#include <asm/uaccess.h>
#include <asm/system.h>
#include <linux/bitops.h>
+#include <linux/capability.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#endif
#include <linux/kmod.h>
+#include <net/arp.h>
#include <net/ip.h>
#include <net/route.h>
#include <net/ip_fib.h>
static void rtmsg_ifa(int event, struct in_ifaddr *);
-static struct notifier_block *inetaddr_chain;
+static BLOCKING_NOTIFIER_HEAD(inetaddr_chain);
static void inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap,
int destroy);
#ifdef CONFIG_SYSCTL
int destroy)
{
struct in_ifaddr *promote = NULL;
- struct in_ifaddr *ifa1 = *ifap;
+ struct in_ifaddr *ifa, *ifa1 = *ifap;
+ struct in_ifaddr *last_prim = in_dev->ifa_list;
+ struct in_ifaddr *prev_prom = NULL;
+ int do_promote = IN_DEV_PROMOTE_SECONDARIES(in_dev);
ASSERT_RTNL();
**/
if (!(ifa1->ifa_flags & IFA_F_SECONDARY)) {
- struct in_ifaddr *ifa;
struct in_ifaddr **ifap1 = &ifa1->ifa_next;
while ((ifa = *ifap1) != NULL) {
+ if (!(ifa->ifa_flags & IFA_F_SECONDARY) &&
+ ifa1->ifa_scope <= ifa->ifa_scope)
+ last_prim = ifa;
+
if (!(ifa->ifa_flags & IFA_F_SECONDARY) ||
ifa1->ifa_mask != ifa->ifa_mask ||
!inet_ifa_match(ifa1->ifa_address, ifa)) {
ifap1 = &ifa->ifa_next;
+ prev_prom = ifa;
continue;
}
- if (!IN_DEV_PROMOTE_SECONDARIES(in_dev)) {
+ if (!do_promote) {
*ifap1 = ifa->ifa_next;
rtmsg_ifa(RTM_DELADDR, ifa);
- notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa);
+ blocking_notifier_call_chain(&inetaddr_chain,
+ NETDEV_DOWN, ifa);
inet_free_ifa(ifa);
} else {
promote = ifa;
So that, this order is correct.
*/
rtmsg_ifa(RTM_DELADDR, ifa1);
- notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa1);
+ blocking_notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa1);
+
+ if (promote) {
+
+ if (prev_prom) {
+ prev_prom->ifa_next = promote->ifa_next;
+ promote->ifa_next = last_prim->ifa_next;
+ last_prim->ifa_next = promote;
+ }
+
+ promote->ifa_flags &= ~IFA_F_SECONDARY;
+ rtmsg_ifa(RTM_NEWADDR, promote);
+ blocking_notifier_call_chain(&inetaddr_chain,
+ NETDEV_UP, promote);
+ for (ifa = promote->ifa_next; ifa; ifa = ifa->ifa_next) {
+ if (ifa1->ifa_mask != ifa->ifa_mask ||
+ !inet_ifa_match(ifa1->ifa_address, ifa))
+ continue;
+ fib_add_ifaddr(ifa);
+ }
+
+ }
if (destroy) {
inet_free_ifa(ifa1);
if (!in_dev->ifa_list)
inetdev_destroy(in_dev);
}
-
- if (promote && IN_DEV_PROMOTE_SECONDARIES(in_dev)) {
- /* not sure if we should send a delete notify first? */
- promote->ifa_flags &= ~IFA_F_SECONDARY;
- rtmsg_ifa(RTM_NEWADDR, promote);
- notifier_call_chain(&inetaddr_chain, NETDEV_UP, promote);
- }
}
static int inet_insert_ifa(struct in_ifaddr *ifa)
Notifier will trigger FIB update, so that
listeners of netlink will know about new ifaddr */
rtmsg_ifa(RTM_NEWADDR, ifa);
- notifier_call_chain(&inetaddr_chain, NETDEV_UP, ifa);
+ blocking_notifier_call_chain(&inetaddr_chain, NETDEV_UP, ifa);
return 0;
}
static int inet_set_ifa(struct net_device *dev, struct in_ifaddr *ifa)
{
- struct in_device *in_dev = __in_dev_get(dev);
+ struct in_device *in_dev = __in_dev_get_rtnl(dev);
ASSERT_RTNL();
goto out;
rc = -ENOBUFS;
- if ((in_dev = __in_dev_get(dev)) == NULL) {
+ if ((in_dev = __in_dev_get_rtnl(dev)) == NULL) {
in_dev = inetdev_init(dev);
if (!in_dev)
goto out;
return rc;
}
-/*
- Check that a device is not member of the ipv4root assigned to the process
- Return true if this is the case
-
- If the process is not bound to specific IP, then it returns 0 (all
- interface are fine).
-*/
-static inline int devinet_notiproot (struct in_ifaddr *ifa)
-{
- int ret = 0;
- struct nx_info *nxi;
-
- if ((nxi = current->nx_info)) {
- int i;
- int nbip = nxi->nbipv4;
- __u32 addr = ifa->ifa_local;
- ret = 1;
- for (i=0; i<nbip; i++) {
- if(nxi->ipv4[i] == addr) {
- ret = 0;
- break;
- }
- }
- }
- return ret;
-}
-
int devinet_ioctl(unsigned int cmd, void __user *arg)
{
if (colon)
*colon = ':';
- if ((in_dev = __in_dev_get(dev)) != NULL) {
+ if ((in_dev = __in_dev_get_rtnl(dev)) != NULL) {
+ struct nx_info *nxi = current->nx_info;
+ int hide_netif = vx_flags(VXF_HIDE_NETIF, 0);
+
if (tryaddrmatch) {
/* Matthias Andree */
/* compare label and address (4.4BSD style) */
This is checked above. */
for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
ifap = &ifa->ifa_next) {
+ if (hide_netif && !ifa_in_nx_info(ifa, nxi))
+ continue;
if (!strcmp(ifr.ifr_name, ifa->ifa_label) &&
sin_orig.sin_addr.s_addr ==
ifa->ifa_address) {
comparing just the label */
if (!ifa) {
for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
- ifap = &ifa->ifa_next)
+ ifap = &ifa->ifa_next) {
+ if (hide_netif && !ifa_in_nx_info(ifa, nxi))
+ continue;
if (!strcmp(ifr.ifr_name, ifa->ifa_label))
break;
+ }
}
}
ret = -EADDRNOTAVAIL;
if (!ifa && cmd != SIOCSIFADDR && cmd != SIOCSIFFLAGS)
goto done;
- if (vx_flags(VXF_HIDE_NETIF, 0) &&
- !ifa_in_nx_info(ifa, current->nx_info))
- goto done;
switch(cmd) {
case SIOCGIFADDR: /* Get interface address */
break;
ret = 0;
if (ifa->ifa_mask != sin->sin_addr.s_addr) {
+ u32 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);
if ((dev->flags & IFF_BROADCAST) &&
(ifa->ifa_prefixlen < 31) &&
(ifa->ifa_broadcast ==
- (ifa->ifa_local|~ifa->ifa_mask))) {
+ (ifa->ifa_local|~old_mask))) {
ifa->ifa_broadcast = (ifa->ifa_local |
~sin->sin_addr.s_addr);
}
static int inet_gifconf(struct net_device *dev, char __user *buf, int len)
{
- struct in_device *in_dev = __in_dev_get(dev);
+ struct in_device *in_dev = __in_dev_get_rtnl(dev);
struct in_ifaddr *ifa;
struct ifreq ifr;
int done = 0;
struct in_device *in_dev;
rcu_read_lock();
- in_dev = __in_dev_get(dev);
+ in_dev = __in_dev_get_rcu(dev);
if (!in_dev)
goto no_in_dev;
read_lock(&dev_base_lock);
rcu_read_lock();
for (dev = dev_base; dev; dev = dev->next) {
- if ((in_dev = __in_dev_get(dev)) == NULL)
+ if ((in_dev = __in_dev_get_rcu(dev)) == NULL)
continue;
for_primary_ifa(in_dev) {
if (dev) {
rcu_read_lock();
- if ((in_dev = __in_dev_get(dev)))
+ if ((in_dev = __in_dev_get_rcu(dev)))
addr = confirm_addr_indev(in_dev, dst, local, scope);
rcu_read_unlock();
read_lock(&dev_base_lock);
rcu_read_lock();
for (dev = dev_base; dev; dev = dev->next) {
- if ((in_dev = __in_dev_get(dev))) {
+ if ((in_dev = __in_dev_get_rcu(dev))) {
addr = confirm_addr_indev(in_dev, dst, local, scope);
if (addr)
break;
int register_inetaddr_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&inetaddr_chain, nb);
+ return blocking_notifier_chain_register(&inetaddr_chain, nb);
}
int unregister_inetaddr_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&inetaddr_chain, nb);
+ return blocking_notifier_chain_unregister(&inetaddr_chain, nb);
}
/* Rename ifa_labels for a device name change. Make some effort to preserve existing
void *ptr)
{
struct net_device *dev = ptr;
- struct in_device *in_dev = __in_dev_get(dev);
+ struct in_device *in_dev = __in_dev_get_rtnl(dev);
ASSERT_RTNL();
};
static int inet_fill_ifaddr(struct sk_buff *skb, struct in_ifaddr *ifa,
- u32 pid, u32 seq, int event)
+ u32 pid, u32 seq, int event, unsigned int flags)
{
struct ifaddrmsg *ifm;
struct nlmsghdr *nlh;
unsigned char *b = skb->tail;
- nlh = NLMSG_PUT(skb, pid, seq, event, sizeof(*ifm));
- if (pid) nlh->nlmsg_flags |= NLM_F_MULTI;
+ nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*ifm), flags);
ifm = NLMSG_DATA(nlh);
ifm->ifa_family = AF_INET;
ifm->ifa_prefixlen = ifa->ifa_prefixlen;
if (idx > s_idx)
s_ip_idx = 0;
rcu_read_lock();
- if ((in_dev = __in_dev_get(dev)) == NULL) {
+ if ((in_dev = __in_dev_get_rcu(dev)) == NULL) {
rcu_read_unlock();
continue;
}
continue;
if (inet_fill_ifaddr(skb, ifa, NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq,
- RTM_NEWADDR) <= 0) {
+ RTM_NEWADDR, NLM_F_MULTI) <= 0) {
rcu_read_unlock();
goto done;
}
struct sk_buff *skb = alloc_skb(size, GFP_KERNEL);
if (!skb)
- netlink_set_err(rtnl, 0, RTMGRP_IPV4_IFADDR, ENOBUFS);
- else if (inet_fill_ifaddr(skb, ifa, 0, 0, event) < 0) {
+ netlink_set_err(rtnl, 0, RTNLGRP_IPV4_IFADDR, ENOBUFS);
+ else if (inet_fill_ifaddr(skb, ifa, 0, 0, event, 0) < 0) {
kfree_skb(skb);
- netlink_set_err(rtnl, 0, RTMGRP_IPV4_IFADDR, EINVAL);
+ netlink_set_err(rtnl, 0, RTNLGRP_IPV4_IFADDR, EINVAL);
} else {
- NETLINK_CB(skb).dst_groups = RTMGRP_IPV4_IFADDR;
- netlink_broadcast(rtnl, skb, 0, RTMGRP_IPV4_IFADDR, GFP_KERNEL);
+ netlink_broadcast(rtnl, skb, 0, RTNLGRP_IPV4_IFADDR, GFP_KERNEL);
}
}
for (dev = dev_base; dev; dev = dev->next) {
struct in_device *in_dev;
rcu_read_lock();
- in_dev = __in_dev_get(dev);
+ in_dev = __in_dev_get_rcu(dev);
if (in_dev)
in_dev->cnf.forwarding = on;
rcu_read_unlock();
.mode = 0644,
.proc_handler = &proc_dointvec,
},
+ {
+ .ctl_name = NET_IPV4_CONF_ARP_ACCEPT,
+ .procname = "arp_accept",
+ .data = &ipv4_devconf.arp_accept,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
{
.ctl_name = NET_IPV4_CONF_NOXFRM,
.procname = "disable_xfrm",
* by sysctl and we wouldn't want anyone to change it under our feet
* (see SIOCSIFNAME).
*/
- dev_name = net_sysctl_strdup(dev_name);
+ dev_name = kstrdup(dev_name, GFP_KERNEL);
if (!dev_name)
goto free;
#endif
}
-EXPORT_SYMBOL(devinet_ioctl);
EXPORT_SYMBOL(in_dev_finish_destroy);
EXPORT_SYMBOL(inet_select_addr);
EXPORT_SYMBOL(inetdev_by_index);
git://git.onelab.eu / linux-2.6.git / blobdiff