oa_tc6_start_xmit(9)

📦 version 7.3.1, in nixpkgs unstable

💅 oa_tc6_start_xmit(9) 🦋

okay so this is a page straight outta the Kernel API Manual, and it's all about oa_tc6_start_xmit — the function that actually gets your tx skb out the door. yes bestie, the skb that's carrying an ethernet frame. it's the whole send-it moment. let's go ✨

🌸 SYNOPSIS 🌸

netdev_tx_t oa_tc6_start_xmit (struct oa_tc6 *tc6 , struct sk_buff *skb
);

that's the whole signature, no cap. two args, one return type netdev_tx_t, and it's serving main-character energy in your transmit path 🔥

🎀 ARGUMENTS 🎀

  • tc6 — your oa_tc6 struct. the whole context object, the vibe holder, the thing that knows what's going on 💖
  • skb — the socket buffer, and inside it is where the ethernet frame is stored. this is the actual cargo, the packet itself 🍓

👑 RETURN 👑

so what comes back out of this icon? it's giving two possible answers:

  • NETDEV_TX_OK — returned either when the packet got successfully queued for transmission or when the packet got dropped. and yes, both of those are the same return value, no cap 😭💀
  • NETDEV_TX_BUSY — returned when there's literally no room to queue the packet. the queue is full, the club is at capacity, come back later 🙈
✨ important deets on the dropping situation, bestie: a packet can get dropped because linearizing the buffer failed, or because disable_traffic is set from an earlier fatal error. so if you see a drop, it's not random, something upstream already went sideways. fr fr keep that in mind 🫶

💜 SEE ALSO 💜

okay the cross-references, because this function does not exist alone, she has a whole friend group 🌈

Kernel file ./drivers/net/ethernet/oa_tc6.c and all of these lovely little functions:

like, the whole oa_tc6 family tree is right there. go read them, iykyk 📚💅

✿ and that's the page! ✿ this lil slice of manual lives under ./drivers/net/ethernet, stamped October 2026 — mwah, go queue some packets bestie 💖🎀🦋

📦 where this page comes from