fm10k_sm_mbx_create_reply(9)

💅 fm10k_sm_mbx_create_reply — Kernel API Manual ✨

okay bestie, welcome to the group chat. this page lives in the Kernel API Manual, and it's all about one tiny little function that does a very specific job: fm10k_sm_mbx_create_reply. she generates a reply based on state and remote head. that's the whole vibe. let's get into it 🫶

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✨ NAME ✨

fm10k_sm_mbx_create_reply — generate a reply based on state and remote head. no cap, that's literally her whole job description 💖

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🌸 SYNOPSIS 🌸

void fm10k_sm_mbx_create_reply (struct fm10k_hw *hw , struct
fm10k_mbx_info *mbx , u16 head );

three arguments, returns nothing (void), and honestly she keeps it cute and simple. slay.

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🎀 ARGUMENTS 🎀

• hw — pointer to the hardware structure. that's the hardware bestie, the whole reason any of this works 💻
• mbx — pointer to the mailbox. the literal mailbox. she's the main character here 📬
• head — the acknowledgement number. this is the remote FIFO head we're reacting to 👑

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🦋 DESCRIPTION 🦋

okay so here's the tea ☕ this function will generate an outgoing message based on the current mailbox state and the remote FIFO head. like, it looks at where things are at and pops out a little reply message accordingly.

and the return situation? bestie, listen closely:

• on success it returns the length of the outgoing message, excluding the header ✨
• on error it returns a negative value 😭

so like, positive-ish length = we ate. negative = it's giving error, go check on her. fr fr keep that distinction in your head, iykyk 💀

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🔥 SEE ALSO 🔥

the family tree is huge, bestie, so buckle up — these are all the siblings, cousins, and distant relatives in the kernel file ./drivers/net/ethernet/intel/fm10k/fm10k_mbx.c 👑

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_rx_ready(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_process_reset(9), fm10k_sm_mbx_process_version_1(9), fm10k_sm_mbx_process(9), fm10k_sm_mbx_init(9)

like i said. HUGE. but every single one of them is right there in ./drivers/net/ethernet/intel/fm10k/fm10k_mbx.c if you wanna go snooping 🧚

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one tiny PSA bestie: this page is straight from the Kernel API Manual, source path got cut off at ./drivers/net/ethernet/intel/f..., and the date on it is October 2026. iconic behavior, honestly 🎀

that's the whole page, you understood it perfectly, i'm so proud of you. periodt. 💜🌈⭐