STRUCT VPORT_PORTIDS(9)

💖 struct vport_portids(9) 💖

okay so bestie, welcome to the kernel API manual, this one's a struct page and it's lowkey iconic — it lives in the OVS corner of the kernel and it's all about keeping track of netlink portids for a vport 🎀

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✨ NAME ✨

struct vport_portids — an array of netlink portids of a vport. and like, must be protected by rcu. that's not a suggestion, that's the whole vibe check, fr fr 💅

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🦋 SYNOPSIS 🦋

struct vport_portids {
    struct reciprocal_value rn_ids;
    struct rcu_head rcu;
    u32 n_ids;
    u32 ids[];
};

look at her. flexible array member and everything. main character energy 👑

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🌸 Members 🌸

• rn_ids — the reciprocal value of n_ids. it's giving "precomputed math so we don't have to divide" honestly 🧚
• rcu — the RCU callback head for deferred destruction. so when she's gotta go, she goes gracefully after a grace period 💀
• n_ids — size of the ids array. bestie, it's literally the count 📏
• ids — the array storing the Netlink socket pids that get used for packets received on this port when they miss the flow table. yeah, the fallback squad 🙈

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⭐ SEE ALSO ⭐

• kernel file ./net/openvswitch/vport.h
• struct vport(9)
• struct vport_parms(9)
• struct vport_ops(9)
• struct vport_upcall_stats_percpu(9)
• vport_priv(9)
• vport_from_priv(9)

go read the whole family, they're all slaying in their own way 🫶

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ngl this page is short but she's important — and remember: protected by rcu. no cap. 😭

okay bye bestie!! this was the kernel API manual, struct vport_portids(9), coming at you from ./net/openvswitch and dated October 2026 — mwah, stan the kernel, drink water, and always hold your RCU read lock 💜✨🎀