es58x_open(9)

💖 es58x_open(9) — the Kernel API Manual's own little main-character moment 💖

okay so bestie, welcome to es58x_open(9) from the Kernel API Manual — yes, that Kernel API Manual, the one you've been avoiding. don't worry, i got you 🫶

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✨ NAME ✨

es58x_open — enable the network device. that's it. that's the whole job. she turns the thing on 💅

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🌸 SYNOPSIS 🌸

int es58x_open (struct net_device *netdev );

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🎀 ARGUMENTS 🎀

• netdev — the CAN network device. that's your girl right there, the one we're opening 🦋

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⭐ DESCRIPTION ⭐

so here's the tea ☕ — es58x_open gets called whenever the network transitions to the up state. like, the vibe check passed, we're going up, we're live.

when that happens it:

• allocates the URB resources, but only if needed (she's not wasteful, she's efficient 💅), and
• opens the channel.

that's the whole glow-up. lowkey iconic, highkey essential. no cap ✨

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🔥 RETURN 🔥

• zero on success — we love a win 💖
• errno when any error occurs — and yes, she will absolutely tell you which one 😭

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🌈 SEE ALSO 🌈

the kernel file, bestie, right here:

./drivers/net/can/usb/etas_es58x/es58x_core.c

and the whole entire friend group — every single one of them, not skipping a single one, periodt 👑

es58x_calculate_crc(9), es58x_get_crc(9), es58x_set_crc(9), es58x_check_crc(9), es58x_timestamp_to_ns(9), es58x_set_skb_timestamp(9), es58x_rx_timestamp(9), es58x_set_realtime_diff_ns(9), es58x_is_can_state_active(9), es58x_is_echo_skb_threshold_reached(9), es58x_can_free_echo_skb_tail(9), es58x_can_get_echo_skb_recovery(9), es58x_can_get_echo_skb(9), es58x_can_reset_echo_fifo(9), es58x_flush_pending_tx_msg(9), es58x_tx_ack_msg(9), es58x_rx_can_msg(9), es58x_rx_err_msg(9), es58x_cmd_ret_desc(9), es58x_rx_cmd_ret_u8(9), es58x_rx_cmd_ret_u32(9), es58x_increment_rx_errors(9), es58x_handle_urb_cmd(9), es58x_check_rx_urb(9), es58x_copy_to_cmd_buf(9), es58x_split_urb_try_recovery(9), es58x_handle_incomplete_cmd(9), es58x_split_urb(9), es58x_read_bulk_callback(9), es58x_write_bulk_callback(9), es58x_alloc_urb(9), es58x_get_tx_urb(9), es58x_submit_urb(9), es58x_send_msg(9), es58x_alloc_rx_urbs(9), es58x_free_urbs(9), es58x_stop(9), es58x_xmit_commit(9), es58x_xmit_more(9), es58x_start_xmit(9), es58x_set_mode(9), es58x_init_priv(9), es58x_init_netdev(9), es58x_free_netdevs(9), es58x_init_es58x_dev(9), es58x_probe(9), es58x_disconnect(9)

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seriously though bestie, read es58x_stop(9) too — she's the other half of this whole thing and the two of them are literally a matched set 💜

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and that's the page!! source path is ./drivers/net/can/usb/etas_es58x and the date stamp says October 2026, so yeah, she's fresh, she's current, she's giving timestamped-and-verified 🧚✨ mwah, go open some network devices 💅💖