Messages in this thread | | | Subject | Re: [RFC] [TCP 1/3] tcp: Add MSG_NEW_PACKET flag to indicate preferable packet boundaries | From | Eric Dumazet <> | Date | Fri, 29 Jun 2012 17:11:06 +0200 |
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On Fri, 2012-06-29 at 16:54 +0200, Andreas Gruenbacher wrote: > The MSG_NEW_PACKET flag indicates to sendmsg / sendpage that the message or > page should be put into a new packet even when there is still room left in the > previous packet. > > In the tcp protocol, messages which are not sent immediately are queued. When > more data is sent, it will be added to the last segment in that queue until > that segment is "full" whenever possible; only then is a new segment added. > Right now, there is no way to indicate when tcp should start a new segment. > The new flag allows to control that. > > Signed-off-by: Andreas Gruenbacher <agruen@linbit.com> > ---
I don't understand how maintaining any message boundaries at sender can prevent any middlebox or the receiver to coalesce frames to any boundaries it prefers ?
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