diff options
| author |   Luca Boccassi <luca.boccassi@gmail.com> | 2018-09-03 10:46:47 +0100 |
|---|---|---|
| committer | Luca Boccassi <luca.boccassi@gmail.com> | 2018-09-03 10:47:29 +0100 |
| commit | 6e7cbd63706f3435b9d9a2057a37db1da01db9a7 (patch) | |
| tree | 16c34356813477e4703a15f943b8ed665a39fb5f /drivers/net/thunderx/nicvf_rxtx.c | |
| parent | e4df4d55df003957fc5afd7440e3d3192d7ce218 (diff) | |
New upstream version 17.11.4upstream/17.11.4
Change-Id: Icb6b9664e7c4adb85c087844abe6e54d6ec32db6
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
Diffstat (limited to 'drivers/net/thunderx/nicvf_rxtx.c')
| -rw-r--r-- | drivers/net/thunderx/nicvf_rxtx.c | 24 |
1 files changed, 14 insertions, 10 deletions
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; } |