batadv_mcast_forw_tt(9)

💖 batadv_mcast_forw_tt(9) — the kernel API manual page, bestie edition 💖

okay so real talk, this is batadv_mcast_forw_tt from the batadv kernel API manual, and it's literally the function that gets your multicast packet to the people who actually asked for it 🎀 no cap.

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✨ SYNOPSIS ✨

int batadv_mcast_forw_tt (struct batadv_priv *bat_priv , struct sk_buff
*skb , unsigned short vid );

like, three args in, one int out. slay. 💅

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🌸 ARGUMENTS 🌸

• bat_priv — the bat priv, aka the whole vibe container: it's holding all the mesh interface information 🫶
• skb — the multicast packet you're about to transmit, the actual main character of this whole operation ✨
• vid — the vlan identifier. yes queen, we know which vlan 🦋

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👑 DESCRIPTION 👑

So what does it do?? It sends copies of a frame with a multicast destination to any multicast listener registered in the translation table. and for each such destination node, a transmission is performed via a batman-adv unicast packet. it's giving "one packet in, a whole bunch of unicast packets out" energy 🔥

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💀 RETURN 💀

• NET_XMIT_DROP — when memory allocation fails 😭 (rough, honestly)
• NET_XMIT_SUCCESS — otherwise 💖 (the one we want)

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🌈 SEE ALSO 🌈

this is the part where the page just. keeps. going. and honestly? iconic. go read the kernel file ./net/batman-adv/multicast.c and also:

• batadv_mcast_start_timer(9)
• batadv_mcast_get_bridge(9)
• batadv_mcast_mla_rtr_flags_meshif_get_ipv4(9)
• batadv_mcast_mla_rtr_flags_meshif_get_ipv6(9)
• batadv_mcast_mla_rtr_flags_meshif_get(9)
• batadv_mcast_mla_rtr_flags_bridge_get(9)
• batadv_mcast_mla_rtr_flags_get(9)
• batadv_mcast_mla_forw_flags_get(9)
• batadv_mcast_mla_flags_get(9)
• batadv_mcast_mla_is_duplicate(9)
• batadv_mcast_mla_meshif_get_ipv4(9)
• batadv_mcast_mla_meshif_get_ipv6(9)
• batadv_mcast_mla_meshif_get(9)
• batadv_mcast_mla_br_addr_cpy(9)
• batadv_mcast_mla_bridge_get(9)
• batadv_mcast_mla_list_free(9)
• batadv_mcast_mla_tt_retract(9)
• batadv_mcast_mla_tt_add(9)
• batadv_mcast_querier_log(9)
• batadv_mcast_bridge_log(9)
• batadv_mcast_flags_log(9)
• batadv_mcast_mla_flags_update(9)
• __batadv_mcast_mla_update(9)
• batadv_mcast_mla_update(9)
• batadv_mcast_is_report_ipv4(9)
• batadv_mcast_forw_mode_check_ipv4(9)
• batadv_mcast_is_report_ipv6(9)
• batadv_mcast_forw_mode_check_ipv6(9)
• batadv_mcast_forw_mode_check(9)
• batadv_mcast_forw_want_all_ip_count(9)
• batadv_mcast_forw_rtr_count(9)
• batadv_mcast_forw_mode_by_count(9)
• batadv_mcast_forw_mode(9)
• batadv_mcast_forw_send_orig(9)
• batadv_mcast_forw_want_all_ipv4(9)
• batadv_mcast_forw_want_all_ipv6(9)
• batadv_mcast_forw_want_all(9)
• batadv_mcast_forw_want_all_rtr4(9)
• batadv_mcast_forw_want_all_rtr6(9)
• batadv_mcast_forw_want_rtr(9)
• batadv_mcast_forw_send(9)
• batadv_mcast_want_unsnoop_update(9)
• batadv_mcast_want_ipv4_update(9)
• batadv_mcast_want_ipv6_update(9)
• batadv_mcast_want_rtr4_update(9)
• batadv_mcast_want_rtr6_update(9)
• batadv_mcast_have_mc_ptype_update(9)
• batadv_mcast_tvlv_flags_get(9)
• batadv_mcast_tvlv_ogm_handler(9)
• batadv_mcast_init(9)
• batadv_mcast_mesh_info_put(9)
• batadv_mcast_flags_dump_entry(9)
• batadv_mcast_flags_dump_bucket(9)
• __batadv_mcast_flags_dump(9)
• batadv_mcast_netlink_get_primary(9)
• batadv_mcast_flags_dump(9)
• batadv_mcast_free(9)
• batadv_mcast_purge_orig(9)

like genuinely every single one, I'm not skipping a single bestie on this list 🫶✨

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and that's the whole page!! sign-off time: this glorious thing lives in ./net/batman-adv, it's dated October 2026, and it's brought to you by the Kernel API Manual 💜 mwah, go forward those packets, ily 🧚🌟