es58x_split_urb(9)

💅 es58x_split_urb(9) — like, the Kernel API Manual, bestie ✨

okay so we're deep in the es58x lore today, and honestly? this one's a lil baddie that does exactly what it says on the tin. it's giving "divide and conquer" energy. 🌸

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✨ NAME ✨

es58x_split_urb — cut the received URB in individual URB commands. that's it, that's the vibe. 🎀

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🦋 SYNOPSIS 🦋

signed int es58x_split_urb (struct es58x_device *es58x_dev , struct urb *urb );

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💖 ARGUMENTS 💖

• es58x_dev — the ES58X device, obvi. our main character. 👑
• urb — the last urb buffer received. the one that just showed up to the group chat. 📥

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🌈 DESCRIPTION 🌈

so here's the tea ☕ — the device might send urb in bulk format, which lowkey means several URB commands all concatenated together in one big blob. multiple commands. one urb. chaos, honestly. 💀

this function? it splits all the commands contained in the urb. every single one. it's the friend who separates everyone's snacks into lil labeled baggies. iconic behavior. 🍓

and it can throw these back at you:

• -ENODATA — if the URB command is incomplete. like a text that cuts off mid-sent
• -EBADMSG — if the URB command is incorrect. not me receiving corrupted data 🙈

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⭐ RETURN ⭐

on success it gives you the number of bytes consumed from urb. that's the receipts, bestie — how much of the buffer got eaten. no cap. 🔥

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🫶 SEE ALSO 🫶

kernel file ./drivers/net/can/usb/etas_es58x/es58x_core.c — the mothership, go read it. 💜

and the whole extended fam, in order, because we don't skip anyone in this house:

• 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_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_open(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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and that's a wrap on our lil splitter 🧚 this page lives in ./drivers/net/can/usb/etas_es58x, dated October 2026, and it's the es58x_split_urb(9) page from the Kernel API Manual — go off, king. 💅✨