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-rw-r--r--crypto/crc32c.c25
-rw-r--r--crypto/tcrypt.c4
2 files changed, 19 insertions, 10 deletions
diff --git a/crypto/crc32c.c b/crypto/crc32c.c
index f2660123aeb4..91ecd895e957 100644
--- a/crypto/crc32c.c
+++ b/crypto/crc32c.c
@@ -16,14 +16,14 @@
#include <linux/string.h>
#include <linux/crypto.h>
#include <linux/crc32c.h>
-#include <linux/types.h>
-#include <asm/byteorder.h>
+#include <linux/kernel.h>
#define CHKSUM_BLOCK_SIZE 32
#define CHKSUM_DIGEST_SIZE 4
struct chksum_ctx {
u32 crc;
+ u32 key;
};
/*
@@ -35,7 +35,7 @@ static void chksum_init(struct crypto_tfm *tfm)
{
struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
- mctx->crc = ~(u32)0; /* common usage */
+ mctx->crc = mctx->key;
}
/*
@@ -53,7 +53,7 @@ static int chksum_setkey(struct crypto_tfm *tfm, const u8 *key,
*flags = CRYPTO_TFM_RES_BAD_KEY_LEN;
return -EINVAL;
}
- mctx->crc = __cpu_to_le32(*(u32 *)key);
+ mctx->key = le32_to_cpu(*(__le32 *)key);
return 0;
}
@@ -61,19 +61,23 @@ static void chksum_update(struct crypto_tfm *tfm, const u8 *data,
unsigned int length)
{
struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
- u32 mcrc;
- mcrc = crc32c(mctx->crc, data, (size_t)length);
-
- mctx->crc = mcrc;
+ mctx->crc = crc32c(mctx->crc, data, length);
}
static void chksum_final(struct crypto_tfm *tfm, u8 *out)
{
struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
- u32 mcrc = (mctx->crc ^ ~(u32)0);
- *(u32 *)out = __le32_to_cpu(mcrc);
+ *(__le32 *)out = ~cpu_to_le32(mctx->crc);
+}
+
+static int crc32c_cra_init(struct crypto_tfm *tfm)
+{
+ struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
+
+ mctx->key = ~0;
+ return 0;
}
static struct crypto_alg alg = {
@@ -83,6 +87,7 @@ static struct crypto_alg alg = {
.cra_ctxsize = sizeof(struct chksum_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(alg.cra_list),
+ .cra_init = crc32c_cra_init,
.cra_u = {
.digest = {
.dia_digestsize= CHKSUM_DIGEST_SIZE,
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index e52f56c5bd5e..bed225e83231 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -810,6 +810,7 @@ static void test_crc32c(void)
seed = SEEDTESTVAL;
(void)crypto_digest_setkey(tfm, (const u8*)&seed, sizeof(u32));
+ crypto_digest_init(tfm);
crypto_digest_final(tfm, (u8*)&crc);
printk("testing crc32c setkey returns %08x : %s\n", crc, (crc == (SEEDTESTVAL ^ ~(u32)0)) ?
"pass" : "ERROR");
@@ -821,6 +822,7 @@ static void test_crc32c(void)
for (i = 0; i < NUMVEC; i++) {
seed = ~(u32)0;
(void)crypto_digest_setkey(tfm, (const u8*)&seed, sizeof(u32));
+ crypto_digest_init(tfm);
crypto_digest_update(tfm, &sg[i], 1);
crypto_digest_final(tfm, (u8*)&crc);
if (crc == vec_results[i]) {
@@ -836,6 +838,7 @@ static void test_crc32c(void)
for (i = 0; i < NUMVEC; i++) {
seed = (crc ^ ~(u32)0);
(void)crypto_digest_setkey(tfm, (const u8*)&seed, sizeof(u32));
+ crypto_digest_init(tfm);
crypto_digest_update(tfm, &sg[i], 1);
crypto_digest_final(tfm, (u8*)&crc);
}
@@ -849,6 +852,7 @@ static void test_crc32c(void)
printk("\ntesting crc32c using digest:\n");
seed = ~(u32)0;
(void)crypto_digest_setkey(tfm, (const u8*)&seed, sizeof(u32));
+ crypto_digest_init(tfm);
crypto_digest_digest(tfm, sg, NUMVEC, (u8*)&crc);
if (crc == tot_vec_results) {
printk(" %08x:OK", crc);