2446304dd6
Pass the number of WQEs for the send queue and their size from userspace to the kernel to avoid having to keep the QP size calculations in sync between the kernel driver and libmlx4. This fixes a bug seen with the current mlx4_ib driver and current libmlx4 caused by a difference in the calculated sizes for SQ WQEs. Also, this gives more flexibility for userspace to experiment with using multiple WQE BBs for a single SQ WQE. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/*
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* Copyright (c) 2007 Cisco Systems, Inc. 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 MLX4_IB_USER_H
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#define MLX4_IB_USER_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 MLX4_IB_UVERBS_ABI_VERSION 2
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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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* In particular do not use pointer types -- pass pointers in __u64
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* instead.
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*/
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struct mlx4_ib_alloc_ucontext_resp {
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__u32 qp_tab_size;
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__u16 bf_reg_size;
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__u16 bf_regs_per_page;
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};
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struct mlx4_ib_alloc_pd_resp {
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__u32 pdn;
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__u32 reserved;
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};
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struct mlx4_ib_create_cq {
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__u64 buf_addr;
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__u64 db_addr;
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};
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struct mlx4_ib_create_cq_resp {
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__u32 cqn;
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__u32 reserved;
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};
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struct mlx4_ib_resize_cq {
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__u64 buf_addr;
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};
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struct mlx4_ib_create_srq {
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__u64 buf_addr;
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__u64 db_addr;
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};
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struct mlx4_ib_create_srq_resp {
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__u32 srqn;
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__u32 reserved;
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};
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struct mlx4_ib_create_qp {
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__u64 buf_addr;
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__u64 db_addr;
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__u8 log_sq_bb_count;
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__u8 log_sq_stride;
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__u8 reserved[6];
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};
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#endif /* MLX4_IB_USER_H */
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