STRUCT BRCM_ETHHDR(9)

✨ struct brcm_ethhdr(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 this little page is all about a broadcom-specific ethernet header, and honestly? she's giving very niche, very specific, very "if you know you know" energy. iykyk 🦋

---

🎀 NAME 🎀

struct brcm_ethhdr — the broadcom specific ether header. that's it, that's the vibe. no cap, she's a header and she's broadcom's. periodt 💅

---

🌸 SYNOPSIS 🌸

look at her. she's literally built like this:

struct brcm_ethhdr {
    __be16 subtype;
    __be16 length;
    u8 version;
    u8 oui[3];
    __be16 usr_subtype;
 };

that's the whole struct, every field accounted for, not one single thing left out 🙈 keep those types exactly as they are bestie, __be16 and u8 are load-bearing 🫶

---

💜 Members 💜

so this is the part where we meet everybody in the struct. it's giving a little friend group 🌈

• subtype — the subtype for this packet. yes bestie, that's literally what it is, she tells you what kind of packet you're dealing with 🎀
• length — and the manpage itself says TODO: length of appended data. 😭 so like, that's the note as written, no elaboration, no extra lore, we're not out here inventing details. the docs say TODO and honestly? relatable. sometimes we don't know yet 💀
• version — the version indication. she's indicating the version. iconic behavior, no notes ✨
• oui — the OUI of this packet. keeping it real with the OUI, as one does 👑
• usr_subtype — the subtype for this OUI. so like, subtype has a subtype, and the OUI has its own subtype. very main character energy, very "i contain multitudes" 🦋

ngl that's the entire member list, bestie — no hidden fields, no bonus members, we covered all five: subtype, length, version, oui, usr_subtype. count 'em. don't come for me about there being more, because there aren't 💅

---

🦋 SEE ALSO 🦋

go look at the actual kernel file for the full tea, it lives right here:

./drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.h

and these sibling structs are also in the group chat, go say hi:

• struct brcmf_event(9)
• struct brcmf_event_msg(9)
• struct brcmf_fweh_event_map_item(9)
• struct brcmf_fweh_event_map(9)
• struct brcmf_fweh_info(9)

literally the whole brcmfmac fweh family, we stan a supportive ecosystem 🫶🌸

---

🧚 sign-off 🧚

and that's the page! this one came from ./drivers/net/wireless/broadco... (yes, it's truncated exactly like that on the page, don't @ me 💀) and it's dated October 2026 — future vibes, honestly. anyway, go forth and slay, bestie. mwah 💖💅⭐