Chris Leech | db21733 | 2006-06-17 21:24:58 -0700 | [diff] [blame] | 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 | #include <linux/config.h> |
| 24 | #ifdef CONFIG_NET_DMA |
| 25 | #include <linux/dmaengine.h> |
Chris Leech | de5506e | 2006-05-23 17:50:37 -0700 | [diff] [blame] | 26 | #include <linux/skbuff.h> |
Chris Leech | db21733 | 2006-06-17 21:24:58 -0700 | [diff] [blame] | 27 | |
| 28 | static inline struct dma_chan *get_softnet_dma(void) |
| 29 | { |
| 30 | struct dma_chan *chan; |
| 31 | rcu_read_lock(); |
Alexey Dobriyan | 29bbd72 | 2006-08-02 15:02:31 -0700 | [diff] [blame] | 32 | chan = rcu_dereference(__get_cpu_var(softnet_data).net_dma); |
Chris Leech | db21733 | 2006-06-17 21:24:58 -0700 | [diff] [blame] | 33 | if (chan) |
| 34 | dma_chan_get(chan); |
| 35 | rcu_read_unlock(); |
| 36 | return chan; |
| 37 | } |
Chris Leech | de5506e | 2006-05-23 17:50:37 -0700 | [diff] [blame] | 38 | |
| 39 | int dma_skb_copy_datagram_iovec(struct dma_chan* chan, |
Adrian Bunk | 64d2f08 | 2006-07-21 14:49:49 -0700 | [diff] [blame] | 40 | struct sk_buff *skb, int offset, struct iovec *to, |
Chris Leech | de5506e | 2006-05-23 17:50:37 -0700 | [diff] [blame] | 41 | size_t len, struct dma_pinned_list *pinned_list); |
| 42 | |
Chris Leech | db21733 | 2006-06-17 21:24:58 -0700 | [diff] [blame] | 43 | #endif /* CONFIG_NET_DMA */ |
| 44 | #endif /* NETDMA_H */ |