linux-kernel - Re: [PATCH net,v2,5/5] octeontx2-af: fix issue with IPv4 match for RSS

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Message-ID: <CAH-L+nPXV0=wAknOHvM6KCKLj61RsMpN57DMCJuMTc6Ze4vSig@mail.gmail.com>
Date: Wed, 10 Jul 2024 14:39:06 +0530
From: Kalesh Anakkur Purayil <kalesh-anakkur.purayil@...adcom.com>
To: Srujana Challa <schalla@...vell.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, kuba@...nel.org, 
	davem@...emloft.net, pabeni@...hat.com, edumazet@...gle.com, 
	sgoutham@...vell.com, lcherian@...vell.com, gakula@...vell.com, 
	jerinj@...vell.com, hkelam@...vell.com, sbhatta@...vell.com, 
	ndabilpuram@...vell.com, Satheesh Paul <psatheesh@...vell.com>
Subject: Re: [PATCH net,v2,5/5] octeontx2-af: fix issue with IPv4 match for RSS

On Wed, Jul 10, 2024 at 1:24 PM Srujana Challa <schalla@...vell.com> wrote:
>
> From: Satheesh Paul <psatheesh@...vell.com>
>
> While performing RSS based on IPv4, packets with
> IPv4 options are not being considered. Adding changes
> to match both plain IPv4 and IPv4 with option header.
>
> Fixes: 41a7aa7b800d ("octeontx2-af: NIX Rx flowkey configuration for RSS")
> Signed-off-by: Satheesh Paul <psatheesh@...vell.com>

LGTM
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@...adcom.com>
> ---
>  drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> index 19fe3ed5c0ee..3dc828cf6c5a 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> @@ -3866,6 +3866,8 @@ static int get_flowkey_alg_idx(struct nix_hw *nix_hw, u32 flow_cfg)
>
>  /* Mask to match ipv6(NPC_LT_LC_IP6) and ipv6 ext(NPC_LT_LC_IP6_EXT) */
>  #define NPC_LT_LC_IP6_MATCH_MSK ((~(NPC_LT_LC_IP6 ^ NPC_LT_LC_IP6_EXT)) & 0xf)
> +/* Mask to match both ipv4(NPC_LT_LC_IP) and ipv4 ext(NPC_LT_LC_IP_OPT) */
> +#define NPC_LT_LC_IP_MATCH_MSK  ((~(NPC_LT_LC_IP ^ NPC_LT_LC_IP_OPT)) & 0xf)
>
>  static int set_flowkey_fields(struct nix_rx_flowkey_alg *alg, u32 flow_cfg)
>  {
> @@ -3936,7 +3938,7 @@ static int set_flowkey_fields(struct nix_rx_flowkey_alg *alg, u32 flow_cfg)
>                         field->hdr_offset = 9; /* offset */
>                         field->bytesm1 = 0; /* 1 byte */
>                         field->ltype_match = NPC_LT_LC_IP;
> -                       field->ltype_mask = 0xF;
> +                       field->ltype_mask = NPC_LT_LC_IP_MATCH_MSK;
>                         break;
>                 case NIX_FLOW_KEY_TYPE_IPV4:
>                 case NIX_FLOW_KEY_TYPE_INNR_IPV4:
> @@ -3963,8 +3965,7 @@ static int set_flowkey_fields(struct nix_rx_flowkey_alg *alg, u32 flow_cfg)
>                                         field->bytesm1 = 3; /* DIP, 4 bytes */
>                                 }
>                         }
> -
> -                       field->ltype_mask = 0xF; /* Match only IPv4 */
> +                       field->ltype_mask = NPC_LT_LC_IP_MATCH_MSK;
>                         keyoff_marker = false;
>                         break;
>                 case NIX_FLOW_KEY_TYPE_IPV6:
> --
> 2.25.1
>
>


-- 
Regards,
Kalesh A P

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