kernel/net/batman-adv/send.h

   1 /* Copyright (C) 2007-2015 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_packet(struct sk_buff *skb,
  32                            struct batadv_hard_iface *hard_iface,
  33                            const u8 *dst_addr);
  34 int batadv_send_skb_to_orig(struct sk_buff *skb,
  35                             struct batadv_orig_node *orig_node,
  36                             struct batadv_hard_iface *recv_if);
  37 void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface);
  38 int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
  39                                     const struct sk_buff *skb,
  40                                     unsigned long delay);
  41 void batadv_send_outstanding_bat_ogm_packet(struct work_struct *work);
  42 void
  43 batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
  44                                  const struct batadv_hard_iface *hard_iface);
  45 bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
  46                                            struct sk_buff *skb,
  47                                            struct batadv_orig_node *orig_node,
  48                                            int packet_subtype);
  49 int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
  50                             struct sk_buff *skb, int packet_type,
  51                             int packet_subtype,
  52                             struct batadv_orig_node *orig_node,
  53                             unsigned short vid);
  54 int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
  55                                    struct sk_buff *skb, int packet_type,
  56                                    int packet_subtype, u8 *dst_hint,
  57                                    unsigned short vid);
  58 int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
  59                            unsigned short vid);
  60
  61 /**
  62  * batadv_send_skb_via_tt - send an skb via TT lookup
  63  * @bat_priv: the bat priv with all the soft interface information
  64  * @skb: the payload to send
  65  * @dst_hint: can be used to override the destination contained in the skb
  66  * @vid: the vid to be used to search the translation table
  67  *
  68  * Look up the recipient node for the destination address in the ethernet
  69  * header via the translation table. Wrap the given skb into a batman-adv
  70  * unicast header. Then send this frame to the according destination node.
  71  *
  72  * Returns NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
  73  */
  74 static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv,
  75                                          struct sk_buff *skb, u8 *dst_hint,
  76                                          unsigned short vid)
  77 {
  78         return batadv_send_skb_via_tt_generic(bat_priv, skb, BATADV_UNICAST, 0,
  79                                               dst_hint, vid);
  80 }
  81
  82 /**
  83  * batadv_send_skb_via_tt_4addr - send an skb via TT lookup
  84  * @bat_priv: the bat priv with all the soft interface information
  85  * @skb: the payload to send
  86  * @packet_subtype: the unicast 4addr packet subtype to use
  87  * @dst_hint: can be used to override the destination contained in the skb
  88  * @vid: the vid to be used to search the translation table
  89  *
  90  * Look up the recipient node for the destination address in the ethernet
  91  * header via the translation table. Wrap the given skb into a batman-adv
  92  * unicast-4addr header. Then send this frame to the according destination
  93  * node.
  94  *
  95  * Returns NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
  96  */
  97 static inline int batadv_send_skb_via_tt_4addr(struct batadv_priv *bat_priv,
  98                                                struct sk_buff *skb,
  99                                                int packet_subtype,
 100                                                u8 *dst_hint,
 101                                                unsigned short vid)
 102 {
 103         return batadv_send_skb_via_tt_generic(bat_priv, skb,
 104                                               BATADV_UNICAST_4ADDR,
 105                                               packet_subtype, dst_hint, vid);
 106 }
 107
 108 #endif /* _NET_BATMAN_ADV_SEND_H_ */