1/* 2 * Copyright (c) 2005 Topspin Communications. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33#ifndef KERN_ABI_H 34#define KERN_ABI_H 35 36#include <linux/types.h> 37 38/* 39 * Increment this value if any changes that break userspace ABI 40 * compatibility are made. 41 */ 42#define IB_USER_VERBS_ABI_VERSION 1 43 44enum { 45 IB_USER_VERBS_CMD_GET_CONTEXT, 46 IB_USER_VERBS_CMD_GET_EVENT_FDS, 47 IB_USER_VERBS_CMD_ALLOC_PD, 48 IB_USER_VERBS_CMD_DEALLOC_PD, 49 IB_USER_VERBS_CMD_REG_MR, 50 IB_USER_VERBS_CMD_DEREG_MR 51}; 52 53/* 54 * Make sure that all structs defined in this file remain laid out so 55 * that they pack the same way on 32-bit and 64-bit architectures (to 56 * avoid incompatibility between 32-bit userspace and 64-bit kernels). 57 * In particular do not use pointer types -- pass pointers in __u64 58 * instead. 59 */ 60 61struct ibv_kern_async_event { 62 __u32 event_type; 63 __u32 element; 64}; 65 66struct ibv_comp_event { 67 __u32 cq_handle; 68}; 69 70/* 71 * All commands from userspace should start with a __u32 command field 72 * followed by __u16 in_words and out_words fields (which give the 73 * length of the command block and response buffer if any in 32-bit 74 * words). The kernel driver will read these fields first and read 75 * the rest of the command struct based on these value. 76 */ 77 78struct ibv_get_context { 79 __u32 command; 80 __u16 in_words; 81 __u16 out_words; 82 __u64 response; 83}; 84 85struct ibv_get_context_resp { 86 __u32 num_cq_events; 87}; 88 89struct ibv_get_event_fds { 90 __u32 command; 91 __u16 in_words; 92 __u16 out_words; 93 __u64 response; 94}; 95 96struct ibv_get_event_fds_resp { 97 __u32 async_fd; 98 __u32 cq_fd[1]; 99}; 100 101#endif /* KERN_ABI_H */ 102