From 6e7cbd63706f3435b9d9a2057a37db1da01db9a7 Mon Sep 17 00:00:00 2001 From: Luca Boccassi Date: Mon, 3 Sep 2018 10:46:47 +0100 Subject: New upstream version 17.11.4 Change-Id: Icb6b9664e7c4adb85c087844abe6e54d6ec32db6 Signed-off-by: Luca Boccassi --- drivers/net/thunderx/nicvf_rxtx.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) (limited to 'drivers/net/thunderx/nicvf_rxtx.c') diff --git a/drivers/net/thunderx/nicvf_rxtx.c b/drivers/net/thunderx/nicvf_rxtx.c index 9d69cf4e..06cbc463 100644 --- a/drivers/net/thunderx/nicvf_rxtx.c +++ b/drivers/net/thunderx/nicvf_rxtx.c @@ -190,12 +190,14 @@ nicvf_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) free_desc -= TX_DESC_PER_PKT; } - sq->tail = tail; - sq->xmit_bufs += i; - rte_wmb(); + if (likely(i)) { + sq->tail = tail; + sq->xmit_bufs += i; + rte_wmb(); - /* Inform HW to xmit the packets */ - nicvf_addr_write(sq->sq_door, i * TX_DESC_PER_PKT); + /* Inform HW to xmit the packets */ + nicvf_addr_write(sq->sq_door, i * TX_DESC_PER_PKT); + } return i; } @@ -246,12 +248,14 @@ nicvf_xmit_pkts_multiseg(void *tx_queue, struct rte_mbuf **tx_pkts, } } - sq->tail = tail; - sq->xmit_bufs += used_bufs; - rte_wmb(); + if (likely(used_desc)) { + sq->tail = tail; + sq->xmit_bufs += used_bufs; + rte_wmb(); - /* Inform HW to xmit the packets */ - nicvf_addr_write(sq->sq_door, used_desc); + /* Inform HW to xmit the packets */ + nicvf_addr_write(sq->sq_door, used_desc); + } return i; } -- cgit 1.2.3-korg