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authorEric Blake <eblake@redhat.com>2017-04-27 16:58:12 -0500
committerMarkus Armbruster <armbru@redhat.com>2017-05-08 20:32:14 +0200
commit9edd5338a2404909ac8d373964021e6dbb8f5815 (patch)
treec3c730fbeac61539516f60c27677737d3bb8e56c
parentcb69166bb8defaaa4b3e0a4e31de693737634a54 (diff)
pci: Use struct instead of QDict to pass back parameters
It's simpler to just use a C struct than it is to bundle things into a QDict in one function just to pull them back out in the caller. Plus, doing this gets rid of one more user of dynamic JSON through qobject_from_jsonf(), as well as a memory leak of the QDict. While cleaning the code, fix things to report all errors (the code was previously silently ignoring a failure of pcie_aer_inject_error(), at a distance). Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20170427215821.19397-2-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
-rw-r--r--hw/pci/pcie_aer.c44
1 files changed, 26 insertions, 18 deletions
diff --git a/hw/pci/pcie_aer.c b/hw/pci/pcie_aer.c
index a8c18203d6..653af86f4b 100644
--- a/hw/pci/pcie_aer.c
+++ b/hw/pci/pcie_aer.c
@@ -44,6 +44,13 @@
#define PCI_ERR_SRC_COR_OFFS 0
#define PCI_ERR_SRC_UNCOR_OFFS 2
+typedef struct PCIEErrorDetails {
+ const char *id;
+ const char *root_bus;
+ int bus;
+ int devfn;
+} PCIEErrorDetails;
+
/* From 6.2.7 Error Listing and Rules. Table 6-2, 6-3 and 6-4 */
static uint32_t pcie_aer_uncor_default_severity(uint32_t status)
{
@@ -942,8 +949,14 @@ static int pcie_aer_parse_error_string(const char *error_name,
return -EINVAL;
}
+/*
+ * Inject an error described by @qdict.
+ * On success, set @details to show where error was sent.
+ * Return negative errno if injection failed and a message was emitted.
+ */
static int do_pcie_aer_inject_error(Monitor *mon,
- const QDict *qdict, QObject **ret_data)
+ const QDict *qdict,
+ PCIEErrorDetails *details)
{
const char *id = qdict_get_str(qdict, "id");
const char *error_name;
@@ -1005,33 +1018,28 @@ static int do_pcie_aer_inject_error(Monitor *mon,
err.prefix[3] = qdict_get_try_int(qdict, "prefix3", 0);
ret = pcie_aer_inject_error(dev, &err);
- *ret_data = qobject_from_jsonf("{'id': %s, "
- "'root_bus': %s, 'bus': %d, 'devfn': %d, "
- "'ret': %d}",
- id, pci_root_bus_path(dev),
- pci_bus_num(dev->bus), dev->devfn,
- ret);
- assert(*ret_data);
+ if (ret < 0) {
+ monitor_printf(mon, "failed to inject error: %s\n",
+ strerror(-ret));
+ return ret;
+ }
+ details->id = id;
+ details->root_bus = pci_root_bus_path(dev);
+ details->bus = pci_bus_num(dev->bus);
+ details->devfn = dev->devfn;
return 0;
}
void hmp_pcie_aer_inject_error(Monitor *mon, const QDict *qdict)
{
- QObject *data;
- int devfn;
+ PCIEErrorDetails data;
if (do_pcie_aer_inject_error(mon, qdict, &data) < 0) {
return;
}
- qdict = qobject_to_qdict(data);
- assert(qdict);
-
- devfn = (int)qdict_get_int(qdict, "devfn");
monitor_printf(mon, "OK id: %s root bus: %s, bus: %x devfn: %x.%x\n",
- qdict_get_str(qdict, "id"),
- qdict_get_str(qdict, "root_bus"),
- (int) qdict_get_int(qdict, "bus"),
- PCI_SLOT(devfn), PCI_FUNC(devfn));
+ data.id, data.root_bus, data.bus,
+ PCI_SLOT(data.devfn), PCI_FUNC(data.devfn));
}