caafa84251
This patch provices the debugfs interface to see RLB hash table like the following: # cat /sys/kernel/debug/bonding/bond0/rlb_hash_table SourceIP DestinationIP Destination MAC DEV 10.124.196.205 10.124.196.205 ff:ff:ff:ff:ff:ff eth4 10.124.196.205 10.124.196.81 00:19:99:XX:XX:XX eth3 10.124.196.205 10.124.196.1 00:21:d8:XX:XX:XX eth0 This is helpful to check if the receive load balancing works as expected. Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
146 lines
2.9 KiB
C
146 lines
2.9 KiB
C
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/device.h>
|
|
#include <linux/netdevice.h>
|
|
|
|
#include "bonding.h"
|
|
#include "bond_alb.h"
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
|
|
#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->params.mode != BOND_MODE_ALB)
|
|
return 0;
|
|
|
|
seq_printf(m, "SourceIP DestinationIP "
|
|
"Destination MAC DEV\n");
|
|
|
|
spin_lock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
|
|
|
|
hash_index = bond_info->rx_hashtbl_head;
|
|
for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->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_ALB_INFO(bond).rx_hashtbl_lock));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bond_debug_rlb_hash_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, bond_debug_rlb_hash_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations bond_debug_rlb_hash_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = bond_debug_rlb_hash_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
void bond_debug_register(struct bonding *bond)
|
|
{
|
|
if (!bonding_debug_root)
|
|
return;
|
|
|
|
bond->debug_dir =
|
|
debugfs_create_dir(bond->dev->name, bonding_debug_root);
|
|
|
|
if (!bond->debug_dir) {
|
|
pr_warning("%s: Warning: failed to register to debugfs\n",
|
|
bond->dev->name);
|
|
return;
|
|
}
|
|
|
|
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 (d) {
|
|
bond->debug_dir = d;
|
|
} else {
|
|
pr_warning("%s: Warning: failed to reregister, "
|
|
"so just unregister old one\n",
|
|
bond->dev->name);
|
|
bond_debug_unregister(bond);
|
|
}
|
|
}
|
|
|
|
void bond_create_debugfs(void)
|
|
{
|
|
bonding_debug_root = debugfs_create_dir("bonding", NULL);
|
|
|
|
if (!bonding_debug_root) {
|
|
pr_warning("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 */
|