1 /*
2  * Copyright (c) 2007-2013 Nicira, Inc.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of version 2 of the GNU General Public
6  * License as published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it will be useful, but
9  * WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11  * General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program; if not, write to the Free Software
15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
16  * 02110-1301, USA
17  */
18 
19 
20 #ifndef FLOW_NETLINK_H
21 #define FLOW_NETLINK_H 1
22 
23 #include <linux/kernel.h>
24 #include <linux/netlink.h>
25 #include <linux/openvswitch.h>
26 #include <linux/spinlock.h>
27 #include <linux/types.h>
28 #include <linux/rcupdate.h>
29 #include <linux/if_ether.h>
30 #include <linux/in6.h>
31 #include <linux/jiffies.h>
32 #include <linux/time.h>
33 
34 #include <net/inet_ecn.h>
35 #include <net/ip_tunnels.h>
36 
37 #include "flow.h"
38 
39 size_t ovs_tun_key_attr_size(void);
40 size_t ovs_key_attr_size(void);
41 
42 void ovs_match_init(struct sw_flow_match *match,
43 		    struct sw_flow_key *key, bool reset_key,
44 		    struct sw_flow_mask *mask);
45 
46 int ovs_nla_put_key(const struct sw_flow_key *, const struct sw_flow_key *,
47 		    int attr, bool is_mask, struct sk_buff *);
48 int parse_flow_nlattrs(const struct nlattr *attr, const struct nlattr *a[],
49 		       u64 *attrsp, bool log);
50 int ovs_nla_get_flow_metadata(struct net *net,
51 			      const struct nlattr *a[OVS_KEY_ATTR_MAX + 1],
52 			      u64 attrs, struct sw_flow_key *key, bool log);
53 
54 int ovs_nla_put_identifier(const struct sw_flow *flow, struct sk_buff *skb);
55 int ovs_nla_put_masked_key(const struct sw_flow *flow, struct sk_buff *skb);
56 int ovs_nla_put_mask(const struct sw_flow *flow, struct sk_buff *skb);
57 
58 int ovs_nla_get_match(struct net *, struct sw_flow_match *,
59 		      const struct nlattr *key, const struct nlattr *mask,
60 		      bool log);
61 
62 int ovs_nla_put_tunnel_info(struct sk_buff *skb,
63 			    struct ip_tunnel_info *tun_info);
64 
65 bool ovs_nla_get_ufid(struct sw_flow_id *, const struct nlattr *, bool log);
66 int ovs_nla_get_identifier(struct sw_flow_id *sfid, const struct nlattr *ufid,
67 			   const struct sw_flow_key *key, bool log);
68 u32 ovs_nla_get_ufid_flags(const struct nlattr *attr);
69 
70 int ovs_nla_copy_actions(struct net *net, const struct nlattr *attr,
71 			 const struct sw_flow_key *key,
72 			 struct sw_flow_actions **sfa, bool log);
73 int ovs_nla_add_action(struct sw_flow_actions **sfa, int attrtype,
74 		       void *data, int len, bool log);
75 int ovs_nla_put_actions(const struct nlattr *attr,
76 			int len, struct sk_buff *skb);
77 
78 void ovs_nla_free_flow_actions(struct sw_flow_actions *);
79 void ovs_nla_free_flow_actions_rcu(struct sw_flow_actions *);
80 
81 int nsh_key_from_nlattr(const struct nlattr *attr, struct ovs_key_nsh *nsh,
82 			struct ovs_key_nsh *nsh_mask);
83 int nsh_hdr_from_nlattr(const struct nlattr *attr, struct nshhdr *nh,
84 			size_t size);
85 
86 #endif /* flow_netlink.h */
87