net: Document xfrm4_gc_thresh and xfrm6_gc_thresh

This change adds documentation for xfrm4_gc_thresh and xfrm6_gc_thresh
based on the comments in commit eeb1b73378b56 ("xfrm: Increase the garbage
collector threshold").

Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 56db1efd7189ac6b25fdfc4a18b579f28e01a4b7..46e88ed7f41d202326b3f198eb9bd0c02b62c5f9 100644 (file)
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -1181,6 +1181,11 @@ tag - INTEGER
        Allows you to write a number, which can be used as required.
        Default value is 0.
 
+xfrm4_gc_thresh - INTEGER
+       The threshold at which we will start garbage collecting for IPv4
+       destination cache entries.  At twice this value the system will
+       refuse new allocations.
+
 Alexey Kuznetsov.
 kuznet@ms2.inr.ac.ru
 
@@ -1617,6 +1622,11 @@ ratelimit - INTEGER
        otherwise the minimal space between responses in milliseconds.
        Default: 1000
 
+xfrm6_gc_thresh - INTEGER
+       The threshold at which we will start garbage collecting for IPv6
+       destination cache entries.  At twice this value the system will
+       refuse new allocations.
+
 
 IPv6 Update by:
 Pekka Savola <pekkas@netcore.fi>