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 */ 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 */ 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