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[IPV6] ADDRCONF: NLM_F_REPLACE support for RTM_NEWADDR

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Based on MIPL2 kernel patch.

Signed-off-by: Noriaki YAKAMIYA <takamiya@po.ntts.co.jp>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
This commit is contained in:
Noriaki TAKAMIYA 2006-07-28 18:12:13 +09:00 committed by David S. Miller
parent 6c22382805
commit 081bba5b3a
1 changed files with 57 additions and 0 deletions
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57
net/ipv6/addrconf.c
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@ -2894,6 +2894,55 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
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)
{
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;
else if (valid_lft >= 0x7FFFFFFF/HZ)
valid_lft = 0x7FFFFFFF/HZ;
if (prefered_lft == 0)
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->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);
return 0;
}
static int
inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
@ -2926,6 +2975,14 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
prefered_lft = ci->ifa_prefered;
}
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;
}
return inet6_addr_add(ifm->ifa_index, pfx, ifm->ifa_prefixlen,
prefered_lft, valid_lft);