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net: Make dst_alloc() take more explicit initializations.

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Now the dst->dev, dev->obsolete, and dst->flags values can
be specified as well.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2011-04-28 14:13:38 -07:00
parent 778865a550
commit 5c1e6aa300
6 changed files with 44 additions and 61 deletions
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29
net/ipv6/route.c
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@@ -227,9 +227,10 @@ static struct rt6_info ip6_blk_hole_entry_template = {
#endif
/* allocate dst with ip6_dst_ops */
static inline struct rt6_info *ip6_dst_alloc(struct dst_ops *ops)
static inline struct rt6_info *ip6_dst_alloc(struct dst_ops *ops,
struct net_device *dev)
{
return (struct rt6_info *)dst_alloc(ops, 0);
return (struct rt6_info *)dst_alloc(ops, dev, 0, 0, 0);
}
static void ip6_dst_destroy(struct dst_entry *dst)
@@ -881,10 +882,10 @@ EXPORT_SYMBOL(ip6_route_output);
struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_orig)
{
struct rt6_info *rt = dst_alloc(&ip6_dst_blackhole_ops, 1);
struct rt6_info *ort = (struct rt6_info *) dst_orig;
struct rt6_info *rt, *ort = (struct rt6_info *) dst_orig;
struct dst_entry *new = NULL;
rt = dst_alloc(&ip6_dst_blackhole_ops, ort->dst.dev, 1, 0, 0);
if (rt) {
new = &rt->dst;
@@ -893,9 +894,6 @@ struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_ori
new->output = dst_discard;
dst_copy_metrics(new, &ort->dst);
new->dev = ort->dst.dev;
if (new->dev)
dev_hold(new->dev);
rt->rt6i_idev = ort->rt6i_idev;
if (rt->rt6i_idev)
in6_dev_hold(rt->rt6i_idev);
@@ -1038,13 +1036,12 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
if (unlikely(idev == NULL))
return NULL;
rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, dev);
if (unlikely(rt == NULL)) {
in6_dev_put(idev);
goto out;
}
dev_hold(dev);
if (neigh)
neigh_hold(neigh);
else {
@@ -1053,7 +1050,6 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
neigh = NULL;
}
rt->rt6i_dev = dev;
rt->rt6i_idev = idev;
rt->rt6i_nexthop = neigh;
atomic_set(&rt->dst.__refcnt, 1);
@@ -1212,7 +1208,7 @@ int ip6_route_add(struct fib6_config *cfg)
goto out;
}
rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, NULL);
if (rt == NULL) {
err = -ENOMEM;
@@ -1731,7 +1727,8 @@ void rt6_pmtu_discovery(const struct in6_addr *daddr, const struct in6_addr *sad
static struct rt6_info * ip6_rt_copy(struct rt6_info *ort)
{
struct net *net = dev_net(ort->rt6i_dev);
struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops,
ort->dst.dev);
if (rt) {
rt->dst.input = ort->dst.input;
@@ -1739,9 +1736,6 @@ static struct rt6_info * ip6_rt_copy(struct rt6_info *ort)
dst_copy_metrics(&rt->dst, &ort->dst);
rt->dst.error = ort->dst.error;
rt->dst.dev = ort->dst.dev;
if (rt->dst.dev)
dev_hold(rt->dst.dev);
rt->rt6i_idev = ort->rt6i_idev;
if (rt->rt6i_idev)
in6_dev_hold(rt->rt6i_idev);
@@ -2011,7 +2005,8 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
int anycast)
{
struct net *net = dev_net(idev->dev);
struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops,
net->loopback_dev);
struct neighbour *neigh;
if (rt == NULL) {
@@ -2021,13 +2016,11 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
return ERR_PTR(-ENOMEM);
}
dev_hold(net->loopback_dev);
in6_dev_hold(idev);
rt->dst.flags = DST_HOST;
rt->dst.input = ip6_input;
rt->dst.output = ip6_output;
rt->rt6i_dev = net->loopback_dev;
rt->rt6i_idev = idev;
rt->dst.obsolete = -1;