Subject: [net-next 13/17] net/mlx5e: Test CT and SAMPLE on flow attr

From: Saeed Mahameed <[email-masked]>
Date: Mon, 10 Jan 2022 17:43:31 -0800

From: Roi Dayan <[email-masked]>

Currently the mlx5_flow object contains a single mlx5_attr instance.
However, multi table actions (e.g. CT) instantiate multiple attr instances.
Prepare for multiple attr instances by testing for CT or SAMPLE flag on attr
flags instead of flow flag.

Signed-off-by: Roi Dayan <[email-masked]>
Reviewed-by: Oz Shlomo <[email-masked]>
Signed-off-by: Saeed Mahameed <[email-masked]>
---
 .../mellanox/mlx5/core/en/tc/act/ct.c         |  1 +
 .../mellanox/mlx5/core/en/tc/act/sample.c     |  1 +
 .../ethernet/mellanox/mlx5/core/en/tc_priv.h  | 12 +++
 .../net/ethernet/mellanox/mlx5/core/en_tc.c   | 95 +++++++++++++------
 .../net/ethernet/mellanox/mlx5/core/en_tc.h   |  1 +
 5 files changed, 79 insertions(+), 31 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/ct.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/ct.c
index e8ff94933688..85f0cb88127f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/ct.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/ct.c
@@ -48,6 +48,7 @@ tc_act_parse_ct(struct mlx5e_tc_act_parse_state *parse_state,
 		attr->esw_attr->split_count = attr->esw_attr->out_count;
 
 	if (!clear_action) {
+		attr->flags |= MLX5_ATTR_FLAG_CT;
 		flow_flag_set(parse_state->flow, CT);
 		parse_state->ct = true;
 	}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/sample.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/sample.c
index 8f261204fdb4..539fea13ce9f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/sample.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/sample.c
@@ -36,6 +36,7 @@ tc_act_parse_sample(struct mlx5e_tc_act_parse_state *parse_state,
 	if (act->sample.truncate)
 		sample_attr->trunc_size = act->sample.trunc_size;
 
+	attr->flags |= MLX5_ATTR_FLAG_SAMPLE;
 	flow_flag_set(parse_state->flow, SAMPLE);
 
 	return 0;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_priv.h b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_priv.h
index 375763f1561a..e13619133d53 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_priv.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_priv.h
@@ -112,6 +112,17 @@ struct mlx5e_tc_flow {
 	struct mlx5_flow_attr *attr;
 };
 
+struct mlx5_flow_handle *
+mlx5e_tc_rule_offload(struct mlx5e_priv *priv,
+		      struct mlx5e_tc_flow *flow,
+		      struct mlx5_flow_spec *spec,
+		      struct mlx5_flow_attr *attr);
+
+void
+mlx5e_tc_rule_unoffload(struct mlx5e_priv *priv,
+			struct mlx5e_tc_flow *flow,
+			struct mlx5_flow_attr *attr);
+
 u8 mlx5e_tc_get_ip_version(struct mlx5_flow_spec *spec, bool outer);
 
 struct mlx5_flow_handle *
@@ -174,6 +185,7 @@ struct mlx5_flow_handle *
 mlx5e_tc_offload_to_slow_path(struct mlx5_eswitch *esw,
 			      struct mlx5e_tc_flow *flow,
 			      struct mlx5_flow_spec *spec);
+
 void mlx5e_tc_unoffload_fdb_rules(struct mlx5_eswitch *esw,
 				  struct mlx5e_tc_flow *flow,
 				  struct mlx5_flow_attr *attr);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index d37a5f752b1c..31fdc8192879 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -295,13 +295,65 @@ mlx5_tc_rule_delete(struct mlx5e_priv *priv,
 
 	if (is_mdev_switchdev_mode(priv->mdev)) {
 		mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
-
 		return;
 	}
 
 	mlx5e_del_offloaded_nic_rule(priv, rule, attr);
 }
 
+struct mlx5_flow_handle *
+mlx5e_tc_rule_offload(struct mlx5e_priv *priv,
+		      struct mlx5e_tc_flow *flow,
+		      struct mlx5_flow_spec *spec,
+		      struct mlx5_flow_attr *attr)
+{
+	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
+	u32 tun_id = mlx5e_tc_get_flow_tun_id(flow);
+
+	if (attr->flags & MLX5_ATTR_FLAG_CT) {
+		struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts =
+			&attr->parse_attr->mod_hdr_acts;
+
+		return mlx5_tc_ct_flow_offload(get_ct_priv(priv), flow,
+					       spec, attr,
+					       mod_hdr_acts);
+	}
+
+	if (!is_mdev_switchdev_mode(priv->mdev))
+		return mlx5e_add_offloaded_nic_rule(priv, spec, attr);
+
+	if (attr->flags & MLX5_ATTR_FLAG_SAMPLE)
+		return mlx5e_tc_sample_offload(get_sample_priv(priv), spec, attr, tun_id);
+
+	return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
+}
+
+void
+mlx5e_tc_rule_unoffload(struct mlx5e_priv *priv,
+			struct mlx5e_tc_flow *flow,
+			struct mlx5_flow_attr *attr)
+{
+	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
+	struct mlx5_flow_handle *rule = flow->rule[0];
+
+	if (attr->flags & MLX5_ATTR_FLAG_CT) {
+		mlx5_tc_ct_delete_flow(get_ct_priv(priv), flow, attr);
+		return;
+	}
+
+	if (!is_mdev_switchdev_mode(priv->mdev)) {
+		mlx5e_del_offloaded_nic_rule(priv, rule, attr);
+		return;
+	}
+
+	if (attr->flags & MLX5_ATTR_FLAG_SAMPLE) {
+		mlx5e_tc_sample_unoffload(get_sample_priv(priv), rule, attr);
+		return;
+	}
+
+	mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
+}
+
 int
 mlx5e_tc_match_to_reg_set(struct mlx5_core_dev *mdev,
 			  struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
@@ -1084,7 +1136,7 @@ mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
 			return err;
 	}
 
-	if (flow_flag_test(flow, CT))
+	if (attr->flags & MLX5_ATTR_FLAG_CT)
 		flow->rule[0] = mlx5_tc_ct_flow_offload(get_ct_priv(priv), flow, &parse_attr->spec,
 							attr, &parse_attr->mod_hdr_acts);
 	else
@@ -1119,7 +1171,7 @@ static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
 
 	flow_flag_clear(flow, OFFLOADED);
 
-	if (flow_flag_test(flow, CT))
+	if (attr->flags & MLX5_ATTR_FLAG_CT)
 		mlx5_tc_ct_delete_flow(get_ct_priv(flow->priv), flow, attr);
 	else if (!IS_ERR_OR_NULL(flow->rule[0]))
 		mlx5e_del_offloaded_nic_rule(priv, flow->rule[0], attr);
@@ -1154,40 +1206,27 @@ mlx5e_tc_offload_fdb_rules(struct mlx5_eswitch *esw,
 			   struct mlx5_flow_spec *spec,
 			   struct mlx5_flow_attr *attr)
 {
-	struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts;
 	struct mlx5_flow_handle *rule;
 
 	if (attr->flags & MLX5_ATTR_FLAG_SLOW_PATH)
 		return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
 
-	if (flow_flag_test(flow, CT)) {
-		mod_hdr_acts = &attr->parse_attr->mod_hdr_acts;
-
-		rule = mlx5_tc_ct_flow_offload(get_ct_priv(flow->priv),
-					       flow, spec, attr,
-					       mod_hdr_acts);
-	} else if (flow_flag_test(flow, SAMPLE)) {
-		rule = mlx5e_tc_sample_offload(get_sample_priv(flow->priv), spec, attr,
-					       mlx5e_tc_get_flow_tun_id(flow));
-	} else {
-		rule = mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
-	}
+	rule = mlx5e_tc_rule_offload(flow->priv, flow, spec, attr);
 
 	if (IS_ERR(rule))
 		return rule;
 
 	if (attr->esw_attr->split_count) {
 		flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, spec, attr);
-		if (IS_ERR(flow->rule[1])) {
-			if (flow_flag_test(flow, CT))
-				mlx5_tc_ct_delete_flow(get_ct_priv(flow->priv), flow, attr);
-			else
-				mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
-			return flow->rule[1];
-		}
+		if (IS_ERR(flow->rule[1]))
+			goto err_rule1;
 	}
 
 	return rule;
+
+err_rule1:
+	mlx5e_tc_rule_unoffload(flow->priv, flow, attr);
+	return flow->rule[1];
 }
 
 void mlx5e_tc_unoffload_fdb_rules(struct mlx5_eswitch *esw,
@@ -1197,18 +1236,12 @@ void mlx5e_tc_unoffload_fdb_rules(struct mlx5_eswitch *esw,
 	flow_flag_clear(flow, OFFLOADED);
 
 	if (attr->flags & MLX5_ATTR_FLAG_SLOW_PATH)
-		goto offload_rule_0;
+		return mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
 
 	if (attr->esw_attr->split_count)
 		mlx5_eswitch_del_fwd_rule(esw, flow->rule[1], attr);
 
-	if (flow_flag_test(flow, CT))
-		mlx5_tc_ct_delete_flow(get_ct_priv(flow->priv), flow, attr);
-	else if (flow_flag_test(flow, SAMPLE))
-		mlx5e_tc_sample_unoffload(get_sample_priv(flow->priv), flow->rule[0], attr);
-	else
-offload_rule_0:
-		mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
+	mlx5e_tc_rule_unoffload(flow->priv, flow, attr);
 }
 
 struct mlx5_flow_handle *
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
index 277515916526..722702be7e91 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
@@ -96,6 +96,7 @@ enum {
 	MLX5_ATTR_FLAG_SRC_REWRITE   = BIT(3),
 	MLX5_ATTR_FLAG_SAMPLE        = BIT(4),
 	MLX5_ATTR_FLAG_ACCEPT        = BIT(5),
+	MLX5_ATTR_FLAG_CT            = BIT(6),
 };
 
 /* Returns true if any of the flags that require skipping further TC/NF processing are set. */
-- 
2.34.1