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net/netvsc: handle Tx completions based on burst size

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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@dpdk.org

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Stephen Hemminger 2020-03-31 10:14:02 -07:00 committed by Ferruh Yigit
parent dfd3f0fce8
commit 56edef9906
1 changed files with 3 additions and 2 deletions
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5
drivers/net/netvsc/hn_rxtx.c
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@ -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++) {