Large size UDP Packet

Till Straumann strauman at
Wed Nov 20 15:50:11 UTC 2002

I have implemented an NFS client who does UDP send/rcv with packet sizes
up to the UDP maximum (>MTU). Fragmentation works fine (powerpc-rtems).

-- Till

Dmitry Kurdumov wrote:

>I'm trying to send UDP packet those size is lager then MTU ( 1500 for my
>Ethernet )
>but socket doesn't send it. In udp_usrreq.c  varibale udp_sendspace 
>initialized by 9216. I'm specially try to send smaller size packet
>( for example 6000 ) but it result in fail. May be UDP packet can't be
>fragmented  into several IP's?
>What should I set to properties of UDP socket?
>target: SH4
>Will be glad to any help. Dmitry.

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