1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 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_forw_bcast_packet(struct batadv_priv *bat_priv,
43 struct sk_buff *skb,
44 unsigned long delay,
45 bool own_packet);
46 void batadv_send_bcast_packet(struct batadv_priv *bat_priv,
47 struct sk_buff *skb,
48 unsigned long delay,
49 bool own_packet);
50 void
51 batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
52 const struct batadv_hard_iface *hard_iface);
53 bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
54 struct sk_buff *skb,
55 struct batadv_orig_node *orig_node,
56 int packet_subtype);
57 int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
58 struct sk_buff *skb, int packet_type,
59 int packet_subtype,
60 struct batadv_orig_node *orig_node,
61 unsigned short vid);
62 int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
63 struct sk_buff *skb, int packet_type,
64 int packet_subtype, u8 *dst_hint,
65 unsigned short vid);
66 int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
67 unsigned short vid);
68
69 /**
70 * batadv_send_skb_via_tt() - send an skb via TT lookup
71 * @bat_priv: the bat priv with all the soft interface information
72 * @skb: the payload to send
73 * @dst_hint: can be used to override the destination contained in the skb
74 * @vid: the vid to be used to search the translation table
75 *
76 * Look up the recipient node for the destination address in the ethernet
77 * header via the translation table. Wrap the given skb into a batman-adv
78 * unicast header. Then send this frame to the according destination node.
79 *
80 * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
81 */
batadv_send_skb_via_tt(struct batadv_priv * bat_priv,struct sk_buff * skb,u8 * dst_hint,unsigned short vid)82 static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv,
83 struct sk_buff *skb, u8 *dst_hint,
84 unsigned short vid)
85 {
86 return batadv_send_skb_via_tt_generic(bat_priv, skb, BATADV_UNICAST, 0,
87 dst_hint, vid);
88 }
89
90 /**
91 * batadv_send_skb_via_tt_4addr() - send an skb via TT lookup
92 * @bat_priv: the bat priv with all the soft interface information
93 * @skb: the payload to send
94 * @packet_subtype: the unicast 4addr packet subtype to use
95 * @dst_hint: can be used to override the destination contained in the skb
96 * @vid: the vid to be used to search the translation table
97 *
98 * Look up the recipient node for the destination address in the ethernet
99 * header via the translation table. Wrap the given skb into a batman-adv
100 * unicast-4addr header. Then send this frame to the according destination
101 * node.
102 *
103 * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
104 */
batadv_send_skb_via_tt_4addr(struct batadv_priv * bat_priv,struct sk_buff * skb,int packet_subtype,u8 * dst_hint,unsigned short vid)105 static inline int batadv_send_skb_via_tt_4addr(struct batadv_priv *bat_priv,
106 struct sk_buff *skb,
107 int packet_subtype,
108 u8 *dst_hint,
109 unsigned short vid)
110 {
111 return batadv_send_skb_via_tt_generic(bat_priv, skb,
112 BATADV_UNICAST_4ADDR,
113 packet_subtype, dst_hint, vid);
114 }
115
116 #endif /* _NET_BATMAN_ADV_SEND_H_ */
117