net/hns3: report Rx drop packets enable configuration

Currently, if there are not available Rx buffer descriptors in receiving
direction based on hns3 network engine, incoming packets will always be
dropped by hardware. This patch reports the '.rx_drop_en' information to
DPDK framework in the '.dev_infos_get', '.rxq_info_get' and
'.rx_queue_setup' ops implementation function.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>

diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 81e773046e38fec07cbf2aa2ae6b0649d8ae80d5..bcbbd7e81b9346d3325ed68544e1c2dfe76f29f2 100644 (file)
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -2495,6 +2495,15 @@ hns3_dev_infos_get(struct rte_eth_dev *eth_dev, struct rte_eth_dev_info *info)
                .nb_mtu_seg_max = HNS3_MAX_NON_TSO_BD_PER_PKT,
        };
 
+       info->default_rxconf = (struct rte_eth_rxconf) {
+               /*
+                * If there are no available Rx buffer descriptors, incoming
+                * packets are always dropped by hardware based on hns3 network
+                * engine.
+                */
+               .rx_drop_en = 1,
+       };
+
        info->vmdq_queue_num = 0;
 
        info->reta_size = HNS3_RSS_IND_TBL_SIZE;

diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index 63089d0bd438917d2aa1d4c5d02039df65833f92..e6c69ce75f4ece2fd7b5083dfbc37a77569a4020 100644 (file)
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -947,6 +947,15 @@ hns3vf_dev_infos_get(struct rte_eth_dev *eth_dev, struct rte_eth_dev_info *info)
                .nb_mtu_seg_max = HNS3_MAX_NON_TSO_BD_PER_PKT,
        };
 
+       info->default_rxconf = (struct rte_eth_rxconf) {
+               /*
+                * If there are no available Rx buffer descriptors, incoming
+                * packets are always dropped by hardware based on hns3 network
+                * engine.
+                */
+               .rx_drop_en = 1,
+       };
+
        info->vmdq_queue_num = 0;
 
        info->reta_size = HNS3_RSS_IND_TBL_SIZE;

diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index c0f798159c14a29794e8bd70ebb08461611f7e89..3e5e32e387fd6ba7f4633189c433d8fe72cb480d 100644 (file)
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -1251,6 +1251,12 @@ hns3_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t nb_desc,
                return -EINVAL;
        }
 
+       if (conf->rx_drop_en == 0)
+               hns3_warn(hw, "if there are no available Rx descriptors,"
+                         "incoming packets are always dropped. input parameter"
+                         " conf->rx_drop_en(%u) is uneffective.",
+                         conf->rx_drop_en);
+
        if (dev->data->rx_queues[idx]) {
                hns3_rx_queue_release(dev->data->rx_queues[idx]);
                dev->data->rx_queues[idx] = NULL;