diff options
| author | Linus Lüssing <linus.luessing@c0d3.blue> | 2023-09-07 04:09:08 +0300 |
|---|---|---|
| committer | Simon Wunderlich <sw@simonwunderlich.de> | 2023-11-14 10:16:34 +0300 |
| commit | 07afe1ba288c04280622fa002ed385f1ac0b6fe6 (patch) | |
| tree | 038c9adbac0b7a1e55851fc7665d2fb3d8991628 /net/batman-adv/routing.h | |
| parent | e4679a1b8a73584c5774af0fe19bcece94245487 (diff) | |
| download | linux-07afe1ba288c04280622fa002ed385f1ac0b6fe6.tar.xz | |
batman-adv: mcast: implement multicast packet reception and forwarding
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>
Diffstat (limited to 'net/batman-adv/routing.h')
| -rw-r--r-- | net/batman-adv/routing.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/batman-adv/routing.h b/net/batman-adv/routing.h index afd15b3879f1..e9849f032a24 100644 --- a/net/batman-adv/routing.h +++ b/net/batman-adv/routing.h @@ -27,6 +27,17 @@ int batadv_recv_frag_packet(struct sk_buff *skb, struct batadv_hard_iface *iface); int batadv_recv_bcast_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if); +#ifdef CONFIG_BATMAN_ADV_MCAST +int batadv_recv_mcast_packet(struct sk_buff *skb, + struct batadv_hard_iface *recv_if); +#else +static inline int batadv_recv_mcast_packet(struct sk_buff *skb, + struct batadv_hard_iface *recv_if) +{ + kfree_skb(skb); + return NET_RX_DROP; +} +#endif int batadv_recv_unicast_tvlv(struct sk_buff *skb, struct batadv_hard_iface *recv_if); int batadv_recv_unhandled_unicast_packet(struct sk_buff *skb, |