[PATCH] udhcp: Add config file option (code 209) definition

[Jeremy Kerr]

This change adds a definition for DHCP option 209. RFC 5071 defines code
209 as a configuration file for a PXE bootloader; this change uses
the string "conffile" as its text identifier.

Signed-off-by: Jeremy Kerr <jk at ozlabs.org>

---
 networking/udhcp/common.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/networking/udhcp/common.c b/networking/udhcp/common.c
index 11b7b1f..6f7cd4f 100644
--- a/networking/udhcp/common.c
+++ b/networking/udhcp/common.c
@@ -62,6 +62,7 @@ const struct dhcp_optflag dhcp_optflags[] = {
 	{ OPTION_U16                              , 0x84 }, /* DHCP_VLAN_ID       */
 	{ OPTION_U8                               , 0x85 }, /* DHCP_VLAN_PRIORITY */
 #endif
+	{ OPTION_STRING | OPTION_REQ              , 0xd1 }, /* DHCP_CONF_FILE     */
 	{ OPTION_6RD                              , 0xd4 }, /* DHCP_6RD           */
 	{ OPTION_STATIC_ROUTES | OPTION_LIST      , 0xf9 }, /* DHCP_MS_STATIC_ROUTES */
 	{ OPTION_STRING                           , 0xfc }, /* DHCP_WPAD          */
@@ -128,6 +129,7 @@ const char dhcp_option_strings[] ALIGN1 =
 	"vlanid" "\0"      /* DHCP_VLAN_ID        */
 	"vlanpriority" "\0"/* DHCP_VLAN_PRIORITY  */
 #endif
+	"conffile" "\0"    /* DHCP_CONF_FILE      */
 	"ip6rd" "\0"       /* DHCP_6RD            */
 	"msstaticroutes""\0"/* DHCP_MS_STATIC_ROUTES */
 	"wpad" "\0"        /* DHCP_WPAD           */