netdev - [PATCH net-next 3/9] dpaa2-switch: reorganize dpaa2_switch_cls_flower

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Message-Id: <20210729171901.3211729-4-ciorneiioana@gmail.com>
Date:   Thu, 29 Jul 2021 20:18:55 +0300
From:   Ioana Ciornei <ciorneiioana@...il.com>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     corbet@....net, netdev@...r.kernel.org, linux-doc@...r.kernel.org,
        Ioana Ciornei <ioana.ciornei@....com>
Subject: [PATCH net-next 3/9] dpaa2-switch: reorganize dpaa2_switch_cls_flower_replace

From: Ioana Ciornei <ioana.ciornei@....com>

Extract the necessary steps to offload a filter by using the ACL table
in a separate function - dpaa2_switch_cls_flower_replace_acl().
This is intended to help with the code readability when the mirroring
support is added.

Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
---
 .../freescale/dpaa2/dpaa2-switch-flower.c     | 32 +++++++++++++++----
 1 file changed, 26 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-flower.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-flower.c
index 80fe09ac9d5f..38a321be58ff 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-flower.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-flower.c
@@ -376,7 +376,8 @@ static int dpaa2_switch_tc_parse_action_acl(struct ethsw_core *ethsw,
 	return err;
 }
 
-int dpaa2_switch_cls_flower_replace(struct dpaa2_switch_filter_block *block,
+static int
+dpaa2_switch_cls_flower_replace_acl(struct dpaa2_switch_filter_block *block,
 				    struct flow_cls_offload *cls)
 {
 	struct flow_rule *rule = flow_cls_offload_flow_rule(cls);
@@ -386,11 +387,6 @@ int dpaa2_switch_cls_flower_replace(struct dpaa2_switch_filter_block *block,
 	struct flow_action_entry *act;
 	int err;
 
-	if (!flow_offload_has_one_action(&rule->action)) {
-		NL_SET_ERR_MSG(extack, "Only singular actions are supported");
-		return -EOPNOTSUPP;
-	}
-
 	if (dpaa2_switch_acl_tbl_is_full(block)) {
 		NL_SET_ERR_MSG(extack, "Maximum filter capacity reached");
 		return -ENOMEM;
@@ -425,6 +421,30 @@ int dpaa2_switch_cls_flower_replace(struct dpaa2_switch_filter_block *block,
 	return err;
 }
 
+int dpaa2_switch_cls_flower_replace(struct dpaa2_switch_filter_block *block,
+				    struct flow_cls_offload *cls)
+{
+	struct flow_rule *rule = flow_cls_offload_flow_rule(cls);
+	struct netlink_ext_ack *extack = cls->common.extack;
+	struct flow_action_entry *act;
+
+	if (!flow_offload_has_one_action(&rule->action)) {
+		NL_SET_ERR_MSG(extack, "Only singular actions are supported");
+		return -EOPNOTSUPP;
+	}
+
+	act = &rule->action.entries[0];
+	switch (act->id) {
+	case FLOW_ACTION_REDIRECT:
+	case FLOW_ACTION_TRAP:
+	case FLOW_ACTION_DROP:
+		return dpaa2_switch_cls_flower_replace_acl(block, cls);
+	default:
+		NL_SET_ERR_MSG_MOD(extack, "Action not supported");
+		return -EOPNOTSUPP;
+	}
+}
+
 int dpaa2_switch_cls_flower_destroy(struct dpaa2_switch_filter_block *block,
 				    struct flow_cls_offload *cls)
 {
-- 
2.31.1