finally move buildroot-ng to trunk

1 files changed, 466 insertions, 0 deletions

diff --git a/package/switch/src/switch-core.c b/package/switch/src/switch-core.c
new file mode 100644
index 0000000..7bf705a
--- /dev/null
+++ b/package/switch/src/switch-core.c
@@ -0,0 +1,466 @@
+/*
+ * switch-core.c
+ *
+ * Copyright (C) 2005 Felix Fietkau <openwrt@nbd.name>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * 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>/
+ *   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>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <asm/uaccess.h>
+#include <linux/proc_fs.h>
+#include <linux/list.h>
+
+#include "switch-core.h"
+
+static int drv_num = 0;
+static struct proc_dir_entry *switch_root;
+switch_driver drivers;
+
+typedef struct {
+	struct list_head list;
+	struct proc_dir_entry *parent;
+	int nr;
+	void *driver;
+	switch_config handler;
+} switch_proc_handler;
+
+typedef struct {
+	struct proc_dir_entry *driver_dir, *port_dir, *vlan_dir;
+	struct proc_dir_entry **ports, **vlans;
+	switch_proc_handler data;
+	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);
+
+static struct file_operations switch_proc_fops = {
+	.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 += handler->handler.read(handler->driver, page + len, handler->nr);
+	}
+	len += 1;
+
+	if (*ppos < len) {
+		len = min_t(int, len - *ppos, count);
+		if (copy_to_user(buf, (page + *ppos), len)) {
+			kfree(page);
+			return -EFAULT;
+		}
+		*ppos += len;
+	} else {
+		len = 0;
+	}
+
+	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;
+
+	if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
+		return -ENOBUFS;
+
+	if (copy_from_user(page, buf, count)) {
+		kfree(page);
+		return -EINVAL;
+	}
+	page[count] = 0;
+	
+	if (dent->data != NULL) {
+		switch_proc_handler *handler = (switch_proc_handler *) dent->data;
+		if (handler->handler.write != NULL) {
+			if ((ret = handler->handler.write(handler->driver, page, handler->nr)) >= 0)
+				ret = count;
+		}
+	}
+
+	kfree(page);
+	return ret;
+}
+
+static int handle_driver_name(void *driver, char *buf, int nr)
+{
+	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++) {
+		add_handler(driver, &(handlers[i]), parent, nr);
+	}
+}		
+
+static void remove_handlers(switch_priv *priv)
+{
+	struct list_head *pos, *q;
+	switch_proc_handler *tmp;
+
+	list_for_each_safe(pos, q, &priv->data.list) {
+		tmp = list_entry(pos, switch_proc_handler, list);
+		list_del(pos);
+		remove_proc_entry(tmp->handler.name, tmp->parent);
+		kfree(tmp);
+	}
+}
+
+
+static void do_unregister(switch_driver *driver)
+{
+	char buf[4];
+	int i;
+	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);
+	}
+	kfree(priv->ports);
+	remove_proc_entry("port", priv->driver_dir);
+
+	for(i = 0; priv->vlans[i] != NULL; i++) {
+		sprintf(buf, "%d", i);
+		remove_proc_entry(buf, priv->vlan_dir);
+	}
+	kfree(priv->vlans);
+	remove_proc_entry("vlan", priv->driver_dir);
+
+	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;
+	int i;
+	char buf[4];
+	
+	if ((priv = kmalloc(sizeof(switch_priv), GFP_KERNEL)) == NULL)
+		return -ENOBUFS;
+	driver->data = (void *) priv;
+
+	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);
+		if (driver->port_handlers != NULL)
+			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);
+		if (driver->vlan_handlers != NULL)
+			add_handlers(driver, driver->vlan_handlers, priv->vlans[i], i);
+	}
+	priv->vlans[i] = NULL;
+	
+
+	return 0;
+}
+
+static inline int isspace(char c) {
+	switch(c) {
+		case ' ':
+		case 0x09:
+		case 0x0a:
+		case 0x0d:
+			return 1;
+		default:
+			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;
+	while (*buf != 0) {
+		*buf = toupper(*buf);
+		buf++;
+	}
+
+	if (strncmp(str, "AUTO", 4) == 0)
+		return SWITCH_MEDIA_AUTO;
+	else if (strncmp(str, "100FD", 5) == 0)
+		return SWITCH_MEDIA_100 | SWITCH_MEDIA_FD;
+	else if (strncmp(str, "100HD", 5) == 0)
+		return SWITCH_MEDIA_100;
+	else if (strncmp(str, "10FD", 4) == 0)
+		return SWITCH_MEDIA_FD;
+	else if (strncmp(str, "10HD", 4) == 0)
+		return 0;
+	else return -1;
+}
+
+int switch_print_media(char *buf, int media)
+{
+	int len = 0;
+
+	if (media & SWITCH_MEDIA_AUTO)
+		len = sprintf(buf, "Auto");
+	else if (media == (SWITCH_MEDIA_100 | SWITCH_MEDIA_FD))
+		len = sprintf(buf, "100FD");
+	else if (media == SWITCH_MEDIA_100)
+		len = sprintf(buf,  "100HD");
+	else if (media == SWITCH_MEDIA_FD)
+		len = sprintf(buf,  "10FD");
+	else if (media == 0)
+		len = sprintf(buf,  "10HD");
+	else
+		len = sprintf(buf, "Invalid");
+
+	return len;
+}
+
+switch_vlan_config *switch_parse_vlan(switch_driver *driver, char *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));
+
+	while (isspace(*buf)) buf++;
+	j = 0;
+	while (*buf >= '0' && *buf <= '9') {
+		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 != 0) return NULL;
+
+	c->port &= (1 << driver->ports) - 1;
+	c->untag &= (1 << driver->ports) - 1;
+	c->pvid &= (1 << driver->ports) - 1;
+	
+	return c;
+}
+
+
+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);
+			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);
+		kfree(new);
+		return ret;
+	}
+	INIT_LIST_HEAD(&new->list);
+	list_add(&new->list, &drivers.list);
+
+	return 0;
+}
+
+void switch_unregister_driver(char *name) {
+	struct list_head *pos, *q;
+	switch_driver *tmp;
+
+	list_for_each_safe(pos, q, &drivers.list) {
+		tmp = list_entry(pos, switch_driver, list);
+		if (strcmp(tmp->name, name) == 0) {
+			do_unregister(tmp);
+			list_del(pos);
+			kfree(tmp->name);
+			kfree(tmp);
+
+			return;
+		}
+	}
+}
+
+static int __init switch_init(void)
+{
+	if ((switch_root = proc_mkdir("switch", NULL)) == NULL) {
+		printk("%s: proc_mkdir failed.\n", __FILE__);
+		return -ENODEV;
+	}
+
+	INIT_LIST_HEAD(&drivers.list);
+	
+	return 0;
+}
+
+static void __exit switch_exit(void)
+{
+	remove_proc_entry("switch", NULL);
+}
+
+MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(switch_register_driver);
+EXPORT_SYMBOL(switch_unregister_driver);
+EXPORT_SYMBOL(switch_parse_vlan);
+EXPORT_SYMBOL(switch_parse_media);
+EXPORT_SYMBOL(switch_print_media);
+
+module_init(switch_init);
+module_exit(switch_exit);