initrd: add devicetree supportlr/initrd-ofw

This adds capability to hand over the network configuration from
OpenFirmware (and potentially other boot loaders with openfirmware
support such as U-Boot) to NetworkManager.

It's done analogously to ACPI/iBFT. In fact, the same ip=ibft command
line option is used, adding a more general ip=fw alias. This probably
deserves some documentation, but I'm not adding any at this time.

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/merge_requests/257

21 files changed, 157 insertions, 0 deletions

diff --git a/src/initrd/tests/meson.build b/src/initrd/tests/meson.build
index 20cf6af23b..6a508d3d8b 100644
--- a/src/initrd/tests/meson.build
+++ b/src/initrd/tests/meson.build
@@ -1,4 +1,5 @@
 test_units = [
+  'test-dt-reader',
   'test-ibft-reader',
   'test-cmdline-reader',
 ]
diff --git a/src/initrd/tests/sysfs-dt-tftp/firmware/devicetree/base/chosen/bootpath b/src/initrd/tests/sysfs-dt-tftp/firmware/devicetree/base/chosen/bootpath
new file mode 100644
index 0000000000..6f069ae0fc
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt-tftp/firmware/devicetree/base/chosen/bootpath
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/bootp-request b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/bootp-request
new file mode 100644
index 0000000000..034d423ee3
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/bootp-request
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/bootp-response b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/bootp-response
new file mode 100644
index 0000000000..25982d6f42
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/bootp-response
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/bootpath b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/bootpath
new file mode 100644
index 0000000000..db88070270
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/bootpath
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/broadcast-ip b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/broadcast-ip
new file mode 100644
index 0000000000..7bde8641b9
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/broadcast-ip
@@ -0,0 +1 @@
+ÿÿÿÿ
\ No newline at end of file
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/client-ip b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/client-ip
new file mode 100644
index 0000000000..f108ba9b39
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/client-ip
@@ -0,0 +1,2 @@
+
++
\ No newline at end of file
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/client-name b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/client-name
new file mode 100644
index 0000000000..fe0f76b8ed
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/client-name
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/domain-name b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/domain-name
new file mode 100644
index 0000000000..b34f9f968e
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/domain-name
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/gateway-ip b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/gateway-ip
new file mode 100644
index 0000000000..f036183536
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/gateway-ip
@@ -0,0 +1,2 @@
+
++þ
\ No newline at end of file
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/name b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/name
new file mode 100644
index 0000000000..f3e5805251
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/name
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/netmask-ip b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/netmask-ip
new file mode 100644
index 0000000000..d441cd83fc
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/netmask-ip
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/root-path b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/root-path
new file mode 100644
index 0000000000..f76dd238ad
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/root-path
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/server-ip b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/server-ip
new file mode 100644
index 0000000000..a2a4b2e8de
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/server-ip
@@ -0,0 +1,2 @@
+
+&
\ No newline at end of file
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/tftp-file b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/tftp-file
new file mode 100644
index 0000000000..c0e0e3303e
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/tftp-file
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/vendor-options b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/vendor-options
new file mode 100644
index 0000000000..f76dd238ad
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/chosen/vendor-options
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/ethernet/device_type b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/ethernet/device_type
new file mode 100644
index 0000000000..df3c9d9f4c
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/ethernet/device_type
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/ethernet/local-mac-address b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/ethernet/local-mac-address
new file mode 100644
index 0000000000..c983e75212
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/ethernet/local-mac-address
@@ -0,0 +1 @@
+¬>åØ
\ No newline at end of file
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/ethernet/mac-address b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/ethernet/mac-address
new file mode 100644
index 0000000000..c983e75212
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/ethernet/mac-address
@@ -0,0 +1 @@
+¬>åØ
\ No newline at end of file
diff --git a/src/initrd/tests/sysfs-dt/firmware/devicetree/base/ethernet/name b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/ethernet/name
new file mode 100644
index 0000000000..88eaddfe14
--- /dev/null
+++ b/src/initrd/tests/sysfs-dt/firmware/devicetree/base/ethernet/name
diff --git a/src/initrd/tests/test-dt-reader.c b/src/initrd/tests/test-dt-reader.c
new file mode 100644
index 0000000000..20f455476e
--- /dev/null
+++ b/src/initrd/tests/test-dt-reader.c
@@ -0,0 +1,147 @@
+/* NetworkManager initrd configuration generator
+ *
+ * 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 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, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ * Copyright 2014 - 2018 Red Hat, Inc.
+ */
+
+#include "nm-default.h"
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <netinet/ether.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <sys/socket.h>
+
+#include "nm-core-internal.h"
+#include "NetworkManagerUtils.h"
+
+#include "../nm-initrd-generator.h"
+
+#include "nm-test-utils-core.h"
+
+static void
+test_read_dt_ofw (void)
+{
+	NMConnection *connection;
+	NMSettingConnection *s_con;
+	NMSettingWired *s_wired;
+	NMSettingIPConfig *s_ip4;
+	NMSettingIPConfig *s_ip6;
+	const char *mac_address;
+
+	connection = nmi_dt_reader_parse (TEST_INITRD_DIR "/sysfs-dt");
+	g_assert (connection);
+	nmtst_assert_connection_verifies (connection);
+
+	s_con = nm_connection_get_setting_connection (connection);
+	g_assert (s_con);
+	g_assert_cmpstr (nm_setting_connection_get_connection_type (s_con), ==, NM_SETTING_WIRED_SETTING_NAME);
+	g_assert_cmpstr (nm_setting_connection_get_id (s_con), ==, "OpenFirmware Connection");
+	g_assert_cmpint (nm_setting_connection_get_timestamp (s_con), ==, 0);
+	g_assert (nm_setting_connection_get_autoconnect (s_con));
+
+	s_wired = nm_connection_get_setting_wired (connection);
+	g_assert (s_wired);
+	mac_address = nm_setting_wired_get_mac_address (s_wired);
+	g_assert (mac_address);
+	g_assert (nm_utils_hwaddr_matches (mac_address, -1, "ac:7f:3e:e5:d8:d8", -1));
+	g_assert (!nm_setting_wired_get_duplex (s_wired));
+	g_assert_cmpint (nm_setting_wired_get_speed (s_wired), ==, 0);
+	g_assert_cmpint (nm_setting_wired_get_mtu (s_wired), ==, 0);
+
+	s_ip4 = nm_connection_get_setting_ip4_config (connection);
+	g_assert (s_ip4);
+	g_assert_cmpstr (nm_setting_ip_config_get_method (s_ip4), ==, NM_SETTING_IP4_CONFIG_METHOD_AUTO);
+	g_assert_cmpstr (nm_setting_ip_config_get_dhcp_hostname (s_ip4), ==, "demiurge");
+
+	s_ip6 = nm_connection_get_setting_ip6_config (connection);
+	g_assert (s_ip6);
+	g_assert_cmpstr (nm_setting_ip_config_get_method (s_ip6), ==, NM_SETTING_IP6_CONFIG_METHOD_AUTO);
+
+	g_object_unref (connection);
+}
+
+static void
+test_read_dt_slof (void)
+{
+	NMConnection *connection;
+	NMSettingConnection *s_con;
+	NMSettingWired *s_wired;
+	NMSettingIPConfig *s_ip4;
+	NMSettingIPConfig *s_ip6;
+	NMIPAddress *ip4_addr;
+
+	connection = nmi_dt_reader_parse (TEST_INITRD_DIR "/sysfs-dt-tftp");
+	g_assert (connection);
+	nmtst_assert_connection_verifies (connection);
+
+	s_con = nm_connection_get_setting_connection (connection);
+	g_assert (s_con);
+	g_assert_cmpstr (nm_setting_connection_get_connection_type (s_con), ==, NM_SETTING_WIRED_SETTING_NAME);
+	g_assert_cmpstr (nm_setting_connection_get_id (s_con), ==, "OpenFirmware Connection");
+	g_assert_cmpint (nm_setting_connection_get_timestamp (s_con), ==, 0);
+	g_assert (nm_setting_connection_get_autoconnect (s_con));
+
+	s_wired = nm_connection_get_setting_wired (connection);
+	g_assert (s_wired);
+	g_assert (!nm_setting_wired_get_mac_address (s_wired));
+	g_assert_cmpstr (nm_setting_wired_get_duplex (s_wired), ==, "half");
+	g_assert_cmpint (nm_setting_wired_get_speed (s_wired), ==, 10);
+	g_assert_cmpint (nm_setting_wired_get_mtu (s_wired), ==, 0);
+
+	s_ip4 = nm_connection_get_setting_ip4_config (connection);
+	g_assert (s_ip4);
+	g_assert_cmpstr (nm_setting_ip_config_get_method (s_ip4), ==, NM_SETTING_IP4_CONFIG_METHOD_MANUAL);
+
+	g_assert_cmpint (nm_setting_ip_config_get_num_addresses (s_ip4), ==, 1);
+	ip4_addr = nm_setting_ip_config_get_address (s_ip4, 0);
+	g_assert (ip4_addr);
+	g_assert_cmpstr (nm_ip_address_get_address (ip4_addr), ==, "192.168.32.2");
+	g_assert_cmpint (nm_ip_address_get_prefix (ip4_addr), ==, 16);
+
+	g_assert_cmpstr (nm_setting_ip_config_get_gateway (s_ip4), ==, "192.168.32.1");
+
+	s_ip6 = nm_connection_get_setting_ip6_config (connection);
+	g_assert (s_ip6);
+	g_assert_cmpstr (nm_setting_ip_config_get_method (s_ip6), ==, NM_SETTING_IP6_CONFIG_METHOD_DISABLED);
+
+	g_object_unref (connection);
+}
+
+static void
+test_read_dt_none (void)
+{
+	NMConnection *connection;
+
+	connection = nmi_dt_reader_parse (TEST_INITRD_DIR "/sysfs");
+	g_assert (!connection);
+}
+
+NMTST_DEFINE ();
+
+int main (int argc, char **argv)
+{
+	nmtst_init_assert_logging (&argc, &argv, "INFO", "DEFAULT");
+
+	g_test_add_func ("/initrd/dt/ofw", test_read_dt_ofw);
+	g_test_add_func ("/initrd/dt/slof", test_read_dt_slof);
+	g_test_add_func ("/initrd/dt/none", test_read_dt_none);
+
+	return g_test_run ();
+}