STRUCT MUX_ADGH(9)

💅 struct mux_adgh(9) — like, the Kernel API Manual page, bestie

okay so real talk, this is from the Kernel API Manual and it's about one (1) little struct that does a LOT of heavy lifting for aggregated datagrams ✨

✨ NAME ✨

struct mux_adgh — the Aggregated Datagram Header. yes that's its whole government name 🎀

🦋 SYNOPSIS 🦋

struct mux_adgh {
    __le32 signature;
    __le16 length;
    u8 if_id;
    u8 opt_ipv4v6;
    u8 service_class;
    u8 next_count;
    u8 reserved1[6];
 };

like, that's the whole vibe right there. eight fields, zero notes 💅

🌸 Members 🌸

• signature — the Signature of the Aggregated Datagram Header, and it is literally 0x48474441. no cap, that's the magic number, bestie 🔥
• length — how long the datagram header is, in bytes. and listen, this length shall include the header size itself (she's self-aware 💁‍♀️). Min value: 0x10 — that's the floor, do not go below it 🙈
• if_id — the ID of the interface that these datagrams belong to. every datagram's gotta know where it came from 🫶
• opt_ipv4v6 — tells you IPv4 (=0) or IPv6 (=1). It is optional, so if you're not using it, set it to zero. easy ✨
• service_class — the Service class identifier for the datagram. it's giving ✨priority✨ energy 👑
• next_count — the count of the datagrams that shall be following this datagram for this interface. and a count of zero means the next datagram may not belong to this interface 🧚 big "we're done here" energy
• reserved1 — reserved bytes. Set to zero. that's it, that's the whole job 💀

👑 SEE ALSO 👑

go look at the Kernel file ./drivers/net/wwan/iosm/iosm_ipc_mux_codec.h first, then the whole friend group:

• struct mux_cmdh(9)
• struct mux_acbh(9)
• struct mux_adbh(9)
• struct mux_adth(9)
• struct mux_lite_cmdh(9)
• struct mux_lite_vfl(9)
• struct ipc_mem_lite_gen_tbl(9)
• union mux_type_cmdh(9)
• union mux_type_header(9)
• ipc_mux_dl_acb_send_cmds(9)
• ipc_mux_netif_tx_flowctrl(9)
• ipc_mux_ul_trigger_encode(9)
• ipc_mux_ul_data_encode(9)
• ipc_mux_ul_encoded_process(9)

like the whole squad showed up to the group chat 🌈💖

aaaand that's the page!! sourced from ./drivers/net/wwan/iosm, dated October 2026 — mwah, kissing this manpage goodbye, hope you understood it fr fr ⭐🎀🦋💜