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net: Improve error message for -net hubport a bit 

Type "hubport" is valid only with -netdev.  Unfortunately, that's
detected late and the error message doesn't explain why:

    $ qemu-system-i386 -net hubport,id=foo,hubid=0
    qemu-system-i386: -net hubport,id=foo,hubid=0: Device 'hubport' could not be initialized

Improve the error message to "Parameter 'type' expects a net type".

Not fixed: -net hubport without the parameters required by -netdev
hubport still asks for those parameters:

    $ qemu-system-i386 -net hubport
    qemu-system-i386: -net hubport: Parameter 'hubid' is missing

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-2-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Markus Armbruster 2015-05-15 13:58:49 +02:00 committed by Stefan Hajnoczi
parent 6a8b4a5be2
commit ca7eb1848b
2 changed files with 6 additions and 4 deletions
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5
net/hub.c
View File

@ -286,12 +286,9 @@ int net_init_hubport(const NetClientOptions *opts, const char *name,
const NetdevHubPortOptions *hubport;
assert(opts->kind == NET_CLIENT_OPTIONS_KIND_HUBPORT);
assert(!peer);
hubport = opts->hubport;
if (peer) {
return -EINVAL;
}
net_hub_add_port(hubport->hubid, name);
return 0;
}

5
net/net.c
View File

@ -882,6 +882,11 @@ static int net_client_init1(const void *object, int is_netdev, Error **errp)
} else {
u.net = object;
opts = u.net->opts;
if (opts->kind == NET_CLIENT_OPTIONS_KIND_HUBPORT) {
error_set(errp, QERR_INVALID_PARAMETER_VALUE, "type",
"a net type");
return -1;
}
/* missing optional values have been initialized to "all bits zero" */
name = u.net->has_id ? u.net->id : u.net->name;
}