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New sysctl node hw.aes_impl for selected AES implementation.

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This commit is contained in:
riastradh 2020-06-30 16:21:17 +00:00
parent ca08b3e761
commit 1c86761fac
1 changed files with 27 additions and 2 deletions
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29
sys/crypto/aes/aes_impl.c
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@ -1,4 +1,4 @@
/* $NetBSD: aes_impl.c,v 1.2 2020/06/29 23:36:59 riastradh Exp $ */
/* $NetBSD: aes_impl.c,v 1.3 2020/06/30 16:21:17 riastradh Exp $ */
/*-
* Copyright (c) 2020 The NetBSD Foundation, Inc.
@ -27,12 +27,13 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(1, "$NetBSD: aes_impl.c,v 1.2 2020/06/29 23:36:59 riastradh Exp $");
__KERNEL_RCSID(1, "$NetBSD: aes_impl.c,v 1.3 2020/06/30 16:21:17 riastradh Exp $");
#include <sys/types.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/once.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <crypto/aes/aes.h>
@ -43,6 +44,30 @@ static int aes_selftest_stdkeysched(void);
static const struct aes_impl *aes_md_impl __read_mostly;
static const struct aes_impl *aes_impl __read_mostly;
static int
sysctl_hw_aes_impl(SYSCTLFN_ARGS)
{
struct sysctlnode node;
KASSERTMSG(aes_impl != NULL,
"sysctl ran before AES implementation was selected");
node = *rnode;
node.sysctl_data = __UNCONST(aes_impl->ai_name);
node.sysctl_size = strlen(aes_impl->ai_name) + 1;
return sysctl_lookup(SYSCTLFN_CALL(&node));
}
SYSCTL_SETUP(sysctl_hw_aes_setup, "sysctl hw.aes_impl setup")
{
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READONLY, CTLTYPE_STRING, "aes_impl",
SYSCTL_DESCR("Selected AES implementation"),
sysctl_hw_aes_impl, 0, NULL, 0,
CTL_HW, CTL_CREATE, CTL_EOL);
}
/*
* The timing of AES implementation selection is finicky:
*