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b6340fcd76
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 <vyekkirala@TrustedCS.com> Signed-off-by: David S. Miller <davem@davemloft.net>
15 lines
657 B
Plaintext
15 lines
657 B
Plaintext
flowi structure:
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The secid member in the flow structure is used in LSMs (e.g. SELinux) to indicate
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the label of the flow. This label of the flow is currently used in selecting
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matching labeled xfrm(s).
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If this is an outbound flow, the label is derived from the socket, if any, or
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the incoming packet this flow is being generated as a response to (e.g. tcp
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resets, timewait ack, etc.). It is also conceivable that the label could be
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derived from other sources such as process context, device, etc., in special
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cases, as may be appropriate.
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If this is an inbound flow, the label is derived from the IPSec security
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associations, if any, used by the packet.
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