[dpdk-dev] [PATCH] app/testpmd: fixed get RSS conf

[dpdk-dev] [PATCH] app/testpmd: fixed get RSS conf

[Qiming Yang]

I40e do not allow to get rss hena only, need to get rss
key meanwhile.

Fixes: 16321de09396 ("ethdev: allow to get RSS hash functions and key")
Cc: stable@dpdk.org

Signed-off-by: Qiming Yang <qiming.yang@intel.com>
---
 app/test-pmd/config.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index b9e5dd9..482c4f5 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -1764,8 +1764,7 @@ port_rss_hash_conf_show(portid_t port_id, int show_rss_key)
 		return;
 	}
 
-	/* Get RSS hash key if asked to display it */
-	rss_conf.rss_key = (show_rss_key) ? rss_key : NULL;
+	rss_conf.rss_key = rss_key;
 	rss_conf.rss_key_len = hash_key_size;
 	diag = rte_eth_dev_rss_hash_conf_get(port_id, &rss_conf);
 	if (diag != 0) {
@@ -1793,6 +1792,8 @@ port_rss_hash_conf_show(portid_t port_id, int show_rss_key)
 			printf("%s ", rss_type_table[i].str);
 	}
 	printf("\n");
+
+	/* Get RSS hash key if asked to display it */
 	if (!show_rss_key)
 		return;
 	printf("RSS key:\n");
-- 
2.9.5

Re: [dpdk-dev] [dpdk-stable] [PATCH] app/testpmd: fixed get RSS conf

[Ferruh Yigit]

On 12/21/2018 1:01 PM, Qiming Yang wrote:
> I40e do not allow to get rss hena only, need to get rss
> key meanwhile.

i40e_get_rss_key() returns error if 'rss_conf.rss_key' is NULL, this patch is
fixing the error case.

But instead of fixing this in application level, it can be better to fix in
driver level. Because 'rte_eth_dev_rss_hash_conf_get()' API doesn't dictate
'rss_conf.rss_key' to be not NULL, so any other application can cause same problem.

Possible solution can be to have an interim 'key' buffer in
'i40e_dev_rss_hash_conf_get()' and copy it to 'rss_conf.rss_key' if it is not NULL.

> 
> Fixes: 16321de09396 ("ethdev: allow to get RSS hash functions and key")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Qiming Yang <qiming.yang@intel.com>
> ---
>  app/test-pmd/config.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
> index b9e5dd9..482c4f5 100644
> --- a/app/test-pmd/config.c
> +++ b/app/test-pmd/config.c
> @@ -1764,8 +1764,7 @@ port_rss_hash_conf_show(portid_t port_id, int show_rss_key)
>  		return;
>  	}
>  
> -	/* Get RSS hash key if asked to display it */
> -	rss_conf.rss_key = (show_rss_key) ? rss_key : NULL;
> +	rss_conf.rss_key = rss_key;
>  	rss_conf.rss_key_len = hash_key_size;
>  	diag = rte_eth_dev_rss_hash_conf_get(port_id, &rss_conf);
>  	if (diag != 0) {
> @@ -1793,6 +1792,8 @@ port_rss_hash_conf_show(portid_t port_id, int show_rss_key)
>  			printf("%s ", rss_type_table[i].str);
>  	}
>  	printf("\n");
> +
> +	/* Get RSS hash key if asked to display it */
>  	if (!show_rss_key)
>  		return;
>  	printf("RSS key:\n");
> 

Re: [dpdk-dev] [dpdk-stable] [PATCH] app/testpmd: fixed get RSS conf

[Yang, Qiming]

Thanks Ferruh, will fix in driver level and then send v2 later.

-----Original Message-----
From: Yigit, Ferruh 
Sent: Friday, December 21, 2018 10:26 PM
To: Yang, Qiming <qiming.yang@intel.com>; dev@dpdk.org
Cc: stable@dpdk.org
Subject: Re: [dpdk-stable] [PATCH] app/testpmd: fixed get RSS conf

On 12/21/2018 1:01 PM, Qiming Yang wrote:
> I40e do not allow to get rss hena only, need to get rss key meanwhile.

i40e_get_rss_key() returns error if 'rss_conf.rss_key' is NULL, this patch is fixing the error case.

But instead of fixing this in application level, it can be better to fix in driver level. Because 'rte_eth_dev_rss_hash_conf_get()' API doesn't dictate 'rss_conf.rss_key' to be not NULL, so any other application can cause same problem.

Possible solution can be to have an interim 'key' buffer in 'i40e_dev_rss_hash_conf_get()' and copy it to 'rss_conf.rss_key' if it is not NULL.

> 
> Fixes: 16321de09396 ("ethdev: allow to get RSS hash functions and 
> key")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Qiming Yang <qiming.yang@intel.com>
> ---
>  app/test-pmd/config.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c index 
> b9e5dd9..482c4f5 100644
> --- a/app/test-pmd/config.c
> +++ b/app/test-pmd/config.c
> @@ -1764,8 +1764,7 @@ port_rss_hash_conf_show(portid_t port_id, int show_rss_key)
>  		return;
>  	}
>  
> -	/* Get RSS hash key if asked to display it */
> -	rss_conf.rss_key = (show_rss_key) ? rss_key : NULL;
> +	rss_conf.rss_key = rss_key;
>  	rss_conf.rss_key_len = hash_key_size;
>  	diag = rte_eth_dev_rss_hash_conf_get(port_id, &rss_conf);
>  	if (diag != 0) {
> @@ -1793,6 +1792,8 @@ port_rss_hash_conf_show(portid_t port_id, int show_rss_key)
>  			printf("%s ", rss_type_table[i].str);
>  	}
>  	printf("\n");
> +
> +	/* Get RSS hash key if asked to display it */
>  	if (!show_rss_key)
>  		return;
>  	printf("RSS key:\n");
> 

[dpdk-dev] [PATCH v2] net/i40e: fixed get RSS conf

[Qiming Yang]

rte_eth_dev_rss_hash_conf_get API doesn't force 'rss_conf.rss_key'
to be not NULL, so rss_key = NULL should be alllowed in i40e
driver.

Fixes: 16321de09396 ("ethdev: allow to get RSS hash functions and key")
Cc: stable@dpdk.org

Signed-off-by: Qiming Yang <qiming.yang@intel.com>
---
 drivers/net/i40e/i40e_ethdev.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 8dc1a4a..a6b97e1 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -7407,7 +7407,7 @@ i40e_get_rss_key(struct i40e_vsi *vsi, uint8_t *key, uint8_t *key_len)
 	int ret;
 
 	if (!key || !key_len)
-		return -EINVAL;
+		return 0;
 
 	if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
 		ret = i40e_aq_get_rss_key(hw, vsi->vsi_id,
@@ -7492,6 +7492,9 @@ i40e_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 	uint64_t hena;
 	int ret;
 
+	if (!rss_conf)
+		return -EINVAL;
+
 	ret = i40e_get_rss_key(pf->main_vsi, rss_conf->rss_key,
 			 &rss_conf->rss_key_len);
 	if (ret)
-- 
2.9.5

Re: [dpdk-dev] [PATCH v2] net/i40e: fixed get RSS conf

[Zhang, Qi Z]

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Qiming Yang
> Sent: Monday, December 24, 2018 11:34 PM
> To: dev@dpdk.org
> Cc: Yigit, Ferruh <ferruh.yigit@intel.com>; Yang, Qiming
> <qiming.yang@intel.com>; stable@dpdk.org
> Subject: [dpdk-dev] [PATCH v2] net/i40e: fixed get RSS conf

s/fixed/fix
> 
> rte_eth_dev_rss_hash_conf_get API doesn't force 'rss_conf.rss_key'
> to be not NULL, so rss_key = NULL should be alllowed in i40e driver.

s/alllowed/allowed
> 
> Fixes: 16321de09396 ("ethdev: allow to get RSS hash functions and key")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Qiming Yang <qiming.yang@intel.com>

Acked-by: Qi Zhang <qi.z.zhang@intel.com>

Applied to dpdk-next-net-intel with above typo fix.

Thanks
Qi

[dpdk-dev] [PATCH v3] net/i40e: fix get RSS conf issue

[Qiming Yang]

rte_eth_dev_rss_hash_conf_get API doesn't force 'rss_conf.rss_key'
to be not NULL, so rss_key = NULL should be allowed in i40e
driver.

Fixes: 16321de09396 ("ethdev: allow to get RSS hash functions and key")
Cc: stable@dpdk.org

Change-Id: I992847995cac44172694ea15ab30c4d1e7e48957
Signed-off-by: Qiming Yang <qiming.yang@intel.com>
---
 drivers/net/i40e/i40e_ethdev.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 8dc1a4a..a6b97e1 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -7407,7 +7407,7 @@ i40e_get_rss_key(struct i40e_vsi *vsi, uint8_t *key, uint8_t *key_len)
 	int ret;
 
 	if (!key || !key_len)
-		return -EINVAL;
+		return 0;
 
 	if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
 		ret = i40e_aq_get_rss_key(hw, vsi->vsi_id,
@@ -7492,6 +7492,9 @@ i40e_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 	uint64_t hena;
 	int ret;
 
+	if (!rss_conf)
+		return -EINVAL;
+
 	ret = i40e_get_rss_key(pf->main_vsi, rss_conf->rss_key,
 			 &rss_conf->rss_key_len);
 	if (ret)
-- 
2.9.5