[v8,05/17] tpm: declare struct tpm_header

Message ID	20181116123845.15705-6-jarkko.sakkinen@linux.intel.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-integrity-owner@kernel.org> From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> To: linux-integrity@vger.kernel.org Cc: linux-security-module@vger.kernel.org, James Bottomley <James.Bottomley@HansenPartnership.com>, Tomas Winkler <tomas.winkler@intel.com>, Tadeusz Struk <tadeusz.struk@intel.com>, Stefan Berger <stefanb@linux.vnet.ibm.com>, Nayna Jain <nayna@linux.ibm.com>, Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>, Peter Huewe <peterhuewe@gmx.de>, Jason Gunthorpe <jgg@ziepe.ca>, Arnd Bergmann <arnd@arndb.de>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Nicolas Ferre <nicolas.ferre@microchip.com>, Alexandre Belloni <alexandre.belloni@bootlin.com>, Ludovic Desroches <ludovic.desroches@microchip.com>, linux-kernel@vger.kernel.org (open list), linux-arm-kernel@lists.infradead.org (moderated list:ARM/Microchip (AT91) SoC support) Subject: [PATCH v8 05/17] tpm: declare struct tpm_header Date: Fri, 16 Nov 2018 14:38:29 +0200 Message-Id: <20181116123845.15705-6-jarkko.sakkinen@linux.intel.com> In-Reply-To: <20181116123845.15705-1-jarkko.sakkinen@linux.intel.com> References: <20181116123845.15705-1-jarkko.sakkinen@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk
Series	Removed nested TPM operations \| expand [v8,00/17] Removed nested TPM operations [v8,01/17] tpm: use tpm_buf in tpm_transmit_cmd() as the IO parameter [v8,02/17] tpm: fix invalid return value in pubek_show() [v8,03/17] tpm: return 0 from pcrs_show() when tpm1_pcr_read() fails [v8,04/17] tpm: print tpm2_commit_space() error inside tpm2_commit_space() [v8,05/17] tpm: declare struct tpm_header [v8,06/17] tpm: access command header through struct in tpm_try_transmit() [v8,07/17] tpm: encapsulate tpm_dev_transmit() [v8,08/17] tpm: call tpm2_flush_space() on error in tpm_try_transmit() [v8,09/17] tpm: clean up tpm_try_transmit() error handling flow [v8,10/17] tpm: move tpm_validate_commmand() to tpm2-space.c [v8,11/17] tpm: move TPM space code out of tpm_transmit() [v8,12/17] tpm: remove @space from tpm_transmit() [v8,13/17] tpm: use tpm_try_get_ops() in tpm-sysfs.c. [v8,14/17] tpm: remove TPM_TRANSMIT_UNLOCKED flag [v8,15/17] tpm: introduce tpm_chip_start() and tpm_chip_stop() [v8,16/17] tpm: take TPM chip power gating out of tpm_transmit() [v8,17/17] tpm: remove @flags from tpm_transmit()

diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index 7ac6ada8428c..cb0d44c158ae 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -67,7 +67,7 @@ static int tpm_validate_command(struct tpm_chip *chip, const u8 *cmd, size_t len) { - const struct tpm_input_header *header = (const void *)cmd; + const struct tpm_header *header = (const void *)cmd; int i; u32 cc; u32 attrs; @@ -166,7 +166,7 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz, unsigned int flags) { - struct tpm_output_header *header = (void *)buf; + struct tpm_header *header = (void *)buf; int rc; ssize_t len = 0; u32 count, ordinal; @@ -316,7 +316,7 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip, ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space, u8 *buf, size_t bufsiz, unsigned int flags) { - struct tpm_output_header *header = (struct tpm_output_header *)buf; + struct tpm_header *header = (struct tpm_header *)buf; /* space for header and handles */ u8 save[TPM_HEADER_SIZE + 3*sizeof(u32)]; unsigned int delay_msec = TPM2_DURATION_SHORT; @@ -381,8 +381,7 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_space *space, struct tpm_buf *buf, size_t min_rsp_body_length, unsigned int flags, const char *desc) { - const struct tpm_output_header *header = - (struct tpm_output_header *)buf->data; + const struct tpm_header *header = (struct tpm_header *)buf->data; int err; ssize_t len; diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 49bca4d1e786..86fa8ac0ae20 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -273,16 +273,13 @@ struct tpm_chip { #define to_tpm_chip(d) container_of(d, struct tpm_chip, dev) -struct tpm_input_header { - __be16 tag; - __be32 length; - __be32 ordinal; -} __packed; - -struct tpm_output_header { - __be16 tag; - __be32 length; - __be32 return_code; +struct tpm_header { + __be16 tag; + __be32 length; + union { + __be32 ordinal; + __be32 return_code; + }; } __packed; #define TPM_TAG_RQU_COMMAND 193 @@ -401,8 +398,8 @@ struct tpm_buf { static inline void tpm_buf_reset(struct tpm_buf *buf, u16 tag, u32 ordinal) { - struct tpm_input_header *head; - head = (struct tpm_input_header *)buf->data; + struct tpm_header *head = (struct tpm_header *)buf->data; + head->tag = cpu_to_be16(tag); head->length = cpu_to_be32(sizeof(*head)); head->ordinal = cpu_to_be32(ordinal); @@ -428,14 +425,14 @@ static inline void tpm_buf_destroy(struct tpm_buf *buf) static inline u32 tpm_buf_length(struct tpm_buf *buf) { - struct tpm_input_header *head = (struct tpm_input_header *) buf->data; + struct tpm_header *head = (struct tpm_header *) buf->data; return be32_to_cpu(head->length); } static inline u16 tpm_buf_tag(struct tpm_buf *buf) { - struct tpm_input_header *head = (struct tpm_input_header *) buf->data; + struct tpm_header *head = (struct tpm_header *) buf->data; return be16_to_cpu(head->tag); } @@ -444,7 +441,7 @@ static inline void tpm_buf_append(struct tpm_buf *buf, const unsigned char *new_data, unsigned int new_len) { - struct tpm_input_header *head = (struct tpm_input_header *) buf->data; + struct tpm_header *head = (struct tpm_header *) buf->data; u32 len = tpm_buf_length(buf); /* Return silently if overflow has already happened. */ diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c index 2bcf470c8e5d..ab03f8600f89 100644 --- a/drivers/char/tpm/tpm2-cmd.c +++ b/drivers/char/tpm/tpm2-cmd.c @@ -784,7 +784,7 @@ static int tpm2_do_selftest(struct tpm_chip *chip) */ int tpm2_probe(struct tpm_chip *chip) { - struct tpm_output_header *out; + struct tpm_header *out; struct tpm_buf buf; int rc; @@ -797,7 +797,7 @@ int tpm2_probe(struct tpm_chip *chip) rc = tpm_transmit_cmd(chip, NULL, &buf, 0, 0, NULL); /* We ignore TPM return codes on purpose. */ if (rc >= 0) { - out = (struct tpm_output_header *)buf.data; + out = (struct tpm_header *)buf.data; if (be16_to_cpu(out->tag) == TPM2_ST_NO_SESSIONS) chip->flags |= TPM_CHIP_FLAG_TPM2; } diff --git a/drivers/char/tpm/tpm2-space.c b/drivers/char/tpm/tpm2-space.c index 5ecc73988f7c..862ee1ce1755 100644 --- a/drivers/char/tpm/tpm2-space.c +++ b/drivers/char/tpm/tpm2-space.c @@ -334,7 +334,7 @@ static int tpm2_map_response_header(struct tpm_chip *chip, u32 cc, u8 *rsp, size_t len) { struct tpm_space *space = &chip->work_space; - struct tpm_output_header *header = (void *)rsp; + struct tpm_header *header = (void *)rsp; u32 phandle; u32 phandle_type; u32 vhandle; @@ -394,7 +394,7 @@ static int tpm2_map_response_body(struct tpm_chip *chip, u32 cc, u8 *rsp, size_t len) { struct tpm_space *space = &chip->work_space; - struct tpm_output_header *header = (void *)rsp; + struct tpm_header *header = (void *)rsp; struct tpm2_cap_handles *data; u32 phandle; u32 phandle_type; @@ -492,7 +492,7 @@ static int tpm2_save_space(struct tpm_chip *chip) int tpm2_commit_space(struct tpm_chip *chip, struct tpm_space *space, u32 cc, u8 *buf, size_t *bufsiz) { - struct tpm_output_header *header = (void *)buf; + struct tpm_header *header = (void *)buf; int rc; if (!space) diff --git a/drivers/char/tpm/tpm_i2c_atmel.c b/drivers/char/tpm/tpm_i2c_atmel.c index 95ce2e9ccdc6..4720b2442ffe 100644 --- a/drivers/char/tpm/tpm_i2c_atmel.c +++ b/drivers/char/tpm/tpm_i2c_atmel.c @@ -46,7 +46,7 @@ struct priv_data { /* This is the amount we read on the first try. 25 was chosen to fit a * fair number of read responses in the buffer so a 2nd retry can be * avoided in small message cases. */ - u8 buffer[sizeof(struct tpm_output_header) + 25]; + u8 buffer[sizeof(struct tpm_header) + 25]; }; static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t len) @@ -72,8 +72,7 @@ static int i2c_atmel_recv(struct tpm_chip *chip, u8 *buf, size_t count) { struct priv_data *priv = dev_get_drvdata(&chip->dev); struct i2c_client *client = to_i2c_client(chip->dev.parent); - struct tpm_output_header *hdr = - (struct tpm_output_header *)priv->buffer; + struct tpm_header *hdr = (struct tpm_header *)priv->buffer; u32 expected_len; int rc; diff --git a/drivers/char/tpm/tpm_vtpm_proxy.c b/drivers/char/tpm/tpm_vtpm_proxy.c index 5f95fbfb7f6b..28eb5ab15b99 100644 --- a/drivers/char/tpm/tpm_vtpm_proxy.c +++ b/drivers/char/tpm/tpm_vtpm_proxy.c @@ -303,9 +303,9 @@ static int vtpm_proxy_tpm_op_recv(struct tpm_chip *chip, u8 *buf, size_t count) static int vtpm_proxy_is_driver_command(struct tpm_chip *chip, u8 *buf, size_t count) { - struct tpm_input_header *hdr = (struct tpm_input_header *)buf; + struct tpm_header *hdr = (struct tpm_header *)buf; - if (count < sizeof(struct tpm_input_header)) + if (count < sizeof(struct tpm_header)) return 0; if (chip->flags & TPM_CHIP_FLAG_TPM2) { @@ -402,7 +402,7 @@ static int vtpm_proxy_request_locality(struct tpm_chip *chip, int locality) { struct tpm_buf buf; int rc; - const struct tpm_output_header *header; + const struct tpm_header *header; struct proxy_dev *proxy_dev = dev_get_drvdata(&chip->dev); if (chip->flags & TPM_CHIP_FLAG_TPM2) @@ -427,7 +427,7 @@ static int vtpm_proxy_request_locality(struct tpm_chip *chip, int locality) goto out; } - header = (const struct tpm_output_header *)buf.data; + header = (const struct tpm_header *)buf.data; rc = be32_to_cpu(header->return_code); if (rc) locality = -1; diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c index b150f87f38f5..1259e935fd58 100644 --- a/drivers/char/tpm/xen-tpmfront.c +++ b/drivers/char/tpm/xen-tpmfront.c @@ -163,7 +163,7 @@ static int vtpm_send(struct tpm_chip *chip, u8 *buf, size_t count) wmb(); notify_remote_via_evtchn(priv->evtchn); - ordinal = be32_to_cpu(((struct tpm_input_header*)buf)->ordinal); + ordinal = be32_to_cpu(((struct tpm_header *)buf)->ordinal); duration = tpm_calc_ordinal_duration(chip, ordinal); if (wait_for_tpm_stat(chip, VTPM_STATUS_IDLE, duration,

[v8,05/17] tpm: declare struct tpm_header

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