[dpdk-dev] [PATCH 1/8] net/hns3: report Rx free threshold
Wei Hu (Xavier)
huwei013 at chinasoftinc.com
Mon Sep 7 11:08:18 CEST 2020
From: "Wei Hu (Xavier)" <xavier.huwei at huawei.com>
This patch reports .rx_free_thresh value in the .dev_infos_get ops
implementation function named hns3_dev_infos_get and hns3vf_dev_infos_get.
In addition, the name of the member variable of struct hns3_rx_queue is
modified and comments are added to improve code readability.
Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei at huawei.com>
---
drivers/net/hns3/hns3_ethdev.c | 2 ++
drivers/net/hns3/hns3_ethdev_vf.c | 2 ++
drivers/net/hns3/hns3_rxtx.c | 30 ++++++++++++------------------
drivers/net/hns3/hns3_rxtx.h | 9 ++++++---
4 files changed, 22 insertions(+), 21 deletions(-)
diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 4d5fa94..6fa34e8 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -2501,12 +2501,14 @@ hns3_dev_infos_get(struct rte_eth_dev *eth_dev, struct rte_eth_dev_info *info)
};
info->default_rxconf = (struct rte_eth_rxconf) {
+ .rx_free_thresh = HNS3_DEFAULT_RX_FREE_THRESH,
/*
* If there are no available Rx buffer descriptors, incoming
* packets are always dropped by hardware based on hns3 network
* engine.
*/
.rx_drop_en = 1,
+ .offloads = 0,
};
info->vmdq_queue_num = 0;
diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index 7fd0e6a..7226cc5 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -944,12 +944,14 @@ hns3vf_dev_infos_get(struct rte_eth_dev *eth_dev, struct rte_eth_dev_info *info)
};
info->default_rxconf = (struct rte_eth_rxconf) {
+ .rx_free_thresh = HNS3_DEFAULT_RX_FREE_THRESH,
/*
* If there are no available Rx buffer descriptors, incoming
* packets are always dropped by hardware based on hns3 network
* engine.
*/
.rx_drop_en = 1,
+ .offloads = 0,
};
info->vmdq_queue_num = 0;
diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index 308d0a6..fe2a7a4 100644
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -652,8 +652,7 @@ hns3_dev_rx_queue_start(struct hns3_adapter *hns, uint16_t idx)
}
rxq->next_to_use = 0;
- rxq->next_to_clean = 0;
- rxq->nb_rx_hold = 0;
+ rxq->rx_free_hold = 0;
hns3_init_rx_queue_hw(rxq);
return 0;
@@ -667,8 +666,7 @@ hns3_fake_rx_queue_start(struct hns3_adapter *hns, uint16_t idx)
rxq = (struct hns3_rx_queue *)hw->fkq_data.rx_queues[idx];
rxq->next_to_use = 0;
- rxq->next_to_clean = 0;
- rxq->nb_rx_hold = 0;
+ rxq->rx_free_hold = 0;
hns3_init_rx_queue_hw(rxq);
}
@@ -1303,10 +1301,8 @@ hns3_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t nb_desc,
rxq->hns = hns;
rxq->mb_pool = mp;
- if (conf->rx_free_thresh <= 0)
- rxq->rx_free_thresh = DEFAULT_RX_FREE_THRESH;
- else
- rxq->rx_free_thresh = conf->rx_free_thresh;
+ rxq->rx_free_thresh = (conf->rx_free_thresh > 0) ?
+ conf->rx_free_thresh : HNS3_DEFAULT_RX_FREE_THRESH;
rxq->rx_deferred_start = conf->rx_deferred_start;
rx_entry_len = sizeof(struct hns3_entry) * rxq->nb_rx_desc;
@@ -1319,8 +1315,7 @@ hns3_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t nb_desc,
}
rxq->next_to_use = 0;
- rxq->next_to_clean = 0;
- rxq->nb_rx_hold = 0;
+ rxq->rx_free_hold = 0;
rxq->pkt_first_seg = NULL;
rxq->pkt_last_seg = NULL;
rxq->port_id = dev->data->port_id;
@@ -1656,11 +1651,11 @@ hns3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
nb_rx_bd = 0;
rxq = rx_queue;
- rx_id = rxq->next_to_clean;
+ rx_id = rxq->next_to_use;
rx_ring = rxq->rx_ring;
+ sw_ring = rxq->sw_ring;
first_seg = rxq->pkt_first_seg;
last_seg = rxq->pkt_last_seg;
- sw_ring = rxq->sw_ring;
while (nb_rx < nb_pkts) {
rxdp = &rx_ring[rx_id];
@@ -1843,16 +1838,15 @@ hns3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
first_seg = NULL;
}
- rxq->next_to_clean = rx_id;
+ rxq->next_to_use = rx_id;
rxq->pkt_first_seg = first_seg;
rxq->pkt_last_seg = last_seg;
- nb_rx_bd = nb_rx_bd + rxq->nb_rx_hold;
- if (nb_rx_bd > rxq->rx_free_thresh) {
- hns3_clean_rx_buffers(rxq, nb_rx_bd);
- nb_rx_bd = 0;
+ rxq->rx_free_hold += nb_rx_bd;
+ if (rxq->rx_free_hold > rxq->rx_free_thresh) {
+ hns3_clean_rx_buffers(rxq, rxq->rx_free_hold);
+ rxq->rx_free_hold = 0;
}
- rxq->nb_rx_hold = nb_rx_bd;
return nb_rx;
}
diff --git a/drivers/net/hns3/hns3_rxtx.h b/drivers/net/hns3/hns3_rxtx.h
index 4b3269b..a2d6514 100644
--- a/drivers/net/hns3/hns3_rxtx.h
+++ b/drivers/net/hns3/hns3_rxtx.h
@@ -10,6 +10,7 @@
#define HNS3_DEFAULT_RING_DESC 1024
#define HNS3_ALIGN_RING_DESC 32
#define HNS3_RING_BASE_ALIGN 128
+#define HNS3_DEFAULT_RX_FREE_THRESH 32
#define HNS3_512_BD_BUF_SIZE 512
#define HNS3_1K_BD_BUF_SIZE 1024
@@ -243,12 +244,14 @@ struct hns3_rx_queue {
uint16_t queue_id;
uint16_t port_id;
uint16_t nb_rx_desc;
- uint16_t nb_rx_hold;
- uint16_t rx_tail;
- uint16_t next_to_clean;
uint16_t next_to_use;
uint16_t rx_buf_len;
+ /*
+ * threshold for the number of BDs waited to passed to hardware. If the
+ * number exceeds the threshold, driver will pass these BDs to hardware.
+ */
uint16_t rx_free_thresh;
+ uint16_t rx_free_hold; /* num of BDs waited to passed to hardware */
/*
* port based vlan configuration state.
--
2.9.5
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