Commit | Line | Data |
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37923ed6 DA |
1 | /* |
2 | * Copyright (c) 2018 Cumulus Networks. All rights reserved. | |
3 | * Copyright (c) 2018 David Ahern <dsa@cumulusnetworks.com> | |
8fb4bc6f | 4 | * Copyright (c) 2019 Mellanox Technologies. All rights reserved. |
37923ed6 DA |
5 | * |
6 | * This software is licensed under the GNU General License Version 2, | |
7 | * June 1991 as shown in the file COPYING in the top-level directory of this | |
8 | * source tree. | |
9 | * | |
10 | * THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" | |
11 | * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, | |
12 | * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
13 | * FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE | |
14 | * OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME | |
15 | * THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. | |
16 | */ | |
17 | ||
d514f41e | 18 | #include <linux/debugfs.h> |
37923ed6 | 19 | #include <linux/device.h> |
da58f90f IS |
20 | #include <linux/etherdevice.h> |
21 | #include <linux/inet.h> | |
22 | #include <linux/jiffies.h> | |
23 | #include <linux/kernel.h> | |
8320d145 | 24 | #include <linux/list.h> |
794b2c05 | 25 | #include <linux/mutex.h> |
514cf64c | 26 | #include <linux/random.h> |
5fc49422 | 27 | #include <linux/rtnetlink.h> |
da58f90f | 28 | #include <linux/workqueue.h> |
37923ed6 | 29 | #include <net/devlink.h> |
da58f90f | 30 | #include <net/ip.h> |
d3cbb907 | 31 | #include <net/flow_offload.h> |
da58f90f IS |
32 | #include <uapi/linux/devlink.h> |
33 | #include <uapi/linux/ip.h> | |
34 | #include <uapi/linux/udp.h> | |
37923ed6 DA |
35 | |
36 | #include "netdevsim.h" | |
37 | ||
814b9ce6 DL |
38 | static unsigned int |
39 | nsim_dev_port_index(enum nsim_dev_port_type type, unsigned int port_index) | |
40 | { | |
41 | switch (type) { | |
42 | case NSIM_DEV_PORT_TYPE_VF: | |
43 | port_index = NSIM_DEV_VF_PORT_INDEX_BASE + port_index; | |
44 | break; | |
45 | case NSIM_DEV_PORT_TYPE_PF: | |
46 | break; | |
47 | } | |
48 | ||
49 | return port_index; | |
50 | } | |
51 | ||
52 | static inline unsigned int nsim_dev_port_index_to_vf_index(unsigned int port_index) | |
53 | { | |
54 | return port_index - NSIM_DEV_VF_PORT_INDEX_BASE; | |
55 | } | |
56 | ||
d514f41e JP |
57 | static struct dentry *nsim_dev_ddir; |
58 | ||
5e388f3d JK |
59 | unsigned int nsim_dev_get_vfs(struct nsim_dev *nsim_dev) |
60 | { | |
61 | WARN_ON(!lockdep_rtnl_is_held() && | |
aff3a925 | 62 | !devl_lock_is_held(priv_to_devlink(nsim_dev))); |
5e388f3d JK |
63 | |
64 | return nsim_dev->nsim_bus_dev->num_vfs; | |
65 | } | |
66 | ||
1c401078 JK |
67 | static void |
68 | nsim_bus_dev_set_vfs(struct nsim_bus_dev *nsim_bus_dev, unsigned int num_vfs) | |
69 | { | |
70 | rtnl_lock(); | |
71 | nsim_bus_dev->num_vfs = num_vfs; | |
72 | rtnl_unlock(); | |
73 | } | |
74 | ||
4418f862 JP |
75 | #define NSIM_DEV_DUMMY_REGION_SIZE (1024 * 32) |
76 | ||
3fe0fd53 | 77 | static int |
d4602a9f AL |
78 | nsim_dev_take_snapshot(struct devlink *devlink, |
79 | const struct devlink_region_ops *ops, | |
80 | struct netlink_ext_ack *extack, | |
3fe0fd53 JK |
81 | u8 **data) |
82 | { | |
83 | void *dummy_data; | |
84 | ||
85 | dummy_data = kmalloc(NSIM_DEV_DUMMY_REGION_SIZE, GFP_KERNEL); | |
86 | if (!dummy_data) | |
87 | return -ENOMEM; | |
88 | ||
89 | get_random_bytes(dummy_data, NSIM_DEV_DUMMY_REGION_SIZE); | |
90 | ||
91 | *data = dummy_data; | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
4418f862 JP |
96 | static ssize_t nsim_dev_take_snapshot_write(struct file *file, |
97 | const char __user *data, | |
98 | size_t count, loff_t *ppos) | |
99 | { | |
100 | struct nsim_dev *nsim_dev = file->private_data; | |
12102436 | 101 | struct devlink *devlink; |
3fe0fd53 | 102 | u8 *dummy_data; |
4418f862 JP |
103 | int err; |
104 | u32 id; | |
105 | ||
12102436 JK |
106 | devlink = priv_to_devlink(nsim_dev); |
107 | ||
d4602a9f | 108 | err = nsim_dev_take_snapshot(devlink, NULL, NULL, &dummy_data); |
3fe0fd53 JK |
109 | if (err) |
110 | return err; | |
4418f862 | 111 | |
12102436 | 112 | err = devlink_region_snapshot_id_get(devlink, &id); |
7ef19d3b JK |
113 | if (err) { |
114 | pr_err("Failed to get snapshot id\n"); | |
3902baf9 | 115 | kfree(dummy_data); |
7ef19d3b JK |
116 | return err; |
117 | } | |
4418f862 | 118 | err = devlink_region_snapshot_create(nsim_dev->dummy_region, |
a0a09f6b | 119 | dummy_data, id); |
12102436 | 120 | devlink_region_snapshot_id_put(devlink, id); |
4418f862 JP |
121 | if (err) { |
122 | pr_err("Failed to create region snapshot\n"); | |
123 | kfree(dummy_data); | |
124 | return err; | |
125 | } | |
126 | ||
127 | return count; | |
128 | } | |
129 | ||
130 | static const struct file_operations nsim_dev_take_snapshot_fops = { | |
131 | .open = simple_open, | |
132 | .write = nsim_dev_take_snapshot_write, | |
133 | .llseek = generic_file_llseek, | |
a5bbcbf2 | 134 | .owner = THIS_MODULE, |
4418f862 JP |
135 | }; |
136 | ||
d3cbb907 JP |
137 | static ssize_t nsim_dev_trap_fa_cookie_read(struct file *file, |
138 | char __user *data, | |
139 | size_t count, loff_t *ppos) | |
140 | { | |
141 | struct nsim_dev *nsim_dev = file->private_data; | |
142 | struct flow_action_cookie *fa_cookie; | |
143 | unsigned int buf_len; | |
144 | ssize_t ret; | |
145 | char *buf; | |
146 | ||
147 | spin_lock(&nsim_dev->fa_cookie_lock); | |
148 | fa_cookie = nsim_dev->fa_cookie; | |
149 | if (!fa_cookie) { | |
150 | ret = -EINVAL; | |
151 | goto errout; | |
152 | } | |
153 | buf_len = fa_cookie->cookie_len * 2; | |
154 | buf = kmalloc(buf_len, GFP_ATOMIC); | |
155 | if (!buf) { | |
156 | ret = -ENOMEM; | |
157 | goto errout; | |
158 | } | |
159 | bin2hex(buf, fa_cookie->cookie, fa_cookie->cookie_len); | |
160 | spin_unlock(&nsim_dev->fa_cookie_lock); | |
161 | ||
162 | ret = simple_read_from_buffer(data, count, ppos, buf, buf_len); | |
163 | ||
164 | kfree(buf); | |
165 | return ret; | |
166 | ||
167 | errout: | |
168 | spin_unlock(&nsim_dev->fa_cookie_lock); | |
169 | return ret; | |
170 | } | |
171 | ||
172 | static ssize_t nsim_dev_trap_fa_cookie_write(struct file *file, | |
173 | const char __user *data, | |
174 | size_t count, loff_t *ppos) | |
175 | { | |
176 | struct nsim_dev *nsim_dev = file->private_data; | |
177 | struct flow_action_cookie *fa_cookie; | |
178 | size_t cookie_len; | |
179 | ssize_t ret; | |
180 | char *buf; | |
181 | ||
182 | if (*ppos != 0) | |
183 | return -EINVAL; | |
184 | cookie_len = (count - 1) / 2; | |
185 | if ((count - 1) % 2) | |
186 | return -EINVAL; | |
d3cbb907 | 187 | |
f72207a5 DC |
188 | buf = memdup_user(data, count); |
189 | if (IS_ERR(buf)) | |
190 | return PTR_ERR(buf); | |
d3cbb907 JP |
191 | |
192 | fa_cookie = kmalloc(sizeof(*fa_cookie) + cookie_len, | |
193 | GFP_KERNEL | __GFP_NOWARN); | |
194 | if (!fa_cookie) { | |
195 | ret = -ENOMEM; | |
196 | goto free_buf; | |
197 | } | |
198 | ||
199 | fa_cookie->cookie_len = cookie_len; | |
200 | ret = hex2bin(fa_cookie->cookie, buf, cookie_len); | |
201 | if (ret) | |
202 | goto free_fa_cookie; | |
203 | kfree(buf); | |
204 | ||
205 | spin_lock(&nsim_dev->fa_cookie_lock); | |
206 | kfree(nsim_dev->fa_cookie); | |
207 | nsim_dev->fa_cookie = fa_cookie; | |
208 | spin_unlock(&nsim_dev->fa_cookie_lock); | |
209 | ||
210 | return count; | |
211 | ||
212 | free_fa_cookie: | |
213 | kfree(fa_cookie); | |
214 | free_buf: | |
215 | kfree(buf); | |
216 | return ret; | |
217 | } | |
218 | ||
219 | static const struct file_operations nsim_dev_trap_fa_cookie_fops = { | |
220 | .open = simple_open, | |
221 | .read = nsim_dev_trap_fa_cookie_read, | |
222 | .write = nsim_dev_trap_fa_cookie_write, | |
223 | .llseek = generic_file_llseek, | |
a5bbcbf2 | 224 | .owner = THIS_MODULE, |
d3cbb907 JP |
225 | }; |
226 | ||
a3353ec3 JK |
227 | static ssize_t nsim_bus_dev_max_vfs_read(struct file *file, char __user *data, |
228 | size_t count, loff_t *ppos) | |
229 | { | |
230 | struct nsim_dev *nsim_dev = file->private_data; | |
231 | char buf[11]; | |
232 | ssize_t len; | |
233 | ||
234 | len = scnprintf(buf, sizeof(buf), "%u\n", | |
235 | READ_ONCE(nsim_dev->nsim_bus_dev->max_vfs)); | |
236 | ||
237 | return simple_read_from_buffer(data, count, ppos, buf, len); | |
238 | } | |
239 | ||
240 | static ssize_t nsim_bus_dev_max_vfs_write(struct file *file, | |
241 | const char __user *data, | |
242 | size_t count, loff_t *ppos) | |
243 | { | |
244 | struct nsim_vf_config *vfconfigs; | |
245 | struct nsim_dev *nsim_dev; | |
246 | char buf[10]; | |
247 | ssize_t ret; | |
248 | u32 val; | |
249 | ||
250 | if (*ppos != 0) | |
251 | return 0; | |
252 | ||
253 | if (count >= sizeof(buf)) | |
254 | return -ENOSPC; | |
255 | ||
256 | ret = copy_from_user(buf, data, count); | |
257 | if (ret) | |
258 | return -EFAULT; | |
259 | buf[count] = '\0'; | |
260 | ||
261 | ret = kstrtouint(buf, 10, &val); | |
262 | if (ret) | |
263 | return -EINVAL; | |
264 | ||
265 | /* max_vfs limited by the maximum number of provided port indexes */ | |
266 | if (val > NSIM_DEV_VF_PORT_INDEX_MAX - NSIM_DEV_VF_PORT_INDEX_BASE) | |
267 | return -ERANGE; | |
268 | ||
269 | vfconfigs = kcalloc(val, sizeof(struct nsim_vf_config), | |
270 | GFP_KERNEL | __GFP_NOWARN); | |
271 | if (!vfconfigs) | |
272 | return -ENOMEM; | |
273 | ||
274 | nsim_dev = file->private_data; | |
aff3a925 | 275 | devl_lock(priv_to_devlink(nsim_dev)); |
a3353ec3 JK |
276 | /* Reject if VFs are configured */ |
277 | if (nsim_dev_get_vfs(nsim_dev)) { | |
278 | ret = -EBUSY; | |
279 | } else { | |
280 | swap(nsim_dev->vfconfigs, vfconfigs); | |
281 | WRITE_ONCE(nsim_dev->nsim_bus_dev->max_vfs, val); | |
282 | *ppos += count; | |
283 | ret = count; | |
284 | } | |
aff3a925 | 285 | devl_unlock(priv_to_devlink(nsim_dev)); |
a3353ec3 JK |
286 | |
287 | kfree(vfconfigs); | |
288 | return ret; | |
289 | } | |
290 | ||
d3953819 DL |
291 | static const struct file_operations nsim_dev_max_vfs_fops = { |
292 | .open = simple_open, | |
293 | .read = nsim_bus_dev_max_vfs_read, | |
294 | .write = nsim_bus_dev_max_vfs_write, | |
295 | .llseek = generic_file_llseek, | |
296 | .owner = THIS_MODULE, | |
297 | }; | |
298 | ||
d514f41e JP |
299 | static int nsim_dev_debugfs_init(struct nsim_dev *nsim_dev) |
300 | { | |
6fb8852b | 301 | char dev_ddir_name[sizeof(DRV_NAME) + 10]; |
f3d101b4 | 302 | int err; |
d514f41e | 303 | |
ab1d0cc0 | 304 | sprintf(dev_ddir_name, DRV_NAME "%u", nsim_dev->nsim_bus_dev->dev.id); |
d514f41e | 305 | nsim_dev->ddir = debugfs_create_dir(dev_ddir_name, nsim_dev_ddir); |
6556ff32 TY |
306 | if (IS_ERR(nsim_dev->ddir)) |
307 | return PTR_ERR(nsim_dev->ddir); | |
ab1d0cc0 | 308 | nsim_dev->ports_ddir = debugfs_create_dir("ports", nsim_dev->ddir); |
a6aa8d0c ZS |
309 | if (IS_ERR(nsim_dev->ports_ddir)) { |
310 | err = PTR_ERR(nsim_dev->ports_ddir); | |
311 | goto err_ddir; | |
312 | } | |
fa4dfc4a JP |
313 | debugfs_create_bool("fw_update_status", 0600, nsim_dev->ddir, |
314 | &nsim_dev->fw_update_status); | |
cbb58368 JK |
315 | debugfs_create_u32("fw_update_overwrite_mask", 0600, nsim_dev->ddir, |
316 | &nsim_dev->fw_update_overwrite_mask); | |
150e8f8a JP |
317 | debugfs_create_u32("max_macs", 0600, nsim_dev->ddir, |
318 | &nsim_dev->max_macs); | |
319 | debugfs_create_bool("test1", 0600, nsim_dev->ddir, | |
320 | &nsim_dev->test1); | |
8526ad96 TY |
321 | nsim_dev->take_snapshot = debugfs_create_file("take_snapshot", |
322 | 0200, | |
323 | nsim_dev->ddir, | |
324 | nsim_dev, | |
325 | &nsim_dev_take_snapshot_fops); | |
155ddfc5 JP |
326 | debugfs_create_bool("dont_allow_reload", 0600, nsim_dev->ddir, |
327 | &nsim_dev->dont_allow_reload); | |
328 | debugfs_create_bool("fail_reload", 0600, nsim_dev->ddir, | |
329 | &nsim_dev->fail_reload); | |
d3cbb907 JP |
330 | debugfs_create_file("trap_flow_action_cookie", 0600, nsim_dev->ddir, |
331 | nsim_dev, &nsim_dev_trap_fa_cookie_fops); | |
0dc8249a IS |
332 | debugfs_create_bool("fail_trap_group_set", 0600, |
333 | nsim_dev->ddir, | |
334 | &nsim_dev->fail_trap_group_set); | |
ad188458 IS |
335 | debugfs_create_bool("fail_trap_policer_set", 0600, |
336 | nsim_dev->ddir, | |
337 | &nsim_dev->fail_trap_policer_set); | |
338 | debugfs_create_bool("fail_trap_policer_counter_get", 0600, | |
339 | nsim_dev->ddir, | |
340 | &nsim_dev->fail_trap_policer_counter_get); | |
aff3a925 | 341 | /* caution, dev_max_vfs write takes devlink lock */ |
ba064e4c | 342 | debugfs_create_file("max_vfs", 0600, nsim_dev->ddir, |
5e388f3d | 343 | nsim_dev, &nsim_dev_max_vfs_fops); |
ba064e4c | 344 | |
885226f5 | 345 | nsim_dev->nodes_ddir = debugfs_create_dir("rate_nodes", nsim_dev->ddir); |
f3d101b4 DL |
346 | if (IS_ERR(nsim_dev->nodes_ddir)) { |
347 | err = PTR_ERR(nsim_dev->nodes_ddir); | |
a6aa8d0c | 348 | goto err_ports_ddir; |
f3d101b4 | 349 | } |
275b51c2 | 350 | debugfs_create_bool("fail_trap_drop_counter_get", 0600, |
a7b3527a | 351 | nsim_dev->ddir, |
275b51c2 | 352 | &nsim_dev->fail_trap_drop_counter_get); |
424be63a | 353 | nsim_udp_tunnels_debugfs_create(nsim_dev); |
d514f41e | 354 | return 0; |
f3d101b4 | 355 | |
a6aa8d0c | 356 | err_ports_ddir: |
f3d101b4 | 357 | debugfs_remove_recursive(nsim_dev->ports_ddir); |
a6aa8d0c | 358 | err_ddir: |
f3d101b4 DL |
359 | debugfs_remove_recursive(nsim_dev->ddir); |
360 | return err; | |
d514f41e JP |
361 | } |
362 | ||
363 | static void nsim_dev_debugfs_exit(struct nsim_dev *nsim_dev) | |
364 | { | |
885226f5 | 365 | debugfs_remove_recursive(nsim_dev->nodes_ddir); |
ab1d0cc0 | 366 | debugfs_remove_recursive(nsim_dev->ports_ddir); |
d514f41e JP |
367 | debugfs_remove_recursive(nsim_dev->ddir); |
368 | } | |
369 | ||
f3d101b4 DL |
370 | static ssize_t nsim_dev_rate_parent_read(struct file *file, |
371 | char __user *data, | |
372 | size_t count, loff_t *ppos) | |
373 | { | |
374 | char **name_ptr = file->private_data; | |
375 | size_t len; | |
376 | ||
377 | if (!*name_ptr) | |
378 | return 0; | |
379 | ||
380 | len = strlen(*name_ptr); | |
381 | return simple_read_from_buffer(data, count, ppos, *name_ptr, len); | |
382 | } | |
383 | ||
384 | static const struct file_operations nsim_dev_rate_parent_fops = { | |
385 | .open = simple_open, | |
386 | .read = nsim_dev_rate_parent_read, | |
387 | .llseek = generic_file_llseek, | |
388 | .owner = THIS_MODULE, | |
389 | }; | |
390 | ||
8320d145 JP |
391 | static int nsim_dev_port_debugfs_init(struct nsim_dev *nsim_dev, |
392 | struct nsim_dev_port *nsim_dev_port) | |
393 | { | |
605c4f8f DL |
394 | struct nsim_bus_dev *nsim_bus_dev = nsim_dev->nsim_bus_dev; |
395 | unsigned int port_index = nsim_dev_port->port_index; | |
8320d145 JP |
396 | char port_ddir_name[16]; |
397 | char dev_link_name[32]; | |
398 | ||
605c4f8f | 399 | sprintf(port_ddir_name, "%u", port_index); |
8320d145 JP |
400 | nsim_dev_port->ddir = debugfs_create_dir(port_ddir_name, |
401 | nsim_dev->ports_ddir); | |
6556ff32 TY |
402 | if (IS_ERR(nsim_dev_port->ddir)) |
403 | return PTR_ERR(nsim_dev_port->ddir); | |
8320d145 | 404 | |
605c4f8f DL |
405 | sprintf(dev_link_name, "../../../" DRV_NAME "%u", nsim_bus_dev->dev.id); |
406 | if (nsim_dev_port_is_vf(nsim_dev_port)) { | |
407 | unsigned int vf_id = nsim_dev_port_index_to_vf_index(port_index); | |
408 | ||
409 | debugfs_create_u16("tx_share", 0400, nsim_dev_port->ddir, | |
5e388f3d | 410 | &nsim_dev->vfconfigs[vf_id].min_tx_rate); |
605c4f8f | 411 | debugfs_create_u16("tx_max", 0400, nsim_dev_port->ddir, |
5e388f3d | 412 | &nsim_dev->vfconfigs[vf_id].max_tx_rate); |
f3d101b4 DL |
413 | nsim_dev_port->rate_parent = debugfs_create_file("rate_parent", |
414 | 0400, | |
415 | nsim_dev_port->ddir, | |
416 | &nsim_dev_port->parent_name, | |
417 | &nsim_dev_rate_parent_fops); | |
605c4f8f | 418 | } |
8320d145 JP |
419 | debugfs_create_symlink("dev", nsim_dev_port->ddir, dev_link_name); |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
424 | static void nsim_dev_port_debugfs_exit(struct nsim_dev_port *nsim_dev_port) | |
425 | { | |
426 | debugfs_remove_recursive(nsim_dev_port->ddir); | |
427 | } | |
428 | ||
8fb4bc6f | 429 | static int nsim_dev_resources_register(struct devlink *devlink) |
37923ed6 DA |
430 | { |
431 | struct devlink_resource_size_params params = { | |
432 | .size_max = (u64)-1, | |
433 | .size_granularity = 1, | |
434 | .unit = DEVLINK_RESOURCE_UNIT_ENTRY | |
435 | }; | |
37923ed6 | 436 | int err; |
37923ed6 DA |
437 | |
438 | /* Resources for IPv4 */ | |
012ec02a JP |
439 | err = devl_resource_register(devlink, "IPv4", (u64)-1, |
440 | NSIM_RESOURCE_IPV4, | |
441 | DEVLINK_RESOURCE_ID_PARENT_TOP, | |
442 | ¶ms); | |
37923ed6 DA |
443 | if (err) { |
444 | pr_err("Failed to register IPv4 top resource\n"); | |
6b1da9f7 | 445 | goto err_out; |
37923ed6 DA |
446 | } |
447 | ||
012ec02a JP |
448 | err = devl_resource_register(devlink, "fib", (u64)-1, |
449 | NSIM_RESOURCE_IPV4_FIB, | |
450 | NSIM_RESOURCE_IPV4, ¶ms); | |
37923ed6 DA |
451 | if (err) { |
452 | pr_err("Failed to register IPv4 FIB resource\n"); | |
6b1da9f7 | 453 | goto err_out; |
37923ed6 DA |
454 | } |
455 | ||
012ec02a JP |
456 | err = devl_resource_register(devlink, "fib-rules", (u64)-1, |
457 | NSIM_RESOURCE_IPV4_FIB_RULES, | |
458 | NSIM_RESOURCE_IPV4, ¶ms); | |
37923ed6 DA |
459 | if (err) { |
460 | pr_err("Failed to register IPv4 FIB rules resource\n"); | |
6b1da9f7 | 461 | goto err_out; |
37923ed6 DA |
462 | } |
463 | ||
464 | /* Resources for IPv6 */ | |
012ec02a JP |
465 | err = devl_resource_register(devlink, "IPv6", (u64)-1, |
466 | NSIM_RESOURCE_IPV6, | |
467 | DEVLINK_RESOURCE_ID_PARENT_TOP, | |
468 | ¶ms); | |
37923ed6 DA |
469 | if (err) { |
470 | pr_err("Failed to register IPv6 top resource\n"); | |
6b1da9f7 | 471 | goto err_out; |
37923ed6 DA |
472 | } |
473 | ||
012ec02a JP |
474 | err = devl_resource_register(devlink, "fib", (u64)-1, |
475 | NSIM_RESOURCE_IPV6_FIB, | |
476 | NSIM_RESOURCE_IPV6, ¶ms); | |
37923ed6 DA |
477 | if (err) { |
478 | pr_err("Failed to register IPv6 FIB resource\n"); | |
6b1da9f7 | 479 | goto err_out; |
37923ed6 DA |
480 | } |
481 | ||
012ec02a JP |
482 | err = devl_resource_register(devlink, "fib-rules", (u64)-1, |
483 | NSIM_RESOURCE_IPV6_FIB_RULES, | |
484 | NSIM_RESOURCE_IPV6, ¶ms); | |
37923ed6 DA |
485 | if (err) { |
486 | pr_err("Failed to register IPv6 FIB rules resource\n"); | |
6b1da9f7 | 487 | goto err_out; |
37923ed6 | 488 | } |
fc56be47 | 489 | |
35266255 | 490 | /* Resources for nexthops */ |
012ec02a JP |
491 | err = devl_resource_register(devlink, "nexthops", (u64)-1, |
492 | NSIM_RESOURCE_NEXTHOPS, | |
493 | DEVLINK_RESOURCE_ID_PARENT_TOP, | |
494 | ¶ms); | |
6b1da9f7 ZS |
495 | if (err) { |
496 | pr_err("Failed to register NEXTHOPS resource\n"); | |
497 | goto err_out; | |
498 | } | |
499 | return 0; | |
35266255 | 500 | |
6b1da9f7 ZS |
501 | err_out: |
502 | devl_resources_unregister(devlink); | |
37923ed6 DA |
503 | return err; |
504 | } | |
505 | ||
150e8f8a JP |
506 | enum nsim_devlink_param_id { |
507 | NSIM_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX, | |
508 | NSIM_DEVLINK_PARAM_ID_TEST1, | |
509 | }; | |
510 | ||
511 | static const struct devlink_param nsim_devlink_params[] = { | |
512 | DEVLINK_PARAM_GENERIC(MAX_MACS, | |
513 | BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), | |
514 | NULL, NULL, NULL), | |
515 | DEVLINK_PARAM_DRIVER(NSIM_DEVLINK_PARAM_ID_TEST1, | |
516 | "test1", DEVLINK_PARAM_TYPE_BOOL, | |
517 | BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), | |
518 | NULL, NULL, NULL), | |
519 | }; | |
520 | ||
521 | static void nsim_devlink_set_params_init_values(struct nsim_dev *nsim_dev, | |
522 | struct devlink *devlink) | |
523 | { | |
524 | union devlink_param_value value; | |
525 | ||
526 | value.vu32 = nsim_dev->max_macs; | |
075935f0 JP |
527 | devl_param_driverinit_value_set(devlink, |
528 | DEVLINK_PARAM_GENERIC_ID_MAX_MACS, | |
529 | value); | |
150e8f8a | 530 | value.vbool = nsim_dev->test1; |
075935f0 JP |
531 | devl_param_driverinit_value_set(devlink, |
532 | NSIM_DEVLINK_PARAM_ID_TEST1, | |
533 | value); | |
150e8f8a JP |
534 | } |
535 | ||
536 | static void nsim_devlink_param_load_driverinit_values(struct devlink *devlink) | |
537 | { | |
538 | struct nsim_dev *nsim_dev = devlink_priv(devlink); | |
539 | union devlink_param_value saved_value; | |
540 | int err; | |
541 | ||
075935f0 JP |
542 | err = devl_param_driverinit_value_get(devlink, |
543 | DEVLINK_PARAM_GENERIC_ID_MAX_MACS, | |
544 | &saved_value); | |
150e8f8a JP |
545 | if (!err) |
546 | nsim_dev->max_macs = saved_value.vu32; | |
075935f0 JP |
547 | err = devl_param_driverinit_value_get(devlink, |
548 | NSIM_DEVLINK_PARAM_ID_TEST1, | |
549 | &saved_value); | |
150e8f8a JP |
550 | if (!err) |
551 | nsim_dev->test1 = saved_value.vbool; | |
552 | } | |
553 | ||
4418f862 JP |
554 | #define NSIM_DEV_DUMMY_REGION_SNAPSHOT_MAX 16 |
555 | ||
e8937681 JK |
556 | static const struct devlink_region_ops dummy_region_ops = { |
557 | .name = "dummy", | |
a0a09f6b | 558 | .destructor = &kfree, |
3fe0fd53 | 559 | .snapshot = nsim_dev_take_snapshot, |
e8937681 JK |
560 | }; |
561 | ||
4418f862 JP |
562 | static int nsim_dev_dummy_region_init(struct nsim_dev *nsim_dev, |
563 | struct devlink *devlink) | |
564 | { | |
565 | nsim_dev->dummy_region = | |
012ec02a JP |
566 | devl_region_create(devlink, &dummy_region_ops, |
567 | NSIM_DEV_DUMMY_REGION_SNAPSHOT_MAX, | |
568 | NSIM_DEV_DUMMY_REGION_SIZE); | |
4418f862 JP |
569 | return PTR_ERR_OR_ZERO(nsim_dev->dummy_region); |
570 | } | |
571 | ||
572 | static void nsim_dev_dummy_region_exit(struct nsim_dev *nsim_dev) | |
573 | { | |
012ec02a | 574 | devl_region_destroy(nsim_dev->dummy_region); |
4418f862 JP |
575 | } |
576 | ||
aff3a925 JK |
577 | static int |
578 | __nsim_dev_port_add(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type, | |
579 | unsigned int port_index); | |
160dc373 | 580 | static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port); |
1c401078 JK |
581 | |
582 | static int nsim_esw_legacy_enable(struct nsim_dev *nsim_dev, | |
583 | struct netlink_ext_ack *extack) | |
160dc373 | 584 | { |
885226f5 | 585 | struct devlink *devlink = priv_to_devlink(nsim_dev); |
160dc373 DL |
586 | struct nsim_dev_port *nsim_dev_port, *tmp; |
587 | ||
aff3a925 | 588 | devl_rate_nodes_destroy(devlink); |
160dc373 DL |
589 | list_for_each_entry_safe(nsim_dev_port, tmp, &nsim_dev->port_list, list) |
590 | if (nsim_dev_port_is_vf(nsim_dev_port)) | |
591 | __nsim_dev_port_del(nsim_dev_port); | |
160dc373 DL |
592 | nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY; |
593 | return 0; | |
594 | } | |
595 | ||
1c401078 JK |
596 | static int nsim_esw_switchdev_enable(struct nsim_dev *nsim_dev, |
597 | struct netlink_ext_ack *extack) | |
160dc373 | 598 | { |
aff3a925 | 599 | struct nsim_dev_port *nsim_dev_port, *tmp; |
160dc373 DL |
600 | int i, err; |
601 | ||
5e388f3d | 602 | for (i = 0; i < nsim_dev_get_vfs(nsim_dev); i++) { |
aff3a925 | 603 | err = __nsim_dev_port_add(nsim_dev, NSIM_DEV_PORT_TYPE_VF, i); |
160dc373 DL |
604 | if (err) { |
605 | NL_SET_ERR_MSG_MOD(extack, "Failed to initialize VFs' netdevsim ports"); | |
606 | pr_err("Failed to initialize VF id=%d. %d.\n", i, err); | |
607 | goto err_port_add_vfs; | |
608 | } | |
609 | } | |
610 | nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_SWITCHDEV; | |
611 | return 0; | |
612 | ||
613 | err_port_add_vfs: | |
aff3a925 JK |
614 | list_for_each_entry_safe(nsim_dev_port, tmp, &nsim_dev->port_list, list) |
615 | if (nsim_dev_port_is_vf(nsim_dev_port)) | |
616 | __nsim_dev_port_del(nsim_dev_port); | |
160dc373 DL |
617 | return err; |
618 | } | |
619 | ||
620 | static int nsim_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode, | |
621 | struct netlink_ext_ack *extack) | |
622 | { | |
623 | struct nsim_dev *nsim_dev = devlink_priv(devlink); | |
160dc373 | 624 | |
160dc373 | 625 | if (mode == nsim_dev->esw_mode) |
14e426bf | 626 | return 0; |
160dc373 DL |
627 | |
628 | if (mode == DEVLINK_ESWITCH_MODE_LEGACY) | |
14e426bf JK |
629 | return nsim_esw_legacy_enable(nsim_dev, extack); |
630 | if (mode == DEVLINK_ESWITCH_MODE_SWITCHDEV) | |
631 | return nsim_esw_switchdev_enable(nsim_dev, extack); | |
632 | ||
633 | return -EINVAL; | |
160dc373 DL |
634 | } |
635 | ||
636 | static int nsim_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode) | |
637 | { | |
638 | struct nsim_dev *nsim_dev = devlink_priv(devlink); | |
639 | ||
640 | *mode = nsim_dev->esw_mode; | |
641 | return 0; | |
642 | } | |
643 | ||
da58f90f IS |
644 | struct nsim_trap_item { |
645 | void *trap_ctx; | |
646 | enum devlink_trap_action action; | |
647 | }; | |
648 | ||
649 | struct nsim_trap_data { | |
650 | struct delayed_work trap_report_dw; | |
651 | struct nsim_trap_item *trap_items_arr; | |
ad188458 | 652 | u64 *trap_policers_cnt_arr; |
a7b3527a | 653 | u64 trap_pkt_cnt; |
da58f90f IS |
654 | struct nsim_dev *nsim_dev; |
655 | spinlock_t trap_lock; /* Protects trap_items_arr */ | |
656 | }; | |
657 | ||
9e087457 | 658 | /* All driver-specific traps must be documented in |
04e4272c | 659 | * Documentation/networking/devlink/netdevsim.rst |
9e087457 | 660 | */ |
da58f90f IS |
661 | enum { |
662 | NSIM_TRAP_ID_BASE = DEVLINK_TRAP_GENERIC_ID_MAX, | |
663 | NSIM_TRAP_ID_FID_MISS, | |
664 | }; | |
665 | ||
666 | #define NSIM_TRAP_NAME_FID_MISS "fid_miss" | |
667 | ||
668 | #define NSIM_TRAP_METADATA DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT | |
669 | ||
670 | #define NSIM_TRAP_DROP(_id, _group_id) \ | |
671 | DEVLINK_TRAP_GENERIC(DROP, DROP, _id, \ | |
107f1678 | 672 | DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \ |
da58f90f | 673 | NSIM_TRAP_METADATA) |
d3cbb907 JP |
674 | #define NSIM_TRAP_DROP_EXT(_id, _group_id, _metadata) \ |
675 | DEVLINK_TRAP_GENERIC(DROP, DROP, _id, \ | |
107f1678 | 676 | DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \ |
d3cbb907 | 677 | NSIM_TRAP_METADATA | (_metadata)) |
da58f90f IS |
678 | #define NSIM_TRAP_EXCEPTION(_id, _group_id) \ |
679 | DEVLINK_TRAP_GENERIC(EXCEPTION, TRAP, _id, \ | |
107f1678 | 680 | DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \ |
da58f90f | 681 | NSIM_TRAP_METADATA) |
18979367 IS |
682 | #define NSIM_TRAP_CONTROL(_id, _group_id, _action) \ |
683 | DEVLINK_TRAP_GENERIC(CONTROL, _action, _id, \ | |
684 | DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \ | |
685 | NSIM_TRAP_METADATA) | |
da58f90f IS |
686 | #define NSIM_TRAP_DRIVER_EXCEPTION(_id, _group_id) \ |
687 | DEVLINK_TRAP_DRIVER(EXCEPTION, TRAP, NSIM_TRAP_ID_##_id, \ | |
688 | NSIM_TRAP_NAME_##_id, \ | |
107f1678 | 689 | DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \ |
da58f90f IS |
690 | NSIM_TRAP_METADATA) |
691 | ||
ad188458 IS |
692 | #define NSIM_DEV_TRAP_POLICER_MIN_RATE 1 |
693 | #define NSIM_DEV_TRAP_POLICER_MAX_RATE 8000 | |
694 | #define NSIM_DEV_TRAP_POLICER_MIN_BURST 8 | |
695 | #define NSIM_DEV_TRAP_POLICER_MAX_BURST 65536 | |
696 | ||
697 | #define NSIM_TRAP_POLICER(_id, _rate, _burst) \ | |
698 | DEVLINK_TRAP_POLICER(_id, _rate, _burst, \ | |
699 | NSIM_DEV_TRAP_POLICER_MAX_RATE, \ | |
700 | NSIM_DEV_TRAP_POLICER_MIN_RATE, \ | |
701 | NSIM_DEV_TRAP_POLICER_MAX_BURST, \ | |
702 | NSIM_DEV_TRAP_POLICER_MIN_BURST) | |
703 | ||
704 | static const struct devlink_trap_policer nsim_trap_policers_arr[] = { | |
705 | NSIM_TRAP_POLICER(1, 1000, 128), | |
706 | NSIM_TRAP_POLICER(2, 2000, 256), | |
707 | NSIM_TRAP_POLICER(3, 3000, 512), | |
708 | }; | |
709 | ||
b29545d8 | 710 | static const struct devlink_trap_group nsim_trap_groups_arr[] = { |
f9f54392 IS |
711 | DEVLINK_TRAP_GROUP_GENERIC(L2_DROPS, 0), |
712 | DEVLINK_TRAP_GROUP_GENERIC(L3_DROPS, 1), | |
85176f19 | 713 | DEVLINK_TRAP_GROUP_GENERIC(L3_EXCEPTIONS, 1), |
f9f54392 IS |
714 | DEVLINK_TRAP_GROUP_GENERIC(BUFFER_DROPS, 2), |
715 | DEVLINK_TRAP_GROUP_GENERIC(ACL_DROPS, 3), | |
18979367 | 716 | DEVLINK_TRAP_GROUP_GENERIC(MC_SNOOPING, 3), |
b29545d8 IS |
717 | }; |
718 | ||
da58f90f IS |
719 | static const struct devlink_trap nsim_traps_arr[] = { |
720 | NSIM_TRAP_DROP(SMAC_MC, L2_DROPS), | |
721 | NSIM_TRAP_DROP(VLAN_TAG_MISMATCH, L2_DROPS), | |
722 | NSIM_TRAP_DROP(INGRESS_VLAN_FILTER, L2_DROPS), | |
723 | NSIM_TRAP_DROP(INGRESS_STP_FILTER, L2_DROPS), | |
724 | NSIM_TRAP_DROP(EMPTY_TX_LIST, L2_DROPS), | |
725 | NSIM_TRAP_DROP(PORT_LOOPBACK_FILTER, L2_DROPS), | |
726 | NSIM_TRAP_DRIVER_EXCEPTION(FID_MISS, L2_DROPS), | |
727 | NSIM_TRAP_DROP(BLACKHOLE_ROUTE, L3_DROPS), | |
85176f19 | 728 | NSIM_TRAP_EXCEPTION(TTL_ERROR, L3_EXCEPTIONS), |
da58f90f | 729 | NSIM_TRAP_DROP(TAIL_DROP, BUFFER_DROPS), |
d3cbb907 JP |
730 | NSIM_TRAP_DROP_EXT(INGRESS_FLOW_ACTION_DROP, ACL_DROPS, |
731 | DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE), | |
732 | NSIM_TRAP_DROP_EXT(EGRESS_FLOW_ACTION_DROP, ACL_DROPS, | |
733 | DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE), | |
18979367 IS |
734 | NSIM_TRAP_CONTROL(IGMP_QUERY, MC_SNOOPING, MIRROR), |
735 | NSIM_TRAP_CONTROL(IGMP_V1_REPORT, MC_SNOOPING, TRAP), | |
da58f90f IS |
736 | }; |
737 | ||
738 | #define NSIM_TRAP_L4_DATA_LEN 100 | |
739 | ||
740 | static struct sk_buff *nsim_dev_trap_skb_build(void) | |
741 | { | |
742 | int tot_len, data_len = NSIM_TRAP_L4_DATA_LEN; | |
743 | struct sk_buff *skb; | |
744 | struct udphdr *udph; | |
745 | struct ethhdr *eth; | |
746 | struct iphdr *iph; | |
747 | ||
748 | skb = alloc_skb(NLMSG_GOODSIZE, GFP_ATOMIC); | |
749 | if (!skb) | |
750 | return NULL; | |
751 | tot_len = sizeof(struct iphdr) + sizeof(struct udphdr) + data_len; | |
752 | ||
58a406de | 753 | skb_reset_mac_header(skb); |
da58f90f IS |
754 | eth = skb_put(skb, sizeof(struct ethhdr)); |
755 | eth_random_addr(eth->h_dest); | |
756 | eth_random_addr(eth->h_source); | |
757 | eth->h_proto = htons(ETH_P_IP); | |
758 | skb->protocol = htons(ETH_P_IP); | |
759 | ||
58a406de | 760 | skb_set_network_header(skb, skb->len); |
da58f90f IS |
761 | iph = skb_put(skb, sizeof(struct iphdr)); |
762 | iph->protocol = IPPROTO_UDP; | |
763 | iph->saddr = in_aton("192.0.2.1"); | |
764 | iph->daddr = in_aton("198.51.100.1"); | |
765 | iph->version = 0x4; | |
766 | iph->frag_off = 0; | |
767 | iph->ihl = 0x5; | |
768 | iph->tot_len = htons(tot_len); | |
769 | iph->ttl = 100; | |
d9bd6d27 Y |
770 | iph->check = 0; |
771 | iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); | |
da58f90f | 772 | |
58a406de | 773 | skb_set_transport_header(skb, skb->len); |
da58f90f IS |
774 | udph = skb_put_zero(skb, sizeof(struct udphdr) + data_len); |
775 | get_random_bytes(&udph->source, sizeof(u16)); | |
776 | get_random_bytes(&udph->dest, sizeof(u16)); | |
777 | udph->len = htons(sizeof(struct udphdr) + data_len); | |
778 | ||
779 | return skb; | |
780 | } | |
781 | ||
782 | static void nsim_dev_trap_report(struct nsim_dev_port *nsim_dev_port) | |
783 | { | |
784 | struct nsim_dev *nsim_dev = nsim_dev_port->ns->nsim_dev; | |
785 | struct devlink *devlink = priv_to_devlink(nsim_dev); | |
786 | struct nsim_trap_data *nsim_trap_data; | |
787 | int i; | |
788 | ||
789 | nsim_trap_data = nsim_dev->trap_data; | |
790 | ||
791 | spin_lock(&nsim_trap_data->trap_lock); | |
792 | for (i = 0; i < ARRAY_SIZE(nsim_traps_arr); i++) { | |
d3cbb907 | 793 | struct flow_action_cookie *fa_cookie = NULL; |
da58f90f IS |
794 | struct nsim_trap_item *nsim_trap_item; |
795 | struct sk_buff *skb; | |
d3cbb907 JP |
796 | bool has_fa_cookie; |
797 | ||
798 | has_fa_cookie = nsim_traps_arr[i].metadata_cap & | |
799 | DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE; | |
da58f90f IS |
800 | |
801 | nsim_trap_item = &nsim_trap_data->trap_items_arr[i]; | |
802 | if (nsim_trap_item->action == DEVLINK_TRAP_ACTION_DROP) | |
803 | continue; | |
804 | ||
805 | skb = nsim_dev_trap_skb_build(); | |
806 | if (!skb) | |
807 | continue; | |
808 | skb->dev = nsim_dev_port->ns->netdev; | |
809 | ||
810 | /* Trapped packets are usually passed to devlink in softIRQ, | |
811 | * but in this case they are generated in a workqueue. Disable | |
812 | * softIRQs to prevent lockdep from complaining about | |
813 | * "incosistent lock state". | |
814 | */ | |
d3cbb907 JP |
815 | |
816 | spin_lock_bh(&nsim_dev->fa_cookie_lock); | |
817 | fa_cookie = has_fa_cookie ? nsim_dev->fa_cookie : NULL; | |
da58f90f | 818 | devlink_trap_report(devlink, skb, nsim_trap_item->trap_ctx, |
d3cbb907 JP |
819 | &nsim_dev_port->devlink_port, fa_cookie); |
820 | spin_unlock_bh(&nsim_dev->fa_cookie_lock); | |
da58f90f IS |
821 | consume_skb(skb); |
822 | } | |
823 | spin_unlock(&nsim_trap_data->trap_lock); | |
824 | } | |
825 | ||
826 | #define NSIM_TRAP_REPORT_INTERVAL_MS 100 | |
827 | ||
828 | static void nsim_dev_trap_report_work(struct work_struct *work) | |
829 | { | |
830 | struct nsim_trap_data *nsim_trap_data; | |
831 | struct nsim_dev_port *nsim_dev_port; | |
832 | struct nsim_dev *nsim_dev; | |
833 | ||
834 | nsim_trap_data = container_of(work, struct nsim_trap_data, | |
835 | trap_report_dw.work); | |
836 | nsim_dev = nsim_trap_data->nsim_dev; | |
837 | ||
012ec02a | 838 | if (!devl_trylock(priv_to_devlink(nsim_dev))) { |
ba5e1272 | 839 | schedule_delayed_work(&nsim_dev->trap_data->trap_report_dw, 1); |
012ec02a JP |
840 | return; |
841 | } | |
842 | ||
ba5e1272 ED |
843 | /* For each running port and enabled packet trap, generate a UDP |
844 | * packet with a random 5-tuple and report it. | |
845 | */ | |
da58f90f IS |
846 | list_for_each_entry(nsim_dev_port, &nsim_dev->port_list, list) { |
847 | if (!netif_running(nsim_dev_port->ns->netdev)) | |
848 | continue; | |
849 | ||
850 | nsim_dev_trap_report(nsim_dev_port); | |
851 | } | |
76eea6c2 | 852 | devl_unlock(priv_to_devlink(nsim_dev)); |
da58f90f IS |
853 | |
854 | schedule_delayed_work(&nsim_dev->trap_data->trap_report_dw, | |
855 | msecs_to_jiffies(NSIM_TRAP_REPORT_INTERVAL_MS)); | |
856 | } | |
857 | ||
858 | static int nsim_dev_traps_init(struct devlink *devlink) | |
859 | { | |
ad188458 | 860 | size_t policers_count = ARRAY_SIZE(nsim_trap_policers_arr); |
da58f90f IS |
861 | struct nsim_dev *nsim_dev = devlink_priv(devlink); |
862 | struct nsim_trap_data *nsim_trap_data; | |
863 | int err; | |
864 | ||
865 | nsim_trap_data = kzalloc(sizeof(*nsim_trap_data), GFP_KERNEL); | |
866 | if (!nsim_trap_data) | |
867 | return -ENOMEM; | |
868 | ||
869 | nsim_trap_data->trap_items_arr = kcalloc(ARRAY_SIZE(nsim_traps_arr), | |
870 | sizeof(struct nsim_trap_item), | |
871 | GFP_KERNEL); | |
872 | if (!nsim_trap_data->trap_items_arr) { | |
873 | err = -ENOMEM; | |
874 | goto err_trap_data_free; | |
875 | } | |
876 | ||
ad188458 IS |
877 | nsim_trap_data->trap_policers_cnt_arr = kcalloc(policers_count, |
878 | sizeof(u64), | |
879 | GFP_KERNEL); | |
880 | if (!nsim_trap_data->trap_policers_cnt_arr) { | |
881 | err = -ENOMEM; | |
882 | goto err_trap_items_free; | |
883 | } | |
884 | ||
da58f90f IS |
885 | /* The lock is used to protect the action state of the registered |
886 | * traps. The value is written by user and read in delayed work when | |
887 | * iterating over all the traps. | |
888 | */ | |
889 | spin_lock_init(&nsim_trap_data->trap_lock); | |
890 | nsim_trap_data->nsim_dev = nsim_dev; | |
891 | nsim_dev->trap_data = nsim_trap_data; | |
892 | ||
012ec02a JP |
893 | err = devl_trap_policers_register(devlink, nsim_trap_policers_arr, |
894 | policers_count); | |
ad188458 IS |
895 | if (err) |
896 | goto err_trap_policers_cnt_free; | |
897 | ||
012ec02a JP |
898 | err = devl_trap_groups_register(devlink, nsim_trap_groups_arr, |
899 | ARRAY_SIZE(nsim_trap_groups_arr)); | |
b29545d8 | 900 | if (err) |
ad188458 | 901 | goto err_trap_policers_unregister; |
b29545d8 | 902 | |
012ec02a JP |
903 | err = devl_traps_register(devlink, nsim_traps_arr, |
904 | ARRAY_SIZE(nsim_traps_arr), NULL); | |
da58f90f | 905 | if (err) |
b29545d8 | 906 | goto err_trap_groups_unregister; |
da58f90f IS |
907 | |
908 | INIT_DELAYED_WORK(&nsim_dev->trap_data->trap_report_dw, | |
909 | nsim_dev_trap_report_work); | |
910 | schedule_delayed_work(&nsim_dev->trap_data->trap_report_dw, | |
911 | msecs_to_jiffies(NSIM_TRAP_REPORT_INTERVAL_MS)); | |
912 | ||
913 | return 0; | |
914 | ||
b29545d8 | 915 | err_trap_groups_unregister: |
012ec02a JP |
916 | devl_trap_groups_unregister(devlink, nsim_trap_groups_arr, |
917 | ARRAY_SIZE(nsim_trap_groups_arr)); | |
ad188458 | 918 | err_trap_policers_unregister: |
012ec02a JP |
919 | devl_trap_policers_unregister(devlink, nsim_trap_policers_arr, |
920 | ARRAY_SIZE(nsim_trap_policers_arr)); | |
ad188458 IS |
921 | err_trap_policers_cnt_free: |
922 | kfree(nsim_trap_data->trap_policers_cnt_arr); | |
da58f90f IS |
923 | err_trap_items_free: |
924 | kfree(nsim_trap_data->trap_items_arr); | |
925 | err_trap_data_free: | |
926 | kfree(nsim_trap_data); | |
927 | return err; | |
928 | } | |
929 | ||
930 | static void nsim_dev_traps_exit(struct devlink *devlink) | |
931 | { | |
932 | struct nsim_dev *nsim_dev = devlink_priv(devlink); | |
933 | ||
76eea6c2 | 934 | /* caution, trap work takes devlink lock */ |
da58f90f | 935 | cancel_delayed_work_sync(&nsim_dev->trap_data->trap_report_dw); |
012ec02a JP |
936 | devl_traps_unregister(devlink, nsim_traps_arr, |
937 | ARRAY_SIZE(nsim_traps_arr)); | |
938 | devl_trap_groups_unregister(devlink, nsim_trap_groups_arr, | |
939 | ARRAY_SIZE(nsim_trap_groups_arr)); | |
940 | devl_trap_policers_unregister(devlink, nsim_trap_policers_arr, | |
941 | ARRAY_SIZE(nsim_trap_policers_arr)); | |
ad188458 | 942 | kfree(nsim_dev->trap_data->trap_policers_cnt_arr); |
da58f90f IS |
943 | kfree(nsim_dev->trap_data->trap_items_arr); |
944 | kfree(nsim_dev->trap_data); | |
945 | } | |
946 | ||
75ba029f JP |
947 | static int nsim_dev_reload_create(struct nsim_dev *nsim_dev, |
948 | struct netlink_ext_ack *extack); | |
949 | static void nsim_dev_reload_destroy(struct nsim_dev *nsim_dev); | |
950 | ||
070c63f2 | 951 | static int nsim_dev_reload_down(struct devlink *devlink, bool netns_change, |
dc64cc7c MS |
952 | enum devlink_reload_action action, enum devlink_reload_limit limit, |
953 | struct netlink_ext_ack *extack) | |
97691069 | 954 | { |
75ba029f JP |
955 | struct nsim_dev *nsim_dev = devlink_priv(devlink); |
956 | ||
155ddfc5 JP |
957 | if (nsim_dev->dont_allow_reload) { |
958 | /* For testing purposes, user set debugfs dont_allow_reload | |
959 | * value to true. So forbid it. | |
960 | */ | |
f9867b51 | 961 | NL_SET_ERR_MSG_MOD(extack, "User forbid the reload for testing purposes"); |
155ddfc5 JP |
962 | return -EOPNOTSUPP; |
963 | } | |
964 | ||
75ba029f | 965 | nsim_dev_reload_destroy(nsim_dev); |
97691069 JP |
966 | return 0; |
967 | } | |
968 | ||
ccdf0721 | 969 | static int nsim_dev_reload_up(struct devlink *devlink, enum devlink_reload_action action, |
dc64cc7c MS |
970 | enum devlink_reload_limit limit, u32 *actions_performed, |
971 | struct netlink_ext_ack *extack) | |
37923ed6 | 972 | { |
a5facc4c | 973 | struct nsim_dev *nsim_dev = devlink_priv(devlink); |
5c0418ed | 974 | |
155ddfc5 JP |
975 | if (nsim_dev->fail_reload) { |
976 | /* For testing purposes, user set debugfs fail_reload | |
977 | * value to true. Fail right away. | |
978 | */ | |
979 | NL_SET_ERR_MSG_MOD(extack, "User setup the reload to fail for testing purposes"); | |
980 | return -EINVAL; | |
981 | } | |
982 | ||
ccdf0721 | 983 | *actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT); |
5603072e JC |
984 | |
985 | return nsim_dev_reload_create(nsim_dev, extack); | |
37923ed6 DA |
986 | } |
987 | ||
8e23cc03 JP |
988 | static int nsim_dev_info_get(struct devlink *devlink, |
989 | struct devlink_info_req *req, | |
990 | struct netlink_ext_ack *extack) | |
991 | { | |
0c198975 JP |
992 | int err; |
993 | ||
0c198975 JP |
994 | err = devlink_info_version_stored_put_ext(req, "fw.mgmt", "10.20.30", |
995 | DEVLINK_INFO_VERSION_TYPE_COMPONENT); | |
996 | if (err) | |
997 | return err; | |
998 | return devlink_info_version_running_put_ext(req, "fw.mgmt", "10.20.30", | |
999 | DEVLINK_INFO_VERSION_TYPE_COMPONENT); | |
8e23cc03 JP |
1000 | } |
1001 | ||
fa4dfc4a JP |
1002 | #define NSIM_DEV_FLASH_SIZE 500000 |
1003 | #define NSIM_DEV_FLASH_CHUNK_SIZE 1000 | |
1004 | #define NSIM_DEV_FLASH_CHUNK_TIME_MS 10 | |
1005 | ||
bc75c054 JK |
1006 | static int nsim_dev_flash_update(struct devlink *devlink, |
1007 | struct devlink_flash_update_params *params, | |
fa4dfc4a JP |
1008 | struct netlink_ext_ack *extack) |
1009 | { | |
1010 | struct nsim_dev *nsim_dev = devlink_priv(devlink); | |
1011 | int i; | |
1012 | ||
cbb58368 JK |
1013 | if ((params->overwrite_mask & ~nsim_dev->fw_update_overwrite_mask) != 0) |
1014 | return -EOPNOTSUPP; | |
1015 | ||
fa4dfc4a | 1016 | if (nsim_dev->fw_update_status) { |
fa4dfc4a JP |
1017 | devlink_flash_update_status_notify(devlink, |
1018 | "Preparing to flash", | |
bc75c054 | 1019 | params->component, 0, 0); |
fa4dfc4a JP |
1020 | } |
1021 | ||
1022 | for (i = 0; i < NSIM_DEV_FLASH_SIZE / NSIM_DEV_FLASH_CHUNK_SIZE; i++) { | |
1023 | if (nsim_dev->fw_update_status) | |
1024 | devlink_flash_update_status_notify(devlink, "Flashing", | |
bc75c054 | 1025 | params->component, |
fa4dfc4a JP |
1026 | i * NSIM_DEV_FLASH_CHUNK_SIZE, |
1027 | NSIM_DEV_FLASH_SIZE); | |
1028 | msleep(NSIM_DEV_FLASH_CHUNK_TIME_MS); | |
1029 | } | |
1030 | ||
1031 | if (nsim_dev->fw_update_status) { | |
1032 | devlink_flash_update_status_notify(devlink, "Flashing", | |
bc75c054 | 1033 | params->component, |
fa4dfc4a JP |
1034 | NSIM_DEV_FLASH_SIZE, |
1035 | NSIM_DEV_FLASH_SIZE); | |
b311b001 | 1036 | devlink_flash_update_timeout_notify(devlink, "Flash select", |
bc75c054 | 1037 | params->component, 81); |
fa4dfc4a | 1038 | devlink_flash_update_status_notify(devlink, "Flashing done", |
bc75c054 | 1039 | params->component, 0, 0); |
fa4dfc4a JP |
1040 | } |
1041 | ||
1042 | return 0; | |
1043 | } | |
1044 | ||
da58f90f IS |
1045 | static struct nsim_trap_item * |
1046 | nsim_dev_trap_item_lookup(struct nsim_dev *nsim_dev, u16 trap_id) | |
1047 | { | |
1048 | struct nsim_trap_data *nsim_trap_data = nsim_dev->trap_data; | |
1049 | int i; | |
1050 | ||
1051 | for (i = 0; i < ARRAY_SIZE(nsim_traps_arr); i++) { | |
1052 | if (nsim_traps_arr[i].id == trap_id) | |
1053 | return &nsim_trap_data->trap_items_arr[i]; | |
1054 | } | |
1055 | ||
1056 | return NULL; | |
1057 | } | |
1058 | ||
1059 | static int nsim_dev_devlink_trap_init(struct devlink *devlink, | |
1060 | const struct devlink_trap *trap, | |
1061 | void *trap_ctx) | |
1062 | { | |
1063 | struct nsim_dev *nsim_dev = devlink_priv(devlink); | |
1064 | struct nsim_trap_item *nsim_trap_item; | |
1065 | ||
1066 | nsim_trap_item = nsim_dev_trap_item_lookup(nsim_dev, trap->id); | |
1067 | if (WARN_ON(!nsim_trap_item)) | |
1068 | return -ENOENT; | |
1069 | ||
1070 | nsim_trap_item->trap_ctx = trap_ctx; | |
1071 | nsim_trap_item->action = trap->init_action; | |
1072 | ||
1073 | return 0; | |
1074 | } | |
1075 | ||
1076 | static int | |
1077 | nsim_dev_devlink_trap_action_set(struct devlink *devlink, | |
1078 | const struct devlink_trap *trap, | |
c88e11e0 IS |
1079 | enum devlink_trap_action action, |
1080 | struct netlink_ext_ack *extack) | |
da58f90f IS |
1081 | { |
1082 | struct nsim_dev *nsim_dev = devlink_priv(devlink); | |
1083 | struct nsim_trap_item *nsim_trap_item; | |
1084 | ||
1085 | nsim_trap_item = nsim_dev_trap_item_lookup(nsim_dev, trap->id); | |
1086 | if (WARN_ON(!nsim_trap_item)) | |
1087 | return -ENOENT; | |
1088 | ||
1089 | spin_lock(&nsim_dev->trap_data->trap_lock); | |
1090 | nsim_trap_item->action = action; | |
1091 | spin_unlock(&nsim_dev->trap_data->trap_lock); | |
1092 | ||
1093 | return 0; | |
1094 | } | |
1095 | ||
0dc8249a IS |
1096 | static int |
1097 | nsim_dev_devlink_trap_group_set(struct devlink *devlink, | |
1098 | const struct devlink_trap_group *group, | |
c88e11e0 IS |
1099 | const struct devlink_trap_policer *policer, |
1100 | struct netlink_ext_ack *extack) | |
0dc8249a IS |
1101 | { |
1102 | struct nsim_dev *nsim_dev = devlink_priv(devlink); | |
1103 | ||
1104 | if (nsim_dev->fail_trap_group_set) | |
1105 | return -EINVAL; | |
1106 | ||
1107 | return 0; | |
1108 | } | |
1109 | ||
ad188458 IS |
1110 | static int |
1111 | nsim_dev_devlink_trap_policer_set(struct devlink *devlink, | |
1112 | const struct devlink_trap_policer *policer, | |
1113 | u64 rate, u64 burst, | |
1114 | struct netlink_ext_ack *extack) | |
1115 | { | |
1116 | struct nsim_dev *nsim_dev = devlink_priv(devlink); | |
1117 | ||
1118 | if (nsim_dev->fail_trap_policer_set) { | |
1119 | NL_SET_ERR_MSG_MOD(extack, "User setup the operation to fail for testing purposes"); | |
1120 | return -EINVAL; | |
1121 | } | |
1122 | ||
1123 | return 0; | |
1124 | } | |
1125 | ||
1126 | static int | |
1127 | nsim_dev_devlink_trap_policer_counter_get(struct devlink *devlink, | |
1128 | const struct devlink_trap_policer *policer, | |
1129 | u64 *p_drops) | |
1130 | { | |
1131 | struct nsim_dev *nsim_dev = devlink_priv(devlink); | |
1132 | u64 *cnt; | |
1133 | ||
1134 | if (nsim_dev->fail_trap_policer_counter_get) | |
1135 | return -EINVAL; | |
1136 | ||
1137 | cnt = &nsim_dev->trap_data->trap_policers_cnt_arr[policer->id - 1]; | |
be43224f | 1138 | *p_drops = (*cnt)++; |
ad188458 IS |
1139 | |
1140 | return 0; | |
1141 | } | |
1142 | ||
605c4f8f DL |
1143 | #define NSIM_LINK_SPEED_MAX 5000 /* Mbps */ |
1144 | #define NSIM_LINK_SPEED_UNIT 125000 /* 1 Mbps given in bytes/sec to avoid | |
1145 | * u64 overflow during conversion from | |
1146 | * bytes to bits. | |
1147 | */ | |
1148 | ||
1149 | static int nsim_rate_bytes_to_units(char *name, u64 *rate, struct netlink_ext_ack *extack) | |
1150 | { | |
1151 | u64 val; | |
1152 | u32 rem; | |
1153 | ||
1154 | val = div_u64_rem(*rate, NSIM_LINK_SPEED_UNIT, &rem); | |
1155 | if (rem) { | |
1156 | pr_err("%s rate value %lluBps not in link speed units of 1Mbps.\n", | |
1157 | name, *rate); | |
1158 | NL_SET_ERR_MSG_MOD(extack, "TX rate value not in link speed units of 1Mbps."); | |
1159 | return -EINVAL; | |
1160 | } | |
1161 | ||
1162 | if (val > NSIM_LINK_SPEED_MAX) { | |
1163 | pr_err("%s rate value %lluMbps exceed link maximum speed 5000Mbps.\n", | |
1164 | name, val); | |
1165 | NL_SET_ERR_MSG_MOD(extack, "TX rate value exceed link maximum speed 5000Mbps."); | |
1166 | return -EINVAL; | |
1167 | } | |
1168 | *rate = val; | |
1169 | return 0; | |
1170 | } | |
1171 | ||
1172 | static int nsim_leaf_tx_share_set(struct devlink_rate *devlink_rate, void *priv, | |
1173 | u64 tx_share, struct netlink_ext_ack *extack) | |
1174 | { | |
1175 | struct nsim_dev_port *nsim_dev_port = priv; | |
5e388f3d | 1176 | struct nsim_dev *nsim_dev = nsim_dev_port->ns->nsim_dev; |
605c4f8f DL |
1177 | int vf_id = nsim_dev_port_index_to_vf_index(nsim_dev_port->port_index); |
1178 | int err; | |
1179 | ||
1180 | err = nsim_rate_bytes_to_units("tx_share", &tx_share, extack); | |
1181 | if (err) | |
1182 | return err; | |
1183 | ||
5e388f3d | 1184 | nsim_dev->vfconfigs[vf_id].min_tx_rate = tx_share; |
605c4f8f DL |
1185 | return 0; |
1186 | } | |
1187 | ||
1188 | static int nsim_leaf_tx_max_set(struct devlink_rate *devlink_rate, void *priv, | |
1189 | u64 tx_max, struct netlink_ext_ack *extack) | |
1190 | { | |
1191 | struct nsim_dev_port *nsim_dev_port = priv; | |
5e388f3d | 1192 | struct nsim_dev *nsim_dev = nsim_dev_port->ns->nsim_dev; |
605c4f8f DL |
1193 | int vf_id = nsim_dev_port_index_to_vf_index(nsim_dev_port->port_index); |
1194 | int err; | |
1195 | ||
1196 | err = nsim_rate_bytes_to_units("tx_max", &tx_max, extack); | |
1197 | if (err) | |
1198 | return err; | |
1199 | ||
5e388f3d | 1200 | nsim_dev->vfconfigs[vf_id].max_tx_rate = tx_max; |
605c4f8f DL |
1201 | return 0; |
1202 | } | |
1203 | ||
885226f5 DL |
1204 | struct nsim_rate_node { |
1205 | struct dentry *ddir; | |
f3d101b4 DL |
1206 | struct dentry *rate_parent; |
1207 | char *parent_name; | |
885226f5 DL |
1208 | u16 tx_share; |
1209 | u16 tx_max; | |
1210 | }; | |
1211 | ||
1212 | static int nsim_node_tx_share_set(struct devlink_rate *devlink_rate, void *priv, | |
1213 | u64 tx_share, struct netlink_ext_ack *extack) | |
1214 | { | |
1215 | struct nsim_rate_node *nsim_node = priv; | |
1216 | int err; | |
1217 | ||
1218 | err = nsim_rate_bytes_to_units("tx_share", &tx_share, extack); | |
1219 | if (err) | |
1220 | return err; | |
1221 | ||
1222 | nsim_node->tx_share = tx_share; | |
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | static int nsim_node_tx_max_set(struct devlink_rate *devlink_rate, void *priv, | |
1227 | u64 tx_max, struct netlink_ext_ack *extack) | |
1228 | { | |
1229 | struct nsim_rate_node *nsim_node = priv; | |
1230 | int err; | |
1231 | ||
1232 | err = nsim_rate_bytes_to_units("tx_max", &tx_max, extack); | |
1233 | if (err) | |
1234 | return err; | |
1235 | ||
1236 | nsim_node->tx_max = tx_max; | |
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | static int nsim_rate_node_new(struct devlink_rate *node, void **priv, | |
1241 | struct netlink_ext_ack *extack) | |
1242 | { | |
1243 | struct nsim_dev *nsim_dev = devlink_priv(node->devlink); | |
1244 | struct nsim_rate_node *nsim_node; | |
1245 | ||
1246 | if (!nsim_esw_mode_is_switchdev(nsim_dev)) { | |
1247 | NL_SET_ERR_MSG_MOD(extack, "Node creation allowed only in switchdev mode."); | |
1248 | return -EOPNOTSUPP; | |
1249 | } | |
1250 | ||
1251 | nsim_node = kzalloc(sizeof(*nsim_node), GFP_KERNEL); | |
1252 | if (!nsim_node) | |
1253 | return -ENOMEM; | |
1254 | ||
1255 | nsim_node->ddir = debugfs_create_dir(node->name, nsim_dev->nodes_ddir); | |
4e744cb8 | 1256 | |
885226f5 DL |
1257 | debugfs_create_u16("tx_share", 0400, nsim_node->ddir, &nsim_node->tx_share); |
1258 | debugfs_create_u16("tx_max", 0400, nsim_node->ddir, &nsim_node->tx_max); | |
f3d101b4 DL |
1259 | nsim_node->rate_parent = debugfs_create_file("rate_parent", 0400, |
1260 | nsim_node->ddir, | |
1261 | &nsim_node->parent_name, | |
1262 | &nsim_dev_rate_parent_fops); | |
f3d101b4 | 1263 | |
885226f5 DL |
1264 | *priv = nsim_node; |
1265 | return 0; | |
1266 | } | |
1267 | ||
1268 | static int nsim_rate_node_del(struct devlink_rate *node, void *priv, | |
1269 | struct netlink_ext_ack *extack) | |
1270 | { | |
1271 | struct nsim_rate_node *nsim_node = priv; | |
1272 | ||
f3d101b4 | 1273 | debugfs_remove(nsim_node->rate_parent); |
885226f5 DL |
1274 | debugfs_remove_recursive(nsim_node->ddir); |
1275 | kfree(nsim_node); | |
1276 | return 0; | |
1277 | } | |
1278 | ||
f3d101b4 DL |
1279 | static int nsim_rate_leaf_parent_set(struct devlink_rate *child, |
1280 | struct devlink_rate *parent, | |
1281 | void *priv_child, void *priv_parent, | |
1282 | struct netlink_ext_ack *extack) | |
1283 | { | |
1284 | struct nsim_dev_port *nsim_dev_port = priv_child; | |
1285 | ||
1286 | if (parent) | |
1287 | nsim_dev_port->parent_name = parent->name; | |
1288 | else | |
1289 | nsim_dev_port->parent_name = NULL; | |
1290 | return 0; | |
1291 | } | |
1292 | ||
1293 | static int nsim_rate_node_parent_set(struct devlink_rate *child, | |
1294 | struct devlink_rate *parent, | |
1295 | void *priv_child, void *priv_parent, | |
1296 | struct netlink_ext_ack *extack) | |
1297 | { | |
1298 | struct nsim_rate_node *nsim_node = priv_child; | |
1299 | ||
1300 | if (parent) | |
1301 | nsim_node->parent_name = parent->name; | |
1302 | else | |
1303 | nsim_node->parent_name = NULL; | |
1304 | return 0; | |
1305 | } | |
1306 | ||
a7b3527a | 1307 | static int |
275b51c2 OM |
1308 | nsim_dev_devlink_trap_drop_counter_get(struct devlink *devlink, |
1309 | const struct devlink_trap *trap, | |
1310 | u64 *p_drops) | |
a7b3527a OM |
1311 | { |
1312 | struct nsim_dev *nsim_dev = devlink_priv(devlink); | |
1313 | u64 *cnt; | |
1314 | ||
275b51c2 | 1315 | if (nsim_dev->fail_trap_drop_counter_get) |
a7b3527a OM |
1316 | return -EINVAL; |
1317 | ||
1318 | cnt = &nsim_dev->trap_data->trap_pkt_cnt; | |
1319 | *p_drops = (*cnt)++; | |
1320 | ||
1321 | return 0; | |
1322 | } | |
1323 | ||
8fb4bc6f | 1324 | static const struct devlink_ops nsim_dev_devlink_ops = { |
160dc373 DL |
1325 | .eswitch_mode_set = nsim_devlink_eswitch_mode_set, |
1326 | .eswitch_mode_get = nsim_devlink_eswitch_mode_get, | |
f94b6063 | 1327 | .supported_flash_update_params = DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK, |
ccdf0721 | 1328 | .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT), |
97691069 JP |
1329 | .reload_down = nsim_dev_reload_down, |
1330 | .reload_up = nsim_dev_reload_up, | |
8e23cc03 | 1331 | .info_get = nsim_dev_info_get, |
fa4dfc4a | 1332 | .flash_update = nsim_dev_flash_update, |
da58f90f IS |
1333 | .trap_init = nsim_dev_devlink_trap_init, |
1334 | .trap_action_set = nsim_dev_devlink_trap_action_set, | |
0dc8249a | 1335 | .trap_group_set = nsim_dev_devlink_trap_group_set, |
ad188458 IS |
1336 | .trap_policer_set = nsim_dev_devlink_trap_policer_set, |
1337 | .trap_policer_counter_get = nsim_dev_devlink_trap_policer_counter_get, | |
605c4f8f DL |
1338 | .rate_leaf_tx_share_set = nsim_leaf_tx_share_set, |
1339 | .rate_leaf_tx_max_set = nsim_leaf_tx_max_set, | |
885226f5 DL |
1340 | .rate_node_tx_share_set = nsim_node_tx_share_set, |
1341 | .rate_node_tx_max_set = nsim_node_tx_max_set, | |
1342 | .rate_node_new = nsim_rate_node_new, | |
1343 | .rate_node_del = nsim_rate_node_del, | |
f3d101b4 DL |
1344 | .rate_leaf_parent_set = nsim_rate_leaf_parent_set, |
1345 | .rate_node_parent_set = nsim_rate_node_parent_set, | |
275b51c2 | 1346 | .trap_drop_counter_get = nsim_dev_devlink_trap_drop_counter_get, |
37923ed6 DA |
1347 | }; |
1348 | ||
150e8f8a JP |
1349 | #define NSIM_DEV_MAX_MACS_DEFAULT 32 |
1350 | #define NSIM_DEV_TEST1_DEFAULT true | |
1351 | ||
814b9ce6 | 1352 | static int __nsim_dev_port_add(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type, |
7f36a77a JP |
1353 | unsigned int port_index) |
1354 | { | |
71ad8d55 | 1355 | struct devlink_port_attrs attrs = {}; |
7f36a77a JP |
1356 | struct nsim_dev_port *nsim_dev_port; |
1357 | struct devlink_port *devlink_port; | |
1358 | int err; | |
1359 | ||
5e388f3d | 1360 | if (type == NSIM_DEV_PORT_TYPE_VF && !nsim_dev_get_vfs(nsim_dev)) |
92ba1f29 DL |
1361 | return -EINVAL; |
1362 | ||
7f36a77a JP |
1363 | nsim_dev_port = kzalloc(sizeof(*nsim_dev_port), GFP_KERNEL); |
1364 | if (!nsim_dev_port) | |
1365 | return -ENOMEM; | |
814b9ce6 DL |
1366 | nsim_dev_port->port_index = nsim_dev_port_index(type, port_index); |
1367 | nsim_dev_port->port_type = type; | |
7f36a77a JP |
1368 | |
1369 | devlink_port = &nsim_dev_port->devlink_port; | |
92ba1f29 DL |
1370 | if (nsim_dev_port_is_pf(nsim_dev_port)) { |
1371 | attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL; | |
1372 | attrs.phys.port_number = port_index + 1; | |
1373 | } else { | |
1374 | attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_VF; | |
1375 | attrs.pci_vf.pf = 0; | |
1376 | attrs.pci_vf.vf = port_index; | |
1377 | } | |
71ad8d55 DR |
1378 | memcpy(attrs.switch_id.id, nsim_dev->switch_id.id, nsim_dev->switch_id.id_len); |
1379 | attrs.switch_id.id_len = nsim_dev->switch_id.id_len; | |
1380 | devlink_port_attrs_set(devlink_port, &attrs); | |
76eea6c2 JK |
1381 | err = devl_port_register(priv_to_devlink(nsim_dev), devlink_port, |
1382 | nsim_dev_port->port_index); | |
7f36a77a JP |
1383 | if (err) |
1384 | goto err_port_free; | |
1385 | ||
1386 | err = nsim_dev_port_debugfs_init(nsim_dev, nsim_dev_port); | |
1387 | if (err) | |
1388 | goto err_dl_port_unregister; | |
1389 | ||
1390 | nsim_dev_port->ns = nsim_create(nsim_dev, nsim_dev_port); | |
1391 | if (IS_ERR(nsim_dev_port->ns)) { | |
1392 | err = PTR_ERR(nsim_dev_port->ns); | |
1393 | goto err_port_debugfs_exit; | |
1394 | } | |
1395 | ||
885dfe12 | 1396 | if (nsim_dev_port_is_vf(nsim_dev_port)) { |
76eea6c2 | 1397 | err = devl_rate_leaf_create(&nsim_dev_port->devlink_port, |
f2fc15e2 | 1398 | nsim_dev_port, NULL); |
885dfe12 DL |
1399 | if (err) |
1400 | goto err_nsim_destroy; | |
1401 | } | |
1402 | ||
7f36a77a JP |
1403 | list_add(&nsim_dev_port->list, &nsim_dev->port_list); |
1404 | ||
1405 | return 0; | |
1406 | ||
885dfe12 DL |
1407 | err_nsim_destroy: |
1408 | nsim_destroy(nsim_dev_port->ns); | |
7f36a77a JP |
1409 | err_port_debugfs_exit: |
1410 | nsim_dev_port_debugfs_exit(nsim_dev_port); | |
1411 | err_dl_port_unregister: | |
76eea6c2 | 1412 | devl_port_unregister(devlink_port); |
7f36a77a JP |
1413 | err_port_free: |
1414 | kfree(nsim_dev_port); | |
1415 | return err; | |
1416 | } | |
1417 | ||
1418 | static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port) | |
1419 | { | |
1420 | struct devlink_port *devlink_port = &nsim_dev_port->devlink_port; | |
1421 | ||
1422 | list_del(&nsim_dev_port->list); | |
885dfe12 | 1423 | if (nsim_dev_port_is_vf(nsim_dev_port)) |
76eea6c2 | 1424 | devl_rate_leaf_destroy(&nsim_dev_port->devlink_port); |
7f36a77a JP |
1425 | nsim_destroy(nsim_dev_port->ns); |
1426 | nsim_dev_port_debugfs_exit(nsim_dev_port); | |
76eea6c2 | 1427 | devl_port_unregister(devlink_port); |
7f36a77a JP |
1428 | kfree(nsim_dev_port); |
1429 | } | |
1430 | ||
1431 | static void nsim_dev_port_del_all(struct nsim_dev *nsim_dev) | |
1432 | { | |
1433 | struct nsim_dev_port *nsim_dev_port, *tmp; | |
1434 | ||
1435 | list_for_each_entry_safe(nsim_dev_port, tmp, | |
1436 | &nsim_dev->port_list, list) | |
1437 | __nsim_dev_port_del(nsim_dev_port); | |
1438 | } | |
1439 | ||
1440 | static int nsim_dev_port_add_all(struct nsim_dev *nsim_dev, | |
1441 | unsigned int port_count) | |
1442 | { | |
1443 | int i, err; | |
1444 | ||
1445 | for (i = 0; i < port_count; i++) { | |
814b9ce6 | 1446 | err = __nsim_dev_port_add(nsim_dev, NSIM_DEV_PORT_TYPE_PF, i); |
7f36a77a JP |
1447 | if (err) |
1448 | goto err_port_del_all; | |
1449 | } | |
1450 | return 0; | |
1451 | ||
1452 | err_port_del_all: | |
1453 | nsim_dev_port_del_all(nsim_dev); | |
1454 | return err; | |
1455 | } | |
1456 | ||
75ba029f JP |
1457 | static int nsim_dev_reload_create(struct nsim_dev *nsim_dev, |
1458 | struct netlink_ext_ack *extack) | |
1459 | { | |
1460 | struct nsim_bus_dev *nsim_bus_dev = nsim_dev->nsim_bus_dev; | |
1461 | struct devlink *devlink; | |
1462 | int err; | |
1463 | ||
1464 | devlink = priv_to_devlink(nsim_dev); | |
1465 | nsim_dev = devlink_priv(devlink); | |
1466 | INIT_LIST_HEAD(&nsim_dev->port_list); | |
75ba029f | 1467 | nsim_dev->fw_update_status = true; |
cbb58368 | 1468 | nsim_dev->fw_update_overwrite_mask = 0; |
75ba029f | 1469 | |
75ba029f JP |
1470 | nsim_devlink_param_load_driverinit_values(devlink); |
1471 | ||
1472 | err = nsim_dev_dummy_region_init(nsim_dev, devlink); | |
1473 | if (err) | |
f57ab5b7 | 1474 | return err; |
75ba029f JP |
1475 | |
1476 | err = nsim_dev_traps_init(devlink); | |
1477 | if (err) | |
1478 | goto err_dummy_region_exit; | |
1479 | ||
f57ab5b7 IS |
1480 | nsim_dev->fib_data = nsim_fib_create(devlink, extack); |
1481 | if (IS_ERR(nsim_dev->fib_data)) { | |
1482 | err = PTR_ERR(nsim_dev->fib_data); | |
1483 | goto err_traps_exit; | |
1484 | } | |
1485 | ||
82c93a87 | 1486 | err = nsim_dev_health_init(nsim_dev, devlink); |
75ba029f | 1487 | if (err) |
f57ab5b7 | 1488 | goto err_fib_destroy; |
75ba029f | 1489 | |
a8700c3d | 1490 | err = nsim_dev_psample_init(nsim_dev); |
82c93a87 JP |
1491 | if (err) |
1492 | goto err_health_exit; | |
1493 | ||
1a6d7ae7 | 1494 | err = nsim_dev_hwstats_init(nsim_dev); |
a8700c3d IS |
1495 | if (err) |
1496 | goto err_psample_exit; | |
1497 | ||
1a6d7ae7 PM |
1498 | err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count); |
1499 | if (err) | |
1500 | goto err_hwstats_exit; | |
1501 | ||
8526ad96 TY |
1502 | nsim_dev->take_snapshot = debugfs_create_file("take_snapshot", |
1503 | 0200, | |
1504 | nsim_dev->ddir, | |
1505 | nsim_dev, | |
1506 | &nsim_dev_take_snapshot_fops); | |
75ba029f JP |
1507 | return 0; |
1508 | ||
1a6d7ae7 PM |
1509 | err_hwstats_exit: |
1510 | nsim_dev_hwstats_exit(nsim_dev); | |
a8700c3d IS |
1511 | err_psample_exit: |
1512 | nsim_dev_psample_exit(nsim_dev); | |
82c93a87 JP |
1513 | err_health_exit: |
1514 | nsim_dev_health_exit(nsim_dev); | |
f57ab5b7 IS |
1515 | err_fib_destroy: |
1516 | nsim_fib_destroy(devlink, nsim_dev->fib_data); | |
75ba029f JP |
1517 | err_traps_exit: |
1518 | nsim_dev_traps_exit(devlink); | |
1519 | err_dummy_region_exit: | |
1520 | nsim_dev_dummy_region_exit(nsim_dev); | |
75ba029f JP |
1521 | return err; |
1522 | } | |
1523 | ||
a66f64b8 | 1524 | int nsim_drv_probe(struct nsim_bus_dev *nsim_bus_dev) |
37923ed6 | 1525 | { |
8fb4bc6f | 1526 | struct nsim_dev *nsim_dev; |
37923ed6 | 1527 | struct devlink *devlink; |
ef817102 | 1528 | int err; |
37923ed6 | 1529 | |
26713455 | 1530 | devlink = devlink_alloc_ns(&nsim_dev_devlink_ops, sizeof(*nsim_dev), |
919d13a7 | 1531 | nsim_bus_dev->initial_net, &nsim_bus_dev->dev); |
37923ed6 | 1532 | if (!devlink) |
bfcccfe7 | 1533 | return -ENOMEM; |
012ec02a | 1534 | devl_lock(devlink); |
8fb4bc6f | 1535 | nsim_dev = devlink_priv(devlink); |
d514f41e | 1536 | nsim_dev->nsim_bus_dev = nsim_bus_dev; |
514cf64c JP |
1537 | nsim_dev->switch_id.id_len = sizeof(nsim_dev->switch_id.id); |
1538 | get_random_bytes(nsim_dev->switch_id.id, nsim_dev->switch_id.id_len); | |
8320d145 | 1539 | INIT_LIST_HEAD(&nsim_dev->port_list); |
fa4dfc4a | 1540 | nsim_dev->fw_update_status = true; |
cbb58368 | 1541 | nsim_dev->fw_update_overwrite_mask = 0; |
150e8f8a JP |
1542 | nsim_dev->max_macs = NSIM_DEV_MAX_MACS_DEFAULT; |
1543 | nsim_dev->test1 = NSIM_DEV_TEST1_DEFAULT; | |
d3cbb907 | 1544 | spin_lock_init(&nsim_dev->fa_cookie_lock); |
37923ed6 | 1545 | |
bfcccfe7 JK |
1546 | dev_set_drvdata(&nsim_bus_dev->dev, nsim_dev); |
1547 | ||
5e388f3d JK |
1548 | nsim_dev->vfconfigs = kcalloc(nsim_bus_dev->max_vfs, |
1549 | sizeof(struct nsim_vf_config), | |
1550 | GFP_KERNEL | __GFP_NOWARN); | |
1551 | if (!nsim_dev->vfconfigs) { | |
1552 | err = -ENOMEM; | |
012ec02a | 1553 | goto err_devlink_unlock; |
5e388f3d JK |
1554 | } |
1555 | ||
82a3aef2 | 1556 | err = devl_register(devlink); |
37923ed6 | 1557 | if (err) |
5e388f3d | 1558 | goto err_vfc_free; |
37923ed6 | 1559 | |
82a3aef2 JK |
1560 | err = nsim_dev_resources_register(devlink); |
1561 | if (err) | |
1562 | goto err_dl_unregister; | |
1563 | ||
075935f0 JP |
1564 | err = devl_params_register(devlink, nsim_devlink_params, |
1565 | ARRAY_SIZE(nsim_devlink_params)); | |
d514f41e | 1566 | if (err) |
5c5ea1d0 | 1567 | goto err_resource_unregister; |
150e8f8a JP |
1568 | nsim_devlink_set_params_init_values(nsim_dev, devlink); |
1569 | ||
4418f862 | 1570 | err = nsim_dev_dummy_region_init(nsim_dev, devlink); |
150e8f8a JP |
1571 | if (err) |
1572 | goto err_params_unregister; | |
d514f41e | 1573 | |
da58f90f | 1574 | err = nsim_dev_traps_init(devlink); |
4418f862 JP |
1575 | if (err) |
1576 | goto err_dummy_region_exit; | |
1577 | ||
da58f90f IS |
1578 | err = nsim_dev_debugfs_init(nsim_dev); |
1579 | if (err) | |
1580 | goto err_traps_exit; | |
1581 | ||
f57ab5b7 IS |
1582 | nsim_dev->fib_data = nsim_fib_create(devlink, NULL); |
1583 | if (IS_ERR(nsim_dev->fib_data)) { | |
1584 | err = PTR_ERR(nsim_dev->fib_data); | |
1585 | goto err_debugfs_exit; | |
1586 | } | |
1587 | ||
82c93a87 | 1588 | err = nsim_dev_health_init(nsim_dev, devlink); |
d514f41e | 1589 | if (err) |
f57ab5b7 | 1590 | goto err_fib_destroy; |
d514f41e | 1591 | |
82c93a87 JP |
1592 | err = nsim_bpf_dev_init(nsim_dev); |
1593 | if (err) | |
1594 | goto err_health_exit; | |
1595 | ||
a8700c3d | 1596 | err = nsim_dev_psample_init(nsim_dev); |
7f36a77a JP |
1597 | if (err) |
1598 | goto err_bpf_dev_exit; | |
1599 | ||
1a6d7ae7 | 1600 | err = nsim_dev_hwstats_init(nsim_dev); |
a8700c3d IS |
1601 | if (err) |
1602 | goto err_psample_exit; | |
1603 | ||
1a6d7ae7 PM |
1604 | err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count); |
1605 | if (err) | |
1606 | goto err_hwstats_exit; | |
1607 | ||
160dc373 | 1608 | nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY; |
012ec02a | 1609 | devl_unlock(devlink); |
bfcccfe7 | 1610 | return 0; |
37923ed6 | 1611 | |
1a6d7ae7 PM |
1612 | err_hwstats_exit: |
1613 | nsim_dev_hwstats_exit(nsim_dev); | |
a8700c3d IS |
1614 | err_psample_exit: |
1615 | nsim_dev_psample_exit(nsim_dev); | |
7f36a77a JP |
1616 | err_bpf_dev_exit: |
1617 | nsim_bpf_dev_exit(nsim_dev); | |
82c93a87 JP |
1618 | err_health_exit: |
1619 | nsim_dev_health_exit(nsim_dev); | |
f57ab5b7 IS |
1620 | err_fib_destroy: |
1621 | nsim_fib_destroy(devlink, nsim_dev->fib_data); | |
d514f41e JP |
1622 | err_debugfs_exit: |
1623 | nsim_dev_debugfs_exit(nsim_dev); | |
da58f90f IS |
1624 | err_traps_exit: |
1625 | nsim_dev_traps_exit(devlink); | |
4418f862 JP |
1626 | err_dummy_region_exit: |
1627 | nsim_dev_dummy_region_exit(nsim_dev); | |
150e8f8a | 1628 | err_params_unregister: |
075935f0 JP |
1629 | devl_params_unregister(devlink, nsim_devlink_params, |
1630 | ARRAY_SIZE(nsim_devlink_params)); | |
5c5ea1d0 | 1631 | err_resource_unregister: |
012ec02a | 1632 | devl_resources_unregister(devlink); |
82a3aef2 JK |
1633 | err_dl_unregister: |
1634 | devl_unregister(devlink); | |
5e388f3d JK |
1635 | err_vfc_free: |
1636 | kfree(nsim_dev->vfconfigs); | |
012ec02a JP |
1637 | err_devlink_unlock: |
1638 | devl_unlock(devlink); | |
37923ed6 | 1639 | devlink_free(devlink); |
5e388f3d | 1640 | dev_set_drvdata(&nsim_bus_dev->dev, NULL); |
bfcccfe7 | 1641 | return err; |
37923ed6 DA |
1642 | } |
1643 | ||
75ba029f | 1644 | static void nsim_dev_reload_destroy(struct nsim_dev *nsim_dev) |
37923ed6 | 1645 | { |
a60f9e48 | 1646 | struct devlink *devlink = priv_to_devlink(nsim_dev); |
37923ed6 | 1647 | |
75ba029f JP |
1648 | if (devlink_is_reload_failed(devlink)) |
1649 | return; | |
8526ad96 | 1650 | debugfs_remove(nsim_dev->take_snapshot); |
32ac15d8 | 1651 | |
1c401078 JK |
1652 | if (nsim_dev_get_vfs(nsim_dev)) { |
1653 | nsim_bus_dev_set_vfs(nsim_dev->nsim_bus_dev, 0); | |
1654 | if (nsim_esw_mode_is_switchdev(nsim_dev)) | |
1655 | nsim_esw_legacy_enable(nsim_dev, NULL); | |
1656 | } | |
32ac15d8 | 1657 | |
7f36a77a | 1658 | nsim_dev_port_del_all(nsim_dev); |
1a6d7ae7 | 1659 | nsim_dev_hwstats_exit(nsim_dev); |
a8700c3d | 1660 | nsim_dev_psample_exit(nsim_dev); |
82c93a87 | 1661 | nsim_dev_health_exit(nsim_dev); |
f57ab5b7 | 1662 | nsim_fib_destroy(devlink, nsim_dev->fib_data); |
da58f90f | 1663 | nsim_dev_traps_exit(devlink); |
4418f862 | 1664 | nsim_dev_dummy_region_exit(nsim_dev); |
75ba029f JP |
1665 | } |
1666 | ||
a66f64b8 | 1667 | void nsim_drv_remove(struct nsim_bus_dev *nsim_bus_dev) |
75ba029f | 1668 | { |
bfcccfe7 | 1669 | struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev); |
75ba029f JP |
1670 | struct devlink *devlink = priv_to_devlink(nsim_dev); |
1671 | ||
012ec02a | 1672 | devl_lock(devlink); |
75ba029f JP |
1673 | nsim_dev_reload_destroy(nsim_dev); |
1674 | ||
1675 | nsim_bpf_dev_exit(nsim_dev); | |
1676 | nsim_dev_debugfs_exit(nsim_dev); | |
075935f0 JP |
1677 | devl_params_unregister(devlink, nsim_devlink_params, |
1678 | ARRAY_SIZE(nsim_devlink_params)); | |
012ec02a | 1679 | devl_resources_unregister(devlink); |
82a3aef2 | 1680 | devl_unregister(devlink); |
5e388f3d | 1681 | kfree(nsim_dev->vfconfigs); |
064bc731 | 1682 | kfree(nsim_dev->fa_cookie); |
012ec02a | 1683 | devl_unlock(devlink); |
5fc49422 | 1684 | devlink_free(devlink); |
5e388f3d | 1685 | dev_set_drvdata(&nsim_bus_dev->dev, NULL); |
37923ed6 | 1686 | } |
d514f41e | 1687 | |
794b2c05 | 1688 | static struct nsim_dev_port * |
814b9ce6 DL |
1689 | __nsim_dev_port_lookup(struct nsim_dev *nsim_dev, enum nsim_dev_port_type type, |
1690 | unsigned int port_index) | |
794b2c05 JP |
1691 | { |
1692 | struct nsim_dev_port *nsim_dev_port; | |
1693 | ||
814b9ce6 | 1694 | port_index = nsim_dev_port_index(type, port_index); |
794b2c05 JP |
1695 | list_for_each_entry(nsim_dev_port, &nsim_dev->port_list, list) |
1696 | if (nsim_dev_port->port_index == port_index) | |
1697 | return nsim_dev_port; | |
1698 | return NULL; | |
1699 | } | |
1700 | ||
a66f64b8 | 1701 | int nsim_drv_port_add(struct nsim_bus_dev *nsim_bus_dev, enum nsim_dev_port_type type, |
794b2c05 JP |
1702 | unsigned int port_index) |
1703 | { | |
1704 | struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev); | |
1705 | int err; | |
1706 | ||
76eea6c2 | 1707 | devl_lock(priv_to_devlink(nsim_dev)); |
814b9ce6 | 1708 | if (__nsim_dev_port_lookup(nsim_dev, type, port_index)) |
794b2c05 JP |
1709 | err = -EEXIST; |
1710 | else | |
814b9ce6 | 1711 | err = __nsim_dev_port_add(nsim_dev, type, port_index); |
76eea6c2 | 1712 | devl_unlock(priv_to_devlink(nsim_dev)); |
794b2c05 JP |
1713 | return err; |
1714 | } | |
1715 | ||
a66f64b8 | 1716 | int nsim_drv_port_del(struct nsim_bus_dev *nsim_bus_dev, enum nsim_dev_port_type type, |
794b2c05 JP |
1717 | unsigned int port_index) |
1718 | { | |
1719 | struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev); | |
1720 | struct nsim_dev_port *nsim_dev_port; | |
1721 | int err = 0; | |
1722 | ||
76eea6c2 | 1723 | devl_lock(priv_to_devlink(nsim_dev)); |
814b9ce6 | 1724 | nsim_dev_port = __nsim_dev_port_lookup(nsim_dev, type, port_index); |
794b2c05 JP |
1725 | if (!nsim_dev_port) |
1726 | err = -ENOENT; | |
1727 | else | |
1728 | __nsim_dev_port_del(nsim_dev_port); | |
76eea6c2 | 1729 | devl_unlock(priv_to_devlink(nsim_dev)); |
794b2c05 JP |
1730 | return err; |
1731 | } | |
1732 | ||
1c401078 JK |
1733 | int nsim_drv_configure_vfs(struct nsim_bus_dev *nsim_bus_dev, |
1734 | unsigned int num_vfs) | |
1735 | { | |
1736 | struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev); | |
aff3a925 | 1737 | struct devlink *devlink = priv_to_devlink(nsim_dev); |
047304d0 | 1738 | int ret = 0; |
1c401078 | 1739 | |
aff3a925 | 1740 | devl_lock(devlink); |
047304d0 | 1741 | if (nsim_bus_dev->num_vfs == num_vfs) |
1c401078 | 1742 | goto exit_unlock; |
1c401078 JK |
1743 | if (nsim_bus_dev->num_vfs && num_vfs) { |
1744 | ret = -EBUSY; | |
1745 | goto exit_unlock; | |
1746 | } | |
1747 | if (nsim_bus_dev->max_vfs < num_vfs) { | |
1748 | ret = -ENOMEM; | |
1749 | goto exit_unlock; | |
1750 | } | |
1751 | ||
1752 | nsim_bus_dev_set_vfs(nsim_bus_dev, num_vfs); | |
1753 | if (nsim_esw_mode_is_switchdev(nsim_dev)) { | |
1754 | if (num_vfs) { | |
1755 | ret = nsim_esw_switchdev_enable(nsim_dev, NULL); | |
1756 | if (ret) { | |
1757 | nsim_bus_dev_set_vfs(nsim_bus_dev, 0); | |
1758 | goto exit_unlock; | |
1759 | } | |
1760 | } else { | |
1761 | nsim_esw_legacy_enable(nsim_dev, NULL); | |
1762 | } | |
1763 | } | |
1764 | ||
1765 | exit_unlock: | |
aff3a925 | 1766 | devl_unlock(devlink); |
1c401078 JK |
1767 | |
1768 | return ret; | |
1769 | } | |
1770 | ||
d514f41e JP |
1771 | int nsim_dev_init(void) |
1772 | { | |
ab1d0cc0 | 1773 | nsim_dev_ddir = debugfs_create_dir(DRV_NAME, NULL); |
34611e69 | 1774 | return PTR_ERR_OR_ZERO(nsim_dev_ddir); |
d514f41e JP |
1775 | } |
1776 | ||
1777 | void nsim_dev_exit(void) | |
1778 | { | |
1779 | debugfs_remove_recursive(nsim_dev_ddir); | |
1780 | } |