#include <crypto/aes.h>
 #include <crypto/algapi.h>
 #include <crypto/hash.h>
+#include <crypto/gcm.h>
 #include <crypto/sha.h>
 #include <crypto/authenc.h>
 #include <crypto/ctr.h>
        if (get_aead_subtype(tfm) ==
            CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) {
                memcpy(reqctx->iv, aeadctx->salt, 4);
-               memcpy(reqctx->iv + 4, req->iv, 8);
+               memcpy(reqctx->iv + 4, req->iv, GCM_RFC4106_IV_SIZE);
        } else {
-               memcpy(reqctx->iv, req->iv, 12);
+               memcpy(reqctx->iv, req->iv, GCM_AES_IV_SIZE);
        }
        *((unsigned int *)(reqctx->iv + 12)) = htonl(0x01);
 
                                                sizeof(struct chcr_aead_ctx) +
                                                sizeof(struct chcr_gcm_ctx),
                        },
-                       .ivsize = 12,
+                       .ivsize = GCM_AES_IV_SIZE,
                        .maxauthsize = GHASH_DIGEST_SIZE,
                        .setkey = chcr_gcm_setkey,
                        .setauthsize = chcr_gcm_setauthsize,
                                                sizeof(struct chcr_gcm_ctx),
 
                        },
-                       .ivsize = 8,
+                       .ivsize = GCM_RFC4106_IV_SIZE,
                        .maxauthsize    = GHASH_DIGEST_SIZE,
                        .setkey = chcr_gcm_setkey,
                        .setauthsize    = chcr_4106_4309_setauthsize,