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xfrm: Handle blackhole route creation via afinfo.

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That way we don't have to potentially do this in every xfrm_lookup()
caller.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2011-03-01 14:59:04 -08:00
parent 69ead7afdf
commit 2774c131b1
10 changed files with 50 additions and 67 deletions
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32
net/ipv6/ip6_output.c
View File

@@ -1025,18 +1025,12 @@ struct dst_entry *ip6_dst_lookup_flow(struct sock *sk, struct flowi *fl,
return ERR_PTR(err);
if (final_dst)
ipv6_addr_copy(&fl->fl6_dst, final_dst);
if (can_sleep) {
if (can_sleep)
fl->flags |= FLOWI_FLAG_CAN_SLEEP;
err = __xfrm_lookup(sock_net(sk), &dst, fl, sk, 0);
if (err == -EREMOTE)
return ip6_dst_blackhole(sock_net(sk), dst);
if (err)
return ERR_PTR(err);
} else {
err = xfrm_lookup(sock_net(sk), &dst, fl, sk, 0);
if (err)
return ERR_PTR(err);
}
err = xfrm_lookup(sock_net(sk), &dst, fl, sk, 0);
if (err)
return ERR_PTR(err);
return dst;
}
EXPORT_SYMBOL_GPL(ip6_dst_lookup_flow);
@@ -1070,18 +1064,12 @@ struct dst_entry *ip6_sk_dst_lookup_flow(struct sock *sk, struct flowi *fl,
return ERR_PTR(err);
if (final_dst)
ipv6_addr_copy(&fl->fl6_dst, final_dst);
if (can_sleep) {
if (can_sleep)
fl->flags |= FLOWI_FLAG_CAN_SLEEP;
err = __xfrm_lookup(sock_net(sk), &dst, fl, sk, 0);
if (err == -EREMOTE)
return ip6_dst_blackhole(sock_net(sk), dst);
if (err)
return ERR_PTR(err);
} else {
err = xfrm_lookup(sock_net(sk), &dst, fl, sk, 0);
if (err)
return ERR_PTR(err);
}
err = xfrm_lookup(sock_net(sk), &dst, fl, sk, 0);
if (err)
return ERR_PTR(err);
return dst;
}
EXPORT_SYMBOL_GPL(ip6_sk_dst_lookup_flow);

3
net/ipv6/route.c
View File

@@ -870,7 +870,7 @@ struct dst_entry * ip6_route_output(struct net *net, struct sock *sk,
EXPORT_SYMBOL(ip6_route_output);
struct dst_entry *ip6_dst_blackhole(struct net *net, struct dst_entry *dst_orig)
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;
@@ -907,7 +907,6 @@ struct dst_entry *ip6_dst_blackhole(struct net *net, struct dst_entry *dst_orig)
dst_release(dst_orig);
return new ? new : ERR_PTR(-ENOMEM);
}
EXPORT_SYMBOL_GPL(ip6_dst_blackhole);
/*
* Destination cache support functions

1
net/ipv6/xfrm6_policy.c
View File

@@ -274,6 +274,7 @@ static struct xfrm_policy_afinfo xfrm6_policy_afinfo = {
.get_tos = xfrm6_get_tos,
.init_path = xfrm6_init_path,
.fill_dst = xfrm6_fill_dst,
.blackhole_route = ip6_blackhole_route,
};
static int __init xfrm6_policy_init(void)