[for-next 07/11] net/mlx5: E-Switch, Create generic header struct to be used by representors

[Saeed Mahameed <saeedm@mellanox.com>]

From: Mark Bloch <markb@mellanox.com>

Now that we don't store type dependent data in struct mlx5_eswitch_rep
we can create a generic interface, and representor type.

struct mlx5_eswitch_rep will store an array of interfaces, each
interface is used by a different representor type.

Once we moved to a more generic interface, rdma driver representors can
be added and utilize the same mechanism as the Ethernet driver
representors use.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_rep.c   | 29 ++++-----
 drivers/net/ethernet/mellanox/mlx5/core/en_rep.h   |  2 +-
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c    |  9 +--
 drivers/net/ethernet/mellanox/mlx5/core/eswitch.h  | 22 +++++--
 .../ethernet/mellanox/mlx5/core/eswitch_offloads.c | 72 ++++++++++++++++------
 5 files changed, 90 insertions(+), 44 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 3c74f0599ad3..5b2b673c0b13 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -1086,7 +1086,7 @@ mlx5e_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
 
 	rpriv->netdev = netdev;
 	rpriv->rep = rep;
-	rep->priv = rpriv;
+	rep->rep_if[REP_ETH].priv = rpriv;
 	INIT_LIST_HEAD(&rpriv->vport_sqs_list);
 
 	err = mlx5e_attach_netdev(netdev_priv(netdev));
@@ -1103,7 +1103,7 @@ mlx5e_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
 		goto err_detach_netdev;
 	}
 
-	uplink_rpriv = mlx5_eswitch_get_uplink_priv(dev->priv.eswitch);
+	uplink_rpriv = mlx5_eswitch_get_uplink_priv(dev->priv.eswitch, REP_ETH);
 	upriv = netdev_priv(uplink_rpriv->netdev);
 	err = tc_setup_cb_egdev_register(netdev, mlx5e_setup_tc_block_cb,
 					 upriv);
@@ -1146,7 +1146,8 @@ mlx5e_vport_rep_unload(struct mlx5_eswitch_rep *rep)
 	struct mlx5e_priv *upriv;
 
 	unregister_netdev(netdev);
-	uplink_rpriv = mlx5_eswitch_get_uplink_priv(priv->mdev->priv.eswitch);
+	uplink_rpriv = mlx5_eswitch_get_uplink_priv(priv->mdev->priv.eswitch,
+						    REP_ETH);
 	upriv = netdev_priv(uplink_rpriv->netdev);
 	tc_setup_cb_egdev_unregister(netdev, mlx5e_setup_tc_block_cb,
 				     upriv);
@@ -1164,11 +1165,11 @@ static void mlx5e_rep_register_vf_vports(struct mlx5e_priv *priv)
 	int vport;
 
 	for (vport = 1; vport < total_vfs; vport++) {
-		struct mlx5_eswitch_rep rep = {};
+		struct mlx5_eswitch_rep_if rep_if = {};
 
-		rep.load = mlx5e_vport_rep_load;
-		rep.unload = mlx5e_vport_rep_unload;
-		mlx5_eswitch_register_vport_rep(esw, vport, &rep);
+		rep_if.load = mlx5e_vport_rep_load;
+		rep_if.unload = mlx5e_vport_rep_unload;
+		mlx5_eswitch_register_vport_rep(esw, vport, &rep_if, REP_ETH);
 	}
 }
 
@@ -1180,24 +1181,24 @@ static void mlx5e_rep_unregister_vf_vports(struct mlx5e_priv *priv)
 	int vport;
 
 	for (vport = 1; vport < total_vfs; vport++)
-		mlx5_eswitch_unregister_vport_rep(esw, vport);
+		mlx5_eswitch_unregister_vport_rep(esw, vport, REP_ETH);
 }
 
 void mlx5e_register_vport_reps(struct mlx5e_priv *priv)
 {
 	struct mlx5_core_dev *mdev = priv->mdev;
 	struct mlx5_eswitch *esw   = mdev->priv.eswitch;
+	struct mlx5_eswitch_rep_if rep_if;
 	struct mlx5e_rep_priv *rpriv;
-	struct mlx5_eswitch_rep rep;
 
 	rpriv = priv->ppriv;
 	rpriv->netdev = priv->netdev;
 
-	rep.load = mlx5e_nic_rep_load;
-	rep.unload = mlx5e_nic_rep_unload;
-	rep.priv = rpriv;
+	rep_if.load = mlx5e_nic_rep_load;
+	rep_if.unload = mlx5e_nic_rep_unload;
+	rep_if.priv = rpriv;
 	INIT_LIST_HEAD(&rpriv->vport_sqs_list);
-	mlx5_eswitch_register_vport_rep(esw, 0, &rep); /* UPLINK PF vport*/
+	mlx5_eswitch_register_vport_rep(esw, 0, &rep_if, REP_ETH); /* UPLINK PF vport*/
 
 	mlx5e_rep_register_vf_vports(priv); /* VFs vports */
 }
@@ -1208,7 +1209,7 @@ void mlx5e_unregister_vport_reps(struct mlx5e_priv *priv)
 	struct mlx5_eswitch *esw   = mdev->priv.eswitch;
 
 	mlx5e_rep_unregister_vf_vports(priv); /* VFs vports */
-	mlx5_eswitch_unregister_vport_rep(esw, 0); /* UPLINK PF*/
+	mlx5_eswitch_unregister_vport_rep(esw, 0, REP_ETH); /* UPLINK PF*/
 }
 
 void *mlx5e_alloc_nic_rep_priv(struct mlx5_core_dev *mdev)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h
index 8db68369367e..e4473a9ebd50 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h
@@ -64,7 +64,7 @@ struct mlx5e_rep_priv {
 static inline
 struct mlx5e_rep_priv *mlx5e_rep_to_rep_priv(struct mlx5_eswitch_rep *rep)
 {
-	return (struct mlx5e_rep_priv *)rep->priv;
+	return (struct mlx5e_rep_priv *)rep->rep_if[REP_ETH].priv;
 }
 
 struct mlx5e_neigh {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index f462496cce7a..259e91e2d09a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -617,7 +617,7 @@ static int parse_tunnel_attr(struct mlx5e_priv *priv,
 						  FLOW_DISSECTOR_KEY_ENC_PORTS,
 						  f->mask);
 		struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
-		struct mlx5e_rep_priv *uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw);
+		struct mlx5e_rep_priv *uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
 		struct net_device *up_dev = uplink_rpriv->netdev;
 		struct mlx5e_priv *up_priv = netdev_priv(up_dev);
 
@@ -1522,7 +1522,7 @@ static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
 #else
 	return -EOPNOTSUPP;
 #endif
-	uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw);
+	uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
 	/* if the egress device isn't on the same HW e-switch, we use the uplink */
 	if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev))
 		*out_dev = uplink_rpriv->netdev;
@@ -1561,7 +1561,7 @@ static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
 
 	*out_ttl = ip6_dst_hoplimit(dst);
 
-	uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw);
+	uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
 	/* if the egress device isn't on the same HW e-switch, we use the uplink */
 	if (!switchdev_port_same_parent_id(priv->netdev, dst->dev))
 		*out_dev = uplink_rpriv->netdev;
@@ -1864,7 +1864,8 @@ static int mlx5e_attach_encap(struct mlx5e_priv *priv,
 			      struct mlx5e_tc_flow *flow)
 {
 	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
-	struct mlx5e_rep_priv *uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw);
+	struct mlx5e_rep_priv *uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw,
+									   REP_ETH);
 	struct net_device *up_dev = uplink_rpriv->netdev;
 	unsigned short family = ip_tunnel_info_af(tun_info);
 	struct mlx5e_priv *up_priv = netdev_priv(up_dev);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
index 3a21ea4e4d24..91175965df7f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
@@ -45,6 +45,11 @@ enum {
 	SRIOV_OFFLOADS
 };
 
+enum {
+	REP_ETH,
+	NUM_REP_TYPES,
+};
+
 #ifdef CONFIG_MLX5_ESWITCH
 
 #define MLX5_MAX_UC_PER_VPORT(dev) \
@@ -138,16 +143,21 @@ struct mlx5_esw_sq {
 	struct list_head	 list;
 };
 
-struct mlx5_eswitch_rep {
+struct mlx5_eswitch_rep;
+struct mlx5_eswitch_rep_if {
 	int		       (*load)(struct mlx5_core_dev *dev,
 				       struct mlx5_eswitch_rep *rep);
 	void		       (*unload)(struct mlx5_eswitch_rep *rep);
 	void			*priv;
+	bool		       valid;
+};
+
+struct mlx5_eswitch_rep {
+	struct mlx5_eswitch_rep_if rep_if[NUM_REP_TYPES];
 	u16		       vport;
 	u8		       hw_id[ETH_ALEN];
 	u16		       vlan;
 	u32		       vlan_refcount;
-	bool		       valid;
 };
 
 struct mlx5_esw_offload {
@@ -268,10 +278,12 @@ int mlx5_devlink_eswitch_encap_mode_set(struct devlink *devlink, u8 encap);
 int mlx5_devlink_eswitch_encap_mode_get(struct devlink *devlink, u8 *encap);
 void mlx5_eswitch_register_vport_rep(struct mlx5_eswitch *esw,
 				     int vport_index,
-				     struct mlx5_eswitch_rep *rep);
+				     struct mlx5_eswitch_rep_if *rep_if,
+				     u8 rep_type);
 void mlx5_eswitch_unregister_vport_rep(struct mlx5_eswitch *esw,
-				       int vport_index);
-void *mlx5_eswitch_get_uplink_priv(struct mlx5_eswitch *esw);
+				       int vport_index,
+				       u8 rep_type);
+void *mlx5_eswitch_get_uplink_priv(struct mlx5_eswitch *esw, u8 rep_type);
 
 int mlx5_eswitch_add_vlan_action(struct mlx5_eswitch *esw,
 				 struct mlx5_esw_flow_attr *attr);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index 6560e5943e1e..ee617f7d3e84 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -130,7 +130,7 @@ static int esw_set_global_vlan_pop(struct mlx5_eswitch *esw, u8 val)
 	esw_debug(esw->dev, "%s applying global %s policy\n", __func__, val ? "pop" : "none");
 	for (vf_vport = 1; vf_vport < esw->enabled_vports; vf_vport++) {
 		rep = &esw->offloads.vport_reps[vf_vport];
-		if (!rep->valid)
+		if (!rep->rep_if[REP_ETH].valid)
 			continue;
 
 		err = __mlx5_eswitch_set_vport_vlan(esw, rep->vport, 0, 0, val);
@@ -720,21 +720,31 @@ int esw_offloads_init_reps(struct mlx5_eswitch *esw)
 	return 0;
 }
 
-static void esw_offloads_unload_reps(struct mlx5_eswitch *esw, int nvports)
+static void esw_offloads_unload_reps_type(struct mlx5_eswitch *esw, int nvports,
+					  u8 rep_type)
 {
 	struct mlx5_eswitch_rep *rep;
 	int vport;
 
 	for (vport = nvports - 1; vport >= 0; vport--) {
 		rep = &esw->offloads.vport_reps[vport];
-		if (!rep->valid)
+		if (!rep->rep_if[rep_type].valid)
 			continue;
 
-		rep->unload(rep);
+		rep->rep_if[rep_type].unload(rep);
 	}
 }
 
-static int esw_offloads_load_reps(struct mlx5_eswitch *esw, int nvports)
+static void esw_offloads_unload_reps(struct mlx5_eswitch *esw, int nvports)
+{
+	u8 rep_type = NUM_REP_TYPES;
+
+	while (rep_type-- > 0)
+		esw_offloads_unload_reps_type(esw, nvports, rep_type);
+}
+
+static int esw_offloads_load_reps_type(struct mlx5_eswitch *esw, int nvports,
+				       u8 rep_type)
 {
 	struct mlx5_eswitch_rep *rep;
 	int vport;
@@ -742,10 +752,10 @@ static int esw_offloads_load_reps(struct mlx5_eswitch *esw, int nvports)
 
 	for (vport = 0; vport < nvports; vport++) {
 		rep = &esw->offloads.vport_reps[vport];
-		if (!rep->valid)
+		if (!rep->rep_if[rep_type].valid)
 			continue;
 
-		err = rep->load(esw->dev, rep);
+		err = rep->rep_if[rep_type].load(esw->dev, rep);
 		if (err)
 			goto err_reps;
 	}
@@ -753,7 +763,28 @@ static int esw_offloads_load_reps(struct mlx5_eswitch *esw, int nvports)
 	return 0;
 
 err_reps:
-	esw_offloads_unload_reps(esw, vport);
+	esw_offloads_unload_reps_type(esw, vport, rep_type);
+	return err;
+}
+
+static int esw_offloads_load_reps(struct mlx5_eswitch *esw, int nvports)
+{
+	u8 rep_type = 0;
+	int err;
+
+	while (rep_type < NUM_REP_TYPES) {
+		err = esw_offloads_load_reps_type(esw, nvports,
+						  rep_type);
+		if (err)
+			goto err_reps;
+		rep_type++;
+	}
+
+	return err;
+
+err_reps:
+	while (rep_type-- > 0)
+		esw_offloads_unload_reps_type(esw, nvports, rep_type);
 	return err;
 }
 
@@ -1122,22 +1153,23 @@ int mlx5_devlink_eswitch_encap_mode_get(struct devlink *devlink, u8 *encap)
 
 void mlx5_eswitch_register_vport_rep(struct mlx5_eswitch *esw,
 				     int vport_index,
-				     struct mlx5_eswitch_rep *__rep)
+				     struct mlx5_eswitch_rep_if *__rep_if,
+				     u8 rep_type)
 {
 	struct mlx5_esw_offload *offloads = &esw->offloads;
-	struct mlx5_eswitch_rep *rep;
+	struct mlx5_eswitch_rep_if *rep_if;
 
-	rep = &offloads->vport_reps[vport_index];
+	rep_if = &offloads->vport_reps[vport_index].rep_if[rep_type];
 
-	rep->load   = __rep->load;
-	rep->unload = __rep->unload;
-	rep->priv = __rep->priv;
+	rep_if->load   = __rep_if->load;
+	rep_if->unload = __rep_if->unload;
+	rep_if->priv = __rep_if->priv;
 
-	rep->valid = true;
+	rep_if->valid = true;
 }
 
 void mlx5_eswitch_unregister_vport_rep(struct mlx5_eswitch *esw,
-				       int vport_index)
+				       int vport_index, u8 rep_type)
 {
 	struct mlx5_esw_offload *offloads = &esw->offloads;
 	struct mlx5_eswitch_rep *rep;
@@ -1145,17 +1177,17 @@ void mlx5_eswitch_unregister_vport_rep(struct mlx5_eswitch *esw,
 	rep = &offloads->vport_reps[vport_index];
 
 	if (esw->mode == SRIOV_OFFLOADS && esw->vports[vport_index].enabled)
-		rep->unload(rep);
+		rep->rep_if[rep_type].unload(rep);
 
-	rep->valid = false;
+	rep->rep_if[rep_type].valid = false;
 }
 
-void *mlx5_eswitch_get_uplink_priv(struct mlx5_eswitch *esw)
+void *mlx5_eswitch_get_uplink_priv(struct mlx5_eswitch *esw, u8 rep_type)
 {
 #define UPLINK_REP_INDEX 0
 	struct mlx5_esw_offload *offloads = &esw->offloads;
 	struct mlx5_eswitch_rep *rep;
 
 	rep = &offloads->vport_reps[UPLINK_REP_INDEX];
-	return rep->priv;
+	return rep->rep_if[rep_type].priv;
 }
-- 
2.14.2