c8e2b6b4d7
The 'reconnect' option only allows to specify the time in seconds, which is way too long for certain workflows. We have a lightweight disk backend server, which takes about 20ms to live update, but due to this limitation in QEMU, previously the guest disk controller would hang for one second because it would take this long for QEMU to reinitialize the socket connection. Introduce a new option called 'reconnect-ms', which is the same as 'reconnect', except the value is treated as milliseconds. These are mutually exclusive and specifying both results in an error. 'reconnect' is also deprecated by this commit to make it possible to remove it in the future as to not keep two options that control the same thing. Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Acked-by: Peter Krempa <pkrempa@redhat.com> Signed-off-by: Daniil Tatianin <d-tatianin@yandex-team.ru> Acked-by: Markus Armbruster <armbru@redhat.com> Tested-by: Markus Armbruster <armbru@redhat.com> Message-ID: <20240913094604.269135-1-d-tatianin@yandex-team.ru>
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef CHAR_SOCKET_H
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#define CHAR_SOCKET_H
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#include "io/channel-socket.h"
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#include "io/channel-tls.h"
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#include "io/net-listener.h"
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#include "chardev/char.h"
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#include "qom/object.h"
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#define TCP_MAX_FDS 16
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typedef struct {
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char buf[21];
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size_t buflen;
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} TCPChardevTelnetInit;
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typedef enum {
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TCP_CHARDEV_STATE_DISCONNECTED,
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TCP_CHARDEV_STATE_CONNECTING,
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TCP_CHARDEV_STATE_CONNECTED,
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} TCPChardevState;
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typedef ChardevClass SocketChardevClass;
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struct SocketChardev {
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Chardev parent;
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QIOChannel *ioc; /* Client I/O channel */
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QIOChannelSocket *sioc; /* Client master channel */
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QIONetListener *listener;
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GSource *hup_source;
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QCryptoTLSCreds *tls_creds;
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char *tls_authz;
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TCPChardevState state;
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int max_size;
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int do_telnetopt;
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int do_nodelay;
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int *read_msgfds;
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size_t read_msgfds_num;
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int *write_msgfds;
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size_t write_msgfds_num;
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bool registered_yank;
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SocketAddress *addr;
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bool is_listen;
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bool is_telnet;
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bool is_tn3270;
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GSource *telnet_source;
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TCPChardevTelnetInit *telnet_init;
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bool is_websock;
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GSource *reconnect_timer;
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int64_t reconnect_time_ms;
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bool connect_err_reported;
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QIOTask *connect_task;
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};
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typedef struct SocketChardev SocketChardev;
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DECLARE_INSTANCE_CHECKER(SocketChardev, SOCKET_CHARDEV,
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TYPE_CHARDEV_SOCKET)
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#endif /* CHAR_SOCKET_H */
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