#include <linux/netdevice.h>
#include <linux/phonet.h>
#include <net/sock.h>
+#include <net/netns/generic.h>
#include <net/phonet/pn_dev.h>
-/* when accessing, remember to lock with spin_lock(&pndevs.lock); */
-struct phonet_device_list pndevs = {
- .list = LIST_HEAD_INIT(pndevs.list),
- .lock = __SPIN_LOCK_UNLOCKED(pndevs.lock),
+struct phonet_net {
+ struct phonet_device_list pndevs;
};
+int phonet_net_id;
+
+struct phonet_device_list *phonet_device_list(struct net *net)
+{
+ struct phonet_net *pnn = net_generic(net, phonet_net_id);
+ return &pnn->pndevs;
+}
+
/* Allocate new Phonet device. */
static struct phonet_device *__phonet_device_alloc(struct net_device *dev)
{
+ struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev));
struct phonet_device *pnd = kmalloc(sizeof(*pnd), GFP_ATOMIC);
if (pnd == NULL)
return NULL;
pnd->netdev = dev;
bitmap_zero(pnd->addrs, 64);
- list_add(&pnd->list, &pndevs.list);
+ list_add(&pnd->list, &pndevs->list);
return pnd;
}
static struct phonet_device *__phonet_get(struct net_device *dev)
{
+ struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev));
struct phonet_device *pnd;
- list_for_each_entry(pnd, &pndevs.list, list) {
+ list_for_each_entry(pnd, &pndevs->list, list) {
if (pnd->netdev == dev)
return pnd;
}
return NULL;
}
-static void __phonet_device_free(struct phonet_device *pnd)
+static void phonet_device_destroy(struct net_device *dev)
{
- list_del(&pnd->list);
- kfree(pnd);
+ struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev));
+ struct phonet_device *pnd;
+
+ ASSERT_RTNL();
+
+ spin_lock_bh(&pndevs->lock);
+ pnd = __phonet_get(dev);
+ if (pnd)
+ list_del(&pnd->list);
+ spin_unlock_bh(&pndevs->lock);
+
+ if (pnd) {
+ u8 addr;
+
+ for (addr = find_first_bit(pnd->addrs, 64); addr < 64;
+ addr = find_next_bit(pnd->addrs, 64, 1+addr))
+ phonet_address_notify(RTM_DELADDR, dev, addr);
+ kfree(pnd);
+ }
}
struct net_device *phonet_device_get(struct net *net)
{
+ struct phonet_device_list *pndevs = phonet_device_list(net);
struct phonet_device *pnd;
struct net_device *dev;
- spin_lock_bh(&pndevs.lock);
- list_for_each_entry(pnd, &pndevs.list, list) {
+ spin_lock_bh(&pndevs->lock);
+ list_for_each_entry(pnd, &pndevs->list, list) {
dev = pnd->netdev;
BUG_ON(!dev);
- if (net_eq(dev_net(dev), net) &&
- (dev->reg_state == NETREG_REGISTERED) &&
+ if ((dev->reg_state == NETREG_REGISTERED) &&
((pnd->netdev->flags & IFF_UP)) == IFF_UP)
break;
dev = NULL;
}
if (dev)
dev_hold(dev);
- spin_unlock_bh(&pndevs.lock);
+ spin_unlock_bh(&pndevs->lock);
return dev;
}
int phonet_address_add(struct net_device *dev, u8 addr)
{
+ struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev));
struct phonet_device *pnd;
int err = 0;
- spin_lock_bh(&pndevs.lock);
+ spin_lock_bh(&pndevs->lock);
/* Find or create Phonet-specific device data */
pnd = __phonet_get(dev);
if (pnd == NULL)
err = -ENOMEM;
else if (test_and_set_bit(addr >> 2, pnd->addrs))
err = -EEXIST;
- spin_unlock_bh(&pndevs.lock);
+ spin_unlock_bh(&pndevs->lock);
return err;
}
int phonet_address_del(struct net_device *dev, u8 addr)
{
+ struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev));
struct phonet_device *pnd;
int err = 0;
- spin_lock_bh(&pndevs.lock);
+ spin_lock_bh(&pndevs->lock);
pnd = __phonet_get(dev);
if (!pnd || !test_and_clear_bit(addr >> 2, pnd->addrs))
err = -EADDRNOTAVAIL;
- else if (bitmap_empty(pnd->addrs, 64))
- __phonet_device_free(pnd);
- spin_unlock_bh(&pndevs.lock);
+ else if (bitmap_empty(pnd->addrs, 64)) {
+ list_del(&pnd->list);
+ kfree(pnd);
+ }
+ spin_unlock_bh(&pndevs->lock);
return err;
}
/* Gets a source address toward a destination, through a interface. */
u8 phonet_address_get(struct net_device *dev, u8 addr)
{
+ struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev));
struct phonet_device *pnd;
- spin_lock_bh(&pndevs.lock);
+ spin_lock_bh(&pndevs->lock);
pnd = __phonet_get(dev);
if (pnd) {
BUG_ON(bitmap_empty(pnd->addrs, 64));
addr = find_first_bit(pnd->addrs, 64) << 2;
} else
addr = PN_NO_ADDR;
- spin_unlock_bh(&pndevs.lock);
+ spin_unlock_bh(&pndevs->lock);
return addr;
}
int phonet_address_lookup(struct net *net, u8 addr)
{
+ struct phonet_device_list *pndevs = phonet_device_list(net);
struct phonet_device *pnd;
+ int err = -EADDRNOTAVAIL;
- spin_lock_bh(&pndevs.lock);
- list_for_each_entry(pnd, &pndevs.list, list) {
- if (!net_eq(dev_net(pnd->netdev), net))
- continue;
+ spin_lock_bh(&pndevs->lock);
+ list_for_each_entry(pnd, &pndevs->list, list) {
/* Don't allow unregistering devices! */
if ((pnd->netdev->reg_state != NETREG_REGISTERED) ||
((pnd->netdev->flags & IFF_UP)) != IFF_UP)
continue;
if (test_bit(addr >> 2, pnd->addrs)) {
- spin_unlock_bh(&pndevs.lock);
- return 0;
+ err = 0;
+ goto found;
}
}
- spin_unlock_bh(&pndevs.lock);
- return -EADDRNOTAVAIL;
+found:
+ spin_unlock_bh(&pndevs->lock);
+ return err;
}
/* notify Phonet of device events */
{
struct net_device *dev = arg;
- if (what == NETDEV_UNREGISTER) {
- struct phonet_device *pnd;
-
- /* Destroy phonet-specific device data */
- spin_lock_bh(&pndevs.lock);
- pnd = __phonet_get(dev);
- if (pnd)
- __phonet_device_free(pnd);
- spin_unlock_bh(&pndevs.lock);
- }
+ if (what == NETDEV_UNREGISTER)
+ phonet_device_destroy(dev);
return 0;
}
.priority = 0,
};
-/* Initialize Phonet devices list */
-void phonet_device_init(void)
+/* Per-namespace Phonet devices handling */
+static int phonet_init_net(struct net *net)
{
- register_netdevice_notifier(&phonet_device_notifier);
+ struct phonet_net *pnn = kmalloc(sizeof(*pnn), GFP_KERNEL);
+ if (!pnn)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&pnn->pndevs.list);
+ spin_lock_init(&pnn->pndevs.lock);
+ net_assign_generic(net, phonet_net_id, pnn);
+ return 0;
}
-void phonet_device_exit(void)
+static void phonet_exit_net(struct net *net)
{
- struct phonet_device *pnd, *n;
+ struct phonet_net *pnn = net_generic(net, phonet_net_id);
+ struct net_device *dev;
- rtnl_unregister_all(PF_PHONET);
rtnl_lock();
- spin_lock_bh(&pndevs.lock);
+ for_each_netdev(net, dev)
+ phonet_device_destroy(dev);
+ rtnl_unlock();
+ kfree(pnn);
+}
- list_for_each_entry_safe(pnd, n, &pndevs.list, list)
- __phonet_device_free(pnd);
+static struct pernet_operations phonet_net_ops = {
+ .init = phonet_init_net,
+ .exit = phonet_exit_net,
+};
- spin_unlock_bh(&pndevs.lock);
- rtnl_unlock();
+/* Initialize Phonet devices list */
+int __init phonet_device_init(void)
+{
+ int err = register_pernet_gen_device(&phonet_net_id, &phonet_net_ops);
+ if (err)
+ return err;
+
+ register_netdevice_notifier(&phonet_device_notifier);
+ err = phonet_netlink_register();
+ if (err)
+ phonet_device_exit();
+ return err;
+}
+
+void phonet_device_exit(void)
+{
+ rtnl_unregister_all(PF_PHONET);
unregister_netdevice_notifier(&phonet_device_notifier);
+ unregister_pernet_gen_device(phonet_net_id, &phonet_net_ops);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff