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![Steve Wise](/assets/img/avatar_default.png)
This patch adds support for the IB "base memory management extension" (BMME) and the equivalent iWARP operations (which the iWARP verbs mandates all devices must implement). The new operations are: - Allocate an ib_mr for use in fast register work requests. - Allocate/free a physical buffer lists for use in fast register work requests. This allows device drivers to allocate this memory as needed for use in posting send requests (eg via dma_alloc_coherent). - New send queue work requests: * send with remote invalidate * fast register memory region * local invalidate memory region * RDMA read with invalidate local memory region (iWARP only) Consumer interface details: - A new device capability flag IB_DEVICE_MEM_MGT_EXTENSIONS is added to indicate device support for these features. - New send work request opcodes IB_WR_FAST_REG_MR, IB_WR_LOCAL_INV, IB_WR_RDMA_READ_WITH_INV are added. - A new consumer API function, ib_alloc_mr() is added to allocate fast register memory regions. - New consumer API functions, ib_alloc_fast_reg_page_list() and ib_free_fast_reg_page_list() are added to allocate and free device-specific memory for fast registration page lists. - A new consumer API function, ib_update_fast_reg_key(), is added to allow the key portion of the R_Key and L_Key of a fast registration MR to be updated. Consumers call this if desired before posting a IB_WR_FAST_REG_MR work request. Consumers can use this as follows: - MR is allocated with ib_alloc_mr(). - Page list memory is allocated with ib_alloc_fast_reg_page_list(). - MR R_Key/L_Key "key" field is updated with ib_update_fast_reg_key(). - MR made VALID and bound to a specific page list via ib_post_send(IB_WR_FAST_REG_MR) - MR made INVALID via ib_post_send(IB_WR_LOCAL_INV), ib_post_send(IB_WR_RDMA_READ_WITH_INV) or an incoming send with invalidate operation. - MR is deallocated with ib_dereg_mr() - page lists dealloced via ib_free_fast_reg_page_list(). Applications can allocate a fast register MR once, and then can repeatedly bind the MR to different physical block lists (PBLs) via posting work requests to a send queue (SQ). For each outstanding MR-to-PBL binding in the SQ pipe, a fast_reg_page_list needs to be allocated (the fast_reg_page_list is owned by the low-level driver from the consumer posting a work request until the request completes). Thus pipelining can be achieved while still allowing device-specific page_list processing. The 32-bit fast register memory key/STag is composed of a 24-bit index and an 8-bit key. The application can change the key each time it fast registers thus allowing more control over the peer's use of the key/STag (ie it can effectively be changed each time the rkey is rebound to a page list). Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
689 lines
13 KiB
C
689 lines
13 KiB
C
/*
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* Copyright (c) 2005 Topspin Communications. All rights reserved.
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* Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
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* Copyright (c) 2005 PathScale, Inc. All rights reserved.
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* Copyright (c) 2006 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef IB_USER_VERBS_H
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#define IB_USER_VERBS_H
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#include <linux/types.h>
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/*
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* Increment this value if any changes that break userspace ABI
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* compatibility are made.
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*/
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#define IB_USER_VERBS_ABI_VERSION 6
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enum {
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IB_USER_VERBS_CMD_GET_CONTEXT,
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IB_USER_VERBS_CMD_QUERY_DEVICE,
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IB_USER_VERBS_CMD_QUERY_PORT,
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IB_USER_VERBS_CMD_ALLOC_PD,
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IB_USER_VERBS_CMD_DEALLOC_PD,
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IB_USER_VERBS_CMD_CREATE_AH,
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IB_USER_VERBS_CMD_MODIFY_AH,
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IB_USER_VERBS_CMD_QUERY_AH,
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IB_USER_VERBS_CMD_DESTROY_AH,
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IB_USER_VERBS_CMD_REG_MR,
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IB_USER_VERBS_CMD_REG_SMR,
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IB_USER_VERBS_CMD_REREG_MR,
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IB_USER_VERBS_CMD_QUERY_MR,
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IB_USER_VERBS_CMD_DEREG_MR,
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IB_USER_VERBS_CMD_ALLOC_MW,
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IB_USER_VERBS_CMD_BIND_MW,
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IB_USER_VERBS_CMD_DEALLOC_MW,
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IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL,
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IB_USER_VERBS_CMD_CREATE_CQ,
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IB_USER_VERBS_CMD_RESIZE_CQ,
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IB_USER_VERBS_CMD_DESTROY_CQ,
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IB_USER_VERBS_CMD_POLL_CQ,
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IB_USER_VERBS_CMD_PEEK_CQ,
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IB_USER_VERBS_CMD_REQ_NOTIFY_CQ,
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IB_USER_VERBS_CMD_CREATE_QP,
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IB_USER_VERBS_CMD_QUERY_QP,
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IB_USER_VERBS_CMD_MODIFY_QP,
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IB_USER_VERBS_CMD_DESTROY_QP,
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IB_USER_VERBS_CMD_POST_SEND,
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IB_USER_VERBS_CMD_POST_RECV,
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IB_USER_VERBS_CMD_ATTACH_MCAST,
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IB_USER_VERBS_CMD_DETACH_MCAST,
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IB_USER_VERBS_CMD_CREATE_SRQ,
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IB_USER_VERBS_CMD_MODIFY_SRQ,
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IB_USER_VERBS_CMD_QUERY_SRQ,
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IB_USER_VERBS_CMD_DESTROY_SRQ,
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IB_USER_VERBS_CMD_POST_SRQ_RECV
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};
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/*
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* Make sure that all structs defined in this file remain laid out so
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* that they pack the same way on 32-bit and 64-bit architectures (to
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* avoid incompatibility between 32-bit userspace and 64-bit kernels).
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* Specifically:
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* - Do not use pointer types -- pass pointers in __u64 instead.
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* - Make sure that any structure larger than 4 bytes is padded to a
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* multiple of 8 bytes. Otherwise the structure size will be
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* different between 32-bit and 64-bit architectures.
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*/
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struct ib_uverbs_async_event_desc {
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__u64 element;
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__u32 event_type; /* enum ib_event_type */
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__u32 reserved;
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};
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struct ib_uverbs_comp_event_desc {
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__u64 cq_handle;
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};
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/*
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* All commands from userspace should start with a __u32 command field
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* followed by __u16 in_words and out_words fields (which give the
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* length of the command block and response buffer if any in 32-bit
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* words). The kernel driver will read these fields first and read
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* the rest of the command struct based on these value.
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*/
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struct ib_uverbs_cmd_hdr {
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__u32 command;
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__u16 in_words;
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__u16 out_words;
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};
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struct ib_uverbs_get_context {
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__u64 response;
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__u64 driver_data[0];
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};
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struct ib_uverbs_get_context_resp {
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__u32 async_fd;
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__u32 num_comp_vectors;
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};
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struct ib_uverbs_query_device {
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__u64 response;
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__u64 driver_data[0];
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};
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struct ib_uverbs_query_device_resp {
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__u64 fw_ver;
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__be64 node_guid;
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__be64 sys_image_guid;
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__u64 max_mr_size;
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__u64 page_size_cap;
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__u32 vendor_id;
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__u32 vendor_part_id;
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__u32 hw_ver;
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__u32 max_qp;
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__u32 max_qp_wr;
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__u32 device_cap_flags;
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__u32 max_sge;
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__u32 max_sge_rd;
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__u32 max_cq;
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__u32 max_cqe;
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__u32 max_mr;
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__u32 max_pd;
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__u32 max_qp_rd_atom;
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__u32 max_ee_rd_atom;
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__u32 max_res_rd_atom;
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__u32 max_qp_init_rd_atom;
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__u32 max_ee_init_rd_atom;
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__u32 atomic_cap;
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__u32 max_ee;
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__u32 max_rdd;
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__u32 max_mw;
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__u32 max_raw_ipv6_qp;
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__u32 max_raw_ethy_qp;
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__u32 max_mcast_grp;
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__u32 max_mcast_qp_attach;
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__u32 max_total_mcast_qp_attach;
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__u32 max_ah;
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__u32 max_fmr;
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__u32 max_map_per_fmr;
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__u32 max_srq;
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__u32 max_srq_wr;
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__u32 max_srq_sge;
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__u16 max_pkeys;
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__u8 local_ca_ack_delay;
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__u8 phys_port_cnt;
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__u8 reserved[4];
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};
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struct ib_uverbs_query_port {
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__u64 response;
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__u8 port_num;
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__u8 reserved[7];
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__u64 driver_data[0];
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};
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struct ib_uverbs_query_port_resp {
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__u32 port_cap_flags;
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__u32 max_msg_sz;
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__u32 bad_pkey_cntr;
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__u32 qkey_viol_cntr;
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__u32 gid_tbl_len;
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__u16 pkey_tbl_len;
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__u16 lid;
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__u16 sm_lid;
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__u8 state;
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__u8 max_mtu;
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__u8 active_mtu;
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__u8 lmc;
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__u8 max_vl_num;
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__u8 sm_sl;
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__u8 subnet_timeout;
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__u8 init_type_reply;
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__u8 active_width;
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__u8 active_speed;
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__u8 phys_state;
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__u8 reserved[3];
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};
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struct ib_uverbs_alloc_pd {
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__u64 response;
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__u64 driver_data[0];
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};
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struct ib_uverbs_alloc_pd_resp {
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__u32 pd_handle;
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};
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struct ib_uverbs_dealloc_pd {
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__u32 pd_handle;
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};
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struct ib_uverbs_reg_mr {
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__u64 response;
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__u64 start;
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__u64 length;
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__u64 hca_va;
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__u32 pd_handle;
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__u32 access_flags;
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__u64 driver_data[0];
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};
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struct ib_uverbs_reg_mr_resp {
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__u32 mr_handle;
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__u32 lkey;
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__u32 rkey;
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};
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struct ib_uverbs_dereg_mr {
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__u32 mr_handle;
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};
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struct ib_uverbs_create_comp_channel {
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__u64 response;
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};
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struct ib_uverbs_create_comp_channel_resp {
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__u32 fd;
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};
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struct ib_uverbs_create_cq {
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__u64 response;
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__u64 user_handle;
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__u32 cqe;
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__u32 comp_vector;
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__s32 comp_channel;
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__u32 reserved;
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__u64 driver_data[0];
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};
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struct ib_uverbs_create_cq_resp {
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__u32 cq_handle;
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__u32 cqe;
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};
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struct ib_uverbs_resize_cq {
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__u64 response;
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__u32 cq_handle;
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__u32 cqe;
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__u64 driver_data[0];
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};
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struct ib_uverbs_resize_cq_resp {
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__u32 cqe;
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__u32 reserved;
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__u64 driver_data[0];
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};
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struct ib_uverbs_poll_cq {
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__u64 response;
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__u32 cq_handle;
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__u32 ne;
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};
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struct ib_uverbs_wc {
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__u64 wr_id;
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__u32 status;
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__u32 opcode;
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__u32 vendor_err;
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__u32 byte_len;
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union {
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__u32 imm_data;
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__u32 invalidate_rkey;
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} ex;
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__u32 qp_num;
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__u32 src_qp;
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__u32 wc_flags;
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__u16 pkey_index;
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__u16 slid;
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__u8 sl;
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__u8 dlid_path_bits;
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__u8 port_num;
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__u8 reserved;
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};
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struct ib_uverbs_poll_cq_resp {
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__u32 count;
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__u32 reserved;
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struct ib_uverbs_wc wc[0];
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};
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struct ib_uverbs_req_notify_cq {
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__u32 cq_handle;
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__u32 solicited_only;
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};
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struct ib_uverbs_destroy_cq {
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__u64 response;
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__u32 cq_handle;
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__u32 reserved;
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};
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struct ib_uverbs_destroy_cq_resp {
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__u32 comp_events_reported;
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__u32 async_events_reported;
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};
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struct ib_uverbs_global_route {
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__u8 dgid[16];
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__u32 flow_label;
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__u8 sgid_index;
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__u8 hop_limit;
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__u8 traffic_class;
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__u8 reserved;
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};
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struct ib_uverbs_ah_attr {
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struct ib_uverbs_global_route grh;
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__u16 dlid;
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__u8 sl;
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__u8 src_path_bits;
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__u8 static_rate;
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__u8 is_global;
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__u8 port_num;
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__u8 reserved;
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};
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struct ib_uverbs_qp_attr {
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__u32 qp_attr_mask;
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__u32 qp_state;
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__u32 cur_qp_state;
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__u32 path_mtu;
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__u32 path_mig_state;
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__u32 qkey;
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__u32 rq_psn;
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__u32 sq_psn;
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__u32 dest_qp_num;
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__u32 qp_access_flags;
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struct ib_uverbs_ah_attr ah_attr;
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struct ib_uverbs_ah_attr alt_ah_attr;
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/* ib_qp_cap */
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__u32 max_send_wr;
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__u32 max_recv_wr;
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__u32 max_send_sge;
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__u32 max_recv_sge;
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__u32 max_inline_data;
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__u16 pkey_index;
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__u16 alt_pkey_index;
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__u8 en_sqd_async_notify;
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__u8 sq_draining;
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__u8 max_rd_atomic;
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__u8 max_dest_rd_atomic;
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__u8 min_rnr_timer;
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__u8 port_num;
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__u8 timeout;
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__u8 retry_cnt;
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__u8 rnr_retry;
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__u8 alt_port_num;
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__u8 alt_timeout;
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__u8 reserved[5];
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};
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struct ib_uverbs_create_qp {
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__u64 response;
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__u64 user_handle;
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__u32 pd_handle;
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__u32 send_cq_handle;
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__u32 recv_cq_handle;
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__u32 srq_handle;
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__u32 max_send_wr;
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__u32 max_recv_wr;
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__u32 max_send_sge;
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__u32 max_recv_sge;
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__u32 max_inline_data;
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__u8 sq_sig_all;
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__u8 qp_type;
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__u8 is_srq;
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__u8 reserved;
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__u64 driver_data[0];
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};
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struct ib_uverbs_create_qp_resp {
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__u32 qp_handle;
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__u32 qpn;
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__u32 max_send_wr;
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__u32 max_recv_wr;
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__u32 max_send_sge;
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__u32 max_recv_sge;
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__u32 max_inline_data;
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__u32 reserved;
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};
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/*
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* This struct needs to remain a multiple of 8 bytes to keep the
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* alignment of the modify QP parameters.
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*/
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struct ib_uverbs_qp_dest {
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__u8 dgid[16];
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__u32 flow_label;
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__u16 dlid;
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__u16 reserved;
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__u8 sgid_index;
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__u8 hop_limit;
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__u8 traffic_class;
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__u8 sl;
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__u8 src_path_bits;
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__u8 static_rate;
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__u8 is_global;
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__u8 port_num;
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};
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struct ib_uverbs_query_qp {
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__u64 response;
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__u32 qp_handle;
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__u32 attr_mask;
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__u64 driver_data[0];
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};
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struct ib_uverbs_query_qp_resp {
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struct ib_uverbs_qp_dest dest;
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struct ib_uverbs_qp_dest alt_dest;
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__u32 max_send_wr;
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__u32 max_recv_wr;
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__u32 max_send_sge;
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__u32 max_recv_sge;
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__u32 max_inline_data;
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__u32 qkey;
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__u32 rq_psn;
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__u32 sq_psn;
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__u32 dest_qp_num;
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__u32 qp_access_flags;
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__u16 pkey_index;
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__u16 alt_pkey_index;
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__u8 qp_state;
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__u8 cur_qp_state;
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__u8 path_mtu;
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__u8 path_mig_state;
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__u8 sq_draining;
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__u8 max_rd_atomic;
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__u8 max_dest_rd_atomic;
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__u8 min_rnr_timer;
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__u8 port_num;
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__u8 timeout;
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__u8 retry_cnt;
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__u8 rnr_retry;
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__u8 alt_port_num;
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__u8 alt_timeout;
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__u8 sq_sig_all;
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__u8 reserved[5];
|
|
__u64 driver_data[0];
|
|
};
|
|
|
|
struct ib_uverbs_modify_qp {
|
|
struct ib_uverbs_qp_dest dest;
|
|
struct ib_uverbs_qp_dest alt_dest;
|
|
__u32 qp_handle;
|
|
__u32 attr_mask;
|
|
__u32 qkey;
|
|
__u32 rq_psn;
|
|
__u32 sq_psn;
|
|
__u32 dest_qp_num;
|
|
__u32 qp_access_flags;
|
|
__u16 pkey_index;
|
|
__u16 alt_pkey_index;
|
|
__u8 qp_state;
|
|
__u8 cur_qp_state;
|
|
__u8 path_mtu;
|
|
__u8 path_mig_state;
|
|
__u8 en_sqd_async_notify;
|
|
__u8 max_rd_atomic;
|
|
__u8 max_dest_rd_atomic;
|
|
__u8 min_rnr_timer;
|
|
__u8 port_num;
|
|
__u8 timeout;
|
|
__u8 retry_cnt;
|
|
__u8 rnr_retry;
|
|
__u8 alt_port_num;
|
|
__u8 alt_timeout;
|
|
__u8 reserved[2];
|
|
__u64 driver_data[0];
|
|
};
|
|
|
|
struct ib_uverbs_modify_qp_resp {
|
|
};
|
|
|
|
struct ib_uverbs_destroy_qp {
|
|
__u64 response;
|
|
__u32 qp_handle;
|
|
__u32 reserved;
|
|
};
|
|
|
|
struct ib_uverbs_destroy_qp_resp {
|
|
__u32 events_reported;
|
|
};
|
|
|
|
/*
|
|
* The ib_uverbs_sge structure isn't used anywhere, since we assume
|
|
* the ib_sge structure is packed the same way on 32-bit and 64-bit
|
|
* architectures in both kernel and user space. It's just here to
|
|
* document the ABI.
|
|
*/
|
|
struct ib_uverbs_sge {
|
|
__u64 addr;
|
|
__u32 length;
|
|
__u32 lkey;
|
|
};
|
|
|
|
struct ib_uverbs_send_wr {
|
|
__u64 wr_id;
|
|
__u32 num_sge;
|
|
__u32 opcode;
|
|
__u32 send_flags;
|
|
union {
|
|
__u32 imm_data;
|
|
__u32 invalidate_rkey;
|
|
} ex;
|
|
union {
|
|
struct {
|
|
__u64 remote_addr;
|
|
__u32 rkey;
|
|
__u32 reserved;
|
|
} rdma;
|
|
struct {
|
|
__u64 remote_addr;
|
|
__u64 compare_add;
|
|
__u64 swap;
|
|
__u32 rkey;
|
|
__u32 reserved;
|
|
} atomic;
|
|
struct {
|
|
__u32 ah;
|
|
__u32 remote_qpn;
|
|
__u32 remote_qkey;
|
|
__u32 reserved;
|
|
} ud;
|
|
} wr;
|
|
};
|
|
|
|
struct ib_uverbs_post_send {
|
|
__u64 response;
|
|
__u32 qp_handle;
|
|
__u32 wr_count;
|
|
__u32 sge_count;
|
|
__u32 wqe_size;
|
|
struct ib_uverbs_send_wr send_wr[0];
|
|
};
|
|
|
|
struct ib_uverbs_post_send_resp {
|
|
__u32 bad_wr;
|
|
};
|
|
|
|
struct ib_uverbs_recv_wr {
|
|
__u64 wr_id;
|
|
__u32 num_sge;
|
|
__u32 reserved;
|
|
};
|
|
|
|
struct ib_uverbs_post_recv {
|
|
__u64 response;
|
|
__u32 qp_handle;
|
|
__u32 wr_count;
|
|
__u32 sge_count;
|
|
__u32 wqe_size;
|
|
struct ib_uverbs_recv_wr recv_wr[0];
|
|
};
|
|
|
|
struct ib_uverbs_post_recv_resp {
|
|
__u32 bad_wr;
|
|
};
|
|
|
|
struct ib_uverbs_post_srq_recv {
|
|
__u64 response;
|
|
__u32 srq_handle;
|
|
__u32 wr_count;
|
|
__u32 sge_count;
|
|
__u32 wqe_size;
|
|
struct ib_uverbs_recv_wr recv[0];
|
|
};
|
|
|
|
struct ib_uverbs_post_srq_recv_resp {
|
|
__u32 bad_wr;
|
|
};
|
|
|
|
struct ib_uverbs_create_ah {
|
|
__u64 response;
|
|
__u64 user_handle;
|
|
__u32 pd_handle;
|
|
__u32 reserved;
|
|
struct ib_uverbs_ah_attr attr;
|
|
};
|
|
|
|
struct ib_uverbs_create_ah_resp {
|
|
__u32 ah_handle;
|
|
};
|
|
|
|
struct ib_uverbs_destroy_ah {
|
|
__u32 ah_handle;
|
|
};
|
|
|
|
struct ib_uverbs_attach_mcast {
|
|
__u8 gid[16];
|
|
__u32 qp_handle;
|
|
__u16 mlid;
|
|
__u16 reserved;
|
|
__u64 driver_data[0];
|
|
};
|
|
|
|
struct ib_uverbs_detach_mcast {
|
|
__u8 gid[16];
|
|
__u32 qp_handle;
|
|
__u16 mlid;
|
|
__u16 reserved;
|
|
__u64 driver_data[0];
|
|
};
|
|
|
|
struct ib_uverbs_create_srq {
|
|
__u64 response;
|
|
__u64 user_handle;
|
|
__u32 pd_handle;
|
|
__u32 max_wr;
|
|
__u32 max_sge;
|
|
__u32 srq_limit;
|
|
__u64 driver_data[0];
|
|
};
|
|
|
|
struct ib_uverbs_create_srq_resp {
|
|
__u32 srq_handle;
|
|
__u32 max_wr;
|
|
__u32 max_sge;
|
|
__u32 reserved;
|
|
};
|
|
|
|
struct ib_uverbs_modify_srq {
|
|
__u32 srq_handle;
|
|
__u32 attr_mask;
|
|
__u32 max_wr;
|
|
__u32 srq_limit;
|
|
__u64 driver_data[0];
|
|
};
|
|
|
|
struct ib_uverbs_query_srq {
|
|
__u64 response;
|
|
__u32 srq_handle;
|
|
__u32 reserved;
|
|
__u64 driver_data[0];
|
|
};
|
|
|
|
struct ib_uverbs_query_srq_resp {
|
|
__u32 max_wr;
|
|
__u32 max_sge;
|
|
__u32 srq_limit;
|
|
__u32 reserved;
|
|
};
|
|
|
|
struct ib_uverbs_destroy_srq {
|
|
__u64 response;
|
|
__u32 srq_handle;
|
|
__u32 reserved;
|
|
};
|
|
|
|
struct ib_uverbs_destroy_srq_resp {
|
|
__u32 events_reported;
|
|
};
|
|
|
|
#endif /* IB_USER_VERBS_H */
|