From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: David Miller <davem@davemloft.net>
Cc: johaahn@gmail.com, netdev@vger.kernel.org
Subject: Re: [PATCH] sendfile() and UDP socket
Date: Mon, 22 Sep 2008 04:21:57 +0400 [thread overview]
Message-ID: <20080922002153.GC1878@2ka.mipt.ru> (raw)
In-Reply-To: <20080921.010458.216237442.davem@davemloft.net>
On Sun, Sep 21, 2008 at 01:04:58AM -0700, David Miller (davem@davemloft.net) wrote:
> Applications which work over datagram protocols must perform their own
> segmentation. It is not like doing a send over a stream protocol like
> TCP, where you can use whatever length you want for send calls and
> segmentation is done for the application.
But isn't the whole idea of the sendfile() is to send a file no matter
what underlying media is?
> If you look, this is what things like NFS using SUNRPC over UDP do.
> They have a transmission unit for the data transfer and use that for
> each "send".
That's maybe because udp_sendpage() does not support sending pending
data if new packet is too big to attach?
--
Evgeniy Polyakov
next prev parent reply other threads:[~2008-09-22 0:23 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-14 10:25 [PATCH] sendfile() and UDP socket Johann Baudy
2008-09-16 4:17 ` Simon Horman
2008-09-16 4:24 ` Simon Horman
2008-09-16 12:01 ` Hirokazu Takahashi
2008-09-18 17:31 ` Rémi Denis-Courmont
2008-09-19 12:28 ` Hirokazu Takahashi
2008-09-19 13:14 ` Rémi Denis-Courmont
2008-09-21 8:04 ` David Miller
2008-09-22 0:21 ` Evgeniy Polyakov [this message]
2008-09-22 0:44 ` David Miller
2008-09-22 1:08 ` Evgeniy Polyakov
2008-09-22 2:07 ` David Miller
2008-09-22 4:19 ` Evgeniy Polyakov
2008-09-22 4:27 ` David Miller
2008-09-22 4:40 ` Evgeniy Polyakov
2008-09-22 5:06 ` David Miller
2008-09-22 5:49 ` Evgeniy Polyakov
2008-09-22 6:54 ` David Miller
2008-09-22 7:04 ` Evgeniy Polyakov
2008-09-23 4:54 ` Herbert Xu
2008-09-23 6:27 ` Evgeniy Polyakov
2008-09-23 7:01 ` Herbert Xu
2008-09-23 7:07 ` Evgeniy Polyakov
2008-09-24 4:53 ` Bill Fink
[not found] ` <7e0dd21a0810140009k49c8876ax66f744d0a3a4931b@mail.gmail.com>
2008-10-14 7:10 ` Johann Baudy
2008-09-25 13:03 ` Using skb_get() to recycle skbs Ram.Natarajan
2008-09-25 14:28 ` Evgeniy Polyakov
-- strict thread matches above, loose matches on Subject: below --
2008-09-10 12:39 [PATCH] sendfile() and UDP socket Johann Baudy
2008-09-10 20:16 ` David Miller
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