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6b50c489a3
numam-dpdk/drivers/net/i40e
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Gavin Hu 6b50c489a3 net/i40e: relax barrier in Tx for NEON 
To keep ordering of mixed accesses, 'DMB OSH' is sufficient.
'DSB' inside the I40E_PCI_REG_WRITE is overkill.[1]

This patch fixes by replacing with just sufficient barriers in the
normal PMD and vPMD.

It showed 7% performance uplift on ThunderX2 and 4% on Arm N1SDP.
The test case is the RFC2544 zero-loss test running testpmd.

[1] http://inbox.dpdk.org/dev/CALBAE1M-ezVWCjqCZDBw+MMDEC4O9
qf0Kpn89EMdGDajepKoZQ@mail.gmail.com

Fixes: ae0eb310f2 ("net/i40e: implement vector PMD for ARM")
Cc: stable@dpdk.org

Signed-off-by: Gavin Hu <gavin.hu@arm.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
2020-04-21 13:57:08 +02:00
..
base net/i40e/base: update version 2020-04-21 13:57:07 +02:00
i40e_ethdev_vf.c net/i40e: enable VF to program MAC address 2020-04-21 13:57:06 +02:00
i40e_ethdev.c net/i40e/base: introduce device ID for V710-TL 5G 2020-04-21 13:57:07 +02:00
i40e_ethdev.h net/i40e: enable MAC address as flow director input set 2020-04-21 13:57:06 +02:00
i40e_fdir.c net/i40e: enable MAC address as flow director input set 2020-04-21 13:57:06 +02:00
i40e_flow.c net/i40e: enable MAC address as flow director input set 2020-04-21 13:57:06 +02:00
i40e_logs.h net/i40e: use dynamic log type for Tx/Rx debug 2019-10-07 15:00:58 +02:00
i40e_pf.c net/i40e: limit the number of VF messages 2019-10-07 15:00:56 +02:00
i40e_pf.h net/i40e: support AVF basic interface 2018-01-16 18:47:49 +01:00
i40e_regs.h drivers: use SPDX tag for Intel copyright files 2018-01-04 22:41:39 +01:00
i40e_rxtx_vec_altivec.c replace cold attributes 2020-04-16 18:30:58 +02:00
i40e_rxtx_vec_avx2.c net/i40e: fix clang build with 16B descriptors 2019-11-20 17:36:05 +01:00
i40e_rxtx_vec_common.h net/i40e: fix Rx instability with vector mode 2018-11-05 16:50:14 +01:00
i40e_rxtx_vec_neon.c net/i40e: relax barrier in Tx for NEON 2020-04-21 13:57:08 +02:00
i40e_rxtx_vec_sse.c replace cold attributes 2020-04-16 18:30:58 +02:00
i40e_rxtx.c replace cold attributes 2020-04-16 18:30:58 +02:00
i40e_rxtx.h net/i40e: cleanup Tx buffers 2020-01-17 19:46:26 +01:00
i40e_tm.c drivers: use SPDX tag for Intel copyright files 2018-01-04 22:41:39 +01:00
i40e_vf_representor.c ethdev: change allmulticast callbacks to return status 2019-10-07 15:00:55 +02:00
Makefile build: disable experimental API check internally 2020-04-14 16:22:34 +02:00
meson.build build: disable experimental API check internally 2020-04-14 16:22:34 +02:00
rte_pmd_i40e_version.map build: align symbols with global ABI version 2019-11-20 23:05:39 +01:00
rte_pmd_i40e.c net/i40e: handle ESP tunnel 2020-01-17 19:59:18 +01:00
rte_pmd_i40e.h net/i40e: support ipn3ke FPGA port bonding 2019-11-20 17:36:05 +01:00