diff options
| author | Taku Izumi <izumi.taku@jp.fujitsu.com> | 2010-12-12 22:04:43 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-17 00:16:05 +0300 |
| commit | caafa84251b886feb6cdf23d50e2cc99dcdaaaf3 (patch) | |
| tree | 13f37d7be313fea5eb2b9d8e0557a5e3ff1107fb /drivers/net/bonding/bond_debugfs.c | |
| parent | 411204a5a1ec1a35363d8ef450c77e2b8235da4d (diff) | |
| download | linux-caafa84251b886feb6cdf23d50e2cc99dcdaaaf3.tar.xz | |
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/bond_debugfs.c')
| -rw-r--r-- | drivers/net/bonding/bond_debugfs.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/net/bonding/bond_debugfs.c b/drivers/net/bonding/bond_debugfs.c index ae1eb2fc3a47..3680aa251dea 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) |