From c7519ea5eb8d6b810aec74b87b60e0689a6c20ce Mon Sep 17 00:00:00 2001 From: Rafal Kozik Date: Fri, 14 Dec 2018 14:18:34 +0100 Subject: [PATCH] net/ena: call additional doorbells if needed Before sending next packet, check if calling doorbell is needed. Signed-off-by: Rafal Kozik Acked-by: Michal Krawczyk --- drivers/net/ena/ena_ethdev.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c index f835523771..5f7dec086d 100644 --- a/drivers/net/ena/ena_ethdev.c +++ b/drivers/net/ena/ena_ethdev.c @@ -2363,7 +2363,16 @@ static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, ena_tx_ctx.num_bufs = tx_info->num_of_bufs; - /* Write data to device */ + if (ena_com_is_doorbell_needed(tx_ring->ena_com_io_sq, + &ena_tx_ctx)) { + RTE_LOG(DEBUG, PMD, "llq tx max burst size of queue %d" + " achieved, writing doorbell to send burst\n", + tx_ring->id); + rte_wmb(); + ena_com_write_sq_doorbell(tx_ring->ena_com_io_sq); + } + + /* prepare the packet's descriptors to dma engine */ rc = ena_com_prepare_tx(tx_ring->ena_com_io_sq, &ena_tx_ctx, &nb_hw_desc); if (unlikely(rc)) -- 2.20.1