rvu_exact_calculate_hash(9)

📦 version 7.3.1, in nixpkgs unstable

💅 rvu_exact_calculate_hash — a Kernel API Manual moment ✨

okay so bestie, gather round, because today we're looking at rvu_exact_calculate_hash(9), and it's literally the little function that does the math so the mem table knows where to put stuff. That's it. That's the whole vibe. 🎀

🌸 NAME 🌸

rvu_exact_calculate_hash — calculate hash index to mem table. lowkey the whole personality right there.

✨ SYNOPSIS ✨

here's the signature, copied exactly, don't @ me:

u32 rvu_exact_calculate_hash (struct rvu *rvu , u16 chan , u16 ctype ,
u8 *mac , u64 mask , u32 table_depth );

she takes six things and gives you back a u32, periodt. 💅

🫶 ARGUMENTS 🫶

every single one, no skips:

  • rvu — resource virtualization unit. the main character struct fr.
  • chan — Channel number. yep, the channel. the number of it.
  • ctype — Channel type. what kind of channel, bestie.
  • mac — MAC address. iconic, we love her.
  • mask — HASH mask. this is the mask, for the hash. 🌈
  • table_depth — Depth of table. how deep the table goes. like, emotionally. 💀

⭐ RETURN ⭐

Hash value. that's the answer, that's the whole gift, go off king 👑

🦋 SEE ALSO 🦋

the kernel file lives right here:

./drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c

and here's the entire friend group, all of them, in order, don't lose a single one 🙈:

rvu_exact_prepare_mdata(9), rvu_npc_exact_alloc_mem_table_entry(9), rvu_npc_exact_free_id(9), rvu_npc_exact_alloc_id(9), rvu_npc_exact_alloc_cam_table_entry(9), rvu_exact_prepare_table_entry(9), rvu_exact_config_secret_key(9), rvu_exact_config_search_key(9), rvu_exact_config_result_ctrl(9), rvu_exact_config_table_mask(9), rvu_npc_exact_get_max_entries(9), rvu_npc_exact_has_match_table(9), __rvu_npc_exact_find_entry_by_seq_id(9), rvu_npc_exact_add_to_list(9), rvu_npc_exact_mem_table_write(9), rvu_npc_exact_cam_table_write(9), rvu_npc_exact_dealloc_table_entry(9), rvu_npc_exact_alloc_table_entry(9), rvu_npc_exact_save_drop_rule_chan_and_mask(9), rvu_npc_exact_calc_drop_rule_chan_and_mask(9), rvu_npc_exact_drop_rule_to_pcifunc(9), rvu_npc_exact_get_drop_rule_info(9), __rvu_npc_exact_cmd_rules_cnt_update(9), rvu_npc_exact_del_table_entry_by_id(9), rvu_npc_exact_add_table_entry(9), rvu_npc_exact_update_table_entry(9), rvu_npc_exact_promisc_disable(9), rvu_npc_exact_promisc_enable(9), rvu_npc_exact_mac_addr_reset(9), rvu_npc_exact_mac_addr_update(9), rvu_npc_exact_mac_addr_add(9), rvu_npc_exact_mac_addr_del(9), rvu_npc_exact_mac_addr_set(9), rvu_npc_exact_can_disable_feature(9), rvu_npc_exact_disable_feature(9), rvu_npc_exact_reset(9), rvu_npc_exact_init(9)

like, that's the whole group chat and every single one of them is invited 🧚💜

ngl bestie, if you got here looking for drama, there is none — she's a hash calculator, she minds her business, she slays responsibly. 💖

and that's the page!! sourced from ./drivers/net/ethernet/marvell..., dated October 2026 — huge shoutout to the manual, mwah, kissing it on the forehead, bye bestie 🫶🎀✨

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