es58x_send_msg(9)

💖 NAME 💖

es58x_send_msg — Prepare an URB and submit it.

and yes bestie, this is es58x_send_msg(9) from the Kernel API Manual — she's here to make an URB happen and she's slaying 💅✨

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✨ SYNOPSIS ✨

int es58x_send_msg (struct es58x_device *es58x_dev , u8 cmd_type , u8
       cmd_id , const void *msg , u16 msg_len , int channel_idx );

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🎀 ARGUMENTS 🎀

• es58x_dev — the ES58X device, periodt.
• cmd_type — command type.
• cmd_id — command ID.
• msg — the ES58X message to be sent.
• msg_len — length of msg.
• channel_idx — index of the network device.

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🦋 DESCRIPTION 🦋

okay so it creates an URB command from a given message, sets the header and the CRC, and then submits it. literally the whole little glow-up in one go ✨

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🌈 RETURN 🌈

zero on success, errno when any error occurs. no cap 😌

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👑 SEE ALSO 👑

the kernel file is literally ./drivers/net/can/usb/etas_es58x/es58x_core.c — peek at the lore 📂 — and the whole friend group is: 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_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) 🫶💜

source/version lives at ./drivers/net/can/usb/etas_es58x, dated October 2026, page es58x_send_msg(9) — okay bye bestie, go submit that URB 🌸✨