149 		struct iv_tcw_private tcw;  member
617 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_dtr()  local
619 	kzfree(tcw->iv_seed);  in crypt_iv_tcw_dtr()
620 	tcw->iv_seed = NULL;  in crypt_iv_tcw_dtr()
621 	kzfree(tcw->whitening);  in crypt_iv_tcw_dtr()
622 	tcw->whitening = NULL;  in crypt_iv_tcw_dtr()
624 	if (tcw->crc32_tfm && !IS_ERR(tcw->crc32_tfm))  in crypt_iv_tcw_dtr()
625 		crypto_free_shash(tcw->crc32_tfm);  in crypt_iv_tcw_dtr()
626 	tcw->crc32_tfm = NULL;  in crypt_iv_tcw_dtr()
632 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_ctr()  local
639 	tcw->crc32_tfm = crypto_alloc_shash("crc32", 0, 0);  in crypt_iv_tcw_ctr()
640 	if (IS_ERR(tcw->crc32_tfm)) {  in crypt_iv_tcw_ctr()
642 		return PTR_ERR(tcw->crc32_tfm);  in crypt_iv_tcw_ctr()
645 	tcw->iv_seed = kzalloc(cc->iv_size, GFP_KERNEL);  in crypt_iv_tcw_ctr()
646 	tcw->whitening = kzalloc(TCW_WHITENING_SIZE, GFP_KERNEL);  in crypt_iv_tcw_ctr()
647 	if (!tcw->iv_seed || !tcw->whitening) {  in crypt_iv_tcw_ctr()
658 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_init()  local
661 	memcpy(tcw->iv_seed, &cc->key[key_offset], cc->iv_size);  in crypt_iv_tcw_init()
662 	memcpy(tcw->whitening, &cc->key[key_offset + cc->iv_size],  in crypt_iv_tcw_init()
670 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_wipe()  local
672 	memset(tcw->iv_seed, 0, cc->iv_size);  in crypt_iv_tcw_wipe()
673 	memset(tcw->whitening, 0, TCW_WHITENING_SIZE);  in crypt_iv_tcw_wipe()
682 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_whitening()  local
685 	SHASH_DESC_ON_STACK(desc, tcw->crc32_tfm);  in crypt_iv_tcw_whitening()
689 	memcpy(buf, tcw->whitening, TCW_WHITENING_SIZE);  in crypt_iv_tcw_whitening()
694 	desc->tfm = tcw->crc32_tfm;  in crypt_iv_tcw_whitening()
721 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_gen()  local
734 	memcpy(iv, tcw->iv_seed, cc->iv_size);  in crypt_iv_tcw_gen()