netdev_queue_get_dma_dev(9)

🌸 NAME 🌸

okay bestie, this is netdev_queue_get_dma_dev(9) from the Kernel API Manual ✨ — it's the function that gets the DMA device for zero-copy operations 💅.

✨ SYNOPSIS ✨

struct device * netdev_queue_get_dma_dev (struct net_device *dev ,
       unsigned int idx , enum netdev_queue_type type );

🎀 ARGUMENTS 🎀

• dev — the net_device, periodt 💖
• idx — queue index, like which queue we're looking at 🔢
• type — queue type, and it's RX or TX, no cap 📥📤

🦋 DESCRIPTION 🦋

So this function gets the DMA device for zero-copy operations to be used for this queue 💫. If the queue is an RX queue leased from a physical queue, we retrieve the physical queue's DMA device — yep, that's the vibe 🌈. When the DMA device is not available or valid, the function will return NULL 😭. That's the lore, bestie.

🔥 RETURN 🔥

Device or NULL on error — literally that simple 💅.

👑 SEE ALSO 👑

Kernel file ./net/core/netdev_queues.c — go peek, bestie 📖✨.

mwah 💋 this page comes from ./net/core, dated October 2026, and it's netdev_queue_get_dma_dev(9) — bye bestie, slay your DMA adventures 🫶🎀