[PATCH v11 00/16] Remove nested TPM operations

* [PATCH v11 00/16] Remove nested TPM operations
@ 2019-02-05 22:47 Jarkko Sakkinen
  2019-02-05 22:47 ` [PATCH v11 01/16] tpm: use tpm_buf in tpm_transmit_cmd() as the IO parameter Jarkko Sakkinen
                   ` (16 more replies)
  0 siblings, 17 replies; 42+ messages in thread
From: Jarkko Sakkinen @ 2019-02-05 22:47 UTC (permalink / raw)
  To: linux-integrity
  Cc: linux-kernel, linux-security-module, Peter Huewe,
	Jason Gunthorpe, Tomas Winkler, Tadeusz Struk, Stefan Berger,
	Nayna Jain, Jarkko Sakkinen

Make the changes necessary to detach TPM space code and TPM activation
code out of the tpm_transmit() flow because of both of these can cause
nested tpm_transmit() calls. The nesteds calls make the whole flow hard
to maintain, and thus, it is better to just fix things now before this
turns into a bigger mess.

v11:
* Drop the patch that tries to flush TPM space on system. Not a proper
  fallback + out of scope for this patch set.

v10:
* Use void pointers to avoid unnecessary casts in functions paramaters
  where it makes sense.

v9:
* Fixed again tpm_try_get_ops().
* Added missing reviewed-by's.

v8:
* Re-add the check for ret < 0 after calling tpm_try_transmit() that
  was dropped by mistake while moving code.
* Fix error fallback for tpm_try_get_ops() when tpm_chip_start()
  fails.

v7:
*  Reorganize series so that more trivial and self-contained changes are
   in the head.

v6:
* When tpm_validate_commmand() was moved to tpm2-space.c, the struct for
  the TPM header was incorrectly declared as struct tpm_input_header.
* Fix return value in tpm_validate_command().

v5:
* Add the missing rev's from Stefan Berger.

v4:
* Return 0 from pcrs_show() when tpm1_pcr_read() fails.
* Fix error handling flow in tpm_try_transmit().
* Replace struct tpm_input_header and struct tpm_output_header with
  struct tpm_header.

v3:
* Encapsulate power gating code to tpm_chip_start() and tpm_chip_stop().
* Move TPM power gating code and locking to tpm_try_get_ops() and
  tpm_put_ops().
* Call power gating code directly in tpm_chip_register() and
  tpm2_del_space().

v2:
* Print tpm2_commit_space() error inside tpm2_commit_space()
* Error code was not printed when recv() callback failed. It is
  fixed in this version.
* Added a patch that removes @space from tpm_transmit().
* Fixed a regression in earlier series. Forgot to amend the change
  from the staging area that renames NESTED to UNLOCKED in tpm2-space.c.

Jarkko Sakkinen (16):
  tpm: use tpm_buf in tpm_transmit_cmd() as the IO parameter
  tpm: fix invalid return value in pubek_show()
  tpm: return 0 from pcrs_show() when tpm1_pcr_read() fails
  tpm: print tpm2_commit_space() error inside tpm2_commit_space()
  tpm: declare struct tpm_header
  tpm: access command header through struct in tpm_try_transmit()
  tpm: encapsulate tpm_dev_transmit()
  tpm: clean up tpm_try_transmit() error handling flow
  tpm: move tpm_validate_commmand() to tpm2-space.c
  tpm: move TPM space code out of tpm_transmit()
  tpm: remove @space from tpm_transmit()
  tpm: use tpm_try_get_ops() in tpm-sysfs.c.
  tpm: remove TPM_TRANSMIT_UNLOCKED flag
  tpm: introduce tpm_chip_start() and tpm_chip_stop()
  tpm: take TPM chip power gating out of tpm_transmit()
  tpm: remove @flags from tpm_transmit()

 drivers/char/tpm/tpm-chip.c       | 109 ++++++++++++
 drivers/char/tpm/tpm-dev-common.c |  44 ++++-
 drivers/char/tpm/tpm-interface.c  | 264 ++++++------------------------
 drivers/char/tpm/tpm-sysfs.c      | 138 ++++++++++------
 drivers/char/tpm/tpm.h            |  64 +++-----
 drivers/char/tpm/tpm1-cmd.c       |  28 +---
 drivers/char/tpm/tpm2-cmd.c       |  72 +++-----
 drivers/char/tpm/tpm2-space.c     |  91 +++++++---
 drivers/char/tpm/tpm_i2c_atmel.c  |   5 +-
 drivers/char/tpm/tpm_vtpm_proxy.c |  12 +-
 drivers/char/tpm/xen-tpmfront.c   |   2 +-
 11 files changed, 408 insertions(+), 421 deletions(-)

-- 
2.19.1

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