diff --git a/inode.c b/inode.c
index 69f99ed..c1897e1 100644
--- a/inode.c
+++ b/inode.c
@@ -70,8 +70,8 @@ extern void netsfs_inc_inode_size(struct inode *inode, loff_t inc)
             inc);
 
     spin_lock(&inode->i_lock);
-        oldsize = i_size_read(inode);
-        newsize = oldsize + inc;
+    oldsize = i_size_read(inode);
+    newsize = oldsize + inc;
     i_size_write(inode, newsize);
     spin_unlock(&inode->i_lock);
 }
@@ -241,9 +241,7 @@ extern int netsfs_create_by_name(const char *name, mode_t mode, struct dentry *p
 
     *dentry = NULL;
 
-    /* TODO: Check the necessity of a lock here.
-     * mutex_lock(&parent->d_inode->i_mutex);
-     */
+    mutex_lock(&parent->d_inode->i_mutex);
     *dentry = lookup_one_len(name, parent, strlen(name));
     if (!IS_ERR(*dentry)) {
         switch (mode & S_IFMT) {
@@ -265,7 +263,7 @@ extern int netsfs_create_by_name(const char *name, mode_t mode, struct dentry *p
     } else
         error = PTR_ERR(*dentry);
 
-    /* mutex_unlock(&parent->d_inode->i_mutex); */
+    mutex_unlock(&parent->d_inode->i_mutex);
     printk("%s:%s:%d - End.\n",
             THIS_MODULE->name,
             __FUNCTION__,
diff --git a/proto.c b/proto.c
index 12810ab..b06feb1 100644
--- a/proto.c
+++ b/proto.c
@@ -22,16 +22,26 @@
 
 struct netsfs_skb_info {
     struct work_struct my_work;
-    int    x;
+    char mac_name[8];
+    char network_name[6];
+    int len;
 };
 
 static void netsfs_go(struct work_struct *work)
 {
     struct netsfs_skb_info *netsfsinfo;
+    struct dentry *mac_dentry, *network_dentry;
 
     netsfsinfo = container_of(work, struct netsfs_skb_info, my_work);
 
-    printk("Worker: netsfsinfo.x = %d\n", netsfsinfo->x);
+    printk("Worker: %s %s %d\n", netsfsinfo->mac_name, netsfsinfo->network_name, netsfsinfo->len);
+
+    netsfs_create_by_name(netsfsinfo->mac_name, S_IFDIR, NULL, &mac_dentry, NULL);
+    if (mac_dentry)
+        netsfs_create_by_name(netsfsinfo->network_name, S_IFDIR, mac_dentry, &network_dentry, NULL);
+
+    netsfs_inc_inode_size(mac_dentry->d_inode, netsfsinfo->len);
+    netsfs_inc_inode_size(network_dentry->d_inode, netsfsinfo->len);
     kfree( (void *) work);
 }
 
@@ -39,17 +49,13 @@ int netsfs_packet_handler(struct sk_buff *skb, struct net_device *dev, struct pa
                           struct net_device *dev2)
 {
     int len, err;
-    struct dentry *de_mac;
-    struct dentry *de_network;
-    struct dentry *de_transport;
-
     struct netsfs_skb_info *netsfsinfo;
-
     char mac_name[8], network_name[6];
 
     len = skb->len;
+
+    /* IEEE 802.3 Ethernet magic. */
     if (len > ETH_DATA_LEN) {
-        printk(KERN_INFO "%s:len > ETH_DATA_LEN!\n", THIS_MODULE->name);
         err = -ENOMEM;
         goto free;
     }
@@ -84,7 +90,9 @@ int netsfs_packet_handler(struct sk_buff *skb, struct net_device *dev, struct pa
         goto free;
     }
 
-    netsfsinfo->x = 10;
+    netsfsinfo->len = len;
+    strncpy(netsfsinfo->mac_name, mac_name, strlen(mac_name));
+    strncpy(netsfsinfo->network_name, network_name, strlen(mac_name));
     INIT_WORK(&netsfsinfo->my_work, netsfs_go);
     schedule_work(&netsfsinfo->my_work);