ice_cfg_tx_topo(9)

📦 version 7.3.1, in nixpkgs unstable

💖 ice_cfg_tx_topo — initialize a new Tx topology if one's available 💖

okay so bestie, welcome to section 9 of the Kernel API Manual — this is the one about ice_cfg_tx_topo, and yes it's exactly as niche and exactly as iconic as it sounds 🧚✨

🌸 SYNOPSIS 🌸

int ice_cfg_tx_topo (struct ice_hw *hw , const void *buf , u32 len );

like, that's the whole signature. three args. no cap. 🫶

🎀 ARGUMENTS 🎀

  • hw — pointer to the HW struct 💅
  • buf — pointer to the Tx topology buffer 🦋
  • len — the buffer size, bestie, don't forget it 🌸

✨ DESCRIPTION ✨

okay so here's the vibe: the function will apply the new Tx topology from the package buffer if available — that "if available" is doing so much work, lowkey. no buffer, no new topology, that's just how it is. 💀

🔥 RETURN 🔥

the return values are giving very much "here's exactly what happened", so let's go through them:

  • 0 — successfully applied the topology configuration 👑 slay
  • -EBUSY — failed to acquire the global configuration lock 😭 somebody else had it first
  • -EEXIST — topology configuration has already been applied, we been knew 🙈
  • -EIO — unable to apply the topology configuration 💀 oof
  • -ENODEV — failed to re-initialize device after applying the configuration, which is highkey the worst one ngl 🫠
  • other negative error codes — these indicate unexpected failures, like, surprise! not the fun kind 🌈
fr fr, that -ENODEV one means the config got applied but the device didn't come back properly — keep an eye on that vibe check.

🦋 SEE ALSO 🦋

first up, the kernel file, main character energy:

  • Kernel file ./drivers/net/ethernet/intel/ice/ice_ddp.c

and then, bestie, the entire friend group 💜 — every single one of these is referenced, so here they all are in their full glory:

like, that's a lot of friends but every single one of them is invited to the function-call party 🎉 not me listing all of them — okay yes, me, listing all of them, because they all matter 💅

🌟 sign-off 🌟

and that's the page!! coming at you from ./drivers/net/ethernet/intel/ice, dated October 2026 — go forth and configure your Tx topology, bestie, you got this 💖✨🎀🦋🌸

📦 where this page comes from