STRUCT VLAN_PRIORITY_TCI_MAPPING(9)

💅 struct vlan_priority_tci_mapping (9) — Kernel API Manual

okay bestie, so we're in the Kernel API Manual today and the star of the show is struct vlan_priority_tci_mapping 💖 like yes she's a struct, yes she's iconic, and yes she's about to make vlan egress priority mappings make sense to you. no cap.

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✨ NAME ✨

struct vlan_priority_tci_mapping — vlan egress priority mappings 🦋

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🎀 SYNOPSIS 🎀

struct vlan_priority_tci_mapping {
    u32 priority;
    u16 vlan_qos;
    struct vlan_priority_tci_mapping *next;
    struct rcu_head                 rcu;
 };

she's little, she's curated, she's giving main character energy in <linux/if_vlan.h> 🌸

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👑 Members 👑

• priority — the skb priority, periodt. this is the value you're matching against 💫
• vlan_qos — the vlan priority, and the exact formula is literally this: (skb->priority << 13) & 0xE000. write it down bestie, it's giving math class but make it networking 🔥
• next — pointer to next struct. it's a linked list moment, iykyk 🔗
• rcu — used for deferred freeing of mapping nodes. so when these nodes gotta go, RCU handles the goodbye, no dramatic exits needed 🙈

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🌈 SEE ALSO 🌈

Kernel file ./include/linux/if_vlan.h — go read her, she ate 🍓

• struct vlan_ethhdr(9)
• struct vlan_pcpu_stats(9)
• struct vlan_dev_priv(9)
• eth_type_vlan(9)
• __vlan_insert_inner_tag(9)
• __vlan_insert_tag(9)
• vlan_insert_inner_tag(9)
• vlan_insert_tag(9)
• vlan_insert_tag_set_proto(9)
• __vlan_hwaccel_clear_tag(9)
• __vlan_hwaccel_copy_tag(9)
• __vlan_hwaccel_put_tag(9)
• __vlan_get_tag(9)
• __vlan_hwaccel_get_tag(9)
• vlan_get_tag(9)
• vlan_get_protocol_offset_inline(9)
• vlan_get_protocol(9)
• vlan_remove_tag(9)
• skb_vlan_tagged(9)
• skb_vlan_tagged_multi(9)
• vlan_features_check(9)
• compare_vlan_header(9)

like, the whole vlan friend group showed up 💜🫶

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ngl, this page comes straight out of ./include/linux and it's dated October 2026, filed under struct vlan_..._tci_mapping(9). that's the vibe check, bestie — now go forth and map those priorities ✨💅