From: Stephan Mueller <smueller@chronox.de>
To: Randy Dunlap <rdunlap@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-crypto@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
linux-api@vger.kernel.org,
"Eric W. Biederman" <ebiederm@xmission.com>,
"Alexander E. Patrakov" <patrakov@gmail.com>,
"Ahmed S. Darwish" <darwish.07@gmail.com>,
"Theodore Y. Ts'o" <tytso@mit.edu>, Willy Tarreau <w@1wt.eu>,
Matthew Garrett <mjg59@srcf.ucam.org>,
Vito Caputo <vcaputo@pengaru.com>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Jan Kara <jack@suse.cz>, Ray Strode <rstrode@redhat.com>,
William Jon McCann <mccann@jhu.edu>,
zhangjs <zachary@baishancloud.com>,
Andy Lutomirski <luto@kernel.org>,
Florian Weimer <fweimer@redhat.com>,
Lennart Poettering <mzxreary@0pointer.de>,
Nicolai Stange <nstange@suse.de>,
"Peter, Matthias" <matthias.peter@bsi.bund.de>,
Marcelo Henrique Cerri <marcelo.cerri@canonical.com>,
Roman Drahtmueller <draht@schaltsekun.de>,
Neil Horman <nhorman@redhat.com>,
Julia Lawall <julia.lawall@inria.fr>,
Dan Carpenter <dan.carpenter@oracle.com>
Subject: Re: [PATCH v28 11/12] LRNG - add interface for gathering of raw entropy
Date: Thu, 16 Jan 2020 07:52:38 +0100 [thread overview]
Message-ID: <5678860.LzzLIogE2D@tauon.chronox.de> (raw)
In-Reply-To: <72a57d93-737a-c6c1-82c4-e14f73054ad5@infradead.org>
Am Donnerstag, 16. Januar 2020, 07:48:20 CET schrieb Randy Dunlap:
Hi Randy,
> On 1/15/20 10:43 PM, Stephan Mueller wrote:
> > Am Donnerstag, 16. Januar 2020, 01:18:18 CET schrieb Randy Dunlap:
> >
> > Hi Randy,
> >
> >> On 1/15/20 2:35 AM, Stephan Müller wrote:
> >>> CC: "Eric W. Biederman" <ebiederm@xmission.com>
> >>> CC: "Alexander E. Patrakov" <patrakov@gmail.com>
> >>> CC: "Ahmed S. Darwish" <darwish.07@gmail.com>
> >>> CC: "Theodore Y. Ts'o" <tytso@mit.edu>
> >>> CC: Willy Tarreau <w@1wt.eu>
> >>> CC: Matthew Garrett <mjg59@srcf.ucam.org>
> >>> CC: Vito Caputo <vcaputo@pengaru.com>
> >>> CC: Andreas Dilger <adilger.kernel@dilger.ca>
> >>> CC: Jan Kara <jack@suse.cz>
> >>> CC: Ray Strode <rstrode@redhat.com>
> >>> CC: William Jon McCann <mccann@jhu.edu>
> >>> CC: zhangjs <zachary@baishancloud.com>
> >>> CC: Andy Lutomirski <luto@kernel.org>
> >>> CC: Florian Weimer <fweimer@redhat.com>
> >>> CC: Lennart Poettering <mzxreary@0pointer.de>
> >>> CC: Nicolai Stange <nstange@suse.de>
> >>> Reviewed-by: Roman Drahtmueller <draht@schaltsekun.de>
> >>> Tested-by: Roman Drahtmüller <draht@schaltsekun.de>
> >>> Tested-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
> >>> Tested-by: Neil Horman <nhorman@redhat.com>
> >>> Signed-off-by: Stephan Mueller <smueller@chronox.de>
> >>> ---
> >>>
> >>> drivers/char/lrng/Kconfig | 16 ++
> >>> drivers/char/lrng/Makefile | 1 +
> >>> drivers/char/lrng/lrng_testing.c | 271 +++++++++++++++++++++++++++++++
> >>> 3 files changed, 288 insertions(+)
> >>> create mode 100644 drivers/char/lrng/lrng_testing.c
> >>>
> >>> diff --git a/drivers/char/lrng/lrng_testing.c
> >>> b/drivers/char/lrng/lrng_testing.c new file mode 100644
> >>> index 000000000000..0e287eccd622
> >>> --- /dev/null
> >>> +++ b/drivers/char/lrng/lrng_testing.c
> >>> @@ -0,0 +1,271 @@
> >>> +// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
> >>> +/*
> >>> + * Linux Random Number Generator (LRNG) Raw entropy collection tool
> >>> + *
> >>> + * Copyright (C) 2019 - 2020, Stephan Mueller <smueller@chronox.de>
> >>> + */
> >>> +
> >>> +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> >>> +
> >>> +#include <linux/atomic.h>
> >>> +#include <linux/bug.h>
> >>> +#include <linux/debugfs.h>
> >>> +#include <linux/module.h>
> >>> +#include <linux/sched.h>
> >>> +#include <linux/sched/signal.h>
> >>> +#include <linux/slab.h>
> >>> +#include <linux/string.h>
> >>> +#include <linux/types.h>
> >>> +#include <linux/uaccess.h>
> >>> +#include <linux/workqueue.h>
> >>> +#include <asm/errno.h>
> >>> +
> >>> +#include "lrng_internal.h"
> >>> +
> >>> +#define LRNG_TESTING_RINGBUFFER_SIZE 1024
> >>> +#define LRNG_TESTING_RINGBUFFER_MASK
(LRNG_TESTING_RINGBUFFER_SIZE - 1)
> >>> +
> >>> +static u32 lrng_testing_rb[LRNG_TESTING_RINGBUFFER_SIZE];
> >>> +static u32 lrng_rb_reader = 0;
> >>> +static u32 lrng_rb_writer = 0;
> >>> +static atomic_t lrng_testing_enabled = ATOMIC_INIT(0);
> >>> +
> >>> +static DECLARE_WAIT_QUEUE_HEAD(lrng_raw_read_wait);
> >>> +static DEFINE_SPINLOCK(lrng_raw_lock);
> >>> +
> >>> +/*
> >>> + * 0 ==> No boot test, gathering of runtime data allowed
> >>> + * 1 ==> Boot test enabled and ready for collecting data, gathering
> >>> runtime + * data is disabled
> >>> + * 2 ==> Boot test completed and disabled, gathering of runtime data is
> >>> + * disabled
> >>> + */
> >>> +static u32 boot_test = 0;
> >>> +module_param(boot_test, uint, 0644);
> >>> +MODULE_PARM_DESC(boot_test, "Enable gathering boot time entropy of the
> >>> first" + " entropy events");
> >>
> >> One line for the string, please.
> >
> > may I ask the question whether this should be done for all lines with
> > printk statements? As checkpatch.pl will complain if you have lines
> > larger than 80 chars and complains about line-broken printk statements, I
> > am always unsure which way to go.
> >
> > All printk statements in the patch series have line-broken printk
> > statements.
> It's for grep-ability of the strings.
> grepping for partial strings would work as is, but then one would need to
> know what partial string to search for.
Ok, I am changing all these strings to one-liners even though checkpatch.pl
will complain.
Thank you.
Ciao
Stephan
next prev parent reply other threads:[~2020-01-16 6:53 UTC|newest]
Thread overview: 162+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-11 18:17 [PATCH v24 00/12] /dev/random - a new approach with full SP800-90B compliance Stephan Müller
2019-11-11 18:18 ` [PATCH v24 01/12] Linux Random Number Generator Stephan Müller
2019-11-11 23:54 ` Thomas Gleixner
2019-11-12 2:25 ` Stephan Müller
2019-11-12 10:16 ` Thomas Gleixner
2019-11-12 22:30 ` kbuild test robot
2019-11-12 23:15 ` Stephan Müller
2019-11-13 0:14 ` kbuild test robot
2019-11-13 0:25 ` Stephan Müller
2019-11-24 4:51 ` Sandy Harris
2019-11-24 9:02 ` Stephan Mueller
2019-11-11 18:19 ` [PATCH v24 02/12] LRNG - allocate one SDRNG instance per NUMA node Stephan Müller
2019-11-11 18:20 ` [PATCH v24 03/12] LRNG - /proc interface Stephan Müller
2019-11-11 18:20 ` [PATCH v24 04/12] LRNG - add switchable DRNG support Stephan Müller
2019-11-11 18:21 ` [PATCH v24 05/12] crypto: DRBG - externalize DRBG functions for LRNG Stephan Müller
2019-11-11 18:21 ` [PATCH v24 06/12] LRNG - add SP800-90A DRBG extension Stephan Müller
2019-11-11 18:22 ` [PATCH v24 07/12] LRNG - add kernel crypto API PRNG extension Stephan Müller
2019-11-11 18:23 ` [PATCH v24 08/12] crypto: provide access to a static Jitter RNG state Stephan Müller
2019-11-11 18:23 ` [PATCH v24 09/12] LRNG - add Jitter RNG fast noise source Stephan Müller
2019-11-11 18:24 ` [PATCH v24 10/12] LRNG - add TRNG support Stephan Müller
2019-11-11 18:26 ` [PATCH v24 11/12] LRNG - add SP800-90B compliant health tests Stephan Müller
2019-11-12 19:58 ` Alexander E. Patrakov
2019-11-12 23:11 ` Stephan Müller
2019-11-13 0:36 ` Stephan Müller
2019-11-13 6:02 ` Alexander E. Patrakov
2019-11-14 1:46 ` Stephan Müller
2019-11-11 18:26 ` [PATCH v24 12/12] LRNG - add interface for gathering of raw entropy Stephan Müller
2019-11-12 20:55 ` kbuild test robot
2019-11-12 23:13 ` Stephan Müller
2019-11-12 13:23 ` [PATCH v24 00/12] /dev/random - a new approach with full SP800-90B compliance Florian Weimer
2019-11-12 22:43 ` Stephan Müller
2019-11-12 15:33 ` Andy Lutomirski
2019-11-12 23:03 ` Stephan Müller
2019-11-12 23:26 ` Stephan Müller
2019-11-13 4:24 ` Stephan Müller
2019-11-13 4:48 ` Andy Lutomirski
2019-11-13 12:16 ` Stephan Müller
2019-11-16 9:32 ` [PATCH v25 00/12] /dev/random - a new approach with full SP800-90B Stephan Müller
2019-11-16 9:33 ` [PATCH v25 01/12] Linux Random Number Generator Stephan Müller
2019-11-16 11:25 ` Thomas Gleixner
2019-11-17 10:30 ` Stephan Müller
2019-11-16 18:13 ` Nicolai Stange
2019-11-17 11:01 ` Stephan Müller
2019-11-16 9:33 ` [PATCH v25 02/12] LRNG - allocate one SDRNG instance per NUMA node Stephan Müller
2019-11-16 9:34 ` [PATCH v25 03/12] LRNG - /proc interface Stephan Müller
2019-11-16 16:39 ` Andy Lutomirski
2019-11-17 12:16 ` Stephan Müller
2019-11-19 10:06 ` Andy Lutomirski
2019-11-19 10:55 ` Stephan Mueller
2019-11-19 17:40 ` Andy Lutomirski
2019-11-16 23:36 ` Eric W. Biederman
2019-11-17 11:37 ` Stephan Müller
2019-11-16 9:34 ` [PATCH v25 04/12] LRNG - add switchable DRNG support Stephan Müller
2019-11-16 9:35 ` [PATCH v25 05/12] crypto: DRBG - externalize DRBG functions for LRNG Stephan Müller
2019-11-16 9:35 ` [PATCH v25 06/12] LRNG - add SP800-90A DRBG extension Stephan Müller
2019-11-16 9:35 ` [PATCH v25 07/12] LRNG - add kernel crypto API PRNG extension Stephan Müller
2019-11-16 9:36 ` [PATCH v25 08/12] crypto: provide access to a static Jitter RNG state Stephan Müller
2019-11-16 9:36 ` [PATCH v25 09/12] LRNG - add Jitter RNG fast noise source Stephan Müller
2019-11-20 13:33 ` Neil Horman
2019-11-20 20:07 ` Stephan Müller
2019-11-21 14:19 ` Neil Horman
2019-11-21 14:33 ` Stephan Mueller
2019-11-16 9:37 ` [PATCH v25 10/12] LRNG - add TRNG support Stephan Müller
2019-11-16 16:09 ` Andy Lutomirski
2019-11-17 11:10 ` Stephan Müller
2019-11-19 10:07 ` Andy Lutomirski
2019-11-19 10:46 ` Stephan Mueller
2019-11-19 12:41 ` Greg Kroah-Hartman
2019-11-20 8:58 ` Stephan Müller
2019-11-20 9:55 ` Alexander E. Patrakov
2019-11-20 13:29 ` Greg Kroah-Hartman
2019-11-20 19:51 ` Stephan Müller
2019-11-20 19:57 ` Alexander E. Patrakov
2019-11-20 20:32 ` Greg Kroah-Hartman
2019-11-21 13:06 ` Stephan Müller
2019-11-16 9:37 ` [PATCH v25 11/12] LRNG - add SP800-90B compliant health tests Stephan Müller
2019-11-16 9:38 ` [PATCH v25 12/12] LRNG - add interface for gathering of raw entropy Stephan Müller
2019-11-16 16:51 ` Andy Lutomirski
2019-11-17 22:55 ` Stephan Müller
2019-11-19 10:04 ` Andy Lutomirski
2019-11-19 17:17 ` Randy Dunlap
2019-11-20 9:01 ` Stephan Müller
2019-11-21 12:18 ` Nicolai Stange
2019-11-21 15:18 ` Stephan Müller
2019-11-23 20:08 ` [PATCH v26 00/12] /dev/random - a new approach with full SP800-90B Stephan Müller
2019-11-23 20:10 ` [PATCH v26 01/12] Linux Random Number Generator Stephan Müller
2019-11-24 22:44 ` kbuild test robot
2019-11-25 6:29 ` Stephan Mueller
2019-11-23 20:10 ` [PATCH v26 02/12] LRNG - allocate one SDRNG instance per NUMA node Stephan Müller
2019-11-23 20:11 ` [PATCH v26 03/12] LRNG - sysctls and /proc interface Stephan Müller
2019-11-23 20:11 ` [PATCH v26 04/12] LRNG - add switchable DRNG support Stephan Müller
2019-11-23 20:31 ` [PATCH v26 05/12] crypto: DRBG - externalize DRBG functions for LRNG Stephan Müller
2019-11-23 20:32 ` [PATCH v26 06/12] LRNG - add SP800-90A DRBG extension Stephan Müller
2019-11-23 20:32 ` [PATCH v26 07/12] LRNG - add kernel crypto API PRNG extension Stephan Müller
2019-11-23 20:33 ` [PATCH v26 08/12] crypto: provide access to a static Jitter RNG state Stephan Müller
2019-11-23 20:34 ` [PATCH v26 09/12] LRNG - add Jitter RNG fast noise source Stephan Müller
2019-11-23 20:34 ` [PATCH v26 10/12] LRNG - add TRNG support Stephan Müller
2019-11-23 20:34 ` [PATCH v26 11/12] LRNG - add SP800-90B compliant health tests Stephan Müller
2019-11-23 20:35 ` [PATCH v26 12/12] LRNG - add interface for gathering of raw entropy Stephan Müller
2020-01-09 8:29 ` [PATCH v27 00/12] /dev/random - a new approach with full SP800-90B Stephan Müller
2020-01-09 8:30 ` [PATCH v27 01/12] Linux Random Number Generator Stephan Müller
2020-01-16 6:09 ` kbuild test robot
2020-01-16 6:41 ` Stephan Mueller
2020-01-09 8:31 ` [PATCH v27 02/12] LRNG - allocate one DRNG instance per NUMA node Stephan Müller
2020-01-09 8:31 ` [PATCH v27 03/12] LRNG - sysctls and /proc interface Stephan Müller
2020-01-09 8:32 ` [PATCH v27 04/12] LRNG - add switchable DRNG support Stephan Müller
2020-01-11 7:09 ` kbuild test robot
2020-01-12 10:12 ` Stephan Müller
2020-01-09 8:32 ` [PATCH v27 05/12] crypto: DRBG - externalize DRBG functions for LRNG Stephan Müller
2020-01-09 8:32 ` [PATCH v27 06/12] LRNG - add SP800-90A DRBG extension Stephan Müller
2020-01-09 8:33 ` [PATCH v27 07/12] LRNG - add kernel crypto API PRNG extension Stephan Müller
2020-01-09 8:33 ` [PATCH v27 08/12] crypto: provide access to a static Jitter RNG state Stephan Müller
2020-01-09 8:34 ` [PATCH v27 09/12] LRNG - add Jitter RNG fast noise source Stephan Müller
2020-01-10 0:24 ` Randy Dunlap
2020-01-10 7:45 ` Stephan Mueller
2020-01-09 8:34 ` [PATCH v27 10/12] LRNG - add SP800-90B compliant health tests Stephan Müller
2020-01-10 0:20 ` Randy Dunlap
2020-01-10 8:27 ` Stephan Mueller
2020-01-09 8:35 ` [PATCH v27 11/12] LRNG - add interface for gathering of raw entropy Stephan Müller
2020-01-09 8:35 ` [PATCH v27 12/12] LRNG - add power-on and runtime self-tests Stephan Müller
2020-01-10 0:22 ` Randy Dunlap
2020-01-10 7:48 ` Stephan Mueller
2020-01-13 10:39 ` Dan Carpenter
2020-01-13 10:46 ` Stephan Mueller
2020-01-15 10:31 ` [PATCH v28 00/12] /dev/random - a new approach with full SP800-90B Stephan Müller
2020-01-15 10:31 ` [PATCH v28 01/12] Linux Random Number Generator Stephan Müller
2020-01-16 0:11 ` Randy Dunlap
2020-01-16 7:22 ` Stephan Mueller
2020-01-15 10:32 ` [PATCH v28 02/12] LRNG - allocate one DRNG instance per NUMA node Stephan Müller
2020-01-15 10:32 ` [PATCH v28 03/12] LRNG - sysctls and /proc interface Stephan Müller
2020-01-15 10:32 ` [PATCH v28 04/12] LRNG - add switchable DRNG support Stephan Müller
2020-01-15 10:33 ` [PATCH v28 05/12] crypto: DRBG - externalize DRBG functions for LRNG Stephan Müller
2020-01-15 10:33 ` [PATCH v28 06/12] LRNG - add SP800-90A DRBG extension Stephan Müller
2020-01-16 0:14 ` Randy Dunlap
2020-01-16 6:55 ` Stephan Mueller
2020-01-15 10:34 ` [PATCH v28 07/12] LRNG - add kernel crypto API PRNG extension Stephan Müller
2020-01-16 0:15 ` Randy Dunlap
2020-01-16 6:54 ` Stephan Mueller
2020-01-15 10:34 ` [PATCH v28 08/12] crypto: provide access to a static Jitter RNG state Stephan Müller
2020-01-15 10:34 ` [PATCH v28 09/12] LRNG - add Jitter RNG fast noise source Stephan Müller
2020-01-16 0:17 ` Randy Dunlap
2020-01-16 6:51 ` Stephan Mueller
2020-01-15 10:35 ` [PATCH v28 10/12] LRNG - add SP800-90B compliant health tests Stephan Müller
2020-01-15 10:35 ` [PATCH v28 11/12] LRNG - add interface for gathering of raw entropy Stephan Müller
2020-01-16 0:18 ` Randy Dunlap
2020-01-16 6:43 ` Stephan Mueller
2020-01-16 6:48 ` Randy Dunlap
2020-01-16 6:52 ` Stephan Mueller [this message]
2020-01-15 10:36 ` [PATCH v28 12/12] LRNG - add power-on and runtime self-tests Stephan Müller
2020-01-19 21:12 ` [PATCH v29 00/12] /dev/random - a new approach with full SP800-90B Stephan Müller
2020-01-19 21:13 ` [PATCH v29 01/12] Linux Random Number Generator Stephan Müller
2020-01-19 21:13 ` [PATCH v29 02/12] LRNG - allocate one DRNG instance per NUMA node Stephan Müller
2020-01-19 21:14 ` [PATCH v29 03/12] LRNG - sysctls and /proc interface Stephan Müller
2020-01-19 21:14 ` [PATCH v29 04/12] LRNG - add switchable DRNG support Stephan Müller
2020-01-19 21:15 ` [PATCH v29 05/12] crypto: DRBG - externalize DRBG functions for LRNG Stephan Müller
2020-01-19 21:16 ` [PATCH v29 06/12] LRNG - add SP800-90A DRBG extension Stephan Müller
2020-01-19 21:16 ` [PATCH v29 07/12] LRNG - add kernel crypto API PRNG extension Stephan Müller
2020-01-19 21:17 ` [PATCH v29 08/12] crypto: provide access to a static Jitter RNG state Stephan Müller
2020-01-19 21:18 ` [PATCH v29 09/12] LRNG - add Jitter RNG fast noise source Stephan Müller
2020-01-19 21:18 ` [PATCH v29 10/12] LRNG - add SP800-90B compliant health tests Stephan Müller
2020-01-19 21:19 ` [PATCH v29 11/12] LRNG - add interface for gathering of raw entropy Stephan Müller
2020-01-19 21:20 ` [PATCH v29 12/12] LRNG - add power-on and runtime self-tests Stephan Müller
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