nfp_net_rx_alloc_one(9)

✨ nfp_net_rx_alloc_one — Kernel API Manual ✨

okay so bestie, we're in the kernel API manual for nfp_net_rx_alloc_one(9) and honestly? it's giving "tiny function, big responsibilities" 💅

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🌸 NAME 🌸

nfp_net_rx_alloc_one — allocate and map a page frag for RX 🎀

(like, it gets you a page frag and sorts out the DMA mapping, one-stop shop, no cap)

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🦋 SYNOPSIS 🦋

void * nfp_net_rx_alloc_one (struct nfp_net_dp *dp , dma_addr_t
       *dma_addr );

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💖 ARGUMENTS 💖

• dp — the NFP Net data path struct 🫶 (your whole data-path vibe lives in here)
• dma_addr — pointer to storage for the DMA address. heads up: this is an output param, so the function writes the address back out through it 📝✨

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🧚 DESCRIPTION 🧚

so what does it actually do? it allocates a brand-new page frag and maps it for DMA. that's the whole personality. iconic, focused, no side quests 🌈

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⭐ RETURN ⭐

returns the allocated page frag… or NULL on failure 😭 (so like, always vibe check your return value, fr fr)

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👑 SEE ALSO 👑

• Kernel file ./drivers/net/ethernet/netronome/nfp/nfp_net_dp.c 📁
• nfp_net_tx_ring_init(9)
• nfp_net_rx_ring_init(9)
• nfp_net_rx_ring_reset(9)
• nfp_net_rx_ring_bufs_free(9)
• nfp_net_rx_ring_bufs_alloc(9)
• nfp_net_rx_ring_free(9)
• nfp_net_rx_ring_alloc(9)

like the whole ring-buffer friend group 💜 go read them too, iykyk

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💀 reminder: NULL means it failed — don't just start DMA-ing into a vibes-only pointer, bestie 🙈

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and that's the page!! source/version lives at ./drivers/net/ethernet/netrono... and it's dated October 2026 🗓️✨ slay, go allocate responsibly 🎀🦋💅