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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2004 Topspin Communications. 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 | * $Id: ipoib_fs.c 1389 2004-12-27 22:56:47Z roland $ | |
33 | */ | |
34 | ||
9adec1a8 | 35 | #include <linux/err.h> |
1da177e4 LT |
36 | #include <linux/seq_file.h> |
37 | ||
9adec1a8 | 38 | struct file_operations; |
1da177e4 | 39 | |
9adec1a8 RD |
40 | #include <linux/debugfs.h> |
41 | ||
42 | #include "ipoib.h" | |
1da177e4 | 43 | |
1da177e4 | 44 | static struct dentry *ipoib_root; |
1da177e4 | 45 | |
1732b0ef RD |
46 | static void format_gid(union ib_gid *gid, char *buf) |
47 | { | |
48 | int i, n; | |
49 | ||
50 | for (n = 0, i = 0; i < 8; ++i) { | |
51 | n += sprintf(buf + n, "%x", | |
52 | be16_to_cpu(((__be16 *) gid->raw)[i])); | |
53 | if (i < 7) | |
54 | buf[n++] = ':'; | |
55 | } | |
56 | } | |
57 | ||
1da177e4 LT |
58 | static void *ipoib_mcg_seq_start(struct seq_file *file, loff_t *pos) |
59 | { | |
60 | struct ipoib_mcast_iter *iter; | |
61 | loff_t n = *pos; | |
62 | ||
63 | iter = ipoib_mcast_iter_init(file->private); | |
64 | if (!iter) | |
65 | return NULL; | |
66 | ||
67 | while (n--) { | |
68 | if (ipoib_mcast_iter_next(iter)) { | |
1732b0ef | 69 | kfree(iter); |
1da177e4 LT |
70 | return NULL; |
71 | } | |
72 | } | |
73 | ||
74 | return iter; | |
75 | } | |
76 | ||
77 | static void *ipoib_mcg_seq_next(struct seq_file *file, void *iter_ptr, | |
78 | loff_t *pos) | |
79 | { | |
80 | struct ipoib_mcast_iter *iter = iter_ptr; | |
81 | ||
82 | (*pos)++; | |
83 | ||
84 | if (ipoib_mcast_iter_next(iter)) { | |
1732b0ef | 85 | kfree(iter); |
1da177e4 LT |
86 | return NULL; |
87 | } | |
88 | ||
89 | return iter; | |
90 | } | |
91 | ||
92 | static void ipoib_mcg_seq_stop(struct seq_file *file, void *iter_ptr) | |
93 | { | |
94 | /* nothing for now */ | |
95 | } | |
96 | ||
97 | static int ipoib_mcg_seq_show(struct seq_file *file, void *iter_ptr) | |
98 | { | |
99 | struct ipoib_mcast_iter *iter = iter_ptr; | |
100 | char gid_buf[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"]; | |
101 | union ib_gid mgid; | |
1da177e4 LT |
102 | unsigned long created; |
103 | unsigned int queuelen, complete, send_only; | |
104 | ||
1732b0ef RD |
105 | if (!iter) |
106 | return 0; | |
1da177e4 | 107 | |
1732b0ef RD |
108 | ipoib_mcast_iter_read(iter, &mgid, &created, &queuelen, |
109 | &complete, &send_only); | |
1da177e4 | 110 | |
1732b0ef | 111 | format_gid(&mgid, gid_buf); |
1da177e4 LT |
112 | |
113 | seq_printf(file, | |
1732b0ef RD |
114 | "GID: %s\n" |
115 | " created: %10ld\n" | |
116 | " queuelen: %9d\n" | |
117 | " complete: %9s\n" | |
118 | " send_only: %8s\n" | |
119 | "\n", | |
120 | gid_buf, created, queuelen, | |
121 | complete ? "yes" : "no", | |
122 | send_only ? "yes" : "no"); | |
1da177e4 LT |
123 | |
124 | return 0; | |
125 | } | |
126 | ||
1732b0ef | 127 | static struct seq_operations ipoib_mcg_seq_ops = { |
1da177e4 LT |
128 | .start = ipoib_mcg_seq_start, |
129 | .next = ipoib_mcg_seq_next, | |
130 | .stop = ipoib_mcg_seq_stop, | |
131 | .show = ipoib_mcg_seq_show, | |
132 | }; | |
133 | ||
134 | static int ipoib_mcg_open(struct inode *inode, struct file *file) | |
135 | { | |
136 | struct seq_file *seq; | |
137 | int ret; | |
138 | ||
1732b0ef | 139 | ret = seq_open(file, &ipoib_mcg_seq_ops); |
1da177e4 LT |
140 | if (ret) |
141 | return ret; | |
142 | ||
143 | seq = file->private_data; | |
144 | seq->private = inode->u.generic_ip; | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
1732b0ef | 149 | static struct file_operations ipoib_mcg_fops = { |
1da177e4 LT |
150 | .owner = THIS_MODULE, |
151 | .open = ipoib_mcg_open, | |
152 | .read = seq_read, | |
153 | .llseek = seq_lseek, | |
154 | .release = seq_release | |
155 | }; | |
156 | ||
1732b0ef RD |
157 | static void *ipoib_path_seq_start(struct seq_file *file, loff_t *pos) |
158 | { | |
159 | struct ipoib_path_iter *iter; | |
160 | loff_t n = *pos; | |
161 | ||
162 | iter = ipoib_path_iter_init(file->private); | |
163 | if (!iter) | |
164 | return NULL; | |
165 | ||
166 | while (n--) { | |
167 | if (ipoib_path_iter_next(iter)) { | |
168 | kfree(iter); | |
169 | return NULL; | |
170 | } | |
171 | } | |
172 | ||
173 | return iter; | |
174 | } | |
175 | ||
176 | static void *ipoib_path_seq_next(struct seq_file *file, void *iter_ptr, | |
177 | loff_t *pos) | |
178 | { | |
179 | struct ipoib_path_iter *iter = iter_ptr; | |
180 | ||
181 | (*pos)++; | |
182 | ||
183 | if (ipoib_path_iter_next(iter)) { | |
184 | kfree(iter); | |
185 | return NULL; | |
186 | } | |
187 | ||
188 | return iter; | |
189 | } | |
190 | ||
191 | static void ipoib_path_seq_stop(struct seq_file *file, void *iter_ptr) | |
192 | { | |
193 | /* nothing for now */ | |
194 | } | |
195 | ||
196 | static int ipoib_path_seq_show(struct seq_file *file, void *iter_ptr) | |
197 | { | |
198 | struct ipoib_path_iter *iter = iter_ptr; | |
199 | char gid_buf[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"]; | |
200 | struct ipoib_path path; | |
201 | int rate; | |
202 | ||
203 | if (!iter) | |
204 | return 0; | |
205 | ||
206 | ipoib_path_iter_read(iter, &path); | |
207 | ||
208 | format_gid(&path.pathrec.dgid, gid_buf); | |
209 | ||
210 | seq_printf(file, | |
211 | "GID: %s\n" | |
212 | " complete: %6s\n", | |
213 | gid_buf, path.pathrec.dlid ? "yes" : "no"); | |
214 | ||
215 | if (path.pathrec.dlid) { | |
216 | rate = ib_sa_rate_enum_to_int(path.pathrec.rate) * 25; | |
217 | ||
218 | seq_printf(file, | |
219 | " DLID: 0x%04x\n" | |
220 | " SL: %12d\n" | |
221 | " rate: %*d%s Gb/sec\n", | |
222 | be16_to_cpu(path.pathrec.dlid), | |
223 | path.pathrec.sl, | |
224 | 10 - ((rate % 10) ? 2 : 0), | |
225 | rate / 10, rate % 10 ? ".5" : ""); | |
226 | } | |
227 | ||
228 | seq_putc(file, '\n'); | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
233 | static struct seq_operations ipoib_path_seq_ops = { | |
234 | .start = ipoib_path_seq_start, | |
235 | .next = ipoib_path_seq_next, | |
236 | .stop = ipoib_path_seq_stop, | |
237 | .show = ipoib_path_seq_show, | |
238 | }; | |
239 | ||
240 | static int ipoib_path_open(struct inode *inode, struct file *file) | |
241 | { | |
242 | struct seq_file *seq; | |
243 | int ret; | |
244 | ||
245 | ret = seq_open(file, &ipoib_path_seq_ops); | |
246 | if (ret) | |
247 | return ret; | |
248 | ||
249 | seq = file->private_data; | |
250 | seq->private = inode->u.generic_ip; | |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
255 | static struct file_operations ipoib_path_fops = { | |
256 | .owner = THIS_MODULE, | |
257 | .open = ipoib_path_open, | |
258 | .read = seq_read, | |
259 | .llseek = seq_lseek, | |
260 | .release = seq_release | |
261 | }; | |
262 | ||
263 | void ipoib_create_debug_files(struct net_device *dev) | |
1da177e4 LT |
264 | { |
265 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
1732b0ef | 266 | char name[IFNAMSIZ + sizeof "_path"]; |
1da177e4 LT |
267 | |
268 | snprintf(name, sizeof name, "%s_mcg", dev->name); | |
9adec1a8 | 269 | priv->mcg_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, |
1732b0ef RD |
270 | ipoib_root, dev, &ipoib_mcg_fops); |
271 | if (!priv->mcg_dentry) | |
272 | ipoib_warn(priv, "failed to create mcg debug file\n"); | |
273 | ||
274 | snprintf(name, sizeof name, "%s_path", dev->name); | |
275 | priv->path_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, | |
276 | ipoib_root, dev, &ipoib_path_fops); | |
277 | if (!priv->path_dentry) | |
278 | ipoib_warn(priv, "failed to create path debug file\n"); | |
1da177e4 LT |
279 | } |
280 | ||
1732b0ef | 281 | void ipoib_delete_debug_files(struct net_device *dev) |
1da177e4 LT |
282 | { |
283 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
284 | ||
9adec1a8 RD |
285 | if (priv->mcg_dentry) |
286 | debugfs_remove(priv->mcg_dentry); | |
1732b0ef RD |
287 | if (priv->path_dentry) |
288 | debugfs_remove(priv->path_dentry); | |
1da177e4 LT |
289 | } |
290 | ||
1da177e4 LT |
291 | int ipoib_register_debugfs(void) |
292 | { | |
9adec1a8 RD |
293 | ipoib_root = debugfs_create_dir("ipoib", NULL); |
294 | return ipoib_root ? 0 : -ENOMEM; | |
1da177e4 LT |
295 | } |
296 | ||
297 | void ipoib_unregister_debugfs(void) | |
298 | { | |
9adec1a8 | 299 | debugfs_remove(ipoib_root); |
1da177e4 | 300 | } |