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net/announce: Add HMP optional interface list

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Add the optional interface list to the HMP command.

i.e.

   All interfaces
        announce_self

   Just the named interfaces:
        announce_self vn1,vn2

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2019-06-20 19:47:03 +01:00 committed by Jason Wang
parent ef2fdbfb4d
commit 0852827115
2 changed files with 41 additions and 3 deletions
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6
hmp-commands.hx
View file

@ -955,8 +955,8 @@ ETEXI
{
.name = "announce_self",
.args_type = "",
.params = "",
.args_type = "interfaces:s?",
.params = "[interfaces]",
.help = "Trigger GARP/RARP announcements",
.cmd = hmp_announce_self,
},
@ -967,6 +967,8 @@ STEXI
Trigger a round of GARP/RARP broadcasts; this is useful for explicitly updating the
network infrastructure after a reconfiguration or some forms of migration.
The timings of the round are set by the migration announce parameters.
An optional comma separated @var{interfaces} list restricts the announce to the
named set of interfaces.
ETEXI
{

38
monitor/hmp-cmds.c
View file

@ -27,6 +27,7 @@
#include "monitor/monitor-internal.h"
#include "monitor/qdev.h"
#include "qapi/error.h"
#include "qapi/clone-visitor.h"
#include "qapi/opts-visitor.h"
#include "qapi/qapi-builtin-visit.h"
#include "qapi/qapi-commands-block.h"
@ -38,6 +39,7 @@
#include "qapi/qapi-commands-run-state.h"
#include "qapi/qapi-commands-tpm.h"
#include "qapi/qapi-commands-ui.h"
#include "qapi/qapi-visit-net.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qerror.h"
#include "qapi/string-input-visitor.h"
@ -67,6 +69,32 @@ static void hmp_handle_error(Monitor *mon, Error **errp)
}
}
/*
* Produce a strList from a comma separated list.
* A NULL or empty input string return NULL.
*/
static strList *strList_from_comma_list(const char *in)
{
strList *res = NULL;
strList **hook = &res;
while (in && in[0]) {
char *comma = strchr(in, ',');
*hook = g_new0(strList, 1);
if (comma) {
(*hook)->value = g_strndup(in, comma - in);
in = comma + 1; /* skip the , */
} else {
(*hook)->value = g_strdup(in);
in = NULL;
}
hook = &(*hook)->next;
}
return res;
}
void hmp_info_name(Monitor *mon, const QDict *qdict)
{
NameInfo *info;
@ -1631,7 +1659,15 @@ void hmp_info_snapshots(Monitor *mon, const QDict *qdict)
void hmp_announce_self(Monitor *mon, const QDict *qdict)
{
qmp_announce_self(migrate_announce_params(), NULL);
const char *interfaces_str = qdict_get_try_str(qdict, "interfaces");
AnnounceParameters *params = QAPI_CLONE(AnnounceParameters,
migrate_announce_params());
qapi_free_strList(params->interfaces);
params->interfaces = strList_from_comma_list(interfaces_str);
params->has_interfaces = params->interfaces != NULL;
qmp_announce_self(params, NULL);
qapi_free_AnnounceParameters(params);
}
void hmp_migrate_cancel(Monitor *mon, const QDict *qdict)