174 		struct iv_tcw_private tcw;  member
573 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_dtr()  local
575 	kfree_sensitive(tcw->iv_seed);  in crypt_iv_tcw_dtr()
576 	tcw->iv_seed = NULL;  in crypt_iv_tcw_dtr()
577 	kfree_sensitive(tcw->whitening);  in crypt_iv_tcw_dtr()
578 	tcw->whitening = NULL;  in crypt_iv_tcw_dtr()
580 	if (tcw->crc32_tfm && !IS_ERR(tcw->crc32_tfm))  in crypt_iv_tcw_dtr()
581 		crypto_free_shash(tcw->crc32_tfm);  in crypt_iv_tcw_dtr()
582 	tcw->crc32_tfm = NULL;  in crypt_iv_tcw_dtr()
588 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_ctr()  local
600 	tcw->crc32_tfm = crypto_alloc_shash("crc32", 0,  in crypt_iv_tcw_ctr()
602 	if (IS_ERR(tcw->crc32_tfm)) {  in crypt_iv_tcw_ctr()
604 		return PTR_ERR(tcw->crc32_tfm);  in crypt_iv_tcw_ctr()
607 	tcw->iv_seed = kzalloc(cc->iv_size, GFP_KERNEL);  in crypt_iv_tcw_ctr()
608 	tcw->whitening = kzalloc(TCW_WHITENING_SIZE, GFP_KERNEL);  in crypt_iv_tcw_ctr()
609 	if (!tcw->iv_seed || !tcw->whitening) {  in crypt_iv_tcw_ctr()
620 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_init()  local
623 	memcpy(tcw->iv_seed, &cc->key[key_offset], cc->iv_size);  in crypt_iv_tcw_init()
624 	memcpy(tcw->whitening, &cc->key[key_offset + cc->iv_size],  in crypt_iv_tcw_init()
632 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_wipe()  local
634 	memset(tcw->iv_seed, 0, cc->iv_size);  in crypt_iv_tcw_wipe()
635 	memset(tcw->whitening, 0, TCW_WHITENING_SIZE);  in crypt_iv_tcw_wipe()
644 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_whitening()  local
647 	SHASH_DESC_ON_STACK(desc, tcw->crc32_tfm);  in crypt_iv_tcw_whitening()
651 	crypto_xor_cpy(buf, tcw->whitening, (u8 *)&sector, 8);  in crypt_iv_tcw_whitening()
652 	crypto_xor_cpy(&buf[8], tcw->whitening + 8, (u8 *)&sector, 8);  in crypt_iv_tcw_whitening()
655 	desc->tfm = tcw->crc32_tfm;  in crypt_iv_tcw_whitening()
682 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_gen()  local
696 	crypto_xor_cpy(iv, tcw->iv_seed, (u8 *)&sector, 8);  in crypt_iv_tcw_gen()
698 		crypto_xor_cpy(&iv[8], tcw->iv_seed + 8, (u8 *)&sector,  in crypt_iv_tcw_gen()