#include <linux/errno.h>
#include <linux/types.h>
+#include <linux/kernel.h>
#include <linux/socket.h>
#include <linux/sockios.h>
#include <linux/net.h>
read_unlock(&dev_base_lock);
}
-static void addrconf_fixup_forwarding(struct ctl_table *table, int *p, int old)
+static int addrconf_fixup_forwarding(struct ctl_table *table, int *p, int old)
{
struct net *net;
net = (struct net *)table->extra2;
if (p == &net->ipv6.devconf_dflt->forwarding)
- return;
+ return 0;
+
+ if (!rtnl_trylock())
+ return -ERESTARTSYS;
- rtnl_lock();
if (p == &net->ipv6.devconf_all->forwarding) {
__s32 newf = net->ipv6.devconf_all->forwarding;
net->ipv6.devconf_dflt->forwarding = newf;
if (*p)
rt6_purge_dflt_routers(net);
+ return 1;
}
#endif
{
struct inet6_ifaddr *ifa = NULL;
struct rt6_info *rt;
+ struct net *net = dev_net(idev->dev);
int hash;
int err = 0;
int addr_type = ipv6_addr_type(addr);
goto out2;
}
+ if (idev->cnf.disable_ipv6 || net->ipv6.devconf_all->disable_ipv6) {
+ err = -EACCES;
+ goto out2;
+ }
+
write_lock(&addrconf_hash_lock);
/* Ignore adding duplicate addresses on an interface */
}
break;
} else if (minihiscore < miniscore) {
- struct ipv6_saddr_score *tmp;
-
if (hiscore->ifa)
in6_ifa_put(hiscore->ifa);
in6_ifa_hold(score->ifa);
- tmp = hiscore;
- hiscore = score;
- score = tmp;
+ swap(hiscore, score);
/* restore our iterator */
score->ifa = hiscore->ifa;
return ifp;
}
-int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2)
-{
- const struct in6_addr *sk_rcv_saddr6 = &inet6_sk(sk)->rcv_saddr;
- const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2);
- __be32 sk_rcv_saddr = inet_sk(sk)->rcv_saddr;
- __be32 sk2_rcv_saddr = inet_rcv_saddr(sk2);
- int sk_ipv6only = ipv6_only_sock(sk);
- int sk2_ipv6only = inet_v6_ipv6only(sk2);
- int addr_type = ipv6_addr_type(sk_rcv_saddr6);
- int addr_type2 = sk2_rcv_saddr6 ? ipv6_addr_type(sk2_rcv_saddr6) : IPV6_ADDR_MAPPED;
-
- if (!sk2_rcv_saddr && !sk_ipv6only)
- return 1;
-
- if (addr_type2 == IPV6_ADDR_ANY &&
- !(sk2_ipv6only && addr_type == IPV6_ADDR_MAPPED))
- return 1;
-
- if (addr_type == IPV6_ADDR_ANY &&
- !(sk_ipv6only && addr_type2 == IPV6_ADDR_MAPPED))
- return 1;
-
- if (sk2_rcv_saddr6 &&
- ipv6_addr_equal(sk_rcv_saddr6, sk2_rcv_saddr6))
- return 1;
-
- if (addr_type == IPV6_ADDR_MAPPED &&
- !sk2_ipv6only &&
- (!sk2_rcv_saddr || !sk_rcv_saddr || sk_rcv_saddr == sk2_rcv_saddr))
- return 1;
-
- return 0;
-}
-
/* Gets referenced address, destroys ifaddr */
static void addrconf_dad_stop(struct inet6_ifaddr *ifp)
void addrconf_dad_failure(struct inet6_ifaddr *ifp)
{
struct inet6_dev *idev = ifp->idev;
+
+ if (net_ratelimit())
+ printk(KERN_INFO "%s: IPv6 duplicate address detected!\n",
+ ifp->idev->dev->name);
+
if (idev->cnf.accept_dad > 1 && !idev->cnf.disable_ipv6) {
struct in6_addr addr;
ipv6_addr_equal(&ifp->addr, &addr)) {
/* DAD failed for link-local based on MAC address */
idev->cnf.disable_ipv6 = 1;
+
+ printk(KERN_INFO "%s: IPv6 being disabled!\n",
+ ifp->idev->dev->name);
}
}
- if (net_ratelimit())
- printk(KERN_INFO "%s: duplicate address detected!\n", ifp->idev->dev->name);
addrconf_dad_stop(ifp);
}
.fc_dst_len = plen,
.fc_flags = RTF_UP | flags,
.fc_nlinfo.nl_net = dev_net(dev),
+ .fc_protocol = RTPROT_KERNEL,
};
ipv6_addr_copy(&cfg.fc_dst, pfx);
#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
if (dev->type == ARPHRD_SIT) {
+ const struct net_device_ops *ops = dev->netdev_ops;
struct ifreq ifr;
- mm_segment_t oldfs;
struct ip_tunnel_parm p;
err = -EADDRNOTAVAIL;
p.iph.ttl = 64;
ifr.ifr_ifru.ifru_data = (__force void __user *)&p;
- oldfs = get_fs(); set_fs(KERNEL_DS);
- err = dev->do_ioctl(dev, &ifr, SIOCADDTUNNEL);
- set_fs(oldfs);
+ if (ops->ndo_do_ioctl) {
+ mm_segment_t oldfs = get_fs();
+
+ set_fs(KERNEL_DS);
+ err = ops->ndo_do_ioctl(dev, &ifr, SIOCADDTUNNEL);
+ set_fs(oldfs);
+ } else
+ err = -EOPNOTSUPP;
if (err == 0) {
err = -ENOBUFS;
return err;
}
+static void add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
+ int plen, int scope)
+{
+ struct inet6_ifaddr *ifp;
+
+ ifp = ipv6_add_addr(idev, addr, plen, scope, IFA_F_PERMANENT);
+ if (!IS_ERR(ifp)) {
+ spin_lock_bh(&ifp->lock);
+ ifp->flags &= ~IFA_F_TENTATIVE;
+ spin_unlock_bh(&ifp->lock);
+ ipv6_ifa_notify(RTM_NEWADDR, ifp);
+ in6_ifa_put(ifp);
+ }
+}
+
#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
static void sit_add_v4_addrs(struct inet6_dev *idev)
{
- struct inet6_ifaddr * ifp;
struct in6_addr addr;
struct net_device *dev;
struct net *net = dev_net(idev->dev);
}
if (addr.s6_addr32[3]) {
- ifp = ipv6_add_addr(idev, &addr, 128, scope, IFA_F_PERMANENT);
- if (!IS_ERR(ifp)) {
- spin_lock_bh(&ifp->lock);
- ifp->flags &= ~IFA_F_TENTATIVE;
- spin_unlock_bh(&ifp->lock);
- ipv6_ifa_notify(RTM_NEWADDR, ifp);
- in6_ifa_put(ifp);
- }
+ add_addr(idev, &addr, 128, scope);
return;
}
else
plen = 96;
- ifp = ipv6_add_addr(idev, &addr, plen, flag,
- IFA_F_PERMANENT);
- if (!IS_ERR(ifp)) {
- spin_lock_bh(&ifp->lock);
- ifp->flags &= ~IFA_F_TENTATIVE;
- spin_unlock_bh(&ifp->lock);
- ipv6_ifa_notify(RTM_NEWADDR, ifp);
- in6_ifa_put(ifp);
- }
+ add_addr(idev, &addr, plen, flag);
}
}
}
static void init_loopback(struct net_device *dev)
{
struct inet6_dev *idev;
- struct inet6_ifaddr * ifp;
/* ::1 */
return;
}
- ifp = ipv6_add_addr(idev, &in6addr_loopback, 128, IFA_HOST, IFA_F_PERMANENT);
- if (!IS_ERR(ifp)) {
- spin_lock_bh(&ifp->lock);
- ifp->flags &= ~IFA_F_TENTATIVE;
- spin_unlock_bh(&ifp->lock);
- ipv6_ifa_notify(RTM_NEWADDR, ifp);
- in6_ifa_put(ifp);
- }
+ add_addr(idev, &in6addr_loopback, 128, IFA_HOST);
}
static void addrconf_add_linklocal(struct inet6_dev *idev, struct in6_addr *addr)
if (!idev && dev->mtu >= IPV6_MIN_MTU)
idev = ipv6_add_dev(dev);
- if (idev)
+ if (idev) {
idev->if_flags |= IF_READY;
+ run_pending = 1;
+ }
} else {
if (!addrconf_qdisc_ok(dev)) {
/* device is still not ready. */
ASSERT_RTNL();
- if ((dev->flags & IFF_LOOPBACK) && how == 1)
- how = 0;
-
rt6_ifdown(net, dev);
neigh_ifdown(&nd_tbl, dev);
read_unlock_bh(&idev->lock);
goto out;
}
- if (idev->cnf.accept_dad > 1 && idev->cnf.disable_ipv6) {
- read_unlock_bh(&idev->lock);
- addrconf_dad_failure(ifp);
- return;
- }
spin_lock_bh(&ifp->lock);
if (ifp->probes == 0) {
/*
static int if6_seq_show(struct seq_file *seq, void *v)
{
struct inet6_ifaddr *ifp = (struct inet6_ifaddr *)v;
- seq_printf(seq,
- NIP6_SEQFMT " %02x %02x %02x %02x %8s\n",
- NIP6(ifp->addr),
+ seq_printf(seq, "%pi6 %02x %02x %02x %02x %8s\n",
+ &ifp->addr,
ifp->idev->dev->ifindex,
ifp->prefix_len,
ifp->scope,
kfree_skb(skb);
goto errout;
}
- err = rtnl_notify(skb, net, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC);
+ rtnl_notify(skb, net, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC);
+ return;
errout:
if (err < 0)
rtnl_set_sk_err(net, RTNLGRP_IPV6_IFADDR, err);
kfree_skb(skb);
goto errout;
}
- err = rtnl_notify(skb, net, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC);
+ rtnl_notify(skb, net, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC);
+ return;
errout:
if (err < 0)
rtnl_set_sk_err(net, RTNLGRP_IPV6_IFADDR, err);
kfree_skb(skb);
goto errout;
}
- err = rtnl_notify(skb, net, 0, RTNLGRP_IPV6_PREFIX, NULL, GFP_ATOMIC);
+ rtnl_notify(skb, net, 0, RTNLGRP_IPV6_PREFIX, NULL, GFP_ATOMIC);
+ return;
errout:
if (err < 0)
rtnl_set_sk_err(net, RTNLGRP_IPV6_PREFIX, err);
ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
if (write)
- addrconf_fixup_forwarding(ctl, valp, val);
+ ret = addrconf_fixup_forwarding(ctl, valp, val);
return ret;
}
static int addrconf_sysctl_forward_strategy(ctl_table *table,
- int __user *name, int nlen,
void __user *oldval,
size_t __user *oldlenp,
void __user *newval, size_t newlen)
}
*valp = new;
- addrconf_fixup_forwarding(table, valp, val);
- return 1;
+ return addrconf_fixup_forwarding(table, valp, val);
}
static struct addrconf_sysctl_table
.data = &ipv6_devconf.forwarding,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &addrconf_sysctl_forward,
- .strategy = &addrconf_sysctl_forward_strategy,
+ .proc_handler = addrconf_sysctl_forward,
+ .strategy = addrconf_sysctl_forward_strategy,
},
{
.ctl_name = NET_IPV6_HOP_LIMIT,
.data = &ipv6_devconf.mtu6,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_ACCEPT_RA,
.data = &ipv6_devconf.accept_ra,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_ACCEPT_REDIRECTS,
.data = &ipv6_devconf.accept_redirects,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_AUTOCONF,
.data = &ipv6_devconf.autoconf,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_DAD_TRANSMITS,
.data = &ipv6_devconf.dad_transmits,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_RTR_SOLICITS,
.data = &ipv6_devconf.rtr_solicits,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_RTR_SOLICIT_INTERVAL,
.data = &ipv6_devconf.rtr_solicit_interval,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- .strategy = &sysctl_jiffies,
+ .proc_handler = proc_dointvec_jiffies,
+ .strategy = sysctl_jiffies,
},
{
.ctl_name = NET_IPV6_RTR_SOLICIT_DELAY,
.data = &ipv6_devconf.rtr_solicit_delay,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- .strategy = &sysctl_jiffies,
+ .proc_handler = proc_dointvec_jiffies,
+ .strategy = sysctl_jiffies,
},
{
.ctl_name = NET_IPV6_FORCE_MLD_VERSION,
.data = &ipv6_devconf.force_mld_version,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
#ifdef CONFIG_IPV6_PRIVACY
{
.data = &ipv6_devconf.use_tempaddr,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_TEMP_VALID_LFT,
.data = &ipv6_devconf.temp_valid_lft,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_TEMP_PREFERED_LFT,
.data = &ipv6_devconf.temp_prefered_lft,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_REGEN_MAX_RETRY,
.data = &ipv6_devconf.regen_max_retry,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_MAX_DESYNC_FACTOR,
.data = &ipv6_devconf.max_desync_factor,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
#endif
{
.data = &ipv6_devconf.max_addresses,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_ACCEPT_RA_DEFRTR,
.data = &ipv6_devconf.accept_ra_defrtr,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_ACCEPT_RA_PINFO,
.data = &ipv6_devconf.accept_ra_pinfo,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
#ifdef CONFIG_IPV6_ROUTER_PREF
{
.data = &ipv6_devconf.accept_ra_rtr_pref,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_RTR_PROBE_INTERVAL,
.data = &ipv6_devconf.rtr_probe_interval,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- .strategy = &sysctl_jiffies,
+ .proc_handler = proc_dointvec_jiffies,
+ .strategy = sysctl_jiffies,
},
#ifdef CONFIG_IPV6_ROUTE_INFO
{
.data = &ipv6_devconf.accept_ra_rt_info_max_plen,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
#endif
#endif
.data = &ipv6_devconf.proxy_ndp,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = NET_IPV6_ACCEPT_SOURCE_ROUTE,
.data = &ipv6_devconf.accept_source_route,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
{
.data = &ipv6_devconf.optimistic_dad,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
#endif
.procname = "mc_forwarding",
.data = &ipv6_devconf.mc_forwarding,
.maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
+ .mode = 0444,
+ .proc_handler = proc_dointvec,
},
#endif
{
.data = &ipv6_devconf.disable_ipv6,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = CTL_UNNUMBERED,
.data = &ipv6_devconf.accept_dad,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
.ctl_name = 0, /* sentinel */
EXPORT_SYMBOL(unregister_inet6addr_notifier);
-static void addrconf_net_exit(struct net *net)
-{
- struct net_device *dev;
-
- rtnl_lock();
- /* clean dev list */
- for_each_netdev(net, dev) {
- if (__in6_dev_get(dev) == NULL)
- continue;
- addrconf_ifdown(dev, 1);
- }
- addrconf_ifdown(net->loopback_dev, 2);
- rtnl_unlock();
-}
-
-static struct pernet_operations addrconf_net_ops = {
- .exit = addrconf_net_exit,
-};
-
/*
* Init / cleanup code
*/
if (err)
goto errlo;
- err = register_pernet_device(&addrconf_net_ops);
- if (err)
- return err;
-
register_netdevice_notifier(&ipv6_dev_notf);
addrconf_verify(0);
void addrconf_cleanup(void)
{
struct inet6_ifaddr *ifa;
+ struct net_device *dev;
int i;
unregister_netdevice_notifier(&ipv6_dev_notf);
- unregister_pernet_device(&addrconf_net_ops);
-
unregister_pernet_subsys(&addrconf_ops);
rtnl_lock();
+ /* clean dev list */
+ for_each_netdev(&init_net, dev) {
+ if (__in6_dev_get(dev) == NULL)
+ continue;
+ addrconf_ifdown(dev, 1);
+ }
+ addrconf_ifdown(init_net.loopback_dev, 2);
+
/*
* Check hash table.
*/
del_timer(&addr_chk_timer);
rtnl_unlock();
-
- unregister_pernet_subsys(&addrconf_net_ops);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff