154 		struct iv_tcw_private tcw;  member
537 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_dtr()  local
539 	kzfree(tcw->iv_seed);  in crypt_iv_tcw_dtr()
540 	tcw->iv_seed = NULL;  in crypt_iv_tcw_dtr()
541 	kzfree(tcw->whitening);  in crypt_iv_tcw_dtr()
542 	tcw->whitening = NULL;  in crypt_iv_tcw_dtr()
544 	if (tcw->crc32_tfm && !IS_ERR(tcw->crc32_tfm))  in crypt_iv_tcw_dtr()
545 		crypto_free_shash(tcw->crc32_tfm);  in crypt_iv_tcw_dtr()
546 	tcw->crc32_tfm = NULL;  in crypt_iv_tcw_dtr()
552 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_ctr()  local
564 	tcw->crc32_tfm = crypto_alloc_shash("crc32", 0, 0);  in crypt_iv_tcw_ctr()
565 	if (IS_ERR(tcw->crc32_tfm)) {  in crypt_iv_tcw_ctr()
567 		return PTR_ERR(tcw->crc32_tfm);  in crypt_iv_tcw_ctr()
570 	tcw->iv_seed = kzalloc(cc->iv_size, GFP_KERNEL);  in crypt_iv_tcw_ctr()
571 	tcw->whitening = kzalloc(TCW_WHITENING_SIZE, GFP_KERNEL);  in crypt_iv_tcw_ctr()
572 	if (!tcw->iv_seed || !tcw->whitening) {  in crypt_iv_tcw_ctr()
583 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_init()  local
586 	memcpy(tcw->iv_seed, &cc->key[key_offset], cc->iv_size);  in crypt_iv_tcw_init()
587 	memcpy(tcw->whitening, &cc->key[key_offset + cc->iv_size],  in crypt_iv_tcw_init()
595 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_wipe()  local
597 	memset(tcw->iv_seed, 0, cc->iv_size);  in crypt_iv_tcw_wipe()
598 	memset(tcw->whitening, 0, TCW_WHITENING_SIZE);  in crypt_iv_tcw_wipe()
607 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_whitening()  local
610 	SHASH_DESC_ON_STACK(desc, tcw->crc32_tfm);  in crypt_iv_tcw_whitening()
614 	crypto_xor_cpy(buf, tcw->whitening, (u8 *)&sector, 8);  in crypt_iv_tcw_whitening()
615 	crypto_xor_cpy(&buf[8], tcw->whitening + 8, (u8 *)&sector, 8);  in crypt_iv_tcw_whitening()
618 	desc->tfm = tcw->crc32_tfm;  in crypt_iv_tcw_whitening()
645 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_gen()  local
659 	crypto_xor_cpy(iv, tcw->iv_seed, (u8 *)&sector, 8);  in crypt_iv_tcw_gen()
661 		crypto_xor_cpy(&iv[8], tcw->iv_seed + 8, (u8 *)&sector,  in crypt_iv_tcw_gen()