net.inet.tcp.recvbuf_inc removed?

kalleboy

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Hi there.

Under FreeBSD 13, the command "sysctl net.inet.tcp.sendbuf_inc" replies as;

net.inet.tcp.sendbuf_inc: 8192

However, "sysctl net.inet.tcp.recvbuf_inc" says;

sysctl: unknown oid 'net.inet.tcp.recvbuf_inc'

Any idea why it doesn't exist? Is such parameter removed in FreeBSD 13? If so, why only *recv?

Thanks.
 

SirDice

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Is such parameter removed in FreeBSD 13?
Looks that way.

If so, why only *recv?
Good question, no idea. Might want to ask the developers on the mailing lists, freebsd-net@ is probably the most appropriate place to ask.
 

covacat

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looks like it grows by a half of current value until recvbuf_max (grows by 50%)
 

SirDice

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I only found a really old commit from 2007 that references that sysctl. But that was a commit to add them. Haven't found anything in the git logs that mentions removing it.
 
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