irdma_mcast_mac(9)

🦋 irdma_mcast_mac(9) — the Kernel API Manual, bestie edition 💅

okay so real talk, this is page irdma_mcast_mac(9) from the Kernel API Manual (section 9, kernel-API girlies only ✨) and it's basically a tiny little lookup helper. it does one job and it does it cute.

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💖 NAME 💖

irdma_mcast_mac — get the multicast MAC for an IP address. that's it. that's the whole personality. she takes an IP and hands you back the MAC. icon behaviour, no notes 🎀

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✨ SYNOPSIS ✨

void irdma_mcast_mac (u32 *ip_addr , u8 *mac , bool ipv4 );

three (3) parameters, zero (0) drama. and yes she returns void bestie, don't come for her 🌸

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🫶 ARGUMENTS 🫶

• ip_addr — your IPv4 or IPv6 address. both vibes welcome, no gatekeeping 💖
• mac — a pointer to where the resulting MAC address lands. she writes, you receive 🎁
• ipv4 — the flag that says which one we're dealing with, IPv4 or IPv6. it's giving "choose your fighter" ⚔️

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🔥 SEE ALSO 🔥

the whole squad, fr fr. also this all lives in the kernel file ./drivers/infiniband/hw/irdma/verbs.c — go say hi 👋

• irdma_query_device(9)
• irdma_query_port(9)
• irdma_disassociate_ucontext(9)
• irdma_mmap(9)
• irdma_alloc_push_page(9)
• irdma_alloc_ucontext(9)
• irdma_dealloc_ucontext(9)
• irdma_alloc_pd(9)
• irdma_dealloc_pd(9)
• irdma_get_pbl(9)
• irdma_clean_cqes(9)
• _irdma_destroy_qp(9)
• irdma_destroy_qp(9)
• irdma_setup_virt_qp(9)
• irdma_setup_umode_qp(9)
• irdma_setup_kmode_qp(9)
• irdma_create_qp(9)
• irdma_query_qp(9)
• irdma_query_pkey(9)
• irdma_modify_qp_roce(9)
• irdma_modify_qp(9)
• irdma_srq_free_rsrc(9)
• irdma_cq_free_rsrc(9)
• irdma_free_cqbuf(9)
• irdma_process_resize_list(9)
• irdma_destroy_srq(9)
• irdma_destroy_cq(9)
• irdma_resize_cq(9)
• irdma_srq_event(9)
• irdma_modify_srq(9)
• irdma_create_srq(9)
• irdma_query_srq(9)
• irdma_create_cq(9)
• irdma_get_mr_access(9)
• irdma_free_stag(9)
• irdma_create_stag(9)
• irdma_next_pbl_addr(9)
• irdma_copy_user_pgaddrs(9)
• irdma_check_mem_contiguous(9)
• irdma_check_mr_contiguous(9)
• irdma_setup_pbles(9)
• irdma_handle_q_mem(9)
• irdma_hw_alloc_mw(9)
• irdma_alloc_mw(9)
• irdma_dealloc_mw(9)
• irdma_hw_alloc_stag(9)
• irdma_alloc_mr(9)
• irdma_set_page(9)
• irdma_map_mr_sg(9)
• irdma_hwreg_mr(9)
• irdma_reg_user_mr(9)
• irdma_reg_phys_mr(9)
• irdma_get_dma_mr(9)
• irdma_del_memlist(9)
• irdma_dereg_mr(9)
• irdma_post_send(9)
• irdma_post_srq_recv(9)
• irdma_post_recv(9)
• irdma_flush_err_to_ib_wc_status(9)
• irdma_process_cqe(9)
• irdma_poll_one(9)
• __irdma_poll_cq(9)
• irdma_poll_cq(9)
• irdma_req_notify_cq(9)
• irdma_alloc_hw_port_stats(9)
• irdma_get_hw_stats(9)
• irdma_query_gid(9)
• mcast_list_add(9)
• mcast_list_del(9)
• mcast_list_lookup_ip(9)
• irdma_mcast_cqp_op(9)
• irdma_attach_mcast(9)
• irdma_detach_mcast(9)
• irdma_ah_exists(9)
• irdma_destroy_ah(9)
• irdma_create_user_ah(9)
• irdma_create_ah(9)
• irdma_query_ah(9)
• irdma_init_roce_device(9)
• irdma_init_iw_device(9)
• irdma_init_rdma_device(9)
• irdma_port_ibevent(9)
• irdma_ib_unregister_device(9)
• irdma_ib_register_device(9)
• irdma_ib_dealloc_device(9)

like I said. the whole squad. 87 of them. I counted so you don't have to 💀👑

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ngl the multicast MAC / IP matching task is genuinely a whole personality trait and she's carrying it 💅

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and that's the page!! this one comes to you from ./drivers/infiniband/hw/irdma, dated October 2026, and it's literally called irdma_mcast_mac(9) — bestie she ATE and left no crumbs, mwah 🍓💜