* broken ipv6 tcp csum offload on thunderx
@ 2017-11-22 8:54 Florian Westphal
2017-11-22 9:06 ` Sunil Kovvuri
0 siblings, 1 reply; 2+ messages in thread
From: Florian Westphal @ 2017-11-22 8:54 UTC (permalink / raw)
To: tsrinivasulu; +Cc: netdev, sgoutham
Hi.
We are experiencing broken ipv6 connectivity with 4.14 kernel
on arm64 with thunderx.
ping6 still works, but it looks like tcp syn packets get sent
with a wrong checksum -- socket remains in SYN-SENT state.
after running
ethtool -K enP2p1s0f1 tx-checksum-ipv6 off
ipv6 tcp appears to works fine.
# ethtool -i enP2p1s0f1
driver: thunder-nicvf
version: 1.0
firmware-version:
expansion-rom-version:
bus-info: 0002:01:00.1
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: yes
supports-priv-flags: no
[0.000000] Boot CPU: AArch64 Processor [431f0a10]
[0.000000] Machine model: cavium,thunder-88xx
[0.000000] efi: Getting EFI parameters from FDT:
[0.000000] efi: EFI v2.40 by Cavium Thunder cn88xx EFI ThunderX-Firmware-Release-1.22.17 Sep 21 2017 14:26:28
[0.000000] efi: ACPI=0xffff0000 ACPI 2.0=0xffff0014 SMBIOS=0xffef0000 SMBIOS 3.0=0x10ffaf30000 ESRT=0x10fff673e18
What other information do you need to debug this?
Thanks,
Florian
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: broken ipv6 tcp csum offload on thunderx
2017-11-22 8:54 broken ipv6 tcp csum offload on thunderx Florian Westphal
@ 2017-11-22 9:06 ` Sunil Kovvuri
0 siblings, 0 replies; 2+ messages in thread
From: Sunil Kovvuri @ 2017-11-22 9:06 UTC (permalink / raw)
To: Florian Westphal; +Cc: Thanneeru Srinivasulu, Linux Netdev List, Sunil Goutham
On Wed, Nov 22, 2017 at 2:24 PM, Florian Westphal <fw@strlen.de> wrote:
> Hi.
>
> We are experiencing broken ipv6 connectivity with 4.14 kernel
> on arm64 with thunderx.
>
> ping6 still works, but it looks like tcp syn packets get sent
> with a wrong checksum -- socket remains in SYN-SENT state.
>
> after running
>
> ethtool -K enP2p1s0f1 tx-checksum-ipv6 off
>
> ipv6 tcp appears to works fine.
>
> # ethtool -i enP2p1s0f1
> driver: thunder-nicvf
> version: 1.0
> firmware-version:
> expansion-rom-version:
> bus-info: 0002:01:00.1
> supports-statistics: yes
> supports-test: no
> supports-eeprom-access: no
> supports-register-dump: yes
> supports-priv-flags: no
>
> [0.000000] Boot CPU: AArch64 Processor [431f0a10]
> [0.000000] Machine model: cavium,thunder-88xx
> [0.000000] efi: Getting EFI parameters from FDT:
> [0.000000] efi: EFI v2.40 by Cavium Thunder cn88xx EFI ThunderX-Firmware-Release-1.22.17 Sep 21 2017 14:26:28
> [0.000000] efi: ACPI=0xffff0000 ACPI 2.0=0xffff0014 SMBIOS=0xffef0000 SMBIOS 3.0=0x10ffaf30000 ESRT=0x10fff673e18
>
> What other information do you need to debug this?
We have a fix ready for this, will submit upstream asap.
Thanks,
Sunil.
>
> Thanks,
> Florian
^ permalink raw reply [flat|nested] 2+ messages in thread
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