1 files changed, 146 insertions, 0 deletions

diff --git a/drivers/net/bonding/bond_debugfs.c b/drivers/net/bonding/bond_debugfs.c
new file mode 100644
index 000000000000..3680aa251dea
--- /dev/null
+++ b/drivers/net/bonding/bond_debugfs.c
@@ -0,0 +1,146 @@
+#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 */