diff options
| author | Patrick McHardy <kaber@trash.net> | 2006-01-07 08:04:54 +0100 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-01-07 21:57:33 +0100 |
| commit | 3e3850e989c5d2eb1aab6f0fd9257759f0f4cbc6 (patch) | |
| tree | fa05d1de4767bc30e77442ffbacfe8bd8dd2213d /net/xfrm | |
| parent | [IPV4]: reset IPCB flags when neccessary (diff) | |
| download | linux-3e3850e989c5d2eb1aab6f0fd9257759f0f4cbc6.tar.xz linux-3e3850e989c5d2eb1aab6f0fd9257759f0f4cbc6.zip | |
[NETFILTER]: Fix xfrm lookup in ip_route_me_harder/ip6_route_me_harder
ip_route_me_harder doesn't use the port numbers of the xfrm lookup and
uses ip_route_input for non-local addresses which doesn't do a xfrm
lookup, ip6_route_me_harder doesn't do a xfrm lookup at all.
Use xfrm_decode_session and do the lookup manually, make sure both
only do the lookup if the packet hasn't been transformed already.
Makeing sure the lookup only happens once needs a new field in the
IP6CB, which exceeds the size of skb->cb. The size of skb->cb is
increased to 48b. Apparently the IPv6 mobile extensions need some
more room anyway.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm')
| -rw-r--r-- | net/xfrm/xfrm_policy.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index 64a447375fdb..f2edc9225b6a 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -951,8 +951,8 @@ xfrm_policy_ok(struct xfrm_tmpl *tmpl, struct sec_path *sp, int start, return start; } -static int -_decode_session(struct sk_buff *skb, struct flowi *fl, unsigned short family) +int +xfrm_decode_session(struct sk_buff *skb, struct flowi *fl, unsigned short family) { struct xfrm_policy_afinfo *afinfo = xfrm_policy_get_afinfo(family); @@ -963,6 +963,7 @@ _decode_session(struct sk_buff *skb, struct flowi *fl, unsigned short family) xfrm_policy_put_afinfo(afinfo); return 0; } +EXPORT_SYMBOL(xfrm_decode_session); static inline int secpath_has_tunnel(struct sec_path *sp, int k) { @@ -982,7 +983,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, u8 fl_dir = policy_to_flow_dir(dir); u32 sk_sid; - if (_decode_session(skb, &fl, family) < 0) + if (xfrm_decode_session(skb, &fl, family) < 0) return 0; sk_sid = security_sk_sid(sk, &fl, fl_dir); @@ -1055,7 +1056,7 @@ int __xfrm_route_forward(struct sk_buff *skb, unsigned short family) { struct flowi fl; - if (_decode_session(skb, &fl, family) < 0) + if (xfrm_decode_session(skb, &fl, family) < 0) return 0; return xfrm_lookup(&skb->dst, &fl, NULL, 0) == 0; |