STRUCT VPORT(9)

🌸 NAME 🌸

struct vport — literally one port inside a datapath, that's the whole vibe 💅

(this is a page from the struct vport(9) manual, bestie, section 9, Kernel API Manual energy ✨)

✨ SYNOPSIS ✨

ok so here's the whole struct, no cap, copy it exactly:

struct vport {
    struct net_device *dev;
    netdevice_tracker dev_tracker;
    struct datapath *dp;
    struct vport_portids *upcall_portids;
    u16 port_no;
    struct hlist_node hash_node;
    struct hlist_node dp_hash_node;
    const struct vport_ops *ops;
    struct vport_upcall_stats_percpu __percpu *upcall_stats;
    struct list_head detach_list;
    struct rcu_head rcu;
 };

💅 MEMBERS 💅

bestie, let's go through every single field one by one, because they ALL matter 🫶

• dev — a pointer to a net_device. yeah. that's it. iconic.
• dev_tracker — a netdevice_tracker — it's the refcount tracker for the dev reference, so we know who's holding on to it 👀
• dp — the datapath that this port belongs to. its home. its main character datapath 🏠
• upcall_portids — an RCU protected struct vport_portids ⭐ (RCU protected, remember that, it's important)
• port_no — the index into dp's ports array. a u16, tiny but mighty 🎀
• hash_node — this is the element in the dev_table hash table in vport.c 💖
• dp_hash_node — and THIS one is the element in datapath->ports hash table in datapath.c. two hash nodes, two files, iykyk 🌈
• ops — the class structure. slay.
• upcall_stats — upcall stats of every ports 🔥 (yes, "every ports", that's the original wording, we don't gatekeep)
• detach_list — the list used for detaching vport in the net-exit call. bye bestie 👋
• rcu — RCU callback head for deferred destruction. it's giving cleanup era 💀

🔥 SEE ALSO 🔥

go read these too, they're all in the family:

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

ok that's the whole page, mwah 💋 this one comes from ./net/openvswitch and it's dated October 2026 — so future-y, so cunty, so struct vport(9) ⭐🦋✨