From 9edd5338a2404909ac8d373964021e6dbb8f5815 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Thu, 27 Apr 2017 16:58:12 -0500 Subject: [PATCH] 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 Reviewed-by: Michael S. Tsirkin Reviewed-by: Marcel Apfelbaum Reviewed-by: Markus Armbruster Message-Id: <20170427215821.19397-2-eblake@redhat.com> Signed-off-by: Markus Armbruster --- hw/pci/pcie_aer.c | 44 ++++++++++++++++++++++++++------------------ 1 file 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)); } -- 2.11.0