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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 v6 07/17] tpm: declare struct tpm_header
Date: Tue, 13 Nov 2018 14:25:56 +0200	[thread overview]
Message-ID: <20181113122609.21643-8-jarkko.sakkinen@linux.intel.com> (raw)
In-Reply-To: <20181113122609.21643-1-jarkko.sakkinen@linux.intel.com>

Decleare struct tpm_header that replaces struct tpm_input_header and
struct tpm_output_header.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
---
 drivers/char/tpm/tpm-interface.c  |  9 ++++-----
 drivers/char/tpm/tpm.h            | 27 ++++++++++++---------------
 drivers/char/tpm/tpm2-cmd.c       |  4 ++--
 drivers/char/tpm/tpm2-space.c     |  6 +++---
 drivers/char/tpm/tpm_i2c_atmel.c  |  5 ++---
 drivers/char/tpm/tpm_vtpm_proxy.c |  8 ++++----
 drivers/char/tpm/xen-tpmfront.c   |  2 +-
 7 files changed, 28 insertions(+), 33 deletions(-)

diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 28d48799b044..6abbcedc87a3 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;
@@ -276,7 +276,7 @@ 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;
@@ -375,8 +375,7 @@ 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 229ac42b644e..92638ec6ec97 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 3d5f9577e5de..393d9aadadce 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,
-- 
2.19.1


  parent reply	other threads:[~2018-11-13 12:27 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-13 12:25 [PATCH v6 00/17] Removed nested TPM operations Jarkko Sakkinen
2018-11-13 12:25 ` [PATCH v6 01/17] tpm: use tpm_buf in tpm_transmit_cmd() as the IO parameter Jarkko Sakkinen
2018-11-13 12:25 ` [PATCH v6 02/17] tpm: fix invalid return value in pubek_show() Jarkko Sakkinen
2018-11-13 12:25 ` [PATCH v6 03/17] tpm: return 0 from pcrs_show() when tpm1_pcr_read() fails Jarkko Sakkinen
2018-11-13 12:25 ` [PATCH v6 04/17] tpm: call tpm2_flush_space() on error in tpm_try_transmit() Jarkko Sakkinen
2018-11-13 12:25 ` [PATCH v6 05/17] tpm: print tpm2_commit_space() error inside tpm2_commit_space() Jarkko Sakkinen
2018-11-13 12:25 ` [PATCH v6 06/17] tpm: clean up tpm_try_transmit() error handling flow Jarkko Sakkinen
2018-11-13 12:25 ` Jarkko Sakkinen [this message]
2018-11-13 12:25 ` [PATCH v6 08/17] tpm: access command header through struct in tpm_try_transmit() Jarkko Sakkinen
2018-11-13 12:25 ` [PATCH v6 09/17] tpm: move tpm_validate_commmand() to tpm2-space.c Jarkko Sakkinen
2018-11-13 12:25 ` [PATCH v6 10/17] tpm: encapsulate tpm_dev_transmit() Jarkko Sakkinen
2018-11-13 12:26 ` [PATCH v6 11/17] tpm: move TPM space code out of tpm_transmit() Jarkko Sakkinen
2018-11-13 12:26 ` [PATCH v6 12/17] tpm: remove @space from tpm_transmit() Jarkko Sakkinen
2018-11-13 12:26 ` [PATCH v6 13/17] tpm: use tpm_try_get_ops() in tpm-sysfs.c Jarkko Sakkinen
2018-11-13 12:26 ` [PATCH v6 14/17] tpm: remove TPM_TRANSMIT_UNLOCKED flag Jarkko Sakkinen
2018-11-13 12:26 ` [PATCH v6 15/17] tpm: introduce tpm_chip_start() and tpm_chip_stop() Jarkko Sakkinen
2018-11-13 12:26 ` [PATCH v6 16/17] tpm: take TPM chip power gating out of tpm_transmit() Jarkko Sakkinen
2018-11-13 12:26 ` [PATCH v6 17/17] tpm: remove @flags from tpm_transmit() Jarkko Sakkinen
2018-11-13 12:30 ` [PATCH v6 00/17] Removed nested TPM operations Winkler, Tomas
2018-11-13 16:55   ` Jarkko Sakkinen

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