/*
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/*
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* Ioctl handler
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* Ioctl handler
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* Linux ethernet bridge
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* Linux ethernet bridge
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*
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*
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* Authors:
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* Authors:
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* Lennert Buytenhek <buytenh@gnu.org>
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* Lennert Buytenhek <buytenh@gnu.org>
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*
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*
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* $Id: br_ioctl.c,v 1.1.1.1 2004-04-15 01:16:26 phoenix Exp $
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* $Id: br_ioctl.c,v 1.1.1.1 2004-04-15 01:16:26 phoenix Exp $
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*
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*
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* This program is free software; you can redistribute it and/or
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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* 2 of the License, or (at your option) any later version.
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*/
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*/
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/if_bridge.h>
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#include <linux/if_bridge.h>
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#include <linux/inetdevice.h>
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#include <linux/inetdevice.h>
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#include <asm/uaccess.h>
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#include <asm/uaccess.h>
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#include "br_private.h"
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#include "br_private.h"
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static int br_ioctl_device(struct net_bridge *br,
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static int br_ioctl_device(struct net_bridge *br,
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unsigned int cmd,
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unsigned int cmd,
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unsigned long arg0,
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unsigned long arg0,
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unsigned long arg1,
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unsigned long arg1,
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unsigned long arg2)
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unsigned long arg2)
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{
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{
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if (br == NULL)
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if (br == NULL)
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return -EINVAL;
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return -EINVAL;
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switch (cmd)
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switch (cmd)
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{
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{
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case BRCTL_ADD_IF:
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case BRCTL_ADD_IF:
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case BRCTL_DEL_IF:
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case BRCTL_DEL_IF:
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{
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{
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struct net_device *dev;
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struct net_device *dev;
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int ret;
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int ret;
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dev = dev_get_by_index(arg0);
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dev = dev_get_by_index(arg0);
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if (dev == NULL)
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if (dev == NULL)
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return -EINVAL;
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return -EINVAL;
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if (cmd == BRCTL_ADD_IF)
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if (cmd == BRCTL_ADD_IF)
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ret = br_add_if(br, dev);
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ret = br_add_if(br, dev);
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else
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else
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ret = br_del_if(br, dev);
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ret = br_del_if(br, dev);
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dev_put(dev);
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dev_put(dev);
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return ret;
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return ret;
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}
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}
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case BRCTL_GET_BRIDGE_INFO:
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case BRCTL_GET_BRIDGE_INFO:
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{
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{
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struct __bridge_info b;
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struct __bridge_info b;
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memset(&b, 0, sizeof(struct __bridge_info));
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memset(&b, 0, sizeof(struct __bridge_info));
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memcpy(&b.designated_root, &br->designated_root, 8);
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memcpy(&b.designated_root, &br->designated_root, 8);
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memcpy(&b.bridge_id, &br->bridge_id, 8);
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memcpy(&b.bridge_id, &br->bridge_id, 8);
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b.root_path_cost = br->root_path_cost;
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b.root_path_cost = br->root_path_cost;
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b.max_age = br->max_age;
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b.max_age = br->max_age;
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b.hello_time = br->hello_time;
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b.hello_time = br->hello_time;
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b.forward_delay = br->forward_delay;
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b.forward_delay = br->forward_delay;
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b.bridge_max_age = br->bridge_max_age;
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b.bridge_max_age = br->bridge_max_age;
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b.bridge_hello_time = br->bridge_hello_time;
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b.bridge_hello_time = br->bridge_hello_time;
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b.bridge_forward_delay = br->bridge_forward_delay;
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b.bridge_forward_delay = br->bridge_forward_delay;
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b.topology_change = br->topology_change;
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b.topology_change = br->topology_change;
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b.topology_change_detected = br->topology_change_detected;
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b.topology_change_detected = br->topology_change_detected;
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b.root_port = br->root_port;
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b.root_port = br->root_port;
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b.stp_enabled = br->stp_enabled;
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b.stp_enabled = br->stp_enabled;
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b.ageing_time = br->ageing_time;
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b.ageing_time = br->ageing_time;
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b.gc_interval = br->gc_interval;
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b.gc_interval = br->gc_interval;
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b.hello_timer_value = br_timer_get_residue(&br->hello_timer);
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b.hello_timer_value = br_timer_get_residue(&br->hello_timer);
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b.tcn_timer_value = br_timer_get_residue(&br->tcn_timer);
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b.tcn_timer_value = br_timer_get_residue(&br->tcn_timer);
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b.topology_change_timer_value = br_timer_get_residue(&br->topology_change_timer);
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b.topology_change_timer_value = br_timer_get_residue(&br->topology_change_timer);
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b.gc_timer_value = br_timer_get_residue(&br->gc_timer);
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b.gc_timer_value = br_timer_get_residue(&br->gc_timer);
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if (copy_to_user((void *)arg0, &b, sizeof(b)))
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if (copy_to_user((void *)arg0, &b, sizeof(b)))
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return -EFAULT;
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return -EFAULT;
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return 0;
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return 0;
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}
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}
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case BRCTL_GET_PORT_LIST:
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case BRCTL_GET_PORT_LIST:
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{
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{
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int i;
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int i;
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int indices[256];
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int indices[256];
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for (i=0;i<256;i++)
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for (i=0;i<256;i++)
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indices[i] = 0;
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indices[i] = 0;
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br_get_port_ifindices(br, indices);
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br_get_port_ifindices(br, indices);
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if (copy_to_user((void *)arg0, indices, 256*sizeof(int)))
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if (copy_to_user((void *)arg0, indices, 256*sizeof(int)))
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return -EFAULT;
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return -EFAULT;
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return 0;
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return 0;
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}
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}
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case BRCTL_SET_BRIDGE_FORWARD_DELAY:
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case BRCTL_SET_BRIDGE_FORWARD_DELAY:
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br->bridge_forward_delay = arg0;
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br->bridge_forward_delay = arg0;
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if (br_is_root_bridge(br))
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if (br_is_root_bridge(br))
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br->forward_delay = arg0;
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br->forward_delay = arg0;
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return 0;
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return 0;
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case BRCTL_SET_BRIDGE_HELLO_TIME:
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case BRCTL_SET_BRIDGE_HELLO_TIME:
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br->bridge_hello_time = arg0;
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br->bridge_hello_time = arg0;
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if (br_is_root_bridge(br))
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if (br_is_root_bridge(br))
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br->hello_time = arg0;
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br->hello_time = arg0;
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return 0;
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return 0;
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case BRCTL_SET_BRIDGE_MAX_AGE:
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case BRCTL_SET_BRIDGE_MAX_AGE:
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br->bridge_max_age = arg0;
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br->bridge_max_age = arg0;
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if (br_is_root_bridge(br))
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if (br_is_root_bridge(br))
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br->max_age = arg0;
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br->max_age = arg0;
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return 0;
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return 0;
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case BRCTL_SET_AGEING_TIME:
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case BRCTL_SET_AGEING_TIME:
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br->ageing_time = arg0;
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br->ageing_time = arg0;
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return 0;
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return 0;
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case BRCTL_SET_GC_INTERVAL:
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case BRCTL_SET_GC_INTERVAL:
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br->gc_interval = arg0;
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br->gc_interval = arg0;
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return 0;
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return 0;
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case BRCTL_GET_PORT_INFO:
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case BRCTL_GET_PORT_INFO:
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{
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{
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struct __port_info p;
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struct __port_info p;
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struct net_bridge_port *pt;
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struct net_bridge_port *pt;
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if ((pt = br_get_port(br, arg1)) == NULL)
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if ((pt = br_get_port(br, arg1)) == NULL)
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return -EINVAL;
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return -EINVAL;
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memset(&p, 0, sizeof(struct __port_info));
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memset(&p, 0, sizeof(struct __port_info));
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memcpy(&p.designated_root, &pt->designated_root, 8);
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memcpy(&p.designated_root, &pt->designated_root, 8);
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memcpy(&p.designated_bridge, &pt->designated_bridge, 8);
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memcpy(&p.designated_bridge, &pt->designated_bridge, 8);
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p.port_id = pt->port_id;
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p.port_id = pt->port_id;
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p.designated_port = pt->designated_port;
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p.designated_port = pt->designated_port;
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p.path_cost = pt->path_cost;
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p.path_cost = pt->path_cost;
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p.designated_cost = pt->designated_cost;
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p.designated_cost = pt->designated_cost;
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p.state = pt->state;
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p.state = pt->state;
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p.top_change_ack = pt->topology_change_ack;
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p.top_change_ack = pt->topology_change_ack;
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p.config_pending = pt->config_pending;
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p.config_pending = pt->config_pending;
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p.message_age_timer_value = br_timer_get_residue(&pt->message_age_timer);
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p.message_age_timer_value = br_timer_get_residue(&pt->message_age_timer);
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p.forward_delay_timer_value = br_timer_get_residue(&pt->forward_delay_timer);
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p.forward_delay_timer_value = br_timer_get_residue(&pt->forward_delay_timer);
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p.hold_timer_value = br_timer_get_residue(&pt->hold_timer);
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p.hold_timer_value = br_timer_get_residue(&pt->hold_timer);
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if (copy_to_user((void *)arg0, &p, sizeof(p)))
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if (copy_to_user((void *)arg0, &p, sizeof(p)))
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return -EFAULT;
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return -EFAULT;
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return 0;
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return 0;
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}
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}
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case BRCTL_SET_BRIDGE_STP_STATE:
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case BRCTL_SET_BRIDGE_STP_STATE:
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br->stp_enabled = arg0?1:0;
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br->stp_enabled = arg0?1:0;
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return 0;
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return 0;
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case BRCTL_SET_BRIDGE_PRIORITY:
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case BRCTL_SET_BRIDGE_PRIORITY:
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br_stp_set_bridge_priority(br, arg0);
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br_stp_set_bridge_priority(br, arg0);
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return 0;
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return 0;
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case BRCTL_SET_PORT_PRIORITY:
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case BRCTL_SET_PORT_PRIORITY:
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{
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{
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struct net_bridge_port *p;
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struct net_bridge_port *p;
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if ((p = br_get_port(br, arg0)) == NULL)
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if ((p = br_get_port(br, arg0)) == NULL)
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return -EINVAL;
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return -EINVAL;
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br_stp_set_port_priority(p, arg1);
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br_stp_set_port_priority(p, arg1);
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return 0;
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return 0;
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}
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}
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case BRCTL_SET_PATH_COST:
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case BRCTL_SET_PATH_COST:
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{
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{
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struct net_bridge_port *p;
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struct net_bridge_port *p;
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if ((p = br_get_port(br, arg0)) == NULL)
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if ((p = br_get_port(br, arg0)) == NULL)
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return -EINVAL;
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return -EINVAL;
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br_stp_set_path_cost(p, arg1);
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br_stp_set_path_cost(p, arg1);
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return 0;
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return 0;
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}
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}
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case BRCTL_GET_FDB_ENTRIES:
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case BRCTL_GET_FDB_ENTRIES:
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return br_fdb_get_entries(br, (void *)arg0, arg1, arg2);
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return br_fdb_get_entries(br, (void *)arg0, arg1, arg2);
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}
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}
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return -EOPNOTSUPP;
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return -EOPNOTSUPP;
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}
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}
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static int br_ioctl_deviceless(unsigned int cmd,
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static int br_ioctl_deviceless(unsigned int cmd,
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unsigned long arg0,
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unsigned long arg0,
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unsigned long arg1)
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unsigned long arg1)
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{
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{
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switch (cmd)
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switch (cmd)
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{
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{
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case BRCTL_GET_VERSION:
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case BRCTL_GET_VERSION:
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return BRCTL_VERSION;
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return BRCTL_VERSION;
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case BRCTL_GET_BRIDGES:
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case BRCTL_GET_BRIDGES:
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{
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{
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int i;
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int i;
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int indices[64];
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int indices[64];
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for (i=0;i<64;i++)
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for (i=0;i<64;i++)
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indices[i] = 0;
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indices[i] = 0;
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if (arg1 > 64)
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if (arg1 > 64)
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arg1 = 64;
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arg1 = 64;
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arg1 = br_get_bridge_ifindices(indices, arg1);
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arg1 = br_get_bridge_ifindices(indices, arg1);
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if (copy_to_user((void *)arg0, indices, arg1*sizeof(int)))
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if (copy_to_user((void *)arg0, indices, arg1*sizeof(int)))
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return -EFAULT;
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return -EFAULT;
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return arg1;
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return arg1;
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}
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}
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case BRCTL_ADD_BRIDGE:
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case BRCTL_ADD_BRIDGE:
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case BRCTL_DEL_BRIDGE:
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case BRCTL_DEL_BRIDGE:
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{
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{
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char buf[IFNAMSIZ];
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char buf[IFNAMSIZ];
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if (copy_from_user(buf, (void *)arg0, IFNAMSIZ))
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if (copy_from_user(buf, (void *)arg0, IFNAMSIZ))
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return -EFAULT;
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return -EFAULT;
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buf[IFNAMSIZ-1] = 0;
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buf[IFNAMSIZ-1] = 0;
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if (cmd == BRCTL_ADD_BRIDGE)
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if (cmd == BRCTL_ADD_BRIDGE)
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return br_add_bridge(buf);
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return br_add_bridge(buf);
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return br_del_bridge(buf);
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return br_del_bridge(buf);
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}
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}
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}
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}
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return -EOPNOTSUPP;
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return -EOPNOTSUPP;
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}
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}
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static DECLARE_MUTEX(ioctl_mutex);
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static DECLARE_MUTEX(ioctl_mutex);
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int br_ioctl_deviceless_stub(unsigned long arg)
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int br_ioctl_deviceless_stub(unsigned long arg)
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{
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{
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int err;
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int err;
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unsigned long i[3];
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unsigned long i[3];
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if (!capable(CAP_NET_ADMIN))
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if (!capable(CAP_NET_ADMIN))
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return -EPERM;
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return -EPERM;
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if (copy_from_user(i, (void *)arg, 3*sizeof(unsigned long)))
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if (copy_from_user(i, (void *)arg, 3*sizeof(unsigned long)))
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return -EFAULT;
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return -EFAULT;
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down(&ioctl_mutex);
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down(&ioctl_mutex);
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err = br_ioctl_deviceless(i[0], i[1], i[2]);
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err = br_ioctl_deviceless(i[0], i[1], i[2]);
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up(&ioctl_mutex);
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up(&ioctl_mutex);
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return err;
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return err;
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}
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}
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int br_ioctl(struct net_bridge *br, unsigned int cmd, unsigned long arg0, unsigned long arg1, unsigned long arg2)
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int br_ioctl(struct net_bridge *br, unsigned int cmd, unsigned long arg0, unsigned long arg1, unsigned long arg2)
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{
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{
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int err;
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int err;
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|
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if (!capable(CAP_NET_ADMIN))
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if (!capable(CAP_NET_ADMIN))
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return -EPERM;
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return -EPERM;
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down(&ioctl_mutex);
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down(&ioctl_mutex);
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err = br_ioctl_deviceless(cmd, arg0, arg1);
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err = br_ioctl_deviceless(cmd, arg0, arg1);
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if (err == -EOPNOTSUPP)
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if (err == -EOPNOTSUPP)
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err = br_ioctl_device(br, cmd, arg0, arg1, arg2);
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err = br_ioctl_device(br, cmd, arg0, arg1, arg2);
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up(&ioctl_mutex);
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up(&ioctl_mutex);
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return err;
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return err;
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}
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}
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void br_call_ioctl_atomic(void (*fn)(void))
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void br_call_ioctl_atomic(void (*fn)(void))
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{
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{
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down(&ioctl_mutex);
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down(&ioctl_mutex);
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fn();
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fn();
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up(&ioctl_mutex);
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up(&ioctl_mutex);
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}
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}
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