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qapi: Convert simple union TpmTypeOptions to flat one

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Simple unions predate flat unions.  Having both complicates the QAPI
schema language and the QAPI generator.  We haven't been using simple
unions in new code for a long time, because they are less flexible and
somewhat awkward on the wire.

To prepare for their removal, convert simple union TpmTypeOptions to
an equivalent flat one, with existing enum TpmType replacing implicit
enum TpmTypeOptionsKind.  Adds some boilerplate to the schema, which
is a bit ugly, but a lot easier to maintain than the simple union
feature.

Cc: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210917143134.412106-6-armbru@redhat.com>
[Indentation tidied up]
This commit is contained in:
Markus Armbruster 2021-09-17 16:31:16 +02:00
parent b6fd5434de
commit 39dc3e4a4e
4 changed files with 28 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
backends/tpm/tpm_emulator.c
View File

@ -623,7 +623,7 @@ static TpmTypeOptions *tpm_emulator_get_tpm_options(TPMBackend *tb)
TPMEmulator *tpm_emu = TPM_EMULATOR(tb);
TpmTypeOptions *options = g_new0(TpmTypeOptions, 1);
options->type = TPM_TYPE_OPTIONS_KIND_EMULATOR;
options->type = TPM_TYPE_EMULATOR;
options->u.emulator.data = QAPI_CLONE(TPMEmulatorOptions, tpm_emu->options);
return options;

2
backends/tpm/tpm_passthrough.c
View File

@ -321,7 +321,7 @@ static TpmTypeOptions *tpm_passthrough_get_tpm_options(TPMBackend *tb)
{
TpmTypeOptions *options = g_new0(TpmTypeOptions, 1);
options->type = TPM_TYPE_OPTIONS_KIND_PASSTHROUGH;
options->type = TPM_TYPE_PASSTHROUGH;
options->u.passthrough.data = QAPI_CLONE(TPMPassthroughOptions,
TPM_PASSTHROUGH(tb)->options);

8
monitor/hmp-cmds.c
View File

@ -925,10 +925,10 @@ void hmp_info_tpm(Monitor *mon, const QDict *qdict)
c, TpmModel_str(ti->model));
monitor_printf(mon, " \\ %s: type=%s",
ti->id, TpmTypeOptionsKind_str(ti->options->type));
ti->id, TpmType_str(ti->options->type));
switch (ti->options->type) {
case TPM_TYPE_OPTIONS_KIND_PASSTHROUGH:
case TPM_TYPE_PASSTHROUGH:
tpo = ti->options->u.passthrough.data;
monitor_printf(mon, "%s%s%s%s",
tpo->has_path ? ",path=" : "",
@ -936,11 +936,11 @@ void hmp_info_tpm(Monitor *mon, const QDict *qdict)
tpo->has_cancel_path ? ",cancel-path=" : "",
tpo->has_cancel_path ? tpo->cancel_path : "");
break;
case TPM_TYPE_OPTIONS_KIND_EMULATOR:
case TPM_TYPE_EMULATOR:
teo = ti->options->u.emulator.data;
monitor_printf(mon, ",chardev=%s", teo->chardev);
break;
case TPM_TYPE_OPTIONS_KIND__MAX:
case TPM_TYPE__MAX:
break;
}
monitor_printf(mon, "\n");

24
qapi/tpm.json
View File

@ -99,6 +99,24 @@
{ 'struct': 'TPMEmulatorOptions', 'data': { 'chardev' : 'str' },
'if': 'CONFIG_TPM' }
##
# @TPMPassthroughOptionsWrapper:
#
# Since: 1.5
##
{ 'struct': 'TPMPassthroughOptionsWrapper',
'data': { 'data': 'TPMPassthroughOptions' },
'if': 'CONFIG_TPM' }
##
# @TPMEmulatorOptionsWrapper:
#
# Since: 2.11
##
{ 'struct': 'TPMEmulatorOptionsWrapper',
'data': { 'data': 'TPMEmulatorOptions' },
'if': 'CONFIG_TPM' }
##
# @TpmTypeOptions:
#
@ -110,8 +128,10 @@
# Since: 1.5
##
{ 'union': 'TpmTypeOptions',
'data': { 'passthrough' : 'TPMPassthroughOptions',
'emulator': 'TPMEmulatorOptions' },
'base': { 'type': 'TpmType' },
'discriminator': 'type',
'data': { 'passthrough' : 'TPMPassthroughOptionsWrapper',
'emulator': 'TPMEmulatorOptionsWrapper' },
'if': 'CONFIG_TPM' }
##