netdev - [PATCH net-next 3/4] mlxsw: spectrum

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Date:   Tue, 24 Jul 2018 17:13:13 +0300
From:   Ido Schimmel <idosch@...lanox.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, nird@...lanox.com, jiri@...lanox.com,
        mlxsw@...lanox.com, Ido Schimmel <idosch@...lanox.com>
Subject: [PATCH net-next 3/4] mlxsw: spectrum_acl: Add extack messages

From: Nir Dotan <nird@...lanox.com>

Return extack messages for failures in action set creation.
Messages provide reasons for not being able to implement
the action in HW.

Signed-off-by: Nir Dotan <nird@...lanox.com>
Reviewed-by: Jiri Pirko <jiri@...lanox.com>
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
---
 .../net/ethernet/mellanox/mlxsw/spectrum_acl.c    | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
index c97d40ccf7ad..6a38763ad261 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
@@ -546,11 +546,15 @@ int mlxsw_sp_acl_rulei_act_fwd(struct mlxsw_sp *mlxsw_sp,
 	bool in_port;
 
 	if (out_dev) {
-		if (!mlxsw_sp_port_dev_check(out_dev))
+		if (!mlxsw_sp_port_dev_check(out_dev)) {
+			NL_SET_ERR_MSG_MOD(extack, "Invalid output device");
 			return -EINVAL;
+		}
 		mlxsw_sp_port = netdev_priv(out_dev);
-		if (mlxsw_sp_port->mlxsw_sp != mlxsw_sp)
+		if (mlxsw_sp_port->mlxsw_sp != mlxsw_sp) {
+			NL_SET_ERR_MSG_MOD(extack, "Invalid output device");
 			return -EINVAL;
+		}
 		local_port = mlxsw_sp_port->local_port;
 		in_port = false;
 	} else {
@@ -573,9 +577,10 @@ int mlxsw_sp_acl_rulei_act_mirror(struct mlxsw_sp *mlxsw_sp,
 	struct mlxsw_sp_acl_block_binding *binding;
 	struct mlxsw_sp_port *in_port;
 
-	if (!list_is_singular(&block->binding_list))
+	if (!list_is_singular(&block->binding_list)) {
+		NL_SET_ERR_MSG_MOD(extack, "Only a single mirror source is allowed");
 		return -EOPNOTSUPP;
-
+	}
 	binding = list_first_entry(&block->binding_list,
 				   struct mlxsw_sp_acl_block_binding, list);
 	in_port = binding->mlxsw_sp_port;
@@ -603,6 +608,7 @@ int mlxsw_sp_acl_rulei_act_vlan(struct mlxsw_sp *mlxsw_sp,
 			ethertype = 1;
 			break;
 		default:
+			NL_SET_ERR_MSG_MOD(extack, "Unsupported VLAN protocol");
 			dev_err(mlxsw_sp->bus_info->dev, "Unsupported VLAN protocol %#04x\n",
 				proto);
 			return -EINVAL;
@@ -612,6 +618,7 @@ int mlxsw_sp_acl_rulei_act_vlan(struct mlxsw_sp *mlxsw_sp,
 							  vid, prio, ethertype,
 							  extack);
 	} else {
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported VLAN action");
 		dev_err(mlxsw_sp->bus_info->dev, "Unsupported VLAN action\n");
 		return -EINVAL;
 	}
-- 
2.17.1