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/spinlock.h>
  14 #include <linux/types.h>
  15 #include <uapi/linux/batadv_packet.h>
  16
  17 struct sk_buff;
  18
  19 void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet,
  20                              bool dropped);
  21 struct batadv_forw_packet *
  22 batadv_forw_packet_alloc(struct batadv_hard_iface *if_incoming,
  23                          struct batadv_hard_iface *if_outgoing,
  24                          atomic_t *queue_left,
  25                          struct batadv_priv *bat_priv,
  26                          struct sk_buff *skb);
  27 bool batadv_forw_packet_steal(struct batadv_forw_packet *packet, spinlock_t *l);
  28 void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv,
  29                                     struct batadv_forw_packet *forw_packet,
  30                                     unsigned long send_time);
  31 bool batadv_forw_packet_is_rebroadcast(struct batadv_forw_packet *forw_packet);
  32
  33 int batadv_send_skb_to_orig(struct sk_buff *skb,
  34                             struct batadv_orig_node *orig_node,
  35                             struct batadv_hard_iface *recv_if);
  36 int batadv_send_skb_packet(struct sk_buff *skb,
  37                            struct batadv_hard_iface *hard_iface,
  38                            const u8 *dst_addr);
  39 int batadv_send_broadcast_skb(struct sk_buff *skb,
  40                               struct batadv_hard_iface *hard_iface);
  41 int batadv_send_unicast_skb(struct sk_buff *skb,
  42                             struct batadv_neigh_node *neigh_node);
  43 int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
  44                                     const struct sk_buff *skb,
  45                                     unsigned long delay,
  46                                     bool own_packet);
  47 void
  48 batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
  49                                  const struct batadv_hard_iface *hard_iface);
  50 bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
  51                                            struct sk_buff *skb,
  52                                            struct batadv_orig_node *orig_node,
  53                                            int packet_subtype);
  54 int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
  55                             struct sk_buff *skb, int packet_type,
  56                             int packet_subtype,
  57                             struct batadv_orig_node *orig_node,
  58                             unsigned short vid);
  59 int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
  60                                    struct sk_buff *skb, int packet_type,
  61                                    int packet_subtype, u8 *dst_hint,
  62                                    unsigned short vid);
  63 int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
  64                            unsigned short vid);
  65
  66 /**
  67  * batadv_send_skb_via_tt() - send an skb via TT lookup
  68  * @bat_priv: the bat priv with all the soft interface information
  69  * @skb: the payload to send
  70  * @dst_hint: can be used to override the destination contained in the skb
  71  * @vid: the vid to be used to search the translation table
  72  *
  73  * Look up the recipient node for the destination address in the ethernet
  74  * header via the translation table. Wrap the given skb into a batman-adv
  75  * unicast header. Then send this frame to the according destination node.
  76  *
  77  * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
  78  */
  79 static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv,
  80                                          struct sk_buff *skb, u8 *dst_hint,
  81                                          unsigned short vid)
  82 {
  83         return batadv_send_skb_via_tt_generic(bat_priv, skb, BATADV_UNICAST, 0,
  84                                               dst_hint, vid);
  85 }
  86
  87 /**
  88  * batadv_send_skb_via_tt_4addr() - send an skb via TT lookup
  89  * @bat_priv: the bat priv with all the soft interface information
  90  * @skb: the payload to send
  91  * @packet_subtype: the unicast 4addr packet subtype to use
  92  * @dst_hint: can be used to override the destination contained in the skb
  93  * @vid: the vid to be used to search the translation table
  94  *
  95  * Look up the recipient node for the destination address in the ethernet
  96  * header via the translation table. Wrap the given skb into a batman-adv
  97  * unicast-4addr header. Then send this frame to the according destination
  98  * node.
  99  *
 100  * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
 101  */
 102 static inline int batadv_send_skb_via_tt_4addr(struct batadv_priv *bat_priv,
 103                                                struct sk_buff *skb,
 104                                                int packet_subtype,
 105                                                u8 *dst_hint,
 106                                                unsigned short vid)
 107 {
 108         return batadv_send_skb_via_tt_generic(bat_priv, skb,
 109                                               BATADV_UNICAST_4ADDR,
 110                                               packet_subtype, dst_hint, vid);
 111 }
 112
 113 #endif /* _NET_BATMAN_ADV_SEND_H_ */