1 files changed, 35 insertions, 0 deletions

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 90ed78110fd4..307cd4ec8edd 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -375,6 +375,41 @@ tcp_slow_start_after_idle - BOOLEAN
         be timed out after an idle period.
         Default: 1
 
+CIPSOv4 Variables:
+
+cipso_cache_enable - BOOLEAN
+        If set, enable additions to and lookups from the CIPSO label mapping
+        cache.  If unset, additions are ignored and lookups always result in a
+        miss.  However, regardless of the setting the cache is still
+        invalidated when required when means you can safely toggle this on and
+        off and the cache will always be "safe".
+        Default: 1
+
+cipso_cache_bucket_size - INTEGER
+        The CIPSO label cache consists of a fixed size hash table with each
+        hash bucket containing a number of cache entries.  This variable limits
+        the number of entries in each hash bucket; the larger the value the
+        more CIPSO label mappings that can be cached.  When the number of
+        entries in a given hash bucket reaches this limit adding new entries
+        causes the oldest entry in the bucket to be removed to make room.
+        Default: 10
+
+cipso_rbm_optfmt - BOOLEAN
+        Enable the "Optimized Tag 1 Format" as defined in section 3.4.2.6 of
+        the CIPSO draft specification (see Documentation/netlabel for details).
+        This means that when set the CIPSO tag will be padded with empty
+        categories in order to make the packet data 32-bit aligned.
+        Default: 0
+
+cipso_rbm_structvalid - BOOLEAN
+        If set, do a very strict check of the CIPSO option when
+        ip_options_compile() is called.  If unset, relax the checks done during
+        ip_options_compile().  Either way is "safe" as errors are caught else
+        where in the CIPSO processing code but setting this to 0 (False) should
+        result in less work (i.e. it should be faster) but could cause problems
+        with other implementations that require strict checking.
+        Default: 0
+
 IP Variables:
 
 ip_local_port_range - 2 INTEGERS