xcanfd_rx(9)

📦 version 7.3.1, in nixpkgs unstable

💖 xcanfd_rx — the Kernel API Manual page, bestie edition 💖

okay so this is xcanfd_rx(9) from the Kernel API Manual, and honestly? she's a little legend. sit down, grab a boba, let's get into it 🧋✨

✨ NAME ✨

xcanfd_rx — the function that gets called from the CAN isr to finish up the processing of a received frame. like, the isr does the hand-off and xcanfd_rx takes it to the finish line 🏁

🎀 SYNOPSIS 🎀

int xcanfd_rx (struct net_device *ndev , int frame_base );

that's her signature, no cap. int in, int out, two arguments, slay 💅

🌸 ARGUMENTS 🌸

  • ndev — a pointer to the net_device structure. yes, that net_device. the one you already know and love 🫶
  • frame_base — the register offset to the frame that needs to be read. it's literally telling you where the frame lives 🔍

🦋 DESCRIPTION 🦋

so this function gets invoked from the CAN isr (the poll one) to process the Rx frames 💖 she keeps it cute and does only minimal processing — like, lowkey she's not doing the whole thing herself — and then she invokes netif_receive_skb to complete the rest of the processing ✨

it's giving delegation queen. she does her bit, hands it off, done. iconic behaviour fr fr 👑

⭐ RETURN ⭐

  • 1 on success 🎉
  • 0 on failure 😭

that's it. that's the whole return section. no in-between, no vibes, just 1 or 0 💀

🌈 SEE ALSO 🌈

okay this list is LONG and we're getting through all of it because nobody gets left behind bestie 🫶 starting with the kernel file ./drivers/net/can/xilinx_can.c and struct xcan_priv(9), then:

every single one, accounted for, no skips 💜

ngl that's the whole page. she's short, she's sweet, she processes Rx frames from the isr and she does it with main character energy 🔥

and that's a wrap!! this one lives over in ./drivers/net/can and the page is dated October 2026 — ty for reading bestie, mwah 💋🎀✨

📦 where this page comes from