STRUCT DP_NLSK_PIDS(9)

🦋 struct dp_nlsk_pids(9) 🦋

okay so bestie, welcome to the Kernel API Manual ✨ — today we're looking at struct dp_nlsk_pids, and honestly? she's a little baddie with one specific job 💅

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🌸 NAME 🌸

struct dp_nlsk_pids — an array of netlink portids for a datapath 🔥

it's the girl who shows up when OVS_DP_F_DISPATCH_UPCALL_PER_CPU is enabled, and ngl she must be protected by rcu — no cap, that's non-negotiable 🫶

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💖 SYNOPSIS 💖

struct dp_nlsk_pids {
    struct rcu_head rcu;
    u32 n_pids;
    u32 pids[];
};

look at her. three little members. iconic 💀✨

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🎀 Members 🎀

• rcu — the RCU callback head for deferred destruction 🧚 she's the cleanup crew, lowkey just waiting her turn.
• n_pids — size of the pids array 📏 literally just the headcount, bestie.
• pids — the array storing the Netlink socket PIDs, indexed by CPU ID, for packets that miss the flow table 👑 so when a packet doesn't match anything, this is who gets pinged. per-CPU dispatch energy fr fr 💅

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⭐ SEE ALSO ⭐

• the Kernel file ./net/openvswitch/datapath.h
• struct dp_stats_percpu(9)
• struct datapath(9)
• struct ovs_skb_cb(9)
• struct dp_upcall_info(9)
• struct ovs_net(9)
• enum ovs_pkt_hash_types(9)

go read them!! they're all in the same friend group, iykyk 🌈

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ngl bestie, remember: rcu protection is the whole vibe check here. skip it and things get real cursed real fast 😭💀

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and that's a wrap on this one, cutie 🍓 this page lives in ./net/openvswitch and it was dated October 2026 — mwah, slay, periodt 💜🦋✨