srpt_get_iou(9)

💅 srpt_get_iou(9) — kernel API manual, but make it make sense

okay so bestie, we're looking at srpt_get_iou(9) from the Kernel API Manual, and honestly? she's a short one but she matters. ✨

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🌸 NAME 🌸

srpt_get_iou — write IOUnitInfo to a management datagram

yes girl, that's the whole vibe: shove an IOUnitInfo into a management datagram. no cap. 🎀

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🦋 SYNOPSIS 🦋

void srpt_get_iou (struct ib_dm_mad *mad );

literally that's it. one function, one argument, returns nothing (void), and she ate. 💅

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🍓 ARGUMENTS 🍓

• mad — the datagram that will be sent as the response to DM_ATTR_IOU_INFO. that's her whole job, she's the ride 💖

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✨ DESCRIPTION ✨

so like, this is the function that does the thing — and if you want the lore, the manpage points you at two places, and you will be reading them:

• section 16.3.3.3 IOUnitInfo in the InfiniBand Architecture Specification
• section B.7, table B.6 in the SRP r16a document

that's the icon behavior honestly: "go read the spec, iykyk" 🧚

no extra tips from me, bestie — the original only says "see also" these two, and we do not invent facts in this group chat 🫶

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👑 SEE ALSO 👑

first up, the kernel file:

• ./drivers/infiniband/ulp/srpt/ib_srpt.c

and then the whole extended friend group, in order, exactly as listed:

• srpt_event_handler(9), srpt_srq_event(9), srpt_qp_event(9)
• srpt_set_ioc(9), srpt_get_class_port_info(9), srpt_get_ioc(9)
• srpt_get_svc_entries(9), srpt_mgmt_method_get(9)
• srpt_mad_send_handler(9), srpt_mad_recv_handler(9)
• srpt_refresh_port(9), srpt_unregister_mad_agent(9), srpt_alloc_ioctx(9)
• srpt_free_ioctx(9), srpt_alloc_ioctx_ring(9), srpt_free_ioctx_ring(9)
• srpt_set_cmd_state(9), srpt_test_and_set_cmd_state(9)
• srpt_post_recv(9), srpt_zerolength_write(9), srpt_get_desc_tbl(9)
• srpt_init_ch_qp(9), srpt_ch_qp_rtr(9), srpt_ch_qp_rts(9)
• srpt_ch_qp_err(9), srpt_get_send_ioctx(9), srpt_abort_cmd(9)
• srpt_rdma_read_done(9), srpt_build_cmd_rsp(9)
• srpt_build_tskmgmt_rsp(9), srpt_handle_cmd(9), srpt_handle_tsk_mgmt(9)
• srpt_handle_new_iu(9), srpt_send_done(9), srpt_create_ch_ib(9)
• srpt_close_ch(9), srpt_cm_req_recv(9), srpt_cm_rtu_recv(9)
• srpt_cm_handler(9), srpt_queue_response(9), srpt_release_sport(9)
• srpt_lookup_port(9), srpt_add_one(9), srpt_remove_one(9)
• srpt_close_session(9), srpt_parse_i_port_id(9), srpt_make_tpg(9)
• srpt_drop_tpg(9), srpt_make_tport(9), srpt_drop_tport(9)
• srpt_init_module(9)

like… that's a whole roster and every single one of them made the list. obsessed. 🔥

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okay and finally the lil sign-off, because the page footer said so and we respect the footer: this one lives in ./drivers/infiniband/ulp/srpt, and the date on her birth certificate is October 2026 — so go forth, write that IOUnitInfo into that management datagram, and slay 💜🌈⭐