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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 LT |
45 | |
46 | static void *ipoib_mcg_seq_start(struct seq_file *file, loff_t *pos) | |
47 | { | |
48 | struct ipoib_mcast_iter *iter; | |
49 | loff_t n = *pos; | |
50 | ||
51 | iter = ipoib_mcast_iter_init(file->private); | |
52 | if (!iter) | |
53 | return NULL; | |
54 | ||
55 | while (n--) { | |
56 | if (ipoib_mcast_iter_next(iter)) { | |
57 | ipoib_mcast_iter_free(iter); | |
58 | return NULL; | |
59 | } | |
60 | } | |
61 | ||
62 | return iter; | |
63 | } | |
64 | ||
65 | static void *ipoib_mcg_seq_next(struct seq_file *file, void *iter_ptr, | |
66 | loff_t *pos) | |
67 | { | |
68 | struct ipoib_mcast_iter *iter = iter_ptr; | |
69 | ||
70 | (*pos)++; | |
71 | ||
72 | if (ipoib_mcast_iter_next(iter)) { | |
73 | ipoib_mcast_iter_free(iter); | |
74 | return NULL; | |
75 | } | |
76 | ||
77 | return iter; | |
78 | } | |
79 | ||
80 | static void ipoib_mcg_seq_stop(struct seq_file *file, void *iter_ptr) | |
81 | { | |
82 | /* nothing for now */ | |
83 | } | |
84 | ||
85 | static int ipoib_mcg_seq_show(struct seq_file *file, void *iter_ptr) | |
86 | { | |
87 | struct ipoib_mcast_iter *iter = iter_ptr; | |
88 | char gid_buf[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"]; | |
89 | union ib_gid mgid; | |
90 | int i, n; | |
91 | unsigned long created; | |
92 | unsigned int queuelen, complete, send_only; | |
93 | ||
94 | if (iter) { | |
95 | ipoib_mcast_iter_read(iter, &mgid, &created, &queuelen, | |
96 | &complete, &send_only); | |
97 | ||
98 | for (n = 0, i = 0; i < sizeof mgid / 2; ++i) { | |
99 | n += sprintf(gid_buf + n, "%x", | |
97f52eb4 | 100 | be16_to_cpu(((__be16 *) mgid.raw)[i])); |
1da177e4 LT |
101 | if (i < sizeof mgid / 2 - 1) |
102 | gid_buf[n++] = ':'; | |
103 | } | |
104 | } | |
105 | ||
106 | seq_printf(file, "GID: %*s", -(1 + (int) sizeof gid_buf), gid_buf); | |
107 | ||
108 | seq_printf(file, | |
109 | " created: %10ld queuelen: %4d complete: %d send_only: %d\n", | |
110 | created, queuelen, complete, send_only); | |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
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, | |
120 | }; | |
121 | ||
122 | static int ipoib_mcg_open(struct inode *inode, struct file *file) | |
123 | { | |
124 | struct seq_file *seq; | |
125 | int ret; | |
126 | ||
127 | ret = seq_open(file, &ipoib_seq_ops); | |
128 | if (ret) | |
129 | return ret; | |
130 | ||
131 | seq = file->private_data; | |
132 | seq->private = inode->u.generic_ip; | |
133 | ||
134 | return 0; | |
135 | } | |
136 | ||
137 | static struct file_operations ipoib_fops = { | |
138 | .owner = THIS_MODULE, | |
139 | .open = ipoib_mcg_open, | |
140 | .read = seq_read, | |
141 | .llseek = seq_lseek, | |
142 | .release = seq_release | |
143 | }; | |
144 | ||
9adec1a8 | 145 | int ipoib_create_debug_file(struct net_device *dev) |
1da177e4 LT |
146 | { |
147 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
1da177e4 LT |
148 | char name[IFNAMSIZ + sizeof "_mcg"]; |
149 | ||
150 | snprintf(name, sizeof name, "%s_mcg", dev->name); | |
151 | ||
9adec1a8 RD |
152 | priv->mcg_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, |
153 | ipoib_root, dev, &ipoib_fops); | |
1da177e4 | 154 | |
9adec1a8 | 155 | return priv->mcg_dentry ? 0 : -ENOMEM; |
1da177e4 LT |
156 | } |
157 | ||
158 | void ipoib_delete_debug_file(struct net_device *dev) | |
159 | { | |
160 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
161 | ||
9adec1a8 RD |
162 | if (priv->mcg_dentry) |
163 | debugfs_remove(priv->mcg_dentry); | |
1da177e4 LT |
164 | } |
165 | ||
1da177e4 LT |
166 | int ipoib_register_debugfs(void) |
167 | { | |
9adec1a8 RD |
168 | ipoib_root = debugfs_create_dir("ipoib", NULL); |
169 | return ipoib_root ? 0 : -ENOMEM; | |
1da177e4 LT |
170 | } |
171 | ||
172 | void ipoib_unregister_debugfs(void) | |
173 | { | |
9adec1a8 | 174 | debugfs_remove(ipoib_root); |
1da177e4 | 175 | } |