Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/net/bridge/br_ioctl.c b/net/bridge/br_ioctl.c
new file mode 100644
index 0000000..b8ce14b
--- /dev/null
+++ b/net/bridge/br_ioctl.c
@@ -0,0 +1,410 @@
+/*
+ * Ioctl handler
+ * Linux ethernet bridge
+ *
+ * Authors:
+ * Lennert Buytenhek <buytenh@gnu.org>
+ *
+ * $Id: br_ioctl.c,v 1.4 2000/11/08 05:16:40 davem Exp $
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/if_bridge.h>
+#include <linux/netdevice.h>
+#include <linux/times.h>
+#include <asm/uaccess.h>
+#include "br_private.h"
+
+/* called with RTNL */
+static int get_bridge_ifindices(int *indices, int num)
+{
+ struct net_device *dev;
+ int i = 0;
+
+ for (dev = dev_base; dev && i < num; dev = dev->next) {
+ if (dev->priv_flags & IFF_EBRIDGE)
+ indices[i++] = dev->ifindex;
+ }
+
+ return i;
+}
+
+/* called with RTNL */
+static void get_port_ifindices(struct net_bridge *br, int *ifindices, int num)
+{
+ struct net_bridge_port *p;
+
+ list_for_each_entry(p, &br->port_list, list) {
+ if (p->port_no < num)
+ ifindices[p->port_no] = p->dev->ifindex;
+ }
+}
+
+/*
+ * Format up to a page worth of forwarding table entries
+ * userbuf -- where to copy result
+ * maxnum -- maximum number of entries desired
+ * (limited to a page for sanity)
+ * offset -- number of records to skip
+ */
+static int get_fdb_entries(struct net_bridge *br, void __user *userbuf,
+ unsigned long maxnum, unsigned long offset)
+{
+ int num;
+ void *buf;
+ size_t size = maxnum * sizeof(struct __fdb_entry);
+
+ if (size > PAGE_SIZE) {
+ size = PAGE_SIZE;
+ maxnum = PAGE_SIZE/sizeof(struct __fdb_entry);
+ }
+
+ buf = kmalloc(size, GFP_USER);
+ if (!buf)
+ return -ENOMEM;
+
+ num = br_fdb_fillbuf(br, buf, maxnum, offset);
+ if (num > 0) {
+ if (copy_to_user(userbuf, buf, num*sizeof(struct __fdb_entry)))
+ num = -EFAULT;
+ }
+ kfree(buf);
+
+ return num;
+}
+
+static int add_del_if(struct net_bridge *br, int ifindex, int isadd)
+{
+ struct net_device *dev;
+ int ret;
+
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ dev = dev_get_by_index(ifindex);
+ if (dev == NULL)
+ return -EINVAL;
+
+ if (isadd)
+ ret = br_add_if(br, dev);
+ else
+ ret = br_del_if(br, dev);
+
+ dev_put(dev);
+ return ret;
+}
+
+/*
+ * Legacy ioctl's through SIOCDEVPRIVATE
+ * This interface is deprecated because it was too difficult to
+ * to do the translation for 32/64bit ioctl compatability.
+ */
+static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct net_bridge *br = netdev_priv(dev);
+ unsigned long args[4];
+
+ if (copy_from_user(args, rq->ifr_data, sizeof(args)))
+ return -EFAULT;
+
+ switch (args[0]) {
+ case BRCTL_ADD_IF:
+ case BRCTL_DEL_IF:
+ return add_del_if(br, args[1], args[0] == BRCTL_ADD_IF);
+
+ case BRCTL_GET_BRIDGE_INFO:
+ {
+ struct __bridge_info b;
+
+ memset(&b, 0, sizeof(struct __bridge_info));
+ rcu_read_lock();
+ memcpy(&b.designated_root, &br->designated_root, 8);
+ memcpy(&b.bridge_id, &br->bridge_id, 8);
+ b.root_path_cost = br->root_path_cost;
+ b.max_age = jiffies_to_clock_t(br->max_age);
+ b.hello_time = jiffies_to_clock_t(br->hello_time);
+ b.forward_delay = br->forward_delay;
+ b.bridge_max_age = br->bridge_max_age;
+ b.bridge_hello_time = br->bridge_hello_time;
+ b.bridge_forward_delay = jiffies_to_clock_t(br->bridge_forward_delay);
+ b.topology_change = br->topology_change;
+ b.topology_change_detected = br->topology_change_detected;
+ b.root_port = br->root_port;
+ b.stp_enabled = br->stp_enabled;
+ b.ageing_time = jiffies_to_clock_t(br->ageing_time);
+ b.hello_timer_value = br_timer_value(&br->hello_timer);
+ b.tcn_timer_value = br_timer_value(&br->tcn_timer);
+ b.topology_change_timer_value = br_timer_value(&br->topology_change_timer);
+ b.gc_timer_value = br_timer_value(&br->gc_timer);
+ rcu_read_unlock();
+
+ if (copy_to_user((void __user *)args[1], &b, sizeof(b)))
+ return -EFAULT;
+
+ return 0;
+ }
+
+ case BRCTL_GET_PORT_LIST:
+ {
+ int num, *indices;
+
+ num = args[2];
+ if (num < 0)
+ return -EINVAL;
+ if (num == 0)
+ num = 256;
+ if (num > BR_MAX_PORTS)
+ num = BR_MAX_PORTS;
+
+ indices = kmalloc(num*sizeof(int), GFP_KERNEL);
+ if (indices == NULL)
+ return -ENOMEM;
+
+ memset(indices, 0, num*sizeof(int));
+
+ get_port_ifindices(br, indices, num);
+ if (copy_to_user((void __user *)args[1], indices, num*sizeof(int)))
+ num = -EFAULT;
+ kfree(indices);
+ return num;
+ }
+
+ case BRCTL_SET_BRIDGE_FORWARD_DELAY:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ spin_lock_bh(&br->lock);
+ br->bridge_forward_delay = clock_t_to_jiffies(args[1]);
+ if (br_is_root_bridge(br))
+ br->forward_delay = br->bridge_forward_delay;
+ spin_unlock_bh(&br->lock);
+ return 0;
+
+ case BRCTL_SET_BRIDGE_HELLO_TIME:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ spin_lock_bh(&br->lock);
+ br->bridge_hello_time = clock_t_to_jiffies(args[1]);
+ if (br_is_root_bridge(br))
+ br->hello_time = br->bridge_hello_time;
+ spin_unlock_bh(&br->lock);
+ return 0;
+
+ case BRCTL_SET_BRIDGE_MAX_AGE:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ spin_lock_bh(&br->lock);
+ br->bridge_max_age = clock_t_to_jiffies(args[1]);
+ if (br_is_root_bridge(br))
+ br->max_age = br->bridge_max_age;
+ spin_unlock_bh(&br->lock);
+ return 0;
+
+ case BRCTL_SET_AGEING_TIME:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ br->ageing_time = clock_t_to_jiffies(args[1]);
+ return 0;
+
+ case BRCTL_GET_PORT_INFO:
+ {
+ struct __port_info p;
+ struct net_bridge_port *pt;
+
+ rcu_read_lock();
+ if ((pt = br_get_port(br, args[2])) == NULL) {
+ rcu_read_unlock();
+ return -EINVAL;
+ }
+
+ memset(&p, 0, sizeof(struct __port_info));
+ memcpy(&p.designated_root, &pt->designated_root, 8);
+ memcpy(&p.designated_bridge, &pt->designated_bridge, 8);
+ p.port_id = pt->port_id;
+ p.designated_port = pt->designated_port;
+ p.path_cost = pt->path_cost;
+ p.designated_cost = pt->designated_cost;
+ p.state = pt->state;
+ p.top_change_ack = pt->topology_change_ack;
+ p.config_pending = pt->config_pending;
+ p.message_age_timer_value = br_timer_value(&pt->message_age_timer);
+ p.forward_delay_timer_value = br_timer_value(&pt->forward_delay_timer);
+ p.hold_timer_value = br_timer_value(&pt->hold_timer);
+
+ rcu_read_unlock();
+
+ if (copy_to_user((void __user *)args[1], &p, sizeof(p)))
+ return -EFAULT;
+
+ return 0;
+ }
+
+ case BRCTL_SET_BRIDGE_STP_STATE:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ br->stp_enabled = args[1]?1:0;
+ return 0;
+
+ case BRCTL_SET_BRIDGE_PRIORITY:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ spin_lock_bh(&br->lock);
+ br_stp_set_bridge_priority(br, args[1]);
+ spin_unlock_bh(&br->lock);
+ return 0;
+
+ case BRCTL_SET_PORT_PRIORITY:
+ {
+ struct net_bridge_port *p;
+ int ret = 0;
+
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (args[2] >= (1<<(16-BR_PORT_BITS)))
+ return -ERANGE;
+
+ spin_lock_bh(&br->lock);
+ if ((p = br_get_port(br, args[1])) == NULL)
+ ret = -EINVAL;
+ else
+ br_stp_set_port_priority(p, args[2]);
+ spin_unlock_bh(&br->lock);
+ return ret;
+ }
+
+ case BRCTL_SET_PATH_COST:
+ {
+ struct net_bridge_port *p;
+ int ret = 0;
+
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ spin_lock_bh(&br->lock);
+ if ((p = br_get_port(br, args[1])) == NULL)
+ ret = -EINVAL;
+ else
+ br_stp_set_path_cost(p, args[2]);
+ spin_unlock_bh(&br->lock);
+ return ret;
+ }
+
+ case BRCTL_GET_FDB_ENTRIES:
+ return get_fdb_entries(br, (void __user *)args[1],
+ args[2], args[3]);
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static int old_deviceless(void __user *uarg)
+{
+ unsigned long args[3];
+
+ if (copy_from_user(args, uarg, sizeof(args)))
+ return -EFAULT;
+
+ switch (args[0]) {
+ case BRCTL_GET_VERSION:
+ return BRCTL_VERSION;
+
+ case BRCTL_GET_BRIDGES:
+ {
+ int *indices;
+ int ret = 0;
+
+ if (args[2] >= 2048)
+ return -ENOMEM;
+ indices = kmalloc(args[2]*sizeof(int), GFP_KERNEL);
+ if (indices == NULL)
+ return -ENOMEM;
+
+ memset(indices, 0, args[2]*sizeof(int));
+ args[2] = get_bridge_ifindices(indices, args[2]);
+
+ ret = copy_to_user((void __user *)args[1], indices, args[2]*sizeof(int))
+ ? -EFAULT : args[2];
+
+ kfree(indices);
+ return ret;
+ }
+
+ case BRCTL_ADD_BRIDGE:
+ case BRCTL_DEL_BRIDGE:
+ {
+ char buf[IFNAMSIZ];
+
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (copy_from_user(buf, (void __user *)args[1], IFNAMSIZ))
+ return -EFAULT;
+
+ buf[IFNAMSIZ-1] = 0;
+
+ if (args[0] == BRCTL_ADD_BRIDGE)
+ return br_add_bridge(buf);
+
+ return br_del_bridge(buf);
+ }
+ }
+
+ return -EOPNOTSUPP;
+}
+
+int br_ioctl_deviceless_stub(unsigned int cmd, void __user *uarg)
+{
+ switch (cmd) {
+ case SIOCGIFBR:
+ case SIOCSIFBR:
+ return old_deviceless(uarg);
+
+ case SIOCBRADDBR:
+ case SIOCBRDELBR:
+ {
+ char buf[IFNAMSIZ];
+
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (copy_from_user(buf, uarg, IFNAMSIZ))
+ return -EFAULT;
+
+ buf[IFNAMSIZ-1] = 0;
+ if (cmd == SIOCBRADDBR)
+ return br_add_bridge(buf);
+
+ return br_del_bridge(buf);
+ }
+ }
+ return -EOPNOTSUPP;
+}
+
+int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct net_bridge *br = netdev_priv(dev);
+
+ switch(cmd) {
+ case SIOCDEVPRIVATE:
+ return old_dev_ioctl(dev, rq, cmd);
+
+ case SIOCBRADDIF:
+ case SIOCBRDELIF:
+ return add_del_if(br, rq->ifr_ifindex, cmd == SIOCBRADDIF);
+
+ }
+
+ pr_debug("Bridge does not support ioctl 0x%x\n", cmd);
+ return -EOPNOTSUPP;
+}