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icp: brutally remove unused AES modes

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Still retaining the struture, for now.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16209
This commit is contained in:
Rob Norris
2024-05-18 21:57:36 +10:00
committed by Brian Behlendorf
parent 4185179190
commit 57249bcddc
12 changed files with 57 additions and 1223 deletions
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module/icp/algs/modes/gcm.c
+13 -66
View File
@@ -50,11 +50,6 @@
static uint32_t icp_gcm_impl = IMPL_FASTEST;
static uint32_t user_sel_impl = IMPL_FASTEST;
static inline int gcm_init_ctx_impl(boolean_t, gcm_ctx_t *, char *, size_t,
int (*)(const void *, const uint8_t *, uint8_t *),
void (*)(uint8_t *, uint8_t *),
void (*)(uint8_t *, uint8_t *));
#ifdef CAN_USE_GCM_ASM
/* Does the architecture we run on support the MOVBE instruction? */
boolean_t gcm_avx_can_use_movbe = B_FALSE;
@@ -590,40 +585,11 @@ gcm_init(gcm_ctx_t *ctx, const uint8_t *iv, size_t iv_len,
return (CRYPTO_SUCCESS);
}
/*
* The following function is called at encrypt or decrypt init time
* for AES GCM mode.
*/
int
gcm_init_ctx(gcm_ctx_t *gcm_ctx, char *param, size_t block_size,
int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
void (*copy_block)(uint8_t *, uint8_t *),
void (*xor_block)(uint8_t *, uint8_t *))
{
return (gcm_init_ctx_impl(B_FALSE, gcm_ctx, param, block_size,
encrypt_block, copy_block, xor_block));
}
/*
* The following function is called at encrypt or decrypt init time
* for AES GMAC mode.
*/
int
gmac_init_ctx(gcm_ctx_t *gcm_ctx, char *param, size_t block_size,
int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
void (*copy_block)(uint8_t *, uint8_t *),
void (*xor_block)(uint8_t *, uint8_t *))
{
return (gcm_init_ctx_impl(B_TRUE, gcm_ctx, param, block_size,
encrypt_block, copy_block, xor_block));
}
/*
* Init the GCM context struct. Handle the cycle and avx implementations here.
* Initialization of a GMAC context differs slightly from a GCM context.
*/
static inline int
gcm_init_ctx_impl(boolean_t gmac_mode, gcm_ctx_t *gcm_ctx, char *param,
int
gcm_init_ctx(gcm_ctx_t *gcm_ctx, char *param,
size_t block_size, int (*encrypt_block)(const void *, const uint8_t *,
uint8_t *), void (*copy_block)(uint8_t *, uint8_t *),
void (*xor_block)(uint8_t *, uint8_t *))
@@ -635,22 +601,16 @@ gcm_init_ctx_impl(boolean_t gmac_mode, gcm_ctx_t *gcm_ctx, char *param,
if (param != NULL) {
gcm_param = (CK_AES_GCM_PARAMS *)(void *)param;
if (gmac_mode == B_FALSE) {
/* GCM mode. */
if ((rv = gcm_validate_args(gcm_param)) != 0) {
return (rv);
}
gcm_ctx->gcm_flags |= GCM_MODE;
size_t tbits = gcm_param->ulTagBits;
tag_len = CRYPTO_BITS2BYTES(tbits);
iv_len = gcm_param->ulIvLen;
} else {
/* GMAC mode. */
gcm_ctx->gcm_flags |= GMAC_MODE;
tag_len = CRYPTO_BITS2BYTES(AES_GMAC_TAG_BITS);
iv_len = AES_GMAC_IV_LEN;
/* GCM mode. */
if ((rv = gcm_validate_args(gcm_param)) != 0) {
return (rv);
}
gcm_ctx->gcm_flags |= GCM_MODE;
size_t tbits = gcm_param->ulTagBits;
tag_len = CRYPTO_BITS2BYTES(tbits);
iv_len = gcm_param->ulIvLen;
gcm_ctx->gcm_tag_len = tag_len;
gcm_ctx->gcm_processed_data_len = 0;
@@ -684,10 +644,9 @@ gcm_init_ctx_impl(boolean_t gmac_mode, gcm_ctx_t *gcm_ctx, char *param,
}
/*
* If this is a GCM context, use the MOVBE and the BSWAP
* variants alternately. GMAC contexts code paths do not
* use the MOVBE instruction.
* variants alternately.
*/
if (gcm_ctx->gcm_use_avx == B_TRUE && gmac_mode == B_FALSE &&
if (gcm_ctx->gcm_use_avx == B_TRUE &&
zfs_movbe_available() == B_TRUE) {
(void) atomic_toggle_boolean_nv(
(volatile boolean_t *)&gcm_avx_can_use_movbe);
@@ -758,18 +717,6 @@ gcm_alloc_ctx(int kmflag)
return (gcm_ctx);
}
void *
gmac_alloc_ctx(int kmflag)
{
gcm_ctx_t *gcm_ctx;
if ((gcm_ctx = kmem_zalloc(sizeof (gcm_ctx_t), kmflag)) == NULL)
return (NULL);
gcm_ctx->gcm_flags = GMAC_MODE;
return (gcm_ctx);
}
/* GCM implementation that contains the fastest methods */
static gcm_impl_ops_t gcm_fastest_impl = {
.name = "fastest"