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qapi: Add InetSocketAddress member keep-alive 

It's needed to provide keepalive for nbd client to track server
availability.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20190725094937.32454-1-vsementsov@virtuozzo.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Daniel P. Berrangé <berrange@redhat.com>
[eblake: Fix error message typo]
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2019-07-25 12:49:37 +03:00 committed by Eric Blake
parent 9e06029aea
commit aec21d3175
2 changed files with 33 additions and 1 deletions
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6
qapi/sockets.json
View File

@ -53,6 +53,9 @@
#
# @ipv6: whether to accept IPv6 addresses, default try both IPv4 and IPv6
#
# @keep-alive: enable keep-alive when connecting to this socket. Not supported
# for passive sockets. (Since 4.2)
#
# Since: 1.3
##
{ 'struct': 'InetSocketAddress',
@ -61,7 +64,8 @@
'*numeric': 'bool',
'*to': 'uint16',
'*ipv4': 'bool',
'*ipv6': 'bool' } }
'*ipv6': 'bool',
'*keep-alive': 'bool' } }
##
# @UnixSocketAddress:

28
util/qemu-sockets.c
View File

@ -219,6 +219,12 @@ static int inet_listen_saddr(InetSocketAddress *saddr,
bool socket_created = false;
Error *err = NULL;
if (saddr->keep_alive) {
error_setg(errp, "keep-alive option is not supported for passive "
"sockets");
return -1;
}
memset(&ai,0, sizeof(ai));
ai.ai_flags = AI_PASSIVE;
if (saddr->has_numeric && saddr->numeric) {
@ -458,6 +464,19 @@ int inet_connect_saddr(InetSocketAddress *saddr, Error **errp)
}
freeaddrinfo(res);
if (saddr->keep_alive) {
int val = 1;
int ret = qemu_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE,
&val, sizeof(val));
if (ret < 0) {
error_setg_errno(errp, errno, "Unable to set KEEPALIVE");
close(sock);
return -1;
}
}
return sock;
}
@ -653,6 +672,15 @@ int inet_parse(InetSocketAddress *addr, const char *str, Error **errp)
}
addr->has_ipv6 = true;
}
begin = strstr(optstr, ",keep-alive");
if (begin) {
if (inet_parse_flag("keep-alive", begin + strlen(",keep-alive"),
&addr->keep_alive, errp) < 0)
{
return -1;
}
addr->has_keep_alive = true;
}
return 0;
}