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MAD (Management Datagram) packets are widely used by various modules both in kernel and in user space for example the rdma_* API which is used to create and maintain "connection" layer on top of RDMA uses several types of MAD packets. For more information please refer to chapter 13.4 in Volume 1 Architecture Specification, Release 1.1 available here: https://www.infinibandta.org/ibta-specifications-download/ To support MAD packets the device uses an external utility (contrib/rdmacm-mux) to relay packets from and to the guest driver. Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Marcel Apfelbaum<marcel.apfelbaum@gmail.com> Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/*
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* RDMA device: Definitions of Backend Device structures
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*
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* Copyright (C) 2018 Oracle
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* Copyright (C) 2018 Red Hat Inc
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*
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* Authors:
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* Yuval Shaia <yuval.shaia@oracle.com>
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* Marcel Apfelbaum <marcel@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef RDMA_BACKEND_DEFS_H
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#define RDMA_BACKEND_DEFS_H
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#include "qemu/thread.h"
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#include "chardev/char-fe.h"
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#include <infiniband/verbs.h>
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typedef struct RdmaDeviceResources RdmaDeviceResources;
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typedef struct RdmaBackendThread {
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QemuThread thread;
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QemuMutex mutex;
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bool run; /* Set by thread manager to let thread know it should exit */
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bool is_running; /* Set by the thread to report its status */
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} RdmaBackendThread;
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typedef struct RecvMadList {
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QemuMutex lock;
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QList *list;
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} RecvMadList;
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typedef struct RdmaBackendDev {
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struct ibv_device_attr dev_attr;
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RdmaBackendThread comp_thread;
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union ibv_gid gid;
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PCIDevice *dev;
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RdmaDeviceResources *rdma_dev_res;
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struct ibv_device *ib_dev;
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struct ibv_context *context;
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struct ibv_comp_channel *channel;
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uint8_t port_num;
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uint8_t backend_gid_idx;
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RecvMadList recv_mads_list;
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CharBackend *mad_chr_be;
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} RdmaBackendDev;
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typedef struct RdmaBackendPD {
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struct ibv_pd *ibpd;
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} RdmaBackendPD;
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typedef struct RdmaBackendMR {
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struct ibv_pd *ibpd;
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struct ibv_mr *ibmr;
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} RdmaBackendMR;
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typedef struct RdmaBackendCQ {
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RdmaBackendDev *backend_dev;
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struct ibv_cq *ibcq;
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} RdmaBackendCQ;
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typedef struct RdmaBackendQP {
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struct ibv_pd *ibpd;
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struct ibv_qp *ibqp;
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} RdmaBackendQP;
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#endif
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