l3mdev_master_ifindex_rcu(9)

✨ l3mdev_master_ifindex_rcu ✨

okay so bestie, welcome to a page from the Kernel API Manual 💅 — yes, that manual, the one your kernel-dev crush keeps tabbing through at 2am. this one's a little function named l3mdev_master_ifindex_rcu and honestly? it does exactly what it says on the tin 🎀

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🌸 NAME 🌸

l3mdev_master_ifindex_rcu — get the index of the L3 master device 👑

like, it literally goes and fetches you the index. that's the whole vibe.

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🦋 SYNOPSIS 🦋

int l3mdev_master_ifindex_rcu (const struct net_device *dev );

return type is int, argument is a const struct net_device * named dev, and that's it. short and iconic, no notes 💖

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🎀 ARGUMENTS 🎀

• dev — the targeted interface 🎯 like, the net device you're pointing at and asking "hey bestie, what's your L3 master's index?"

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👑 SEE ALSO 👑

• Kernel file ./net/l3mdev/l3mdev.c 📁 — the source file where this lives, go read it, it's giving main character energy
• l3mdev_master_upper_ifindex_by_index_rcu(9) 🔥
• l3mdev_fib_table_rcu(9) 🌈
• l3mdev_link_scope_lookup(9) ⭐
• l3mdev_fib_rule_match(9) 💜

the whole l3mdev friend group, fr fr — they all hang out together, go say hi 🫶

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💀 quick reminder bestie: the _rcu in the name is not a cute decoration, it's a whole promise about how you're calling it. don't do anything goofy with it, iykyk 🙈

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and that's the page!! shipped straight out of ./net/l3mdev 📁, dated October 2026 🗓️✨ — mwah, catch you in the next manpage, bestie 😭💅🌸