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Date: Tue, 30 Nov 2010 19:01:41 +0900
From: Taku Izumi <izumi.taku@...fujitsu.com>
To: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
Jay Vosburgh <fubar@...ibm.com>
Subject: [PATCH] bonding: add the sysfs interface to see RLB hash table
This patch provides the sysfs interface to see RLB hash table
like the following:
# cat /sys/class/net/bond0/bonding/rlb_hash_table
SourceIP DestinationIP Destination MAC DEV
10.124.196.205 10.124.196. 81 00:19:99:XX:XX:XX eth3
10.124.196.205 10.124.196.222 00:0a:79:XX:XX:XX eth0
10.124.196.205 10.124.196. 75 00:15:17:XX:XX:XX eth4
10.124.196.205 10.124.196. 1 00:21:d8:XX:XX:XX eth3
10.124.196.205 10.124.196.205 ff:ff:ff:ff:ff:ff eth0
This is helpful to check if the receive load balancing works as expected.
Signed-off-by: Taku Izumi <izumi.taku@...fujitsu.com>
---
drivers/net/bonding/bond_sysfs.c | 56 +++++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)
Index: net-next/drivers/net/bonding/bond_sysfs.c
===================================================================
--- net-next.orig/drivers/net/bonding/bond_sysfs.c
+++ net-next/drivers/net/bonding/bond_sysfs.c
@@ -43,6 +43,7 @@
#include <linux/nsproxy.h>
#include "bonding.h"
+#include "bond_alb.h"
#define to_dev(obj) container_of(obj, struct device, kobj)
#define to_bond(cd) ((struct bonding *)(netdev_priv(to_net_dev(cd))))
@@ -1643,6 +1644,60 @@ out:
static DEVICE_ATTR(resend_igmp, S_IRUGO | S_IWUSR,
bonding_show_resend_igmp, bonding_store_resend_igmp);
+/*
+ * Show RLB hash table
+ */
+#define RLB_NULL_INDEX 0xffffffff
+static ssize_t bonding_show_rlb_hashtable(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int count = 0;
+ struct bonding *bond = to_bond(d);
+ 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 count;
+
+ count += sprintf(buf + count, "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]);
+
+ count += sprintf(buf + count,
+ "%3d.%3d.%3d.%3d %3d.%3d.%3d.%3d "
+ "%02x:%02x:%02x:%02x:%02x:%02x %s\n",
+ client_info->ip_src & 0xff,
+ (client_info->ip_src >> 8) & 0xff,
+ (client_info->ip_src >> 16) & 0xff,
+ (client_info->ip_src >> 24) & 0xff,
+ client_info->ip_dst & 0xff,
+ (client_info->ip_dst >> 8) & 0xff,
+ (client_info->ip_dst >> 16) & 0xff,
+ (client_info->ip_dst >> 24) & 0xff,
+ client_info->mac_dst[0],
+ client_info->mac_dst[1],
+ client_info->mac_dst[2],
+ client_info->mac_dst[3],
+ client_info->mac_dst[4],
+ client_info->mac_dst[5],
+ client_info->slave->dev->name);
+ }
+
+ spin_unlock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
+
+ return count;
+
+}
+static DEVICE_ATTR(rlb_hash_table, S_IRUGO, bonding_show_rlb_hashtable, NULL);
+
+
static struct attribute *per_bond_attrs[] = {
&dev_attr_slaves.attr,
&dev_attr_mode.attr,
@@ -1671,6 +1726,7 @@ static struct attribute *per_bond_attrs[
&dev_attr_queue_id.attr,
&dev_attr_all_slaves_active.attr,
&dev_attr_resend_igmp.attr,
+ &dev_attr_rlb_hash_table.attr,
NULL,
};
--
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