rdma_destroy_ah_attr(9)

💅 rdma_destroy_ah_attr — the kernel API manual, bestie edition

okay so real talk, this is a page from the Kernel API Manual, section 9, and it's about rdma_destroy_ah_attr. it's short. it's sweet. it's iconic. let's get into it 🎀

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✨ NAME ✨

rdma_destroy_ah_attr — release the reference to the SGID attribute of an ah attribute. that's it. that's the whole job. she's a one-task queen 👑

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🦋 SYNOPSIS 🦋

void rdma_destroy_ah_attr (struct rdma_ah_attr *ah_attr );

like, look at her. no return value. void. she takes what she takes and gives nothing back (except, y'know, correctness) 💅

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🌸 ARGUMENTS 🌸

• ah_attr — pointer to the ah attribute. literally just a pointer to your ah attribute struct. that's the only thing she needs from you 🫶

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💖 DESCRIPTION 💖

so here's the vibe: this function releases the reference to the SGID attribute of the ah attribute if it is non NULL. key word: if. she's polite, she checks first.

and the best part?? it is safe to call this multiple times, and it is safe to call it on a zero initialized ah_attr. no cap. so like, double-calling her is not going to be a whole situation — she's chill like that 😌✨

ngl that's genuinely the whole description. she's a small function with a big heart and zero drama.

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🔥 SEE ALSO 🔥

the whole friend group, fr fr — from Kernel file ./drivers/infiniband/core/verbs.c:

• __ib_alloc_pd(9)
• ib_dealloc_pd_user(9)
• rdma_copy_ah_attr(9)
• rdma_replace_ah_attr(9)
• rdma_move_ah_attr(9)
• rdma_create_ah(9)
• rdma_create_user_ah(9)
• rdma_move_grh_sgid_attr(9)
• ib_create_srq_user(9)
• ib_create_qp_user(9)
• ib_resolve_eth_dmac(9)
• ib_modify_qp_with_udata(9)
• ib_alloc_mr(9)
• ib_alloc_mr_integrity(9)
• ib_alloc_xrcd_user(9)
• ib_dealloc_xrcd_user(9)
• ib_create_wq(9)
• ib_destroy_wq_user(9)
• ib_map_mr_sg_pi(9)
• ib_map_mr_sg(9)
• ib_sg_to_pages(9)
• ib_drain_sq(9)
• ib_drain_rq(9)
• ib_drain_qp(9)
• rdma_alloc_hw_stats_struct(9)
• rdma_free_hw_stats_struct(9)

like, that's the whole group chat and they all understood the assignment 💀👑

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🧚 and that's a wrap!! this page lives in ./drivers/infiniband/core, and it's dated October 2026 in the Kernel API Manual, section 9. go forth and free your SGID refs responsibly, bestie — mwah 💜🌈⭐