From: Randy Dunlap <randy.dunlap@oracle.com>
To: Ben Greear <greearb@candelatech.com>
Cc: NetDev <netdev@vger.kernel.org>
Subject: Re: How to grab a block of binary data w/out using ioctls?
Date: Mon, 23 Oct 2006 21:54:48 -0700 [thread overview]
Message-ID: <20061023215448.f4f6c95a.randy.dunlap@oracle.com> (raw)
In-Reply-To: <453D61E8.8020400@candelatech.com>
On Mon, 23 Oct 2006 17:44:24 -0700 Ben Greear wrote:
> Since IOCTLs are out of favor these days, what would be
> a preferred way to get a block of binary data out of the
> kernel?
>
> I just want to grab a stats structure (well-aligned 32 and 64-bit counters
> and fixed-length strings) for a pktgen interface.
>
> Can you do this with seq-files somehow?
seq-files just use printk() for text output. Not well-suited
to binary output.
Similarly, sysfs is desirable in some circumstances, but
not for blocks of binary data.
ioctls or netlink or debugfs or relay output (see how blktrace
uses relay output) are your choices (I may have missed some. :)
ioctls can be OK for some purposes. If you want to avoid them,
try debugfs or relay. (I haven't looked at debugfs very much;
it may be more text-oriented also...)
---
~Randy
next prev parent reply other threads:[~2006-10-24 4:53 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-24 0:44 How to grab a block of binary data w/out using ioctls? Ben Greear
2006-10-24 4:54 ` Randy Dunlap [this message]
2006-10-24 5:00 ` Jeff Garzik
2006-10-24 5:04 ` Randy.Dunlap
2006-10-25 2:25 ` Ben Greear
2006-10-25 2:47 ` Jeff Garzik
2006-10-25 4:35 ` Randy Dunlap
2006-10-25 4:46 ` Jeff Garzik
2006-10-25 4:52 ` Randy.Dunlap
2006-10-25 5:01 ` Jeff Garzik
2006-10-25 5:07 ` Randy.Dunlap
2006-10-25 16:30 ` Ben Greear
2006-10-25 12:51 ` Hagen Paul Pfeifer
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