ib_open_qp(9)
π ib_open_qp(9) β or, how to slide into an existing QP's DMs β¨
Okay bestie, welcome to the Kernel API Manual, section 9. Yes we're in the kernel section, yes it's giving serious main character energy, and yes this page is short β but it's iconic short, not lazy short. Let's go π«Ά
β¨ NAME β¨
ib_open_qp β literally just obtain a reference to an existing sharable QP. That's the whole vibe. No cap.
πΈ SYNOPSIS πΈ
struct ib_qp * ib_open_qp (struct ib_xrcd *xrcd , struct ib_qp_open_attr
*qp_open_attr );
Two arguments, one struct pointer back. Simple. Clean. Ate. π
π ARGUMENTS π
xrcdβ the XRC domain. Like, this is the neighborhood your QP lives in π‘qp_open_attrβ the attributes identifying the QP to open. Basically the little ID card you hand over so the kernel knows which QP you're talking about πͺͺ
π¦ DESCRIPTION π¦
Returns a reference to a sharable QP.
That's it. That's the description. Short king behavior, honestly π It gives you back a reference β you're now officially entangled with that QP, iykyk π
π SEE ALSO π
Kernel file ./include/rdma/ib_verbs.h β and then, bestie, the guest list is long. Like, red-carpet-long. Enjoy the parade π
struct rdma_stat_desc(9)struct rdma_hw_stats(9)ib_rate_to_mult(9)ib_rate_to_mbps(9)ib_port_attr_to_speed_info(9)enum ib_mr_type(9)struct ib_mr_status(9)mult_to_ib_rate(9)struct ib_udata(9)struct rdma_netdev(9)struct ib_device_ops(9)ib_get_client_data(9)ib_modify_qp_is_ok(9)rdma_cap_ib_switch(9)rdma_start_port(9)rdma_for_each_port(9)rdma_end_port(9)rdma_cap_ib_mad(9)rdma_cap_opa_mad(9)rdma_cap_ib_smi(9)rdma_cap_ib_cm(9)rdma_cap_iw_cm(9)rdma_cap_ib_sa(9)rdma_cap_ib_mcast(9)rdma_cap_af_ib(9)rdma_cap_eth_ah(9)rdma_cap_opa_ah(9)rdma_max_mad_size(9)rdma_cap_roce_gid_table(9)rdma_core_cap_opa_port(9)rdma_mtu_enum_to_int(9)rdma_mtu_from_attr(9)ib_alloc_pd(9)ib_dealloc_pd(9)rdma_create_ah(9)rdma_create_user_ah(9)ib_get_gids_from_rdma_hdr(9)ib_get_rdma_header_version(9)ib_init_ah_attr_from_wc(9)ib_create_ah_from_wc(9)rdma_modify_ah(9)rdma_query_ah(9)rdma_destroy_ah_user(9)rdma_destroy_ah(9)ib_modify_srq(9)ib_query_srq(9)ib_destroy_srq_user(9)ib_destroy_srq(9)ib_post_srq_recv(9)ib_create_qp(9)ib_modify_qp_with_udata(9)ib_modify_qp(9)ib_query_qp(9)ib_destroy_qp(9)ib_close_qp(9)ib_post_send(9)ib_post_recv(9)ib_alloc_cq_any(9)rdma_set_cq_moderation(9)ib_destroy_cq_user(9)ib_destroy_cq(9)ib_poll_cq(9)ib_req_notify_cq(9)ib_virt_dma_to_ptr(9)ib_virt_dma_to_page(9)ib_dma_mapping_error(9)ib_dma_map_single(9)ib_dma_unmap_single(9)ib_dma_map_page(9)ib_dma_unmap_page(9)ib_dma_map_bvec(9)ib_dma_unmap_bvec(9)ib_dma_map_sgtable_attrs(9)ib_dma_map_sg(9)ib_dma_unmap_sg(9)ib_dma_max_seg_size(9)ib_dma_sync_single_for_cpu(9)ib_dma_sync_single_for_device(9)ib_dereg_mr_user(9)ib_dereg_mr(9)ib_update_fast_reg_key(9)ib_inc_rkey(9)ib_attach_mcast(9)ib_detach_mcast(9)ib_check_mr_status(9)ib_device_try_get(9)rdma_ah_find_type(9)ib_lid_cpu16(9)ib_lid_be16(9)rdma_roce_rescan_device(9)rdma_device_to_ibdev(9)ibdev_to_node(9)rdma_device_to_drv_device(9)rdma_flow_label_to_udp_sport(9)rdma_calc_flow_label(9)rdma_get_udp_sport(9)
And that's the whole page, bestie β short, sweet, and fully booked with cross-references π This lil' cutie comes to you courtesy of ./include/rdma, dated October 2026. Sending you off with a kiss, a curtsy, and a struct ib_qp * π§β¨
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms