xdp_return_frag(9)

hii bestie 💖 welcome to the xdp_return_frag(9) page from the Kernel API Manual. This is the function that handles one XDP frag: it frees it, or it decrements its refcount. That's the whole assignment. ✨

💅 NAME 💅

xdp_return_frag — free one XDP frag or decrement its refcount

🎀 SYNOPSIS 🎀

void xdp_return_frag (netmem_ref netmem , const struct xdp_buff *xdp );

🌸 ARGUMENTS 🌸

Okay so there are two args, and both matter, fr fr:

• netmem — the network memory reference to release. this is the thing getting the release treatment 🫶
• xdp — the xdp_buff to release the frag for. it's giving "pass the buff, handle the frag" 💅

🦋 SEE ALSO 🦋

Kernel file ./net/core/xdp.c is right there, and these pages are also in the group chat:

• xdp_reg_page_pool(9)
• xdp_unreg_page_pool(9)
• xdp_rxq_info_attach_page_pool(9)
• xdp_build_skb_from_buff(9)
• xdp_copy_frags_from_zc(9)
• xdp_build_skb_from_zc(9)
• bpf_xdp_metadata_rx_timestamp(9)
• bpf_xdp_metadata_rx_hash(9)
• bpf_xdp_metadata_rx_vlan_tag(9)

mwah 💋 this little page is brought to you by source/version ./net/core, dated October 2026, and it's still xdp_return_frag(9) — periodt. 👑