1 /* Copyright (C) 2007-2017 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/spinlock.h> 25 #include <linux/types.h> 26 27 #include "packet.h" 28 29 struct sk_buff; 30 31 void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet, 32 bool dropped); 33 struct batadv_forw_packet * 34 batadv_forw_packet_alloc(struct batadv_hard_iface *if_incoming, 35 struct batadv_hard_iface *if_outgoing, 36 atomic_t *queue_left, 37 struct batadv_priv *bat_priv); 38 bool batadv_forw_packet_steal(struct batadv_forw_packet *packet, spinlock_t *l); 39 void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv, 40 struct batadv_forw_packet *forw_packet, 41 unsigned long send_time); 42 43 int batadv_send_skb_to_orig(struct sk_buff *skb, 44 struct batadv_orig_node *orig_node, 45 struct batadv_hard_iface *recv_if); 46 int batadv_send_skb_packet(struct sk_buff *skb, 47 struct batadv_hard_iface *hard_iface, 48 const u8 *dst_addr); 49 int batadv_send_broadcast_skb(struct sk_buff *skb, 50 struct batadv_hard_iface *hard_iface); 51 int batadv_send_unicast_skb(struct sk_buff *skb, 52 struct batadv_neigh_node *neigh_node); 53 int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv, 54 const struct sk_buff *skb, 55 unsigned long delay, 56 bool own_packet); 57 void 58 batadv_purge_outstanding_packets(struct batadv_priv *bat_priv, 59 const struct batadv_hard_iface *hard_iface); 60 bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv, 61 struct sk_buff *skb, 62 struct batadv_orig_node *orig_node, 63 int packet_subtype); 64 int batadv_send_skb_unicast(struct batadv_priv *bat_priv, 65 struct sk_buff *skb, int packet_type, 66 int packet_subtype, 67 struct batadv_orig_node *orig_node, 68 unsigned short vid); 69 int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv, 70 struct sk_buff *skb, int packet_type, 71 int packet_subtype, u8 *dst_hint, 72 unsigned short vid); 73 int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb, 74 unsigned short vid); 75 76 /** 77 * batadv_send_skb_via_tt - send an skb via TT lookup 78 * @bat_priv: the bat priv with all the soft interface information 79 * @skb: the payload to send 80 * @dst_hint: can be used to override the destination contained in the skb 81 * @vid: the vid to be used to search the translation table 82 * 83 * Look up the recipient node for the destination address in the ethernet 84 * header via the translation table. Wrap the given skb into a batman-adv 85 * unicast header. Then send this frame to the according destination node. 86 * 87 * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise. 88 */ 89 static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv, 90 struct sk_buff *skb, u8 *dst_hint, 91 unsigned short vid) 92 { 93 return batadv_send_skb_via_tt_generic(bat_priv, skb, BATADV_UNICAST, 0, 94 dst_hint, vid); 95 } 96 97 /** 98 * batadv_send_skb_via_tt_4addr - send an skb via TT lookup 99 * @bat_priv: the bat priv with all the soft interface information 100 * @skb: the payload to send 101 * @packet_subtype: the unicast 4addr packet subtype to use 102 * @dst_hint: can be used to override the destination contained in the skb 103 * @vid: the vid to be used to search the translation table 104 * 105 * Look up the recipient node for the destination address in the ethernet 106 * header via the translation table. Wrap the given skb into a batman-adv 107 * unicast-4addr header. Then send this frame to the according destination 108 * node. 109 * 110 * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise. 111 */ 112 static inline int batadv_send_skb_via_tt_4addr(struct batadv_priv *bat_priv, 113 struct sk_buff *skb, 114 int packet_subtype, 115 u8 *dst_hint, 116 unsigned short vid) 117 { 118 return batadv_send_skb_via_tt_generic(bat_priv, skb, 119 BATADV_UNICAST_4ADDR, 120 packet_subtype, dst_hint, vid); 121 } 122 123 #endif /* _NET_BATMAN_ADV_SEND_H_ */ 124