__vlan_hwaccel_put_tag(9)

💅 __vlan_hwaccel_put_tag(9) — Kernel API Manual, bestie edition

okay so real talk, this is a page from the Kernel API Manual, and it's about __vlan_hwaccel_put_tag — which is hardware accelerated VLAN inserting ✨ like yes it's a mouthful but it is also iconic.

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✨ NAME ✨

__vlan_hwaccel_put_tag — hardware accelerated VLAN inserting 🎀

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🦋 SYNOPSIS 🦋

void __vlan_hwaccel_put_tag (struct sk_buff *skb , __be16 vlan_proto ,
       u16 vlan_tci );

she takes three things and returns nothing (a void, no cap) 💜

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🌸 ARGUMENTS 🌸

• skb — the skbuff to tag, aka the little packet main character we're about to decorate 🫶
• vlan_proto — VLAN encapsulation protocol, iykyk
• vlan_tci — VLAN TCI to insert, that's the one going in 💅

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💖 DESCRIPTION 💖

Puts the VLAN TCI in skb->vlan_tci and lets the device do the rest 😌✨

that's it, that's the whole vibe — you stash the tag, the hardware handles the heavy lifting, slay.

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🌈 SEE ALSO 🌈

Kernel file ./include/linux/if_vlan.h and honestly the whole friend group:

• struct vlan_ethhdr(9)
• struct vlan_pcpu_stats(9)
• struct vlan_priority_tci_mapping(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_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)

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ngl this page lives in ./include/linux, dated October 2026, and it's literally all under the __vlan_hwaccel_put_tag(9) banner 💀🏷️

okay bye bestie, go tag those packets 🧚‍♀️🌸💜