ib_modify_qp_with_udata(9)

💅 NAME 💅

okay so bestie, this is ib_modify_qp_with_udata(9) from the Kernel API Manual, and its whole thing is: modifies the attributes for the specified QP. that's the name, that's the vibe, that's the assignment. periodt. ✨

✨ SYNOPSIS ✨

lowkey just look at the signature and keep it exact, no cap:

int ib_modify_qp_with_udata (struct ib_qp *qp , struct ib_qp_attr *attr
, int attr_mask , struct ib_udata *udata );

🎀 ARGUMENTS 🎀

four arguments, all main characters:

• qp — the QP to modify. iconic. 💅
• attr — on input, specifies the QP attributes to modify. on output, the current values of selected QP attributes are returned. it's giving input/output duality, and honestly? obsessed. 🔁
• attr_mask — a bit-mask used to specify which attributes of the QP are being modified. do not sleep on the mask, bestie, it's literally the vibe check for which attrs get touched. 🎭
• udata — a pointer to the user's input/output buffer information that's being modified. it returns 0 on success and returns the appropriate error code on error. 😭✅

🌈 SEE ALSO 🌈

the crossover episode is huge and it ate — every single one of these refs is invited:

• Kernel file: ./include/rdma/ib_verbs.h
• 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(9)
• ib_query_qp(9)
• ib_destroy_qp(9)
• ib_open_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)

mwah 💋 source/version: ./include/rdma • date: October 2026 • page: ib_modify_qp_with_udata(9) — go forth and modify those QP attributes, bestie 🫶✨