[Buildroot] [PATCH 24/24] system: allow DHCP interface with systemd-networkd

Yann E. MORIN yann.morin.1998 at free.fr
Sun Jun 12 21:55:29 UTC 2016


It is prett trivial to enable a DHCP interface with systemd-networkd, we
just need to provide a .network config file with just the name of the
interface to bring up and activate DHCP on it.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
---
 package/skeleton-systemd/skeleton-systemd.mk | 11 ++++++++++-
 system/Config.in                             |  9 +++------
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/package/skeleton-systemd/skeleton-systemd.mk b/package/skeleton-systemd/skeleton-systemd.mk
index c7c2e26..1ad1470 100644
--- a/package/skeleton-systemd/skeleton-systemd.mk
+++ b/package/skeleton-systemd/skeleton-systemd.mk
@@ -15,7 +15,16 @@ SKELETON_SYSTEMD_ADD_SKELETON_DEPENDENCY = NO
 
 # In case we're not using systemd-networkd, use the sysv-like network infra;
 # otherwise, the necessary bits are installed by the systemd package.
-ifeq ($(BR2_PACKAGE_SYSTEMD_NETWORKD),)
+ifeq ($(BR2_PACKAGE_SYSTEMD_NETWORKD),y)
+
+define SKELETON_SYSTEMD_SET_NETWORK
+	printf '[Match]\nName=%s\n[Network]\nDHCP=yes\n' \
+		$(SKELETON_NETWORK_DHCP_IFACE) \
+		>$(TARGET_DIR)/etc/systemd/network/$(SKELETON_NETWORK_DHCP_IFACE).network
+endef
+SKELETON_SYSTEMD_TARGET_FINALIZE_HOOKS += SKELETON_SYSTEMD_SET_NETWORK
+
+else # BR2_PACKAGE_SYSTEMD_NETWORKD is not set
 
 define SKELETON_SYSTEMD_RSYNC_NETWORK
 	 $(call SKELETON_RSYNC,system/skeleton-net,$(TARGET_DIR))
diff --git a/system/Config.in b/system/Config.in
index 32d6542..c90866c 100644
--- a/system/Config.in
+++ b/system/Config.in
@@ -362,7 +362,7 @@ config BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW
 config BR2_SYSTEM_DHCP
 	string "Network interface to configure through DHCP"
 	default ""
-	depends on !BR2_PACKAGE_SYSTEMD_NETWORKD && (BR2_PACKAGE_BUSYBOX || BR2_PACKAGE_IFUPDOWN)
+	depends on BR2_PACKAGE_SYSTEMD_NETWORKD || BR2_PACKAGE_BUSYBOX || BR2_PACKAGE_IFUPDOWN
 	help
 	  Enter here the name of the network interface (E.G. eth0) to
 	  automatically configure through DHCP at bootup.
@@ -372,11 +372,8 @@ config BR2_SYSTEM_DHCP
 	  For more complicated network setups use an overlay to overwrite
 	  /etc/network/interfaces or add a networkd configuration file.
 
-comment "automatic network configuration via DHCP is not compatible with networkd"
-	depends on BR2_PACKAGE_SYSTEMD_NETWORKD
-
-comment "automatic network configuration via DHCP needs ifupdown or busybox"
-	depends on !(BR2_PACKAGE_BUSYBOX || BR2_PACKAGE_IFUPDOWN)
+comment "automatic network configuration via DHCP needs systemd, busybox or ifupdown"
+	depends on !(BR2_PACKAGE_SYSTEMD_NETWORKD || BR2_PACKAGE_BUSYBOX || BR2_PACKAGE_IFUPDOWN)
 
 endif # BR2_ROOTFS_SKELETON_DEFAULT
 
-- 
2.7.4




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