hfi1_make_grh(9)

💅 hfi1_make_grh(9) — like, the Kernel API Manual page you actually wanna read

okay so bestie, welcome to the Kernel API Manual entry for hfi1_make_grh(9) 🎀 this one's short and sweet, so grab your iced coffee and let's go ✨

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🦋 NAME 🦋

hfi1_make_grh — literally just constructs a GRH header, that's the whole vibe 💫

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🌸 SYNOPSIS 🌸

u32 hfi1_make_grh (struct hfi1_ibport *ibp , struct ib_grh *hdr , const
struct ib_global_route *grh , u32 hwords , u32 nwords );

no cap, that's the exact signature, keep it character for character bestie 🫶

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✨ ARGUMENTS ✨

• ibp — a pointer to the IB port 👑
• hdr — a pointer to the GRH header being constructed 🎀
• grh — the global route address to send to 🦋
• hwords — size of header after grh being sent in dwords 📏
• nwords — the number of 32 bit words of data being sent 🔢

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💖 DESCRIPTION 💖

Return the size of the header in 32 bit words. that's it. that's the whole thing 🙈 short king behavior, honestly 💅

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/infiniband/hw/hfi1/ruc.c 📁
• build_ahg(9)
• hfi1_make_ruc_header_16B(9)
• hfi1_make_ruc_header_9B(9)
• hfi1_schedule_send_yield(9)
• hfi1_do_send(9)

iykyk — go read those next, they're all in the same friend group fr fr 🌈

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k bye bestie, slay your send path 💜

this little love letter lives in ./drivers/infiniband/hw/hfi1, dated October 2026, and yeah it's filed under hfi1_make_grh(9) in the Kernel API Manual — periodt 👑🌸