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https://github.com/edk2-porting/linux-next.git
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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>
147 lines
2.9 KiB
C
147 lines
2.9 KiB
C
#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/netdevice.h>
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#include "bonding.h"
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#include "bond_alb.h"
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#ifdef CONFIG_DEBUG_FS
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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static struct dentry *bonding_debug_root;
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/*
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* Show RLB hash table
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*/
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static int bond_debug_rlb_hash_show(struct seq_file *m, void *v)
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{
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struct bonding *bond = m->private;
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struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
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struct rlb_client_info *client_info;
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u32 hash_index;
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if (bond->params.mode != BOND_MODE_ALB)
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return 0;
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seq_printf(m, "SourceIP DestinationIP "
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"Destination MAC DEV\n");
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spin_lock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
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hash_index = bond_info->rx_hashtbl_head;
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for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) {
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client_info = &(bond_info->rx_hashtbl[hash_index]);
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seq_printf(m, "%-15pI4 %-15pI4 %-17pM %s\n",
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&client_info->ip_src,
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&client_info->ip_dst,
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&client_info->mac_dst,
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client_info->slave->dev->name);
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}
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spin_unlock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
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return 0;
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}
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static int bond_debug_rlb_hash_open(struct inode *inode, struct file *file)
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{
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return single_open(file, bond_debug_rlb_hash_show, inode->i_private);
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}
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static const struct file_operations bond_debug_rlb_hash_fops = {
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.owner = THIS_MODULE,
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.open = bond_debug_rlb_hash_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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void bond_debug_register(struct bonding *bond)
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{
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if (!bonding_debug_root)
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return;
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bond->debug_dir =
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debugfs_create_dir(bond->dev->name, bonding_debug_root);
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if (!bond->debug_dir) {
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pr_warning("%s: Warning: failed to register to debugfs\n",
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bond->dev->name);
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return;
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}
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debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir,
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bond, &bond_debug_rlb_hash_fops);
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}
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void bond_debug_unregister(struct bonding *bond)
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{
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if (!bonding_debug_root)
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return;
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debugfs_remove_recursive(bond->debug_dir);
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}
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void bond_debug_reregister(struct bonding *bond)
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{
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struct dentry *d;
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if (!bonding_debug_root)
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return;
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d = debugfs_rename(bonding_debug_root, bond->debug_dir,
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bonding_debug_root, bond->dev->name);
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if (d) {
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bond->debug_dir = d;
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} else {
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pr_warning("%s: Warning: failed to reregister, "
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"so just unregister old one\n",
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bond->dev->name);
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bond_debug_unregister(bond);
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}
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}
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void bond_create_debugfs(void)
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{
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bonding_debug_root = debugfs_create_dir("bonding", NULL);
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if (!bonding_debug_root) {
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pr_warning("Warning: Cannot create bonding directory"
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" in debugfs\n");
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}
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}
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void bond_destroy_debugfs(void)
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{
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debugfs_remove_recursive(bonding_debug_root);
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bonding_debug_root = NULL;
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}
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#else /* !CONFIG_DEBUG_FS */
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void bond_debug_register(struct bonding *bond)
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{
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}
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void bond_debug_unregister(struct bonding *bond)
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{
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}
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void bond_debug_reregister(struct bonding *bond)
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{
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}
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void bond_create_debugfs(void)
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{
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}
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void bond_destroy_debugfs(void)
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{
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}
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#endif /* CONFIG_DEBUG_FS */
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