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 struct batadv_forw_packet *
  32 batadv_forw_packet_alloc(struct batadv_hard_iface *if_incoming,
  33                          struct batadv_hard_iface *if_outgoing,
  34                          atomic_t *queue_left,
  35                          struct batadv_priv *bat_priv);
  36
  37 int batadv_send_skb_to_orig(struct sk_buff *skb,
  38                             struct batadv_orig_node *orig_node,
  39                             struct batadv_hard_iface *recv_if);
  40 int batadv_send_skb_packet(struct sk_buff *skb,
  41                            struct batadv_hard_iface *hard_iface,
  42                            const u8 *dst_addr);
  43 int batadv_send_broadcast_skb(struct sk_buff *skb,
  44                               struct batadv_hard_iface *hard_iface);
  45 int batadv_send_unicast_skb(struct sk_buff *skb,
  46                             struct batadv_neigh_node *neigh_node);
  47 int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
  48                                     const struct sk_buff *skb,
  49                                     unsigned long delay);
  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_ */