148 		struct iv_tcw_private tcw;  member
616 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_dtr()  local
618 	kzfree(tcw->iv_seed);  in crypt_iv_tcw_dtr()
619 	tcw->iv_seed = NULL;  in crypt_iv_tcw_dtr()
620 	kzfree(tcw->whitening);  in crypt_iv_tcw_dtr()
621 	tcw->whitening = NULL;  in crypt_iv_tcw_dtr()
623 	if (tcw->crc32_tfm && !IS_ERR(tcw->crc32_tfm))  in crypt_iv_tcw_dtr()
624 		crypto_free_shash(tcw->crc32_tfm);  in crypt_iv_tcw_dtr()
625 	tcw->crc32_tfm = NULL;  in crypt_iv_tcw_dtr()
631 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_ctr()  local
638 	tcw->crc32_tfm = crypto_alloc_shash("crc32", 0, 0);  in crypt_iv_tcw_ctr()
639 	if (IS_ERR(tcw->crc32_tfm)) {  in crypt_iv_tcw_ctr()
641 		return PTR_ERR(tcw->crc32_tfm);  in crypt_iv_tcw_ctr()
644 	tcw->iv_seed = kzalloc(cc->iv_size, GFP_KERNEL);  in crypt_iv_tcw_ctr()
645 	tcw->whitening = kzalloc(TCW_WHITENING_SIZE, GFP_KERNEL);  in crypt_iv_tcw_ctr()
646 	if (!tcw->iv_seed || !tcw->whitening) {  in crypt_iv_tcw_ctr()
657 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_init()  local
660 	memcpy(tcw->iv_seed, &cc->key[key_offset], cc->iv_size);  in crypt_iv_tcw_init()
661 	memcpy(tcw->whitening, &cc->key[key_offset + cc->iv_size],  in crypt_iv_tcw_init()
669 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_wipe()  local
671 	memset(tcw->iv_seed, 0, cc->iv_size);  in crypt_iv_tcw_wipe()
672 	memset(tcw->whitening, 0, TCW_WHITENING_SIZE);  in crypt_iv_tcw_wipe()
681 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_whitening()  local
684 	SHASH_DESC_ON_STACK(desc, tcw->crc32_tfm);  in crypt_iv_tcw_whitening()
688 	memcpy(buf, tcw->whitening, TCW_WHITENING_SIZE);  in crypt_iv_tcw_whitening()
693 	desc->tfm = tcw->crc32_tfm;  in crypt_iv_tcw_whitening()
720 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_gen()  local
733 	memcpy(iv, tcw->iv_seed, cc->iv_size);  in crypt_iv_tcw_gen()