diff options
Diffstat (limited to 'net/ipv6/addrconf.c')
-rw-r--r-- | net/ipv6/addrconf.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 76ff9f4fe89..4ea8cf7c0cc 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -379,8 +379,8 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev) dev->type == ARPHRD_NONE || dev->type == ARPHRD_SIT) { printk(KERN_INFO - "Disabled Privacy Extensions on device %p(%s)\n", - dev, dev->name); + "%s: Disabled Privacy Extensions\n", + dev->name); ndev->cnf.use_tempaddr = -1; } else { in6_dev_hold(ndev); @@ -1596,9 +1596,17 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len) not good. */ if (valid_lft >= 0x7FFFFFFF/HZ) - rt_expires = 0; + rt_expires = 0x7FFFFFFF - (0x7FFFFFFF % HZ); else - rt_expires = jiffies + valid_lft * HZ; + rt_expires = valid_lft * HZ; + + /* + * We convert this (in jiffies) to clock_t later. + * Avoid arithmetic overflow there as well. + * Overflow can happen only if HZ < USER_HZ. + */ + if (HZ < USER_HZ && rt_expires > 0x7FFFFFFF / USER_HZ) + rt_expires = 0x7FFFFFFF / USER_HZ; if (pinfo->onlink) { struct rt6_info *rt; @@ -1610,12 +1618,12 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len) ip6_del_rt(rt, NULL, NULL, NULL); rt = NULL; } else { - rt->rt6i_expires = rt_expires; + rt->rt6i_expires = jiffies + rt_expires; } } } else if (valid_lft) { addrconf_prefix_route(&pinfo->prefix, pinfo->prefix_len, - dev, rt_expires, RTF_ADDRCONF|RTF_EXPIRES|RTF_PREFIX_RT); + dev, jiffies_to_clock_t(rt_expires), RTF_ADDRCONF|RTF_EXPIRES|RTF_PREFIX_RT); } if (rt) dst_release(&rt->u.dst); |