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tpm: vtpm_proxy: Implement request_locality function.

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Implement the request_locality function. To set the locality on the
backend we define vendor-specific TPM 1.2 and TPM 2 ordinals and send
a command to the backend to set the locality for the next commands.

To avoid recursing into requesting the locality, we set the
TPM_TRANSMIT_RAW flag when calling tpm_transmit_cmd. To avoid recursing
into TPM 2 space related commands, we set the space parameter to NULL.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
This commit is contained in:
Stefan Berger
2017-05-24 17:39:40 -04:00
committed by Jarkko Sakkinen
parent 85ab3bf305
commit be4c9acfe2
3 changed files with 41 additions and 0 deletions
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4
include/uapi/linux/vtpm_proxy.h
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@@ -46,4 +46,8 @@ struct vtpm_proxy_new_dev {
#define VTPM_PROXY_IOC_NEW_DEV _IOWR(0xa1, 0x00, struct vtpm_proxy_new_dev)
/* vendor specific commands to set locality */
#define TPM2_CC_SET_LOCALITY 0x20001000
#define TPM_ORD_SET_LOCALITY 0x20001000
#endif /* _UAPI_LINUX_VTPM_PROXY_H */