hns_roce_mtr_create(9)

💖 hns_roce_mtr_create(9) 💖

okay so bestie, welcome to the kernel API manual for hns_roce_mtr_create(9) — yes that's the section 9 one, we're in kernel-hacker territory now 🧚✨ this one's literally about creating an hns memory translate region, and honestly? it's giving "small function, big responsibility" 👑

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✨ NAME ✨

hns_roce_mtr_create — Create hns memory translate region. that's the whole vibe, no cap 🎀

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🌸 SYNOPSIS 🌸

int hns_roce_mtr_create (struct hns_roce_dev *hr_dev , struct
hns_roce_mtr *mtr , struct hns_roce_buf_attr *buf_attr , unsigned int
ba_page_shift , struct ib_udata *udata , unsigned long user_addr );

she takes six arguments and returns an int, periodt 💅

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🦋 ARGUMENTS 🦋

six of them, and yes we're doing all six, don't scroll past 🫶

• hr_dev — RoCE device struct pointer. this is the device bestie herself 🎀
• mtr — memory translate region. the thing you're creating, main character energy fr ✨
• buf_attr — buffer attribute for creating mtr. the buffer's whole personality 🔥
• ba_page_shift — page shift for multi-hop base address table. lowkey sounds scary but it's just the page shift for that multi-hop base address table, iykyk 💜
• udata — user space context, if it's NULL, means kernel space. so like, NULL = kernel space, got it? that's the tea ☕
• user_addr — userspace virtual address to start at. starting point, literally 🌈

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🌟 SEE ALSO 🌟

• Kernel file ./drivers/infiniband/hw/hns/hns_roce_mr.c — go read the source, bestie, it's right there 📖💖

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💀 friendly reminder that the whole udata-being-NULL thing changes whether you're in user space or kernel space context, so don't sleep on it 🙈

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that's the whole page, no notes 👑 ok bye, mwah 💋 — this little icon was brought to you by the <rainbow>hns_roce_mtr_create(9)</rainbow> manual in <pink>Kernel API Manual</pink>, straight outta <purple>./drivers/infiniband/hw/hns</purple>, dated <cyan>October 2026</cyan> 🎀✨🦋