cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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bond_debugfs.c (2571B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <linux/kernel.h>
      3#include <linux/module.h>
      4#include <linux/device.h>
      5#include <linux/netdevice.h>
      6
      7#include <net/bonding.h>
      8#include <net/bond_alb.h>
      9
     10#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_NET_NS)
     11
     12#include <linux/debugfs.h>
     13#include <linux/seq_file.h>
     14
     15static struct dentry *bonding_debug_root;
     16
     17/* Show RLB hash table */
     18static int bond_debug_rlb_hash_show(struct seq_file *m, void *v)
     19{
     20	struct bonding *bond = m->private;
     21	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
     22	struct rlb_client_info *client_info;
     23	u32 hash_index;
     24
     25	if (BOND_MODE(bond) != BOND_MODE_ALB)
     26		return 0;
     27
     28	seq_printf(m, "SourceIP        DestinationIP   "
     29			"Destination MAC   DEV\n");
     30
     31	spin_lock_bh(&bond->mode_lock);
     32
     33	hash_index = bond_info->rx_hashtbl_used_head;
     34	for (; hash_index != RLB_NULL_INDEX;
     35	     hash_index = client_info->used_next) {
     36		client_info = &(bond_info->rx_hashtbl[hash_index]);
     37		seq_printf(m, "%-15pI4 %-15pI4 %-17pM %s\n",
     38			&client_info->ip_src,
     39			&client_info->ip_dst,
     40			&client_info->mac_dst,
     41			client_info->slave->dev->name);
     42	}
     43
     44	spin_unlock_bh(&bond->mode_lock);
     45
     46	return 0;
     47}
     48DEFINE_SHOW_ATTRIBUTE(bond_debug_rlb_hash);
     49
     50void bond_debug_register(struct bonding *bond)
     51{
     52	if (!bonding_debug_root)
     53		return;
     54
     55	bond->debug_dir =
     56		debugfs_create_dir(bond->dev->name, bonding_debug_root);
     57
     58	debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir,
     59				bond, &bond_debug_rlb_hash_fops);
     60}
     61
     62void bond_debug_unregister(struct bonding *bond)
     63{
     64	if (!bonding_debug_root)
     65		return;
     66
     67	debugfs_remove_recursive(bond->debug_dir);
     68}
     69
     70void bond_debug_reregister(struct bonding *bond)
     71{
     72	struct dentry *d;
     73
     74	if (!bonding_debug_root)
     75		return;
     76
     77	d = debugfs_rename(bonding_debug_root, bond->debug_dir,
     78			   bonding_debug_root, bond->dev->name);
     79	if (d) {
     80		bond->debug_dir = d;
     81	} else {
     82		netdev_warn(bond->dev, "failed to reregister, so just unregister old one\n");
     83		bond_debug_unregister(bond);
     84	}
     85}
     86
     87void bond_create_debugfs(void)
     88{
     89	bonding_debug_root = debugfs_create_dir("bonding", NULL);
     90
     91	if (!bonding_debug_root)
     92		pr_warn("Warning: Cannot create bonding directory in debugfs\n");
     93}
     94
     95void bond_destroy_debugfs(void)
     96{
     97	debugfs_remove_recursive(bonding_debug_root);
     98	bonding_debug_root = NULL;
     99}
    100
    101
    102#else /* !CONFIG_DEBUG_FS */
    103
    104void bond_debug_register(struct bonding *bond)
    105{
    106}
    107
    108void bond_debug_unregister(struct bonding *bond)
    109{
    110}
    111
    112void bond_debug_reregister(struct bonding *bond)
    113{
    114}
    115
    116void bond_create_debugfs(void)
    117{
    118}
    119
    120void bond_destroy_debugfs(void)
    121{
    122}
    123
    124#endif /* CONFIG_DEBUG_FS */