149 		struct iv_tcw_private tcw;  member
619 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_dtr()  local
621 	kzfree(tcw->iv_seed);  in crypt_iv_tcw_dtr()
622 	tcw->iv_seed = NULL;  in crypt_iv_tcw_dtr()
623 	kzfree(tcw->whitening);  in crypt_iv_tcw_dtr()
624 	tcw->whitening = NULL;  in crypt_iv_tcw_dtr()
626 	if (tcw->crc32_tfm && !IS_ERR(tcw->crc32_tfm))  in crypt_iv_tcw_dtr()
627 		crypto_free_shash(tcw->crc32_tfm);  in crypt_iv_tcw_dtr()
628 	tcw->crc32_tfm = NULL;  in crypt_iv_tcw_dtr()
634 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_ctr()  local
641 	tcw->crc32_tfm = crypto_alloc_shash("crc32", 0, 0);  in crypt_iv_tcw_ctr()
642 	if (IS_ERR(tcw->crc32_tfm)) {  in crypt_iv_tcw_ctr()
644 		return PTR_ERR(tcw->crc32_tfm);  in crypt_iv_tcw_ctr()
647 	tcw->iv_seed = kzalloc(cc->iv_size, GFP_KERNEL);  in crypt_iv_tcw_ctr()
648 	tcw->whitening = kzalloc(TCW_WHITENING_SIZE, GFP_KERNEL);  in crypt_iv_tcw_ctr()
649 	if (!tcw->iv_seed || !tcw->whitening) {  in crypt_iv_tcw_ctr()
660 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_init()  local
663 	memcpy(tcw->iv_seed, &cc->key[key_offset], cc->iv_size);  in crypt_iv_tcw_init()
664 	memcpy(tcw->whitening, &cc->key[key_offset + cc->iv_size],  in crypt_iv_tcw_init()
672 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_wipe()  local
674 	memset(tcw->iv_seed, 0, cc->iv_size);  in crypt_iv_tcw_wipe()
675 	memset(tcw->whitening, 0, TCW_WHITENING_SIZE);  in crypt_iv_tcw_wipe()
684 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_whitening()  local
687 	SHASH_DESC_ON_STACK(desc, tcw->crc32_tfm);  in crypt_iv_tcw_whitening()
691 	memcpy(buf, tcw->whitening, TCW_WHITENING_SIZE);  in crypt_iv_tcw_whitening()
696 	desc->tfm = tcw->crc32_tfm;  in crypt_iv_tcw_whitening()
723 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;  in crypt_iv_tcw_gen()  local
736 	memcpy(iv, tcw->iv_seed, cc->iv_size);  in crypt_iv_tcw_gen()