166 		struct iv_tcw_private tcw;  member
564 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_dtr()  local
566 	kfree_sensitive(tcw->iv_seed);  in crypt_iv_tcw_dtr()
567 	tcw->iv_seed = NULL;  in crypt_iv_tcw_dtr()
568 	kfree_sensitive(tcw->whitening);  in crypt_iv_tcw_dtr()
569 	tcw->whitening = NULL;  in crypt_iv_tcw_dtr()
571 	if (tcw->crc32_tfm && !IS_ERR(tcw->crc32_tfm))  in crypt_iv_tcw_dtr()
572 		crypto_free_shash(tcw->crc32_tfm);  in crypt_iv_tcw_dtr()
573 	tcw->crc32_tfm = NULL;  in crypt_iv_tcw_dtr()
579 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_ctr()  local
591 	tcw->crc32_tfm = crypto_alloc_shash("crc32", 0,  in crypt_iv_tcw_ctr()
593 	if (IS_ERR(tcw->crc32_tfm)) {  in crypt_iv_tcw_ctr()
595 		return PTR_ERR(tcw->crc32_tfm);  in crypt_iv_tcw_ctr()
598 	tcw->iv_seed = kzalloc(cc->iv_size, GFP_KERNEL);  in crypt_iv_tcw_ctr()
599 	tcw->whitening = kzalloc(TCW_WHITENING_SIZE, GFP_KERNEL);  in crypt_iv_tcw_ctr()
600 	if (!tcw->iv_seed || !tcw->whitening) {  in crypt_iv_tcw_ctr()
611 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_init()  local
614 	memcpy(tcw->iv_seed, &cc->key[key_offset], cc->iv_size);  in crypt_iv_tcw_init()
615 	memcpy(tcw->whitening, &cc->key[key_offset + cc->iv_size],  in crypt_iv_tcw_init()
623 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_wipe()  local
625 	memset(tcw->iv_seed, 0, cc->iv_size);  in crypt_iv_tcw_wipe()
626 	memset(tcw->whitening, 0, TCW_WHITENING_SIZE);  in crypt_iv_tcw_wipe()
635 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_whitening()  local
638 	SHASH_DESC_ON_STACK(desc, tcw->crc32_tfm);  in crypt_iv_tcw_whitening()
642 	crypto_xor_cpy(buf, tcw->whitening, (u8 *)&sector, 8);  in crypt_iv_tcw_whitening()
643 	crypto_xor_cpy(&buf[8], tcw->whitening + 8, (u8 *)&sector, 8);  in crypt_iv_tcw_whitening()
646 	desc->tfm = tcw->crc32_tfm;  in crypt_iv_tcw_whitening()
673 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_gen()  local
687 	crypto_xor_cpy(iv, tcw->iv_seed, (u8 *)&sector, 8);  in crypt_iv_tcw_gen()
689 		crypto_xor_cpy(&iv[8], tcw->iv_seed + 8, (u8 *)&sector,  in crypt_iv_tcw_gen()