Intel igb 82576 (netmap mode) and RSS queue issuse with fragmented UDP packets.

[Adrian Chadd]

They all behave the same. You can fix the intel driver(s) by looking
for the TCP/UDP queue config and only enabling IPv4/IPv6 (not TCP/UDP)
hashing.



-adrian


On 1 June 2015 at 01:25, Slawa Olhovchenkov <slw at zxy.spb.ru> wrote:
> I am use Intel 82576 (igb driver) in netmap mode.
> I see isssuse: flow routed in different queue depends of IP flags.
>
> For example:
>
> Total 4 queue.
> UDP flow.
> SRC: 91.214.70.167:12062 DST: 95.31.64.226:49939 Flags:DF routed to queue 0
> SRC: 91.214.70.167:12062 DST: 95.31.64.226:49939 Flags:More_Frags (offset 0, length 1396) routed to queue 3
>
> I understand that next fragment (IP (tos 0x0, ttl 62, id 36361, offset
> 1376, flags [none], proto UDP (17), length 102) 91.214.70.167 >
> 95.72.171.116: ip-proto-17) may be routed in different queue, but why
> fragment 0 routed to different queue? This is software (driver,
> netmap) issuse? Or this is hardware (silicon) isssuse?
>
> What about Intel 10G/40G cards? Chelsio?
>
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