hfi1_rc_verbs_aborted(9)

πŸ“¦ version 7.3.1, in nixpkgs unstable

πŸ’… NAME πŸ’…

hfi1_rc_verbs_aborted β€” bestie, this is the one that handles abort status ✨

Okay so real talk, the whole manual is hfi1_rc_verbs_aborted(9) from the Kernel API Manual, and it's lowkey iconic. Let's get into it 🫢


✨ SYNOPSIS ✨

void hfi1_rc_verbs_aborted (struct rvt_qp *qp , struct hfi1_opa_header
*opah );

Like, that's the whole signature. No cap, that's it πŸ’–


πŸŽ€ ARGUMENTS πŸŽ€

  • qp β€” the QP. literally the queue pair, that's the whole vibe πŸ‘‘
  • opah β€” the opa header. yes bestie, the opa header πŸ¦‹

πŸ”₯ DESCRIPTION πŸ”₯

So what this code does is it modifies both the ACK bit in BTH[2] and the s_flags, all so it can go into send one mode. Two things at once, main character energy fr fr πŸ’…βœ¨

And why, you ask? Because it serves to throttle the send engine to only send a single packet β€” which is exactly what you want in the likely case that a link has gone down πŸ˜­πŸ’€ Like, if the link's acting sus, don't spam it with packets. Just one. One packet. That's the whole mood. 🌸

ngl this is a "the link probably died so let's chill" situation and honestly? relatable πŸ™ˆ

🌈 SEE ALSO 🌈

Kernel file ./drivers/infiniband/hw/hfi1/rc.c β€” and the whole friend group:

Go read them, they ate πŸ“


<3

And that's the page, bestie πŸ§šπŸ’œ This whole thing lives over in ./drivers/infiniband/hw/hfi1, dated October 2026, and it's canonically hfi1_rc_verbs_aborted(9) β€” go off, kernel docs, periodt β­πŸ‘‘

πŸ“¦ where this page comes from