[PATCH v2 4/7] net/hns3: fix more mbufs are freed when Tx done cleanup
Min Hu (Connor)
humin29 at huawei.com
Thu May 5 14:27:04 CEST 2022
From: Chengwen Feng <fengchengwen at huawei.com>
Currently, the hns3 PMD may free more mbufs than free_cnt parameter,
this is an incorrect implementation. This patch fixes it.
Fixes: 0b77e8f3d364 ("net/hns3: optimize Tx performance")
Cc: stable at dpdk.org
Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
Signed-off-by: Min Hu (Connor) <humin29 at huawei.com>
---
drivers/net/hns3/hns3_rxtx.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index a28de06dfd..0c91e4721e 100644
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -4595,7 +4595,7 @@ hns3_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
static int
hns3_tx_done_cleanup_full(struct hns3_tx_queue *txq, uint32_t free_cnt)
{
- uint16_t round_free_cnt;
+ uint16_t round_cnt;
uint32_t idx;
if (free_cnt == 0 || free_cnt > txq->nb_tx_desc)
@@ -4604,13 +4604,13 @@ hns3_tx_done_cleanup_full(struct hns3_tx_queue *txq, uint32_t free_cnt)
if (txq->tx_rs_thresh == 0)
return 0;
- round_free_cnt = roundup(free_cnt, txq->tx_rs_thresh);
- for (idx = 0; idx < round_free_cnt; idx += txq->tx_rs_thresh) {
+ round_cnt = rounddown(free_cnt, txq->tx_rs_thresh);
+ for (idx = 0; idx < round_cnt; idx += txq->tx_rs_thresh) {
if (hns3_tx_free_useless_buffer(txq) != 0)
break;
}
- return RTE_MIN(idx, free_cnt);
+ return idx;
}
int
--
2.33.0
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