net/octeontx2: perf improvement to tx vector func
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Commit Message
From: Pavan Nikhilesh <pbhagavatula@marvell.com>
Use scalar loads instead of vector loads for fields
that don't need any vector operations.
Change-Id: I846731cd731d347a7f7e6a2e01d89dfa189ac244
Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Reviewed-on: https://sj1git1.cavium.com/21243
Tested-by: sa_ip-toolkits-Jenkins
Tested-by: sa_ip-sw-jenkins <sa_ip-sw-jenkins@marvell.com>
Reviewed-by: Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>
Reviewed-by: Jerin Jacob Kollanukkaran <jerinj@marvell.com>
---
drivers/net/octeontx2/otx2_tx.c | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)
@@ -112,7 +112,6 @@ nix_xmit_pkts_vector(void *tx_queue, struct rte_mbuf **tx_pkts,
uint64x2_t ltypes01, ltypes23;
uint64x2_t xtmp128, ytmp128;
uint64x2_t xmask01, xmask23;
- uint64x2_t mbuf01, mbuf23;
uint64x2_t cmd00, cmd01;
uint64x2_t cmd10, cmd11;
uint64x2_t cmd20, cmd21;
@@ -137,9 +136,6 @@ nix_xmit_pkts_vector(void *tx_queue, struct rte_mbuf **tx_pkts,
sgdesc23_w0 = sgdesc01_w0;
for (i = 0; i < pkts; i += NIX_DESCS_PER_LOOP) {
- mbuf01 = vld1q_u64((uint64_t *)tx_pkts);
- mbuf23 = vld1q_u64((uint64_t *)(tx_pkts + 2));
-
/* Clear lower 32bit of SEND_HDR_W0 and SEND_SG_W0 */
senddesc01_w0 = vbicq_u64(senddesc01_w0,
vdupq_n_u64(0xFFFFFFFF));
@@ -149,13 +145,11 @@ nix_xmit_pkts_vector(void *tx_queue, struct rte_mbuf **tx_pkts,
senddesc23_w0 = senddesc01_w0;
sgdesc23_w0 = sgdesc01_w0;
- tx_pkts = tx_pkts + NIX_DESCS_PER_LOOP;
-
/* Move mbufs to iova */
- mbuf0 = (uint64_t *)vgetq_lane_u64(mbuf01, 0);
- mbuf1 = (uint64_t *)vgetq_lane_u64(mbuf01, 1);
- mbuf2 = (uint64_t *)vgetq_lane_u64(mbuf23, 0);
- mbuf3 = (uint64_t *)vgetq_lane_u64(mbuf23, 1);
+ mbuf0 = (uint64_t *)tx_pkts[0];
+ mbuf1 = (uint64_t *)tx_pkts[1];
+ mbuf2 = (uint64_t *)tx_pkts[2];
+ mbuf3 = (uint64_t *)tx_pkts[3];
mbuf0 = (uint64_t *)((uintptr_t)mbuf0 +
offsetof(struct rte_mbuf, buf_iova));
@@ -927,6 +921,7 @@ nix_xmit_pkts_vector(void *tx_queue, struct rte_mbuf **tx_pkts,
lmt_status = otx2_lmt_submit(io_addr);
} while (lmt_status == 0);
+ tx_pkts = tx_pkts + NIX_DESCS_PER_LOOP;
}
return pkts;