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/*
* Copyright (c) 2004 Topspin Communications. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* $Id: ipoib_fs.c 1389 2004-12-27 22:56:47Z roland $
*/
#include <linux/err.h>
#include <linux/seq_file.h>
struct file_operations;
#include <linux/debugfs.h>
#include "ipoib.h"
static struct dentry *ipoib_root;
static void *ipoib_mcg_seq_start(struct seq_file *file, loff_t *pos)
{
struct ipoib_mcast_iter *iter;
loff_t n = *pos;
iter = ipoib_mcast_iter_init(file->private);
if (!iter)
return NULL;
while (n--) {
if (ipoib_mcast_iter_next(iter)) {
ipoib_mcast_iter_free(iter);
return NULL;
}
}
return iter;
}
static void *ipoib_mcg_seq_next(struct seq_file *file, void *iter_ptr,
loff_t *pos)
{
struct ipoib_mcast_iter *iter = iter_ptr;
(*pos)++;
if (ipoib_mcast_iter_next(iter)) {
ipoib_mcast_iter_free(iter);
return NULL;
}
return iter;
}
static void ipoib_mcg_seq_stop(struct seq_file *file, void *iter_ptr)
{
/* nothing for now */
}
static int ipoib_mcg_seq_show(struct seq_file *file, void *iter_ptr)
{
struct ipoib_mcast_iter *iter = iter_ptr;
char gid_buf[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"];
union ib_gid mgid;
int i, n;
unsigned long created;
unsigned int queuelen, complete, send_only;
if (iter) {
ipoib_mcast_iter_read(iter, &mgid, &created, &queuelen,
&complete, &send_only);
for (n = 0, i = 0; i < sizeof mgid / 2; ++i) {
n += sprintf(gid_buf + n, "%x",
be16_to_cpu(((__be16 *) mgid.raw)[i]));
if (i < sizeof mgid / 2 - 1)
gid_buf[n++] = ':';
}
}
seq_printf(file, "GID: %*s", -(1 + (int) sizeof gid_buf), gid_buf);
seq_printf(file,
" created: %10ld queuelen: %4d complete: %d send_only: %d\n",
created, queuelen, complete, send_only);
return 0;
}
static struct seq_operations ipoib_seq_ops = {
.start = ipoib_mcg_seq_start,
.next = ipoib_mcg_seq_next,
.stop = ipoib_mcg_seq_stop,
.show = ipoib_mcg_seq_show,
};
static int ipoib_mcg_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
int ret;
ret = seq_open(file, &ipoib_seq_ops);
if (ret)
return ret;
seq = file->private_data;
seq->private = inode->u.generic_ip;
return 0;
}
static struct file_operations ipoib_fops = {
.owner = THIS_MODULE,
.open = ipoib_mcg_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release
};
int ipoib_create_debug_file(struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
char name[IFNAMSIZ + sizeof "_mcg"];
snprintf(name, sizeof name, "%s_mcg", dev->name);
priv->mcg_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO,
ipoib_root, dev, &ipoib_fops);
return priv->mcg_dentry ? 0 : -ENOMEM;
}
void ipoib_delete_debug_file(struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
if (priv->mcg_dentry)
debugfs_remove(priv->mcg_dentry);
}
int ipoib_register_debugfs(void)
{
ipoib_root = debugfs_create_dir("ipoib", NULL);
return ipoib_root ? 0 : -ENOMEM;
}
void ipoib_unregister_debugfs(void)
{
debugfs_remove(ipoib_root);
}
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