* Linux INET6 implementation
*
* Authors:
- * Pedro Roque <roque@di.fc.ul.pt>
+ * Pedro Roque <roque@di.fc.ul.pt>
* Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
*
* $Id: addrconf.c,v 1.69 2001/10/31 21:55:54 davem Exp $
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/sockios.h>
-#include <linux/sched.h>
#include <linux/net.h>
#include <linux/in6.h>
#include <linux/netdevice.h>
#include <linux/notifier.h>
#include <linux/string.h>
+#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/snmp.h>
#include <net/tcp.h>
#include <net/ip.h>
#include <net/netlink.h>
+#include <net/pkt_sched.h>
#include <linux/if_tunnel.h>
#include <linux/rtnetlink.h>
#endif
#include <asm/uaccess.h>
+#include <asm/unaligned.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#define TIME_DELTA(a,b) ((unsigned long)((long)(a) - (long)(b)))
#ifdef CONFIG_SYSCTL
-static void addrconf_sysctl_register(struct inet6_dev *idev, struct ipv6_devconf *p);
-static void addrconf_sysctl_unregister(struct ipv6_devconf *p);
+static void addrconf_sysctl_register(struct inet6_dev *idev);
+static void addrconf_sysctl_unregister(struct inet6_dev *idev);
+#else
+static inline void addrconf_sysctl_register(struct inet6_dev *idev)
+{
+}
+
+static inline void addrconf_sysctl_unregister(struct inet6_dev *idev)
+{
+}
#endif
#ifdef CONFIG_IPV6_PRIVACY
static int __ipv6_regen_rndid(struct inet6_dev *idev);
-static int __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr);
+static int __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr);
static void ipv6_regen_rndid(unsigned long data);
static int desync_factor = MAX_DESYNC_FACTOR * HZ;
static struct inet6_ifaddr *inet6_addr_lst[IN6_ADDR_HSIZE];
static DEFINE_RWLOCK(addrconf_hash_lock);
-/* Protects inet6 devices */
-DEFINE_RWLOCK(addrconf_lock);
-
static void addrconf_verify(unsigned long);
static DEFINE_TIMER(addr_chk_timer, addrconf_verify, 0, 0);
static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa);
static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa);
-static void inet6_prefix_notify(int event, struct inet6_dev *idev,
+static void inet6_prefix_notify(int event, struct inet6_dev *idev,
struct prefix_info *pinfo);
-static int ipv6_chk_same_addr(const struct in6_addr *addr, struct net_device *dev);
+static int ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
+ struct net_device *dev);
static ATOMIC_NOTIFIER_HEAD(inet6addr_chain);
.accept_ra_rt_info_max_plen = 0,
#endif
#endif
+ .proxy_ndp = 0,
+ .accept_source_route = 0, /* we do not accept RH0 by default. */
};
static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = {
.accept_ra_rt_info_max_plen = 0,
#endif
#endif
+ .proxy_ndp = 0,
+ .accept_source_route = 0, /* we do not accept RH0 by default. */
};
/* IPv6 Wildcard Address and Loopback Address defined by RFC2553 */
-#if 0
const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
-#endif
const struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT;
-#define IPV6_ADDR_SCOPE_TYPE(scope) ((scope) << 16)
-
-static inline unsigned ipv6_addr_scope2type(unsigned scope)
+/* Check if a valid qdisc is available */
+static inline int addrconf_qdisc_ok(struct net_device *dev)
{
- switch(scope) {
- case IPV6_ADDR_SCOPE_NODELOCAL:
- return (IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_NODELOCAL) |
- IPV6_ADDR_LOOPBACK);
- case IPV6_ADDR_SCOPE_LINKLOCAL:
- return (IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_LINKLOCAL) |
- IPV6_ADDR_LINKLOCAL);
- case IPV6_ADDR_SCOPE_SITELOCAL:
- return (IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_SITELOCAL) |
- IPV6_ADDR_SITELOCAL);
- }
- return IPV6_ADDR_SCOPE_TYPE(scope);
-}
-
-int __ipv6_addr_type(const struct in6_addr *addr)
-{
- u32 st;
-
- st = addr->s6_addr32[0];
-
- /* Consider all addresses with the first three bits different of
- 000 and 111 as unicasts.
- */
- if ((st & htonl(0xE0000000)) != htonl(0x00000000) &&
- (st & htonl(0xE0000000)) != htonl(0xE0000000))
- return (IPV6_ADDR_UNICAST |
- IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL));
-
- if ((st & htonl(0xFF000000)) == htonl(0xFF000000)) {
- /* multicast */
- /* addr-select 3.1 */
- return (IPV6_ADDR_MULTICAST |
- ipv6_addr_scope2type(IPV6_ADDR_MC_SCOPE(addr)));
- }
-
- if ((st & htonl(0xFFC00000)) == htonl(0xFE800000))
- return (IPV6_ADDR_LINKLOCAL | IPV6_ADDR_UNICAST |
- IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_LINKLOCAL)); /* addr-select 3.1 */
- if ((st & htonl(0xFFC00000)) == htonl(0xFEC00000))
- return (IPV6_ADDR_SITELOCAL | IPV6_ADDR_UNICAST |
- IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_SITELOCAL)); /* addr-select 3.1 */
-
- if ((addr->s6_addr32[0] | addr->s6_addr32[1]) == 0) {
- if (addr->s6_addr32[2] == 0) {
- if (addr->s6_addr32[3] == 0)
- return IPV6_ADDR_ANY;
-
- if (addr->s6_addr32[3] == htonl(0x00000001))
- return (IPV6_ADDR_LOOPBACK | IPV6_ADDR_UNICAST |
- IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_LINKLOCAL)); /* addr-select 3.4 */
-
- return (IPV6_ADDR_COMPATv4 | IPV6_ADDR_UNICAST |
- IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); /* addr-select 3.3 */
- }
-
- if (addr->s6_addr32[2] == htonl(0x0000ffff))
- return (IPV6_ADDR_MAPPED |
- IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); /* addr-select 3.3 */
- }
-
- return (IPV6_ADDR_RESERVED |
- IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); /* addr-select 3.4 */
+ return (dev->qdisc != &noop_qdisc);
}
static void addrconf_del_timer(struct inet6_ifaddr *ifp)
add_timer(&ifp->timer);
}
+static int snmp6_alloc_dev(struct inet6_dev *idev)
+{
+ if (snmp_mib_init((void **)idev->stats.ipv6,
+ sizeof(struct ipstats_mib)) < 0)
+ goto err_ip;
+ if (snmp_mib_init((void **)idev->stats.icmpv6,
+ sizeof(struct icmpv6_mib)) < 0)
+ goto err_icmp;
+ if (snmp_mib_init((void **)idev->stats.icmpv6msg,
+ sizeof(struct icmpv6msg_mib)) < 0)
+ goto err_icmpmsg;
+
+ return 0;
+
+err_icmpmsg:
+ snmp_mib_free((void **)idev->stats.icmpv6);
+err_icmp:
+ snmp_mib_free((void **)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);
+}
+
/* Nobody refers to this device, we may destroy it. */
+static void in6_dev_finish_destroy_rcu(struct rcu_head *head)
+{
+ struct inet6_dev *idev = container_of(head, struct inet6_dev, rcu);
+ kfree(idev);
+}
+
void in6_dev_finish_destroy(struct inet6_dev *idev)
{
struct net_device *dev = idev->dev;
return;
}
snmp6_free_dev(idev);
- kfree(idev);
+ call_rcu(&idev->rcu, in6_dev_finish_destroy_rcu);
}
+EXPORT_SYMBOL(in6_dev_finish_destroy);
+
static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
{
struct inet6_dev *ndev;
+ struct in6_addr maddr;
ASSERT_RTNL();
if (dev->mtu < IPV6_MIN_MTU)
return NULL;
- ndev = kzalloc(sizeof(struct inet6_dev), GFP_KERNEL);
+ ndev = kzalloc(sizeof(struct inet6_dev), GFP_KERNEL);
- if (ndev == NULL)
- return NULL;
+ if (ndev == NULL)
+ return NULL;
rwlock_init(&ndev->lock);
ndev->dev = dev;
- memcpy(&ndev->cnf, &ipv6_devconf_dflt, sizeof(ndev->cnf));
+ memcpy(&ndev->cnf, dev->nd_net->ipv6.devconf_dflt, sizeof(ndev->cnf));
ndev->cnf.mtu6 = dev->mtu;
ndev->cnf.sysctl = NULL;
ndev->nd_parms = neigh_parms_alloc(dev, &nd_tbl);
in6_dev_hold(ndev);
#ifdef CONFIG_IPV6_PRIVACY
- init_timer(&ndev->regen_timer);
- ndev->regen_timer.function = ipv6_regen_rndid;
- ndev->regen_timer.data = (unsigned long) ndev;
+ setup_timer(&ndev->regen_timer, ipv6_regen_rndid, (unsigned long)ndev);
if ((dev->flags&IFF_LOOPBACK) ||
dev->type == ARPHRD_TUNNEL ||
- dev->type == ARPHRD_NONE ||
- dev->type == ARPHRD_SIT) {
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
+ dev->type == ARPHRD_SIT ||
+#endif
+ dev->type == ARPHRD_NONE) {
printk(KERN_INFO
"%s: Disabled Privacy Extensions\n",
dev->name);
ndev->cnf.use_tempaddr = -1;
+
+ if (dev->type == ARPHRD_SIT && (dev->priv_flags & IFF_ISATAP)) {
+ printk(KERN_INFO
+ "%s: Disabled Multicast RS\n",
+ dev->name);
+ ndev->cnf.rtr_solicits = 0;
+ }
} else {
in6_dev_hold(ndev);
ipv6_regen_rndid((unsigned long) ndev);
}
#endif
- if (netif_carrier_ok(dev))
+ if (netif_running(dev) && addrconf_qdisc_ok(dev))
ndev->if_flags |= IF_READY;
- write_lock_bh(&addrconf_lock);
- dev->ip6_ptr = ndev;
- write_unlock_bh(&addrconf_lock);
-
ipv6_mc_init_dev(ndev);
ndev->tstamp = jiffies;
-#ifdef CONFIG_SYSCTL
- neigh_sysctl_register(dev, ndev->nd_parms, NET_IPV6,
- NET_IPV6_NEIGH, "ipv6",
- &ndisc_ifinfo_sysctl_change,
- NULL);
- addrconf_sysctl_register(ndev, &ndev->cnf);
-#endif
+ addrconf_sysctl_register(ndev);
+ /* protected by rtnl_lock */
+ rcu_assign_pointer(dev->ip6_ptr, ndev);
+
+ /* Join all-node multicast group */
+ ipv6_addr_all_nodes(&maddr);
+ ipv6_dev_mc_inc(dev, &maddr);
+
return ndev;
}
dev = idev->dev;
if (dev && (dev->flags & IFF_MULTICAST)) {
ipv6_addr_all_routers(&addr);
-
+
if (idev->cnf.forwarding)
ipv6_dev_mc_inc(dev, &addr);
else
ipv6_dev_mc_dec(dev, &addr);
}
for (ifa=idev->addr_list; ifa; ifa=ifa->if_next) {
+ if (ifa->flags&IFA_F_TENTATIVE)
+ continue;
if (idev->cnf.forwarding)
addrconf_join_anycast(ifa);
else
}
-static void addrconf_forward_change(void)
+static void addrconf_forward_change(struct net *net, __s32 newf)
{
struct net_device *dev;
struct inet6_dev *idev;
read_lock(&dev_base_lock);
- for (dev=dev_base; dev; dev=dev->next) {
- read_lock(&addrconf_lock);
+ for_each_netdev(net, dev) {
+ rcu_read_lock();
idev = __in6_dev_get(dev);
if (idev) {
- int changed = (!idev->cnf.forwarding) ^ (!ipv6_devconf.forwarding);
- idev->cnf.forwarding = ipv6_devconf.forwarding;
+ int changed = (!idev->cnf.forwarding) ^ (!newf);
+ idev->cnf.forwarding = newf;
if (changed)
dev_forward_change(idev);
}
- read_unlock(&addrconf_lock);
+ rcu_read_unlock();
}
read_unlock(&dev_base_lock);
}
+
+static void 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;
+
+ if (p == &net->ipv6.devconf_all->forwarding) {
+ __s32 newf = net->ipv6.devconf_all->forwarding;
+ net->ipv6.devconf_dflt->forwarding = newf;
+ addrconf_forward_change(net, newf);
+ } else if ((!*p) ^ (!old))
+ dev_forward_change((struct inet6_dev *)table->extra1);
+
+ if (*p)
+ rt6_purge_dflt_routers();
+}
#endif
/* Nobody refers to this ifaddr, destroy it */
int hash;
int err = 0;
- read_lock_bh(&addrconf_lock);
+ rcu_read_lock_bh();
if (idev->dead) {
err = -ENODEV; /*XXX*/
goto out2;
write_lock(&addrconf_hash_lock);
/* Ignore adding duplicate addresses on an interface */
- if (ipv6_chk_same_addr(addr, idev->dev)) {
+ if (ipv6_chk_same_addr(&init_net, addr, idev->dev)) {
ADBG(("ipv6_add_addr: already assigned\n"));
err = -EEXIST;
goto out;
ifa->rt = rt;
+ /*
+ * part one of RFC 4429, section 3.3
+ * We should not configure an address as
+ * optimistic if we do not yet know the link
+ * layer address of our nexhop router
+ */
+
+ if (rt->rt6i_nexthop == NULL)
+ ifa->flags &= ~IFA_F_OPTIMISTIC;
+
ifa->idev = idev;
in6_dev_hold(idev);
/* For caller */
in6_ifa_hold(ifa);
write_unlock(&idev->lock);
out2:
- read_unlock_bh(&addrconf_lock);
+ rcu_read_unlock_bh();
if (likely(err == 0))
atomic_notifier_call_chain(&inet6addr_chain, NETDEV_UP, ifa);
int tmp_plen;
int ret = 0;
int max_addresses;
+ u32 addr_flags;
write_lock(&idev->lock);
if (ift) {
tmp_valid_lft = min_t(__u32,
ifp->valid_lft,
idev->cnf.temp_valid_lft);
- tmp_prefered_lft = min_t(__u32,
- ifp->prefered_lft,
+ tmp_prefered_lft = min_t(__u32,
+ ifp->prefered_lft,
idev->cnf.temp_prefered_lft - desync_factor / HZ);
tmp_plen = ifp->prefix_len;
max_addresses = idev->cnf.max_addresses;
spin_unlock_bh(&ifp->lock);
write_unlock(&idev->lock);
+
+ addr_flags = IFA_F_TEMPORARY;
+ /* set in addrconf_prefix_rcv() */
+ if (ifp->flags & IFA_F_OPTIMISTIC)
+ addr_flags |= IFA_F_OPTIMISTIC;
+
ift = !max_addresses ||
- ipv6_count_addresses(idev) < max_addresses ?
+ ipv6_count_addresses(idev) < max_addresses ?
ipv6_add_addr(idev, &addr, tmp_plen,
- ipv6_addr_type(&addr)&IPV6_ADDR_SCOPE_MASK, IFA_F_TEMPORARY) : NULL;
+ ipv6_addr_type(&addr)&IPV6_ADDR_SCOPE_MASK,
+ addr_flags) : NULL;
if (!ift || IS_ERR(ift)) {
in6_ifa_put(ifp);
in6_dev_put(idev);
#define IPV6_SADDR_SCORE_LABEL 0x0020
#define IPV6_SADDR_SCORE_PRIVACY 0x0040
-static int inline ipv6_saddr_preferred(int type)
+static inline int ipv6_saddr_preferred(int type)
{
if (type & (IPV6_ADDR_MAPPED|IPV6_ADDR_COMPATv4|
IPV6_ADDR_LOOPBACK|IPV6_ADDR_RESERVED))
return 0;
}
-/* static matching label */
-static int inline ipv6_saddr_label(const struct in6_addr *addr, int type)
-{
- /*
- * prefix (longest match) label
- * -----------------------------
- * ::1/128 0
- * ::/0 1
- * 2002::/16 2
- * ::/96 3
- * ::ffff:0:0/96 4
- * fc00::/7 5
- * 2001::/32 6
- */
- if (type & IPV6_ADDR_LOOPBACK)
- return 0;
- else if (type & IPV6_ADDR_COMPATv4)
- return 3;
- else if (type & IPV6_ADDR_MAPPED)
- return 4;
- else if (addr->s6_addr32[0] == htonl(0x20010000))
- return 6;
- else if (addr->s6_addr16[0] == htons(0x2002))
- return 2;
- else if ((addr->s6_addr[0] & 0xfe) == 0xfc)
- return 5;
- return 1;
-}
-
int ipv6_dev_get_saddr(struct net_device *daddr_dev,
struct in6_addr *daddr, struct in6_addr *saddr)
{
struct inet6_ifaddr *ifa_result = NULL;
int daddr_type = __ipv6_addr_type(daddr);
int daddr_scope = __ipv6_addr_src_scope(daddr_type);
- u32 daddr_label = ipv6_saddr_label(daddr, daddr_type);
+ int daddr_ifindex = daddr_dev ? daddr_dev->ifindex : 0;
+ u32 daddr_label = ipv6_addr_label(daddr, daddr_type, daddr_ifindex);
struct net_device *dev;
memset(&hiscore, 0, sizeof(hiscore));
read_lock(&dev_base_lock);
- read_lock(&addrconf_lock);
+ rcu_read_lock();
- for (dev = dev_base; dev; dev=dev->next) {
+ for_each_netdev(&init_net, dev) {
struct inet6_dev *idev;
struct inet6_ifaddr *ifa;
* - Tentative Address (RFC2462 section 5.4)
* - A tentative address is not considered
* "assigned to an interface" in the traditional
- * sense.
+ * sense, unless it is also flagged as optimistic.
* - Candidate Source Address (section 4)
* - In any case, anycast addresses, multicast
* addresses, and the unspecified address MUST
* NOT be included in a candidate set.
*/
- if (ifa->flags & IFA_F_TENTATIVE)
+ if ((ifa->flags & IFA_F_TENTATIVE) &&
+ (!(ifa->flags & IFA_F_OPTIMISTIC)))
continue;
if (unlikely(score.addr_type == IPV6_ADDR_ANY ||
score.addr_type & IPV6_ADDR_MULTICAST)) {
LIMIT_NETDEBUG(KERN_DEBUG
- "ADDRCONF: unspecified / multicast address"
+ "ADDRCONF: unspecified / multicast address "
"assigned as unicast address on %s",
dev->name);
continue;
}
}
- /* Rule 3: Avoid deprecated address */
+ /* Rule 3: Avoid deprecated and optimistic addresses */
if (hiscore.rule < 3) {
if (ipv6_saddr_preferred(hiscore.addr_type) ||
- !(ifa_result->flags & IFA_F_DEPRECATED))
+ (((ifa_result->flags &
+ (IFA_F_DEPRECATED|IFA_F_OPTIMISTIC)) == 0)))
hiscore.attrs |= IPV6_SADDR_SCORE_PREFERRED;
hiscore.rule++;
}
if (ipv6_saddr_preferred(score.addr_type) ||
- !(ifa->flags & IFA_F_DEPRECATED)) {
+ (((ifa->flags &
+ (IFA_F_DEPRECATED|IFA_F_OPTIMISTIC)) == 0))) {
score.attrs |= IPV6_SADDR_SCORE_PREFERRED;
if (!(hiscore.attrs & IPV6_SADDR_SCORE_PREFERRED)) {
score.rule = 3;
continue;
}
- /* Rule 4: Prefer home address -- not implemented yet */
+ /* Rule 4: Prefer home address */
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
+ if (hiscore.rule < 4) {
+ if (ifa_result->flags & IFA_F_HOMEADDRESS)
+ hiscore.attrs |= IPV6_SADDR_SCORE_HOA;
+ hiscore.rule++;
+ }
+ if (ifa->flags & IFA_F_HOMEADDRESS) {
+ score.attrs |= IPV6_SADDR_SCORE_HOA;
+ if (!(ifa_result->flags & IFA_F_HOMEADDRESS)) {
+ score.rule = 4;
+ goto record_it;
+ }
+ } else {
+ if (hiscore.attrs & IPV6_SADDR_SCORE_HOA)
+ continue;
+ }
+#else
if (hiscore.rule < 4)
hiscore.rule++;
+#endif
/* Rule 5: Prefer outgoing interface */
if (hiscore.rule < 5) {
/* Rule 6: Prefer matching label */
if (hiscore.rule < 6) {
- if (ipv6_saddr_label(&ifa_result->addr, hiscore.addr_type) == daddr_label)
+ if (ipv6_addr_label(&ifa_result->addr,
+ hiscore.addr_type,
+ ifa_result->idev->dev->ifindex) == daddr_label)
hiscore.attrs |= IPV6_SADDR_SCORE_LABEL;
hiscore.rule++;
}
- if (ipv6_saddr_label(&ifa->addr, score.addr_type) == daddr_label) {
+ if (ipv6_addr_label(&ifa->addr,
+ score.addr_type,
+ ifa->idev->dev->ifindex) == daddr_label) {
score.attrs |= IPV6_SADDR_SCORE_LABEL;
if (!(hiscore.attrs & IPV6_SADDR_SCORE_LABEL)) {
score.rule = 6;
}
read_unlock_bh(&idev->lock);
}
- read_unlock(&addrconf_lock);
+ rcu_read_unlock();
read_unlock(&dev_base_lock);
if (!ifa_result)
return -EADDRNOTAVAIL;
-
+
ipv6_addr_copy(saddr, &ifa_result->addr);
in6_ifa_put(ifa_result);
return 0;
int ipv6_get_saddr(struct dst_entry *dst,
struct in6_addr *daddr, struct in6_addr *saddr)
{
- return ipv6_dev_get_saddr(dst ? ((struct rt6_info *)dst)->rt6i_idev->dev : NULL, daddr, saddr);
+ return ipv6_dev_get_saddr(dst ? ip6_dst_idev(dst)->dev : NULL, daddr, saddr);
}
+EXPORT_SYMBOL(ipv6_get_saddr);
-int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr)
+int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
+ unsigned char banned_flags)
{
struct inet6_dev *idev;
int err = -EADDRNOTAVAIL;
- read_lock(&addrconf_lock);
+ rcu_read_lock();
if ((idev = __in6_dev_get(dev)) != NULL) {
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&IFA_F_TENTATIVE)) {
+ if (ifp->scope == IFA_LINK && !(ifp->flags & banned_flags)) {
ipv6_addr_copy(addr, &ifp->addr);
err = 0;
break;
}
read_unlock_bh(&idev->lock);
}
- read_unlock(&addrconf_lock);
+ rcu_read_unlock();
return err;
}
return cnt;
}
-int ipv6_chk_addr(struct in6_addr *addr, struct net_device *dev, int strict)
+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);
read_lock_bh(&addrconf_hash_lock);
for(ifp = inet6_addr_lst[hash]; ifp; ifp=ifp->lst_next) {
+ if (ifp->idev->dev->nd_net != net)
+ continue;
if (ipv6_addr_equal(&ifp->addr, addr) &&
!(ifp->flags&IFA_F_TENTATIVE)) {
if (dev == NULL || ifp->idev->dev == dev ||
read_unlock_bh(&addrconf_hash_lock);
return ifp != NULL;
}
+EXPORT_SYMBOL(ipv6_chk_addr);
static
-int ipv6_chk_same_addr(const struct in6_addr *addr, struct net_device *dev)
+int 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);
for(ifp = inet6_addr_lst[hash]; ifp; ifp=ifp->lst_next) {
+ if (ifp->idev->dev->nd_net != net)
+ continue;
if (ipv6_addr_equal(&ifp->addr, addr)) {
if (dev == NULL || ifp->idev->dev == dev)
break;
return ifp != NULL;
}
-struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr, struct net_device *dev, int strict)
+struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, struct in6_addr *addr,
+ struct net_device *dev, int strict)
{
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) {
+ if (ifp->idev->dev->nd_net != net)
+ continue;
if (ipv6_addr_equal(&ifp->addr, addr)) {
if (dev == NULL || ifp->idev->dev == dev ||
!(ifp->scope&(IFA_LINK|IFA_HOST) || strict)) {
{
const struct in6_addr *sk_rcv_saddr6 = &inet6_sk(sk)->rcv_saddr;
const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2);
- u32 sk_rcv_saddr = inet_sk(sk)->rcv_saddr;
- u32 sk2_rcv_saddr = inet_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);
return addrconf_ifid_arcnet(eui, dev);
case ARPHRD_INFINIBAND:
return addrconf_ifid_infiniband(eui, dev);
+ case ARPHRD_SIT:
+ if (dev->priv_flags & IFF_ISATAP)
+ return ipv6_isatap_eui64(eui, *(__be32 *)dev->dev_addr);
}
return -1;
}
*
* - Reserved subnet anycast (RFC 2526)
* 11111101 11....11 1xxxxxxx
- * - ISATAP (draft-ietf-ngtrans-isatap-13.txt) 5.1
+ * - ISATAP (RFC4214) 6.1
* 00-00-5E-FE-xx-xx-xx-xx
* - value 0
* - XXX: already assigned to an address on the device
*/
- if (idev->rndid[0] == 0xfd &&
+ if (idev->rndid[0] == 0xfd &&
(idev->rndid[1]&idev->rndid[2]&idev->rndid[3]&idev->rndid[4]&idev->rndid[5]&idev->rndid[6]) == 0xff &&
(idev->rndid[7]&0x80))
goto regen;
struct inet6_dev *idev = (struct inet6_dev *) data;
unsigned long expires;
- read_lock_bh(&addrconf_lock);
+ rcu_read_lock_bh();
write_lock_bh(&idev->lock);
if (idev->dead)
if (__ipv6_regen_rndid(idev) < 0)
goto out;
-
+
expires = jiffies +
- idev->cnf.temp_prefered_lft * HZ -
+ idev->cnf.temp_prefered_lft * HZ -
idev->cnf.regen_max_retry * idev->cnf.dad_transmits * idev->nd_parms->retrans_time - desync_factor;
if (time_before(expires, jiffies)) {
printk(KERN_WARNING
out:
write_unlock_bh(&idev->lock);
- read_unlock_bh(&addrconf_lock);
+ rcu_read_unlock_bh();
in6_dev_put(idev);
}
.fc_expires = expires,
.fc_dst_len = plen,
.fc_flags = RTF_UP | flags,
+ .fc_nlinfo.nl_net = &init_net,
};
ipv6_addr_copy(&cfg.fc_dst, pfx);
This thing is done here expecting that the whole
class of non-broadcast devices need not cloning.
*/
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
if (dev->type == ARPHRD_SIT && (dev->flags & IFF_POINTOPOINT))
cfg.fc_flags |= RTF_NONEXTHOP;
+#endif
ip6_route_add(&cfg);
}
.fc_ifindex = dev->ifindex,
.fc_dst_len = 8,
.fc_flags = RTF_UP,
+ .fc_nlinfo.nl_net = &init_net,
};
ipv6_addr_set(&cfg.fc_dst, htonl(0xFF000000), 0, 0, 0);
ip6_route_add(&cfg);
}
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
static void sit_route_add(struct net_device *dev)
{
struct fib6_config cfg = {
.fc_ifindex = dev->ifindex,
.fc_dst_len = 96,
.fc_flags = RTF_UP | RTF_NONEXTHOP,
+ .fc_nlinfo.nl_net = &init_net,
};
/* prefix length - 96 bits "::d.d.d.d" */
ip6_route_add(&cfg);
}
+#endif
static void addrconf_add_lroute(struct net_device *dev)
{
struct inet6_dev *in6_dev;
pinfo = (struct prefix_info *) opt;
-
+
if (len < sizeof(struct prefix_info)) {
ADBG(("addrconf: prefix option too short\n"));
return;
}
-
+
/*
* Validation checks ([ADDRCONF], page 19)
*/
ok:
- ifp = ipv6_get_ifaddr(&addr, dev, 1);
+ ifp = ipv6_get_ifaddr(&init_net, &addr, dev, 1);
if (ifp == NULL && valid_lft) {
int max_addresses = in6_dev->cnf.max_addresses;
+ u32 addr_flags = 0;
+
+#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
+ if (in6_dev->cnf.optimistic_dad &&
+ !ipv6_devconf.forwarding)
+ addr_flags = IFA_F_OPTIMISTIC;
+#endif
/* Do not allow to create too much of autoconfigured
* addresses; this would be too easy way to crash kernel.
if (!max_addresses ||
ipv6_count_addresses(in6_dev) < max_addresses)
ifp = ipv6_add_addr(in6_dev, &addr, pinfo->prefix_len,
- addr_type&IPV6_ADDR_SCOPE_MASK, 0);
+ addr_type&IPV6_ADDR_SCOPE_MASK,
+ addr_flags);
if (!ifp || IS_ERR(ifp)) {
in6_dev_put(in6_dev);
* When a new public address is created as described in [ADDRCONF],
* also create a new temporary address.
*/
- read_unlock_bh(&in6_dev->lock);
+ read_unlock_bh(&in6_dev->lock);
ipv6_create_tempaddr(ifp, NULL);
} else {
read_unlock_bh(&in6_dev->lock);
if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq)))
goto err_exit;
- dev = __dev_get_by_index(ireq.ifr6_ifindex);
+ dev = __dev_get_by_index(&init_net, ireq.ifr6_ifindex);
err = -ENODEV;
if (dev == NULL)
goto err_exit;
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
if (dev->type == ARPHRD_SIT) {
struct ifreq ifr;
mm_segment_t oldfs;
p.iph.ihl = 5;
p.iph.protocol = IPPROTO_IPV6;
p.iph.ttl = 64;
- ifr.ifr_ifru.ifru_data = (void __user *)&p;
+ ifr.ifr_ifru.ifru_data = (__force void __user *)&p;
oldfs = get_fs(); set_fs(KERNEL_DS);
err = dev->do_ioctl(dev, &ifr, SIOCADDTUNNEL);
if (err == 0) {
err = -ENOBUFS;
- if ((dev = __dev_get_by_name(p.name)) == NULL)
+ if ((dev = __dev_get_by_name(&init_net, p.name)) == NULL)
goto err_exit;
err = dev_open(dev);
}
}
+#endif
err_exit:
rtnl_unlock();
* Manual configuration of address on an interface
*/
static int inet6_addr_add(int ifindex, struct in6_addr *pfx, int plen,
- __u32 prefered_lft, __u32 valid_lft)
+ __u8 ifa_flags, __u32 prefered_lft, __u32 valid_lft)
{
struct inet6_ifaddr *ifp;
struct inet6_dev *idev;
struct net_device *dev;
- __u8 ifa_flags = 0;
int scope;
+ u32 flags = RTF_EXPIRES;
ASSERT_RTNL();
-
+
/* check the lifetime */
if (!valid_lft || prefered_lft > valid_lft)
return -EINVAL;
- if ((dev = __dev_get_by_index(ifindex)) == NULL)
+ if ((dev = __dev_get_by_index(&init_net, ifindex)) == NULL)
return -ENODEV;
-
- if (!(dev->flags&IFF_UP))
- return -ENETDOWN;
if ((idev = addrconf_add_dev(dev)) == NULL)
return -ENOBUFS;
scope = ipv6_addr_scope(pfx);
- if (valid_lft == INFINITY_LIFE_TIME)
+ if (valid_lft == INFINITY_LIFE_TIME) {
ifa_flags |= IFA_F_PERMANENT;
- else if (valid_lft >= 0x7FFFFFFF/HZ)
+ flags = 0;
+ } else if (valid_lft >= 0x7FFFFFFF/HZ)
valid_lft = 0x7FFFFFFF/HZ;
if (prefered_lft == 0)
ifp->tstamp = jiffies;
spin_unlock_bh(&ifp->lock);
+ addrconf_prefix_route(&ifp->addr, ifp->prefix_len, dev,
+ jiffies_to_clock_t(valid_lft * HZ), flags);
+ /*
+ * Note that section 3.1 of RFC 4429 indicates
+ * that the Optimistic flag should not be set for
+ * manually configured addresses
+ */
addrconf_dad_start(ifp, 0);
in6_ifa_put(ifp);
addrconf_verify(0);
struct inet6_ifaddr *ifp;
struct inet6_dev *idev;
struct net_device *dev;
-
- if ((dev = __dev_get_by_index(ifindex)) == NULL)
+
+ if ((dev = __dev_get_by_index(&init_net, ifindex)) == NULL)
return -ENODEV;
if ((idev = __in6_dev_get(dev)) == NULL)
ipv6_addr_equal(pfx, &ifp->addr)) {
in6_ifa_hold(ifp);
read_unlock_bh(&idev->lock);
-
+
ipv6_del_addr(ifp);
/* If the last address is deleted administratively,
{
struct in6_ifreq ireq;
int err;
-
+
if (!capable(CAP_NET_ADMIN))
return -EPERM;
-
+
if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq)))
return -EFAULT;
rtnl_lock();
err = inet6_addr_add(ireq.ifr6_ifindex, &ireq.ifr6_addr, ireq.ifr6_prefixlen,
- INFINITY_LIFE_TIME, INFINITY_LIFE_TIME);
+ IFA_F_PERMANENT, INFINITY_LIFE_TIME, INFINITY_LIFE_TIME);
rtnl_unlock();
return err;
}
{
struct in6_ifreq ireq;
int err;
-
+
if (!capable(CAP_NET_ADMIN))
return -EPERM;
return err;
}
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
static void sit_add_v4_addrs(struct inet6_dev *idev)
{
struct inet6_ifaddr * ifp;
return;
}
- for (dev = dev_base; dev != NULL; dev = dev->next) {
+ for_each_netdev(&init_net, dev) {
struct in_device * in_dev = __in_dev_get_rtnl(dev);
if (in_dev && (dev->flags & IFF_UP)) {
struct in_ifaddr * ifa;
}
}
}
- }
+ }
}
+#endif
static void init_loopback(struct net_device *dev)
{
static void addrconf_add_linklocal(struct inet6_dev *idev, struct in6_addr *addr)
{
struct inet6_ifaddr * ifp;
+ u32 addr_flags = IFA_F_PERMANENT;
+
+#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
+ if (idev->cnf.optimistic_dad &&
+ !ipv6_devconf.forwarding)
+ addr_flags |= IFA_F_OPTIMISTIC;
+#endif
+
- ifp = ipv6_add_addr(idev, addr, 64, IFA_LINK, IFA_F_PERMANENT);
+ ifp = ipv6_add_addr(idev, addr, 64, IFA_LINK, addr_flags);
if (!IS_ERR(ifp)) {
+ addrconf_prefix_route(&ifp->addr, ifp->prefix_len, idev->dev, 0, 0);
addrconf_dad_start(ifp, 0);
in6_ifa_put(ifp);
}
ASSERT_RTNL();
- if ((dev->type != ARPHRD_ETHER) &&
+ if ((dev->type != ARPHRD_ETHER) &&
(dev->type != ARPHRD_FDDI) &&
(dev->type != ARPHRD_IEEE802_TR) &&
(dev->type != ARPHRD_ARCNET) &&
addrconf_add_linklocal(idev, &addr);
}
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
static void addrconf_sit_config(struct net_device *dev)
{
struct inet6_dev *idev;
ASSERT_RTNL();
- /*
- * Configure the tunnel with one of our IPv4
- * addresses... we should configure all of
+ /*
+ * Configure the tunnel with one of our IPv4
+ * addresses... we should configure all of
* our v4 addrs in the tunnel
*/
return;
}
+ if (dev->priv_flags & IFF_ISATAP) {
+ struct in6_addr addr;
+
+ ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0);
+ addrconf_prefix_route(&addr, 64, dev, 0, 0);
+ if (!ipv6_generate_eui64(addr.s6_addr + 8, dev))
+ addrconf_add_linklocal(idev, &addr);
+ return;
+ }
+
sit_add_v4_addrs(idev);
if (dev->flags&IFF_POINTOPOINT) {
} else
sit_route_add(dev);
}
+#endif
static inline int
ipv6_inherit_linklocal(struct inet6_dev *idev, struct net_device *link_dev)
{
struct in6_addr lladdr;
- if (!ipv6_get_lladdr(link_dev, &lladdr)) {
+ if (!ipv6_get_lladdr(link_dev, &lladdr, IFA_F_TENTATIVE)) {
addrconf_add_linklocal(idev, &lladdr);
return 0;
}
/* first try to inherit the link-local address from the link device */
if (idev->dev->iflink &&
- (link_dev = __dev_get_by_index(idev->dev->iflink))) {
+ (link_dev = __dev_get_by_index(&init_net, idev->dev->iflink))) {
if (!ipv6_inherit_linklocal(idev, link_dev))
return;
}
/* then try to inherit it from any device */
- for (link_dev = dev_base; link_dev; link_dev = link_dev->next) {
+ for_each_netdev(&init_net, link_dev) {
if (!ipv6_inherit_linklocal(idev, link_dev))
return;
}
ip6_tnl_add_linklocal(idev);
}
-static int addrconf_notify(struct notifier_block *this, unsigned long event,
+static int addrconf_notify(struct notifier_block *this, unsigned long event,
void * data)
{
struct net_device *dev = (struct net_device *) data;
struct inet6_dev *idev = __in6_dev_get(dev);
int run_pending = 0;
+ int err;
+
+ if (dev->nd_net != &init_net)
+ return NOTIFY_DONE;
switch(event) {
+ case NETDEV_REGISTER:
+ if (!idev && dev->mtu >= IPV6_MIN_MTU) {
+ idev = ipv6_add_dev(dev);
+ if (!idev)
+ return notifier_from_errno(-ENOMEM);
+ }
+ break;
case NETDEV_UP:
case NETDEV_CHANGE:
+ if (dev->flags & IFF_SLAVE)
+ break;
+
if (event == NETDEV_UP) {
- if (!netif_carrier_ok(dev)) {
+ if (!addrconf_qdisc_ok(dev)) {
/* device is not ready yet. */
printk(KERN_INFO
"ADDRCONF(NETDEV_UP): %s: "
break;
}
+ if (!idev && dev->mtu >= IPV6_MIN_MTU)
+ idev = ipv6_add_dev(dev);
+
if (idev)
idev->if_flags |= IF_READY;
} else {
- if (!netif_carrier_ok(dev)) {
+ if (!addrconf_qdisc_ok(dev)) {
/* device is still not ready. */
break;
}
}
switch(dev->type) {
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
case ARPHRD_SIT:
addrconf_sit_config(dev);
break;
+#endif
case ARPHRD_TUNNEL6:
addrconf_ip6_tnl_config(dev);
break;
default:
addrconf_dev_config(dev);
break;
- };
+ }
if (idev) {
if (run_pending)
addrconf_dad_run(idev);
break;
case NETDEV_CHANGEMTU:
- if ( idev && dev->mtu >= IPV6_MIN_MTU) {
+ if (idev && dev->mtu >= IPV6_MIN_MTU) {
rt6_mtu_change(dev, dev->mtu);
idev->cnf.mtu6 = dev->mtu;
break;
}
+ if (!idev && dev->mtu >= IPV6_MIN_MTU) {
+ idev = ipv6_add_dev(dev);
+ if (idev)
+ break;
+ }
+
/* MTU falled under IPV6_MIN_MTU. Stop IPv6 on this interface. */
case NETDEV_DOWN:
break;
case NETDEV_CHANGENAME:
-#ifdef CONFIG_SYSCTL
if (idev) {
- addrconf_sysctl_unregister(&idev->cnf);
- neigh_sysctl_unregister(idev->nd_parms);
- neigh_sysctl_register(dev, idev->nd_parms,
- NET_IPV6, NET_IPV6_NEIGH, "ipv6",
- &ndisc_ifinfo_sysctl_change,
- NULL);
- addrconf_sysctl_register(idev, &idev->cnf);
+ snmp6_unregister_dev(idev);
+ addrconf_sysctl_unregister(idev);
+ addrconf_sysctl_register(idev);
+ err = snmp6_register_dev(idev);
+ if (err)
+ return notifier_from_errno(err);
}
-#endif
break;
- };
+ }
return NOTIFY_OK;
}
ASSERT_RTNL();
- if (dev == &loopback_dev && how == 1)
+ if (dev == init_net.loopback_dev && how == 1)
how = 0;
rt6_ifdown(dev);
return -ENODEV;
/* Step 1: remove reference to ipv6 device from parent device.
- Do not dev_put!
+ Do not dev_put!
*/
if (how == 1) {
- write_lock_bh(&addrconf_lock);
- dev->ip6_ptr = NULL;
idev->dead = 1;
- write_unlock_bh(&addrconf_lock);
+
+ /* protected by rtnl_lock */
+ rcu_assign_pointer(dev->ip6_ptr, NULL);
/* Step 1.5: remove snmp6 entry */
snmp6_unregister_dev(idev);
write_unlock_bh(&idev->lock);
__ipv6_ifa_notify(RTM_DELADDR, ifa);
+ atomic_notifier_call_chain(&inet6addr_chain, NETDEV_DOWN, ifa);
in6_ifa_put(ifa);
write_lock_bh(&idev->lock);
else
ipv6_mc_down(idev);
- /* Step 5: netlink notification of this interface */
idev->tstamp = jiffies;
- inet6_ifinfo_notify(RTM_DELLINK, idev);
-
+
/* Shot the device (if unregistered) */
if (how == 1) {
-#ifdef CONFIG_SYSCTL
- addrconf_sysctl_unregister(&idev->cnf);
- neigh_sysctl_unregister(idev->nd_parms);
-#endif
+ addrconf_sysctl_unregister(idev);
neigh_parms_release(&nd_tbl, idev->nd_parms);
neigh_ifdown(&nd_tbl, dev);
in6_dev_put(idev);
unsigned long rand_num;
struct inet6_dev *idev = ifp->idev;
- rand_num = net_random() % (idev->cnf.rtr_solicit_delay ? : 1);
+ if (ifp->flags & IFA_F_OPTIMISTIC)
+ rand_num = 0;
+ else
+ rand_num = net_random() % (idev->cnf.rtr_solicit_delay ? : 1);
+
ifp->probes = idev->cnf.dad_transmits;
addrconf_mod_timer(ifp, AC_DAD, rand_num);
}
addrconf_join_solict(dev, &ifp->addr);
- if (ifp->prefix_len != 128 && (ifp->flags&IFA_F_PERMANENT))
- addrconf_prefix_route(&ifp->addr, ifp->prefix_len, dev, 0,
- flags);
-
net_srandom(ifp->addr.s6_addr32[3]);
read_lock_bh(&idev->lock);
spin_lock_bh(&ifp->lock);
if (dev->flags&(IFF_NOARP|IFF_LOOPBACK) ||
- !(ifp->flags&IFA_F_TENTATIVE)) {
- ifp->flags &= ~IFA_F_TENTATIVE;
+ !(ifp->flags&IFA_F_TENTATIVE) ||
+ ifp->flags & IFA_F_NODAD) {
+ ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC);
spin_unlock_bh(&ifp->lock);
read_unlock_bh(&idev->lock);
addrconf_dad_stop(ifp);
return;
}
+
+ /*
+ * Optimistic nodes can start receiving
+ * Frames right away
+ */
+ if(ifp->flags & IFA_F_OPTIMISTIC)
+ ip6_ins_rt(ifp->rt);
+
addrconf_dad_kick(ifp);
spin_unlock_bh(&ifp->lock);
out:
* DAD was successful
*/
- ifp->flags &= ~IFA_F_TENTATIVE;
+ ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC);
spin_unlock_bh(&ifp->lock);
read_unlock_bh(&idev->lock);
#ifdef CONFIG_PROC_FS
struct if6_iter_state {
+ struct seq_net_private p;
int bucket;
};
{
struct inet6_ifaddr *ifa = NULL;
struct if6_iter_state *state = seq->private;
+ struct net *net = state->p.net;
for (state->bucket = 0; state->bucket < IN6_ADDR_HSIZE; ++state->bucket) {
ifa = inet6_addr_lst[state->bucket];
+
+ while (ifa && ifa->idev->dev->nd_net != net)
+ ifa = ifa->lst_next;
if (ifa)
break;
}
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 = state->p.net;
ifa = ifa->lst_next;
try_again:
+ if (ifa) {
+ if (ifa->idev->dev->nd_net != net) {
+ ifa = ifa->lst_next;
+ goto try_again;
+ }
+ }
+
if (!ifa && ++state->bucket < IN6_ADDR_HSIZE) {
ifa = inet6_addr_lst[state->bucket];
goto try_again;
}
+
return ifa;
}
}
static void *if6_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(addrconf_hash_lock)
{
read_lock_bh(&addrconf_hash_lock);
return if6_get_idx(seq, *pos);
}
static void if6_seq_stop(struct seq_file *seq, void *v)
+ __releases(addrconf_hash_lock)
{
read_unlock_bh(&addrconf_hash_lock);
}
return 0;
}
-static struct seq_operations if6_seq_ops = {
+static const struct seq_operations if6_seq_ops = {
.start = if6_seq_start,
.next = if6_seq_next,
.show = if6_seq_show,
static int if6_seq_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- int rc = -ENOMEM;
- struct if6_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL);
-
- if (!s)
- goto out;
-
- rc = seq_open(file, &if6_seq_ops);
- if (rc)
- goto out_kfree;
-
- seq = file->private_data;
- seq->private = s;
-out:
- return rc;
-out_kfree:
- kfree(s);
- goto out;
+ return seq_open_net(inode, file, &if6_seq_ops,
+ sizeof(struct if6_iter_state));
}
-static struct file_operations if6_fops = {
+static const struct file_operations if6_fops = {
.owner = THIS_MODULE,
.open = if6_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release_private,
+ .release = seq_release_net,
};
-int __init if6_proc_init(void)
+static int if6_proc_net_init(struct net *net)
{
- if (!proc_net_fops_create("if_inet6", S_IRUGO, &if6_fops))
+ 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)
+{
+ proc_net_remove(net, "if_inet6");
+}
+
+static struct pernet_operations if6_proc_net_ops = {
+ .init = if6_proc_net_init,
+ .exit = if6_proc_net_exit,
+};
+
+int __init if6_proc_init(void)
+{
+ return register_pernet_subsys(&if6_proc_net_ops);
+}
+
void if6_proc_exit(void)
{
- proc_net_remove("if_inet6");
+ unregister_pernet_subsys(&if6_proc_net_ops);
}
#endif /* CONFIG_PROC_FS */
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
+/* Check if address is a home address configured on any interface. */
+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) {
+ if (ifp->idev->dev->nd_net != net)
+ continue;
+ if (ipv6_addr_cmp(&ifp->addr, addr) == 0 &&
+ (ifp->flags & IFA_F_HOMEADDRESS)) {
+ ret = 1;
+ break;
+ }
+ }
+ read_unlock_bh(&addrconf_hash_lock);
+ return ret;
+}
+#endif
+
/*
* Periodic address status verification
*/
age = (now - ifp->tstamp) / HZ;
#ifdef CONFIG_IPV6_PRIVACY
- regen_advance = ifp->idev->cnf.regen_max_retry *
- ifp->idev->cnf.dad_transmits *
+ regen_advance = ifp->idev->cnf.regen_max_retry *
+ ifp->idev->cnf.dad_transmits *
ifp->idev->nd_parms->retrans_time / HZ;
#endif
return pfx;
}
-static struct nla_policy ifa_ipv6_policy[IFA_MAX+1] __read_mostly = {
+static const struct nla_policy ifa_ipv6_policy[IFA_MAX+1] = {
[IFA_ADDRESS] = { .len = sizeof(struct in6_addr) },
[IFA_LOCAL] = { .len = sizeof(struct in6_addr) },
[IFA_CACHEINFO] = { .len = sizeof(struct ifa_cacheinfo) },
static int
inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
+ struct net *net = skb->sk->sk_net;
struct ifaddrmsg *ifm;
struct nlattr *tb[IFA_MAX+1];
struct in6_addr *pfx;
int err;
+ if (net != &init_net)
+ return -EINVAL;
+
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
if (err < 0)
return err;
return inet6_addr_del(ifm->ifa_index, pfx, ifm->ifa_prefixlen);
}
-static int
-inet6_addr_modify(int ifindex, struct in6_addr *pfx,
- __u32 prefered_lft, __u32 valid_lft)
+static int inet6_addr_modify(struct inet6_ifaddr *ifp, u8 ifa_flags,
+ u32 prefered_lft, u32 valid_lft)
{
- struct inet6_ifaddr *ifp = NULL;
- struct net_device *dev;
- int ifa_flags = 0;
-
- if ((dev = __dev_get_by_index(ifindex)) == NULL)
- return -ENODEV;
-
- if (!(dev->flags&IFF_UP))
- return -ENETDOWN;
+ u32 flags = RTF_EXPIRES;
if (!valid_lft || (prefered_lft > valid_lft))
return -EINVAL;
- ifp = ipv6_get_ifaddr(pfx, dev, 1);
- if (ifp == NULL)
- return -ENOENT;
-
- if (valid_lft == INFINITY_LIFE_TIME)
- ifa_flags = IFA_F_PERMANENT;
- else if (valid_lft >= 0x7FFFFFFF/HZ)
+ if (valid_lft == INFINITY_LIFE_TIME) {
+ ifa_flags |= IFA_F_PERMANENT;
+ flags = 0;
+ } else if (valid_lft >= 0x7FFFFFFF/HZ)
valid_lft = 0x7FFFFFFF/HZ;
if (prefered_lft == 0)
- ifa_flags = IFA_F_DEPRECATED;
+ ifa_flags |= IFA_F_DEPRECATED;
else if ((prefered_lft >= 0x7FFFFFFF/HZ) &&
(prefered_lft != INFINITY_LIFE_TIME))
prefered_lft = 0x7FFFFFFF/HZ;
spin_lock_bh(&ifp->lock);
- ifp->flags = (ifp->flags & ~(IFA_F_DEPRECATED|IFA_F_PERMANENT)) | ifa_flags;
-
+ ifp->flags = (ifp->flags & ~(IFA_F_DEPRECATED | IFA_F_PERMANENT | IFA_F_NODAD | IFA_F_HOMEADDRESS)) | ifa_flags;
ifp->tstamp = jiffies;
ifp->valid_lft = valid_lft;
ifp->prefered_lft = prefered_lft;
spin_unlock_bh(&ifp->lock);
if (!(ifp->flags&IFA_F_TENTATIVE))
ipv6_ifa_notify(0, ifp);
- in6_ifa_put(ifp);
+ addrconf_prefix_route(&ifp->addr, ifp->prefix_len, ifp->idev->dev,
+ jiffies_to_clock_t(valid_lft * HZ), flags);
addrconf_verify(0);
return 0;
static int
inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
+ struct net *net = skb->sk->sk_net;
struct ifaddrmsg *ifm;
struct nlattr *tb[IFA_MAX+1];
struct in6_addr *pfx;
- u32 valid_lft, preferred_lft;
+ struct inet6_ifaddr *ifa;
+ struct net_device *dev;
+ u32 valid_lft = INFINITY_LIFE_TIME, preferred_lft = INFINITY_LIFE_TIME;
+ u8 ifa_flags;
int err;
+ if (net != &init_net)
+ return -EINVAL;
+
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
if (err < 0)
return err;
valid_lft = INFINITY_LIFE_TIME;
}
- if (nlh->nlmsg_flags & NLM_F_REPLACE) {
- err = inet6_addr_modify(ifm->ifa_index, pfx,
- preferred_lft, valid_lft);
- if (err == 0 || !(nlh->nlmsg_flags & NLM_F_CREATE))
- return err;
+ dev = __dev_get_by_index(&init_net, ifm->ifa_index);
+ if (dev == NULL)
+ return -ENODEV;
+
+ /* We ignore other flags so far. */
+ ifa_flags = ifm->ifa_flags & (IFA_F_NODAD | IFA_F_HOMEADDRESS);
+
+ ifa = ipv6_get_ifaddr(net, pfx, dev, 1);
+ if (ifa == NULL) {
+ /*
+ * It would be best to check for !NLM_F_CREATE here but
+ * userspace alreay relies on not having to provide this.
+ */
+ return inet6_addr_add(ifm->ifa_index, pfx, ifm->ifa_prefixlen,
+ ifa_flags, preferred_lft, valid_lft);
}
- return inet6_addr_add(ifm->ifa_index, pfx, ifm->ifa_prefixlen,
- preferred_lft, valid_lft);
+ if (nlh->nlmsg_flags & NLM_F_EXCL ||
+ !(nlh->nlmsg_flags & NLM_F_REPLACE))
+ err = -EEXIST;
+ else
+ err = inet6_addr_modify(ifa, ifa_flags, preferred_lft, valid_lft);
+
+ in6_ifa_put(ifa);
+
+ return err;
}
-/* Maximum length of ifa_cacheinfo attributes */
-#define INET6_IFADDR_RTA_SPACE \
- RTA_SPACE(16) /* IFA_ADDRESS */ + \
- RTA_SPACE(sizeof(struct ifa_cacheinfo)) /* CACHEINFO */
+static void put_ifaddrmsg(struct nlmsghdr *nlh, u8 prefixlen, u8 flags,
+ u8 scope, int ifindex)
+{
+ struct ifaddrmsg *ifm;
+
+ ifm = nlmsg_data(nlh);
+ ifm->ifa_family = AF_INET6;
+ ifm->ifa_prefixlen = prefixlen;
+ ifm->ifa_flags = flags;
+ ifm->ifa_scope = scope;
+ ifm->ifa_index = ifindex;
+}
+
+static int put_cacheinfo(struct sk_buff *skb, unsigned long cstamp,
+ unsigned long tstamp, u32 preferred, u32 valid)
+{
+ struct ifa_cacheinfo ci;
+
+ ci.cstamp = (u32)(TIME_DELTA(cstamp, INITIAL_JIFFIES) / HZ * 100
+ + TIME_DELTA(cstamp, INITIAL_JIFFIES) % HZ * 100 / HZ);
+ ci.tstamp = (u32)(TIME_DELTA(tstamp, INITIAL_JIFFIES) / HZ * 100
+ + TIME_DELTA(tstamp, INITIAL_JIFFIES) % HZ * 100 / HZ);
+ ci.ifa_prefered = preferred;
+ ci.ifa_valid = valid;
+
+ return nla_put(skb, IFA_CACHEINFO, sizeof(ci), &ci);
+}
+
+static inline int rt_scope(int ifa_scope)
+{
+ if (ifa_scope & IFA_HOST)
+ return RT_SCOPE_HOST;
+ else if (ifa_scope & IFA_LINK)
+ return RT_SCOPE_LINK;
+ else if (ifa_scope & IFA_SITE)
+ return RT_SCOPE_SITE;
+ else
+ return RT_SCOPE_UNIVERSE;
+}
+
+static inline int inet6_ifaddr_msgsize(void)
+{
+ return NLMSG_ALIGN(sizeof(struct ifaddrmsg))
+ + nla_total_size(16) /* IFA_ADDRESS */
+ + nla_total_size(sizeof(struct ifa_cacheinfo));
+}
static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
u32 pid, u32 seq, int event, unsigned int flags)
{
- struct ifaddrmsg *ifm;
struct nlmsghdr *nlh;
- struct ifa_cacheinfo ci;
- unsigned char *b = skb->tail;
+ u32 preferred, valid;
+
+ nlh = nlmsg_put(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+
+ put_ifaddrmsg(nlh, ifa->prefix_len, ifa->flags, rt_scope(ifa->scope),
+ ifa->idev->dev->ifindex);
- nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*ifm), flags);
- ifm = NLMSG_DATA(nlh);
- ifm->ifa_family = AF_INET6;
- ifm->ifa_prefixlen = ifa->prefix_len;
- ifm->ifa_flags = ifa->flags;
- ifm->ifa_scope = RT_SCOPE_UNIVERSE;
- if (ifa->scope&IFA_HOST)
- ifm->ifa_scope = RT_SCOPE_HOST;
- else if (ifa->scope&IFA_LINK)
- ifm->ifa_scope = RT_SCOPE_LINK;
- else if (ifa->scope&IFA_SITE)
- ifm->ifa_scope = RT_SCOPE_SITE;
- ifm->ifa_index = ifa->idev->dev->ifindex;
- RTA_PUT(skb, IFA_ADDRESS, 16, &ifa->addr);
if (!(ifa->flags&IFA_F_PERMANENT)) {
- ci.ifa_prefered = ifa->prefered_lft;
- ci.ifa_valid = ifa->valid_lft;
- if (ci.ifa_prefered != INFINITY_LIFE_TIME) {
+ preferred = ifa->prefered_lft;
+ valid = ifa->valid_lft;
+ if (preferred != INFINITY_LIFE_TIME) {
long tval = (jiffies - ifa->tstamp)/HZ;
- ci.ifa_prefered -= tval;
- if (ci.ifa_valid != INFINITY_LIFE_TIME)
- ci.ifa_valid -= tval;
+ preferred -= tval;
+ if (valid != INFINITY_LIFE_TIME)
+ valid -= tval;
}
} else {
- ci.ifa_prefered = INFINITY_LIFE_TIME;
- ci.ifa_valid = INFINITY_LIFE_TIME;
+ preferred = INFINITY_LIFE_TIME;
+ valid = INFINITY_LIFE_TIME;
}
- ci.cstamp = (__u32)(TIME_DELTA(ifa->cstamp, INITIAL_JIFFIES) / HZ * 100
- + TIME_DELTA(ifa->cstamp, INITIAL_JIFFIES) % HZ * 100 / HZ);
- ci.tstamp = (__u32)(TIME_DELTA(ifa->tstamp, INITIAL_JIFFIES) / HZ * 100
- + TIME_DELTA(ifa->tstamp, INITIAL_JIFFIES) % HZ * 100 / HZ);
- RTA_PUT(skb, IFA_CACHEINFO, sizeof(ci), &ci);
- nlh->nlmsg_len = skb->tail - b;
- return skb->len;
-nlmsg_failure:
-rtattr_failure:
- skb_trim(skb, b - skb->data);
- return -1;
+ if (nla_put(skb, IFA_ADDRESS, 16, &ifa->addr) < 0 ||
+ put_cacheinfo(skb, ifa->cstamp, ifa->tstamp, preferred, valid) < 0) {
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
+ }
+
+ return nlmsg_end(skb, nlh);
}
static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
u32 pid, u32 seq, int event, u16 flags)
{
- struct ifaddrmsg *ifm;
struct nlmsghdr *nlh;
- struct ifa_cacheinfo ci;
- unsigned char *b = skb->tail;
-
- nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*ifm), flags);
- ifm = NLMSG_DATA(nlh);
- ifm->ifa_family = AF_INET6;
- ifm->ifa_prefixlen = 128;
- ifm->ifa_flags = IFA_F_PERMANENT;
- ifm->ifa_scope = RT_SCOPE_UNIVERSE;
- if (ipv6_addr_scope(&ifmca->mca_addr)&IFA_SITE)
- ifm->ifa_scope = RT_SCOPE_SITE;
- ifm->ifa_index = ifmca->idev->dev->ifindex;
- RTA_PUT(skb, IFA_MULTICAST, 16, &ifmca->mca_addr);
- ci.cstamp = (__u32)(TIME_DELTA(ifmca->mca_cstamp, INITIAL_JIFFIES) / HZ
- * 100 + TIME_DELTA(ifmca->mca_cstamp, INITIAL_JIFFIES) % HZ
- * 100 / HZ);
- ci.tstamp = (__u32)(TIME_DELTA(ifmca->mca_tstamp, INITIAL_JIFFIES) / HZ
- * 100 + TIME_DELTA(ifmca->mca_tstamp, INITIAL_JIFFIES) % HZ
- * 100 / HZ);
- ci.ifa_prefered = INFINITY_LIFE_TIME;
- ci.ifa_valid = INFINITY_LIFE_TIME;
- RTA_PUT(skb, IFA_CACHEINFO, sizeof(ci), &ci);
- nlh->nlmsg_len = skb->tail - b;
- return skb->len;
+ u8 scope = RT_SCOPE_UNIVERSE;
+ int ifindex = ifmca->idev->dev->ifindex;
+
+ if (ipv6_addr_scope(&ifmca->mca_addr) & IFA_SITE)
+ scope = RT_SCOPE_SITE;
+
+ nlh = nlmsg_put(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+
+ put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex);
+ if (nla_put(skb, IFA_MULTICAST, 16, &ifmca->mca_addr) < 0 ||
+ put_cacheinfo(skb, ifmca->mca_cstamp, ifmca->mca_tstamp,
+ INFINITY_LIFE_TIME, INFINITY_LIFE_TIME) < 0) {
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
+ }
-nlmsg_failure:
-rtattr_failure:
- skb_trim(skb, b - skb->data);
- return -1;
+ return nlmsg_end(skb, nlh);
}
static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca,
u32 pid, u32 seq, int event, unsigned int flags)
{
- struct ifaddrmsg *ifm;
struct nlmsghdr *nlh;
- struct ifa_cacheinfo ci;
- unsigned char *b = skb->tail;
-
- nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*ifm), flags);
- ifm = NLMSG_DATA(nlh);
- ifm->ifa_family = AF_INET6;
- ifm->ifa_prefixlen = 128;
- ifm->ifa_flags = IFA_F_PERMANENT;
- ifm->ifa_scope = RT_SCOPE_UNIVERSE;
- if (ipv6_addr_scope(&ifaca->aca_addr)&IFA_SITE)
- ifm->ifa_scope = RT_SCOPE_SITE;
- ifm->ifa_index = ifaca->aca_idev->dev->ifindex;
- RTA_PUT(skb, IFA_ANYCAST, 16, &ifaca->aca_addr);
- ci.cstamp = (__u32)(TIME_DELTA(ifaca->aca_cstamp, INITIAL_JIFFIES) / HZ
- * 100 + TIME_DELTA(ifaca->aca_cstamp, INITIAL_JIFFIES) % HZ
- * 100 / HZ);
- ci.tstamp = (__u32)(TIME_DELTA(ifaca->aca_tstamp, INITIAL_JIFFIES) / HZ
- * 100 + TIME_DELTA(ifaca->aca_tstamp, INITIAL_JIFFIES) % HZ
- * 100 / HZ);
- ci.ifa_prefered = INFINITY_LIFE_TIME;
- ci.ifa_valid = INFINITY_LIFE_TIME;
- RTA_PUT(skb, IFA_CACHEINFO, sizeof(ci), &ci);
- nlh->nlmsg_len = skb->tail - b;
- return skb->len;
+ u8 scope = RT_SCOPE_UNIVERSE;
+ int ifindex = ifaca->aca_idev->dev->ifindex;
+
+ if (ipv6_addr_scope(&ifaca->aca_addr) & IFA_SITE)
+ scope = RT_SCOPE_SITE;
+
+ nlh = nlmsg_put(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+
+ put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex);
+ if (nla_put(skb, IFA_ANYCAST, 16, &ifaca->aca_addr) < 0 ||
+ put_cacheinfo(skb, ifaca->aca_cstamp, ifaca->aca_tstamp,
+ INFINITY_LIFE_TIME, INFINITY_LIFE_TIME) < 0) {
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
+ }
-nlmsg_failure:
-rtattr_failure:
- skb_trim(skb, b - skb->data);
- return -1;
+ return nlmsg_end(skb, nlh);
}
enum addr_type_t
s_idx = cb->args[0];
s_ip_idx = ip_idx = cb->args[1];
- read_lock(&dev_base_lock);
-
- for (dev = dev_base, idx = 0; dev; dev = dev->next, idx++) {
+
+ idx = 0;
+ for_each_netdev(&init_net, dev) {
if (idx < s_idx)
- continue;
+ goto cont;
if (idx > s_idx)
s_ip_idx = 0;
ip_idx = 0;
if ((idev = in6_dev_get(dev)) == NULL)
- continue;
+ goto cont;
read_lock_bh(&idev->lock);
switch (type) {
case UNICAST_ADDR:
ifa = ifa->if_next, ip_idx++) {
if (ip_idx < s_ip_idx)
continue;
- if ((err = inet6_fill_ifaddr(skb, ifa,
- NETLINK_CB(cb->skb).pid,
- cb->nlh->nlmsg_seq, RTM_NEWADDR,
- NLM_F_MULTI)) <= 0)
- goto done;
+ err = inet6_fill_ifaddr(skb, ifa,
+ NETLINK_CB(cb->skb).pid,
+ cb->nlh->nlmsg_seq,
+ RTM_NEWADDR,
+ NLM_F_MULTI);
}
break;
case MULTICAST_ADDR:
/* multicast address */
- for (ifmca = idev->mc_list; ifmca;
+ for (ifmca = idev->mc_list; ifmca;
ifmca = ifmca->next, ip_idx++) {
if (ip_idx < s_ip_idx)
continue;
- if ((err = inet6_fill_ifmcaddr(skb, ifmca,
- NETLINK_CB(cb->skb).pid,
- cb->nlh->nlmsg_seq, RTM_GETMULTICAST,
- NLM_F_MULTI)) <= 0)
- goto done;
+ err = inet6_fill_ifmcaddr(skb, ifmca,
+ NETLINK_CB(cb->skb).pid,
+ cb->nlh->nlmsg_seq,
+ RTM_GETMULTICAST,
+ NLM_F_MULTI);
}
break;
case ANYCAST_ADDR:
ifaca = ifaca->aca_next, ip_idx++) {
if (ip_idx < s_ip_idx)
continue;
- if ((err = inet6_fill_ifacaddr(skb, ifaca,
- NETLINK_CB(cb->skb).pid,
- cb->nlh->nlmsg_seq, RTM_GETANYCAST,
- NLM_F_MULTI)) <= 0)
- goto done;
+ err = inet6_fill_ifacaddr(skb, ifaca,
+ NETLINK_CB(cb->skb).pid,
+ cb->nlh->nlmsg_seq,
+ RTM_GETANYCAST,
+ NLM_F_MULTI);
}
break;
default:
}
read_unlock_bh(&idev->lock);
in6_dev_put(idev);
+
+ if (err <= 0)
+ break;
+cont:
+ idx++;
}
-done:
- if (err <= 0) {
- read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
- }
- read_unlock(&dev_base_lock);
cb->args[0] = idx;
cb->args[1] = ip_idx;
return skb->len;
static int inet6_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
{
+ struct net *net = skb->sk->sk_net;
enum addr_type_t type = UNICAST_ADDR;
+
+ if (net != &init_net)
+ return 0;
+
return inet6_dump_addr(skb, cb, type);
}
static int inet6_dump_ifmcaddr(struct sk_buff *skb, struct netlink_callback *cb)
{
+ struct net *net = skb->sk->sk_net;
enum addr_type_t type = MULTICAST_ADDR;
+
+ if (net != &init_net)
+ return 0;
+
return inet6_dump_addr(skb, cb, type);
}
static int inet6_dump_ifacaddr(struct sk_buff *skb, struct netlink_callback *cb)
{
+ struct net *net = skb->sk->sk_net;
enum addr_type_t type = ANYCAST_ADDR;
+
+ if (net != &init_net)
+ return 0;
+
return inet6_dump_addr(skb, cb, type);
}
static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr* nlh,
void *arg)
{
+ struct net *net = in_skb->sk->sk_net;
struct ifaddrmsg *ifm;
struct nlattr *tb[IFA_MAX+1];
struct in6_addr *addr = NULL;
struct net_device *dev = NULL;
struct inet6_ifaddr *ifa;
struct sk_buff *skb;
- int payload = sizeof(struct ifaddrmsg) + INET6_IFADDR_RTA_SPACE;
int err;
+ if (net != &init_net)
+ return -EINVAL;
+
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
if (err < 0)
goto errout;
ifm = nlmsg_data(nlh);
if (ifm->ifa_index)
- dev = __dev_get_by_index(ifm->ifa_index);
+ dev = __dev_get_by_index(&init_net, ifm->ifa_index);
- if ((ifa = ipv6_get_ifaddr(addr, dev, 1)) == NULL) {
+ if ((ifa = ipv6_get_ifaddr(net, addr, dev, 1)) == NULL) {
err = -EADDRNOTAVAIL;
goto errout;
}
- if ((skb = nlmsg_new(nlmsg_total_size(payload), GFP_KERNEL)) == NULL) {
+ if ((skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_KERNEL)) == NULL) {
err = -ENOBUFS;
goto errout_ifa;
}
err = inet6_fill_ifaddr(skb, ifa, NETLINK_CB(in_skb).pid,
nlh->nlmsg_seq, RTM_NEWADDR, 0);
if (err < 0) {
+ /* -EMSGSIZE implies BUG in inet6_ifaddr_msgsize() */
+ WARN_ON(err == -EMSGSIZE);
kfree_skb(skb);
goto errout_ifa;
}
-
- err = rtnl_unicast(skb, NETLINK_CB(in_skb).pid);
+ err = rtnl_unicast(skb, &init_net, NETLINK_CB(in_skb).pid);
errout_ifa:
in6_ifa_put(ifa);
errout:
static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa)
{
struct sk_buff *skb;
- int payload = sizeof(struct ifaddrmsg) + INET6_IFADDR_RTA_SPACE;
int err = -ENOBUFS;
- skb = nlmsg_new(nlmsg_total_size(payload), GFP_ATOMIC);
+ skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_ATOMIC);
if (skb == NULL)
goto errout;
err = inet6_fill_ifaddr(skb, ifa, 0, 0, event, 0);
if (err < 0) {
+ /* -EMSGSIZE implies BUG in inet6_ifaddr_msgsize() */
+ WARN_ON(err == -EMSGSIZE);
kfree_skb(skb);
goto errout;
}
-
- err = rtnl_notify(skb, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC);
+ err = rtnl_notify(skb, &init_net, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC);
errout:
if (err < 0)
- rtnl_set_sk_err(RTNLGRP_IPV6_IFADDR, err);
+ rtnl_set_sk_err(&init_net, RTNLGRP_IPV6_IFADDR, err);
}
-static void inline ipv6_store_devconf(struct ipv6_devconf *cnf,
+static inline void ipv6_store_devconf(struct ipv6_devconf *cnf,
__s32 *array, int bytes)
{
+ BUG_ON(bytes < (DEVCONF_MAX * 4));
+
memset(array, 0, bytes);
array[DEVCONF_FORWARDING] = cnf->forwarding;
array[DEVCONF_HOPLIMIT] = cnf->hop_limit;
#ifdef CONFIG_IPV6_ROUTER_PREF
array[DEVCONF_ACCEPT_RA_RTR_PREF] = cnf->accept_ra_rtr_pref;
array[DEVCONF_RTR_PROBE_INTERVAL] = cnf->rtr_probe_interval;
-#ifdef CONFIV_IPV6_ROUTE_INFO
+#ifdef CONFIG_IPV6_ROUTE_INFO
array[DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN] = cnf->accept_ra_rt_info_max_plen;
#endif
#endif
+ array[DEVCONF_PROXY_NDP] = cnf->proxy_ndp;
+ array[DEVCONF_ACCEPT_SOURCE_ROUTE] = cnf->accept_source_route;
+#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
+ array[DEVCONF_OPTIMISTIC_DAD] = cnf->optimistic_dad;
+#endif
+}
+
+static inline size_t inet6_if_nlmsg_size(void)
+{
+ return NLMSG_ALIGN(sizeof(struct ifinfomsg))
+ + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
+ + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
+ + nla_total_size(4) /* IFLA_MTU */
+ + nla_total_size(4) /* IFLA_LINK */
+ + nla_total_size( /* IFLA_PROTINFO */
+ nla_total_size(4) /* IFLA_INET6_FLAGS */
+ + nla_total_size(sizeof(struct ifla_cacheinfo))
+ + nla_total_size(DEVCONF_MAX * 4) /* IFLA_INET6_CONF */
+ + nla_total_size(IPSTATS_MIB_MAX * 8) /* IFLA_INET6_STATS */
+ + nla_total_size(ICMP6_MIB_MAX * 8) /* IFLA_INET6_ICMP6STATS */
+ );
+}
+
+static inline void __snmp6_fill_stats(u64 *stats, void **mib, int items,
+ int bytes)
+{
+ int i;
+ int pad = bytes - sizeof(u64) * items;
+ BUG_ON(pad < 0);
+
+ /* Use put_unaligned() because stats may not be aligned for u64. */
+ put_unaligned(items, &stats[0]);
+ for (i = 1; i < items; i++)
+ put_unaligned(snmp_fold_field(mib, i), &stats[i]);
+
+ memset(&stats[items], 0, pad);
+}
+
+static void snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype,
+ int bytes)
+{
+ switch(attrtype) {
+ case IFLA_INET6_STATS:
+ __snmp6_fill_stats(stats, (void **)idev->stats.ipv6, IPSTATS_MIB_MAX, bytes);
+ break;
+ case IFLA_INET6_ICMP6STATS:
+ __snmp6_fill_stats(stats, (void **)idev->stats.icmpv6, ICMP6_MIB_MAX, bytes);
+ break;
+ }
}
-/* Maximum length of ifinfomsg attributes */
-#define INET6_IFINFO_RTA_SPACE \
- RTA_SPACE(IFNAMSIZ) /* IFNAME */ + \
- RTA_SPACE(MAX_ADDR_LEN) /* ADDRESS */ + \
- RTA_SPACE(sizeof(u32)) /* MTU */ + \
- RTA_SPACE(sizeof(int)) /* LINK */ + \
- RTA_SPACE(0) /* PROTINFO */ + \
- RTA_SPACE(sizeof(u32)) /* FLAGS */ + \
- RTA_SPACE(sizeof(struct ifla_cacheinfo)) /* CACHEINFO */ + \
- RTA_SPACE(sizeof(__s32[DEVCONF_MAX])) /* CONF */
-
-static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev,
+static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev,
u32 pid, u32 seq, int event, unsigned int flags)
{
- struct net_device *dev = idev->dev;
- __s32 *array = NULL;
- struct ifinfomsg *r;
- struct nlmsghdr *nlh;
- unsigned char *b = skb->tail;
- struct rtattr *subattr;
- __u32 mtu = dev->mtu;
- struct ifla_cacheinfo ci;
-
- nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*r), flags);
- r = NLMSG_DATA(nlh);
- r->ifi_family = AF_INET6;
- r->__ifi_pad = 0;
- r->ifi_type = dev->type;
- r->ifi_index = dev->ifindex;
- r->ifi_flags = dev_get_flags(dev);
- r->ifi_change = 0;
-
- RTA_PUT(skb, IFLA_IFNAME, strlen(dev->name)+1, dev->name);
+ struct net_device *dev = idev->dev;
+ struct nlattr *nla;
+ struct ifinfomsg *hdr;
+ struct nlmsghdr *nlh;
+ void *protoinfo;
+ struct ifla_cacheinfo ci;
+
+ nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+
+ hdr = nlmsg_data(nlh);
+ hdr->ifi_family = AF_INET6;
+ hdr->__ifi_pad = 0;
+ hdr->ifi_type = dev->type;
+ hdr->ifi_index = dev->ifindex;
+ hdr->ifi_flags = dev_get_flags(dev);
+ hdr->ifi_change = 0;
+
+ NLA_PUT_STRING(skb, IFLA_IFNAME, dev->name);
if (dev->addr_len)
- RTA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr);
+ NLA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr);
- RTA_PUT(skb, IFLA_MTU, sizeof(mtu), &mtu);
+ NLA_PUT_U32(skb, IFLA_MTU, dev->mtu);
if (dev->ifindex != dev->iflink)
- RTA_PUT(skb, IFLA_LINK, sizeof(int), &dev->iflink);
-
- subattr = (struct rtattr*)skb->tail;
+ NLA_PUT_U32(skb, IFLA_LINK, dev->iflink);
- RTA_PUT(skb, IFLA_PROTINFO, 0, NULL);
+ protoinfo = nla_nest_start(skb, IFLA_PROTINFO);
+ if (protoinfo == NULL)
+ goto nla_put_failure;
- /* return the device flags */
- RTA_PUT(skb, IFLA_INET6_FLAGS, sizeof(__u32), &idev->if_flags);
+ NLA_PUT_U32(skb, IFLA_INET6_FLAGS, idev->if_flags);
- /* return interface cacheinfo */
ci.max_reasm_len = IPV6_MAXPLEN;
ci.tstamp = (__u32)(TIME_DELTA(idev->tstamp, INITIAL_JIFFIES) / HZ * 100
+ TIME_DELTA(idev->tstamp, INITIAL_JIFFIES) % HZ * 100 / HZ);
ci.reachable_time = idev->nd_parms->reachable_time;
ci.retrans_time = idev->nd_parms->retrans_time;
- RTA_PUT(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci);
-
- /* return the device sysctl params */
- if ((array = kmalloc(DEVCONF_MAX * sizeof(*array), GFP_ATOMIC)) == NULL)
- goto rtattr_failure;
- ipv6_store_devconf(&idev->cnf, array, DEVCONF_MAX * sizeof(*array));
- RTA_PUT(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(*array), array);
-
- /* XXX - Statistics/MC not implemented */
- subattr->rta_len = skb->tail - (u8*)subattr;
-
- nlh->nlmsg_len = skb->tail - b;
- kfree(array);
- return skb->len;
+ NLA_PUT(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci);
-nlmsg_failure:
-rtattr_failure:
- kfree(array);
- skb_trim(skb, b - skb->data);
- return -1;
+ nla = nla_reserve(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(s32));
+ if (nla == NULL)
+ goto nla_put_failure;
+ ipv6_store_devconf(&idev->cnf, nla_data(nla), nla_len(nla));
+
+ /* XXX - MC not implemented */
+
+ nla = nla_reserve(skb, IFLA_INET6_STATS, IPSTATS_MIB_MAX * sizeof(u64));
+ if (nla == NULL)
+ goto nla_put_failure;
+ snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_STATS, nla_len(nla));
+
+ nla = nla_reserve(skb, IFLA_INET6_ICMP6STATS, ICMP6_MIB_MAX * sizeof(u64));
+ if (nla == NULL)
+ goto nla_put_failure;
+ snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_ICMP6STATS, nla_len(nla));
+
+ nla_nest_end(skb, protoinfo);
+ return nlmsg_end(skb, nlh);
+
+nla_put_failure:
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
}
static int inet6_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
{
+ struct net *net = skb->sk->sk_net;
int idx, err;
int s_idx = cb->args[0];
struct net_device *dev;
struct inet6_dev *idev;
+ if (net != &init_net)
+ return 0;
+
read_lock(&dev_base_lock);
- for (dev=dev_base, idx=0; dev; dev = dev->next, idx++) {
+ idx = 0;
+ for_each_netdev(&init_net, dev) {
if (idx < s_idx)
- continue;
+ goto cont;
if ((idev = in6_dev_get(dev)) == NULL)
- continue;
- err = inet6_fill_ifinfo(skb, idev, NETLINK_CB(cb->skb).pid,
+ goto cont;
+ err = inet6_fill_ifinfo(skb, idev, NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq, RTM_NEWLINK, NLM_F_MULTI);
in6_dev_put(idev);
if (err <= 0)
break;
+cont:
+ idx++;
}
read_unlock(&dev_base_lock);
cb->args[0] = idx;
void inet6_ifinfo_notify(int event, struct inet6_dev *idev)
{
struct sk_buff *skb;
- int payload = sizeof(struct ifinfomsg) + INET6_IFINFO_RTA_SPACE;
int err = -ENOBUFS;
-
- skb = nlmsg_new(nlmsg_total_size(payload), GFP_ATOMIC);
+
+ skb = nlmsg_new(inet6_if_nlmsg_size(), GFP_ATOMIC);
if (skb == NULL)
goto errout;
err = inet6_fill_ifinfo(skb, idev, 0, 0, event, 0);
if (err < 0) {
+ /* -EMSGSIZE implies BUG in inet6_if_nlmsg_size() */
+ WARN_ON(err == -EMSGSIZE);
kfree_skb(skb);
goto errout;
}
-
- err = rtnl_notify(skb, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC);
+ err = rtnl_notify(skb, &init_net, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC);
errout:
if (err < 0)
- rtnl_set_sk_err(RTNLGRP_IPV6_IFADDR, err);
+ rtnl_set_sk_err(&init_net, RTNLGRP_IPV6_IFADDR, err);
}
-/* Maximum length of prefix_cacheinfo attributes */
-#define INET6_PREFIX_RTA_SPACE \
- RTA_SPACE(sizeof(((struct prefix_info *)NULL)->prefix)) /* ADDRESS */ + \
- RTA_SPACE(sizeof(struct prefix_cacheinfo)) /* CACHEINFO */
+static inline size_t inet6_prefix_nlmsg_size(void)
+{
+ return NLMSG_ALIGN(sizeof(struct prefixmsg))
+ + nla_total_size(sizeof(struct in6_addr))
+ + nla_total_size(sizeof(struct prefix_cacheinfo));
+}
static int inet6_fill_prefix(struct sk_buff *skb, struct inet6_dev *idev,
- struct prefix_info *pinfo, u32 pid, u32 seq,
- int event, unsigned int flags)
+ struct prefix_info *pinfo, u32 pid, u32 seq,
+ int event, unsigned int flags)
{
- struct prefixmsg *pmsg;
- struct nlmsghdr *nlh;
- unsigned char *b = skb->tail;
+ struct prefixmsg *pmsg;
+ struct nlmsghdr *nlh;
struct prefix_cacheinfo ci;
- nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*pmsg), flags);
- pmsg = NLMSG_DATA(nlh);
+ nlh = nlmsg_put(skb, pid, seq, event, sizeof(*pmsg), flags);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+
+ pmsg = nlmsg_data(nlh);
pmsg->prefix_family = AF_INET6;
pmsg->prefix_pad1 = 0;
pmsg->prefix_pad2 = 0;
pmsg->prefix_len = pinfo->prefix_len;
pmsg->prefix_type = pinfo->type;
pmsg->prefix_pad3 = 0;
-
pmsg->prefix_flags = 0;
if (pinfo->onlink)
pmsg->prefix_flags |= IF_PREFIX_ONLINK;
if (pinfo->autoconf)
pmsg->prefix_flags |= IF_PREFIX_AUTOCONF;
- RTA_PUT(skb, PREFIX_ADDRESS, sizeof(pinfo->prefix), &pinfo->prefix);
+ NLA_PUT(skb, PREFIX_ADDRESS, sizeof(pinfo->prefix), &pinfo->prefix);
ci.preferred_time = ntohl(pinfo->prefered);
ci.valid_time = ntohl(pinfo->valid);
- RTA_PUT(skb, PREFIX_CACHEINFO, sizeof(ci), &ci);
+ NLA_PUT(skb, PREFIX_CACHEINFO, sizeof(ci), &ci);
- nlh->nlmsg_len = skb->tail - b;
- return skb->len;
+ return nlmsg_end(skb, nlh);
-nlmsg_failure:
-rtattr_failure:
- skb_trim(skb, b - skb->data);
- return -1;
+nla_put_failure:
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
}
-static void inet6_prefix_notify(int event, struct inet6_dev *idev,
+static void inet6_prefix_notify(int event, struct inet6_dev *idev,
struct prefix_info *pinfo)
{
struct sk_buff *skb;
- int payload = sizeof(struct prefixmsg) + INET6_PREFIX_RTA_SPACE;
int err = -ENOBUFS;
- skb = nlmsg_new(nlmsg_total_size(payload), GFP_ATOMIC);
+ skb = nlmsg_new(inet6_prefix_nlmsg_size(), GFP_ATOMIC);
if (skb == NULL)
goto errout;
err = inet6_fill_prefix(skb, idev, pinfo, 0, 0, event, 0);
if (err < 0) {
+ /* -EMSGSIZE implies BUG in inet6_prefix_nlmsg_size() */
+ WARN_ON(err == -EMSGSIZE);
kfree_skb(skb);
goto errout;
}
-
- err = rtnl_notify(skb, 0, RTNLGRP_IPV6_PREFIX, NULL, GFP_ATOMIC);
+ err = rtnl_notify(skb, &init_net, 0, RTNLGRP_IPV6_PREFIX, NULL, GFP_ATOMIC);
errout:
if (err < 0)
- rtnl_set_sk_err(RTNLGRP_IPV6_PREFIX, err);
+ rtnl_set_sk_err(&init_net, RTNLGRP_IPV6_PREFIX, err);
}
-static struct rtnetlink_link inet6_rtnetlink_table[RTM_NR_MSGTYPES] = {
- [RTM_GETLINK - RTM_BASE] = { .dumpit = inet6_dump_ifinfo, },
- [RTM_NEWADDR - RTM_BASE] = { .doit = inet6_rtm_newaddr, },
- [RTM_DELADDR - RTM_BASE] = { .doit = inet6_rtm_deladdr, },
- [RTM_GETADDR - RTM_BASE] = { .doit = inet6_rtm_getaddr,
- .dumpit = inet6_dump_ifaddr, },
- [RTM_GETMULTICAST - RTM_BASE] = { .dumpit = inet6_dump_ifmcaddr, },
- [RTM_GETANYCAST - RTM_BASE] = { .dumpit = inet6_dump_ifacaddr, },
- [RTM_NEWROUTE - RTM_BASE] = { .doit = inet6_rtm_newroute, },
- [RTM_DELROUTE - RTM_BASE] = { .doit = inet6_rtm_delroute, },
- [RTM_GETROUTE - RTM_BASE] = { .doit = inet6_rtm_getroute,
- .dumpit = inet6_dump_fib, },
-#ifdef CONFIG_IPV6_MULTIPLE_TABLES
- [RTM_GETRULE - RTM_BASE] = { .dumpit = fib6_rules_dump, },
-#endif
-};
-
static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
{
inet6_ifa_notify(event ? : RTM_NEWADDR, ifp);
switch (event) {
case RTM_NEWADDR:
- ip6_ins_rt(ifp->rt);
+ /*
+ * If the address was optimistic
+ * we inserted the route at the start of
+ * our DAD process, so we don't need
+ * to do it again
+ */
+ if (!(ifp->rt->rt6i_node))
+ ip6_ins_rt(ifp->rt);
if (ifp->idev->cnf.forwarding)
addrconf_join_anycast(ifp);
break;
static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
{
- read_lock_bh(&addrconf_lock);
+ rcu_read_lock_bh();
if (likely(ifp->idev->dead == 0))
__ipv6_ifa_notify(event, ifp);
- read_unlock_bh(&addrconf_lock);
+ rcu_read_unlock_bh();
}
#ifdef CONFIG_SYSCTL
ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
- if (write && valp != &ipv6_devconf_dflt.forwarding) {
- if (valp != &ipv6_devconf.forwarding) {
- if ((!*valp) ^ (!val)) {
- struct inet6_dev *idev = (struct inet6_dev *)ctl->extra1;
- if (idev == NULL)
- return ret;
- dev_forward_change(idev);
- }
- } else {
- ipv6_devconf_dflt.forwarding = ipv6_devconf.forwarding;
- addrconf_forward_change();
- }
- if (*valp)
- rt6_purge_dflt_routers();
- }
-
- return ret;
+ if (write)
+ addrconf_fixup_forwarding(ctl, valp, val);
+ return ret;
}
-static int addrconf_sysctl_forward_strategy(ctl_table *table,
+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,
- void **context)
+ void __user *newval, size_t newlen)
{
int *valp = table->data;
+ int val = *valp;
int new;
if (!newval || !newlen)
}
}
- if (valp != &ipv6_devconf_dflt.forwarding) {
- if (valp != &ipv6_devconf.forwarding) {
- struct inet6_dev *idev = (struct inet6_dev *)table->extra1;
- int changed;
- if (unlikely(idev == NULL))
- return -ENODEV;
- changed = (!*valp) ^ (!new);
- *valp = new;
- if (changed)
- dev_forward_change(idev);
- } else {
- *valp = new;
- addrconf_forward_change();
- }
-
- if (*valp)
- rt6_purge_dflt_routers();
- } else
- *valp = new;
-
+ *valp = new;
+ addrconf_fixup_forwarding(table, valp, val);
return 1;
}
{
struct ctl_table_header *sysctl_header;
ctl_table addrconf_vars[__NET_IPV6_MAX];
- ctl_table addrconf_dev[2];
- ctl_table addrconf_conf_dir[2];
- ctl_table addrconf_proto_dir[2];
- ctl_table addrconf_root_dir[2];
+ char *dev_name;
} addrconf_sysctl __read_mostly = {
.sysctl_header = NULL,
.addrconf_vars = {
- {
+ {
.ctl_name = NET_IPV6_FORWARDING,
.procname = "forwarding",
- .data = &ipv6_devconf.forwarding,
+ .data = &ipv6_devconf.forwarding,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &addrconf_sysctl_forward,
+ .proc_handler = &addrconf_sysctl_forward,
.strategy = &addrconf_sysctl_forward_strategy,
},
{
.ctl_name = NET_IPV6_HOP_LIMIT,
.procname = "hop_limit",
- .data = &ipv6_devconf.hop_limit,
+ .data = &ipv6_devconf.hop_limit,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
.ctl_name = NET_IPV6_MTU,
.procname = "mtu",
.data = &ipv6_devconf.mtu6,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = &proc_dointvec,
},
{
.ctl_name = NET_IPV6_ACCEPT_RA,
.procname = "accept_ra",
- .data = &ipv6_devconf.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,
.procname = "accept_redirects",
- .data = &ipv6_devconf.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,
.procname = "autoconf",
- .data = &ipv6_devconf.autoconf,
+ .data = &ipv6_devconf.autoconf,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = &proc_dointvec,
},
{
.ctl_name = NET_IPV6_DAD_TRANSMITS,
.procname = "dad_transmits",
- .data = &ipv6_devconf.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,
.procname = "router_solicitations",
- .data = &ipv6_devconf.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,
.procname = "router_solicitation_interval",
- .data = &ipv6_devconf.rtr_solicit_interval,
+ .data = &ipv6_devconf.rtr_solicit_interval,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
+ .proc_handler = &proc_dointvec_jiffies,
.strategy = &sysctl_jiffies,
},
{
.ctl_name = NET_IPV6_RTR_SOLICIT_DELAY,
.procname = "router_solicitation_delay",
- .data = &ipv6_devconf.rtr_solicit_delay,
+ .data = &ipv6_devconf.rtr_solicit_delay,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
+ .proc_handler = &proc_dointvec_jiffies,
.strategy = &sysctl_jiffies,
},
{
.ctl_name = NET_IPV6_FORCE_MLD_VERSION,
.procname = "force_mld_version",
- .data = &ipv6_devconf.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
{
.ctl_name = NET_IPV6_USE_TEMPADDR,
.procname = "use_tempaddr",
- .data = &ipv6_devconf.use_tempaddr,
+ .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,
.procname = "temp_valid_lft",
- .data = &ipv6_devconf.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,
.procname = "temp_prefered_lft",
- .data = &ipv6_devconf.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,
.procname = "regen_max_retry",
- .data = &ipv6_devconf.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,
.procname = "max_desync_factor",
- .data = &ipv6_devconf.max_desync_factor,
+ .data = &ipv6_devconf.max_desync_factor,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = &proc_dointvec,
},
#endif
{
{
.ctl_name = NET_IPV6_ACCEPT_RA_DEFRTR,
.procname = "accept_ra_defrtr",
- .data = &ipv6_devconf.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,
.procname = "accept_ra_pinfo",
- .data = &ipv6_devconf.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
{
.proc_handler = &proc_dointvec_jiffies,
.strategy = &sysctl_jiffies,
},
-#ifdef CONFIV_IPV6_ROUTE_INFO
+#ifdef CONFIG_IPV6_ROUTE_INFO
{
.ctl_name = NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN,
.procname = "accept_ra_rt_info_max_plen",
#endif
#endif
{
- .ctl_name = 0, /* sentinel */
- }
- },
- .addrconf_dev = {
- {
- .ctl_name = NET_PROTO_CONF_ALL,
- .procname = "all",
- .mode = 0555,
- .child = addrconf_sysctl.addrconf_vars,
- },
- {
- .ctl_name = 0, /* sentinel */
- }
- },
- .addrconf_conf_dir = {
- {
- .ctl_name = NET_IPV6_CONF,
- .procname = "conf",
- .mode = 0555,
- .child = addrconf_sysctl.addrconf_dev,
+ .ctl_name = NET_IPV6_PROXY_NDP,
+ .procname = "proxy_ndp",
+ .data = &ipv6_devconf.proxy_ndp,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
},
{
- .ctl_name = 0, /* sentinel */
- }
- },
- .addrconf_proto_dir = {
- {
- .ctl_name = NET_IPV6,
- .procname = "ipv6",
- .mode = 0555,
- .child = addrconf_sysctl.addrconf_conf_dir,
+ .ctl_name = NET_IPV6_ACCEPT_SOURCE_ROUTE,
+ .procname = "accept_source_route",
+ .data = &ipv6_devconf.accept_source_route,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
},
+#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
{
- .ctl_name = 0, /* sentinel */
- }
- },
- .addrconf_root_dir = {
- {
- .ctl_name = CTL_NET,
- .procname = "net",
- .mode = 0555,
- .child = addrconf_sysctl.addrconf_proto_dir,
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "optimistic_dad",
+ .data = &ipv6_devconf.optimistic_dad,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+
},
+#endif
{
.ctl_name = 0, /* sentinel */
}
},
};
-static void addrconf_sysctl_register(struct inet6_dev *idev, struct ipv6_devconf *p)
+static int __addrconf_sysctl_register(struct net *net, char *dev_name,
+ int ctl_name, struct inet6_dev *idev, struct ipv6_devconf *p)
{
int i;
- struct net_device *dev = idev ? idev->dev : NULL;
struct addrconf_sysctl_table *t;
- char *dev_name = NULL;
- t = kmalloc(sizeof(*t), GFP_KERNEL);
+#define ADDRCONF_CTL_PATH_DEV 3
+
+ struct ctl_path addrconf_ctl_path[] = {
+ { .procname = "net", .ctl_name = CTL_NET, },
+ { .procname = "ipv6", .ctl_name = NET_IPV6, },
+ { .procname = "conf", .ctl_name = NET_IPV6_CONF, },
+ { /* to be set */ },
+ { },
+ };
+
+
+ t = kmemdup(&addrconf_sysctl, sizeof(*t), GFP_KERNEL);
if (t == NULL)
- return;
- memcpy(t, &addrconf_sysctl, sizeof(*t));
+ goto out;
+
for (i=0; t->addrconf_vars[i].data; i++) {
t->addrconf_vars[i].data += (char*)p - (char*)&ipv6_devconf;
- t->addrconf_vars[i].de = NULL;
t->addrconf_vars[i].extra1 = idev; /* embedded; no ref */
- }
- if (dev) {
- dev_name = dev->name;
- t->addrconf_dev[0].ctl_name = dev->ifindex;
- } else {
- dev_name = "default";
- t->addrconf_dev[0].ctl_name = NET_PROTO_CONF_DEFAULT;
+ t->addrconf_vars[i].extra2 = net;
}
- /*
- * Make a copy of dev_name, because '.procname' is regarded as const
+ /*
+ * Make a copy of dev_name, because '.procname' is regarded as const
* by sysctl and we wouldn't want anyone to change it under our feet
* (see SIOCSIFNAME).
- */
- dev_name = kstrdup(dev_name, GFP_KERNEL);
- if (!dev_name)
- goto free;
-
- t->addrconf_dev[0].procname = dev_name;
-
- t->addrconf_dev[0].child = t->addrconf_vars;
- t->addrconf_dev[0].de = NULL;
- t->addrconf_conf_dir[0].child = t->addrconf_dev;
- t->addrconf_conf_dir[0].de = NULL;
- t->addrconf_proto_dir[0].child = t->addrconf_conf_dir;
- t->addrconf_proto_dir[0].de = NULL;
- t->addrconf_root_dir[0].child = t->addrconf_proto_dir;
- t->addrconf_root_dir[0].de = NULL;
-
- t->sysctl_header = register_sysctl_table(t->addrconf_root_dir, 0);
+ */
+ t->dev_name = kstrdup(dev_name, GFP_KERNEL);
+ if (!t->dev_name)
+ goto free;
+
+ addrconf_ctl_path[ADDRCONF_CTL_PATH_DEV].procname = t->dev_name;
+ addrconf_ctl_path[ADDRCONF_CTL_PATH_DEV].ctl_name = ctl_name;
+
+ t->sysctl_header = register_net_sysctl_table(net, addrconf_ctl_path,
+ t->addrconf_vars);
if (t->sysctl_header == NULL)
goto free_procname;
- else
- p->sysctl = t;
- return;
- /* error path */
- free_procname:
- kfree(dev_name);
- free:
+ p->sysctl = t;
+ return 0;
+
+free_procname:
+ kfree(t->dev_name);
+free:
kfree(t);
+out:
+ return -ENOBUFS;
+}
+
+static void __addrconf_sysctl_unregister(struct ipv6_devconf *p)
+{
+ struct addrconf_sysctl_table *t;
+
+ if (p->sysctl == NULL)
+ return;
- return;
+ t = p->sysctl;
+ p->sysctl = NULL;
+ unregister_sysctl_table(t->sysctl_header);
+ kfree(t->dev_name);
+ kfree(t);
}
-static void addrconf_sysctl_unregister(struct ipv6_devconf *p)
+static void addrconf_sysctl_register(struct inet6_dev *idev)
{
- if (p->sysctl) {
- struct addrconf_sysctl_table *t = p->sysctl;
- p->sysctl = NULL;
- unregister_sysctl_table(t->sysctl_header);
- kfree(t->addrconf_dev[0].procname);
- kfree(t);
- }
+ neigh_sysctl_register(idev->dev, idev->nd_parms, NET_IPV6,
+ NET_IPV6_NEIGH, "ipv6",
+ &ndisc_ifinfo_sysctl_change,
+ NULL);
+ __addrconf_sysctl_register(idev->dev->nd_net, idev->dev->name,
+ idev->dev->ifindex, idev, &idev->cnf);
}
+static void addrconf_sysctl_unregister(struct inet6_dev *idev)
+{
+ __addrconf_sysctl_unregister(&idev->cnf);
+ neigh_sysctl_unregister(idev->nd_parms);
+}
+
+#endif
+
+static int addrconf_init_net(struct net *net)
+{
+ int err;
+ struct ipv6_devconf *all, *dflt;
+
+ err = -ENOMEM;
+ all = &ipv6_devconf;
+ dflt = &ipv6_devconf_dflt;
+
+ if (net != &init_net) {
+ all = kmemdup(all, sizeof(ipv6_devconf), GFP_KERNEL);
+ if (all == NULL)
+ goto err_alloc_all;
+
+ dflt = kmemdup(dflt, sizeof(ipv6_devconf_dflt), GFP_KERNEL);
+ if (dflt == NULL)
+ goto err_alloc_dflt;
+ }
+
+ net->ipv6.devconf_all = all;
+ net->ipv6.devconf_dflt = dflt;
+
+#ifdef CONFIG_SYSCTL
+ err = __addrconf_sysctl_register(net, "all", NET_PROTO_CONF_ALL,
+ NULL, all);
+ if (err < 0)
+ goto err_reg_all;
+
+ err = __addrconf_sysctl_register(net, "default", NET_PROTO_CONF_DEFAULT,
+ NULL, dflt);
+ if (err < 0)
+ goto err_reg_dflt;
#endif
+ return 0;
+
+#ifdef CONFIG_SYSCTL
+err_reg_dflt:
+ __addrconf_sysctl_unregister(all);
+err_reg_all:
+ kfree(dflt);
+#endif
+err_alloc_dflt:
+ kfree(all);
+err_alloc_all:
+ return err;
+}
+
+static void addrconf_exit_net(struct net *net)
+{
+#ifdef CONFIG_SYSCTL
+ __addrconf_sysctl_unregister(net->ipv6.devconf_dflt);
+ __addrconf_sysctl_unregister(net->ipv6.devconf_all);
+#endif
+ if (net != &init_net) {
+ kfree(net->ipv6.devconf_dflt);
+ kfree(net->ipv6.devconf_all);
+ }
+}
+
+static struct pernet_operations addrconf_ops = {
+ .init = addrconf_init_net,
+ .exit = addrconf_exit_net,
+};
/*
* Device notifier
int register_inet6addr_notifier(struct notifier_block *nb)
{
- return atomic_notifier_chain_register(&inet6addr_chain, 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);
+
/*
* Init / cleanup code
*/
int __init addrconf_init(void)
{
- int err = 0;
+ int err;
+
+ if ((err = ipv6_addr_label_init()) < 0) {
+ printk(KERN_CRIT "IPv6 Addrconf: cannot initialize default policy table: %d.\n",
+ err);
+ return err;
+ }
+
+ register_pernet_subsys(&addrconf_ops);
/* The addrconf netdev notifier requires that loopback_dev
* has it's ipv6 private information allocated and setup
* device and it being up should be removed.
*/
rtnl_lock();
- if (!ipv6_add_dev(&loopback_dev))
+ if (!ipv6_add_dev(init_net.loopback_dev))
err = -ENOMEM;
rtnl_unlock();
if (err)
- return err;
+ goto errlo;
- ip6_null_entry.rt6i_idev = in6_dev_get(&loopback_dev);
+ ip6_null_entry.u.dst.dev = init_net.loopback_dev;
+ ip6_null_entry.rt6i_idev = in6_dev_get(init_net.loopback_dev);
+#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+ ip6_prohibit_entry.u.dst.dev = init_net.loopback_dev;
+ ip6_prohibit_entry.rt6i_idev = in6_dev_get(init_net.loopback_dev);
+ ip6_blk_hole_entry.u.dst.dev = init_net.loopback_dev;
+ ip6_blk_hole_entry.rt6i_idev = in6_dev_get(init_net.loopback_dev);
+#endif
register_netdevice_notifier(&ipv6_dev_notf);
addrconf_verify(0);
- rtnetlink_links[PF_INET6] = inet6_rtnetlink_table;
-#ifdef CONFIG_SYSCTL
- addrconf_sysctl.sysctl_header =
- register_sysctl_table(addrconf_sysctl.addrconf_root_dir, 0);
- addrconf_sysctl_register(NULL, &ipv6_devconf_dflt);
-#endif
+
+ err = __rtnl_register(PF_INET6, RTM_GETLINK, NULL, inet6_dump_ifinfo);
+ if (err < 0)
+ goto errout;
+
+ /* Only the first call to __rtnl_register can fail */
+ __rtnl_register(PF_INET6, RTM_NEWADDR, inet6_rtm_newaddr, NULL);
+ __rtnl_register(PF_INET6, RTM_DELADDR, inet6_rtm_deladdr, NULL);
+ __rtnl_register(PF_INET6, RTM_GETADDR, inet6_rtm_getaddr, inet6_dump_ifaddr);
+ __rtnl_register(PF_INET6, RTM_GETMULTICAST, NULL, inet6_dump_ifmcaddr);
+ __rtnl_register(PF_INET6, RTM_GETANYCAST, NULL, inet6_dump_ifacaddr);
+
+ ipv6_addr_label_rtnl_register();
return 0;
+errout:
+ unregister_netdevice_notifier(&ipv6_dev_notf);
+errlo:
+ unregister_pernet_subsys(&addrconf_ops);
+
+ return err;
}
-void __exit addrconf_cleanup(void)
+void addrconf_cleanup(void)
{
- struct net_device *dev;
- struct inet6_dev *idev;
- struct inet6_ifaddr *ifa;
+ struct net_device *dev;
+ struct inet6_ifaddr *ifa;
int i;
unregister_netdevice_notifier(&ipv6_dev_notf);
- rtnetlink_links[PF_INET6] = NULL;
-#ifdef CONFIG_SYSCTL
- addrconf_sysctl_unregister(&ipv6_devconf_dflt);
- addrconf_sysctl_unregister(&ipv6_devconf);
-#endif
+ unregister_pernet_subsys(&addrconf_ops);
rtnl_lock();
* clean dev list.
*/
- for (dev=dev_base; dev; dev=dev->next) {
- if ((idev = __in6_dev_get(dev)) == NULL)
+ for_each_netdev(&init_net, dev) {
+ if (__in6_dev_get(dev) == NULL)
continue;
addrconf_ifdown(dev, 1);
}
- addrconf_ifdown(&loopback_dev, 2);
+ addrconf_ifdown(init_net.loopback_dev, 2);
/*
* Check hash table.
del_timer(&addr_chk_timer);
rtnl_unlock();
-
-#ifdef CONFIG_PROC_FS
- proc_net_remove("if_inet6");
-#endif
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff