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net/virtio: reject deferred Rx start

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Deferred start Rx 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: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Dilshod Urazov 2019-10-09 13:32:05 +01:00 committed by Ferruh Yigit
parent 70c7747689
commit 955d7c1f03
1 changed files with 6 additions and 1 deletions
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7
drivers/net/virtio/virtio_rxtx.c
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@ -929,7 +929,7 @@ virtio_dev_rx_queue_setup(struct rte_eth_dev *dev,
uint16_t queue_idx,
uint16_t nb_desc,
unsigned int socket_id __rte_unused,
const struct rte_eth_rxconf *rx_conf __rte_unused,
const struct rte_eth_rxconf *rx_conf,
struct rte_mempool *mp)
{
uint16_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_RQ_QUEUE_IDX;
@ -939,6 +939,11 @@ virtio_dev_rx_queue_setup(struct rte_eth_dev *dev,
PMD_INIT_FUNC_TRACE();
if (rx_conf->rx_deferred_start) {
PMD_INIT_LOG(ERR, "Rx 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);