+++ /dev/null
-/* $OpenBSD: criov.c,v 1.9 2002/01/29 15:48:29 jason Exp $ */
-
-/*
- * Linux port done by David McCullough <david_mccullough@mcafee.com>
- * Copyright (C) 2006-2010 David McCullough
- * Copyright (C) 2004-2005 Intel Corporation.
- * The license and original author are listed below.
- *
- * Copyright (c) 1999 Theo de Raadt
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
-__FBSDID("$FreeBSD: src/sys/opencrypto/criov.c,v 1.5 2006/06/04 22:15:13 pjd Exp $");
- */
-
-#ifndef AUTOCONF_INCLUDED
-#include <linux/config.h>
-#endif
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/uio.h>
-#include <linux/skbuff.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <asm/io.h>
-
-#include <uio.h>
-#include <cryptodev.h>
-
-/*
- * This macro is only for avoiding code duplication, as we need to skip
- * given number of bytes in the same way in three functions below.
- */
-#define CUIO_SKIP() do { \
- KASSERT(off >= 0, ("%s: off %d < 0", __func__, off)); \
- KASSERT(len >= 0, ("%s: len %d < 0", __func__, len)); \
- while (off > 0) { \
- KASSERT(iol >= 0, ("%s: empty in skip", __func__)); \
- if (off < iov->iov_len) \
- break; \
- off -= iov->iov_len; \
- iol--; \
- iov++; \
- } \
-} while (0)
-
-void
-cuio_copydata(struct uio* uio, int off, int len, caddr_t cp)
-{
- struct iovec *iov = uio->uio_iov;
- int iol = uio->uio_iovcnt;
- unsigned count;
-
- CUIO_SKIP();
- while (len > 0) {
- KASSERT(iol >= 0, ("%s: empty", __func__));
- count = min((int)(iov->iov_len - off), len);
- memcpy(cp, ((caddr_t)iov->iov_base) + off, count);
- len -= count;
- cp += count;
- off = 0;
- iol--;
- iov++;
- }
-}
-
-void
-cuio_copyback(struct uio* uio, int off, int len, caddr_t cp)
-{
- struct iovec *iov = uio->uio_iov;
- int iol = uio->uio_iovcnt;
- unsigned count;
-
- CUIO_SKIP();
- while (len > 0) {
- KASSERT(iol >= 0, ("%s: empty", __func__));
- count = min((int)(iov->iov_len - off), len);
- memcpy(((caddr_t)iov->iov_base) + off, cp, count);
- len -= count;
- cp += count;
- off = 0;
- iol--;
- iov++;
- }
-}
-
-/*
- * Return a pointer to iov/offset of location in iovec list.
- */
-struct iovec *
-cuio_getptr(struct uio *uio, int loc, int *off)
-{
- struct iovec *iov = uio->uio_iov;
- int iol = uio->uio_iovcnt;
-
- while (loc >= 0) {
- /* Normal end of search */
- if (loc < iov->iov_len) {
- *off = loc;
- return (iov);
- }
-
- loc -= iov->iov_len;
- if (iol == 0) {
- if (loc == 0) {
- /* Point at the end of valid data */
- *off = iov->iov_len;
- return (iov);
- } else
- return (NULL);
- } else {
- iov++, iol--;
- }
- }
-
- return (NULL);
-}
-
-EXPORT_SYMBOL(cuio_copyback);
-EXPORT_SYMBOL(cuio_copydata);
-EXPORT_SYMBOL(cuio_getptr);
-
-
-static void
-skb_copy_bits_back(struct sk_buff *skb, int offset, caddr_t cp, int len)
-{
- int i;
- if (offset < skb_headlen(skb)) {
- memcpy(skb->data + offset, cp, min_t(int, skb_headlen(skb), len));
- len -= skb_headlen(skb);
- cp += skb_headlen(skb);
- }
- offset -= skb_headlen(skb);
- for (i = 0; len > 0 && i < skb_shinfo(skb)->nr_frags; i++) {
- if (offset < skb_shinfo(skb)->frags[i].size) {
- memcpy(page_address(skb_shinfo(skb)->frags[i].page) +
- skb_shinfo(skb)->frags[i].page_offset,
- cp, min_t(int, skb_shinfo(skb)->frags[i].size, len));
- len -= skb_shinfo(skb)->frags[i].size;
- cp += skb_shinfo(skb)->frags[i].size;
- }
- offset -= skb_shinfo(skb)->frags[i].size;
- }
-}
-
-void
-crypto_copyback(int flags, caddr_t buf, int off, int size, caddr_t in)
-{
-
- if ((flags & CRYPTO_F_SKBUF) != 0)
- skb_copy_bits_back((struct sk_buff *)buf, off, in, size);
- else if ((flags & CRYPTO_F_IOV) != 0)
- cuio_copyback((struct uio *)buf, off, size, in);
- else
- bcopy(in, buf + off, size);
-}
-
-void
-crypto_copydata(int flags, caddr_t buf, int off, int size, caddr_t out)
-{
-
- if ((flags & CRYPTO_F_SKBUF) != 0)
- skb_copy_bits((struct sk_buff *)buf, off, out, size);
- else if ((flags & CRYPTO_F_IOV) != 0)
- cuio_copydata((struct uio *)buf, off, size, out);
- else
- bcopy(buf + off, out, size);
-}
-
-int
-crypto_apply(int flags, caddr_t buf, int off, int len,
- int (*f)(void *, void *, u_int), void *arg)
-{
-#if 0
- int error;
-
- if ((flags & CRYPTO_F_SKBUF) != 0)
- error = XXXXXX((struct mbuf *)buf, off, len, f, arg);
- else if ((flags & CRYPTO_F_IOV) != 0)
- error = cuio_apply((struct uio *)buf, off, len, f, arg);
- else
- error = (*f)(arg, buf + off, len);
- return (error);
-#else
- KASSERT(0, ("crypto_apply not implemented!\n"));
-#endif
- return 0;
-}
-
-EXPORT_SYMBOL(crypto_copyback);
-EXPORT_SYMBOL(crypto_copydata);
-EXPORT_SYMBOL(crypto_apply);
-
projects / openwrt / openwrt.git / blobdiff