| /* |
| * 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. |
| */ |
| |
| #include <linux/err.h> |
| #include <linux/seq_file.h> |
| #include <linux/slab.h> |
| |
| struct file_operations; |
| |
| #include <linux/debugfs.h> |
| #include <linux/export.h> |
| |
| #include "ipoib.h" |
| |
| static struct dentry *ipoib_root; |
| |
| static void format_gid(union ib_gid *gid, char *buf) |
| { |
| int i, n; |
| |
| for (n = 0, i = 0; i < 8; ++i) { |
| n += sprintf(buf + n, "%x", |
| be16_to_cpu(((__be16 *) gid->raw)[i])); |
| if (i < 7) |
| buf[n++] = ':'; |
| } |
| } |
| |
| 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)) { |
| kfree(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)) { |
| kfree(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; |
| unsigned long created; |
| unsigned int queuelen, complete, send_only; |
| |
| if (!iter) |
| return 0; |
| |
| ipoib_mcast_iter_read(iter, &mgid, &created, &queuelen, |
| &complete, &send_only); |
| |
| format_gid(&mgid, gid_buf); |
| |
| seq_printf(file, |
| "GID: %s\n" |
| " created: %10ld\n" |
| " queuelen: %9d\n" |
| " complete: %9s\n" |
| " send_only: %8s\n" |
| "\n", |
| gid_buf, created, queuelen, |
| complete ? "yes" : "no", |
| send_only ? "yes" : "no"); |
| |
| return 0; |
| } |
| |
| static const struct seq_operations ipoib_mcg_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_mcg_seq_ops); |
| if (ret) |
| return ret; |
| |
| seq = file->private_data; |
| seq->private = inode->i_private; |
| |
| return 0; |
| } |
| |
| static const struct file_operations ipoib_mcg_fops = { |
| .owner = THIS_MODULE, |
| .open = ipoib_mcg_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = seq_release |
| }; |
| |
| static void *ipoib_path_seq_start(struct seq_file *file, loff_t *pos) |
| { |
| struct ipoib_path_iter *iter; |
| loff_t n = *pos; |
| |
| iter = ipoib_path_iter_init(file->private); |
| if (!iter) |
| return NULL; |
| |
| while (n--) { |
| if (ipoib_path_iter_next(iter)) { |
| kfree(iter); |
| return NULL; |
| } |
| } |
| |
| return iter; |
| } |
| |
| static void *ipoib_path_seq_next(struct seq_file *file, void *iter_ptr, |
| loff_t *pos) |
| { |
| struct ipoib_path_iter *iter = iter_ptr; |
| |
| (*pos)++; |
| |
| if (ipoib_path_iter_next(iter)) { |
| kfree(iter); |
| return NULL; |
| } |
| |
| return iter; |
| } |
| |
| static void ipoib_path_seq_stop(struct seq_file *file, void *iter_ptr) |
| { |
| /* nothing for now */ |
| } |
| |
| static int ipoib_path_seq_show(struct seq_file *file, void *iter_ptr) |
| { |
| struct ipoib_path_iter *iter = iter_ptr; |
| char gid_buf[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"]; |
| struct ipoib_path path; |
| int rate; |
| |
| if (!iter) |
| return 0; |
| |
| ipoib_path_iter_read(iter, &path); |
| |
| format_gid(&path.pathrec.dgid, gid_buf); |
| |
| seq_printf(file, |
| "GID: %s\n" |
| " complete: %6s\n", |
| gid_buf, path.pathrec.dlid ? "yes" : "no"); |
| |
| if (path.pathrec.dlid) { |
| rate = ib_rate_to_mult(path.pathrec.rate) * 25; |
| |
| seq_printf(file, |
| " DLID: 0x%04x\n" |
| " SL: %12d\n" |
| " rate: %*d%s Gb/sec\n", |
| be16_to_cpu(path.pathrec.dlid), |
| path.pathrec.sl, |
| 10 - ((rate % 10) ? 2 : 0), |
| rate / 10, rate % 10 ? ".5" : ""); |
| } |
| |
| seq_putc(file, '\n'); |
| |
| return 0; |
| } |
| |
| static const struct seq_operations ipoib_path_seq_ops = { |
| .start = ipoib_path_seq_start, |
| .next = ipoib_path_seq_next, |
| .stop = ipoib_path_seq_stop, |
| .show = ipoib_path_seq_show, |
| }; |
| |
| static int ipoib_path_open(struct inode *inode, struct file *file) |
| { |
| struct seq_file *seq; |
| int ret; |
| |
| ret = seq_open(file, &ipoib_path_seq_ops); |
| if (ret) |
| return ret; |
| |
| seq = file->private_data; |
| seq->private = inode->i_private; |
| |
| return 0; |
| } |
| |
| static const struct file_operations ipoib_path_fops = { |
| .owner = THIS_MODULE, |
| .open = ipoib_path_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = seq_release |
| }; |
| |
| void ipoib_create_debug_files(struct net_device *dev) |
| { |
| struct ipoib_dev_priv *priv = netdev_priv(dev); |
| char name[IFNAMSIZ + sizeof "_path"]; |
| |
| snprintf(name, sizeof name, "%s_mcg", dev->name); |
| priv->mcg_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, |
| ipoib_root, dev, &ipoib_mcg_fops); |
| if (!priv->mcg_dentry) |
| ipoib_warn(priv, "failed to create mcg debug file\n"); |
| |
| snprintf(name, sizeof name, "%s_path", dev->name); |
| priv->path_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, |
| ipoib_root, dev, &ipoib_path_fops); |
| if (!priv->path_dentry) |
| ipoib_warn(priv, "failed to create path debug file\n"); |
| } |
| |
| void ipoib_delete_debug_files(struct net_device *dev) |
| { |
| struct ipoib_dev_priv *priv = netdev_priv(dev); |
| |
| if (priv->mcg_dentry) |
| debugfs_remove(priv->mcg_dentry); |
| if (priv->path_dentry) |
| debugfs_remove(priv->path_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); |
| } |