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https://github.com/projectacrn/acrn-hypervisor.git
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c88971fd62
A monitor component will be added to acrn-dm, which crteats socket, bind and listening at /run/acrn/vmname. Acrnctl & acrnd could conn -ect to the socket for communication, using defined message, in include/monitor_msg.h For each defined message, a message handler callback could be registered via monitor_add_msg_handler(). On received of a defined message, a certain call back will be called. Each callback can only see the message sender's socket-fd. When acrn-dm want report something, not triggered by incoming message it can send broadcast message, use monitor_broadcast(). Acked-by: Eddie Dong <eddie.dong@intel.com> Reviewed-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com> Reviewed-by: Zhao Yakui <yakui.zhao@intel.com> Reviewed-by: Yin, Fengwei <fengwei.yin@intel.com> Signed-off-by: Tao, Yuhong <yuhong.tao@intel.com>
108 lines
3.7 KiB
C
108 lines
3.7 KiB
C
/*
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* Project Acrn
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* Acrn-dm-monitor
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*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* Author: TaoYuhong <yuhong.tao@intel.com>
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*/
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/* this file will be shared, by anyone who want talk to acrn-dm */
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#ifndef MONITOR_MSG_H
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#define MONITOR_MSG_H
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enum msgid {
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REQ_STARTALL = 0, /* SOS lifecycle service -> VM Mngr */
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REQ_PAUSEALL, /* SOS lifecycle service -> VM Mngr */
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REQ_START, /* VM Mngr -> ACRN-DM(vm) */
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REQ_STOP, /* VM Mngr -> ACRN-DM(vm) */
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REQ_PAUSE,
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REQ_RESUME, /* VM Mngr -> ACRN-DM(vm) */
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REQ_RESET,
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REQ_QUERY,
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NTF_ALLSTOPPED, /* VM Mngr -> SOS lifecycle service */
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NTF_ALLPAUSED, /* VM Mngr -> SOS lifecycle service */
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NTF_STARTED, /* ACRN-DM -> VM Mngr */
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NTF_STOPPED, /* ACRN-DM -> VM Mngr */
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NTF_PAUSED, /* ACRN-DM -> VM Mngr */
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NTF_RESUMED, /* ACRN-DM -> VM Mngr */
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MSG_STR,
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MSG_HANDSHAKE, /* handshake */
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MSGID_MAX
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};
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#define VMM_MSG_MAGIC 0x67736d206d6d76 /* that is char[8] "vmm msg", on X86 */
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#define VMM_MSG_MAX_LEN 4096
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struct vmm_msg {
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unsigned long long magic; /* Make sure you get a vmm_msg */
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unsigned int msgid;
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unsigned long timestamp;
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size_t len; /* vmm_msg + payload size */
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char payload[0];
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};
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/* practical messages, and helpers
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* each message defined in msgid should have its own data structure,
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* and shared by acrn-dm and vm-mngr. So that such that message data
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* structure can be recognized by both sides of the communication
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*/
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/* For test, generate a message who carry a string
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* eg., VMM_MSG_STR(hello_msg, "Hello\n") will create hello_msg,
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* then you can write(sock_fd, hello_msg, sizeof(hello_msg))
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*/
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#define VMM_MSG_STR(var, str) \
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struct vmm_msg_##var { \
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struct vmm_msg vmsg; \
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char raw[sizeof(str)]; \
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} var = { \
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.vmsg = { \
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.magic = VMM_MSG_MAGIC, \
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.msgid = MSG_STR, \
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.len = sizeof(struct vmm_msg_##var), \
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}, \
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.raw = str, \
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}
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#define CLIENT_NAME_LEN 16
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struct vmm_msg_handshake {
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struct vmm_msg vmsg;
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char name[CLIENT_NAME_LEN]; /* name should be a string, end with '\0' */
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/* can be "acrnd", "vm-mngr" or "acrnctl" */
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int broadcast; /* if set, allow acrn-dm send broadcast */
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/* message to such client */
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};
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#endif
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