br_multicas...ier_adjacent(9)

✨ br_multicast_has_querier_adjacent(9) ✨

okay bestie, welcome to the Kernel API Manual, section 9 — the bit where we talk about kernel internals 💅 this one lives in the bridge/multicast girlie universe and honestly? it's giving detective energy 🔍

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🎀 NAME 🎀

br_multicast_has_querier_adjacent — checks for a querier behind a bridge port 🫶

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🦋 SYNOPSIS 🦋

bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);

like, that's the whole vibe. bool in, vibes out ✨

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🌸 ARGUMENTS 🌸

• dev — the bridge port adjacent to which we're checking for a querier 👀 literally the port we're snooping next to
• proto — the protocol family to check for, and there are exactly two moods here: IGMP -> ETH_P_IP, and MLD -> ETH_P_IPV6 🧚

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💜 DESCRIPTION 💜

So here's the tea ☕: it checks whether the given interface has a bridge on top — and if it does, it returns true if a selected querier is behind one of the other ports of this bridge. Otherwise? It returns false. No cap, that's it. 🙈

the way that it's basically asking "is there a querier lurking behind one of my sibling ports" and answering with a single bool 😭 iconic behavior honestly 👑

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🔥 SEE ALSO 🔥

• Kernel file ./net/bridge/br_multicast.c 📁 (the source of truth, go read her)
• br_multicast_list_adjacent(9)
• br_multicast_has_querier_anywhere(9)
• br_multicast_has_router_adjacent(9)

all the adjacent besties, fr fr 🫶✨

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ngl this page is short but she ate 💅 everything you need, nothing you don't. no cap.

and that's a wrap, my love 🌈 this one's from ./net/bridge, dated October 2026, in the Kernel API Manual section 9 — br_multicas...ier_adjacent(9), mwah 💖🎀🦋