diff options
Diffstat (limited to 'drivers/net/bonding/bond_debugfs.c')
-rw-r--r-- | drivers/net/bonding/bond_debugfs.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/drivers/net/bonding/bond_debugfs.c b/drivers/net/bonding/bond_debugfs.c new file mode 100644 index 000000000..594094526 --- /dev/null +++ b/drivers/net/bonding/bond_debugfs.c @@ -0,0 +1,124 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/netdevice.h> + +#include <net/bonding.h> +#include <net/bond_alb.h> + +#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_NET_NS) + +#include <linux/debugfs.h> +#include <linux/seq_file.h> + +static struct dentry *bonding_debug_root; + +/* Show RLB hash table */ +static int bond_debug_rlb_hash_show(struct seq_file *m, void *v) +{ + struct bonding *bond = m->private; + struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); + struct rlb_client_info *client_info; + u32 hash_index; + + if (BOND_MODE(bond) != BOND_MODE_ALB) + return 0; + + seq_printf(m, "SourceIP DestinationIP " + "Destination MAC DEV\n"); + + spin_lock_bh(&bond->mode_lock); + + hash_index = bond_info->rx_hashtbl_used_head; + for (; hash_index != RLB_NULL_INDEX; + hash_index = client_info->used_next) { + client_info = &(bond_info->rx_hashtbl[hash_index]); + seq_printf(m, "%-15pI4 %-15pI4 %-17pM %s\n", + &client_info->ip_src, + &client_info->ip_dst, + &client_info->mac_dst, + client_info->slave->dev->name); + } + + spin_unlock_bh(&bond->mode_lock); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(bond_debug_rlb_hash); + +void bond_debug_register(struct bonding *bond) +{ + if (!bonding_debug_root) + return; + + bond->debug_dir = + debugfs_create_dir(bond->dev->name, bonding_debug_root); + + debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir, + bond, &bond_debug_rlb_hash_fops); +} + +void bond_debug_unregister(struct bonding *bond) +{ + if (!bonding_debug_root) + return; + + debugfs_remove_recursive(bond->debug_dir); +} + +void bond_debug_reregister(struct bonding *bond) +{ + struct dentry *d; + + if (!bonding_debug_root) + return; + + d = debugfs_rename(bonding_debug_root, bond->debug_dir, + bonding_debug_root, bond->dev->name); + if (!IS_ERR(d)) { + bond->debug_dir = d; + } else { + netdev_warn(bond->dev, "failed to reregister, so just unregister old one\n"); + bond_debug_unregister(bond); + } +} + +void bond_create_debugfs(void) +{ + bonding_debug_root = debugfs_create_dir("bonding", NULL); + + if (!bonding_debug_root) + pr_warn("Warning: Cannot create bonding directory in debugfs\n"); +} + +void bond_destroy_debugfs(void) +{ + debugfs_remove_recursive(bonding_debug_root); + bonding_debug_root = NULL; +} + + +#else /* !CONFIG_DEBUG_FS */ + +void bond_debug_register(struct bonding *bond) +{ +} + +void bond_debug_unregister(struct bonding *bond) +{ +} + +void bond_debug_reregister(struct bonding *bond) +{ +} + +void bond_create_debugfs(void) +{ +} + +void bond_destroy_debugfs(void) +{ +} + +#endif /* CONFIG_DEBUG_FS */ |