__vlan_hwaccel_get_tag(9)

💅 __vlan_hwaccel_get_tag — a Kernel API Manual moment 🎀

okay so bestie, welcome to the Kernel API Manual, and today's main character is __vlan_hwaccel_get_tag, a lil function whose whole personality is "get the VLAN ID that is in @skb->cb[]". yes that's it. that's the whole vibe. ✨

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🌸 NAME 🌸

__vlan_hwaccel_get_tag — literally just here to get the VLAN ID that is in @skb->cb[] 🫶

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✨ SYNOPSIS ✨

int __vlan_hwaccel_get_tag (const struct sk_buff *skb , u16 *vlan_tci );

like. look at her. she takes two things and returns an int. iconic behavior tbh 💅

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🦋 ARGUMENTS 🦋

• skb — the skbuff you're querying, bestie. she's the one being asked the question 👀
• vlan_tci — the buffer where you store the value. bring your own storage fr fr 🎀

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🔥 RETURN 🔥

returns an error if skb->vlan_tci is not set correctly 😭 like, if the tag isn't set right, that's an error, no cap. not me hoping your tag is set correctly tho 🙈

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🌈 SEE ALSO 🌈

all the siblings, cousins, and adjacent lore, all in the Kernel file ./include/linux/if_vlan.h 💖:

• 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_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 genuinely a whole friend group. go say hi to all of them 🧚‍♀️

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and that's the whole page bestie, no hidden lore, no extra options, nothing sneaky. the tag is either set correctly or it isn't, and she will tell you 💀

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okay bye ily, this page lives in ./include/linux, dated October 2026, and it's from the Kernel API Manual — mwah, slay, periodt 🌸💜⭐