[PATCH 1/6] net/hns3: fix querying dummy function failed

[Dongdong Liu]

From: Huisong Li <lihuis...@huawei.com>

The rte_eth_rx/tx_burst_mode_get API will fail when Rx/Tx
function is dummy.

Fixes: 7ef933908f04 ("net/hns3: add simple Tx path")
Fixes: 521ab3e93361 ("net/hns3: add simple Rx path")
Cc: sta...@dpdk.org

Signed-off-by: Huisong Li <lihuis...@huawei.com>
Signed-off-by: Dongdong Liu <liudongdo...@huawei.com>
---
 drivers/net/hns3/hns3_rxtx.c | 38 ++++++++++++++++++++++--------------
 1 file changed, 23 insertions(+), 15 deletions(-)

diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index f1163ce8a9..feef9e1c7b 100644
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -2786,6 +2786,7 @@ hns3_rx_burst_mode_get(struct rte_eth_dev *dev, 
__rte_unused uint16_t queue_id,
                { hns3_recv_scattered_pkts,     "Scalar Scattered" },
                { hns3_recv_pkts_vec,           "Vector Neon"   },
                { hns3_recv_pkts_vec_sve,       "Vector Sve"    },
+               { rte_eth_pkt_burst_dummy,      "Dummy"         },
        };
 
        eth_rx_burst_t pkt_burst = dev->rx_pkt_burst;
@@ -4272,24 +4273,31 @@ int
 hns3_tx_burst_mode_get(struct rte_eth_dev *dev, __rte_unused uint16_t queue_id,
                       struct rte_eth_burst_mode *mode)
 {
+       static const struct {
+               eth_tx_burst_t pkt_burst;
+               const char *info;
+       } burst_infos[] = {
+               { hns3_xmit_pkts_simple,        "Scalar Simple" },
+               { hns3_xmit_pkts,               "Scalar"        },
+               { hns3_xmit_pkts_vec,           "Vector Neon"   },
+               { hns3_xmit_pkts_vec_sve,       "Vector Sve"    },
+               { rte_eth_pkt_burst_dummy,      "Dummy"         },
+       };
+
        eth_tx_burst_t pkt_burst = dev->tx_pkt_burst;
-       const char *info = NULL;
-
-       if (pkt_burst == hns3_xmit_pkts_simple)
-               info = "Scalar Simple";
-       else if (pkt_burst == hns3_xmit_pkts)
-               info = "Scalar";
-       else if (pkt_burst == hns3_xmit_pkts_vec)
-               info = "Vector Neon";
-       else if (pkt_burst == hns3_xmit_pkts_vec_sve)
-               info = "Vector Sve";
-
-       if (info == NULL)
-               return -EINVAL;
+       int ret = -EINVAL;
+       unsigned int i;
 
-       snprintf(mode->info, sizeof(mode->info), "%s", info);
+       for (i = 0; i < RTE_DIM(burst_infos); i++) {
+               if (pkt_burst == burst_infos[i].pkt_burst) {
+                       snprintf(mode->info, sizeof(mode->info), "%s",
+                                burst_infos[i].info);
+                       ret = 0;
+                       break;
+               }
+       }
 
-       return 0;
+       return ret;
 }
 
 static bool
-- 
2.22.0