diff mbox series

[V2,5/9] tools/arch/x86/intel_sdsi: Fix maximum meter bundle length

Message ID 20240228000016.1685518-6-david.e.box@linux.intel.com
State New
Headers
Series Intel On Demand changes |

Commit Message

David E. Box Feb. 28, 2024, midnight UTC 
  The maximum number of bundles in the meter certificate was set to 8 which
is much less than the maximum. Instead, since the bundles appear at the end
of the file, set it based on the remaining file size from the bundle start
position.

Fixes: aad129780bae ("platform/x86/intel/sdsi: Add support for reading the current meter state")
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
---

V2 - Split of V1 patch 7

 tools/arch/x86/intel_sdsi/intel_sdsi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Comments

Kuppuswamy Sathyanarayanan Feb. 28, 2024, 2:54 a.m. UTC | #1 
On 2/27/24 4:00 PM, David E. Box wrote:
> The maximum number of bundles in the meter certificate was set to 8 which
> is much less than the maximum. Instead, since the bundles appear at the end
> of the file, set it based on the remaining file size from the bundle start
> position.
>
> Fixes: aad129780bae ("platform/x86/intel/sdsi: Add support for reading the current meter state")
> Signed-off-by: David E. Box <david.e.box@linux.intel.com>
> ---
>
> V2 - Split of V1 patch 7
>
>  tools/arch/x86/intel_sdsi/intel_sdsi.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/tools/arch/x86/intel_sdsi/intel_sdsi.c b/tools/arch/x86/intel_sdsi/intel_sdsi.c
> index 2cd92761f171..a02850a710ee 100644
> --- a/tools/arch/x86/intel_sdsi/intel_sdsi.c
> +++ b/tools/arch/x86/intel_sdsi/intel_sdsi.c
> @@ -43,7 +43,6 @@
>  #define METER_CERT_MAX_SIZE	4096
>  #define STATE_MAX_NUM_LICENSES	16
>  #define STATE_MAX_NUM_IN_BUNDLE	(uint32_t)8
> -#define METER_MAX_NUM_BUNDLES	8
>  
>  #define __round_mask(x, y) ((__typeof__(x))((y) - 1))
>  #define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1)
> @@ -167,6 +166,9 @@ struct bundle_encoding_counter {
>  	uint32_t encoding;
>  	uint32_t counter;
>  };
> +#define METER_MAX_NUM_BUNDLES							\
> +		((METER_CERT_MAX_SIZE - sizeof(struct meter_certificate)) /	\
> +		 sizeof(struct bundle_encoding_counter))
>  
>  struct sdsi_dev {
>  	struct sdsi_regs regs;
> @@ -387,7 +389,7 @@ static int sdsi_meter_cert_show(struct sdsi_dev *s)
>  	}
>  
>  	if (mc->bundle_length > METER_MAX_NUM_BUNDLES * 8)  {
> -		fprintf(stderr, "More than %d bundles: %d\n",
> +		fprintf(stderr, "More than %ld bundles: actual %d\n",
>  			METER_MAX_NUM_BUNDLES, mc->bundle_length / 8);

I think you can avoid hardcoding here as well. sizeof(struct bundle_encoding_counter)

>  		return -1;
>  	}
diff mbox series

Patch

diff --git a/tools/arch/x86/intel_sdsi/intel_sdsi.c b/tools/arch/x86/intel_sdsi/intel_sdsi.c
index 2cd92761f171..a02850a710ee 100644
--- a/tools/arch/x86/intel_sdsi/intel_sdsi.c
+++ b/tools/arch/x86/intel_sdsi/intel_sdsi.c
@@ -43,7 +43,6 @@ 
 #define METER_CERT_MAX_SIZE	4096
 #define STATE_MAX_NUM_LICENSES	16
 #define STATE_MAX_NUM_IN_BUNDLE	(uint32_t)8
-#define METER_MAX_NUM_BUNDLES	8
 
 #define __round_mask(x, y) ((__typeof__(x))((y) - 1))
 #define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1)
@@ -167,6 +166,9 @@  struct bundle_encoding_counter {
 	uint32_t encoding;
 	uint32_t counter;
 };
+#define METER_MAX_NUM_BUNDLES							\
+		((METER_CERT_MAX_SIZE - sizeof(struct meter_certificate)) /	\
+		 sizeof(struct bundle_encoding_counter))
 
 struct sdsi_dev {
 	struct sdsi_regs regs;
@@ -387,7 +389,7 @@  static int sdsi_meter_cert_show(struct sdsi_dev *s)
 	}
 
 	if (mc->bundle_length > METER_MAX_NUM_BUNDLES * 8)  {
-		fprintf(stderr, "More than %d bundles: %d\n",
+		fprintf(stderr, "More than %ld bundles: actual %d\n",
 			METER_MAX_NUM_BUNDLES, mc->bundle_length / 8);
 		return -1;
 	}