Commit Graph

123 Commits

Author SHA1 Message Date
Konstantin Belousov
27007c6576 Put the aesni_cipher_setup() and aesni_cipher_process() functions into
the file which is compiled with SSE disabled.  The functions set up
the FPU context for kernel, and compiler optimizations which could
lead to use of XMM registers before the fpu_kern_enter(9) is called or
after fpu_kern_leave(9), panic the machine.

Discussed with:	jmg
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2014-06-24 06:55:49 +00:00
Konstantin Belousov
633034fe0e Add FPU_KERN_KTHR flag to fpu_kern_enter(9), which avoids saving FPU
context into memory for the kernel threads which called
fpu_kern_thread(9).  This allows the fpu_kern_enter() callers to not
check for is_fpu_kern_thread() to get the optimization.

Apply the flag to padlock(4) and aesni(4).  In aesni_cipher_process(),
do not leak FPU context state on error.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2014-06-23 07:37:54 +00:00
Warner Losh
3bdf775801 NO_MAN= has been deprecated in favor of MAN= for some time, go ahead
and finish the job. ncurses is now the only Makefile in the tree that
uses it since it wasn't a simple mechanical change, and will be
addressed in a future commit.
2014-04-13 05:21:56 +00:00
John-Mark Gurney
8083f14fc2 replace the kernel's version w/ cperciva's implementation... In all
my tests, it is faster ~20%, even on an old IXP425 533MHz it is ~45%
faster...  This is partly due to loop unrolling, so the code size does
significantly increase...  I do plan on committing a version that
rolls up the loops again for smaller code size for embedded systems
where size is more important than absolute performance (it'll save ~6k
code)...

The kernel implementation is now shared w/ userland's libcrypt and
libmd...

We drop support for sha256 from sha2.c, so now sha2.c only contains
sha384 and sha512...

Reviewed by:	secteam@
2014-03-16 01:43:23 +00:00
John-Mark Gurney
97447ea423 copy these files from lib/libmd in preperation for moving these files
into the kernel...
2014-03-16 00:57:26 +00:00
John-Mark Gurney
9164a239ea fix broken style(9) in r258399
Pointed out by:	brd
2013-11-23 00:28:18 +00:00
John-Mark Gurney
23fc6e1652 flag that the aesni driver is sync... This means we don't waste a
context switch just to call the done callback...  On my machine, this
improves geli/gzero decrypt performance by ~27% from 550MB/sec to
~700MB/sec...

MFC after:	3 days
2013-11-20 20:25:27 +00:00
John-Mark Gurney
038ffd3e43 make it so that from/to can be missaligned as it can happen (the geli
regression manages to do it)...  We use a packed struct to coerce
gcc/clang into producing unaligned loads (there is not packed pointer
attribute, otherwise this would be easier)...

use _storeu_ and _loadu_ when using the structure is overkill...

be better at using types properly...  Since we allocate our own key
schedule and make sure it's aligned, use the __m128i type in various
arguments to functions...

clang ignores __aligned on prototypes and gcc errors on them, leave them
in comments to document that these function arguments are require to be
aligned...

about all that changes is movdqa -> movdqu from reading the diff of the
disassembly output...

Noticed by:	symbolics at gmx.com
MFC after:	3 days
2013-11-06 19:14:49 +00:00
John-Mark Gurney
ff6c7bf5ca Use the fact that the AES-NI instructions can be pipelined to improve
performance... Use SSE2 instructions for calculating the XTS tweek
factor...  Let the compiler do more work and handle register allocation
by using intrinsics, now only the key schedule is in assembly...

Replace .byte hard coded instructions w/ the proper instructions now
that both clang and gcc support them...

On my machine, pulling the code to userland I saw performance go from
~150MB/sec to 2GB/sec in XTS mode.  GELI on GNOP saw a more modest
increase of about 3x due to other system overhead (geom and
opencrypto)...

These changes allow almost full disk io rate w/ geli...

Reviewed by:	-current, -security
Thanks to:	Mike Hamburg for the XTS tweek algorithm
2013-09-03 18:31:23 +00:00
Andre Oppermann
bf0354c0f2 Fix const propagation issues to make GCC happy.
Submitted by:	Michael Butler <imb@protected-networks.net>
2013-07-11 16:27:11 +00:00
Andre Oppermann
6856398eab SipHash is a cryptographically strong pseudo-random function (a.k.a. keyed
hash function) optimized for speed on short messages returning a 64bit hash/
digest value.

SipHash is simpler and much faster than other secure MACs and competitive
in speed with popular non-cryptographic hash functions.  It uses a 128-bit
key without the hidden cost of a key expansion step.  SipHash iterates a
simple round function consisting of four additions, four xors, and six
rotations, interleaved with xors of message blocks for a pre-defined number
of compression and finalization rounds.  The absence of  secret load/store
addresses or secret branch conditions avoid timing attacks.  No state is
shared between messages.  Hashing is deterministic and doesn't use nonces.
It is not susceptible to length extension attacks.

Target applications include network traffic authentication, message
authentication (MAC) and hash-tables protection against hash-flooding
denial-of-service attacks.

The number of update/finalization rounds is defined during initialization:

 SipHash24_Init() for the fast and reasonable strong version.
 SipHash48_Init() for the strong version (half as fast).

SipHash usage is similar to other hash functions:

 struct SIPHASH_CTX ctx;
 char *k = "16bytes long key"
 char *s = "string";
 uint64_t h = 0;
 SipHash24_Init(&ctx);
 SipHash_SetKey(&ctx, k);
 SipHash_Update(&ctx, s, strlen(s));
 SipHash_Final(&h, &ctx);  /* or */
 h = SipHash_End(&ctx);    /* or */
 h = SipHash24(&ctx, k, s, strlen(s));

It was designed by Jean-Philippe Aumasson and Daniel J. Bernstein and
is described in the paper "SipHash: a fast short-input PRF", 2012.09.18:
 https://131002.net/siphash/siphash.pdf
 Permanent ID: b9a943a805fbfc6fde808af9fc0ecdfa

Implemented by:	andre (based on the paper)
Reviewed by:	cperciva
2013-07-11 14:18:38 +00:00
Xin LI
76a207c2b9 Sync with KAME.
MFC after:	1 month
2013-07-09 22:04:35 +00:00
Robert Millan
f19122edbf Allow assert() to operate correctly when building userland code. 2013-07-09 10:27:26 +00:00
Pawel Jakub Dawidek
45b56a6ba2 When porting XTS-related code from OpenBSD I forgot to update copyright (only
OpenBSD was credited in one of two commits). Fix it.

Reported by:	Theo de Raadt <deraadt@cvs.openbsd.org>
Reviewed by:	Damien Miller <djm@mindrot.org>
2013-02-20 22:59:53 +00:00
Kevin Lo
9823d52705 Revert previous commit...
Pointyhat to:	kevlo (myself)
2012-10-10 08:36:38 +00:00
Kevin Lo
a10cee30c9 Prefer NULL over 0 for pointers 2012-10-09 08:27:40 +00:00
Konstantin Belousov
8c6f8f3d5b Add support for the extended FPU states on amd64, both for native
64bit and 32bit ABIs.  As a side-effect, it enables AVX on capable
CPUs.

In particular:

- Query the CPU support for XSAVE, list of the supported extensions
  and the required size of FPU save area. The hw.use_xsave tunable is
  provided for disabling XSAVE, and hw.xsave_mask may be used to
  select the enabled extensions.

- Remove the FPU save area from PCB and dynamically allocate the
  (run-time sized) user save area on the top of the kernel stack,
  right above the PCB. Reorganize the thread0 PCB initialization to
  postpone it after BSP is queried for save area size.

- The dumppcb, stoppcbs and susppcbs now do not carry the FPU state as
  well. FPU state is only useful for suspend, where it is saved in
  dynamically allocated suspfpusave area.

- Use XSAVE and XRSTOR to save/restore FPU state, if supported and
  enabled.

- Define new mcontext_t flag _MC_HASFPXSTATE, indicating that
  mcontext_t has a valid pointer to out-of-struct extended FPU
  state. Signal handlers are supplied with stack-allocated fpu
  state. The sigreturn(2) and setcontext(2) syscall honour the flag,
  allowing the signal handlers to inspect and manipilate extended
  state in the interrupted context.

- The getcontext(2) never returns extended state, since there is no
  place in the fixed-sized mcontext_t to place variable-sized save
  area. And, since mcontext_t is embedded into ucontext_t, makes it
  impossible to fix in a reasonable way.  Instead of extending
  getcontext(2) syscall, provide a sysarch(2) facility to query
  extended FPU state.

- Add ptrace(2) support for getting and setting extended state; while
  there, implement missed PT_I386_{GET,SET}XMMREGS for 32bit binaries.

- Change fpu_kern KPI to not expose struct fpu_kern_ctx layout to
  consumers, making it opaque. Internally, struct fpu_kern_ctx now
  contains a space for the extended state. Convert in-kernel consumers
  of fpu_kern KPI both on i386 and amd64.

First version of the support for AVX was submitted by Tim Bird
<tim.bird am sony com> on behalf of Sony. This version was written
from scratch.

Tested by:	pho (previous version), Yamagi Burmeister <lists yamagi org>
MFC after:	1 month
2012-01-21 17:45:27 +00:00
Pawel Jakub Dawidek
14a0d24607 Update Copyright.
MFC after:	3 days
2011-10-27 14:15:26 +00:00
Pawel Jakub Dawidek
5fa1b35081 Improve AES-NI performance for AES-XTS:
- Operate on uint64_t types when doing XORing, etc. instead of uint8_t.
- Don't bzero() temporary block for every AES block. Do it once for entire
  data block.
- AES-NI is available only on little endian architectures. Simplify code
  that takes block number from IV.

Benchmarks:

Memory-backed md(4) device, software AES-XTS, 4kB sector:

	# dd if=/dev/md0.eli bs=1m
	59.61MB/s

Memory-backed md(4) device, old AES-NI AES-XTS, 4kB sector:

	# dd if=/dev/md0.eli bs=1m
	97.29MB/s

Memory-backed md(4) device, new AES-NI AES-XTS, 4kB sector:

	# dd if=/dev/md0.eli bs=1m
	221.26MB/s

127% performance improvement between old and new code.

Harddisk, raw speed:

	# dd if=/dev/ada0 bs=1m
	137.63MB/s

Harddisk, software AES-XTS, 4kB sector:

	# dd if=/dev/ada0.eli bs=1m
	47.83MB/s (34% of raw disk speed)

Harddisk, old AES-NI AES-XTS, 4kB sector:

	# dd if=/dev/ada0.eli bs=1m
	68.33MB/s (49% of raw disk speed)

Harddisk, new AES-NI AES-XTS, 4kB sector:

	# dd if=/dev/ada0.eli bs=1m
	108.35MB/s (78% of raw disk speed)

58% performance improvement between old and new code.

As a side-note, GELI with AES-NI using AES-CBC can achive native disk speed.

MFC after:	3 days
2011-10-27 14:07:57 +00:00
Konstantin Belousov
93ed70f9b4 Fix a bug in the result of manual assembly.
Reported by:	Stefan Grundmann <sg2342 googlemail com>
PR:	kern/155118
MFC after:	3 days
2011-03-02 14:56:58 +00:00
Rebecca Cran
3283511248 Make private functions static.
PR:		kern/43611
Submitted by:	Matt Emmerton <matt at gsicomp.on.ca>
Reviewed by:	kib
MFC after:	3 days
2011-02-21 16:21:43 +00:00
Konstantin Belousov
17ca6d98e1 Remove DEBUG sections.
MFC after:	3 days
2010-11-27 15:41:44 +00:00
Konstantin Belousov
3e07b6217f MFaesni r215427:
Only save FPU context when not executing in the context of the crypto
thread.

Tested by:	Mike Tancsa
MFC after:	1 week
2010-11-26 14:35:20 +00:00
Konstantin Belousov
1563ee36b9 Only save FPU context when not executing in the context of the crypto
thread.

Tested by:	Mike Tancsa
2010-11-17 16:17:15 +00:00
Dimitry Andric
235610273e Change two missed instances of 'retq' in aeskeys_i386.S to 'retl', which
makes it possible to assemble this file with gas from newer binutils.

Reviewed by:	kib
2010-10-13 17:55:53 +00:00
Pawel Jakub Dawidek
c979bd5e06 Fix two copy&paste bugs.
MFC after:	2 weeks
2010-09-25 10:32:52 +00:00
Pawel Jakub Dawidek
ac970319ff Add support for CRYPTO_AES_XTS.
MFC after:	1 week
2010-09-23 11:57:25 +00:00
Pawel Jakub Dawidek
30bd3bb07b Add support for CRD_F_KEY_EXPLICIT flag.
MFC after:	1 week
2010-09-23 11:46:53 +00:00
Pawel Jakub Dawidek
745eb0ccb6 Simplify code a bit.
MFC after:	1 week
2010-09-23 11:26:38 +00:00
Konstantin Belousov
5f270659fd Crypto(4) driver for AESNI.
The aeskeys_{amd64,i386}.S content was mostly obtained from OpenBSD,
no objections to the license from core.

Hardware provided by:	Sentex Communications
Tested by:	fabient, pho (previous versions)
MFC after:	1 month
2010-07-23 11:00:46 +00:00
Konstantin Belousov
04c49e68de Use the fpu_kern_enter() interface to properly separate usermode FPU
context from in-kernel execution of padlock instructions and to handle
spurious FPUDNA exceptions that sometime are raised when doing padlock
calculations.

Globally mark crypto(9) kthread as using FPU.

Reviewed by:	pjd
Hardware provided by:	Sentex Communications
Tested by:	  pho
PR:    amd64/135014
MFC after:    1 month
2010-06-05 16:00:53 +00:00
VANHULLEBUS Yvan
081b9301bf Changed to M_NOWAIT when reallocing psc_buf in padlock_sha_update(),
as we already hold the non sleepable crypto_driver_mutex.

Approved by:	gnn(mentor)
Obtained from:	NETASQ
MFC after:	2 weeks
2009-05-27 09:52:12 +00:00
Warner Losh
a4958494e8 identify routine takes driver_t *, not device_t *. 2009-02-05 19:30:28 +00:00
Jung-uk Kim
9045c73682 Connect padlock(4) to amd64 build for VIA Nano processors. 2009-01-12 19:23:46 +00:00
Alexander Motin
f2831a952d Avoid 256 integer divisions per rc4_init() call. Replace it with using
separate index variable.

It gives more then double rc4_init() performance increase on tested i386 P4.
It also gives about 15% speedup to PPTP VPN with stateless MPPE encryption
(by ng_mppc) which calls rc4_init() for every packet.
2008-12-16 13:58:37 +00:00
Philip Paeps
2bc989be4f Fix a potential NULL-pointer dereference in padlock(4).
Spotted by:	Coverity (via pjd)
MFC after:	1 week
2008-11-17 19:00:36 +00:00
Pawel Jakub Dawidek
b5207ec64a Simplify session selection/allocation. 2008-08-09 20:01:01 +00:00
Pawel Jakub Dawidek
ec7993f8b0 - Fix freeing session on newsession failure.
- Update copyright years.
2008-08-09 19:48:59 +00:00
Pawel Jakub Dawidek
f422e90330 Implify sessions freeing loop. 2008-08-09 19:47:19 +00:00
Pawel Jakub Dawidek
a05071e803 We don't have to drop a lock around malloc(M_NOWAIT). 2008-08-09 19:45:43 +00:00
Pawel Jakub Dawidek
eadca5921d When freeing session, restore its ID after zeroing memory.
Bug tracked down by:	Patrick Lamaiziere <patfbsd@davenulle.org>
2008-08-09 19:43:44 +00:00
Pawel Jakub Dawidek
7d8b54b5b5 Sessions in-use are at the end of the queue, so use TAILQ_FOREACH_REVERSE()
when looking for them.

Idea from:	Patrick Lamaiziere <patfbsd@davenulle.org>
2008-08-09 19:42:37 +00:00
Pawel Jakub Dawidek
48aadb632b Convert lock that protects sessions list from a mutex to a rwlock.
Now we can use read lock in fast path (padlock_process()).
2008-07-20 07:34:00 +00:00
Maxim Sobolev
dd8c2454a8 Make test00 compilable again. 2008-01-15 18:34:47 +00:00
George V. Neville-Neil
b2630c2934 Commit the change from FAST_IPSEC to IPSEC. The FAST_IPSEC
option is now deprecated, as well as the KAME IPsec code.
What was FAST_IPSEC is now IPSEC.

Approved by: re
Sponsored by: Secure Computing
2007-07-03 12:13:45 +00:00
George V. Neville-Neil
559d3390d0 Integrate the Camellia Block Cipher. For more information see RFC 4132
and its bibliography.

Submitted by:   Tomoyuki Okazaki <okazaki at kick dot gr dot jp>
MFC after:      1 month
2007-05-09 19:37:02 +00:00
Sam Leffler
6810ad6f2a Overhaul driver/subsystem api's:
o make all crypto drivers have a device_t; pseudo drivers like the s/w
  crypto driver synthesize one
o change the api between the crypto subsystem and drivers to use kobj;
  cryptodev_if.m defines this api
o use the fact that all crypto drivers now have a device_t to add support
  for specifying which of several potential devices to use when doing
  crypto operations
o add new ioctls that allow user apps to select a specific crypto device
  to use (previous ioctls maintained for compatibility)
o overhaul crypto subsystem code to eliminate lots of cruft and hide
  implementation details from drivers
o bring in numerous fixes from Michale Richardson/hifn; mostly for
  795x parts
o add an optional mechanism for mmap'ing the hifn 795x public key h/w
  to user space for use by openssl (not enabled by default)
o update crypto test tools to use new ioctl's and add cmd line options
  to specify a device to use for tests

These changes will also enable much future work on improving the core
crypto subsystem; including proper load balancing and interposing code
between the core and drivers to dispatch small operations to the s/w
driver as appropriate.

These changes were instigated by the work of Michael Richardson.

Reviewed by:	pjd
Approved by:	re
2007-03-21 03:42:51 +00:00
Kevin Lo
4b29020487 Initialize T1 to silent gcc warning.
Approved by: cognet
2006-10-22 02:19:33 +00:00
Pawel Jakub Dawidek
ef7c47775f Less magic.
MFC after:	3 days
2006-09-15 10:44:55 +00:00
Alexander Kabaev
bcbd3d69bf GCC 3.4.6 gets confused on this file and produces bogus warning.
Shut it up.
2006-08-26 21:48:00 +00:00