Add somewhat generic dhcpd addon snippets.

1 files changed, 97 insertions, 0 deletions

diff --git a/dhcp3/dhcpd.etherboot-udhcp b/dhcp3/dhcpd.etherboot-udhcp
new file mode 100644
index 0000000..9a3e442
--- /dev/null
+++ b/dhcp3/dhcpd.etherboot-udhcp
@@ -0,0 +1,97 @@
+# This ISC dhcpd 3.x config snippet is inspired by initrd code in
+# contrib area of etherboot source (dhcpd.conf.etherboot.include).
+
+# Usage:
+#
+# include "/etc/local-COMMON/dhcp3/dhcpd.etherboot";
+# include "/etc/local-COMMON/dhcp3/dhcpd.etherboot-udhcp";
+# include "/etc/local/dhcpd.conf.etherboot-pcimap.include"; # file generated by mknbi-set
+#
+# (...common options...)
+#
+# subclass "etherboot-udhcp-hosts" 00:01:02:03:04:05;
+# subclass "etherboot-udhcp-hosts" 00:01:02:03:04:06 { fixed-address 192.168.1.101; another-option "bla bla"; }
+#
+
+class "etherboot-udhcp-hosts" {
+	match pick-first-value (option dhcp-client-identifier, hardware);
+}
+
+# Apply Etherboot options only for Etherboot clients
+#
+if substring ( option vendor-class-identifier, 0, 9 ) = "Etherboot" {
+
+	# We must specify this value for etherboot-magic, or Etherboot will
+	# ignore all other options.
+	#
+	option etherboot.magic E4:45:74:68:00:00;
+
+	# Bootfile name: derive from etherboot.kmod (calculated below)
+	# Use boot.nbi if no NIC_DEV_ID option present
+	# (i.e. if etherboot.kmod doesn't get set)
+	# Also pass filename back in filename field
+	#
+	option bootfile-name = pick-first-value (
+		concat (
+			"boot-",
+			config-option etherboot.kmod,
+			".nbi"
+		),
+		"boot.nbi"
+	) ;
+	filename = config-option bootfile-name;
+
+	# "Sensible" default values for some options
+
+	# Mount devfs (will probably be needed for a network-boot)
+	option etherboot.kernel-cmdline " devfs=mount";
+
+	# Info message (includes client IP address, MAC address, hardware ID string,
+	# server IP address and name of boot file)
+	option etherboot.motd-4 = concat (
+		"Using Etherboot to boot ",
+		binary-to-ascii ( 10, 8, ".", leased-address ),
+		" [",
+		binary-to-ascii ( 16, 8, ":", suffix ( hardware, 6 ) ),
+		"] [",
+		pick-first-value ( option etherboot.nic-dev-id, "unknown card" ),
+		"]", 0d:0a, "  from ",
+		binary-to-ascii ( 10, 8, ".", option dhcp-server-identifier ),
+		" with file ",
+		config-option tftp-server-name,
+		":",
+		config-option bootfile-name,
+		" [",
+		pick-first-value ( config-option etherboot.kmod, "unknown module" ),
+		"]", 0d:0a
+	);
+}
+
+# Some options should be set for both Etherboot and the udhcpc client
+#
+if (
+	( substring ( option vendor-class-identifier, 0, 9 ) = "Etherboot" )
+        or
+	( substring ( option vendor-class-identifier, 0, 5 ) = "udhcp" )
+) {
+
+	# TFTP server defaults to DHCP server and is specified in both
+	# next-server field and tftp-server-name option field
+	#
+	option tftp-server-name = binary-to-ascii ( 10, 8, ".", config-option dhcp-server-identifier );
+	server-name = config-option tftp-server-name;
+	next-server = config-option dhcp-server-identifier;
+
+	# Root path defaults to root of TFTP server
+	option root-path = concat ( config-option tftp-server-name, ":/" );
+
+	# A fallback hostname, generated from the IP address
+	option host-name = concat ( "client_", binary-to-ascii ( 10, 8, "_", leased-address ) );
+}
+
+# Force some items onto parameter request list for udhcp
+#
+if substring ( option vendor-class-identifier, 0, 5 ) = "udhcp" {
+	# Forcibly add root-path to list
+	option dhcp-parameter-request-list = concat ( option dhcp-parameter-request-list, 11 );
+}