genlmsg_multicast(9)

✨ NAME ✨

okay so bestie, this page is from the Kernel API Manual, and it's literally called genlmsg_multicast(9). The NAME section says this function will multicast a netlink message to the default netns — yes, the default netns, no cap. 💅

🦋 SYNOPSIS 🦋

the signature is giving:

int genlmsg_multicast (const struct genl_family *family , struct sk_buff
       *skb , u32 portid , unsigned int group , gfp_t flags );

💖 ARGUMENTS 💖

• family — the generic netlink family. the main character, honestly.
• skb — the netlink message, wrapped up as a socket buffer.
• portid — your own netlink portid, so you don't accidentally send the message to yourself. we love an anti-self-spam boundary.
• group — the offset of the multicast group inside the groups array.
• flags — allocation flags.

🌈 SEE ALSO 🌈

go read these too, iykyk:

• Kernel file ./include/net/genetlink.h
• struct genl_multicast_group(9)
• struct genl_family(9)
• struct genl_info(9)
• struct genl_small_ops(9)
• struct genl_ops(9)
• struct genl_split_ops(9)
• struct genl_dumpit_info(9)
• genl_info_init_ntf(9)
• genlmsg_iput(9)
• genlmsg_nlhdr(9)
• genlmsg_parse_deprecated(9)
• genlmsg_parse(9)
• genl_dump_check_consistent(9)
• genlmsg_put_reply(9)
• genlmsg_end(9)
• genlmsg_cancel(9)
• genlmsg_multicast_netns_filtered(9)
• genlmsg_multicast_netns(9)
• genlmsg_multicast_allns(9)
• genlmsg_unicast(9)
• genlmsg_reply(9)
• genlmsg_data(9)
• genlmsg_len(9)
• genlmsg_msg_size(9)
• genlmsg_total_size(9)
• genlmsg_new(9)
• genl_set_err(9)

okay that's the whole page, mwah 💋 — it came from source/version ./include/net, dated October 2026, and it's the genlmsg_multicast(9) page. 🎀🦋