err = -EMSGSIZE;
1048 		goto err_free;
1049 	}
1050 
1051 	err = fill_dev_info(msg, device);
1052 	if (err)
1053 		goto err_free;
1054 
1055 	nlmsg_end(msg, nlh);
1056 
1057 	ib_device_put(device);
1058 	return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1059 
1060 err_free:
1061 	nlmsg_free(msg);
1062 err:
1063 	ib_device_put(device);
1064 	return err;
1065 }
1066 
nldev_set_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1067 static int nldev_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1068 			  struct netlink_ext_ack *extack)
1069 {
1070 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1071 	struct ib_device *device;
1072 	u32 index;
1073 	int err;
1074 
1075 	err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1076 				     nldev_policy, extack);
1077 	if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1078 		return -EINVAL;
1079 
1080 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1081 	device = ib_device_get_by_index(sock_net(skb->sk), index);
1082 	if (!device)
1083 		return -EINVAL;
1084 
1085 	if (tb[RDMA_NLDEV_ATTR_DEV_NAME]) {
1086 		char name[IB_DEVICE_NAME_MAX] = {};
1087 
1088 		nla_strscpy(name, tb[RDMA_NLDEV_ATTR_DEV_NAME],
1089 			    IB_DEVICE_NAME_MAX);
1090 		if (strlen(name) == 0) {
1091 			err = -EINVAL;
1092 			goto done;
1093 		}
1094 		err = ib_device_rename(device, name);
1095 		goto done;
1096 	}
1097 
1098 	if (tb[RDMA_NLDEV_NET_NS_FD]) {
1099 		u32 ns_fd;
1100 
1101 		ns_fd = nla_get_u32(tb[RDMA_NLDEV_NET_NS_FD]);
1102 		err = ib_device_set_netns_put(skb, device, ns_fd);
1103 		goto put_done;
1104 	}
1105 
1106 	if (tb[RDMA_NLDEV_ATTR_DEV_DIM]) {
1107 		u8 use_dim;
1108 
1109 		use_dim = nla_get_u8(tb[RDMA_NLDEV_ATTR_DEV_DIM]);
1110 		err = ib_device_set_dim(device,  use_dim);
1111 		goto done;
1112 	}
1113 
1114 done:
1115 	ib_device_put(device);
1116 put_done:
1117 	return err;
1118 }
1119 
_nldev_get_dumpit(struct ib_device * device,struct sk_buff * skb,struct netlink_callback * cb,unsigned int idx)1120 static int _nldev_get_dumpit(struct ib_device *device,
1121 			     struct sk_buff *skb,
1122 			     struct netlink_callback *cb,
1123 			     unsigned int idx)
1124 {
1125 	int start = cb->args[0];
1126 	struct nlmsghdr *nlh;
1127 
1128 	if (idx < start)
1129 		return 0;
1130 
1131 	nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
1132 			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
1133 			0, NLM_F_MULTI);
1134 
1135 	if (!nlh || fill_dev_info(skb, device)) {
1136 		nlmsg_cancel(skb, nlh);
1137 		goto out;
1138 	}
1139 
1140 	nlmsg_end(skb, nlh);
1141 
1142 	idx++;
1143 
1144 out:	cb->args[0] = idx;
1145 	return skb->len;
1146 }
1147 
nldev_get_dumpit(struct sk_buff * skb,struct netlink_callback * cb)1148 static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
1149 {
1150 	/*
1151 	 * There is no need to take lock, because
1152 	 * we are relying on ib_core's locking.
1153 	 */
1154 	return ib_enum_all_devs(_nldev_get_dumpit, skb, cb);
1155 }
1156 
nldev_port_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1157 static int nldev_port_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1158 			       struct netlink_ext_ack *extack)
1159 {
1160 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1161 	struct ib_device *device;
1162 	struct sk_buff *msg;
1163 	u32 index;
1164 	u32 port;
1165 	int err;
1166 
1167 	err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1168 				     nldev_policy, extack);
1169 	if (err ||
1170 	    !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
1171 	    !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
1172 		return -EINVAL;
1173 
1174 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1175 	device = ib_device_get_by_index(sock_net(skb->sk), index);
1176 	if (!device)
1177 		return -EINVAL;
1178 
1179 	port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1180 	if (!rdma_is_port_valid(device, port)) {
1181 		err = -EINVAL;
1182 		goto err;
1183 	}
1184 
1185 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1186 	if (!msg) {
1187 		err = -ENOMEM;
1188 		goto err;
1189 	}
1190 
1191 	nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1192 			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
1193 			0, 0);
1194 	if (!nlh) {
1195 		err = -EMSGSIZE;
1196 		goto err_free;
1197 	}
1198 
1199 	err = fill_port_info(msg, device, port, sock_net(skb->sk));
1200 	if (err)
1201 		goto err_free;
1202 
1203 	nlmsg_end(msg, nlh);
1204 	ib_device_put(device);
1205 
1206 	return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1207 
1208 err_free:
1209 	nlmsg_free(msg);
1210 err:
1211 	ib_device_put(device);
1212 	return err;
1213 }
1214 
nldev_port_get_dumpit(struct sk_buff * skb,struct netlink_callback * cb)1215 static int nldev_port_get_dumpit(struct sk_buff *skb,
1216 				 struct netlink_callback *cb)
1217 {
1218 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1219 	struct ib_device *device;
1220 	int start = cb->args[0];
1221 	struct nlmsghdr *nlh;
1222 	u32 idx = 0;
1223 	u32 ifindex;
1224 	int err;
1225 	unsigned int p;
1226 
1227 	err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1228 				     nldev_policy, NULL);
1229 	if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1230 		return -EINVAL;
1231 
1232 	ifindex = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1233 	device = ib_device_get_by_index(sock_net(skb->sk), ifindex);
1234 	if (!device)
1235 		return -EINVAL;
1236 
1237 	rdma_for_each_port (device, p) {
1238 		/*
1239 		 * The dumpit function returns all information from specific
1240 		 * index. This specific index is taken from the netlink
1241 		 * messages request sent by user and it is available
1242 		 * in cb->args[0].
1243 		 *
1244 		 * Usually, the user doesn't fill this field and it causes
1245 		 * to return everything.
1246 		 *
1247 		 */
1248 		if (idx < start) {
1249 			idx++;
1250 			continue;
1251 		}
1252 
1253 		nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid,
1254 				cb->nlh->nlmsg_seq,
1255 				RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1256 						 RDMA_NLDEV_CMD_PORT_GET),
1257 				0, NLM_F_MULTI);
1258 
1259 		if (!nlh || fill_port_info(skb, device, p, sock_net(skb->sk))) {
1260 			nlmsg_cancel(skb, nlh);
1261 			goto out;
1262 		}
1263 		idx++;
1264 		nlmsg_end(skb, nlh);
1265 	}
1266 
1267 out:
1268 	ib_device_put(device);
1269 	cb->args[0] = idx;
1270 	return skb->len;
1271 }
1272 
nldev_res_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1273 static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1274 			      struct netlink_ext_ack *extack)
1275 {
1276 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1277 	struct ib_device *device;
1278 	struct sk_buff *msg;
1279 	u32 index;
1280 	int ret;
1281 
1282 	ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1283 				     nldev_policy, extack);
1284 	if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1285 		return -EINVAL;
1286 
1287 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1288 	device = ib_device_get_by_index(sock_net(skb->sk), index);
1289 	if (!device)
1290 		return -EINVAL;
1291 
1292 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1293 	if (!msg) {
1294 		ret = -ENOMEM;
1295 		goto err;
1296 	}
1297 
1298 	nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1299 			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
1300 			0, 0);
1301 	if (!nlh) {
1302 		ret = -EMSGSIZE;
1303 		goto err_free;
1304 	}
1305 
1306 	ret = fill_res_info(msg, device);
1307 	if (ret)
1308 		goto err_free;
1309 
1310 	nlmsg_end(msg, nlh);
1311 	ib_device_put(device);
1312 	return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1313 
1314 err_free:
1315 	nlmsg_free(msg);
1316 err:
1317 	ib_device_put(device);
1318 	return ret;
1319 }
1320 
_nldev_res_get_dumpit(struct ib_device * device,struct sk_buff * skb,struct netlink_callback * cb,unsigned int idx)1321 static int _nldev_res_get_dumpit(struct ib_device *device,
1322 				 struct sk_buff *skb,
1323 				 struct netlink_callback *cb,
1324 				 unsigned int idx)
1325 {
1326 	int start = cb->args[0];
1327 	struct nlmsghdr *nlh;
1328 
1329 	if (idx < start)
1330 		return 0;
1331 
1332 	nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
1333 			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
1334 			0, NLM_F_MULTI);
1335 
1336 	if (!nlh || fill_res_info(skb, device)) {
1337 		nlmsg_cancel(skb, nlh);
1338 		goto out;
1339 	}
1340 	nlmsg_end(skb, nlh);
1341 
1342 	idx++;
1343 
1344 out:
1345 	cb->args[0] = idx;
1346 	return skb->len;
1347 }
1348 
nldev_res_get_dumpit(struct sk_buff * skb,struct netlink_callback * cb)1349 static int nldev_res_get_dumpit(struct sk_buff *skb,
1350 				struct netlink_callback *cb)
1351 {
1352 	return ib_enum_all_devs(_nldev_res_get_dumpit, skb, cb);
1353 }
1354 
1355 struct nldev_fill_res_entry {
1356 	enum rdma_nldev_attr nldev_attr;
1357 	u8 flags;
1358 	u32 entry;
1359 	u32 id;
1360 };
1361 
1362 enum nldev_res_flags {
1363 	NLDEV_PER_DEV = 1 << 0,
1364 };
1365 
1366 static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
1367 	[RDMA_RESTRACK_QP] = {
1368 		.nldev_attr = RDMA_NLDEV_ATTR_RES_QP,
1369 		.entry = RDMA_NLDEV_ATTR_RES_QP_ENTRY,
1370 		.id = RDMA_NLDEV_ATTR_RES_LQPN,
1371 	},
1372 	[RDMA_RESTRACK_CM_ID] = {
1373 		.nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID,
1374 		.entry = RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY,
1375 		.id = RDMA_NLDEV_ATTR_RES_CM_IDN,
1376 	},
1377 	[RDMA_RESTRACK_CQ] = {
1378 		.nldev_attr = RDMA_NLDEV_ATTR_RES_CQ,
1379 		.flags = NLDEV_PER_DEV,
1380 		.entry = RDMA_NLDEV_ATTR_RES_CQ_ENTRY,
1381 		.id = RDMA_NLDEV_ATTR_RES_CQN,
1382 	},
1383 	[RDMA_RESTRACK_MR] = {
1384 		.nldev_attr = RDMA_NLDEV_ATTR_RES_MR,
1385 		.flags = NLDEV_PER_DEV,
1386 		.entry = RDMA_NLDEV_ATTR_RES_MR_ENTRY,
1387 		.id = RDMA_NLDEV_ATTR_RES_MRN,
1388 	},
1389 	[RDMA_RESTRACK_PD] = {
1390 		.nldev_attr = RDMA_NLDEV_ATTR_RES_PD,
1391 		.flags = NLDEV_PER_DEV,
1392 		.entry = RDMA_NLDEV_ATTR_RES_PD_ENTRY,
1393 		.id = RDMA_NLDEV_ATTR_RES_PDN,
1394 	},
1395 	[RDMA_RESTRACK_COUNTER] = {
1396 		.nldev_attr = RDMA_NLDEV_ATTR_STAT_COUNTER,
1397 		.entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY,
1398 		.id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID,
1399 	},
1400 	[RDMA_RESTRACK_CTX] = {
1401 		.nldev_attr = RDMA_NLDEV_ATTR_RES_CTX,
1402 		.flags = NLDEV_PER_DEV,
1403 		.entry = RDMA_NLDEV_ATTR_RES_CTX_ENTRY,
1404 		.id = RDMA_NLDEV_ATTR_RES_CTXN,
1405 	},
1406 	[RDMA_RESTRACK_SRQ] = {
1407 		.nldev_attr = RDMA_NLDEV_ATTR_RES_SRQ,
1408 		.flags = NLDEV_PER_DEV,
1409 		.entry = RDMA_NLDEV_ATTR_RES_SRQ_ENTRY,
1410 		.id = RDMA_NLDEV_ATTR_RES_SRQN,
1411 	},
1412 
1413 };
1414 
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)1415 static int res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1416 			       struct netlink_ext_ack *extack,
1417 			       enum rdma_restrack_type res_type,
1418 			       res_fill_func_t fill_func)
1419 {
1420 	const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
1421 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1422 	struct rdma_restrack_entry *res;
1423 	struct ib_device *device;
1424 	u32 index, id, port = 0;
1425 	bool has_cap_net_admin;
1426 	struct sk_buff *msg;
1427 	int ret;
1428 
1429 	ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1430 				     nldev_policy, extack);
1431 	if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !fe->id || !tb[fe->id])
1432 		return -EINVAL;
1433 
1434 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1435 	device = ib_device_get_by_index(sock_net(skb->sk), index);
1436 	if (!device)
1437 		return -EINVAL;
1438 
1439 	if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1440 		port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1441 		if (!rdma_is_port_valid(device, port)) {
1442 			ret = -EINVAL;
1443 			goto err;
1444 		}
1445 	}
1446 
1447 	if ((port && fe->flags & NLDEV_PER_DEV) ||
1448 	    (!port && ~fe->flags & NLDEV_PER_DEV)) {
1449 		ret = -EINVAL;
1450 		goto err;
1451 	}
1452 
1453 	id = nla_get_u32(tb[fe->id]);
1454 	res = rdma_restrack_get_byid(device, res_type, id);
1455 	if (IS_ERR(res)) {
1456 		ret = PTR_ERR(res);
1457 		goto err;
1458 	}
1459 
1460 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1461 	if (!msg) {
1462 		ret = -ENOMEM;
1463 		goto err_get;
1464 	}
1465 
1466 	nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1467 			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1468 					 RDMA_NL_GET_OP(nlh->nlmsg_type)),
1469 			0, 0);
1470 
1471 	if (!nlh || fill_nldev_handle(msg, device)) {
1472 		ret = -EMSGSIZE;
1473 		goto err_free;
1474 	}
1475 
1476 	has_cap_net_admin = netlink_capable(skb, CAP_NET_ADMIN);
1477 
1478 	ret = fill_func(msg, has_cap_net_admin, res, port);
1479 	if (ret)
1480 		goto err_free;
1481 
1482 	rdma_restrack_put(res);
1483 	nlmsg_end(msg, nlh);
1484 	ib_device_put(device);
1485 	return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1486 
1487 err_free:
1488 	nlmsg_free(msg);
1489 err_get:
1490 	rdma_restrack_put(res);
1491 err:
1492 	ib_device_put(device);
1493 	return ret;
1494 }
1495 
res_get_common_dumpit(struct sk_buff * skb,struct netlink_callback * cb,enum rdma_restrack_type res_type,res_fill_func_t fill_func)1496 static int res_get_common_dumpit(struct sk_buff *skb,
1497 				 struct netlink_callback *cb,
1498 				 enum rdma_restrack_type res_type,
1499 				 res_fill_func_t fill_func)
1500 {
1501 	const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
1502 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1503 	struct rdma_restrack_entry *res;
1504 	struct rdma_restrack_root *rt;
1505 	int err, ret = 0, idx = 0;
1506 	struct nlattr *table_attr;
1507 	struct nlattr *entry_attr;
1508 	struct ib_device *device;
1509 	int start = cb->args[0];
1510 	bool has_cap_net_admin;
1511 	struct nlmsghdr *nlh;
1512 	unsigned long id;
1513 	u32 index, port = 0;
1514 	bool filled = false;
1515 
1516 	err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1517 				     nldev_policy, NULL);
1518 	/*
1519 	 * Right now, we are expecting the device index to get res information,
1520 	 * but it is possible to extend this code to return all devices in
1521 	 * one shot by checking the existence of RDMA_NLDEV_ATTR_DEV_INDEX.
1522 	 * if it doesn't exist, we will iterate over all devices.
1523 	 *
1524 	 * But it is not needed for now.
1525 	 */
1526 	if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1527 		return -EINVAL;
1528 
1529 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1530 	device = ib_device_get_by_index(sock_net(skb->sk), index);
1531 	if (!device)
1532 		return -EINVAL;
1533 
1534 	/*
1535 	 * If no PORT_INDEX is supplied, we will return all QPs from that device
1536 	 */
1537 	if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1538 		port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1539 		if (!rdma_is_port_valid(device, port)) {
1540 			ret = -EINVAL;
1541 			goto err_index;
1542 		}
1543 	}
1544 
1545 	nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
1546 			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1547 					 RDMA_NL_GET_OP(cb->nlh->nlmsg_type)),
1548 			0, NLM_F_MULTI);
1549 
1550 	if (!nlh || fill_nldev_handle(skb, device)) {
1551 		ret = -EMSGSIZE;
1552 		goto err;
1553 	}
1554 
1555 	table_attr = nla_nest_start_noflag(skb, fe->nldev_attr);
1556 	if (!table_attr) {
1557 		ret = -EMSGSIZE;
1558 		goto err;
1559 	}
1560 
1561 	has_cap_net_admin = netlink_capable(cb->skb, CAP_NET_ADMIN);
1562 
1563 	rt = &device->res[res_type];
1564 	xa_lock(&rt->xa);
1565 	/*
1566 	 * FIXME: if the skip ahead is something common this loop should
1567 	 * use xas_for_each & xas_pause to optimize, we can have a lot of
1568 	 * objects.
1569 	 */
1570 	xa_for_each(&rt->xa, id, res) {
1571 		if (idx < start || !rdma_restrack_get(res))
1572 			goto next;
1573 
1574 		xa_unlock(&rt->xa);
1575 
1576 		filled = true;
1577 
1578 		entry_attr = nla_nest_start_noflag(skb, fe->entry);
1579 		if (!entry_attr) {
1580 			ret = -EMSGSIZE;
1581 			rdma_restrack_put(res);
1582 			goto msg_full;
1583 		}
1584 
1585 		ret = fill_func(skb, has_cap_net_admin, res, port);
1586 
1587 		rdma_restrack_put(res);
1588 
1589 		if (ret) {
1590 			nla_nest_cancel(skb, entry_attr);
1591 			if (ret == -EMSGSIZE)
1592 				goto msg_full;
1593 			if (ret == -EAGAIN)
1594 				goto again;
1595 			goto res_err;
1596 		}
1597 		nla_nest_end(skb, entry_attr);
1598 again:		xa_lock(&rt->xa);
1599 next:		idx++;
1600 	}
1601 	xa_unlock(&rt->xa);
1602 
1603 msg_full:
1604 	nla_nest_end(skb, table_attr);
1605 	nlmsg_end(skb, nlh);
1606 	cb->args[0] = idx;
1607 
1608 	/*
1609 	 * No more entries to fill, cancel the message and
1610 	 * return 0 to mark end of dumpit.
1611 	 */
1612 	if (!filled)
1613 		goto err;
1614 
1615 	ib_device_put(device);
1616 	return skb->len;
1617 
1618 res_err:
1619 	nla_nest_cancel(skb, table_attr);
1620 
1621 err:
1622 	nlmsg_cancel(skb, nlh);
1623 
1624 err_index:
1625 	ib_device_put(device);
1626 	return ret;
1627 }
1628 
1629 #define RES_GET_FUNCS(name, type)                                              \
1630 	static int nldev_res_get_##name##_dumpit(struct sk_buff *skb,          \
1631 						 struct netlink_callback *cb)  \
1632 	{                                                                      \
1633 		return res_get_common_dumpit(skb, cb, type,                    \
1634 					     fill_res_##name##_entry);         \
1635 	}                                                                      \
1636 	static int nldev_res_get_##name##_doit(struct sk_buff *skb,            \
1637 					       struct nlmsghdr *nlh,           \
1638 					       struct netlink_ext_ack *extack) \
1639 	{                                                                      \
1640 		return res_get_common_doit(skb, nlh, extack, type,             \
1641 					   fill_res_##name##_entry);           \
1642 	}
1643 
1644 RES_GET_FUNCS(qp, RDMA_RESTRACK_QP);
1645 RES_GET_FUNCS(qp_raw, RDMA_RESTRACK_QP);
1646 RES_GET_FUNCS(cm_id, RDMA_RESTRACK_CM_ID);
1647 RES_GET_FUNCS(cq, RDMA_RESTRACK_CQ);
1648 RES_GET_FUNCS(cq_raw, RDMA_RESTRACK_CQ);
1649 RES_GET_FUNCS(pd, RDMA_RESTRACK_PD);
1650 RES_GET_FUNCS(mr, RDMA_RESTRACK_MR);
1651 RES_GET_FUNCS(mr_raw, RDMA_RESTRACK_MR);
1652 RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER);
1653 RES_GET_FUNCS(ctx, RDMA_RESTRACK_CTX);
1654 RES_GET_FUNCS(srq, RDMA_RESTRACK_SRQ);
1655 
1656 static LIST_HEAD(link_ops);
1657 static DECLARE_RWSEM(link_ops_rwsem);
1658 
link_ops_get(const char * type)1659 static const struct rdma_link_ops *link_ops_get(const char *type)
1660 {
1661 	const struct rdma_link_ops *ops;
1662 
1663 	list_for_each_entry(ops, &link_ops, list) {
1664 		if (!strcmp(ops->type, type))
1665 			goto out;
1666 	}
1667 	ops = NULL;
1668 out:
1669 	return ops;
1670 }
1671 
rdma_link_register(struct rdma_link_ops * ops)1672 void rdma_link_register(struct rdma_link_ops *ops)
1673 {
1674 	down_write(&link_ops_rwsem);
1675 	if (WARN_ON_ONCE(link_ops_get(ops->type)))
1676 		goto out;
1677 	list_add(&ops->list, &link_ops);
1678 out:
1679 	up_write(&link_ops_rwsem);
1680 }
1681 EXPORT_SYMBOL(rdma_link_register);
1682 
rdma_link_unregister(struct rdma_link_ops * ops)1683 void rdma_link_unregister(struct rdma_link_ops *ops)
1684 {
1685 	down_write(&link_ops_rwsem);
1686 	list_del(&ops->list);
1687 	up_write(&link_ops_rwsem);
1688 }
1689 EXPORT_SYMBOL(rdma_link_unregister);
1690 
nldev_newlink(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1691 static int nldev_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
1692 			  struct netlink_ext_ack *extack)
1693 {
1694 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1695 	char ibdev_name[IB_DEVICE_NAME_MAX];
1696 	const struct rdma_link_ops *ops;
1697 	char ndev_name[IFNAMSIZ];
1698 	struct net_device *ndev;
1699 	char type[IFNAMSIZ];
1700 	int err;
1701 
1702 	err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1703 				     nldev_policy, extack);
1704 	if (err || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
1705 	    !tb[RDMA_NLDEV_ATTR_LINK_TYPE] || !tb[RDMA_NLDEV_ATTR_NDEV_NAME])
1706 		return -EINVAL;
1707 
1708 	nla_strscpy(ibdev_name, tb[RDMA_NLDEV_ATTR_DEV_NAME],
1709 		    sizeof(ibdev_name));
1710 	if (strchr(ibdev_name, '%') || strlen(ibdev_name) == 0)
1711 		return -EINVAL;
1712 
1713 	nla_strscpy(type, tb[RDMA_NLDEV_ATTR_LINK_TYPE], sizeof(type));
1714 	nla_strscpy(ndev_name, tb[RDMA_NLDEV_ATTR_NDEV_NAME],
1715 		    sizeof(ndev_name));
1716 
1717 	ndev = dev_get_by_name(sock_net(skb->sk), ndev_name);
1718 	if (!ndev)
1719 		return -ENODEV;
1720 
1721 	down_read(&link_ops_rwsem);
1722 	ops = link_ops_get(type);
1723 #ifdef CONFIG_MODULES
1724 	if (!ops) {
1725 		up_read(&link_ops_rwsem);
1726 		request_module("rdma-link-%s", type);
1727 		down_read(&link_ops_rwsem);
1728 		ops = link_ops_get(type);
1729 	}
1730 #endif
1731 	err = ops ? ops->newlink(ibdev_name, ndev) : -EINVAL;
1732 	up_read(&link_ops_rwsem);
1733 	dev_put(ndev);
1734 
1735 	return err;
1736 }
1737 
nldev_dellink(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1738 static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
1739 			  struct netlink_ext_ack *extack)
1740 {
1741 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1742 	struct ib_device *device;
1743 	u32 index;
1744 	int err;
1745 
1746 	err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1747 				     nldev_policy, extack);
1748 	if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
1749 		return -EINVAL;
1750 
1751 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1752 	device = ib_device_get_by_index(sock_net(skb->sk), index);
1753 	if (!device)
1754 		return -EINVAL;
1755 
1756 	if (!(device->attrs.kernel_cap_flags & IBK_ALLOW_USER_UNREG)) {
1757 		ib_device_put(device);
1758 		return -EINVAL;
1759 	}
1760 
1761 	ib_unregister_device_and_put(device);
1762 	return 0;
1763 }
1764 
nldev_get_chardev(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1765 static int nldev_get_chardev(struct sk_buff *skb, struct nlmsghdr *nlh,
1766 			     struct netlink_ext_ack *extack)
1767 {
1768 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1769 	char client_name[RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE];
1770 	struct ib_client_nl_info data = {};
1771 	struct ib_device *ibdev = NULL;
1772 	struct sk_buff *msg;
1773 	u32 index;
1774 	int err;
1775 
1776 	err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy,
1777 			  extack);
1778 	if (err || !tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE])
1779 		return -EINVAL;
1780 
1781 	nla_strscpy(client_name, tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE],
1782 		    sizeof(client_name));
1783 
1784 	if (tb[RDMA_NLDEV_ATTR_DEV_INDEX]) {
1785 		index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
1786 		ibdev = ib_device_get_by_index(sock_net(skb->sk), index);
1787 		if (!ibdev)
1788 			return -EINVAL;
1789 
1790 		if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1791 			data.port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
1792 			if (!rdma_is_port_valid(ibdev, data.port)) {
1793 				err = -EINVAL;
1794 				goto out_put;
1795 			}
1796 		} else {
1797 			data.port = -1;
1798 		}
1799 	} else if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
1800 		return -EINVAL;
1801 	}
1802 
1803 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1804 	if (!msg) {
1805 		err = -ENOMEM;
1806 		goto out_put;
1807 	}
1808 	nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1809 			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1810 					 RDMA_NLDEV_CMD_GET_CHARDEV),
1811 			0, 0);
1812 	if (!nlh) {
1813 		err = -EMSGSIZE;
1814 		goto out_nlmsg;
1815 	}
1816 
1817 	data.nl_msg = msg;
1818 	err = ib_get_client_nl_info(ibdev, client_name, &data);
1819 	if (err)
1820 		goto out_nlmsg;
1821 
1822 	err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV,
1823 				huge_encode_dev(data.cdev->devt),
1824 				RDMA_NLDEV_ATTR_PAD);
1825 	if (err)
1826 		goto out_data;
1827 	err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV_ABI, data.abi,
1828 				RDMA_NLDEV_ATTR_PAD);
1829 	if (err)
1830 		goto out_data;
1831 	if (nla_put_string(msg, RDMA_NLDEV_ATTR_CHARDEV_NAME,
1832 			   dev_name(data.cdev))) {
1833 		err = -EMSGSIZE;
1834 		goto out_data;
1835 	}
1836 
1837 	nlmsg_end(msg, nlh);
1838 	put_device(data.cdev);
1839 	if (ibdev)
1840 		ib_device_put(ibdev);
1841 	return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1842 
1843 out_data:
1844 	put_device(data.cdev);
1845 out_nlmsg:
1846 	nlmsg_free(msg);
1847 out_put:
1848 	if (ibdev)
1849 		ib_device_put(ibdev);
1850 	return err;
1851 }
1852 
nldev_sys_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1853 static int nldev_sys_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1854 			      struct netlink_ext_ack *extack)
1855 {
1856 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1857 	struct sk_buff *msg;
1858 	int err;
1859 
1860 	err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1861 			  nldev_policy, extack);
1862 	if (err)
1863 		return err;
1864 
1865 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1866 	if (!msg)
1867 		return -ENOMEM;
1868 
1869 	nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
1870 			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1871 					 RDMA_NLDEV_CMD_SYS_GET),
1872 			0, 0);
1873 	if (!nlh) {
1874 		nlmsg_free(msg);
1875 		return -EMSGSIZE;
1876 	}
1877 
1878 	err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_NETNS_MODE,
1879 			 (u8)ib_devices_shared_netns);
1880 	if (err) {
1881 		nlmsg_free(msg);
1882 		return err;
1883 	}
1884 
1885 	/*
1886 	 * Copy-on-fork is supported.
1887 	 * See commits:
1888 	 * 70e806e4e645 ("mm: Do early cow for pinned pages during fork() for ptes")
1889 	 * 4eae4efa2c29 ("hugetlb: do early cow when page pinned on src mm")
1890 	 * for more details. Don't backport this without them.
1891 	 *
1892 	 * Return value ignored on purpose, assume copy-on-fork is not
1893 	 * supported in case of failure.
1894 	 */
1895 	nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK, 1);
1896 
1897 	nlmsg_end(msg, nlh);
1898 	return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
1899 }
1900 
nldev_set_sys_set_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)1901 static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
1902 				  struct netlink_ext_ack *extack)
1903 {
1904 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
1905 	u8 enable;
1906 	int err;
1907 
1908 	err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
1909 			  nldev_policy, extack);
1910 	if (err || !tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE])
1911 		return -EINVAL;
1912 
1913 	enable = nla_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]);
1914 	/* Only 0 and 1 are supported */
1915 	if (enable > 1)
1916 		return -EINVAL;
1917 
1918 	err = rdma_compatdev_set(enable);
1919 	return err;
1920 }
1921 
nldev_stat_set_mode_doit(struct sk_buff * msg,struct netlink_ext_ack * extack,struct nlattr * tb[],struct ib_device * device,u32 port)1922 static int nldev_stat_set_mode_doit(struct sk_buff *msg,
1923 				    struct netlink_ext_ack *extack,
1924 				    struct nlattr *tb[],
1925 				    struct ib_device *device, u32 port)
1926 {
1927 	u32 mode, mask = 0, qpn, cntn = 0;
1928 	int ret;
1929 
1930 	/* Currently only counter for QP is supported */
1931 	if (!tb[RDMA_NLDEV_ATTR_STAT_RES] ||
1932 	    nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP)
1933 		return -EINVAL;
1934 
1935 	mode = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_MODE]);
1936 	if (mode == RDMA_COUNTER_MODE_AUTO) {
1937 		if (tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK])
1938 			mask = nla_get_u32(
1939 				tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]);
1940 		return rdma_counter_set_auto_mode(device, port, mask, extack);
1941 	}
1942 
1943 	if (!tb[RDMA_NLDEV_ATTR_RES_LQPN])
1944 		return -EINVAL;
1945 
1946 	qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]);
1947 	if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) {
1948 		cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);
1949 		ret = rdma_counter_bind_qpn(device, port, qpn, cntn);
1950 		if (ret)
1951 			return ret;
1952 	} else {
1953 		ret = rdma_counter_bind_qpn_alloc(device, port, qpn, &cntn);
1954 		if (ret)
1955 			return ret;
1956 	}
1957 
1958 	if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) ||
1959 	    nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) {
1960 		ret = -EMSGSIZE;
1961 		goto err_fill;
1962 	}
1963 
1964 	return 0;
1965 
1966 err_fill:
1967 	rdma_counter_unbind_qpn(device, port, qpn, cntn);
1968 	return ret;
1969 }
1970 
nldev_stat_set_counter_dynamic_doit(struct nlattr * tb[],struct ib_device * device,u32 port)1971 static int nldev_stat_set_counter_dynamic_doit(struct nlattr *tb[],
1972 					       struct ib_device *device,
1973 					       u32 port)
1974 {
1975 	struct rdma_hw_stats *stats;
1976 	struct nlattr *entry_attr;
1977 	unsigned long *target;
1978 	int rem, i, ret = 0;
1979 	u32 index;
1980 
1981 	stats = ib_get_hw_stats_port(device, port);
1982 	if (!stats)
1983 		return -EINVAL;
1984 
1985 	target = kcalloc(BITS_TO_LONGS(stats->num_counters),
1986 			 sizeof(*stats->is_disabled), GFP_KERNEL);
1987 	if (!target)
1988 		return -ENOMEM;
1989 
1990 	nla_for_each_nested(entry_attr, tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS],
1991 			    rem) {
1992 		index = nla_get_u32(entry_attr);
1993 		if ((index >= stats->num_counters) ||
1994 		    !(stats->descs[index].flags & IB_STAT_FLAG_OPTIONAL)) {
1995 			ret = -EINVAL;
1996 			goto out;
1997 		}
1998 
1999 		set_bit(index, target);
2000 	}
2001 
2002 	for (i = 0; i < stats->num_counters; i++) {
2003 		if (!(stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL))
2004 			continue;
2005 
2006 		ret = rdma_counter_modify(device, port, i, test_bit(i, target));
2007 		if (ret)
2008 			goto out;
2009 	}
2010 
2011 out:
2012 	kfree(target);
2013 	return ret;
2014 }
2015 
nldev_stat_set_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)2016 static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
2017 			       struct netlink_ext_ack *extack)
2018 {
2019 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2020 	struct ib_device *device;
2021 	struct sk_buff *msg;
2022 	u32 index, port;
2023 	int ret;
2024 
2025 	ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy,
2026 			  extack);
2027 	if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
2028 	    !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2029 		return -EINVAL;
2030 
2031 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2032 	device = ib_device_get_by_index(sock_net(skb->sk), index);
2033 	if (!device)
2034 		return -EINVAL;
2035 
2036 	port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2037 	if (!rdma_is_port_valid(device, port)) {
2038 		ret = -EINVAL;
2039 		goto err_put_device;
2040 	}
2041 
2042 	if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] &&
2043 	    !tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS]) {
2044 		ret = -EINVAL;
2045 		goto err_put_device;
2046 	}
2047 
2048 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2049 	if (!msg) {
2050 		ret = -ENOMEM;
2051 		goto err_put_device;
2052 	}
2053 	nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2054 			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2055 					 RDMA_NLDEV_CMD_STAT_SET),
2056 			0, 0);
2057 	if (!nlh || fill_nldev_handle(msg, device) ||
2058 	    nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) {
2059 		ret = -EMSGSIZE;
2060 		goto err_free_msg;
2061 	}
2062 
2063 	if (tb[RDMA_NLDEV_ATTR_STAT_MODE]) {
2064 		ret = nldev_stat_set_mode_doit(msg, extack, tb, device, port);
2065 		if (ret)
2066 			goto err_free_msg;
2067 	}
2068 
2069 	if (tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS]) {
2070 		ret = nldev_stat_set_counter_dynamic_doit(tb, device, port);
2071 		if (ret)
2072 			goto err_free_msg;
2073 	}
2074 
2075 	nlmsg_end(msg, nlh);
2076 	ib_device_put(device);
2077 	return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2078 
2079 err_free_msg:
2080 	nlmsg_free(msg);
2081 err_put_device:
2082 	ib_device_put(device);
2083 	return ret;
2084 }
2085 
nldev_stat_del_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)2086 static int nldev_stat_del_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
2087 			       struct netlink_ext_ack *extack)
2088 {
2089 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2090 	struct ib_device *device;
2091 	struct sk_buff *msg;
2092 	u32 index, port, qpn, cntn;
2093 	int ret;
2094 
2095 	ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2096 			  nldev_policy, extack);
2097 	if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] ||
2098 	    !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX] ||
2099 	    !tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID] ||
2100 	    !tb[RDMA_NLDEV_ATTR_RES_LQPN])
2101 		return -EINVAL;
2102 
2103 	if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP)
2104 		return -EINVAL;
2105 
2106 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2107 	device = ib_device_get_by_index(sock_net(skb->sk), index);
2108 	if (!device)
2109 		return -EINVAL;
2110 
2111 	port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2112 	if (!rdma_is_port_valid(device, port)) {
2113 		ret = -EINVAL;
2114 		goto err;
2115 	}
2116 
2117 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2118 	if (!msg) {
2119 		ret = -ENOMEM;
2120 		goto err;
2121 	}
2122 	nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2123 			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2124 					 RDMA_NLDEV_CMD_STAT_SET),
2125 			0, 0);
2126 	if (!nlh) {
2127 		ret = -EMSGSIZE;
2128 		goto err_fill;
2129 	}
2130 
2131 	cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);
2132 	qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]);
2133 	if (fill_nldev_handle(msg, device) ||
2134 	    nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) ||
2135 	    nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) ||
2136 	    nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) {
2137 		ret = -EMSGSIZE;
2138 		goto err_fill;
2139 	}
2140 
2141 	ret = rdma_counter_unbind_qpn(device, port, qpn, cntn);
2142 	if (ret)
2143 		goto err_fill;
2144 
2145 	nlmsg_end(msg, nlh);
2146 	ib_device_put(device);
2147 	return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2148 
2149 err_fill:
2150 	nlmsg_free(msg);
2151 err:
2152 	ib_device_put(device);
2153 	return ret;
2154 }
2155 
stat_get_doit_default_counter(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack,struct nlattr * tb[])2156 static int stat_get_doit_default_counter(struct sk_buff *skb,
2157 					 struct nlmsghdr *nlh,
2158 					 struct netlink_ext_ack *extack,
2159 					 struct nlattr *tb[])
2160 {
2161 	struct rdma_hw_stats *stats;
2162 	struct nlattr *table_attr;
2163 	struct ib_device *device;
2164 	int ret, num_cnts, i;
2165 	struct sk_buff *msg;
2166 	u32 index, port;
2167 	u64 v;
2168 
2169 	if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2170 		return -EINVAL;
2171 
2172 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2173 	device = ib_device_get_by_index(sock_net(skb->sk), index);
2174 	if (!device)
2175 		return -EINVAL;
2176 
2177 	if (!device->ops.alloc_hw_port_stats || !device->ops.get_hw_stats) {
2178 		ret = -EINVAL;
2179 		goto err;
2180 	}
2181 
2182 	port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2183 	stats = ib_get_hw_stats_port(device, port);
2184 	if (!stats) {
2185 		ret = -EINVAL;
2186 		goto err;
2187 	}
2188 
2189 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2190 	if (!msg) {
2191 		ret = -ENOMEM;
2192 		goto err;
2193 	}
2194 
2195 	nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2196 			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2197 					 RDMA_NLDEV_CMD_STAT_GET),
2198 			0, 0);
2199 
2200 	if (!nlh || fill_nldev_handle(msg, device) ||
2201 	    nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) {
2202 		ret = -EMSGSIZE;
2203 		goto err_msg;
2204 	}
2205 
2206 	mutex_lock(&stats->lock);
2207 
2208 	num_cnts = device->ops.get_hw_stats(device, stats, port, 0);
2209 	if (num_cnts < 0) {
2210 		ret = -EINVAL;
2211 		goto err_stats;
2212 	}
2213 
2214 	table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
2215 	if (!table_attr) {
2216 		ret = -EMSGSIZE;
2217 		goto err_stats;
2218 	}
2219 	for (i = 0; i < num_cnts; i++) {
2220 		if (test_bit(i, stats->is_disabled))
2221 			continue;
2222 
2223 		v = stats->value[i] +
2224 			rdma_counter_get_hwstat_value(device, port, i);
2225 		if (rdma_nl_stat_hwcounter_entry(msg,
2226 						 stats->descs[i].name, v)) {
2227 			ret = -EMSGSIZE;
2228 			goto err_table;
2229 		}
2230 	}
2231 	nla_nest_end(msg, table_attr);
2232 
2233 	mutex_unlock(&stats->lock);
2234 	nlmsg_end(msg, nlh);
2235 	ib_device_put(device);
2236 	return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2237 
2238 err_table:
2239 	nla_nest_cancel(msg, table_attr);
2240 err_stats:
2241 	mutex_unlock(&stats->lock);
2242 err_msg:
2243 	nlmsg_free(msg);
2244 err:
2245 	ib_device_put(device);
2246 	return ret;
2247 }
2248 
stat_get_doit_qp(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack,struct nlattr * tb[])2249 static int stat_get_doit_qp(struct sk_buff *skb, struct nlmsghdr *nlh,
2250 			    struct netlink_ext_ack *extack, struct nlattr *tb[])
2251 
2252 {
2253 	static enum rdma_nl_counter_mode mode;
2254 	static enum rdma_nl_counter_mask mask;
2255 	struct ib_device *device;
2256 	struct sk_buff *msg;
2257 	u32 index, port;
2258 	int ret;
2259 
2260 	if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID])
2261 		return nldev_res_get_counter_doit(skb, nlh, extack);
2262 
2263 	if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] ||
2264 	    !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2265 		return -EINVAL;
2266 
2267 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2268 	device = ib_device_get_by_index(sock_net(skb->sk), index);
2269 	if (!device)
2270 		return -EINVAL;
2271 
2272 	port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2273 	if (!rdma_is_port_valid(device, port)) {
2274 		ret = -EINVAL;
2275 		goto err;
2276 	}
2277 
2278 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2279 	if (!msg) {
2280 		ret = -ENOMEM;
2281 		goto err;
2282 	}
2283 
2284 	nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2285 			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
2286 					 RDMA_NLDEV_CMD_STAT_GET),
2287 			0, 0);
2288 	if (!nlh) {
2289 		ret = -EMSGSIZE;
2290 		goto err_msg;
2291 	}
2292 
2293 	ret = rdma_counter_get_mode(device, port, &mode, &mask);
2294 	if (ret)
2295 		goto err_msg;
2296 
2297 	if (fill_nldev_handle(msg, device) ||
2298 	    nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) ||
2299 	    nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, mode)) {
2300 		ret = -EMSGSIZE;
2301 		goto err_msg;
2302 	}
2303 
2304 	if ((mode == RDMA_COUNTER_MODE_AUTO) &&
2305 	    nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, mask)) {
2306 		ret = -EMSGSIZE;
2307 		goto err_msg;
2308 	}
2309 
2310 	nlmsg_end(msg, nlh);
2311 	ib_device_put(device);
2312 	return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2313 
2314 err_msg:
2315 	nlmsg_free(msg);
2316 err:
2317 	ib_device_put(device);
2318 	return ret;
2319 }
2320 
nldev_stat_get_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)2321 static int nldev_stat_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
2322 			       struct netlink_ext_ack *extack)
2323 {
2324 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2325 	int ret;
2326 
2327 	ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2328 			  nldev_policy, extack);
2329 	if (ret)
2330 		return -EINVAL;
2331 
2332 	if (!tb[RDMA_NLDEV_ATTR_STAT_RES])
2333 		return stat_get_doit_default_counter(skb, nlh, extack, tb);
2334 
2335 	switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) {
2336 	case RDMA_NLDEV_ATTR_RES_QP:
2337 		ret = stat_get_doit_qp(skb, nlh, extack, tb);
2338 		break;
2339 	case RDMA_NLDEV_ATTR_RES_MR:
2340 		ret = res_get_common_doit(skb, nlh, extack, RDMA_RESTRACK_MR,
2341 					  fill_stat_mr_entry);
2342 		break;
2343 	default:
2344 		ret = -EINVAL;
2345 		break;
2346 	}
2347 
2348 	return ret;
2349 }
2350 
nldev_stat_get_dumpit(struct sk_buff * skb,struct netlink_callback * cb)2351 static int nldev_stat_get_dumpit(struct sk_buff *skb,
2352 				 struct netlink_callback *cb)
2353 {
2354 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
2355 	int ret;
2356 
2357 	ret = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2358 			  nldev_policy, NULL);
2359 	if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES])
2360 		return -EINVAL;
2361 
2362 	switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) {
2363 	case RDMA_NLDEV_ATTR_RES_QP:
2364 		ret = nldev_res_get_counter_dumpit(skb, cb);
2365 		break;
2366 	case RDMA_NLDEV_ATTR_RES_MR:
2367 		ret = res_get_common_dumpit(skb, cb, RDMA_RESTRACK_MR,
2368 					    fill_stat_mr_entry);
2369 		break;
2370 	default:
2371 		ret = -EINVAL;
2372 		break;
2373 	}
2374 
2375 	return ret;
2376 }
2377 
nldev_stat_get_counter_status_doit(struct sk_buff * skb,struct nlmsghdr * nlh,struct netlink_ext_ack * extack)2378 static int nldev_stat_get_counter_status_doit(struct sk_buff *skb,
2379 					      struct nlmsghdr *nlh,
2380 					      struct netlink_ext_ack *extack)
2381 {
2382 	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX], *table, *entry;
2383 	struct rdma_hw_stats *stats;
2384 	struct ib_device *device;
2385 	struct sk_buff *msg;
2386 	u32 devid, port;
2387 	int ret, i;
2388 
2389 	ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
2390 			  nldev_policy, extack);
2391 	if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
2392 	    !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
2393 		return -EINVAL;
2394 
2395 	devid = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
2396 	device = ib_device_get_by_index(sock_net(skb->sk), devid);
2397 	if (!device)
2398 		return -EINVAL;
2399 
2400 	port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
2401 	if (!rdma_is_port_valid(device, port)) {
2402 		ret = -EINVAL;
2403 		goto err;
2404 	}
2405 
2406 	stats = ib_get_hw_stats_port(device, port);
2407 	if (!stats) {
2408 		ret = -EINVAL;
2409 		goto err;
2410 	}
2411 
2412 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2413 	if (!msg) {
2414 		ret = -ENOMEM;
2415 		goto err;
2416 	}
2417 
2418 	nlh = nlmsg_put(
2419 		msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
2420 		RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_STAT_GET_STATUS),
2421 		0, 0);
2422 
2423 	ret = -EMSGSIZE;
2424 	if (!nlh || fill_nldev_handle(msg, device) ||
2425 	    nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port))
2426 		goto err_msg;
2427 
2428 	table = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
2429 	if (!table)
2430 		goto err_msg;
2431 
2432 	mutex_lock(&stats->lock);
2433 	for (i = 0; i < stats->num_counters; i++) {
2434 		entry = nla_nest_start(msg,
2435 				       RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY);
2436 		if (!entry)
2437 			goto err_msg_table;
2438 
2439 		if (nla_put_string(msg,
2440 				   RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME,
2441 				   stats->descs[i].name) ||
2442 		    nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_INDEX, i))
2443 			goto err_msg_entry;
2444 
2445 		if ((stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) &&
2446 		    (nla_put_u8(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC,
2447 				!test_bit(i, stats->is_disabled))))
2448 			goto err_msg_entry;
2449 
2450 		nla_nest_end(msg, entry);
2451 	}
2452 	mutex_unlock(&stats->lock);
2453 
2454 	nla_nest_end(msg, table);
2455 	nlmsg_end(msg, nlh);
2456 	ib_device_put(device);
2457 	return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
2458 
2459 err_msg_entry:
2460 	nla_nest_cancel(msg, entry);
2461 err_msg_table:
2462 	mutex_unlock(&stats->lock);
2463 	nla_nest_cancel(msg, table);
2464 err_msg:
2465 	nlmsg_free(msg);
2466 err:
2467 	ib_device_put(device);
2468 	return ret;
2469 }
2470 
2471 static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
2472 	[RDMA_NLDEV_CMD_GET] = {
2473 		.doit = nldev_get_doit,
2474 		.dump = nldev_get_dumpit,
2475 	},
2476 	[RDMA_NLDEV_CMD_GET_CHARDEV] = {
2477 		.doit = nldev_get_chardev,
2478 	},
2479 	[RDMA_NLDEV_CMD_SET] = {
2480 		.doit = nldev_set_doit,
2481 		.flags = RDMA_NL_ADMIN_PERM,
2482 	},
2483 	[RDMA_NLDEV_CMD_NEWLINK] = {
2484 		.doit = nldev_newlink,
2485 		.flags = RDMA_NL_ADMIN_PERM,
2486 	},
2487 	[RDMA_NLDEV_CMD_DELLINK] = {
2488 		.doit = nldev_dellink,
2489 		.flags = RDMA_NL_ADMIN_PERM,
2490 	},
2491 	[RDMA_NLDEV_CMD_PORT_GET] = {
2492 		.doit = nldev_port_get_doit,
2493 		.dump = nldev_port_get_dumpit,
2494 	},
2495 	[RDMA_NLDEV_CMD_RES_GET] = {
2496 		.doit = nldev_res_get_doit,
2497 		.dump = nldev_res_get_dumpit,
2498 	},
2499 	[RDMA_NLDEV_CMD_RES_QP_GET] = {
2500 		.doit = nldev_res_get_qp_doit,
2501 		.dump = nldev_res_get_qp_dumpit,
2502 	},
2503 	[RDMA_NLDEV_CMD_RES_CM_ID_GET] = {
2504 		.doit = nldev_res_get_cm_id_doit,
2505 		.dump = nldev_res_get_cm_id_dumpit,
2506 	},
2507 	[RDMA_NLDEV_CMD_RES_CQ_GET] = {
2508 		.doit = nldev_res_get_cq_doit,
2509 		.dump = nldev_res_get_cq_dumpit,
2510 	},
2511 	[RDMA_NLDEV_CMD_RES_MR_GET] = {
2512 		.doit = nldev_res_get_mr_doit,
2513 		.dump = nldev_res_get_mr_dumpit,
2514 	},
2515 	[RDMA_NLDEV_CMD_RES_PD_GET] = {
2516 		.doit = nldev_res_get_pd_doit,
2517 		.dump = nldev_res_get_pd_dumpit,
2518 	},
2519 	[RDMA_NLDEV_CMD_RES_CTX_GET] = {
2520 		.doit = nldev_res_get_ctx_doit,
2521 		.dump = nldev_res_get_ctx_dumpit,
2522 	},
2523 	[RDMA_NLDEV_CMD_RES_SRQ_GET] = {
2524 		.doit = nldev_res_get_srq_doit,
2525 		.dump = nldev_res_get_srq_dumpit,
2526 	},
2527 	[RDMA_NLDEV_CMD_SYS_GET] = {
2528 		.doit = nldev_sys_get_doit,
2529 	},
2530 	[RDMA_NLDEV_CMD_SYS_SET] = {
2531 		.doit = nldev_set_sys_set_doit,
2532 		.flags = RDMA_NL_ADMIN_PERM,
2533 	},
2534 	[RDMA_NLDEV_CMD_STAT_SET] = {
2535 		.doit = nldev_stat_set_doit,
2536 		.flags = RDMA_NL_ADMIN_PERM,
2537 	},
2538 	[RDMA_NLDEV_CMD_STAT_GET] = {
2539 		.doit = nldev_stat_get_doit,
2540 		.dump = nldev_stat_get_dumpit,
2541 	},
2542 	[RDMA_NLDEV_CMD_STAT_DEL] = {
2543 		.doit = nldev_stat_del_doit,
2544 		.flags = RDMA_NL_ADMIN_PERM,
2545 	},
2546 	[RDMA_NLDEV_CMD_RES_QP_GET_RAW] = {
2547 		.doit = nldev_res_get_qp_raw_doit,
2548 		.dump = nldev_res_get_qp_raw_dumpit,
2549 		.flags = RDMA_NL_ADMIN_PERM,
2550 	},
2551 	[RDMA_NLDEV_CMD_RES_CQ_GET_RAW] = {
2552 		.doit = nldev_res_get_cq_raw_doit,
2553 		.dump = nldev_res_get_cq_raw_dumpit,
2554 		.flags = RDMA_NL_ADMIN_PERM,
2555 	},
2556 	[RDMA_NLDEV_CMD_RES_MR_GET_RAW] = {
2557 		.doit = nldev_res_get_mr_raw_doit,
2558 		.dump = nldev_res_get_mr_raw_dumpit,
2559 		.flags = RDMA_NL_ADMIN_PERM,
2560 	},
2561 	[RDMA_NLDEV_CMD_STAT_GET_STATUS] = {
2562 		.doit = nldev_stat_get_counter_status_doit,
2563 	},
2564 };
2565 
nldev_init(void)2566 void __init nldev_init(void)
2567 {
2568 	rdma_nl_register(RDMA_NL_NLDEV, nldev_cb_table);
2569 }
2570 
nldev_exit(void)2571 void nldev_exit(void)
2572 {
2573 	rdma_nl_unregister(RDMA_NL_NLDEV);
2574 }
2575 
2576 MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5);
2577