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kernel_samsung_a53x/drivers/net/ethernet/stmicro/stmmac
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Maxime Chevallier e47abd9746 net: stmmac: dwmac-socfpga: Set RX watchdog interrupt as broken 
[ Upstream commit 407618d66dba55e7db1278872e8be106808bbe91 ]

On DWMAC3 and later, there's a RX Watchdog interrupt that's used for
interrupt coalescing. It's known to be buggy on some platforms, and
dwmac-socfpga appears to be one of them. Changing the interrupt
coalescing from ethtool doesn't appear to have any effect here.

Without disabling RIWT (Received Interrupt Watchdog Timer, I
believe...), we observe latencies while receiving traffic that amount to
around ~0.4ms. This was discovered with NTP but can be easily reproduced
with a simple ping. Without this patch :

64 bytes from 192.168.5.2: icmp_seq=1 ttl=64 time=0.657 ms

With this patch :

64 bytes from 192.168.5.2: icmp_seq=1 ttl=64 time=0.254 ms

Fixes: 801d233b7302 ("net: stmmac: Add SOCFPGA glue driver")
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20241122141256.764578-1-maxime.chevallier@bootlin.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-12-17 13:24:15 +01:00
..
altr_tse_pcs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
altr_tse_pcs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
chain_mode.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
common.h net: stmmac: xgmac: fix handling of DPP safety error for DMA channels 2024-11-18 12:13:24 +01:00
descs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
descs_com.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac-anarion.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-dwc-qos-eth.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-generic.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-imx.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-intel-plat.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-intel.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac-intel.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac-ipq806x.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-lpc18xx.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-mediatek.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-meson.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-meson8b.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-oxnas.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-qcom-ethqos.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-rk.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-socfpga.c net: stmmac: dwmac-socfpga: Set RX watchdog interrupt as broken 2024-12-17 13:24:15 +01:00
dwmac-sti.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-stm32.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-sun8i.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac-sunxi.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
dwmac4.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac4_core.c Revert "net: stmmac: Correct byte order of perfect_match" 2024-11-24 00:23:55 +01:00
dwmac4_descs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac4_descs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac4_dma.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac4_dma.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac4_lib.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac5.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac5.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac100.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac100_core.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac100_dma.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac1000.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac1000_core.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac1000_dma.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac_dma.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwmac_lib.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwxgmac2.h net: stmmac: xgmac: fix a typo of register name in DPP safety handling 2024-11-18 12:13:27 +01:00
dwxgmac2_core.c Revert "net: stmmac: Correct byte order of perfect_match" 2024-11-24 00:23:55 +01:00
dwxgmac2_descs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwxgmac2_dma.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dwxlgmac2.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
enh_desc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hwif.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hwif.h Revert "net: stmmac: Correct byte order of perfect_match" 2024-11-24 00:23:55 +01:00
Kconfig Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mmc.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mmc_core.c net: stmmac: xgmac: Disable FPE MMC interrupts 2024-11-18 12:11:11 +01:00
norm_desc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ring_mode.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
stmmac.h Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
stmmac_ethtool.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
stmmac_hwtstamp.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
stmmac_main.c Revert "net: stmmac: Correct byte order of perfect_match" 2024-11-24 00:23:55 +01:00
stmmac_mdio.c net: stmmac: Handle disabled MDIO busses from devicetree 2024-11-18 12:11:49 +01:00
stmmac_pci.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
stmmac_pcs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
stmmac_platform.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
stmmac_platform.h Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
stmmac_ptp.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
stmmac_ptp.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
stmmac_selftests.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
stmmac_tc.c Revert "net: stmmac: Fix zero-division error when disabling tc cbs" 2024-11-24 00:23:01 +01:00