ib_dma_map_sgtable_attrs(9)

okay so bestie, welcome to the Kernel API Manual page for ib_dma_map_sgtable_attrs(9) — yes, that’s the manual name folded in right here at the top, no cap. This function is all about mapping a scatter/gather table to DMA addresses, and we’re gonna walk through the signature, the arguments, and the giant SEE ALSO friend group. 💖

🎀 NAME 🎀

ib_dma_map_sgtable_attrs — Map a scatter/gather table to DMA addresses. That’s the whole assignment, and it’s giving main character energy. ✨

🌸 SYNOPSIS 🌸

Here’s the exact signature, bestie — keep every character, because we do not edit kernel signatures in this group chat:

int ib_dma_map_sgtable_attrs (struct ib_device *dev , struct sg_table
       *sgt , enum dma_data_direction direction , unsigned long dma_attrs );

🦋 ARGUMENTS 🦋

• dev — the device for which the DMA addresses are to be created. This is the thing getting the addresses, periodt.
• sgt — the sg_table object describing the buffer. It’s literally the scatter/gather table in question, iykyk.
• direction — the direction of the DMA. Yes bestie, there is a direction, and it’s right there in the name.
• dma_attrs — optional DMA attributes for the map operation. Optional, so it’s not always bringing extra luggage. 💅

💫 SEE ALSO 💫

Kernel file ./include/rdma/ib_verbs.h — and then the SEE ALSO section is lowkey a whole crowd. Here’s every single one, no skips: 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_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_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).

okay that’s the whole page, bestie 🫶 this one lives in ./include/rdma, dated October 2026, and it’s the ib_dma_map_sgtable_attrs(9) page from the Kernel API Manual — bye 💅✨