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
32 * $Id: ipoib_fs.c 1389 2004-12-27 22:56:47Z roland $
35 #include <linux/err.h>
36 #include <linux/seq_file.h>
38 struct file_operations;
40 #include <linux/debugfs.h>
44 static struct dentry *ipoib_root;
46 static void *ipoib_mcg_seq_start(struct seq_file *file, loff_t *pos)
48 struct ipoib_mcast_iter *iter;
51 iter = ipoib_mcast_iter_init(file->private);
56 if (ipoib_mcast_iter_next(iter)) {
57 ipoib_mcast_iter_free(iter);
65 static void *ipoib_mcg_seq_next(struct seq_file *file, void *iter_ptr,
68 struct ipoib_mcast_iter *iter = iter_ptr;
72 if (ipoib_mcast_iter_next(iter)) {
73 ipoib_mcast_iter_free(iter);
80 static void ipoib_mcg_seq_stop(struct seq_file *file, void *iter_ptr)
85 static int ipoib_mcg_seq_show(struct seq_file *file, void *iter_ptr)
87 struct ipoib_mcast_iter *iter = iter_ptr;
88 char gid_buf[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"];
91 unsigned long created;
92 unsigned int queuelen, complete, send_only;
95 ipoib_mcast_iter_read(iter, &mgid, &created, &queuelen,
96 &complete, &send_only);
98 for (n = 0, i = 0; i < sizeof mgid / 2; ++i) {
99 n += sprintf(gid_buf + n, "%x",
100 be16_to_cpu(((__be16 *) mgid.raw)[i]));
101 if (i < sizeof mgid / 2 - 1)
106 seq_printf(file, "GID: %*s", -(1 + (int) sizeof gid_buf), gid_buf);
109 " created: %10ld queuelen: %4d complete: %d send_only: %d\n",
110 created, queuelen, complete, send_only);
115 static struct seq_operations ipoib_seq_ops = {
116 .start = ipoib_mcg_seq_start,
117 .next = ipoib_mcg_seq_next,
118 .stop = ipoib_mcg_seq_stop,
119 .show = ipoib_mcg_seq_show,
122 static int ipoib_mcg_open(struct inode *inode, struct file *file)
124 struct seq_file *seq;
127 ret = seq_open(file, &ipoib_seq_ops);
131 seq = file->private_data;
132 seq->private = inode->u.generic_ip;
137 static struct file_operations ipoib_fops = {
138 .owner = THIS_MODULE,
139 .open = ipoib_mcg_open,
142 .release = seq_release
145 int ipoib_create_debug_file(struct net_device *dev)
147 struct ipoib_dev_priv *priv = netdev_priv(dev);
148 char name[IFNAMSIZ + sizeof "_mcg"];
150 snprintf(name, sizeof name, "%s_mcg", dev->name);
152 priv->mcg_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO,
153 ipoib_root, dev, &ipoib_fops);
155 return priv->mcg_dentry ? 0 : -ENOMEM;
158 void ipoib_delete_debug_file(struct net_device *dev)
160 struct ipoib_dev_priv *priv = netdev_priv(dev);
162 if (priv->mcg_dentry)
163 debugfs_remove(priv->mcg_dentry);
166 int ipoib_register_debugfs(void)
168 ipoib_root = debugfs_create_dir("ipoib", NULL);
169 return ipoib_root ? 0 : -ENOMEM;
172 void ipoib_unregister_debugfs(void)
174 debugfs_remove(ipoib_root);