net/i40e: fix FPK VF overwrite PF RSS LUT
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Commit Message
i40e_aq_set_rss_lut should set rigister according
to the vsi->type. if not, VF may overwrite the rigister
of PF
Fixes: d0a349409bd7 ("i40e: support AQ based RSS config")
Cc: stable@dpdk.org
Signed-off-by: Wu Yanglong <yanglong.wu@intel.com>
---
drivers/net/i40e/i40e_ethdev.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
Comments
> -----Original Message-----
> From: Wu, Yanglong
> Sent: Monday, January 14, 2019 4:24 PM
> To: dev@dpdk.org
> Cc: Hall, Ryan E <ryan.e.hall@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>;
> Wu, Yanglong <yanglong.wu@intel.com>; stable@dpdk.org
> Subject: [PATCH] net/i40e: fix FPK VF overwrite PF RSS LUT
I think this is not a just for FPK, but for all i40e family right?
>
> i40e_aq_set_rss_lut should set rigister according to the vsi->type. if not, VF
> may overwrite the rigister of PF
>
> Fixes: d0a349409bd7 ("i40e: support AQ based RSS config")
> Cc: stable@dpdk.org
>
> Signed-off-by: Wu Yanglong <yanglong.wu@intel.com>
It should be "Yanglong Wu"
> ---
> drivers/net/i40e/i40e_ethdev.c | 9 +++++++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index a6b97e164..d4d99edcd 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -4183,8 +4183,13 @@ i40e_get_rss_lut(struct i40e_vsi *vsi, uint8_t *lut,
> uint16_t lut_size)
> return -EINVAL;
>
> if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
> - ret = i40e_aq_get_rss_lut(hw, vsi->vsi_id, TRUE,
> - lut, lut_size);
> + if (vsi->type == I40E_VSI_SRIOV) {
> + ret = i40e_aq_get_rss_lut(hw, vsi->vsi_id, FALSE,
> + lut, lut_size);
> + } else {
> + ret = i40e_aq_get_rss_lut(hw, vsi->vsi_id, TRUE,
> + lut, lut_size);
> + }
You can simplify above code to below single line
ret = i40e_aq_get_rss_lut(hw, vsi->vsi_id, vsi->type != I40E_VSI_SRIOV, lut, lut_size);
> if (ret) {
> PMD_DRV_LOG(ERR, "Failed to get RSS lookup table");
> return ret;
> --
> 2.11.0
Hi qi,
-----Original Message-----
From: Zhang, Qi Z
Sent: Monday, January 14, 2019 8:48 PM
To: Wu, Yanglong <yanglong.wu@intel.com>; dev@dpdk.org
Cc: Hall, Ryan E <ryan.e.hall@intel.com>; stable@dpdk.org
Subject: RE: [PATCH] net/i40e: fix FPK VF overwrite PF RSS LUT
> -----Original Message-----
> From: Wu, Yanglong
> Sent: Monday, January 14, 2019 4:24 PM
> To: dev@dpdk.org
> Cc: Hall, Ryan E <ryan.e.hall@intel.com>; Zhang, Qi Z
> <qi.z.zhang@intel.com>; Wu, Yanglong <yanglong.wu@intel.com>;
> stable@dpdk.org
> Subject: [PATCH] net/i40e: fix FPK VF overwrite PF RSS LUT
I think this is not a just for FPK, but for all i40e family right?
From the code, just FPK have this problem. it not well designed when it transfer to admin queue.
>
> i40e_aq_set_rss_lut should set rigister according to the vsi->type. if
> not, VF may overwrite the rigister of PF
>
> Fixes: d0a349409bd7 ("i40e: support AQ based RSS config")
> Cc: stable@dpdk.org
>
> Signed-off-by: Wu Yanglong <yanglong.wu@intel.com>
It should be "Yanglong Wu"
Ok, will send the version two.
> ---
> drivers/net/i40e/i40e_ethdev.c | 9 +++++++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/i40e/i40e_ethdev.c
> b/drivers/net/i40e/i40e_ethdev.c index a6b97e164..d4d99edcd 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -4183,8 +4183,13 @@ i40e_get_rss_lut(struct i40e_vsi *vsi, uint8_t
> *lut, uint16_t lut_size)
> return -EINVAL;
>
> if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
> - ret = i40e_aq_get_rss_lut(hw, vsi->vsi_id, TRUE,
> - lut, lut_size);
> + if (vsi->type == I40E_VSI_SRIOV) {
> + ret = i40e_aq_get_rss_lut(hw, vsi->vsi_id, FALSE,
> + lut, lut_size);
> + } else {
> + ret = i40e_aq_get_rss_lut(hw, vsi->vsi_id, TRUE,
> + lut, lut_size);
> + }
You can simplify above code to below single line
ret = i40e_aq_get_rss_lut(hw, vsi->vsi_id, vsi->type != I40E_VSI_SRIOV, lut, lut_size);
thanks, it would be better.
> if (ret) {
> PMD_DRV_LOG(ERR, "Failed to get RSS lookup table");
> return ret;
> --
> 2.11.0
@@ -4183,8 +4183,13 @@ i40e_get_rss_lut(struct i40e_vsi *vsi, uint8_t *lut, uint16_t lut_size)
return -EINVAL;
if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
- ret = i40e_aq_get_rss_lut(hw, vsi->vsi_id, TRUE,
- lut, lut_size);
+ if (vsi->type == I40E_VSI_SRIOV) {
+ ret = i40e_aq_get_rss_lut(hw, vsi->vsi_id, FALSE,
+ lut, lut_size);
+ } else {
+ ret = i40e_aq_get_rss_lut(hw, vsi->vsi_id, TRUE,
+ lut, lut_size);
+ }
if (ret) {
PMD_DRV_LOG(ERR, "Failed to get RSS lookup table");
return ret;