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ipv6: Move xfrm_lookup() call down into icmp6_dst_alloc().

And return error pointers.

Signed-off-by: David S. Miller <davem@davemloft.net>
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1 parent 8f03151 commit 87a115783eca7a424eef599d6f10a499f85f59c8 @davem330 davem330 committed Dec 6, 2011
Showing with 12 additions and 29 deletions.
  1. +1 −1 include/net/ip6_route.h
  2. +2 −16 net/ipv6/mcast.c
  3. +1 −8 net/ipv6/ndisc.c
  4. +8 −4 net/ipv6/route.c
View
2 include/net/ip6_route.h
@@ -95,7 +95,7 @@ extern struct rt6_info *rt6_lookup(struct net *net,
extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
struct neighbour *neigh,
- const struct in6_addr *addr);
+ struct flowi6 *fl6);
extern int icmp6_dst_gc(void);
extern void fib6_force_start_gc(struct net *net);
View
18 net/ipv6/mcast.c
@@ -1410,18 +1410,11 @@ static void mld_sendpack(struct sk_buff *skb)
csum_partial(skb_transport_header(skb),
mldlen, 0));
- dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
-
- if (!dst) {
- err = -ENOMEM;
- goto err_out;
- }
-
icmpv6_flow_init(net->ipv6.igmp_sk, &fl6, ICMPV6_MLD2_REPORT,
&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
skb->dev->ifindex);
+ dst = icmp6_dst_alloc(skb->dev, NULL, &fl6);
- dst = xfrm_lookup(net, dst, flowi6_to_flowi(&fl6), NULL, 0);
err = 0;
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
@@ -1785,17 +1778,10 @@ static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
rcu_read_lock();
idev = __in6_dev_get(skb->dev);
- dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
- if (!dst) {
- err = -ENOMEM;
- goto err_out;
- }
-
icmpv6_flow_init(sk, &fl6, type,
&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
skb->dev->ifindex);
-
- dst = xfrm_lookup(net, dst, flowi6_to_flowi(&fl6), NULL, 0);
+ dst = icmp6_dst_alloc(skb->dev, NULL, &fl6);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto err_out;
View
9 net/ipv6/ndisc.c
@@ -516,14 +516,7 @@ void ndisc_send_skb(struct sk_buff *skb,
type = icmp6h->icmp6_type;
icmpv6_flow_init(sk, &fl6, type, saddr, daddr, dev->ifindex);
-
- dst = icmp6_dst_alloc(dev, neigh, daddr);
- if (!dst) {
- kfree_skb(skb);
- return;
- }
-
- dst = xfrm_lookup(net, dst, flowi6_to_flowi(&fl6), NULL, 0);
+ dst = icmp6_dst_alloc(dev, neigh, &fl6);
if (IS_ERR(dst)) {
kfree_skb(skb);
return;
View
12 net/ipv6/route.c
@@ -1068,8 +1068,9 @@ static DEFINE_SPINLOCK(icmp6_dst_lock);
struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
struct neighbour *neigh,
- const struct in6_addr *addr)
+ struct flowi6 *fl6)
{
+ struct dst_entry *dst;
struct rt6_info *rt;
struct inet6_dev *idev = in6_dev_get(dev);
struct net *net = dev_net(dev);
@@ -1080,13 +1081,14 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, dev, 0);
if (unlikely(!rt)) {
in6_dev_put(idev);
+ dst = ERR_PTR(-ENOMEM);
goto out;
}
if (neigh)
neigh_hold(neigh);
else {
- neigh = __neigh_lookup_errno(&nd_tbl, addr, dev);
+ neigh = __neigh_lookup_errno(&nd_tbl, &fl6->daddr, dev);
if (IS_ERR(neigh))
neigh = NULL;
}
@@ -1095,7 +1097,7 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
rt->dst.output = ip6_output;
dst_set_neighbour(&rt->dst, neigh);
atomic_set(&rt->dst.__refcnt, 1);
- rt->rt6i_dst.addr = *addr;
+ rt->rt6i_dst.addr = fl6->daddr;
rt->rt6i_dst.plen = 128;
rt->rt6i_idev = idev;
dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 255);
@@ -1107,8 +1109,10 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
fib6_force_start_gc(net);
+ dst = xfrm_lookup(net, &rt->dst, flowi6_to_flowi(fl6), NULL, 0);
+
out:
- return &rt->dst;
+ return dst;
}
int icmp6_dst_gc(void)

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