From: Andrew Boyer <aboyer@pensando.io>
Date: Tue, 16 Feb 2021 20:35:38 +0000 (-0800)
Subject: net/ionic: send as many packets as possible
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=86551f81a6e55fb4bb1b8602dff74f15f86cad6c;p=dpdk.git

net/ionic: send as many packets as possible

Rather than dropping the whole burst if some don't fit.
This improves performance.

Signed-off-by: Andrew Boyer <aboyer@pensando.io>
Signed-off-by: Vishwas Danivas <vishwas@pensando.io>
---

diff --git a/drivers/net/ionic/ionic_rxtx.c b/drivers/net/ionic/ionic_rxtx.c
index bb67c497a1..b4bdeabad1 100644
--- a/drivers/net/ionic/ionic_rxtx.c
+++ b/drivers/net/ionic/ionic_rxtx.c
@@ -536,15 +536,16 @@ ionic_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 	struct ionic_tx_stats *stats = &txq->stats;
 	uint32_t next_q_head_idx;
 	uint32_t bytes_tx = 0;
-	uint16_t nb_tx = 0;
+	uint16_t nb_avail, nb_tx = 0;
 	int err;
 
 	/* Cleaning old buffers */
 	ionic_tx_flush(txq);
 
-	if (unlikely(ionic_q_space_avail(q) < nb_pkts)) {
-		stats->stop += nb_pkts;
-		return 0;
+	nb_avail = ionic_q_space_avail(q);
+	if (unlikely(nb_avail < nb_pkts)) {
+		stats->stop += nb_pkts - nb_avail;
+		nb_pkts = nb_avail;
 	}
 
 	while (nb_tx < nb_pkts) {