e1000_hash_mc_addr_vf(9)

✨ e1000_hash_mc_addr_vf ✨

okay so bestie, welcome to the kernel API manual corner of the group chat 💖 this one's a little function from the igbvf driver and it's honestly kind of iconic once you know what it's doing. let's get into it 🫶

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💅 NAME 💅

e1000_hash_mc_addr_vf — generate a multicast hash value ✨

like, that's the whole vibe. it makes a hash. for multicast. we love a clear job description 💀

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🌸 SYNOPSIS 🌸

u32 e1000_hash_mc_addr_vf (struct e1000_hw *hw , u8 *mc_addr );

so it takes two things and gives you back a u32. that's the tea ☕

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🎀 ARGUMENTS 🎀

• hw — pointer to the HW structure 💅 like, the hardware's whole little profile, passed in by reference
• mc_addr — pointer to a multicast address 🌸 this is the address we're hashing, bestie

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🦋 DESCRIPTION 🦋

okay so here's what's actually going down: it generates a multicast address hash value ✨ and that hash is what gets used to figure out two things:

• the multicast filter table array address 📍
• the new table value 📝

and if you wanna know more about the table side of things, go peek at e1000_mta_set_generic — that's where the plot continues, iykyk 👑

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💜 SEE ALSO 💜

• Kernel file ./drivers/net/ethernet/intel/igbvf/vf.c 📁 (yes, that's the source file, go read it, it's giving main character energy)
• e1000_init_mac_params_vf(9)
• e1000_init_function_pointers_vf(9)
• e1000_get_link_up_info_vf(9)
• e1000_reset_hw_vf(9)
• e1000_init_hw_vf(9)
• e1000_update_mc_addr_list_vf(9)
• e1000_set_vfta_vf(9)
• e1000_rlpml_set_vf(9)
• e1000_rar_set_vf(9)
• e1000_read_mac_addr_vf(9)
• e1000_set_uc_addr_vf(9)
• e1000_check_for_link_vf(9)

that's the whole friend group right there, no cap 🫶

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ngl bestie, always double-check the exact spelling when you're calling these — the _vf suffix is doing a lot of work and the kernel does not do typos 💀

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okay that's the page!! this one came from the kernel docs, source path ./drivers/net/ethernet/intel/i... (truncated in the footer, so cute of it), dated October 2026, and it's filed under e1000_hash_mc_addr_vf(9). slay, go hash something, periodt 💅✨🍓