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crypto: tcrypt - Add debug prints

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tcrypt is very tight-lipped when it succeeds, but a bit more feedback
would be useful when developing or debugging crypto drivers, especially
since even a successful run ends with the module failing to insert. Add
a couple of debug prints, which can be enabled with dynamic debug:

Before:

 # insmod tcrypt.ko mode=10
 insmod: can't insert 'tcrypt.ko': Resource temporarily unavailable

After:

 # insmod tcrypt.ko mode=10 dyndbg
 tcrypt: testing ecb(aes)
 tcrypt: testing cbc(aes)
 tcrypt: testing lrw(aes)
 tcrypt: testing xts(aes)
 tcrypt: testing ctr(aes)
 tcrypt: testing rfc3686(ctr(aes))
 tcrypt: all tests passed
 insmod: can't insert 'tcrypt.ko': Resource temporarily unavailable

Signed-off-by: Rabin Vincent <rabinv@axis.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Rabin Vincent 2017-01-18 14:54:05 +01:00 committed by Herbert Xu
parent 3bfb2e6b32
commit 76512f2d8c
1 changed files with 6 additions and 0 deletions
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6
crypto/tcrypt.c
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@ -22,6 +22,8 @@
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <crypto/aead.h>
#include <crypto/hash.h>
#include <crypto/skcipher.h>
@ -1010,6 +1012,8 @@ static inline int tcrypt_test(const char *alg)
{
int ret;
pr_debug("testing %s\n", alg);
ret = alg_test(alg, alg, 0, 0);
/* non-fips algs return -EINVAL in fips mode */
if (fips_enabled && ret == -EINVAL)
@ -2059,6 +2063,8 @@ static int __init tcrypt_mod_init(void)
if (err) {
printk(KERN_ERR "tcrypt: one or more tests failed!\n");
goto err_free_tv;
} else {
pr_debug("all tests passed\n");
}
/* We intentionaly return -EAGAIN to prevent keeping the module,