int devinet_ioctl(struct net *net, unsigned int cmd, void __user *arg)
{
struct ifreq ifr;
struct sockaddr_in sin_orig;
struct sockaddr_in *sin = (struct sockaddr_in *)&ifr.ifr_addr;
struct in_device *in_dev;
struct in_ifaddr **ifap = NULL;
struct in_ifaddr *ifa = NULL;
struct net_device *dev;
char *colon;
int ret = -EFAULT;
int tryaddrmatch = 0;
/*
* Fetch the caller's info block into kernel space
*/
if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
goto out;
ifr.ifr_name[IFNAMSIZ - 1] = 0;
/* save original address for comparison */
memcpy(&sin_orig, sin, sizeof(*sin));
colon = strchr(ifr.ifr_name, ':');
if (colon)
*colon = 0;
dev_load(net, ifr.ifr_name);
switch (cmd) {
case SIOCGIFADDR: /* Get interface address */
case SIOCGIFBRDADDR: /* Get the broadcast address */
case SIOCGIFDSTADDR: /* Get the destination address */
case SIOCGIFNETMASK: /* Get the netmask for the interface */
/* Note that these ioctls will not sleep,
so that we do not impose a lock.
One day we will be forced to put shlock here (I mean SMP)
*/
tryaddrmatch = (sin_orig.sin_family == AF_INET);
memset(sin, 0, sizeof(*sin));
sin->sin_family = AF_INET;
break;
case SIOCSIFFLAGS:
ret = -EACCES;
if (!capable(CAP_NET_ADMIN))
goto out;
break;
case SIOCSIFADDR: /* Set interface address (and family) */
case SIOCSIFBRDADDR: /* Set the broadcast address */
case SIOCSIFDSTADDR: /* Set the destination address */
case SIOCSIFNETMASK: /* Set the netmask for the interface */
case SIOCKILLADDR: /* Nuke all sockets on this address */
ret = -EACCES;
if (!capable(CAP_NET_ADMIN))
goto out;
ret = -EINVAL;
if (sin->sin_family != AF_INET)
goto out;
break;
default:
ret = -EINVAL;
goto out;
}
rtnl_lock();
ret = -ENODEV;
dev = __dev_get_by_name(net, ifr.ifr_name);
if (!dev)
goto done;
if (colon)
*colon = ':';
in_dev = __in_dev_get_rtnl(dev);
if (in_dev) {
if (tryaddrmatch) {
/* Matthias Andree */
/* compare label and address (4.4BSD style) */
/* note: we only do this for a limited set of ioctls
and only if the original address family was AF_INET.
This is checked above. */
for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
ifap = &ifa->ifa_next) {
if (!strcmp(ifr.ifr_name, ifa->ifa_label) &&
sin_orig.sin_addr.s_addr ==
ifa->ifa_address) {
break; /* found */
}
}
}
/* we didn't get a match, maybe the application is
4.3BSD-style and passed in junk so we fall back to
comparing just the label */
if (!ifa) {
for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
ifap = &ifa->ifa_next)
if (!strcmp(ifr.ifr_name, ifa->ifa_label))
break;
}
}
ret = -EADDRNOTAVAIL;
if (!ifa && cmd != SIOCSIFADDR && cmd != SIOCSIFFLAGS
&& cmd != SIOCKILLADDR)
goto done;
switch (cmd) {
case SIOCGIFADDR: /* Get interface address */
sin->sin_addr.s_addr = ifa->ifa_local;
goto rarok;
case SIOCGIFBRDADDR: /* Get the broadcast address */
sin->sin_addr.s_addr = ifa->ifa_broadcast;
goto rarok;
case SIOCGIFDSTADDR: /* Get the destination address */
sin->sin_addr.s_addr = ifa->ifa_address;
goto rarok;
case SIOCGIFNETMASK: /* Get the netmask for the interface */
sin->sin_addr.s_addr = ifa->ifa_mask;
goto rarok;
case SIOCSIFFLAGS:
if (colon) {
ret = -EADDRNOTAVAIL;
if (!ifa)
break;
ret = 0;
if (!(ifr.ifr_flags & IFF_UP))
inet_del_ifa(in_dev, ifap, 1);
break;
}
ret = dev_change_flags(dev, ifr.ifr_flags);
break;
case SIOCSIFADDR: /* Set interface address (and family) */
ret = -EINVAL;
if (inet_abc_len(sin->sin_addr.s_addr) < 0)
break;
if (!ifa) {
ret = -ENOBUFS;
ifa = inet_alloc_ifa();
if (!ifa)
break;
if (colon)
memcpy(ifa->ifa_label, ifr.ifr_name, IFNAMSIZ);
else
memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
} else {
ret = 0;
if (ifa->ifa_local == sin->sin_addr.s_addr)
break;
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_broadcast = 0;
ifa->ifa_scope = 0;
}
ifa->ifa_address = ifa->ifa_local = sin->sin_addr.s_addr;
if (!(dev->flags & IFF_POINTOPOINT)) {
ifa->ifa_prefixlen = inet_abc_len(ifa->ifa_address);
ifa->ifa_mask = inet_make_mask(ifa->ifa_prefixlen);
if ((dev->flags & IFF_BROADCAST) &&
ifa->ifa_prefixlen < 31)
ifa->ifa_broadcast = ifa->ifa_address |
~ifa->ifa_mask;
} else {
ifa->ifa_prefixlen = 32;
ifa->ifa_mask = inet_make_mask(32);
}
ret = inet_set_ifa(dev, ifa);
break;
case SIOCSIFBRDADDR: /* Set the broadcast address */
ret = 0;
if (ifa->ifa_broadcast != sin->sin_addr.s_addr) {
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_broadcast = sin->sin_addr.s_addr;
inet_insert_ifa(ifa);
}
break;
case SIOCSIFDSTADDR: /* Set the destination address */
ret = 0;
if (ifa->ifa_address == sin->sin_addr.s_addr)
break;
ret = -EINVAL;
if (inet_abc_len(sin->sin_addr.s_addr) < 0)
break;
ret = 0;
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_address = sin->sin_addr.s_addr;
inet_insert_ifa(ifa);
break;
case SIOCSIFNETMASK: /* Set the netmask for the interface */
/*
* The mask we set must be legal.
*/
ret = -EINVAL;
if (bad_mask(sin->sin_addr.s_addr, 0))
break;
ret = 0;
if (ifa->ifa_mask != sin->sin_addr.s_addr) {
__be32 old_mask = ifa->ifa_mask;
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_mask = sin->sin_addr.s_addr;
ifa->ifa_prefixlen = inet_mask_len(ifa->ifa_mask);
/* See if current broadcast address matches
* with current netmask, then recalculate
* the broadcast address. Otherwise it's a
* funny address, so don't touch it since
* the user seems to know what (s)he's doing...
*/
if ((dev->flags & IFF_BROADCAST) &&
(ifa->ifa_prefixlen < 31) &&
(ifa->ifa_broadcast ==
(ifa->ifa_local|~old_mask))) {
ifa->ifa_broadcast = (ifa->ifa_local |
~sin->sin_addr.s_addr);
}
inet_insert_ifa(ifa);
}
break;
case SIOCKILLADDR: /* Nuke all connections on this address */
ret = 0;
tcp_v4_nuke_addr(sin->sin_addr.s_addr);
break;
}
done:
rtnl_unlock();
out:
return ret;
rarok:
rtnl_unlock();
ret = copy_to_user(arg, &ifr, sizeof(struct ifreq)) ? -EFAULT : 0;
goto out;
}
int devinet_ioctl(unsigned int cmd, void *arg)
{
struct ifreq ifr;
struct sockaddr_in sin_orig;
struct sockaddr_in *sin = (struct sockaddr_in *)&ifr.ifr_addr;
struct in_device *in_dev;
struct in_ifaddr **ifap = NULL;
struct in_ifaddr *ifa = NULL;
struct net_device *dev;
char *colon;
int ret = 0;
int tryaddrmatch = 0;
/*
* Fetch the caller's info block into kernel space
*/
if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
return -EFAULT;
ifr.ifr_name[IFNAMSIZ-1] = 0;
/* save original address for comparison */
memcpy(&sin_orig, sin, sizeof(*sin));
colon = strchr(ifr.ifr_name, ':');
if (colon)
*colon = 0;
#ifdef CONFIG_KMOD
dev_load(ifr.ifr_name);
#endif
switch(cmd) {
case SIOCGIFADDR: /* Get interface address */
case SIOCGIFBRDADDR: /* Get the broadcast address */
case SIOCGIFDSTADDR: /* Get the destination address */
case SIOCGIFNETMASK: /* Get the netmask for the interface */
/* Note that these ioctls will not sleep,
so that we do not impose a lock.
One day we will be forced to put shlock here (I mean SMP)
*/
tryaddrmatch = (sin_orig.sin_family == AF_INET);
memset(sin, 0, sizeof(*sin));
sin->sin_family = AF_INET;
break;
case SIOCSIFFLAGS:
if (!capable(CAP_NET_ADMIN))
return -EACCES;
break;
case SIOCSIFADDR: /* Set interface address (and family) */
case SIOCSIFBRDADDR: /* Set the broadcast address */
case SIOCSIFDSTADDR: /* Set the destination address */
case SIOCSIFNETMASK: /* Set the netmask for the interface */
if (!capable(CAP_NET_ADMIN))
return -EACCES;
if (sin->sin_family != AF_INET)
return -EINVAL;
break;
default:
return -EINVAL;
}
dev_probe_lock();
rtnl_lock();
if ((dev = __dev_get_by_name(ifr.ifr_name)) == NULL) {
ret = -ENODEV;
goto done;
}
if (colon)
*colon = ':';
if ((in_dev=__in_dev_get(dev)) != NULL) {
if (tryaddrmatch) {
/* Matthias Andree */
/* compare label and address (4.4BSD style) */
/* note: we only do this for a limited set of ioctls
and only if the original address family was AF_INET.
This is checked above. */
for (ifap=&in_dev->ifa_list; (ifa=*ifap) != NULL; ifap=&ifa->ifa_next) {
if ((strcmp(ifr.ifr_name, ifa->ifa_label) == 0)
&& (sin_orig.sin_addr.s_addr == ifa->ifa_address)) {
break; /* found */
}
}
}
/* we didn't get a match, maybe the application is
4.3BSD-style and passed in junk so we fall back to
comparing just the label */
if (ifa == NULL) {
for (ifap=&in_dev->ifa_list; (ifa=*ifap) != NULL; ifap=&ifa->ifa_next)
if (strcmp(ifr.ifr_name, ifa->ifa_label) == 0)
break;
}
}
if (ifa == NULL && cmd != SIOCSIFADDR && cmd != SIOCSIFFLAGS) {
ret = -EADDRNOTAVAIL;
goto done;
}
switch(cmd) {
case SIOCGIFADDR: /* Get interface address */
sin->sin_addr.s_addr = ifa->ifa_local;
goto rarok;
case SIOCGIFBRDADDR: /* Get the broadcast address */
sin->sin_addr.s_addr = ifa->ifa_broadcast;
goto rarok;
case SIOCGIFDSTADDR: /* Get the destination address */
sin->sin_addr.s_addr = ifa->ifa_address;
goto rarok;
case SIOCGIFNETMASK: /* Get the netmask for the interface */
sin->sin_addr.s_addr = ifa->ifa_mask;
goto rarok;
case SIOCSIFFLAGS:
if (colon) {
if (ifa == NULL) {
ret = -EADDRNOTAVAIL;
break;
}
if (!(ifr.ifr_flags&IFF_UP))
inet_del_ifa(in_dev, ifap, 1);
break;
}
ret = dev_change_flags(dev, ifr.ifr_flags);
break;
case SIOCSIFADDR: /* Set interface address (and family) */
if (inet_abc_len(sin->sin_addr.s_addr) < 0) {
ret = -EINVAL;
break;
}
if (!ifa) {
if ((ifa = inet_alloc_ifa()) == NULL) {
ret = -ENOBUFS;
break;
}
if (colon)
memcpy(ifa->ifa_label, ifr.ifr_name, IFNAMSIZ);
else
memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
} else {
ret = 0;
if (ifa->ifa_local == sin->sin_addr.s_addr)
break;
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_broadcast = 0;
ifa->ifa_anycast = 0;
}
ifa->ifa_address =
ifa->ifa_local = sin->sin_addr.s_addr;
if (!(dev->flags&IFF_POINTOPOINT)) {
ifa->ifa_prefixlen = inet_abc_len(ifa->ifa_address);
ifa->ifa_mask = inet_make_mask(ifa->ifa_prefixlen);
if ((dev->flags&IFF_BROADCAST) && ifa->ifa_prefixlen < 31)
ifa->ifa_broadcast = ifa->ifa_address|~ifa->ifa_mask;
} else {
ifa->ifa_prefixlen = 32;
ifa->ifa_mask = inet_make_mask(32);
}
ret = inet_set_ifa(dev, ifa);
break;
case SIOCSIFBRDADDR: /* Set the broadcast address */
if (ifa->ifa_broadcast != sin->sin_addr.s_addr) {
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_broadcast = sin->sin_addr.s_addr;
inet_insert_ifa(ifa);
}
break;
case SIOCSIFDSTADDR: /* Set the destination address */
if (ifa->ifa_address != sin->sin_addr.s_addr) {
if (inet_abc_len(sin->sin_addr.s_addr) < 0) {
ret = -EINVAL;
break;
}
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_address = sin->sin_addr.s_addr;
inet_insert_ifa(ifa);
}
break;
case SIOCSIFNETMASK: /* Set the netmask for the interface */
/*
* The mask we set must be legal.
*/
if (bad_mask(sin->sin_addr.s_addr, 0)) {
ret = -EINVAL;
break;
}
if (ifa->ifa_mask != sin->sin_addr.s_addr) {
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_mask = sin->sin_addr.s_addr;
ifa->ifa_prefixlen = inet_mask_len(ifa->ifa_mask);
inet_insert_ifa(ifa);
}
break;
}
done:
rtnl_unlock();
dev_probe_unlock();
return ret;
rarok:
rtnl_unlock();
dev_probe_unlock();
if (copy_to_user(arg, &ifr, sizeof(struct ifreq)))
return -EFAULT;
return 0;
}
static int dev_ifsioc(void *arg, unsigned int getset)
{
struct ifreq ifr;
struct device *dev;
int ret;
/*
* Fetch the caller's info block into kernel space
*/
int err=verify_area(VERIFY_WRITE, arg, sizeof(struct ifreq));
if(err)
return err;
memcpy_fromfs(&ifr, arg, sizeof(struct ifreq));
/*
* See which interface the caller is talking about.
*/
if ((dev = dev_get(ifr.ifr_name)) == NULL)
return(-ENODEV);
switch(getset)
{
case SIOCGIFFLAGS: /* Get interface flags */
ifr.ifr_flags = dev->flags;
memcpy_tofs(arg, &ifr, sizeof(struct ifreq));
ret = 0;
break;
case SIOCSIFFLAGS: /* Set interface flags */
{
int old_flags = dev->flags;
#ifdef CONFIG_SLAVE_BALANCING
if(dev->flags&IFF_SLAVE)
return -EBUSY;
#endif
dev->flags = ifr.ifr_flags & (
IFF_UP | IFF_BROADCAST | IFF_DEBUG | IFF_LOOPBACK |
IFF_POINTOPOINT | IFF_NOTRAILERS | IFF_RUNNING |
IFF_NOARP | IFF_PROMISC | IFF_ALLMULTI | IFF_SLAVE | IFF_MASTER
| IFF_MULTICAST);
#ifdef CONFIG_SLAVE_BALANCING
if(!(dev->flags&IFF_MASTER) && dev->slave)
{
dev->slave->flags&=~IFF_SLAVE;
dev->slave=NULL;
}
#endif
/*
* Load in the correct multicast list now the flags have changed.
*/
dev_mc_upload(dev);
#if 0
if( dev->set_multicast_list!=NULL)
{
/*
* Has promiscuous mode been turned off
*/
if ( (old_flags & IFF_PROMISC) && ((dev->flags & IFF_PROMISC) == 0))
dev->set_multicast_list(dev,0,NULL);
/*
* Has it been turned on
*/
if ( (dev->flags & IFF_PROMISC) && ((old_flags & IFF_PROMISC) == 0))
dev->set_multicast_list(dev,-1,NULL);
}
#endif
/*
* Have we downed the interface
*/
if ((old_flags & IFF_UP) && ((dev->flags & IFF_UP) == 0))
{
ret = dev_close(dev);
}
else
{
/*
* Have we upped the interface
*/
ret = (! (old_flags & IFF_UP) && (dev->flags & IFF_UP))
? dev_open(dev) : 0;
/*
* Check the flags.
*/
if(ret<0)
dev->flags&=~IFF_UP; /* Didn't open so down the if */
}
}
break;
case SIOCGIFADDR: /* Get interface address (and family) */
(*(struct sockaddr_in *)
&ifr.ifr_addr).sin_addr.s_addr = dev->pa_addr;
(*(struct sockaddr_in *)
&ifr.ifr_addr).sin_family = dev->family;
(*(struct sockaddr_in *)
&ifr.ifr_addr).sin_port = 0;
memcpy_tofs(arg, &ifr, sizeof(struct ifreq));
ret = 0;
break;
case SIOCSIFADDR: /* Set interface address (and family) */
dev->pa_addr = (*(struct sockaddr_in *)
&ifr.ifr_addr).sin_addr.s_addr;
dev->family = ifr.ifr_addr.sa_family;
#ifdef CONFIG_INET
/* This is naughty. When net-032e comes out It wants moving into the net032
code not the kernel. Till then it can sit here (SIGH) */
dev->pa_mask = ip_get_mask(dev->pa_addr);
#endif
dev->pa_brdaddr = dev->pa_addr | ~dev->pa_mask;
ret = 0;
break;
case SIOCGIFBRDADDR: /* Get the broadcast address */
(*(struct sockaddr_in *)
&ifr.ifr_broadaddr).sin_addr.s_addr = dev->pa_brdaddr;
(*(struct sockaddr_in *)
&ifr.ifr_broadaddr).sin_family = dev->family;
(*(struct sockaddr_in *)
&ifr.ifr_broadaddr).sin_port = 0;
memcpy_tofs(arg, &ifr, sizeof(struct ifreq));
ret = 0;
break;
case SIOCSIFBRDADDR: /* Set the broadcast address */
dev->pa_brdaddr = (*(struct sockaddr_in *)
&ifr.ifr_broadaddr).sin_addr.s_addr;
ret = 0;
break;
case SIOCGIFDSTADDR: /* Get the destination address (for point-to-point links) */
(*(struct sockaddr_in *)
&ifr.ifr_dstaddr).sin_addr.s_addr = dev->pa_dstaddr;
(*(struct sockaddr_in *)
&ifr.ifr_broadaddr).sin_family = dev->family;
(*(struct sockaddr_in *)
&ifr.ifr_broadaddr).sin_port = 0;
memcpy_tofs(arg, &ifr, sizeof(struct ifreq));
ret = 0;
break;
case SIOCSIFDSTADDR: /* Set the destination address (for point-to-point links) */
dev->pa_dstaddr = (*(struct sockaddr_in *)
&ifr.ifr_dstaddr).sin_addr.s_addr;
ret = 0;
break;
case SIOCGIFNETMASK: /* Get the netmask for the interface */
(*(struct sockaddr_in *)
&ifr.ifr_netmask).sin_addr.s_addr = dev->pa_mask;
(*(struct sockaddr_in *)
&ifr.ifr_netmask).sin_family = dev->family;
(*(struct sockaddr_in *)
&ifr.ifr_netmask).sin_port = 0;
memcpy_tofs(arg, &ifr, sizeof(struct ifreq));
ret = 0;
break;
case SIOCSIFNETMASK: /* Set the netmask for the interface */
{
unsigned long mask = (*(struct sockaddr_in *)
&ifr.ifr_netmask).sin_addr.s_addr;
ret = -EINVAL;
/*
* The mask we set must be legal.
*/
if (bad_mask(mask,0))
break;
dev->pa_mask = mask;
ret = 0;
}
break;
case SIOCGIFMETRIC: /* Get the metric on the interface (currently unused) */
ifr.ifr_metric = dev->metric;
memcpy_tofs(arg, &ifr, sizeof(struct ifreq));
ret = 0;
break;
case SIOCSIFMETRIC: /* Set the metric on the interface (currently unused) */
dev->metric = ifr.ifr_metric;
ret = 0;
break;
case SIOCGIFMTU: /* Get the MTU of a device */
ifr.ifr_mtu = dev->mtu;
memcpy_tofs(arg, &ifr, sizeof(struct ifreq));
ret = 0;
break;
case SIOCSIFMTU: /* Set the MTU of a device */
/*
* MTU must be positive and under the page size problem
*/
if(ifr.ifr_mtu<1 || ifr.ifr_mtu>3800)
return -EINVAL;
dev->mtu = ifr.ifr_mtu;
ret = 0;
break;
case SIOCGIFMEM: /* Get the per device memory space. We can add this but currently
do not support it */
printk("NET: ioctl(SIOCGIFMEM, %p)\n", arg);
ret = -EINVAL;
break;
case SIOCSIFMEM: /* Set the per device memory buffer space. Not applicable in our case */
printk("NET: ioctl(SIOCSIFMEM, %p)\n", arg);
ret = -EINVAL;
break;
case OLD_SIOCGIFHWADDR: /* Get the hardware address. This will change and SIFHWADDR will be added */
memcpy(ifr.old_ifr_hwaddr,dev->dev_addr, MAX_ADDR_LEN);
memcpy_tofs(arg,&ifr,sizeof(struct ifreq));
ret=0;
break;
case SIOCGIFHWADDR:
memcpy(ifr.ifr_hwaddr.sa_data,dev->dev_addr, MAX_ADDR_LEN);
ifr.ifr_hwaddr.sa_family=dev->type;
memcpy_tofs(arg,&ifr,sizeof(struct ifreq));
ret=0;
break;
case SIOCSIFHWADDR:
if(dev->set_mac_address==NULL)
return -EOPNOTSUPP;
if(ifr.ifr_hwaddr.sa_family!=dev->type)
return -EINVAL;
ret=dev->set_mac_address(dev,ifr.ifr_hwaddr.sa_data);
break;
case SIOCGIFMAP:
ifr.ifr_map.mem_start=dev->mem_start;
ifr.ifr_map.mem_end=dev->mem_end;
ifr.ifr_map.base_addr=dev->base_addr;
ifr.ifr_map.irq=dev->irq;
ifr.ifr_map.dma=dev->dma;
ifr.ifr_map.port=dev->if_port;
memcpy_tofs(arg,&ifr,sizeof(struct ifreq));
ret=0;
break;
case SIOCSIFMAP:
if(dev->set_config==NULL)
return -EOPNOTSUPP;
return dev->set_config(dev,&ifr.ifr_map);
case SIOCGIFSLAVE:
#ifdef CONFIG_SLAVE_BALANCING
if(dev->slave==NULL)
return -ENOENT;
strncpy(ifr.ifr_name,dev->name,sizeof(ifr.ifr_name));
memcpy_tofs(arg,&ifr,sizeof(struct ifreq));
ret=0;
#else
return -ENOENT;
#endif
break;
#ifdef CONFIG_SLAVE_BALANCING
case SIOCSIFSLAVE:
{
/*
* Fun game. Get the device up and the flags right without
* letting some scummy user confuse us.
*/
unsigned long flags;
struct device *slave=dev_get(ifr.ifr_slave);
save_flags(flags);
if(slave==NULL)
{
return -ENODEV;
}
cli();
if((slave->flags&(IFF_UP|IFF_RUNNING))!=(IFF_UP|IFF_RUNNING))
{
restore_flags(flags);
return -EINVAL;
}
if(dev->flags&IFF_SLAVE)
{
restore_flags(flags);
return -EBUSY;
}
if(dev->slave!=NULL)
{
restore_flags(flags);
return -EBUSY;
}
if(slave->flags&IFF_SLAVE)
{
restore_flags(flags);
return -EBUSY;
}
dev->slave=slave;
slave->flags|=IFF_SLAVE;
dev->flags|=IFF_MASTER;
restore_flags(flags);
ret=0;
}
break;
#endif
case SIOCADDMULTI:
if(dev->set_multicast_list==NULL)
return -EINVAL;
if(ifr.ifr_hwaddr.sa_family!=AF_UNSPEC)
return -EINVAL;
dev_mc_add(dev,ifr.ifr_hwaddr.sa_data, dev->addr_len, 1);
return 0;
case SIOCDELMULTI:
if(dev->set_multicast_list==NULL)
return -EINVAL;
if(ifr.ifr_hwaddr.sa_family!=AF_UNSPEC)
return -EINVAL;
dev_mc_delete(dev,ifr.ifr_hwaddr.sa_data,dev->addr_len, 1);
return 0;
/*
* Unknown or private ioctl
*/
default:
if((getset >= SIOCDEVPRIVATE) &&
(getset <= (SIOCDEVPRIVATE + 15))) {
if(dev->do_ioctl==NULL)
return -EOPNOTSUPP;
ret=dev->do_ioctl(dev, &ifr, getset);
memcpy_tofs(arg,&ifr,sizeof(struct ifreq));
break;
}
ret = -EINVAL;
}
return(ret);
}
static int dev_ifsioc(void *arg, unsigned int getset)
{
struct ifreq ifr;
struct device *dev;
int ret;
/*
* Fetch the caller's info block into kernel space
*/
int err=verify_area(VERIFY_WRITE, arg, sizeof(struct ifreq));
if(err)
return err;
memcpy_fromfs(&ifr, arg, sizeof(struct ifreq));
/*
* See which interface the caller is talking about.
*/
/*
*
* net_alias_dev_get(): dev_get() with added alias naming magic.
* only allow alias creation/deletion if (getset==SIOCSIFADDR)
*
*/
#ifdef CONFIG_KERNELD
dev_load(ifr.ifr_name);
#endif
#ifdef CONFIG_NET_ALIAS
if ((dev = net_alias_dev_get(ifr.ifr_name, getset == SIOCSIFADDR, &err, NULL, NULL)) == NULL)
return(err);
#else
if ((dev = dev_get(ifr.ifr_name)) == NULL)
return(-ENODEV);
#endif
switch(getset)
{
case SIOCGIFFLAGS: /* Get interface flags */
ifr.ifr_flags = (dev->flags & ~IFF_SOFTHEADERS);
goto rarok;
case SIOCSIFFLAGS: /* Set interface flags */
{
int old_flags = dev->flags;
if(securelevel>0)
ifr.ifr_flags&=~IFF_PROMISC;
/*
* We are not allowed to potentially close/unload
* a device until we get this lock.
*/
dev_lock_wait();
/*
* Set the flags on our device.
*/
dev->flags = (ifr.ifr_flags & (
IFF_BROADCAST | IFF_DEBUG | IFF_LOOPBACK |
IFF_POINTOPOINT | IFF_NOTRAILERS | IFF_RUNNING |
IFF_NOARP | IFF_PROMISC | IFF_ALLMULTI | IFF_SLAVE | IFF_MASTER
| IFF_MULTICAST)) | (dev->flags & (IFF_SOFTHEADERS|IFF_UP));
/*
* Load in the correct multicast list now the flags have changed.
*/
dev_mc_upload(dev);
/*
* Have we downed the interface. We handle IFF_UP ourselves
* according to user attempts to set it, rather than blindly
* setting it.
*/
if ((old_flags^ifr.ifr_flags)&IFF_UP) /* Bit is different ? */
{
if(old_flags&IFF_UP) /* Gone down */
ret=dev_close(dev);
else /* Come up */
{
ret=dev_open(dev);
if(ret<0)
dev->flags&=~IFF_UP; /* Open failed */
}
}
else
ret=0;
/*
* Load in the correct multicast list now the flags have changed.
*/
dev_mc_upload(dev);
}
break;
case SIOCGIFADDR: /* Get interface address (and family) */
if(ifr.ifr_addr.sa_family==AF_UNSPEC)
{
memcpy(ifr.ifr_hwaddr.sa_data,dev->dev_addr, MAX_ADDR_LEN);
ifr.ifr_hwaddr.sa_family=dev->type;
goto rarok;
}
else
{
(*(struct sockaddr_in *)
&ifr.ifr_addr).sin_addr.s_addr = dev->pa_addr;
(*(struct sockaddr_in *)
&ifr.ifr_addr).sin_family = dev->family;
(*(struct sockaddr_in *)
&ifr.ifr_addr).sin_port = 0;
}
goto rarok;
case SIOCSIFADDR: /* Set interface address (and family) */
/*
* BSDism. SIOCSIFADDR family=AF_UNSPEC sets the
* physical address. We can cope with this now.
*/
if(ifr.ifr_addr.sa_family==AF_UNSPEC)
{
if(dev->set_mac_address==NULL)
return -EOPNOTSUPP;
if(securelevel>0)
return -EPERM;
ret=dev->set_mac_address(dev,&ifr.ifr_addr);
}
else
{
u32 new_pa_addr = (*(struct sockaddr_in *)
&ifr.ifr_addr).sin_addr.s_addr;
u16 new_family = ifr.ifr_addr.sa_family;
if (new_family == dev->family &&
new_pa_addr == dev->pa_addr) {
ret =0;
break;
}
if (dev->flags & IFF_UP)
notifier_call_chain(&netdev_chain, NETDEV_DOWN, dev);
/*
* if dev is an alias, must rehash to update
* address change
*/
#ifdef CONFIG_NET_ALIAS
if (net_alias_is(dev))
net_alias_dev_rehash(dev ,&ifr.ifr_addr);
#endif
dev->pa_addr = new_pa_addr;
dev->family = new_family;
#ifdef CONFIG_INET
/* This is naughty. When net-032e comes out It wants moving into the net032
code not the kernel. Till then it can sit here (SIGH) */
if (!dev->pa_mask)
dev->pa_mask = ip_get_mask(dev->pa_addr);
#endif
if (!dev->pa_brdaddr)
dev->pa_brdaddr = dev->pa_addr | ~dev->pa_mask;
if (dev->flags & IFF_UP)
notifier_call_chain(&netdev_chain, NETDEV_UP, dev);
ret = 0;
}
break;
case SIOCGIFBRDADDR: /* Get the broadcast address */
(*(struct sockaddr_in *)
&ifr.ifr_broadaddr).sin_addr.s_addr = dev->pa_brdaddr;
(*(struct sockaddr_in *)
&ifr.ifr_broadaddr).sin_family = dev->family;
(*(struct sockaddr_in *)
&ifr.ifr_broadaddr).sin_port = 0;
goto rarok;
case SIOCSIFBRDADDR: /* Set the broadcast address */
dev->pa_brdaddr = (*(struct sockaddr_in *)
&ifr.ifr_broadaddr).sin_addr.s_addr;
ret = 0;
break;
case SIOCGIFDSTADDR: /* Get the destination address (for point-to-point links) */
(*(struct sockaddr_in *)
&ifr.ifr_dstaddr).sin_addr.s_addr = dev->pa_dstaddr;
(*(struct sockaddr_in *)
&ifr.ifr_dstaddr).sin_family = dev->family;
(*(struct sockaddr_in *)
&ifr.ifr_dstaddr).sin_port = 0;
goto rarok;
case SIOCSIFDSTADDR: /* Set the destination address (for point-to-point links) */
dev->pa_dstaddr = (*(struct sockaddr_in *)
&ifr.ifr_dstaddr).sin_addr.s_addr;
ret = 0;
break;
case SIOCGIFNETMASK: /* Get the netmask for the interface */
(*(struct sockaddr_in *)
&ifr.ifr_netmask).sin_addr.s_addr = dev->pa_mask;
(*(struct sockaddr_in *)
&ifr.ifr_netmask).sin_family = dev->family;
(*(struct sockaddr_in *)
&ifr.ifr_netmask).sin_port = 0;
goto rarok;
case SIOCSIFNETMASK: /* Set the netmask for the interface */
{
unsigned long mask = (*(struct sockaddr_in *)
&ifr.ifr_netmask).sin_addr.s_addr;
ret = -EINVAL;
/*
* The mask we set must be legal.
*/
if (bad_mask(mask,0))
break;
dev->pa_mask = mask;
ret = 0;
}
break;
case SIOCGIFMETRIC: /* Get the metric on the interface (currently unused) */
ifr.ifr_metric = dev->metric;
goto rarok;
case SIOCSIFMETRIC: /* Set the metric on the interface (currently unused) */
dev->metric = ifr.ifr_metric;
ret=0;
break;
case SIOCGIFMTU: /* Get the MTU of a device */
ifr.ifr_mtu = dev->mtu;
goto rarok;
case SIOCSIFMTU: /* Set the MTU of a device */
if (dev->change_mtu)
ret = dev->change_mtu(dev, ifr.ifr_mtu);
else
{
/*
* MTU must be positive.
*/
if(ifr.ifr_mtu<68)
return -EINVAL;
dev->mtu = ifr.ifr_mtu;
ret = 0;
}
break;
case SIOCGIFMEM: /* Get the per device memory space. We can add this but currently
do not support it */
ret = -EINVAL;
break;
case SIOCSIFMEM: /* Set the per device memory buffer space. Not applicable in our case */
ret = -EINVAL;
break;
case SIOCGIFHWADDR:
memcpy(ifr.ifr_hwaddr.sa_data,dev->dev_addr, MAX_ADDR_LEN);
ifr.ifr_hwaddr.sa_family=dev->type;
goto rarok;
case SIOCSIFHWADDR:
if(dev->set_mac_address==NULL)
return -EOPNOTSUPP;
if(securelevel > 0)
return -EPERM;
if(ifr.ifr_hwaddr.sa_family!=dev->type)
return -EINVAL;
ret=dev->set_mac_address(dev,&ifr.ifr_hwaddr);
break;
case SIOCGIFMAP:
ifr.ifr_map.mem_start=dev->mem_start;
ifr.ifr_map.mem_end=dev->mem_end;
ifr.ifr_map.base_addr=dev->base_addr;
ifr.ifr_map.irq=dev->irq;
ifr.ifr_map.dma=dev->dma;
ifr.ifr_map.port=dev->if_port;
goto rarok;
case SIOCSIFMAP:
if(dev->set_config==NULL)
return -EOPNOTSUPP;
return dev->set_config(dev,&ifr.ifr_map);
case SIOCADDMULTI:
if(dev->set_multicast_list==NULL)
return -EINVAL;
if(ifr.ifr_hwaddr.sa_family!=AF_UNSPEC)
return -EINVAL;
dev_mc_add(dev,ifr.ifr_hwaddr.sa_data, dev->addr_len, 1);
return 0;
case SIOCDELMULTI:
if(dev->set_multicast_list==NULL)
return -EINVAL;
if(ifr.ifr_hwaddr.sa_family!=AF_UNSPEC)
return -EINVAL;
dev_mc_delete(dev,ifr.ifr_hwaddr.sa_data,dev->addr_len, 1);
return 0;
/*
* Unknown or private ioctl
*/
default:
if((getset >= SIOCDEVPRIVATE) &&
(getset <= (SIOCDEVPRIVATE + 15))) {
if(dev->do_ioctl==NULL)
return -EOPNOTSUPP;
ret=dev->do_ioctl(dev, &ifr, getset);
memcpy_tofs(arg,&ifr,sizeof(struct ifreq));
break;
}
#ifdef CONFIG_NET_RADIO
if((getset >= SIOCIWFIRST) &&
(getset <= SIOCIWLAST))
{
if(dev->do_ioctl==NULL)
return -EOPNOTSUPP;
/* Perform the ioctl */
ret=dev->do_ioctl(dev, &ifr, getset);
/* If return args... */
if(IW_IS_GET(getset))
memcpy_tofs(arg, &ifr,
sizeof(struct ifreq));
break;
}
#endif /* CONFIG_NET_RADIO */
ret = -EINVAL;
}
return(ret);
/*
* The load of calls that return an ifreq and ok (saves memory).
*/
rarok:
memcpy_tofs(arg, &ifr, sizeof(struct ifreq));
return 0;
}