netdev - [PATCH net-next v9 4/7] net/mlx5: Kconfig: Make tc offload depend on tc skb extension

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Date:   Mon, 6 Feb 2023 19:44:00 +0200
From:   Paul Blakey <paulb@...dia.com>
To:     Paul Blakey <paulb@...dia.com>, <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>
CC:     Oz Shlomo <ozsh@...dia.com>, Jiri Pirko <jiri@...dia.com>,
        Roi Dayan <roid@...dia.com>, Vlad Buslov <vladbu@...dia.com>
Subject: [PATCH net-next v9 4/7] net/mlx5: Kconfig: Make tc offload depend on tc skb extension

Tc skb extension is a basic requirement for using tc
offload to support correct restoration on action miss.

Depend on it.

Signed-off-by: Paul Blakey <paulb@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/Kconfig     | 4 ++--
 drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c | 2 --
 drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c  | 7 -------
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c     | 2 --
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.h     | 2 --
 5 files changed, 2 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Kconfig b/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
index 26685fd0fdaa..bb1d7b039a7e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
+++ b/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
@@ -85,7 +85,7 @@ config MLX5_BRIDGE
 
 config MLX5_CLS_ACT
 	bool "MLX5 TC classifier action support"
-	depends on MLX5_ESWITCH && NET_CLS_ACT
+	depends on MLX5_ESWITCH && NET_CLS_ACT && NET_TC_SKB_EXT
 	default y
 	help
 	  mlx5 ConnectX offloads support for TC classifier action (NET_CLS_ACT),
@@ -100,7 +100,7 @@ config MLX5_CLS_ACT
 
 config MLX5_TC_CT
 	bool "MLX5 TC connection tracking offload support"
-	depends on MLX5_CLS_ACT && NF_FLOW_TABLE && NET_ACT_CT && NET_TC_SKB_EXT
+	depends on MLX5_CLS_ACT && NF_FLOW_TABLE && NET_ACT_CT
 	default y
 	help
 	  Say Y here if you want to support offloading connection tracking rules
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c
index b08339d986d5..fcb4cf526727 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c
@@ -762,7 +762,6 @@ static bool mlx5e_restore_skb_chain(struct sk_buff *skb, u32 chain, u32 reg_c1,
 	struct mlx5e_priv *priv = netdev_priv(skb->dev);
 	u32 tunnel_id = (reg_c1 >> ESW_TUN_OFFSET) & TUNNEL_ID_MASK;
 
-#if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
 	if (chain) {
 		struct mlx5_rep_uplink_priv *uplink_priv;
 		struct mlx5e_rep_priv *uplink_rpriv;
@@ -784,7 +783,6 @@ static bool mlx5e_restore_skb_chain(struct sk_buff *skb, u32 chain, u32 reg_c1,
 					      zone_restore_id))
 			return false;
 	}
-#endif /* CONFIG_NET_TC_SKB_EXT */
 
 	return mlx5e_restore_tunnel(priv, skb, tc_priv, tunnel_id);
 }
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c
index 193562c14c44..2251f33c3865 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c
@@ -2078,13 +2078,6 @@ mlx5_tc_ct_init_check_support(struct mlx5e_priv *priv,
 	const char *err_msg = NULL;
 	int err = 0;
 
-#if !IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
-	/* cannot restore chain ID on HW miss */
-
-	err_msg = "tc skb extension missing";
-	err = -EOPNOTSUPP;
-	goto out_err;
-#endif
 	if (IS_ERR_OR_NULL(post_act)) {
 		/* Ignore_flow_level support isn't supported by default for VFs and so post_act
 		 * won't be supported. Skip showing error msg.
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 4e6f5caf8ab6..b173c7e9e553 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -5565,7 +5565,6 @@ int mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
 bool mlx5e_tc_update_skb(struct mlx5_cqe64 *cqe,
 			 struct sk_buff *skb)
 {
-#if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
 	u32 chain = 0, chain_tag, reg_b, zone_restore_id;
 	struct mlx5e_priv *priv = netdev_priv(skb->dev);
 	struct mlx5_mapped_obj mapped_obj;
@@ -5603,7 +5602,6 @@ bool mlx5e_tc_update_skb(struct mlx5_cqe64 *cqe,
 		netdev_dbg(priv->netdev, "Invalid mapped object type: %d\n", mapped_obj.type);
 		return false;
 	}
-#endif /* CONFIG_NET_TC_SKB_EXT */
 
 	return true;
 }
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
index ce516dc7f3fd..ee9c8f31491e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
@@ -370,7 +370,6 @@ struct mlx5e_tc_table *mlx5e_tc_table_alloc(void);
 void mlx5e_tc_table_free(struct mlx5e_tc_table *tc);
 static inline bool mlx5e_cqe_regb_chain(struct mlx5_cqe64 *cqe)
 {
-#if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
 	u32 chain, reg_b;
 
 	reg_b = be32_to_cpu(cqe->ft_metadata);
@@ -381,7 +380,6 @@ static inline bool mlx5e_cqe_regb_chain(struct mlx5_cqe64 *cqe)
 	chain = reg_b & MLX5E_TC_TABLE_CHAIN_TAG_MASK;
 	if (chain)
 		return true;
-#endif
 
 	return false;
 }
-- 
2.30.1