From: Dilshod Urazov <dilshod.urazov@oktetlabs.ru>
Date: Wed, 9 Oct 2019 12:32:06 +0000 (+0100)
Subject: net/virtio: reject deferred Tx start
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=c0e03310ee90c5d7aff9fffb243f3374f0b0cd61;p=dpdk.git

net/virtio: reject deferred Tx start

Deferred start Tx queue is not supported by the driver.

Fixes: 0748be2cf9a2 ("ethdev: queue start and stop")
Cc: stable@dpdk.org

Signed-off-by: Dilshod Urazov <dilshod.urazov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---

diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c
index 405c313f20..0959250a33 100644
--- a/drivers/net/virtio/virtio_rxtx.c
+++ b/drivers/net/virtio/virtio_rxtx.c
@@ -1067,6 +1067,11 @@ virtio_dev_tx_queue_setup(struct rte_eth_dev *dev,
 
 	PMD_INIT_FUNC_TRACE();
 
+	if (tx_conf->tx_deferred_start) {
+		PMD_INIT_LOG(ERR, "Tx deferred start is not supported");
+		return -EINVAL;
+	}
+
 	if (nb_desc == 0 || nb_desc > vq->vq_nentries)
 		nb_desc = vq->vq_nentries;
 	vq->vq_free_cnt = RTE_MIN(vq->vq_free_cnt, nb_desc);