fbnic_tlv_attr_put_value(9)

📦 version 7.3.1, in nixpkgs unstable

💖 fbnic_tlv_attr_put_value — the one that adds your data to the message 💖

okay so bestie, welcome to the kernel API manual for fbnic_tlv_attr_put_value 💅 this is a kernel API page and honestly? she's giving "quiet little helper that keeps everything aligned" and we respect her for it. ✨

🌸 NAME 🌸

fbnic_tlv_attr_put_value — add data to a message 🫶

🦋 SYNOPSIS 🦋

int fbnic_tlv_attr_put_value (struct fbnic_tlv_msg *msg , const u16
attr_id , const void *value , const int len );

like, that's the whole signature, no notes, copy it exactly, periodt 💅

🎀 ARGUMENTS 🎀

  • msg — the message header we're adding this flag attribute to. it's the main character of this whole operation ngl 👑
  • attr_id — the ID of the flag attribute we're adding to the message, iykyk 🏷️
  • value — a pointer to the data that's gonna get stored 💾
  • len — the size of the data to be stored, fr fr 📏

⭐ RETURN ⭐

okay so the vibe check on the return value:

  • -ENOSPC — returned if there's literally no room for the attribute 😭 like the message said "no more, I'm full"
  • 0 — otherwise. that's it. that's the whole deal. slay ✨

🔥 DESCRIPTION 🔥

so what she does is add the header and copy the data pointed to by value into the message 💖 and then — this is the iconic part — the result gets rounded up to the nearest DWORD for sizing, so that the headers stay aligned. the way that alignment is preserved? obsessed. 👑

the assumption here (and this is important, bestie, don't skip it) is that the value field is in a format where byte ordering can be guaranteed, like a byte array or a little endian format. no cap, that's a real assumption, not a suggestion 🙈

⚠️ heads up: if your data doesn't have guaranteed byte ordering, this function is assuming things about it. read the above line again, bestie, it's doing the heavy lifting 🫶

🌈 SEE ALSO 🌈

the whole friend group, in order 💜:

Kernel file ./drivers/net/ethernet/meta/fbnic/fbnic_tlv.c

💫 that's the whole page, bestie 💫 this one came from ./drivers/net/ethernet/meta/fbnic and it's dated October 2026 — go off, October 2026, we love a timestamped queen 🎀✨💖

📦 where this page comes from