From: Ido Schimmel <idosch@mellanox.com>
Date: Sat, 11 Jul 2020 00:55:06 +0300
Subject: mlxsw: spectrum_span: Move SPAN operations out of global file
Patch-mainline: v5.9-rc1
Git-commit: 4bafb85ae24418cfa42ad3cb9f67031b1813fea8
References: bsc#1176774

The per-ASIC SPAN operations are relevant to the SPAN module and
therefore should be implemented there and not in the main driver file.
Move them.

These operations will be extended later on.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c      |   50 --------------------
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h      |    1 
 drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c |   47 ++++++++++++++++++
 drivers/net/ethernet/mellanox/mlxsw/spectrum_span.h |    8 +++
 4 files changed, 55 insertions(+), 51 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -175,10 +175,6 @@ struct mlxsw_sp_mlxfw_dev {
 	struct mlxsw_sp *mlxsw_sp;
 };
 
-struct mlxsw_sp_span_ops {
-	u32 (*buffsize_get)(int mtu, u32 speed);
-};
-
 static int mlxsw_sp_component_query(struct mlxfw_dev *mlxfw_dev,
 				    u16 component_index, u32 *p_max_size,
 				    u8 *p_align_bits, u16 *p_max_write_size)
@@ -2812,52 +2808,6 @@ static const struct mlxsw_sp_ptp_ops mlx
 	.get_stats	= mlxsw_sp2_get_stats,
 };
 
-static u32 mlxsw_sp1_span_buffsize_get(int mtu, u32 speed)
-{
-	return mtu * 5 / 2;
-}
-
-static const struct mlxsw_sp_span_ops mlxsw_sp1_span_ops = {
-	.buffsize_get = mlxsw_sp1_span_buffsize_get,
-};
-
-#define MLXSW_SP2_SPAN_EG_MIRROR_BUFFER_FACTOR 38
-#define MLXSW_SP3_SPAN_EG_MIRROR_BUFFER_FACTOR 50
-
-static u32 __mlxsw_sp_span_buffsize_get(int mtu, u32 speed, u32 buffer_factor)
-{
-	return 3 * mtu + buffer_factor * speed / 1000;
-}
-
-static u32 mlxsw_sp2_span_buffsize_get(int mtu, u32 speed)
-{
-	int factor = MLXSW_SP2_SPAN_EG_MIRROR_BUFFER_FACTOR;
-
-	return __mlxsw_sp_span_buffsize_get(mtu, speed, factor);
-}
-
-static const struct mlxsw_sp_span_ops mlxsw_sp2_span_ops = {
-	.buffsize_get = mlxsw_sp2_span_buffsize_get,
-};
-
-static u32 mlxsw_sp3_span_buffsize_get(int mtu, u32 speed)
-{
-	int factor = MLXSW_SP3_SPAN_EG_MIRROR_BUFFER_FACTOR;
-
-	return __mlxsw_sp_span_buffsize_get(mtu, speed, factor);
-}
-
-static const struct mlxsw_sp_span_ops mlxsw_sp3_span_ops = {
-	.buffsize_get = mlxsw_sp3_span_buffsize_get,
-};
-
-u32 mlxsw_sp_span_buffsize_get(struct mlxsw_sp *mlxsw_sp, int mtu, u32 speed)
-{
-	u32 buffsize = mlxsw_sp->span_ops->buffsize_get(speed, mtu);
-
-	return mlxsw_sp_bytes_cells(mlxsw_sp, buffsize) + 1;
-}
-
 static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
 				    unsigned long event, void *ptr);
 
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -539,7 +539,6 @@ int mlxsw_sp_flow_counter_alloc(struct m
 				unsigned int *p_counter_index);
 void mlxsw_sp_flow_counter_free(struct mlxsw_sp *mlxsw_sp,
 				unsigned int counter_index);
-u32 mlxsw_sp_span_buffsize_get(struct mlxsw_sp *mlxsw_sp, int mtu, u32 speed);
 bool mlxsw_sp_port_dev_check(const struct net_device *dev);
 struct mlxsw_sp *mlxsw_sp_lower_get(struct net_device *dev);
 struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find(struct net_device *dev);
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
@@ -766,6 +766,14 @@ static int mlxsw_sp_span_entry_put(struc
 	return 0;
 }
 
+static u32 mlxsw_sp_span_buffsize_get(struct mlxsw_sp *mlxsw_sp, int mtu,
+				      u32 speed)
+{
+	u32 buffsize = mlxsw_sp->span_ops->buffsize_get(speed, mtu);
+
+	return mlxsw_sp_bytes_cells(mlxsw_sp, buffsize) + 1;
+}
+
 static int
 mlxsw_sp_span_port_buffer_update(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
 {
@@ -1207,3 +1215,42 @@ void mlxsw_sp_span_agent_unbind(struct m
 
 	mlxsw_sp_span_trigger_entry_destroy(mlxsw_sp->span, trigger_entry);
 }
+
+static u32 mlxsw_sp1_span_buffsize_get(int mtu, u32 speed)
+{
+	return mtu * 5 / 2;
+}
+
+const struct mlxsw_sp_span_ops mlxsw_sp1_span_ops = {
+	.buffsize_get = mlxsw_sp1_span_buffsize_get,
+};
+
+#define MLXSW_SP2_SPAN_EG_MIRROR_BUFFER_FACTOR 38
+#define MLXSW_SP3_SPAN_EG_MIRROR_BUFFER_FACTOR 50
+
+static u32 __mlxsw_sp_span_buffsize_get(int mtu, u32 speed, u32 buffer_factor)
+{
+	return 3 * mtu + buffer_factor * speed / 1000;
+}
+
+static u32 mlxsw_sp2_span_buffsize_get(int mtu, u32 speed)
+{
+	int factor = MLXSW_SP2_SPAN_EG_MIRROR_BUFFER_FACTOR;
+
+	return __mlxsw_sp_span_buffsize_get(mtu, speed, factor);
+}
+
+const struct mlxsw_sp_span_ops mlxsw_sp2_span_ops = {
+	.buffsize_get = mlxsw_sp2_span_buffsize_get,
+};
+
+static u32 mlxsw_sp3_span_buffsize_get(int mtu, u32 speed)
+{
+	int factor = MLXSW_SP3_SPAN_EG_MIRROR_BUFFER_FACTOR;
+
+	return __mlxsw_sp_span_buffsize_get(mtu, speed, factor);
+}
+
+const struct mlxsw_sp_span_ops mlxsw_sp3_span_ops = {
+	.buffsize_get = mlxsw_sp3_span_buffsize_get,
+};
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.h
@@ -34,6 +34,10 @@ struct mlxsw_sp_span_trigger_parms {
 
 struct mlxsw_sp_span_entry_ops;
 
+struct mlxsw_sp_span_ops {
+	u32 (*buffsize_get)(int mtu, u32 speed);
+};
+
 struct mlxsw_sp_span_entry {
 	const struct net_device *to_dev;
 	const struct mlxsw_sp_span_entry_ops *ops;
@@ -82,4 +86,8 @@ mlxsw_sp_span_agent_unbind(struct mlxsw_
 			   struct mlxsw_sp_port *mlxsw_sp_port,
 			   const struct mlxsw_sp_span_trigger_parms *parms);
 
+extern const struct mlxsw_sp_span_ops mlxsw_sp1_span_ops;
+extern const struct mlxsw_sp_span_ops mlxsw_sp2_span_ops;
+extern const struct mlxsw_sp_span_ops mlxsw_sp3_span_ops;
+
 #endif