IBV_ALLOC_PD(3)

💖 IBV_ALLOC_PD(3) — the libibverbs programmer's manual, but make it make sense 💖

okay bestie, sit down, hydrate, and let's talk about protection domains 🫶 this is page IBV_ALLOC_PD(3) from the Libibverbs Programmer's Manual, and honestly? it's giving "small function, big responsibility". we're doing two things here: getting a PD, and giving it back. that's it. that's the whole page. slay.

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✨ NAME ✨

ibv_alloc_pd, ibv_dealloc_pd — allocate or deallocate a protection domain (PDs)

like… the name literally ate. it tells you everything. one makes a PD, one un-makes a PD. periodt. 💅

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🌸 SYNOPSIS 🌸

#include <infiniband/verbs.h>

struct ibv_pd *ibv_alloc_pd(struct ibv_context *context);

int ibv_dealloc_pd(struct ibv_pd *pd);

copy these exactly, bestie, character for character, no vibes-based improvisation on the signatures 🙈

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🦋 DESCRIPTION 🦋

so. ibv_alloc_pd() allocates a PD for the RDMA device context context. that's the whole sentence. iconic brevity. 👑

and ibv_dealloc_pd() deallocates the PD pd. also the whole sentence. the symmetry? immaculate. ✨

PD = protection domain, and yes it's the thing all your other resources wanna be associated with. iykyk.

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💜 RETURN VALUE 💜

• ibv_alloc_pd() — returns a pointer to the allocated PD, or NULL if the request fails. no PD for you, bestie. 😭
• ibv_dealloc_pd() — returns 0 on success, or the value of errno on failure (which indicates the failure reason). so like, check that errno, don't just vibe and move on. 🔥

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🎀 NOTES 🎀

ibv_dealloc_pd() may fail if any other resource is still associated with the PD being freed. 💀

translation: don't try to free the PD while its little resource children are still hanging around. clean up your room before you move out, fr fr. 🧹

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🌈 SEE ALSO 🌈

• ibv_reg_mr(3)
• ibv_create_srq(3)
• ibv_create_qp(3)
• ibv_create_ah(3)
• ibv_create_ah_from_wc(3)

go read these next, bestie, they're the ones that'll be like "hey can i be associated with your PD" 🫶

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👑 AUTHORS 👑

Dotan Barak <dotanba@gmail.com>

thank you for your service, king 🫡💖

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and that's the page!! written by libibverbs, dated 2006-10-31, still serving looks in IBV_ALLOC_PD(3) format. mwah. go allocate responsibly. 💅✨