Commit 881d966b authored by Eric W. Biederman's avatar Eric W. Biederman Committed by David S. Miller

[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: default avatarEric W. Biederman <ebiederm@xmission.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b4b51029
...@@ -16,6 +16,7 @@ ...@@ -16,6 +16,7 @@
#include <linux/errno.h> #include <linux/errno.h>
#include <linux/kernel_stat.h> #include <linux/kernel_stat.h>
#include <linux/netdevice.h> #include <linux/netdevice.h>
#include <net/net_namespace.h>
#include "appldata.h" #include "appldata.h"
...@@ -107,7 +108,7 @@ static void appldata_get_net_sum_data(void *data) ...@@ -107,7 +108,7 @@ static void appldata_get_net_sum_data(void *data)
tx_dropped = 0; tx_dropped = 0;
collisions = 0; collisions = 0;
read_lock(&dev_base_lock); read_lock(&dev_base_lock);
for_each_netdev(dev) { for_each_netdev(&init_net, dev) {
stats = dev->get_stats(dev); stats = dev->get_stats(dev);
rx_packets += stats->rx_packets; rx_packets += stats->rx_packets;
tx_packets += stats->tx_packets; tx_packets += stats->tx_packets;
......
...@@ -28,6 +28,7 @@ ...@@ -28,6 +28,7 @@
#include <linux/compat.h> #include <linux/compat.h>
#include <net/sock.h> #include <net/sock.h>
#include <net/net_namespace.h>
#include <asm/uaccess.h> #include <asm/uaccess.h>
#include <asm/termios.h> #include <asm/termios.h>
...@@ -686,7 +687,7 @@ static inline int solaris_i(unsigned int fd, unsigned int cmd, u32 arg) ...@@ -686,7 +687,7 @@ static inline int solaris_i(unsigned int fd, unsigned int cmd, u32 arg)
int i = 0; int i = 0;
read_lock_bh(&dev_base_lock); read_lock_bh(&dev_base_lock);
for_each_netdev(d) for_each_netdev(&init_net, d)
i++; i++;
read_unlock_bh(&dev_base_lock); read_unlock_bh(&dev_base_lock);
......
...@@ -3576,7 +3576,7 @@ init_card(struct atm_dev *dev) ...@@ -3576,7 +3576,7 @@ init_card(struct atm_dev *dev)
* XXX: <hack> * XXX: <hack>
*/ */
sprintf(tname, "eth%d", card->index); 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) { if (tmp) {
memcpy(card->atmdev->esi, tmp->dev_addr, 6); memcpy(card->atmdev->esi, tmp->dev_addr, 6);
......
...@@ -9,6 +9,7 @@ ...@@ -9,6 +9,7 @@
#include <linux/skbuff.h> #include <linux/skbuff.h>
#include <linux/netdevice.h> #include <linux/netdevice.h>
#include <linux/genhd.h> #include <linux/genhd.h>
#include <net/net_namespace.h>
#include <asm/unaligned.h> #include <asm/unaligned.h>
#include "aoe.h" #include "aoe.h"
...@@ -194,7 +195,7 @@ aoecmd_cfg_pkts(ushort aoemajor, unsigned char aoeminor, struct sk_buff **tail) ...@@ -194,7 +195,7 @@ aoecmd_cfg_pkts(ushort aoemajor, unsigned char aoeminor, struct sk_buff **tail)
sl = sl_tail = NULL; sl = sl_tail = NULL;
read_lock(&dev_base_lock); read_lock(&dev_base_lock);
for_each_netdev(ifp) { for_each_netdev(&init_net, ifp) {
dev_hold(ifp); dev_hold(ifp);
if (!is_aoe_netif(ifp)) if (!is_aoe_netif(ifp))
goto cont; goto cont;
......
...@@ -37,6 +37,7 @@ ...@@ -37,6 +37,7 @@
#include <linux/spinlock.h> #include <linux/spinlock.h>
#include <linux/pci.h> #include <linux/pci.h>
#include <linux/dma-mapping.h> #include <linux/dma-mapping.h>
#include <net/net_namespace.h>
#include "cxio_resource.h" #include "cxio_resource.h"
#include "cxio_hal.h" #include "cxio_hal.h"
...@@ -894,7 +895,7 @@ int cxio_rdev_open(struct cxio_rdev *rdev_p) ...@@ -894,7 +895,7 @@ int cxio_rdev_open(struct cxio_rdev *rdev_p)
if (cxio_hal_find_rdev_by_name(rdev_p->dev_name)) { if (cxio_hal_find_rdev_by_name(rdev_p->dev_name)) {
return -EBUSY; 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) { if (!netdev_p) {
return -EINVAL; return -EINVAL;
} }
......
...@@ -3719,7 +3719,7 @@ static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd ...@@ -3719,7 +3719,7 @@ static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd
} }
down_write(&(bonding_rwsem)); 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); dprintk("slave_dev=%p: \n", slave_dev);
......
...@@ -35,6 +35,7 @@ ...@@ -35,6 +35,7 @@
#include <linux/ctype.h> #include <linux/ctype.h>
#include <linux/inet.h> #include <linux/inet.h>
#include <linux/rtnetlink.h> #include <linux/rtnetlink.h>
#include <net/net_namespace.h>
/* #define BONDING_DEBUG 1 */ /* #define BONDING_DEBUG 1 */
#include "bonding.h" #include "bonding.h"
...@@ -299,7 +300,7 @@ static ssize_t bonding_store_slaves(struct device *d, ...@@ -299,7 +300,7 @@ static ssize_t bonding_store_slaves(struct device *d,
read_unlock_bh(&bond->lock); read_unlock_bh(&bond->lock);
printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n", printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n",
bond->dev->name, ifname); bond->dev->name, ifname);
dev = dev_get_by_name(ifname); dev = dev_get_by_name(&init_net, ifname);
if (!dev) { if (!dev) {
printk(KERN_INFO DRV_NAME printk(KERN_INFO DRV_NAME
": %s: Interface %s does not exist!\n", ": %s: Interface %s does not exist!\n",
......
...@@ -116,6 +116,7 @@ ...@@ -116,6 +116,7 @@
#include <linux/init.h> #include <linux/init.h>
#include <linux/timer.h> #include <linux/timer.h>
#include <linux/netdevice.h> #include <linux/netdevice.h>
#include <net/net_namespace.h>
#include <linux/if.h> #include <linux/if.h>
#include <linux/if_arp.h> #include <linux/if_arp.h>
...@@ -412,7 +413,7 @@ static int eql_enslave(struct net_device *master_dev, slaving_request_t __user * ...@@ -412,7 +413,7 @@ static int eql_enslave(struct net_device *master_dev, slaving_request_t __user *
if (copy_from_user(&srq, srqp, sizeof (slaving_request_t))) if (copy_from_user(&srq, srqp, sizeof (slaving_request_t)))
return -EFAULT; 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 (slave_dev) {
if ((master_dev->flags & IFF_UP) == IFF_UP) { if ((master_dev->flags & IFF_UP) == IFF_UP) {
/* slave is not a master & not already a slave: */ /* slave is not a master & not already a slave: */
...@@ -460,7 +461,7 @@ static int eql_emancipate(struct net_device *master_dev, slaving_request_t __use ...@@ -460,7 +461,7 @@ static int eql_emancipate(struct net_device *master_dev, slaving_request_t __use
if (copy_from_user(&srq, srqp, sizeof (slaving_request_t))) if (copy_from_user(&srq, srqp, sizeof (slaving_request_t)))
return -EFAULT; return -EFAULT;
slave_dev = dev_get_by_name(srq.slave_name); slave_dev = dev_get_by_name(&init_net, srq.slave_name);
ret = -EINVAL; ret = -EINVAL;
if (slave_dev) { if (slave_dev) {
spin_lock_bh(&eql->queue.lock); spin_lock_bh(&eql->queue.lock);
...@@ -493,7 +494,7 @@ static int eql_g_slave_cfg(struct net_device *dev, slave_config_t __user *scp) ...@@ -493,7 +494,7 @@ static int eql_g_slave_cfg(struct net_device *dev, slave_config_t __user *scp)
if (copy_from_user(&sc, scp, sizeof (slave_config_t))) if (copy_from_user(&sc, scp, sizeof (slave_config_t)))
return -EFAULT; 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) if (!slave_dev)
return -ENODEV; return -ENODEV;
...@@ -528,7 +529,7 @@ static int eql_s_slave_cfg(struct net_device *dev, slave_config_t __user *scp) ...@@ -528,7 +529,7 @@ static int eql_s_slave_cfg(struct net_device *dev, slave_config_t __user *scp)
if (copy_from_user(&sc, scp, sizeof (slave_config_t))) if (copy_from_user(&sc, scp, sizeof (slave_config_t)))
return -EFAULT; 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) if (!slave_dev)
return -ENODEV; return -ENODEV;
......
...@@ -34,6 +34,7 @@ ...@@ -34,6 +34,7 @@
#include <linux/init.h> #include <linux/init.h>
#include <linux/moduleparam.h> #include <linux/moduleparam.h>
#include <net/pkt_sched.h> #include <net/pkt_sched.h>
#include <net/net_namespace.h>
#define TX_TIMEOUT (2*HZ) #define TX_TIMEOUT (2*HZ)
...@@ -97,7 +98,7 @@ static void ri_tasklet(unsigned long dev) ...@@ -97,7 +98,7 @@ static void ri_tasklet(unsigned long dev)
stats->tx_packets++; stats->tx_packets++;
stats->tx_bytes +=skb->len; 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) { if (!skb->dev) {
dev_kfree_skb(skb); dev_kfree_skb(skb);
stats->tx_dropped++; stats->tx_dropped++;
......
...@@ -376,7 +376,7 @@ static int macvlan_newlink(struct net_device *dev, ...@@ -376,7 +376,7 @@ static int macvlan_newlink(struct net_device *dev,
if (!tb[IFLA_LINK]) if (!tb[IFLA_LINK])
return -EINVAL; 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) if (lowerdev == NULL)
return -ENODEV; return -ENODEV;
......
...@@ -216,7 +216,7 @@ static inline struct pppox_sock *get_item_by_addr(struct sockaddr_pppox *sp) ...@@ -216,7 +216,7 @@ static inline struct pppox_sock *get_item_by_addr(struct sockaddr_pppox *sp)
struct net_device *dev; struct net_device *dev;
int ifindex; 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) if(!dev)
return NULL; return NULL;
ifindex = dev->ifindex; ifindex = dev->ifindex;
...@@ -603,7 +603,7 @@ static int pppoe_connect(struct socket *sock, struct sockaddr *uservaddr, ...@@ -603,7 +603,7 @@ static int pppoe_connect(struct socket *sock, struct sockaddr *uservaddr,
/* Don't re-bind if sid==0 */ /* Don't re-bind if sid==0 */
if (sp->sa_addr.pppoe.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; error = -ENODEV;
if (!dev) if (!dev)
......
...@@ -86,6 +86,7 @@ ...@@ -86,6 +86,7 @@
#include <net/dst.h> #include <net/dst.h>
#include <net/arp.h> #include <net/arp.h>
#include <net/net_namespace.h>
struct shaper_cb { struct shaper_cb {
unsigned long shapeclock; /* Time it should go out */ unsigned long shapeclock; /* Time it should go out */
...@@ -488,7 +489,7 @@ static int shaper_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) ...@@ -488,7 +489,7 @@ static int shaper_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{ {
case SHAPER_SET_DEV: 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) if(them==NULL)
return -ENODEV; return -ENODEV;
if(sh->dev) if(sh->dev)
......
...@@ -62,6 +62,7 @@ ...@@ -62,6 +62,7 @@
#include <linux/if_ether.h> #include <linux/if_ether.h>
#include <linux/if_tun.h> #include <linux/if_tun.h>
#include <linux/crc32.h> #include <linux/crc32.h>
#include <net/net_namespace.h>
#include <asm/system.h> #include <asm/system.h>
#include <asm/uaccess.h> #include <asm/uaccess.h>
...@@ -475,7 +476,7 @@ static int tun_set_iff(struct file *file, struct ifreq *ifr) ...@@ -475,7 +476,7 @@ static int tun_set_iff(struct file *file, struct ifreq *ifr)
!capable(CAP_NET_ADMIN)) !capable(CAP_NET_ADMIN))
return -EPERM; return -EPERM;
} }
else if (__dev_get_by_name(ifr->ifr_name)) else if (__dev_get_by_name(&init_net, ifr->ifr_name))
return -EINVAL; return -EINVAL;
else { else {
char *name; char *name;
......
...@@ -345,7 +345,7 @@ static int veth_newlink(struct net_device *dev, ...@@ -345,7 +345,7 @@ static int veth_newlink(struct net_device *dev,
else else
snprintf(ifname, IFNAMSIZ, DRV_NAME "%%d"); 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)) if (IS_ERR(peer))
return PTR_ERR(peer); return PTR_ERR(peer);
......
...@@ -361,7 +361,7 @@ static int dlci_add(struct dlci_add *dlci) ...@@ -361,7 +361,7 @@ static int dlci_add(struct dlci_add *dlci)
/* validate slave device */ /* validate slave device */
slave = dev_get_by_name(dlci->devname); slave = dev_get_by_name(&init_net, dlci->devname);
if (!slave) if (!slave)
return -ENODEV; return -ENODEV;
...@@ -427,7 +427,7 @@ static int dlci_del(struct dlci_add *dlci) ...@@ -427,7 +427,7 @@ static int dlci_del(struct dlci_add *dlci)
int err; int err;
/* validate slave device */ /* validate slave device */
master = __dev_get_by_name(dlci->devname); master = __dev_get_by_name(&init_net, dlci->devname);
if (!master) if (!master)
return(-ENODEV); return(-ENODEV);
......
...@@ -54,6 +54,7 @@ ...@@ -54,6 +54,7 @@
#include <linux/init.h> #include <linux/init.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <net/net_namespace.h>
#include <net/arp.h> #include <net/arp.h>
#include <asm/io.h> #include <asm/io.h>
...@@ -1361,7 +1362,7 @@ sbni_ioctl( struct net_device *dev, struct ifreq *ifr, int cmd ) ...@@ -1361,7 +1362,7 @@ sbni_ioctl( struct net_device *dev, struct ifreq *ifr, int cmd )
if (copy_from_user( slave_name, ifr->ifr_data, sizeof slave_name )) if (copy_from_user( slave_name, ifr->ifr_data, sizeof slave_name ))
return -EFAULT; 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) ) { if( !slave_dev || !(slave_dev->flags & IFF_UP) ) {
printk( KERN_ERR "%s: trying to enslave non-active " printk( KERN_ERR "%s: trying to enslave non-active "
"device %s\n", dev->name, slave_name ); "device %s\n", dev->name, slave_name );
......
...@@ -1972,7 +1972,7 @@ static struct net_device *get_strip_dev(struct strip *strip_info) ...@@ -1972,7 +1972,7 @@ static struct net_device *get_strip_dev(struct strip *strip_info)
sizeof(zero_address))) { sizeof(zero_address))) {
struct net_device *dev; struct net_device *dev;
read_lock_bh(&dev_base_lock); read_lock_bh(&dev_base_lock);
for_each_netdev(dev) { for_each_netdev(&init_net, dev) {
if (dev->type == strip_info->dev->type && if (dev->type == strip_info->dev->type &&
!memcmp(dev->dev_addr, !memcmp(dev->dev_addr,
&strip_info->true_dev_addr, &strip_info->true_dev_addr,
......
...@@ -359,7 +359,7 @@ static __inline__ int led_get_net_activity(void) ...@@ -359,7 +359,7 @@ static __inline__ int led_get_net_activity(void)
* for reading should be OK */ * for reading should be OK */
read_lock(&dev_base_lock); read_lock(&dev_base_lock);
rcu_read_lock(); rcu_read_lock();
for_each_netdev(dev) { for_each_netdev(&init_net, dev) {
struct net_device_stats *stats; struct net_device_stats *stats;
struct in_device *in_dev = __in_dev_get_rcu(dev); struct in_device *in_dev = __in_dev_get_rcu(dev);
if (!in_dev || !in_dev->ifa_list) if (!in_dev || !in_dev->ifa_list)
......
...@@ -8,6 +8,7 @@ ...@@ -8,6 +8,7 @@
#include <linux/inetdevice.h> #include <linux/inetdevice.h>
#include <linux/netdevice.h> #include <linux/netdevice.h>
#include <linux/if_arp.h> #include <linux/if_arp.h>
#include <net/net_namespace.h>
#include "internal.h" #include "internal.h"
/* /*
...@@ -23,7 +24,7 @@ int afs_get_MAC_address(u8 *mac, size_t maclen) ...@@ -23,7 +24,7 @@ int afs_get_MAC_address(u8 *mac, size_t maclen)
BUG(); BUG();
rtnl_lock(); rtnl_lock();
dev = __dev_getfirstbyhwtype(ARPHRD_ETHER); dev = __dev_getfirstbyhwtype(&init_net, ARPHRD_ETHER);
if (dev) { if (dev) {
memcpy(mac, dev->dev_addr, maclen); memcpy(mac, dev->dev_addr, maclen);
ret = 0; ret = 0;
...@@ -47,7 +48,7 @@ int afs_get_ipv4_interfaces(struct afs_interface *bufs, size_t maxbufs, ...@@ -47,7 +48,7 @@ int afs_get_ipv4_interfaces(struct afs_interface *bufs, size_t maxbufs,
ASSERT(maxbufs > 0); ASSERT(maxbufs > 0);
rtnl_lock(); rtnl_lock();
for_each_netdev(dev) { for_each_netdev(&init_net, dev) {
if (dev->type == ARPHRD_LOOPBACK && !wantloopback) if (dev->type == ARPHRD_LOOPBACK && !wantloopback)
continue; continue;
idev = __in_dev_get_rtnl(dev); idev = __in_dev_get_rtnl(dev);
......
...@@ -104,7 +104,7 @@ struct __fdb_entry ...@@ -104,7 +104,7 @@ struct __fdb_entry
#include <linux/netdevice.h> #include <linux/netdevice.h>
extern void brioctl_set(int (*ioctl_hook)(unsigned int, void __user *)); extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
extern struct sk_buff *(*br_handle_frame_hook)(struct net_bridge_port *p, extern struct sk_buff *(*br_handle_frame_hook)(struct net_bridge_port *p,
struct sk_buff *skb); struct sk_buff *skb);
extern int (*br_should_route_hook)(struct sk_buff **pskb); extern int (*br_should_route_hook)(struct sk_buff **pskb);
......
...@@ -62,7 +62,7 @@ struct vlan_hdr { ...@@ -62,7 +62,7 @@ struct vlan_hdr {
#define VLAN_VID_MASK 0xfff #define VLAN_VID_MASK 0xfff
/* found in socket.c */ /* found in socket.c */
extern void vlan_ioctl_set(int (*hook)(void __user *)); extern void vlan_ioctl_set(int (*hook)(struct net *, void __user *));
#define VLAN_NAME "vlan" #define VLAN_NAME "vlan"
......
...@@ -741,44 +741,48 @@ struct packet_type { ...@@ -741,44 +741,48 @@ struct packet_type {
#include <linux/notifier.h> #include <linux/notifier.h>
extern struct net_device loopback_dev; /* The loopback */ extern struct net_device loopback_dev; /* The loopback */
extern struct list_head dev_base_head; /* All devices */
extern rwlock_t dev_base_lock; /* Device list lock */ extern rwlock_t dev_base_lock; /* Device list lock */
#define for_each_netdev(d) \
list_for_each_entry(d, &dev_base_head, dev_list)
#define for_each_netdev_safe(d, n) \
list_for_each_entry_safe(d, n, &dev_base_head, dev_list)
#define for_each_netdev_continue(d) \
list_for_each_entry_continue(d, &dev_base_head, dev_list)
#define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
static inline struct net_device *next_net_device(struct net_device *dev)
{
struct list_head *lh;
lh = dev->dev_list.next; #define for_each_netdev(net, d) \
return lh == &dev_base_head ? NULL : net_device_entry(lh); list_for_each_entry(d, &(net)->dev_base_head, dev_list)
} #define for_each_netdev_safe(net, d, n) \
list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
#define for_each_netdev_continue(net, d) \
list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
#define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
static inline struct net_device *first_net_device(void) #define next_net_device(d) \
{ ({ \
return list_empty(&dev_base_head) ? NULL : struct net_device *dev = d; \
net_device_entry(dev_base_head.next); struct list_head *lh; \
} struct net *net; \
\
net = dev->nd_net; \
lh = dev->dev_list.next; \
lh == &net->dev_base_head ? NULL : net_device_entry(lh); \
})
#define first_net_device(N) \
({ \
struct net *NET = (N); \
list_empty(&NET->dev_base_head) ? NULL : \
net_device_entry(NET->dev_base_head.next); \
})
extern int netdev_boot_setup_check(struct net_device *dev); extern int netdev_boot_setup_check(struct net_device *dev);
extern unsigned long netdev_boot_base(const char *prefix, int unit); extern unsigned long netdev_boot_base(const char *prefix, int unit);
extern struct net_device *dev_getbyhwaddr(unsigned short type, char *hwaddr); extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr);
extern struct net_device *dev_getfirstbyhwtype(unsigned short type); extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type);
extern struct net_device *__dev_getfirstbyhwtype(unsigned short type); extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type);
extern void dev_add_pack(struct packet_type *pt); extern void dev_add_pack(struct packet_type *pt);
extern void dev_remove_pack(struct packet_type *pt); extern void dev_remove_pack(struct packet_type *pt);
extern void __dev_remove_pack(struct packet_type *pt); extern void __dev_remove_pack(struct packet_type *pt);
extern struct net_device *dev_get_by_flags(unsigned short flags, extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags,
unsigned short mask); unsigned short mask);
extern struct net_device *dev_get_by_name(const char *name); extern struct net_device *dev_get_by_name(struct net *net, const char *name);
extern struct net_device *__dev_get_by_name(const char *name); extern struct net_device *__dev_get_by_name(struct net *net, const char *name);
extern int dev_alloc_name(