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[IPV6] ADDRCONF: Support get operation of single address

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Based on MIPL2 kernel patch.

Signed-off-by: Noriaki TAKAMIYA <takamiya@po.ntts.co.jp>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
This commit is contained in:
Noriaki TAKAMIYA 2006-07-28 18:12:12 +09:00 committed by David S. Miller
parent 8f27ebb982
commit 6c22382805
1 changed files with 58 additions and 1 deletions
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59
net/ipv6/addrconf.c
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@ -3165,6 +3165,62 @@ static int inet6_dump_ifacaddr(struct sk_buff *skb, struct netlink_callback *cb)
return inet6_dump_addr(skb, cb, type);
}
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 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]);
}
if (addr == NULL)
return -EINVAL;
if (ifm->ifa_index)
dev = __dev_get_by_index(ifm->ifa_index);
if ((ifa = ipv6_get_ifaddr(addr, dev, 1)) == NULL)
return -EADDRNOTAVAIL;
if ((skb = alloc_skb(size, GFP_KERNEL)) == NULL) {
err = -ENOBUFS;
goto out;
}
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;
}
err = netlink_unicast(rtnl, skb, NETLINK_CB(in_skb).pid, MSG_DONTWAIT);
if (err > 0)
err = 0;
out:
in6_ifa_put(ifa);
return err;
out_free:
kfree_skb(skb);
goto out;
}
static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa)
{
struct sk_buff *skb;
@ -3407,7 +3463,8 @@ static struct rtnetlink_link inet6_rtnetlink_table[RTM_NR_MSGTYPES] = {
[RTM_GETLINK - RTM_BASE] = { .dumpit = inet6_dump_ifinfo, },
[RTM_NEWADDR - RTM_BASE] = { .doit = inet6_rtm_newaddr, },
[RTM_DELADDR - RTM_BASE] = { .doit = inet6_rtm_deladdr, },
[RTM_GETADDR - RTM_BASE] = { .dumpit = inet6_dump_ifaddr, },
[RTM_GETADDR - RTM_BASE] = { .doit = inet6_rtm_getaddr,
.dumpit = inet6_dump_ifaddr, },
[RTM_GETMULTICAST - RTM_BASE] = { .dumpit = inet6_dump_ifmcaddr, },
[RTM_GETANYCAST - RTM_BASE] = { .dumpit = inet6_dump_ifacaddr, },
[RTM_NEWROUTE - RTM_BASE] = { .doit = inet6_rtm_newroute, },