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authorHerbert Xu <herbert@gondor.apana.org.au>2006-05-16 22:09:29 +1000
committerHerbert Xu <herbert@gondor.apana.org.au>2006-06-26 17:34:39 +1000
commit6c2bb98bc33ae33c7a33a133a4cd5a06395fece5 (patch)
tree96684cd2c473cd05d651ce1fa3dd72b1b4b19b09 /arch/x86_64
parent43600106e32809a4dead79fec67a63e9860e3d5d (diff)
[CRYPTO] all: Pass tfm instead of ctx to algorithms
Up until now algorithms have been happy to get a context pointer since they know everything that's in the tfm already (e.g., alignment, block size). However, once we have parameterised algorithms, such information will be specific to each tfm. So the algorithm API needs to be changed to pass the tfm structure instead of the context pointer. This patch is basically a text substitution. The only tricky bit is the assembly routines that need to get the context pointer offset through asm-offsets.h. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86_64')
-rw-r--r--arch/x86_64/crypto/aes-x86_64-asm.S18
-rw-r--r--arch/x86_64/crypto/aes.c10
-rw-r--r--arch/x86_64/kernel/asm-offsets.c3
3 files changed, 19 insertions, 12 deletions
diff --git a/arch/x86_64/crypto/aes-x86_64-asm.S b/arch/x86_64/crypto/aes-x86_64-asm.S
index 483cbb23ab8..f3ba643e144 100644
--- a/arch/x86_64/crypto/aes-x86_64-asm.S
+++ b/arch/x86_64/crypto/aes-x86_64-asm.S
@@ -15,6 +15,10 @@
.text
+#include <asm/asm-offsets.h>
+
+#define BASE crypto_tfm_ctx_offset
+
#define R1 %rax
#define R1E %eax
#define R1X %ax
@@ -46,19 +50,19 @@
#define R10 %r10
#define R11 %r11
-#define prologue(FUNC,BASE,B128,B192,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11) \
+#define prologue(FUNC,KEY,B128,B192,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11) \
.global FUNC; \
.type FUNC,@function; \
.align 8; \
FUNC: movq r1,r2; \
movq r3,r4; \
- leaq BASE+52(r8),r9; \
+ leaq BASE+KEY+52(r8),r9; \
movq r10,r11; \
movl (r7),r5 ## E; \
movl 4(r7),r1 ## E; \
movl 8(r7),r6 ## E; \
movl 12(r7),r7 ## E; \
- movl (r8),r10 ## E; \
+ movl BASE(r8),r10 ## E; \
xorl -48(r9),r5 ## E; \
xorl -44(r9),r1 ## E; \
xorl -40(r9),r6 ## E; \
@@ -128,8 +132,8 @@ FUNC: movq r1,r2; \
movl r3 ## E,r1 ## E; \
movl r4 ## E,r2 ## E;
-#define entry(FUNC,BASE,B128,B192) \
- prologue(FUNC,BASE,B128,B192,R2,R8,R7,R9,R1,R3,R4,R6,R10,R5,R11)
+#define entry(FUNC,KEY,B128,B192) \
+ prologue(FUNC,KEY,B128,B192,R2,R8,R7,R9,R1,R3,R4,R6,R10,R5,R11)
#define return epilogue(R8,R2,R9,R7,R5,R6,R3,R4,R11)
@@ -147,7 +151,7 @@ FUNC: movq r1,r2; \
#define decrypt_final(TAB,OFFSET) \
round(TAB,OFFSET,R2,R1,R4,R3,R6,R5,R7,R10,R5,R6,R3,R4)
-/* void aes_encrypt(void *ctx, u8 *out, const u8 *in) */
+/* void aes_encrypt(stuct crypto_tfm *tfm, u8 *out, const u8 *in) */
entry(aes_encrypt,0,enc128,enc192)
encrypt_round(aes_ft_tab,-96)
@@ -166,7 +170,7 @@ enc128: encrypt_round(aes_ft_tab,-32)
encrypt_final(aes_fl_tab,112)
return
-/* void aes_decrypt(void *ctx, u8 *out, const u8 *in) */
+/* void aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) */
entry(aes_decrypt,240,dec128,dec192)
decrypt_round(aes_it_tab,-96)
diff --git a/arch/x86_64/crypto/aes.c b/arch/x86_64/crypto/aes.c
index 6f77e7700d3..d6f8e0463b5 100644
--- a/arch/x86_64/crypto/aes.c
+++ b/arch/x86_64/crypto/aes.c
@@ -227,10 +227,10 @@ static void __init gen_tabs(void)
t ^= E_KEY[8 * i + 7]; E_KEY[8 * i + 15] = t; \
}
-static int aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len,
- u32 *flags)
+static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
+ unsigned int key_len, u32 *flags)
{
- struct aes_ctx *ctx = ctx_arg;
+ struct aes_ctx *ctx = crypto_tfm_ctx(tfm);
const __le32 *key = (const __le32 *)in_key;
u32 i, j, t, u, v, w;
@@ -283,8 +283,8 @@ static int aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len,
return 0;
}
-extern void aes_encrypt(void *ctx_arg, u8 *out, const u8 *in);
-extern void aes_decrypt(void *ctx_arg, u8 *out, const u8 *in);
+extern void aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
+extern void aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
static struct crypto_alg aes_alg = {
.cra_name = "aes",
diff --git a/arch/x86_64/kernel/asm-offsets.c b/arch/x86_64/kernel/asm-offsets.c
index 38834bbbae1..96687e2beb2 100644
--- a/arch/x86_64/kernel/asm-offsets.c
+++ b/arch/x86_64/kernel/asm-offsets.c
@@ -4,6 +4,7 @@
* and format the required data.
*/
+#include <linux/crypto.h>
#include <linux/sched.h>
#include <linux/stddef.h>
#include <linux/errno.h>
@@ -68,5 +69,7 @@ int main(void)
DEFINE(pbe_next, offsetof(struct pbe, next));
BLANK();
DEFINE(TSS_ist, offsetof(struct tss_struct, ist));
+ BLANK();
+ DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx));
return 0;
}