[S390] Fix zfcpdump header

[sfrench/cifs-2.6.git] / crypto / blkcipher.c

diff --git a/crypto/blkcipher.c b/crypto/blkcipher.c
index 6e93004f2181ccb3f265994cf9806db528641796..8edf40c835a77f566b04c677afbd27a68843443f 100644 (file)
--- a/crypto/blkcipher.c
+++ b/crypto/blkcipher.c
@@ -16,6 +16,7 @@
 
 #include <linux/crypto.h>
 #include <linux/errno.h>
+#include <linux/hardirq.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/scatterlist.h>
@@ -313,6 +314,9 @@ static int blkcipher_walk_first(struct blkcipher_desc *desc,
        struct crypto_blkcipher *tfm = desc->tfm;
        unsigned int alignmask = crypto_blkcipher_alignmask(tfm);
 
+       if (WARN_ON_ONCE(in_irq()))
+               return -EDEADLK;
+
        walk->nbytes = walk->total;
        if (unlikely(!walk->total))
                return 0;
@@ -345,12 +349,48 @@ static int setkey(struct crypto_tfm *tfm, const u8 *key,
        return cipher->setkey(tfm, key, keylen);
 }
 
-static unsigned int crypto_blkcipher_ctxsize(struct crypto_alg *alg)
+static int async_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
+                       unsigned int keylen)
+{
+       return setkey(crypto_ablkcipher_tfm(tfm), key, keylen);
+}
+
+static int async_encrypt(struct ablkcipher_request *req)
+{
+       struct crypto_tfm *tfm = req->base.tfm;
+       struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
+       struct blkcipher_desc desc = {
+               .tfm = __crypto_blkcipher_cast(tfm),
+               .info = req->info,
+               .flags = req->base.flags,
+       };
+
+
+       return alg->encrypt(&desc, req->dst, req->src, req->nbytes);
+}
+
+static int async_decrypt(struct ablkcipher_request *req)
+{
+       struct crypto_tfm *tfm = req->base.tfm;
+       struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
+       struct blkcipher_desc desc = {
+               .tfm = __crypto_blkcipher_cast(tfm),
+               .info = req->info,
+               .flags = req->base.flags,
+       };
+
+       return alg->decrypt(&desc, req->dst, req->src, req->nbytes);
+}
+
+static unsigned int crypto_blkcipher_ctxsize(struct crypto_alg *alg, u32 type,
+                                            u32 mask)
 {
        struct blkcipher_alg *cipher = &alg->cra_blkcipher;
        unsigned int len = alg->cra_ctxsize;
 
-       if (cipher->ivsize) {
+       type ^= CRYPTO_ALG_ASYNC;
+       mask &= CRYPTO_ALG_ASYNC;
+       if ((type & mask) && cipher->ivsize) {
                len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1);
                len += cipher->ivsize;
        }
@@ -358,16 +398,26 @@ static unsigned int crypto_blkcipher_ctxsize(struct crypto_alg *alg)
        return len;
 }
 
-static int crypto_init_blkcipher_ops(struct crypto_tfm *tfm)
+static int crypto_init_blkcipher_ops_async(struct crypto_tfm *tfm)
+{
+       struct ablkcipher_tfm *crt = &tfm->crt_ablkcipher;
+       struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
+
+       crt->setkey = async_setkey;
+       crt->encrypt = async_encrypt;
+       crt->decrypt = async_decrypt;
+       crt->ivsize = alg->ivsize;
+
+       return 0;
+}
+
+static int crypto_init_blkcipher_ops_sync(struct crypto_tfm *tfm)
 {
        struct blkcipher_tfm *crt = &tfm->crt_blkcipher;
        struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
        unsigned long align = crypto_tfm_alg_alignmask(tfm) + 1;
        unsigned long addr;
 
-       if (alg->ivsize > PAGE_SIZE / 8)
-               return -EINVAL;
-
        crt->setkey = setkey;
        crt->encrypt = alg->encrypt;
        crt->decrypt = alg->decrypt;
@@ -380,8 +430,23 @@ static int crypto_init_blkcipher_ops(struct crypto_tfm *tfm)
        return 0;
 }
 
+static int crypto_init_blkcipher_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
+{
+       struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
+
+       if (alg->ivsize > PAGE_SIZE / 8)
+               return -EINVAL;
+
+       type ^= CRYPTO_ALG_ASYNC;
+       mask &= CRYPTO_ALG_ASYNC;
+       if (type & mask)
+               return crypto_init_blkcipher_ops_sync(tfm);
+       else
+               return crypto_init_blkcipher_ops_async(tfm);
+}
+
 static void crypto_blkcipher_show(struct seq_file *m, struct crypto_alg *alg)
-       __attribute_used__;
+       __attribute__ ((unused));
 static void crypto_blkcipher_show(struct seq_file *m, struct crypto_alg *alg)
 {
        seq_printf(m, "type         : blkcipher\n");