This adds the possibility to attach multicast announcements - so called MCAs - to OGMs. It also adds a packet structure for the multicast path selection and a packet types needed for the future multicast optimizations.
Signed-off-by: Linus Lüssing <[email protected]> --- hard-interface.c | 1 + packet.h | 43 ++++++++++++++++++++++++++++++++++--------- 2 files changed, 35 insertions(+), 9 deletions(-) diff --git a/hard-interface.c b/hard-interface.c index 4f95777..2b502be 100644 --- a/hard-interface.c +++ b/hard-interface.c @@ -313,6 +313,7 @@ int hardif_enable_interface(struct batman_if *batman_if, char *iface_name) batman_packet->ttl = 2; batman_packet->tq = TQ_MAX_VALUE; batman_packet->num_hna = 0; + batman_packet->num_mca = 0; batman_if->if_num = bat_priv->num_ifaces; bat_priv->num_ifaces++; diff --git a/packet.h b/packet.h index b49fdf7..bf87ef6 100644 --- a/packet.h +++ b/packet.h @@ -24,15 +24,17 @@ #define ETH_P_BATMAN 0x4305 /* unofficial/not registered Ethertype */ -#define BAT_PACKET 0x01 -#define BAT_ICMP 0x02 -#define BAT_UNICAST 0x03 -#define BAT_BCAST 0x04 -#define BAT_VIS 0x05 -#define BAT_UNICAST_FRAG 0x06 +#define BAT_PACKET 0x01 +#define BAT_ICMP 0x02 +#define BAT_UNICAST 0x03 +#define BAT_BCAST 0x04 +#define BAT_VIS 0x05 +#define BAT_UNICAST_FRAG 0x06 +#define BAT_MCAST 0x07 +#define BAT_MCAST_TRACKER 0x08 /* this file is included by batctl which needs these defines */ -#define COMPAT_VERSION 12 +#define COMPAT_VERSION 13 #define DIRECTLINK 0x40 #define VIS_SERVER 0x20 #define PRIMARIES_FIRST_HOP 0x10 @@ -60,9 +62,9 @@ struct batman_packet { uint8_t orig[6]; uint8_t prev_sender[6]; uint8_t ttl; - uint8_t num_hna; uint8_t gw_flags; /* flags related to gateway class */ - uint8_t align; + uint8_t num_hna; + uint8_t num_mca; } __attribute__((packed)); #define BAT_PACKET_LEN sizeof(struct batman_packet) @@ -120,6 +122,29 @@ struct bcast_packet { uint32_t seqno; } __attribute__((packed)); +struct mcast_packet { + uint8_t packet_type; /* BAT_MCAST */ + uint8_t version; /* batman version field */ + uint8_t orig[6]; + uint8_t ttl; + uint32_t seqno; +} __attribute__((packed)); + +/* marks the path for multicast streams */ +struct mcast_tracker_packet { + uint8_t packet_type; /* BAT_MCAST_TRACKER */ + uint8_t version; /* batman version field */ + uint8_t orig[6]; + uint8_t ttl; + uint8_t num_mcast_entries; + uint8_t align[2]; +} __attribute__((packed)); + +struct mcast_entry { + uint8_t mcast_addr[6]; + uint8_t num_dest; /* number of multicast data receivers */ +}; + struct vis_packet { uint8_t packet_type; uint8_t version; /* batman version field */ -- 1.7.1
