service_range_match_first(9)

💅 service_range_match_first(9) — from the Kernel API Manual, bestie 💅

okay so picture this: you're deep in the rbtree and you just need one node, the very first one, that overlaps the range you care about. that's literally this function. it's giving "needle in a haystack but the haystack is sorted" energy 🧚✨

✨ NAME ✨

service_range_match_first — find the first service range matching a range 🎀

like, the first one. the leftmost one. the main character of matches, if you will 👑

🌸 SYNOPSIS 🌸

struct service_range * service_range_match_first (struct rb_node *n ,
u32 start , u32 end );

no cap, that's the whole signature. struct rb_node *n, u32 start, u32 end — all three, in that order, periodt 💅

🦋 ARGUMENTS 🦋

• n — the root node of the service range rbtree for searching. this is where the search starts, so hand it the root and let it cook 🔥
• start — beginning of the search range (end >= start) for matching. yes, the end >= start thing is a real constraint, don't come for me 🙈
• end — end of the search range (end >= start) for matching. same deal, end >= start, always 💖

lowkey important: both start and end list the condition (end >= start) — so like, don't flip them around, bestie 😭

⭐ RETURN ⭐

the leftmost service range node in the rbtree that overlaps the specific range, if any. otherwise? it returns NULL. that's it, that's the whole vibe check 🫶

so: got a match → you get the leftmost overlapping node. no match → NULL. no in-between, no drama 💀

🌈 SEE ALSO 🌈

• Kernel file ./net/tipc/name_table.c
• struct service_range(9)
• struct tipc_service(9)
• service_range_foreach_match(9)
• service_range_match_next(9)
• tipc_publ_create(9)
• tipc_service_create(9)
• tipc_service_remove_publ(9)
• tipc_service_subscribe(9)
• tipc_nametbl_lookup_anycast(9)
• tipc_nametbl_withdraw(9)
• tipc_nametbl_subscribe(9)
• tipc_nametbl_unsubscribe(9)
• tipc_service_delete(9)

like half the TIPC name table is in here, iykyk 📚✨ go read the whole friend group, they all slay in their own way 💜

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ok that's the page!! this one's living in ./net/tipc and the date on it is October 2026 — so yeah, future-dated and iconic for it 🎀 mark your calendars bestie, mwah 💋💖

service_range_match_first(9) — ate and left no crumbs 👑🔥