1/*
2 * Copyright(c) 2004 - 2006 Intel Corporation. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the Free
6 * Software Foundation; either version 2 of the License, or (at your option)
7 * any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc., 59
16 * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called COPYING.
20 */
21#ifndef NETDMA_H
22#define NETDMA_H
23#ifdef CONFIG_NET_DMA
24#include <linux/dmaengine.h>
25#include <linux/skbuff.h>
26
27static inline struct dma_chan *get_softnet_dma(void)
28{
29	struct dma_chan *chan;
30	rcu_read_lock();
31	chan = rcu_dereference(__get_cpu_var(softnet_data).net_dma);
32	if (chan)
33		dma_chan_get(chan);
34	rcu_read_unlock();
35	return chan;
36}
37
38int dma_skb_copy_datagram_iovec(struct dma_chan* chan,
39		struct sk_buff *skb, int offset, struct iovec *to,
40		size_t len, struct dma_pinned_list *pinned_list);
41
42#endif /* CONFIG_NET_DMA */
43#endif /* NETDMA_H */
44