* 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>/
* ports: same syntax as for nvram's vlan*ports (eg. "1 2 3 4 5*")
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <asm/uaccess.h>
static ssize_t switch_proc_write(struct file *file, const char *buf, size_t count, void *data);
static struct file_operations switch_proc_fops = {
- read: switch_proc_read,
- write: switch_proc_write
+ .read = (ssize_t (*) (struct file *, char __user *, size_t, loff_t *))switch_proc_read,
+ .write = (ssize_t (*) (struct file *, const char __user *, size_t, loff_t *))switch_proc_write
};
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;
-
+
if ((page = kmalloc(SWITCH_MAX_BUFSZ, GFP_KERNEL)) == NULL)
return -ENOBUFS;
-
+
if (dent->data != NULL) {
switch_proc_handler *handler = (switch_proc_handler *) dent->data;
if (handler->handler.read != NULL)
len = 0;
}
+ kfree(page);
return len;
}
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;
return -EINVAL;
}
page[count] = 0;
-
+
if (dent->data != NULL) {
switch_proc_handler *handler = (switch_proc_handler *) dent->data;
if (handler->handler.write != NULL) {
static int handle_driver_name(void *driver, char *buf, int nr)
{
- char *name = ((switch_driver *) driver)->name;
+ const char *name = ((switch_driver *) driver)->name;
return sprintf(buf, "%s\n", name);
}
static int handle_driver_version(void *driver, char *buf, int nr)
{
- char *version = ((switch_driver *) driver)->version;
+ const char *version = ((switch_driver *) driver)->version;
strcpy(buf, version);
return sprintf(buf, "%s\n", version);
}
-static void add_handler(switch_driver *driver, switch_config *handler, struct proc_dir_entry *parent, int nr)
+static void add_handler(switch_driver *driver, const switch_config *handler, struct proc_dir_entry *parent, int nr)
{
switch_priv *priv = (switch_priv *) driver->data;
struct proc_dir_entry *p;
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;
tmp->driver = driver;
memcpy(&tmp->handler, handler, sizeof(switch_config));
list_add(&tmp->list, &priv->data.list);
-
+
mode = 0;
if (handler->read != NULL) mode |= S_IRUSR;
if (handler->write != NULL) mode |= S_IWUSR;
-
+
if ((p = create_proc_entry(handler->name, mode, parent)) != NULL) {
p->data = (void *) tmp;
p->proc_fops = &switch_proc_fops;
}
}
-static inline void add_handlers(switch_driver *driver, switch_config *handlers, struct proc_dir_entry *parent, int nr)
+static inline void add_handlers(switch_driver *driver, const switch_config *handlers, struct proc_dir_entry *parent, int nr)
{
int i;
-
+
for (i = 0; handlers[i].name != NULL; i++) {
add_handler(driver, &(handlers[i]), parent, nr);
}
-}
+}
static void remove_handlers(switch_priv *priv)
{
switch_priv *priv = (switch_priv *) driver->data;
remove_handlers(priv);
-
+
for(i = 0; priv->ports[i] != NULL; i++) {
sprintf(buf, "%d", i);
remove_proc_entry(buf, priv->port_dir);
remove_proc_entry("vlan", priv->driver_dir);
remove_proc_entry(driver->interface, switch_root);
-
+
if (priv->nr == (drv_num - 1))
drv_num--;
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++;
priv->driver_dir = proc_mkdir(driver->interface, switch_root);
if (driver->driver_handlers != NULL) {
add_handlers(driver, driver->driver_handlers, priv->driver_dir, 0);
add_handlers(driver, global_driver_handlers, priv->driver_dir, 0);
}
-
+
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);
add_handlers(driver, driver->port_handlers, priv->ports[i], i);
}
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);
add_handlers(driver, driver->vlan_handlers, priv->vlans[i], i);
}
priv->vlans[i] = NULL;
-
+
return 0;
}
#define toupper(c) (islower(c) ? ((c) ^ 0x20) : (c))
#define islower(c) (((unsigned char)((c) - 'a')) < 26)
-
+
int switch_parse_media(char *buf)
{
char *str = buf;
{
switch_vlan_config *c;
int j, u, p, s;
-
- c = kmalloc(sizeof(switch_vlan_config), GFP_KERNEL);
- memset(c, 0, sizeof(switch_vlan_config));
+
+ c = kzalloc(sizeof(switch_vlan_config), GFP_KERNEL);
+ if (!c)
+ return NULL;
while (isspace(*buf)) buf++;
j = 0;
u = ((j == driver->cpuport) ? 0 : 1);
p = 0;
s = !(*buf >= '0' && *buf <= '9');
-
+
if (s) {
while (s && !isspace(*buf) && (*buf != 0)) {
switch(*buf) {
j = 0;
}
-
+
while (isspace(*buf)) buf++;
}
- if (*buf != 0) return NULL;
+ if (*buf != 0) {
+ kfree(c);
+ return NULL;
+ }
c->port &= (1 << driver->ports) - 1;
c->untag &= (1 << driver->ports) - 1;
c->pvid &= (1 << driver->ports) - 1;
-
+
return c;
}
+int switch_device_registered (char* device) {
+ struct list_head *pos;
+
+ 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);
}
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);
-
+
if ((ret = do_register(new)) < 0) {
kfree(new->name);
kfree(new);
}
}
-static int __init switch_init()
+static int __init switch_init(void)
{
if ((switch_root = proc_mkdir("switch", NULL)) == NULL) {
printk("%s: proc_mkdir failed.\n", __FILE__);
}
INIT_LIST_HEAD(&drivers.list);
-
+
return 0;
}
-static void __exit switch_exit()
+static void __exit switch_exit(void)
{
remove_proc_entry("switch", NULL);
}
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);
projects / openwrt.git / blobdiff