crypto: testmgr - check that entries in alg_test_descs are in correct order

Patch adds check for alg_test_descs list order, so that accidentically
misplaced entries are found quicker. Duplicate entries are also checked for.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 31 insertions, 0 deletions

diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index b2bc5334c170..a81c154e5d85 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -3054,6 +3054,35 @@ static const struct alg_test_desc alg_test_descs[] = {
         }
 };
 
+static bool alg_test_descs_checked;
+
+static void alg_test_descs_check_order(void)
+{
+        int i;
+
+        /* only check once */
+        if (alg_test_descs_checked)
+                return;
+
+        alg_test_descs_checked = true;
+
+        for (i = 1; i < ARRAY_SIZE(alg_test_descs); i++) {
+                int diff = strcmp(alg_test_descs[i - 1].alg,
+                                  alg_test_descs[i].alg);
+
+                if (WARN_ON(diff > 0)) {
+                        pr_warn("testmgr: alg_test_descs entries in wrong order: '%s' before '%s'\n",
+                                alg_test_descs[i - 1].alg,
+                                alg_test_descs[i].alg);
+                }
+
+                if (WARN_ON(diff == 0)) {
+                        pr_warn("testmgr: duplicate alg_test_descs entry: '%s'\n",
+                                alg_test_descs[i].alg);
+                }
+        }
+}
+
 static int alg_find_test(const char *alg)
 {
         int start = 0;
@@ -3085,6 +3114,8 @@ int alg_test(const char *driver, const char *alg, u32 type, u32 mask)
         int j;
         int rc;
 
+        alg_test_descs_check_order();
+
         if ((type & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_CIPHER) {
                 char nalg[CRYPTO_MAX_ALG_NAME];