rcu: Prevent RCU callbacks from executing before scheduler initialized
[linux-2.6.git] / crypto / tgr192.c
index f0a45cf..cbca4f2 100644 (file)
  * (at your option) any later version.
  *
  */
+#include <crypto/internal/hash.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/mm.h>
-#include <asm/scatterlist.h>
-#include <linux/crypto.h>
+#include <asm/byteorder.h>
+#include <linux/types.h>
 
 #define TGR192_DIGEST_SIZE 24
 #define TGR160_DIGEST_SIZE 20
@@ -467,18 +468,10 @@ static void tgr192_transform(struct tgr192_ctx *tctx, const u8 * data)
        u64 a, b, c, aa, bb, cc;
        u64 x[8];
        int i;
-       const u8 *ptr = data;
-
-       for (i = 0; i < 8; i++, ptr += 8) {
-               x[i] = (((u64)ptr[7] ) << 56) ^
-               (((u64)ptr[6] & 0xffL) << 48) ^
-               (((u64)ptr[5] & 0xffL) << 40) ^
-               (((u64)ptr[4] & 0xffL) << 32) ^
-               (((u64)ptr[3] & 0xffL) << 24) ^
-               (((u64)ptr[2] & 0xffL) << 16) ^
-               (((u64)ptr[1] & 0xffL) <<  8) ^
-               (((u64)ptr[0] & 0xffL)      );
-       }
+       const __le64 *ptr = (const __le64 *)data;
+
+       for (i = 0; i < 8; i++)
+               x[i] = le64_to_cpu(ptr[i]);
 
        /* save */
        a = aa = tctx->a;
@@ -502,24 +495,26 @@ static void tgr192_transform(struct tgr192_ctx *tctx, const u8 * data)
        tctx->c = c;
 }
 
-static void tgr192_init(void *ctx)
+static int tgr192_init(struct shash_desc *desc)
 {
-       struct tgr192_ctx *tctx = ctx;
+       struct tgr192_ctx *tctx = shash_desc_ctx(desc);
 
-       memset (tctx->hash, 0, 64);
        tctx->a = 0x0123456789abcdefULL;
        tctx->b = 0xfedcba9876543210ULL;
        tctx->c = 0xf096a5b4c3b2e187ULL;
        tctx->nblocks = 0;
        tctx->count = 0;
+
+       return 0;
 }
 
 
 /* Update the message digest with the contents
  * of INBUF with length INLEN. */
-static void tgr192_update(void *ctx, const u8 * inbuf, unsigned int len)
+static int tgr192_update(struct shash_desc *desc, const u8 *inbuf,
+                         unsigned int len)
 {
-       struct tgr192_ctx *tctx = ctx;
+       struct tgr192_ctx *tctx = shash_desc_ctx(desc);
 
        if (tctx->count == 64) {        /* flush the buffer */
                tgr192_transform(tctx, tctx->hash);
@@ -527,15 +522,15 @@ static void tgr192_update(void *ctx, const u8 * inbuf, unsigned int len)
                tctx->nblocks++;
        }
        if (!inbuf) {
-               return;
+               return 0;
        }
        if (tctx->count) {
                for (; len && tctx->count < 64; len--) {
                        tctx->hash[tctx->count++] = *inbuf++;
                }
-               tgr192_update(tctx, NULL, 0);
+               tgr192_update(desc, NULL, 0);
                if (!len) {
-                       return;
+                       return 0;
                }
 
        }
@@ -550,19 +545,22 @@ static void tgr192_update(void *ctx, const u8 * inbuf, unsigned int len)
        for (; len && tctx->count < 64; len--) {
                tctx->hash[tctx->count++] = *inbuf++;
        }
+
+       return 0;
 }
 
 
 
 /* The routine terminates the computation */
-static void tgr192_final(void *ctx, u8 * out)
+static int tgr192_final(struct shash_desc *desc, u8 * out)
 {
-       struct tgr192_ctx *tctx = ctx;
+       struct tgr192_ctx *tctx = shash_desc_ctx(desc);
+       __be64 *dst = (__be64 *)out;
+       __be64 *be64p;
+       __le32 *le32p;
        u32 t, msb, lsb;
-       u8 *p;
-       int i, j;
 
-       tgr192_update(tctx, NULL, 0); /* flush */ ;
+       tgr192_update(desc, NULL, 0); /* flush */ ;
 
        msb = 0;
        t = tctx->nblocks;
@@ -590,146 +588,125 @@ static void tgr192_final(void *ctx, u8 * out)
                while (tctx->count < 64) {
                        tctx->hash[tctx->count++] = 0;
                }
-               tgr192_update(tctx, NULL, 0); /* flush */ ;
+               tgr192_update(desc, NULL, 0); /* flush */ ;
                memset(tctx->hash, 0, 56);    /* fill next block with zeroes */
        }
        /* append the 64 bit count */
-       tctx->hash[56] = lsb;
-       tctx->hash[57] = lsb >> 8;
-       tctx->hash[58] = lsb >> 16;
-       tctx->hash[59] = lsb >> 24;
-       tctx->hash[60] = msb;
-       tctx->hash[61] = msb >> 8;
-       tctx->hash[62] = msb >> 16;
-       tctx->hash[63] = msb >> 24;
+       le32p = (__le32 *)&tctx->hash[56];
+       le32p[0] = cpu_to_le32(lsb);
+       le32p[1] = cpu_to_le32(msb);
+
        tgr192_transform(tctx, tctx->hash);
 
-       p = tctx->hash;
-       *p++ = tctx->a >> 56; *p++ = tctx->a >> 48; *p++ = tctx->a >> 40;
-       *p++ = tctx->a >> 32; *p++ = tctx->a >> 24; *p++ = tctx->a >> 16;
-       *p++ = tctx->a >>  8; *p++ = tctx->a;\
-       *p++ = tctx->b >> 56; *p++ = tctx->b >> 48; *p++ = tctx->b >> 40;
-       *p++ = tctx->b >> 32; *p++ = tctx->b >> 24; *p++ = tctx->b >> 16;
-       *p++ = tctx->b >>  8; *p++ = tctx->b;
-       *p++ = tctx->c >> 56; *p++ = tctx->c >> 48; *p++ = tctx->c >> 40;
-       *p++ = tctx->c >> 32; *p++ = tctx->c >> 24; *p++ = tctx->c >> 16;
-       *p++ = tctx->c >>  8; *p++ = tctx->c;
-
-
-       /* unpack the hash */
-       j = 7;
-       for (i = 0; i < 8; i++) {
-               out[j--] = (tctx->a >> 8 * i) & 0xff;
-       }
-       j = 15;
-       for (i = 0; i < 8; i++) {
-               out[j--] = (tctx->b >> 8 * i) & 0xff;
-       }
-       j = 23;
-       for (i = 0; i < 8; i++) {
-               out[j--] = (tctx->c >> 8 * i) & 0xff;
-       }
+       be64p = (__be64 *)tctx->hash;
+       dst[0] = be64p[0] = cpu_to_be64(tctx->a);
+       dst[1] = be64p[1] = cpu_to_be64(tctx->b);
+       dst[2] = be64p[2] = cpu_to_be64(tctx->c);
+
+       return 0;
 }
 
-static void tgr160_final(void *ctx, u8 * out)
+static int tgr160_final(struct shash_desc *desc, u8 * out)
 {
-       struct tgr192_ctx *wctx = ctx;
        u8 D[64];
 
-       tgr192_final(wctx, D);
+       tgr192_final(desc, D);
        memcpy(out, D, TGR160_DIGEST_SIZE);
        memset(D, 0, TGR192_DIGEST_SIZE);
+
+       return 0;
 }
 
-static void tgr128_final(void *ctx, u8 * out)
+static int tgr128_final(struct shash_desc *desc, u8 * out)
 {
-       struct tgr192_ctx *wctx = ctx;
        u8 D[64];
 
-       tgr192_final(wctx, D);
+       tgr192_final(desc, D);
        memcpy(out, D, TGR128_DIGEST_SIZE);
        memset(D, 0, TGR192_DIGEST_SIZE);
+
+       return 0;
 }
 
-static struct crypto_alg tgr192 = {
-       .cra_name = "tgr192",
-       .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
-       .cra_blocksize = TGR192_BLOCK_SIZE,
-       .cra_ctxsize = sizeof(struct tgr192_ctx),
-       .cra_module = THIS_MODULE,
-       .cra_list = LIST_HEAD_INIT(tgr192.cra_list),
-       .cra_u = {.digest = {
-                            .dia_digestsize = TGR192_DIGEST_SIZE,
-                            .dia_init = tgr192_init,
-                            .dia_update = tgr192_update,
-                            .dia_final = tgr192_final}}
+static struct shash_alg tgr192 = {
+       .digestsize     =       TGR192_DIGEST_SIZE,
+       .init           =       tgr192_init,
+       .update         =       tgr192_update,
+       .final          =       tgr192_final,
+       .descsize       =       sizeof(struct tgr192_ctx),
+       .base           =       {
+               .cra_name       =       "tgr192",
+               .cra_flags      =       CRYPTO_ALG_TYPE_SHASH,
+               .cra_blocksize  =       TGR192_BLOCK_SIZE,
+               .cra_module     =       THIS_MODULE,
+       }
 };
 
-static struct crypto_alg tgr160 = {
-       .cra_name = "tgr160",
-       .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
-       .cra_blocksize = TGR192_BLOCK_SIZE,
-       .cra_ctxsize = sizeof(struct tgr192_ctx),
-       .cra_module = THIS_MODULE,
-       .cra_list = LIST_HEAD_INIT(tgr160.cra_list),
-       .cra_u = {.digest = {
-                            .dia_digestsize = TGR160_DIGEST_SIZE,
-                            .dia_init = tgr192_init,
-                            .dia_update = tgr192_update,
-                            .dia_final = tgr160_final}}
+static struct shash_alg tgr160 = {
+       .digestsize     =       TGR160_DIGEST_SIZE,
+       .init           =       tgr192_init,
+       .update         =       tgr192_update,
+       .final          =       tgr160_final,
+       .descsize       =       sizeof(struct tgr192_ctx),
+       .base           =       {
+               .cra_name       =       "tgr160",
+               .cra_flags      =       CRYPTO_ALG_TYPE_SHASH,
+               .cra_blocksize  =       TGR192_BLOCK_SIZE,
+               .cra_module     =       THIS_MODULE,
+       }
 };
 
-static struct crypto_alg tgr128 = {
-       .cra_name = "tgr128",
-       .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
-       .cra_blocksize = TGR192_BLOCK_SIZE,
-       .cra_ctxsize = sizeof(struct tgr192_ctx),
-       .cra_module = THIS_MODULE,
-       .cra_list = LIST_HEAD_INIT(tgr128.cra_list),
-       .cra_u = {.digest = {
-                            .dia_digestsize = TGR128_DIGEST_SIZE,
-                            .dia_init = tgr192_init,
-                            .dia_update = tgr192_update,
-                            .dia_final = tgr128_final}}
+static struct shash_alg tgr128 = {
+       .digestsize     =       TGR128_DIGEST_SIZE,
+       .init           =       tgr192_init,
+       .update         =       tgr192_update,
+       .final          =       tgr128_final,
+       .descsize       =       sizeof(struct tgr192_ctx),
+       .base           =       {
+               .cra_name       =       "tgr128",
+               .cra_flags      =       CRYPTO_ALG_TYPE_SHASH,
+               .cra_blocksize  =       TGR192_BLOCK_SIZE,
+               .cra_module     =       THIS_MODULE,
+       }
 };
 
-static int __init init(void)
+static int __init tgr192_mod_init(void)
 {
        int ret = 0;
 
-       ret = crypto_register_alg(&tgr192);
+       ret = crypto_register_shash(&tgr192);
 
        if (ret < 0) {
                goto out;
        }
 
-       ret = crypto_register_alg(&tgr160);
+       ret = crypto_register_shash(&tgr160);
        if (ret < 0) {
-               crypto_unregister_alg(&tgr192);
+               crypto_unregister_shash(&tgr192);
                goto out;
        }
 
-       ret = crypto_register_alg(&tgr128);
+       ret = crypto_register_shash(&tgr128);
        if (ret < 0) {
-               crypto_unregister_alg(&tgr192);
-               crypto_unregister_alg(&tgr160);
+               crypto_unregister_shash(&tgr192);
+               crypto_unregister_shash(&tgr160);
        }
       out:
        return ret;
 }
 
-static void __exit fini(void)
+static void __exit tgr192_mod_fini(void)
 {
-       crypto_unregister_alg(&tgr192);
-       crypto_unregister_alg(&tgr160);
-       crypto_unregister_alg(&tgr128);
+       crypto_unregister_shash(&tgr192);
+       crypto_unregister_shash(&tgr160);
+       crypto_unregister_shash(&tgr128);
 }
 
 MODULE_ALIAS("tgr160");
 MODULE_ALIAS("tgr128");
 
-module_init(init);
-module_exit(fini);
+module_init(tgr192_mod_init);
+module_exit(tgr192_mod_fini);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Tiger Message Digest Algorithm");