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Document sysctls

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hubertf 2010-01-22 09:18:07 +00:00
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share/man/man9/opencrypto.9
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@ -1,5 +1,5 @@
.\" $OpenBSD: crypto.9,v 1.25 2003/07/11 13:47:41 jmc Exp $
.\" $NetBSD: opencrypto.9,v 1.8 2009/12/08 09:23:06 mbalmer Exp $
.\" $NetBSD: opencrypto.9,v 1.9 2010/01/22 09:18:07 hubertf Exp $
.\"
.\" The author of this man page is Angelos D. Keromytis (angelos@cis.upenn.edu)
.\"
@ -16,7 +16,7 @@
.\" MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
.\" PURPOSE.
.\"
.Dd December 20, 2003
.Dd January 1, 2010
.Dt OPENCRYPTO 9
.Os
.Sh NAME
@ -324,7 +324,8 @@ decrypting (subject to
For MAC algorithms, this is where the result of the keyed hash will be
inserted.
.It Fa crd_flags
The following flags are defined:
For adjusting general operation from userland,
the following flags are defined:
.Bl -tag -width CRD_F_IV_EXPLICIT
.It Dv CRD_F_ENCRYPT
For encryption algorithms, this bit is set when encryption is required
@ -429,6 +430,28 @@ Identifier specifying which low-level driver is being used.
.It Fa krp_callback
Callback called on completion of a keying operation.
.El
.Pp
The following sysctl entries exist to adjust
the behaviour of the system from userland:
.Bl -tag -width kern.cryptodevallowsoft
.It kern.usercrypto
Allow (1) or forbid (0) userland acces to
.Pa /dev/crypto .
.It kern.userasymcrypto
Allow (1) or forbid (0) userland acces to
do asymmetric crypto requests.
.It kern.cryptodevallowsoft
Enable/disable access to hardware versus software operations:
.Bl -tag -width xxx
.It < 0
Force userlevel requests to use software operations, always.
.It = 0
Use hardware if present, grant userlevel requests for non-accelerated
operations (handling the latter in software).
.It > 0
Allow user requests only for operations which are hardware-accelerated.
.El
.El
.Sh DRIVER-SIDE API
The
.Fn crypto_get_driverid ,
@ -559,9 +582,11 @@ The callback is provided with an error code in case of failure, in the
.Fa crp_etype
field.
.Sh FILES
.Bl -tag -width sys/crypto/crypto.c
.It Pa sys/crypto/crypto.c
.Bl -tag -width sys/opencrypto/crypto.c
.It Pa sys/opencrypto/crypto.c
most of the framework code
.It Pa sys/crypto
crypto algorithm implementations
.El
.Sh SEE ALSO
.Xr ipsec 4 ,