openvswitch/datapath/actions.h

/*
 * Copyright (c) 2009, 2010 Nicira Networks.
 * Distributed under the terms of the GNU GPL version 2.
 *
 * Significant portions of this file may be copied from parts of the Linux
 * kernel, by Linus Torvalds and others.
 */

#ifndef ACTIONS_H
#define ACTIONS_H 1

#include <linux/skbuff.h>
#include <linux/version.h>

struct datapath;
struct sk_buff;
struct odp_flow_key;
union odp_action;

int execute_actions(struct datapath *dp, struct sk_buff *skb,
		    const struct odp_flow_key *key,
		    const union odp_action *, int n_actions);

#endif /* actions.h */
Update primary code license to Apache 2.0. 2009-06-15 15:11:30 -07:00			`/*`
datapath: Add generic virtual port layer. Currently the datapath directly accesses devices through their Linux functions. Obviously this doesn't work for virtual devices that are not backed by an actual Linux device. This creates a new virtual port layer which handles all interaction with devices. The existing support for Linux devices was then implemented on top of this layer as two device types. It splits out and renames dp_dev to internal_dev. There were several places where datapath devices had to handled in a special manner and this cleans that up by putting all the special casing in a single location. 2010-04-12 15:53:39 -04:00			`* Copyright (c) 2009, 2010 Nicira Networks.`
Update primary code license to Apache 2.0. 2009-06-15 15:11:30 -07:00			`* Distributed under the terms of the GNU GPL version 2.`
			`*`
			`* Significant portions of this file may be copied from parts of the Linux`
			`* kernel, by Linus Torvalds and others.`
			`*/`

Import from old repository commit 61ef2b42a9c4ba8e1600f15bb0236765edc2ad45. 2009-07-08 13:19:16 -07:00			`#ifndef ACTIONS_H`
			`#define ACTIONS_H 1`

datapath: Add function to copy skb checksum bits. Some kernels don't copy the checksum offload state in the skb header when doing different types of copies. Xen adds even more fields, which are also not consistently copied. The result is uninitialized memory and random outcomes. This adds a function to consistently copy these bits across all kernel versions. 2010-04-07 13:55:28 -04:00			`#include <linux/skbuff.h>`
datapath: Include linux/version.h in action.h for LINUX_VERSION Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Jesse Gross <jesse@nicira.com> 2010-08-30 16:33:17 +09:00			`#include <linux/version.h>`
Import from old repository commit 61ef2b42a9c4ba8e1600f15bb0236765edc2ad45. 2009-07-08 13:19:16 -07:00
			`struct datapath;`
			`struct sk_buff;`
			`struct odp_flow_key;`
			`union odp_action;`

			`int execute_actions(struct datapath dp, struct sk_buff skb,`
datapath: Don't update flow key when applying actions. Currently the flow key is updated to match an action that is applied to a packet but these field are never looked at again. Not only is this a waste of time it also makes optimizations involving caching the flow key more difficult. 2010-07-14 20:15:53 -07:00			`const struct odp_flow_key *key,`
datapath: Always use GFP_ATOMIC to execute actions. These functions run 99% of the time in atomic context and the benefit of passing along the 'gfp' argument for the other 1% doesn't seem to outweigh the cost. Suggested-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Jesse Gross <jesse@nicira.com> Signed-off-by: Ben Pfaff <blp@nicira.com> 2010-09-10 11:16:31 -07:00			`const union odp_action *, int n_actions);`
Import from old repository commit 61ef2b42a9c4ba8e1600f15bb0236765edc2ad45. 2009-07-08 13:19:16 -07:00
			`#endif /* actions.h */`