From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Berger Subject: [PATCH v10 0/5] Multi-instance vTPM proxy driver Date: Fri, 15 Apr 2016 09:50:11 -0400 Message-ID: <1460728216-19563-1-git-send-email-stefanb@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tpmdd-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Cc: linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: tpmdd-devel@lists.sourceforge.net The following series of patches implements a multi-instance vTPM proxy driver that can dynamically create TPM 'server' and client device pairs. Using an ioctl on the provided /dev/vtpmx, a client-side vTPM device and a server side file descriptor is created. The file descriptor must be passed to a TPM emulator. The device driver will initialize the emulated TPM using TPM 1.2 or TPM 2 startup commands and it will read the command durations from the device in case of a TPM 1.2. The choice of emulated TPM device (1.2 or 2) must be provided with a flag in the ioctl. The patches are based on the tip of a recent checkout of Jarkko's tree (master branch). Stefan v9->v10: - add new patch 1 with sysfs related rework; reworked patch 2 as a consequence - patch 3: fixed ioctl from using _IOW to using _IOWR (reinstall headers and rebuild test tools) - patch 3: do not use priv field anymore but uses dev_set_drvdata / dev_get_drvdata instead now v8->v9: - move constant from public header into tpm_vtpm_proxy.c - Replaced VTPM_PROXY_MAGIC in ioctl definition with its value (0xa1) - Check for the STATE_OPEN_FLAG in wait_event_interruptable and after returning from it v7->v8: - minor tweaks on the documentation - Reordered function calls in the VTPM proxy driver's server side release function so that a client holding the 'ops' lock releases it before the driver tries to grab the lock when unregistering the device. v6->v7: - Adjusted name of driver to tpm_vtpm_proxy from tpm_vtpm. Adjust function names, names of structures, and names of constants. - Adjusted IOCTL to use magic 0xa1 rather than the completely used 0xa0. - Extended driver documentation and added documentation of ioctl. - Moved test program to own project (dropped patch 11). v5->v6: - Adapted errno's for unsupported flags and ioctls following Jason's comments v4->v5: - Introduced different error codes for unsupported flags and ioctls - Added documentation patch Jason Gunthorpe (1): tpm: Remove all uses of drvdata from the TPM Core Stefan Berger (4): tpm: Introduce TPM_CHIP_FLAG_VIRTUAL tpm: Proxy driver for supporting multiple emulated TPMs tpm: Initialize TPM and get durations and timeouts tpm: Add documentation for the tpm_vtpm_proxy device driver Documentation/ioctl/ioctl-number.txt | 1 + Documentation/tpm/tpm_vtpm_proxy.txt | 71 ++++ drivers/char/tpm/Kconfig | 10 + drivers/char/tpm/Makefile | 1 + drivers/char/tpm/tpm-chip.c | 76 ++-- drivers/char/tpm/tpm-interface.c | 7 +- drivers/char/tpm/tpm-sysfs.c | 61 ++-- drivers/char/tpm/tpm.h | 11 +- drivers/char/tpm/tpm_vtpm_proxy.c | 650 +++++++++++++++++++++++++++++++++++ include/uapi/linux/Kbuild | 1 + include/uapi/linux/vtpm_proxy.h | 36 ++ 11 files changed, 858 insertions(+), 67 deletions(-) create mode 100644 Documentation/tpm/tpm_vtpm_proxy.txt create mode 100644 drivers/char/tpm/tpm_vtpm_proxy.c create mode 100644 include/uapi/linux/vtpm_proxy.h -- 2.4.3 ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z