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History log of /src/sys/dev/ic/lancevar.h
RevisionDateAuthorComments
 1.16  13-Apr-2015  riastradh Convert sys/dev to use <sys/rndsource.h>.
 1.15  02-Feb-2012  tls branches: 1.15.6; 1.15.24;
Entropy-pool implementation move and cleanup.

1) Move core entropy-pool code and source/sink/sample management code
to sys/kern from sys/dev.

2) Remove use of NRND as test for presence of entropy-pool code throughout
source tree.

3) Remove use of RND_ENABLED in device drivers as microoptimization to
avoid expensive operations on disabled entropy sources; make the
rnd_add calls do this directly so all callers benefit.

4) Fix bug in recent rnd_add_data()/rnd_add_uint32() changes that might
have lead to slight entropy overestimation for some sources.

5) Add new source types for environmental sensors, power sensors, VM
system events, and skew between clocks, with a sample implementation
for each.

ok releng to go in before the branch due to the difficulty of later
pullup (widespread #ifdef removal and moved files). Tested with release
builds on amd64 and evbarm and live testing on amd64.
 1.14  19-Nov-2011  tls branches: 1.14.2;
First step of random number subsystem rework described in
<20111022023242.BA26F14A158@mail.netbsd.org>. This change includes
the following:

An initial cleanup and minor reorganization of the entropy pool
code in sys/dev/rnd.c and sys/dev/rndpool.c. Several bugs are
fixed. Some effort is made to accumulate entropy more quickly at
boot time.

A generic interface, "rndsink", is added, for stream generators to
request that they be re-keyed with good quality entropy from the pool
as soon as it is available.

The arc4random()/arc4randbytes() implementation in libkern is
adjusted to use the rndsink interface for rekeying, which helps
address the problem of low-quality keys at boot time.

An implementation of the FIPS 140-2 statistical tests for random
number generator quality is provided (libkern/rngtest.c). This
is based on Greg Rose's implementation from Qualcomm.

A new random stream generator, nist_ctr_drbg, is provided. It is
based on an implementation of the NIST SP800-90 CTR_DRBG by
Henric Jungheim. This generator users AES in a modified counter
mode to generate a backtracking-resistant random stream.

An abstraction layer, "cprng", is provided for in-kernel consumers
of randomness. The arc4random/arc4randbytes API is deprecated for
in-kernel use. It is replaced by "cprng_strong". The current
cprng_fast implementation wraps the existing arc4random
implementation. The current cprng_strong implementation wraps the
new CTR_DRBG implementation. Both interfaces are rekeyed from
the entropy pool automatically at intervals justifiable from best
current cryptographic practice.

In some quick tests, cprng_fast() is about the same speed as
the old arc4randbytes(), and cprng_strong() is about 20% faster
than rnd_extract_data(). Performance is expected to improve.

The AES code in src/crypto/rijndael is no longer an optional
kernel component, as it is required by cprng_strong, which is
not an optional kernel component.

The entropy pool output is subjected to the rngtest tests at
startup time; if it fails, the system will reboot. There is
approximately a 3/10000 chance of a false positive from these
tests. Entropy pool _input_ from hardware random numbers is
subjected to the rngtest tests at attach time, as well as the
FIPS continuous-output test, to detect bad or stuck hardware
RNGs; if any are detected, they are detached, but the system
continues to run.

A problem with rndctl(8) is fixed -- datastructures with
pointers in arrays are no longer passed to userspace (this
was not a security problem, but rather a major issue for
compat32). A new kernel will require a new rndctl.

The sysctl kern.arandom() and kern.urandom() nodes are hooked
up to the new generators, but the /dev/*random pseudodevices
are not, yet.

Manual pages for the new kernel interfaces are forthcoming.
 1.13  04-Sep-2009  tsutsui branches: 1.13.12;
Replace shutdownhook_establish(9) with pmf_device_register1(9).
Tested on sun3x.
 1.12  28-Apr-2008  martin Remove clause 3 and 4 from TNF licenses
 1.11  04-Apr-2008  tsutsui branches: 1.11.2; 1.11.4;
Split device_t/softc for le(4) and variants and misc cosmetic changes.
 1.10  11-Dec-2005  christos branches: 1.10.70;
merge ktrace-lwp.
 1.9  27-Feb-2005  perry nuke trailing whitespace
 1.8  04-Feb-2005  perry de-__P
 1.7  13-Feb-2004  wiz branches: 1.7.8; 1.7.10;
Uppercase CPU, plural is CPUs.
 1.6  29-Jun-2003  fvdl branches: 1.6.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.
 1.5  29-Jun-2003  jdolecek cosmetic - make sc_supmedia of struct lance_softc const
 1.4  18-Jun-2001  jdolecek Convert to use ether_ioctl() for SIOCSIFADDR and SIOCSIFFLAGS.
 1.3  28-Sep-2000  tsutsui branches: 1.3.2;
6 -> ETHER_ADDR_LEN
 1.2  15-Aug-1998  mycroft branches: 1.2.12;
Assign my copyrights to TNF.
 1.1  21-Jul-1998  drochner Split the LANCE driver into a part specific to the classic chip with
24-bit DMA addresses, and an independant part.
Implement support for the 32-bit mode in the newer (79c9xx) chips.
 1.2.12.1  20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.3.2.1  21-Jun-2001  nathanw Catch up to -current.
 1.6.2.5  04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.6.2.4  04-Feb-2005  skrll Sync with HEAD.
 1.6.2.3  21-Sep-2004  skrll Fix the sync with head I botched.
 1.6.2.2  18-Sep-2004  skrll Sync with HEAD.
 1.6.2.1  03-Aug-2004  skrll Sync with HEAD
 1.7.10.2  19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.7.10.1  12-Feb-2005  yamt sync with head.
 1.7.8.1  29-Apr-2005  kent sync with -current
 1.10.70.1  02-Jun-2008  mjf Sync with HEAD.
 1.11.4.2  16-Sep-2009  yamt sync with head
 1.11.4.1  16-May-2008  yamt sync with head.
 1.11.2.1  18-May-2008  yamt sync with head.
 1.13.12.1  17-Apr-2012  yamt sync with head
 1.14.2.1  18-Feb-2012  mrg merge to -current.
 1.15.24.1  06-Jun-2015  skrll Sync with HEAD
 1.15.6.1  03-Dec-2017  jdolecek update from HEAD

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