ice_fill_rx_descs(9)

📦 version 7.3.1, in nixpkgs unstable

💖 ice_fill_rx_descs (9) — the Kernel API Manual moment 🎀

okay so bestie, welcome to the section 9 glow-up of ice_fill_rx_descs(9). this is the Intel ice driver's little buffer-wrangler, and honestly? she's giving "backstage crew at the concert" energy — nobody claps for her but the whole show falls apart without her. let's get into it ✨

✨ NAME ✨

ice_fill_rx_descs — grab buffers out of the XSK buffer pool and, like, use them 💅

🦋 SYNOPSIS 🦋

u16 ice_fill_rx_descs (struct xsk_buff_pool *pool , struct xdp_buff
**xdp , union ice_32b_rx_flex_desc *rx_desc , u16 count );

yes the spacing is exactly like that, don't come for me, I'm just the messenger 🫶

🌸 ARGUMENTS 🌸

  • pool — the XSK Buffer pool you're pulling the buffers from. this is the source of truth, the purse, the stash 💜
  • xdp — the SW ring of xdp_buff that's gonna hold the buffers. think of it as the cute little display shelf 🎀
  • rx_desc — pointer to the Rx descriptors that are getting filled. this is the actual thing being written into, main character energy fr fr 👑
  • count — how many buffers to allocate. the literal number, no vibes-based guessing allowed 🔥

💀 DESCRIPTION 💀

so what does she actually do? she allocates a number of Rx buffers from the fill ring or from the internal recycle mechanism, and then places them on the Rx ring. that's the whole job. no cap. 💅

⚠️ heads up bestie: ring wrap should be handled by the caller of this function. she is not doing the wrapping for you, that's your problem, not hers 😭

and what does she give back? she returns the amount of allocated Rx descriptors — that's the return value, go read it, it's right there in your hand 🌈

⭐ SEE ALSO ⭐

the kernel file in question, for the curious girlies who wanna read the source directly:

./drivers/net/ethernet/intel/ice/ice_xsk.c

and the whole friend group, in order, because I would never leave one out 🫶:

and that's the page, bestie!! 🧚 brought to you by the fine folks over at ./drivers/net/ethernet/intel/ice, dated October 2026, and yes she is literally titled ice_fill_rx_descs(9) — go forth and fill those descriptors, iykyk 💖✨🎀

📦 where this page comes from