LXR linux/net/batman-adv/send.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* Copyright (C) 2007-2018  B.A.T.M.A.N. contributors:
   3 *
   4 * Marek Lindner, Simon Wunderlich
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of version 2 of the GNU General Public
   8 * License as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful, but
  11 * WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13 * General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19#ifndef _NET_BATMAN_ADV_SEND_H_
  20#define _NET_BATMAN_ADV_SEND_H_
  21
  22#include "main.h"
  23
  24#include <linux/compiler.h>
  25#include <linux/spinlock.h>
  26#include <linux/types.h>
  27#include <uapi/linux/batadv_packet.h>
  28
  29struct sk_buff;
  30
  31void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet,
  32                             bool dropped);
  33struct batadv_forw_packet *
  34batadv_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                         struct sk_buff *skb);
  39bool batadv_forw_packet_steal(struct batadv_forw_packet *packet, spinlock_t *l);
  40void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv,
  41                                    struct batadv_forw_packet *forw_packet,
  42                                    unsigned long send_time);
  43bool batadv_forw_packet_is_rebroadcast(struct batadv_forw_packet *forw_packet);
  44
  45int batadv_send_skb_to_orig(struct sk_buff *skb,
  46                            struct batadv_orig_node *orig_node,
  47                            struct batadv_hard_iface *recv_if);
  48int batadv_send_skb_packet(struct sk_buff *skb,
  49                           struct batadv_hard_iface *hard_iface,
  50                           const u8 *dst_addr);
  51int batadv_send_broadcast_skb(struct sk_buff *skb,
  52                              struct batadv_hard_iface *hard_iface);
  53int batadv_send_unicast_skb(struct sk_buff *skb,
  54                            struct batadv_neigh_node *neigh_node);
  55int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
  56                                    const struct sk_buff *skb,
  57                                    unsigned long delay,
  58                                    bool own_packet);
  59void
  60batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
  61                                 const struct batadv_hard_iface *hard_iface);
  62bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
  63                                           struct sk_buff *skb,
  64                                           struct batadv_orig_node *orig_node,
  65                                           int packet_subtype);
  66int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
  67                            struct sk_buff *skb, int packet_type,
  68                            int packet_subtype,
  69                            struct batadv_orig_node *orig_node,
  70                            unsigned short vid);
  71int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
  72                                   struct sk_buff *skb, int packet_type,
  73                                   int packet_subtype, u8 *dst_hint,
  74                                   unsigned short vid);
  75int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
  76                           unsigned short vid);
  77
  78/**
  79 * batadv_send_skb_via_tt() - send an skb via TT lookup
  80 * @bat_priv: the bat priv with all the soft interface information
  81 * @skb: the payload to send
  82 * @dst_hint: can be used to override the destination contained in the skb
  83 * @vid: the vid to be used to search the translation table
  84 *
  85 * Look up the recipient node for the destination address in the ethernet
  86 * header via the translation table. Wrap the given skb into a batman-adv
  87 * unicast header. Then send this frame to the according destination node.
  88 *
  89 * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
  90 */
  91static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv,
  92                                         struct sk_buff *skb, u8 *dst_hint,
  93                                         unsigned short vid)
  94{
  95        return batadv_send_skb_via_tt_generic(bat_priv, skb, BATADV_UNICAST, 0,
  96                                              dst_hint, vid);
  97}
  98
  99/**
 100 * batadv_send_skb_via_tt_4addr() - send an skb via TT lookup
 101 * @bat_priv: the bat priv with all the soft interface information
 102 * @skb: the payload to send
 103 * @packet_subtype: the unicast 4addr packet subtype to use
 104 * @dst_hint: can be used to override the destination contained in the skb
 105 * @vid: the vid to be used to search the translation table
 106 *
 107 * Look up the recipient node for the destination address in the ethernet
 108 * header via the translation table. Wrap the given skb into a batman-adv
 109 * unicast-4addr header. Then send this frame to the according destination
 110 * node.
 111 *
 112 * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
 113 */
 114static inline int batadv_send_skb_via_tt_4addr(struct batadv_priv *bat_priv,
 115                                               struct sk_buff *skb,
 116                                               int packet_subtype,
 117                                               u8 *dst_hint,
 118                                               unsigned short vid)
 119{
 120        return batadv_send_skb_via_tt_generic(bat_priv, skb,
 121                                              BATADV_UNICAST_4ADDR,
 122                                              packet_subtype, dst_hint, vid);
 123}
 124
 125#endif /* _NET_BATMAN_ADV_SEND_H_ */
 126