* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Id: $
+ *
+ * Basic doc of driver's /proc interface:
+ * /proc/switch/<interface>/
+ * registers: read-only
+ * counters: read-only
+ * reset: write causes hardware reset
+ * enable_vlan: "0", "1"
+ * port/<port-number>/
+ * enabled: "0", "1"
+ * media: "AUTO", "100FD", "100HD", "10FD", "10HD"
+ * vlan/<port-number>/
+ * ports: same syntax as for nvram's vlan*ports (eg. "1 2 3 4 5*")
*/
#include <linux/config.h>
struct list_head list;
struct proc_dir_entry *parent;
int nr;
+ void *driver;
switch_config handler;
} switch_proc_handler;
int nr;
} switch_priv;
-
static ssize_t switch_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos);
static ssize_t switch_proc_write(struct file *file, const char *buf, size_t count, void *data);
write: switch_proc_write
};
-static char *strdup(char *str)
-{
- char *new = kmalloc(strlen(str) + 1, GFP_KERNEL);
- strcpy(new, str);
- return new;
-}
-
static ssize_t switch_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
{
#ifdef LINUX_2_4
if (dent->data != NULL) {
switch_proc_handler *handler = (switch_proc_handler *) dent->data;
if (handler->handler.read != NULL)
- len += handler->handler.read(page + len, handler->nr);
+ len += handler->handler.read(handler->driver, page + len, handler->nr);
}
len += 1;
if (dent->data != NULL) {
switch_proc_handler *handler = (switch_proc_handler *) dent->data;
if (handler->handler.write != NULL) {
- if ((ret = handler->handler.write(page, handler->nr)) >= 0)
+ if ((ret = handler->handler.write(handler->driver, page, handler->nr)) >= 0)
ret = count;
}
}
return ret;
}
-static void add_handlers(switch_priv *priv, switch_config *handlers, struct proc_dir_entry *parent, int nr)
+static int handle_driver_name(void *driver, char *buf, int nr)
{
- switch_proc_handler *tmp;
- int i, mode;
+ 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;
+ 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)
+{
+ switch_priv *priv = (switch_priv *) driver->data;
struct proc_dir_entry *p;
+ int mode;
+
+ switch_proc_handler *tmp;
+ tmp = (switch_proc_handler *) kmalloc(sizeof(switch_proc_handler), GFP_KERNEL);
+ 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)
+{
+ int i;
for (i = 0; handlers[i].name != NULL; i++) {
- tmp = kmalloc(sizeof(switch_proc_handler), GFP_KERNEL);
- INIT_LIST_HEAD(&tmp->list);
- tmp->parent = parent;
- tmp->nr = nr;
- memcpy(&tmp->handler, &(handlers[i]), sizeof(switch_config));
- list_add(&tmp->list, &priv->data.list);
-
- mode = 0;
- if (handlers[i].read != NULL) mode |= S_IRUSR;
- if (handlers[i].write != NULL) mode |= S_IWUSR;
-
- if ((p = create_proc_entry(handlers[i].name, mode, parent)) != NULL) {
- p->data = (void *) tmp;
- p->proc_fops = &switch_proc_fops;
- }
+ add_handler(driver, &(handlers[i]), parent, nr);
}
}
kfree(priv->vlans);
remove_proc_entry("vlan", priv->driver_dir);
- remove_proc_entry(driver->name, switch_root);
+ remove_proc_entry(driver->interface, switch_root);
if (priv->nr == (drv_num - 1))
drv_num--;
kfree(priv);
}
+switch_config global_driver_handlers[] = {
+ {"driver", handle_driver_name, NULL},
+ {"version", handle_driver_version, NULL},
+ {NULL, NULL, NULL}
+};
+
static int do_register(switch_driver *driver)
{
switch_priv *priv;
INIT_LIST_HEAD(&priv->data.list);
priv->nr = drv_num++;
- sprintf(buf, "%d", priv->nr);
- priv->driver_dir = proc_mkdir(buf, switch_root);
- if (driver->driver_handlers != NULL)
- add_handlers(priv, driver->driver_handlers, priv->driver_dir, 0);
+ 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);
sprintf(buf, "%d", i);
priv->ports[i] = proc_mkdir(buf, priv->port_dir);
if (driver->port_handlers != NULL)
- add_handlers(priv, driver->port_handlers, priv->ports[i], i);
+ add_handlers(driver, driver->port_handlers, priv->ports[i], i);
}
priv->ports[i] = NULL;
sprintf(buf, "%d", i);
priv->vlans[i] = proc_mkdir(buf, priv->vlan_dir);
if (driver->vlan_handlers != NULL)
- add_handlers(priv, driver->vlan_handlers, priv->vlans[i], i);
+ add_handlers(driver, driver->vlan_handlers, priv->vlans[i], i);
}
priv->vlans[i] = NULL;
return 0;
}
-static int isspace(char c) {
+static inline int isspace(char c) {
switch(c) {
case ' ':
case 0x09:
return len;
}
-int switch_parse_vlan(char *buf)
+switch_vlan_config *switch_parse_vlan(switch_driver *driver, char *buf)
{
- char vlan = 0, tag = 0, pvid_port = 0;
- int untag, j;
+ switch_vlan_config *c;
+ int j, u, p, s;
+
+ c = kmalloc(sizeof(switch_vlan_config), GFP_KERNEL);
+ memset(c, 0, sizeof(switch_vlan_config));
while (isspace(*buf)) buf++;
-
+ j = 0;
while (*buf >= '0' && *buf <= '9') {
- j = *buf++ - '0';
- vlan |= 1 << j;
-
- untag = 0;
- /* untag if needed, CPU port requires special handling */
- if (*buf == 'u' || (j != 5 && (isspace(*buf) || *buf == 0))) {
- untag = 1;
- if (*buf) buf++;
- } else if (*buf == '*') {
- pvid_port |= (1 << j);
- buf++;
- } else if (*buf == 't' || isspace(*buf)) {
- buf++;
- } else break;
-
- if (!untag)
- tag |= 1 << j;
+ j *= 10;
+ j += *buf++ - '0';
+
+ u = ((j == driver->cpuport) ? 0 : 1);
+ p = 0;
+ s = !(*buf >= '0' && *buf <= '9');
+
+ if (s) {
+ while (s && !isspace(*buf) && (*buf != 0)) {
+ switch(*buf) {
+ case 'u':
+ u = 1;
+ break;
+ case 't':
+ u = 0;
+ break;
+ case '*':
+ p = 1;
+ break;
+ }
+ buf++;
+ }
+ c->port |= (1 << j);
+ if (u)
+ c->untag |= (1 << j);
+ if (p)
+ c->pvid |= (1 << j);
+
+ j = 0;
+ }
while (isspace(*buf)) buf++;
}
-
- if (*buf)
- return -1;
+ if (*buf != 0) return NULL;
- return (pvid_port << 16) | (tag << 8) | vlan;
+ c->port &= (1 << driver->ports) - 1;
+ c->untag &= (1 << driver->ports) - 1;
+ c->pvid &= (1 << driver->ports) - 1;
+
+ return c;
}
printk("Switch driver '%s' already exists in the kernel\n", driver->name);
return -EINVAL;
}
+ if (strcmp(list_entry(pos, switch_driver, list)->interface, driver->interface) == 0) {
+ printk("There is already a switch registered on the device '%s'\n", driver->interface);
+ return -EINVAL;
+ }
}
new = kmalloc(sizeof(switch_driver), GFP_KERNEL);
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);
static void __exit switch_exit()
{
- remove_proc_entry("vlan", NULL);
+ remove_proc_entry("switch", NULL);
}
MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
projects / openwrt.git / blobdiff