i40e_write_byte(9)

✨ i40e_write_byte(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 this one's a lil function that swaps out a single byte in your HMC context, and honestly? it's giving surgical precision 🎀

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🌸 NAME 🌸

i40e_write_byte — replace HMC context byte 💅

like, literally one byte. that's the whole gig. iconic behavior tbh.

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🦋 SYNOPSIS 🦋

void i40e_write_byte (u8 *hmc_bits , struct i40e_context_ele *ce_info ,
u8 *src );

no cap, that's the whole signature — void return, three args, no drama ✨

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💜 ARGUMENTS 💜

• hmc_bits — pointer to the HMC memory 🧠✨ this is the destination vibe, the place the byte is gonna live
• ce_info — a description of the struct to be read from 📋 lowkey the instruction manual for what we're copying
• src — the struct to be read from 🍓 the source of truth, the origin story, the main character

fr fr, just remember: hmc_bits is where it goes, ce_info is how to read it, and src is what we're reading. iykyk 💅

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🌈 SEE ALSO 🌈

the whole friend group 🫶 — go check these out:

Kernel file ./drivers/net/ethernet/intel/i40e/i40e_lan_hmc.c 👑

• i40e_align_l2obj_base(9)
• i40e_calculate_l2fpm_size(9)
• i40e_init_lan_hmc(9)
• i40e_remove_pd_page(9)
• i40e_remove_sd_bp(9)
• i40e_create_lan_hmc_object(9)
• i40e_configure_lan_hmc(9)
• i40e_delete_lan_hmc_object(9)
• i40e_shutdown_lan_hmc(9)
• i40e_write_word(9)
• i40e_write_dword(9)
• i40e_write_qword(9)
• i40e_clear_hmc_context(9)
• i40e_set_hmc_context(9)
• i40e_hmc_get_object_va(9)
• i40e_clear_lan_tx_queue_context(9)
• i40e_set_lan_tx_queue_context(9)
• i40e_clear_lan_rx_queue_context(9)
• i40e_set_lan_rx_queue_context(9)

you got the byte version, now go meet the word, dword, and qword versions — they're the bigger siblings and they ate 🔥

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and that's a wrap, bestie 🎀 this lil page came straight outta ./drivers/net/ethernet/intel/i40e, dated October 2026 — stan the kernel docs, they're the blueprint 💖✨🦋💅