STRUCT SKBUF_DMA_DESCRIPTOR(9)

💅 struct skbuf_dma_descriptor(9) 💅

okay so bestie, welcome to the Kernel API Manual 💖 — we're looking at struct skbuf_dma_descriptor, and it's giving “one skb for each dma descriptor” energy. That's literally the whole vibe: skb for each dma descriptor. No cap. 🦋

💖 NAME 💖

struct skbuf_dma_descriptor — skb for each dma descriptor. ✨

✨ SYNOPSIS ✨

       struct skbuf_dma_descriptor {
           struct scatterlist sgl[MAX_SKB_FRAGS + 1];
           struct dma_async_tx_descriptor *desc;
           dma_addr_t dma_address;
           struct sk_buff *skb;
           int sg_len;
        };

🫶 Members 🫶

okay these are the members, bestie — every single one is iconic:

• sgl — pointer for sglist. 💅
• desc — pointer to dma descriptor. 🔥
• dma_address — dma address of sglist. 🎀
• skb — pointer to SKB transferred using DMA. 👑
• sg_len — number of entries in the sglist. 🌸

🔗 SEE ALSO 🔗

like, go peek at the Kernel file ./drivers/net/ethernet/xilinx/xilinx_axienet.h for the full lore, and also these related structs/functions:

• struct axidma_bd(9)
• struct axienet_local(9)
• struct axienet_option(9)
• axienet_ior(9)
• axienet_iow(9)
• axienet_dma_out32(9)
• axienet_dma_out64(9)

source/version vibes: ./drivers/net/ethernet/xilinx · date: October 2026 · and yeah bestie, this footer is for struct skbuf_dma_descriptor(9) — periodt. 🫶💖