ib_resolve_eth_dmac(9)

💅 ib_resolve_eth_dmac(9) 💅

okay so bestie, we're in the Kernel API Manual, section 9, and this one's literally called ib_resolve_eth_dmac — it lives to resolve destination mac address. that's the whole vibe. no cap. 🦋

---

🌸 NAME 🌸

ib_resolve_eth_dmac — Resolve destination mac address ✨

---

🎀 SYNOPSIS 🎀

int ib_resolve_eth_dmac (struct ib_device *device , struct rdma_ah_attr
*ah_attr );

like, that's the whole signature, she's not complicated, she's just doing her job 💅

---

💖 ARGUMENTS 💖

• device — the Device to consider 👑 like, which device are we even talking about here, bestie, that one.
• ah_attr — the address handle attribute which describes the source and destination parameters.

and okay so here's the tea about ah_attr 🍓: ib_resolve_eth_dmac resolves the destination mac address and the L3 hop limit. It returns 0 on success or an appropriate error code. And — iconic behaviour — it initializes the necessary ah_attr fields when the call is successful. so like, if it works, your struct got a glow-up. if it doesn't, error code, sorry babe 😭

---

🔥 SEE ALSO 🔥

the Kernel file ./drivers/infiniband/core/verbs.c — that's the source of truth, go look, iykyk 👀

and then the whole friend group of related calls, fr fr:

• __ib_alloc_pd(9)
• ib_dealloc_pd_user(9)
• rdma_copy_ah_attr(9)
• rdma_replace_ah_attr(9)
• rdma_move_ah_attr(9)
• rdma_create_ah(9)
• rdma_create_user_ah(9)
• rdma_move_grh_sgid_attr(9)
• rdma_destroy_ah_attr(9)
• ib_create_srq_user(9)
• ib_create_qp_user(9)
• ib_modify_qp_with_udata(9)
• ib_alloc_mr(9)
• ib_alloc_mr_integrity(9)
• ib_alloc_xrcd_user(9)
• ib_dealloc_xrcd_user(9)
• ib_create_wq(9)
• ib_destroy_wq_user(9)
• ib_map_mr_sg_pi(9)
• ib_map_mr_sg(9)
• ib_sg_to_pages(9)
• ib_drain_sq(9)
• ib_drain_rq(9)
• ib_drain_qp(9)
• rdma_alloc_hw_stats_struct(9)
• rdma_free_hw_stats_struct(9)

like, that's the whole group chat, go say hi 💜

---

and that's the page, bestie 🫶 — brought to you by the folks at ./drivers/infiniband/core, dated October 2026, and remember: it's ib_resolve_eth_dmac(9) or nothing. periodt. 💅✨