| Mauro Carvalho Chehab | de1fd4a | 2020-04-30 18:04:23 +0200 | [diff] [blame] | 1 | .. SPDX-License-Identifier: GPL-2.0 |
| 2 | |
| 3 | ================= |
| 4 | LSM/SeLinux secid |
| 5 | ================= |
| 6 | |
| Venkat Yekkirala | b6340fc | 2006-07-24 23:28:37 -0700 | [diff] [blame] | 7 | flowi structure: |
| 8 | |
| 9 | The secid member in the flow structure is used in LSMs (e.g. SELinux) to indicate |
| 10 | the label of the flow. This label of the flow is currently used in selecting |
| 11 | matching labeled xfrm(s). |
| 12 | |
| 13 | If this is an outbound flow, the label is derived from the socket, if any, or |
| 14 | the incoming packet this flow is being generated as a response to (e.g. tcp |
| 15 | resets, timewait ack, etc.). It is also conceivable that the label could be |
| 16 | derived from other sources such as process context, device, etc., in special |
| 17 | cases, as may be appropriate. |
| 18 | |
| 19 | If this is an inbound flow, the label is derived from the IPSec security |
| 20 | associations, if any, used by the packet. |