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authorTaku Izumi <izumi.taku@jp.fujitsu.com>2010-12-12 19:04:43 +0000
committerDavid S. Miller <davem@davemloft.net>2010-12-16 13:16:05 -0800
commitcaafa84251b886feb6cdf23d50e2cc99dcdaaaf3 (patch)
tree13f37d7be313fea5eb2b9d8e0557a5e3ff1107fb /drivers/net/bonding
parent411204a5a1ec1a35363d8ef450c77e2b8235da4d (diff)
bonding: add the debugfs interface to see RLB hash table
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>
Diffstat (limited to 'drivers/net/bonding')
-rw-r--r--drivers/net/bonding/bond_debugfs.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/net/bonding/bond_debugfs.c b/drivers/net/bonding/bond_debugfs.c
index ae1eb2fc3a4..3680aa251de 100644
--- a/drivers/net/bonding/bond_debugfs.c
+++ b/drivers/net/bonding/bond_debugfs.c
@@ -4,6 +4,7 @@
#include <linux/netdevice.h>
#include "bonding.h"
+#include "bond_alb.h"
#ifdef CONFIG_DEBUG_FS
@@ -12,6 +13,52 @@
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)
@@ -25,6 +72,9 @@ void bond_debug_register(struct bonding *bond)
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)