crypto: talitos - second prepare step for adding ahash algorithms

Used talitos_alg_template in talitos_crypto_alg
so that it will accommodate ahash algorithms.
Added some preparation code for ahash allocation and removal.
No actual algorithms yet.

Signed-off-by: Lee Nipper <lee.nipper@gmail.com>
Acked-By: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 43 insertions, 12 deletions

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index ce38b05c8de..4e8153a839a 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -46,6 +46,8 @@
 #include <crypto/aead.h>
 #include <crypto/authenc.h>
 #include <crypto/skcipher.h>
+#include <crypto/hash.h>
+#include <crypto/internal/hash.h>
 #include <crypto/scatterwalk.h>
 
 #include "talitos.h"
@@ -1482,6 +1484,7 @@ struct talitos_alg_template {
         u32 type;
         union {
                 struct crypto_alg crypto;
+                struct ahash_alg hash;
         } alg;
         __be32 desc_hdr_template;
 };
@@ -1698,8 +1701,7 @@ static struct talitos_alg_template driver_algs[] = {
 struct talitos_crypto_alg {
         struct list_head entry;
         struct device *dev;
-        __be32 desc_hdr_template;
-        struct crypto_alg crypto_alg;
+        struct talitos_alg_template algt;
 };
 
 static int talitos_cra_init(struct crypto_tfm *tfm)
@@ -1708,13 +1710,14 @@ static int talitos_cra_init(struct crypto_tfm *tfm)
         struct talitos_crypto_alg *talitos_alg;
         struct talitos_ctx *ctx = crypto_tfm_ctx(tfm);
 
-        talitos_alg =  container_of(alg, struct talitos_crypto_alg, crypto_alg);
+        talitos_alg =  container_of(alg, struct talitos_crypto_alg,
+                                    algt.alg.crypto);
 
         /* update context with ptr to dev */
         ctx->dev = talitos_alg->dev;
 
         /* copy descriptor header template value */
-        ctx->desc_hdr_template = talitos_alg->desc_hdr_template;
+        ctx->desc_hdr_template = talitos_alg->algt.desc_hdr_template;
 
         /* random first IV */
         get_random_bytes(ctx->iv, TALITOS_MAX_IV_LENGTH);
@@ -1750,7 +1753,15 @@ static int talitos_remove(struct of_device *ofdev)
         int i;
 
         list_for_each_entry_safe(t_alg, n, &priv->alg_list, entry) {
-                crypto_unregister_alg(&t_alg->crypto_alg);
+                switch (t_alg->algt.type) {
+                case CRYPTO_ALG_TYPE_ABLKCIPHER:
+                case CRYPTO_ALG_TYPE_AEAD:
+                        crypto_unregister_alg(&t_alg->algt.alg.crypto);
+                        break;
+                case CRYPTO_ALG_TYPE_AHASH:
+                        crypto_unregister_ahash(&t_alg->algt.alg.hash);
+                        break;
+                }
                 list_del(&t_alg->entry);
                 kfree(t_alg);
         }
@@ -1791,8 +1802,16 @@ static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev,
         if (!t_alg)
                 return ERR_PTR(-ENOMEM);
 
-        alg = &t_alg->crypto_alg;
-        *alg = template->alg.crypto;
+        t_alg->algt = *template;
+
+        switch (t_alg->algt.type) {
+        case CRYPTO_ALG_TYPE_ABLKCIPHER:
+        case CRYPTO_ALG_TYPE_AEAD:
+                alg = &t_alg->algt.alg.crypto;
+                break;
+        case CRYPTO_ALG_TYPE_AHASH:
+                alg = &t_alg->algt.alg.hash.halg.base;
+        }
 
         alg->cra_module = THIS_MODULE;
         alg->cra_init = talitos_cra_init;
@@ -1800,7 +1819,6 @@ static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev,
         alg->cra_alignmask = 0;
         alg->cra_ctxsize = sizeof(struct talitos_ctx);
 
-        t_alg->desc_hdr_template = template->desc_hdr_template;
         t_alg->dev = dev;
 
         return t_alg;
@@ -1934,6 +1952,7 @@ static int talitos_probe(struct of_device *ofdev,
         for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
                 if (hw_supports(dev, driver_algs[i].desc_hdr_template)) {
                         struct talitos_crypto_alg *t_alg;
+                        char *name = NULL;
 
                         t_alg = talitos_alg_alloc(dev, &driver_algs[i]);
                         if (IS_ERR(t_alg)) {
@@ -1941,15 +1960,27 @@ static int talitos_probe(struct of_device *ofdev,
                                 goto err_out;
                         }
 
-                        err = crypto_register_alg(&t_alg->crypto_alg);
+                        switch (t_alg->algt.type) {
+                        case CRYPTO_ALG_TYPE_ABLKCIPHER:
+                        case CRYPTO_ALG_TYPE_AEAD:
+                                err = crypto_register_alg(
+                                                &t_alg->algt.alg.crypto);
+                                name = t_alg->algt.alg.crypto.cra_driver_name;
+                                break;
+                        case CRYPTO_ALG_TYPE_AHASH:
+                                err = crypto_register_ahash(
+                                                &t_alg->algt.alg.hash);
+                                name =
+                                 t_alg->algt.alg.hash.halg.base.cra_driver_name;
+                                break;
+                        }
                         if (err) {
                                 dev_err(dev, "%s alg registration failed\n",
-                                        t_alg->crypto_alg.cra_driver_name);
+                                        name);
                                 kfree(t_alg);
                         } else {
                                 list_add_tail(&t_alg->entry, &priv->alg_list);
-                                dev_info(dev, "%s\n",
-                                         t_alg->crypto_alg.cra_driver_name);
+                                dev_info(dev, "%s\n", name);
                         }
                 }
         }