hwmp_route_info_get(9)

✨ NAME ✨

Okay so bestie, this is hwmp_route_info_get(9) from the Kernel API Manual — and it is literally here to update routing info to originator and transmitter 💅✨

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🌸 SYNOPSIS 🌸

       u32 hwmp_route_info_get (struct ieee80211_sub_if_data *sdata , struct
       ieee80211_mgmt *mgmt , const u8 *hwmp_ie , enum mpath_frame_type action
       );

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🫶 ARGUMENTS 🫶

• sdata — your local mesh subif, the main-character mesh interface doing the thing 🦋
• mgmt — the mesh management frame, aka the message that walked in with receipts
• hwmp_ie — the hwmp information element (PREP or PREQ), so yes, one of those two icons 👑
• action — the type of hwmp ie, aka what kind of HWMP moment we're in

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💖 DESCRIPTION 💖

This function updates the path routing information to the originator and the transmitter of a HWMP PREQ or PREP frame. No cap, that's the whole vibe: PREQ or PREP comes through, and this function handles the routing-info update for both the originator and the transmitter 🎀

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🎀 RETURN 🎀

It returns the metric to frame originator, or 0 if the frame should not be further processed. So if you get a 0, bestie, that frame is done — do not keep passing it around 😭

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🌈 NOTES 🌈

Lowkey important: this function is the only place (besides user-provided info) where path routing information is updated. That's the note. That's the whole note. Periodt 💀✨

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🦋 SEE ALSO 🦋

• Kernel file: ./net/mac80211/mesh_hwmp.c
• mesh_path_error_tx(9)
• mesh_queue_preq(9)
• mesh_path_start_discovery(9)
• mesh_nexthop_resolve(9)
• mesh_nexthop_lookup_nolearn(9)
• mesh_nexthop_lookup(9)

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Okay bye bestie 🫶 this page lives under ./net/mac80211, dated October 2026, and it's hwmp_route_info_get(9) — iconic, honestly 💜🎀