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 18void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet, 19 bool dropped); 20struct batadv_forw_packet * 21batadv_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); 26bool batadv_forw_packet_steal(struct batadv_forw_packet *packet, spinlock_t *l); 27void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv, 28 struct batadv_forw_packet *forw_packet, 29 unsigned long send_time); 30bool batadv_forw_packet_is_rebroadcast(struct batadv_forw_packet *forw_packet); 31 32int batadv_send_skb_to_orig(struct sk_buff *skb, 33 struct batadv_orig_node *orig_node, 34 struct batadv_hard_iface *recv_if); 35int batadv_send_skb_packet(struct sk_buff *skb, 36 struct batadv_hard_iface *hard_iface, 37 const u8 *dst_addr); 38int batadv_send_broadcast_skb(struct sk_buff *skb, 39 struct batadv_hard_iface *hard_iface); 40int batadv_send_unicast_skb(struct sk_buff *skb, 41 struct batadv_neigh_node *neigh_node); 42int 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); 46void 47batadv_purge_outstanding_packets(struct batadv_priv *bat_priv, 48 const struct batadv_hard_iface *hard_iface); 49bool 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); 53int 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); 58int 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); 62int 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 */ 78static 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 */ 101static 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