diff options
Diffstat (limited to 'net/batman-adv/bridge_loop_avoidance.h')
| -rw-r--r-- | net/batman-adv/bridge_loop_avoidance.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/net/batman-adv/bridge_loop_avoidance.h b/net/batman-adv/bridge_loop_avoidance.h new file mode 100644 index 000000000..af28fdb01 --- /dev/null +++ b/net/batman-adv/bridge_loop_avoidance.h @@ -0,0 +1,162 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2011-2018 B.A.T.M.A.N. contributors: + * + * 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_BLA_H_ +#define _NET_BATMAN_ADV_BLA_H_ + +#include "main.h" + +#include <linux/compiler.h> +#include <linux/stddef.h> +#include <linux/types.h> + +struct net_device; +struct netlink_callback; +struct seq_file; +struct sk_buff; + +/** + * batadv_bla_is_loopdetect_mac() - check if the mac address is from a loop + * detect frame sent by bridge loop avoidance + * @mac: mac address to check + * + * Return: true if the it looks like a loop detect frame + * (mac starts with BA:BE), false otherwise + */ +static inline bool batadv_bla_is_loopdetect_mac(const uint8_t *mac) +{ + if (mac[0] == 0xba && mac[1] == 0xbe) + return true; + + return false; +} + +#ifdef CONFIG_BATMAN_ADV_BLA +bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, + unsigned short vid, int packet_type); +bool batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, + unsigned short vid); +bool batadv_bla_is_backbone_gw(struct sk_buff *skb, + struct batadv_orig_node *orig_node, + int hdr_size); +int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset); +int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb); +int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, + void *offset); +int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb); +bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig, + unsigned short vid); +bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv, + struct sk_buff *skb); +void batadv_bla_update_orig_address(struct batadv_priv *bat_priv, + struct batadv_hard_iface *primary_if, + struct batadv_hard_iface *oldif); +void batadv_bla_status_update(struct net_device *net_dev); +int batadv_bla_init(struct batadv_priv *bat_priv); +void batadv_bla_free(struct batadv_priv *bat_priv); +int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb); +#ifdef CONFIG_BATMAN_ADV_DAT +bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr, + unsigned short vid); +#endif +#define BATADV_BLA_CRC_INIT 0 +#else /* ifdef CONFIG_BATMAN_ADV_BLA */ + +static inline bool batadv_bla_rx(struct batadv_priv *bat_priv, + struct sk_buff *skb, unsigned short vid, + int packet_type) +{ + return false; +} + +static inline bool batadv_bla_tx(struct batadv_priv *bat_priv, + struct sk_buff *skb, unsigned short vid) +{ + return false; +} + +static inline bool batadv_bla_is_backbone_gw(struct sk_buff *skb, + struct batadv_orig_node *orig_node, + int hdr_size) +{ + return false; +} + +static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, + void *offset) +{ + return 0; +} + +static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, + void *offset) +{ + return 0; +} + +static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, + u8 *orig, unsigned short vid) +{ + return false; +} + +static inline bool +batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv, + struct sk_buff *skb) +{ + return false; +} + +static inline void +batadv_bla_update_orig_address(struct batadv_priv *bat_priv, + struct batadv_hard_iface *primary_if, + struct batadv_hard_iface *oldif) +{ +} + +static inline int batadv_bla_init(struct batadv_priv *bat_priv) +{ + return 1; +} + +static inline void batadv_bla_free(struct batadv_priv *bat_priv) +{ +} + +static inline int batadv_bla_claim_dump(struct sk_buff *msg, + struct netlink_callback *cb) +{ + return -EOPNOTSUPP; +} + +static inline int batadv_bla_backbone_dump(struct sk_buff *msg, + struct netlink_callback *cb) +{ + return -EOPNOTSUPP; +} + +static inline +bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr, + unsigned short vid) +{ + return true; +} + +#endif /* ifdef CONFIG_BATMAN_ADV_BLA */ + +#endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */ |