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Date: Thu, 2 Feb 2023 13:11:57 +0200
From: Leon Romanovsky <leon@...nel.org>
To: Paul Blakey <paulb@...dia.com>
Cc: netdev@...r.kernel.org, Saeed Mahameed <saeedm@...dia.com>,
Paolo Abeni <pabeni@...hat.com>,
Jakub Kicinski <kuba@...nel.org>,
Eric Dumazet <edumazet@...gle.com>,
Jamal Hadi Salim <jhs@...atatu.com>,
Cong Wang <xiyou.wangcong@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Oz Shlomo <ozsh@...dia.com>, Jiri Pirko <jiri@...dia.com>,
Roi Dayan <roid@...dia.com>, Vlad Buslov <vladbu@...dia.com>
Subject: Re: [PATCH net-next v7 6/6] net/mlx5e: TC, Set CT miss to the
specific ct action instance
On Tue, Jan 31, 2023 at 11:10:27AM +0200, Paul Blakey wrote:
> Currently, CT misses restore the missed chain on the tc skb extension so
> tc will continue from the relevant chain. Instead, restore the CT action's
> miss cookie on the extension, which will instruct tc to continue from the
> this specific CT action instance on the relevant filter's action list.
>
> Map the CT action's miss_cookie to a new miss object (ACT_MISS), and use
> this miss mapping instead of the current chain miss object (CHAIN_MISS)
> for CT action misses.
>
> To restore this new miss mapping value, add a RX restore rule for each
> such mapping value.
>
> Signed-off-by: Paul Blakey <paulb@...dia.com>
> Reviewed-by: Roi Dayan <roid@...dia.com>
> Reviewed-by: Oz Sholmo <ozsh@...dia.com>
> ---
> .../ethernet/mellanox/mlx5/core/en/tc_ct.c | 32 +++++-----
> .../ethernet/mellanox/mlx5/core/en/tc_ct.h | 2 +
> .../net/ethernet/mellanox/mlx5/core/en_tc.c | 61 ++++++++++++++++---
> .../net/ethernet/mellanox/mlx5/core/en_tc.h | 6 ++
> .../net/ethernet/mellanox/mlx5/core/eswitch.h | 2 +
> 5 files changed, 79 insertions(+), 24 deletions(-)
<...>
> -static bool mlx5e_tc_restore_skb_chain(struct sk_buff *skb, struct mlx5_tc_ct_priv *ct_priv,
> - u32 chain, u32 zone_restore_id,
> - u32 tunnel_id, struct mlx5e_tc_update_priv *tc_priv)
> +static bool mlx5e_tc_restore_skb_tc_meta(struct sk_buff *skb, struct mlx5_tc_ct_priv *ct_priv,
> + struct mlx5_mapped_obj *mapped_obj, u32 zone_restore_id,
> + u32 tunnel_id, struct mlx5e_tc_update_priv *tc_priv)
> {
> + u32 chain = mapped_obj->type == MLX5_MAPPED_OBJ_CHAIN ? mapped_obj->chain : 0;
> + u64 act_miss_cookie = mapped_obj->type == MLX5_MAPPED_OBJ_ACT_MISS ?
> + mapped_obj->act_miss_cookie : 0;
It will be easier for reader if such assignment is separated from
variables declarations.
> struct mlx5e_priv *priv = netdev_priv(skb->dev);
> struct tc_skb_ext *tc_skb_ext;
<...>
> +void mlx5e_tc_action_miss_mapping_put(struct mlx5e_priv *priv, struct mlx5_flow_attr *attr,
> + u32 act_miss_mapping)
> +{
> + struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
> + struct mapping_ctx *ctx = esw->offloads.reg_c0_obj_pool;
Reversed Christmas tree, please.
Thanks
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