xref: /openbmc/linux/net/batman-adv/send.h (revision 293d5b43)
1 /* Copyright (C) 2007-2016  B.A.T.M.A.N. contributors:
2  *
3  * Marek Lindner, Simon Wunderlich
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of version 2 of the GNU General Public
7  * License as published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, see <http://www.gnu.org/licenses/>.
16  */
17 
18 #ifndef _NET_BATMAN_ADV_SEND_H_
19 #define _NET_BATMAN_ADV_SEND_H_
20 
21 #include "main.h"
22 
23 #include <linux/compiler.h>
24 #include <linux/types.h>
25 
26 #include "packet.h"
27 
28 struct sk_buff;
29 
30 void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet);
31 int batadv_send_skb_to_orig(struct sk_buff *skb,
32 			    struct batadv_orig_node *orig_node,
33 			    struct batadv_hard_iface *recv_if);
34 int batadv_send_skb_packet(struct sk_buff *skb,
35 			   struct batadv_hard_iface *hard_iface,
36 			   const u8 *dst_addr);
37 int batadv_send_broadcast_skb(struct sk_buff *skb,
38 			      struct batadv_hard_iface *hard_iface);
39 int batadv_send_unicast_skb(struct sk_buff *skb,
40 			    struct batadv_neigh_node *neigh_node);
41 int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
42 				    const struct sk_buff *skb,
43 				    unsigned long delay);
44 void
45 batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
46 				 const struct batadv_hard_iface *hard_iface);
47 bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
48 					   struct sk_buff *skb,
49 					   struct batadv_orig_node *orig_node,
50 					   int packet_subtype);
51 int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
52 			    struct sk_buff *skb, int packet_type,
53 			    int packet_subtype,
54 			    struct batadv_orig_node *orig_node,
55 			    unsigned short vid);
56 int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
57 				   struct sk_buff *skb, int packet_type,
58 				   int packet_subtype, u8 *dst_hint,
59 				   unsigned short vid);
60 int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
61 			   unsigned short vid);
62 
63 /**
64  * batadv_send_skb_via_tt - send an skb via TT lookup
65  * @bat_priv: the bat priv with all the soft interface information
66  * @skb: the payload to send
67  * @dst_hint: can be used to override the destination contained in the skb
68  * @vid: the vid to be used to search the translation table
69  *
70  * Look up the recipient node for the destination address in the ethernet
71  * header via the translation table. Wrap the given skb into a batman-adv
72  * unicast header. Then send this frame to the according destination node.
73  *
74  * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
75  */
76 static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv,
77 					 struct sk_buff *skb, u8 *dst_hint,
78 					 unsigned short vid)
79 {
80 	return batadv_send_skb_via_tt_generic(bat_priv, skb, BATADV_UNICAST, 0,
81 					      dst_hint, vid);
82 }
83 
84 /**
85  * batadv_send_skb_via_tt_4addr - send an skb via TT lookup
86  * @bat_priv: the bat priv with all the soft interface information
87  * @skb: the payload to send
88  * @packet_subtype: the unicast 4addr packet subtype to use
89  * @dst_hint: can be used to override the destination contained in the skb
90  * @vid: the vid to be used to search the translation table
91  *
92  * Look up the recipient node for the destination address in the ethernet
93  * header via the translation table. Wrap the given skb into a batman-adv
94  * unicast-4addr header. Then send this frame to the according destination
95  * node.
96  *
97  * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
98  */
99 static inline int batadv_send_skb_via_tt_4addr(struct batadv_priv *bat_priv,
100 					       struct sk_buff *skb,
101 					       int packet_subtype,
102 					       u8 *dst_hint,
103 					       unsigned short vid)
104 {
105 	return batadv_send_skb_via_tt_generic(bat_priv, skb,
106 					      BATADV_UNICAST_4ADDR,
107 					      packet_subtype, dst_hint, vid);
108 }
109 
110 #endif /* _NET_BATMAN_ADV_SEND_H_ */
111