28 	unsigned int	quadlen = XDR_QUADLEN(obj->len);  in xdr_encode_netobj()
31 	*p++ = cpu_to_be32(obj->len);  in xdr_encode_netobj()
32 	memcpy(p, obj->data, obj->len);  in xdr_encode_netobj()
33 	return p + XDR_QUADLEN(obj->len);  in xdr_encode_netobj()
40 	unsigned int	len;  in xdr_decode_netobj()  local
42 	if ((len = be32_to_cpu(*p++)) > XDR_MAX_NETOBJ)  in xdr_decode_netobj()
44 	obj->len  = len;  in xdr_decode_netobj()
46 	return p + XDR_QUADLEN(len);  in xdr_decode_netobj()
106 	u32 len;  in xdr_decode_string_inplace()  local
108 	len = be32_to_cpu(*p++);  in xdr_decode_string_inplace()
109 	if (len > maxlen)  in xdr_decode_string_inplace()
111 	*lenp = len;  in xdr_decode_string_inplace()
113 	return p + XDR_QUADLEN(len);  in xdr_decode_string_inplace()
124 xdr_terminate_string(struct xdr_buf *buf, const u32 len)  in xdr_terminate_string()  argument
129 	kaddr[buf->page_base + len] = '\0';  in xdr_terminate_string()
178 		 struct page **pages, unsigned int base, unsigned int len)  in xdr_inline_pages()  argument
189 	xdr->page_len = len;  in xdr_inline_pages()
196 	xdr->buflen += len;  in xdr_inline_pages()
220 		size_t pgfrom_base, size_t len)  in _shift_data_right_pages()  argument
228 	pgto_base += len;  in _shift_data_right_pages()
229 	pgfrom_base += len;  in _shift_data_right_pages()
248 		copy = len;  in _shift_data_right_pages()
266 	} while ((len -= copy) != 0);  in _shift_data_right_pages()
280 _copy_to_pages(struct page **pages, size_t pgbase, const char *p, size_t len)  in _copy_to_pages()  argument
291 		if (copy > len)  in _copy_to_pages()
292 			copy = len;  in _copy_to_pages()
298 		len -= copy;  in _copy_to_pages()
299 		if (len == 0)  in _copy_to_pages()
324 _copy_from_pages(char *p, struct page **pages, size_t pgbase, size_t len)  in _copy_from_pages()  argument
335 		if (copy > len)  in _copy_from_pages()
336 			copy = len;  in _copy_from_pages()
349 	} while ((len -= copy) != 0);  in _copy_from_pages()
363 xdr_shrink_bufhead(struct xdr_buf *buf, size_t len)  in xdr_shrink_bufhead()  argument
374 	WARN_ON_ONCE(len > head->iov_len);  in xdr_shrink_bufhead()
375 	if (len > head->iov_len)  in xdr_shrink_bufhead()
376 		len = head->iov_len;  in xdr_shrink_bufhead()
380 		if (tail->iov_len > len) {  in xdr_shrink_bufhead()
381 			copy = tail->iov_len - len;  in xdr_shrink_bufhead()
382 			memmove((char *)tail->iov_base + len,  in xdr_shrink_bufhead()
387 		copy = len;  in xdr_shrink_bufhead()
390 		offs = len - copy;  in xdr_shrink_bufhead()
398 					buf->page_base + pglen + offs - len,  in xdr_shrink_bufhead()
403 		if (len > pglen) {  in xdr_shrink_bufhead()
404 			offs = copy = len - pglen;  in xdr_shrink_bufhead()
416 		if (pglen > len)  in xdr_shrink_bufhead()
418 					buf->page_base + len,  in xdr_shrink_bufhead()
420 					pglen - len);  in xdr_shrink_bufhead()
421 		copy = len;  in xdr_shrink_bufhead()
422 		if (len > pglen)  in xdr_shrink_bufhead()
425 				(char *)head->iov_base + head->iov_len - len,  in xdr_shrink_bufhead()
429 	head->iov_len -= len;  in xdr_shrink_bufhead()
430 	buf->buflen -= len;  in xdr_shrink_bufhead()
432 	if (buf->len > buf->buflen)  in xdr_shrink_bufhead()
433 		buf->len = buf->buflen;  in xdr_shrink_bufhead()
448 xdr_shrink_pagelen(struct xdr_buf *buf, size_t len)  in xdr_shrink_pagelen()  argument
458 	BUG_ON (len > pglen);  in xdr_shrink_pagelen()
466 		if (len < free_space)  in xdr_shrink_pagelen()
467 			free_space = len;  in xdr_shrink_pagelen()
470 		copy = len;  in xdr_shrink_pagelen()
471 		if (tail->iov_len > len) {  in xdr_shrink_pagelen()
472 			char *p = (char *)tail->iov_base + len;  in xdr_shrink_pagelen()
473 			memmove(p, tail->iov_base, tail->iov_len - len);  in xdr_shrink_pagelen()
474 			result += tail->iov_len - len;  in xdr_shrink_pagelen()
479 				buf->pages, buf->page_base + pglen - len,  in xdr_shrink_pagelen()
483 	buf->page_len -= len;  in xdr_shrink_pagelen()
484 	buf->buflen -= len;  in xdr_shrink_pagelen()
486 	if (buf->len > buf->buflen)  in xdr_shrink_pagelen()
487 		buf->len = buf->buflen;  in xdr_shrink_pagelen()
493 xdr_shift_buf(struct xdr_buf *buf, size_t len)  in xdr_shift_buf()  argument
495 	xdr_shrink_bufhead(buf, len);  in xdr_shift_buf()
505 	return (unsigned int)(XDR_QUADLEN(xdr->buf->len) - xdr->nwords) << 2;  in xdr_stream_pos()
538 		size_t len;  in xdr_init_encode()  local
541 		len = (char *)p - (char *)xdr->p;  in xdr_init_encode()
543 		buf->len += len;  in xdr_init_encode()
544 		iov->iov_len += len;  in xdr_init_encode()
586 	if (xdr->buf->len + nbytes > xdr->buf->buflen)  in xdr_get_next_encode_buffer()
611 	space_left = xdr->buf->buflen - xdr->buf->len;  in xdr_get_next_encode_buffer()
614 	xdr->buf->len += nbytes;  in xdr_get_next_encode_buffer()
647 	xdr->buf->len += nbytes;  in xdr_reserve_space()
671 void xdr_truncate_encode(struct xdr_stream *xdr, size_t len)  in xdr_truncate_encode()  argument
679 	if (len > buf->len) {  in xdr_truncate_encode()
685 	fraglen = min_t(int, buf->len - len, tail->iov_len);  in xdr_truncate_encode()
687 	buf->len -= fraglen;  in xdr_truncate_encode()
695 	fraglen = min_t(int, buf->len - len, buf->page_len);  in xdr_truncate_encode()
697 	buf->len -= fraglen;  in xdr_truncate_encode()
714 	head->iov_len = len;  in xdr_truncate_encode()
715 	buf->len = len;  in xdr_truncate_encode()
737 	int end_offset = buf->len + left_in_this_buf;  in xdr_restrict_buflen()
739 	if (newbuflen < 0 || newbuflen < buf->len)  in xdr_restrict_buflen()
759 		 unsigned int len)  in xdr_write_pages()  argument
765 	buf->page_len = len;  in xdr_write_pages()
771 	if (len & 3) {  in xdr_write_pages()
772 		unsigned int pad = 4 - (len & 3);  in xdr_write_pages()
775 		iov->iov_base = (char *)xdr->p + (len & 3);  in xdr_write_pages()
777 		len += pad;  in xdr_write_pages()
780 	buf->buflen += len;  in xdr_write_pages()
781 	buf->len += len;  in xdr_write_pages()
786 		unsigned int len)  in xdr_set_iov()  argument
788 	if (len > iov->iov_len)  in xdr_set_iov()
789 		len = iov->iov_len;  in xdr_set_iov()
791 	xdr->end = (__be32*)(iov->iov_base + len);  in xdr_set_iov()
797 		unsigned int base, unsigned int len)  in xdr_set_page_base()  argument
809 	if (len > maxlen)  in xdr_set_page_base()
810 		len = maxlen;  in xdr_set_page_base()
821 	pgend = pgoff + len;  in xdr_set_page_base()
864 	xdr->nwords = XDR_QUADLEN(buf->len);  in xdr_init_decode()
866 		xdr_set_iov(xdr, buf->head, buf->len);  in xdr_init_decode()
868 		xdr_set_page_base(xdr, 0, buf->len);  in xdr_init_decode()
870 		xdr_set_iov(xdr, buf->head, buf->len);  in xdr_init_decode()
887 			   struct page **pages, unsigned int len)  in xdr_init_decode_pages()  argument
891 	buf->page_len =  len;  in xdr_init_decode_pages()
892 	buf->buflen =  len;  in xdr_init_decode_pages()
893 	buf->len = len;  in xdr_init_decode_pages()
983 static unsigned int xdr_align_pages(struct xdr_stream *xdr, unsigned int len)  in xdr_align_pages()  argument
987 	unsigned int nwords = XDR_QUADLEN(len);  in xdr_align_pages()
1000 		xdr->nwords = XDR_QUADLEN(buf->len - cur);  in xdr_align_pages()
1005 		len = nwords << 2;  in xdr_align_pages()
1007 	if (buf->page_len <= len)  in xdr_align_pages()
1008 		len = buf->page_len;  in xdr_align_pages()
1011 		offset = buf->page_len - len;  in xdr_align_pages()
1014 		xdr->nwords = XDR_QUADLEN(buf->len - cur);  in xdr_align_pages()
1016 	return len;  in xdr_align_pages()
1030 unsigned int xdr_read_pages(struct xdr_stream *xdr, unsigned int len)  in xdr_read_pages()  argument
1038 	len = xdr_align_pages(xdr, len);  in xdr_read_pages()
1039 	if (len == 0)  in xdr_read_pages()
1041 	nwords = XDR_QUADLEN(len);  in xdr_read_pages()
1042 	padding = (nwords << 2) - len;  in xdr_read_pages()
1057 	return len;  in xdr_read_pages()
1071 void xdr_enter_page(struct xdr_stream *xdr, unsigned int len)  in xdr_enter_page()  argument
1073 	len = xdr_align_pages(xdr, len);  in xdr_enter_page()
1078 	if (len != 0)  in xdr_enter_page()
1079 		xdr_set_page_base(xdr, 0, len);  in xdr_enter_page()
1091 	buf->buflen = buf->len = iov->iov_len;  in xdr_buf_from_iov()
1111 			unsigned int base, unsigned int len)  in xdr_buf_subsegment()  argument
1113 	subbuf->buflen = subbuf->len = len;  in xdr_buf_subsegment()
1116 		subbuf->head[0].iov_len = min_t(unsigned int, len,  in xdr_buf_subsegment()
1118 		len -= subbuf->head[0].iov_len;  in xdr_buf_subsegment()
1126 		subbuf->page_len = min(buf->page_len - base, len);  in xdr_buf_subsegment()
1130 		len -= subbuf->page_len;  in xdr_buf_subsegment()
1139 		subbuf->tail[0].iov_len = min_t(unsigned int, len,  in xdr_buf_subsegment()
1141 		len -= subbuf->tail[0].iov_len;  in xdr_buf_subsegment()
1148 	if (base || len)  in xdr_buf_subsegment()
1154 static void __read_bytes_from_xdr_buf(struct xdr_buf *subbuf, void *obj, unsigned int len)  in __read_bytes_from_xdr_buf()  argument
1158 	this_len = min_t(unsigned int, len, subbuf->head[0].iov_len);  in __read_bytes_from_xdr_buf()
1160 	len -= this_len;  in __read_bytes_from_xdr_buf()
1162 	this_len = min_t(unsigned int, len, subbuf->page_len);  in __read_bytes_from_xdr_buf()
1165 	len -= this_len;  in __read_bytes_from_xdr_buf()
1167 	this_len = min_t(unsigned int, len, subbuf->tail[0].iov_len);  in __read_bytes_from_xdr_buf()
1172 int read_bytes_from_xdr_buf(struct xdr_buf *buf, unsigned int base, void *obj, unsigned int len)  in read_bytes_from_xdr_buf()  argument
1177 	status = xdr_buf_subsegment(buf, &subbuf, base, len);  in read_bytes_from_xdr_buf()
1180 	__read_bytes_from_xdr_buf(&subbuf, obj, len);  in read_bytes_from_xdr_buf()
1185 static void __write_bytes_to_xdr_buf(struct xdr_buf *subbuf, void *obj, unsigned int len)  in __write_bytes_to_xdr_buf()  argument
1189 	this_len = min_t(unsigned int, len, subbuf->head[0].iov_len);  in __write_bytes_to_xdr_buf()
1191 	len -= this_len;  in __write_bytes_to_xdr_buf()
1193 	this_len = min_t(unsigned int, len, subbuf->page_len);  in __write_bytes_to_xdr_buf()
1196 	len -= this_len;  in __write_bytes_to_xdr_buf()
1198 	this_len = min_t(unsigned int, len, subbuf->tail[0].iov_len);  in __write_bytes_to_xdr_buf()
1203 int write_bytes_to_xdr_buf(struct xdr_buf *buf, unsigned int base, void *obj, unsigned int len)  in write_bytes_to_xdr_buf()  argument
1208 	status = xdr_buf_subsegment(buf, &subbuf, base, len);  in write_bytes_to_xdr_buf()
1211 	__write_bytes_to_xdr_buf(&subbuf, obj, len);  in write_bytes_to_xdr_buf()
1256 	if (xdr_decode_word(buf, offset, &mic->len))  in xdr_buf_read_mic()
1262 	if (offset < boundary && (offset + mic->len) > boundary)  in xdr_buf_read_mic()
1267 	if (offset < boundary && (offset + mic->len) > boundary)  in xdr_buf_read_mic()
1270 	if (xdr_buf_subsegment(buf, &subbuf, offset, mic->len))  in xdr_buf_read_mic()
1275 	if (subbuf.head[0].iov_len == mic->len)  in xdr_buf_read_mic()
1279 	if (subbuf.tail[0].iov_len == mic->len)  in xdr_buf_read_mic()
1283 	if (mic->len > buf->buflen - buf->len)  in xdr_buf_read_mic()
1289 	__read_bytes_from_xdr_buf(&subbuf, mic->data, mic->len);  in xdr_buf_read_mic()
1311 				    desc->elem_size > buf->len)  in xdr_xcode_array2()
1493 	if (base >= buf->len)  in xdr_decode_array2()
1513 xdr_process_buf(struct xdr_buf *buf, unsigned int offset, unsigned int len,  in xdr_process_buf()  argument
1526 		if (thislen > len)  in xdr_process_buf()
1527 			thislen = len;  in xdr_process_buf()
1533 		len -= thislen;  in xdr_process_buf()
1535 	if (len == 0)  in xdr_process_buf()
1542 		if (page_len > len)  in xdr_process_buf()
1543 			page_len = len;  in xdr_process_buf()
1544 		len -= page_len;  in xdr_process_buf()
1562 	if (len == 0)  in xdr_process_buf()
1566 		if (thislen > len)  in xdr_process_buf()
1567 			thislen = len;  in xdr_process_buf()
1570 		len -= thislen;  in xdr_process_buf()
1572 	if (len != 0)  in xdr_process_buf()