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-rw-r--r--net/ipv6/addrconf.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 3ef3fe20283f..8ea1e36bf8eb 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2895,6 +2895,55 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
2895} 2895}
2896 2896
2897static int 2897static int
2898inet6_addr_modify(int ifindex, struct in6_addr *pfx,
2899 __u32 prefered_lft, __u32 valid_lft)
2900{
2901 struct inet6_ifaddr *ifp = NULL;
2902 struct net_device *dev;
2903 int ifa_flags = 0;
2904
2905 if ((dev = __dev_get_by_index(ifindex)) == NULL)
2906 return -ENODEV;
2907
2908 if (!(dev->flags&IFF_UP))
2909 return -ENETDOWN;
2910
2911 if (!valid_lft || (prefered_lft > valid_lft))
2912 return -EINVAL;
2913
2914 ifp = ipv6_get_ifaddr(pfx, dev, 1);
2915 if (ifp == NULL)
2916 return -ENOENT;
2917
2918 if (valid_lft == INFINITY_LIFE_TIME)
2919 ifa_flags = IFA_F_PERMANENT;
2920 else if (valid_lft >= 0x7FFFFFFF/HZ)
2921 valid_lft = 0x7FFFFFFF/HZ;
2922
2923 if (prefered_lft == 0)
2924 ifa_flags = IFA_F_DEPRECATED;
2925 else if ((prefered_lft >= 0x7FFFFFFF/HZ) &&
2926 (prefered_lft != INFINITY_LIFE_TIME))
2927 prefered_lft = 0x7FFFFFFF/HZ;
2928
2929 spin_lock_bh(&ifp->lock);
2930 ifp->flags = (ifp->flags & ~(IFA_F_DEPRECATED|IFA_F_PERMANENT)) | ifa_flags;
2931
2932 ifp->tstamp = jiffies;
2933 ifp->valid_lft = valid_lft;
2934 ifp->prefered_lft = prefered_lft;
2935
2936 spin_unlock_bh(&ifp->lock);
2937 if (!(ifp->flags&IFA_F_TENTATIVE))
2938 ipv6_ifa_notify(0, ifp);
2939 in6_ifa_put(ifp);
2940
2941 addrconf_verify(0);
2942
2943 return 0;
2944}
2945
2946static int
2898inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) 2947inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
2899{ 2948{
2900 struct rtattr **rta = arg; 2949 struct rtattr **rta = arg;
@@ -2926,6 +2975,14 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
2926 prefered_lft = ci->ifa_prefered; 2975 prefered_lft = ci->ifa_prefered;
2927 } 2976 }
2928 2977
2978 if (nlh->nlmsg_flags & NLM_F_REPLACE) {
2979 int ret;
2980 ret = inet6_addr_modify(ifm->ifa_index, pfx,
2981 prefered_lft, valid_lft);
2982 if (ret == 0 || !(nlh->nlmsg_flags & NLM_F_CREATE))
2983 return ret;
2984 }
2985
2929 return inet6_addr_add(ifm->ifa_index, pfx, ifm->ifa_prefixlen, 2986 return inet6_addr_add(ifm->ifa_index, pfx, ifm->ifa_prefixlen,
2930 prefered_lft, valid_lft); 2987 prefered_lft, valid_lft);
2931 2988