2 * Copyright (c) 2004 Topspin Communications. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
33 #include <linux/err.h>
34 #include <linux/seq_file.h>
35 #include <linux/slab.h>
37 struct file_operations;
39 #include <linux/debugfs.h>
43 static struct dentry *ipoib_root;
45 static void format_gid(union ib_gid *gid, char *buf)
49 for (n = 0, i = 0; i < 8; ++i) {
50 n += sprintf(buf + n, "%x",
51 be16_to_cpu(((__be16 *) gid->raw)[i]));
57 static void *ipoib_mcg_seq_start(struct seq_file *file, loff_t *pos)
59 struct ipoib_mcast_iter *iter;
62 iter = ipoib_mcast_iter_init(file->private);
67 if (ipoib_mcast_iter_next(iter)) {
76 static void *ipoib_mcg_seq_next(struct seq_file *file, void *iter_ptr,
79 struct ipoib_mcast_iter *iter = iter_ptr;
83 if (ipoib_mcast_iter_next(iter)) {
91 static void ipoib_mcg_seq_stop(struct seq_file *file, void *iter_ptr)
96 static int ipoib_mcg_seq_show(struct seq_file *file, void *iter_ptr)
98 struct ipoib_mcast_iter *iter = iter_ptr;
99 char gid_buf[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"];
101 unsigned long created;
102 unsigned int queuelen, complete, send_only;
107 ipoib_mcast_iter_read(iter, &mgid, &created, &queuelen,
108 &complete, &send_only);
110 format_gid(&mgid, gid_buf);
119 gid_buf, created, queuelen,
120 complete ? "yes" : "no",
121 send_only ? "yes" : "no");
126 static const struct seq_operations ipoib_mcg_seq_ops = {
127 .start = ipoib_mcg_seq_start,
128 .next = ipoib_mcg_seq_next,
129 .stop = ipoib_mcg_seq_stop,
130 .show = ipoib_mcg_seq_show,
133 static int ipoib_mcg_open(struct inode *inode, struct file *file)
135 struct seq_file *seq;
138 ret = seq_open(file, &ipoib_mcg_seq_ops);
142 seq = file->private_data;
143 seq->private = inode->i_private;
148 static const struct file_operations ipoib_mcg_fops = {
149 .owner = THIS_MODULE,
150 .open = ipoib_mcg_open,
153 .release = seq_release
156 static void *ipoib_path_seq_start(struct seq_file *file, loff_t *pos)
158 struct ipoib_path_iter *iter;
161 iter = ipoib_path_iter_init(file->private);
166 if (ipoib_path_iter_next(iter)) {
175 static void *ipoib_path_seq_next(struct seq_file *file, void *iter_ptr,
178 struct ipoib_path_iter *iter = iter_ptr;
182 if (ipoib_path_iter_next(iter)) {
190 static void ipoib_path_seq_stop(struct seq_file *file, void *iter_ptr)
192 /* nothing for now */
195 static int ipoib_path_seq_show(struct seq_file *file, void *iter_ptr)
197 struct ipoib_path_iter *iter = iter_ptr;
198 char gid_buf[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"];
199 struct ipoib_path path;
205 ipoib_path_iter_read(iter, &path);
207 format_gid(&path.pathrec.dgid, gid_buf);
212 gid_buf, path.pathrec.dlid ? "yes" : "no");
214 if (path.pathrec.dlid) {
215 rate = ib_rate_to_mbps(path.pathrec.rate);
220 " rate: %8d.%d Gb/sec\n",
221 be16_to_cpu(path.pathrec.dlid),
223 rate / 1000, rate % 1000);
226 seq_putc(file, '\n');
231 static const struct seq_operations ipoib_path_seq_ops = {
232 .start = ipoib_path_seq_start,
233 .next = ipoib_path_seq_next,
234 .stop = ipoib_path_seq_stop,
235 .show = ipoib_path_seq_show,
238 static int ipoib_path_open(struct inode *inode, struct file *file)
240 struct seq_file *seq;
243 ret = seq_open(file, &ipoib_path_seq_ops);
247 seq = file->private_data;
248 seq->private = inode->i_private;
253 static const struct file_operations ipoib_path_fops = {
254 .owner = THIS_MODULE,
255 .open = ipoib_path_open,
258 .release = seq_release
261 void ipoib_create_debug_files(struct net_device *dev)
263 struct ipoib_dev_priv *priv = netdev_priv(dev);
264 char name[IFNAMSIZ + sizeof "_path"];
266 snprintf(name, sizeof name, "%s_mcg", dev->name);
267 priv->mcg_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO,
268 ipoib_root, dev, &ipoib_mcg_fops);
269 if (!priv->mcg_dentry)
270 ipoib_warn(priv, "failed to create mcg debug file\n");
272 snprintf(name, sizeof name, "%s_path", dev->name);
273 priv->path_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO,
274 ipoib_root, dev, &ipoib_path_fops);
275 if (!priv->path_dentry)
276 ipoib_warn(priv, "failed to create path debug file\n");
279 void ipoib_delete_debug_files(struct net_device *dev)
281 struct ipoib_dev_priv *priv = netdev_priv(dev);
283 if (priv->mcg_dentry)
284 debugfs_remove(priv->mcg_dentry);
285 if (priv->path_dentry)
286 debugfs_remove(priv->path_dentry);
289 int ipoib_register_debugfs(void)
291 ipoib_root = debugfs_create_dir("ipoib", NULL);
292 return ipoib_root ? 0 : -ENOMEM;
295 void ipoib_unregister_debugfs(void)
297 debugfs_remove(ipoib_root);