diff options
author | Julian Anastasov <ja@ssi.bg> | 2017-02-25 17:57:43 +0200 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2017-02-26 21:35:24 -0500 |
commit | 1ecc9ad02c3d4cf44bc94bffcb3b12e7861b00a7 (patch) | |
tree | 07885bcb036945316b5f8add64dd202ae99c9f48 /net | |
parent | c4d2603dac3a555e4bb324daf5cb5cdb5694eedd (diff) | |
download | linux-1ecc9ad02c3d4cf44bc94bffcb3b12e7861b00a7.tar.bz2 |
xfrm: provide correct dst in xfrm_neigh_lookup
Fix xfrm_neigh_lookup to provide dst->path to the
neigh_lookup dst_ops method.
When skb is provided, the IP address in packet should already
match the dst->path address family. But for the non-skb case,
we should consider the last tunnel address as nexthop address.
Fixes: f894cbf847c9 ("net: Add optional SKB arg to dst_ops->neigh_lookup().")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r-- | net/xfrm/xfrm_policy.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index 5f3e87866438..0806dccdf507 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -2836,14 +2836,8 @@ static unsigned int xfrm_mtu(const struct dst_entry *dst) return mtu ? : dst_mtu(dst->path); } -static struct neighbour *xfrm_neigh_lookup(const struct dst_entry *dst, - struct sk_buff *skb, - const void *daddr) -{ - return dst->path->ops->neigh_lookup(dst, skb, daddr); -} - -static void xfrm_confirm_neigh(const struct dst_entry *dst, const void *daddr) +static const void *xfrm_get_dst_nexthop(const struct dst_entry *dst, + const void *daddr) { const struct dst_entry *path = dst->path; @@ -2857,6 +2851,25 @@ static void xfrm_confirm_neigh(const struct dst_entry *dst, const void *daddr) else if (!(xfrm->type->flags & XFRM_TYPE_LOCAL_COADDR)) daddr = &xfrm->id.daddr; } + return daddr; +} + +static struct neighbour *xfrm_neigh_lookup(const struct dst_entry *dst, + struct sk_buff *skb, + const void *daddr) +{ + const struct dst_entry *path = dst->path; + + if (!skb) + daddr = xfrm_get_dst_nexthop(dst, daddr); + return path->ops->neigh_lookup(path, skb, daddr); +} + +static void xfrm_confirm_neigh(const struct dst_entry *dst, const void *daddr) +{ + const struct dst_entry *path = dst->path; + + daddr = xfrm_get_dst_nexthop(dst, daddr); path->ops->confirm_neigh(path, daddr); } |