rdma_query_gid_table(9)

✨ rdma_query_gid_table(9) ✨

okay so bestie, we're in the kernel API manual today — this one's from the rdma_query_gid_table(9) part of the book, and it's actually such a serve, let me tell you 🫶

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💜 NAME 💜

rdma_query_gid_table — reads GID table entries of all the ports of a device, up to max_entries. that's it, that's the vibe 💅

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🌸 SYNOPSIS 🌸

ssize_t rdma_query_gid_table (struct ib_device *device , struct ib_uverbs_gid_entry *entries , size_t max_entries );

like, yes, that whole line is the function. she's long, she's iconic, she ate 👑

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🦋 ARGUMENTS 🦋

• device — the device we're querying, bestie. that's the one we're pulling info out of 💖
• entries — the entries where the GID entries get returned. that's where the ✨results✨ land.
• max_entries — the maximum number of entries that can be returned. and listen, this part is not optional-optional: the entries array must be allocated to hold max_entries number of entries. no cap, allocate it properly or it's giving disaster 😭

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🌈 DESCRIPTION 🌈

Returns the number of entries on success, or the appropriate error code. literally that's the whole description, she's short and to the point and we respect her for it ✨

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🎀 SEE ALSO 🎀

• kernel file ./drivers/infiniband/core/cache.c — that's where the magic lives 🧚
• free_gid_work(9)
• del_gid(9)
• add_modify_gid(9)
• rdma_find_gid_by_port(9)
• rdma_find_gid_by_filter(9)
• rdma_query_gid(9)
• rdma_read_gid_hw_context(9)
• rdma_find_gid(9)
• rdma_get_gid_attr(9)
• rdma_put_gid_attr(9)
• rdma_hold_gid_attr(9)
• rdma_read_gid_attr_ndev_rcu(9)
• rdma_read_gid_l2_fields(9)
• ib_dispatch_event(9)

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💀 friendly reminder that the entries array has to fit max_entries entries — that's a hard requirement, not a suggestion, okay? go allocate properly and slay 🫶

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and that's the page!! 🌟 this one ships out of ./drivers/infiniband/core and it's dated October 2026 — mwah 💋 thanks for reading bestie, ily, go query those GID tables 💜🎀🦋