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

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* Copyright (C) 2007-2019  B.A.T.M.A.N. contributors:
   3 *
   4 * Marek Lindner, Simon Wunderlich
   5 */
   6
   7#ifndef _NET_BATMAN_ADV_SEND_H_
   8#define _NET_BATMAN_ADV_SEND_H_
   9
  10#include "main.h"
  11
  12#include <linux/compiler.h>
  13#include <linux/skbuff.h>
  14#include <linux/spinlock.h>
  15#include <linux/types.h>
  16#include <uapi/linux/batadv_packet.h>
  17
  18void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet,
  19                             bool dropped);
  20struct batadv_forw_packet *
  21batadv_forw_packet_alloc(struct batadv_hard_iface *if_incoming,
  22                         struct batadv_hard_iface *if_outgoing,
  23                         atomic_t *queue_left,
  24                         struct batadv_priv *bat_priv,
  25                         struct sk_buff *skb);
  26bool batadv_forw_packet_steal(struct batadv_forw_packet *packet, spinlock_t *l);
  27void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv,
  28                                    struct batadv_forw_packet *forw_packet,
  29                                    unsigned long send_time);
  30bool batadv_forw_packet_is_rebroadcast(struct batadv_forw_packet *forw_packet);
  31
  32int batadv_send_skb_to_orig(struct sk_buff *skb,
  33                            struct batadv_orig_node *orig_node,
  34                            struct batadv_hard_iface *recv_if);
  35int batadv_send_skb_packet(struct sk_buff *skb,
  36                           struct batadv_hard_iface *hard_iface,
  37                           const u8 *dst_addr);
  38int batadv_send_broadcast_skb(struct sk_buff *skb,
  39                              struct batadv_hard_iface *hard_iface);
  40int batadv_send_unicast_skb(struct sk_buff *skb,
  41                            struct batadv_neigh_node *neigh_node);
  42int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
  43                                    const struct sk_buff *skb,
  44                                    unsigned long delay,
  45                                    bool own_packet);
  46void
  47batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
  48                                 const struct batadv_hard_iface *hard_iface);
  49bool 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);
  53int 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);
  58int 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);
  62int 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 */
  78static 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 */
 101static 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_ */
 113