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authorEric Biggers <ebiggers@google.com>2018-02-19 23:47:59 -0800
committerHerbert Xu <herbert@gondor.apana.org.au>2018-03-03 00:03:17 +0800
commitd14f0a1fc488af563ec3b3767383190d2b331b5e (patch)
tree579cdc00c95c78a44cd150ceda38b7a0a300514a /crypto/simd.c
parentd800e3430e51e3450d8fa25b2eb2a50e5e413f29 (diff)
crypto: simd - allow registering multiple algorithms at once
Add a function to crypto_simd that registers an array of skcipher algorithms, then allocates and registers the simd wrapper algorithms for them. It assumes the naming scheme where the names of the underlying algorithms are prefixed with two underscores. Also add the corresponding 'unregister' function. Most of the x86 crypto modules will be able to use these. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/simd.c')
-rw-r--r--crypto/simd.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/crypto/simd.c b/crypto/simd.c
index 208226d7f908..ea7240be3001 100644
--- a/crypto/simd.c
+++ b/crypto/simd.c
@@ -221,4 +221,54 @@ void simd_skcipher_free(struct simd_skcipher_alg *salg)
}
EXPORT_SYMBOL_GPL(simd_skcipher_free);
+int simd_register_skciphers_compat(struct skcipher_alg *algs, int count,
+ struct simd_skcipher_alg **simd_algs)
+{
+ int err;
+ int i;
+ const char *algname;
+ const char *drvname;
+ const char *basename;
+ struct simd_skcipher_alg *simd;
+
+ err = crypto_register_skciphers(algs, count);
+ if (err)
+ return err;
+
+ for (i = 0; i < count; i++) {
+ WARN_ON(strncmp(algs[i].base.cra_name, "__", 2));
+ WARN_ON(strncmp(algs[i].base.cra_driver_name, "__", 2));
+ algname = algs[i].base.cra_name + 2;
+ drvname = algs[i].base.cra_driver_name + 2;
+ basename = algs[i].base.cra_driver_name;
+ simd = simd_skcipher_create_compat(algname, drvname, basename);
+ err = PTR_ERR(simd);
+ if (IS_ERR(simd))
+ goto err_unregister;
+ simd_algs[i] = simd;
+ }
+ return 0;
+
+err_unregister:
+ simd_unregister_skciphers(algs, count, simd_algs);
+ return err;
+}
+EXPORT_SYMBOL_GPL(simd_register_skciphers_compat);
+
+void simd_unregister_skciphers(struct skcipher_alg *algs, int count,
+ struct simd_skcipher_alg **simd_algs)
+{
+ int i;
+
+ crypto_unregister_skciphers(algs, count);
+
+ for (i = 0; i < count; i++) {
+ if (simd_algs[i]) {
+ simd_skcipher_free(simd_algs[i]);
+ simd_algs[i] = NULL;
+ }
+ }
+}
+EXPORT_SYMBOL_GPL(simd_unregister_skciphers);
+
MODULE_LICENSE("GPL");