From: Eric Biggers <ebiggers@xxxxxxxxxx>
Now that all glue_helper users have been switched from the blkcipher
interface over to the skcipher interface, remove the versions of the
glue_helper functions that handled the blkcipher interface.
Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
---
arch/x86/crypto/glue_helper.c | 344 ------------------------------
arch/x86/include/asm/crypto/glue_helper.h | 62 ------
2 files changed, 406 deletions(-)
diff --git a/arch/x86/crypto/glue_helper.c b/arch/x86/crypto/glue_helper.c
index cd5e7cebdb9f2..fab5fa1aed77f 100644
--- a/arch/x86/crypto/glue_helper.c
+++ b/arch/x86/crypto/glue_helper.c
@@ -32,63 +32,6 @@
#include <crypto/xts.h>
#include <asm/crypto/glue_helper.h>
-static int __glue_ecb_crypt_128bit(const struct common_glue_ctx *gctx,
- struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- void *ctx = crypto_blkcipher_ctx(desc->tfm);
- const unsigned int bsize = 128 / 8;
- unsigned int nbytes, i, func_bytes;
- bool fpu_enabled = false;
- int err;
-
- err = blkcipher_walk_virt(desc, walk);
-
- while ((nbytes = walk->nbytes)) {
- u8 *wsrc = walk->src.virt.addr;
- u8 *wdst = walk->dst.virt.addr;
-
- fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
- desc, fpu_enabled, nbytes);
-
- for (i = 0; i < gctx->num_funcs; i++) {
- func_bytes = bsize * gctx->funcs[i].num_blocks;
-
- /* Process multi-block batch */
- if (nbytes >= func_bytes) {
- do {
- gctx->funcs[i].fn_u.ecb(ctx, wdst,
- wsrc);
-
- wsrc += func_bytes;
- wdst += func_bytes;
- nbytes -= func_bytes;
- } while (nbytes >= func_bytes);
-
- if (nbytes < bsize)
- goto done;
- }
- }
-
-done:
- err = blkcipher_walk_done(desc, walk, nbytes);
- }
-
- glue_fpu_end(fpu_enabled);
- return err;
-}
-
-int glue_ecb_crypt_128bit(const struct common_glue_ctx *gctx,
- struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- struct blkcipher_walk walk;
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- return __glue_ecb_crypt_128bit(gctx, desc, &walk);
-}
-EXPORT_SYMBOL_GPL(glue_ecb_crypt_128bit);
-
int glue_ecb_req_128bit(const struct common_glue_ctx *gctx,
struct skcipher_request *req)
{
@@ -135,51 +78,6 @@ int glue_ecb_req_128bit(const struct common_glue_ctx *gctx,
}
EXPORT_SYMBOL_GPL(glue_ecb_req_128bit);
-static unsigned int __glue_cbc_encrypt_128bit(const common_glue_func_t fn,
- struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- void *ctx = crypto_blkcipher_ctx(desc->tfm);
- const unsigned int bsize = 128 / 8;
- unsigned int nbytes = walk->nbytes;
- u128 *src = (u128 *)walk->src.virt.addr;
- u128 *dst = (u128 *)walk->dst.virt.addr;
- u128 *iv = (u128 *)walk->iv;
-
- do {
- u128_xor(dst, src, iv);
- fn(ctx, (u8 *)dst, (u8 *)dst);
- iv = dst;
-
- src += 1;
- dst += 1;
- nbytes -= bsize;
- } while (nbytes >= bsize);
-
- *(u128 *)walk->iv = *iv;
- return nbytes;
-}
-
-int glue_cbc_encrypt_128bit(const common_glue_func_t fn,
- struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- struct blkcipher_walk walk;
- int err;
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- err = blkcipher_walk_virt(desc, &walk);
-
- while ((nbytes = walk.nbytes)) {
- nbytes = __glue_cbc_encrypt_128bit(fn, desc, &walk);
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- return err;
-}
-EXPORT_SYMBOL_GPL(glue_cbc_encrypt_128bit);
-
int glue_cbc_encrypt_req_128bit(const common_glue_func_t fn,
struct skcipher_request *req)
{
@@ -212,82 +110,6 @@ int glue_cbc_encrypt_req_128bit(const common_glue_func_t fn,
}
EXPORT_SYMBOL_GPL(glue_cbc_encrypt_req_128bit);
-static unsigned int
-__glue_cbc_decrypt_128bit(const struct common_glue_ctx *gctx,
- struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- void *ctx = crypto_blkcipher_ctx(desc->tfm);
- const unsigned int bsize = 128 / 8;
- unsigned int nbytes = walk->nbytes;
- u128 *src = (u128 *)walk->src.virt.addr;
- u128 *dst = (u128 *)walk->dst.virt.addr;
- u128 last_iv;
- unsigned int num_blocks, func_bytes;
- unsigned int i;
-
- /* Start of the last block. */
- src += nbytes / bsize - 1;
- dst += nbytes / bsize - 1;
-
- last_iv = *src;
-
- for (i = 0; i < gctx->num_funcs; i++) {
- num_blocks = gctx->funcs[i].num_blocks;
- func_bytes = bsize * num_blocks;
-
- /* Process multi-block batch */
- if (nbytes >= func_bytes) {
- do {
- nbytes -= func_bytes - bsize;
- src -= num_blocks - 1;
- dst -= num_blocks - 1;
-
- gctx->funcs[i].fn_u.cbc(ctx, dst, src);
-
- nbytes -= bsize;
- if (nbytes < bsize)
- goto done;
-
- u128_xor(dst, dst, src - 1);
- src -= 1;
- dst -= 1;
- } while (nbytes >= func_bytes);
- }
- }
-
-done:
- u128_xor(dst, dst, (u128 *)walk->iv);
- *(u128 *)walk->iv = last_iv;
-
- return nbytes;
-}
-
-int glue_cbc_decrypt_128bit(const struct common_glue_ctx *gctx,
- struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- const unsigned int bsize = 128 / 8;
- bool fpu_enabled = false;
- struct blkcipher_walk walk;
- int err;
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- err = blkcipher_walk_virt(desc, &walk);
-
- while ((nbytes = walk.nbytes)) {
- fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
- desc, fpu_enabled, nbytes);
- nbytes = __glue_cbc_decrypt_128bit(gctx, desc, &walk);
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- glue_fpu_end(fpu_enabled);
- return err;
-}
-EXPORT_SYMBOL_GPL(glue_cbc_decrypt_128bit);
-
int glue_cbc_decrypt_req_128bit(const struct common_glue_ctx *gctx,
struct skcipher_request *req)
{
@@ -349,96 +171,6 @@ int glue_cbc_decrypt_req_128bit(const struct common_glue_ctx *gctx,
}
EXPORT_SYMBOL_GPL(glue_cbc_decrypt_req_128bit);
-static void glue_ctr_crypt_final_128bit(const common_glue_ctr_func_t fn_ctr,
- struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- void *ctx = crypto_blkcipher_ctx(desc->tfm);
- u8 *src = (u8 *)walk->src.virt.addr;
- u8 *dst = (u8 *)walk->dst.virt.addr;
- unsigned int nbytes = walk->nbytes;
- le128 ctrblk;
- u128 tmp;
-
- be128_to_le128(&ctrblk, (be128 *)walk->iv);
-
- memcpy(&tmp, src, nbytes);
- fn_ctr(ctx, &tmp, &tmp, &ctrblk);
- memcpy(dst, &tmp, nbytes);
-
- le128_to_be128((be128 *)walk->iv, &ctrblk);
-}
-
-static unsigned int __glue_ctr_crypt_128bit(const struct common_glue_ctx *gctx,
- struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- const unsigned int bsize = 128 / 8;
- void *ctx = crypto_blkcipher_ctx(desc->tfm);
- unsigned int nbytes = walk->nbytes;
- u128 *src = (u128 *)walk->src.virt.addr;
- u128 *dst = (u128 *)walk->dst.virt.addr;
- le128 ctrblk;
- unsigned int num_blocks, func_bytes;
- unsigned int i;
-
- be128_to_le128(&ctrblk, (be128 *)walk->iv);
-
- /* Process multi-block batch */
- for (i = 0; i < gctx->num_funcs; i++) {
- num_blocks = gctx->funcs[i].num_blocks;
- func_bytes = bsize * num_blocks;
-
- if (nbytes >= func_bytes) {
- do {
- gctx->funcs[i].fn_u.ctr(ctx, dst, src, &ctrblk);
-
- src += num_blocks;
- dst += num_blocks;
- nbytes -= func_bytes;
- } while (nbytes >= func_bytes);
-
- if (nbytes < bsize)
- goto done;
- }
- }
-
-done:
- le128_to_be128((be128 *)walk->iv, &ctrblk);
- return nbytes;
-}
-
-int glue_ctr_crypt_128bit(const struct common_glue_ctx *gctx,
- struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- const unsigned int bsize = 128 / 8;
- bool fpu_enabled = false;
- struct blkcipher_walk walk;
- int err;
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- err = blkcipher_walk_virt_block(desc, &walk, bsize);
-
- while ((nbytes = walk.nbytes) >= bsize) {
- fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
- desc, fpu_enabled, nbytes);
- nbytes = __glue_ctr_crypt_128bit(gctx, desc, &walk);
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- glue_fpu_end(fpu_enabled);
-
- if (walk.nbytes) {
- glue_ctr_crypt_final_128bit(
- gctx->funcs[gctx->num_funcs - 1].fn_u.ctr, desc, &walk);
- err = blkcipher_walk_done(desc, &walk, 0);
- }
-
- return err;
-}
-EXPORT_SYMBOL_GPL(glue_ctr_crypt_128bit);
-
int glue_ctr_req_128bit(const struct common_glue_ctx *gctx,
struct skcipher_request *req)
{
@@ -507,42 +239,6 @@ int glue_ctr_req_128bit(const struct common_glue_ctx *gctx,
}
EXPORT_SYMBOL_GPL(glue_ctr_req_128bit);
-static unsigned int __glue_xts_crypt_128bit(const struct common_glue_ctx *gctx,
- void *ctx,
- struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- const unsigned int bsize = 128 / 8;
- unsigned int nbytes = walk->nbytes;
- u128 *src = (u128 *)walk->src.virt.addr;
- u128 *dst = (u128 *)walk->dst.virt.addr;
- unsigned int num_blocks, func_bytes;
- unsigned int i;
-
- /* Process multi-block batch */
- for (i = 0; i < gctx->num_funcs; i++) {
- num_blocks = gctx->funcs[i].num_blocks;
- func_bytes = bsize * num_blocks;
-
- if (nbytes >= func_bytes) {
- do {
- gctx->funcs[i].fn_u.xts(ctx, dst, src,
- (le128 *)walk->iv);
-
- src += num_blocks;
- dst += num_blocks;
- nbytes -= func_bytes;
- } while (nbytes >= func_bytes);
-
- if (nbytes < bsize)
- goto done;
- }
- }
-
-done:
- return nbytes;
-}
-
static unsigned int __glue_xts_req_128bit(const struct common_glue_ctx *gctx,
void *ctx,
struct skcipher_walk *walk)
@@ -578,46 +274,6 @@ static unsigned int __glue_xts_req_128bit(const struct common_glue_ctx *gctx,
return nbytes;
}
-/* for implementations implementing faster XTS IV generator */
-int glue_xts_crypt_128bit(const struct common_glue_ctx *gctx,
- struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes,
- void (*tweak_fn)(void *ctx, u8 *dst, const u8 *src),
- void *tweak_ctx, void *crypt_ctx)
-{
- const unsigned int bsize = 128 / 8;
- bool fpu_enabled = false;
- struct blkcipher_walk walk;
- int err;
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
-
- err = blkcipher_walk_virt(desc, &walk);
- nbytes = walk.nbytes;
- if (!nbytes)
- return err;
-
- /* set minimum length to bsize, for tweak_fn */
- fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
- desc, fpu_enabled,
- nbytes < bsize ? bsize : nbytes);
-
- /* calculate first value of T */
- tweak_fn(tweak_ctx, walk.iv, walk.iv);
-
- while (nbytes) {
- nbytes = __glue_xts_crypt_128bit(gctx, crypt_ctx, desc, &walk);
-
- err = blkcipher_walk_done(desc, &walk, nbytes);
- nbytes = walk.nbytes;
- }
-
- glue_fpu_end(fpu_enabled);
-
- return err;
-}
-EXPORT_SYMBOL_GPL(glue_xts_crypt_128bit);
-
int glue_xts_req_128bit(const struct common_glue_ctx *gctx,
struct skcipher_request *req,
common_glue_func_t tweak_fn, void *tweak_ctx,
diff --git a/arch/x86/include/asm/crypto/glue_helper.h b/arch/x86/include/asm/crypto/glue_helper.h
index 91c623e6ddbd4..b925a6363b3ff 100644
--- a/arch/x86/include/asm/crypto/glue_helper.h
+++ b/arch/x86/include/asm/crypto/glue_helper.h
@@ -44,32 +44,6 @@ struct common_glue_ctx {
struct common_glue_func_entry funcs[];
};
-static inline bool glue_fpu_begin(unsigned int bsize, int fpu_blocks_limit,
- struct blkcipher_desc *desc,
- bool fpu_enabled, unsigned int nbytes)
-{
- if (likely(fpu_blocks_limit < 0))
- return false;
-
- if (fpu_enabled)
- return true;
-
- /*
- * Vector-registers are only used when chunk to be processed is large
- * enough, so do not enable FPU until it is necessary.
- */
- if (nbytes < bsize * (unsigned int)fpu_blocks_limit)
- return false;
-
- if (desc) {
- /* prevent sleeping if FPU is in use */
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
- }
-
- kernel_fpu_begin();
- return true;
-}
-
static inline bool glue_skwalk_fpu_begin(unsigned int bsize,
int fpu_blocks_limit,
struct skcipher_walk *walk,
@@ -126,54 +100,18 @@ static inline void le128_inc(le128 *i)
i->b = cpu_to_le64(b);
}
-extern int glue_ecb_crypt_128bit(const struct common_glue_ctx *gctx,
- struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes);
-
extern int glue_ecb_req_128bit(const struct common_glue_ctx *gctx,
struct skcipher_request *req);
-extern int glue_cbc_encrypt_128bit(const common_glue_func_t fn,
- struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes);
-
extern int glue_cbc_encrypt_req_128bit(const common_glue_func_t fn,
struct skcipher_request *req);
-extern int glue_cbc_decrypt_128bit(const struct common_glue_ctx *gctx,
- struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes);
-
extern int glue_cbc_decrypt_req_128bit(const struct common_glue_ctx *gctx,
struct skcipher_request *req);
-extern int glue_ctr_crypt_128bit(const struct common_glue_ctx *gctx,
- struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes);
-
extern int glue_ctr_req_128bit(const struct common_glue_ctx *gctx,
struct skcipher_request *req);
-extern int glue_xts_crypt_128bit(const struct common_glue_ctx *gctx,
- struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes,
- common_glue_func_t tweak_fn, void *tweak_ctx,
- void *crypt_ctx);
-
-extern int glue_xts_crypt_128bit(const struct common_glue_ctx *gctx,
- struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes,
- common_glue_func_t tweak_fn, void *tweak_ctx,
- void *crypt_ctx);
-
extern int glue_xts_req_128bit(const struct common_glue_ctx *gctx,
struct skcipher_request *req,
common_glue_func_t tweak_fn, void *tweak_ctx,
--
2.16.2
