383 	struct encryptor_desc *desc = data;  in encryptor()  local
384 	struct xdr_buf *outbuf = desc->outbuf;  in encryptor()
386 		crypto_sync_skcipher_reqtfm(desc->req);  in encryptor()
388 	int thislen = desc->fraglen + sg->length;  in encryptor()
394 	BUG_ON(desc->fragno > 3);  in encryptor()
396 	page_pos = desc->pos - outbuf->head[0].iov_len;  in encryptor()
400 		in_page = desc->pages[i];  in encryptor()
404 	sg_set_page(&desc->infrags[desc->fragno], in_page, sg->length,  in encryptor()
406 	sg_set_page(&desc->outfrags[desc->fragno], sg_page(sg), sg->length,  in encryptor()
408 	desc->fragno++;  in encryptor()
409 	desc->fraglen += sg->length;  in encryptor()
410 	desc->pos += sg->length;  in encryptor()
418 	sg_mark_end(&desc->infrags[desc->fragno - 1]);  in encryptor()
419 	sg_mark_end(&desc->outfrags[desc->fragno - 1]);  in encryptor()
421 	skcipher_request_set_crypt(desc->req, desc->infrags, desc->outfrags,  in encryptor()
422 				   thislen, desc->iv);  in encryptor()
424 	ret = crypto_skcipher_encrypt(desc->req);  in encryptor()
428 	sg_init_table(desc->infrags, 4);  in encryptor()
429 	sg_init_table(desc->outfrags, 4);  in encryptor()
432 		sg_set_page(&desc->outfrags[0], sg_page(sg), fraglen,  in encryptor()
434 		desc->infrags[0] = desc->outfrags[0];  in encryptor()
435 		sg_assign_page(&desc->infrags[0], in_page);  in encryptor()
436 		desc->fragno = 1;  in encryptor()
437 		desc->fraglen = fraglen;  in encryptor()
439 		desc->fragno = 0;  in encryptor()
440 		desc->fraglen = 0;  in encryptor()
450 	struct encryptor_desc desc;  in gss_encrypt_xdr_buf()  local
458 	memset(desc.iv, 0, sizeof(desc.iv));  in gss_encrypt_xdr_buf()
459 	desc.req = req;  in gss_encrypt_xdr_buf()
460 	desc.pos = offset;  in gss_encrypt_xdr_buf()
461 	desc.outbuf = buf;  in gss_encrypt_xdr_buf()
462 	desc.pages = pages;  in gss_encrypt_xdr_buf()
463 	desc.fragno = 0;  in gss_encrypt_xdr_buf()
464 	desc.fraglen = 0;  in gss_encrypt_xdr_buf()
466 	sg_init_table(desc.infrags, 4);  in gss_encrypt_xdr_buf()
467 	sg_init_table(desc.outfrags, 4);  in gss_encrypt_xdr_buf()
469 	ret = xdr_process_buf(buf, offset, buf->len - offset, encryptor, &desc);  in gss_encrypt_xdr_buf()
485 	struct decryptor_desc *desc = data;  in decryptor()  local
486 	int thislen = desc->fraglen + sg->length;  in decryptor()
488 		crypto_sync_skcipher_reqtfm(desc->req);  in decryptor()
493 	BUG_ON(desc->fragno > 3);  in decryptor()
494 	sg_set_page(&desc->frags[desc->fragno], sg_page(sg), sg->length,  in decryptor()
496 	desc->fragno++;  in decryptor()
497 	desc->fraglen += sg->length;  in decryptor()
505 	sg_mark_end(&desc->frags[desc->fragno - 1]);  in decryptor()
507 	skcipher_request_set_crypt(desc->req, desc->frags, desc->frags,  in decryptor()
508 				   thislen, desc->iv);  in decryptor()
510 	ret = crypto_skcipher_decrypt(desc->req);  in decryptor()
514 	sg_init_table(desc->frags, 4);  in decryptor()
517 		sg_set_page(&desc->frags[0], sg_page(sg), fraglen,  in decryptor()
519 		desc->fragno = 1;  in decryptor()
520 		desc->fraglen = fraglen;  in decryptor()
522 		desc->fragno = 0;  in decryptor()
523 		desc->fraglen = 0;  in decryptor()
533 	struct decryptor_desc desc;  in gss_decrypt_xdr_buf()  local
542 	memset(desc.iv, 0, sizeof(desc.iv));  in gss_decrypt_xdr_buf()
543 	desc.req = req;  in gss_decrypt_xdr_buf()
544 	desc.fragno = 0;  in gss_decrypt_xdr_buf()
545 	desc.fraglen = 0;  in gss_decrypt_xdr_buf()
547 	sg_init_table(desc.frags, 4);  in gss_decrypt_xdr_buf()
549 	ret = xdr_process_buf(buf, offset, buf->len - offset, decryptor, &desc);  in gss_decrypt_xdr_buf()
681 	struct encryptor_desc desc;  in krb5_cbc_cts_encrypt()  local
691 	memset(desc.iv, 0, sizeof(desc.iv));  in krb5_cbc_cts_encrypt()
697 		desc.pos = offset;  in krb5_cbc_cts_encrypt()
698 		desc.fragno = 0;  in krb5_cbc_cts_encrypt()
699 		desc.fraglen = 0;  in krb5_cbc_cts_encrypt()
700 		desc.pages = pages;  in krb5_cbc_cts_encrypt()
701 		desc.outbuf = buf;  in krb5_cbc_cts_encrypt()
702 		desc.req = req;  in krb5_cbc_cts_encrypt()
707 		sg_init_table(desc.infrags, 4);  in krb5_cbc_cts_encrypt()
708 		sg_init_table(desc.outfrags, 4);  in krb5_cbc_cts_encrypt()
710 		err = xdr_process_buf(buf, offset, cbcbytes, encryptor, &desc);  in krb5_cbc_cts_encrypt()
718 				 desc.iv, pages, 1);  in krb5_cbc_cts_encrypt()
723 		memcpy(iv, desc.iv, ivsize);  in krb5_cbc_cts_encrypt()
745 	struct decryptor_desc desc;  in krb5_cbc_cts_decrypt()  local
754 	memset(desc.iv, 0, sizeof(desc.iv));  in krb5_cbc_cts_decrypt()
760 		desc.fragno = 0;  in krb5_cbc_cts_decrypt()
761 		desc.fraglen = 0;  in krb5_cbc_cts_decrypt()
762 		desc.req = req;  in krb5_cbc_cts_decrypt()
767 		sg_init_table(desc.frags, 4);  in krb5_cbc_cts_decrypt()
769 		err = xdr_process_buf(buf, 0, cbcbytes, decryptor, &desc);  in krb5_cbc_cts_decrypt()
776 	return gss_krb5_cts_crypt(cts_tfm, buf, cbcbytes, desc.iv, NULL, 0);  in krb5_cbc_cts_decrypt()