From: Chengwen Feng <fengchengwen@huawei.com> Optimize SVE xmit algorithm performance, will get about 1%+ performance gain under 64B macfwd. Cc: stable@dpdk.org Signed-off-by: Chengwen Feng <fengchengwen@huawei.com> --- drivers/net/hns3/hns3_rxtx_vec_sve.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/net/hns3/hns3_rxtx_vec_sve.c b/drivers/net/hns3/hns3_rxtx_vec_sve.c index f09a81dbd5..6f23ba674d 100644 --- a/drivers/net/hns3/hns3_rxtx_vec_sve.c +++ b/drivers/net/hns3/hns3_rxtx_vec_sve.c @@ -389,10 +389,12 @@ hns3_tx_fill_hw_ring_sve(struct hns3_tx_queue *txq, HNS3_UINT32_BIT; svuint64_t base_addr, buf_iova, data_off, data_len, addr; svuint64_t offsets = svindex_u64(0, BD_SIZE); - uint32_t i = 0; - svbool_t pg = svwhilelt_b64_u32(i, nb_pkts); + uint32_t cnt = svcntd(); + svbool_t pg; + uint32_t i; - do { + for (i = 0; i < nb_pkts; /* i is updated in the inner loop */) { + pg = svwhilelt_b64_u32(i, nb_pkts); base_addr = svld1_u64(pg, (uint64_t *)pkts); /* calc mbuf's field buf_iova address */ buf_iova = svadd_n_u64_z(pg, base_addr, @@ -439,12 +441,11 @@ hns3_tx_fill_hw_ring_sve(struct hns3_tx_queue *txq, (svaddv_u64(pg, data_len) >> HNS3_UINT16_BIT); /* update index for next loop */ - i += svcntd(); - pkts += svcntd(); - txdp += svcntd(); - tx_entry += svcntd(); - pg = svwhilelt_b64_u32(i, nb_pkts); - } while (svptest_any(svptrue_b64(), pg)); + i += cnt; + pkts += cnt; + txdp += cnt; + tx_entry += cnt; + } } static uint16_t -- 2.30.0