diff mbox series

[v2] cryptodev: fix check related to device id

Message ID 20191015165034.24276-1-julien.meunier@nokia.com (mailing list archive)
State Changes Requested, archived
Delegated to: akhil goyal
Headers
Series [v2] cryptodev: fix check related to device id |

Checks

Context Check Description
ci/checkpatch warning coding style issues
ci/Intel-compilation fail apply issues

Commit Message

Julien Meunier Oct. 15, 2019, 4:50 p.m. UTC 
  Each cryptodev are indexed with dev_id in the global rte_crypto_devices
variable. nb_devs is incremented / decremented each time a cryptodev is
created / deleted. The goal of nb_devs was to prevent the user to get an
invalid dev_id.

Let's imagine DPDK has configured N cryptodevs. If the cryptodev=1 is
removed at runtime, the latest cryptodev N cannot be accessible, because
nb_devs=N-1 with the current implementaion.

In order to prevent this kind of behavior, let's remove the check with
nb_devs and iterate in all the rte_crypto_devices elements: if data is
not NULL, that means a valid cryptodev is available.

Also, remove max_devs field and use RTE_CRYPTO_MAX_DEVS in order to
unify the code.

Fixes: d11b0f30df88 ("cryptodev: introduce API and framework for crypto devices")
Cc: stable@dpdk.org

Signed-off-by: Julien Meunier <julien.meunier@nokia.com>
---
v2:
* Restore nb_devs
* Update headline (check-git-log.sh)
* Update commit log

 lib/librte_cryptodev/rte_cryptodev.c | 30 +++++++++++++++++++++---------
 1 file changed, 21 insertions(+), 9 deletions(-)

Comments

Akhil Goyal Oct. 16, 2019, 7:02 a.m. UTC | #1 
Hi Julien,

A couple of nits. Please see inline.

Apart from that
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>

> 
> Each cryptodev are indexed with dev_id in the global rte_crypto_devices
> variable. nb_devs is incremented / decremented each time a cryptodev is
> created / deleted. The goal of nb_devs was to prevent the user to get an
> invalid dev_id.
> 
> Let's imagine DPDK has configured N cryptodevs. If the cryptodev=1 is
> removed at runtime, the latest cryptodev N cannot be accessible, because
> nb_devs=N-1 with the current implementaion.
> 
> In order to prevent this kind of behavior, let's remove the check with
> nb_devs and iterate in all the rte_crypto_devices elements: if data is
> not NULL, that means a valid cryptodev is available.
> 
> Also, remove max_devs field and use RTE_CRYPTO_MAX_DEVS in order to
> unify the code.
> 
> Fixes: d11b0f30df88 ("cryptodev: introduce API and framework for crypto
> devices")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Julien Meunier <julien.meunier@nokia.com>
> ---
> v2:
> * Restore nb_devs
> * Update headline (check-git-log.sh)
> * Update commit log
> 
>  lib/librte_cryptodev/rte_cryptodev.c | 30 +++++++++++++++++++++---------
>  1 file changed, 21 insertions(+), 9 deletions(-)
> 
> diff --git a/lib/librte_cryptodev/rte_cryptodev.c
> b/lib/librte_cryptodev/rte_cryptodev.c
> index b16ef7b..933c38d 100644
> --- a/lib/librte_cryptodev/rte_cryptodev.c
> +++ b/lib/librte_cryptodev/rte_cryptodev.c
> @@ -50,8 +50,7 @@
>  static struct rte_cryptodev_global cryptodev_globals = {
> 		.devs			= rte_crypto_devices,
>  		.data			= { NULL },
> -		.nb_devs		= 0,
> -		.max_devs		= RTE_CRYPTO_MAX_DEVS
> +		.nb_devs		= 0
>  };

Max_devs field shall also be removed from struct rte_cryptodev_global in "lib/librte_cryptodev/rte_cryptodev_pmd.h"
> 
>  /* spinlock for crypto device callbacks */
> @@ -512,7 +511,7 @@ struct rte_cryptodev *
>  	if (name == NULL)
>  		return NULL;
> 
> -	for (i = 0; i < cryptodev_globals.max_devs; i++) {
> +	for (i = 0; i < RTE_CRYPTO_MAX_DEVS; i++) {
>  		dev = &cryptodev_globals.devs[i];
> 
>  		if ((dev->attached == RTE_CRYPTODEV_ATTACHED) &&
> @@ -523,12 +522,21 @@ struct rte_cryptodev *
>  	return NULL;
>  }
> 
> +static uint8_t
> +rte_cryptodev_is_valid_device_data(uint8_t dev_id)
> +{
> +	if (rte_crypto_devices[dev_id].data == NULL)
> +		return 0;
> +
> +	return 1;
> +}

rte_cryptodev_is_valid_device_data should be a static inline function.

> +
>  unsigned int
>  rte_cryptodev_pmd_is_valid_dev(uint8_t dev_id)
>  {
>  	struct rte_cryptodev *dev = NULL;
> 
> -	if (dev_id >= cryptodev_globals.nb_devs)
> +	if (!rte_cryptodev_is_valid_device_data(dev_id))
>  		return 0;
> 
>  	dev = rte_cryptodev_pmd_get_dev(dev_id);
> @@ -547,12 +555,15 @@ struct rte_cryptodev *
>  	if (name == NULL)
>  		return -1;
> 
> -	for (i = 0; i < cryptodev_globals.nb_devs; i++)
> +	for (i = 0; i < RTE_CRYPTO_MAX_DEVS; i++) {
> +		if (!rte_cryptodev_is_valid_device_data(i))
> +			continue;
>  		if ((strcmp(cryptodev_globals.devs[i].data->name, name)
>  				== 0) &&
>  				(cryptodev_globals.devs[i].attached ==
>  						RTE_CRYPTODEV_ATTACHED))
>  			return i;
> +	}
> 
>  	return -1;
>  }
> @@ -568,7 +579,7 @@ struct rte_cryptodev *
>  {
>  	uint8_t i, dev_count = 0;
> 
> -	for (i = 0; i < cryptodev_globals.max_devs; i++)
> +	for (i = 0; i < RTE_CRYPTO_MAX_DEVS; i++)
>  		if (cryptodev_globals.devs[i].driver_id == driver_id &&
>  			cryptodev_globals.devs[i].attached ==
>  					RTE_CRYPTODEV_ATTACHED)
> @@ -583,9 +594,10 @@ struct rte_cryptodev *
>  {
>  	uint8_t i, count = 0;
>  	struct rte_cryptodev *devs = cryptodev_globals.devs;
> -	uint8_t max_devs = cryptodev_globals.max_devs;
> 
> -	for (i = 0; i < max_devs && count < nb_devices;	i++) {
> +	for (i = 0; i < RTE_CRYPTO_MAX_DEVS && count < nb_devices; i++) {
> +		if (!rte_cryptodev_is_valid_device_data(i))
> +			continue;
> 
>  		if (devs[i].attached == RTE_CRYPTODEV_ATTACHED) {
>  			int cmp;
> @@ -1101,7 +1113,7 @@ struct rte_cryptodev *
>  {
>  	struct rte_cryptodev *dev;
> 
> -	if (dev_id >= cryptodev_globals.nb_devs) {
> +	if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
>  		CDEV_LOG_ERR("Invalid dev_id=%d", dev_id);
>  		return;
>  	}
> --
> 1.8.3.1
Julien Meunier Oct. 16, 2019, 7:16 a.m. UTC | #2 
Hi,

Inline reply

On 16/10/2019 09:02, Akhil Goyal wrote:
> Hi Julien,
> 
> A couple of nits. Please see inline.
> 
> Apart from that
> Acked-by: Akhil Goyal <akhil.goyal@nxp.com>
> 
>>
>> Each cryptodev are indexed with dev_id in the global rte_crypto_devices
>> variable. nb_devs is incremented / decremented each time a cryptodev is
>> created / deleted. The goal of nb_devs was to prevent the user to get an
>> invalid dev_id.
>>
>> Let's imagine DPDK has configured N cryptodevs. If the cryptodev=1 is
>> removed at runtime, the latest cryptodev N cannot be accessible, because
>> nb_devs=N-1 with the current implementaion.
>>
>> In order to prevent this kind of behavior, let's remove the check with
>> nb_devs and iterate in all the rte_crypto_devices elements: if data is
>> not NULL, that means a valid cryptodev is available.
>>
>> Also, remove max_devs field and use RTE_CRYPTO_MAX_DEVS in order to
>> unify the code.
>>
>> Fixes: d11b0f30df88 ("cryptodev: introduce API and framework for crypto
>> devices")
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Julien Meunier <julien.meunier@nokia.com>
>> ---
>> v2:
>> * Restore nb_devs
>> * Update headline (check-git-log.sh)
>> * Update commit log
>>
>>   lib/librte_cryptodev/rte_cryptodev.c | 30 +++++++++++++++++++++---------
>>   1 file changed, 21 insertions(+), 9 deletions(-)
>>
>> diff --git a/lib/librte_cryptodev/rte_cryptodev.c
>> b/lib/librte_cryptodev/rte_cryptodev.c
>> index b16ef7b..933c38d 100644
>> --- a/lib/librte_cryptodev/rte_cryptodev.c
>> +++ b/lib/librte_cryptodev/rte_cryptodev.c
>> @@ -50,8 +50,7 @@
>>   static struct rte_cryptodev_global cryptodev_globals = {
>> 		.devs			= rte_crypto_devices,
>>   		.data			= { NULL },
>> -		.nb_devs		= 0,
>> -		.max_devs		= RTE_CRYPTO_MAX_DEVS
>> +		.nb_devs		= 0
>>   };
> 
> Max_devs field shall also be removed from struct rte_cryptodev_global in "lib/librte_cryptodev/rte_cryptodev_pmd.h"

Oops, yes, I didn't clean-up all the code :) I will do that.


>>
>>   /* spinlock for crypto device callbacks */
>> @@ -512,7 +511,7 @@ struct rte_cryptodev *
>>   	if (name == NULL)
>>   		return NULL;
>>
>> -	for (i = 0; i < cryptodev_globals.max_devs; i++) {
>> +	for (i = 0; i < RTE_CRYPTO_MAX_DEVS; i++) {
>>   		dev = &cryptodev_globals.devs[i];
>>
>>   		if ((dev->attached == RTE_CRYPTODEV_ATTACHED) &&
>> @@ -523,12 +522,21 @@ struct rte_cryptodev *
>>   	return NULL;
>>   }
>>
>> +static uint8_t
>> +rte_cryptodev_is_valid_device_data(uint8_t dev_id)
>> +{
>> +	if (rte_crypto_devices[dev_id].data == NULL)
>> +		return 0;
>> +
>> +	return 1;
>> +}
> 
> rte_cryptodev_is_valid_device_data should be a static inline function.

OK.

> 
>> +
>>   unsigned int
>>   rte_cryptodev_pmd_is_valid_dev(uint8_t dev_id)
>>   {
>>   	struct rte_cryptodev *dev = NULL;
>>
>> -	if (dev_id >= cryptodev_globals.nb_devs)
>> +	if (!rte_cryptodev_is_valid_device_data(dev_id))
>>   		return 0;
>>
>>   	dev = rte_cryptodev_pmd_get_dev(dev_id);
>> @@ -547,12 +555,15 @@ struct rte_cryptodev *
>>   	if (name == NULL)
>>   		return -1;
>>
>> -	for (i = 0; i < cryptodev_globals.nb_devs; i++)
>> +	for (i = 0; i < RTE_CRYPTO_MAX_DEVS; i++) {
>> +		if (!rte_cryptodev_is_valid_device_data(i))
>> +			continue;
>>   		if ((strcmp(cryptodev_globals.devs[i].data->name, name)
>>   				== 0) &&
>>   				(cryptodev_globals.devs[i].attached ==
>>   						RTE_CRYPTODEV_ATTACHED))
>>   			return i;
>> +	}
>>
>>   	return -1;
>>   }
>> @@ -568,7 +579,7 @@ struct rte_cryptodev *
>>   {
>>   	uint8_t i, dev_count = 0;
>>
>> -	for (i = 0; i < cryptodev_globals.max_devs; i++)
>> +	for (i = 0; i < RTE_CRYPTO_MAX_DEVS; i++)
>>   		if (cryptodev_globals.devs[i].driver_id == driver_id &&
>>   			cryptodev_globals.devs[i].attached ==
>>   					RTE_CRYPTODEV_ATTACHED)
>> @@ -583,9 +594,10 @@ struct rte_cryptodev *
>>   {
>>   	uint8_t i, count = 0;
>>   	struct rte_cryptodev *devs = cryptodev_globals.devs;
>> -	uint8_t max_devs = cryptodev_globals.max_devs;
>>
>> -	for (i = 0; i < max_devs && count < nb_devices;	i++) {
>> +	for (i = 0; i < RTE_CRYPTO_MAX_DEVS && count < nb_devices; i++) {
>> +		if (!rte_cryptodev_is_valid_device_data(i))
>> +			continue;
>>
>>   		if (devs[i].attached == RTE_CRYPTODEV_ATTACHED) {
>>   			int cmp;
>> @@ -1101,7 +1113,7 @@ struct rte_cryptodev *
>>   {
>>   	struct rte_cryptodev *dev;
>>
>> -	if (dev_id >= cryptodev_globals.nb_devs) {
>> +	if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
>>   		CDEV_LOG_ERR("Invalid dev_id=%d", dev_id);
>>   		return;
>>   	}
>> --
>> 1.8.3.1
> 

Thanks,
diff mbox series

Patch

diff --git a/lib/librte_cryptodev/rte_cryptodev.c b/lib/librte_cryptodev/rte_cryptodev.c
index b16ef7b..933c38d 100644
--- a/lib/librte_cryptodev/rte_cryptodev.c
+++ b/lib/librte_cryptodev/rte_cryptodev.c
@@ -50,8 +50,7 @@ 
 static struct rte_cryptodev_global cryptodev_globals = {
		.devs			= rte_crypto_devices,
 		.data			= { NULL },
-		.nb_devs		= 0,
-		.max_devs		= RTE_CRYPTO_MAX_DEVS
+		.nb_devs		= 0
 };
 
 /* spinlock for crypto device callbacks */
@@ -512,7 +511,7 @@  struct rte_cryptodev *
 	if (name == NULL)
 		return NULL;
 
-	for (i = 0; i < cryptodev_globals.max_devs; i++) {
+	for (i = 0; i < RTE_CRYPTO_MAX_DEVS; i++) {
 		dev = &cryptodev_globals.devs[i];
 
 		if ((dev->attached == RTE_CRYPTODEV_ATTACHED) &&
@@ -523,12 +522,21 @@  struct rte_cryptodev *
 	return NULL;
 }
 
+static uint8_t
+rte_cryptodev_is_valid_device_data(uint8_t dev_id)
+{
+	if (rte_crypto_devices[dev_id].data == NULL)
+		return 0;
+
+	return 1;
+}
+
 unsigned int
 rte_cryptodev_pmd_is_valid_dev(uint8_t dev_id)
 {
 	struct rte_cryptodev *dev = NULL;
 
-	if (dev_id >= cryptodev_globals.nb_devs)
+	if (!rte_cryptodev_is_valid_device_data(dev_id))
 		return 0;
 
 	dev = rte_cryptodev_pmd_get_dev(dev_id);
@@ -547,12 +555,15 @@  struct rte_cryptodev *
 	if (name == NULL)
 		return -1;
 
-	for (i = 0; i < cryptodev_globals.nb_devs; i++)
+	for (i = 0; i < RTE_CRYPTO_MAX_DEVS; i++) {
+		if (!rte_cryptodev_is_valid_device_data(i))
+			continue;
 		if ((strcmp(cryptodev_globals.devs[i].data->name, name)
 				== 0) &&
 				(cryptodev_globals.devs[i].attached ==
 						RTE_CRYPTODEV_ATTACHED))
 			return i;
+	}
 
 	return -1;
 }
@@ -568,7 +579,7 @@  struct rte_cryptodev *
 {
 	uint8_t i, dev_count = 0;
 
-	for (i = 0; i < cryptodev_globals.max_devs; i++)
+	for (i = 0; i < RTE_CRYPTO_MAX_DEVS; i++)
 		if (cryptodev_globals.devs[i].driver_id == driver_id &&
 			cryptodev_globals.devs[i].attached ==
 					RTE_CRYPTODEV_ATTACHED)
@@ -583,9 +594,10 @@  struct rte_cryptodev *
 {
 	uint8_t i, count = 0;
 	struct rte_cryptodev *devs = cryptodev_globals.devs;
-	uint8_t max_devs = cryptodev_globals.max_devs;
 
-	for (i = 0; i < max_devs && count < nb_devices;	i++) {
+	for (i = 0; i < RTE_CRYPTO_MAX_DEVS && count < nb_devices; i++) {
+		if (!rte_cryptodev_is_valid_device_data(i))
+			continue;
 
 		if (devs[i].attached == RTE_CRYPTODEV_ATTACHED) {
 			int cmp;
@@ -1101,7 +1113,7 @@  struct rte_cryptodev *
 {
 	struct rte_cryptodev *dev;
 
-	if (dev_id >= cryptodev_globals.nb_devs) {
+	if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 		CDEV_LOG_ERR("Invalid dev_id=%d", dev_id);
 		return;
 	}