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 struct work_struct;
  30
  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 void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface);
  42 int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
  43                                     const struct sk_buff *skb,
  44                                     unsigned long delay);
  45 void batadv_send_outstanding_bat_ogm_packet(struct work_struct *work);
  46 void
  47 batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
  48                                  const struct batadv_hard_iface *hard_iface);
  49 bool 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);
  53 int 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);
  58 int 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);
  62 int 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  */
  78 static 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  */
 101 static 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_ */