1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors:
3 *
4 * Marek Lindner, Simon Wunderlich
5 */
6
7 #ifndef _NET_BATMAN_ADV_SEND_H_
8 #define _NET_BATMAN_ADV_SEND_H_
9
10 #include "main.h"
11
12 #include <linux/compiler.h>
13 #include <linux/skbuff.h>
14 #include <linux/spinlock.h>
15 #include <linux/types.h>
16 #include <uapi/linux/batadv_packet.h>
17
18 void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet,
19 bool dropped);
20 struct batadv_forw_packet *
21 batadv_forw_packet_alloc(struct batadv_hard_iface *if_incoming,
22 struct batadv_hard_iface *if_outgoing,
23 atomic_t *queue_left,
24 struct batadv_priv *bat_priv,
25 struct sk_buff *skb);
26 bool batadv_forw_packet_steal(struct batadv_forw_packet *packet, spinlock_t *l);
27 void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv,
28 struct batadv_forw_packet *forw_packet,
29 unsigned long send_time);
30 bool batadv_forw_packet_is_rebroadcast(struct batadv_forw_packet *forw_packet);
31
32 int batadv_send_skb_to_orig(struct sk_buff *skb,
33 struct batadv_orig_node *orig_node,
34 struct batadv_hard_iface *recv_if);
35 int batadv_send_skb_packet(struct sk_buff *skb,
36 struct batadv_hard_iface *hard_iface,
37 const u8 *dst_addr);
38 int batadv_send_broadcast_skb(struct sk_buff *skb,
39 struct batadv_hard_iface *hard_iface);
40 int batadv_send_unicast_skb(struct sk_buff *skb,
41 struct batadv_neigh_node *neigh_node);
42 int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
43 const struct sk_buff *skb,
44 unsigned long delay,
45 bool own_packet);
46 void
47 batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
48 const struct batadv_hard_iface *hard_iface);
49 bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
50 struct sk_buff *skb,
51 struct batadv_orig_node *orig_node,
52 int packet_subtype);
53 int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
54 struct sk_buff *skb, int packet_type,
55 int packet_subtype,
56 struct batadv_orig_node *orig_node,
57 unsigned short vid);
58 int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
59 struct sk_buff *skb, int packet_type,
60 int packet_subtype, u8 *dst_hint,
61 unsigned short vid);
62 int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
63 unsigned short vid);
64
65 /**
66 * batadv_send_skb_via_tt() - send an skb via TT lookup
67 * @bat_priv: the bat priv with all the soft interface information
68 * @skb: the payload to send
69 * @dst_hint: can be used to override the destination contained in the skb
70 * @vid: the vid to be used to search the translation table
71 *
72 * Look up the recipient node for the destination address in the ethernet
73 * header via the translation table. Wrap the given skb into a batman-adv
74 * unicast header. Then send this frame to the according destination node.
75 *
76 * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
77 */
batadv_send_skb_via_tt(struct batadv_priv * bat_priv,struct sk_buff * skb,u8 * dst_hint,unsigned short vid)78 static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv,
79 struct sk_buff *skb, u8 *dst_hint,
80 unsigned short vid)
81 {
82 return batadv_send_skb_via_tt_generic(bat_priv, skb, BATADV_UNICAST, 0,
83 dst_hint, vid);
84 }
85
86 /**
87 * batadv_send_skb_via_tt_4addr() - send an skb via TT lookup
88 * @bat_priv: the bat priv with all the soft interface information
89 * @skb: the payload to send
90 * @packet_subtype: the unicast 4addr packet subtype to use
91 * @dst_hint: can be used to override the destination contained in the skb
92 * @vid: the vid to be used to search the translation table
93 *
94 * Look up the recipient node for the destination address in the ethernet
95 * header via the translation table. Wrap the given skb into a batman-adv
96 * unicast-4addr header. Then send this frame to the according destination
97 * node.
98 *
99 * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
100 */
batadv_send_skb_via_tt_4addr(struct batadv_priv * bat_priv,struct sk_buff * skb,int packet_subtype,u8 * dst_hint,unsigned short vid)101 static inline int batadv_send_skb_via_tt_4addr(struct batadv_priv *bat_priv,
102 struct sk_buff *skb,
103 int packet_subtype,
104 u8 *dst_hint,
105 unsigned short vid)
106 {
107 return batadv_send_skb_via_tt_generic(bat_priv, skb,
108 BATADV_UNICAST_4ADDR,
109 packet_subtype, dst_hint, vid);
110 }
111
112 #endif /* _NET_BATMAN_ADV_SEND_H_ */
113