[CRYPTO] skcipher: Added geniv field

This patch introduces the geniv field which indicates the default IV
generator for each algorithm.  It should point to a string that is not
freed as long as the algorithm is registered.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

3 files changed, 8 insertions, 0 deletions

diff --git a/crypto/ablkcipher.c b/crypto/ablkcipher.c
index e403d8137ecd..8f48b4d58fca 100644
--- a/crypto/ablkcipher.c
+++ b/crypto/ablkcipher.c
@@ -96,6 +96,7 @@ static void crypto_ablkcipher_show(struct seq_file *m, struct crypto_alg *alg)
         seq_printf(m, "min keysize  : %u\n", ablkcipher->min_keysize);
         seq_printf(m, "max keysize  : %u\n", ablkcipher->max_keysize);
         seq_printf(m, "ivsize       : %u\n", ablkcipher->ivsize);
+        seq_printf(m, "geniv        : %s\n", ablkcipher->geniv ?: "<default>");
 }
 
 const struct crypto_type crypto_ablkcipher_type = {
@@ -142,6 +143,7 @@ static void crypto_givcipher_show(struct seq_file *m, struct crypto_alg *alg)
         seq_printf(m, "min keysize  : %u\n", ablkcipher->min_keysize);
         seq_printf(m, "max keysize  : %u\n", ablkcipher->max_keysize);
         seq_printf(m, "ivsize       : %u\n", ablkcipher->ivsize);
+        seq_printf(m, "geniv        : %s\n", ablkcipher->geniv ?: "<built-in>");
 }
 
 const struct crypto_type crypto_givcipher_type = {
diff --git a/crypto/blkcipher.c b/crypto/blkcipher.c
index 7939504dfd8b..7a3e1a308074 100644
--- a/crypto/blkcipher.c
+++ b/crypto/blkcipher.c
@@ -496,6 +496,8 @@ static void crypto_blkcipher_show(struct seq_file *m, struct crypto_alg *alg)
         seq_printf(m, "min keysize  : %u\n", alg->cra_blkcipher.min_keysize);
         seq_printf(m, "max keysize  : %u\n", alg->cra_blkcipher.max_keysize);
         seq_printf(m, "ivsize       : %u\n", alg->cra_blkcipher.ivsize);
+        seq_printf(m, "geniv        : %s\n", alg->cra_blkcipher.geniv ?:
+                                             "<default>");
 }
 
 const struct crypto_type crypto_blkcipher_type = {
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 3656a24ea7f0..facafa1bd8ca 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -183,6 +183,8 @@ struct ablkcipher_alg {
         int (*givencrypt)(struct skcipher_givcrypt_request *req);
         int (*givdecrypt)(struct skcipher_givcrypt_request *req);
 
+        const char *geniv;
+
         unsigned int min_keysize;
         unsigned int max_keysize;
         unsigned int ivsize;
@@ -209,6 +211,8 @@ struct blkcipher_alg {
                        struct scatterlist *dst, struct scatterlist *src,
                        unsigned int nbytes);
 
+        const char *geniv;
+
         unsigned int min_keysize;
         unsigned int max_keysize;
         unsigned int ivsize;