Loading...
1/*
2 * Copyright (c) 2015, Mellanox Technologies inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33#include <linux/configfs.h>
34#include <rdma/ib_verbs.h>
35#include <rdma/rdma_cm.h>
36
37#include "core_priv.h"
38#include "cma_priv.h"
39
40struct cma_device;
41
42struct cma_dev_group;
43
44struct cma_dev_port_group {
45 u32 port_num;
46 struct cma_dev_group *cma_dev_group;
47 struct config_group group;
48};
49
50struct cma_dev_group {
51 char name[IB_DEVICE_NAME_MAX];
52 struct config_group device_group;
53 struct config_group ports_group;
54 struct cma_dev_port_group *ports;
55};
56
57static struct cma_dev_port_group *to_dev_port_group(struct config_item *item)
58{
59 struct config_group *group;
60
61 if (!item)
62 return NULL;
63
64 group = container_of(item, struct config_group, cg_item);
65 return container_of(group, struct cma_dev_port_group, group);
66}
67
68static bool filter_by_name(struct ib_device *ib_dev, void *cookie)
69{
70 return !strcmp(dev_name(&ib_dev->dev), cookie);
71}
72
73static int cma_configfs_params_get(struct config_item *item,
74 struct cma_device **pcma_dev,
75 struct cma_dev_port_group **pgroup)
76{
77 struct cma_dev_port_group *group = to_dev_port_group(item);
78 struct cma_device *cma_dev;
79
80 if (!group)
81 return -ENODEV;
82
83 cma_dev = cma_enum_devices_by_ibdev(filter_by_name,
84 group->cma_dev_group->name);
85 if (!cma_dev)
86 return -ENODEV;
87
88 *pcma_dev = cma_dev;
89 *pgroup = group;
90
91 return 0;
92}
93
94static void cma_configfs_params_put(struct cma_device *cma_dev)
95{
96 cma_dev_put(cma_dev);
97}
98
99static ssize_t default_roce_mode_show(struct config_item *item,
100 char *buf)
101{
102 struct cma_device *cma_dev;
103 struct cma_dev_port_group *group;
104 int gid_type;
105 ssize_t ret;
106
107 ret = cma_configfs_params_get(item, &cma_dev, &group);
108 if (ret)
109 return ret;
110
111 gid_type = cma_get_default_gid_type(cma_dev, group->port_num);
112 cma_configfs_params_put(cma_dev);
113
114 if (gid_type < 0)
115 return gid_type;
116
117 return sysfs_emit(buf, "%s\n", ib_cache_gid_type_str(gid_type));
118}
119
120static ssize_t default_roce_mode_store(struct config_item *item,
121 const char *buf, size_t count)
122{
123 struct cma_device *cma_dev;
124 struct cma_dev_port_group *group;
125 int gid_type;
126 ssize_t ret;
127
128 ret = cma_configfs_params_get(item, &cma_dev, &group);
129 if (ret)
130 return ret;
131
132 gid_type = ib_cache_gid_parse_type_str(buf);
133 if (gid_type < 0) {
134 cma_configfs_params_put(cma_dev);
135 return -EINVAL;
136 }
137
138 ret = cma_set_default_gid_type(cma_dev, group->port_num, gid_type);
139
140 cma_configfs_params_put(cma_dev);
141
142 return !ret ? strnlen(buf, count) : ret;
143}
144
145CONFIGFS_ATTR(, default_roce_mode);
146
147static ssize_t default_roce_tos_show(struct config_item *item, char *buf)
148{
149 struct cma_device *cma_dev;
150 struct cma_dev_port_group *group;
151 ssize_t ret;
152 u8 tos;
153
154 ret = cma_configfs_params_get(item, &cma_dev, &group);
155 if (ret)
156 return ret;
157
158 tos = cma_get_default_roce_tos(cma_dev, group->port_num);
159 cma_configfs_params_put(cma_dev);
160
161 return sysfs_emit(buf, "%u\n", tos);
162}
163
164static ssize_t default_roce_tos_store(struct config_item *item,
165 const char *buf, size_t count)
166{
167 struct cma_device *cma_dev;
168 struct cma_dev_port_group *group;
169 ssize_t ret;
170 u8 tos;
171
172 ret = kstrtou8(buf, 0, &tos);
173 if (ret)
174 return ret;
175
176 ret = cma_configfs_params_get(item, &cma_dev, &group);
177 if (ret)
178 return ret;
179
180 ret = cma_set_default_roce_tos(cma_dev, group->port_num, tos);
181 cma_configfs_params_put(cma_dev);
182
183 return ret ? ret : strnlen(buf, count);
184}
185
186CONFIGFS_ATTR(, default_roce_tos);
187
188static struct configfs_attribute *cma_configfs_attributes[] = {
189 &attr_default_roce_mode,
190 &attr_default_roce_tos,
191 NULL,
192};
193
194static const struct config_item_type cma_port_group_type = {
195 .ct_attrs = cma_configfs_attributes,
196 .ct_owner = THIS_MODULE
197};
198
199static int make_cma_ports(struct cma_dev_group *cma_dev_group,
200 struct cma_device *cma_dev)
201{
202 struct cma_dev_port_group *ports;
203 struct ib_device *ibdev;
204 u32 ports_num;
205 u32 i;
206
207 ibdev = cma_get_ib_dev(cma_dev);
208
209 if (!ibdev)
210 return -ENODEV;
211
212 ports_num = ibdev->phys_port_cnt;
213 ports = kcalloc(ports_num, sizeof(*cma_dev_group->ports),
214 GFP_KERNEL);
215
216 if (!ports)
217 return -ENOMEM;
218
219 for (i = 0; i < ports_num; i++) {
220 char port_str[11];
221
222 ports[i].port_num = i + 1;
223 snprintf(port_str, sizeof(port_str), "%u", i + 1);
224 ports[i].cma_dev_group = cma_dev_group;
225 config_group_init_type_name(&ports[i].group,
226 port_str,
227 &cma_port_group_type);
228 configfs_add_default_group(&ports[i].group,
229 &cma_dev_group->ports_group);
230
231 }
232 cma_dev_group->ports = ports;
233 return 0;
234}
235
236static void release_cma_dev(struct config_item *item)
237{
238 struct config_group *group = container_of(item, struct config_group,
239 cg_item);
240 struct cma_dev_group *cma_dev_group = container_of(group,
241 struct cma_dev_group,
242 device_group);
243
244 kfree(cma_dev_group);
245};
246
247static void release_cma_ports_group(struct config_item *item)
248{
249 struct config_group *group = container_of(item, struct config_group,
250 cg_item);
251 struct cma_dev_group *cma_dev_group = container_of(group,
252 struct cma_dev_group,
253 ports_group);
254
255 kfree(cma_dev_group->ports);
256 cma_dev_group->ports = NULL;
257};
258
259static struct configfs_item_operations cma_ports_item_ops = {
260 .release = release_cma_ports_group
261};
262
263static const struct config_item_type cma_ports_group_type = {
264 .ct_item_ops = &cma_ports_item_ops,
265 .ct_owner = THIS_MODULE
266};
267
268static struct configfs_item_operations cma_device_item_ops = {
269 .release = release_cma_dev
270};
271
272static const struct config_item_type cma_device_group_type = {
273 .ct_item_ops = &cma_device_item_ops,
274 .ct_owner = THIS_MODULE
275};
276
277static struct config_group *make_cma_dev(struct config_group *group,
278 const char *name)
279{
280 int err = -ENODEV;
281 struct cma_device *cma_dev = cma_enum_devices_by_ibdev(filter_by_name,
282 (void *)name);
283 struct cma_dev_group *cma_dev_group = NULL;
284
285 if (!cma_dev)
286 goto fail;
287
288 cma_dev_group = kzalloc(sizeof(*cma_dev_group), GFP_KERNEL);
289
290 if (!cma_dev_group) {
291 err = -ENOMEM;
292 goto fail;
293 }
294
295 strscpy(cma_dev_group->name, name, sizeof(cma_dev_group->name));
296
297 config_group_init_type_name(&cma_dev_group->ports_group, "ports",
298 &cma_ports_group_type);
299
300 err = make_cma_ports(cma_dev_group, cma_dev);
301 if (err)
302 goto fail;
303
304 config_group_init_type_name(&cma_dev_group->device_group, name,
305 &cma_device_group_type);
306 configfs_add_default_group(&cma_dev_group->ports_group,
307 &cma_dev_group->device_group);
308
309 cma_dev_put(cma_dev);
310 return &cma_dev_group->device_group;
311
312fail:
313 if (cma_dev)
314 cma_dev_put(cma_dev);
315 kfree(cma_dev_group);
316 return ERR_PTR(err);
317}
318
319static void drop_cma_dev(struct config_group *cgroup, struct config_item *item)
320{
321 struct config_group *group =
322 container_of(item, struct config_group, cg_item);
323 struct cma_dev_group *cma_dev_group =
324 container_of(group, struct cma_dev_group, device_group);
325
326 configfs_remove_default_groups(&cma_dev_group->ports_group);
327 configfs_remove_default_groups(&cma_dev_group->device_group);
328 config_item_put(item);
329}
330
331static struct configfs_group_operations cma_subsys_group_ops = {
332 .make_group = make_cma_dev,
333 .drop_item = drop_cma_dev,
334};
335
336static const struct config_item_type cma_subsys_type = {
337 .ct_group_ops = &cma_subsys_group_ops,
338 .ct_owner = THIS_MODULE,
339};
340
341static struct configfs_subsystem cma_subsys = {
342 .su_group = {
343 .cg_item = {
344 .ci_namebuf = "rdma_cm",
345 .ci_type = &cma_subsys_type,
346 },
347 },
348};
349
350int __init cma_configfs_init(void)
351{
352 int ret;
353
354 config_group_init(&cma_subsys.su_group);
355 mutex_init(&cma_subsys.su_mutex);
356 ret = configfs_register_subsystem(&cma_subsys);
357 if (ret)
358 mutex_destroy(&cma_subsys.su_mutex);
359 return ret;
360}
361
362void __exit cma_configfs_exit(void)
363{
364 configfs_unregister_subsystem(&cma_subsys);
365 mutex_destroy(&cma_subsys.su_mutex);
366}
1/*
2 * Copyright (c) 2015, Mellanox Technologies inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33#include <linux/module.h>
34#include <linux/configfs.h>
35#include <rdma/ib_verbs.h>
36#include "core_priv.h"
37
38struct cma_device;
39
40struct cma_dev_group;
41
42struct cma_dev_port_group {
43 unsigned int port_num;
44 struct cma_dev_group *cma_dev_group;
45 struct config_group group;
46};
47
48struct cma_dev_group {
49 char name[IB_DEVICE_NAME_MAX];
50 struct config_group device_group;
51 struct config_group ports_group;
52 struct cma_dev_port_group *ports;
53};
54
55static struct cma_dev_port_group *to_dev_port_group(struct config_item *item)
56{
57 struct config_group *group;
58
59 if (!item)
60 return NULL;
61
62 group = container_of(item, struct config_group, cg_item);
63 return container_of(group, struct cma_dev_port_group, group);
64}
65
66static bool filter_by_name(struct ib_device *ib_dev, void *cookie)
67{
68 return !strcmp(ib_dev->name, cookie);
69}
70
71static int cma_configfs_params_get(struct config_item *item,
72 struct cma_device **pcma_dev,
73 struct cma_dev_port_group **pgroup)
74{
75 struct cma_dev_port_group *group = to_dev_port_group(item);
76 struct cma_device *cma_dev;
77
78 if (!group)
79 return -ENODEV;
80
81 cma_dev = cma_enum_devices_by_ibdev(filter_by_name,
82 group->cma_dev_group->name);
83 if (!cma_dev)
84 return -ENODEV;
85
86 *pcma_dev = cma_dev;
87 *pgroup = group;
88
89 return 0;
90}
91
92static void cma_configfs_params_put(struct cma_device *cma_dev)
93{
94 cma_deref_dev(cma_dev);
95}
96
97static ssize_t default_roce_mode_show(struct config_item *item,
98 char *buf)
99{
100 struct cma_device *cma_dev;
101 struct cma_dev_port_group *group;
102 int gid_type;
103 ssize_t ret;
104
105 ret = cma_configfs_params_get(item, &cma_dev, &group);
106 if (ret)
107 return ret;
108
109 gid_type = cma_get_default_gid_type(cma_dev, group->port_num);
110 cma_configfs_params_put(cma_dev);
111
112 if (gid_type < 0)
113 return gid_type;
114
115 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_type));
116}
117
118static ssize_t default_roce_mode_store(struct config_item *item,
119 const char *buf, size_t count)
120{
121 struct cma_device *cma_dev;
122 struct cma_dev_port_group *group;
123 int gid_type = ib_cache_gid_parse_type_str(buf);
124 ssize_t ret;
125
126 if (gid_type < 0)
127 return -EINVAL;
128
129 ret = cma_configfs_params_get(item, &cma_dev, &group);
130 if (ret)
131 return ret;
132
133 ret = cma_set_default_gid_type(cma_dev, group->port_num, gid_type);
134
135 cma_configfs_params_put(cma_dev);
136
137 return !ret ? strnlen(buf, count) : ret;
138}
139
140CONFIGFS_ATTR(, default_roce_mode);
141
142static struct configfs_attribute *cma_configfs_attributes[] = {
143 &attr_default_roce_mode,
144 NULL,
145};
146
147static struct config_item_type cma_port_group_type = {
148 .ct_attrs = cma_configfs_attributes,
149 .ct_owner = THIS_MODULE
150};
151
152static int make_cma_ports(struct cma_dev_group *cma_dev_group,
153 struct cma_device *cma_dev)
154{
155 struct ib_device *ibdev;
156 unsigned int i;
157 unsigned int ports_num;
158 struct cma_dev_port_group *ports;
159 int err;
160
161 ibdev = cma_get_ib_dev(cma_dev);
162
163 if (!ibdev)
164 return -ENODEV;
165
166 ports_num = ibdev->phys_port_cnt;
167 ports = kcalloc(ports_num, sizeof(*cma_dev_group->ports),
168 GFP_KERNEL);
169
170 if (!ports) {
171 err = -ENOMEM;
172 goto free;
173 }
174
175 for (i = 0; i < ports_num; i++) {
176 char port_str[10];
177
178 ports[i].port_num = i + 1;
179 snprintf(port_str, sizeof(port_str), "%u", i + 1);
180 ports[i].cma_dev_group = cma_dev_group;
181 config_group_init_type_name(&ports[i].group,
182 port_str,
183 &cma_port_group_type);
184 configfs_add_default_group(&ports[i].group,
185 &cma_dev_group->ports_group);
186
187 }
188 cma_dev_group->ports = ports;
189
190 return 0;
191free:
192 kfree(ports);
193 cma_dev_group->ports = NULL;
194 return err;
195}
196
197static void release_cma_dev(struct config_item *item)
198{
199 struct config_group *group = container_of(item, struct config_group,
200 cg_item);
201 struct cma_dev_group *cma_dev_group = container_of(group,
202 struct cma_dev_group,
203 device_group);
204
205 kfree(cma_dev_group);
206};
207
208static void release_cma_ports_group(struct config_item *item)
209{
210 struct config_group *group = container_of(item, struct config_group,
211 cg_item);
212 struct cma_dev_group *cma_dev_group = container_of(group,
213 struct cma_dev_group,
214 ports_group);
215
216 kfree(cma_dev_group->ports);
217 cma_dev_group->ports = NULL;
218};
219
220static struct configfs_item_operations cma_ports_item_ops = {
221 .release = release_cma_ports_group
222};
223
224static struct config_item_type cma_ports_group_type = {
225 .ct_item_ops = &cma_ports_item_ops,
226 .ct_owner = THIS_MODULE
227};
228
229static struct configfs_item_operations cma_device_item_ops = {
230 .release = release_cma_dev
231};
232
233static struct config_item_type cma_device_group_type = {
234 .ct_item_ops = &cma_device_item_ops,
235 .ct_owner = THIS_MODULE
236};
237
238static struct config_group *make_cma_dev(struct config_group *group,
239 const char *name)
240{
241 int err = -ENODEV;
242 struct cma_device *cma_dev = cma_enum_devices_by_ibdev(filter_by_name,
243 (void *)name);
244 struct cma_dev_group *cma_dev_group = NULL;
245
246 if (!cma_dev)
247 goto fail;
248
249 cma_dev_group = kzalloc(sizeof(*cma_dev_group), GFP_KERNEL);
250
251 if (!cma_dev_group) {
252 err = -ENOMEM;
253 goto fail;
254 }
255
256 strncpy(cma_dev_group->name, name, sizeof(cma_dev_group->name));
257
258 config_group_init_type_name(&cma_dev_group->ports_group, "ports",
259 &cma_ports_group_type);
260
261 err = make_cma_ports(cma_dev_group, cma_dev);
262 if (err)
263 goto fail;
264
265 config_group_init_type_name(&cma_dev_group->device_group, name,
266 &cma_device_group_type);
267 configfs_add_default_group(&cma_dev_group->ports_group,
268 &cma_dev_group->device_group);
269
270 cma_deref_dev(cma_dev);
271 return &cma_dev_group->device_group;
272
273fail:
274 if (cma_dev)
275 cma_deref_dev(cma_dev);
276 kfree(cma_dev_group);
277 return ERR_PTR(err);
278}
279
280static struct configfs_group_operations cma_subsys_group_ops = {
281 .make_group = make_cma_dev,
282};
283
284static struct config_item_type cma_subsys_type = {
285 .ct_group_ops = &cma_subsys_group_ops,
286 .ct_owner = THIS_MODULE,
287};
288
289static struct configfs_subsystem cma_subsys = {
290 .su_group = {
291 .cg_item = {
292 .ci_namebuf = "rdma_cm",
293 .ci_type = &cma_subsys_type,
294 },
295 },
296};
297
298int __init cma_configfs_init(void)
299{
300 config_group_init(&cma_subsys.su_group);
301 mutex_init(&cma_subsys.su_mutex);
302 return configfs_register_subsystem(&cma_subsys);
303}
304
305void __exit cma_configfs_exit(void)
306{
307 configfs_unregister_subsystem(&cma_subsys);
308}