rvt_qp_wqe_reserve(9)

💅 rvt_qp_wqe_reserve(9) — the Kernel API Manual glow-up 🎀

okay bestie, so this little icon lives in the Kernel API Manual and it's called rvt_qp_wqe_reserve — say that five times fast, i can't either 😭. it's a tiny little function but it's doing very real work in the RDMA world, and honestly? it's giving "quiet main character" energy. ✨

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🌸 NAME 🌸

rvt_qp_wqe_reserve — the reserve operation bestie. that's it, that's the vibe. it reserves. it's an operation. periodt. 💅

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✨ SYNOPSIS ✨

void rvt_qp_wqe_reserve (struct rvt_qp *qp , struct rvt_swqe *wqe );

like, no return value, she just does the thing and dips. void queen. 👑

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🫶 ARGUMENTS 🫶

• qp — the rvt qp</p>. that's the queue pair, the whole main-character object of the story. 🦋
• wqe — the send wqe</p>. this is the send work queue entry, aka the lil receipt for the work being posted. 🧾

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💖 DESCRIPTION 💖

okay so here's the tea ☕ — this routine is used in post send to record a wqe relative reserved operation use. that's the whole flex. it's lowkey just bookkeeping but it's iconic bookkeeping. ngl, without her the post send path would be a whole mess. 🔥

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🌈 SEE ALSO 🌈

bestie there are SO many friends here, we're literally having a party 🎉 and everyone showed up.

Kernel file ./include/rdma/rdmavt_qp.h — the home base, the mothership, the lore drop 💜

and then the whole squad:

• struct rvt_ud_wr(9)
• struct rvt_krwq(9)
• rvt_get_swqe_ah_attr(9)
• rvt_get_swqe_remote_qpn(9)
• rvt_get_swqe_remote_qkey(9)
• rvt_get_swqe_pkey_index(9)
• rvt_get_rq_count(9)
• struct rvt_operation_params(9)
• rvt_is_user_qp(9)
• rvt_get_qp(9)
• rvt_put_qp(9)
• rvt_put_swqe(9)
• rvt_qp_wqe_unreserve(9)
• rvt_div_round_up_mtu(9)
• rvt_div_mtu(9)
• rvt_timeout_to_jiffies(9)
• rvt_lookup_qpn(9)
• rvt_mod_retry_timer_ext(9)
• rvt_put_qp_swqe(9)
• rvt_qp_swqe_incr(9)
• rvt_recv_cq(9)
• rvt_send_cq(9)
• rvt_qp_complete_swqe(9)
• struct rvt_qp_iter(9)
• ib_cq_tail(9)
• ib_cq_head(9)
• rvt_free_rq(9)
• rvt_to_iport(9)
• rvt_rc_credit_avail(9)

like, every single one of them, no skips, no cuts, we don't do that here 💀 — go read all of them, iykyk 📚✨

psst — note that rvt_qp_wqe_unreserve(9) is literally her counterpart. reserve, unreserve. the duality of woman. 🦋💅

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🎀 the cute lil sign-off 🎀

this absolute slay of a page comes from ./include/rdma, dated October 2026, and it's filed under rvt_qp_wqe_reserve(9). that's the source, the version, the date — the whole receipt, bestie. keep it forever. 🫶💖

now go reserve some wqes and be iconic about it. mwah. 💋🌟