From b6340fcd761acf9249b3acbc95c4dc555d9beb07 Mon Sep 17 00:00:00 2001 From: Venkat Yekkirala Date: Mon, 24 Jul 2006 23:28:37 -0700 Subject: [MLSXFRM]: Add security sid to flowi This adds security to flow key for labeling of flows as also to allow for making flow cache lookups based on the security label seemless. Signed-off-by: Venkat Yekkirala Signed-off-by: David S. Miller --- Documentation/networking/secid.txt | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 Documentation/networking/secid.txt (limited to 'Documentation/networking') diff --git a/Documentation/networking/secid.txt b/Documentation/networking/secid.txt new file mode 100644 index 000000000000..95ea06784333 --- /dev/null +++ b/Documentation/networking/secid.txt @@ -0,0 +1,14 @@ +flowi structure: + +The secid member in the flow structure is used in LSMs (e.g. SELinux) to indicate +the label of the flow. This label of the flow is currently used in selecting +matching labeled xfrm(s). + +If this is an outbound flow, the label is derived from the socket, if any, or +the incoming packet this flow is being generated as a response to (e.g. tcp +resets, timewait ack, etc.). It is also conceivable that the label could be +derived from other sources such as process context, device, etc., in special +cases, as may be appropriate. + +If this is an inbound flow, the label is derived from the IPSec security +associations, if any, used by the packet. -- cgit v1.2.3