2023-10-19 13:54:48

by Ivan Vecera

[permalink] [raw]
Subject: [PATCH net] i40e: Fix wrong check for I40E_TXR_FLAGS_WB_ON_ITR

The I40E_TXR_FLAGS_WB_ON_ITR is i40e_ring flag and not i40e_pf one.

Fixes: 8e0764b4d6be42 ("i40e/i40evf: Add support for writeback on ITR feature for X722")
Signed-off-by: Ivan Vecera <[email protected]>
---
drivers/net/ethernet/intel/i40e/i40e_txrx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index 0b3a27f118fb97..9c36540846f7a9 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -2847,7 +2847,7 @@ int i40e_napi_poll(struct napi_struct *napi, int budget)
return budget;
}

- if (vsi->back->flags & I40E_TXR_FLAGS_WB_ON_ITR)
+ if (q_vector->tx.ring[0].flags & I40E_TXR_FLAGS_WB_ON_ITR)
q_vector->arm_wb_state = false;

/* Exit the polling mode, but don't re-enable interrupts if stack might
--
2.41.0


2023-10-20 16:42:15

by Pucha, HimasekharX Reddy

[permalink] [raw]
Subject: RE: [Intel-wired-lan] [PATCH net] i40e: Fix wrong check for I40E_TXR_FLAGS_WB_ON_ITR

> -----Original Message-----
> From: Intel-wired-lan <[email protected]> On Behalf Of Ivan Vecera
> Sent: Thursday, October 19, 2023 7:24 PM
> To: [email protected]
> Cc: Catherine Sullivan <[email protected]>; Singhai, Anjali <[email protected]>; Brandeburg, Jesse <[email protected]>; open list <[email protected]>; Eric Dumazet <[email protected]>; Nguyen, Anthony L <[email protected]>; Jeff Kirsher <[email protected]>; moderated list:INTEL ETHERNET DRIVERS <[email protected]>; Jakub Kicinski <[email protected]>; Paolo Abeni <[email protected]>; David S. Miller <[email protected]>
> Subject: [Intel-wired-lan] [PATCH net] i40e: Fix wrong check for I40E_TXR_FLAGS_WB_ON_ITR
>
> The I40E_TXR_FLAGS_WB_ON_ITR is i40e_ring flag and not i40e_pf one.
>
> Fixes: 8e0764b4d6be42 ("i40e/i40evf: Add support for writeback on ITR feature for X722")
> Signed-off-by: Ivan Vecera <[email protected]>
> ---
> drivers/net/ethernet/intel/i40e/i40e_txrx.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>

Tested-by: Pucha Himasekhar Reddy <[email protected]> (A Contingent worker at Intel)

2023-10-25 16:08:53

by Simon Horman

[permalink] [raw]
Subject: Re: [PATCH net] i40e: Fix wrong check for I40E_TXR_FLAGS_WB_ON_ITR

On Thu, Oct 19, 2023 at 03:53:42PM +0200, Ivan Vecera wrote:
> The I40E_TXR_FLAGS_WB_ON_ITR is i40e_ring flag and not i40e_pf one.
>
> Fixes: 8e0764b4d6be42 ("i40e/i40evf: Add support for writeback on ITR feature for X722")
> Signed-off-by: Ivan Vecera <[email protected]>

Thanks,

I agree that I40E_TXR_FLAGS_WB_ON_ITR is consistently used
as a i40e_ring flag, other than the case that is corrected by this patch.

I also agree that the problem was introduced by the cited commit.

Reviewed-by: Simon Horman <[email protected]>