188 lines
4.9 KiB
C
188 lines
4.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2011-2018 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 netlink_callback;
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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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int batadv_dat_cache_dump(struct sk_buff *msg, struct netlink_callback *cb);
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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 int
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batadv_dat_cache_dump(struct sk_buff *msg, struct netlink_callback *cb)
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{
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return -EOPNOTSUPP;
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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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