mesh_nexthop_lookup(9)

✨ mesh_nexthop_lookup(9) ✨

okay so this is the Kernel API Manual page for mesh_nexthop_lookup, and bestie, it's literally the function that picks which next hop your mesh frame is gonna vibe with 💅

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🎀 NAME 🎀

mesh_nexthop_lookup — put the appropriate next hop on a mesh frame. Calling this function is considered "using" the associated mpath, so preempt a path refresh if this mpath expires soon.

like, no cap: you're not just looking at the mpath, you're committing to it, so the path refresh just got preempted if that mpath's about to expire. main character energy fr fr 👑

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🦋 SYNOPSIS 🦋

int mesh_nexthop_lookup (struct ieee80211_sub_if_data *sdata , struct
sk_buff *skb );

she takes two args and hands you back an int, periodt ✨

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🌸 ARGUMENTS 🌸

• sdata — network subif the frame will be sent through 🫶 like, the interface this whole thing is riding out on
• skb — 802.11 frame to be sent 💌 the actual frame getting yeeted

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💖 RETURN 💖

• 0 if the next hop was found 🥳 slay, we're so back
• Nonzero otherwise 😭 which like, we don't love, but that's the vibe check

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🌈 SEE ALSO 🌈

Kernel file ./net/mac80211/mesh_hwmp.c — and while you're in there, go be obsessed with these too:

• mesh_path_error_tx(9)
• hwmp_route_info_get(9)
• mesh_queue_preq(9)
• mesh_path_start_discovery(9)
• mesh_nexthop_resolve(9)
• mesh_nexthop_lookup_nolearn(9)

iykyk 🔥

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ngl bestie, this whole thing lives in ./net/mac80211 — that's the home base 🏠

and that's the page!! mwah 💋 this lil guy is from October 2026, sourced straight out of ./net/mac80211 — drink water, read your mesh code, and go find that next hop, queen 👑💜