/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors:
*
* Marek Lindner, Simon Wunderlich
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _NET_BATMAN_ADV_SEND_H_
#define _NET_BATMAN_ADV_SEND_H_
#include "main.h"
#include <linux/compiler.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <uapi/linux/batadv_packet.h>
struct sk_buff;
void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet,
bool dropped);
struct batadv_forw_packet *
batadv_forw_packet_alloc(struct batadv_hard_iface *if_incoming,
struct batadv_hard_iface *if_outgoing,
atomic_t *queue_left,
struct batadv_priv *bat_priv,
struct sk_buff *skb);
bool batadv_forw_packet_steal(struct batadv_forw_packet *packet, spinlock_t *l);
void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv,
struct batadv_forw_packet *forw_packet,
unsigned long send_time);
bool batadv_forw_packet_is_rebroadcast(struct batadv_forw_packet *forw_packet);
int batadv_send_skb_to_orig(struct sk_buff *skb,
struct batadv_orig_node *orig_node,
struct batadv_hard_iface *recv_if);
int batadv_send_skb_packet(struct sk_buff *skb,
struct batadv_hard_iface *hard_iface,
const u8 *dst_addr);
int batadv_send_broadcast_skb(struct sk_buff *skb,
struct batadv_hard_iface *hard_iface);
int batadv_send_unicast_skb(struct sk_buff *skb,
struct batadv_neigh_node *neigh_node);
int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
const struct sk_buff *skb,
unsigned long delay,
bool own_packet);
void
batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
const struct batadv_hard_iface *hard_iface);
bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
struct sk_buff *skb,
struct batadv_orig_node *orig_node,
int packet_subtype);
int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
struct sk_buff *skb, int packet_type,
int packet_subtype,
struct batadv_orig_node *orig_node,
unsigned short vid);
int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
struct sk_buff *skb, int packet_type,
int packet_subtype, u8 *dst_hint,
unsigned short vid);
int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
unsigned short vid);
/**
* batadv_send_skb_via_tt() - send an skb via TT lookup
* @bat_priv: the bat priv with all the soft interface information
* @skb: the payload to send
* @dst_hint: can be used to override the destination contained in the skb
* @vid: the vid to be used to search the translation table
*
* Look up the recipient node for the destination address in the ethernet
* header via the translation table. Wrap the given skb into a batman-adv
* unicast header. Then send this frame to the according destination node.
*
* Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
*/
static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv,
struct sk_buff *skb, u8 *dst_hint,
unsigned short vid)
{
return batadv_send_skb_via_tt_generic(bat_priv, skb, BATADV_UNICAST, 0,
dst_hint, vid);
}
/**
* batadv_send_skb_via_tt_4addr() - send an skb via TT lookup
* @bat_priv: the bat priv with all the soft interface information
* @skb: the payload to send
* @packet_subtype: the unicast 4addr packet subtype to use
* @dst_hint: can be used to override the destination contained in the skb
* @vid: the vid to be used to search the translation table
*
* Look up the recipient node for the destination address in the ethernet
* header via the translation table. Wrap the given skb into a batman-adv
* unicast-4addr header. Then send this frame to the according destination
* node.
*
* Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
*/
static inline int batadv_send_skb_via_tt_4addr(struct batadv_priv *bat_priv,
struct sk_buff *skb,
int packet_subtype,
u8 *dst_hint,
unsigned short vid)
{
return batadv_send_skb_via_tt_generic(bat_priv, skb,
BATADV_UNICAST_4ADDR,
packet_subtype, dst_hint, vid);
}
#endif /* _NET_BATMAN_ADV_SEND_H_ */
