[dpdk-stable] [PATCH v4 6/8] net/netvsc: handle transmit completions based on burst size
Stephen Hemminger
stephen at networkplumber.org
Tue Mar 31 19:14:02 CEST 2020
If tx_free_thresh is quite low, it is possible that we need to
cleanup based on burst size.
Fixes: fc30efe3a22e ("net/netvsc: change Rx descriptor setup and sizing")
Cc: stable at dpdk.org
Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
drivers/net/netvsc/hn_rxtx.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/netvsc/hn_rxtx.c b/drivers/net/netvsc/hn_rxtx.c
index e8df84604202..cbdfcc628b75 100644
--- a/drivers/net/netvsc/hn_rxtx.c
+++ b/drivers/net/netvsc/hn_rxtx.c
@@ -1375,7 +1375,7 @@ hn_xmit_pkts(void *ptxq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
struct hn_data *hv = txq->hv;
struct rte_eth_dev *vf_dev;
bool need_sig = false;
- uint16_t nb_tx;
+ uint16_t nb_tx, avail;
int ret;
if (unlikely(hv->closed))
@@ -1390,7 +1390,8 @@ hn_xmit_pkts(void *ptxq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
return (*vf_dev->tx_pkt_burst)(sub_q, tx_pkts, nb_pkts);
}
- if (rte_mempool_avail_count(txq->txdesc_pool) <= txq->free_thresh)
+ avail = rte_mempool_avail_count(txq->txdesc_pool);
+ if (nb_pkts > avail || avail <= txq->free_thresh)
hn_process_events(hv, txq->queue_id, 0);
for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
--
2.20.1
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