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Diffstat (limited to 'net')
-rw-r--r--net/ipv6/addrconf.c23
1 files changed, 9 insertions, 14 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 52ba96a64a1..61627036eb2 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2894,22 +2894,17 @@ static struct nla_policy ifa_ipv6_policy[IFA_MAX+1] __read_mostly = {
static int
inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
- struct rtattr **rta = arg;
- struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
+ struct ifaddrmsg *ifm;
+ struct nlattr *tb[IFA_MAX+1];
struct in6_addr *pfx;
+ int err;
- pfx = NULL;
- if (rta[IFA_ADDRESS-1]) {
- if (RTA_PAYLOAD(rta[IFA_ADDRESS-1]) < sizeof(*pfx))
- return -EINVAL;
- pfx = RTA_DATA(rta[IFA_ADDRESS-1]);
- }
- if (rta[IFA_LOCAL-1]) {
- if (RTA_PAYLOAD(rta[IFA_LOCAL-1]) < sizeof(*pfx) ||
- (pfx && memcmp(pfx, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*pfx))))
- return -EINVAL;
- pfx = RTA_DATA(rta[IFA_LOCAL-1]);
- }
+ err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
+ if (err < 0)
+ return err;
+
+ ifm = nlmsg_data(nlh);
+ pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL]);
if (pfx == NULL)
return -EINVAL;