ctucan_get_berr_counter(9)

💅 ctucan_get_berr_counter 💅

okay so this is a page from the Kernel API Manual, section 9, and it's literally all about ctucan_get_berr_counter — the error counter routine. yes bestie, we're in the kernel now, put your hair up 🎀

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🌸 NAME 🌸

ctucan_get_berr_counter — the error counter routine, periodt ✨

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🦋 SYNOPSIS 🦋

int ctucan_get_berr_counter (const struct net_device *ndev , struct
can_berr_counter *bec );

like... it's giving "two pointers and a return value", and honestly? iconic 😌

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💖 ARGUMENTS 💖

• ndev — pointer to the net_device structure 🫶
• bec — pointer to the can_berr_counter structure 🫶

that's it. two args. main character energy fr fr.

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✨ DESCRIPTION ✨

so basically this is the driver error counter routine. that's the whole description. no notes, she said what she said 💅🔥

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🌈 RETURN 🌈

• 0 on success 🎀
• a failure value on error 😭

(not me telling you to check the return value — but like, check the return value 👀)

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👑 SEE ALSO 👑

the whole friend group shows up for this one, no cap:

• Kernel file ./drivers/net/can/ctucanfd/ctucanfd_base.c
• ctucan_state_to_str(9), ctucan_reset(9), ctucan_set_btr(9)
• ctucan_set_bittiming(9), ctucan_set_data_bittiming(9)
• ctucan_set_secondary_sample_point(9), ctucan_set_mode(9)
• ctucan_chip_start(9), ctucan_do_set_mode(9), ctucan_get_tx_status(9)
• ctucan_is_txt_buf_writable(9), ctucan_insert_frame(9)
• ctucan_give_txtb_cmd(9), ctucan_start_xmit(9), ctucan_read_rx_frame(9)
• ctucan_rx(9), ctucan_read_fault_state(9), ctucan_get_rec_tec(9)
• ctucan_err_interrupt(9), ctucan_rx_poll(9), ctucan_rotate_txb_prio(9)
• ctucan_tx_interrupt(9), ctucan_interrupt(9), ctucan_chip_stop(9)
• ctucan_open(9), ctucan_close(9)

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bestie reminder: this is section 9, kernel-space territory — read the whole squad before you go poking at error counters, mwah 💜

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and that's the page!! sign-off time: this one lives at ./drivers/net/can/ctucanfd, dated October 2026, and it's ctucan_get_berr_counter(9) from the Kernel API Manual — slay, go read the source, iykyk 🧚‍♀️💫🌸