Re: in_cksum: out of data

[Joerg Sonnenberger <joerg%bec.de@localhost>]

Am Thu, May 19, 2022 at 06:28:44AM +0000 schrieb Emmanuel Dreyfus:
> Hello
> 
> From time to time I get on the console
> in_cksum: out of data
> 
> It comes from src/sys/arch/amd64/amd64/cpu_in_cksum.S
> .Mout_of_mbufs_msg:
> .string "in_cksum: out of data\n"
> 
> out_of_mbufs suggests mbufs shortage, but the usage of the string
> in the file suggests other uses. What does it means, after all?

It's not about mbuf shortage, but that chksum is asked to process more
data than the mbuf chain contains. E.g. you have three mbufs covering
1024 and the request is to process 1025 Bytes.

Joerg