srpt_ch_qp_rts(9)

✨ srpt_ch_qp_rts(9) ✨

okay so real talk — this one comes from the Kernel API Manual, section 9, and it is tiny. like, one-function-and-a-note tiny. but bestie, small pages still ate, so let's go 🫶

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💖 NAME 💖

srpt_ch_qp_rts — change the state of a channel to 'ready to send' (RTS)

like… that's the whole vibe. channel goes RTS. slay.

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🎀 SYNOPSIS 🎀

int srpt_ch_qp_rts (struct srpt_rdma_ch *ch , struct ib_qp *qp );

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🌸 ARGUMENTS 🌸

• ch — the channel of the queue pair. yes, the channel. the one the queue pair is chilling in 💅
• qp — the queue pair whose state we're changing. this is the one getting the glow-up ✨

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🦋 DESCRIPTION 🦋

so here's the whole plot: it returns zero upon success, and a negative value upon failure. that's it. that's the function. zero = iconic, negative = not iconic 😭

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💀 NOTE 💀

currently a struct ib_qp_attr takes 136 bytes on a 64-bit system. if this structure ever becomes larger, it might be necessary to allocate it dynamically instead of on the stack.

ngl this is the part where you pay attention — 136 bytes on a 64-bit system, and if that struct ever bloats past its current size, the stack allocation situation might need to become a dynamic allocation situation instead. not me worrying about stack space 🙈

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⭐ SEE ALSO ⭐

the kernel file itself, in all its glory:

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

and then the whole group chat of sibling functions — every single one of them, no cap:

• srpt_event_handler(9), srpt_srq_event(9), srpt_qp_event(9), srpt_set_ioc(9), srpt_get_class_port_info(9)
• srpt_get_iou(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_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)

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🌈 and that's the page!! love that for us. this lil gem lives over in ./drivers/infiniband/ulp/srpt and it was dated October 2026 — periodt, see u next time bestie 💜