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Diffstat (limited to 'net/ipv6/addrconf.c')
-rw-r--r--net/ipv6/addrconf.c1025
1 files changed, 559 insertions, 466 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index de7a194a64ab..784f34d11fdd 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -53,6 +53,7 @@
#include <linux/route.h>
#include <linux/inetdevice.h>
#include <linux/init.h>
+#include <linux/slab.h>
#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
#endif
@@ -81,7 +82,7 @@
#include <linux/random.h>
#endif
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <asm/unaligned.h>
#include <linux/proc_fs.h>
@@ -97,7 +98,11 @@
#endif
#define INFINITY_LIFE_TIME 0xFFFFFFFF
-#define TIME_DELTA(a,b) ((unsigned long)((long)(a) - (long)(b)))
+#define TIME_DELTA(a, b) ((unsigned long)((long)(a) - (long)(b)))
+
+#define ADDRCONF_TIMER_FUZZ_MINUS (HZ > 50 ? HZ/50 : 1)
+#define ADDRCONF_TIMER_FUZZ (HZ / 4)
+#define ADDRCONF_TIMER_FUZZ_MAX (HZ)
#ifdef CONFIG_SYSCTL
static void addrconf_sysctl_register(struct inet6_dev *idev);
@@ -126,8 +131,8 @@ static int ipv6_count_addresses(struct inet6_dev *idev);
/*
* Configured unicast address hash table
*/
-static struct inet6_ifaddr *inet6_addr_lst[IN6_ADDR_HSIZE];
-static DEFINE_RWLOCK(addrconf_hash_lock);
+static struct hlist_head inet6_addr_lst[IN6_ADDR_HSIZE];
+static DEFINE_SPINLOCK(addrconf_hash_lock);
static void addrconf_verify(unsigned long);
@@ -137,8 +142,8 @@ static DEFINE_SPINLOCK(addrconf_verify_lock);
static void addrconf_join_anycast(struct inet6_ifaddr *ifp);
static void addrconf_leave_anycast(struct inet6_ifaddr *ifp);
-static void addrconf_bonding_change(struct net_device *dev,
- unsigned long event);
+static void addrconf_type_change(struct net_device *dev,
+ unsigned long event);
static int addrconf_ifdown(struct net_device *dev, int how);
static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags);
@@ -151,8 +156,8 @@ static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa);
static void inet6_prefix_notify(int event, struct inet6_dev *idev,
struct prefix_info *pinfo);
-static int ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
- struct net_device *dev);
+static bool ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
+ struct net_device *dev);
static ATOMIC_NOTIFIER_HEAD(inet6addr_chain);
@@ -249,8 +254,7 @@ static void addrconf_del_timer(struct inet6_ifaddr *ifp)
__in6_ifa_put(ifp);
}
-enum addrconf_timer_t
-{
+enum addrconf_timer_t {
AC_NONE,
AC_DAD,
AC_RS,
@@ -270,7 +274,8 @@ static void addrconf_mod_timer(struct inet6_ifaddr *ifp,
case AC_RS:
ifp->timer.function = addrconf_rs_timer;
break;
- default:;
+ default:
+ break;
}
ifp->timer.expires = jiffies + when;
add_timer(&ifp->timer);
@@ -278,31 +283,31 @@ static void addrconf_mod_timer(struct inet6_ifaddr *ifp,
static int snmp6_alloc_dev(struct inet6_dev *idev)
{
- if (snmp_mib_init((void **)idev->stats.ipv6,
+ if (snmp_mib_init((void __percpu **)idev->stats.ipv6,
sizeof(struct ipstats_mib)) < 0)
goto err_ip;
- if (snmp_mib_init((void **)idev->stats.icmpv6,
+ if (snmp_mib_init((void __percpu **)idev->stats.icmpv6,
sizeof(struct icmpv6_mib)) < 0)
goto err_icmp;
- if (snmp_mib_init((void **)idev->stats.icmpv6msg,
+ if (snmp_mib_init((void __percpu **)idev->stats.icmpv6msg,
sizeof(struct icmpv6msg_mib)) < 0)
goto err_icmpmsg;
return 0;
err_icmpmsg:
- snmp_mib_free((void **)idev->stats.icmpv6);
+ snmp_mib_free((void __percpu **)idev->stats.icmpv6);
err_icmp:
- snmp_mib_free((void **)idev->stats.ipv6);
+ snmp_mib_free((void __percpu **)idev->stats.ipv6);
err_ip:
return -ENOMEM;
}
static void snmp6_free_dev(struct inet6_dev *idev)
{
- snmp_mib_free((void **)idev->stats.icmpv6msg);
- snmp_mib_free((void **)idev->stats.icmpv6);
- snmp_mib_free((void **)idev->stats.ipv6);
+ snmp_mib_free((void __percpu **)idev->stats.icmpv6msg);
+ snmp_mib_free((void __percpu **)idev->stats.icmpv6);
+ snmp_mib_free((void __percpu **)idev->stats.ipv6);
}
/* Nobody refers to this device, we may destroy it. */
@@ -317,7 +322,7 @@ void in6_dev_finish_destroy(struct inet6_dev *idev)
{
struct net_device *dev = idev->dev;
- WARN_ON(idev->addr_list != NULL);
+ WARN_ON(!list_empty(&idev->addr_list));
WARN_ON(idev->mc_list != NULL);
#ifdef NET_REFCNT_DEBUG
@@ -325,7 +330,7 @@ void in6_dev_finish_destroy(struct inet6_dev *idev)
#endif
dev_put(dev);
if (!idev->dead) {
- printk("Freeing alive inet6 device %p\n", idev);
+ pr_warning("Freeing alive inet6 device %p\n", idev);
return;
}
snmp6_free_dev(idev);
@@ -350,6 +355,8 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
rwlock_init(&ndev->lock);
ndev->dev = dev;
+ INIT_LIST_HEAD(&ndev->addr_list);
+
memcpy(&ndev->cnf, dev_net(dev)->ipv6.devconf_dflt, sizeof(ndev->cnf));
ndev->cnf.mtu6 = dev->mtu;
ndev->cnf.sysctl = NULL;
@@ -401,6 +408,7 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
#endif
#ifdef CONFIG_IPV6_PRIVACY
+ INIT_LIST_HEAD(&ndev->tempaddr_list);
setup_timer(&ndev->regen_timer, ipv6_regen_rndid, (unsigned long)ndev);
if ((dev->flags&IFF_LOOPBACK) ||
dev->type == ARPHRD_TUNNEL ||
@@ -438,8 +446,10 @@ static struct inet6_dev * ipv6_find_idev(struct net_device *dev)
ASSERT_RTNL();
- if ((idev = __in6_dev_get(dev)) == NULL) {
- if ((idev = ipv6_add_dev(dev)) == NULL)
+ idev = __in6_dev_get(dev);
+ if (!idev) {
+ idev = ipv6_add_dev(dev);
+ if (!idev)
return NULL;
}
@@ -465,7 +475,8 @@ static void dev_forward_change(struct inet6_dev *idev)
else
ipv6_dev_mc_dec(dev, &in6addr_linklocal_allrouters);
}
- for (ifa=idev->addr_list; ifa; ifa=ifa->if_next) {
+
+ list_for_each_entry(ifa, &idev->addr_list, if_list) {
if (ifa->flags&IFA_F_TENTATIVE)
continue;
if (idev->cnf.forwarding)
@@ -502,8 +513,11 @@ static int addrconf_fixup_forwarding(struct ctl_table *table, int *p, int old)
if (p == &net->ipv6.devconf_dflt->forwarding)
return 0;
- if (!rtnl_trylock())
+ if (!rtnl_trylock()) {
+ /* Restore the original values before restarting */
+ *p = old;
return restart_syscall();
+ }
if (p == &net->ipv6.devconf_all->forwarding) {
__s32 newf = net->ipv6.devconf_all->forwarding;
@@ -519,12 +533,16 @@ static int addrconf_fixup_forwarding(struct ctl_table *table, int *p, int old)
}
#endif
-/* Nobody refers to this ifaddr, destroy it */
+static void inet6_ifa_finish_destroy_rcu(struct rcu_head *head)
+{
+ struct inet6_ifaddr *ifp = container_of(head, struct inet6_ifaddr, rcu);
+ kfree(ifp);
+}
+/* Nobody refers to this ifaddr, destroy it */
void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp)
{
- WARN_ON(ifp->if_next != NULL);
- WARN_ON(ifp->lst_next != NULL);
+ WARN_ON(!hlist_unhashed(&ifp->addr_lst));
#ifdef NET_REFCNT_DEBUG
printk(KERN_DEBUG "inet6_ifa_finish_destroy\n");
@@ -533,54 +551,46 @@ void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp)
in6_dev_put(ifp->idev);
if (del_timer(&ifp->timer))
- printk("Timer is still running, when freeing ifa=%p\n", ifp);
+ pr_notice("Timer is still running, when freeing ifa=%p\n", ifp);
- if (!ifp->dead) {
- printk("Freeing alive inet6 address %p\n", ifp);
+ if (ifp->state != INET6_IFADDR_STATE_DEAD) {
+ pr_warning("Freeing alive inet6 address %p\n", ifp);
return;
}
dst_release(&ifp->rt->u.dst);
- kfree(ifp);
+ call_rcu(&ifp->rcu, inet6_ifa_finish_destroy_rcu);
}
static void
ipv6_link_dev_addr(struct inet6_dev *idev, struct inet6_ifaddr *ifp)
{
- struct inet6_ifaddr *ifa, **ifap;
+ struct list_head *p;
int ifp_scope = ipv6_addr_src_scope(&ifp->addr);
/*
* Each device address list is sorted in order of scope -
* global before linklocal.
*/
- for (ifap = &idev->addr_list; (ifa = *ifap) != NULL;
- ifap = &ifa->if_next) {
+ list_for_each(p, &idev->addr_list) {
+ struct inet6_ifaddr *ifa
+ = list_entry(p, struct inet6_ifaddr, if_list);
if (ifp_scope >= ipv6_addr_src_scope(&ifa->addr))
break;
}
- ifp->if_next = *ifap;
- *ifap = ifp;
+ list_add_tail(&ifp->if_list, p);
}
-/*
- * Hash function taken from net_alias.c
- */
-static u8 ipv6_addr_hash(const struct in6_addr *addr)
+static u32 ipv6_addr_hash(const struct in6_addr *addr)
{
- __u32 word;
-
/*
* We perform the hash function over the last 64 bits of the address
* This will include the IEEE address token on links that support it.
*/
-
- word = (__force u32)(addr->s6_addr32[2] ^ addr->s6_addr32[3]);
- word ^= (word >> 16);
- word ^= (word >> 8);
-
- return ((word ^ (word >> 4)) & 0x0f);
+ return jhash_2words((__force u32)addr->s6_addr32[2],
+ (__force u32)addr->s6_addr32[3], 0)
+ & (IN6_ADDR_HSIZE - 1);
}
/* On success it returns ifp with increased reference count */
@@ -591,7 +601,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
{
struct inet6_ifaddr *ifa = NULL;
struct rt6_info *rt;
- int hash;
+ unsigned int hash;
int err = 0;
int addr_type = ipv6_addr_type(addr);
@@ -612,7 +622,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
goto out2;
}
- write_lock(&addrconf_hash_lock);
+ spin_lock(&addrconf_hash_lock);
/* Ignore adding duplicate addresses on an interface */
if (ipv6_chk_same_addr(dev_net(idev->dev), addr, idev->dev)) {
@@ -638,7 +648,9 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
ipv6_addr_copy(&ifa->addr, addr);
spin_lock_init(&ifa->lock);
+ spin_lock_init(&ifa->state_lock);
init_timer(&ifa->timer);
+ INIT_HLIST_NODE(&ifa->addr_lst);
ifa->timer.data = (unsigned long) ifa;
ifa->scope = scope;
ifa->prefix_len = pfxlen;
@@ -665,10 +677,8 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
/* Add to big hash table */
hash = ipv6_addr_hash(addr);
- ifa->lst_next = inet6_addr_lst[hash];
- inet6_addr_lst[hash] = ifa;
- in6_ifa_hold(ifa);
- write_unlock(&addrconf_hash_lock);
+ hlist_add_head_rcu(&ifa->addr_lst, &inet6_addr_lst[hash]);
+ spin_unlock(&addrconf_hash_lock);
write_lock(&idev->lock);
/* Add to inet6_dev unicast addr list. */
@@ -676,8 +686,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
#ifdef CONFIG_IPV6_PRIVACY
if (ifa->flags&IFA_F_TEMPORARY) {
- ifa->tmp_next = idev->tempaddr_list;
- idev->tempaddr_list = ifa;
+ list_add(&ifa->tmp_list, &idev->tempaddr_list);
in6_ifa_hold(ifa);
}
#endif
@@ -696,7 +705,7 @@ out2:
return ifa;
out:
- write_unlock(&addrconf_hash_lock);
+ spin_unlock(&addrconf_hash_lock);
goto out2;
}
@@ -704,52 +713,44 @@ out:
static void ipv6_del_addr(struct inet6_ifaddr *ifp)
{
- struct inet6_ifaddr *ifa, **ifap;
+ struct inet6_ifaddr *ifa, *ifn;
struct inet6_dev *idev = ifp->idev;
+ int state;
int hash;
int deleted = 0, onlink = 0;
unsigned long expires = jiffies;
hash = ipv6_addr_hash(&ifp->addr);
- ifp->dead = 1;
+ spin_lock_bh(&ifp->state_lock);
+ state = ifp->state;
+ ifp->state = INET6_IFADDR_STATE_DEAD;
+ spin_unlock_bh(&ifp->state_lock);
- write_lock_bh(&addrconf_hash_lock);
- for (ifap = &inet6_addr_lst[hash]; (ifa=*ifap) != NULL;
- ifap = &ifa->lst_next) {
- if (ifa == ifp) {
- *ifap = ifa->lst_next;
- __in6_ifa_put(ifp);
- ifa->lst_next = NULL;
- break;
- }
- }
- write_unlock_bh(&addrconf_hash_lock);
+ if (state == INET6_IFADDR_STATE_DEAD)
+ goto out;
+
+ spin_lock_bh(&addrconf_hash_lock);
+ hlist_del_init_rcu(&ifp->addr_lst);
+ spin_unlock_bh(&addrconf_hash_lock);
write_lock_bh(&idev->lock);
#ifdef CONFIG_IPV6_PRIVACY
if (ifp->flags&IFA_F_TEMPORARY) {
- for (ifap = &idev->tempaddr_list; (ifa=*ifap) != NULL;
- ifap = &ifa->tmp_next) {
- if (ifa == ifp) {
- *ifap = ifa->tmp_next;
- if (ifp->ifpub) {
- in6_ifa_put(ifp->ifpub);
- ifp->ifpub = NULL;
- }
- __in6_ifa_put(ifp);
- ifa->tmp_next = NULL;
- break;
- }
+ list_del(&ifp->tmp_list);
+ if (ifp->ifpub) {
+ in6_ifa_put(ifp->ifpub);
+ ifp->ifpub = NULL;
}
+ __in6_ifa_put(ifp);
}
#endif
- for (ifap = &idev->addr_list; (ifa=*ifap) != NULL;) {
+ list_for_each_entry_safe(ifa, ifn, &idev->addr_list, if_list) {
if (ifa == ifp) {
- *ifap = ifa->if_next;
+ list_del_init(&ifp->if_list);
__in6_ifa_put(ifp);
- ifa->if_next = NULL;
+
if (!(ifp->flags & IFA_F_PERMANENT) || onlink > 0)
break;
deleted = 1;
@@ -782,7 +783,6 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp)
}
}
}
- ifap = &ifa->if_next;
}
write_unlock_bh(&idev->lock);
@@ -826,6 +826,7 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp)
dst_release(&rt->u.dst);
}
+out:
in6_ifa_put(ifp);
}
@@ -989,8 +990,7 @@ struct ipv6_saddr_dst {
static inline int ipv6_saddr_preferred(int type)
{
- if (type & (IPV6_ADDR_MAPPED|IPV6_ADDR_COMPATv4|
- IPV6_ADDR_LOOPBACK|IPV6_ADDR_RESERVED))
+ if (type & (IPV6_ADDR_MAPPED|IPV6_ADDR_COMPATv4|IPV6_ADDR_LOOPBACK))
return 1;
return 0;
}
@@ -1162,7 +1162,7 @@ int ipv6_dev_get_saddr(struct net *net, struct net_device *dst_dev,
continue;
read_lock_bh(&idev->lock);
- for (score->ifa = idev->addr_list; score->ifa; score->ifa = score->ifa->if_next) {
+ list_for_each_entry(score->ifa, &idev->addr_list, if_list) {
int i;
/*
@@ -1240,7 +1240,6 @@ try_nextdev:
in6_ifa_put(hiscore->ifa);
return 0;
}
-
EXPORT_SYMBOL(ipv6_dev_get_saddr);
int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
@@ -1250,12 +1249,14 @@ int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
int err = -EADDRNOTAVAIL;
rcu_read_lock();
- if ((idev = __in6_dev_get(dev)) != NULL) {
+ idev = __in6_dev_get(dev);
+ if (idev) {
struct inet6_ifaddr *ifp;
read_lock_bh(&idev->lock);
- for (ifp=idev->addr_list; ifp; ifp=ifp->if_next) {
- if (ifp->scope == IFA_LINK && !(ifp->flags & banned_flags)) {
+ list_for_each_entry(ifp, &idev->addr_list, if_list) {
+ if (ifp->scope == IFA_LINK &&
+ !(ifp->flags & banned_flags)) {
ipv6_addr_copy(addr, &ifp->addr);
err = 0;
break;
@@ -1273,7 +1274,7 @@ static int ipv6_count_addresses(struct inet6_dev *idev)
struct inet6_ifaddr *ifp;
read_lock_bh(&idev->lock);
- for (ifp=idev->addr_list; ifp; ifp=ifp->if_next)
+ list_for_each_entry(ifp, &idev->addr_list, if_list)
cnt++;
read_unlock_bh(&idev->lock);
return cnt;
@@ -1282,41 +1283,44 @@ static int ipv6_count_addresses(struct inet6_dev *idev)
int ipv6_chk_addr(struct net *net, struct in6_addr *addr,
struct net_device *dev, int strict)
{
- struct inet6_ifaddr * ifp;
- u8 hash = ipv6_addr_hash(addr);
+ struct inet6_ifaddr *ifp;
+ struct hlist_node *node;
+ unsigned int hash = ipv6_addr_hash(addr);
- read_lock_bh(&addrconf_hash_lock);
- for(ifp = inet6_addr_lst[hash]; ifp; ifp=ifp->lst_next) {
+ rcu_read_lock_bh();
+ hlist_for_each_entry_rcu(ifp, node, &inet6_addr_lst[hash], addr_lst) {
if (!net_eq(dev_net(ifp->idev->dev), net))
continue;
if (ipv6_addr_equal(&ifp->addr, addr) &&
- !(ifp->flags&IFA_F_TENTATIVE)) {
- if (dev == NULL || ifp->idev->dev == dev ||
- !(ifp->scope&(IFA_LINK|IFA_HOST) || strict))
- break;
+ !(ifp->flags&IFA_F_TENTATIVE) &&
+ (dev == NULL || ifp->idev->dev == dev ||
+ !(ifp->scope&(IFA_LINK|IFA_HOST) || strict))) {
+ rcu_read_unlock_bh();
+ return 1;
}
}
- read_unlock_bh(&addrconf_hash_lock);
- return ifp != NULL;
+
+ rcu_read_unlock_bh();
+ return 0;
}
EXPORT_SYMBOL(ipv6_chk_addr);
-static
-int ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
- struct net_device *dev)
+static bool ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
+ struct net_device *dev)
{
- struct inet6_ifaddr * ifp;
- u8 hash = ipv6_addr_hash(addr);
+ unsigned int hash = ipv6_addr_hash(addr);
+ struct inet6_ifaddr *ifp;
+ struct hlist_node *node;
- for(ifp = inet6_addr_lst[hash]; ifp; ifp=ifp->lst_next) {
+ hlist_for_each_entry(ifp, node, &inet6_addr_lst[hash], addr_lst) {
if (!net_eq(dev_net(ifp->idev->dev), net))
continue;
if (ipv6_addr_equal(&ifp->addr, addr)) {
if (dev == NULL || ifp->idev->dev == dev)
- break;
+ return true;
}
}
- return ifp != NULL;
+ return false;
}
int ipv6_chk_prefix(struct in6_addr *addr, struct net_device *dev)
@@ -1330,7 +1334,7 @@ int ipv6_chk_prefix(struct in6_addr *addr, struct net_device *dev)
idev = __in6_dev_get(dev);
if (idev) {
read_lock_bh(&idev->lock);
- for (ifa = idev->addr_list; ifa; ifa = ifa->if_next) {
+ list_for_each_entry(ifa, &idev->addr_list, if_list) {
onlink = ipv6_prefix_equal(addr, &ifa->addr,
ifa->prefix_len);
if (onlink)
@@ -1347,24 +1351,26 @@ EXPORT_SYMBOL(ipv6_chk_prefix);
struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, const struct in6_addr *addr,
struct net_device *dev, int strict)
{
- struct inet6_ifaddr * ifp;
- u8 hash = ipv6_addr_hash(addr);
+ struct inet6_ifaddr *ifp, *result = NULL;
+ unsigned int hash = ipv6_addr_hash(addr);
+ struct hlist_node *node;
- read_lock_bh(&addrconf_hash_lock);
- for(ifp = inet6_addr_lst[hash]; ifp; ifp=ifp->lst_next) {
+ rcu_read_lock_bh();
+ hlist_for_each_entry_rcu_bh(ifp, node, &inet6_addr_lst[hash], addr_lst) {
if (!net_eq(dev_net(ifp->idev->dev), net))
continue;
if (ipv6_addr_equal(&ifp->addr, addr)) {
if (dev == NULL || ifp->idev->dev == dev ||
!(ifp->scope&(IFA_LINK|IFA_HOST) || strict)) {
+ result = ifp;
in6_ifa_hold(ifp);
break;
}
}
}
- read_unlock_bh(&addrconf_hash_lock);
+ rcu_read_unlock_bh();
- return ifp;
+ return result;
}
/* Gets referenced address, destroys ifaddr */
@@ -1378,6 +1384,8 @@ static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
if (dad_failed)
ifp->flags |= IFA_F_DADFAILED;
spin_unlock_bh(&ifp->lock);
+ if (dad_failed)
+ ipv6_ifa_notify(0, ifp);
in6_ifa_put(ifp);
#ifdef CONFIG_IPV6_PRIVACY
} else if (ifp->flags&IFA_F_TEMPORARY) {
@@ -1398,10 +1406,27 @@ static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
ipv6_del_addr(ifp);
}
+static int addrconf_dad_end(struct inet6_ifaddr *ifp)
+{
+ int err = -ENOENT;
+
+ spin_lock(&ifp->state_lock);
+ if (ifp->state == INET6_IFADDR_STATE_DAD) {
+ ifp->state = INET6_IFADDR_STATE_POSTDAD;
+ err = 0;
+ }
+ spin_unlock(&ifp->state_lock);
+
+ return err;
+}
+
void addrconf_dad_failure(struct inet6_ifaddr *ifp)
{
struct inet6_dev *idev = ifp->idev;
+ if (addrconf_dad_end(ifp))
+ return;
+
if (net_ratelimit())
printk(KERN_INFO "%s: IPv6 duplicate address %pI6c detected!\n",
ifp->idev->dev->name, &ifp->addr);
@@ -1565,7 +1590,7 @@ static int ipv6_inherit_eui64(u8 *eui, struct inet6_dev *idev)
struct inet6_ifaddr *ifp;
read_lock_bh(&idev->lock);
- for (ifp=idev->addr_list; ifp; ifp=ifp->if_next) {
+ list_for_each_entry(ifp, &idev->addr_list, if_list) {
if (ifp->scope == IFA_LINK && !(ifp->flags&IFA_F_TENTATIVE)) {
memcpy(eui, ifp->addr.s6_addr+8, 8);
err = 0;
@@ -1733,8 +1758,12 @@ static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
ASSERT_RTNL();
- if ((idev = ipv6_find_idev(dev)) == NULL)
- return NULL;
+ idev = ipv6_find_idev(dev);
+ if (!idev)
+ return ERR_PTR(-ENOBUFS);
+
+ if (idev->cnf.disable_ipv6)
+ return ERR_PTR(-EACCES);
/* Add default multicast route */
addrconf_add_mroute(dev);
@@ -1966,7 +1995,7 @@ ok:
#ifdef CONFIG_IPV6_PRIVACY
read_lock_bh(&in6_dev->lock);
/* update all temporary addresses in the list */
- for (ift=in6_dev->tempaddr_list; ift; ift=ift->tmp_next) {
+ list_for_each_entry(ift, &in6_dev->tempaddr_list, tmp_list) {
/*
* When adjusting the lifetimes of an existing
* temporary address, only lower the lifetimes.
@@ -2103,8 +2132,9 @@ static int inet6_addr_add(struct net *net, int ifindex, struct in6_addr *pfx,
if (!dev)
return -ENODEV;
- if ((idev = addrconf_add_dev(dev)) == NULL)
- return -ENOBUFS;
+ idev = addrconf_add_dev(dev);
+ if (IS_ERR(idev))
+ return PTR_ERR(idev);
scope = ipv6_addr_scope(pfx);
@@ -2169,7 +2199,7 @@ static int inet6_addr_del(struct net *net, int ifindex, struct in6_addr *pfx,
return -ENXIO;
read_lock_bh(&idev->lock);
- for (ifp = idev->addr_list; ifp; ifp=ifp->if_next) {
+ list_for_each_entry(ifp, &idev->addr_list, if_list) {
if (ifp->prefix_len == plen &&
ipv6_addr_equal(pfx, &ifp->addr)) {
in6_ifa_hold(ifp);
@@ -2180,7 +2210,7 @@ static int inet6_addr_del(struct net *net, int ifindex, struct in6_addr *pfx,
/* If the last address is deleted administratively,
disable IPv6 on this interface.
*/
- if (idev->addr_list == NULL)
+ if (list_empty(&idev->addr_list))
addrconf_ifdown(idev->dev, 1);
return 0;
}
@@ -2351,7 +2381,7 @@ static void addrconf_dev_config(struct net_device *dev)
}
idev = addrconf_add_dev(dev);
- if (idev == NULL)
+ if (IS_ERR(idev))
return;
memset(&addr, 0, sizeof(struct in6_addr));
@@ -2441,7 +2471,8 @@ static void addrconf_ip6_tnl_config(struct net_device *dev)
ASSERT_RTNL();
- if ((idev = addrconf_add_dev(dev)) == NULL) {
+ idev = addrconf_add_dev(dev);
+ if (IS_ERR(idev)) {
printk(KERN_DEBUG "init ip6-ip6: add_dev failed\n");
return;
}
@@ -2456,7 +2487,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
int run_pending = 0;
int err;
- switch(event) {
+ switch (event) {
case NETDEV_REGISTER:
if (!idev && dev->mtu >= IPV6_MIN_MTU) {
idev = ipv6_add_dev(dev);
@@ -2464,6 +2495,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
return notifier_from_errno(-ENOMEM);
}
break;
+
case NETDEV_UP:
case NETDEV_CHANGE:
if (dev->flags & IFF_SLAVE)
@@ -2493,10 +2525,9 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
}
if (idev) {
- if (idev->if_flags & IF_READY) {
+ if (idev->if_flags & IF_READY)
/* device is already configured. */
break;
- }
idev->if_flags |= IF_READY;
}
@@ -2508,7 +2539,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
run_pending = 1;
}
- switch(dev->type) {
+ switch (dev->type) {
#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
case ARPHRD_SIT:
addrconf_sit_config(dev);
@@ -2525,25 +2556,30 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
addrconf_dev_config(dev);
break;
}
+
if (idev) {
if (run_pending)
addrconf_dad_run(idev);
- /* If the MTU changed during the interface down, when the
- interface up, the changed MTU must be reflected in the
- idev as well as routers.
+ /*
+ * If the MTU changed during the interface down,
+ * when the interface up, the changed MTU must be
+ * reflected in the idev as well as routers.
*/
- if (idev->cnf.mtu6 != dev->mtu && dev->mtu >= IPV6_MIN_MTU) {
+ if (idev->cnf.mtu6 != dev->mtu &&
+ dev->mtu >= IPV6_MIN_MTU) {
rt6_mtu_change(dev, dev->mtu);
idev->cnf.mtu6 = dev->mtu;
}
idev->tstamp = jiffies;
inet6_ifinfo_notify(RTM_NEWLINK, idev);
- /* If the changed mtu during down is lower than IPV6_MIN_MTU
- stop IPv6 on this interface.
+
+ /*
+ * If the changed mtu during down is lower than
+ * IPV6_MIN_MTU stop IPv6 on this interface.
*/
if (dev->mtu < IPV6_MIN_MTU)
- addrconf_ifdown(dev, event != NETDEV_DOWN);
+ addrconf_ifdown(dev, 1);
}
break;
@@ -2560,7 +2596,10 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
break;
}
- /* MTU falled under IPV6_MIN_MTU. Stop IPv6 on this interface. */
+ /*
+ * MTU falled under IPV6_MIN_MTU.
+ * Stop IPv6 on this interface.
+ */
case NETDEV_DOWN:
case NETDEV_UNREGISTER:
@@ -2580,9 +2619,10 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
return notifier_from_errno(err);
}
break;
- case NETDEV_BONDING_OLDTYPE:
- case NETDEV_BONDING_NEWTYPE:
- addrconf_bonding_change(dev, event);
+
+ case NETDEV_PRE_TYPE_CHANGE:
+ case NETDEV_POST_TYPE_CHANGE:
+ addrconf_type_change(dev, event);
break;
}
@@ -2594,28 +2634,28 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
*/
static struct notifier_block ipv6_dev_notf = {
.notifier_call = addrconf_notify,
- .priority = 0
};
-static void addrconf_bonding_change(struct net_device *dev, unsigned long event)
+static void addrconf_type_change(struct net_device *dev, unsigned long event)
{
struct inet6_dev *idev;
ASSERT_RTNL();
idev = __in6_dev_get(dev);
- if (event == NETDEV_BONDING_NEWTYPE)
+ if (event == NETDEV_POST_TYPE_CHANGE)
ipv6_mc_remap(idev);
- else if (event == NETDEV_BONDING_OLDTYPE)
+ else if (event == NETDEV_PRE_TYPE_CHANGE)
ipv6_mc_unmap(idev);
}
static int addrconf_ifdown(struct net_device *dev, int how)
{
- struct inet6_dev *idev;
- struct inet6_ifaddr *ifa, **bifa;
struct net *net = dev_net(dev);
- int i;
+ struct inet6_dev *idev;
+ struct inet6_ifaddr *ifa;
+ LIST_HEAD(keep_list);
+ int state;
ASSERT_RTNL();
@@ -2626,8 +2666,9 @@ static int addrconf_ifdown(struct net_device *dev, int how)
if (idev == NULL)
return -ENODEV;
- /* Step 1: remove reference to ipv6 device from parent device.
- Do not dev_put!
+ /*
+ * Step 1: remove reference to ipv6 device from parent device.
+ * Do not dev_put!
*/
if (how) {
idev->dead = 1;
@@ -2640,40 +2681,21 @@ static int addrconf_ifdown(struct net_device *dev, int how)
}
- /* Step 2: clear hash table */
- for (i=0; i<IN6_ADDR_HSIZE; i++) {
- bifa = &inet6_addr_lst[i];
-
- write_lock_bh(&addrconf_hash_lock);
- while ((ifa = *bifa) != NULL) {
- if (ifa->idev == idev) {
- *bifa = ifa->lst_next;
- ifa->lst_next = NULL;
- addrconf_del_timer(ifa);
- in6_ifa_put(ifa);
- continue;
- }
- bifa = &ifa->lst_next;
- }
- write_unlock_bh(&addrconf_hash_lock);
- }
-
write_lock_bh(&idev->lock);
- /* Step 3: clear flags for stateless addrconf */
+ /* Step 2: clear flags for stateless addrconf */
if (!how)
idev->if_flags &= ~(IF_RS_SENT|IF_RA_RCVD|IF_READY);
- /* Step 4: clear address list */
#ifdef CONFIG_IPV6_PRIVACY
if (how && del_timer(&idev->regen_timer))
in6_dev_put(idev);
- /* clear tempaddr list */
- while ((ifa = idev->tempaddr_list) != NULL) {
- idev->tempaddr_list = ifa->tmp_next;
- ifa->tmp_next = NULL;
- ifa->dead = 1;
+ /* Step 3: clear tempaddr list */
+ while (!list_empty(&idev->tempaddr_list)) {
+ ifa = list_first_entry(&idev->tempaddr_list,
+ struct inet6_ifaddr, tmp_list);
+ list_del(&ifa->tmp_list);
write_unlock_bh(&idev->lock);
spin_lock_bh(&ifa->lock);
@@ -2686,23 +2708,70 @@ static int addrconf_ifdown(struct net_device *dev, int how)
write_lock_bh(&idev->lock);
}
#endif
- while ((ifa = idev->addr_list) != NULL) {
- idev->addr_list = ifa->if_next;
- ifa->if_next = NULL;
- ifa->dead = 1;
+
+ while (!list_empty(&idev->addr_list)) {
+ ifa = list_first_entry(&idev->addr_list,
+ struct inet6_ifaddr, if_list);
addrconf_del_timer(ifa);
- write_unlock_bh(&idev->lock);
+
+ /* If just doing link down, and address is permanent
+ and not link-local, then retain it. */
+ if (!how &&
+ (ifa->flags&IFA_F_PERMANENT) &&
+ !(ipv6_addr_type(&ifa->addr) & IPV6_ADDR_LINKLOCAL)) {
+ list_move_tail(&ifa->if_list, &keep_list);
+
+ /* If not doing DAD on this address, just keep it. */
+ if ((dev->flags&(IFF_NOARP|IFF_LOOPBACK)) ||
+ idev->cnf.accept_dad <= 0 ||
+ (ifa->flags & IFA_F_NODAD))
+ continue;
+
+ /* If it was tentative already, no need to notify */
+ if (ifa->flags & IFA_F_TENTATIVE)
+ continue;
+
+ /* Flag it for later restoration when link comes up */
+ ifa->flags |= IFA_F_TENTATIVE;
+ ifa->state = INET6_IFADDR_STATE_DAD;
+
+ write_unlock_bh(&idev->lock);
+
+ in6_ifa_hold(ifa);
+ } else {
+ list_del(&ifa->if_list);
+
+ /* clear hash table */
+ spin_lock_bh(&addrconf_hash_lock);
+ hlist_del_init_rcu(&ifa->addr_lst);
+ spin_unlock_bh(&addrconf_hash_lock);
+
+ write_unlock_bh(&idev->lock);
+ spin_lock_bh(&ifa->state_lock);
+ state = ifa->state;
+ ifa->state = INET6_IFADDR_STATE_DEAD;
+ spin_unlock_bh(&ifa->state_lock);
+
+ if (state == INET6_IFADDR_STATE_DEAD)
+ goto put_ifa;
+ }
__ipv6_ifa_notify(RTM_DELADDR, ifa);
- atomic_notifier_call_chain(&inet6addr_chain, NETDEV_DOWN, ifa);
+ if (ifa->state == INET6_IFADDR_STATE_DEAD)
+ atomic_notifier_call_chain(&inet6addr_chain,
+ NETDEV_DOWN, ifa);
+
+put_ifa:
in6_ifa_put(ifa);
write_lock_bh(&idev->lock);
}
+
+ list_splice(&keep_list, &idev->addr_list);
+
write_unlock_bh(&idev->lock);
/* Step 5: Discard multicast list */
-
if (how)
ipv6_mc_destroy_dev(idev);
else
@@ -2710,8 +2779,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
idev->tstamp = jiffies;
- /* Shot the device (if unregistered) */
-
+ /* Last: Shot the device (if unregistered) */
if (how) {
addrconf_sysctl_unregister(idev);
neigh_parms_release(&nd_tbl, idev->nd_parms);
@@ -2724,28 +2792,29 @@ static int addrconf_ifdown(struct net_device *dev, int how)
static void addrconf_rs_timer(unsigned long data)
{
struct inet6_ifaddr *ifp = (struct inet6_ifaddr *) data;
+ struct inet6_dev *idev = ifp->idev;
- if (ifp->idev->cnf.forwarding)
+ read_lock(&idev->lock);
+ if (idev->dead || !(idev->if_flags & IF_READY))
goto out;
- if (ifp->idev->if_flags & IF_RA_RCVD) {
- /*
- * Announcement received after solicitation
- * was sent
- */
+ if (idev->cnf.forwarding)
+ goto out;
+
+ /* Announcement received after solicitation was sent */
+ if (idev->if_flags & IF_RA_RCVD)
goto out;
- }
spin_lock(&ifp->lock);
- if (ifp->probes++ < ifp->idev->cnf.rtr_solicits) {
+ if (ifp->probes++ < idev->cnf.rtr_solicits) {
/* The wait after the last probe can be shorter */
addrconf_mod_timer(ifp, AC_RS,
- (ifp->probes == ifp->idev->cnf.rtr_solicits) ?
- ifp->idev->cnf.rtr_solicit_delay :
- ifp->idev->cnf.rtr_solicit_interval);
+ (ifp->probes == idev->cnf.rtr_solicits) ?
+ idev->cnf.rtr_solicit_delay :
+ idev->cnf.rtr_solicit_interval);
spin_unlock(&ifp->lock);
- ndisc_send_rs(ifp->idev->dev, &ifp->addr, &in6addr_linklocal_allrouters);
+ ndisc_send_rs(idev->dev, &ifp->addr, &in6addr_linklocal_allrouters);
} else {
spin_unlock(&ifp->lock);
/*
@@ -2753,10 +2822,11 @@ static void addrconf_rs_timer(unsigned long data)
* assumption any longer.
*/
printk(KERN_DEBUG "%s: no IPv6 routers present\n",
- ifp->idev->dev->name);
+ idev->dev->name);
}
out:
+ read_unlock(&idev->lock);
in6_ifa_put(ifp);
}
@@ -2787,16 +2857,16 @@ static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags)
net_srandom(ifp->addr.s6_addr32[3]);
read_lock_bh(&idev->lock);
- if (ifp->dead)
+ spin_lock(&ifp->lock);
+ if (ifp->state == INET6_IFADDR_STATE_DEAD)
goto out;
- spin_lock_bh(&ifp->lock);
if (dev->flags&(IFF_NOARP|IFF_LOOPBACK) ||
idev->cnf.accept_dad < 1 ||
!(ifp->flags&IFA_F_TENTATIVE) ||
ifp->flags & IFA_F_NODAD) {
ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
- spin_unlock_bh(&ifp->lock);
+ spin_unlock(&ifp->lock);
read_unlock_bh(&idev->lock);
addrconf_dad_completed(ifp);
@@ -2804,7 +2874,7 @@ static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags)
}
if (!(idev->if_flags & IF_READY)) {
- spin_unlock_bh(&ifp->lock);
+ spin_unlock(&ifp->lock);
read_unlock_bh(&idev->lock);
/*
* If the device is not ready:
@@ -2820,12 +2890,12 @@ static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags)
* Optimistic nodes can start receiving
* Frames right away
*/
- if(ifp->flags & IFA_F_OPTIMISTIC)
+ if (ifp->flags & IFA_F_OPTIMISTIC)
ip6_ins_rt(ifp->rt);
addrconf_dad_kick(ifp);
- spin_unlock_bh(&ifp->lock);
out:
+ spin_unlock(&ifp->lock);
read_unlock_bh(&idev->lock);
}
@@ -2835,20 +2905,30 @@ static void addrconf_dad_timer(unsigned long data)
struct inet6_dev *idev = ifp->idev;
struct in6_addr mcaddr;
- read_lock_bh(&idev->lock);
- if (idev->dead) {
- read_unlock_bh(&idev->lock);
+ if (!ifp->probes && addrconf_dad_end(ifp))
+ goto out;
+
+ read_lock(&idev->lock);
+ if (idev->dead || !(idev->if_flags & IF_READY)) {
+ read_unlock(&idev->lock);
goto out;
}
- spin_lock_bh(&ifp->lock);
+
+ spin_lock(&ifp->lock);
+ if (ifp->state == INET6_IFADDR_STATE_DEAD) {
+ spin_unlock(&ifp->lock);
+ read_unlock(&idev->lock);
+ goto out;
+ }
+
if (ifp->probes == 0) {
/*
* DAD was successful
*/
ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
- spin_unlock_bh(&ifp->lock);
- read_unlock_bh(&idev->lock);
+ spin_unlock(&ifp->lock);
+ read_unlock(&idev->lock);
addrconf_dad_completed(ifp);
@@ -2857,8 +2937,8 @@ static void addrconf_dad_timer(unsigned long data)
ifp->probes--;
addrconf_mod_timer(ifp, AC_DAD, ifp->idev->nd_parms->retrans_time);
- spin_unlock_bh(&ifp->lock);
- read_unlock_bh(&idev->lock);
+ spin_unlock(&ifp->lock);
+ read_unlock(&idev->lock);
/* send a neighbour solicitation for our addr */
addrconf_addr_solict_mult(&ifp->addr, &mcaddr);
@@ -2869,7 +2949,7 @@ out:
static void addrconf_dad_completed(struct inet6_ifaddr *ifp)
{
- struct net_device * dev = ifp->idev->dev;
+ struct net_device *dev = ifp->idev->dev;
/*
* Configure the address for reception. Now it is valid.
@@ -2900,18 +2980,17 @@ static void addrconf_dad_completed(struct inet6_ifaddr *ifp)
}
}
-static void addrconf_dad_run(struct inet6_dev *idev) {
+static void addrconf_dad_run(struct inet6_dev *idev)
+{
struct inet6_ifaddr *ifp;
read_lock_bh(&idev->lock);
- for (ifp = idev->addr_list; ifp; ifp = ifp->if_next) {
- spin_lock_bh(&ifp->lock);
- if (!(ifp->flags & IFA_F_TENTATIVE)) {
- spin_unlock_bh(&ifp->lock);
- continue;
- }
- spin_unlock_bh(&ifp->lock);
- addrconf_dad_kick(ifp);
+ list_for_each_entry(ifp, &idev->addr_list, if_list) {
+ spin_lock(&ifp->lock);
+ if (ifp->flags & IFA_F_TENTATIVE &&
+ ifp->state == INET6_IFADDR_STATE_DAD)
+ addrconf_dad_kick(ifp);
+ spin_unlock(&ifp->lock);
}
read_unlock_bh(&idev->lock);
}
@@ -2929,36 +3008,35 @@ static struct inet6_ifaddr *if6_get_first(struct seq_file *seq)
struct net *net = seq_file_net(seq);
for (state->bucket = 0; state->bucket < IN6_ADDR_HSIZE; ++state->bucket) {
- ifa = inet6_addr_lst[state->bucket];
-
- while (ifa && !net_eq(dev_net(ifa->idev->dev), net))
- ifa = ifa->lst_next;
- if (ifa)
- break;
+ struct hlist_node *n;
+ hlist_for_each_entry_rcu_bh(ifa, n, &inet6_addr_lst[state->bucket],
+ addr_lst)
+ if (net_eq(dev_net(ifa->idev->dev), net))
+ return ifa;
}
- return ifa;
+ return NULL;
}
-static struct inet6_ifaddr *if6_get_next(struct seq_file *seq, struct inet6_ifaddr *ifa)
+static struct inet6_ifaddr *if6_get_next(struct seq_file *seq,
+ struct inet6_ifaddr *ifa)
{
struct if6_iter_state *state = seq->private;
struct net *net = seq_file_net(seq);
+ struct hlist_node *n = &ifa->addr_lst;
- ifa = ifa->lst_next;
-try_again:
- if (ifa) {
- if (!net_eq(dev_net(ifa->idev->dev), net)) {
- ifa = ifa->lst_next;
- goto try_again;
- }
- }
+ hlist_for_each_entry_continue_rcu_bh(ifa, n, addr_lst)
+ if (net_eq(dev_net(ifa->idev->dev), net))
+ return ifa;
- if (!ifa && ++state->bucket < IN6_ADDR_HSIZE) {
- ifa = inet6_addr_lst[state->bucket];
- goto try_again;
+ while (++state->bucket < IN6_ADDR_HSIZE) {
+ hlist_for_each_entry_rcu_bh(ifa, n,
+ &inet6_addr_lst[state->bucket], addr_lst) {
+ if (net_eq(dev_net(ifa->idev->dev), net))
+ return ifa;
+ }
}
- return ifa;
+ return NULL;
}
static struct inet6_ifaddr *if6_get_idx(struct seq_file *seq, loff_t pos)
@@ -2966,15 +3044,15 @@ static struct inet6_ifaddr *if6_get_idx(struct seq_file *seq, loff_t pos)
struct inet6_ifaddr *ifa = if6_get_first(seq);
if (ifa)
- while(pos && (ifa = if6_get_next(seq, ifa)) != NULL)
+ while (pos && (ifa = if6_get_next(seq, ifa)) != NULL)
--pos;
return pos ? NULL : ifa;
}
static void *if6_seq_start(struct seq_file *seq, loff_t *pos)
- __acquires(addrconf_hash_lock)
+ __acquires(rcu_bh)
{
- read_lock_bh(&addrconf_hash_lock);
+ rcu_read_lock_bh();
return if6_get_idx(seq, *pos);
}
@@ -2988,9 +3066,9 @@ static void *if6_seq_next(struct seq_file *seq, void *v, loff_t *pos)
}
static void if6_seq_stop(struct seq_file *seq, void *v)
- __releases(addrconf_hash_lock)
+ __releases(rcu_bh)
{
- read_unlock_bh(&addrconf_hash_lock);
+ rcu_read_unlock_bh();
}
static int if6_seq_show(struct seq_file *seq, void *v)
@@ -3027,14 +3105,14 @@ static const struct file_operations if6_fops = {
.release = seq_release_net,
};
-static int if6_proc_net_init(struct net *net)
+static int __net_init if6_proc_net_init(struct net *net)
{
if (!proc_net_fops_create(net, "if_inet6", S_IRUGO, &if6_fops))
return -ENOMEM;
return 0;
}
-static void if6_proc_net_exit(struct net *net)
+static void __net_exit if6_proc_net_exit(struct net *net)
{
proc_net_remove(net, "if_inet6");
}
@@ -3060,10 +3138,12 @@ void if6_proc_exit(void)
int ipv6_chk_home_addr(struct net *net, struct in6_addr *addr)
{
int ret = 0;
- struct inet6_ifaddr * ifp;
- u8 hash = ipv6_addr_hash(addr);
- read_lock_bh(&addrconf_hash_lock);
- for (ifp = inet6_addr_lst[hash]; ifp; ifp = ifp->lst_next) {
+ struct inet6_ifaddr *ifp = NULL;
+ struct hlist_node *n;
+ unsigned int hash = ipv6_addr_hash(addr);
+
+ rcu_read_lock_bh();
+ hlist_for_each_entry_rcu_bh(ifp, n, &inet6_addr_lst[hash], addr_lst) {
if (!net_eq(dev_net(ifp->idev->dev), net))
continue;
if (ipv6_addr_equal(&ifp->addr, addr) &&
@@ -3072,7 +3152,7 @@ int ipv6_chk_home_addr(struct net *net, struct in6_addr *addr)
break;
}
}
- read_unlock_bh(&addrconf_hash_lock);
+ rcu_read_unlock_bh();
return ret;
}
#endif
@@ -3083,43 +3163,35 @@ int ipv6_chk_home_addr(struct net *net, struct in6_addr *addr)
static void addrconf_verify(unsigned long foo)
{
+ unsigned long now, next, next_sec, next_sched;
struct inet6_ifaddr *ifp;
- unsigned long now, next;
+ struct hlist_node *node;
int i;
- spin_lock_bh(&addrconf_verify_lock);
+ rcu_read_lock_bh();
+ spin_lock(&addrconf_verify_lock);
now = jiffies;
- next = now + ADDR_CHECK_FREQUENCY;
+ next = round_jiffies_up(now + ADDR_CHECK_FREQUENCY);
del_timer(&addr_chk_timer);
- for (i=0; i < IN6_ADDR_HSIZE; i++) {
-
+ for (i = 0; i < IN6_ADDR_HSIZE; i++) {
restart:
- read_lock(&addrconf_hash_lock);
- for (ifp=inet6_addr_lst[i]; ifp; ifp=ifp->lst_next) {
+ hlist_for_each_entry_rcu_bh(ifp, node,
+ &inet6_addr_lst[i], addr_lst) {
unsigned long age;
-#ifdef CONFIG_IPV6_PRIVACY
- unsigned long regen_advance;
-#endif
if (ifp->flags & IFA_F_PERMANENT)
continue;
spin_lock(&ifp->lock);
- age = (now - ifp->tstamp) / HZ;
-
-#ifdef CONFIG_IPV6_PRIVACY
- regen_advance = ifp->idev->cnf.regen_max_retry *
- ifp->idev->cnf.dad_transmits *
- ifp->idev->nd_parms->retrans_time / HZ;
-#endif
+ /* We try to batch several events at once. */
+ age = (now - ifp->tstamp + ADDRCONF_TIMER_FUZZ_MINUS) / HZ;
if (ifp->valid_lft != INFINITY_LIFE_TIME &&
age >= ifp->valid_lft) {
spin_unlock(&ifp->lock);
in6_ifa_hold(ifp);
- read_unlock(&addrconf_hash_lock);
ipv6_del_addr(ifp);
goto restart;
} else if (ifp->prefered_lft == INFINITY_LIFE_TIME) {
@@ -3141,7 +3213,6 @@ restart:
if (deprecate) {
in6_ifa_hold(ifp);
- read_unlock(&addrconf_hash_lock);
ipv6_ifa_notify(0, ifp);
in6_ifa_put(ifp);
@@ -3150,6 +3221,10 @@ restart:
#ifdef CONFIG_IPV6_PRIVACY
} else if ((ifp->flags&IFA_F_TEMPORARY) &&
!(ifp->flags&IFA_F_TENTATIVE)) {
+ unsigned long regen_advance = ifp->idev->cnf.regen_max_retry *
+ ifp->idev->cnf.dad_transmits *
+ ifp->idev->nd_parms->retrans_time / HZ;
+
if (age >= ifp->prefered_lft - regen_advance) {
struct inet6_ifaddr *ifpub = ifp->ifpub;
if (time_before(ifp->tstamp + ifp->prefered_lft * HZ, next))
@@ -3159,7 +3234,7 @@ restart:
in6_ifa_hold(ifp);
in6_ifa_hold(ifpub);
spin_unlock(&ifp->lock);
- read_unlock(&addrconf_hash_lock);
+
spin_lock(&ifpub->lock);
ifpub->regen_count = 0;
spin_unlock(&ifpub->lock);
@@ -3179,12 +3254,26 @@ restart:
spin_unlock(&ifp->lock);
}
}
- read_unlock(&addrconf_hash_lock);
}
- addr_chk_timer.expires = time_before(next, jiffies + HZ) ? jiffies + HZ : next;
+ next_sec = round_jiffies_up(next);
+ next_sched = next;
+
+ /* If rounded timeout is accurate enough, accept it. */
+ if (time_before(next_sec, next + ADDRCONF_TIMER_FUZZ))
+ next_sched = next_sec;
+
+ /* And minimum interval is ADDRCONF_TIMER_FUZZ_MAX. */
+ if (time_before(next_sched, jiffies + ADDRCONF_TIMER_FUZZ_MAX))
+ next_sched = jiffies + ADDRCONF_TIMER_FUZZ_MAX;
+
+ ADBG((KERN_DEBUG "now = %lu, schedule = %lu, rounded schedule = %lu => %lu\n",
+ now, next, next_sec, next_sched));
+
+ addr_chk_timer.expires = next_sched;
add_timer(&addr_chk_timer);
- spin_unlock_bh(&addrconf_verify_lock);
+ spin_unlock(&addrconf_verify_lock);
+ rcu_read_unlock_bh();
}
static struct in6_addr *extract_addr(struct nlattr *addr, struct nlattr *local)
@@ -3474,8 +3563,7 @@ static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca,
return nlmsg_end(skb, nlh);
}
-enum addr_type_t
-{
+enum addr_type_t {
UNICAST_ADDR,
MULTICAST_ADDR,
ANYCAST_ADDR,
@@ -3486,7 +3574,6 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
struct netlink_callback *cb, enum addr_type_t type,
int s_ip_idx, int *p_ip_idx)
{
- struct inet6_ifaddr *ifa;
struct ifmcaddr6 *ifmca;
struct ifacaddr6 *ifaca;
int err = 1;
@@ -3494,11 +3581,12 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
read_lock_bh(&idev->lock);
switch (type) {
- case UNICAST_ADDR:
+ case UNICAST_ADDR: {
+ struct inet6_ifaddr *ifa;
+
/* unicast address incl. temp addr */
- for (ifa = idev->addr_list; ifa;
- ifa = ifa->if_next, ip_idx++) {
- if (ip_idx < s_ip_idx)
+ list_for_each_entry(ifa, &idev->addr_list, if_list) {
+ if (++ip_idx < s_ip_idx)
continue;
err = inet6_fill_ifaddr(skb, ifa,
NETLINK_CB(cb->skb).pid,
@@ -3509,6 +3597,7 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
break;
}
break;
+ }
case MULTICAST_ADDR:
/* multicast address */
for (ifmca = idev->mc_list; ifmca;
@@ -3570,10 +3659,11 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
hlist_for_each_entry_rcu(dev, node, head, index_hlist) {
if (idx < s_idx)
goto cont;
- if (idx > s_idx)
+ if (h > s_h || idx > s_idx)
s_ip_idx = 0;
ip_idx = 0;
- if ((idev = __in6_dev_get(dev)) == NULL)
+ idev = __in6_dev_get(dev);
+ if (!idev)
goto cont;
if (in6_dump_addrs(idev, skb, cb, type,
@@ -3640,12 +3730,14 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr* nlh,
if (ifm->ifa_index)
dev = __dev_get_by_index(net, ifm->ifa_index);
- if ((ifa = ipv6_get_ifaddr(net, addr, dev, 1)) == NULL) {
+ ifa = ipv6_get_ifaddr(net, addr, dev, 1);
+ if (!ifa) {
err = -EADDRNOTAVAIL;
goto errout;
}
- if ((skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_KERNEL)) == NULL) {
+ skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_KERNEL);
+ if (!skb) {
err = -ENOBUFS;
goto errout_ifa;
}
@@ -3752,8 +3844,8 @@ static inline size_t inet6_if_nlmsg_size(void)
);
}
-static inline void __snmp6_fill_stats(u64 *stats, void **mib, int items,
- int bytes)
+static inline void __snmp6_fill_stats(u64 *stats, void __percpu **mib,
+ int items, int bytes)
{
int i;
int pad = bytes - sizeof(u64) * items;
@@ -3770,12 +3862,12 @@ static inline void __snmp6_fill_stats(u64 *stats, void **mib, int items,
static void snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype,
int bytes)
{
- switch(attrtype) {
+ switch (attrtype) {
case IFLA_INET6_STATS:
- __snmp6_fill_stats(stats, (void **)idev->stats.ipv6, IPSTATS_MIB_MAX, bytes);
+ __snmp6_fill_stats(stats, (void __percpu **)idev->stats.ipv6, IPSTATS_MIB_MAX, bytes);
break;
case IFLA_INET6_ICMP6STATS:
- __snmp6_fill_stats(stats, (void **)idev->stats.icmpv6, ICMP6_MIB_MAX, bytes);
+ __snmp6_fill_stats(stats, (void __percpu **)idev->stats.icmpv6, ICMP6_MIB_MAX, bytes);
break;
}
}
@@ -4006,7 +4098,9 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
addrconf_leave_anycast(ifp);
addrconf_leave_solict(ifp->idev, &ifp->addr);
dst_hold(&ifp->rt->u.dst);
- if (ip6_del_rt(ifp->rt))
+
+ if (ifp->state == INET6_IFADDR_STATE_DEAD &&
+ ip6_del_rt(ifp->rt))
dst_free(&ifp->rt->u.dst);
break;
}
@@ -4028,12 +4122,15 @@ int addrconf_sysctl_forward(ctl_table *ctl, int write,
{
int *valp = ctl->data;
int val = *valp;
+ loff_t pos = *ppos;
int ret;
ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
if (write)
ret = addrconf_fixup_forwarding(ctl, valp, val);
+ if (ret)
+ *ppos = pos;
return ret;
}
@@ -4075,8 +4172,11 @@ static int addrconf_disable_ipv6(struct ctl_table *table, int *p, int old)
if (p == &net->ipv6.devconf_dflt->disable_ipv6)
return 0;
- if (!rtnl_trylock())
+ if (!rtnl_trylock()) {
+ /* Restore the original values before restarting */
+ *p = old;
return restart_syscall();
+ }
if (p == &net->ipv6.devconf_all->disable_ipv6) {
__s32 newf = net->ipv6.devconf_all->disable_ipv6;
@@ -4095,12 +4195,15 @@ int addrconf_sysctl_disable(ctl_table *ctl, int write,
{
int *valp = ctl->data;
int val = *valp;
+ loff_t pos = *ppos;
int ret;
ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
if (write)
ret = addrconf_disable_ipv6(ctl, valp, val);
+ if (ret)
+ *ppos = pos;
return ret;
}
@@ -4113,211 +4216,211 @@ static struct addrconf_sysctl_table
.sysctl_header = NULL,
.addrconf_vars = {
{
- .procname = "forwarding",
- .data = &ipv6_devconf.forwarding,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = addrconf_sysctl_forward,
+ .procname = "forwarding",
+ .data = &ipv6_devconf.forwarding,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = addrconf_sysctl_forward,
},
{
- .procname = "hop_limit",
- .data = &ipv6_devconf.hop_limit,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "hop_limit",
+ .data = &ipv6_devconf.hop_limit,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "mtu",
- .data = &ipv6_devconf.mtu6,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "mtu",
+ .data = &ipv6_devconf.mtu6,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "accept_ra",
- .data = &ipv6_devconf.accept_ra,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "accept_ra",
+ .data = &ipv6_devconf.accept_ra,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "accept_redirects",
- .data = &ipv6_devconf.accept_redirects,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "accept_redirects",
+ .data = &ipv6_devconf.accept_redirects,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "autoconf",
- .data = &ipv6_devconf.autoconf,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "autoconf",
+ .data = &ipv6_devconf.autoconf,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "dad_transmits",
- .data = &ipv6_devconf.dad_transmits,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "dad_transmits",
+ .data = &ipv6_devconf.dad_transmits,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "router_solicitations",
- .data = &ipv6_devconf.rtr_solicits,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "router_solicitations",
+ .data = &ipv6_devconf.rtr_solicits,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "router_solicitation_interval",
- .data = &ipv6_devconf.rtr_solicit_interval,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_jiffies,
+ .procname = "router_solicitation_interval",
+ .data = &ipv6_devconf.rtr_solicit_interval,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_jiffies,
},
{
- .procname = "router_solicitation_delay",
- .data = &ipv6_devconf.rtr_solicit_delay,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_jiffies,
+ .procname = "router_solicitation_delay",
+ .data = &ipv6_devconf.rtr_solicit_delay,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_jiffies,
},
{
- .procname = "force_mld_version",
- .data = &ipv6_devconf.force_mld_version,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "force_mld_version",
+ .data = &ipv6_devconf.force_mld_version,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
#ifdef CONFIG_IPV6_PRIVACY
{
- .procname = "use_tempaddr",
- .data = &ipv6_devconf.use_tempaddr,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "use_tempaddr",
+ .data = &ipv6_devconf.use_tempaddr,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "temp_valid_lft",
- .data = &ipv6_devconf.temp_valid_lft,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "temp_valid_lft",
+ .data = &ipv6_devconf.temp_valid_lft,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "temp_prefered_lft",
- .data = &ipv6_devconf.temp_prefered_lft,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "temp_prefered_lft",
+ .data = &ipv6_devconf.temp_prefered_lft,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "regen_max_retry",
- .data = &ipv6_devconf.regen_max_retry,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "regen_max_retry",
+ .data = &ipv6_devconf.regen_max_retry,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "max_desync_factor",
- .data = &ipv6_devconf.max_desync_factor,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "max_desync_factor",
+ .data = &ipv6_devconf.max_desync_factor,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
#endif
{
- .procname = "max_addresses",
- .data = &ipv6_devconf.max_addresses,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "max_addresses",
+ .data = &ipv6_devconf.max_addresses,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "accept_ra_defrtr",
- .data = &ipv6_devconf.accept_ra_defrtr,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "accept_ra_defrtr",
+ .data = &ipv6_devconf.accept_ra_defrtr,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "accept_ra_pinfo",
- .data = &ipv6_devconf.accept_ra_pinfo,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "accept_ra_pinfo",
+ .data = &ipv6_devconf.accept_ra_pinfo,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
#ifdef CONFIG_IPV6_ROUTER_PREF
{
- .procname = "accept_ra_rtr_pref",
- .data = &ipv6_devconf.accept_ra_rtr_pref,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "accept_ra_rtr_pref",
+ .data = &ipv6_devconf.accept_ra_rtr_pref,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "router_probe_interval",
- .data = &ipv6_devconf.rtr_probe_interval,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec_jiffies,
+ .procname = "router_probe_interval",
+ .data = &ipv6_devconf.rtr_probe_interval,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_jiffies,
},
#ifdef CONFIG_IPV6_ROUTE_INFO
{
- .procname = "accept_ra_rt_info_max_plen",
- .data = &ipv6_devconf.accept_ra_rt_info_max_plen,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "accept_ra_rt_info_max_plen",
+ .data = &ipv6_devconf.accept_ra_rt_info_max_plen,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
#endif
#endif
{
- .procname = "proxy_ndp",
- .data = &ipv6_devconf.proxy_ndp,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "proxy_ndp",
+ .data = &ipv6_devconf.proxy_ndp,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
- .procname = "accept_source_route",
- .data = &ipv6_devconf.accept_source_route,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "accept_source_route",
+ .data = &ipv6_devconf.accept_source_route,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
{
- .procname = "optimistic_dad",
- .data = &ipv6_devconf.optimistic_dad,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "optimistic_dad",
+ .data = &ipv6_devconf.optimistic_dad,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
#endif
#ifdef CONFIG_IPV6_MROUTE
{
- .procname = "mc_forwarding",
- .data = &ipv6_devconf.mc_forwarding,
- .maxlen = sizeof(int),
- .mode = 0444,
- .proc_handler = proc_dointvec,
+ .procname = "mc_forwarding",
+ .data = &ipv6_devconf.mc_forwarding,
+ .maxlen = sizeof(int),
+ .mode = 0444,
+ .proc_handler = proc_dointvec,
},
#endif
{
- .procname = "disable_ipv6",
- .data = &ipv6_devconf.disable_ipv6,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = addrconf_sysctl_disable,
+ .procname = "disable_ipv6",
+ .data = &ipv6_devconf.disable_ipv6,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = addrconf_sysctl_disable,
},
{
- .procname = "accept_dad",
- .data = &ipv6_devconf.accept_dad,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
+ .procname = "accept_dad",
+ .data = &ipv6_devconf.accept_dad,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
},
{
.procname = "force_tllao",
@@ -4353,8 +4456,8 @@ static int __addrconf_sysctl_register(struct net *net, char *dev_name,
if (t == NULL)
goto out;
- for (i=0; t->addrconf_vars[i].data; i++) {
- t->addrconf_vars[i].data += (char*)p - (char*)&ipv6_devconf;
+ for (i = 0; t->addrconf_vars[i].data; i++) {
+ t->addrconf_vars[i].data += (char *)p - (char *)&ipv6_devconf;
t->addrconf_vars[i].extra1 = idev; /* embedded; no ref */
t->addrconf_vars[i].extra2 = net;
}
@@ -4402,8 +4505,7 @@ static void __addrconf_sysctl_unregister(struct ipv6_devconf *p)
static void addrconf_sysctl_register(struct inet6_dev *idev)
{
- neigh_sysctl_register(idev->dev, idev->nd_parms, NET_IPV6,
- NET_IPV6_NEIGH, "ipv6",
+ neigh_sysctl_register(idev->dev, idev->nd_parms, "ipv6",
&ndisc_ifinfo_sysctl_change);
__addrconf_sysctl_register(dev_net(idev->dev), idev->dev->name,
idev, &idev->cnf);
@@ -4418,7 +4520,7 @@ static void addrconf_sysctl_unregister(struct inet6_dev *idev)
#endif
-static int addrconf_init_net(struct net *net)
+static int __net_init addrconf_init_net(struct net *net)
{
int err;
struct ipv6_devconf *all, *dflt;
@@ -4467,7 +4569,7 @@ err_alloc_all:
return err;
}
-static void addrconf_exit_net(struct net *net)
+static void __net_exit addrconf_exit_net(struct net *net)
{
#ifdef CONFIG_SYSCTL
__addrconf_sysctl_unregister(net->ipv6.devconf_dflt);
@@ -4492,14 +4594,12 @@ int register_inet6addr_notifier(struct notifier_block *nb)
{
return atomic_notifier_chain_register(&inet6addr_chain, nb);
}
-
EXPORT_SYMBOL(register_inet6addr_notifier);
int unregister_inet6addr_notifier(struct notifier_block *nb)
{
- return atomic_notifier_chain_unregister(&inet6addr_chain,nb);
+ return atomic_notifier_chain_unregister(&inet6addr_chain, nb);
}
-
EXPORT_SYMBOL(unregister_inet6addr_notifier);
/*
@@ -4508,11 +4608,12 @@ EXPORT_SYMBOL(unregister_inet6addr_notifier);
int __init addrconf_init(void)
{
- int err;
+ int i, err;
- if ((err = ipv6_addr_label_init()) < 0) {
- printk(KERN_CRIT "IPv6 Addrconf: cannot initialize default policy table: %d.\n",
- err);
+ err = ipv6_addr_label_init();
+ if (err < 0) {
+ printk(KERN_CRIT "IPv6 Addrconf:"
+ " cannot initialize default policy table: %d.\n", err);
return err;
}
@@ -4543,6 +4644,9 @@ int __init addrconf_init(void)
if (err)
goto errlo;
+ for (i = 0; i < IN6_ADDR_HSIZE; i++)
+ INIT_HLIST_HEAD(&inet6_addr_lst[i]);
+
register_netdevice_notifier(&ipv6_dev_notf);
addrconf_verify(0);
@@ -4571,7 +4675,6 @@ errlo:
void addrconf_cleanup(void)
{
- struct inet6_ifaddr *ifa;
struct net_device *dev;
int i;
@@ -4591,20 +4694,10 @@ void addrconf_cleanup(void)
/*
* Check hash table.
*/
- write_lock_bh(&addrconf_hash_lock);
- for (i=0; i < IN6_ADDR_HSIZE; i++) {
- for (ifa=inet6_addr_lst[i]; ifa; ) {
- struct inet6_ifaddr *bifa;
-
- bifa = ifa;
- ifa = ifa->lst_next;
- printk(KERN_DEBUG "bug: IPv6 address leakage detected: ifa=%p\n", bifa);
- /* Do not free it; something is wrong.
- Now we can investigate it with debugger.
- */
- }
- }
- write_unlock_bh(&addrconf_hash_lock);
+ spin_lock_bh(&addrconf_hash_lock);
+ for (i = 0; i < IN6_ADDR_HSIZE; i++)
+ WARN_ON(!hlist_empty(&inet6_addr_lst[i]));
+ spin_unlock_bh(&addrconf_hash_lock);
del_timer(&addr_chk_timer);
rtnl_unlock();
generated by cgit v1.2.3 (git 2.0.4) at 2025-01-28 14:23:15 +0000