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Diffstat (limited to 'net/batman-adv/distributed-arp-table.h')
| -rw-r--r-- | net/batman-adv/distributed-arp-table.h | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/net/batman-adv/distributed-arp-table.h b/net/batman-adv/distributed-arp-table.h new file mode 100644 index 000000000000..d060c033e7de --- /dev/null +++ b/net/batman-adv/distributed-arp-table.h @@ -0,0 +1,167 @@ +/* Copyright (C) 2011-2012 B.A.T.M.A.N. contributors: + * + * Antonio Quartulli + * + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA + */ + +#ifndef _NET_BATMAN_ADV_ARP_H_ +#define _NET_BATMAN_ADV_ARP_H_ + +#ifdef CONFIG_BATMAN_ADV_DAT + +#include "types.h" +#include "originator.h" + +#include <linux/if_arp.h> + +#define BATADV_DAT_ADDR_MAX ((batadv_dat_addr_t)~(batadv_dat_addr_t)0) + +bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv, + struct sk_buff *skb); +bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv, + struct sk_buff *skb, int hdr_size); +void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv, + struct sk_buff *skb); +bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv, + struct sk_buff *skb, int hdr_size); +bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv, + struct batadv_forw_packet *forw_packet); + +/** + * batadv_dat_init_orig_node_addr - assign a DAT address to the orig_node + * @orig_node: the node to assign the DAT address to + */ +static inline void +batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node) +{ + uint32_t addr; + + addr = batadv_choose_orig(orig_node->orig, BATADV_DAT_ADDR_MAX); + orig_node->dat_addr = (batadv_dat_addr_t)addr; +} + +/** + * batadv_dat_init_own_addr - assign a DAT address to the node itself + * @bat_priv: the bat priv with all the soft interface information + * @primary_if: a pointer to the primary interface + */ +static inline void +batadv_dat_init_own_addr(struct batadv_priv *bat_priv, + struct batadv_hard_iface *primary_if) +{ + uint32_t addr; + + addr = batadv_choose_orig(primary_if->net_dev->dev_addr, + BATADV_DAT_ADDR_MAX); + + bat_priv->dat.addr = (batadv_dat_addr_t)addr; +} + +int batadv_dat_init(struct batadv_priv *bat_priv); +void batadv_dat_free(struct batadv_priv *bat_priv); +int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset); + +/** + * batadv_dat_inc_counter - increment the correct DAT packet counter + * @bat_priv: the bat priv with all the soft interface information + * @subtype: the 4addr subtype of the packet to be counted + * + * Updates the ethtool statistics for the received packet if it is a DAT subtype + */ +static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv, + uint8_t subtype) +{ + switch (subtype) { + case BATADV_P_DAT_DHT_GET: + batadv_inc_counter(bat_priv, + BATADV_CNT_DAT_GET_RX); + break; + case BATADV_P_DAT_DHT_PUT: + batadv_inc_counter(bat_priv, + BATADV_CNT_DAT_PUT_RX); + break; + } +} + +#else + +static inline bool +batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv, + struct sk_buff *skb) +{ + return false; +} + +static inline bool +batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv, + struct sk_buff *skb, int hdr_size) +{ + return false; +} + +static inline bool +batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv, + struct sk_buff *skb) +{ + return false; +} + +static inline bool +batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv, + struct sk_buff *skb, int hdr_size) +{ + return false; +} + +static inline bool +batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv, + struct batadv_forw_packet *forw_packet) +{ + return false; +} + +static inline void +batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node) +{ +} + +static inline void batadv_dat_init_own_addr(struct batadv_priv *bat_priv, + struct batadv_hard_iface *iface) +{ +} + +static inline void batadv_arp_change_timeout(struct net_device *soft_iface, + const char *name) +{ +} + +static inline int batadv_dat_init(struct batadv_priv *bat_priv) +{ + return 0; +} + +static inline void batadv_dat_free(struct batadv_priv *bat_priv) +{ +} + +static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv, + uint8_t subtype) +{ +} + +#endif /* CONFIG_BATMAN_ADV_DAT */ + +#endif /* _NET_BATMAN_ADV_ARP_H_ */ |