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fec149f5d3
The header file is used by different userspace programs to inject packets or to decode sniffed packets. It should therefore be available to them as userspace header. Also other components in the kernel (like the flow dissector) require access to the packet definitions to be able to decode ETH_P_BATMAN ethernet packets. Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: David S. Miller <davem@davemloft.net>
180 lines
4.7 KiB
C
180 lines
4.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2011-2017 B.A.T.M.A.N. contributors:
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*
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* Antonio Quartulli
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_
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#define _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_
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#include "main.h"
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#include <linux/compiler.h>
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#include <linux/netdevice.h>
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#include <linux/types.h>
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#include <uapi/linux/batadv_packet.h>
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#include "originator.h"
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struct seq_file;
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struct sk_buff;
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#ifdef CONFIG_BATMAN_ADV_DAT
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/* BATADV_DAT_ADDR_MAX - maximum address value in the DHT space */
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#define BATADV_DAT_ADDR_MAX ((batadv_dat_addr_t)~(batadv_dat_addr_t)0)
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void batadv_dat_status_update(struct net_device *net_dev);
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bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
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struct sk_buff *skb);
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bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
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struct sk_buff *skb, int hdr_size);
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void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
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struct sk_buff *skb);
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bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
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struct sk_buff *skb, int hdr_size);
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bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
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struct batadv_forw_packet *forw_packet);
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/**
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* batadv_dat_init_orig_node_addr() - assign a DAT address to the orig_node
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* @orig_node: the node to assign the DAT address to
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*/
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static inline void
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batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
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{
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u32 addr;
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addr = batadv_choose_orig(orig_node->orig, BATADV_DAT_ADDR_MAX);
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orig_node->dat_addr = (batadv_dat_addr_t)addr;
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}
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/**
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* batadv_dat_init_own_addr() - assign a DAT address to the node itself
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* @bat_priv: the bat priv with all the soft interface information
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* @primary_if: a pointer to the primary interface
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*/
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static inline void
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batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
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struct batadv_hard_iface *primary_if)
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{
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u32 addr;
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addr = batadv_choose_orig(primary_if->net_dev->dev_addr,
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BATADV_DAT_ADDR_MAX);
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bat_priv->dat.addr = (batadv_dat_addr_t)addr;
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}
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int batadv_dat_init(struct batadv_priv *bat_priv);
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void batadv_dat_free(struct batadv_priv *bat_priv);
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int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset);
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/**
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* batadv_dat_inc_counter() - increment the correct DAT packet counter
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* @bat_priv: the bat priv with all the soft interface information
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* @subtype: the 4addr subtype of the packet to be counted
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*
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* Updates the ethtool statistics for the received packet if it is a DAT subtype
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*/
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static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
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u8 subtype)
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{
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switch (subtype) {
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case BATADV_P_DAT_DHT_GET:
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batadv_inc_counter(bat_priv,
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BATADV_CNT_DAT_GET_RX);
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break;
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case BATADV_P_DAT_DHT_PUT:
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batadv_inc_counter(bat_priv,
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BATADV_CNT_DAT_PUT_RX);
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break;
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}
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}
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#else
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static inline void batadv_dat_status_update(struct net_device *net_dev)
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{
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}
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static inline bool
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batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
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struct sk_buff *skb)
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{
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return false;
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}
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static inline bool
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batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
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struct sk_buff *skb, int hdr_size)
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{
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return false;
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}
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static inline bool
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batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
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struct sk_buff *skb)
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{
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return false;
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}
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static inline bool
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batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
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struct sk_buff *skb, int hdr_size)
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{
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return false;
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}
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static inline bool
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batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
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struct batadv_forw_packet *forw_packet)
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{
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return false;
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}
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static inline void
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batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
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{
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}
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static inline void batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
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struct batadv_hard_iface *iface)
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{
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}
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static inline void batadv_arp_change_timeout(struct net_device *soft_iface,
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const char *name)
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{
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}
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static inline int batadv_dat_init(struct batadv_priv *bat_priv)
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{
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return 0;
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}
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static inline void batadv_dat_free(struct batadv_priv *bat_priv)
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{
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}
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static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
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u8 subtype)
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{
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}
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#endif /* CONFIG_BATMAN_ADV_DAT */
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#endif /* _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_ */
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