Introduce virnetdevtest

This is yet another test for check of basic functionality of our
NIC state handling code.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

src/libvirt_private.syms

@@ -1742,6 +1742,7 @@ virNetDevSetPromiscuous;
 virNetDevSetRcvAllMulti;
 virNetDevSetRcvMulti;
 virNetDevSetupControl;
+virNetDevSysfsFile;
 virNetDevValidateConfig;
 
 

src/util/virnetdev.c

@@ -1614,7 +1614,7 @@ int virNetDevValidateConfig(const char *ifname ATTRIBUTE_UNUSED,
 #ifdef __linux__
 # define NET_SYSFS "/sys/class/net/"
 
-static int
+int
 virNetDevSysfsFile(char **pf_sysfs_device_link, const char *ifname,
                    const char *file)
 {

src/util/virnetdev.h

@@ -219,4 +219,9 @@ int virNetDevSetRcvAllMulti(const char *ifname, bool receive)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
 int virNetDevGetRcvAllMulti(const char *ifname, bool *receive)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
+int virNetDevSysfsFile(char **pf_sysfs_device_link,
+                       const char *ifname,
+                       const char *file)
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
+    ATTRIBUTE_RETURN_CHECK;
 #endif /* __VIR_NETDEV_H__ */

tests/Makefile.am

@@ -176,6 +176,7 @@ test_programs = virshtest sockettest \
 	domainconftest \
 	virhostdevtest \
 	vircaps2xmltest \
+	virnetdevtest \
 	$(NULL)
 
 if WITH_REMOTE
@@ -402,6 +403,7 @@ test_libraries = libshunload.la \
 		virnetserverclientmock.la \
 		vircgroupmock.la \
 		virpcimock.la \
+		virnetdevmock.la \
 		$(NULL)
 if WITH_QEMU
 test_libraries += libqemumonitortestutils.la \
@@ -1029,6 +1031,19 @@ virpcimock_la_LIBADD = $(GNULIB_LIBS) \
 virpcimock_la_LDFLAGS = -module -avoid-version \
         -rpath /evil/libtool/hack/to/force/shared/lib/creation
 
+virnetdevtest_SOURCES = \
+	virnetdevtest.c testutils.h testutils.c
+virnetdevtest_CFLAGS = $(AM_CFLAGS) $(LIBNL_CFLAGS)
+virnetdevtest_LDADD = $(LDADDS)
+
+virnetdevmock_la_SOURCES = \
+	virnetdevmock.c
+virnetdevmock_la_CFLAGS = $(AM_CFLAGS) $(LIBNL_CFLAGS)
+virnetdevmock_la_LIBADD = $(GNULIB_LIBS) \
+					   ../src/libvirt.la
+virnetdevmock_la_LDFLAGS = -module -avoid-version \
+        -rpath /evil/libtool/hack/to/force/shared/lib/creation
+
 if WITH_LINUX
 virusbtest_SOURCES = \
 	virusbtest.c testutils.h testutils.c

tests/virnetdevmock.c

+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Author: Michal Privoznik <mprivozn@redhat.com>
+ */
+
+#include <config.h>
+
+#ifdef __linux__
+# include "internal.h"
+# include <stdlib.h>
+# include <stdio.h>
+# include "virstring.h"
+# include "virnetdev.h"
+
+# define NET_DEV_TEST_DATA_PREFIX abs_srcdir "/virnetdevtestdata/sys/class/net"
+
+int
+virNetDevSysfsFile(char **pf_sysfs_device_link,
+                   const char *ifname,
+                   const char *file)
+{
+
+    if (virAsprintfQuiet(pf_sysfs_device_link, "%s/%s/%s",
+                         NET_DEV_TEST_DATA_PREFIX, ifname, file) < 0) {
+        fprintf(stderr, "Out of memory\n");
+        abort();
+    }
+
+    return 0;
+}
+#else
+/* Nothing to override on non-__linux__ platforms */
+#endif

tests/virnetdevtest.c

+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Author: Michal Privoznik <mprivozn@redhat.com>
+ */
+
+#include <config.h>
+
+#include "testutils.h"
+
+#ifdef __linux__
+
+# include "virnetdev.h"
+
+# define VIR_FROM_THIS VIR_FROM_NONE
+
+struct testVirNetDevGetLinkInfoData {
+    const char *ifname;         /* ifname to get info on */
+    virInterfaceState state;    /* expected state */
+    unsigned int speed;         /* expected speed */
+};
+
+static int
+testVirNetDevGetLinkInfo(const void *opaque)
+{
+    int ret = -1;
+    const struct testVirNetDevGetLinkInfoData *data = opaque;
+    virInterfaceLink lnk;
+
+    if (virNetDevGetLinkInfo(data->ifname, &lnk) < 0)
+        goto cleanup;
+
+    if (lnk.state != data->state) {
+        fprintf(stderr,
+                "Fetched link state (%s) doesn't match the expected one (%s)",
+                virInterfaceStateTypeToString(lnk.state),
+                virInterfaceStateTypeToString(data->state));
+        goto cleanup;
+    }
+
+    if (lnk.speed != data->speed) {
+        fprintf(stderr,
+                "Fetched link speed (%u) doesn't match the expected one (%u)",
+                lnk.speed, data->speed);
+        goto cleanup;
+    }
+
+    ret = 0;
+ cleanup:
+    return ret;
+}
+
+static int
+mymain(void)
+{
+    int ret = 0;
+
+# define DO_TEST_LINK(ifname, state, speed)                                 \
+    do {                                                                    \
+        struct testVirNetDevGetLinkInfoData data = {ifname, state, speed};  \
+        if (virtTestRun("Link info: " # ifname,                             \
+                        testVirNetDevGetLinkInfo, &data) < 0)               \
+            ret = -1;                                                       \
+    } while (0)
+
+    DO_TEST_LINK("eth0", VIR_INTERFACE_STATE_UP, 1000);
+    DO_TEST_LINK("lo", VIR_INTERFACE_STATE_UNKNOWN, 0);
+    DO_TEST_LINK("eth0-broken", VIR_INTERFACE_STATE_DOWN, 0);
+
+    return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+}
+
+VIRT_TEST_MAIN_PRELOAD(mymain, abs_builddir "/.libs/virnetdevmock.so")
+#else
+int
+main(void)
+{
+    return EXIT_AM_SKIP;
+}
+#endif

tests/virnetdevtestdata/sys/class/net/eth0-broken/operstate

+down

tests/virnetdevtestdata/sys/class/net/eth0-broken/speed

+4294967295

tests/virnetdevtestdata/sys/class/net/eth0/operstate

+up

tests/virnetdevtestdata/sys/class/net/eth0/speed

+1000

tests/virnetdevtestdata/sys/class/net/lo/operstate

+unknown

tests/virnetdevtestdata/sys/class/net/lo/speed

+0