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| author | Paul Moore <pmoore@redhat.com> | 2012-06-01 07:54:56 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-01 20:18:29 +0200 |
| commit | 20e2a86485967c385d7c7befc1646e4d1d39362e (patch) | |
| tree | e08d5d8dd133a8548e9f5dd0f85e69241ec1e176 /drivers/net/ethernet | |
| parent | net: sock: validate data_len before allocating skb in sock_alloc_send_pskb() (diff) | |
| download | linux-20e2a86485967c385d7c7befc1646e4d1d39362e.tar.xz linux-20e2a86485967c385d7c7befc1646e4d1d39362e.zip | |
cipso: handle CIPSO options correctly when NetLabel is disabled
When NetLabel is not enabled, e.g. CONFIG_NETLABEL=n, and the system
receives a CIPSO tagged packet it is dropped (cipso_v4_validate()
returns non-zero). In most cases this is the correct and desired
behavior, however, in the case where we are simply forwarding the
traffic, e.g. acting as a network bridge, this becomes a problem.
This patch fixes the forwarding problem by providing the basic CIPSO
validation code directly in ip_options_compile() without the need for
the NetLabel or CIPSO code. The new validation code can not perform
any of the CIPSO option label/value verification that
cipso_v4_validate() does, but it can verify the basic CIPSO option
format.
The behavior when NetLabel is enabled is unchanged.
Signed-off-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
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