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Date:   Mon, 17 Jun 2019 19:23:30 +0000
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     Saeed Mahameed <saeedm@...lanox.com>,
        Leon Romanovsky <leonro@...lanox.com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        Jianbo Liu <jianbol@...lanox.com>,
        Roi Dayan <roid@...lanox.com>, Mark Bloch <markb@...lanox.com>
Subject: [PATCH mlx5-next 11/15] RDMA/mlx5: Add vport metadata matching for IB
 representors

From: Jianbo Liu <jianbol@...lanox.com>

If vport metadata matching is enabled in eswitch, the rule created
must be changed to match on the metadata, instead of source port.

Signed-off-by: Jianbo Liu <jianbol@...lanox.com>
Reviewed-by: Roi Dayan <roid@...lanox.com>
Reviewed-by: Mark Bloch <markb@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 drivers/infiniband/hw/mlx5/ib_rep.c | 11 +++++++
 drivers/infiniband/hw/mlx5/ib_rep.h | 16 ++++++++++
 drivers/infiniband/hw/mlx5/main.c   | 45 +++++++++++++++++++++++------
 3 files changed, 63 insertions(+), 9 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/ib_rep.c b/drivers/infiniband/hw/mlx5/ib_rep.c
index 22e651cb5534..d4ed611de35d 100644
--- a/drivers/infiniband/hw/mlx5/ib_rep.c
+++ b/drivers/infiniband/hw/mlx5/ib_rep.c
@@ -131,6 +131,17 @@ struct mlx5_eswitch_rep *mlx5_ib_vport_rep(struct mlx5_eswitch *esw, int vport)
 	return mlx5_eswitch_vport_rep(esw, vport);
 }
 
+u32 mlx5_ib_eswitch_vport_match_metadata_enabled(struct mlx5_eswitch *esw)
+{
+	return mlx5_eswitch_vport_match_metadata_enabled(esw);
+}
+
+u32 mlx5_ib_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
+						 u16 vport)
+{
+	return mlx5_eswitch_get_vport_metadata_for_match(esw, vport);
+}
+
 struct mlx5_flow_handle *create_flow_rule_vport_sq(struct mlx5_ib_dev *dev,
 						   struct mlx5_ib_sq *sq,
 						   u16 port)
diff --git a/drivers/infiniband/hw/mlx5/ib_rep.h b/drivers/infiniband/hw/mlx5/ib_rep.h
index 22adce2d6795..65a04b6b0df3 100644
--- a/drivers/infiniband/hw/mlx5/ib_rep.h
+++ b/drivers/infiniband/hw/mlx5/ib_rep.h
@@ -25,6 +25,9 @@ struct mlx5_flow_handle *create_flow_rule_vport_sq(struct mlx5_ib_dev *dev,
 						   u16 port);
 struct net_device *mlx5_ib_get_rep_netdev(struct mlx5_eswitch *esw,
 					  int vport_index);
+u32 mlx5_ib_eswitch_vport_match_metadata_enabled(struct mlx5_eswitch *esw);
+u32 mlx5_ib_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
+						 u16 vport);
 #else /* CONFIG_MLX5_ESWITCH */
 static inline u8 mlx5_ib_eswitch_mode(struct mlx5_eswitch *esw)
 {
@@ -67,6 +70,19 @@ struct net_device *mlx5_ib_get_rep_netdev(struct mlx5_eswitch *esw,
 {
 	return NULL;
 }
+
+static inline
+u32 mlx5_ib_eswitch_vport_match_metadata_enabled(struct mlx5_eswitch *esw)
+{
+	return 0;
+};
+
+static inline
+u32 mlx5_ib_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
+						 u16 vport)
+{
+	return 0;
+};
 #endif
 
 static inline
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index be4c9a687df7..f97519c0c4df 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -3469,6 +3469,37 @@ static int flow_counters_set_data(struct ib_counters *ibcounters,
 	return ret;
 }
 
+static void mlx5_ib_set_rule_source_port(struct mlx5_ib_dev *dev,
+					 struct mlx5_flow_spec *spec,
+					 struct mlx5_eswitch_rep *rep)
+{
+	struct mlx5_eswitch *esw = dev->mdev->priv.eswitch;
+	void *misc;
+
+	if (mlx5_ib_eswitch_vport_match_metadata_enabled(esw)) {
+		misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
+				    misc_parameters_2);
+
+		MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
+			 mlx5_ib_eswitch_get_vport_metadata_for_match(esw,
+								      rep->vport));
+		misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
+				    misc_parameters_2);
+
+		MLX5_SET_TO_ONES(fte_match_set_misc2, misc, metadata_reg_c_0);
+	} else {
+		misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
+				    misc_parameters);
+
+		MLX5_SET(fte_match_set_misc, misc, source_port, rep->vport);
+
+		misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
+				    misc_parameters);
+
+		MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
+	}
+}
+
 static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
 						      struct mlx5_ib_flow_prio *ft_prio,
 						      const struct ib_flow_attr *flow_attr,
@@ -3523,19 +3554,15 @@ static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
 		set_underlay_qp(dev, spec, underlay_qpn);
 
 	if (dev->is_rep) {
-		void *misc;
+		struct mlx5_eswitch_rep *rep;
 
-		if (!dev->port[flow_attr->port - 1].rep) {
+		rep = dev->port[flow_attr->port - 1].rep;
+		if (!rep) {
 			err = -EINVAL;
 			goto free;
 		}
-		misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
-				    misc_parameters);
-		MLX5_SET(fte_match_set_misc, misc, source_port,
-			 dev->port[flow_attr->port - 1].rep->vport);
-		misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
-				    misc_parameters);
-		MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
+
+		mlx5_ib_set_rule_source_port(dev, spec, rep);
 	}
 
 	spec->match_criteria_enable = get_match_criteria_enable(spec->match_criteria);
-- 
2.21.0

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