From: Evgeniy Polyakov <zbr@ioremap.net>
To: bert hubert <bert.hubert@netherlabs.nl>,
"H. Willstrand" <h.willstrand@gmail.com>,
netdev@vger.kernel.org
Subject: Re: sendfile()? Re: SO_LINGER dead: I get an immediate RST on 2.6.24?
Date: Mon, 12 Jan 2009 02:18:59 +0300 [thread overview]
Message-ID: <20090111231859.GA8309@ioremap.net> (raw)
In-Reply-To: <20090111230824.GB10848@outpost.ds9a.nl>
On Mon, Jan 12, 2009 at 12:08:24AM +0100, bert hubert (bert.hubert@netherlabs.nl) wrote:
> I fully understand. Sometimes I have to talk to stupid devices though. What
> I do find is the TCP_INFO ioctl, which offers this field in struct tcp_info:
>
> __u32 tcpi_unacked;
>
> Which comes from:
>
> struct tcp_sock {
> ...
> u32 packets_out; /* Packets which are "in flight" */
> ...
> }
>
> If this becomes 0, perhaps this might tell me everything I sent was acked?
0 means that there are noin-flight packets, which is effectively number
of unacked packets. So if your application waits for this field to
become zero, it will wait for all sent packets to be acked.
--
Evgeniy Polyakov
next prev parent reply other threads:[~2009-01-11 23:19 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-11 21:23 SO_LINGER dead: I get an immediate RST on 2.6.24? bert hubert
2009-01-11 22:08 ` H. Willstrand
2009-01-11 22:45 ` sendfile()? " bert hubert
2009-01-11 22:54 ` Evgeniy Polyakov
2009-01-11 23:08 ` bert hubert
2009-01-11 23:18 ` Evgeniy Polyakov [this message]
2009-01-12 4:50 ` Bill Fink
2009-01-12 9:18 ` Ilpo Järvinen
2009-01-13 5:31 ` Bill Fink
2009-02-13 17:02 ` Jeremy Jackson
2009-02-20 18:10 ` Bill Fink
-- strict thread matches above, loose matches on Subject: below --
2009-01-13 6:32 Herbert Xu
2009-01-13 6:56 ` Bill Fink
2009-01-13 7:01 ` Herbert Xu
2009-01-14 7:43 ` Bill Fink
2009-01-14 8:29 ` Herbert Xu
2009-01-14 9:05 ` Bill Fink
2009-01-14 11:30 ` Herbert Xu
2009-01-15 6:33 ` Bill Fink
2009-01-13 7:06 ` Rick Jones
2009-01-14 8:05 ` Bill Fink
2009-01-14 8:08 ` Rick Jones
2009-01-14 8:32 ` Bill Fink
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