[PATCH 1/4] net/hns3: restrict FDIR only support one tunnel header

[Jie Hai]

From: Chengwen Feng <fengchengwen at huawei.com>

The device's flow director supports a maximum of one tunnel header, if
passed more than one tunnel header from rte-flow API, the driver should
return error.

Fixes: fcba820d9b9e ("net/hns3: support flow director")
Cc: stable at dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
Signed-off-by: Jie Hai <haijie1 at huawei.com>
---
 drivers/net/hns3/hns3_flow.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/hns3/hns3_flow.c b/drivers/net/hns3/hns3_flow.c
index 37eb2b4c3807..e287420fb0f8 100644
--- a/drivers/net/hns3/hns3_flow.c
+++ b/drivers/net/hns3/hns3_flow.c
@@ -1221,6 +1221,11 @@ hns3_parse_tunnel(const struct rte_flow_item *item, struct hns3_fdir_rule *rule,
 					  "Tunnel packets must configure "
 					  "with mask");
 
+	if (rule->key_conf.spec.tunnel_type != 0)
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ITEM,
+					  item, "Too many tunnel headers!");
+
 	switch (item->type) {
 	case RTE_FLOW_ITEM_TYPE_VXLAN:
 	case RTE_FLOW_ITEM_TYPE_VXLAN_GPE:
-- 
2.22.0