s390/cio: Export information about Endpoint-Security Capability

Add a new sysfs attribute 'esc' per chpid. This new attribute exports
the Endpoint-Security-Capability byte of channel-path description block,
which could be 0-None, 1-Authentication, 2 and 3-Encryption.

For example:
$ cat /sys/devices/css0/chp0.34/esc
0

[[email protected]: cleaned-up & modified description]

Signed-off-by: Sebastian Ott <[email protected]>
Signed-off-by: Vineeth Vijayan <[email protected]>
Signed-off-by: Stefan Haberland <[email protected]>
Reviewed-by: Jan Höppner <[email protected]>
Reviewed-by: Peter Oberparleiter <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Acked-by: Vasily Gorbik <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>

0 files changed, 0 insertions, 0 deletions