07afe1ba28
Implement functionality to receive and forward a new TVLV capable multicast packet type. The new batman-adv multicast packet type allows to contain several originator destination addresses within a TVLV. Routers on the way will potentially split the batman-adv multicast packet and adjust its tracker TVLV contents. Routing decisions are still based on the selected BATMAN IV or BATMAN V routing algorithm. So this new batman-adv multicast packet type retains the same loop-free properties. Also a new OGM multicast TVLV flag is introduced to signal to other nodes that we are capable of handling a batman-adv multicast packet and multicast tracker TVLV. And that all of our hard interfaces have an MTU of at least 1280 bytes (IPv6 minimum MTU), as a simple solution for now to avoid MTU issues while forwarding. Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) B.A.T.M.A.N. contributors:
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*
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* Marek Lindner, Simon Wunderlich
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*/
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#ifndef _NET_BATMAN_ADV_ROUTING_H_
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#define _NET_BATMAN_ADV_ROUTING_H_
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#include "main.h"
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#include <linux/skbuff.h>
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#include <linux/types.h>
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bool batadv_check_management_packet(struct sk_buff *skb,
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struct batadv_hard_iface *hard_iface,
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int header_len);
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void batadv_update_route(struct batadv_priv *bat_priv,
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struct batadv_orig_node *orig_node,
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struct batadv_hard_iface *recv_if,
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struct batadv_neigh_node *neigh_node);
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int batadv_recv_icmp_packet(struct sk_buff *skb,
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struct batadv_hard_iface *recv_if);
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int batadv_recv_unicast_packet(struct sk_buff *skb,
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struct batadv_hard_iface *recv_if);
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int batadv_recv_frag_packet(struct sk_buff *skb,
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struct batadv_hard_iface *iface);
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int batadv_recv_bcast_packet(struct sk_buff *skb,
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struct batadv_hard_iface *recv_if);
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#ifdef CONFIG_BATMAN_ADV_MCAST
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int batadv_recv_mcast_packet(struct sk_buff *skb,
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struct batadv_hard_iface *recv_if);
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#else
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static inline int batadv_recv_mcast_packet(struct sk_buff *skb,
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struct batadv_hard_iface *recv_if)
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{
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kfree_skb(skb);
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return NET_RX_DROP;
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}
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#endif
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int batadv_recv_unicast_tvlv(struct sk_buff *skb,
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struct batadv_hard_iface *recv_if);
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int batadv_recv_unhandled_unicast_packet(struct sk_buff *skb,
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struct batadv_hard_iface *recv_if);
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struct batadv_neigh_node *
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batadv_find_router(struct batadv_priv *bat_priv,
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struct batadv_orig_node *orig_node,
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struct batadv_hard_iface *recv_if);
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bool batadv_window_protected(struct batadv_priv *bat_priv, s32 seq_num_diff,
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s32 seq_old_max_diff, unsigned long *last_reset,
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bool *protection_started);
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#endif /* _NET_BATMAN_ADV_ROUTING_H_ */
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