net/batman-adv/send.h

   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_ */