validate_vlan(9)

💖 validate_vlan(9) — the Kernel API Manual glow-up 🦋

okay bestie, welcome to the <pink>validate_vlan</pink> page from the Kernel API Manual, section 9. yes we're in kernel-land. yes it's giving driver internals. no you're not scared, you're gonna slay ✨

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🌸 NAME 🌸

validate_vlan — literally just checks if the ice_vlan you passed in is valid. that's it. that's the whole job. icon behaviour honestly 👑

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✨ SYNOPSIS ✨

bool validate_vlan (struct ice_vsi *vsi , struct ice_vlan *vlan );

she returns a bool. short. sweet. decisive. we love a function that knows what she is 💅

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🎀 ARGUMENTS 🎀

• vsi — the VSI that gets used for printing the error message 👀 so like, if something's off, this is who's gonna be talking about it.
• vlan — the ice_vlan structure that's getting validated. the main character of this whole operation fr fr.

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💜 DESCRIPTION 💜

so here's the vibe check 🧚 this returns true if the VLAN TPID is valid — full stop, that's a pass.

it also returns true if the VLAN TPID is 0 and the VLAN VID is 0. and why do we care, you ask? because that combo lowkey unlocks two things:

• non-zero VLAN filters with the specified VLAN TPID can be added to the prune list
• untagged VLAN 0 filters can be added to the prune list

respectively, bestie. respectively. 😌 the way that one little true does so much heavy lifting... we're obsessed.

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🦋 SEE ALSO 🦋

the kernel file lives right here, no cap:

./drivers/net/ethernet/intel/ice/ice_vsi_vlan_lib.c

and the whole friend group 💖:

• ice_vsi_add_vlan(9)
• ice_vsi_del_vlan(9)
• ice_vsi_manage_vlan_insertion(9)
• ice_vsi_manage_vlan_stripping(9)
• __ice_vsi_set_inner_port_vlan(9)
• ice_cfg_vlan_pruning(9)
• tpid_to_vsi_outer_vlan_type(9)
• ice_vsi_ena_outer_stripping(9)
• ice_vsi_dis_outer_stripping(9)
• ice_vsi_ena_outer_insertion(9)
• ice_vsi_dis_outer_insertion(9)
• __ice_vsi_set_outer_port_vlan(9)
• ice_vsi_set_outer_port_vlan(9)
• ice_vsi_clear_outer_port_vlan(9)

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ngl if you're reading this at 3am in ./drivers/net/ethernet/intel/ice, drink some water, bestie. the VLANs will still be there tomorrow 🫶

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🌈 sign-off time, and it's a whole moment 🌈 — this page ships from ./drivers/net/ethernet/intel/ice, dated October 2026, and it's ✨validate_vlan(9)✨ forever and ever, periodt 💅💖🎀