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authorYOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org>2013-01-05 16:34:51 +0000
committerDavid S. Miller <davem@davemloft.net>2013-01-06 21:08:38 -0800
commit71bcdba06db91ceaaffe019b6c958b5faf06012a (patch)
tree1db3be752e5d6a40619f1366bbcbae8008487d19 /net/ipv6/route.c
parent9ca1b22d6d228177e6f929f6818a1cd3d5e30c4a (diff)
ndisc: Use struct rd_msg for redirect message.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/route.c')
-rw-r--r--net/ipv6/route.c24
1 files changed, 10 insertions, 14 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index e229a3bc345d..621b68ecf16f 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1705,37 +1705,33 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu
struct net *net = dev_net(skb->dev);
struct netevent_redirect netevent;
struct rt6_info *rt, *nrt = NULL;
- const struct in6_addr *target;
struct ndisc_options ndopts;
- const struct in6_addr *dest;
struct neighbour *old_neigh;
struct inet6_dev *in6_dev;
struct neighbour *neigh;
- struct icmp6hdr *icmph;
+ struct rd_msg *msg;
int optlen, on_link;
u8 *lladdr;
optlen = skb->tail - skb->transport_header;
- optlen -= sizeof(struct icmp6hdr) + 2 * sizeof(struct in6_addr);
+ optlen -= sizeof(*msg);
if (optlen < 0) {
net_dbg_ratelimited("rt6_do_redirect: packet too short\n");
return;
}
- icmph = icmp6_hdr(skb);
- target = (const struct in6_addr *) (icmph + 1);
- dest = target + 1;
+ msg = (struct rd_msg *)icmp6_hdr(skb);
- if (ipv6_addr_is_multicast(dest)) {
+ if (ipv6_addr_is_multicast(&msg->dest)) {
net_dbg_ratelimited("rt6_do_redirect: destination address is multicast\n");
return;
}
on_link = 0;
- if (ipv6_addr_equal(dest, target)) {
+ if (ipv6_addr_equal(&msg->dest, &msg->target)) {
on_link = 1;
- } else if (ipv6_addr_type(target) !=
+ } else if (ipv6_addr_type(&msg->target) !=
(IPV6_ADDR_UNICAST|IPV6_ADDR_LINKLOCAL)) {
net_dbg_ratelimited("rt6_do_redirect: target address is not link-local unicast\n");
return;
@@ -1752,7 +1748,7 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu
* first-hop router for the specified ICMP Destination Address.
*/
- if (!ndisc_parse_options((u8*)(dest + 1), optlen, &ndopts)) {
+ if (!ndisc_parse_options(msg->opt, optlen, &ndopts)) {
net_dbg_ratelimited("rt6_redirect: invalid ND options\n");
return;
}
@@ -1779,7 +1775,7 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu
*/
dst_confirm(&rt->dst);
- neigh = __neigh_lookup(&nd_tbl, target, skb->dev, 1);
+ neigh = __neigh_lookup(&nd_tbl, &msg->target, skb->dev, 1);
if (!neigh)
return;
@@ -1799,7 +1795,7 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu
NEIGH_UPDATE_F_ISROUTER))
);
- nrt = ip6_rt_copy(rt, dest);
+ nrt = ip6_rt_copy(rt, &msg->dest);
if (!nrt)
goto out;
@@ -1817,7 +1813,7 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu
netevent.old_neigh = old_neigh;
netevent.new = &nrt->dst;
netevent.new_neigh = neigh;
- netevent.daddr = dest;
+ netevent.daddr = &msg->dest;
call_netevent_notifiers(NETEVENT_REDIRECT, &netevent);
if (rt->rt6i_flags & RTF_CACHE) {