__ice_alloc_rx_bufs_zc(9)

✨ __ice_alloc_rx_bufs_zc(9) ✨

okay so bestie, we're in the Kernel API Manual today and this one is a little zero-copy baddie from the ice driver family 🧊💅 she allocates Rx buffers and she does it fast.

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🌸 NAME 🌸

__ice_alloc_rx_bufs_zc — allocate a number of Rx buffers 🎀

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✨ SYNOPSIS ✨

bool __ice_alloc_rx_bufs_zc (struct ice_rx_ring *rx_ring , struct
       xsk_buff_pool *xsk_pool , u16 count );

like, look at her go 😭 three args, one bool return, no notes.

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🫶 ARGUMENTS 🫶

• rx_ring — the Rx ring 💫 literally the ring we're filling, main character of the whole operation.
• xsk_pool — the XSK buffer pool we pick buffers from, the ones that are gonna get filled by HW 🔥
• count — the number of buffers to allocate. yes bestie, that many. exactly that many 🌈

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👑 DESCRIPTION 👑

So here's the vibe check 💅 this function places count descriptors onto the Rx ring. That's the whole assignment, and she ate.

Then there's the ring-wrap situation 🌀 — she handles the wrap for the case where the space from next_to_use up to the end of the ring is less than count. no cap, that's the fiddly bit and she's got it.

Finally she does a tail bump 🎀 little bump, big energy.

Returns true if all allocations were successful, false if any fail. so fr fr, check your return value 🙈

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🦋 SEE ALSO 🦋

Kernel file: ./drivers/net/ethernet/intel/ice/ice_xsk.c ⭐

and the whole friend group 💖:

ice_qvec_toggle_napi(9), ice_qvec_dis_irq(9), ice_qvec_cfg_msix(9), ice_qvec_ena_irq(9), ice_xsk_pool_disable(9), ice_xsk_pool_enable(9), ice_realloc_rx_xdp_bufs(9), ice_xsk_pool_setup(9), ice_fill_rx_descs(9), ice_alloc_rx_bufs_zc(9), ice_clean_xdp_irq_zc(9), ice_xmit_xdp_tx_zc(9), ice_run_xdp_zc(9), ice_clean_rx_irq_zc(9), ice_xmit_pkt(9), ice_xmit_pkt_batch(9), ice_fill_tx_hw_ring(9), ice_xmit_zc(9), ice_xsk_wakeup(9), ice_xsk_any_rx_ring_ena(9), ice_xsk_clean_rx_ring(9), ice_xsk_clean_xdp_ring(9)

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and that's the page, bestie 🧚💜 straight out of ./drivers/net/ethernet/intel/ice, dated October 2026, and she's filed under __ice_alloc_rx_bufs_zc(9) forever. slay 💅✨🍓