net.inet.tcp.recvbuf_inc removed?

[kalleboy]

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.

 

[kalleboy]

Any idea?

 

[SirDice]

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]

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

 

[SirDice]

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.

 

[kalleboy]

Weird.

 

[bgdnlp]

This is the commit that removed it: https://cgit.freebsd.org/src/commit/?id=560c058683bd65b7c2dde1d918b831bca3ee85ef

Replying here because this is the top (and only significant) result on Google.