projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
| f073c7ca TI |
2 | #include <linux/kernel.h> |
| 3 | #include <linux/module.h> | |
| 4 | #include <linux/device.h> | |
| 5 | #include <linux/netdevice.h> | |
| 6 | ||
| 1ef8019b DM |
7 | #include <net/bonding.h> |
| 8 | #include <net/bond_alb.h> | |
| f073c7ca | 9 | |
| 96ca7ffe | 10 | #if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_NET_NS) |
| f073c7ca TI |
11 | |
| 12 | #include <linux/debugfs.h> | |
| 13 | #include <linux/seq_file.h> | |
| 14 | ||
| 15 | static struct dentry *bonding_debug_root; | |
| 16 | ||
| 547942ca | 17 | /* Show RLB hash table */ |
| caafa842 TI |
18 | static 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 | ||
| 01844098 | 25 | if (BOND_MODE(bond) != BOND_MODE_ALB) |
| caafa842 TI |
26 | return 0; |
| 27 | ||
| 28 | seq_printf(m, "SourceIP DestinationIP " | |
| 29 | "Destination MAC DEV\n"); | |
| 30 | ||
| 4bab16d7 | 31 | spin_lock_bh(&bond->mode_lock); |
| caafa842 | 32 | |
| e53665c6 JB |
33 | hash_index = bond_info->rx_hashtbl_used_head; |
| 34 | for (; hash_index != RLB_NULL_INDEX; | |
| 35 | hash_index = client_info->used_next) { | |
| caafa842 TI |
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 | ||
| 4bab16d7 | 44 | spin_unlock_bh(&bond->mode_lock); |
| caafa842 TI |
45 | |
| 46 | return 0; | |
| 47 | } | |
| 4e6feb7a | 48 | DEFINE_SHOW_ATTRIBUTE(bond_debug_rlb_hash); |
| caafa842 | 49 | |
| f073c7ca TI |
50 | void 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 | ||
| caafa842 TI |
58 | debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir, |
| 59 | bond, &bond_debug_rlb_hash_fops); | |
| f073c7ca TI |
60 | } |
| 61 | ||
| 62 | void bond_debug_unregister(struct bonding *bond) | |
| 63 | { | |
| 64 | if (!bonding_debug_root) | |
| 65 | return; | |
| 66 | ||
| 67 | debugfs_remove_recursive(bond->debug_dir); | |
| 68 | } | |
| 69 | ||
| 70 | void 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); | |
| cbe83191 | 79 | if (!IS_ERR(d)) { |
| f073c7ca TI |
80 | bond->debug_dir = d; |
| 81 | } else { | |
| 9ef1cf16 | 82 | netdev_warn(bond->dev, "failed to reregister, so just unregister old one\n"); |
| f073c7ca TI |
83 | bond_debug_unregister(bond); |
| 84 | } | |
| 85 | } | |
| 86 | ||
| 87 | void bond_create_debugfs(void) | |
| 88 | { | |
| 89 | bonding_debug_root = debugfs_create_dir("bonding", NULL); | |
| 90 | ||
| 52333512 | 91 | if (!bonding_debug_root) |
| 91565ebb | 92 | pr_warn("Warning: Cannot create bonding directory in debugfs\n"); |
| f073c7ca TI |
93 | } |
| 94 | ||
| 95 | void 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 | ||
| 104 | void bond_debug_register(struct bonding *bond) | |
| 105 | { | |
| 106 | } | |
| 107 | ||
| 108 | void bond_debug_unregister(struct bonding *bond) | |
| 109 | { | |
| 110 | } | |
| 111 | ||
| 112 | void bond_debug_reregister(struct bonding *bond) | |
| 113 | { | |
| 114 | } | |
| 115 | ||
| 116 | void bond_create_debugfs(void) | |
| 117 | { | |
| 118 | } | |
| 119 | ||
| 120 | void bond_destroy_debugfs(void) | |
| 121 | { | |
| 122 | } | |
| 123 | ||
| 124 | #endif /* CONFIG_DEBUG_FS */ |