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