Edit File: rdmavt_cq.h
#ifndef DEF_RDMAVT_INCCQ_H #define DEF_RDMAVT_INCCQ_H /* * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2016 - 2018 Intel Corporation. * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * BSD LICENSE * * Copyright(c) 2015 Intel Corporation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * - Neither the name of Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include <linux/kthread.h> #include <rdma/ib_user_verbs.h> /* * Define an ib_cq_notify value that is not valid so we know when CQ * notifications are armed. */ #define RVT_CQ_NONE (IB_CQ_NEXT_COMP + 1) /* * This structure is used to contain the head pointer, tail pointer, * and completion queue entries as a single memory allocation so * it can be mmap'ed into user space. */ struct rvt_cq_wc { u32 head; /* index of next entry to fill */ u32 tail; /* index of next ib_poll_cq() entry */ union { /* these are actually size ibcq.cqe + 1 */ struct ib_uverbs_wc uqueue[0]; struct ib_wc kqueue[0]; }; }; /* * The completion queue structure. */ struct rvt_cq { struct ib_cq ibcq; struct work_struct comptask; spinlock_t lock; /* protect changes in this struct */ u8 notify; u8 triggered; int comp_vector_cpu; struct rvt_dev_info *rdi; struct rvt_cq_wc *queue; struct rvt_mmap_info *ip; }; static inline struct rvt_cq *ibcq_to_rvtcq(struct ib_cq *ibcq) { return container_of(ibcq, struct rvt_cq, ibcq); } void rvt_cq_enter(struct rvt_cq *cq, struct ib_wc *entry, bool solicited); #endif /* DEF_RDMAVT_INCCQH */