__rvu_npc_ex...s_cnt_update(9)

📦 version 7.3.1, in nixpkgs unstable

💅 __rvu_npc_exact_cmd_rules_cnt_update — yasss bestie, welcome to the kernel API manual ✨

okay so quick vibe check: this whole page lives in the Kernel API Manual, and the star of the show is __rvu_npc_exact_cmd_rules_cnt_update(9). she keeps track of how many dmac rules are stacked against a drop rule. lowkey iconic bookkeeping. 🎀

✨ NAME ✨

__rvu_npc_exact_cmd_rules_cnt_update — she updates the number of dmac rules that are hanging around against a drop rule. periodt. 💖

🦋 SYNOPSIS 🦋

u16 __rvu_npc_exact_cmd_rules_cnt_update (struct rvu *rvu , int
drop_mcam_idx , int val , bool *enable_or_disable_cam );

like, she takes four things and hands you back a u16. no cap.

🌸 ARGUMENTS 🌸

  • rvu — the resource virtualization unit. that's the whole context she's working in, bestie. 🫶
  • drop_mcam_idx — the NPC mcam drop rule index. yep, that's the one.
  • val — literally just +1 or -1. that's it. that's the whole vibe. adding or removing. 🙈
  • enable_or_disable_cam — if there are no exact match rules against a drop rule, this is what gets disabled. so she flips this little flag for you. 💅

🔥 DESCRIPTION 🔥

okay so here's the tea, fr fr:

  • when the first exact match entry against a drop rule is added, enable_or_disable_cam is set to true. 🎀
  • when the last exact match entry against a drop rule is deleted, enable_or_disable_cam is set to true. 💖

that's the whole thing. first in, last out, and the flag goes true either way. iykyk. ✨

⭐ RETURN ⭐

the number of rules. that's the u16 she's handing back to you. slay. 👑

🌈 SEE ALSO 🌈

the kernel file itself lives at ./drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c — go say hi 💜

and here's the whole friend group, like a full-on group chat of related functions:

ok that's every single one of them, don't come for me, i listed them all 💀

and that's a wrap, bestie 🧚 this page was brought to you by the source path ./drivers/net/ethernet/marvell..., dated October 2026, and it's all about __rvu_npc_ex...s_cnt_update(9). go forth and count your rules 💖✨🎀🦋

📦 where this page comes from