ca8210_test_...driver_write(9)

💖 ca8210_test_...driver_write(9) 💖

okay so bestie, this page is from the Kernel API Manual and it's all about ca8210_test_int_driver_write — the function that writes a message to the test interface so userspace can read it. lowkey iconic kernel plumbing. 🫶

✨ NAME ✨

ca8210_test_int_driver_write — writes a message to the test interface to be read by the userspace. literally that's the job. 💌

🌸 SYNOPSIS 🌸

int ca8210_test_int_driver_write (const u8 *buf , size_t len , void *spi
);

🎀 ARGUMENTS 🎀

• buf — buffer containing upstream message. this is the message cargo, bestie. 📦
• len — length of message to write. yes, the size, the amount, the literal length. 📏
• spi — SPI device of message originator. it's giving "who sent this?" energy. 🔌

🦋 RETURN 🦋

Returns 0 or a linux error code. that's the whole return vibe — nothing extra, no secret bonus values. ✨

🌈 SEE ALSO 🌈

okay bestie, the cross-refs are extensive and we are not skipping a single one. go stalk the kernel file ./drivers/net/ieee802154/ca8210.c and all of these:

• struct cas_control(9)
• struct ca8210_test(9)
• struct ca8210_priv(9)
• struct work_priv_container(9)
• struct ca8210_platform_data(9)
• struct fulladdr(9)
• union macaddr(9)
• struct secspec(9)
• link_to_linux_err(9)
• ca8210_reset_send(9)
• ca8210_mlme_reset_worker(9)
• ca8210_rx_done(9)
• ca8210_spi_transfer_complete(9)
• ca8210_spi_transfer(9)
• ca8210_spi_exchange(9)
• ca8210_interrupt_handler(9)
• tdme_setsfr_request_sync(9)
• tdme_chipinit(9)
• tdme_channelinit(9)
• tdme_checkpibattribute(9)
• tdme_settxpower(9)
• mcps_data_request(9)
• mlme_reset_request_sync(9)
• mlme_set_request_sync(9)
• hwme_set_request_sync(9)
• hwme_get_request_sync(9)
• ca8210_async_xmit_complete(9)
• ca8210_skb_rx(9)
• ca8210_net_rx(9)
• ca8210_skb_tx(9)
• ca8210_start(9)
• ca8210_stop(9)
• ca8210_xmit_async(9)
• ca8210_get_ed(9)
• ca8210_set_channel(9)
• ca8210_set_hw_addr_filt(9)
• ca8210_set_tx_power(9)
• ca8210_set_cca_mode(9)
• ca8210_set_cca_ed_level(9)
• ca8210_set_csma_params(9)
• ca8210_set_frame_retries(9)
• ca8210_test_int_open(9)
• ca8210_test_check_upstream(9)
• ca8210_test_int_user_write(9)
• ca8210_test_int_user_read(9)
• ca8210_test_int_ioctl(9)
• ca8210_test_int_poll(9)
• ca8210_get_platform_data(9)
• ca8210_config_extern_clk(9)
• ca8210_register_ext_clock(9)
• ca8210_unregister_ext_clock(9)
• ca8210_reset_init(9)
• ca8210_interrupt_init(9)
• ca8210_dev_com_init(9)
• ca8210_dev_com_clear(9)
• ca8210_hw_setup(9)
• ca8210_test_interface_init(9)
• ca8210_test_interface_clear(9)
• ca8210_remove(9)
• ca8210_probe(9)

cute sign-off time 💅 source/version is ./drivers/net/ieee802154, date is October 2026, and the page id is ca8210_test_...driver_write(9). mwah 💖🎀