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Message-Id: <20191031094221.17526-11-idosch@idosch.org>
Date: Thu, 31 Oct 2019 11:42:15 +0200
From: Ido Schimmel <idosch@...sch.org>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, jiri@...lanox.com, mlxsw@...lanox.com,
Ido Schimmel <idosch@...lanox.com>
Subject: [PATCH net-next 10/16] mlxsw: spectrum: Push getting offsets of split ports into a helper
From: Jiri Pirko <jiri@...lanox.com>
Get local port offsets of split port in a separate helper function and
use it in both split and unsplit function.
Signed-off-by: Jiri Pirko <jiri@...lanox.com>
Reviewed-by: Shalom Toledo <shalomt@...lanox.com>
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
---
.../net/ethernet/mellanox/mlxsw/spectrum.c | 58 +++++++++++--------
1 file changed, 35 insertions(+), 23 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 938803cd29ca..39ea408deec1 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -4154,26 +4154,38 @@ static void mlxsw_sp_port_unsplit_create(struct mlxsw_sp *mlxsw_sp,
}
}
+static int mlxsw_sp_local_ports_offset(struct mlxsw_core *mlxsw_core,
+ unsigned int count,
+ unsigned int max_width)
+{
+ enum mlxsw_res_id local_ports_in_x_res_id;
+ int split_width = max_width / count;
+
+ if (split_width == 1)
+ local_ports_in_x_res_id = MLXSW_RES_ID_LOCAL_PORTS_IN_1X;
+ else if (split_width == 2)
+ local_ports_in_x_res_id = MLXSW_RES_ID_LOCAL_PORTS_IN_2X;
+ else
+ return -EINVAL;
+
+ if (!mlxsw_core_res_valid(mlxsw_core, local_ports_in_x_res_id))
+ return -EINVAL;
+ return mlxsw_core_res_get(mlxsw_core, local_ports_in_x_res_id);
+}
+
static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
unsigned int count,
struct netlink_ext_ack *extack)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
- u8 local_ports_in_1x, local_ports_in_2x, offset;
struct mlxsw_sp_port_mapping port_mapping;
struct mlxsw_sp_port *mlxsw_sp_port;
int max_width;
u8 base_port;
+ int offset;
int i;
int err;
- if (!MLXSW_CORE_RES_VALID(mlxsw_core, LOCAL_PORTS_IN_1X) ||
- !MLXSW_CORE_RES_VALID(mlxsw_core, LOCAL_PORTS_IN_2X))
- return -EIO;
-
- local_ports_in_1x = MLXSW_CORE_RES_GET(mlxsw_core, LOCAL_PORTS_IN_1X);
- local_ports_in_2x = MLXSW_CORE_RES_GET(mlxsw_core, LOCAL_PORTS_IN_2X);
-
mlxsw_sp_port = mlxsw_sp->ports[local_port];
if (!mlxsw_sp_port) {
dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
@@ -4210,17 +4222,22 @@ static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
return -EINVAL;
}
+ offset = mlxsw_sp_local_ports_offset(mlxsw_core, count, max_width);
+ if (offset < 0) {
+ netdev_err(mlxsw_sp_port->dev, "Cannot obtain local port offset\n");
+ NL_SET_ERR_MSG_MOD(extack, "Cannot obtain local port offset");
+ return -EINVAL;
+ }
+
/* Make sure we have enough slave (even) ports for the split. */
if (count == 2) {
- offset = local_ports_in_2x;
base_port = local_port;
- if (mlxsw_sp->ports[base_port + local_ports_in_2x]) {
+ if (mlxsw_sp->ports[base_port + offset]) {
netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
NL_SET_ERR_MSG_MOD(extack, "Invalid split configuration");
return -EINVAL;
}
} else {
- offset = local_ports_in_1x;
base_port = mlxsw_sp_cluster_base_port_get(local_port,
max_width);
if (mlxsw_sp->ports[base_port + 1] ||
@@ -4255,20 +4272,13 @@ static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port,
struct netlink_ext_ack *extack)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
- u8 local_ports_in_1x, local_ports_in_2x, offset;
struct mlxsw_sp_port *mlxsw_sp_port;
unsigned int count;
int max_width;
u8 base_port;
+ int offset;
int i;
- if (!MLXSW_CORE_RES_VALID(mlxsw_core, LOCAL_PORTS_IN_1X) ||
- !MLXSW_CORE_RES_VALID(mlxsw_core, LOCAL_PORTS_IN_2X))
- return -EIO;
-
- local_ports_in_1x = MLXSW_CORE_RES_GET(mlxsw_core, LOCAL_PORTS_IN_1X);
- local_ports_in_2x = MLXSW_CORE_RES_GET(mlxsw_core, LOCAL_PORTS_IN_2X);
-
mlxsw_sp_port = mlxsw_sp->ports[local_port];
if (!mlxsw_sp_port) {
dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
@@ -4293,10 +4303,12 @@ static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port,
count = max_width / mlxsw_sp_port->mapping.width;
- if (count == 2)
- offset = local_ports_in_2x;
- else
- offset = local_ports_in_1x;
+ offset = mlxsw_sp_local_ports_offset(mlxsw_core, count, max_width);
+ if (WARN_ON(offset < 0)) {
+ netdev_err(mlxsw_sp_port->dev, "Cannot obtain local port offset\n");
+ NL_SET_ERR_MSG_MOD(extack, "Cannot obtain local port offset");
+ return -EINVAL;
+ }
base_port = mlxsw_sp_cluster_base_port_get(local_port, max_width);
--
2.21.0
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