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net/hns3: optimize SVE Tx performance

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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>
This commit is contained in:
Chengwen Feng 2022-09-05 16:59:35 +08:00 committed by Andrew Rybchenko
parent 76a9c980cf
commit 12590fc503
1 changed files with 10 additions and 9 deletions
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19
drivers/net/hns3/hns3_rxtx_vec_sve.c
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@ -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