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authorobrien <obrien@FreeBSD.org>2013-07-29 20:26:27 +0000
committerobrien <obrien@FreeBSD.org>2013-07-29 20:26:27 +0000
commit721ce839c7c49ecca90b66a4523be0e6e29c057e (patch)
tree7321ee5c53e41f64a4e3a37d1e501321672bb5af /sys/ia64
parentf6b004c36a12554e599bc79d3f4efc2047574d1b (diff)
downloadFreeBSD-src-721ce839c7c49ecca90b66a4523be0e6e29c057e.zip
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Decouple yarrow from random(4) device.
* Make Yarrow an optional kernel component -- enabled by "YARROW_RNG" option. The files sha2.c, hash.c, randomdev_soft.c and yarrow.c comprise yarrow. * random(4) device doesn't really depend on rijndael-*. Yarrow, however, does. * Add random_adaptors.[ch] which is basically a store of random_adaptor's. random_adaptor is basically an adapter that plugs in to random(4). random_adaptor can only be plugged in to random(4) very early in bootup. Unplugging random_adaptor from random(4) is not supported, and is probably a bad idea anyway, due to potential loss of entropy pools. We currently have 3 random_adaptors: + yarrow + rdrand (ivy.c) + nehemeiah * Remove platform dependent logic from probe.c, and move it into corresponding registration routines of each random_adaptor provider. probe.c doesn't do anything other than picking a specific random_adaptor from a list of registered ones. * If the kernel doesn't have any random_adaptor adapters present then the creation of /dev/random is postponed until next random_adaptor is kldload'ed. * Fix randomdev_soft.c to refer to its own random_adaptor, instead of a system wide one. Submitted by: arthurmesh@gmail.com, obrien Obtained from: Juniper Networks Reviewed by: obrien
Diffstat (limited to 'sys/ia64')
-rw-r--r--sys/ia64/conf/GENERIC1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/ia64/conf/GENERIC b/sys/ia64/conf/GENERIC
index cb51617..ee4b652 100644
--- a/sys/ia64/conf/GENERIC
+++ b/sys/ia64/conf/GENERIC
@@ -198,6 +198,7 @@ device loop # Network loopback
device md # Memory "disks"
device puc # Multi I/O cards and multi-channel UARTs
device random # Entropy device
+options YARROW_RNG # Yarrow software RNG
device tun # Packet tunnel.
device uart # Serial port (UART)
device vlan # 802.1Q VLAN support
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