STRUCT W1_NETLINK_MSG(9)

💖 NAME 💖

Okay bestie, welcome to the Kernel API Manual page for struct w1_netlink_msg(9) — and it literally holds w1 message type, id, and result. Slay ✨

🌸 SYNOPSIS 🌸

struct w1_netlink_msg {
    __u8 type;
    __u8 status;
    __u16 len;
    union {
      __u8 id[8];
      struct w1_mst {
        __u32 id;
        __u32 res;
      } mst;
    } id;
    __u8 data[];
 };

No cap, that's the whole shape 🫶

🎀 Members 🎀

• type — one of enum w1_netlink_message_types.
• status — kernel feedback for success 0 or errno failure value.
• len — length of data following w1_netlink_msg.
• id — union holding bus master id (msg.id) and slave device id (id[8]).
• id.id — Slave ID (8 bytes).
• id.mst — bus master identification.
• id.mst.id — bus master ID.
• id.mst.res — bus master reserved.
• data — start address of any following data.

The way these fields just line up? Obsessed 💅

🔥 Description 🔥

This is the base message structure for w1 messages over netlink, periodt. The netlink connector data sequence is, struct nlmsghdr, struct cn_msg, then one or more struct w1_netlink_msg (each with optional data). Like a little chain of messages, iykyk 🌈

👑 SEE ALSO 👑

Go be nosy, bestie:

• Kernel file ./drivers/w1/w1_netlink.h
• enum w1_cn_msg_flags(9)
• enum w1_netlink_message_types(9)
• enum w1_commands(9)
• struct w1_netlink_cmd(9)

Signed off with ./drivers/w1, October 2026, and all the love for struct w1_netlink_msg(9) 🫶💅