[ar71xx] fix dir-825-b1 default network config after r21905
[openwrt.git] / package / switch / src / switch-core.c
index e0aa541..e4a3b10 100644 (file)
@@ -17,7 +17,6 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  *
- * $Id: $
  *
  * Basic doc of driver's /proc interface:
  * /proc/switch/<interface>/
@@ -32,7 +31,6 @@
  *     ports: same syntax as for nvram's vlan*ports (eg. "1 2 3 4 5*")
  */
 
-#include <linux/autoconf.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <asm/uaccess.h>
@@ -70,12 +68,7 @@ static struct file_operations switch_proc_fops = {
 
 static ssize_t switch_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
 {
-#ifdef LINUX_2_4
-       struct inode *inode = file->f_dentry->d_inode;
-       struct proc_dir_entry *dent = inode->u.generic_ip;
-#else
        struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
-#endif
        char *page;
        int len = 0;
        
@@ -107,12 +100,7 @@ static ssize_t switch_proc_read(struct file *file, char *buf, size_t count, loff
 
 static ssize_t switch_proc_write(struct file *file, const char *buf, size_t count, void *data)
 {
-#ifdef LINUX_2_4
-       struct inode *inode = file->f_dentry->d_inode;
-       struct proc_dir_entry *dent = inode->u.generic_ip;
-#else
        struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
-#endif
        char *page;
        int ret = -EINVAL;
 
@@ -158,6 +146,8 @@ static void add_handler(switch_driver *driver, const switch_config *handler, str
 
        switch_proc_handler *tmp;
        tmp = (switch_proc_handler *) kmalloc(sizeof(switch_proc_handler), GFP_KERNEL);
+       if (!tmp)
+               return;
        INIT_LIST_HEAD(&tmp->list);
        tmp->parent = parent;
        tmp->nr = nr;
@@ -239,11 +229,26 @@ static int do_register(switch_driver *driver)
        switch_priv *priv;
        int i;
        char buf[4];
-       
-       if ((priv = kmalloc(sizeof(switch_priv), GFP_KERNEL)) == NULL)
-               return -ENOBUFS;
+
+       priv = kmalloc(sizeof(switch_priv), GFP_KERNEL);
+       if (!priv)
+               return -ENOMEM;
        driver->data = (void *) priv;
 
+       priv->ports = kmalloc((driver->ports + 1) * sizeof(struct proc_dir_entry *),
+                             GFP_KERNEL);
+       if (!priv->ports) {
+               kfree(priv);
+               return -ENOMEM;
+       }
+       priv->vlans = kmalloc((driver->vlans + 1) * sizeof(struct proc_dir_entry *),
+                             GFP_KERNEL);
+       if (!priv->vlans) {
+               kfree(priv->ports);
+               kfree(priv);
+               return -ENOMEM;
+       }
+
        INIT_LIST_HEAD(&priv->data.list);
        
        priv->nr = drv_num++;
@@ -254,7 +259,6 @@ static int do_register(switch_driver *driver)
        }
        
        priv->port_dir = proc_mkdir("port", priv->driver_dir);
-       priv->ports = kmalloc((driver->ports + 1) * sizeof(struct proc_dir_entry *), GFP_KERNEL);
        for (i = 0; i < driver->ports; i++) {
                sprintf(buf, "%d", i);
                priv->ports[i] = proc_mkdir(buf, priv->port_dir);
@@ -264,7 +268,6 @@ static int do_register(switch_driver *driver)
        priv->ports[i] = NULL;
        
        priv->vlan_dir = proc_mkdir("vlan", priv->driver_dir);
-       priv->vlans = kmalloc((driver->vlans + 1) * sizeof(struct proc_dir_entry *), GFP_KERNEL);
        for (i = 0; i < driver->vlans; i++) {
                sprintf(buf, "%d", i);
                priv->vlans[i] = proc_mkdir(buf, priv->vlan_dir);
@@ -339,6 +342,8 @@ switch_vlan_config *switch_parse_vlan(switch_driver *driver, char *buf)
        int j, u, p, s;
        
        c = kmalloc(sizeof(switch_vlan_config), GFP_KERNEL);
+       if (!c)
+               return NULL;
        memset(c, 0, sizeof(switch_vlan_config));
 
        while (isspace(*buf)) buf++;
@@ -387,12 +392,27 @@ switch_vlan_config *switch_parse_vlan(switch_driver *driver, char *buf)
 }
 
 
+int switch_device_registered (char* device) {
+       struct list_head *pos;
+       switch_driver *new;
+
+       list_for_each(pos, &drivers.list) {
+               if (strcmp(list_entry(pos, switch_driver, list)->interface, device) == 0) {
+                       printk("There is already a switch registered on the device '%s'\n", device);
+                       return -EINVAL;
+               }
+       }
+
+       return 0;
+}
+
+
 int switch_register_driver(switch_driver *driver)
 {
        struct list_head *pos;
        switch_driver *new;
        int ret;
-       
+
        list_for_each(pos, &drivers.list) {
                if (strcmp(list_entry(pos, switch_driver, list)->name, driver->name) == 0) {
                        printk("Switch driver '%s' already exists in the kernel\n", driver->name);
@@ -405,6 +425,8 @@ int switch_register_driver(switch_driver *driver)
        }
 
        new = kmalloc(sizeof(switch_driver), GFP_KERNEL);
+       if (!new)
+               return -ENOMEM;
        memcpy(new, driver, sizeof(switch_driver));
        new->name = strdup(driver->name);
        new->interface = strdup(driver->interface);
@@ -457,6 +479,7 @@ static void __exit switch_exit(void)
 MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
 MODULE_LICENSE("GPL");
 
+EXPORT_SYMBOL(switch_device_registered);
 EXPORT_SYMBOL(switch_register_driver);
 EXPORT_SYMBOL(switch_unregister_driver);
 EXPORT_SYMBOL(switch_parse_vlan);
This page took 0.033241 seconds and 4 git commands to generate.