#include <linux/net.h>
#include <linux/in6.h>
#include <linux/netdevice.h>
+#include <linux/if_addr.h>
#include <linux/if_arp.h>
#include <linux/if_arcnet.h>
#include <linux/if_infiniband.h>
#include <net/addrconf.h>
#include <net/tcp.h>
#include <net/ip.h>
+#include <net/netlink.h>
#include <linux/if_tunnel.h>
#include <linux/rtnetlink.h>
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 ATOMIC_NOTIFIER_HEAD(inet6addr_chain);
-struct ipv6_devconf ipv6_devconf = {
+struct ipv6_devconf ipv6_devconf __read_mostly = {
.forwarding = 0,
.hop_limit = IPV6_DEFAULT_HOPLIMIT,
.mtu6 = IPV6_MIN_MTU,
.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 = {
+static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = {
.forwarding = 0,
.hop_limit = IPV6_DEFAULT_HOPLIMIT,
.mtu6 = IPV6_MIN_MTU,
.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 */
int __ipv6_addr_type(const struct in6_addr *addr)
{
- u32 st;
+ __be32 st;
st = addr->s6_addr32[0];
/* 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);
}
static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
{
struct inet6_dev *ndev;
+ struct in6_addr maddr;
ASSERT_RTNL();
ndev->regen_timer.data = (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);
if (netif_carrier_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;
NULL);
addrconf_sysctl_register(ndev, &ndev->cnf);
#endif
+ /* 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;
}
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
read_lock(&dev_base_lock);
for (dev=dev_base; dev; dev=dev->next) {
- read_lock(&addrconf_lock);
+ rcu_read_lock();
idev = __in6_dev_get(dev);
if (idev) {
int changed = (!idev->cnf.forwarding) ^ (!ipv6_devconf.forwarding);
if (changed)
dev_forward_change(idev);
}
- read_unlock(&addrconf_lock);
+ rcu_read_unlock();
}
read_unlock(&dev_base_lock);
}
int hash;
int err = 0;
- read_lock_bh(&addrconf_lock);
+ rcu_read_lock_bh();
if (idev->dead) {
err = -ENODEV; /*XXX*/
goto out2;
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);
if (rt && ((rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0)) {
if (onlink == 0) {
- ip6_del_rt(rt, NULL, NULL, NULL);
+ ip6_del_rt(rt);
rt = NULL;
} else if (!(rt->rt6i_flags & RTF_EXPIRES)) {
rt->rt6i_expires = expires;
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) {
struct inet6_dev *idev;
continue;
}
- /* Rule 4: Prefer home address -- not implemented yet */
+ /* Rule 4: Prefer home address */
+#ifdef CONFIG_IPV6_MIP6
+ 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) {
}
read_unlock_bh(&idev->lock);
}
- read_unlock(&addrconf_lock);
+ rcu_read_unlock();
read_unlock(&dev_base_lock);
if (!ifa_result)
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);
}
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_unlock_bh(&idev->lock);
}
- read_unlock(&addrconf_lock);
+ rcu_read_unlock();
return err;
}
{
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);
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)
out:
write_unlock_bh(&idev->lock);
- read_unlock_bh(&addrconf_lock);
+ rcu_read_unlock_bh();
in6_dev_put(idev);
}
addrconf_prefix_route(struct in6_addr *pfx, int plen, struct net_device *dev,
unsigned long expires, u32 flags)
{
- struct in6_rtmsg rtmsg;
+ struct fib6_config cfg = {
+ .fc_table = RT6_TABLE_PREFIX,
+ .fc_metric = IP6_RT_PRIO_ADDRCONF,
+ .fc_ifindex = dev->ifindex,
+ .fc_expires = expires,
+ .fc_dst_len = plen,
+ .fc_flags = RTF_UP | flags,
+ };
- memset(&rtmsg, 0, sizeof(rtmsg));
- ipv6_addr_copy(&rtmsg.rtmsg_dst, pfx);
- rtmsg.rtmsg_dst_len = plen;
- rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
- rtmsg.rtmsg_ifindex = dev->ifindex;
- rtmsg.rtmsg_info = expires;
- rtmsg.rtmsg_flags = RTF_UP|flags;
- rtmsg.rtmsg_type = RTMSG_NEWROUTE;
+ ipv6_addr_copy(&cfg.fc_dst, pfx);
/* Prevent useless cloning on PtP SIT.
This thing is done here expecting that the whole
class of non-broadcast devices need not cloning.
*/
- if (dev->type == ARPHRD_SIT && (dev->flags&IFF_POINTOPOINT))
- rtmsg.rtmsg_flags |= RTF_NONEXTHOP;
+#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(&rtmsg, NULL, NULL, NULL);
+ ip6_route_add(&cfg);
}
/* Create "default" multicast route to the interface */
static void addrconf_add_mroute(struct net_device *dev)
{
- struct in6_rtmsg rtmsg;
-
- memset(&rtmsg, 0, sizeof(rtmsg));
- ipv6_addr_set(&rtmsg.rtmsg_dst,
- htonl(0xFF000000), 0, 0, 0);
- rtmsg.rtmsg_dst_len = 8;
- rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
- rtmsg.rtmsg_ifindex = dev->ifindex;
- rtmsg.rtmsg_flags = RTF_UP;
- rtmsg.rtmsg_type = RTMSG_NEWROUTE;
- ip6_route_add(&rtmsg, NULL, NULL, NULL);
+ struct fib6_config cfg = {
+ .fc_table = RT6_TABLE_LOCAL,
+ .fc_metric = IP6_RT_PRIO_ADDRCONF,
+ .fc_ifindex = dev->ifindex,
+ .fc_dst_len = 8,
+ .fc_flags = RTF_UP,
+ };
+
+ 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 in6_rtmsg rtmsg;
-
- memset(&rtmsg, 0, sizeof(rtmsg));
-
- rtmsg.rtmsg_type = RTMSG_NEWROUTE;
- rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
+ struct fib6_config cfg = {
+ .fc_table = RT6_TABLE_MAIN,
+ .fc_metric = IP6_RT_PRIO_ADDRCONF,
+ .fc_ifindex = dev->ifindex,
+ .fc_dst_len = 96,
+ .fc_flags = RTF_UP | RTF_NONEXTHOP,
+ };
/* prefix length - 96 bits "::d.d.d.d" */
- rtmsg.rtmsg_dst_len = 96;
- rtmsg.rtmsg_flags = RTF_UP|RTF_NONEXTHOP;
- rtmsg.rtmsg_ifindex = dev->ifindex;
-
- ip6_route_add(&rtmsg, NULL, NULL, NULL);
+ ip6_route_add(&cfg);
}
+#endif
static void addrconf_add_lroute(struct net_device *dev)
{
if (rt && ((rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0)) {
if (rt->rt6i_flags&RTF_EXPIRES) {
if (valid_lft == 0) {
- ip6_del_rt(rt, NULL, NULL, NULL);
+ ip6_del_rt(rt);
rt = NULL;
} else {
rt->rt6i_expires = jiffies + rt_expires;
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;
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;
ASSERT_RTNL();
if ((dev = __dev_get_by_index(ifindex)) == NULL)
return -ENODEV;
- if (!(dev->flags&IFF_UP))
- return -ENETDOWN;
-
if ((idev = addrconf_add_dev(dev)) == NULL)
return -ENOBUFS;
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;
}
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;
}
}
}
+#endif
static void init_loopback(struct net_device *dev)
{
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;
} else
sit_route_add(dev);
}
+#endif
static inline int
ipv6_inherit_linklocal(struct inet6_dev *idev, struct net_device *link_dev)
}
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;
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);
spin_lock_bh(&ifp->lock);
if (dev->flags&(IFF_NOARP|IFF_LOOPBACK) ||
+
!(dev->flags&IFF_MULTICAST) ||
- !(ifp->flags&IFA_F_TENTATIVE)) {
+ !(ifp->flags&IFA_F_TENTATIVE) ||
+ ifp->flags & IFA_F_NODAD) {
ifp->flags &= ~IFA_F_TENTATIVE;
spin_unlock_bh(&ifp->lock);
read_unlock_bh(&idev->lock);
struct inet6_ifaddr *ifp = (struct inet6_ifaddr *)v;
/* no ipv6 inside a vserver for now */
- if (vx_check(0, VX_ADMIN|VX_WATCH))
+ if (nx_check(0, VS_ADMIN|VS_WATCH))
seq_printf(seq,
NIP6_SEQFMT " %02x %02x %02x %02x %8s\n",
NIP6(ifp->addr),
}
#endif /* CONFIG_PROC_FS */
+#ifdef CONFIG_IPV6_MIP6
+/* Check if address is a home address configured on any interface. */
+int ipv6_chk_home_addr(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 (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
*/
spin_unlock_bh(&addrconf_verify_lock);
}
+static struct in6_addr *extract_addr(struct nlattr *addr, struct nlattr *local)
+{
+ struct in6_addr *pfx = NULL;
+
+ if (addr)
+ pfx = nla_data(addr);
+
+ if (local) {
+ if (pfx && nla_memcmp(local, pfx, sizeof(*pfx)))
+ pfx = NULL;
+ else
+ pfx = nla_data(local);
+ }
+
+ return pfx;
+}
+
+static struct nla_policy ifa_ipv6_policy[IFA_MAX+1] __read_mostly = {
+ [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 rtattr **rta = arg;
- struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
+ struct ifaddrmsg *ifm;
+ struct nlattr *tb[IFA_MAX+1];
struct in6_addr *pfx;
+ int err;
- pfx = NULL;
- if (rta[IFA_ADDRESS-1]) {
- if (RTA_PAYLOAD(rta[IFA_ADDRESS-1]) < sizeof(*pfx))
- return -EINVAL;
- pfx = RTA_DATA(rta[IFA_ADDRESS-1]);
- }
- if (rta[IFA_LOCAL-1]) {
- if (RTA_PAYLOAD(rta[IFA_LOCAL-1]) < sizeof(*pfx) ||
- (pfx && memcmp(pfx, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*pfx))))
- return -EINVAL;
- pfx = RTA_DATA(rta[IFA_LOCAL-1]);
- }
+ err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
+ if (err < 0)
+ return err;
+
+ ifm = nlmsg_data(nlh);
+ pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL]);
if (pfx == NULL)
return -EINVAL;
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;
-
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;
+ ifa_flags |= IFA_F_PERMANENT;
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_verify(0);
static int
inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
- struct rtattr **rta = arg;
- struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
+ struct ifaddrmsg *ifm;
+ struct nlattr *tb[IFA_MAX+1];
struct in6_addr *pfx;
- __u32 valid_lft = INFINITY_LIFE_TIME, prefered_lft = INFINITY_LIFE_TIME;
+ struct inet6_ifaddr *ifa;
+ struct net_device *dev;
+ u32 valid_lft = INFINITY_LIFE_TIME, preferred_lft = INFINITY_LIFE_TIME;
+ u8 ifa_flags;
+ int err;
- pfx = NULL;
- if (rta[IFA_ADDRESS-1]) {
- if (RTA_PAYLOAD(rta[IFA_ADDRESS-1]) < sizeof(*pfx))
- return -EINVAL;
- pfx = RTA_DATA(rta[IFA_ADDRESS-1]);
- }
- if (rta[IFA_LOCAL-1]) {
- if (RTA_PAYLOAD(rta[IFA_LOCAL-1]) < sizeof(*pfx) ||
- (pfx && memcmp(pfx, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*pfx))))
- return -EINVAL;
- pfx = RTA_DATA(rta[IFA_LOCAL-1]);
- }
+ err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
+ if (err < 0)
+ return err;
+
+ ifm = nlmsg_data(nlh);
+ pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL]);
if (pfx == NULL)
return -EINVAL;
- if (rta[IFA_CACHEINFO-1]) {
+ if (tb[IFA_CACHEINFO]) {
struct ifa_cacheinfo *ci;
- if (RTA_PAYLOAD(rta[IFA_CACHEINFO-1]) < sizeof(*ci))
- return -EINVAL;
- ci = RTA_DATA(rta[IFA_CACHEINFO-1]);
+
+ ci = nla_data(tb[IFA_CACHEINFO]);
valid_lft = ci->ifa_valid;
- prefered_lft = ci->ifa_prefered;
+ preferred_lft = ci->ifa_prefered;
+ } else {
+ preferred_lft = INFINITY_LIFE_TIME;
+ valid_lft = INFINITY_LIFE_TIME;
}
- if (nlh->nlmsg_flags & NLM_F_REPLACE) {
- int ret;
- ret = inet6_addr_modify(ifm->ifa_index, pfx,
- prefered_lft, valid_lft);
- if (ret == 0 || !(nlh->nlmsg_flags & NLM_F_CREATE))
- return ret;
+ dev = __dev_get_by_index(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(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,
- prefered_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 -ENOBUFS;
+
+ 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)
+ return nlmsg_cancel(skb, nlh);
+
+ 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;
-nlmsg_failure:
-rtattr_failure:
- skb_trim(skb, b - skb->data);
- return -1;
+ 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 -ENOBUFS;
+
+ 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)
+ return nlmsg_cancel(skb, nlh);
+
+ 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;
-nlmsg_failure:
-rtattr_failure:
- skb_trim(skb, b - skb->data);
- return -1;
+ 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 -ENOBUFS;
+
+ 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)
+ return nlmsg_cancel(skb, nlh);
+
+ return nlmsg_end(skb, nlh);
}
enum addr_type_t
return inet6_dump_addr(skb, cb, type);
}
-static int inet6_rtm_getaddr(struct sk_buff *in_skb,
- struct nlmsghdr* nlh, void *arg)
+static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr* nlh,
+ void *arg)
{
- struct rtattr **rta = arg;
- struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
+ 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 size = NLMSG_SPACE(sizeof(struct ifaddrmsg) + INET6_IFADDR_RTA_SPACE);
int err;
- if (rta[IFA_ADDRESS-1]) {
- if (RTA_PAYLOAD(rta[IFA_ADDRESS-1]) < sizeof(*addr))
- return -EINVAL;
- addr = RTA_DATA(rta[IFA_ADDRESS-1]);
- }
- if (rta[IFA_LOCAL-1]) {
- if (RTA_PAYLOAD(rta[IFA_LOCAL-1]) < sizeof(*addr) ||
- (addr && memcmp(addr, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*addr))))
- return -EINVAL;
- addr = RTA_DATA(rta[IFA_LOCAL-1]);
+ err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
+ if (err < 0)
+ goto errout;
+
+ addr = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL]);
+ if (addr == NULL) {
+ err = -EINVAL;
+ goto errout;
}
- if (addr == NULL)
- return -EINVAL;
+ ifm = nlmsg_data(nlh);
if (ifm->ifa_index)
dev = __dev_get_by_index(ifm->ifa_index);
- if ((ifa = ipv6_get_ifaddr(addr, dev, 1)) == NULL)
- return -EADDRNOTAVAIL;
+ if ((ifa = ipv6_get_ifaddr(addr, dev, 1)) == NULL) {
+ err = -EADDRNOTAVAIL;
+ goto errout;
+ }
- if ((skb = alloc_skb(size, GFP_KERNEL)) == NULL) {
+ if ((skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_KERNEL)) == NULL) {
err = -ENOBUFS;
- goto out;
+ goto errout_ifa;
}
- NETLINK_CB(skb).dst_pid = NETLINK_CB(in_skb).pid;
err = inet6_fill_ifaddr(skb, ifa, NETLINK_CB(in_skb).pid,
nlh->nlmsg_seq, RTM_NEWADDR, 0);
- if (err < 0) {
- err = -EMSGSIZE;
- goto out_free;
- }
+ /* failure implies BUG in inet6_ifaddr_msgsize() */
+ BUG_ON(err < 0);
- err = netlink_unicast(rtnl, skb, NETLINK_CB(in_skb).pid, MSG_DONTWAIT);
- if (err > 0)
- err = 0;
-out:
+ err = rtnl_unicast(skb, NETLINK_CB(in_skb).pid);
+errout_ifa:
in6_ifa_put(ifa);
+errout:
return err;
-out_free:
- kfree_skb(skb);
- goto out;
}
static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa)
{
struct sk_buff *skb;
- int size = NLMSG_SPACE(sizeof(struct ifaddrmsg) + INET6_IFADDR_RTA_SPACE);
+ int err = -ENOBUFS;
- skb = alloc_skb(size, GFP_ATOMIC);
- if (!skb) {
- netlink_set_err(rtnl, 0, RTNLGRP_IPV6_IFADDR, ENOBUFS);
- return;
- }
- if (inet6_fill_ifaddr(skb, ifa, current->pid, 0, event, 0) < 0) {
- kfree_skb(skb);
- netlink_set_err(rtnl, 0, RTNLGRP_IPV6_IFADDR, EINVAL);
- return;
- }
- NETLINK_CB(skb).dst_group = RTNLGRP_IPV6_IFADDR;
- netlink_broadcast(rtnl, skb, 0, RTNLGRP_IPV6_IFADDR, 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);
+ /* failure implies BUG in inet6_ifaddr_msgsize() */
+ BUG_ON(err < 0);
+
+ err = rtnl_notify(skb, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC);
+errout:
+ if (err < 0)
+ rtnl_set_sk_err(RTNLGRP_IPV6_IFADDR, err);
}
static void inline 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;
}
-/* 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 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 */
+ );
+}
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 *conf;
+ 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 -ENOBUFS;
+
+ 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);
+ NLA_PUT(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci);
+
+ conf = nla_reserve(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(s32));
+ if (conf == NULL)
+ goto nla_put_failure;
+ ipv6_store_devconf(&idev->cnf, nla_data(conf), nla_len(conf));
/* XXX - Statistics/MC not implemented */
- subattr->rta_len = skb->tail - (u8*)subattr;
- nlh->nlmsg_len = skb->tail - b;
- kfree(array);
- return skb->len;
+ nla_nest_end(skb, protoinfo);
+ return nlmsg_end(skb, nlh);
-nlmsg_failure:
-rtattr_failure:
- kfree(array);
- skb_trim(skb, b - skb->data);
- return -1;
+nla_put_failure:
+ return nlmsg_cancel(skb, nlh);
}
static int inet6_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
void inet6_ifinfo_notify(int event, struct inet6_dev *idev)
{
struct sk_buff *skb;
- int size = NLMSG_SPACE(sizeof(struct ifinfomsg) + INET6_IFINFO_RTA_SPACE);
+ int err = -ENOBUFS;
- skb = alloc_skb(size, GFP_ATOMIC);
- if (!skb) {
- netlink_set_err(rtnl, 0, RTNLGRP_IPV6_IFINFO, ENOBUFS);
- return;
- }
- if (inet6_fill_ifinfo(skb, idev, current->pid, 0, event, 0) < 0) {
- kfree_skb(skb);
- netlink_set_err(rtnl, 0, RTNLGRP_IPV6_IFINFO, EINVAL);
- return;
- }
- NETLINK_CB(skb).dst_group = RTNLGRP_IPV6_IFINFO;
- netlink_broadcast(rtnl, skb, 0, RTNLGRP_IPV6_IFINFO, 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);
+ /* failure implies BUG in inet6_if_nlmsg_size() */
+ BUG_ON(err < 0);
+
+ err = rtnl_notify(skb, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC);
+errout:
+ if (err < 0)
+ rtnl_set_sk_err(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 -ENOBUFS;
+
+ 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:
+ return nlmsg_cancel(skb, nlh);
}
static void inet6_prefix_notify(int event, struct inet6_dev *idev,
struct prefix_info *pinfo)
{
struct sk_buff *skb;
- int size = NLMSG_SPACE(sizeof(struct prefixmsg) + INET6_PREFIX_RTA_SPACE);
+ int err = -ENOBUFS;
- skb = alloc_skb(size, GFP_ATOMIC);
- if (!skb) {
- netlink_set_err(rtnl, 0, RTNLGRP_IPV6_PREFIX, ENOBUFS);
- return;
- }
- if (inet6_fill_prefix(skb, idev, pinfo, current->pid, 0, event, 0) < 0) {
- kfree_skb(skb);
- netlink_set_err(rtnl, 0, RTNLGRP_IPV6_PREFIX, EINVAL);
- return;
- }
- NETLINK_CB(skb).dst_group = RTNLGRP_IPV6_PREFIX;
- netlink_broadcast(rtnl, skb, 0, RTNLGRP_IPV6_PREFIX, 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);
+ /* failure implies BUG in inet6_prefix_nlmsg_size() */
+ BUG_ON(err < 0);
+
+ err = rtnl_notify(skb, 0, RTNLGRP_IPV6_PREFIX, NULL, GFP_ATOMIC);
+errout:
+ if (err < 0)
+ rtnl_set_sk_err(RTNLGRP_IPV6_PREFIX, err);
}
static struct rtnetlink_link inet6_rtnetlink_table[RTM_NR_MSGTYPES] = {
[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)
switch (event) {
case RTM_NEWADDR:
- ip6_ins_rt(ifp->rt, NULL, NULL, NULL);
+ ip6_ins_rt(ifp->rt);
if (ifp->idev->cnf.forwarding)
addrconf_join_anycast(ifp);
break;
addrconf_leave_anycast(ifp);
addrconf_leave_solict(ifp->idev, &ifp->addr);
dst_hold(&ifp->rt->u.dst);
- if (ip6_del_rt(ifp->rt, NULL, NULL, NULL))
+ if (ip6_del_rt(ifp->rt))
dst_free(&ifp->rt->u.dst);
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
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 new;
ctl_table addrconf_conf_dir[2];
ctl_table addrconf_proto_dir[2];
ctl_table addrconf_root_dir[2];
-} addrconf_sysctl = {
+} addrconf_sysctl __read_mostly = {
.sysctl_header = NULL,
.addrconf_vars = {
{
.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 = NET_IPV6_PROXY_NDP,
+ .procname = "proxy_ndp",
+ .data = &ipv6_devconf.proxy_ndp,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .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,
+ },
{
.ctl_name = 0, /* sentinel */
}
struct addrconf_sysctl_table *t;
char *dev_name = NULL;
- t = kmalloc(sizeof(*t), GFP_KERNEL);
+ t = kmemdup(&addrconf_sysctl, sizeof(*t), GFP_KERNEL);
if (t == NULL)
return;
- memcpy(t, &addrconf_sysctl, sizeof(*t));
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;