[NET]: Make the device list and device lookups per namespace.
This patch makes most of the generic device layer network
namespace safe. This patch makes dev_base_head a
network namespace variable, and then it picks up
a few associated variables. The functions:
dev_getbyhwaddr
dev_getfirsthwbytype
dev_get_by_flags
dev_get_by_name
__dev_get_by_name
dev_get_by_index
__dev_get_by_index
dev_ioctl
dev_ethtool
dev_load
wireless_process_ioctl
were modified to take a network namespace argument, and
deal with it.
vlan_ioctl_set and brioctl_set were modified so their
hooks will receive a network namespace argument.
So basically anthing in the core of the network stack that was
affected to by the change of dev_base was modified to handle
multiple network namespaces. The rest of the network stack was
simply modified to explicitly use &init_net the initial network
namespace. This can be fixed when those components of the network
stack are modified to handle multiple network namespaces.
For now the ifindex generator is left global.
Fundametally ifindex numbers are per namespace, or else
we will have corner case problems with migration when
we get that far.
At the same time there are assumptions in the network stack
that the ifindex of a network device won't change. Making
the ifindex number global seems a good compromise until
the network stack can cope with ifindex changes when
you change namespaces, and the like.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c
index f8b1700..eee54c0 100644
--- a/drivers/atm/idt77252.c
+++ b/drivers/atm/idt77252.c
@@ -3576,7 +3576,7 @@
* XXX: <hack>
*/
sprintf(tname, "eth%d", card->index);
- tmp = dev_get_by_name(tname); /* jhs: was "tmp = dev_get(tname);" */
+ tmp = dev_get_by_name(&init_net, tname); /* jhs: was "tmp = dev_get(tname);" */
if (tmp) {
memcpy(card->atmdev->esi, tmp->dev_addr, 6);
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index 01fbdd3..30394f7 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -9,6 +9,7 @@
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/genhd.h>
+#include <net/net_namespace.h>
#include <asm/unaligned.h>
#include "aoe.h"
@@ -194,7 +195,7 @@
sl = sl_tail = NULL;
read_lock(&dev_base_lock);
- for_each_netdev(ifp) {
+ for_each_netdev(&init_net, ifp) {
dev_hold(ifp);
if (!is_aoe_netif(ifp))
goto cont;
diff --git a/drivers/infiniband/hw/cxgb3/cxio_hal.c b/drivers/infiniband/hw/cxgb3/cxio_hal.c
index beb2a38..eec6a30 100644
--- a/drivers/infiniband/hw/cxgb3/cxio_hal.c
+++ b/drivers/infiniband/hw/cxgb3/cxio_hal.c
@@ -37,6 +37,7 @@
#include <linux/spinlock.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
+#include <net/net_namespace.h>
#include "cxio_resource.h"
#include "cxio_hal.h"
@@ -894,7 +895,7 @@
if (cxio_hal_find_rdev_by_name(rdev_p->dev_name)) {
return -EBUSY;
}
- netdev_p = dev_get_by_name(rdev_p->dev_name);
+ netdev_p = dev_get_by_name(&init_net, rdev_p->dev_name);
if (!netdev_p) {
return -EINVAL;
}
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index cf97d8a..559fe94 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3719,7 +3719,7 @@
}
down_write(&(bonding_rwsem));
- slave_dev = dev_get_by_name(ifr->ifr_slave);
+ slave_dev = dev_get_by_name(&init_net, ifr->ifr_slave);
dprintk("slave_dev=%p: \n", slave_dev);
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 60cccf2..8289e27 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -35,6 +35,7 @@
#include <linux/ctype.h>
#include <linux/inet.h>
#include <linux/rtnetlink.h>
+#include <net/net_namespace.h>
/* #define BONDING_DEBUG 1 */
#include "bonding.h"
@@ -299,7 +300,7 @@
read_unlock_bh(&bond->lock);
printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n",
bond->dev->name, ifname);
- dev = dev_get_by_name(ifname);
+ dev = dev_get_by_name(&init_net, ifname);
if (!dev) {
printk(KERN_INFO DRV_NAME
": %s: Interface %s does not exist!\n",
diff --git a/drivers/net/eql.c b/drivers/net/eql.c
index 102218c..f1cc66d 100644
--- a/drivers/net/eql.c
+++ b/drivers/net/eql.c
@@ -116,6 +116,7 @@
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/netdevice.h>
+#include <net/net_namespace.h>
#include <linux/if.h>
#include <linux/if_arp.h>
@@ -412,7 +413,7 @@
if (copy_from_user(&srq, srqp, sizeof (slaving_request_t)))
return -EFAULT;
- slave_dev = dev_get_by_name(srq.slave_name);
+ slave_dev = dev_get_by_name(&init_net, srq.slave_name);
if (slave_dev) {
if ((master_dev->flags & IFF_UP) == IFF_UP) {
/* slave is not a master & not already a slave: */
@@ -460,7 +461,7 @@
if (copy_from_user(&srq, srqp, sizeof (slaving_request_t)))
return -EFAULT;
- slave_dev = dev_get_by_name(srq.slave_name);
+ slave_dev = dev_get_by_name(&init_net, srq.slave_name);
ret = -EINVAL;
if (slave_dev) {
spin_lock_bh(&eql->queue.lock);
@@ -493,7 +494,7 @@
if (copy_from_user(&sc, scp, sizeof (slave_config_t)))
return -EFAULT;
- slave_dev = dev_get_by_name(sc.slave_name);
+ slave_dev = dev_get_by_name(&init_net, sc.slave_name);
if (!slave_dev)
return -ENODEV;
@@ -528,7 +529,7 @@
if (copy_from_user(&sc, scp, sizeof (slave_config_t)))
return -EFAULT;
- slave_dev = dev_get_by_name(sc.slave_name);
+ slave_dev = dev_get_by_name(&init_net, sc.slave_name);
if (!slave_dev)
return -ENODEV;
diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c
index f5c3598..b06c6db 100644
--- a/drivers/net/ifb.c
+++ b/drivers/net/ifb.c
@@ -34,6 +34,7 @@
#include <linux/init.h>
#include <linux/moduleparam.h>
#include <net/pkt_sched.h>
+#include <net/net_namespace.h>
#define TX_TIMEOUT (2*HZ)
@@ -97,7 +98,7 @@
stats->tx_packets++;
stats->tx_bytes +=skb->len;
- skb->dev = __dev_get_by_index(skb->iif);
+ skb->dev = __dev_get_by_index(&init_net, skb->iif);
if (!skb->dev) {
dev_kfree_skb(skb);
stats->tx_dropped++;
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index dc74d00..2de073d 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -376,7 +376,7 @@
if (!tb[IFLA_LINK])
return -EINVAL;
- lowerdev = __dev_get_by_index(nla_get_u32(tb[IFLA_LINK]));
+ lowerdev = __dev_get_by_index(dev->nd_net, nla_get_u32(tb[IFLA_LINK]));
if (lowerdev == NULL)
return -ENODEV;
diff --git a/drivers/net/pppoe.c b/drivers/net/pppoe.c
index c5c70e4..2f130e0 100644
--- a/drivers/net/pppoe.c
+++ b/drivers/net/pppoe.c
@@ -216,7 +216,7 @@
struct net_device *dev;
int ifindex;
- dev = dev_get_by_name(sp->sa_addr.pppoe.dev);
+ dev = dev_get_by_name(&init_net, sp->sa_addr.pppoe.dev);
if(!dev)
return NULL;
ifindex = dev->ifindex;
@@ -603,7 +603,7 @@
/* Don't re-bind if sid==0 */
if (sp->sa_addr.pppoe.sid != 0) {
- dev = dev_get_by_name(sp->sa_addr.pppoe.dev);
+ dev = dev_get_by_name(&init_net, sp->sa_addr.pppoe.dev);
error = -ENODEV;
if (!dev)
diff --git a/drivers/net/shaper.c b/drivers/net/shaper.c
index 4c3d98f..3773b385 100644
--- a/drivers/net/shaper.c
+++ b/drivers/net/shaper.c
@@ -86,6 +86,7 @@
#include <net/dst.h>
#include <net/arp.h>
+#include <net/net_namespace.h>
struct shaper_cb {
unsigned long shapeclock; /* Time it should go out */
@@ -488,7 +489,7 @@
{
case SHAPER_SET_DEV:
{
- struct net_device *them=__dev_get_by_name(ss->ss_name);
+ struct net_device *them=__dev_get_by_name(&init_net, ss->ss_name);
if(them==NULL)
return -ENODEV;
if(sh->dev)
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 62b2b30..691d264f 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -62,6 +62,7 @@
#include <linux/if_ether.h>
#include <linux/if_tun.h>
#include <linux/crc32.h>
+#include <net/net_namespace.h>
#include <asm/system.h>
#include <asm/uaccess.h>
@@ -475,7 +476,7 @@
!capable(CAP_NET_ADMIN))
return -EPERM;
}
- else if (__dev_get_by_name(ifr->ifr_name))
+ else if (__dev_get_by_name(&init_net, ifr->ifr_name))
return -EINVAL;
else {
char *name;
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index ca1c689..2c86a44 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -345,7 +345,7 @@
else
snprintf(ifname, IFNAMSIZ, DRV_NAME "%%d");
- peer = rtnl_create_link(ifname, &veth_link_ops, tbp);
+ peer = rtnl_create_link(dev->nd_net, ifname, &veth_link_ops, tbp);
if (IS_ERR(peer))
return PTR_ERR(peer);
diff --git a/drivers/net/wan/dlci.c b/drivers/net/wan/dlci.c
index 61041d5..bc12810 100644
--- a/drivers/net/wan/dlci.c
+++ b/drivers/net/wan/dlci.c
@@ -361,7 +361,7 @@
/* validate slave device */
- slave = dev_get_by_name(dlci->devname);
+ slave = dev_get_by_name(&init_net, dlci->devname);
if (!slave)
return -ENODEV;
@@ -427,7 +427,7 @@
int err;
/* validate slave device */
- master = __dev_get_by_name(dlci->devname);
+ master = __dev_get_by_name(&init_net, dlci->devname);
if (!master)
return(-ENODEV);
diff --git a/drivers/net/wan/sbni.c b/drivers/net/wan/sbni.c
index 1cc18e7..8d7e01e 100644
--- a/drivers/net/wan/sbni.c
+++ b/drivers/net/wan/sbni.c
@@ -54,6 +54,7 @@
#include <linux/init.h>
#include <linux/delay.h>
+#include <net/net_namespace.h>
#include <net/arp.h>
#include <asm/io.h>
@@ -1361,7 +1362,7 @@
if (copy_from_user( slave_name, ifr->ifr_data, sizeof slave_name ))
return -EFAULT;
- slave_dev = dev_get_by_name( slave_name );
+ slave_dev = dev_get_by_name(&init_net, slave_name );
if( !slave_dev || !(slave_dev->flags & IFF_UP) ) {
printk( KERN_ERR "%s: trying to enslave non-active "
"device %s\n", dev->name, slave_name );
diff --git a/drivers/net/wireless/strip.c b/drivers/net/wireless/strip.c
index edb214e..904e548 100644
--- a/drivers/net/wireless/strip.c
+++ b/drivers/net/wireless/strip.c
@@ -1972,7 +1972,7 @@
sizeof(zero_address))) {
struct net_device *dev;
read_lock_bh(&dev_base_lock);
- for_each_netdev(dev) {
+ for_each_netdev(&init_net, dev) {
if (dev->type == strip_info->dev->type &&
!memcmp(dev->dev_addr,
&strip_info->true_dev_addr,
diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c
index e5d7ed9..a6d6b24 100644
--- a/drivers/parisc/led.c
+++ b/drivers/parisc/led.c
@@ -359,7 +359,7 @@
* for reading should be OK */
read_lock(&dev_base_lock);
rcu_read_lock();
- for_each_netdev(dev) {
+ for_each_netdev(&init_net, dev) {
struct net_device_stats *stats;
struct in_device *in_dev = __in_dev_get_rcu(dev);
if (!in_dev || !in_dev->ifa_list)