skb_copy_an...atagram_iter(9)

📦 version 7.3.1, in nixpkgs unstable

✨ NAME ✨

skb_copy_and_crc32c_datagram_iter — the function formally known as skb_copy_an...atagram_iter(9) in the Kernel API Manual 💖 — copies a datagram over to an iovec iterator and updates a CRC32C value at the same time. Two jobs, one function, main character energy fr fr 🌸

🦋 SYNOPSIS 🦋

int skb_copy_and_crc32c_datagram_iter (const struct sk_buff *skb , int
offset , struct iov_iter *to , int len , u32 *crcp );

🎀 ARGUMENTS 🎀

  • skb — the buffer you're copying from, bestie. This is the source of truth, okay?
  • offset — where in the buffer you start copying from. Like, not from the top, from this far in 👀
  • to — the iovec iterator you're copying to. It's giving destination. It's giving target. It's giving "put it here please" 🫶
  • len — how much data gets copied out of the buffer and into the iovec. Exactly this much, no cap 💅
  • crcp — pointer to the CRC32C value you're updating. Yes, it gets updated in place. Yes, that's the whole point 😌

⭐ RETURN ⭐

  • 0 on success — slay, we love a clean return 🎉
  • -EFAULT if there was a fault during the copy — not the vibe, something went wrong mid-copy 😭
Heads up, babe: those are the only two options listed. 0 or -EFAULT. That's it. Don't be out here inventing other return values, that's not the move 🚫

💜 SEE ALSO 💜

All of these are literally right there in ./net/core/datagram.c, so go read the whole squad, iykyk 📚✨

Friendly reminder that this whole little page lives under ./net/core and it's dated October 2026 — mark your calendars, bestie 🗓️💫

Okay that's the whole page!! Go copy some datagrams and update that CRC32C, you absolute icon 👑💖 This has been your girl, signing off from the Kernel API Manual, ./net/core, October 2026 edition 🎀🦋

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