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1.. SPDX-License-Identifier: GPL-2.02 3=================4LSM/SeLinux secid5=================6 7flowi structure:8 9The secid member in the flow structure is used in LSMs (e.g. SELinux) to indicate10the label of the flow. This label of the flow is currently used in selecting11matching labeled xfrm(s).12 13If this is an outbound flow, the label is derived from the socket, if any, or14the incoming packet this flow is being generated as a response to (e.g. tcp15resets, timewait ack, etc.). It is also conceivable that the label could be16derived from other sources such as process context, device, etc., in special17cases, as may be appropriate.18 19If this is an inbound flow, the label is derived from the IPSec security20associations, if any, used by the packet.21