fm10k_mbx_rx_ready(9)

💌 fm10k_mbx_rx_ready(9) — the kernel API manual, but make it cute

okay bestie, so this is a page from the kernel API manual (it's fm10k_mbx_rx_ready(9), section 9, the whole thing lives in the kernel docs, not the normal user command manuals, iykyk). it's short, it's sweet, and it's honestly kind of a vibe check for your Rx FIFO.

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✨ NAME ✨

fm10k_mbx_rx_ready — the little function that tells you a message is ready in the Rx FIFO 💅

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🌸 SYNOPSIS 🌸

bool fm10k_mbx_rx_ready (struct fm10k_mbx_info *mbx );

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🎀 ARGUMENTS 🎀

• mbx — pointer to the mailbox. that's it. that's the whole argument. she's low-maintenance like that 🫶

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🦋 DESCRIPTION 🦋

okay so this one is literally so simple: the function returns true if there's a message sitting in the Rx FIFO waiting to be dequeued. no message? then it's not true, bestie. that's the whole tea ☕

it's giving "are we there yet" but for mailbox messages — one glance, one bool, no cap.

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🔥 SEE ALSO 🔥

first up, the kernel file herself: ./drivers/net/ethernet/intel/fm10k/fm10k_mbx.c — the main character 👑

and then the whole extended friend group, fr fr:

fm10k_fifo_init(9), fm10k_fifo_used(9), fm10k_fifo_unused(9), fm10k_fifo_empty(9), fm10k_fifo_head_offset(9), fm10k_fifo_tail_offset(9), fm10k_fifo_head_len(9), fm10k_fifo_head_drop(9), fm10k_fifo_drop_all(9), fm10k_mbx_index_len(9), fm10k_mbx_tail_add(9), fm10k_mbx_tail_sub(9), fm10k_mbx_head_add(9), fm10k_mbx_head_sub(9), fm10k_mbx_pushed_tail_len(9), fm10k_fifo_write_copy(9), fm10k_fifo_enqueue(9), fm10k_mbx_validate_msg_size(9), fm10k_mbx_write_copy(9), fm10k_mbx_pull_head(9), fm10k_mbx_read_copy(9), fm10k_mbx_push_tail(9), fm10k_crc_16b(9), fm10k_fifo_crc(9), fm10k_mbx_update_local_crc(9), fm10k_mbx_verify_remote_crc(9), fm10k_mbx_tx_ready(9), fm10k_mbx_tx_complete(9), fm10k_mbx_dequeue_rx(9), fm10k_mbx_enqueue_tx(9), fm10k_mbx_read(9), fm10k_mbx_write(9), fm10k_mbx_create_connect_hdr(9), fm10k_mbx_create_data_hdr(9), fm10k_mbx_create_disconnect_hdr(9), fm10k_mbx_create_fake_disconnect_hdr(9), fm10k_mbx_create_error_msg(9), fm10k_mbx_validate_msg_hdr(9), fm10k_mbx_create_reply(9), fm10k_mbx_reset_work(9), fm10k_mbx_update_max_size(9), fm10k_mbx_connect_reset(9), fm10k_mbx_process_connect(9), fm10k_mbx_process_data(9), fm10k_mbx_process_disconnect(9), fm10k_mbx_process_error(9), fm10k_mbx_process(9), fm10k_mbx_disconnect(9), fm10k_mbx_connect(9), fm10k_mbx_validate_handlers(9), fm10k_mbx_register_handlers(9), fm10k_pfvf_mbx_init(9), fm10k_sm_mbx_create_data_hdr(9), fm10k_sm_mbx_create_connect_hdr(9), fm10k_sm_mbx_connect_reset(9), fm10k_sm_mbx_connect(9), fm10k_sm_mbx_disconnect(9), fm10k_sm_mbx_validate_fifo_hdr(9), fm10k_sm_mbx_process_error(9), fm10k_sm_mbx_create_error_msg(9), fm10k_sm_mbx_receive(9), fm10k_sm_mbx_transmit(9), fm10k_sm_mbx_create_reply(9), fm10k_sm_mbx_process_reset(9), fm10k_sm_mbx_process_version_1(9), fm10k_sm_mbx_process(9), fm10k_sm_mbx_init(9)

like. that's the entire group chat and every single one of them ate 💀✨

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and that's the page!! before you go — the footer says the source path is ./drivers/net/ethernet/intel/f... (yeah it's truncated in the original, don't come for me 🙈) and it's dated October 2026, so mark your calendars bestie 🗓️💖 love u, go check that FIFO 💅🌟