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727497ccdf
My merged pull request #15557 fixes compilation of sha2 kernels on arm v5/6. However, the compiler guards only allows sha256/512_armv7_impl to be used when __ARM_ARCH > 6. This patch enables these ASM kernels on all arm architectures. Some compiler guards are adjusted accordingly to avoid the unnecessary compilation of SIMD (e.g., neon, armv8ce) kernels on old architectures. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Shengqi Chen <harry-chen@outlook.com> Closes #15623
283 lines
6.4 KiB
C
283 lines
6.4 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2022 Tino Reichardt <milky-zfs@mcmilk.de>
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*/
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#include <sys/simd.h>
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#include <sys/zfs_context.h>
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#include <sys/zfs_impl.h>
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#include <sys/sha2.h>
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#include <sha2/sha2_impl.h>
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#include <sys/asm_linkage.h>
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#define TF(E, N) \
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extern void ASMABI E(uint64_t s[8], const void *, size_t); \
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static inline void N(uint64_t s[8], const void *d, size_t b) { \
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kfpu_begin(); E(s, d, b); kfpu_end(); \
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}
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/* some implementation is always okay */
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static inline boolean_t sha2_is_supported(void)
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{
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return (B_TRUE);
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}
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#if defined(__x86_64)
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/* Users of ASMABI requires all calls to be from wrappers */
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extern void ASMABI
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zfs_sha512_transform_x64(uint64_t s[8], const void *, size_t);
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static inline void
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tf_sha512_transform_x64(uint64_t s[8], const void *d, size_t b)
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{
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zfs_sha512_transform_x64(s, d, b);
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}
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const sha512_ops_t sha512_x64_impl = {
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.is_supported = sha2_is_supported,
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.transform = tf_sha512_transform_x64,
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.name = "x64"
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};
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#if defined(HAVE_AVX)
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static boolean_t sha2_have_avx(void)
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{
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return (kfpu_allowed() && zfs_avx_available());
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}
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TF(zfs_sha512_transform_avx, tf_sha512_avx);
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const sha512_ops_t sha512_avx_impl = {
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.is_supported = sha2_have_avx,
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.transform = tf_sha512_avx,
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.name = "avx"
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};
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#endif
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#if defined(HAVE_AVX2)
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static boolean_t sha2_have_avx2(void)
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{
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return (kfpu_allowed() && zfs_avx2_available());
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}
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TF(zfs_sha512_transform_avx2, tf_sha512_avx2);
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const sha512_ops_t sha512_avx2_impl = {
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.is_supported = sha2_have_avx2,
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.transform = tf_sha512_avx2,
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.name = "avx2"
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};
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#endif
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#elif defined(__aarch64__) || defined(__arm__)
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extern void zfs_sha512_block_armv7(uint64_t s[8], const void *, size_t);
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const sha512_ops_t sha512_armv7_impl = {
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.is_supported = sha2_is_supported,
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.transform = zfs_sha512_block_armv7,
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.name = "armv7"
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};
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#if defined(__aarch64__)
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static boolean_t sha512_have_armv8ce(void)
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{
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return (kfpu_allowed() && zfs_sha512_available());
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}
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TF(zfs_sha512_block_armv8, tf_sha512_armv8ce);
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const sha512_ops_t sha512_armv8_impl = {
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.is_supported = sha512_have_armv8ce,
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.transform = tf_sha512_armv8ce,
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.name = "armv8-ce"
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};
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#endif
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#if defined(__arm__) && __ARM_ARCH > 6
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static boolean_t sha512_have_neon(void)
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{
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return (kfpu_allowed() && zfs_neon_available());
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}
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TF(zfs_sha512_block_neon, tf_sha512_neon);
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const sha512_ops_t sha512_neon_impl = {
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.is_supported = sha512_have_neon,
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.transform = tf_sha512_neon,
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.name = "neon"
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};
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#endif
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#elif defined(__PPC64__)
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TF(zfs_sha512_ppc, tf_sha512_ppc);
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const sha512_ops_t sha512_ppc_impl = {
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.is_supported = sha2_is_supported,
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.transform = tf_sha512_ppc,
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.name = "ppc"
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};
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static boolean_t sha512_have_isa207(void)
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{
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return (kfpu_allowed() && zfs_isa207_available());
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}
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TF(zfs_sha512_power8, tf_sha512_power8);
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const sha512_ops_t sha512_power8_impl = {
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.is_supported = sha512_have_isa207,
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.transform = tf_sha512_power8,
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.name = "power8"
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};
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#endif /* __PPC64__ */
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/* the two generic ones */
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extern const sha512_ops_t sha512_generic_impl;
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/* array with all sha512 implementations */
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static const sha512_ops_t *const sha512_impls[] = {
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&sha512_generic_impl,
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#if defined(__x86_64)
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&sha512_x64_impl,
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#endif
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#if defined(__x86_64) && defined(HAVE_AVX)
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&sha512_avx_impl,
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#endif
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#if defined(__x86_64) && defined(HAVE_AVX2)
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&sha512_avx2_impl,
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#endif
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#if defined(__aarch64__) || defined(__arm__)
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&sha512_armv7_impl,
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#if defined(__aarch64__)
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&sha512_armv8_impl,
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#endif
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#if defined(__arm__) && __ARM_ARCH > 6
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&sha512_neon_impl,
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#endif
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#endif
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#if defined(__PPC64__)
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&sha512_ppc_impl,
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&sha512_power8_impl,
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#endif /* __PPC64__ */
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};
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/* use the generic implementation functions */
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#define IMPL_NAME "sha512"
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#define IMPL_OPS_T sha512_ops_t
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#define IMPL_ARRAY sha512_impls
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#define IMPL_GET_OPS sha512_get_ops
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#define ZFS_IMPL_OPS zfs_sha512_ops
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#include <generic_impl.c>
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#ifdef _KERNEL
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#define IMPL_FMT(impl, i) (((impl) == (i)) ? "[%s] " : "%s ")
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#if defined(__linux__)
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static int
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sha512_param_get(char *buffer, zfs_kernel_param_t *unused)
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{
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const uint32_t impl = IMPL_READ(generic_impl_chosen);
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char *fmt;
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int cnt = 0;
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/* cycling */
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fmt = IMPL_FMT(impl, IMPL_CYCLE);
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cnt += sprintf(buffer + cnt, fmt, "cycle");
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/* list fastest */
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fmt = IMPL_FMT(impl, IMPL_FASTEST);
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cnt += sprintf(buffer + cnt, fmt, "fastest");
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/* list all supported implementations */
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generic_impl_init();
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for (uint32_t i = 0; i < generic_supp_impls_cnt; ++i) {
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fmt = IMPL_FMT(impl, i);
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cnt += sprintf(buffer + cnt, fmt,
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generic_supp_impls[i]->name);
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}
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return (cnt);
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}
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static int
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sha512_param_set(const char *val, zfs_kernel_param_t *unused)
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{
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(void) unused;
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return (generic_impl_setname(val));
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}
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#elif defined(__FreeBSD__)
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#include <sys/sbuf.h>
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static int
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sha512_param(ZFS_MODULE_PARAM_ARGS)
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{
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int err;
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generic_impl_init();
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if (req->newptr == NULL) {
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const uint32_t impl = IMPL_READ(generic_impl_chosen);
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const int init_buflen = 64;
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const char *fmt;
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struct sbuf *s;
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s = sbuf_new_for_sysctl(NULL, NULL, init_buflen, req);
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/* cycling */
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fmt = IMPL_FMT(impl, IMPL_CYCLE);
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(void) sbuf_printf(s, fmt, "cycle");
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/* list fastest */
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fmt = IMPL_FMT(impl, IMPL_FASTEST);
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(void) sbuf_printf(s, fmt, "fastest");
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/* list all supported implementations */
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for (uint32_t i = 0; i < generic_supp_impls_cnt; ++i) {
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fmt = IMPL_FMT(impl, i);
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(void) sbuf_printf(s, fmt, generic_supp_impls[i]->name);
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}
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err = sbuf_finish(s);
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sbuf_delete(s);
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return (err);
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}
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/* we got module parameter */
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char buf[16];
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err = sysctl_handle_string(oidp, buf, sizeof (buf), req);
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if (err) {
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return (err);
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}
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return (-generic_impl_setname(buf));
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}
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#endif
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#undef IMPL_FMT
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ZFS_MODULE_VIRTUAL_PARAM_CALL(zfs, zfs_, sha512_impl,
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sha512_param_set, sha512_param_get, ZMOD_RW, \
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"Select SHA512 implementation.");
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#endif
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#undef TF
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