xdp_buff_add_frag(9)

💅 NAME 💅

xdp_buff_add_frag — the one that attaches a frag to &xdp_buff, bestie 🎀

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✨ SYNOPSIS ✨

okay so picture this in the Kernel API Manual, section 9, and it looks exactly like this:

bool xdp_buff_add_frag (struct xdp_buff *xdp , netmem_ref netmem , u32
       offset , u32 size , u32 truesize );

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🌸 ARGUMENTS 🌸

• xdp — the XDP buffer you're attaching the frag to 🫶
• netmem — the network memory that's holding the frag
• offset — the offset where the frag starts
• size — how big the frag is
• truesize — the total memory size the frag occupies

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🦋 DESCRIPTION 🦋

So this is the version of __xdp_buff_add_frag that takes care of the pfmemalloc bit for you 💫 like, same energy, it just handles that bit so you don't have to. Obsessed, honestly.

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🔥 RETURN 🔥

• true — success, we ate 💅
• false — there's no space for the frag in the shared info struct 😭

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🌈 SEE ALSO 🌈

• Kernel file ./include/net/xdp.h
• XDP RX-queue information(9)
• __xdp_buff_add_frag(9)
• xdp_rxq_info_attach_mem_model(9)
• xdp_rxq_info_detach_mem_model(9)

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and that's the whole page, bestie 🫶 mwah 💋 — it calls ./include/net home, it's dated October 2026, and if you ever lose it in the group chat it's filed under xdp_buff_add_frag(9). periodt ✨