tipc_send_group_mcast(9)

💅 tipc_send_group_mcast — the Kernel API Manual page, bestie edition ✨

Okay so you're reading tipc_send_group_mcast(9), which lives in the Kernel API Manual (yes, the fancy one), and honestly? It's giving "one job, does it well." It sends a message to all the members with a given identity. Group chat behavior, but for TIPC sockets. 🫶

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✨ SYNOPSIS ✨

int tipc_send_group_mcast (struct socket *sock , struct msghdr *m , int
dlen , long timeout );

Like, that's the whole function signature. Memorize it or don't, no cap. 💅

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🎀 ARGUMENTS 🎀

• sock — the socket structure. Your main character. The socket in question.
• m — the message to send. The actual content, the lore, the payload.
• dlen — total length of message data. How many bytes we're serving today.
• timeout — timeout to wait for wakeup. How long you're willing to sit there and wait. ⏰

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🌸 DESCRIPTION 🌸

So this function is called from tipc_sendmsg, and — important — that caller has already done all sanity checks. So by the time we get here, everything's been vetted. We're not re-checking anything, we're just sending. It's giving "my friend already checked the vibe, I'm just walking in." ✨

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🦋 RETURN 🦋

The number of bytes sent on success, or errno. That's it. That's the return. 📬

Lowkey pay attention to which one you got — a byte count and an errno are very different vibes, and mixing them up is not the move. 😭

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💜 SEE ALSO 💜

Kernel file ./net/tipc/socket.c, plus the whole extended friend group:

• struct tipc_sock(9)
• tsk_advance_rx_queue(9)
• tsk_rej_rx_queue(9)
• tipc_sk_create(9)
• tipc_release(9)
• __tipc_bind(9)
• tipc_getname(9)
• tipc_poll(9)
• tipc_sendmcast(9)
• tipc_send_group_msg(9)
• tipc_send_group_unicast(9)
• tipc_send_group_anycast(9)
• tipc_send_group_bcast(9)
• tipc_sk_mcast_rcv(9)
• tipc_sk_conn_proto_rcv(9)
• tipc_sendmsg(9)
• tipc_sendstream(9)
• tipc_send_packet(9)
• tipc_sk_set_orig_addr(9)
• tipc_sk_anc_data_recv(9)
• tipc_recvmsg(9)
• tipc_recvstream(9)
• tipc_write_space(9)
• tipc_data_ready(9)
• tipc_sk_filter_connect(9)
• rcvbuf_limit(9)
• tipc_sk_filter_rcv(9)
• tipc_sk_backlog_rcv(9)
• tipc_sk_enqueue(9)
• tipc_sk_rcv(9)
• tipc_connect(9)
• tipc_listen(9)
• tipc_accept(9)
• tipc_shutdown(9)
• tipc_setsockopt(9)
• tipc_getsockopt(9)
• tipc_socket_init(9)
• tipc_socket_stop(9)
• tipc_sk_filtering(9)
• tipc_sk_overlimit1(9)
• tipc_sk_overlimit2(9)
• tipc_sk_dump(9)

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🌈 SIGN-OFF 🌈

Source spot: ./net/tipc — dated October 2026 — and this whole glowing masterpiece is tipc_send_group_mcast(9), part of the Kernel API Manual. Go send your group message, queen. 👑💖