netdev - [net-next 01/13] net/mlx5: Support partial TTC rules

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Date:   Mon, 18 Oct 2021 20:20:35 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Maor Gottlieb <maorg@...dia.com>,
        Mark Bloch <mbloch@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: [net-next 01/13] net/mlx5: Support partial TTC rules

From: Maor Gottlieb <maorg@...dia.com>

Add bitmasks to ttc_params to indicate if rule is valid or not.
It will allow to create TTC table with support only in part of the
traffic types.
In later patches which introduce the steering based LAG port selection,
TTC will be created with only part of the rules according to the hash
type.

Signed-off-by: Maor Gottlieb <maorg@...dia.com>
Reviewed-by: Mark Bloch <mbloch@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c | 4 ++++
 drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.h | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c
index 749d17c0057d..b63dec24747a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c
@@ -247,6 +247,8 @@ static int mlx5_generate_ttc_table_rules(struct mlx5_core_dev *dev,
 	for (tt = 0; tt < MLX5_NUM_TT; tt++) {
 		struct mlx5_ttc_rule *rule = &rules[tt];
 
+		if (test_bit(tt, params->ignore_dests))
+			continue;
 		rule->rule = mlx5_generate_ttc_rule(dev, ft, &params->dests[tt],
 						    ttc_rules[tt].etype,
 						    ttc_rules[tt].proto);
@@ -266,6 +268,8 @@ static int mlx5_generate_ttc_table_rules(struct mlx5_core_dev *dev,
 		if (!mlx5_tunnel_proto_supported_rx(dev,
 						    ttc_tunnel_rules[tt].proto))
 			continue;
+		if (test_bit(tt, params->ignore_tunnel_dests))
+			continue;
 		trules[tt] = mlx5_generate_ttc_rule(dev, ft,
 						    &params->tunnel_dests[tt],
 						    ttc_tunnel_rules[tt].etype,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.h b/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.h
index ce95be8f8382..85fef0cd1c07 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.h
@@ -43,7 +43,9 @@ struct ttc_params {
 	struct mlx5_flow_namespace *ns;
 	struct mlx5_flow_table_attr ft_attr;
 	struct mlx5_flow_destination dests[MLX5_NUM_TT];
+	DECLARE_BITMAP(ignore_dests, MLX5_NUM_TT);
 	bool   inner_ttc;
+	DECLARE_BITMAP(ignore_tunnel_dests, MLX5_NUM_TUNNEL_TT);
 	struct mlx5_flow_destination tunnel_dests[MLX5_NUM_TUNNEL_TT];
 };
 
-- 
2.31.1