net/batman-adv/send.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2007-2020  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
  18 void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet,
  19                              bool dropped);
  20 struct batadv_forw_packet *
  21 batadv_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);
  26 bool batadv_forw_packet_steal(struct batadv_forw_packet *packet, spinlock_t *l);
  27 void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv,
  28                                     struct batadv_forw_packet *forw_packet,
  29                                     unsigned long send_time);
  30 bool batadv_forw_packet_is_rebroadcast(struct batadv_forw_packet *forw_packet);
  31
  32 int batadv_send_skb_to_orig(struct sk_buff *skb,
  33                             struct batadv_orig_node *orig_node,
  34                             struct batadv_hard_iface *recv_if);
  35 int batadv_send_skb_packet(struct sk_buff *skb,
  36                            struct batadv_hard_iface *hard_iface,
  37                            const u8 *dst_addr);
  38 int batadv_send_broadcast_skb(struct sk_buff *skb,
  39                               struct batadv_hard_iface *hard_iface);
  40 int batadv_send_unicast_skb(struct sk_buff *skb,
  41                             struct batadv_neigh_node *neigh_node);
  42 int 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);
  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_ */