From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jakub Palider Subject: [PATCH 2/2] net/ena: check for free buffers prior to xmit Date: Sat, 29 Oct 2016 03:06:15 +0200 Message-ID: <1477703175-21344-3-git-send-email-jpa@semihalf.com> References: <1477703175-21344-1-git-send-email-jpa@semihalf.com> Cc: evgenys@amazon.com, matua@amazon.com, Tal Avraham , netanel@amazon.com To: dev@dpdk.org Return-path: Received: from mail-lf0-f48.google.com (mail-lf0-f48.google.com [209.85.215.48]) by dpdk.org (Postfix) with ESMTP id 192D06CB8 for ; Sat, 29 Oct 2016 03:06:46 +0200 (CEST) Received: by mail-lf0-f48.google.com with SMTP id f134so63347983lfg.2 for ; Fri, 28 Oct 2016 18:06:46 -0700 (PDT) In-Reply-To: <1477703175-21344-1-git-send-email-jpa@semihalf.com> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Signed-off-by: Tal Avraham Signed-off-by: Jakub Palider --- drivers/net/ena/ena_ethdev.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c index adf94f2..ab9a178 100644 --- a/drivers/net/ena/ena_ethdev.c +++ b/drivers/net/ena/ena_ethdev.c @@ -1583,7 +1583,7 @@ static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, struct ena_tx_buffer *tx_info; struct ena_com_buf *ebuf; uint16_t rc, req_id, total_tx_descs = 0; - uint16_t sent_idx = 0; + uint16_t sent_idx = 0, empty_tx_reqs; int nb_hw_desc; /* Check adapter state */ @@ -1593,6 +1593,10 @@ static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, return 0; } + empty_tx_reqs = ring_size - (next_to_use - next_to_clean); + if (nb_pkts > empty_tx_reqs) + nb_pkts = empty_tx_reqs; + for (sent_idx = 0; sent_idx < nb_pkts; sent_idx++) { mbuf = tx_pkts[sent_idx]; -- 2.5.0