vlan_get_pr...ffset_inline(9)

💖 NAME 💖

vlan_get_protocol_offset_inline — bestie, this one just grabs the protocol EtherType for you ✨

okay so real quick, this page lives in the Kernel API Manual (yes, that one 👑), and it's all about one little inline helper that peeks at a packet and tells you what its EtherType is. that's the whole vibe. no cap. 🦋

---

✨ SYNOPSIS ✨

__be16 vlan_get_protocol_offset_inline (const struct sk_buff *skb ,
__be16 type , int mac_offset , int *depth );

like, look at her. four args, one __be16 out the door. iconic behavior honestly 💅

---

🎀 ARGUMENTS 🎀

• skb — the skbuff you're interrogating 🔍 this is the packet bestie, the main character, the one we're querying.
• type — the first vlan protocol. yes, the first one, she's the opener 🫶
• mac_offset — the MAC offset. that's it, that's the whole thing 🌸
• depth — a buffer where we stash the length of the eth and vlan tags, in bytes 📏 (so you know how deep the tag situation goes, iykyk)

---

🔥 RETURN 🔥

she returns the EtherType of the packet 💖 and here's the gorgeous part: it does NOT matter whether the packet is vlan encapsulated (normal encapsulation or hardware accelerated) or not vlan encapsulated at all. same result. no exceptions. periodt. 🌈

---

🦋 SEE ALSO 🦋

so you wanna go down the rabbit hole? buckle up bestie, this is the whole friend group 😭

Kernel file ./include/linux/if_vlan.h plus 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_hwaccel_put_tag(9), __vlan_get_tag(9), __vlan_hwaccel_get_tag(9), vlan_get_tag(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. that's a lot of siblings. but they're all slaying in their own lanes 💀

---

mwah 💜 that's the page! brought to you straight out of ./include/linux in the Kernel API Manual, dated October 2026 — and yeah, the footer still says vlan_get_pr...ffset_inline(9) because the name got truncated and honestly? she's mysterious. she's elusive. we respect it. 🧚‍♀️⭐