ctucan_open(9)

✨ ctucan_open(9) ✨

okay so bestie, welcome to the Kernel API Manual — this one's about ctucan_open, and it's honestly a whole mood. it's the driver open routine, it's giving "first day of school" energy 🎒, and we're gonna get through it together. no cap.

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🌸 NAME 🌸

ctucan_open — the driver open routine. that's it, that's the whole name. iconic of it, honestly 💅

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🦋 SYNOPSIS 🦋

int ctucan_open (struct net_device *ndev );

one function, one argument, one int coming back atcha. slay.

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🎀 ARGUMENTS 🎀

• ndev — a pointer to the net_device structure. that's your net device bestie, she's the main character here 👑

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💖 DESCRIPTION 💖

so like. this is the driver open routine. periodt. ✨ that's the whole description and we're not gonna pretend it's deeper than that — it's the thing that gets called when the driver opens up, fr fr.

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🌈 RETURN 🌈

• returns 0 on success 💚
• returns a failure value on error 😭

like yes we love a zero, but if something goes sideways you're getting a failure value back, and that's the vibe check.

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👑 SEE ALSO 👑

the kernel file lives right here: ./drivers/net/can/ctucanfd/ctucanfd_base.c 📁

and here's the whole friend group, all the siblings and cousins of this function — go say hi 🫶:

• 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_close(9)
• ctucan_get_berr_counter(9)

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💀 real talk: this page is ./drivers/net/can/ctucanfd, dated October 2026, and it's literally just ctucan_open(9) doing her little thing. go off queen 🧚‍♀️💜

that's the whole page bestie, you ate it up, iykyk 🍓✨