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| author | Michal Kubeček <mkubecek@suse.cz> | 2015-11-03 08:51:07 +0100 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2015-11-27 12:48:22 +0000 |
| commit | 29fbb7880914dcdefe243d1bb26990c64134404b (patch) | |
| tree | 5bee0fc8664b3d50465d22814d67eb7aa1ab5133 /net/ipv6 | |
| parent | 6b8120dbc56a7ecc9e4b664d860011877bdce985 (diff) | |
| download | lwn-29fbb7880914dcdefe243d1bb26990c64134404b.tar.gz lwn-29fbb7880914dcdefe243d1bb26990c64134404b.zip | |
ipv6: fix tunnel error handling
commit ebac62fe3d24c0ce22dd83afa7b07d1a2aaef44d upstream.
Both tunnel6_protocol and tunnel46_protocol share the same error
handler, tunnel6_err(), which traverses through tunnel6_handlers list.
For ipip6 tunnels, we need to traverse tunnel46_handlers as we do e.g.
in tunnel46_rcv(). Current code can generate an ICMPv6 error message
with an IPv4 packet embedded in it.
Fixes: 73d605d1abbd ("[IPSEC]: changing API of xfrm6_tunnel_register")
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/tunnel6.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/net/ipv6/tunnel6.c b/net/ipv6/tunnel6.c index 4f3cec12aa85..aa109da50001 100644 --- a/net/ipv6/tunnel6.c +++ b/net/ipv6/tunnel6.c @@ -145,6 +145,16 @@ static void tunnel6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, break; } +static void tunnel46_err(struct sk_buff *skb, struct inet6_skb_parm *opt, + u8 type, u8 code, int offset, __be32 info) +{ + struct xfrm6_tunnel *handler; + + for_each_tunnel_rcu(tunnel46_handlers, handler) + if (!handler->err_handler(skb, opt, type, code, offset, info)) + break; +} + static const struct inet6_protocol tunnel6_protocol = { .handler = tunnel6_rcv, .err_handler = tunnel6_err, @@ -153,7 +163,7 @@ static const struct inet6_protocol tunnel6_protocol = { static const struct inet6_protocol tunnel46_protocol = { .handler = tunnel46_rcv, - .err_handler = tunnel6_err, + .err_handler = tunnel46_err, .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL, }; |