#include <net/arp.h>
#include <linux/rtnetlink.h>
#include <linux/notifier.h>
+#include <net/net_namespace.h>
#include <linux/if_vlan.h>
#include "vlan.h"
static char vlan_buggyright[] = "David S. Miller <davem@redhat.com>";
static int vlan_device_event(struct notifier_block *, unsigned long, void *);
-static int vlan_ioctl_handler(void __user *);
+static int vlan_ioctl_handler(struct net *net, void __user *);
static int unregister_vlan_dev(struct net_device *, unsigned short );
static struct notifier_block vlan_notifier_block = {
/* Register us to receive netdevice events */
err = register_netdevice_notifier(&vlan_notifier_block);
- if (err < 0) {
- dev_remove_pack(&vlan_packet_type);
- vlan_proc_cleanup();
- return err;
- }
+ if (err < 0)
+ goto err1;
- vlan_ioctl_set(vlan_ioctl_handler);
+ err = vlan_netlink_init();
+ if (err < 0)
+ goto err2;
+ vlan_ioctl_set(vlan_ioctl_handler);
return 0;
-}
-/* Cleanup all vlan devices
- * Note: devices that have been registered that but not
- * brought up will exist but have no module ref count.
- */
-static void __exit vlan_cleanup_devices(void)
-{
- struct net_device *dev, *nxt;
-
- rtnl_lock();
- for_each_netdev_safe(dev, nxt) {
- if (dev->priv_flags & IFF_802_1Q_VLAN) {
- unregister_vlan_dev(VLAN_DEV_INFO(dev)->real_dev,
- VLAN_DEV_INFO(dev)->vlan_id);
-
- unregister_netdevice(dev);
- }
- }
- rtnl_unlock();
+err2:
+ unregister_netdevice_notifier(&vlan_notifier_block);
+err1:
+ vlan_proc_cleanup();
+ dev_remove_pack(&vlan_packet_type);
+ return err;
}
/*
{
int i;
+ vlan_netlink_fini();
vlan_ioctl_set(NULL);
/* Un-register us from receiving netdevice events */
unregister_netdevice_notifier(&vlan_notifier_block);
dev_remove_pack(&vlan_packet_type);
- vlan_cleanup_devices();
/* This table must be empty if there are no module
* references left.
kfree(grp);
}
+static struct vlan_group *vlan_group_alloc(int ifindex)
+{
+ struct vlan_group *grp;
+ unsigned int size;
+ unsigned int i;
+
+ grp = kzalloc(sizeof(struct vlan_group), GFP_KERNEL);
+ if (!grp)
+ return NULL;
+
+ size = sizeof(struct net_device *) * VLAN_GROUP_ARRAY_PART_LEN;
+
+ for (i = 0; i < VLAN_GROUP_ARRAY_SPLIT_PARTS; i++) {
+ grp->vlan_devices_arrays[i] = kzalloc(size, GFP_KERNEL);
+ if (!grp->vlan_devices_arrays[i])
+ goto err;
+ }
+
+ grp->real_dev_ifindex = ifindex;
+ hlist_add_head_rcu(&grp->hlist,
+ &vlan_group_hash[vlan_grp_hashfn(ifindex)]);
+ return grp;
+
+err:
+ vlan_group_free(grp);
+ return NULL;
+}
+
static void vlan_rcu_free(struct rcu_head *rcu)
{
vlan_group_free(container_of(rcu, struct vlan_group, rcu));
return ret;
}
-static int unregister_vlan_device(struct net_device *dev)
+int unregister_vlan_device(struct net_device *dev)
{
int ret;
return ret;
}
-static void vlan_setup(struct net_device *new_dev)
+/*
+ * vlan network devices have devices nesting below it, and are a special
+ * "super class" of normal network devices; split their locks off into a
+ * separate class since they always nest.
+ */
+static struct lock_class_key vlan_netdev_xmit_lock_key;
+
+static int vlan_dev_init(struct net_device *dev)
+{
+ struct net_device *real_dev = VLAN_DEV_INFO(dev)->real_dev;
+
+ /* IFF_BROADCAST|IFF_MULTICAST; ??? */
+ dev->flags = real_dev->flags & ~IFF_UP;
+ dev->iflink = real_dev->ifindex;
+ dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
+ (1<<__LINK_STATE_DORMANT))) |
+ (1<<__LINK_STATE_PRESENT);
+
+ if (is_zero_ether_addr(dev->dev_addr))
+ memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len);
+ if (is_zero_ether_addr(dev->broadcast))
+ memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
+
+ if (real_dev->features & NETIF_F_HW_VLAN_TX) {
+ dev->hard_header = real_dev->hard_header;
+ dev->hard_header_len = real_dev->hard_header_len;
+ dev->hard_start_xmit = vlan_dev_hwaccel_hard_start_xmit;
+ dev->rebuild_header = real_dev->rebuild_header;
+ } else {
+ dev->hard_header = vlan_dev_hard_header;
+ dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
+ dev->hard_start_xmit = vlan_dev_hard_start_xmit;
+ dev->rebuild_header = vlan_dev_rebuild_header;
+ }
+ dev->hard_header_parse = real_dev->hard_header_parse;
+ dev->hard_header_cache = NULL;
+
+ lockdep_set_class(&dev->_xmit_lock, &vlan_netdev_xmit_lock_key);
+ return 0;
+}
+
+void vlan_setup(struct net_device *new_dev)
{
SET_MODULE_OWNER(new_dev);
+ ether_setup(new_dev);
+
/* new_dev->ifindex = 0; it will be set when added to
* the global list.
* iflink is set as well.
/* set up method calls */
new_dev->change_mtu = vlan_dev_change_mtu;
+ new_dev->init = vlan_dev_init;
new_dev->open = vlan_dev_open;
new_dev->stop = vlan_dev_stop;
- new_dev->set_mac_address = vlan_dev_set_mac_address;
new_dev->set_multicast_list = vlan_dev_set_multicast_list;
+ new_dev->change_rx_flags = vlan_change_rx_flags;
new_dev->destructor = free_netdev;
new_dev->do_ioctl = vlan_dev_ioctl;
+
+ memset(new_dev->broadcast, 0, ETH_ALEN);
}
static void vlan_transfer_operstate(const struct net_device *dev, struct net_device *vlandev)
}
}
-/*
- * vlan network devices have devices nesting below it, and are a special
- * "super class" of normal network devices; split their locks off into a
- * separate class since they always nest.
- */
-static struct lock_class_key vlan_netdev_xmit_lock_key;
-
-
-/* Attach a VLAN device to a mac address (ie Ethernet Card).
- * Returns the device that was created, or NULL if there was
- * an error of some kind.
- */
-static struct net_device *register_vlan_device(struct net_device *real_dev,
- unsigned short VLAN_ID)
+int vlan_check_real_dev(struct net_device *real_dev, unsigned short vlan_id)
{
- struct vlan_group *grp;
- struct net_device *new_dev;
- char name[IFNAMSIZ];
- int i;
-
-#ifdef VLAN_DEBUG
- printk(VLAN_DBG "%s: if_name -:%s:- vid: %i\n",
- __FUNCTION__, eth_IF_name, VLAN_ID);
-#endif
-
- if (VLAN_ID >= VLAN_VID_MASK)
- goto out_ret_null;
-
if (real_dev->features & NETIF_F_VLAN_CHALLENGED) {
printk(VLAN_DBG "%s: VLANs not supported on %s.\n",
__FUNCTION__, real_dev->name);
- goto out_ret_null;
+ return -EOPNOTSUPP;
}
if ((real_dev->features & NETIF_F_HW_VLAN_RX) &&
!real_dev->vlan_rx_register) {
printk(VLAN_DBG "%s: Device %s has buggy VLAN hw accel.\n",
__FUNCTION__, real_dev->name);
- goto out_ret_null;
+ return -EOPNOTSUPP;
}
if ((real_dev->features & NETIF_F_HW_VLAN_FILTER) &&
(!real_dev->vlan_rx_add_vid || !real_dev->vlan_rx_kill_vid)) {
printk(VLAN_DBG "%s: Device %s has buggy VLAN hw accel.\n",
__FUNCTION__, real_dev->name);
- goto out_ret_null;
+ return -EOPNOTSUPP;
}
/* The real device must be up and operating in order to
* assosciate a VLAN device with it.
*/
if (!(real_dev->flags & IFF_UP))
- goto out_ret_null;
+ return -ENETDOWN;
- if (__find_vlan_dev(real_dev, VLAN_ID) != NULL) {
+ if (__find_vlan_dev(real_dev, vlan_id) != NULL) {
/* was already registered. */
printk(VLAN_DBG "%s: ALREADY had VLAN registered\n", __FUNCTION__);
- goto out_ret_null;
+ return -EEXIST;
}
+ return 0;
+}
+
+int register_vlan_dev(struct net_device *dev)
+{
+ struct vlan_dev_info *vlan = VLAN_DEV_INFO(dev);
+ struct net_device *real_dev = vlan->real_dev;
+ unsigned short vlan_id = vlan->vlan_id;
+ struct vlan_group *grp, *ngrp = NULL;
+ int err;
+
+ grp = __vlan_find_group(real_dev->ifindex);
+ if (!grp) {
+ ngrp = grp = vlan_group_alloc(real_dev->ifindex);
+ if (!grp)
+ return -ENOBUFS;
+ }
+
+ err = register_netdevice(dev);
+ if (err < 0)
+ goto out_free_group;
+
+ /* Account for reference in struct vlan_dev_info */
+ dev_hold(real_dev);
+
+ vlan_transfer_operstate(real_dev, dev);
+ linkwatch_fire_event(dev); /* _MUST_ call rfc2863_policy() */
+
+ /* So, got the sucker initialized, now lets place
+ * it into our local structure.
+ */
+ vlan_group_set_device(grp, vlan_id, dev);
+ if (ngrp && real_dev->features & NETIF_F_HW_VLAN_RX)
+ real_dev->vlan_rx_register(real_dev, ngrp);
+ if (real_dev->features & NETIF_F_HW_VLAN_FILTER)
+ real_dev->vlan_rx_add_vid(real_dev, vlan_id);
+
+ if (vlan_proc_add_dev(dev) < 0)
+ printk(KERN_WARNING "VLAN: failed to add proc entry for %s\n",
+ dev->name);
+ return 0;
+
+out_free_group:
+ if (ngrp)
+ vlan_group_free(ngrp);
+ return err;
+}
+
+/* Attach a VLAN device to a mac address (ie Ethernet Card).
+ * Returns 0 if the device was created or a negative error code otherwise.
+ */
+static int register_vlan_device(struct net_device *real_dev,
+ unsigned short VLAN_ID)
+{
+ struct net_device *new_dev;
+ char name[IFNAMSIZ];
+ int err;
+
+#ifdef VLAN_DEBUG
+ printk(VLAN_DBG "%s: if_name -:%s:- vid: %i\n",
+ __FUNCTION__, eth_IF_name, VLAN_ID);
+#endif
+
+ if (VLAN_ID >= VLAN_VID_MASK)
+ return -ERANGE;
+
+ err = vlan_check_real_dev(real_dev, VLAN_ID);
+ if (err < 0)
+ return err;
+
/* Gotta set up the fields for the device. */
#ifdef VLAN_DEBUG
printk(VLAN_DBG "About to allocate name, vlan_name_type: %i\n",
vlan_setup);
if (new_dev == NULL)
- goto out_ret_null;
-
-#ifdef VLAN_DEBUG
- printk(VLAN_DBG "Allocated new name -:%s:-\n", new_dev->name);
-#endif
- /* IFF_BROADCAST|IFF_MULTICAST; ??? */
- new_dev->flags = real_dev->flags;
- new_dev->flags &= ~IFF_UP;
-
- new_dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
- (1<<__LINK_STATE_DORMANT))) |
- (1<<__LINK_STATE_PRESENT);
+ return -ENOBUFS;
/* need 4 bytes for extra VLAN header info,
* hope the underlying device can handle it.
*/
new_dev->mtu = real_dev->mtu;
- /* TODO: maybe just assign it to be ETHERNET? */
- new_dev->type = real_dev->type;
-
- new_dev->hard_header_len = real_dev->hard_header_len;
- if (!(real_dev->features & NETIF_F_HW_VLAN_TX)) {
- /* Regular ethernet + 4 bytes (18 total). */
- new_dev->hard_header_len += VLAN_HLEN;
- }
-
+#ifdef VLAN_DEBUG
+ printk(VLAN_DBG "Allocated new name -:%s:-\n", new_dev->name);
VLAN_MEM_DBG("new_dev->priv malloc, addr: %p size: %i\n",
new_dev->priv,
sizeof(struct vlan_dev_info));
-
- memcpy(new_dev->broadcast, real_dev->broadcast, real_dev->addr_len);
- memcpy(new_dev->dev_addr, real_dev->dev_addr, real_dev->addr_len);
- new_dev->addr_len = real_dev->addr_len;
-
- if (real_dev->features & NETIF_F_HW_VLAN_TX) {
- new_dev->hard_header = real_dev->hard_header;
- new_dev->hard_start_xmit = vlan_dev_hwaccel_hard_start_xmit;
- new_dev->rebuild_header = real_dev->rebuild_header;
- } else {
- new_dev->hard_header = vlan_dev_hard_header;
- new_dev->hard_start_xmit = vlan_dev_hard_start_xmit;
- new_dev->rebuild_header = vlan_dev_rebuild_header;
- }
- new_dev->hard_header_parse = real_dev->hard_header_parse;
+#endif
VLAN_DEV_INFO(new_dev)->vlan_id = VLAN_ID; /* 1 through VLAN_VID_MASK */
VLAN_DEV_INFO(new_dev)->real_dev = real_dev;
VLAN_DEV_INFO(new_dev)->dent = NULL;
- VLAN_DEV_INFO(new_dev)->flags = 1;
+ VLAN_DEV_INFO(new_dev)->flags = VLAN_FLAG_REORDER_HDR;
-#ifdef VLAN_DEBUG
- printk(VLAN_DBG "About to go find the group for idx: %i\n",
- real_dev->ifindex);
-#endif
-
- if (register_netdevice(new_dev))
+ new_dev->rtnl_link_ops = &vlan_link_ops;
+ err = register_vlan_dev(new_dev);
+ if (err < 0)
goto out_free_newdev;
- lockdep_set_class(&new_dev->_xmit_lock, &vlan_netdev_xmit_lock_key);
-
- new_dev->iflink = real_dev->ifindex;
- vlan_transfer_operstate(real_dev, new_dev);
- linkwatch_fire_event(new_dev); /* _MUST_ call rfc2863_policy() */
-
- /* So, got the sucker initialized, now lets place
- * it into our local structure.
- */
- grp = __vlan_find_group(real_dev->ifindex);
-
- /* Note, we are running under the RTNL semaphore
- * so it cannot "appear" on us.
- */
- if (!grp) { /* need to add a new group */
- grp = kzalloc(sizeof(struct vlan_group), GFP_KERNEL);
- if (!grp)
- goto out_free_unregister;
-
- for (i=0; i < VLAN_GROUP_ARRAY_SPLIT_PARTS; i++) {
- grp->vlan_devices_arrays[i] = kzalloc(
- sizeof(struct net_device *)*VLAN_GROUP_ARRAY_PART_LEN,
- GFP_KERNEL);
-
- if (!grp->vlan_devices_arrays[i])
- goto out_free_arrays;
- }
-
- /* printk(KERN_ALERT "VLAN REGISTER: Allocated new group.\n"); */
- grp->real_dev_ifindex = real_dev->ifindex;
-
- hlist_add_head_rcu(&grp->hlist,
- &vlan_group_hash[vlan_grp_hashfn(real_dev->ifindex)]);
-
- if (real_dev->features & NETIF_F_HW_VLAN_RX)
- real_dev->vlan_rx_register(real_dev, grp);
- }
-
- vlan_group_set_device(grp, VLAN_ID, new_dev);
-
- if (vlan_proc_add_dev(new_dev)<0)/* create it's proc entry */
- printk(KERN_WARNING "VLAN: failed to add proc entry for %s\n",
- new_dev->name);
-
- if (real_dev->features & NETIF_F_HW_VLAN_FILTER)
- real_dev->vlan_rx_add_vid(real_dev, VLAN_ID);
-
- /* Account for reference in struct vlan_dev_info */
- dev_hold(real_dev);
#ifdef VLAN_DEBUG
printk(VLAN_DBG "Allocated new device successfully, returning.\n");
#endif
- return new_dev;
-
-out_free_arrays:
- vlan_group_free(grp);
-
-out_free_unregister:
- unregister_netdev(new_dev);
- goto out_ret_null;
+ return 0;
out_free_newdev:
free_netdev(new_dev);
+ return err;
+}
-out_ret_null:
- return NULL;
+static void vlan_sync_address(struct net_device *dev,
+ struct net_device *vlandev)
+{
+ struct vlan_dev_info *vlan = VLAN_DEV_INFO(vlandev);
+
+ /* May be called without an actual change */
+ if (!compare_ether_addr(vlan->real_dev_addr, dev->dev_addr))
+ return;
+
+ /* vlan address was different from the old address and is equal to
+ * the new address */
+ if (compare_ether_addr(vlandev->dev_addr, vlan->real_dev_addr) &&
+ !compare_ether_addr(vlandev->dev_addr, dev->dev_addr))
+ dev_unicast_delete(dev, vlandev->dev_addr, ETH_ALEN);
+
+ /* vlan address was equal to the old address and is different from
+ * the new address */
+ if (!compare_ether_addr(vlandev->dev_addr, vlan->real_dev_addr) &&
+ compare_ether_addr(vlandev->dev_addr, dev->dev_addr))
+ dev_unicast_add(dev, vlandev->dev_addr, ETH_ALEN);
+
+ memcpy(vlan->real_dev_addr, dev->dev_addr, ETH_ALEN);
}
static int vlan_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
int i, flgs;
struct net_device *vlandev;
+ if (dev->nd_net != &init_net)
+ return NOTIFY_DONE;
+
if (!grp)
goto out;
}
break;
+ case NETDEV_CHANGEADDR:
+ /* Adjust unicast filters on underlying device */
+ for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ vlandev = vlan_group_get_device(grp, i);
+ if (!vlandev)
+ continue;
+
+ vlan_sync_address(dev, vlandev);
+ }
+ break;
+
case NETDEV_DOWN:
/* Put all VLANs for this dev in the down state too. */
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
* o execute requested action or pass command to the device driver
* arg is really a struct vlan_ioctl_args __user *.
*/
-static int vlan_ioctl_handler(void __user *arg)
+static int vlan_ioctl_handler(struct net *net, void __user *arg)
{
int err;
unsigned short vid = 0;
case GET_VLAN_REALDEV_NAME_CMD:
case GET_VLAN_VID_CMD:
err = -ENODEV;
- dev = __dev_get_by_name(args.device1);
+ dev = __dev_get_by_name(&init_net, args.device1);
if (!dev)
goto out;
err = -EPERM;
if (!capable(CAP_NET_ADMIN))
break;
- if (register_vlan_device(dev, args.u.VID)) {
- err = 0;
- } else {
- err = -EINVAL;
- }
+ err = register_vlan_device(dev, args.u.VID);
break;
case DEL_VLAN_CMD:
err = -EINVAL;
break;
case GET_VLAN_REALDEV_NAME_CMD:
+ err = 0;
vlan_dev_get_realdev_name(dev, args.u.device2);
if (copy_to_user(arg, &args,
sizeof(struct vlan_ioctl_args))) {
break;
case GET_VLAN_VID_CMD:
+ err = 0;
vlan_dev_get_vid(dev, &vid);
args.u.VID = vid;
if (copy_to_user(arg, &args,
projects / linux-2.6-omap-h63xx.git / blobdiff