[IPV6] ADDRCONF: Support get operation of single address
Based on MIPL2 kernel patch. Signed-off-by: Noriaki TAKAMIYA <takamiya@po.ntts.co.jp> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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8f27ebb982
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6c22382805
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@ -3165,6 +3165,62 @@ static int inet6_dump_ifacaddr(struct sk_buff *skb, struct netlink_callback *cb)
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return inet6_dump_addr(skb, cb, type);
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}
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static int inet6_rtm_getaddr(struct sk_buff *in_skb,
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struct nlmsghdr* nlh, void *arg)
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{
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struct rtattr **rta = arg;
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struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
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struct in6_addr *addr = NULL;
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struct net_device *dev = NULL;
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struct inet6_ifaddr *ifa;
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struct sk_buff *skb;
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int size = NLMSG_SPACE(sizeof(struct ifaddrmsg) + INET6_IFADDR_RTA_SPACE);
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int err;
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if (rta[IFA_ADDRESS-1]) {
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if (RTA_PAYLOAD(rta[IFA_ADDRESS-1]) < sizeof(*addr))
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return -EINVAL;
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addr = RTA_DATA(rta[IFA_ADDRESS-1]);
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}
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if (rta[IFA_LOCAL-1]) {
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if (RTA_PAYLOAD(rta[IFA_LOCAL-1]) < sizeof(*addr) ||
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(addr && memcmp(addr, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*addr))))
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return -EINVAL;
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addr = RTA_DATA(rta[IFA_LOCAL-1]);
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}
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if (addr == NULL)
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return -EINVAL;
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if (ifm->ifa_index)
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dev = __dev_get_by_index(ifm->ifa_index);
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if ((ifa = ipv6_get_ifaddr(addr, dev, 1)) == NULL)
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return -EADDRNOTAVAIL;
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if ((skb = alloc_skb(size, GFP_KERNEL)) == NULL) {
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err = -ENOBUFS;
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goto out;
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}
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NETLINK_CB(skb).dst_pid = NETLINK_CB(in_skb).pid;
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err = inet6_fill_ifaddr(skb, ifa, NETLINK_CB(in_skb).pid,
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nlh->nlmsg_seq, RTM_NEWADDR, 0);
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if (err < 0) {
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err = -EMSGSIZE;
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goto out_free;
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}
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err = netlink_unicast(rtnl, skb, NETLINK_CB(in_skb).pid, MSG_DONTWAIT);
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if (err > 0)
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err = 0;
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out:
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in6_ifa_put(ifa);
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return err;
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out_free:
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kfree_skb(skb);
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goto out;
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}
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static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa)
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{
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struct sk_buff *skb;
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@ -3407,7 +3463,8 @@ static struct rtnetlink_link inet6_rtnetlink_table[RTM_NR_MSGTYPES] = {
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[RTM_GETLINK - RTM_BASE] = { .dumpit = inet6_dump_ifinfo, },
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[RTM_NEWADDR - RTM_BASE] = { .doit = inet6_rtm_newaddr, },
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[RTM_DELADDR - RTM_BASE] = { .doit = inet6_rtm_deladdr, },
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[RTM_GETADDR - RTM_BASE] = { .dumpit = inet6_dump_ifaddr, },
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[RTM_GETADDR - RTM_BASE] = { .doit = inet6_rtm_getaddr,
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.dumpit = inet6_dump_ifaddr, },
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[RTM_GETMULTICAST - RTM_BASE] = { .dumpit = inet6_dump_ifmcaddr, },
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[RTM_GETANYCAST - RTM_BASE] = { .dumpit = inet6_dump_ifacaddr, },
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[RTM_NEWROUTE - RTM_BASE] = { .doit = inet6_rtm_newroute, },
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