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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/spinlock.h> | |
25 | #include <linux/types.h> | |
26 | ||
27 | #include "packet.h" | |
28 | ||
29 | struct sk_buff; | |
30 | ||
31 | void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet, | |
32 | bool dropped); | |
33 | struct batadv_forw_packet * | |
34 | batadv_forw_packet_alloc(struct batadv_hard_iface *if_incoming, | |
35 | struct batadv_hard_iface *if_outgoing, | |
36 | atomic_t *queue_left, | |
37 | struct batadv_priv *bat_priv); | |
38 | bool batadv_forw_packet_steal(struct batadv_forw_packet *packet, spinlock_t *l); | |
39 | void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv, | |
40 | struct batadv_forw_packet *forw_packet, | |
41 | unsigned long send_time); | |
42 | ||
43 | int batadv_send_skb_to_orig(struct sk_buff *skb, | |
44 | struct batadv_orig_node *orig_node, | |
45 | struct batadv_hard_iface *recv_if); | |
46 | int batadv_send_skb_packet(struct sk_buff *skb, | |
47 | struct batadv_hard_iface *hard_iface, | |
48 | const u8 *dst_addr); | |
49 | int batadv_send_broadcast_skb(struct sk_buff *skb, | |
50 | struct batadv_hard_iface *hard_iface); | |
51 | int batadv_send_unicast_skb(struct sk_buff *skb, | |
52 | struct batadv_neigh_node *neigh_node); | |
53 | int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv, | |
54 | const struct sk_buff *skb, | |
55 | unsigned long delay, | |
56 | bool own_packet); | |
57 | void | |
58 | batadv_purge_outstanding_packets(struct batadv_priv *bat_priv, | |
59 | const struct batadv_hard_iface *hard_iface); | |
60 | bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv, | |
61 | struct sk_buff *skb, | |
62 | struct batadv_orig_node *orig_node, | |
63 | int packet_subtype); | |
64 | int batadv_send_skb_unicast(struct batadv_priv *bat_priv, | |
65 | struct sk_buff *skb, int packet_type, | |
66 | int packet_subtype, | |
67 | struct batadv_orig_node *orig_node, | |
68 | unsigned short vid); | |
69 | int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv, | |
70 | struct sk_buff *skb, int packet_type, | |
71 | int packet_subtype, u8 *dst_hint, | |
72 | unsigned short vid); | |
73 | int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb, | |
74 | unsigned short vid); | |
75 | ||
76 | /** | |
77 | * batadv_send_skb_via_tt - send an skb via TT lookup | |
78 | * @bat_priv: the bat priv with all the soft interface information | |
79 | * @skb: the payload to send | |
80 | * @dst_hint: can be used to override the destination contained in the skb | |
81 | * @vid: the vid to be used to search the translation table | |
82 | * | |
83 | * Look up the recipient node for the destination address in the ethernet | |
84 | * header via the translation table. Wrap the given skb into a batman-adv | |
85 | * unicast header. Then send this frame to the according destination node. | |
86 | * | |
87 | * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise. | |
88 | */ | |
89 | static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv, | |
90 | struct sk_buff *skb, u8 *dst_hint, | |
91 | unsigned short vid) | |
92 | { | |
93 | return batadv_send_skb_via_tt_generic(bat_priv, skb, BATADV_UNICAST, 0, | |
94 | dst_hint, vid); | |
95 | } | |
96 | ||
97 | /** | |
98 | * batadv_send_skb_via_tt_4addr - send an skb via TT lookup | |
99 | * @bat_priv: the bat priv with all the soft interface information | |
100 | * @skb: the payload to send | |
101 | * @packet_subtype: the unicast 4addr packet subtype to use | |
102 | * @dst_hint: can be used to override the destination contained in the skb | |
103 | * @vid: the vid to be used to search the translation table | |
104 | * | |
105 | * Look up the recipient node for the destination address in the ethernet | |
106 | * header via the translation table. Wrap the given skb into a batman-adv | |
107 | * unicast-4addr header. Then send this frame to the according destination | |
108 | * node. | |
109 | * | |
110 | * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise. | |
111 | */ | |
112 | static inline int batadv_send_skb_via_tt_4addr(struct batadv_priv *bat_priv, | |
113 | struct sk_buff *skb, | |
114 | int packet_subtype, | |
115 | u8 *dst_hint, | |
116 | unsigned short vid) | |
117 | { | |
118 | return batadv_send_skb_via_tt_generic(bat_priv, skb, | |
119 | BATADV_UNICAST_4ADDR, | |
120 | packet_subtype, dst_hint, vid); | |
121 | } | |
122 | ||
123 | #endif /* _NET_BATMAN_ADV_SEND_H_ */ |