xcan_current_error_state(9)

📦 version 7.3.1, in nixpkgs unstable

💅 xcan_current_error_state — the Kernel API Manual bestie 🫶

okay so you found the manual page for xcan_current_error_state(9), and honestly? it's a little guy with one job and it does it slayfully. it lives in the Kernel API Manual, and we're gonna go through it together, no cap ✨

🌸 NAME 🌸

xcan_current_error_state — get the current error state from the HW, periodt 💅

⭐ SYNOPSIS ⭐

enum can_state xcan_current_error_state (struct net_device *ndev );

that's it. that's the whole signature. she's compact, she's iconic, she returns an enum can_state and takes exactly one friend 🎀

🦋 ARGUMENTS 🦋

  • ndev — a pointer to the net_device structure. that's the whole thing, bestie, just hand her the net_device pointer and she's good 💖

🔥 DESCRIPTION 🔥

so what she actually does: she checks the current CAN error state straight from the HW — like, she goes and asks the hardware directly, main character energy, no middleman 🙈

⚠️ but listen, this is the important part — she only checks for ERROR_PASSIVE and ERROR_WARNING. that's it. do not come for her expecting more, she is very clear about her scope and honestly? respect 💀

👑 RETURN 👑

  • ERROR_PASSIVE or ERROR_WARNING — if either one of those is active, that's what you get back 💜
  • ERROR_ACTIVE — otherwise. the chill default. the "we're fine" state 🌈

✨ SEE ALSO ✨

the whole friend group, fr fr — every one of these is part of the same Xilinx CAN saga, and they all live in the kernel file ./drivers/net/can/xilinx_can.c 🧚

like, the entire roster. go read them, they're all lowkey important 💖

and that's the page!! go forth and check your error states, bestie 🦋

signing off from ./drivers/net/can, dated October 2026 — this version of the page is officially wrapped, mwah 💋

📦 where this page comes from