diff options
Diffstat (limited to 'crypto/hmac.c')
| -rw-r--r-- | crypto/hmac.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/crypto/hmac.c b/crypto/hmac.c index 3610ff0b67392..09a7872b40600 100644 --- a/crypto/hmac.c +++ b/crypto/hmac.c @@ -160,6 +160,20 @@ static int hmac_init_tfm(struct crypto_shash *parent) return 0; } +static int hmac_clone_tfm(struct crypto_shash *dst, struct crypto_shash *src) +{ + struct hmac_ctx *sctx = hmac_ctx(src); + struct hmac_ctx *dctx = hmac_ctx(dst); + struct crypto_shash *hash; + + hash = crypto_clone_shash(sctx->hash); + if (IS_ERR(hash)) + return PTR_ERR(hash); + + dctx->hash = hash; + return 0; +} + static void hmac_exit_tfm(struct crypto_shash *parent) { struct hmac_ctx *ctx = hmac_ctx(parent); @@ -227,6 +241,7 @@ static int hmac_create(struct crypto_template *tmpl, struct rtattr **tb) inst->alg.import = hmac_import; inst->alg.setkey = hmac_setkey; inst->alg.init_tfm = hmac_init_tfm; + inst->alg.clone_tfm = hmac_clone_tfm; inst->alg.exit_tfm = hmac_exit_tfm; inst->free = shash_free_singlespawn_instance; |