wx_cleanup_headers(9)

📦 version 7.3.1, in nixpkgs unstable

💖 wx_cleanup_headers(9) 💖

okay so bestie, welcome to the Kernel API Manual — this one's wx_cleanup_headers, and it's literally the lil fixer-upper of the Rx path. no cap, it's giving "janitor energy but make it iconic" 🧚✨

🌸 NAME 🌸

wx_cleanup_headers — correcting corrupted or empty headers. yep, that's the whole vibe. she fixes headers that are messed up OR straight-up missing 💅

✨ SYNOPSIS ✨

bool wx_cleanup_headers (struct wx_ring *rx_ring , union wx_rx_desc
*rx_desc , struct sk_buff *skb );

three args in, one bool out. she's returnin' a bool and you will be checking it, mkay? 🫶

🎀 ARGUMENTS 🎀

  • rx_ring — the rx descriptor ring that the packet is being transacted on rn. like, this is the ring she's working her magic in 🦋
  • rx_desc — pointer to the EOP Rx descriptor. EOP = end of packet, iykyk 👑
  • skb — pointer to the current skb that's being fixed. this is the glow-up target fr 💖

💅 DESCRIPTION 💅

so here's the tea ☕ — she checks for corrupted packet headers caused by senders on the local L2 embedded NIC switch not setting up their Tx Descriptors right. like, they just didn't do it properly. rude, but okay 🙈

and the manpage is very clear about this: these should be very rare. so if you're seeing them a lot, that's a vibe check failure, not normal 💀

she also handles the case where we're pulling data in on pages only, and as such no data is present in the skb header. literally nothing in the header. empty. a void. and she deals with it ✨

in addition — and this part matters, bestie — if the skb is not at least 60 bytes, we need to pad it so it's large enough to qualify as a valid Ethernet frame. sixty. bytes. minimum. that's the rule, periodt 🌈

she returns true if an error was encountered and the skb was freed. that's your "something went sideways" signal, so please handle it, don't just ignore the return value 😭

🦋 SEE ALSO 🦋

kernel file: ./drivers/net/ethernet/wangxun/libwx/wx_lib.c — that's where she lives, go say hi 🏠

and the whole friend group, in order:

that's the whole squad. no one's getting left out of the group chat 🔥

mwah 💋 that's the page! sourced from ./drivers/net/ethernet/wangxun... dated October 2026, and she's filed under wx_cleanup_headers(9) — go forth and pad those frames, bestie 🎀💖✨

📦 where this page comes from