udhcpc6: add PXELINUX options

Add support for the PXELINUX options 209 ("ConfigFile") and 210
("PathPrefix") in the DHCPv6 client.

See also: RFC5071, "Dynamic Host Configuration Protocol Options Used by
PXELINUX".

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/networking/udhcp/d6_dhcpc.c b/networking/udhcp/d6_dhcpc.c
index f837bd549..85068721a 100644
--- a/networking/udhcp/d6_dhcpc.c
+++ b/networking/udhcp/d6_dhcpc.c
@@ -83,6 +83,8 @@ static const struct dhcp_optflag d6_optflags[] = {
         { OPTION_STRING,                                D6_OPT_BOOT_URL },
         { OPTION_STRING,                                D6_OPT_BOOT_PARAM },
 #endif
+        { OPTION_STRING,                                0xd1 }, /* DHCP_PXE_CONF_FILE */
+        { OPTION_STRING,                                0xd2 }, /* DHCP_PXE_PATH_PREFIX */
         { 0, 0 }
 };
 /* Must match d6_optflags[] order */
@@ -102,7 +104,8 @@ static const char d6_option_strings[] ALIGN1 =
         "bootfile_url" "\0" /* D6_OPT_BOOT_URL */
         "bootfile_param" "\0" /* D6_OPT_BOOT_PARAM */
 #endif
-
+        "pxeconffile" "\0" /* DHCP_PXE_CONF_FILE  */
+        "pxepathprefix" "\0" /* DHCP_PXE_PATH_PREFIX  */
         "\0";
 
 #if ENABLE_LONG_OPTS
@@ -401,6 +404,8 @@ static void option_to_env(uint8_t *option, uint8_t *option_end)
 #endif
                 case D6_OPT_BOOT_URL:
                 case D6_OPT_BOOT_PARAM:
+                case 0xd1: /* DHCP_PXE_CONF_FILE */
+                case 0xd2: /* DHCP_PXE_PATH_PREFIX */
                         {
                         char *tmp = string_option_to_env(option, option_end);
                         if (tmp)