netdev - [PATCH net-next 09/13] mlxsw: spectrum_matchall: Push per-port rule add/del into separate functions

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Date:   Mon, 27 Apr 2020 18:13:06 +0300
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 09/13] mlxsw: spectrum_matchall: Push per-port rule add/del into separate functions

From: Jiri Pirko <jiri@...lanox.com>

As the replace/destroy is going to be used later on per-block, push
the per-port rule addition/deletion into separate functions.

Signed-off-by: Jiri Pirko <jiri@...lanox.com>
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
---
 .../mellanox/mlxsw/spectrum_matchall.c        | 48 ++++++++++++++-----
 1 file changed, 35 insertions(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_matchall.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_matchall.c
index c05e28971d06..41301027a47c 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_matchall.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_matchall.c
@@ -123,6 +123,37 @@ mlxsw_sp_mall_port_sample_del(struct mlxsw_sp_port *mlxsw_sp_port)
 	RCU_INIT_POINTER(mlxsw_sp_port->sample->psample_group, NULL);
 }
 
+static int
+mlxsw_sp_mall_port_rule_add(struct mlxsw_sp_port *mlxsw_sp_port,
+			    struct mlxsw_sp_mall_entry *mall_entry)
+{
+	switch (mall_entry->type) {
+	case MLXSW_SP_MALL_ACTION_TYPE_MIRROR:
+		return mlxsw_sp_mall_port_mirror_add(mlxsw_sp_port, mall_entry);
+	case MLXSW_SP_MALL_ACTION_TYPE_SAMPLE:
+		return mlxsw_sp_mall_port_sample_add(mlxsw_sp_port, mall_entry);
+	default:
+		WARN_ON(1);
+		return -EINVAL;
+	}
+}
+
+static void
+mlxsw_sp_mall_port_rule_del(struct mlxsw_sp_port *mlxsw_sp_port,
+			    struct mlxsw_sp_mall_entry *mall_entry)
+{
+	switch (mall_entry->type) {
+	case MLXSW_SP_MALL_ACTION_TYPE_MIRROR:
+		mlxsw_sp_mall_port_mirror_del(mlxsw_sp_port, mall_entry);
+		break;
+	case MLXSW_SP_MALL_ACTION_TYPE_SAMPLE:
+		mlxsw_sp_mall_port_sample_del(mlxsw_sp_port);
+		break;
+	default:
+		WARN_ON(1);
+	}
+}
+
 int mlxsw_sp_mall_replace(struct mlxsw_sp_port *mlxsw_sp_port,
 			  struct tc_cls_matchall_offload *f, bool ingress)
 {
@@ -147,7 +178,6 @@ int mlxsw_sp_mall_replace(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (act->id == FLOW_ACTION_MIRRED && protocol == htons(ETH_P_ALL)) {
 		mall_entry->type = MLXSW_SP_MALL_ACTION_TYPE_MIRROR;
 		mall_entry->mirror.to_dev = act->dev;
-		err = mlxsw_sp_mall_port_mirror_add(mlxsw_sp_port, mall_entry);
 	} else if (act->id == FLOW_ACTION_SAMPLE &&
 		   protocol == htons(ETH_P_ALL)) {
 		if (act->sample.rate > MLXSW_REG_MPSC_RATE_MAX) {
@@ -160,11 +190,12 @@ int mlxsw_sp_mall_replace(struct mlxsw_sp_port *mlxsw_sp_port,
 		mall_entry->sample.truncate = act->sample.truncate;
 		mall_entry->sample.trunc_size = act->sample.trunc_size;
 		mall_entry->sample.rate = act->sample.rate;
-		err = mlxsw_sp_mall_port_sample_add(mlxsw_sp_port, mall_entry);
 	} else {
 		err = -EOPNOTSUPP;
+		goto errout;
 	}
 
+	err = mlxsw_sp_mall_port_rule_add(mlxsw_sp_port, mall_entry);
 	if (err)
 		goto errout;
 
@@ -186,18 +217,9 @@ void mlxsw_sp_mall_destroy(struct mlxsw_sp_port *mlxsw_sp_port,
 		netdev_dbg(mlxsw_sp_port->dev, "tc entry not found on port\n");
 		return;
 	}
-	list_del(&mall_entry->list);
 
-	switch (mall_entry->type) {
-	case MLXSW_SP_MALL_ACTION_TYPE_MIRROR:
-		mlxsw_sp_mall_port_mirror_del(mlxsw_sp_port, mall_entry);
-		break;
-	case MLXSW_SP_MALL_ACTION_TYPE_SAMPLE:
-		mlxsw_sp_mall_port_sample_del(mlxsw_sp_port);
-		break;
-	default:
-		WARN_ON(1);
-	}
+	mlxsw_sp_mall_port_rule_del(mlxsw_sp_port, mall_entry);
 
+	list_del(&mall_entry->list);
 	kfree(mall_entry);
 }
-- 
2.24.1