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