ndev->tstamp = jiffies;
addrconf_sysctl_register(ndev);
/* protected by rtnl_lock */
- rcu_assign_pointer(dev->ip6_ptr, ndev);
+ RCU_INIT_POINTER(dev->ip6_ptr, ndev);
/* Join all-node multicast group */
ipv6_dev_mc_inc(dev, &in6addr_linklocal_allnodes);
* layer address of our nexhop router
*/
- if (rt->rt6i_nexthop == NULL)
+ if (dst_get_neighbour(&rt->dst) == NULL)
ifa->flags &= ~IFA_F_OPTIMISTIC;
ifa->idev = idev;
{
struct inet6_dev *idev = ifp->idev;
struct in6_addr addr, *tmpaddr;
- unsigned long tmp_prefered_lft, tmp_valid_lft, tmp_cstamp, tmp_tstamp, age;
+ unsigned long tmp_prefered_lft, tmp_valid_lft, tmp_tstamp, age;
unsigned long regen_advance;
int tmp_plen;
int ret = 0;
int max_addresses;
u32 addr_flags;
+ unsigned long now = jiffies;
write_lock(&idev->lock);
if (ift) {
goto out;
}
memcpy(&addr.s6_addr[8], idev->rndid, 8);
- age = (jiffies - ifp->tstamp) / HZ;
+ age = (now - ifp->tstamp) / HZ;
tmp_valid_lft = min_t(__u32,
ifp->valid_lft,
idev->cnf.temp_valid_lft + age);
idev->cnf.max_desync_factor);
tmp_plen = ifp->prefix_len;
max_addresses = idev->cnf.max_addresses;
- tmp_cstamp = ifp->cstamp;
tmp_tstamp = ifp->tstamp;
spin_unlock_bh(&ifp->lock);
ift->ifpub = ifp;
ift->valid_lft = tmp_valid_lft;
ift->prefered_lft = tmp_prefered_lft;
- ift->cstamp = tmp_cstamp;
+ ift->cstamp = now;
ift->tstamp = tmp_tstamp;
spin_unlock_bh(&ift->lock);
static void addrconf_join_anycast(struct inet6_ifaddr *ifp)
{
struct in6_addr addr;
+ if (ifp->prefix_len == 127) /* RFC 6164 */
+ return;
ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len);
if (ipv6_addr_any(&addr))
return;
static void addrconf_leave_anycast(struct inet6_ifaddr *ifp)
{
struct in6_addr addr;
+ if (ifp->prefix_len == 127) /* RFC 6164 */
+ return;
ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len);
if (ipv6_addr_any(&addr))
return;
return -1;
}
+static int addrconf_ifid_gre(u8 *eui, struct net_device *dev)
+{
+ return __ipv6_isatap_ifid(eui, *(__be32 *)dev->dev_addr);
+}
+
static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
{
switch (dev->type) {
return addrconf_ifid_infiniband(eui, dev);
case ARPHRD_SIT:
return addrconf_ifid_sit(eui, dev);
+ case ARPHRD_IPGRE:
+ return addrconf_ifid_gre(eui, dev);
}
return -1;
}
#ifdef CONFIG_IPV6_PRIVACY
read_lock_bh(&in6_dev->lock);
/* update all temporary addresses in the list */
- list_for_each_entry(ift, &in6_dev->tempaddr_list, tmp_list) {
- /*
- * When adjusting the lifetimes of an existing
- * temporary address, only lower the lifetimes.
- * Implementations must not increase the
- * lifetimes of an existing temporary address
- * when processing a Prefix Information Option.
- */
+ list_for_each_entry(ift, &in6_dev->tempaddr_list,
+ tmp_list) {
+ int age, max_valid, max_prefered;
+
if (ifp != ift->ifpub)
continue;
+ /*
+ * RFC 4941 section 3.3:
+ * If a received option will extend the lifetime
+ * of a public address, the lifetimes of
+ * temporary addresses should be extended,
+ * subject to the overall constraint that no
+ * temporary addresses should ever remain
+ * "valid" or "preferred" for a time longer than
+ * (TEMP_VALID_LIFETIME) or
+ * (TEMP_PREFERRED_LIFETIME - DESYNC_FACTOR),
+ * respectively.
+ */
+ age = (now - ift->cstamp) / HZ;
+ max_valid = in6_dev->cnf.temp_valid_lft - age;
+ if (max_valid < 0)
+ max_valid = 0;
+
+ max_prefered = in6_dev->cnf.temp_prefered_lft -
+ in6_dev->cnf.max_desync_factor -
+ age;
+ if (max_prefered < 0)
+ max_prefered = 0;
+
+ if (valid_lft > max_valid)
+ valid_lft = max_valid;
+
+ if (prefered_lft > max_prefered)
+ prefered_lft = max_prefered;
+
spin_lock(&ift->lock);
flags = ift->flags;
- if (ift->valid_lft > valid_lft &&
- ift->valid_lft - valid_lft > (jiffies - ift->tstamp) / HZ)
- ift->valid_lft = valid_lft + (jiffies - ift->tstamp) / HZ;
- if (ift->prefered_lft > prefered_lft &&
- ift->prefered_lft - prefered_lft > (jiffies - ift->tstamp) / HZ)
- ift->prefered_lft = prefered_lft + (jiffies - ift->tstamp) / HZ;
+ ift->valid_lft = valid_lft;
+ ift->prefered_lft = prefered_lft;
+ ift->tstamp = now;
+ if (prefered_lft > 0)
+ ift->flags &= ~IFA_F_DEPRECATED;
+
spin_unlock(&ift->lock);
if (!(flags&IFA_F_TENTATIVE))
ipv6_ifa_notify(0, ift);
if ((create || list_empty(&in6_dev->tempaddr_list)) && in6_dev->cnf.use_tempaddr > 0) {
/*
- * When a new public address is created as described in [ADDRCONF],
- * also create a new temporary address. Also create a temporary
- * address if it's enabled but no temporary address currently exists.
+ * When a new public address is created as
+ * described in [ADDRCONF], also create a new
+ * temporary address. Also create a temporary
+ * address if it's enabled but no temporary
+ * address currently exists.
*/
read_unlock_bh(&in6_dev->lock);
ipv6_create_tempaddr(ifp, NULL);
}
#endif
+#if defined(CONFIG_NET_IPGRE) || defined(CONFIG_NET_IPGRE_MODULE)
+static void addrconf_gre_config(struct net_device *dev)
+{
+ struct inet6_dev *idev;
+ struct in6_addr addr;
+
+ pr_info("ipv6: addrconf_gre_config(%s)\n", dev->name);
+
+ ASSERT_RTNL();
+
+ if ((idev = ipv6_find_idev(dev)) == NULL) {
+ printk(KERN_DEBUG "init gre: add_dev failed\n");
+ return;
+ }
+
+ 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);
+}
+#endif
+
static inline int
ipv6_inherit_linklocal(struct inet6_dev *idev, struct net_device *link_dev)
{
case ARPHRD_SIT:
addrconf_sit_config(dev);
break;
+#endif
+#if defined(CONFIG_NET_IPGRE) || defined(CONFIG_NET_IPGRE_MODULE)
+ case ARPHRD_IPGRE:
+ addrconf_gre_config(dev);
+ break;
#endif
case ARPHRD_TUNNEL6:
addrconf_ip6_tnl_config(dev);
idev->dead = 1;
/* protected by rtnl_lock */
- rcu_assign_pointer(dev->ip6_ptr, NULL);
+ RCU_INIT_POINTER(dev->ip6_ptr, NULL);
/* Step 1.5: remove snmp6 entry */
snmp6_unregister_dev(idev);
if (err < 0)
goto errout_af;
- err = __rtnl_register(PF_INET6, RTM_GETLINK, NULL, inet6_dump_ifinfo);
+ err = __rtnl_register(PF_INET6, RTM_GETLINK, NULL, inet6_dump_ifinfo,
+ NULL);
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);
+ __rtnl_register(PF_INET6, RTM_NEWADDR, inet6_rtm_newaddr, NULL, NULL);
+ __rtnl_register(PF_INET6, RTM_DELADDR, inet6_rtm_deladdr, NULL, NULL);
+ __rtnl_register(PF_INET6, RTM_GETADDR, inet6_rtm_getaddr,
+ inet6_dump_ifaddr, NULL);
+ __rtnl_register(PF_INET6, RTM_GETMULTICAST, NULL,
+ inet6_dump_ifmcaddr, NULL);
+ __rtnl_register(PF_INET6, RTM_GETANYCAST, NULL,
+ inet6_dump_ifacaddr, NULL);
ipv6_addr_label_rtnl_register();
projects / mirror_ubuntu-bionic-kernel.git / blobdiff