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Re: [Qemu-devel] [PATCHv2] cutils: factor out pci_host_device_address_pa
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCHv2] cutils: factor out pci_host_device_address_parse() |
Date: |
Thu, 16 Feb 2017 16:37:03 +0200 |
On Thu, Feb 16, 2017 at 02:58:27PM +0400, Marc-André Lureau wrote:
> This will allow the function to be used outside of QOM properties.
>
> Add tests and replace strtoul usage for qemu_strtoul while touching it.
>
> Signed-off-by: Marc-André Lureau <address@hidden>
Sorry, I don't want to start maintaining it. So pls do not move it
to hw/pci. Find out who wants to maintain this and add it there :)
> ---
> v2:
> - fixed incompatible type warning/error
>
> include/hw/pci/pci.h | 12 ++++++++++
> hw/core/qdev-properties.c | 61
> +++--------------------------------------------
> tests/test-cutils.c | 46 +++++++++++++++++++++++++++++++++++
> util/cutils.c | 59 +++++++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 120 insertions(+), 58 deletions(-)
>
> diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
> index cbc1fdfb5b..61718080ea 100644
> --- a/include/hw/pci/pci.h
> +++ b/include/hw/pci/pci.h
> @@ -815,4 +815,16 @@ extern const VMStateDescription vmstate_pci_device;
>
> MSIMessage pci_get_msi_message(PCIDevice *dev, int vector);
>
> +/**
> + * pci_host_device_address_parse:
> + * @str: string to parse
> + * @addr: destination structure or NULL
> + *
> + * Parse [<domain>:]<bus>:<slot>.<func>
> + * if <domain> is not supplied, it's assumed to be 0.
> + *
> + * Returns: -1 on failure, 0 on success.
> + */
> +int pci_host_device_address_parse(const char *str, PCIHostDeviceAddress
> *addr);
> +
> #endif
Used to be a static function, now it's an interface, I'm not sure it's a win.
> diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c
> index 6ab4265eb4..5dd0774e88 100644
> --- a/hw/core/qdev-properties.c
> +++ b/hw/core/qdev-properties.c
> @@ -722,10 +722,6 @@ static void get_pci_host_devaddr(Object *obj, Visitor
> *v, const char *name,
> visit_type_str(v, name, &p, errp);
> }
>
> -/*
> - * Parse [<domain>:]<bus>:<slot>.<func>
> - * if <domain> is not supplied, it's assumed to be 0.
> - */
> static void set_pci_host_devaddr(Object *obj, Visitor *v, const char *name,
> void *opaque, Error **errp)
> {
> @@ -733,11 +729,7 @@ static void set_pci_host_devaddr(Object *obj, Visitor
> *v, const char *name,
> Property *prop = opaque;
> PCIHostDeviceAddress *addr = qdev_get_prop_ptr(dev, prop);
> Error *local_err = NULL;
> - char *str, *p;
> - char *e;
> - unsigned long val;
> - unsigned long dom = 0, bus = 0;
> - unsigned int slot = 0, func = 0;
> + char *str;
>
> if (dev->realized) {
> qdev_prop_set_after_realize(dev, name, errp);
> @@ -750,58 +742,11 @@ static void set_pci_host_devaddr(Object *obj, Visitor
> *v, const char *name,
> return;
> }
>
> - p = str;
> - val = strtoul(p, &e, 16);
> - if (e == p || *e != ':') {
> - goto inval;
> - }
> - bus = val;
> -
> - p = e + 1;
> - val = strtoul(p, &e, 16);
> - if (e == p) {
> - goto inval;
> - }
> - if (*e == ':') {
> - dom = bus;
> - bus = val;
> - p = e + 1;
> - val = strtoul(p, &e, 16);
> - if (e == p) {
> - goto inval;
> - }
> - }
> - slot = val;
> -
> - if (*e != '.') {
> - goto inval;
> + if (!pci_host_device_address_parse(str, addr)) {
> + error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str);
> }
> - p = e + 1;
> - val = strtoul(p, &e, 10);
> - if (e == p) {
> - goto inval;
> - }
> - func = val;
> -
> - if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7) {
> - goto inval;
> - }
> -
> - if (*e) {
> - goto inval;
> - }
> -
> - addr->domain = dom;
> - addr->bus = bus;
> - addr->slot = slot;
> - addr->function = func;
>
> g_free(str);
> - return;
> -
> -inval:
> - error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str);
> - g_free(str);
> }
>
> PropertyInfo qdev_prop_pci_host_devaddr = {
> diff --git a/tests/test-cutils.c b/tests/test-cutils.c
> index 20b0f59ba2..81c4f072f3 100644
> --- a/tests/test-cutils.c
> +++ b/tests/test-cutils.c
> @@ -28,6 +28,7 @@
> #include "qemu/osdep.h"
>
> #include "qemu/cutils.h"
> +#include "hw/pci/pci.h"
>
> static void test_parse_uint_null(void)
> {
> @@ -1437,6 +1438,46 @@ static void test_qemu_strtosz_suffix_unit(void)
> g_assert_cmpint(res, ==, 12345000);
> }
>
> +static void test_pci_parse_valid(void)
> +{
> + PCIHostDeviceAddress addr = { 0xff, 0xff, 0xff, 0xff };
> + int i, res;
> + const struct {
> + const char *str;
> + PCIHostDeviceAddress addr;
> + } tests[] = {
> + { "1:2.3", { 0, 1, 2, 3 } },
> + { "4:1:2.3", { 4, 1, 2, 3 } },
> + { "a:a:a.7", { 10, 10, 10, 7 } },
> + };
> +
> + for (i = 0; i < ARRAY_SIZE(tests); i++) {
> + res = pci_host_device_address_parse(tests[i].str, &addr);
> + g_assert_cmpint(res, ==, 0);
> +
> + g_assert_cmpint(addr.domain, ==, tests[i].addr.domain);
> + g_assert_cmpint(addr.bus, ==, tests[i].addr.bus);
> + g_assert_cmpint(addr.slot, ==, tests[i].addr.slot);
> + g_assert_cmpint(addr.function, ==, tests[i].addr.function);
> + }
> +}
> +
> +static void test_pci_parse_invalid(void)
> +{
> + int i, res;
> + const char *tests[] = {
> + "", "foo", "1:2.3 foo",
> + "a:a:a.a",
> + "1", "1:", "1:2", "1:2:", "1:2:3", ":1:2:3.",
> + "-1:1:2.3", "-1:2.3", "1:-1.3", "1:2.-3",
> + "0x10000:1:1.1", "0x100:1.1", "1:0x20.1", "1:1.8" };
> +
> + for (i = 0; i < ARRAY_SIZE(tests); i++) {
> + res = pci_host_device_address_parse(tests[i], NULL);
> + g_assert_cmpint(res, ==, -1);
> + }
> +}
> +
> int main(int argc, char **argv)
> {
> g_test_init(&argc, &argv, NULL);
Pls find a way to test is through a property.
> @@ -1598,5 +1639,10 @@ int main(int argc, char **argv)
> g_test_add_func("/cutils/strtosz/suffix-unit",
> test_qemu_strtosz_suffix_unit);
>
> + g_test_add_func("/cutils/pci-parse/valid",
> + test_pci_parse_valid);
> + g_test_add_func("/cutils/pci-parse/invalid",
> + test_pci_parse_invalid);
> +
> return g_test_run();
> }
> diff --git a/util/cutils.c b/util/cutils.c
> index 4fefcf3be3..fc71c85816 100644
> --- a/util/cutils.c
> +++ b/util/cutils.c
> @@ -29,6 +29,7 @@
> #include "qemu/sockets.h"
> #include "qemu/iov.h"
> #include "net/net.h"
> +#include "hw/pci/pci.h"
> #include "qemu/cutils.h"
>
> void strpadcpy(char *buf, int buf_size, const char *str, char pad)
> @@ -594,3 +595,61 @@ const char *qemu_ether_ntoa(const MACAddr *mac)
>
> return ret;
> }
> +
> +int pci_host_device_address_parse(const char *str, PCIHostDeviceAddress
> *addr)
> +{
> + const char *p = str;
> + const char *e;
> + unsigned long val;
> + unsigned int dom = 0, bus = 0;
> + unsigned int slot = 0, func = 0;
> +
> + if (qemu_strtoul(p, &e, 16, &val) < 0
> + || e == p || *e != ':') {
> + return -1;
> + }
> + bus = val;
> +
> + p = e + 1;
> + if (qemu_strtoul(p, &e, 16, &val) < 0
> + || e == p) {
> + return -1;
> + }
> + if (*e == ':') {
> + dom = bus;
> + bus = val;
> + p = e + 1;
> + if (qemu_strtoul(p, &e, 16, &val) < 0
> + || e == p) {
> + return -1;
> + }
> + }
> + slot = val;
> +
> + if (*e != '.') {
> + return -1;
> + }
> + p = e + 1;
> + if (qemu_strtoul(p, &e, 10, &val) < 0
> + || e == p) {
> + return -1;
> + }
> + func = val;
> +
> + if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7) {
> + return -1;
> + }
> +
> + if (*e) {
> + return -1;
> + }
> +
> + if (addr) {
> + addr->domain = dom;
> + addr->bus = bus;
> + addr->slot = slot;
> + addr->function = func;
> + }
> +
> + return 0;
> +}
> --
> 2.11.0.295.gd7dffce1c.dirty